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Chemical Analysis, Antibacterial Activities And Uses Of Leaves And Calyces Of Hibiscus Sabdariffa Grown In Dodoma, Tanzania, Sartaz Begum, Derick R. Mwakimbwala, Gideon Sangiwa, Valence M.K. Ndesendo

Tanzania Journal of Science

Preliminary phytochemical screening of aqueous and ethanolic extracts of Hibiscus sabdariffa grown in Tanzania revealed the presence of secondary metabolites like steroids, tannins, saponins, glycosides, terpenoids, flavonoids along with L-ascorbic acid (vitamin C) and iron(II). Furthermore, both leaves and calyces showed antibacterial activities (agar well diffusion method) against selected bacterial species (Escherichia coli, Staphylococcus aureus, Salmonella typhi and Shigella sonnei), but calyces possessed potent antibacterial activities compared to leaves. The results also supported the claimed traditional uses of this plant. When interrogated during the cross-sectional study in Dodoma region, 54% of the respondents claimed the plant is used to treat …

Enhancing Germination Of Seeds Of A Multipurpose Tree Species Combretum Molle, Samora Macrice Andrew

Tanzania Journal of Science

Combretum molle R. Br. ex G. Don (Combretaceae) is a highly valued indigenous multipurpose tree species that has gained considerable attention in recent times due to its importance as a medicinal plant as well as an alternative species for wood and charcoal production. However, we lack adequate information on simple and appropriate methods that could be used to break its distinct seed dormancy to support domestication of wild populations apparently undergoing over exploitation and the negative impacts of deforestation. Eight pre-treatment methods involving complete removal of wing, complete removal of mesocarp, overnight soaking in cold water (24 °C) and partial …

Constraining The Origin And Age Of The Thermal And Cold Water In The Lake Natron Basin, Northern Tanzania, Edista A. Abdallah, Charles H. Kasanzu, Crispin P. Kinabo, Akira Imai, Mike J. Butler

Tanzania Journal of Science

Springs on the eastern and western shores of Lake Natron Basin (LNB), located within the eastern branch of the East Africa Rift System (EARS) in Northern Tanzania had a discharge temperature that ranged between 34.0 °C and 51.2 °C, while the pH varied from 8.0 to 10.7. The electrical conductivity (EC) ranged between 5,007 µS/cm and 49,200 µS/cm. Cold waters had a temperature of 31.9 °C to 32.5 °C, while the pH ranged between 8.0 and 8.3, and the EC ranged between 1,401 µS/cm and 3,806 µS/cm. The stable isotope composition varied between -2.4 ‰ and -5.3 ‰ for δ18O, …

Spatiotemporal Variability Of Drought And Its Relationships To Enso And Iod Indices In Somaliland, Mohamed S Bile, Paul Ts Limbu

Tanzania Journal of Science

Drought is one of Somaliland’s most prevalent natural hazards, causing serious socioeconomic and environmental harm. This study investigated the spatial and temporal variability of drought and its relationships with El Niño Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) indices using the Standardized Evapotranspiration Index (SPEI) from 1981 to 2020. The Mann-Kendall trend test and Sen's slope estimator were used to assess the trends of annual and seasonal SPEI time series. The Empirical Orthogonal Function (EOF) was employed to examine the dominant modes of the SPEI series, and Pearson and partial correlation analyses were performed to investigate the associations between …

Oral Impacts On Daily Performances Among People Living With Human Immunodeficiency Virus On Haart Era Attending Care And Treatment Clinics In Dar Es Salaam, Tanzania, Leonard Evarist, Irene Kida Minja

Tanzania Journal of Science

Oral disease/conditions are reported to have negative effects on the quality of life of People Living with Human Immunodeficiency Virus/Acquired Immune Deficiency Syndrome (PLWHIV/AIDS). This study aimed to assess the prevalence and causes of oral impacts on daily performances (OIDP) and its associated factors among PLWHIV/AIDS. A cross-sectional study was conducted among 218 PLWHIV/AIDS attending two HIV Care and Treatment Centres (CTCs) in Dar es Salaam. The study utilized a structured interview schedule containing questions on socio-demography and a single item of global oral health measure on the perception of current oral health status (OHS). A Swahili version of an …

Antibacterial Potency Of Allium Sativum, Psidium Guajava, Zingiber Officinale Roots Against The Food Poisoning Strains (Escherichia Coli 0157:H7 And Staphylococcus Aureus), Godfrey O. Mauti

Tanzania Journal of Science

Escherichia coli 0157:H7 and Staphylococcus aureus are notorious food poisoning bacteria of great effect on human health. This study determined the phytochemical constituents of ethanolic, vacuum liquid chromatography (VLC) filtrates of Allium sativum (garlic), Psidium guajava (guava), Zingiber officinale (ginger) and their antibacterial activities on E. coli 0157:H7 and S. aureus. In a laboratory-based controlled experiment, the antibacterial and inhibitory activities of the VLC filtrates in doses of 0.01, 0.02, 0.04, and 0.08g/mL were investigated on E. coli 0157:H7 and S. aureus using the agar well diffusion method and compared with a standard antibiotic. The indices of the zone of …

Phytochemical Constituents, Haematological Activities And Gc-Ms Analysis Of Isolated Oil Of Rosary Pea (Abrus Precatorius) In Wistar Rat Fed With High Lipid Diet, Osaro Iyekowa, Opara V Ndubuisi

Tanzania Journal of Science

The study is aimed at investigating the phytochemical constituents and haematological activities of the isolated oil in Wistar rat fed with high lipid diet. Powdered leaves of Abrus precatorious were extracted and phytochemical screening was done according to prescribed standard methods, while vacuum liquid chromatography (VLC) was adopted for oil isolation of the crude extract and characterized by gas chromatography-mass spectrometry (GC-MS). Thirty adult Wistar rats were randomly arranged into six groups (A, B, C, D, E and F) and treated under certain conditions. Haematological analyses were performed according to standard procedures. Saponins, alkaloids, terpenoids, flavonoids and glycosides were present. …

Morphological Variabilities And Identification Of Yam (Dioscorea Spp.) Genotypes From Major Growing Regions In Tanzania, Joseph I Massawe, Gladness E Temu

Tanzania Journal of Science

Yam (Dioscorea spp.) is a vegetatively propagated crop that belongs to the family Dioscoreaceae. In Tanzania, yam is mainly grown as a source of food and income generation, especially for smallholder farmers. In this study, an assessment of morphological variations among 74 genotypes of Dioscorea spp. collected from six major growing regions was conducted. Yam genotypes were maintained and planted at Tanzania Agricultural Research Institute-Kibaha for characterization. Data from fifty morphological variables were subjected to multivariate analysis using principal component analysis and cluster analysis. The first nine principal components with Eigenvalues > 1 accounted for 86.28% of the total variations. Some …

Determination Of Sugars, Amino Acids, Ph And Alcohol In Bamboo Beverage From Southern Highlands, Tanzania, Lilian D Kaale

Tanzania Journal of Science

The amounts of sugars and amino acids play significant roles in defining the fermentation process and quantifying the alcohol levels in beverages, while pH affects the biological stability, colour, oxidation rate, and protein stability of alcoholic beverages. This study investigated the sugar content, amino acids, alcohol levels, and pH of bamboo beverage from Tanzania's southern highlands. During storage, the sugars significantly decreased (p < 0.05), especially when kept at room temperature from 52.96 to 0.00 (source 1), 53.35 to 0.00 (source 2) and 53.57 to 0.00 (source 3) g/L for fructose, from 47.93 to 14.78 (source 1), 47.23 to 14.91 (source 2) and 47.61 to 14.77 (source 3) g/L for glucose, and from 0.40 to 0.00 (source 1), 0.36 to 0.00 (source 2) and 0.37 to 0.00 (source 3) g/L for sucrose after six days of storage. A total of 15 amino acids were determined from the bamboo beverage with tyrosine being the most prevalent (597.68 mg/L for source 1, 599.44 mg/L for source 2 and 597.83 mg/L for source 3), followed by valine (261.13 mg/L for source 1, 261.24 mg/L for source 2 and 262.54 mg/L for source 3), threonine (76.69 mg/L for source 1, 76.91 mg/L for source 2 and 77.13 mg/L for source 3), and serine (66.37 mg/L for source 1, 67.23 mg/L for source 2 and 66.68 mg/L for source 3). After six days of storage at room temperature, there was a significant decrease in pH from 4.04 to 3.63. Alcohol content ranged from 3.11 to 9.05% v/v at the room temperature storage. These results might facilitate the optimal use of bamboo beverages, which have been neglected due to lack of scientific information such as amino acid and sugar levels. Keywords:    Bamboo beverage, ulanzi, amino acids, sugars, alcohol content.

Antimalarial And Antimicrobial Activities Of Some Heteroleptic Metal(Ii) Complexes Of Sulfadiazine–Vitamin C: Synthesis And Spectroscopic Studies, Ikechukwu P. Ejidike, Mercy O. Bamigboye, Dorcas A. Fadare, Juliana B. Adetunji, Joshua A. Obaleye

Tanzania Journal of Science

Some new Ni(II), Zn(II), Co(II), Cu(II), and Cd(II) of mixed Sulphadiazine and Vitamin C complexes have been synthesized and characterized by different spectroscopic techniques such as FT-IR, elemental analysis, molar conductivity, and magnetic measurements. Both ligands used for this research work act as bidentate ligands towards the central metal ions coordinating through the nitrogen atoms of >C=N–, NH2 groups of Sulphadiazine and oxygen atoms of OH, CO groups of Vitamin C. Tetrahedral and square-planar geometries have been proposed for the complexes. The complexes are stable under atmospheric conditions. The ligands and their complexes were screened for antimicrobial activities against some …

Economic Implications Of International Energy Trade : A Comparative Analysis Across Developed, Developing, And Least Developed Nations, Mmaduabuchi Chigozie Emeghebo, Bintou K.B. Janneh, Semeria Youlo Maurice

World Maritime University Dissertations

Energy trade and consumption constitute vital components of international trade, a significance that has been amplified by escalating global industrialization and globalization. Nonetheless, the patterns of demand, trade, and utilization of energy differ markedly across various categories of economies, as delineated by the United Nations into Developed, Developing, and Least Developed Nations.

This study endeavors to elucidate the influence of international energy trade and consumption on the economic development trajectories of these three distinct categories of nations. Employing linear panel regression methodologies on panel data sets spanning the period from 1995 to 2021 for each category, the analysis reveals that …

Learning Life Skills Through English Materials: Integrating Life Skills In English Pedagogy, Laela Hikmah Nurbatra, Masyhud Masyhud, Hartono Hartono

ASEAN Journal of Community Engagement

John Dewey once said that “education is not an affair of ‘telling’ and being told, but an active and constructive process.” Accordingly, pedagogical processes should not simply be conducted by traditional lecturing, but rather, they should be constructive processes that gradually build the meaning-making process of the children through their active participation. Therefore, this paper aims to suggest materials that integrate English learning and LSE that are specifically designed for Indonesian children. As a follow-up project from the previous program, the current community service focuses on the implementation of life skills education (LSE) by integrating LSE with English learning in …

Enhancing The Professionalism Of Muslim Journalists In Handling Disinformation And Hoaxes During The Covid-19 Pandemic, Arba'iyah Satriani, Andalusia Neneng Permatasari, Firmansyah Firmansyah

ASEAN Journal of Community Engagement

The term alternative media refers to media that serves as alternative sources of information in lieu of mainstream media. In contrast to social media, alternative media are mass media entities that carry out journalistic functions even though they are affiliated with community organizations. Thus, alternative media are expected to provide authentic news just like mainstream media in Muslim countries. Islamic alternative media are also required to produce quality news, and this was especially seen during the COVID-19 pandemic, when a flood of information resulted in confusion among the community. In response, training that aimed to enhance journalistic professionalism for practitioners …

Improving Handwashing Behavior Of School-Age Children Through A Game-Based Educational Program, Ikbal Fradianto, Arief Andriyanto, Nur Akbar, Nita Arisanti Yulanda, Bahtiar Bahtiar

ASEAN Journal of Community Engagement

Handwashing plays an essential role in overcoming health problems. Washing hands is a straightforward exercise but will not be done if not adequately informed and drilled on it. School-age children are a vulnerable group relative to health problems, but at the same time, is an excellent group to be given appropriate education. Educating school- age children on the importance of washing their hands is critical to improving health behavior. This community-based research aims to increase school-age children’s handwashing knowledge, attitudes, and practices using a game-based educational program. As a result, there are improvements in the handwashing behavior of around a …

Exploring The Benefit Of Introducing Accounting And Finance Knowledge For Micro And Small Entrepreneurs During The Covid-19 Pandemic, Nurul Hidayah, Lucky Nugroho, Harry Suharman, Anees Janee Ali

ASEAN Journal of Community Engagement

This study aims to explore the benefit of introducing the accounting and finance knowledge for micro and small business enterprises, in particular during the time of the coronavirus disease 2019. The COVID-19 pandemic has severely affected the micro and small enterprises. A large number of industries faced the risk of lower sales, which in turn badly hit their businesses. To assist micro and small business entrepreneurs in maintaining sustainability by improving their bookkeeping skills by using digital applications, a team of lecturers from Universitas Mercu Buana, Indonesia, and Universiti Sains Malaysia, Malaysia, collaborated on socialization activities and interactions. The lecturers …

Northeastern Pennsylvania's Forgotten Labor Massacre: Analysis Pf The English Language Record Of The Lattimer Massacre, Jamie C. Costello

Graduate Masters Theses

The Lattimer Massacre occurred on September 10, 1897, in a small anthracite mining town in northeastern Pennsylvania. The bloody conflict erupted when an unarmed group of mostly Eastern European immigrant mine workers lethally clashed with militantly armed sheriff’s deputies who acted on behalf of private coal companies. Nineteen strikers died at the scene and dozens more were horrifically wounded. Despite the outraged shock of the community clamoring for justice which led to a murder trial that made international headlines, the Lattimer Massacre faded from local and national memory in the following decades. A combination of lingering nativist prejudice curated by …

Fool Me Once: Characterizing The Response Of Notophthalmus Viridescens To Multiple Exposures Of Batrachochytrium Salamandrivorans, Julia A. Mccartney

Graduate Masters Theses

The repertoire of defenses a host may use against a pathogen is often thought of in the context of innate and adaptive immunity. However, the role of host symbionts such as the microbiome are being examined potentially as part of an individual’s defense against disease. Chytridiomycosis, caused by the fungal pathogens Batrachochytrium dendrobatidis (Bd) and Batrachochytrium salamandrivorans (Bsal), is characterized by an infection of the skin often leading to osmotic imbalance and mortality, and has resulted in losses in global amphibian biodiversity. Understanding what may influence the development of resistance to or tolerance of infection is critical to developing prevention …

Non-Traditional Methods For The Green Synthesis Of Fine Chemicals, Tara Renée Mooney

Graduate Masters Theses

Herein, the advancement of microwave-assisted flow synthesis is reviewed and the green nitration of arenes is investigated. First, microwave-assisted flow systems are described, followed by their synthetic and environmental applications. Microwave-assisted flow synthesis has been applied successfully in organic, inorganic, material, and biochemical syntheses as well as environmental applications such as water desalination and the removal of volatile organic compounds from the atmosphere. In the second part of the Thesis, the methodological development of the first catalyst and solvent-free nitration of m-xylene using only nitric acid is detailed. This environmentally friendly reaction proceeds without the use of harsh Brønsted acids, …

Host-Pathogen Interactions In A Changing World: Microbes, Mucosal Defenses, And Multiple Hosts, Brandon C. Labumbard

Graduate Doctoral Dissertations

As fungal diseases continue to emerge, research increasingly focuses on host-microbiome interactions and links to disease. Certain skin-associated microbes may benefit hosts by protecting them from invading pathogens. Seasonal changes in the host environment can also result in shifts in the microbial community and pathogen virulence – potentially influencing disease dynamics. I investigated how cutaneous microbial communities differ across hosts, seasons, and Batrachochytrium dendrobatidis (Bd) infection status by sequencing the microbial communities of 1,100 leopard frogs at five locations across the US. Percent anti-Bd function varied seasonally and with Bd infection status. Bacterial communities also varied across locations and time. …

Opening The Halls Of Power: Implementing A Community Organizing Approach To Parent Engagement In New York City’S Community Schools, Andrew R. King

Graduate Doctoral Dissertations

Under former Mayor Bill de Blasio, New York City launched a Community Schools Initiative (NYC-CS) in 2014 that now includes more than 300 schools, making it the largest school improvement plan of its kind in the country. Bloomberg, the previous mayor, had championed market-based reform strategies by closing struggling public schools and replacing them with privately run charter schools. In contrast, the community schools model supports struggling schools by providing them with wraparound services to address not only the academic—but also the health, social, and emotional—needs of the “whole child.” Research has shown the NYC initiative has had positive impacts …

Neighborhood And Environmental Predictors Of At-Risk And Problem Gambling In Massachusetts, Kendra E. Pugh

Graduate Doctoral Dissertations

Despite the widespread impact and negative effects of problem gambling (PG), limited attention has been paid to the environment where PG occurs. This study investigated the relationship between gambling on lottery and the zip code where gambling occurs, as well as the influence of individual-level characteristics that predict at-risk or problem gambling (AR/PG), among Massachusetts residents. A GIS analysis was conducted to identify vulnerable areas based on neighborhood characteristics, lottery sales, and AR/PG. Overall, residents of disadvantaged areas did not spend more money on lottery or have more lottery agents than residents of less disadvantaged areas. Some indicators of disadvantage …

Perceived Covid-19 Threat, Perceived Healthcare System Inequities, Personal Experiences Of Healthcare Discrimination And Their Associations With Covid-19 Preventive Behavioral Intentions Among College Students In The Us, Juliana S. Sherchan, Jessica R. Fernandez, Shan Qiao, Arie W. Kruglanski, Allana T. Forde

Faculty Publications

College students are often reluctant to follow U.S. preventive guidelines to lower their risk of COVID-19 infection, despite an increased risk of transmission in college settings. Prior research suggested that college students who perceived greater COVID-19 severity and susceptibility (i.e., COVID-19 threat) were more likely to engage in COVID-19 preventive behaviors, yet there is limited research examining whether perceived COVID-19 threat, perceived U.S. healthcare system inequities, and personal experiences of healthcare discrimination collectively influence college students’ COVID-19 preventive behaviors. This study identified latent classes of perceived COVID-19 threat, perceived U.S. healthcare system inequities, and personal experiences of healthcare discrimination, examined …

Quantifying Life History Energetics Of An Oviparous Elasmobranch Subject To Future Warming Water, Carolyn R. Wheeler

Graduate Doctoral Dissertations

Marine ectothermic fishes – fishes that do not regulate internal body temperature independent from the water temperature – are some of the most vulnerable organisms to rapid and alarming increases in environmental temperature occurring due to climate change mediated-ocean warming. For tropical fish species that live near their thermal maxima, this warming could be of grave consequence to individuals, populations, and whole marine ecosystems. Certain key life stages such as embryos and reproducing adults may be particularly vulnerable to warming given the excess energetic costs of these life stages, which may disallow compensation for extreme changes in temperature. One taxonomic …

Effects Of Interest Rate Ceiling On Sustainability Of Microfinance Institutions: Lessons From Tanzania, Goodluck Charles

Business Management Review

This study explores the effects of an interest rate ceiling on the sustainability of Microfinance Institutions (MFIs). Based on qualitative research which entailed collection of online data from 53 respondents and in-depth face-to-face interviews with 10 MFI practitioners in Tanzania, it is evident that an interest rate ceiling interferes with competitive market forces. Given that MFIs vary in size, operational capacity, customer segment and business model, applying a single blanket interest rate leads to capital and credit diversion, hidden non-interest charges, the emergence of informal lenders and a black market, the withholding of credit from risky markets and the closure …

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 ' …

Comparative Analysis Of Liquidity And Capital Of Commercial Banks In Tanzania, Elizabeth Joseph

Business Management Review

This study compares the liquidity and capital of commercial banks in Tanzania. Specifically, the study examines the liquidity and capital adjustment of small, medium and large banks. The study used quarterly data of 28 commercial banks from 2010 to 2019 and applied descriptive and correlation analysis. Results revealed a negative correlation between adjustment in capital and liquid assets to customer deposits ratio. Furthermore, a significant correlation between capital adjustment and liquidity in small and large banks was also observed. The liquidity and capital adjustment between the current and previous periods do not significantly differ among small, medium, and large banks. …

A Comparison Of Techniques Of Boron Removal From Water And Wastewater, Abdolmajid Fadaei

Journal of Environmental Science and Sustainable Development

Boron is a vital trace element required by plants, humans, and animals. It is also a significant element used in several industries. Along with the widespread usage of boron, boron waste progressively contaminates the potable water sources as well as causing a chain of environmental and health challenges to occur. This study reviews the techniques used for boron removal from aqueous solutions, including ion exchange, resin adsorption, reverse osmosis (RO), electrocoagulation, microfiltration, chemical coagulation, solvent extraction, electro dialytic, and hybrid processes. A review search was carried out from the databases Scopus, PubMed, Web of Knowledge, and Embase using the following …

Information Sustainability Of Islamic Education Centers Through Website Digitization, Renny Nurhasana, Nurul Muhafilah, Nur Arning Tengara Kasih

Journal of Environmental Science and Sustainable Development

Islamic education of Taman Pendidikan Al-Quran (TPA) is an Al-Quran Learning Center that gives informal religious education to guide children to know Islamic values from an early age. TPA Ikhlasul Machfudz was established since 2006 that, in addition to Al-Quran, the center also teaches children with English, Marawis (voices with strong religious elements) and Qasidah (lyrics that are related to Islamic values). However, since the COVID-19 pandemic occurred in 2020, the learning process has stopped completely due to the policy of learning from home. There are many obstacles to teach from home using online learning method. Teachers realized the importance …

The Effects Of Country Of Origin And Social Media Opinion Leaders On Purchase Intention For Wuling Vehicles, Fandis Ekyawan, Ma’Ruf Fauzi Rahman

ASEAN Marketing Journal

Manuscript type: Research Article Research Aims: This research objective was to analyse the influence of country of origin, trust, price perception, perceived quality and social media opinion leader on Wuling purchase intention. Design/methodology/approach: This study was conducted quantitatively by distributing questionnaires to 234 respondents who are over 20 years old and know about Wuling and selected YouTube channels. Data was analysed using Structural Equation Modelling (SEM) method with the LISREL software application. Research Findings: The results of this study indicate that there is a positive significant impact relationship between country of origin (country-related products) and trust in the purchase intention …

Neuromarketing Study: The Effect Of Jingle On Consumer Behavior, Hilman Fauzi, Rafif Rizqullah, Maya Ariyanti, Ivy Anindhita Hadyningtyas

ASEAN Marketing Journal

Manuscript type: Research Article

Research Aims: This research investigates the impact of a jingle associated with a top-brand product on consumer behavior, as assessed through short-term memory activity in the brain.

Design/methodology/approach: Data were collected from six participants, three men and three women aged 19-24. The Contec KT88-1016 Digital 16-Channel EEG machine and the Mapping System device were used to retrieve the data. The channel selection was employed to identify the optimal channel based on L2-norm energy calculations performed on the EEG channels within the short-term memory area.

Research Findings: The frontal area exhibited higher energy levels than other …