Search results for ""Author James C. Taylor""

In the first chapter of this compilation, the author reviews the sorption properties of magnetite with respect to hexavalent chromium ions and the possibility of its use as a sorbent for removing these toxic ions from contaminated aqueous solutions. In the second chapter, the authors summarize the importance of oxadiazole in medicinal chemistry for the management of various diseases. The third chapter discusses the developing technology of carbon capture and storage, a technique to reduce the impact of greenhouse gases, and how ionic liquids can be leveraged in this context. Following this, the authors describe how methanol to gasoline processes, specifically those using zeolites and zeolite-based catalysts, provide a viable alternative route for gasoline production. The final chapter proposes a revision of the standard model of photosynthesis based on new understanding generated through gravitational mass spectroscopy.

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Volume 66 begins with a focus on the development of reproducible and economical methodologies for the separation, identification and quantification of chemical species present in oils and greases. The authors discuss the major structure-function attributes of azoles as antifungal mainstays, with an intensive focus on resistant mechanisms and concurrent remedial measures. Following this, the total syntheses of biologically active natural products achieved over the past 25 years is described. The concluding study concerns methanol, a toxic substance with a neutral, colorless liquid and a mild odor.

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This edited volume contains six chapters, each detailing a recent advancement in chemistry research. Chapter One reviews the role of capillary electrophoresis in the characterization and determination of polyphenols and phenolic acids in food and beverages. Chapter Two discusses representative examples on the design and synthetic strategies used to obtain AIEgens with specific receptor units for the sensitive and selective detection of various metal ions, along with their sensing mechanism, sensing performance and applications. Chapter Three discusses the recent development of furfural and hydroxymethylfurfural synthesis and their conversion into various useful chemicals. Chapter Four reviews the importance of organic acids and the relevance of sustainable production. Chapter Five examines the effects of replacing water molecules with sodium-chloride in a typical protein in aqueous solution under exposure to microwaves. Chapter Six describes the oxidative decarboxylation of α-arylacetic acids to one-carbon dehomologated aldehydes using K2S2O8-ultraviolet radiations (UV-C at 254nm) system in aqueous solution.

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Volume 61, the classical and modern scientific references discussing the applications of charged particles are analyzed. Mathematical models of electrostatic coagulation, sorption, sedimentation of particles in the electric field, increases in wettability of a surface of particles are proposed. The authors discuss the chemistry, synthesis, structural modifications and photophysical properties of the fluorescein moiety, with special emphasis on the detection of metal ions such as Cu(II), Zn(II), Hg(II) and Fe(III) using spectrophotometric methods. Next, the geometric analysis and simulation reproduction of empirically extracted peptide coverage ratio, Î, over a nano-gold colloid surface was conducted by assuming a prolate shape of all tested amyloidogenic peptides. The following study highlights the role of analytical instrumentation and analytical methods in assessing the quality of pharmaceutical drugs. Attaining a high quality of finished products in the pharmaceutical industry is an incessant challenge that necessitates the development of fast and accurate analytical methods. In closing, the adsorption characteristics of methylene blue on purified bagasse bottom ash are investigated. The purified bagasse bottom ash adsorbent was prepared through purification of a crude BBA obtained from a sugarcane industry using a mixed solution of HCl 0.1 mol/L and HF 0.3 mol/L and followed by HNO3 5 mol/L.

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This monograph includes five chapters that detail recent advancements in chemistry research. Chapter One describes the presence of micropollutants that disrupt the endocrine system in drinking water and discusses challenges and strategies of removing these pollutants. Chapter Two covers bioactive and volatile compounds in mango and their effects on health. Chapter Three discusses the development of thymidine derivatives for treatment of COVID-19. Chapter Four focuses on the use of gold-phosphine complexes as catalysts for various C-C and C-heteroatom bond formation reactions. Chapter Five discusses the water chemistry control process in nuclear power plants.

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Advances in Chemistry Research. Volume 58 first characterizes electrochemical oxidation processes from an ecotoxicological perspective. This approach allows for the evaluation of the influence of electrochemical degradation parameters, such as electrode material or type of electrolyte, in the modulation of toxicity under different scenarios. Following this, the authors present a collection of existing knowledge on electro-fenton and anodic oxidation electrochemical processes. The choice of electrode materials plays an important role in both processes for better efficiency. A standardized procedure is proposed for analyzing humic samples of various genesis consisting of four successive methods of analysis. The results obtained in this case present a set of, semi-quantitative and quantitative parameters in the macromolecule of carboxyl, aromatic, polysaccharide and aliphatic fragments. A highly effective adsorbent for p-chlorophenol is been synthesized using magnetite nanoparticles coated with humic acids. The adsorbent is synthesized via co-precipitation of a mixed Fe3+ and Fe2+ solution using NH4OH 25% at pH 11 followed by the rapid addition of humic acids solution in NaOH 1 M. This collection also reviews the spectral and luminescent properties of humic acids, as well as identifies the impact of humic acids on the effectiveness of organic compounds photodegradation. In the concluding study, the water quench test is applied as an experimental method for thermal shock resistance testing, and the authors provide a morphological analysis of the samples before and during the testing.

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The influence of individual groups in the monomeric unit of polyamides on their physical properties is analysed in the opening chapter of Volume 55. The following chapter focuses on selected aspects of the chemistry and biology of triclabendazole, and includes not only a description of the impact of the disease fasciolosis, but also the pharmacokinetics and metabolism of triclabendazole. The author of the penultimate chapter focuses on the catalytic reaction mechanism of H2 release by solvolysis, hydro-thermolysis, and thermolysis reactions of borates. Recent advances in the fabrication of various catalysts are discussed, and recent investigations of their internal and external properties are described. The final review attempts to summarize the medicinal properties, health benefits and clinical applications of papaya. Furthermore, research and exploitation of high value-added products from papaya is discussed.

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This volume includes six chapters describing recent advancements in chemistry research. Chapter One reviews the recent progress and future prospects of blue emitters in view of efficiency and stability. Chapter Two examines the composition of cottonseed, cottonseed oil as a fuel, transesterification of cottonseed oil, and fuel properties of cottonseed oil methyl ester. Chapter Three examines the existing body of literature on the removal of various toxic cations by organobentonites in static and dynamic conditions. Chapter Four discusses the role of superoxide dismutase in oxygen elimination systems and the utility of superoxide dismutase in future therapeutics. Chapter Five reviews recent theoretical attempts to address strong electron correlation effects within the quantum emitter coupled to plasmonic metal nanoparticles. Finally, Chapter Six investigates the effect of cottonseed oil biodiesel addition in diesel fuel on the combustion, performance, and exhaust emissions of a single-cylinder diesel engine.

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Advances in Chemistry Research. Volume 57 begins with a focus on structures which core-modified porphyrins and derivatives adopt, as well as a comparison of electronic properties, including aromaticity, of core-modified porphyrins and common tetrapyrroles. Perspectives of studies and applications of core-modified tetrapyrroles are considered as well. Following this, the authors provide a brief introduction to solvation processes in pure solvents, followed by an extension of the topic to mixtures, and a thorough analysis of preferential solvation phenomena. In one study, Rhodobacter sphaeroides cytochrome c oxidase is prepared, in which n terminal histidines 3, 7, and 10 of subunit III have been replaced with glutamine residues and enzymatic activities of the isolated mutant enzyme assessed. Different aspects of the problem of the oxo-atom transfer of organometallic complexes in oxidation reactions of some organic compounds with dioxygen, under UV-irradiation, are discussed. Examples demonstrating the catalytic properties of dioxo-Mo-complexes in oxidation of the chlorinated derivatives of mono- and biphenyl substituted alkanes are presented. The authors also examine plant biomass-based substrates or waste coproducts that have been examined to determine whether they could support pullulan synthesis by the fungus A. pullulans, and identify which show the most promise for commercial pullulan production. In conclusion, clustering in aqueous solutions of H2CO3 and NaHCO3 in the mass range from 100 to 200 thousand Dalton is studied by way of gravitational mass spectroscopy. The formation of ensembles of clusters obeying the first and second Zubov equation was found.

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The first chapter of Advances in Chemistry Research. Volume 54 investigates the structure-function relationships of glycans. A recent structural analysis of oligomannose glycans, based on biophysical methods (including solution nuclear magnetic resonance and X-ray crystallographic analyses) are presented and discussed. A summary of the history, clinical uses, and pharmacokinetics of polyethylene glycol interferon are presented. Important features regarding its clinical efficacy in combination with new antiviral agents like ribavirin, telaprevir, entecavir, tenofovir, adefovir, sofosbuvir and ledipasvir are also discussed. The fluorescence properties of anthracene based ligands are proposed to be suitable to design sensors for cations as well as anions. Some of the complexes of anthracene-based ligands are reported to have potential for light-emitting devices. Various quantum chemical properties, dipole moments, bond lengths, charges, total electronic energies, the highest occupied and lowest unoccupied molecular orbital energies and the interfrontier molecular orbital energy gap values are obtained and compared. An empirical equation is derived for calculating the free formaldehyde concentration in alcohol-formaldehyde systems at various temperatures and total formaldehyde concentrations, as well as an equation for evaluating solvent concentrations. In the final study, the authors exploit the intense fluorescence behavior of luminol for a quantitative understanding of hydrogen bonding behavior and its interaction with several biological media, with the help of steady state and time-resolved measurements as well as density functional theory calculations.

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