Results 21 to 30 of about 441,679 (347)

Reduced Neutralization of SARS-CoV-2 Omicron Variant by Vaccine Sera and monoclonal antibodies

medRxiv, 2021
Due to numerous mutations in the spike protein, the SARS-CoV-2 variant of concern Omicron (B.1.1.529) raises serious concerns since it may significantly limit the antibody-mediated neutralization and increase the risk of reinfections.
A. Wilhelm, M. Widera, K. Grikscheit, T. Toptan, B. Schenk, C. Pallas, M. Metzler, N. Kohmer, S. Hoehl, F. Helfritz, T. Wolf, U. Goetsch, S. Ciesek   +12 more
semanticscholar   +1 more source

SARS-CoV-2 Omicron has extensive but incomplete escape of Pfizer BNT162b2 elicited neutralization and requires ACE2 for infection

medRxiv, 2021
The emergence of the Omicron variant (1) of SARS-CoV-2 in November 2021 in South Africa has raised concerns that, based on the large number of mutations in the spike protein and elsewhere on the virus (https://covdb.stanford.edu/page/mutation-viewer ...
S. Cele, Laurelle Jackson, K. Khan, D. Khoury, T. Moyo-Gwete, H. Tegally, C. Scheepers, D. Amoako, F. Karim, M. Bernstein, G. Lustig, D. Archary, Muneerah Smith, Y. Ganga, Z. Jule, K. Reedoy, D. Cromer, J. E. San, Shi-Hsia Hwa, J. Giandhari, J. Blackburn, B. Gosnell, S. Karim, W. Hanekom, A. von Gottberg, J. Bhiman, R. Lessells, M. S. Moosa, M. Davenport, Tulio de Oliveira, P. Moore, A. Sigal   +31 more
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Neutral Operator and Neutral Differential Equation [PDF]

Abstract and Applied Analysis, 2011
In this paper, we discuss the properties of the neutral operator (Ax)(t) = x(t) − cx(t − δ(t)), and by applying coincidence degree theory and fixed point index theory, we obtain sufficient conditions for the existence, multiplicity, and nonexistence of (positive) periodic solutions to two kinds of second‐order differential equations with the prescribed
Zhibo Cheng, Jingli Ren, Stefan Siegmund
openaire   +2 more sources

Research on the Influence of the Interfacial Properties Between a Cu3BiS3 Film and an InxCd1−xS Buffer Layer for Photoelectrochemical Water Splitting

Advanced Science, 2022
The ternary compound photovoltaic semiconductor Cu3BiS3 thin film‐based photoelectrode demonstrates a quite promising potential for photoelectrochemical hydrogen evolution.
Xiaomin Wu, Weidong Zhao, Yucheng Hu, Guohong Xiao, Huanyang Ni, Shigeru Ikeda, Yunhau Ng, Feng Jiang   +7 more
doaj   +1 more source

Neutralization of SARS-CoV-2 Omicron variant by sera from BNT162b2 or Coronavac vaccine recipients

medRxiv, 2021
Background The SARS-CoV-2 Omicron variant, designated as a Variant of Concern(VOC) by the World Health Organization, carries numerous spike protein mutations which have been found to evade neutralizing antibodies elicited by COVID-19 vaccines.
Lu Lu, B. Mok, Lin-lei Chen, Jim Kh H. Chan, O. Tsang, B. Lam, V. W. Chuang, A. W. Chu, W. Chan, J. D. Ip, Brian Chun-Yuan Chan, Ruiqi Zhang, C. Yip, V. Cheng, Kwok-Hung Chan, D. Jin, I. Hung, K. Yuen, Honglin Chen, K. To   +19 more
semanticscholar   +1 more source

Development of Neutral and Nearly Neutral Theories [PDF]

Theoretical Population Biology, 1996
A short history of the major features of neutral theories of molecular evolution is presented. Emphasis is placed on the nearly neutral theory, as this version of the neutral theory has explained the widest range of phenomena. The shift of interest from protein to DNA evolution is chronicled, leading to the modern view that silent and replacement ...
Tomoko Ohta, Tomoko Ohta, John H. Gillespie, John H. Gillespie   +3 more
openaire   +2 more sources

Deciphering the degradation discrepancy in Ni‐rich cathodes with a diverse proportion of [003] crystallographic textures

Carbon Energy, 2023
The crystal plane plays a very important role in the properties of Ni‐rich cathodes. [003] crystallographic texture regulation has been proven to improve structural stability, and yet, the discrepancy of particles with different exposed ratios of [003 ...
Lang Qiu, Mengke Zhang, Yang Song, Zhenguo Wu, Yan‐Fang Zhu, Jun Zhang, Dong Wang, Hai‐Yan Hu, Hong‐Wei Li, Hang‐Rui Liu, Xin‐Bei Jia, Jian Peng, Shuangqiang Chen, Zuguang Yang, Yao Xiao, Xiaodong Guo   +15 more
doaj   +1 more source

A niche for neutrality [PDF]

Ecology Letters, 2007
AbstractEcologists now recognize that controversy over the relative importance of niches and neutrality cannot be resolved by analyzing species abundance patterns. Here, we use classical coexistence theory to reframe the debate in terms of stabilizing mechanisms (niches) and fitness equivalence (neutrality).
Adler, Peter B., HilleRisLambers, Janneke, Levine, Jonathan M.   +2 more
openaire   +4 more sources

Carbon Quantum Dots Bridged TiO₂/CdIn₂S₄ toward Photocatalytic Upgrading of Polycyclic Aromatic Hydrocarbons to Benzaldehyde

Molecules, 2022
Conversion of hazardous compounds to value-added chemicals using clean energy possesses massive industrial interest. This applies especially to the hazardous compounds that are frequently released in daily life.
Jiangwei Zhang, Fei Yu, Xi Ke, He Yu, Peiyuan Guo, Lei Du, Menglong Zhang, Dongxiang Luo   +7 more
doaj   +1 more source

Broad betacoronavirus neutralization by a stem helix–specific human antibody

Science, 2021
Description Targeting a range of betacoranaviruses In the past 20 years, three highly pathogenic β-coronaviruses have crossed from animals to humans, including the most recent: severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). A spike protein
D. Pinto, M. M. Sauer, N. Czudnochowski, J. Low, M. A. Tortorici, M. P. Housley, Julia Noack, A. Walls, John E. Bowen, B. Guarino, Laura E. Rosen, J. di Iulio, Josipa Jerak, Hannah Kaiser, S. Islam, S. Jaconi, Nicole Sprugasci, K. Culap, R. Abdelnabi, C. Foo, Lotte Coelmont, I. Bartha, S. Bianchi, C. Silacci-Fregni, J. Bassi, R. Marzi, Eneida Vetti, Antonino Cassotta, A. Ceschi, P. Ferrari, Pietro E. Cippà, O. Giannini, S. Ceruti, C. Garzoni, A. Riva, F. Benigni, E. Cameroni, L. Piccoli, M. Pizzuto, M. Smithey, David Hong, A. Telenti, Florian A. Lempp, J. Neyts, C. Havenar-Daughton, A. Lanzavecchia, F. Sallusto, G. Snell, H. Virgin, M. Beltramello, D. Corti, D. Veesler   +51 more
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