To improve water management for increasing rice productivity, the study of crop water demand is very important. This study aims to estimate the water requirement of rice by using direct measurement method (water balance conception method). The observation was undertaken in a small experimental paddy field, which has an area of 2650m2, located in Cambodian Agricultural Research and Development Institute (CARDI) in Cambodia. For Phka Rumduol variet

Situated in Kandal province of Cambodia with lower Bassac river as a border with Vietnam, a village of Koh Thom district called Prek Chrey Khnong with a population of several hundred families faces lack of drinking water sources especially during dry season due to the existence of elevated arsenic level (3–53 times higher than CDWQS) in pipe well water and the presence of bacteria in surface water. To solve this problem, a sustainable arsenic rem

The recent research has shown the bloom toxic of cyanobateria in Sesan River which is one of the largest tributaries of Mekong River. The bloom toxic of cyanobacteria released cyanotoxin which is the serious problem causing adverse health effects for the local people along the river since this river is the main source for daily use. Therefore, the condition growth of cyanobacteria and sources of contamination were investigated after this research

In Cambodia, the fermentation of different kinds of vegetables such as cucumber, Cambodian melon, green mustard and cabbage uses spontaneous fermentation process by which sugars are converted into lactic acid by lactic acid bacteria (LAB) naturally present on the skin of vegetables.Eventhough LAB were used, the type of LAB might be different for each vegetable. The types of LAB in these fermented vegetables have not yet been investigated so far.

Biodiesel is a renewable green fuel obtained through the transformation of animal and vegetable fats, as well as used oil. This biodiesel can replace fossil diesel. The production of biodiesel from recycled oils is comparable in quality to that virgin vegetable oil biodiesel with an added attractive advantage of being lower in price. The current research was therefore to study the production of biodiesel from used frying oil for fried banana in P

To fulfill the increasingly stringent emission regulations, several technologies have been developed in the past to eliminate pollutants from the exhaust gas of diesel-powered engines. Around this subject matter, a lot of research efforts have been put to find suitable catalytic systems and to understand the mechanistic backgrounds of chemical processes on the catalytic surface. One technology for NOx reduction in vehicles as well as in other com

17-α-ethynylestradiol (EE2) biodegradation was conducted using biofilm reactor in a medium containing both EE2 and glucose as organic carbon sources and in a medium without glucose and EE2 as the sole organic carbon source. The factors affecting the biodegradation are initial pH, initial EE2 concentration, initial nitrogen content, and biomass volume. Response surface methodology (RSM) and central composite design (CCD) were applied to determine

River bank stability is very sensitive to the variation of the water level (WL) of the river. This is the case along the Lower Mekong River which WL change between dry and wet seasons is about 10m. This paper presents a study of river bank stability subjected to variations of the water level. Dupuit assumption is supposed to find the variation of WL in the soil using a numerical solution by an explicit finite difference method. The mass sliding S

Spatial distribution of soil data is a current issue with which most of areas are being faced. Imba-Numa watershed, Japan, is also one among those areas which lack of spatial data of soil parameters. This study aims to generate spatially distribution of soil properties which consist of soil particles, total carbon, total nitrogen and Bulk density in Imba-Numa watershed. Three geostatistical interpolation methods: Ordinary Kriging (OK), Universal

La Khmer Brewery Limited (KBL) produit 5 tonnes des résidus de levures par jour qui pourront être très polluants pour environnement. Le but de ce travail est de valoriser des résidus de levures en les transformant en biogaz par la méthode de fermentation anaérobie continu sous forme liquide à température en mésophile, une comparaison a été faite entre le rendement du biogaz produit de processus de fermentation à partir les résidus de levures en p