A5010382043- Spectroscopy and Laser Applications
- Laser Design and Applications
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Surface Roughness and Optical Measurements
- Water Quality Monitoring and Analysis
- Remote Sensing and LiDAR Applications
- Advanced Optical Sensing Technologies
- Energy, Environment, Economic Growth
- earthquake and tectonic studies
- Analytical Chemistry and Sensors
- Advanced Measurement and Metrology Techniques
- Optical Systems and Laser Technology
- Advanced Sensor and Control Systems
- Energy, Environment, and Transportation Policies
- 3D Surveying and Cultural Heritage
- Environmental Impact and Sustainability
- Advanced Measurement and Detection Methods
- Geological and Geophysical Studies
- Advanced Sensor Technologies Research
- Air Quality Monitoring and Forecasting
- Image and Object Detection Techniques
- Climate Change Policy and Economics
- Concrete and Cement Materials Research
- Market Dynamics and Volatility
Chinese Academy of Sciences
2006-2025
Aerospace Information Research Institute
2023-2025
Hunan University
2022
Lanzhou University
2021
Academy of Opto-Electronics
2016-2019
University of Chinese Academy of Sciences
2019
Beijing University of Technology
2016-2017
Development Research Center
2016-2017
Anhui Institute of Optics and Fine Mechanics
2006-2007
As the result of climate change and deteriorating global environmental quality, nations are under pressure to reduce their emissions greenhouse gases per unit GDP. China has announced that it is aiming not only carbon emission GDP, but also consume increased amounts non-fossil energy. The allowance a new type financial asset in each Chinese province city affects individual firms. This paper attempts examine allocative efficiency reduction energy consumption by employing zero sum gains data...
Hyperspectral LiDAR (HSL) is a promising active detection technique for underwater positioning and remote sensing, enabling the simultaneous acquisition of three-dimensional topographic spectral information targets. This study presents an advanced hyperspectral (UDHSL) system with range 450–700 nm, adjustable bandwidth 10–300 tunable repetition frequency 50 kHz to 1 MHz. The achieves high precision laser divergence angle ≤1 mrad, pulse width 7 ns, energy 7.5 µJ, ranging resolution 1.13 cm...
Many countries and scholars have used various strategies to improve optimize the allocation ratios for carbon emission allowances. This issue is more urgent China due uneven development across country. paper proposes a new method that divides low-carbon economy processes into two separate periods: from 2020 2029 2030 2050. These periods unique requirements emissions reduction potential; therefore, they must involve different methods, so behaviors do not stall of regional economies. During...
The analysis of greenhouse gas emission characteristics on urban roads is great significance for understanding the sources and sinks gases their changing patterns. Based tunable diode laser derivative absorption spectroscopy technology, which features high resolution, sensitivity, fast response, a vehicle-mounted system capable simultaneously detecting CO2 CH4 has been developed. response time 0.38 s, with detection sensitivities 5 ppb 0.2 ppm CO2, power consumption approximately 4.8 W,...
The thermometry based on absorption spectroscopy and developing of a temperature sensor is introduced, in which retrieved by measuring line strength ratio between pair absorptions water vapor near 1.4 μm. first calibrated tubular furnace then used to verify measurement results with the heating tube whose both sides are open, an average fluctuation about 50 K obtained at each setpoint. Some new lines H2O one (centered 7153.7 cm -1) selected observed during demonstration measurements for...
Hydrogen Sulfide is a highly toxic and flammable gas. It generated as common by-product of many industrial processes. Early detection H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S at concentrations 10 ppm in air essential to prevent its influence higher concentrations. Tunable diode Laser based gas detectors are now being used wide variety applications for safety environmental interest. Their characteristics like non-intrusive,...
Reliable spectroscopic parameters of probed species at high temperature, such as line strengths, self-broadening coefficients, air-broadening and temperature exponents, are important in absorption spectroscopy for accurately studying properties, concentration, speed, their corresponding field distributions. However, from widely used database HITEMP mainly theoretical calculation results, there exist considerable errors compared with the results actual situations. In order to validate CO2...
A modulation frequency multiplexed dual diode-laser system is developed for simultaneous detection of the two most common fire gas products CO and CO2. Simultaneous achieved by modulating each laser at different frequencies, demodulating signal a pair lock-in amplifiers gas. Laser beams are combined detected one detector after passing through an identical optical path. The experimental results show little performance degradation associated with multiplexing, no cross-talk between channels measured.
Fully weathered granite (FWG) is a commonly used material for filling the subgrade of highway. Existing conventional laboratory experiments indicated that it can be classified as sandy soil per its particle diameter. Blending fly ash within FWG, referring to ash-amended fully (FAFWG), seems heighten strength and bearing capacity. To estimate optimal proportion ash, unconfined compressive (UCS) tests had been conducted on six categories FWG specimens with different contents lime (as an...
The subsurface fault geometry is the base for understanding a process of crust deformation and mountain building. Based on kinematic models fault-related folds, geomorphic method recently applied to estimate geometry, while validation its reliability lacking. In this study, we surveyed suit river terrace surfaces across an active fold at north front Qilian Shan. According terraces, interpreted by listric model, based underlying estimated. comparison between estimated seismic reflection...
A diode laser sensor based on absorption spectroscopy has been developed for the measurement of spectroscopic parameters R(50) line at 5007.787cm<sup>-1</sup> (20012<-00001 band) CO<sub>2</sub>. Survey spectra CO<sub>2</sub> - CO mixture gas with 49.82% were recorded different temperatures and pressures through a high temperature system using tunable spectroscopy. High-resolution measurements shape used to determine collisional broadening full-width by as function pressure temperature....