Author: W.G. Gensler Publisher: Springer ISBN: 9789401084598 Category : Technology & Engineering Languages : en Pages : 400
Book Description
The photosynthetic process of higher plants converts carbon dioxide, water, and, light quanta into reduced sugars. The enzymes which catalyze this conversion are contained within the chloroplasts and can be thought of as split into two distinct groups. In one group are the enzymes of the IIlightll reactions, which harvest the light, oxidize water and generate two energy-rich intermediates, ATP and NADPH. These two intermediates plus carbon dioxide are the substrates for the second group, the IIdarkll reactions or Cal vi n cycle, which produce the reduced sugars. The chloroplast is completely bounded by an outer membrane. There is a separate, highly convoluted membrane system, the thyla koid system, enclosed within the chloroplast. The enzymes of the light reactions are physically associated with the thylakoid mem branes, while the Calvin cycle enzymes are free-floating within the stroma, or soluble part of the chloroplast (Fig. 1). GRANA MEMBRANES ARE REG I ONS WHERE THE MEMBRANES ARE APPRESSED ON EACH OTHER MEMBRANES WH ICH ARE UNAPPRESSED THT1.AKO ID t1EHBRANE ARE STROMA MEMBRANES ( ) (VES I OJLAR) (c _______ Figure 1. Schematic representation of the photosynthetic process in plant chloroplasts. PC and PCred are the oxidized and reduced ox forms of plastocyanin. PQ and PQH2 are plastoquinone and plasto quinol. For explanation, see text.
Author: CSIRO (Australia) Publisher: CSIRO Publishing ISBN: Category : Science Languages : en Pages : 156
Book Description
Application in agriculture, Forestry and Environmental Science. Neutron moisture meter theory. Instrument design. Accuracy, bias and precision. Calibration. Field installation and maintenance. Site selection and representivity. Field practice, data acquisition and processing. Safety aspects.
Author: International Atomic Energy Agency Publisher: ISBN: 9789201010179 Category : Technology & Engineering Languages : en Pages : 0
Book Description
Nuclear and related techniques can help develop climate smart agricultural practices by optimizing water use efficiency. The measurement of soil water content is essential to improve the use of this resource in agriculture. However, most sensors monitor small areas (less than 1m in radius), hence a large number of sensors are needed to obtain soil water content across a large area. This can be both costly and labour intensive and so larger scale measuring devices are needed as an alternative to traditional point-based soil moisture sensing techniques. The cosmic ray neutron sensor (CRNS) is such a device that monitors soil water content in a non-invasive and continuous way. This publication provides background information about this novel technique, and explains in detail the calibration and validation process.
Author: J. David Cooper Publisher: John Wiley & Sons ISBN: 1119106028 Category : Science Languages : en Pages : 368
Book Description
This book is written for all those involved in measurement of soil water phenomena, whether they be environmental scientists, field technicians, agronomists, meteorologists, hydrogeologists, foresters, physical geographers, civil or water engineers or students in these subjects. It contains a comprehensive description of all the major methods used for measurement of soil water content and potential, solute concentration, transport and balance of water and solutes, including recharge to groundwater aquifers. The emphasis is firmly on techniques which can be applied in the field or on samples obtained from the field. The theory and practice of the workings of the main instruments and methods available is described, along with practical tips on surmounting some of the main difficulties and explanations of many commonly encountered jargon words.
Author: Ignacio RodrÃguez-Iturbe Publisher: Cambridge University Press ISBN: 9780521036740 Category : Science Languages : en Pages : 0
Book Description
Addressing the connections between the hydrologic cycle and plant ecosystems, the authors build suitable mathematical models and apply them to studying the ecosystem structure. Response to rainfall and climate forcing is analyzed from different areas of the world, including savannas, grasslands and forests. The book will appeal to advanced students and researchers in environmental science, hydrology, ecology, earth science, civil and environmental engineering, agriculture, and atmospheric science.
Author: International Atomic Energy Agency Publisher: ISBN: 9789201020185 Category : Technology & Engineering Languages : en Pages : 0
Book Description
This publication was developed as an informational guide for soil moisture mapping at landscape level through a portable 'backpack' cosmic-ray neutron sensor. This recently developed device monitors soil water content in a non-invasive way using background neutron counts. It is used to measure water content in the topsoil over wide areas, covering approximately 20 hectares with one single measurement. Through its mobility and combining series of measurements, this provides the spatial variability of the soil water content for better agricultural water management. The publication provides scientists, technicians and students with the necessary information, guidance and steps to calibrate, validate and deploy this portable cosmic-ray neutron sensor.
Author: Roland Wernecke Publisher: John Wiley & Sons ISBN: 3527652434 Category : Science Languages : en Pages : 476
Book Description
Moisture analysis covers a variety of methods for measuring high levels of moisture, as well as trace amounts, in solids, liquids, or gases. There are many applications where trace moisture measurements are indispensable for manufacturing and for process quality assurance. Trace moisture in solids must be controlled for plastics, pharmaceuticals and heat treatment processes. Measurement applications in gases and liquids include, for example, drying processes, hydrocarbon processing, pure gases in the semiconductor industry, natural gas pipeline transport, the conditioning of food and other products. Written by experts with over 20 years of experience in the field, this one-stop guide covers all aspects of these measurements, including both the theory and a wealth of practical know-how. As such, it includes guidelines on installation, on the realization of standards for absolute and relative humidity, verification and traceability measurements, equipment calibration methods and the latest research developments. Backed by numerous case studies, this practical book serves the needs of those working in the industry tasked with performing or developing new techniques and processes for moisture and humidity measurement. As a result, the scientist or engineer has all the information required for accurate, reliable, economically viable and efficient moisture measurement.
Author: W.G. Gensler
Author: Cornelius H. M. Van Bavel
Author: CSIRO (Australia)
Author: International Atomic Energy Agency
Author: Cornelius H. M. Van Bavel
Author: J. David Cooper
Author: Ignacio RodrÃguez-Iturbe
Author: International Atomic Energy Agency
Author: 
Author: Roland Wernecke