21 articles in this issue
Moersilah Moersilah,Dwi Siswanta,Roto Roto,Mudasir Mudasir
A simple, cheap and environmentally friendly analytical method of Cd(II) in the aqueous system has been developed by immobilization of 1-(2-pyridilazo)-2-naphtol (PAN) in poly vinyl chloride (PVC) matrix and nitrophenyl octyl ether (NPOE) as a plasticizer... see more
Yuspian Nur,Eti Rohaeti,Latifah Kosim Darusman
Optical sensor based on incorporation of dithizone and chitosan-silica for the determination of lead (II) ion has been conducted. The optical sensor was made by composite of chitosan and silica in the ratio 2:1. Sol gel technique was chosen to make the me... see more
Muchtaridi Muchtaridi,Elvan Kamal,Anas Subarnas,Abdul Mutalib
The aim of this study is to examine the possible use of ion-exchange resin on Dowex AG 50x8 in separating Y-90 from Sr-90 which then could be applied in the basic of manufacture of producing Sr-90/Y-90 generator for the production of radiopharmaceutical c... see more
Mohammad Rofik Usman,Atiek Rostika Noviyanti,Diana Rakhmawaty Eddy
Photoactivity of titanium dioxide (TiO2) can be improved by turning it into nanoparticles. Synthesis of TiO2 nanoparticles can be done by using hydrothermal method. Hydrothermal method is influenced by types of precursor, hydrothermal conditions, includin... see more
Ratna Ediati,Amirul Mukminin,Nurul Widiastuti
A series of carbon with ZSM-5 mesoporous (ZMC) and Ni/ZMC ZSM-5 templates were synthesized and gravimetrically known its adsorption capacity to H2 gases. ZMC carbon was synthesized using a hard template method at a carbonation temperature of 900 oC with s... see more
Dedri Syafei,Sri Sugiarti,Noviyan Darmawan,Mohammad Khotib
TiO2/C-dot composites were synthesised by sol-gel method and investigated as catalysts for photocatalytic degradation of persistent organic pollutants (perchloroethylene, PCE). The composites photoluminescence properties was shown by visual analysis... see more
Harsojo Harsojo,Lutfi Ayu Puspita,Dedi Mardiansyah,Roto Roto,Kuwat Triyana
A wet synthesis Cu nanowire using CuNO3 as a precursor and hydrazine as a reduction agent and ethylene diamine as a polymer capping agent in excessive sodium hydroxide solution 15 M NaOH has been done. The study was done by varying the volume of hydrazine... see more
Mutia Devi Hidayati,Taslim Ersam,Kuniyoshi Shimizu,Sri Fatmawati
Antioxidant activities of Syzygium polyanthum leaves extracts (methanol, ethyl acetate, dichloromethane and n-hexane) were evaluated by using DPPH (2,2-diphenyl-2-picrylhydrazyl) and ABTS (2,2’-azinobis (3-ethylbenzothiazole-6-sulfonic acid) methods. The ... see more
Dion Notario,Sudibyo Martono,Zullies Ikawati,Arief Rahman Hakim,Fathul Jannah,Endang Lukitaningsih
A simple and rapid high-performance liquid chromatography method was developed and validated for quantifying LEV in human plasma. Chromatographic separation was performed under isocratic elution on a Luna Phenomenex® C18 (150 × 4.6 mm, 5 µm) column. The m... see more
Budiana I Gusti M. Ngurah,Jumina Jumina,Chairil Anwar,Sunardi Sunardi,Mustofa Mustofa
The present study was aimed to synthesize and evaluate sunscreen activity of C-methylcalix[4]resorcinaryl octacinnamate and C-methylcalix[4]resorcinaryl octabenzoate. The target compounds were synthesized in 2 steps. They were a synthesis of C-methylcalix... see more
Ibrahim Dalli,Danni Ramdhani,Aliya Nur Hasanah
Diclofenac sodium is one of analgesic which added to herbal medicines to enhance the effects. One of a qualitative method that is easy, efficient and simple is an indicator strip test. Indicator strip based polystyrene (PS) and polymethylmethacrylate (PMM... see more
Hanifullah Habibie,Rudi Heryanto,Mohamad Rafi,Latifah Kosim Darusman
Herbal medicines become increasingly popular all over the world for preventive and therapeutic purposes. Quality control of herbal medicines is important to make sure their safety and efficacy. Chromatographic fingerprinting has been accepted by the World... see more
Marco Sandjaja,Maria Lucia Ardhani Dwi Lestari
This present study was conducted to investigate the effect of adding hydrophobically modified end-capped (HM) polymers with various polyethylene oxide (PEO) chain lengths on the structure and viscosity of anionic vesicles dispersion. A pronounced increase... see more
Sri Sudiono,Mustika Yuniarti,Dwi Siswanta,Eko Sri Kunarti,Triyono Triyono,Sri Juari Santosa
Humic acid (HA) extracted from peat soil according to the recommended procedure of the International Humic Substances Society (IHSS) has been tested to remove AuCl4- from aqueous solution. The removal was optimum at pH 2.0 and it was mainly dictated by at... see more
Maria Ulfah,Sri Raharjo,Pudji Hastuti,Purnama Darmadji
The objective of this research was to characterize the porosity of decolorized activated carbon (DAC) and its ability to adsorb ß-carotene as a preliminary study to characterize activated carbon as an adsorbent to adsorb carotene from crude palm oil. The ... see more
Kamran Ghasemzadeh,Milad Mohammad Alinejad,Milad Ghahremani,Rahman Zeynali,Amin Pourgholi
This study presents a 2D-axisymmetric computational fluid dynamic (CFD) model to investigate the performance Pd membrane reactor (MR) during propane dehydrogenation process for hydrogen production. The proposed CFD model provided the local information of ... see more
Agus Setiabudi,Asep Wahyudin,Galuh Yuliani,Mauro Mocerino
The importance of observation in science and science education has triggered this laboratory development study that investigated the value of an observation kit as a new approach to teaching rate of reaction in general chemistry class. The kit consists of... see more
Eka Dian Pusfitasari
Indonesia has experiences on the lack of chemical security such as: a number of bombing terrors and hazardous chemicals found in food. Bomb used in terror is a homemade bomb made from chemicals which are widely spread in the research laboratories such as ... see more
Miftakhul Jannatin,Ganden Supriyanto,Pratiwi Pudjiastuti
The development of analytical methods of histamine using Ni (II) and alizarin red S reagents by UV-Vis spectrophotometry has been done. The objective of this research is to determine the ability of Ni(II) and alizarin red S to form color complex compound ... see more
Wening Lestari,Rizna Triana Dewi,Leonardus Broto Sugeng Kardono,Arry Yanuar
Sulochrin is known to have an activity as inhibitors of the a-glucosidase enzyme. In this report interaction of sulochrin to the active site of the a-glucosidase enzyme from Saccharomyces cerevisiae was studied by docking method. The crystal structure of ... see more
Teni Ernawati,Maksum Radji,Muhammad Hanafi,Abdul Mun’im,Arry Yanuar
This paper reviews biological activity of some cinnamic acid derivative compounds which are isolated from natural materials and synthesized from the chemical compounds as an agent of a-glucosidase inhibitors for the antidiabetic drug. Aegeline, anhydroaeg... see more