全文获取类型
收费全文 | 142939篇 |
免费 | 9680篇 |
国内免费 | 893篇 |
专业分类
耳鼻咽喉 | 1707篇 |
儿科学 | 4001篇 |
妇产科学 | 2379篇 |
基础医学 | 19641篇 |
口腔科学 | 2449篇 |
临床医学 | 13751篇 |
内科学 | 30523篇 |
皮肤病学 | 2256篇 |
神经病学 | 13445篇 |
特种医学 | 5139篇 |
外国民族医学 | 1篇 |
外科学 | 20261篇 |
综合类 | 1765篇 |
现状与发展 | 1篇 |
一般理论 | 161篇 |
预防医学 | 11426篇 |
眼科学 | 3847篇 |
药学 | 10349篇 |
1篇 | |
中国医学 | 537篇 |
肿瘤学 | 9872篇 |
出版年
2023年 | 727篇 |
2022年 | 1483篇 |
2021年 | 3048篇 |
2020年 | 1792篇 |
2019年 | 2904篇 |
2018年 | 3399篇 |
2017年 | 2548篇 |
2016年 | 3144篇 |
2015年 | 3831篇 |
2014年 | 5195篇 |
2013年 | 6894篇 |
2012年 | 10403篇 |
2011年 | 10927篇 |
2010年 | 6180篇 |
2009年 | 5602篇 |
2008年 | 9296篇 |
2007年 | 9645篇 |
2006年 | 9096篇 |
2005年 | 9017篇 |
2004年 | 8367篇 |
2003年 | 7724篇 |
2002年 | 7388篇 |
2001年 | 1437篇 |
2000年 | 1135篇 |
1999年 | 1416篇 |
1998年 | 1581篇 |
1997年 | 1336篇 |
1996年 | 1030篇 |
1995年 | 1004篇 |
1994年 | 845篇 |
1993年 | 832篇 |
1992年 | 712篇 |
1991年 | 672篇 |
1990年 | 579篇 |
1989年 | 552篇 |
1988年 | 562篇 |
1987年 | 530篇 |
1986年 | 454篇 |
1985年 | 525篇 |
1984年 | 582篇 |
1983年 | 550篇 |
1982年 | 710篇 |
1981年 | 624篇 |
1980年 | 551篇 |
1979年 | 396篇 |
1978年 | 371篇 |
1977年 | 379篇 |
1976年 | 305篇 |
1975年 | 285篇 |
1974年 | 291篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Evelyne Harkemanne Jean‐Louis Dargent Pierre‐Paul Roquet‐Gravy Audrey Bulinckx 《Pediatric dermatology》2019,36(3):365-367
We report a case of benign lymphoplasmacytic plaque (LPP) in a child. These asymptomatic erythematous papulonodular lesions are an emerging clinicopathological entity. Herein, we describe a previously unreported site for LPP lesions, namely, the volar wrist and the distal ipsilateral palm. 相似文献
5.
Breanne E. Kunstler Jill L. Cook Joanne L. Kemp Paul D. O’Halloran Caroline F. Finch 《Journal of Science and Medicine in Sport》2019,22(1):2-10
Objectives
To determine: (i) the behaviour change techniques used by a sample of Australian physiotherapists to promote non-treatment physical activity; and (ii) whether those behaviour change techniques are different to the techniques used to encourage adherence to rehabilitation exercises.Design
Cross-sectional survey.Method
An online self-report survey was advertised to private practice and outpatient physiotherapists treating patients with musculoskeletal conditions. The use of 50 behaviour change techniques were measured using five-point Likert-type scale questions.Results
Four-hundred and eighty-six physiotherapists responded to the survey, with 216 surveys fully completed. Most respondents (85.1%) promoted non-treatment physical activity often or all of the time. Respondents frequently used 29 behaviour change techniques to promote non-treatment physical activity or encourage adherence to rehabilitation exercises. A similar number of behaviour change techniques was frequently used to encourage adherence to rehabilitation exercises (n = 28) and promote non-treatment physical activity (n = 26). Half of the behaviour change techniques included in the survey were frequently used for both promoting non-treatment physical activity and encouraging adherence to rehabilitation exercises (n = 25). Graded tasks was the most, and punishment was the least, frequently reported technique used to promote non-treatment physical activity and encourage adherence to rehabilitation exercises.Conclusions
Respondents reported using similar behaviour change techniques to promote non-treatment physical activity and encourage adherence to rehabilitation exercises. The variability in behaviour change technique use suggests the behaviour the physiotherapist is promoting influences their behaviour change technique choice. Including the frequently-used behaviour change techniques in non-treatment physical activity promotion interventions might improve their efficacy. 相似文献6.
7.
8.
9.
In this paper, we introduce a new type of troubled-cell indicator to improve
hybrid weighted essentially non-oscillatory (WENO) schemes for solving the hyperbolic conservation laws. The hybrid WENO schemes selectively adopt the high-order
linear upwind scheme or the WENO scheme to avoid the local characteristic decompositions and calculations of the nonlinear weights in smooth regions. Therefore,
they can reduce computational cost while maintaining non-oscillatory properties in
non-smooth regions. Reliable troubled-cell indicators are essential for efficient hybrid
WENO methods. Most of troubled-cell indicators require proper parameters to detect
discontinuities precisely, but it is very difficult to determine the parameters automatically. We develop a new troubled-cell indicator derived from the mean value theorem
that does not require any variable parameters. Additionally, we investigate the characteristics of indicator variable; one of the conserved properties or the entropy is considered as indicator variable. Detailed numerical tests for 1D and 2D Euler equations are
conducted to demonstrate the performance of the proposed indicator. The results with
the proposed troubled-cell indicator are in good agreement with pure WENO schemes.
Also the new indicator has advantages in the computational cost compared with the
other indicators. 相似文献
10.
Kun‐Yong Sung Seungkoo Lee Yeonjin Jeong Sang‐Yeul Lee 《The Australasian journal of dermatology》2021,62(1):60-63
A classic pilomatricoma, which usually presents with an asymptomatic, solitary, firm, subcutaneous nodule in the head, neck, or extremities of the paediatric population, is easily diagnosed based on its characteristic clinical and histopathological features. However, its variants often pose particular diagnostic challenges to clinicians due to their rarity and diverse clinicopathological features. We present a new pseudocystic variant, manifesting as solid lesions floating in a fluid‐filled sac. 相似文献