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Stability Analysis of a Closed-Loop Control for a Pulse Width Modulated DC Motor Drive
pulse width modulation (PWM) DC drive stability analysis
2009/7/28
In this paper, the effect of the variation of amplitude and the chopping period of a PWM signal on the stability of a closed-loop control for a DC motor drive is investigated. First, the entire system...
Growing and stability of gold nanoparticles and their functionalization by cysteine
gold sodium-citrate nanorods cysteine
2009/7/28
Gold nanoparticles in aqueous dispersion wereprepared using the trisodium citrate reduction
method to control the size of particles by changingthe concentration of HAuCl4. The average particlesize me...
Electron microscopy studies of the thermal stability of gold nanoparticle arrays
thermal stability gold nanoparticle arrays
2009/7/28
A series of monolayer protected gold nanoparticlecolloidal solutions have been prepared with averagesizes in the 2-15nm range. If a drop of such acolloidal suspension is deposited onto a Si3N4substrat...
Dimensional stability of wood modified by citric acid using different catalysts
dimensional stability of wood beech wood fir wood chemical modification citric acid NaH2PO2 NaH2PO4
2009/7/21
Small wooden samples of fir (Abies alba Mill.) and beech (Fagus sylvatica L.) were chemically modified by citric acid (CA) as non-formaldehyde cross-linking system reagent and cured by convection he...
Modified Atmosphere Packaging of Cut Welsh Onion : Effect of Micro-Perforated Polypropylene Film Packaging on Chemical Components and Quality Stability of the Vegetable
pre-cut Welsh onion micro-perforated film packaging modified atmosphere packaging
2009/7/8
The chemical components and quality stability of pre-cut Welsh onion wrapped in an unperforated or micro-perforated orientated polypropylene (OPP) film package were evaluated during storage at 10°C. T...
Stability of Enzyme Activity Immobilized on Glycosylated Egg White Beads and Some General Carriers in a Flow System
immobilized enzyme egg white glycosylation
2009/7/8
Ttypsin and α-amylase were immobilized on glycosylated egg white-beads by simple incubation of the beads in a solution of an enzyme for 24 h at 30°C. This process included no artificial chemical modif...
Effect of Polypropylene Film Packaging and Storage Temperature on Chemical Components and Quality Stability of Welsh Onion
welsh onion modified atmosphere packaging temperature
2009/7/7
Chemical components and quality of Welsh onion (Allium fistulosum L.) wrapped roughly or completely heat-sealed with orientated polypropylene (OPP) film were investigated during storage at 5 and 20°C....
Effect of Curdlan on Retort Stability of a Pork Meat Gel System
curdlan retort minced-pork gel trehalose
2009/7/7
Effect of curdlan with or without trehalose on retort stability of a minced-pork gel system was investigated. The addition of curdlan suppressed the deterioration of physical properties as well as the...
Changes in Oxidative Stability of Selected Bakery Products during Shelf Life
bakery foods oxidatif stability shelf life fatty acids
2009/6/18
In this research, selected bakery products that contain high amount of fat (>10%) were stored under ambient conditions until the end of shelf life. Changes in oxidative stability and fatty acid compos...
The Effect of Packaging Materials and Storage Condition on the Oxidative Stability of Refined Sunflower Oil
sunflower oil oxidative stability storage condition
2009/6/18
In this research, refined sunflower oil was packed at various packaging materials namely: yellow PET (polyethylene terephtalate) bottles, clear PET bottles, yellow HDPE (high density polyethylene) con...
Color Stability and Lipid Oxidation of a Dried Food Model to Which Carotenoids Have Been Added
carotenoids color stability dried food model
2009/6/18
The color stability of a dried food model added with carotenoids, represented by β-carotene and lutein, and the effects of these carotenoids on lipid oxidation were studied. Addition of both β-caroten...
Effect of Alcoholic Fermentation on the Stability of Purple Sweet Potato Anthocyanins
anthocyanin purple sweet potato alcoholic fermentation
2009/6/17
Anthocyanin pigments (AN) extracted and purified from purple sweet potatoes (Yamagawamurasaki and Kankei 55) were studied for stability during alcoholic fermentation. The fermentation was continued fo...
Investigation into the stability of driving an automobile on the road pavement with ruts
automobile dynamics 3D dynamics model roughness ruts interaction stability criterion numerical method
2010/11/1
The article reviews the stability of an automobile on the road pavement with ruts. The problems of road safety depend on many factors. One of those is the quality of the road surface. Big heavy lorrie...
Blending of Oils-Does it Improve the Quality and Storage Stability, an Experimental Approach on Soyabean and Palmolein Based Blends
Storage Stability Quality
2016/5/31
The present study of nutritional evaluation of two different oil blends were investigated using sesame oil as control. The blends selected were soyabean and palmolein with sesame in the ratios of 80:2...
Nutritional Analysis and Stability Studies of Some Natural and Synthetic Food Colourants
Nutritional Analysis Stability Studies
2016/5/31
The pH, titratable acidities, proximate and mineral compositions of two natural colourants and three synthetic colourants were determined. The pH and titratable acidity were determined over a period o...