Digital Commons Network^™

Multi-Objective Optimization Of Waste Incineration For Minimal Carbon Monoxide And Sulfur Dioxide Emission And Rate Maximization: A Case Study Of Mbezi, Mkuranga-Pwani, Tanzania, Grangay M. Nyanghura, Enock W. Nshama

Tanzania Journal of Science

Incineration is widely employed for hazardous waste disposal, but results in harmful flue gas emissions. This study optimizes a double-chamber incineration process to reduce sulfur dioxide (SO2) and carbon monoxide (CO) emissions while maximizing the incineration rate. The effects of waste mass, primary chamber temperature (PT), and secondary chamber temperature (ST) were analyzed using a full factorial design of 27 experiments. ANOVA revealed that mass had the greatest impact on emissions and incineration time, ST had a moderate effect, and PT had little influence. Regression analysis provided models for incineration time, CO, and SO2 emissions. Single-objective optimization using sequential quadratic …

Comparative Study Of Cement-Rice Husk Ash Stabilized Bricks And Fired Clay Bricks, Daniel R. Samson, Emmanuel S. Leo

Tanzania Journal of Science

In some countries, fired clay bricks (FCBs) are widely used for construction, but their production is energy-intensive, relies largely on firewood, and contributes to deforestation and carbon emissions. This study explores unfired clay bricks stabilised with cement and rice husk ash (RHA) as a sustainable alternative, using Dakawa ward in the Morogoro Region, Tanzania, as a case study. The bricks, with a clay of plasticity index 17%, were stabilized with 6%, 10%, and 14% cement by mass, moulded into 40 mm cubes, and cured for 28 days. The compressive strengths achieved were 1.5, 3.6, and 4.1 MPa with water absorption …

Honey Bees (Apis Mellifera) Pollination Enhances Watermelon (Citrullus Lanatus) Yield In Kibaha Tanzania, Beatrice Tonola, Charles Olambo Joseph, Mkabwa L.K. Manoko, Shibonage K. Mashilingi

Tanzania Journal of Science

Honey bees are essential pollinators of the world’s food crops. However, information on the influence of honey bee pollination on watermelon yield is limited in Tanzania. This study assessed efficiency of honey bee pollination on watermelon yield. The study tested three improved watermelon varieties (Zebra F1, Candy F1 and Sukari F1) and three pollination environments: (Caged with Apis mellifera (CAM), Caged without insects (CW) and Open pollination (OP) in two seasons. The experiment was arranged in a split-plot design in randomized complete block design (RCBD) with three replications. Results showed no significant interaction between pollination environment and varieties. Significant difference …

Effects Of Substrate–Supplement Interactions On Yield Performance Of Oyster Mushroom (Pleurotus Ostreatus), Charles O. Joseph, Faraja Makwinja

Tanzania Journal of Science

Different substrates and supplements are used in mushroom production, however their interaction effects and growth variables affected is little known. This study was conducted to compare the effects of substrate-supplement interactions on growth and yield of oyster mushrooms Pleurotus ostreatus. Two substrates (banana leaves and sawdust) and two supplements (chicken manure and sugar) were investigated. The substrates were reduced to 2 cm pieces and steam sterilized at 80–100°C for 3 hours. In each bag containing specific substrate, the supplements were added as 2% of the total substrate. The spawn was inoculated from each bag; misting was applied to maintain constant …

Heavy Metal Contamination In Agricultural Soils And Potential Human Health Risks, Debora Michael Mwenda, Leonard Masesa Jumanne, Daudi Salvius Mgaya, Amos Vincent Ntarisa

Tanzania Journal of Science

Heavy metal contamination in agricultural soils is a growing concern due to potential human health risks via ingestion, dermal contact, and inhalation. However, data on fertiliser-related contamination in rural Tanzanian settings remain limited. This study assessed contamination levels and associated health risks in Kibwabwa village, Iringa, Tanzania. A total of 48 soil samples were collected from eight farms at a depth of 0–15 cm. Concentrations of Cu, Zn, Ni, Cd, Cr, and Pb were determined using Atomic Absorption Spectroscopy (AAS). Health risks were evaluated using chronic daily intake (CDI), hazard quotient (HQ), hazard index (HI), and carcinogenic risk (CR) models …

Promoting Student Engagement In Science Education: A Review Of Research-Based Approaches, Yoshihiko Ariizumi

Spiritual Proficiency

Student engagement remains a central concern in science education. Across decades of research, educational scholars have proposed various frameworks to enhance learners’ interest, motivation, and deep understanding. This paper reviews major contributions from ten influential researchers and synthesizes key principles for designing engaging science learning environments. The analysis shows that effective science education emphasizes active participation, inquiry, cognitive challenge, social interaction, and meaningful application. These findings support a broader view of learning as a transformative process rather than mere knowledge acquisition.

The Synthesis Of Truth: Integrating Research-Based Science Education With The Restored Gospel At Brigham Young University, Yoshihiko Ariizumi

Spiritual Proficiency

Modern science education identifies six core principles for student engagement: active participation, inquiry, cognitive challenge, social interaction, meaningful context, and balanced guidance. While these principles are validated by secular research (e.g., Piaget, Vygotsky, Kolb), their implementation at Brigham Young University (BYU) takes on a unique dimension through the lens of the Restored Gospel of Jesus Christ. This paper argues that effective science education at BYU is not merely a pedagogical strategy but a spiritual imperative. By synthesizing scientific inquiry with divine revelation, learners transition from passive recipients of information to active agents of discovery, fulfilling the prophetic mandate to "seek …

Antibacterial Activity Of Sapium Ellipticum, Securidaca Longepedunculata, And Allophylus Africanus Against Drug-Resistant Pseudomonas Aeruginosa Isolates, Eleonora A. Mbare, Rose J. Masalu, Cyprian B. Mpinda

Tanzania Journal of Science

Pseudomonas aeruginosa poses a major clinical challenge due to its high levels of antibiotic resistance. This study evaluated the antibacterial activity of three medicinal plant extracts Allophylus africanus (leaves), Securidaca longepedunculata (root bark), and Sapium ellipticum (stem bark), against 30 drug-resistant P. aeruginosa isolates. Antibacterial screening was conducted using the agar well diffusion method, followed by determination of minimum inhibitory concentrations (MICs) via a 96-well microtiter plate assay. All three plant extracts demonstrated inhibitory activity against three resistant P. aeruginosa strains (gentamicin-resistant strains F4 and GR4RAU-AI, and ceftazidime-resistant strain 19-10), with inhibition zones of varying diameters. MIC values showed strain-specific …

“Makes Me Wanna Holler”: Psychological Safety In Program Development Under Anti-Dei Legislation, Derrick B. Johnson

USF Tampa Graduate Theses and Dissertations

This evocative autoethnographic study explores the professional and emotional experiences of a Black male higher education administrator who developed a college success program for Black male students at a mostly White institution in Northeast Florida. The research took place as new state laws against diversity, equity, and inclusion (DEI) were introduced, showing how these changes disrupt DEI efforts. By using narrative inquiry, the study emphasizes how laws, campus culture, and racial expectations directly affect the emotional intelligence and professional identity needed to support Black male student success.

By focusing on the author's personal experiences, this evocative autoethnography shows the emotional, …

Re: Comment Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft 2022 Stormwater Evaluation And Maintenance Report (Dated February 27, 2026), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Comment Letter For The Butte Priority Soils Operable Unit (Bpsou) Draft 2024 Stormwater Evaluation And Maintenance Report (Dated February 27, 2026), Emma Rott

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Performance Forum - March 20, 2026, Mia Cotton, Sheng Yuan Kuan, Virgilio Vazquez, Dj Combs, Ay Kawasaki, Yilian Concepcion, Jon Cruz, Aidan Quintana

Performance Forum

No abstract provided.

Learning As Becoming: A Restored Gospel-Based Reinterpretation Of Scientific Discovery And Human Growth, Yoshihiko Ariizumi

Spiritual Proficiency

For many educators of the Church of Jesus Christ of the Latter-day Saints, a persistent dissonance exists between the secular textbooks we utilize and the restored truths we cherish. Traditional science often presents the universe as a closed, material system where learning is merely the acquisition of data. However, as we align our academic pursuits with the light of the Restored Gospel, we discover that scientific inquiry is not independent of spiritual growth. Rather, it is a primary mechanism through which we experience a fundamental shift in our very nature—moving from "knowing" to "becoming."

Microstructural Evolution And Precipitate Control In Boron-Doped Ni-Mn-Ti Shape Memory Alloys Via Thermal Processing, Na Liu, Marcia Ahn, Subrata Ghosh, Dipika Mandal, Bed Poudel, Wenjie Li

Biochemistry, Chemistry & Physics: Faculty Publications

Elastocaloric cooling, which leverages stress-induced phase transformation in shape memory materials, represents a sustainable and energy-efficient alternative to conventional vapor-compression cooling systems. Central to optimizing these materials is understanding how thermal processing history dictates phase formation, microstructure, and thermal properties. In this study, we investigated the (Ni50Mn31.5Ti18)99.8B0.2 compound synthesized via vacuum induction melting and arc melting, followed by water quenching. Induction melting results in needle-like, boron-rich precipitates within the martensite lattice. In contrast, vacuum arc melting promoted precipitate growth at the grain boundaries. The vacuum arc melting sample exhibits ~82% martensite phase fraction, a near-ambient transformation temperature of ~277 K, …

I Think You Overuse That Word: A Theoretical Examination From Multiple Lenses Of "Why Relational Beings Have Become Hesitant To Commit.", Rafe Karen

Graduate School of Professional Psychology: Doctoral Papers and Masters Projects

This paper serves as a companion to a documentary film that explores the shifting landscape of modern relationships. The film presents personal narratives about dating, connection, and commitment, and the paper offers an experiential exploration of these themes, focusing on dating dynamics, social media, online dating, lack of connection, Coronavirus 2019 (Covid-19), video games, and the effects of overwhelming choice. Drawing from existing literature and insights gained during the filmmaking process, the paper analyzes broader societal and psychological patterns shaping modern relationships. Using a combination of filmed interviews and direct observation, the study examines the lived experiences of individuals navigating …

Limited English Proficiency, Acculturative Stress, And Quality Of Life Among Korean American Patients With Chronic Hepatitis B, Hee-Soon Juon, Gilbert C. Gee, Julia G. Katcher, Daniel Yang, Katherine Smith, Ann C. Klassen

Department of Medical Oncology Faculty Papers

BACKGROUND: Chronic hepatitis B (CHB) is one of the most widespread liver diseases in the world and disproportionately affects Asian Americans, who are further impacted by the lower quality of life imposed by the infection. Limited English proficiency (LEP) and acculturative stress play an important role in the study of patients with CHB, but the interrelationships of LEP, acculturative stress, and health outcomes are not well studied in this population. This study aims to explore how acculturative stress mediates the relationship between LEP and health outcomes among Korean American patients with CHB.

METHODS: A total of 365 CHB patients completed …

Converting The Social Security Trust Fund Into A Sovereign Wealth Fund: A Proposal To Secure The Future, Keanu Moore

Dartmouth College Master’s Theses

This thesis proposes the conversion of the Social Security Trust Fund into a sovereign wealth fund (SWF), paired with the phased creation of a mandatory retirement savings system for all working-age Americans. In response to forecasts projecting Trust Fund depletion by 2034, the proposed portfolio shift would diversify assets beyond U.S. Treasuries into global equities, real estate, alternatives, and fixed income, with the goal of enhancing long-term returns while remaining passively managed. While this reform would extend the Fund’s solvency, it is not, on its own, a permanent fix. To ensure structural sustainability beyond the exhaustion date, the thesis proposes …

Gray V Diamond Property Management

All Decisions

In this HP proceeding, a tenant, a co-op shareholder, sought an order compelling the landlord (managing agent) to correct Housing Maintenance Code violations for lack of electricity and water leaks. The landlord moved to dismiss, arguing the proprietary lease assigned repair responsibility for interior conditions to the tenant. The court denied the landlord's motion, holding that cooperative corporations and their agents have a non-delegable statutory duty to correct health and safety violations, irrespective of the proprietary lease. The court also found the landlord failed to conclusively prove the violations did not originate from outside the unit, and ordered the landlord …

Comparative Analysis Of Chatgpt Responses Of Ivf-Related Questions And Asrm/Acog Answers, Morgan Wiley, Kristina Hrvojevic, Arlene Go

Advocate GME

Background: The use of artificial intelligence (AI) tools such as ChatGPT has rapidly expanded in healthcare, with many patients now utilizing these platforms to access medical information. Patients undergoing In vitro fertilization (IVF) often have multiple questions regarding treatment protocols, risks, and outcomes. While AI may enhance access, inaccurate or partial responses threaten patient care and proper counseling from healthcare providers. The American Society for Reproductive Medicine (ASRM) publishes detailed guidelines and committee opinions on nearly every aspect of assisted reproductive technology. Similarly, American College of Obstetrics and Gynecologists (ACOG) provides guidance for clinical practice and patient education in reproductive …

Science And Technology Communication And Construction Of China’S International Discourse System: Strategic Significance, Current Challenges, And Innovative Pathways, Haonan Du, Ting Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Against the backdrop of a new round of scientific and technological revolution with the ongoing restructuring of the global governance system, science and technology have become central to competition in national comprehensive competitiveness and struggles for international discourse power. China’s science and technology have achieved a historic leap from “catching up” to “running alongside” and even “leading in certain areas”, providing solid strength support for the construction of an international discourse system. However, the transformation of scientific and technological advantages into discourse advantages remains insufficient, and the international community holds a dual perception of China’s technological advancements—recognition alongside concerns. The …

Innovation-Oriented Science Popularization (Iosp): A New Paradigm For Frontier Science Communication And Innovation Capacity Building, Yong Ge, Yifei Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

Under China’s strategy of becoming a science and technology powerhouse, traditional transmission-oriented science popularization inadequately addresses youth demands for frontier technology practice, constraining source innovation in talent cultivation. Informed by international approaches such as learning by doing and responsible research and innovation (RRI), together with domestic Chinese practices, this study formulates innovation-oriented science popularization (IOSP) as a new paradigm focusing on frontier technologies, deep experiential learning, and innovation capacity building. IOSP establishes a systematic implementation pathway through four integrated dimensions: layered content design, virtual-real fusion, industry-academia-research-user linkage, and multi-scenario coverage. Taking the Shanghai Youth Science Innovation Practice Workstation as a …

Combatting Desertification Scientifically: Where Feasible, Where Necessary, Bojie Fu, Yanxu Liu, Shuai Wang, Yijia Wang, Guipeng Cui, Yue Guo

Bulletin of Chinese Academy of Sciences (Chinese Version)

China has made remarkable achievements in combating desertification, achieving “zero net growth” in land degradation. With the goal of scientifically improving the relationship between humans and nature in drylands, the continuous exploration of new concepts, methods, and pathways for scientific desertification control will contribute to advancing the harmony between humans and nature in China’s drylands. Based on the definitions of desertification, ecological restoration baselines, and the contributions of nature to humans, we clarified the scientific implications of “controlling desertification where it is feasible and necessary”. We discussed the shift in China’s desertification prevention and control direction from “humans advancing while …

Construction Of Emerging Contaminants Risk Governance System, Cheng Li, Mingcheng Wang, Chunlei Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

Emerging contaminants pose considerable risks to the ecological environment, human health, and social safety. The establishment of an emerging contaminants risk governance system constitutes a crucial component of the national ecological security strategy and the ecological civilization framework in the new era. When examined through the lens of the holistic view of national security and guided by the ecological civilization philosophy of the new era, China’s current efforts in managing emerging contaminants reveal several shortcomings—including a fragmented and incomplete risk management system, as well as preliminary stages in chemical environmental management policies and related technologies. Therefore, grounded in national conditions …

Conduction Paths And Policy Design Of New Quality Productivity Empowering Urban-Rural Integrated Development, Lulu Yang, Yi Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The Fifth Plenary Session of the 20th Central Committee of the Communist Party of China emphasized that during the “15th Five-Year Plan” period, resolving the issues relating to agriculture, rural areas, and rural people must remain a top priority for the entire party, and efforts should be made to promote integrated urban-rural development. As an inevitable path to addressing the relative lag in agricultural and rural modernization, urban-rural integration has entered a new phase, transitioning from establishing institutional mechanisms to developing integrated factor allocation. This phase urgently requires new theoretical guidance and breakthroughs in dynamic models. This study constructs an …

Comparative Study On Ai Talent Cultivation In China And The United States: Strategies And Recommendations, Lexuan Li, Ke Wen, Wenjie Liu, Wei Shen, Zhenguo Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

Artificial intelligence (AI), as the core driving force of the new industrial revolution, has become a strategic pillar for enhancing national competitiveness, with the cultivation of AI talent being a decisive factor. This study systematically compares the AI talent cultivation systems of China and the United States from three perspectives: strategic planning, formal education, and practical domains. The findings reveal that the U.S. has continuously and systematically advanced AI talent cultivation plans at the national level, granted institutions substantial autonomy in talent cultivation with deep integration of industry-academia-research collaboration, and established a well-developed AI innovation and entrepreneurship environment. Accordingly, the …

Research And Reflections On Model Of China’S Ai Open-Source Innovation Ecosystem, Yuntao Long, Haibo Liu, Qigang Zhu, Xudong Ren, Yanjun Wu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Open-source innovation, leveraging its strengths in collective collaboration and agile development, is increasingly becoming a core driver reshaping innovation paradigms and industrial ecosystems in the global artificial intelligence field. As a significant force in global technological development, China is actively promoting technology enterprises, research institutes, universities, and other diverse entities to deeply integrate into the construction of the global AI open-source innovation system through policy guidance, community building, and breakthroughs in large models. Based on the practical experience of building China’s AI open-source innovation ecosystem, this study systematically examines the current development status and challenges. By analyzing the operational models …

Transformation Of Open-Source Innovation Governance Of Large Models, Zhe Wang, Jinsong Cai

Bulletin of Chinese Academy of Sciences (Chinese Version)

Artificial general intelligence (AGI), represented by large-scale models, is a transformative driver of new-quality productive forces, making the effective construction and governance of open-source innovation commons increasingly critical. Yet traditional open-source models are under strain, and existing commons theories require further development. Model training costs rise exponentially with each iteration, while a sustainable profit cycle from innovation to industrial application has not been established, rendering long-term cost-bearing infeasible for individual organizations. The traditional community-enterprise collaboration model, once successful in generating ecosystem value, now faces escalating computing and data costs, uncertain commercial returns, and governance risks related to social and national …

Research On Signal Perception System Of Key Technology Regulation In The United States, Kaile Wang, Hao Liu, Yunwei Chen

Bulletin of Chinese Academy of Sciences (Chinese Version)

The purpose of the study is to analyze the operation mechanism of the key technology control signal perception system, and reveal the deep logic and basic procedures of the United States’ external technical containment. Through literature review and information mining, this study analyzes the structural features of the U.S. key technology control signal perception system, such as “front-end technical perception and technology locking”, “mid-end technical evaluation and risk identification”, and “back-end technical control response and dynamic sanctions”. It further explores the participating subjects and role positioning of the United States in key technology control signal perception, the sources and mechanisms …

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Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.

Cover 1

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.