The Multidisciplinary Preprint Platform

Pre-Graduate and Post-Graduate Medical Education in the Health Sciences
Prof. Dr. Joaquín María García-Estañ López
Ecofriendly Materials
Dr. Manoj Gupta
EUSAR 2020—Preprints
Dr. Matthias Weiß
Teaching Sociology
Prof. Dr. Sandro Nuno Ferreira de Serpa
Food Analytical Methods
Prof. Dr. Gavino Sanna
Quantum Computing
Prof. Dr. Lester Ingber


Genomic Evidence of a Sars-Cov-2 Reinfection Case With E484K Spike Mutation in Brazil
To date, uncertainty remains about how long the protective immune responses against SARS-CoV-2 persists and the first reports of suspected reinfection began to be described in recovered patients months after ...
Evaluation of the Effect of D614G, N501Y and S477N Mutation in SARS-CoV-2 through Computational Approach
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes an outbreak of COVID-19 disease in humans with the aid of spike protein. It consists of a receptor-binding domain (RBD) that recognizes ...
COVID-19 Vaccine Hesitancy Worldwide: A Systematic Review of Vaccine Acceptance Rates
Utility of vaccine campaigns to control coronavirus disease 2019 (COVID-19) is not merely dependent on vaccine efficacy and safety. Vaccine acceptance among the general public and the healthcare workers, appears ...
Towards a Biomanufactory on Mars
A crewed mission to and from Mars may include an exciting array of enabling biotechnologies that leverage inherent mass, power, and volume advantages over traditional abiotic approaches. In this perspective, ...
Facing Racism and Sexism in Science by Fighting against Social Implicit Bias: A Latin and Black Woman Perspective.
The editors of several major journals have recently asserted the importance of combating racism and sexism in science. This is especially relevant now, as the COVID-19 pandemic may have led ...


Binder Saturation, Layer Thickness, Drying Time and Their Effects on Dimensional Tolerance and Density of Cobalt Chrome- Tricalcium Phosphate Biocomposite
Traditional metals such as stainless steel, titanium and cobalt chrome are used in biomedical applications (implants, scaffolds etc.) but suffer from issues such as osseointegration and compatibility with existing bone. ...
Lepton Pair Production with Only One Charge Available - Neutrino
According to observations leptons are always produced in pairs. Both particles can be electrically charged, or just one, in which case the charged particle is accompanied by a particle specific ...
Systematic Review of Human Poisoning and Toxic Exposures in Myanmar
The International Health Regulations (2005) promote national capacity in core institutions so countries can better detect, respond to and recover from public health emergencies. In accordance with the ‘all hazards’ ...
Repetition is Important to Students and Their Understanding During Laboratory Courses that Include Research
Course-based undergraduate research experiences (CUREs) provide students with opportunities for the same gains that apprenticed research with faculty members offer. As their popularity increases, it is important that critical elements ...
Metamaterials Demonstrating Negative Thermal Capacity
One-dimensional chain of core-shell pairs connected by ideal springs enables design of the metamaterial demonstrating the negative effective density and negative specific thermal capacity. We assume that the molar thermal ...
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Inclusion of COVID19 Preprints in the iSearch COVID-19 Portfolio

New Feature—Research Topics

Preservation Agreement Between Portico and Preprints

Our Policy on Submissions Related to COVID-19


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Authors upload their manuscript and supplementary files via the online submission system.
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Preprints editors carry out initial checks on content, decisions are made within 24 hours.
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Preprints that pass the initial checks are posted online, are immediately citable and open for comments.
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We accept preprints from all fields, so your article will always be a good fit.
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