จำนวน Repository ( 558 )

การศึกษาสมรรถภาพทางกายของนักกีฬาวอลเลย์บอล มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร
การศึกษาสมรรถภาพทางกายของนักกีฬาวอลเลย์บอล มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร

This research was intended to study the physical fitness body mass index and normal norms of the physical fitness of volleyball athletes in Rajamangala University of Technology Phra Nakhon academic year 2016. The population was 15 male and 15 female RMUTP volleyball players. The instruments employed in the research were the Physical Fitness Test of the Department of Physical Education which included front bending standing and jumping sitting-up for 30 seconds running and picking up objects for 50 meters and Harvard Step Test. The Statistics used for analyzing the data were percentage mean (xˉ) standard deviation (SD) and t-score. The research findings were as follows: 1. Age weight height and body mass index (BMI) of female volleyball players: the average age is 20 years the average weight is 56.87 kg the average height is 165.60 centimeters the average body mass index is 20.67 and the overall average physical fitness of female volleyball players was moderate. 2. Age weight height and body mass index (BMI) of male volleyball players: the average age is 22 years the average weight is 79.87 kg the average height is 180.53 centimeters the average BMI is 24.31 and the overall average physical fitness level of male volleyball players was moderate. 3. Normal norms of the physical fitness level of female volleyball players were as follows: 3.1 Front bending: very high level matches with the T-score above 61 high level at 55 - 60 moderate level at 45 - 54 low level at 40 - 44 and very low level below 39. 3.2 Standing and jumping: very high level matches with the T-score above 61 high level at 55 - 60 moderate level at 50 - 54 low level at 45 - 49 and very low level below 44. 3.3 Sitting-up for 30 seconds: very high level matches with the T-score above 60 high level at 55 - 59 moderate level at 45 - 54 low level at 40 - 44 and very low level below 39. 3.4 Running and Picking up objects: very high level matches with the T-score above 61 high level at 55 - 60 moderate level at 45 - 54 low level at 40 - 44 and very low level below 39. 3.5 Running for 50 meters: very high level matches with the T-score above 60 high level at 55 - 59 moderate level at 45 - 54 low level at 40 - 44 and very low level below 39. 3.6 Harvard Step Test: the Physical Fitness Level of female volleyball players was high level. Twelve players (80.00%) had the index of the physical fitness at high above 80; the other 3 players (20.00%) were at a moderate level that is the index of physical fitness was 50 - 80. 4. Normal norms of the physical fitness level of male volleyball players were as follows: 4.1 Front bending: very high level matches with the T-score above 61 high level at 55 - 60 moderate level at 45 - 54 low level at 40 - 44 and very low level below 39. 4.2 Standing and jumping: very high level matches with the T-score above 61 high level at 55 - 60 moderate level at 50 - 54 low level at 45 - 49 and very low level below 44. 4.3 Sitting-up for 30 seconds: very high level matches with the T-score above 60 high level at 55 - 59 moderate level at 45–54 low level at 40–44 and very low level below 39. 4.4 Running and Picking up objects: very high level matches with the T-score above 61 high level at 55 - 60 moderate level at 45 - 54 low level at 40 - 44 and very low level below 39. 4.5 Running for 50 meters: very high level matches with the T-score above 60 high level at 55 - 59 moderate level at 45 - 54 low level at 40 - 44 and very low level below 39. 4.6 Harvard Step Test: the Physical Fitness Level of male volleyball players was in moderate level. Ten players (66.67%) had the index of the physical fitness at 50-80; the other 5 players (33.33%) were at a very low level that is the index of physical fitness was below 50.

2564
Development and study on physical and sensory properties of dark chocolates fortified with anthocyanin from broken riceberry rice
Development and study on physical and sensory properties of dark chocolates fortified with anthocyanin from broken riceberry rice

Broken rice of Thai cross breed black rice Riceberry was an under-utilized agricultural by-product that contains high content of anthocyanins the multiple health benefits flavonoid. In this study these anthocyanins were used to develop healthy dark hocolates. The anthocyanin extract from the broken Riceberry rice was prepared into anthocyanin powder using freeze-drying technique in which maltodextrin was used as a carrier material. Healthy dark chocolates were prepared by replacing cocoa powder with anthocyanin powder by 5 10 and 15 g/g cocoa powder which respectively delivers DC5 DC10 and DC15 anthocyanin-fortified dark chocolate bars. The color analysis showed no blooming (undesired white color at the chocolate surface) in all chocolates. The increase the anthocyanin powder content significantly decreased the hardness of the dark chocolates (33.9-27.2 N). Total anthocyanin content (TAC) in the dark chocolates increased respectively as anthocyanin powder content increased. The health benefit of the anthocyanin-fortified dark chocolates was improved as the DPPH antioxidant activity of all treatments was 4-9% higher than that of the control DC0. Sensory evaluation revealed that DC10 received higher liking scores (6.4-7.5) than the DC0 indicating more consumer preference. The anthocyanin-fortified dark chocolate delivers an alternative strategy to improve the health property of chocolates. This application of anthocyanin from the broken Riceberry rice could help increase the value and the utilization of Thai agricultural by-product.

2564
ศึกษาสมบัติทางกายภาพของวัสดุเหลือใช้ทางการเกษตรเพื่องานหัตถอุตสาหกรรม ชุมชนบ้านถ้ำเสือ จังหวัดเพชรบุรี
ศึกษาสมบัติทางกายภาพของวัสดุเหลือใช้ทางการเกษตรเพื่องานหัตถอุตสาหกรรม ชุมชนบ้านถ้ำเสือ จังหวัดเพชรบุรี

This research 1) to study and analyze the relationship between the context of industrial handicraftsproperties of agricultural waste in community areas and 2) to agricultural waste to find physical properties and the industrial handicrafts for Bantumsua community Phetchaburi province. From primary data it was found the relationship of the community with the context of industrial crafts is a culture of agricultural wisdom from the collection of participatory research data. Found method and test the properties of paper pulp from agricultural waste where banana leaves = A bamboo leaves = B and pineapple leaves = C.Use the formula for quantifying the triangular grid the Trixie Blend Diagram to uses caustic sodium hydroxide 10-15% of dry weight. There are 7 test items 1 formula thin and thickness (a) according to the experimental standard referring to the community product standards plant fiber paper. For testing as follows: 1) standard average weight from the test of paper size 45x85 cm operation number list of the experimental formula test section 1.1) standard weight the overall average is equal to 220 grams/sqm. 1.2) part 2 tear strength which is strong = 3(10a) at 1962 mN the second strength = 1(8a) at 1907 mN and third = 6(13a) at 1467 mN. 1.3) Part 3 the overall moisture content of the paper the experiment found the humidity level is within the normal level at ± 10% which is complete and can be developed into a products or package. 2) Summary of physical properties the color characteristics of the paper according to provide color tones gray-brown and different beautiful suitable for the screen-printing and using large size rubber stamp. Process forming can produce use by semi-automatic heat setting at 140°C at time of 70 seconds per piece is suitable for further expansion to create industrial handicrafts for the community.

2564
การศึกษาพฤติกรรมการเผาไหม้ของเตาแก๊สแรงดันต่ำแบบเวอร์ติคอลพอร์ตด้วยวิธีพลศาสตร์ของไหลเชิงคำนวณ
การศึกษาพฤติกรรมการเผาไหม้ของเตาแก๊สแรงดันต่ำแบบเวอร์ติคอลพอร์ตด้วยวิธีพลศาสตร์ของไหลเชิงคำนวณ

The objective of this research is to study the combustion characteristic of a low-pressure vertical port burner using computational fluid dynamics (CFD). The simulation model was created using Fluent 6.3 in 3D-model of the same size of the burner. The CFD results were verified by measuring the temperature around the burner head and a vessel. Moreover the results of conventional vertical port burner having the swirl angle of 90o and the inclination angle of 90o (CB-S90I90) and two swirl port burners (SB) being SB-S90I13 and SB-S30I90 were compared. The temperatures obtained from CFD and experiments were similar which the error was less than 9%. From the CFD’s results the temperature and heat flux of the SB-S90I13 burner were higher than those of the CB-S90I90 burner. The maximum temperature and heat flux of SB-S90I13 burner were 1445 K and 5291 W/m2 respectively. It was implied that the combustion characteristic and heat transfer to the vessel of SB-S90I13 burner was better than that of CB-S90I90 burner. It was resulted that the thermal efficiency of SB-S90I13 burner was better than that of CB-S90I90 burner which was the percentage energy saving of 6.93%.

2564
ศึกษาแนวทางการออกแบบผลิตภัณฑ์ จากวัสดุเหลือใช้ทางการเกษตร กลุ่มแม่บ้านทอผ้าด้วยมือชุมชนเปรมฤทัย จังหวัดกรุงเทพมหานคร
ศึกษาแนวทางการออกแบบผลิตภัณฑ์ จากวัสดุเหลือใช้ทางการเกษตร กลุ่มแม่บ้านทอผ้าด้วยมือชุมชนเปรมฤทัย จังหวัดกรุงเทพมหานคร

This research is Study the product design guidelines from agricultural waste materials. Weaving Housewife Group Premruethai Community Bangkok And in order to use waste materials to develop to add value With the following steps. (1) Surveying types amount of agricultural waste materials. (2) Study the physical structure and chemical properties of plant fibers. (3) Study the methods of preparing suitable fibers for textile materials. (4) Develop and study the suitable mixture ratio of blended fiber yarn. (5) Manufacture of hand-woven fabrics from agricultural waste materials. (6) Design and prototype of products from hand-woven fabrics from fibers agricultural waste And study from testing methods comparing the opinions of users / users and evaluators Assessed in the test Bring the results to analyze find conclusions analyze and suggest the research results to study. And analyze find conclusions study product design guidelines from agricultural waste materials Weaving Housewife Group Premruethai Community Bangkok Expect It was found that different methods of fiber content were obtained. And found that the amount of fiber varies according to the size of the material Analysis results of all chemical composition of fibers Found that the moisture content of 1.82% Water content 1.00% ashes 0.7 % and the fiber has the same amount of 0.97 mg kg at a normal level that can be found in general plants And meet the standard criteria Physical property test results of fibers The shape according to the cross-section of the fiber Looks like an oval almost round shape with a noticeable lumen. For the strength it was found that the fibers had an average elongation at break of 7.54% the toughness equal to 57.32% the fiber size was 16.45 deniers and the strength was 26.85 grams. Yarn production results The most suitable hand-woven (plant fiber and cotton) is 60% plant fiber mixed with 40% cotton. The yarn has an average toughness or strength of 4.86 newtons and the yarn is equal to 2.8 Ne and the result of Testing fabric peach mixed fiber fabric with handicraft pattern Found that the weaving of the fabric on the surface of the fabric and / or some grain on the fabric. And there is no hair and grain on the fabric medium Woven fabric has a lack of testing value from the number of abrasion cycles in the range of 1780 - 2100 and the color fastness to washing is in the level of 4-5 (the color has slightly changed And there is no color leakage) By the test streaking of yarn streaks (Plant fiber yarn) has the strength to withstand the pulling force in the range 577.30 - 610.22 newton the tear strength is in the range 37.26 - 53.89 newton and the size change after washing is in the range - 3.77 to - 6.59 should be developed into various home decoration products such as tableware sets curtains shoes bags etc. The assessor has the opinion that the use The beauty of various products Satisfied (1) Beauty pattern (2) color (3) Durability (4) Suitable proportion (5) Career promotion to local communities The assessors have the highest level of satisfaction respectively.

2564