Intensive and large-scale underground coal mining has caused geological disasters such as local ground subsidence, cracks collapse in the Datong coalfield, China, inducing serious threats to residents. Interferometric synthetic aperture radar (InSAR) capability of surface deformation detection with high precision vast mountainous areas. DInSAR, stacking-InSAR SBAS-InSAR are commonly used InSAR-related analysis methods. They can provide effective support for mine ecological security...

On August 8, 2017, a magnitude 7.0 earthquake struck Jiuzhaigou County in Sichuan Province, triggering numerous coseismic landslides. The prompt identification of these landslides is imperative for emergency rescue efforts and post-earthquake hazard assessments. Optical satellite unmanned aerial vehicle (UAV) images are often obstructed by cloud cover fog following earthquakes. In contrast, polarimetric synthetic aperture radar (PolSAR), unaffected adverse weather conditions, emerges as an...

Molybdenum disulfide, a type of two-dimensional layered material with unique properties, has been widely used in many fields. However, an exact understanding its toxicity remains elusive, let alone effects on the environmental microbial community. In this study, we utilized metabolomics technology to explore different concentrations molybdenum disulfide nanosheets Escherichia coli for first time. The results showed that increasing concentration nanosheets, survival rate was decreased and...

The inversion of ocean currents is a significant challenge and area interest in remote sensing. Spaceborne along-track interferometric synthetic aperture radar (ATI-SAR) has several advantages benefits, including precise observations, extensive swath coverage, high resolution. However, limited number spaceborne (InSAR) systems are operating orbit. Among these, the baseline length generally suboptimal, resulting low accuracy difficulty achieving operational stability. One approaches involves...

Abstract: A landslide occurred on January 22, 2024 in Zhenxiong county, China, resulting 44 fatalities and the collapse of around 400 structures buildings. Timely understanding formation mechanism is crucial for guiding emergency relief, disaster prevention reduction, post reconstruction.This study evaluates potential China’s L-band SAR satellites (LuTan-1A/Lutan-1B) slope stability analysis County based R-index sensitivity evaluation. Using stacking methodology differential...

Rock glaciers are typical periglacial landforms with tongue or lobate morphological shapes and characterized by the distinct front, lateral margins, often ridge-and-furrow surface topography textures as well kinematic characteristics, widely distributed in alpine environments. Multitemporal Synthetic aperture radar interferometry (MT-InSAR), is a remote sensing technique demonstrated effectiveness for detecting landform kinematics. However, its application to rock challenged temporal...

Abstract Okara, a renewable biomass resource, is promising fermentative raw material for the bio-production of value-added chemicals due to its abundance and low-costs. we developed process enzymatic hydrolysis okara, then engineered Bacillus subtilis utilize mixed sugars produce acetoin in okara without addition supplemental nitrogen source. Okara was initially hydrolyzed with cellulase, β-glucosidase, pectinase obtain hydrolysate containing (32.78 ± 0.23 g/L glucose, 1.43 0.064 arabinose,...

Slope failures, subsidence, earthworks, consolidation of waste dumps, and erosion are typical active deformation processes that pose a significant hazard in current abandoned mining areas, given their considerable potential to produce damage affect the population at large. This work proves exploiting space-borne InSAR airborne LiDAR techniques, combined with data inferred through simple slope stability geotechnical model, obtain update inventory maps deformations areas. The proposed approach...

Monitoring of mining-induced subsidence dynamics enables to the exploration and analysis changes in direction surface deformation caused by extraction underground resources. Both human activities geological environments affect these a large extent. LuTan-1 (LT-1) satellite as first SAR mission with L-band bistatic spaceborne China, provides continuous imagery for analyzing deformations through differential interferometry, offering valuable velocity results using stacking techniques. The bowl...

Arachidonic acid (ARA) is an important polyunsaturated fatty having various beneficial physiological effects on the human body. The aging of Mortierella alpina has long been known to significantly improve ARA yield, but exact mechanism still elusive. Herein, multiple approaches including large-scale label-free comparative proteomics were employed systematically investigate mentioned above. Upon ultrastructural observation, abnormal mitochondria found aggregate around shrunken lipid droplets....

Phase unwrapping (PU) represents a key step in the reconstruction of digital elevation models (DEMs) and monitoring surface deformation from interferometric synthetic aperture radar (InSAR) data. Compared with single-baseline (SB) PU, multi-baseline (MB) PU can resolve phase discontinuities caused by noise layover induced terrain undulations. However, MB performance is limited primarily its poor robustness to measurement bias noise. To address this problem, we propose refined 2-D method...

Coal mining leads to surface subsidence, landslides, soil erosion and other problems that seriously threaten the life property safety of residents in areas, it is urgent obtain subsidence information using high-frequency, high-precision large-scale monitoring methods. Therefore, this paper mainly studies deformation Datong area Lutan-1 monostatic bistatic SAR data. Firstly, latest data are used reconstruct DSM, interferometric calibration method improve accuracy DSM. Then, implemented by...

Abstract Acetoin, a versatile platform chemical and popular food additive, poses challenge to the biosafety strain Bacillus subtilis when produced in high concentrations due its intrinsic toxicity. Incorporating PHB synthesis pathway into 168 has been shown significantly enhance strain’s acetoin tolerance. This study aims elucidate molecular mechanisms underlying response of B. 168- phaCBA stress, employing transcriptomic metabolomic analyses. Acetoin stress induces fatty acid degradation...

Gaofen-3 is the first Chinese spaceborne C-band SAR satellite with multiple polarizations. The satellite’s data has few applications for monitoring landslides at present, and its potential use requires further investigation. Consequently, we must evaluate analyze landslide interference quality displacement derived from data, particularly in high steep, mountainous regions. Based on nine datasets gathered 2020–2021, this study used DInSAR technology to track Mao County, Sichuan Province,...