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Institution

Indonesian Institute of Sciences

FacilityJakarta, Indonesia
About: Indonesian Institute of Sciences is a facility organization based out in Jakarta, Indonesia. It is known for research contribution in the topics: Population & Genus. The organization has 4795 authors who have published 10544 publications receiving 76990 citations. The organization is also known as: Indonesian Institute of Sciences Cibinong, Indonesia.


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Journal ArticleDOI
TL;DR: In this article, a simple and relatively low-temperature method for producing graphitic carbon from renewable and abundant coconut coir is reported, where the formation of graphitic layers is observed in the form of well-defined lattice fringes that are separated by an interplanar distance of 0.3367nm around Ni.

25 citations

Journal ArticleDOI
TL;DR: Fungi are generally considered to have excellent dispersal potentials and marine fungi have the potential to disperse far and wide in an environment that has no obvious barriers to dispersal, but it is shown that fungal communities on either side of Wallace’s line are significantly different from one another.
Abstract: Editor: Vincent Merckx Abstract Aim: To test whether or not fungal communities associated with the widespread seagrass, Syringodium isoetifolium can be differentiated on either side of Wallace’s line, a boundary line separating Asian and Australasian fauna. Additionally, we examine whether host multilocus genotype predicts fungal community composition. Location: A total of 77 samples were collected from 14 sampling sites spanning the Indonesian archipelago. Methods: We sequenced the fungal ITS1 gene using Illumia MiSeq technology and used a clustering-free Divisive Amplicon Denoising Algorithm to infer ribosomal sequence variants. Data were analysed via non-metric multidimensional scaling, Mantel tests and permutational multivariate analysis of variance. Binary and quantitative null models were used to determine whether results significantly deviated from random. Host genotype was determined by genotyping at 18 microsatellite loci and standard genetic analysis was performed in the R package APE. Results: Significant differences in fungal community composition were detected on either side of Wallace’s line (p = <.001 R = .040). A significant distance decay of similarity pattern was observed between ribosomal sequence variants and geographical distance (p = .001 R = .227) and several fungal ribosomal sequence variants were significantly associated with sampling sites found either east or west of Wallace’s line. Main conclusions: Fungi are generally considered to have excellent dispersal potentials and marine fungi have the potential to disperse far and wide in an environment that has no obvious barriers to dispersal. Despite this assumed excellent dispersal potential, we show that fungal communities on either side of Wallace’s line are significantly different from one another. We speculate that limited dispersal and differences in habitat type are responsible for the observed pattern. Work examining biogeographical patterns in marine fungi is still in its infancy and further research is required to fully understand marine fungal biogeography.

25 citations

Journal ArticleDOI
TL;DR: In this article, five new stilbene glucosides, gnemonosides F, G, H, I, and J, were isolated from the stem lianas of Gnetum gnemonoidesBrongn and gnetum africanumWelw along with nine known stilbenoids.
Abstract: Five new stilbene glucosides, gnemonosides F, G, H, I, and J were isolated from the stem lianas of Gnetum gnemonoidesBrongn and Gnetum africanumWelw along with nine known stilbenoids. The structures of the new compounds were elucidated as gnetin E 4a,4b,4c-O-β-triglucopyranoside (2), gnetin E 4a,4c-O-β-diglucopyranoside (3), gnetin C 4a,4b,11a-O-β-triglucopyranoside (4), gnetin D 4a,4b-O-β-diglucopyranoside (5), and gnetuhainin A 4a,4b-O-β-diglucopyranoside (6) on the basis of spectroscopic evidence.

25 citations

Journal ArticleDOI
01 Jan 2016-Geology
TL;DR: In this paper, the authors use multichannel seismic and gravity data to map the top of the downgoing oceanic crust offshore central Sumatra, Indonesia, and identify an isolated 3 km basement high at the northern edge of this zone, close to the 2005 slip termination.
Abstract: Earthquakes in subduction zones rupture the plate boundary fault in discrete segments. One factor that may control this segmentation is topography on the downgoing plate, although it is controversial whether this is by weakening or strengthening of the fault. We use multichannel seismic and gravity data to map the top of the downgoing oceanic crust offshore central Sumatra, Indonesia. Our survey spans a complex segment boundary zone between the southern termination of the M w = 8.7, A.D. 2005 Simeulue-Nias earthquake, and the northern termination of a major 1797 earthquake that was partly filled by an M w = 7.7 event in 1935. We identify an isolated 3 km basement high at the northern edge of this zone, close to the 2005 slip termination. The high probably originated at the Wharton fossil ridge, and is almost aseismic in both local and global data sets, suggesting that while the region around it may be weakened by fracturing and fluids, the basement high locally strengthens the plate boundary, stopping rupture propagation.

25 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202311
2022597
20211,059
20201,426
20191,218
20181,197