Results 1 to 10 of about 944,725 (293)

Synthesis and solubility of hopeite Zn3(PO4)2·4H2O

open access: yesMineralogia, 2023
Minerals from the phosphate groups are used in environmental engineering as thermodynamically stable vehicles for heavy metals such as zinc. The hopeite Zn3(PO4)2·4H2O was synthesized and characterized by X-ray diffraction and scanning electron ...
Bajda Tomasz   +2 more
doaj   +1 more source

Fabrication and Characterization of Diclofenac Sodium Loaded Hydrogels of Sodium Alginate as Sustained Release Carrier

open access: yesGels, 2021
The aim of the current study was to fabricate naturally derived polymer based hydrogels for controlled release of diclofenac sodium (DS) for a long duration of time.
Muhammad Suhail   +4 more
doaj   +1 more source

Critical rate analysis for CO2 injection in depleted gas field, Sarawak Basin, offshore East Malaysia

open access: yesCarbon Management, 2022
This study aimed to address the challenges and strategies to determine the critical rate of CO2 injection into a carbonate depleted gas field. In this research, the critical rate is the maximum allowable injection rate before formation damage initiation.
Nur Zafirah Mat Razali   +5 more
doaj   +1 more source

Dissolution Behavior of Hydrothermally Treated Hydroxyapatite–Titanium Nitride Films Coated on PEEK: In Vitro Study

open access: yesJournal of Functional Biomaterials, 2022
Polyetheretherketone (PEEK) has become an alternative material for orthopaedics and dental implants. However, bio-inertness is an important limitation in this material.
Siriwat Boonpok   +4 more
doaj   +1 more source

Enhancing the Stability of a Pt‐Free ORR Catalyst via Reaction Intermediates

open access: yesAdvanced Materials Interfaces, 2023
Finding a platinum‐free cathode catalyst that effectively models the oxygen reduction reaction (ORR) of a proton‐exchange membrane (PEM) fuel cell cathode better than the current commercial Pt/C catalyst has been a major shortcoming in fuel cell ...
Naomi Helsel, Pabitra Choudhury
doaj   +1 more source

Validation of a dissolution method with RP-HPLC analysis for Perindopril erbumine and Indapamide combination tablet [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
A Dissolution method with high performance liquid chromatography (HPLC) analysis was validated for perindopril erbumine and indapamide in combination tablet formulation.
Jain P.S.   +4 more
doaj   +1 more source

Leaching Chalcopyrite with High MnO2 and Chloride Concentrations

open access: yesMetals, 2020
Most copper minerals are found as sulfides, with chalcopyrite being the most abundant. However; this ore is refractory to conventional hydrometallurgical methods, so it has been historically exploited through froth flotation, followed by smelting ...
David Torres   +6 more
doaj   +1 more source

Quantifying susceptibility of marine invertebrate biocomposites to dissolution in reduced pH [PDF]

open access: yesRoyal Society Open Science, 2019
Ocean acidification threatens many ecologically and economically important marine calcifiers. The increase in shell dissolution under the resulting reduced pH is an important and increasingly recognized threat.
Matthew Chadwick   +4 more
doaj   +1 more source

Effects of Carbonate Minerals on Shale-Hydraulic Fracturing Fluid Interactions in the Marcellus Shale

open access: yesFrontiers in Earth Science, 2021
Natural gas extracted from tight shale formations, such as the Marcellus Shale, represents a significant and developing front in energy exploration. By fracturing these formations using pressurized fracturing fluid, previously unobtainable hydrocarbon ...
Brennan Ferguson   +5 more
doaj   +1 more source

Gallstone Dissolution

open access: yesGastroenterology, 1982
non c'è
PONZ DE LEON, Maurizio, CARULLI, Nicola
openaire   +3 more sources

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