Triboelectric separation of wheat bran tissues: Influence of tribo‐material, water content, and particle size

2020 ◽  
Vol 43 (1) ◽  
Author(s):  
Zhongwei Chen ◽  
Qing Xia ◽  
Baoping Zha ◽  
Jun Sun ◽  
Bin Xu ◽  
...  
Keyword(s):  
Particle Size ◽  
Water Content ◽  
Wheat Bran

Mikrokapsul Ekstrak Bawang Tiwai sebagai Pengawet Pangan

2016 ◽  
Vol 9 (1) ◽  
pp. 73-79
Author(s):  
Suroto Hadi Saputra ◽  
Paluphy Eka Yustini
Keyword(s):  
Particle Size ◽  
Water Content ◽  
Rank Test ◽  
Water Particle ◽  
Range Test

Applications bawang tiwaiextractin the form ofpastaI have everdone in thefoodpreservativehaving troubleamong othersinsolubleandmixedwell withthe doughingredientsof food. One alternativeto overcome these problemsismicroencapsulated bawang tiwai extract.In this study, bulb bawangtiwaiextractedwithethanol 98%. Researchusinga completely randomized designfactorial3x2was repeated3times. The firstfactorcomposition ofthe coating materialwith 3 levels, the secondfactorwith 2degreetemperature.  Analysisof variance and dunken multiplerangetestfurthertestat5% confidence levelusing thesoftwareSPSSversion20. Results oftreatment ofthe coating materialcompositionandtemperatureas well as theinteractionsignificantly affected thephenol content, water content, solubilityin water, particle size andconcentration of ethanol. The results of analysisduncanmultiplerank testof showdifferentlevels ofphenol, water content, solubilityin water, particle size andconcentration of ethanol. The results showedthe highest valuein treatment(s1p1) phenolcontent of1.50%, (s2p1) lowwater content15.27%, (s1p1) watersoluble extracthighestlevel of87.45% (s2p1) 216.77smallestparticlesizeand(s2p1) lowethanollevels15, 17ppmABSTRAKAplikasi ekstrak bawang tiwai dalam bentuk pasta yang pernah dilakukan dalam pengawet pangan mengalami kesulitan antara lain tidak mudah larut dan tercampur secara baik dengan bahan adonan pangan. Salah satu alternatif untuk mengatasi permasalahan tersebut adalah mikroenkapsulasi ekstrak bawang tiwai.  Dalam penelitian ini, umbi bawang tiwai diekstrak dengan etanol 98%. Penelitian menggunakan rancangan acak lengkap faktorial 3 x 2 diulang 3 kali. Faktor pertama komposisi bahan penyalut dengan 3 taraf, faktor kedua suhu dengan 2 taraf. Hasil analisis sidik ragam dan uji lanjut dunken multiple range test pada tingkat kepercayaan 5% menggunakan soft ware SPSS versi 20. Analisa parameter pada penelitian ini antara lain kadar fenol, kadar air, kadar sari larut air dan ukuran partikel. Hasil perlakuan komposisi bahan penyalut dan suhu serta interaksi berpengaruh nyata terhadap kadar fenol, kadar air, kelarutan dalam air, ukuran partikel dan kadar etanol. Hasil analisisduncan multiple rank test (DMRT) menunjukkan berbeda nyata terhadap kadar fenol, kadar air, kelarutan dalam air, ukuran partikel dan kadar etanol. Hasil penelitian menunjukkan nilai tertinggi pada perlakuan (s1p1) kadar fenol 1,50 %, (s2p1) kadar air terendah 15,27%, (s1p1) kadar sari larut air tertinggi 87,45%(s2p1) ukuran partikel terkecil 216,77 dan (s2p1) kadar etanol terendah 15, 17 ppm. Kata kunci : bawang tiwa,  mikroenkapsulasi, maltodekstrin, na-kaseinat, pengawet pangan.

Use of an extruder for pre-mixing enhances xylanase action on wheat bran at low water content

2013 ◽  
Vol 149 ◽  
pp. 191-199 ◽  
Author(s):  
Outi Santala ◽  
Emilia Nordlund ◽  
Kaisa Poutanen
Keyword(s):  
Water Content ◽  
Wheat Bran

Corrigendum to

2018 ◽  
Vol 83 ◽  
pp. 511 ◽  
Author(s):  
Peng Guo ◽  
Jinglin Yu ◽  
Shujun Wang ◽  
Shuo Wang ◽  
Les Copeland
Keyword(s):  
Particle Size ◽  
Physicochemical Properties ◽  
Durum Wheat ◽  
Water Content ◽  
Starch Digestibility ◽  
In Vitro Starch Digestibility ◽  
Wheat Grains

Statistical Modelling of the Particle Size Composition of an Alumina Matrix for No-Cement Self-Flowing Refractory Castables

2006 ◽  
Vol 514-516 ◽  
pp. 604-608 ◽  
Author(s):  
Abílio P. Silva ◽  
Ana M. Segadães ◽  
Tessaleno C. Devezas
Keyword(s):  
Particle Size ◽  
Water Content ◽  
Raw Materials ◽  
Size Composition ◽  
Statistical Modelling ◽  
Matrix Composition ◽  
Mechanical Resistance ◽  
Particle Size Composition ◽  
Refractory Castables ◽  
System Properties

In the processing of any particulate system (including refractory castables), the finer sized particle fraction (matrix or filler) is mostly responsible for the final system properties. Alumina fine powders were used in this work as raw materials, namely two tabular alumina fractions (–500 mesh and –230 mesh) and a commercial reactive alumina. Statistical modelling and the Response Surface Methodology (Statistica, Mixtures Designs and Triangular Surfaces module) were used to optimise the particle size composition of the three-component mixtures leading to matrix maximum flowability. The mixing methodology, aimed at minimising the water content, was kept constant. No-cement alumina castables produced with the various fine size powder mixtures, were used to prepare test-pieces. After drying and sintering, their mechanical resistance (MoR), density, porosity, water absorption, thermal shock behaviour and microstructure were evaluated. The results obtained evidenced the relevance of variables such as the water content per unit specific surface area, needed to reach the self-flow “turning point”, and validated the statistical optimisation method used. Moreover those results showed the existence of a matrix composition range, which favours the formation of a flow-bed that enables the aggregate self-flow.

scholarly journals Screening the Main Factors Affecting the Wear of the Scraper Conveyor Chute Using the Plackett–Burman Method

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Rui Xia ◽  
Bo Li ◽  
Xuewen Wang ◽  
Zhaojian Yang ◽  
Liping Liu
Keyword(s):  
Particle Size ◽  
Water Content ◽  
Coal Particle ◽  
Normal Load ◽  
Influence Factors ◽  
Optical Microscope ◽  
Operating Conditions ◽  
Wear Loss ◽  
Regression Equations ◽  
Scraper Conveyor

The wear of scraper conveyor chute causes both significant economic and environmental losses by shortening the service life. The life of the chute under coal abrasive wear situations is primarily decided by operating conditions and the materials properties. The comprehensive analysis of the influence factors had not been studied before. In this paper, the Plackett-Burman design (PBD) method was used to screen the main influence factors and a regression equation was developed to predict the wear loss. The steel was tested on a modified pin-on-disk apparatus in which coal abrasive was filled in the disk. The influence factors included water content, gangue content, coal particle size, Hardgrove Grindability-Index (HGI) of the coal, normal load, and scraper chain speed. The results of the investigation suggested that the significance of water content, normal load, and gangue content on wear loss was relatively higher than the HGI of coal, scraper chain speed, and coal particle size. The wear loss increased with the increase of water content, gangue content, normal load, and coal particle size while it decreased as increase in HGI of the coal and scraper chain speed. Based on the significance of the parameters, the regression equations were derived and verified further with a number of test cases. Optical microscope studies revealed the main wear mechanism of the chute was mainly micro-cutting and corrosive wear and accompanied by fatigue fracture.

scholarly journals Normalized Hail Particle Size Distributions from the T-28 Storm-Penetrating Aircraft

2019 ◽  
Vol 58 (2) ◽  
pp. 231-245 ◽  
Author(s):  
Paul R. Field ◽  
Andrew J. Heymsfield ◽  
Andrew G. Detwiler ◽  
Jonathan M. Wilkinson
Keyword(s):  
Particle Size ◽  
Water Content ◽  
Size Distribution ◽  
Optical Probe ◽  
Particle Size Distributions ◽  
South Dakota School ◽  
Significant Damage ◽  
In Situ Observations ◽  
Cloud Evolution

AbstractHail and graupel are linked to lightning production and are important components of cloud evolution. Hail can also cause significant damage when it precipitates to the surface. The accurate prediction of the amount and location of hail and graupel and the effects on the other hydrometeor species depends upon the size distribution assumed. Here, we use ~310 km of in situ observations from flights of the South Dakota School of Mines and Technology T-28 storm-penetrating aircraft to constrain the representation of the particle size distribution (PSD) of hail. The maximum ~1-km hail water content encountered was 9 g m−3. Optical probe PSD measurements are normalized using two-moment normalization relations to obtain an underlying exponential shape. By linking the two normalizing moments through a power law, a parameterization of the hail PSD is provided based on the hail water content only. Preliminary numerical weather simulations indicate that the new parameterization produces increased radar reflectivity relative to commonly used PSD representations.

A mathematical model for variation in water-retention curves among sandy soils

2007 ◽  
Vol 19 (4) ◽  
pp. 427-436 ◽  
Author(s):  
H.W. Hunt ◽  
A.M. Treonis ◽  
D.H. Wall ◽  
R.A. Virginia
Keyword(s):  
Particle Size ◽  
Water Content ◽  
Bulk Density ◽  
Water Retention ◽  
Organic Matter Content ◽  
Sandy Soils ◽  
Sand Particle ◽  
Model Parameters ◽  
Calibration Data ◽  
Matric Potential

AbstractEquations were developed to predict soil matric potential as a function of soil water content, texture and bulk density in sandy soils. The equations were based on the additivity hypothesis - that water-retention of a whole soil depends on the proportions of several particle size fractions, each with fixed water-retention characteristics. The new model is an advancement over previously published models in that it embodies three basic properties of water-retention curves: a) matric potential is zero at saturation water content, b) matric potential approaches -∞ as water content approaches zero, and c) volumetric water content in dry soil is proportional to bulk density. Values of model parameters were taken from the literature, or estimated by fitting model predictions to data for sandy soils with low organic matter content. Most of the variation in water-release curves in the calibration data was explained by texture, with negligible effects of bulk density and sand particle size. The model predicted that variation in clay content among soils within the sand and loamy sand textural classes had substantial effects on water-retention curves. An understanding of how variation in texture among sandy soils contributes to matric potential is necessary for interpreting biological activity in arid environments.

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