30 articles in this issue
Siti Hasnah Kamarudin,Emiliana Rose Jusoh,Luqman Chuah Abdullah,Mohd Halim Shah Ismail,Min Min Aung,Chantara Thevy Ratnam
This research aims to investigate the effect of crude palm oil (CPO) as a plasticizer in polypropylene blown film on thermal and dynamic mechanical properties. Polypropylene (PP) was blended with 1, 3, and 5% of CPO using a twin screw extruder. The extrud... see more
Muhamad Basit Febrian,Duyeh Setiawan,Hilda Hidayati
High specific activity is a necessity in the fabrication of 99Mo/99mTc radioisotope generators. Recoil reaction, or the Szilard-Chalmers effect, is a method that could be used as an alternative method for increasing specific activity in radioisotope produ... see more
Dilin Rahayu Nataningtyas,Tri Joko Raharjo,Endang Astuti
Bacterial lipases have significant potential to be used as the biocatalyst for many chemical reactions. In this study, a novel gene encoding lipase was isolated from an Alcaligenes sp. JG3. A pair of designed primer has successfully isolated 1 kb (LipJG3)... see more
Andaru Dena Prasiwi,Wega Trisunaryanti,Triyono Triyono,Iip Izul Falah,Darma Santi,Muhammad Fajar Marsuki
Synthesis of mesoporous carbon from Merbau wood (Intsia spp.) waste by microwave method as nickel catalyst support for a-cellulose hydrocracking had been carried out. The Merbau wood sawdust was carbonized at 800 °C to produce C800 and the C800 was treate... see more
Jasril Jasril,Hilwan Yuda Teruna,Aisyah Aisyah,Nurlaili Nurlaili,Rudi Hendra
Four pyrazoline analogues, 3-(4-methoxyphenyl)-5-naphthalene-1-yl-1-phenyl-4,5-dihydro-pyrazole (3), 3-(4-methoxyphenyl)-5-naphthalene-1-yl-4,5-dihydro-1H-pyrazole (4), 3-(2-methoxyphenyl)-5-naphthalene-1-yl-1-phenyl-4,5-dihydro-pyrazole (5) and 3-(2-meth... see more
Nor Saadah Mohd Alias,Harumi Veny,Fazlena Hamzah,Noorhaliza Aziz
Transesterification of waste cooking oil (WCO) for fatty acid methyl ester synthesis using calcium oxide (CaO) as a catalyst with absence and presence of free fatty acid (FFA) pretreatment (untreated and pretreated) prior to reaction have been investigate... see more
Tegar Wijaya,Rukman Hertadi
The ability of surfactant-like peptides to emulsify oil has become the main focus of our current study. We predicted the ability of a series of surfactant-like peptides (G6D, A6D, M6D, F6D, L6D, V6D, and I6D) to emulsify decane molecules using coarse-grai... see more
Ali Khumaeni,Asep Yoyo Wardaya,Heri Sugito,Nasrullah Idris,Kiichiro Kagawa
Analysis of impurity in powder samples has been made by using metal-assisted laser-induced plasma spectroscopy utilizing a pulsed CO2 laser. Various powders including food powder, supplement powder, baby powder, and medicine powder were employed as sample... see more
Askal Maimulyanti,Budiawan Budiawan,Asep Saefumillah,Heny Suseno
The diffusive gradient in thin film (DGT) is an analytical technique to determine phosphate in the environment. This technique uses a thin film diffusive hydrogel in contact with a binding phase (ferrihydrite) to binding of phosphate. The released phospha... see more
Madiha Batool,Muhammad Zahid Qureshi,Farwa Hashmi,Nida Mehboob,Abdul Salam Shah
Nanotechnology is generating interest of researchers toward cost-free and environment-friendly biosynthesis of nanoparticles. In this research, biosynthesis of stable copper nanoparticles has been done by using aloe vera leaves extract which has been prep... see more
Ahmed Fadhil Khudhair,Mouyed Khudhair Hassan,Hasan F. Alesary,Ahmed S. Abbas
The cloud point technique was effectively utilized for extraction and pre-concentration of nickel(II) in urine samples before measurement by UV-Vis spectrophotometer and AAS techniques. The metal response to a para-aminophenol (PAP) reagent in a non-ionic... see more
Triyanda Gunawan,Retno Puji Rahayu,Rika Wijiyanti,Wan Norharyati Wan Salleh,Nurul Widiastuti
Mixed Matrix Membranes (MMMs) which consist of 0.3 wt.% Zeolite-Carbon Composite (ZCC) dispersed in BTDA-TDI/MDI (P84 co-polyimide) have been prepared through phase inversion method by using N-methyl-2-pyrrolidone (NMP) as a solvent. Membranes were charac... see more
Yudi Wicaksono,Dwi Setyawan,Siswandono Siswandono,Tri Agus Siswoyo
Preparation and characterization of a novel cocrystal of atorvastatin calcium with succinic acid coformer were successfully performed. This research aims to modify the crystalline form of atorvastatin calcium through cocrystallization with succinic acid c... see more
Eti Rohaeti,Khoirotul Muzayanah,Dewi Anggraeni Septaningsih,Mohamad Rafi
Chili is widely used in many food products, especially in Indonesia food. Sometimes a synthetic dye, i.e., rhodamine B or red textile dye were found in commercial chili powder. A fast, precise and accurate analytical method is necessary to authenticate ch... see more
Salih Hadi Kadhim,Tariq Hussein Mgheer,Hussein Idrees Ismael,Khudheyer Jawad Kadem,Ahmed Saadon Abbas,Abbas Jasim Atiyah,Iman Jassim Mohamad
The ternary NiO-CoO-MgO catalyst in three ratios 20:20:60, 25:25:50, and 30:30:40 for these component oxides respectively, were synthesized by co-precipitation method of their carbonates by addition of a precipitate agent in basic media, and then calcinat... see more
Mohammad Salim Tabish,Nor Suhaila Mohamad Hanapi,Wan Nazihah Wan Ibrahim,Nor’ashikin Saim,Noorfatimah Yahaya
In this work, a bio-composite sorbent, alginate incorporated graphene oxide (Alg/GO) is prepared for the micro solid phase extraction of non-steroidal anti-inflammatory drugs (NSAIDs) from water samples. The sorbent was prepared in a suspended solution fo... see more
Keisuke Abe,Ade Kurniawan,Masafumi Sanada,Takahiro Nomura,Tomohiro Akiyama
Combustion synthesis (CS) is a simple and very fast method to synthesize a target material. New ironmaking method via the CS using carbon-infiltrated iron ore was proposed, and the possible conditions for the method were investigated. Adiabatic flame temp... see more
Siti Jamilatun,Budhijanto Budhijanto,Rochmadi Rochmadi,Avido Yuliestyan,Arief Budiman
With a motto of preserving nature, the use of renewable resources for the fulfillment of human needs has been seen echoing these days. In response, microalgae, a water-living microorganism, is perceived as an interesting alternative due to its easy-to-cul... see more
Endah Retnaningrum,Wahyu Wilopo
The manganese bioleaching process of pyrolusite from Kliripan, Indonesia using Acidithiobacillus sp KL3 was investigated. The influence pulp densities of pyrolusite (0.01, 0.02, 0.03 and 0.05 g/cm3) on the bioleaching processes were studied for 16 days. T... see more
Habiddin Habiddin,Elizabeth Mary Page
The present study outlines the development and validation of a four-tier diagnostic instrument to explore first year undergraduate students’ understanding of chemical kinetics (FTDICK). The four-tier instrument is a recent format and has been applied only... see more
Sharifah Fathiyah Sy Mohamad,Farhan Mohd Said,Mimi Sakinah Abdul Munaim,Shahril Mohamad
This study demonstrates the extraction of jacalin from crude extract of jackfruit seeds using anionic surfactant based reverse micellar system, sodium bis(2-ethylhexyl) sulfosuccinate (AOT) in isooctane. Effects of various parameters, such as, NaCl concen... see more
Nor Insyirah Hairul Salleh,Arman Abdullah
Palm oil (Elaeis guineensis) leaves extract was investigated on its potential to inhibit carbon steel corrosion via weight loss and potentiodynamic polarisation methods. Corrosion inhibition of carbon steel using palm oil leaves extract was determined at ... see more
Ruwaida Abdul Rasid,Thye Mei Chin,Mazni Ismail,Nahsya Nur Udzaifah Abdul Rahman
Municipal solid waste (MSW) in Malaysia mainly consists of food waste. As food waste is of organic compounds, its improper management may cause serious environmental issues, as it may produce greenhouse gases and polluting leachate. Alternative management... see more
Katarina Rachma Andita,Rian Kurniawan,Akhmad Syoufian
Synthesis and characterization of Cu-doped zirconium titanateas a potential visible-light responsive photocatalyst had been conducted. Titanium tetraisopropoxide (TTIP) was used as a precursor of Ti source, reacted to ZrO2 powderand CuSO4·5H2O with variou... see more
Nur Hanani Rushan,Nur Hidayah Mat Yasin,Noor Raihana Abu Sepian,Farhan Mohd Said,Nurafifah Izzati Shafei
The aim of this research is to study the immobilization effect on growth cell of microalgae Chlorella vulgaris. The comparison of lipid production between immobilized microalgae and free cell culture was also studied and the fatty acid methyl ester for bi... see more
Imam Siswanto,Harno Dwi Pranowo,Mudasir Mudasir
Resistance to the traditional antifolates is now widespread in Plasmodium falciparum and Plasmodium vivax. To find the interaction model of some compounds derived from 1,6-dihydro-1,3,5-triazine-2,4-diamine, molecular docking technique was carried out usi... see more
Dhony Hermanto,Bambang Kuswandi,Dwi Siswanta,Mudasir Mudasir
An amperometric biosensor for the indirect determination of Hg(II) has been developed based on inhibition of urease (EC 3.5.1.5) immobilized into alginate–chitosan polyelectrolyte complexes membrane. The biosensor response was monitored by following the r... see more
Noormazlinah Noormazlinah,Norlaili Hashim,Abdurahman Hamid Nour,Mimi Sakinah Abdul Munaim,Maria Pilar Almajano,Nurul Bahirah
The traditional ways in the extraction of bioactive compounds using conventional methods are disadvantageous from both economic and environmental perspectives. In this, the potential of microwave-assisted hydrodistillation conditions for extraction of phy... see more
Abdurahman Hamid Nour,Yasmeen Hafiz Zaki,Hybat Salih Mohamed,Hesham Hussein Rassem
Excess levels of organic and inorganic matters in the discharge from sugarcane mill effluent (SCME) wastewater, causes the earnest environmental issue. In this study, a single unit integrated ultrasonic membrane anaerobic system (IUMAS) has been investiga... see more
Nissha Bharrathi Romes,Mariani Abdul Hamid,Siti Ernieyanti Hashim,Roswanira Abdul Wahab
The present study highlighted the statistical modeling of an ultrasonic-aided extraction (UAE) of Elaeis guineensis leaves extract for maximal extraction yield (EY) and total phenolic content (TPC). A Box-Behnken design investigated the effects of ethanol... see more