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   412篇
  免费   41篇
耳鼻咽喉   4篇
儿科学   10篇
妇产科学   9篇
基础医学   36篇
口腔科学   9篇
临床医学   90篇
内科学   114篇
皮肤病学   3篇
神经病学   25篇
特种医学   2篇
外科学   64篇
综合类   14篇
一般理论   5篇
预防医学   19篇
眼科学   12篇
药学   35篇
肿瘤学   2篇
  2017年   8篇
  2016年   12篇
  2015年   12篇
  2014年   10篇
  2013年   13篇
  2012年   9篇
  2011年   5篇
  2010年   19篇
  2009年   9篇
  2007年   6篇
  2006年   3篇
  2005年   2篇
  2003年   3篇
  2002年   2篇
  2001年   5篇
  1999年   19篇
  1998年   18篇
  1997年   20篇
  1996年   24篇
  1995年   22篇
  1994年   10篇
  1993年   16篇
  1992年   10篇
  1991年   14篇
  1990年   15篇
  1989年   15篇
  1988年   10篇
  1987年   8篇
  1986年   4篇
  1985年   3篇
  1984年   4篇
  1983年   5篇
  1982年   6篇
  1981年   2篇
  1980年   4篇
  1979年   4篇
  1978年   3篇
  1971年   2篇
  1969年   2篇
  1963年   4篇
  1960年   2篇
  1959年   8篇
  1958年   19篇
  1957年   7篇
  1956年   12篇
  1955年   14篇
  1954年   7篇
  1949年   3篇
  1948年   5篇
  1947年   2篇
排序方式: 共有453条查询结果,搜索用时 15 毫秒
411.
412.
413.
The most common model of the human personality implicit in mosthealth promotion campaigns is based predominantly on sociallearning theory. We would suggest that a complementary approachthat uses a humanistic psychological model aimed at the integrationof the disparate parts of the self in conjunction with sociallearning theory may be more effective in achieving the long-termgoals of health promotion. In a survey of a "normal" population, 80% of 330 respondentsreported that they experienced "self-agreements", and 44% explicitlydescribed a process of "internal dialogue", in relation to issuessuch as smoking, weight-loss, drinking, personal relationships,working and studying. The dialogue appeared to take place betweendifferent "parts" of the self with different or opposite orientations—forexample a rational part with an emotional part, or a goal-orientatedpart with a hedonistic part. "Internal dialogue" appeared tobe a process that helped to resolve contradictions between externaldemands and internal needs. It also served to reduce internalconflicts in cases where certain aspects of a person's lifeproceeded as though it were out of contact with another, orwhere individuals lived in a "one-sided" manner and ignoredpart of themselves. In this study, it is suggested that in somecases these tensions were expressed in smoking or over-eating.Thus the attempts of health promotion campaigns at changingthese behaviours that are based on reasoned argument or socialmodels are inadequate. The potential use of the "internal dialogue"process that sought to align various facets of the self witha variety of health-related behaviours and the general enhancementof mental health, is discussed.  相似文献   
414.
We have utilized serological techniques and mixed lymphocyte culture (MLC) reactions to examine HLA-DR and HLA-D expression by heated (45 degrees C for 1 h) lymphocytes in order to study the functional relationship of these antigens. Heated lymphocytes do not stimulate proliferation of allogeneic lymphocytes in MLC, yet they express HLA-DR antigens. The fraction of peripheral blood lymphocytes (PBL) expressing DR is not altered by heating, nor is the staining intensity altered as detected by fluorescence microscopy. Alloantisera to "B cell alloantigens" recognize HLA-DR determinants on heated cells without any detectable change in either specificity or quantitative cytotoxic effects. Flow cytometry with monoclonal antibody demonstrates only minimal decrease in HLA-DR expression after heating. Thus stimulation in MLC requires more of the stimulating cell than the mere expression of HLA-DR.  相似文献   
415.

Purpose

We report a straightforward surgical technique for the correction and anatomical alignment of the skin in patients with various degrees of buried penis.

Materials and Methods

A combined series of 74 patients 7 months to 10 years old who were treated for buried penis at 2 institutions during a 7-year period. Patients presented with various symptoms, including balanitis, urinary tract infection, painful voiding, ballooning of the foreskin and urinary retention. In 29 patients (38%) trapped penis was due to previous circumcision. In our estimation the major anatomical defect in buried penis is an insufficient attachment of the dartos fascia and penile skin to Buck's fascia. Our technique involves making a circumferential incision of the inner preputial skin layer proximal to the corona, unfurling it from the shaft skin and leaving a coronal collar of approximately 1 cm. The annular band that usually constricts the corpora on retraction of the penile skin is incised, and the remaining proximal penile skin and dartos fascia are dissected off Buck's fascia proximally to the base of the penis. The penile dermis is sutured to the lateral aspect of the tunica albuginea at the penopubic junction and mid shaft of the penis. This technique restores normal anatomical relationships with excellent cosmetic results and negligible complications.

Results

At a median 5-year followup cosmesis was excellent in all case. Two patients with micropenis who required revision responded to endocrine therapy.

Conclusions

Excellent cosmetic results were obtained in all cases using this surgical technique.  相似文献   
416.
417.
One of the prices paid for chemo‐ and radiotherapy of cancer in children is damage to the vulnerable and developing healthy tissues of the body. Such damage can exist clinically or subclinically and can become apparent during active antineoplastic treatment or during remission decades later. Furthermore, effects of the tumor itself can significantly impact the physiologic state of the child. The anesthesiologist who cares for children with cancer or for survivors of childhood cancer should understand what effects cancer and its therapy can have on various organ systems. In part two of this three‐part review, we review the anesthetic issues associated with childhood cancer. Specifically, this review presents a systems‐based approach to the impact from both tumor and its treatment in children, followed by a discussion of the relevant anesthetic considerations.  相似文献   
418.
419.
420.
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