نتایج جستجو برای: exposure density

تعداد نتایج: 709271  

Journal: :Bioelectromagnetics 2012
Andreas Christ René Guldimann Barbara Bühlmann Marcel Zefferer Jurriaan F Bakker Gerard C van Rhoon Niels Kuster

We investigated whether domestic and professional induction cooktops comply with the basic restrictions defined by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). Based on magnetic field measurements, a generic numerical model of an induction cooktop was derived in order to model user exposure. The current density induced in the user was simulated for various models ...

2014
Catherine A. Smith Matthew R. Holahan Cheryl McCormick

Early developmental exposure to di(2-ethylhexyl) phthalate (DEHP) has been linked to a variety of neurodevelopmental changes, particularly in rodents. The primary goal of this work was to establish whether acute postnatal exposure to a low dose of DEHP would alter hippocampal dendritic morphology and BDNF and caspase-3 mRNA expression in male and female Long Evans rats. Treatment with DEHP in m...

Journal: :Industrial health 2010
Toshio Kawai Yoko Eitaki Hirohiko Ukai Osamu Inoue Yuki Maeshima Naohiro Ueda Fumiko Ohashi Haruhiko Sakurai Masayuki Ikeda

To investigate if it is appropriate to apply urine density correction when a urine sample is dense or dilute. Data on hippuric acid (HA-U), toluene (Tol-U), creatinine (CR) and specific gravity (SG) in end-of-shift urine samples and exposure to air-borne toluene were cited from previous publications. In practice, 837 cases were available, and they were classified into dense, intermediate and di...

Journal: :Environmental toxicology and chemistry 2004
Doris W T Au Ping Chen Carmel A Pollino

Juvenile areolated grouper (Epinephelus areolatus) were exposed to two levels of dietary benzo[a]pyrene (BaP; 0.25-12.5 microg/g body wt/d) for four weeks, followed by four weeks of depuration. Significant increase in hepatic ethoxyresorufin O-deethylase (EROD) activities was found after one week, preceding an increase in lipopigments (as measured by quantitative transmission electron microscop...

2009
Jing Ma Lawrence Lessner Judith Schreiber David O. Carpenter

Perchloroethylene (PERC) is commonly used as a dry cleaning solvent and is believed to be a human carcinogen, with occupational exposure resulting in elevated rates of kidney cancer. Living near a dry cleaning facility using PERC has been demonstrated to increase the risk of PERC exposure throughout the building where the dry cleaning is conducted, and in nearby buildings. We designed this stud...

Journal: :Integrated environmental assessment and management 2007
Ron A Heintz

The immediate and delayed effects of embryonic exposure to low levels of polynuclear aromatic hydrocarbons (PAHs) have been shown to reduce survival to maturity by 50% in exposed pink salmon populations. This suggests that chronically exposed populations could be extirpated over relatively few generations, but the effect of density dependence on extirpation rate is unknown. This study examines ...

Journal: :iranian journal of public health 0
b. rasaie a.keshavarz a.djazayeri

based on the date obtained through food consumption surveys conducted by the institute of nutrition and food technology research (during 1991-95), the dietary quality of seven provinces (eastern azerbaijan, isfahan, tehran, khorasan, khouzestan, sistan-baluchestan and fars) was assessed. using allowances figures for developing countries, single value nutrient density (s.v.n.a.) was designed for...

2015
Anke Geduhn Jens Jacob Detlef Schenke Barbara Keller Sven Kleinschmidt Alexandra Esther Pieter Spanoghe

Anticoagulant rodenticides (ARs) are commonly used to control rodent infestations for biocidal and plant protection purposes. This can lead to AR exposure of non-target small mammals and their predators, which is known from several regions of the world. However, drivers of exposure variation are usually not known. To identify environmental drivers of AR exposure in non-targets we analyzed 331 l...

2002
Z. X. Wu Donald A. Nordlund

Anaphes iole Girault is a solitary egg parasitoid which attacks Lygus spp. In a low-parasitoid-density experiment (parasitoid:host ratio 5 1:40) 10.0% of available Lygus hesperus Knight eggs were superparasitized by A. iole. However, in experiments with a high parasitoid density (parasitoid:host ratio 5 1:9), superparasitism of L. hesperus eggs was 33.3, 66.7, and 82.2% after exposure for 2, 6,...

Journal: :Circulation 2015
Ann Marie Navar-Boggan Eric D Peterson Ralph B D'Agostino Benjamin Neely Allan D Sniderman Michael J Pencina

BACKGROUND Many young adults with moderate hyperlipidemia do not meet statin treatment criteria under the new American Heart Association/American College of Cardiology cholesterol guidelines because they focus on 10-year cardiovascular risk. We evaluated the association between years of exposure to hypercholesterolemia in early adulthood and future coronary heart disease (CHD) risk. METHODS A...

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