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  • 1
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-05
    Description: The lifestyle of humans is rapidly changing, and, correspondingly, their needs and the current and future megatrends of the food market. It is worth mentioning (1) the preference for natural, simple, and flexible diets that drive the further expansion of plant-focused formulations, (2) the focus on food sustainability (food waste reduction), and (3) the interest in healthy eating as the basis for good health. The hectic routine and rapid urbanization in developed and developing regions, respectively, have shifted consumer preferences toward bread and baked foods, which, interestingly, are often high in sugars and are categorized as having a high glycemic index. Therefore, it is of major importance to address the technological challenges of manufacturing baked goods with high physical and sensory quality that result in positive metabolic responses. This Special Issue seeks to provide fundamental understanding in this area and novel strategies to improve the nutritional properties of baked goods, including a decrease in starch bioaccessibility, sugar reduction, increase in fiber and/or protein content, and the improvement of phytochemical bioactivity. This Special Issue will also cover studies on the physical and sensory improvements of baked goods that may provide a mechanistic understanding to minimize the loss of quality after the incorporation of nutritional-improving ingredients, such as edible byproducts, proteins, or fibers. Last but not least, studies focused on the reduction of additives (clean label) or fat and on the use of sourdough to improve the sensory properties of baked goods will also be included.
    Keywords: QH301-705.5 ; Q1-390 ; TX341-641 ; particle size ; n/a ; tempering ; maize bread ; pea ; bakery products ; antinutritional factors ; nutrition knowledge ; baking ; chia ; analytical quality ; antioxidant capacity ; protein enrichment ; mucilage ; cookie ; bakery ; cereals ; sustainability ; amylopectin ; germination ; functional foods ; maize flour ; sensory QDA ; shortening ; upcycled food by-products ; pulses ; processing ; fermentation ; sesame ; glycemic response ; sieve ; flaxseed ; Mixolab ; bio-technological processing ; ?-amylase ; TPA ; high-amylose ; baking activity ; defatted sunflower seed flour ; gluten-free ; wheat–flaxseed composite ; protein digestibility ; bran ; pseudocereals ; legume fortification ; digestion ; flour refinement ; consumer ; milk lipids ; bread ; biscuits ; air classification ; faba bean ; whole grains ; retrogradation ; intermediate wheatgrass ; lentil ; sunflower ; chickpea ; colour ; protein content ; sensory evaluation ; valorisation ; amylose ; fat replacer ; fortification ; principal component analysis ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences
    Language: English
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  • 2
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Polymerisation des 2-Vinyl-1.3-dioxolans mit radikalischen, anionischen und kationischen Katalysatoren im Bereich von -80 bis +40°C wurde untersucht. Die Polymerisation mit radikalischen Initiatoren verläuft ausschließlich über die Vinyldoppelbindung. Mit Butyllithium trat nur Gasentwicklung ohne Polymerbildung ein. Die Polymerisation mit BF3·O(C2H5)2 ergab lineare oder vernetzte Polymere je nach Art des verwendeten Lösungsmittels und der Polymerisationstemperatur. Ansätze, bei denen lösliche Polymere entstehen, polymerisieren durch Vinyl-Vinyl-Addition (60-65%) und Ringöffnung (35 bis 40%); bei der Ringöffnung entstehen durch Hydrid-Verschiebung 3-10% Estergruppen, während der Rest eine normale Ringöffung des Dioxolans ist. Die Polymerisation in Aceton ergibt ein festes, lineares Polymeres mit einem Erweichungspunkt bei ca. 120°C.2-Methyl-2-vinyl-1.3-dioxolan wurde synthetisiert und mit anionischen, kationischen und radikalischen Katalysatoren polymerisiert. Die Polymerisation durch BF3·O(C2H5)2 verläuft viel langsamer als im Fall des oben erwähnten Dioxolans; alle in homogener Phase erhaltenen Polymeren sind löslich, unabhängig vom Lösungsmittel. Gleichzeitig wurde die Bildung von Estergruppen beobachtet. Diese Feststellung scheint auf eine Isomerisierung durch Verschiebung einer Methylgruppe hinzuweisen.Eine Erklärung der Ringöffnung bei diesem 2-substituierten Dioxolan wird gegeben.
    Notes: The polymerization of 2-vinyl-1.3-dioxolane was examined with radical, anionic and cationic catalysts in the range from -80 to +40°C. The polymerization with radical initiators occurs exclusively through the vinyl double bond. With butyl lithium, a gas evolution takes place without polymer formation. The polymerization with BF3·OEt2 gave linear or cross-linked polymers according to the type of solvent and polymerization temperature used. The runs giving soluble polymers are the result of vinyl-vinyl addition (60-65%) and ring opening (35-40%); when ring opening takes place, 3-10% ester groups are formed due to hydride shift, while the remainder is produced by normal opening of the dioxolane cycle. Polymerization in acetone gave solid, linear polymers with a softening point of about 120°C.2-Methyl-2-vinyl-1.3-dioxolane was synthesized and polymerized with radical, anionic and cationic catalysts. Unlike the dioxolane mentioned above the polymerization with BF3·OEt2 occurs at much slower rates, and all polymers obtained in homogeneous phase are soluble, independent of the solvent used. At the same time, the formation of ester groups has been observed. This fact seems to indicate the existence of an isomerization due to a shift of a methyl group.An explanation of the cleavage of the dioxolane ring in these derivatives with the substituent in position 2 is given.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2024-03-29
    Description: La presente antología contiene un amplio conjunto de textos que Fernando Martínez Heredia elaboró en función de los problemas sociales y retos que la práctica política socialista latinoamericana demandó al pensamiento con el objetivo de ir más allá de lo posible. Materiales vivos que nos incitan a pensar en tiempo de revolución para que, según dijera un humilde habanero que entregó su vida a esa empresa, los sueños de hoy se conviertan en la ley del mañana.
    Keywords: Political Science ; History ; Latin American Studies ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPF Political ideologies and movements::JPFC Far-left political ideologies and movements ; thema EDItEUR::N History and Archaeology::NH History::NHK History of the Americas ; thema EDItEUR::N History and Archaeology::NH History::NHT History: specific events and topics::NHTQ Colonialism and imperialism
    Language: Spanish
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  • 4
    Publication Date: 2024-04-05
    Description: The brain of each animal shows specific traits that reflect its phylogenetic history and its particular lifestyle. Therefore, comparing brains is not just a mere intellectual exercise, but it helps understanding how the brain allows adaptive behavioural strategies to face an ever-changing world and how this complex organ has evolved during phylogeny, giving rise to complex mental processes in humans and other animals. These questions attracted scientists since the times of Santiago Ramon y Cajal one of the founders of comparative neurobiology. In the last decade, this discipline has undergone a true revolution due to the analysis of expression patterns of morphogenetic genes in embryos of different animals. The papers of this e-book are good examples of modern comparative neurobiology, which mainly focuses on the following four Grand Questions: a) How are different brains built during ontogeny? b) What is the anatomical organization of mature brains and how can they be compared? c) How do brains work to accomplish their function of ensuring survival and, ultimately, reproductive success? d) How have brains evolved during phylogeny? The title of this e-book, Adaptive Function and Brain Evolution, stresses the importance of comparative studies to understand brain function and, the reverse, of considering brain function to properly understand brain evolution. These issues should be taken into account when using animals in the research of mental function and dysfunction, and are fundamental to understand the origins of the human mind.
    Keywords: RC321-571 ; Q1-390 ; comparative neurobiology ; brain evolution ; phylogeny ; ontogeny ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
    Language: English
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  • 5
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    Frontiers Media SA
    Publication Date: 2024-04-05
    Description: Could we understand, in biological terms, the unique and fantastic capabilities of the human brain to both create and enjoy art? In the past decade neuroscience has made a huge leap in developing experimental techniques as well as theoretical frameworks for studying emergent properties following the activity of large neuronal networks. These methods, including MEG, fMRI, sophisticated data analysis approaches and behavioral methods, are increasingly being used in many labs worldwide, with the goal to explore brain mechanisms corresponding to the artistic experience. The 37 articles composing this unique Frontiers Research Topic bring together experimental and theoretical research, linking state-of-the-art knowledge about the brain with the phenomena of Art. It covers a broad scope of topics, contributed by world-renowned experts in vision, audition, somato-sensation, movement, and cinema. Importantly, as we felt that a dialog among artists and scientists is essential and fruitful, we invited a few artists to contribute their insights, as well as their art. Joan Miró said that “art is the search for the alphabet of the mind.” This volume reflects the state of the art search to understand neurobiological alphabet of the Arts. We hope that the wide range of articles in this volume will be highly attractive to brain researchers, artists and the community at large.
    Keywords: RC321-571 ; Q1-390 ; emotion ; neuroesthetics ; performing-arts ; creativity ; perception ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
    Language: English
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  • 6
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    Universidad Carlos III de Madrid. Figuerola Institute of Social Science History
    Publication Date: 2022-01-31
    Description: El libro consta de dos partes claramente delimitadas: una dedicada a los libros de texto y otra a los planes de estudio. En la primera se aborda la utilización que los liberales hicieron de los manuales para conseguir la unidad que tanto ansiaban: establecieron un sistema de listas de libros que aprobaba el gobierno y que estuvo vigente en buena parte del siglo XIX. El estudio del sistema, la publicación de las listas y la reconstrucción de la biblioteca escolar constituye ocupan las páginas de esta parte. En la segunda se editan los planes de estudios jurídicos que existieron en los siglos XIX y XX, se analiza la evolución de los mismos y se ensaya una tipología que permita su comprensión.
    Keywords: AS1-945 ; DP1-402 ; Derecho ; Enseñanza ; Law ; Education ; Historia ; History
    Language: Spanish
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  • 7
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-05
    Description: The future of the precious metals is shiny and resistant. Although expensive and potentially replaceable by transition metal catalysts, precious metal implementation in research and industry shows potential. These metals catalyze oxidation and hydrogenation due to their dissociative behavior toward hydrogen and oxygen, dehydrogenation, isomerization, and aromatization, etc. The precious metal catalysts, especially platinum-based catalysts, are involved in a variety of industrial processes. Examples include Pt–Rh gauze for nitric acid production, the Pt/Al2O3 catalyst for cyclohexane and propylene production, and Pd/Al2O3 catalysts for petrochemical hydropurification reactions, etc. A quick search of the number of published articles in the last five years containing a combination of corresponding “metals” (Pt, Pd, Ru, Rh and Au) and “catalysts” as keywords indicates the importance of the Pt catalysts, but also the continuous increase in the contribution of Pd and Au. This Special Issue reveals the importance of precious metals in catalysis and focuses on mono- and bi-metallic formulations of any supported precious metals and their promotional catalytic effect of other transition metals. The application of precious metals in diverse reactions, either homogeneous or heterogeneous, and studies of the preparation, characterization, and applications of the supported precious metal catalysts, are presented.
    Keywords: QD1-999 ; QD146-197 ; Q1-390 ; sustainable ammonia synthesis ; Pt3Sn alloy ; alkenols ; n/a ; PtSn alloy ; propane dehydrogenation ; chelate ; photodegradation ; gold nanoparticles ; photochemical ; alkynols ; triple bond electron charge ; palladium catalyst ; Pt/Al2O3 ; 2-methyl-3-butyn-2-ol ; hydrogen storage ; X-ray crystallography ; ruthenium ; platinum dispersion ; gold catalysts ; reduction temperature ; DOC ; palladium ; renewable hydrogen ; 1-propanol ; 4-hydroxyproline ; glycerol ; 2-?-benzylproline ; proline ; hydrogen bonding ; oxidative coupling ; glucose oxidation ; stabilizing agent ; titania ; 4-fluoroproline ; turnover frequency ; porous carbons ; Pt–Sn/Al2O3 ; P25@Pd ; catalyst synthesis ; 2-propanol ; amino acid ; azetidine ; precious metals ; clay ; gas phase hydrogenation ; CNTs ; 3-butyn-2-ol ; Pd/Al2O3 ; heterogeneous enantioselective hydrogenation ; XPS ; microwave ; caesium ; perovskite ; CO oxidation ; Au–TiO2 ; dodecahydro-N-ethylcarbazole ; phenol photo-degradation ; pipecolinic acid ; 3-butyn-1-ol ; acetophenone ; drying ; palladium catalysts ; N-methylproline ; dehydrogenation ; PVA ; aging ; hydrodechlorination ; hydrogenolysis ; dispersion ; direct reduction ; core-shell ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: English
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  • 8
    Publication Date: 2024-04-05
    Description: In the mid-sixties, the discovery by Altman and co-workers of neurogenesis in the adult brain changed the previous conception of the immutability of this organ during adulthood sustained among others by Cajal. This discovery was ignored up to eighty’s when Nottebohm demonstrated neurogenesis in birds. Subsequently, two main neurogenic zones were characterized: the subventricular zone of the lateral ventricle and the subgranular layer of the dentate gyrus. Half century later, the exact role of new neurons in the adult brain is not completely understand. This book is composed by a number of articles by leaders in the filed covering from an historic perspective to potential therapeutic opportunities.
    Keywords: RC321-571 ; Q1-390 ; Stroke ; Dopamine ; Exercise ; Epilepsy ; Alzheimer ; glia ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
    Language: English
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  • 9
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-05
    Description: The emergence of marine and freshwater toxins in geographical areas where they have never been reported before is a concern due to the considerable impact on (sea)food contamination, and consequently, on public health. Several groups of marine biotoxins, in particular tetrodotoxins, ciguatoxins, and palytoxins, are included among the relevant marine biotoxins that have recently emerged in several coastal areas. A similar situation has been observed in freshwater, where cyanobacterial toxins, such as microcystins, could end up in unexpected areas such as the estuaries where shellfish are cultivated. Climate change and the increased availability of nutrients have been considered as the key factors in the expansion of all of these toxins into new areas; however, this could also be due to more intense biological invasions, more sensitive analytical methods, or perhaps even an increased scientific interest in these natural contaminations. The incidences of human intoxications due to the consumption of seafood contaminated with these toxins have made their study an important task to accomplish in order to protect human health. This Special Issue has a focus on a wide variety of emerging biotoxin classes and techniques to identify and quantify them.
    Keywords: QH301-705.5 ; Q1-390 ; n/a ; C-CTX-1 ; non-targeted analysis ; ciguatera fish poisoning ; suspects screening ; neurodegeneration ; adaptation ; LC-HRMS ; paralytic shellfish toxins ; LC-MS/MS ; animal toxins ; identification ; method characterization ; caribbean ciguatoxins ; oral toxicity ; water flea ; quorum sensing ; eutrophication ; beta-methyl-amino-l-alanine ; dynamics simulation ; thermal water ; spent medium ; Microcystis ; Gambierdiscus ; gambierdiscus ; whole genome sequencing ; palytoxin ; conotoxin ; ovatoxins ; cyanobacterial toxin ; BMAA ; Ciguatera fish poisoning ; Rastrineobola argentea ; calcium-activated K+ ion channel ; toxicity equivalence factor ; NMR spectroscopy ; N2a ; PPIA ; marine biotoxins ; Daphnia magna ; ELISA ; disulfide-rich peptide ; food chain ; ShK-like peptide ; voltage-gated K+ ion channel ; targeted analysis ; Chinese yellow catfish ; marine ; macaronesia ; neuroblastoma bioassay ; marine toxins ; acute toxicity ; algal–bacterial relationship ; mass spectrometry ; tetrodotoxins ; saxitoxin ; toxicology ; cationization ; seafood safety ; evolution ; cyanotoxins ; toxin genes ; zoantharian ; spatial variability ; dopaminergic neurons ; tetrodotoxin ; bivalve mollusks ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences
    Language: English
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  • 10
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-05
    Description: The characterization of peptides and proteins is central to understanding their function and expression in biological matrices. Moreover, these macromolecules are important biomarkers of many human diseases. In recent years, the performance of separation techniques based on electromigration have significantly increased. The development of microdevices has reduced sample consumption and waste production while high-sensitivity detectors, such as mass spectrometry (MS) or laser-induced fluorescence (LIF), have significantly improved with regards to separation efficiency and detection limits. All of these advancements have led to appreciably enlarged fields of application. Nowadays, a multitude of studies using separation techniques based on electromigration to study proteins and peptides from numerous real matrices are available in the literature. This Special Issue covers the most recent knowledge and advances in the study of peptides and proteins using several electrophoresis techniques, as well as the characterization of relevant proteins and peptides in application areas such as clinical studies, functional foods, and toxicology.
    Keywords: QD1-999 ; Q1-390 ; QD450-801 ; seed phosphoproteomics ; LC-ESI-MS ; purity ; transferrin ; CE-LIF ; enzyme assay ; thioglucosidase ; capillary electrophoresis ; venom composition ; immunoassay ; fluorescence ; seed proteomics ; SEC-HPLC ; desulfo-sinigrin ; metalloproteins ; seed quality traits ; seed glycoproteomics ; proteomics ; sulfatase ; on-gel detection ; non-covalent binding ; Naja ashei ; myrosinase ; SDS-PAGE ; carbon dots ; 2-D electrophoresis ; fragment ; rhIL-12 ; seed molecular breeding ; chip-based CE-LIF assay ; thema EDItEUR::P Mathematics and Science::PN Chemistry
    Language: English
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