จำนวน Repository ( 1852 )

การพัฒนากระดาษจากเส้นใยทะลายปาล์มน้ำมันเปลือกหุ้มผลปาล์มน้ำมันและเปลือกปอสา และสารเคลือบไคโตซาน
การพัฒนากระดาษจากเส้นใยทะลายปาล์มน้ำมันเปลือกหุ้มผลปาล์มน้ำมันและเปลือกปอสา และสารเคลือบไคโตซาน

This research aimed to develop paper from oil palm empty fruit bunch (Fb) oil palm mesocarp (M) and paper mulberry (P) with chitosan coating to be used as single-use paper bag for dry food products. The optimal pulp preparation conditions for Fb M and P fibers were boiling in 25 25 and 15% NaOH solution at 170 170 and 100°C for 3 hours respectively. The optimal H2O2 concentrations for bleaching of Fb M and P pulps were 40% 40% and 0.2% respectively. The obtained pulps were used to prepare papers with the basis weight of 109 g/m2 . The papers consisted of Fb M and P pulps at ratios of 70:0:30 (FbP) 0:70:30 (MP) and 35:35:30 (FbMP). It was found that FbP paper showed superior physical and/or mechanical characteristics than those of MP and FbMP. FbP papers were then coated with chitosan solutions (0.2-0.6%) to further improve their mechanical properties and reduce their water absorption characteristics. The optimal concentration of chitosan was 0.4%. This study showed that all three types of pulps could be used to produce papers that had equal or superior mechanical- and water adsorption properties as compared to those of commercially available paper bags made from wood pulp.

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จุดหลอมเหลวและสัมประสิทธิ์การพาความร้อนแบบธรรมชาติของขี้ผึ้งพาราฟิน
จุดหลอมเหลวและสัมประสิทธิ์การพาความร้อนแบบธรรมชาติของขี้ผึ้งพาราฟิน

This research was aimed to study melting behavior of paraffin wax and to evaluate the natural heat convection coefficient of solid cylinder paraffin wax. Two grades of solid paraffin wax; white commercial grade and yellow market grade were studied. Three sizes of flat test tube in diameter 1.5 2.0 and 2.5 centimeters were used. Three different amounts of paraffin indicated from samples’ heights of 5 7 and 10 centimeters were set. The results found the average melting point of both grade paraffin ranged from 44-77 oC. Based on the numerical analysis heat behavior of solid cylinder paraffin at the initial temperature of 50 oC to room temperature of about 30 oC found that natural convection coefficients was ranged from 3 to 9 W/m 2oC. Melting point temperature was found mass independent property while natural convection coefficient declined as the sample’s diameter size inclined

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ระบบตรวจจับความเคลื่อนไหวกรณีมีผู้บุกรุกพื้นที่ส่วนบุคคล และแจ้งเตือนผ่านไลน์แอปพลิเคชันภาพและข้อความ
ระบบตรวจจับความเคลื่อนไหวกรณีมีผู้บุกรุกพื้นที่ส่วนบุคคล และแจ้งเตือนผ่านไลน์แอปพลิเคชันภาพและข้อความ

This thesis discusses the development of the result of the motion detection of a person using the system sending the image signal and the character derived from the camera (Pi camera) to send a notification of personal space invasion via Using raspberry pi Zero w is a data management system that is received from the Motion Sensor in conjunction with the Raspberry camera and has stored JPEG images received from the camera to process the data sent into the Line Server for Users can send images via Line Application party monitoring intrusion into personal space

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การพัฒนาหนังสือนำเที่ยวโบราณสถานในเขตดุสิตโดยใช้เทคโนโลยีความเป็นจริงเสริม
การพัฒนาหนังสือนำเที่ยวโบราณสถานในเขตดุสิตโดยใช้เทคโนโลยีความเป็นจริงเสริม

This project aims to develop the guidebook of historic site in Dusit area via augmented reality and to support cultural tourism in providing historic site information. The guidebook is created with nine historic sites in Dusit area which are Benchamabophit Dusitwanaram Temple Devarajkunchon Temple Sukhantharam Temple Mai Thongsen Temple Ratchaphatikaram Temple Ratchaphatikaram Temple Bot Samsen Temple Ruan Mor Phon Museum Parutsakawan Palace and Suansunandha . It is developed by using the SketchUp Pro 2016 the Unity 2017 the Vegas Pro 14.0 and the Photoshop CS6. The results show that tourists can use the guidebook of historic site in Dusit area for basic information. Inside the guidebook there are history of historic sites and bus. Moreover the QR-code can be scanned with augmented technology for information of historic site as English video providing history of historic site and 3D model of historic site with 9Dusit application.

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การบําบัดน้ำเสียจากชุมชนด้วยระบบเอสบีอาร์ร่วมกับยางพื้นรองเท้า
การบําบัดน้ำเสียจากชุมชนด้วยระบบเอสบีอาร์ร่วมกับยางพื้นรองเท้า

This research has studied the treatment of municipal wastewater with shoe soles as a supporting media for Sequencing Batch Reactor. The objectives of this research were the conditions to for optimize growing Photosynthetic Bacteria (PSB) and understand the treatment efficiencies of municipal wastewater treatment with PSB in Sequencing Batch Reactor (SBR). Three types of shoe soles were applied in this research composed of rubber shoe soles neoprene and EVA and the control without shoe soles. The experimental factors included the essential parameters such as BOD COD SS MLSS MLVSS Phosphorus and Ammonia-Nitrogen. F/M Ratio was adjusted at 0.13 and hydraulic retention time (HRT) was at 5 days. The results indicated that the removal efficiencies of SBR with rubber shoe soles in terms of BOD COD SS phosphorus and ammonia-nitrogen were 87% 80% 94% 53% and 68% respectively. The removal efficiencies of SBR with Neoprene shoe soles in terms of BOD COD SS Phosphorus and Ammonia-Nitrogen were 89% 81% 95% 20% and 73%. The removal efficiencies of SBR with EVA shoe soles in terms of BOD COD SS phosphorus and ammonia-nitrogen were 91% 86% 95% 56% and 74%. The removal efficiencies of SBR without shoe soles in terms of BOD COD SS phosphorus and ammonia-nitrogen were 84% 79% 93% 86% and 67% respectively. The treated wastewater was rather clear low content of suspended solids and no malodor. From overall results the treatment of municipal wastewater by anaerobic sequencing batch reactor with different types of shoe soles was not significant for wastewater treatment efficiencies by anaerobic with any 3 types among of shoes soles can be efficiently applied for municipal wastewater treatment.

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