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673篇 您的检索式:作者名="B. Li"
    题名 作者 年代 出处 被引量
1Mesenchymal stem cells over-expressing hepatocyte growth factor improve small-for-size liver grafts regeneration显示文摘Yu, Y. Yao, A. H. Chen, N. Pu, L. Y. Fan, Y. Lv, L. Sun, B. C. Li, G. Q. Wang, X. H. 2007南京医科大学学报(自然科学版)2007,27,10:45
2A community-derived classification for extant lycophytes and ferns显示文摘发展史长通知了蕨类植物分类。当我们推断进化的树的能力改善了,针对认出生来的组的分类变得逐渐地预兆、稳定。这里,我们为 lycophytes 和蕨纲植物提供一个现代、全面分类,在下面,利用一条基于社区的途径类水平。我们 monophyly 用作主要标准让 taxa,而且目的识别保存两个广泛地被接受的存在 taxa 和界限并且与我们蕨类植物发展史的理解一致。总共,这个分类对待一在 337 个类, 51 个家庭, 14 目,和二个班估计了 11  916 种类。这个分类没在 lycophyte 和蕨纲植物上作为最后的词被打算分类,而是当前的假设的概括陈述,源于最好的可得到的数据并且在问题由熟悉植物的那些大多数塑造了。我们希望它将在蕨类植物上为最近的文学的那些想要的参考用作一个资源发展史和分类,为指导未来调查的一个框架,和推进讲话的刺激。Eric Schuettpelz Harald Schneider Alan R. Smith Peter Hovenkamp Jefferson Prado Germinal Rouhan Alexandre Salino Michael Sundue Thafs Elias Almeida Barbara Parris Emily B. Sessa Ashley R. Field Andre Luis de Gasper Carl J. Rothfels Michael D. Windham Marcus Lehnert Benjamin Dauphin Atsushi Ebihara Samuli Lehtonen Pedro Bond Schwartsburd Jordan Metzgar Li-Bing Zhang Li-Yaung Kuo Patrick J. Brownsey Masahiro Kato Marcelo Daniel Arana Francine C. Assis Michael S. Barker David S. Barrington Ho-Ming Chang Yi-Han Chang Yi-Shan Chao Cheng-Wei Chen De-Kui Chen Wen-Liang Chiou Vinicius Antonio de Oliveira Dittrich Yi-Fan Duan Jean-Yves Dubuisson Donald R. Farrar Susan Fawcett Jose Maria Gabriel y Galan Luiz Armando de Araujo Goes-Neto Jason R. Grant Amanda L. Grusz Christopher Haufler Warren Hauk Hai He Sabine Hennequin Regina Yoshie Hirai Layne Huiet Michael Kessler Petra Korall Paulo H. Labiak Anders Larsson Blanca Leen Chun-Xiang Li Fay-Wei Li Melanie Link-Perez Hong-Mei Liu Ngan Thi Lu Esteban I. Meza-Torres Xin-Yuan Miao Robbin Moran Claudine Massi Mynssens Nathalie Nagalingum Benjamin Ollgaard Alison M. Paul Jovani B. de S. Pereira Leon R. Perrie Monica Ponce Tom A. Ranker Christian Schulz Wataru Shinohara Alexander Shmakov Erin M. Sigel Filipe Soares de Souza Lana da Silva Sylvestre Weston Testo Luz Amparo Triana-Moreno Chie Tsutsumi Hanna Tuomisto IvAn A. Valdespino Alejandra Vasco Raquel Stauffer Viveros Alan Weakley Ran Wei Stina Weststrand Paul G. Wolf George Yatskievych Xiao-Gang Xu Yue-Hong Yan Liang Zhang Xian-Chun Zhang Xin-Mao Zhou 2016Journal of Systematics and Evolution2016,54,6:44
3REE geochemistry of suspended sediments from the rivers around the Yellow Sea and provenance indicators显示文摘Rare earth element (REE) compositions of the suspended sediments from the rivers around the Yellow Sea were different in that Korean river sediments (Han, Keum and Yeongsan Rivers) yield stronger fractionations than Chinese river sediments (Changjiang, Huanghe and Yalujiang), shown by obvious enrichments of LREE (light rare earth element) relative to UCC (upper continental crust). Variations of source rock compositions in the drainage basins are responsible for the differences of REE compositions between the river sediments. REE fractionation parameters including (La/Yb)UCC and (Gd/Yb)UCC as well as the ratios of La/Sc and Th/Sc can be treated as proper proxies for identifying the Chinese river sediments from those Korean river matters, and furthermore, for studying the provenances and paleoenvironmental changes of the marginal seas of China.YANG Shouye LI Congxian C. B. Lee T. K. Na 2003Chinese Science Bulletin2003,48,11:30
4Biodegradation of Crude Oil in Contaminated Soils by Free and Immobilized Microorganisms显示文摘The effciencies of free and immobilized bacterial cultures of petroleum hydrocarbon degraders were evaluated and compared in this study. Hydrocarbon-degrading microbial communities with high tolerance to and high degrading ability of crude oil were obtained from the soil contaminated with crude oil in the Yellow River Delta. Then, the microbial cells were immobilized in sodium alginate (SA) beads and sodium alginate-diatomite (SAD) beads. The biodegradation of crude oil in soil by immobilized cells was compared with that by free cells at three inoculation concentrations, 1 × 104 colony forming units (cfu) kg-1 (low concentration, L), 5 × 104 cfu kg-1 (medium concentration, M), and 1 × 105 cfu kg-1 (high concentration, H). At 20 d after inoculation, the maximum degradation rate in the immobilized systems reached 29.8% (SAD-M), significantly higher (P < 0.05) than that of the free cells (21.1%), and the SAD beads showed greater degradation than the SA beads. Moreover, both microbial populations and total microbial activity reached significantly higher level (P < 0.05) in the immobilized systems than free cell systems at a same initial inoculation amount. The scanning electronic microscope (SEM) images also confirmed the advantages of the immobilized microstructure of SAD beads. The enhanced degradation and bacterial growth in the SAD beads indicated the high potential of SAD beads as an effective option for bioremediation of crude oil-contaminated soils in the Yellow River Delta.WANG Zhen-Yu XU Ying WANG Hao-Yun ZHAO Jian GAO Dong-Mei LI Feng-Min B. XING 2012Pedosphere2012,22,5:28
5GIS-based risk analysis of debris flow:an application in Sichuan,southwest China显示文摘Debris flow is a serious geologic hazard in China.It is estimated that nationally debris flows cause up to 2 billion RMB(250 million US$) in damages and 300-600 deaths and injuries annually.To mitigate debris flow hazards,it is necessary to map,model,and identify zones of debris flow hazards and vulnerability as to inform the local people about the potential risk with a geographic information system.This research presents a regional scale case study modeling debris flow risk(hazard and vulnerability) in Sichuan Province,Southwestern China.In this area,3,290 debris flows have been identified and the spatial-temporal distribution and activity characteristics of them have been documented.Based on the available meteorological data,a Digital Elevation Model with the rate of 1:250,000 and a regional geological map,the 24-hr rainfall threshold(y) for debris flow occurrence is closely related(significant at 99% confidence level) to the index(x) defined using a geology factor(rock hardness:a) and a topographical factor(channel gradient:d) where y = 21 + 10200 / x,in which x = 2.7 × ea + 1000 × d.The discipline is constructive in developing the rainfall threshold for debris flow activity in remote mountainous areas that lack data.For a given watershed,a four-level debris flow hazard map is developed by comparing the rainfall threshold to the design rainfall intensities with 50-,20-,and 5-year average recurrence intervals,respectively.The degree of debris flow vulnerability is determined by the watershed socio-economic conditions.A four-class debris flow risk map,at the final phase of the research,is generated by combining debris flow hazards and vulnerability.With the debris flow risk assessment,the Sichuan Province is classified into the slight,moderate,severe and very severe regions,which accounts for 36%,19%,20% and 25% of total area respectively.B. F. DI N. S. CHEN P. CUI Z. L. LI Y. P. HE Y. C. GAO 2008International Journal of Sediment Research2008,23,2:19
6Mycoplasma infections and different human carcinomas显示文摘AIM To explore relationships between human carcinomas and mycoplasma infection.METHODS Monoclonal antibody PD4, which specifically recognizes a distinct protein from mycoplasma hyorhinis, was used to detect mycoplasma infection in different paraffinembedded carcinoma tissues with immunohistochemistry. PCR was applied to amplify the mycoplasma DNA from the positive samples for confirming immunohistochemistry.RESULTS Fifty of 90 cases (56%) of gastric carcinoma were positive for mycoplasma hyorhinis. In other gastric diseases, the mycoplasma infection ratio was 28% (18/49) in chronic superficial gastritis, 30% (14/ 46) in gastric ulcer and 37% (18/ 49) in intestinal metaplasia. The difference is significant with gastric cancer (X2=12.06, P<0.05). In colon carcinoma, the mycoplasma infection ratio was 55.1% (32/58), but it was 20.9% (10/49) in adenomarous polyp (X2=13.46, P<0.005).Gastric and colon cancers with high differentiation had a higher mycoplasma infection ratio than those with low differentiation (P< 0.05). Mycoplasma infection in esophageal cancer, lung cancer, breast cancer and glioma was 50.9% (27/53), 52.6% (31/ 59), 39.7%(25/63) and 41% (38/91), respectively. The mycoplasma DNA was successfully amplified with the DNA extracted from the cancer tissues that were positive for mycoplasma infection (detected with antibody PD4).CONCLUSION There was high correlation between mycoplasma infection and different cancers, which suggests the possibility of an association between the two. The mechanism involved in oncogenesis by mycoplasma remains unknown.Su Huang Ji You Li Jan Wu Lin Meng Cheng Chao Shou Beijing Institute for Cancer Research, Peking University School of Oncology, Beijing 100034. ChinaSu Huang, received B. A from Jiangxi Medical College of China in 1994. Now she is a graduate student pursuing a Ph. D degree at the Peking University School of Oncology. 2001World Journal of Gastroenterology2001,7,2:18
7THE INFLUENCE OF CAVITY DAMAGE ON MECHANICAL PROPERTIES OF SUPERPLASTICALLY-DEFORMED MATERIALS AND ITS PREDICTION显示文摘Aluminium alloy LY12CZ sheet without any pre-treatment has been used to study the influence of cavity damage on the mechanical properties of the superplastically-deformed materials room temper- ature. The experimental results show that: (1) the lower the rate of cavitation as the superplastic strain increases, the higher the superplasticity is; (2) the mechanical properties of superplastically- deformed materials at room temperature decrease as the superplastically-deformed strain increases, especially, a noteworthy decrease in elasticity modulus, yield strenth and ultimate strength at room temperature begins to appear as the level of cavitation by area comes up to about 4%, while at the same level the reduction in area drops down a very large quantity. Then, a three-layer back- propagation neural network has been developed to predict the machanichl properties of the superplasti- cally-deformed material.The results acquired from the neural network are veryM. B. Liu, Z. C. Zhao,H. Gao,M. Q. Li and S. C. Wu College of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China 2000Acta Metallurgica Sinica(English Letters)2000,13,2:18
8The b2/b3 subdeletion shows higher risk of spermatogenic failure and higher frequency of complete AZFc deletion than the gr/gr subdeletion in a Chinese population显示文摘Lu, C. C. Zhang, J. Li, Y. C. Xia, Y. K. Zhang, F. Wu, B. Wu, W. Ji, G. X. Gu, A. H. Wang, S. L. Jin, L. Wang, X. R. 2009南京医科大学学报(自然科学版)2009,29,4:16
9EFFECT OF COPPER AND BORON CONTENT ON STRAIN-INDUCED Nb(C,N) PRECIPITATION IN ULCB STEELS AT HOT DEFORMATION TEMPERATURE显示文摘The stress relaxation curves of Ultra-Low Carbon Bainitic(ULCB) steels with different Cu and B contents were measured by using Gleeble-1500 dynamic thermal-mechanical simulator. The results show that Cu and B added can accelerate the strain-induced precipitation reaction, and the effect of Cu and B is even more obvious with Cu and B combined addition or Cu content increased. The TEM analysis of precipitate engendered at the temperature of 850℃ C indicate that Nb(C,N) precipitate nucleates dominantly on the dislocation line, and grows with holding time extended while the precipitate particle size increases from 5 nm to 17 nm.G.F. Zhou, M. B. Wen, P. H. Li and X. L. He 1) National Enterprise Technology Center, Wuhan Iron & Steel Group Co., Wuhan 430080, China 2) University of Science and Technology Beijing, Beijing 100083, China 2000Acta Metallurgica Sinica(English Letters)2000,13,2:16
10Surgical decompression in acute spinal cord injury: A review of clinical evidence, animal model studies, and potential future directions of investigation显示文摘为在尖锐针的绳索损害(SCI ) 的治疗的目标是减少第二等的损坏的程度并且便于神经新生和功能的恢复。尽管多重研究为尖锐 SCI 的治疗调查了潜在的新治疗,结果和管理协议在病人在改善瞄准了神经损害仍然保持无效。更最近的临床、基本的科学研究显示了外科的干预是为治疗的一种潜在地珍贵的形式;然而,角色并且外科的解压缩预定除了最佳的外科的干预,仍然是与尖锐 SCI 的外科的治疗相关的最争论的话题之一。当越来越多的潜在的治疗形式出现,动物模型为调查它的临床的申请和翻译进人的审判是枢轴的。这评论极其估价可得到的文学让临床、基本的科学研究加亮调查的程度考虑的那发生的、特定的治疗,和为未来研究的潜在的区域。Yiping LI Chandler L. WALKER Yi Ping ZHANG Christopher B. SHIELDS Xiao-Ming XU 2014Frontiers in Biology2014,9,2:14
11Three-Dimensional Geometrical Modelling of Wild Boar Head by Reverse Engineering Technology显示文摘In this paper, a wild boar head was taken as the bionic research object for the development of new ridgers, a kind of plough. The reverse engineering technology was adopted to obtain the surface geometrical information of the head. Several three-dimensional (3D) point clouds of the head were captured first using a non-touch laser scanner, and an integrated point cloud was generated by aligning these point clouds using UG/Imageware. Then, the digital surface model of the head was rebuilt by means of CATIA. The characteristic curves of the surface model were analyzed. The results show that the average error between the rebuilt surface and the point cloud is ?0.431 mm. The max curvature of the ridge on the neb of the head is 0.187 mm?1, and the max and min Gauss curvatures on the surface are 0.008 mm?2 and ?0.002 mm?2. These geometrical information are the essential parameters for biomimetics study of the ridger.Liang Xn Min-xu Lin Jian-qiao Li Zhao-liang Wang B. Chirende 2008Journal of Bionic Engineering2008,5,1:13
12Nature:研究鉴定出蛋白Nlrp9b抵抗轮状病毒感染机制显示文摘轮状病毒(rotavirus)是婴儿和儿童罹患肠胃炎和腹泻的一种最为常见的原因,每年导致全世界大约21.5万人死亡。它是高度传染性的和潜在致命性的。这种病毒特异性地感染宿主小肠中的肠上皮细胞,并且已进化出抵抗干扰素和NF-KB信号的策略来躲避免疫系统,这就提出一个问题:其他的宿主因子是否参与肠道粘膜中的抗病毒反应。不过,针对体内(特别是通过NLR炎性体)检测和限制肠道病毒的机制,人们知之甚少。Shu Zhu, Zheng Wei, Noah W. Palm, Yi Yang, Hua Yu, Hua-Bing Li, Geng Wang, Xuqiu Lei, Marcel R. de Zoete, Jun Zhao, Yunjiang Zheng, Haiwei Chen, Liang Shan, Richard A. Flavell Siyuan Ding, Ningguo Feng, Harry B. Greenberg Siyuan Ding, Harry B. Greenberg Penghua Wang, Yujiao Zhao Wen Pan, Jun Lu Jun Zhao, Yuval Kluger Kellie A. Jurado, Clara Abraham, Erol Fikrig Erol Fikrig, Richard A. Flavell 2017现代生物医学进展2017,17,27:10
13Infection of hepatitis B virus in extrahepatic endothelial tissues mediated by endothelial progenitor cells显示文摘Rong, Q. F. Huang, J. Su, E. B. Li, J. Li, J. Y. Zhang, L. L. Cao, K. J. 2007南京医科大学学报(自然科学版)2007,27,10:9
14Auxin as a Model for the Integration of Hormonal Signal Processing and Transduction显示文摘植物生长的规定对许多刺激作出回应。这些回答允许环境改编,从而增加的健康。在许多情况中,植物的环境的信息的继电器通过植物荷尔蒙。这些送信人把环境信息集成到发展小径决定植物形状。这评论愿望使用作为一个例子,在 Arabidopsis thaliana 到的根的植物生长素说明神经质的信号处理和 transduction 的复杂性质。它那么将做一条系统生物学途径的申请是必要的盒子,如果在植物的环境和它的 growth/developmental 回答之间的关系将适当地被理解。W.D. Teale F.A. Ditengou A.D. Dovzhenko X. Li A.M. Molendijk B. Ruperti I. Paponov K. Palme 2008Molecular Plant2008,1,2:8
15Efficacy and safety of FIREHAWK abluminal groove filled biodegradable polymer sirolimus-eluting stents for the treatment of long coronary lesions: nine-month angiographic and one-year clinical results from TARGET I trial lona cohort显示文摘XU Bo GAO Run-lin ZHANG Rui-yan WANG Hai-chang LI Zhan-quan YANG Yue-jin MA Chang-sheng HAN Ya-ling Alexandra J. Lansky HUO Yong LI Wei Martin B. Leon 2013Chinese Medical Journal2013,,6:8
16Thermoelectric transport across graphene/hexagonal boron nitride/graphene heterostructures显示文摘我们越过 graphene/hexagonal 硼氮化物(h-BN ) 报导热电的运输大小 /graphene heterostructure 设备。用一种交流占据技术,我们能分开热电的贡献到这些重要设备结构的 IV 特征。温度坡度用拉曼光谱学光学地被测量,它使我们能探索在材料接口生产的热电的运输,越过就 12 nm 的长度规模。基于观察热电的电压(V) 和温度坡度(T) , 99.3 V/K 的一个 Seebeck 系数为 heterostructure 设备被查明。获得的 Seebeck 系数能为在新兴的 2D heterostructure 设备的跨飞机的 IV 行为理解热电的部件是有用的。这些结果提供一条途径给在二维的分层的 heterostructures 探查热电的精力变换。Chun-Chung Chen Zhen Li Li Shi Stephen B. Cronin 2015Nano Research2015,8,2:8
17Impact of Long-Term Alfalfa Cropping on Soil Potassium Content and Clay Minerals in a Semi-Arid Loess Soil in China显示文摘Alfalfa cropping has been considered an efficient method of increasing soil fertility.Usually nitrogen increase in root nodules is considered to be the major beneficial effect.A 21-year time series (five sampling periods) of alfalfa cultivation plots on a loess soil,initially containing illite and chlorite,in Lanzhou of northwestern China was selected to investigate the relationships among alfalfa cropping,soil potassium (K) content and soil clay minerals.The results indicated that soil K significantly accumulated after cropping,with a peak value at about 15 years,and decreased afterwards.The accumulated K was associated with the K increase in the well-crystallized illite,which was not extracted by the traditional laboratory K extraction methods in assessing bioavailability.The steep decline in soil K content after 15-year cropping was in accord with the observed fertility loss in the alfalfa soil.Plant biomass productivity peaked at near 9 years of culture,whereas soil K and clay minerals continued to increase until cropping for 15 years.This suggested that K increased in the topsoil came from the deep root zone.Thus alfalfa continued to store K in clays even after peak production occurred.Nitrogen did not follow these trends,showing a general decline compared with the native prairie soils that had not been cropped.Therefore,the traditional alfalfa cropping can increase K content in the topsoil.LI De-Cheng B. VELDE LI Feng-Min ZHANG Gan-Lin ZHAO Ming-Song HUANG Lai-Ming 2011Pedosphere2011,21,4:6
18Dynamic Characteristics of Granite Subjected to Intermediate Loading Rate显示文摘X. B. Li T. S. Lok J. Zhao 2005Rock Mechanics and Rock Engineering2005,,1:5
19Effects of Boron Addition on Grain Refinement in TiAl-based Alloys显示文摘Solid state phase transformation characteristics of the body centred β(Ti) into the hexagonal closed packed α(Ti) in Ti45Al8Nb-(0, 0.3, 0.5 and 0.8 at. pct) B alloys were investigated by heat treatment to clarify γ/α2 lamellar microstructure refinement induced by B addition. Experimental results confirmed two kinds of boron-reduced grain refinement mechanisms through refining either β phase then α phase (β-refinement) or α phase directly (α-refinement) to refine lamellar microstructure at room temperature; however, the role of α-refinement dominated the as-cast lamellar microstructure refinement over β-refinement in Ti45Al8NbxB alloy. It was also found that during the α-refinement the convoluted flake- and plate-like borides along β grain boundaries assisted nucleation of α phase, and the particle-like borides near β grain boundaries impeded α phase growth.W.D. Wang,Y.C. Ma,B. Chen,M. Gao,K. Liu and Y.Y. Li Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China 2010Journal of Materials Science & Technology2010,26,7:5
20The Level of Expression of Thioredoxin is Linked to Fundamental Properties and Applications of Wheat Seeds显示文摘有谷物(大麦和小麦) 和荚(Medicago truncatula ) 的工作作为种子的中央规章的蛋白质建立了 thioredoxin h (Trx h ) 。Trx h 由减少二硫化物(SS ) 扮演一些多样的种子蛋白质(存储蛋白质,酶,和酶禁止者) ,从而便于萌芽。早,在 vitro,蛋白质研究与有在内乳的 Trx h overexpressed 的大麦种子在显示出加速的萌芽和联系的酶(淀粉酶和 pullulanase ) 的早或提高的表示的实验被补充。当前的学习扩大转基因的工作到小麦。二条途径被跟随在内乳改变 Trx h 基因的表示:(1 ) 一个大麦蛋白倡导者和它指向顺序的蛋白质身体导致了 Trx h5 的 overexpression,并且(2 ) Trx h9 的 antisense 构造导致了那基因(Arabidopsis 指明) 的 cytosolic underexpression。Trx h9 的 Underexpression 导致了对在萌芽的 barleyretardation 为 overexpression Trx h5 观察并且推迟了或减少联系的酶的表示的那些相反的效果。类似的酶变化在开发种子被观察。有 underexpressed Trx 的小麦线看了发芽的推迟的 preharvest 没有减少,什么时候在最后的产量在温室或领域成长。有 overexpressed Trx h5 的小麦显示出与同量的变化在 vitro 工作更早:二硫化物蛋白质的增加的溶解度和麦胶蛋白质部分的更低的 allergenicity。结果是在谷物内乳的 Trx h 的水平决定基本性质以及种子的潜在的应用程序的进一步的证据。Yong-Chun Li Jiang-Ping Ren Myeong-Je Cho Su-Mei Zhou Yong-Bum Kim Hong-Xiang Guo Joshua H. Wong Hong-Bin Niu Hyun-Kyung Kim Susumu Morigasaki Peggy G. Lemaux Oscar L. Frick Jun Yin Bob B. Buchanan 2009Molecular Plant2009,2,3:5
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