Results 41 to 50 of about 424,658 (301)

Plasmon-pole approximation for semiconductor quantum wire electrons

open access: yes, 1996
We develop the plasmon-pole approximation for an interacting electron gas confined in a semiconductor quantum wire. We argue that the plasmon-pole approximation becomes a more accurate approach in quantum wire systems than in higher dimensional systems ...
A. Luther   +32 more
core   +1 more source

Aynı Anda Buharlaştırma Yöntemiyle Üretilen CIGS İnce Filmlerin Yapısal Özelliklerinin İncelenmesi ve Kutup Figürlerinin Belirlenmesi

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi
Bu çalışmada dörtlü element kompozisyonundan oluşan ve elektro-optik uygulamalarda sıkça kullanılan CIGS ince filmler, aynı anda termal buharlaştırma yöntemiyle üretilmiş, yapısal ve elektriksel özellikleri incelenmiştir.
Murat Kaleli   +2 more
doaj   +1 more source

Bayesian Analysis of Many-Pole Fits of Hadron Propagators in Lattice QCD [PDF]

open access: yes, 1996
We use Bayes' probability theorem to analyze many-pole fits of hadron propagators. An alternative method of estimating values and uncertainties of the fit parameters is offered, which has certain advantages over the conventional methods.
Bretthorst   +6 more
core   +2 more sources

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Effect of recent R_p and R_n measurements on extended Gari-Krumpelmann model fits to nucleon electromagnetic form factors

open access: yes, 2002
The Gari-Krumpelmann (GK) models of nucleon electromagnetic form factors, in which the rho, omega, and phi vector meson pole contributions evolve at high momentum transfer to conform to the predictions of perturbative QCD (pQCD), was recently extended to
A. Lung   +38 more
core   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

A review of microstructure and texture evolution with nanoscale precipitates for copper alloys

open access: yesJournal of Materials Research and Technology, 2020
Copper alloys are widely used in the lead frame, high-speed railway and other applications due to their high electrical conductivity and adequate mechanical properties. In this work, the texture and microstructure evolution under hot deformation of Cu-Ni-
Yongfeng Geng   +9 more
doaj   +1 more source

A stochastic model of Min oscillations in Escherichia coli and Min protein segregation during cell division

open access: yes, 2005
The Min system in Escherichia coli directs division to the centre of the cell through pole-to-pole oscillations of the MinCDE proteins. We present a one dimensional stochastic model of these oscillations which incorporates membrane polymerisation of MinD
Elowitz M B   +8 more
core   +2 more sources

Sigma pole position and errors of a once and twice subtracted dispersive analysis of pi-pi scattering data [PDF]

open access: yes, 2009
We show how the new precise data on kaon decays together with forward dispersion relations, sum rules and once- and twice-subtracted Roy's equations allow for a precise determination of the sigma meson pole position. We present a comparison and a study
Garcia-Martin, R.   +3 more
core   +3 more sources

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

open access: yesFEBS 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   +2 more
wiley   +1 more source

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