全文获取类型
收费全文 | 44865篇 |
免费 | 4183篇 |
国内免费 | 631篇 |
专业分类
耳鼻咽喉 | 727篇 |
儿科学 | 1136篇 |
妇产科学 | 682篇 |
基础医学 | 2500篇 |
口腔科学 | 1233篇 |
临床医学 | 8488篇 |
内科学 | 6031篇 |
皮肤病学 | 825篇 |
神经病学 | 4111篇 |
特种医学 | 498篇 |
外国民族医学 | 3篇 |
外科学 | 5150篇 |
综合类 | 3864篇 |
现状与发展 | 1篇 |
一般理论 | 6篇 |
预防医学 | 6188篇 |
眼科学 | 462篇 |
药学 | 2924篇 |
73篇 | |
中国医学 | 1303篇 |
肿瘤学 | 3474篇 |
出版年
2024年 | 124篇 |
2023年 | 942篇 |
2022年 | 1537篇 |
2021年 | 2159篇 |
2020年 | 2313篇 |
2019年 | 2280篇 |
2018年 | 2074篇 |
2017年 | 2143篇 |
2016年 | 2046篇 |
2015年 | 1808篇 |
2014年 | 3123篇 |
2013年 | 3738篇 |
2012年 | 2370篇 |
2011年 | 2678篇 |
2010年 | 1880篇 |
2009年 | 2489篇 |
2008年 | 2564篇 |
2007年 | 2201篇 |
2006年 | 1946篇 |
2005年 | 1684篇 |
2004年 | 1348篇 |
2003年 | 1121篇 |
2002年 | 777篇 |
2001年 | 635篇 |
2000年 | 499篇 |
1999年 | 354篇 |
1998年 | 357篇 |
1997年 | 303篇 |
1996年 | 271篇 |
1995年 | 314篇 |
1994年 | 245篇 |
1993年 | 220篇 |
1992年 | 208篇 |
1991年 | 173篇 |
1990年 | 149篇 |
1989年 | 122篇 |
1988年 | 72篇 |
1987年 | 52篇 |
1986年 | 46篇 |
1985年 | 38篇 |
1984年 | 38篇 |
1983年 | 22篇 |
1982年 | 23篇 |
1981年 | 25篇 |
1980年 | 26篇 |
1979年 | 20篇 |
1977年 | 18篇 |
1976年 | 16篇 |
1975年 | 18篇 |
1972年 | 16篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
Reviewing the definition of "elderly" 总被引:1,自引:0,他引:1
Hajime Orimo Hideki Ito Takao Suzuki Atsushi Araki Takayuki Hosoi Motoji Sawabe 《Geriatrics & Gerontology International》2006,6(3):149-158
Conventionally, "elderly" has been defined as a chronological age of 65 years old or older, while those from 65 through 74 years old are referred to as "early elderly" and those over 75 years old as "late elderly." However, the evidence on which this definition is based is unknown. We have attempted to review the definition of elderly by analyzing data from long-term longitudinal epidemiological studies, and clinical and pathological studies that have been accumulated at the Tokyo Metropolitan Geriatric Hospital and the Tokyo Metropolitan Institute of Gerontology. Our recommendation might be a starting point in developing a strategy for a successful society by reviewing the definition of elderly based on comprehensive evidence in all aspects of social, cultural and medical sciences. 相似文献
42.
Pieter F Vos Oliver Zilch Aag Jennekens-Schinkel Miriam Salden Jasper Nuyen Menno P Kooistra M Alexander C van Huffelen Margriet M Sitskoorn 《Nephrology, dialysis, transplantation》2006,21(9):2529-2535
BACKGROUND: End-stage renal disease patients have a poor quality of life (QoL), suffer from impaired cognitive functioning, and their electroencephalogram (EEG) shows abnormalities. Conventional haemodialysis (CHD) only partially restores these disorders. Short daily haemodialysis (SDHD) has been reported to improve QoL, but effects on cognitive functioning and EEG have yet to be described. METHODS: Of the 13 patients (11 male, 2 female, age 45.5 +/- 8.1 years), 11 completed the Kidney Disease Quality of Life and Affect Balance Scale questionnaires, 10 underwent neuropsychological testing, and all 13 underwent EEG examination. For the neuropsychological assessments, nine patients (six male, three female, age 45.4 +/- 12.6) who remained on the CHD schedule, served as controls. The dialysis schedule of thrice-a-week for 4 h was changed in the experimental group to six times a week for 2 h (SDHD) over a period of 6 months and back to thrice a week for 4 h. RESULTS: When on SDHD, patients rated several dimensions of health-related QoL as being improved. After resuming CHD, one of these dimensions again decreased and several others worsened even lower than baseline. Cognitive functioning did not change when compared with control data. On the EEG, alpha peak frequency increased slightly when on SDHD but decreased significantly after resuming CHD. CONCLUSIONS: SDHD improves health-related QoL, but has no clear effects on cognitive functioning and EEG. Resumption of CHD after SDHD decreases aspects of QoL and EEG alpha peak frequency but has no effect on cognitive functioning. 相似文献
43.
Diego Garcia-Borreguero 《European journal of neurology》2006,13(S2):15-20
Restless legs syndrome (RLS) is a neurological disorder characterized by a compelling urge to move, accompanied by disturbing sensations within the legs. It is now recognized that RLS is a common condition that has a substantial impact on sleep, daily activities and quality of life. Recent data from the REST (RLS Epidemiology, Symptoms, and Treatment) general population study show that symptoms of RLS are present in approximately 7% of the general population, and that 2–3% experience moderate or severe symptoms at least twice a week. Amongst this RLS cohort, approximately 88% reported sensory disturbances and 76% reported sleep-related symptoms. These symptoms had a marked effect on everyday life, with up to 50% of the RLS cohort reporting disruption of everyday activities or personal relationships. Sleep disturbances in turn lead to impaired daytime functioning. RLS is associated with a significant impairment of quality of life, comparable with that seen in chronic medical conditions such as diabetes or depression. Given the significant burden of morbidity associated with RLS, there is a strong case for treatment in patients with troublesome symptoms. 相似文献
44.
C. Dahlf 《Clinical cardiology》1991,14(2):97-103
Quality of life is often considered to equate how the medical treatment is subjectively perceived by the patient, but ought to include the total impact of the disease/treatment on the patient's emotional, physical, and social well-being. Recently, a proposal for a generally applicable definition of quality of life in health care was put forward. This definition includes general well-being, health, and welfare (external factors), as three fundamental components, and the definition is based on both objective and subjective judgments. General well-being is exclusively and expression of the individual's subjective experience and is based on his or her own qualitative evaluation of well-being in relation to condition, treatments, and experiences. Health is according to the proposed definition, judged both objectively (signs) and subjectively (symptoms). Apart from health and well-being, there is also reason to include objectively registrable factors at the welfare level (external factors) such as the consumption of medicines, number of days in hospital, length of sick leave, need of in-home care, etc. This review is an attempt to elucidate the effects of antihypertensive pharmacotherapy on the patient's general well-being. The topic will be discussed from several points of views (e.g., aims of antihypertensive treatment, occurrence of symptoms in the population, compliance with prescribed treatment, symptom inventories, the concept of quality of life. 相似文献
45.
子宫切除术对生存质量的影响 总被引:10,自引:0,他引:10
目的:研究子宫切除术对生存质量的影响。方法:对108例因良性疾病而行腹式子宫切除术者进行前瞻性队列研究,术前及术后3,6,12个月进行调查问卷,观察症状、泌尿及胃肠功能、性功能、心理状况、社会生活状态的变化。结果:子宫切除术后3个月症状、压抑、焦虑程度减轻,社会生活状态显著提高,泌尿及胃肠功能、性功能无改变,这些改善持续至术后12个月。结论:子宫切除术可有效缓解妇科良性疾病所产生的症状,症状的缓解有利于改善生存质量。大多数因妇科良性疾病而行腹式子宫切除术的妇女,在术后1年,生存质量提高。 相似文献
46.
I. Wiklund F. Waagstein K. Swedberg Å. Hjalmarsson 《Cardiovascular drugs and therapy / sponsored by the International Society of Cardiovascular Pharmacotherapy》1996,10(3):361-368
Summary Quality of life in heart failure patients is receiving increased attention as a reflection of a treatment's potential secondary
benefit of general well-being and daily functioning. The Metoprolol in Dilated Cardiomyopathy (MDC) trial was conducted as
a large, multicenter trial to establish the effects of metoprolol on mortality and need for heart transplantation in patients
with symptomatic idiopathic cardiomyopathy. It was found that metoprolol was well tolerated, improved symptoms and cardiac
function, and prevented clinical deterioration in patients with symptomatic idiopathic dilated cardiomyopathy. Quality of
life was evaluated as a secondary endpoint in 345 out of 383 randomized patients using a disease-specific questionnaire, the
Quality of Life in Heart Failure Questionnaire, depicting physical activity, somatic symptoms, emotions, and life satisfaction.
In a comparison of patients treated with metoprolol or placebo, patients treated with metoprolol noted a significantly more
favorable response than those treated with placebo in terms of the overall treatment evaluation (p<0.05). Additionally, an
analysis of the changes from baseline to 18 months, using 95% confidence intervals, revealed that patients treated with metoprolol
showed a significant improvement from baseline to 18 months in life satisfaction, physical activity, and the total score,
while patients treated with placebo did not change at all. The improvement in quality of life was supported by the correlations
with improvement in traditional clinical parameters. 相似文献
47.
In the last few years, survival of patients infected with human immunodeficiency virus (HIV) has been improved because of a decreased incidence of some opportunistic complications attributable to prophylactic treatments and antiretroviral drugs. The impact of these agents should also be reflected in the quality of life (QoL) of patients. We have reviewed this topic with an emphasis on different types of measurements such as Q-TWIST, MOS and the Spitzer score which seem to be most appropriate for this patient population. We do not think that a special type of assessment should be designed for HIV-infected persons. It would be less time-consuming to improve already existing validated scores focusing on HIV infection. QoL in intravenous drug users with HIV should be evaluated more often. 相似文献
48.
Life satisfaction in patients with chest pain subsequently diagnosed as coronary heart disease – connection through depressive symptoms? 总被引:3,自引:0,他引:3
Valkamo M. Koivumaa-Honkanen H.-T. Hintikka J. Niskanen L. Honkalampi K. Viinamäki H. 《Quality of life research》2003,12(8):1099-1105
The aim of this study was to investigate factors associated with life dissatisfaction in symptomatic patients (n = 144) with chest pain subsequently diagnosed as coronary heart disease (CHD) by coronary angiography. Life dissatisfaction was assessed with a four-item life satisfaction scale (LS), depression with the 21-item Beck Depression Inventory (BDI) and other psychiatric symptoms with the symptom check list (SCL). DSM-III-R Axis I and Axis II psychiatric diagnoses were performed by means of the Structured Clinical Interview. All assessments took place one day before angiography. Twenty-four per cent of CHD patients were dissatisfied with their lives. Life dissatisfaction was associated with being unmarried. Dissatisfied patients had Axis I mental disorders and Axis II personality disorders more frequently than others. Psychiatric and depressive symptoms according to the SCL and BDI, respectively, were also higher among dissatisfied patients. In multiple logistic regression analyses, mental disorders were related to life dissatisfaction when age, sex, employment status, New York Heart Association class, duration of chest pain symptoms and work load were controlled in the model. Married subjects had a lower probability of being dissatisfied with their lives than other subjects (Odds Ratio, OR: 0.23). When BDI scores were included in the model, the only factor independently associated with life dissatisfaction was the severity of depressive symptoms (OR: 1.81). To conclude, life dissatisfaction is not primarily determined by the severity of CHD but by the existence of depressive symptoms. 相似文献
49.
50.
Quality of life in adult survivors of lung,colon and prostate cancer 总被引:22,自引:0,他引:22
C. A. C. Schag P. A. Ganz D. S. Wing M. -S. Sim J. J. Lee 《Quality of life research》1994,3(2):127-141
In a cross-sectional study design, a disease free sample of 57 lung, 117 colon, and 104 prostate cancer survivors who represented short, intermediate and long-term survivors completed a detailed assessment of quality of life (QOL) and rehabilitation needs using the CAncer Rehabilitation Evaluation System (CARES). Demographic and medical data, social support, and a global QOL rating were also assessed. Lung cancer patients showed no differences in QOL with respect to their period of survival. QOL improved for survivors of colon cancer as they lived for longer periods, but declined with time for survivors of prostate cancer. The best predictor of QOL for all groups was KPS, although other variables such as type of hospital, gender, and work status were predictive for survivors of colon cancer. For survivors of prostate cancer comorbidity with other medical illnesses, time since diagnosis and comorbidity due to psychiatric difficulties were predictive of QOL. All groups had significant rehabilitation problems in the domains of physical, psychosocial, sexual, medical interaction, and marital relationships. Lung cancer survivors had more problems than the other cancer survivors. We conclude that patients who survive cancer do not return to a state of normal health. They demonstrate a variety of difficulties with which they must cope as they continue to survive. Greater efforts need to be made early in diagnosis and treatment to understand rehabilitation problems and target interventions in the hope of reducing later sequelae.Currently in private practice, Glendale, CaliforniaC. A. C. Schag was supported in part by Veterans Administration Health Research and Development Grant 83-002 and in part by Cares Consultants, 2210 Wilshire Blvd., Suite 359, Santa Monica, CA 90403.Address requests for Information about CARES to: CARES Consultants, 2210 Wilshire Blvd., Suite 359, Santa Monica, CA 90403, USA. Tel: (+1) 310-450-7410; Fax: (+1) 310-399-0016 相似文献