全文获取类型
收费全文 | 107篇 |
免费 | 6篇 |
专业分类
儿科学 | 5篇 |
妇产科学 | 4篇 |
基础医学 | 13篇 |
临床医学 | 13篇 |
内科学 | 14篇 |
神经病学 | 9篇 |
特种医学 | 4篇 |
外科学 | 21篇 |
综合类 | 5篇 |
预防医学 | 2篇 |
眼科学 | 3篇 |
药学 | 8篇 |
肿瘤学 | 12篇 |
出版年
2022年 | 5篇 |
2021年 | 3篇 |
2020年 | 3篇 |
2019年 | 7篇 |
2018年 | 3篇 |
2017年 | 6篇 |
2016年 | 2篇 |
2015年 | 5篇 |
2014年 | 6篇 |
2013年 | 3篇 |
2012年 | 14篇 |
2011年 | 7篇 |
2010年 | 7篇 |
2009年 | 3篇 |
2008年 | 7篇 |
2007年 | 8篇 |
2006年 | 13篇 |
2005年 | 2篇 |
2004年 | 1篇 |
2003年 | 2篇 |
2002年 | 3篇 |
1998年 | 2篇 |
1982年 | 1篇 |
排序方式: 共有113条查询结果,搜索用时 0 毫秒
1.
Morphology of the lumbar spinal canal in normal adult Turks 总被引:2,自引:0,他引:2
Pathological changes can occur in the diameters of the lumbar spinal canal. Therefore, assessing the canal size an important diagnostic procedure. Two hundred plain anterioposterior radiographs of the lumbar spine were examined. The sample consisted of 100 males and 100 females. The transverse diameter of the bony spinal canal (interpedicular distance), which was measured as the minimum distance between the medial surfaces of the pedicles of a given vertebra, was measured. In addition, the transverse diameter of the vertebral body, which was measured as the minimum distance across the waist of the vertebra, was measured. The distances were measured to the nearest one tenth of a millimetere using a Vernier caliper. At all levels (L1 - L5) the transverse diameters of the lumbar spinal canal were approximately 1 - 1.5 mm higher in males than in females. The intersegmental differences increased proximodistally, in both sexes. The ratio of the transverse diameter canal to the width of the vertebra ranged from 0.55 to 0.60 mm in both sexes. The distribution of the different lumbar canal types were 47% A, 42% B, 11% C. Additionally, subtypes were determined and classified. 相似文献
2.
3.
Fatemeh Eghbalian Lotfollah Karimi Roya Raeisi Ayda Hasanpour Dehkordi Hamid Bouraghi 《Osong Public Health and Research Perspectives》2022,13(3):174
In neonates, bilirubin tends to be deposited in body tissues, especially the skin and mucous membranes. Jaundice is an early symptom of bilirubin excretion disorders. Therefore, the aim of this study was to investigate the effect of clofibrate on reducing neonatal jaundice. In this systematic review, international databases, including PubMed, Scopus, Web of Science, Embase, Cochrane, and Google Scholar, were searched without time and language restrictions. The reference lists of all studies ultimately included were manually searched. In the 17 articles reviewed, with a sample size of 665 people published between 2005 and 2019, the average weight of the neonates varied from 2,186 g to 4,000 g. Furthermore, the average age of neonates varied from 2 days to 9 days. Four doses of clofibrate (25, 30, 50, 100 mg/kg of neonatal body weight) were used. The bilirubin level of neonates significantly decreased in the intervention group 24, 36, 48, and 72 hours after the start of treatment. Clofibrate administration decreased total serum bilirubin, especially from the second day onwards, and also reduced hospitalization time, hospital costs, and side effects from hospitalization. 相似文献
4.
MH Esmaeili M Movahedi A Faraji H Haghdoost-Yazdi 《Neurotoxicology and teratology》2012,34(5):489-494
β-Carbolines (BCs) are considered to be endogenous toxins and have been proposed as possible causative candidates inducing Parkinson's disease (PD). However, there is controversy about the effect and also effective dose of these compounds in the etiology of PD. This study was designed to further examine the effect of norharman (NH), a BC which in mammalian brain occurs at high levels in the substantia nigra, on the development of Parkinsonism-like behaviors in rats. A small amount (4μl) of NH solution at 2 or 200ng/ml was unilaterally injected into either striatum or substantia nigra (SN) by stereotaxic surgery. The development of Parkinsonism was assessed by three conventional behavioral tests, compared to the effects of unilateral 6-hydroxydopamine (6-OHDA) - induced lesions in the nigrostriatal pathway. An apomorphine-induced rotational test revealed no Parkinsonism-like behavior in the NH treated groups. However, rats that received the high concentration of NH into their SN showed significant biased swings in the elevated body swing test. In a rotarod test, NH treated groups showed relatively weak motor performance and their learning patterns were close to that of the 6-OHDA treated rats. Considering that the rotational test is only valid in animals with severe Parkinsonism, but time spent on the rotating rod correlates inversely with severity of Parkinsonism, our results indicate that a single exposure to low amounts of NH is effective in producing moderate Parkinsonism-like behavioral symptoms, possibly through a neurotoxic effect of this agent on the SN dopaminergic neurons. 相似文献
5.
Objectives
To determine the effect of breastfeeding education provided to fathers on breastfeeding rates and paternal-infant attachment.Methods
117 couples with their infants with the inclusion criteria: knowledge of reading, writing and speaking Turkish; living in the Turkish Republic of North Cyprus until their infants were six months old; and infants having no health problems preventing the early initiation of breastfeeding. Participants were divided into 3 groups (2 experimental and 1 control). Breastfeeding education was provided to the mothers (20 min/d) in the first group (n=38) and to the mothers and fathers in the second group (n=39) (20 min/d/parent) until they were discharged from the hospital. This education was supplemented by a training booklet. The parents and their infants were followed until the infants were six months old. Exclusive breastfeeding rates and Paternal-Infant Attachment Scale scores at six months were main outcome measures.Results
Exclusive breastfeeding rates (56.4%, 33.3% and 12.8%; P<0.001) and mean (SD) Paternal-Infant Attachment Scale scores [89.51(7.05), 82.37 (12.80) and 73.38 (18.67); P<0.001] were highest in the group where education was provided to both mother and father.Conclusions
Providing breastfeeding education to fathers increases exclusive breastfeeding rates and strengthens paternal attachment.6.
Alexandre Kanashiro Thais Oliveira de Lucena Leoncio Ayda Henriques Schneider Hélio Rocha Alves Gabriel Shimizu Bassi Sabrina Graziani Veloso Dutra Fernando de Queiróz Cunha Luis Ulloa David do Carmo Malvar 《Pharmacological reports : PR》2019,71(6):1095-1103
BackgroundThe regulation of the immune system by the sympathetic nervous system is allowing the design of novel treatments for inflammatory disorders such as arthritis. In this study, we have analyzed the effects of α- and β-adrenoceptor agonists injected subcutaneously, intrathecally, or intra-articularly in zymosan-induced arthritis.MethodsMurine arthritis was induced by intra-articular (knee joint) injection of zymosan. α1 (phenylephrine), α2 (clonidine), β1 (dobutamine), or β2 (salbutamol)-adrenoceptor agonists were injected subcutaneously (sc), intrathecally (it), or intra-articularly (ia) to activate peripheral, spinal, or intra-articular adrenoceptors and to study their effects on articular edema formation and neutrophil migration into the synovial cavity.ResultsTreatments with phenylephrine did not affect the edema formation, but it increased neutrophil migration when injected subcutaneously (155.3%) or intra-articularly (187.7%). Treatments with clonidine inhibited neutrophil migration (59.9% sc, 68.7% it, 42.8% ia) regardless of the route of administration, but it inhibited edema formation only when injected intrathecally (66.7%) or intra-articularly (36%) but not subcutaneously. Treatments with dobutamine inhibited both edema (42.0% sc, 69.5% it, 61.6% ia) and neutrophil migration (28.4% sc, 70.3% it, 82.4% ia) in a concentration dependent manner. Likewise, all the treatments with salbutamol also inhibited edema formation (89.9% sc, 62.4% it, 69.8% ia) and neutrophil migration (76.6% sc, 39.1% it, 71.7% ia).ConclusionWhereas the β-adrenoceptor agonists induced anti-inflammatory effects regardless of their route of administration, α1- and α2-adrenoceptor agonists induced either pro- and anti-inflammatory effects, respectively. 相似文献
7.
Kari-Pekka Skarp Ayda Shams Hanna Montelin Pernilla Lagerbäck Thomas Tängdén 《International journal of antimicrobial agents》2019,53(1):74-79
This study aimed to evaluate the potential synergistic and bactericidal effects of mecillinam in combination with amoxicillin and clavulanic acid against extended-spectrum β-lactamase (ESBL)-producing Escherichia coli. Eight clinical E. coli isolates with varying susceptibility to mecillinam [minimum inhibitory concentrations (MICs) of 0.125 mg/L to >256 mg/L] and high-level resistance to amoxicillin (MICs > 256 mg/L) were used. Whole-genome sequencing was performed to determine the presence of β-lactamase genes and mutations in the cysB gene. The activities of single drugs and the combinations of two or three drugs were tested in 24-h time–kill experiments. Population analysis was performed for two strains before and after experiments. Only one strain had a mutation in the cysB gene resulting in an amino acid substitution. With the two-drug combinations, initial killing was observed both with mecillinam and amoxicillin when combined with clavulanic acid. Synergy was observed with mecillinam and clavulanic acid against one strain and with amoxicillin and clavulanic acid against three strains. However, following significant re-growth, a bactericidal effect was found only with amoxicillin and clavulanic acid against two strains. Pre-existing subpopulations with elevated mecillinam MICs were detected before experiments and were selected with mecillinam alone or in two-drug combinations. In contrast, the three-drug combination showed enhanced activity with synergy against six strains, a bactericidal effect against all eight strains, and suppression of resistance during 24-h antibiotic exposure. This combination may be of clinical interest in the treatment of urinary tract infections caused by ESBL-producing E. coli. 相似文献
8.
Background
Activation of the ras genes or association with human papillomavirus infection have been extensively studied in colorectal cancer. However, the correlation between K-ras mutations and HPV in colorectal cancer has not been investigated yet. In this study we aimed to investigate the presence of K-ras mutations and their correlation with HPV infection in colon cancer. 相似文献9.
Tekok-Kilic A Benedict RH Weinstock-Guttman B Dwyer MG Carone D Srinivasaraghavan B Yella V Abdelrahman N Munschauer F Bakshi R Zivadinov R 《NeuroImage》2007,36(4):1294-1300
The primary goal of this study was to investigate associations between regional gray matter (GM) atrophy and neuropsychological function in multiple sclerosis (MS), while accounting for the influence of central brain atrophy (i.e. third ventricle enlargement). Using a cross-sectional design, we studied 59 MS patients with brain MRI and neuropsychological testing. Regional gray matter fractions (rGMFs) were calculated from MRI images for 11 homologous brain areas using the semiautomatic brain region extraction (SABRE) technique. Neuropsychological testing followed consensus panel guidelines and included tests emphasizing episodic memory, working memory and processing speed. The analytic approach was stepwise linear regression, with forward selection and p<0.05 threshold for significance. Consistent with previous research, there were significant correlations between third ventricle width and neuropsychological tests. Stepwise linear regression analyses controlling for third ventricle width retained rGMFs obtained from specific regions within the prefrontal cortex. Left frontal atrophy was associated with tests emphasizing auditory/verbal memory. Right frontal atrophy was associated with impairment in visual episodic and working memory. For the first time, we show an independent relationship between cortical atrophy and cognitive impairment after accounting for the effects of central atrophy. 相似文献
10.
Ayda Turkoz Aysu Kocum H. Evren Eker Hacer Ulgen Mustafa Uysalel Gulnaz Arslan 《Journal of anesthesia》2010,24(1):43-48