全文获取类型
收费全文 | 395140篇 |
免费 | 27197篇 |
国内免费 | 9284篇 |
专业分类
耳鼻咽喉 | 4896篇 |
儿科学 | 11197篇 |
妇产科学 | 7986篇 |
基础医学 | 32011篇 |
口腔科学 | 9600篇 |
临床医学 | 43356篇 |
内科学 | 51351篇 |
皮肤病学 | 5831篇 |
神经病学 | 21803篇 |
特种医学 | 9981篇 |
外国民族医学 | 34篇 |
外科学 | 40003篇 |
综合类 | 57838篇 |
现状与发展 | 24篇 |
一般理论 | 33篇 |
预防医学 | 42368篇 |
眼科学 | 9602篇 |
药学 | 34620篇 |
411篇 | |
中国医学 | 32115篇 |
肿瘤学 | 16561篇 |
出版年
2023年 | 6616篇 |
2022年 | 11963篇 |
2021年 | 15913篇 |
2020年 | 14954篇 |
2019年 | 20225篇 |
2018年 | 17909篇 |
2017年 | 14787篇 |
2016年 | 12535篇 |
2015年 | 11664篇 |
2014年 | 23349篇 |
2013年 | 25763篇 |
2012年 | 21274篇 |
2011年 | 23068篇 |
2010年 | 18552篇 |
2009年 | 17163篇 |
2008年 | 16720篇 |
2007年 | 17121篇 |
2006年 | 14909篇 |
2005年 | 13048篇 |
2004年 | 10613篇 |
2003年 | 9358篇 |
2002年 | 7365篇 |
2001年 | 6718篇 |
2000年 | 5491篇 |
1999年 | 4714篇 |
1998年 | 3922篇 |
1997年 | 3677篇 |
1996年 | 3096篇 |
1995年 | 3062篇 |
1994年 | 2884篇 |
1993年 | 2278篇 |
1992年 | 2334篇 |
1991年 | 2011篇 |
1990年 | 1784篇 |
1989年 | 1600篇 |
1988年 | 1517篇 |
1987年 | 1316篇 |
1985年 | 3974篇 |
1984年 | 4944篇 |
1983年 | 3440篇 |
1982年 | 3900篇 |
1981年 | 3628篇 |
1980年 | 3234篇 |
1979年 | 2962篇 |
1978年 | 2573篇 |
1977年 | 1939篇 |
1976年 | 2184篇 |
1975年 | 1651篇 |
1974年 | 1445篇 |
1973年 | 1295篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Oral Everolimus for Treatment of a Giant Left Ventricular Rhabdomyoma in a Neonate—Rapid Tumor Regression Documented by Real Time 3D Echocardiography 下载免费PDF全文
Robert Wagner M.D. Ph.D. Frank Thomas Riede M.D. Hiroshi Seki M.D. Frauke Hornemann M.D. Steffen Syrbe M.D. Ingo Daehnert M.D. Ph.D. Michael Weidenbach M.D. Ph.D. 《Echocardiography (Mount Kisco, N.Y.)》2015,32(12):1876-1879
The presented case reports on successful treatment with everolimus in a neonate with left ventricular giant rhabdomyoma. The authors used a different dosage regime compared to literature and documented rapid tumor regression by 3D echocardiography. 相似文献
102.
103.
Orapan Poachanukoon Nualanong Visitsunthorn Watcharee Leurmarnkul Pakit Vichyanond 《Pediatric allergy and immunology》2006,17(3):207-212
Quality of life (QoL) is an important consideration among asthma sufferers. The Pediatric Asthma Quality of Life Questionnaire (PAQLQ) is one of the most widely used instruments for measuring health-related QoL in children with asthma. The standardized version of PAQLQ contains 23 questions in three domains, i.e., activity limitation, symptoms and emotional function. The objective of this study was to validate the Thai-translated version of the PAQLQ. The study design consisted of a five-week single cohort study. Patients recorded symptoms, and peak expiratory flow rate (PEFR) each morning and evening during the first and fifth week of the study in asthma diary. At each clinic visit, a trained-interviewer administered the PAQLQ and performed spirometric measurements. Fifty-one children, ages between 7 and 17 yr participated in the study. Scores from the asthma diary were used to classify patients into stable vs. unstable groups. The construct validity of the questionnaire was confirmed in both cross-sectional and longitudinal studies by demonstrating correlations between various PAQLQ domains with clinical asthma parameters (asthma diary, beta-agonist use and PEFR). There was high internal consistency for scores of the three domains (Cronbach's alpha-coefficient = 0.83-0.95). For those with stable asthma, the reliability of PAQLQ was good for the rating scale (intra-class correlation coefficient--ICC = 0.84) and for total score (alpha = 0.97) indicating high reproducibility of the PAQLQ. The significant difference of changes QoL scores between stable and unstable groups was observed in all domains. We conclude that the Thai version of PAQLQ is valid and reliable for implementing in Thai children with asthma. 相似文献
104.
We have carried out a prospective randomised, single blind clinical trial to investigate the effect of continuous passive motion on range of knee flexion, lack of extension, pain levels and analgesic use after total knee replacement surgery. 85 subjects were randomly allocated to control or study group. All subjects followed the existing rehabilitation protocol, which permits immediate active range of motion exercises and mobilisation with the study group using continuous passive motion for 1 h, twice a day. Outcome measures employed were range of motion, pain assessed on a visual analogue scale and analgesic use according to the WHO ladder. Blinded evaluation was carried out preoperatively, at time of discharge from hospital, 6 weeks, 6 and 12 months postoperation. No significant difference was observed between groups at all time intervals for each outcome variable using Wilcoxon Rank sum tests. The results substantiate previous findings that short duration continuous passive motion following total knee arthroplasty does not influence outcome of range of motion or reported pain. 相似文献
105.
目的 研究模拟舰船两种剂量水平磁场复合噪声、高温对机体联合作用的特点。方法 采用有交互作用的三因素二水平的正交试验设计方法及方差分析法,按正交表L8(2^7)的要求安排8种复合暴露剂量组合,分别将兔和大鼠分为8个复合暴露组和8个对照组。结果 兔球结膜毛细血管管径、大鼠肝和脾脏HSP70的分析结果显示出磁场是对其影响的主因素(均为P〈0.01),其次是高温(均为P〈0.05),大鼠下丘脑AVP和大鼠脑组织HSP70的分析结果显示出磁场是对其影响的主因素(均为P〈0.05)。兔血浆内皮素的分析结果显示出磁场与噪声交互作用所对应的F值有非常显著性意义(P〈0.01),磁场与噪声、高温三者之间交互作用所对应的F值也有显著性意义(P〈0.05)。结论 磁场是对上述指标影响的主因素,而高温也是重要因素;磁场与噪声有交互作用,磁场与噪声、高温三者之间也有交互作用;应该重视舰船环境因素对舰船人员的复合作用。 相似文献
106.
107.
108.
Here we report how the different types of regional muscle involvement, i.e. bulbar, ocular or generalized, in patients with myasthenia gravis (MG) influence the mental aspects of quality of life. Clinical examination according to Osserman was performed in 48 MG patients (45 women, three men; mean age 54, SD 12 years). Each patient was at the time for clinical evaluation asked to fill out the disease-specific Myasthenia Gravis Questionnaire (MGQ) and the Short-Form 36-item questionnaire for health survey (SF-36) as patient-oriented tools. We related the regional domains (generalized domain, bulbar domain and ocular domain) of the MGQ and the clinical findings, respectively, with mental quality of life as assessed by SF-36. Bulbar and generalized involvement results in impairment of mental aspects of quality of life, whereas ocular involvement does not. 相似文献
109.
Summary Of the 105 great cormorants (Phalacrocorax carbo sinensins) from northern Poland (the Vistula Lagoon and Masurian Lake District), examined in 2000–2001, 67 proved hosts of the nematode
Syncuaria squamata (Linstow, 1883). The prevalence, mean intensity, and intensity range amounted to 63.8 %, 36.2 specimens, and 1–120 specimens,
respectively. The infection was heavier in the immature birds (84.6 %, 40.9 inds, and 1–120 inds) than in the adults (3.7
%, 1 ind.). The nematodes were dominated by gravid females (n=1846), followed by males (n=157), immature females (n=79), and
L4 larvae (n=2). Measurements of the parasite are provided. S. squamata is a new species for the parasite fauna of Poland. 相似文献
110.
Philip A. Rozario Nancy L. Morrow-Howell Enola K. Proctor 《Quality of life research》2006,15(4):755-759
Using the SF-12 to measure physical and mental functioning, the authors examine the intra-individual changes in health-related
quality of life (HRQOL) 6 months post-discharge for depressed older adults. In addition, they examine three sets of predictors
that might influence these changes. The sample of depressed older adults was recruited from an inpatient geropsychiatry unit.
Although their physical and mental health scores on the SF-12 were lower than comparable norms, the sample showed an average
increase in their mental functioning but a decrease in the physical functioning over the 6 months. Negative life-events were
significant predictors of people who reported no change in their mental health functioning and decreases in their physical
health functioning. Interestingly, those who experienced positive life events were more likely to report declines and younger
participants were more likely to report no change in their physical functioning. The findings indicate that the effects of
depression on HRQOL can have enduring effects on a sample of previously hospitalized older adults. The significance of life
event changes might signify the importance of taking into account non-traditional areas of medical interventions. Further,
the findings indicate the usefulness of the SF-12 quantifying HRQOL outcomes. 相似文献