จำนวน Repository ( 361 )

การออกแบบเครื่องทอผ้า ๒ ตะกอ เพื่อพัฒนาผลิตภัณฑ์ชุมชนเชิงพาณิชย์
การออกแบบเครื่องทอผ้า ๒ ตะกอ เพื่อพัฒนาผลิตภัณฑ์ชุมชนเชิงพาณิชย์

The purposes of this research were to design and create the weaving machine to ๒-๔ heddles for small sample weaves were not over ๒๓ inches width. It brought to use striped woven community sample to develop commercial products by using the physical data of the local woven fabric and fabric size product samples were made for criteria of community design to hold dimensions of the weaving loom and the various components of its. The study found that woven fabrics were made in community products which mainly used hooks not exceed ๓ per strip. Repeat stripes as basic weaves structure ๑/๑ and diagonal stripes ๒/๑ weft density of ๖๐-๑๒๐ lines per inch. The fabric sample sizes for the presentation book were offering commercial customers with ๓ inches wide and ๒๕ inches long. ๒ heddles weaving loom were designed and developed by a comb ๓ inches wide in ๔ heddles. The heddle lift lever system was called elastic spring system the press lever heddle system was called Countermarches system weft thread transmission system and impacted them were woven worker type. Roll fabric system and loosed warp thread was adjustable by locking helical gear of warp thread roll. Two heddles weaving loom design to develop commercial community products can weave for ๓ pattern samples that were ๑/๑ plain weave pattern ๒/๑ diagonal striped pattern satin pattern ๒/๒ wings pattern zigzag twill pattern tortoise scales pattern and application of basic woven pattern. According to the experiment warp weave fabric size ๒๐/๒ and weft weave size ๒๐/๒ teeth comb # ๓๘ and #๒๐. When started warp thread placed ๑๓ inches into weft thread for ๒ threads interlock with teeth comb. It can be woven in ๑๓ inches width. The density of weft thread was ๖๐ threads per inch. It can choose woven patterns and bring to make the woven sample to commercial products. The ready woven fabrics were the crafts worthy of folk wisdom shawls by loom weaving and local fabric pattern.

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การออกแบบและพัฒนาการควบคุมแรงดันไฟฟ้าส่วนเกิน
การออกแบบและพัฒนาการควบคุมแรงดันไฟฟ้าส่วนเกิน

The purpose of this research is to facilitate technology of limiting excess electricity from the source before supplying to the electrical appliances. The distribution of electricity by Metropolitan Electricity Authority (MEA) frequently exceeds the needs of households and factories due to the fact that the voltage has to be enough to send electricity to users who are located further at the end of the voltage grid lines. Most electrical appliances are designed to perform at optimum voltage of 220 Volt. The voltage optimization system controls the incoming voltage to fit the optimum voltage of electrical appliances which will reduce the overheating phenomenon and thus lengthen the lives of electrical appliances. It can save 8-14% of total energy being consumed and potentially reduce CO2 emission. This analysis system can be used for industries in the range of small to large companies. From the development of remote monitoring using a control via internet or 3G/4LTE the voltage optimization system showed practical power saving results of the reduced power usage and lengthen the lives of electrical appliances; that leads to reduction of emerging electricity resource eradication of natural resources increase the chance of marketing competition and energy sustainable

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การพัฒนาแบบจำลองความรู้ด้านเทคโนโลยีผนวกวิธีการสอนและเนื้อหา (TPCK) ในการประเมินศักยภาพความร้อนของนักศึกษาฝึกสอนสายช่างอุตสาหกรรม
การพัฒนาแบบจำลองความรู้ด้านเทคโนโลยีผนวกวิธีการสอนและเนื้อหา (TPCK) ในการประเมินศักยภาพความร้อนของนักศึกษาฝึกสอนสายช่างอุตสาหกรรม

This research conducted an investigation on vocational pre-service teachers’ performance based on Technological Pedagogical Content Knowledge Framework (TPCK) to support learning in 21st century. TPCK Framework integrated three kinds of knowledge needed by a teacher in providing learning process for students effectively. The results of this study found that vocational pre-service teachers had the knowledge of using technology understanding teaching pedagogies and mastering on content individually. However they were limited in blending such essential three domains together to form more effective learning process for their students.

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ผลิตภัณฑ์แผ่นฝ้าเพดานผสมขุยมะพร้าวที่มีสมบัติต้านทานการดูดซึมน้า และเป็นฉนวนป้องกันความร้อน สำหรับชุมชนท้องถิ่น
ผลิตภัณฑ์แผ่นฝ้าเพดานผสมขุยมะพร้าวที่มีสมบัติต้านทานการดูดซึมน้า และเป็นฉนวนป้องกันความร้อน สำหรับชุมชนท้องถิ่น

This research aims to develop the ceiling board mixed with coconut coir. The 5 ratios of gypsum plaster: coconut coir: sodium silicate: tap water are equal to 1 : 0 : 1: 0.03 1: 100: 1: 0.03 1: 150: 1: 0.03 1: 200: 1: 0.03 1: 250: 1: 0.03 และ 1: 300: 1: 0.03 by weight. The ceiling boards were produced by casting in normal temperature (30 – 35 degree of Celsius). The properties testing of ceiling board mixed with coconut coir followed the TIS 219-2009 standard (gypsum plasterboard) including: breaking load nail pull resistance deflection water absorption density and thermal conductivity coefficient. From the results 1 : 1 5 0 : 1: 0.03 is the most suitable ratio of ceiling board mixed with coconut coir. This developed ceiling boards can reduce the quantity of coconut coir waste and get the good thermal insulation ceiling board products

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อาคารสำเร็จรูปครึ่งทรงกลมจากโครงสร้างเหล็กแบบถอดประกอบง่าย
อาคารสำเร็จรูปครึ่งทรงกลมจากโครงสร้างเหล็กแบบถอดประกอบง่าย

The objectives of this research are to develop the structure to create the knowledge of construction technology to test the properties to construction the prototype building and to transfer the technology of hemisphere pre-engineered building with easy assembly steel structure type. The load and resistance factor design (LRFD) method was used to design the structure by regarding the strength material type construction and deconstruction step and cost. From the design the prototype of hemisphere pre-engineered building (only the frame structure) was construction with 5 meters of diameter 3.5 meters of height 19.635 square meters of useful space 200000 Baht of material cost (10186 Baht per square meter for all materials) 27 hours or 3 days of construction period. According to the modular coordination system this hemisphere pre-engineered building cans construction and deconstruction fast especially when apply to help disaster victims. After tested the structure that the calculation value of safety factor (S.F.) is 1.76. The envelope of this building used the ratio of Portland cement type 1: fine sand: coconut fiber: waterproofed liquid: tap water which equal to 1:3: 0.1: 0.02: 0.5 by weight and reinforced by round bar and wire mesh steel. According to the testing the building-envelope properties are following: density 1582 kg/m3 thermal conductivity coefficient 0 .3 7 1 watt/m.Kelvin water absorption 1 7 .3 1 % compressive strength 118.47 ksc and bending strength 28.88 ksc. Moreover these results can register the copyright and draft the research paper to transfer the technology for target group.

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