On precise determination of structural and dynamic characteristics of the hydrogen selenide molecule from experimental data

2007 ◽  
Vol 50 (9) ◽  
pp. 745-753
Author(s):  
E. A. Sinitsyn ◽  
E. S. Bekhtereva ◽  
A. S. Bulavenkova ◽  
O. N. Ulenikov
Keyword(s):  
Experimental Data ◽  
Dynamic Characteristics ◽  
Precise Determination ◽  
Hydrogen Selenide

scholarly journals Scalar and tensor ππ resonances in dispersive analysis

2015 ◽  
Vol 39 ◽  
pp. 1560087 ◽  
Author(s):  
Robert Kamiński
Keyword(s):  
Experimental Data ◽  
Mathematical Proof ◽  
Precise Determination ◽  
Dispersion Relations ◽  
Interaction Parameters ◽  
Symmetry Condition ◽  
Crossing Symmetry ◽  
Text Interaction

Role of the dispersive method in analysis of the [Formula: see text] amplitudes in all important partial waves: [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] is presented. Widely discussed is the role of new (GKPY) and old (Roy) dispersion relations with imposed crossing symmetry condition. Example of a successful application of the GKPY and Roy’s equations in test of [Formula: see text] amplitudes fitted to both experimental data and dispersion relations is presented. Short and purely mathematical proof of the uniqueness and correctness of the dispersive method used to precise determination of [Formula: see text] interaction parameters is presented.

scholarly journals NLO QCD ANALYSIS OF POLARIZED DEEP INELASTIC SCATTERING

1998 ◽  
Vol 13 (32) ◽  
pp. 5573-5592 ◽  
Author(s):  
ELLIOT LEADER ◽  
ALEKSANDER V. SIDOROV ◽  
DIMITER B. STAMENOV
Keyword(s):  
Experimental Data ◽  
Inelastic Scattering ◽  
Smooth Function ◽  
Gluon Density ◽  
Precise Determination ◽  
Leading Order ◽  
Counting Rules ◽  
Qcd Analysis ◽  
Polarized Deep Inelastic Scattering

We have carried out a next-to-leading order QCD analysis of the experimental data on polarized DIS in the [Formula: see text] scheme. We have studied two models of the parametrizations of the input parton densities — the first due to Brodsky, Burkhardt and Schmidt (BBS), which gives a simultaneous parametrization for the polarized and unpolarized densities and in which the counting rules are strictly imposed; in the second, the input polarized densities are written in terms of the unpolarized ones in the generic form Δq(x)=f(x)q(x), with f(x) some simple smooth function. In both cases a good fit to the polarized data is achieved. As expected, the polarized data do not allow a precise determination of the polarized gluon density. Concerning the polarized sea quark densities, these are fairly well determined in the BBS model because of the interplay of polarized and unpolarized data, whereas in the second model, where only the polarized data are relevant, the polarized sea quark densities are largely undetermined.

Precise Determination of Band Gap Naturally via Absorption/Reflectance/Transmission Spectra

2014 ◽  
Vol 509 ◽  
pp. 3-8 ◽  
Author(s):  
Ya Jie Liu ◽  
Ning Zhu
Keyword(s):  
Experimental Data ◽  
Band Gap ◽  
Material Property ◽  
Calculated Data ◽  
Precise Determination ◽  
Transmission Spectra ◽  
Spectroscopy Data ◽  
Reflection And Transmission ◽  
Experimental Spectroscopy

A set of nonlinear equations about the band gap and the indexnof material property with the absorptance, reflectance and transmittance were produced based on Tauc relation. Optimizing fitting the experimental spectroscopy data, such as absorption, reflection and transmission, the band gapand the indexnrelated to the material property could be obtained accurately and reliably. Meanwhile, the experimental data were used as more as possible, and the artificial errors at pre-determining the indexnwere avoided. The lowest correlation coefficient and the largest average relative error between the experimental and the calculated data are 0.9588 and 2.7% in all considered cases respectively. The best results show the band gap obtained from this method is more accurate, easier and faster than traditional extrapolation. Hence, this work would promote the precision and reliability for predicting the band gap and index of materials naturally.

PRECISE DETERMINATION OF THE IRRATIONAL PRE-FERRED INTERFACE ORIENTATION BY TEM

2010 ◽  
Vol 46 (4) ◽  
pp. 411-417 ◽  
Author(s):  
Yang MENG ◽  
Lin GU ◽  
Wenzheng ZHANG
Keyword(s):  
Precise Determination ◽  
Interface Orientation

Nauwkeurige methode voor de aanwasbepaling van het grondvlak met behulp van de Pressler-boor

1968 ◽  
Vol 12 ◽  
Author(s):  
R. Goossens
Keyword(s):  
Basal Area ◽  
Precise Determination ◽  
Maximum Diameter ◽  
Precise Method ◽  
Maximum Radius ◽  
The Core ◽  
Two Parameters

A precise method for the determination of the increment of the  basal area using the PressIer bore. Refering to  previous research showing that the basal area of the corsica pine could be  characterized by an ellips, we present in this paper a precise method for the  determination of the increment of the basal area. In this method we determine  the direction of the maximum diameter, we measure this diameter and we take a  core in one of the points of tangency of the caliper with the measured tree.  The determination of the diameter perpendicular to the maximum diameter  finishes the work wich is to be done in the forest. From the classical  measurements effectuated on the core and from the measured diameters we can  then determine the form (V) and the excentricity (e). Substituting these two  parameters in the formula 2 or 2', we can also calculate the error of a  radius measured on the core with respect to the representative radius, This  error with them allow us to correct the measured value of the minimum or the  maximum radius and we will be able to do a precise determination of the  increment.

Equilibrium Sorptions in Heterogeneous Ion Exchange Membranes

1992 ◽  
Vol 57 (9) ◽  
pp. 1905-1914
Author(s):  
Miroslav Bleha ◽  
Věra Šumberová
Keyword(s):  
Experimental Data ◽  
Ion Exchange ◽  
Total Content ◽  
Distribution Coefficients ◽  
Exchange Capacity ◽  
Ion Exchange Membranes ◽  
Ion Exchange Capacity ◽  
Equilibrium Sorption ◽  
Inhomogeneity Factor

The equilibrium sorption of uni-univalent electrolytes (NaCl, KCl) in heterogeneous cation exchange membranes with various contents of the ion exchange component and in ion exchange membranes Ralex was investigated. Using experimental data which express the concentration dependence of equilibrium sorption, validity of the Donnan relation for the systems under investigation was tested and values of the Glueckauf inhomogeneity factor for Ralex membranes were determined. Determination of the equilibrium sorption allows the effect of the total content of internal water and of the ion-exchange capacity on the distribution coefficients of the electrolyte to be determined.

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