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Search Results: 1 - 10 of 105312 matches for " LIU Xue-Sheng "
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A High-Energy Good-Beam-Quality Krypton-Lamp-Pumped Nd:YAG Solid-State Laser with One Pump Cavity
A High-Energy Good-Beam-Quality Krypton-Lamp-Pumped Nd:YAG Solid-State Laser with One Pump Cavity

LIU Xue-Sheng,WANG Zhi-Yong,YAN Xin,CAO Ying-Hua,

中国物理快报 , 2008,
Abstract: We investigate a high-energy good-beam-quality krypton-lamp-pumped pulsed Nd:YAG solid-state laser with one pump cavity. The symmetrical resonator laser is developed and is rated at 80J with beam parameter product 12mm mrad. The total system electro-optics efficiency of the lamp-pumped YAG laser is as high as 3.3% and the stability of output energy is ±2% with pulse width tunable between 0.1ms and 10ms. The experimentalresults are consistent with the theoretical analysis and simulation.
Method for Requirement Acquirement Based on Domain Model
基于领域模型的需求获取方法

CHENG Xue-sheng,WANG Cong,
程学生
,王聪

计算机应用研究 , 2006,
Abstract: This paper provides a method for requirement acquirement based on domain model. The method finds the common characters of the application system, and abstracts these characters to form the domain model, which can direct the users to provide the system requirements completely.
Temozolomideresistanceinhighgradegliomas#br#
Temozolomideresistanceinhighgradegliomas#br#

WEI Xiang-yu, XIE Chao-ran, YOU Chao-guo, CHEN Zheng, ZHENG Xue-sheng
WEI Xiang-yu
, XIE Chao-ran, YOU Chao-guo, CHEN Zheng, ZHENG Xue-sheng

- , 2018, DOI: 10.3969/j.issn.1674-8115.2018.01.022
Abstract: High grade gliomas are always the research focus in the field of neurosurgery due to their poor prognosis despite the current standard therapeutic?regimen?of?surgical?resection?followed?by?radiation?therapy?and?chemotherapy.?Alkylating?agent?temozolomide?has?been?established?as?the? standard?chemotherapy?while?its?resistance?inevitable?during?treatment.?This?phenomenon?seriously?influences?the?prognosis?of?patients?suffering?from? high grade gliomas. This review aims to elucidate temozolomide chemoresistance mechanisms through three chapters including O6-methylguanine-DNA methyltransferase?(MGMT)?methylation,?mismatch?repair?mutation?and?epigenetic?regulation?consisting?of?p21,?chromatin?and?histone,?Y-box?binding? protein-1 and microRNAs.
:High grade gliomas are always the research focus in the field of neurosurgery due to their poor prognosis despite the current standard therapeutic?regimen?of?surgical?resection?followed?by?radiation?therapy?and?chemotherapy.?Alkylating?agent?temozolomide?has?been?established?as?the? standard?chemotherapy?while?its?resistance?inevitable?during?treatment.?This?phenomenon?seriously?influences?the?prognosis?of?patients?suffering?from? high grade gliomas. This review aims to elucidate temozolomide chemoresistance mechanisms through three chapters including O6-methylguanine-DNA methyltransferase?(MGMT)?methylation,?mismatch?repair?mutation?and?epigenetic?regulation?consisting?of?p21,?chromatin?and?histone,?Y-box?binding? protein-1 and microRNAs
Design and Implementation of Software Structure in Mobile Communication
移动通信软件框架的设计与实现

GONG Xue-Sheng,MA Hong-Lian,DING Nan,
宫学生
,马洪连,丁男

计算机系统应用 , 2010,
Abstract: This paper proposes and implements a solution of software structure in mobile communication based on wait-stop protocol and plugin management. In Window Mobile environment, the solution takes advantage of object-orientation, callback function and multi-thread technologies. It implements and packs network communication interface based on wait-stop protocol. In addition, by proposing plugin manager for new business' extension, this paper proposes a more complete basic software structure, especially by adding new business to the structure. Experiments show that the solution is effective in instant messenger and streaming business.
Ametryn residues and its degradation dynamics in pineapple and soil
阿灭净在菠萝与土壤中的残留及消解动态研究

LI Xue-Sheng,LU Zhi-Xin,L IN Ming-Zhen,
李雪生
,卢植新,林明珍

中国生态农业学报 , 2006,
Abstract: 采用气相色谱(GC-NPD)分析技术测定除草剂阿灭净在菠萝与土壤中的残留及消解动态结果表明,GC-NPD方法的最小检出量为0.0232ng,菠萝及土壤的最小检出浓度分别为0.002mg/kg和0.005mg/kg,GC-NPD方法回收率分别为87.23%~92.10%和88.80%~93.77%。喷施阿灭净80%WP4800g(a.i/)hm2,处理检测出菠萝与土壤中原始沉积量分别为0.1448~0.1646mg/kg和3.3318~3.5536mg/kg,消解半衰期分别为29.17~29.45d和25.75~30.68d,按阿灭净用量4800g(a.i/)hm2施药菠萝1次,间隔期为10d,菠萝果实残留量2年分别为0.1646mg/kg和0.1448mg/kg,参照欧共体的MRL值0.2mg/kg,按上述阿灭净剂量方法施用菠萝是安全的。
Co-Immobilization of Permeabilized Meiothermus sp. Cells Containing Trehalose Synthase
亚栖热菌透性化细胞的耦合固定化研究

ZHANG Jun,CHEN Ying,CHEN Xiao-yun,QI Xin,WEI Xue-sheng,
张峻
,陈颖,陈晓云,齐欣,魏雪生

中国生物工程杂志 , 2007,
Abstract: 将海藻酸盐凝胶包埋法与交联法和聚电解质静电自组装覆膜法相耦合,对含有海藻糖合酶活性的亚栖热菌的透性化细胞进行了固定化研究。结果表明,利用重氮树脂和聚苯乙烯磺酸钠对海藻酸凝胶微球交替覆膜,可以显著提高凝胶微球在磷酸盐缓冲液中的稳定性,以碳二亚胺对固定化细胞进行交联处理则可以提高固定化细胞中海藻糖合酶的热稳定性。透性化细胞经包埋-交联-覆膜耦合固定化后,酶活回收率为32%,最适酶反应pH值由6.5左右升至7.0左右,最适反应温度未变,仍为60℃。所得固定化细胞间歇反应时,催化麦芽糖转化为海藻糖的转化率可达60%,重复使用4次(每次50℃、反应24h),酶活损失小于20%,转化率可保持在50%以上。
Three-dimensional Seismic-data Parallel Volume Rendering Algorithm
三维地震数据场的并行体绘制算法

YANG Lei,LI Ken-li,QI Xue-sheng,PENG Cheng-bin,
杨磊
,李肯立,齐雪生,彭成斌

计算机科学 , 2008,
Abstract: Ray-casting algorithm is an elementary algorithm which is used widely and based on volume rendering,but the key problem is the lower speed of rendering. In order to accelerate the rendering speed of Ray-casting algorithm,based on the parallelism of both between the ray and inner the ray,then using the characteristic of the three dimension of seismic-data field and the special method of file memory on the condition of cluster,we propose a highly efficiency parallel volume rendering algorithm for three dimens...
Using Similarity Sequence for Shot Organization in Video Retrieval
相似顺序图用于视频镜头的组织

BAI Xue-sheng,XU Guang-you,SHI Yuan-chun,
白雪生
,徐光档,史元春

软件学报 , 1999,
Abstract: Shot organization is very important in content-based video retrieval, but in most cases automatic shot organization methods fail to give satisfactory results, thus human-involved interactive organization is required. In this paper, a new shot organization method called similarity sequence is proposed, which reorders the r-frames of shot and makes similar r-frame appear near each other in the generated sequence, thus provides an effective interactive organizing interface. To compare the performance of different sequences, a distance measure called similarity distance is proposed, upon which a gene algorithm calculating similarity sequence is developed and applied to r-frame sequence reordering in shot organization. Basic ideas and algorithm modules are given in detail, also with experimental results and analysis.
Research on Anchorperson Detection Method in News Video
新闻视频中口播帧检测方法的研究

MA Yu-fei,BAI Xue-sheng,XU Guang-you,SHI Yuan-chun,
马宇飞
,白雪生,徐光右,史元春

软件学报 , 2001,
Abstract: 新闻视频分析是视频分析领域的重要课题.提出了一种基于知识的新闻视频分析方法——二阶段模板匹配法,用于检测新闻节目中主持人口播镜头,从而为新闻单元的定位提供基本依据.该方法具有通用性和实时性的特点,可以在新闻视频的自动分析或自动索引系统中得到实际应用.
Using Shot Frequency in Video Retrieval
镜头频度用于视频检索的研究

BAI Xue-sheng,XU Guang-you,SHI Yuan-chun,
白雪生
,徐光祐,史元春

软件学报 , 1999,
Abstract: In the film, television and many other videos, exciting video sections are usually reflected by their frequent shot changes, and such sections are the most frequently objects in retrieval of this kind of video. In this paper, a method on retrieving videos according to their shot change frequencies is presented. Scene transition analysis has done on real videos, and video segmentation algorithm for both cut and dissolve are developed. To lessen the influence of error and missing shot segmentations, a robust calculation method of shot frequency on shot sequence acquired is proposed. Basic ideas and algorithm modules are given in detail, also with the experimental results on film video and analysis.
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