全文获取类型
收费全文 | 3953篇 |
免费 | 247篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 54篇 |
儿科学 | 150篇 |
妇产科学 | 127篇 |
基础医学 | 469篇 |
口腔科学 | 296篇 |
临床医学 | 261篇 |
内科学 | 730篇 |
皮肤病学 | 86篇 |
神经病学 | 230篇 |
特种医学 | 183篇 |
外科学 | 490篇 |
综合类 | 30篇 |
一般理论 | 1篇 |
预防医学 | 613篇 |
眼科学 | 61篇 |
药学 | 285篇 |
中国医学 | 33篇 |
肿瘤学 | 119篇 |
出版年
2023年 | 29篇 |
2022年 | 96篇 |
2021年 | 131篇 |
2020年 | 84篇 |
2019年 | 115篇 |
2018年 | 131篇 |
2017年 | 80篇 |
2016年 | 106篇 |
2015年 | 128篇 |
2014年 | 172篇 |
2013年 | 159篇 |
2012年 | 254篇 |
2011年 | 280篇 |
2010年 | 198篇 |
2009年 | 130篇 |
2008年 | 222篇 |
2007年 | 229篇 |
2006年 | 194篇 |
2005年 | 174篇 |
2004年 | 157篇 |
2003年 | 139篇 |
2002年 | 97篇 |
2001年 | 117篇 |
2000年 | 85篇 |
1999年 | 73篇 |
1998年 | 38篇 |
1997年 | 53篇 |
1996年 | 43篇 |
1995年 | 37篇 |
1994年 | 22篇 |
1993年 | 8篇 |
1992年 | 34篇 |
1991年 | 28篇 |
1990年 | 42篇 |
1989年 | 32篇 |
1988年 | 23篇 |
1987年 | 40篇 |
1986年 | 27篇 |
1985年 | 30篇 |
1984年 | 21篇 |
1983年 | 13篇 |
1981年 | 10篇 |
1980年 | 16篇 |
1979年 | 10篇 |
1978年 | 17篇 |
1977年 | 10篇 |
1976年 | 8篇 |
1975年 | 11篇 |
1970年 | 8篇 |
1967年 | 8篇 |
排序方式: 共有4218条查询结果,搜索用时 9 毫秒
1.
Iclea Rocha Gama Euclides Marinho Trindade-Filho Suzana Lima Oliveira Nassib Bezerra Bueno Isabelle Tenório Melo Cyro Rego Cabral-Junior Elenita M. Barros Jaqueline A. Galvão Wanessa S. Pereira Raphaela C. Ferreira Bruna R. Domingos Terezinha da Rocha Ataide 《Metabolic brain disease》2015,30(1):93-98
2.
3.
4.
Rubens Souza de OLIVEIRA Lanna Jamile Corrêa da COSTA Fernanda Atanaena Gon?alves de ANDRADE Wilson UIEDA Luzia Fátima Alves MARTORELLI Ana Paula de Arruda Geraldes KATAOKA Elizabeth Salbé Travassos da ROSA Pedro Fernando da Costa VASCONCELOS Armando de Souza PEREIRA Ant?nio Ismael Barros do CARMO Marcus Emanuel Barroncas FERNANDES 《Revista do Instituto de Medicina Tropical de S?o Paulo》2015,57(6):497-503
The outbreaks of rabies in humans transmitted by Desmodus rotundus in 2004 and 2005,
in the northeast of the Brazilian State of Para, eastern Amazon basin, made this a
priority area for studies on this zoonosis. Given this, the present study provides
data on this phenomenon in an urban context, in order to assess the possible
circulation of the classic rabies virus (RABV) among bat species in Capanema, a town
in the Amazon basin. Bats were collected, in 2011, with mist nets during the wet and
dry seasons. Samples of brain tissue and blood were collected for virological and
serological survey, respectively. None of the 153 brain tissue samples analyzed
tested positive for RABV infection, but 50.34% (95% CI: 45.67-55.01%) of the serum
samples analyzed were seropositive. Artibeus planirostris was the most common
species, with a high percentage of seropositive individuals (52.46%, 95% CI: 52.31
52.60%). Statistically, equal proportions of seropositive results were obtained in
the rainy and dry seasons (c2 = 0.057, d.f. = 1, p = 0.88). Significantly
higher proportions of males (55.96%, 95% CI: 48.96-62.96%) and adults (52.37%, 95%
CI: 47.35-57.39%) were seropositive. While none of the brain tissue samples tested
positive for infection, the high proportion of seropositive specimens indicates that
RABV may be widespread in this urban area. 相似文献
5.
6.
Carbamazepine has been shown to enhance dopaminergic agonist behavioral effects, but not to displace [3H]spiroperidol binding. To verify if carbamazepine acts presynaptically on dopaminergic neurons, reuptake and release of [3H]dopamine were measured in rat striatal slices in vitro. It was observed that carbamazepine blocked 20% of the reuptake of [3H]dopamine, while cocaine blocked 82% of the reuptake, compared with control. Carbamazepine released 62% and tyramine released 92% of the accumulated [3H]dopamine, compared with control. It was concluded that carbamazepine acts presynaptically on striatal neurons, mainly through enhancement of dopamine release. This finding can be related to some behavioral effects described for carbamazepine; however, the importance of its effects in epileptic and manic-depressive patients remains to be clarified. 相似文献
7.
8.
AG Nettetal 《MedR Medizinrecht》2007,25(11):664-666
Abstrakt 1. Nimmt ein Patient einen ihm von seinem (Zahn-)Arzt einger?umten Exklusiv-Termin nicht wahr, obwohl er auf dessen Eigenschaft
ausdrücklich hingewiesen wurde, so hat er dem (Zahn-)Arzt den Behandlungsausfall abzüglich eines angemessenen Eigenanteils
des (Zahn-)Arztes zu ersetzen.
2. Die Ersatzpflicht tritt auch dann ein, wenn der Patient den Termin nicht in der in dem Behandlungsvertrag vorgesehenen
Frist absagt. Eine hierfür seitens des (Zahn-)Arztes bestimmte Frist von zwei Tagen vor Behandlungsbeginn stellt sich für
den Patienten grunds?tzlich auch nicht als unangemessene Benachteiligung i.S. des § 307 BGB dar.
3. Ein Anspruch des Arztes entf?llt auch bei nur mündlicher Vereinbarung nicht unter dem Gesichtspunkt des § 4 Abs. 5b BMV-Z,
denn diese Vorschrift ist teleologisch dahin zu reduzieren, dass nur zahn?rztliche Honoraransprüche aus erfolgten Behandlungen
schriftlich vereinbart werden müssen. Soweit es jedoch um einen vertraglichen Anspruch wegen einer Leistungsst?rung geht,
vermag das Schriftformerfordernis des § 4 Abs. 5b BMV-Z grunds?tzlich nicht einzugreifen. (Leits?tze des Bearbeiters) 相似文献
9.
F. Teixeira Brandt C. D. Costa Albuquerque J. W. Barros Leal 《International urogynecology journal》1997,8(6):332-335
We report on the vaginal mucosal folds (VMF) at the urethral external meatus. Resection of the VMF reduces the dispersed micturition
and other urinary symptoms.
EDITORIAL COMMENT: The investigators describe the presence of a vaginal mucosal fold (VMF) just dorsal to the urethral meatus
and its relationship to voiding abnormalities. VMF were found on physical examination in 8.9% of the clinic population, all
of whom complained of dispersed micturition, and 79% also experienced other voiding abnormalities. The complaint of dispersed
micturition was successfully treated with excision of the VMF, and the other associated symptoms were improved. This structure
should be routinely looked for on physical examination, especially in patients with voiding symptoms. Only further investigation
of this newly described entity at other centers around the world will determine the incidence of the anatomic finding and
the prevalence of associated voiding disturbances across different populations. 相似文献
10.
Early during rat thymus ontogeny, an important proportion of thymocytes
expresses IL-2R and contains IL-2 mRNA. To investigate the role of the
IL-2-IL-2R complex in rat T cell maturation, we supplied either recombinant
rat IL-2 or blocking anti-CD25 mAb to rat fetal thymus organ cultures
(FTOC) under several experimental conditions. The IL-2 treatment initially
stimulated the growth of thymocytes and, as a result, induced T cell
differentiation, but the continuous addition of IL-2 to rat FTOC, as well
as the anti-CD25 administration, resulted in cell number decrease and
inhibition of thymocyte maturation. These results indicate that immature
rat thymocytes bear functional high- affinity IL-2R and that IL-2 promotes
T cell differentiation as a consequence of its capacity to stimulate cell
proliferation. Modifications in TCR alpha beta repertoire and increased
numbers of NKR- P1+ cells, largely NK cells, were also observed in
IL-2-treated FTOC. Furthermore, IL-2-responsiveness of different thymocyte
subsets changed throughout thymic ontogeny. Immature CD4-CD8-cells
responded to IL-2 in two stages, early in thymus development and around
birth, in correlation with the maturation of two distinct waves of thymic
cell progenitors. Mature CD8+ thymocytes maximally responded to IL-2 around
birth, supporting a role for IL-2 in the increased proliferation of mature
thymocytes observed in vivo in the perinatal period. Taken together, these
findings support a role for IL-2 in rat T cell development.
相似文献