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   Science & Technology Review
2013, Vol.31, No. 10
08 April 2013

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卷首语

Science & Technology Review. 2013, 31 (10): 3-3. ;  doi:
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Abstract ( 114 )
科技风云

Science & Technology Review. 2013, 31 (10): 7-7. ;  doi:
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Abstract ( 91 )
特别栏目

Science & Technology Review. 2013, 31 (10): 8-8. ;  doi:
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Science & Technology Review. 2013, 31 (10): 8-8. ;  doi:
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Science & Technology Review. 2013, 31 (10): 10-10. ;  doi:
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Science & Technology Review. 2013, 31 (10): 11-11. ;  doi:
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Science & Technology Review. 2013, 31 (10): 12-12. ;  doi:
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Science & Technology Review. 2013, 31 (10): 13-13. ;  doi:
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Science & Technology Review. 2013, 31 (10): 14-14. ;  doi:
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Science & Technology Review. 2013, 31 (10): 81-81. ;  doi:
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Science & Technology Review. 2013, 31 (10): 82-82. ;  doi:
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Abstract ( 87 )

Science & Technology Review. 2013, 31 (10): 82-82. ;  doi:
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Abstract ( 87 )

Science & Technology Review. 2013, 31 (10): 86-88. ;  doi:
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Science & Technology Review. 2013, 31 (10): 89-89. ;  doi:
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Science & Technology Review. 2013, 31 (10): 90-92. ;  doi:
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Science & Technology Review. 2013, 31 (10): 94-94. ;  doi:
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Science & Technology Review. 2013, 31 (10): 95-95. ;  doi:
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Abstract ( 86 )

Science & Technology Review. 2013, 31 (10): 96-96. ;  doi:
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Abstract ( 76 )
科技事件

Science & Technology Review. 2013, 31 (10): 9-9. ;  doi:
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Abstract ( 75 )
Exclusive

Science & Technology Review. 2013, 31 (10): 15-17. ;  doi:
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Abstract ( 359 )
Articles

Design and Implementation of Space Weather Quantitative Forecasting System

ZOU Ziming;GAO Wenjian;ZHANG Xiaoxin;TONG Jizhou
Science & Technology Review. 2013, 31 (10): 18-23. ;  doi: 10.3981/j.issn.1000-7857.2013.10.001
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Abstract ( 204 )
The space weather model system is a system that works under a particular model computing framework, an integration of multiple space weather models, and the realization of the quantitative analysis of the space weather. In order to strengthen the links among the models, to improve the operation ability of the prediction model and to enhance the domestic space weather forecast capacity, we have designed and implemented the space weather model system that integrate models for China's space weather quantitative forecast system. With the computing framework as the core, it makes use of the model service component, the visualization service component, the data management service component in its architecture. The system can provide a high-speed computing environment for models in five space areas, realize the encapsulation and the integration of the space weather models, and output the calculation results in a variety of visual forms. The system has a high efficient business scheduling and data transmission capacity, wth good system performance, prediction efficiency and interface for scientific research users.

Tarim Basin Middle-upper Ordovician Carbonate Strata Sequence Framework and Its Control of Reef Beach Body

WANG Enhui;
Science & Technology Review. 2013, 31 (10): 24-29. ;  doi: 10.3981/j.issn.1000-7857.2013.10.002
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Abstract ( 540 )
Based on the outcrop and drilling data, using the sequence stratigraphy, biostratigraphy and sedimentary theory, the Tarim Basin middle-upper Ordovician carbonate strata sequence framework and the relations between the sequence and the reef-shoal development are established. It is shown that the middle-upper Ordovician develops 5 third-grade sequences. The 3 third-order sequences of Lianglitage Formation in Tazhong area can be further divided into 7 fourth-order sequences, and the middle-upper Lianglitage Formation in Tazhong area and the Sangtamu Formation in Tabei area are contemporaneous heterotopic facies, so the Lianglitage Formation in Tazhong and Tabei is obviously a diachronism stratigraphic unit. The Liangligeta Formation in Tazhong area develops 5 periods of the reef beach body, the high-frequency sequences can well control the reef beach body development and is of great significance for the later reel-flat reservoirs prediction.

Layer-by-layer Calculation of the Macroscopic Capture Cross Section of Mixed Formation Water in Water-flooded Zone

WANG Jingci;LINGHU Song;XU Wenyuan;YAO Junpeng
Science & Technology Review. 2013, 31 (10): 30-34. ;  doi: 10.3981/j.issn.1000-7857.2013.10.003
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Abstract ( 213 )
The salinity of the mixed water in the water flooded zones injected by the fresh water and the sewage has a great variation. As an important parameter in a remaining oil saturation calculation model in a cased hole, the macroscopic capture cross section of the mixed formation water is difficult to determine. The distribution of the salinity and solutes in the mixed formation water from the water flooded layer in the study area shows that it is necessary to calculate the macroscopic capture cross section of the mixed formation water layer by layer. Pulsed neutron-neutron well logging evaluation in the water-flooded zone is taken as an example in this paper. Firstly, the original oil saturation model is established. And then the macroscopic capture cross section of the formation fluid is determined. Finally, the macroscopic capture cross section of the mixed formation water is calculated based on the static and dynamic logging information. As the water flooding degree of some sampling points is inhomogeneous in the same layer, the method can also calculate the corresponding macroscopic capture cross section of the mixed formation water. The practical application shows that this method accurately reflects the variability of the salinity of the formation water. The calculation accuracy is improved because the difference between layers has been taken into consideration. This method also provides a new way for the quantitative assessment of the water flooded zones injected by the fresh water and the sewage by using some comprehensive methods to consider the dynamic and static logging data.

Stratigraphic Correlation Research by Applying Logging Stratigraphy

NIE Yongsheng;WEI Shengxiang;TIAN Jingchun;HAN Jianhui;SUN Li
Science & Technology Review. 2013, 31 (10): 35-39. ;  doi: 10.3981/j.issn.1000-7857.2013.10.004
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Abstract ( 166 )
By combined with the practice of oil field logging stratigraphic, the principal and method of special logging-stratigraphy are described. Some logging stratigraphic connotations are generalized, including the characteristics of combinations, the characteristics of relative stability and easy change, and complete stratigraphic sequence, etc. The four key steps of stratigraphic division and correlation are also summarized as follows:(1) distinguishing the logging characteristics of relative stability and easy-changed formations; (2) establishing a complete stratigraphic sequence; (3) developing the standard section in areas; (4) dividing formations in areas and contrasting the formations. The logging stratigraphic correlation is refined by using the method; and it is not only promoting the prosperity of the stratigraphy research, but also beneficial to the production and research work of oilfield.

Numerical Simulation of Multilayer Orebody Mining Sequence Based on the Index Contentment Degree

DENG Hongwei;HUANG Wei;HU Pulun;GAO Feng
Science & Technology Review. 2013, 31 (10): 40-46. ;  doi: 10.3981/j.issn.1000-7857.2013.10.005
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Abstract ( 162 )
Abstract Mining sequence is one of the important research contents for mining engineering. Different secondary stress field would be formed with different mining process and filling sequence. By means of reasonable arrangement and adjustment of the mining sequence of orebody, the stress distribution of the surrounding rock is able to be remarkably changed, the current excavated working face is able to be in the stress-reduced area and the phenomenon of stress concentration in course of mining process could be also avoided. Rational mining sequence is able to largely improve the stability of stope and the security of working face. According to multilayer orebody occurrence characteristics and mining technical conditions of Laochang 13-8# ore groups, by using 3Dmine-MIDAS/GTS-FLAC3D coupled numerical simulation method, numerical simulation study on the mining sequence of multilayer orebody is carried out and four kinds of optimization schemes of multilayer orebody mining sequence are put forward, namely, downward mining from upper to lower, overhead mining from upper to lower, downward mining from lower to upper, and overhead mining from lower to upper. By applying the multi-index comprehensive evaluating model based on index contentment degree and considering stress fields, displacement fields, and crack fields comprehensively, the four multi-index comprehensive contentment degrees of the optimization schemes for mining sequence are 0.684, 0.641, 0.653, and 0.683, respectively. The contentment degree of the overhead mining from lower to upper is 0.683. Therefore, the result indicates that the overhead mining from lower to upper is feasible in the theory.

Applications of Frequency Division Interpretation Technique in Depicting Channel Sand Body: Taking Area of Sue Nenol as Example

ZHANG Mingxue;SHI Xiaosong
Science & Technology Review. 2013, 31 (10): 47-51. ;  doi: 10.3981/j.issn.1000-7857.2013.10.006
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Abstract ( 196 )
In order to study sedimentary facies partition of sparse well area, and analyze the sedimentary environment, frequency division interpretation technology is used for processing analysis, the purpose is to solve the above problems. Frequency division interpretation technique converts seismic data from time domain into the frequency domain using the discrete Fourier transform method in order to observe sandstone transverse discontinuity, which plays a role of lateral prediction. Based on the principle of frequency division interpretation technique, it depicts the channel sand body in the HST of the second section of Damoguaihe late formation in Sue Nenol. Comparing with conventional seismic attributes, frequency division has a good response to identify channel sand body boundary, plane distribution morphology, and lateral discontinuity. It is a better guide for the classification of sedimentary facies on sparse well area. Finally, the conclusion is that the HST of the second section of Damoguaihe late formation in Sue Nenol mainly developed in Anastomosing River Delta. In sparse well area, it developed the features of distributary channels, characteristic is very clear and it overcomes the problem of non-well constraint.

Assessment of Extensibility of Environment-Damage of Mountain Area's Highway Construction

WU Chao;YANG Mengying;CHEN Yuanjiang;WANG Xiran
Science & Technology Review. 2013, 31 (10): 52-57. ;  doi: 10.3981/j.issn.1000-7857.2013.10.007
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Abstract ( 176 )
The construction of a highway in mountain areas would influence the environment along the line, in the form of the water environment pollution, the air environmental pollution, the sound pollution,the ecological environment pollution and the social environmental impact. Therefore, the assessment of the highway construction environmental damage is of great importance. In order to evaluate the overall impacts of the area's highway construction project on the district environment, this paper proposes an indicator system of the environmental impact assessment, and uses the extension theory to evaluate the impairment of the environment by the matter element extension method. As an example, the Zhangjiajie-Huayuan expressway construction project is evaluated. The evaluation matter element model of the environment effect is established according to the survey data collected on the Zhangjiajie to Huayuan expressway. At the same time, the extensional evaluation method with correlative functions is used. It is shown that the evaluation results obtained from this method by eliminating the human intervention, using the correlated function and the weight coefficient of the element extension method agree well with the real situations, and represent the main characteristics of the environment influences.

Cloud Support Model for Naval Gun Equipment Based on Internet of Things

MI Qiaoli;XU Tingxue;LIU Yong;YANG Jikun
Science & Technology Review. 2013, 31 (10): 58-61. ;  doi: 10.3981/j.issn.1000-7857.2013.10.008
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Abstract ( 240 )
Facing the challenge of the information battle, the informationization degree of the equipment support directly affects the operational readiness and the mission success. With the idea of combining the clouding computing technique with the Internet of Things(IoT), the support missions for the naval gun equipment are analyzed, and then the cloud support frame of the naval gun equipment is proposed, based on the military equipment LAN built by the IoT and the basic cloud computing frame. The quick and safe communication between the clouds is ensured by this new frame, in which each data center responding to the support missions is viewed as a private cloud, and the information is collected and transferred by the sensor network and the wide area communication network. The two implementation aspects, the support course and the resource, are discussed. Consequently, the informationization degree and the connectivity of the naval gun equipment support are enhanced. The real-time and visualized surveillance of the support course is realized, with the dynamic and highly efficient management of the support resource.

Characteristics of the Overlying Sediments in Yungang Grottoes and Its Impact on Surface Water Infiltration

DONG Pei;WANG Xusheng;WAN Li;QIAN Jing
Science & Technology Review. 2013, 31 (10): 62-66. ;  doi: 10.3981/j.issn.1000-7857.2013.10.009
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Abstract ( 159 )
The quaternary sediments overlying on the sandstones in the Yungang Grottoes with a certain of thickness are able to slow down surface water infiltration and reduce the damage of the grottoes from water intrusion. The gravel sand layer in the lower part of the sediments is not important because of its high permeability, whereas the upper silty soil layer plays an essential role for stopping infiltration due to its low permeability. The thickness of the silty soil is the key factor. When a surface pond of water exists, based on artificial infiltration test, it is indicated that the water would quickly move to the top of sandstone if the thickness of the silty soil is less than 0.7 m, however it could be effectively blocked if the thickness of the silty soil is greater than 1.1 m. Surface water could also quickly infiltrate into a thin silty soil and then have influence on the grottoes through lateral seepage. The root canals of plants would significantly speed up the infiltration rate. Accordingly, in order to reduce the risk of water intrusion, planting trees on the top of Yungang Grottoes should not be encouraged.
Reviews

Progress in the Technique of in situ Algae Control for the Eutrophicated Water

ZHANG Yinjiang;LI Yan;ZHANG Manman;ZHANG Leting;LI Zhen;DUAN Ting;DONG Yue
Science & Technology Review. 2013, 31 (10): 67-73. ;  doi: 10.3981/j.issn.1000-7857.2013.10.010
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Abstract ( 161 )
Algae bloom causes water hypoxia and reduces water transparency, resulting in the suffocation and death of aquatic animals, destroying water ecosystems, and endangering human life and health. The harm of algae bloom and the major techniques for in situ algae control by the methods involving physics, chemistry, and biology are summarized; the merit and demerit of each technique are analyzed based on the algae control practices discussed. It is suggested that by removing excessive endogenous nutrients complemented with the algae control technique, meanwhile strengthening the environment quality management by intercepting pollution; these comprehensive measures would become the important direction to accomplish the long-term control of algae and the restoration of water quality.

Developing Status of New Techniques and New Energetic Materials in Insensitive Pyrotechnics

WANG Yu;WEI Chao;ZHANG Song
Science & Technology Review. 2013, 31 (10): 74-79. ;  doi: 10.3981/j.issn.1000-7857.2013.10.011
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Abstract ( 241 )
The sensitivity and anti-interference ability of pyrotechnics is important to ammunition safety. Therefore, improving insensitive pyrotechnics is the key point for the insensitive weapon research. Most advanced techniques, such as light, electricity, and magnetism are taking place of fire and heat in pyrotechnics, making pyrotechnics much more safety. The advances in the areas of new techniques and new energetic materials for insensitive pyrotechnics are discussed. New techniques, such as laser ignition, explosive logic circuit, and slapper detonator, are reviewed. The structure, principle, history, and latest achievements are introduced. The research level between China and developed countries is compared with each other; the developing trend of these techniques is talked about. In addition, new energetic materials invented by developed countries, such as LLM-105, DAAzF, FOX-7, TNAZ are summarized, and their developing status is introduced. By comparing the differences between China and developed countries, the shortcoming of China is pointed out, particularly some deficiencies in insensitive pyrotechnics. Some suggestions about the development strategy of insensitive pyrotechnics are given. Insensitive pyrotechnics is the key point of weapon safety, since the battle field survivability of soldiers and battle platforms become the factor of victory or defeat. It is also important to efficiently translate them into the productivity and fighting capacity by following the latest scientific research, working hard on self-determination innovation, and planning new product applications.
书评

Science & Technology Review. 2013, 31 (10): 80-80. ;  doi:
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Abstract ( 109 )
主编心语

Science & Technology Review. 2013, 31 (10): 83-83. ;  doi:
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Abstract ( 79 )
科技纵横捭阖

Science & Technology Review. 2013, 31 (10): 84-84. ;  doi:
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Abstract ( 106 )
科技职场

Science & Technology Review. 2013, 31 (10): 85-85. ;  doi:
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Abstract ( 104 )

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