全文获取类型
收费全文 | 789篇 |
免费 | 55篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 41篇 |
妇产科学 | 7篇 |
基础医学 | 67篇 |
口腔科学 | 76篇 |
临床医学 | 79篇 |
内科学 | 110篇 |
皮肤病学 | 8篇 |
神经病学 | 11篇 |
特种医学 | 189篇 |
外科学 | 44篇 |
综合类 | 74篇 |
预防医学 | 47篇 |
眼科学 | 4篇 |
药学 | 41篇 |
中国医学 | 24篇 |
肿瘤学 | 21篇 |
出版年
2024年 | 1篇 |
2022年 | 6篇 |
2021年 | 2篇 |
2020年 | 6篇 |
2019年 | 3篇 |
2018年 | 15篇 |
2017年 | 13篇 |
2016年 | 11篇 |
2015年 | 11篇 |
2014年 | 26篇 |
2013年 | 50篇 |
2012年 | 42篇 |
2011年 | 37篇 |
2010年 | 43篇 |
2009年 | 35篇 |
2008年 | 35篇 |
2007年 | 49篇 |
2006年 | 15篇 |
2005年 | 11篇 |
2004年 | 9篇 |
2003年 | 4篇 |
2002年 | 5篇 |
2001年 | 9篇 |
2000年 | 5篇 |
1999年 | 14篇 |
1998年 | 56篇 |
1997年 | 47篇 |
1996年 | 36篇 |
1995年 | 23篇 |
1994年 | 26篇 |
1993年 | 23篇 |
1992年 | 5篇 |
1991年 | 6篇 |
1990年 | 5篇 |
1989年 | 18篇 |
1988年 | 22篇 |
1987年 | 19篇 |
1986年 | 13篇 |
1985年 | 21篇 |
1984年 | 7篇 |
1983年 | 10篇 |
1982年 | 9篇 |
1981年 | 8篇 |
1980年 | 10篇 |
1979年 | 1篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1976年 | 9篇 |
1975年 | 5篇 |
1954年 | 1篇 |
排序方式: 共有849条查询结果,搜索用时 15 毫秒
51.
GA McCarthy B Kampmann V Novelli RF Miller DE Mercey D Gibb 《Archives of disease in childhood》1996,74(5):455-457
AIDS related Kaposi's sarcoma is commonly seen in homosexual men, only occasionally in men and women with heterosexually acquired HIV, and extremely rarely in children. The case of an HIV infected mother and her vertically infected child who both developed visceral Kaposi's sarcoma is reported. It is proposed that the putative Kaposi's sarcoma agent may also be transmitted vertically. 相似文献
52.
Extracorporeal membrane oxygenation (ECMO) is a life support technique based on modifications of heart-lung bypass technology. It is used to support severe but potentially reversible pulmonary or cardiopulmonary failure. There is increasing use of the technique for neonates and a return of interest in its use for adults. The number of non-neonatal paediatric patients receiving pulmonary support with ECMO worldwide is, however, small, and survival rates average less than 50%. Initial experience in 15 patients aged 3 months to 5 years with a high survival and low morbidity is reported. 相似文献
53.
MJ Evans PA McKeever GA Pearson D Field RK Firmin 《Archives of disease in childhood》1994,71(2):F88-F92
The pathology was reviewed of the early deaths identified from the first 50 neonates treated with extracorporeal membrane oxygenation (ECMO) during its introduction to the UK. Fifteen neonates died during or shortly after ECMO between August 1989 and June 1992. Data on 12 are presented (three did not have a postmortem examination). The clinical diagnoses at referral for ECMO were as follows: persistent pulmonary hypertension of the newborn (six infants), primary congenital pneumonia (one infant), community acquired pneumonia (two infants), birth asphyxia (one infant), respiratory distress syndrome (one infant), and meconium aspiration syndrome (one infant). In our group, at necropsy, five had significant haemorrhage (three intracranial, one pulmonary, one pericardial and intraventricular). Three of five infants with evidence of haemorrhage also had signs of sepsis. Six infants had evidence at necropsy of systemic sepsis, five showed evidence of severe anoxic brain injury, and four infants had cerebellar haemorrhages. Three infants had evidence of myocardial ischaemia. It is difficult to discriminate between the relative influence of the primary diagnosis, the mode of treatment, and the severity of presentation in the genesis of this pathology. It is likely that the extent and severity of some of the findings represent a pathological progression that would have been interrupted by the death of the patient, had ECMO not been instituted. 相似文献
54.
55.
56.
Parathyroid adenomas evaluated by Tl-201/Tc-99m pertechnetate subtraction scintigraphy and high-resolution ultrasonography 总被引:2,自引:0,他引:2
Winzelberg GG; Hydovitz JD; O'Hara KR; Anderson KM; Turbiner E; Danowski TS; Lippe RD; Melada GA; Harrison AM 《Radiology》1985,155(1):231-235
Thallium-201/technetium-99m pertechnetate subtraction scintigraphy of the parathyroid glands was performed in a prospective study of 33 patients who had undergone bilateral neck exploration for elevated serum calcium and serum parathyroid hormone levels. In 31 cases, the Tl-201/Tc-99m subtraction technique yielded an overall sensitivity of 81%, specificity of 99%, and accuracy of 94% for identifying solitary parathyroid adenomas. Tl-201/Tc-99m subtraction scintigraphy correctly identified 73% of parathyroid adenomas weighing less than 499 mg, 79% of those weighing 500-1,499 mg, and 100% of adenomas weighing more than 1,500 mg. In a subgroup of 24 patients with solitary parathyroid adenomas who underwent both scintigraphy and high-resolution sonography, the sensitivity, specificity, and accuracy of both procedures were similar. 相似文献
57.
Computed tomographic appearance of the bulging annulus 总被引:6,自引:0,他引:6
58.
Thoracic wall involvement by Hodgkin disease and non-Hodgkin lymphoma: CT evaluation 总被引:6,自引:0,他引:6
Thoracic computed tomographic (CT) scans of 250 patients with newly diagnosed or recurrent lymphoma revealed thoracic wall involvement in 24 patients (11 with Hodgkin disease, 13 with non-Hodgkin lymphoma). Thoracic wall involvement occurred without contiguous mediastinal or parenchymal involvement in 17 patients. Of these, 13 patients had masses beneath the pectoralis muscles or within the breast, and four had masses arising from the ribs. Five additional patients had mediastinal masses with thymic involvement and parasternal extension through the thoracic wall. Pulmonary parenchymal lymphoma with thoracic wall invasion was noted in the remaining two patients. In five of nine patients receiving radiation therapy, treatment plans were modified by CT demonstration of thoracic wall lymphoma. 相似文献
59.
60.
刑事警察心理健康调查分析 总被引:2,自引:0,他引:2
①目的了解刑事警察的心理健康状况,为心理干预提供依据。②方法对济宁市刑警队员进行症状自评量表(Symptom Checklist 90.SCL-90)、焦虑自评量表(Self—rating Anxiety state,SAS)、抑郁自评量表(Self—rating Depression scale,SDS)评定。③结果济宁市刑警队员的SCL-90、SAS、SDS量表评分与全国常模相比存在显著性差异。④结论。刑事警察职业是一种特殊职业,该职业对队员的心理健康有显著的影响,这种影响随着从事刑警工作时间的不同而改变。 相似文献