全文获取类型
收费全文 | 75025篇 |
免费 | 6600篇 |
国内免费 | 2406篇 |
专业分类
耳鼻咽喉 | 826篇 |
儿科学 | 1446篇 |
妇产科学 | 861篇 |
基础医学 | 14821篇 |
口腔科学 | 1402篇 |
临床医学 | 4700篇 |
内科学 | 11604篇 |
皮肤病学 | 1791篇 |
神经病学 | 5137篇 |
特种医学 | 1192篇 |
外国民族医学 | 18篇 |
外科学 | 6285篇 |
综合类 | 8782篇 |
现状与发展 | 11篇 |
预防医学 | 3050篇 |
眼科学 | 905篇 |
药学 | 11986篇 |
3篇 | |
中国医学 | 3136篇 |
肿瘤学 | 6075篇 |
出版年
2023年 | 1345篇 |
2022年 | 1738篇 |
2021年 | 2934篇 |
2020年 | 2564篇 |
2019年 | 3135篇 |
2018年 | 3189篇 |
2017年 | 2997篇 |
2016年 | 2553篇 |
2015年 | 3083篇 |
2014年 | 4281篇 |
2013年 | 5052篇 |
2012年 | 4531篇 |
2011年 | 5284篇 |
2010年 | 4092篇 |
2009年 | 4072篇 |
2008年 | 3736篇 |
2007年 | 3457篇 |
2006年 | 3107篇 |
2005年 | 2663篇 |
2004年 | 2511篇 |
2003年 | 2075篇 |
2002年 | 1568篇 |
2001年 | 1230篇 |
2000年 | 1230篇 |
1999年 | 920篇 |
1998年 | 804篇 |
1997年 | 817篇 |
1996年 | 657篇 |
1995年 | 756篇 |
1994年 | 657篇 |
1993年 | 553篇 |
1992年 | 448篇 |
1991年 | 423篇 |
1990年 | 361篇 |
1989年 | 307篇 |
1988年 | 251篇 |
1987年 | 240篇 |
1986年 | 238篇 |
1985年 | 545篇 |
1984年 | 657篇 |
1983年 | 419篇 |
1982年 | 480篇 |
1981年 | 390篇 |
1980年 | 344篇 |
1979年 | 295篇 |
1978年 | 240篇 |
1977年 | 184篇 |
1976年 | 195篇 |
1975年 | 131篇 |
1974年 | 94篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
《Vaccine》2022,40(52):7604-7612
Background and ObjectiveVaccine uptake during pregnancy remains low. Our objectives were to describe 1) development and adaptation of a clinician communication training intervention for maternal immunizations and 2) obstetrics and gynecology (ob-gyn) clinician and staff perspectives on the intervention and fit for the prenatal care context.MethodsDesign of the Motivational Interviewing for Maternal Immunizations (MI4MI) intervention was based on similar communication training interventions for pediatric settings and included presumptive initiation of vaccine recommendations (“You’re due for two vaccines today”) combined with motivational interviewing (MI) for hesitant patients. Interviews and focus group discussions were conducted with ob-gyn clinicians and staff in five Colorado clinics including settings with obstetric physicians, certified nurse midwives (CNMs), and clinician-trainees. Participants were asked about adapting training to the ob-gyn setting and their implementation experiences. Feedback was incorporated through iterative changes to training components.ResultsInterview and focus group discussion results from participants before (n = 3), during (n = 11) and after (n = 25) implementation guided intervention development and adaptation. Three virtual, asynchronous training components were created: a video and two interactive modules. This virtual format was favored due to challenges attending group meetings; however, participants noted opportunities to practice skills through role-play were lacking. Training modules were adapted to include common challenging vaccine conversations and live-action videos. Participants liked interactive training components and use of adult learning strategies. Some participants initially resisted the presumptive approach but later found it useful after applying it in their practices. Overall, participants reported that MI4MI training fit well with the prenatal context and recommended more inclusion of non-clinician staff.ConclusionsMI4MI training was viewed as relevant and useful for ob-gyn clinicians and staff. Suggestions included making training more interactive, and including more complex scenarios and non-clinician staff. 相似文献
3.
4.
5.
6.
7.
《Health & place》2022
PurposeAccording to the social determinants of health framework, income inequality is a potential risk factor for adverse mental health. However, few studies have explored the mechanisms suspected to mediate this relationship. The current study addresses this gap through a mediation analysis to determine if social support and community engagement act as mediators linking neighbourhood income inequality to maternal anxiety and depressive symptoms within a cohort of new mothers living in the City of Calgary, Canada.MethodsData collected at three years postpartum from mothers belonging to the All Our Families (AOF) cohort were used in the current study. Maternal data were collected between 2012 and 2015 and linked to neighbourhood socioeconomic data from the 2006 Canadian Census. Income inequality was measured using Gini coefficients derived from 2006 after-tax census data. Generalized structural equation models were used to quantify the associations between income inequality and mental health symptoms, and to assess the potential direct and indirect mediating effects of maternal social support and community engagement.ResultsIncome inequality was not significantly associated with higher depressive symptoms (β = 0.32, 95%CI = −0.067, 0.70), anxiety symptoms (β = 0.11, 95%CI = −0.39, 0.60), or lower social support. Income inequality was not associated with community engagement. For the depression models, higher social support was significantly associated with lower depressive symptoms (β = −0.13, 95%CI = −0.15, −0.097), while community engagement was not significantly associated with depressive symptoms (β = 0.059, 95%CI = −0.15, 0.27). Similarly, for the anxiety models, lower anxiety symptoms were significantly associated with higher levels of social support (β = −0.17, 95%CI = −0.20, −0.13) but not with higher levels of community engagement (β = 0.14, 95%CI = −0.14, 0.41).ConclusionThe current study did not find clear evidence for social support or community engagement mediating the relationship between neighbourhood income inequality and maternal mental health. Future investigations should employ a broader longitudinal approach to capture changes in income inequality, potential mediators, and mental health symptomatology over time. 相似文献
8.
9.
10.
《Taiwanese journal of obstetrics & gynecology》2022,61(1):110-114
ObjectiveWe encountered a case of high-grade serous carcinoma (HGSC) of the ovary which recurred as carcinosarcoma of the sigmoid colon. Tumor cells of both the primary carcinoma and the secondary carcinosarcoma were negative for estrogen receptor (ER), WT-1, and PAX8. It is well known that most ovarian carcinomas arising from the Müllerian duct are immunoreactive for these biologic parameters. To our knowledge, this is the first case report that provides the results of immunohistochemical analysis of WT-1 and PAX8 for a primary carcinoma and recurrent carcinosarcoma.Case reportA 61-year-old woman had an advanced right ovarian HGSC. After a primary debulking surgery (hysterectomy, bilateral salpingo-oophorectomy and omentectomy) and adjuvant chemotherapy, complete remission was achieved. However, four and a half years later, a tumor arising beside the sigmoid colon was detected. A tumorectomy was performed through combined partial resection of the ileum and sigmoid colon. Microscopically, the tumor was diagnosed as carcinosarcoma of the sigmoid colon, which had originated from HGSC of the ovary. Interestingly, the malignant cells of the primary carcinoma and epithelial components of the recurrent carcinosarcoma were negative for ER, WT-1, and PAX8. These immunohistochemical features were unusual. Three cycles of chemotherapy with the previously used regimen and three additional cycles of doxorubicin and ifosfamide combination chemotherapy were administered. Currently, 3 years after the final chemotherapy was administered, the patient remains healthy.ConclusionHGSC of the ovary can recur as carcinosarcoma. Tumor cells of the primary HGSC without ER, WT-1, and PAX8 expression may have dedifferentiated and recurred as carcinosarcoma. 相似文献