Establishment of the Indonesian Association of Scientific Journal Editors

Komang G. Wiryawan 한국과학학술지편집인협의회 2019 Science Editing Vol.6 No.2

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The current status of science journals in Indonesia

Komang G. Wiryawan 한국과학학술지편집인협의회 2014 Science Editing Vol.1 No.2

Indonesia is the fourth most highly populated country in the world. Every year, there are more than 1.5-million students enrolled into universities across Indonesia. This large number of students is a potential source of scientific publication, as all students are required to publish a paper before they take their final examination. To accommodate this publication demand, good-quality journals need to be established in Indonesia. Therefore, this paper will describe the current status of scientific journals in Indonesia and some other information related to Indonesian scientific journals. The data presented in this article were obtained from the websites of government institutions such as Indonesian Institute of Sciences, Ministry of Education and Culture, and Indonesian Scientific Journal Database. Currently, there are 5,900 scientific journals in Indonesia that are grouped into three classes, namely non-accredited journals (5,579 titles), accredited journals (342 titles), and international journals (16 titles). Most journals are published by universities, faculties, or departments. Other journals are published by research centers and scientific associations. In recent years, the number of journals indexed in Scopus has increased substantially, from only 2 journals before the year 2000 to 16 journals in 2013. In addition, the number of journals registered in the DOAJ (Directory of Open Access Journals) increased sharply from 3 titles in 2009 to 109 titles at the end of 2013. In the year 2012, the number of papers published in the abovementioned journals was 145,000, but only 1,314 papers were published internationally. This number is still very low, even when compared to some Southeast Asian countries. To improve the quality of journals and to increase the number of papers published, a high commitment from the government is required, particularly in terms of regulation formulation and funding provision.

Evaluation of Megasphaera elsdenii supplementation on rumen fermentation, production performance, carcass traits and health of ruminants: a meta-analysis

Susanto Irwan,Wiryawan Komang Gede,Suharti Sri,Retnani Yuli,Zahera Rika,Jayanegara Anuraga 아세아·태평양축산학회 2023 Animal Bioscience Vol.36 No.6

Objective: This study was conducted to evaluate the use of Megasphaera elsdenii (M. elsdenii) as a probiotic on rumen fermentation, production performance, carcass traits and health of ruminants by integrating data from various related studies using meta-analysis. Methods: A total of 32 studies (consisted of 136 data points) were obtained and integrated into a database. The parameters integrated were fermentation products, rumen microbes, production performance, carcass quality, animal health, blood and urine metabolites. Statistical analysis of the compiled database used a mixed model methodology. Different studies were considered random effects, while M. elsdenii supplementation doses were considered fixed effects. p-values and the Akaike information criterion were employed as model statistics. The model was deemed significant at p<0.05 or had a tendency to be significant when p-value between 0.05<p<0.10. Results: Supplementation with M. elsdenii increased (p<0.05) some proportion of fermented rumen products such as propionate, butyrate, isobutyrate, and valerate, and significantly reduced (p<0.05) lactic acid concentration, acetate proportion, total bacterial population and methane emission. Furthermore, the probiotic supplementation enhanced (p<0.05) livestock production performance, especially in the average daily gain and body condition score. Regarding the carcass quality, hot carcass weight and carcass gain were elevated (p< 0.05) due to the M. elsdenii supplementation. Animal health also showed improvement as indicated by the lower (p<0.05) diarrhoea and bloat incidences as well as the liver abscess. However, M. elsdenii supplementation had negligible effects on blood and urine metabolites of ruminants. Conclusion: Supplementation of M. elsdenii is capable of decreasing ruminal lactic acid concentration, enhancing rumen health, elevating some favourable rumen fermentation products, and in turn, increasing production performance of ruminants.

Black soldier fly as feed ingredient for ruminants

Astuti Dewi Apri,Wiryawan Komang Gede 아세아·태평양축산학회 2022 Animal Bioscience Vol.35 No.2

This paper is a review of some experiments using black soldier fly (BSF) and its by-product to explore their nutritional value, production potential in Indonesia and its application in the ration of ruminants. Evaluation on the effect of milk replacer, creep feed containing BSF, BSF frass and the possibility to use lactic acid bacteria from BSF as probiotics are presented. Utilization of BSF larvae in milk replacer as skim and cream milk substitute showed that there were similarity on physiological, hematological status and performance of goat kids compared to those offered goat milk or commercial milk replacer. In addition, BSF larvae can be used to substitute soybean meal in the creep feed for post weaning goat kids without any differences in weight gain and blood profiles. However, utilization of BSF frass in the fattening goat ration resulted lower digestibility of dry matter and organic matter due to the chitin content in the frass. Black soldier fly larvae grown on chicken manure harbour lactic acid bacteria (LAB) which have potential as probiotics for ruminants. In general, BSF larvae has potential as ingredient for milk replacer, creep feed, fattening ration, and source of LAB for probiotics.

Identification of a New Biflavonoid from Selaginella doederleinii Hieron

한아름,이나연,남주원,Adam Wiryawan,서은경 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.10

Short-Term Clinical Evaluation of Enhanced Unilateral Open-Door Laminoplasty Using Titanium Mesh

Adiguno Suryo Wicaksono,Wiryawan Manusubroto 대한척추외과학회 2018 Asian Spine Journal Vol.12 No.5

Study Design: Observational, cross-sectional study. Purpose: The purpose of this study was to evaluate the clinical efficacy and safety profile of open-door laminoplasty (ODL) using titanium mesh. Overview of Literature: The most appropriate surgical management of degenerative spine disorders, particularly ossification of the posterior longitudinal ligament, remains controversial and continues unabated in the neurosurgical community. However, recently, ODL has become popular among surgeons. Many modifications have been developed since Hirabayashi in 1983 to enhance the clinical efficacy and safety of this procedure. Methods: We reviewed the obtained data of patients with ossification of the posterior longitudinal ligament (OPLL) who underwent ODL using titanium mesh at Neurosurgery Subdivision, the Dr. Sardjito Hospital, Yogyakarta, Indonesia, during January 2013–December 2015. Motor improvement (Nurick score), axial neck pain (neck disability index [NDI]), and incidence of complications were pre- and postoperatively examined, and the clinical efficacy and safety of the procedure was evaluated. Data were analyzed using Wilcoxon signed-rank test and paired t -test. Results: This study included five patients were included (i.e., four males and one female) with mean age of 47.00±9.68 years, where reassessments were done after mean follow up of 20.2±4.74 months. Mean duration of surgery was 165±12.55 minutes. Pre- and postoperative motor assessments were 3.4±1.52 and 2.0±1.22 (p =0.059), respectively. Axial neck pains using NDI were 23.60±7.44 and 12.40±6.50 (p =0.004) before and after operations, respectively. No infected postoperative scar was found, and only one patient had a left C5 motor palsy. Conclusions: The results of the present study suggest that enhanced ODL using titanium mesh has favorable outcome and safety profile, which can pave the way for a suitable treatment in patients with OPLL.

Fermentation Characteristics and Microbial Diversity of Tropical Grass-legumes Silages

Ridwan, Roni,Rusmana, Iman,Widyastuti, Yantyati,Wiryawan, Komang G.,Prasetya, Bambang,Sakamoto, Mitsuo,Ohkuma, Moriya Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.4

Calliandra calothyrsus preserved in silage is an alternative method for improving the crude protein content of feeds for sustainable ruminant production. The aim of this research was to evaluate the quality of silage which contained different levels of C. calothyrsus by examining the fermentation characteristics and microbial diversity. Silage was made in a completely randomized design consisting of five treatments with three replications i.e.: R0, Pennisetum purpureum 100%; R1, P. purpureum 75%+C. calothyrsus 25%;, R2, P. purpureum 50%+C. calothyrsus 50%; R3, P. purpureum 25%+C. calothyrsus 75%; and R4, C. calothyrsus 100%. All silages were prepared using plastic jar silos (600 g) and incubated at room temperature for 30 days. Silages were analyzed for fermentation characteristics and microbial diversity. Increased levels of C. calothyrsus in silage had a significant effect (p<0.01) on the fermentation characteristics. The microbial diversity index decreased and activity was inhibited with increasing levels of C. calothyrsus. The microbial community indicated that there was a population of Lactobacillus plantarum, L. casei, L. brevis, Lactococcus lactis, Chryseobacterium sp., and uncultured bacteria. The result confirmed that silage with a combination of grass and C. calothyrsus had good fermentation characteristics and microbial communities were dominated by L. plantarum.

Identification of a New Naphthalene and Its Derivatives from the Bulb of <i>Eleutherine americana</i> with Inhibitory Activity on Lipopolysaccharide-Induced Nitric Oxide Production

Han, Ah-Reum,Min, Hye-Young,Nam, Joo-Won,Lee, Na-Youn,Wiryawan, Adam,Suprapto, Wahyu,Lee, Sang Kook,Lee, Kang Ro,Seo, Eun-Kyoung The Pharmaceutical Society of Japan 2008 Chemical & pharmaceutical bulletin Vol.56 No.9

<P>A new naphthoquinone, (−)-3-[2-(acetyloxy)propyl]-2-hydroxy-8-methoxy-1,4-naphthoquinone (1) was isolated from the bulb of <I>Eleutherine americana</I> M<SMALL>ERR</SMALL>. <I>et</I> H<SMALL>EYNE</SMALL> (Iridaceae) together with two known compounds, eleutherinol (6) and 1,5-dihydroxy-3-methylanthraquinone (7) which were found in this species for the first time. The other known compounds, (−)-isoeleutherin (2), (+)-eleutherin (3), (−)-hongconin (4), and (+)-dihydroeleutherinol (5) which were reported previously from this species, were also isolated in the present study. Compounds 2—6 exhibited potent inhibitory activity on nitric oxide production in RAW 264.7 lipopolysaccharide-activated mouse macrophage cells with IC<SUB>50</SUB> values of 7.7, 11.4, 19.8, 21.7, and 34.4 μ<SMALL>M</SMALL>, respectively, whereas the other two compounds, 1 and 7, were inactive. The structure of compound 1 was elucidated by spectroscopic data analysis including 1D and 2D NMR experiments.</P>

Comparison of reducing sugar content, sensory traits, and fatty acids and volatile compound profiles of the longissimus thoracis among Korean cattle, Holsteins, and Angus steers

Min Yu Piao,이현중,용해인,백석현,김현진,조철훈,Komang Gede Wiryawan,백명기 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.1

Objective: This study was performed to compare fat content, reducing sugar contents, sensory traits, and fatty acid (FA) and volatile compound profiles in longissimus thoracis (LT) among Korean cattle (KC), Holstein (HO), and Angus (AN) steers. Methods: Twelve LT samples (about 500 g each) of KC with an average age of 31±0.42 months, an average carcass weight of 431±12.5 kg, and a quality grade (QG) of 1+ were obtained from the joint livestock products market. Twelve LT samples of HO cattle with an average age of 24±0.54 months, an average carcass weight of 402±7.81 kg, and a QG of 2 were also obtained from the same market. Twelve LT samples of AN steers with an average age of about 20 months and a QG of choice were purchased from a beef delivery company. After slaughter, samples were kept at 4°C for 42 days and prepared for immediate analysis or stored at appropriate conditions. The chemical composition, color, pH, shear force, collagen content, reducing sugars, sensory evaluation, FA composition, and volatile compound content for each LT sample were analyzed. Results: The LT of KC had the highest (p<0.05) fat content, the highest reducing sugar content, and the highest scores in the sensory evaluation (flavor, tenderness, juiciness, and overall acceptance). All the sensory traits were positively correlated (p<0.001) with intramuscular fat and reducing sugar content. Several FAs and volatile compound profiles varied among the breeds. KC LT had the highest (p<0.05) concentrations of acetaldehyde, 3-methyl butanal, and 3-hydroxy-2-butanone, and these volatile compounds were positively correlated (p<0.05) with all the sensory traits. Conclusion: Variations in fat content and reducing sugar contents and FA and volatile compound profiles may contribute to differences in the sensory quality of LT among breeds.

Why and how do we keep editing local medical journals in an era of information overload?

Viera Wardhani,Sam Mathew,Jeong-Wook Seo,Komang G. Wiryawan,Vivi Setiawaty,Burmaajav Badrakh 한국과학학술지편집인협의회 2018 Science Editing Vol.5 No.2