Current Issue

Previous Issue | Next Issue

November 15,2012
Volume 5,Issue 21
Pages -
Subject Area:Hydrology,Atmospheric Sciences,Cartography,Geology,Exploration Geophysics,Geodesy

Title: Isolation, chemical composition and antitumor activity in vitro of the acid polysaccharide isolated from Haliotis discus hannai

Authors: LI Guoyun, DU Lei, CHANG Yaoguang, XUE Yong, XUE Changhu, WANG Yuming
PP: 2104-2109
Abstract: A novel glycosaminoglycan-like abalone acid polysaccharide (AAP) from the pleopods of Haliotis discus hannai was purified by DEAE ion exchange chromatography followed with S-300 HR gel filtration chromatography. Chemical composition analysis indicated that AAP was composed of galactosamine, glucuronic acid, fucose, galactose with a ratio of 2.14∶2.37∶2.97∶1, the content of sulfate was 15.5%. The average molecular weight (MW) was 56.2 ku in a TSK G4000 column. The antitumor activity of the sulfated polysaccharide in vitro was detected by MTT assay. It was found that AAP had an obvious antitumor activity in a dose-dependent manner in vitro and the maximum inhibitory ratio of S180 and HEP-G2 were 52.5% (800 mg/L) and 48.9% (800 mg/L), respectively.
Keywords: aquatic products processing and storage; abalone; acid polysaccharide; isolation and purification; chemical composition; antitumor

Title: Study on fish protein hydrolysis technology of grass carp

Authors: SHI Wenzheng, WANG Xichang, HUANG Xiaoqin
PP: 2099-2103
Abstract: In this paper the optimum reaction of protamex was determined by orthogonal design. The parameters are as follows: the pH value is 6.5, the reaction temperature is 45℃, the added enzyme dosage is 0.5%, the weight ratio of meat to water is 1 to 1 and reaction time is 4 hours, the recovery of the protein was 92.63%. The optimum reactions of protamex and flavourzyme were also determined. Recovery of the protein can reach at 94.51%. The enzyme hydrolysates of fish protein often have more offending smell. It requires deodorization process. The results show the amounts of active carbon 4.0% or yeast 3.0% have much efficiency in deodorization process.
Keywords: aquatic products processing and storage; grass carp; enzyme hydrolysis; fish protein; deodorization

Title: Influence of the hot water on the derelopment of the karst collapse column in the Wutongzhuang coal mine area

Authors: FU Lei, CHENG Xuxue, LIU Weipo, SHA Na
PP: 2094-2098
Abstract: This paper introduces the Wutongzhuang’s hot water condition of the Fengfeng mining area, and analyses the influence of the hot water on the derelopment of the karst sinking column. Finally is the following understandings are proposed. The karst is formed on the basis of the mix building of carbonate and sulphate; The hot water source of Wutongzhuang coal mine is mainly the deep circulating hot water. Due to the underground heat, especially near igneous rock body, the dissolution speed of the limestone is fast, and the karst collapse column developes. This paper indicates that, the hot water conditions influence the karst collapse column mainly from three aspects: the convection which is caused by the geothermal anomaly, geochemical function and “chimney” effect.
Keywords: hydrology and water resources engineering; inner circulation of groundwater; hot water; karst collapse column; Wutongzhuang coal mine

Title: Application of coupling of Xinanjiang runoff generation model and improved BP flow concentration model

Authors: KAN Guangyuan, LI Zhijia, LIU Zhiyu, YAO Cheng, ZHOU Sai
PP: 2085-2093
Abstract: In order to improve the flow concentration accuracy of the Xinanjiang model meanwhile reduce the influences of experiential factors on calibration, a rainfall-runoff model named XBK (XAJ-BP-KNN) is proposed in this paper. In the XBK model, the runoff is calculated by the Xinanjiang runoff generation model, but the flow concentration module (runoff separation, linear reservoir and Muskingum routing method) of the Xinanjiang model is disused and the outlet flow is calculated by the improved BP flow concentration model. The BP flow concentration model uses BP neural network to simulate the nonlinear relationship of the flow concentration process, runoff calculated by the Xinanjiang runoff generation model and simulated antecedent outlet flow are the network inputs, outlet flow is the output. For the sake of simulating outlet flow continuously without using observed antecedent outlet flow and having a higher accuracy, the output of the network is corrected by adopting the similarity theory and the K-nearest neighbor algorithm, the historical samples’ simulation error and the corresponding impact factors are the inputs. A global optimization algorithm combined by the SCE-UA algorithm and the genetic early stopping LM algorithm is used to calibrate the model. The XBK model is applied to Chengcun watershed, the results indicate that the model has a higher accuracy than the Xinanjiang model, the global optimization algorithm can find the optimal parameter and the model is easy to use.
Keywords: hydrology; Xinanjiang model; artificial neural network; back propagation algorithm; K-nearest neighbor algorithm; SCE-UA algorithm

Title: Analysis of high levels of CO at Chongming in August 2010

Authors: HE Jingwei, WANG Yuxuan
PP: 2079-2084
Abstract: In this paper the variations of surface CO mixing ratios in August 2010 at Chongming, a remote rural site northeast of Shanghai founded by Tsinghua University, are analyzed. The results show that although the monthly mean concentrations of CO were low due to East Asia summer monsoon, high levels of CO pollution episodes occured during three time periods: 1-4, 12-17 and 28-30 August 2010. The correlation analysis of CO with meteorological parameters indicates that the subsidence flow associated with the West Pacific subtropical high and the stable layer associated with typhoon are the two meteorological causes of the high CO episodes. Sensitive simulations using the GEOS-Chem chemical transport model indicate that the high CO concentrations during 1-4 and 12-17 August 2010 originate from regional anthropogenic emissions in the Yangtze Delta region, while high CO levels during 28-30 August 2010 come from local emissions around Chongming. We conclude that abnormally high CO levels at Chongming in August 2010 are caused by the joint influence of anthropogenic emissions and favorable weather conditions.
Keywords: atmospheric sciences; CO mixing ratios; weather conditions; anthropogenic emissions; GEOS-Chem model

Title: Applications of rainfall spatial interpolation methods in Shiyang River basin

Authors: XING Zhao, MA Jinhui, ZHOU Wei, TANG Zhiguang
PP: 2074-2078
Abstract: The three spatial interpolation methods are applied to the rainfall spatial interpolation for the Shiyang River basin: ordinary Kriging, co-Kriging and inverse distance weighting (IDW). Their application results are compared and analyzed. For the co-Kriging method, the altitudes of the raingauges are considered to improve the interpolation results. The results show that, the interpolation errors of the 2 Kriging methods are much smaller than that of the IDW method. Also, the isohyet lines produced by the 2 Kriging methods are much smoother than that by the IDW method. For the 2 Kriging methods, the co-Kriging is superior than the ordinary Kriging, in the sense that. The reason for the IDW method being inferior than the 2 Kriging methods is that, the IDW method cannot take into account the spatial dependencies of adjacent raingauges in the basin. The reason of co-Kriging being superior than the ordinary Kriging is that the former taking into account of the topographic effects on rainfalls, therefore more suitable for mountainous river basins like ShiyangRiver.
Keywords: cartography; rainfall; spatial interpolation; ordinary Kriging; co-Kriging; inverse distance weighting

Title: Orebody plunging law and controlling factor of Jiaojia gold belt

Authors: LI Junying, LI Peiliang, ZHANG Hongxun, ZHAO Hai
PP: 2068-2073
Abstract: Based on gold deposit real data of Jiaojia gold belt of Shandong province, main orebody plunging law of Jiaojia gold belt was summarized, which towards NWW plunge jointly. The cause of plunge, deepening longer than extension and significance of plunging study were discussed. Main orebody of deposits of Jiaojia gold belt is controlled by the same stress field and intermediate principal axis of stress of ore stress field is main controlling factor of plunging and lateral trending. Physical geography survey line should be set according to plunging law and other occurrence characteristics of orebody.
Keywords: structural geology; plunging law; Jiaojia gold belt; Jiaojia pattern; hold structure; lateral trending; tectonic stress field

Title: Research on structure of Baibiguan well in Shanxi, Huoxi coal mine

Authors: XIA Xiangsheng, DENG Shengyang, YANG Zhaofang, SONG Jin
PP: 2063-2067
Abstract: This paper studied Baibiguan Well structure type and spatial distribution rules, and the formation of coalmine structure and development history of structural stress field. There are two groups of coalmine structure, one is compressional and torsional, which is mainly composted by faults and folds with the same strike direction. The other is three folds which are broom-like combination in central and southern of the mine, the axes of the folds are arcuate, roughly strikes in the direction of NNW-EW. In vertical, it is a combination of horst, graben and step. Since the late Paleozoic Era, the area is affected by the three periods of tectonic stress field. The first period (Permian Period to Triassic Period)-compressing in SN direction, resulting in the compressing EW tectonic belt and the tensile faults NNW. The second period (Late Triassic Period-Early Cretaceous Period), NWW-SEE compressing with a slight left lateral stress field developed, forming a set of NNE sinistral to reverse faults and fold. The third period (Cretaceous Period), under the action of the right couple, the NNE structure formed in the second period transformed to right to change normal faults, and led to the formation of a broom-like three folds.
Keywords: geology; mine structures; combination of features; causes; Baibiguan well

Title: Investigation and analysis on the cause of ground fissures in Shunyi district, Beijing

Authors: WANG Haigang, JIA Sanman, WANG Rong, JIANG Yuan
PP: 2055-2062
Abstract: The distribution of ground fissure in Shunyi is introduced in this paper. Ground fissures developed in Shunyi district mainly include Shunyi ground fissure, Gaoliying ground fissure, Yangfang ground fissure and Beixiaoying ground fissure. Ground fissures have resulted in the damage of houses, walls and roads, and they will develop in the future. The development of cracks in the deep and causes of ground fissures are analyzed and summarized based on the study on geological radar technique, exploratory trench and drilling.
Keywords: geology; Shunyi; ground fissure; active fault; investigation; cause

Title: Ascertainment and petrogenesis of Cenozoic Taxkorgan A-type granitoids in Pamir syntax

Authors: KE Shan
PP: 2045-2054
Abstract: Taxkorgan alkaline complex is confirmed to be A-type granitoids based on filed observation, petrography and geochemistry research of Kuzigan complex which is a representative pluton of Taxkorgan alkaline complex. Compared with typical world A-type granites, this complex has its own special characteristics, mainly controlled by its source rocks and melting conditions. Taxkorgan A-type granitoids were the product of partial melting of mafic eclogite at the base of the thickened crust, with no plagioclase in the source but garnet in the residue. Because of its special tectonic setting, this kind of A-type granitoids was not formed at the end of orogeny. It is a magmatic product induced by the regional extension during the orogenic process, such as large scaled strike-slip movement of the Karakorum fault.
Keywords: geology; Pamir syntax; Taxkorgan alkaline complex; Kuzigan complex; A-type granitoids

Title:

Authors:
PP:
Abstract:
Keywords:

Title: Application of seismic interpretation in the analysis of the thin coal seams’ thickness

Authors: AN Min, FANG Jiahu
PP: 2030-2036
Abstract: The measurement of the thickness of the coal-seam has become one of the most urgent problem needed to be addressed. However, the change of coal-seam thickness is a common geological phenomena in the coal mine, if the error of the prediction of the thickness is too large, it will cause a serious effect on the coal mine’s work. This paper summarized the existing methods of the prediction of the coal-seam thickness, and combined with the geological conditions of the specific region, found out the most suitable analysis method during the practical work.
Keywords: exploration geophysics; thin coal-seam; thickness prediction; reflection amplitude; wave impedance

Title: Determination of maximum horizontal outline of salt cavern based on AutoCAD

Authors: HUANG Faxing, LIU Zhidong, LIU Lihong
PP: 2024-2029
Abstract: In this paper, this kind of data is served as initial data and combined with programming language C# and AutoCAD platform, the algorithm of convex hell is realized to display the data and then commutate the maximum outline of horizontal section of salt cavern, and the result is proved feasible. Given in detail, firstly, the data structure of dat file is analyzed, then the deeper information is omitted to draw all the points in the same horizontal plane, then the convex hull algorithm is adopted to compute the points on the periphery in the data set. Finally the maximum horizontal outline is formed by connecting all those finding points together.
Keywords: geodesy; photogrammetry and remote sensing; salt cavern storage; AutoCAD; convex hull algorithm

Title: Review on watermark evaluating of GIS vector data

Authors: LI Anbo, LI Shasha, ZHOU Wei
PP: 2017-2023
Abstract: Based on summarizing the geographic information system (GIS) vector data watermarking characteristics, according to scholars’ digital watermarking evaluation research and application, this paper mainly reviewed the status and development trend of copyright mark evaluation research on GIS vector data products in current domestic and overseas. This study will help standardize the GIS vector data watermarking algorithm performance evaluation process, promote the optimization of vector data copyright protection algorithm, improve the theory and methods of geographic information security and copyright protection system, and promote the healthy development of the geographic information industry.
Keywords: geodesy; geographic information system; reviews; vector data; digital watermarking; performance evaluation; evaluation benchmark

Alert Name:
Alerting to:
Authentication email will be sent to your email address in 24 hours
Frequency:
Email Message Format:	Plain text Graphical(HTML)

Complete the form below and we will recommend the selected titles to your friends on your behalf. * Indicates a required field.
Your name*:
Your email address*:
Recipient's name*:
Recipient's email address*:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find the page(s) useful.

Your name:
Your email address:
Recipient's name:
Recipient's email address:
(multiple recipient's names and email addresses should be separated with semicolons)
Your comments:	I thought you would find this page useful.

Disclaimer: This message was sent to your friend using the "Send it to a friend" facility on the Sciencepaper Online’ WWW site, http://www.paper.edu.cn/en. The Sciencepaper Online is not responsible for the content of this email, and anything said in this email does not necessarily reflect the Sciencepaper Online's views.

	Check out RSS, or use RSS reader to subscribe this item