全文获取类型
收费全文 | 1183篇 |
免费 | 88篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 46篇 |
儿科学 | 84篇 |
妇产科学 | 12篇 |
基础医学 | 100篇 |
口腔科学 | 27篇 |
临床医学 | 80篇 |
内科学 | 192篇 |
皮肤病学 | 27篇 |
神经病学 | 50篇 |
特种医学 | 144篇 |
外科学 | 132篇 |
综合类 | 137篇 |
预防医学 | 93篇 |
眼科学 | 4篇 |
药学 | 55篇 |
中国医学 | 39篇 |
肿瘤学 | 67篇 |
出版年
2023年 | 8篇 |
2022年 | 15篇 |
2021年 | 24篇 |
2020年 | 20篇 |
2019年 | 18篇 |
2018年 | 20篇 |
2017年 | 15篇 |
2016年 | 20篇 |
2015年 | 29篇 |
2014年 | 41篇 |
2013年 | 43篇 |
2012年 | 51篇 |
2011年 | 50篇 |
2010年 | 72篇 |
2009年 | 62篇 |
2008年 | 34篇 |
2007年 | 39篇 |
2006年 | 52篇 |
2005年 | 35篇 |
2004年 | 20篇 |
2003年 | 29篇 |
2002年 | 21篇 |
2001年 | 20篇 |
2000年 | 15篇 |
1999年 | 24篇 |
1998年 | 50篇 |
1997年 | 61篇 |
1996年 | 53篇 |
1995年 | 38篇 |
1994年 | 33篇 |
1993年 | 31篇 |
1992年 | 15篇 |
1991年 | 10篇 |
1990年 | 14篇 |
1989年 | 30篇 |
1988年 | 24篇 |
1987年 | 21篇 |
1986年 | 18篇 |
1985年 | 15篇 |
1984年 | 12篇 |
1983年 | 5篇 |
1982年 | 9篇 |
1981年 | 10篇 |
1980年 | 14篇 |
1979年 | 7篇 |
1977年 | 6篇 |
1976年 | 7篇 |
1966年 | 2篇 |
1958年 | 4篇 |
1957年 | 2篇 |
排序方式: 共有1289条查询结果,搜索用时 13 毫秒
81.
Posttraumatic stress disorder in female veterans: association with self-reported health problems and functional impairment 总被引:18,自引:0,他引:18
Dobie DJ Kivlahan DR Maynard C Bush KR Davis TM Bradley KA 《Archives of internal medicine》2004,164(4):394-400
BACKGROUND: The purpose of this report is to identify self-reported health problems and functional impairment associated with screening positive for posttraumatic stress disorder (PTSD) in women seen for care at a Department of Veterans Affairs (VA) medical center. METHODS: A survey was mailed to all women (N = 1935) who received care at the VA Puget Sound Health Care System between October 1996 and January 1998. The survey inquired about health history and habits. It included the PTSD Checklist-Civilian Version (PCL-C) and validated screening measures for other psychiatric disorders. The veteran's version of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36-V) was included to assess health-related quality of life. RESULTS: Of the 1259 eligible women who completed the survey, 266 women (21%) screened positive for current PTSD (PCL-C score >or= 50). In age-adjusted bivariate analyses, women who screened positive for PTSD reported more psychiatric problems, substance abuse, and lifetime exposure to domestic violence. They were significantly more likely to endorse physical health problems including obesity, smoking, irritable bowel syndrome, fibromyalgia, chronic pelvic pain, polycystic ovary disease, asthma, cervical cancer, and stroke. In fully adjusted multivariate models, a PCL-C score of 50 or greater was independently associated with scoring in the lowest quartile on SF-36-V subscales and composite scales. CONCLUSIONS: Symptoms of PTSD are common in women treated at VA facilities. In addition, PTSD is associated with self-reported mental and physical health problems and poor health-related quality of life in these patients. These findings have implications for the design of VA primary care services for the growing population of female veterans. 相似文献
82.
Depression and tinnitus 总被引:5,自引:0,他引:5
Dobie RA 《Otolaryngologic clinics of North America》2003,36(2):383-388
Most patients with tinnitus are neither depressed nor seriously bothered by their tinnitus. Patients who complain bitterly of tinnitus, however, are often found to have a MDD. Treatment with tricyclic antidepressant drugs helps these patients, especially those who complain of insomnia. Other types of drugs and psychotherapy may also be helpful. 相似文献
83.
The clinicopathological associations of 33 singleton infants who died with intraventricular haemorrhage (IVH) without hyaline membrane disease (HMD) ('IVH only') were compared with those of 39 infants who died with IVH+HMD over the same gestation range in order to determine what factors other than those related to HMD may contribute to the pathogenesis of IVH. The incidence of 'IVH only' was inversely related to gestational age in the Hammersmith birth population, whereas the incidence of IVH+HMD rose to a peak at 28-29 weeks' gestation. Infants with 'IVH only' lived longer on average than those with IVH+HMD despite a lower birthweight and shorter gestation. Infants who died in the first 12 hours from 'IVH only' had suffered severe birth asphyxia but in those who died later the main symptom was recurrent apnoea. Fewer infants with asphyxia but in those who died later the main symptom was.recurrent apnoea. Fewer infants with 'IVH only' were given alkali therapy or were connected to the ventilator as compared to those with IVH+HMD, but there were no differences in alkali therapy in those who lived for 12 hours or more. In the 'IVH only' group there was a high incidence of haemorrhage from other sites and of bacterial infections. It is suggested that, in the absence of HMD, extreme immaturity is the main factor determining the occurrence of IVH. Birth asphyxia, apnoeic attacks, haemorrhage, and infections may play subsidiary roles, possibly through development of metabolic acidosis. 相似文献
84.
目的 探讨自体组织替代治疗超长段尿道狭窄对勃起功能的影响.方法 回顾性分析2007年1月至2009年1月采用不同自体组织补片(阴囊纵隔、包皮内板、口腔黏膜)Onlay术式替代治疗超长段男性尿道狭窄患者的临床资料,并随访患者ⅡEF-5评分、QOL评分及最大尿流率,并与术前相应情况进行分析.结果 根据研究标准收集23份有效数据.患者术前及术后3、6、12个月QOL评分分别为5.22±0.75、1.22±1.40、1.82±1.17、2.07±0.46,最大尿流率分别为(3.93±3.62)、(22.46±4.65)、(23.81±6.22)、(21.52±7.44)ml/s,术后不同时期均较术前明显改善(P<0.01).术前及术后3、6、12个月ⅡEF-5评分分别为14.47±9.55、14.70±5.32、14.26±3.29和14.58±3.62,组间比较差异无统计学意义(P>0.05).9例狭窄部位累及至后尿道者术后3、6、12个月ⅡEF-5评分分别为11.67±2.59、12.35±1.83、13.19±1.67,14例单纯前尿道狭窄者分别为17.79±6.42、16.57±4.78、16.01±3.85,2组间比较差异均有统计学意义(P<0.05).狭窄累及后尿道患者多元线性回归分析中,年龄、受伤时间及尿道狭窄段长度与替代术后ⅡEF-5评分呈多元线性相关.结论 自体组织替代治疗男性超长段尿道狭窄对勃起功能影响不明显;狭窄段累及后尿道时可能对患者勃起功能产生一定影响.患者年龄和受伤时间对勃起功能有协同影响作用.Abstract: Objective To investigate the effect of substitutive reconstruction of long urethral stricture on male erectile function. Methods From January 2007 to January 2009, 23 patients with anterior or posterior long urethral stricture were accepted for a variety of onlay substitutive procedures, including lingual mucosa, perputial skin, and mid-scrotal skin. During the follow-up, data from the International Index of Erectile Function-5 (ⅡEF-5) questionnaire and the Quality of Life (QOL) questionnaire as well as maximal flow rate were recorded. All data were compared with those obtained before surgery. Results Significant improvement in QOL (1.22 ± 1.40, 1.82 ± 1. 17,2.07± 0.46) and maximal flow rate (22.46± 4.65, 23.81 ± 6.22, 21.52 ±7.44 ) could be observed 3, 6 and 12 months after surgery compared with those before surgery (5. 22 ± 0. 75, 3. 93 ± 3. 62)(P<0.01). No significant differences in the responses to the ⅡEF-5 questionnaire were observed among all patients during the follow-up (P>0. 05). At the 3, 6 and 12 months after procedure,scores of ⅡEF-5 in patients with anterior urethral stricture ( 17.79 ± 6.42, 16. 57 ± 4. 78, 16.01 ±3.85) were significantly higher than those with posterior urethral stricture (11.67 ± 2.59, 12.35 ±1.83,13. 19±1.67, P<0.05). In patients with posterior urethral stricture, the multiple linear regression showed that age, time interval of injury and length of stricture were related to the ⅡEF-5score (P<0.05). Conclusions Substitutive reconstruction for treating the long urethral stricture has little effect on male erectile function. But the location of stricture, especially extended to posterior urethra, may have impact on the erectile function. 相似文献
85.
86.
87.
目的:促进老年人新型冠状病毒肺炎中药防治的安全性及合理性。方法:根据全国各省制定的新型冠状病毒肺炎中医药预防方案,结合老年人的生理特质、病理情况、基础疾病及用药特点进行分析。结果:提出老年人新型冠状病毒肺炎中药防治的合理用药策略。结论:老年人作为预防新冠病毒感染的重点人群,应加强合理用药干预,确保中药用药安全有效。 相似文献
88.
目的对用于评价西安城区居民膳食营养状况的西安食物频率问卷(FFQ)的重现性和准确性进行食物组的研究。方法在西安城区随机抽取出125名50~80岁当地居民,共完成6轮的食物摄入情况的调查,其中4轮24小时膳食回顾调查(24HDRs)的结果作为参考,通过第一轮FFQ结果与第二轮FFQ以及4轮24HDRs结果之间的比较分别进行FFQ的重现性和准确性研究。结果各个食物组在两轮FFQ间的Spearman相关系数在0.38(糕点类)~0.74(茶类)。第二轮FFQ与4轮24HDRs均值间的相关系数在0.12~0.74之间,经过个体内方差校正后,相关系数均有所提高。结论西安食物频率问卷可以相对准确、可靠地评价西安城区50岁以上居民的膳食营养状况。 相似文献
89.
目的 解陕西省死因监测病例来源分布,为提高死因监测数据的完整性和准确性提供依据。方法 从《中国疾病预防控制信息系统 - 死因报告信息系统》中导出的陕西省13个国家级死因监测点2015 - 2018年的网报数据进行分析。结果 2015 - 2018年陕西省13个国家级监测点共报告死亡病例129 740例,其中男性75 773例,女性53 688例。分别报告32 489例、33 212例、31 533例和32 227例死亡病例,各年性别比例均衡,趋势无统计学意义(趋势χ2 = 1.84,P = 0.17)。死亡病例主要来源于乡镇卫生院,占58.80%~61.51%,其次为社区卫生服务中心和县及县以上综合医院,二者分别报告占17.60%~19.81%和17.19%~18.69%(趋势χ2 = 27.79,P<0.01),在家中死亡的比例占绝大多数,73.06%~76.52%,死于医疗卫生机构的占17.67%~19.93%(趋势χ2 = 38.81,P<0.01)。死亡病例生前最高诊断单位以二级医院(占46.36%~49.93%)和三级医院(占41.75%~45.63%)为主(趋势χ2 = 48.80,P<0.01),最高诊断依据以临床+理化为主(占60.74%~63.57%)。结论 陕西省死因监测中发现虽然大多数病人在二级或三级医院就诊,且这一比例逐年提高,但绝大多数死亡病例死于家中,主要由乡镇卫生院专干完成死亡病例卡网报。因此,在今后工作中应加强对乡镇卫生院及社区卫生服务中心的培训,定期开展数据查漏补报和质量核查工作。 相似文献
90.