نتایج جستجو برای: response curve

تعداد نتایج: 1091866  

Journal: :Journal of toxicology and environmental health. Part B, Critical reviews 2010
Andrea Chambers Daniel Krewski Nicholas Birkett Laura Plunkett Richard Hertzberg Ruth Danzeisen Peter J Aggett Thomas B Starr Scott Baker Michael Dourson Paul Jones Carl L Keen Bette Meek Rita Schoeny Wout Slob

There is a need to define exposure-response curves for both Cu excess and deficiency to assist in determining the acceptable range of oral intake. A comprehensive database has been developed where different health outcomes from elevated and deficient Cu intakes were assigned ordinal severity scores to create common measures of response. A generalized linear model for ordinal data was used to es...

Journal: :مرتع و آبخیزداری 0
حمید رضا مرادی دانشیار دانشکدة منابع طبیعی دانشگاه تربیت مدرس هانیه اسدی کارشناس ارشد دانشکدة منابع طبیعی دانشگاه تربیت مدرس سید حمید رضا صادقی استاد دانشکدة منابع طبیعی دانشگاه تربیت مدرس عبدالرسول تلوری دانشیار پژوهشی مرکز تحقیقات حفاظت خاک و آبخیزداری e

the hydrograph at watershed outlet can be expressed as hydrological response of watershed to geomorphological behavior. in present study with the aid of the gis and the concept of instantaneous unit hydrograph, the watershed response was simulated. in present physical method, the iuh is derived from three parameters of time of concentration, storage coefficient and time-area curve of the basin....

Journal: :iranian journal of science and technology (sciences) 2008
m. kazaz

v. dannon showed that spherical curves in e4 can be given by frenet-like equations, and he thengave an integral characterization for spherical curves in e4 . in this paper, lorentzian spherical timelike andspacelike curves in the space time 41 r are shown to be given by frenet-like equations of timelike andspacelike curves in the euclidean space e3 and the minkowski 3-space 31 r . thus, finding...

2009
Bahman Shafii William J. Price

Estimation of unknown pesticide levels in experimental samples is an important aspect of many agricultural and environmental studies. Such measurements are often made utilizing a “standard” dose response curve. This methodology compares the biological response of a target organism at known dosages to the response of the same organism exposed to an unknown sample. These “bioassays” are typically...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده ادبیات 1389

the present study reports an analysis of response articles in four different disciplines in the social sciences, i.e., linguistics, english for specific purposes (esp), accounting, and psychology. the study has three phases: micro analysis, macro analysis, and e-mail interview. the results of the micro analysis indicate that a three-level linguistic pattern is used by the writers in order to cr...

Journal: :JCO Global Oncology 2020

Journal: :Environmental Health Perspectives 1994
D G Hoel C J Portier

Carcinogenesis data for 315 chemicals were obtained from the National Cancer Institute-National Toxicology Program (NCI-NTP) bioassay programs and were analyzed to examine the shape of carcinogenesis dose-response curves. Tumor site data were more often consistent with a quadratic response than with a linear response, suggesting that the routine use of linear dose-response models will often ove...

Journal: :Journal of physics 2022

Abstract A high-quality earphone with multiple sound-generating units and frequency-dividing circuits, a core of consisting balanced armature units, aided by analog circuits an shell made light-cured resin, is designed. The whole project physical production realized. analysis results the frequency response curve, which are obtained help tester, show that headphones in sensitivity, curve stabili...

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