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Jurnal Institusi
The implementation of collection development in the Gempita Pustaka School Library
Berkala Ilmu Perpustakaan dan Informasi; Vol 21 No 1 (2025): June; 46-59
Introduction. School libraries serve as educational resources; nevertheless, the collection development process is commonly ignored or executed improperly. The objective of the study is to examine the Gempita Pustaka Library’s collection developmen...
Jurnal Institusi
Comparison of NAA XRF and ICP-OES Methods on Analysis of Heavy Metals in Coals and Combustion Residues
Indonesian Journal of Chemistry; Vol 17, No 2 (2017); 228-237
Heavy metals in the samples of coals and combustion residues (bottom ash and fly ash) from Pacitan coal-fired power plant (CPP) have been identified by using NAA, XRF, and ICP-OES methods. This research was aimed to understand the analysis results co...
Jurnal Institusi
Dampak kualitas ruang pada personal space pengguna di Dinas Perpustakaan dan Kearsipan Provinsi Jawa Timur
Berkala Ilmu Perpustakaan dan Informasi; Vol 18 No 1 (2022): June; 86-97
Introduction. Examining the value of quality space is not simple, as we not only need to see the design, but also need to feel it, particularly personal space in libraries. This article aims to examine the quality of space that may affect the user’...
Jurnal Institusi
Tinjauan literatur sistematis tentang tren penelitian penyebaran hoax selama pandemi COVID-19 di Indonesia
Berkala Ilmu Perpustakaan dan Informasi; Vol 17 No 2 (2021): December; 265-278
Introduction. Awareness about the spread of hoaxes through the media during the COVID-19 pandemic in Indonesia should be the main concern for everybody.
Data Collection Methods. This paper used a systematic literature review method with a qualitativ...
Jurnal Institusi
Examining cyber security implementation through TLS/SSL on academic institutional repository in Indonesia
Berkala Ilmu Perpustakaan dan Informasi; Vol 17 No 2 (2021): December; 238-249
Introduction. This paper examines the cybersecurity of AIR in Indonesia by analyzing the security aspect focusing on the security protocols involving network called TLS (Transport Layer Security) and SSL (Secure Socket Layer), which has functions to ...
Jurnal Institusi
Peran Perpustakaan Kafe Literacy Coffee dalam meningkatkan minat baca pengunjung di Kota Medan
Berkala Ilmu Perpustakaan dan Informasi; Vol 18 No 1 (2022): June; 45-58
Introduction. To increase the interest in reading could be anywhere, not only in libraries. The purpose of this study is to examine the role of Literacy Coffee Cafe Library in increasing reading interest and visitors.
Data Collection Methods. This s...
Jurnal Institusi
Wormhole-Like Mesoporous Carbons from Gelatine as Multistep Infiltration Effect
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 239-242
Wormhole-like mesoporous carbon from gelatine (WMCG) with two different pore diameters have been synthesized by adopting a modified infiltration treatment. The infiltration effect on the morphology was investigated. The results show that the WMCG sam...
Jurnal Institusi
Surface Morphology of Fe(III)-Porphyrin Thin Layers as Characterized by Atomic Force Microscopy
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 233-238
Surface morphology of Fe(III)–porphyrin thin layers was studied using atomic force microscopy. The thin layer samples used in these experiments were deposited by spin coating methods on indium–tin-oxide substrates at room temperature under atmosp...
Jurnal Institusi
Preparation and Characterization of Carbon Foam Derived from Fine Coal and Phenolic Resin
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 243-248
Carbon foam from fine coal and phenolic resin mixture had been prepared by heating in nitrogen atmosphere. The composition of fine coal in a mixture was 30, 35, 40, 45 and 50%. Physical and mechanical characters of carbon foam that were determined fr...
Jurnal Institusi
Synthesis, Characterization and Crystal Structures of Mixed-Ligand Complexes of [Cu(bipy)2N3(ClO4)] and [Cu(5,5’-DiMebipy)2(N3)](ClO4)
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 249-259
Two mixed –ligand complexes [Cu(bipy)2N3(ClO4)] and [Cu(5,5’-DiMebipy)2(N3)](ClO4) have been prepared and characterized. The compounds were characterized by elemental analyses, IR and UV-Visible spectroscopy, room temperature magnetic susceptibil...
Jurnal Institusi
Properties and Toxicity of Cobalt(II) Complex with 2,4,5-triphenyl-1H-imidazole Ligand
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 260-267
Binuclear cobalt(II) complex with 2,4,5-triphenyl-1H-imidazole ligand has been synthesized using reflux method. The yellowish green crystals with needle-like shape were obtained. Determination of molecular formula of the complex was carried out using...
Jurnal Institusi
Adsorption of [AuCl4]– on Ultrasonically and Mechanical-Stirring Assisted Mg/Al-NO3 Hydrotalcite-Magnetite
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 268-276
It has been examined the application of Mg/Al-NO3 hydrotalcite-magnetite synthesized mechanically (MHT) and ultrasonically (UMHT) by co-precipitation method as adsorbents for [AuCl4]– from aqueous solution. Two techniques of synthesis were conducte...
Jurnal Institusi
Radiochemical Separation of 161Tb from Gd/Tb Matrix Using Ln Resin Column
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 283-288
Terbium-161 (161Tb) is a potential radiolanthanide due to its favorable properties for treatment small size of cancer. Preliminary study on radiochemical separation of 161Tb from Gd/Tb matrix using Ln resin column based on extraction chromatography m...
Jurnal Institusi
Sorption Characteristics of 137Cs and 90Sr into Rembang and Sumedang Soils
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 277-282
In order to understand the sorption behavior of 137Cs and 90Sr into soil sample from Rembang and Subang, it is important to estimate the effect of contact time, ionic strength and concentration of metal ion in the solution. For this reason, the inter...
Jurnal Institusi
Cyclic Acetalization of Furfural on Porous Aluminosilicate Acid Catalysts
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 289-296
Porous aluminosilicate materials included microporous and mesoporous ZSM-5, hierarchical aluminosilicates, and mesoporous aluminosilicate were tested for acetalization of furfural (furan-2-carbaldehyde) with propylene glycol. The existing synthesis m...
Jurnal Institusi
Purification and Characterization of Amyloglucosidase Enzyme from the Thermophilic Endomycopsis fibuligera Using Sago Starch as a Substrate
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 302-307
An investigation on purification and characterization of amyloglucosidase enzyme from Endomycopsis fibuligera by fermentation of sago starch has been carried out. This enzyme is inductive and can be produced by fermenting sago starch in a medium cont...
Jurnal Institusi
HPLC Fingerprint Analysis Combined with Chemometrics for Authentication of Kaempferia galanga from Related Species
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 308-314
Fingerprint analysis using high performance liquid chromatography (HPLC) has been developed for authentication of Kaempferia galanga from related species, such as Kaempferia pandurata and K. rotunda. By comparing the fingerprint chromatograms of K. g...
Jurnal Institusi
Antioxidant Activity of Moringa oleifera Extracts
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 297-301
Moringa oleifera have been evaluated for its antioxidant activity. M. oleifera leaves were extracted with methanol, ethyl acetate, dichloromethane and n-hexane. The antioxidant activity of extracts were evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPP...
Jurnal Institusi
Preservation of Natural Colorant Extract of Jalawe Fruit Peel (Terminalia bellirica) in Water-Based Solution
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 315-321
The general objective of this study is to preserve natural colorant extract of jalawe fruit peel in water-based solution during storing. The specific objectives in this research are finding suitable type and amount of antimicrobial compound to preven...
Jurnal Institusi
Comparative Study on the Adsorption of [AuCl4]– onto Salicylic Acid and Gallic Acid Modified Magnetite Particles
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 329-337
Salicylic acid-modified magnetite (Mag-SA) and gallic acid-modified magnetite (Mag-GA) particles were prepared by co-precipitation procedure. Characterization results showed the interaction that occurs between the surface of magnetite with salicylic ...