25 articles in this issue
Wega Trisunaryanti,Triyono Triyono,Nugroho Raka Santoso,Savitri Larasati,Cahyarani Paramesti,Dyah Ayu Fatmawati
The analysis of the effect of cobalt concentration supported on mesoporous silica (MS) has been evaluated. This study was aimed to observe the physical and chemical characteristics of the catalysts, and also to study the catalytic activity and its selecti... see more
Siham Lhimr,Saidati Bouhlassa,Bouchaib Ammary
ZnO is one of the most studied semiconductor materials because of its interesting chemicals, and from a technological point of view, mainly as a consequence of their outstanding properties, such as wurtzite type, non-toxic nature, large band gap, low cost... see more
Nadia Toudert,Farida Zakkad,Noureddine Dadda,Abdelouaheb Djilani,Amadou Dicko,Salah Eddine Djilani
Euphorbia species possess pharmacological properties that have been widely used for medical purposes worldwide. In this paper, three plants belonging to the Euphorbia genus growing in North-East of Algeria were studied. The phenolic contents were identifi... see more
Putri Restu Dewati,Rochmadi Rochmadi,Abdul Rohman,Avido Yuliestyan,Arief Budiman
Astaxanthin is a natural antioxidant, and the highest content of this compound is found in Haematococcus pluvialis microalgae. Microwave-assisted extraction (MAE) is one of the environmentally friendly extraction methods and has many advantages. This stud... see more
Sherly Kasuma Warda Ningsih,Hary Sanjaya,Bahrizal Bahrizal,Edi Nasra,Syuhada Yurnas
Cu2+ doped ZnO by green synthesis was successfully prepared by using a combination of the Sol-Gel-Sonochemical method. Duck egg albumen was used as an additive, a substitute for chemical additives, such as monoethanolamine (MEA) and diethanolamine (DEA). ... see more
Nur Adila Fatin Mohd Khir,Mohd Ridzuan Mohd Abdul Razak,Fariza Juliana Nordin,Nur Rahimah Fitrah Mohd Sofyan,Nur Fadilah Rajab,Rozie Sarip
A series of six sulfur-bridged dinuclear silver(I) thiosemicarbazone complexes were synthesized through the reaction of silver(I) nitrate with 4-phenyl-3-thiosemicarbazone derivatives together with triphenylphosphine (PPh3) (in a 1:1:2 molar ratio). Follo... see more
Tri Windarti,Widjijono Widjijono,Nuryono Nuryono
Hydroxyapatite (HA) has been deposited on silica (SiO2) particles to produce HA-SiO2 composite that will be used as the powder component of calcium phosphate cement. HA was expected to be on the composite surface to maintain its bioactivity. SiO2 was made... see more
Salsabila Amanda Putri,Edi Suharyadi,Moh. Adhib Ulil Absor
Computational research based on the Density Functional Theory (DFT) has been performed to explore the electronic structure of monolayer material Transition Metal Dichalcogenides (TMDCs) Molybdenum Dichalcogenides MoXY (X; Y = S; Se) in the first Brillouin... see more
Rizka Maria Maria,Satrio Satrio,Teuku Yan Waliyana Muda Iskandarsyah,Bombom Rachmat Suganda,Robert Mohammad Delinom,Dyah Marganingrum,Wahyu Purwoko,Dady Sukmayadi,Hendarmawan Hendarmawan
The determination of recharge areas needs to support the groundwater conservation in the southern volcanic Bandung area. This study aims to determine the recharge area based on environmental isotopes and hydrochemical. A sampling of 26 groundwater was car... see more
Eva Afrilinda,Dagus Resmana Djuanda,Shinta Virdhian,Martin Doloksaribu,Moch Iqbal Zaelana Muttahar,Sri Bimo Pratomo
To understand the morphology of the coercivity enhancement by heat treatment, a commercial sintered NdFeB-type permanent magnet is annealed, and the coercivity is measured by Permagraph. It is shown that the coercivity is increased compared to the initial... see more
Gea Fitria,Arum Patriati,Mujamilah Mujamilah,Maria Christina Prihatiningsih,Edy Giri Rachman Putra,Siriwat Soontaranon
Small-angle X-ray scattering (SAXS) experiments were set up to investigate the form and structure of Fe3O4 magnetic nanoparticles (MNPs) using BL1.3:SAXS at the Synchrotron Light Research Institute (SLRI) of Thailand in the range of scattering vector q, 0... see more
Ghusoon Faidhi Hameed,Fawzi Yahya Wadday,Nahla Shakir Salman
The paper reports the study of the complex formation of cobalt (II) with diethylenetriaminepentaacetic acid (DTPA, H5L) based on spectrophotometric (SF) and potentiometric data (pH). Complexes of different compositions were found, and equilibrium constant... see more
Agus Kuncaka,Rizky Ibnufaatih Arvianto,Almas Shafira Ramadhanty Bunga Latifa,Munawir Ramadhan Rambe,Adhitasari Suratman,Sugeng Triono
Conversion of feather and blood from chicken slaughterhouse waste for producing solid and liquid organic fertilizer excluding composting process with a variation of the mass ratio of feather and blood of a chicken has been conducted. The nitrogen, sulfur,... see more
Naowara Al-Arafi,Nadia Salih,Jumat Salimon
In this work, the synthesis of oleyl oleate wax ester using Brønsted acidic ionic liquid catalysts was carried out. Confirmation of oleyl oleate molecular structure has been performed using FTIR, NMR, and ESI-MS spectroscopies. The ability of ionic liquid... see more
Winda Rahmalia,Septiani Septiani,Uray Amira Naselia,Thamrin Usman,Imelda Hotmarisi Silalahi,Zéphirin Mouloungui
Bixin is one of the potential natural sensitizers used in dye-sensitized solar cells (DSSCs). In this study, bixin was complexed with Cu(II) and Zn(II) to increase its stability. The formation of the complexes was indicated by shifting peaks absorption an... see more
Mhamed Hmamou,Fatima Ezzahra Maarouf,Bouchaib Ammary,Abdelkebir Bellaouchou
The adsorption of chromate ions H2-yA (y = 1, 2, and A = CrO42–) on iron(III) hydroxide was conducted as a function of adsorbent mass, solution pH, and hydration time. The surface complexation technique, based on the examination of the chromate distributi... see more
Jodiawan Jodiawan,Devi Natalia Chrisdiyanti,Nur Vi’atin,Monika Nur Utami Prihastyanti,Rosita Dwi Chandra,Heriyanto Heriyanto,Chandra Ayu Siswanti,Lia Hapsari,Tatas Hardo Panintingjati Brotosudarmo
Banana, as the world’s most consumed fruit, is a good source of carbohydrate, potassium, fiber, and other essential nutrients such as pro-vitamin A carotenoids. The carotenoid content and composition in bananas commonly sold in fruit shops in Malang have ... see more
Sukee Sukdee,Puttinan Meepowpan,Narong Nantasaen,Siriporn Jungsuttiwong,Sarinya Hadsadee,Wilart Pompimon
The genus Mitrephora has been investigated and its anti-inflammatory, anti-bacterial and anti-parasitical activities were examined along with its potential as an anti-cancer cell line and inhibitor for platelet aggregation. In this work, air-dried leaves ... see more
Ali Mahmood Ali,Tagreed Hashim Al-Noor,Eid Abdalrazaq,Abdel Aziz Qasem Jbarah
The multi-dentate Schiff base ligand (H2L), where H2L=2,2'-(((1,3,5,6)-1-(3-((l1-oxidaneyl)-l5-methyl)-4-hydroxyphenyl)-7-(4-hydroxy-3-methoxyphenyl)hepta-1,6-diene-3,5-diylidene)bis(azaneylylidene))bis(3-(4-hydroxyphenyl)propanoic acid), has been prepare... see more
Redi Kristian Pingak,Albert Zicko Johannes,Fidelis Nitti,Meksianis Zadrak Ndii
This study aims to apply a semi-classical approach using some analytically solvable potential functions to accurately compute the first ten pure vibrational energies of molecular hydrogen (H2) and its isotopes in their ground electronic states. This study... see more
Saprini Hamdiani,Yeng-Fong Shih
This study aims to develop a green method to load silver nanoparticles (AgNPs) into the diatomite (D) pores to produce AgNPs-D composite material. The AgNPs were synthesized by pineapple leaf extract at the temperature of 70 °C for 30 min. The composite f... see more
Antonio Kautsar,Wulan Tri Wahyuni,Utami Dyah Syafitri,Syifa Muflihah,Nursifa Mawadah,Eti Rohaeti,Zulhan Arif,Bambang Prajogo,Muhammad Bachri Amran,Abdul Rohman,Mohamad Rafi
Andrographis paniculata is one of the medicinal plants used for the treatment of antidiabetic. Cultivation ages and solvent extraction affected metabolites' composition and concentration that directly cause the plant's efficacies. This research aimed to d... see more
Syifa Avicenna,Iis Nurhasanah,Ali Khumaeni
The silver nanoparticles (AgNPs) have been applied as an antibacterial agent in consumer products, cosmetics, and food industries. In this present work, AgNPs were synthesized in various mediums of polyvinylpyrrolidone (PVP), polyethylene glycol (PEG), an... see more
Noorshida Mohd Ali,Anthony J. H. M. Meijer,Michael D. Ward,Norlinda Daud,Norhayati Hashim,Illyas Md Isa
Luminescent cyanometallate [Ir(ppy)2(CN)2]– (ppy = C6H5C5H4N) has recently gained attention due to its desired photophysical properties. Our research group reported that the [Ir(ppy)2(CN)2]– has shown a negative solvatochromism like [Ru(bipy)(CN)4]2–, res... see more
Bangun Satrio Nugroho,Muh Nur Khoiru Wihadi,Fabian Grote,Siegfried Eigler,Satoru Nakashima
This paper discusses the promising candidate of excellent materials, graphene oxide (GO) and polyoxometalates (POMs), for radionuclide adsorbent. In this perspective, the unique properties of GO and POMs make them ideal candidates for developing new compo... see more