首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3955篇
  免费   281篇
  国内免费   77篇
耳鼻咽喉   32篇
儿科学   123篇
妇产科学   58篇
基础医学   521篇
口腔科学   94篇
临床医学   326篇
内科学   337篇
皮肤病学   495篇
神经病学   212篇
特种医学   59篇
外科学   133篇
综合类   560篇
预防医学   292篇
眼科学   297篇
药学   363篇
  2篇
中国医学   332篇
肿瘤学   77篇
  2023年   72篇
  2022年   67篇
  2021年   146篇
  2020年   124篇
  2019年   132篇
  2018年   116篇
  2017年   133篇
  2016年   136篇
  2015年   103篇
  2014年   258篇
  2013年   272篇
  2012年   288篇
  2011年   238篇
  2010年   195篇
  2009年   159篇
  2008年   169篇
  2007年   154篇
  2006年   174篇
  2005年   137篇
  2004年   129篇
  2003年   124篇
  2002年   99篇
  2001年   96篇
  2000年   74篇
  1999年   68篇
  1998年   37篇
  1997年   46篇
  1996年   49篇
  1995年   45篇
  1994年   49篇
  1993年   30篇
  1992年   45篇
  1991年   29篇
  1990年   27篇
  1989年   26篇
  1988年   16篇
  1987年   21篇
  1986年   19篇
  1985年   51篇
  1984年   33篇
  1983年   27篇
  1982年   33篇
  1981年   20篇
  1980年   10篇
  1979年   3篇
  1978年   6篇
  1977年   5篇
  1976年   18篇
  1972年   2篇
  1968年   1篇
排序方式: 共有4313条查询结果,搜索用时 15 毫秒
1.
《Vaccine》2021,39(40):5729-5731
IntroductionConcerns were raised over an increase in Bell's palsy, herpes simplex and herpes zoster after BNT162b2 vaccination, all are manifestations of herpesviruses reactivation. As herpesviruses commonly reactivate in the oropharynx, we have hypothesized that oropharyngeal shedding of herpesviruses will increase after vaccination.MethodsImmune-competent Adults, excluding those using topical steroids or manifesting symptomatic herpesvirus infection, were sampled before BNT162b2 vaccination and one week after. Herpesviruses 1–7 shedding was tested with a multiplexed PCR.ResultsIn 103 paired samples the prevalence of herpesviruses was similar before and after vaccination: HSV1, 3.9% vs. 5.8% (p = 0.75); HSV2, 0% vs. 1% (p = not applicable, NA); VZV, 0% vs. 0% (p = NA); EBV, 14.6% vs. 17.5% (p = 0.63); CMV, 0% vs. 0% (p = NA); HHV6, 4.9% vs. 7.8% (p = 0.55); HHV7, 71.8% vs. 72.8% (p = 1); any herpesvirus, 73.8% vs. 74.8% (p = 1).DiscussionWe did not find evidence for increased oropharyngeal reactivation of herpesviruses one week after BNT162b2.  相似文献   
2.

Background

The ZOE-50 (NCT01165177) and ZOE-70 (NCT01165229) phase 3 clinical trials showed that the adjuvanted recombinant zoster vaccine (RZV) was ≥90% efficacious in preventing herpes zoster in adults. Here we present a comprehensive overview of the safety data from these studies.

Methods

Adults aged ≥50 (ZOE-50) and ≥70 (ZOE-70) years were randomly vaccinated with RZV or placebo. Safety analyses were performed on the pooled total vaccinated cohort, consisting of participants receiving at least one dose of RZV or placebo. Solicited and unsolicited adverse events (AEs) were collected for 7 and 30?days after each vaccination, respectively. Serious AEs (SAEs) were collected from the first vaccination until 12?months post-last dose. Fatal AEs, vaccination-related SAEs, and potential immune-mediated diseases (pIMDs) were collected during the entire study period.

Results

Safety was evaluated in 14,645 RZV and 14,660 placebo recipients. More RZV than placebo recipients reported unsolicited AEs (50.5% versus 32.0%); the difference was driven by transient injection site and solicited systemic reactions that were generally seen in the first week post-vaccination. The occurrence of overall SAEs (RZV: 10.1%; Placebo: 10.4%), fatal AEs (RZV: 4.3%; Placebo: 4.6%), and pIMDs (RZV: 1.2%; Placebo: 1.4%) was balanced between groups. The occurrence of possible exacerbations of pIMDs was rare and similar between groups. Overall, except for the expected local and systemic symptoms, the safety results were comparable between the RZV and Placebo groups irrespective of participant age, gender, or race.

Conclusions

No safety concerns arose, supporting the favorable benefit-risk profile of RZV.  相似文献   
3.
《Vaccine》2019,37(36):5422-5427
BackgroundPostherpetic neuralgia (PHN) occurs in 5–30% of individuals with herpes zoster (HZ) and is characterized by long-lasting pain. Zoster vaccine live (ZVL) is licensed for people 50 years and older to prevent HZ and PHN. This study evaluated vaccine effectiveness (VE) of ZVL against PHN.MethodsWe conducted an open cohort study within Kaiser Permanente Northern California with continuous accrual of people as they became age-eligible for ZVL. We defined PHN using a PHN diagnosis between 90 and 365 days after an incident episode of HZ. We estimated VE against PHN using Cox regression with a calendar timeline stratified by year of birth and adjusted for sex, race, influenza vaccination, outpatient visit frequency, comorbidities, and immune compromise status.ResultsFrom 2007 to 2016, 1·5 million people entered the study population and 33% received ZVL. During 7·6 million person-years of follow-up, there were 62,205 HZ cases, 4150 (6·7%) of which went on to develop PHN. Overall VE for PHN was 64·8% (95% CI 61·3, 68). VE was 82·8% (95% CI 77·6, 86·7) during the first year after vaccination, 58·3% (95% CI 50.1, 65.2) during the third year, and then waned more gradually to 48·7% (95% CI 30·2, 62·3) during the eighth year. VE in persons vaccinated when aged 80 years or older was similar to VE in younger vaccinees. VE in persons vaccinated when immune compromised was similar to VE in immune competent.ConclusionsOverall, ZVL was 65% effective against PHN. It was effective in all age groups and provided moderate protection through 8 years.  相似文献   
4.
《Vaccine》2019,37(50):7408-7418
The development of vaccines against herpes simplex virus (HSV) is an important global goal for sexual and reproductive health. A key priority to advance development of HSV vaccines is the definition of preferred product characteristics (PPCs), which provide strategic guidance on World Health Organization (WHO) preferences for new vaccines, specifically from a low- and middle-income country (LMIC) perspective. To start the PPC process for HSV vaccines, the WHO convened a global stakeholder consultation in March 2017, to define the priority public health needs that should be addressed by HSV vaccines and discuss the key considerations for HSV vaccine PPCs, particularly for LMICs. Meeting participants outlined an initial set of overarching public health goals for HSV vaccines in LMICs, which are: to reduce the acquisition of HIV associated with HSV-2 infection in high HIV-prevalence populations and to reduce the burden of HSV-associated disease, including mortality and morbidity due to neonatal herpes and impacts on sexual and reproductive health. Participants also considered the role of prophylactic versus therapeutic vaccines, whether both HSV-2 and HSV-1 should be targeted, important target populations, and infection and disease endpoints for clinical trials. This article summarizes the main discussions from the consultation.  相似文献   
5.
《Diagnostic Histopathology》2020,26(12):551-555
This article concentrates on specific infections of the distal gastrointestinal (GI) tract, particularly those that are transmitted sexually, by anal intercourse. Syphilis, gonorrhoea and lymphogranuloma venereum (LGV) are age old and well known diseases, but the features may be unfamiliar to GI histopathologists. Every histopathology trainee will have seen Herpes simplex virus (HSV) infection of squamous epithelium (e.g. oesophagus, vulva and anus), but the HSV pseudotumour of the anus/perineum can present a pitfall to those who have not previously encountered this entity. Another, more recently described, entity that has a predilection for the ano-rectal region is Epstein–Barr Virus (EBV) positive mucocutaneous ulcer, and this also presents a diagnostic trap to the unwary.  相似文献   
6.
介绍运用经方辨治水痘和带状疱疹的异同。认为两者均为水痘-带状疱疹病毒感染引起的常见皮肤病。治疗水痘应以祛邪为主,辨证以六经中的太阳、阳明、少阳三阳经为重点,可运用石膏类方等;而对于带状疱疹,应重视扶正,辨证宜兼顾六经、衡量虚实,可予柴胡类方等。  相似文献   
7.
8.
《中国现代医生》2020,58(36):103-106+110
目的 对复方倍他米松注射液联合泛昔洛韦胶囊、普瑞巴林胶囊治疗带状疱疹的临床疗效进行观察并探讨。方法 选取2018 年1 月~2019 年12 月我院收治的118 例带状疱疹患者为研究对象,采用随机抽签的方式将患者分为对照组(泛昔洛韦胶囊+普瑞巴林胶囊+甲钴胺片+维生素B1 片)与观察组(联合复方倍他米松注射液),比较两组治疗总有效率、VAS 评分、QS 评分、C 反应蛋白、无新发皮疹时间、结痂时间及疼痛停止时间、随访2 个月后带状疱疹后遗神经痛发生率以及不良反应发生率。结果 观察组与对照组治疗总有效率分别为94.92%及76.27%,组间对比差异有统计学意义(P<0.05);治疗后,观察组VAS 评分显著低于对照组;观察组QS 评分低于对照组(P<0.05);治疗后,观察组C 反应蛋白显著低于对照组(P<0.05);观察组无新发皮疹时间、结痂时间及疼痛停止时间分别显著短于对照组(P<0.05);随访2 个月后,发现观察组带状疱疹后遗神经痛发生率显著低于对照组(P<0.05);观察组不良反应发生与对照组比较,差异无统计学意义(P>0.05)。结论 复方倍他米松注射液联合泛昔洛韦胶囊、普瑞巴林胶囊治疗带状疱疹不仅效果好且安全性高,值得使用。  相似文献   
9.
目的观察双重围刺配合刺络拔罐治疗急性期带状疱疹中治疗频次对临床疗效的影响。方法采用随机数字表法将100例急性期带状疱疹患者分为两组,每组50例。两组患者均口服盐酸伐昔洛韦和甲钴胺,联合双重围刺配合刺络拔罐治疗。试验组双重围刺法配合刺络拔罐的治疗频次为每日2次,对照组双重围刺法配合刺络拔罐的治疗频次为每日1次。对比观察两组患者治疗的临床疗效,止疱、结痂、脱痂时间,治疗前后疼痛视觉模拟量表(VAS)评分,疼痛缓解程度,每疗程末疼痛持续时间以及带状疱疹后遗神经痛发生率。结果试验组总有效率为98.0%,对照组总有效率为94.0%;两组治疗后VAS评分均较治疗前降低(P<0.05),且试验组低于对照组(P<0.05);试验组止疱、结痂、脱痂时间短于对照组(P<0.05);试验组疼痛缓解程度大于对照组(P<0.05);试验组前3个疗程末日疼痛持续时间均短于对照组(P<0.05);试验组后遗神经痛发生率为10.0%,对照组为18.0%。结论西药口服联合每日2次的双重围刺配合刺络拔罐对急性期带状疱疹患者可提高临床疗效,减轻患者疼痛持续时间及疼痛程度,缩短病程,疗效肯定。  相似文献   
10.
【摘要】 目的 探讨妊娠期、围生期带状疱疹的临床特征、治疗及预后。方法 收集2011年1月至2020年12月郑州大学第一附属医院住院治疗的妊娠期、围生期带状疱疹患者的临床资料,回顾分析临床特征、治疗及预后情况。结果 纳入25例,其中妊娠期22例(孕10 ~ 38周,孕早期1例、孕中期13例、孕晚期8例),产后1周内3例;年龄22 ~ 37岁,病程2 ~ 9 d。临床表现:皮疹位于头面部8例,胸背部5例,腰腹部7例,上肢1例,下肢3例,会阴1例,3例为播散性带状疱疹。皮疹形态均为红斑、丘疱疹、水疱,其中4例合并血疱,3例合并大疱,6例合并糜烂、渗出;5例发热,7例轻度、6例中度、11例重度疼痛。治疗:16例妊娠期、3例产后患者进行抗病毒治疗(口服或静脉滴注阿昔洛韦、单磷酸阿糖腺苷、膦甲酸钠氯化钠注射液),24例应用营养神经药物,1例妊娠期患者、3例产妇进行镇痛治疗,其他治疗包括抗感染、湿敷、红光照射等。预后:1例妊娠期患者早产,其余妊娠期患者均足月生产,新生儿无异常。3例妊娠期患者出现后遗症,1例为疼痛,2例为瘙痒。结论 本文25例妊娠期、围生期带状疱疹的治疗未观察到对胎儿、新生儿有明显影响。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号