نتایج جستجو برای: concentration ratio

تعداد نتایج: 849884  

2008
J. M. ALDAZ

This paper is motivated by the article [GluMi] by E. Gluskin and V. Milman, who considered the variant ∏n i=1 |yi| ≤ √ n−1 ∑n i=1 y 2 i of the AM-GM inequality in the equal weights case. Roughly speaking, they showed that the ratio ∏n i=1 |yi|/ √ n−1 ∑n i=1 y 2 i is bounded below by 0.394 asymptotically in n and with high probability, where probability refers to Haar measure on the euclidean un...

Journal: :Journal of environmental radioactivity 2013
M D Wood N A Beresford B J Howard D Copplestone

Concentration ratios (CR(wo-media)) are used in most radioecological models to predict whole-body radionuclide activity concentrations in wildlife from those in environmental media. This simplistic approach amalgamates the various factors influencing transfer within a single generic value and, as a result, comparisons of model predictions with site-specific measurements can vary by orders of ma...

Journal: :Journal of analytical toxicology 2009
Gudrun Høiseth Luca Morini Aldo Polettini Asbjørg S Christophersen Lene Johnsen Ritva Karinen Jørg Mørland

Serum/blood (S/B) concentration ratios for ethyl glucuronide (EtG) and ethyl sulfate (EtS) are missing from the literature, and the aim of this study was to determine these ratios in samples from patients at admission to an alcohol rehabilitation clinic. Two blood samples were collected simultaneously, and EtG and EtS were analyzed in whole blood and serum, respectively, using a liquid chromato...

Journal: :تحقیقات اقتصادی 0
اسمعیل ابونوری استاد اقتصادسنجی و آمار اجتماعی، گروه اقتصاد، دانشگاه سمنان نجمه غلامی مدرس دانشگاه آزاد اسلامی واحد خمین

one of the most important dimention of the industrial structure is the concentration. in order to determine concentration in iranian industries from 2000 to 2005, the 5-firm concentration ratio is used in terms of sale value, production, value added and employment variables. the results indicate high correlation among concentration ratios in terms of sale, employment, value added and production...

Journal: : 2022

The study investigates the effect of polycaprolactone (PCL) concentration on metformin hydrochloride (MH) release ratio electrospun nanofiber scaffolds. Blend and emulsion electrospinning are used to produce performance nanofibrous scaffolds was evaluated by morphology (Field Emission Scanning Electron Microscopy, FESEM), chemical (Fourier Transform Infrared Spectroscopy, FTIR), thermal (Differ...

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