PEMBUATAN DAN KARAKTERISASI ARANG AKTIF DARI BAMBU APUS (Gigantochloa apus) DENGAN AKTIVATOR H3PO4
نویسندگان
چکیده
منابع مشابه
Flight speeds of swifts (Apus apus): seasonal differences smaller than expected.
We have studied the nocturnal flight behaviour of the common swift (Apus apus L.), by the use of a tracking radar. Birds were tracked from Lund University in southern Sweden during spring migration, summer roosting flights and autumn migration. Flight speeds were compared with predictions from flight mechanical and optimal migration theories. During spring, flight speeds were predicted to be hi...
متن کاملAnnual 10-Month Aerial Life Phase in the Common Swift Apus apus
The common swift (Apus apus) is adapted to an aerial lifestyle, where food and nest material are captured in the air. Observations have prompted scientists to hypothesize that swifts stay airborne for their entire non-breeding period [1, 2], including migration into sub-Saharan Africa [3-5]. It is mainly juvenile common swifts that occasionally roost in trees or buildings before autumn migratio...
متن کاملConfronting the winds: orientation and flight behaviour of roosting swifts, Apus apus.
Swifts, Apus apus, spend the night aloft and this offers an opportunity to test the degree of adaptability of bird orientation and flight to different ecological situations. We predicted the swifts' behaviour by assuming that they are adapted to minimize energy expenditure during the nocturnal flight and during a compensatory homing flight if they become displaced by wind. We tested the predict...
متن کاملTwilight ascents by common swifts, Apus apus, at dawn and dusk: acquisition of orientation cues?
a Institute for Biodiversity and Ecosystem Dynamics, Computational Geo-Ecology, University of Amsterdam, Amsterdam, The Netherlands Royal Netherlands Meteorological Institute, De Bilt, The Netherlands Department of Biology, Centre for Animal Movement Research, Lund, Sweden Military Aviation Authority, The Hague, The Netherlands Royal Netherlands Air Force, Breda, The Netherlands Radboud Univers...
متن کاملHarmonic oscillatory orientation relative to the wind in nocturnal roosting flights of the swift Apus apus.
Swifts regularly spend the night flying at high altitude. From previous studies based on tracking radar observations, we know that they stay airborne during the night and prefer to orient themselves into the wind direction with an increased angular concentration with increasing wind speed. In this study, we investigated the orientation relative to the wind of individual swifts by frequency (dis...
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ژورنال
عنوان ژورنال: Jurnal Kimia
سال: 2019
ISSN: 2599-2740,1907-9850
DOI: 10.24843/jchem.2019.v13.i01.p03