全文获取类型
收费全文 | 9358篇 |
免费 | 429篇 |
国内免费 | 148篇 |
专业分类
耳鼻咽喉 | 65篇 |
儿科学 | 146篇 |
妇产科学 | 31篇 |
基础医学 | 505篇 |
口腔科学 | 21篇 |
临床医学 | 715篇 |
内科学 | 3220篇 |
皮肤病学 | 45篇 |
神经病学 | 71篇 |
特种医学 | 301篇 |
外科学 | 618篇 |
综合类 | 1468篇 |
预防医学 | 1939篇 |
眼科学 | 27篇 |
药学 | 600篇 |
6篇 | |
中国医学 | 89篇 |
肿瘤学 | 68篇 |
出版年
2024年 | 12篇 |
2023年 | 104篇 |
2022年 | 368篇 |
2021年 | 351篇 |
2020年 | 419篇 |
2019年 | 370篇 |
2018年 | 412篇 |
2017年 | 196篇 |
2016年 | 264篇 |
2015年 | 321篇 |
2014年 | 733篇 |
2013年 | 663篇 |
2012年 | 711篇 |
2011年 | 749篇 |
2010年 | 458篇 |
2009年 | 482篇 |
2008年 | 407篇 |
2007年 | 470篇 |
2006年 | 382篇 |
2005年 | 336篇 |
2004年 | 246篇 |
2003年 | 270篇 |
2002年 | 211篇 |
2001年 | 191篇 |
2000年 | 148篇 |
1999年 | 184篇 |
1998年 | 95篇 |
1997年 | 59篇 |
1996年 | 45篇 |
1995年 | 48篇 |
1994年 | 41篇 |
1993年 | 25篇 |
1992年 | 15篇 |
1991年 | 18篇 |
1990年 | 23篇 |
1989年 | 20篇 |
1988年 | 13篇 |
1987年 | 17篇 |
1986年 | 6篇 |
1985年 | 8篇 |
1984年 | 7篇 |
1983年 | 3篇 |
1982年 | 5篇 |
1981年 | 4篇 |
1980年 | 8篇 |
1979年 | 4篇 |
1978年 | 2篇 |
1977年 | 2篇 |
1976年 | 4篇 |
1974年 | 2篇 |
排序方式: 共有9935条查询结果,搜索用时 15 毫秒
141.
目的 分析全国各省初治涂阴肺结核病例登记现状,为评价初治涂阴肺结核病例诊断质量提供依据.方法 根据2004-2005年全国结核病防治规划报表中初治涂阴和初治涂阳肺结核病例登记资料,分析各省2年初治涂阴肺结核病例登记率变化和增长幅度;统计各省及不同地区初治涂阴与初治涂阳肺结核病例登记率;对各省初治涂阴与初治涂阳肺结核病例登记率进行直线回归分析.结果 2005年全国登记初治涂阴肺结核病例316 405例,登记率为24.27/10万,各省登记率在6.01/10万~72.17/10万;2005年登记初治涂阴病例数比2004年增加了19.9%,其中2个省登记数呈负增长,其余各省登记数增长了0.5%~62.3%;2005年全国初治涂阳病例登记率是涂阴病例登记率的1.5倍,其中23个省初治涂阳病例登记率高于涂阴病例登记率,8个省相反;初治涂阴病例占初治涂阳病人登记率的比例,京津沪地区为149.28%,非项目地区为83.6%,项目地区为50.3%;对涂阳和涂阴病例登记率进行直线回归分析,回归方程y=22.342+0.563 6x.结论 对初治涂阴肺结核患者实行免费政策后,全国涂阴肺结核病例登记率提高.但各省初治涂阴病例登记率和增长幅度以及涂阴病例登记率与涂阳病例登记率的比例悬殊.由于涂阴病例诊断困难,对于涂阴病例登记率高或增长幅度大的地区,特别在DOTS执行时间短和人力资源有限的地区,应对涂阴病例诊断质量予以进一步检查和评价. 相似文献
142.
Sahana K.S. Prakash R.M. Saldanha Supriya Kushwah Anitha S. Prabhu 《The Indian journal of tuberculosis》2018,65(3):195-199
Introduction
In spite of having BCG vaccination and tuberculosis control program for the last 50 years, prevalence of tuberculosis continues to be high in India. Inadequate diagnostic methods, suboptimal treatment and monitoring, and the lack of vigilant reporting system are some of the contributing factors for the failure of TB control.Objectives
To know the current practices among local pediatricians regarding management of TB.Materials and methods
Field based cross sectional study. All the registered pediatricians who were practicing in Mangalore, (list – local IAP branch) were included in the study. A structured Questionnaire on signs and symptoms of TB, diagnosis, strategies adopted in treatment, MDR tuberculosis and reporting of cases to RNTCP was asked. Management practice standards according to the Updated National Guidelines for Pediatric Tuberculosis in India, 2012, RNTCP guidelines in consensus with IAP, latest at the time of the study.Results
50 pediatricians participated in the study with 62% having an attachment to the teaching institution. More than 50% identified all the symptoms of TB. 64% were sending chest X-ray, Mantoux test and gastric lavage/induced sputum examination for AFB to diagnose TB. 22% were not stressing for AFB examination. Still 16% told serological tests as one of the diagnostic modality. 52% were not aware about the diagnosis of latent TB. In 16% of their cases ATT was on a trial basis. Only 52% of the clinicians are adhering to updated national (RNTCP) guidelines. 30% felt still there are drawbacks in the current RNTCP guidelines. 72% knew the correct definition of MDR tuberculosis. But only 36% of them knew the diagnostic method (gene expert/CB NAAT) of confirming the MDR TB.Conclusion
Management practices are found to be still suboptimum. Better engagement of the private sector is urgently required to improve TB management practices and to prevent diagnostic delay and drug resistance. 相似文献143.
144.
目的 分析2008—2018年广州市结核病患者就诊延迟变化趋势及影响因素,为制定防治措施提供依据。 方法 通过《中国疾病预防控制信息系统》的子系统《结核病管理信息系统》,收集2008—2018年广州市登记治疗的125201例结核病患者的信息,包括户籍、性别、年龄、民族、职业、患者来源、患者分类及并发症发生情况,采用单因素和多因素logistic回归模型分析结核病患者就诊延迟的影响因素。 结果 2008—2018年广州市结核病患者从出现症状至就诊的天数中位数(四分位数)为13(2,38)d,就诊延迟率为49.25%(61656/125201)。单因素分析结果显示,女性、年龄≥65岁、少数民族、职业为儿童、患者来源为追踪、患者分类为肺外结核、存在并发症者的就诊延迟率分别为49.98%(19951/39919)、53.60%(8323/15528)、52.05%(1128/2167)、64.66%(161/249)、53.06%(5347/10078)、56.27%(3465/6158)、63.80%(1202/1884),明显高于男性(48.90%,41705/85282)、年龄<25岁(43.99%,11493/26129)、汉族(49.20%,60528/123034)、教师/医务人员/干部(46.49%,1848/3975)、患者来源为健康检查(23.94%,643/2686)、患者分类为肺结核(48.88%,58191/119043)、无并发症者(49.02%,60454/123317),差异均有统计学意义(χ2值分别为12.60、664.34、6.96、878.51、940.21、127.79、162.12,P值分别为<0.001、<0.001、0.008、<0.001、<0.001、<0.001、<0.001)。多因素logistic回归分析结果显示,以下特征的结核病患者更容易出现就诊延迟:女性[以男性为参照,OR(95%CI)=1.11(1.08~1.13)],年龄组为25~、45~、≥65岁[以<25岁年龄组为参照,OR(95%CI)值分别为1.13(1.09~1.16)、1.37(1.32~1.42)、1.40(1.33~1.47)],少数民族[以汉族为参照,OR(95%CI)=1.22(1.12~1.33)];职业为儿童、工人/民工、农民、其他[以教师/医务人员/干部为参照,OR(95%CI)值分别为2.38(1.80~3.15)、1.17(1.10~1.26)、1.38(1.28~1.48)、1.17(1.10~1.25)],患者来源为因症就诊、因症推荐、转诊、追踪[以健康检查来源为参照,OR(95%CI)值分别为3.06(2.79~3.35)、3.27(2.83~3.77)、2.78(2.54~3.05)、3.35(3.04~3.70)],肺外结核[以肺结核为参照,OR(95%CI)=1.41(1.33~1.49)],有并发症[以无并发症为参照,OR(95%CI)=1.62(1.47~1.78)]。 结论 2008—2018年广州市结核病患者就诊延迟现象较为普遍,对上述各类就诊延迟的高危因素,需要重点加强关注。 相似文献
145.
《Vaccine》2015,33(48):6800-6808
A replication-deficient chimpanzee adenovirus expressing Ag85A (ChAdOx1.85A) was assessed, both alone and in combination with modified vaccinia Ankara also expressing Ag85A (MVA85A), for its immunogenicity and protective efficacy against a Mycobacterium tuberculosis (M.tb) challenge in mice. Naïve and BCG-primed mice were vaccinated or boosted with ChAdOx1.85A and MVA85A in different combinations. Although intranasally administered ChAdOx1.85A induced strong immune responses in the lungs, it failed to consistently protect against aerosol M.tb challenge. In contrast, ChAdOx1.85A followed by MVA85A administered either mucosally or systemically, induced strong immune responses and was able to improve the protective efficacy of BCG. This vaccination regime has consistently shown superior protection over BCG alone and should be evaluated further. 相似文献
146.
目的观察涂阳肺结核患者家庭密切接触儿童感染发病情况,探讨儿童感染者预防性治疗方法。方法将涂阳肺结核患者家庭密切接触儿童与非涂阳肺结核患者密切接触儿童感染发病情况进行比较,对儿童感染者分组给予6H、12H、3HR、2HRZ等4种不同的方案进行预防性治疗,随访观察10年发病情况。结果涂阳肺结核患者家庭密切接触儿童感染率为63.6%,非涂阳肺结核患者家庭密切接触儿童感染率为10.4%,两组差异有统计学意义(P<0.05)。儿童结核感染者预防性治疗组完成治疗率达85%以上,经10年随访患病率为2.2%(4/182),4种方案平均药物不良反应发生率为8.6%。儿童结核感染者非预防性治疗组患病率达45.2%(47/104),两组差异有统计学意义(P<0.05)。结论涂阳肺结核患者家庭密切接触儿童属于结核病高危人群。早期发现涂阳肺结核患者并给予正规的抗结核治疗,积极动员其家庭成员尤其是儿童及时进行结核病筛查,是结核病管理的一个重要环节。儿童感染者预防性治疗可减少95.1%的结核病发病,是一种可靠预防结核感染的方法,在总体减轻结核病的影响可起到关键性作用。 相似文献
147.
目的分析肺结核患者(TB)外周血单核细胞中miR-34a-5p和miR-708-5p的表达水平,并探讨其临床诊断价值。方法选取TB患者和健康对照(HD)各25例,应用Taq Man q PCR技术测定两组人群外周血单核细胞中miR-34a-5p和miR-708-5p表达水平,以U6 sn RNA作为内参。应用ROC曲线评价miR-34a-5p和miR-708-5p诊断TB的临床意义。结果 miR-34a-5p在TB患者中的表达水平为(10.08±0.68),显著高于HD的(7.67±0.36),差异有统计学意义(P<0.01);miR-708-5p在TB患者中的表达水平显著高于HD的(13.52±0.98 Vs 7.71±0.57),差异有统计学意义(P<0.01)。ROC曲线分析表明在肺结核诊断中,miR-34a-5p的敏感性、特异性分别为72%、76%;miR-708-5p的敏感性、特异性为76%、76%。结论 miR-34a-5p和miR-708-5p分子在TB患者外周血单核细胞中异常表达,对TB辅助诊断具有一定参考价值。 相似文献
148.
149.
Adam R. Aluisio Stephanie Garbern Tess Wiskel Zeta A. Mutabazi Olivier Umuhire Chin Chin Chng Kristina E. Rudd Jeanne DArc Nyinawankusi Jean Claude Byiringiro Adam C. Levine 《The American journal of emergency medicine》2018,36(11):2010-2019
Objective
To evaluate the utility of the quick Sepsis-related Organ Failure Assessment (qSOFA) score to predict risks for emergency department (ED) and hospital mortality among patients in a sub-Saharan Africa (SSA) setting.Methods
This retrospective cohort study was carried out at a tertiary-care hospital, in Kigali, Rwanda and included patients ≥15 years, presenting for ED care during 2013 with an infectious disease (ID). ED and overall hospital mortality were evaluated using multivariable regression, with qSOFA scores as the primary predictor (reference: qSOFA = 0), to yield adjusted relative risks (aRR) with 95% confidence intervals (CI). Analyses were performed for the overall population and stratified by HIV status.Results
Among 15,748 cases, 760 met inclusion (HIV infected 197). The most common diagnoses were malaria and intra-abdominal infections. Prevalence of ED and hospital mortality were 12.5% and 25.4% respectively. In the overall population, ED mortality aRR was 4.8 (95% CI 1.9–12.0) for qSOFA scores equal to 1 and 7.8 (95% CI 3.1–19.7) for qSOFA scores ≥2. The aRR for hospital mortality in the overall cohort was 2.6 (95% 1.6–4.1) for qSOFA scores equal to 1 and 3.8 (95% 2.4–6.0) for qSOFA scores ≥2. For HIV infected cases, although proportional mortality increased with greater qSOFA score, statistically significant risk differences were not identified.Conclusion
The qSOFA score provided risk stratification for both ED and hospital mortality outcomes in the setting studied, indicating utility in sepsis care in SSA, however, further prospective study in high-burden HIV populations is needed. 相似文献150.
Kira E.F. Ramdas Konstantin P. Lyashchenko Rena Greenwald Suelee Robbe-Austerman Cynthia McManis W. Ray Waters 《Emerging infectious diseases》2015,21(3):480-483
Mycobacterium bovis infection of cats is exceedingly rare in regions where bovine tuberculosis is not endemic. We describe the diagnosis and clinical management of pulmonary M. bovis infection in 2 indoor-housed cats and their association with at least 1 M. bovis–infected human in Texas, USA, in September 2012. 相似文献