다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1（PfPMP1）与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员，通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A

http://www.maths.qmul.ac.uk/%7Elatora/report_06.pdf

Complex networks: Structure and dynamics

Modern nanotechnology allows one to scale down various important devices (sensors, chips, fibers, etc.) and thus opens up new horizons for their applications. The efficiency of most of them is based on fundamental physical phenomena, such as transport of wave excitations and resonances. Short propagation distances make phase-coherent processes of waves important. Often the scattering of waves involves propagation along different paths and, as a consequence, results in interference phenomena, where constructive interference corresponds to resonant enhancement and destructive interference to resonant suppression of the transmission. Recently, a variety of experimental and theoretical work has revealed such patterns in different physical settings. The purpose of this review is to relate resonant scattering to Fano resonances, known from atomic physics. One of the main features of the Fano resonance is its asymmetric line profile. The asymmetry originates from a close coexistence of resonant transmission and resonant reflection and can be reduced to the interaction of a discrete (localized) state with a continuum of propagation modes. The basic concepts of Fano resonances are introduced, their geometrical and/or dynamical origin are explained, and theoretical and experimental studies of light propagation in photonic devices, charge transport through quantum dots, plasmon scattering in Josephson-junction networks, and matter-wave scattering in ultracold atom systems, among others are reviewed.

/pdf/fano-resonances-in-nanoscale-structures-2c8qeas3bm.pdf

Fano resonances in nanoscale structures

The synchronization of chaotic systems

Comprehensive CFD modelling of solar fast pyrolysis of beech wood pellets

We describe a phase-conjugate interferometer that consists of a partially transmitting conventional mirror placed in front of and in close proximity to a phase-conjugate mirror. The interferometer is self-referencing, compact, and insensitive to environmental disturbances, provides twice the sensitivity of conventional (nonphase-conjugate) interferometers, and produces a direct representation of an incident wave front. We have constructed such a device using internally self-pumped phase conjugation in barium titanate and have used the device to characterize the wave front produced by an aberrated optical system.

Phase-conjugate Fizeau interferometer.

Many features of the sequence of action potentials produced by repeated stimulation of a cardiac patch can be modeled by a 1D mapping, but not the full behavior observed in the restitution portrait: in particular, not (i) distinct slopes for dynamic and S1-S2 restitution (rate dependence) and not (ii) long transients in the approach to steady state (accomodation). To address these shortcomings, \emph{ad hoc} 2D mappings, where the second variable is a ``memory'' variable, have been proposed; it seems that these models exhibit some, but not all, of the relevant behavior. In this paper we introduce a new 2D mapping and determine a set of parameters for it that gives a rather accurate description of the full restitution portrait found for one animal. The changes in the mapping, compared to previous models, result from requiring that the mapping can be derived as an asymptotic limit of a simple ionic model. Among other benefits, one can interpret the parameters in the mapping in terms of the ionic model. The ionic model is an extension of a two-current model that adds a third dependent variable, a generalized concentration. The simplicity of the ionic model and the physiological basis for the mapping contribute to the usefulness of these ideas for describing restitution data in a variety of contexts. The fitting procedure is straightforward and can easily be applied to obtain a mathematical model for data from other experiments, including experiments on different species. Uniqueness of the parameter choice is also discussed.

An ionically based mapping model with memory for cardiac restitution

We consider the process of four-wave mixing in an array of gold nanowires strongly coupled to a gold film. Using full-wave simulations, we perform a quantitative comparison of the four-wave mixing efficiency associated with a bare film and films with nanowire arrays. We find that the strongly localized surface plasmon resonances of the coupled nanowires provide an additional local field enhancement that, along with the delocalized surface plasmon of the film, produces an overall four-wave mixing efficiency enhancement of up to six orders of magnitude over that of the bare film. The enhancement occurs over a wide range of excitation angles. The film-coupled nanowire array is easily amenable to nanofabrication, and could find application as an ultra-compact component for integrated photonic and quantum optic systems.

Enhancing four-wave-mixing processes by nanowire arrays coupled to a gold film.

We show that light-induced mechanical forces that act on atoms may be significantly enhanced and acquire novel physical character when the electromagnetic reservoir which mediates the atomic relaxation is colored (i.e., frequency dependent)

Daniel J. Gauthier

Papers

Comprehensive CFD modelling of solar fast pyrolysis of beech wood pellets

Phase-conjugate Fizeau interferometer.

An ionically based mapping model with memory for cardiac restitution

Enhancing four-wave-mixing processes by nanowire arrays coupled to a gold film.

Trapping and cooling of atoms in a vacuum perturbed in a frequency-dependent manner.