Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The weathering and corrosion of depleted uranium (DU) forms a complex series of oxidation reactions, ultimately resulting in metaschoepite, UO3.2H2O. The present work focused on studying the dissolution rate of synthetic UO3. 2H2O using batch and flow-through reactors. Under acidic conditions (pH = 4.4-5.4), atmospheric CO2, room temperature, and 0.1 mionic strength,the log solubility product, log Ksp = 5.26 at equilibrium and a pH-dependent rate law Ro = (0.30 +/- 0.15)[H+]0.83+/-0.1 were established. For consistency, these results were incorporated into the computer program PHREEQC 2.6, and the experimental conditions were simulated. There is generally good agreement between the experimental results and the modeled results. Batch experiments revealed a fast dissolution rate of UO3.2H20 in the first hour, followed by fluctuations in uranium concentration before equilibrium was attained after 3000 h.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/es050678k | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Small Extracellular Vesicles as Biomarkers in Sarcoma Follow-Up: Protocol for a Prospective, Multicentric Pilot Study.
JMIR Res Protoc
September 2025
Department of Medical Oncology, Early Phase Unit, Georges-François Leclerc Centre, Dijon, France.
Background: Sarcomas are rare cancer with a heterogeneous group of tumors. They affect both genders across all age groups and present significant heterogeneity, with more than 70 histological subtypes. Despite tailored treatments, the high metastatic potential of sarcomas remains a major factor in poor patient survival, as metastasis is often the leading cause of death.
View Article and Find Full Text PDFTheoretical Study of Ru-Catalyzed Decarboxylative Heteroarylation of Aryl Carboxylic Acids.
J Org Chem
September 2025
State Key Laboratory of Chemical Resource Engineering, Institute of Computational Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China.
The -di(2-pyridyl)arenes, featuring a unique structure, hold significant promise for applications in fluorescent probes, synthetic nanoparticle stabilizers, and chemical synthesis. The mechanism of Ru-catalyzed decarboxylation and heteroarylation reactions of aryl carboxylic acids to access -dipyridylarenes was elucidated using DFT calculations, which involved C-H bond activation, oxidative addition, reductive elimination, and decarboxylation processes to form -di(2-pyridyl)arenes. The rate-determining step of the reaction is the second reductive elimination step with an energy barrier of 27.
View Article and Find Full Text PDFExploration of the Chemical Components and Biological Activities of Hippophae salicifolia Extracts: In Vitro, Molecular Docking, and MD Simulation Approaches.
Chem Biodivers
September 2025
Department of Biology, Faculty of Science, Selçuk University, Konya, Turkey.
Hippophae salicifolia, commonly known as sea buckthorn, is native to the Indian Himalayan region. This study is the first to comprehensively assess the phytochemical profile and biological activities of H. salicifolia leaves extracted through maceration, infusion, and percolation (Soxhlet apparatus) methods.
View Article and Find Full Text PDFTitanium dioxide nanoparticles as a promising tool for efficient separation of trace DNA via phosphate-mediated desorption.
Mikrochim Acta
September 2025
Department of Public Health Laboratory Sciences, College of Public Health, Hengyang Medical School, University of South China, 28 Changsheng West Road, Hengyang, 421001, Hunan, China.
We systematically evaluated the DNA adsorption and desorption efficiencies of several nanoparticles. Among them, titanium dioxide (TiO₂) nanoparticles (NPs), aluminum oxide (Al₂O₃) NPs, and zinc oxide (ZnO) NPs exhibited strong DNA-binding capacities under mild conditions. However, phosphate-mediated DNA displacement efficiencies varied considerably, with only TiO₂ NPs showing consistently superior performance.
View Article and Find Full Text PDFExploring the therapeutic potential of L-arginine in chronic anal fissure management: a comprehensive review.
Amino Acids
September 2025
Colorectal Research Center, Iran University of Medical Sciences, Tehran, 1445613131, Iran.
Anal fissure causes pain and bleeding during or after bowel movements, significantly impacting individuals' quality of life. Current treatments aim to interrupt this cycle but have associated risks and limitations. The emergence of arginine, crucial for protein creation and nitric oxide (NO) production, presents an intriguing therapeutic avenue by the impact on reducing anal sphincter pressure and enhancing anoderm blood flow, due to its roles in vasodilation, anti-inflammatory responses, and collagen synthesis, which can promote wound healing and highlighting its potential as an alternative therapy.
View Article and Find Full Text PDF