نتایج جستجو برای: apparent diffusion coeffi cient

تعداد نتایج: 279086  

2012
Volker J. Sorger Norberto D. Lanzillotti-Kimura Xiang Zhang

Electro-optic modulators have been identifi ed as the key drivers for optical communication and signal processing. With an ongoing miniaturization of photonic circuitries, an outstanding aim is to demonstrate an on-chip, ultra-compact, electro-optic modulator without sacrifi cing bandwidth and modulation strength. While silicon-based electro-optic modulators have been demonstrated, they require...

Journal: :dental research journal 0
ruchi banthia santosh gupta priyank banthia pallavi singh sapna raje navkiran kaur

background: gingival overgrowth is a common side-effect of amlodipine regimen on the oral cavity. there is controversy regarding the cause and effect relationship of periodontal health and drug induced gingival overgrowth. therefore, this study was conducted to investigate and to assess the relationship between the periodontal health and the onset and severity of gingival overgrowth in hyperten...

2008
Lehua Pan Jiming Jin Norman Miller Yu-Shu Wu Gudmundur Bodvarsson

325 Land hydrologic responses to meteorological forcing involve complicated exchanges of moisture and energy between soil, vegetation, snowpack, groundwater, and the overlying atmospheric boundary layer. These exchanges occur in the form of many interactive natural hydrologic processes, including precipitation, snow and soil water melting and freezing, infi ltration, storage and movement of soi...

Journal: :Annals of family medicine 2004
Stephen J Zyzanski Susan A Flocke L Miriam Dickinson

Studies in which data from multiple patients are collected per clinician or per practice are becoming common in primary care research, particularly with the increase of studies conducted in practicebased research networks. These studies generate data that are clustered. A special case of clustered data is an intervention study where clinicians or practices are randomized into an intervention or...

2013
Carlos Y Valenzuela

The Neutral Theory of Evolution (NTE) proposes mutation and random genetic drift as the most important evolutionary factors. The most conspicuous feature of evolution is the genomic stability during paleontological eras and lack of variation among taxa; 98% or more of nucleotide sites are monomorphic within a species. NTE explains this homology by random fi xation of neutral bases and negative ...

2013
L Araújo C Palmares M Beltrão AM Pereira J Fonseca A Moreira L Delgado

Background and objectives: Soluble components are increasingly analyzed in induced sputum supernatant. However, only a few studies have measured total or specifi c immunoglobulin (Ig) E in sputum and none have attempted to validate it. We aim to validate laboratory measurements of total and specifi c IgE in induced sputum supernatant and to evaluate the infl uence of sputum processing with dith...

1999
Peter H. Nelson Scott M. Auerbach

Diffusion in anisotropic host±guest systems exhibiting a Langmuir-type adsorption isotherm is investigated using a tracer counterpermeation (TCP) simulation technique. In the TCP simulations, tagged and untagged molecules counter-diffuse through zeolite membranes of ®nite thickness. Fick's law is used to measure the diffusivities at high equilibrium occupancy, as a function of the membrane thic...

Journal: :Magnetic resonance in medicine 2012
Noam Shemesh Daniel Barazany Ofer Sadan Leah Bar Yuval Zur Yael Barhum Nir Sochen Daniel Offen Yaniv Assaf Yoram Cohen

Conventional diffusion MRI methods are mostly capable of portraying microarchitectural elements such as fiber orientation in white matter from detection of diffusion anisotropy, which arises from the coherent organization of anisotropic compartments. Double-pulsed-field-gradient MR methods provide a means for obtaining microstructural information such as compartment shape and microscopic anisot...

2013
B. M. Jacobs B. J. Kerr

Covariance analysis limits error, the degree of nuisance variation, and overparameterizing factors to accurately measure treatment effects. Data dealing with growth, carcass composition, and genetics often use covariates in data analysis. In contrast, nutritional studies typically do not. The objectives of this study were to 1) determine the effect of feeding diets containing dehulled, degermed...

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