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2022

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Review Of The Imaging Performance And The Current Status Of The Cascade Gamma-Rays Coincidence Imagers, Leonid L. Nkuba Dr. Dec 2022

Review Of The Imaging Performance And The Current Status Of The Cascade Gamma-Rays Coincidence Imagers, Leonid L. Nkuba Dr.

Tanzania Journal of Engineering and Technology (TJET)

Various studies that have investigated the detection of gamma coincidence events have revealed that design factors and image reconstruction approaches dictate the spatial resolution, coincidence efficiency, and levels of statistical noise of the detection system. In the case of imaging, cascade gamma-ray coincidence (CGC) imagers coupled with collimated detectors offer promising values for both spatial resolution and coincidence efficiency. However, to date, no CGC imager with single or multiple collimated detectors has reported a performance level beyond 6.7 mm spatial resolution (FWHM) and 6.0 × 10-6 coincidence efficiency. Given the recent developments and the current interests in high resolution and …


Evaluation Of The Efficacy Of The Anti-Ulcer Oral Mucosal Protective Agent Radoralex® In The Prevention And Treatment Of Radiation-Induced Oral Mucosal Reactions Induced During Treatment Of Nasopharyngeal Carcinoma, Jun Yin, Jirui Xie, Jiawei Lin, Chengyin Weng, Shun Lu, Peng Xu, Shuo Zhang, Cheng Luo, Yecai Huang, Lu Li, Jinyi Lang, Mei Feng Dec 2022

Evaluation Of The Efficacy Of The Anti-Ulcer Oral Mucosal Protective Agent Radoralex® In The Prevention And Treatment Of Radiation-Induced Oral Mucosal Reactions Induced During Treatment Of Nasopharyngeal Carcinoma, Jun Yin, Jirui Xie, Jiawei Lin, Chengyin Weng, Shun Lu, Peng Xu, Shuo Zhang, Cheng Luo, Yecai Huang, Lu Li, Jinyi Lang, Mei Feng

Faculty, Staff and Student Publications

The aim of this study was to evaluate the efficacy and safety of antiulcer oral mucosal protectant-RADoralex® in the prevention and treatment of radiation-induced oral mucosal reactions elicited during intensity-modulated radiation therapy (IMRT). for locally advanced nasopharyngeal carcinoma (NPC). A total of 90 patients with locally advanced NPC who developed post-treatment grade 1 oral mucositis were selected for this study. They were randomly assigned to the experimental group (n = 44) treated by mouth rinsing with the RADoralex® during radiochemotherapy and the control group (n = 43) treated by mouth rinsing with sodium bicarbonate solution, and the patients’ oral mucosal …


Validating Financial Statement Comparability Assessment In Non-Profit Firms, Daniel Friesner, Andrew Brajcich Dec 2022

Validating Financial Statement Comparability Assessment In Non-Profit Firms, Daniel Friesner, Andrew Brajcich

The North American Accounting Studies

In a recent manuscript, Brajcich and Friesner (2022) proposed a new methodology to assess financial comparability in not-for-profit organizations. Their approach utilizes entropy-based information theory, and thus requires few prior assumptions about the formation and implications of financial statement comparability. This manuscript assesses the practical utility of the Brajcich and Friesner (2022) methodology by comparing its results to those generated by nonhierarchical cluster analysis. The analysis was conducted using balance sheets drawn from Washington State critical access hospitals in 2019, using a similar set of hospitals and an identical set of variables outlined in Brajcich and Friesner (2022). We find …


Voices, Stories And Experiences Of Black Women: Informing The Establishment Of A Trenton-Based Maternal And Infant Health Innovation And Research Center, Tirzah R. Spencer Phd, Mph, Barbara George Johnson Mph, J.D., Consuelo Bonillas Dec 2022

Voices, Stories And Experiences Of Black Women: Informing The Establishment Of A Trenton-Based Maternal And Infant Health Innovation And Research Center, Tirzah R. Spencer Phd, Mph, Barbara George Johnson Mph, J.D., Consuelo Bonillas

Center for Health Policy Development

The establishment of a Maternal and Infant Health Innovation and Research Center is one of nine recommendations outlined by the 2021 Nurture NJ Strategic Plan to reduce maternal and infant mortality and morbidity and ensure equity in care and in outcomes for mothers and infants of all ethnic groups. The purpose of this environmental scan is to provide input for the design of a Maternal and Infant Health Innovation and Research Center within Trenton.

Building on the Nurture NJ Initiative, this project is a deeper dive in its focus on Black and Latina women living in Trenton and surrounding areas. …


Concrete Technology In A Rapidly Growing Urban Environment – The Case Of Dar Es Salaam City, John K. Makunza Jkm Dec 2022

Concrete Technology In A Rapidly Growing Urban Environment – The Case Of Dar Es Salaam City, John K. Makunza Jkm

Tanzania Journal of Engineering and Technology (TJET)

Concrete is a building material that is used in great quantities second only to our use of water. The ingredient materials of concrete include cement, fine and coarse aggregates plus a reasonable amount of water, and sometimes additives. The construction of various structures like, residential buildings, commercial buildings, hospitals, schools, bridges, etc., needs good quality concrete. Good modern technologies are needed by the construction industry in order to effectively construct buildings which are durable. A study has been done with the main objective of assessing the concrete technologies existing in rapid growing cities in Sub-Sahara Africa like Dar es Salaam, …


Development Of An Operational Satellite-Based Flood Monitoring Model For Tanzania, Andrew Kimati Dec 2022

Development Of An Operational Satellite-Based Flood Monitoring Model For Tanzania, Andrew Kimati

Tanzania Journal of Engineering and Technology (TJET)

Timely information during water related disasters is of utmost importance for flood preparedness and risk reduction. However, the conventional ground-based photographic monitoring of flooded areas is an expensive and time-consuming exercise. Satellite remote sensing is a quick and affordable approach that can be used for concurrent floods detection at different scales. This is important as it facilitates timely information for emergency response to disaster management departments, even in scarcely instrumented catchments. This study presents a novel approach for flood tracking using satellite image remote sensing science to map flood affected areas immediately after occurrence of rainfall events. An open-source water …


Deployment Of Inductive Loop Vehicle Traffic Counters Along Trunk Roads In Tanzania, Daudi Simbeye Dec 2022

Deployment Of Inductive Loop Vehicle Traffic Counters Along Trunk Roads In Tanzania, Daudi Simbeye

Tanzania Journal of Engineering and Technology (TJET)

As Tanzania's population grows, there is a greater demand for efficient, effective, and strong road design, as well as a smooth transportation system with a balanced traffic management network architecture. To plan for maintenance and expansion of such a vast network, a credible data inventory and network condition must be established. The deployment of vehicle inductor loop counters along Tanzanian trunk roads is presented in this paper. At test sites, inductor loop sensors and control cards were used to capture vehicle traffic data, which was then wirelessly sent using GSM technology for vehicle classification verification and storage for future road …


Design And Implementation Of Cardiopulmonary Resuscitation Simulation Model, Mbazingwa Mkiramweni Dec 2022

Design And Implementation Of Cardiopulmonary Resuscitation Simulation Model, Mbazingwa Mkiramweni

Tanzania Journal of Engineering and Technology (TJET)

Cardiopulmonary resuscitation (CPR) is a life-saving procedure that can multiply a person's chances of survival after a cardiac arrest. The effectiveness of CPR procedures is heavily influenced by the individual skills of the rescuer providing assistance. Chest compressions delivered at an appropriate depth and rate, allowing full chest recoil and with minimal interruptions, are critical for improving cardiac arrest survival. The lack of quality CPR training models in developing countries has a significant impact on the quality of CPR training and skills acquired. Therefore, in this paper, we aim at improving CPR training by designing a high-fidelity CPR training manikin. …


Optimization Of Pulsed Laser Deposition Parameters For Single Crystalline (011) Oriented Tetragonal Pzt Thin Films, Mahamudu H. Mtebwa Dec 2022

Optimization Of Pulsed Laser Deposition Parameters For Single Crystalline (011) Oriented Tetragonal Pzt Thin Films, Mahamudu H. Mtebwa

Tanzania Journal of Engineering and Technology (TJET)

Recent advances in nanotechnology applications require the processing of high-quality thin films. A systematic study of the optimization of Pulsed deposition parameters for (110) oriented tetragonal PZT thin films is reported in this work. Prior to film deposition, a highly tetragonal Pb(Zr0.5, Ti0.95) or PZT 05/95 was selected to be deposited on (110) oriented Strontium titanate, SrTiO3 substrate, STO(110) to insure small compressive misfit strain. Unlike SRO, the LSOM bottom electrode was then successfully grown at 620 °C, 1.0 J/cm2 and a target-substrate distance of 3.9 cm. Finally, deposition parameters of PZT were progressively optimized through monitoring film morphological changes. …


Angiogenic Supports For Microvascular Engineering, Zain Siddiqui Dec 2022

Angiogenic Supports For Microvascular Engineering, Zain Siddiqui

Dissertations

Ischemic tissue disease is caused by a lack of circulation / blood supply to tissue. This can be treated by introducing a number of angiogenic (pro-blood vessel forming) factors into the tissue. This work presents strategies for ischemic tissue treatment utilizing a novel proangiogenic self-assembling peptide hydrogel platform. To demonstrate the utility of this platform, its use alone as an angiogenic therapeutic (both alone as a self-assembling hydrogel and with two-component systems), and its ability to vascularize implants is explored. Due to these angiogenic scaffolds demonstrating efficacy to regenerate microvasculature, this work evaluates diseases that can be treated by the …


A Conserved Oxalyl-Coenzyme A Decarboxylase In Oxalate Catabolism, Ninghui Cheng, Vincent Paris, Xiaolan Rao, Xiaoqiang Wang, Paul A Nakata Dec 2022

A Conserved Oxalyl-Coenzyme A Decarboxylase In Oxalate Catabolism, Ninghui Cheng, Vincent Paris, Xiaolan Rao, Xiaoqiang Wang, Paul A Nakata

Children’s Nutrition Research Center Staff Publications

The ability to biosynthesize oxalic acid can provide beneficial functions to plants; however, uncontrolled or prolonged exposure to this strong organic acid results in multiple physiological problems. Such problems include a disruption of membrane integrity, mitochondrial function, metal chelation, and free radical formation. Recent work suggests that a CoA-dependent pathway of oxalate catabolism plays a critical role in regulating tissue oxalate concentrations in plants. Although this CoA-dependent pathway of oxalate catabolism is important, large gaps in our knowledge of the enzymes catalyzing each step remain. Evidence that an oxalyl-CoA decarboxylase (OXC) catalyzes the second step in this pathway, accelerating the …


Computer-Based Interactive Project E-Book: A Guide For Genetic 1 Course To Enhance Biology Students’ Cognitive Learning Results, Hikmah Buroidah, Siti Zubaidah, Susriyati Mahanal, Azizul Ghofar Candra Wicaksono Dec 2022

Computer-Based Interactive Project E-Book: A Guide For Genetic 1 Course To Enhance Biology Students’ Cognitive Learning Results, Hikmah Buroidah, Siti Zubaidah, Susriyati Mahanal, Azizul Ghofar Candra Wicaksono

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to develop a computer-based interactive Genetics project guide e-book to enhance undergraduate biology students’ cognitive learning outcomes. This development was carried out because there had been no available written guidebook for the Genetics project, which resulted in non-optimum project implementation. The content in the e-book consists of a description of material related to Drosophila melanogaster, descriptions and videos of general procedures, PjBL-based learning activities, and quizzes. Lee and Owen’s development model was used in this study which consisted of 4 stages, (1) multimedia need assessment and analysis; (2) multimedia instructional design; (3) multimedia development and implementation; and …


Thesis Quality Of Primary School Teacher Education Department, Ramdhan Witarsa, Moh. Fauziddin, Zuwati Hasim, Lussy Midani Rizki Dec 2022

Thesis Quality Of Primary School Teacher Education Department, Ramdhan Witarsa, Moh. Fauziddin, Zuwati Hasim, Lussy Midani Rizki

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to describe the quality of students' thesis in the primary school teacher education study program. The method used in this research is descriptive qualitative case study. This method has three stages, namely: the description stage, the reduction stage, and the selection stage. The data in this study were sourced from 16 students graduating in 2020 and 2021 at one of the private universities in Riau. The results of this study can show that the quality of student thesis is stagnant and tends to decrease in quality. Therefore, this research can be used as a reference in improving …


The Correlation Of Scientific Reasoning And Argumentation (Sra): An Analysis Into Prospective Biology Teachers In Plant Physiology, Maisuna Kundariati, Herawati Susilo, Balqis Balqis Dec 2022

The Correlation Of Scientific Reasoning And Argumentation (Sra): An Analysis Into Prospective Biology Teachers In Plant Physiology, Maisuna Kundariati, Herawati Susilo, Balqis Balqis

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aimed to investigate the correlation of scientific reasoning and argumentation into prospective biology teachers in plant physiology discourse. This study was conducted at September-December 2021 through blended learning. Thirty prospective biology teachers get involved as participant in this research. Scientific reasoning and argumentation intervention trough PBL and measure by essay tests. Scientific reasoning indicator follows AACU. While scientific argumentation follow TAP. This research found there is correlation between scientific reasoning and argumentation, with R value of 0.556 which means that scientific reasoning skills and scientific argumentation are moderately correlated. The contribution of scientific reasoning to scientific arguments is …


Hubungan Tinggi Dan Lama Pemakaian High Heels Dengan Nyeri Punggung Bawah Pada Pramugari Maskapai X, Reza Almayda, Farahdina Bachtiar, Eko Prabowo, Purnamadyawati Purnamadyawati Dec 2022

Hubungan Tinggi Dan Lama Pemakaian High Heels Dengan Nyeri Punggung Bawah Pada Pramugari Maskapai X, Reza Almayda, Farahdina Bachtiar, Eko Prabowo, Purnamadyawati Purnamadyawati

Jurnal Fisioterapi Terapan Indonesia

Low back pain is discomfort in the lower back area in the form of a feeling of pain and discomfort. A flight attendant is a profession that uses high heels when working. The use of high heels can cause changes in the fulcrum of the body when walking. Problems occur when wearing high heels for a long time, causing the lumbar muscles to shorten and lower back pain to occur. The purpose of this study was to determine the correlation between the height of the heels and the length of use of high heels with complaints of low back pain …


Pengaruh Diaphragmatic Breathing Dan Endurance Exercise Terhdap Peningkatan Kapasitas Kardiorespirasi Pada Pasien Hospital-Acquired Pneumonia, Alifia Azzahra, Annisya Puspitarani, Zahra Sativani, Riza Pahlawi Dec 2022

Pengaruh Diaphragmatic Breathing Dan Endurance Exercise Terhdap Peningkatan Kapasitas Kardiorespirasi Pada Pasien Hospital-Acquired Pneumonia, Alifia Azzahra, Annisya Puspitarani, Zahra Sativani, Riza Pahlawi

Jurnal Fisioterapi Terapan Indonesia

The purpose of this case study is to determine the effect of diaphragmatic breathing and endurance exercise in hospital-acquired pneumonia (HAP) cases. HAP is a nosocomial pneumonia that occurs 48 hours or more after the patient is admitted to the hospital, without any signs of pulmonary infection at the time of initial treatment. The existence of clinical manifestations that appear, patients with HAP tend to avoid physical activity which can decrease the functional capacity of the respiratory system and have an impact on decreasing endurance. Diaphragmatic breathing exercise is thought to be able to help reduce shortness of breath, reduce …


Efektifitas Sustained Natural Apophyseal Glides (Snags) Terhadap Penurunan Nyeri Pada Kasus Nyeri Leher, Iman Santoso, Triana Karnadipa, Mita Noviana, Ummulkhair Sakinah Dec 2022

Efektifitas Sustained Natural Apophyseal Glides (Snags) Terhadap Penurunan Nyeri Pada Kasus Nyeri Leher, Iman Santoso, Triana Karnadipa, Mita Noviana, Ummulkhair Sakinah

Jurnal Fisioterapi Terapan Indonesia

Neck pain attacks 16.6% of the general adult population in Indonesia. This condition causes disruption of function and motion in the neck, so it requires physiotherapy intervention. Sustained Natural Apophyseal Glides (SNAGs) is a mobilisation with movement techniques that can decrease pain during exercise without causing any secondary pain. Materials and Methods. From the search results with various databases found 385 journals that match these keywords, screened titles and abstracts were found 30 articles were then filtered and 20 articles were selected. However, from the 20 articles, there will be further screening. The final result after selection is 5 articles. …


Perbandingan Efektivitas Isometric Quadriceps Exercise Dan Aquatic Exercise Terhadap Tingkat Nyeri Pada Lansia Dengan Knee Oteoarthritis : Literature Review, Dt.Arief Rahman Bestari, Nungki Marlian Yuliadarwati, Kurnia Putri Utami Dec 2022

Perbandingan Efektivitas Isometric Quadriceps Exercise Dan Aquatic Exercise Terhadap Tingkat Nyeri Pada Lansia Dengan Knee Oteoarthritis : Literature Review, Dt.Arief Rahman Bestari, Nungki Marlian Yuliadarwati, Kurnia Putri Utami

Jurnal Fisioterapi Terapan Indonesia

The elderly are the most susceptible subject to knee osteoarthritis (KOA), there are several good exercises for KOA, namely isometry quariceps exercise (IQE) and Aquatic exercise (AQE) are therapies that are often used to help improve and reduce pain in KOA. To compare the effectiveness of giving isometric quadriceps exercise and aquatic exercise on pain levels in the elderly with knee osteoarthritis. This study is a literature review where researchers will look for journals that match the theme and title to be discussed. articles or journals are obtained from several search engines, Pubmed and Google Scholar. The journal criteria used …


Pengaruh Diaphragmatic Breathing Dan Endurance Exercise Terhadap Peningkatan Kapasitas Kardiorespirasi Pada Pasien Hospital-Acquired Pneumonia, Alifia Azzahra, Annisya Puspitarani, Zahra Sativani, Riza Pahlawi Dec 2022

Pengaruh Diaphragmatic Breathing Dan Endurance Exercise Terhadap Peningkatan Kapasitas Kardiorespirasi Pada Pasien Hospital-Acquired Pneumonia, Alifia Azzahra, Annisya Puspitarani, Zahra Sativani, Riza Pahlawi

Jurnal Fisioterapi Terapan Indonesia

The purpose of this case study is to determine the effect of diaphragmatic breathing and endurance exercise in hospital-acquired pneumonia (HAP). Nosocomial pneumonia that occurs in 48 hours or more after the patient admitted to the hospital, without any signs of pulmonary infection. The existence of clinical manifestations that appear, patients with HAP tend to avoid physical activity which can decrease the functional capacity of the respiratory system and have an impact on decreasing endurance. Diaphragmatic breathing exercise is thought to be able to help reduce shortness of breath, reduce the work of the accessory muscles of breathing, improve breathing …


Terapi Manual Dan Terapi Latihan Meningkatkan Kemampuan Fungsional Pada Kasus Cervical Syndrome Et Causa Flat Neck : Studi Kasus, Faizah Abdullah Djawas, Rafiqoh Nur Huwaida Dec 2022

Terapi Manual Dan Terapi Latihan Meningkatkan Kemampuan Fungsional Pada Kasus Cervical Syndrome Et Causa Flat Neck : Studi Kasus, Faizah Abdullah Djawas, Rafiqoh Nur Huwaida

Jurnal Fisioterapi Terapan Indonesia

Cervical syndrome is a collection of symptoms, especially pain around the cervical spine. Pain in cervical syndrome is more common in conditions related to the deformity of the cervical vertebrae, one of which is a flat neck or conditions where cervical lordosis is reduced. When the lordosis curve disappears, the vertical load will be redistributed along the anterior portion of the cervical spine, causing pressure on soft tissue and surrounding bone. This can lead to various musculoskeletal problems. The combination of manual therapy and exercise is suggested to reduce problems such as pain, limitations of the range of motion (ROM), …


Hubungan Antara Durasi Penggunaan Smartphone Dan Keluhan Nyeri Leher Pada Tim E-Sport Mobile Legend, Sheilla Maurie Arthamevia, Farahdina Bachtiar, Eko Prabowo, Purnamadyawati Purnamadyawati Dec 2022

Hubungan Antara Durasi Penggunaan Smartphone Dan Keluhan Nyeri Leher Pada Tim E-Sport Mobile Legend, Sheilla Maurie Arthamevia, Farahdina Bachtiar, Eko Prabowo, Purnamadyawati Purnamadyawati

Jurnal Fisioterapi Terapan Indonesia

Smartphones are a real manifestation of technological progress as well as a device that works very complexly with access to the internet, social media and games. E-sports or cybersports connected to the internet network. Excessive use of smartphones, including for Mobile Legends E-sports players, can cause musculoskeletal disorders. Musculoskeletal disorders associated with smartphone use lead to neck muscle fatigue caused by poor posture. Using a smartphone for a long time can cause muscle tension. Long duration of smartphone use is the biggest factor that can cause complaints of neck pain. Purpose: This study aims to determine the relationship between the …


Stakeholder Perception Of Financial Incentive In Truck Appointment Systems At Chittagong Port, Suraya Yeasmin Jui Dec 2022

Stakeholder Perception Of Financial Incentive In Truck Appointment Systems At Chittagong Port, Suraya Yeasmin Jui

World Maritime University Dissertations

This dissertation investigates Chittagong Port Authority (CPA) stakeholder perceptions of financial incentives in Truck Appointment Systems (TAS), aiming to address the escalating congestion and operational challenges posed by peak-time truck arrival frequency. The objectives of this research are as follows: (i) To identify the factors that influence trucking companies to arrive at the CPA gate during peak hours. (ii) To evaluate stakeholder perceptions of the effectiveness of financial incentives in the TAS to reduce peak-time truck arrival frequency at Chittagong Port. (iii) To identify the key factors influencing stakeholder acceptance or resistance towards financial incentives in the TAS.

By employing …


Exploratory Study On Human Factors Affecting Safety In The Shipyard Of Pakistan, Bisma Khan Dec 2022

Exploratory Study On Human Factors Affecting Safety In The Shipyard Of Pakistan, Bisma Khan

World Maritime University Dissertations

The study of human factors has emerged as a critical element in understanding and improving the safety requirements of Pakistan’s shipyard. The dissertation attempts to study human factors in the risk-based environment and challenging duties of the employees associated with shipyard resulting in accidents and injuries.

While technology and equipment contribute to safety, human actions, decisions, and behaviours often play a critical role in causing accidents. As the number of accidents was increasing in the shipyard, the researcher realised the need to explore contributing factors. A quantitative survey approach was adopted to collect information. The results were compared among employees …


Applying Data Science And Machine Learning To Understand Health Care Transition For Adolescents And Emerging Adults With Special Health Care Needs, Lisamarie Turk Dec 2022

Applying Data Science And Machine Learning To Understand Health Care Transition For Adolescents And Emerging Adults With Special Health Care Needs, Lisamarie Turk

Nursing ETDs

A problem of classification places adolescents and emerging adults with special health care needs among the most at risk for poor or life-threatening health outcomes. This preliminary proof-of-concept study was conducted to determine if phenotypes of health care transition (HCT) for this vulnerable population could be established. Such phenotypes could support development of future studies that require data classifications as input. Mining of electronic health record data and cluster analysis were implemented to identify phenotypes. Subsequently, a machine learning concept model was developed for predicting acute care and medical condition severity. Three clusters were identified and described (Cluster 1, n …


‘How The Erde Is Of A Figure Round’: Mapping Space In The Buik Of Alexander The Conqueror, Katherine H. Terrell Dec 2022

‘How The Erde Is Of A Figure Round’: Mapping Space In The Buik Of Alexander The Conqueror, Katherine H. Terrell

Studies in Scottish Literature

Discusses the image of the world, the concept of a mappamundi, and comments on particular regions and countries, in Gilbert Hay's poem The Buik of Alexader the Conquerour, to argue that Alexander’s mapping, like his military campaigns, reconfigures space as territory that is amenable to exploitation, and that Hay's poem, the only Alexander poem to mention Scotland, shows an historical process, the "translatio imperii," "that will eventually circle back around to a Britain (and a Scotland) no longer imbued with treachery, but ready to assume power."


Audit Committee And Internal Control Effectiveness In Public Sector Entities, Cosmas R. Masanja Dec 2022

Audit Committee And Internal Control Effectiveness In Public Sector Entities, Cosmas R. Masanja

Business Management Review

This paper reports the findings of a study that examined the audit committee and internal control effectiveness nexus. The study worked on the assertion that the audit committee of the board enhances internal control effectiveness, which is widely documented and supported, more so in the private sector. As a result, many public sector entities ' governing boards are increasingly establishing such audit committees. Yet, it is unclear to what extent such increase in audit committees contribute to public sector entities ' internal control effectiveness, especially in developing economies. This study, therefore, examined the explanatory power of the audit committee ' …


Polymeric Nitrogen: Computational Catalysis And Materials Design, Safa Alzaim Dec 2022

Polymeric Nitrogen: Computational Catalysis And Materials Design, Safa Alzaim

Dissertations

The urgent climactic crisis currently endangering all life on earth is largely due to the combustion of fossil fuels as an energy source. This work combines physics, chemistry, mathematics and computer science to develop new ways to harvest, store and use sustainable energy. In particular, this work centers on polymeric nitrogen (PN). PN is highly desirable because the energy density is extremely high. This energy density lends PN to applications such as rocket fuel and energetic materials. Recently, the polymeric phase N8 was shown to be highly active for oxygen reduction reactions (ORR); the material is an excellent electrocatalyst …


Nondirect Line-Of-Sight Free-Space Optical Communications And Networks, Paa Kwesi Affir Esubonteng Dec 2022

Nondirect Line-Of-Sight Free-Space Optical Communications And Networks, Paa Kwesi Affir Esubonteng

Dissertations

Nondirect Line-of-Sight Free-Space Optical Communications (NLoS-FSOC) uses diffuse reflected light to establish communication between two or more stations that are with or without line-of-sight (LoS) to each other. Different from free-space optical communications (FSOC), NLoS-FSOC uses a diffuse reflector (DR) between a transmitter and a receiver so that LoS is not required between them but between the station and the DR. Unlike a mirror, the DR reflects the incident light to all directions and except to itself. That multidirectional reflection broadcast the optical transmission to all receivers with LoS to the DR. The optical broadcast channel establishes a true optical …


Naturally Derived Fibrous Scaffolds Containing Metabolic Factors For Bone Tissue Engineering, Apurva Limaye Dec 2022

Naturally Derived Fibrous Scaffolds Containing Metabolic Factors For Bone Tissue Engineering, Apurva Limaye

Dissertations

More than 500,000 bone grafting procedures are performed each year to treat bone defects, trauma, and non-unions. Current strategies, including autografts and allografts, face limitations that include donor site morbidity and poor integration, respectively. Treatments using the delivery of the growth factor, bone morphogenetic protein-2 (BMP2), result in ectopic bone formation and adverse effects at high doses. Tissue engineering strategies are utilized to combat these challenges. Natural biomaterials are commonly used as tissue engineering scaffolds due to their biocompatibility, biodegradability, and they can promote cellular function. However, animal-derived materials can have limitations in availability, lot to lot variability and potential …


Microplastics And Genetic Vectors Promoting The Dissemination Of Antimicrobial Resistance In Municipal Wastewater Treatment Processes, Ngoc Dung Pham Dec 2022

Microplastics And Genetic Vectors Promoting The Dissemination Of Antimicrobial Resistance In Municipal Wastewater Treatment Processes, Ngoc Dung Pham

Dissertations

The spread of antimicrobial resistance in the environment and especially its transfer into human pathogens have emerged as global issues. Activated sludge units at municipal wastewater treatment plants are "hotspots" converging a multitude of contaminants, including antibiotics, antibiotic-resistant bacteria (ARB), human pathogens, and microplastics. The prevalence of antibiotics can induce stress response of sludge microbial communities and promote the development of new resistance mechanisms and transmission venues, through which the dissemination of antibiotic resistance genes (ARGs) arises as mediated by mobile genetic elements (MGEs). In this doctoral dissertation, the impacts of microplastics and genetic vectors (i.e., MGEs and bacterial hosts) …