จำนวน Repository ( 3611 )
ลักษณะวัสดุผสมซีเมนต์เพสต์กับเถ้าเส้นใยผลตาลโตนดใส่ท่อนาโนคาร์บอนผนังชั้นเดียวชนิดสั้นผ่านการปรับปรุงผิวภายนอกด้วยกระบวนการชุบผิวโดยไม่ใช้ไฟฟ้า
This research was resulted of the characterization of cement paste composites (CPC) blended with palmyra fiber ash and surface-treated on short SWNT prepared by an electroless plating process. The cement paste composites included cement 270 meshes of palmyra fiber ash and short SWNT. The design of experiment was divided into 3 conditions namely uncuring 28 and 56 days in distilled water. The properties of CPC were carried out in chemical composition physical mechanical mineral phase microstructure and statistical analysis. It was found that in the chemical compositions an amount of silicon dioxide aluminium oxide and ferric oxide were 51.53% which was rated in class C. The bulk densities of CPC series between PFA10 (C) and PFA5AgSWNT0.01 (G) cured 56-day distilled water were an increased 38%. Then the highest specific electrical resistivity of CPC series PFA5OSWNT0.03 (F) cured 56-day distilled water was 1.14±0.31 mega-ohm.mm. The highest compressive strength of CPC series PFA5AgSWNT0.01 (G) cured at 28-day distilled water was 25.45±2.00 MPa compared with the OPC (A) was an increased 5%. Which the bulk densities of CPC series between PFA10 (C) and PFA5AgSWNT0.01 (G) were statistical analyzed the mostly cured at significant difference α = 0.05. In addition CPC series PFA5AgSWNT0.01 (G) mainly contained calcite portlandite quartz dolomite and ettringite were caused increasing compressive strength. And the SEM microphotograph were also displayed the calcium silicate hydrate portlandite and ettringite. Consequently the PFA was used to ability pozzolanic material using for lightweight concrete of CPC.
การพัฒนาไอศกรีมนมเสริมอกไก่
Milk ice cream is the one of most popular dessert in many countries. But the most milk ice cream contains high amounts of sugar and fat. It is for this reason that consumers who exercise regularly concern about the impact of ice cream consumption on health and have led to a considerable rise in high protein ice cream demand for this consumer group. Therefore the objective of this study was to develop the milk ice cream with high protein from chicken breast by varying chicken breast in milk ice cream at 5 10 and 15% by total weight. The result showed that 10 % chicken breast ice cream had the best physical and sensory properties. The viscosity overrun texture and melting rate of the developed formula were 89.05 cps 108.05% 34584 g force and 23% respectively. The lightness (L*) redness (a*) and yellowness (b*) value were 87.10 5.08 and 20.54 respectively.
การประเมินคุณภาพทางด้านฉลาก ด้านกายภาพ ค่าความเป็นกรด-ด่าง และทางจุลชีววิทยาของน้ำดื่มบรรจุขวดที่จำหน่ายในเขตเทศบาลนครอุบลราชธานี ประเทศไทย
. In this study examination of label information physical and microbiological qualities was performed in 30 clear-plastic and 3 opaque-plastic bottled drinking water products distributed in city municipality of Ubon Ratchathani. Results showed that 12 clear-plastic (36%) and 3 opaque-plastic (9%) bottled drinking water samples had no expiry date on the product labels which were discordant to the criteria for drinking water in sealed containers imposed by the Ministry of Public Health of Thailand no. 383 (2017). Odorless appearances of all drinking water samples were observed. Values of pH in 4 clear-plastic (12%) and 3 opaque-plastic (9%) bottled drinking water samples were in the ranges of 6.21±0.00–6.29±0.03 which were below the allowable limit (pH 6.5–8.5). All bottled drinking water products contained numbers of total coliform and fecal coliform bacteria less than 2 MPN/100 mL and were devoid of E. coli. Therefore based on the quality of clear-plastic and opaqueplastic bottled drinking water products distributed in city municipality of Ubon Ratchathani 1 5 samples (45%) did not meet standard for drinking water in sealed containers declared by the Ministry of Public Health of Thailand (1981 and 2017) owing to no expiry date labeled on the products and pH value below 6.5.
การดูดซับสีย้อมเมทิลีนบลูบนถ่านกัมมันต์ที่เตรียมจากกากน้ำตาลโดยวิธีการกระตุ้นด้วยสารเคมีและไมโครเวฟ
This research aims to produce activated carbon from molasses via a chemical activation process with potassium hydroxide (KOH) and a microwave heating process which consumes less energy and provides more rapid and uniform heat distribution than a conventional heating. The obtained activated carbon was then characterized with BET SEM and FTIR. It exhibited a large specific surface area of 1631 m2/g and a total pore volume of 1.124 cm3/g consisting of mesopore and micropore. In addition the active functional groups were also found on the surface of the activated carbon. Thus it was brought for the adsorption test with methylene blue. It was found that the adsorption capacity of the activated carbon increased with time and reached the equilibrium within 8 hours. The adsorption data of the activated carbon were corresponded to Langmuir isotherm with the highest adsorption capacity of 370.37 mg/g. The adsorption kinetic of the activated carbon exhibited pseudo-second order reaction suggesting to the chemisorption phenomenon. From the thermodynamic study it revealed that the adsorption process were endothermic and spontaneous reactions.
การเปลี่ยนแปลงองค์กรที่ส่งผลต่อพฤติกรรมการทำงานของบุคลากรองค์กรไม่แสวงหากำไร
This study purpose was to investigate the changes affecting the working behavior of non-profit organization personnel. The population used in this study was 64106 non-profit organization personnel: Foundations and associations. The data was collected using a questionnaire from 203 non-profit organization personnel. Statistical multiple regression analysis was used to test the study hypothesis. The study results revealed that there is a correlation between organizational changes including the attitude change change in corporate culture technology change and changes in organizational structure and the working behavior of the personnel of the non-profit organization as a whole including the aspect of helping others consideration for others patience sense of duty and cooperation with the statistical significance at 0.01 level.