全文获取类型
收费全文 | 137022篇 |
免费 | 8791篇 |
国内免费 | 2904篇 |
专业分类
耳鼻咽喉 | 1746篇 |
儿科学 | 3110篇 |
妇产科学 | 4345篇 |
基础医学 | 20495篇 |
口腔科学 | 3814篇 |
临床医学 | 11504篇 |
内科学 | 24793篇 |
皮肤病学 | 2617篇 |
神经病学 | 8894篇 |
特种医学 | 4721篇 |
外国民族医学 | 14篇 |
外科学 | 18703篇 |
综合类 | 8273篇 |
一般理论 | 36篇 |
预防医学 | 9688篇 |
眼科学 | 3368篇 |
药学 | 12155篇 |
15篇 | |
中国医学 | 1768篇 |
肿瘤学 | 8658篇 |
出版年
2022年 | 1075篇 |
2021年 | 1922篇 |
2020年 | 1246篇 |
2019年 | 1689篇 |
2018年 | 2316篇 |
2017年 | 1729篇 |
2016年 | 1791篇 |
2015年 | 2279篇 |
2014年 | 2917篇 |
2013年 | 3293篇 |
2012年 | 4890篇 |
2011年 | 5275篇 |
2010年 | 3128篇 |
2009年 | 2758篇 |
2008年 | 4409篇 |
2007年 | 4600篇 |
2006年 | 4555篇 |
2005年 | 4107篇 |
2004年 | 3607篇 |
2003年 | 3347篇 |
2002年 | 3134篇 |
2001年 | 7149篇 |
2000年 | 7377篇 |
1999年 | 6127篇 |
1998年 | 2155篇 |
1997年 | 1663篇 |
1996年 | 1204篇 |
1995年 | 1120篇 |
1992年 | 3879篇 |
1991年 | 3946篇 |
1990年 | 3663篇 |
1989年 | 3652篇 |
1988年 | 3516篇 |
1987年 | 3349篇 |
1986年 | 3168篇 |
1985年 | 3017篇 |
1984年 | 2071篇 |
1983年 | 1810篇 |
1982年 | 993篇 |
1979年 | 1916篇 |
1978年 | 1191篇 |
1977年 | 989篇 |
1975年 | 1193篇 |
1974年 | 1360篇 |
1973年 | 1413篇 |
1972年 | 1358篇 |
1971年 | 1248篇 |
1970年 | 1138篇 |
1969年 | 1121篇 |
1968年 | 1024篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
11.
M. Simons R. Kimble S. McPhail Z. Tyack 《Burns : journal of the International Society for Burn Injuries》2019,45(8):1792-1809
BackgroundThe measurement of health-related quality of life (HRQoL) provides information about the perceived burden of the health condition and treatments from a lived experience. The Brisbane Burn Scar Impact Profile (caregiver report for young children, BBSIP0–8), developed in 2013, is a proxy-report measure of burn scar-specific HRQoL. The aim of this study was to report its psychometric properties in line with an evaluative purpose.MethodsCaregivers of children up to 8 years of age at risk of burn scarring were recruited into a prospective, longitudinal cohort study. Caregivers completed the BBSIP0–8, Pediatric Quality of Life Inventory and Patient Observer Scar Assessment Scale at baseline (approximately ≥85% of the total body surface area re-epithelialised), 1–2 weeks after baseline and 1-month after baseline. Psychometric properties measured included internal consistency, test–retest reliability, validity and responsiveness.ResultsEighty-six caregivers of mostly male children (55%), of a median age (IQR) of 1 year, 10 months (2 years, 1 month) and total body surface area burn of 1.5% (3.0%) were recruited. Over one third of participants were grafted and 15% had contractures or skin tightness at baseline. Internal consistency of ten item groups ranged from 0.73 to 0.96. Hypothesised correlations of changes in the BBSIP0–8 items with changes in criterion measures supported longitudinal validity (ρ ranging from ?0.73 to 0.68). The majority of item groups had acceptable reproducibility (ICC = 0.65–0.83). The responsiveness of five item groups was supported (AUC = 0.71–0.90).ConclusionThe psychometric properties tested support the use of the BBSIP0–8 as an evaluative measure of burn scar-related health-related quality of life for children aged below eight years in the early post-acute period of rehabilitation. Further investigation at longer time period after burn injury is indicated. 相似文献
12.
13.
目的观察25-羟维生素D3(Vit D3)对2型糖尿病(T2DM)患者早期肾损害的临床疗效。方法纳入T2DM早期肾损伤患者80例,采用随机数字表法等分为治疗组与对照组,对照组继续原有降糖方案,治疗组在既往用药基础上,肌肉注射Vit D3注射液,疗程均为10个月,治疗结束后进行疗效评价。结果 1与治疗前相比,治疗组糖化血红蛋白(HbA1c)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)水平上调,微量白蛋白(MA)、β2-微球蛋白(β2-M)及肾脏损伤分子-1(KIM-1)水平下调,治疗组低于对照组差异有统计学意义(P<0.05)。2与治疗前相比,治疗组治疗后Vit D3水平上调,治疗组高于对照组差异有统计学意义(P<0.01)。3T2DM患者Vit D3水平与MA(r=-0.432),β2-M(r=-0.615),及KIM-1(r=-0.763)水平均呈负相关(P<0.05)。结论 Vit D3可有效减轻T2DM患者的早期肾损害,对肾脏具有保护作用。 相似文献
14.
A. AbuKaraky M. Al Mousa O.A. Samara Z.H. Baqain 《International journal of oral and maxillofacial surgery》2021,50(6):798-800
Pseudoaneurysms in the external carotid artery system are rare, mostly reported in the superficial temporal and facial arteries. The bilateral sagittal split osteotomy has a low incidence of complications requiring emergency interventions. We report the case of a patient with acute bleeding from a pseudoaneurysm of the inferior alveolar artery diagnosed by angiography and treated successfully by super-selective embolization. 相似文献
15.
Laurie Lovett Novak Jonathan Wanderer David A. Owens Daniel Fabbri Julian Z. Genkins Thomas A. Lasko 《Applied clinical informatics》2021,12(1):164
Background The data visualization literature asserts that the details of the optimal data display must be tailored to the specific task, the background of the user, and the characteristics of the data. The general organizing principle of a concept-oriented display is known to be useful for many tasks and data types. Objectives In this project, we used general principles of data visualization and a co-design process to produce a clinical display tailored to a specific cognitive task, chosen from the anesthesia domain, but with clear generalizability to other clinical tasks. To support the work of the anesthesia-in-charge (AIC) our task was, for a given day, to depict the acuity level and complexity of each patient in the collection of those that will be operated on the following day. The AIC uses this information to optimally allocate anesthesia staff and providers across operating rooms. Methods We used a co-design process to collaborate with participants who work in the AIC role. We conducted two in-depth interviews with AICs and engaged them in subsequent input on iterative design solutions. Results Through a co-design process, we found (1) the need to carefully match the level of detail in the display to the level required by the clinical task, (2) the impedance caused by irrelevant information on the screen such as icons relevant only to other tasks, and (3) the desire for a specific but optional trajectory of increasingly detailed textual summaries. Conclusion This study reports a real-world clinical informatics development project that engaged users as co-designers. Our process led to the user-preferred design of a single binary flag to identify the subset of patients needing further investigation, and then a trajectory of increasingly detailed, text-based abstractions for each patient that can be displayed when more information is needed. 相似文献
16.
我国奶牛养殖规模不断扩大,奶业产值比重逐步提高,给奶牛疫病防治带来巨大压力。奶牛乳房炎及细菌性肺炎等呼吸系统疾病和细菌性肠炎等消化系统疾病最为常见,抗菌药物的使用成为主要防治手段。但抗菌药物的不当使用易使细菌产生耐药性,增加临床治疗的成本和难度,危害我国奶牛产业发展。本文对截至2021年7月我国和美国、英国、日本、欧盟批准用于奶牛的抗菌药物产品进行整理、统计与分析,包括抗菌药物的分类、剂型以及适应证等,旨在为我国奶牛用抗菌药物管理、合理用药和新兽药开发提供参考。 相似文献
17.
19.
20.