15 articles in this issue
Fakhili Gulo
A novel octahedral niobium cluster oxychloride compound, Cs2Sc3Nb12Cl27O8 was synthesized by solid-state route techniques from stoichiometric mixture of CsCl, Sc2O3, Nb, NbCl5, and Nb2O5, heated at 700 °C for two days. The crystal structure was determined... see more
Eddy Heraldy,Triyono Triyono,Karna Wijaya,Sri Juari Santosa
Attempts to synthesis of Mg/Al HTlc using magnesium from several raw material resources are widely investigated. One of raw material would purpose as source of magnesium to synthesis of Mg/Al HTlc is brine water which is well known as the desalination pro... see more
Meytij Jeanne Rampe,Bambang Setiaji,Wega Trisunaryanti,Triyono Triyono
Structure and chemical composition of coconut shell carbon with polyvinyl alcohol (PVA) as the stimulant through the observation of TG-DTA, SEM-EDS and FTIR has been studied. The process was carried out by calcining coconut shell charcoal at the temperatu... see more
Anissa A. Putri,Tutik D. Wahyuningsih,Indriana Kartini
Rod and chrysanthemum-like nanostructured ZnO thin film have been prepared hydrothermally in NaOH and NH3 solution utilizing zinc nitrate hexahydrate as the precursor. ZnO thin films were grown on ITO glass substrate with the seed layer of zinc oxide. Per... see more
Prasetyo Hermawan,Harno Dwi Pranowo,Indriana Kartini
Ni(II) doped titanium dioxide has been prepared by using sol-gel process. Ni(II) ion was incorporated into titanium dioxide by reacting Ni(II) chloride with titanium tetraisopropoxide (TTiP)-acetyl acetone mixture in isopropanol solvent. The effects of tr... see more
Bambang Sri Kaloko,Soebagio Soebagio,Mauridhi H. Purnomo
Analytical models have been developed to diminish test procedures for product realization, but they have only been partially successful in predicting the performance of battery systems consistently. The complex set of interacting physical and chemical pro... see more
Hemant Panwar,Shishupal Singh
3-Aryl-5H,13aH-quinolino(3,2-f)(1,2,4)triazolo(4,3-b)(1,2-diaza-4-sulpho)azepines [2a-i] have been prepared by the cyclisation of 5-aryl-4-amino-3-mercapto-1,2,4-triazole by reaction with 2-chloro-3-formylquinoline in catalytic presence of p-toluene sulph... see more
Leenawaty Limantara,Heriyanto Heriyanto
The determination of photostability for Mg-BChl a, Zn-BPheo a and Cu-BPheo a irradiated with red light (= 630 nm, 870 lux) and equilibrated with air for 20 min in acetone-water and methanol-water solvents at various percentages of water has been done. The... see more
Andi Hairil Alimuddin,Muhammad Idham Darussalam Mardjan,Sabirin Matsjeh,Chairil Anwar,Mustofa Mustofa,Eti Nurwening Sholikhah
Eugenol from the isolation of clove leaves oil had been utilized in the synthesis of 7-hydroxy-3',4'-dimethoxy-isoflavone based on deoxybenzoin intermediate. The raw material was firstly converted into methyleugenol using DMS (89.87%). Secondly, methyl eu... see more
Muharni Muharni,Elfita Elfita,Amanda Amanda
Garcinia xanthochymus (Guttiferae) commonly known as gamboge, is a perennial medicinal plant native to the north of Thailand and Myanmar. Gamboge is used in watercolors, as a yellow fabric dye and traditional medicine for treating diarrhea and dysentery, ... see more
Hasri Hasri,Mudasir Mudasir,Nurul Hidayat Aprilita,Roto Roto
An application of Saccharomycess cereviceae biomass immobilized on chitosan (SC-Chi adsorbent) for Pb(II) ion removal was demonstrated. Adsorption experiment was conducted at various mass ratio of Saccharomycess cereviceae biomass to chitosan, contact tim... see more
Susilawati Susilawati,Sabirin Matsjeh,Harno Dwi Pranowo,Chairil Anwar
Mahkota dewa plant (Phaleria macrocarpa (Scheff.) Boerl.) which is included into family of Thymelaeaceae is one of Indonesia's traditional medicines. Chemical constituent has been isolated from ethyl acetate extract of leaves of mahkota dewa. Sample was e... see more
Triana Kusumaningsih,Jumina Jumina,Dwi Siswanta,Mustofa Mustofa,Keisuke Ohto,Hidetaka Kawakita
Synthesis, characterization and adsorption test of poly-tetra-p-propenyl-tetrahydroxycalix[4]arene for cadmium ion had been done. The synthesis was carried out in five steps, which were (1) synthesis of p-t-butylcalix[4]arene from p-t-butylphenol, (2) deb... see more
Desi Suci Handayani,Jumina Jumina,Dwi Siswanta,Mustofa Mustofa,Keisuke Ohto,Hidetaka Kawakita
The aim research is application of poly-5-allyl-calix[4]arene tetra carboxylic acid as adsorbent of heavy metal cations. Adsorption was carried out towards Pb(II), Cd(II) and Cr(III) ions in batch system. Several variables including pH, contact time and i... see more
Salprima Yudha S.,Eka Angasa,Sri Ningsih,Syalfinaf Manaf,Suli Anggria Murni,Fatan Umbara
A methanol soluble fraction extracted from Kayu Manik leaves (Trema orientalis) from Seluma, Bengkulu, exhibited an antiradical activity 69.73% (scavenging activity of the stable 1,1-diphenyl-2-picryl hydrazyl (DPPH) free radical) that was almost similar ... see more