نتایج جستجو برای: annual ratio evapotranspiration and bio

تعداد نتایج: 16879877  

2008
S. Hanisch P. Krause

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract The impact of predicted climate change on the hydrolog...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 0

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

2011
Roger C. Bales Peter C. Hartsough Peter Kirchner Carolyn T. Hunsaker Dylan Beaudette

Using data from a water-balance instrument cluster with spatially distributed sensors we determined the magnitude and within-catchment variability of components of the catchmentscale water balance, focusing on the relationship of seasonal evapotranspiration to changes in snowpack and soil moisture storage. Co-located, continuous snow depth and soil moisture measurements were deployed in a rain–...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده مرتع و آبخیزداری و شیلات و محیط زیست 1391

مراتع حدود نیمی از خشکی های جهان را در بر دارند و پوشش گیاهی آن در نتیجه تأثیر متقابل محیط و موجودات زنده به وجود آمده است و به عنوان یک اکوسیستم طبیعی مدیریت می شوند. علاوه بر مراتع، راه ها در عصر حاضر نیز از اجزا مهم و زیرساخت های اصلی زندگی نوین و توسعه کشورها به شمار می روند. جاده ها ساخته دست بشر هستند و جوامع گیاهی کنار جاده تحت تأثیر ساخت و ساز قرار دارند. پوشش "رودرال" به مجموعه ای از پ...

2013
Miguel A. Campo-Bescós Rafael Muñoz-Carpena David A. Kaplan Jane Southworth Likai Zhu Peter R. Waylen

BACKGROUND Understanding the drivers of large-scale vegetation change is critical to managing landscapes and key to predicting how projected climate and land use changes will affect regional vegetation patterns. This study aimed to improve our understanding of the role, magnitude and spatial distribution of the key environmental factors driving vegetation change in southern African savanna, and...

2011
Youngryel Ryu Dennis D. Baldocchi Hideki Kobayashi Catharine van Ingen Jie Li T. Andy Black Jason Beringer Eva van Gorsel Alexander Knohl Beverly E. Law Olivier Roupsard

[1] We propose the Breathing Earth System Simulator (BESS), an upscaling approach to quantify global gross primary productivity and evapotranspiration using MODIS with a spatial resolution of 1–5 km and a temporal resolution of 8 days. This effort is novel because it is the first system that harmonizes and utilizes MODIS Atmosphere and Land products on the same projection and spatial resolution...

2015
Maud Mouchet Christian Levers Laure Zupan Tobias Kuemmerle Christoph Plutzar Karlheinz Erb Sandra Lavorel Wilfried Thuiller Helmut Haberl Ricardo Bomfim Machado

We compared the effectiveness of environmental variables, and in particular of land-use indicators, to explain species richness patterns across taxonomic groups and biogeographical scales (i.e. overall pan-Europe and ecoregions within pan-Europe). Using boosted regression trees that handle non-linear relationships, we compared the relative influence (as a measure of effectiveness) of environmen...

علایی , عبدالرسول, میابی , زینت,

Testicular microlithiasis (TM) is an uncommon condition with reported prevalence of 0.6% in patients referred for scrotal ultrasound. Testicular microlithiasis was first reported by Priebe and Garret in 1970 and defined as multiple tiny calcification throughout the testis. The condition appears as characterstic small nonshadowing hyperechoic stippling foci in testicular parenchyma. Several as...

Journal: :Land 2023

This study was focused on a key aspect of drought monitoring that has not been systematically studied in the literature: evaluation capacity evapotranspiration data retrieved using geostationary meteorological satellites for use as water stress precursor. The work methodologically based comparisons between constructed indexes vegetation (evapotranspiration index (ETDI) and evaporative ratio (ES...

The purpose of the present study was to formulate and evaluate donepezil loaded bio-nanoparticles for effective treatment of Alzheimer’s disease. For the preparation of bio-nanoparticles biomaterial was isolated from fruits of Carica papaya by an economic method. The biomaterial recovered from the concentrate was subjected for various physicochemical properties like color, solubility, ...

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