จำนวน Repository ( 160 )

เครื่องกะเทาะกะลาแมคคาเดเมียแบบหมุนเหวี่ยงเชิงมุม
เครื่องกะเทาะกะลาแมคคาเดเมียแบบหมุนเหวี่ยงเชิงมุม

This research aims to design and construct small-scale angular rotary macadamia nut cracker machine using angular rotary striking mechanism. The proposed machine can crack 3 sizes of macadamia nuts - 17-22 mm 23-28 mm and 29-34 mm diameter with no need for separation size before feeding into the machine. Results of the experiment showed that the proposed angular rotary macadamia nut cracker machine could be used exactly as designed. Its average efficiency in separating sizes before cracking was 83% with overall productivity of 7.75 kilograms per hours. With regard to cracking process it was found that weight of the cracked macadamia nut was 29.75% of the whole macadamia fruit. The other 70.25% was weight of the shell. Furthermore it was also found that regarding quality of the cracked macadamia nuts the whole-nut quality was 39% the half-nut quality was 44% and the broken- nut quality was 17% respectively.

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การศึกษามาตรฐานการจัดการโซ่อุปทาน การกระจายสินค้าและการตลาดของอุตสาหกรรมเนื้อสัตว์แปรรูปฮาลาลในประเทศไทยเพื่อรองรับการเปิดประชาคมเศรษฐกิจอาเซียน
การศึกษามาตรฐานการจัดการโซ่อุปทาน การกระจายสินค้าและการตลาดของอุตสาหกรรมเนื้อสัตว์แปรรูปฮาลาลในประเทศไทยเพื่อรองรับการเปิดประชาคมเศรษฐกิจอาเซียน

The research on the process of supply chain management standard goods distribution and marketing of the meat processing industry in Thailand to support the ASEAN Economic Community was aimed (1) the process of supply chain management standards goods distribution and marketing of the meat processing industry in Thailand to support the ASEAN Economic Community and (2) to determine the consistency of a causal model that influenced the process of supply chain management standards goods distribution and marketing of the meat processing industry in Thailand to support the ASEAN Economic Community with the empirical data. The variables used in this study were the independent variables including the availability and the readiness of the entrepreneurs. The mediator variables were the raw material transportation management and safety standard. The dependent variable was the supply chain management standard goods distribution and marketing of the meat processing industry in Thailand to support the ASEAN Economic Community. The researchers used a mixed method of qualitative and quantitative study. Questionnaires were used to collect empirical data from 350 entrepreneurs of the meat processing industry in Thailand. The statistical methods used to analyze data were the frequency percentage mean standard deviation and the analysis on the structural equation model and qualitative research methodology. The results revealed that the model was well consistent with the empirical data. The Chi – Square (2) value was 288.294 at the degrees of freedom (df) of 256 with the probability p-value equal to 0.081. The chi - square relative (2/df) was 1.127 with index of harmony (GFI) equal to 0.975 AGFI = 0.951 RMSEA = 0.017 The results showed that (1) the availability of resources had a positive influence on the transportation of raw materials (2) the availability of resources had a positive influence on safety standards (3) the entrepreneur readiness had a positive influence on the transportation of raw materials (4) the entrepreneur readiness had a positive influence on safety standards (5) the transportation of raw materials had a positive influence on safety standards (6) the transportation of raw materials had a positive influence on the supply chain management distribution and marketing and (7) safety standards had a positive influence on the supply chain management distribution and marketing of halal meat processing industry in Thailand to support the ASEAN Economic Community. The findings suggested that the meat processing industry should focus on the supply chain management distribution and marketing by promoting personnel deeper understanding to develop halal food. The government should also support the halal food industry as well

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การเตรียมและศึกษาสมบัติทางโครงสร้างและแม่เหล็กของอนุภาคคอมโพสิตระดับนาโนเมตรของไฮดรอกซีอะพาไทต์และซิงก์เฟอไรท์ เพื่อประยุกต์ใช้ในการรักษามะเร็งในอนาคต
การเตรียมและศึกษาสมบัติทางโครงสร้างและแม่เหล็กของอนุภาคคอมโพสิตระดับนาโนเมตรของไฮดรอกซีอะพาไทต์และซิงก์เฟอไรท์ เพื่อประยุกต์ใช้ในการรักษามะเร็งในอนาคต

A promising composite of zinc ferrite (ZnFe2O4) and bioactive hydroxyapatite (Ca10(PO4)6(OH)2 ;HAp) has expected to potential for future bone reinforcing formation. In present study zinc ferrite and hydroxyapatite composite was prepared by solid state reaction route for easier control of structural and magnetic characteristics and with low cost. Hydroxyapatite powder was synthesized by precipitation method from chicken eggshell. Mixed powders with varying ZnFe2O4/HAp weight ratios from 2-10 wt% were milled together and uniaxially pressed and then sintered at 1200 oC for 3 hours. The XRD results showing no other phases of composite with only HAp and ZnFe2O4 phases were identified indicating high stability of HAp property. Phase fractions of ZnFe2O4 were found to increase from 10.8 to 18.73 wt% with increasing content of ZnFe2O4. FT-IR results of ZnFe2O4/HAp composite were only revealed vibration bands of standard HAp phase. This may due to the overlapping of the ZnFe2O4 vibrational bands with HAp bands. However their intense variations observed in HAp vibrational bands indicated the interaction between ZnFe2O4 and HAp. The surface morphology of these ZnFe2O4/HAp composite exhibited primary grain in nano scale with enhanced pore structure and Interconnectivity when ZnFe2O4 weight ratios increased; indicating high surface area for cell attachment and better good cell growth and differentiation. The higher saturation magnetization as well as higher super paramagnetic behavior could be easily altered by increasing ZnFe2O4 content in the composite.

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ระบบการจัดการความปลอดภัยในการทำงานก่อสร้างบนที่สูง
ระบบการจัดการความปลอดภัยในการทำงานก่อสร้างบนที่สูง

The purpose of this research is to study the construction safety system for working at height. The safety system for working at height in this research is predetermined by department of labour protection and welfare and safety and health at work promotion association (Thailand). The safety system composed of (1) safety policy (2) safety organization (3) prevention measure (4) risk analysis (5) training (6) safety inspection (7) accident report and (8) emergency planning.

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การประเมินค่าการปนเปื้อนของฝุ่นละอองขนาดไม่เกิน 10 ไมโครเมตร (PM10) ในมหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร ศูนย์พระนครเหนือ
การประเมินค่าการปนเปื้อนของฝุ่นละอองขนาดไม่เกิน 10 ไมโครเมตร (PM10) ในมหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร ศูนย์พระนครเหนือ

For this work PM10 were collected from 7 stations within the area of North Phra Nakhon campus Rajamangala University of Technology Phra Nakhon Thailand. The samples were collected within 24 hours from January to April 2015. The result shows that the concentrations of PM10 values are in the range of 0.06 - 0.16 mg/m3 and average PM10 of 0.09 mg/m3. The maximum PM10 were found in front of the university. The comparison of maximum PM10 with the standard value of Pollution Control Department (PCD) was slightly over but did not affect human health.

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