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4,134 Result(s)
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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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Chapter and Conference Paper
A Retarding-Accelerating Energy Analyser for SIMS
It is well known that secondary ion energy spectra can give us much interesting information. As a very high energy resolution is not needed for most cases, the retarding-accelerating energy analyser (derived f...
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Chapter and Conference Paper
The BEM Scheme for Axisymmetric Dynamic Torsion Problems and the Evaluation of Dynamic Stiffnesses of the Foundation
This study is devoted to the two aspects:
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Develops the BEM for axisymmetric torsion problems from statics (Mayr 1977) to dynamics;
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Chapter and Conference Paper
The Mathematical Modelling of Cocurrent Spray Drying
A mathematical model has been developed with the droplet size distribution being taken into account with a volume frequency function. The model is adequate in describing the overall behaviour of spray dryers. ...
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Chapter and Conference Paper
Surface-Enhanced SHG Study on Langmuir-Blodgett Mono-Molecular Layers
There is growing interest in the study of the classic Langmuir-Blodgett (LB) mono-molecular layers in recent years. Linear optical properties of LB film have been studied thoroughly with surface plasmon spectr...
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Chapter and Conference Paper
The Main Features of the 1.56-M Telescope and its Status Quo
This telescope was designed for determining the trigonometric parallaxes of faint stars. The otpical configuration is a Ritchey-Chrétien system and has only a f/10 Cassegrain focus for photographic work.
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Chapter and Conference Paper
Design Characteristics of the 1.56 m Astrometric Telescope and its Usage in Astrometry
The 1.56m astrometric telescope (Fig. 1) is designed mainly for determining trigonometric parallaxes of faint stars.
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Chapter and Conference Paper
Stochastic variational principle and diffusion processes
In this paper, we give a method to construct diffusion process with constant diffusion coefficient by a stochastic variational principle. The result is very similar to the classical case. We discuss also the r...
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Chapter and Conference Paper
Study of Adsorbates on a Silver Surface by Sum-Frequency Generation with Surface Plasmon Waves
Enhanced optical phenomena produced by the excitation of surface plasmon waves (SPWs) for surface studies have been employed extensively in the past years. Most of the non-linear optical effects on surfaces ha...
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Chapter and Conference Paper
The Sampling Theory of the Binary Random Field Decides the Relation about Point and Plane of the Extra Rainstorms
This paper studies the theoretical relation of rainstorm point-area coefficient and raises a correlation function sampling theorem. For the white noise of low frequency band-limitedand the stochastic process o...
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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 and Conference Paper
A Simulation of the Wing Leading-Edge Vortex and its Entrainment Effect
A numerical method for calculating the longitudinal aerodynamic coefficients and the lifting pressure distributions of wings with edge separation is presented. The computed model can include the effects of the...
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Chapter and Conference Paper
Dynamic Response of a Viscoelastic Circular Plate on a Viscoelastic Half Space Foundation
In the present paper, a dynamic problem of a thin viscoelastic circular plate under axisymmetric loads and resting on a viscoelastic half-space is discussed. This problem is reduced to a Fredholm integral equa...
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Chapter and Conference Paper
Harmonic boundaries and poisson integrals on symmetric spaces
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Chapter and Conference Paper
Superconducting transport properties and surface microstructure for YBa2Cu3O7-δ-based superlattices grown by pulsed laser deposition
YBa2Cu3O7−δ/PrBa2Cu3O7−δ, YBa2Cu3O7−δ/Pr0.7Y0.3Ba2Cu3O7−δ, and YBa2Cu3O7−δ/Pr0.5Ca0.5Ba2Cu3O7−δ superlattice structures have been grown by pulsed laser deposition. The superconducting properties of these YBa2Cu3O
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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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Chapter and Conference Paper
On p-adic cantor function
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Chapter and Conference Paper
Simulation and Estimation Procedures for Stress Release Model
The stress release model is a piecewise linear Markov Process similar to the collective risk model,in which the observations consist of the times and sizes of the Jumps, which are taken to represent the times ...