全文获取类型
收费全文 | 11859篇 |
免费 | 1014篇 |
国内免费 | 96篇 |
专业分类
耳鼻咽喉 | 13篇 |
儿科学 | 89篇 |
妇产科学 | 923篇 |
基础医学 | 812篇 |
口腔科学 | 101篇 |
临床医学 | 1687篇 |
内科学 | 1357篇 |
皮肤病学 | 140篇 |
神经病学 | 338篇 |
特种医学 | 136篇 |
外国民族医学 | 1篇 |
外科学 | 980篇 |
综合类 | 1252篇 |
现状与发展 | 3篇 |
一般理论 | 2篇 |
预防医学 | 3649篇 |
眼科学 | 15篇 |
药学 | 706篇 |
13篇 | |
中国医学 | 128篇 |
肿瘤学 | 624篇 |
出版年
2024年 | 20篇 |
2023年 | 193篇 |
2022年 | 261篇 |
2021年 | 521篇 |
2020年 | 541篇 |
2019年 | 506篇 |
2018年 | 467篇 |
2017年 | 467篇 |
2016年 | 520篇 |
2015年 | 392篇 |
2014年 | 731篇 |
2013年 | 1388篇 |
2012年 | 720篇 |
2011年 | 723篇 |
2010年 | 587篇 |
2009年 | 573篇 |
2008年 | 558篇 |
2007年 | 522篇 |
2006年 | 440篇 |
2005年 | 406篇 |
2004年 | 351篇 |
2003年 | 307篇 |
2002年 | 266篇 |
2001年 | 251篇 |
2000年 | 215篇 |
1999年 | 157篇 |
1998年 | 156篇 |
1997年 | 140篇 |
1996年 | 103篇 |
1995年 | 65篇 |
1994年 | 58篇 |
1993年 | 42篇 |
1992年 | 43篇 |
1991年 | 39篇 |
1990年 | 30篇 |
1989年 | 20篇 |
1988年 | 20篇 |
1987年 | 28篇 |
1986年 | 14篇 |
1985年 | 22篇 |
1984年 | 26篇 |
1983年 | 16篇 |
1982年 | 9篇 |
1981年 | 13篇 |
1980年 | 8篇 |
1979年 | 9篇 |
1978年 | 5篇 |
1977年 | 10篇 |
1976年 | 6篇 |
1967年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
12.
To increase the overall rate of breastfeeding initiation and duration, factors involved in a mother's decision to breastfeed must be identified. Self‐objectification in the context of breastfeeding was a concept selected for exploring factors associated with negative views of breastfeeding. A concept analysis following the eight‐step Walker & Avant method provides clarity and context to the concept of self‐objectification in the context of breastfeeding. The antecedents of self‐objectification in the context of breastfeeding include living in a culture of sexualization and objectification of women and the internalization of the values of objectification. Attributes of self‐objectification in the context of breastfeeding are a prioritization of physical appearance attributes of the breast over the health benefits of breastfeeding and a preoccupation with physical appearance. Consequences include negative views toward breastfeeding initiation, duration, and public breastfeeding. A concept analysis on self‐objectification in the context of breastfeeding will provide definition and clarity to this phenomenon, lend to theory and measurement, and add literature to the sociocultural factors impacting breastfeeding decisions. 相似文献
13.
Jacob Ruiter-Ligeti Michael H. Dahan Naama Steiner Alexander Volodarsky-Perel William Buckett 《Journal of assisted reproduction and genetics》2020,37(12):3103
PurposeThe aim of this study was to determine how female age at the end of the reproductive spectrum effects success of natural cycle intrauterine insemination (IUI) or IUI in combination with ovarian stimulation.MethodsWe performed a retrospective cohort study of women 43 years of age and older at the time of IUI in a single academic fertility center between January 2011 and March 2018. Primary outcomes were both pregnancies and live births per cycle of IUI. Data are presented as percentage or mean ± SD. Fisher exact and chi-squared analyses were performed.ResultsThere were 9334 IUI cycles conducted during the study period. Of these cycles, 325 IUIs (3.5%) were for women aged 43 years and over at the time of insemination (43.6 ± 0.8, range 43 to 47 years). Analysis of these 325 IUI cycles revealed 5 biochemical pregnancies (1.5%) and only 1 live birth (0.3%). The pregnancy rate did not differ between IUIs using donor sperm (N = 1/49, 2.0%) compared to IUIs with partner sperm (N = 4/276, 1.4%). The pregnancy rate did not differ between IUIs with gonadotropins (N = 2/211, 0.9%), clomiphene or letrozole (N = 2/78, 2.6%), or natural cycle (N = 1/36, 2.8%).ConclusionsThe use of intrauterine inseminations in women 43 years of age and older is an ineffective treatment strategy. This is irrespective of the use of ovarian stimulation or donor sperm. Costly gonadotropin injections did not increase the chance of pregnancy nor did oral medication when compared to natural cycle IUIs. 相似文献
14.
15.
16.
17.
18.
余春姣 《中国继续医学教育》2020,(6):196-198
目的研究地中海贫血孕妇实施产科综合护理模式的护理配合措施及效果。方法选择78例于我院检查地中海贫血孕妇,纳入时间为2017年5月-2018年5月,采用随机数字表法将其分为综合护理组与对照组,每组均39例。其中对照组采用常规护理形式,综合护理组行产科综合护理模式,对比综合护理组与对照组护理前后心理状态评估指标及家属的护理满意度。结果护理前综合护理组与对照组患者心理状态评估指标差异无统计学意义(P>0.05),与对照组(76.92%)相比,护理后综合护理组焦虑指标、抑郁指标更低,综合护理组孕妇及家属的护理满意度(94.87%)较高(P<0.05)。结论通过综合护理模式可提升地中海贫血孕妇护理满意度,并改善其心理状态。 相似文献
19.
20.
Jennifer L. Brown Lisa B. Haddad Nicole K. Gause Sarah Cordes Cecilia Bess Caroline C. King 《Women & health》2019,59(3):305-317
This study qualitatively examined factors that influenced contraceptive choices in a sample of young, HIV-infected women. Individual qualitative interviews were conducted among 30 vertically and horizontally HIV-infected women (n = 26 African American) from the ages of 14 to 24 years (Mean age = 20.9 years). We recruited sample groups with the following characteristics: (a) current contraceptive/condom use with ≥1 child (n = 11); (b) current contraceptive/condom use with no children (n = 12); and (c) no current contraceptive/condom use with no children (n = 7). A semi-structured interview guide was used to ask participants about factors influencing past and current contraceptive choices. Individual interviews were digitally recorded and transcribed verbatim; analyses to identify core themes were informed by the Grounded Theoretical approach. Young, HIV-infected women did not identify their HIV serostatus or disease-related concerns as influential in their contraceptive decisions. However, they reported that recommendations from health-care providers and input from family and friends influenced their contraceptive choices. They also considered a particular method’s advantages (e.g., menstrual cycle improvements) and disadvantages (e.g., increased pill burden) when selecting a method. Findings suggested that HIV-infected young women’s contraceptive decisions were influenced by factors other than those related to their infection. 相似文献