全文获取类型
收费全文 | 4577篇 |
免费 | 178篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 113篇 |
儿科学 | 115篇 |
妇产科学 | 211篇 |
基础医学 | 524篇 |
口腔科学 | 15篇 |
临床医学 | 310篇 |
内科学 | 1306篇 |
皮肤病学 | 100篇 |
神经病学 | 282篇 |
特种医学 | 82篇 |
外科学 | 585篇 |
综合类 | 40篇 |
一般理论 | 1篇 |
预防医学 | 263篇 |
眼科学 | 69篇 |
药学 | 371篇 |
中国医学 | 4篇 |
肿瘤学 | 381篇 |
出版年
2023年 | 23篇 |
2022年 | 115篇 |
2021年 | 204篇 |
2020年 | 60篇 |
2019年 | 92篇 |
2018年 | 115篇 |
2017年 | 86篇 |
2016年 | 104篇 |
2015年 | 122篇 |
2014年 | 161篇 |
2013年 | 211篇 |
2012年 | 359篇 |
2011年 | 409篇 |
2010年 | 186篇 |
2009年 | 108篇 |
2008年 | 291篇 |
2007年 | 359篇 |
2006年 | 323篇 |
2005年 | 310篇 |
2004年 | 325篇 |
2003年 | 328篇 |
2002年 | 236篇 |
2001年 | 27篇 |
2000年 | 14篇 |
1999年 | 21篇 |
1998年 | 21篇 |
1997年 | 26篇 |
1996年 | 11篇 |
1995年 | 15篇 |
1994年 | 7篇 |
1993年 | 19篇 |
1992年 | 7篇 |
1991年 | 2篇 |
1990年 | 7篇 |
1989年 | 6篇 |
1988年 | 3篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 3篇 |
1984年 | 9篇 |
1983年 | 3篇 |
1982年 | 3篇 |
1981年 | 6篇 |
1980年 | 4篇 |
1979年 | 3篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1974年 | 3篇 |
1970年 | 2篇 |
1969年 | 3篇 |
排序方式: 共有4772条查询结果,搜索用时 15 毫秒
41.
42.
Aleksander Ku Mikoaj Radziszewski Aleksandra Glina Konrad Szymaski Beata Jurecka‐Lubieniecka Edyta Pawlak‐Adamska Dorota Kula Natalia Wawrusiewicz‐Kurylonek Joanna Ku Piotr Mikiewicz Rafa Poski Marek Bolanowski Jacek Daroszewski Barbara Jarzb Artur Bossowski Tomasz Bednarczuk 《Clinical endocrinology》2019,90(2):320-327
43.
Jacek Dabert 《Acta parasitologica / Witold Stefański Institute of Parasitology, Warszawa, Poland》2014,59(2):197-205
Neumannella skorackii, a new species of the feather mite family Dermoglyphidae (Acari, Astigmata) is described from the Red-winged Tinamou Rhynchotus rufescens (Temminck, 1815) (Aves, Tinamiformes) from Paraguay and a key to all known species of the genus is provided. The phylogenetic relationships (MP analysis of 25 morphological characters) between Neumannella species along with the evolutionary history of host-parasite associations revealed by Jungle reconciliation method are reconstructed. Relatively low cospeciation contribution to the recent host-parasite associations is discovered. 相似文献
44.
Marta Katkowska Katarzyna Garbacz Wacław Kopala Justyna Schubert Jacek Bania 《APMIS : acta pathologica, microbiologica, et immunologica Scandinavica》2020,128(3):211-219
The aim of this study was to analyze the prevalence of Staphylococcus aureus in the tonsils of children subjected tonsillectomy due to recurrent tonsilitis and to determine the spa types of the pathogens, carriage of virulence genes and antimicrobial resistance profiles. The study included 73 tonsillectomized children. Bacteria, including S. aureus were isolated from tonsillar surface prior to tonsillectomy, recovered from tonsillar core at the time of the surgery, and from posterior pharynx 2–4 weeks after the procedure. Staphylococcus aureus isolates were compared by spa typing, tested for antimicrobial susceptibility and for the presence of superantigenic toxin genes (sea-seu, eta, etb, tst, lukS/lukF-PV) by multiplex polymerase chain reaction. Seventy-three patients (mean 7.1 ± 4.1 years, 61.6% male) were assessed. The most commonly isolated bacteria were S. aureus. The largest proportion of staphylococcal isolates originated from tonsillar core (63%), followed by tonsillar surface (45.1%) and posterior pharynx in tonsillectomized children (18.2%, p = 0.007). Five (6.3%) isolates were identified as MRSA (mecA-positive). Up to 67.5% of the isolates synthesized penicillinases (blaZ-positive isolates), and 8.8% displayed MLSB resistance. The superantigenic toxin genes were detected in more than half of examined isolates (56.3%). spa types t091, t084, and t002, and clonal complexes (CCs) CC7, CC45, and CC30 turned out to be most common. Staphylococcus aureus associated with RT in children showed pathogenicity potential and considerable genetic diversity, and no clones were found to be specific for this condition although further studies are needed. 相似文献
45.
46.
Justyna I. Klingemann Harald Klingemann Jacek Moskalewicz 《Substance use & misuse》2017,52(13):1765-1771
Background: Popular views of addictive substances and behaviors constitute an important research topic because these views have an impact upon the functioning of treatment systems and societal responses to substance use disorders. Methods: The analysis is based on a random sample of N = 1000 telephone interviews collected in Poland in 2013. Questionnaire measures targeted such issues as the perceived risks of addictions and beliefs about potential recovery from various types of addictions. Results: First, a coherent view of the addiction potential of various addictive substances and/or behaviors emerges, distinguishing licit drugs and types of behavior from illicit drugs. Second, treatment optimism proves to be quite high independent of the type of addictive behavior, while chances of recovery without treatment are considered less likely. Third, chances for assisted change (change with treatment) and self-change are considered largely independent of perceived addiction-related risks and are not perceived as contradictory. Conclusions: The results point to the persistence of the disease model of addiction in Poland, placing responsibility for addiction on the individual and pairing it with the expectation of undergoing specialized treatment. This individualistic approach was applied as a framework for addiction problems in the 1950s to deflect from the shortcomings of the ‘‘new socialist society.’’ Neo-liberal market reform and socioeconomic changes have provided reinforcement for this individualistic framework. 相似文献
47.
48.
Jacek Lelakowski Andrzej Kutarski Barbara Ma?ecka Jacek Majewski 《Archives of Medical Science》2011,7(1):164-167
We present a case of a 50-year-old patient with DDD pacing failure who underwent atrial lead extraction. The lead was implanted 15 years ago, and 4 months ago it dislodged into the subclavian vein following a fracture. The lead was removed via the femoral vein approach using a Cook Medical device (Byrd Femoral Workstation, Dotter basket) and pigtail catheter. 相似文献
49.
50.
Kalwak K Gorczyńska E Toporski J Turkiewicz D Slociak M Ussowicz M Latos-Grazyńska E Król M Boguslawska-Jaworska J Chybicka A 《British journal of haematology》2002,118(1):74-89
Immune reconstitution was studied prospectively in 66 children who underwent 77 haematopoietic cell transplantations (HCT): 46 autologous HCTs in 39 patients and 31 allogeneic HCTs in 27 patients. We studied the dynamic analysis of immune recovery with regard to potential factors affecting its speed, including age, type of HCT, diagnosis, graft-versus-host disease (GvHD) and cytomegalovirus (CMV) infection reactivation. Absolute counts of different lymphocyte subsets and immunoglobulin serum levels were determined in peripheral blood of patients on d -7 and +16, and then at various intervals up to 24 months post transplant. Common patterns of immune recovery after both allogeneic and autologous HCT were identified: (i) CD4+CD45RO+ peripheral T-cell expansion on d +16; (ii) inverted CD4+:CD8+ ratio from d +30 onwards; (iii) rapid natural killer (NK) cell (CD16+/-CD56+) count normalization. We observed prolonged T-cell lymphopenia (CD3+, CD3+CD4+, CD4+CD45RA+) until 24 months after autologous HCT, whereas in the allogeneic setting CD3+CD4+ cells, including naive CD45RA+ cells, returned to normal values at 9 months post transplant. Age > 10 years and coexistence of GvHD and CMV reactivation were associated with a substantial delay in T- (CD4+, including CD45RA+) and B-cell recovery after allogeneic HCT. Multidrug GvHD prophylaxis resulted in impaired T- (CD4+, CD4+CD45RA+) and B-cell reconstitution only in the early phase after allogeneic HCT (up to 4 months). Our results demonstrated that T-cell recovery was severely impaired in children after autologous HCT. It should be emphasized that specific approaches to enhance immune reconstitution are necessary to control minimal residual disease and avoid the risk of infectious complications in the autologous setting. Thymic involution after allogeneic HCT seems to be associated with age and coexistence of GvHD and CMV reactivation. 相似文献