维普中文期刊产品整合服务
1402篇 您的检索式:作者名="TIANNING ZHENG"
    题名 作者 年代 出处 被引量
1Clinical characteristics, diagnosis and management of respiratory distress syndrome in full-term neonates显示文摘然而,背景呼吸悲痛症候群(RDS ) 是新生的呼吸失败和新生的死亡的最普通的原因之一它的临床的特征与早熟的 RDS,和这些特征很不同很好没迄今为止被记录。这研究是在完整术语的出生不满一月的婴儿调查致病,临床的特征和 RDS 的管理策略,与开发为改进在有 RDS.Methods 的完整术语的出生不满一月的婴儿的结果的一个工作协议的目的有 RDS 的 125 个完整术语的婴儿的一个总数在这研究被注册。他们的临床并且实验室数据为分析 125 个案例包括了的完整术语的新生的 RDS.Results (1 ) 的特征被收集 94 男性和 31 个女婴儿,阴道交货在 45 种情况中发生在 80 种情况和剖腹产中。(2 ) RDS 的发作时间是(3.11 牧潯敶吗?LIU Jing SHI Yun DONG Jian-ying ZHENG Tian LI Jing-ya LU Li-li LIU Jing-jing LIANG Jing ZHANG Hao FENG Zhi-chun 2010Chinese Medical Journal2010,,19:79
2Human colorectal cancer-specific CCAT1-L IncRNA regulates long-range chromatin interactions at the MYC locus显示文摘人的 8q24 基因沙漠包含多重 enhancers 形式织物特定的远程的染色质与 MYC oncogene 循环,但是染色质在 MYC 地点循环怎么被调整,仍然保持糟糕理解。这里,我们表明那长 noncoding RNA (lncRNA ) , CCAT1-L,从一个地点在人的 colorectal 癌症明确地被抄录 MYC 在上游的 515 kb。这 lncRNA 在 MYC transcriptional 规定起一个作用并且支持远程的染色质循环。重要地, CCAT1-L 地点位于强壮的超级提高以内并且离 MYC 空间地靠近。CCAT1-L 击倒在 MYC 倡导者和它的 enhancers 之间的减少的远程的相互作用。另外, CCAT1-L 与 CTCF 交往并且在这些环区域调制染色质符合构造。这些结果揭示一个重要角色一以前在在 MYC 地点的基因规定的 unannotated lncRNA。Jian-Feng Xiang Qing-Fei Yin Tian Chen Yang Zhang Xiao-Ou Zhang Zheng Wu Shaofeng Zhang Hai-Bin Wang Junhui Ge Xutiua Lu Li Yang Ling-Ling Chen 2014Cell Research2014,24,5:67
3Pathogenic T-cells and inflammatory monocytes incite inflammatory storms in severe COVID-19 patients显示文摘Pathogenic human coronavirus infections,such as severe acute respiratory syndrome CoV(SARS-CoV)and Middle East respiratory syndrome CoV(MERS-CoV),cause high morbidity and mortality[1,2].Recently,a severe pneumonia-associated respiratory syndrome caused by a new coronavirus(SARS-CoV-2)was reported in December 2019 in the city of Wuhan,Hubei province,China[3-5],which was also named as pneumonia-associated respiratory syndrome(PARS)[6]and can cause coronavirus disease 2019(COVID-19)to seriously endanger human health.Yonggang Zhou Binqing Fu Xiaohu Zheng Dongsheng Wang Changcheng Zhao Yingjie Qi Rui Sun Zhigang Tian Xiaoling Xu Haiming Wei 2020National Science Review2020,7,6:54
4Functional exhaustion of antiviral lymphocytes in COVID-19 patients显示文摘In December 2019,a novel coronavirus was first reported in Wuhan,China.1 It was named by the World Health Organization as severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)and is responsible for coronavirus disease 2019(COVID-19).Up to 28 February 2020,79,394 cases have been confirmed according to China’s National Health Commission.Outside China,the virus has spread rapidly to over 36 countries and territories.Yuanhong Xuand Zhigang Tian Meijuan Zheng Yong Gao Gang Wang Guobin Song Siyu Liu Dandan Sun Yuanhong Xu Zhigang Tian 2020Cellular & Molecular Immunology2020,17,5:54
5Functions and behaviors of activated sludge extracellular polymeric substances (EPS): a promising environmental interest显示文摘Extracellular polymeric substances(EPS) are the predominant constituen ts of activated sludge and represent up to 80% of the mass of activated sludge. They play a crucial role in the flocculation, settling and dewatering of activat ed sludge. Furthermore, EPS also show great efficiency in binding heavy metals. So EPS are key factors influencing reduction in sludge volume and mass, as well as activity and utilization of sludge. EPS are of considerable environmental int erest and hundreds of articles on EPS have been published abroad, while informat ion on EPS in China is limited. In this paper, results of over 60 publications r elated to constituents and characteristics of EPS and their influences on floccu lation, settling and dewatering of sludge are compiled and analyzed. Metal-bindi ng ability of EPS is also discussed, together with a brief consideration of poss ible research interests in the future.TIAN Yu ZHENG Lei SUN De-zhi 2006Journal of Environmental Sciences2006,18,3:36
6Anti-hepatoma activity and mechanism of ursolic acid and its derivatives isolated from Aralia decaisneana显示文摘瞄准:为了调查 ursolic (UA ) 和它的衍生物的反肿瘤活动,在肝细胞癌上从美┦木孤立 decaisneana 在试管内和在活体内。方法:在活体内细胞毒性被 3- 首先屏蔽[4,5-dimethylthiazol-2-yl ]-2, 5-diphenyltetrazolium 溴化物(MTT ) 试金。词法观察, DNA 梯子,流动血细胞计数分析,西方的污点和实时 PCR 被采用阐明 UA 的细胞毒素的机制。植入的老鼠肝细胞瘤 H22 被用来评估生长 UA 的禁止的效果在活体内。结果:UA 能显著地禁止 HepG2 和它的药抵抗的增长紧张, R-HepG2 房间,而是首先有教养的正常老鼠 hepatocytes 上的有的不禁止的效果而 UA 的所有六衍生物不能禁止所有的生长,测试房间排队。机制上的进一步的学习证明那 apoptosis 和 G0/G1 拘捕涉及多(自动数据处理核糖) 的细胞毒性和劈开聚合酶(PARP ) 。cyclooxygenase-2 (COX-2 ) 的 Downregulation 蛋白质并且在热吃惊蛋白质(HSP ) 的规定上面, 105 mRNA 相关到与 UA 对待的 HepG2 房间的 apoptosis。另外, UA 能也禁止 H22 肝细胞瘤在活体内的生长。结论:UA 是一个有希望的反肿瘤代理人,但是推进工作需要被做改进它的溶解度。Ze Tian Geng Lin Rui-Xia Zheng Feng Huang Meng-Su Yang Pei-Gen Xiao 2006World Journal of Gastroenterology2006,12,6:31
7Molecular and cellular characterization during chondrogenic differentiation of adipose tissue-derived stromal cells in vitro and cartilage formation in vivo显示文摘Lin Y Luo E Chen X Liu L Qiao J Yan Z Li Z Tang W Zheng X Tian W 2006中国生物学文摘2006,20,5:31
8Protein induced by vitamin K absence or antagonist-Ⅱ versus alpha-fetoprotein in the diagnosis of hepatocellular carcinoma: A systematic review with meta-analysis显示文摘Background: As a promising biomarker of hepatocellular carcinoma(HCC), protein induced by vitamin K absence or antagonist-Ⅱ(PIVKA-Ⅱ) has been studied extensively. However, its diagnostic capability varies across HCC studies. This study aimed to compare the performance of PIVKA-Ⅱ with alpha-fetoprotein(AFP) in the diagnosis of HCC. Data sources: A systematic literature search was conducted to identify the studies from MEDLINE, Embase and Cochrane Library Databases, which were published up to December 20, 2017 to compare the diagnostic capability of PIVKA-Ⅱ and AFP for HCC. The data were pooled using random effects model. Pooled sensitivity and specificity were calculated. Summary receiver operating characteristic curve(ROC) was employed to evaluate the diagnostic accuracy of each marker. Results: Thirty-one studies were included. The pooled sensitivity(95% CI) of PIVKA-Ⅱ and AFP was 0.66(0.65–0.68) and 0.66(0.65–0.67), respectively in diagnosis of HCC; and the corresponding pooled specificity(95% CI) was 0.89(0.88–0.90) and 0.84(0.83–0.85), respectively. The area under the ROC curve(AUC) of PIVKA-Ⅱ and AFP was 0.856(0.817–0.895) and 0.770(0.728–0.811), respectively. Subgroup analysis showed that PIVKA-Ⅱ was superior to AFP in terms of the AUC for both small HCC( < 3 cm) [0.863(0.825–0.901) vs 0.717(0.658–0.776)] and large HCC( ≥ 3 cm) [0.854(0.811–0.897) vs 0.729(0.682–0.776)]; for American [0.926(0.897–0.955) vs 0.698(0.594–0.662)], European [0.772(0.743–0.801) vs 0.628(0.594–0.662)], Asian [0.838(0.812–0.864) vs 0.785(0.764–0.806)] and African [0.812(0.794–0.840) vs 0.721(0.675–0.767)] HCC patients; and for HBV-related [0.909(0.866–0.951) vs 0.714(0.673–0.755)] and mixed-etiology [0.847(0.821–0.873) vs 0.794(0.772–0.816)] HCC. Conclusion: This meta-analysis indicates that PIVKA-Ⅱ is better than AFP in terms of the accuracy for diagnosing HCC, regardless of tumor size, patient ethnic group, or HCC etiology.Hao Xing Yi-Jie Zheng Jun Han Han Zhang Zhen-Li Li Wan-Yee Lau Feng Shen Tian Yang 2018Hepatobiliary & Pancreatic Diseases International2018,17,6:34
9Evaluation of epithelial-mesenchymal transitioned circulating tumor cells in patients with resectable gastric cancer: Relevance to therapy response显示文摘AIM: To evaluate the epithelial-to-mesenchymal transition(EMT) of circulating tumor cells(CTCs) in gastric cancer patients.METHODS: We detected tumor cells for expression of four epithelial(E^+) transcripts(keratins 8, 18, and 19 and epithelial cell adhesion molecule) and two mesenchymal(M^+) transcripts(Vimentin and Twist) by a quantifiable, dual-colorimetric RNA-in situ hybridization assay. Between July 2014 and October 2014, 44 patients with gastric cancer were recruited for CTC evaluation. Blood samples were obtained from selected patients during the treatment course [before surgery, after surgery and at the 6^(th) cycle of XELOX based chemotherapy(about 6 mo postoperatively)].RESULTS: We found the EMT phenomenon in which there were a few biphenotypic E^+/M^+ cells in primary human gastric cancer specimens. Of the 44 patients, the presence of CTCs was reported in 35(79.5%) patients at baseline. Five types of cells including from exclusively E^+ CTCs to intermediate CTCs and exclusively M^+ CTCs were identified(4 patients with M^+ CTCs and 10 patients with M^+ or M^+ > E^+ CTCs). Further, a chemotherapy patient having progressive disease showed a proportional increase of mesenchymal CTCs in the post-treatment blood specimens. We used NCI-N87 cells to analyze the linearity and sensitivity of Can Patrol^(TM) system and the correlation coefficient(R^2) was 0.999.CONCLUSION: The findings suggest that the EMT phenomenon was both in a few cells of primary tumors and abundantly in CTCs from the blood of gastric cancer patients, which might be used to monitor therapy response.Ting-Ting Li Hao Liu Feng-Ping Li Yan-Feng Hu Ting-Yu Mou Tian Lin Jiang Yu Lei Zheng Guo-Xin Li 2015World Journal of Gastroenterology2015,21,47:29
10Effect of nuclear factor kappa B on intercellular adhesion molecule-1 expression and neutrophil infiltration in lung injury induced by intestinal ischemia/reperfusion in rats显示文摘瞄准:为了在肺损害的致病调查原子因素 kappa B (NF-kappaB ) 的角色,导致了旁边肠的 ischemia/reperfusion (I/R ) ,和它细胞间的粘附 molecule-1 (ICAM-1 ) 上的效果表示和嗜中性的渗入。方法:24 只 Wistar 老鼠随机被划分成控制, I/R 和吡咯烷 dithiocarbamate (PDTC ) 处理组,在各个的 n=8。I/R 组和 PDTC 治疗组织为 2 h 为 1 h 和灌注堵塞的收到的优异 mys 伤寒动脉(SMA ) 。PDTC 组在外科前与 2% 100 mg/kg PDTC 1 h 的腹膜内注射被管理。肺组织学和支气管 alveolus 肺液体(BALF ) 蛋白质是 assayed。浆液 IL-6,肺 malondialdehyde (MDA ) 和象 NF-kappaB 和 ICAM-1 的表示水平一样的 myeloperoxidase (军邮局) 被测量。结果:肺损害由肠的 I/R 导致了,被浮肿,出血和嗜中性的渗入以及由 BALF 的重要升起描绘蛋白质。比作控制组,在 I/R 显著地增加的浆液 IL-6 和肺 MDA 和军邮局的层次组织(P=0.001 ) 。NF-kappaB p65 和 ICAM-1 的强壮的积极表示被观察。在 PDTC 的管理以后,象 NF-kappaB 和 ICAM-1 一样的浆液 IL-6,肺 MDA 和军邮局的水平显著地减少了(P<0.05 ) 什么时候与 I/R 相比组。结论:NF-kappaB 的激活在肠的 I/R 直在调整嗜中性的渗入和肺 ICAM-1 表示上面导致的肺损害的致病起一个重要作用。NF-kappaB 的一个禁止者能阻止肺损害的 PDTC 通过禁止 NF-kappaB 的活动由肠的 I/R 导致了。Xiao-Feng Tian Ji-Hong Yao Ying-Hua Li Xue-Song Zhang Bing-An Fen Chun-Ming Yang Shu-Sen Zheng 2006World Journal of Gastroenterology2006,12,3:28
11The General Design and Technology Innovations of CAP1400显示文摘行波堆为一次通过式燃料循环反应堆,其利用堆芯自增殖大大降低了对浓缩和后处理的需求。自增殖将次临界换料燃料转化为新的临界燃料,从而使增殖燃烧波得以扩散。该理念建立在增殖燃烧波和燃料的相对移动的基础上。因此,燃料或增殖燃烧波相对于固定的观察器而言是移动的。行波堆最实用的体现就是能够在将核反应保持在同一位置的同时移动燃料——有时行波堆也被称为'驻波堆'。行波堆能够使用换料铀燃料运行,换料铀燃料包括完全贫化铀、天然铀和低浓缩铀燃料(即235U含量为5.5%或更低的燃料),这些燃料通常在快谱中达不到临界状态。轻水反应堆卸出的乏燃料也可以作为行波堆的换料燃料。上述情况均无需后处理即可实现极高的燃料利用率和燃料废物量的显著降低。当换料燃料为贫化铀时,行波堆的最大优势得以实现,即在启动后,无需浓缩设施,就可维持最先启动的反应堆和一连串后续的反应堆的运行。自2006年起,泰拉能源公司(Terra Power)与50多个机构高度协作,开展了概念设计、工程设计和相关技术开发活动,力争到2026年实现将第一个机组投入使用。本文总结了行波堆技术,包括它的发展计划及其进展,分析了行波堆的社会和经济效益。Mingguang Zheng Jinquan Yan Jun Shenttu Lin Tian Xujia Wang Zhongming Qiu 2016Engineering2016,2,1:27
12A national report from China Liver Transplant Registry: steroid avoidance after liver transplantation for hepatocellular carcinoma显示文摘Objective:We aimed to evaluate the efficacy and safety of steroid-free immunosuppression after liver transplantation(LT)for hepatocellular carcinoma(HCC).Methods:We retrospectively analyzed HCC recipients without steroids after LT(SF group,n=368)based on the China Liver Transplant Registry(CLTR)database.These recipients were matched 1:2 with patients using steroids(S group,n=736)for the same period after LT for HCC,according to propensity scores.Results:Multivariate analysis indicates that recipients with younger age[odds ratio(OR),1.053;P=0.011],preoperative hepatitis B virus(HBV)DNA≥1,000 copies/mL(OR,2.597;P=0.004)and beyond Milan criteria(OR,4.255;P<0.001)were identified as the risk factors associated with tumor recurrence in steroid avoidance recipients after LT.The patients fulfilling the Milan criteria in the SF group presented higher overall and tumor-free survival rates than those in the S group(P<0.05).Multivariate analysis revealed that recipient beyond Milan criteria was an independent prognostic factor for overall survival(OR,1.690;P<0.001)and tumor-free survival(OR,2.066;P<0.001).The incidences of new-onset diabetes mellitus(21.20% vs.33.29%,P<0.001),new-onset hypertension(10.05%vs.18.61%,P<0.001)and hyperlipidemia(4.08% vs.7.20%,P=0.042)were significantly lower in the SF group.Conclusions:Steroid-free immunosuppression could be safe and feasible for HBV-related HCC patients in LT.Age,HBV DNA level and Milan criteria maybe risk factors associated with tumor recurrence in steroid avoidance recipients.Recipient beyond Milan criteria was an independent prognostic factor and recipient fulfilling Milan criteria can benefit the most from steroid-free immunosuppression.Qiang Wei Feng Gao Runzhou Zhuang Qi Ling Qinghong Ke Jian Wu Tian Shen Mangli Zhang Min Zhang Xiao Xu Shusen Zheng 2017Chinese Journal of Cancer Research2017,29,5:25
13Current status of diagnosis and treatment of bladder cancer in China-Analyses of Chinese Bladder Cancer Consortium database显示文摘Objective:To investigate current status of diagnosis and treatment of bladder cancer in China.Methods:A database was generated by Chinese Bladder Cancer Consortium(CBCC).From January 2007 to December 2012,14,260 cases from 44 CBCC centers were included.Data of diagnosis,treatment and pathology were collected.Results:The average age was 63.5 year-old and most patients were male(84.3%).The most common histologic types were urothelial carcinoma(91.4%),adenocarcinoma(1.8%),and squamous carcinoma(1.9%).According to 1973 and 2004 WHO grading system,42.0%,41.0%,and 17.0% of patients were grade 1,2,and 3,and 16.0%,48.7%,and 35.3% of patients were papillary urothelial neoplasms of low malignant potential,low,and high grade,respectively.Non-muscle invasive bladder cancer(NMIBC)and muscle invasive bladder cancer(MIBC)were 25.2% and 74.1%,respectively(0.8% not clear).Carcinoma in situ was only 2.4%.Most patients were diagnosed by white-light cystoscopy with biopsy(74.3%).Fluorescence and narrow band imaging cystoscopy had additional detection rate of 1.0% and 4.0%,respectively.Diagnostic transurethral resection(TUR)provided detection rate of 16.9%.Most NMIBCs were treated with TUR(89.2%).After initial TUR,2.6%accepted second TUR,and 45.7%,69.9%,and 58.7% accepted immediate,induced,and maintenance chemotherapy instillation,respectively.Most MIBCs were treated with radical cystectomy(RC,59.7%).Laparoscopic RCs were 35.1%,while open RC 63.4%.Extended and standard pelvic lymph node dissection were 7% and 66%,respectively.Three most common urinary diversions were orthotopic neobladder(44%),ileal conduit(31%),and ureterocutaneostomy(23%).Only 2.3% of patients accepted neo-adjuvant chemotherapy and only 18%of T3 and T4 patients accepted adjuvant chemotherapy.Conclusion:Disease characteristics are similar to international reports,while differences of diagnosis and treatment exist.This study can provide evidences for revisions of the guideline on bladder cancer in China.Kaiwen Li Tianxin Lin Wei Xue Xin Mu Enci Xu Xu Yang Fubao Chen Guangyong Li Lulin Ma Guoliang Wang Chaozhao Liang Haoqiang Shi Ming Li Mao Tang Xueyi Xue Yisong Lv Yaoliang Deng Chengyang Li Zhiwen Chen Xiaozhou Zhou Fengshuo Jin Xudong Liu Jinxin Wei Lei Shi Xin Gou Weiyang He Liqun Zhou Lin Cai Baiye Jin Guanghou Fu Xiangbo Kong Hongyan Sun Ye Tian Lang Feng Tiejun Pan Yiyi Wu Dongwen Wang Hailong Hao Benkang Shi Yaofeng Zhu Qiang Wei Ping Han Changli Wu Dawei Tian Zhangqun Ye Zheng Liu Zhiping Wang Junqiang Tian Lin Qi Minfeng Chen Wei Li Jinchun Qi Gongxian Wang Longlong Fu Zhaolin Sun Guangheng Luo Zhoujun Shen Zhaowei Zhu Jinchun Xing Zhun Wu Dong Wei Xin Chen Yanqun Na Hongfeng Guo Chunxi Wang Zhihua Lu Chuize Kong Yang Liu Jin Yang Jianyun Hu Xin Gao Jielin Li Changjun Yin Pu Li Shan Chen Zhen Du Jiongming Li Yongji Yan Xu Zhang Shuang Huang Fangjian Zhou Zhiling Zhang Yinghao Sun Shuxiong Zeng Song Cen Jiaquan Zhou Hanzhong Li Jin Wen Jian Huang 2015Asian Journal of Urology2015,2,2:21
14Matrix metalloproteinases contribute to kidney fibrosis in chronic kidney diseases显示文摘Matrix metalloproteinases(MMPs) are members of the neutral proteinase family. They were previously thought to be anti-fibrotic because of their ability to degrade and remodel of extracellular matrix. However, recent studies have shown that MMPs are implicated in initiation and progression of kidney fibrosis through tubular cell epithelial–mesenchymal transition(EMT) as well as activation of resident fibroblasts, endothelial-mesenchymal transition(Endo MT) and pericyte-myofibroblast transdifferentiation. Interstitial macrophage infiltration has also been shown to correlate with the severity of kidney fibrosis in various chronic kidney diseases. MMPs secreted by macrophages, especially MMP-9, hasbeen shown by us to be profibrotic by induction of tubular cells EMT. EMT is mainly induced by transforming growth factor-β(TGF-β). However, MMP-9 was found by us and others to be up-regulated by TGF-β1 in kidney tubular epithelial cells and secreted by activated macrophages, resulting in EMT and ultimately kidney fibrosis. Therefore, MMP-9 may serve as a potential therapeutic target to prevent kidney fibrosis in chronic kidney disease. This review, by a particular focus on EMT, seeks to provide a comprehensive understanding of MMPs, especially MMP-9, in kidney fibrosis.Hong Zhao Yanting Dong Xinrui Tian Thian Kui Tan Zhuola Liu Ye Zhao Yun Zhang David CH Harris Guoping Zheng 2013World Journal of Nephrology2013,2,3:21
15Relationship between ABO blood groups and carcinoma of esophagus and cardia in Chaoshan inhabitants of China显示文摘AIM To study the relationship between ABO blood groups and carcinoma of esophagus and cardia in Chaoshan inhebitants of China, which is a unique Littoral high-risk area of esophageal carcinoma in China. The poor communication and transportation in the psst has made Cheoshan a relatively closed area and kept its culture and costure of old China thousend years ago.``METHODS Data on age, sex, ABO blood type and X-rayor psthological diagnose of the pstients with carcinoma of esophagus or cardia were collected from the Tumor Hospital. First Affiliated Hospital, Second Affiliated Hospital of Shantou University Medical College; and the Central Hospital of Shantou and the Central Hospital of Jieyang. A total of 6685 pstients with esophageal carcinoma (EC) and 2 955 patients with cardiac cancer (CC) in Chaoshen district were retrospectively assessed for their association with ABO blood groups.``RESULTS The distribution of ABO blood groups in patients with EC or CC was similar to the norrnal local population in Chaoshen. However, blood group B in male patients with CC and in the pstients with carcinoma in the upper third esophagus was 2.3% and 4.7% higher than the corresponding controls. The relative risk B: O was 1. 1415 (P<0.05)and 1 .2696 (P<0.05), respectively. No relationship was found between ABO blood groups and tumor differentiation.``CONCLTUSION ABO blood group B is associated with the incidence of CC in male individuals and carcinona in the upper third esophagus. The distribution of ABO blood groups varies in the different geographical and ethnic groups. As a result, proper controls are very important for such studies.Min Su~1 Shan-Ming Lu~1 Dong-Ping Tian~1 Hu Zhao~1 Xiao-Yun Li~2 De-Rui Li~3 Zhi-Chao Zheng~4 1 Department of Pathology,2 Tumor Hospital,3,4 Second Teaching Hospital,Shantou University Medical College,Shantou 515031,China 2001World Journal of Gastroenterology2001,7,5:20
16Spectral clustering based on matrix perturbation theory显示文摘This paper exposes some intrinsic characteristics of the spectral clustering method by using the tools from the matrix perturbation theory. We construct a weight ma- trix of a graph and study its eigenvalues and eigenvectors. It shows that the num- ber of clusters is equal to the number of eigenvalues that are larger than 1, and the number of points in each of the clusters can be approximated by the associated eigenvalue. It also shows that the eigenvector of the weight matrix can be used directly to perform clustering; that is, the directional angle between the two-row vectors of the matrix derived from the eigenvectors is a suitable distance measure for clustering. As a result, an unsupervised spectral clustering algorithm based on weight matrix (USCAWM) is developed. The experimental results on a number of artificial and real-world data sets show the correctness of the theoretical analysis.TIAN Zheng LI XiaoBin JU YanWei 2007Science in China(Series F)2007,50,1:19
17Precise nanomedicine for intelligent therapy of cancer显示文摘Precise nanomedicine has been extensively explored for efficient cancer imaging and targeted cancer therapy, as evidenced by a few breakthroughs in their preclinical and clinical explorations. Here, we demonstrate the recent advances of intelligent cancer nanomedicine, and discuss the comprehensive understanding of their structure-function relationship for smart and efficient cancer nanomedicine including various imaging and therapeutic applications, as well as nanotoxicity. In particular, a few emerging strategies that have advanced cancer nanomedicine are also highlighted as the emerging focus such as tumor imprisonment, supramolecular chemotherapy, and DNA nanorobot. The challenge and outlook of some scientific and engineering issues are also discussed in future development. We wish to highlight these new progress of precise nanomedicine with the ultimate goal to inspire more successful explorations of intelligent nanoparticles for future clinical translations.Huabing Chen Zhanjun Gu Hongwei An Chunying Chen Jie Chen Ran Cui Siqin Chen Weihai Chen Xuesi Chen Xiaoyuan Chen Zhuo Chen Baoquan Ding Qian Dong Qin Fan Ting Fu Dayong Hou Qiao Jiang Hengte Ke Xiqun Jiang Gang Liu Suping Li Tianyu Li Zhuang Liu Guangjun Nie Muhammad Ovais Daiwen Pang Nasha Qiu Youqing Shen Huayu Tian Chao Wang Hao Wang Ziqi Wang Huaping Xu Jiang-Fei Xu Xiangliang Yang Shuang Zhu Xianchuang Zheng Xianzheng Zhang Yanbing Zhao Weihong Tan Xi Zhang Yuliang Zhao 2018Science China Chemistry2018,61,12:19
18Review of bio-optical imaging systems with a high space-bandwidth product显示文摘Optical imaging has served as a primary method to collect information about biosystems across scales—from functionalities of tissues to morphological structures of cells and even at biomolecular levels.However,to adequately characterize a complex biosystem,an imaging system with a number of resolvable points,referred to as a space-bandwidth product(SBP),in excess of one billion is typically needed.Since a gigapixel-scale far exceeds the capacity of current optical imagers,compromises must be made to obtain either a low spatial resolution or a narrow field-of-view(FOV).The problem originates from constituent refractive optics—the larger the aperture,the more challenging the correction of lens aberrations.Therefore,it is impractical for a conventional optical imaging system to achieve an SBP over hundreds of millions.To address this unmet need,a variety of high-SBP imagers have emerged over the past decade,enabling an unprecedented resolution and FOV beyond the limit of conventional optics.We provide a comprehensive survey of high-SBP imaging techniques,exploring their underlying principles and applications in bioimaging.Jongchan Park David J.Brady Guoan Zheng Lei Tian Liang Gao 2021Advanced Photonics2021,3,4:19
19Comparison of glycemic variability and glycated hemoglobin as risk factors of coronary artery disease in patients with undiagnosed diabetes显示文摘背景一个冠的动脉疾病( CAD )风险因素是著名的长期的多糖症的角色,并且 glycemic 可变性仍然是这研究的 debate.The 目的一件事是调查承认 glycemic 的协会有在有 undiagnosed 糖尿病 mellitus ( DM )的病人的 CAD 的存在和严厉的旅行和血红素 A1c ( HbA1c )我们学习了的 .Methods 286 最新诊断了 DM 没有优先的 revascularization 的病人为怀疑的 ischaemic ch 经历冠的MI Shu-hua SU Gong LI Zhao YANG Hong-xia ZHENG Hong TAO Hong ZHOU Yun TIAN Lei 2012Chinese Medical Journal2012,,1:18
20System of systems oriented flight vehicle conceptual design: Perspectives and progresses显示文摘In order to obtain optimized flight vehicle concepts which meet system of systems(So S)operation requirements,designers have to pay high attention to the impact of So S at conceptual design stage since operation environment goes increasingly complex.Based on this tendency,perspectives and progresses of So S oriented flight vehicle conceptual design,which is abbreviate as So Sed design,are reviewed in this paper.Such basic concepts of So S as definition,characteristics,differences between systems engineering and So S engineering,as well as So Sed design process are introduced,then So S engineering process model for research and development of flight vehicles and So Sed design wheel model for conceptual design are proposed.Related literature is classified and analyzed in accordance with four major elements including requirements,design concept,design analysis,and trade studies and optimization:typical So S architectures,description and quantization of indexes are introduced;Application of inverse design in designing concept is analyzed;Modeling and simulation(M&S)-based methods and their applications in So Sed effectiveness evaluation are highlighted;According to So Sed trade studies and optimization related research,the importance of such points as decision-making and using multidisciplinary design optimization for reference are emphasized.Finally,the value of So Sed design is concluded,and five directions which are worthy of attention in this field are presented.Liu Hu Tian Yongliang Gao Yuan Bai Jinpeng Zheng Jiangan 2015Chinese Journal of Aeronautics2015,28,3:18
返回顶部 每页显示:
共71页 首页 上一页 第1页 下一页 末页 /71 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费