jgg

大地测量与地球动力学

	Home \| About Journal \| Editorial Board \| Submission Guidelines \| \| Open Access Statement \| \| Contact Us \| 中文

Submission Online

Manuscript
Tracking

Editorial Office

Editor-in-Chief

Online befor
Printed

Search

Current Issue

	2007 Vol.27 Issue.增刊 Published 2010-09-20

大地测量与地震研究

	1	VICISSITUDES OF GEODESY IN QING DYNASTY
		Zhang Chijun
		During the early Qing dynasty the geodetic work had been developed in an unprecedent scale becauce of the progress of geodesy in Europe and the emphasis on importing foreign survey talents and technologies by the authority.But it declined down gradually due to the decadent political institution and the despising of science and philosophy education.
		2007 Vol. 27 (增刊): 1-5 [Abstract] ( 1673 ) PDF (461 KB) ( 2712 )

	6	METHOD FOR IMPROVING ACCURACY OF SHORT BASELINE SURVEYING
		Wang Li;and Qi Wuai
		A surveying method which can be used for improving the relative accuracy of short baseline surveying is proposed. The research results show if the effect of angle measuring error is equal to or less than the effect of range finding error, then the proposed method can improve the relative accuracy of short baseline as much as 4-6 times.
		2007 Vol. 27 (增刊): 6-8 [Abstract] ( 1558 ) PDF (342 KB) ( 2570 )

	9	CONSTRUCTION OF SHANDONG GPS CRUSTAL MOVEMENT OBSERVATION NETWORK AND ANALYSIS OF PRIMARY RESULTS
		Li Jie;Yin Haitao;Zhang Ling;and Dong Xiaona
		Outlining the construction of Crustal Movement Observation Networks of Shandong and the basic methods for data processing,the primary results of the system are analyzed. It shows that the high precise threedimensional coordinate and baseline data can be provided by this system serving as favorable GPS data material for scientific research of earthquake monitoring and crustal movement.
		2007 Vol. 27 (增刊): 9-13 [Abstract] ( 2086 ) PDF (3018 KB) ( 3774 )

	14	ON AUTOMATIC INTERPRETATION OF FOCAL MECHANISMSOLUTIONS WITH COMPUTER
		Li Yin;Chen Junhua;Zhang Weihua;and Sun Lingli
		According to the basic principle of seismography and geology,drawing on the experimence of the earthquake predictors and the geologists and taking two microquakes in Badong area as examples,by use of the method of graphic recognition the automatic interpretation of focal mechanism solutions by computer in Visual Basic language is realized.The results show that the conclusion with this method is consistent with that with artificial method,and the former has more advantages such as higher accuracy, higher efficency.
		2007 Vol. 27 (增刊): 14-18 [Abstract] ( 2135 ) PDF (1251 KB) ( 3303 )

	19	ACTIVITY CHARACTERISTICS OF SANBANXI RESERVOIRINDUCED EARTHQUAKES IN GUIZHOU PROVINCE
		Zeng Xinping ;and Wang Mei
		The seismic activity characteristics of Sanbanxi Reservoir in Guizhou Province before and after water impoundment were analyzed and the genesis of the seismic activity in Sanbanxi Reservoir was discussed. The results show that there are two types of the seismic activity in the Sanbanxi Reservoir: the reservoirinduced tectonic earthquakes, and the earthquakes caused by the stress unloading on the crustal surface.
		2007 Vol. 27 (增刊): 19-23 [Abstract] ( 1768 ) PDF (1712 KB) ( 3609 )

	24	STUDY ON CHARACTERISTICS OF INTENSITY OF RESERVIOR-INDUCED EARTHQUAKE
		Kong Yuyang;Yao Yunsheng;and Li Gunaghong;
		By use of the intensity meterials of 27 reservoirinduced earthquakes in the world, the intensity attenuation laws of reservoirinduced earthquakes were investigated, and it is concluded that,in comparison with tectonic earthquake, the intensity of reservoirinduced earthquakes at low magnitude was higher than that of the tectonic earthquake. The large of the magnitude,the smaller of the difference between the intensities. In addition, reservoirinduced earthquakes have more characteristics such as shallower focus,quicker attenuation,and smaller influence area.
		2007 Vol. 27 (增刊): 24-27 [Abstract] ( 1716 ) PDF (1004 KB) ( 3526 )

	28	ON CHARACTERISTICS OF WAVE VELOCITY RATIO IN BADONG AREASINCE SECOND IMPOUNDMENT OF THREE GORGES RESERVOIR
		Chen Junhua;Wang Dun;Li Yin;and Xue Junrong
		The characteristics of wave velocity ratio of microearthquakes in Badong area since the second impoundment of Three Gorges reservoir are studied. The results show that the wave velocity ratio decreases before an earthquake and increases after the earthquake.The variations of wave velocity ratio reflect the microcrack failure and corrosion of the medium in the focal region caused by water before and after an earthquake.
		2007 Vol. 27 (增刊): 28-31 [Abstract] ( 1878 ) PDF (1427 KB) ( 2396 )

	32	ON MECHANISMS OF EARTHQUAKES OCCURRED INBADONG ALONGSHORE OF THREE GORGES RESERVOIR
		Wang Dun ;Wang Qiuliang ;Li Jinggang ;and Yuan Li
		The earthquake location and focal mechanism in the Three Gorges area show that the seismogenic stress of earthquakes occurred in the Badong alongshore, the Three Gorges area is caused by the impoundment of the Three Gorges reservoir. This result also agrees with previous numerical simulation. The gliding of shallow terrane triggered by water loading of the Three Gorges reservoir may be the main mechanism of this earthquakes.
		2007 Vol. 27 (增刊): 32-34 [Abstract] ( 1875 ) PDF (941 KB) ( 2805 )

	35	CHARACTERISTICS OF Q VALUE AND FOCUS PARAMETERS OF MICRO-EARTHQUAKE SWARM IN LUOQUANHUANG,ZIGUI
		Wu Haibo;Chen Junhua;Xue Junrong;and Luo Junqiu
		The Q value and focus parameters of the microearthquake swarm occured from Sept.22 to Dct.7,2007 in Luoquanhuang,Zigui were calculated with Mereu and Moya algorithm,respectively.The fitting relation between the Q and the frequency was Q(f)=71.7 f ^0.808 .Comparison with the low background Q values before and after impondment in the region of Three Gorges Reservoir it indicated that this microearthquake swarm was a common stress adjustment event in the crustal midea.
		2007 Vol. 27 (增刊): 35-38 [Abstract] ( 2099 ) PDF (956 KB) ( 3546 )

	39	SEISMOLOGICAL APPLICATION OF MONTHLY GRAVITY FIELD MODELS OF GRACE
		Zou Zhengbo;Xu Rugang;Li Hui;Kang Kaixuan ;and Zhou Xin;
		The development of SAT. GRACE was introduced.According to the requiement of mediumlongterm prediction of strong earthquake the highest order of satellite gravity field model was trancated and then,by use of the monthly gravity field model the gravity changes were computed and some meaningful results were obtained.
		2007 Vol. 27 (增刊): 39-41 [Abstract] ( 1721 ) PDF (1345 KB) ( 3266 )

	42	RESEARCH ON ANOMALOUS SEISMICITY BEFORE JIUJIANG-RUICHANG EARTHQUAKE
		Sun Lingli;Xue Junrong;Li Ying;and Chen Junhua
		There were 8 seismic parameters i.e. earthquake frequencyN(ML≥2.0),b-value,η-value,A(b)-value,Mf-value,Ac-value,C-value and D-value be used to reflect seismic activity characteristics in time, space and magnitude. Applying the factor analysis method variations of all these parameters since 1980 were studied before the Jiujiang M5.7 earthquake occurred on Nov.26,2005 in Jiangxi province and the synthetic parameter W _favalue,major effective factors and certain correlation among these parameters were picked out.It showed that the camulative contribution rate of the four former factors reached to 95.14% totally. Being the four major effect factors,their contribution rate were 50.53%,23.50%,16.79% and 4.33% respectively.
		2007 Vol. 27 (增刊): 42-46 [Abstract] ( 1827 ) PDF (1226 KB) ( 2408 )

	47	ON CALCULATION METHODS FOR GEOCENTER MOTION WITH SLR
		Li Xin;Guo Tangyong;Zhang Nian;Luo Tiantian;Wang Peiyuan;and Zou Tong;
		Three methods for calculation of geocenter motion are intruduced.
		2007 Vol. 27 (增刊): 47-48 [Abstract] ( 1421 ) PDF (1357 KB) ( 3123 )

	49	ON GRAVITY REDUCTION
		Li Zhiyuan ;Xing Lelin;Xiao Liangming ;and Jiang Shenghua
		In this paper we have explained the physical mechanism of gravity reduction in the view of constructing the reference earth model. Through the comparison of different models, the conclusion can be drawn that the inhomogeneous of mass distribution of earth interior should be taken into account and the accuracy of lateral density should reach 0.001 g/cm ³ when determining a cmlevel geoid.
		2007 Vol. 27 (增刊): 49-52 [Abstract] ( 1544 ) PDF (479 KB) ( 3383 )

	53	APPLICATION OF GPS DATA TO INVESTIGATE MAGNETIC STORM IN DECEMBER,2006
		Zhang Yimei ;Du Ruilin ;Liang Xiaoxi ;and Tian Yongming
		With the data of GPS network of Chinese mainland，and the IGS data of stations in adjacent areas,the impact of the magnetic storm curred in midDecember,2006 on the ionosphere above China mainland was investigated.It showed the magnetic storm had affected insignificantly.
		2007 Vol. 27 (增刊): 53-57 [Abstract] ( 1729 ) PDF (2841 KB) ( 2779 )

	58	APPLICATION OF GPS TO GEOGRAPHICAL AZIMUTH ORIENTATING OF SEISMIC INSTRUMENTS
		Zhang Yi;Gu Chunlei;Wang Lei;Xu Ruogang;and Li Zhiping
		The application of GPS to orient the northern azimuth of digital seismograph was described.Experiment showed that the accuracy was better than 2′ and meet the requirement of less than 6′ for a seismograph.
		2007 Vol. 27 (增刊): 58-59 [Abstract] ( 1729 ) PDF (511 KB) ( 3413 )

	60	CHARACTERISTIC RESPONSE OF CONCRETE GRAVITY DAM TO DEMOLITION EARTHQUAKE WAVE
		Liu Wenqing ;Huang Zhong ;and Chen Lifeng
		The spectrum, acceleration, speed and power magnification in threedimensional space of the demolition earthquake wave from the cofferdam broken of the right bank of a great dam are studied,and the characteristic responses of different height,different direction and different medium of concrete gravity dam to the demolition earthquake waves are obtained.
		2007 Vol. 27 (增刊): 60-63 [Abstract] ( 1624 ) PDF (621 KB) ( 2581 )

	64	DEVELOPMENT OF LOSS ANALYSIS SYSTEM FOR LOCAL EARTHQUAKE AND GEOLOGICAL DISASTER
		Li Heng;Wei Guichun;Te Muqile;and Wang Dun
		The method to develop loss analysis system for local earthquake and geological disaster based upon geographic information system (GIS) were introduced. The demands for different users were considered.The accuracy of collected data was adjustable to suit for different economic levels and a group of function modules were designed to simulate the effect of disaster reduction. The building damage model based on the response spectrum in the system was developed, the soil vibration effect was considered as well.
		2007 Vol. 27 (增刊): 64-66 [Abstract] ( 1768 ) PDF (503 KB) ( 2512 )

	67	APPLICATION OF GIS FOR ANALYZING LANDSLIDE STABILITY
		Li Yin ;Su Kai ; and Li Jie
		With OLE Automation, MapInfo can be used as an object type. Combined with the functions of spatial analyses and data management in GIS, the secondary development technique on MapInfo was adopted. This system had the function of statistics, analysis and prediction of landslide.The local comprehensive decision standard of landslide stability was also built. By a friendly manmachine interactive interface, it was able to offer the stability analysis and the comprehensive estimate of landslide caused by earthquake.It improved the operability and the transmitting capacity of the spatial geographical information.
		2007 Vol. 27 (增刊): 67-70 [Abstract] ( 1970 ) PDF (915 KB) ( 3057 )

	71	ANALYSIS ON EFFECT OF SHOCK ABSORPTION OF RIBRATION-ISOLATED OF MULTI-STORY BUILDING BASE
		Lei Jingya;Wang Fang ;Luo Denggui;and He Tao;
		The principle and two calculating models of the baseisolated structure are introduced. Through a project example, the acceleration and the displacement response of top layer of a building with and without the baseisolated are simultaneously calculated with the Matlab time history analysis program. The computed results indicate that the baseisolated system used in the multistory building may effectively reduce the earthquake response of the structure.
		2007 Vol. 27 (增刊): 71-73 [Abstract] ( 1682 ) PDF (1173 KB) ( 3265 )

	74	REVIEW OF SEISMOLOGICAL RESEARCH IN IRAN ANDPROSPECT OF COOPERATION BETWEEN CHINA AND IRAN
		Zhou Yunyao ;Yao Yunsheng;Wang Dun;Zheng Shuiming ;and Liu Hangang
		After visiting several seismic networks and seismic institutes of Iran, we have acquired knowledge on Iran earthquake research. Furthermore, we prospect the technical cooperation of earthquake between China and Iran.
		2007 Vol. 27 (增刊): 74-76 [Abstract] ( 1496 ) PDF (961 KB) ( 3614 )

	77	INVESTIGATION ON EARTHQUAKE SCIENCE KNOWLEDGE OF GRADUATES FROM JUNIOR MIDDLE SCHOOL IN WUHAN CITY
		Zhang Jinjin
		In order to find out the level that graduates from junior middle school in Wuhan City mastered the popular knowledge about earthquake science,we designed some examination papers about earthquake knowledge and distributed them to 100 graduates for onsite investigation.The results are as follows:4% of the graduates got “good”,18% got“middle” and 78% got the “bad”.The situation makes us worried,so we should strengthen the eduation about the earthquake knowledge for the middle school students to rise the consciousness of the whole people to take precautions against earthquakes and decrease the disasters.
		2007 Vol. 27 (增刊): 77-79 [Abstract] ( 1717 ) PDF (416 KB) ( 2347 )

	80	THINKING BACK OF JIUJIANG-RUICHANG EARTHQUAKE
		Li Aiping

		2007 Vol. 27 (增刊): 80-81 [Abstract] ( 1339 ) PDF (333 KB) ( 2138 )

	82	Salt extrusion at Kuh-e-Jahani,Iran,from June 1994 to November 1997
		Jin Wenzheng

		2007 Vol. 27 (增刊): 82-86 [Abstract] ( 1902 ) PDF (2949 KB) ( 2087 )

观测技术

	87	OPTIMAL DESIGN OF DIGITAL EXTRACTION FILTER WITH DSP
		Tan Yaoyin;Liao Chengwang;Deng Tao;Zhao Fenghua;Ding Wei;and Chen Weiming;
		Digital Signal Processor (DSP) is used as a digital decimation filter to lower the cost and power consumption of earthquake data acquisition system. The program is optimized after the lookup table method, reverse circular traversal method and circular addressing simulation method to implement fourstage and fourchannel filtering under low operating frequency,so as to meet practical requirement.
		2007 Vol. 27 (增刊): 87-90 [Abstract] ( 1630 ) PDF (1004 KB) ( 4057 )

	91	SOFTWARE DESIGN OF SEISMIC INSTRUMENT SYSTEM(KIS)
		Zou Tong;Guo Tangyong;Zhou Yunyao;Chen Zhigao;Lin Hui;Wang Peiyuan;and Li Xin
		The perfermance of earthquake instrument system KIS and the composition of its software were introduced,and problems of software design and the development trend of the software were discussed.
		2007 Vol. 27 (增刊): 91-93 [Abstract] ( 1673 ) PDF (475 KB) ( 2909 )

	94	RESEARCH AND ACCOMPLISHMENT OF GPS ASSISTED WITHTIME-FREQUENCY DATUM OF HIGH PRECISION
		Wang Peiyuan;Tan Yechun;Guo Tangyong;Zou Tong;Li Xin;and Shen Jilin
		A time and frequency reference based on voltagecontrolled oscillator and GPS technique is introduced.By use of it the programmable pulse and frequency output can be realized, and the longterm stability and shortterm stability of this reference will be fine.
		2007 Vol. 27 (增刊): 94-95 [Abstract] ( 1709 ) PDF (603 KB) ( 3241 )

	96	APPLICATION OF FPGA IN TIME MEASUREMENT
		Zhu Wei ;Guo Tangyong ;and Li Zhulian;
		Using the resource of field programmable gate arrays(FPGA) ,the time interval measurement system of high accuracy is designed under the FPGA.
		2007 Vol. 27 (增刊): 96-100 [Abstract] ( 1489 ) PDF (1578 KB) ( 4013 )

	101	VERNIER EVENT TIMER
		Li Zhulian;Guo Tangyong;Xiong Yaoheng ;and Zhu Wei;
		According to the principle of Vernier Event Timer, a design scheme based on FPGA technique was given and the difficulties in the implement of this timer was analyzed.
		2007 Vol. 27 (增刊): 101-102 [Abstract] ( 1651 ) PDF (528 KB) ( 3571 )

	103	METHODS FOR AVOIDING METASTABILITY OF ASYNCHRONIZATION
		Ding Wei;Liao Chengwang;Deng Tao;and Tan Yaoyin;
		Based on a novel asynchronous compared method the emptyfull flags of the FIFO were generated, achieving the flag and clock synchronization by using latches. The related Verilog HDL codes were also illustrated.
		2007 Vol. 27 (增刊): 103-105 [Abstract] ( 1552 ) PDF (665 KB) ( 5352 )

	106	TEMPERATURE-CONTROL SYSTEM BASED ON SINGLE WIRE BUS TECHNIQUE
		Zhang Mingyang;and Guo Tangyong
		The characteristic of the single wire bus was introduced, and the temperature control system based on this technique was designed by use of the SingleChip Microcomputer C8051F330.
		2007 Vol. 27 (增刊): 106-109 [Abstract] ( 1516 ) PDF (808 KB) ( 3245 )

	110	DIGITIZED SYNTHETIC OBSERVATION SYSTEMOF DYNAMIC STATE OF GROUND WATER
		Li Jiaming;Yao Yunsheng;Mei Jianchang;and Zhang Weihua;
		For overcomming the disadvantages of the existent subsurface fluids observation instrument,such as singleress,fault rate of cable decentralized structure, instability, many breakdown, high power consumption, high operating costs, high communications network troubles, vulnerable to be damages by lightning, the integration of digital groundwater dynamic observation system was designed, and the composition and the basic operational principle of this system was described issued.
		2007 Vol. 27 (增刊): 110-114 [Abstract] ( 1656 ) PDF (954 KB) ( 3258 )

	115	PROBLEMS IN PORTABLE LASER RANGEFINDER DESIGN
		Xia Jiening;Zhao Fenghua;Wu Tao;and LI Ying
		After introducing the design idea of classical laser rangefinder,the following related problems were described,such as the choice of laser source for the eyesafety,the selection of photoelectric detector and the design of receiving preamplification circuit,the design of optic system,the analysis of noise,and the like.
		2007 Vol. 27 (增刊): 115-118 [Abstract] ( 2342 ) PDF (794 KB) ( 4462 )

	119	PRESSURE RESISTANT CALCULATION OF SEALED VESSEL IN DEEP WELL
		Li Cuixia;Cai Qingfu;and Li Shude
		According to the theory of classical and modern mechanics of materials, the pressureresistant property of sealed vessel installed in deep well was analyzed and calculated and the necessary materials to be used in this scientific work was primarily selected and the minimum wall thickness of the vessel under a certain safety factor was determined.
		2007 Vol. 27 (增刊): 119-121 [Abstract] ( 1520 ) PDF (562 KB) ( 3938 )

	122	DEVELOPMENT AND APPLICATION OF ATOMIC CLOCK
		Shen Jiling;Guo Tangyong;and Wang Peiyuan;
		The principle, development status and application of atomic clocks were introduced and their main functions were compared with each other.
		2007 Vol. 27 (增刊): 122-125 [Abstract] ( 1559 ) PDF (613 KB) ( 7100 )

	126	DESIGN OF SMALL-SIZED WIRELESS DATATRANSMISSION SYSTEM BASED ON MSP430
		Ma Wugang;and Hu Guoqing
		On the basis of lowerpower MCU MSP430,combining with the 24bit analogtodigital(A/D)converters chip and the wireless module PTR8000, the design scheme of wireless transmission system including software and hardware is introduced.
		2007 Vol. 27 (增刊): 126-129 [Abstract] ( 1608 ) PDF (1316 KB) ( 3307 )

	130	DESIGN OF A HIGH PRECISION TILTOMETER
		Yang Jian;Hu Guoqing;and Wu Yanxia
		A high precision tiltometer for project monitoring was introduced. The test results showed that this high precision tiltometer achieved the design goals and meeted the requirements of project monitoring.
		2007 Vol. 27 (增刊): 130-132 [Abstract] ( 1651 ) PDF (1051 KB) ( 2460 )

	133	DESIGN OF EFFECTIVE MULTI-CASCADE EXTRACTIONFILTER IN MATLAB ENVIRONMENT
		Zhao Fenghua;Liao Chengwang;Xia Jiening;and Tan Yaoyin
		How to design the CIC(cascade integrator comb) filter,halfband filter and FIR(finite impulse response) filter by use of Matlab was described and a high effective multicascade decimated filter was designed.The test result showed that this kind of filter can meet the seismic data acquisiting system’s accuracy demands.
		2007 Vol. 27 (增刊): 133-136 [Abstract] ( 2341 ) PDF (0 KB) ( 469 )

	137	APPLICATION OF C8051F330 TO EARTHQUAKE OBSERVATION SYSTEM
		Lin Hui ;Guo Tangyong;and Zou Tong;
		The principle of malfunction alarm subsystem is introduced,in which the C8051F330 is used as system controller. Especially,the problems concerning temperature alarm in this design are analyzed.
		2007 Vol. 27 (增刊): 137-139 [Abstract] ( 1701 ) PDF (1093 KB) ( 3628 )

	140	DESIGN AND IMPLEMENTATION OF OFDM \=[JZ] BASEBAND PROCESSING SYSTEM
		Wang Hao
		The principle of a modulation method for the highspeed wireless data transmission and the implement of modulation and demodulation in FFT were described. The hardware design and its structure diagram of baseband processing system were given.
		2007 Vol. 27 (增刊): 140-142 [Abstract] ( 1530 ) PDF (855 KB) ( 4260 )

	143	TECHNICAL RESEARCH ABOUT DETECTION OF GRATING DISTANCE AND SUBDIVISION OF LINEAR CCD
		Yang Boxiong;Zhou Yunyao;Liu Haibo;Chen Zhigao;Ou Tonggeng;and Zheng Yong
		A new technique of subdividing the Moire fringes to measure the interval between grating lines was adopted in large scale, with the characteristics of high resolution and evendistributed pixels of linear CCD. The circuit was also simplified since the subdividing and digitizing functions were completed by CCD simultaneously. Moreover, the subdividing multiple was so high and up to thousands of times.
		2007 Vol. 27 (增刊): 143-145 [Abstract] ( 1661 ) PDF (435 KB) ( 3287 )

	146	POWER SPECTRUM ESTIMATION OF SIGNAL OF DIFFERENTIAL EXTENSOMETER
		Yang Jiang;Xu Chunyang;and Lu Chongwu
		The method for estimating the signal power spectrum is introduced and the estimation of power spectrum of the signal data of differential extensometer recorded in Wuhan station for three months has been made.It shows that differential structure can improve significantly the antiinterference capability of extensometers and increase the SNR of output signals.
		2007 Vol. 27 (增刊): 146-148 [Abstract] ( 1629 ) PDF (1573 KB) ( 2687 )

	149	DESIGN OF CW-JS FLOATING-HEAD-LESS TELEMETRY STATIC LEVELLER
		Li Nongfa;Cai Qingfu;Wang Guodong;and Song Xiao
		The design of CWJS floatingheadless telemetry static leveller is described and some resolutions for the possible problems are put forward.
		2007 Vol. 27 (增刊): 149-150 [Abstract] ( 1478 ) PDF (457 KB) ( 2392 )

	151	ANALYSIS OF CURRENT SITUATION OF IRAN SEISMIC NETWORKS
		Zhou Yunyao;Yao Yunsheng;Wang Dun;Zheng Shuiming ;Liu Hangang ;and Wu Tao;
		Through the mutual intercourse, we have investigated Iran seismic networks. Iran held four kinds of networks， they are Iranian Seismic Telemetry Network, Iran National Seismic Network, Iran accelerator network and Iran RIS seismograph network. Because of the lack of broadband seismeter in these networks, the accuracy of earthquake location isn’t high. Besides, the four kinds of networks are administrated by different organs,thus it limits the earthquake monitering ability of Iran in some way.
		2007 Vol. 27 (增刊): 151-155 [Abstract] ( 2145 ) PDF (1357 KB) ( 3311 )

·

·

·

·

·

·

More...

·

·

·

·

·

·

More...

Copyright © 2013 Editorial office of jgg
Supported by: Beijing Magtech