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Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: fibronectin; fibrillogenesis; extracellular matrix; biomechanics; mechanobiology

Online: 2 August 2021 (09:45:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0293.v1

A Preliminary Study on Dimension-Reduction Algorithm for Variational Methods in Three Dimensions

Xuan Chen

Subject: Environmental And Earth Sciences, Other Keywords: 3D-Var; matrix; dimension-reduction algorithm

Online: 1 February 2018 (14:37:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202408.0216.v1

Generalized core-EP inverse for triangular operator matrices

Huanyin Chen

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: core inverse; core-EP inverse; generalized core-EP inverse; triangular matrix; Block operator matrix; Banach algebra

Online: 4 August 2024 (23:35:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1134.v1

Division by Zero: Using Semi-structured Complex Numbers to Find the Inverse of a Singular Matrix and Show Its Applications

Peter Jean Paul, Shanaz Wahid

Subject: Computer Science And Mathematics, Mathematics Keywords: division by zero; inverse of a singular matrix; singular matrix; semi-structured complex numbers; projective geometry

Online: 21 February 2024 (03:45:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1917.v1

Uncertainty Propagation using Dispersion Matrices Accounting for Systematic Error in Least‐Squares Regression

Rainer Feistel, Jeremy Lovell-Smith

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: empirical equations; generalized least‐squares regression; weight matrix; systematic errors; covariance propagation; projection matrix; residual structure

Online: 30 November 2023 (09:16:25 CET)

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Empirical equations representing, interpolating and smoothing groups of measurement results by regression methods are in widespread use in metrology and other fields of science and engineering. Standard equations for the propagation of measurement uncertainties to values computed from such equations are available but suffer from a lack of general acceptance and are only infrequently applied in practice. One reason for the slow uptake is the lack of clear methods to account for systematic error. In this paper, uncertainty propagation equations in terms of covariance matrices are generalized to allow for systematic errors in least-squares regression, and effects of the resulting uncertainties are investigated analytically. A stochastic ensemble model of systematic error is proposed for the computation of the non-diagonal elements of the weight matrix of the Generalized Least-Squares method (GLS) from the measurement uncertainty. A GLS projector formalism is described which separates the effects of measurement scatter on values calculated by the equation from those on the related “residuals”, i.e., the residual errors in the fitted data. The same projectors act similarly on the associated uncertainties and covariance matrices and permit the effects of systematic errors on the simulation covariance to be quantified. It is demonstrated that, in order to include systematic errors in the uncertainty estimates of GLS, covariance matrices may be substituted by novel, specifically defined dispersion matrices that are not specified yet by the GUM[1]. Systematic measurement errors may be estimated from various sources; a particularly easy way suggested here involves analyzing the structure in the regression residuals. It is demonstrated that GLS projectors exhibit inherent features of “error blindness” also with respect to systematic errors. [1] GUM: Guide to the Expression of Uncertainty in Measurement, http://www.bipm.org/en/publications/guides

Preprint ARTICLE | doi:10.20944/preprints202305.1001.v1

Generalized Legendre Wavelets, Definition, Properties and Their Applications for Solving Linear Differential Equations

Naglaa M. El-Shazly, Mohamed A. Ramadan, Taha Radwan

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: Generalized Legendre wavelet; operational matrix of integration; linear differential equations; product operation matrix; convergence analysis; accuracy

Online: 15 May 2023 (08:05:45 CEST)

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Preprint REVIEW | doi:10.20944/preprints202301.0555.v1

The Extracellular Matrix: Composition, Function, Remodeling and Its Role in Tumorigenesis

Kevin Dzobo, Collet Dandara

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: Extracellular matrix; Tissues; Organs; Development; Tumor progression; Collagens; Fibronectin; Integrins; Metastasis; Matrix metalloproteases; Cell Adhesion; Signaling

Online: 30 January 2023 (11:16:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202004.0032.v1

Indoor Positioning Using PnP Problem on Mobile Phone Images

Hana Kubíčková, Karel Jedlička, Radek Fiala, Daniel Beran

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: indoor positioning system; image-based positioning system; computer vision; SIFT; feature detection; feature description; cell phone camera; PnP problem; projection matrix; epipolar geometry; OpenCV

Online: 3 April 2020 (11:59:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0512.v1

Evidence On Viral Suppression Supports Scaling-Up Transition To Dolutegravir-Based Regimens In Pediatric Populations In Cameroon: A Multicentre Baseline Assessment For The Cipher-Adola Study

Joseph FOKAM, Yagai Bouba, Rogers Awoh Ajeh, Dominik Tameza Guebiapsi, Suzane Essamba, Albert Franck Zeh Meka, Ebiama Lifanda, Rose Armelle Ada, Yakouba Liman, Nancy Barbara Mbengono, Audrey Raissa Dzaddi Djomo, Suzie Ndiang Tetang, Samuel Martin Sosso, Jocelyne Carmen Babodo, Olivia Francette Ndomo Ambomo, Edith Michele Temgoua, Caroline Medouane, Sabine Ndejo Atsinkou, Justin Leonel Mvogo, Roger Martin Onana, Jean de Dieu Anoubissi, Alice Ketchaji, Alex Durand Nka, Davy-Hyacinthe Anguechia Gouissi, Aude Christelle Ka’e, Nadine Nguendjoung Fainguem, Rachel Simo Kamgaing, Désiré Augustin Komego Takou, Michel Carlos Tommo Tchouaket, Ezechiel Ngoufack Jagni Semengue, Marie Atsama Amougou, Julius Nwobegahay, Comfort Vuchas, Anna Nya Nsimen, Bertrand Bille Eyoum, Sandra kenmegne Gatchuessi, Francis Ndongo Ateba, Daniel Kesseng, Serge Clotaire Billong, Daniele Armenia, Maria Mercedes Santoro, Francesca Ceccherini-Silberstein, Paul Ndombo Koki, Hadja Cherif Hamsatou, Vittorio Colizzi, Alexis Ndjolo, Carlo Federico Perno, Anne-Cécile Zoung-Kanyi Bissek

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Virological suppression; low level viremia; children, adolescents, and young-adults; DTG-based regimen; elimination of paediatric AIDS; Cameroon.

Online: 5 July 2024 (12:31:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0017.v1

Nonlinear Modeling of RC Substandard Beam-Column Joints for Building Response Analysis in Support of Seismic Risk Assessment and Loss Estimation

Naveed Ahmad, Muhammad Rizwan, Babar Ilyas, Seda Hussain, Muhammad Usman Khan, Hamna Shakeel, Muhammad Ejaz Ahmad

Subject: Engineering, Civil Engineering Keywords: beam-column joint; fibre-based section modeling; joint shear hinge; substandard beam-column joints; stiffness and strength deterioration; reinforced concrete; seismic vulnerability; risk

Online: 4 October 2022 (10:38:02 CEST)

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Preprint REVIEW | doi:10.20944/preprints202407.0747.v1

Enhancing Business Higher Education Through Simulation-Based Learning, Problem-Based Learning, and Challenge-Based Learning

Albérico Travassos Rosário, Ricardo Raimundo

Subject: Business, Economics And Management, Business And Management Keywords: ; simulation-based learning; problem-based learning; challenge-based learning; higher education ;

Online: 10 July 2024 (04:34:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1928.v1

Evaluation of the Burden of Musculoskeletal Disorders in Korean Workers Using the Job-Exposure Matrix

Eun-Soo Lee, Myong-Hwan Kim, Dongmug Kang, Se-Yeong Kim, Youngki Kim

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: Job exposure matrix; Musculoskeletal symptoms; Exposure assessment

Online: 27 August 2024 (10:36:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1877.v1

Time-Dependent Evolution of Al-Al4C3 Composite Micro-structure and Hardness

AUDEL SANTOS BELTRÁN, Veronica Gallegos Orozco, MIRIAM MORAIMA SANTOS BELTRÁN, HANSEL MANUEL MEDRANO PRIETO, IVANOVICH ESTRADA GUEL, ROBERTO MARTINEZ SANCHEZ, CARMEN ANGELINA GALLEGOS OROZCO

Subject: Chemistry And Materials Science, Ceramics And Composites Keywords: Metal-matrix composite; Mechanical milling; Nanoparticles dispersion

Online: 27 August 2024 (09:23:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0532.v1

Characterization of Vitronectin Effect in 3D Ewing Sarcoma Models: A Digital Microscopic Analysis of Two Cell Lines

Amparo López-Carrasco, Karina Parra-Haro, Isaac Vieco-Martí, Sofía Granados-Aparici, Juan Díaz-Martín, Carmen Salguero-Aranda, Delia Acevedo-León, Enrique de Álava, Samuel Navarro, Rosa Noguera

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: extracellular matrix; hydrogels; digital quantification; childhood cancer

Online: 8 August 2024 (04:06:15 CEST)

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Preprint REVIEW | doi:10.20944/preprints202405.1798.v1

Conventional Machining of Metal Matrix Composites towards Sustainable Manufacturing – Present Scenario and Future Prospects

Endalkachew Mosisa Gutema, Hirpa Gelgele Lemu

Subject: Engineering, Mechanical Engineering Keywords: Metal Matrix Composites; Conventional Machining; Sustainable manufacturing

Online: 28 May 2024 (09:41:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1629.v1

Region-Specific Decellularization of Porcine Uterine Tube Extracellular Matrix: A New Approach for Reproductive Tissue-Engineering Applications

Gustavo Henrique Doná Rodrigues Almeida, Raquel Souza da Silva, Mariana Sversut Gibin, Victoria Helen de Souza Gonzaga, Henrique dos Santos, Rebeca Piatniczka Igleisa, Leticia Alves Fernandes, Iorrane Couto Fernandes, Thais Naomi Gonçalves Nesiyama, Franciele Sato, Mauro Luciano Baesso, Luzmarina Hernandes, Jaqueline de Carvalho Rinaldi, Flavio Vieira Meirelles, Claudete S. Astolfi-Ferreira, Antonio José Piantino Ferreira, Ana Claudia Oliveira Carreira

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: uterine tube; extracellular matrix; reproduction; decellularization; biomaterial

Online: 24 May 2024 (11:56:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1709.v1

Low-Level Laser Can Increase Extracellular Matrix Signals Mediated by Cytokine Modulation during the Lung Recellularization Process

Leticia L. Guimarães, Auriléia A. Brito, Andressa D. Cereta, Ana Paula L. Oliveira, João Pedro R. Afonso, Diego A.C.P.G. Mello, Iransé Oliveira-Silva, Carlos H. M. Silva, Rodrigo F. Oliveira, Deise A. A. P. Oliveira, Rodolfo de Paula Vieira, Dante Brasil Santos, Giuseppe Insalaco, Luís V. F. Oliveira, Renata K. Palma

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: low-level laser; extracellular matrix; lung; decellularization

Online: 26 April 2024 (08:42:16 CEST)

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Several Lung diseases can result in lung damage structural changes, with lung transplantation as a only therapeutic option when the disease reaches an advanced progression, unfortunately, the success of lung transplantation is limited. In this context, lung bioengineering is considered a potential therapeutic alternative and the current approach is based on the use of the natural extracellular matrix (ECM) of the decellularized lung. The use of undifferentiated cells to seed an ECM can be a more practical strategy for lung bioengineering but the sterilization of the organ for this recellularization process is still a challenge. In this sense, Low-Level Laser Therapy (LLLT) can emerge as a potential treatment alternative. Therefore, the objective of this study was to verify if LLLT, can optimize lung recelularization with mesenchymal stem cells by cytokine modulation. For this, we decellularized lungs from C57BL/6 mice perfusing SDS 1% via pulmonary artery, sterilized with LLL (660nm, 100mW, 30s). Whole lung scaffolds were recellularized: (1) Recellularized Lung (2) Recellularized Lung + LLLT. Mesenchymal stem cells derived from human tooth pulp (DPSc) were seeded into lungs and incubated for 24 hours at 37ºC, 5% CO₂, in a bioreactor-like conditions, maintaining CPAP at 20cmH2O, 90% O2, and LLL at wavelength of 808nm, 100mW, 30s. Culture medium were analyzed at 24 hours. H&E, immunostaining, SEM and ELISA assay were performed. We produced viable biological scaffolds absent of DNA content, preserving glycosaminoglycans and collagen I, III and IV, fibronectin, laminin and elastin and lung structure (SEM). The levels of IL-6 and IL-8 were stable during the 24 hours of culture. IFN-γ levels showed significant difference in the DPSc and DPSc+LLLT group in the 24-hour evaluation. The levels of IL-10 decreased after LLLT. These findings highlight LLLT's role in cytokine regulation and contamination prevention during lung recellularization with mesenchymal stem cells. Overall, these results demonstrated that LLLT's modulated cytokine levels and could prevent contamination during the lung recellularization process with mesenchymal stem cells, offering promise for enhanced therapeutic strategies in lung bioengineering.

Preprint ARTICLE | doi:10.20944/preprints202404.0503.v1

Formulation and Evaluation of Hydrophilic Matrix Tablets for Controlled Released Chlorzoxazone Delivery

Andreea Creteanu, Gabriela Lisa, Cornelia Vasile, Maria-Cristina Popescu, Daniela Pamfil, Claudiu N. Lungu, Gladiola Tantaru, Alina Diana Panaite

Subject: Medicine And Pharmacology, Pharmacology And Toxicology Keywords: chlorzoxazone; collided; chitosan; matrix tablets; controlled release

Online: 8 April 2024 (07:15:31 CEST)

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The release of the active substance from the matrix modified-release tablets based on Kollidon®SR and chitosan depends on its solubility in the dissolution medium and on the composition of the matrix-forming polymers. The study is based on new oral matrix tablets based on Kollidon®SR and chitosan, formulated to optimize the low oral bioavailability of chlorzoxazone, a non-steroidal anti-inflammatory drug, a class II Biopharmaceutical Classification System. Nine types of chlorzoxazone matrix tablets were obtained using the direct compression method, and their combination at 1:1, 1:2, 1:3 chlorzoxazone/ excipients, 20%-40% (w/w) Kollidon®SR, 3-7% (w/w) chitosan and the auxiliary substances were formulated in constant concentrations. Pharmaco-technical characterization included the analysis of flowability and compressibility properties (flow time, friction coefficient, angle of repose, Hausner ratio, Carr Index), and of pharmaco-chemical characteristics (mass and dose uniformity, thickness, diameter, mechanical strength, Friability, degree of softening, in vitro release profile) of the tablets. Based on the initial evaluation of the pharmaco-technical analysis, pharmaco-chemical characteristics, and in vitro release profile, only three matrix tablet formulations (F1b, F2b, and F3b) were further tested. They were evaluated through Fourier-transform infrared spectrometry, X-ray Diffraction, thermogravimetry, differential scanning calorimetry, and in vitro dissolution tests. The three formulations were comparatively studied regarding the release kinetics of active substances using in vitro release testing. The results were analyzed by fitting into four representative mathematical models for the modified release oral formulations. In vitro kinetic study reveals a complex mechanism of release occurring in the first (0 - 2 hours) and second (2.0 hours – 36 hours) steps of drug release. Two factors have been calculated to assess the release profile of chlorzoxazone: f1 - the similarity factor and f2 - the factor difference. The results have shown that both Kollidon®SR and chitosan may be used as matrix-forming agents when combined with chlorzoxazone. In vitro dissolution tests revealed the F2b sample, data suggesting a faster drug release. The three formulations showed optimum pharmaco-technical properties and in vitro kinetic study, and they had tremendous potential to be used in oral pharmaceutical products for the controlled delivery of chlorzoxazone.

Preprint ARTICLE | doi:10.20944/preprints202403.1688.v1

Microhardness and Wear Behavior of Nanodiamond-Reinforced Nanocomposites for Dental Applications

Rocío Moriche, Joaquín Artigas-Arnaudas, Bhanu Chetwani, María Sánchez, Mónica Campo, Margarita GONZALEZ PROLONGO, Joaquín Rams, Silvia González Prolongo, Alejandro Ureña

Subject: Chemistry And Materials Science, Ceramics And Composites Keywords: nanodiamond/polymer-matrix composite; wear; hardness; photocuring

Online: 27 March 2024 (14:32:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.0789.v1

An Investigation on the Healing Efficiency of Epoxy Vitrimer Composites based on Zn2+ catalyst

Barbara Palmieri, Fabrizia Cilento, Eugenio Amendola, Teodoro Valente, Stefania Dello Iacono, Michele Giordano, Alfonso Martone

Subject: Engineering, Other Keywords: Compression moulding, vitrimer, multifunctional composites, epoxy matrix.

Online: 9 August 2023 (14:30:37 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202307.0783.v1

Acellular Dermal Matrix combined with Negative Pressure Wound Therapy in a Chemical Burn: Case Report

Viviana Gómez-Ortega, David Camacho-Obando, Ana-María Carmargo-López, Cesar Cardona-Montes

Subject: Medicine And Pharmacology, Surgery Keywords: chemical burn; acellular matrix; hallux reconstruction; NPWT

Online: 12 July 2023 (07:39:55 CEST)

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Preprint REVIEW | doi:10.20944/preprints202306.2159.v1

Advances in Understanding Fibrosis: Mechanisms, Clinical Implications, Current Therapies, and Prospects for Future Interventions

Jennifer C. Ku, Jacob Raiten, Yong Li

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: fibrosis; inflammatory; fibroblasts; extracellular matrix; therapeutic strategy

Online: 29 June 2023 (14:13:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202211.0081.v1

Influence of Reinforcing Efficiency of Clay on the Mechanical Properties of Poly(butylene terephthalate) Nanocomposite

Maria A.S. Colombo, Francisco R.V. Díaz, Deepa Kodali, Vijaya Rangari, Olgun Güven, Esperidiana A.B. Moura

Subject: Chemistry And Materials Science, Biomaterials Keywords: clay; polymer-matrix; nanocomposites; mechanical properties; morphology

Online: 4 November 2022 (01:06:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202210.0453.v1

Impact of Metabolic Stress on BeWo Syncytiotrophoblast Function

Lisa Rogers, Marissa Huggins, Ryan Doster, Joel Omage, Alison Eastman, David M. Aronoff

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: Gestational diabetes; obesity; placenta; syncytiotrophoblast; matrix metalloprotease

Online: 28 October 2022 (10:04:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0444.v1

Reciprocity and Representations for Wave Fields in 3D Inhomogeneous Parity-Time Symmetric Materials

Kees Wapenaar, Evert Slob

Subject: Physical Sciences, Applied Physics Keywords: parity-time symmetry; reciprocity; Green’s matrix; metamaterials

Online: 28 September 2022 (13:27:56 CEST)

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Preprint REVIEW | doi:10.20944/preprints202203.0293.v1

Advances in Non-invasive Biosensing Measures to Monitor Wound Healing Progression

Walker Short, Oluyinka Olutoye, Benjamin Padon, Umang Parikh, Daniel Colchado, Hima Vangapandu, Shayan Shams, Taiyun Chi, Jangwook Jung, Swathi Balaji

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: extracellular matrix; biosensing; machine learning; wound healing

Online: 22 March 2022 (03:50:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0145.v1

Entropy Measures of Distance Matrix

Bünyamin Şahin, Abdulgani Şahi̇n

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Distance; Wiener Index; Distance Matrix; Entropy Measure

Online: 8 November 2021 (13:33:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0533.v2

Formulation Of Quantum Mechanics On Poincaré Disks

Arturo Tozzi

Subject: Physical Sciences, Acoustics Keywords: Einstein; manifold; Hilbert space; observer; measurement; matrix

Online: 4 June 2021 (11:59:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0519.v1

New Insight into Quaternions and Their Matrices

Gülsüm Yeliz Şentürk, Nurten Gürses, Salim Yüce

Subject: Computer Science And Mathematics, Mathematics Keywords: Generalized quaternion, generalized complex number, matrix representation.

Online: 19 April 2021 (22:00:00 CEST)

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Working Paper ARTICLE

Subsampling Approaches for Compressed Sensing with Ultrasound Arrays in Non-Destructive Testing

Eduardo Pérez, Jan Kirchhof, Fabian Krieg, Florian Römer

Subject: Engineering, Control And Systems Engineering Keywords: Full Matrix Capture; Compressed Sensing; Sparse Array

Online: 3 November 2020 (14:11:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0140.v1

Mechanical Simulation and Numerical Deduction for Volume Expansive-Prone Slag in a Rigid Matrix

George Wang

Subject: Engineering, Civil Engineering Keywords: steel slag; concrete; expansion force; rigid matrix

Online: 6 October 2020 (16:09:43 CEST)

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As the coproduct of steelmaking, steelmaking slag, volumetrically expansive-prone without treatment, has been satisfactorily used as an aggregate base course material in highway construction. Although numerous technical reports and papers have revealed that steel slag aggreged using in rigid matrixes, the end product, paving block, non-structural concrete, for example, possesses superb strength and durability properties, the application of steel slag aggregate as a concrete aggregate is currently prohibited in highway construction. Naturally, researchers explore the practicality of use of steel slag, how to connect the laboratory experiment results to the end-product behavior, and further convert the research results into real construction? For all nontraditional or secondary materials utilization, the procedure of laboratory material examination, lab and field trial test are critical. To generalize the utilization, usability criteria establishment is necessary. This paper tries to use step-by-step method and plain language to explain how the volumetrically expansion can be simulated in lab testing apparatus, and based on the model, the mathematical deduction can result in a numerical usability criterion for steel slag use as a coarse aggregate in concrete (a rigid material). Therefore the paper is composed four main parts, laboratory test methods to examine the expansion force resulted from steel slag; converting the measured expansion force in a given volume of mass aggregate to the expansion (body) force of a single particle; modeling of slag and end material disruption; and a usability criterion from numerical deduction for the use of expansive-prone coarse slag in concrete or other rigid matrices. The paper provides the solutions to answer the above questions. Through the mathematical and mechanical modeling, provides the potential criteria that could result in specifications and guidance establishment for broad volumetric expansive-prone slags.

Preprint ARTICLE | doi:10.20944/preprints202009.0054.v1

Diagnostic Models for Screening of Chronic Periodontitis with Cytokines and Microbiologic Profiles in Saliva

Jungwon Lee, Jun-Beom Lee, Hyun-Young Song, Min Jung Son, Ling Li, In-Chul Rhyu, Yong-Moo Lee, Ki-Tae Koo, Jung-Sub An, Jin Sup Kim, Eunkyung Kim

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: periodontitis; diagnosis; saliva; biomarkers; matrix metalloproteinase; cytokines.

Online: 3 September 2020 (04:43:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0037.v1

Effect of Orally Administered Relaxin in Experimental Nash

Giuseppe Colucci

Subject: Medicine And Pharmacology, Gastroenterology And Hepatology Keywords: Extrac cellular matrix; Relaxin; liver fibrosis; MMPs

Online: 3 March 2020 (11:16:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0010.v1

Long-Term Evaluation of Autogenous Demineralized Dentin Matrix: A Retrospective 7-Year Clinical Study

Yonsoo Shin, Young-Kyun Kim, In-Woong Um

Subject: Chemistry And Materials Science, Biomaterials Keywords: autogenous demineralized dentin matrix; osseointegration; dental implants

Online: 3 February 2020 (04:45:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints201901.0082.v3

Characterization of Collagens Fibers (I, III, IV) and Elastin of Normal and Neoplastic Canine Prostatic Tissues

Luis Gabriel Rivera Calderón, Priscila Emiko Kobayashi, Rosemeri Oliveira Vasconcelos, Carlos Eduardo Fonseca-Alves, Renee Laufer-Amorim

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: dog; prostatic tissue; extracellular matrix; picrosirius; immunohistochemistry

Online: 21 February 2019 (06:52:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0188.v1

A Comparison Study on Criteria to Select the Most Adequate Weighting Matrix

Marcos Herrera, Jesús Mur, Manuel Ruiz Marín

Subject: Business, Economics And Management, Economics Keywords: weights matrix; model selection; entropy; monte carlo

Online: 8 November 2018 (04:42:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0231.v1

Electrospun Produced 3D Matrices for Covering of Vascular Stents: Paclitaxel Release Depending on Fiber Structure and Composition of the External Environment

Konstantin A. Kuznetsov, Alena O. Stepanova, Ren I. Kvon, Timothy E.L. Douglas, Nikita A. Kuznetsov, Vera S. Chernonosova, Ivan A. Zaporozhchenko, Maria V. Kharkova, Irina V. Romanova, Andrey A. Karpenko, Pavel P. Laktionov

Subject: Medicine And Pharmacology, Pharmacology And Toxicology Keywords: drug release; electrospinning; paclitaxel; polycaprolactone; 3D matrix

Online: 11 October 2018 (06:09:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0074.v1

Microstructural Characterization and Mechanical Properties of 5 vol.% (TiB_w+TiC_p)/Ti Composite Produced by Forging

Jianchao Han, Z.D. Lü, Changjiang Zhang, S.Z. Zhang, Hongzhou Zhang, Peng Lin, Peng Cao

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: titanium matrix composites; microstructure; mechanical properties; forging

Online: 6 June 2018 (05:54:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0220.v1

Mechanical and Microstructural Characteristics of the Fiber-Reinforced Composite Materials

Wei Zhang

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: composite fibers; flexural strength; polyester matrix; reinforcement

Online: 29 August 2016 (10:46:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0503.v1

Protein Structure, Models of Sequence Evolution, and Data Type Effects in Phylogenetic Analyses of Mitochondrial Data: A Case Study in Birds

Emily L. Gordon, Rebecca T. Kimball, Edward L. Braun

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: mitogenome; transmembrane proteins; substitution matrix; JTT matrix; molecular evolution; partitioned models; mixture models; RY coding; cyto-nuclear discordance

Online: 29 September 2021 (16:57:38 CEST)

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Phylogenomic analyses have revolutionized the study of biodiversity, but they have revealed that estimated tree topologies can depend, at least in part, on the subset of the genome that is analyzed. For example, estimates of trees for avian orders differ if protein coding or non-coding data are analyzed. The bird tree is a good study system because the historical signal for relationships among orders is very weak, which should permit subtle non-historical signals to be identified, while monophyly of orders is strongly corroborated, allowing identification of strong non-historical signals. Hydrophobic amino acids in mitochondrially-encoded proteins, which are expected to be found in transmembrane helices, have been hypothesized to be associated with non-historical signals. We tested this hypothesis by comparing the evolution of transmembrane helices and extramembrane segments of mitochondrial proteins from 420 bird species, sampled from most avian orders. We estimated amino acids exchangeabilities for both structural environments and assessed the performance of phylogenetic analysis using each data type. We compared those relative exchangeabilities with values calculated using a substitution dataset for transmembrane helices from a variety of sampled set of nuclear- and mitochondrially-encoded proteins, allowing us to compare the bird-specific mitochondrial models with a general model of transmembrane protein evolution. To complement our amino acid analyses, we examined the impact of protein structure on patterns of nucleotide evolution. Models of transmembrane and extramembrane sequence evolution for amino acids and nucleotides exhibited striking differences, but there was no evidence for strong topological data type effects. However, incorporating protein structure into analyses of mitochondrially-encoded proteins improved model fit. Thus, we believe that considering protein structure will improve analyses of mitogenomic data, both in birds and in other taxa.

Preprint ARTICLE | doi:10.20944/preprints202408.0222.v1

The Effectiveness of Metaverse in e-Learning

Henk Koppelaar, Sina Sayardoost Tabrizi, Ali Moeini, Asal Etaati

Subject: Social Sciences, Media Studies Keywords: Metaverse; Immersive Education; 3D Based Education; Metaverse-based education

Online: 5 August 2024 (03:04:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1872.v1

Novel protein-rich materials from rapeseed meal with enhanced mechanical behavior

Sara Aquilia, Luca Rosi, Michele Pinna, Sabrina Bianchi, Walter Giurlani, Marco Bonechi, Francesco Ciardelli, Anna Maria Papini, Claudia Bello

Subject: Chemistry And Materials Science, Biomaterials Keywords: Rapeseed meal-based material; Protein-based biopolymers; Renewable biomaterials.

Online: 27 June 2024 (08:08:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0088.v1

Sonication-Assisted Decellularization of Waste Tilapia (Oreochromis niloticus) Heads for Extracellular Matrix Extraction

Lean Baclayon, Ronald Bual, Marionilo Jr. Labares, Kit Dominick Don Valle, Job Jr. Pague, Johnel Alimasag, Gladine Lumancas, Fernan Arellano, Michael John Nisperos, Jemwel Aron, Hernando Bacosa

Subject: Chemistry And Materials Science, Biomaterials Keywords: waste valorization; decellularization; tilapia heads; extracellular matrix extraction

Online: 1 August 2024 (13:59:17 CEST)

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Preprint REVIEW | doi:10.20944/preprints202407.1435.v1

Idiopathic Pulmonary Fibrosis: Regulation, Cytokine Signaling, and Gaps in Our Knowledge

Faith Jenkinson, Aoife M Rodgers, Rachael Lynda Bell, Donna Small, Bettina Claudia Schock, Nazia Chaudhuri, Rebecca Jo Ingram

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: Idiopathic pulmonary fibrosis; myofibroblast; extracellular matrix; T cells

Online: 17 July 2024 (12:33:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0510.v1

Compact, Ultra-Wideband Butler Matrix Beamformers for the Advanced 5G Band FR3 – Part I

Tzichat Empliouk, Panagiotis Kapetanidis, Dimitrios Arnaoutoglou, Christos Kolitsidas, Dimitrios Lialios, Anastasios Koutinos, Theodoros N. F. Kaifas, Stavros V Georgakopoulos, Constantinos L. Zekios, George A. Kyriacou

Subject: Engineering, Electrical And Electronic Engineering Keywords: Butler Matrix; Miniaturization; Wideband Matching; 5G; Beamforming Network

Online: 10 June 2024 (09:25:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1711.v1

Conformational Analysis of Trifluoroacetyl Triflate, CF₃C(O)OSO₂CF₃: Experimental Vibrational and DFT Investigation

Agustín Spaltro, Melina G. Peluas, Carlos O. Della Védova, Rosana M. Romano

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: conformations; matrix-FTIR; gas-phase FTIR; Raman; DFT

Online: 26 April 2024 (07:43:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.0442.v1

Study on SR-Crossbar RF MEMS Switch Matrix Port Configuration Scheme with Optimized Consistency

Weiwei Zhou, Weixing Sheng, Binyun Yan

Subject: Engineering, Electrical And Electronic Engineering Keywords: RF MEMS; switch matrix; topology; port configuration; consistency

Online: 5 January 2024 (10:49:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1309.v1

A Bibliometric Study of Biofilm Matrix

Yuanzhao Ding

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: Biofilm matrix; Bibliometric Study; Proteins; Polysaccharides; Extracellular DNA

Online: 21 October 2023 (03:37:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1560.v1

Factors Influencing Vitamin K Deficiency In Hemodialysis Patients

Marcel Palamar, Iulia Grosu, Adalbert Schiller, Ligia Petrica, Madalina Bodea, Alexandru Sircuta, Cornel Rusan, Daniela Maria Tanasescu, Flaviu Bob

Subject: Medicine And Pharmacology, Urology And Nephrology Keywords: hemodialysis, calcifications, vitamin K, osteocalcin, Matrix Gla protein

Online: 22 August 2023 (11:13:49 CEST)

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Preprint HYPOTHESIS | doi:10.20944/preprints202308.1004.v1

Quantifying Tissue Response after Intraovarian Platelet-Rich Plasma: Experimental Approach to Assess NF-κB and TNF-α as Mediators to Reduce Local Entropy

E. Scott Sills

Subject: Medicine And Pharmacology, Reproductive Medicine Keywords: reproductive biology; ovarian function; PRP; extracellular matrix; entropy

Online: 14 August 2023 (10:31:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0518.v1

Community-Based Matrix Factorization (CBMF) Approach for Enhancing Quality of Recommendations

Srilatha Tokala, Murali Krishna Enduri, Jaya Lakshmi T, Hemlata Sharma

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Matrix factorization; Recommendation; Community detection; Parallel computation; RMSE

Online: 7 August 2023 (09:54:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1947.v1

Content of Fatty Acids in Relation to the Metal Concentration in the Muscle of Two Freshwater Fish Species

Katarina Jovičić, Vesna Djikanović, Isidora Santrač, Sanja Živković, Milena Dimitrijević, Jelena Vranković

Subject: Biology And Life Sciences, Toxicology Keywords: roach; white bream; lipids; inorganic chemicals; correlation matrix

Online: 27 July 2023 (15:43:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1528.v1

Novel Fluoride Matrix for Dual‐Range Optical Sensors and Visualization

Alexander A. Alexandrov, Lada A. Petrova, Daria V. Pominova, Igor D. Romanishkin, Maria V. Tsygankova, Sergey V. Kuznetsov, Vladimir K. Ivanov, Pavel P. Fedorov

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: fluoride matrix; luminescence; thermometry; thermography; molten-salt synthesis

Online: 24 July 2023 (03:00:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1399.v1

Concavity of the Conditional Mle for Logit Panel Data Models with Imputed Covariates

Opeyo Peter Otieno, Weihu Cheng

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Maximum Likelihood; Fixed effects; Conditional logit; Hessian matrix

Online: 20 July 2023 (09:52:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202301.0497.v1

Laser Therapy Changes the Expression of Matrix Metalloproteinases in Bleomycin-Induced Skin Fibrosis

Anna G. Soboleva, Vladimir V. Sobolev, Mari M. Karapetyan, Alexandre Mezentsev, Olga I. Rud’ko, Evgenia D. Davydova, Julia A. Mogulevtseva, Olga V. Zhukova, Irina M. Korsunskaya

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: matrix metalloproteinases; skin fibrosis; gene expression; laser therapy

Online: 27 January 2023 (07:17:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202206.0095.v1

Optimization of Mechanosensitive Cross-talk between Matrix Stiffness and Protein Density: Independent Matrix Properties Regulate Spreading Dynamics of Myocytes

Judith Brock, Julia Erhardt, Stephan A. Eisler, Marcel Hörning

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: mechanosensitivity; proliferation; myocyte; actincytoskeleton; extracellular matrix; L-DOPA

Online: 7 June 2022 (08:05:44 CEST)

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Preprint REVIEW | doi:10.20944/preprints202111.0389.v1

Emerging Fabrication Techniques for Engineering Extracellular Matrix Biomimetic Materials

Samuel Ogbeide Ebhodaghe, Farnaz Sadat Fattahi, Henry Ndibe, Ojeaga Evans Imanah

Subject: Chemistry And Materials Science, Biomaterials Keywords: 3D Bioprinting; Extracellular Matrix; Extrusion; Biomaterials; Tissue Engineering

Online: 22 November 2021 (12:26:49 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints202111.0017.v1

Deficiency of MMP-10 Aggravates the Diseased Phenotype of Aged Dystrophic Mice

Arantxa Baraibar Churio, Miriam Bobadilla, Neira Sainz, Florencio JD Machado, Josune Orbe, and Ana Pérez-Ruiz

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: matrix metalloproteases; muscular dystrophy; skeletal muscle; cardiac muscle

Online: 1 November 2021 (12:56:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0675.v1

Optical Single Bragg Mirror Filters for Porous Silicon Multilayered Structure in Visible Wavelength Spectrum

Md. Sakibul Islam

Subject: Physical Sciences, Acoustics Keywords: bragg mirror, bragg reflector, porous silicon, abele's matrix

Online: 27 May 2021 (14:02:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0037.v1

Analysis of Finnish Blue Mussel (Mytilus edulis L.) Shell: Biomineral Ultrastructure, Organic-Rich Interfacial Matrix and Mechanical Behavior

Pezhman Mohammadi, Wolfgang Wagermaier, Merja Penttilä, Markus B. Linder

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: Biomineralization; Finnish blue mussel; Interfacial matrix protein; Chitin

Online: 1 February 2021 (13:56:20 CET)

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Studying various marine biomineralized ultrastructures reveals the appearance of common architectural designs and building blocks in materials with fascinating mechanical properties that match perfectly to their biological tasks. Advanced mechanical properties of biological materials are attributed to evolutionary optimized molecular architectures and structural hierarchy. One example which has not yet been structurally investigated in great detail is the shell of Mytilus edulis L. (Finnish blue mussel) found in the archipelago of SW-Finland. Through a combination of various state-of-the-art techniques such as high-resolution electron microscopy imaging, Fourier-transformed infrared spectroscopy, powder X-ray diffraction, synchrotron wide-angle X-ray diffraction, nanoindentation and protein analysis, both the inorganic mineralized components as well as the organic-rich matrix were extensively characterized. We found very similar ultra-architecture across the shell of M. edulis L. as compared to the widely studied and closely related M. edulis. However, we also found interesting differences, for instance in the thickness and degree of orientation of the mineralized layers indicating dissimilar properties and related alterations in the biomineralization processes. Our results show that the shell of M. edulis L. has a gradient of mechanical properties, with the increase in the stiffness and the hardness from anterior to the posterior region of the shell. The shell is made from distinct and recognizable mineralized layers each varying in thickness and microstructural features. At posterior regions of the shell, moving from dorsal to ventral side, these layers are an oblique prismatic layer, a prismatic layer and a nacreous layer, in which the oblique prismatic layer is found to be the main and thickest mineralized layer of the shell. Probing the calcified rods in the oblique prismatic layer using high resolution SEM imaging revealed opening of channels with a diameters of 40-50 nm and lengths up to a micrometer extending through the rods. The chitin and protein have been found to be the main component of the organic-rich interfacial matrix as expected. Protein analysis showed two abundant proteins with sizes around 100 kD and 45 kD which likely not only regulates biomineralization and adhesion of the crystals but also governing the intrinsic-extrinsic toughening in the shell. Overall, this detailed analysis provides new structural insights into biomineralization of marine shells in general.

Preprint ARTICLE | doi:10.20944/preprints202010.0522.v1

A Stochastic H-U Model for Malaria Transmission via Markov Theory

Dennis Arku, Gabriel Kallah-Dagadu

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: malaria model; transition matrix; Markov chain; malaria statistics

Online: 26 October 2020 (12:22:20 CET)

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Preprint REVIEW | doi:10.20944/preprints202008.0609.v1

Dairy Consumption and Metabolic Health

Claire Timon, Aileen O'Connor, Nupur Bhargava, Eileen Gibney, Emma Feeney

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Dairy; Health; Matrix; Metabolism; Nutrient; Composition; Saturated Fats

Online: 27 August 2020 (09:46:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0363.v1

The Minor Matrix Protein VP24 from Ebola Virus Lacks Direct Lipid-Binding Properties

Yuan Su, Robert V. Stahelin

Subject: Biology And Life Sciences, Virology Keywords: Ebola virus; filovirus; lipid binding; matrix protein; VP24

Online: 17 July 2020 (06:00:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0374.v1

Finishing of Nickel Matrix Composite Coatings

Tomasz Dyl, Robert Starosta

Subject: Engineering, Mechanical Engineering Keywords: finishing; plastic working; machining; nickel matrix composite; coatings

Online: 29 November 2019 (09:43:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints201907.0126.v1

Quantemol Electron Collisions (QEC): An Enhanced Expert System for Performing Electron Molecule Collision Calculations Using the R-matrix Method

Bridgette Cooper, Maria Tudorovskaya, Sebastian Mohr, Aran O'Hare, Martin Hanicinec, Anna Dzarasova, Jimena Gorfinkiel, Jakub Benda, Zdenek Masin, Ahmed Al-Refaie, Peter Knowles, Jonathan Tennyson

Subject: Physical Sciences, Applied Physics Keywords: electron molecular scattering; R-matrix; expert system; Molpro

Online: 9 July 2019 (04:04:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0167.v1

Scattering Theory of Graphene Grain Boundaries

Francesco Romeo, Antonio Di Bartolomeo

Subject: Physical Sciences, Condensed Matter Physics Keywords: graphene grain boundaries; scattering matrix theory; dirac hamiltonian

Online: 8 August 2018 (12:20:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0268.v1

Starch-Jute fiber hybrid biocomposite modified with Epoxy resin layer: Fabrication and Experimental Characterization

Akarsh Verma, Kamal Joshi, Amit Gaur, V. K. Singh

Subject: Chemistry And Materials Science, Biomaterials Keywords: Jute fiber; Starch matrix; Epoxy resin; Biocomposite; Microstructure

Online: 20 April 2018 (13:58:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1711.v1

Advancing Sustainable Healthcare Technology Management: Developing a Comprehensive Risk Assessment Framework with Fuzzy AHP, Integrating External and Internal Factors in the Gulf Region

Tasneem Mahmoud, Wamadeva Balachandran, Saleh Altayyar

Subject: Public Health And Healthcare, Other Keywords: healthcare technology management (HTM); healthcare risk management (HRM); healthcare technology risk management (HTRM); fuzzy analytic hierarchy process (AHP); endogenous risk factor; exogenous risk factors; facility management; regulatory compliance; blue print; enterprise risk management; PESTLE; comparison matrix; sustainability; healthcare system

Online: 25 June 2024 (16:32:50 CEST)

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In the context of healthcare technology management (HTM) in Saudi Arabia and the Gulf region, this study addresses a significant gap by exploring both external and internal risk factors affecting HTM performance. Previous research has primarily focused on modeling or predicting failures in medical devices, mostly examining internal (endogenous) factors that impact device performance and the development of optimal service strategies. However, a comprehensive investigation of external (exogenous) factors has been notably absent. This research introduces a novel hierarchical risk management framework, designed to accommodate the broad array of healthcare technologies, not limited to medical devices. It significantly advances the field by thoroughly investigating and validating a comprehensive set of 53 risk factors and assessing their influence on HTM. Additionally, this study embraces the perspective of enterprise risk management (ERM) and expands it to identify and incorporate a wider range of risk factors, offering a more holistic and strategic approach to risk assessment in healthcare technology management. The findings reveal that several external and internal factors previously underexplored significantly impact HTM performance. Notably, the Fuzzy AHP survey identified “design risk” under facility and environmental risks as the highest risk for HTM in the region. Furthermore, the study reveals that three out of the top ten risks are related to “facility and internal environmental” factors, six are related to technological endogenous factors, and only one is related to managerial factors. This distribution underscores the critical areas for intervention and the need for robust facility and technology management strategies. In conclusion, this research not only fills a critical void by providing a robust framework for healthcare technology risk assessment but also broadens the scope of risk analysis to include a wider array of technologies, thereby enhancing the efficacy and safety of healthcare interventions in the region. Additionally, the proposed hierarchy provides insights into the underlying risk factors for healthcare technology management, with potential applications extending beyond the regional context to a global scale. Moreover, the equation we propose offers a novel perspective on the key risk factors involved in healthcare technology management, presenting insights with far-reaching implications applicable not only regionally but also on a global level. This framework also supports sustainability goals by encouraging the efficient and responsible utilization and management of healthcare technologies, essential for ensuring the long-term economic and environmental sustainability of medical technology use.

Preprint ARTICLE | doi:10.20944/preprints202309.0723.v2

On Some Specific Order Estimates for the Mertens Function and Its Relation to the Non-trivial Zeros of $\zeta(s)$

Subham De

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: arithmetic function; Mo¨bius function; Riemann Zeta function; Mertens function; Redheffer Matrix; Riemann Hypothesis; Roesler Matrix; spectral radius; Mertens Hypothesis

Online: 26 July 2024 (13:01:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0429.v1

Preliminary TC Calculations for Iron-Based Superconductivity in NaFeAs, LiFeAs, FeSe and Nanostructured FeSe/SrTiO₃ Superconductors

Chi Ho Wong, Rolf Lortz

Subject: Chemistry And Materials Science, Other Keywords: Iron-based Superconductivity

Online: 6 June 2023 (09:43:32 CEST)

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Many theoretical models of iron-based superconductors have been proposed but Tc calculations based on the models are usually missing. We have chosen two models of iron-based superconductors in the literature and then compute the Tc values accordingly: Recently two models have been announced which suggest that superconducting electron concentration involved in the pairing mechanism of iron-based superconductors may have been underestimated, and that the antiferromagnetism and the induced xy potential may even have a dramatic amplification effect on electron-phonon coupling. We use bulk FeSe, LiFeAs and NaFeAs data to calculate the Tc based on these models and test if the combined model can predict the superconducting transition temperature (Tc) of the nanostructured FeSe monolayer well. To substantiate the recently announced xy potential in the literature, we create a two-channel model to separately superimpose the dynamics of the electron in the upper and lower tetrahedral plane. The results of our two-channel model support the literature data. While scientists are still searching for a universal DFT functional that can describe the pairing mechanism of all iron-based superconductors, we base on the ARPES data to propose an empirical combination of DFT functional for revising the electron-phonon scattering matrix in the superconducting state, which ensures that all electrons involved in iron-based superconductivity are included in the computation. Our computational model takes into account this amplifying effect of antiferromagnetism and the correction of the electron-phonon scattering matrix together with the abnormal soft out-of-plane lattice vibration of the layered structure, which allows us to calculate theoretical Tc values of LiFeAs, NaFeAs and FeSe as a function of pressure that correspond reasonably well to the experimental values. More importantly, by taking into account the interfacial effect between an FeSe monolayer and its SrTiO3 substrate as an additional gain factor, our calculated Tc value is up to 91 K high, and provides evidence that the strong Tc enhancement recently observed in such monolayers with Tc reaching 100 K may be contributed from the electrons within the ARPES range.

Preprint REVIEW | doi:10.20944/preprints202409.1583.v1

A Review: Nature-Based Solutions

Chinomnso ONWUBIKO, Dennis Worlanyo

Subject: Environmental And Earth Sciences, Environmental Science Keywords: nature-based solutions; climate change; coastal ecosystems; ecosystem-based adaptation

Online: 20 September 2024 (11:49:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.2023.v1

A Strategy of Weak-Connected Grid Search for Noise Filtering and Density Grid-Based Data Clustering

Nang Toan Truong, Sy Dzung Nguyen, Seung-Bok Choi

Subject: Engineering, Mechanical Engineering Keywords: Clustering; Density-based clustering; Density grid-based clustering; Fuzzy approximation

Online: 28 August 2024 (09:06:01 CEST)

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Preprint REVIEW | doi:10.20944/preprints202306.0141.v1

Target Identification in Anti-tuberculosis Drug Discovery

Rita Capela, Rita Félix, Marta Clariano, Diogo Nunes, Maria de Jesus Perry, Francisca Lopes

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: Mycobacterium tuberculosis; target identification; activity-based probes; affinity-based probes

Online: 2 June 2023 (07:39:37 CEST)

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Preprint REVIEW | doi:10.20944/preprints202211.0544.v1

A Holistic Review of Lake Rawapening Management Practices, Indonesia: Pillar-based and Object-based Management

Djati Mardiatno, Faridah Faridah, Noviyanti Listyaningrum, Nur Rizki Fitri Hastari, Iwan Rhosadi, Apolonia Diana Sherly da Costa, Aries Dwi Wahyu Rahmadana, Ahmad Rif'an Khoirul Lisan, Sunarno Sunarno, Muhammad Anggri Setiawan

Subject: Environmental And Earth Sciences, Environmental Science Keywords: pillar-based lake management; object-based lake management; Lake Rawapening

Online: 29 November 2022 (08:49:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0336.v1

Can Nature-Based Solutions Deliver a Win-Win for Biodiversity and Climate Change Adaptation?

Isabel Key, Alison Smith, Beth Turner, Alexandre Chausson, Cécile Girardin, Megan MacGillivray, Nathalie Seddon

Subject: Biology And Life Sciences, Ecology, Evolution, Behavior And Systematics Keywords: nature-based solutions; climate change adaptation; biodiversity; ecosystem-based adaptation

Online: 23 October 2021 (14:19:30 CEST)

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Nature-based solutions (NbS) are increasingly recognised for their potential to address both the climate and biodiversity crises. These outcomes are interdependent, and both rely on the capacity of NbS to support and enhance the health of an ecosystem: its biodiversity, the condition of its abiotic and biotic elements, and its capacity to function normally despite environmental change. However, while understanding of ecosystem health outcomes of nature-based interventions for climate change mitigation is growing, the outcomes of those implemented for adaptation remain poorly understood with evidence scattered across multiple disciplines. To address this, we conducted a systematic review of the outcomes of 109 nature-based interventions for climate change adaptation using 33 indicators of ecosystem health across eight broad categories (e.g. diversity, biomass, ecosystem functioning and population dynamics). We showed that 88% of interventions with positive outcomes for climate change adaptation also reported measurable benefits for ecosystem health. We also showed that interventions were associated with a 67% average increase in local species richness. All eight studies that reported benefits in terms of both climate change mitigation and adaptation also supported ecosystem health, leading to a triple win. However, there were also trade-offs, mainly for forest management and creation of novel ecosystems such as monoculture plantations of non-native species. Our review highlights two major limitations of research to date. First, only a limited selection of metrics are used to assess ecosystem health and these rarely include key aspects such as functional diversity and habitat connectivity. Second, taxonomic coverage is poor: 67% of outcomes assessed only plants and 57% did not distinguish between native and non-native species. Future research addressing these issues will allow the design and adaptive management of NbS to support healthy and resilient ecosystems, and thereby enhance their effectiveness for meeting both climate and biodiversity targets.

Preprint ARTICLE | doi:10.20944/preprints202401.1813.v1

Info- Geometric Analysis of the Stable Queue Manifold Dynamics With Queue Applications to E-health

Dr Ismail A Mageed

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Stable ; queue; Service times(ST); service utilization ; (SU); Fisher information matrix(FIM); FIM exponential matrix of the queue manifold

Online: 25 January 2024 (10:46:16 CET)

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Preprint REVIEW | doi:10.20944/preprints202408.0816.v1

Securing the Internet of Things (IoT) in the Quantum Era: Challenges and Future Directions for Quantum-Resistant Cryptography

Maryam Alwashahi, Hothefa Jassim, fadi Abdelfattah

Subject: Computer Science And Mathematics, Security Systems Keywords: quantum computing; post-quantum cryptography; IoT; lattice-based cryptography; code-based cryptography; multivariate cryptography; and hash-based signatures

Online: 12 August 2024 (13:30:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201712.0110.v1

A Novel Strategy for Very-Large-Scale Cash-Crop Mapping in the Context of Weather-Related Risk Assessment, Combining Global Satellite Multispectral Datasets, Environmental Constraints, and in-Situ Acquisition of Geospatial Data

Fabio Dell'Acqua, Gianni Cristian Iannelli, Marco A. Torres, Mario L. V. Martina

Subject: Environmental And Earth Sciences, Geography Keywords: best practice; crop mapping; crowdsourcing; drought risk assessment; exposure; flood risk assessment; geospatial data; spaceborne remote sensing; unsupervised classification; rule-based classification

Online: 17 December 2017 (08:26:29 CET)

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Cash crops are agricultural crops intended to be sold for profit as opposed to subsistence crops, meant to support the producer, or to support livestock. Since cash crops are intended for future sale, they translate into large financial value when considered on a wide geographical scale, so their production directly involves financial risk. At a national level, extreme weather events including destructive rain or hail, as well as drought, can have a significant impact on the overall economic balance. It is thus important to map such crops in order to set up insurance and mitigation strategies. Using locally generated data -such as municipality-level records of crop seeding- for mapping purposes implies facing a series of issues like data availability, quality, homogeneity etc. We thus opted for a different approach relying on global datasets. Global datasets ensure homogeneity and availability of data, although sometimes at the expense of precision and accuracy. A typical global approach makes use of spaceborne remote sensing, for which different land cover classification strategies are available in literature at different levels of cost and accuracy. We selected the optimal strategy in the perspective of a global processing chain. Thanks to a specifically developed strategy for fusing unsupervised classification results with environmental constraints and other geospatial inputs including ground-based data, we managed to obtain good classification results despite the constraints placed. The overall production process was composed using ``good-enough" algorithms at each step, ensuring that the precision, accuracy, and data-hunger of each algorithm was commensurate to the precision, accuracy, and amount of data available. This paper describes the tailored strategy developed on the occasion as a cooperation among different groups with diverse backgrounds, a strategy which is believed to be profitably reusable in other, similar contexts. The paper presents the problem, the constraints and the adopted solutions; it then summarizes the main findings including that efforts and costs can be saved on the side of Earth Observation data processing when additional ground-based data are available to support the mapping task.

Preprint REVIEW | doi:10.20944/preprints202409.1836.v1

Aptamer-Guided Gene Therapy for Cancer Disease

Gabriele Coppola, Fabiola Cennamo, Giuseppe Ciccone, Maria Luigia Ibba, Aldo Di Vito, Carla Lucia Esposito, Silvia Catuogno

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: aptamer; gene therapy; cancer; delivery; aptamer-based conjugate; aptamer-based functionalization

Online: 24 September 2024 (04:51:27 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.1108.v1

Biopolymer-Based Nanogel Approach in Drug Delivery: Basic Concept and Current Developments

Ebru Altuntaş, Burcu Özkan, Sevgi Güngör, Yıldız Özsoy

Subject: Medicine And Pharmacology, Pharmacy Keywords: biopolymers; nanogels; drug delivery; polysaccharide-based nanogels; protein-based nanogels; nanotechnology

Online: 28 April 2023 (04:32:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0133.v1

TactiGraph: An Asynchronous Graph Neural Network for Contact Angle Prediction Using Neuromorphic Vision-Based Tactile Sensing

Hussain Sajwani, Abdulla Ayyad, Yusra Alkendi, Mohamad Halwani, Yusra Abdulrahman, AbdelQader Abusafieh, Yahya Zweiri

Subject: Engineering, Other Keywords: tactile sensing; vision-based tactile sensing; event-based vision; robotic manufacturing

Online: 10 April 2023 (03:06:15 CEST)

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Preprint REVIEW | doi:10.20944/preprints202202.0212.v1

Knowledge Graph Embedding for Link Prediction Models

Ehtisham Ur Rehman, Aamir Saeed, Nasru Minallah, Abdul Hafeez

Subject: Computer Science And Mathematics, Analysis Keywords: Knowledge Graphs; Link Prediction; Semantic-Based Models; Translation Based Embedded Models

Online: 17 February 2022 (11:49:24 CET)

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Preprint REVIEW | doi:10.20944/preprints202408.1013.v1

Commercial Silver-based Dressings: In vitro and Clinical Studies in Treatment of Chronic and Burn Wounds

Sweta Shrestha, Bo Wang, Prabir K Dutta

Subject: Medicine And Pharmacology, Other Keywords: Biofilms; Wound healing; Wound care; silver toxicity; Dressing Matrix

Online: 14 August 2024 (04:40:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0957.v1

Vitronectin Levels in Plasma of Neuroblastoma Patients and Culture Media of 3D Models: A Prognostic Circulating Biomarker?

Amparo López-Carrasco, Isaac Vieco-Martí, Sofía Granados-Aparici, Delia Acevedo-León, Nuria Estañ-Capell, Raquel Portugal, Jorge Huerta-Aragonés, Adela Cañete, Samuel Navarro, Rosa Noguera

Subject: Biology And Life Sciences, Life Sciences Keywords: Pediatric cancer; liquid biopsy; precision medicine; hydrogels; extracellular matrix

Online: 11 July 2024 (12:34:54 CEST)

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Preprint REVIEW | doi:10.20944/preprints202407.0887.v1

Self-Healing Composites: A Path to Redefining Material Resilience - A Comprehensive Review

Maria Luísa Durão, Luís Nobre, Carlos Mota, João Bessa, Fernando Cunha, Raúl Fangueiro

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Polymer-matrix composites; Smart materials; Material Resilience; Self-healing

Online: 10 July 2024 (15:47:11 CEST)

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Preprint REVIEW | doi:10.20944/preprints202406.0144.v1

Exploring the Role of Dermal Sheath Cells in Wound Healing and Fibrosis

Bing Zhu, Lu Liang, Lihua Hui, Yaojun Lu

Subject: Biology And Life Sciences, Life Sciences Keywords: Dermal sheath cell; Wound healing; Extracellular matrix; Fibrosis; Paracrine

Online: 4 June 2024 (12:34:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1229.v1

Regenerative Potential of Demineralized Dentin-Derived Graft Material in Rabbit Calvaria: A Histomorphometric Study

Bounghoon Lee, Hyunsuk Choi, Dong-Seok Sohn

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: guided bone regeneration; rabbit calvaria; histology; dentin-derived matrix

Online: 20 May 2024 (15:59:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0986.v1

Impact of Inorganic Anions on the Photodegradation of Herbicide Residues in Water by UV/Persulphate-Based Advanced Oxidation

Gabriel Pérez-Lucas, Aitor Campillo, Simón Navarro

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: matrix effect; herbicides; water treatment; persulphate; titanium dioxide; photooxidation

Online: 17 May 2024 (06:32:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1535.v1

The General Solution to a Classical Matrix Equation AXB=C over the Dual Split Quaternion Algebra

Kai-Wen Si, Qing-Wen Wang

Subject: Computer Science And Mathematics, Mathematics Keywords: dual split quaternion; real representation; matrix equation; general solution

Online: 26 March 2024 (11:51:23 CET)

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Preprint CASE REPORT | doi:10.20944/preprints202403.0375.v1

Reinforcement of a Subcutaneous Pocket for Implantable Cardioverter Defibrillator Insertion Using Acellular Dermal Matrix: A Case Report

Jun Ho Choi, Ho Jun Lee, Kwang Seog Kim, Hyung Wook Park, Insu Choi, Jae Ha Hwang, Sam Yong Lee

Subject: Medicine And Pharmacology, Surgery Keywords: Acellular Dermal Matrix; Child; Defibrillators, Implanatable; Reinforcement; Subcutaneous Pocket

Online: 6 March 2024 (23:55:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1145.v1

Microstructure Analysis of Aluminium and Hybrid Reinforced Metal Matrix Al6061/B4C/ZrO2/SiC Composites

Dr.Muzeer S, SUSHMA LUKKANI

Subject: Chemistry And Materials Science, Ceramics And Composites Keywords: Hybrid Metal Matrix Composites; XRD; EDS; Fractography; Microstructural analysis

Online: 20 February 2024 (13:34:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1669.v1

Equalities for Mixed Operations of Moore–Penrose and Group Inverses of a Matrix

Yongge Tian

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: group inverse; matrix equality; Moore--Penrose inverse; range; rank

Online: 25 October 2023 (16:12:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.2022.v1

Whole Genome Expression Profiling of Semitendinosus Tendons from Children with Diplegic and Tetraplegic Cerebral Palsy

Simona Nemska, Simone Serio, Veronica Larcher, Giulia Beltrame, Nicola Marcello Portinaro, Marie-Louise Bang

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Cerebral palsy; tendons; extracellular matrix; gene expression; RNA-sequencing

Online: 30 August 2023 (10:14:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0914.v1

Influence of the Polymeric Matrix on the Optical and Electrical Properties of Copper Porphine-Based Semiconductor Hybrid films

María Elena Sánchez Vergara, Joaquín André Hernández Méndez, Daniela González Verdugo, Isabella María Giammattei Funes, Octavio Lozada Flores

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: Polymeric Matrix; Porphine; Hybrid Film; Optical Properties; Electrical Behavior

Online: 13 July 2023 (10:04:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1498.v1

Hypergraph Regularized Lp Smooth Nonnegative Matrix Factorization for Data Representation

Yunxia Xu, Linzhang Lu, Qilong Liu, Zhen Chen

Subject: Computer Science And Mathematics, Mathematics Keywords: hypergraph regularization; Lp smooth; nonnegative matrix factorization; data clustering

Online: 22 May 2023 (10:20:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0204.v1

Polarimetric Images of Biological Tissues Based on the Arrow Decomposition of Mueller Matrices

José J. Gil, Ignacio San José, Mónica Canabal-Carbia, Irene Estévez, Emilio González-Arnay, Jordi Luque, Teresa Garnatje, Juan Campos, Angel LIzana

Subject: Physical Sciences, Optics And Photonics Keywords: Polarimetric imaging; Mueller matrix; polarimetry; diattenuation; polarizance; depolarization; biophotonics

Online: 4 May 2023 (05:54:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0912.v1

Bulk Tungsten Fiber-Reinforced Tungsten (WfW) Composites Using Yarn-Based Textile Preforms

Alexander Lau, Jan Willem Coenen, Daniel Schwalenberg, Yiran Mao, Till Höschen, Johann Riesch, Leonard Raumann, Michael Treitz, Hanns Gietl, Alexis Terra, Beatrix Goeths, Christian Linsmeier, Katharina Theis-Bröhl, Jesus Gonzalez-Julian

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: tungsten, metal matrix composites, CVD, yarns, preforms, textiles, fusion

Online: 25 April 2023 (09:48:25 CEST)

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