447 Result(s)
within
Chapter
Lu**g Li
Biotechnology
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Chapter
Nuclear Magnetic Resonance Studies of Hydrogen Bonding
Hydrogen bonding is a very significant type of interaction, and is of widespread occurrence. According to Pimentel and McClellan,(1) a hydrogen bond exists between a functional group A—H and an atom or a group of...
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Chapter and Conference Paper
Conversion of hemicellulose carbohydrates
Hemicellulose can be converted to a variety of useful products. There are two approaches to hemicellulose bioconversion; hemicellulose can be directly converted, or the hemicellulose-derived carbohydrates can ...
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Chapter
Freeze Preservation of Suspension Cultures of Potato
For crop improvement, it is important to preserve the sources of the gene pool. Due to the high cost of gene preservation by conventional methods, scientists have been searching for alternatives. One of the mo...
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Chapter
In Vitro Induction of Cold Acclimation in Potato
Potatoes are cultivated primarily in the temperate zone of North America and Europe, and in the Andean highlands of South America. Unseasonal frosts are considered to be one of the major factors limiting potat...
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Chapter
A Study of Elastic-Viscoplastic Constitutive Equation for Tian-Qing Gel
An elastic-viscoplastic consititutive equation has been proposed to describe the rheological properties of Tian-Qing gel. The experimental results show that the theoretical analysis give satisfactory agreement...
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Chapter
NMR Spectroscopy of Tumors
Magnetic resonance imaging is widely employed in the clinical detection of cancer. Discrimination of tumors from surrounding normal tissues is based on differences in relaxation times, which are usually longer...
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Chapter
Effects of Shear Modulus of Polymer Gels
Gels exhibit mechanical properties characteristic of both solid and liquid-gas systems. From the compressibility (bulk modulus) point of view, a gel network system behaves like liquid-gas system. The value of ...
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Chapter
Estimation of Respiratory Mechanics in Dogs With Acute Lung Injury
In the pathogenesis of adult respiratory distress syndrome (ARDS), changes of pulmonary mechanics could lead to ventilation-perfusion ratio mismatch and refractory hypoxeaia (Snapper, 1985), Real-time monitori...
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Chapter
Studies on the Symbiotic Nitrogen-Fixing Actinomycete Frankia in China
Nitrogen fixation by symbiotic and asymbiotic microorganisms has been studied for a number of years at the Laboratory of Soil Microbiology of the Institute of Applied Ecology. In 1978, Callaham and his colleag...
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Chapter
Theory and Mechanistic Concepts
It is sometimes useful to think of ultrafiltration (UF) as simply flow through pores in which separation is a sieving process based on relative molecular size. However, starting from this simple concept, more ...
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Chapter
Symbiotic Nitrogen Fixation Resources: A Study on Sinorhizobium fredii and Bradyrhizobium japonicum and Their Applications
With the development of problems, such as that of food, population, energy resources and environmental pollution, scientists are now focusing on biological dinitrogen fixation in order to make a contribution t...
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Chapter
Intact Incorporation of Partially Assembled Intermediates into Acetate-Derived Polyketide Antibiotics
The polyketide pathway is one of the major biosynthetic routes to commercially important antibiotics.1 A large number of previous investigations support the hypothesis that the mechanism of formation of polyketid...
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Chapter
Preparation and Properties of Pillared Synthetic Boron-Containing Saponite
A novel synthetic boron-containing saponite was prepared hydrothermally at 260°C under autogenous pressure in the system of Na2O-SiO2 -Al2 O3-B2O3 — MgO. The alumina-pillared synthetic boron-containing saponite [...
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Chapter
Introduction and Definitions
Ultrafiltration (UF) is primarily a sizeexclusion-based pressure-driven membrane separation process. UF membranes typically have pore sizes in the range from 10 to 1000 Å and are capable of retaining species i...
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Chapter
Applications and Economics
Many ultrafiltration (UF) applications are already being practiced in industry and more are being studied.Porter (1977) listed 34 UF applications in 1977; these included applications in the food industry, phar...
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Chapter
Preparation and Properties of Pillared Synthetic Boron-Containing Saponite
A novel synthetic boron-containing saponite was prepared hydrothermally at 260°C under autogenous pressure in the system of Na2O-SiO2- Al2O3-B2O3 - MgO. The alumina-pillared synthetic boron-containing saponite [d...
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Chapter
Module and Process Configuration
Several membrane configurations are available both commercially (see Figure29-1) and at the laboratory level. Polymeric membranes can be cast or extruded, as either flat sheets or in cylindrical geometry. Flat...
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Chapter
Theory
This chapter describes the theory behind batch extraction with emulsion liquid membranes (ELMs). The extension of the theory to continuous ELM processes is given in Chapter 38 on design considerations. The the...
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Chapter
Leghemoglobins and Their Gene Expressions
All nitrogen-fixing legume root nodules resulting from infection by symbiotic Rhizobium contain leghemoglobin. Leghemoglobin facilitates and regulates the flow of oxygen to the nitrogen-fixing bacteroids, resulti...
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Chapter
Characteristics, Distribution, Ecology, and Utilization of Astragalus Sinicus-Rhizobia Symbiosis
Astragalus sinicus L. is a symbiotic nitrogen-fixing leguminous green manure crop traditionally grown in rice fields in the lower Yangtze Valley, southeastern China and Japan. In the lower Yangtze ...
