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Koolstof is zo'n gewoon en vertrouwd element dat je haast zou vergeten hoe bijzonder het is. We eten het dagelijks, ademen het uit en voeren het aan de auto, de planten en de huisdieren. Als onderdeel van DNA bepaalt het onze eigenschappen. We kunnen ermee lezen en schrijven, als het ware. Maar waarom koolstof? Er zijn meer dan honderd elementen bekend. Koolstof is niet het lichtste, zwaarste of meest vervloedige op aarde of in het universum. Eerder een middenmoter. Het kan een binding aangaan met vier buren, maar ook daarin is het niet uniek. Het bestaat in diverse vormen, waarvan grafiet en diamant de bekendste zijn. Maar ook andere elementen hebben verschillende verschijningsvormen. Wel vormt koolstof de grootste verscheidenheid aan moleculen in combinatie met andere elementen, van heel kleine zoals koolstofmonoxide tot enorm grote zoals DNA en andere polymeren. Er zijn miljoenen koolstofverbindingen bekend, waarvan het overgrote deel organisch is. Cruciaal voor het vormen van deze complexe bindingen is de manier waarop de elektronen de kern van een oolstofatoom omringen. Het resultaat is bijvoorbeeld een bijzonder materiaal als grafeen, een plat molecuul van slechts één atoom dik. Theoretici geloofden dat grafeen niet in werkelijkheid kon estaan, maar twee Russische onderzoekers bewezen het tegendeel onder andere op hun lab in Nijmegen. Ze wonnen er in 2010 de Nobelprijs mee.
Chemistry --- polymeren --- C (koolstof)
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Olefin Upgrading Catalysis by Nitrogen-based Metal Complexes II: State of the art and Perspectives provides a critical review of the state-of-the-art developments in industrially relevant processes connected to efficient and selective olefin upgrading. Specific attention is devoted to catalysts containing imine- and amine-based ligands. All the chapters in this book have been designed to provide a systematic account of the vast amount of information available for this type of catalyst as well as to highlight the factors that ultimately control the catalyst's performance and productivity. A comprehensive panorama of catalyst precursors is presented, spanning from group 10 a-diimine complexes and iron and cobalt 2,6-bis(imino)pyridine derivatives, to vanadium, chromium, titanium, zirconium and lanthanide complexes supported by nitrogen-containing ligands. The authors of this collective work are currently involved in the development of imine-based catalysts for efficient and selective olefin upgrading and the majority of them have dedicated most of their scientific career to this important field. In writing this book, their major goal is to transfer as many ideas and experiences as possible to the global audience of scientists engaged in this area of research.
Macromolecules --- Organic chemistry --- katalysatoren --- organische chemie --- polymeren
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Macromolecules --- Organic chemistry --- katalysatoren --- organische chemie --- polymeren
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Didactics of higher education --- Biotechnology --- laboratoriumpraxis --- biotechnologie --- polymeren
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Biopolymers. --- Bioactive polymers --- Biological polymers --- Natural polymers --- Naturally occurring polymers --- Biomolecules --- Polymers --- Biopolymers --- biopolymeren --- polymeren
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This reference, in its second edition, contains more than 7,500 polymeric material terms, including the names of chemicals, processes, formulae, and analytical methods that are used frequently in the polymer and engineering fields. In view of the evolving partnership between physical and life sciences, this title includes an appendix of biochemical and microbiological terms (thus offering previously unpublished material, distinct from all competitors.) Each succinct entry offers a broadly accessible definition as well as cross-references to related terms. Where appropriate to enhance clarity further, the volume's definitions may also offer equations, chemical structures, and other figures. The new interactive software facilitates easy access to a large database of chemical structures (2D/3D-view), audio files for pronunciation, polymer science equations and many more.
Physicochemistry --- Macromolecules --- Organic chemistry --- Materials sciences --- Engineering sciences. Technology --- tribologie --- materiaalkennis --- organische chemie --- polymeren --- fysicochemie --- corrosie
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The development and application of bioactive nano-structured constructs for tissue regeneration is the focus of the research summarised in this thesis. Moreover, a particular focus is the rational use of supercritical carbon dioxide foaming and electrospinning technologies which can lead to innovative polymeric bioresorbable scaffolds made of hydrolysable (both commercial and ad-hoc' synthesized) polyesters. Mainly, the author discusses the manipulation of polymer chemical structure and composition to tune scaffold physical properties, and optimization of scaffold 3D architecture by a smart use of both fabrication techniques. The multidisciplinary nature of this research is imperative in pursuing the challenge of tissue regeneration successfully. One of the strengths of this thesis is the integration of knowledge from chemistry, physics, engineering, materials science and biomedical science which has contributed to setting up new national and international collaborations, while strengthening existing ones.
Macromolecules --- General biophysics --- Human biochemistry --- biologische materialen --- medische biochemie --- biochemie --- polymeren --- moleculaire biologie
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Macromolecules --- Organic chemistry --- General biochemistry --- carbonzuren --- organische chemie --- biochemie --- polymeren --- moleculaire biologie
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Chitin, Chitosan and Derivatives for Wound Healing and Tissue Engineering, by Antonio Francesko and Tzanko Tzanov; *Polyhydroxyalkanoates (PHA) and their Applications, by Guo-Qiang Chen; *Enzymatic Polymer Functionalisation: Advances in Laccase and Peroxidase Derived Lignocellulose Functional Polymers, by Gibson S. Nyanhongo, Tukayi Kudanga, Endry Nugroho Prasetyo and Georg M. Guebitz; *Lipases in Polymer Chemistry, by Bahar Yeniad, Hemantkumar Naik and Andreas Heise; *Enzymes for the Biofunctionalization of Poly(Ethylene Terephthalate), by Wolfgang Zimmermann and Susan Billig; *Biology of Human Hair: Know Your Hair to Control It, by Rita Araújo, Margarida Fernandes, Artur Cavaco-Paulo and Andreia Gomes; *Recombinamers: Combining Molecular Complexity with Diverse Bioactivities for Advanced Biomedical and Biotechnological Applications, by José Carlos Rodríguez-Cabello, María Pierna, Alicia Fernández-Colino, Carmen García-Arévalo and Francisco Javier Arias; *Biomimetic Materials for Medical Application Through Enzymatic Modification, by Piergiorgio Gentile, Valeria Chiono, Chiara Tonda-Turo, Susanna Sartori and Gianluca Ciardelli; *Supramolecular Polymers Based on Cyclodextrins for Drug and Gene Carrier Delivery, by Jia Jing Li, Feng Zhao and Jun Li; *Engineering Liposomes and Nanoparticles for Biological Targeting, by Rasmus I. Jølck, Lise N. Feldborg, Simon Andersen, S. Moein Moghimi and Thomas L. Andresen
Macromolecules --- General biophysics --- Semiology. Diagnosis. Symptomatology --- Biotechnology --- biologische materialen --- cholesterol --- biotechnologie --- polymeren --- moleculaire biologie
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