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   997篇
  免费   94篇
  国内免费   5篇
耳鼻咽喉   8篇
儿科学   51篇
妇产科学   32篇
基础医学   124篇
口腔科学   42篇
临床医学   117篇
内科学   180篇
皮肤病学   23篇
神经病学   47篇
特种医学   28篇
外科学   85篇
综合类   22篇
预防医学   59篇
眼科学   69篇
药学   116篇
中国医学   10篇
肿瘤学   83篇
  2024年   6篇
  2023年   25篇
  2022年   74篇
  2021年   110篇
  2020年   43篇
  2019年   68篇
  2018年   67篇
  2017年   64篇
  2016年   66篇
  2015年   66篇
  2014年   92篇
  2013年   76篇
  2012年   92篇
  2011年   73篇
  2010年   41篇
  2009年   21篇
  2008年   29篇
  2007年   26篇
  2006年   17篇
  2005年   15篇
  2004年   8篇
  2003年   7篇
  2002年   6篇
  2001年   1篇
  1999年   1篇
  1998年   1篇
  1977年   1篇
排序方式: 共有1096条查询结果,搜索用时 15 毫秒
101.
ObjectiveTo present two cases of type IIA urethral duplication and propose a reproducible surgical approach.MethodsTwo cases are presented in this report. The first was a male child with a type IIA1 urethral duplication with two urethral channels arising from the bladder through separate bladder necks coursing to the glans penis. The second infant had a type IIA2 urethral duplication with a single bladder neck. Both children were repaired using a surgical approach that joined both urethral openings into a single orthopic meatus. This was accomplished by incising the common septum and utilizing techniques similar to that of a distal epispadias repair.ResultsAt six months of follow-up both infants are voiding from a single stream without complication. Long-term outcomes remain to be determined.ConclusionsThe technique presented in this report both functionally and cosmetically unites the two urethral meatuses while eliminating the risk of damage to the sphincter.  相似文献   
102.
Leishmania donovani is considered the causative organism of visceral leishmaniasis (VL) and post-kala-azar dermal leishmaniasis (PKDL). Testing of 4/29 DNA samples from VL and PKDL patients as well as 2/7 field isolates showed an aberrant internal transcribed spacer 1 (ITS1) restriction fragment length polymorphism (RFLP) pattern, which upon sequencing strongly matched Leptomonas seymouri, thus confirming its presence in Indian leishmaniasis.  相似文献   
103.
104.
105.
106.
107.
In renal transplant, there is a well-known deficiency in organ supply relative to demand. Live donation provides superior results when compared with deceased donation including a better rate of graft success and fewer immunologic complications. This deficiency in organs leads to significant morbidity and mortality rates. Alternative avenues have been extensively explored that may expand the live donor pool. They include altruistic donation as well as paired and pooled exchange programs. Altruistic donation is a truly selfless act from a donor unknown to the recipient. Kidney paired donation involves 2 incompatible donor-recipient pairs swapping donors to produce compatibility. Pooled donation involves at least 2 pairs, and can take the form of domino chains in which altruistic input sets up a chain of transplants, in which each recipient's incompatible donor makes a donation for the next recipient. Despite application of these various methods, there lie extensive ethical issues surrounding them. Misconceptions frequently occur; for instance, the perceived benefit that donating an organ to a loved one is greater for a related donor than for an altruistic one. Additionally, it is frequently believed that immunologic incompatibility offers coerced donors liberation from surgery, and that overcoming these barriers by introducing exchange programs provides vulnerable donors less protection. This article explores these and other complex ethical issues surrounding the various methods of expanding the donor pool. The authors offer opinions that challenge the ethical issues and attempt to overcome those views that hinder progress in the field.  相似文献   
108.
Importance:Religiosity and guilt are commonly featured in obsessive-compulsive disorders (OCD). The role of religiosity and guilt in OCD has been frequently studied in the literature and suggested that greater religiosity/spirituality, paranormal beliefs, and magical ideation have often been associated with enhanced obsessive-compulsive behavior. India being a multi-religious country, it is particularly notable that a research was required to assess the role of religiosity and guilt in symptomatology and outcome in OCD, a condition in which religious themes are often present. It has also been documented that the fear of guilt for doing something irresponsibly may lead to OCD symptoms.Objective:The study aimed to seek the role of religiosity and guilt in symptomatology and outcome of OCD. This study also aimed to assess the pattern of symptomatology of patients with OCD and the relation between religiosity and guilt.Settings and Design:This was a single-centered, prospective study for one year with six months follow-up.Methods and Material:Fifty OCD subjects of either gender, aged between 18 years and 45 years were included in this study and were assessed using Yale-Brown Obsessive Compulsive Scale, Belief into Action Scale, and The Guilt Inventory instruments for the measurement of OCD severity, religiosity, and guilt, respectively. All the recorded data were analyzed using IBM® SPSS® version 20.1.Results:At baseline, OCD severity was positively correlated with religiosity and guilt, while after 6-month follow-up, OCD severity was negatively correlated with religiosity and positively correlated with guilt.Conclusion:Religiosity and guilt have significant effect on the symptomatology and outcome of OCD.  相似文献   
109.
110.
Purpose:The aim of this study was to know proportion of white cataracts from among patients coming for cataract surgery, and to find causes delaying uptake of cataract surgery.Methods:A hospital-based, prospective study enrolled patients of senile cataract between April 2018 and March 2019. The proportion of white cataract was calculated and underlying causes delaying uptake of cataract surgery studied.Results:White cataracts constituted 13.5% of total 3634 senile cataract patients, with gender disparity disfavoring women. Bilateral white cataract was presentation in 39 (8%) patients and lens-related glaucoma in 24 (5%) patients. Pseudophakia in the other eye was single most common cause of delay.Conclusion:A large proportion of white cataracts suggest that penetration of cataract surgical services in not reaching to the most eligible individual.  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