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An Automatic Grading Method For Apples Based On Improved Cnn-Svm And Machine Vision, Zhang Ruiqi, Yang Ning, Zhang Yifeng Oct 2025

An Automatic Grading Method For Apples Based On Improved Cnn-Svm And Machine Vision, Zhang Ruiqi, Yang Ning, Zhang Yifeng

Food and Machinery

[Objective] To solve the problems such as poor grading accuracy and low efficiency existing in the current automatic grading methods for apples. [Methods] On the basis of the automatic grading system for apples based on machine vision, an automatic grading method combining convolutional neural network, global average pooling, batch normalization, and support vector machine is proposed for apples. Through global average pooling, the number of model parameters is reduced. The generalization ability of the model is improved by batch normalization. The Softmax classifier of the convolutional neural network is replaced by a support vector machine to improve the grading accuracy. …

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Food Automated Sorting System Integrated With Improved Yolov 11 And Dynamic Sorting Strategy, Ren Yuemei, Li Lei, Zhang Junfeng, Shang Zhanlei Oct 2025

Food Automated Sorting System Integrated With Improved Yolov 11 And Dynamic Sorting Strategy, Ren Yuemei, Li Lei, Zhang Junfeng, Shang Zhanlei

Food and Machinery

[Objective] To address the high missed detection rate and low sorting efficiency of existing food sorting system. [Methods] For an automated food sorting system based on visual inspection, a method integrating an improved YOLOv 11 model and a dynamic sorting strategy was proposed. The improved YOLOv 11 object detection model enhances the ability to identify and locate food defects. Combined with the dynamic sorting strategy, the system achieves dynamic target sorting by the robot. The improved model introduces a lightweight cross-scale feature fusion module, which enhances network efficiency by simplifying the structure and strengthening information exchange. The C 3k2 module …

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A Robotic Arm Food Sorting System Based On Improved Yolox And Admittance Control, Shi Lichun, Liu Songtao, Wang Songwei, Wang Zhizhong Oct 2025

A Robotic Arm Food Sorting System Based On Improved Yolox And Admittance Control, Shi Lichun, Liu Songtao, Wang Songwei, Wang Zhizhong

Food and Machinery

[Objective] To improve the accuracy and robustness of the robotic arm food sorting system in sorting tasks, a new sorting method combining machine vision and force sensing is studied. [Methods] On the basis of the food sorting system, a mechanical arm food sorting method integrating an improved YOLOX model and improved admittance control is proposed. By introducing a convolutional attention mechanism module (CBAM) to focus on target features, adopting a deep separable convolutional optimization network structure, and combining with a new backbone network, the recognition and localization ability of the YOLOX model for food targets is enhanced. Meanwhile, by utilizing …

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An Automated Pipetting Device Based On Visual Positioning, Zhu Ping, Chen Hongbo, Zheng Junke Oct 2025

An Automated Pipetting Device Based On Visual Positioning, Zhu Ping, Chen Hongbo, Zheng Junke

Food and Machinery

[Objective] Aiming at the poor precision and great susceptibility to human factors in the process of sample pretreatment in modern food testing laboratories, an automatic pipetting device is developed to improve the detection efficiency and quality, reduce the cost of equipment and the complexity of maintenance, and meet the needs of dual-channel pipetting of various sample liquids between different specifications of test tubes. [Methods] The transmission structure of the screw driven by the motor is adopted to realize the accurate transverse and vertical movement of the screwing jaw and the pipette tip. A micro-upgrade precision suction pump is used to …

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Effect Of Ginger Essential Oil Nanoemulsion Treatment On Preservation Quality And Microbial Changes Of Chilled Pork At 4 ℃, Li Xinwei, Chen Peihang, Lin Bimin, Miao Jianyin Oct 2025

Effect Of Ginger Essential Oil Nanoemulsion Treatment On Preservation Quality And Microbial Changes Of Chilled Pork At 4 ℃, Li Xinwei, Chen Peihang, Lin Bimin, Miao Jianyin

Food and Machinery

[Objective] To analyze the preservation effect of ginger essential oil nanoemulsion as a natural preservative for pork. [Methods] Pork tenderloin was treated with 1.5% (w/w) ginger essential oil nanoemulsion. Changes in sensory, physicochemical, and microbiological indexes of the pork were analyzed during storage at 4 ℃.High-throughput sequencing technology was applied to analyze changes in the pork microflora during storage. [Results] The pH value, volatile basic nitrogen, and malondialdehyde content of pork treated with ginger essential oil nanoemulsion were significantly lower than those of the control group treated with sterile water at different time points (P<0.05), showing good preservation effects and extending the shelf life of pork tenderloin by 6 days. The nanoemulsion effectively reduced microbial abundance and diversity and inhibited spoilage bacteria such as Macrococcus and Brochothrix, thereby delaying pork spoilage. [Conclusion] Ginger essential oil nanoemulsion can serve as a natural preservative that effectively inhibits spoilage bacteria growth, reduces protein degradation and lipid oxidation in pork, improves sensory quality, and extends the shelf life of pork products.

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Effect Of Ultrasonic Thawing On The Quality And Protein Oxidation Of Litopenaeus Vannamei, Peng Panpan Oct 2025

Effect Of Ultrasonic Thawing On The Quality And Protein Oxidation Of Litopenaeus Vannamei, Peng Panpan

Food and Machinery

[Objective] To improve the texture quality of frozen Litopenaeus vannamei. [Methods] Using Litopenaeus vannamei as the research object, the study systematically evaluates the effects of ultrasonic thawing (300, 400, 500 W) on the texture properties, thawing loss, cooking loss, TVB-N, TBARS values, protein oxidation (content of sulphydryl and carbonyl groups), amino acid release, pH value, and sensory evaluation of frozen shrimp. [Results] Ultrasonic thawing significantly increases the elasticity, hardness, and recovery of the frozen shrimp (P<0.05), with the 400 and 500 W ultrasonic groups showing significantly higher hardness and elasticity than the 300 W group. Ultrasonic thawing significantly reduces thawing loss, cooking loss, and TVB-N content in the frozen shrimp (P<0.05), with the 500 W ultrasonic group showing the most significant reduction. Amino acid analysis reveals that ultrasonic thawing significantly increases the total amino acid (TAA) content and the proportion of essential amino acids (EAA), with the release of essential amino acids such as leucine and glutamic acid being highest in the 300 and 400 W ultrasonic groups. The protein oxidation analysis shows that the sulphydryl content in the ultrasonic-thawed group was significantly higher than that in the room-temperature thawed group, while the carbonyl content was significantly lower. Sensory evaluation results indicated that the overall score of the ultrasonic-thawed group is significantly higher than that |of the room-temperature thawed group, with the 400 W ultrasonic group achieving the highest sensory score. Pearson correlation analysis indicates that the thawing loss of frozen shrimp is negatively correlated with elasticity and hardness (P<0.05), and positively correlated with TVB-N, TBARS values, and carbonyl content (P<0.05). TVB-N is negatively correlated with hardness, elasticity, and recovery (P<0.05), and positively correlated with TBARS values and carbonyl content (P<0.05). [Conclusion] Ultrasonic thawing improves the texture quality of frozen shrimp compared to room-temperature thawing and effectively inhibits lipid and protein oxidation during the thawing process, with 400 W ultrasonic thawing being the most suitable.

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Extraction Process Optimization Of Alcohol-Soluble Proteins From Highland Barley Fermentation Spent And In Vitro Antioxidant Properties, Lyu Qian, Zhao Jie, Song Yangbo, Xu Dan, Geng Guigong, Zhang Yiquan Oct 2025

Extraction Process Optimization Of Alcohol-Soluble Proteins From Highland Barley Fermentation Spent And In Vitro Antioxidant Properties, Lyu Qian, Zhao Jie, Song Yangbo, Xu Dan, Geng Guigong, Zhang Yiquan

Food and Machinery

[Objective] To optimize the extraction process of alcohol-soluble proteins from highland barley fermentation spent, aiming to enhance the added value of byproducts from highland barley wine processing. [Methods] The alcohol-soluble proteins were extracted from highland barley fermentation spent using ultrasound-assisted ethanol extraction. The yield of alcohol-soluble proteins was used as the evaluation index to analyze the effects of four factors, i.e., solid-to-liquid ratio, ultrasound temperature, ultrasound power, and ultrasound time, on the protein yield. An orthogonal test was conducted to optimize the extraction process and determine the optimal extraction conditions. SDS-PAGE analysis was performed to examine the relative molecular mass …

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Effects Of Different Drying Methods On Drying Characteristics And Quality Of Taro Strips, Li Xiaoyun, Xie Ronghua, Chen Sheng, Han Chunyang, Chen Junliang, Ren Aiqing, Duan Zhenhua Oct 2025

Effects Of Different Drying Methods On Drying Characteristics And Quality Of Taro Strips, Li Xiaoyun, Xie Ronghua, Chen Sheng, Han Chunyang, Chen Junliang, Ren Aiqing, Duan Zhenhua

Food and Machinery

[Objective] To reduce postharvest spoilage of taro and improve the drying quality of taro strips. [Methods] Four drying methods, i.e., vacuum microwave drying (VMD), hot air drying (HAD), heat pump drying (HPD), and far-infrared radiation drying (FIRD), were used to analyze their effects on the drying characteristics, physical properties (rehydration ratio, hardness, and color difference), moisture migration and distribution, and microstructure of taro strips. [Results] In terms of drying efficiency, VMD demonstrated the shortest free water removal time, followed by HAD and HPD. For color performance, the L* value followed the order HAD >HPD >FIRD >VMD. In terms of hardness, …

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Innovative Expression Of Regional Culture In Food Packaging Design, Wei Yiheng, Chen Zhiying Oct 2025

Innovative Expression Of Regional Culture In Food Packaging Design, Wei Yiheng, Chen Zhiying

Food and Machinery

The expression of regional culture in food packaging design not only contributes to enhancing the competitiveness of food and strengthening consumers' emotional identification, but also holds great significance for the inheritance of traditional regional culture. On the basis of clarifying the importance of integrating regional culture with food packaging design, this article points out the practical problems currently existing in this process, and proposes practical paths such as extracting regional cultural representations, translating regional cultural images, completing the design of regional cultural symbols, and incorporating modern design methods.

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The Link October 28, 2025, Access To Justice Institute Oct 2025

The Link October 28, 2025, Access To Justice Institute

The Link Newsletter

No abstract provided.

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Investigating Characteristic Droplet Size Distributions In Large Eddy Simulations Of Stratocumulus Clouds, Nithin Allwayin, Daniel J. Miller, Kamal Kant Chandrakar, Michael L. Larsen, Raymond A. Shaw Oct 2025

Investigating Characteristic Droplet Size Distributions In Large Eddy Simulations Of Stratocumulus Clouds, Nithin Allwayin, Daniel J. Miller, Kamal Kant Chandrakar, Michael L. Larsen, Raymond A. Shaw

Michigan Tech Publications

Cloud processes relevant to radiative and precipitation properties depend on the shape of the cloud droplet size distribution. Recent holographic observations revealed that cloud droplet populations do not have the same size distribution shapes throughout but form regions of characteristic distributions with similar microphysical properties. We investigate the existence and properties of these characteristic distributions within Large-Eddy Simulations of stratocumulus clouds using Lagrangian and bin microphysics schemes. Distribution types are identified, revealing localized characteristic distributions that vary on the scale of the largest convective cell for simulations with bin microphysics. The results from the Lagrangian microphysics scheme hint at similar …

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The Horror And The Passion: The Christian/Secular Paradigm In The Twentieth-Century Southern Gothic, Matthew Ryan Pike Oct 2025

The Horror And The Passion: The Christian/Secular Paradigm In The Twentieth-Century Southern Gothic, Matthew Ryan Pike

Electronic Theses and Dissertations Archive

The goal of this dissertation is to provide a foundational definition of the southern gothic literary genre. In this analysis, I argue that the core of the southern gothic is a Christian/secular paradigm and that all of the conflict within these narratives is principally grounded in this dichotomy. Not only does this framework provide the best interpretive lens to understand the genre, but it ameliorates the cloud of confusion in the critical scholarship, wherein a wide and fluid array of propositions are advanced on what essentially comprises the southern gothic. I execute this via an interdisciplinary strategy, adopting scholarship and …

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The Life Of A Copyright, Annabel Haddock Oct 2025

The Life Of A Copyright, Annabel Haddock

Cardozo Arts & Entertainment Law Journal (AELJ) Blog

On August 23rd, 2021, stand-up comedian Caroline Timoney posted a TikTok video where she stated, “I fear I may have girl bossed a little too close to the sun.” The video went viral and, to this day, it is her most viewed post on the platform, with upwards of seven and a half million views as of October 13, 2025, and over twenty-four thousand videos reposted using her audio. Taylor Swift’s twelfth and most recent album, The Life of a Showgirl, was released on October 3rd, 2025, and includes a song titled “CANCELLED!” featuring the lyric “Did you girlboss …

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Fahp-Topsis Model In Ranking Critical Success Factors Of E-Learning: A Comparative Analysis Of Normalization Methods, Judith R. Pande, David Koloseni, Septimi Kitta Oct 2025

Fahp-Topsis Model In Ranking Critical Success Factors Of E-Learning: A Comparative Analysis Of Normalization Methods, Judith R. Pande, David Koloseni, Septimi Kitta

Tanzania Journal of Science

The teaching and learning process has become effective and explicit due to the progressive development of e-learning. This has significantly transformed the education framework. As a result, evaluating the usefulness of e-learning requires a detailed understanding of the critical success factors that impact the success of e-learning environments. This study ranked these factors using Multi-Criteria Decision-Making techniques. Specifically, the Fuzzy Analytical Hierarchy Process was used to determine the weight of each factor, while the Technique for Order of Preference by Similarity to Ideal Solution was used to rank the factors of e-learning. The study also examined and compared four normalization …

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Assessment Of Tumour Control Probability And Equivalent Uniform Dose In Conventional 3d-Crt Vs. Hypo-Fractionated Imrt, Jumaa D. Kisukari, Mwingereza J. Kumwenda, Khamis O. Amour, Ehab M. Attalla, Emmanuel Lugina Oct 2025

Assessment Of Tumour Control Probability And Equivalent Uniform Dose In Conventional 3d-Crt Vs. Hypo-Fractionated Imrt, Jumaa D. Kisukari, Mwingereza J. Kumwenda, Khamis O. Amour, Ehab M. Attalla, Emmanuel Lugina

Tanzania Journal of Science

Hypo-fractionated (HF) radiotherapy offers a promising solution to improve access to cancer treatment in resource-limited settings, such as developing countries, by reducing the number of treatment sessions compared to conventional fractionation (CF). For effective implementation, evaluating Equivalent Uniform Dose (EUD) and Tumour Control Probability (TCP) is essential to ensure treatment efficacy across different radiotherapy techniques. This study compares treatment plans generated using Three-Dimensional Conformal Radiation Therapy with Conventional Fractionation (3D-CRT CF) and Intensity Modulated Radiation Therapy with Hypo-fractionation (IMRT HF) in patients with localized prostate cancer. A total of 50 patients were CT-simulated, and their images were imported into a …

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A Comparative Study For Classical Machine Learning Models For Swahili Social Media Sentiment Analysis, Mahadia Tunga, Davis David Oct 2025

A Comparative Study For Classical Machine Learning Models For Swahili Social Media Sentiment Analysis, Mahadia Tunga, Davis David

Tanzania Journal of Science

Despite sentiment analysis being one of the most popular applications in Natural Language Processing (NLP), most studies are skewed towards languages with a rich corpus (language database). Less emphasis has been placed on low-resource languages like Swahili. Swahili is the official language of the African Union and of 4 countries in East Africa, and is spoken by many people on the African continent. This study performed sentiment analysis using 3,000 tweets hosted on the Zindi Africa platform. Data was processed using a term frequency-inverse document frequency vectorization method, and five classical machine learning algorithms (RandomForest, XgBoost, and CatBoost, HistogramGradientBoost, LightGradientBoos) …

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Evaluating Weather Research And Forecasting Model In Simulating March-May Rainfall In Tanzania: Implications Of Selecting Parameterization Schemes, Mohamed H. Mohamed, Makungu James Ng'oga Oct 2025

Evaluating Weather Research And Forecasting Model In Simulating March-May Rainfall In Tanzania: Implications Of Selecting Parameterization Schemes, Mohamed H. Mohamed, Makungu James Ng'oga

Tanzania Journal of Science

The current study evaluates the performance of the Weather Research and Forecasting (WRF) model in simulating seasonal rains of March-May (MAM) in Tanzania, based on the implication of selecting parameterization scheme combinations. The model was configured into two domains with horizontal resolutions of 36 km and 12 km and the initial and lateral boundary conditions were provided by the Climate Forecast System Version 2 at 00 UTC. However, only the inner domain of 12 km was used for analysis, which has a fine horizontal resolution that accounts for small scale features such as terrains. Twelve simulations have been performed using …

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Mathematical Analysis Of Toxicants And Diseases Impact On A Prey-Predator System With Control Interventions, Nuru Yazidi Juma, Thadei Damas Sagamiko, James Philbert Mpele Oct 2025

Mathematical Analysis Of Toxicants And Diseases Impact On A Prey-Predator System With Control Interventions, Nuru Yazidi Juma, Thadei Damas Sagamiko, James Philbert Mpele

Tanzania Journal of Science

This study developed a generic prey-predator mathematical model incorporating logistic growth for prey and a Holling Type I functional response for predator consumption. Prey-predator interactions form the foundation of ecological balance, but in recent decades these systems have been increasingly threatened by toxicants and infectious diseases. The combined effect of these challenges can lead to severe population declines, biodiversity loss, and ecosystem instability, making their study important for conservation and environmental management. The model includes the effects of diseases and toxicants on prey and toxicants only on predators, and explores optimal control strategies to mitigate these threats. Without considering time …

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Design Of High-Performance Synchronous Reluctance Motor For Hybrid Electric Vehicle Application, Fred Loita, Jackson Justo Oct 2025

Design Of High-Performance Synchronous Reluctance Motor For Hybrid Electric Vehicle Application, Fred Loita, Jackson Justo

Tanzania Journal of Science

This paper presents the simulation-based design of a synchronous reluctance motor (SynRM) coupled electromechanical system suitable for the hybrid electric vehicle. The study considers SynRM with a 75kW power rating with the capability to produce up to 125kW maximum power for the electric vehicle. The focus is mainly on rotor and stator design; the angles of the flux-barrier ends are considered to reduce the torque ripple due to the slot harmonics. Reluctance machines are indeed competitive for applications requiring high efficiency at low cost. However, it is a challenging task to find design solutions that ensure structural integrity of the …

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Rainwater Harvesting For Domestic Use In Suburb Areas Of Dar Es Salaam, Tanzania: A Case Study Of Wazo Hill, Scholastica S. Ishengoma, Mahir Mohammed Said, Neema O. Msuya Oct 2025

Rainwater Harvesting For Domestic Use In Suburb Areas Of Dar Es Salaam, Tanzania: A Case Study Of Wazo Hill, Scholastica S. Ishengoma, Mahir Mohammed Said, Neema O. Msuya

Tanzania Journal of Science

Despite the increasing reliance of rainwater harvesting in semi-urban areas, there is a lack of comprehensive localized data on the safety of harvested rainwater, particularly in areas such as Wazo Hill where communities predominantly depend on it. This study evaluates the quality of harvested rooftop rainwater intended for human consumption and assesses its compliance with the World health Organization (WHO) and Draft East Africa Standards (DEAS) for drinking water. Rainwater samples were collected from various catchment surfaces and storage systems located in Wazo Hill, Tanzania. A stratified random sampling technique was employed to select the households equipped with rainwater harvesting …

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Assessment Of Bacteriological Quality And Physico-Chemical Parameters Of Domestic Water Sources In Relation To Human Health Risk In Kigamboni, Tanzania, Joseph A. Mwakosya Oct 2025

Assessment Of Bacteriological Quality And Physico-Chemical Parameters Of Domestic Water Sources In Relation To Human Health Risk In Kigamboni, Tanzania, Joseph A. Mwakosya

Tanzania Journal of Science

Data on bacteriological quality and physico-chemical parameters is crucial for protection and sustainable utilization of water resources. This study determined bacteriological quality and physico-chemical parameters of well and tap water sourcesin relation to human health risk in Kigamboni, Tanzania. Thirty water samples were collected randomly and analyzed using SPSS software. The mean values for well water samples of pH, electrical conductivity (EC), total dissolved solids (TDS), turbidity, Chloride, Sulphate, Nitrate, Phosphate, and Calcium Carbonate were 7.2, 960.27 mg/L, 528.13 mg/L, 1.52 NTU, 288.00 mg/L, 30.13 mg/L, 0.05 mg/L, 0.08 mg/L, and 160.07 mg/L, respectively. The mean values for tap water …

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Comparative Study On The Application Of Gra, Psi And Hybrid Psi-Gra Techniques For Optimising Turning Parameters In Multi-Criteria Problems, Mussa Iddi Mgwatu Oct 2025

Comparative Study On The Application Of Gra, Psi And Hybrid Psi-Gra Techniques For Optimising Turning Parameters In Multi-Criteria Problems, Mussa Iddi Mgwatu

Tanzania Journal of Science

The optimum turning parameters help to justify the investment in machine tools for manufacturing industries. However, solving optimisation models to achieve optimum turning parameters in multi-criteria environment is complex leading to the application of multi-criteria decision-making techniques. This paper compares three multi-criteria decision-making techniques in determining optimum turning process parameters namely spindle speed, feed rate and depth of cut. The performance criteria are material removal rate, consumed electrical energy and tool wear rate. Example data for turning process were obtained from other studies while the analyses for multi-criteria decision-making were performed using grey relational analysis (GRA), preference selection index (PSI) …

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Heavy Metal Contamination And Health Risks In Katoro's Artisanal Gold Mining Soils, Tanzania, Innocent J. Lugendo, Venance Mwesiga Oct 2025

Heavy Metal Contamination And Health Risks In Katoro's Artisanal Gold Mining Soils, Tanzania, Innocent J. Lugendo, Venance Mwesiga

Tanzania Journal of Science

This study assessed heavy metal contamination in surface soils from artisanal gold mining areas in Katoro, Tanzania, evaluating ecological and human health risks. Thirty-six soil samples were systematically collected from three mining villages (Bingwa, Isenye, and CCM) at varying distances ranging from 30 to 90 m from active mining pits alongside twelve control samples from a non-mining area for comparison purposes. Concentrations of Cr, Cu, Ni, Zn, Pb, and As in soil samples were analyzed using energy-dispersive X-ray fluorescence spectrometry (EDXRF). Results revealed severe contamination, with Cr (117–1255 mg/kg), Cu (81–104 mg/kg), and Ni (89–271 mg/kg) exceeding permissible limits. The …

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Crude Extracts Of Seaweeds (Ulva Lactuca And Eucheuma Spinosum) As Biostimulants For Enhancing Sweet Pepper Production, Charles Olambo Joseph, Seif Amour M Oct 2025

Crude Extracts Of Seaweeds (Ulva Lactuca And Eucheuma Spinosum) As Biostimulants For Enhancing Sweet Pepper Production, Charles Olambo Joseph, Seif Amour M

Tanzania Journal of Science

Sweet pepper is the world’s second most important vegetable after tomato, making its production vital for economic growth and supporting livelihoods. However, growing concerns about environmental protection and sustainability make the search for eco‑friendly alternatives to synthetic fertilizers inevitable. Seaweed extracts are rich in bioactive compounds that can stimulate key plant growth and defense pathways making them effective biofertilizer. A Randomized Complete Block Design was laid out to evaluate the potential of seaweed extract (U. lactuca and E. spinosum) in promoting the growth and productivity of sweet pepper(Capsicum annuum L.). Seaweed was applied in both liquid and …

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Spatio-Temporal Dynamics Of The Onset And Cessation Of Ond Rainy Season Across Bimodal Regions Of Tanzania, Rajabu J. Mangara, Paul Ts Limbu Oct 2025

Spatio-Temporal Dynamics Of The Onset And Cessation Of Ond Rainy Season Across Bimodal Regions Of Tanzania, Rajabu J. Mangara, Paul Ts Limbu

Tanzania Journal of Science

This study investigates the temporal variability of the onset, cessation, and duration of the October-November-December (OND) rainy season in the bimodal rainfall region of Tanzania. Utilizing daily precipitation data from the Multi-Source Weighted-Ensemble Precipitation dataset for the period 2014–2023, the study employs the Accumulated Daily Index method to determine the onset and cessation of rains, with the seasonal duration computed as the difference between these dates. Variability in onset, cessation, and season length was quantified using the Coefficient of Variation. The findings highlight significant spatial variability in onset, with early rains in northwestern areas (e.g., Bukoba) and coastal zones, commencing …

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Comparative Evaluation Of Dicyclohexylamine And N-Methyldiethanolamine As Corrosion Inhibitors For Top Of Line Corrosion On Api X80 Carbon Steel In Saturated Carbon Dioxide Aqueous Solutions, Frida W. Andalu, Abraham K. Temu, Alfred R. Akisanya, Joseph Yn Philip Oct 2025

Comparative Evaluation Of Dicyclohexylamine And N-Methyldiethanolamine As Corrosion Inhibitors For Top Of Line Corrosion On Api X80 Carbon Steel In Saturated Carbon Dioxide Aqueous Solutions, Frida W. Andalu, Abraham K. Temu, Alfred R. Akisanya, Joseph Yn Philip

Tanzania Journal of Science

This work has evaluated the efficiency of selected volatile corrosion inhibitors in mitigation of top of line corrosion in wet gas pipeline at different temperatures. The main challenge of top of line corrosion in carbon dioxide rich environment is the ability of the volatile corrosion inhibitor to effectively mitigate corrosion at adverse conditions. Electrochemical corrosion experiments using potentiodynamic polarization method were conducted at temperatures of 20 ℃, 35 ℃ and 45 °C to evaluate the efficiency of dicyclohexylamine and n-methyldiethanolamine corrosion inhibitors for top of line corrosion inhibition on carbon steel specimens derived from API X80 natural gas pipelines. The …

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Energy-Saving Simple Adaptive Recursive Terminal Sliding Mode Control For Industrial Feed Drive Systems, Haryson Johanes Nyobuya Oct 2025

Energy-Saving Simple Adaptive Recursive Terminal Sliding Mode Control For Industrial Feed Drive Systems, Haryson Johanes Nyobuya

Tanzania Journal of Science

This paper proposes a simple adaptive recursive terminal sliding mode control approach for industrial feed drive systems. The design employs a recursive sliding mode structure that eliminates the reaching phase and ensures finite-time convergence of the tracking error. To mitigate chattering, a second-order nonsingular terminal sliding mode is used and the parameters to compensate for disturbances are obtain in terms of integral form and a proportional terminal term, which enhances disturbance rejection and further guarantees finite-time convergence. The proposed controller significantly reduces the tracking error and saves energy for the feed drive system. Numerical simulations on an industrial feed drive …

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Nickel (Ii) Complex Decorated Zinc-Cadmium Sulfide Type-Ii Heterojunction For Enhanced Photocatalytic Hydrogen Production, Miza Kombo, Abdul Muhamed, Suleiman Suleiman, An-Wu Xu Oct 2025

Nickel (Ii) Complex Decorated Zinc-Cadmium Sulfide Type-Ii Heterojunction For Enhanced Photocatalytic Hydrogen Production, Miza Kombo, Abdul Muhamed, Suleiman Suleiman, An-Wu Xu

Tanzania Journal of Science

The binary metal sulfide Zn0.5Cd0.5S has emerged as a promising photocatalyst for hydrogen (H2) production via visible-light-driven water splitting. However, its practical application is limited by rapid charge carrier recombination and insufficient stability. In this study, nickel (II)-(3-pyridyl) benzimidazole (NPBIm) complexes were synthesized and employed an ultrasonic-assisted method to decorate the surface of Zn0.5Cd0.5S, forming a novel metal-complex semiconductor heterostructure system (Zn0.5Cd0.5S/NPBIm). This hybrid system significantly enhances photocatalytic H2 evolution under visible light irradiation. Experimental findings reveal that the incorporation of NPBIm molecules improves the …

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Modeling The Effects Of Screening, Vaccination, Treatment, And Non-Pharmaceutical Controls On Leptospirosis Transmission Dynamics, Janeth Michael, Herieth Rwezaura, Goodluck Mlay, Nyimvua Shaban Mbare Oct 2025

Modeling The Effects Of Screening, Vaccination, Treatment, And Non-Pharmaceutical Controls On Leptospirosis Transmission Dynamics, Janeth Michael, Herieth Rwezaura, Goodluck Mlay, Nyimvua Shaban Mbare

Tanzania Journal of Science

Leptospirosis is the world’s most common zoonotic disease and remains a significant public health challenge, particularly in regions with poor sanitation and high exposure risks. This study aims to evaluate the effectiveness of combined interventions: screening, vaccination, treatment, and non-pharmaceutical controls in reducing leptospirosis transmission in human and domestic animal populations. The study develops and analyzes a deterministic compartmental model with eleven compartments representing human, domestic animal, and bacterial populations. Stability analysis reveals that the Disease-Free Equilibrium (DEF) is globally asymptotically stable when the effective reproduction number is less than a unit ( < 1), ensuring disease eradication under these conditions, whereas the Endemic Equilibrium Point (EEP) remains stable when > 1. The study employs the normalized forward …

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Dynamic Lqr Control For Improved Dc Link Voltage Stability In Grid-Integrated Solar Pv System, Peter Makolo, Mwanajuma Gora, Francis Mwasilu, Jackson Justo Oct 2025

Dynamic Lqr Control For Improved Dc Link Voltage Stability In Grid-Integrated Solar Pv System, Peter Makolo, Mwanajuma Gora, Francis Mwasilu, Jackson Justo

Tanzania Journal of Science

The integration of photovoltaic (PV) systems into power grids poses a significant challenge to voltage stability, especially at the DC link. Fluctuations in solar irradiance directly cause power variations and instability in this critical interface. If not properly controlled, this variability can lead to inefficiencies, equipment damage, and widespread grid disturbances. To address the abovementioned challenge, this paper proposes a dynamic converter control strategy designed to enhance DC link voltage stability in grid-integrated solar PV system. The core of the proposed control system is based on a Linear Quadratic Regulator (LQR) mechanism, implemented within a two-stage, PV grid connected system …

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