จำนวน Repository ( 1174 )
Silk Degumming with Dried Latex of Carica Papaya Linn
Degumming process is a fundamental finishing process for silk yarn and silk fabric. The main objective is scouring the substrate such as silk gum (sericin) wax and some impurities from silk fiber. The principle of degumming process is breaking the peptide linkage of amino acid in sericin structure into a small molecule which is soluble in water. The hydrolysis reaction performed by acid and alkaline but they have a big problem on the surface area of silk. Proteolytic enzyme be used to solve this problem but it has some disvantages such as it was using a specific condition and expensive. For this reason this research chooses papain enzyme form dried latex of Carica payapa Linn. to degum the raw silk. The efficiency of degumming process was evaluated by determination of tensile strength and staining test with direct dyes (C.I. Direct Red 80). The result was revealed; the appropriate conditions for silk degumming with dried Carica payapa Linn.’s latex be recommended as follows: the amount of dried latex solution of 4 % owf at 75 degree Celsius for 30 minutes in this condition was not harm to strength and fiber surface. The degummed fibers still had lustrous soft and smooth surface.
The Study of Nutrition Knowledge, Consumption Behavior, and Nutritional Status of Kluaynamthai Bangkok Personnel
This research aimed to study the qualification of Kluaynamthai Hospital’s (KLH) personnel in three aspects; nutrition knowledge consuming behavior and nutritional status. The research also studied on the relationship of the three aspects. The Stratified Random Sample method was used. Questionnaires and the 2008 annual check up information were used to gather the data from 236 samples. The data were analyzed by using frequency percentile mean and standard deviation. The analysis of test score was done by a statistical method (Chi-square) with a 0.01-0.05 significant level. The study revealed that 65.68 % of Kluaynamthai Hospital’s personnel had excellent nutrition knowledge and 26.69 % 6.78% 0.42% and 0.42% had nutrition knowledge at good average meet criteria and under criteria respectively. The average of 2.91 of the group had good consuming behavior and the frequency of good consuming behavior at 2.69 or 91.95 % of the group’s consuming behavior was less affected by mass media. 49.58% of the group had normal nutrition status while 35.59% and 14.58 % had over nutrition and below nutritional status respectively. The study of the relationship between the nutrition knowledge and the consuming behavior revealed that there was the significant relationship between the two variables at significant level of 0.05.
Study of Ozone Generator with Electric Fields Distribution on Water Surface
This paper proposes a study of an Ozone generator. The generator under the study is designed using the electrode with uniform field. The electrode is constructed in the plane shape with positive potential. The transformer oil is used as insulating materials to prevent discharges around the electrode discharges in the air void depends on the size the types of dielectrics and level of applied voltage. Between the electrode and the air void there is acyclic dielectric. The stainless electrode with water is used as a ground potential. The breakdown depends on the electric field intensity. It is found that there is sufficient amount of ozone due to the ionization Development and design ozone generator this research electric field intensity on the water type and this can be used as a principle to construct a new type of ozone generator.
Finned-Tube Condenser Cleaner Machine
Now a day the mostly air condition are use the air for reducing the temperature at the condenser unit. Moreover many dusts are adhering in area of fin coil. From this reason the heart reduction efficiency is decreased and increasing the energy consumption. Thus the aim of this research is to design the finned-tube condenser unit cleaner machine for increasing the heart reduction efficiency. From the results of experiment it found that the finned-tube condenser cleaner machine is desirable when comparing with the performance before used. By the original performance the refrigeration effect coefficient of performance (C.O.P) and energy efficiency ratio (EER) is 34179 Btu/hr 2.62 and 8.9 Btu/hr.Watt. On the other hand the refrigeration effect (C.O.P) and (EER) is 39766 Btu/hr 3.12 and 10.7 Btu/hr.Watt respectively when the condenser unit cleaner machine is used. Based on this condition the value of the refrigeration effect and (EER) are increase to 16.35% and 19.19% respectively. Thus the heart reduction in condensing unit can be aided the performance and prolong the life time of air condition by depending on the cleaning of condensing unit.
Using Condensate Water to Reduce Heat for Finned-Tube Condenser of Air Conditioning System
Now a day the mostly air condition are use vapor compression refrigeration system in which R-22 refrigerant is used as a working substance. From the results of study it found that the quantity of water vapor or moisture in the air is condensed with in the fan coil unit while through out the evaporator. The fluid after condense is called condensed water. By this process the quantity of condensed water is increases when the air condition is used in the long time. To increase the utility the condensed water is recovered for the heart reduction in the finned-tube condenser. The experiment is consist of two conditions by using the air and condensed water to heart reduction. But in case of condensed water the pressure operation is controlled at 280 and 260 Psig respectively. The results of experiment shown the refrigeration effect coefficient of performance (C.O.P) and energy efficiency ratio (EER) is 39675 Btu/hr 3.01 and 10.3 Btu/hr.Watt respectively with the air is used. At the pressure operation 280 Psig refrigeration effect (C.O.P) and (EER) is 44212 Btu/hr 3.38 and 11.5 Btu/hr.Watt respectively and 49856 Btu/hr 3.99 and 13.6 Btu/hr.Watt at pressure operation 260 Psig. Furthermore the capacity of condenser is increases to 11.43% and 25.6% and also the refrigerant efficient is increases to 12.43% and 32.43% at the pressure operation 280 and 260 Psig. Thus the parameter of the energy efficiency ratio depends on the capacity of condenser working substance temperature (pressure operation) and air surrounding temperature.