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355 results for “high temperature”
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Research ArticleOpen accessIn the keywordsCharacterization of the Fracture Toughness of the Concrete Mortars Exposed to Elevated TemperaturesS. Djaknoun, A. Ahmed Benyahia, E. OuedraogoThe main objective of this research was the characterisation of the fracture toughness of concrete mortars exposed to high temperatures by using notched specimens in three point bending tests. The specimens have different lengths and were heated at different temperatures ranging from room temperature up to 900°C. The experimental test results obtained are closed with those reported by the literature, … …American Journal of Applied Sciences, Vol. 6, Issue 2 · 28 Feb 2009 · 6,524 accessesView PDFCite
Research ArticleOpen accessIn the keywordsOn Expediency of the Preliminary Heat Treatment for Liquid-Phase Reduction of Waste Steelmaking SlagEvgeny Trofimov, Ilya Chumanov, Andrey Dildin, Olga SamoylovaThe problem of using waste steelmaking slags as a technogenic source of metallurgical raw materials still has no sustainable solution and requires innovative ideas and approaches. The purpose of this paper is a theoretical and experimental study of the possibility and expediency of the preliminary heat treatment of steelmaking slags in a reducing medium for greater metal recovery. The subject … …American Journal of Applied Sciences, Vol. 12, Issue 12 · 26 Nov 2015 · 7,030 accessesView PDFCite
Research ArticleOpen accessIn the keywordsFatty Acid Content of Bovine Milkfat From Raw Milk to YoghurtO. O. Santos Júnior, M. R. Pedrão, L. F. Dias et al.Problem statement: The present study aimed to study the evolution of fatty acid content, focusing on rumenic acid content, from raw milk to yoghurt processed from this milk. Approach: Milk samples were collected in a dairy plant in the northwest of Paraná State weekly in January 2011 (Brazilian summer). It processed one truck load of 26,000 L of refrigerated type-C … …American Journal of Applied Sciences, Vol. 9, Issue 8 · 7 Jul 2012 · 7,877 accessesView PDFCite
Research ArticleOpen accessIn the abstractFractionated Distillation Behavior and Aroma Component Enrichment of Citronella Oil (Cymbopogon winterianus Jowitt) from West SumatraDaimon Syukri, Anni Faridah, Bayu Indra Lesmana et al.This study aimed to separate the constituent components of citronella oil into several fractions with high purity and to identify the characteristics of the resulting fractions. The research was conducted using an exploratory approach to investigate the fractionation behavior of citronella oil more deeply. The raw materials were citronella oils obtained from three regions in West Sumatra: Batusangkar, Solok, and … …OnLine Journal of Biological Sciences, Vol. 26, Issue 3 · 10 Aug 2026 · 849 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Analysis of Laboratory Measured and PVTP Software DataOluwasanmi Samuel Teniola, Mercy Isaiah OkegbemiCubic Equations of State (EOS), including the Peng-Robinson (PR) and Soave-Redlich-Kwong (SRK) models, are foundational in petroleum engineering for modeling the thermodynamic behavior of hydrocarbon systems. These EOS are widely used to predict phase behavior and Pressure-Volume-Temperature (PVT) properties, which are crucial for reservoir simulation, production forecasting, and enhanced oil recovery. However, their predictive accuracy diminishes when applied to complex … …American Journal of Engineering and Applied Sciences, Vol. 18, Issue 1 · 20 Dec 2025 · 2,761 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Ultra-High-Pressure Treatment on the Chemical Composition and Aroma of Flue-Cured Tobacco Leaves for Heated Tobacco ProductsXinbo Lu, Jie Yin, Ying Yuan et al.The influences of different Ultra-High-Pressure (UHP) treatments on the chemical composition and the low-temperature pyrolysis products of Flue Cured Tobacco Leaves (FCTL) that applied in heated tobacco products were investigated in this study. Results indicated that UHP treatment reduced total alkaloids content significantly (p<0.05), especially 500-600 MPa treatment group (2.34±0.00%, 2.34±0.01%). Increase in sugars and potassium content were observed after … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 2 · 19 Oct 2025 · 2,150 accessesView PDFCite
Review ArticleOpen accessIn the abstractOptimization of Red Sorghum (Sorghum bicolor (L.) Moench) Malt Mashing Using Response Surface MethodologyArthur Kapepa Amisi et al.The Response Surface Methodology (RSM) was used to optimize the Released Glucose Equivalent during red sorghum malt mashing. Three parameters were tested: the β-amylase (EC 3.2.1.2) temperature level (min value = 62°C and max value = 63°C, TB), the α-amylase (EC 3.2.1.1) temperature level (min value = 72.5 and max value = 77.5°C, TA) and the duration of each stage … …American Journal of Applied Sciences, Vol. 21, Issue 1 · 28 Nov 2024 · 8,092 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalyzing Temperature-Dependent Thermal Properties of Titanium Aluminide Using ANN Predictive ModelingArmaghan Shalbaftabar, Kristen Rhinehardt, Dhananjay KumarThis study presents a comprehensive analysis of the thermal behavior of Titanium Aluminide (TiAl) across a range of temperatures using an Artificial Neural Network (ANN) predictive model. The study investigates various material properties of TiAl, including Band Gap, Young Module, Density, Energy Absorption, Thermal Conductivity, and Specific Heat, at different temperature points. The ANN model accurately captures the temperature-dependent trends … …American Journal of Engineering and Applied Sciences, Vol. 17, Issue 4 · 20 Nov 2024 · 4,308 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of Temperature and pH for Protease Production from Some Bacterial Isolates of Mangrove WatersFeskaharny Alamsjah, Yorasakhi Ananta, Anthoni AgustienProtease enzymes are widely used in biotechnology to produce amino acids and peptides from high molecular substrates, as well as in the leather industry for wastewater treatment, textiles, pharmaceuticals, cosmetics, leather processing, and poultry industry. Indonesia's demand for protease enzymes is increasing. This study aims to optimize the temperature and pH for the production of protease from certain bacterial isolates … …OnLine Journal of Biological Sciences, Vol. 24, Issue 4 · 11 Sep 2024 · 4,425 accessesView PDFCite
Research ArticleOpen accessIn the abstractThermodynamic Modeling and Heat-Moisture Transfer Characteristic Analysis of in Situ Thermal Desorption System for Polluted SoilHuijuan Xu, Yanjun Bi, Lijun Gao, Dongxiao MaIn Situ Gas Thermal Desorption (ISGTD) is one of the effective approaches for organic contaminated soil. To investigate the heat-moisture transfer characteristics of soil during the heating process, a radially layered coupled heat-moisture model of the ISGTD system is established. The temperature and moisture distribution along the radial direction of the heat source, as well as the synergistic action of … …American Journal of Biochemistry and Biotechnology, Vol. 20, Issue 3 · 28 Aug 2024 · 4,035 accessesView PDFCite