Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (662504)
- Arts and Humanities (578120)
- Law (545814)
- Education (386748)
- Medicine and Health Sciences (328690)
-
- Physical Sciences and Mathematics (294740)
- Life Sciences (256002)
- Engineering (197989)
- History (183878)
- Business (150808)
- Higher Education (145536)
- Anthropology (116070)
- Religion (110365)
- Archaeological Anthropology (96481)
- Communication (89519)
- Sociology (87333)
- Library and Information Science (80668)
- Medical Specialties (78900)
- United States History (78677)
- Psychology (74122)
- Computer Sciences (63955)
- Public Affairs, Public Policy and Public Administration (63304)
- Earth Sciences (59556)
- Creative Writing (58122)
- Public Health (54831)
- Environmental Sciences (52777)
- English Language and Literature (47866)
- Economics (47591)
- Educational Administration and Supervision (46657)
- Medical Sciences (46116)
- Institution
-
- University of South Florida (163400)
- University of New Mexico (139725)
- University of Nebraska - Lincoln (114064)
- Kenyon College (112902)
- University of Montana (98560)
-
- University of Mississippi (95204)
- University of New Hampshire (79841)
- Brigham Young University (72322)
- Georgia Southern University (61716)
- Eastern Illinois University (58586)
- Utah State University (57332)
- Mississippi State University (54721)
- Western Michigan University (53086)
- University of Kentucky (52549)
- Murray State University (50654)
- Purdue University (50132)
- University of Colorado Law School (47507)
- Louisiana State University (45265)
- Brigham Young University Law School (44084)
- Western Kentucky University (43096)
- Villanova University Charles Widger School of Law (42894)
- California Polytechnic State University, San Luis Obispo (42580)
- University of Central Florida (42552)
- University of Dayton (41462)
- University of Alabama at Birmingham (38141)
- Chulalongkorn University (37844)
- San Jose State University (37195)
- University of Northern Iowa (36032)
- Yale University (33913)
- Missouri University of Science and Technology (33681)
- Keyword
-
- Newspaper (47941)
- Latin America (31541)
- Press release; media release; press statement; news media information (30839)
- Spanish (30834)
- Humans (30077)
-
- History (30061)
- University of New Mexico (29737)
- UNM (29639)
- LADB (29608)
- LAII (29608)
- Latin American and Iberian Institute (29608)
- Education (29099)
- United States (21532)
- Student newspaper (20280)
- Newsletter (19720)
- EIU (19634)
- Georgia Southern University (18971)
- Newspapers (18270)
- Deaf culture (17102)
- Hearing impaired (17092)
- Pastoral care of people with disabilities (17060)
- Church work with the deaf -- Catholic Church (17052)
- Deaf -- Periodicals (17043)
- Athletics (16878)
- Marriage (16190)
- Poetry (15551)
- Students (15197)
- Higher education (14684)
- Female (14617)
- COVID-19 (14484)
- Publication Year
-
- 2026 (118058)
- 2025 (159020)
- 2024 (194744)
- 2023 (164158)
- 2022 (169245)
-
- 2021 (196932)
- 2020 (170119)
- 2019 (166233)
- 2018 (170921)
- 2017 (161791)
- 2016 (160201)
- 2015 (146922)
- 2014 (136894)
- 2013 (131229)
- 2012 (125414)
- 2011 (108870)
- 2010 (104265)
- 2009 (96200)
- 2008 (93170)
- 2007 (79590)
- 2006 (75024)
- 2005 (70584)
- 2004 (71826)
- 2003 (59167)
- 2002 (64882)
- 2001 (55443)
- 2000 (58983)
- 1996 (62751)
- 1992 (53281)
- 1990 (53858)
- Publication
-
- Four Valleys Archive (90475)
- Theses and Dissertations (74540)
- Faculty Publications (45995)
- Electronic Theses and Dissertations (35668)
- University of Montana News Releases, 1928, 1956-present (30912)
-
- Faculty Scholarship (25554)
- Dissertations (23818)
- The Auk (22791)
- Documents (21937)
- Theses (21766)
- Browse All News (21496)
- Articles (19780)
- Walden Dissertations and Doctoral Studies (19777)
- Masters Theses (18671)
- Master's Theses (18447)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (15281)
- Session Laws 1951-2000 (15051)
- NotiSur (13785)
- Faculty, Staff and Student Publications (13701)
- Hillsborough County Marriage Records (13681)
- University of Mississippi News (13497)
- Obituaries (13320)
- The Murray Ledger & Times (13003)
- Sheet Music Collection (12976)
- Michigan Law Review (12811)
- Defensive Publications Series (12740)
- University of Montana Course Syllabi (12469)
- Honors Theses (12168)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (11969)
- Condor (11821)
- Publication Type
Articles 278341 - 278370 of 5207222
Full-Text Articles in Entire DC Network
“The People Deserve Better Governance”: Examining The Letters Of Filipino High School Students To The Next President Of The Philippines, Ma. Glenda Lopez Wui, Jessica Sandra R. Claudio, Rosselle Trishia M. Reyes, Carl Russel R. Reyes, Jie Zhang, Enrique Niño P. Leviste
“The People Deserve Better Governance”: Examining The Letters Of Filipino High School Students To The Next President Of The Philippines, Ma. Glenda Lopez Wui, Jessica Sandra R. Claudio, Rosselle Trishia M. Reyes, Carl Russel R. Reyes, Jie Zhang, Enrique Niño P. Leviste
Asia-Pacific Social Science Review
The study examined the results of the civic writing project “Letter to the Next President of the Philippines,” where grades 9-10 students were asked to write a letter to the next president about social problems that they wanted their future leader to resolve and why. The study analyzed the students’ letter topics according to their school type and location, gender, and the students’ sources of information for their civic writing. The letters (N=322) were written by students from urban and rural, and public and private schools across the country in March-May 2022 before the Philippine presidential election. The quantitative analysis …
Entrepreneurial Self-Efficacy And Extreme Decision-Making: The Unexpected Influence Of Entrepreneurial Personality, Chatchai Chatpunyakul, Sarist Gulthawatvichai
Entrepreneurial Self-Efficacy And Extreme Decision-Making: The Unexpected Influence Of Entrepreneurial Personality, Chatchai Chatpunyakul, Sarist Gulthawatvichai
Asia-Pacific Social Science Review
The two main goals of this paper are to (a) examine how entrepreneurial self-efficacy (ESE) affects decision- making among nascent entrepreneurs and (b) examine the moderating role of entrepreneurial personality. A 2x2 between- subjects online randomized experiment was carried out. A sample of 48 Bangkok-based business school students who functioned as the study’s nascent entrepreneurs’ representatives was used to collect data for two sessions. Multiple linear regression was used to assess the research hypotheses. The findings show that extreme decision-making and nascent entrepreneurs’ ESE are positively correlated; an increase in ESE causes an increase in extreme decision-making. The effect of …
Development And Validation Of The Malaysia Cybervictimization Scale For Adolescents In Malay And Chinese Version, Poh Chua Siah, Xiang Yi Tee, Chee-Seng Tan, Joanna Tjin Ai Tan, Komathi Lokithasan, Sew Kim Low, Chin Choo Yap
Development And Validation Of The Malaysia Cybervictimization Scale For Adolescents In Malay And Chinese Version, Poh Chua Siah, Xiang Yi Tee, Chee-Seng Tan, Joanna Tjin Ai Tan, Komathi Lokithasan, Sew Kim Low, Chin Choo Yap
Asia-Pacific Social Science Review
The increasing rate of cybervictimization has been documented in various countries, including Malaysia. However, there is a dearth of measurement tools with sound psychometric properties suitable for the Malaysian context. To address this methodological gap, the Malaysia Cybervictimization Scale for Adolescents (MyCVS-A) was developed based on qualitative inputs from adolescents in Malaysia. It was subsequently translated into Malay (MyCVS-A-M) and Chinese (MyCVS-A-C). Two studies were conducted to examine the psychometric properties of these two translated versions. In Study 1, 281 secondary school students completed the MyCVS-A-M, the Malay version of the cybervictimization subscale of the European Cyberbullying Intervention Project Questionnaire …
High-Frequency Gold Price Forecasting: Optimizing Multi-Layer Perceptron With Genetic Algorithm, Vrtagic Sabahudin, Fatih Dogan
High-Frequency Gold Price Forecasting: Optimizing Multi-Layer Perceptron With Genetic Algorithm, Vrtagic Sabahudin, Fatih Dogan
Materials Science and Engineering Faculty Research & Creative Works
Accurately forecasting gold price actions is critical in financial markets due to gold's role as a safe-haven asset. This paper addresses the challenge of forecasting gold prices by applying a Genetic Algorithm (GA) with a Multi-Layer Perceptron (MLP) model. The research exploits historical financial data from various instruments, including gold futures, Bitcoin, and key currency pairs, to improve prediction accuracy. By optimizing the MLP's hyper parameters through GA, the model efficiently captures complex relationships in high-frequency data, achieving a remarkable R² score of 0.9993. This level of precision demonstrates the model's potential for providing actionable insights for traders and investors. …
Roselle And Red Ginger: A Potential Combination Of Medicinal Plants For Hypertension Therapy, Ranum Wanudya Yunas, Siti Irma Rahmawati, Fadlina Chany Saputri, Asep Bayu, Giuseppina Chianese, Masteria Yunovilsa Putra
Roselle And Red Ginger: A Potential Combination Of Medicinal Plants For Hypertension Therapy, Ranum Wanudya Yunas, Siti Irma Rahmawati, Fadlina Chany Saputri, Asep Bayu, Giuseppina Chianese, Masteria Yunovilsa Putra
Pharmaceutical Sciences and Research
Hypertension is a prevalent cardiovascular condition that significantly increases the risk of heart disease and stroke. Effective management is essential to prevent severe complications. Roselle (Hibiscus sabdariffa L.) and red ginger (Zingiber officinale var. rubrum) are two medicinal plants known for their antihypertensive properties. Roselle contains bioactive compounds such as anthocyanins that exhibit vasodilatory and angiotensin-converting enzyme (ACE) inhibition, while red ginger is rich in gingerols and shogaols, which possess anti-inflammatory and vasodilatory properties. The complementary mechanisms of action of these two plants, including ACE inhibition, antioxidant activity, and modulation of vascular tone, result in a more …
Investigating The Bioactivity Potential And Standardization Of Two Stingless Bee Propolis From East Kalimantan, Paula Mariana Kustiawan, Muhammad Ali Syahbana, Rika Pratika, Muhammad Nor Ichsan, Ika Ayu Mentari, Indah Hairunnisa, Irfan Muris Setiawan, Putri Hawa Syaifie, Donny Ramadhan, Chanpen Chanchao
Investigating The Bioactivity Potential And Standardization Of Two Stingless Bee Propolis From East Kalimantan, Paula Mariana Kustiawan, Muhammad Ali Syahbana, Rika Pratika, Muhammad Nor Ichsan, Ika Ayu Mentari, Indah Hairunnisa, Irfan Muris Setiawan, Putri Hawa Syaifie, Donny Ramadhan, Chanpen Chanchao
Pharmaceutical Sciences and Research
The standardization of raw materials from nature is essential before they are made into products. Until now, there is still limited information regarding the standardization of propolis from stingless bees. This research aims to determine the bioactivity with standardized specific and non-specific parameters of ethanol extracts from Homotrigona apicalis and Homotrigona fimbriata propolis. The methods include organoleptic tests, tests for water-soluble and ethanol-soluble compound content, drying shrinkage tests, specific gravity tests, water content tests, metal contamination tests, phytochemical screening, and determining total phenolic and flavonoid content. The free radical scavenging capacity was measured using the DPPH (1,1-diphenyl-2-picrylhydrazyl) method, and antimicrobial …
Optimization Of External Disintegrating Materials In Wet Granulation Formulation Of Ondansetron Tablets, Yandi Permana, Syahrul Tuba, Taufik Riyadi, Sugindro Sugindro
Optimization Of External Disintegrating Materials In Wet Granulation Formulation Of Ondansetron Tablets, Yandi Permana, Syahrul Tuba, Taufik Riyadi, Sugindro Sugindro
Pharmaceutical Sciences and Research
Inadequate management of chemotherapy-induced side effects, including nausea and vomiting, can impact the healing response of cancer patients. Ondansetron, a preferred medication for the treatment, is classified as a biopharmaceutic classification system (BCS) class II drug, which limits its bioavailability. To enhance its solubility, sodium starch glycolate (SSG) and pregelatinized starch (PG) are used as super disintegrants. This study investigates the impact of these super disintegrants on ondansetron dissolution and identifies the optimal formulation. Ondansetron tablets were prepared using the wet granulation method, with nine formulations varying in SSG and PG concentrations (0%, 1%, 3%, 5%, and 7%). The tablets …
Utilizing Water Hyacinth (Eichhornia Crassipes) From Srandakan Bantul, Indonesia For ‘Bright Fever Patch’ As An Alternative Children’S Fever Therapy, Anggita Kamalia Niswara, Nabillah Ainun Kusrinanti, Rizqi Amalia Firdaus, Azis Ikhsanudin
Utilizing Water Hyacinth (Eichhornia Crassipes) From Srandakan Bantul, Indonesia For ‘Bright Fever Patch’ As An Alternative Children’S Fever Therapy, Anggita Kamalia Niswara, Nabillah Ainun Kusrinanti, Rizqi Amalia Firdaus, Azis Ikhsanudin
Pharmaceutical Sciences and Research
In 2022, Indonesia experienced a public health crisis involving acute kidney failure in children, traced to paracetamol syrup contaminated with ethylene glycol and diethylene glycol. This underscores the urgent need for safer antipyretic alternatives. This study investigates the antipyretic potential of transdermal patches formulated with ethanol extract of water hyacinth (Eichhornia crassipes) leaves sourced from Srandakan, Bantul, Yogyakarta. Extract concentrations of 0.8%, 1.0%, and 1.2% were tested, alongside a negative control (no extract) and a positive control (paracetamol). The patches underwent evaluations for organoleptic properties, weight uniformity (0.41±0.02 to 0.52±0.02 g), thickness (0.36±0.03 to 0.41±0.03 mm), water absorption …
Becoming Connective: Strengthening Diversity In Nursing Education, Melanie Jacobs
Becoming Connective: Strengthening Diversity In Nursing Education, Melanie Jacobs
Electronic Theses and Dissertations Archive
Abstract Diversity in the nursing profession does not match the demographic of patients in the United States and correcting this mismatch could positively impact health disparities in the country. This post-intentional phenomenological study examines the current relationship between nursing education, as the pipeline into the profession, and students from underrepresented racial and ethnic (URRE) groups in the nursing profession to offer movement into the development of a stronger connection. In this qualitative study, phenomenological and poststructural tenets were used to seek the phenomenon of becoming connective, the creative tendency toward connection between URRE and nursing education. Data were generated from …
Rdn Diagnosed Malnutrition At St. Jude Children’S Research Hospital: Onset To Resolution Using And/Aspen Criteria, Madison Domek
Rdn Diagnosed Malnutrition At St. Jude Children’S Research Hospital: Onset To Resolution Using And/Aspen Criteria, Madison Domek
Electronic Theses and Dissertations Archive
This quality improvement (QI) project investigates the incidence and management of malnutrition in pediatric oncology patients at St. Jude Children’s Research Hospital (SJCRH) from October 2022 to September 2023. The study aims to quantify malnutrition diagnoses made by registered dietitian nutritionists (RDNs) and to identify patients at higher risk of severe malnutrition based on their primary cancer diagnosis and clinic location. A total of 161 patients were identified, resulting in 238 documented instances of malnutrition, classified as mild, moderate, or severe. The majority of unresolved cases were attributed to inadequate follow-up, particularly in the Hematology Clinic, which had a 100% …
Front Matter
The Writing Center Journal
Front matter for The Writing Center Journal 42:3 (2024).
Tourism Carrying Capacity At Petungkriyono Forest And Its Supporting Areas, Nurwidya Ambarwati
Tourism Carrying Capacity At Petungkriyono Forest And Its Supporting Areas, Nurwidya Ambarwati
Journal of Environmental Science and Sustainable Development
Supported by a variety of diversity and landscapes, the development of tourism in the Petungkriyono area is growing rapidly. Optimizing ecotourism services in the Petungkriyono forest without disrupting the ecosystem and damaging the environment can be done by limiting the number of visitors at tourism sites. This study aims to find out information about the tourism capacity of some tourist attractions in the local forest. This study uses the Cifuentes model to predict the maximum number of visitor capacities that can be accommodated in a tourist attraction called Physical Carrying Capacity (PCC), Real Carrying Capacity (RCC), and Effective Carrying Capacity …
Forecasting Air Pollution Driven By Vehicle Growth, Public Transport, Industry, And Household Waste, Chandra Harjono, Ludy Gianto, Rachmattullah Sidik, Dyah Lestari Widaningrum
Forecasting Air Pollution Driven By Vehicle Growth, Public Transport, Industry, And Household Waste, Chandra Harjono, Ludy Gianto, Rachmattullah Sidik, Dyah Lestari Widaningrum
Journal of Environmental Science and Sustainable Development
Jakarta, Indonesia's bustling capital, is grappling with escalating air pollution levels attributed to a confluence of socio-economic and infrastructural factors. This study employs Vensim modelling to project PM2.5 pollution trends through 2040, analysing the dynamic interplay among major contributors: increased vehicular emissions, industrial activities, public transportation deficiencies, and waste management inefficiencies. Materials and Methods: The method that will be used in this air pollution analysis is to integrate empirical data spanning three years to construct a predictive model underpinned by a robust causal loop diagram that elucidates the relationships between system variables and air quality. The results of this paper …
Black Artists In America: From Civil Rights To The Bicentennial, Mallory Sharp
Black Artists In America: From Civil Rights To The Bicentennial, Mallory Sharp
Art Inquiries
No abstract provided.
Corsets Off. Camille Claudel And Polish Women Sculptors Of The 19th Century, Beata Niedzialkowska
Corsets Off. Camille Claudel And Polish Women Sculptors Of The 19th Century, Beata Niedzialkowska
Art Inquiries
No abstract provided.
Conservation Through Art: Saving Alabama Hemlocks, Kelly A. Wacker
Conservation Through Art: Saving Alabama Hemlocks, Kelly A. Wacker
Art Inquiries
No abstract provided.
Implementing A Patient Reported Experience Measure To A Home-Based Intermediate Care Service In Cornwall, Bethan Allen
Implementing A Patient Reported Experience Measure To A Home-Based Intermediate Care Service In Cornwall, Bethan Allen
South West Clinical School Journal
#400WORDS: CHIEF NURSING OFFICER’S RESEARCH FELLOWS EVIDENCE IMPLEMENTATION PROJECTS
Digital Inclusion - Establishing And Understanding The Problem In A Digital First Musculoskeletal Physiotherapy Service: A Practice Improvement Project, Andrew Deare
South West Clinical School Journal
#400WORDS: CHIEF NURSING OFFICER’S RESEARCH FELLOWS EVIDENCE IMPLEMENTATION PROJECTS
Professional Identities, Culture And Pillars, Ralph Hammond
Professional Identities, Culture And Pillars, Ralph Hammond
South West Clinical School Journal
No abstract provided.
Evaluating The Impact Of Staff Attitudes And Behaviours On Hospital-Associated Deconditioning, Cheryl Kent
Evaluating The Impact Of Staff Attitudes And Behaviours On Hospital-Associated Deconditioning, Cheryl Kent
South West Clinical School Journal
#400WORDS: CHIEF NURSING OFFICER’S RESEARCH FELLOWS EVIDENCE IMPLEMENTATION PROJECTS
Effect Of Alternative Rearing Substrates On The Growth, Reproduction And Nutritional Composition Of The African Field Cricket Gyrllus Bimaculatus (Orthoptera: Gryllidae), Atujune Katabaro, Blanka Joseph, Anitha Philbert
Effect Of Alternative Rearing Substrates On The Growth, Reproduction And Nutritional Composition Of The African Field Cricket Gyrllus Bimaculatus (Orthoptera: Gryllidae), Atujune Katabaro, Blanka Joseph, Anitha Philbert
Tanzania Journal of Science
The increasing demand for animal protein to cater to the ever-growing human population has prompted the quest for alternative protein sources from insects. The field cricket Gyrllus bimaculatus, is one of the species of major interest, however, rearing of this species depends on the commercial chicken feed, which is expensive. This study explored the suitability of food remains in the rearing of this species. Three experimental food types were formulated from various food remains, and fed to crickets along with the commercial chicken feed for 14 weeks. Crickets that were fed on a combined diet of mixed food types performed …
Finite Element Models For Predicting Moisture Effects On Bolt Embedment And Connection In Timber, Henry Meleki Kiwelu
Finite Element Models For Predicting Moisture Effects On Bolt Embedment And Connection In Timber, Henry Meleki Kiwelu
Tanzania Journal of Science
The mechanical performances of timber connections are particularly important for timber engineers involved in the design of the wood structures. The mechanism of connection must be well understood in order to design a safer connection and avoid catastrophic failure. Often connections are made weak fuse elements by deliberate intent to ensure that if structural systems fail it will be by controllable ductile deformation of connections in load paths. Model method of determining engineering design capacities of laterally loaded dowel fasteners, such as bolts, screws and nails was developed. It should however be pointed out that FE and similar continuum model …
A Comparative Study Of Unfolding Techniques For Gamma-Ray Spectra Obtained With Nai(Tl) Scintillation Detectors, Mwingereza J Kumwenda
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
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
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
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
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
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
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
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 …