Rajamangala University of Technology Phra Nakhon
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การเปรียบเทียบความสามารถการดูดซับพลังงานจากวัสดุ PZT จากการจำลองการทำงานเครื่องจักร
Get PDFโครงงานพิเศษ (วท.บ.) -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2562The purpose of the research is to devise and implement for testing the ability to absorb energy from vibration. The results are obtained from simulating the operating status of small machines. In order to get the mechanical force from the vibrating of the machine by using piezoelectric materials (PZT) It was found that the size of the piezoelectric materials used in each condition affected the energy absorption. There are variables interested in different diameters at 27 and 35 millimeters.
The result shows that the dielectric displacement is directly proportional to the force used but is inversely proportional to the size of the cross-sectional area of the piezoelectric material. In addition, the ability to absorb energy in one second is 4.51 volts and has a maximum energy of 7.4 x10 -8joules.Rajamangala University of Technology Phra Nakho
การบำบัดน้ำเสียจากสีย้อมผ้าด้วยกระบวนการโอโซนเนชัน โดยใช้ตัวกลางพลาสติก เคลือบผิวไทเทเนียมไดออกไซด์ชนิดรูไทล์เป็นตัวเร่งปฏิกิริยา
No full textโครงงานพิเศษ (วท.บ.) -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2562This research is to study the efficiency of treating wastewater from dyeing fabric
by the ozonation process. By using rutile TiO2 coated plastic media to catalyze. Which
uses O3 generators with a capacity of 2.62 - 3.10 g/hr. By studying the factors that affect
the treatment efficiency of COD and color, such as the pH of the water used in the
treatment at pH 3, pH 7 and pH 11, the initial COD concentration of 100%, 50% and
25% which have values in the range of 100 -320 mg/L. O3 exposure time 120 min. From
the study, it is found that the efficiency of reducing the impurities in wastewater by
the ozonation process in the pH 11 state, the COD concentration at 50%, can reduce
the COD. And the maximum color is at 33.3% and 90% from the 550 ADMI color
intensity, with a COD of 180 mg/L. For the study of the efficiency of reducing the
impurities of wastewater by ozonation process together with 2 g. of TiO2/1 L. of
wastewater in the condition of pH 11, concentration COD Beginning at 100%, with the
ability to reduce COD values And the maximum color is at 40% and 80% of the 270
ADMI color intensity, with a COD of 190 mg/L. The amount of O3 suitable for treatment
has an average value of 0.0374 g/min./10.5 L. of wastewater. The duration of O3
exposure in both processes has a similar approach to the efficiency of COD and color
treatment when increasing the duration of O3 exposure.Rajamangala University of Technology Phra Nako
การประดิษฐ์เครื่องประดับสตรีปรับเปลี่ยนรูปแบบด้วยกระจกล้านนา
Get PDFโครงงานพิเศษ (คศ.บ.) -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2562The special project study aims to create transformative jewellery for women from Lanna-style glass as well as to examine the satisfaction of the target groups on the jewellery. The different three design of the transformative jewellery were sketched based on the review information. The jewellery can be split into smaller pieces which are a necklace, earrings and a brooch. Then, a favourite design was considered by five experts. Some recommendations for better design were also provided. After that, the jewellery was created according to the selected sketching. The satisfactions on the jewellery were collected from two groups of people; 1) twenty-five jewellery entrepreneurs and 2) twenty-five working women aged 18-60 years (Ministry of Labor, 2019). The total data of fifty samples were analysed by using frequency, percentage, and mean. The results showed as following.
Three of the five experts chose the design number three as the model was interesting. The necklace, earrings and brooch can be detached to suit an outfit perfectly. The experts preferred the transformation by studs and hooks. Furthermore, the colour tones are harmonious and can draw the human perception resulting in a variety application on an outfit.
The satisfaction of two groups of people; 1) jewellery entrepreneurs 2) working women aged 18-60 years; were examined. It was found that for the style of the jewellery, both groups were satisfied with the creativity of the jewellery design at the highest level, the satisfaction means were 4.80, and 4.68 respectively. In terms of materials, the entrepreneurs were satisfied with the novelty, the strength and durability, and the safety of materials at the highest level, having the same means of 4.36. The working women were satisfied with the suitability of the materials at the highest level, with the mean of 4.52. In terms of utility, both groups had the satisfaction of wearing to parties at the highest level, with the mean of 4.56 and 4.44 respectively. Regarding the price, the entrepreneurs were satisfied with the price of 3,999 baht at the highest level, with the mean of 4.48. Also, the working women were satisfied with the price of 2,999 baht at a high level, with the mean of 4.20. For the place of distribution, both groups had the satisfaction of the jewellery stores at the highest level, with the mean of 4.96 and 4.52 respectively.Rajamangala University of Technology Phra Nako
การออกแบบนวัตกรรมผลิตภัณฑ์สำหรับผู้สูงอายุจากภูมิปัญญาท้องถิ่นไม้ตาลโตนด
Get PDFรายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2562The objective of this research is 1. To design innovative products for the elderly from local palm sugar palm that can help and promote health in their lives. 2. To create innovative product design guidelines for the elderly from palm sugar palm local wisdom. Which is unique to the community, able to be manufactured to upgrade products developed from local knowledge The design method is to study the behavior of health problems of the elderly physically which has changed. Due to old age Is a physiological change Muscle weakness Reduced strength Taking care and promoting physical health of the elderly is important. The researcher conducted a research using 5 innovative product design methods for the elderly that can help promote health in the lives of the elderly.
The results of the experiment by using product innovations for the elderly from local wisdom, Tan palm wood that can help and promote health in life. The trial was conducted with 50 elderly people in the conceptual model. In front of usage, it was found that the elderly were satisfied with the product innovation for the elderly at a very good level. Products from palm sugar palm Is a product that is made from the trunks of palm sugar palm Is a valuable work Is a local identity the study of using palm sugar wood as material for product preparation for the elderly needs to communicate the meaning of palm sugar wood. Which is a way of life and wisdom, showing the good memories of the elderly and able to create patterns and guidelines for creating unique products for the community. Value of life and dependence on nature. Which is a natural resource that is locally important.Rajamangala University of Technology Phra Nakho
การศึกษาการยืดอายุการเก็บรักษาของผลิตภัณฑ์ขนมปังด้วย calcium propionate, acetic acid และ sorbic acid
Get PDFรายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2564White bread has a short shelf life, thus the loses its desired charcteracteristics upon storage and its also subject to spoilage by fungi. To avoid this spoilage and increase shelf life, the addition of different levels of acidulants (calcium propionate, acetic acid and sorbic acid at 0.1, 0.2 and 0.3%) were evaluated for their quality characteristics contributing with acidulants as well as their microbial shelf life during 12 days of storage. In addition, the mathematical model (GAB and BET) were applied to study the storage condition of bread. From the experiment, it was found that bread with calcium propionate addition had the highest specific volume and springiness, followed by bread with acetic acid and sorbic acid adding. On the other hand, bread contained sorbic acid had the highest density, hardness, chewiness and color values (L*, a*,b*), followed by acetic acid and calcium propionate addition in order. Bread contained calcium propionate had the longest shelf life (12 days), followed by bread with acetic acid (8 days) and sorbic acid (6 days) adding, respectively. The increase in acidulants levels result in an increase of bread shelf life. From the sorption isotherm curves, bread contained 0.3% calcium propionate had the highest monolayer moisture content, indicating that it was the most effective against microbrial spoilage of white bread studied.Rajamangala University of Technology Phra Nakho
ปัจจัยส่วนประสมทางการตลาดที่มีความสัมพันธ์กับพฤติกรรมของผู้สูงอายุในการบริโภคอาหารประเภทสุกี้ ในกรุงเทพมหานคร
Get PDFวิทยานิพนธ์ (คศ.ม.) -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2563The objectives of this study were 1 ) to investigate the marketing mix factors influencing sukiyaki consumption among the elderly in Bangkok, 2) to explore the consumer behavior of the elderly in sukiyaki consumption, and 3 ) to study the relationship between marketing mix factors and the behavior of the elderly in sukiyaki consumption in Bangkok. The sample was 400 elderly people aged 6 0 years and over who living in Bangkok and consumed sukiyaki as food. A questionnaire was used as a research instrument. Statistics used in data analysis were frequency, percentage, mean, standard deviation and hypothesis testing using Chi-Square.
The results found that 1) overall opinion of the sample group was at a high level, in terms of opinion on service staffs, distribution channels, product price, service process and physical environment except for marketing promotion, there was at moderate opinion. 2) In terms of sukiyaki consumption behavior, the most popular ingredients in sukiyaki were fresh vegetables, meat and meat products, noodles and starchy foods, eggs, and mushrooms. The sample group liked to consume in sukiyaki restaurants. The reasons for sukiyaki consumption
were the taste, quality, freshness, various menus, and the price of the food was reasonable with the quantity and quality. The frequency of consuming sukiyaki was less than once a month, followed by once a month. The average food cost was between 201-300 bath per person. Most sukiyaki consumption time was on weekends between 13.01-16.00. Most of the consumption consisted of family members and the number of people eating was 4 or more. 3)
Marketing mix factors included product factors, price, distribution channels, marketing promotion, service staffs, service process, and the physical environment found to be related to Suki food consumption behavior in terms of the reason for consumption, the frequencies used in food consumption per month, the average consumption cost per time per person, and the time spent in food intake with statistical significance at the .05 level.Rajamangala University of Technology Phra Nakho
ชุดทำงานสตรีจากผ้าฝ้ายมัดหมี่ทอมือบ้านซับระวิง
Get PDFโครงงานพิเศษ (คศ.บ.) -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2562This Project ‘Thai Ikat Fabric Woman Working Suit from Sub-Ra-Wing Village’ aims for 1) to design the woman working suit that made from Sub-Ra-Wing Village’s fabric 2) to examine satisfaction of paticipants toward the designing processes of the woman suit according to 4 processes which are 1) the selection of Sub-Ra-Wing Village’s fabric that will mostly suit for the project 2) the process of design and selection woman working pattern 3) dressmaking and 4) examing the satisfaction of the viewers and paticipants toward the completed suit. Moreover, the participant are 120 people aging 25-35 years old. The data was calculated by statistic, percentage and mean as a result.
The participants are; 87 people (72.50 percentages) are female. 85 people (70.80 percentages) are aging between 25 - 29 years old. 99 people (82.5 percentages) are undergraduated. 30 people (25.00 percentages) are students which equals to participants who have personal business. Lastly, 55 people (45.80 percentages) are workers who have monthly income during 10,001 - 20,000 baht. The result of overall ‘Thai Ikat Fabric Woman Working Suit from Sub-Ra-Wing Village project ’ show that satisfaction at hight level (mean 4.46). Eaeh design it was found that. participants satisfaction to design 1 of coat and design 3 of shit and skirt at most level (mean 4.57 and 5.45 respectively). And design 2 of shirt and long pant design 4 of dress and design 5 of sweatpant. satisfaction at hight level (mean 4.47 4.41 and 4.32 respectively)Rajamangala University of Technology Phra Nakho
การพัฒนาไอศกรีมนมเสริมอกไก่
Get PDFวารสารวิชาการและวิจัย มทร.พระนคร, ปีที่ 15, ฉบับที่ 1 (ม.ค.-มิ.ย. 2564), หน้า 145-155Milk 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%, 34,584 g force and 23%, respectively. The lightness (L*), redness (a*) and yellowness (b*) value were 87.10, 5.08 and 20.54 respectively.Rajamangala University of Technology Phra Nakho
ประสิทธิภาพการปฏิบัติงานยุคดิจิทัลของผู้ประกอบวิชาชีพบัญชี
Get PDFรายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2563The purposes of this quantitative research are (1) to study factors affect the digital-era job performance of accountants; (2) to study the use of technology in accounting work and the satisfaction of accountants by applying appropriate tools and technology and; to study the digital-era professional competence of accountants. The research instrument is a questionnaire which was used to collect data from accounting managers of the listed and non-listed companies approved by the Securities and Exchange Commission; auditing firms; and accounting firms in 2020.
The results reveal 33 variables consisting of five components which are (1) professional development (2) technical competence (3) employee engagement (4) organizational and communication and (5) professional attitudes and ethics. Objective one, all five components were analyzed by the multiple regression analysis to find the correlation with the variables of digital-era job performance of professional accountants (p < 0.05). The results show positive relationship of (1) professional development; (2) the technical competence; (3) the employee engagement; (4) the organizational and communication and; (5) the professional attitudes and ethics to high digital-era job performance of accountants (p < 0.05). In addition, the most accounting managers have a high level of satisfaction by adopting tools and technology. Finally, they have a high expectation of professional competencies in the technical competence; the professional attitudes and ethics; the professional skill, interpersonal and communication, and organizational.Rajamangala University of Technology Phra Nakho
การพัฒนากรอบทอผ้าสามแกนรูปหกเหลี่ยมแบบถอดประกอบ
Get PDFรายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2564Tiaxial hand waving is craftsmanship for a long history and widespread utilization. This research aims to devise a new triaxial weaving technique with a modular hexagonal triaxial weaving frame. The main structure of the modular hexagonal triaxial weaving frame is as follows: The frame is an equilateral hexagon with a side length of 50 centimeters, the inner frame is a hexagonal steel rigid frame, the outer frame is wood, can be disassembled to the steel frame. There are two types of outer frames, the first for weaving with yarn. The wood is grooved into a V-shape with 15 grooves per 10 centimeters. The second type is for weaving with stripes. The wood is flattened 7 grooves per 10 centimeters. Triaxial weaving tests with a modular hexagonal triaxial weaving frame showed that 1) triaxial fabric with basic pattern are characterized by three directions (triaxial) of yarn intersecting at 60 degree angles, amounting to 15×15×15 strands per 10 entimeters This creates an open structure. 2) triaxial fabric with dice pattern modified from plain weave with two warp set (the Y and Z warp sets) and one weft set(the X weft set) , amounting to 16×17×27 strands per length of 10 centimeters. 3) modified from twill weave with three sets of yarn, amounting to 16×16×27 strands per length of 10 centimeters. It can be seen that modular hexagonal triaxial weaving frame as a laboursaving device enables weaver to employ complex weaving pattern in their triaxial fabric, and showcase many creative possibilities that move away from the conventional fabric.Rajamangala University of Technology Phra Nakho