จำนวน Repository ( 3611 )

The Marketing Mix Factors Application for Decision Making to Select Wedding Consult Services at Bangkoknoi District in Bangkok Metropolitan
The Marketing Mix Factors Application for Decision Making to Select Wedding Consult Services at Bangkoknoi District in Bangkok Metropolitan

The objectives of this study are to study the usage of the marketing mix factors application for decision making to select wedding consult services at Bangkoknoi district in Bangkok metropolistan to study the decision behavior when selecting wedding consult services as well as comparison of the marketing mix factors in selecting wedding consult services classified as per- individual factor. The result showed that the product factor was highly important as proper-services-as-required was emphasized. The price factor was highly important as clearly displayed-price was emphasized. The place factor was highly important as ease-of-traveling was emphasized. The promotion factor was considered highly important as special-discount from normal rate was emphasized. The result from hypotheses testing showed that the sample group with different age education average income and career tend to use the marketing mix factors in selecting wedding consult services differently with a significant statistical difference of 0.05 while the sample group with different gender tend to use the marketing mix factors in selecting wedding consult services indifferently with a non-significant statistical difference of 0.05.

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Test melt flow index spiral test standard  ASTM : D 3123-94
Test melt flow index spiral test standard ASTM : D 3123-94

This research aims to Test Melt Flow Index Spiral Test according to Standard ASTM : D 3123-94. To compare with this Standard the Melt Flow Index Spiral Test of HDPE PP and ABS which determined by the manufacturer was tested in various sizes. The test and the results were as follow:

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Factors Affecting on Social Adjustment of Industrial Education Faculty Students
Factors Affecting on Social Adjustment of Industrial Education Faculty Students

This research was a survey research. The objective was to study the factors of social adjustment of students of the Faculty of the Industrial Education Rajamangala University of Technology Phra Nakhon. The data analysis based on statistic data the average percentage standard deviation t-test and analysis of variance. The results can be summarized as follows: the factors of social adjustment of Industrial Education students are at the moderate level. The results of factor analysis are 1) Students with different genders and age have the overall indifferent social adjustment ability. 2) Students who graduated from different field of study have the overall different social adjustment ability . The students who graduated from vocational certificate program have the overall higher social adjustment ability than students who graduated from general education program. 3) Students with different years of birth and different family status in society have the overall indifferent social adjustment ability. 4) Students with their parents in different occupation and different average-income-per-month families have the indifferent overall social adjustment ability and 5) Students with different family characteristics have the overall different social adjustment ability.

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การนำน้ำคอนเคนเซดมาระบายความร้อนให้กับแผงคอนเดนเซอร์ของระบบปรับอากาศ
การนำน้ำคอนเคนเซดมาระบายความร้อนให้กับแผงคอนเดนเซอร์ของระบบปรับอากาศ

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 watcr the pressure openation is controlled at 280 and 260 Psig respectively. The results of efficicncy 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 respectivecly 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 pararneter of energy efficiency ratio depends on the capacity of condenser working substance temperature (pressure operation) and air surrounding tcmperature.

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การพัฒนาเทคโนโลยีการผลิต ผลิตภัณฑ์โลหะผงทังสเตนคาร์ไบด์เพื่อการใช้งานในอุตสาหกรรมอย่างยั่งยืน
การพัฒนาเทคโนโลยีการผลิต ผลิตภัณฑ์โลหะผงทังสเตนคาร์ไบด์เพื่อการใช้งานในอุตสาหกรรมอย่างยั่งยืน

This study is meant to help develops better facilities for Tungsten Carbide powder production process. The 10 kg-capacity machine used was able to produce 85 -95.49 percent purity Tungsten carbide powder. When measured most of the particle sizes and distribution between 0.03-350.00 !lm. which are considered large sized. More than that those tungsten carbide particles are contaminated by other kinds of metal especially Cobalt binder. We have tried to improve the Tungsten Carbide manufacturing processes by combining more steps including ball milling drying and screening. After 24-hours ball milling process the result showed that we were able to produce smaller Tungsten Carbide paliicles sizing from 0.025 to 30.00 ~lm. The obtained particles are also rounder and with 99.50 percent purity. They are also easier to grade. The Tungsten Carbide manufacturing technology yet needs a further development to eventually produce the desired hard material.

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