25 articles in this issue
Samin Samin,Suyanti Suyanti,Susanna Tuning Sunanti,Wisnu Ari Adi
Synthesis and certification of lanthanum oxide extracted from monazite sand have been carried out. This research aimed to increase the added value of monazite sand and obtain the lanthanum oxide in-house certified reference material (CRM). Synthesis of la... see more
Rudy Syah Putra,Aprilia Dwi Annisa,Sigit Budiarjo
Wan Zairani Wan Bakar,Ismail Mohd Saaid,Mohd Riduan Ahmad,Husna Hayati Jarni,Siti Qurratu’ Aini Mahat
Core cleaning could be complicated for samples that contain a high amount of clays. Some clays are delicate and exposure to solvent and heat would damage or alter its properties. In this study, we investigated the effect of direct exposure of solvent and ... see more
Siti Fatma Abd Karim,Nur Aliah Adilla Mohammad Asri,Rabiatul Adawiyah Abdol Aziz,Ummi Kalthum Ibrahim
Polylactic acid (PLA) is a biodegradable polymer that had been used as a substitute for conventional petroleum based plastics. Plasticizers were added into the solution of PLA and starch (PLA/S) to increase the flexibility and degradability of the produce... see more
Nizar Happyana,Oliver Kayser
Trichomes of Cannabis sativa are the main tissue for synthesizing and storing cannabinoids, the most interesting compounds in this plant. In this report, metabolic changes in the trichomes of C. sativa var. bedrobinol were investigated by 1H-NMR-based met... see more
Zulfahmi Lukman,Nornizar Anuar,Noor Fitrah Abu Bakar,Norazah Abdul Rahman
Granulation of racemic ibuprofen (±IBP) and a-lactose monohydrate (ALM) at a slightly lower (±IBP) melting point is an efficient method of binding the active pharmaceutical ingredients (API) and excipient in a binderless condition. However, the co-crystal... see more
Lia Destiarti,Risya Sasri
The use of TiO2 in the slurry system for the photocatalytic process has disadvantages. It causes the resistance of UV transmission because it is cloudy and the difficulty for obtaining the catalyst at the end of the process. Therefore, an attempt to overc... see more
Seyed Hassan Mortazavi,Mohammad Reza Bozorgmehr,Mohammad Momen Heravi
Understanding the mechanism of antimicrobial activity of cyclo-peptides helps to design new drugs based on these compounds. A common aspect of the mechanisms provided for the creation of antimicrobial activity of cyclo-peptides is their interaction with c... see more
Soraya Ulfa Muzayanha,Cornelius Satria Yudha,Luthfi Mufidatul Hasanah,Linggar Tungga Gupita,Hendri Widiyandari,Agus Purwanto
The kinetics study of NCA leaching in the HCl system was proposed. Various kinetic models such as shrinking core, logarithmic rate law, and Avrami equation were used to find out the most appropriate kinetic models for this process. The effect of HCl conce... see more
Miratul Khasanah,Alfa Akustia Widati,Usreg Sri Handajani,Muji Harsini,Bahrotul Ilmiah,Irene Dinda Oktavia
Imprinted zeolite modified carbon paste (carbon paste-IZ) electrode had been developed as a sensor to analyze blood glucose content by potentiometry. The used zeolite was Lynde Type A (LTA) that synthesized with a mole ratio of Na2O, Al2O3, SiO2 and H2O o... see more
Shatha Mohammed Hassan Obaid,Jasim Shihab Sultan,Abbas Ali Salih Al-Hamdani
The reaction of methyldopa with o-vanillin in refluxing ethanol afforded Schiff base and characterized through physical analysis with a number of spectra also the study of biological activity. The geometry of the Schiff base was identified through using (... see more
Muhammad Cholid Djunaidi,Pardoyo Pardoyo,Didik Setiyo Widodo,Retno Ariadi Lusiana,Anggun Yuliani
In this research, Polyeugenoxy Acetyl Tiophen Methanolate (PEATM)-Au ionic imprinted membrane (IIM) was synthesized. IIM is a PEATM based membrane that has Au(III) ion molds. The PEATM synthesis was analyzed using FTIR spectroscopy, and its relative molec... see more
Yaung Kwee,Alfinda Novi Kristanti,Nanik Siti Aminah,Mochamad Zakki Fahmi
Carbon nanodots (CNDs) have widely received great attention as a result of favorable optical, electrical, optoelectrical, biocompatible, and non-toxic properties these nanoparticles possess. However, the exploration of nanoparticle from natural raw materi... see more
Satrio Satrio,Rasi Prasetio,Boy Yoseph Cahya Sunan Sakti Syah Alam,Teuku Yan Waliyana Muda Iskandarsyah,Faizal Muhammadsyah,Mohamad Sapari Dwi Hadian,Hendarmawan Hendarmawan
The presence of several hot springs in Sembalun – Rinjani, East Lombok, West Nusa Tenggara is an indicator of geothermal potential in the area. This study aims to determine the characteristics of hot springs and cold springs and also the geothermal potent... see more
Evarista Ristin Pujiindiyati,Paston Sidauruk,Tantowi Eko Prayogi,Faizal Abdillah
The chemical characteristics of the Ciliwung River were analyzed to understand hydrochemical evolution. A fraction of sea water mixture and kinds of mineral controlling for chemicals were also determined. During three year investigations in 2015, 2016, an... see more
Azizia Alifi,Rian Kurniawan,Akhmad Syoufian
The preparation and characterization of zirconia-supported titania with a zinc dopant had been studied. Zinc-doped titania was grown on the surface of zirconia by the sol-gel method. Various zinc contents and calcination temperatures were applied to inves... see more
Tengku Amran Tengku Mohd,Shareena Fairuz Abdul Manaf,Munawirah Abd Naim,Muhammad Shafiq Mat Shayuti,Mohd Zaidi Jaafar
Polymer flooding could enhance the oil recovery by increasing the viscosity of water, thus, improving the mobility control and sweep efficiency. It is essential to explore natural sources of polymer, which is biologically degradable and negligible to envi... see more
Leny Yuliati,Mohd Hayrie Mohd Hatta,Siew Ling Lee,Hendrik Oktendy Lintang
In this work, the crystalline carbon nitride photocatalysts were synthesized by an ionothermal technique with varied synthesis temperature of 500, 550, and 600 °C, and synthesis time of 2, 4, and 6 h. Fourier transform infrared spectra showed the successf... see more
Zahid Raza
The main object of this study is to determine the exact values of the topological indices which play a vital role in studying chemical information, structure properties like QSAR and QSPR. The first Zagreb index and second Zagreb index are among the most ... see more
Adhitasari Suratman,Dwi Ratih Purwaningsih,Eko Sri Kunarti,Agus Kuncaka
A new encapsulation of NPK fertilizer hydrogel granules made from glutaraldehyde crosslinked chitosan has been successfully fabricated. This designed fertilizer was aimed to maximize the fertilizing process in the soil, as the environmental pollution affe... see more
Kristian Handoyo Sugiyarto,Isti Yunita,Harold Andrew Goodwin
Salt of [Cu(bptrzH)Cl2], (bptrzH = 3,5-bis(pyridin-2-yl)-H-1,2,4-triazole) has been prepared and characterized its electronic spectral and magnetic properties. This salt is paramagnetic with magnetic moment, µs, being 1.77–1.78 BM at 293 K, but decreased ... see more
Muhammad Arba,Andry Nur-Hidayat,Ida Usman,Arry Yanuar,Setyanto Tri Wahyudi,Gilbert Fleischer,Dylan James Brunt,Chun Wu
The novel coronavirus disease 19 (Covid-19) which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been a pandemic across the world, which necessitate the need for the antiviral drug discovery. One of the potential protein tar... see more
Uyi Sulaeman,Suhendar Suhendar,Hartiwi Diastuti,Roy Andreas,Shu Yin
The defect and metallic silver (Ag) in silver phosphate (Ag3PO4) photocatalyst were successfully generated using hydroxyapatite (HA) and glucose. Two steps of synthesis were done in these experiments. Firstly, the Ag/HA powder was prepared by reacting AgN... see more
Hersa Milawati,Winda Sukmawati,Desi Harneti,Rani Maharani,Nurlelasari Nurlelasari,Ace Tatang Hidayat,Darwati Darwati,Unang Supratman,Yoshihito Shiono
Three aromadendrane-type sesquiterpenoids, spathulenol (1), 4ß,10a-dihydroxyaromadendrane (2), and 4a,10a-dihydroxyaromadendrane (3) were isolated from the stem bark of Aglaia harmsiana (Meliaceae). Compound 3 was isolated for the first time from Aglaia g... see more
Radite Yogaswara,Maria Ludya Pulung,Sri Hartati Yuliani,Enade Perdana Istyastono
Mutations in Plasmodium falciparum dihydrofolate reductase (PfDHFR), together with other mutations, hinder malaria elimination in Southeast Asia due to multiple drug resistance. In this article, molecular docking-guided three-dimensional (3D) quantitative... see more