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Preprint CASE REPORT | doi:10.20944/preprints202005.0209.v1

Heart Rate Variability in a Patient with Coronavirus Disease 2019

Christoph Baumann, Reiner Buchhorn, Christian Willaschek

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: COVID-19 virus disease; Autonomic nervous system; Electrocardiography; Heart rate

Online: 12 May 2020 (12:22:06 CEST)

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Working Paper BRIEF REPORT

Positive Rate Is Useful to Evaluate the Sufficiency of RT-PCR Test Availability for COVID-19

Sadao Suzuki

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: COVID-19; RT-PCR test; pre-test probability; positive rate

Online: 5 May 2020 (06:04:41 CEST)

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Working Paper CONCEPT PAPER

Infection-Genomics of COVID-19: Are Some Communities Resistant?

R. Manjunatha Kini, Swati Kundu

Subject: Biology And Life Sciences, Virology Keywords: ACE2; Spike protein; SARS-CoV2; death rate; polymorphism; isoform variant; CD157, sankramikogenomics

Online: 17 May 2020 (14:51:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0309.v1

Determining the Genetic Control of Common Bean Early-Growth Rate using Unmanned Aerial Vehicles

Travis A. Parker, Antonia Palkovic, Paul Gepts

Subject: Biology And Life Sciences, Plant Sciences Keywords: growth rate; vigor; UAV; sUAS; organic; weed competitiveness; Phaseolus vulgaris

Online: 19 April 2020 (01:30:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0093.v1

Characteristics of Carbohydrate Metabolism, Grain Quality and Yield Provide Insights into Rice-Tartary Buckwheat Improvement

Kai Liao, Yan Wang, Wujuan Yu, Chunyu Wei, Chenggang Liang

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: net photosynthetic rate; key enzymes activity; starch pasting viscosity; yield

Online: 5 March 2020 (12:20:24 CET)

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Preprint REVIEW | doi:10.20944/preprints202002.0099.v1

The Determination of HIV-1 RT Mutation Rate, Its Possible Allosteric Effects, and Its Implications on Drug Resistance

Joshua Yi Yeo, Ghin Ray Goh, Chinh Tran-To Su, Samuel Ken-En Gan

Subject: Biology And Life Sciences, Virology Keywords: retroviruses; HIV-1; reverse transcriptase; mutation rate; drug resistance, allostery

Online: 7 February 2020 (11:50:11 CET)

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Preprint COMMUNICATION | doi:10.20944/preprints201811.0231.v1

Comparison of Nano-Mechanical Behavior between Selective Laser Melted SKD61 and H13 Tool Steels

Jaecheol Yun, Van Luong Nguyen, Jungho Choe, Dong-yeol Yang, Hak-sung Lee, Sangsun Yang, Ji-Hun Yu

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: selective laser melting; SKD61 tool steel; nanoindentation; strain-rate sensitivity

Online: 9 November 2018 (03:37:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints201811.0103.v1

Central and Peripheral Fatigue Related to the Type of Exercise

José Trinidad Quezada Chacón, Edson Francisco Estrada Meneses, Gustavo Sierra Muñiz, Arnulfo Ramos-Jimenez, Felipe Reynoso Sánchez, Janeth Miranda Mendoza, German Hernánez Cruz

Subject: Medicine And Pharmacology, Orthopedics And Sports Medicine Keywords: acute physical stress; sports performance; heart rate variability; physical exhaustion

Online: 5 November 2018 (10:35:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0442.v1

Asymmetry in Exchange Rate Pass-Through to Consumer Prices: New Perspective from Sub-Saharan African Countries

Diby Francois Kassi, Gang Sun, Ding Ning, Akadje Jean Roland Edjoukou, Yobouet Thierry Gnangoin

Subject: Business, Economics And Management, Finance Keywords: asymmetry; exchange rate pass-through; NARDL; inflation; sub-Saharan Africa

Online: 19 October 2018 (08:03:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0206.v1

Innovative Multi-Site Photoplethysmography Analysis for Quantifying Pulse Amplitude and Timing Variability Characteristics in Peripheral Arterial Disease

Michael Bentham, Gerard Stansby, John Allen

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: cardiovascular variability; heart-rate variability; peripheral arterial disease; photoplethysmography; pulse

Online: 10 August 2018 (13:43:45 CEST)

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Preprint REVIEW | doi:10.20944/preprints201807.0443.v1

Can Genetic Factors Compromise the Success of Dental Implants? A Systematic Review and Meta-Analysis

Joel Ferreira Santiago Junior, Claudia Cristina Biguetti, Mariza Akemi Matsumoto, Guilherme Abu Halawa Kudo, Raquel Barroso Parra da Silva, Patrícia Pinto Saraiva, Walid D. Fakhouri

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: genetic factors; dental implants; bone quality; bone regeneration; success rate

Online: 24 July 2018 (06:01:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201806.0125.v1

Impact-Sliding Tribology Behavior of TC17 Alloy Treated by Laser Shock Peening

Meigui Yin, Wenjian Wang, Weifeng He, Zhenbing Cai

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Impact-sliding wear; Titanium alloy; Laser shock peening; Wear rate

Online: 7 June 2018 (15:13:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0106.v1

Complete Chloroplast Genome Sequences of Clematis: IR Expansion and Relative Rates of Synonymous Substitutions

Kyoung Su Choi, Keum Seon Jeong, Young-Ho Ha, Kyung Choi

Subject: Biology And Life Sciences, Plant Sciences Keywords: Clematis; chloroplast genome; rearrangement; inversion; IR expansion; synonymous substitution rate

Online: 9 April 2018 (10:34:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201803.0152.v1

Exergy Analyses of Onion Drying by Convection: Influence of Dryer Parameters on Its Performance

María Castro, Celia Román, Marcelo Echegaray, Germán Mazza, Rosa Rodriguez

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: onion drying; exergy analysis; exergetic improvement potential rate; sustainability index

Online: 19 March 2018 (09:44:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0270.v2

Improve the Three-phase Unbalance Rate of Railway System Under 2% By Three Kinds of Special Transformer Wiring

Chien-Hsu Chen, Chin E. Lin

Subject: Engineering, Electrical And Electronic Engineering Keywords: three-phase unbalance rate (TPUR); negative phase sequence unbalance rate (NPSUR); special transformer wiring (STW); Railway System Transport Cable (RSTC); Traction Supply Substation (TSS)

Online: 14 December 2021 (15:26:32 CET)

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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/preprints201903.0126.v4

Developing Bid-Ask Probabilities for High-Frequency Trading

Lester Ingber

Subject: Physical Sciences, Applied Physics Keywords: path integral; financial markets; high-frequency trading

Online: 8 May 2019 (08:47:44 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/preprints201804.0075.v1

High Frequency Acceleration Device Effect on Accelerated Aligner Exchange - A Pilot Study

Thomas Shipley

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: high frequency; acceleration; vibration; orthodontics; tooth movement

Online: 6 April 2018 (10:57:40 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/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/preprints202408.0359.v1

Enhancing the Quality of Polypropylene Recyclates: Predictive Modelling of Melt Flow Rate and Shear Viscosity

Lukas Seifert, Lisa Leuchtenberger-Engel, Christian Hopmann

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polypropylene; recycling; Melt Flow Rate; shear viscosity; symbolic regression; predictive modelling

Online: 5 August 2024 (23:27:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1953.v2

Access to Quality Seed, Credit, and Extension Services Are Key Factors Influencing the Adoption of Improved Wheat Production Technologies in the Irrigated, Heat-Prone, Arid Environments of Sudan

Abdelhamed Mohammed Magboul Ibrahim, Alawia Osman Hassan, Amani Ahmed Mohamed Idris, Yasir Serag Alnor Gorafi, Hisashi Tsujimoto, Izzat Sidahmed Ali Tahir

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Adoption rate; improved technologies; binary logistic; adopters; non-adopters; Sudan; sustainability.

Online: 1 July 2024 (10:59:44 CEST)

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Successful strategies that can contribute to poverty reduction and improve the livelihoods of the poor, particularly in Sub-Saharan Africa (SSA), are critically needed to address the technology adoption constraints. The objectives of this study were to assess the adoption rate of improved technologies and management practices and to identify the key factors influencing their adoption in the major wheat-producing areas of Sudan's irrigated, dry, and heat-prone environments. A farm survey was conducted in 2021 using a structured questionnaire that included all recommended technological options for optimum and sustainable wheat production. A total of 300 farmers, 93, 101, and 106 from Northern (NS), Kassala (KS), and Gezira (GS) states, respectively, were selected and interviewed. Besides descriptive statistics, a binary logistic model was used to identify the socioeconomic and production factors affecting farmers' perceptions of improved and recommended technological options. The study found a wide range of adoption rates depending on the specific technology practice and the area surveyed. The lowest adoption rate was observed for land preparation (6.5%) in NS. Adoption rates ranging from 26-100% were observed for technologies such as sowing date, seed rate, seed treatment, awareness of released varieties, nitrogen and phosphorus fertilizers application, and chemical weed control. The difference in the productivity of technological options adopters was significant (P = 0.015) compared to non-adopters. The binary logistic regression results showed that five out of seven explanatory variables hypothesized to influence wheat farmers' perceptions on the decision to adopt improved and recommended technologies significantly influenced farmers' decision to adopt the technologies. In particular, access to quality seed, financial credit, and extension services were found to be the most critical determinants of adopting improved technologies. Approaches that bring together all stakeholders along the crop value chain, including policymakers, to jointly analyze, identify, and prioritize challenges, develop and apply solutions and work plans using feedback and learning mechanisms are expected to increase farmer awareness and adoption of improved technologies, ultimately leading to sustainable wheat production.

Preprint ARTICLE | doi:10.20944/preprints202406.2057.v1

Minimum Isolation Distance to Prevent Cross Pollination between Grain Amaranth (Amaranthus hypochondriacus) and Wild Relatives

Canaan Nyambo, Tendai Madanzi, Nomsa Shoko, James Chitamba, Wendy Mutsa Chiota, Francis Mukoyi, Raymond Mugandani, Paramu Mafongoya

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Drought escape; contamination; pollen synchonisation; contamination rate; isolation distance; morphological marker

Online: 29 June 2024 (00:07:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1975.v1

Innovative Wood Fire Retardant Coating Based on Biocompatible Nanocellulose Surfactant and Expandable Graphite

Tereza Jurczyková, Elena Kmeťová, František Kačík, Martin Lexa, Jakub Ťoupal

Subject: Chemistry And Materials Science, Biomaterials Keywords: Nanomaterials, fire protection, thermal degradation, timber, relative mass loss, burning rate.

Online: 27 June 2024 (15:32:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0544.v1

Crossroads between Stability and Randomness of the Non-stationaryQueue’s Pointwise Stationary Fluid Flow Approximation modelCrossroads between Stability and Randomness of the Non-stationary Queue’s Pointwise Stationary Fluid Flow Approximation

Ismail A Mageed, Amina Becheroul

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: State variable; mean arrival rate; time; time dependent root parameter; PSFFA,

Online: 9 May 2024 (10:44:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1902.v1

Genetic Gain and Inbreeding Rate in Different Simulated Genomic Selection Schemes for Grain Yield and Oil Content in Safflower

Huanhuan Zhao, Majid Khansefid, Zibei Lin, Matthew Hayden

Subject: Biology And Life Sciences, Plant Sciences Keywords: genetic gain; inbreeding rate; safflower; simulation; grain yield; seed oil content

Online: 29 April 2024 (10:28:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.0386.v1

Advanced Detection of Cardiac Beat Intervals in Functional Near-Infrared Spectroscopy(fNIRS) through Signal Integration Reconstruction

Kyoung soo Kim, Taehoon Kim, Jihyun Cha

Subject: Computer Science And Mathematics, Signal Processing Keywords: Heartbeat; fNIRS; RR-interval; heart rate; HRV; Cardiac beat interval; algorithm

Online: 8 March 2024 (01:52:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0829.v1

Effects of Root Trace Nitrogen Reduction in Arid Areas on Sucrose Starch Metabolism and Yield of Flag Leaves and Grains of Spring Wheat under Drip Irrigation

Yilin Ma, Haiqi Wang, Jianguo Liu, Rongrong Wang, Ziqiang Che

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Spring wheat; Drip irrigation; Nitrogen application rate; Sucrose - starch metabolism; Yield

Online: 11 January 2024 (10:22:29 CET)

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To investigate the effect of nitrogen (N) application on carbon metabolism and yield of flag leaves and grains of spring wheat under drip irrigation in Xinjiang, a split - plot design was adopted from 2020 to 2021, with strong gluten wheat Xinchun 37 (XC37) and medium gluten wheat Xinchun 6 (XC 6) as the main plot factor and different nitrogen application rates as subplot factor. Four nitrogen application rates of 0, 210, 255 and 300 kg·hm-2 (CK2, B1, A1 and CK1, respectively) were set to analyze and compare the nitrogen response of key enzyme activity, soluble sugar, sucrose and starch content in flag leaves and grains to control yield formation. The results showed that with the increase of nitrogen application, Sucrose phosphate synthetase (SPS) and sucrose synthetase (SS) in flag leaves, SS in seeds, activities of adenosine diphosphate pyrophosphorylase (ADPG - PPase), soluble starch synthase (SSS), bound starch synthase (GBSS) and starch branching enzyme (SBE) in seeds, contents of soluble sugar and sucrose and yield in flag leaves increased first increasing and then decreasing. The A1 treatment (255 kg·hm-2) showed significant differences compared to other treatments, with increases of 7.95–158.33%, 8.69–155.12%, 7.65–53.25%, 5.41–62.83%, 2.85–85.52%, 3.08–57.30%, 8.87–79.16%, 9.33–196.55%, 9.43–112.78%, and higher levels of amylose, amylopectin, and total starch content than other treatments by 1.86–30.38%, 10.58–83.69%, and 7.96–63.09%, respectively. Correlation and stepwise regression analysis indicate highly significant positive correlation between yield and solube sugar and sucrose of flag leaves and grains, as well as their key emzymes and starch. Among them, soluble sugar in grains, amylopectin, and sucrose in grains have the greatest impact on the yield of XC37, determining 84.5% of its yield. SSS, soluble sugars in grains, amylopectin, and SBE have the greatest impact on the yield of XC 6, determining 80.4% of its yield. The starch shows a highly significant positive correlation with ADPG - PPase, SSS, GBSS, and SBE. There is a significant interaction effect between nitrogen application rate and variety, with better performance observed in Xinchun 37 compared to Xinchun 6. Under drip irrigation conditions in arid areas, nitrogen application of 255 kg·hm-2 can effectively regulate the metabolism of sucrose to starch in flag leaves and grains of spring wheat, which is conducive to the accumulation of starch in grains and the formation of yield.

Preprint ARTICLE | doi:10.20944/preprints202401.0487.v1

A Statistical Model for Identifying Collusive Bidding Based on Historical Quotations

Jieni Li, Fei Xie, Hongchao Guo

Subject: Business, Economics And Management, Econometrics And Statistics Keywords: collusive bidding; historical quotations; coefficient of variation; deviation rate; statistical model

Online: 8 January 2024 (01:19:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0633.v1

A Complete Pipeline for Heart Rate Extraction from Infant ECG

Harry T. Mason, Astrid Priscilla Martinez-Cedillo, Quoc C. Vuong, M. Carmen Garcia-de-Soria, Stephen Smith, Elena Geangu, Marina I. Knight

Subject: Computer Science And Mathematics, Signal Processing Keywords: ECG; Infant ECG; Heart Rate; R-Peaks; Open-Source; Naturalistic; Longform

Online: 8 December 2023 (14:39:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1042.v1

Ignition delay and burning rate analysis of diesel-carbon nanotube blends stabilized by surfactant: a droplet scale study.

Anderson Gallego, Karen Cacua, David Gamboa, Jorge Luis Rentería Peláez, Bernardo Herrera

Subject: Engineering, Energy And Fuel Technology Keywords: Ignition delay; Burning rate; Carbon nanotubes; Commercial diesel; sodium dodecylbenzene sulfonate.

Online: 18 October 2023 (02:56:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0510.v1

Chronic Environmental Exposure to Cadmium Increases Blood Pressure

Soisungwan Satarug, Phisit Pouyfung, David A. Vesey, Tanaporn Khamphaya, Supabhorn Yimthiang

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: albuminuria, blood pressure; cadmium; DBP; diabetes; glomerular filtration rate; hypertension; SBP

Online: 9 October 2023 (09:40:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0339.v1

Carbon Accumulation and the Possibility of Carbon Losses by Vertical Movement of Dissolved Organic Carbon in West Siberian Peatlands

Evgeny A. Zarov, Elena D. Lapshina, Iris Kuhlmann, Ernst Detlef Schulze

Subject: Environmental And Earth Sciences, Environmental Science Keywords: AMS radiocarbon dating; Mukhrino bog; peat accumulation rate; peatland stratigraphy; POC

Online: 6 October 2023 (12:22:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0537.v1

A Study of Urban Climate Resilience and Its Influencing Factors in China

Li Cunpu, Pan Lishuo, He Jing

Subject: Business, Economics And Management, Economics Keywords: Climate change; urban climate resilience; regional differences; fiscal expenditure; urbanization rate

Online: 7 September 2023 (09:44:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.2078.v1

The Role of Strength-Related Factors on Psychological Readiness for Return to Sport following Anterior Cruciate Ligament (ACL) Reconstruction

Oliver Lee, Mark A Williams, Clare D Shaw, Anne Delextrat

Subject: Public Health And Healthcare, Physical Therapy, Sports Therapy And Rehabilitation Keywords: angle-specific torque; rate of force development; time since surgery; rehabilitation

Online: 30 August 2023 (11:19:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1770.v1

Evaluation of Clinical Outcomes after Poor-Quality Embryo Transfer and Prognostic Parameters

Nezaket KADIOĞLU, Inci KAHYAOĞLU, İskender KAPLANOĞLU, Serdar DİLBAZ, Yaprak ENGIN ÜSTÜN

Subject: Medicine And Pharmacology, Reproductive Medicine Keywords: In vitro fertilization; gonadotropin dose; live birth rate; poor embryo quality

Online: 25 August 2023 (07:11:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0692.v1

In the wild Affect Analysis of Children with ASD using Heart rate

Kamran Ali, Sachin Shah, Charles E Hughes

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Emotion Recognition; smart bracelet; heart rate; wearable; Autism Spectrum Disorder (ASD)

Online: 21 April 2023 (08:38:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0428.v1

Studies of Water-Aluminum Scrap Reaction Kinetics in Two Steps and Efficiency of the Green Hydrogen Production

Ansis Mezulis, Christiaan Richter, Peteris Lesnicenoks, Ainars Knoks, Sarunas Varnagiris, Marius Urbonavicius, Darius Milcius, Janis Kleperis

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: aluminum waste; aluminum hydrolysis; alkali promoter; reaction rate; hydrogen production efficiency

Online: 17 April 2023 (08:50:00 CEST)

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Preprint REVIEW | doi:10.20944/preprints202209.0146.v1

Basal Metabolism, Body Composition and Physical Activity with Central Obesity in Adults: A Systematic Review

Génesis Chen, Claudia Lora, Diana Rodríguez, Victoria Valdés, Fabiana Pirán, Alex Brito, Israel Ríos-Castillo

Subject: Biology And Life Sciences, Endocrinology And Metabolism Keywords: central obesity; waist circumference; physical activity; basal metabolic rate; body composition

Online: 12 September 2022 (11:36:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0113.v1

Liquid Metal-assisted In-situ Control of Temperature Field for Additive Manufacturing of Titanium Alloys

Xiaohan Zhang, Min Xia, Yaowu Hu

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: Liquid metal; Additive manufacturing; Thermal management; Temperature gradient; Cooling rate; Crack

Online: 4 August 2022 (16:23:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0399.v1

Theoretical Perspectives on the Gas-phase Oxidation Mechanism and Kinetics of Carbazole Initiated by OH Radical in the Atmosphere

Zhuochao Teng, Xiaotong Wang, Mohammad Hassan Hadizadeh, Yanan Han, Xianwei Zhao, Qi Zhang, Hetong Wang, Ying Li, Fei Xu, Yanhui Sun

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: carbazole; OH radical; rate constants; oxidation mechanism; density functional theory (DFT)

Online: 29 June 2022 (08:19:43 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202205.0329.v1

Apple Watch for Pulse Rate Assessment Detects Unidentified Paroxysmal Atrial Fibrillation

Kiichi Hirota, Maretoshi Hirai

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: Apple Watch; wearable sensor; pulse rate; arrhythmia; atrial fibrillation; case report

Online: 24 May 2022 (09:49:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0111.v1

Influence of Different Tillage Depth on Soil and Maize Yields in Three Growing Seasons in the North China Plain

Li-Shu Wang, Hai-Gang Guo, Li-Xuan Wang, Dong-Juan Cheng

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Soil bulk density; Water consumption; Rotary tillage; Photosynthetic rate; Field capacity

Online: 12 April 2022 (10:41:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0257.v1

Cautionary Observations Concerning the Introduction of Psychophysiological Biomarkers into Neuropsychiatric Practice

Paul E. Rapp, Christopher Cellucci, David Darmon, David Keyser

Subject: Medicine And Pharmacology, Psychiatry And Mental Health Keywords: biomarkers; electroencephalography; event related potentials; heart rate variability; diagnosis; sensitivity; specificity

Online: 17 March 2022 (15:19:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0101.v1

Mixed Solvents in Multi-Layer Ceramic Capacitors (MLCC) Elec-Tronic Paste and Their Effects on the Properties of Organic Vehicle

Ruolong Gan, Junrong Li, Xiuhua Cao, Jun Huang, Liying Qian

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: electronic paste; organic vehicle; mixed-solvents; solubility parameter; low residual rate

Online: 7 December 2021 (11:46:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202003.0086.v2

Toward the Modeling of Russia's Monetary System

S.M. Borodachev

Subject: Business, Economics And Management, Economics Keywords: broad money supply; currency outflow; money creation; exchange rate; Kalman filter

Online: 20 September 2021 (10:36:27 CEST)

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Working Paper ARTICLE

Immunomodulatory Effect of Charak Immunity Tablets (CIT) On Healthy Participants: A Single Blind, Randomized, Placebo-Controlled, Exploratory Study

Akanksha Mourya, Amit Yadav, Suresh Khadke, Sarika Mane, Asavari Joshi, Poonam Gupte, Madhavi Mahajan, Supriya Bhalerao

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: CD4- CD8 counts; immunity; inflammation; oxidative stress; peak expiratory flow rate

Online: 14 September 2021 (14:43:16 CEST)

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Immunity has become an important aspect of concern, as the spread of corona virus, is on the rise. The strategies to boost and modulate the immunity have therefore become need of the hour. The present study was carried out to evaluate the effect of Charak immunity Tablets (CIT) on innate and adaptive immune response in healthy individuals. It was a single-blind, randomized, placebo-controlled, exploratory study. After obtaining Ethics Committee permission, 36 healthy individuals of either sex aged 18-35 years with prior consent were recruited in the study. They were randomly divided into 2 groups to receive either CIT or Placebo in 2:1 ratio. Both the interventions were given in a dose of 1 tab (500 mg) twice daily. The assessment variables were vitals [temperature, pulse, and blood pressure], respiratory health [respiratory rate, oxygen saturation and peak expiratory flow rate], questionnaire based assessment of immune status, perceived stress and quality of life along with objective assessment of immunity [CD4+, CD8+ counts, Interferon gamma (IFN γ), Tumor necrosis factor alpha (TNF-α) and Interleukin 10 (IL-10)] as well as oxidative stress; [Malondialdehyde (MDA) and Glutathione peroxidase], which were assessed at fixed time points. Of 36 recruited participants, only 18 participants completed the study. CIT treated individuals showed a statistically significant improvement in respiratory health, quality of life, perceived stress and subjective immune status. There was a decrease in the levels of serum IFN γ on day 60 compared to baseline. TNF-α and IL-10, both estimated from supernatant of Peripheral Blood Mononuclear Cells (PBMCs) stimulated with lipopolysaccharide (LPS), showed a decrease and a significant increase respectively on day 60 compared to baseline in CIT group. Further, CIT significantly decreased MDA levels.The present study indicates that CIT is an effective and safe drug to boost immunity. However, our findings need to be confirmed in larger sample size using more specific immune parameters.

Preprint ARTICLE | doi:10.20944/preprints202107.0016.v1

Comparison Between Tailor-Made-ANN Techniques and Fuzzy c-Mean Clustering Technique in Industrial Laborers' Accident-Rates Prediction Modelling Based on Human Factors

Muhammad M.A.S. Mahmoud

Subject: Computer Science And Mathematics, Computer Science Keywords: Industrial Laborers, Accident rate, Artificial neural network, Human factor, Predictive models

Online: 1 July 2021 (11:17:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202106.0234.v1

Computational Fluid Dynamic (CFD) Simulation of Bifurcate Artery

Yas Barzegar, Atrin Barzegar

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: flow pattern; Artery wall; heart muscle; flow rate; computational fluid dynamic

Online: 8 June 2021 (13:39:40 CEST)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202104.0286.v1

Covid 19: Did Preventive Restrictions Work?

Rohini Kharate, Milind Watve

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: Covid-19; lockdown; preventive restriction; rate of transmission; public health policy

Online: 12 April 2021 (12:23:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0644.v1

Stress Classification of ECG-Derived HRV Features Extracted from Wearable Devices

Kayisan Mary Dalmeida, Giovanni Luca Masala

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: stress; wearable device; machine learning; smart watch; heart rate variability; electrocardiogram

Online: 25 March 2021 (16:24:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0614.v1

Material Similarity of Scaled Models

Shuai Wang, Fei Xu, Xiaoyu Zhang, Leifeng Yang

Subject: Engineering, Automotive Engineering Keywords: Material number; Similarity; Scaling; Strain hardening; Strain rate; Temperature; Structural impact

Online: 24 November 2020 (11:04:32 CET)

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When different strain hardening and strain rate sensitive materials are used for scaled model and prototype, the traditional pure geometrical similarity laws of solid mechanics will fail. Although correcting the basic scaling factors of velocity, density and geometry have been developed to compensate for the material distortion in recent non-geometric scaling works, it is difficult to be widely used because of its inherent indirect (depending on the structural strain and strain rate responses) and inexact (having significant prediction errors for prototype) defects. In this paper, a framework of material similarity, based on the new suggested material dimensionless numbers and the ‘Material number vs. strain/strain-rate’ function curves, are further developed, which represents the objective requirement of similarity theory for the basic mechanical properties of materials. It is demonstrated what is similitude materials of solid mechanics and how to use the best similitude materials to overcome the non-scalabilities of materials for identical or different materials. The direct and exact solution of the basic correction factors is further obtained and therefore overcomes the previous inherent indirect and inexact defects radically. Based on the similarity evaluation of different materials of the classical constitutive models, the impacted structures of circular plate and crooked plate with strain hardening and strain rate sensitive materials are verified numerically. The results show the completely different materials can be exact similitude for various structural behaviors (strain, strain rate, stress and displacement) of time and space fields after using the best similitude materials; and the basic correction factors do not depend on the structural strain and strain rate responses. As a contrast, when the non-similitude materials are used, the similarity results are very sensitive to the selection of strain/strain-rate and often leads to failed predictions. In addition, for the material elastic and temperature effects, the proposed method is also discussed to be valid.

Preprint SHORT NOTE | doi:10.20944/preprints202011.0284.v1

A Statistical Analysis on Recovery Cases of Covid19 in India

JAYDIP DATTA

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: Covid19; Best fit regression; Hyperbolic fit; Recovery rate; Reproducibity of research

Online: 9 November 2020 (16:15:21 CET)

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Preprint SHORT NOTE | doi:10.20944/preprints202011.0267.v1

Forecast of Growth and Development of Modal Fir Stands in the Lower Angara Region

Pavel Mikhaylov Mikhaylov, Svetlana Sultson, Andrey Goroshko

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Siberian fir; regression model; forest type group; bonitet; growth rate table

Online: 9 November 2020 (09:11:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202009.0609.v1

On the Global Asymptotic Stability of A Two Dimensional System of Difference Equations with Quadratic Terms

Erkan Taşdemir

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: difference equations; dynamical systems; global stability; rate of convergence; boundedness; oscillation

Online: 25 September 2020 (11:44:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0600.v1

Computational Micro-Macro Analysis of Impact on Strain-Hardening Cementitious Composites (SHCC) Including Microscopic Inertia

Erik Tamsen, Iurie Curosu, Viktor Mechtcherine, Daniel Balzani

Subject: Engineering, Civil Engineering Keywords: Computational Homogenization; Impact; Microscopic Inertia; SHCC; ECC; Fiber Pullout; Rate Effect

Online: 25 September 2020 (09:44:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0652.v1

An Approach Towards Motion-Tolerant PPG-Based Algorithm for Real-Time Heart Rate Monitoring of Moving Pigs

Ali Youssef, Alberto Peña Fernández, Laura Wassermann, Svenja Biernot, Eva-Maria Wittauer, Andre Bleich, Joerg Hartung, Daniel Berckmans, Tomas Norton

Subject: Engineering, Bioengineering Keywords: Pig’s Heart Rate; Photoplethysmography (PPG); Continuous Wavelet Transform (CWT); Motion Artefacts

Online: 26 July 2020 (17:58:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0651.v1

Non-Invasive PPG-Based System for Continuous Heart Rate Monitoring of Incubated Avian Embryo

Ali Youssef, Daniel Berckmans, Tomas Norton

Subject: Engineering, Bioengineering Keywords: Embryonic Heart Rate; Photoplethysmography (PPG); Continuous Wavelet Transform (CWT); Spectral Entropy

Online: 26 July 2020 (17:50:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0297.v1

Signal Fluctuations and the Information Transmission Rates in Binary Communication Channels

Agnieszka Pregowska

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: information source; information transmission rate; fluctuations; entropy; standard deviation; spike-trains

Online: 14 July 2020 (10:57:02 CEST)

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(1) Background: In nervous system information is conveyed by a sequence of action potentials, called spikes-trains. As MacKay and McCulloch proposed, spike-trains can be represented as bits sequences coming from Information Sources. Previously, we studied relations between Information Transmission Rates (ITR) carried out by the spikes, their correlations, and frequencies. Here, we concentrate on the problem of how spikes fluctuations affect ITR. (2) Methods: The Information Theory Method developed by Shannon is applied. Information Sources are modeled as stationary stochastic processes. We assume such sources as two states Markov processes. As a spike-trains' fluctuation measure, we consider the Standard Deviation sigma, which, in fact, measures average fluctuation of spikes around the average spike frequency. (3) Results: We found that character of ITR and signal fluctuations relation strongly depends on the parameter s which is a sum of transitions probabilities from no spike state to spike state and vice versa. It turned out that for smaller s (s<1) the quotient ITR\sigma has a maximum and can tend to zero depending on transition probabilities. While for s large enough (1<s) the ITR\sigma is separated from 0 for each s. Similar behavior was observed also when we replaced Shannon entropy terms in Markov entropy formula by their approximation with polynomials. We also show that the ITR quotient by Variance behaves in a completely different way. (4) Conclusions: Our results show that for large transition parameter s the Information Transmission Rate by sigma will never decrease to zero. Specifically, for 1<s<1.7 the ITR will be always, independently on transition probabilities which form this s, above the level of fluctuations, i.e. in this case we have sigma<ITR. Thus, we conclude that in a more noisy environment, to get appropriate reliability and efficiency of transmission, Information Sources with higher tendency of transition from the state no spike to spike state and vice versa should be applied.

Preprint ARTICLE | doi:10.20944/preprints202006.0242.v1

Associating Unemployment with Panic Attack Using Stacked-RNN Model During COVID-19

Samir Bandyopadhyay, SHAWNI DUTTA

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: panic disorder; unemployment rate; RNN; deep learning; mental illness; COVID-19

Online: 19 June 2020 (12:13:41 CEST)

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Preprint REVIEW | doi:10.20944/preprints202004.0449.v2

An Updated Primer on SARS-CoV-2 and the Evolving Covid-19 Pandemic

Subramani Mani

Subject: Public Health And Healthcare, Health Policy And Services Keywords: SARS-CoV-2; Covid-19; pandemic; primer; India; mortality rate; evolution; updated primer; evolving pandemic

Online: 1 June 2020 (11:08:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202003.0041.v1

Effect of Ultrasonic-assisted and Microwave-assisted Technology on Bioactive Compounds and Aroma Quality of Instant Green Tea

Xiaozhou Zhou, Xiuhua Fu, Zhusheng Fu, Xingqian Ye

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: ultrasonic wave; microwave; instant green tea; extraction rate; active components; aroma

Online: 3 March 2020 (11:38:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201907.0062.v1

Assessment of Ultra-Short Heart Variability Indices Derived by Smartphone Accelerometers for Stress Detection

Federica Landreani, Andrea Faini, Alba Martin-Yebra, Mattia Morri, Gianfranco Parati, Enrico Caiani

Subject: Medicine And Pharmacology, Other Keywords: ballistocardiography; seismocardiography; ultra-short heart rate variability; stress evaluation; smartphone; accelerometers

Online: 3 July 2019 (10:49:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201905.0014.v1

Phototactic Response of the Oriental Armyworm, Mythimna separata (Lepidoptera: Noctuidae), to Light-Emitting Diode Lights of Different Wavelengths

Kil-Nam Kim, Hye-Sung Song, Ryong-Jin Choe, Zhi-Juan Huang, Qiu-Ying Huang, Chao-Liang Lei

Subject: Biology And Life Sciences, Insect Science Keywords: phototactic response; Mythimna separata; LED; wavelength; attraction rate; luminance intensity; sensitivity

Online: 5 May 2019 (11:18:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201902.0223.v1

Model Based on an Effective Material Removal Rate to Evaluate the Specific Energy Consumption in Grinding

A. Nápoles Alberro, H.A González Rojas, A.J. Sánchez Egea, S. Hameed, R.M. Peña Aguilar

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: power consumption; material removal rate; specific energy consumption; grain density; modeling

Online: 25 February 2019 (10:01:43 CET)

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Preprint REVIEW | doi:10.20944/preprints201810.0653.v3

A Trajectory-Based Method to Explore Reaction Mechanisms

Saulo A. Vázquez, Xose L. Otero, Emilio Martinez-Nunez

Subject: Chemistry And Materials Science, Theoretical Chemistry Keywords: automated algorithm; molecular dynamics; graph theory; statistical rate theory; kinetics simulations

Online: 2 December 2018 (09:39:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0125.v1

What Moves the Labor Force Participation Rate?

David H. Bernstein

Subject: Business, Economics And Management, Economics Keywords: labor force participation rate; general to specific modelling; step indicator saturation

Online: 8 October 2018 (05:00:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201805.0472.v1

Modeling the Kinetics, Dynamic Profiles and Strategies for Optimal Efficacy of Photo-Polymerization in Thick Polymers

Jui-Teng Lin, Kuo-Ti Chen, Hsia-Wei Liu, Da-Chuan Cheng

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polymerization theory; photo polymerization kinetic; photoinitiation rate; polymerization efficacy; photodynamic therapy.

Online: 31 May 2018 (11:25:02 CEST)

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