نتایج جستجو برای: isoelectric point
تعداد نتایج: 527507 فیلتر نتایج به سال:
N-Acylsulfonamide safety-catch linkers are versatile tools in solid-phase organic synthesis because of their stability. This stability necessitates linker activation prior to compound cleavage. Here, we demonstrate that the N-acylsulfonamide group can react with a pi-allyl palladium complex and that these mild and neutral conditions can be exploited for linker activation. The advantages of this...
The connection of a superconductor to a chaotic ballistic quantum dot leads to interesting phenomena, most notably the appearance of a hard gap in its excitation spectrum. Here we treat such an Andreev billiard semiclassically where the density of states is expressed in terms of the classical trajectories of electrons (and holes) that leave and return to the superconductor. We show how classica...
The correspondence between the exact embedding potential and the pair of the electron densities--that of the embedded molecule and that of its environment [Wesolowski and Warshel, J. Phys. Chem. 1993, 97, 8050]--is used to generate the average embedding potential and to subsequently calculate the solvatochromic shifts in a number of organic chromophores in solvents of various polarities. The av...
Mitsuyoshi Hashimoto2,3, Shuhua Tan3, Naoyoshi Mori2, Helen Cheng3, and Pi-Wan Cheng1,3,4 2Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan; 3Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center and 4Eppley Cancer Center for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, ...
We present theoretical results for the equilibrium Josephson current through an Anderson dot tuned into the magnetic regime, using Hirsch-Fye Monte Carlo simulations covering the complete crossover from Kondo-dominated physics to pi junction behavior in a numerically exact way. Within the "magnetic" regime, U/Gamma >> 1 and epsilon0/Gamma < or = 1, the Josephson current is found to depend only ...
An updated two-dimensional electrophoretic map of human plasma proteins is presented, together with a complete listing of the individual protein spots, their locations, size and isoelectric points relative to internal charge standards. Forty-nine polypeptide species are identified, many consisting of multiple spots differing in glycosylation or sequence (e.g., immunoglobulins). A further series...
The distribution of valence electrons in metals usually follows the symmetry of the underlying ionic lattice. Modulations of this distribution often occur when those electrons are not stable with respect to a new electronic order, such as spin or charge density waves. Electron density waves have been observed in many families of superconductors, and are often considered to be essential for supe...
a Unidad de Hepatología, Hospital Clinic, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigación en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, España b Unitat de Suport a la Recerca (USR) Metropolitana Nord, Institut d’Investigació en Atenció Primaria (IDIAP) Jordi Gol, Centro de Investigación en Red de Enfermedades Hepáticas y Digesti...
We present the first study of the vector (Wess-Zumino) current in tau(-)-->K-pi-K+nu(tau) decay using data collected with the CLEO III detector at the Cornell Electron Storage Ring. We determine the quantitative contributions to the decay width from the vector and axial vector currents. Within the framework of a model by Kühn and Mirkes, we identify the quantitative contributions to the total d...
NMR spin echo measurements of 13C in C60, 89Y in Y2O3, and 29Si in silicon are shown to defy conventional expectations when more than one pi pulse is used. Multiple pi-pulse echo trains may either freeze out or accelerate the decay of the signal, depending on the pi-pulse phase. Average Hamiltonian theory, combined with exact quantum calculations, reveals an intrinsic cause for these coherent p...
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