The purpose of this research is to study the heavy metal removal from wastewater from laboratory by using adsorption process with firebricks. Waste water was collected among three courses of laboratory such as analytical chemistry principle chemistry and chemistry for engineers. The optimized absorption efficiencies of multi-elements with stirring time volume ratio and temperature were 2 hours 10 g/100 mL and room temperature respectively. It was found that absorption efficiencies of lead (Pb) copper (Cu) zinc (Zn) chromium (Cr) were 65.1 54.8 63.4% and ND respectively.

The purpose of this study was to study and compare satisfaction of the students in Rajamangala University of Technology Phra Nakhon on the administration of student affairs. Each task as follow guidance art and culture sport education loan fund student activities welfare and health development discipline morality and ethics and alumni and community. In this research the students which study in ninth faculties of the academic years 2012 were classified by gender faculties and academic years. The questionnaires of rating scales was used as the research instrument. Percentage mean standard deviation T - test for independent sample F - test for analysis of variance one-way : (ANOVA) were statistical method to analyze data and using Fishers Least - Significant Different (LSD) for comparison the average paired difference. The results were as follows : 1. The satisfaction of the students RMUTP in overview to the administration students affairs were in great levels. When the considered separately each task in student affairs. welfare and health was the highest student activities and development discipline morality and ethics education loan fund Art and culture alumni and community guidance academic soldier and sport was the lowest 2. Classified by gender there was significant difference for satisfaction of the students at the 0.05 level. When considering satisfaction each task there was significant difference for satisfaction of the students in guidance and sport at the 0.05 level among students in different gender. 3. Classified by faculties In overview there was significant difference for satisfaction of the students at the 0.05 level. And when considering satisfaction each task there was significant difference for satisfaction of the students in guidance art and culture sport education loan fund and the student activities at the 0.05 level among students in different faculties. 4. Finally there was non significant difference for satisfaction of the students in each task and whole task at the 0.05 level among students in different academic years.

This research report is manipulated that summarized the moment of research project in the subject of “The Study and Development of Certain Microorganisms with High Capability in Nanosilver Particle Biosynthesis”. This project had been take time in 12 mounts. We focused on the isolation of microorganism that from manufacturing process and forming in gems and jewelry industry. Results showed that the initial silver refinery microorganism performed only in terms of Pseudomonas genus especially in AgNO3 solution. In contrast Bacillus genus was not clearly effective silver refinery. These results could be the basis information for establish and develop system for silver refinery and/or silver quality improvement with biological process especially microorganisms in future.

This study examined the efficacy of two sanitizers; peroxyacetic acid (PAA) and sodium hypochlorite (NaOCl) in reducing total microbial counts on the carved leaf-shape surface of five types of fruits and vegetables: pumpkin carrot radish cantaloupe and Japanese cucumber. The samples were dipped for 3 or 5 min in various concentrations of PAA (40 60 or 80 mg/L) and NaOCl (50 or 75 mg/L) with distilled water as the control. After dipping the samples were drained for 5 min and the total plate counts were determined in triplicate. Dipping in 60 mg/L of PAA for 3 min was the best treatment for reducing microorganisms on the surface of carved carrot and radish; and 80 mg/L of PAA for 5 min was the best treatment for reducing microorganisms on the surface of carved pumpkin cantaloupe and Japanese cucumber. PAA at concentration 60 -80 mg/L showed potential as an effective sanitizer for carved fruits and vegetables more so than both concentrations of NaOCl.

This article presents a collection of studies relating to the development of technologies using hydrogen with compressed natural gas or Hydrogen-enriched Compressed Natural Gas (HCNG). Regarding to the issues of mixing ratio the data show that the appropriated amount of hydrogen falls between 20%-30% by volume in order to balance any tradeoff between engine performance and emissions. The equivalent ratio can be adjusted to be as low as 0.5-0.6. The ignition timingmust also be retarded (Ignition Delay) by averagely 5 degrees of crankshaft rotation to compensate for the change of burning speed. Theuse of 20%-30% of hydrogen by volume decrease both HC and NOx as compared to the use of CNG alone. In terms of the fuel system design the individually-stored gas injection system is of interest. It provides flexibility especially for the adjustment of the fuel composition for optimum ration in any operating conditions. But at present there is no commercial development of such system.