全文获取类型
收费全文 | 28619篇 |
免费 | 6091篇 |
国内免费 | 135篇 |
专业分类
耳鼻咽喉 | 872篇 |
儿科学 | 831篇 |
妇产科学 | 1005篇 |
基础医学 | 1478篇 |
口腔科学 | 2796篇 |
临床医学 | 4666篇 |
内科学 | 6500篇 |
皮肤病学 | 645篇 |
神经病学 | 2366篇 |
特种医学 | 1395篇 |
外国民族医学 | 5篇 |
外科学 | 4893篇 |
综合类 | 107篇 |
现状与发展 | 12篇 |
一般理论 | 1篇 |
预防医学 | 3257篇 |
眼科学 | 402篇 |
药学 | 736篇 |
中国医学 | 10篇 |
肿瘤学 | 2868篇 |
出版年
2024年 | 165篇 |
2023年 | 1114篇 |
2022年 | 400篇 |
2021年 | 712篇 |
2020年 | 1265篇 |
2019年 | 556篇 |
2018年 | 1421篇 |
2017年 | 1352篇 |
2016年 | 1601篇 |
2015年 | 1660篇 |
2014年 | 2093篇 |
2013年 | 2545篇 |
2012年 | 1064篇 |
2011年 | 1017篇 |
2010年 | 1543篇 |
2009年 | 2155篇 |
2008年 | 1035篇 |
2007年 | 794篇 |
2006年 | 959篇 |
2005年 | 782篇 |
2004年 | 611篇 |
2003年 | 552篇 |
2002年 | 493篇 |
2001年 | 651篇 |
2000年 | 602篇 |
1999年 | 639篇 |
1998年 | 599篇 |
1997年 | 556篇 |
1996年 | 596篇 |
1995年 | 442篇 |
1994年 | 338篇 |
1993年 | 302篇 |
1992年 | 312篇 |
1991年 | 278篇 |
1990年 | 281篇 |
1989年 | 283篇 |
1988年 | 216篇 |
1987年 | 242篇 |
1986年 | 209篇 |
1985年 | 201篇 |
1984年 | 159篇 |
1983年 | 143篇 |
1982年 | 135篇 |
1981年 | 106篇 |
1979年 | 126篇 |
1978年 | 89篇 |
1977年 | 117篇 |
1975年 | 108篇 |
1974年 | 117篇 |
1973年 | 100篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
52.
53.
Shirley L. Jones RNC MS 《Journal of obstetric, gynecologic, and neonatal nursing : JOGNN / NAACOG》1996,25(9):777-783
Advances in human genetics are rapidly changing the scope of information and care that can be provided to health care consumers. By the year 2005 it is expected that the entire human genome will be mapped and all 70,000–100,000 genes will be identified. Currently, there are more than 5,000 known single-gene disorders. With the movement of specialized health services into the primary care setting, nurses increasingly will need to be knowledgeable about genetic disorders, screening/diagnostic tests, and implications for health care. In addition, the management of genetic information raises issues of informed consent, privacy and confidentiality, truth telling and disclosure, and nondiscrimination. 相似文献
54.
55.
Andrew R. Hoellein MD Christopher A. Feddock MD Charles H. Griffith III MD MSPH John F. Wilson PhD Donald R. Barnett MD MSPH Pat F. Bass III MD MS T. Shawn Caudill MD MSPH 《Journal of general internal medicine》2004,19(5P2):562-565
Due to recent public debate and newly imposed resident work hour restrictions, we decided to investigate the relationship of resident call status to their ambulatory patients' satisfaction. Resident continuity clinic patients were asked to rate their level of satisfaction on a 10-point Likert-type scale. Using multiple regression approaches, these data were then assessed as a function of resident call status. We found that in 646 patient encounters, patient satisfaction scores were significantly less when the resident was postcall, 8.99 ± 1.8, than when not postcall, 9.31 ± 1.3. We herein discuss etiologies and implications of these findings for both patient care and medical education. 相似文献
56.
57.
58.
Kuo-Sheng Hung MD Phd Chung-Ling Liang MD Cheng-Haung Wang MD Hsueh-Wen Chang PhD Naeun Park MS Suh-Hang Hank Juo MD PhD 《Journal of clinical neuroscience》2004,11(8):849-853
Frontal intracerebral haemorrhage (ICH) is a common result of cranial trauma. Outcome differences between bilateral and unilateral frontal ICH are not well studied but would be valuable to predict prognosis in clinical practice. Two aims are proposed in this study: first to compare the risk of developing delayed ICH after bilateral or unilateral frontal ICH, and second to determine the variables helpful to predict outcome according to the Glasgow Outcome Scale (GOS). Between January 1993 and December 1997, 694 consecutive patients with traumatic ICH were admitted to the Chang Gung Medical Center within 24 h of the trauma. Patients with ICH in sites other than the frontal lobes were excluded. A total of 161 cases (mean age 46.3+/-20.3 years), including 57 bilateral (mean age 52.5+/-18.7 years) and 104 unilateral (mean age 42.9+/-20.5 years) traumatic frontal ICH were studied. Twenty-eight of 57 patients (49%) with bifrontal ICH versus 17 of 104 patients (16%) with unilateral frontal ICH had a further, delayed ICH. In 42 of 45 patients (93%) with delayed ICH, this occurred within 5 days of the initial trauma. Multivariate logistic regression was used to select significant predictors of outcome. We found that delayed ICH (p<0.001), age (p=0.004) and mechanism of injury (p=0.001) explained the worse outcome in patients with bifrontal ICH. The best-fitting logistic regression model included three variables: delayed ICH (p=0.011), initial GCS (p=0.023), and a sum score of clinical and radiological variables (p=0.003). Bifrontal ICH tended to occur in older patients after a fall and was associated with a higher risk of developing delayed ICH or brain stem compression compared to unilateral ICH damage. Using these three variables - delayed ICH, initial GCS, and the sum score - in a logistical regression model is useful to predict outcome in patients with traumatic frontal ICH and may aid patient management. 相似文献
59.
Differential Stripping: Determination of the Amount of Topically Applied Substances Penetrated into the Hair Follicles 下载免费PDF全文
Alexa Teichmann Ute Jacobi Michael Ossadnik† Heike Richter Stefan Koch† Wolfram Sterry Jürgen Lademann 《Journal of general internal medicine》2005,20(5):264-269
The determination of penetration pathways of topically applied substances into the skin is the subject of several investigations. Recently, follicular penetration has become a major focus of interest. To date, a direct, non-invasive quantification of the amount of topically applied substance penetrated into the follicles had not been possible. The development of such a method was the aim of this study. Therefore, the advantages of both stripping techniques, tape stripping and cyanoacrylate skin surface biopsy, were combined and evaluated. Tape stripping was used to remove the part of the stratum corneum that contained the topically applied dye. Subsequently, the follicular contents were ripped off by cyanoacrylate skin surface biopsy. The combined method termed "differential stripping" was evaluated in vitro and in vivo , and the amount of topically applied fluorescent dye penetrated into the hair follicles was quantified after different penetration times. After 30 min, 5% of the recovered concentration of sodium fluorescein was found in the follicular infundibula, where it was still detectable after 48 h. Altogether, the results of this investigation revealed that differential stripping is a new method that can be used to study the penetration of topically applied substances into the follicular infundibula non-invasively and selectively. 相似文献
60.