Results 91 to 100 of about 2,243,337 (343)

Functional parameters of spermatozoa obtained by a new selection device

open access: yesFEBS Open Bio, EarlyView.
This study compares density gradient centrifugation and the LensHooke CA0™ device for sperm separation. DGC requires multiple steps, specialized equipment, and technical expertise. In contrast, the CA0 device offers key practical and methodological advantages, resulting in a faster, simpler, and more affordable sperm selection method.
Julio C. Chávez   +8 more
wiley   +1 more source

A COVID‐19 rapid antigen test employing upconversion nanoparticles

open access: yesSmart Molecules
The COVID‐19 pandemic has underscored the critical need for rapid and accurate diagnostic tools. Current methods, including Polymerase Chain Reaction and rapid antigen tests (RAT), have limitations in speed, sensitivity, and the requirement for ...
Le Zhang   +17 more
doaj   +1 more source

Poderosos com Causa: Ensinar, Aprender Educar

open access: yesRevista Portuguesa de Pedagogia, 2011
O autor explicita a relação entre ensinar, aprender e educar; e desenvolve a legitimidade da dimensão educativa do homem, com a consequente necessidade de todo o homem ser educado para poder ser educador.
Carlos Fernandes Maia
doaj   +1 more source

The E3 ubiquitin ligase, RNF219, suppresses CNOT6L expression to exhibit antiproliferative activity

open access: yesFEBS Open Bio, EarlyView.
We identified RNF219 as a CCR4‐NOT complex‐interacting E3 ubiquitin ligase that targets the CCR4‐NOT subunit CNOT6L for ubiquitination. RNF219 directly binds to the DUF3819 domain of CNOT1 through its putative α‐helix spanning amino acids 521–542. Our findings also suggest that antiproliferative activity of RNF219 is at least partially mediated by ...
Shou Soeda   +9 more
wiley   +1 more source

Vitamin C Is an Ideal Substitute for Hydrazine in the Reduction of Graphene Oxide Suspensions

open access: yes, 2010
The preparation of solution-processable graphene from graphite oxide typically involves a hydrazine reduction step, but the use of such a reagent in the large-scale implementation of this approach is not desirable due to its high toxicity.
M. J. Fernández-Merino   +6 more
semanticscholar   +1 more source

Ideals with an assigned initial ideal

open access: yes, 2008
14 pages, improved version, some more ...
ROGGERO, Margherita, TERRACINI, Lea
openaire   +3 more sources

CD9‐association with PIP2 areas is regulated by a CD9 salt bridge

open access: yesFEBS Open Bio, EarlyView.
The tetraspanin CD9 has an intracellular salt bridge. If CD9 opens, open‐CD9 moves from PIP2‐rich areas to regions populated by its interaction partner EWI‐2. Hence, the state of the salt bridge regulates the distribution of CD9 and by this CD9‐EWI‐2 complex formation.
Yahya Homsi   +2 more
wiley   +1 more source

Ideal reversible polymer networks.

open access: yesSoft Matter, 2018
In this article we introduce the concept of ideal reversible polymer networks, which have well-controlled polymer network structures similar to ideal covalent polymer networks but exhibit viscoelastic behaviors due to the presence of reversible ...
G. Parada, Xuanhe Zhao
semanticscholar   +1 more source

Unique factorization of ideals into nonfactorable ideals [PDF]

open access: yesProceedings of the American Mathematical Society, 1964
The purpose of this note is to prove a theorem which shows a connection between the definition of a prime ideal in classical algebraic number theory and the usual definition of a prime ideal. A proper ideal in an integral domain with unit element is an ideal different from the unit ideal and the zero ideal.
openaire   +3 more sources

Blocking the voltage‐gated sodium channel hNav1.5 as a novel pH‐dependent mechanism of action for tamoxifen

open access: yesFEBS Open Bio, EarlyView.
Patch‐clamp recordings revealed that tamoxifen inhibits voltage‐gated sodium channels, especially under acidic conditions, both common in metastatic cancer cells. These effects may explain certain antitumor properties of tamoxifen, highlighting a novel mechanism of action beyond its known endocrine effects.
Karl Josef Föhr   +5 more
wiley   +1 more source

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