15 articles in this issue
Agustina Setiawati,Florentinus Dika Octa Riswanto,Sri Hartati Yuliani,Enade Perdana Istyastono
The publicly available enhanced data of ligands and decoys for estrogen receptor alpha (ERa) which were recently published has made the retrospective validation of a structure-based virtual screening (SBVS) protocol to identify ligands for ERa possible. I... see more
Riyanto Riyanto,Ahmad Safarudin
Preparation and application of platinum composite microelectrode (PCM) for the routine analysis of acetaminophen in pharmaceutical products has been carried out. This electrode was prepare by Pt powder and PVC in 4 mL tetrahydrofuran (THF) solvent and swi... see more
Deni Swantomo,Rochmadi Rochmadi,Kris Tri Basuki,Rahman Sudiyo
Controlled Release Urea Fertilizers-based hydrogels matrices was synthesized by graft copolymerization of acrylamide onto the rice straw cellulose backbones in the presence of silica fillers using simultaneous graft copolymerization by gamma irradiation a... see more
Oman Zuas,Jin Seog Kim,Jarnuzi Gunlazuardi
In this report, the results from a study on the influence of operational parameters on TiO2 photocatalytic activity for CO2 reduction under an ultraviolet-visible (UV-vis) illumination are presented. The results indicated that the TiO2 was found to be act... see more
F. Widhi Mahatmanti,Nuryono Nuryono,Narsito Narsito
Recently, development of film materials is focused on finding the films with high chemical and physical stabilities. Organic based material such as chitosan produces films with low physical stability, and hence addition of inorganic materials necessary. I... see more
Asalil Mustain,Gede Wibawa,Mukhammad Furoiddun Nais,Miftakhul Falah
The zeolite NaA has been successfully synthesized from the low grade natural zeolite with high impurities. The synthesis method was started by mixing natural zeolite powder with NH4Cl aqueous solution in the reactor as pretreatment. The use of pretreatmen... see more
Dian Maruto Widjonarko,Jumina Jumina,Indriana Kartini,Nuryono Nuryono
A new phosphonate modified silica (PMS) has been investigated for adsorption of Co(II), Ni(II), Cu(II), and Zn(II) in aqueous solution. The adsorbent was modified of silica by immobilizing aminoethyl dihydrogen phosphate (AEPH2) on 1,4-dibromobutane graft... see more
Abu Masykur,Sri Juari Santosa,Dwi Siswanta,Jumina Jumina
The aims of this research is to synthesize Pb(II) imprinted polymers with carboxymethyl chitosan (CMC) as polymers and bisphenol A diglycidyl ether (BADGE) as cross-linker (Pb-IIP). Chitosan (CTS), non imprinted polymer (NIP) and Pb-IIP were characterized... see more
Budiana I Gusti M. Ngurah,Jumina Jumina,Chairil Anwar,Mustofa Mustofa,Sahadewa Sahadewa
A new upper rim-functionalized benzoyl C-phenylcalix[4]resorcinaryl octaacetate and cinnamoyl C-phenylcalix[4]resorcinarene have been synthesized and evaluated as the absorbers for ultraviolet radiation. The benzoyl C-phenylcalix[4]resorcinaryl octaacetat... see more
Wulan Tri Wahyuni,Latifah K. Darusman,Aji Hamim Wigena
Split-plot mixture-mixture design has been applied for optimization of Phyllanthus niruri chromatographic fingerprint. The design was applied for unreplicated and simultaneous optimization of extraction mixture and chromatographic mobile phase mixture. Th... see more
Elfi Susanti VH,Sabirin Matsjeh,Mustofa Mustofa,Tutik Dwi Wahyuningsih
5-hydroxy-3',4'-dimethoxy flavone can be efficiently synthesized in two steps via the formation of 2',6'-dihydroxy-3,4-dimethoxy chalcone with good results. 2',6'-dihydroxy-3,4-dimethoxy chalcone as reactants for synthesis of flavones was prepared through... see more
Galuh Widiyarti,Jamilah Abbas,Yulia Anita
Guaiacol, a phenolic compound is known as an anticancer. Dimerization of guaiacol has been done by biotransformation using peroxidase enzyme as biocatalyst. This enzyme was isolated from Indonesian plant, kailan (Brassica oleraceae var. alboglabra). Analy... see more
Jamilah Abbas,Syafruddin Syafruddin
Calophyllum flavoranulum (Clusiaceae family) is a big tree and medical plants from the tropical rain forest of the Indonesian continent. The organic extracts from stem bark yielded phenyl coumarin. The structure was elucidated with the aid of spectroscopi... see more
Imam Khabib,Sri Kadarwati,Sri Wahyuni
The phenomena of catalyst deactivation and the effects of regeneration method on the characteristics and activity of Ni/ZA catalyst after being used in a continuous cracking reaction of polypropylene have been studied. Ni/ZA catalyst was prepared using so... see more
Saprizal Hadisaputra,Lorenz R Canaval,Harno Dwi Pranowo,Ria Armunanto
The roles of counterions, solvent types and extraction temperatures on the selectivity of 18-crown-6 (L) toward alkaline earth salts MX2 (M = Ca, Sr, Ba; X = Cl-, NO3-) have been studied by density functional method at B3LYP level of theory in gas and sol... see more