Results 51 to 60 of about 267,117 (320)

Integrative systems‐level analysis reveals a contextual crosstalk between hypoxia and global metabolism in human breast tumors

open access: yesMolecular Oncology, EarlyView.
Breast tumor samples scored for metabolic deregulation (M1 to M3) were given a hypoxia score (HS). The highest HS occurred in patients with strongest metabolic deregulation (M3), supporting tumor aggressiveness. HS correlated with the highest number of metabolic pathways in M1. This suggests hypoxia to be an early event in metabolic deregulation.
Raefa Abou Khouzam   +2 more
wiley   +1 more source

Directional torsion and temperature discrimination based on a multicore fiber with a helical structure.

open access: yesOptics Express, 2018
We propose and experimentally demonstrate a directional torsion sensor based on a Mach-Zehnder interferometer formed in a multicore fiber (MCF) with a ~570-μm-long helical structure (HS). The HS was fabricated into the MCF by simply pre-twisting and then
Hailiang Zhang   +8 more
semanticscholar   +1 more source

Evaluation of synaptotagmin‐1 action models by all‐atom molecular dynamics simulations

open access: yesFEBS Open Bio, EarlyView.
We used molecular dynamics simulations to test models proposing that synaptotagmin‐1 facilitates membrane fusion by perturbing lipid bilayers, inducing membrane curvature and/or bridging membranes. The simulations show that synaptotagmin‐1 C2‐domains placed near the site of fusion hinder the ability of SNARE complexes to bring the membranes together ...
Josep Rizo   +2 more
wiley   +1 more source

Concrete beam subjected to shear and torsion: a comparison between the Brazilian Standard Code NBR 6118, ACI and AASHTO Provisions

open access: yesRevista IBRACON de Estruturas e Materiais, 2020
Most of torsion studies available are relative to pure torsion, arising from the exclusive application of a torsion moment in a concrete beam. This situation, however, is only possible in laboratories.
R. C. de ANDRADE, T. N. BITTENCOURT
doaj   +1 more source

Newton-Cartan gravity and torsion [PDF]

open access: yes, 2017
A bstractWe compare the gauging of the Bargmann algebra, for the case of arbitrary torsion, with the result that one obtains from a null-reduction of General Relativity.
E. Bergshoeff   +3 more
semanticscholar   +1 more source

Hydrogen sulfide repairs testicular damage induced by heat stress in rats

open access: yesFEBS Open Bio, EarlyView.
Heat stress can cause testicular damage and affect fertility. We investigated the potential protective role of hydrogen sulfide (H2S) against heat stress‐induced testicular injury and observed that H2S donor NaHS can effectively restore testicular damage in rats by inhibiting inflammation and oxidative stress. Our results suggest that H2S might be used
Xinyu Guo   +6 more
wiley   +1 more source

Bioengineering facets of the tumor microenvironment in 3D tumor models: insights into cellular, biophysical and biochemical interactions

open access: yesFEBS Open Bio, EarlyView.
The tumor microenvironment is a dynamic, multifaceted complex system of interdependent cellular, biochemical, and biophysical components. Three‐dimensional in vitro models of the tumor microenvironment enable a better understanding of these interactions and their impact on cancer progression and therapeutic resistance.
Salma T. Rafik   +3 more
wiley   +1 more source

TORSION OF THE TESTIS

open access: yesMedical Journal of Australia, 1966
Abstract A series of 56 proved cases of torsion of the testis is reviewed. The condition is rare, only 2 patients per year being admitted to a large general hospital of 800 beds. The aim of this study was to assess the fate of testes in relation to the duration of symptoms: if less than 12 hours the outlook is good, between 12 and 24 ...
openaire   +5 more sources

Discrete torsion [PDF]

open access: yesPhysical Review D, 2003
In this article we explain discrete torsion. Put simply, discrete torsion is the choice of orbifold group action on the B field. We derive the classification H^2(G, U(1)), we derive the twisted sector phases appearing in string loop partition functions, we derive M.
openaire   +2 more sources

Torsion Motives

open access: yesInternational Mathematics Research Notices, 2023
Abstract In this paper, we study Chow motives whose identity map is killed by a natural number. Examples of such objects were constructed by Gorchinskiy and Orlov [ 10]. We introduce various invariants of torsion motives, in particular, the $p$-level.
openaire   +2 more sources

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