最新刊期
卷 26 ， 期 3 ， 1987
- 摘要：A high intensity of crustal movement around Shenzhen City area is shown by various determining methods, such as the amplitude and velocity of the differential uplifting and subsiding of the fault blocks, the hydro-thermal activities. the distributions of the block’s stress and the activities of faults and seismicity sin Late Tertiary, especially since Holocene.The fault zone does not provide the geological background of occuring macroseisms. The evaluation of the regional stability in Shenzhen Fault-block area shows that Shenzhen City belongs to a stable area. Though the facts that Shennzhes City is just located in the Shenzhen Fault Zone and the basement in Shenzhen is very scattered increase the investment and the working time, the fault zone had undergone a long time of erosion and formed a broad alluvial plain where has become sites for engineering constructions. After studying the Shenzhen Fault Zone, it is believed that its activity is weak and the possibility of causing great earthquakes is minor. As long as we pay enough attention to it, take corresponding treatment and strengthen the tacklings of the basement, we can ensure the safety of the city. In order to monitor the activities in different parts of Shenzhen Fault Zone, it is recommended that land deformation geodetic measurement, including leveling and triangulation should be carried on. and some datings of the active faults should be done.
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发布时间：2023-12-08 - 摘要：Implication and boundary on the delta, coastal location and limit of the transgression during the maximum stage of Holocene transgressson, characters on the development and environment of delta after the Holocene transgression and distribution on the traces of ancient man are discussed, taking the Zhujiang Estuary and Delta. as the examples. The models of develpmont in the Zhujiang Delta are also presented. Additionally, the some features on the morphology, the sedimentation and the environment in the Chanjiang and Hanjiang Delta are involved关键词： Holocene;Zhujiang River;Estuary;Delta;Cultural legacy;Environmental evolution
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发布时间：2023-12-08 - 摘要：The self-diffusion of strontium ions in ZSM-5 molecular sieves has been studied by radioisotopic traced method. the results show that selfdif fusion process takes place in two steps:a fast step and a slow step. the diffusion equation which controls reaction rate is expressed as D=4.9×10-112-1-1
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发布时间：2023-12-08 - 摘要：Presents the working principles of the cyclone separators with spreater. According to a series of experimental data, we could determine the velocity function in the pseudo-free vorticity region. The diameter of the separating pellets are calculated and the vortical air flow is obtained here. Calculating examples are given.
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发布时间：2023-12-08 - 摘要：we discuss the asymptotic behavior of the nonoscillalory solutions of the higher-order linear neutral functional differential equations and solve two conjectures made by G. Ladas and Y.G. Sficas.
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发布时间：2023-12-08 - 摘要：This paper supplemented the measures that keep particular path for two classical algorithms for shortest paths. Then, it provided an algorithm to seek all paths between two vertexes. This algorithm is convenient for implementation.
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发布时间：2023-12-08 - 摘要：This paper is about a special kind of unification problem in automatic theorem proving. that is, the items are the function satisfying associative and commutative laws, shortly, AC function. A simple sufficient and necessary condition is given to decide whether two AC functions can be unified. The time complexity is almost linear. And a unifier for two AC functions can be derived quickly. Also, the method can be extended.
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发布时间：2023-12-08 - 摘要：To develop further theory of limit theorems which based on the concepts of convergence in distribution or in probability of r.v’s, some authors intruduced anew type of convergence of sequences of r.v’s--stable convergence. We discuss this convergence more universally with sequences of random elements on a general complete separable metric space. and get some new results. Moreover. we make clear the relations between stable convergence and convergence in distribution or in probability. and give some interesting examples.关键词：Stable convergence;Convergence in distribution;Convergence in probability
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发布时间：2023-12-08 - 摘要：The physical implication of the so called "temperature of a moving body" was investigated. On careful analyses of the transfer of energy and heat between two bodies in relative motion. the following results were obtained: Just as in traditionary thermodynamics, so either in Planck-Einstein or in Ott-Moller formulation of relativistic thermodynamics, the "temperature" of a moving body can be regarded as the "potential of heat flow under purely thermal interaction". However, for lack of agreement on the definition of the "work", within relativistic thermodynamics, the "purely thermal interaction" can be defined differently. This has led to various opinions in temperature transformation about a higher or lower temperature for a moving body. In substance, different formulation are des cribing in different forms the very same physical reality; so, they are compatible.When one and the same formulation is followed, both the "hot-cold relationship" between moving bodies and the concept of "purely thermal interaction" depend on the selection of frame of reference. On this basis, an analysis about Landsberg’s thought experiment shows that there is not any logical contradition.关键词： relativistic thermodynamics;temperature of a moving body;purely thermal interaction;Landsberg paradox
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发布时间：2023-12-08 - 摘要：The Dose response characteristics of DPA/CBr4
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发布时间：2023-12-08 - 摘要：We generalize the Migdal-Kadanoff real space renormalizatioa group technique and apply the new methods to the-lattice gauge-Higgs field systems (for Z (2) and Z(4) groups,respectively). By the new methods, we derive the phase diagrams of these interction systems.
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发布时间：2023-12-08 - 摘要：This paper reports a new species of the genus Myrmelcolellix l. Bol. from Xinjiang, north-west of China. Type specimens arc preserved in the Research Institute of Entomology, Zhongshan University, Guangzhou.Myrmeleotcttix pluridentis sp. nov. (figs. 1-11).This new species is related to Myrmeteoiettix maculatus (Thunberg) but dif fers in the characters listed below.Fcmale unknown.Length (♂, mm): body: 17- 17.5;antenna: 9.5:pronoum: 1.2:elylca:12.5-13:hind femur: 10.5.Holotype ♂, paratype ♂ 1, Gongnaisi, Xinjiang, ⅤⅢ. 1983, taken by Li Jianglin
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发布时间：2023-12-08 -
- 关键词： Michelia;New species;M.oblongifolia;M.fulva;M.coriacea;M.opipara
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发布时间：2023-12-08 - 摘要：Aspergilus sp., a mutant of its parant strain obtained by using compound mutagenizatioc with UV irradiation and NTG treatment, produces an active α amylase when it was cultured in the liquid medium containing fowl feather powder or swine blood meal as the main nitrogen source. The present paper deals with the cultural conditions for α-amylase production by the organism and some properties of the enzyme.The essential results obtained from our present study are summarized as.follows:The optimal cultural temperature for enzyme formation was 30℃,and the most suitable havesting time was 48 hours after incubation.The enzyme was quite stable around pH 5 and at 40℃.The enzyme was well protected from heat denaturation by Ca2+关键词：Aspergilus sp.;α-amylase
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发布时间：2023-12-08 - 摘要：The vibration modle of the paper cone of alto loudspeakers under different frequencies were studied by means of photo holography. The disjunction vibration node points and nodal cycles on the paper cone of the loudspeakers are demonstrated. A new model of tome alto loudspeaker with excellent frequency response was successfully designed under the guidence of holographic results. The new ino del loudspeakers had relatively large diaphragms, the low frequenty toss oer point is as low as 350 Hz and the diameter of magnet is small关键词：holography;alto loudspeaker;tome;vibration;diaphagras
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发布时间：2023-12-08 - 摘要：The detail microscopic structure of the liver and pancreas in four species of fresh-water fish (Cirrhinus molitorella, Carassius auratus, Misgurnus anguillicaudatus and Clarius fuscus)was investigated and compared with particular reference to their distribution and interrelationship. The classification of the form and structure of the hepatopancreas in these fishes is discussed and several assump tions in view of the biogenesis and evolution are proposed.关键词： Hepatopancreas;Fresh-water fish;microscopic structure
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发布时间：2023-12-08 - 摘要：The correlation between the structures and the Fourier Transform IR spectra of 9-substituted, 9, 10-disubstituted phenanthrenes, and 10,10’-disubstituted-9, 9’-biphenanthrenes was studied. Their characteristic absorptions were found to be occurred in the regions of 1620-1480 and 900-650cm-1
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发布时间：2023-12-08 - 摘要：The crystal structure of 1,2-epoxysuberogorgin （Ⅱ ）, a new derivative of a natural product suberogorgin （Ⅰ ）, has been analyzed. The compound crystallizes with the formula C15H20O4. H2O, M= 282.34 and the space group P212121,=9. 373（1）, b=10.865（1）, c=14 .350（2）A, V=1461,3A, Z=4. Dx=1.285g·cm.and （000） = 608.00.The structure has been refined fo a filial R-factor=0.0547 for 1463 independently observed reflexions （|Fo|≥3σ |Fo|）:All the hydrogen atoms are found from the difference Fourier map
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发布时间：2023-12-08 - 摘要：The method of carbon agglutintion test (CAT) was used to investigate the relatoin of the wolf spider and its prey, rice leafroller, Cnephalocrocis medinalis and was fund that the rate of positive reaction of CAT was 91.49% while the rate positive reaction of double diffusion test was 70.21% in 47 samples, the sensitivity of CAT has increased 128 times than positive reaction of double diffusion test, and cut short test time from 24-48 hrs to 1 hr.The method included preparation of antigen of prey, preparation of antiserum, purification of antibody, preparation of carbon antiserum, collection and preparation of predator and carbon agglutiotion test.
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发布时间：2023-12-08
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