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   276828篇
  免费   9613篇
  国内免费   6121篇
耳鼻咽喉   2229篇
儿科学   8096篇
妇产科学   5265篇
基础医学   28465篇
口腔科学   3469篇
临床医学   26157篇
内科学   46743篇
皮肤病学   1535篇
神经病学   21832篇
特种医学   12351篇
外国民族医学   44篇
外科学   39633篇
综合类   16949篇
现状与发展   23篇
一般理论   20篇
预防医学   23987篇
眼科学   5560篇
药学   19973篇
  56篇
中国医学   5403篇
肿瘤学   24772篇
  2024年   280篇
  2023年   1503篇
  2022年   3804篇
  2021年   4960篇
  2020年   3515篇
  2019年   3235篇
  2018年   25065篇
  2017年   20076篇
  2016年   22078篇
  2015年   5270篇
  2014年   6371篇
  2013年   5719篇
  2012年   14318篇
  2011年   28921篇
  2010年   23507篇
  2009年   15160篇
  2008年   24500篇
  2007年   26932篇
  2006年   5853篇
  2005年   7766篇
  2004年   7096篇
  2003年   7620篇
  2002年   5406篇
  2001年   2691篇
  2000年   3045篇
  1999年   2853篇
  1998年   1768篇
  1997年   1676篇
  1996年   1391篇
  1995年   1255篇
  1994年   1074篇
  1993年   690篇
  1992年   1032篇
  1991年   886篇
  1990年   804篇
  1989年   673篇
  1988年   643篇
  1987年   566篇
  1986年   441篇
  1985年   358篇
  1984年   226篇
  1983年   179篇
  1982年   109篇
  1981年   98篇
  1980年   122篇
  1979年   117篇
  1978年   62篇
  1977年   59篇
  1974年   64篇
  1938年   60篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
介绍了采用爱宝疗液敷贻治疗宫颈糜烂的疗效情况,肯定了其应用价值。  相似文献   
142.
黄爱玲  刘晓英 《护理研究》2005,19(11):972-974
[目的]探讨吸烟对病人冠状动脉病变的影响。[方法]对吸烟组(5 0例)与不吸烟组(3 0例)进行冠状动脉造影,观察记录冠状动脉病变情况并进行统计学分析。[结果]两组冠状动脉病变记分、每日不同吸烟量与冠状动脉病变记分、不同的吸烟年限与冠状动脉病变记分比较均有统计学意义(P <0 .0 1)。[结论]长期吸烟可使冠状动脉病变程度加重,应加强对长期吸烟及冠状动脉介入术后病人的健康教育,有效预防和控制冠心病,提高人群的健康水平。  相似文献   
143.

Background  

For patients suffering of recurrent breast cancer within the irradiated breast, generally mastectomy is recommended. The normal tissue tolerance does not permit a second full-dose course of radiotherapy to the entire breast after a second breast-conserving surgery (BCS). A novel option is to treat these patients with partial breast irradiation (PBI). This approach is based on the hypothesis that re-irradiation of a limited volume will be effective and result in an acceptable frequency of side effects. The following report presents a single center experience with intraoperative radiotherapy (IORT) during excision of recurrent breast cancer in the previously irradiated breast.  相似文献   
144.
145.
A soleus flap as a local reconstructive option for soft-tissue coverage of a tibial wound in the distal third of the leg has never been well recognized. In a 2-year period, seven patients underwent reconstruction of a less extensive tibial wound (4 × 3 to 10 × 4 cm) in the distal third of the leg after orthopedic trauma with the laterally extended medial hemisoleus flap. The flap was elevated with emphasis on the preservation of the most distal perforators from the posterior tibial vessels to the flap as possible while allowing adequate rotation of the flap to cover the exposed tibia and/or hardware and on the possible preservation of foot planter flexion by reconstruction of the proximal Achilles’ tendon. In this series, there was no total or partial flap loss. All patients healed their tibial wounds primarily with reliable soft-tissue coverage, evidenced fracture healing, and good cosmetic outcome during follow-up. Thus, the laterally extended medial hemisoleus flap described by the author can be a reliable option for soft-tissue coverage of a less extensive tibial wound in the distal third of the leg. It offers a more cost-effective approach for managing this unique problem and can be performed by most reconstructive surgeons without microsurgical expertise.  相似文献   
146.
Skin is the most commonly used tissue for the transplantation. A meticulous care of the donor site is needed to prevent scarring, delayed healing, and pain. Various agents and dressing materials have been reported to help healing of skin graft donor sites. Sucralfate is an extensively used agent, which provides acute gastroprotection and acceleration of chronic ulcer healing. In this study, we assessed the effects of topical sucralfate on the healing of the split thickness skin graft donor sites in a prospective comparative way. The study was carried out on 32 randomly chosen patients undergoing surgery for various causes and requiring split thickness skin graft resurfacing. The upper halves of the skin graft donor sites on the thighs were simply covered with paraffin gauze and the lower half was covered with sucralfate-soaked paraffin gauzes. The day of full epithelization varied from 6 to 9 days and 8–12 days on the sucralfate-applied areas and on the control sites, respectively. The mean value of the healing was 7.01 days in the studied lower halves and 10.8 days in the upper halves. The healing rate was strikingly faster and less painful on the sucralfate-applied areas. We were able to discharge patients earlier than usual, and patients’ comfort increased. It seems that sucralfate is a promising topical agent to increase the healing rate and decrease the incidence of associated problems such as pain and hypertrophic scar.  相似文献   
147.
Rabbits are the experimental animals of choice in many studies including flaps, wounds, and topical trials for new pharmacological agents. Because the topical drugs and other materials used for dressing are irritating to the animal, they tend to remove dressings, bandages, drapes, insensate flaps, and also topical drugs by scratching, licking, and biting if they are within the reach of the animal. In this study, we report an easy to prepare, user-friendly, comfortable, and cheap dressing protector called a dressing shield to prevent these problems.  相似文献   
148.
149.
150.
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