全文获取类型
收费全文 | 5329篇 |
免费 | 366篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 93篇 |
儿科学 | 108篇 |
妇产科学 | 80篇 |
基础医学 | 724篇 |
口腔科学 | 606篇 |
临床医学 | 475篇 |
内科学 | 1014篇 |
皮肤病学 | 120篇 |
神经病学 | 312篇 |
特种医学 | 134篇 |
外科学 | 686篇 |
综合类 | 23篇 |
一般理论 | 2篇 |
预防医学 | 686篇 |
眼科学 | 62篇 |
药学 | 354篇 |
中国医学 | 41篇 |
肿瘤学 | 192篇 |
出版年
2023年 | 57篇 |
2022年 | 103篇 |
2021年 | 234篇 |
2020年 | 166篇 |
2019年 | 163篇 |
2018年 | 225篇 |
2017年 | 157篇 |
2016年 | 185篇 |
2015年 | 211篇 |
2014年 | 272篇 |
2013年 | 366篇 |
2012年 | 436篇 |
2011年 | 467篇 |
2010年 | 266篇 |
2009年 | 193篇 |
2008年 | 269篇 |
2007年 | 278篇 |
2006年 | 253篇 |
2005年 | 210篇 |
2004年 | 200篇 |
2003年 | 165篇 |
2002年 | 130篇 |
2001年 | 87篇 |
2000年 | 58篇 |
1999年 | 64篇 |
1998年 | 26篇 |
1997年 | 19篇 |
1996年 | 16篇 |
1995年 | 9篇 |
1994年 | 21篇 |
1993年 | 10篇 |
1992年 | 39篇 |
1991年 | 40篇 |
1990年 | 24篇 |
1989年 | 27篇 |
1988年 | 33篇 |
1987年 | 26篇 |
1986年 | 9篇 |
1985年 | 21篇 |
1984年 | 15篇 |
1983年 | 17篇 |
1982年 | 12篇 |
1980年 | 9篇 |
1979年 | 19篇 |
1978年 | 10篇 |
1977年 | 7篇 |
1976年 | 11篇 |
1973年 | 8篇 |
1971年 | 8篇 |
1969年 | 10篇 |
排序方式: 共有5712条查询结果,搜索用时 31 毫秒
71.
72.
73.
74.
Bruno Felipe Gaia Lucas Rodrigues Pinheiro Otávio Shoite Umetsubo Oseas Santos Jr. Felipe Ferreira Costa Marcelo Gusmão Paraíso Cavalcanti 《The British journal of oral & maxillofacial surgery》2014
Our purpose was to compare the accuracy and reliability of linear measurements for Le Fort I osteotomy using volume rendering software. We studied 11 dried skulls and used cone-beam computed tomography (CT) to generate 3-dimensional images. Linear measurements were based on craniometric anatomical landmarks that were predefined as specifically used for Le Fort I osteotomy, and identified twice each by 2 radiologists, independently, using Dolphin imaging version 11.5.04.35. A third examiner then made physical measurements using digital calipers. There was a significant difference between Dolphin imaging and the gold standard, particularly in the pterygoid process. The largest difference was 1.85 mm (LLpPtg L). The mean differences between the physical and the 3-dimensional linear measurements ranged from −0.01 to 1.12 mm for examiner 1, and 0 to 1.85 mm for examiner 2. Interexaminer analysis ranged from 0.51 to 0.93. Intraexaminer correlation coefficients ranged from 0.81 to 0.96 and 0.57 to 0.92, for examiners 1 and 2, respectively. We conclude that the Dolphin imaging should be used sparingly during Le Fort I osteotomy. 相似文献
75.
76.
Clinical features and factors associated with non‐carious cervical lesions and dentin hypersensitivity
下载免费PDF全文
![点击此处可从《Journal of oral rehabilitation》网站下载免费的PDF全文](/ch/ext_images/free.gif)
K. T. Yoshizaki L. F. Francisconi‐dos‐Rios M. A. P. Sobral A. C. C. Aranha F. M. Mendes T. Scaramucci 《Journal of oral rehabilitation》2017,44(2):112-118
Determining the factors associated with NCCLs and DH in populations could guide the implementation of specific preventive measures. This study evaluated the clinical features and factors associated with non‐carious cervical lesions (NCCLs) and dentin hypersensitivity (DH) in a Brazilian population. The participants were 118 patients at the Dentistry Clinic of our dental school. They completed an interview to obtain personal information and determine the possible factors associated with NCCLs and DH. Clinical examination was undertaken to record the NCCLs, shape of the lesion and certain occlusal factors. DH was diagnosed by air and probe tests. Data were analysed with the multilevel Poisson regression and prevalence ratios, and the respective 95% confidence intervals were calculated. The prevalence of NCCLs and DH among patients was 67·8% and 51·7%, respectively. Of a total number of 2902 teeth examined, 9·65% had NCCLs and 5·82% were sensitive to air. The most affected teeth for both conditions were the premolars. Most of the NCCLs were wedge‐shaped and located in the maxilla. The factors associated with NCCLs and DH were age and presence of premature occlusal contacts. NCCLs were also significantly associated with consumption of wine and alcoholic beverages, and DH with consumption of acidic fruits and juices. NCCLs were a common finding, with higher frequency in more advanced age groups, the maxilla and premolars. A significant association occurred between NCCLs, premature contacts and consumption of wine and alcoholic beverages. DH was associated with NCCLs, premature contacts and with the consumption of acidic fruits and juices. 相似文献
77.
78.
Karen S. Mitchell Stephanie Y. Wells Adell Mendes Patricia A. Resick 《Journal of traumatic stress》2012,25(5):535-542
Eating disorders and posttraumatic stress disorder (PTSD) are debilitating conditions that frequently co‐occur. Although the two disorders have different clinical presentations, they share associated features, including cognitive disturbances, emotion dysregulation, dissociation, and impulsivity. We hypothesized that reductions in PTSD symptoms following cognitive processing therapy (CPT) and its treatment components (CPT without the written account or the written account only) would be associated with improvements in symptoms common to PTSD and eating disorders. Participants in the current investigation included women with PTSD (N = 65) who reported a history of rape or physical assault, were in a randomized dismantling study of CPT, and completed the Eating Disorder Inventory‐2 (EDI‐2) at pre‐ and posttreatment. Latent growth modeling results indicated that decreases in PTSD symptom scores were significantly associated with reductions in the Impulse Regulation, Interoceptive Awareness, Interpersonal Distrust, Ineffectiveness, and Maturity Fears subscales of the EDI‐2. Thus, PTSD treatment affected symptoms shared by PTSD and eating disorders. Currently, there are no clear guidelines for treatment of comorbid PTSD and eating disorders. Traditional CPT may impact symptoms common to both, but additional therapy may be needed for specific disordered eating attitudes and behaviors. 相似文献
79.
80.