全文获取类型
收费全文 | 1423661篇 |
免费 | 95308篇 |
国内免费 | 2093篇 |
专业分类
耳鼻咽喉 | 22470篇 |
儿科学 | 47178篇 |
妇产科学 | 43696篇 |
基础医学 | 213479篇 |
口腔科学 | 38630篇 |
临床医学 | 115942篇 |
内科学 | 280662篇 |
皮肤病学 | 32937篇 |
神经病学 | 109930篇 |
特种医学 | 56197篇 |
外国民族医学 | 367篇 |
外科学 | 219647篇 |
综合类 | 27294篇 |
现状与发展 | 1篇 |
一般理论 | 363篇 |
预防医学 | 98840篇 |
眼科学 | 34898篇 |
药学 | 103489篇 |
1篇 | |
中国医学 | 2561篇 |
肿瘤学 | 72480篇 |
出版年
2018年 | 12340篇 |
2015年 | 14950篇 |
2014年 | 20059篇 |
2013年 | 29858篇 |
2012年 | 38232篇 |
2011年 | 40500篇 |
2010年 | 25423篇 |
2009年 | 24235篇 |
2008年 | 39680篇 |
2007年 | 42469篇 |
2006年 | 43428篇 |
2005年 | 42344篇 |
2004年 | 40649篇 |
2003年 | 38178篇 |
2002年 | 36613篇 |
2001年 | 59118篇 |
2000年 | 60477篇 |
1999年 | 51765篇 |
1998年 | 15549篇 |
1997年 | 14110篇 |
1996年 | 14698篇 |
1995年 | 14091篇 |
1994年 | 13483篇 |
1993年 | 12484篇 |
1992年 | 42679篇 |
1991年 | 41820篇 |
1990年 | 41214篇 |
1989年 | 39927篇 |
1988年 | 37208篇 |
1987年 | 36515篇 |
1986年 | 34798篇 |
1985年 | 33131篇 |
1984年 | 25006篇 |
1983年 | 21735篇 |
1982年 | 13506篇 |
1981年 | 11982篇 |
1980年 | 11150篇 |
1979年 | 23574篇 |
1978年 | 16986篇 |
1977年 | 14609篇 |
1976年 | 13683篇 |
1975年 | 15037篇 |
1974年 | 17542篇 |
1973年 | 16940篇 |
1972年 | 16018篇 |
1971年 | 14847篇 |
1970年 | 13782篇 |
1969年 | 13454篇 |
1968年 | 12529篇 |
1967年 | 11055篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
Prof. Dr. H. Delbrück 《Der Onkologe》2006,12(5):451-459
Rehabilitative and palliative measures in the follow-up care of pancreatic cancer patients will remain the dominant medical focus as long as potentially curative measures (recurrence prophylaxis, early detection and therapy of recurrence) have failed to show a significant survival benefit. Rehabilitative measures are possible for patients undergoing potentially curative as well as palliative treatment. Their aim is to alleviate the negative effects of the cancer and its therapy, not only physically, but also psychologically, socially and vocationally. The spectrum of possible somatic handicaps ranges from metabolic disorders, malnutrition and under-nutrition, as well as gastrointestinal symptoms to pain. Assistance in coping with illness, alleviating fears and depression and strengthening compliance are the main areas which are dealt with in psycho-oncology. Assessment of vocational fitness and the capacity to work depends on tumor location, whether R0 or R1 resection has taken place, the extent of pancreas resection, accompanying illnesses, whether or not adjuvant therapy has been given, and the physical condition of the patient 相似文献
82.
C G Arruda J M Aldrighi L A Bortolotto I N Alecrin J A F Ramires 《Gynecological endocrinology》2006,22(10):557-563
BACKGROUND: Arterial hypertension and postmenopausal reduction of estrogen levels may be involved in modifications of the stiffness of large arteries. OBJECTIVES: To evaluate the pulse-wave velocity (PWV) and indirectly the arterial stiffness in hypertensive postmenopausal women submitted to hormone therapy with estradiol alone or combined with norethisterone acetate. SUBJECTS: Forty-five hypertensive postmenopausal women were double-blindly, randomly assigned to three arms of treatment: placebo (group I); estradiol 2 mg/day (group II); or estradiol 2 mg/day and norethisterone acetate 1 mg/day (group III). METHODS: Arterial stiffness was assessed from PWV measurements of the common carotid and femoral arteries (CF-PWV) and the common carotid and radial arteries (CR-PWV) obtained using the automatic Complior(R) device, taken at baseline and after 12 weeks of treatment. RESULTS: After the 12-week treatment, values of CF-PWV and CR-PWV were not significantly different (p = 0.910 and p = 0.736, respectively) among the groups. Systolic blood pressure showed a positive correlation with CF-PWV in groups II and III (p = 0.02 and p < 0.001, respectively). CONCLUSIONS: PWV and arterial stiffness in postmenopausal hypertensive women did not reduce over a 12-week treatment with estradiol alone compared with the same period of treatment with estradiol combined with norethisterone acetate. 相似文献
83.
84.
Conclusions Limitation of this analysis is participation of limited centers. Though all the regions of the country are represented total
number of procedures reported are less. Isolated CABG is commonest procedure performed in 2004. Congenital surgical procedures
are more than the valvular heart disease procedure. For appropriate categorization we need standard nomenclature for various
congenital surgical procedures. 相似文献
85.
G N J Tytgat 《Acta chirurgica. Supplement》2002,(587):77-81
A true comparison of long-term medical and surgical treatment in gastro-oesophageal reflux disease (GORD) is impossible as few studies have been carried out with adequate randomisation of the patients and long-term evaluation of quality of life. In general the control of the reflux symptoms is roughly equal with medical and surgical treatment. However, surgery can cause other symptoms such as dysphagia or non-specific epigastric discomfort or pain in some patients, which reduces the overall efficacy in controlling the symptoms. Based on a cost utility analysis, Heudebert et al. came to the conclusion that medical treatment was their preferred strategy for most patients with severe erosive oesophagitis. 相似文献
86.
87.
Angiotensin Converting Enzyme Inhibitors: Animal Experiments Suggest a New Pharmacological Treatment for Alcohol Abuse in Humans 总被引:1,自引:0,他引:1
G. Spinosa MSc E. Perlanski Dipl Tech. F. H. H. Leenen MD R. B. Stewart MSc L. A. Grupp DSc 《Alcoholism, clinical and experimental research》1988,12(1):65-70
The prevalence of heavy alcohol consumption is a major problem of increasing proportions throughout the world. Although alcohol sensitizing drugs and more recently serotonin uptake inhibitors are drug interventions with some following, their long term beneficial consequences have yet to be demonstrated. In recent years, we have demonstrated that manipulating activity in the renin-angiotensin system will dramatically alter voluntary alcohol consumption in rats. Based on these findings, the present study evaluated the ability of a class of drugs known as the angiotensin converting enzyme inhibitors to reduce voluntary alcohol drinking in laboratory animals. These drugs prevent the conversion of angiotensin I to angiotensin II. They have been licensed for use in Europe and North America and are indicated in the treatment of hypertension. Our experiments showed that both captopril (Capoten, Squibb) and enalapril (Vasotec, Merck Sharpe & Dohme) can reduce alcohol drinking in both normotensive and hypertensive animals regardless of whether the pattern of intake is in a bout or of a less exaggerated nature. Furthermore, this change in alcohol intake can occur without concomitant changes in blood pressure, plasma renin activity, overall fluid balance, or the distribution and metabolism of alcohol. Taken together these findings suggest that the angiotensin converting enzyme inhibitors should be evaluated in a clinical setting for they may prove to be a useful new treatment or treatment adjunct for alcohol abuse in humans. 相似文献
88.
89.
90.