1,875 Result(s)
within
Jia**g Cheng
English
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Article
An improved laser fluorimeter for the detection of traces of uranium
An improved laser fluorimeter and its application for the determination of ultratrace concentrations of uranium are described. The system developed uses a collecting lens-filter system, by which the density of...
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Chapter and Conference Paper
Linear Stability of a Periodic Orbit in the System of Falling Balls
We study linear stability of a periodic orbit in the hamiltonian system with many degrees of freedom introduced in [W1].
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Chapter
Systems Analysis and Rice Pest Management
Rice pest problems are complex. The level of pest attack and damage, and the way in which rice farmers deal with them are determined by a range of factors, including ecological and technical features of the cr...
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Chapter
A New Method to Determine Belowground Production in Forest Ecosystems
For understanding forest nutrient cycling, a reliable method to estimate belowground (root) production is needed. The methods employed so far are unsatisfactory (6) The aim this study was to utilize recent kno...
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Chapter
The Visualization of the Low Frequency Acoustical Radiation Field
This paper researches the relationship between the acoustical source of low frequency and its radiation field by using Nearfield Acoustical Holography (NAH). Simulation gives the spatial distributions of the i...
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Chapter
Genetic Transformation of Potato with Bacillus Thuringiensis HD 73 Cryia(C) Gene and Development of Insect Resistant Plants
Solanum tuberosum L. was transformed using an Agrobacterium tumefaciens binary vector containing DNA encoding a translational fusion between the Bacillus thuringiensis var. kurstaki (B.t.k.) HD-7...
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Article
Acetosyringone and osmoprotectants like betaine or proline synergistically enhance Agrobacterium-mediated transformation of apple
The effects of the plant signal molecule acetosyringone (AS) and the osmoprotectant betaine phosphate (BP) have been examined for their ability to increase the transformation efficiency of Agrobacterium tumefacie...
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Chapter
Density-related Effects on the Components of Fitness and Population Dynamics of Planthoppers
The extent to which populations are “regulated” or suppressed by density-dependent factors continues to be the subject of extensive ecological debate (see Slade 1977; Strong 1984; Vickery and Nudds 1984; Hasse...
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Article
Prediction of bone density from vitamin D receptor alleles
BONE density achieved in early adulthood is the major determinant of risk of osteoporotic fracture. Up to 60% of women1,2 suffer osteoporotic fractures as a result of low bone density2, which is under strong gene...
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Chapter
A Systems Approach to Planthopper Population Dynamics and Its Contribution to the Definition of Pest Management Options
Changes in pest management technology and in its perception and risk have resulted in the adoption of different control approaches. As illustrated by developments in the United States, Perkins (1982) showed th...
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Protocol
Protoplast Electrofusion and Regeneration in Potato
Protoplast fusion and subsequent in vitro plant regeneration, leading to somatic hybridization, offer opportunities for transferring entire genomes from one plant into another, regardless of the interspecific ...
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Article
Rapid optimization of electroporation conditions for plant cells, protoplasts, and pollen
The optimization of electroporation conditions for maximal uptake of DNA during direct gene transfer experiments is critical to achieve high levels of gene expression in transformed plant cells. Two stains, tr...
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Article
Colorado potato beetle resistant somatic hybrid potato plants produced via protoplast electrofusion
Leptines are natural glycoalkaloids found only in certain selections of the wild potato speciesSolanum chacoense. These rare glycoalkaloids have been identified to be phytochemical defensive agents against insect...
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Article
Electromechanical effects of acetylcholine on the atrial tissues of the cultured tilapia (Oreochromis nilotica × O. aureus)
The effects of acetylcholine (ACh) on the action potential and twitch force of atrial tissues isolated from 15 tilapia (Oreochromis nilotica × O. aureus) were studied by means of conventional microelectrode techn...
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Chapter
Autoimmunity Due to Defective NUR77, Fas, and TNF-RI Apoptosis
Several molecules and pathways known to be of importance in apoptosis have been described in the thymus; however, their contribution to clonal deletion and tolerance induction remains controversial1–4. Although k...
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Article
Intact 5-HT2A Receptor Exons and the Adjoining Intron Regions in Schizophrenia
Genes that regulate serotonergic (5-HT) systems may underlie the etiology of schizophrenia. In this study the gene encoding the 5-HT2A receptor in schizophrenics and healthy controls was examined. First, we seque...
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Chapter
Multiparameter Inversion of Elastic Wave with a Single Impulse Source
We present a single impulse source method to reconstruct two-dimensional variations in elastic materials with inhomogeneous density and elastic Lame parameters. For the case of seismic exploration, i.e., the s...
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Article
Correction: Prediction of bone density from vitamin D raceptor alleles
Nature 367, 284-287 (1994) .... In order to expand our original observations of a relationship between bone density and vitamin D receptor (VDR) genotype and to examine other genes potentially involved in bone...
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Article
Clinical study on Shuxuening combined with antipsychotics in treating chronic schizophreniacombined with antipsychotics in treating chronic schizophrenia
Objective: To make a preliminary evaluation of the clinical efficacy of Shuxuening (SXN).Methods: One hundred and forty-nine chronic schizophrenic patients were divided randomly into the SXN grou...
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Article
The Werner syndrome protein is a DNA helicase
Werner syndrome (WS) is an uncommon autosomal recessive disorder characterized by premature aging. The clinical manifestations of WS, including atherosclerosis and osteoporosis, appear early in adulthood, and ...
