Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
15,252
result(s) for
"Stuart, C"
Sort by:
Path-integral approximations to quantum dynamics
Imaginary-time path-integral or ‘ring-polymer’ methods have been used to simulate quantum (Boltzmann) statistical properties since the 1980s. This article reviews the more recent extension of such methods to simulate quantum dynamics, summarising the chain of approximations that links practical path-integral methods, such as centroid molecular dynamics (CMD) and ring-polymer molecular dynamics (RPMD), to the exact quantum Kubo time-correlation function. We focus on single-surface Born–Oppenheimer dynamics, using the infrared spectrum of water as an illustrative example, but also survey other recent applications and practical techniques, as well as the limitations of current methods and their scope for future development.
Graphic abstract
Journal Article
New insights in polydopamine formation via surface adsorption
Polydopamine is a biomimetic self-adherent polymer, which can be easily deposited on a wide variety of materials. Despite the rapidly increasing interest in polydopamine-based coatings, the polymerization mechanism and the key intermediate species formed during the deposition process are still controversial. Herein, we report a systematic investigation of polydopamine formation on halloysite nanotubes; the negative charge and high surface area of halloysite nanotubes favour the capture of intermediates that are involved in polydopamine formation and decelerate the kinetics of the process, to unravel the various polymerization steps. Data from X-ray photoelectron and solid-state nuclear magnetic resonance spectroscopies demonstrate that in the initial stage of polydopamine deposition, oxidative coupling reaction of the dopaminechrome molecules is the main reaction pathway that leads to formation of polycatecholamine oligomers as an intermediate and the post cyclization of the linear oligomers occurs subsequently. Furthermore, TRIS molecules are incorporated into the initially formed oligomers.
Polydopamine is a biomimetic self-adherent polymer, which can be easily deposited on a wide variety of materials but the polymerization mechanism and the key intermediate species formed during the deposition process are still controversial. Here, the authors report a systematic investigation of polydopamine formation on halloysite nanotubes.
Journal Article
Greener, Faster, Stronger: The Benefits of Deep Eutectic Solvents in Polymer and Materials Science
Deep eutectic solvents (DESs) represent an emergent class of green designer solvents that find numerous applications in different aspects of chemical synthesis. A particularly appealing aspect of DES systems is their simplicity of preparation, combined with inexpensive, readily available starting materials to yield solvents with appealing properties (negligible volatility, non-flammability and high solvation capacity). In the context of polymer science, DES systems not only offer an appealing route towards replacing hazardous volatile organic solvents (VOCs), but can serve multiple roles including those of solvent, monomer and templating agent—so called “polymerizable eutectics.” In this review, we look at DES systems and polymerizable eutectics and their application in polymer materials synthesis, including various mechanisms of polymer formation, hydrogel design, porous monoliths, and molecularly imprinted polymers. We provide a comparative study of these systems alongside traditional synthetic approaches, highlighting not only the benefit of replacing VOCs from the perspective of environmental sustainability, but also the materials advantage with respect to mechanical and thermal properties of the polymers formed.
Journal Article
Historical dictionary of Leibniz's philosophy
\"Historical Dictionary of Leibniz's Philosophy, Second Edition contains a chronology, an introduction, and an extensive bibliography. The dictionary section has more than 500 cross-referenced entries on Leibniz's philosophy, written work, teachers, contemporaries, and philosophers influenced by him\"-- Provided by publisher.
BOOK
Single-cell transcriptional profiles in human skeletal muscle
Skeletal muscle is a heterogeneous tissue comprised of muscle fiber and mononuclear cell types that, in addition to movement, influences immunity, metabolism and cognition. We investigated the gene expression patterns of skeletal muscle cells using RNA-seq of subtype-pooled single human muscle fibers and single cell RNA-seq of mononuclear cells from human vastus lateralis, mouse quadriceps, and mouse diaphragm. We identified 11 human skeletal muscle mononuclear cell types, including two fibro-adipogenic progenitor (FAP) cell subtypes. The human FBN1+ FAP cell subtype is novel and a corresponding FBN1+ FAP cell type was also found in single cell RNA-seq analysis in mouse. Transcriptome exercise studies using bulk tissue analysis do not resolve changes in individual cell-type proportion or gene expression. The cell-type gene signatures provide the means to use computational methods to identify cell-type level changes in bulk studies. As an example, we analyzed public transcriptome data from an exercise training study and revealed significant changes in specific mononuclear cell-type proportions related to age, sex, acute exercise and training. Our single-cell expression map of skeletal muscle cell types will further the understanding of the diverse effects of exercise and the pathophysiology of muscle disease.
Journal Article
Processing and application of high-temperature superconducting coated conductors
Coated conductors formed from the high-temperature superconducting (HTS) material REBCO (REBa
2
Cu
3
O
7−δ
) enable energy-efficient and high-power-density delivery of electricity, making them key materials for clean energy generation, conversion, transmission and storage. Widespread application of HTS coated conductor wires requires operation at high temperatures in wide-ranging magnetic fields, as well as low-cost processing. In this Review, we investigate different processing methods and applications of HTS coated conductors, highlighting advances in laboratory-scale conductor processing and performance, and examining commercial potential. We discuss how the nanostructure of the HTS material impacts wire performance across different application regimes, and how the nanostructure and performance are related to the inherent supersaturation levels of the respective processing method. We outline approaches to decrease wire cost and improve wire performance in the critical application regime (20–40 K, >1 T magnetic field), and examine emerging and potential future applications of HTS coated conductors.
High-temperature superconducting materials are finding their way into numerous energy applications. This Review discusses processing methods for the fabrication of REBCO (REBa
2
Cu
3
O
7−δ
) coated conductors, investigating the relation between performance and fabrication method, reviewing existing and new routes to improved performance and outlining emerging and future applications.
Journal Article