检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

海底可控源电磁接收机及其水合物勘查应用

地球物理学报 2017年第11期60卷 4262-4272页

作者：陈凯景建恩赵庆献罗贤虎涂广红王猛中国地质大学(北京) 北京100083 地下信息探测技术与仪器教育部重点实验室北京100083 广州海洋地质调查局广州510760

海洋可控源电磁法在国外已成为海底天然气水合物调查的有效手段之一.为实现我国海域深水条件下水合物的海洋可控源电磁探测,本文从方法原理出发,采用低功耗嵌入式控制、前端低噪声斩波放大、高精度时间同步和水声通讯等技术,设计并开发... 详细信息

海洋可控源电磁法在国外已成为海底天然气水合物调查的有效手段之一.为实现我国海域深水条件下水合物的海洋可控源电磁探测,本文从方法原理出发,采用低功耗嵌入式控制、前端低噪声斩波放大、高精度时间同步和水声通讯等技术,设计并开发了由承压舱、玻璃浮球、采集电路、电场与磁场传感器、姿态测量装置、声学释放器、USBL定位信标、测量臂、水泥块等部件组成的海底可控源电磁接收机,实现了海洋微弱电磁场信号的高精度采集.海底可控源电磁接收机具有高可靠性、低噪声、低功耗和低时漂的特点.利用研制的海底可控源电磁接收机,在琼东南海域进行水合物勘查,采集得到了可靠的人工源电磁场数据.通过数据处理及反演,获得了研究区海底的电阻率模型,结合地震资料,对高阻异常体进行推断解释,其结果为天然气水合物钻探井位布置提供了电性依据.

关键词：海洋可控源电磁法海底可控源电磁接收机天然气水合物琼东南盆地

Low expression of CDK5RAP3 and DDRGK1 indicates a poor prognosis in patients with gastric cancer

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2018年第34期24卷 3898-3907页

作者： Jian-xian Lin Xin-Sheng Xie Xiong-Feng Weng Chao-Hui Zheng Jian-Wei Xie Jia-Bin Wang Jun Lu Qi-Yue Chen Long-Long Cao Mi Lin Ru-Hong tu Ping Li Chang-Ming Huang Department of Gastric Surgery Fujian Medical University Union Hospital Key Laboratory of Ministry of Education of Gastrointestinal Cancer Fujian Medical University Fujian Key Laboratory of tumor Microbiology Fujian Medical University

AIM To investigate the effects of different levels of expression of CDK5RAP3 and DDRGK1 on long-term survival of patients undergoing radical *** The expression of CDK5RAP3 and DDRGK1 was detected by immunohistochemistry in 135 patients who received standard gastrectomy were enrolled in the study. Western Blot was used to detect the expression of CDK5RAP3 and DDRGK1 in gastric cancer and its adjacent tissues and cell lines. The correlations between the expression of CDK5RAP3 and DDRGK1 and clinicopathological factors were analyzed, and the value of each parameter to the prognosis of the patients was compared. Receiver operating characteristic analysis was used to compare the accuracy of the prediction of clinical outcome by the *** CDK5RAP3 and DDRGK1 expression was downregulated in the gastric cancer compared to its respective adjacent non-tumor tissues. The expression of CDK5RAP3 was closely related to the age of the patients(P = 0.035) and the T stage of the tumor(P = 0.017). The expression of DDRGK1 was correlated with the sex of the patients(P = 0.080), the degree of tumor differentiation(P = 0.036), the histological type(P = 0.036) and the N stage of the tumor(P = 0.014). Low expression CDK5RAP3 or DDRGK1 is a poor prognostic factor for gastric cancer patients. Prognostic analysis showed that the co-expression of CDK5RAP3 and DDRGK1 was an independent prognostic factor correlating with the overall survival of gastric cancer patients. Combined expression analysis of CDK5RAP3 and DDRGK1 may provide a more accurate prognostic value for overall survival.

关键词： Gastric cancer CDK5RAP3 DDRGK1 Prognosis

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

^(235)U气溶胶粒度分布研究

原子能科学技术 2010年第B9期44卷 476-479页

作者：黄宪果涂俊苏容波中国工程物理研究院核物理与化学研究所四川绵阳621900

采用固体径迹探测技术测量了235U气溶胶的粒度分布。将特定条件下产生的235U气溶胶粒子收集在金属采样板上,将固体径迹探测片覆盖在235U气溶胶样品上辐照成像,采用化学蚀刻技术使其显影成像并放大,利用光学显微镜进行有关参量测量。在... 详细信息

采用固体径迹探测技术测量了235U气溶胶的粒度分布。将特定条件下产生的235U气溶胶粒子收集在金属采样板上,将固体径迹探测片覆盖在235U气溶胶样品上辐照成像,采用化学蚀刻技术使其显影成像并放大,利用光学显微镜进行有关参量测量。在特定条件下,235U气溶胶的粒度分布在1.6～8.9μm范围内。

关键词：气溶胶 α径迹化学蚀刻粒度分布

Digestive tract reconstruction using isoperistaltic jejunumlater-cut overlap method after totally laparoscopic total gastrectomy for gastric cancer: Short-term outcomes and impact on quality of life

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2017年第39期23卷 7129-7138页

作者： Ze-Ning Huang Chang-Ming Huang Chao-Hui Zheng Ping Li Jian-Wei Xie Jia-Bin Wang Jian-xian Lin Jun Lu Qi-Yue Chen Long-Long Cao Mi Lin Ru-Hong tu Ju-Li Lin Department of Gastric Surgery Fujian Medical University Union Hospital

AIM To evaluate the short-term outcomes and quality of life(Qo L) in gastric cancer patients undergoing digestive tract construction using the isoperistaltic jejunum-latercut overlap method(IJOM) after totally laparoscopic total gastrectomy(TLTG).METHODS A total of 507 patients who underwent laparoscopic gastrectomy(D2) from January 2014 to March 2016 were originally included in the study. The patients were divided into two groups to undergo digestive tract construction using either IJOM after TLTG(group T, n = 51) or Roux-en-Y anastomosis after laparoscopic-assisted total gastrectomy(LATG)(group A, n = 456). The short-term outcomes and Qo L were compared between the two groups after 1:2 propensity-score matching(PSM). We used a questionnaire to assess Qo *** Before matching, age, sex, tumor size, tumor location, preoperative albumin and blood loss were significantly different between the two groups(P he patients were well balanced in terms of their clinicopathological characteristics, although both blood loss and in-hospital postoperative days in group T were significantly lower than those in group A(P he domains of pain and dysphagia. Among the items evaluating pain and dysphagia, group T tended to report better Qo L("Have you felt pain" and "Have you had difficulty eating solid food")(P he IJOM for digestive tract reconstruction after TLTG is associated with reduced blood loss and less pain and dysphagia, thus improving Qo L after laparoscopic gastrectomy.

关键词： Esophagojejunostomy Overlap Later-cut Totally laparoscopic total gastrectomy Quality of life

Reduction Bending of Thin Crystalline Silicon Solar Cells

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

Semiconductor Photonics and Technology 2009年第1期15卷 30-33页

作者： SheN Lan-xian LIU Zu-ming LIAO Hua tu Jie-lei DENG Shu-kang Solar Energy Research Institute Yunnan Normal University Kunming 650092 CHN

Reported are the results of reduction the bending of thin crystalline silicon solar cells after printing and sintering of back electrode by changing the back electrode paste and adjusting the screen printing parameters without effecting the electrical properties of the *** and experiments showed that the bending of the cell is changed with its thickness of substrate,the thinner cell,the more serious *** bending of the cell is decreased with the thickness decrease of the back contact *** substrate with the thickness of 190 μm printing with sheet aluminum paste shows a relatively lower bend compared with that of the substrate printing with ordinary aluminum paste,and the minimum bend is 0.55 mm which is reduced by 52%.

关键词： thin crystalline silicon solar cells back electrode paste

在线全文

学校读者我要写书评

暂无评论

非洲蜡防印花布图案设计及其生产工艺探讨

上海纺织科技 2005年第9期33卷 26-28页

作者：王华屠恒贤东华大学上海200051

文章对非洲市场的蜡防印花产品进行了分类,阐述了其特点,并对非洲市场上出现的蜡防印花布图案设计按题材进行了归纳;然后结合生产实践对非洲蜡防印花布的生产工艺作了总结。

关键词：印花织物印花图案设计生产工艺非洲蜡防

在线全文

学校读者我要写书评

暂无评论

复合诱变选育虾青素高产菌株及发酵条件优化

中国酿造 2023年第5期42卷 91-96页

作者：涂媛金显蔡俊湖北工业大学工业发酵省部共建协同创新中心湖北省工业微生物重点实验室发酵工程教育部重点实验室湖北武汉430068

以红发夫酵母(Phaffia rhodozyma)PR2为出发菌株,采用紫外(UV)与硫酸二乙酯(DES)进行复合诱变,通过二苯胺平板初筛、摇瓶复筛、遗传稳定性试验,筛选高产虾青素突变菌株,并通过单因素试验对其发酵产虾青素条件进行优化。结果表明,在紫外... 详细信息

以红发夫酵母(Phaffia rhodozyma)PR2为出发菌株,采用紫外(UV)与硫酸二乙酯(DES)进行复合诱变,通过二苯胺平板初筛、摇瓶复筛、遗传稳定性试验,筛选高产虾青素突变菌株,并通过单因素试验对其发酵产虾青素条件进行优化。结果表明,在紫外照射100 s,DES含量1%的最适诱变条件下筛选得到一株高产虾青素突变菌株PUD11,其虾青素产量达到22.16 mg/L,且该突变菌株传代8次仍具有良好的遗传稳定性,其产虾青素的最佳发酵条件为发酵温度22℃、初始pH值5.0、接种量10%、摇瓶转速220 r/min、装液量75 mL/300 mL、发酵时间120 h。在此优化条件下,虾青素产量为31.39 mg/L,较出发菌株提高了106.24%。

关键词：红发夫酵母虾青素紫外诱变硫酸二乙酯诱变发酵条件优化

2014年云南景谷6.6级地震前后活动能量场分析

在线全文

学校读者我要写书评

暂无评论

地震 2016年第3期36卷 125-134页

作者：罗国富屠泓为曾宪伟马禾青杨明芝宁夏回族自治区地震局宁夏银川750001 青海省地震局青海西宁810001

本文将地震释放能量作为地震活动场的基本要素,采用自然正交函数展开方法,系统研究2014年景谷6.6级地震震中区域地震活动能量场的时空特征。结果表明,景谷6.6级地震前能量场的前4个主要特征值对应的典型能量场时间因子都出现明显上升变... 详细信息

本文将地震释放能量作为地震活动场的基本要素,采用自然正交函数展开方法,系统研究2014年景谷6.6级地震震中区域地震活动能量场的时空特征。结果表明,景谷6.6级地震前能量场的前4个主要特征值对应的典型能量场时间因子都出现明显上升变或下降异常,空间等值线形成局部能量高值异常危险区,可能是景谷6.6级地震空间异常的中短期特征。我们还进一步研究了景谷6.6级地震前后空间异常随时间的演变,给出了异常发展变化模式,最后应用研究地震资料的累积次数从物理角度解释异常形成的机制。

关键词：能量场随机函数时空异常危险区 2014景谷6.6级地震

在线全文

学校读者我要写书评

暂无评论

多边形截面薄壁管撕裂卷曲吸能研究

爆炸与冲击 2007年第3期27卷 223-229页

作者：张涛吴英友朱显明刘土光华中科技大学交通学院湖北武汉430074 中国舰船研究设计中心701研究所湖北武汉430064

对薄壁管在准静态载荷下的卷曲撕裂进行了理论分析,并采用显示有限元方法进行了数值模拟。通过分析薄壁管的撕裂能、塑性变形能和摩擦能,讨论了冲头的锥形角、壁厚以及边数等因素对结构吸能的影响。

关键词：理论力学吸能有限元多变形截面薄壁管撕裂