Indonesian Institute of Sciences

About: Indonesian Institute of Sciences is a facility organization based out in Jakarta, Indonesia. It is known for research contribution in the topics: Population & Biology. 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.

Role of arbuscular mycorrhizal fungi and Pongamia pinnata for revegetation of tropical open-pit coal mining soils

Abstract: Open-pit coal mining activities may cause forest and environmental degradation. Thus, forests need to be reclaimed and revegetated after coal mining. This study aimed to determine the combined effects of arbuscular mycorrhizal fungi (AMF) inoculation on the revegetation of postcoal-mining lands with Pongamia pinnata. This completely randomized study was conducted for 6 months in a greenhouse. The first factor consisted of four different levels based on soil medium type: forest soil, mined-out soil, overburdened soil, and landfill soil. The second factor consisted of three levels based on three different dosages of AMF: control, 2 g of AMF, and 4 g of AMF. Open-pit coal mining activities in East Kalimantan caused serious land degradation in tropical ecosystem. Revegetation with P. pinnata accelerated land reclamation by passing the land preparation stage and decreased the costs of land preparation. Forest soil was the optimal medium for the growth of P. pinnata seedlings. However, when the seedlings were planted in degraded soil of mining, their average height, diameter, and total biomass decreased drastically. The inoculation of 2 g AMF colonized the root and therefore improved growth of seedling. This result may reduce cost of chemical fertilizer. AMF inoculation improved Fe absorption by 11.7% that was higher than that under control, whereas 90.4% of the assimilated Fe was retained in plant roots. Revegetation by exotic fast-growing pioneer legume species of P. pinnata and application of AMF drastically improved some chemical soil properties that suitable for rehabilitation program in tropical post-mining areas.

Analisis bibliometrik perkembangan penelitian bidang ilmu instrumentasi

Abstract: A study of trend analysis of the field of instrumentation research during the period 2006-2016 was conducted. The study aims to determine: (1) the development of the number of international publications in the field of instrumentation on the Scopus database from 2006-2016; (2) core journals in international publications in the field of instrumentation; (3) productivity of instrumentation researcher; (4) number of documents based on agency collaboration in international publications in the field of instrumentation; (5) the development of international publications of field research instrumentation by subject; (6) maps of international publications development of research in the field of instrumentation by keyword (co-word) and based on the author (co-author). Data collection by searching through scopus with keyword instrumentation, instrumens, measurements, medical instrumentation, virtual instrumentation and instrumentation system with category article title, abstract, keywords in the period 2006-2016. Data in the form of number of publications per year, journals containing articles of instrumentation, author, author and subject are analyzed using Microsoft Excel 2010. As for the development trend of international publications in the field of instrumentation is analyzed using VosViewer software. The results showed that the development of the field of instrumentation sciences during the period 2006-2016 which was scanned in the highest scopus occurred in 2014 which reached 310 documents (14,90%). The international publication of the field of instrumentation is mostly published in the journal Spine. Universidade de Sao Paulo - USP is the most widely published institution in the field of instrumentation science and the United States is the largest contributor. Yazici, M., Zhang, H.Q., and Aubin, C.E. is a prolific writer in the field of instrumentation with the most subjects in medicine and engineering. The map of instrumentation development based on the coword grouped into 5 clusters and the co-authors clustered into 7 clusters.

Nanoindentation of crystalline silicon pillars fabricated by soft UV nanoimprint lithography and cryogenic deep reactive ion etching

Abstract: Nanomechanical properties of bulk and micro-pillared monocrystalline silicon are experimentally investigated using nanoscale depth-sensing indentation technique. Silicon pillar arrays with different crystal orientations, i.e., Si , Si , and Si , are prepared by means of a top-down approach consisting of nanoimprint lithography and cryogenic dry etching. A three-sided Berkovich tip used during the experiments has provided highly resolved load-depth-curves and imprinted hardness impressions on the silicon materials. Depending on the aspect ratio of the pillars, the axial stiffness of the objects under measurement has to be considered. Corrected values of the elastic modulus are determined revealing direct nanomechanical comparison between silicon bulk and pillar structures. In summary, enhanced comprehension of elastic-plastic-response occurred within micro-structured silicon materials is shown, providing the potential to use silicon pillar arrays as fundamental material for accurate force measurements.