نتایج جستجو برای: envi and edrisi
تعداد نتایج: 16827464 فیلتر نتایج به سال:
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...
acknowledgements i wish to express my gratitude to all those who have helped me in preparing this thesis. i would like to express my deep gratitude to my respected advisor dr. kourosh akef, whose advice and comments helped me in the early stages of the research and throughout the writing process. i would also like to express my gratitude to dr. hajar khanmohammad whose invaluable guidance he...
We investigated the determination of N-methylcarbamate pesticides and their metabolites in agricultural products by HPLC with post-column fluorescence detection after clean-up with an SPE cartridge. The homogenate of agricultural products was extracted with acetone. The crude extract was partitioned between 5% sodium chloride solution and dichloromethane, and the dichloromethane layer was conce...
An Improved Synthetic Variable Ratio (ISVR) fusion method is proposed to merge high spatial resolution panchromatic (Pan) images and multispectral (MS) images based on a simulation of the panchromatic image from the multispectral bands. Compared to the existing SVR (Synthetic Variable Ratio) family methods, the ISVR method manifests two major improvements: a simplified and physically meaningful...
A vital issue in context of modern distributed com puting environments is a simple and safe use of the computing storage and communication facilities present on the network In this paper we propose an agent based architectural concept for such an envi ronment which should assist the user in submitting requests to the distributed system in a transparent way The user should not need speci c knowl...
Most businesses of today are increasingly becoming dependent on computer systems in their daily operation. Businesses need to respond quickly and accurately to be able to compete in their rapidly changing envi ronments. It is important that organizations and businesses become aware of the gain that could be realized by applying Integrated Computer Aided Software Engineering to their systems des...
The future distribute dsystems will be very heteroge ne ous They will consist of end computing systems with widely varying capabilities inter connected by networks which o er very di erent services Delivering data with a guarante edlevel of servic e is a real problem that re quir es both support at the network level integrated ser vices networks and a QoS Quality of Servic e man agement envir o...
Greening of facades is a non-expensive option to increase the amount of vegetation in urban areas. Especially in areas with dense settlement, the filtering effect of facade greening can improve urban air quality. In this paper, results from field experiments and numerical simulations are presented. Using Atomic Absorption Spectrometry the amount of heavy metals on leaf samples from seven houses...
Mobility is the key to contemporary life. While most research activities during recent years concentrated on the representation and modeling of moving objects within GIS environments, analysis tasks have been sorely neglected, especially in the field of environmental GIS. This paper provides an overview of the sparse analysis methods available for dynamic point objects. The methods are classifi...
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