全文获取类型
收费全文 | 26909篇 |
免费 | 5924篇 |
国内免费 | 137篇 |
专业分类
耳鼻咽喉 | 676篇 |
儿科学 | 924篇 |
妇产科学 | 828篇 |
基础医学 | 939篇 |
口腔科学 | 2730篇 |
临床医学 | 4541篇 |
内科学 | 6258篇 |
皮肤病学 | 545篇 |
神经病学 | 2116篇 |
特种医学 | 1200篇 |
外科学 | 4940篇 |
综合类 | 173篇 |
现状与发展 | 12篇 |
一般理论 | 3篇 |
预防医学 | 2935篇 |
眼科学 | 453篇 |
药学 | 682篇 |
中国医学 | 13篇 |
肿瘤学 | 3002篇 |
出版年
2024年 | 166篇 |
2023年 | 1133篇 |
2022年 | 423篇 |
2021年 | 803篇 |
2020年 | 1299篇 |
2019年 | 652篇 |
2018年 | 1511篇 |
2017年 | 1399篇 |
2016年 | 1632篇 |
2015年 | 1692篇 |
2014年 | 2179篇 |
2013年 | 2581篇 |
2012年 | 1122篇 |
2011年 | 1110篇 |
2010年 | 1536篇 |
2009年 | 2104篇 |
2008年 | 1022篇 |
2007年 | 714篇 |
2006年 | 876篇 |
2005年 | 683篇 |
2004年 | 544篇 |
2003年 | 474篇 |
2002年 | 422篇 |
2001年 | 500篇 |
2000年 | 411篇 |
1999年 | 523篇 |
1998年 | 531篇 |
1997年 | 524篇 |
1996年 | 570篇 |
1995年 | 416篇 |
1994年 | 324篇 |
1993年 | 288篇 |
1992年 | 271篇 |
1991年 | 254篇 |
1990年 | 209篇 |
1989年 | 228篇 |
1988年 | 193篇 |
1987年 | 193篇 |
1986年 | 168篇 |
1985年 | 179篇 |
1984年 | 120篇 |
1983年 | 129篇 |
1982年 | 101篇 |
1981年 | 86篇 |
1980年 | 59篇 |
1979年 | 57篇 |
1978年 | 50篇 |
1977年 | 65篇 |
1974年 | 58篇 |
1973年 | 54篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
72.
Shirley L. Jones RNC MS 《Journal of obstetric, gynecologic, and neonatal nursing : JOGNN / NAACOG》1996,25(9):777-783
Advances in human genetics are rapidly changing the scope of information and care that can be provided to health care consumers. By the year 2005 it is expected that the entire human genome will be mapped and all 70,000–100,000 genes will be identified. Currently, there are more than 5,000 known single-gene disorders. With the movement of specialized health services into the primary care setting, nurses increasingly will need to be knowledgeable about genetic disorders, screening/diagnostic tests, and implications for health care. In addition, the management of genetic information raises issues of informed consent, privacy and confidentiality, truth telling and disclosure, and nondiscrimination. 相似文献
73.
Value of acute-phase angiography in the detection of vascular injuries caused by gunshot wounds to the head: analysis of 12 cases. 总被引:2,自引:0,他引:2
J R Jinkins M R Dadsetan R N Sener S Desai R G Williams 《AJR. American journal of roentgenology》1992,159(2):365-368
A study of the angiographic findings in consecutive civilian patients with cranial gunshot wounds examined in the acute stage has not been done. Most prior clinical studies have evaluated the findings in survivors in the subacute or chronic stages and have often been of war-time casualties. We determined the clinicoradiologic features of six cases of posttraumatic intracranial aneurysm, vascular occlusion, or arteriovenous fistula caused by penetrating missiles among 12 civilian patients who were examined in the acute posttraumatic stage (within 48 hr of injury) during a 1-year period. Three internal carotid/vertebral artery aneurysms, one external carotid artery aneurysm, one combined aneurysm/arteriovenous fistula of the vertebrobasilar circulation, and one cerebral venous occlusion were identified. The 50% overall prevalence of major vascular lesions in this series of civilian patients with penetrating missile injuries examined in the acute stage suggests these injuries are more common than previously suspected. It may indicate that selective cerebral angiography should be considered in the evaluation of the cranial vascular system of such persons. 相似文献
74.
75.
Andrew R. Hoellein MD Christopher A. Feddock MD Charles H. Griffith III MD MSPH John F. Wilson PhD Donald R. Barnett MD MSPH Pat F. Bass III MD MS T. Shawn Caudill MD MSPH 《Journal of general internal medicine》2004,19(5P2):562-565
Due to recent public debate and newly imposed resident work hour restrictions, we decided to investigate the relationship of resident call status to their ambulatory patients' satisfaction. Resident continuity clinic patients were asked to rate their level of satisfaction on a 10-point Likert-type scale. Using multiple regression approaches, these data were then assessed as a function of resident call status. We found that in 646 patient encounters, patient satisfaction scores were significantly less when the resident was postcall, 8.99 ± 1.8, than when not postcall, 9.31 ± 1.3. We herein discuss etiologies and implications of these findings for both patient care and medical education. 相似文献
76.
77.
78.
Kuo-Sheng Hung MD Phd Chung-Ling Liang MD Cheng-Haung Wang MD Hsueh-Wen Chang PhD Naeun Park MS Suh-Hang Hank Juo MD PhD 《Journal of clinical neuroscience》2004,11(8):849-853
Frontal intracerebral haemorrhage (ICH) is a common result of cranial trauma. Outcome differences between bilateral and unilateral frontal ICH are not well studied but would be valuable to predict prognosis in clinical practice. Two aims are proposed in this study: first to compare the risk of developing delayed ICH after bilateral or unilateral frontal ICH, and second to determine the variables helpful to predict outcome according to the Glasgow Outcome Scale (GOS). Between January 1993 and December 1997, 694 consecutive patients with traumatic ICH were admitted to the Chang Gung Medical Center within 24 h of the trauma. Patients with ICH in sites other than the frontal lobes were excluded. A total of 161 cases (mean age 46.3+/-20.3 years), including 57 bilateral (mean age 52.5+/-18.7 years) and 104 unilateral (mean age 42.9+/-20.5 years) traumatic frontal ICH were studied. Twenty-eight of 57 patients (49%) with bifrontal ICH versus 17 of 104 patients (16%) with unilateral frontal ICH had a further, delayed ICH. In 42 of 45 patients (93%) with delayed ICH, this occurred within 5 days of the initial trauma. Multivariate logistic regression was used to select significant predictors of outcome. We found that delayed ICH (p<0.001), age (p=0.004) and mechanism of injury (p=0.001) explained the worse outcome in patients with bifrontal ICH. The best-fitting logistic regression model included three variables: delayed ICH (p=0.011), initial GCS (p=0.023), and a sum score of clinical and radiological variables (p=0.003). Bifrontal ICH tended to occur in older patients after a fall and was associated with a higher risk of developing delayed ICH or brain stem compression compared to unilateral ICH damage. Using these three variables - delayed ICH, initial GCS, and the sum score - in a logistical regression model is useful to predict outcome in patients with traumatic frontal ICH and may aid patient management. 相似文献
79.
C S Pramesh Bhulaxmi P Madur Sudip Raina Sangeeta B Desai Rajesh C Mistry 《Annals of thoracic and cardiovascular surgery》2004,10(3):187-190
Angiosarcoma is a rare, highly malignant tumor arising from endothelial cells of small blood vessels. They usually occur in the skin, deep soft tissues, breast and liver. Pleural angiosarcomas are extremely rare and are restricted to case reports in medical literature. It is very difficult to distinguish them from malignant mesotheliomas on clinical, radiological and even histopathological features. Immunohistochemistry is valuable in making the diagnosis, showing negative reactivity for mesothelial markers and positivity for vascular markers. Prognosis is generally dismal except in occasional cases where the disease is localized and amenable for surgical resection. We report a 55-year-old man who presented to us with chest pain, cough and hemoptysis and was diagnosed to have a pleural angiosarcoma. 相似文献
80.