20 articles in this issue
H. Rosniza,M. A. Bakar,S. Abdul Hamid,J. Ismail
A nanocomposite comprising cyclopentyl trisilanol silsesquioxanes (CpSSQ(OH)3) and 50% epoxidized natural rubber (ENR-50) was prepared at reflux temperature with Tin (II) chloride dihydrate (SnCl2.2H2O) as catalyst. SnCl2.2H2O was found to be an affective... see more
Daud K Walanda
Lithiated phase LiMn2O4 is a potential cathode material for high-energy batteries because it can be used in conjunction with suitable carbon anode materials to produce so-called lithium ion cells. The kinetic transformation of LiMn2O4into manganese dioxid... see more
Silvester Tursiloadi,Dinie Mansur,Yeny Meliana,Ruslan Efendi
Stable anatase is attractive because of its notable functions for photocatalysis and photon-electron transfer. TiO2-nanoparticles dispersed SiO2 wet gels were prepared by hydrolysis of Ti(OC4H9n)4 and Si(OC2H5)4 in a 2-propanol solution with acid ca... see more
H. L. Lee,M. Abu Bakar,J. Ismail,A.M. Issam
Nanocomposites comprising diol-vanilin and cadmium sulfide (CdS) has been synthesized via chemical precipitation method in ethanol at refluxed temperature (160 oC) for 12 hours. CdCl2. 2.5H2O and thiourea as cadmium and sulfide precursors respectively wer... see more
Ermin Katrin Winarno
The degradation study on 2-chloroaniline (2-ClA) used as a model of water pollutant by ozonation was performed. The change of spectrum and substrate concentration of treated solutions were measured by spectrophotometer as we... see more
Agustin Sumartono,Winarti Andayani
Degradation of erionil red dye using photo catalytic processes with TiO2-zeolit as a catalyst was carried out. Degradation of the dye was observed in 10 L volume, and erionil red dye was used as a model of organic pollutant. The parameters examinated were... see more
Suwardi Suwardi
Relation between pore model and center-line temperature of high burn up UO2 Pellet. Temperature distribution has been evaluated by using different model of pore distribution. Typical data of power distribution and coolant data have been chosen in this stu... see more
Harno Dwi Pranowo
Monte Carlo simulations were performed for I-, Br- and Cl-, in water using ab initio pair potential. The systems consisting of one anion in 215 solvent molecules have been simulated at 298 K. Anion-water pair potentials have been newly developed based on ... see more
Bambang Rusdiarso
Distribution of A and B isomers of crown-ether DC18C6 on their organic and water phases (chloride, nitrate and sulphocyanide salts) and extraction of alkali and earth alkali metals has been studied. In LiCl 0.1 M environment, lithium extraction could be i... see more
Firdaus Firdaus,Jumina Jumina,Hardjono Sastrohamidjojo
The conversion of p-(amino)butoxycalix[4]arene, 1, to p-(acetamido)butoxy-calix[4]arene, 2, and p-(benzamido)butoxycalix[4]arene, 3, via acetylation and benzoylation reactions, respectively have been conducted. The acetylation reactions was conducted by r... see more
Maming Maming,Jumina Jumina,Dwi Siswanta,Hardjono Sastrohamidjojo
The research on transport of Cr3+, Cd2+, Pb2+, and Ag+ through bulk liquid membrane using p-tert-butylcalix[4]arene-tetracarboxylic acid as ions carrier has been conducted. The aims of this research were to determine optimum condition, efficiency, and sel... see more
C. W. Oo,K. Jain
Adsorption of Cr3+ from aqueous solution by Rhizophora apiculata tannins was investigated in batch shaking experiments. Tannins extracted from R. apiculata mangrove barks was chemically modified with formaldehyde in the basic solution of sodium hydroxide.... see more
Imam Santoso,Buchari Buchari,M. Bachri Amran,Aminudin Sulaeman
The aim of this research is to study the effect of concentration carrier, pH and time of extraction on separation's factor of penicillin g - phenyl acetate by reactive extraction technique. The 10 mL aqueous solution with variation of pH... see more
Mohammed Hadi Al–Douh,Shafida Abd Hamid,Hasnah Osman
The reaction of Benzyl o-vanillin 1 and o-phenylene diamine 2 in dichloromethane produced new benzimidazole, 3. The complete assignments of 3 were made using 1D and 2D NMR including COSY, HMQC and HMBC NMR in CDCl3 and acetone-d6. The coupling constants J... see more
Ruslin Hadanu,Sabirin Mastjeh,Jumina Jumina,Mustofa Mustofa,Mahardika Agus Widjayanti,Eti Nurwening Sholikhah
Synthesis of (1)-N-(4-methoxybenzyl)-1,10-phenanthroline bromide from 1,10-phenanthroline monohydrate and 4-methoxybenzaldehyde as starting material and evaluation of its antiplasmodial activities have been carried out. The 4-methoxybenzyl alcohol was pre... see more
Hadi Poerwono,Yoshiyuki Hattori,Hajime Kubo,Kimio Higashiyama
Andrographolide, a diterpenoid lactone isolated from the herb of Andrographis paniculata and known to possess antitumor activity in breast cancer models was subjected to semisynthesis leading to the preparation of a number of derivatives. After protection... see more
Nursiah La Nafie
Problem associated with Polycyclic Aromatic Hydrocarbons (PAHs) contaminated site in environmental media have received increasing attention. To resolve such problems, innovative in situ methods are urgently required. This work investigated the feasibility... see more
Y Anita,M Hanafi,AMJ Putra,S Arifin,Y Usuki,H Iio
UK-3A is secondary metabolite of Streptomyces sp.517-02 which has IC50 38 µg/mL against P388 Murine Leukemia cells. An analogue of UK-3A was synthesized from L-methyl serine as the starting material by amidation and esterification. An analogue UK-3A was a... see more
Suarni Suarni,Tj. Harlim,Ambo Upe,Abd R. Patong
Technology is required in making new product of maize flour. Enzymatic modification of three varieties of maize flours i.e. MS2, Srikandi and Local product has been conducted using a-amylase from mung bean sprouts has been carried out in Laboratorium Biop... see more
Teuku Beuna Bardant,Kiky Corneliasari Sembiring,Achmad Hanafi Setiawan
The goal of these preliminary studies is to support Indonesian program for increasing palm oil added value through independent production technology based on Indonesian natural resources. Various palm oil derivatives could be synthesized enzymatically usi... see more