iKnow

Effect of Particle Size on Production of Citric Acid from Oil Palm Empty Fruit Bunches as New Substrate by Wild Aspergillus Niger
Research Output | Dar Al-hikmah Library | IIUM Only

An investigation was carried out to evaluate the effect of different particle size of oil palm empty fruit bunches (EFB) and their distribution as new substrate for the production of citric acid through solid state bioconversion (SSB) in laboratory scale by Aspergillus niger. The experiment was carried out to observe the productivity of citric acid

Role of Chip Serration Frequency in Chatter Formation During End Milling Operation of Stainless Steel
Research Output | Dar Al-hikmah Library | IIUM Only

Experimental investigations have been conducted on the chips and common types of discreteness in the form of serrated saw teeth (primary or secondary) have been identified. It has been observed that the chip formation process has a discrete nature, associated with the periodic shearing process of the chip during machining of stainless steel. Mechan

Studies on Pema Based Solid Polymer Electrolytes
Research Output | Dar Al-hikmah Library | IIUM Only

Solid polymer electrolytes comprising of various weight ratios of poly(ethyl methacrylate) (PEMA) and lithium perchlorate (LiClO4) salt were prepared via solution casting technique using N,N-Dimethylformamide (DMF) as the solvent. The conductivity values of the electrolytes were determined utilizing Solatron 1260. The highest conductivity obtained

in-Situ Method to Monitor Surface Reaction/oxidation at High Temperature
Research Output | Dar Al-hikmah Library | IIUM Only

The formation of external Cr2 O3 scale is important to obtain the oxidation resistance of Fe-Cr alloys at high temperatures. It is well known that the critical concentration of Cr to form protective external scale of Cr2 O3 in humid condition is higher than that in dry condition, and the criterion of this concentration is expressed as Wagner’s eq

Evaluation of Oxygen Surface Potential at Early Stage of Oxidation in Dry and Water Vapor Condition at 1073 K
Research Output | Dar Al-hikmah Library | IIUM Only

Hanafi [1] and Asep [2] et. al. have shown that the presence of water vapor in oxidation environment enhances the oxygen transport along the precipitates oxide/metal interface. This explains the reason of accelerated oxidation rates and anomalous oxidation behavior in water vapor condition. Oxygen potential on the surface of oxide during the oxidat

Increase of Oxygen Permeability on Metal/oxide Interface During High Temperature Oxidation of fe-Cr Alloys in Water Vapor at 1073 K
Research Output | Dar Al-hikmah Library | IIUM Only

Many studies1-3 have shown that oxidation rates in humid environment are higher than in dry environment. The formation of Cr2O3 scale during high temperature oxidation is beneficial in protecting metals from severe oxidizing environment. A dilute solid solution, such as Fe-Cr alloy with small Cr concentrations, forms internal oxide of Cr2O3 when ex

Kinetics of Solid State Bioconversion for the Production of Citric Acid from Oil Palm Empty Fruit Bunches (Abstract Only)
Research Output | Dar Al-hikmah Library | IIUM Only

A kinetic study of solid state bioconversion for the production of citric acid from oil palm empty fruit bunches was conducted. Locally isolated Aspergillus niger IBO-103MNB (IMI396649) was used for this study. As citric acid production typically exhibits product-associated kinetics, both fungal growth in term of protein content and citric acid pro

Loji Nuklear Pembekal Utama Tenaga Dunia Masa Depan
Research Output | Dar Al-hikmah Library | IIUM Only

Discussing the relevancy of nuclear power plant.

Lignocellulolitic Enzymes Production: an Important Phenomenon for the Production of Citric Acid from Lignocellulosic Substrate Through Solid State Bioconversion
Research Output | Dar Al-hikmah Library | IIUM Only

An investigation was carried out to determine the production of lignocellulitic enzymes: ligninase and cellulases (exo-cellulase and edo-cellulase) and their effects during the bioconvertion of empty fruit bunches (EFB) for the production of citric acid. The result shows that the maximum production of citric acid was 181.25 g/kg of dry EFB from A.

Prediction of Tool Life and Experimental Investigation During Hot Milling of Aisi H13 Tool Steel
Research Output | Dar Al-hikmah Library | IIUM Only

This paper presents the results of experimental investigations conducted on a vertical machining centre (VMC) using spindle speed, feed rate, and depth of cut as machining variables to ascertain the effectiveness of TiAlN insert in end milling of hardened steel AISI H13, under workpiece preheated conditions and hence a statistical model was develop

KCDIOM

KM Portal

Category

KCDIOM

Type

KCDIOM

KM Portal