全文获取类型
收费全文 | 198篇 |
免费 | 11篇 |
国内免费 | 4篇 |
专业分类
妇产科学 | 1篇 |
基础医学 | 15篇 |
口腔科学 | 4篇 |
临床医学 | 31篇 |
内科学 | 34篇 |
皮肤病学 | 2篇 |
神经病学 | 4篇 |
特种医学 | 4篇 |
外科学 | 32篇 |
综合类 | 18篇 |
预防医学 | 42篇 |
眼科学 | 9篇 |
药学 | 11篇 |
中国医学 | 4篇 |
肿瘤学 | 2篇 |
出版年
2022年 | 13篇 |
2021年 | 16篇 |
2020年 | 6篇 |
2019年 | 5篇 |
2018年 | 9篇 |
2017年 | 5篇 |
2016年 | 5篇 |
2015年 | 4篇 |
2014年 | 9篇 |
2013年 | 7篇 |
2012年 | 4篇 |
2011年 | 16篇 |
2010年 | 8篇 |
2009年 | 9篇 |
2008年 | 4篇 |
2007年 | 10篇 |
2006年 | 10篇 |
2005年 | 9篇 |
2004年 | 13篇 |
2003年 | 4篇 |
2002年 | 13篇 |
2001年 | 4篇 |
2000年 | 5篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1985年 | 1篇 |
1980年 | 1篇 |
1976年 | 1篇 |
排序方式: 共有213条查询结果,搜索用时 15 毫秒
101.
102.
103.
M. François 《Revue Fran?aise d'Allergologie et d'Immunologie Clinique》2008,48(6):452-455
Respiratory and/or food allergy is common in children. Serous otitis media is also very frequent in children, especially those between three and six years of age. On the other hand, in spite of promising animal studies, a cause-and-effect relation between these two conditions in man has not been established. Concerning the treatment, avoidance of food allergens may be as efficacious for an active serous otitis media as for avoidance of a new episode. Conversely, antihistamines do not appear to be efficacious, at least with respect to being curative. 相似文献
104.
S. Gungor Kobat E. Yusufoglu F.C. Gul F. Celik M. Kalayci 《Journal fran?ais d'ophtalmologie》2021,44(2):218-223
PurposeTo evaluate levels of plasma cerebellin, cortisol, adrenaline and noradrenaline in patients with central serous chorioretinopathy (CSC).Materials and MethodsThis prospective study included 30 patients diagnosed with acute CSC (Group 1) and a control group of 30 age-matched, healthy subjects without CSC (Group 2). Levels of plasma cerebellin, cortisol, adrenaline and noradrenaline were examined in blood samples taken after 8-12 hours of fasting. A value of p < 0.05 was considered statistically significant in the comparative analyses.ResultsThe mean plasma cerebellin level was found to be 232.56 ± 113.28 pg/ml in Group 1 and 174.07 ± 82.04 pg/ml in Group 2 (p = 0.02). Mean plasma cortisol was 13.19 ± 3.87 μg/ml in Group 1 and 9.55 ± 2.92 μg/ml in Group 2 (p < 0.01). Mean plasma adrenaline was 60.62 ± 26.67 pg/ml in Group 1 and 46.17 ± 19.20 pg/ml in Group 2 (p = 0.03). Mean plasma noradrenaline was 206.66 ± 73.90 pg/ml in Group 1 and 149.96 ± 51.36 pg/ml in Group 2 (p < 0.01).ConclusionIt can be concluded that increased cerebellin may have a role in the etiology of CSC by increasing catecholamine expression from the adrenal medulla and indirectly by increasing cortisol levels via a paracrine effect from the adrenal cortex. 相似文献
105.
106.
107.
J. Ringers J. Dubbeld A. G. Baranski M. Coenraad E. Sarton A. F. M. Schaapherder B. van Hoek 《American journal of transplantation》2007,7(11):2615-2618
We describe the first cases of reuse of auxiliary liver grafts for orthotopic transplantation in chronic liver disease. A reduced liver graft (segments 2, 3, half of 4) was first transplanted auxiliary for acute liver failure using a new technique. After regeneration of both native liver and graft, the auxiliary graft was removed and immunosuppression discontinued in the first recipients. After informed consent of donors and recipients, both auxiliary grafts were then orthotopically transplanted into second recipients. Both grafts function normally. Reuse of auxiliary grafts may help to reduce the shortage or liver grafts available for transplantation. 相似文献
108.
透析器重复使用的临床评价 总被引:1,自引:0,他引:1
目的探讨透析器重复使用对患者的治疗费用、潜在风险及复用成本的影响。方法将178例血液透析患者按透析器使用次数分为单次使用组(n=94)和复用组(n=84),观察两组患者治疗费用、不良事件及透析器复用所需成本。结果单次使用组接受低通量血液透析(LFHD)8750例次和高通量血液透析(HFHD)653例次,费用分别为(565.46±4.82)元/次和(809.12±10.39)元/次,透析器复用组接受LFHD3840例次和HFHD4660例次,费用为(475.74±3.61)元/次和(529.57±10.55)元/次,两组均未见热原反应、透析器破膜和灭菌剂残余反应发生,未发现新增感染肝炎病例。采用全自动和半自动复用方式进行透析器复用,其复用时间和灭菌剂成本分别为(9.03±0.67)、(23.97±1.18)分钟/支和(9.20±0.14)、(2.01±0.23)元/支。结论复用组HFHD治疗费用明显低于单次使用组LFHD;而按规范进行透析器复用可有效避免风险发生。 相似文献
109.
【目的】改进体外成肌细胞培养方法。【方法】取 2 0只小鼠分 4组 ,取股骨肌用肌块法进行成肌细胞原代培养 ,并重复利用肌块 6次。对培养的成肌细胞进行生长状态观察及免疫的组化鉴定。【结果】重复 6次使用肌块培养的成肌细胞生长、分化良好 ;一次差速贴壁纯化后 ,经免疫组化方法鉴定 ,96 %以上的细胞呈肌细胞特异抗体阳性反应。【结论】重复肌块法培养成肌细胞 ,省略了重复组织获取、消化等烦琐步骤 ,培养效率明显提高 ,并可获得高纯度的成肌细胞 相似文献
110.
Igor Ayzman Samer R. Dibs Jeffrey Goldberger Rod Passman Alan Kadish 《Journal of interventional cardiac electrophysiology》2002,7(1):53-59
Background: Prior studies have found that there is a widespread practice of catheter reprocessing in cardiac electrophysiology laboratories. Effects of reprocessing of ablation catheters on temperature sensing and mechanical deflection are not fully known.
Methods: Twenty-four new and used ablation catheters were studied. Deviation of temperature sensing by catheters from the temperature of a heated saline bath was measured. The angle of deflection of digitally scanned catheters at 75% and 100% handle deflection was also measured. New and used catheters were compared with respect to their temperature sensing accuracy and deflection characteristics.
Results: Overall, there was 0.7 ± 0.1°C (mean ± standard error) deviation of the sensed temperature from the bath temperature, with no significant difference between new and used catheters. Similarly, there was no significant difference in the angle of deflection between new (66.7° ± 6.2° and 24.3° ± 6.8° at 75% and 100% deflections, respectively) and used (59.6° ± 5.6° and 28.7° ± 9.9° at 75% and 100% deflections, respectively) catheters. The difference in the angle of deflection between matched new and used catheters was 18.9° ± 4.2° and 10.9° ± 2.4° at 75% and 100% deflections, respectively, with a relatively broad range (5.0°–35.6° and 0.4°–19.0° at 75% and 100% deflections, respectively).
Conclusions: This study found no significant overall difference in temperature sensing accuracy and deflection angle of new and used ablation catheters. Nevertheless, individual differences in deflection characteristics between new and used catheters are occasionally seen and warrant screening of reprocessed catheters prior to their reuse. 相似文献