نتایج جستجو برای: steppic rangelands of ardebil over nine years 1999
تعداد نتایج: 21240741 فیلتر نتایج به سال:
We examined changes in rangeland health in the semi-arid woodlands of eastern Australia at fixed sites between 1989 and 1999. Over the 11-year period there were significant declines in the quality of the vegetation, and changes in plant species were driven largely by seasonality, and to a lesser extent, amount of rainfall. Three indices of rangelands health (composition, function and stability)...
in this article, we have focused one some basic and productive information about the properties of spectrum and singular values related to compact operators which are ideals in a c*-algebra of bounded operators. considering a two-sided connection between the family of symmetric gauge functions on sequence of singular values of compact operators and symmetric norms on finite dimensional ope...
abstract listening is a key and main tool in second language skill and its development is of prime concern to teachers and learners. furthermore, the application of technology in language classrooms has become more commonplace in the last fifty years. computer and the internet have made foreign language materials easy to access and use. so, the present study is an attempt to examine the effec...
Rangelands cover approximately 85% of Kenya’s land mass and is a major resource for livestock farming with a considerable potential to mitigate climate change, yet these lands are stressed differently by various management. Our study aimed at determining the influence of grazing management systems (rotational, continuous and ungrazed) on soil organic carbon stocks in Yoani ranch located in the ...
Timely monitoring of plant biomass is critical for the management of forage resources in Sahelian rangelands. The estimation of annual biomass production in the Sahel is based on a simple relationship between satellite annual Normalized Difference Vegetation Index (NDVI) and in situ biomass data. This study proposes a new methodology using multi-linear models between phenological metrics from t...
Diabetes mellitus (DM) is a major public health problem. Objective of current study was to know the demography, clinical characteristics and etiology of youth Diabetes mellitus (DM) in Kashmir, North India. METHODS: A prospective hospital based study, carried out in the Department of Endocrinology, SKIMS Srinagar, Kashmir India over the period from 2008 July - September 2010. Setting: A teachin...
Abstract Physical, financial, and emotional burdens are profound affect the quality-of-life of persons with dementia (PWD) their caregivers, particularly as cognitive decline accelerates death approaches, which leads to burdensome, non-beneficial transitions in care that can lead further PWD. Measures for PWD caregivers include important physical, psychological/cognitive, existential, caregivin...
this research has been taken among the students of high school in karaj city during the years 1391 and 1392. this is a survey research and data gathering is through questionnaires. studying the “an analysis of students’ tendency toward non-native reference groups in karaj”. the questionnaire was distributed among 260 of these students who were chosen through multi step cluster sampling. conside...
fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...
INTRODUCTION Foreign bodies after surgical procedures are not very reported in the literature. It is estimated to have 1 case for 1,300 operations, although in practice the frequency might probably be higher. CASE REPORT A woman, 38 years, submitted to left nephroureterectomy for renal transplantation in 1993. During 9 years, she was asymptomatic, and then she presented intermittent left flan...
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