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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.
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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.
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Fermentation Characteristics and Microbial Diversity of Tropical Grass-legumes Silages
Roni Ridwan,Iman Rusmana,Yantyati Widyastuti,Komang G. Wiryawan,Bambang Prasetya,Mitsuo Sakamoto,Moriya Ohkuma 아세아·태평양축산학회 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.
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