نتایج جستجو برای: cation distribution

تعداد نتایج: 661166  

Journal: :Energy & environmental materials 2023

Controlling Li ion transport in glasses at atomic and molecular levels is key to realizing all-solid-state batteries, a promising technology for electric vehicles. In this context, Li3PS4 glass, solid electrolyte candidate, exhibits dynamic coupling between the Li+ cation mobility PS43− anion libration, which commonly referred as paddlewheel effect. addition, it concerted diffusion effect (i.e....

1999
YONGMIAO HONG

The m-testing approach provides a general and convenient framework in which to view and construct speci cation tests for econometric models. Previous m-testing frameworks only consider test statistics that involve nite dimensional parameter estimators and in nite dimensional parameter estimators a ecting the limit distribution of the m-test statistics. In this paper we propose a new m-testing f...

1998
Tomoko Matsui Kiyoaki Aikawa

This paper investigates a new method for creating speaker models robust against utterance variation in continuous distribution hidden-Markov-model-based speaker veri cation. In this method, the distribution of the sessionindependent features for each speaker is estimated by separately modeling the session-to-session utterance variation as two distinct variations: one session-dependent and the o...

Journal: :international journal of environmental research 2010
b. mahmoudi f. bakhtiari m. hamidifar a. daneh kar

karkhe watershed (kw) with more than 5 million hectares recently encountered many problems in the natural, social and man-made habitats. unsuitable use of land, soil erosion and lack of rainfall are the most destructive factors in this watershed affecting the whole region fundamentally. as expected, these problems have caused a considerable fall in biodiversity in fauna and flora, a decrease in...

2007

A general model is presented to enable the calculation of the cation distribution and thermodynamic properties of any binary solid solution between oxide spinels containing 2*, 3* and 4* cations. The model includes the effect ofdisordering enthalpy which depends linearly on the degree of disorder. In addition there are important contributions to the thermodynamic properties from the size mismat...

2006
S. J. TRAINA H. E. DONER

-The sorption properties of Co, Cu, Ni, and Ca were studied in a mixed mineral suspension of synthetic MnO2 and Wyoming montmofillonite. The distribution of the sorbed cations between the two solid phases was measured by indirect chemical fractionation with acidified NH2OH-HC1 and by direct X-ray spectroscopic analysis of mineral particles using electron microscopy. Electron microscope and NH2O...

2009
Yingying Dong Arthur Lewbel

Suppose V and U are two independent mean zero random variables, where V has an asymmetric distribution with two mass points and U has some zero odd moments (having a symmetric distribution su¢ ces). We show that the distributions of V and U are nonparametrically identi…ed just from observing the sum V + U , and provide a rate root n estimator. This can permit point identi…cation of average trea...

2001
Andreas Kappler Rong Ji Bernhard Schink Andreas Brune

Organic matter from profundal lake sediments was fractionated and analyzed with high depth resolution, and the size-class distribution of humic substances was determined by gel-permeation chromatography. Together with a depthdependent increase of the thermal stability of the organic matter and an increasing C/N atomic ratio of the humic acids, the size-distribution patterns of di€erent fraction...

Some new compounds based on bis-benzimidazole moieties have been synthesized and characterized by IR and NMR spectroscopies. The ability of 3a in transition metal cation sensing such as Co2+, Ni2+, Zn2+, Mn2+, Fe2+ and Cu2+ have been investigated by Uv-vis and fluorescence spectroscopy in methanol solvent. The complexation constants and complex stoichiometry of Cu2+ have been determined. The ex...

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