Collect | Home Page 
   
Office Online  
Journal Online
· Forthcoming Articles
· Current Issue
· Archive
· Advanced Search
· View by Fields
· Archive By Subject
· Special Issues
· Download Articles
· Read Articles
· Email Alert
· Recommended
Links
·
·
·
·
·
·
·
·
·
·
·
   Science & Technology Review
2017, Vol.35, No. 15
13 August 2017

Spescial Issues
Articles
Focus
Foreword
Columns
Scientific Community Promotion
Book Reviews
Perspectives
Scientists
News Around
News Focus
Careers
Special Issues
Suggestion
Voice of Scientific Community
Top News
Scientific Community
Select | Export to EndNote
Columns

Hot!

Science & Technology Review. 2017, 35 (15): 0-0.
Full text: HTMLnew PDF  (793 KB)  ( 51 )
Abstract ( 155 )
Foreword

Science & Technology Review. 2017, 35 (15): 1-1.
Full text: HTMLnew PDF  (295 KB)  ( 109 )
Abstract ( 280 )
News Around

Science & Technology Review. 2017, 35 (15): 7-7.
Full text: HTMLnew PDF  (344 KB)  ( 55 )
Abstract ( 166 )
News Focus

Science & Technology Review. 2017, 35 (15): 9-9.
Full text: HTMLnew PDF  (366 KB)  ( 172 )
Abstract ( 168 )
Suggestion

Science & Technology Review. 2017, 35 (15): 11-12.
Full text: HTMLnew PDF  (509 KB)  ( 570 )
Abstract ( 287 )
Perspectives

Science & Technology Review. 2017, 35 (15): 13-14.
Full text: HTMLnew PDF  (468 KB)  ( 105 )
Abstract ( 305 )

Science & Technology Review. 2017, 35 (15): 92-93.
Full text: HTMLnew PDF  (1898 KB)  ( 96 )
Abstract ( 151 )
Special Issues

Penetration and application of artificial intelligence into military field

WANG Li
Science & Technology Review. 2017, 35 (15): 15-19. ;  doi: 10.3981/j.issn.1000-7857.2017.15.001
Full text: HTML PDF  (574 KB)  ( 932 )
Abstract ( 478 )
The history and status quo of artificial intelligence technology are analyzed. Then several core issues are discussed including the connotation of information war, artificial intelligence technology development trend, and speeding up our army artificial intelligence application. Finally, some constructive thinking is put forward for the development of artificial intelligence technology application in China's military field in the future.

Model devolopment and combat ability analysis for foreign armed helicopters

YU Qi
Science & Technology Review. 2017, 35 (15): 28-33. ;  doi: 10.3981/j.issn.1000-7857.2017.15.003
Full text: HTML PDF  (4329 KB)  ( 127 )
Abstract ( 166 )
Among the army helicopters, armed helicopter is a kind of equipment that deserves the name of attackor, so it is called attack helicopter. With the advent of such helicopters, army helicopters are playing their poles not only in logistics but also in the forent. As a weapon, armed helicopter is a firing platform at over low altitude. This article introduces the foreign armed helicopter development and analyzes its combat capability, weapon configuration and actual combat application.

Investigation on insulation support performance in electromagnetic launcher

ZHAO Weikang, XU Rong, YUAN Weiqun, YAN Ping
Science & Technology Review. 2017, 35 (15): 34-39. ;  doi: 10.3981/j.issn.1000-7857.2017.15.004
Full text: HTML PDF  (4562 KB)  ( 58 )
Abstract ( 99 )
The high temperature ablation in the process of pulsed high current discharge would reduce the insulation performance of the insulation support and affect the life and efficiency of the system. To investigate the destructive effect of ablation on epoxy resin insulation, we use argon arc welding to modify the surface epoxy resin with different values of ablation current, time, distance and area so as to obtain samples with different ablation situations. The surface resistivity and surface flashover voltage of the samples are then measured. The results show that the insulation property of the epoxy resin after high temperature ablation degrades greatly. Scanning electron microscopy and energy spectrum analysis indicate that the increasing surface roughness and oxide would reduce the insulation property of epoxy resin.

Construction of scientific and technological innovation system of military enterprises based on DARPA mode

WANG Li, ZHANG Long
Science & Technology Review. 2017, 35 (15): 40-44. ;  doi: 10.3981/j.issn.1000-7857.2017.15.005
Full text: HTML PDF  (1106 KB)  ( 107 )
Abstract ( 259 )
Under the new situation, an in-depth analysis of the opportunity for China to construct its science and technology innovation system is presented, and DARPA's successful experience in innovative culture, organization, project management and other aspects is overviewed In view of the constraints that restrict the development of science and technology innovation of military enterprises, a mode of thinking to build the innovation system is put forward. Through the establishment of innovation system it is possible to explore the management mechanism of science and technology innovation zone under new situation, so as to provide references for system construction of military enterprise science and technology innovation.
Spescial Issues

Military applications of modern lighter-than-air vehicles

HUANG Wanning, LI Yingsi, ZHOU Shuyu, ZHANG Taihua
Science & Technology Review. 2017, 35 (15): 20-27. ;  doi: 10.3981/j.issn.1000-7857.2017.15.002
Full text: HTML PDF  (7093 KB)  ( 111 )
Abstract ( 243 )
Tethered aerostat systems are the very most important lighter-than-air vehicles in modern military applications. They have a number of advantages, such as wide coverage, long battery life, sustainable monitoring, low cost and so on. Besides, they have a better ability to survive than other aero craft in the sense of attack resistance and wind resistance. Tethered aerostat systems mainly perform uninterrupted ISR, communication relay and radar warning tasks. Some typical tethered balloon systems are also introduced, such as RAID, PGSS, PTDS, REAP, MARTS and JLENS. The stratosphere airships have potential value in military applications, but no countries have so far had mature engineering applications. In the near future, they will be the king of next generation of lighter-than-air craft in military applications.
Articles

TRIZ encounters with nanophotonics:Evolutionary trend to super system as an example

WANG Yongkai, ZHANG Wan, CAO Zhaoxia, ZHANG Zhongyue
Science & Technology Review. 2017, 35 (15): 45-50. ;  doi: 10.3981/j.issn.1000-7857.2017.15.006
Full text: HTML PDF  (3456 KB)  ( 90 )
Abstract ( 190 )
Theory of solutions of inventive problems, namely TRIZ in Russian, is an innovative method proposed by Russian scientists from innumerable patents. The evolutionary trend to a super system is the fundamental fact of the TRIZ innovating science and is successfully applied in the world leading enterprises. However, the evolutionary trend to a super system is hardly seen in the scientific research. In this paper, we introduce 4 subtrends of the evolutionary trend to a super system, which also exist in the scientific research in the cases of nanophotonics development. In addition, two examples are examined by using the 4 subtrends to design the nanophotonic devices. The one of examples is that we design the super system composed of rotary metal nanorods and metal nanoslits, by integrating inverse engineering systems, to realize the circular dichroism and the asymmetric transmission with the same strength grade. Another example is that we design the super system composed of rotary metal nanorods and metal films, by integrating heterogeneous engineering systems, to realize the indirect coupling effect in chirality.

Application of key technology changing bag filter to electrostatic precipitator in ultra-low emission upgrading projects of coal-fired power plants

FAN Xueming, WANG Lei, SANG Yuanyuan, WANG Shilong, HAN Ping, ZHENG Qinzhen, YAN Keping
Science & Technology Review. 2017, 35 (15): 51-56. ;  doi: 10.3981/j.issn.1000-7857.2017.15.007
Full text: HTML PDF  (1747 KB)  ( 108 )
Abstract ( 237 )
This paper presents a pioneer project of changing the bag-filter into colder-side electrostatic precipitator (ESP) for two 600 MW coal-fired boilers of Shanxi Luneng Hequ Power Plant for ultra-low emission of particle matters (PM) and sulfur dioxide (SO2) by cooperative optimization of colder-side ESP with three-phase power source and wet flue gas desulfurization (WFGD). Due to the coal-fired boiler condition and initial bag filter size, we change bag filter into ESP by taking ESP sizing, gas flow distribution optimizing, three-phase power source, etc. into consideration. The main result of this paper is when the ESP's specific collection area is 83.5 m2/(m3·s) with threephase rectifier transformer and the inlet ash load concentration is around 35.8 g/m3, the outlet particle mass concentration is 9.93~14.69 mg/m3, of which the mass concentration of particles with diameters of less than 2.5 μm is below 1.58 mg/m3. The integration of colder-side ESP with three-phase power source and WFGD can achieve ultra-low emissions of air pollutants for coal-fired power plants.

System and software platform of oil seismic exploration in big data era

XIE Wei, LIU Bin, LIU Xin, LI Yu, ZHAI Yansen
Science & Technology Review. 2017, 35 (15): 57-62. ;  doi: 10.3981/j.issn.1000-7857.2017.15.008
Full text: HTML PDF  (1246 KB)  ( 192 )
Abstract ( 598 )
Low-frequency vibrator, wide-band, wide-azimuth and high-density, high-efficiency acquisition technologies have been put into wide application thanks to the continual accuracy requirement of oil exploration and development. At the same time, oil seismic exploration has entered an era of big data, leading to a series of challenges of quality control, data processing, safety storage and management. For this reason, Sinopec has developed a "π -Frame seismic data processing and interpretation integration software platform" based on the Hadoop big data architecture. In this paper, we first introduce the characteristics of big data in oil seismic exploration. Then we describe the basic framework of the π-Frame platform. Finally we illustrate the application of big data in oil seismic exploration and prospect its potential developments.

Progress and prospect in supercritical adsorption of shale gas

ZHOU Shangwen, XUE Huaqing, GUO Wei, LI Xiaobo, LU Bin
Science & Technology Review. 2017, 35 (15): 63-69. ;  doi: 10.3981/j.issn.1000-7857.2017.15.009
Full text: HTML PDF  (1870 KB)  ( 139 )
Abstract ( 269 )
The supercritical adsorption is the adsorption of gas on the solid surface when the adsorption temperature is above the critical temperature. Under the condition of the shale gas reservoir, the adsorption of methane in the shale is the supercritical adsorption. The adsorbed gas is an important component of the total shale gas. Therefore, the study of the supercritical adsorption of shale gas is very important for the reserve evaluation and the development plan preparation of the shale gas reservoir. This paper reviews the research development of the supercritical adsorption of shale gas at home and abroad. It is shown that:1) compared to the coal, the methane adsorption capacity of the shale is very small. In order to meet the requirements of the shale adsorption test, pressure sensors with high accuracy in the volumetric adsorption apparatus are required, as well as an accurate magnetic suspension balance for the gravimetric adsorption apparatus; 2) the adsorption capacity measured by the isothermal adsorption experiment is the excess adsorption capacity, and the excess adsorption capacity will decline after reaching a certain pressure. So we should not confuse the excess adsorption with the absolute adsorption, which might cause the underestimation of the real adsorption capacity of the shale gas reservoir; 3) the shale gas adsorption is faced with the problem of discrepancy between theory and practice. In the future, the research of the shale gas supercritical adsorption should be conducted from two aspects:theory and experiment. We should focus on the understanding of the characteristics of the supercritical shale gas adsorption, to ultimately establish a universal and applicable theory of the shale gas supercritical adsorption and to guide practice and application.

Application of relevance vector machine to earthquake-induced landslide susceptibility assessment

QIU Dandan, NIU Ruiqing, Yang Yun
Science & Technology Review. 2017, 35 (15): 70-76. ;  doi: 10.3981/j.issn.1000-7857.2017.15.010
Full text: HTML PDF  (3510 KB)  ( 87 )
Abstract ( 211 )
The earthquake-induced landslide susceptibility assessment is one of the important parts in the researches of secondary disasters of earthquake. In view of the large amount of data, the rich information, the complex relationship, it is a very difficult task. This paper takes Lushan in the 2013 Lushan earthquake as the research area. Massive landslides were triggered by this earthquake. Among these landslides, 226 landslides are interpreted based on aerial photographs in Lushan, which are verified by the field investigation. Then 9 impact factors are selected by the Pearson correlation analysis, including the elevation, the slope, the aspect, the curvature classification, the slope structure, the lithology, the distance from drainages, the distance from faults, and the peak ground acceleration. The relevant vector machine(RVM) is a new learning procedure based on the statistical learning theory, and a genetic algorithm(GA) is adopted to optimize the parameter of the RVM. The proposed GA-RVM model is used to calculate the landslide susceptibility value, to produce susceptibility zoning. The statistical data of the susceptibility zoning are as follows:(1)the accuracy rate of the landslides is 99.74%; (2)the density of the landslides in a high susceptibility zoning is 27.4057 per square kilometers. The result shows that the relevant vector machine model is better than the support vector machine and is suitable for the earthquake-induced landslide susceptibility assessment and the earthquake disaster prevention.

On gravel soil slope stability and support modes against rainfall and earthquake

TAO Lianjin, REN Zhiguo, BIAN Jin, XU Qi
Science & Technology Review. 2017, 35 (15): 77-83. ;  doi: 10.3981/j.issn.1000-7857.2017.15.011
Full text: HTML PDF  (2694 KB)  ( 105 )
Abstract ( 294 )
The project is rested on the Sichuan highway slope on No.6 tenders from Wenchuan to Jiuzhaigou (the Chuanzhusi to Jiuzhaigou section). Through computer simulation with FLAC software and using horizontal displacement, plastic zone and slip as the evaluation indexes of slope instability, the stability for gravel soil slope of high altitude and high intensity is studied under rains effect and rains and earthquakes combined effect, respectively. Then a reasonable support mode is put forward accordingly. The research shows that the slippery surface of the slope caused by heavy rainfall mainly occurs at the interface between clay and crushed stone, and sliding surface is flat; so anchor frame beam support can ensure the slope stability. Moreover, the damage range of the slope will expand under the combined action of rainfall and earthquake, and an arc sliding surface about 12 meters deep will appear inside the slope and in the interface of clay and gravel soil. Composite anti-slide pile and anchor frame beam combination support can ensure the slope stability.
Focus

New oasis (2)——Application cases of deserticulture theory

TIAN Yuzhao
Science & Technology Review. 2017, 35 (15): 84-90. ;  doi: 10.3981/j.issn.1000-7857.2017.15.012
Full text: HTMLnew PDF  (8572 KB)  ( 35 )
Abstract ( 214 )
The deserticulture theory by Qian Xuesen is to transform deserts and Gobi deserts into oasis by utilization of advanced science and technology. This theory can be interpreted as"more lighting, less water-using, advanced technology and high profit". The 224 farm of Xinjiang Production and Construction Corps (XPCC) on the southwestern fringe of the Taklamakan desert, vineyards in the Gobi deserts of Jiayuguan, farmlands of controlled-environmental agriculture and greenhouses are all demonstrations of the deserticulture theory. Microalgae can be considered as an efficient solar power converter. Microalgae farms constructed in Engebei in Kubuqi desert, Jilantai in Ulanbuh desert and Otog Banner in Mu Us desert are chlorophyll factories. These factories produce high-quality nutriments in deserts. We will follow the path directed by Qian Xuesen and promote the productivity in the new oasis in the future.
Scientific Community Promotion

Science & Technology Review. 2017, 35 (15): 91-91.
Full text: HTMLnew PDF  (625 KB)  ( 73 )
Abstract ( 172 )
Scientists

Science & Technology Review. 2017, 35 (15): 94-94.
Full text: HTMLnew PDF  (498 KB)  ( 56 )
Abstract ( 218 )
Careers

Science & Technology Review. 2017, 35 (15): 95-95.
Full text: HTMLnew PDF  (412 KB)  ( 82 )
Abstract ( 166 )
Book Reviews

Science & Technology Review. 2017, 35 (15): 96-96.
Full text: HTMLnew PDF  (1105 KB)  ( 59 )
Abstract ( 152 )
Top News

Science & Technology Review. 2017, 35 (15): 5-6.
Full text: HTMLnew PDF  (1323 KB)  ( 43 )
Abstract ( 145 )
Voice of Scientific Community

Science & Technology Review. 2017, 35 (15): 8-8.
Full text: HTMLnew PDF  (827 KB)  ( 48 )
Abstract ( 131 )
Scientific Community

Science & Technology Review. 2017, 35 (15): 10-10.
Full text: HTMLnew PDF  (713 KB)  ( 44 )
Abstract ( 151 )

Copyright © Editorial office of Science & Technology Review
Tel: +86-10-62138113 Fax: +86-10-62138113 E-mail: jdbbjb@cast.org.cn
京ICP备14028469号-1