全文获取类型
收费全文 | 32341篇 |
免费 | 3447篇 |
国内免费 | 1253篇 |
专业分类
耳鼻咽喉 | 558篇 |
儿科学 | 408篇 |
妇产科学 | 302篇 |
基础医学 | 2075篇 |
口腔科学 | 634篇 |
临床医学 | 10793篇 |
内科学 | 2666篇 |
皮肤病学 | 115篇 |
神经病学 | 2527篇 |
特种医学 | 1520篇 |
外国民族医学 | 2篇 |
外科学 | 2927篇 |
综合类 | 4790篇 |
现状与发展 | 1篇 |
一般理论 | 3篇 |
预防医学 | 3776篇 |
眼科学 | 383篇 |
药学 | 1462篇 |
312篇 | |
中国医学 | 1360篇 |
肿瘤学 | 427篇 |
出版年
2024年 | 160篇 |
2023年 | 824篇 |
2022年 | 1524篇 |
2021年 | 2142篇 |
2020年 | 2193篇 |
2019年 | 1643篇 |
2018年 | 1528篇 |
2017年 | 1594篇 |
2016年 | 1400篇 |
2015年 | 1316篇 |
2014年 | 2681篇 |
2013年 | 3574篇 |
2012年 | 2026篇 |
2011年 | 1942篇 |
2010年 | 1600篇 |
2009年 | 1356篇 |
2008年 | 1356篇 |
2007年 | 1314篇 |
2006年 | 1099篇 |
2005年 | 872篇 |
2004年 | 699篇 |
2003年 | 674篇 |
2002年 | 560篇 |
2001年 | 465篇 |
2000年 | 369篇 |
1999年 | 273篇 |
1998年 | 221篇 |
1997年 | 202篇 |
1996年 | 186篇 |
1995年 | 161篇 |
1994年 | 118篇 |
1993年 | 110篇 |
1992年 | 136篇 |
1991年 | 84篇 |
1990年 | 69篇 |
1989年 | 52篇 |
1988年 | 61篇 |
1987年 | 52篇 |
1986年 | 40篇 |
1985年 | 44篇 |
1984年 | 52篇 |
1983年 | 38篇 |
1982年 | 43篇 |
1981年 | 35篇 |
1980年 | 29篇 |
1979年 | 22篇 |
1978年 | 20篇 |
1977年 | 20篇 |
1976年 | 14篇 |
1975年 | 14篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
目的 分析不同特征的结直肠癌患者就医行为选择在中医院(含中西医结合医院)、西医院及肿瘤专科医院间的差异,为合理引导结直肠癌患者适宜就医及制订相关政策提供依据。方法 收集北京地区2018年1月-2019年12月17家三级甲等医院21894例首诊结直肠癌成年住院患者的病案首页数据,采用EmpowerStats 2.0对数据进行描述性分析。结果 21894例结直肠癌患者中就诊于中医院的有862例(3.93%),西医院的有8723例(39.85%),肿瘤专科医院的有12309例(56.22%)。对于不同医疗机构,男性占比均大于女性,58-68岁患者占比最大。且结直肠癌患者年龄、医疗付款方式及肿瘤分期在不同医疗机构间的分布存在差异(P<0.001)。西医院及肿瘤专科医院结直肠癌Ⅲ期患者占比最大,而就诊于中医院患者中结直肠癌Ⅳ期最多。从地域分布来看,异地就诊比例(57.32%)大于本地,且就诊于肿瘤专科医院的患者中73.66%来自外地。患者来源前三名分别是北京市、河北省及内蒙古自治区。而在北京市内,西医院患者主要来源于朝阳区、海淀区及西城区,中医院患者主要来源于海淀区、朝阳区及丰台区,肿瘤专科医院则主要来源于朝阳区、海淀区及丰台区。结论 应大力倡导年轻以及早期结直肠癌患者向中医院分流,充分施展中医药在结直肠癌患者中的治疗优势;发挥三级医院带动作用,建立对口帮扶医院,减少不必要的跨省流动及提倡结直肠癌的早筛早治,以降低结直肠癌死亡率。 相似文献
3.
4.
Peter Düking Christoph Zinner Jennifer L. Reed Hans-Christer Holmberg Billy Sperlich 《Scandinavian journal of medicine & science in sports》2020,30(12):2291-2304
Monitoring variations in the functioning of the autonomic nervous system may help personalize training of runners and provide more pronounced physiological adaptations and performance improvements. We systematically reviewed the scientific literature comparing physiological adaptations and/or improvements in performance following training based on responses of the autonomic nervous system (ie, changes in heart rate variability) and predefined training. PubMed, SPORTDiscus, and Web of Science were searched systematically in July 2019. Keywords related to endurance, running, autonomic nervous system, and training. Studies were included if they (a) involved interventions consisting predominantly of running training; (b) lasted at least 3 weeks; (c) reported pre- and post-intervention assessment of running performance and/or physiological parameters; (d) included an experimental group performing training adjusted continuously on the basis of alterations in HRV and a control group; and (e) involved healthy runners. Five studies involving six interventions and 166 participants fulfilled our inclusion criteria. Four HRV-based interventions reduced the amount of moderate- and/or high-intensity training significantly. In five interventions, improvements in performance parameters (3000 m, 5000 m, Loadmax, Tlim) were more pronounced following HRV-based training. Peak oxygen uptake () and submaximal running parameters (eg, LT1, LT2) improved following both HRV-based and predefined training, with no clear difference in the extent of improvement in . Submaximal running parameters tended to improve more following HRV-based training. Research findings to date have been limited and inconsistent. Both HRV-based and predefined training improve running performance and certain submaximal physiological adaptations, with effects of the former training tending to be greater. 相似文献
5.
《肿瘤代谢与营养电子杂志》2019,6(1):53-57
目的 探讨单孔加一孔腹腔镜手术联合 ERAS 治疗高位直肠及乙状结肠癌的近期疗效。方法 回顾性分析 2017 年 11 月至2018 年 10 月在福建省肿瘤医院胃肠肿瘤外科进行加速康复外科干预的 92 例高位直肠及乙状结肠癌患者资料,根 据手术方式的不同,分为单孔加一孔手术联合快速康复外科组39 例及常规腹腔镜手术联合ERAS 组 53 例,对比两组围术 期情况。结果 两组患者基线资料无明显统计学差异(P > 0.05),且在手术时间、出血量、上下切缘、清扫淋巴结数量及 并发症方面无明显统计学差异(P > 0.05)。但单孔加一孔手术联合ERAS 组较常规手术联合ERAS 组,总切口长度更短 [(6.7±1.1)cm 比(8.5±1.3)cm,P=0.000],术后首次下床时间更早 [(22.2±5.2)h 比(27.1±7.9)h,P=0.001],首次排便 时间更早[(70.2±19.8)h比(83.1±20.4)h,P=0.005],术后第一天C反应蛋白值更低[(43.5±28.6)mg/L比(57.2±33.2) mg/L,P=0.038],术后住院时间更短 [(7.0±1.7)d 比(8.1±2.1)d,P=0.010],且术后 2~4 天疼痛评分更低(P < 0.05)。 结论 经验丰富的腔镜医师采用单孔加一孔手术治疗高位直肠及乙状结肠癌并联合 ERAS 干预是安全可行的,且单孔加一孔 手术可减低操作难度,具有疼痛轻、术后恢复快等优势,值得临床推广。 相似文献
6.
Olga A. Klein Avril Drummond Jacqueline R. Mhizha-Murira Laura Mansford Roshan dasNair 《Neuropsychological rehabilitation》2019,29(4):491-512
While previous randomised controlled trials and meta-analyses offer only limited evidence for the effectiveness of cognitive rehabilitation, qualitative studies examining patient perspectives report more positive outcomes. This meta-synthesis of qualitative studies examined patient perspectives of cognitive rehabilitation for memory, attention, and executive function problems in people with multiple sclerosis. Using set eligibility criteria, we screened electronic databases, reference lists, and academic networks for relevant papers. Seven papers (195 participants) were selected. Two independent researchers conducted quality appraisals of papers. Data analysis, guided by the thematic synthesis approach, yielded six main themes. These suggested that patients benefitted from the group environment in rehabilitation. Cognitive rehabilitation facilitated the participants’ reflection and awareness of their cognitive deficits, and was associated with increased knowledge and understanding of their illness. Increased strategy use was reported and associated with improvements in cognitive functioning and greater confidence and perseverance. Participants reported emotional and social improvements, and felt more optimistic. Overall, these changes had a positive impact on participants’ quality of life. This synthesis of qualitative studies indicates that people with multiple sclerosis who experience cognitive deficits benefit from cognitive rehabilitation programmes. This finding must, however, be viewed in light of the limitations of this meta-synthesis. The meta-synthesis was registered in the PROSPERO database under CRD42017040148. 相似文献
7.
《Surgery (Oxford)》2020,38(10):596-600
Improving Surgical Training is a programme piloting an innovative, evidence-based approach to training. It was developed in response to the Shape of Training report which reviewed postgraduate training and recommended changes in medical education to meet the demands of the modern NHS. A series of initiatives have been developed to enhance the experience for surgical trainees not only to encourage a more focussed and supported method, but also to improve their job satisfaction. The initiatives have combined a greater emphasis on time for training provided by trainers with allocated time for training with multidisciplinary teamworking and the use of technology enhanced learning with simulation of both technical and non-technical skills. The pilot started in 2018 with core training in general surgery and has been expanded to include vascular surgery, urology and trauma and orthopaedics over the last 2 years. Initial feedback from both trainees, trainers and schools of surgery have identified different challenges to aid implementation. The programme is being very carefully evaluated by an independent company as well as careful oversight by the General Medical Council which are paramount to its success. 相似文献
8.
9.
目的调查镇江市各医院护士分层培训及分层进阶的方法及现状。方法2018年4—5月间采用自行设计的调查问卷,对全市医院的护理人员进行随机抽样调查。结果调查显示镇江市96.45%的护士受医院分层培训及分层进阶这一模式的管理。其中N1占16.77%,N2占29.5%,N3占41.9%,N4占8.7%,其他占3.11%。有24.53%的护士对医院目前的分层培训方式感到满意并认为无需改进,40.99%的护士表示满意,但需要改进,29.19%的护士表示基本满意,需要改进,5.28%的护士表示不满意需要较大改进。95.82%的医院科室对不用层级的护士有不同的核心能力要求并根据不同核心能力要求进行培训。结论护士分层培训几分层进阶这一管理模式在镇江各医院都有体现,但各医院实行的方式有较大差异,配套的管理方式也有待完善。 相似文献
10.