Free radicals

Carotenoids are a group of 40-carbon isoprenoids with high lipid solubility, widely found in fruits, vegetables, etc. They have an unsaturated structure with strong antioxidant activity that helps prevent low-density lipoprotein oxidation and protect cells from free radicals.

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The purpose of this propensity score matching (PSM) analysis was to compare the effects of preoperative transcatheter arterial chemoembolization (TACE) and non-TACE on the long-term survival of patients who undergo radical hepatectomy.

12p vikoch 27-06-2024 1 1   Download

To evaluate the results of soft tissue defect treatment with ALT composite flaps in covering secondary soft tissue defects after radical tumors resection. Method: From October 2017 to April 2023, we performed a series of 10 single-stage surgeries using composite anterior lateral thigh flap to cover secondary tissue defects in 2 cases covered Achilles tendon defects and 8 cases covered secondary defects after resection of tumors.

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Part 2 book "Advanced organic chemistry" includes contents: Carbanions and other carbon nucleophiles; addition, condensation and substitution reactions of carbonyl compounds; aromaticity; aromatic substitution; concerted pericyclic reactions; free radical reactions; photochemistry.

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Isaria cicadae, currently identified as Paecilomyces cicadae (Miq.) Samson (Cordycipitaceae, Hypocreales, Ascomycetes), is a parasitic fungus on cicadas and is considered a folk medicine in traditional medicine. In this research, the antioxidant activity of some extracts from the biomass and fruit bodies of Isaria cicadae F0004 isolated in Vietnam was investigated.

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The results showed that the overall diffusioncontrolled rate constant is equal to 4.82×109 M-1 s -1 at 298.15K. The zwitterionic form is the main existing form that plays an essential role in the HO - initiated oxidation of Ile (99.98%). The most preponderant reactions are found at C6-H (36.19%) and C8-H (37.77%) positions. Finally, the influence of temperature on the overall rate is also evaluated.

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Ebook "Free-radical synthesis and functionalization of heterocycles" describes the recent developments in the free-radical mediated synthesis and elaboration of heterocycles. The first chapter, dealing with radical cascade processes illustrates the power and the beauty of radical chemistry with some striking examples of total synthesis of complex natural heterocycles. As organic chemists strive towards sustainability, radical chemistry has recently seen major advances and efforts in this direction, including C-H activation of arenes and unactivated alkyl groups.

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Ebook "Molecularly imprinted polymers in biotechnology" has stimulated the development of synthetic materials that can be designed to have tailor-made molecular selectivity. Molecular imprinting, a synthetic technique that uses molecular templates to create selective binding sites in cross-linked polymers, has become one of the most efficient methods for preparation of selective recognition materials.

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Ebook "Principles of polymer chemistry (Third edition)" undergoes a change of character in the third edition. Where earlier editions covered organic polymer chemistry, the third edition covers both physical and organic chemistry. Thus kinetics and thermodynamics of polymerization reactions are discussed. This textbook contains review questions at the end of every chapter, references for further reading, and numerous examples of commercially important processes.

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Ebook "EPR of free radicals in solids II: Trends in methods and applications (Second edition)" presents a critical two volume review of the methods and applications of EPR (ESR) for the study of free radical processes in solids. Emphasis is on the progress made in the developments in EPR technology, in the application of sophisticated matrix isolation techniques and in the advancement in quantitative EPR that have occurred since the 1st edition was published.

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Ebook "Radical polymerization: Kinetics and mechanism" from the successful Macromolecular Symposia series presents the contributions from the IUPAC-sponsored International Symposium on "Radical Polymerization: Kinetics and Mechanism", held in Il Ciocco, Italy, in September, 2006. This was the fourth within the series of so-called SML conferences, which are the major scientific forum for addressing kinetic and mechanistic aspects of free-radical polymerization and controlled radical polymerization.

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Ebook "Handbook of radical polymerization" aims to capture the explosion of progress made in free radical polymerization in the past 15 years. Conventional radical polymerization (RP) and living radical polymerization (LRP) mechanisms receive extensive coverage together with all the other important methods of controlling aspects of radical polymerization.

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Ebook "Free radicals in organic synthesis (Reactivity and structure concepts in organic chemistry, Volume 7)" has a comparatively long history. Before the accep- tance of the quadrivalence of carbon, various attempts were made to prepare trivalent carbon species like methyl and ethyl. Initial investigations involving reaction between alkyl iodides and zinc were thought to be successful but were subsequently branded as failures 2.

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Ebook "Electron paramagnetic resonance (Volume 21)" highlights major developments in this area, with results being set into the context of earlier work and presented as a set of critical yet coherent overviews. The topics covered describe contrasting types of application, ranging from biological areas such as EPR studies of free-radical reactions in biology and medically-related systems, to experimental developments and applications involving EPR imaging, the use of very high fields, and time-resolved methods.

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Ebook "Handbook of RAFT polymerization" spanning the entire field from fundamentals to applications in material science, this one-stop source is the first comprehensive reference for polymer, physical and surface chemists, materials scientists, chemical engineers, and those chemists working in industry.

555p coduathanh1122 27-03-2024 2 1   Download

Part 2 book "Engineering of polymers and chemical complexity ( Vol 1 - Current state of the art and perspectives)" includes content: CNT/polymer nanocomposites - A detailed review on mathematical modeling and experimental case studies; orientation controlled immobilization strategy for B galactosidase on alginatebeads; preparation, characterization, and evaluation of waterswellable hydrogel via grafting cross linked polyacrylamide chains onto gelatin backbone by free radical polymerization,...and other contents.

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Part 1 book "Chemical engineering of polymers - Production of functional and flexible materials" includes content: Copolymerization of aniline P-phenylenediamine in an acetic acid medium; free radical frontal polymerization of acrylamide in the presence of nano and micro additives; influence of ph on the structuring of zetag 9014® type of cationic polymers; aromatic azides and pentazenes in multistep radical polymerization; synthesis and adsorption properties of 4 aminostyrene and methacrylic acid copolymer, immobilized in situ on silica surface;... and other contents.

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Ebook "Studies on women’s health (Oxidative stress in applied basic research and clinical practice series)" covers data describing the role of free radicals and antioxidants that deal with clinical and pre-clinical trials, as well as basic research in the area of women's health. There is increasing evidence that oxidative stress is a causative, or at least a supporting factor in female pathology and infertility. During advancing gestational age, oxidative stress biomakers rise.

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Part 1 book "Brocklehurst’s textbook of geriatric medicine and gerontology" includes content: Introduction, the epidemiology of aging, the future of old age, successful aging, evolution theory and the mechanisms of aging, methodologic challenges of research in older people, geroscience, genetic mechanisms of aging, cellular mechanisms of aging, the premature aging syndrome, the neurobiology of aging - free radical stress and metabolic pathways, allostasis and allostatic overload in the context of aging, neuroendocrinology of aging,... and other contents.

365p muasambanhan08 23-02-2024 5 1   Download

Ebook "Studies on arthritis and joint disorders" will also provide specific coverage on emerging technology and medical applications including discussions of biomarkers and antioxidants as therapeutic agents and several more relevant aspects. In addition, the book will promote the concept of using biomarkers representative of oxidative stress reactions and free radical damage , as well as describe the effect of antioxidants in treating disease in clinical trials.

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