نتایج جستجو برای: agricultural use

تعداد نتایج: 1824433  

2000
Peter H. Verburg Youqi Chen

Studies on land use change and food security in China have often neglected the regional variability of land use change and food production conditions. This study explores the various components of agricultural production in China in a spatially explicit way. Included are changes in agricultural area, multiple cropping index, input use, technical efficiency and technological change. Different re...

2013
Chiara Marchi Liselotte Wesley Andersen Volker Loeschcke

Several arthropods are known to be highly beneficial to agricultural production. Consequently it is of great relevance to study the importance of land management and land composition for the conservation of beneficial aphid-predator arthropod species in agricultural areas. Therefore our study focusing on the beneficial arthropod Bembidion lampros had two main purposes: I) identifying the physic...

2012
Jan Philipp Dietrich Christoph Schmitz Christoph Müller Marianela Fader Hermann Lotze-Campen Alexander Popp

Human activities such as research & development, infrastructure or management are of major importance for agricultural productivity. These activities can be summarized as agricultural land-use intensity. We present a measure, called the τ -factor, which is an alternative to current measures for agricultural landuse intensity. The τ -factor is the ratio between actual yield and a reference yield...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده برق و کامپیوتر 1390

one of the most important goals for increasing recognition and treatment revenue is transmitting vital data to medical care team, more quickly. nowadays, use of new technologies for transmitting data will deploy more and more daily. in this article, for transmitting electrocardiogram, first we code the signal into a suite of codes, then we will use bluetooth technology to transmit data from off...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده زبانهای خارجی 1389

the aim of the present study was to investigate the frequency and the type of discourse markers used in the argumentative and expository writings of iranian efl learners and the differences between these text features in the two essay genres. the study also aimed at examining the influence of the use of discourse markers on the participants’ writing quality. to this end the discourse markers us...

2011
Palaniappa Krishnan

Agricultural food production and consumption covers activities ranging from agriculture to food consumption. Pollution and food contamination related to the use of production technologies and processes, as well as from the use of products aimed at increasing agricultural yields and facilitating food conservation, have significant environmental consequences. There are a number of important issue...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2008
Jules Pretty

Concerns about sustainability in agricultural systems centre on the need to develop technologies and practices that do not have adverse effects on environmental goods and services, are accessible to and effective for farmers, and lead to improvements in food productivity. Despite great progress in agricultural productivity in the past half-century, with crop and livestock productivity strongly ...

2013
Kateryna Zhalnina Patricia D. de Quadros Kelsey A. Gano Austin Davis-Richardson Jennie R. Fagen Christopher T. Brown Adriana Giongo Jennifer C. Drew Luis A. Sayavedra-Soto Dan J. Arp Flavio A. O. Camargo Samira H. Daroub Ian M. Clark Steve P. McGrath Penny R. Hirsch Eric W. Triplett

Agricultural land management, such as fertilization, liming, and tillage affects soil properties, including pH, organic matter content, nitrification rates, and the microbial community. Three different study sites were used to identify microorganisms that correlate with agricultural land use and to determine which factors regulate the relative abundance of the microbial signatures of the agricu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده کشاورزی 1386

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