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排序方式: 共有907条查询结果,搜索用时 234 毫秒
901.
利用频数统计、关联规则算法,对中国中医药期刊文献数据库中1984-2007年病毒性心肌炎文献涉及的主题词和副主题词进行分析,抽取隐含规律,为病毒性心肌炎的临床诊疗及科研提供思路。 相似文献
902.
903.
Solveig M. Lundgren RN PhD Maud Lundén RN PhD 《Scandinavian journal of caring sciences》2023,37(4):1091-1099
Introduction
Concepts are cornerstones in science, and their determination is a prerequisite for understanding their substance and meaning. Radiography as a concept is not straightforward nor simple to understand, and there are different interpretations depending on the scientific perspective. To develop truthful knowledge of radiography from the perspective of the discipline, a determination of the subject and substance of radiography is required and thereby is a precursor for theory development. The aim of this study was to investigate the etymological and semantic meaning of radiography from the radiography science perspective.Methods
An etymological and semantic analysis has been applied according to Koort and Eriksson's theoretical model. Dictionaries published between 2004 and 2021 were used.Results
The findings show that etymologically, radiography is formed by compounding the words ‘radio’ and ‘graphy’, originating historically from Latin and Greek. The semantic analysis revealed that the substance of radiography consisted of four characteristics that are the basic substance of radiography. The characteristics were X-ray and radiation, human beings—opaque objects, process including an act and art and images.Conclusion
This study clarifies the substance and meaning of radiography as a subject from the perspective of radiography science. The subject and substance consisted of the four basic characteristics that all are vital and required to understand the concept of radiography. The characteristics revealed that radiography science is based on scientific knowledge and carrier of properties of meaning that provide a fundamental understanding of radiography science.Implications for Practice
Investigating the subject, substance and meaning of radiography as a concept can become the base for further theoretical, contextual and practical understanding and support in the development of theory in radiography science. 相似文献904.
Jodi Christine McDaniel Jamie Ann Rausch Dina Rose McGowan 《International wound journal》2023,20(4):1042-1052
Venous leg ulcers (VLUs) are open skin lesions of the lower legs arising in areas affected by venous hypertension that are associated with substantial morbidity. Clinical trials testing innovative approaches to improve healing outcomes are critically needed because standard therapies are often ineffective. However, patients with VLUs frequently have multiple physical, emotional and socioeconomic challenges that can negatively impact their decision to enrol in a clinical trial. To benefit clinical researchers and ultimately the community of patients with chronic wounds, this paper describes the monitoring and modification of recruitment strategies in an ongoing clinical trial testing effects of omega-3 fatty acid oral supplementation on VLU healing in ageing adults (n = 208). Multiple modifications over time in this study have targeted participation barriers identified through data monitoring and include expanding inclusion criteria, adding recruitment sites, enhancing communication methods, and meeting patients' transportation needs. Recruitment activities from January 2019 to June 2022 have resulted in 57 participants (mean age: 63.7 years). Overall, the recruitment rate is 42.5% of patients contacted during face-to-face visits. Overcoming barriers to participation is key to helping patients with VLUs interested in research enrol in clinical trials aiming to improve healing outcomes in this vulnerable population. 相似文献
905.
906.
《European journal of surgical oncology》2023,49(3):533-541
BackgroundToday, there is still debate on the impact of neoadjuvant chemotherapy (NeoChem) on liver regeneration (LivReg). The objectives of this study were to assess the impact of NeoChem and its characteristics (addition of bevacizumab, number of cycles and time from end of NeoChem) on post-hepatectomy LivReg.Material & methodsStudies reporting LivReg in patients submitted to liver resection were included. Pubmed, Scopus, Web of Science, Embase, and Cochrane databases were searched. Only studies comparing NeoChem vs no chemotherapy or comparing chemotherapy characteristics from 1990 to present were included. Two researchers individually screened the identified records registered in a predesigned database. Primary outcome was future liver remnant regeneration rate (FLR3). Bias of the studies was evaluated with the ROBINS-I tool, and quality of evidence with the GRADE system. Data was presented as mean difference or standard mean difference.ResultsEight studies with a total of 681 patients were selected. Seven were retrospective and one prospective comparative cohort studies. In patients submitted to major hepatectomy, NeoChem did not have an impact on LivReg (MD 3.12, 95% CI -2,12–8.36, p 0,24). Adding bevacizumab to standard NeoChem was associated with better FLR3 (SMD 0.45, 95% CI 0.19–0.71, p 0.0006).DiscussionThe main drawback of this review is the retrospective nature of the available studies. NeoChem does not have a negative impact on postoperative LivReg in patients submitted to liver resection. Regimens with bevacizumab seem to be associated with better postoperative LivReg rates when compared to standard NeoChem. 相似文献
907.
Pernille Dehn MEd Susan Munch Simonsen RN MEd Mette Linnet Olesen RN MPH PhD 《Scandinavian journal of caring sciences》2023,37(2):549-560