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The square root of summer
Gottie Oppenheimer, a seventeen-year-old physics prodigy, navigates grief, love, and disruptions in the space-time continuum in one very eventful summer.
BOOK
Ab Initio Thermodynamics and First-Principles Microkinetics for Surface Catalysis
Ab initio thermodynamics and first-principles microkinetic simulations have become standard tools in research on model catalysts. Complementing dedicated in situ experiments these techniques contribute to our evolving mechanistic understanding, in particular of a reaction-induced dynamical evolution of the working catalyst surface. This topical review surveys the methodological foundations and ongoing developments of both techniques, and specifically illustrates the type of insights they provide in the context of in situ model catalyst studies. This insight points at substantial deviations from the standard picture that analyzes catalytic function merely in terms of properties of and processes at active sites as they emerge from a crystal lattice truncation of the nominal catalyst bulk material.
Graphical Abstract
Journal Article
The origins of dominant parties : building authoritarian institutions in post-soviet Russia
\"In many autocracies, regime leaders share power with a ruling party, which can help generate popular support and reduce conflict among key elites. Such ruling parties are often called dominant parties. In other regimes, leaders prefer to rule solely through some combination of charisma, patronage, and coercion, rather than sharing power with a dominant party. This book explains why dominant parties emerge in some nondemocratic regimes, but not in others. It offers a novel theory of dominant party emergence that centers on the balance of power between rulers and other elites. Drawing on extensive fieldwork in Russia, original data on Russian political elites, and cross-national statistical analysis, the book's findings shed new light on how modern autocracies work and why they break down. The book also provides new insights about the foundations of Vladimir Putin's regime and challenges several myths about the personalization of power under Putin\"-- Provided by publisher.
Book
Mixed Halide Isothiocyanate Tin(II) Compounds, SnHal(NCS): Signs of Tetrel Bonds as Bifurcated Extensions of Long-Range Asymmetric 3c-4e Bonds
As part of a systematic study on the structures of the mixed halide isothiocyanates, SnIIHal(NCS), their single crystals were grown and structurally characterized. For Hal = F (1), the SnClF structure type was confirmed, while with Hal = Cl (2), Br (3), and I (4), there are three isostructural compounds of a new structure type, and for Hal = Cl (5), there is a second modification of a third structure type. These structure types have been described with respect to the composition and coordination geometry of the first, second, and van der Waals crust coordination spheres and their dependence on the halogen size and thiocyanate binding modes. With respect to the first coordination spheres, all three structure types constitute one-dimensional coordination polymers. In 1, “ladder”-type double chains result from μ3-bridging fluorine atoms, and in 2–4, single-chains built up from μ2-halogen atoms are pairwise “zipper”-like interconnected via κ2NS-bridging NCS ligands, which manage the halogen-linked chain assembly in the double chains of 5. Based on the octet rule, short atom distances are interpreted in terms of 2c-2e and various (symmetrical, quasi-symmetrical, and asymmetrical) kinds of 3c-4e bonds. Weak contacts, the topology of which suggests the extension of the latter bonding concept, are identified as electron-deficient, bifurcated tetrel bonds.
Journal Article
How to be luminous
\"Minnie Sloe and her sisters have weathered it all together--growing up without fathers, living an eccentric lifestyle with a pet rabbit named Salvador Dali, and riding out their famous artist mother's mental highs and lows. But then their mother disappears, and Minnie, who was supposed to follow in her footsteps, starts seeing the world in monochrome. Literally. How can she create when all she sees is black-and-white? As grief threatens to tear the three sisters apart, Minnie fears she could lose everything: her family, her future, her first love ... and maybe even her mind.\"--Provided by publisher.
Book
RNAstructure: software for RNA secondary structure prediction and analysis
Background
To understand an RNA sequence's mechanism of action, the structure must be known. Furthermore, target RNA structure is an important consideration in the design of small interfering RNAs and antisense DNA oligonucleotides. RNA secondary structure prediction, using thermodynamics, can be used to develop hypotheses about the structure of an RNA sequence.
Results
RNAstructure is a software package for RNA secondary structure prediction and analysis. It uses thermodynamics and utilizes the most recent set of nearest neighbor parameters from the Turner group. It includes methods for secondary structure prediction (using several algorithms), prediction of base pair probabilities, bimolecular structure prediction, and prediction of a structure common to two sequences. This contribution describes new extensions to the package, including a library of C++ classes for incorporation into other programs, a user-friendly graphical user interface written in JAVA, and new Unix-style text interfaces. The original graphical user interface for Microsoft Windows is still maintained.
Conclusion
The extensions to RNAstructure serve to make RNA secondary structure prediction user-friendly. The package is available for download from the Mathews lab homepage at
http://rna.urmc.rochester.edu/RNAstructure.html
.
Journal Article
Mixed Halide Isothiocyanate Tin: Signs of Tetrel Bonds as Bifurcated Extensions of Long-Range Asymmetric 3c-4e Bonds
As part of a systematic study on the structures of the mixed halide isothiocyanates, Sn[sup.II]Hal(NCS), their single crystals were grown and structurally characterized. For Hal = F (1), the SnClF structure type was confirmed, while with Hal = Cl (2), Br (3), and I (4), there are three isostructural compounds of a new structure type, and for Hal = Cl (5), there is a second modification of a third structure type. These structure types have been described with respect to the composition and coordination geometry of the first, second, and van der Waals crust coordination spheres and their dependence on the halogen size and thiocyanate binding modes. With respect to the first coordination spheres, all three structure types constitute one-dimensional coordination polymers. In 1, “ladder”-type double chains result from μ[sub.3]-bridging fluorine atoms, and in 2–4, single-chains built up from μ[sub.2]-halogen atoms are pairwise “zipper”-like interconnected via κ [sup.2] NS-bridging NCS ligands, which manage the halogen-linked chain assembly in the double chains of 5. Based on the octet rule, short atom distances are interpreted in terms of 2c-2e and various (symmetrical, quasi-symmetrical, and asymmetrical) kinds of 3c-4e bonds. Weak contacts, the topology of which suggests the extension of the latter bonding concept, are identified as electron-deficient, bifurcated tetrel bonds.
Journal Article
A Controlled Trial of Erenumab for Episodic Migraine
The monoclonal antibody against CGRP receptor, erenumab, administered subcutaneously once a month, significantly reduced migraine frequency by approximately 2 days per month and reduced the effects of migraine on daily functioning.
Journal Article