全文获取类型
收费全文 | 466篇 |
免费 | 38篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 3篇 |
儿科学 | 20篇 |
妇产科学 | 5篇 |
基础医学 | 50篇 |
口腔科学 | 44篇 |
临床医学 | 38篇 |
内科学 | 91篇 |
皮肤病学 | 16篇 |
神经病学 | 6篇 |
特种医学 | 94篇 |
外科学 | 52篇 |
综合类 | 27篇 |
预防医学 | 18篇 |
眼科学 | 7篇 |
药学 | 28篇 |
中国医学 | 1篇 |
肿瘤学 | 21篇 |
出版年
2024年 | 1篇 |
2023年 | 4篇 |
2022年 | 1篇 |
2020年 | 4篇 |
2018年 | 11篇 |
2017年 | 8篇 |
2016年 | 12篇 |
2015年 | 9篇 |
2014年 | 6篇 |
2013年 | 12篇 |
2012年 | 10篇 |
2011年 | 15篇 |
2010年 | 18篇 |
2009年 | 28篇 |
2008年 | 8篇 |
2007年 | 29篇 |
2006年 | 4篇 |
2005年 | 6篇 |
2004年 | 8篇 |
2003年 | 6篇 |
2002年 | 8篇 |
2001年 | 4篇 |
2000年 | 8篇 |
1999年 | 10篇 |
1998年 | 22篇 |
1997年 | 37篇 |
1996年 | 32篇 |
1995年 | 18篇 |
1994年 | 16篇 |
1993年 | 18篇 |
1992年 | 1篇 |
1991年 | 9篇 |
1990年 | 4篇 |
1989年 | 17篇 |
1988年 | 19篇 |
1987年 | 11篇 |
1986年 | 13篇 |
1985年 | 13篇 |
1984年 | 8篇 |
1983年 | 11篇 |
1982年 | 6篇 |
1981年 | 10篇 |
1980年 | 8篇 |
1979年 | 1篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1970年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有521条查询结果,搜索用时 0 毫秒
21.
The high incidence of injury in Rugby Union is well documented, particularly at elite levels of competition. This article describes the incidence and nature of all injuries sustained by elite Western Australian junior Rugby Union players during the 26 weeks up to and including the 1997 National Championship campaign. Informed consent was gained for each participant (n = 44) prior to completion of an extensive baseline questionnaire. Exposure and injury data were collected at each training session and game. The injury incidence rate over the 26 week period was 13.26/1000 player hours. Injury data were analysed by phase of play, position, severity and if occurred at games or training. The incidence of injury was significantly associated with the position played (chi2 = 67.49, p value = 0.008) and the phase of play in which the injury occurred (chi2 = 8.07, p value = 0.042). Tackling was the most dangerous phase of play (52% of injuries) and the most common site of injury was the lower limb (37%). Most injuries occurred during games (56%) and the flanker was the position most at risk of injury (12%). Further research is needed to identify the aetiology of injury at all levels of competition and to use these findings to develop effective injury prevention strategies in this sport. Position-specific risk factors should also be investigated, as should the mechanism of injury associated with tackling which is the phase of play in which significantly more injuries occur in rugby. 相似文献
22.
23.
24.
DS Wilensky G Ginsberg M Altman TH Tulchinsky F Ben Yishay J Auerbach 《Archives of disease in childhood》1996,75(2):145-148
OBJECTIVE: To examine the characteristics of infants suffering from failure to thrive in a community based cohort in Israel and to ascertain the effect of failure to thrive on their cognitive development. METHODS: By review of records maintained at maternal and child health clinics in Jerusalem and the two of Beit Shemesh, epidemiological data were obtained at age 15 months on a cohort of all babies born in 1991. For each case of failure to thrive, a matched control was selected from the same maternal and child health clinic. At age 20 months, cognitive development was measured, and at 25 months a home visit was carried out to assess maternal psychiatric status by questionnaire, and the HOME assessment was performed to assess the home environment. RESULTS: 3.9% of infants were found to have fallen below the third centile in weight for at least three months during the first year of life. Infants with failure to thrive did not differ from the general population in terms of obstetric or neonatal complications, birth order, or parents' ethnic origin, age, or years of education. The infants with failure to thrive did have lower birthweights and marginally smaller head circumferences at birth. Developmental assessment at 20 months of age showed a DQ of 99.7 v 107.2 in the matched controls, with 11.5% having a DQ below 80, as opposed to only 4.6% of the controls. No differences were found in maternal psychiatric problems as measured by a self report questionnaire. There were, however, significant differences in subscales of the HOME scale. CONCLUSIONS: (1) Infants who suffered from failure to thrive had some physiological predispositions that put them at risk; (2) failure to thrive may be an early marker of families providing suboptimal developmental stimulation. 相似文献
25.
Wound bed preparation: a systematic approach to wound management 总被引:6,自引:0,他引:6
Gregory S.Schultz PhD ; R. GarySibbald MD ; VincentFalanga MD ; Elizabeth A.Ayello PhD ; CarolineDowsett ; KeithHarding MB ChB ; MarcoRomanelli MD PhD ; Michael C.Stacey DS ; LucTeot MD PhD ; WolfgangVanscheidt MD 《Wound repair and regeneration》2003,11(S1):S1-S28
The healing process in acute wounds has been extensively studied and the knowledge derived from these studies has often been extrapolated to the care of chronic wounds, on the assumption that nonhealing chronic wounds were simply aberrations of the normal tissue repair process. However, this approach is less than satisfactory, as the chronic wound healing process differs in many important respects from that seen in acute wounds. In chronic wounds, the orderly sequence of events seen in acute wounds becomes disrupted or "stuck" at one or more of the different stages of wound healing. For the normal repair process to resume, the barrier to healing must be identified and removed through application of the correct techniques. It is important, therefore, to understand the molecular events that are involved in the wound healing process in order to select the most appropriate intervention. Wound bed preparation is the management of a wound in order to accelerate endogenous healing or to facilitate the effectiveness of other therapeutic measures. Experts in wound management consider that wound bed preparation is an important concept with significant potential as an educational tool in wound management.
This article was developed after a meeting of wound healing experts in June 2002 and is intended to provide an overview of the current status, role, and key elements of wound bed preparation. Readers will be able to examine the following issues;
• the current status of wound bed preparation;
• an analysis of the acute and chronic wound environments;
• how wound healing can take place in these environments;
• the role of wound bed preparation in the clinic;
• the clinical and cellular components of the wound bed preparation concept;
• a detailed analysis of the components of wound bed preparation.
(WOUND REP REG 2003;11:1–28) 相似文献
This article was developed after a meeting of wound healing experts in June 2002 and is intended to provide an overview of the current status, role, and key elements of wound bed preparation. Readers will be able to examine the following issues;
• the current status of wound bed preparation;
• an analysis of the acute and chronic wound environments;
• how wound healing can take place in these environments;
• the role of wound bed preparation in the clinic;
• the clinical and cellular components of the wound bed preparation concept;
• a detailed analysis of the components of wound bed preparation.
(WOUND REP REG 2003;11:1–28) 相似文献
26.
27.
Computed tomography of abdominal fatty masses 总被引:2,自引:0,他引:2
28.
Relapsing polychondritis studied by computed tomography 总被引:1,自引:0,他引:1
Computed tomographic findings in a patient with relapsing polychondritis are described. Collapse of the cartilage of the nose and calcification in cartilages of the ears were clearly demonstrated. CT scanning was also helpful in evaluating the tracheobronchial tree for airway compromise, which could prove fatal in this condition. 相似文献
29.
30.