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| 1 | Development of Finite Element Limiting Analysis Method and Its Applications in Geotechnical Engineering显示文摘The Finite Element Limiting Analysis Method(LELAM) has the advantage of combining a numerical analysis method with traditional limiting equilibrium methods.It is particularly applicable to the analysis and design of geotechnical engineering.In the early 20th century,FELAM has been developed vigorously in domestic geotechnical engineering over international common finite element procedures.It has made great achievements in basic theory research and computational precision,thus broadening the application fields in practical projects.In order to gradually make innovations in geotechnical design methods,some of our research results are presented,mainly including geotechnical safety factor definitions,the principles for use of the method concerned,the overall failure criterion,the deduction and selection of the yield criterion,and the measurement to improve the computational precision,etc..The application field has been broadened from two-dimensional to three-dimensional,from soil slope to jointed rock slope and foundation,from stable seepage to non-stable seepage,from slope and foundation to tunnel.This method has also been used in search of many hidden sliding surfaces of complex landslides,conducting the structural support design considering the interaction between the soil and the structure,and computing simulation foundation bearing plates load tests,etc.. | Zheng Yingren1,Deng Chujian1,Zhao Shangyi1,Tang Xiangsong1,Liu Mingwei1,Zhang Liming2(1 Department of Civil Engineering,Logistical Engineering University,Chongqing 400041,China 2 Department of Science and Information Engineering,Qingdao Technological University,Qingdao 266033,China) | 2007 | 工程科学(英文版)2007，5，3： | 27 |
| 2 | Zircon SHRIMP U-Pb geochronology and petrogenesis of the plagiogranites from the Lagkor Lake ophiolite,Gerze,Tibet,China显示文摘地关系与 petrographical 一起, petrological ,和 geochemicalcharacteristics ,和锆石人口,显示从在 Bangong-Nujiang 缝术地区的 Lagkor Lakeophiolite 的 plagiogranites (~ Gerze 县的 20 km 南方,中央西藏,中国),由在海洋的外壳的运输期间的可锻的砍源于含水的斑粝岩的 anatexis 。因此,这种 plagiogranite 比传播海洋的外壳晚对或很少同时代。锆石虾 166 ±使 2.5 妈变老因为 plagiogranites 显示海洋的盆在中间的侏罗记在 Bangong-Nujiang 地区的西方的部分存在。 | ZHANG YuXiu1,2, ZHANG KaiJun1,3, LI Bing1,2, WANG Yang1,2, WEI QingGuo1,2 & TANG XianChun1,2 1 Key Laboratory of Marginal Sea Geology, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 2 Graduate University, Chinese Academy of Sciences, Beijing 100039, China 3 Department of Earth Sciences, Nanjing University, Nanjing 210093, China | 2007 | Chinese Science Bulletin2007，52，5： | 27 |
| 3 | Extended multivariate public key cryptosystems with secure encryption function显示文摘Advances in quantum computers pose great threats on the currently used public key cryptographic algorithms such as RSA and ECC. As a promising candidate secure against attackers equipped with quantum computational power, multivariate public key cryptosystems (MPKCs) have attracted increasing attention in recently years. Unfortunately, the existing MPKCs can only be used as a multivariate signature scheme, and it remains unknown how to construct an efficient MPKC enabling secure encryption. Furthermore, some multivariate signature schemes have been shown insecure in recent years, and it is also not trivial to build MPKC which can serve as a secure signature scheme. By employing the basic MQ-trapdoors, this paper proposes a novel MPKC and shows how it can be used as a multivariate signature scheme and a multivariate encryption scheme, respectively. The goal is achieved by incorporating our new hash authentication techniques and some modification methods such as the Shamir's minus method. Thorough analysis shows that our schemes are secure and efficient. Our MPKC gives a positive response to the challenges in multivariate public key cryptography. | WANG HouZhen 1,2 , ZHANG HuanGuo 1,2 , WANG ZhangYi 1,2 & TANG Ming 1,2 1 The Key Laboratory of Aerospace Information Security and Trusted Computing, Ministry of Education, School of Computer, Wuhan University, Wuhan 430079, China 2 State Key Laboratory of Software Engineering, Wuhan University, Wuhan 430072, China | 2011 | Science China(Information Sciences)2011，54，6： | 26 |
| 4 | Plasmacytoid dendritic cells in antiviral immunity and autoimmunity显示文摘Plasmacytoid dendritic cells (pDCs) represent a unique and crucial immune cell population capable of producing large amounts of type I interferons (IFNs) in response to viral infection.The function of pDCs as the professional type I IFN-producing cells is linked to their selective expression of Toll-like receptor 7 (TLR7) and TLR9,which sense viral nucleic acids within the endosomal compartments.Type I IFNs produced by pDCs not only directly inhibit viral replication but also play an essential role in linking the innate and adaptive immune system.The aberrant activation of pDCs by self nucleic acids through TLR signaling and the ongoing production of type I IFNs do occur in some autoimmune diseases.Therefore,pDC may serve as an attractive target for therapeutic manipulations of the immune system to treat viral infectious diseases and autoimmune diseases. | TANG Fei1,2,DU Qiumei1,2 & LIU Yong-Jun3 1 Center for Infection and Immunity,Institute of Biophysics,Chinese Academy of Sciences,Beijing 100101,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3 Department of Immunology and Center for Cancer Immunology Research,University of Texas,M.D.Anderson Cancer Center,Houston,Texas 77030,USA | 2010 | Science China(Life Sciences)2010，53，2： | 23 |
| 5 | Study of ozone “weekend effect” in Shanghai显示文摘Analysis of observed ozone data in 2006 from five monitoring sites (Xujiahui, Chongming, Baoshan, Pudong, Jinshan) in Shanghai reveals that ozone (O_3) concentrations in Xujiahui are higher at week-ends than those on weekdays, despite the fact that emissions of ozone precursor substances, such as oxides of nitrogen (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs) are lower at weekends than those on weekdays. The possible chemical cause of ozone 'weekend effect' is that NO_2/NO ratio increases at weekends by 25.61% compared with those on weekdays. In addition, because of an average 12.13% reduction in NOx (NO + NO_2) in the early morning (05:00-09:00) at weekends compared with that on weekdays, the ozone inhibition period ends 0.5 h earlier at weekends resulting in the longer duration of ozone accumulation and the higher ozone production rate. The rate of ozone production is a function of VOCs and NOx in the atmosphere. VOCs/NOx ratio in Xujiahui is 4.55 at weekends, and 4.37 on weekdays, belonging to the 'NOx-limited'. The increasing VOCs/NOx ratio at weekends leads to ozone enhancement from 73 ppbv to 80 ppbv, which are consistent with ozone 'weekend effect' in Xujiahui. Furthermore, combining with MICAPS cloud amount data, the fact that ozone 'weekend effect' in Xujiahui weakens gradually along with the increasing of cloud amount indicates that ozone photochemical production leads to ozone 'weekend effect' in Xujiahui of Shanghai. | TANG WenYuan1↑, ZHAO ChunSheng1, GENG FuHai1,2, PENG Li2, ZHOU GuangQiang2, GAO Wei2, XU JianMing2 & TIE XueXi2,3 1 Department of Atmospheric Science, School of Physics, Peking University, Beijing 100871, China 2 Atmospheric Chemistry Laboratory of Shanghai Meteorological Bureau, Shanghai 200030, China 3 Atmospheric Chemistry Division, NCAR, Boulder CO 80301, USA | 2008 | Science China Earth Sciences2008，51，9： | 23 |
| 6 | p16 gene methylation in colorectal cancers associated with Duke's staging显示文摘AIM To explore the association of methylation of the CpG island in the promotor of the p16 tumor suppressor gene with the clinicopathological characteristics of the colorectal cancers.``METHODS Methylation-specific PCR (MSP) was used to detect p16 methylation of 62 sporadic colorectal cancer specimens.``RESULTS pi6 methylation was detected in 42% of the tumors. Dukes staging was associated with p16methylation status, p16 methylation occurred more frequently in Dukes C and D patients (75.9%) than in Dukes A and B patients (12.1%).``CONCLUSION p16 rnethylation plays a role in the carcinogenesis of a subset of colorectal cancer, and it might be linked to poor prognosis. | Jing Yi~1 Zhi-Wei Wang~1 Hui Cang~1 Yu-Ying Chen~1 Ren Zhao~2 Bao-Ming Yu~2 Xue-Ming Tang~1 1 Department of Cell Biology,2 Department of Surgery,Ruijin Hospital,Shanghai Second Medical University,Shanghai 200025,China | 2001 | World Journal of Gastroenterology2001，7，5： | 21 |
| 7 | Eclogites in the interior of the Tibetan Plateau and their geodynamic implications显示文摘Eclogites have been recently reported in the interior of the Tibetan Plateau, including in the central Qiangtang metamorphic belt, in the Basu metamorphic massif of the eastern Bangong-Nujiang suture zone, and at Songdo and Pengco in the eastern Lhasa terrane. Some typical ultrahigh-pressure (UHP) metamorphic phenomena, e.g., garnet exsolution from clinopyroxene, were documented in the Basu and Pengco eclogites. The UHP metamorphism in the interior of the Tibetan Plateau marked by these eclogites generally took place in the Early Mesozoic. Along with exhumation of these eclogites, (post-) collision-related magmatism extensively occurred around the central Qiangtang belt, the eastern Ban-gong-Nujiang suture zone, and the eastern Lhasa terrane. The occurrence of these Early Mesozoic ec-logites manifests an out-of-sequence evolution of the Tethys, and they could be a product of diachro-nous collision between the eastern Qiangtang terrane and the irregular continental margin of the united western Qiangtang-Lhasa plate, along the linked eastern Bangong-Nujiang-central Qiangtang zone. The collision-related magmatic rocks could have been originated from lithospheric thickening, melting, or detachment due to the collision. The presence of UHP metamorphic rocks in central Qiangtang and Basu implies likely continental deep-subduction, and the denudation of these two metamorphic zones could have served as the source of the Triassic turbidites in the Songpan-Garzê complex and the Ju-rassic turbidites in the western Bangong-Nujiang zone, respectively. However, studies of the eclogites in the interior of the Tibetan Plateau just began, and many principal aspects still remain to be explored, such as their distributions, typical lithologies and minerals, temperature-pressure conditions, timing of formation and exhumation, protoliths and tectonic setting, and relationship with the evolution of the Tethys and large-scale basins in Tibet. | ZHANG KaiJun1,2 & TANG XianChun2,3 1 Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China 3 Graduate University of Chinese Academy of Sciences, Beijing 100049, China | 2009 | Chinese Science Bulletin2009，54，15： | 20 |
| 8 | Multi-level decollement zones and detachment deformation of Longmenshan thrust belt,Sichuan Basin,southwest China显示文摘As is well known that many decollement layers were developed in the Longmenshan thrust belt,Si-chuan Basin,China. Through field investigation,explanation of seismic profiles and analysis of the balanced sections,we can divide the decollement zones into 3 categories: (1) the deep level decolle-ment zones,including the crust-mantle decollement layer,intracrustal decollement layer,and presinian basal decollement layer. The main structural styles of their deformation are the crust-mantle decoup-ling detachment deformation,the basal ductile shear deformation,etc.; (2) the middle level decollement zones,including the Cambrian-Ordovician decollement layer,the Silurian decollement layer,etc.,the main structural styles of their deformation are the isopachous fold,the angular fold,the saddle struc-ture,and the combination styles of them; and (3) the shallow level decollement zones,including the Xujiahe Formation decollement layer of Upper Triassic and the Jurassic decollement layers,the main structural styles of their deformation are the thrust-nappe tectonic,the pop-up,the triangle zone ,the duplex,etc. Multi-level decollement zones not only made the Longmenshan thrust belt develop many different deformation styles from deep place to shallow place,but also made some local areas have the superimposition of the tectonic deformation apparently. This study indicates that the multi-level de-collement zones have a very important effect on the shaping and evolution of the Longmenshan thrust belt. | TANG LiangJie1,2,3,YANG KeMing4,JIN WenZheng1,2,3,L ZhiZhou4 & YU YiXin1,2,3 1 State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China 2 Key Laboratory for Hydrocarbon Accumulation Mechanism,China University of Petroleum,Ministry of Education,Beijing 102249,China 3 Basin and Reservoir Research Center,China University of Petroleum,Beijing 102249,China 4 Southwest Division Company,SINOPEC,Chengdu 610081,China | 2008 | Science China Earth Sciences2008，51，S2： | 18 |
| 9 | Influence of stacking fault energy on formation of long period stacking ordered structures in Mg-Zn-Y-Zr alloys | Fu-sheng PAN~(1,2),Su-qin LUO~1,Ai-tao TANG~(1,2),Jian PENG~(1,2),Yun LU~3 1.College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China 2.National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China 3.Faculty of Engineering,Chiba University,Chiba 263-8522,Japan | 2011 | Progress in Natural Science:Materials International2011，21，6： | 17 |
| 10 | Regulation of salt and ABA responses by CIPK14, a calcium sensor interacting protein kinase in Arabidopsis显示文摘Calcium and protein kinase serve as the common mediators to regulate plant responses to multiple stresses including salt and ABA stimulus. Here we reported a novel protein kinase (CIPK14) that regulated the responses to ABA treatment and salt stress in Arabidopsis. CIPK14 transcripts, capable been checked in roots, stems, leaves and flowers, were highly expressed in flowers and roots. CIPK14 was induced by ABA and salt treatments. The disruption of CIPK14 altered the transcriptional pattern of a gene marker line related to ABA and salt responses, and the results suggested that CIPK14 probably was responsible to the control of the salt and ABA responses. Comparing with wild types, the lines inserted with the T-DNA in which CIPK14 gene expression was knocked out were also more sensitive to ABA and salt stimulus, showing low germination rate and the less root elongation. While, when these conditioned seeds were treated with norflurazon, their germination percentages could recover to a certain extent. We also found that exogenous calcium could have an effect on the transcription of CIPK14 under ABA and salt treatments, and it seemed that calcium ion might work upstream CIPK14 to regulate the plant response to ABA and salt response. | QIN YuZhi1,2, LI Xu1, GUO Ming1, DENG KeQin1, LIN JianZhong1, TANG DongYing1, GUO XinHong1 & LIU XuanMing1 1 College of Life Science and Biotechnology, Bioenergy and Biomaterial Research Center, Hunan University, Changsha 410082, China 2 College of living resources & Environment Science, Jishou University, Jishou 416000, China | 2008 | Science China(Life Sciences)2008，51，5： | 16 |
| 11 | Critical slope gradient for compulsory abandonment of farmland on the hilly Loess Plateau显示文摘Scientific evidence for the upper limit of farmland is proposed. Shallow gully erosion is one of erosion types distributed extensively on sloping farmland in the hilly regions of the Loess Plateau. Field observation and aerial photos interpretation, as well as laboratory experiments show that the shallow gully erosion occurring on the steeper farmland in the hilly regions of the Loess Plateau is an important factor leading to intensive erosion on slope, because of its extensive distribution and intensive runoff collection. The data on the formation, development and distribution of shallow gullies on sloping farmland indicate that critical slope gradient for shallow gully initiation ranges from 15 to 20 degrees with an average of 18.2 degrees. Therefore, it is suggested that critical slope gradient for compulsory abandonment of farmland on the hilly Loess Plateau should be kept within the critical slope gradient for shallow gully initiation to prevent shallow gully formation in order to control soil loss more effectively. But as the first step, the cultivation on the slopes with slope larger than 25 degrees where the maximum erosion occurs should be strictly forbidden. | TANG Keli+1, ZHANG Keli 1,2 and LEI Aling 1,3 1. Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China 2. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China 3. Water Resources C | 1998 | Chinese Science Bulletin1998，43，5： | 16 |
| 12 | Relationship between Fas/ FasL expression and apoptosis of colon adenocarcinoma cell lines显示文摘INTRODUCTIONFas/ FasL system has been identified as a keymediator of apoptosis in tumor cells[1-4]. Theoccurrence and development of neoplasm are closelyrelated to apoptosis[5-7] Most chemotherapeuticdrugs kill cancer cells mainly by inducingapoptosis[8-14].' | Zhi Hai Peng Tong Hai Xing Guo Qiang Qiu Hua Mei Tang Shanghai No. 1 People’s Hospital, Shanghai 200080, China | 2001 | World Journal of Gastroenterology2001，7，1： | 15 |
| 13 | Mn content of reservoir calcite cement: A novel inorganic geotracer of secondary petroleum migration in the tectonically complex Junggar Basin (NW China)显示文摘Electronic probe microanalysis(EPMA) results of reservoir calcite cement from fourteen core samples in the Junggar Basin show that Mn-content varies largely between different samples from below the detect limitation to 4.14%,while it displays a generally good correlation with oil-gas shows.This,therefore,likely indicates that concentration of the Mn-content of the calcite cement has a close rela-tion to the intensity of petroleum fluid charging during hydrocarbon secondary migration.In order to assess this hypothesis,oxygen and strontium isotopic measurements on sixteen calcite veins host in source sequences were carried out to investigate the feature of the oil-source petroleum fluid.Analytical results imply that during hydrocarbon generation and migration,deep hot fluid has dissolved volcanic minerals interlined between mudstone source rocks.As Mn is a kind of typical trace element enriched in volcanic rocks,it is reasonable to conclude that the petroleum fluid formed in the source sequences would be Mn-rich.Consequently,calcite cements precipitated from such Mn-rich petroleum fluid would be Mn-rich accordingly.Due to the geologic chromatographic effect during migration along reservoir rocks,the decreasing of the Mn-content of the reservoir calcite cements indicates the migration direction.Then,this novel geotracer was further successfully applied in the study of hydrocarbon migration in the Junggar Basin in combination with organic geochemical analyses during the hydrocarbon migration.The Mn content of the reservoir calcite cement appears promising as a novel inorganic geotracer for the petroleum migration.This paper represents a search for novel indicators of secondary petroleum migration in tectonically complex basins based on fundamentals of the reservoir fluid-rock interactions. | CAO Jian1,HU WenXuan1,YAO SuPing1,ZHANG YiJie2,WANG XuLong3,ZHANG YueQian3,TANG Yong3 & SHI XinPu3 1 State Key Laboratory for Mineral Deposit Research,Department of Earth Sciences,Nanjing University,Nanjing 210093,China 2 Research Institute of Exploration and Development,PetroChina,Beijing 100083,China 3 Research Institute of Exploration and Development,PetroChina Xinjiang Oilfield Company,Karamay 834000,China | 2007 | Science China Earth Sciences2007，50，12： | 14 |
| 14 | Evaluation on the accuracy of digital elevation models显示文摘There is a growing interest in investigating the accuracy of digital elevation model (DEM). However people usually have an unbalanced view on DEM errors. They emphasize DEM sampling errors, but ignore the impact of DEM resolution and terrain roughness on the accuracy of terrain representation. This research puts forward the concept of DEM terrain representation error (Et) and then investigates the generation, factors, measurement and simulation of DEM terrain representation errors. A multi-resolution and multi-relief comparative approach is used as the major methodology in this research. The experiment reveals a quantitative relationship between the error and the variation of resolution and terrain roughness at a global level. Root mean square error (RMS Et) is regressed against surface profile curvature (V) and DEM resolution (R) at 10 resolution levels. It is found that the RMS Et may be expressed as RMS Et = (0.0061 ( V+ 0.0052) ( R - 0.022 ( V + 0.2415. This result may be very useful in forecasting DEM accuracy, as well as in determining the DEM resolution related to the accuracy requirement of particular application. | TANG Guo-an~1, Josef Strobl~2, GONG Jian-ya~3, ZHAO Mu-dan~1, CHEN Zhen-jiang~1 (1. Department of Geography, Northwest University, Xi’an 710069, China 2. Department of Geography and Geoinformation, Salzburg University, Hellbrunnerstr. 34, A-5020 Salzb | 2001 | Journal of Geographical Sciences2001，11，2： | 13 |
| 15 | Comparative analysis of astaxanthin and its esters in the mutant E1 of Haematococcus pluvialis and other green algae by HPLC with a C30 column显示文摘A gradient reversed-phase high-performance liquid chromatography (HPLC) method using a C30 col-umn was developed for the simultaneous determination of astaxanthin, astaxanthin monoesters and astaxanthin diesters in the green algae Chlorococcum sp., Chlorella zofingiensis, Haematococcus plu-vialis and the mutant E1, which was obtained from the mutagenesis of H. pluvialis by exposure to UV-irradiation and ethyl methanesulphonate (EMS) with subsequent screening using nicotine. The re-sults showed that the contents of total astaxanthins including free astaxanthin and astaxanthin esters ranged from 1.4 to 30.9 mg/g dry biomass in these green algae. The lower total astaxanthin levels (< 2 mg/g dry biomass) were detected in the green algae Chlorococcum sp. and C. zofingiensis. The higher total astaxanthin levels (>16 mg/g dry biomass) were found in the green alga H. pluvialis and its mutant E1. It is notable that the mutant E1 is found to have considerably higher amounts of total astaxanthin (30.9 mg/g) as compared to the wild strain of H. pluvialis (16.1 mg/g). This indicates that UV-irradiation and EMS compound mutagenesis with subsequent screening using nicotine is an effective method for breeding of a high-producing astaxanthin strain of H. pluvialis. In addition, the green alga C. zofingien-sis had a remarkably higher percentage of astaxanthin diesters (76.3% of total astaxanthins) and a re-markably lower percentage of astaxanthin monoesters (18.0% of total astaxanthins) in comparison with H. pluvialis (35.5% for diesters and 60.9% for monoesters), the mutant E1 (49.1% and 48.1%) and Chlorococcum sp. (18.0% and 58.6%). | PENG Juan1, XIANG WenZhou2,1, TANG QuanMing1, SUN Ni1, CHEN Feng1,3 & YUAN JianPing 4 1 South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China 2 Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China 3 School of Biological Sciences, The University of Hong Kong, Hong Kong, China 4 Institute of Oceanology & College of Life Sciences, Sun Yat-Sen University, Guangzhou 510301, China | 2008 | Science China(Life Sciences)2008，51，12： | 12 |
| 16 | Capability of evolutionary cryptosystems against differential cryptanalysis显示文摘The evolutionary cryptosystem is a new cryptosystem.This paper studies its security level resisting against differential cryptanalysis.It is shown that the evolutionary cryptosystem possesses higher resistance than its initial fixed cryptosystem against differential cryptanalysis.On the basis of the relationship among the data complexity,the bit advantage and the success rate of differential cryptanalysis,it is proven that more data is needed for attacking the evolutionary cryptosystem when the bit advantage and success rate are identical.Moreover,it is shown that the time complexity for attacking the evolutionary cryptosystem is higher than that of differential attacking its initial fixed cryptosystem with the same amount of plaintext-ciphertext pairs.The research indicates that the evolutionary cryptosystem is more robust than its initial fixed cryptosystem against differential cryptanalysis. | ZHANG HuanGuo 1,2 ,LI ChunLei 1,2 & TANG Ming 1,2 1 School of Computer,Wuhan University,Wuhan 430072,China 2 Key Laboratory of Aerospace Information Security and Trusted Computing of Ministry of Education,Wuhan University,Wuhan 430072,China | 2011 | Science China(Information Sciences)2011，54，10： | 11 |
| 17 | 澳洲坚果果壳解吸等温线与吸附等温线拟合模型显示文摘采用非线性回归方法,分析评价了6种模型与试验得到的澳洲坚果果壳在25℃下的解吸等温线与吸附等温线的拟合程度,以确定最佳拟合模型及其参数。结果表明,根据国际理论和应用化学联合会(IUPAC)的分类,解吸等温线与吸附等温线都属于第Ⅰ种类型。解吸吸附滞后现象属于H3型。GAB模型是最佳的解吸等温线和吸附等温线拟合方程。GAB模型拟合解吸等温线的参数A、B、C分别为9.693、0.605、8.378,拟合吸附等温线的参数分别为9.695、0.635、3.268。 | 王云阳 张丽 王绍金 Tang Juming 李元瑞1 | 2012 | 农业机械学报2012，43，5： | 11 |
| 18 | ION HEATING PROCESS DURING PLASMA IMMERSION ION IMPLANTATION显示文摘The research on plasma immersion ion implantation has been conducted for a little over ten years. Much is needed to investigate including processing technlogy, plasma sheath dynamics, interaction of plasma and surface, etc. Of the processing methods elavated temperature technique is usually used in PIII to produce a thick modified layer by means of the thermal diffusion. Meanwhile plasma ion heating is more recently developed by Ronghua Wei et al[1]. Therefore the temeperature is a critical parameter in plasma ion processing. In this paper we present the theoretical model and analysize the effect of imlantation voltage, plasma density, ion mass,etc on the temperature rise. | X.B. Tian, X.F. Wang, A.G. Liu, L.P. Wang, S. Y. Wang, B. Y. Tang and P. K. Chu 1)Advanced Welding Production & Technology National Key Laboratory, Harbin Institute of Technology, Harbin 150001, China 2)Department of Physics & Materials Science, City Uni | 2000 | Acta Metallurgica Sinica(English Letters)2000，13，2： | 11 |
| 19 | Global absorption center map of the mafic minerals on the Moon as viewed by CE-1 IIM data显示文摘Determining the global distribution of minerals on the Moon has been an important goal of lunar science. Hyperspectral remote sensing is an important approach to acquiring minerals on the Moon on the global scale. The wavelength of the absorption band center is the key parameter for identifying minerals with reflectance spectra as well as remote sensing data. The global absorption center map of the mafic minerals of the Moon was produced for the first time with the Chang’E-1 IIM data. This map shows the global distribution of mafic minerals such as orthopyroxenes, clinopyroxenes, and olivine and even plagioclase feldspar of the Moon. The validation for some representative areas indicates that the global map is reliable and even more detailed than the results derived from Clementine-data. Moreover, our method is insensitive to the topography and viewing and illumination geometries. The global absorption band center map not only contributes to the lunar science research, but also has other implications to be further studied. Moreover, the preprocessing methods such as calibration and correction introduced in this study can be useful in other research with IIM data. | WU YunZhao 1,4* , ZHANG Xia 2 , YAN BoKun 3 , GAN FuPing 3 , TANG ZeSheng 4 , XU AoAo 4 , ZHENG YongChun 5 & ZOU YongLiao 5 1 School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China 2 Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China 3 Institute for Remote Sensing Method, China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China 4 Collaborative Research Laboratory on Lunar and Planetary Exploration, Macao University of Science and Technology, Taipa, Macao, China 5 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，12： | 11 |
| 20 | RILL EROSION PROCESS ON STEEP SLOPE LAND OF THE LOESS PLATEAU显示文摘Rill erosion processes and principle of preventing rill erosion of different applied measures are studied by rainfall simulation and field investigation. Research results show that rill erosion processes can be schematically divided into five stages, that is, concentrated flow forming process; little waterfalls in the concentrated flow forming Process; little waterfalls developing into rill head cut process; rill head cuts developing to form discontinuous rill process and discontinuous rills connecting to form continuous rill process. Rill head cuts backward erosion, rill wall collapsing and runoff washing rill bed are the main patterns of rill development. The relevant equation between critical runoff volume of occurring rill erosion and slope degree can be expressed as follows: Q = 76. 10 - 2. 10J. And relevant equation between critical slope length of occurrence Of rill erosion and slope degree is parabolic with a minimum-value. In addition, influence of rill erosion development on slope runoff and soil erosion, benefits and principle of reducing rill erosion amount of mulch, non-tillage system and remained residue, strip alternation of grass and crop, horizontal ditch are also studied. | ZHENG Fenli and TANG Keli (1 The English text has been altered and edited by Dr. DING Lianzhen 2 Engineer, National Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Chinese Academy of Sciences and institute of Soil and Water Conservati | 1997 | International Journal of Sediment Research1997，12，1： | 9 |
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