Confocal Raman Spectroscopy Coupled With In Vitro Permeation Testing To Study The Effects Of Formalin Fixation On The Skin Barrier Function Of Reconstructed Human Epidermis, 2024 UPR CNRS 4301 CBM, département NMNS « NanoMédicaments et NanoSondes », Université de Tours, 31 avenue Monge, 37200 Tours.
Confocal Raman Spectroscopy Coupled With In Vitro Permeation Testing To Study The Effects Of Formalin Fixation On The Skin Barrier Function Of Reconstructed Human Epidermis, Hichem Kichou, Franck Bonnier, Amanda C. Caritá, Hugh Byrne, Igor Choupra, Emilie Munnier
Articles
Confocal Raman Spectroscopy is recognised as a potent tool for molecular characterisation of biological specimens. There is a growing demand for In Vitro Permeation Tests (IVPT) in the pharmaceutical and cosmetic areas, increasingly conducted using Reconstructed Human Epidermis (RHE) skin models. In this study, chemical fixation of RHE in 10% Neutral Buffered Formalin for 24 hours has been examined for storing RHE samples at 4°C for up to 21 days. Confocal Raman Spectroscopy, combined with Principal Components Analysis, revealed the molecular-level effects of fixation, notably in protein and lipid conformation within the stratum corneum and viable epidermis. IVPT by means …
Single Nanobubble Formation On Au Nanoelectrodes And Au@Ws2 Nanoelectrodes: Voltammetric Analysis And Electrocatalysis, 2024 Anhui Province Key laboratory of biomedical materials and chemical measurement, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P.R. China
Single Nanobubble Formation On Au Nanoelectrodes And Au@Ws2 Nanoelectrodes: Voltammetric Analysis And Electrocatalysis, Xian-Zhun Luo, Xiao-Hu Chen, Yong-Xin Li
Journal of Electrochemistry
Taking advantage of the extremely small size of the gold nanodisk electrode, the single hydrogen nanobubble generated on the surface of the nanoelectrode was studied to evaluate its hydrogen evolution performance. It was found that compared with the bare gold nanodisk electrode, the bubble formation potential of the gold nanodisk electrode modified with tungsten disulfide quantum dots (WS2 QDs) on the surface was more positive, indicating that its hydrogen evolution activity was higher. Microdynamic model analysis shows that the average standard rate constant of the rate-determining step of the hydrogen evolution reaction of gold nanoelectrodes modified with WS2 …
Efficient Phosphate Removal From Water Using Ductile Cast Iron Waste: A Response Surface Methodology Approach, 2024 The British University in Egypt
Efficient Phosphate Removal From Water Using Ductile Cast Iron Waste: A Response Surface Methodology Approach, Mai Hassan Dr., Nada Alkhashab Eng., Ahmed Osman Dr., Dalia A. Ali Eng
Chemical Engineering
Water scarcity is a critical issue worldwide. This study explores a novel method for addressing this issue by using ductile cast iron (DCI) solid waste as an adsorbent for phosphate ions, supporting the circular economy in water remediation. The solid waste was characterized using XRD, XRF, FTIR, and particle size distribution. Wastewater samples of different phosphate ion concentrations are prepared, and the solid waste is used as an adsorbent to adsorb phosphate ions using different adsorbent doses and process time. The removal percentage is attained through spectrophotometer analysis and experimental results are optimized to get the optimum conditions using Design …
A Study On Biochar Properties Toward Their Effects On Adsorption Mechanisms For Aromatic Organic Compounds In Water, 2024 Western University
A Study On Biochar Properties Toward Their Effects On Adsorption Mechanisms For Aromatic Organic Compounds In Water, Griffin Loebsack
Electronic Thesis and Dissertation Repository
Biochar, a carbon-rich by-product of the pyrolytic processing of lignocellulosic biomass in a zero or low-oxygen environment, has the potential application as a promising adsorbent for the elimination of a variety of pollutants. This work proposes and outlines a detailed method to investigate the adsorption mechanisms of biochar towards organic compounds in water, which was used to investigate a range of biochars with the objective of determining what compounds biochars are best suited to adsorb in real-world applications. Ibuprofen, acetaminophen, methyl orange and methylene blue were selected as four test compounds that are representative of organic pollutants and were used …
Application Of High-Resolution Nano-Scale Liquid Chromatography Tandem Mass Spectrometry To The Study Of S. Endobioticum-Induced Infection In Cultivated Potatoes, 2024 Western University
Application Of High-Resolution Nano-Scale Liquid Chromatography Tandem Mass Spectrometry To The Study Of S. Endobioticum-Induced Infection In Cultivated Potatoes, Daria Baskova
Electronic Thesis and Dissertation Repository
Potato wart is an infection of cultivated potato plants caused by the soil-borne biotrophic fungus Synchitrium endobioticum. The main symptoms of infection are formation of warts on the tuber tissue and the production of biflagellated mobile spores that undergo long-lasting dormancy periods. Genomic studies have significantly contributed to an overall understanding of the fungal life cycle, including the discovery of the first S. endobioticum avirulence genes, and the identification of multiple pathotypes. However, the molecular pathways involved in host-pathogen interactions during potato wart infection and the factors contributing to resistance in plants remain unknown. In this work, a combination …
The Reveal: A Technical Study And Conservation Treatment Of An Overpaint Portrait, 2024 SUNY University at Buffalo
The Reveal: A Technical Study And Conservation Treatment Of An Overpaint Portrait, Camille Ferrer
Art Conservation Master's Projects
A severely damaged 19th-century oil painting depicting a portrait of a woman was treated at Patricia H. and E. Garman Art Conservation Department. A typed letter provided by the owner mentioned that it has been previously restored yet returned with unsatisfactory results. After further examination, the painting appeared to have been previously treated multiple times by different people. There was overpaint distinctly present on the face and later discovered to be present overall. The full state of condition of the painting was initially unknown due to the sum of the surface being overpainted. However, there were evidence of paint loss …
Winning Results Of The 2nd Xiamen University Short Video Abstract Contest For Science And Technology Papers, 2024 Chinese Chemical Society | Xiamen University
Winning Results Of The 2nd Xiamen University Short Video Abstract Contest For Science And Technology Papers, Editorial Office Of J.Electrochem.
Journal of Electrochemistry
No abstract provided.
Winning Works From Journal Of Electrochemistry: The 2nd Xiamen University Short Video Abstract Contest For Science And Technology Journal Papers, 2024 Chinese Chemical Society | Xiamen University
Winning Works From Journal Of Electrochemistry: The 2nd Xiamen University Short Video Abstract Contest For Science And Technology Journal Papers, Editorial Office Of J.Electrochem.
Journal of Electrochemistry
No abstract provided.
2024 Electrochemical Research Paradigm Summer School Was Successfully Held, 2024 Chinese Chemical Society | Xiamen University
2024 Electrochemical Research Paradigm Summer School Was Successfully Held, Editorial Office Of J.Electrochem.
Journal of Electrochemistry
No abstract provided.
2024 World Fuel Cell Conference Held In Ningbo, Zhejiang, 2024 Chinese Chemical Society | Xiamen University
2024 World Fuel Cell Conference Held In Ningbo, Zhejiang, Editorial Office Of J.Electrochem.
Journal of Electrochemistry
No abstract provided.
Upcoming Meeting-The 1st Young Investigator Symposium On Electrosynthesis, Chinese Chemical Society, 2024 Chinese Chemical Society | Xiamen University
Upcoming Meeting-The 1st Young Investigator Symposium On Electrosynthesis, Chinese Chemical Society, Editorial Office Of J.Electrochem.
Journal of Electrochemistry
No abstract provided.
The Characterization And Electrochemistry Of Natural Uranium Dioxide Under Long-Term Disposal Conditions, 2024 The University of Western Ontario
The Characterization And Electrochemistry Of Natural Uranium Dioxide Under Long-Term Disposal Conditions, Martin D. M. Badley
Electronic Thesis and Dissertation Repository
This thesis describes the studies performed on a number of natural uranium dioxide (UO2) specimens to determine a range of reactivities. This work will support the safety case for the long-term disposal of spent nuclear fuel in Canada. Under relevant long-term disposal conditions, water radiolysis could produce oxidizing conditions at the surface of the fuel, potentially leading to fuel corrosion and the release of radionuclides into the groundwater. The rate of such a process would be determined by the radiation dose rate from the fuel and the reactivity of the fuel, which will be determined by its composition, …
Impaired Waters: New Treatments And Improved Methods For Pfas And Algae Toxins, 2024 University of South Carolina
Impaired Waters: New Treatments And Improved Methods For Pfas And Algae Toxins, Alexandria Forster
Theses and Dissertations
Per- and polyfluoroalkyl substances (PFAS) are high-profile environmental contaminants, many having long persistence in the environment and widespread presence in humans and wildlife. Following phase-out of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in North America and restrictions in Europe, PFAS replacements are now widely found in the environment. While liquid chromatography (LC)-mass spectrometry (MS) is typically used for measurement, much of the PFAS is missed. To more comprehensively capture organic fluorine, we developed sensitive and robust methods using activated carbon adsorption, solid phase extraction, and combustion ion chromatography (CIC) to measure total organic fluorine (TOF) in industrial wastewaters, river …
Northern Fur Ssal Vibrissae Organochlorine Contaminant Concentrations, 2024 Nova Southeastern University
Northern Fur Ssal Vibrissae Organochlorine Contaminant Concentrations, Dimitri Giarikos, Amy Hirons, Courtney White
SECLER Data
The eastern Pacific stock of northern fur seals (Callorhinus ursinus) on the Pribilof Islands has experienced population declines since 1980. The decline may be due to anthropogenic persistent organic pollutants (POPs) which bioaccumulate, are toxic, and persistent. This study conducted a comparison of 21 organochlorine (OC) and 39 polybrominated diphenyl ether (PBDE) analyte concentrations utilizing archived vibrissae (whiskers) from individual fur seals sampled in 1993 (n=30) and 2013 (n=41). The PBDEs had values five times greater than the legacy status OCs. There were no significant mean concentration differences between 1993 and 2013 for total organochlorines (ΣOCs), or total …
Northern Fur Seal Vibrissae Polybrominateddiphenylether Concentrations, 2024 Nova Southeastern University
Northern Fur Seal Vibrissae Polybrominateddiphenylether Concentrations, Dimitri Giarikos, Amy Hirons, Courtney White
SECLER Data
The eastern Pacific stock of northern fur seals (Callorhinus ursinus) on the Pribilof Islands has experienced population declines since 1980. The decline may be due to anthropogenic persistent organic pollutants (POPs) which bioaccumulate, are toxic, and persistent. This study conducted a comparison of 21 organochlorine (OC) and 39 polybrominated diphenyl ether (PBDE) analyte concentrations utilizing archived vibrissae (whiskers) from individual fur seals sampled in 1993 (n=30) and 2013 (n=41). The PBDEs had values five times greater than the legacy status OCs. There were no significant mean concentration differences between 1993 and 2013 for total organochlorines (ΣOCs), or total …
Making And Breaking Bonds: Studying Intrinsic Chemistry In The Gas-Phase, 2024 Duquesne University
Making And Breaking Bonds: Studying Intrinsic Chemistry In The Gas-Phase, Luke Metzler
Electronic Theses and Dissertations
The nature of chemical interactions can be difficult to ascertain in the condensed phase; chemistry can be observed, but with the plethora of variables such as solvation, mixes of counter-ions, and complex equilibria, the true intrinsic chemical properties of a given chemical species may be obfuscated. By conducting research in the gas-phase, many of these variables can be reduced, if not eliminated entirely, which can allow for the careful observation of the true physical phenomena driving chemical reactivity.
The research presented herein focuses on the use of ion-trapping (specifically in a linear ion trap) as a method for unveiling the …
Green Synthesis Of Carbonized Chitosan-Fe3o4-Sio2 Nano-Composite For Adsorption Of Heavy Metals From Aqueous Solutions, 2024 The British University in Egypt
Green Synthesis Of Carbonized Chitosan-Fe3o4-Sio2 Nano-Composite For Adsorption Of Heavy Metals From Aqueous Solutions, Dalia A. Ali Eng, Rinad Galal Ali Eng.
Chemical Engineering
Water pollution with heavy metals owing to industrial and agricultural activities have become a critical dilemma to humans, plants as well as the marine environment. Therefore, it is of great importance that the carcinogenic heavy metals present in wastewater to be eliminated through designing treatment technologies that can remove multiple pollutants. A novel green magnetic nano-composite called (Carbonized Chitosan-Fe3O4-SiO2) was synthesized using Co-precipitation method to adsorb a mixture of heavy metal ions included; cobalt (Co2+), nickel (Ni2+) and copper (Cu2+) ions from aqueous solutions. The novelty of this study was the synthesis of a new
nano-composite which was green with …
Method Development For The Quantification Of Critically Valuable Elements In Permian Basin Produced Waters, 2024 University of Texas at El Paso
Method Development For The Quantification Of Critically Valuable Elements In Permian Basin Produced Waters, Carley Oliver
Open Access Theses & Dissertations
Produced waters (PW) are a major byproduct of the oil and gas industrial hydraulic fracturing processes that create a major waste disposal issue with a need for disposal, treatment, and reuse method developments. The current primary disposal method is subsurface injection, which can lead to high pressures in the subsurface. PWs are often highly saline from mineral leaching due to long residence in subsurface reservoirs. According to the USGS National Minerals Information Center, bromine, calcium chloride, iodine, lithium, magnesium, and sodium chloride have been found in and extracted from these domestic subsurface brines, suggesting that there may be other economically …
High-Resolution Ion Mobility Analysis Of Isomeric Bile Acids Using Structures For Lossless Ion Manipulations (Slim) Im-Ms, 2024 Clemson University
High-Resolution Ion Mobility Analysis Of Isomeric Bile Acids Using Structures For Lossless Ion Manipulations (Slim) Im-Ms, Emmaleigh D. Efird
All Theses
Bile acids are an essential part of the human digestion system and play an important role in lipid absorption, bacteria movement in the small intestine, and regulation of the farnesoid X receptor (FXR) and G protein-coupled bile acid receptors (GPBAR) responsible for homeostasis. They are synthesized in the liver, stored in the gallbladder and the excess is carried on to the small intestine. Many liver and intestinal diseases are diagnosed based on bile acid metabolism pathways and the structures of those bile acids. Therefore, the bile acid structure determines the function of the molecule. Many bile acids are similar in …
Assessment Of Tce And Chiral Pcb Dechlorination Rate, Congener Diversity, And Enantioselectivity In Town Creek, Sc, Usa Sediment Microcosms, 2024 Clemson University
Assessment Of Tce And Chiral Pcb Dechlorination Rate, Congener Diversity, And Enantioselectivity In Town Creek, Sc, Usa Sediment Microcosms, Catherine P. Sumner
All Dissertations
Polychlorinated biphenyls (PCBs) and trichloroethene (TCE) are ubiquitous contaminants and are recognized as persistent organic pollutants due to their extreme chemical stability. PCBs were manufactured by chlorinating biphenyls that created 209 congeners with various structures, of which 19 are chiral and can exist as a pair of stable atropisomers. PCBs have been known to cause developmental and neurological toxicity in humans and wildlife; they can act as endocrine disrupters, carcinogens, and teratogens. Sangamo Weston Inc. was an industrial plant located near Town Creek in Pickens Country, South Carolina, that manufactured capacitors and used Aroclors 1016 and 1254 as dialectic fluids …