全文获取类型
收费全文 | 340258篇 |
免费 | 23285篇 |
国内免费 | 7365篇 |
专业分类
耳鼻咽喉 | 4085篇 |
儿科学 | 9641篇 |
妇产科学 | 6740篇 |
基础医学 | 28334篇 |
口腔科学 | 8061篇 |
临床医学 | 36900篇 |
内科学 | 42676篇 |
皮肤病学 | 4631篇 |
神经病学 | 19970篇 |
特种医学 | 7947篇 |
外国民族医学 | 31篇 |
外科学 | 36253篇 |
综合类 | 50842篇 |
现状与发展 | 14篇 |
一般理论 | 29篇 |
预防医学 | 35091篇 |
眼科学 | 5289篇 |
药学 | 30358篇 |
371篇 | |
中国医学 | 30328篇 |
肿瘤学 | 13317篇 |
出版年
2023年 | 5259篇 |
2022年 | 7779篇 |
2021年 | 12731篇 |
2020年 | 12396篇 |
2019年 | 18176篇 |
2018年 | 15895篇 |
2017年 | 12778篇 |
2016年 | 10330篇 |
2015年 | 9721篇 |
2014年 | 19931篇 |
2013年 | 21577篇 |
2012年 | 18369篇 |
2011年 | 19867篇 |
2010年 | 15960篇 |
2009年 | 14685篇 |
2008年 | 14306篇 |
2007年 | 14813篇 |
2006年 | 12924篇 |
2005年 | 11242篇 |
2004年 | 9240篇 |
2003年 | 8108篇 |
2002年 | 6372篇 |
2001年 | 5673篇 |
2000年 | 4667篇 |
1999年 | 4038篇 |
1998年 | 3118篇 |
1997年 | 2969篇 |
1996年 | 2560篇 |
1995年 | 2647篇 |
1994年 | 2547篇 |
1993年 | 2064篇 |
1992年 | 2072篇 |
1991年 | 1799篇 |
1990年 | 1610篇 |
1989年 | 1421篇 |
1988年 | 1350篇 |
1987年 | 1155篇 |
1985年 | 3837篇 |
1984年 | 4846篇 |
1983年 | 3372篇 |
1982年 | 3842篇 |
1981年 | 3581篇 |
1980年 | 3187篇 |
1979年 | 2926篇 |
1978年 | 2560篇 |
1977年 | 1926篇 |
1976年 | 2163篇 |
1975年 | 1632篇 |
1974年 | 1433篇 |
1973年 | 1281篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
21.
22.
23.
《Gait & posture》2022
ObjectiveThe aim of this study was to determine whether there is a difference in postural control between nulligravida women and women who have given birth by vaginal or cesarean section.MethodsWomen who had only vaginal delivery in the previous 1–3 years were included in the vaginal delivery group (n = 27), those who had only cesarean delivery in the previous 1–3 years were included in the cesarean section group (n = 28), and those who had never given birth were included in the control group (n = 32). Evaluations were administered 6–8 days after the ovulation phase. Postural control of the participants was evaluated with the computerized dynamic posturography device.ResultsA total of 87 women with a mean age of 29.4 ± 4 years and a mean body mass index of 24.1 ± 3.1 kg/m2 were included in the study. Antero-posterior somatosensory organization test values of the vaginal delivery group were lower than the control group (p = 0.0016). The cesarean delivery group had statistically lower antero-posterior somatosensory (p < 0.001 and p = 0.0013) and medio-lateral somatosensory (p = 0.002 and p = 0.017, respectively) test scores compared to the control group and the vaginal delivery group.ConclusionsIt was observed that women who birthed with vaginal or cesarean delivery had impaired somatosensory postural control. There is definitely a need for further studies with a long-term follow-up examining the effects of postural control during pregnancy and the postpartum period. 相似文献
24.
轻度认知障碍(Mild cognition impairment, MCI)是尚未达到阿尔兹海默病(Alzheimer’s disease, AD)的诊断标准且可逆转为正常脑老化状态的最佳窗口期。情志异常、肝失疏泄(肝失疏泄日久致肝郁)已被证实为MCI的重要情志病机,且“长期负性情绪积累肝失疏泄致衰加速脑老化”的科学假说已在本课题组前期研究中得到初步证实,疏肝法干预肝郁型MCI患者疗效显著,但以上作用机制尚未得到完全阐述。因此本研究系统总结了中医学对MCI的认识,长期情绪不调肝失疏泄对MCI的影响及可能机制,疏肝解郁方药及其成分改善肝郁型MCI的可行性,并提出使用无束缚性设计的眼动技术以探索疏肝法改善肝郁型MCI的可行性,为MCI的中医药干预及其神经机制探讨提供新思路,为中医情志衰老学说增添新内涵。 相似文献
25.
《台湾医志》2022,121(9):1864-1871
26.
27.
目的探讨对前列腺癌患者采用一体化管理老年综合评估(CGA)护理模式对其心理因素和生活质量的影响。方法选取2020年3月至2021年3月在南京市第一医院就诊,确诊为前列腺癌,且首次行腹腔镜下前列腺癌根治术的患者96例,随机分为对照组、观察1组、观察2组,各32例。对照组为住院后采用常规护理模式进行护理,观察1组为入院后行CGA干预组,观察2组为一体化管理的CGA干预组。三组患者分别在干预前、出院时,进行焦虑自评量表(SAS)、抑郁自评量表(SDS)测评;在干预前、术后30 d,进行生活质量核心量表QLQ-C30(V3.0)和前列腺癌特异性补充量表QLQ-PR25测评。结果出院时,观察2组SAS、SDS评分显著优于对照组及观察1组(P<0.05);术后30 d,观察2组生活质量QLQ-C30、QLQ-PR25评分显著优于对照组及观察1组(P<0.05)。结论一体化管理CGA护理模式可有效改善前列腺癌患者的心理状态,提高其术后生活质量。 相似文献
28.
目的 探讨医院信息系统中增加住院陪护管理功能的应用效果。方法 基于互联网医院、智慧医院等信息系统,开发信息化住院陪护管理功能,包括流行病学史调查、免费核酸申请、电子陪护证办理、体温监测登记及上报和统计查询。该功能与医院智慧护理链接后全院应用。比较功能应用前和应用后的遵医嘱一患一陪达标率、有效陪护证达标率、体温监测并登记日上报达标率和陪护证使用追溯率,评价护士和管理者疫情防控管理的人均耗时以及对该管理功能的满意度。结果 应用信息化陪护管理功能后,一患一陪达标率、有效陪护证达标率、体温监测并登记日上报达标率和陪护证使用追溯率显著高于应用前(均P<0.05);护士陪护管理人均耗时从(554.13±30.77)s降至(311.67±21.54)s(P<0.05);护士和管理者对该信息化陪护管理功能的满意度显著提高(均P<0.05)。结论 信息化住院陪护管理功能的应用有效提升了疫情期间陪护的管理质量和管理效率,提高了一线护士和管理者的满意度。 相似文献
29.
30.
《Journal of the Academy of Nutrition and Dietetics》2022,122(12):2288-2294
BackgroundDental caries is the most common chronic childhood disease. Past studies revealed that grandparents provide their grandchildren with cariogenic foods and beverages (eg, those with free sugars and/or modified starches). Qualitative research can help identify what drives this phenomenon.ObjectiveOur aim was to examine mothers’ explanations for why grandparents in north central and central Appalachia give their grandchildren cariogenic foods and beverages.DesignA qualitative study on children’s oral health in Pennsylvania and West Virginia from 2018 through 2020 was performed. In-person, semi-structured interviews were conducted. Qualitative data from interviews were recorded, transcribed, and then coded using NVivo. Data analysis for this study was performed using thematic analysis with iterative theme development.Participants/settingThe participants were 126 mothers of children aged 3-5 years from West Virginia (n = 66) and Pittsburgh, PA (n = 60).Main outcome measuresMothers’ perspectives about why grandparents give their grandchildren cariogenic foods and beverages were analyzed.ResultsIn the study sample, 85% of mothers (n = 107/126) named at least 1 of their children’s grandparents as a member of their social network responsible for their children’s oral health. From these interviews, 85% of mothers (n = 91/107) discussed that grandparents gave their grandchildren cariogenic foods and beverages. The mothers described the following 4 themes to explain why grandparents gave their grandchildren cariogenic foods and beverages: privilege of the grandparent role; responsibilities of the grandparent role; symbol of care and affection; and limited consideration or understanding of the detrimental impact.ConclusionsGrandparents play a role in giving their grandchildren cariogenic foods and beverages, which could potentially contribute to childhood caries. Research is needed to develop effective social interventions to help some grandparents understand the implications of a cariogenic diet on their grandchildren’s oral health and/or decrease their provision of cariogenic foods and beverages. 相似文献