全文获取类型
收费全文 | 2906篇 |
免费 | 321篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 59篇 |
儿科学 | 76篇 |
妇产科学 | 53篇 |
基础医学 | 463篇 |
口腔科学 | 48篇 |
临床医学 | 388篇 |
内科学 | 576篇 |
皮肤病学 | 45篇 |
神经病学 | 170篇 |
特种医学 | 174篇 |
外科学 | 336篇 |
综合类 | 128篇 |
一般理论 | 4篇 |
预防医学 | 305篇 |
眼科学 | 62篇 |
药学 | 239篇 |
中国医学 | 1篇 |
肿瘤学 | 117篇 |
出版年
2022年 | 18篇 |
2021年 | 23篇 |
2020年 | 21篇 |
2019年 | 35篇 |
2018年 | 43篇 |
2017年 | 42篇 |
2016年 | 47篇 |
2015年 | 52篇 |
2014年 | 63篇 |
2013年 | 93篇 |
2012年 | 139篇 |
2011年 | 135篇 |
2010年 | 78篇 |
2009年 | 81篇 |
2008年 | 125篇 |
2007年 | 108篇 |
2006年 | 119篇 |
2005年 | 131篇 |
2004年 | 106篇 |
2003年 | 94篇 |
2002年 | 112篇 |
2001年 | 69篇 |
2000年 | 92篇 |
1999年 | 84篇 |
1998年 | 57篇 |
1997年 | 64篇 |
1996年 | 51篇 |
1995年 | 51篇 |
1994年 | 38篇 |
1993年 | 47篇 |
1992年 | 53篇 |
1991年 | 57篇 |
1990年 | 51篇 |
1989年 | 72篇 |
1988年 | 70篇 |
1987年 | 71篇 |
1986年 | 73篇 |
1985年 | 49篇 |
1984年 | 53篇 |
1983年 | 53篇 |
1982年 | 30篇 |
1981年 | 31篇 |
1980年 | 24篇 |
1979年 | 27篇 |
1978年 | 27篇 |
1972年 | 27篇 |
1971年 | 19篇 |
1970年 | 24篇 |
1969年 | 22篇 |
1967年 | 20篇 |
排序方式: 共有3244条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
杨兴旺 《眼外伤职业眼病杂志》1994,16(3):202-204
采用综合治疗,抗炎,散瞳,局部治疗与全身应用免疫抑制疗法,治疗319例352眼外伤获得了满意的疗效,眼球挫伤104例,眼球穿孔伤93例,化学烧伤71例,眼炸伤46例。眼热烧伤5例,治疗包括及时清创胶粘或缝合,清除前房出血合理用皮质类固醇和免疫抑制剂等。眼球挫伤治愈率97.12%,穿透伤93.18%,热烧伤66.67%。319例眼外伤治愈率94.67%好转5.33%,并对各种治疗方法进行了讨论。 相似文献
6.
During a 12-month period 115 patients with abnormal mammograms had stereotaxic needle localization and biopsy of nonpalpable breast lesions. The procedure was performed on a Fischer Mammotest II machine (Fischer Imaging; Denver, CO) and the biopsies were taken with a #18 gauge Bard biopsy needle using a Bard biopty gun (distributed by Bard Urological; Covington, GA; manufactured by Radiplast; Uppsala, Sweden). Mammographic lesions were suspicious matrix densities (85), clustered microcalcifications (22), or a combination of both (8). The pathologist recommended open biopsy in 16 per cent (18/115) of the patients. Pathology on the 18 open biopsies revealed that 11 (9 matrix densities and 2 calcifications) were carcinomas and true positives, whereas the other 7 (all matrix densities) were benign mastopathies and false positives. Further analysis of the pathologic data showed that there were three possible diagnoses from the needle biopsies on the patients that later went to open biopsy: cancer (6), very suspicious lesion (9), and slightly suspicious lesion without atypical hyperplasia (3). All 6 cancers were confirmed by open biopsy; about half (5/9) of the very suspicious lesions were cancer and none (0/3) of the slightly suspicious lesions were cancer. More cases, followed by open biopsy, are needed to refine the selection procedure for open biopsy and careful follow-up of the patients who did not have open biopsy will also be needed to determine the false negative rate. Excellent patient acceptance was found and the test was easy to perform in the office without serious complications. Furthermore, the test was cost effective because it avoided open biopsy in 97 patients. 相似文献
7.
8.
9.
Factors affecting breastfeeding among women of Mexican origin or descent in Los Angeles. 总被引:2,自引:0,他引:2 下载免费PDF全文
Data on breastfeeding intentions and behavior were collected in prenatal and postpartum interviews as part of a study on first birth among 518 women of Mexican origin or descent in two Los Angeles hospitals. The prenatal intentions of 82 per cent of the women to breastfeed were maintained postpartum in one hospital but dropped sharply in the other. A greater number of hours a day with the baby in the hospital and earlier initiation of breastfeeding were associated with the hospital where prenatal breastfeeding intentions were more likely to be carried out. The intention to work postpartum was associated both with the decision not to breastfeed at all and with shorter intended duration of breastfeeding. 相似文献
10.
Retrorenal colon: implications for percutaneous diskectomy 总被引:1,自引:0,他引:1
It has been recommended that computed tomography (CT) with the patient prone be performed in every patient undergoing percutaneous diskectomy; this would enable detection of a retrorenal location of the colon, which could interfere with the percutaneous procedure. In this evaluation of 346 prone CT studies, only one patient (0.29%) was found to have retrorenal or retropsoas bowel that would have been perforated at diskectomy. Because of this extremely low prevalence, the performance of prone CT in every patient undergoing percutaneous lumbar diskectomy is not believed to be necessary. 相似文献