全文获取类型
收费全文 | 980446篇 |
免费 | 81765篇 |
国内免费 | 9845篇 |
专业分类
耳鼻咽喉 | 13764篇 |
儿科学 | 26107篇 |
妇产科学 | 27305篇 |
基础医学 | 138082篇 |
口腔科学 | 27426篇 |
临床医学 | 91100篇 |
内科学 | 183723篇 |
皮肤病学 | 18319篇 |
神经病学 | 76447篇 |
特种医学 | 39269篇 |
外国民族医学 | 241篇 |
外科学 | 148379篇 |
综合类 | 43205篇 |
现状与发展 | 26篇 |
一般理论 | 268篇 |
预防医学 | 74223篇 |
眼科学 | 24066篇 |
药学 | 76922篇 |
115篇 | |
中国医学 | 7555篇 |
肿瘤学 | 55514篇 |
出版年
2021年 | 10747篇 |
2019年 | 9190篇 |
2018年 | 11324篇 |
2017年 | 9360篇 |
2016年 | 9871篇 |
2015年 | 12788篇 |
2014年 | 17424篇 |
2013年 | 22650篇 |
2012年 | 31274篇 |
2011年 | 33271篇 |
2010年 | 19636篇 |
2009年 | 17640篇 |
2008年 | 28805篇 |
2007年 | 30817篇 |
2006年 | 30748篇 |
2005年 | 30398篇 |
2004年 | 27941篇 |
2003年 | 26846篇 |
2002年 | 25303篇 |
2001年 | 38567篇 |
2000年 | 39342篇 |
1999年 | 33956篇 |
1998年 | 11334篇 |
1997年 | 10620篇 |
1996年 | 9994篇 |
1995年 | 9427篇 |
1994年 | 8947篇 |
1992年 | 27729篇 |
1991年 | 27057篇 |
1990年 | 26435篇 |
1989年 | 25401篇 |
1988年 | 23838篇 |
1987年 | 23429篇 |
1986年 | 22170篇 |
1985年 | 21482篇 |
1984年 | 16600篇 |
1983年 | 14142篇 |
1982年 | 8952篇 |
1979年 | 16835篇 |
1978年 | 12162篇 |
1977年 | 10210篇 |
1976年 | 9362篇 |
1975年 | 10190篇 |
1974年 | 12693篇 |
1973年 | 12171篇 |
1972年 | 11554篇 |
1971年 | 10706篇 |
1970年 | 10230篇 |
1969年 | 9922篇 |
1968年 | 8907篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
Kara S. Tanaka MD Veronica R. Andaya BA Steven W. Thorpe MD Kenneth R. Gundle MD James B. Hayden MD Yee-Cheen Duong MD Raffi S. Avedian MD David G. Mohler MD Lee J. Morse MD Melissa N. Zimel MD Richard J. O'Donnell MD Andrew Fang MD Robert Lor Randall MD Tina H. Tran BS Christin New BA Rosanna L. Wustrack MD other members of Study Group FORCE 《Journal of surgical oncology》2023,127(1):148-158
12.
Boffa Joseph W. Tock Jamie L. Morabito Danielle M. Schmidt Norman B. 《Cognitive therapy and research》2022,46(5):1016-1029
Cognitive Therapy and Research - Despite interest in psychological inflexibility as a marker of suicide risk, no measure of psychological inflexibility specific to SI exists. The present study... 相似文献
13.
14.
Victoria L. Parker Matthew C. Winter John A. Tidy Barry W. Hancock Julia E. Palmer Naveed Sarwar Baljeet Kaur Katie McDonald Xianne Aguiar Kamaljit Singh Nick Unsworth Imran Jabbar Allan A. Pacey Robert F. Harrison Michael J. Seckl 《International journal of cancer. Journal international du cancer》2023,152(5):986-997
Gestational trophoblastic neoplasia (GTN) patients are treated according to the eight-variable International Federation of Gynaecology and Obstetrics (FIGO) scoring system, that aims to predict first-line single-agent chemotherapy resistance. FIGO is imperfect with one-third of low-risk patients developing disease resistance to first-line single-agent chemotherapy. We aimed to generate simplified models that improve upon FIGO. Logistic regression (LR) and multilayer perceptron (MLP) modelling (n = 4191) generated six models (M1-6). M1, all eight FIGO variables (scored data); M2, all eight FIGO variables (scored and raw data); M3, nonimaging variables (scored data); M4, nonimaging variables (scored and raw data); M5, imaging variables (scored data); and M6, pretreatment hCG (raw data) + imaging variables (scored data). Performance was compared to FIGO using true and false positive rates, positive and negative predictive values, diagnostic odds ratio, receiver operating characteristic (ROC) curves, Bland-Altman calibration plots, decision curve analysis and contingency tables. M1-6 were calibrated and outperformed FIGO on true positive rate and positive predictive value. Using LR and MLP, M1, M2 and M4 generated small improvements to the ROC curve and decision curve analysis. M3, M5 and M6 matched FIGO or performed less well. Compared to FIGO, most (excluding LR M4 and MLP M5) had significant discordance in patient classification (McNemar's test P < .05); 55-112 undertreated, 46-206 overtreated. Statistical modelling yielded only small gains over FIGO performance, arising through recategorisation of treatment-resistant patients, with a significant proportion of under/overtreatment as the available data have been used a priori to allocate primary chemotherapy. Streamlining FIGO should now be the focus. 相似文献
15.
Forgiveness has been found one substantial element in the recovery for women survivors from intimate partner violence following the termination of the abusive relationship. To further investigate the details of forgiveness in this specific context, the present study explored the process of forgiveness using grounded theory. In-depth and semi-structured interviews were conducted with 25 Chinese women survivors of IPV. The findings suggest that forgiveness is a strength-based process including empowerment, transformation, and integration phases. In the empowerment phase, survivors obtain strength at the intrapersonal, behavioural, and interpersonal levels. In the transformation phase, survivors complete cognitive transformation for their IPV experiences and emotional transformation towards former partners. In the integration phase, survivors—now freed from the past—reflect upon and apply the changes they have undergone. Two trajectories in the process were found. One trajectory is going through stages sequentially and the other trajectory is experiencing back and forth between empowerment and transformation stages before moving into the integration stage. The study's findings broaden our knowledge of the strength-based forgiveness process that women survivors of IPV undergo during recovery. Practitioners and policymakers could develop programmes and policies that support forgiveness by holistically facilitating their recovery and empowerment like assistance in dealing with life difficulties and promoting their reconnection with social networks. To improve the transferability and validity of the findings, the forgiveness of survivors of IPV could be explored in a diverse sample (e.g., survivors with low educational background or live in the rural area). 相似文献
16.
17.
Phoebe Hammer Kevin White Stephanie Mengden Vessy Korcheva Philipp W. Raess 《Journal of cutaneous pathology》2019,46(5):343-346
Cutaneous leiomyomas are rare benign smooth‐muscle tumors. These lesions are distinguished based on their cell of origin and are subclassified as pilar leiomyoma, angioleiomyoma, and genital‐type leiomyoma. Nipple leiomyoma is the least common genital‐type leiomyoma, arising from the dartoic muscle cell of the nipple. Histologic examination of the lesion is necessary for definitive diagnosis, and these uncommon tumors can pose a diagnostic challenge. We describe herein a series of six nipple leiomyomas with a spectrum of histologic appearances. 相似文献
18.
19.
20.