This paper presents a detailed analysis of semiconductor device selection for a buck converter, emphasizing the optimization of MOSFETs and diodes to enhance performance and efficiency. The study evaluates three MOSFETs (IRFZ44N, IRFZ46N, and Si4410DY) in combination with three diodes (MBRS340, MBR745, and B550C) to assess their influence on converter efficiency, voltage ripple, and output stability. Comprehensive calculations for passive compone

Sandstone was widely used in Cambodian ancient structures such as temples, bridges, and statues. However, studies on its mechanical properties including tensile strength, Young’s modulus, and Poisson’s ratio remain insufficiently studied. This study aims to determine the mechanical properties of Cambodian sandstone. Brazilian tests coupled with the Digital Image Correlation (DIC) method, were conducted on seven samples of sandstone to find the te

Rice is a staple crop in Asia. In Cambodia, agroecological practices were introduced in Preah Vihear Province, testing organic systems with conventional tillage and no agrochemical inputs (CT) and cover cropping as green manure (GM) between rice cycles to enhance soil fertility and yield. This study compared the yield and quality of six Cambodian rice varieties (Phka Rumduol and the other five local cultivars) across 17 biplot systems (CT/GM). We

Air pollution is a growing environmental and public health concern in rapidly urbanizing cities such as Phnom Penh, Cambodia, where motorcycles account for over 80% of registered vehicles. Despite their dominance, localized data on motorcycle emission characteristics particularly under cold-start conditions remain limited, hindering evidence-based air quality management. This study quantifies particulate matter (PM) emissions from motorcycles dur

Salmonella is the most common cause of salmonellosis, a foodborne infection that is transmitted by consuming contaminated food. It is becoming more prevalent worldwide, particularly in Cambodia. Additionally, Salmonella is recognized as one of the drug-resistant bacteria, posing serious public health problems that spread quickly due to the misuse and overuse of antibiotics in healthcare, livestock husbandry, and agriculture. Therefore, the purpos

Phka Rumdoul is a premium aromatic rice variety highly valued in Cambodia for its fragrance, primarily attributed to 2-Acetyl-1-pyrroline (2-AP). The intensity of this aroma varies across regions, suggesting strong environmental and agronomic influences. This study investigated the impact of different agro-systems on 2-AP accumulation in Phka Rumdoul by examining the relationship between soil’s physicochemical properties and grain 2-AP content. S

Rice is the staple food and the most important agricultural crop in Cambodia, yet yields remain constrained by a range of biotic and abiotic stresses. Among these, the root-knot nematode Meloidogyne graminicola (M. graminicola) is a major soil-borne pest that causes considerable rice yield losses across Asia, including Cambodia. Sustainable and environmentally friendly management approaches are therefore essential, with resistant cultivars recogn

This research study investigates the correlation between the Dynamic Cone Penetrometer (DCP) and the California Bearing Ratio (CBR) for subgrade soil material in Cambodia, which is essential for optimizing road pavement design. In Cambodia, there is a lack of a localized standard correlation equation customized to its unique soil and environmental conditions for estimating CBR value using DCP. This gap is particularly relevant with the recent req

Rice (Oryza sativa L.) is a vital global staple, with aroma being a key factor in its market value. The compound 2-acetyl-1-pyrroline (2-AP) is the primary contributor to the fragrance of aromatic rice. However, storage conditions significantly impact the aromatic and nutritional quality of rice. This study evaluated the effects of temperature and duration on 2-AP retention, protein stability, and moisture content in Cambodia’s fragrant Phka Rumd

Pesticides are essential tools for agricultural productivity, yet their inherent toxicity and high mobility pose significant environmental and health risks. This study investigates the mechanisms of hydraulic transport for soluble pesticides within Cambodia's major river systems: the Bassac (BSR), Tonle Sap (TSR), and Mekong (MKR). Our analysis integrates a re-analysis of published data from 48 surface-water samples (May-June 2020, covering BSR a