نتایج جستجو برای: دستگاه‌های GCو GC/MS

تعداد نتایج: 2946  

2014
Vimal Mishra Devashish Kumar Auroop R. Ganguly J. Sanjay Milind Mujumdar R. Krishnan Reepal D. Shah

Extreme precipitation events over India have resulted in loss of human lives and damaged infrastructures, food crops, and lifelines. The inability of climate models to credibly project precipitation extremes in India has not been helpful to longer-term hazards resilience policy. However, there have been claims that finer-resolution and regional climate models may improve projections. The claims...

ژورنال: :تحقیقات گیاهان دارویی و معطر ایران 2007
مهدی میرزا زهرا باهر نیک

از آنجایی که گیاه salvia از روزگاران کهن در مجموعه گیاهان طبی مورد توجه خاص بوده و کاربرد امروزه اسانس گونه های مختلف آن در صنایع داروسازی، عطرسازی و فراورده های بهداشتی- آرایشی و نیز طعم دهنده در صنایع غذایی و نوشیدنی حائز اهمیت است, بنابراین در تحقیق حاضر اسانس گونه ای از جنس سالویا با نام  salvia compressa vent. استخراج و ترکیبهای موجود در آن مورد بررسی و شناسایی قرار گرفت. بدین منظور سر شاخ...

2015
Sara Varela Matheus S. Lima-Ribeiro Levi Carina Terribile Hugo Rebelo

Ecological niche models are widely used for mapping the distribution of species during the last glacial maximum (LGM). Although the selection of the variables and General Circulation Models (GCMs) used for constructing those maps determine the model predictions, we still lack a discussion about which variables and which GCM should be included in the analysis and why. Here, we analyzed the clima...

زهرا باهر نیک مهدی میرزا,

از آنجایی که گیاه Salvia از روزگاران کهن در مجموعه گیاهان طبی مورد توجه خاص بوده و کاربرد امروزه اسانس گونه های مختلف آن در صنایع داروسازی، عطرسازی و فراورده‌های بهداشتی- آرایشی و نیز طعم دهنده در صنایع غذایی و نوشیدنی حائز اهمیت است, بنابراین در تحقیق حاضر اسانس گونه ای از جنس سالویا با نام  Salvia compressa Vent. استخراج و ترکیبهای موجود در آن مورد بررسی و شناسایی قرار گرفت. بدین منظور سر شاخ...

2013
Goce Dimeski Breeann Silvester Jacobus Ungerer Leslie Johnson Jennifer H. Martin

BACKGROUND Overcrowding and prolonged length of stay in emergency departments (ED) are increasing problems in hospitals. Rapid availability of all laboratory results has an impact on clinical decision-making, admissions or discharge decisions and resource utilisation. Increasing number of our urinary drugs of abuse (DOA) screens had a turnaround time (TAT) of up to 33 days after the discharge o...

2006
M. Allmen W. P. Kegelmeyer

Three-dimensional (3-D) cloud characterization permits the derivation of important cloud geometry properties such as fractional cloudiness, mean cloud and clear length, aspect ratio, and the morphology of cloud cover. These properties are needed as input to the hierarchical diagnosis (HD) and instantaneous radiative transfer (IRF) models, to validate sub-models for cloud occurrence and formatio...

Journal: :Biology letters 2012
Daniel T Blumstein Yvonne Y Chi

The nonlinearity and arousal hypothesis predicts that highly aroused mammals will produce nonlinear, noisy vocalizations. We tested this prediction by measuring faecal glucocorticoid metabolites (GCMs) in adult yellow-bellied marmots (Marmota flaviventris), and asking if variation in GCMs was positively correlated with Wiener entropy-a measure of noise. Contrary to our prediction, we found a si...

2007
ANDREW J. CHARLTON LORENZO M. POLVANI JUDITH PERLWITZ FABRIZIO SASSI ELISA MANZINI KIYOTAKA SHIBATA STEVEN PAWSON J. ERIC NIELSEN DAVID RIND

The simulation of major midwinter stratospheric sudden warmings (SSWs) in six stratosphere-resolving general circulation models (GCMs) is examined. The GCMs are compared to a new climatology of SSWs, based on the dynamical characteristics of the events. First, the number, type, and temporal distribution of SSW events are evaluated. Most of the models show a lower frequency of SSW events than th...

2013
DAVID E. RUPP PHILIP W. MOTE NATHANIEL L. BINDOFF PETER A. STOTT DAVID A. ROBINSON

Significant declines in spring Northern Hemisphere (NH) snow cover extent (SCE) have been observed over the last five decades. As one step toward understanding the causes of this decline, an optimal fingerprinting technique is used to look for consistency in the temporal pattern of spring NH SCE between observations and simulations from 15 global climate models (GCMs) that form part of phase 5 ...

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