Results 31 to 40 of about 403,665 (299)

ANALISIS KIMIA BATANG AREN (ARENGA PINNATA MERR) YANG BERASAL DARI CIANJUR DAN ANALISIS PENDAHULUAN KAYU AREN YANG BERASAL DARI SUMATERA BARAT

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
This article describes  about  Chemical  analysis of aren stem  (Arenga  pinnata  Mcrr) from   Cianjur  and preliminary   analysis aren wood from   West Sumatera.
Gusmailina Gusmailina, Hartoyo Hartoyo
doaj   +1 more source

Composition, strength and workability of alkali-activated metakaolin based mortars [PDF]

open access: yes, 2011
This study has investigated the joint effect of several factors on the workability and mechanical strength of alkali-activated metakaolin based mortars.
Ding, Yining   +3 more
core   +1 more source

Fresh properties and compressive strength of high calcium alkali activated fly ash mortar

open access: yesJournal of King Saud University: Engineering Sciences, 2017
This paper reports the fresh properties and compressive strength of high calcium alkali-activated fly ash (AAFA) mortar. Two different sources of class C fly ash, with different chemical compositions were used to prepare alkali-activated mortar mixtures.
Eslam Gomaa   +3 more
doaj   +1 more source

Revisiting the hydrogen storage behavior of the Na-O-H system [PDF]

open access: yes, 2015
Solid-state reactions between sodium hydride and sodium hydroxide are unusual among hydride-hydroxide systems since hydrogen can be stored reversibly. In order to understand the relationship between hydrogen uptake/release properties and phase/structure ...
Gregory, Duncan H.   +2 more
core   +2 more sources

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

THE SODIUM HYDROXIDE-SODIUM HYDRIDE SYSTEM [PDF]

open access: yes, 1957
Portions of the NaOH-NaH phase diagram were studied by means of differential thermal analysis. Under certain conditions NaH will either react with NaOH according to the equation NaH + NaOH in equilibrium Na/sub 2/O + H/ sub 2/ or thermally dissociate according to the equation NaH in equilibrium Na + 1/2 H/sub 2/.
Kerzner, M.S., Kelly, H.C., Johnson, S.
openaire   +2 more sources

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

Establishing an assay to evaluate d‐amino acid oxidase enzyme kinetics and inhibition using WST‐8 redox dye

open access: yesFEBS Open Bio, EarlyView.
This study investigated a novel WST‐8‐based assay for evaluating d‐Amino acid oxidase (DAO) inhibitors. We confirmed its effectiveness using known inhibitors and found that uremic toxins possess relatively weak inhibitory activity compared to existing drugs.
Kahoko Miyake   +4 more
wiley   +1 more source

Ultrasound to Enhance a Liquid–Liquid Reaction [PDF]

open access: yes, 2010
Liquid–liquid mass transfer with ultrasound was investigated experimentally during the hydrolysis of n-amyl acetate. Power ultrasound is supposed to improve the yield and kinetics of such multiphase chemical reactions thanks to the mechanical effects of ...
Abismaï   +7 more
core   +2 more sources

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

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