Results 81 to 90 of about 1,973,931 (283)

Space-Time Variation of Physical Constants and Relativistic Corrections in Atoms [PDF]

, 1998
Detection of high-redshift absorption in the optical spectra of quasars have provided a powerful tool to measure spatial and temporal variations of physical ``constants'' in the Universe.
A. T. Nguyen, D. A. Varshalovich, D. C. Morton, D. C. Morton, G. Nave, I. I. Sobelman, J. C. Bergquist, J. D. Barrow, J. K. Webb, J. K. Webb, J. Sugar, L. L Cowie, M. J. Drinkwater, P. A. M. Dirac, R. E. Drullinger, T. Damour, T. Udem, V. A. Dzuba, V. A. Dzuba, V. A. Dzuba, V. A. Dzuba, V. A. Dzuba, V. A. Dzuba, V. V. Flambaum, W. Marciano   +24 more
core   +2 more sources

Spatial Variations in Vitreous Oxygen Consumption

PLOS ONE, 2016
We investigated the spatial variation of vitreous oxygen consumption in enucleated porcine eyes. A custom made oxygen source was fabricated that could be localized to either the mid or posterior vitreous cavity and steady state vitreous oxygen tension was measured as a function of distance from the source using a commercially available probe.
Murali, Karthik, Kang, Dongyang, Nazari, Hossein, Scianmarello, Nicholas, Cadenas, Enrique, Tai, Yu-Chong, Kashani, Amir, Humayun, Mark   +7 more
openaire   +5 more sources

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source

An Investigation of the Spatial Arrangement of Mycotoxin Build-Up in Corn Stored Under Different Environmental Conditions

Toxins
Mycotoxins are toxins produced by fungi that contaminate many key food crops as they grow in the field and during storage. Specific mycotoxins are produced by different fungi.
Ruth Kerry, Ben Ingram, Hamed K. Abbas, Gene Ahlborn   +3 more
doaj   +1 more source

Varying leptonic chemical potentials and spatial variation of primordial deuterium at high z

, 1997
We try to explain the spatial variation of primordial deuterium suggested by some observations by varying leptonic chemical potentials. The variation of the latter may take place in some scenarios of leptogenesis. The model predicts a large mass fraction
Dolgov, A. D., Pagel, B. E. J.
core   +1 more source

Spatial pattern formation induced by Gaussian white noise [PDF]

, 2011
The ability of Gaussian noise to induce ordered states in dynamical systems is here presented in an overview of the main stochastic mechanisms able to generate spatial patterns.
D'Odorico, Paolo, Laio, Francesco, Ridolfi, Luca, Scarsoglio, Stefania   +3 more
core   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Spatial variation of particle number concentration in school microscale environment [PDF]

, 2012
There is significant toxicological evidence of the effects of ultrafine particles (
Mazaheri, Mandana, Morawska, Lidia, Salimi, Farhad   +2 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source