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   3031篇
  免费   97篇
  国内免费   2篇
耳鼻咽喉   22篇
儿科学   151篇
妇产科学   93篇
基础医学   260篇
口腔科学   91篇
临床医学   444篇
内科学   717篇
皮肤病学   115篇
神经病学   127篇
特种医学   21篇
外科学   427篇
综合类   67篇
一般理论   19篇
预防医学   204篇
眼科学   55篇
药学   252篇
肿瘤学   65篇
  2016年   25篇
  2015年   36篇
  2014年   25篇
  2013年   69篇
  2012年   27篇
  2010年   83篇
  2009年   95篇
  2008年   33篇
  2007年   25篇
  2006年   31篇
  2003年   19篇
  2001年   31篇
  2000年   30篇
  1999年   68篇
  1998年   103篇
  1997年   142篇
  1996年   131篇
  1995年   101篇
  1994年   92篇
  1993年   86篇
  1992年   91篇
  1991年   82篇
  1990年   65篇
  1989年   78篇
  1988年   78篇
  1987年   66篇
  1986年   67篇
  1985年   67篇
  1984年   63篇
  1983年   45篇
  1982年   59篇
  1981年   62篇
  1980年   52篇
  1979年   39篇
  1978年   34篇
  1977年   36篇
  1976年   29篇
  1975年   25篇
  1974年   21篇
  1972年   20篇
  1971年   19篇
  1970年   27篇
  1959年   51篇
  1958年   77篇
  1957年   92篇
  1956年   93篇
  1955年   62篇
  1954年   76篇
  1949年   28篇
  1948年   48篇
排序方式: 共有3130条查询结果,搜索用时 15 毫秒
1.
2.
3.
The Australian government established the Council on Overseas Professional Qualifications (COPQ) in 1969. In response to approaches by the occupational therapy profession, an Expert Panel in Occupational Therapy was established in 1979 in order to develop a screening examination to be used in assessing the competency of overseas trained occupational therapists. This paper describes the development of the COPQ examination for all overseas qualified occupational therapists wishing to work in Australia; the experience of candidates since its inception in 1983; and the problems associated with achieving recognition of the COPQ examination throughout Australia given the lack of uniform recognition procedures in the various States and Territories. The need for a consistent national approach to the policy of recognition and employment of overseas trained occupational therapists is addressed, with stress placed on the need for all employer groups, in both the public and the private sectors, to cooperate with COPQ's assessment procedures.  相似文献   
4.
5.
6.
7.
Since the mid-1970s, the Margaret Sanger Center of Planned Parenthood of New York City has prepared nurses and nurse midwives from less developed countries to be family-planning nurse practitioners. These nurse practitioners then provide services to patients, train other staff, and manage integrated family-planning clinics. More than 120 nurses and nurse midwives have arrived in groups of 10 at the Sanger Center, with 72 attending since 1981. Each course lasts 10 weeks. The core curriculum provides trainees with skills in women's health care including contraception, in training and advocacy, and in management of clinics. Whether, in the current period of scarce resources, cross-cultural training programs of this type remain a worthwhile investment, and if so, which of their components are most important to this success, is assessed.  相似文献   
8.
A Comparison of mortality from ischaemic heart disease underthe age of 60 for 1980 to 1981 between the Grampian Health Boardand the North Staffordshire Health Authority has been made.A total of 993 deaths was notified by death certificate fromthe two areas of similar population of which 434 were from Grampianand 559 from North Staffordshire. After examination of generalpractitioner and hospital case notes, autopsy reports and deathcertificates, nearly all (532) of the North Staffordshire deathswere accepted as being due to ischaemic heart disease but onlythree-fifths (263) of the Grampian deaths could be begin besubstantiated as there was inadequate information for the remainder.Deaths from ischaemic heart disease seem apparently to be twofoldgreater in North Staffordshire than Grampian but much of thisdiscrepancy could be attributed to a widely different autopsyrate and to unavailability of case notes. Experience of thissurvey suggests that the results of other epidemiological investigationsmay be equally or even more unreliable.  相似文献   
9.
Serum levels of carbohydrate-deficient transferrin (CDT) weremeasured in subjects of two independent studies using two differentcommercial kits. The kits measure CDT either as a percentageof total transferrin (AXIS %CDTTM, AXIS Biochemicals AS, Norway),or as the absolute amount (CDTectTM, Pharmacia, Sweden). Ina population of males (mean age 41 years) consisting of alcoholics,heavy, moderate and non-drinkers, a strong correlation was foundbetween AXIS %CDT and CDTect results (r=0.92, n=58, P<0.001).Sensitivity and specificity in detecting chronic alcoholic drinkingof over 60 g/day were 78 and 94% for the AXIS assay, and 83and 88% for the CDTect assay, respectively. In a populationfrom a birth cohort study, consisting of 21-year-old males andfemales with less excessive alcohol consumption, the correlationbetween AXIS %CDT and CDTect CDT was weaker but still statisticallysignificant (r=0.46. n=212, =<0.001). In this population,with specificities >83% in detecting alcohol consumptionlevels of  相似文献   
10.
Little research attention has focused on ways to encourage physician response to prenatal substance exposure. We report initial results from a study examining the impact of state laws and work-place policies on physician response by combining legal analyses and data from a national physician survey. Our findings indicate that the message that laws and policies exist usually does not reach physicians. However, when the message does come through, some physician behaviors are influenced. In particular, physicians in states with clearer policies and behavioral expectations are significantly more likely to know and understand the law than physicians in other states. Further, believing that a work-place protocol on prenatal substance exposure exists is associated with significantly increased likelihood of an active response in case vignettes portraying prenatal substance exposure. The findings suggest that state legislative behaviors may increase physician response to prenatal substance exposure, but that response depends on the nature of the policy and on efforts to disseminate it.  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