检索结果-南通市图书馆

Extended resection for locally advanced colorectal cancer

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2006年第20期119卷 1675-1676页

作者： wang jian-ping song Xin-ming Department of Gastrointestinopancreatic Surgery First Affiliated Hospital Sun Yat-sen University Guangzhou 510080 China

Colorectal cancer is a common cause of cancer-related mortality. In China, it is one of eight cancers in the cancer control blueprint, which are suggested to have comprehensive treatment. Some patients with colorectal cancer presented no symptoms when they were diagnosed, yet the tumor had already penetrated the intestinal wall and involved adjacent organs. If the tumor is localized at time of diagnosis without distant metastases, it is termed locally advanced colorectal cancer （LACC） regardless of whether there is lymph node metastasis. LACC commonly encountered in clinical practice accounts for 5%-10% of all colorectal cancers.

关键词： MULTIVISCERAL RESECTION CARCINOMA RECTUM COLON

Synthesis of a Novelα-Methylene-β-carboxy-γ-thiobutyrolactones

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2005年第11期16卷 1431-1433页

作者： Xiao Kui wang jian Lei KANG song LI Beijing Institute of Pharmacology ＆ Toxicology Beijing 100850

A new series compounds, α-methylene-β-carboxy-γ-thiobutyrolactones, have been prepared and their biological evaluation in vitro and in vivo have been described. The structures of these compounds were confirmed by ^... 详细信息

关键词： Fatty acid synthase α-methylene-β-carboxy-γ-thiobutyrolactones synthesis.

Direct hydrothermal synthesis and magnetic property of titanate nanotubes doped magnetic metal ions

在线全文

学校读者我要写书评

暂无评论

Journal of University of Science and Technology Beijing 2008年第5期15卷 644-648页

作者： Meili wang Gongbao song jian Li Landong Miao Baoshu Zhang School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621002 China

Pure titanate nanotubes and titanate nanotubes doped with Fe^3＋/Ni^2＋/Mn^2＋ ions were synthesized by the hydrothermal method. In this process,titanate nanotubes were first prepared synchronously with doping Fe^3＋/Ni^2＋/Mn^2＋ ions. The morphology,structure,thermal stability and magnetic property of titanate nanotubes were characterized by X-ray diffraction （XRD）,transmission electron microscope （TEM）,and magnetic measurement. The titanate nanotubes transformed into the anatase titania nanocrystals,and further the mixture of anatase and rutile titania along with increasing temperature. The results indicate that the titanate nanotubes doped with Fe^3＋/Ni^2＋/Mn^2＋ ions are paramagnetic behaviors.

关键词： titanate nanotubes direct hydrothermal synthesis doping magnetic property

Expression of a rice OsARGOS gene in Arabidopsis promotes cell division and expansion and increases organ size

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2009年第1期36卷 31-40页

作者： Bao wang Yalin Sang jian song Xin-Qi Gao Xiansheng Zhang Shandong Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai'an 271018 China

The ARGOS gene in Arabidopsis plays a key role in controlling plant organ size. To determine the function of it＇s ortholog in rice, a putative ARGOS orthologous gene from rice tissues was isolated and designated as OsARGOS. This gene has only one copy in the rice genome. OsARGOS transcripts were detected in most of rice tissues, particularly in the young tissues, and its expression was induced in rice seedlings by the application of either auxin or cytokinin. Arabidopsis plants expressing OsARGOS led to larger organs, such as leaves and siliques, compared with wild-type plants. Interestingly, the root growth was also enhanced in these transgenic Arabidopsis plants. Therefore, the biomass of the transgenic plants was significantly increased. Further analysis revealed that, different from the ARGOS and ARGOS-LIKE genes in Arabidopsis, the OsARGOS gene enlarged organ by an increase in both cell number and cell size. In addition, the transcript levels of several organ size-associated genes regulating either cell division or cell growth were upregulated in the transgenic Arabidopsis plants. We also transferred the OsARGOS gene to rice, but the transgenic plants did not show any changes in organ size compared with the control plants. It is likely that the function of OsARGOS in organ size control depends on other size regulators in rice. The expression of OsARGOS in Arabidopsis may activate the signaling pathways that control cell proliferation and cell expansion during the course of plant growth and development. Since the expression of OsARGOS causes organ enlargement, the potential application of this gene through genetic engineering may significantly improve the production of biomass in agricultural practice.

关键词： Arabidopsis cell number and size OsARGOS organ size rice

小剂量氯胺酮复合地塞米松、舒芬太尼、异丙酚用于男性吸烟患者无痛胃镜检查的临床观察

在线全文

学校读者我要写书评

暂无评论

临床消化病杂志 2024年第1期36卷 31-35页

作者：陈鑫王敏张杰王海霞王建松崔林廊坊市第四人民医院/承德医学院附属医院河北廊坊065700

[目的]探讨小剂量氯胺酮复合地塞米松、舒芬太尼、异丙酚用于男性吸烟患者无痛胃镜检查的临床效果及安全性。[方法]170例接受无痛胃镜检查的男性吸烟患者随机分为氯胺酮组与对照组,每组85例。对照组静脉推注地塞米松5mg、舒芬太尼0.1μg... 详细信息

[目的]探讨小剂量氯胺酮复合地塞米松、舒芬太尼、异丙酚用于男性吸烟患者无痛胃镜检查的临床效果及安全性。[方法]170例接受无痛胃镜检查的男性吸烟患者随机分为氯胺酮组与对照组,每组85例。对照组静脉推注地塞米松5mg、舒芬太尼0.1μg/kg,2min后静脉推注异丙酚1.5~2.5mg/kg;氯胺酮组静脉推注地塞米松5 mg、舒芬太尼0.1μg/kg、氯胺酮0.1mg/kg,2min后静脉推注异丙酚1.5~2.5mg/kg。比较2组诱导时间、检查时间、苏醒时间、定向力恢复时间、异丙酚用量、追加次数、麻醉效果、患者舒适度、不良事件及检查前、后C反应蛋白(CRP)及皮质醇(Cor)、去甲肾上腺素(NE)水平。观察入室即刻(T0)、药物静注完毕(T1)、胃镜通过会厌(T2)、麻醉后3min(T3)、检查结束(T4)时平均动脉压、心率、血氧饱和度。[结果]氯胺酮组与对照组诱导时间、检查时间、苏醒时间、定向力恢复时间比较差异无统计学意义(P>0.05),氯胺酮组异丙酚用量低于对照组(P<0.05)。2组T1时心率、平均动脉压、血氧饱和度降低,T3时有所上升,而对照组T2、T3时降低更明显(P<0.05)。与检查前比较,2组检查后CRP、Cor、NE水平增高,但氯胺酮组增高幅度低于对照组(P<0.05)。氯胺酮组麻醉效果及患者舒适度优于对照组(P<0.05)。⑤氯胺酮组体动、呛咳、呼吸抑制、低血压等不良反应的发生率均低于对照组(P<0.05)。[结论]小剂量氯胺酮复合地塞米松、舒芬太尼、异丙酚可安全有效地用于男性吸烟患者无痛胃镜检查过程。

关键词：胃镜术氯胺酮地塞米松舒芬太尼异丙酚吸烟麻醉投药剂量

Anycast service model and its QoS routing algorithm

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2001年第2期8卷 135-139页

作者： wang jian xin, CHEN song qiao, CHEN jian er (College of Information Science and Engineering, Central South University, Changsha 410083, China) College of Information Science and Engineering Central South University Changsha China

In the Internet, a group of replicated servers is commonly used in order to improve the scalability of network service. Anycast service is a new network service that can improve network load distribution and simplify certain applications. In this paper, the authors described a simple anycast service model in the Internet without significant affecting the routing and protocol processing infrastructure that was already in place, and proposed an anycast QoS routing algorithm for this model. The algorithm used randomized method to balance network load and improve its performance. Several new techniques are proposed in the algorithm, first, theminimum hops for each node are used in the algorithm, which are used as metric for computing the probability of possible out links. The metric is pre computed for each node in the network, which can simplify the network complexity and provide the routing process with useful information. Second, randomness is used at the link level and depends dynamically on the routing configuration. This provides great flexibility for the routing process, prevents the routing process from overusing certain fixed routing paths, and adequately balances the delay of the routing path. the authors assess the quality of QoS algorithm in terms of the acceptance ratio on anycast QoS requests, and the simulation results on a variety of network topologies and on various parameters show that the algorithm has good performances and can balance network load effectively.

关键词： QoS anycast service network routing randomized algorithm

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

处方和工艺对盐酸美金刚片含量均匀度的影响

中南药学 2024年第3期22卷 668-672页

作者：肖颖黄引钟莹蔡国伟王健松广州白云山医药集团股份有限公司白云山制药总厂/广东省化学药原料与制剂关键技术研究企业重点实验室广州510515

目的研究处方中的辅料及工艺对盐酸美金刚片含量均匀度的影响。方法采用粉末直接压片工艺,通过单因素试验,考察处方中填充剂种类及型号、混合工艺对含量均匀度的影响。结果盐酸美金刚与5倍量的硅化微晶纤维素90加入混合机中预混10 min,... 详细信息

目的研究处方中的辅料及工艺对盐酸美金刚片含量均匀度的影响。方法采用粉末直接压片工艺,通过单因素试验,考察处方中填充剂种类及型号、混合工艺对含量均匀度的影响。结果盐酸美金刚与5倍量的硅化微晶纤维素90加入混合机中预混10 min,再加入剩余的物料,8 r·min^(-1)混合30 min,能实现最佳的含量均匀度。结论本研究筛选出了适合粉末直压工艺填充剂硅化微晶纤维素90,考察了混合工艺,优选了2次混合法,获得了良好含量均匀度。

关键词：盐酸美金刚片直接压片含量均匀度

在线全文

学校读者我要写书评

暂无评论

基于数字孪生的城市交通流量可视预测研究

计算机技术与发展 2024年第7期34卷 192-198页

作者：王健松李学俊王桂娟郭皓吴亚东西南科技大学计算机科学与技术学院四川绵阳621010 四川轻化工大学计算机科学与工程学院四川自贡645002

由于城市路网数据的复杂性和动态性,直接解读各道路关联关系变得困难,直接连接性的不确定性也影响了预测准确性。为解决这些问题,利用出租车轨迹数据,结合图卷积神经网络,提出了数字孪生基础上的城市交通流量智能可视预测框架。为提高... 详细信息

由于城市路网数据的复杂性和动态性,直接解读各道路关联关系变得困难,直接连接性的不确定性也影响了预测准确性。为解决这些问题,利用出租车轨迹数据,结合图卷积神经网络,提出了数字孪生基础上的城市交通流量智能可视预测框架。为提高预测精度,根据历史流量数据创建了路网的时空关联图,构建了时空图卷积网络的ASTRG-GCN交通流量预测模型。通过数字孪生技术,将动态交通数据和虚拟三维交通场景融合,实时模拟交通场景,为城市交通优化提供决策支持。最终,设计并实现了城市交通流量可视分析框架,使用户能够高效分析交通运行态势。实验结果表明,该模型预测精度在两个数据集上高于对比算法。数字孪生的可视分析系统实现了交通拥堵识别、交通场景模拟和交通变化对比等效果,为交通规划者提供了决策支持。

关键词：数字孪生城市交通轨迹数据流量预测可视化分析

Global Spherically Symmetric Solutions for a Coupled Compressible Navier–Stokes/Allen–Cahn System

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第8期40卷 2037-2064页

作者： Chang Ming song jian Lin ZHANG Yuan Yuan wang Department of Applied Mathematics School of Mathematics and Information ScienceZhongyuan University of TechnologyZhengzhou 450007P.R.China

In this paper,we consider the global spherically symmetric solutions for the initial boundary value problem of a coupled compressible Navier–Stokes/Allen–Cahn system which describes the motion of two-phase viscous compressible *** prove the existence and uniqueness of global classical solution,weak solution and strong solution under the assumption of spherically symmetry condition for initial dataρ0 without vacuum state.

关键词： Diffuse interface model global solutions Navier-Stokes equations Allen-Cahn equation spherically symmetry