全文获取类型
收费全文 | 1764篇 |
免费 | 72篇 |
国内免费 | 8篇 |
专业分类
耳鼻咽喉 | 64篇 |
儿科学 | 57篇 |
妇产科学 | 48篇 |
基础医学 | 357篇 |
口腔科学 | 26篇 |
临床医学 | 244篇 |
内科学 | 246篇 |
皮肤病学 | 14篇 |
神经病学 | 140篇 |
特种医学 | 30篇 |
外科学 | 137篇 |
综合类 | 3篇 |
预防医学 | 172篇 |
眼科学 | 31篇 |
药学 | 202篇 |
中国医学 | 2篇 |
肿瘤学 | 71篇 |
出版年
2023年 | 15篇 |
2022年 | 36篇 |
2021年 | 43篇 |
2020年 | 32篇 |
2019年 | 47篇 |
2018年 | 46篇 |
2017年 | 34篇 |
2016年 | 43篇 |
2015年 | 37篇 |
2014年 | 49篇 |
2013年 | 68篇 |
2012年 | 97篇 |
2011年 | 115篇 |
2010年 | 68篇 |
2009年 | 45篇 |
2008年 | 94篇 |
2007年 | 81篇 |
2006年 | 95篇 |
2005年 | 80篇 |
2004年 | 88篇 |
2003年 | 67篇 |
2002年 | 52篇 |
2001年 | 20篇 |
2000年 | 25篇 |
1999年 | 15篇 |
1998年 | 10篇 |
1997年 | 14篇 |
1994年 | 10篇 |
1993年 | 10篇 |
1992年 | 14篇 |
1991年 | 29篇 |
1990年 | 32篇 |
1989年 | 25篇 |
1988年 | 34篇 |
1987年 | 23篇 |
1986年 | 24篇 |
1985年 | 19篇 |
1984年 | 21篇 |
1983年 | 11篇 |
1982年 | 12篇 |
1980年 | 9篇 |
1979年 | 10篇 |
1978年 | 16篇 |
1975年 | 12篇 |
1974年 | 10篇 |
1973年 | 11篇 |
1972年 | 11篇 |
1971年 | 10篇 |
1969年 | 13篇 |
1967年 | 10篇 |
排序方式: 共有1844条查询结果,搜索用时 15 毫秒
81.
82.
83.
84.
Savonlahti E Pajulo M Ahlqvist S Helenius H Korvenranta H Tamminen T Piha J 《Nordic journal of psychiatry》2005,59(2):139-147
In this pilot study, the interactive skills of infants with their high-risk, substance-dependent mothers were explored in residential treatment from pregnancy until the infant was 6 months of age. Fourteen mother-infant pairs were videotaped in feeding and free play situations at 6 months after birth. A comparison, low-risk group consisted of 12 ordinary Finnish mother-infant pairs with minimal clinical risks. The findings show significantly higher levels of dyadic interactive deficiencies among the high-risk mother-infant pairs compared to the low-risk pairs, displayed especially in the feeding situation as lack of mutuality and flat, empty, constricted affective tone of interaction. Also, more interactive deficiencies were found among the high-risk infants compared to the low-risk infants, but the differences were not significant. In this study, this finding might reflect the reduced amount of somatic complications and the benefits of treatment, the impacts of which were not explored. The differences between the high- and low-risk infants were displayed as more withdrawal, depressed mood and avoiding behavior and as less alertness and attentional abilities, robustness and focus on parent's emotional state among the high-risk group. 相似文献
85.
Zhuravskii SG Aleksandrova LA Ivanov SA Sirot VS Lopotko AI Zhloba AA 《Bulletin of experimental biology and medicine》2004,137(1):98-102
We studied the effect of natural antioxidant carnosine on Wistar rats with experimental acoustic trauma of the auditory apparatus. Repeated intraperitoneal injection of carnosine in a dose of 200 mg/kg 12 and 0.5 h before modeling of acute acoustic trauma decreased the severity of degenerative and atrophic changes in the nuclei of hair cells in the cochleae. Carnosine compensated the deficiency of tissue antioxidant systems and suppressed generation of lipid peroxidation products in tissues of the membranous cochlea and auditory cortex of the temporal lobes. Carnosine holds much promise as a nonspecific otoprotector. 相似文献
86.
Hukki J Balan P Ceponiene R Kantola-Sorsa E Saarinen P Wikstrom H 《The Journal of craniofacial surgery》2004,15(2):185-191
The purpose of this article is to report the case of a 10-year-old girl born with anophthalmia, bilateral oblique facial clefts, and missing scalp and bones over the temporal and parietal areas of the cranial vault bilaterally. Early amnion rupture seems to be the most probable cause of this rare combination of anomalies. Because no similar case has been reported in the literature so far, we describe here the clinical and psychosocial history of this unusual patient, who has been able to live the intellectually and socially normal life of a blind child in spite of the major craniofacial deformities. The already completed and possible future therapeutic strategies are discussed. 相似文献
87.
Endovascular coil occlusion of 1811 intracranial aneurysms: early angiographic and clinical results 总被引:27,自引:0,他引:27
Henkes H Fischer S Weber W Miloslavski E Felber S Brew S Kuehne D 《Neurosurgery》2004,54(2):268-80; discussion 280-5
OBJECTIVE: We sought to evaluate the early angiographic and clinical outcomes of the first session of endovascular coil occlusion of a large number of patients with intracranial aneurysms treated by five neurointerventionalists during a decade at a single center. METHODS: We performed retrospective analyses of pre- and postprocedural angiographic studies and early clinical outcomes. Enrolled patients underwent endovascular treatment of intracranial aneurysms with detachable coils. RESULTS: A total of 1811 aneurysms in 1579 patients were treated with coil occlusion. Of these, 90 to 100% occlusion of 86.5% of the aneurysms was achieved. In 82.3% of the procedures, no complications occurred. The clinical outcome profile at primary discharge according to the Glasgow Outcome Scale was as follows: Grade V, 74.6%; Grade IV, 6.7%; Grade III, 11.1%; Grade II, 3.1%; and Grade I, 4.5%. In patients with large aneurysms with wide necks, a lower occlusion rate and an increased complication rate were encountered. The use of three-dimensional and fibered coils resulted in higher occlusion rates. Balloon remodeling and stent deployment increased the complication rate. Previous aneurysm rupture, procedural complications, and vasospasm correlated with poor outcome. Of the patients in poor grade after aneurysm rupture, 42% recovered to Glasgow Outcome Scale Grade IV or V, as opposed to 90% of patients who were treated for unruptured aneurysms. The ischemic complication rate was 9%, and the hemorrhagic complication rate was 3%. The early procedural morbidity rate was 5.3%, and the procedural mortality rate was 1.5%. The management mortality rate was 4.4%. CONCLUSION: These data confirm the safety and efficacy of endovascular coil occlusion for patients with intracranial aneurysms. 相似文献
88.
Hyppönen E 《Nutrition reviews》2004,62(9):340-347
Evidence from animal experiments and human observational studies suggests that some dietary micronutrients may protect against the development of type 1 diabetes. The most promising data so far have been obtained for a beneficial role of vitamin D. Beneficial effects of vitamin E (or other antioxidants) in diabetes development remain hypothetical. Despite plausible theoretical background evidence from animal experiments and supportive data from pilot studies, randomized, controlled trials using nicotinamide have not provided any evidence for a beneficial effect. 相似文献
89.
90.
Diode laser thermal keratoplasty to correct hyperopia 总被引:2,自引:0,他引:2
PURPOSE: We investigated long-term efficacy, predictability, stability, and safety of diode laser thermal keratoplasty (DTK) to correct hyperopia. METHODS: DTK was performed on 24 eyes (18 patients). Eight eyes with high hyperopia (mean +4.75 +/- 0.63 D; range +3.50 to +5.50 D) received 12 pairs of coagulation spots at 6-mm and 7-mm treatment zone diameters; eight eyes with low hyperopia (mean +2.25 +/- 0.40 D; range +1.50 to +2.75 D) received eight coagulation spots at 8 mm, and eight eyes with low hyperopia (mean +1.50 +/- 0.46 D; range +1.25 to +2.25 D) were treated to induce mild myopia (-1.50 D) in the non-dominant eye for monovision using eight pairs of spots at 7 and 8-mm diameters. Minimum follow-up was 18 months. RESULTS: Mean decrease in cycloplegic refraction at 18 months was 5.00 +/- 0.38 D in the high hyperopia group, 1.75 +/- 0.19 D in the low hyperopia group, and 3.25 +/- 0.27 D in the presbyopia group. Mean increase in uncorrected visual acuity (UCVA) at 18 months was 8.125 +/- 2.1 Snellen lines in the high hyperopia group, 6.625 +/- 0.744 lines for low hyperopia; decrease of 1.00 +/- 1.85 line occurred in the presbyopia group. Near UCVA in the presbyopia group improved by 3.875 +/- 0.83 Jaeger lines. Best spectacle-corrected visual acuity (BSCVA) was restored by 3 months in all eyes. CONCLUSION: DTK was an effective and fairly safe procedure, with reasonable predictability and stability. Nomograms for laser energy level, treatment zone diameter, and number of spots need improvement. 相似文献