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Acute Gastrointestinal Bleeding in COVID-19 Patients: A Systematic Review and Meta-Analysis
Umair Iqbal,Hafsa Anwar,Hafiz Umair Siddiqui,Muhammad Ali Khan,Faisal Kamal,Bradley D. Confer,Harshit S. Khara 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.4
Background/Aims: More than 100 million people to date have been affected by the coronavirus disease-2019 (COVID-19)pandemic. Patients with COVID-19 have a higher risk of bleeding complications. We performed a systematic review and metaanalysisto evaluate the outcomes of COVID-19 patients with signs and symptoms of acute gastrointestinal bleeding (GIB). Methods: A systematic literature search was carried out for articles published until until November 11, 2020, in the Embase,MEDLINE, Web of Science, and Cochrane Library databases. We included studies on COVID-19 patients with signs and symptomsof GIB. Results: Our search yielded 49 studies, of which eight with a collective 127 patients (86 males and 41 females) met our inclusioncriteria. Conservative management alone was performed in 59% of the patients, endoscopic evaluation in 31.5%, and interventionalradiology (IR) embolization in 11%. Peptic ulcer disease was the most common endoscopic finding, diagnosed in 47.5% of thepatients. Pooled overall mortality was 19.1% (95% confidence interval [CI]; 12.7%-27.6%) and pooled mortality secondary to GIBwas 3.5% (95% CI; 1.3%–9.1%). The pooled risk of rebleeding was 11.3% (95% CI; 6.8%–18.4%). Conclusions: The majority of COVID-19 patients with GIB responded to conservative management, with a low mortalityrate associated with GIB and the risk of rebleeding. Thus, we suggest limiting endoscopic and IR interventions to those withhemodynamic instability and those for whom conservative management was unsuccessful.
Umair Ahmed,Abdul Halim Abdul Majid,MdLazim Mohd Zin 한국유통과학회 2016 Asian Journal of Business Environment (AJBE) Vol.6 No.3
Purpose - The aim of this article is to outline the concept of work engagement and the importance of job resources including supervisor support and coworker support pertaining to work engagement. Research Design, Data, and Methodology - The article discusses the concept of work engagement and what empirical evidences suggest about its relationship with job resources including supervisor and coworker support. Result - Critical review of the literature has indicated towards strengths and pitfalls of social support resources including supervisor and coworker at work, particularly with regards to work engagement thus, requiring further empirical attention. Accordingly, the article has also indicated towards the critical significance of meaningful work for fostering employee well-being at work. Conclusions - The article has highlighted noteworthy empirical gaps in the body of knowledge concerning to job resources including supervisor support and coworker support and their relationship with work engagement. The article has also underlined the lack of research and potential of ‘meaningful work’ towards enhancing work engagement as well as, acting as a moderator between supervisor support, coworker support and work engagement relationship.
Umair Ali Toor,신현아,김동진 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.71 No.-
Efficiency of phosphorus recovery from polyaluminum chloride sludge is determined by chemicalinteractions between Al and P. Chemical structure of Al–P complex and their binding mechanisms in thePAC sludge were investigated with spectroscopy and chemical fractionation. More than 98% of the P wasbound with Al, out of which 70% was strongly bound. The ATR-FTIR analysis indicates that the majority ofthe P formed inner sphere complex with Al through ligand exchange. The availability of highly protonatedsurface for P sorption at low pH also supports the formation of Al–P outer sphere complex.
Umair KHAN,Yongan ZHANG,Madiha SALIK 한국유통과학회 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.11
This study aims to examine OL as a potential mediating variable in the relationship between IT and organizational performance. Organizational learning (OL) has been proposed as the mechanism to accomplish this task. Existing empirical research demonstrates that OL may indeed act as a mediator for the effect of IT on organizational outcomes. Also, existing literature discusses the use of technology in the organization, and the case for OL as the key knowledge process, and the intersection between technology and OL as a knowledgebased means for improving organizational performance. Many studies use a descriptive measure of OL despite the theory suggesting that a normative measure may be more appropriate. This study aims to address these concerns in a setting by using structural equation modelling (SEM) to compare the effectiveness of descriptive and normative measures of OL as mediating variables in knowledge-intensive organizations. Survey results support OL as a mediator between IT and organizational performance in addition to normative measures of OL outperforming descriptive measures. Implications for research and practice are discussed. To test the model, we will apply (SEM) structural equation modeling in the analysis of a moment structures (AMOS) on the empirical evidence collected from 218 Pakistani CEOs and top managers.
The Relationship between Depression and Insomnia Symptoms Amongst a Sample of UK University Students
Umair Akram,asha akram,Maria Gardani,Antonia Ypsilanti,Kristofor McCarty,Sarah Allen,Lambros Lazuras 대한수면학회 2019 sleep medicine research Vol.10 No.1
Research exploring the relationship between mental health difficulties and insomnia amongst stu- dents in the UK remains limited. This study further examined the extent of potential relationships between insomnia, anxiety and depression symptoms amongst university students in the UK. A sample of 487 students from four northern universities completed The Insomnia Severity Index, SLEEP-50, and Hospital Anxiety and Depression Scales. Approximately one fifth of students expe- rienced mild to severe levels of depressive symptoms, and two thirds reported anxious symptoms. One quarter of students indicated insomnia symptoms in the clinical range, however the preva- lence of sleep-disorders other than insomnia remained low (< 5%). Finally, symptoms of insomnia and apnoea were significantly related to depression, after controlling for co-morbid anxiety. The current outcomes highlight the high prevalence of depressive and insomnia symptoms amongst university students in the UK. Considering the relationship between insomnia and depression, stu- dent-focused mental health services should explore the possibility of treating insomnia to circum- vent depression.
( Umair Ahmed Siddiqui ),전은경 ( Eunkyung Jeon ) 한국의류산업학회 2017 한국의류산업학회지 Vol.19 No.1
To predict and foster professional research issues for the present and future, it is important to understand the stream of research trends. This study is to provide information of research trend through analysis of quantitative variables in 1,374 articles from the first issue to the present(2015) of the Fashion and Textiles Research Journal. As a result, in the former periods, articles in the field of textile science & technology and fashion design & historical concerns, and articles that used experiments and others as a research method were dominant; in the latter periods, articles in the field of fashion marketing & merchandising and apparel production & technology, and articles that used survey as a research method were dominant. According to each detailed research field and method, there were significant differences in the number of pages, authors and references of articles. In addition, it was found that the number of pages and the number of references increased sharply in the latter period, indicating that the contents of the papers were more detailed and faithful to references of other studies. Through the analysis of this study, it was found that Fashion and Textiles Research Journal published a variety of articles in the academic fields. The research information analyzed in this study will contribute to the future design for the research as well as the academic societies.