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Pediatric inhalation injury

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Burns & Trauma 2017年第4期5卷 237-242页

作者： Soman sen Division of Burn Surgery Department of Surgery University of California Davis Shriners Hospital for Children Northern California Sacramento USA

Smoke inhalation injury can cause severe physiologic perturbations. In pediatric patients, these perturbations cause profound changes in cardiac and pulmonary physiology. In this review, we examine the pathology, early management options, ventilator strategy, and long-term outcomes in pediatric patients who have suffered a smoke inhalation injury.

关键词： Inhalation injury Children Ventilator management Smoke inhalation Carbon monoxide

Photo-catalytic decolourisation of toxic dye with N-doped titania:A case study with Acid Blue 25

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Journal of Environmental Sciences 2013年第5期25卷 1034-1043页

作者： Dhruba Chakrabortty Susmita sen Gupta Department of Chemistry B N CollegeDhubriAssamIndia

Dyes are one of the hazardous water *** Acid Blue 25,an anthraquinonic dye,has been decolourised by photo-catalysing it with nitrogen doped titania in aqueous *** photo catalyst was prepared from 15% TiCl 3 and 25% aqueous NH 3 solution as *** and TEM revealed the formation of well crystalline anatase phase having particle size in the *** surface area of the sample was higher than that of pure anatase TiO *** showed higher absorption of radiation in visible range compared to pure anatase TiO *** revealed the presence of nitrogen in N-Ti-O *** experimental parameters,namely,photocatalyst dose,initial dye concentration as well as solution pH influence the decolourisation *** pH 3.0,the N-TiO 2 could decolourise almost 100% Acid Blue 25 within one *** influence of N-TiO 2 dose,initial concentration of Acid Blue 25 and solution pH on adsorption-desorption equilibrium is also *** adsorption process follows Lagergren first order kinetic

关键词： Acid Blue 25 decolourisation nitrogen-doped titania photocatalysis

Visuospatial Memory Alteration in Alzheimer’s Disease

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Neuroscience Bulletin 2020年第8期36卷 829-830页

作者： sen Lin Department of Ophthalmology Daping HospitalArmy Medical Center of the People's Liberation ArmyArmy Medical UniversityChongqing 400042China

Although the treatment and drug discovery for Alzheimer’s disease (AD) are limited and some have failed recently,the search for potential biomarkers and early predictors *** is not only characterized by the decline o... 详细信息

关键词： Alzheimer impairment treatment

Controlling Chaos in a Semiconductor Laser via Weak Optical Positive Feedback and Modulating Amplitude

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Communications in Theoretical Physics 2007年第3期47卷 491-494页

作者： YAN sen-Lin Physical Department Nanjing Xiaozhuang College Nanjing 210017 China

Numerical analysis of weak optical positive feedback （OPF） controlling chaos is studied in a semiconductor laser. The physical model of controlling chaos produced via modulating the current of semiconductor laser is presented under the condition of OPF. We find the physical mechanism that the nonlinear gain coefficient and linewidth enhance- ment factor of the laser are affected by OPF so that the dynamical behaviour of the system can be efficiently controlled. Chaos is controlled into a single-periodic state, a dual-periodic state, a tri-periodic state, a quadr-periodic state, a pentaperiodic state, and the laser emitting powers are increased by OPF in simulations. Lastly, another chaos-control method with modulating the amplitude of the feedback light is presented and numerically simulated to control chaotic laser into multi-periodic states.

关键词： chaos control positive feedback period

Sulfide-driven nitrous oxide recovery during the mixotrophic denitrification process

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Journal of Environmental Sciences 2023年第3期125卷 443-452页

作者： Cong Yu sen Qiao Jiti Zhou Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education China)School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

We propose a novel sulfide-driven process to recover N_(2)O during the traditional denitrification *** optimum initial sulfide concentration was 120 mg/L,and the N_(2)O percentage in the gaseous products (N_(2)O+N_(2)) was up to 82.9%.Moreover,sulfide involved in denitrification processes could substitute for organic carbon as an electron donor,e.g.,1g sulfide was equivalent to 0.5-2 g COD when sulfide was oxidized to sulfur and *** accumulation of N_(2)O was mainly due to the inhibiting effect of sulfide on nitrous oxide reductase (N_(2)OR),which was induced by the supply insufficiency of electrons from cytochrome c (cyt c) to N_(2)*** the initial sulfide concentration was 120 mg/L,the N_(2)OR activity was only 36.8%of its original *** to the results of cyclic voltammetry,circular dichroism spectra and fluorescence spectra,significant changes in the conformations and protein structures of cyt c were caused by sulfide,and cyt c completely lost its electron transport *** study provides a new concept for N_(2)O recovery driven by sulfide in the denitrification *** addition,the findings regarding the mechanism of the inhibition of N_(2)OR activity have important implications both for reducing emissions of N_(2)O and recovering N_(2)O in the sulfide-driven denitrification process.

关键词： N_(2)O recovery N_(2)OR inhibition Cytochrome c Electron transfer capacity

An extended state observer with adjustable bandwidth for measurement noise

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Journal of Systems Engineering and Electronics 2024年第1期35卷 233-241页

作者： ZHANG Shihua QI Xiaohui YANG sen Shijiazhuang Campus Army Engineering University of PLAShijiazhuang 050053China

In this paper,a bandwidth-adjustable extended state observer(ABESO)is proposed for the systems with measurement *** is known that increasing the bandwidth of the observer improves the tracking speed but tolerates noise,which conflicts with observation ***,we introduce a bandwidth scaling factor such that ABESO is formulated to a 2-degree-of-freedom *** observer gain is determined and the bandwidth scaling factor adjusts the bandwidth according to the tracking *** the tracking error decreases,the bandwidth decreases to suppress the noise,otherwise the bandwidth does not *** is proven that the error dynamics are bounded and converge in finite *** relationship between the upper bound of the estimation error and the scaling factor is *** the scaling factor is less than 1,the ABESO has higher estimation accuracy than the linear extended state observer(LESO).Simulations of an uncertain nonlinear system with compound disturbances show that the proposed ABESO can successfully estimate the total disturbance in noisy *** mean error of total disturbance of ABESO is 15.28% lower than that of LESO.

关键词： extended state observer(ESO) boundedness and convergence adjustable bandwidth measurement noise

Reaction Effect of Gravitational Radiation of Rotating Ellipsoid as Central Body upon the Variation of Celestial Orbital Plane

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Chinese Physics Letters 1997年第5期14卷 328-331页

作者： LI Lin-sen Department of Physics Northeast Normal UniversityChangchun 130024

The Reaction effect of gravitational radiation emitted from central body with quadrupole moment on the variation of celestial orbital plane was studied in *** derive the formulas for the relation between the variation of the inclination of the orbital plane and contraction of the orbital radius with *** expressions deduced were applied to the estimation for the evolution of the systems of planet-satellite(Jupiter-2 and Neptune-1).

关键词： orbital radius contraction

Experimental study on the space charge properties in haze events

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Journal of Environmental Sciences 2020年第1期32卷 361-376页

作者： Xiaobin Zhang sen Yang Tianli Bo Key Laboratory of Mechanics on Western Disaster and Environment Lanzhou University

In recent years,haze has posed a serious threat to the global climate change,ecological balance and human *** this study,the laboratory experiments and field observations were performed and a possible charging mechanism was proposed to investigate the space charge properties in haze *** laboratory experiments showed that the charge polarity of primary aerosol is determined by species of combustion fuels while the magnitude is dependent on the combustion *** field observations revealed that the space charge of atmosphere aerosol in haze events differs from that of fair weather and is closely related to PM2.5 concentration when Relative Humidity(RH)<60%,with 1 to 2 orders of magnitude less than the case when RH≥60%.The analysis of equivalent chargeto-mass ratio(ECTM)suggested that in haze events the space charge is governed by primary aerosol emitted by combustion of fossil fuel in a low relative humidity,whereas it is manipulated by the secondary chemical reaction of atmosphere aerosol in a high relative *** we can identify the main pollutants in haze events according to the polarity of atmosphere aerosol and quickly take measures when RH<60%.Accordingly,the dusthaze of RH<80% can be divided into dry-dust-haze when RH<60%and wet-dust-haze when 60%≤RH<80%.Our study firstly elucidated the space charge properties of atmosphere aerosol in haze events and can provide a new perspective for the prevention and control of air pollution.

关键词： Haze Atmosphere aerosol Space charge density(SCD) Equivalent charge-to-mass ratio(ECTM) Charging mechanisms

Method for Evaluating Digital Video Electromagnetic Information Leakage from Video Cable

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Chinese Journal of Electronics 2021年第5期30卷 978-985页

作者： WANG sen QIU Yang TIAN Jin AECC Aero Engine Control System Institute Electromagnetic Compatibility Laboratory Xidian University

Electromagnetic emissions from electrical information equipment may contain useful information and lead to information leakage. In order to detect the electromagnetic information leakage of digital video cable,a rapid testing method for computer video information leakage detection without reconstructing the displayed image is proposed. In this method, the electromagnetic radiation spectrum of typical image transmitted by HDMI cable is simulated. Then the electromagnetic radiation spectrum of the computer when transmitting the same image as the typical image is obtained by conduction and radiation EMC test methods. Finally, the correlation between the spectrum of simulation and the test spectrum is analyzed, and the correlation coefficient is used to judge whether the computer has produced the electromagnetic leakage of video information. The analysis and test results show that when the correlation coefficient is greater than 0.5, the electromagnetic leakage of computer video information can be judged.

关键词： lead rapid testing method computer video information leakage detection displayed image electrical information equipment evaluating digital video electromagnetic information leakage test spectrum typical image electromagnetic leakage electromagnetic radiation spectrum HDMI cable correlation coefficient electromagnetic emissions digital video broadcasting electromagnetic compatibility digital video cable