全文获取类型
收费全文 | 25049篇 |
免费 | 2334篇 |
国内免费 | 74篇 |
专业分类
耳鼻咽喉 | 261篇 |
儿科学 | 569篇 |
妇产科学 | 342篇 |
基础医学 | 3067篇 |
口腔科学 | 796篇 |
临床医学 | 3251篇 |
内科学 | 5352篇 |
皮肤病学 | 613篇 |
神经病学 | 1856篇 |
特种医学 | 1014篇 |
外科学 | 3539篇 |
综合类 | 460篇 |
一般理论 | 24篇 |
预防医学 | 2663篇 |
眼科学 | 356篇 |
药学 | 1983篇 |
中国医学 | 24篇 |
肿瘤学 | 1287篇 |
出版年
2021年 | 361篇 |
2020年 | 206篇 |
2019年 | 345篇 |
2018年 | 375篇 |
2017年 | 274篇 |
2016年 | 334篇 |
2015年 | 386篇 |
2014年 | 523篇 |
2013年 | 826篇 |
2012年 | 1124篇 |
2011年 | 1115篇 |
2010年 | 626篇 |
2009年 | 579篇 |
2008年 | 1032篇 |
2007年 | 1046篇 |
2006年 | 1079篇 |
2005年 | 1095篇 |
2004年 | 1017篇 |
2003年 | 974篇 |
2002年 | 971篇 |
2001年 | 977篇 |
2000年 | 1001篇 |
1999年 | 845篇 |
1998年 | 313篇 |
1997年 | 265篇 |
1996年 | 244篇 |
1995年 | 254篇 |
1994年 | 207篇 |
1993年 | 212篇 |
1992年 | 609篇 |
1991年 | 629篇 |
1990年 | 586篇 |
1989年 | 517篇 |
1988年 | 490篇 |
1987年 | 482篇 |
1986年 | 479篇 |
1985年 | 475篇 |
1984年 | 340篇 |
1983年 | 294篇 |
1982年 | 218篇 |
1981年 | 207篇 |
1979年 | 324篇 |
1978年 | 239篇 |
1977年 | 202篇 |
1975年 | 167篇 |
1974年 | 214篇 |
1973年 | 204篇 |
1972年 | 169篇 |
1971年 | 192篇 |
1970年 | 170篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
This report aims to encourage optometrists to reflect on the legal implications of clinical contact lens practice, with particular reference to the practice of orthokeratology (ortho-k), which has seen a recent revival of interest. A patient may claim compensation if an optometrist is negligent by breaching his duty to exercise reasonable care and skill in diagnosis, advice or treatment. However, the optometrist will only be liable for reasonably foreseeable harm to the patient, so practitioners need to be fully aware of the foreseeable risks. Failure to adequately inform the patient may lead to a claim for negligence, if disclosure of the risks would have influenced the patient's decision to undergo or forego the procedure. It is important that the professional bodies establish guidelines on acceptable practice, with particular emphasis on the provision of information to patients. Reasonable disclosure, use of appropriate information/consent forms, and proper documentation of cases, should all focus on the needs of, and benefits to, patients. 相似文献
93.
94.
The prevalence of different measurements of respiratory illness among construction painters was examined and the relation between respiratory illness and employment as a painter assessed in a cross sectional study of current male members of two local affiliates of a large international union of painters. Respiratory illness was measured by questionnaire and spirometry. Longer employment as a painter was associated with increased prevalence of chronic obstructive disease and an interactive effect was observed for smoking and duration of employment as a painter. Multiple regression analysis showed a significant association between years worked as a painter and a decrement in FEV1 equal to about 11 ml for each year worked. This association was larger among painters who had smoked. The prevalence of chronic bronchitis was significantly associated with increased use of spray application methods. 相似文献
95.
Background : In order to find the most useful computerized auditing system for the needs of the QE II Hospital surgical department three surgical auditing software programs were assessed. Methods : The Otago University Surgical Auditing Program, the Australian Surgical Auditing Program, and RACS-Audit were trialled for a period of 1 month each. The software programs were evaluated to find the time requirements for data entry, the level of surgical knowledge needed for effective audit information entry, and the perceived usefulness of the generated reports. Results : It was found that the Otago University program best suited the needs of the department. This system was designed for use in a hospital environment with multiple users. The method of data collection was simple and rapid. Entry of data into the program was logical, well structured and able to be performed by both junior medical staff and clerical staff. Reports generated by this system included information in an appropriate format for the departments' morbidity and mortality meetings. Conclusion : Personal computers are an ideal tool for the undertaking of surgical audit. Software programs are designed for different uses and should be critically assessed to ensure that the method of data entry, the time involved, and the reports generated enable an efficient and effective audit to be carried out. 相似文献
96.
97.
98.
99.
Around one-quarter of stoma patients experience clinically significant psychological symptoms post-operatively. Psychological disorders are often not detected by those involved with the care of stoma patients. Past psychiatric history, dissatisfaction with preoperative preparation for surgery, postoperative physical symptomatology and the presence of negative stoma-related thoughts/beliefs have all been shown to be significantly associated with psychological morbidity after surgery. These findings suggest that healthcare professionals (especially surgeons involved with this patient population) should ask all patients about these factors before and after surgery. Questionnaires could be used to screen for difficulties and/or staff could undertake training aimed at improving the detection of psychological morbidity and endeavour to strengthen links with liaison mental health services. Future research in this area should be prospective, using psychometrically valid measures and be focused on the prediction, prevention, detection and treatment of poor psychological adjustment after stoma surgery. 相似文献
100.