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91.
92.
本文论述了分子筛制氧机的工作原理、主要组成部分及作用.强调了应严格遵守规章制度,认真做好制氧机的维护保养,加强质量监控和管理.同时阐述了医院在选购制氧系统时要综合分析影响其能耗的因素,在保证氧气产量和纯度的前提下,尽量降低系统能耗,提高长期运行的经济效益. 相似文献
93.
IA Brazil ER de Bruijn BH Bulten AK von Borries JJ van Lankveld JK Buitelaar RJ Verkes 《Neuropsychopharmacology》2009,65(2):137-143
BACKGROUND: One of the most recognizable features of psychopathy is the reduced ability to successfully learn and adapt overt behavior. This might be due to deficient processing of error information indicating the need to adapt controlled behavior. METHODS: Event-related potentials (ERPs) and behavioral components of error-monitoring processes were investigated in 16 individuals with psychopathy and in 18 healthy subjects. A letter version of the Eriksen flanker task was used in two conditions. The first condition (normal condition) required participants to press one of two buttons depending on the identity of the target stimulus. The second condition (signaling condition) required them to signal each time they had committed an error by making a second press on a signaling button. Early stages of error monitoring were investigated by using the error-related negativity (ERN/Ne) and post-error slowing as indexes. Later stages were explored by examining the error positivity (Pe) and signaling rates. RESULTS: Both groups showed similar ERN amplitudes and amounts of post-error slowing. The psychopathic group exhibited both reduced Pe amplitudes and diminished error-signaling rates compared with the control group. CONCLUSIONS: Individuals with psychopathy show intact early error processing and automatic behavioral adaptation but have deficits in later stages of error processing and controlled behavioral adaptation. This is an indication that individuals with psychopathy are unable to effectively use error information to change their behavior adequately. 相似文献
94.
Hyperinsulinaemia/euglycaemia therapy (HIET) consists of the infusion of high-dose regular insulin (usually 0.5 to 1 IU/kg per hour) combined with glucose to maintain euglycaemia. HIET has been proposed as an adjunctive approach in the management of overdose of calcium-channel blockers (CCBs). Indeed, experimental data and clinical experience, although limited, suggest that it could be superior to conventional pharmacological treatments including calcium salts, adrenaline (epinephrine) or glucagon. This paper reviews the patho-physiological principles underlying HIET. Insulin administration seems to allow the switch of the cell metabolism from fatty acids to carbohydrates that is required in stress conditions, especially in the myocardium and vascular smooth muscle, resulting in an improvement in cardiac contractility and restored peripheral resistances. Studies in experimental verapamil poisoning in dogs have shown that HIET significantly improves metabolism, haemodynamics and survival in comparison with conventional therapies. Clinical experience currently consists only of a few isolated cases or short series in which the administration of HIET substantially improved cardiovascular conditions in life-threatening CCB poisonings, allowing the progressive discontinuation of vasoactive agents. While we await further well-designed clinical trials, some rational recommendations are made about the use of HIET in severe CBB overdose. Although the mechanism of action is less well understood in this condition, some experimental data suggesting a potential benefit of HIET in β-adrenergic blocker toxicity are discussed; clinical data are currently lacking. 相似文献
95.
Mehmet KARAKA Aygül TURAÇ-BÇER Macit LKT Murat DURDU Gülah SEYDAOLU 《The Journal of dermatology》2009,36(7):377-382
Pityriasis versicolor is a common superficial mycoses of the skin. It is now recognized that the causative organisms of this infection are different species of Malassezia . The aim of this study was to determine the distribution of Malassezia species in patients with pityriasis versicolor in Adana, Turkey. In total, 97 patients positive for Malassezia elements, namely, yeast cells and short hyphae in microscopic examination, were included in the study. All samples were inoculated in plates containing modified Dixon's medium. However, only 44 of the patients (45.4%) showed Malassezia spp. in culture. Malassezia globosa (47.7%) was the most commonly isolated species followed by Malassezia furfur (36.4%) and Malassezia slooffiae (15.9%). Mixed Malassezia species were not isolated. In conclusion, M. globosa was found to be the predominant PV isolate in Adana, Turkey. 相似文献
96.
Specimens of excised tissue from the porta hepatis in 26 infants with extrahepatic biliary atresia undergoing hepatic portoenterostomy were analysed histologically for the presence and size of biliary ductules. No correlation could be found between the establishment of effective biliary drainage and the number or size of biliary ductules. it is suggested that prognosis after surgery may be related to the intrahepatic lesion and age of the child at operation rather than to the histology of the extrahepatic bile duct remnants. 相似文献
97.
The response of bronchiolitis to bronchodilator drugs is controversial. The present study was designed to evaluate the efficacy of oral or metered dose inhaler (MDI) salbutamol using a coffee cup as a spacer device in bronchiolitis. In the trial, 31 hospitalized patients between 6 and 24 months of age, who exhibited the first episode of acute bronchiolitis without any other predisposing illness such as cystic fibrosis, congenital heart disease etc., were randomly assigned to receive oral salbutamol (n=11, 0.1 mg/kg per dose, four times a day), or MDI salbutamol (n = 12, 200 μg per dose, every 3 h) or formed the control group without any bronchodilator therapy (n = 8). All of the patients were given supplemental oxygen as needed and adequate hydration was maintained. The patients were evaluated with clinical symptom scores. There were no differences in the beneficial or side effects of salbutamol, or the number of days in hospital between the treatment groups and the control group. It was concluded that there is no beneficial effect in using bronchodilators in infants with bronchiolitis. Supplemental oxygen and maintenance of normal hydration may be adequate. 相似文献
98.
ER De Oliveirae Suva L. Haddad PO Kwiterovich Jr SE Humphries INM Day 《Clinical genetics》1998,53(5):375-378
Analysis of newly identified microsatellite polymorphisms flanking the low density lipoprotein receptor (LDLR) gene was undertaken in the kindred of a child with apparent homozygous LDLR deficiency. The applicability of these approaches to prenatal diagnosis is considered and compared with previous approaches applying functional studies of the LDLR in amniotic fibroblasts. 相似文献
99.
Controlled ovarian hyperstimulation and intrauterine insemination for treating male subfertility: a controlled study 总被引:5,自引:10,他引:5
Cohlen BJ; te Velde ER; van Kooij RJ; Looman CW; Habbema JD 《Human reproduction (Oxford, England)》1998,13(6):1553-1558
In this randomized crossover trial we investigated whether the use of
controlled ovarian hyperstimulation with low-dose human menopausal
gonadotrophin in couples with male subfertility leads to a higher
probability of conception when intrauterine insemination (IUI) is applied.
We also investigated whether the efficacy of IUI in natural or stimulated
cycles was related to the severity of male subfertility. Seventy-four
couples completed 308 treatment cycles. Thirteen pregnancies occurred after
IUI in a natural cycle (pregnancy rate per completed cycle: 8.4%) and 21
after IUI in a stimulated cycle (pregnancy rate per completed cycle:
13.7%). The difference between the two treatment modalities was not
statistically significant. The efficacy of IUI in stimulated cycles was
related to the severity of the semen defect. In couples with a total motile
sperm count < 10 x 10(6), ovarian stimulation did not improve treatment
outcome, while it did in couples with a total motile sperm count > or =
10 x 10(6). Compared with the expected chance of conceiving spontaneously
without treatment, both natural and stimulated cycles improved the
probability of conception. We conclude that, for the group as a whole,
ovarian stimulation did not improve the probability of conception. However,
in couples with less severe semen defects, ovarian stimulation did improve
the probability of conception.
相似文献
100.