全文获取类型
收费全文 | 1514篇 |
免费 | 205篇 |
国内免费 | 15篇 |
专业分类
耳鼻咽喉 | 14篇 |
儿科学 | 57篇 |
妇产科学 | 22篇 |
基础医学 | 129篇 |
口腔科学 | 52篇 |
临床医学 | 204篇 |
内科学 | 436篇 |
皮肤病学 | 3篇 |
神经病学 | 82篇 |
特种医学 | 224篇 |
外科学 | 306篇 |
综合类 | 39篇 |
预防医学 | 53篇 |
眼科学 | 29篇 |
药学 | 30篇 |
中国医学 | 1篇 |
肿瘤学 | 53篇 |
出版年
2023年 | 18篇 |
2021年 | 29篇 |
2019年 | 22篇 |
2018年 | 51篇 |
2017年 | 19篇 |
2016年 | 35篇 |
2015年 | 36篇 |
2014年 | 61篇 |
2013年 | 84篇 |
2012年 | 64篇 |
2011年 | 89篇 |
2010年 | 62篇 |
2009年 | 81篇 |
2008年 | 97篇 |
2007年 | 56篇 |
2006年 | 51篇 |
2005年 | 48篇 |
2004年 | 40篇 |
2003年 | 36篇 |
2002年 | 38篇 |
2001年 | 31篇 |
2000年 | 34篇 |
1999年 | 32篇 |
1998年 | 27篇 |
1997年 | 31篇 |
1996年 | 30篇 |
1995年 | 21篇 |
1994年 | 16篇 |
1993年 | 23篇 |
1992年 | 26篇 |
1991年 | 21篇 |
1990年 | 36篇 |
1989年 | 43篇 |
1988年 | 30篇 |
1987年 | 33篇 |
1986年 | 22篇 |
1985年 | 28篇 |
1984年 | 12篇 |
1983年 | 17篇 |
1982年 | 15篇 |
1980年 | 16篇 |
1979年 | 17篇 |
1978年 | 11篇 |
1977年 | 11篇 |
1976年 | 14篇 |
1975年 | 13篇 |
1974年 | 10篇 |
1973年 | 10篇 |
1970年 | 10篇 |
1968年 | 13篇 |
排序方式: 共有1734条查询结果,搜索用时 78 毫秒
1.
2.
OBJECTIVES: To describe a newly developed telespirometry system consisting of a portable spirometer that transmits the lung ventilatory values by telephone from the patient's home to a remote monitoring center and to assess the ability of the telespirometry system to detect early signs of asthmatic deterioration. METHODS: Thirty-nine patients with moderate to severe asthma were monitored with the telespirometry system. The lung function testing and transmission of the spirometric data by telephone from the patient's home to a remote monitoring center were performed according to the patient's judgment. All previous transmissions of the spirometric data were analyzed retrospectively to detect early signs of asthmatic deterioration, which resulted in dispatch of the mobile intensive care unit (MICU) to the patient's home. RESULTS: In 19 patients (49%), analysis of the spirometric data detected early signs of asthmatic deterioration. Analysis of the spirometric data correlated with decisions to dispatch the MICU in 22 of 39 (56%) patients. In patients with severe asthma, the decision was made during oral communication between the patient and the operator and was based on clinical impression rather than functional results. CONCLUSION: Home monitoring of asthmatic patients with the telespirometry system may improve the management of the disease and the quality of life and reduce costly hospitalizations. 相似文献
3.
4.
5.
6.
7.
8.
9.
The human foot is a complex mechanical structure consisting of bones, ligaments and joints. They act together to provide a robust system capable of absorbing and dissipating the intermitted pressure that is subjected to its plantar surface during walking to prevent soft tissue breakdown. Current studies suggest that plantar foot pressure may lead to soft tissue breakdown (e.g. neuropathic ulceration) and hence research has so far concentrated on investigating the mechanical effects of plantar foot pressure on the foot’s integrity. This has been possible through the widely available pressure and force platforms as well as in-shoe pressure systems. However, to understand how plantar foot pressure causes soft tissue breakdown it is vital to investigate both the physiological–mechanical interactions between the skin and plantar foot pressure. This review suggests that with the current advances in technology, the physiological response of skin blood flow to mechanical plantar foot pressure should be investigated and correlated further, both during static and dynamic loading, by developing a new system capable of either measuring both variables simultaneously or by synchronising two systems in real time. 相似文献
10.