A5101964537- Chalcogenide Semiconductor Thin Films
- Optical Wireless Communication Technologies
- Viral Infections and Immunology Research
- Semiconductor Lasers and Optical Devices
- Animal Disease Management and Epidemiology
- Structural Analysis and Optimization
- Data-Driven Disease Surveillance
- Thermal properties of materials
- Quantum Dots Synthesis And Properties
- Air Quality and Health Impacts
- COVID-19 epidemiological studies
- Photonic and Optical Devices
- Advanced Sensor and Control Systems
- Influenza Virus Research Studies
- Energy and Environment Impacts
- Seismic Waves and Analysis
- Advanced Wireless Communication Techniques
- Aeroelasticity and Vibration Control
- Magnetic Bearings and Levitation Dynamics
- Electrocatalysts for Energy Conversion
- Data Management and Algorithms
- Viral Infections and Outbreaks Research
- Data Stream Mining Techniques
- Optical Network Technologies
- Seismic Imaging and Inversion Techniques
China Academy of Space Technology
2019-2025
Guangzhou Metro Group (China)
2009-2024
Guangzhou Metro Design & Research Institute
2024
Anhui Normal University
2024
University of Hong Kong
2023
Shenzhen Center for Disease Control and Prevention
2012-2022
State Key Laboratory of Remote Sensing Science
2021-2022
Hanzhong People's Hospital
2022
Beijing Jiaotong University
2020
First Affiliated Hospital of Fujian Medical University
2018
A novel solventothermal route to group II−VI nanocrystalline CdE (E = S Se, Te) semiconductors has been successfully developed. The reaction can be expressed as CdC2O4 + E 2CO2↑. As-prepared powders in polyamines such ethylenediamine, diethylenetriamine, and triethylenetetraamine display rodlike morphology with diameters of 20−50 nm lengths up several microns. the present method controlled by choosing different solvents. CdS nanorods synthesized optical properties from disklike particles pyridine.
SummaryBackgroundVirological detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) through RT-PCR has limitations for surveillance. Serological tests can be an important complementary approach. We aimed to assess the practical performance RT-PCR-based surveillance protocols and determine extent undetected SARS-CoV-2 infection in Shenzhen, China.MethodsWe did a cohort study China attempted recruit by telephone all RT-PCR-negative close contacts (defined as those who lived...
A solvothermal reaction of metal oxalates such as PbC2O4 , Bi2(C2O4)3 with E (E=S, Se, Te) in organic solvents at relatively low temperature (120–160 °C) produces crystalline PbS, PbSe, PbTe, Bi2S3 Bi2Se3 and Bi2Te3 :PbC2O4+Esolvent
Influenza, a disease caused by respiratory virus, sickened over 5,043,127 citizens in Shenzhen, China, from January 2014 to April 2016. An accurate forecasting of outbreaks influenza-like illness (ILI, here we refer ILI as the upper infection) could facilitate public health officials suggest actions earlier. In this study, random forest regression constructed with one-year period factors was adopted forecast weekly rate using clinical data Shenzhen Health Information Center. The following...
This paper presents a distributed vibration control method using attachable absorbers for micro-vibration of large space payload structures. The system is modeled at three levels. simplification the absorber model discussed, and single-channel ANC controller extended to multi-channel configuration. Based on models, simulation analysis conducted, revealing that voltage-force output in low-frequency range can be simplified second-order system. During simulation, Simulink-GA hybrid optimization...
: China is at its most important stage of air pollution control. Research on the association between pollutants and human health very necessary. The purpose this study was to evaluate PM
The ongoing coronavirus disease 2019 (COVID-19) pandemic spread throughout China and worldwide since it was reported in Wuhan city, December 2019. 4 589 526 confirmed cases have been caused by the of severe acute respiratory syndrome 2 (SARS-CoV-2), May 18, 2020. At early stage pandemic, large-scale mobility humans accelerated pandemic. Rapidly accurately tracking population inflow from other cities Hubei province is especially critical to assess potential for sustained transmission new...
SUMMARY This study analysed the spatio-temporal distribution and propagation of hand-foot-and-mouth disease (HFMD) in Shenzhen from 2008 to 2010. Specifically, we examined epidemiological data, temporal spatial distribution, then relationship between meteorological, social factors number reported HFMD cases was using Spearman's rank correlation. Finally, a geographically weighted regression model constructed for 2009. It found that three independent variables, i.e. and, annual average...
Micro-LEDs are one of the most promising candidates for next-generation displays, yet they inconvenienced by efficiency reduction induced sidewall defects when pursuing further scaled-down device dimensions. We have systematically investigated both size and temporal dependence micro-LEDs. Micro-LED arrays with a mesa ranging from 7 to 100 μm were prepared display purposes. The luminance external quantum (EQE) measured discussed. Surprisingly, micro-LED smaller exhibit higher EQE under ns...
Uniform nanocrystalline β‐In 2 S 3 powders have been prepared by reacting the reagents at 140°C for 12 h using an organothermal process in nonaqueous solvents. XRD patterns and TEM images showed that average particle sizes of toluene 1,2‐dimethoxyethane (DME) were 8 16 nm, respectively. The synthesized can be controlled choosing different specific surface areas products obtained DME, which measured BET method, 74.92 36.20 m /g, analyzed XPS, atomic absorption, IR. formation has discussed.
Environmental DNA (eDNA) metabarcoding has been widely used in freshwater systems, contributing to the advancements monitoring of fish diversity and community species composition. Nevertheless, accuracy reliability eDNA assessing functional structures revealing mechanisms underlying assembly remain unclear. In this study, we combined a traditional survey method (electrofishing) conduct stock upper reaches Huishui stream. We assessed taxonomic structures, as well mechanisms, during dry wet...
Grouped modulation is proposed to generate multiple-level optical signals and enhance the data rate for LED-array-module-based indoor visible light communication systems. By dividing LEDs in an array module into n groups driving different with separate circuits, 2nlevel can be realized binary each group. The maximum driven current respective circuits reduced compared that of same PAM which by a single circuit. limitation bandwidth LED module, caused product gain its circuit, alleviated....
Hand, foot, and mouth disease (HFMD) is caused by a group of enteroviruses. It infects millions children in the Southeast Asian area. An accurate forecasting outbreaks HFMD could facilitate public health officials to suggest actions earlier. Many researchers tried develop an early warning system for lower damage outbreak. The research data based on daily level help figure out relationship between environmental factors, but nevertheless difficult collect. In this study, we collected clinical...
Objective: This study aimed to describe the trends of motorization and mortality rates from road traffic accidents examine their associations in a rapidly urbanizing city China, Shenzhen.Methods: Using data Shenzhen Deaths Registry between 1994 2013, we calculated annual accidents, addition age- sex-specific percentage changes (APCs) for period 2000–2013. We also examined rate growth with Spearman's rank correlation analysis log-linear model derived Smeed's law.Results: A total 20,196 deaths...
Nowadays, air pollution is a severe environmental problem in China. To investigate the effects of ambient on health, time series analysis daily outpatient and inpatient visits 2015 were conducted Shenzhen (China). Generalized additive model was employed to analyze associations between six pollutants (namely SO2, CO, NO2, O3, PM10, PM2.5) after adjusting confounding meteorological factors, day week effects. Significant two types hospital observed. The estimated increase overall associated...
Background The epidemic of hand, foot, and mouth disease (HFMD) has become a severe public health problem in the world also brought high economic burden. Furthermore, prevalence HFMD varies significantly among different locations. However, there have been few investigations effects socioeconomic factors air pollution on incidence HFMD. Methods This study collected data Shenzhen, China, from 2012 to 2015. We selected eleven as potential risk for A Bayesian spatiotemporal model was used...
The objective of this paper is to provide a systematic investigation orthogonal experiment design backplane. thermoelectricity reliability systematically investigated by using mixed array L9 (3, 4) based on experimental design. results show that the wire width and pitch have significant impact backplane, while thickness has an unobtrusive effect. A finite element model backplane established sample structure. maximum stress occurred in copper wire, which connected with FR-4 polyimide.