4 research outputs found
Absorption and fluorescence spectroscopic analysis using compact, linear variable filter based, detection platforms
No full textSpectroscopic analysis is an integral part of biological and chemical sensing. However, most spectroscopic equipment is relegated to laboratories. Compact and portable alternatives to conventional spectroscopic tools allow for testing outside of laboratory settings. This is achieved by making the underlying equipment affordable and easy to use while preserving reasonable accuracy and sensitivity. Due to their ubiquity, and constantly improving hardware and software, smartphones represent a favorable candidate for integration with spectroscopic technologies. This work presents the design, fabrication and characterization of compact measurement platforms capable of both absorption and fluorescence spectroscopic analysis using linear variable filters (LVF). The platform's potential for integration into next generation smartphones is demonstrated by the use of a conventional CMOS image sensor in conjunction with the LVF to create the detection element. An LVF-based benchtop detection setup is initially presented followed by its miniaturized successors: compact absorption and fluorescence detection platforms. A series of tests is discussed, most notably an enzyme-linked immunosorbent assay used to measure concentrations of human fetal fibronectin, a predictor of preterm birth, as a real-world contextualization of the absorption platform.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2019-08-01The student, Saoud Almulla, accepted the attached license on 2017-07-21 at 13:03.The student, Saoud Almulla, submitted this Thesis for approval on 2017-07-21 at 13:53.This Thesis was approved for publication on 2017-07-21 at 14:01.DSpace SAF Submission Ingestion Package generated from Vireo submission #11579 on 2017-09-29 at 11:20:19Made available in DSpace on 2017-09-29T17:52:35Z (GMT). No. of bitstreams: 2
ALMULLA-THESIS-2017.pdf: 7657642 bytes, checksum: 44bd3a4d07642dde8f3b6da47d7a41d8 (MD5)
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Previous issue date: 2017-07-21Embargo set by: Colleen Fallaw for item 103526
Lift date: 2019-09-29T17:52:45Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemLimited Restriction Lifted for Item 103526 on 2019-09-30T09:15:17Z
Retraction notice to “Rechargeable Batteries for Energy Storage: A review” [e-Prime - Advances in Electrical Engineering, Electronics and Energy 8 (2024) 100510]
No full textThis article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal).Suspicious changes in authorship between the original submission and the revised version of this paper were discovered.The paper was originally submitted by Ehsan Kianfar as single author. Co-authors Chou-Yi Hsu, Yathrib Ajaj, Ghadir Kamil Ghadir, Hayder Musaad Al-Tmimi, Zaid Khalid Alani, Ausama A. Almulla, Mustafa Asaad Hussein, Ahmed Read Al-Tameemi, Zaid H. Mahmoud, Mohammed Ahmed Mustafa, Farshid Kianfar, and Sajjad Habibzadehwere were added to the revised paper without explanation and without exceptional approval by the journal editor, which is a violation of the journal's policies. The publisher reached out to the authors for an explanation, but they failed to provide a satisfactory explanation to these changes.The Editor has determined that the authorship and the findings of the article cannot be relied upon and has decided to retract the article
Experiencing the Unprecedented COVID-19 Lockdown: Abu Dhabi Older Adults’ Challenges and Concerns
No full textThis study focused on older adults (60+ years old) of both genders in Abu Dhabi during the COVID-19 pandemic before vaccines were made available (age ranged from 60 years to 75 years). They faced more strict rules of movement restriction and isolation that might have resulted in certain psychological feelings and social reactions. The main objective was to understand Abu Dhabi older adults’ psychological feelings during the pandemic and to identify their main concerns and challenges considering the various COVID-19-related policies and restrictions. The psychological feelings focused on fear, loneliness, sadness, irritability, emotional exhaustion, depressive symptoms, sleeping disorders, overeating, and excessive screen use. The objectives also included the changes in the psychological feelings concerning time. Other objectives covered better understanding the differences in (some activities) compared to the other age categories. Data were gathered through an online survey of community members from February to July 2020 as part of government initiatives (Department of Community Development). Responses were collected from 574 older adults in Abu Dhabi (60.1% male and 39.9% female). The analysis mainly used descriptive analysis, t-tests, analysis of variance (ANOVA), and simple trend analysis. For all tests, a p-value less than 0.05 was used for significance. The results pointed to the significant rise in feelings related to excessive screen use, fear, loneliness, and stress. The most significant concerns were related to more restrictions being imposed and not being able to see the grandchildren.The impact of new technologies on their quality of life was significantly reflected by respondents. The influence of the pandemic on older adults’ health and weight was also investigated. Analysis of variance, t-tests, and regression analysis with relevant tests were employed. The relevant results showed that some negative psychological feelings were common among older adults during the pandemic. However, the psychological feelings did not portray significant changes with time, except for sleeping disorders and overeating. Overall, older adults scored significantly different from other age groups on many challenges, concerns, and views regarding new technologies during the pandemic. No significant differences were observed regarding gender and marital status for the challenges and concerns. The research summarizes some policy guidance while noting some limitations of this study and future research directions
Marketing Strategies for Smart Buildings
No full textGlobally, there is a growing proportion of the need to optimize monitoring and facility management of new and existing built facilities. Smart buildings provide waste reduction to the environment, flexibility to facility users, and optimization opportunities to the owner. Several research projects explore the monitoring, management, and maintenance of smart buildings towards efficient facility management (FM). However, there is a lack of defined, effective, efficient, and successful marketing schemes for smart buildings. Furthermore, smart buildings utilize the different technological possibilities and advancements in the smart building business and impact relevant stakeholders such as clients, facility managers, and users. Therefore, the study aims to develop a marketing strategy for smart buildings. The study adopts an integrative approach as the underpinning theory. The study's methodology adopts a robust analysis of different market strategies for various building types in the construction industry. In addition, lessons are deducted from the building typologies, such as sustainable buildings, tall and green buildings. The proposed marketing strategy requires four defined phases: segmentation, targeting, positioning and differentiations. The marketing directions focus on activities, actors, and tools through a comprehensive, detailed, and interpretative literature review. The proposed adaptable market strategy integrates client and facility users, focusing on the main drivers for marketing smart buildings. Therefore, the study is significant for facility managers, developers, and facility users.This publication was made possible by the NPRP grant (NPRP 12S-0304-190230) from the Qatar National Research Fund (a member of Qatar Foundation) and Qatar University, College of Engineering (CENG) with project number QUCP-CENG-2020-1. The statements made herein are solely the responsibility of the author(s)
