22 articles in this issue
Purwantiningsih Sugita,Rini Siswati Asnel,Budi Arifin,Tuti Wukirsari
Chitosan-alginate membrane diffusion behavior has been investigated for its application in drugs delivery system. Ketoprofen diffusion behavior assay were performed at 37 and 42 °C to membrane thickness (h) and donor cell concentration of ketoprofen varia... see more
Herry Poernomo
The experiment of sorption and dispersion characteristics of strontium in the mixture of bentonite-quartz, clay-quartz, bentonite-clay-quartz as candidate of raw material for backfill material in the radioactive waste repository has been performed. The ob... see more
Aris Mukimin,Karna Wijaya,Agus Kuncaka
A cylinder modified electrode of the ß-PbO2 was fabricated by anodic electro-deposition method on titanium substrate. The PbO2 layer prepared from high acid solution (pH: 0.3) that contains a mixed of 0.5 M Pb(NO3)2, 1 M HNO3, and 0,02 M NaF. The physicoc... see more
Mashuni Mashuni,M. Syahrul,A. Ahmad,A. W. Wahab
In recent years, instead of their potential hazard to human health, carbamic pesticides are widely used in agriculture. Therefore, there is a growing interest in rapid and accurate determination for food safety and environmental monitoring. The aim of thi... see more
Miratul Khasanah,Mudasir Mudasir,Agus Kuncaka,Eko Sugiharto,Ganden Supriyanto,Siti Wafiroh
The sensitivity and selectivity of voltammetric sensor for uric acid can be improved by modifying the working electrode using a polymer with a molecular template (molecularly imprinted polymer, MIP). Polymer and MIP was synthesized from methacrylic acid (... see more
Uripto Trisno Santoso,Sri Juari Santosa,Dwi Siswanta,Bambang Rusdiarso,Shogo Shimazu
Sorbent produced through immobilization of humic acid (HA) on chitosan using glutaraldehyde as cross-linking agent and Pb(II) ions as active site protector has been characterized. Active sorption site of HA was protected by reacting HA with Pb(II) ion, an... see more
Suyanta Suyanta,Narsito Narsito,Endang Tri Wahyuni,Triyono Triyono,Sutarno Sutarno
Researches about the effects of aging time toward crystallinity of products in the synthesis of mesoporous silicates MCM-41 have been done. MCM-41 was synthesized by hydrothermal treatment to the mixture of sodium silicate, sodium hydroxide, cetyltrimetyl... see more
Ahmad Fatoni,Soerja Koesnarpadi,Nurlisa Hidayati
Synthesis, characterization and application of Diatomaceous Earth-4,4-Diamino diphenylether-O-Hydroxybenzaldehyde (diatomaceous earth-DDE-O-Hb) as an adsorbent of Ag(I) metal ion has been done. The aim of the purification of natural diatomaceous earth wit... see more
Sunardi Sunardi,Yateman Yateman Arryanto,Sutarno Sutarno
Preparation, activation and adsorption study of natural kaolin from Tatakan, Tapin, South Kalimantan have been conducted. The activation of kaolin was done using 6 M HCl solutions at 90 °C for 3 h. The characterizations of kaolin were carried out by Fouri... see more
Sri Kadarwati,Sri Wahyuni,Wega Trisunaryanti,Triyono Triyono
Preparation, characterization, and catalytic activity test of Ni-Mo/natural zeolite on pyridine hydrodenitrogenation were carried out. Preparation of catalyst was conducted by impregnation method using nickel nitrate hexahydrate and ammonium heptamolibdat... see more
Z.H. Tengku Faisal,Faisal Amri,H. Salmah,Iqmal Tahir
Natural lignocellulosics have an outstanding potential as reinforcement in thermoplastics. Coconut shell is one of natural lignocellulosic material. In this study, coconut shell (CS) was use as filler in low density polyethylene (LDPE) composites. The eff... see more
Nino Rinaldi
A study of the influence of citric acid (CA) addition by a post-treatment method during the preparation of a series of Mo/Al2O3 catalysts on the thiophene HDS activity was conducted. The Mo/Al2O3 catalysts were also prepared by a chemical vapor deposition... see more
Stefanus Layli Prasojo,Fajar Agung Dwi Hartanto,Nunung Yuniarti,Zullies Ikawati,Enade Perdana Istyastono
The docking protocols to virtually screen selective cyclooxygenase-2 (COX-2) ligands using PLANTS docking software were developed and validated. The crystal structure of 1-phenylsulfonamide-3-trifluoromethyl-5-parabromophenyl-pyrazole (S58) binds to cyclo... see more
Ponco Iswanto,Ria Armunanto,Harno D. Pranowo
Structural properties of Iridium(III) hydration have been studied based on an ab initio Quantum Mechanical Charge Field (QMCF) Molecular Dynamics (MD) Simulations. The most chemical-relevant region was treated by ab initio calculation at Hartree-Fock leve... see more
Amanatie Amanatie,Jumina Jumina,Mustofa Mustofa,M. Hanafi,Ria Armunanto
Xanthones and their derivatives have been reported to exhibit inhibitory activities towards Plasmodium falciparum. To provide deep insight into the correlation between inhibitory activities and structures of xanthones, linear regression method was employe... see more
Yohanes Buang
The effects of dietary adenine in fatty liver induced by orotic acid (OA) were studied. Rats were paired-fed 1% OA-supplemented diets with/or without 0.25% adenine or a diet without OA for 10 days. Serum lipid profiles were measured using enzyme assay kit... see more
Hamzah Fansuri,Gia Hung Pham,Sandra Wibawanta,Dong-ke Zhang
In order to examine the effect of phosphorus addition on the activity and selectivity of bismuth molybdate catalysts for partial oxidation of propylene to acrolein, three modes of phosphorus addition were performed. The three modes of Preparation were per... see more
Chetna Ameta,Diwaker Sitha,Rajat Ameta,Suresh C. Ameta
Synthesis of triazole derivatives from 2-mercaptobenzothiazole has been achieved in four steps under microwave irradiation. LiBr potentially replace solvents and corrosive acids in this reaction scheme. The products of triazole derivatives have shown anti... see more
Suman Malik,Supriya Das,Bharti Jain
Omeprazole (OME) is a proton pump inhibitor (PPI). PPIs have enabled to improve the treatment of various acid-peptic disorders. OME is a weak base and it can form several complexes with transition and non-transition metal ions. In the present paper, we ar... see more
Djoko Agus Purwanto,Retno Pudji Rahayu,A. Toto Purnomo
Green tea and its polyphenols have been studied extensively as cancer chemopreventive agents in recent years. However, the mechanisms of action are still not clearly understood. Some researchers suggest that immune system plays important role to destroy c... see more
Abdullah Abdullah,D.R. Wicakso,A.B. Junaidi,Badruzsaufari Badruzsaufari
Nitration of biodiesel from Jatropha curcas oil using mixture of HNO3 and H2SO4 had been done in an attempt to obtain a cetane improver or cetane number enhancer. The nitration was carried out by varying the numbers of moles of sulphuric acid, nitric acid... see more
Tatas H.P. Brotosudarmo,Richard J. Cogdell
Photosynthesis provides an example of a natural process that has been optimized during evolution to harness solar energy efficiently and safely, and finally to use it to produce a carbon-based fuel. Initially, solar energy is captured by the light harvest... see more