全文获取类型
收费全文 | 8300篇 |
免费 | 745篇 |
国内免费 | 393篇 |
专业分类
耳鼻咽喉 | 140篇 |
儿科学 | 197篇 |
妇产科学 | 132篇 |
基础医学 | 1005篇 |
口腔科学 | 123篇 |
临床医学 | 1028篇 |
内科学 | 1241篇 |
皮肤病学 | 51篇 |
神经病学 | 369篇 |
特种医学 | 433篇 |
外国民族医学 | 1篇 |
外科学 | 800篇 |
综合类 | 1061篇 |
现状与发展 | 4篇 |
一般理论 | 2篇 |
预防医学 | 706篇 |
眼科学 | 207篇 |
药学 | 805篇 |
8篇 | |
中国医学 | 436篇 |
肿瘤学 | 689篇 |
出版年
2024年 | 30篇 |
2023年 | 110篇 |
2022年 | 303篇 |
2021年 | 365篇 |
2020年 | 310篇 |
2019年 | 280篇 |
2018年 | 297篇 |
2017年 | 276篇 |
2016年 | 303篇 |
2015年 | 381篇 |
2014年 | 474篇 |
2013年 | 483篇 |
2012年 | 674篇 |
2011年 | 737篇 |
2010年 | 419篇 |
2009年 | 333篇 |
2008年 | 408篇 |
2007年 | 432篇 |
2006年 | 389篇 |
2005年 | 396篇 |
2004年 | 273篇 |
2003年 | 259篇 |
2002年 | 230篇 |
2001年 | 154篇 |
2000年 | 134篇 |
1999年 | 170篇 |
1998年 | 89篇 |
1997年 | 81篇 |
1996年 | 64篇 |
1995年 | 70篇 |
1994年 | 59篇 |
1993年 | 40篇 |
1992年 | 39篇 |
1991年 | 53篇 |
1990年 | 46篇 |
1989年 | 47篇 |
1988年 | 29篇 |
1987年 | 29篇 |
1986年 | 28篇 |
1985年 | 28篇 |
1984年 | 9篇 |
1983年 | 10篇 |
1981年 | 9篇 |
1980年 | 7篇 |
1979年 | 6篇 |
1978年 | 7篇 |
1975年 | 6篇 |
1974年 | 14篇 |
1973年 | 6篇 |
1971年 | 6篇 |
排序方式: 共有9438条查询结果,搜索用时 31 毫秒
991.
992.
Parasitology Research - Mosquito adults usually need to ingest sugar from nectar host plants to sustain their metabolic needs. Mosquitoes could be differentially attracted by various flowering... 相似文献
993.
994.
早期康复护理对脑卒中患者生活质量的影响 总被引:5,自引:4,他引:5
目的 观察早期康复护理措施对脑卒中患者生活质量的影响。方法 将100例脑卒中患者随机分为常规治疗组和康复护理组,每组50例。康复护理组在常规药物治疗的基础上予早期康复护理;常规治疗组给予常规药物治疗。评定护理前后2组患者神经功能缺损程度、日常生活能力和躯体运动能力得分。运用t检验进行统计学分析。结果 经治疗及护理后,康复护理组神经功能缺损程度评分低于常规治疗组,日常生活能力和躯体运动能力评分均高于常规治疗组。结论 早期康复护理干预有利于脑卒中患者神经功能的改善和日常生活能力及躯体运动能力的恢复。 相似文献
995.
目的初步探索3D腹腔镜在胆道手术中的临床效果。方法回顾性分析2015年1月-2016年6月在该院接受腹腔镜胆囊切除+胆总管探查手术治疗的胆道结石患者38例,其中3D腹腔镜手术16例,2D腹腔镜22例,比较分析两组患者手术时间、出血量、术后腹腔引流量,术后引流时间、术后住院时间、住院费用和并发症等的差异。结果 3D组患者手术时间及出血量均优于2D组(P0.05),两组患者术后引流量、术后引流时间、术后住院时间、住院费用和并发症差异无统计学意义(P0.05)。2D组有1例患者出现结石残留,术后2个月行经T管窦道胆道镜取石术后痊愈;3D组无结石残留病例。随访2~18个月,两组患者均无结石复发。结论 3D腹腔镜技术使胆道手术更精准、微创,有着广阔的应用前景。 相似文献
996.
997.
目的了解临床中专学历护士核心能力现状,为培养中专学历护士核心能力提供参考依据。方法采用《一般资料调查表》及《中国注册护士核心能力量表》对197名临床中专学历护士进行问卷调查,回收有效问卷183份。结果 183名中专学历护士的核心能力总分为(151.45±35.62)分,各条目均分为(2.59±0.26)分;1~5年护龄护士得分最低,16~20年护龄护士得分最高,不同护龄组护士的核心能力得分差异有统计学意义(P0.05);职称为护士的中专学历护士核心能力得力最低,与护师、主管护师组比较差异均有统计学意义(P均0.05),而护师、主管护师职称的护士核心能力得分差异无统计学意义(P0.05);急诊科护士得分最高,ICU护士得分最低,不同科室护士核心能力得分差异有统计学意义(P0.05)。结论二级医院临床中专学历护士核心能力处于中等水平,护理管理者要加强护士的岗位培训,在工作中分层级使用及管理,促进护士核心能力水平的提升。 相似文献
998.
999.
Rogers KM Pierson CA Culbertson NT Mo C Sturm AM Eckstein J Barbuch R Lees ND Bard M 《Antimicrobial agents and chemotherapy》2004,48(9):3425-3435
Sterol synthesis in fungi is an aerobic process requiring molecular oxygen and, for several cytochrome-mediated reactions, aerobically synthesized heme. Cytochrome b(5) is required for sterol C5-6 desaturation and the encoding gene, CYB5, is nonessential in Saccharomyces cerevisiae. Cyb5p and Ncp1p (cytochrome P-450 reductase) appear to have overlapping functions in this organism, with disruptions of each alone being viable. The cytochrome P-450 reductase phenotype has also been shown to demonstrate increased sensitivity to azole antifungals. Based on this phenotype, the CYB5 gene in the human pathogen Candida albicans was investigated to determine whether the cyb5 genotype was viable and would also demonstrate azole sensitivity. Sequential disruption of the CYB5 alleles by direct transformation resulted in viability, presumably conferred by the presence of a third copy of the CYB5 gene. Subsequent disruption procedures with a pMAL2-CYB5 rescue cassette and a CYB5-URA3 blaster cassette resulted in viable cyb5 strains with no third copy. The C. albicans CYB5 gene is concluded to be nonessential. Thus, the essentiality of this gene and whether we observed two or three alleles was dependent upon the gene disruption protocol. The C. albicans cyb5 strains produced a sterol profile containing low ergosterol levels and sterol intermediates similar to that reported for the S. cerevisiae cyb5. The C. albicans cyb5 shows increased sensitivity to azoles and terbinafine, an inhibitor of squalene epoxidase, and, unexpectedly, increased resistance to morpholines, which inhibit the ERG2 and ERG24 gene products. These results indicate that an inhibitor of Cyb5p would not be lethal but would make the cell significantly more sensitive to azole treatment. 相似文献
1000.
Dennis Kim Chung Mo Ken Kin Ming Lau Donna Mei Yee Fung Bosco Hon Ming Ma Titanic Fuk On Lau Sheung Wai Law 《Hong Kong Physiotherapy Journal》2021,41(2):109
Objective:To evaluate the new service model of additional weekend and holiday physiotherapy (PT) by comparing functional outcomes and hospital length of stay between a group of geriatric patients with hip fracture receiving daily PT training and a group of geriatric patients with hip fracture receiving weekdays PT training.Methods:A retrospective case-historical control chart review was conducted and a total of 355 patients were identified. Between-group comparisons were done on functional outcomes including Modified Functional Ambulation Classification (MFAC), Elderly Mobility Scale (EMS), Modified Barthel Index (MBI) and process outcome in terms of length of stay (LOS) in hospitals.Results:With similar characteristics, patients who received weekend and holiday PT training had a significant higher percentage of MFAC Category III and a significant lower percentage of MFAC Category II () and significant higher MBI scores ( deviation, median; Study group: points, 51 points; Control group: points, 43 points; ) upon admission to rehabilitation hospital. A similar trend in EMS scores (Study group: points, 7 points; Control group: points, 6 points; ) and MBI scores (Study group: points, 68 points; Control group: points, 64 points; ) were observed upon discharge from the rehabilitation hospital. The average LOS in acute hospitals remained static (Study group: days, 7 days; Control group: days, 6 days; ). The average LOS in rehabilitation hospital (Study group: days, 20 days; Control group: days, 23 days; ) and total in-patient LOS (Study group: days, 26 days; Control group: days, 28 days; ) were significantly reduced. A higher percentage of days having PT training during hospitalization in rehabilitation hospital was shown with the implementation of new service (Study group: 89.1%; Control group: 65.9%, ).Conclusion:Additional weekend and holiday PT training in post-operative acute and rehabilitation hospitalization benefits geriatric patients with hip fracture in terms of improved training efficiency, where hospital LOS was shortened with more PT sessions, without any significant impacts on functional outcome. 相似文献