จำนวน Repository ( 26 )
A study of sawdust-produced fiberboards using lac as binder for furniture industry
There has been an extensive use of fiberboards in the furniture industry. Therefore materials containing glue are applied to develop these fiberboards. This research investigated sawdust-produced fiberboards using lac as the binder and aimed to; (1) study the appropriate mixture proportions of sawdust and lac as the binder and; (2) explore the physical and mechanical properties of different mixture proportions of sawdust and lac at 5 wt% 10 wt% 15 wt% 20 wt% 30 wt% and 40 wt%. The research methods involved selecting sizes of dried sawdust and grinding with lac and alcohol. Then the mixture was pressed in a hot-pressing machine. After that the produced fiberboards were tested using medium-density fibreboards Thai Industrial Standard (TIS 966-2547) in a laboratory. The results showed that the appropriate proportions was 15 wt% which met the standard defined in Thai Industrial Standard (TIS 966-2547). The fiberboards could replace medium-density plywood and could be used in furniture and the home decorative product industry.
Comparison efficiency of cafeteria wastewater treatment with em microbe produce by banana, watermelon and guava case study : Rajamangala University of Technology Phra Nakhon Cafeteria (North Bangkok Campus)
A Comparison Efficiency of Cafeteria Wastewater Treatment with EM Produced by Banana Watermelon and Guava Case Study : Rajamangala University of Technology Phra Nakhon Cafeteria ( North Bangkok Campus) has the objective to compare the efficiency of wastewater treatment by using the EM microbe for the Cafeteria that has no waste water treatment system. The treatment solution was leavening agent EM : Molasses : Fruits : Water in the ratio 1 : 1 : 2 : 20 liters (as an experimental group) and leavening agent EM : Molasses : Water in the ratio 1 : 2 : 20 liters (as a control group). respectively and mixed each solution set in wastewater treatment ratio of 1 : 1000 (EM 1 part : wastewater 1000 part) . In the experiment use the 10 liters of wastewater sampling and added the EM microbe solution every 3 days 10 ml per a day and daily for 3 weeks. Collecting the wastewater every 7 day. Parameters in this experiment are BOD COD SS Oil and Grease pH Color and Odor. The comparison showed that the EM made from watermelon can reduce the BOD and SS of wastewater is the best. And adapt the most of pH to pH 7. The EM make from guava can reduce the COD Oil and Grease is the best. The results were in the standards of sewage release of the building type B. In the 1st 2nd and 3rd week the BOD COD SS Oil and Grease and pH from the waste water treatment with EM microbe that make from Banana Watermelon and Guava ( as a Experimental group) and molasses (as a Control group) only are statistically different at the .05 level. By the way the Color and Odor of the waste water analysis before and after treatment with EM microbe 4 species still have yellow color and bad smell.
การวิเคราะห์สื่อส่งเสริมการท่องเที่ยวเชิงนิเวศของหน่วยงานที่เกี่ยวข้องในจังหวัดสุพรรณบุรี
This research was aimed at analyzing the content and method of communication the embedded in ecotourism promoting media produced by the concerned agencies in Suphanburi province utilizing semiotics and concepts concerning tourism along with the indepth analysis on the phenomena in the areas under study as the research framework. The researchers focused on analyzing the meaning of signs apparent in the 5 types of media chosen as the study objects. The findings reveal that the contents embedded in the tourism promoting media had contained 2 main factors – variety of tourist attractions and agricultural way of life. Both were related to tourism in an interesting way particularly the use of media for publicizing tourist attractions. Communicative methods apparent in the tourism promoting media came up in 4 modes – paradigmatic communication resulting from using small parts to simultaneously communicate metonymic communication using certain part to represent the whole binary opposition to communicate the meaning of two exclusively different things and intertextualitybased communication through which the cues of old signs were used to build up value in the new context.
การเปรียบเทียบคุณสมบัติทางกลของวัสดุที่ผลิตจากเส้นใยธรรมชาติเพื่อใช้ผลิตชิ้นส่วนภายในรถยนต์
This research aims to compare the mechanical properties of materials made from hyacinth pineapple and sugarcane fibers and also to study the feasibility of producing automotive interior parts from natural fibers. The 9 specimens that made from natural fiber such as water hyacinth pineapple leaf fiber sugar can and husk and there are also three different binders: glue polymer and polymer plus hardener were produced. All of specimens were controlled mass and density. The specimens were classified into 2 types: 1) thin type with a size of 3.5x14x1 cm in order to test the flexibility 2) thick type with a size of 6.5x6.5x20 cm for testing the ability to absorb energy. The test results showed that the specimen produced from sugar cane and husk using adhesive bonding able to receive bending stress and modulus of elasticity more than other specimens up to 80.63% and 69.19% respectively. While the ability to absorb energy from work piece made from pineapple leaf fiber and husks using polymer bender was able to absorb energy more than other work pieces 51.58%.
การพัฒนาผลิตภัณฑ์จากเปลือกนอกของก้านเผือกเหลือใช้ ในกลุ่มผู้ทานาเผือกอำเภอบ้านหมอจังหวัดสระบุรี เพื่อส่งเสริมเศรษฐกิจชุมชน
This research aims to produce paper and strands from taro fiber in order to develop into craft products and to transfer the body of knowledge and technology to community. The research consisted of 5 main steps: 1) development of paper – study concentration level of sodium hydroxide duration of pulp boiling suitable condition for breaching and softening reactive dyeing paper setting and physical testing of paper; 2) development of strand – stranding with machine strand spinning fiber combining and carding drawing reducing size of fiber and yarn spinning; 3) fiber property testing – cross-sectional test length crimp and fiber fineness; 4) product development – making evaluating and improving draft models of rubber-coated artificial flowers hanging clocks multipurpose boxes and product prototype development; and 5) transfer of technology to members of Talad Noi Agricultural Community Enterprise as well as nearby communities in Ban Moh district Saraburi province. Results of the study showed that the most suitable condition in separating fiber was boiling in 15 grams-per-liter sodium hydroxide solution at 100 Degree Celcius for 1 hour. Then breach with 9 grams-per-liter hydrogen peroxide solution at 100 Degree Celcius for 20 minutes. Next soften the fiber with 6 grams-per-liter anion softener at 60 Degree Celcius for 20 minutes. The use the fiber to set 40x40 centimeter piece of paper by spreading 20 grams of fiber equally. The resulting 0.237mg thick piece of paper was fairly resistance to piercing pressure and tearing force and was suitable to make craft products. In addition development of strands by yarn spinning method was suitable to produce strands which had more strength than strands from other plants. The strands were also suitable for further industrial production. The prototypes of utility and furnishing products were evaluated by consumers as highly suitable in 3 aspects - uniqueness of local product attractive design and size shape and weight – with mean values of 3.72 3.96 and 3.94 respectively. Price was evaluated as averagely suitable at a mean value of 3.12. Results of technology transfer showed that overall trainees were highly satisfied with the technology transfer process at a mean value of 4.55. Assessment of satisfaction and data for course improvement were both in the highest level with mean values of 4.60 and 4.51 respectively.