A phytochemical investigation of the crude extracts of the bark and leaves of Calophyllum symingtonianum has resulted in the isolation of inophyllum D, inophyllum H, calanone, isocordato-oblongic acid, amentoflavone, carpachromene and lupenone. Their chemical structures were elucidated and confirmed by spectroscopic analysis. All flavonoids and cou

Due to the significant nature of private housing project to public at large, housing developments in Malaysia is governed by stringent laws and regulations with the main purpose of protecting the interests of buyers. Despite the existence of these legal instruments, complaints on housing-related problems remain one of major consumers' complaint

Objective: To screen the antioxidant, cholinesterase and tyrosinase enzymatic inhibition activities of the leaves and heartwood of Calophyllum symingtonianum (C. symingtonianum), and the bark of Calophyllum depressinervosum (C. depressinervosum). Methods: Samples of leaves and heartwood of C. symingtonianum and bark of C. depressinervosum were test

Soda lime glass is widely used in optics, chemical apparatus, camera lens, micro gas turbines, light bulbs etc. on account of its high hardness, corrosion resistance, and excellent optical properties. These require high dimensional accuracy and flawless surface finish. However, soda lime glass is inherently brittle leading to subsurface crack propa

A simple and economical route based on a ZnCl2 mediated process was developed to synthesize hierarchical flower-like ZnO micro/nanoflakes on the surface of copper foil by 2 stages electrodeposition method (2M ZnCl2 – 0.5M ZnCl2). The prepared flakes were characterized by XRD and SEM. The morphology of ZnO can be tuned from simple isolated nanofla

Calophyllum is a pan-tropical genus belongs to the Guttiferae family and locally known in Malaysia as “bintangor”. There has been a continual interest to further investigate the phytochemistry of Calophyllum spp since this genus is a rich source of active secondary metabolites. In this study, antioxidant, cholinesterase and tyrosinase enzymatic

The paper aims to provide an overview of the potential liability of a manufacturer or distributor or other persons in the chain of product distribution for supplying unsafe or substandard medical devices and for any damage caused by a defect in the device. Just like other products, medical devices are also subject to the law of product safety and p

Online shopping has become a trend and manifestation of modern consumer life style in recent years. Despite the advantages, many consumers are not aware of the potential hazards of online shopping. The consumers really need to take extra precaution before participating in any online transactions. They should at least be equipped with basic knowledg

In this investigation, the potential of powdered activated carbon (PAC) derived from empty fruit bunch (EFB) precursor through pyrolysis method for chemical oxygen demand (COD) adsorption from biotreated palm oil mill effluent (POME) was extensively studied. The PAC was prepared and characterized using scanning electron microscope (SEM), Fourier tr

This paper investigates a pilot desalination system which consists of a direct expansion solar assisted heat pump (DXSAHP) coupled to a single-effect evaporator unit. The working fluid used is R134a and distillate is obtained via falling film evaporation and flashing in the unit. Experiments have been conducted in both day and night meteorological