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基于S变换双阈值法的汽车零部件载荷谱加速编辑
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作者 姚凌云 林勇杰 李丽 《中国机械工程》 EI CAS CSCD 北大核心 2024年第2期215-220,共6页
针对S变换编辑法加速编辑效果不佳的问题,提出了一种基于S变换双阈值编辑方法。该方法先对载荷谱进行S变换以获取最大幅值谱,在以双阈值识别并保留的幅值谱片段为依据保留对应的载荷谱片段后,再将其拼接成加速后的载荷谱,最后对比分析S... 针对S变换编辑法加速编辑效果不佳的问题,提出了一种基于S变换双阈值编辑方法。该方法先对载荷谱进行S变换以获取最大幅值谱,在以双阈值识别并保留的幅值谱片段为依据保留对应的载荷谱片段后,再将其拼接成加速后的载荷谱,最后对比分析S变换双阈值编辑法与S变换编辑法编辑的加速谱的统计参数、功率谱密度、穿级计数和疲劳仿真结果。研究结果表明,S变换双阈值编辑法可明显压缩原始载荷时间,且其压缩效率高于S变换编辑法,转向节的疲劳损伤和寿命分析误差更小,适用于汽车零部件载荷谱加速编辑研究。 展开更多
关键词 s变换 最大幅值谱 双阈值 疲劳计算 载荷谱加速编辑
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Liver Transplantation (in Chinese), revised edition, Edited by Shu-Sen Zheng. Pp843. Beijing: People's Medical Publishing House, 2012. ISBN: 978-7-117-15494-9/R.15495. ¥RMB 158 被引量:3
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《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS 2012年第6期649-649,共1页
Liver Transplantation (in Chinese), revised edition, edited by Professor Shu-Sen Zheng and prefaced by Professor Guo-Wei Sang, has just been published. The revised edition is mainly based on the clinical practice of t... Liver Transplantation (in Chinese), revised edition, edited by Professor Shu-Sen Zheng and prefaced by Professor Guo-Wei Sang, has just been published. The revised edition is mainly based on the clinical practice of the Liver Transplant Center, the First Affiliated Hospital, Zhejiang University and the experience 展开更多
关键词 in Chinese BEIJING edited by shu-sen Zheng People’s Medical Publishing House Pp843 R.15495 RMB 158
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S60 3rd Edition简介及其应用开发步骤
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作者 刘晓国 《程序员》 2007年第4期115-119,共5页
S60 3rd Edition的重大变化包括:针对ARM架构的ABI编译器、实时内核、平台安全性等,本文旨在对这些变化做一个详述,并且介绍了基于这一平台的开发步骤。
关键词 edition s60 开发 应用 实时内核 编译器 ARM 安全性
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Notification China Today's new e-mall addresses for each edition are now in operation! So writel Share your views and comments with us,and with fellow subscribers
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《China Today》 2002年第7期23-23,共1页
Dear Readers,Our email address, chinatoday@263.net, is defunct. We now have separateaddresses for each of our editions. They are:
关键词 Notification China Today’s new e-mall addresses for each edition are now in operation
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The Ming Dynasty Printing and Dissemination of Wang Yangming’s Works in Guizhou:On the 1535 Guiyang Edition of A New Supplementary Edition of Master Wang Yangming’s Writings
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作者 Zhang Xinmin 《孔学堂》 2020年第3期I0004-I0015,共12页
After Wang Yangming experienced the revelation of Confucian philosophy at Longchang,he disseminated his heart-mind doctrine by engaging in teaching.A great number of scholars in Guizhou followed him and formed the Qia... After Wang Yangming experienced the revelation of Confucian philosophy at Longchang,he disseminated his heart-mind doctrine by engaging in teaching.A great number of scholars in Guizhou followed him and formed the Qian sub-school of the heartmind philosophy,the earliest of local Yangming sub-schools in the country.roughout the Zhengde and Wanli periods of the Ming dynasty,Yangming scholars and local ocials in favor of the heart-mind philosophy worked in collaboration to collate and print six books of Wang’s works in Guizhou.Among these,A New Supplementary Edition of Master Wang Yangming’s Writings represents the most fruitful e ort by both government ocials(Wang Xing)and local scholars(Chen Wenxue and Ye Wu).As an o print block-carving edition of Wang Yangming’s collections in the early years,it is extremely treasured for its rarity of edition and historical value.e profusion of printing of Wang’s works in Guizhou re ects the wide circulation of his heart-mind doctrines in China’s southwest frontier regions,vividly mirroring the growth of Wang’s philosophy outside cultural centers as well as the complicated history of interactive in uence between Chinese marginal and central cultures. 展开更多
关键词 Wang Yangming’s works A New supplementary edition of Master Wang Yangming’s Writings Yangming scholars of the Qian sub-school frontier culture intellectual dissemination
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贡山三尖杉的新名称(Cephalotaxus talonensis Cheng et Feng ex S.G.Lu et X.D.Lang)及分类地位(英文) 被引量:1
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作者 郎学东 苏建荣 陆树刚 《植物研究》 CAS CSCD 北大核心 2013年第1期4-6,共3页
提议贡山三尖杉的新名称Cephalotaxus talonensis Cheng et Feng ex S.G.Lu et X.D.Lang替代不合法的旧名称Cephalotaxus lanceolata K.M.Feng in Cheng et al.(晚出同名)。对比贡山三尖杉和三尖杉Cephalotaxus fortunei Hooker的模式... 提议贡山三尖杉的新名称Cephalotaxus talonensis Cheng et Feng ex S.G.Lu et X.D.Lang替代不合法的旧名称Cephalotaxus lanceolata K.M.Feng in Cheng et al.(晚出同名)。对比贡山三尖杉和三尖杉Cephalotaxus fortunei Hooker的模式标本和自然生长状态下的叶片形态,支持将贡山三尖杉处理为种的等级,不赞同Silba(1990)将贡山三尖杉降为三尖杉的变种[Cephalotaxus fortunei Hooker var.lanceolata(Feng)Silba]。文中提供4幅参照图片。 展开更多
关键词 三尖杉科 Cephalotaxus talonensis cheng ET Feng EX s G LU ET X D Lang 新名称
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Harnessing the potential of gene editing technology using CRISPR in inflammatory bowel disease 被引量:1
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作者 Viktor Limanskiy Arpita Vyas +1 位作者 Lakshmi Shankar Chaturvedi Dinesh Vyas 《World Journal of Gastroenterology》 SCIE CAS 2019年第18期2177-2187,共11页
The molecular scalpel of clustered regularly interspersed short palindromic repeats/CRISPR associated protein 9(CRISPR/Cas9) technology may be sharp enough to begin cutting the genes implicated in inflammatory bowel d... The molecular scalpel of clustered regularly interspersed short palindromic repeats/CRISPR associated protein 9(CRISPR/Cas9) technology may be sharp enough to begin cutting the genes implicated in inflammatory bowel disease(IBD) and consequently decrease the 6.3 billion dollar annual financial healthcare burden in the treatment of IBD. For the past few years CRISPR technology has drastically revolutionized DNA engineering and biomedical research field. We are beginning to see its application in gene manipulation of sickle cell disease,human immunodeficiency virus resistant embryologic twin gene modification and IBD genes such as Gatm(Glycine amidinotransferase, mitochondrial),nucleotide-binding oligomerization domain-containing protein 2, KRT12 and other genes implicated in adaptive immune convergence pathways have been subjected to gene editing, however there are very few publications. Furthermore,since Crohn's disease and ulcerative colitis have shared disease susceptibility and share genetic gene profile, it is paramount and is more advantageous to use CRISPR technology to maximize impact. Although, currently CRISPR does have its limitations due to limited number of specific Cas enzymes, off-target activity,protospacer adjacent motifs and crossfire between different target sites. However,these limitations have given researchers further insight on how to augment and manipulate enzymes to enable precise gene excision and limit crossfire between target sites. 展开更多
关键词 Clustered regularly interspersed short palindromic REPEATs INFLAMMATORY BOWEL DIsEAsE Crohn’s DIsEAsE Ulcerative colitis GENE excision GENE editING GENE therapy Financial impact of INFLAMMATORY BOWEL DIsEAsE on healthcare Clustered regularly interspersed short palindromic REPEATs crossfire
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A Memoir of Beijing Opera Performers: Cheng Yanqiu’s Early Life and His Art
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作者 ZHANG Yi-he LIU Yue 《Journal of Literature and Art Studies》 2021年第12期1034-1040,共7页
As one of the greatest m asters of Dan 1 role performers in Beijing Opera history,Cheng Yanqiu had a very hard time in his childhood in learning the art.In this article,the author has reviewed his early life and probe... As one of the greatest m asters of Dan 1 role performers in Beijing Opera history,Cheng Yanqiu had a very hard time in his childhood in learning the art.In this article,the author has reviewed his early life and probed into the help of Luo Yinggong who supported for his great su ccess.The author has also explored the art of Cheng’s singing,his study from Wang Yaoqing and explored how he created the melodies as well as trying to solve his making-up mystery. 展开更多
关键词 Beijing Opera performer Dan role chengs school art
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EIZO Flexible Edition——显示器配置,随心所欲
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《印刷质量与标准化》 2006年第9期12-12,共1页
关键词 19英寸显示器 EIZO edition FLEXsCAN 配置 LCD显示器 新闻发布会 s2000
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The Relation between Genetic Difference for Parents of Hybrid Rice and Heterosis
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作者 Xudong Zhu Xieli Tong +3 位作者 Ju Zhao Ziliang Zhu Dan Zhu Qingming Zhou 《Agricultural Sciences》 CAS 2023年第4期485-498,共14页
Exploring the indica-japonica differentiation in parents of hybridization can provide theoretical bases for utilizing inter-subspecific heterosis. In this study, 5 sterile lines and 18 self-bred restorer lines were us... Exploring the indica-japonica differentiation in parents of hybridization can provide theoretical bases for utilizing inter-subspecific heterosis. In this study, 5 sterile lines and 18 self-bred restorer lines were used as female parents and male parents respectively. Then 90 combinations were constructed by incomplete diallel cross followed by relationship analysis between parental Cheng’s index difference value and Euclidean distance and heterosis. The results showed a significant correlation between several phenotype values, super male parent heterosis and control heterosis and Euclidean distance or Cheng’s index difference value. However, it was no significant correlation for yield. Further analysis found a common interval, 3.41 - 3.46 for Euclidean distance and 3 - 4 for cheng’s index difference value of parents, which was significant or high significant positive correlated with phenotype value, super male parent and control heterosis of main yield traits. This illustrates that the larger the genetic difference of parents was, the stronger the heterosis combinations were, when the genetic differences of parents were in an appropriate range. 展开更多
关键词 Indica and Japonica subspecies HETEROsIs chengs Index Euclidean Distance
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洪桂医案的版本流传及证治特色述要
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作者 卜菲菲 王鹏 《山西中医药大学学报》 2024年第4期375-378,共4页
新安医家洪桂,家传世医,幼承家学,精通内科杂病。撰有《抑隅堂医案》,后以《洪桂医案选》入录于《新安医籍丛刊·医案医话类(三)》中,另一著作《月芬夫子医案》收入上海大学出版社2018年出版的《珍稀中医稿钞本丛刊·新安卷》... 新安医家洪桂,家传世医,幼承家学,精通内科杂病。撰有《抑隅堂医案》,后以《洪桂医案选》入录于《新安医籍丛刊·医案医话类(三)》中,另一著作《月芬夫子医案》收入上海大学出版社2018年出版的《珍稀中医稿钞本丛刊·新安卷》。洪氏临证涉及内、外、妇、儿各科病证,方论严谨不离经典,紧密结合临床;重视气血,强调辨证,辨寒热、辨气血、辨虚实;固本培元,重视脾胃;喜用鲜药,用药轻灵,动静刚柔相配。洪桂学术思想及其临床经验对后世弟子及其后裔颇具影响。目前,中国知网仅有1篇相关研究文献,尚未能充分反映洪桂的相关学术思想。探究洪氏生平、著作概况、证治特色等方面,以期补充现有研究之不足,为现代临床辨治思路及用药提供参考。 展开更多
关键词 洪桂 洪桂医案 月芬夫子医案 版本流传 证治特色
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霍山石斛多糖通过激活GSK-3β信号通路减轻大鼠心肌缺血-再灌注损伤 被引量:9
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作者 房雪 韩吉春 +2 位作者 李德芳 王凤华 郑秋生 《中药材》 CAS 北大核心 2017年第4期925-930,共6页
目的:研究霍山石斛多糖抗心肌缺血-再灌注损伤的作用。方法:采用Langendorff离体灌流系统建造大鼠离体缺血-再灌注损伤模型。实验分为正常对照组(不停灌处理)、模型组(停灌20 min)及霍山石斛多糖低、中、高浓度(停灌前灌流已配制浓度为... 目的:研究霍山石斛多糖抗心肌缺血-再灌注损伤的作用。方法:采用Langendorff离体灌流系统建造大鼠离体缺血-再灌注损伤模型。实验分为正常对照组(不停灌处理)、模型组(停灌20 min)及霍山石斛多糖低、中、高浓度(停灌前灌流已配制浓度为0.1、0.5、1.0 mg/L的KH液10 min)组。利用生物多导记录仪连续测定血流动力学参数。通过TTC染色检测心肌梗死面积。并用ELISA法检测冠脉流出液中肌酸激酶(CK)和乳酸脱氢酶(LDH)的活性。ELISA法检测心肌组织中超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量、还原型谷胱甘肽/氧化型谷胱甘肽(GSH/GSSG)比率、白介素6(IL-6)和肿瘤坏死因子α(TNF-α)的含量。利用HE染色和TUNEL法分别检测心肌细胞的坏死和凋亡。Western blot检测心肌组织中GSK-3β的磷酸化水平。结果:与正常对照组比较,模型组出现严重的心肌坏死和极高的凋亡率,心功能下降,冠脉流出液中LDH和CK水平显著升高,心肌组织中MDA、IL-6和TNF-α含量显著升高,SOD的活性与GSH/GSSG比值均显著降低(P<0.01)。与模型组比较,霍山石斛多糖中、高剂量组的心肌坏死程度、梗死面积和细胞凋亡率显著降低,心功能显著改善;冠脉流出液中LDH、CK水平逐渐降低;心肌组织中MDA、TNF-α及IL-6含量显著降低,SOD活性和GSH/GSSG比值显著升高(P<0.01)。高剂量霍山石斛多糖可显著降低心肌细胞凋亡指数,提高心肌组织中GSK-3β磷酸化水平。结论:霍山石斛多糖具有显著的抗心肌缺血-再灌注损伤作用,其作用机制可能与激活GSK-3β信号通路发挥抗氧化、抗炎和抗凋亡有关。 展开更多
关键词 霍山石斛多糖 心脏保护 抗氧化 抗炎 抗凋亡 GsK-3Β
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基于B/S+C/S模式的期刊网络采编系统研究及其应用 被引量:3
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作者 王权 《图书与情报》 CSSCI 北大核心 2010年第6期94-96,共3页
文章分析了现在大部分期刊网络采编管理系统的现状及存在的问题,提出基于B/S+C/S模式的期刊网络采编系统的解决方案,用Powerbuilder及PHP和SQL Server2005实现了期刊网络采编管理系统,运行结果表明整个系统具有很强的可移植性、通用性... 文章分析了现在大部分期刊网络采编管理系统的现状及存在的问题,提出基于B/S+C/S模式的期刊网络采编系统的解决方案,用Powerbuilder及PHP和SQL Server2005实现了期刊网络采编管理系统,运行结果表明整个系统具有很强的可移植性、通用性与可扩展性。 展开更多
关键词 B/s%PLUs%C/s模式 B/s模式 C/s模式 期刊网络采编系统
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动态通用编辑界面在B/S模式中设计 被引量:1
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作者 孙雷 《电脑知识与技术》 2005年第11期9-11,共3页
通常开发基于关系型数据库的系统时,先要在后台的数据库中把表的字段属性信息都设定,但有些用户需要经常在应用中建立或修改数据库表结构.本文介绍的通用编辑界面,以B/S模式为用户提供在前台界面上进行后台表结构和表的建立和修改功能.... 通常开发基于关系型数据库的系统时,先要在后台的数据库中把表的字段属性信息都设定,但有些用户需要经常在应用中建立或修改数据库表结构.本文介绍的通用编辑界面,以B/S模式为用户提供在前台界面上进行后台表结构和表的建立和修改功能.系统采用MVC设计模式,基于Struts框架包进行开发.论文重点介绍了界面的动态实现过程. 展开更多
关键词 动态编辑 数据库 Bs模式 编辑界面
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基于Gappy POD的S形扩压器稳态出口流场预测方法研究 被引量:2
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作者 方成 周建华 王孝利 《科学技术与工程》 北大核心 2017年第9期84-90,共7页
针对实现主动流动控制需要对流场快速获知,提出通过扩压器壁面静压测量值预测出口流场的设想。利用已有的Gappy POD方法实现预测,但该方法在高模态条件下计算精度差。为解决此问题,在已有方法基础上对计算过程中每一步迭代误差进行不同... 针对实现主动流动控制需要对流场快速获知,提出通过扩压器壁面静压测量值预测出口流场的设想。利用已有的Gappy POD方法实现预测,但该方法在高模态条件下计算精度差。为解决此问题,在已有方法基础上对计算过程中每一步迭代误差进行不同处理,得到Method_1和Method_2。计算结果表明,在静压测点数足够条件下,两种方法能够实现更高精度的计算;并且在不同程度上解决了已有方法在高模态下计算精度差的问题。另外,当测点数达到40时,Method_2计算精度更高。 展开更多
关键词 主动流动控制 s形扩压器 流场预测 改进型Gappy POD
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Treatment of abdominal compartment syndrome in severe acute pancreatitis patients with traditional Chinese medicine 被引量:34
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作者 Min-Jie Zhang Guo-Lei Zhang +2 位作者 Wen-Bin Yuan Jun Ni Li-Feng Huang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第22期3574-3578,共5页
AIM: To investigate the therapeutic effect of traditional Chinese traditional medicines Da Cheng Qi Decoction (Timely-Purging and Yin-Preserving Decoction) and Glauber's salt combined with conservative measures on... AIM: To investigate the therapeutic effect of traditional Chinese traditional medicines Da Cheng Qi Decoction (Timely-Purging and Yin-Preserving Decoction) and Glauber's salt combined with conservative measures on abdominal compartment syndrome (ACS) in severe acute pancreatitis (SAP) patients. METHODS: Eighty consecutive SAP patients, admitted for routine non-operative conservative treatment, were randomly divided into study group and control group (40 patients in each group). Patients in the study group received Da Cheng Qi Decoction enema for 2 h and external use of Glauber's salt, once a day for 7 d. Patients in the control group received normal saline (NS) enema. Routine non-operative conservative treatments included non-per os nutrition (NPON), gastrointestinal decompression, life support, total parenteral nutrition (TPN), continuous peripancreatic vascular pharmaceutical infusion and drug therapy. Intra-cystic pressure (ICP) of the two groups was measured during treatment. The effectiveness and outcomes of treatment were observed and APACHE Ⅱ scores were applied in analysis. RESULTS: On days 4 and 5 of treatment, the ICP was lower in the study group than in the control group(P < 0.05). On days 3-5 of treatment, acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) scores for the study and control groups were significantly different (P < 0.05). Both the effectiveness and outcome of the treatment with Da Cheng Qi Decoction on abdominalgia, burbulence relief time, ascites quantity, cyst formation rate and hospitalization time were quite different between the two groups (P < 0.05). The mortality rate for the two groups had no significant difference. CONCLUSION: Da Cheng Qi Decoction enema and external use of Glauber's salt combined with routine non-operative conservative treatment can decrease the intra-abdominal pressure (IAP) of SAP patients and have preventive and therapeutic effects on abdominal compartment syndrome of SAP. 展开更多
关键词 Da cheng Qi Decoction Glauber's salt traditional Chinese medicine severe acute pancreatitis Abdominal compartment syndrome
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Relationship of Parental Indica-Japonica Indexes with Yield and Grain Quality Traits of Japonica Hybrid Rice in Northern China 被引量:1
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作者 WANG Yan-rong QIu Fu-lin HUA Ze-tian DAI Gui-jin 《Rice science》 SCIE 2010年第3期199-205,共7页
Taking the main parents (10 male sterile lines and 10 restorer lines) and their 100 combinations of japonica hybrid rice in northern China as materials, the relationships of parental indica-japonica indexes determin... Taking the main parents (10 male sterile lines and 10 restorer lines) and their 100 combinations of japonica hybrid rice in northern China as materials, the relationships of parental indica-japonica indexes determined by the methods of the Cheng’s index as well as simple sequence repeat (SSR) markers with yield and grain quality traits of hybrid rice were studied. For the parents, the Cheng’s index (Chi) ranged from 13.5 to 19.3 and the indica index in SSR markers (ADi) were from 0.12 to 0.38. The classification of parents by Chi was not completely consistent with that by ADi. The Chi of male parent was more closely related to hybrid traits than that of female parent, as contrasted to ADi. At the same time, the difference between parents (PD) in Chi was more closely related to hybrid traits than that in ADi. The indica-japonica indexes of parents and their difference between parents appeared quadratic relationship to hybrid traits with the critical extremum. The directions of the correlation of indica-japonica indexes of parents and their differences with hybrid yield traits were on the opposition to those with hybrid grain quality traits. Therefore, the female parent should match the male parent moderately in indica-japonica index to obtain the optimum of hybrid traits, high yield as well as good quality. 展开更多
关键词 japonica hybrid rice indica-japonica index chengs index simple sequence repeat YIELD rice quality
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Manipulation of spermatogonial stem cells in livestock species 被引量:7
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作者 Filipp Savvulidi Martin Ptacek +1 位作者 Karina Savvulidi Vargova Ludek Stadnik 《Journal of Animal Science and Biotechnology》 SCIE CAS CSCD 2019年第4期833-850,共18页
We are entering an exciting epoch in livestock biotechnology during which the fundamental approaches(such as transgenesis, spermatozoa cryopreservation and artificial insemination) will be enhanced based on the modern... We are entering an exciting epoch in livestock biotechnology during which the fundamental approaches(such as transgenesis, spermatozoa cryopreservation and artificial insemination) will be enhanced based on the modern understanding of the biology of spermatogonial stem cells(SSCs) combined with the outstanding recent advances in genomic editing technologies and in vitro cell culture systems. The general aim of this review is to outline comprehensively the promising applications of SSC manipulation that could in the nearest future find practical application in livestock breeding. Here, we will focus on 1) the basics of mammalian SSC biology;2) the approaches for SSC isolation and purification;3) the available in vitro systems for the stable expansion of isolated SSCs;4) a discussion of how the manipulation of SSCs can accelerate livestock transgenesis;5) a thorough overview of the techniques of SSC transplantation in livestock species(including the preparation of recipients for SSC transplantation,the ultrasonographic-guided SSC transplantation technique in large farm animals, and the perspectives to improve further the SSC transplantation efficiency), and finally, 6) why SSC transplantation is valuable to extend the techniques of spermatozoa cryopreservation and/or artificial insemination. For situations where no reliable data have yet been obtained for a particular livestock species, we will rely on the data obtained from studies conducted in rodents because the knowledge gained from rodent research is translatable to livestock species to a great extent. On the other hand, we will draw special attention to situations where such translation is not possible. 展开更多
关键词 CRIsPR/Cas9 Genome editing LIVEsTOCK TRANsGENEsIs Long-term culture systems Male GERMLINE sTEM cells Recipient preparation sertoli CELLs spermatogonial sTEM CELLs Ultrasonographic-guided CANNULATION
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基于B/S架构的学术期刊采编系统的设计与研究——以《西南民族大学学报》(自然科学版)采编系统为例 被引量:3
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作者 张阳 《西南民族大学学报(自然科学版)》 CAS 2018年第5期507-511,共5页
高速发展的互联网改变了人们获取信息的方式,人们的阅读习惯也发生着巨大变革,期刊产业传统的采编模式已经不能适应新时代.拥有一个高效、稳定的网络采编系统已成为学术期刊提高核心竞争力的重要途径,因此编辑部办公自动化的实践应用越... 高速发展的互联网改变了人们获取信息的方式,人们的阅读习惯也发生着巨大变革,期刊产业传统的采编模式已经不能适应新时代.拥有一个高效、稳定的网络采编系统已成为学术期刊提高核心竞争力的重要途径,因此编辑部办公自动化的实践应用越来越被期刊编辑部所认可和接受.以《西南民族大学学报》(自然科学版)采用的勤云稿件处理系统为例,探讨学术期刊采编系统的设计、建设和使用情况. 展开更多
关键词 B/s架构 采编系统 学术期刊
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Comparison of Morphological and Genetic Differentiations in Filial Generation of Cross Between Indica and Japonica Rice
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作者 MAO Ting XU Hai Xu Quan Guo Yan-hua ZHU Chun-jie CHEN Kai WANG Jia-yu Xu Zheng-jin 《Rice science》 SCIE 2010年第1期82-86,共5页
A recombinant inbred line (RIL) population of F8 and F9 generations derived from a cross between a typical indica rice (Qishanzhan) and a typical japonica rice (Akihikari) was used to study the difference betwee... A recombinant inbred line (RIL) population of F8 and F9 generations derived from a cross between a typical indica rice (Qishanzhan) and a typical japonica rice (Akihikari) was used to study the difference between morphological differentiation based on phenotype characters and genetic differentiation using indica and japonica specific SSR markers, and to evaluate the relationship between vascular bundle characters and morphological and genetic differentiations. The results showed that the frequency distributions of morphological and genetic differentiations were all inclined to japonica type in the filial generation. The population was more inclined to japonica type based on genetic differentiation than on morphological differentiation. The consistent degrees of classification based on the Cheng’s index, the ratio of large vascular bundle number to small vascular bundle number in panicle neck (RLSVB) and the ratio of large vascular bundle number in the second internode from the top to that in the panicle neck (RLVB) were all about 50% compared with the genetic differentiation, and the consistent degree of the total scores of the Cheng’s index combined with the vascular bundle number ratios was significantly increased to about 80% compared with the genetic differentiation. Therefore, the vascular bundle characters could be used as a helpful supplement for subspecies classification. 展开更多
关键词 rice recombinant inbred line cheng's index vascular bundle characters simple sequence repeat marker subspecies classification method
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