首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   183篇
  免费   8篇
  国内免费   9篇
  200篇
  2024年   1篇
  2022年   3篇
  2021年   2篇
  2020年   5篇
  2019年   4篇
  2018年   5篇
  2017年   7篇
  2016年   7篇
  2015年   3篇
  2014年   11篇
  2013年   26篇
  2012年   5篇
  2011年   13篇
  2010年   11篇
  2009年   22篇
  2008年   17篇
  2007年   13篇
  2006年   17篇
  2005年   4篇
  2004年   3篇
  2003年   1篇
  2002年   3篇
  2001年   5篇
  2000年   4篇
  1999年   3篇
  1994年   1篇
  1993年   1篇
  1992年   1篇
  1985年   1篇
  1980年   1篇
排序方式: 共有200条查询结果,搜索用时 0 毫秒
11.
探讨逆行性肾盂造影联合输尿管软镜在诊断小肾盏癌中的价值。回顾分析5例小肾盏癌临床资料,术后病理检查结果均提示尿路上皮癌I级(Ta-G1),术后定期行膀胱内灌注化疗药物,且均未出现肿瘤其他部位转移等并发症发生。对5例患者均进行随访,1年期间每3个月行尿常规及B超检查均正常,1年生存率达100%。患者出现血尿症状,虽然常规检查(尿常规、B超、IVU、CT或MRI等)诊断不明确者,都可行逆行性肾盂造影检查。一旦逆行性肾盂造影检查提示异常图像,均可提示肾盏癌,使误诊率及漏诊率降至最低程度,尽可能阻断早期肿瘤的发展。故逆行性肾孟造影联合输尿管软镜可提高早期小肾盏癌的术前诊断率。  相似文献   
12.
随着人们对于肿瘤性疾病的发生、发展、转移机制的进一步探索,循环肿瘤细胞(CTCs)逐渐进入人们视野,其应用价值日益体现,可用于肿瘤性疾病的早期诊断及治疗效果的监测,尤其是对于早期肿瘤的诊断具有独特优势。其富集技术及检测方法也在发生着日新月异的变化。近年来,微流控分析芯片技术运用于 CTCs 的富集及检测,具有高丰度、高富集度、高活性及不需要对样本进行预处理等优点使得人们聚焦于此技术,本文对微流控分析芯片在 CTCs 检测中的运用做简要综述。  相似文献   
13.
乳腺癌仍然是严重威胁女性健康的重大疾病。每年新发乳腺癌患者中约有6%为Ⅳ期乳腺癌,而这类患者5年生存率小于20%,局部处理(外科、放疗)可以根除局部病灶及微小转移灶,以延缓或者缓解症状,但是否可以带来生存获益尚无定论。本文对Ⅳ期乳腺癌原发灶的局部处理等方面的若干问题作一综述。  相似文献   
14.
Reading fluency is necessary for reading comprehension, but approximately 40% of U.S. fourth-grade students have inadequate reading fluency skills. Because small-group (SG) instruction is often used as a first line of intervention for struggling readers, SG instruction targeting deficiencies in text reading fluency ought to be part of every school's intervention toolbox. The authors summarize the existing research on instruction and interventions that specifically targets reading fluency and is implemented by an adult with 3 or more students at once. Key findings revealed that most studies used a single-case design, nearly all studies were rated positively in terms of methodological quality, and the majority of participants significantly improved as a result of receiving SG intervention. Furthermore, of the five studies examining comparable SG and 1-on-1 interventions, 79% of the students performed equally well from both interventions. Implications and several recommendations for future research are discussed.  相似文献   
15.
探讨早期目标血糖管理对严重脓毒症患者HMGB1变化的影响.严重脓毒症患者随机分为血糖控制A(4.4mmol/L~6.1mmol/L)、B(6.2mmol/L~8.3mmol/L)、C(8.4mmol/L~10.0mmol/L)三组.给予早期目标血糖管理,入ICU后0d、1d、3d、5d、7d采血测TNF-α、HMGB1浓度.三组TNF-α、HMGB1浓度及APACHEⅡ评分均呈下降趋势,A组HMGB1浓度及APACHEⅡ评分在第7d较B、C组明显降低(P<0.05).A组28d病死率较B、C组降低(P>0.05).严重脓毒症患者在早期目标血糖管理下,显著降低HMGB1浓度,降低病死率和改善预后,HMGB1可用来评价脓毒症的严重程度及预后.  相似文献   
16.
17.
现代肿瘤的诊疗水平已经有了长足的进步,先进的诊断技术使得很多肿瘤得以早期发现并积极治疗,很多晚期患者也不再面临无药可用的境地,但由于临床医生的认识存在偏差,存在过度诊断和过度治疗的问题,进而给患者带来不必要的负担和痛苦。美国临床肿瘤学会(ASC0)年会上发布了一篇名为“ASCO为改善肿瘤治疗质量及医疗花费的5项建议”的文章,特别提出要重视五项临床广泛应用、花费较大,但缺乏高级临床证据的肿瘤治疗或干预措施,也提示我们需要充分评估,综合思考,为合适的患者提供正确的诊治方案,才能给患者带来更大的获益。  相似文献   
18.
分子靶向治疗是这几年来消化道肿瘤治疗领域的热门话题.这类新一代的分子靶向生物治疗模式,将在临床治疗肿瘤实践中具有广阔的应用前景.从事肿瘤研究的临床医务人员需要综合归纳这些信息,融汇入自己的认知将之合理应用于患者.我们将真正进入传统的细胞毒性药物攻击与非细胞毒性靶向性药物相结合使用的时代,真正实现延长患者的生命,改善其生活质量的目标.  相似文献   
19.
This study examines whether individuals in a network esteem peers who think in integratively complex ways about religious issues in the context of a small‐group educational course comprised of young British Muslims. Integrative complexity (IC) measures the degree to which an individual's information processing is characterized by (a) rigid, black‐and‐white thinking or (b) ability to recognize the validity of, and integrate, multiple perspectives. A novel measurement procedure was developed for this research called the Social Field Generator. Results from seven groups (n = 55) showed that (a) participants with levels of IC were described by their peers with more positive sentiment than their low‐IC counterparts; (b) the higher the IC scores of participants, the closer peers felt toward them; and (c) the highest IC individuals were consistently selected as sources of advice, whereas the lowest IC individuals were not viewed as sources of advice. This research shows that within an educational environment aimed at promoting complex thinking, group processes and grassroots religious leadership can encourage higher levels of IC as a group norm.  相似文献   
20.
Medical advances have resulted in increased survival rates for children with brain tumors. Consequently, issues related to survivorship have become more critical. The use of multimodal treatment, in particular cranial radiation therapy, has been associated with subsequent cognitive decline. Specifically, deficits in executive functions have been reported in survivors of various types of pediatric brain tumor. Survivors are left with difficulties, particularly in self-monitoring, initiation, inhibition, and planning, to name a few. Another domain in which survivors of pediatric brain tumor have been reported to show difficulty is that of social skills. Parents, teachers, and survivors themselves have reported decreased social functioning following treatment. Deficits in executive functions and social skills are likely interrelated in this population, as executive skills are needed to navigate various aspects of social interaction; however, this has yet to be studied empirically. Twenty-four survivors of pediatric brain tumor were assessed using a computerized task of executive functions, as well as paper-and-pencil measures of social skills and real-world executive skills. Social functioning was related to a specific aspect of executive functions, that is, the survivors' variability in response time, such that inconsistent responding was associated with better parent-reported and survivor-reported social skills, independent of intellectual abilities. Additionally, parent-reported real-world global executive abilities predicted parent-reported social skills. The implications of these findings for social skills interventions and future research are discussed.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号