全文获取类型
收费全文 | 1004篇 |
免费 | 155篇 |
专业分类
耳鼻咽喉 | 7篇 |
儿科学 | 41篇 |
妇产科学 | 82篇 |
基础医学 | 190篇 |
口腔科学 | 58篇 |
临床医学 | 99篇 |
内科学 | 159篇 |
皮肤病学 | 22篇 |
神经病学 | 44篇 |
特种医学 | 52篇 |
外科学 | 160篇 |
综合类 | 35篇 |
一般理论 | 1篇 |
预防医学 | 77篇 |
眼科学 | 12篇 |
药学 | 55篇 |
中国医学 | 2篇 |
肿瘤学 | 63篇 |
出版年
2021年 | 9篇 |
2019年 | 6篇 |
2018年 | 16篇 |
2017年 | 13篇 |
2016年 | 15篇 |
2015年 | 22篇 |
2014年 | 27篇 |
2013年 | 29篇 |
2012年 | 51篇 |
2011年 | 53篇 |
2010年 | 36篇 |
2009年 | 21篇 |
2008年 | 35篇 |
2007年 | 59篇 |
2006年 | 47篇 |
2005年 | 50篇 |
2004年 | 34篇 |
2003年 | 50篇 |
2002年 | 29篇 |
2001年 | 34篇 |
2000年 | 33篇 |
1999年 | 21篇 |
1998年 | 24篇 |
1997年 | 20篇 |
1996年 | 10篇 |
1995年 | 19篇 |
1994年 | 17篇 |
1993年 | 24篇 |
1992年 | 22篇 |
1991年 | 16篇 |
1990年 | 19篇 |
1989年 | 28篇 |
1988年 | 31篇 |
1987年 | 29篇 |
1986年 | 17篇 |
1985年 | 18篇 |
1984年 | 11篇 |
1983年 | 14篇 |
1982年 | 18篇 |
1981年 | 14篇 |
1980年 | 6篇 |
1979年 | 16篇 |
1978年 | 17篇 |
1976年 | 5篇 |
1975年 | 7篇 |
1974年 | 8篇 |
1973年 | 7篇 |
1972年 | 6篇 |
1969年 | 6篇 |
1968年 | 5篇 |
排序方式: 共有1159条查询结果,搜索用时 0 毫秒
1.
2.
Exercise advice is a well established component of the conservative management of intermittent claudication. Supervised programmes of exercise remain relatively uncommon and are provided mainly in secondary care. This review outlines the evidence for the effectiveness of different exercise regimens and the relative benefits of exercise therapy, where comparisons have been made with medical therapy, angioplasty and surgery. 相似文献
3.
A S Lamont M S Roberts D G Holdsworth A Atherton J J Shepherd 《Anaesthesia and intensive care》1986,14(4):360-364
Recently, a family tree with a predisposition for the gene of multiple endocrine neoplasia Type 1 has been identified in Tasmania. As the surgical identification and localisation of parathyroid adenomas is facilitated by the administration of methylene blue, an opportunity has presented to measure the plasma concentration of methylene blue and methaemoglobin production. The study was undertaken to establish whether significant methaemoglobin concentrations were generated during the infusion and whether these concentrations could be related to the corresponding methylene blue concentrations. Mean peak methylene blue concentrations of 3.72 micrograms l-1, mean percentage methaemoglobin of 10.0 and a PaO2 within acceptable clinical ranges were found. No apparent relationship between methylene blue concentration and methaemoglobin production was found. 相似文献
4.
5.
6.
The development and introduction of anti-oxytocic tocolytics 总被引:1,自引:0,他引:1
Ronald F. Lamont 《BJOG : an international journal of obstetrics and gynaecology》2003,110(S20):108-112
7.
A. H. Davies T. R. Magee J. F. Thompson Z. Varga P. M. Lamont R. N. Baird M. Horrocks 《Annals of the Royal College of Surgeons of England》1993,75(3):178-180
During femorodistal bypass angioscopy can be used in vein graft preparation allowing valve lysis and the identification of tributaries under direct vision. A total of 30 patients have undergone angioscopic assisted femorodistal bypass using either an Olympus or Stortz system. Nineteen patients have undergone full vein mobilisation and valve lysis under direct vision. Eleven patients had in situ bypass with ligation of tributaries, identified by the angioscope, through small stab incisions. No evidence of fistula or retained valve cusps was found by subsequent duplex scanning and arteriography. One of these grafts failed at 6 days due to an unrecognised outflow stenosis. The mean hospital stay after operation for this latter group of patients was 5.2 days (range 4.4-6.0 days) compared with 9.5 days (8.6-10.3 days) in a historical group of 30 patients (P < 0.001). Angioscopy is a useful aid in the performance of femorodistal bypass. Early experience suggests that hospital stay may be reduced by angioscope assisted in situ femorodistal bypass because of the minimal dissection involved. 相似文献
8.
A 69 year old man was admitted for investigation of right sided pleuritic chest pain and dyspnoea, both of which began suddenly four days before admission. Acute pulmonary embolism was diagnosed. Six months after discharge while on warfarin he died. Necropsy found a 50 mm diameter myxoid tumour arising on the right atrial side of the interatrial septum. This lesion may have been discovered earlier by echocardiography although there were no clear indications for this investigation. Presentation was that of recurrent pulmonary embolism with no obvious source or cause of thrombosis. Patients who are thought to have idiopathic pulmonary embolism should undergo early echocardiography to exclude the rare but treatable diseases of the right heart that may be responsible
Keywords: atrial myxoma 相似文献
Keywords: atrial myxoma 相似文献
9.
Everyday memory following traumatic brain injury 总被引:1,自引:0,他引:1
G. Kinsella D. Murtagh A. Landry K. Homfray M. Hammond L. O'Beirne L. Dwyer M. Lamont J. Ponsford 《Brain injury : [BI]》1996,10(7):499-508
Residual memory deficits may represent a problem to the everyday functioning of a large number of people, including those who have sustained traumatic brain injury (TBI). The present exploratory study sought to investigate the interrelationships between subjective memory reports, performance on traditional memory tests, and performance on tests of prospective memory. These interrelationships were contrasted between a group of 24 adults who had sustained TBI and a group of 24 matched control subjects. Prospective memory was hypothesized to be indicative of everyday memory functioning. The results provided preliminary evidence that prospective memory tests are sensitive to TBIrelated neurological impairment and, in comparison to traditional tests, may be better indicators of functional memory capacity. This pattern was particularly true for control subjects, possibly because TBI subjects had difficulties in evaluating their memory functioning. 相似文献
10.
A specific and sensitive radioimmunoassay for rat C-peptide 总被引:1,自引:0,他引:1
Jones O. Akpan Lamont G. Weide Ronald L. Gingerich 《Journal of gastrointestinal cancer》1993,13(2):87-95
A sensitive and specific radioimmunoassay for rat serum C-peptide (RCP) has been developed and validated using a guinea pig
anti-rat C-peptide antibody to synthetic rat C-peptide. Negligible crossreactivity (<0.01%) to human proinsulin was observed,
whereas human insulin, human pancreatic polypeptide (hPP), porcine insulin, porcine C-peptide, bovine insulin, rat insulin,
porcine-PP, and glucagon, respectively, did not produce measurable displacement of RCP tracer. Human C-peptide even in a supraphysiological
concentration range crossreacted poorly (<0.1%). The sensitivity limit of the assay calculated at ±3 standard deviations was
24.2pM (0.07 ng/mL). RCP standard concentrations ranged from 25–1600pM. The intraassay-and between assay-coefficient of variations
(CV) were 3.5–6.1% and 4.1–9.5%, respectively. The mean percentage recovery of RCP added to rat serum samples was 100.8±2%.
Serum volume dilution from 25 to 100 μL did not significantly alter the expected RCP level. Migration of rat serum C-peptide
and that of synthetic RCP were identical in a Sephadex G-50 chromatographic analysis. The mean fasting and postprandial plasma
RCP levels in normal rats were 102±15pM and 485±75pM, respectively. RCP levels following intravenous glucose tolerance test
in diabetic and nondiabetic rats were consistent with expected patterns.
In conclusion, we have developed and validated a rat C-peptide assay that is sensitive, simple, and specific for RCP in serum.
The assay provides a reliable tool for studies of diabetes using rodent animal models. 相似文献