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  • Analytical Chemistry and Spectroscopy  (25,033)
  • crystal structure
  • evolution
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  • 11
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-01-08
    Description: From a biological perspective, the subterranean realm is one of the less studied, but at the same time, one of the most promising, theatres for new findings and research. Compared to those on the surface, the ecological conditions occurring in subterranean habitats are relatively simple, and this may be an optimal scenario for understanding the mechanisms allowing the colonization, adaptation, and evolution of species, as well as their interactions within local communities. Diversity in subterranean habitats is often overlooked, and few studies embrace whole communities or try to assess functional relationships between species. This Special Issue reprint comprises papers covering a wide range of aspects related to the distribution, composition, and roles of subterranean communities occurring in different typologies of subterranean habitats.
    Keywords: cave biology ; subterranean habitats ; vertebrates ; invertebrates ; community dynamics ; biospeleology ; hypogean ; conservation ; biodiversity ; troglobite ; troglophile ; trogloxene ; extreme environment ; niche ; epikarst ; classification trees ; Copepoda ; random forests ; Diptera ; Limonia ; Limonia nubeculosa ; Neolimonia ; Trichoceridea ; cave community ; prey ; food resources ; occupancy ; abundance ; Astyanax ; Spelaeomysis ; Troglomexicanus ; Speocirolana ; Toro cave ; Sierra de El Abra ; troglomorphy ; stygobite ; fieldwork ; wild fish ; comparative biology ; behavior ; troglomorphism ; olfactory test ; infrared movies ; amino acids ; chondroitin ; plasticity ; cybernetics ; ecology ; cavefish ; dissolved oxygen ; cave evolution ; Astyanax mexicanus ; Ostracoda ; Yucatán Peninsula ; cenotes ; mitochondrial marker ; geometric morphometrics ; population ecology ; growth ; movements ; São Domingos karst area ; subterranean fishes ; evolution ; origin of troglobites ; Brazil ; subterranean biology ; environmental science ; biogeography ; distribution records ; groundwater ; underwater caves ; cenote ; mysid ; stygobiont ; bioindicator ; accidental cave visitors ; Arachnida ; Araneae ; arid ; levant ; Mediterranean ; species diversity ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences::PSV Zoology & animal sciences
    Language: English
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  • 12
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-04-05
    Description: The major histocompatibility complex (MHC) is a highly polymorphic and diverse multigene locus in all jawed vertebrate species that has an integral role in adaptive/innate immune systems, transplantation, and infectious and autoimmune diseases. The MHC supra-locus in mammalian vertebrates is usually partitioned into three distinct regions, known as classes I, II, and III, which, to varying extents, can be found conserved in nonmammalian jawed vertebrates, such as bony fish, amphibians, and bird lineages. The MHC gene region is characterized particularly by the expression of class I and class II glycoproteins that bind peptides derived from intracellular or extracellular antigens to circulating T-cells. While this expressed antigenic specificity remains the predominant interest with respect to MHC function and polymorphism in a population, a broader concept has emerged that examines the MHC as a multifunctional polymorphic controller that facilitates and regulates genome diversity with a much greater array of functions and effects than just MHC-restricted antigen recognition. This volume of 19 reprints presented by various experts and collected from the Special Issue of Cells on “MHC in Health and Disease” covers a broad range of topics on the genomic diversity of the MHC regulatory system in various vertebrate species, including MHC class I, II, and III genes; innate and adaptive immunity; neurology; transplantation; haplotypes; infectious and autoimmune diseases; fecundity; conservation; allelic lineages; and evolution. Taken together, these articles demonstrate the immense complexity and diversity of the MHC structure and function within and between different vertebrate species.
    Keywords: QH301-705.5 ; Q1-390 ; HCP5 ; n/a ; camels ; MHC ; STK19 ; major histocompatibility complex ; human papillomavirus (HPV) ; T-cell receptor ; T1DGC ; bottleneck ; micro-mini-pigs ; life history ; computational analysis ; hepatocellular carcinoma ; phase ; Bactrian camel ; NSDK ; melanoma ; antigen ; autoimmune disease ; RD ; selection ; disease resistance ; autoimmunity ; ancestral haplotype ; Ski complex ; DXO ; high-throughput sequencing ; conservation genetics ; SVA ; lncRNA ; ankylosing spondylitis ; MHC genes ; viral peptides ; competing endogenous RNA (ceRNA) ; astrogliosis ; birds ; long-fragment super haplotype ; SNP ; RLR ; HLA polymorphism ; 5??3? RNA decay ; expression ; 3??5? mRNA turnover ; orthology ; long-read sequencing ; disease association ; dromedary ; polyomavirus ; MHC-II-associated sperm-egg recognition ; experimental medicine ; single nucleotide polymorphism (SNP) ; fish ; SKIV2L ; production trait ; molecular dynamics simulation ; Macaca fascicularis ; human endogenous retrovirus (HERV) ; concerted evolution ; polymorphism ; Old World camels ; MHC polymorphism ; protocol ; nonclassical ; gene duplication ; microglial reaction ; human leukocyte antigen-E ; SKI2W ; quantitative trait loci (QTL) studies ; antiviral immunity ; human immunodeficiency virus (HIV) ; founder effect ; giant panda ; domain movements ; BK virus ; promoter-proximal transcriptional pause ; type 1 diabetes (T1D) ; RP1 ; miR1236 ; KIR ; synaptic covering ; swine leukocyte antigen ; cynomolgus macaque ; HLA ; kidney transplantation ; ?2m knockout mice ; DOM3Z ; interferon ? ; ethnic populations in China ; ecology ; KIR–HLA pairs ; exosomes ; major histocompatibility complex (MHC) ; MHC-I-based mother-fetus recognition ; RNA quality control ; autoimmune diseases ; NELF-E ; haplotype ; genetic drift ; evolution ; nonhuman primate models ; HLA-B27 ; PNS/CNS interface ; risk genes ; pedigree ; MHC-I- and MHC-II-dependent inter-individual recognition ; regulation ; crested ibis ; reproductive performance ; nephropathy ; cancer ; nuclear kinase ; trichohepatoenteric syndrome ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences
    Language: English
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  • 13
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-28
    Description: Multicomponent pharmaceutical materials are solids in which at least one component is an active pharmaceutical ingredient (API). This kind of pharmaceutical solid has attracted interest in the past decade as a promising alternative to the laborious and expensive process of traditional pipeline drug development. The application of crystal engineering techniques into the design of pharmaceutical salts, co-crystals, and other multicomponent materials, in addition to the achievement of more environmentally friendly synthetic approaches, has succeeded in modulating the physicochemical, mechanical, and pharmacokinetic properties of drugs, thereby working toward the enhancement of their clinical performance. This Special Issue welcomed original research articles and reviews devoted to all aspects related to the field of multicomponent pharmaceutical solids. Our interests include the fundamentals of applied research, using theoretical and experimental approaches, the development of synthetic methods, the screening of multicomponent materials, structure–activity rationale, the salt–co-crystal continuum identification, the enhancement in physicochemical/mechanical/pharmacokinetic performance, as well as the functionality and applications of multicomponent pharmaceuticals solids.
    Keywords: solvate ; polymorph ; bilastine ; crystal structure determination ; single crystal X-ray diffraction ; structure determination from powder diffraction ; aripiprazole ; multicomponent crystal ; crystal structure ; solubility ; drug–drug cocrystal ; furosemide ; ethenzamide ; piroxicam ; mechanochemical synthesis ; amorphous drug ; characterization methods ; crystallization ; physical stability ; molecular mobility ; aminoglutethimide ; eutectic mixture ; melt phase diagram ; nucleobases ; multicomponent solids ; crystal engineering ; DFT ; H-bonding ; pyridinecarboxamides ; cocrystals ; mandelic acid ; X-ray structure ; DFT calculations ; xanthines ; theophylline ; squaric acid ; controlled release ; dissolution ; lidocaine ; mechanochemistry ; multicomponent materials ; API ; pharmaceutical solids ; diclofenac ; pharmaceutical solid forms ; n/a ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 14
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2023-08-08
    Description: This reprint of the Special Issue "Advances in Plant Taxonomy and Systematics", includes an Editorial and fifteen high-quality papers published between April 2022 and April 2023 by global researchers. This collection addresses scholars and students interested in current progresses in taxonomy and systematics, which are crucial for all plant applications.
    Keywords: alpine species ; chromosome number ; Irano-Turanian region ; biogeography ; rapid radiation ; Veronica ; endemism ; morphometrics ; image analysis ; molecular analysis ; niche similarity ; nomenclature ; Magnoliaceae ; chloroplast genome ; phylogenomics ; intergeneric relationship ; Crassula ; Crassulaceae ; plastome ; codon usage ; codon aversion ; DNA barcoding ; evolutionary rates ; phylogeny ; Adonanthe ; molecular phylogeny ; taxonomy ; steppic plant ; demographic systematics ; ethology ; evolution ; natural selection ; next-generation sequencing ; ordination ; reproductive isolation ; sexual deceit ; speciation ; species circumscription ; Astragalus subgenus Hypoglottis ; Leguminosae ; Iran ; rapid diversification ; section Hypoglottidei ; section Stereothrix ; Australia ; carnivorous plants ; non-core Caryophyllales ; Nepenthales ; sundews ; typification ; Adelieae ; Argythamnia ; Caperonia ; Caperonieae ; Chiropetalum ; Ditaxeae ; Ditaxis ; phylogenetics ; Philyra ; Arecaceae ; Bentinckia ; biogeographic analysis ; karyomorphology ; Asteraceae ; ecology ; ddRADseq ; geography ; leaf morphology ; polyploidy ; chromosome numbers ; Crocus heuffelianus group ; Crocus series Verni ; dysploidy ; genome size ; genotyping-by-sequencing (GBS) ; morphometry ; apomixis ; hybridisation ; multiple origins ; Sorbus austriaca ; genomics ; geometric morphometrics ; Ranunculus auricomus ; taxonomically complex groups (TCGs) ; arid lands ; Cactaceae ; colonization ; Mammillaria ; Mexican Plateau ; Miocene ; Pleistocene ; recent diversification ; n/a ; bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences::PST Botany & plant sciences
    Language: English
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  • 15
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2024-03-27
    Description: The present volume “New Trends in Lithium Niobate: From Bulk to Nanocrystals” contains the materials of a Special Issue of the MDPI journal Crystals dedicated to the memory of Prof. Dr. Ortwin F. Schirmer and provides a new synopsis of his research focusing on LiNbO3. It also includes recent developments, exemplifying the continued interest in this outstanding ferroelectric, non-linear optical and holographic crystal as a workhorse for testing and realizing new ideas and applications.This book starts with reviews on intrinsic and extrinsic crystal defects in LiNbO3 of single-crystal, thin-film or nano-powder forms, studied by various optical, magnetic resonance and nuclear methods, clarifying in particular the reasons for the suppression of anion vacancy formation upon thermal reduction, mechano-chemical processing or irradiations of various types. The reviews are followed by research papers on the experimental and theoretical investigation of small polarons, together with recent results on the properties of Li(Nb,Ta)O3 mixed crystals. Among the various contributions dealing with nonlinear optical applications, papers on device development, entangled photon pair generation and thin films on the Lithium Niobate On Insulator (LNOI) platform can also be found.
    Keywords: lithium niobate ; small polaron hopping ; transient absorption ; mode-locked laser ; nonlinear mirror mode locking ; lithium tantalate ; crystal structure ; chemical composition ; ferroelectrics ; second harmonic generation ; lead-free piezoelectrics ; intrinsic defects ; extrinsic defects ; elemental doping ; ferromagnetism ; diluted-magnetic oxides ; LiNbO3 ; LiTaO3 ; oxide crystals ; lanthanides ; luminescence ; LNOI ; ferroelectric domains ; domain-wall conduction ; AFM ; thin film lithium niobate ; TFLN ; x-cut LN ; domain walls ; piezoresponse force microscopy ; second-harmonic generation ; Raman scattering ; electro-optics ; whispering gallery resonators ; polarons ; photorefractivity ; Marcus-Holstein’s theory ; Monte Carlo simulations ; strontium titanate ; self-trapped electrons ; oxygen vacancies ; defects ; impurity ; intrinsic defect ; paramagnetic ion ; electron paramagnetic resonance ; electron nuclear double resonance ; lithium vacancy ; lithium ; niobate ; epitaxy ; thin film ; liquid phase epitaxy ; molecular beam epitaxy ; sputtering ; pulsed laser deposition ; chemical vapor deposition ; lithium niobate-tantalate ; piezoelectric ; acoustic ; high-temperature ; sensor ; Q-factor ; BAW resonator ; parametric down-conversion ; photon-pair generation ; extended phase matching ; microring resonator ; varFDTD ; lithium tantalate thin film ; electro-optical devices ; lattice location ; radiation damage ; ion beam analysis ; hyperfine interactions ; charge localization ; lattice deformation ; optical response ; density-functional theory ; Bethe-Salpeter equation ; nanoparticles ; nanopowders ; X-ray diffraction ; Raman spectroscopy ; temperature dependence of electroconductivity ; bipolarons ; defect structure and generation ; Li diffusion ; bulk crystals ; thin films ; nanocrystals ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general
    Language: English
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  • 16
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    Taylor & Francis
    Publication Date: 2024-04-04
    Description: Human social life is constrained and defined by our cognitive and emotional dispositions, which are the legacy of our foraging ancestors. But how difficult is it to reconstruct the social systems and cultural traditions of those ancestors? The Archaeology of Human Ancestry provides a stimulating and provocative answer, in which archaeologists and biological anthropologists set out and demonstrate their reconstructive methods. Contributors use observations of primates and modern hunter-gatherers to illuminate the fossil and artefactual records. Thematic treatment covers the evolution of group size; group composition and the emotional structure of social bonds; sexual dimorphism and the sexual division of labour; and the origins of human cultural traditions. The Archaeology of Human Ancestry is an essential introduction to the subject for advanced undergraduates and researchers in archaeology and biological anthropology. It will also be used by workers in psychology, sociology and feminist studies as a resource for understanding human social origins.
    Keywords: homo ; erectus ; hominid ; evolution ; archaeological ; record ; early ; reproductive ; success ; modern ; thema EDItEUR::N History and Archaeology::NK Archaeology
    Language: English
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  • 17
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-02-01
    Description: In higher mammals, including primates and carnivores, the asymmetrical aspects of brain morphology and function have been shown to be species-related, sex-related, and subject to individual diversity, and are associated with cognition, emotion, language, preference of hand/paw use, and numerous other aspects. Disturbance of the brain lateralization is involved in human neurodevelopmental disorders with cognitive impairments, social deficits, and/or specific language impairments. Asymmetric development may be essential to the evolution of the brain in acquiring higher and/or more diverse functions. The purpose of this Special Issue on “Brain Asymmetry in Evolution” is to highlight morphological and functional lateralization of the brain in various species of mammals toward understanding the evolution of the brain.
    Keywords: oxyhemoglobin level ; state anxiety ; task performance ; heart rate ; human ; asymmetry ; sex difference ; MRI ; volumetry ; cerebellum ; ferret ; lateralization ; side bias ; fish ; methodological artefacts ; symmetry ; non-human primate ; Old World monkey ; evolution ; evolutionary expansion ; gyrification ; structural asymmetry ; language laterality ; topological data analysis ; persistent homology ; bic Book Industry Communication::M Medicine ; bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
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  • 18
    Publication Date: 2024-04-05
    Description: Supernumerary B chromosomes (Bs) are dispensable genetic elements found in thousands of species of plants and animals, and some fungi. Since their discovery more than a century ago, they have been a source of puzzlement, as they only occur in some members of a population and are absent from others. When they do occur, they are often harmful, and in the absence of “selfishness”, based on mechanisms of mitotic and meiotic drive, there appears to be no obvious reason for their existence. Cytogeneticists have long wrestled with questions about the biological existence of these enigmatic elements, including their lack of any adaptive properties, apparent absence of functional genes, their origin, sequence organization, and co-evolution as nuclear parasites. Emerging new technologies are now enabling researchers to step up a gear, to look enthusiastically beyond the previous limits of the horizon, and to uncover the secrets of these “silent” chromosomes. This book provides a comprehensive guide to theoretical advancements in the field of B chromosome research in both animal and plant systems.
    Keywords: QH301-705.5 ; Q1-390 ; parent-of-origin effects ; fluorescent in situ hybridization ; coverage ratio analysis ; n/a ; ribosomal DNA ; reactivation ; cytogenetics ; epigenetics ; heterochromatin ; interphase nucleus ; whole genome resequencing ; transmission ; grasshoppers ; genome instability ; dot-like (micro) Bs ; ?s ; B chromosome ; supernumerary elements ; transcription of heterochromatin ; maternal X chromosome ; supernumerary chromosome ; population analysis ; supernumerary ; repeat clusters ; extra chromosomes ; genes ; tandem repeats ; B morphotypes ; repetitive DNA ; repetitive elements ; DNA copy number variation ; chromosome polymorphism ; satellite DNA ; mammals ; maize B chromosome ; additional chromosomes ; inactivation ; drive ; B chromosomes ; FISH (fluorescence in situ hybridisation) ; organelle DNA ; Orthoptera ; origin ; supernumerary chromosomes ; karyotype evolution ; GISH (genomic in situ hybridisation) ; DNA composition ; de novo centromere formation ; genomics ; paternal X chromosome ; euchromatin degradation ; supernumerary chromosomal segments (SCS) evolution ; centromere ; sSMC ; Prospero autumnale complex ; next-generation sequencing ; Drosophila ; host/parasite interaction ; Apodemus peninsulae ; genome evolution ; evolution ; teleost ; chromosome evolution ; microdissected DNA probes ; controlling element ; mobile element ; RNA-Seq ; karyotypes ; karyotypic characteristics ; RepeatExplorer ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences
    Language: English
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  • 19
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    Goldsmiths Press | Goldsmiths Press
    Publication Date: 2024-04-03
    Description: A visually striking intercultural exploration of the use of mobile phones in Aboriginal communities in Australia. Yuta is the Yolngu word for new. Phone & Spear: A Yuta Anthropology is a project inspired by the gloriously cheeky and deeply meaningful audiovisual media made with and circulated by mobile phones by an extended Aboriginal family in northern Australia. Building on a ten-year collaboration by the community-based arts collective Miyarrka Media, the project is an experiment in the anthropology of co-creation. It is a multivoiced portrait of an Indigenous society using mobile phones inventively to affirm connections to kin and country amid the difficult and often devastating circumstances of contemporary remote Aboriginal life. But this is not simply a book about Aboriginal art, mobile phones, and social renewal. If old anthropology understood its task as revealing one world to another, yuta anthropology is concerned with bringing different worlds into relationship. Following Yolngu social aesthetics—or what Miyarrka Media translate as “the law of feeling”—the book is a relational technology in its own right: an object that combines color, pattern, and story to bring once distant worlds into new sensuously mediated connections.
    Keywords: anthropology ; sociology ; cultural anthropology ; evolution ; sociology books ; historical nonfiction ; human evolution ; science books ; anthropology books ; history ; history books ; science ; social engineering ; homosapiens ; human evolution books ; culture ; language ; linguistics ; 21st century ; eastern europe ; how to ; food ; society ; philosophy ; psychology ; england ; race ; design ; cultural studies ; school ; education ; happiness ; social science ; reference ; music ; world history ; languages ; pop culture ; nature ; essays ; identity ; geography ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHM Anthropology ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBC Cultural and media studies::JBCC Cultural studies ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBF Social and ethical issues::JBFV Ethical issues and debates ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues
    Language: English
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  • 20
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    Springer Nature | Springer International Publishing
    Publication Date: 2024-04-05
    Description: This open access book covers a century of research on wheat genetics and evolution, starting with the discovery in 1918 of the accurate number of chromosomes in wheat. We re-evaluate classical studies that are pillars of the current knowledge considering recent genomic data in the wheat group comprising 31 species from the genera Amblyopyrum, Aegilops, Triticum, and other more distant relatives. For these species, we describe morphology, ecogeographical distribution, phylogeny as well as cytogenetic and genomic features. For crops, we also address evolution under human selection, namely pre-domestication cultivation and domestication. We re-examine the genetic and archeological evidence of where, when, and how domestication occurred. We discuss unique aspects of genome evolution and maintenance under polyploidization, in natural and synthetic allopolyploids of the wheat group. Finally, we propose some thoughts on the future prospects of wheat improvement. As such, it can be of great interest to wheat researchers and breeders as well as to plant scientists and students interested in plant genetics, evolution, domestication, and polyploidy.
    Keywords: Wheat ; Triticeae ; cytogenetics ; polyploidy ; genomics ; phylogenetics ; domestication ; evolution ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PST Botany and plant sciences ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TV Agriculture and farming::TVB Agricultural science ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAK Genetics (non-medical)
    Language: English
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