559 research outputs found

    Study of state-accredited junior high schools in Montana

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    Determination of changes in pebble sphericity and roundness in a downstream direction in Clear Creek, Fairfield -- Hocking Counties, Ohio

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    Evaluation of the data obtained is used to show the relationships between roundness and sphericity of pebbles and the distance downstream these pebbles were collected, with lithology of the pebbles and glacial boundaries crossed by the stream taken into account. Evaluations are based on data taken from sixteen locations on Clear Creek and one location on the Hocking River in Fairfield-Hocking Counties, Ohio.No embarg

    Atomic layer deposition of titanium nitride for quantum circuits

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    Superconducting thin films with high intrinsic kinetic inductance are of great importance for photon detectors, achieving strong coupling in hybrid systems, and protected qubits. We report on the performance of titanium nitride resonators, patterned on thin films (9-110 nm) grown by atomic layer deposition, with sheet inductances of up to 234 pH/square. For films thicker than 14 nm, quality factors measured in the quantum regime range from 0.4 to 1.0 million and are likely limited by dielectric two-level systems. Additionally, we show characteristic impedances up to 28 kOhm, with no significant degradation of the internal quality factor as the impedance increases. These high impedances correspond to an increased single photon coupling strength of 24 times compared to a 50 Ohm resonator, transformative for hybrid quantum systems and quantum sensing.Comment: 10 pages, 8 figures including supplemental material

    Quantum Fields on the Groenewold-Moyal Plane

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    We give an introductory review of quantum physics on the noncommutative spacetime called the Groenewold-Moyal plane. Basic ideas like star products, twisted statistics, second quantized fields and discrete symmetries are discussed. We also outline some of the recent developments in these fields and mention where one can search for experimental signals.Comment: 50 pages, 3 figures. v2: published versio

    Magnetic resonance imaging correlates of neuro-axonal pathology in the MS spinal cord.

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    In people with multiple sclerosis (MS), the spinal cord is the structure most commonly affected by clinically detectable pathology at presentation, and a key part of the central nervous system involved in chronic disease deterioration. Indices, such as the spinal cord cross-sectional area at the level C2 have been developed as tools to predict future disability, and-by inference-axonal loss. However, this and other histo-pathological correlates of spinal cord magnetic resonance imaging (MRI) changes in MS remain incompletely understood. In recent years, there has been a surge of interest in developing quantitative MRI tools to measure specific tissue features, including axonal density, myelin content, neurite density, and orientation, among others, with an emphasis on the spinal cord. Quantitative MRI techniques including T1 and T2 , magnetization transfer and a number of diffusion-derived indices have all been applied to MS spinal cord. Particularly diffusion-based MRI techniques combined with microscopic resolution achievable using high magnetic field scanners enable a new level of anatomical detail and quantification of indices that are clinically meaningful.Barts Charity (grants # 468/1506 & G‐001109

    eManual Alte Geschichte: Quellenband: Adoptivkaiser

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