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84 articles for “deterioration”
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Research ArticleOpen accessEvery word in the titleAn Optimal Inventory Policy for Items having Linear Demand and Variable Deterioration Rate with Trade CreditSingh Shivraj, Singh SarbjitProblem statement: Demand considered in most of the classical inventory models is constant, while in most of the practical cases the demand changes with time. In this study model has been framed to study the items whose demand changes with time and deterioration rate increases with time. The effect of permissible delay is also incorporated in this study. The objective … …Journal of Mathematics and Statistics, Vol. 5, Issue 4 · 31 Dec 2009 · 7,020 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAn Optimal Control Approach to Inventory-Production Systems with Weibull Distributed DeteriorationMd. Azizul Baten, Anton Abdulbasah KamilProblem statement: We studied the inventory-production system with two-parameter Weibull distributed deterioration items. Approach: The inventory model was developed as linear optimal control problem and by the Pontryagin maximum principle, the optimal control problem was solved analytically to obtain the optimal solution of the problem. Results: It was then illustrated with the help of an example. By the principle of … …Journal of Mathematics and Statistics, Vol. 5, Issue 3 · 30 Sep 2009 · 7,549 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMitigation of Quality Deterioration and Insect Infestation in Rice Bran During Storage Through Heat Treatment and Vacuum SealingMuhammad Ridla, Nahrowi, MaryonoRice bran is a valuable feed ingredient due to its high energy and lipid content; however, its utilization is limited by quality deterioration during storage, including physicochemical changes and insect infestation. This study evaluated the effects of vacuum sealing and heat treatment on the physical properties, chemical composition, fatty acid profile, and insect infestation of rice bran stored under ambient … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 1 · 16 May 2026 · 1,727 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPolicy Decisions for a Price Dependent Demand Rate Inventory Model with Progressive Payments SchemeMukesh Kumar, Rajat KumarProblem statement: In this proposed research, we developed an inventory model to formulate an optimal ordering policies for supplier who offers progressive permissible delay periods to the retailer to settle his/her account. We assumed that the annual demand rate as a decreasing function of price with constant rate of deterioration and time-varying holding cost. Shortages in inventory are allowed which … …Journal of Mathematics and Statistics, Vol. 8, Issue 1 · 17 Feb 2012 · 7,048 accessesView PDFCite
Research ArticleOpen accessIn the keywordsLot-Sizing Decisions under Trade Credit Depending on the Ordering Quantity in Fuzzy Annual DemandChui-Yu Chiu, Zhi-Ping Lin, Yi LinProblem statement: In reality, there are of various products such as liquids, volatile, medicines and materials, in which the rate of deterioration is very large. However, little attention has been mentioned what the effects of deterioration occur in most inventory systems. Also, the loss of the deterioration should not be neglected as an important issue. Approach: In this study, we … …American Journal of Applied Sciences, Vol. 6, Issue 12 · 31 Dec 2009 · 6,763 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Stock Dependent Economic Order Quantity Model for Perishable Items Under Inflationary ConditionsSingh Sarbjit, Singh Shiv RajProblem statement: In most of the earlier inventory models, effect of inflation has been ignored, which is playing pilot role in present environment. In this article, we have proposed an economic order quantity model for deteriorating items having stock dependent demand (whose demand varies with the stock) under the effect of inflation. Approach: Firstly, problem is framed in the form … …American Journal of Economics and Business Administration, Vol. 2, Issue 3 · 30 Sep 2010 · 7,387 accessesView PDFCite
Research ArticleOpen accessIn the abstractImpact of Vitamin D Deficiency on Cardio Metabolic Ageing in Middle Aged Adults in India: A Comparative AnalysisSumit Kumar, Adithi K, Shailaja S MoodithayaAdvancing age is accompanied by a gradual deterioration in physiological function, resulting in an increased risk of chronic diseases and early mortality. Growing evidence suggests that inadequate vitamin D status may be associated with unfavourable metabolic and cardiovascular alterations. Nevertheless, information regarding the association of vitamin D status with integrated cardio-metabolic biomarkers of ageing in middle-aged adults is currently limited. … …OnLine Journal of Biological Sciences, Vol. 26, Issue 3 · 3 Sep 2026 · 732 accessesView PDFCite
Technical ReportOpen accessIn the abstractFish Pond Storage Preserves Chili Puree, but Nitrogen Flow-Through Fails: Unravelling the MechanismDaimon Syukri, Rina Yenrina, Rini et al.Perishable food preservation in rural and resource-limited settings remains a significant challenge, as conventional techniques frequently depend on synthetic additives or energy-intensive processes incompatible with green chemistry principles. This study evaluated fish pond immersion as a novel, low-cost preservation method for freshly ground chili purée, investigating its efficacy with and without continuous nitrogen gas flow. Chili purée samples were packaged … …OnLine Journal of Biological Sciences, Vol. 26, Issue 1 · 30 Mar 2026 · 1,344 accessesView PDFCite
Research ArticleOpen accessIn the abstractMicrobiological Analysis of Tilapia Fillet Stored Under Refrigerated ConditionsItzel Yashita Prado-Toledo, Katia Nayely Ramos-Santoyo, Martha Lorena Guzmán-Robles, Alejandro De Jesús Cortés-SánchezFish is a food susceptible to deterioration and contamination by microorganisms through the food chain, affecting its quality and safety. Fish is subjected to various processing and preservation methods in order to maintain availability, quality and safety for a longer time. The objective of the study was the microbiological analysis of tilapia fillets in refrigeration for 12 days. The tilapia … …OnLine Journal of Biological Sciences, Vol. 22, Issue 1 · 10 Mar 2022 · 5,945 accessesView PDFCite
Case ReportOpen accessIn the abstractBrief Report: 20-Year Follow-Up of an Infant with Neurological Impairment Born to a Mother with Variant Creutzfeldt-Jakob DiseaseJustin Penner, Anjali Rampersad, James E. Burns et al.A term infant born via uncomplicated caesarian section was noted to be jittery, hypotonic, and have pooling of secretions at birth. Over the first four weeks of life, the infant developed four limb hypertonia, hyperreflexia, and clonus. MRI at 3.5 weeks old showed brain immaturity, poor myelination, and increased signal in the dorsal thalami. At six months, dystonic features with … …American Journal of Infectious Diseases, Vol. 21, Issue 1 · 7 Mar 2025 · 7,660 accessesView PDFCite