Results 21 to 30 of about 1,381,218 (267)

Production of hydrogen gas from biomass oil palm empty fruit bunch using electrolysis method [PDF]

open access: yesMATEC Web of Conferences, 2019
Biomass oil palm empty fruit bunch (OPEFB) is a sustainable source for hydrogen production. OPEFB and FeCl3.6H2O oxidizers (0.1, 0.2, 0.3 and 0.4 mol) were refluxed at 90-98 ° C for 5 hours.
Amri Resti Yunia   +3 more
doaj   +1 more source

Vibration suppression of advanced plates embedded magnetostrictive layers via various theories

open access: yesJournal of Materials Research and Technology, 2020
Vibration suppression analysis of a laminated composite plate embedded magnetostrictive layers is presented with/without the transverse shear and normal strains effects are taken into account in this study.
Ashraf M. Zenkour, Hela D. El-Shahrany
doaj   +1 more source

Bio-Friendly Alternatives for Xylene – Carrot oil, Olive oil, Pine oil, Rose oil [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2015
Background: Xylene is a flammable liquid with characteristic petroleum or aromatic odours, it is miscible with most of the organic solvents and paraffin wax.
Sugunakar Raju Godishala Swamy   +4 more
doaj   +1 more source

Micro Coriolis mass flow sensor for chemical micropropulsion systems [PDF]

open access: yes, 2012
We have designed a micromachined micro Coriolis flow sensor for the measurement of hydrazine (N2H4, High Purity Grade) propellant flow in micro chemical propulsion systems [1].
Dijkstra, M.   +4 more
core   +10 more sources

Aportes de la Historia y la Filosofía en la enseñanza de las ciencias a partir de la actividad experimental asociada a la hidráulica

open access: yesGóndola, Enseñanza y Aprendizaje de las Ciencias, 2022
This paper collects advances in the research project on the history and philosophy of sciences in physics teaching,focused on hydraulics. The research question regarding social needs, inequality, and social vulnerability during the first quarter of the ...
Helga Almeida Sánchez   +1 more
doaj   +1 more source

Research on Blade Design of Lift–Drag-Composite Tidal-Energy Turbine at Low Flow Velocity

open access: yesEnergies, 2021
The research on tidal-current energy-capture technology mainly focuses on the conditions of high flow velocity, focusing on the use of differential pressure lift, while the average flow velocity in most sea areas of China is less than 1.5 m/s, especially
Chuhua Jiang   +4 more
doaj   +1 more source

Mathematical methods and models for radiation carcinogenesis studies [PDF]

open access: yes, 1986
Research on radiation carcinogenesis requires a twofold approach. Studies of primary molecular lesions and subsequent cytogenetic changes are essential, but they cannot at present provide numerical estimates of the risk of small doses of ionizing ...
A.M. Kellerer   +25 more
core   +1 more source

ANALISIS ALTERNATIF DALAM MERANCANG BALOK TINGGI MENGGUNAKAN STRUT AND TIE MODEL

open access: yesTeras Jurnal: Jurnal Teknik Sipil, 2021
Abstrak   Perencanaan struktur beton biasanya dilakukan dengan berdasarkan asumsi dari Bernoulli dan Navier untuk menganalisis penampang akibat momen lentur.
Nisa Luthfiana, Yulita Arni Priastiwi
doaj   +1 more source

Research on Mathematical Model of Oxygen Content in Bell Furnace Based on Industrial Data

open access: yesChemical Engineering Transactions, 2020
A model of the oxygen content in the bell furnace is obtained by taking the furnace leakage flow into consideration based on the method of mechanism modelling. On the basis of mass conservation law, the relationship between the oxygen content in the bell
Tian-Bo Peng, Lu Xiao, Hao Chen
doaj   +1 more source

Theory of optimum shapes in free-surface flows. Part 2. Minimum drag profiles in infinite cavity flow [PDF]

open access: yes, 1972
The problem considered here is to determine the shape of a symmetric two-dimensional plate so that the drag of this plate in infinite cavity flow is a minimum.
Whitney, Arthur K.
core   +1 more source

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