全文获取类型
收费全文 | 2665篇 |
免费 | 174篇 |
国内免费 | 10篇 |
专业分类
耳鼻咽喉 | 43篇 |
儿科学 | 74篇 |
妇产科学 | 29篇 |
基础医学 | 285篇 |
口腔科学 | 124篇 |
临床医学 | 156篇 |
内科学 | 607篇 |
皮肤病学 | 83篇 |
神经病学 | 164篇 |
特种医学 | 199篇 |
外国民族医学 | 1篇 |
外科学 | 432篇 |
综合类 | 44篇 |
预防医学 | 176篇 |
眼科学 | 99篇 |
药学 | 166篇 |
中国医学 | 8篇 |
肿瘤学 | 159篇 |
出版年
2023年 | 9篇 |
2022年 | 22篇 |
2021年 | 52篇 |
2020年 | 35篇 |
2019年 | 60篇 |
2018年 | 66篇 |
2017年 | 61篇 |
2016年 | 60篇 |
2015年 | 73篇 |
2014年 | 84篇 |
2013年 | 102篇 |
2012年 | 108篇 |
2011年 | 120篇 |
2010年 | 114篇 |
2009年 | 92篇 |
2008年 | 112篇 |
2007年 | 105篇 |
2006年 | 107篇 |
2005年 | 108篇 |
2004年 | 127篇 |
2003年 | 110篇 |
2002年 | 83篇 |
2001年 | 62篇 |
2000年 | 88篇 |
1999年 | 79篇 |
1998年 | 63篇 |
1997年 | 70篇 |
1996年 | 62篇 |
1995年 | 49篇 |
1994年 | 52篇 |
1993年 | 44篇 |
1992年 | 28篇 |
1991年 | 35篇 |
1990年 | 36篇 |
1989年 | 34篇 |
1988年 | 50篇 |
1987年 | 41篇 |
1986年 | 38篇 |
1985年 | 28篇 |
1984年 | 19篇 |
1983年 | 19篇 |
1982年 | 19篇 |
1980年 | 11篇 |
1979年 | 12篇 |
1978年 | 8篇 |
1977年 | 15篇 |
1976年 | 11篇 |
1975年 | 8篇 |
1973年 | 9篇 |
1968年 | 7篇 |
排序方式: 共有2849条查询结果,搜索用时 375 毫秒
41.
42.
M. C. Montero M. L. Valdivia E. Carvajal A. Montaño C. Buenestado A. Lluch M. Atienza 《Pharmacy World & Science》1994,16(4):187-192
This article describes the economic and social impact of nutropenia induced by myelotoxic chemotherapy in patients with cancer during the period 1 January–31 December 1991. Neutropenia is a life-threatening complication of chemotherapy in patients with cancer. The episodes of (ever and infections originating from neutropenia require hospitalization of the patient until the granulocyte levels are restored. The calculation of the economic cost was based on the following parameters: length of stay in hospital, analytical tests performed on the patient, type and cost of drug therapy administered, blood transfusions performed, health assistance received, cost of isolation and absence from work. The overall economic cost of neutropenia in patients with cancer reached 329,775 pesetas ($2,893). Cost of the health-care staff was the largest budget item in relation to the total health resources estimated. 相似文献
43.
44.
45.
Montero M Méndez R Tellado M Pais E Vela D Candal J 《Cirugía pediátrica : organo oficial de la Sociedad Espa?ola de Cirugía Pediátrica》1999,12(4):144-147
A number of 411 pediatric patients (636 refluxing renal units) diagnosed as having vesicoureteral reflux (VUR) were evaluated in our Hospital between 1985 and 1997. All the patients were divided in two historic groups based on the therapeutical modalities employed. The children included in group A (between 1985 and 1995) were medically or surgically treated according to the grade of reflux. In the group B (between 1995 and 1997), the endoscopic treatment was added to previous. All cases underwent urine cultures, renal ultrasonography, voiding cystourethrography and isotopic gammagraphy with DMSA scan. In some patients were performed radionuclide renography with DTPA or MAG-3 to assess renal function. We consider that medical management is required in low grade reflux (I and II) but patients with high grade reflux (IV and V) clearly benefit from early ureteral surgical reimplantation (Cohen technique). In our series, patients with reflux grade III are treated endoscopically with Teflon or PDMS (polydimethylsiloxane) with resolution of reflux in 82-92% after first injection. 相似文献
46.
47.
48.
Pérez JM López-Solera I Montero EI Brana MF Alonso C Robinson SP Navarro-Ranninger C 《Journal of medicinal chemistry》1999,42(26):5482-5486
The reaction of platinum salts with bis(naphthalimide), compound 1, yielded two Pt-bis(naphthalimide) complexes, compounds 2 and 3 which differ from each other in their leaving groups being 1,1-cyclobutane dicarboxylate or chloride, respectively. The testing of the cytotoxic activity of compounds 2 and 3 against several tumor cell lines indicated that both compounds may be endowed with important antineoplastic properties since they circumvent cisplatin resistance. At similar rates of DNA platination (r(b) = 0.025), compounds 2 and 3 unwind supercoiled pUC8 DNA by (48 +/- 2) degrees. Altogether, these data suggest (i) that the cytotoxic activity of compounds 2 and 3 may be due to a combined effect of platination and intercalation and (ii) that the bis(naphthalimide) ligand is a suitable "carrier" that favors DNA targeting by cis-Pt(II) centers. 相似文献
49.
Zusammenassung In der vorliegenden Studie sollte untersucht werden, ob die vonPetrovic, Lavergne undStutzmann vorgeschlagene Kategorisierung des mandibulären Wachstumspotentials für die Behandlung mit dem Funktionsregler Geltung hat. Dazu wurden die Fernröntgenaufnahmen von 140 Patienten der Angle-Klasse II nach zirka zweijähriger Behandlung mit Funktionsreglern analysiert. Im Vergleich zu 133 unbehandelten Kindern mit Angle-Klasse II trat in fast allen Rotationsgruppen eine signifikant größere Zunahme der Unterkiefergesamtlänge ein. Zwischen der Kategorie 2 mit niedrigem Wachstumpotential und Kategorie 5 mit hohem Wachstumspotential wurden keine signifikant unterschiedlichen Zunahmen der Unterkieferlänge festgestellt.
Summary The results of the study show whether the classification of mandibular growth potential, as proposed by Petrovic, Lavergne and Stutzmann has any influence on the treatment with a function regulator. X-rays of 140 class II patients were analysed after a treatment time of approximately 2 years. In comparison with 133 class II children without any treatment, a significant increase of the overall mandibular length was observed in almost all children treated. There was no significant difference in the increase of mandibular length between category 2 (low growth potential) and category 5 (high growth potential).相似文献
50.