نتایج جستجو برای: 12954 ngg

تعداد نتایج: 116  

2017
Nicole C. Deziel Laura E. Beane Freeman Barry I. Graubard Rena R. Jones Jane A. Hoppin Kent Thomas Cynthia J. Hines Aaron Blair Dale P. Sandler Honglei Chen Jay H. Lubin Gabriella Andreotti Michael C. R. Alavanja Melissa C. Friesen

BACKGROUND Increased pesticide concentrations in house dust in agricultural areas have been attributed to several exposure pathways, including agricultural drift, para-occupational, and residential use. OBJECTIVE To guide future exposure assessment efforts, we quantified relative contributions of these pathways using meta-regression models of published data on dust pesticide concentrations. ...

2011
Zhijun Yao Junmei Tang F Benjamin Zhan

BACKGROUND Kulldorff's spatial scan statistic has been one of the most widely used statistical methods for automatic detection of clusters in spatial data. One limitation of this method lies in the fact that it has to rely on scan windows with predefined shapes in the search process, and therefore it cannot detect cluster with arbitrary shapes. We employ a new neighbor-expanding approach and in...

2016
Ge Dong Mingxiong He Hong Feng

CRISPR-Cas (clustered regularly interspaced short palindromic repeats—CRISPR associated proteins) is a RNA-guided defense immune system that prevents some genetic elements such as plasmids and virus from getting into the bacterial cells. Zymomonas mobilis is an ethanologenic bacterium, which encodes a subtype I-F CRISPR-Cas system containing three CRISPR loci and a far distant cas gene cluster....

Journal: :Journal of chromatography. A 2010
Aurore Boscher Cédric Guignard Terence Pellet Lucien Hoffmann Torsten Bohn

A simple multi-residue method was developed for detecting and quantifying 33 analytes from 13 classes of antibiotics (tetracyclines (3), quinolones (7), penicillins (3), ionophore coccidiostats (7), macrolides (3), sulfonamides (1), quinoxalines (2), phenicols (2), lincosamides (1), diaminopyrimidines (1), polypeptides (1), streptogramins (1) and pleuromutilins (1)) in animal feeds. Extraction ...

2015
Ludmila Malakhova Vitaly Giragosov Antonina Khanaychenko Tetiana Malakhova Viktor Egorov Dmitry Smirnov

The organochlorine compounds (OCs) contamination was studied in different tissues of the adult Black Sea turbot (BST) from natural spawning populations of 2008, 2009 and 2013 in the South-Western shelf off Crimea, the Black Sea. Total lipids, six congeners of polychlorinated biphenyl (CB 28, 52, 101, 138, 153, 180) and organochlorine pesticide p,p’DDT including its metabolites p,p’DDE and p,p’D...

2005
Keith G Jeffery

Linking CRISs (Current Research Information Systems) and OA (Open Access) Systems brings together systems for managing R&D with systems for providing open access to scholarly publishing – the major visible output of R&D – on the emerging European GRIDs infrastructure. The debate over OA is very active with ‘green’ (institutional repository selfarchiving) and ‘gold’ (author / institution pays pu...

Journal: :Chemical communications 2006
Margaret A Brimble Christina J Bryant

The first synthesis of the spiroacetal-containing anti-Helicobacter pylori agents ent-CJ-12,954 and ent-CJ-13,014 is reported based on the union of a heterocycle-activated spiroacetal-containing sulfone fragment with a phthalide-containing aldehyde fragment; comparison of the 1H and 13C NMR data, optical rotations and HPLC retention times of the synthetic compounds (3S,2"S,5"S,7"S)-(1a) and (3S...

2014
Jafar HASANZADEH Mehdi MORADINAZAR Farid NAJAFI Touraj AHMADI-JOUYBARY

BACKGROUND The aim of this study was to investigate the trends in mortality from road traffic accidents (RTA) in Fars Province, southern Iran. METHODS The Age and sex-standardized mortality rate attributed to RTA from 2004 to 2010 in Fars Province was calculated using world standard population. We also used linear regression and chi-squared tests. RESULTS Over the period of study (7 years),...

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