จำนวน Repository ( 17 )
ผลิตภัณฑ์น้ำเม่าพร้อมดื่มผสมวุ้นน้ำมะพร้าวบรรจุขวดแก้ว
Nata de coco rich in high dietary cellulose microfiber of low calories and thus suitable to be promoted as healthy drink is derived from bacterial fermentation of coconut water (an agricultural by-product). In this study the optimal amount of nata de coco to be added to mao juice was investigated. Nata de coco was produced by using Acetobacter xylinum TISTR 86 cultured at 30oC for 15 days in a plastic box containing culture medium which was composed of 92.5% coconut juice 0.5% ammonium sulfate 5.0% sucrose and 2.0% vinegar. Hedonic scale (1-9 point) sensory evaluation was used to select the optimal ratio of nata de coco from the 3 ratios of 5 10 and 15% to be added to mao juice. Based on taste and overall liking the most favorable mixture is to add nata de coco of 10% to mao juice. Finally the chemical physical and microorganism properties of mao juice with nata de coco in a 180 ml clear-glass bottle were measured after it was stored at room temperature for 1 month. This mixture product was found to beneficially contain fiber two times the amount of that of sole mao juice. The result suggests that these variable parameters of mixture product were accepted base on the Thai Community Product Standard (486/2547).
การศึกษาแก้วเซรามิกชีวภาพที่ประกอบด้วยผลึกเฟอร์โรแมกเนติกระดับนาโนจากระบบที่มีและไม่มีซิลิกาเป็นองค์ประกอบด้วยวิธีอินคอเปอเรชัน
The aim of this work was to study the magnetic properties of magnetic glass-ceramics with composition system SiO2-CaO-Na2O-P2O5-BaO-Fe2O3. The magnetic glass–ceramics were prepared by conventional melting at 1300oC for 2 h of the coprecipitation derived starting products and heat treated at different temperatures. The structure and microstructure of the samples were characterized by X-ray diffraction energy dispersive X-ray analysis (EDXA) and scanning electron microscopy. The magnetic measurement showed that the samples which contained barium ferrite exhibited magnetic behavior which is similar to soft magnetic materials. Finally the samples were soaked in simulated body fluid (SBF) for 14 days. The apatite was found to form on the surface layer of glass-ceramics and it increases with the barium ferrite content was increased.
การเตรียมและการวิเคราะห์แก้วและแก้วเซรามิกชีวภาพจากระบบแคลเซียมโซเดียมฟอสเฟต
The aim of this work was to study the magnetic properties of magnetic glassceramics with composition system CaO-Na2O-P2O5-BaO-Fe2O3. The magnetic glass– ceramics were prepared by conventional melting at 1300oC for 2 h of the coprecipitation derived starting products and heat treated at different temperatures. The structure and microstructure of the samples were characterized by X-ray diffraction energy dispersive X-ray analysis (EDXA) and scanning electron microscopy. The magnetic measurement showed that the samples which contained barium ferrite exhibited magnetic behavior which is similar to soft magnetic materials. Finally the samples were soaked in simulated body fluid (SBF) for 14 days. The apatite was found to form on the surface layer of glass-ceramics and it increases with the barium ferrite content was increased.
Effect of glass cullet on compressive strength and abrasion resistance of terrazzo floor tile
This research was aimed to study the compressive strength and the abrasion resistance of Terrazzo floor which used glass cullet as aggregate. The mix proportion of Terrazzo was 1 : 2.5 (white cement : chipped stone) by weight. The weight percentages of replacement of chipped stone by glass cullet were 0 10 25 50 75 and 100% by weight of aggregate. The compressive strength and abrasion resistance of Terrazzo specimens were measured at 7 14 and 28 days. The results indicated that the compressive strength of mixtures with glass cullet of 0 10 25 50 75 and 100% were 581.11 540.81 534.83 480.94 435.42 and 343.71 kg/cm2 respectively. It showed that the compressive strength decreased with the increase of glass cullet content. The abrasion test of Terrazzo specimens showed that at low glass cullet content (10-50%) the abrasion resistance increased with the increase of glass cullet content. The mixtures with glass cullet of 75 and 100% have abrasion resistance nearly the same as the mixture without glass cullet
การพยากรณ์กำลังรับแรงกระแทกของปอซโซลานคอนกรีตด้วยแบบจาลองฟัซซีลอจิก
This objective research to study the possibility of used properties pozzolan material for concrete cement the ternary blend by fly ash metakaolin and silica powder by replacement cement partially on the strength for Flexural and impact by replace Portland cement. Consideration of concrete by varying the ratio there are three values are (w/d) of 0.38 0.55 and 0.8 follow on standards ACI 211.1-91 and variable amounts of replacement cement some. The ternary blend of the fly ash metakaolin and silica powder of percentage 0 15 20 and 25 and by weight of cement. and the control specimens (w/b) without contain fly ash kaolin and silica powder the slump test in the range of 3-5 cm and the use super plasticizer to control the slump test of concrete. By casting specimens of cylindrical diameter 10x20 cm cube 10x10x10 cm and the beam size 10x10x35 cm after curing 28 days and test compressive tensile and flexural strength of concrete all specimens The results showed that The increase will help improve the quality of the concrete physical properties 35 percent up on the cement with clay 15 percent will have the strength to most of the compression is reduced. The increased of compressive and Tension strength as the percentage decrease when replacing cement with fly ash 35 percent up on replacing cement with clay to pull the maximum percentage of 10 bending when replacing cement with clay at a ratio of 10 percent is paid bending. The maximum value of fly ash the flexural increased replace cement in the ratio of 50 per cent are increased the concrete with the most and the last place of cement. As a result of the porosity of the concrete with lower amounts of tightness concrete has increased. Fuzzy logic model is presented for predicting the strength for Flexural and impact by replace Portland cement. The result of the study from experimental case the graph of membership function are present (low medium and high). The results showed that the model Fuzzy Logic. Can be used fuzzy logics to predict as well