نتایج جستجو برای: physical property

تعداد نتایج: 803759  

2015
Zhiming Chen Zhengyang Bai Hui-jun Li Chao Hang Guoxiang Huang

A robust light storage and retrieval (LSR) in high dimensions is highly desirable for light and quantum information processing. However, most schemes on LSR realized up to now encounter problems due to not only dissipation, but also dispersion and diffraction, which make LSR with a very low fidelity. Here we propose a scheme to achieve a robust storage and retrieval of weak nonlinear high-dimen...

Journal: :Physical review letters 2010
Cecile Leduc Nenad Pavin Frank Jülicher Stefan Diez

In many subcellular force-generating systems, groups of motor proteins act antagonistically. Here, we present an experimental study of the tug of war between superprocessive kinesin-1 motors acting on antiparallel microtubule doublets in vitro. We found distinct modes of slow and fast movements, as well as sharp transitions between these modes and regions of coexistence. We compare our experime...

2006
J. XIAO Y. SHEN

The grain size composition of topsoil characterizes the soil texture and other physical properties. The coarsening of topsoil grain size is a visible symbol of land degradation; thereby the change in topsoil grain size can be potentially used to monitor desertification using remote sensing. This study proposes a new index for detecting topsoil grain size composition through ground in situ soil ...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2007
Reza Akbarpour Saul N Friedman Jeffrey H Siewerdsen John D Neary Ian A Cunningham

Fourier-based transfer theory is extended into the temporal domain to describe both spatial and temporal noise processes in quantum-based medical imaging systems. Lag is represented as a temporal scatter in which the release of image quanta is delayed according to a probability density function. Expressions describing transfer of the spatiotemporal Wiener noise power spectrum through quantum ga...

Journal: :Organic & biomolecular chemistry 2013
Dainius Janeliunas Rienk Eelkema Belén Nieto-Ortega Francisco J Ramírez Aguilar Juan T López Navarrete Lars van der Mee Marc C A Stuart Juan Casado Jan H van Esch

In this study we designed a new class of symmetrical facial oligothiophene amphiphiles, which could be obtained in fewer steps than for previously reported analogues, but still possess the specific substituent sequence to control their backbone curvature. This novel design allows the late-stage introduction of hydrophilic groups, aiding both purification and ease of structure variation. Followi...

2008
W. G. Hartley L. Gazzola F. R. Pearce S. T. Kay P. A. Thomas

The physical processes that define the spine of the galaxy cluster X-ray luminosity–temperature (L–T) relation are investigated using a large hydrodynamical simulation of the universe. This simulation models the same volume and phases as the millennium simulation and has a linear extent of 500 h Mpc. We demonstrate that mergers typically boost a cluster along but also slightly below the L–T rel...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2014
A Rebenshtok S Denisov P Hänggi E Barkai

Motion of particles in many systems exhibits a mixture between periods of random diffusive-like events and ballistic-like motion. In many cases, such systems exhibit strong anomalous diffusion, where low-order moments 〈|x(t)|(q)〉 with q below a critical value q(c) exhibit diffusive scaling while for q>q(c) a ballistic scaling emerges. The mixed dynamics constitutes a theoretical challenge since...

Journal: :computational methods for differential equations 0
mohammad mehdizadeh khalsaraei university of maragheh f. khodadosti university of maragheh

in this paper, a new implicit nonstandard finite difference scheme for conservation laws, which preserving the property of tvd (total variation diminishing) of the solution, is proposed. this scheme is derived by using nonlocal approximation for nonlinear terms of partial differential equation. schemes preserving the essential physical property of tvd are of great importance in practice. such s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1387

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