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排序方式: 共有480条查询结果,搜索用时 370 毫秒
1.
Rebecca Voltan Arianna Castaldello Egidio Brocca-Cofano Rita De Michele Chiara Triulzi Giuseppe Altavilla Luisa Tondelli Michele Laus Katia Sparnacci Eva Reali Riccardo Gavioli Barbara Ensoli Antonella Caputo 《Vaccine》2009
Cationic block copolymers spontaneously assemble via electrostatic interactions with DNA molecules in aqueous solution giving rise to micellar structures that protect the DNA from enzymatic degradation both in vitro and in vivo. In addition, we have previously shown that they are safe, not immunogenic and greatly increased antigen-specific CTL responses following six intramuscular inoculations of a very low dose (1 μg) of the vaccine DNA as compared to naked DNA. Nevertheless, they failed to elicit detectable humoral responses against the antigen. To gain further insight in the potential application of this technology, here we show that a shorter immunization protocol based on two DNA intramuscular inoculations of 1 μg of DNA delivered by these copolymers and a protein boost elicits in mice broad (both humoral and cellular) and long-lasting responses and increases the antigen-specific Th1-type T cell responses and CTLs as compared to priming with naked DNA. These results indicate that cationic block copolymers represent a promising adjuvant and delivery technology for DNA vaccination strategies aimed at combating intracellular pathogens. 相似文献
2.
Egidio L. Romano res Soyano Ramón F. Montaño Murray Ratcliffe Marilyn Olson Guillermo Suarez Nelly Martínez and Geoffrey Worstey 《Vox sanguinis》1994,66(3):194-199
Thirteen infants, 10 with A-O and 3 with B-O hemolytic disease of the newborn (ABO-HDN), were treated with synthetic A or B blood group trisaccharides (ATS, BTS) which cause dissociation of maternal antibody bound to infant red cells. The clinical outcome was compared with that of a control group of 21 infants treated with phototherapy during the preceding year. Exchange transfusion was required in 2 out of 13 infants in the experimental group and in 7 in the control group. A randomized prospective controlled study is necessary to confirm these results. 相似文献
3.
Maffei A Prestori F Shibuki K Rossi P Taglietti V D'Angelo E 《Journal of neurophysiology》2003,90(4):2478-2483
Nitric oxide (NO) is a candidate retrograde messenger in long-term potentiation (LTP). The NO metabolic pathway is expressed in the cerebellar granule cell layer but its physiological role remained unknown. In this paper we have investigated the role of NO in cerebellar mossy fiber-granule cell LTP, which has postsynaptic N-methyl-d-aspartate (NMDA) receptor-dependent induction. Pre- and postsynaptic current changes were simultaneously measured by using extracellular focal recordings, and NO release was monitored with an electrochemical probe in P21 rat cerebellar slices. High-frequency mossy fiber stimulation induced LTP and caused a significant NO release (6.2 +/- 2.8 nM; n = 5) in the granular layer that was dependent on NMDA receptor as well as on nitric oxide synthase (NOS) activation. Preventing NO production by perfusing the NOS inhibitor 100 microM NG-nitro-l-arginine (L-NNA), blocking extracellular NO diffusion by 10 microM MbO2, or inhibiting the NO target guanylyl cyclase (sGC) with 10 microM 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-dione (ODQ) prevented LTP. Moreover, the NO donor 10 microM 2-(N,N-diethylamino)-diazenolate-2-oxide.Na (DEA-NO) induced LTP, which was mutually occlusive with LTP generated by high-frequency stimulation, prevented by ODQ, and insensitive to NMDA channel blockade (50 microM APV + 25 microM 7-Cl-kyn) or interruption of mossy fiber stimulation. Thus NO is critical for LTP induction at the cerebellar mossy fiber-granule cell relay. Interestingly, LTP manipulations were accompanied by consensual changes in the presynaptic current, suggesting that NO acts as a retrograde signal-enhancing presynaptic terminal excitability. 相似文献
4.
5.
Dr. Egidio Cappelli 《Archives of dermatological research》1940,181(1):12-27
Zusammenfassung Bei einer 33jährigen Frau mit einer seit langer Zeit bestehenden multiplen und in verschiedenen Gebieten lokalisierten Lymphadenitis erscheinen sekundär und lange Zeit nach der Erkrankung der Lymphknoten Hautgebilde, die klinisch dem Sarcoma idiopathicum haemorrhagicum Kaposi zugeteilt werden können. Die histologische Untersuchung beweist die Gleichwertigkeit beider Prozesse in den Lymphknoten und der Haut, bei dem es sich um Bindegewebsgeschwülste mit der Tendenz zu vasculären hämangiomatösen Bildungen handelt und zeigt besonders in Hinblick auf die Haut die engen histologischen Verbindungen mit derKaposischen Erkrankung auf.Der Verfasser glaubt sich nach eingehender Darlegung der histologischen Eigenheiten der Lymphknotenerkrankung zu dem Schluß berechtigt, daß diese in das Bild des Sarcoma idiopathicum haemorrhagicum Kaposi einmünden und daß daher diese Erkrankung ursprünglich auch in den Lymphknoten beginnen kann. Das sekundäre Auftreten in der Haut bestätigt durch seine histologischen und klinischen Eigenheiten die aufgestellte Diagnose.Mit 10 Textabbildungen. 相似文献
6.
7.
Somatic symptom disorder is a condition in which a patient's subjective report of physical symptoms is associated with distress; disruption of day‐to‐day functioning; or disproportionate thoughts, feelings and behaviours regarding the symptoms, whether or not they are associated with an identified medical condition. While somatic symptom disorder affects a considerable proportion of children and adolescents presenting to the emergency department (ED), it has not been well investigated in the ED literature, nor is there much formal training in, or guidelines for, how to care for affected patients in the ED. The aim of this paper is to highlight the historical clues commonly reported by these patients in order to try to help the emergency physicians recognise patients affected by a somatic symptom disorder. Adolescent age, the presence of daily subjective symptoms presenting daily for weeks or months, a long medical history record, an extensive diagnostic workup and, most of all, disproportionate functional impairment related to the symptoms are all features strongly suggestive of this disorder. Emergency physicians should become used to taking advantage of these clues to formulate a positive diagnosis of somatic symptom disorder according to the most recent diagnostic criteria. Emergency physicians have the unique opportunity to contribute to the correct diagnosis and treatment of these patients and to have a positive impact on their prognosis. 相似文献
8.
Pierluigi Marzuillo Stefano Guarino Egidio Barbi 《European journal of pediatrics》2014,173(4):415-425
Paracetamol (acetaminophen) is one of the most popular and widely used drugs for the treatment of pain and fever in children. This drug has multiple mechanisms of action, but its pharmacodynamic is still not well known. The central nervous system is the main site of action and it mirrors the paracetamol effect compartment. The recommended dosages and routes of administration should be different whether paracetamol is used for the treatment of pain or fever. For example, the rectal route, while being efficacious for the treatment of fever, should be avoided in pain management. Paracetamol is a safe drug, but some clinical conditions and concomitant drugs, which are frequent in clinical practice, may increase the risk of paracetamol toxicity. Therefore, it is important to optimize its administration to avoid overdoses and maximize its effect. The principal mediator of the paracetamol toxicity is the N-acetyl-p-benzo-quinone imine (NAPQI), a toxic product of the paracetamol metabolism, which could bind cysteine groups on proteins forming paracetamol–protein adduct in the liver. Conclusion: Although frequently prescribed, the concept of “effect compartment concentration” and the possible co-factors that could cause toxicity at recommended doses are not familiar to all pediatricians and general practitioners. We reviewed the literature concerning paracetamol mechanisms of action, we highlighted some relevant pharmacodynamic concepts for clinical practice, and we summarized the possible risk factors for toxicity at therapeutic dosages. 相似文献
9.
Claudia Eleni Goffredo Grifoni Alessandra Di Egidio Roberta Meoli Claudio De Liberato 《Parasitology research》2014,113(3):1247-1250
In Europe, the red fox (Vulpes vulpes) is considered the reservoir of Angiostrongylus vasorum, nematode residing in the pulmonary arteries and right heart of dogs and many species of wild carnivores. Italy is considered one of the European countries where this nematode is actually spreading. Between May 2007 and November 2013, 62 foxes found dead in Central Italy were necropsied. Right heart and pulmonary arteries were opened and checked for the presence of adult parasites. Impression smears from sectioned lungs were examined for the presence of first-stage larvae, and samples of lungs were processed for histological examination. In order to detect eventual disseminated infections, samples of heart, pulmonary lymph nodes, liver, kidneys, and brain of foxes positive for A. vasorum at necropsy or lungs histological examination were processed for histological examination. An overall prevalence of 43.5 % was recorded. Light, mild, and severe lung lesions were detected in 33.3, 22.2, and 25.9 % of infected animals, respectively. Severe lesions were more frequent in animals younger than 12 months. In five infected foxes (18.5 %), no gross lesions were observed, while for three animals, angiostrongylosis was considered the cause of death. A case of disseminated angiostrongylosis was detected and another one was suspected. This is the firs report of disseminated angiostrongylosis in the fox. 相似文献
10.
Marina Dyskant Mochcovitch Antonio Egidio Nardi Adriana Cardoso 《Revista brasileira de psiquiatria (S?o Paulo, Brazil : 1999)》2012,34(3):342-351
IntroductionSince the first publication of Cloninger's psychobiological model of personality, the relationship between temperament and character dimensions and psychiatric disorders has been widely studied. The exact nature of this interaction, however, is still unclear. Different models have been proposed (state-dependency, vulnerability, continuous spectrum etc).ObjectiveTo analyze the relationship between temperament and character dimensions with depression and panic disorder.MethodSystematic review on interventional studies published up until December 2011 on MEDLINE and ISI databases. Also, a brief review on genetic studies is hereby undertaken, aiming to discuss the gene-environment interaction in relation to this topic.Results:Thirteen studies were included: 10 related to depression and 3 to panic disorder (or unspecific anxiety symptoms). All of them showed association between high harm avoidance (HA) and low self-directedness (SD) with depression and anxiety symptoms. Longitudinal studies demonstrated that these traits may not be just state-dependent.Conclusions:HA and SD dimensions are associated with both the occurrence of depressive and anxiety symptoms. There is also some evidence to suggest that high HA and low SD indicates susceptibility to depression. Longitudinal studies are not sufficient to affirm the same about panic disorder up to the present moment. 相似文献