Multilingual Aspects of Speech Sound Disorders in Children explores both multilingual and multicultural aspects of children with speech sound disorders. The 30 chapters have been written by 44 ...authors from 16 different countries about 112 languages and dialects. The book is designed to translate research into clinical practice. It is divided into three sections: (1) Foundations, (2) Multilingual speech acquisition, (3) Speech-language pathology practice. An introductory chapter discusses cross-linguistic and multilingual aspects of speech sound disorders in children. Subsequent chapters address speech sound acquisition, how the disorder manifests in different languages, cultural contexts, and speakers, and addresses diagnosis, assessment and intervention. The research chapters synthesize available research across a wide range of languages. A unique feature of this book are the chapters that translate research into clinical practice. These chapters provide real-life vignettes for specific geographical or linguistic contexts.
Using EPR and HYSCORE spectroscopies in conjunction with ab initio calculations, we assess the structure of framework-bound monomeric hydroxo-CuII in copper-loaded chabazite (CHA). The species is an ...interfacial distorted square-planar CuIIOH(O-8MRs)3 complex located at eight-membered-ring windows, displaying three coordinating bonds with zeolite lattice oxygens and the hydroxo ligand hydrogen-bonded to the cage. The complex has a distinctive EPR signature with g = 2.072 2.072 2.290, Cu A= 30 30 410 MHz, and H A = −13.0 −4.5 +11.5 MHz, distinctively different from other CuII species in CHA.
A dual catalytic
manifold that enables site-selective functionalization
of unactivated
sp
3
C–O
bonds in cyclic acetals with aryl and alkyl halides is reported. The
reaction is triggered by an ...appropriate σ*–p orbital
overlap prior to
sp
3
C–O
cleavage, thus highlighting the importance of conformational flexibility
in both reactivity and site selectivity. The protocol is characterized
by its excellent chemoselectivity profile, thus offering new vistas
for activating strong
σ sp
3
C–O linkages.
The absence of residual solvent in metal precursors can be of key importance for the successful preparation of metal complexes or materials. Herein, we describe methods for the quantitation of ...residual coordinated tetrahydrofuran (THF) that binds to FeN(SiMe3)22, a commonly used iron synthon, when prepared according to common literature procedures. A simple method for quantitation of the amount of residual coordinated THF using 1H NMR spectroscopy is highlighted. Finally, a detailed synthetic procedure is described for the synthesis of THF-free FeN(SiMe3)22.
The Sc2Ru compound, obtained by high-temperature synthesis, was found to crystallize in a new trigonal hP45 structure type space group P3̅m1; a = 9.3583(9) Å and c = 11.285(1) Å: Ru@Sc8 cubes, ...Ru@Sc12 icosahedra, and uncommon Ru@Sc10 sphenocoronae are the building blocks of a unique motif tiling the whole crystal space. According to density functional theory studies, Sc2Ru is a metallic compound characterized by multicenter interactions: a significant charge transfer occurs from Sc to Ru, indicating an unexpectedly strong ionic character of the interactions between the two transition metals. Energy calculations support our experimental results in terms of stability of this compound, contributing to the recurrent discussion on the limits of the high-throughput first-principles calculations for metallic materials design.
C–H bond activation at cationic (η5-C5Me5)Ir(PMe2Ar′) centers is described, where PMe2Ar′ are the terphenyl phosphine ligands PMe2ArXyl 2 and PMe2ArDipp 2. Different pathways are defined for the ...conversion of the five-coordinate complexes (η5-C5Me5)IrCl(PMe2Ar′)+, 2(Xyl)+ and 2(Dipp)+ , into the corresponding pseudoallyls 3(Xyl)+ and 3(Dipp)+ . In the absence of an external Brønsted base, electrophilic, remote ζ C–H activation takes place, for which the participation of dicationic species, (η5-C5Me5)Ir(PMe2Ar′)2+, is proposed. When NEt3 is present, the PMe2ArDipp 2 system is shown to proceed via 4(Dipp)+ as an intermediate en route to the thermodynamic, isomeric product 3(Dipp)+ . This complex interconversion involves a non-innocent C5Me5 ligand, which participates in C–H and C–C bond formation and cleavage. Remarkably, the conversion of 4(Dipp)+ to 3(Dipp)+ also proceeds in the solid state.
An enantiopure ligand with four bidentate metal-binding sites and four (S)-carbon stereocenters self-assembles with octahedral ZnII or CoII to produce O-symmetric M8L6 coordination cages. The Λ- or ...Δ-handedness of the metal centers forming the corners of these cages is determined by the solvent environment: the same (S)-ligand produces one diastereomer, (S)24-Λ8-M8L6, in acetonitrile but another with opposite metal-center handedness, (S)24-Δ8-M8L6, in nitromethane. Van ’t Hoff analysis revealed the Δ stereochemical configuration to be entropically favored but enthalpically disfavored, consistent with a loosening of the coordination sphere and an increase in conformational freedom following Λ-to-Δ transition. The binding of 4,4′-dipyridyl naphthalenediimide and tetrapyridyl Zn-porphyrin guests did not interfere with the solvent-driven stereoselectivity of self-assembly, suggesting applications where either a Λ- or Δ-handed framework may enable chiral separations or catalysis.
Network Routing: Algorithms, Protocols, and Architectures, Second Edition explores network routing and how it can be broadly categorized into Internet routing, PSTN routing, and telecommunication ...transport network routing. The book systematically considers these routing paradigms, as well as their interoperability, discussing how algorithms, protocols, analysis, and operational deployment impact these approaches and addressing both macro-state and micro-state in routing. Readers will learn about the evolution of network routing, the role of IP and E.164 addressing and traffic engineering in routing, the impact on router and switching architectures and their design, deployment of network routing protocols, and lessons learned from implementation and operational experience. Numerous real-world examples bring the material alive.
Bridges the gap between theory and practice in network routing, including the fine points of implementation and operational experienceRouting in a multitude of technologies discussed in practical detail, including, IP/MPLS, PSTN, and optical networkingPresents routing protocols such as OSPF, IS-IS, BGP in detailDetails various router and switch architecturesDiscusses algorithms on IP-lookup and packet classificationAccessible to a wide audience with a vendor-neutral approach
X-ray diffraction data demonstrate that the adduct formed upon the reaction of dirhodium(II,II) tetraacetate with RNase A reacts with imidazole, leading to the formation of an unexpected product ...with the imidazole that binds the dirhodium center at an equatorial site rather than an axial site. The origin of this result has been dissected using quantum-chemical calculations.
Dies ist ein Open-Access-Buch. Akteure und Fördergeber von Wissenschaftskommunikation beschäftigt zunehmend die Frage, welche Wirkungen von ihren Aktivitäten tatsächlich ausgehen und ob sie ihre ...Ziele damit eigentlich erreichen. Wer liest das Weblog eines Forschungsprojekts? Ändert der Besuch eines Science-Slams nachhaltig den Blick des Publikums auf Wissenschaft? Wie zufrieden sind die Beteiligten mit einer Diskussionsveranstaltung? Der Band bietet einen Überblick über wissenschaftliche Designs und Methoden zur Evaluation von Wissenschaftskommunikation. Er vereint dabei sowohl quantitative als auch qualitative Zugänge, Forschung und Praxis, und beleuchtet das Thema aus unterschiedlichen disziplinären Perspektiven.
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