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All Journal BERITA BIOLOGI Dinamika Teknik Mesin
N. UTAMI
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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PENYERBUKAN PADA PINANG YAKI (ARECA VESTIARIA) DI KEBUN RAYA BOGOR N. UTAMI; SIH KAHONO
BERITA BIOLOGI Vol 3, No 9 (1989)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i9.1300

Abstract

N. UTAMI & SIH KAHONO. 1988. Pollination on the pinang yaki (Areca vestiaria Giseke) in the Bogor Botanical Gardens. Berita Biologi 3(9): 470 -472.Morphology,flowering biology of the pinang yaki was observed at the Bogor Botanical Gardens.This plant i&imonocious and self pollinated. However,insect visitors appear to play an importantrole of fruit setting.It was showed that the number of fruits setting in isolated inflorescence were smaller than in unisolated inflorescence.During anthesis,the inflorescence were visited by ten species of insects,and Trigona iridipennis was suspected as the palm pollinator.
Uji tarik komposit serat pandan alam sebagai komponen material bahan pengganti alternatif aluminium A. Bawono; I. Suroso; N. Utami
Dinamika Teknik Mesin Vol 13, No 2 (2023): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v13i2.583

Abstract

Seaplanes are aircraft that can land in the waters, this can be done because seaplanes have floaters. Floaters have a role so that the aircraft can float on the water. However, due to the fairly frequent interaction with water, it is necessary to have anti-corrosion treatment, this is because the use of metal as the basic material for making floaters is still dominant. Corrosion can be minimized by using composites as the constituent material. Making composites that can use fibres from nature can also be done such as the use of thorn pandanus fibres so that it will add more material value. In terms of mechanical strength, it is necessary to test to find out how strong the composite material of thorn pandan fibres is. In this study, composite manufacturing was carried out using the vacuum bagging method. The variation for fibre treatment is the duration of soaking time in 3 types of solutions, namely seawater, household wastewater, and river water. Material testing uses tensile tests. The results of tensile show that the relationship of immersion time to tensile strength in household wastewater is the best, all graphs tend to rise as the duration of immersion time increases.
Co-Authors A. Bawono I. Suroso Sih Kahono