检索结果-南通市图书馆

畜牧与兽医 2012年第S2期44卷 57-58页

作者： Zih-ling Lai Shu-Hao Chang Chu-Yu Tsai Shiun-long lin Department of Veterinary Medicine College of Veterinary MedicineNational Chung Hsing University Mackay Memorial Hospital

The posterior capsular opacification(PCO)is by far the most common complication following *** continuous curvilinear capsulorhexis(PCCC)is performed to prevent this complication in human *** PCCC,the central part of the posterior capsule is removed during cataract surgery to prevent equatorial lens cell migration onto the posterior capsule from reaching the visual *** to now,there has no any report about PCCC in veterinary *** aim of this study is to evaluate the efficacy of primary PCCC on the severity of posterior capsular opacification in dogs.

关键词： opacification capsular equatorial cataract migration removed capsule severity reaching intraoperative

Influence of core box vents distribution on flow dynamics of core shooting process based on experiment and numerical simulation

在线全文

学校读者我要写书评

暂无评论

China Foundry 2016年第1期13卷 22-29页

作者： Chang-jiang Ni Gao-chun Lu Qing-dong Zhang Tao Jing Jun-jiao Wu lin-long Yang Qin-fang Wu School of Materials Science and Engineering Tsinghua University Suzhou Mingzhi Technology Co. Ltd.

Core shooting process plays a decisive role in the quality of sand cores, and core box vents distribution is one of the most important factor determining the effectiveness of core shooting process. In this paper, the influence of core box vents distribution on the flow dynamics of core shooting process was investigated based on in situ experimental observations with transparent core box, high-speed camera and pressure measuring system. Attention was focused on the variation of both the flow behavior of sand and pressure curves due to different vents distribution. Taking both kinetic and frictional stress into account, a kinetic-frictional constitutive model was established to describe the internal momentum transfer in the solid phase. Two-fluid model(TFM) simulation was then performed and good agreement was achieved between the experimental and simulated results on both the flow behavior of sand and the pressure curves. It was found that vents distribution has direct effect on the pressure difference of different locations in the core box, which determines the buoyancy force exerting on the sand particles and significantly influences the filling process of core sand.

关键词： vents distribution flow dynamics pressure variation core shooting process kinetic-frictional model two-fluid model

Potential application of ultrasound-guided thermal ablation in rare liver tumors

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2018年第6期17卷 531-537页

作者： Li-Li Wu Jia-Xin Chen Kai Li Zhong-Zhen Su Ying-lin long Li-Ping Luo Er-Jiao Xu Rong-Qin Zheng Department of Medical Ultrasonics Third Affiliated Hospital of Sun Yat-sen UniversityGuangdong Key Laboratory of Liver Disease ResearchGuangzhou 510630China Department of Medical Ultrasonics Fifth Affiliated Hospital of Sun Yat-sen UniversityZhuhai 519000China

Background: With the advances of imaging techniques, the detection rate of rare liver tumor is increased. However, the therapeutic strategies of the rare liver tumors remain limited. Methods: We analyzed twelve pathologically confirmed rare liver tumors in 8 patients. All of the patients underwent ultrasound(US) guided biopsy and subsequent thermal ablation. The tumors were ablated according to the preoperative plans and monitored by real-time US. CT/MRI fused with contrast enhanced US(CEUS) or three-dimensional(3 D) US-CEUS images were used to guide and assess the ablation zone more accurately during thermal ablation. The rate of technical efficacy was assessed based on the contrast-enhance CT/MRI(CECT/MRI) results one month after ablation. Local tumor progression(LTP), recurrence and complications were followed up and recorded. Results: Among these twelve nodules, nine were subject to US-guided thermal ablation, whereas the other three inconspicuous nodules were subject to CEUS-guided thermal ablation. Intra-procedure CT/MRI-CEUS or 3 D US-CEUS fusion imaging assessments demonstrated that the ablation zone sufficiently covered the original tumor, and no immediate supplementary ablation was required. Additionally, no major complications were observed during the follow-up period. The postoperative CECT/MRI confirmed that the technique success rate was 100%. Within the surveillance period of 13 months, no LTP or recurrence was noted. Conclusions: US-guided thermal ablation was feasible and safe for rare liver tumors. The use of fusion imaging technique might make US-guided thermal ablation as effective as surgical resection, and this technique might serve as a potential therapeutic modality for rare liver tumors in the future.

关键词： Contrast-enhanced ultrasound Thermal ablation Rare liver tumor Fusion imaging

Hilar cholangiocarcinoma:preoperative evaluation with a three dimensional volumetric interpolated breath-hold examination magnetic resonance imaging sequence

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2007年第8期120卷 636-642页

作者： YIN long-lin SONG Bin XU Juan LI Ying-chun Department of Radiology West China Hospital Sichuan University Chengdu 610041 China

Background Early detection and accurate staging are crucial for planning treatment and improving survival rate of hilar cholangiocarcinomas. This study investigated the diagnostic value of a three dimensional, spoiled gradient echo, Tl-weighted magnetic resonance （MR） imaging sequence （3D volumetric interpolated breath-hold examination, 3D-VIBE） in the preoperative evaluation of hilar cholangiocarcinoma. Methods Thirty-one patients with surgically and histologically confirmed hilar cholangiocarcinomas underwent preoperative MR imaging examination. Unenhanced two-dimensional T1- and T2-weighted images, 2D MR cholangiopancreatographs （MRCP）, gadolinium enhanced 3D-VIBE images in the early arterial, late arterial and portal venous phases followed by 2D Tl-weighted images in the equilibrium phase were acquired. Images from 3D-VIBE, 2D T1-weighted enhanced sequences and 2D MRCP were interpreted by two abdominal radiologists through consensus reading in blind manner, focussing on the assessment of the morphological type, the longitudinal extent of tumor infiltration in the bile ducts and the involvement of neighbouring blood vessels. The accuracy of 3D-VIBE and 2D T1-weighted enhanced sequences in assessing the tumor resectability was compared. Results All the 31 tumors were directly displayed and accurately classified on 3D-VIBE images whereas 8 periductal infiltrating tumors （8/31, 25.8%） were not depicted on 2D T1-weighted enhanced images. Using the Bismuth Corlette classification, 3D-VIBE was closer to MRCP in delineating the intraductal extent of tumor infiltration than 2D T1-weighted enhanced （28/31, 90.3%; 10/31, 32.3%; x^2=22.0, P〈0.05）. Involvement of the hepatic artery, the portal venous trunk and their branches was shown more frequently on 3D VIBE than 2D T1-weighted enhanced images. The positive predictive value and accuracy of 3D-VIBE （84.2%; 90.3%） for assessing tumor resectability were higher than those of 2D T1-weighted enhanced images （64.0%; 71.0%, a

关键词： cholangiocarcinoma hilar dynamic imaging magnetic resonance imaging

基于a-IGZO TFTs的低功耗D触发器设计

在线全文

学校读者我要写书评

暂无评论

华南理工大学学报（自然科学版） 2017年第3期45卷 42-47页

作者：姚若河林少龙华南理工大学电子与信息学院广东广州510640

设计了一个基于Pseudo-CMOS逻辑门的低功耗异步复位D触发器电路.该D触发器全部由n型a-IGZO TFTs(薄膜晶体管)构成,采用动态负载替代Pseudo-CMOS拓扑中的二极管连接负载,通过减少电路导通的概率来降低静态功耗.电路的输出级为锁存器,通... 详细信息

设计了一个基于Pseudo-CMOS逻辑门的低功耗异步复位D触发器电路.该D触发器全部由n型a-IGZO TFTs(薄膜晶体管)构成,采用动态负载替代Pseudo-CMOS拓扑中的二极管连接负载,通过减少电路导通的概率来降低静态功耗.电路的输出级为锁存器,通过反馈通路减少由动态负载造成的输出摆幅降低对延迟的影响.将该D触发器应用于环行移位寄存器的设计中,结果表明,该触发器电路可有效降低或非门逻辑电路中的静态功耗.

关键词：薄膜晶体管 D触发器动态负载移位寄存器

Selection of Minimal Test Points Set for Integer-Coded Fault Wise Table

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology of China 2009年第4期7卷 312-316页

作者： Shu-lin Tian Cheng-lin Yang Bing long School of Automation engineering University of Electronic Science and Technology of China Chengdu 610054 China

Test points selection for integer-coded fault wise table is a discrete optimization problem. On one hand, traditional exhaustive search method is computationally expensive. On the other hand, the space complexity of traditional exhaustive is low. A tradeoff method between the high time complexity and low space complexity is proposed. At first, a new fault-pair table is constructed based on the integer-coded fault wise table. The fault-pair table consists of two columns： one column represents fault pair and the other represents test points set that can distinguish the corresponding faults. Then, the rows are arranged in ascending order according to the cardinality of corresponding test points set. Thirdly, test points in the top rows are selected one by one until all fault pair are isolated. During the test points selection process, the rows that contain selected test points are deleted and then the dimension of fault-pair table decreases gradually. The proposed test points selection algorithm is illustrated and tested using an integercoded fault wise table derived from a real analog circuit. Computational results suggest show policies are better than the exhaustive strategy.

关键词： Fault-pair table integer-coded fault wise table optimization test points selection.

Application of Rollout Strategy to Test Points Selection for Integer-Coded Fault Wise Table

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology of China 2009年第4期7卷 308-311页

作者： Cheng-lin Yang Shu-lin Tian Bing long School of Automation engineering University of Electronic Science and Technology of China Chengdu 610054 China

Test points selection for integer-coded fault wise table is a discrete optimization problem. The global minimum set of test points can only be guaranteed by an exhaustive search which is eompurationally expensive. In this paper, this problem is formulated as a heuristic depth-first graph search problem at first. The graph node expanding method and rules are given. Then, rollout strategies are applied, which can be combined with the heuristic graph search algorithms, in a computationally more efficient manner than the optimal strategies, to obtain solutions superior to those using the greedy heuristic algorithms. The proposed rollout-based test points selection algorithm is illustrated and tested using an analog circuit and a set of simulated integer-coded fault wise tables. Computa- tional results are shown, which suggest that the rollout strategy policies are significantly better than other strategies.

关键词： Heuristic graph search integer-coded fault wise table optimization rollout strategy test points selection.

Metabolic tuning of a stable microbial community in the surface oligotrophic Indian Ocean revealed by integrated meta-omics

在线全文

学校读者我要写书评

暂无评论

Marine Life Science & Technology 2022年第2期4卷 277-290页

作者： Zhang-Xian Xie Ke-Qiang Yan ling-Fen Kong Ying-Bao Gai Tao Jin Yan-Bin He Ya-Yu Wang Feng Chen lin lin Zhi-long lin Hong-Kai Xu Zong-Ze Shao Si-Qi Liu Da-Zhi Wang State Key Laboratory of Marine Environmental Science/College of the Environment and Ecology Xiamen UniversityXiamen361005China College of Ocean and Earth Sciences Xiamen UniversityXiamen361005China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Sun Yat-Sen UniversityZhuhai519082China BGI-Shenzhen Beishan Industrial Zone 11th BuildingShenzhen518083China BGI Education Center University of Chinese Academy of SciencesShenzhen518083China Key Laboratory of Marine Genetic Resources Third Institute of OceanographyMinistry of Natural Resources of ChinaXiamen361005China State Key Laboratory Breeding Base of Marine Genetic Resources/Fujian Key Laboratory of Marine Genetic Resources Xiamen361005China Institute of Marine and Environmental Technology University of Maryland Center for Environmental ScienceBaltimoreMD21202USA

Understanding the mechanisms,structuring microbial communities in oligotrophic ocean surface waters remains a major ecological *** redundancy and metabolic tuning are two mechanisms that have been proposed to shape microbial response to environmental ***,little is known about their roles in the oligotrophic surface ocean due to less integrative characterization of community taxonomy and ***,we applied an integrated meta-omics-based approach,from genes to proteins,to investigate the microbial community of the oligotrophic northern Indian *** spatial variabilities of both genomic and proteomic compositions indicated a stable microbial community that was dominated by Prochlorococcus,Synechococcus,and ***,fine tuning of some metabolic functions that are mainly driven by salinity and temperature was ***,a tuning divergence occurred between metabolic potential and activity in response to different environmental *** results indicate that metabolic tuning is an important mechanism for sustaining the stability of microbial communities in oligotrophic *** addition,integrated meta-omics provides a powerful tool to comprehensively understand microbial behavior and function in the ocean.

关键词： Microbial community Metabolic tuning Metaproteomics Metagenomics Oligotrophic ocean

Spindle and Chromosome Analysis of Non-Fertilized Oocytes from Conventional in vitro Fertilization for Non-Male Factor Infertiliy: Significance of Rescue ICSI?

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Reproduction and Contraception 2011年第1期22卷 1-10页

作者： Xiao-lin long, Han-yan LIU Xin-jie CHEN Xiao-fang SUN Center for Reproductive Medicine Research Institute of Gynecology and Obstetrics of Guangzhou Third Affiliated Hospital of Guangzhou Medical University Guangzhou 510150 China

Objective To determine whether rescue intracytoplasmic sperm injection （ICSI） is associated with improved outcomes for non-male factor infertility. Methods The changes of micro-structure, including meiotic spindle and chromosome distribution, sperm penetration, as well as oocyte activation were compared in IVF （in vitro fertilization）fertilization failure （1VF FF） patients, ICSI patients with non-fertilized oocytes （ICSI NF） and oocytes in vitro maturation （IVM）. Results A total of 164 unfertilized oocytes （93 oocytes in IVF and 71 oocytes in ICSI） and 56 IVM oocytes were available for this study. The abnormality of spindle and chromosomes was significantly higher in IVF FF group than that in ICSI NF group or IVM group （abnormal spindle rates were 80.6%, 64.8% and 57.1%, respectively; abnormal chromosome rates were 91.4%, 80.3% and 75.0%, respectively）. No sperm penetration after IVF and sperm expulsion after ICSI were 78.5% and 40.8%, respectively. Activation failure occurred in 16.1% of the IVF FF cases and 49.3% of ICSI NF oocytes. Conclusion Rescue ICSI of fertilization-failed oocytes fails to lead outcome improvement due to the internal defects of oocytes.

关键词： IVF failure ICSI rescue ICSI spindle chromosome outcome

Abnormalities of interhemispheric functional connectivity in individuals with acute eye pain: a resting-state fMRI study

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2019年第4期12卷 634-639页

作者： Zhi-Zhang Dong Fei-Yin Zhu Wen-Qing Shi Yong-Qiang Shu lin-long Chen Qing Yuan Qi lin Pei-Wen Zhu Kang-Cheng Liu You-Lan Min Lei Ye Yi Shao Department of Ophthalmology the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University Department of Ophthalmology the First Affiliated Hospital of Nanchang University Department of Clinical Medicine Queen Mary College of Nanchang University Department of Radiology the First Affiliated Hospital of Nanchang University

AIM: To study the changes of the resting state functional connectivity(rsFC) between acute eye pain(EP) subjects and healthy controls(HCs) in the two hemispheres by using voxel-mirrored homotopic connectivity(VMHC) ***: Totally 20 patients with EP and 20 HCs were enrolled, sex, age, and education were matched, and all subjects were examined by functional magnetic resonance imaging(fMRI) scans at resting-state. The changes of rs FC between the hemispheres were evaluated by the VMHC method according to Gaussian random field(GRF) theory. In order to identify the VMHC, as biomarkers for distinguishing EP and from HC, the receiver operating characteristic curves(ROC) had been analyzed. The relationships were evaluated with Pearson correlation analysis between the mean VMHC signal values and clinical features in these ***: By comparing with health subjects, the significant decreased VMHC values was observed in lingual/calcarine(Brodmann area, BA 30), precentral/postcentral gyrus(PreCG/PosCG; BA 4) and medial frontal gyrus(MFG; BA 8)(false discovery rate corrected <0.01) in the acute EP individuals. The accuracy of area under curve was excellent indicated by the ROC curve analysis of each brain ***: Our study demonstrates preliminary evidence of disrupted interhemispheric rsFC in acute EP in sensorimotor and limbic system and somatosensory cortex, which might give some useful information for understanding the neurological mechanisms in acute EP individuals.

关键词： acute eye pain voxel-mirrored homotopic connectivity functional magnetic resonance imaging resting state