全文获取类型
收费全文 | 56915篇 |
免费 | 3272篇 |
国内免费 | 531篇 |
专业分类
耳鼻咽喉 | 395篇 |
儿科学 | 1573篇 |
妇产科学 | 885篇 |
基础医学 | 4430篇 |
口腔科学 | 680篇 |
临床医学 | 4498篇 |
内科学 | 7793篇 |
皮肤病学 | 737篇 |
神经病学 | 1892篇 |
特种医学 | 2347篇 |
外科学 | 6247篇 |
综合类 | 12799篇 |
一般理论 | 9篇 |
预防医学 | 9475篇 |
眼科学 | 644篇 |
药学 | 3712篇 |
57篇 | |
中国医学 | 1295篇 |
肿瘤学 | 1250篇 |
出版年
2024年 | 74篇 |
2023年 | 636篇 |
2022年 | 1289篇 |
2021年 | 1803篇 |
2020年 | 1601篇 |
2019年 | 3464篇 |
2018年 | 3140篇 |
2017年 | 2141篇 |
2016年 | 1371篇 |
2015年 | 1378篇 |
2014年 | 3599篇 |
2013年 | 3123篇 |
2012年 | 3537篇 |
2011年 | 3552篇 |
2010年 | 2875篇 |
2009年 | 2436篇 |
2008年 | 2288篇 |
2007年 | 2054篇 |
2006年 | 1895篇 |
2005年 | 1325篇 |
2004年 | 1069篇 |
2003年 | 871篇 |
2002年 | 673篇 |
2001年 | 549篇 |
2000年 | 523篇 |
1999年 | 467篇 |
1998年 | 368篇 |
1997年 | 359篇 |
1996年 | 286篇 |
1995年 | 268篇 |
1994年 | 207篇 |
1993年 | 117篇 |
1992年 | 99篇 |
1991年 | 83篇 |
1990年 | 59篇 |
1989年 | 68篇 |
1988年 | 61篇 |
1985年 | 904篇 |
1984年 | 1435篇 |
1983年 | 1143篇 |
1982年 | 1133篇 |
1981年 | 1137篇 |
1980年 | 982篇 |
1979年 | 861篇 |
1978年 | 678篇 |
1977年 | 480篇 |
1976年 | 650篇 |
1975年 | 565篇 |
1974年 | 478篇 |
1973年 | 440篇 |
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
51.
目的了解上海市黄浦区社会办医疗美容机构的管理人员和医师对《医疗美容管理办法》相关内容的掌握情况,发现存在的问题并提出改善建议.方法采用现场调查与现场问卷调查相结合的方式,对在上海市黄浦区开展医疗美容科目的所有社会办医疗机构(共计38家)进行全覆盖现场调查,并对其中的管理人员41人、相关医师31人进行问卷调查.结果38家社会办医疗美容机构中,美容外科和美容皮肤科的开展率较高,分别为96.8%和97.2%,而美容牙科开展率为52.4%,美容中医科开展率最低(25.0%).管理人员关于非主诊医师可在主诊医师指导下工作的知晓率仅68.3%.关于美容外科、皮肤科、中医科、牙科主诊医师应具备的工作年限,管理人员答对率为90.2%,医师答对率为72.0%,二者有显著性差异(P<0.05).结论社会办医疗美容机构中的二级科目设置需进一步优化,以减少资源空置.应加强对医疗机构管理人员和医师的法律培训,改变经营模式,制定明确的准入与退出机制,从而减少违法违规行为的发生. 相似文献
52.
53.
《Taiwanese journal of obstetrics & gynecology》2020,59(6):865-871
ObjectiveClinical outcomes of 500 high-intensity focused ultrasound (HIFU)-treated uterine fibroids and adenomyosis are analyzed and presented.Materials and methodsThis is a retrospective cross-sectional analysis from a single tertiary medical center. From April 2015 to October 2018, 546 cases were enrolled for the study. After excluding 46 patients with less than 3 months of follow-up period, there were 404 fibroids, 149 adenomyosis and 53 mixed conditions entered for analysis. The patients’ uterine fibroids and adenomyosis were treated by HIFU according to Chongqing Haifu protocol, with 12 cm diameter transducer of focal length 10–16 cm at 0.8 or 1.6 MHz T2-weight MRI imaging was rendered prior to and 3 month post treatment to assess lesion volume change using non-perfusion volume, which was the primary outcome. Secondary outcomes including quality of life, subjective satisfaction, adverse events and pregnancy rate were determined using self-reported questionnaires. The mean follow up period ranged from 3 to 38 months with an average of 21 months.ResultsThree months after HIFU-treated uterine fibroids and adenomyosis, the lesion size reduced 40.2% and 46.3%, respectively. Symptoms all improved with better quality of life for the fibroid group, while those with adenomyosis or combined diseases benefit the most from pain control. Serum CA125 decreased significantly for all studied groups, and LDH only showed improvement for fibroids group. Number of adverse events is comparable to Chongqing data (approximately 10.2%), with mostly mild and self-resolving conditions. No permanent sequelae or death was documented. Twelve pregnancies are reported in this cohort.ConclusionHIFU is safe and effective in treating uterine fibroids and adenomyosis. The results are reproducible if standardized treatment schedules are followed. It is a promising treatment alternative with the advantages of precision, non-invasiveness, rapid recovery and readiness for pregnancy. 相似文献
54.
55.
《中国中医基础医学杂志》2020,(4):542-544
全国名中医、孟河医派传人单兆伟教授擅长胃肠病诊治,临证擅用《金匮要略》温经汤治疗女性肾虚型泄泻。认为温经汤的主要适应证是肝肾虚寒型的女性腹泻和(或)月经不调,肝脾肾三脏虚寒、寒凝而瘀、虚瘀相因、寒热错杂是温经汤证的病机特点,泄下清谷、脉象沉细或细涩、舌质淡黯有齿痕或瘀点是温经汤的主要应用指证。 相似文献
56.
目的: 应用文献计量学方法,分析国内外医用粘胶相关性皮肤损伤(Medical adhesive-related skin injuries,MARSI)文献的研究主题和热点。方法: 检索Cochrane Library、PubMed、EMbase、Web of science、sinoMed、CNKI、Wanfang、VIP等数据库MARSI相关文献,检索时限为建库至2019年5月。采用SPSS 22.0 软件进行文献计量分析,利用gCLUTO统计对国内外高频主题词进行聚类分析。结果: 共纳入论文103篇,其中外文文献占总文献量的27.18%,中文文献占总文献量的72.82%。聚类分析将国内外高频主题词聚为4大类,依次为皮肤损伤及损伤类型、相关危险因素、风险评估及风险管理、护理干预措施。结论: MARSI仍是国内外研究的热点,其发病机制研究仍处于探索阶段,目前尚缺乏有效的预防策略,研究领域较局限。在今后的研究中,应加强MARSI预防的研究、注重多学科合作。 相似文献
57.
58.
59.
Nabila Brahmi-Chendouh Simona Piccolella Giuseppina Crescente Francesca Pacifico Lila Boulekbache Sabrina Hamri-Zeghichi Salah Akkal Khodir Madani Severina Pacifico 《Yao wu shi pin fen xi = Journal of food and drug analysis.》2019,27(3):692-702
Nowadays, advanced extraction techniques and highly sensitive metabolic profiling methods are effectively employed to get new information on plant chemical constituents. Among them wild medicinal plants or their parts, with large and ancient use in folk medicine, are investigated for their potential functional use and cultivation. In this context, Inula viscosa leaves engaged our attention. A simple experimental design, based on Soxhlet extraction and chromatographic fractionation, allowed us to obtain the investigated polyphenol fraction (IvE). UHPLC-HRMS analyses revealed shikimoyl depsides of caffeic acid and unusual dihydrobenzofuran lignans as main secondary metabolites. These compounds, together with cinchonain-type phenols, and hydroxycinnamoyl flavonol glycosides, are reported for the first time in inula. Overall, forty-three secondary metabolites were identified. The extract exerted a remarkable antiradical activity towards DPPH? and ABTS+?. Furthermore, it was able to inhibit cell viability and mitochondrial redox activity of neuroblastoma, hepatoblastoma and colon carcinoma cells, whereas it did not affect cell density of HaCaT cells immortalized human keratinocytes. As detected by the oxidant-sensing probe 2′,7′-dichlorodihydrofluorescein diacetate, the inhibitory responses seemed to be related to IvE-induced increase of intracellular reactive oxygen species (ROS). The obtained results highlighted that inula leaves, nowadays even undervalued and unexplored, could be considered a renewable source of nutraceutical compounds. 相似文献
60.