维普中文期刊产品整合服务
729篇 您的检索式:作者名="Geng Wu"
    题名 作者 年代 出处 被引量
1Volumetric-modulated arc therapy vs c-IMRT in esophageal cancer:A treatment planning comparison显示文摘AIM:To compare the volumetric-modulated arc therapy AT plans ith conventional sliding indo intensity-modulated radiotherapy c-I RT plans in esophageal cancer EC . METHODS:Tenty patients ith EC ere selected, including 5 cases located in the cervical, the upper, the middle and the lo er thorax, respectively. Five plans ere generated ith the eclipse planning system:three using c-IMRT with 5 fields (5F), 7 fields (7F) and 9 fields (9F), and two using VMAT with a single arc 1A and double arcs 2A . The treatment plans ere designed to deliver a dose of 60 Gy to the plan-ning target volume Tith the same constrains in a 2.0 Gy daily fraction, 5 d a eek. lans ere normalized to 95% of the T that received 100% of the prescribed dose. We examined the dose-volume histogram parameters of T and the organs at risk OAR such as lungs, spinal cord and heart. onitor units U and normal tissue complication probability NTC of OAR ere also reported. RESULTS:Both c-I RT and AT plans resulted in abundant dose coverage of T for EC of different locations. The dose conformity to T as improved as the number of field in c-IMRT or rotating arc in VMAT as increased. The doses to T and OAR in AT plans ere not statistically different in comparison ith c-I RT plans, ith the follo ing exceptions:in cervical and upper thoracic EC, the conformity index CI as higher in VMAT (1A 0.78 and 2A 0.8) than in c-IMRT (5F 0.62, 7F 0.66 and 9F 0.73) and homogeneity was slightly better in c-IMRT (7F 1.09 and 9F 1.07) than in VMAT (1A 1.1 and 2A 1.09). Lung V30 was lower in VMAT (1A 12.52 and 2A 12.29) than in c-IMRT (7F 14.35 and 9F 14.81). The humeral head doses were significantly increased in AT as against c-I RT. In the middle and lower thoracic EC, CI in VMAT (1A 0.76 and 2A 0.74) was higher than in c-IMRT (5F 0.63 Gy and 7F 0.67 Gy), and homogeneity was almost similar bet een AT and c-I RT. 20 2A 21.49 Gy vs 7F 24.59 Gy and 9F 24.16 Gy) and V30 (2A 9.73 Gy vs 5F 12.61 Gy, 7F 11.5 Gy and 9F 11.37 Gy) of lungs in AT ere lo er than in c-I RT, but lo doses to lungs (V5 and V10) were increased. V30 (1A 48.12 Gy vs 5F 59.2 Gy, 7F 58.59 Gy and 9F 57.2 Gy), V40 and 50 of heart in AT as lo er than in c-I RT. Us in AT plans ere significantly reduced in comparison ith c-I RT, maximum doses to the spinal cord and mean doses of lungs ere similar bet een the t o techniques. NTC of spinal cord as 0 for all cases. NTC of lungs and heart in AT ere lo er than inc-I RT. The advantage of AT plan as enhanced by doubling the arc. CONCLUSION:Compared ith c-I RT, AT, especially the 2A, slightly improves the OAR dose sparing, such as lungs and heart, and reduces NTC and U ith a better T coverage.Li Yin Hao Wu Jian Gong Jian-Hao Geng Fan Jiang An-Hui Shi Rong Yu Yong-Heng Li Shu-Kui Han Bo Xu Guang-Ying Zhu 2012World Journal of Gastroenterology2012,18,37:34
2Correlation of red cell distribution width with the severity of coronary artery disease: a large Chinese cohort study from a single center显示文摘MA Feng-lian LI Sha LI Xiao-lin LIU Jun QING Ping GUO Yuan-lin XU Rui-xia ZHU Cheng-gang JIA Yan-jun LIU Geng DONG Qian WU Na-qiong JIANG Li-xin LI Jian-jun 2013Chinese Medical Journal2013,,6:32
3Hydrogen sulfide ameliorates vascular calcification induced by vitamin D3 plus nicotine in rats显示文摘瞄准:调查内长的胱硫醚 gamma-synthase (CSE ) 的角色在脉管的石灰化的 /hydrogen 硫化物(H2S ) 小径在活体内。方法:脉管的石灰化建模的一只老鼠被维生素 D3 正烟碱(VDN ) 的管理建立。CSE 和 osteopontin (OPN ) 的数量 mRNA 被使用半量的反向抄写的聚合酶链反应决定。钙内容, 45Ca2+ 累积和硷性磷酸酯酶(高山) 活动被测量。H2S 生产和 CSE 活动被测量。结果:染色的 von Kossa 生产了在钙化的主动脉在中间的层的弹性纤维之中在区域染色的强壮的积极黑 / 棕色。分别地,在钙化的动脉的钙内容, 45Ca2+ 累积和高山活动与控制相比由 6.77- , 1.42- ,和 1.87 褶层增加了。OPN 基因的表示起来调整(P<0.01 ) 。基因低是的 CSE 的表示调整了。然而,在 VDN 正 NaHS 的钙内容, 45Ca2+ 举起和高山活动组织在 VDN 组是比那低的。钙和45Ca2+累积和在主动脉的高山的活动的内容是34.8%,40.75%和63.5%比在 VDN 组在低剂量的 NaHS 组降低,分别地( P<0.01 ),并且45Ca2+的钙内容和高山的活动是83.9%, 37.8 %并且46.2%比在 VDN 组在高剂量的 NaHS 组在主动脉降低,分别地( P<0.01 )。基因低是的 OPN 的表示调整了。结论:H2S 的生产,和 CSE 活动被减少, CSE 基因表示低与脉管的石灰化在老鼠调整了。H2S 能改善脉管的石灰化,建议 H2S/CSE 小径在脉管的石灰化的致病起一个规章的作用。Sheng-ying WU Chun-shui PAN Bin GENG Jing ZHAO Fang YU Yong-zheng PANG Chao-shu TANG Yong-fen QI 2006Acta Pharmacologica Sinica2006,27,3:29
4Interferon-Gamma Release Assay is Not Appropriate for the Diagnosis of Active Tuberculosis in High-Burden Tuberculosis Settings: A Retrospective Multicenter Investigation显示文摘Wan-Li Kang Gui-Rong Wang Mei-Ying Wu Kun-Yun Yang Er-Tai A Shu-Cai Wu Shu-Jun Geng Zhi-Hui Li Ming-Wu Li Liang Li Shen-Jie Tang 2018Chinese Medical Journal2018,,3:30
5Effect of tirofiban plus clopidogrel and aspirin on primary percutaneous coronary intervention via transradial approach in patients with acute myocardial infarction显示文摘背景:阿司匹林和 clopidogrel 能改进心肌的灌注并且在经皮的冠的干预(一种总线标准) 期间减轻心肌的损害。静脉内的 tirofiban 的增加是否在这个过程期间生产进一步的利益,没在圣片断举起被澄清心肌的梗塞(STEMI ) 病人。我们在经由 transradial 动脉途径经历了主要一种总线标准(p 一种总线标准) 的 STEMI 病人上评估了这。方法:连续病人被使随机化进 tirofiban 组(n=72 ) 或安慰剂组(n=78 ) 。起始的包括的 Angiographic 分析和在心肌的梗塞(TIMI ) 的最后的血栓溶解流动等级(TFG ) ,改正的 TIMI 框架计数(CTFC ) 和血栓形成容器的心肌的灌注分级的 TIMI (TMPG ) 。血小板聚集率(同等) ,肌酸磷酸激酶(CPK ) , CPK isoenzyme MB (CPK-MB ) 和我铺平的 troponin 被测量, TIMI 定义被用来估计流血复杂并发症。左室的表演参数与平衡放射性核种脑室造影术被调查。主要不利心脏的事件(向) 被跟随在上面为 6 个月。结果:TFG 0 的案例并且 1 在一种总线标准前, TFG 0 指南电线的十字路口什么时候首先是在一种总线标准以后的 TFG 3 的更少,和案例,比在安慰剂组的那些是在 tirofiban 组的更多。最后的 CTFC 是少数和发生不回流现象更低,也最后的 TFG 3 的百分比比在安慰剂组(所有 P<0.05 ) 的那些在 tirofiban 组是更高的。吝啬的山峰 CPK-MB 显著地更低,当时左室的性能参数在一种总线标准以后的 1 个星期更在安慰剂组比那些在 tirofiban 组被改进。同等显著地立即在 tirofiban 注入以后被减少。在 tirofiban 组的 6 月的向的发生在安慰剂组显然是比那低的。没有统计差别关于为复杂并发症放血在二个组之间被注意。结论:除了在有经由 transradial 动脉存取的 p 一种总线标准的 STEMI 病人的阿司匹林和 clopidogrel,静脉内的 tirofiban 注入能快速禁止血小板聚集,松开闭塞的血栓,改进心肌的灌注并且减少有容器存取的很少复杂并发症的向的发生并且流血。FU Xiang-hua HAO Qing-qing JIA Xin-wei FAN Wei-ze GU Xin-shun WU Wei-li HAO Guo-zhen LI Shi-qiang JIANG Yun-fa GENG Wei 2008Chinese Medical Journal2008,,6:22
6Risk of cardiac rupture after acute myocardial infarction is related to a risk of hemorrhage显示文摘Although cardiac rupture (CR) is a fatal mechanical complication of acute myocardial infarction (AMI), to date no predictive model for CR has been described. CR has common pathological characteristics with major bleeding. We aimed to investigate the relationship between the risk factors of major bleeding and CR. A total of 10 202 consecutive AMI patients were recruited, and mechanical complications occurred in 72 patients. AMI patients without CR were chosen as control group. Clinical characteristics including bleeding-related factors were compared between the groups. The incidences of free wall rupture (FWR), ventricular septal rupture (VSR), and papillary muscle rupture (PMR) were 0.39%, 0.21%, and 0.09%, respectively, and the hospital mortalities were 92.5%, 45.5%, and 10.0%, respectively. Female proportion and average age were significantly higher in the groups of FWR and VSR than in the control group (P<0.01); higher white blood cell count and lower hemoglobin were found in all CR groups (P<0.01). Compared to the control group, patients with CR were more likely to receive an administration of thrombolysis [26.39% vs. 13.19%, P<0.05], and were less likely to be treated with primary percutaneous coronary intervention (PCI) [41.67% vs. 81.60%, P<0.05]. The major bleeding scores (integer scores) of FWR, VSR, and PMR were (17.70±7.24), (21.91±8.33), and (18.60±7.88), respectively, and were significantly higher than that of the control group (11.72±7.71) (P<0.05). A regression analysis identified age, increased heart rate, anemia, higher white blood cell count, and thrombolysis as independent risk factors of CR, most of which were major bleeding-related factors. The patients with CR have a significantly higher risk of hemorrhage compared to the group without CR. Risk of CR after AMI is related to the risk of hemorrhage.Geng QIAN Hong-bin LIU Jin-wen WANG Chen WU Yun-dai CHEN 2013Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2013,14,8:22
7Atomically dispersed Au_1 catalyst towards efficient electrochemical synthesis of ammonia显示文摘Tremendous efforts have been devoted to explore energy-efficient strategies of ammonia synthesis to replace Haber–Bosch process which accounts for 1.4% of the annual energy consumption. In this study,atomically dispersed Au_1 catalyst is synthesized and applied in electrochemical synthesis of ammonia under ambient conditions. A high NH_4^+ Faradaic efficiency of 11.1% achieved by our Au_1 catalyst surpasses most of reported catalysts under comparable conditions. Benefiting from efficient atom utilization, an NH_4^+ yield rate of 1,305 lg h^(-1) mg_(Au)^(-1) has been reached, which is roughly 22.5 times as high as that by supported Au nanoparticles. We also demonstrate that by employing our Au_1 catalyst, NH4+can be electrochemically produced directly from N_2 and H_2 with an energy utilization rate of 4.02 mmol kJ^(-1). Our study provides a possibility of replacing the Haber–Bosch process with environmentally benign and energy-efficient electrochemical strategies.Xiaoqian Wang Wenyu Wang Man Qiao Geng Wu Wenxing Chen Tongwei Yuan Qian Xu Min Chen Yan Zhang Xin Wang Jing Wang Jingjie Ge Xun Hong Yafei Li Yuen Wu Yadong Li 2018Science Bulletin2018,63,19:22
8Asiatic acid inhibits lung cancer cell growth in vitro and in vivo by destroying mitochondria显示文摘Asiatic acid(AA), a pentacyclic triterpene found in Centella asiatica, displays significant antiproliferative effects on cancer cells in vitro although the underlying mechanism of this effect remains unknown. This study investigated the efficacy and mechanism of action of AA against lung cancer both in vivo and in vitro. Using the MTT assay, AA was found to induce apoptosis in a dose- and timedependent manner, an effect enhanced by pretreatment with an autophagy inhibitor. It also elevated expression of microtubule-associated protein 1 light chain 3(LC3) and decreased the expression of p62.Furthermore, exposure to AA resulted in collapse of the mitochondrial membrane potential and generation of reactive oxygen species(ROS), suggesting mitochondria are the target of AA. In the mouse lung cancer xenograft model, oral administration of AA significantly inhibited tumor volume and weight accompanied by significant apoptosis of lung cancer cells. In addition, it led to a significant decrease in the expression of proliferating cell nuclear antigen(PCNA). In summary, the results show that AA significantly reduces lung cancer cell growth both in vitro and in vivo and that the associated apoptosis is mediated through mitochondrial damage.Tiancong Wu Ji Geng Wenjie Guo Jing Gao Xixu Zhu 2017Acta Pharmaceutica Sinica B2017,7,1:19
9Combined invagination and duct-to-mucosa techniques with modifications:anew method of pancreaticojejunal anastomosis显示文摘BACKGROUND:Soft pancreatic texture and a small main pancreatic duct are thought to be the most significant risk factors for the occurrence of pancreatic fistula (PF),a common and serious complication after pancreaticoduodenectomy (PD).This is in part due to the technical difficulties of pancreaticojejunostomy (PJ) posed by a soft gland with a normal-sized duct.To deal with this problem,we developed a new anastomotic technique which combines the two most widely used techniques,namely,the invagination technique and the duct-to-mucosa technique,with a modification of the suture route and insertion of a temporary stent tube.METHODS:Between January 2003 and December 2009,ninetytwo consecutive patients underwent PD in which the new PJ technique was used.Charts and follow-up data of these patients were reviewed for operative details,early postoperative events,and outcomes at 6 months after the operation.PF was defined by the International Study Group on Pancreatic Fistula (ISGPF) guidelines and graded (A,B or C) according to the clinical procedures and outcome.RESULTS:In this group of 92 patients,there was only 1 early death from acute renal failure.PF was observed in 11 patients (12.0%),8 in grade A,1 in grade B,and 2 in grade C.For the 2 patients in grade C,PF was surgically managed.There were no early or late deaths attributable to PF.Six months after the operation,all of the patients were free of PJ-related symptoms except for 2,who were found to have steatorrhea.CONCLUSIONS:Our modified technique is simple and safe in PD.Present data suggest that this technique produces excellent early and medium-term results.Bin Zhu,Li Geng,You-Gang Ma,Yong-Jie Zhang and Meng-Chao Wu Second Department of Biliary Surgery and Department of Special Treatment,Eastern Hepatobiliary Surgery Hospital,Second Military Medical University,Shanghai 200438,China 2011Hepatobiliary & Pancreatic Diseases International2011,10,4:18
10Chinese Tuina Downregulates the Elevated Levels of Tissue Plasminogen Activator in Sciatic Nerve Injured Sprague-Dawley Rats显示文摘Objective:To elucidate the mechanism of Chinese tuina in treating sciatic nerve crush injury,and to detect the levels of tissue plasminogen activator(t PA)and plasminogen activator inhibitor-1(PAI-1),which is thought to play an important role in nerve regeneration.Methods:Thirty-two adult male Sprague-Dawley rats were subjected to sciatic nerve crush injury and 16 rats(sham-operated group)went through a sham operation.Control group was given no treatment while tuina group received tuina therapy since day 7 post-surgery.Tuina treatment was performed once a day and lasted for 20 days.The sciatic functional index was examined every 5days during the treatment session.The rats'gastrocnemius muscles were evaluated for changes in mass and immunohistochemistry techniques were performed to detect the levels of tP A and PAI-1.Results:Tuina therapy improved the motor function of sciatic nerve injured rats(P<0.05),however,it did not increase muscle volume(P<0.05).Tuina downregulated the levels of t PA and PAI-1(P<0.05).Conclusions:The present study implies that tuina treatment could accelerate rehabilitation of peripheral nerve injury.PAN Fan YU Tian-yuan Steven Wong XIAN Si-tong LU Meng-qian WU Jian-cong GAO Yu-feng LI Xiao-qin GENG Nan YAO Bin-bin 2017Chinese Journal of Integrative Medicine2017,23,8:16
11Minimum effective local anesthetic dose of intrathecal hyperbaric ropivacaine and bupivacaine for cesarean section显示文摘背景 Intrathecal 麻醉通常为剖腹产被使用。Bupivacaine 和 ropivacaine 都被用作 intrathecal 药。为 nonobstetric 病人的 intrathecal ropivacaine 的最小的有效局部麻醉剂量(MLAD ) 被报导了。然而,很少数据在为产科的病人的高比重的 ropivacine 的 MLAD 上是可得到的,到 bupivacaine 的相对力量一直不是充分坚定的。在这研究,我们寻求了为选任的剖腹产决定 intrathecal ropivacaine 和 bupivacaine 的 MLAD 并且定义他们我们注册了四十 parturients 经历的相对力量 ratio.Methods 选任的剖腹产在下面联合了针硬膜上的麻醉并且使随机化他们组织到二之一收到 intrathecal 0.5%高比重的 ropivacaine 或 bupivacaine.The 起始的剂量 10 mg ,并且在 1 mg 的增长被增加,用上下的顺序的分配的技术。如果卡住刺到 T7 或更高的足够的感觉 dermatomal 麻醉在 intrathecal 注射以后在 20 分钟以内被达到,功效被接受,并且没在 intrathecal MLAD 是的 intrathecal injection.Results 以后为过程要求增补硬膜上的注射直到至少 50 分钟 9.45 mg ( 95%confidence 间隔( CI ), 8.45-10.56 mg )为 ropivacaine 和 7.53 mg ( 95%CI , 7.00-8.10 mg )为 bupivacaine 。相对力量比率是 0.80 (95% Cl, 0.74-0.85 ) 当 intrathecally 交上恺撒的 section.Conclusion 时,为 ropivacaine/bupivacaine, Ropivacaine 在为恺撒的交货的 intrathecal 麻醉期间比 bupivacaine 是 20% 更少的有势力。GENG Zhi-yu WANG Dong-xin WU Xin-min 2011Chinese Medical Journal2011,,4:15
12Study on β-TCP Coated Porous Mg as a Bone Tissue Engineering Scaffold Material显示文摘Three-dimensional honeycomb-structured magnesium (Mg) scaffolds with interconnected pores of accurately controlled pore size and porosity were fabricated by laser perforation technique. Biodegradable and bioactive β-tricalcium phosphate (β-TCP) coatings were prepared on the porous Mg to further improve its biocompatibility, and the biodegradation mechanism was simply evaluated in vitro. It was found that the mechanical properties of this type of porous Mg significantly depended on its porosity. Elastic modulus and compressive strength similar to human bones could be obtained for the porous Mg with porosity of 42.6%-51%. It was observed that the human osteosarcoma cells (UMR106) were well adhered and proliferated on the surface of the β-TCP coated porous Mg, which indicates that the β-TCP coated porous Mg is promising to be a bone tissue engineering scaffold material.Fang Geng Lili Tan Bingchun Zhang Chunfu Wu Yonglian He Jingyu Yang Ke Yang 2009Journal of Materials Science & Technology2009,25,1:13
13Chemical screen identifies a geroprotective role of quercetin in premature aging显示文摘Aging increases the risk of various diseases. The main goal of aging research is to find therapies that attenuate aging and alleviate aging-related diseases. In this study, we screened a natural product library for geroprotective compounds using Werner syndrome (WS) human mesenchymal stem cells (hMSCs), a premature aging model that we recently established. Ten candidate compounds were identified and quercetin was investigated in detail due to its leading effects. Mechanistic studies revealed that quercetin alleviated senescence via the enhancement of cell proliferation and restoration of heterochromatin architecture in WS hMSCs. RNA-sequencing analysis revealed the transcriptional commonalities and differences in the geroprotective effects by quercetin and Vitamin C. Besides WS hMSCs, quercetin also attenuated cellular senescence in Hutchinson-Gilford progeria syndrome (HGPS) and physiological-aging hMSCs. Taken together, our study identifies quercetin as a geroprotective agent against accelerated and natural aging in hMSCs, providing a potential therapeutic intervention for treating age-associated disorders.Lingling Geng Zunpeng Liu Weiqi Zhang Wei Li Zeming Wu Wei Wang Ruotong Ren Yao Su Peichang Wang Liang Sun Zhenyu Ju Piu Chan Moshi Song Jing Qu Guang-Hui Liu 2019Protein & Cell2019,10,6:13
14Progress in Global Gas Hydrate Development and Production as a New Energy Resource显示文摘Natural gas hydrates have been hailed as a new and promising unconventional alternative energy,especially as fossil fuels approach depletion,energy consumption soars,and fossil fuel prices rise,owing to their extensive distribution,abundance,and high fuel efficiency.Gas hydrate reservoirs are similar to a storage cupboard in the global carbon cycle,containing most of the world's methane and accounting for a third of Earth's mobile organic carbon.We investigated gas hydrate stability zone burial depths from the viewpoint of conditions associated with stable existence of gas hydrates,such as temperature,pressure,and heat flow,based on related data collected by the global drilling programs.Hydrate-related areas are estimated using various biological,geochemical and geophysical tools.Based on a series of previous investigations,we cover the history and status of gas hydrate exploration in the USA,Japan,South Korea,India,Germany,the polar areas,and China.Then,we review the current techniques for hydrate exploration in a global scale.Additionally,we briefly review existing techniques for recovering methane from gas hydrates,including thermal stimulation,depressurization,chemical injection,and CH4-CO2 exchange,as well as corresponding global field trials in Russia,Japan,United States,Canada and China.In particular,unlike diagenetic gas hydrates in coarse sandy sediments in Japan and gravel sediments in the United States and Canada,most gas hydrates in the northem South China Sea are non-diagenetic and exist in fine-grained sediments with a vein-like morphology.Therefore,especially in terms of the offshore production test in gas hydrate reservoirs in the Shenhu area in the north slope of the South China Sea,Chinese scientists have proposed two unprecedented techniques that have been verified during the field trials:solid fluidization and formation fluid extraction.Herein,we introduce the two production techniques,as well as the so-called'fbur-in-one'environmental monitoring system employed during the Shenhu production test.Methane is not currently commercially produced from gas hydrates anywhere in the world;therefore,the objective of field trials is to prove whether existing techniques could be applied as feasible and economic production methods for gas hydrates in deep-water sediments and permafrost zones.Before achieving commercial methane recovery from gas hydrates,it should be necessary to measure the geologic properties of gas hydrate reservoirs to optimize and improve existing production techniques.Herein,we propose horizontal wells,multilateral wells,and cluster wells improved by the vertical and in dividual wells applied during existing field trials.It is noteworthy that relatively pure gas hydrates occur in seafloor mounds,within near-surface sediments,and in gas migration conduits.Their extensive distribution,high saturation,and easy access mean that these types of gas hydrate may attract considerable attention from academia and industry in the future.Herein,we also review the occurrence and development of concentrated shallow hydrate accumulations and briefly introduce exploration and production techniques.In the closing section,we discuss future research needs,key issues,and major challenges related to gas hydrate exploration and production.We believe this review article provides insight on past,present,and future gas hydrate exploration and production to provide guidelines and stimulate new work into the field of gas hydrates.LIU Liping SUN Zhilei ZHANG Lei WU Nengyou Yichao Qin JIANG Zuzhou GENG Wei CAO Hong ZHANG Xilin ZHAI Bin XU Cuiling SHEN Zhicong JIA Yonggang 2019Acta Geologica Sinica(English Edition)2019,93,3:13
15Research on Methods of Ecological Security Assessment of the Middle and Lower Reaches of Liaohe River Based on GIS显示文摘Ecological security assessment and early warning research possess the attributes of spatiality, non-linearity and randomicity, so we must process much spatial information. Spatial analysis and data management are the advantages of GIS, which can define distribution trend and spatial relations of environmental factors, and show ecological security pattern graphically. Spatial differences of ecological security assessment based on GIS are discussed in this paper, of which the middle and lower reaches of the Liaohe River is taken as a study case. First, to work out pressure-state-response (P-S-R) assessment indicators system, and investigate in person and gather information; second, to digitize the watershed; third, to quantize and calculate by the fuzzy method; last, to construct GIS grid database, and expound spatial differences of ecological security by GIS interpolation and assembly analysis.Wang Geng 1,2 , Nie Baochi 3, Wang Lin 1 & Wu Wei 1 1. School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China 2. Urban and Environmental School, Liaoning Normal University, Dalian 116029, China 3. Shenyang Buraue of Water Resources, Shenyang 110013, China. 2005Chinese Journal of Population,Resources and Environment2005,3,4:12
16Color image enhancement based on HVS and PCNN显示文摘To enhance color images more effectively, a novel strategy is presented in this paper. We firstly translate the image to be enhanced from RGB space into HIS space, secondly keep its H component unchanged, and thirdly stretch its S component exponentially, and at last process its I component in the following manner: couple both the gray value and the spatial information into an inner activity item of corresponding neuron, integrate the human visual system into a dynamic component of corresponding neuron, and compare the inner activity item with dynamic component to obtain the enhanced image. Experiments demonstrate the effectiveness and validity of our strategy.ZHANG YuDong, WU LeNan , WANG ShuiHua & WEI Geng School of Information Science & Engineering, Southeast University, Nanjing 210096, China 2010Science China(Information Sciences)2010,53,10:12
17Ultrasensitive skin‐like wearable optical sensors based on glass micro/nanofibers显示文摘Electronic skin,a class of wearable electronic sensors that mimic the functionalities of human skin,has made remarkable success in applications including health monitoring,human-machine interaction and electronic-biological interfaces.While electronic skin continues to achieve higher sensitivity and faster response,its ultimate performance is fundamentally limited by the nature of low-frequency AC currents.Herein,highly sensitive skin-like wearable optical sensors are demonstrated by embedding glass micro/nanofibers(MNFs)in thin layers of polydimethylsiloxane(PDMS).Enabled by the transition from guided modes into radiation modes of the waveguiding MNFs upon external stimuli,the skin-like optical sensors show ultrahigh sensitivity(1870 k·Pa^-1),low detection limit(7 mPa)and fast response(10μs)for pressure sensing,significantly exceeding the performance metrics of state-of-the-art electronic skins.Electromagnetic interference(EMI)-free detection of high-frequency vibrations,wrist pulse and human voice are realized.Moreover,a five-sensor optical data glove and a 2×2-MNF tactile sensor are demonstrated.These initial results pave the way toward a new category of optical devices ranging from ultrasensitive wearable sensors to optical skins.Lei Zhang Jing Pan Zhang Zhang Hao Wu Ni Yao Dawei Cai Yingxin Xu Jin Zhang Guofei Sun Liqiang Wang Weidong Geng Wenguang Jin Wei Fang Dawei Di Limin Tong 2020Opto-Electronic Advances2020,3,3:12
18Co-occurrence of nitrite-dependent anaerobic methane oxidizing and anaerobic ammonia oxidizing bacteria in two Qinghai-Tibetan saline lakes显示文摘亚硝酸根依赖者厌氧氧化甲烷(n-damo ) 氧化的细菌和厌氧的氨(anammox ) 细菌是涉及全球碳并且氮骑车的二组微生物。为了测试 n-damo 和 anammox 细菌是否在自然盐的环境, DNA 和 cDNA 共同发生,样品从二个盐的湖的地表的沉积获得了(与 32 和 84 g/L 的咸度,分别地)与 anammox-damo-specific 和 n-damo-specific 教材集合的使用在西藏的高原上是 放大PCR 的,由克隆图书馆建设和种系发生的分析列在后面。DNA 和基于 cDNA 的克隆与 n-damo 结盟了, anammox 细菌成功地从二件样品被检索,显示这些二组细菌能象 84 g/L 一样高在有咸度的自然盐的环境共同发生。我们发现在自然为我们全球碳和氮周期的理解有大含意[出版摘要]Jian YANG Hongchen JIANG Geng WU Weiguo HOU Yongjuan SUN Zhongping LAI Hailiang DONG 2012Frontiers of Earth Science2012,6,4:12
19LARGE EDDY SIMULATION OF OPEN CHANNEL FLOWS WITH NONSUBMERGED VEGETATION显示文摘Results of several Large Eddy Simulations (LES) of open channel flows with non-submerged vegetation are presented in this article. It is shown that the vegetation can make the flow structure in the mainstream direction uniform for both supercritical and subcritical flows. For subcritical flows, the LES results of the ensemble-average of time-averaged velocity distributions at four vertical sections around a single plant are in good agreement with measurements. The velocity sees double peaks at the upper and lower positions of flows. For supercritical flows, the ensemble-average velocities see some discrepancy between LES and measurement results. Some secondary flow eddies appear near the single plant, and they just locate in the positions of the double peaks in stream-wise velocity profiles. It is also found that the vegetation drag coefficient deceases as the Froude number increases.HUAI Wen-xin WU Zhen-lei QIAN Zhong-dong GENG Chuan 2011Journal of Hydrodynamics2011,23,2:11
20Bedaquiline-containing regimens in patients with pulmonary multidrug-resistant tuberculosis in China:focus on the safety显示文摘Background:World Health Organization recommends countries introducing new drug and short treatment regimen for drug resistant tuberculosis(DR-TB)should develop and implement a system for active pharmacovigilance that allows for detection,reporting and management of adverse events.The aim of the study is to evaluate the frequency and severity of adverse events(AEs)of bedaquiline-containing regimen in a cohort of Chinese patients with multidrug-resistant(MDR)/extensively drug-resistant(XDR)-TB based on active drug safety monitoring(aDSM)system of New Drug Introduction and Protection Program(NDIP).Jing-Tao Gao Juan Du Gui-Hui Wu Yi Pei Meng-Qiu Gao Leonardo Martinez Lin Fan Wei Chen Li Xie Yu Chen Hua Wang Long Jin Guo-Bao Li Pei-Lan Zong Yu Xiong Qian-Hong Wu Ming-Wu Li Xiao-Feng Yan Yan-Fang Miao Qing-Shan Cai Xin-Jie Li Da-Peng Bai Shu-Jun Geng Guo-Li Yang Pei-JunTang Yi Zeng Xiao-Hong Chen Tong-Xia Li Cui Cai Yun Zhou Ma Zhuo Jian-Yun Wang Wen-Long Guan Lin Xu Ji-Chan Shi Wei Shu Li-Li Cheng FeiTeng Yu-Jia Ning Shi-Heng Xie Yu-Xian Sun Li-Jie Zhang Yu-Hong Liu 2021Infectious Diseases of Poverty2021,10,2:11
返回顶部 每页显示:
共37页 首页 上一页 第1页 下一页 末页 /37 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