Results 31 to 40 of about 789 (161)

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang   +3 more
wiley   +1 more source

Electrochemical Processes for the Formation of Hydroxyapatite Powders

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2014
Electrochemical synthesis of hydroxyapatite particles was performed from a homogeneous solution of Na2H2EDTA.2H2O, KH2PO4 and CaCl2 without stirring to investigate the mechanism of hydroxyapa-tite formation.
Adrian Nur   +3 more
doaj   +1 more source

Cross‐Coupling Reactions in Aqueous Micellar Media

open access: yesEuropean Journal of Organic Chemistry, Accepted Article.
Thanks to their ability to efficiently and reliably construct carbon‐carbon and carbon‐heteroatom bonds, cross‐coupling reactions remain at the forefront of chemical research in both academic and industrial settings. However, the growing emphasis on sustainability has exposed the shortcomings of cross‐coupling chemistry in several areas, including the ...
Alexander Uner, Liam Thomas Ball
wiley   +1 more source

Hydrodynamic Studies on a Trickle Bed Reactor for Foaming Liquids

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2010
Hydrodynamic studies of trickle bed reactors (TBRs) are essential for the design and prediction of their performance. The hydrodynamic characteristics involving pressure drop and dynamic liquid saturation are greatly affected by the physical ...
Renu Gupta, Ajay Bansal
doaj   +1 more source

Enhanced Removal Efficiency of Malachite Green Dye Using Gambir Leaf Extract-Modified NiFe LDH Composites: A Study of Cationic Dye Adsorption

open access: yesBulletin of Chemical Reaction Engineering & Catalysis
A NiFe layered double hydroxide (LDH) composite with Uncaria gambir (UG) leaf extract was successfully synthesized. The composite (NiFe-UG LDH) and the base material (NiFe LDH) were identified using X-ray Diffraction (XRD), Fourier Transform Infra Red ...
Jefri Jefri   +2 more
semanticscholar   +1 more source

‘I Wish I Fought for Myself More Instead of Just Letting Doctors Dismiss Me’: A Combined Qualitative Analysis of Four Cohorts of Aotearoa New Zealand Endometriosis Patients

open access: yesAustralian and New Zealand Journal of Obstetrics and Gynaecology, EarlyView.
ABSTRACT Background Endometriosis is a chronic condition that affects around 10% of New Zealand women and people presumed female at birth, however, limitations in diagnosis and management mean patients wait a decade on average from symptom onset to diagnosis.
Katherine Ellis, Rachael Wood
wiley   +1 more source

Optimization Photodegradation of Methylene Blue Dye using Bentonite/PDA/Fe3O4@CuO Composite by Response Surface Methodology

open access: yesBulletin of Chemical Reaction Engineering & Catalysis
This study aims to synthesize bentonite/PDA/Fe3O4@CuO composites as a catalyst for the photodegradation of Methylene blue dye. Composite characterization involves X-ray Diffractometry (XRD), Scanning Electron Microscopy (SEM) with X-ray Energy Dispersion
F. Riyanti   +4 more
semanticscholar   +1 more source

A primitive asteroid that lived fast and died young sampled by a xenolith in the Cold Bokkeveld CM2 carbonaceous chondrite

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 3, Page 464-483, March 2025.
Abstract Xenoliths in carbonaceous chondrites include lithologies that are unrepresented in the meteorite record and so are a rich source of information on asteroid diversity. Cold Bokkeveld is a CM2 regolith breccia that contains both hydrous and anhydrous lithic clasts. Here, we describe a hydrous clast with a fine‐grained rim.
Martin R. Lee   +3 more
wiley   +1 more source

Designing A Visible Light Driven TiO2-Based Photocatalyst by Doping and Co-Doping with Niobium (Nb) and Boron (B)

open access: yesBulletin of Chemical Reaction Engineering & Catalysis
Water pollution has emerged as a significant worldwide issue, with organic pollutants being a key contributor. Titanium dioxide (TiO2) has demonstrated promising photocatalytic performance in removing organic pollutants under ultraviolet (UV) irradiation.
J. Yeoh   +5 more
semanticscholar   +1 more source

High School Students' Perspectives on Their Online Learning Experiences: A Systematic Literature Review

open access: yesJournal of Computer Assisted Learning, Volume 41, Issue 4, August 2025.
ABSTRACT Background Online learning has become a popular form of education. Prior to the Covid‐19 pandemic, online learning was mainly associated with higher education, with an incremental growth at the K‐12 level. The pandemic changed this situation rapidly.
Jia Li, Novera Roihan, Matthew McGravey
wiley   +1 more source

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