Dielectric Constants of Soils at Microwave Frequencies-2 PDF Download
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Author:
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ISBN:
Category :
Languages : en
Pages : 54
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Book Description
Author:
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ISBN:
Category :
Languages : en
Pages : 54
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Author: James Wang
Publisher:
ISBN:
Category : Microwaves
Languages : en
Pages : 44
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781726012447
Category :
Languages : en
Pages : 38
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Book Description
The dielectric constants of several soil samples were measured at frequencies of 5 and 19 GHz using the infinite transmission line method. The results of these measurements are presented and discussed with respect to soil types and texture structures. A comparison is made with other measurements at 1.4 GHz. At all three frequencies, the dependence of dielectric constant on soil moisture can be approximated by two straight lines. At low moisture, the slope is less than at high moisture level. The intersection of the two lines is believed to be a function of soil texture. Wang, J. and Schmugge, T. and Williams, D. Goddard Space Flight Center NASA-TP-1238, G-7802-13 RTOP 177-51-41...
Author: Jitendra Behari
Publisher: Springer Science & Business Media
ISBN: 1402032889
Category : Science
Languages : en
Pages : 177
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Book Description
This book offers detailed discussion of dielectric measurement and behaviour of wet soil, from theoretical and experiment points of view. The author describes numerous microwave measurement techniques and protocols, and shows how to evaluate and choose among them. The book is written primarily with the requirements of interdisciplinary researchers in agriculture and soil science in mind.
Author:
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ISBN:
Category : Science
Languages : en
Pages : 44
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Author: Stuart Nelson
Publisher: Academic Press
ISBN: 012802545X
Category : Science
Languages : en
Pages : 292
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Book Description
Dielectric Properties of Agricultural Materials and Their Applications provides an understanding of the fundamental principles governing dielectric properties of materials, describes methods for measuring such properties, and discusses many applications explored for solving industry problems. The information in this reference stimulates new research for solving problems associated with production, handling, and processing of agricultural and food products. Anyone seeking a better understanding of dielectric properties of materials and application of radio-frequency and microwave electromagnetic energy for solution of problems in agriculture and related fields will find this an essential resource. - Presents applications of dielectric properties for sensing moisture in grain and seed and the use of such properties in radio-frequency and microwave dielectric heating of agricultural materials - Offers information for finding correlations between dielectric properties and quality attributes such as sweetness in melons, or other desired characteristics of agricultural products - Identifies conditions for selective dielectric heating of materials such as insects in grain or biological organisms in soils - Provides a solid understanding of dielectric properties and the variables that influence these properties
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 410
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Author: Hiltmar Schubert
Publisher: Springer Science & Business Media
ISBN: 9401003971
Category : Science
Languages : en
Pages : 247
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This ARW is the third NATO-sponsored workshop on Explosives Detection and Humanitarian Demining. The previous events were • Detection and Destruction of Anti-Personnel Landmines Moscow, 1997 • Explosives Detection and Decontamination of the Environment Prague, 1997. Over the last decade applied research in Humanitarian Demining has made progress to some extend, but according to the tremendous tasks of Demining and the lack of scientific methods for practical detection of explosive devices, research activities are still of the same importance than ever before. Concerning countermeasures against terrorism the detection of explosives is one of the keyfactors, but the practical applications are not sufficient solved. An international exchange of research results are therefore urgent, to find out the most promising measures for application. The coincidence of this ARW and the terrible disaster of New York and Washington may demonstrate the importance of this task. In consequence the explosive device detection technologies can make a major contribution to collective, family and individual security. In developed countries, these technologies provide a strong deterrent and preventative measure against terrorist threats. In less developed regions, they can improve individual, institutional and state security, lessening the insecurity that motivates many terrorists acts. The elimination of landmine threats is just one of many ways of achieving this. However our attempts to meet the extremely difficult technical challenges posed by landmine and UXO contamination are inevitably leading us to new technological approaches.
Author: Gennadiĭ Petrovich Kulemin
Publisher: Artech House
ISBN: 9781580537346
Category : Technology & Engineering
Languages : en
Pages : 344
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Book Description
This ground-breaking resource offers you a detailed treatment of EDGE and its critical role in the development of the mobile Internet. The book explains how this global radio based high-speed mobile data standard can be introduced into GSM/GPRS networks, improving data transmission speeds to support multimedia services. It enables you to become thoroughly knowledgeable of EDGE specifications and covers concepts pertaining to several domains, including RF, signal processing, digital communications and communication networks.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 488
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
