A5024634562- Climate change and permafrost
- Cryospheric studies and observations
- Microwave Engineering and Waveguides
- Soil Carbon and Nitrogen Dynamics
- Advanced Antenna and Metasurface Technologies
- Arctic and Antarctic ice dynamics
- Antenna Design and Analysis
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Solar-Powered Water Purification Methods
- Membrane Separation Technologies
- Enzyme-mediated dye degradation
- Acoustic Wave Resonator Technologies
- Computer Graphics and Visualization Techniques
- Environmental Quality and Pollution
- Photonic Crystals and Applications
- Plant and fungal interactions
- Solar Thermal and Photovoltaic Systems
- Soil Moisture and Remote Sensing
- Innovative concrete reinforcement materials
- Material Properties and Processing
- Paleontology and Stratigraphy of Fossils
- Multiferroics and related materials
- Biocrusts and Microbial Ecology
- Polar Research and Ecology
Northeast Agricultural University
2008-2025
Tianjin Medical University
2019-2025
Nanjing Agricultural University
2024
Jilin Agricultural University
2024
South China Institute Of Environmental Sciences
2024
Guangdong University Of Finances and Economics
2023
Guangdong University of Finance
2023
Shenzhen Technology University
2023
Beijing University of Chemical Technology
2022
University of Electronic Science and Technology of China
2018
Single fed low profile cavity backed crossed slot antennas for dual frequency linear polarization and circular applications are first presented in this paper. By employing the substrate integrated waveguide (SIW) technique antenna designs, structure can be realized by using only a single layer of cost printed circuit board (PCB) substrate. A grounded coplanar (GCPW) is employed as feeding element to excite <i xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Interfacial solar evaporation (ISE) is a promising technology to relieve worldwide freshwater shortages owing its high energy conversion efficiency and environmentally sustainable potential. So far, many innovative materials evaporators have been proposed applied in ISE enable highly controllable efficient solar-to-thermal conversion. With rational design, can achieve excellent management for lowering loss, harvesting extra energy, efficiently utilizing the system improve production. Beyond...
Ice-jam floods (IJFs) are a significant hydrological phenomenon in the upper reaches of Heilongjiang River, posing substantial threats to public safety and property. This study employed various feature selection techniques, including Pearson correlation coefficient (PCC), Grey Relational Analysis (GRA), mutual information (MI), stepwise regression (SR), identify key predictors river ice break-up dates. Based on this, we constructed machine learning models, Extreme Gradient Boosting...
The physical and mechanical characteristics of seawater coral sand engineered cementitious composites (SCECC) were examined through uniaxial compression, three-point bending, splitting tensile tests. properties scrutinized under varying fiber volume fraction conditions (V = 0%, 0.575%, 1.150%, 1.725%, 2.300%). experimental results indicated that the compressive strength, bending split strength SCECC tended to increase with rise in fraction. strengths attained their maximum values 45.88,...
Rapid urbanization has a comprehensive impact on the patterns of regional ecological security (ESPs) in Sino-Singapore Guangzhou Knowledge City, China (SSGKC). This study aims to propose recommendations for ensuring by conducting spatiotemporal dynamic assessment ESPs. The findings reveal that SSGKC experienced rapid past decade, resulting more than doubling construction land. results indicate area largest 10 patches ESs decreased 13.5%. Two southwest became smaller and were out top 2020....
Ground penetrating radar (GPR) has proven to be a very effective method for examining ice thickness. However, two preconditions must met this approach useful; the round-trip travel time of electromagnetic (EM) waves and transmission speed in known. These issues are problematic because many factors affect ice, including impurities, physical properties such as porosity density, temperature. Results show that if these not taken into account signal velocity 0.17 m/ns pure is used estimate...
This article proposed the design of bandpass filter (BPF) based on stepped window resonators (SWRs), which allows inline to produce transmission zero (TZ). Compared with traditional cavity resonator using iris-coupled structure, SWR consists two metal cavities, larger is regarded as a bandstop provide TZ near passband. Therefore, each pair can generate pole (TP) and TZ. Two cavities are directly cascaded without any coupling iris, increases interface between these reduces fabrication...
Snow, as an important component of the cryosphere, holds a crucial role in construction polar infrastructure. However, current research on mechanical properties snow is not comprehensive. To contribute to our understanding behaviors cold regions, uniaxial compression tests under step loading were performed snow. With Maxwell model basis, different temperatures, densities, and rates set establish constitutive equations The changes elastic modulus viscosity coefficient with respect three...
The ice flood phenomenon frequently occurs in frigid locations of high latitude and altitude, which triggers dam or jam flooding thus endangering personal property safety. Hence, a scientific risk evaluation with enough consideration each factor is basic necessary requirement for preventing disaster risks. This study establishes system disasters based on the catastrophe theory utilizes Pearson correlation coefficient to screen underlying indicators evaluate upper Heilongjiang River region....
A series of novel N , N' ‐disubstituted‐1,2,3,4‐tetrahydroquinoxalines were designed and synthesized by cyclization acylation. The structures all the compounds confirmed IR, 1 H NMR, 13 C high‐resolution mass spectrometry. configuration 4d was determined X‐ray diffraction. preliminary biological tests showed that products could protect maize against injury caused acetochlor to some extent.
Spoof Surface Plasmon Polariton (SSPP) transmission line is a novel type of surface wave structure in microwave and terahertz frequency range. For limited electromagnetic field between corrugated metal dielectric, SSPP lines components have the advantages wideband adjustment, miniaturization high integration. In this paper, influence several geometric parameters on dispersion curves oral-ring unit analyzed. And then, attenuation constant oval-ring calculated. Finally, splitters with cell are...
The scarcity of freshwater is one the challenges faced by humanity today. Solar desalination technology gaining increasing attention due to its environmental friendliness and sustainability. However, service life evaporator significantly reduced problem salt deposition during evaporation process. In this work, a porous Janus with asymmetric wettability was fabricated using an atomization-assisted non-solvent induced phase separation method. bottom surface polyacrylonitrile...
Overwinter fertilization can promote the gentle release of nutrients from organic fertilizers into soil, thereby enhancing soil quality. Climate warming reduces winter snowfall, affecting hydrology and nutrient flux. The agricultural are influenced by both natural environmental changes field management practices, resulting in structure composition fungal communities. However, overall effects reduced snowfall on fungi soils remain uncertain inadequately studied. aim this study was to model...
Ice is a common natural phenomenon in cold areas, which plays an important role the construction of areas and design artificial ice rinks. To supplement our knowledge mechanics, this paper investigates mechanical properties granular snow ice. The factors influencing flexural strength are analyzed through three-point bending test. It found that affected by strain rate. At low rates, increases with increasing rate, whereas at high decreases As temperature decreases, value increases, but its...