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Research ArticleOpen accessEvery word in the titleEffect of Temperature on the Color of Natural Dyes Extracted Using Pressurized Hot Water Extraction MethodNursyamirah Abd Razak, Siti Marsinah Tumin, Ruziyati TajuddinProblem statement: Traditionally, extraction of natural dyes with boiling method produced only one single tone of colorant/dyes which involved plenty of water in several hours of extraction time. A new modern extraction technique should be introduced especially to textile dyers so that a variety of tone of colorants can be produced in a shorter time with less consumption of water. … …American Journal of Applied Sciences, Vol. 8, Issue 1 · 31 Jan 2011 · 9,850 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Soil Storage at Freezing Temperatures on Soil Enzymatic ActivitiesAinsley Lougheed, Kabwe NkongoloSoil enzyme activities are good indicators of soil health. It has been hypothesized that soil storage before analysis might affect microbial function. The objective of the present study was to determine if soil storage at -20 and -80°C affects soil enzymatic activities. Soil samples were collected and stored for four weeks at -20 and -80°C. Activities of nine enzymes were … …American Journal of Biochemistry and Biotechnology, Vol. 20, Issue 3 · 12 Aug 2024 · 4,984 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleScanning Electron Microscopic Evaluation of Self-Compacting Concrete Spalling at Elevated TemperaturesMahmoud B. Alhasanat, Arabi N. Al Qadi, Omar A. Al Khashman, Ahmad DahamshehThis paper reports the effect of addition of Polypropylene (PP) fibers in the performance of Self-Compacting Concrete (SCC) under elevated temperatures. Various SCC mixtures were made with PP fiber at 0.0, 0.05, 0.10 and 0.15% by volume added. The specimens were exposed to elevated temperatures (200°C [392°F], 400°C [752°F] and 600°C [1112°F]). The microstructure of the matrix was investigated. This … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 1 · 7 Mar 2016 · 8,433 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of High Incubation Temperature on Embryo Livability, Mortality, Hatchability, and Chick Quality in Commercial LayersKhathutshelo Simon Masia, Khathutshelo Agree Nephawe et al.This research was conducted to determine the effect of high incubation temperature profiles on embryo livability, mortality, hatchability, and chick quality in commercial layers. Incubation temperature profiles were: Control (day 0-4: 37.8°C, day 5-9: 37.2°C, day 10-11: 37.0°C, day 12-13: 36.8°C), moderately high (day 0-4: 38.5°C, day 5-9: 38.2°C, day 10-11: 37.5°C, day 12-13: 37.0°C) and extremely high (day 0-4: … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 4 · 19 Nov 2024 · 5,213 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOptimization 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 accessEvery word in the titlepH and Temperature Optimization of Several Bacterial Isolates from Mangrove Waters in the Mandeh Area to Produce Cellulase EnzymeFeskaharny Alamsjah, Dwiky Rahmadi Aswan, Anthoni AgustienEnzymes serve as vital biological catalysts, playing a crucial role in numerous industrial processes to accelerate specific biochemical reactions. In this study, we aimed to optimize cellulase enzyme production by investigating the influence of temperature and pH on four bacterial isolates: PUA-18, PUA-21, PUA-28, and PUA-38. The experiment was carried out in triplicates using a one-factor-at-a-time design, with pH and … …OnLine Journal of Biological Sciences, Vol. 24, Issue 3 · 28 Mar 2024 · 6,476 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInfluence of Time, Temperature and Pressure on the Creasing of Wool/Polyester Blended FibersBrian F.G. KatzStudies investigating the response of a natural/synthetic blended material to variations of time, temperature and pressure with respect to induced deformations have been carried out. Such a material is interesting due to its complexity of responses which are dependent on the nature of each fiber. The study’s sample was a wool/polyester blend with a 45/55 composition respectively. This combination is … …American Journal of Engineering and Applied Sciences, Vol. 14, Issue 4 · 23 Dec 2021 · 6,397 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMolecular Dynamics Simulation and Analysis of Crystallization System in PVC Tunnel Drain-Pipe at Different TemperaturesZhongwei Hou, Xuefu Zhang, Yuanjiang ZhouAiming at the problem that carbonate and calcium ions are easy to crystallize and precipitate in the drain-pipes of limestone tunnels and then adsorb on PVC pipes in Western China, a "solid-liquid interface model" for the interaction between PVC materials and ions in aqueous solution is established by using the molecular dynamics simulation software materials studio and the microscopic mechanism … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 1 · 9 Mar 2021 · 6,279 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStatistical Modeling of Temperature Extremes Behaviour in GhanaTwumasi-Ankrah Sampson, Nyantakyi Agyei KwadwoThis paper focuses on modeling the extreme maximum temperature in Ghana using the extreme value theory. This is to inform decision-makers to help them plan appropriate risk mitigating measures to reduce the damage caused by drought. The block maxima with Generalized Extreme Value (GEV) and the General Pareto (GP) (with “all excesses” and decluster peaks) were used on 113 years … …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 10 Jan 2019 · 7,117 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Temperature and Precipitation on Global Mangrove Rhizophora Species DistributionAroloye O. Numbere, Gerardo R. CamiloClimate change influences the distribution of mangroves towards tropical or temperate regions of the world. We hypothesized that Rhizophora species organized along complex spatial and temporal temperature and precipitation gradient. To determine the affinity of different mangroves with climatic parameters, the response of eight Rhizophora species to seven climatic parameters (i.e., annual mean temperature, annual precipitation, maximum temperature of warmest … …American Journal of Environmental Sciences, Vol. 13, Issue 5 · 5 Oct 2017 · 8,259 accessesView PDFCite