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Mortality is high among severe patients with 2019 novel coronavirus‐infected disease (COVID‐19). Early prediction of progression to severe cases is needed. We retrospectively collected patients with COVID‐19 in two hospital of Chongqing from 1st January to 29th February 2020. At admission, we collected the demographics and laboratory tests to predict whether the patient would progress to severe cases...
We present a comprehensive photonic approach for passive cooling of solar cells by simultaneously performing radiative cooling while also selectively utilizing the sunlight. We design a photonic cooler made of multilayer dielectric stack that can strongly radiate heat through its thermal radiation while also significantly reflecting the solar spectrum in sub-band gap and ultraviolet regime. We show...
We demonstrate radiative cooling of solar absorbers with utilization of sunlight. By placing a visibly-transparent thermal blackbody atop the absorber, we cool the absorber by 13°C, while preserving or even slightly enhancing sunlight absorption.
We introduce general principles for maximally violating detailed balance in thermal radiation. We validate these principles by direct calculations, based on fluctuational electrodynamics, on thermal emitters constructed from magneto-optical photonic crystals.
We present the first experimental demonstration near-field radiative heat transfer using silicon carbide. We achieve a 11 Ox near-field enhancement, relative to the far-field limit, of the radiative heat transfer between integrated nanostructures.
We demonstrate near-field radiative heat transfer between nanostructures and show that it dominates over other on-chip conduction channels. The measured heat transfer behavior matches the predictions of boundary element method simulations for parallel nanobeams.
We introduce a general approach to radiatively lower the temperature of a structure, while preserving its color under sunlight. The cooling persists in the presence of considerable non-radiative heat exchange, and for different solar absorptances.
Near-field electromagnetic heat transfer is of interest for a variety of applications, including energy conversion, and precision heating, cooling and imaging of nano-structures. This past decade has seen considerable progress in the study of near-field electromagnetic heat transfer, but it is only very recently that numerically exact methods have been developed for treating near-field heat transfer...
We propose a temporal coupled mode theory for thermal emission from a single emitter. We validate the coupled mode theory formalism by a direct numerical simulation of the emission properties of single emitters.
Objective This study aims to assess retrospectively the imaging features of computed tomography (CT) and clinical characteristics of epidermoid cyst in intrapancreatic accessory spleen (ECIPAS). Methods Seven consecutive patients with pathologically confirmed ECIPAS were included. CT images and clinical data were analyzed. The CT features emphasized included the location, size, calcification, cystic...
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