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1The first offshore natural gas hydrate production test in South China Sea显示文摘Natural gas hydrates (NGH)is one of key future clean energy resources.Its industrialized development will help remit the huge demand of global natural gas,relieve the increasing pressure of the environment, and play a vital role in the green sustainable growth of human societies.Based on nearly two decades' studying on the reservoir characteristics in the South China Sea (SCS)and the knowledge of reservoir system,the China Geological Survey (CGS)conducted the first production test on an optimal target selected in Shenhu area SCS in 2017.Guided by the 'three-phase control'exploitation theory which focused on formation stabilization,technologies such as formation fluid extraction,well drilling and completing, reservoir stimulating,sand controlling,environmental monitoring,monitoring and preventing of secondary formation of hydrates were applied.The test lasted for 60 days from May 10^th when starting to pump, drop pressure and ignite to well killing on July 9^th,with gas production of 3.09×10^5 m^3 in total,which is a world record with the longest continuous duration of gas production and maximal gas yield.This successful test brings a significant breakthrough on safety control of NGH production.Jin-fa Li Jian-liang Ye Xu-wen Qin Hai-jun Qiu Neng-you Wu Hai-long Lu Wen-wei Xie Jing-an Lu Fei Peng Zhen-qiang Xu Cheng Lu Zeng-gui Kuang Jian-gong Wei Qian-yong Liang Hong-feng Lu Bei-bei Kou 2018China Geology2018,1,1:117
2Spatiotemporal dynamics of impervious surface areas across China during the early 21st century显示文摘China has experienced an unprecedented urbanization and industrialization in the past decades. In this research, we examined the dynamics of construction lands and impervious surface areas (ISA) based on land use/cover change and ISA datasets between 2000 and 2008, which were provided by the national resources and environmental remote sensing information platform. The results indicated that the construction areas and ISA increased by 3468.30 and 2212.24 km 2 /a in this period primarily due to the implementation of national macro-development strategies and fast-growing economy. In 2008, ISA accounted for 0.86% of the total land area in China. Urban land areas increased by 43.46% between 2000 and 2008. The annual growth rate of 1788.22 km 2 /a in this period was 2.18 times that in the 1990s. In particular, urban ISA increased by 53.30% between 2000 and 2008 with an annual growth rate of 1348.85 km 2 /a. During the 8 years, the ISA in China increased rapidly, especially in the Beijing-Tianjin-Tangshan Metropolitan Region, Pearl River Delta, Yangtze River Delta, and the western China region. The increasing ISA may influence potentially water environmental quality in the major basins. In particular, the number of subbasins having ISA of greater than 10% increased considerably, which were primarily distributed in the Haihe River, Yangtze River and Pearl River basins. In 2008, 14.42% of the basin areas were affected by the increased ISA.KUANG WenHui LIU JiYuan ZHANG ZengXiang LU DengSheng XIANG Bao 2013Chinese Science Bulletin2013,58,14:59
3Selection and development of representative simple sequence repeat primers and multiplex SSR sets for high throughput automated genotyping in maize显示文摘In the current study, 1900 maize simple sequence repeat (SSR) primers published in MaizeGDB were screened utilizing reference literature, 15 representative Chinese maize inbred lines and 15 Chinese maize hybrids from national regional testing. In total, 500 highly polymorphic primers were identified and used to construct a genetic map. 100 evenly distributed primers, 10 primers per chromosome, were further selected as a set of universal SSR core primers, recommended as preferred primers for general studies. These core primers were then redesigned and used to construct a high throughput multiplex PCR system based on a five-color fluorescence capillary detection system. We report here that two sets of ten-plex PCR combinations have been constructed, each consisting of 10 primers, with one primer per chromosome.WANG FengGe ZHAO JiuRan DAI JingRui YI HongMei KUANG Meng SUN YanMei YU XinYan GUO JingLun WANG Lu 2007Chinese Science Bulletin2007,52,2:35
4Deep seismic reflection profile across the juncture zone between the Tarim Basin and the West Kunlun Mountains显示文摘Fine structures of the crust and upper mantle of the basin-and-range juncture on the northwestern margin of the Qinghai-Tibetan Plateau are first delineated by the deep seismic reflection profile across the juncture zone between the Tarim Basin and the West Kunlun Mountains. Evidence is found for the northward subduction of the northwest marginal lithosphere of the Qinghai-Tibetan Plateau and its collision with Tarim lithosphere beneath the West Kunlun Mountains. The lithosphere image of the face-to-face subduction and collision determines the coupling relationship between the Tarim Basin and the West Kunlun Mountains at the lithosphere scale and reflects the process of continent- continent collision.GAO Rui HUANG Dongding LU Deyuan QIAN Guihua LI Yingkang KUANG Chaoyang Li Qiusheng LI Pengwu Feng Rujin Guan Ye 2000Chinese Science Bulletin2000,45,24:30
5Oxidative Damage to DNA and Its Relationship With Diabetic Complications显示文摘Objective To detect the oxidative DNA damage in diabetic patients and to investigate the relationship of oxidative DNA damage with diabetes and diabetic nephropathy. Methods Single cell gel electrophoresis(SCGE) was used to detect the DNA strand breaks in peripheral blood lymphocytes,and oxidative DNA damage product and serum 8-OHdG were determined by a competitive ELISA in 47 cases,including 25 patients without diabetic complications,22 patients with diabetic nephropathy and 25 normal control subjects. Results Diabetic patients showed greater oxidative damage to DNA. The percentage of comet cells and the length of DNA migration(comet tail length) of peripheral blood lymphocytes were significantly increased in patients with diabetes,and significantly higher in patients with diabetic nephropathy than in diabetic patients without vascular complications(P<0.05). There was a significant increase in serum 8-OHdG in diabetic patients compared with normal subjects(P<0.05). Moreover,serum 8-OHdG was much higher in patients with diabetic nephropathy than in diabetic patients without vascular complications(P<0.05). Conclusion There is severe oxidative DNA damage in diabetic patients. Enhanced oxidative stress may be associated with diabetes,especially in patients with diabetic nephropathy.HONG-ZHI PAN DONG CHANG LEI-GUANG FENG FENG-JUAN XU HONG-YU KUANG MING-JUN LU 2007Biomedical and Environmental Sciences2007,20,2:23
6The second natural gas hydrate production test in the South China Sea显示文摘Clayey silt reservoirs bearing natural gas hydrates(NGH)are considered to be the hydrate-bearing reservoirs that boast the highest reserves but tend to be the most difficult to exploit.They are proved to be exploitable by the first NGH production test conducted in the South China Sea in 2017.Based on the understanding of the first production test,the China Geological Survey determined the optimal target NGH reservoirs for production test and conducted a detailed assessment,numerical and experimental simulation,and onshore testing of the reservoirs.After that,it conducted the second offshore NGH production test in 1225 m deep Shenhu Area,South China Sea(also referred to as the second production test)from October 2019 to April 2020.During the second production test,a series of technical challenges of drilling horizontal wells in shallow soft strata in deep sea were met,including wellhead stability,directional drilling of a horizontal well,reservoir stimulation and sand control,and accurate depressurization.As a result,30 days of continuous gas production was achieved,with a cumulative gas production of 86.14×104 m3.Thus,the average daily gas production is 2.87×10^4 m^3,which is 5.57 times as much as that obtained in the first production test.Therefore,both the cumulative gas production and the daily gas production were highly improved compared to the first production test.As indicated by the monitoring results of the second production test,there was no anomaly in methane content in the seafloor,seawater,and atmosphere throughout the whole production test.This successful production test further indicates that safe and effective NGH exploitation is feasible in clayey silt NGH reservoirs.The industrialization of hydrates consists of five stages in general,namely theoretical research and simulation experiments,exploratory production test,experimental production test,productive production test,and commercial production.The second production test serves as an important step from the exploratory production test to experimental production test.Jian-liang Ye Xu-wen Qin Wen-wei Xie Hai-long Lu Bao-jin Ma Hai-jun Qiu Jin-qiang Liang Jing-an Lu Zeng-gui Kuang Cheng Lu Qian-yong Liang Shi-peng Wei Yan-jiang Yu Chunsheng Liu Bin Li Kai-xiang Shen Hao-xian Shi Qiu-ping Lu Jing Li Bei-bei Kou Gang Song Bo Li He-en Zhang Hong-feng Lu Chao Ma Yi-fei Dong Hang Bian 2020China Geology2020,3,2:22
7Coexistence of natural gas hydrate,free gas and water in the gas hydrate system in the Shenhu Area,South China Sea显示文摘Shenhu Area is located in the Baiyun Sag of Pearl River Mouth Basin,which is on the northern continental slope of the South China Sea.Gas hydrates in this area have been intensively investigated,achieving a wide coverage of the three-dimensional seismic survey,a large number of boreholes,and detailed data of the seismic survey,logging,and core analysis.In the beginning of 2020,China has successfully conducted the second offshore production test of gas hydrates in this area.In this paper,studies were made on the structure of the hydrate system for the production test,based on detailed logging data and core analysis of this area.As to the results of nuclear magnetic resonance(NMR)logging and sonic logging of Well GMGS6-SH02 drilled during the GMGS6 Expedition,the hydrate system on which the production well located can be divided into three layers:(1)207.8–253.4 mbsf,45.6 m thick,gas hydrate layer,with gas hydrate saturation of 0–54.5%(31%av.);(2)253.4–278 mbsf,24.6 m thick,mixing layer consisting of gas hydrates,free gas,and water,with gas hydrate saturation of 0–22%(10%av.)and free gas saturation of 0–32%(13%av.);(3)278–297 mbsf,19 m thick,with free gas saturation of less than 7%.Moreover,the pore water freshening identified in the sediment cores,taken from the depth below the theoretically calculated base of methane hydrate stability zone,indicates the occurrence of gas hydrate.All these data reveal that gas hydrates,free gas,and water coexist in the mixing layer from different aspects.Xu-wen Qin Jing-an Lu Hai-long Lu Hai-jun Qiu Jin-qiang Liang Dong-ju Kang Lin-sen Zhan Hong-feng Lu Zeng-gui Kuang 2020China Geology2020,3,2:20
8An EcoCity model for regulating urban land cover structure and thermal environment: Taking Beijing as an example显示文摘Urban land-use/cover changes and their effects on the eco-environment have long been an active research topic in the urbanization field. However, the characteristics of urban inner spatial heterogeneity and its quantitative relationship with thermal environment are still poorly understood, resulting in ineffective application in urban ecological planning and management.Through the integration of 'spatial structure theory' in urban geography and 'surface energy balance' in urban climatology, we proposed a new concept of urban surface structure and thermal environment regulation to reveal the mechanism between urban spatial structure and surface thermal environment. We developed the EcoCity model for regulating urban land cover structure and thermal environment, and established the eco-regulation thresholds of urban surface thermal environments. Based on the comprehensive analysis of experimental observation, remotely sensed and meteorological data, we examined the spatial patterns of urban habitation, industrial, infrastructure service, and ecological spaces. We examined the impacts of internal land-cover components(e.g., urban impervious surfaces, greenness, and water) on surface radiation and heat flux. This research indicated that difference of thermal environments among urban functional areas is closely related to the proportions of the land-cover components.The highly dense impervious surface areas in commercial and residential zones significantly increased land surface temperature through increasing sensible heat flux, while greenness and water decrease land surface temperature through increasing latent heat flux. We also found that different functional zones due to various proportions of green spaces have various heat dissipation roles and ecological thresholds. Urban greening projects in highly dense impervious surfaces areas such as commercial, transportation, and residential zones are especially effective in promoting latent heat dissipation efficiency of vegetation, leading to strongly cooling effect of unit vegetation coverage. This research indicates that the EcoCity model provides the fundamentals to understand the coupled mechanism between urban land use structure and surface flux and the analysis of their spatiotemporal characteristics. This model provides a general computational model system for defining urban heat island mitigation, the greening ratio indexes, and their regulating thresholds for different functional zones.KUANG WenHui YANG TianRong LIU AiLin ZHANG Chi LU DengSheng CHI WenFeng 2017Science China Earth Sciences2017,60,6:16
9Distribution of gas hydrate reservoir in the first production test region of the Shenhu area,South China Sea显示文摘In May and July of 2017,China Geological Survey (CGS),and Guangzhou Marine Geological Survey (GMGS)carried out a production test of gas hydrate in the Shenhu area of the South China Sea and acquired a breakthrough of two months continuous gas production and nearly 3.1×10^5 m^3 of production. The gas hydrate reservoir in the Shenhu area of China,is mainly composed of fine-grained clay silt with low permeability,and very difficult for exploitation,which is very different from those discovered in the USA,and Canada (both are conglomerate),Japan (generally, coarse sand)and India (fracture-filled gas hydrate).Based on 3D seismic data preserved-amplitude processing and fine imaging,combined with logging-while-drilling (LWD)and core analysis data,this paper discusses the identification and reservoir characterization of gas hydrate orebodies in the Shenhu production test area.We also describe the distribution characteristics of the gas hydrate deposits and provided reliable data support for the optimization of the production well location.Through BSR feature recognition,seismic attribute analysis, model based seismic inversion and gas hydrate reservoir characterization,this paper describes two relatively independent gas hydrate orebodies in the Shenhu area,which are distributed in the north-south strip and tend to be thicker in the middle and thinner at the edge.The effective thickness of one orebody is bigger but the distribution area is relatively small.The model calculation results show that the distribution area of the gas hydrate orebody controlled by W 18/W 19 is about 11.24 km^2,with an average thickness of 19 m and a maximum thickness of 39 m,and the distribution area of the gas hydrate orebody controlled by W11/W17 is about 6.42 km^2,with an average thickness of 26 m and a maximum thickness of 90 m.Ru-wei Zhang Jing-an Lu Pen-fei Wen Zeng-gui Kuang Bao-jin Zhang Hua Xue Yun-xia Xu Xi Chen 2018China Geology2018,1,4:15
10^(131)I-labeled metuximab combined with chemoembolization for unresectable hepatocellular carcinoma显示文摘AIM:To investigate the safety and effectiveness of combined131I-metuximab and transcatheter arterial chemoembolization(TACE)for hepatocellular carcinoma(HCC).METHODS:One hundred and eighty-five patients(159men and 26 women)with advanced HCC were enrolled in this study from February 2009 to July 2011.There were 95 patients in the combined metuximab and TACE group,and 90 patients in the TACE only group.The patients were followed for 12 mo.Clinical symptoms,blood cell counts,Karnofsky Performance Score(KPS)evaluation and therapeutic effects according to the Response Evaluation Criteria in Solid Tumors were recorded and evaluated.RESULTS:The 1-mo effective rates(complete response+partial response+stable disease)of the test group and control group were 71.23%and 38.89%,respectively(P<0.001).The 6-,9-and 12-mo survival rates were 86.42%,74.07%and 60.49%for the test group and 60.0%,42.22%and 34.44%for the control group(P<0.001).The incidence of adverse events(gastrointestinal symptoms,fever and pain)and blood cell toxicity were significantly higher for the test group than for the control group(P<0.001).No severe131Imetuximab-related complications were identified.With respect to efficacy,patients in the test group had greater improvement in tumor-related pain(P=0.014)and increase in KPS(P<0.001)than those in the control group.CONCLUSION:Combination of131I-metuximab and TACE prolonged the survival time in patients with HCC compared with TACE alone.The combination treatment was safe and effective.Qing He Wu-Sheng Lu Yang Liu Yong-Song Guan An-Ren Kuang 2013World Journal of Gastroenterology2013,19,47:14
11Laparoscopic versus open pancreaticoduodenectomy for pancreatic ductal adenocarcinoma:a propensity score matching analysis显示文摘Background:A growing body of evidence supports the use of laparoscopic pancreaticoduodenectomy(LPD)as an efficient and feasible surgical technique.However,few studies have investigated its applicability in pancreatic ductal adenocarcinoma(PDAC),and the long-term efficacy of LPD on PDAC remains unclear.This study aimed to compare the short-and long-term outcomes between LPD and open pancreaticoduodenectomy(OPD)for PDAC.Methods:The data of patients who had OPD or LPD for PDAC between January 2013 and September 2017 were retrieved.Their postoperative outcomes and survival were compared after propensity score matching.Results:A total of 309 patients were included.After a 2:1 matching,93 cases in the OPD group and 55 in the LPD group were identified.Delayed gastric emptying(DGE),particularly grade B/C DGE,occurred less frequently in the LPD group than in the OPD group(1.8%vs.36.6%,P<0.001;1.8%vs.22.6%,P=0.001).The overall complication rates were significantly lower in the LPD group than in the OPD group(49.1%vs.71.0%,P=0.008),whereas the rates of major complications were similar(10.9%vs.14.0%,P=0.590).In addition,the median overall survival was comparable between the two groups(20.0 vs.18.7 months,P=0.293).Conclusion:LPD was found to be technically feasible with efficacy similar to OPD for patients with PDAC.Wentao Zhou Weiwei Jin Dansong Wang Chao Lu Xuefeng Xu Renchao Zhang Tiantao Kuang Yucheng Zhou Wenchuan Wu Dayong Jin Yiping Mou Wenhui Lou 2019Cancer Communications2019,39,1:14
12Differentiation of intrahepatic cholangiocarcinoma from hepatocellular carcinoma in high-risk patients: a predictive model using contrast-enhanced ultrasound显示文摘AIM To develop a contrast-enhanced ultrasound(CEUS)predictive model for distinguishing intrahepatic cholangiocarcinoma(ICC) from hepatocellular carcinoma(HCC) in high-risk patients.METHODS This retrospective study consisted of 88 consecutive high-risk patients with ICC and 88 high-risk patients with HCC selected by propensity score matching between May 2004 and July 2016. Patients were assigned to two groups, namely, a training set and validation set, at a 1:1 ratio. A CEUS score for diagnosing ICC was generated based on significant CEUS features. Then, a nomogram based on the CEUS score was developed, integrating the clinical data. The performance of the nomogram was then validated and compared with that of the LR-M of the CEUS Liver Imaging Reporting and Data System(LI-RADS).RESULTS The most useful CEUS features for ICC were as follows: rim enhancement(64.5%), early washout(91.9%), intratumoral vein(58.1%), obscure boundary of intratumoral non-enhanced area(64.5%), and marked washout(61.3%, all P < 0.05). In the validation set, the area under the curve(AUC) of the CEUS score(AUC = 0.953) for differentiation between ICC and HCC was improved compared to the LI-RADS(AUC = 0.742)(P < 0.001). When clinical data were added, the CEUS score nomogram was superior to the LI-RADS nomogram(AUC: 0.973 vs 0.916, P = 0.036, Net Reclassification Improvement: 0.077, Integrated Discrimination Index: 0.152). Subgroup analysis demonstrated that the CEUS score model was notably improved compared to the LIRADS in tumors smaller than 5.0 cm(P < 0.05) but not improved in tumors smaller than 3.0 cm(P > 0.05).CONCLUSION The CEUS predictive model for differentiation between ICC and HCC in high-risk patients had improved discrimination and clinical usefulness compared to the CEUS LIRADS.Li-Da Chen Si-Min Ruan Jin-Yu Liang Zheng Yang Shun-Li Shen Yang Huang Wei Li Zhu Wang Xiao-Yan Xie Ming-De Lu Ming Kuang Wei Wang 2018World Journal of Gastroenterology2018,24,33:14
13Association of BrERF72 with methyl jasmonate-induced leaf senescence of Chinese flowering cabbage through activating JA biosynthesis-related genes显示文摘The ethylene response factor(ERF)and phytohormone jasmonate(JA)are reported to function in leaf senescence.The involvement of ERF in JA-mediated leaf senescence,however,needs to be elucidated.In the present work,we demonstrate a Chinese flowering cabbage ERF transcription factor(TF),BrERF72,that is associated with JA-promoted leaf senescence.Exogenous application of methyl jasmonate(MeJA)-accelerated leaf senescence of Chinese flowering cabbage,evidenced by the data that MeJA treatment led to the stronger reduction in the maximum quantum yield(Fv/Fm),photosynthetic electron transport rate(ETR),and total chlorophyll content,while significant induction in the expression of several senescence-associated genes(SAGs)including BrSAG12,BrSAG19,and chlorophyll catabolic genes(CCGs)BrPAO1,BrNYC1,BrPPH1,and BrSGR1.Increases in levels of endogenous JA and transcripts of JA biosynthetic genes BrLOX4,BrAOC3,and BrOPR3 were also found after MeJA treatment.BrERF72 was a MeJA-inducible,nucleus-localized protein,and possessed trans-activation ability.Transient overexpression of BrERF72 in tobacco leaves also promoted leaf senescence.More importantly,further experiments revealed that BrERF72 directly activated expression of BrLOX4,BrAOC3,and BrOPR3 through binding to their promoters via the GCC or DRE/CRT cis-element.Together,the novel JA-ERF association reported in our study uncovers a new insight into the transcriptional regulation of JA production mediated by ERF during JA-promoted leaf senescence in Chinese flowering cabbage.Xiao-li Tan Zhong-qi Fan Wei Shan Xue-ren Yin Jian-fei Kuang Wang-jin Lu Jian-ye Chen 2018Horticulture Research2018,5,1:14
14The WRKY transcription factor HpWRKY44 regulates CytP450-like1 expression in red pitaya fruit(Hylocereus polyrhizus)显示文摘Red pitaya(Hylocereus polyrhizus)fruit is a high-value,functional food,containing a high level of betalains.Several genes potentially related to betalain biosynthesis,such as cytochrome P450-like(CytP450-like),have been identified in pitaya fruit,while their transcriptional regulation remains unclear.In this work,the potential involvement of a WRKY transcription factor,HpWRKY44,in regulating CytP450-like1 expression in pitaya fruit was examined.HpWRKY44,a member of the Group 1 WRKY family,contains two conserved WRKY motifs and is localized in the nucleus.HpWRKY44 also exhibits trans-activation ability.Gene expression analysis showed that the expression of HpCytP450-like1 and HpWRKY44 increased steadily during pitaya fruit coloration,which corresponded with the production of elevated betalain levels in the fruit.HpWRKY44 was also demonstrated to directly bind to and activate the HpCytP450-like1 promoter via the recognition of the W-box element present in the promoter.Collectively,our findings indicate that HpWRKY44 transcriptionally activates HpCytP450-like1,which perhaps,at least in part,contributes to betalain biosynthesis in pitaya fruit.The information provided in the current study provides novel insights into the regulatory network associated with betalain biosynthesis during pitaya fruit coloration.Mei-nv Cheng Zi-juan Huang Qing-zhu Hua Wei Shan Jian-fei Kuang Wang-jin Lu Yong-hua Qin Jian-ye Chen 2017Horticulture Research2017,4,1:13
15Cropland redistribution to marginal lands undermines environmental sustainability显示文摘Cropland redistribution to marginal land has been reported worldwide;however,the resulting impacts on environmental sustainability have not been investigated sufficiently.Here we investigated the environmental impacts of cropland redistribution in China.As a result of urbanization-induced loss of high-quality croplands in south China(~8.5 t ha^(-1)),croplands expanded to marginal lands in northeast(~4.5 t ha^(-1)) and northwest China(~2.9 t ha^(-1)) during 1990-2015 to pursue food security.However,the reclamation in these low-yield and ecologically vulnerable zones considerably undermined local environmental sustainability,for example increasing wind erosion(+3.47%),irrigation water consumption(+34.42%),fertilizer use(+20.02%) and decreasing natural habitats(-3.11%).Forecasts show that further reclamation in marginal lands per current policies would exacerbate environmental costs by 2050.The future cropland security risk will be remarkably intensified because of the conflict between food production and environmental sustainability.Our research suggests that globally emerging reclamation of marginal lands should be restricted and crop yield boost should be encouraged for both food security and environmental benefits.Wenhui Kuang Jiyuan Liu Hanqin Tian Hao Shi Jinwei Dong Changqing Song Xiaoyong Li Guoming Du Yali Hou Dengsheng Lu Wenfeng Chi Tao Pan Shuwen Zhang Rafiq Hamdi Zherui Yin Huimin Yan Changzhen Yan Shixin Wu Rendong Li Jiuchun Yang Yinyin Dou Wenbin Wu Liqiao Liang Bao Xiang Shiqi Yang 2022National Science Review2022,9,1:13
16Changes in aortic endothelium ultrastructure in male rats following castration, replacement with testosterone and administration of 50α-reductase inhibitor显示文摘瞄准:调查在低雄激素水平和脉管的内皮细胞层的超微结构之间的关系。方法:48 只男 Sprague-Dawley 老鼠随机被划分成四个组:组 A,有假冒的阉割的正常老鼠;组 B,阉割的老鼠;组 C,给睾丸激素(T) undecanoate 的阉割的老鼠;并且组织 D,与 5 α - reductase 禁止者对待的未经触动的老鼠。在 10 星期处理或阉割以后,在不同的组的老鼠被打死,浆液 T,免费 T (英尺) 和 dihydrotestosterone (DHT ) 被测量。大动脉的 endothelia 在电子缩微本下面被扫描,脉管的内皮细胞层结构分数(VESS ) 被计算。结果:在组 B 的老鼠的浆液 T 和英尺集中是比另外的三个组的那些显著地低的(P < 0.01 ) ;组 D 老鼠的 DHT 集中显著地被减少(P < 0.01 ) 什么时候与那些相比组 A 和 C。在组 B 和 D 老鼠的老鼠(与低雄激素层次) 他们的 endothelial 表面的有的明显的损坏,它出现了成波形,不平,粘合剂并且破裂,并且有 VESS 的高破坏。结论:这些结果建议 T 和 DHT 的低集中在雄的老鼠与大动脉的 endothelia 的极端结构的损坏被联系。Ying-Li Lu Lin Kuang Hui Zhu Hui Wu Xue-Fang Wang Yu-Ping Pang Ning-Jian Wang Dan-Lu Yu 2007Asian Journal of Andrology2007,9,6:13
17Adaptive subsequence adjustment with evolutionary asymmetric path-relinking for TDRSS scheduling显示文摘Due to the limited transmission resources for data relay in the tracking and data relay satellite system(TDRSS), there are many job requirements in busy days which will be discarded in the conventional job scheduling model. Therefore, the improvement of scheduling efficiency in the TDRSS can not only help to increase the resource utilities, but also to reduce the scheduling failure ratio.A model of nonhomogeneous parallel machines scheduling problems with time window(NPM-TW) is firstly built up for the TDRSS,considering the distinct features of the variable preparation time and the nonhomogeneous transmission rates for different types of antennas on each tracking and data relay satellite(TDRS). Then,an adaptive subsequence adjustment(ASA) framework with evolutionary asymmetric path-relinking(Ev APR) is proposed to solve this problem, in which an asymmetric progressive crossover operation is involved to overcome the local optima by the conventional job inserting methods. The numerical results show that, compared with the classical greedy randomized adaptive search procedure(GRASP) algorithm, the scheduling failure ratio of jobs can be reduced over 11% on average by the proposed ASA with EvAPR.Peng Lin Linling Kuang Xiang Chen Jian Yan Jianhua Lu Xiaojuan Wang 2014Journal of Systems Engineering and Electronics2014,25,5:12
18Remote sensing-based artificial surface cover classification in Asia and spatial pattern analysis显示文摘Artificial surfaces, characterized with intensive land-use changes and complex landscape structures, are important indicators of human impacts on terrestrial ecosystems. Without high-resolution land-cover data at continental scale, it is hard to evaluate the impacts of urbanization on regional climate, ecosystem processes and global environment. This study constructed a hierarchical classification system for artificial surfaces, promoted a remote sensing method to retrieve subpixel components of artificial surfaces from 30-m resolution satellite imageries(Globe Land30) and developed a series of data products of high-precision urban built-up areas including impervious surface and vegetation cover in Asia in 2010. Our assessment, based on multisource data and expert knowledge, showed that the overall accuracy of classification was 90.79%. The mean relative error for the impervious surface components of cities was 0.87. The local error of the extracted information was closely related to the heterogeneity of urban buildings and vegetation in different climate zones. According to our results, the urban built-up area was 18.18×104 km2, accounting for 0.59% of the total land surface areas in Asia; urban impervious surfaces were 11.65×104 km2, accounting for 64.09% of the total urban built-up area in Asia. Vegetation and bare soils accounted for 34.56% of the urban built-up areas. There were three gradients: a concentrated distribution, a scattered distribution and an indeterminate distribution from east to west in terms of spatial pattern of urban impervious surfaces. China, India and Japan ranked as the top three countries with the largest impervious surface areas, which respectively accounted for 32.77%, 16.10% and 11.93% of the urban impervious surface area of Asia. We found the proportions of impervious surface and vegetation cover within urban built-up areas were closely related to the economic development degree of the country and regional climate environment. Built-up areas in developed countries had relatively low impervious surface and high public green vegetation cover, with 50–60% urban impervious surfaces in Japan, South Korea and Singapore. In comparison, the proportion of urban impervious surfaces in developing countries is approaching or exceeding 80% in Asia. In general, the composition and spatial patterns of built-up areas reflected population aggregation and economic development level as well as their impacts on the health of the environment in the sub-watershed.KUANG WenHui CHEN LiJun LIU JiYuan XIANG WeiNing CHI WenFeng LU DengSheng YANG TianRong PAN Tao LIU AiLin 2016Science China Earth Sciences2016,59,9:12
19Molecular Characterization of a Leaf Senescence-Related Transcription Factor BrWRKY75 of Chinese Flowering Cabbage显示文摘WRKY is a plant-specific transcription factor(TF) involved in the regulation of many biological processes; however, its role in leaf senescence of leafy vegetables remains unknown. In the present work, a WRKY TF, termed Br WRKY75 was isolated from Chinese flowering cabbage [Brassica rapa L. ssp. chinensis(L.) Mokino var. utilis Tsen et Lee]. Analysis of deduced amino acid sequence and the phylogenetic tree showed that Br WRKY75 has high homology with WRKY75 from Brassica oleracea and Arabidopsis thaliana, and belongs to the II c sub-group. Sub-cellular localization and transcriptional activity analysis revealed that Br WRKY75 is a nuclear protein with transcriptional repression activity, and was up-regulated during leaf senescence. Electrophoretic mobility shift assay confirmed that Br WRKY75 directly bound to the W-box(TTGAC) cis-element. Collectively,these results provide a basis for further investigation of the transcriptional regulation of Chinese flowering cabbage leaf senescence.TAN Xiaoli FAN Zhongqi LI Lulu WU Ya KUANG Jianfei LU Wangjin CHEN Jianye 2016Horticultural Plant Journal2016,2,5:11
20The formation and evolution of Chepaizi-Mosuowan paleo-uplift and its control on the distributions of sedimentary facies in the Junggar Basin显示文摘The Chepaizi-Mosuowan paleo-uplift is a large-scale uplift stretching across the Junggar Basin formed during the Yanshanian. It has experienced four evolutionary stages: the initial forming stage (J1), the intense development stage (J2+3), the waning and burial stage (K-E), and the tilting and extinction stage (N-Q). The most intense period of activities is the Middle Jurassic. Dur-ing the Early Jurassic, the Chepaizi-Mosuowan paleo-structure was a low amplitude uplift. Because of the subsequent strong uplifting during Middle-Late Jurassic, the Middle and Upper Jurassic were eroded. With the evolution of the Chepaizi-Mosuowan paleo-uplift, the sedimentary pattern of the basin changed, and the paleo-uplift separated the northern depositional systems from those in the south side. As a result, the basin tectonics controlled the distribution and evolution of the depositional systems. During Early Jurassic, while the paleo-uplift was low, its controlling effect on depositional systems was limited and sediments coming from the northwest could reach the central and southern parts of the basin. With the strong uplifting of the Chepaizi-Mosuowan paleo-structure during Middle-Late Jurassic, sediments from the northwest provenance could only deposit in the northern graben of the paleo-uplift. The intense erosion of the Middle-Upper Jurassic also changed the former sedimentary center of the basin into a source area, supplying sediments for grabens on both sides of the paleo-uplift. In the Cretaceous, regional subsidence caused the paleo-uplift to be buried again and subsequently sediments accumulated on top of it. The depositional facies are dominated by fluvial in the Early Cretaceous and shallow lacustrine to deltaic in the Late Cretaceous. In the history of the long-lasting development of this paleo-uplift, large-scale erosions of the paleohigh not only provided sufficient sediments to the center of the Junggar Basin, but also created favorable conditions for the formation of various subtle traps such as lithologic and stratigraphic traps.JI YouLiang ZHOU Yong KUANG Jun WAN Lu ZHANG Rui LU ChunHong 2010Science China Earth Sciences2010,53,6:10
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