10 articles in this issue
Harno Dwi Pranowo,Foliatini Foliatini,Karna Wijaya
Research on comparison between Hartree-Fock method and electron correlation methods as well as the effect of size of basis sets on representing interaction of Co2+-NH3 observed from complex energy parameters and optimum geometric parameters have been carr... see more
Bambang Setiaji,Tutik Arindah
Pair potential function of Ni2+-H2O system has been constructed by ab initio method at UHF (Unrestricted Hartre-Fock) level. The basis sets used for energy interaction calculation were LANL2 Double-z ECP of Hay and Wadt for Ni2+ and Double-z Polarization ... see more
Iqmal Tahir,Karna Wijaya,M Utoro Yahya,Muzakky Yapin
Quantitative Structure - Property Relationships (QSPR) analysis of the Melting Point (m.p) of 349 organic compounds using molecular descriptors based on linear regression have been done. The experiment m.p. values were collected from the CRC H... see more
Mustofa Mustofa,Iqmal Tahir,Jumina Jumina
Quantitative Structure-Activity Relationship (QSAR) analysis of 1,10-phenantroline analogs as antimalarial drug has been conducted using atomic net charges (q) as predictors of their activity. Data of predictors are obtained from computational chemistry m... see more
Hasri Hasri,Mudasir Mudasir
The effect of ethanol addition and solution heating on the analytical performance of the determination of ammonia in water by indophenol blue method was studied. The addition of ethanol and solution heating was intended to overcome the problem of reproduc... see more
Mochammad Feri Hadiyanto,Agus Kuncaka
Silver electrodeposition of photo-processing waste and without addition of KCN 1,0 M has been studied for silver recycling. Photo procesing waste containing silver in form of [Ag(S2O3)2]3-... see more
Nuryono Nuryono,Narsito Narsito
In this research, treatment of diatomaceous earth, Sangiran, Central Java using hydrogen chloride (HCl) and sulfuric acid (H2SO4) on kinetics of Cd(II) adsorption in aqueous solution has been carried out. The work was conducted by mixing an amount of grou... see more
Endang Tri Wahyuni,Mudasir Mudasir,Saudur Sinambela
An attempt to decrease Cr(VI) ions in the solution which is more toxic than Cr(III) has performed by assisting the photoreduction of Cr(VI) ions catalysed by oxide Cd(II) supported in the zeolite pores (CdO-zeolite). The research consists of preparation, ... see more
Fatmawati Tahir,Ani Setyopratiwi,Sri Sudiono
Study of thermal effect of coconut cream's ability to adsorb Ca (II) has been done at various temperatures of 49 oC, 59 oC and 80 oC. The adsorption study was performed to check capacity, energy and rate of adsorption by varying the number of initia... see more
Ila Rosilawati,Jumina Jumina,M Muchalal
The synthesis of veratryl cyanide [1-(3,4-dimethoxy phenyl acetonitril] required as an intermediate for the preparation of C-9154 antibiotic derivative was carried out. The starting material used was vanilin, while the reaction steps consisted of (1) meth... see more