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   1466792篇
  免费   116214篇
  国内免费   3462篇
耳鼻咽喉   19110篇
儿科学   47755篇
妇产科学   42142篇
基础医学   207977篇
口腔科学   39963篇
临床医学   130399篇
内科学   298141篇
皮肤病学   34723篇
神经病学   121775篇
特种医学   55083篇
外国民族医学   464篇
外科学   218081篇
综合类   33018篇
现状与发展   3篇
一般理论   507篇
预防医学   114852篇
眼科学   32577篇
药学   102258篇
  1篇
中国医学   3545篇
肿瘤学   84094篇
  2021年   11851篇
  2019年   12706篇
  2018年   18400篇
  2017年   13764篇
  2016年   15372篇
  2015年   17741篇
  2014年   24330篇
  2013年   36005篇
  2012年   50270篇
  2011年   52619篇
  2010年   30445篇
  2009年   28707篇
  2008年   48354篇
  2007年   50971篇
  2006年   51773篇
  2005年   49998篇
  2004年   47417篇
  2003年   45033篇
  2002年   43405篇
  2001年   73962篇
  2000年   75767篇
  1999年   62207篇
  1998年   17167篇
  1997年   15556篇
  1996年   15715篇
  1995年   14917篇
  1994年   13487篇
  1993年   12677篇
  1992年   45944篇
  1991年   43577篇
  1990年   41555篇
  1989年   39631篇
  1988年   36232篇
  1987年   35400篇
  1986年   32922篇
  1985年   31343篇
  1984年   23907篇
  1983年   20076篇
  1982年   12276篇
  1981年   10843篇
  1979年   20741篇
  1978年   14614篇
  1977年   12118篇
  1976年   11396篇
  1975年   11643篇
  1974年   14021篇
  1973年   13558篇
  1972年   12640篇
  1971年   11487篇
  1970年   10923篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
Hepatocellular carcinoma (HCC) is the most frequent primary liver cancer and presents together with cirrhosis in most cases. In addition to commonly recognized risk factors for HCC development, such as hepatitis B virus/hepatitis C virus infection, age and alcohol/tobacco consumption, there are nutritional risk factors also related to HCC development including high intake of saturated fats derived from red meat, type of cooking (generation of heterocyclic amines) and contamination of foods with aflatoxins. On the contrary, protective nutritional factors include diets rich in fiber, fruits and vegetables, n-3 polyunsaturated fatty acids and coffee. While the patient is being evaluated for staging and treatment of HCC, special attention should be paid to nutritional support, including proper nutritional assessment and therapy by a multidisciplinary team. It must be considered that these patients usually develop HCC on top of long-lasting cirrhosis, and therefore they could present with severe malnutrition. Cirrhosis-related complications should be properly addressed and considered for nutritional care. In addition to traditional methods, functional testing, phase angle and computed tomography scan derived skeletal muscle index-L3 are among the most useful tools for nutritional assessment. Nutritional therapy should be centered on providing enough energy and protein to manage the increased requirements of both cirrhosis and cancer. Supplementation with branched-chain amino acids is also recommended as it improves response to treatment, nutritional status and survival, and finally physical exercise must be encouraged and adapted to individual needs.  相似文献   
105.
106.
107.
108.

Objective

To discover the experiences of end-of-life patients attended by the emergency services, through the discourse of the family caregivers who accompanied the family member in this care transit.

Method

A qualitative approach study, based on the paradigm of hermeneutical phenomenology. In total, 81 family caregivers participated. The techniques used were the in-depth interview and the discussion group, with a total of 5 discussion groups and 41 interviews. The period of data collection was carried out between January 2013 and June 2014.

Results

In the network of discourses obtained with respect to “Urgent Care”, all the codes were grouped in relation to a single argumentative line: deficiencies in urgent care. Among them, we found different dimensions that are established depending on the different times of care, or the different determinant aspects of these deficiencies: disorganization of the care received, lack of experience of the professionals in emergencies, application of general protocols in the emergency services, inadequate care in the treatment received, delays in emergency care.

Conclusions

In general, we highlight the dissatisfaction of the family members with respect to the care received from the emergency services. The needs of these types of situation are not covered from these services and are of low quality. Therefore, it is necessary to reorient the care protocols for these patients.  相似文献   
109.
110.
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