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Working Paper TECHNICAL NOTE

Measurement of Quasi-static and Dynamic Displacements of Footbridges Using the Composite Instrument of Smartstation and Accelerometer: Case Studies

Jiayong Yu, Zhen Fang, Xiaolin Meng, Yilin Xie, Qian fan

Subject: Engineering, Civil Engineering Keywords: composite instrument of smartstation; accelerometer; dynamic displacement; vibration frequency; structural health monitoring

Online: 18 August 2020 (09:45:07 CEST)

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Working Paper ARTICLE

On the Design of an Optimal Flexible Bus Dispatching System with Modular Bus Units: Using the Three-Dimensional Macroscopic Fundamental Diagram

Igor Dakic, Kaidi Yang, Monica Menendez, Joseph Y.J. Chow

Subject: Social Sciences, Transportation Keywords: Optimal bus dispatching system; Modular bus units; Frequency setting problem; 3D-MFD

Online: 28 June 2020 (20:13:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201902.0032.v1

A New Mass Measure and a Simplication of Modern Physics that Make Gravity Predictions Independent of G

Espen Gaarder Haug

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: Mass, Compton frequency, Planck length, Planck mass, Newton's gravitational constant, Schwarzschild radius

Online: 4 February 2019 (11:48:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0093.v1

The Dynamic Constants of Unidirectional Fibrous Composites at the Glass Transition Region as Obtained from the Interphase Concept

Emilio Sideridis, John Venetis

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: unidirectional fibrous composites, interphase, storage/loss modulus, loss factor, frequency, glass transition.

Online: 7 December 2018 (17:07:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0265.v1

How to Explain and Predict the Shape Parameter of the Generalized Extreme Value Distribution of Streamflow Extremes Using a Big Dataset

Hristos Tyralis, Georgia Papacharalampous, Sarintip Tantanee

Subject: Environmental And Earth Sciences, Other Keywords: CAMELS; flood frequency; hydrological signatures; extreme value theory; random forests; spatial modelling

Online: 12 November 2018 (04:59:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints201805.0477.v1

Enhancement of Distributed Temperature Sensitivity Using Al-Coated Fiber in OFDR

Yong-seok Kwon, Khurram Naeem, Min Yong Jeon, Il-Bum Kwon

Subject: Physical Sciences, Optics And Photonics Keywords: optical frequency domain reflectometry; distributed sensor; temperature sensor; tunable laser; coated fiber

Online: 31 May 2018 (11:41:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201712.0141.v1

Three-Dimensional Resistive Metamaterial Absorber Loaded with Metallic Resonators for the Enhancement of Lower-Frequency Absorption

Yang Shen, Jie Qiu Zhang, Yong Qiang Pang, Lin Zheng, Jia Fu Wang, Hua Ma, Shao Bo Qu

Subject: Physical Sciences, Applied Physics Keywords: metamaterial absorber; metallic resonator; three-dimensional construction; broadband absorption; lower-frequency absorption

Online: 20 December 2017 (09:20:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints201712.0081.v1

Characterization of Different Cable Ferrite Materials to Reduce the Electromagnetic Noise in the 2–150 kHz Frequency Range

Adrian Suarez, Jorge Victoria, Antonio Alcarria, Jose Torres, Pedro A. Martinez, Julio Martos, Jesús Soret, Raimundo Garcia-Olcina, Steffen Muetsch

Subject: Engineering, Electrical And Electronic Engineering Keywords: Cable ferrite; electromagnetic interferences; low frequency emissions; nanocrystalline; relative permeability; insertion loss

Online: 13 December 2017 (13:37:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints201708.0083.v1

Surface Profiling and Core Evaluation of Aluminum Honeycomb Sandwich Aircraft Panels Using Multi-Frequency Eddy Current Testing

Tyler Reyno, P. Ross Underhill, Thomas W. Krause, Catharine Marsden, Diane Wowk

Subject: Engineering, Mechanical Engineering Keywords: eddy current; multi-frequency eddy current; surface profiling; surface damage; honeycomb paneling

Online: 25 August 2017 (04:13:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0897.v1

Advanced ENF Region Classification Using UniTS-SinSpec: A Novel Approach Integrating Sinusoidal Activation Function and Spectral Attention

Yujin LI, Tianliang LU, Gaojun ZENG, Kai ZHAO, Shufan PENG

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: electric network frequency; ENF classification; sinusoidal activation function; spectral attention; UniTS-SinSpec model

Online: 11 September 2024 (12:39:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0832.v1

A Novel Lock-in Amplification-Based Frequency Component Extraction Method for Performance Analysis and Power Monitoring of Grid-Connected Systems

Abdur Rehman, Taeho An, Woojin Choi

Subject: Engineering, Electrical And Electronic Engineering Keywords: Component extraction; digital lock-in amplifier; frequency tracking; non-sinusoidal signals; Power Monitoring

Online: 10 July 2024 (12:53:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0224.v1

The Probability of Hospital Bankruptcy: A Stochastic Approach

Ram Shanmugam, Brad Beauvais, Diane Dolezel, Rohit Pradhan, Zo Ramamonjiarivelo

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: Bivariate lognormal frequency structure, expected elasticity, hazard levels, correlation, survival function, hospital bankruptcy

Online: 2 July 2024 (11:17:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0597.v1

Validation of GPM DPR rainfall and Drop Size Distributions using disdrometer observations in the Western Mediterranean

Eric Peinó, Joan Bech, Francesc Polls, Mireia Udina, Marco Petracca, Elisa Adirosi, Sergi Gonzalez, Brice Boudevillain

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Dual-frequency Precipitation Radar (DPR); GPM; disdrometer; ground validation; precipitation estimates; Western Mediterranean

Online: 11 June 2024 (14:55:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1634.v1

Information Gradient among Nucleotide Sequences of Essential RNAs in an Evolutionary Perspective

Houssem Ben Khalfallah, Mariem Jelassi, Hajar Rissaoui, Mohtadi Barchouchi, Clément Baraille, Joël Gardes, Jacques Demongeot

Subject: Biology And Life Sciences, Ecology, Evolution, Behavior And Systematics Keywords: Origin of life; Proto-ribosome; RNA ring; Prebiotic systems; Gradient of pentamer frequency

Online: 24 May 2024 (14:10:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0646.v1

A Numerical Study on the Penetrability and Directivity of the Difference-Frequency Component Beam in Bubbly Liquids Obtained via Parametric Acoustic Array

María Teresa Tejedor Sastre, Christian Vanhille

Subject: Physical Sciences, Acoustics Keywords: bubbly liquids; nonlinear acoustics; parametric acoustic array; difference frequency component; ultrasound; penetrability; directivity

Online: 9 April 2024 (10:07:05 CEST)

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Preprint REVIEW | doi:10.20944/preprints202402.1017.v1

Planar Printed Structures Based on Matryoshka Geometries: A Review

Alfredo Gomes Neto, Jefferson Costa e Silva, Joabson Nogueira de Carvalho, Custódio Peixeiro

Subject: Engineering, Electrical And Electronic Engineering Keywords: printed circuits; microstrip; ring resonators; Matryoshka sets; frequency selective surfaces; filters; antennas; sensors

Online: 19 February 2024 (07:43:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1942.v1

Modification of Direct Control System Based on Three-Level Autonomous Inverter NPC with Random Frequency Commutation

Bogdan Yurievich Vasilev, The Hien Nguyen

Subject: Engineering, Control And Systems Engineering Keywords: random frequency commutation; three-level NPC inverter; direct torque control; harmonic current distortion

Online: 26 December 2023 (10:12:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1986.v1

Wavelet Theories and Techniques for Brain Disease: Diagnosis, and Treatment

Shengpei Ye

Subject: Medicine And Pharmacology, Clinical Medicine Keywords: brain diseases; wavelet; feature extraction; signal denoising; classification and diagnosis; time-frequency analysis

Online: 31 October 2023 (03:34:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202307.0579.v1

A Richness Estimator Based on Integrated Data

Chun-Huo Chiu

Subject: Environmental And Earth Sciences, Ecology Keywords: Chao’s lower bound estimator; Good-Turing frequency formula; Integrated data; singleton; doubleton; tripleton

Online: 10 July 2023 (09:05:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0206.v1

Test Structures for the Characterization of the Gate Resistance in 16nm FinFET RF Transistors

Mario Lauritano, Peter Baumgartner

Subject: Engineering, Electrical And Electronic Engineering Keywords: Gate Resistance; Characterization; de-embedding; radio-frequency MOSFETs (RF MOS- 7 FETs); FinFET

Online: 2 June 2023 (13:39:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0921.v1

Improved Algorithms of Data Processing for Dispersive Interferometry using Optical Frequency Comb

Tao Liu, Jiucheng Wu, Amane Suzuki, Ryo Sato, Hiraku Matsukuma, Wei Gao

Subject: Engineering, Mechanical Engineering Keywords: absolute distance measurement; dispersive interferometry; Fourier transform; optical frequency comb; excess fraction method

Online: 25 April 2023 (10:24:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202201.0111.v1

Beam Damage Assessment Using Natural Frequency Shift and Machine Learning

Nicoleta Gillich, Cristian Tufisi, Christian Sacarea, Catalin V Rusu, Gilbert-Rainer Gillich, Zeno-Iosif Praisach, Mario Ardeljan

Subject: Engineering, Mechanical Engineering Keywords: damage detection; linear regression; random forest; artificial neural network; training parameters; natural frequency

Online: 10 January 2022 (12:26:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0099.v1

Experimental Estimation of Deviation Frequency Within the Spectrum of Scintillations of the Carrier Phase of GNSS Signals

Vladislav Demyanov, Ekaterina Danilchuk, Yury Yasyukevich, Maria Sergeeva

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: ionosphere; scintillations; carrier phase; GNSS; GPS; GLONASS; Galileo; SBAS; GNSS signals; deviation frequency

Online: 4 November 2021 (09:41:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0027.v1

Difficulty Manipulation and Feedback Strategies on Performance During a Novel Fine Motor Coordination Task

Yousri Elghoul, Fatma Bahri, Khaled Trabelsi, Hamdi Chtourou, Mohamed Frikha, Cain C.T. Clark, Jordan M. Glenn, Nicola Bragazzi, Nizar Souissi

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: motor learning; fine motor coordination task; difficulty level; reduced feedback frequency; time pressure.

Online: 2 August 2021 (12:12:49 CEST)

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Improving the acquisition and retention of a new motor skill is of great importance. The present study (i) investigated the effects of difficulty manipulation strategies (gradual difficulty), combined with different modalities of feedback (FB) frequency on performance accuracy and consistency when learning a novel fine motor coordination task, and (ii) examined relationships between novel fine motor task performance and executive function (EF), working memory (WM), and perceived difficulty (PD). Thirty-six, right-handed, novice physical education students volunteered to participate in this study. Participants were divided into three progressive difficulty groups (PDG), 100% visual FB (FB1), 50% FB (FB2), and 33% FB (FB3). Progressive difficulty was increased by the manipulation of the distance to the target; 2 m, 2.37 m, and 3.56 m. Three FB modalities were investigated (i.e.: 100% visual FB (100% FB), 50% reduced feedback condition (50% RFB), and 33% reduced feedback conditions (33% RFB)). Performance assessments were conducted following familiarization, acquisition, and retention learning phases. Two stress-conditions of dart throws were investigated (i.e.: free condition (FC) and time pressure condition (TPC)). After the learning intervention, data showed that, under the free condition, the 100% FB group had a significant improvement in accuracy during all learning phases. Under time pressure condition, for the 50% RFB and the 33% RFB group, the measured variable (accuracy and consistency) showed a significant linear improvement in performance. The association between the percentage of RFB frequencies and the task difficulty (50% group) may be a more appropriate and manageable cognitive load compared to the 33% RFB and the 100% FB group. The present findings could have practical implications for practitioners because, while strategies are clearly necessary for improving learning, the efficacy of the process appears to be essentially based on the characteristics of the learners.

Preprint ARTICLE | doi:10.20944/preprints202106.0136.v1

An Improved Droop Control Strategy for Grid-connected Inverter Power Stability and Harmonic Suppression Under Grid Fluctuation and Inter-harmonics

Wanwan Xu, Bin Wang, Jiang Liu, Da Li

Subject: Engineering, Automotive Engineering Keywords: Droop control; micro-grid inverter; grid-connected mode; instantaneous frequency detection; incomplete derivation

Online: 4 June 2021 (10:48:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0387.v2

Lift-off Invariant Inductance of Steels in Multi-Frequency Eddy-Current Testing

Mingyang Lu, Xiaobai Meng, Ruochen Huang, Liming Chen, Anthony Peyton, Wuliang Yin

Subject: Engineering, Automotive Engineering Keywords: Eddy current testing; lift-off invariance; property measurement; multi-frequency; non-destructive testing.

Online: 22 April 2021 (09:16:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0467.v1

New Biomass Estimates for Chaparral-Dominated Southern California Landscapes

Charlie Schrader-Patton, Emma C. Underwood

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: Biomass; Carbon sequestration; Chaparral; NDVI; Fire frequency; Mediterranean-Type Climate Regions; National Forests

Online: 18 March 2021 (10:15:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0592.v1

On the Physical Nature of the Problems of Frequency Control of Asynchronous Electric Drives

Владимир Кодкин

Subject: Engineering, Automotive Engineering Keywords: asynchronous electric motor; frequency control; vector control; vector equation; nonlinear transfer functions; experiment

Online: 23 November 2020 (14:45:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202008.0138.v1

Frequency Maps as Expert Instructions to Lessen Data Dependency on Real-time Traffic Light Recognition

Hendrik Macedo, Thiago Almeida, Leonardo Matos, Bruno Prado

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Traffic Light Recognition (TLR); machine learning; Expert Instruction (EI); frequency maps; computer vision

Online: 6 August 2020 (07:56:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0746.v1

An Efficient Radio Frequency Interference Recognition Using End-to-end Transfer Learning

Sahar Ujan, Neda Navidi, Rene Jr Landry

Subject: Engineering, Electrical And Electronic Engineering Keywords: radio frequency interference detection; deep learning; transfer learning; pre-trained convolutional neural networks

Online: 31 July 2020 (12:06:33 CEST)

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Working Paper ARTICLE

Negative Effective Mass in Plasmonic Systems, II: Elucidating of Optical and Acoustical Branches of Vibrations and the Possibility of Anti-Resonance Propagation

Edward Bormashenko, Irina Legchenkova, Mark Frenkel

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: metamaterials; negative effective mass; plasma oscillations; low frequency plasmons; optical and acoustical branches.

Online: 21 July 2020 (13:38:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0092.v1

Relationships between Urine Albumin Excretion and Dietary Habits in Patients with Type 2 Diabetes

Sadako Matsui, Yasuhisa Someya, Hiroshi Yoshida

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: Type 2 diabetes; urea albumin excretion; food frequency questionnaire survey; β-cryptoxanthin; fruits

Online: 8 July 2019 (14:44:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0335.v1

Pendulum-Type Hetero-Core Fiber Optic Accelerometer for Low-Frequency Vibration Monitoring

Hiroshi Yamazaki, Ichiro Kurose, Michiko Nishiyama, Kazuhiro Watanabe

Subject: Engineering, Control And Systems Engineering Keywords: structural health monitoring; fiber optic sensor; accelerometer; hetero-core; low-frequency vibration measurement

Online: 21 June 2018 (07:53:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0140.v1

A Single-Stage Asymmetrical Half-Bridge Flyback Converter with Resonant Operation

Chung-Yi Ting, Yi-Chieh Hsu, Jing-Yuan Lin, Chung-Ping Chen

Subject: Engineering, Electrical And Electronic Engineering Keywords: fly-back converter; zero-voltage-switching (ZVS); Variable-frequency-controller (VFC); single-stage

Online: 9 May 2018 (07:43:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0033.v2

A simple Spectral Observer

Lizeth Torres, Javier Jiménez-Cabas, José Francisco Gómez-Aguilar, Pablo Pérez-Alcazar

Subject: Engineering, Control And Systems Engineering Keywords: Signal Processing; Fourier Series; State Observer; Short Time Fourier Transform; Time-Frequency Analysis

Online: 26 April 2018 (07:53:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1497.v1

How to Build a Software Quantum Simulator

Gilberto Javier Díaz, Luiz Angelo Steffenel, Carlos Jaime Barrios, Jean Francois Couturier

Subject: Computer Science And Mathematics, Computer Science Keywords: Quantum Computing; High-Performance Computing; Parallel Computing

Online: 19 September 2024 (10:54:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0783.v1

Characteristics of Patients with Newly Diagnosed High-Grade Advanced Ovarian, Fallopian Tube and Primary Peritoneal Cancer in 2018–2023 and the Impact of Molecular Diagnostics on the Chemotherapy in Clinical Practice

Sonja Millert-Kalińska, Małgorzata Stawicka-Niełacna, Tomczak Lidia, Dominik Pruski, Marcin Przybylski, Karolina Jaszczyńska-Nowinka, Grzegorz Poprawski, Radosław Mądry

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: high-grade ovarian cancer; OC; molecular diagnostics

Online: 10 September 2024 (09:33:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1955.v1

Manufacturing and Functional Characterization of Graphite/Metal Composite Materials for High Voltage Electric Motors

Radu Mirea, Razvan Ene, Dragoș Ene

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: graphite; carbon-metal composites; high voltage; pitch

Online: 28 August 2024 (02:56:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0786.v1

The Confluence Analysis Program: A User-Friendly Tool for Automated Cell Confluence Measurement and Visualization

Abraham Lobsenz, Paul Seidler

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: confluency; bioinformatics; cell segmentation; high-throughput screening

Online: 12 August 2024 (10:24:02 CEST)

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Preprint REVIEW | doi:10.20944/preprints202407.1411.v1

Overview of the Multifaceted Functions of LncRNA HOTAIR in Glioblastoma

Mohammed A. Azab

Subject: Biology And Life Sciences, Neuroscience And Neurology Keywords: HOTAIR; ncRNAs; GBM; high grade glioma; epigenetics

Online: 17 July 2024 (12:40:12 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202407.0470.v1

Dual-Band Antenna With Pattern and Polarization Diversity

Jungmin Mo, Youngje Sung

Subject: Engineering, Electrical And Electronic Engineering Keywords: High isolation; Pattern-diversity antenna; Polarization diversity

Online: 5 July 2024 (02:50:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0154.v1

Exoscopic Versus Microscopic Surgery in 5-ALA Guided Resection of High Grade Gliomas

Giada Garufi, Alfredo Conti, Bipin Chaurasia, Salvatore Massimiliano Cardali

Subject: Biology And Life Sciences, Neuroscience And Neurology Keywords: exoscope; microscope; 5-ALA; high grade glioma

Online: 3 May 2024 (07:09:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0296.v1

Wenzhou TE: A First-Principles Calculated Thermoelectric Materials Database

Ying Fang, Hezhu Shao

Subject: Physical Sciences, Condensed Matter Physics Keywords: Thermoelectric Materials; Material Databases; High-throughput Computing

Online: 3 April 2024 (12:25:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1298.v1

Analysis of Attitudes and Practices towards the Influenza Vaccine in High-Risk Adults in Poland

Dorota Kopciuch, Karolina Hoffmann, Krzysztof Kus, Agnieszka Koligat-Seitz, Piotr Ratajczak, Elżbieta Nowakowska, Anna Paczkowska

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: vaccines; influenza; high-risk groups; attitudes; practice

Online: 23 February 2024 (08:30:56 CET)

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Preprint REVIEW | doi:10.20944/preprints202401.0905.v1

Research Status and Development Trend of High-Pressure Water Jet Nozzle

Hongjie Niu, Yuntao Hou, Yafei Lei, Dongyang Li, Yi Yang, Guoyu Song

Subject: Engineering, Mechanical Engineering Keywords: High pressure water jet; Nozzle; Research status

Online: 11 January 2024 (11:00:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0163.v1

A Novel Orthogonally High Isolation CPW Fed UWB MIMO Antenna for IoT Applications

Muhammad Zahid, Nirman Bhowmike, Zaeem Mazhar, Asma Ejaz, Sultan Shoaib, Yasar Amin

Subject: Engineering, Electrical And Electronic Engineering Keywords: UWB; MIMO; Internet of thing; high isolation

Online: 4 December 2023 (07:51:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0124.v1

Outpatient Embedded Palliative Care for Patients With Advanced Thoracic Malignancy: A High-Value Practice

Mary C. Boulanger, Margaret D. Krasne, Ethan K. Gough, Samantha Myers, Ilene S. Browner, Josephine L. Feliciano

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: palliative care; thoracic oncology; high-value care

Online: 4 December 2023 (03:54:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0747.v1

Evaluation of Surface Stabilization and Reinforcement Effect of Fragile Bronzes

JIACHANG CHEN, YIN MAI, LIWEI CHEN, LIANGSHUAI ZHANG, XINZHAN CUI, XIN LIU

Subject: Arts And Humanities, Archaeology Keywords: bronze relics; powder rust; high-permeability; stabilization

Online: 12 October 2023 (02:12:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.2116.v1

Design of a Dual-Band WiFi Antenna Using the Theory of Characteristic Modes and Nested Chinese Characters

Zhonggen Wang, Mingqing Wang, Wenyan Nie

Subject: Engineering, Electrical And Electronic Engineering Keywords: characteristic mode; Chinese characters; WiFi; high isolation

Online: 31 July 2023 (11:42:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0676.v1

mech2d: An Efficient Tool for High-Throughput Calculation of Mechanical Properties for Two-Dimensional Materials

Haidi Wang, Tao Li, Xiaofeng Liu, Weiduo Zhu, Zhao Chen, Zhongjun Li, Jinlong Yang

Subject: Physical Sciences, Condensed Matter Physics Keywords: mechanical properties; 2D materials; high-throughput; DFT.

Online: 21 April 2023 (07:20:16 CEST)

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Preprint REVIEW | doi:10.20944/preprints202204.0228.v1

High Throughput Phenotyping Approach

Anand Kumar, Prashant Kaushik

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: vegetables; high throughput phenotyping; genomic assisted breeding

Online: 26 April 2022 (06:00:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0044.v1

Research on Electromagnetic Radiation Mechanism During Detonation of Energetic Material

Yuanbo Cui, Deren Kong, Jian Jiang, Shang Gao

Subject: Physical Sciences, Radiation And Radiography Keywords: energetic material; plasma; detonation; electromagnetism; high temperature

Online: 2 March 2022 (10:39:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0151.v1

Multiple-Trait Model through Bayesian Inference Applied to Flood-Irrigated Rice (Oryza sativa L)

Antonio Carlos da Silva Junior, Isabela de Castro Sant’Anna, Marco Antônio Peixoto, Lívia Gomes Torres, Michele Jorge Silva, Weverton Gomes da Costa, Camila Ferreira Azevedo, Plinio César Soares, Cosme Damião Cruz

Subject: Computer Science And Mathematics, Analysis Keywords: high-performance; heritable; multi-environments; credibility interval

Online: 10 February 2022 (11:14:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0330.v1

First Observations of SN 1604 (Kepler's Supernova)

Alessandro De Angelis, selenia broccio

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Supernova remnants; Stellar evolution; High-energy astrophysics

Online: 22 October 2021 (12:11:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0426.v1

Magnetic Field Alignment, a Perspective in the Engineering of Collagen-Silica Composite Biomaterials

Nicolas Debons, Kenta Matsumoto, Noriyuki Hirota, Thibaud Coradin, Toshiyuki Ikoma, Carole Aimé

Subject: Chemistry And Materials Science, Biomaterials Keywords: bionanocomposites; collagen; high magnetic field; silica particles

Online: 15 April 2021 (18:12:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0122.v1

Performance Enhancement Techniques for Patch Antennas of Small Satellites

Zizung Yoon, Mayank Mayank, Enrico Stoll

Subject: Engineering, Electrical And Electronic Engineering Keywords: satellite communication, antenna optimization, high gain antenna

Online: 3 March 2021 (09:59:04 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0104.v1

Chitosan from crabs (Scylla Serrata) Represses Hepato-renal Dysfunctions in Rats via Modulation of CD43 and p53 Expression in High Fat Diet-induced Hyperlipidemia

Regina Ngozi Ugbaja, Kunle Ogungbemi, Adewale Segun James, Peter Folorunsho Ayodele, Olanrewaju Samuel Abolade, Stella Ajamikoko, Eniola Olapeju Atayese, Omowunmi Victoria Adedeji

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Chitosan; Hyperlipidemia; High-fat diet; p53; CD43

Online: 2 March 2021 (16:02:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202102.0550.v1

Optical Data Transmission at 44 Tb/s with a Single Integrated Chip Source

Mengxi Tan, Mike Xu, David Moss

Subject: Engineering, Telecommunications Keywords: microcombs; data transmission; filters; high bandwidth; optical

Online: 24 February 2021 (12:59:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202102.0507.v1

Optical Frequency Microcomb Distillation for Super Channel Data Transmission

Chawaphon Prayoonyong, Andreas Boes, Xingyuan Xu, Mengxi Tan, Sai T. Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss, Bill Corcoran

Subject: Engineering, Automotive Engineering Keywords: microcombs, data transmission, filters, high bandwidth, optical

Online: 23 February 2021 (09:49:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202012.0333.v1

ATmospheric LIDar (ATLID): European Space Agency Instrument Ready to Measure Aerosols and Thin Clouds in Atmosphere

João Pereira do Carmo, Geraud de Villele, Kotska Wallace, Alain Lefebvre, Kaustav Ghose, Thomas Kanitz, François Chassat, Bertrand Corselle, Thomas Belhadj, Paolo Bravetti

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: LIDAR; UV laser; high spectral resolution; aerosols

Online: 14 December 2020 (13:11:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints202006.0111.v1

A Novel Family of Quadrupole-Orbitrap Mass Spectrometers for a Broad Range of Analytical Applications

Jan-Peter Hauschild, Amelia Corinne Peterson, Erik Couzijn, Eduard Denisov, Denis Chernyshev, Christian Hock, Hamish Stewart, Ralf Hartmer, Dmitry Grinfeld, Christian Thoeing, Bastian Reitemeier, Arne Kreutzmann, Oliver Lange, Wilko Balschun, Aivaras Venckus, Sebastian Kanngiesser, Alexander Kholomeev, Gregor Quiring, Frank Czemper, Eloy Wouters, Michael Belford, Mathias Mueller, Jens Grote, Tabiwang N. Arrey, Julia Kraegenbring, Kerstin Strupat, Siegrun Mohring, Catharina Crone, Alexander Harder, Aaron Robitaille, Aaron Gajadhar, Khatereh Motamed, Yang Liu, Daniel Lopez Ferrer, Nicolaie Eugen Damoc, Angela Criscuolo, Kristina Srzentic, Ed George, Charles Yang, Ioanna Ntai, Amanda Souza, Andreas Wieghaus, Alexander Makarov

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Orbitrap mass spectrometry; high resolution; accurate mass

Online: 8 June 2020 (10:17:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0459.v1

Oxidation and Characterization of Low Concentration Gas in High-Temperature Reactor

Jinhua Chen, Guangcai Wen, Song Yan, Xiangyun Lan, Lu Xiao

Subject: Engineering, Energy And Fuel Technology Keywords: low concentration; gas; reactor; high-temperature oxidation

Online: 29 February 2020 (09:20:28 CET)

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Preprint ARTICLE | doi:10.20944/preprints201910.0137.v1

An Efficient and High-Resolution Topology Optimization Method Based on Convolutional Neural Networks

Liang Xue, Jie Liu, Guilin Wen, Hongxin Wang

Subject: Computer Science And Mathematics, Mathematics Keywords: topology optimization; convolutional neural network; high-resolution

Online: 12 October 2019 (03:56:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201904.0238.v1

Assessment of Residual Feed Intake and Its Relevant Measurements in Two Varieties of Japanese Quail (Coturnix coturnix japonica) under High Environmental Temperature

Moataz M. Fathi, Ibrahim Al-Homidan, Tarek A. Ebeid, Ahmed Galal, Osama K. Abou-Emera

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: residual feed consumption; quail; high environmental temperature

Online: 22 April 2019 (11:22:21 CEST)

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Preprint REVIEW | doi:10.20944/preprints201806.0308.v1

Irradiance Variability Quantification and Small-Scale Averaging in Space and Time: A Short Review

Gerald M. Lohmann

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: irradiance variability, high-resolution measurements, increment statistics

Online: 19 June 2018 (17:10:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0080.v1

Are Changes in Physical Work Capacity Induced by High-Intensity Functional Training Related to Changes in Associated Physiologic Measures?

Derek A. Crawford, Nicholas B. Drake, Michael J. Carper, Justin Deblauw, Katie M. Heinrich

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: high-intensity functional training; work capacity; performance

Online: 12 March 2018 (05:33:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0958.v1

Effect of Parasitic Channel on DC/AC/RF Characteristics and Power Consumption of GAA Si NS MOSFETs and Circuits

Sekhar Reddy Kola, Yiming Li

Subject: Engineering, Electrical And Electronic Engineering Keywords: gate-all-around; nanosheet; silicon-on-insulator; vertically stacked; parasitic channel; short-channel effect; current densities; gate capacitances; transconductance; cut-off frequency; 3dB frequency; power consumption; 3-D device simulation

Online: 16 October 2023 (09:53:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.1708.v1

High-Entropy Diborides – Silicon Carbide Composites by Reactive and Non-reactive Spark Plasma Sintering: A Comparative Study

Ekaterina Pakhomova, Giacomo Cao, Roberto Orrù, Sebastiano Garroni, Paolo Ferro, Roberta Licheri

Subject: Chemistry And Materials Science, Ceramics And Composites Keywords: high-entropy borides; silicon carbide; spark plasma sintering; self-propagating high-temperature synthesis; resistance to oxidation; fracture toughness

Online: 22 December 2023 (07:11:43 CET)

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Preprint REVIEW | doi:10.20944/preprints202010.0051.v1

ROS and NO Regulation by Melatonin Under Abiotic Stress in Plants

Miriam Pardo-Hernandez, Maria Lopez-Delacalle, Rosa M Rivero

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: melatonin; ROS; NO; posttranslational modifications (PMTs); abiotic stress; drought; salinity; high temperature; high light; waterlogging; abiotic stress combination

Online: 5 October 2020 (07:48:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0655.v1

Study on the Equivalent Density Tool and Depressurization Mechanism of Suction-Type Depressurization Cycle

Meipeng Ren, Xingquan Zhang, Renjun Xie, Junyan Wang, Zhaopeng Zhu, 学彬程, Liangbin Dou

Subject: Engineering, Other Keywords: Cyclic equivalent density (ECD); Annular pressure reduction; depressurization tools; Suction-type ECD reduction tool; High temperature and high pressure

Online: 8 July 2024 (14:17:02 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202404.0833.v1

Convenient Preparation, Thermal Properties and X-Ray Structure Determination of 2,3-Dihydro-5,6,7,8-tetranitro-1,4-benzodioxine (TNBD): a Promising High Energy Density Material (HEDM)

Jonas Šarlauskas

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: 1,4-benzodioxane; nitration; nitro derivatives; tetranitro; synthesis; X-ray crystallography; structure; thermal analysis; high energy high density material (HEDM)

Online: 12 April 2024 (08:03:59 CEST)

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Preprint REVIEW | doi:10.20944/preprints202104.0669.v1

The Possibility of a High-efficiency Wave Power Generation System using Dielectric Elastomers

Seiki Chiba, Mikio Waki, Changqing Jiang, Makoto Takeshita, Mitsugu Uejima, Kohei Arakawa, Kazuhiro Ohyama

Subject: Engineering, Automotive Engineering Keywords: dielectric elastomer; generation; carbon dioxide free; rare earths free; high efficiency; CNT; high power; artificial muscle; actuator; large deformation

Online: 26 April 2021 (13:09:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0622.v1

Influence of Preheating Temperature on Hardness and Microstructure of PBF Steel hs6-5-3-8

Jasmin Saewe, Markus Benjamin Wilms, Lucas Jauer, Johannes Schleifenbaum

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: LPBF; Laser Powder Bed Fusion; SLM; Selective Laser Melting; High-speed steel; tool steel; high carbon content; preheating temperature

Online: 29 January 2021 (13:09:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.1530.v1

The Seismic Performance of Self-Centering Ribbed Floor Flat Beam Frame Joints

Hongyu Chen, Fei Wang, Likun Li, Qixuan Liu, Xiandong Kang

Subject: Engineering, Civil Engineering Keywords: Prestressed friction joint; low frequency cyclic loading; Energy dissipation performance; Hybrid joint; Low damage

Online: 23 April 2024 (18:00:52 CEST)

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To achieve rapid post-earthquake repair of self-centering ribbed floor flat beam frame structures, a ductile hybrid joint consisting of dog bone weakened energy dissipating steel bars connected to the upper and lower column sections through high-strength threads based on the damage control design concept is proposed. By moving the ductile energy dissipating zone out to the locally weakened section of the energy dissipating steel bars and the locally unbonded prestressed steel bars in the core area, the residual deformation was limited and the seismic performance was improved. Based on the working principle of hybrid joints, low cycle loading tests were conducted on two joint specimens to analyze the influence of lateral prestress on the seismic performance of the hybrid joints. Numerical modeling methods were used to compare the position of the energy-consuming steel bars in the composite layer and the friction performance of joints. The research results indicated that the hybrid joint had stable load-bearing, deformation, and energy dissipation capabilities, with damage primarily concentrated on the energy-consuming steel bars. Even at an inter-story displacement angle of 5.5%, the upper and lower column segments remained elastic. After unloading, the connection seam at the joint was closed, and the self-centering performance was good. When the inter-story displacement angle reached 5.5%, the lateral prestress increased from 150 kN to 250 kN, the ultimate bearing capacity of the joint increased by 16.3%, and the cumulative energy consumption increased by 30.0%. The influence of the friction coefficient of the joint surface on the structural performance was set at a threshold of 0.7. When it was less than the threshold, the ultimate bearing capacity and initial stiffness of the joint increased with an increase in the friction coefficient. After reaching the threshold, the increase in the ultimate bearing capacity of the joint slowed down, and the rate of stiffness degradation gradually accelerated. This joint had excellent seismic performance and can also achieve post-earthquake repair of structures.

Preprint ARTICLE | doi:10.20944/preprints202404.1001.v1

Study on Local Vibration Control of 100m X-BOW Polar Exploration Cruise Ship

Guo he Jiang, Jia chen Chen, Hao Guo, Gang Wu, Zhen zhen Liu

Subject: Engineering, Marine Engineering Keywords: polar exploration cruise; frequency response analysis; modal equivalent mass; tuned mass dampers; mass ratio

Online: 16 April 2024 (11:37:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1634.v1

Transportation Disaster Trends and Impacts in Western Asia: A Comprehensive Analysis from 2003 to 2023

Zakaria A Mani, Krzysztof Goniewicz

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: transportation disasters; western Asia; accident frequency; road safety; data analysis; public awareness; infrastructure development

Online: 23 August 2023 (07:47:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1430.v1

A Pilot Study Examining the Dielectric Response of Human Forearm Tissues

Yang Yu, Anubha Manju Kalra, Gautam Anand, Andrew Lowe

Subject: Engineering, Bioengineering Keywords: multi‐frequency bioimpedance analysis (MF‐BIA); forearm; Cole model; dielectric properties; finite element method

Online: 20 July 2023 (11:50:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1247.v1

A Double-Threshold Channel Estimation Method Based on Adaptive Frame Statistics

Canghai Song, Xiao Zhou, Chengyou Wang, Zhun Ye

Subject: Engineering, Telecommunications Keywords: channel estimation; orthogonal frequency division multiplexing (OFDM); adaptive frame statistics (AFS); double-threshold (DT)

Online: 16 June 2023 (13:45:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202302.0150.v1

Cascade CFAR & SLA Ship Detector for Multi-Frequency SAR Data

Roberto Del Prete, Maria Daniela Graziano, Alfredo Renga

Subject: Engineering, Marine Engineering Keywords: Synthetic Aperture Radar; Maritime Monitoring; Multi-frequency; Multi-mission; Ship Detection; CFAR; Sublook Analysis

Online: 8 February 2023 (16:04:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0008.v1

Exploring Prosodic Features Modelling for Secondary Emotions Needed for Empathetic Speech Synthesis

Jesin James, Balamurali B.T, Catherine Watson, Hansjörg Mixdorff

Subject: Engineering, Electrical And Electronic Engineering Keywords: Secondary emotions; emotional speech synthesis; fundamental frequency contour; Fujisaki model; low-resource; empathetic speech

Online: 3 January 2023 (07:29:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0006.v1

A Nonlinear Radio-photon Conversion Device

Irina L. Vinogradova, Azat R. Gizatulin, Ivan K. Meshkov, Anton V. Bourdine, Manish Tiwari

Subject: Engineering, Electrical And Electronic Engineering Keywords: radio photonics; radio-over-fiber; orbital angular momentum; quadratic-nonlinear structure; difference frequency generation

Online: 1 February 2022 (12:02:54 CET)

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Working Paper ARTICLE

Visualizing the Echo of Evolution: Tandem Repeats and Sequence Structure of Chromosomes of Saccharomyces cerevisiae shown by Doublet Frequency Distance Maps

Johann Michael Köhler

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: DNA; Chromosomes; Yeast; Tandem Repeats; Evolution; Genetic Noise; Visualization; Doublet Frequency Maps; Sequence structure

Online: 6 August 2021 (14:25:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202105.0134.v1

Simulation and Modelling for a Three-Dimensional Ocean Surface Wave using and Inverse Fourier Transform

Young Jun Yang

Subject: Engineering, Marine Engineering Keywords: ocean surface wave simulation; inverse Fourier transform; directional wave spectrum; linear superposition; Nyquist frequency

Online: 7 May 2021 (09:42:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202101.0031.v1

Hemispheric Asymmetry in Visual Processing: An ERP Study on Spatial Frequency Gratings

Alice Mado Proverbio, Alberto Zani

Subject: Social Sciences, Psychology Keywords: ERPs; selective attention; global/local; cerebral hemispheres; VEPs; spatial frequency; Attentional tuning; Left hemisphere

Online: 4 January 2021 (12:27:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0236.v1

Harnessing Wind Energy with Hydrostatic Transmission Coupled to an Electromagnetic Frequency Regulator

Ariel S. L. Patriota, Ricardo F. Pinheiro, Gabriel I. Medina T.

Subject: Engineering, Electrical And Electronic Engineering Keywords: Electromagnetic Frequency Regulator; Hydrostatic transmission; Wind turbines; Feedback linearization; Variable load; Induction machine; Slip

Online: 6 November 2020 (09:26:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0037.v1

A Method for Assessing the Stability of Digital Automatic Control Systems (ACS) with Discrete Elements. Hypothesis and Simulation Results

Vladimir Kodkin, Alexander Baldenkov, Alexander Anikin

Subject: Engineering, Automotive Engineering Keywords: discreteness; frequency response; automatic control system; PID controller; variable structure system with sliding processes

Online: 2 November 2020 (11:40:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202007.0106.v1

Sociodemographic and Genetic Influences on Dietary Patterns and Their Influence on Health Outcomes in the Atlanta Center for Health Discovery and Well Being Cohort

Jingheng Chen, Xueying Huang, Thomas R. Ziegler, Dean P. Jones, Michelle Lampl, Arshed A. Quyyumi, Jane Clark, Gregory S. Martin, Kenneth L. Brigham, Greg Gibson

Subject: Biology And Life Sciences, Food Science And Technology Keywords: polygenic risk; wellness; food frequency; principal component analysis; healthy eating index; obesity; food desert

Online: 7 July 2020 (02:36:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0164.v1

Confidence Interval Estimation for Precipitation Quantiles Based on Principle of Maximum Entropy

Ting Wei, Songbai Song

Subject: Engineering, Control And Systems Engineering Keywords: Principle of maximum entropy; quantile estimation; confidence interval; Monte Carlo simulation; precipitation frequency analysis

Online: 16 January 2019 (10:11:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0163.v1

Speech Recognition and a Cymatics Based Configurable Speech Perception

Saeed MIAN QAISAR

Subject: Engineering, Electrical And Electronic Engineering Keywords: Cymatics, Speech recognition, Mel-Frequency Cepstral Coefficients (MFCC), Dynamic time warping (DTW), Chladni plates

Online: 7 November 2018 (13:42:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0146.v1

A New Method for Computing the Delay Margin for the Stability of Load Frequency Control Systems

Ashraf Khalil, Ang Swee Ping

Subject: Engineering, Electrical And Electronic Engineering Keywords: communication time delays; delay margin; delay dependent stability; load frequency control system; sweeping test

Online: 8 October 2018 (12:43:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201809.0599.v1

An Experimental Investigation of the Impact of Electromagnetic Radiations Emitted from Mobile Phone on General Health, pH, Flow Rate and Electrolytes Concentrations of Saliva in Female Adults

Etimad Alattar, Khitam Elwasife, Eqbal Radwan, Hadeer Abu Warda, Mohammed Abujami

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: electromagnetic radiations; mobile phone; saliva; electrolytes; flow rate; resting/unstimulated; stimulated saliva; radio-frequency

Online: 30 September 2018 (05:58:54 CEST)

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During the recent years, there has been a tremendous increase in use of mobile phones which resulted in an increase of the exposure to electromagnetic radiations in our life. Human saliva is considered as a potential source of biomarkers to monitor changes that occur under pathological conditions. The main objective of the current experiment was to determine the effect of mobile phone radiation on general health, electrolytes and salivary function among Islamic University students who use mobile phones. A questionnaire was designed and applied to 167 healthy and 36 deaf female students to select cases whose meeting the inclusion criteria. A total of 103 students who met the inclusion criteria were included to investigate the influence of mobile phone radiations on their general health. For assessment of salivary parameters, a total of 55 students were chosen and classified into three groups. Group I was the control group, which included 17 deaf students who did not use the mobile phone at all. Group II was healthy students who have mobile phone for less than 5 years. Group III was healthy students who have mobile phone for 5 years or more. Descriptive data that included mean, standard deviation, and percentages was calculated for each group. Multiple group comparisons were made by one-way analysis of variance (ANOVA) followed by Tukey test for pairwise comparisons. Categorical data were analyzed by Chi square (χ2) test. For all the tests, a P value of 0.05 or less was considered for statistical significance. The results showed that the participants who use mobile phone had several problems in their health including dry mouth, bad odor from mouth, drooling of saliva, as well as ear and eye pain. The majority of the participants who use mobile phone complained of headache, anxiety, insomnia and forgetfulness as compared to deaf participants. Also, the study showed that there was no significant difference between salivary pH in all tested groups. Regarding to salivary flow rate, the differences were no significant in all tested groups. In addition, this study has also shown that there was significant difference between the salivary Na+ and K+ levels of the three groups. Salivary level of Na+ and K+ were significantly lower in mobile phone users when compared to non users of mobile phone.

Preprint ARTICLE | doi:10.20944/preprints201803.0018.v2

Effects of Excitatory Repetitive Transcranial Magnetic Stimulation of the P3 Point in Chronic Stroke Patients – Case Reports

Ronaldo Luis da Silva, Angela Maria Costa de Souza, Francielly Ferreira Santos, Sueli Toshie Inoue, Johanne Higgins , Victor Frak

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: intraparietal sulcus; stroke; rTMS; Fugl-Meyer Assessment; fast frequency TMS; motricity; sensibility; chronic patients

Online: 17 April 2018 (08:35:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201706.0081.v3

Developing and Validating an Age-Independent Equation Using Multi-Frequency Bioelectrical Impedance Analysis for Estimation of Appendicular Skeletal Muscle Mass and Establishing a Cutoff for Sarcopenia

Yosuke Yamada, Miyuki Nishizawa, Tomoka Uchiyama, Yasuhiro Kasahara, Mikio Shindo, Motohiko Miyachi, Shigeho Tanaka

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: age-related skeletal muscle loss; sarcopenia; malnutrition risk assessment; DXA; multi-frequency BIA; aging

Online: 23 August 2017 (17:57:14 CEST)

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Background: Appendicular skeletal muscle (or lean) mass (ALM) estimated using dual-energy X-ray absorptiometry (DXA) is considered to be a preferred method for sarcopenia studies. However, DXA is expensive, has limited portability, and requires radiation exposure. Bioelectrical impedance analysis (BIA) is inexpensive, easy to use, and portable; thus BIA might be useful in sarcopenia investigations. However, a large variety of models have been commercially supplied by different companies, and for most consumer products, the equations estimating ALM are not disclosed. It is therefore difficult to use these equations for research purposes. In particular, the BIA equation is often age-dependent, which leads to fundamental difficulty in examining age-related ALM loss. The aims of the current study were as follows: (1) to develop and validate an equation to estimate ALM using multi-frequency BIA (MF-BIA) based on theoretical models, and (2) to establish sarcopenia cutoff values using the equation for the Japanese population. Methods: We measured height (Ht), weight, and ALM obtained using DXA and a standing-posture 8-electrode MF-BIA (5, 50, 250 kHz) in 756 Japanese individuals aged 18 to 86-years-old (222 men and 301 women as developing equation group and 97 men and 136 women as a cross validation group). The traditional impedance index (Ht²/Z₅₀) and impedance ratio of high and low frequency (Z₂₅₀/Z₅) of hand to foot values were calculated. Multiple regression analyses were conducted with ALM as dependent variable in men and women separately. Results: We created the following equations: ALM = (0.6947 × (Ht²/Z₅₀)) + (−55.24 × (Z₂₅₀/Z₅)) + (−10,940 × (1/Z₅₀)) + 51.33 for men, and ALM = (0.6144 × (Ht²/Z₅₀)) + (−36.61 × (Z₂₅₀/Z₅)) + (−9332 × (1/Z₅₀)) + 37.91 for women. Additionally, we conducted measurements in 1624 men and 1368 women aged 18 to 40 years to establish sarcopenia cutoff values in the Japanese population. The mean values minus 2 standard deviations of the skeletal muscle mass index (ALM/Ht²) in these participants were 6.8 and 5.7 kg/m² in men and women, respectively. Conclusion: The current study established and validated a theoretical and age-independent equation using MF-BIA to estimate ALM and provided reasonable sarcopenia cutoff values.

Preprint REVIEW | doi:10.20944/preprints202409.2005.v1

Research Progress on CoCrCuNi High-Entropy Alloys

Fachang Zhao, Xingming Zhao, Tianzhi Jiang, Honglin Li, Xue Liu, Ziqing Ai, Rongda Zhao, Fufa Wu

Subject: Metals, Alloys And Metallurgy, Chemistry And Materials Science Keywords: high-entropy alloys; CoCrCuNi system; microstructure; mechanical properties

Online: 25 September 2024 (17:59:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0538.v1

External Load Evaluation in Elite Futsal: Influence of Match Results and Game Location with IMU Technology

Héctor Gadea Uribarri, Carlos Lago-Fuentes, Ainhoa Bores-Arce, Victor Emilio Villavicencio Álvarez, Sergio López-García, Santiago Calero-Morales, Elena Mainer-Pardos

Subject: Public Health And Healthcare, Physical Therapy, Sports Therapy And Rehabilitation Keywords: load monitoring; home-advantage; high performance; team sports

Online: 5 July 2024 (13:47:28 CEST)

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Preprint REVIEW | doi:10.20944/preprints202406.1150.v1

An Examination of the Very First Polarimetric X-ray Observations of Radio-quiet Active Galactic Nuclei

Frédéric Marin, Vittoria Elvezia Gianolli, Adam Ingram, Dawoon E Kim, Andrea Marinucci, Daniele Tagliacozzo, Francesco Ursini

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: X-ray polarization; high-energy processes; black holes

Online: 17 June 2024 (14:45:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0818.v1

Dynamic Analysis of Stool Microbiota of Simmental Calves and Effects of Diarrhea on Their Gut Microbiota

Qianxun Wang, Mula Na, Shiyu Jia, Miao Sun, Song Gao, Shiwei Pan, Wu Dong, Yang Song, Jingfeng Yang

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: Calf diarrhea; Intestinal flora; High throughput 16S rRNA

Online: 12 June 2024 (09:39:43 CEST)

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Preprint REVIEW | doi:10.20944/preprints202405.2137.v1

Cross-Species Transmission of Highly Pathogenic Avian Influenza (HPAI) H5N1 Virus in the U.S. Dairy Cattle: A Comprehensive Review

Chithra C. Sreenivasan, Feng Li, Dan Wang

Subject: Biology And Life Sciences, Virology Keywords: high pathogenic avian influenza (HPAI); H5N1; cattle; transmission

Online: 31 May 2024 (12:19:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.1669.v1

Shock Absorption Capacity of High-Performance Polymers for Dental Implant Prosthesis: In Vitro Study

Maria Menini, Francesca Delucchi, Francesco Bagnasco, Domenico Baldi, Luigi Canullo, Paolo Setti, Marco Migliorati, Paolo Pesce

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: dental implants; shock absorption; high-performance polymers; polyetherketoneketone

Online: 23 January 2024 (10:00:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1679.v1

Two Novel Betarhabdovirids Infecting Ornamental Plants and the Peculiar Intracellular Behavior of the Cytorhabdovirus in the Liana Aristolochia gibertii

Pedro Luis Ramos-González, Maria Amelia Vaz Alexandre, Matheus Potsclam-Barro, Lígia Maria Lembo Duarte, Gianluca L. Michea Gonzalez, Camila Chabi-Jesus, Alyne F. Ramos, Ricardo Harakava, Harri Lorenzi, Juliana Freitas-Astúa, Elliot Watanabe Kitajima

Subject: Biology And Life Sciences, Virology Keywords: rhabdovirus; betanucleorhabdovirus; high-throughput sequencing; virion particles; cytopathology

Online: 23 January 2024 (09:50:15 CET)

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