Digital Commons Network^™

A Comparative Study Of Unfolding Techniques For Gamma-Ray Spectra Obtained With Nai(Tl) Scintillation Detectors, Mwingereza J Kumwenda

Tanzania Journal of Science

Iterative unfolding methods are frequently used in acquiring true gamma-ray spectra from the measured spectra. However, the peak resolution of iterative unfolding methods especially, in Gold algorithm method is very challenging, especially in the case of scintillation detectors, where several instrumental artifacts and distortions interfere with the true spectral shape. Therefore, this paper presents a comparative study of the direct matrix inversion unfolding method (DMIUM) and iterative unfolding method with emphasis on the Gold algorithm method (GAM) in converting measured gamma-ray spectra of the NaI(Tl) scintillation detector into the true gamma-ray spectra. The Monte Carlo simulation based on the Geant4 …

Assessing The Variability Of Heavy Rainfall Events During Gu Rainfall Season In Somalia, Abdinasir Elm, Paul Ts Limbu

Tanzania Journal of Science

The occurrence of heavy rainfall is a significant contributing factor to the occurrence of flooding in Somalia during the rainy season, resulting in substantial socio-economic consequences. This study investigates the spatial-temporal variations of Heavy Rainfall Events (HREs) occurring from March to May (MAM), commonly referred to as the Gu rainy season, in Somalia from 1991 to 2020. The analysis employed the Empirical Orthogonal Function method to investigate the spatial-temporal variations of HREs. The findings indicate that there is an unequal distribution HREs throughout the country, with the southern regions exhibiting the highest concentration of HREs of about 340 HREs, while …

Spatio-Temporal Trends And Change Detection Of Surface Air Temperature In Tanzania: October To April Season., Laban Lameck Kebacho, Exavery Kisesa Makula, Paul Tilwebwa Shelleph Limbu

Tanzania Journal of Science

The paper examined the spatio-temporal variability and trends of minimum temperature (T-min), mean (T-mean), and maximum temperature (T-max) in Tanzania from October to April using the Climatic Research Unit Time Series version 4.06 from 1951-2021. The traditional Mann-Kendall (MK) test, modified MK, and Sen’s slope test were used to determine the trend direction and magnitude of the T-mean, T-max, and T-min trends, respectively. Sequential MK, standard normal homogeneity, and Pettitt tests were used to detect abrupt changes, while the Hurst coefficient (H) assessed future trend behavior. Results show a statistically significant increasing trend of 0.14 °C per decade, 0.18 °C …

Design And Optimization Of Eco-Friendly Biocomposite Films For Packaging Applications Using Response Surface Methodology, Ba Omoike, Fe Okieimen, C Imoisi

Tanzania Journal of Science

The use of synthetic polymers as packaging materials constitutes environmental pollution due to the accumulation of plastic waste after they are discarded. This study aimed at preparing and optimizing an environmental-friendly carboxymethyl starch/PVA/kaolin composite film using response surface methodology to develop potential solutions for replacing synthetic packaging and optimize the formulation of the biocomposite films. The biocomposite films were prepared by solution casting method. The interactive effect of carboxymethyl starch (CMS) (2.0-5.0 g), poly(vinylalcohol) (PVA) (0.0-3.0 g) and kaolin (0.00-0.22 g) on the ultimate tensile strength (UTS), percentage elongation at break (%EB) and water vapour permeability (WVP) were determined. The …

Analysis Of Unsteady Convective Boundary Layer Flow With Magnetic Fields, Chemical Reaction, Thermal Radiation And Variable Fluid Properties, Jonas A. James, Makungu J. Ng’Oga, Augustino I. Msigwa, Ali A. Omary

Tanzania Journal of Science

This study extends the previous work by Kitengeso et al. (2018) by investigating unsteady convective boundary layer flow, incorporating magnetic fields, chemical reactions, radiation, and variable fluid properties over the inclined plate. The boundary layer and Boussinesq approximations are used to derive the magnetohydrodynamic flow equations. Thereafter, the equations are transformed into similarity form using similarity variables and then solved using the 4th order Runge - Kutta method. The key parameters such as the magnetic parameter, chemical reaction rate, variable fluid properties, unsteadiness, convection, and radiation parameter significantly affect flow behavior over an inclined plane. It was found that increasing …

Single-Step Sol-Gel Synthesis Of Cuo/Tio2 Nanoparticles: Microstructure And Materials Characterization, Godlisten N Shao

Tanzania Journal of Science

Copper oxide modified titanium dioxide (CuO/TiO2) nanoparticles have been widely reported owing to their excellent performance in heterogeneous photocatalysis. However, their industrial and large-scale production is hampered by tedious and expensive preparation methods. The present study presents a single step sol-gel synthesis of CuO/TiO2 nanoparticles with improved physicochemical properties. A series of CuO/TiO2 nanoparticles were synthesized by a modified sol-gel approach using titanium oxychloride as a TiO2 precursor in the absence of additives. The samples were examined by high-resolution TEM, SEM-EDAX, XRD, XRF, XPS, Raman spectroscopy, nitrogen gas physisorption studies, and UV-visible DRS analyses. It was found that the proposed …

Uncertainties In Measuring Lifetimes Of Nuclear Excited States Using A Fast Electronic Timing System Made Of Nai (Tl) Scintillators, Innocent J Lugendo

Tanzania Journal of Science

Measurements of the lifetimes of nuclear excited states need to be as accurate as possible due to their crucial role in making or verifying various theoretical predictions in the nuclear science and astrophysics. Nevertheless, metrological difficulties in these measurements have brought about controversies that significantly influence the quest to understand the atomic structure, decay processes and nuclear reactions. Among the obstacles are the accuracy and precision of the systems and techniques used for measuring the lifetime of an excited state. It follows that any hypothesis regarding the nuclear behavior can only be considerable upon verification and accountability of stability and …

Cytotoxicity Of Heliotropium Indicum Methanolic Leaf Extract In Mice, Claudius D Luziga, Benedictor J Jagadi, Jackson A Ngou, Frida R Mgonja

Tanzania Journal of Science

Heliotropium indicum grows well in wet fertile soils often near rivers and lakes in tropical and subtropical countries. It contains phytochemicals with beneficial health effects. However, information is scarce on its cytotoxicity. The objective of this study was to determine cytotoxic effects of methanolic leaf extract of the plant in mouse organs. Mice were randomly divided into four groups: Control group A received distilled water 10 ml/kg. Groups B, C, and D received orally plant leaf extract at doses of 5 mg/kg, 10 mg/kg, and 15 mg/kg respectively per day for 7 days. At the end of day 7 mice …

Antioxidant Potential Of Stingless Bee Honey From Mangrove And Montane Vegetation Types In Tanzania, Christopher Alphonce Mduda, Mkabwa Lawrence Katambo Manoko

Tanzania Journal of Science

Stingless bee honey is a rich source of antioxidants and is highly regarded in traditional medicine for the treatment of various ailments. The antioxidant capacity of honey can be influenced by its origin and the floral resources used by bees. Consequently, this study evaluated the antioxidant potential of stingless bee honey from two vegetation types: montane and mangrove. The honey samples displayed remarkable antioxidant potential, with notable levels of total phenolic content (197.0–263.1 mg GAE/100 g), total flavonoid content (118.5–156.7 mg QE/100 g), ascorbic acid (25.1–30.0 mg/100 g), lycopene (2.8–3.7 mg/100 g), β-carotene (0.8–1.7 mg/100 g), DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activity …

Developing A Roadmap For Green Port In Timor-Leste, Emanuel Da Silva Maia

World Maritime University Dissertations

No abstract provided.

Repeated Bed Moves In A Community Treatment And Assessment Unit (Catu), Exploring The Impact On Patients And Nursing Staff, Erica Simmonds

South West Clinical School Journal

#400WORDS: CHIEF NURSING OFFICER’S RESEARCH FELLOWS EVIDENCE IMPLEMENTATION PROJECTS

The Efficacy Of Transcutaneous Electrical Stimulation In Reducing Acute Phantom Limb Pain: Patients’ Perspectives, Jennifer Bernthal

South West Clinical School Journal

#400WORDS: CHIEF NURSING OFFICER’S RESEARCH FELLOWS EVIDENCE IMPLEMENTATION PROJECTS

Terrains Of Country: Mapping Co-Design Methods, Julie Nichols, Uncle Lindsay Thomas, Travis Thomas, Jared Thomas, Fu Hong Tang, Delene Weber

ASEAN Journal of Community Engagement

This paper explores the ‘discursive’ as well as the physical terrains of Country as part of a co-design methodology employed with Nukunu. It examines a curatorial and archival perspective in its documenting of Nukunu Country forming part of the Time Layered Culture Map (TLCMap) digital humanities infrastructure project. A literature review from Aboriginal and non-Aboriginal scholars presents perspectives around decolonizing Western ontological and epistemological structures as a mode of disrupting current, entrenched codification of knowledge. This paper seeks primarily to explore the Indigenization of information shared and re-presented in the co-design exercises of designing on Country to contribute to the …

Development Of A Spray Pipe Evaporator For Application On Unproductive Salt Farm Land In Indonesia, Srie Muljani, Ketut Sumada, Alfian Rizki Pradana, Caecilia Pujiastuti

ASEAN Journal of Community Engagement

This article discusses the development of a prototype spray pipe evaporator and its efficiency in producing salt in Indonesia. Due to the length of the salt harvesting season in Indonesia, many salt farmers have closed their business doors, leaving many salt ponds abandoned. The spray pipe evaporator prototype was designed to produce a brine solution with a salinity of 23–24 Be from seawater, which has a salinity of 2.5–3.5 Be, in less than 3 days. This is faster than the conventional process of a brine solution salinity of 24 Be. The prototype spray pipe evaporator was assessed in a 20 …

Black Soldier Fly Larvae (Bsfl) Bioconversion For Circular Economy: A Study In Polaman Village, Siswo Sumardiono, Rizka Amalia, Syaikha Butsaina Dhiya’Ulhaq, Nurika Nazilatul Ilmi, Hermawan Dwi Ariyanto

ASEAN Journal of Community Engagement

Conventional organic waste management methods often lead to environmental degradation and underutilization of valuable resources. In rural areas, such as Polaman Village, limited awareness and inefficient disposal systems exacerbate these issues, thus necessitating innovative and sustainable solutions. This study explores black soldier fly larvae (BSFL) bioconversion as a community-based solution for organic waste management, addresses environmental challenges, and promotes economic empowerment by converting waste into valuable by-products. The study employed a mixed-methods approach, beginning with baseline assessments of waste generation and existing management practices to identify community needs. Educational workshops and hands-on training sessions introduced BSFL bioconversion techniques to local …

Assessing The Environmental Impact Of Municipal Solid Waste, Ojo Oluwayinka Florence, Olaniyan Olatunji Sunday, Akolade Adebola Saheed, Alabi Oluwaseyi Omotayo, Olaomotito Precious Adesope, Adebayo Kehinde John

Journal of Environmental Science and Sustainable Development

Municipal solid waste (MSW) management presents significant environmental challenges, especially with increasing urbanization and population growth. This study assesses the environmental impacts of MSW, focusing on waste composition, management practices, and their effects on air, water, and soil quality. The primary objective is to evaluate how MSW contributes to environmental degradation and to explore strategies for mitigating these impacts. A hypothesis was developed that optimizing waste composition through proper sorting and treatment can reduce the environmental footprint of MSW management by at least 10% in terms of leachate production and greenhouse gas emissions. Samples were collected using a randomized sampling …

Determining The De-Dieselisation Priorities Of Distributed Diesel Generators In An Electricity Company, Kresna Nurdianto, Ratih Dyah Kusumastuti

Journal of Environmental Science and Sustainable Development

The Indonesian Electricity Company (PLN) is one of the main players in the energy transition in Indonesia, and the company plans to achieve net zero emissions by 2060. One way to do this is by implementing the de-dieselisation program, i.e. reducing the use of diesel power plants (PLTD) with new energy and renewable power plants. The Indonesian electricity supply business plan (RUPTL) 2021-2030 targets the reduction of electricity supply from PLTD by 87% by 2030. The program requires a method to determine the order of priorities of PLTDs to be de-dieselised. This research uses multicriteria decision making, namely, analytical hierarchy …

Sustainable Practices And Green Marketing In Healthcare Sector: Visual Trends And Future Insight, Muhammad Alfarizi, Lissa Rosdiana Noer

Journal of Environmental Science and Sustainable Development

The healthcare sector faces critical challenges, including climate change, rising healthcare demands, and resource inefficiencies, making sustainability a priority. This study investigates the integration of sustainable practices and green marketing within the healthcare sector using a bibliometric analysis of 194 journal articles published from 2015 to 2024. Key research questions explore evolving trends, thematic areas, and gaps in the literature to address sustainability issues. The study employs a rigorous five-phase bibliometric methodology, utilizing Scopus database data and tools like Bibliometrix and VOSViewer to identify key themes and relationships. The research demonstrates an annual growth rate of 56.24%, reflecting the rising …

Empowering Local Heroes: A Study On Mindfulness, Self-Core Evaluation, And Agreeableness In Indonesian Climate Village Program, Daniswara Krisna Prabatha, Seger Handoyo, Suryanto Suryanto

Asia-Pacific Social Science Review

This comprehensive study explores the intersection of mindfulness, self-core evaluation, and agreeableness with local hero leadership, a similar framework to servant leadership, within Indonesia’s Climate Village Program (ProKlim). Employing a quantitative research methodology, this paper examines how these psychological traits impact the effectiveness of local hero leadership, a pivotal element in community-driven environmental initiatives. The study's aim is to understand the impact of the local hero's nature and character on leading ProKlim effectively. The research investigates the role of a local hero as a servant leader, delving into how mindfulness contributes to awareness and responsiveness, how self-core evaluation relates to …

A Catholic Positive Youth Development Model Based On The Context Of The Catholic Church In Thailand, Sarawin Patsriruang

Asia-Pacific Social Science Review

In 2007, the Catholic Youth Council of Thailand was restructured into the Catholic Commission for Laity on Youth Desk to collaborate with all Catholic youth organizations in Thailand and expand the work of Catholic youth development. Despite the announcement of its 10 major youth development plans since 2015, there is still an opportunity to incorporate the widely adopted Positive Youth Development (PYD) approach into its projects and programs. Similarly, research on Catholic youth development reveals a gap in the concrete application of PYD. To address these practical and research gaps, this study aims to develop a PYD model suitable for …

Length-Weight Relationship And Condition Factor Of Three Cichlids From The Tono Dam, Ghana, Emmanuel O. Kombat, Elijah D. Angyiereyiri, Sandra A. Atindana, Elliot H. Alhassan

Tanzania Journal of Science

The length-weight relationship (LWR) and condition factor of three Cichlids, namely, Sarotherodon galilaeus, Coptodon zillii and Oreochromis niloticus from the Tono dam in Ghana, were investigated. A total of 1,870 individuals of the target species were randomly collected from 20 artisanal fishermen using gill nets to fish from January to December 2015. Each species was sorted by sex, and each fish's total length (L) and body weight (W) were measured and recorded. Simple linear regression plots of weight against length were computed, and the slope of the regression line, ‘b’ and intercept of the regression line, ‘a’ of each species …

Identifying Factors Of Consumer’S Purchase Intention On E-Cars, Dhita Nur Maulida, Fatya Alty Amalia

ASEAN Marketing Journal

Manuscript type: Research Article

Research Aims: To evaluate the factors that can shape attitudes to use and purchase intentions for e-cars, either directly or through mediating variables.

Design/methodology/approach: Data were collected through a quantitative approach by administering a survey to 410 respondents, both those who already owned an e-cars and those who did not. Analyzed using the Partial Least Squares Structural Equation Modeling (PLS-SEM) method.

Research Findings: The output shows that Performance Expectancy and Social Influence significantly influence Attitude Toward Using and Purchase Intention. Meanwhile, Facilitating Condition positively affects Attitude Toward Using, but requires the mediation of Attitude Toward …

The Empowerment Of Consumers With Disabilities: The Role Of Self-Esteem, Accessibility, And Access To Information, Megawati Simanjuntak, Fauzia Rahmi, Santi Utami Dewi

ASEAN Marketing Journal

Consumer empowerment in Indonesia remains relatively low, particularly for individuals with disabilities. This study investigates the roles of accessibility, self-esteem, and information access in empowering disabled consumers. A total of 100 participants with physical disabilities, aged 17 and older, were surveyed regarding their online and offline purchasing experiences. Data were collected via an online questionnaire and analyzed using SEM PLS. Results indicate that self-esteem and information accessibility significantly influence the empowerment of consumers with disabilities, with the Disabled Consumer Empowerment Index categorized as "not empowered." Notably, the knowledge dimension received the lowest scores based on a traffic-light system. These findings …

From Virtual To Reality: The Influence Of Digital Engagement And Memorable Experiences On Tourist Revisit Intentions, Tz-Li Wang, Muhammad Azizurrohman

ASEAN Marketing Journal

Research Aims: This study investigates the role of Digital Engagement in mediating the relationship between Marketing Mix, Destination Image, and Revisit Intentions in the tourism industry. It also examines how Technology Adoption and Memorable Tourism Experiences moderate this relationship, providing a deeper understanding of the factors that enhance tourist loyalty in a digitally driven travel environment.

Design/Methodology/Approach: A quantitative research design using Partial Least Squares Structural Equation Modeling (PLS-SEM) was applied to analyze survey data collected from international tourists who visited Taiwan. The study assessed the direct, indirect, and moderating effects of key tourism variables using reliability and validity tests, …

Predicting Tuberculosis Vulnerability Based On Environmental Factors Using Multi-Criteria Analysis In Bukittinggi, Eka Budi Satria, Indang Dewata, Iswandi Umar, Nurhasan Syah, Linda Handayuni, Evi Hasnita

Media Kesehatan Masyarakat Indonesia

Tuberculosis is still an infectious disease problem and the main cause of death in Indonesia, where there was an increase in cases from 301 per 100,000 population (2020) to 354,000 per 100,000 population (2021), with the death rate increasing by 55%. This research aims to determine the TB vulnerability cluster influenced by the main risk factors, namely TB prevalence, cure rate, immunization, population density, and population arrivals in Bukittinggi, using the Weight Product (WP) analysis method, and then describe them by mapping tuberculosis vulnerability. The findings indicate that four sub-districts exhibit the highest levels of tuberculosis vulnerability: Tarok Dipo (0.0379), …

Determinants Of Wasting Among Children Aged 6–23 Months In Indonesia, R. Trikoriyanto E. Koritelu, Ahmad Syauqy, Ani Margawati

Media Kesehatan Masyarakat Indonesia

Wasting is a form of malnutrition that is a significant concern globally, including in Indonesia. It has a detrimental impact on children's health, the quality of human resources, and a country's overall development. This study aims to examine the prevalence and risk factors associated with wasting in children aged 6–23 months in Indonesia. The study design is cross-sectional, utilizing secondary data from the 2022 Indonesian Nutrition Status Survey. Data collection was conducted throughout Indonesia between March and December 2022. The sample size for this study was 70,414 children aged between 6 and 23 months. Bivariate analysis (χ² test) was …

Building Hope: Program For Handling Psychosocial Problems Of People Living With Hiv/Aids In Denpasar, Fitasya Khairunnisa, Oman Sukmana, Zaenal Abidin, Juli Astutik

Media Kesehatan Masyarakat Indonesia

The research aims to describe the forms of Psychosocial Problems Experienced by People Living with HIV/AIDS (PLWHA) and the programs of the Spirit Paramacitta Foundation to overcome the psychosocial problems of PLWHA. The research location was the Spirit Paramacitta Foundation Denpasar, Bali Province. The research uses a qualitative descriptive. The data collection techniques are through observation, interviews, and documentation. Research subjects and informants were determined purposively. Data analysis techniques refer to the perspective of Miles, Huberman, and Saldana, which includes the processes: data collection, data condensation, data presentation, and conclusion and verification. The data validity techniques used are extended observations …

Modelling The Effects Of Antiretroviral Therapy On Kidney Diseases Among Hiv Infected Individuals In Tanzania, Janeth Pancras Mchwampaka, Eunice Mureithi, Nyimvua Shaban Mbare

Tanzania Journal of Science

This study examined the role of highly active antiretroviral therapy (HAART) in the dynamics of kidney diseases among HIV-infected individuals. A deterministic model was formulated for the dynamics of kidney disease in HIV-infected people with HAART as treatment in the model. Numerical simulations showed that though HAART reduces HIV progression to the AIDS stage, there is an increase in HIV-related kidney diseases. Also, the result obtained in this study showed that reducing the effective contact rate of HIV and improving the effectiveness of HAART by 99% in preventing the progression from HIV without symptoms group to HIV-related kidney diseases can …

Geochemical Characterization Of Hydrocarbon Source Rocks In The Jurassic – Cretaceous Ruvu Sub-Basin- Within The Coastal Basin Of Tanzania; Implications For Petroleum Prospecting., Hadija H Maumba, Charles H Kasanzu

Tanzania Journal of Science

In this study, we characterize hydrocarbon source rocks from the Ruvu sub-basin’s Kiwangwa well-1 using organic matter, total organic carbon (TOC), rock-eval pyrolysis and vitrinite reflectance data. Analytical results indicate fair to excellent TOC contents in the sub-basin, a feature suggesting conditions that favor organic matter production and preservation. Kerogen types II to IV are inferred for the Kiwangwa well-1 sediments. Using TOC vs S2 for the Early Jurassic and Triassic of Kiwangwa well -1 at depth intervals, good to very good source rocks are inferred. This suggests high generative organic matter suitable for hydrocarbon production. None generative organic matter …

Assessment Of Reactive Dyeing Of Cotton Using Seawater, Liberato V Haule

Tanzania Journal of Science

This study investigated the effects of auxiliary chemicals on reactive dyeing of cotton fabric using seawater as an alternative to freshwater. The study involved dyeing of 100% cotton fabric with reactive blue 21 using both fresh and seawater. The effects of Na2SO4, NaCl and Na2CO3 auxiliaries were assessed on dye exhaustion, fixation and colour strength. Reactive dyeing using seawater with a pH 9 which contained Na+ (882.4 mg/L), Cl- (938 mg/L), Ca2+ (1200 mg/L), CO3-2(3000 mg/L), Mg2+(1030 mg/L) and alkalinity (4615 mg/L), resulted in exhaustion rate of 54%, colour strength of 0.098 and fixation rate of 44%. While dyeing using …