จำนวน Repository ( 197 )
การเปรียบเทียบวัสดุที่ใช้ทำแม่พิมพ์ฉีดที่ทำจากอลูมิเนียมเกรด A7075 กับ เหล็กเกรด P20
Material selection for mold making are not only material prices wages but also there are other factors such as thermal strength shine and resistance to temperature changing that caused distortion and cracks. Preform injection molding from Polyethylene Terephthalate (PET) consumes time for drying granulated plastic in 4 – 6 hours at 140 - 160°C and injects at 280 – 300 °C. This is a very high temperature to inject into mold at 10 – 15°C in cool area. The material for mold making must be able to resist to thermal shock. Today molding machines are made of grade P20 steel (Standard JIS) to produce preform that takes long cycle time due to poor cooling. The research aims to compare the pricing time in mold making to preform injection time that made of aluminum -A7075 grade and grade P20 steel. The experiment is to make a mold that made of aluminum A7075 grade and grade P20 steel injects 15 gram preform. The PET is used to blow into a blow mold with pressure at 30 – 35 bar (Two – Stage) that are 2 bottles of 350 ML. The results of material selection for preform mold making showed that aluminum A7075 grade is cheaper 27.04% the mold price is cheaper 23.6% and consumes less cycle time than grade P20 steel.
การพัฒนาผืนผ้าด้วยเส้นด้ายพิเศษจากเศษวัสดุสิ่งทอเหลือทิ้ง
The research aimed to Develop of textile in SLUB Yarn fabric from textile material waste. The purpose is to develop Fancy yarn (SLUB Yarn) from textile material waste. To develop woven with Fancy yarn (SLUB Yarn) textile material waste. To study Fancy yarn (SLUB Yarn) properties and woven with Fancy yarn (SLUB Yarn) from textile material waste. The First step is sorting and scouring textile material waste from silk yarn and to spin 2 types of Fancy yarn SLUB Yarn as 50 percent silk fiber blended with 50 percent Cotton and other type as 100 percent Silk. The Second steps is to testing of physical properties in the textile testing laboratory. The testing results are Silk Fancy yarn (SLUB Yarn) from textile material waste have twisted more than Silk blended with Cotton. It make textile material waste from Silk yarn smaller and stronger than Silk blended with Cotton and also more tenacity meanwhile it has highest tensile strength and elongation than Silk blended with Cotton. The Third steps to produce woven fabrics with plain weave structure. The weaving results have 2 fabrics the first types from Fancy yarn (SLUB Yarn) weaved by 50 percent Silk fiber blended with 50 percent Cotton in Industrial woven system and the second types from Fancy yarn (SLUB Yarn) weaved by 100 percent silk in hand woven system or with traditional weaving loom. The Last steps are to test the 8 topics physical properties of 2 woven in the textile testing laboratory. First Colorfastness to washing testing was found that Silk fabrics of Fancy yarn (SLUB Yarn) from textile material waste is durable to washing than 4.58 percent. Second Water absorbency Testing was found that both of two fabric types are equal to 60 (seconds). Third Moistures Management testing was found that the moisture absorption and wet textile as follows at 6 parts : the duration of the wet cloth was found that Silk fabrics of Fancy yarn (SLUB Yarn) from textile material waste is more absorbed than Silk fiber blended with Cotton and the duration of adsorption rate was found that Silk fiber blended with Cotton fabrics of Fancy yarn (SLUB Yarn) from textile material waste is better than Silk fabrics. The radial distribution of moisture on the both side of fabric surface was found that Silk fiber blended with Cotton fabrics of Fancy yarn (SLUB Yarn) from textile material waste is better and more effective and also there are the distribution and direction of motion better than Silk fabrics of Fancy yarn (SLUB Yarn) from textile material waste. MoreoverIt was humidity control overall properties. Forth Pilling Resistance Testing was found that both of 2 fabrics are Pilling Resistance fur and beads up on the surface slightly. Fifth Fabrics Thickness testing was found that Silk fabrics of Fancy yarn (SLUB Yarn) from textile material waste more over was 0.10 mm. Sixth Dimensional stability to washing after 5 times Testing (changes size after washing) was found that Silk fiber blended with Cotton fabrics of Fancy yarn (SLUB Yarn) from textile material waste was shrinkage after washing in the warp yarn more than -7.6 and shrinkage after washing in the weft yarn more than -7.0. Seventh pH-Acid Value Testing was found that Silk fiber blended with Cotton fabrics of Fancy yarn (SLUB Yarn) from textile material waste has pH-Acid less than 0.07. Eighth Heavy Metal Testing was found that Silk fiber blended with Cotton fabrics of Fancy yarn (SLUB Yarn) from textile material waste has 3 Heavy Metals such as chromium lead and copper while Silk fabrics of Fancy yarn (SLUB Yarn) from textile material waste has 2 Heavy Metals such as copper and lead.
Needs Pattern and features on Internet Web Board of Bangkok Teenagers
The Study on Needs Patterns and Features on Internet Web Board of Bangkok Teenagers aims to find out the needs patterns and features on internet webboard of Bangkok teenagers and comparison of needs patterns and features on internet webboard of Bangkok teenagers by sex age and status on webboard. The sample groups of this study are teenager of Bangkok. They are age between 15-25 years randomly distributed each place of Bangkok for 400 persons. The sample is divided into 4 groups according to the class is a group of 15 years a group of 16-18 years a group of 19-22 years and a group of 23-25 years. Tools to collect data on the close-ended questionnaires. Data were analyzed by using descriptive statistics is the frequency and percentage. The results show that they needs resolution of 1024x768 Pixel size 14-16 point used standard fonts a forum held in the middle the same background color is white or blue font color is black pagination with the table customize the fonts themselves both the post and reply sort by latest post. The needs of webboard features show that need to register before post rarely used pictures and sound effects used of the Emotion Icon frequently (more than 50%) can be inserted the picture more than size 1000 KB to send or not send an email back equally (50.7:49.3) . If the webboard use real ID card to register to post and reply found that most users will not reply and then read only. The user needs a repository of unlimited forum. If given a choice between The speed in the open and the many features user to choose a simple but high-speed turn. But as a whole most users prefer to have the many features forum to use
Junos Pulse Secure Access Service Administration Guide
The Juniper Networks Secure Access Service enable you to give employees partners and customers secure and controlled access to your corporate data and applications including file servers Web servers native messaging and e-mail clients hosted servers and more from outside your trusted network using just a Web browser. Secure Access Service provide robust security by intermediating the data that flows between external users and your company’s internal resources. Users gain authenticated access to authorized resources through an extranet session hosted by the appliance. During intermediation Secure Access Service receives secure requests from the external authenticated users and then makes requests to the internal resources on behalf of those users. By intermediating content in this way Secure Access Service eliminates the need to deploy extranet toolkits in a traditional DMZ or provision a remote access VPN for employees. To access the intuitive Secure Access Service home page your employees partners and customers need only a Web browser that supports SSL and an Internet connection. This page provides the window from which your users can securely browse Web or file servers use HTML-enabled enterprise applications start the client/server application proxy begin a Windows Citrix or Telnet/SSH terminal session access corporate e-mail servers start a secured layer 3 tunnel or schedule or attend a secure online meeting.