نتایج جستجو برای: cos2

تعداد نتایج: 213  

1999
M. Woods

We present an overview of the electroweak physics program of the SLD experiment at the Stanford Linear Accelerator Center (SLAG). A data sample of 550K 2’ decays has been collected. This experiment utilizes a highly polarized electron beam, a small interaction volume, and a very precise pixel vertex detector. It is the first experiment at a linear electron collider. We present a preliminary res...

2006
A. Mitov S. Moch A. Vogt

We have investigated the next-to-next-to-leading order (NNLO) corrections to inclusive hadron production in e+e− annihilation and the related parton fragmentation distributions, the ‘time-like’ counterparts of the ‘space-like’ deep-inelastic structure functions and parton densities. We have re-derived the corresponding second-order coefficient functions in massless perturbative QCD, which so fa...

1991
Jorge L. Sarmiento James C. Orr

Surface nutrient concentrations in the Southern Ocean are an important indicator of the atmosphere-ocean chemical balance that played a key role in ice-age reduction of atmospheric pC0, and would play a role in any Fe fertilization scenario for increasing oceanic uptake of anthropogenic CO,. The response of the ocean and atmosphere to a scenario of extreme depletion of Southern Ocean surface nu...

2001
John Lee

The experimental and analytical protocols required far obtaining rotational correlation times of biological macromolecules from fluorescence anisotropy decay measurements are described. As an example, the lumazine protein from Photobacterium leiognathi was used. This stable protein ( M , 21 200) contains the noncovalently bound, natural fluorescent marker 6,7-dimethyl-8-ribityllumazine, which h...

2016
C. Nelson C. A. Nelson

Powerful results are tabulated which can be used at modern colliders to make fundamental symmetry tests by analysis of sequential decays of X + V1V2. By generalization of the ty$ parity test which has recently been used to determine the parity of the r|c, the P (or CP) quantum number can always be determined for X of any spin J which decays P (or respectively CP) invariantly into VV or VV where...

1997
Nico Tjandra Attila Szabo

Cross-correlation between 15N-1H dipolar interactions and 15N chemical shift anisotropy (CSA) gives rise to different relaxation rates of the doublet components of 15N-{1H} peptide backbone amides. A simple scheme for quantitative measurement of this effect is described which yields information on the magnitude of the CSA from the relative intensities of 1H-15N correlations obtained with two sl...

2017
Juana Vivó Acrivos N. H Handly

Proton nuclear magnetic resonance was used to probe the environment of the intercalant molecule in low dimensional (aeolotropic) solids 3RI-TaSz(NHJhJ and 3Ru-TaS2(N2H4)4/3. and, specifically to look for phase transitions associated with changes in superlattice geometry. The proton resonance frequency for the intercalated molecules in the temperature interval 200 to 300 K indicates that there a...

1984
David J. Rossi Alan S. Willsky

zero), and a single object (N=1) is situated at a known objThe problem of detecting, locating and charaprojectioerizing location; see [1-3] for a discussion of ML localization of objects in a 2D cross-section from noisy projection data an object from noisy projection measurements. has been considered recently [1-3], in which objects are characterized by a finite number of parameters, which In t...

2007
Sujit Kumar Ghosh Debapriya Sengupta Sujit K. Ghosh

Knowing whether the dispersion structures of two elliptically symmetric populations are proportional is an important problem in multivariate data analysis. Since the problem is invariant under nonsingular transformations it is possible to reduce it to the situation where one population is spherically symmetric while the other has a diagonal dispersion structure. In this article we show that the...

2014
Lauren Lazarus

Analytical and numerical methods are applied to a pair of coupled nonidentical phase-only oscillators, where each is driven by the same independent third oscillator. The presence of numerous bifurcation curves defines parameter regions with 2, 4, or 6 solutions corresponding to phase locking. In all cases, only one solution is stable. Elsewhere, phase locking to the driver does not occur, but t...

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