The large screen system for grid dispatching is an important part of dispatching center,and nowadays traditional mosaic type has been replaced by DLP projection technology.Since DLP technology has the advantages of gorgeous colors,lifelike images and easy to modify,it can have a chance to be among large screen area,and actually it has started to shown a stronger superiority and taken the lead in the area.In this paper,the application of DLP technology in the large screen system for prefecture-level city's gird dispatching is systematically presented.
The linearized approximation to the semiclassical initial value representation (LSC-IVR) has been used together with the thermal Gaussian approximation (TGA) (TGA/LSC-IVR) [J. Liu and W. H. Miller, J. Chem. Phys. 125, 224104 (2006)] to simulate quantum dynamical effects in realistic models of two condensed phase systems. This represents the first study of dynamical properties of the Ne(13) Lennard-Jones cluster in its liquid-solid phase transition region (temperature from 4 to 14 K). Calculation of the force autocorrelation function shows considerable differences from that given by classical mechanics, namely that the cluster is much more mobile (liquidlike) than in the classical case. Liquid para-hydrogen at two thermodynamic state points (25 and 14 K under nearly zero external pressure) has also been studied. The momentum autocorrelation function obtained from the TGA/LSC-IVR approach shows very good agreement with recent accurate path integral Monte Carlo results at 25 K [A. Nakayama and N. Makri, J. Chem. Phys. 125, 024503 (2006)]. The self-diffusion constants calculated by the TGA/LSC-IVR are in reasonable agreement with those from experiment and from other theoretical calculations. These applications demonstrate the TGA/LSC-IVR to be a practical and versatile method for quantum dynamics simulations of condensed phase systems.
With the development of global navigation satellite system (GNSS),maritime search and rescue vessels can get their location exactly.So,it is possible to locate the shipwreck through a known reference point.The application of base station position technology to determine the ship in distress will greatly enhance the effectiveness of maritime search and rescue.After analyzing the maturation of the base station location algorithm,and testing its accuracy in the laboratory environment and under actual GSM network,the 1/N TA technology and the U-TDOA technology are selected for single vessel positioning and for multi-vessel portfolio positioning separately,which greatly improves the positioning accuracy of search and rescue.The application of cheap and popular mobile phone positioning provides a new consideration of location,which is a difficult problem in maritime search and rescue.
Background Exercise rehabilitation is conducive to increasing functional ability and improving health outcomes, but its effectiveness in patients with acute heart failure (AHF) is still controversial. Purpose In this study, our aim was to systematically examine the efficacy of exercise rehabilitation in people with AHF. Methods A search was conducted for randomized controlled trial studies on exercise rehabilitation in patients with AHF up to November 2021. Two investigators conducted literature selection, quality assessments, and data extractions independently. The primary outcome was 6-minute walk distance, and the secondary outcomes were left ventricular ejection fraction, quality of life, Short Physical Performance Battery, readmission, and mortality. RevMan (version 5.3) software was used for the meta-analysis. Results Twelve studies with 1215 participants were included. Exercise rehabilitation significantly improved the 6-minute walk distance (mean difference [MD], 33.04; 95% confidence interval [CI], 31.37–34.70; P < .001; I 2 = 0%), quality of life (MD, −11.57; 95% CI, −19.25 to −3.89; P = .003; I 2 = 98%), Short Physical Performance Battery (MD, 1.40; 95% CI, 1.36–1.44; P < .001; I 2 = 0%), and rate of readmission for any cause (risk ratio, 0.48; 95% CI, 0.26–0.88; P = .02; I 2 = 7%), compared with routine care. However, no statistically significant effects on left ventricular ejection fraction (MD, 0.94; 95% CI, −1.62 to 3.51; P = .47; I 2 = 0%) and mortality (risk ratio, 1.07; 95% CI, 0.64–1.80; P = .79; I 2 = 0%) were observed. Conclusions Compared with routine care, exercise rehabilitation improved functional ability and quality of life, reducing readmission in patients with AHF.
Abstract A glassy carbon electrode coated the film of 4‐tert‐butyl‐1‐(ethoxycarbonylmethoxy)thiacalix[4]arene is designed for the determination of trace amounts of Hg 2+ . Compared with bare glassy carbon electrode, the modified electrode can improve the measuring sensitivity of Hg 2+ . Under the optimum experimental condition, the modified electrode in 0.1 mol L −1 H 2 SO 4 + 0.01 mol L −1 KCl solution shows a linear voltammetric response in the range of 8.0 × 10 −9 ∼ 3.0 × 10 −6 mol L −1 with detection limit 5.0 × 10 −9 mol L −1 for Hg 2+ . The high sensitivity, selectivity, and stability of modified electrode also prove its practical application for a simple, rapid and economical determination of Hg 2+ in water samples.
We present energy-resolved angular distributions of photoelectrons generated in above-threshold ionization (ATI) of nonaligned diatomic molecules N2 and O2 in high-intensity short laser pulses, with emphasis on the most energetic part of the spectra. The angular distribution for photoelectrons with energy of 10U(p) (U(p): ponderomotive energy), i.e., the plateau cutoff in ATI spectra, is found to be broader in O2 than in N2. Resorting to the analyses from both an S-matrix theory and an intuitive semiclassical model, we attribute the observation to the effect of the ground state molecular orbital structure on high-energy electron emission in strong-field molecular ionization.
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