5,539 Result(s)
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Zheng-**ong **
Life Sciences
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Chapter and Conference Paper
A Comparative Study on Methods of Tillage of Paddy Soils in Taihu Lake Region
The principal rotation system in Taihu Lake Region is rice-wheat rotation. The traditional method of tillage is such that in the cultivated layer there is an upper sub-layer with muddy paste and a lower sub-la...
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Chapter and Conference Paper
The Status of Microelements in Relation to Crop Production in Paddy Soils of China: I. Boron
The paddy soils are a kind special cultivated soils, Their chemical characteristics are radically different from those of normal upland soils. Some nutrients are moblized and translocated, while others remain ...
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Chapter and Conference Paper
The Status of Microelements in Relation to Crop Production in Paddy Soils of China: III. Zinc
Zinc deficiency is the most common problem in paddy soils. Since the disorder was reported, it has become recognized as an important and widespread problem(l). In China, zinc deficiency is also found and it di...
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Article
The relationship between cation-induced fluorescence and membrane stacking in isolated spinach chloroplasts
In order to study the relationship between Mg++-induced fluorescence and membrane stacking, trypsin was used as a probe. Trypsin treatment diminished to a high degree the light-induced variable fluorescence and m...
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Article
Somaclonal genetics of rice, Oryza sativa L.
The inheritance and variations of some traits of more than 2,000 somatic cell derived plants of rice (Oryza sativa L.) were investigated in the second and third generations (T2 and T3) of regenerated plants (soma...
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Chapter
Some Advances on Azolla Research
In China most azolla is cultivated in the winter-spring season because it survives only with difficulty in large scale through the summer due to high temperature, pests, disease and algae. To extend azolla gro...
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Chapter
Production of faba bean and pea in China
China is by far the world’s largest producer of faba bean. Cultivation of the crop can be traced to ancient times and it is now widely distributed throughout the country — especially along the Yangtze River wh...
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Chapter and Conference Paper
Determination of Selenium Contents in Sera, Hair and Glutathione Peroxidase Activities in Whole Blood of Nasopharyngeal Carcinoma (NPC) Patients
The selenium contents in sera from 50 NPC patients (29 males, 21 females) and 56 healthy persons (29 males, 27 females) in an NPC high risk area, Sihui county, Guangdong Province were analyzed by fluorimetry w...
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Chapter
Anisodus acutangulus: Production of Scopolamine and Hyoscyamine in Cell Cultures
Anisodus (Solanaceae) comprises four species and three varieties, e.g. A. luridus, A. luridus var. fischerianus, A. acutangulus. A, acutangulus van breviflorus, A. mairei. A. tanguticus. A, tanguti...
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Article
Somatic cell culture of rice cultivars with different grain types: Somaclonal variation in some grain and quality characters
Variations in some grain and quality characters in progenies of regenerated rice plants were studied. Grain length and weight decreased significantly, yet gel consistency increased. Variations in these quantit...
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Article
An ecological study of soils in the Highlands of western Tibet I. Soils along an iso-altitudinal transect across western Tibet
A variety of soil studies were carried out along a 920-km transect running SE to NW from near the border with northern Nepal, through the Western Tibet Highlands (soils sampled at six locations at an elevation...
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Chapter
Somaclonal Variation in Rice
Rice is the staple food of more than half of the world’s population, and its present cultivation spans from latitude 53° N to 40° S (Lu and Chang 1980), from -23 to +7000 feet above sea level. It is cultivated...
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Article
Subcloning and functional analysis of aBacillus subtilis β-1,3-1,4-glucanase gene (bglS) inEscherichia coli
This article describes a 7.1kb EcoRI DNA fragment carrying aBacillus subtilis β-1,3-1,4-glucanase gene (bglS). By subcloning, a 1.5kb EcoRI-PstI DNA fragment was inserted into the polylinker cloning sites of the ...
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Article
Markers for human placental trophoblasts in two-dimensional gel electrophoresis
Primary cultures of trophoblasts established from human term placentae showed high viability and reproducibility. Two-dimensional gel patterns obtained by metabolically labeling the trophoblasts with [35S]-methio...
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Chapter and Conference Paper
Crystallographic Studies of the Catalytic Subunit of cAMP- Dependent Protein Kinase
The cAMP-dependent protein kinase (reviewed in Beebe and Corbin, 1986) is a tetrameric enzyme, probably ubiquitous in eukaryotic cells, composed of two regulatory and two catalytic (C) subunits. Upon binding c...
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Article
A quantitative cytochemical investigation of osteoclasts and multinucleate giant cells
Quantitative cytochemical, immunocytochemical, autoradiographic and electron cytochemical investigations have been used to compare osteoclasts with multinucleate giant cells that had been freshly obtained from...
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Article
A Study on the Occurrence Tendency of Tryporyza Incertulas by Grey Prediction
By means of the GM (1,1) modelling of grey system theory, the authors built the predicting models of Tryporyza incertulas (Walk) occurrence tendency with a computer, based on the insect pests occurrence data accu...
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Article
Retardation of cell aging by lipid peroxidation
Different concentrations of Fe e+/vitamin C mixtures were used as initiators of lipid peroxidation in diploid fibroblasts from cultured human embryonic lung. Malondialdehyde (MDA) formation in the cell culture...
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Article
Molecular cloning and expression ofBacillus subtilis bglS gene inSaccharomyces cerevisiae
A 2.7-kb EcoRI DNA fragment carrying aBacillus subtilis endo-β-1,3-1,4-glucanase gene (bglS) from theE. coli plasmid pFG1 was cloned into anEscherichia coli/yeast shuttle vector to construct a hybrid plasmid YCSH...
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Chapter and Conference Paper
Chinese saline lakes
China has many saline lakes. Most occur in the west and north-east. Four main regions can be distinguished: Qinghai-Tibet Plateau, North western, North-central and Eastern. All types of chemical composition oc...
