全文获取类型
收费全文 | 8011篇 |
免费 | 517篇 |
国内免费 | 32篇 |
专业分类
耳鼻咽喉 | 55篇 |
儿科学 | 265篇 |
妇产科学 | 126篇 |
基础医学 | 938篇 |
口腔科学 | 170篇 |
临床医学 | 721篇 |
内科学 | 1928篇 |
皮肤病学 | 87篇 |
神经病学 | 361篇 |
特种医学 | 120篇 |
外国民族医学 | 1篇 |
外科学 | 764篇 |
综合类 | 399篇 |
一般理论 | 4篇 |
预防医学 | 1026篇 |
眼科学 | 195篇 |
药学 | 835篇 |
中国医学 | 105篇 |
肿瘤学 | 460篇 |
出版年
2023年 | 102篇 |
2022年 | 361篇 |
2021年 | 493篇 |
2020年 | 237篇 |
2019年 | 295篇 |
2018年 | 264篇 |
2017年 | 214篇 |
2016年 | 233篇 |
2015年 | 234篇 |
2014年 | 301篇 |
2013年 | 411篇 |
2012年 | 653篇 |
2011年 | 603篇 |
2010年 | 307篇 |
2009年 | 251篇 |
2008年 | 402篇 |
2007年 | 374篇 |
2006年 | 357篇 |
2005年 | 344篇 |
2004年 | 294篇 |
2003年 | 279篇 |
2002年 | 227篇 |
2001年 | 157篇 |
2000年 | 134篇 |
1999年 | 130篇 |
1998年 | 59篇 |
1997年 | 69篇 |
1996年 | 46篇 |
1995年 | 36篇 |
1994年 | 25篇 |
1993年 | 31篇 |
1992年 | 70篇 |
1991年 | 57篇 |
1990年 | 46篇 |
1989年 | 55篇 |
1988年 | 44篇 |
1987年 | 26篇 |
1986年 | 40篇 |
1985年 | 37篇 |
1984年 | 26篇 |
1983年 | 20篇 |
1982年 | 19篇 |
1981年 | 14篇 |
1980年 | 18篇 |
1979年 | 23篇 |
1978年 | 14篇 |
1977年 | 13篇 |
1975年 | 15篇 |
1973年 | 16篇 |
1972年 | 13篇 |
排序方式: 共有8560条查询结果,搜索用时 15 毫秒
1.
Alexander E. J. Trevatt David R. Thomson Robert Miller Matthew Colquhoun Akinyemi I. Idowu Shakeel Rahman 《Journal of plastic surgery and hand surgery》2019,53(2):97-104
Academic output is just one aspect of a successful career as a plastic surgeon. However, for those with a strong interest in academia, the academic output of a department will likely be a key factor when deciding how to rank jobs. The aim of this study was to quantify and rank the academic output of plastic surgery units across the UK and Ireland. The Institute for Scientific Information (ISI) Web of Science Bibliometric analysis tool was used to collate cumulative (1950–2016), 10 year (2006–2016) and 3 years (2013–2015) research output data for plastic surgery units in the UK and Ireland. Sixty-six plastic surgery units were identified. Departments were ranked for each time period according to the number of papers produced, number of citations (Nc) and h-index (a measure of the impact of scientific output). The top 3 departments for number of papers in the last 10 years were The Royal Free Hospital, London (226) Broomfield Hospital, Chelmsford (218), and Morriston Hospital and Swansea (188). The top 3 for h-number were The Royal Free Hospital (21) Wythenshawe Hospital, Manchester (18) and Morriston Hospital (17). Academic output varies across plastic surgery units in the UK and Ireland. A number of departments have consistently maintained high academic outputs across the years and will be of interest to surgeons hoping to pursue a career in academia. 相似文献
2.
Tinghu Kang Yang Li Jiandong Guo Xingwen Ma Fatema Akhter Hiramoni Md Zahir Ahmed Mary C. Jobe Oli Ahmed 《International Journal of Mental Health Promotion, The》2022,24(2):207-217
The aim of the study was to explore the relationship between college graduates’ dual self-consciousness, job search
clarity and perceived stress, and reveal the mediating role of perceived stress between dual self-consciousness and
job search clarity. In this study, 467 college graduates were investigated using the Dual Self-Consciousness Scale,
Job Search Clarity Scale, and Perceived Stress Scale. After controlling for gender, age, and region, the results
revealed that: (1) private self-consciousness has a significant positive predictive effect on job search clarity; (2)
perceived stress has a significant negative predictive effect on job search clarity; (3) perceived stress plays partial
mediation effects between private self-consciousness and job search clarity; (4) perceived stress plays complete
mediation effects between public self-consciousness and job search clarity; (5) perceived stress has suppressing
effects between public self-consciousness and job search clarity. 相似文献
3.
4.
Perianal mucinous adenocarcinoma is a rare tumour which may be associated with long‐standing chronic perianal sepsis. Early diagnosis is challenging and is based on a high index of clinical suspicion and specific histological features. Definitive treatment is surgical, in the form of an abdomino‐perineal resection. We hereby describe a case of a perianal mucinous adenocarcinoma arising from long‐standing recurrent perianal fistula and complement this with a brief review of the literature pertaining in particular to the management of this condition. 相似文献
5.
Zhao-Jin Chen Mamun Al-Mahtab Salimar Rahman Ngiap-Chuan Tan Nan Luo Bee-Choo Tai 《Quality of life research》2010,19(9):1343-1348
Purpose
Hepatitis B virus (HBV) is endemic in Bangladesh, and the quality of life (QoL) of these patients remains unknown as there is no instrument available in the native language. In this study, we translated the 56-item Hepatitis Quality of Life Questionnaire (HQLQ) into Bengali and evaluated its validity and reliability. 相似文献6.
Maninder S Kalkat Ishtiaq Rahman Kostas Kotidis Ben Davies Robert S Bonser 《European journal of cardio-thoracic surgery》2007,32(2):250-254
BACKGROUND: In Marfan's syndrome, there is a paucity of data regarding intervention criteria for surgery of the dissected thoraco-abdominal aorta. METHODS: A retrospective analysis of 22 Marfan's patients with distal aortic dissection managed between September 1999 and April 2006 was performed. Serial diameters and linear expansion rates were calculated from imaging studies and the outcome of intervention was analysed. RESULTS: There were 14/22 male patients (median age 38 years), and 18 had prior aortic surgery. Surgery was recommended in 20 patients and undertaken in 19 (1 died prior to operation). Of the operated patients, 2 presented with rupture, 2 with airway obstruction, 1 with intermittent paraplegia and 14 underwent planned surgery for increased expansion rate or pain. All patients had residual type A or chronic type B dissection. The median aortic dimension at surgery was 6.7 cm (interquartile range (IQR) 5.5-8.2). The preoperative mean expansion rate increased from 0.5 cm/year to 1.7 cm/year (p<0.001), prior to operation. Fifteen patients underwent Crawford Extent II, two underwent Extent I and two underwent Extent III repair. Profound hypothermia and CSF drainage was used in 16 and 18 patients, respectively. There was no early mortality, paraplegia or renal failure. At a median postoperative follow-up of 56 months (range 6-86), the survival of the operated cohort was 90%. CONCLUSIONS: Thoraco-abdominal aortic aneurysm repair in Marfan's syndrome can be performed with good outcomes. Intervention should be based on size or accelerated expansion. Any role of endovascular management needs careful consideration. 相似文献
7.
A. Rahman 《International archives of occupational and environmental health》1988,60(6):425-429
The present paper is based on the results of a study conducted to examine whether there are any differences in sleep quality between permanent day workers and rotating shift workers working under two- and three-shift systems. Influences of demographic variables such as subjects' age and experience on sleep were also explored. The subjects studied consisted of 125 permanent day workers, 125 fortnightly rotating two-shift workers, and 50 weekly rotating three-shift workers. The method of data collection was that of field study through questionnaire. The results show that, compared to the permanent day workers, sleep quality is poorer for the rotating shift workers and, between the two groups of shift workers, it is poorer for the three-shift workers. These findings imply that a discontinuous two-shift system (without night work) is more convenient than a continuous three-shift system (including night work). 相似文献
8.
Md. Kabirul Islam 《Indian journal of pediatrics》2002,69(10):819-820
An interesting case of a child with a tail is reported. The child had a tail like structure in the back since birth, increasing
with age. It was 20 cm. long, the longest tail so far described in the English literature. There was no functional complain.
The result was excellent after excision as the problem was only cosmetic. 相似文献
9.
A Rahman H L Komiskey W L Hayton W P Weisenburger 《Drug metabolism and disposition》1986,14(3):299-302
The brain levels of diazepam and its metabolites after a single iv injection of diazepam were measured over a 2-hr time period in young (3-4-month-old), mature (12-15-month-old), and senescent (29-31-month-old) male Fischer 344 rats. The areas under the brain level time curves were used as an index of exposure. Senescent rats were exposed to significantly more diazepam, N-desmethyldiazepam, and oxydiazepam between 0 and 120 min after an injection of 180 micrograms/kg of diazepam than the young or mature animals. The unbound plasma level failed to adequately account for the age-related increase in brain exposure to diazepam. Mechanisms other than the unbound diazepam in plasma are probably involved in eliciting the age-associated increase in brain levels of diazepam and its metabolites. 相似文献
10.