全文获取类型
收费全文 | 465篇 |
免费 | 20篇 |
国内免费 | 32篇 |
专业分类
儿科学 | 8篇 |
妇产科学 | 5篇 |
基础医学 | 28篇 |
口腔科学 | 14篇 |
临床医学 | 31篇 |
内科学 | 66篇 |
皮肤病学 | 12篇 |
神经病学 | 15篇 |
特种医学 | 114篇 |
外科学 | 44篇 |
综合类 | 87篇 |
预防医学 | 9篇 |
眼科学 | 3篇 |
药学 | 64篇 |
肿瘤学 | 17篇 |
出版年
2022年 | 2篇 |
2021年 | 4篇 |
2020年 | 2篇 |
2018年 | 2篇 |
2017年 | 5篇 |
2016年 | 7篇 |
2015年 | 5篇 |
2014年 | 9篇 |
2013年 | 17篇 |
2012年 | 12篇 |
2011年 | 10篇 |
2010年 | 14篇 |
2009年 | 16篇 |
2008年 | 20篇 |
2007年 | 33篇 |
2006年 | 24篇 |
2005年 | 21篇 |
2004年 | 5篇 |
2003年 | 14篇 |
2002年 | 12篇 |
2001年 | 7篇 |
2000年 | 7篇 |
1999年 | 8篇 |
1998年 | 33篇 |
1997年 | 22篇 |
1996年 | 20篇 |
1995年 | 19篇 |
1994年 | 18篇 |
1993年 | 15篇 |
1991年 | 6篇 |
1990年 | 5篇 |
1989年 | 16篇 |
1988年 | 15篇 |
1987年 | 11篇 |
1986年 | 10篇 |
1985年 | 4篇 |
1984年 | 8篇 |
1983年 | 10篇 |
1982年 | 6篇 |
1981年 | 10篇 |
1980年 | 8篇 |
1978年 | 4篇 |
1977年 | 3篇 |
1976年 | 2篇 |
1975年 | 8篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1968年 | 1篇 |
1965年 | 1篇 |
1963年 | 1篇 |
排序方式: 共有517条查询结果,搜索用时 15 毫秒
71.
Renal localization of gallium-67 citrate 总被引:1,自引:0,他引:1
72.
The authors describe the use of a desk-top computer to analyze processor status. Quality control data (sensitometry, densitometry, thermometry, etc.) are collected conventionally. Analysis of the data is subsequently performed using specially designed software. This computer analysis results in a small savings in time and in greatly improved management and presentation of quality control data. 相似文献
73.
74.
甘草类黄酮对四氯化碳致小鼠急性肝损伤的影响 总被引:48,自引:0,他引:48
甘草类黄酮(GF)是从甘草根中提得。本文结果表明,预先ig GF 200,400,600mg·kg-1·d-1×2d能显著降低CCl4所致血清谷丙转氨酶,乳酸脱氢酶活性的升高以及肝内丙二醛含量的增加,其作用呈剂量依赖性。GF可减轻CCl4所致的肝脏坏死,但对血清内酶的活性没有抑制作用,也不减少正常小鼠血清中酶的活性。GF的肝保护作用可能与其抗脂质过氧化作用有关。 相似文献
75.
Background
Medical Termination of Pregnancy (MTP) is a commonly performed during the first trimester. Dilatation and Evacuation (D & E) mandates rapid dilatation of cervix with metal dilators, which requires anaesthesia and may be associated with trauma to the uterus, cervix and later cervical incompetence. The problem of rapid cervical dilatation is obviated with intravaginal misoprostol.Methods
Intravaginal misoprostol tablet 200 microgram was inserted, a night prior to MTP to ripen the cervix. Cervix was dilated with metal dilators only in cases where cervix did not loosen up sufficiently. Products of conception were removed by suction.Results
Out of 108 cases cervical dilatation was not required in 96 cases (88.9%).Conclusion
Intravaginal misoprostol 200 microgram proved effective as a priming agent prior to MTP in the first trimester.Key Words: Misoprostol, MTP 相似文献76.
T Sinha PP Varma A Srivastava SC Karan AS Sandhu GS Sethi R Khanna R Talwar V Narang 《Medical Journal Armed Forces India》2006,62(3):236-238
Background
Laparoscopic donor nephrectomy (LDN) has been gaining popularity among kidney donors. There have been concerns about the safety and efficacy of the procedure as compared to open donor nephrectomy (ODN). We compare our results on LDN with ODN.Methods
We retrospectively analysed our data of LDN and ODN. Duration of surgery, blood loss, period of hospitalisation, per oral intake and analgesic requirements.Result
22 LDNs were done, the operation time ranged from 220-300 minutes, and blood loss from 100-150ml. In the first 10 laparoscopic operations four cases required conversion to open surgical dissection. Only one case was converted to open surgery in the subsequent 12 laparoscopic cases. Oral intake was started on the first postoperative day. Analgesic requirement in laparoscopy cases was less. Patients were mobilised on the first day after surgery. Patients were discharged by seventh day. There was no significant difference in the functioning of the graft after revascularisation in the recipient.Conclusion
Laparoscopic donor nephrectomy is a safe and effective technique of donor nephrectomy.Key Words: Laparoscopy, Laparoscopic donor nephrectomy, Living kidney donors, Kidney transplantation 相似文献77.
Background
Monoclonal gammopathies occurs in patients with malignant diseases of plasma cells and lymphocytes and in few benign conditions. The objective of this study was to assess the precision, accuracy and confirmation of monoclonal gammopathies on serum protein electrophoresis (SPE) and the clinical relevance of detection and characterization of M component.Methods
All samples received for serum electrophoresis in the last 3 years were analysed for data on M band positivity and correlating it with clinical profile of the patients. Immunofixation (IFE), Immunoelectrophoresis (IEP) and IgG, IgM estimation were carried out in few cases. The follow up of cases was done by serial monitoring of SPE and β2 microglobulin levels.Results
1155 samples were received during the 3 years period. 282 (24.4%) samples were positive for M component on SPE. Of these, 239 (84.8%) patients had M spike in λ region and 43 patients had M spike in β region. The mean load of the M protein band in the λ region was 37.8% and in β region was 35.8%. IgG with κ chain was seen in 40%, IgG with λ chain was seen in 50%, 5% patients each had IgM with κ and IgA with λ light chain. 246 samples (96.5%) had high levels of β2 microglobulin. Of the 116 cases of multiple myeloma, IgG levels was more commonly raised (5%) as compared to IgA (6.9%) and IgM (5.2%).Conclusion
It is recommended that SPE should be performed in patients having unexplained weakness, anaemia, back pain, osteoporosis, osteolytic lesions, fractures, renal insufficiency or recurrent infections.Key Words: Serum protein, Electrophoresis, M band, Multiple myeloma 相似文献78.
79.
A hybrid digital subtraction angiography technique and noise-reduction algorithm were used to evaluate the carotid bifurcation. Temporal, hybrid, and reduced-noise hybrid images were obtained in right and left anterior oblique projections, and both single- and multiple-frame images were created with each method. The resulting images were graded on a scale of 1 to 5 by three experienced neuroradiologists. Temporal images were preferred over hybrid images (average score = 3.2 and 2.4, respectively). The percentage of nondiagnostic examinations, as agreed upon by two readers, was higher for temporal alone than temporal + hybrid (4 and 1, respectively). In addition, also by agreement between two readers, temporal + hybrid images significantly increased the number of bifurcations seen in two views (87%) compared to temporal subtraction alone (64%). 相似文献
80.
Archana B Netto Girish Baburao Kulkarni Arun B Taly GS Umamaheshwara Rao Sunder Periyavan Shivaji Rao 《Journal of clinical neuroscience》2012,19(12):1664-1667
A comparison of the effectiveness of immunomodulatory therapies in patients with Guillain Barré syndrome (GBS) who require mechanical ventilation (MV) is important for patient treatment and cost. We aimed to compare the effectiveness of three modes of intervention on the outcome of patients with GBS receiving MV: intravenous immunoglobulin (IVIgG); small volume plasmapheresis (SVP) and large volume plasmapheresis (LVP). Patients with GBS satisfying National Institute of Neurological and Communicative Disorders and Stroke 1990 criteria and requiring MV between 1997 between 2007 were analyzed. The primary outcome parameters evaluated were mortality, duration of MV, hospital stay and Hughes scale at discharge from hospital. Of the 173 (Male: Female, 118:55) patients who required MV during the study, 106 patients received single modality treatment (IVIgG 31, LVP 45, SVP 30) based on availability, affordability and feasibility. Patients receiving IVIgG had a higher incidence of severe weakness and bulbar involvement. The mean duration of MV (p = 0.61), total hospital stay (p = 0.44) and Hughes scale at discharge (p = 0.31) did not differ among the three groups. Complications were similar in the three treatment groups except for hypoalbuminemia and anemia, which were more common in patients in the LVP group. In conclusion, the outcome of patients treated with these three immunomodulatory treatment modalities did not vary. The beneficial effects of SVP in our study warrant further randomized control trials especially in resource-constrained settings. 相似文献