จำนวน Repository ( 286 )
การกำจัดสีย้อมผ้าด้วยถ่านกัมมันต์จากเมล็ดสละพันธุ์สุมาลีที่กระตุ้น ด้วยสารละลายโพแทสเซียมไฮดรอกไซด์
Dyes contaminated in wastewater that negatively affecting the environment and human health. The objectives of this study to prepare activated carbon from Salacca zalacca (Sumalee) seeds activated by 36 mmol/g KOH dye solution and activated carbon ratio 20:32 ml/g for dye removal. The influents of dye removal from wastewater by Salacca zalacca (Sumalee) seeds activated carbon were investigated as initial dye concentration activated carbon and dye solution ratio and contraction time. The moisture content the iodine number the methylene blue index and the functional groups by FTIR technique of the Salacca zalacca (Sumalee) activated carbon were characterized and the kinetics adsorption were also analyzed. The results showed that the activated carbon was the microporous material the highest dye removal from wastewater was 7.50 ± 0.25 mg/g the equilibrium time was 150 min with the activated carbon to dye solution ratio of 1:500 g/ml for 200 mg/l initial concentration. The kinetics of the adsorption process can be described by a pseudo-second order model (R2 = 0.9999). When increasing the initial concentration of dyes the adsorption efficiency was increased. The amount of activated carbon increased resulting in lower adsorption efficiency and the equilibrium time was longer
กรรมวิธีการปรับกรดของผักและสลักด้วยเครื่องปรับสภาพความเป็นกรดภายใต้การควบคุมอุณหภูมิและความดันบรรยากาศ
. This research aimed to study the acidification processes of carving vegetable using acid conditioning machine under emperature and pressure control which was developed in this study. Four acidification procedures were done at normal atmospheric pressure (method 1) under vacuum pressure for 10 (method 2) and 20 min (method 3) and vacuum pressure alternating with normal atmospheric pressure for each of 1 hour. There were two main parts of acid conditioning machine including the temperature controller inside the pickle tank and heat conductor tank and the pressure controller inside the pickle tank. The pickling temperature was stabled at 40oC under the pressure of 0.5 Bar. PLC (Programmable Logic Controller) program was used to write the ladder for controlling all processes and display through SCADA system. The results showed that the acidification method by soaking the carved-rose carrot under vacuum pressure alternating with normal atmospheric pressure showed the shortest time to equilibrium by 7 hours. Then the carved-rose carrot was packed in the glass jar followed by sterilized in boiling water for 15 minutes and stored at room temperature for 7 days. Total bacteria count Escherichia coli and Yeast-mold were not exceeded than the standard limit. Staphylococcus aureus was not detected throughout the storage periods
การใช้หลักปรัชญาเศรษฐกิจพอเพียงในการดำเนินชีวิตของผู้มีงานทำในกรุงเทพมหานคร
The purpose of this study is to study the 1) Demographic factors affecting the knowledge about the sufficiency economy philosophy of those employed persons in Bangkok. 2) Demographic factors affecting the use of sufficiency economy philosophy in the life of the person employed in Bangkok. 3) The relationship between knowledge about sufficiency economy philosophy and the use of sufficiency economy philosophy in the life of the employed persons in Bangkok. The samples in this research were 540 the employed persons in Bangkok selected by multistage random sampling. The research instrument was test with 10 items and questionnaires of rating scales with 30 items. The statistics used to analyze the data including the number and percentage mean standard deviation t - test for independent sample One-Way ANOVA Scheffe’s test analysis and simple correlation coefficients were statistical method to analyze data. The research found that: 1) Most of the respondents were female aged less than 35 years single status education level Bachelors degree career employees to a private company. The average monthly income of less than 35000 baht Hometown Central region. Have knowledge of the sufficiency economy philosophy at a moderate level. The sufficiency economy philosophy is applied to life at a high level. 2) Demographic factors affecting knowledge of the sufficiency economy philosophy include gender age education level occupation and average monthly income. Comparison results vary statistically significantly at a significant level of 0.05. 3) Demographic factors affecting the use of sufficiency economy philosophy in the life of those employed in Bangkok include gender age marital status education level occupation and average monthly income. Comparison results vary statistically significantly at a significant level of 0.05 4) The relationship between knowledge about sufficiency economy philosophy and the use of sufficiency economy philosophy in the life of the employed persons in Bangkok. There was a relationship that was not statistically significant. At a significance level 0.05
รูปแบบการจัดกิจกรรมการเรียนรู้เพื่อการพัฒนาคุณภาพชีวิตของผู้สูงอายุ โดยใช้โรงเรียนผู้สูงอายุเป็นฐาน
This research is a Qualitative Research in the form of Case Study which aims to analyze learning activities and learning activities model to improve the life quality of the elderly by using schools as a base. This focuses on collecting data from indepthinterviews individually from 15 major informants including group discussionswith related 12 representatives from elderly schools who are the master and haveoutstanding learning activities. The elderly schools include the Elderly School of Plubplachai Sub-district U Thong District Suphan Buri Province the Elderly School of Tumbon Nonglan Tamaga District Kanchanaburi Province and the Elderly School of Yannawa District Bangkok. In addition observation and field notes are used in collecting data. The data was analyzed by using content analysis and occurring phenomena descriptive analysis The results indicated that things to consider about learning activities for improving the quality of life of the elderly by using schools as a base include (1) the background of the elderly school (2) Purpose or intention of learning management (3) the elderly school learning content or curriculum (4) Process patterns or methods of learning management (5) Assessment or impact. These are diverse under the concept of establishing an elderly school and the learning activities are organized by the interests of the elderly and those activities are important for their livelihood. There are 2 characteristics of the learning activity model for improving the quality of life of the elderly which are (1) It is a learning activity model with institution curriculum and lessons. The activity is an activity that encourages networks in community to be speakers to transfer knowledge or lecture and practice via various learning tools. (2 ) It is a learning activity model of the villagers. It is an alternativeactivity for learners. It is an empirical learning model that is demonstrated and then acted such as career development activities ones own well-being activities and other activities. Moreover there are other learning activity models i.e. (1) It is a learning activity model based on what should be known about current lifestyle and world society. (2) It is a learning activity model based on what must be known about benefits and protection. (3) It is a learning activity model based on curious things which response to learning needs based on learners life and cultural basis of the local community. The result of this research is to be a guideline in order to promote operations and enhance the potential of the elderly that are suitable to the context of the area group and expand the learning management by using the elderly school as a base.
อุปกรณ์ป้องกันการโจรกรรมรถยนต์ด้วยการแจ้งเตือนผ่านคลื่นวิทยุ
Currently car theft in Thailand is one problem that affects the economy and involves transnational criminals although there are many anti-theft devices available on the market. These mechanisms include gear locking devices steering wheel locking devices clutch/brake locking systems TDS systems voice transmissions wireless door-lock remote control system and GPS car tracking devices. Of the mentioned devices the GPS tracking devices are interesting as they use the principle of connecting to the cell phone system to send on-demand the GPS location of the car to the owners phone in the case that the vehicle is stolen. However these devices are not popular in the marketplace because the service fees are quite expensive. Also the function of these devices is to send the vehicles location to the verified car owner so the protection function is activated after the vehicle is stolen and the owner is only then aware that the car has been stolen. This is different from the devices that researchers have developed. The researchers equipment for when someone tries to steal a vehicle is the system will detect the movement inside the car and send the GPS location to the car owner instantaneously. Additionally the device was developed by using LoRa technology to transmit the data giving a lower operating cost than by using a GPS tracking device as sold on the market presently.