Results 21 to 30 of about 10,233 (262)

User Interface and RF-Front End Design for Radio Direction Finding-Miniature Unmanned Air Vehicles (RDF-MUAV) [PDF]

open access: yes, 2020
Radio direction finding perform better at high altitude due to greater line of sight coverage. In this paper, the radio direction finding-miniature unmanned air vehicles (RDF-MUAVs) platform able to localize the beacon by accessing the direction of ...
A. Majid, Huda   +3 more
core   +1 more source

ANALISIS PENGARUH ALKALISASI NaOH TERHADAP SERAT NANAS SEBAGAI PENGUATAN BIO KOMPOSIT

open access: yesOtopro, 2022
This research focuses on the utilization of natural fibers as a reinforced composite material from pineapple leaf fiber with concentrations of Alkali NaOH 5%, 10%, 15% using a polyester resin matrix.
Edi Widodo, Ilham Dwiyoga
doaj   +1 more source

Mechanical Characterization of Aluminum Sandwich Structures with Woven-Ply Pineapple Leaf/Glass Fiber-Reinforced Hybrid Composite Core

open access: yesJournal of Natural Fibers, 2023
Fiber-metal laminates consisting of alternating metal and fiber-reinforced polymer layers have displayed remarkable performance in several engineering applications.
Lin Feng Ng   +5 more
doaj   +1 more source

Optimization of Fermentable Sugar Production from Pineapple Leaf Waste (Ananas comosus [L.] Merr) by Enzymatic Hydrolysis

open access: yesJurnal Presipitasi, 2021
Pineapple leaf waste is one agricultural waste that has high cellulose content. Pineapple leaf waste's complex structure contains a bundle of packed fiber that makes it hard to remove lignin and hemicellulose structure, so challenging to produce reducing
Yohanita Restu Widihastuty   +2 more
doaj   +1 more source

Second-generation ethanol from pineapple leaf fibers [PDF]

open access: yesJournal of Natural Fibers, 2018
The use of different lignocellulosic residues for the production of cellulosic ethanol is an alternative for the expanding demand of this fuel without increasing the planting area of traditional carbohydrate crops. One of the proposed alternatives is the use of pineapple leaf fibers (PALF) residues, which is a material rich in cellulose that can be ...
Silva, Claudemir Natalino da   +3 more
openaire   +4 more sources

Potential of natural fiber composite materials for bulletproof vest applications

open access: yesDefense and Security Studies, 2023
The bulletproof vest material that is often used is a composite material. Composites are a mixture of two or more material elements, with different mechanical properties, which aim to obtain new materials that have better mechanical properties than the ...
Ilham Rizqi Aminudin, Sovian Aritonang
doaj   +1 more source

Development of indirect evaporative cooler based on a finned heat pipe with a natural-fiber cooling pad

open access: yesHeliyon, 2022
Evaporative cooler is one of the methods that have been used to keep buildings at a comfortable temperature since ancient times. This type of cooler is particularly suitable for hot and arid areas.
Evi Sofia   +2 more
doaj   +1 more source

A review on pineapple leaves fibre and its composites [PDF]

open access: yes, 2015
Natural fibre based composites are under intensive study due to their ecofriendly nature and peculiar properties. The advantage of natural fibres is their continuous supply, easy and safe handling, and biodegradable nature.
Abdan, Khalina   +6 more
core   +6 more sources

Influence of sampling area and extraction method on the thermal, physical and mechanical properties of Cameroonian Ananas comosus leaf fibers

open access: yesHeliyon, 2022
The wide dispersion of the properties of plant fiber bundles further limits their use. In this study, manual and retting methods were used to extract fiber bundles from the available and underutilized Ananas comosus (AC) leaf waste in Cameroon.
Achille Désiré Omgba Betené   +7 more
doaj   +1 more source

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