期刊文献+
共找到2,873篇文章
< 1 2 144 >
每页显示 20 50 100
Effect of Suan Zao Ren (Semen Ziziphi Spinosae) Extract on the TXNIP/NLRP3 Pathway in Insomniac Rats
1
作者 Zijing Xu Wei Xiong +2 位作者 Qian Wang Shuyu Li Dexian Jia 《Chinese Medicine and Natural Products》 CAS 2024年第3期126-135,共10页
Objectives This study aimed to investigate the therapeutic effects of Suan Zao Ren(Semen Ziziphi Spinosae,SZS)extract on insomnia induced by p-chlorophenylalanine(PCPA)in rats and its influence on the thioredoxin-inte... Objectives This study aimed to investigate the therapeutic effects of Suan Zao Ren(Semen Ziziphi Spinosae,SZS)extract on insomnia induced by p-chlorophenylalanine(PCPA)in rats and its influence on the thioredoxin-interacting protein(TXNIP)/nucleotide-binding domain Leucine-rich repeat and pyrin domain-containing receptor 3(NLRP3)inflammasome pathway,and to preliminarily explore themechanism by which SZS extract improves insomnia.Methods Fifty male Sprague–Dawley(SD)rats were used,with 8 rats in the blank group and 42 rats in the modeling group.The modeling group was induced by intraperitoneal injection of PCPA at a dose of 500mg·kg^(-1) for six consecutive days,with daily cage exchange.After 6 days,40 successfully modeled rats were randomly divided into five groups:themodel group(equal volume of distilled water),the positive group(0.75 mg·kg^(-1)),and low-,medium-,and high-dose SZS extract groups(1.5,3,and 6 g·kg^(-1),respectively),with 8 rats in each group.Treatments were administered for seven consecutive days.Enzyme-linked immunosorbent assay was used to measure levels of 5-hydroxytryptamine(5-HT)and gamma-aminobutyric acid(GABA)in the rat cerebral cortex.The thiobarbituric acid(TBA)method was used to determine malondialdehyde(MDA)levels,and the hydroxylamine method was used to determine superoxide dismutase(SOD)levels.The 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid)method was used to measure total antioxidant capacity(TAOC)in the cerebral cortex.Pathological changes in the cerebral cortex were observed,and Western blot was used to detect the protein expressions of TXNIP,NLRP3,apoptosis-associated speck-like protein containing a Caspase activation and recruitment domain(CARD),and cysteine–aspartate-specific protease 1(Caspase-1)in the cerebral cortex.Results Compared with the blank group,the model group showed a significantly prolonged sleep latency(p<0.001)and a significantly shortened sleep duration(p<0.001).There were no changes in serum MDA and SOD levels.MDA levels in the cerebral cortex were significantly increased(p<0.001),while SOD and TAOC levels were significantly decreased(p<0.001).The 5-HT level was increased(p<0.05),and the GABA level was significantly decreased(p<0.001).SZS extract improved these conditions to varying degrees.Light microscopy showed no significant changes in cortical neurons but transmission electron microscopy revealed intact mitochondrial structures in the blank group,while the model group showed swollen and unclear mitochondria with reduced organelles.After 7 days of treatment,these conditions improved in the SZS extract groups.Compared with the blank group,the expressions of the four proteins in the model group were increased,and the expressions of these proteins were decreased in the SZS extract groups compared with the model group.Conclusion SZS extract may exert an antioxidant effect to treat insomnia by downregulating the expression of TXNIP/NLRP3 proteins and regulating oxidative stress levels in the cerebral cortex. 展开更多
关键词 INSOMNIA Suan Zao ren TXNIP/NLRP3 oxidative stress sedative and hypnotic
下载PDF
Bai Hu Ren Shen Soup promotes autophagy in the pancreas tissue of diabetic rats by increasing the level of autophagy protein LC3 and decreasing the level of autophagy protein p62
2
作者 Shu-Quan Lv Bao-Chao Pan +7 位作者 Bin Yao Tian Tian Xiu-Hai Su Shu-Fang Zhang Han-Zhou Li Wen-Juan Sun Tian-Yu Zhang Hui Zhang 《Life Research》 2023年第1期17-21,共5页
Objective:To investigate the therapeutic effect of Bai Hu Ren Shen Soup(BHRSS)on type 2 diabetes mellitus(T2DM)rats and explore whether its therapeutic effect is achieved by promoting autophagy in the pancreas tissue ... Objective:To investigate the therapeutic effect of Bai Hu Ren Shen Soup(BHRSS)on type 2 diabetes mellitus(T2DM)rats and explore whether its therapeutic effect is achieved by promoting autophagy in the pancreas tissue of T2DM rats.Methods:Thirty male standard deviation rats were equally divided into normal control group,T2DM group and BHRSS group.Firstly,the therapeutic effect of BHRSS on T2DM was evaluated by biochemical indices in serum and pathological changes in the pancreas tissue of rats in each group after modeling and medication.Then,the levels of microtubule-associated protein 1 light chain 3(LC3)protein and p62 protein in the pancreas tissue of rats in each group after BHRSS intervention were detected by Western blot.Results:BHRSS intervention significantly reduced the levels of blood sugar,liver and kidney function,and other related biochemical indices in the serum of T2DM rats,and effectively improved the pathological changes in the pancreas tissue of T2DM rats.In addition,Western blot results showed that the expression levels of autophagy-related protein LC3 protein in the pancreas tissue of rats were increased,and the expression level of p62 protein was decreased after BHRSS intervention.Conclusion:BHRSS has a clear therapeutic effect on T2DM model rats,which may be related to that increase of autophagy protein LC3 and the decrease of p62 protein level in the pancreas tissue. 展开更多
关键词 Bai Hu ren Shen Soup type 2 diabetes mellitus pancreas tissue AUTOPHAGY
下载PDF
第三代粉末冶金高温合金René104的研究进展 被引量:27
3
作者 贾建 陶宇 +2 位作者 张义文 张莹 刘建涛 《粉末冶金工业》 CAS 北大核心 2007年第3期36-43,共8页
概述了粉末冶金高温合金的发展历程,并简要介绍了几个典型的第三代粉末冶金高温合金,重点讲述了第三代粉末冶金高温合金René104的成形工艺、热处理工艺和经不同热处理得到的典型组织,以及René104的单合金双组织热处理工艺。
关键词 粉末冶金高温合金 涡轮盘 rené104 典型组织 双组织热处理
下载PDF
Lactobacillus salivarius REN菌株的产胺测定与抗生素耐药性评价 被引量:3
4
作者 顾会咏 甘伯中 +3 位作者 任发政 郭慧媛 张卫兵 文鹏程 《甘肃农业大学学报》 CAS CSCD 北大核心 2013年第4期124-130,共7页
Lactobacillus salivarius REN是具有脱基因毒性的益生菌株,试验通过HPLC分析了该菌在脱羧酶培养基中的产胺情况,并利用药敏纸片评价了其抗生素耐药性.结果表明:该菌株可产生组胺、亚精胺和腐胺,合成量分别为68.83、2.11、8.94mg/L,精... Lactobacillus salivarius REN是具有脱基因毒性的益生菌株,试验通过HPLC分析了该菌在脱羧酶培养基中的产胺情况,并利用药敏纸片评价了其抗生素耐药性.结果表明:该菌株可产生组胺、亚精胺和腐胺,合成量分别为68.83、2.11、8.94mg/L,精胺和酪胺未检出.在所测定的15种抗生素中,测试菌株对喹诺酮类的3种抗生素以及糖肽类的2种抗生素均有耐药性;对青霉素G表现出耐药性;对利福平、红霉素表现出中度敏感;对其他7种抗生素均表现出敏感性. 展开更多
关键词 LACTOBACILLUS salivarius ren 体外安全性评价 生物胺 抗生素耐药性
下载PDF
^(188)ReN核配合物制备新方法研究 被引量:3
5
作者 王关全 魏洪源 +5 位作者 罗顺忠 何佳恒 王文进 蒋树斌 熊晓玲 刘国平 《同位素》 CAS 北大核心 2008年第1期25-28,共4页
以丁二酰肼(SDH)作为N给予体,SnCl2作为还原剂,加入188ReO4-,在草酸存在下,制得产率大于95%的188Re≡N核中间体化合物。并在此基础上,制得了放化纯度大于90%的新型配合物188ReN-NEPT-DD(2,2,9,9-四甲基-4,7-二氮-4-乙撑哌啶-1,10-二硫癸... 以丁二酰肼(SDH)作为N给予体,SnCl2作为还原剂,加入188ReO4-,在草酸存在下,制得产率大于95%的188Re≡N核中间体化合物。并在此基础上,制得了放化纯度大于90%的新型配合物188ReN-NEPT-DD(2,2,9,9-四甲基-4,7-二氮-4-乙撑哌啶-1,10-二硫癸烷)。该配合物具有较好的体外稳定性,室温放置48h后,放化纯度仍>90%。 展开更多
关键词 ^188ren NEPTDD 制备
下载PDF
DD3合金与Renē95合金摩擦焊接界面摩擦学性能分析 被引量:4
6
作者 杜随更 王庆 傅莉 《焊接学报》 EI CAS CSCD 北大核心 2002年第4期27-30,共4页
摩擦系数是摩擦焊接研究中重要的能量参量与摩擦学参量。DD3合金和Ren叆95合金分别是先进航空发动机整体叶盘制造中所用的单晶叶片材料和粉末冶金涡轮盘材料。为研究这两种材料的摩擦焊接性 ,作者在理论推导摩擦焊合区力学参量的基础上 ... 摩擦系数是摩擦焊接研究中重要的能量参量与摩擦学参量。DD3合金和Ren叆95合金分别是先进航空发动机整体叶盘制造中所用的单晶叶片材料和粉末冶金涡轮盘材料。为研究这两种材料的摩擦焊接性 ,作者在理论推导摩擦焊合区力学参量的基础上 ,采用计算机测控系统实时测量了DD3和Ren叆95连续驱动摩擦焊接过程中的摩擦界面温度、摩擦扭矩与轴向压力。其中 ,摩擦界面温度采用半自然热电偶测量。通过试验数据回归分析 ,分别建立了初始摩擦阶段摩擦系数公式f1=1.76 8-0 .465(T -2 73) 0 .0 0 5、准稳定摩擦阶段的流动应力公式σ =186 .2 3exp 16 7.15 6T - 2 73和等效摩擦系数公式 f2 =- 9.2 93+0 .0 16T - 6 .918× 10 -6T 2 。为进行整体叶盘摩擦焊接过程的产热机制分析与数值模拟奠定了试验基础。 展开更多
关键词 DD3合金 renē95合金 整体叶盘 摩擦焊 摩擦系数 流动应力 高温合金
下载PDF
电渣重熔连续定向凝固René88DT镍基合金锭工艺参数的计算 被引量:5
7
作者 陈希春 付锐 +1 位作者 冯涤 任昊 《特殊钢》 北大核心 2011年第5期31-34,共4页
René88DT镍基合金(%:0.02~0.05C、15.5~16.5Cr、3.8~4.2Mo、≤0.20Ta、12.5~13.5Co、0.6~1.0Nb、0.025~0.050Zr、3.5~3.9Ti、2.0~2.4Al、0.006~0.015B、3.8~4.2W、0.005~0.010Ce)母合金棒由200 kg真空感应炉熔炼,并按... René88DT镍基合金(%:0.02~0.05C、15.5~16.5Cr、3.8~4.2Mo、≤0.20Ta、12.5~13.5Co、0.6~1.0Nb、0.025~0.050Zr、3.5~3.9Ti、2.0~2.4Al、0.006~0.015B、3.8~4.2W、0.005~0.010Ce)母合金棒由200 kg真空感应炉熔炼,并按照凝固组织显微结构要求,通过控制铸锭凝固的二次枝晶间距和金属熔池形状及深度来确定重熔时熔化的速度,再通过热平衡计算得到相关的熔炼参数,由500 kg气氛保护抽锭式电渣重熔炉按连续定向凝固工艺熔炼出Φ160 mm×220 mm René88DT合金锭结果表明,计算重熔总时间与实际时间的误差仅为4.5%,熔池浅平,凝固组织均匀细小,获得了全〈100〉方向的柱状晶组织,二次枝晶间距为60~80μm。 展开更多
关键词 电渣重熔连续定向凝固 rené88DT镍基合金 凝固组织控制 工艺参数
下载PDF
疲劳保载时间与固溶处理对PM René95合金高温裂纹扩展速率的影响 被引量:2
8
作者 李晓 董建新 +4 位作者 张丽娜 张麦仓 胡尧和 谢锡善 国为民 《金属学报》 SCIE EI CAS CSCD 北大核心 2001年第10期1059-1063,共5页
经不同固溶时效处理的 PM Rene95合金于 650℃分别在蠕变、保载 5和 90 s疲劳载荷条件下进行了裂纹扩展速率实验.结果表明,相同热处理制度下,疲劳保载时间越长,裂纹扩展速率越高;相同载荷条件下,增加一次高温固溶... 经不同固溶时效处理的 PM Rene95合金于 650℃分别在蠕变、保载 5和 90 s疲劳载荷条件下进行了裂纹扩展速率实验.结果表明,相同热处理制度下,疲劳保载时间越长,裂纹扩展速率越高;相同载荷条件下,增加一次高温固溶并缓冷,有利于降低合金的裂纹扩展速率,且固溶温度越高裂纹扩展速率越低;1200℃一次固溶缓冷并于1160℃二次固溶热处理比1140℃一次固溶的裂纹扩展速率约降低一个数量级;基体晶粒尺寸适当加大,强化相粒子γc数量增加、形状趋于田字形,有利于降低裂纹扩展速率. 展开更多
关键词 rené95粉末高温合金 裂纹扩展速率 热处理 固溶处理 疲劳保载时间
下载PDF
Sjgren综合征共病抑郁症一例
9
作者 刘岩 翟金国 《精神医学杂志》 2015年第3期221-222,共2页
1病例资料 患者女,47岁,已婚,农民。因“口干、唇舌干裂,无唾液4年,情感低落2个月”就诊。 患者于4年前开始感觉口干,唾液分泌减少,逐渐感到唇舌干裂,眼睛发干,吃干食时难以下咽,必须喝水送服。症状逐渐加重,最近1年来严重影响患者进... 1病例资料 患者女,47岁,已婚,农民。因“口干、唇舌干裂,无唾液4年,情感低落2个月”就诊。 患者于4年前开始感觉口干,唾液分泌减少,逐渐感到唇舌干裂,眼睛发干,吃干食时难以下咽,必须喝水送服。症状逐渐加重,最近1年来严重影响患者进食和日常生活,进食必须喝水送服,否则就无法下咽。 展开更多
关键词 ren综合征 抑郁症 共病 唾液分泌 病例资料 眼睛发干 患者 干裂
下载PDF
REN命令的完善
10
作者 王坚强 吴国芳 《电脑编程技巧与维护》 1996年第2期6-7,共2页
DOS的REN命令可对文件改名,但不能对子目录改名,要将子目录改名必须借助一些工具软件才能完成,这给用户的使用带来了不便。DOS的系统调用提供了给子目录或文件改名的功能,Turbo C和Broland C也提供了类似的函数rename,但此函数中文件名... DOS的REN命令可对文件改名,但不能对子目录改名,要将子目录改名必须借助一些工具软件才能完成,这给用户的使用带来了不便。DOS的系统调用提供了给子目录或文件改名的功能,Turbo C和Broland C也提供了类似的函数rename,但此函数中文件名或子目录名中不含有通配符“*”或“?”,即不能对满足一定的特征的文件或子目录改名,因而有必要编制一个程序来完善REN命令。 展开更多
关键词 DOS 操作系统 ren命令
下载PDF
Williams-Beuren综合征的发生机制和研究进展
11
作者 袁海昕 黄尚志 《医学研究通讯》 2005年第5期54-57,共4页
Williams-Beuren 综合征(WBS)是由于7q11.23邻近基因杂合性丢失所致的部分单体性综合征。临床表型包括心血管疾病、特殊面容、神经行为异常和一过性婴儿期高钙血症。在新生儿中的发病率为1/7500~1/25000,多数为散发,部分为常染色体显... Williams-Beuren 综合征(WBS)是由于7q11.23邻近基因杂合性丢失所致的部分单体性综合征。临床表型包括心血管疾病、特殊面容、神经行为异常和一过性婴儿期高钙血症。在新生儿中的发病率为1/7500~1/25000,多数为散发,部分为常染色体显性遗传。WBS 的发生机制为染色体间或染色体内低拷贝重复序列的重排。其缺失区域包含20多个基因,其中ELN、LIMK、CYLN2和 TFII-I 等基因的功能已经明确。关于基因型和表型的关系还需要进一步研究。 展开更多
关键词 ren综合征 发生机制 常染色体显性遗传 基因杂合性丢失 神经行为异常 心血管疾病 性综合征 部分单体 临床表型 特殊面容 高钙血症 重复序列 婴儿期 一过性 发病率 新生儿 低拷贝 WBS 步研究 基因型
下载PDF
嵌入式系统PID参数REN自整定法初探
12
作者 朱其祥 《福建电脑》 2012年第11期156-157,共2页
本文从理论上探讨了一种适用于单片计算机的PID自整定方法。该方法容易利用嵌入式系统的软件和硬件实现,在工业现场的过程控制中可以得到广泛使用。
关键词 PID算法 ren 自整定 嵌入式系统
下载PDF
常染色体显性遗传肾小管间质病中UMOD,REN,HNF1B基因筛查及功能研究 被引量:1
13
作者 宫坤婧 王雅琴 +2 位作者 夏敏 刘颖 陈育青 《中国血液净化》 2017年第6期413-419,共7页
目的在我们收集的中国人常染色体显性遗传小管间质性肾病(autosomal dominant tubulointerstitial kidney disease,ADTKD)的队列中,进行该病致病基因UMOD/REN/HNF1B的突变筛查,同时对新发现的UMOD基因突变进行功能研究,建立ADTKD的遗传... 目的在我们收集的中国人常染色体显性遗传小管间质性肾病(autosomal dominant tubulointerstitial kidney disease,ADTKD)的队列中,进行该病致病基因UMOD/REN/HNF1B的突变筛查,同时对新发现的UMOD基因突变进行功能研究,建立ADTKD的遗传诊断基本流程。方法根据KDIGO指南纳入了44例ADTKD疑诊患者及家系,收集临床资料。首先使用一代测序的方法检测UMOD,REN,HNF1B的致病点突变;然后应用多重连接探针扩增技术(multiple ligation-dependent probe amplification,MLPA)进行HNF1B拷贝数变异检测。利用UMOD野生型质定点突变的方法构建突变质粒,转染HEK293细胞,Western Blot方法检测成熟型尿调蛋白表达量的变化。结果 44例先证者中共检出11例突变,10例位于UMOD基因,1例位于HNF1B基因。UMOD基因突变中,3例为国际上尚未报导的新突变(p.Cys35Tyr,p.Asn38Ile p.Cys287Phe)。在该人群中,REN基因点突变和HNF1B基因的拷贝数变异均未检出。将44例先证者分为UMOD突变和未突变组,对比两组临床资料,但两组没有显著性差异。突变质粒转染HEK293细胞表达的成熟型尿调蛋白明显减少(F=14.241,P<0.001)。结论本研究中有25%的患者检测出基因突变,以UMOD基因为主,且均为点突变,点突变是ADTKD的主要致病原因。一代测序是检测该疾病直接有效的方法。临床表现不能作为疾病诊断的标准,应进行一系列的致病基因的监测,并通过初步的功能检测对突变的致病性进行验证。 展开更多
关键词 常染色体显性遗传小管间质性肾病 尿调蛋白 HNF1β ren 基因检测
下载PDF
A Comparative Study on Different Translations of“Ren(仁)”in The Ana Analects of Confucius in Chinese and Western Cultures
14
作者 宋雪琪 孙志祥 《海外英语》 2018年第7期172-174,共3页
The concept of"ren"(仁) in The Analects of Confucius is at the core of Confucianism and has acquired rich connotations and a dis-tinguished position. Enormous differences in cultural background between the E... The concept of"ren"(仁) in The Analects of Confucius is at the core of Confucianism and has acquired rich connotations and a dis-tinguished position. Enormous differences in cultural background between the East and the West, however, result in varied under-standings of"ren". In this paper, a detailed comparison between Ku Hung-ming's translation of The Analects of Confucius andthat of James Legge's is made to analyze the the impact of different cultural background on the understanding and translation of"ren"in the relevant contexts. It is concluded that cultural difference exerts a great influence on the English versions of The Ana-lects of Confucius. 展开更多
关键词 The Analects of Confucius English version of The Analects of Confucius cultural differences English translation of "ren"
下载PDF
Zinc phosphating of 6061-Al alloy using REN as additive 被引量:5
15
作者 张圣麟 张晓麟 张明明 《Journal of Rare Earths》 SCIE EI CAS CSCD 2008年第1期110-114,共5页
Zinc phosphate coating formed on 6061-A1 alloy was studied with the help of electrochemical measurements, Fourier Transform Infrared (FTIR), and Scanning Electron Microscopy (SEM), after dipping it in phosphating ... Zinc phosphate coating formed on 6061-A1 alloy was studied with the help of electrochemical measurements, Fourier Transform Infrared (FTIR), and Scanning Electron Microscopy (SEM), after dipping it in phosphating solutions containing different concentrations of Rare Earth Nitrate (REN). REN, which acted as an accelerator in the phosphating solution, could catalyze the surface reaction and accelerate the phosphating process. REN mainly enabled the P in the phosphate coating to exist in the form of PO4^3- and promoted the hydrolysis of phosphatic acid in a liquid layer at the cathodes. This resulted in the evolution of H2 at the cathodes, which increased the local pH value and in turn drove the precipitation of the phosphate coating. Additionally, REN was adsorbed on the surface of the aluminum substrates to form a gel during the phosphating process. These gel particles were good crystal seeds, which helped to form phosphate crystal nuclei and possess the function of a nucleation agent that could decrease the phosphate crystal size. The corrosion resistance of the formed zinc phosphate coatings was improved. 展开更多
关键词 Rare Earth Nitrate ren phosphate coating aluminum alloy ACCELERATOR nucleation agent
下载PDF
ONE HUNDRED CASES OF CHRONIC PELVIC INFLAMMATION TREATED WITH ACUPOINTS OF CHONG AND REN CHANNELS 被引量:1
16
作者 田丽颖 《World Journal of Acupuncture-Moxibustion》 1999年第4期51-53,共3页
The auther has treated 100 cases of chronic pelvic inflammation with needling the acupoints of Chong and Ren channels since 1996. Of them, 44 % cases were cured, 33 % markedly effective and 20 % improved. The total ef... The auther has treated 100 cases of chronic pelvic inflammation with needling the acupoints of Chong and Ren channels since 1996. Of them, 44 % cases were cured, 33 % markedly effective and 20 % improved. The total effective rate was 97%. Acupoints of Ren channel selected: Zhongji (CV 3), Guanyuan(CV 4), Qihai(CV 6) and Yinjiao(CV 7); Crossing acupoints of Chong channel selected: Qixue(KI l3), Siman(KI 14) and Zhongzhu(KI 15). Filiform needles of No. 30, 1. 5 cun were adopted to puncture the above acupoints with the uniform reinforcing-reducing method, and the needles were retained for 30 minutes. At the same time, the moxibustion was applied to the place of retaining needles until the skin flushed. 展开更多
关键词 CHONG and ren CHANNELS Chonic PELVIC INFLAMMATION Acupuncture and MOXIBUSTION
下载PDF
On Mencius' Key Philosophical Term-Ren C-E Translation in the Perspective of Reception Theory
17
作者 赖兰兰 郦伟 陈小莹 《大学英语教学与研究》 2018年第4期31-36,共6页
With the guidance of reception theory, based on the corpus of James Legge, the LCC and D. C. Lau's versions of Mencius, a comparative study will be conducted on the key philosophical term: Ren. After comparison, r... With the guidance of reception theory, based on the corpus of James Legge, the LCC and D. C. Lau's versions of Mencius, a comparative study will be conducted on the key philosophical term: Ren. After comparison, reasons for the differences will be stated. Targeting at missionaries, James adopted the 19 century old English and strived for faithfulness. Lau's translation work is of high academic value and receives good comments popularly in western sinology circle, being considered as the exemplary work for translating Chinese classics into English. Zhao et al. translated Mencius for modern readers, who might have acquired more knowledge of China and want to learn something about Mencius. Quantitative analysis shows that Ren appears 157 times in Mencius, and"benevolent/benevolence"gains a dominant position in these three versions. 展开更多
关键词 MENCIUS English versions Reception Theory ren
下载PDF
Primary Study of Novel Method for Determination of Saponin in Ziziphi Spinosae Semen (<i>Suan-Zao-Ren</i>) by Digitally Scanning the Photo of the HPTLC Image without Configuration of TLC Scanner Facility 被引量:6
18
作者 Longgang Guo Shuai Sun +3 位作者 He Li Ruiyin Wang Xinjun Xu Peishan Xie 《Chinese Medicine》 2014年第4期211-217,共7页
Conventional quantity determination of Chinese herbal medicines by High-Performance Thin-Layer Chromatography (HPTLC) must be carried out on a TLC scanner for measuring the marker component on the HPTLC plate. General... Conventional quantity determination of Chinese herbal medicines by High-Performance Thin-Layer Chromatography (HPTLC) must be carried out on a TLC scanner for measuring the marker component on the HPTLC plate. Generally the HPTLC image of the herbal drug always takes the photograph as the permanent visual document. Considering the photo of the HPTLC image preserving all the visual quality-related parameters, there might be an alternative cost/effective approach worth studying. It would be presumably applicable to use the exclusively developed software as a virtual scanner instead of the TLC Scanner instrument to do digital scanning, integrating and calculating target components in the photo of the HPTLC image. It means digitally scanning the photo of the HPTLC image solely with software does the same thing as the instrumental scanner does. Based on this protocol, we primarily conducted the assay of the contents of the major saponins, jujuboside a and jujuboside b, in Ziziphi Spinosae Semen (Suan-Zao-Ren). Using home-developed software “digiscan” for acquiring the raw data and integrating the peaks area of the target components with “Origin Pro”, the contents of jujuboside a and jujuboside b can then be calculated respectively. The primary investigated experiment results were well compatible with official HPLC-ELSD method in Chinese Pharmacopoeia. The methodology validation and comparative analysis with HPLC confirmed that the unprecedented method is acceptable. The advantage of the recommended approach is far more simple, flexible and cost/effective than the conventional method, and it can be done at anytime and anywhere once only if the high quality HPTLC image photo is available. There would be a bright perspective for application to other herbal medicines. And the one-stop software for merging digital scanning, integration and calculation together is in progress. 展开更多
关键词 HPTLC IMAGE PHOTO Digital-Determination Ziziphi Spinosae SEMEN (Suan-Zao-ren) Jujuboside a and b
下载PDF
阳江核电站REN核取样系统电磁流量计改造 被引量:2
19
作者 张晨东 《仪器仪表用户》 2018年第11期89-93,共5页
阳江核电站REN核取样系统现有流量测量采用的是法国福尔赫曼生产的涡轮流量计,该类型流量计在运行过程中故障频发,耗费大量人力物力,影响REN系统设备的安全稳定运行。本文从原理上对涡轮流量计故障原因进行分析,确认涡轮流量计不适用于... 阳江核电站REN核取样系统现有流量测量采用的是法国福尔赫曼生产的涡轮流量计,该类型流量计在运行过程中故障频发,耗费大量人力物力,影响REN系统设备的安全稳定运行。本文从原理上对涡轮流量计故障原因进行分析,确认涡轮流量计不适用于现场工况,需要进行产品换型改造。从改造换型所用电磁流量计的特性出发,阐述选择电磁流量计作为换型产品的原因,并通过现场反馈和持续改进,确认所选电磁流量计适用于REN核取样系统工况。 展开更多
关键词 阳江核电站 ren核取样系统 涡轮流量计 电磁流量计 改造
下载PDF
A Comparative Study of the Translated Versions of Song You Renby Ezra Pound and Qiu Kean—From the Perspective of Functional Grammar
20
作者 王静 《海外英语》 2013年第18期195-197,共3页
As one genre of literature,poetry is the elite in both Chinese language and its culture. With its unique characteristics of metrical and form regulations and the beauty of its simplicity and conciseness,Chinese Tang p... As one genre of literature,poetry is the elite in both Chinese language and its culture. With its unique characteristics of metrical and form regulations and the beauty of its simplicity and conciseness,Chinese Tang poetry is one of the brightest pearls in the world literature treasury.Translating as a purposeful activity was originated from the functionalist approaches to translation.From the perspective of functional grammar,this thesis attempts to study two translation versions of Song You Ren written by Li Bai. More emphasis has been put on the similarities and differentiations of the textual analysis. Through the analysis and compari son between the two translation versions,it is found that functional grammar is not only helpful to have a deep understanding of the discourse,but will also throw some light upon the practice of translation. 展开更多
关键词 Systemic-Functional GRAMMAR SONG YOU ren THEMATIC
下载PDF
上一页 1 2 144 下一页 到第
使用帮助 返回顶部