Mei Han

ORCID: 0000-0003-3407-4502
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About
Contact & Profiles
Research Areas
  • Landslides and related hazards
  • Fire effects on ecosystems
  • Environmental Changes in China
  • Dam Engineering and Safety
  • Geoscience and Mining Technology
  • Geotechnical Engineering and Analysis
  • Geomechanics and Mining Engineering
  • Land Use and Ecosystem Services
  • Geology and Paleoclimatology Research
  • Electrochemical Analysis and Applications
  • Heavy metals in environment
  • Advanced Vision and Imaging
  • Environmental remediation with nanomaterials
  • Civil and Geotechnical Engineering Research
  • Environmental Quality and Pollution
  • Geological and Geophysical Studies
  • Educational Technology and Pedagogy
  • Video Surveillance and Tracking Methods
  • Cryospheric studies and observations
  • Water Quality Monitoring and Analysis
  • Regional Development and Environment
  • Analytical chemistry methods development
  • China's Socioeconomic Reforms and Governance
  • Remote Sensing and Land Use
  • Soil erosion and sediment transport

Southwest Jiaotong University
2018-2023

West Anhui University
2019-2021

Beijing Institute of Aeronautical Materials
2020

Chinese Academy of Geological Sciences
2018-2020

Tianjin Medical University
2018

Tianjin Medical University Eye Hospital
2018

Nanjing University of Science and Technology
2015

Northwest Normal University
2006-2012

Dalian University of Technology
2011

Peking University
2009

The post-fire debris flow (PFDF) is a commonly destructive hazard that may persist for several years following the wildfires. Susceptibility mapping an effective method mitigating risk. Yet, majority of susceptibility prediction models only focus on spatial probability in specific period while ignoring change associated with time. This study improves predictive model by introducing temporal factor. area burned 30 March 2020 fire Xichang City, China selected as illustrative example, and PFDF...

10.3390/rs14061306 article EN cc-by Remote Sensing 2022-03-08

Recent advances in Large Language Models (LLMs) have enabled them to process increasingly longer sequences, ranging from 2K 2M tokens and even beyond. However, simply extending the input sequence length does not necessarily lead effective long-context understanding. In this study, we integrate Chain-of-Thought (CoT) reasoning into LLMs a supervised manner facilitate To achieve this, introduce LongFinanceQA, synthetic dataset financial domain designed improve reasoning. Unlike existing data,...

10.48550/arxiv.2502.13127 preprint EN arXiv (Cornell University) 2025-02-18

This paper presents a recent rainfall-induced landslide in China that occurred on August 21, 2020 and resulted nine deaths. The sliding material traveled distance of 800 m, with an altitude difference about 180 m. A field investigation, remote sensing based unmanned aerial vehicle (UAV), situ monitoring, rainfall data analysis were carried out to reveal the deposit characteristics, causative factors, post-landslide behavior, mechanism landslide. saltatory micro-relief original slope...

10.3390/rs13091653 article EN cc-by Remote Sensing 2021-04-23

In this paper, we describe a reconstruction method for multiple motion scenes, which are scenes containing moving objects, from uncalibrated views. Assuming that the objects with constant velocities, recovers scene structure, trajectories of camera motion, and intrinsic parameters (except skews) simultaneously. We focus on case where cameras have unknown varying focal lengths while other known. The number is automatically detected without prior segmentation. based unified geometrical...

10.1109/tpami.2003.1206517 article EN IEEE Transactions on Pattern Analysis and Machine Intelligence 2003-06-23

Energy-intensive ozonation processes could potentially evolve to flexible ozone (O3) dosing strategies that depend on variations of feedwater quality. Herein, we demonstrate a surrogate indicator using UV absorbance for timely indicating O3 performance controlling disinfection byproduct (DBP) formation tendency, which enable prompt adjustment operation in practical drinking water treatment plants (DWTPs). We specifically focused treating the sourced from central route China's South-to-North...

10.1021/acsestengg.4c00604 article EN ACS ES&T Engineering 2024-10-14

Iron-bearing amendments, such as iron grit, are proved to be effective amendments for the remediation of arsenic- (As-) contaminated soils. In present study, effect redox condition on As fractions in As-contaminated soils remediated by grit was investigated, and bioaccessibility under anoxic evaluated. Results showed that labile decreased significantly after addition while unlabile increased rapidly, negligible 180 d incubation. More iron-amended were transformed into less mobilizable or...

10.1155/2018/5243018 article EN cc-by Geofluids 2018-01-01

Based on air temperature from ECMWF data, three groups of training period schemes that include original schemes, improved and application are designed to test compare results daily maximum minimum national stations in Fujian Province twice per day 2014 2015. For the quasi-symmetrical mixed running (QSRTP) method, several days current year before forecasting equal numbers last after adopted separately compose an initial 1-year or multi-year dataset. When using multiple-year lengths optimal...

10.11898/1001-7313.20160405 article EN 应用气象学报 2016-07-31

Debris flow is a major secondary geological process associated with the 2008 M7.9 Wenchuan Earthquake area, causing loss of around 200 lives as well extensive property damage. Based on data developed over past 21 years (1998–2018) continuous monitoring debris events in Sichuan, temporal and spatial aspects flows have been analyzed, including magnitude frequency. The 21-year study period divided into three time-intervals: 1998–2007 (pre-earthquake), 2008–2013 (short-term post-earthquake),...

10.3389/feart.2022.946301 article EN cc-by Frontiers in Earth Science 2023-01-06

Along the Duwen freeway in Wenchuan earthquake area, there are two main types of debris flow channels, that is, wide-gentle channel and narrow-steep channel. The has feature gentle longitudinal slope, large mean width catchment area. Whereas one generally shows opposite features with narrow small catchment
 During heavy rainfall, these channels subject to large-scale flows due huge amount earthquake-induced collapsing sliding materials. With field investigation on formation conditions...

10.3126/jngs.v55i1.22808 article EN Journal of Nepal Geological Society 2018-06-04

This paper presents a typical 450 m high rock slope in highly jointed and fractured mass at Pubugou (PBG) hydropower station on the Dadu River. We established set of multiphase field geological survey combined with GPS, inclinometers, piezometer monitoring system to analyze deformation failure mechanism slope. The results show that small-scale excavation road construction disrupted balance (PBGRS), several local retrogressive failures occurred toe. Monitoring data regarding surface...

10.1155/2021/6615424 article EN cc-by Geofluids 2021-02-12

Abstract: Theeffectofinorganicsaltsonthephysical鄄chemicalpropertiesofthecommercialalkylpolyglucoside (APG)APG1214wasstudiedtoexplainhowitenhancedthecrudeoilremoval

10.3866/pku.whxb20091102 article EN Acta Physico-Chimica Sinica 2009-01-01
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