|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Prediction of permafrost distribution on the Qinghai-Tibet Plateau in the next 50 and 100 years显示文摘Intergovernmental Panel on Climate Change (IPCC) in 2001 reported that the Earth air temperature would rise by 1.4-5.8℃ and 2.5℃ on average by the year 2100. China re-gional climate model results also showed that the air temperature on the Qinghai-Tibet Plateau (QTP) would increase by 2.2-2.6℃ in the next 50 years. A numerical permafrost model was developed to predict the changes of permafrost distribution on the QTP over the next 50 and 100 years under the two climatic warming scenarios, i.e. 0.02℃/a, the lower value of IPCC’s estima-tion, and 0.052℃/a, the higher value predicted by Qin et al. Simulation results show that ( i ) in the case of 0.02℃/a air-temperature rise, permafrost area on the QTP will shrink about 8.8% in the next 50 years, and high temperature permafrost with mean annual ground temperature (MAGT) higher than ?0.11℃ may turn into seasonal frozen soils. In the next 100 years, perma-frost with MAGT higher than ?0.5℃ will disappear and the permafrost area will shrink up to 13.4%. (ii) In the case of 0.052℃/a air-temperature rise, permafrost area on the QTP will reduce about 13.5% after 50 years. More remarkable degradation will take place after 100 years, and permafrost area will reduce about 46%. Permafrost with MAGT higher than ?2℃ will turn into seasonal frozen soils and even unfrozen soils. | NAN Zhuotong LI Shuxun CHENG Guodong | 2005 | Science China Earth Sciences2005，48，6： | 40 |
| 2 | Thawing and freezing processes of active layer in Wudaoliang region of Tibetan Plateau显示文摘The interaction between permafrost and atmosphere is accomplished through transfer of heat and moisture in the overlay active layer. Thus, the research on the thermal and hydrodynamics of active layer during the thawing and freezing processes was considered a key to revealing the heat and moisture exchanges between permafrost and atmosphere. The monitoring and research on active layer were conducted because permafrost occupies about two thirds of the total area of the Tibetan Plateau. Based on the analysis of the ground temperature data and soil moisture data of monitoring near the Wudaoliang region of the Tibetan Plateau, the thawing and freezing processes of active layer were divided into four stages, i.e. summer thawing stage (ST), autumn freezing stage (AF), winter cooling stage (WC) and spring warming stage (SW). Coupled heat and water flow is much more complicated in ST and AF, and more amount of water is migrating in these two stages. Heat is transferred mainly via conductive heat flow in the | Lin Zhao Guodong Cheng Shuxun Li Xinmin Zhao Shaoling Wang | 2000 | Chinese Science Bulletin2000，45，23： | 31 |
| 3 | High-density Linkage Map of Cultivated Allotetraploid Cotton Based on SSR, TRAP, SRAP and AFLP Markers显示文摘一张高密度的连锁图为从在 Gossypium hirsutum L 之间的 cultivatedallotetraploid 种类的一个种间的十字导出的一张 F_2 人口被构造。并且 G.barbadense L。从种间的十字的 186 个 F_2 个人的一个总数“ CRI36 x 哈尔 7124' 是在包括一个新奇标记系统的 1 252 多态的 loci 的 genotyped,目标区域扩大多型性(陷井) 。地图由 1 097 个标记组成,包括 697 简单顺序重复(SSR ) , 171 个陷井, 129 顺序相关的放大多型性, 98 放大 fragmentlengthpolymorphisms,和二个词法标记,并且跨越了 4 有 4.1cM 的平均遗传距离的 536.7 厘米每标记。用在染色体之中的 45 复制 SSR loci, 13 同源染色体中的 11 个在四倍体棉花被识别。这张地图将为量的特点 loci 并且在棉花的分子的繁殖印射的高分辨率提供一个必要资源。 | Jiwen Yu Shuxun Yu Cairui Lu Wu Wang Shuli Fan Meizhen Song Zhongxu Lin Xianlong Zhang Jinfa Zhang | 2007 | Journal of Integrative Plant Biology2007，49，5： | 29 |
| 4 | One-year clinical study of NeuroR egen scaffold implantation following scar resection in complete chronic spinal cord injury patients显示文摘The objective of this clinical study was to assess the safety and feasibility of the collagen scaffold, Neuro Regen scaffold, one year after scar tissue resection and implantation. Scar tissue is a physical and chemical barrier that prevents neural regeneration. However, identification of scar tissue is still a major challenge. In this study, the nerve electrophysiology method was used to distinguish scar tissue from normal neural tissue, and then different lengths of scars ranging from 0.5–4.5 cm were surgically resected in five complete chronic spinal cord injury(SCI) patients. The NeuroR egen scaffold along with autologous bone marrow mononuclear cells(BMMCs), which have been proven to promote neural regeneration and SCI recovery in animal models, were transplanted into the gap in the spinal cord following scar tissue resection. No obvious adverse effects related to scar resection or Neuro Regen scaffold transplantation were observed immediately after surgery or at the 12-month follow-up. In addition, patients showed partially autonomic nervous function improvement, and the recovery of somatosensory evoked potentials(SSEP) from the lower limbs was also detected. The results indicate that scar resection and Neuro Regen scaffold transplantation could be a promising clinical approach to treating SCI. | Zhifeng Xiao Fengwu Tang Jiaguang Tang Huilin Yang Yannan Zhao Bing Chen Sufang Han Nuo Wang Xing Li Shixiang Cheng Guang Han Changyu Zhao Xiaoxiong Yang Yumei Chen Qin Shi Shuxun Hou Sai Zhang Jianwu Dai | 2016 | Science China(Life Sciences)2016，59，7： | 18 |
| 5 | Permafrost on the Qinghai-tibet Plateau under a Changing Climate显示文摘Permafrost on the Qinghai-Tibet Plateau (QTP) has experienced major shifts during theQuaternary. During the past 40 years, permafrost has been degrading extensively, due to climaticwarming. Simulations suggest significant degradation of permafrost both in extent and inthickness within the next 50-100 years. Freshwater wetlands on the QTP can contributesignificantly to the global budgets in the atmospheric greenhouse gases. Permafrost degradationon the QTP has caused destabilization of foundations of engineering structures, deterioration ofgrasslands and meadows, and weakening of permafrost control on water resources. | JIN Huijun CHENG Guodong LI Xin LI Shuxun Observatory and Research Station of the Qinghai-Tibet Plateau. State Key Laboratory of Frozen Soil Engineering, LIGG, CAS, Lanzhou 730000 CHINA. | 1999 | Chinese Science Bulletin1999，44，S1： | 14 |
| 6 | Disease profile and plasma neutralizing activity of postvaccination Omicron BA.1 infection in Tianjin,China:a retrospective study显示文摘Dear Editor,SARS-CoV-2 Omicron variant BA.1 first emerged on the Chinese mainland on January 8,2022,in Tianjin and caused a large wave of infections.1 Four rounds of mass testing of its~14 million residents were launched on January 9,12,15,and 20,respectively.As of February 7,2022,a total of 430 individuals were tested positive for Omicron BA.1,with no new infections detected for the following 16 days.In the Chinese mainland,the most delivered vaccines are inactivated vaccines.As of January 8,2022,up to 93.2%of Tianjin’s residents had been vaccinated with at least one dose.2 We investigated the protection conferred by vaccination against Omicron BA.1 by examining the breakthrough infections among vaccinees as compared with unvaccinated cases.Our study population comprised all 430 cases during the outbreak of Omicron BA.1 in Tianjin. | Hong Zheng Yunlong Cao Xiaosu Chen Fengmei Wang Ye Hu Weiliang Song Yangyang Chai Qingqing Gu Yansong Shi Yingmei Feng Shuxun Liu Yan Xie Xiaoliang Sunney Xie Wentao Jiang Zhongyang Shen | 2022 | Cell Research2022，32，8： | 12 |
| 7 | Preparation of modified Ce-SAPO-34 catalysts and their catalytic performances of methanol to olefins显示文摘The modified Ce-SAPO-34 catalysts were prepared with three methods, i.e., the liquid ion exchange with air calcination, impregnation with air calcination and impregnation with steam calcination methods. The catalytic performances of the catalysts for methanol to olefins were investigated. The properties of the catalysts were characterized using XRD, BET, XRF, FT-IR and NH3-TPD. The results indicated that compared to the SAPO-34 catalyst the catalyst prepared with the impregnation and air calcination prolonged the lifetime by 40 min and improved the selectivity to ethylene by 5% (mol) and the catalyst prepared with the impregnation and steam calcination showed the best modification effect, prolonging the lifetime by 70 min and improving the ethylene selectivity by 10% (mol). The catalyst prepared with the liquid ion exchange showed similar behaviour as the SAPO-34 catalyst. It was verified that the porous structure and surface acidity of these catalysts determined their catalytic behaviors. | Shuxun Tian Shengfu Ji Dandan Lü Bingyang Bai Qi Sun | 2013 | Journal of Energy Chemistry2013，22，4： | 10 |
| 8 | Optimum location of surface wells for remote pressure relief coalbed methane drainage in mining areas显示文摘Based on engineering tests in the Huainan coal mining area,we studied alternative well location to improve the performance of surface wells for remote pressure relief of coalbed methane in mining areas.The key factors,affecting location and well gas production were analyzed by simulation tests for similar material.The exploitation results indicate that wells located in various positions on panels could achieve relatively better gas production in regions with thin Cenozoic layers,low mining heights and slow rate of longwall advancement,but their periods of gas production lasted less than 230 days,as opposed to wells in regions with thick Cenozoic layers,greater mining heights and fast rates of longwall advancement.Wells near panel margins achieved relatively better gas production and lasted longer than centerline wells.The rules of development of mining fractures in strata over panels control gas production of surface wells.Mining fractures located in areas determined by lines of compaction and the effect of mining are well developed and can be maintained for long periods of time.Placing the well at the end of panels and on the updip return airway side of panels,determined by lines of compaction and the effect of mining,would result in surface wells for remote pressure relief CBM obtaining their longest gas production periods and highest cumulative gas production. | HUANG, Huazhou SANG, Shuxun FANG, Liangcai LI, Guojun XU, Hongjie REN, Bo | 2010 | Mining Science and Technology2010，20，2： | 9 |
| 9 | Accumulation and speciation of selenium in Cardamine sp. in Yutangba Se Mining Field, Enshi, China显示文摘A naturally selenium-accumulating Cardamine sp. is growing in Yutangba Selenium Mining Field, Enshi area, Hubei Province, China, where the geochemical environment is selenium-enriched and endemic selenosis ever occurred in humans. The present study investigated the characteristics of accumulation, speciation and quantity of selenium in Cardamine sp. with HPLC-ICP-MS. Results show that Cardamine sp. can accumulate Se at most 1427 mg/kg in seedling leaves. Even after the biomass incensement of growing up, the plant still could accumulate Se up to several hundred of mg/kg in concentration. Moreover, the biomass enrichment coefficient(BEC) of Se is exceedingly high, in the seedling leaves mostly, higher than 50 mg/kg; in the range of 43.7–68 mg/kg; and the lowest value is higher than 3 mg/kg in mature fronds. Se is present in the plant predominantly in form of Se Cys2 with the highest concentration in seeds; up to 1081 mg/kg as Se. In contrast, Se Cys2 levels are low during early growth period; they are 136.1 mg/kg as Se in seedling fronds and 39.4 mg/kg as Se in mature fronds, respectively. Se Met concentration is comparatively low; 10.6 mg/kg as Se in seedling frond and 5.3 mg/kg as Se in half mature fronds, respectively. This indicates that Cardamine sp. is extremely efficient in extracting Se from soil and translocating it into its above-ground biomass. Therefore, Cardamine sp., found in Yutangba Se Mining Field may be a new Se hyperaccumulator. It is still uncertain whether the Se-accumulation or detoxification of Cardamine sp. happens through the pathway of Se Cys methylated to form Se-methylseleno Cys or through the formation of Se-carboxymethyl- selenohomocysteine. Indeed, further study should be carried out on the determination of more Se species to explain the high Se hyperaccumulation in Cardamine sp. | SHAO Shuxun DENG Guodong MI Xiubo LONG Shengqiao ZHANG Jing TANG Jun | 2014 | Chinese Journal Of Geochemistry2014，33，4： | 8 |
| 10 | Simulation of Paleotectonic Stress Fields and Distribution Prediction of Tectonic Fractures at the Hudi Coal Mine, Qinshui Basin显示文摘Study on tectonic fractures based on the inversion of tectonic stress fields is an effective method. In this study, a geological model was set up based on geological data from the Hudi Coal Mine, Qinshui Basin, a mechanical model was established under the condition of rock mechanics and geostress, and the finite element method was used to simulate the paleotectonic stress field. Based on the Griffith and Mohr-Coulomb criterion, the distribution of tectonic fractures in the Shanxi Formation during the Indosinian, Yanshanian, and Himalayan period can be predicted with the index of comprehensive rupture rate. The results show that the acting force of the Pacific Plate and the India Plate to the North China Plate formed the direction of principal stress is N-S, NW-SE, and NE-SW, respectively, in different periods in the study area. Changes in the direction and strength of the acting force led to the regional gradients of tectonic stress magnitude, which resulted in an asymmetrical distribution state of the stress conditions in different periods. It is suggested that the low-stress areas are mainly located in the fault zones and extend along the direction of the fault zones. Furthermore, the high-stress areas are located in the junction of fold belts and the binding site of multiple folds. The development of tectonic fractures was affected by the distribution of stress intensity and the tectonic position of folds and faults, which resulted in some developed areas with level Ⅰ and Ⅱ. There are obvious differences in the development of tectonic fractures in the fold and fault zones and the anticline and syncline structure at the same fold zones. The tectonic fractures of the Shanxi Formation during the Himalayan period are more developed than those during the Indosinian and Yanshanian period due to the superposition of the late tectonic movement to the early tectonic movement and the differences in the magnitude and direction of stress intensity. | FANG Huihuang SANG Shuxun WANG Jilin LIU Shiqi JU Wei | 2017 | Acta Geologica Sinica(English Edition)2017，91，6： | 8 |
| 11 | Lead Isotopic Composition and Lead Source in the Bainiuchang Ag-polymetallic Deposit, Yunnan Province, China显示文摘在云南省的 Bainiuchang 存款,中国,在 Gejiu 矿石地和 Dulong 矿石之间地理上被定位地。除了 > 7000 t Ag 储备,存款也与很多驱散的元素炫耀大规模 Pb, Zn 和 Sn 储备(在里面, Cd, Ge, Ga,等等) 。我们系统地决定了存款的 Pb 同位素作文。海地板 exhalative 是在采矿区域的西北的沉积起源的矿石的 Pb 同位素比率,是 206Pb/204Pb = 17.758-18.537 , 207Pb/204Pb = 15.175-15.862 和 208Pb/204Pb = 37.289-39.424 ,当时那些矿石,那具有 magmatic 在采矿区域的东南的热水的重迭起源,分别地是 206Pb/204Pb = 17.264-18.359 , 207Pb/204Pb = 14.843-15.683 和 208Pb/204Pb = 36.481-38.838 。以在 magmatic 岩石或 magmatic 中的长石的 Pb 同位素作文从采矿区域的整个岩石的样品,我们决定了 Pb 同位素作文并且是获得了 Pb 同位素比率:206Pb/204Pb = 18.224-18.700, 207Pb/204Pb = 15.595-15.797 和 208Pb/204Pb = 38.193-39.608。然后,根据 Pb 同位素,变形岩石的作文取样从原生地,地下室在 Dulong 矿石地里暴露了,我们决定了 Pb 同位素作文并且是获得了同位素比率:206Pb/204Pb = 18.434-19.119, 207Pb/204Pb = 15.644-15.693,和 208Pb/204Pb = 38.514-38.832。并且寒武纪的沉积岩石的 Pb 同位素比率,在 Bainiuchang 采矿区域被暴露,是 206Pb/204Pb = 18.307-19.206, 207Pb/204Pb = 15.622-15.809,和 208Pb/204Pb = 38.436-39.932。由关于他们的 Pb 同位素作文比较矿石的二种类型,在 Bainiuchang 存款的铅主要从比在年龄的 Neoproterozoic 早的降低外壳的 granulite 被导出,这被显示,但是热水的液体可能提供了的 Yanshanian magmatic 象为矿石的 Sn 那样的形成矿石的元素的部分在采矿区域的南方堵住。 | ZHU Chaohui ZHANG Qian SHAO Shuxun ZHU Xiaoqing WANG Dapeng | 2008 | Acta Geologica Sinica(English Edition)2008，82，4： | 7 |
| 12 | Preliminary analysis of distribution and variation of perennialmonthly mean water masses in the Bohai Sea,the Huanghai Sea and the East China Sea显示文摘On the basis of perennial monthly mean temperature and salinity data, the classification of monthly water masses at the surface and the bottom in the Bohai Sea, the Huanghai Sea and the East China Sea, has been made by using the method of fuzzy cluster from the modified characteristic of water masses in the shallow water area. In this paper, the basic features, growth and decline patterns of water masses in relation to fishing grounds in the whole shelves of the Bohai Sea, the Huanghai Sea and the East China Sea are discussed with emphasis. | Liu Shuxun, Shen Xinqiang, Wang Youqin and Han Shixin 1. East China Sea Fisheries Research Institute, No. 300, Jungong Road, Shanghai 200090, China | 1992 | Acta Oceanologica Sinica1992，11，4： | 6 |
| 13 | A novel cellulose hydrogel prepared from its ionic liquid solution显示文摘A novel cellulose hydrogel is prepared by regenerating cellulose from its ionic liquid solution. The transparency cellulose hydrogel presents a good chemical stability and an acceptable mechanical property. This non-toxic cellulose hydrogel should be biocompatible and may be useful in the future as a biomaterial. | LI Lu LIN ZhangBi YANG Xiao WAN ZhenZhen CUI ShuXun | 2009 | Chinese Science Bulletin2009，54，9： | 6 |
| 14 | Production Characteristics and the Control Factors of Surface Wells for Relieved Methane Drainage in the Huainan Mining Area显示文摘在 Huainan 采矿区域基于很多表面排水井的生产数据,四为减轻的甲烷井典型生产特征打的现在的学习表演被认出,哪个为生产的稳定的类型和煤气的集中是大多数统治,是在排干的气体的体积和集中上由全面研究决定了,以及岩石的压力变化由采矿影响了。为排水井的生产差别的一些影响因素也被讨论。结果显示保护的煤缝接采矿在 overlying 阶层上有重要效果,它为甲烷解吸附作用和移植支持毛孔的开发和煤水库的破裂;然而,生产和排水井的稳定性被 overlying 阶层的变丑和损坏影响。阶层应力的第二分布被采矿工程引起,并且如果压力负担比抽取的带的能力大很好,煤气的生产将被被岩石运动损坏了的排水井影响。而且,盒子损坏首先发生在弱,由它的特殊机械性质的 lithologic 接口。排水井和生产地位的稳定性被不同的钻技术,煤气的集中的不平的分发,和嘴气体和甲烷的联合也从保护的层影响。 | XU Hongjie SANG Shuxun FANG Liangcai HUANG Huazhou | 2011 | Acta Geologica Sinica(English Edition)2011，85，4： | 6 |
| 15 | Highlights of the advances in basic immunology in 2011显示文摘在这评论,我们在研究在 2011 报导了的免疫学的总结主要基本进展。热点集中于关键问题的改进理解在基本免疫学,包括象为各种各样的 T 房间子集的开发和函数的机制一样的天生的回答的开始和激活。研究象像使用费的受体(TLR ) 和 retinoic 的新奇管理者的鉴定一样包括新奇 cytosolic RNA 和 DNA 传感器的鉴定酸可诱导的基因(RIG-I ) 我喜欢发信号的受体(RLR ) 小径。而且,显著进展在天生的淋巴的房间(ILC ) 的发展、功能的性质被做了。助手 T 房间和规章的 T (Treg ) 房间在安排适应免疫起不可缺少的作用。在那里关于不同 T 房间子集的发展的规章的机制使发现一直在激动,特别地 Th17 房间和 Treg 房间。在 T 房间免疫的 microRNAs (miRNAs ) 的新兴的角色被讨论,作为一个新奇 T 房间子集的最近的鉴定被叫作小囊的规章的 T (TFR ) 房间。 | Juan Liu Shuxun Liu Xuetao Cao | 2012 | Cellular & Molecular Immunology2012，9，3： | 6 |
| 16 | Molecular Cloning and Function Analysis of Two SQUAMOSA-Like MADS-Box Genes From Gossypium hirsutum L.显示文摘疯盒子的基因编码在植物开发有多样的角色的抄写因素的一个大家庭。SQUAMOSA (SQUA )/APETALA1 (AP1 )/FRUITFULL (FUL ) 亚科基因是花的转变和花的机关身份的必要管理者。这里,我们克隆二疯盒子的基因, GhMADS22 和 GhMADS23,属于从 Gossypium hirsutum L 的 SQUA/AP1/FUL 亚群。种系发生的分析和顺序排列显示出那 GhMADS22, GhMADS23 分别地属于 euFUL 和 euAP1 subclades。二基因两个都根据在获得的 cDNA 顺序和 Gossypium raimondii L 之间的排列从开始 codon 有八 exons 和七 introns 到站 codon。染色体顺序。表示侧面分析证明 GhMADS22 和 GhMADS23 高度在开发射击顶,苞,和萼片被表示。Gibberellic 酸在射击顶支持了 GhMADS22 和 GhMADS23 表示。转基因的 Arabidopsis 线 overexpressing 35S::GhMADS22 有反常的花并且在长天的条件(16h light/8h 黑暗) 下面比野类型早跑了。而且,推迟的花的机关老朽和截去和它能也回答到 abscisic 酸的 GhMADS22 overexpression。在摘要, GhMADS22 可以在支持 flowering 有功能,改进抵抗并且推迟它可以是的为棉花并且这样的老朽为支持的一个候选人目标在棉花繁殖早成熟。 | Wenxiang Zhang Shuli Fan Chaoyou Pang Hengling Wei Jianhui Ma Meizhen Song Shuxun Yu | 2013 | Journal of Integrative Plant Biology2013，55，7： | 6 |
| 17 | Changes and spatial patterns of the differences between ground and air temperature over the Qinghai-Xizang Plateau显示文摘地面土壤和空气温度( Ts-Ta )之间的差别被从 1960~2000 在 Qinghai-Xizang (西藏)高原上使用地面的数据和 99 个车站的空气温度学习,并且它的空间分发和时间变化趋势被主要部件分析和力量诊断了光谱分析方法。结果证明价值(Ts-Ta ) 在 12 月是在 6 月和最小的最大值。开始的三装载特徵向量,它反映主要空间地异常的结构( Ts-Ta )在 Qinghai-Xizang 高原上,包含矛盾的变化模式在之间西北并且东南的区域,海水平举起的模式反应和地理,并且永久冻土的分发的模式反应。有包括有最小的价值的单调的增加或减少的趋势,基本稳定性模式和抛物线模式的模式的时间进化的四个模式。(Ts-Ta ) 有一个周期的变化大约 2 年。根据第三的空间分发装载特徵向量(Ts-Ta ) 在在冷季节,永久冻土反应区域和季节的冻结的地面的 Qinghai-Xizang 高原上,反应区域被识别。 | ZHANG Wengang LI Shuxun WU Tonghua PANG Qiangqiang | 2007 | Journal of Geographical Sciences2007，17，1： | 5 |
| 18 | Hydrocarbon Generation Evolution of Permo-Carboniferous Rocks of the Bohai Bay Basin in China显示文摘Bohai 海湾盆在北方中国 Craton 是中生代沉淀和新生代裂缝盆。自从 Permo 含碳的烃来源岩石的免职,盆经历了许多构造事件。来源岩石经历了不一致高举,扭动,深埋葬,并且 magmatism 和导致那一打断或在烃来源岩石的进化期间逐步。我们调查了埋葬的 Permo 含碳的烃来源岩石历史,加热,并且烃产生,不是仅仅根据构造骚乱并且深深地埋葬了而且与容易的 % Ro 的数字模拟的磷灰石分裂磁道分析,液体包括大小,和应用程序上的新研究。来源岩石的加热温度继续从 Indosinian 升起到喜玛拉雅的舞台并且到达了最大值在晚喜玛拉雅。这在器官的成熟和烃产生的多重阶段期间导致了逐步的增加。学习描出构造阶段,烃产生的紧张和烃代的空间、时间的分发。烃产生发生在 Indosinian 期间, Yanshanian,并且特别地迟了喜玛拉雅。烃产生在晚喜玛拉雅的阶段期间是为在中国的 Bohai 海湾盆的 Permo 含碳的来源岩石的最重要的。 | ZHU Yanming QIN Yong SANG Shuxun CHEN Shangbin LAN Xiaodong | 2010 | Acta Geologica Sinica(English Edition)2010，84，2： | 5 |
| 19 | The Impact of Climate Warming on Permafrost and Qinghai-Tibet Railway显示文摘Global warming is an inarguable fact. Permafrost is experiencing a change due to climate warming in Qinghai-Tibet Plateau, such as the decreasing of permafrost table, the rising of permafrost temperature, etc. On the basis of analysing the permafrost change under the climate change and engineering action, the thermal regime and spatial distribution of permafrost are predicted for air temperature rising 1℃ and 2.6℃ after 50 years in this paper. The results show that climate change results in the larger change for the thermal regime and spatial distribution of permafrost. Permafrost change will produce the great effect on the Qinghai-Tibet Railway engineering, not only resulting in the decreasing of permafrost table beneath the roadbed, but also resulting in thawing settlement due to the thawing of ground ice near permafrost table. The idea of cooling roadbed and actively protecting permafrost for the Qinghai-Tibet Railway engineering could adjust and control the permafrost thermal state, some better methods are provided to ensure the engineering stability in the areas of warm permafrost and high ice content. | Wu Qingbai Li Shuxun Liu Yongzhi | 2006 | 工程科学(英文版)2006，4，2： | 5 |
| 20 | Identification of genes associated with cotyledon senescence in upland cotton显示文摘In order to unravel the biochemical pathways and understand the molecular mechanisms involved in leaf senescence, suppression subtractive hybridization (SSH) was used to generate a cDNA library enriched for transcripts differentially expressed in developmental senescence cotyledons of upland cotton. After differential screening by membrane- based hybridization and subsequent confirmation by reverse Northern blot analysis, selected 678 clones were sequenced and analyzed. Sequencing of these cDNA fragments reveals that 216 of expressed se- quence tags (ESTs) represented unique genes. Of these 216 cDNAs, 151 clones (69.9%) show signifi- cant homologies to previously known genes, while the remaining 65 do not match any known sequences. 151 unique ESTs are assigned to twelve different categories based on their putative functions gener- ated by BLAST analysis. These SAG-encoded pro- teins are likely to participate in macromolecule deg- radation, nutrient recycling, detoxification of oxidative metabolites, and signaling and regulatory events. The expression pattern of selection of genes was confirmed using northern hybridization. Northern hybridization confirmed several distinct patterns, from expression at a very early stage to the terminal phase of the senescence syndrome. Clones encod- ing proteases and proteins involved in macromole- cule degradation and gluconeogenesis, as well as stress-related genes, are up regulated in senescence cotyledons. | SHEN Fafu YU Shuxun XlE Qingen HAN Xiulan FAN Shuli | 2006 | Chinese Science Bulletin2006，51，9： | 4 |
您所在的机构暂未开通此部分的功能，请联系管理员