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用正交试验法确定 VMUC100 超精研机床参数
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作者 薛玉泉 《机械工程师》 北大核心 1997年第5期39-40,共2页
用正交试验法确定VMUC100超精研机床参数哈尔滨轴承股份有限公司成品七分厂(150030)薛玉泉VMUC100超精研机床是八十年代初国产的。用于圆锥滚子及圆柱滚子轴承内、外套圈滚道精研工序,加工直径Φ40~Φ100... 用正交试验法确定VMUC100超精研机床参数哈尔滨轴承股份有限公司成品七分厂(150030)薛玉泉VMUC100超精研机床是八十年代初国产的。用于圆锥滚子及圆柱滚子轴承内、外套圈滚道精研工序,加工直径Φ40~Φ100mm。它是在良好的润条件下工件以最... 展开更多
关键词 研床 超精 参数 正交试验法
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基于“治未病”探讨证候类中药新药的临床研究 被引量:6
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作者 吴文斌 安娜 +2 位作者 裴小静 杨娜 唐健元 《中药药理与临床》 CSCD 北大核心 2017年第3期209-211,共3页
证候类中药新药的开发引起业界的广泛关注,但其研究却始终未能突破瓶颈。本文从研究模式、临床定位、证候选择、疗效评价等方面探讨证候类中药新药的临床研究,并提出了基于"治未病"的证候类中药新药的临床研究思路。
关键词 证候类中药 治未病 究思路
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三自由度超精研振荡头的动态设计 被引量:1
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作者 张景勘 李德滋 +5 位作者 王文红 蒋成昆 汪仁友 黄恭祝 陈朝光 韦兆汉 《磨床与磨削》 北大核心 1998年第2期25-28,共4页
关键词 超精研床 振荡头 动态设计 三自由度
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VMGC60精研机的PC群控
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作者 陆武魁 《轴承》 北大核心 1996年第11期20-22,共3页
VMGC60精研机的PC群控郴州轴承厂(423000)陆武魁叙词超精加工机,电气控制VMGC60精研机有独立的两个工作头,机械运动简单,易于修理。但由于是早期制造的产品,其控制方式较为落后且弊端较多,电气故障率高,影... VMGC60精研机的PC群控郴州轴承厂(423000)陆武魁叙词超精加工机,电气控制VMGC60精研机有独立的两个工作头,机械运动简单,易于修理。但由于是早期制造的产品,其控制方式较为落后且弊端较多,电气故障率高,影响其效益的发挥,弃之不用又甚感可惜... 展开更多
关键词 计算机控制 研床 PC机
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超精研机滚棒的改造
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作者 徐文华 《磨床与磨削》 北大核心 1995年第4期71-71,11,共2页
关键词 研床 超精 滚棒
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用PC机改造VMGC60超精研机
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作者 严循东 《设备管理与维修》 1989年第12期22-24,共3页
一、PC机简介 PC机结构简单、功能完备、可靠性高,用来改造旧设备极其方便。PC机具有实现逻辑电路的功能,程序由编程器写入PC机后,PC机就可以按预定的程序动作,控制设备。二、VMGC60超精研机的电气改装该机床是轴承行业应用较广泛的一... 一、PC机简介 PC机结构简单、功能完备、可靠性高,用来改造旧设备极其方便。PC机具有实现逻辑电路的功能,程序由编程器写入PC机后,PC机就可以按预定的程序动作,控制设备。二、VMGC60超精研机的电气改装该机床是轴承行业应用较广泛的一种设备,调整方便,生产效率较高。 展开更多
关键词 研床 改造 微机 超精
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腹部手术后形成粘连性肠梗阻手术指征的影响因素研究 被引量:1
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作者 李闯 陈小红 +2 位作者 刘昕 程书榜 高旭光 《大医生》 2023年第17期8-11,共4页
目的探讨腹部手术后形成粘连性肠梗阻手术指征的影响因素。方法回顾性分析2020年6月至2022年12月深圳市龙华区人民医院收治的105例腹部手术后出现粘连性肠梗阻患者的临床资料,根据是否行粘连性肠梗阻手术分为手术组(30例)和非手术组(75... 目的探讨腹部手术后形成粘连性肠梗阻手术指征的影响因素。方法回顾性分析2020年6月至2022年12月深圳市龙华区人民医院收治的105例腹部手术后出现粘连性肠梗阻患者的临床资料,根据是否行粘连性肠梗阻手术分为手术组(30例)和非手术组(75例)。比较两组患者临床指标(肠粘连史、是否有腹痛加重或不缓解、是否有严重腹胀、是否发热、是否触及肿大肠襻、是否合并腹膜炎、是否有肠鸣音减弱、是否有腹腔积液及是否贫血)及炎症因子[白细胞计数(WBC)、超敏C反应蛋白(hs-CRP)]水平,分析影响腹部手术后形成粘连性肠梗阻手术指征的独立危险因素。结果手术组患者有肠道粘连史、有腹痛加重或不缓解、触及肿大肠襻、合并腹膜炎、有肠鸣音减弱及有腹腔积液占比高于非手术组,且WBC、hs-CRP水平高于非手术组(P<0.05)。多因素Logistic回归分析显示,有肠粘连史、合并腹膜炎、有腹腔积液及WBC、hs-CRP水平升高是行粘连性肠梗阻手术的独立危险因素(P<0.05)。结论肠粘连史、有腹膜炎、有腹腔积液及WBC、hs-CRP水平升高为腹腔术后粘连性肠梗阻患者手术指征的独立危险因素,临床应加强患者病史评估及炎症指标的监测,尽早明确粘连性肠梗阻患者是否需要进行手术。 展开更多
关键词 腹部手术 粘连性肠梗阻 手术指征 影响因素
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NIR-II biomedical optics:evolution and prospects from technological advances towards clinical translation
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作者 LI Yi-Xuan XIA Qi-Ming +9 位作者 CHEN Guo-Qiao ZHANG Yi-Yin LIU Xiao-Long Adam Sofia Abdulkadir JIN Sheng-Xi ZHOU Feng-Bin LIN Deng-Feng QIAN Jun FAN Xiao-Xiao LIN Hui 《红外与毫米波学报》 北大核心 2025年第5期801-818,共18页
The second near-infrared window(NIR-II,900-1880 nm)overcomes critical limitations of visible(360-760 nm)and NIR-I(760-900 nm)imaging—including restricted penetration depth,low signal-to-back⁃ground ratio,and tissue a... The second near-infrared window(NIR-II,900-1880 nm)overcomes critical limitations of visible(360-760 nm)and NIR-I(760-900 nm)imaging—including restricted penetration depth,low signal-to-back⁃ground ratio,and tissue autofluorescence—establishing its pivotal role for in vivo deep-tissue bioimaging.With exponential growth in NIR-II photodiagnosis and phototherapy research over the past decade,bibliometric analy⁃sis is essential to map the evolving landscape and guide strategic priorities.We systematically analyzed 2,491 NIR-II-related publications(2009-2023)from the Web of Science Core Collection,employing scientometric tools for distinct analytical purposes:(a)VOSviewer,SCImago Graphica,and Gephi for co-authorship and co-occur⁃rence network mapping;(b)the R bibliometrix package for tracking field evolution and identifying high-impact publications/journals.The search retrieved 2491 studies from 359 journals originating from 54 countries.The country with the most published articles is China.Chinese institutions drive>60%of publications,with Stanford University(USA)and Nanyang Technological University(Singapore)ranked as the top two institutions by re⁃search quality.International cooperation is becoming increasingly frequent.Fan Quli,Tang Benzhong and Dai Hongjie are the top 3 productive authors in this field.Keyword evolution identifies"photodynamic therapy"and"immunotherapy"as pivotal future directions.We summarize the most cited literatures and NIR-II imaging clini⁃cal trials.This study delineates the NIR-II research trajectory,highlighting China's leadership,intensifying glob⁃al collaboration,and interdisciplinary convergence.Future efforts should prioritize the novel NIR-II probe devel⁃opment for NIR-II imaging and clinical translation of photodynamic/immunotherapy combinational platforms. 展开更多
关键词 second near-infrared window(NIR-II) biomedical optics clinical translation research trend
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Research insights and clinical opportunities of functional organoid-based platforms
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作者 Yueyu Huang Wenhui Shen +5 位作者 Kehan Li Yutian Zhang Qiaoli Lv Changchun Wang Weimin Mao An Zhao 《Bio-Design and Manufacturing》 2025年第6期1063-1079,I0044,共18页
Stem cell-or tissue-derived three-dimensional organ-like formations,known as organoids,are emerging as effective tools in biomedicine.Since they may be useful in developing customized therapeutic solutions and efficie... Stem cell-or tissue-derived three-dimensional organ-like formations,known as organoids,are emerging as effective tools in biomedicine.Since they may be useful in developing customized therapeutic solutions and efficient drug screening protocols,organoids can deepen our understanding of novel disease mechanisms.In doing so,they can facilitate advancements in drug discovery platforms,pharmacological safety,and clinical trials.This review explores various biomedical applications of organoids,including drug development and disease modeling,and highlights specific tools and analytical techniques that can be employed to investigate organoids and their microenvironments.Finally,we review recent clinical trials and patents related to organoids that show great promise for future clinical translation. 展开更多
关键词 ORGANOIDS In vitro research models Clinical trials Functional and engineered design
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CLINICAL RESEARCH OF JIAJI(夹脊EX-B2) IN TREATMENT OF SPASTIC CEREBRAL PALSY WITH ACUPUNCTURE 被引量:2
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作者 周君 刘红英 +2 位作者 邓晖 张翠莲 陈晓红 《World Journal of Acupuncture-Moxibustion》 2007年第4期22-26,共5页
Objective To observe the clinical therapeutic effects of Jiájǐ(夹脊EX-B2) on spastic cerebral palsy (SOP) with acupuncture.Methods 62 cases of SOP were randomized into two groups,named treat- ment group with... Objective To observe the clinical therapeutic effects of Jiájǐ(夹脊EX-B2) on spastic cerebral palsy (SOP) with acupuncture.Methods 62 cases of SOP were randomized into two groups,named treat- ment group with acupuncture on Jiájǐ(夹脊EX-B2),and control group with sham-acupuncture.The treatment was applied once a day,10 times made a course,totally 6 courses were required.Modified Ashworth scale and FIM grade were used to observe and assess the results of treatment.Results The total effective rate was 84.4 % in treatment group and was 63.3 % in control group,indicating significant difference (P〈0.01). Conclusion Acupuncture on Jiájǐ(夹脊EX-B2) achieves good clinical therapeutic effects on SCP. 展开更多
关键词 Cerebral palsy Jiájǐ(夹脊EX-B2) ACUPUNCTURE
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CATGUT EMBEDDING FOR TREATMENT OF SIMPLE OBESITY COMPLICATED WITH ABNORMAL BLOOD FAT 被引量:4
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作者 卢文 朱礼刚 +2 位作者 苏清伦 房忠女 周源 《World Journal of Acupuncture-Moxibustion》 2008年第3期1-8,共8页
Objective To compare the therapeutic effect of catgut embedding combined with diet plus exercise with that of diet plus exercise in treating simple obesity complicated with abnormal blood fat. Methods A prescription o... Objective To compare the therapeutic effect of catgut embedding combined with diet plus exercise with that of diet plus exercise in treating simple obesity complicated with abnormal blood fat. Methods A prescription of diet plus exercise was given to the patients in a control group, and catgut embedding was added to the prescription in a treatment group. It was given once every 15 days for the 1st three treatments, and once every month for the 2^nd three treatments. Six treatments constituted a therapeutic course. Body weight and blood fat were measured before and half a year since treatment. Results After treatment, BMI, TO, TG and LDL were very significantly improved in the treatment group (P〈0.01), and BMI and TG were very significantly (P〈0.01) and TO and LDL were significantly (P〈0.05) improved in the control group. HDL was not obviously improved in both groups (P〉0.05). The improvement of TO, TG and LDL in the treatment group was significantly more than that in the control group (P〈0.01), but no difference in improvement of BMI and HDL was found between the two groups (P〉0.05). Conclusion The therapy of diet plus exercise was effective in body weight reduction and lowering blood fat in patients with simple obesity complicated with abnormal blood fat, and catgut embedding used in combination was even better in lowering blood fat. 展开更多
关键词 Catgut Embedding Simple Obesity Abnormal Blood Fat
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ISSUES AND MEASURES ON ASSISTED REPRODUCTION BY ACUPUNCTURE ABROAD 被引量:2
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作者 彭艳 丛晶 +1 位作者 侯丽辉 吴效科 《World Journal of Acupuncture-Moxibustion》 2007年第2期31-34,共4页
As the application of acupuncture has been increased year by year in the field of overseas reproduction, it has become crucial to give a scientific and objective evaluation of the safety and efficacy of acupuncture in... As the application of acupuncture has been increased year by year in the field of overseas reproduction, it has become crucial to give a scientific and objective evaluation of the safety and efficacy of acupuncture in the field of assisted reproduction, which attaches great importance to the sustainable development of acupuncture in the field of reproduction. This article aims to introduce the current situation of overseas clinical study in the field of assisted reproduction, analyze the existing issues profoundly and put forward measures to solve them, in order to enhance the level of international clinical study of acupuncture. 展开更多
关键词 Acupuncture Assisted Reproduction Clinical study
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Clinical observation of regulating the heart and calming down the mind method of acupuncture for premature heartbeats 被引量:8
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作者 王锐 张宁宁 +5 位作者 谭奇纹 杨佃会 管琳 杨振杰 郭丽 崔华峰 《World Journal of Acupuncture-Moxibustion》 2012年第2期34-37,共4页
Objective To probe into the effective method of acupuncture for premature heartbeats. Methods Sixty-four cases of premature heartbeats were randomly divided into an observation group (n=33) and a control group (n=3... Objective To probe into the effective method of acupuncture for premature heartbeats. Methods Sixty-four cases of premature heartbeats were randomly divided into an observation group (n=33) and a control group (n=31). In the observation group, acupuncture was applied in light of regulating the heart and calming down the mind. The acupoints were Língtái (灵台 GV 10), Shéndào (神道 GV 11), Nèiguān (内关 PC 6) and Bǎihuì (百会 GV 20). In the control group, acupuncture was applied at Nèiguān (内关 PC 6). The dynamic electrocardiogram (DCG) was measured before and after treatment in each group separately. Results The total effective rate was 63.6% (21/33) in the observation group and was 38.7% (12/31) in the control group, indicating the statistically significant difference in comparison (P〈0.05). Conclusion Acupuncture in light of regulating the heart and calming down the mind is the good approach for the treatment of premature heartbeats. 展开更多
关键词 cardiac complexes premature ACUPUNCTURE clinical research
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CLINICAL RESEARCH ON TREATMENT OF DYSPHAGIA WITH NECK ACUPUNCTURE 被引量:2
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作者 王凤艳 孙萍 +3 位作者 王永贵 高维滨 李晓宁 刘滨 《World Journal of Acupuncture-Moxibustion》 2007年第2期16-21,共6页
Objective To observe the clinical therapeutic effects on dysphagia induced by pseudobulbar palsy chiefly treated with neck acupuncture and probe into the mechanism on the effects. Methods The 86 cases that had been di... Objective To observe the clinical therapeutic effects on dysphagia induced by pseudobulbar palsy chiefly treated with neck acupuncture and probe into the mechanism on the effects. Methods The 86 cases that had been diagnosed definitely were randomized into two groups, the treatment group and control group. The treatment group (acupuncture+western medication) (44 cases) was treated with acupuncture on Fēngfǔ(风府 GV16), Fēngchí (风池GB20), Gòngxě(供血 Extra), Yīmíng (翳明 EX-HN14), Zhìqiāng (治呛 Extra), Tūnyàn (吞咽 Extra), Fāyīn (发音 Extra), Liánquán (廉泉CV23), etc., and the intravenous injection with Shuxuetong (疏血通) 6- 10 mL and 0.9%, NaCl 250 mL. The control group (western medication) (42 cases) was treated with the intravenous injection with Shuxuetong (疏血通) 6- 10 mL and 0.9%, NaCl 250 mL. Results The total effective rate was 97.73 % and 80.95 % in the treatment group and control group respectively, indicating very significant difference (P 〈 0.01 ). Conclusion The therapeutic effects mainly with neck acupuncture are better on dysphagia induced by psudalbulbar palsy, which is superior to that with simple western medication and worth to be promoted. Concerning to the mechanism on the therapeutic results, it is viewed that acupuncture on neck points improves the excitability of cerebral neurocytes, resuscitates the reversible neurocytes or awakens the inhibited neurocytes. 展开更多
关键词 Psudalbulbar palsy/Acupuncture Dysphagia
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Effect of Platelet Activation and Endothelial Cell Injury on Malignant Cancer 被引量:1
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作者 孙达春 张爱华 +2 位作者 李小亮 吴红 何志国 《The Chinese-German Journal of Clinical Oncology》 CAS 2003年第4期243-245,254,共4页
Objective: To study the effects of platelet activation and endothelial cell injury on the patients with malignant tumor and their prognoses.Methods: Radioimmunity and ELISA methods were employed to detect the TXB2, GM... Objective: To study the effects of platelet activation and endothelial cell injury on the patients with malignant tumor and their prognoses.Methods: Radioimmunity and ELISA methods were employed to detect the TXB2, GMP-140, vWF, cGMP and FN in 78 cases of malignant tumor and 40 healthy control persons.Results: The levels of TXB2, MP-140 and cGMP were increased in intestinal cancer group, lung cancer group and hepatic cancer group, while FN decreased in intestinal cancer and lung cancer group. cGMP was positively related to TXB2, GMP-140, vWF in malignant tumor group. FN was decreased in the group complicated with infection and the group with metastasis, while the other indexes increased. GMP-140, vWF and cGMP was decreased after operation except for the increasing of FN.Conclusion: Activations of platelet and injury of endothelial cells developed in patients with malignant tumor, and both of them affected the metastasis and prognosis of malignant tumor. Key words platelet activation - epithelium injury - malignant tumor - metastasis This work was supported by grants from Guangdong Medical Science foundation (A2000633). 展开更多
关键词 platelet activation epithelium injury malignant tumor METASTASIS
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CLINICAL RESEARCH OF IMPACTS ON PLASMA ENDOTHELIN AND INTELLIGENCE IN MULTI-INFARCT DEMATIA TREATED WITH CLUSTER PRICKING ON HEAD POINTS
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作者 王利春 王志勇 +4 位作者 陈艳艳 刘振江 李宝栋 杨京花 程为平 《World Journal of Acupuncture-Moxibustion》 2007年第4期16-21,共6页
Objective To probe into the impacts on the therapeutic effects and endothelin (ET) in multi-infarct dementia (MID) treated with cluster pricking on head points.Methods 60 cases of MID were randomized into acupunct... Objective To probe into the impacts on the therapeutic effects and endothelin (ET) in multi-infarct dementia (MID) treated with cluster pricking on head points.Methods 60 cases of MID were randomized into acupuncture group and western medicine group,treated with cluster pricking on head points and huperzien A tablet respectively.Plasma ET lever,HDS,ADL and CNFDS (clinical neurological functional defect scoring) were determined before treatment,and the statistical analysis showed that there were no significant difference (P〉0.05).Results In 8-week treatment,ET level in both groups were decreased,but it was decreased much more obviously in acupuncture group,indicating significant difference in the statistical comparison (P〈0.05).The scores of HDS and ADL were all up in acupuncture and western medicine groups,but the significant statistical difference was obtained in the comparison between acupuncture group and western medicine group (P〈0.05).In acupuncture group,the result of CNFDS was much down comparing with that before the treatment,indicating significant difference (P〈0.05);but in western medicine group,there was no significant difference in CNFDS before and after treatment (P〉0.05),suggesting that acupuncture reduces CNFDS of MID patient,neither for western medicine.Conclusion Cluster pricking on head points improves the intelligence of MID patient,reduces ET level and grades up HDS and ADL,moreover,it reduces CNFDS of MID patients and releases the symptoms. 展开更多
关键词 Cluster pricking/puncturing Multi-infarct dementia ENDOTHELIN Clinical research
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Synthesis of a novel pharmaceutical excipient: An anion exchange resin
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作者 Zhannuan Yin Xianghuan Meng +5 位作者 Yingshu Feng Ke Li Xinyi Tang Hongfei Liu Haibing He Wei Mi 《Journal of Chinese Pharmaceutical Sciences》 2025年第2期109-125,共17页
The aim of this study was to develop a novel pharmaceutical excipient:an anion exchange resin.Initially,polystyrenedivinylbenzene(PS-DVB)microspheres were synthesized via suspension polymerization.Subsequently,these m... The aim of this study was to develop a novel pharmaceutical excipient:an anion exchange resin.Initially,polystyrenedivinylbenzene(PS-DVB)microspheres were synthesized via suspension polymerization.Subsequently,these microspheres served as a substrate for chloromethylation using methanol,formaldehyde,and chlorosulfonic acid.By optimizing the reaction conditions,the chloromethylated microspheres were characterized using infrared spectroscopy,scanning electron microscopy,and the Mohr method.Under optimal reaction conditions,the resulting products exhibited uniformity and spherical morphology,with an average particle size of approximately 190μm.The PS-DVB microspheres effectively incorporated chloromethyl groups,as evidenced by a chlorine content of 14.67%.Scanning electron microscopy analysis indicated that the appearance of the microspheres remained largely unchanged post-reaction.Overall,the research findings demonstrated the successful preparation of the anion exchange resin.Characterization and quality assessment confirmed that the ion exchange resin met the required standards. 展开更多
关键词 Suspension polymerization reaction POLYSTYRENE-DIVINYLBENZENE Quaternarization reaction Anion exchange resin Fluidized bed coating method Pharmacokinetic research
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Analysis of the Current situation of Syphilis in a Sexually Transmitted Disease Clinic
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作者 郑华 马蕾 《Chinese Journal of Sexually Transmitted Infections》 2005年第1期17-20,共4页
Objective: To analyze the current situation of syphilis in the sexually transmitted diseases (STDs) clinic, from January 1994 to December 2002 was studied. Methods: All syphilis patients were confirmed by history,... Objective: To analyze the current situation of syphilis in the sexually transmitted diseases (STDs) clinic, from January 1994 to December 2002 was studied. Methods: All syphilis patients were confirmed by history, physical examination, dark-field microscopy of samples taken from the chancre or satellite lymph nodes,or positive serological tests. Results: From 1994 to 2002, there were 2067 cases of early syphilis, accounting for 20.01% (2067/10330) of all STD cases. The annual proportion of syphilis cases among all STD cases from 1994 to 2002 was 0.57%, 0.53%, 3.54%, 16.20%, 31.29%, 27.88%, 25.63%, 17.11%, 10.48%, respectively. Of 2067 syphilis patients,49.64% (1026/2067) were male and 50.36% (1041/2067) were female. 44.75% (925/2067) of all cases presented with primary syphilis, 44.90% (928/2067) with secondary syphilis, 9.77% (202/2067) with latent syphilis (without any conspicuous clinical signs or symptoms), and 0.58% (12/2067) with congenital syphilis. The 30-39 year old cohort accounted for the largest proportion, at 37.68% (779/2067) of all syphilis cases. The 20-29 year old cohort also accounted for a large proportion, at 37.20% (769/2067) of all cases,followed by the 40-49 year old cohort, at 17.95% (371/2067). Syphilis was most prevalent among the unemployed,self-employed laborers, and office workers in decreasing order. The majority of cases were graduates of either primary school, high school, or college. Of all syphilis cases, 87.86% (1816/2067) were married, and 12.14%(251/2067, including children) were unmarried. 76.78% (1587/2067) of all cases were acquired through extramarital intercourse. 14.03% (290/2067) of cases were infected by their spouses. 0.58% (12/2067) of cases were due to vertical transmission. 8.61% (178) of cases were acquired through indirect contact. Conclusion: The proportion of syphilis infection among all STDs remained stable from 1994 to 1995,quickly and dramatically increased from 1996 to 1999,and then gradually tapered down from 2000 to 2002. The incidence of congenital syphilis infections increased throughout the study period. 展开更多
关键词 SYPHILIS PREVALENCE
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紫杉醇药物涂层球囊治疗老年冠状动脉小血管病变的效果分析
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作者 杨亚兵 孙绪志 黄江燕 《大医生》 2024年第4期34-37,共4页
目的 分析紫杉醇药物涂层球囊对老年冠状动脉小血管病变患者的治疗效果,为临床提供参考。方法 回顾性分析2021年1月至2022年1月北京市仁和医院收治的88例行经皮冠状动脉介入治疗(PCI)术的老年冠状动脉小血管病变患者的临床资料。根据术... 目的 分析紫杉醇药物涂层球囊对老年冠状动脉小血管病变患者的治疗效果,为临床提供参考。方法 回顾性分析2021年1月至2022年1月北京市仁和医院收治的88例行经皮冠状动脉介入治疗(PCI)术的老年冠状动脉小血管病变患者的临床资料。根据术中介入治疗方案不同分为药物涂层球囊(DCB)组(49例,给予紫杉醇药物涂层球囊治疗)与药物洗脱支架(DES)组(39例,给予雷帕霉素支架治疗)。比较两组患者治疗效果、造影结果、主要心脏不良事件(MACE)发生情况及出血情况。结果 DCB组患者整体疗效优于DES组,且总有效率高于DES组(P<0.05)。术后即刻,两组患者最小血管直径大于术前、血管狭窄程度小于术前,且DCB组最小血管直径大于DES组、血管狭窄程度小于DES组(P<0.05);术后8个月,DCB组的晚期管腔丢失(LLL)水平低于DES组(P<0.05)。术后12个月,两组患者MACE总发生率比较,差异无统计学意义(P>0.05)。术后12个月,DCB组患者出血总发生率低于DES组(P<0.05)。结论 PCI中予紫杉醇药物涂层球囊治疗老年冠状动脉小血管病变患者,可有效预防患者二次狭窄,保障治疗效果与安全性。 展开更多
关键词 紫杉醇药物涂层球囊 老年冠状动脉小血管病变 治疗效果
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Viral and cellular determinants involved in hepadnaviral entry 被引量:37
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作者 Dieter Glebe Stephan Urban 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第1期22-38,共17页
Hepadnaviridae is a family of hepatotropic DNA viruses that is divided into the genera orthohepadnavirus of mammals and avihepadnavirus of birds. All members of this family can cause acute and chronic hepatic infectio... Hepadnaviridae is a family of hepatotropic DNA viruses that is divided into the genera orthohepadnavirus of mammals and avihepadnavirus of birds. All members of this family can cause acute and chronic hepatic infection, which in the case of human hepatitis B virus (HBV) constitutes a major global health problem. Although our knowledge about the molecular biology of these highly liver-specific viruses has profoundly increased in the last two decades, the mechanisms of attachment and productive entrance into the differentiated host hepatocytes are still enigmatic. The difficulties in studying hepadnaviral entry were primarily caused by the lack of easily accessible in vitro infection systems. Thus, for more than twenty years, differentiated primary hepatocytes from the respective species were the only in vitro models for both orthohepadnaviruses (e.g. HBV) and avihepadnaviruses (e.g. duck hepatitis B virus [DHBV]). Two important discoveries have been made recently regarding HBV: (1) primary hepatoo/tes from tree-shrews; i.e., Tupaia belangeri, can be substituted for primary human hepatocytes, and (2) a human hepatoma cell line (HepaRG) was established that gains susceptibility for HBV infection upon induction of differentiation in vitro. A number of potential HBV receptor candidates have been described in the past, but none of them have been confirmed to function as a receptor. For DHBV and probably all other avian hepadnaviruses, carboxypeptidase D (CPD) has been shown to be indispensable for infection, although the exact role of this molecule is still under debate. While still restricted to the use of primary duck hepatocytes (PDH), investigations performed with DHBV provided important general concepts on the first steps of hepadnaviral infection. However, with emerging data obtained from the new HBV infection systems, the hope that DHBV utilizes the same mechanism as HBV only partially held true. Nevertheless, both HBV and DHBV in vitro infection systems will help to: (1) functionally dissect the hepadnaviral entry pathways, (2) perform reverse genetics (e.g. test the fitness of escape mutants), (3) titrate and map neutralizing antibodies, (4) improve current vaccines to combat acute and chronic infections of hepatitis B, and (5) develop entry inhibitors for future clinical applications. 展开更多
关键词 Hepatitis B virus Duck hepatitis B virus Infection models Receptor Viral attachment Tupaia belangeri HEPARG Carboxypeptidase D
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