Underground coal gangue sorting is a critical component of modern intelligent mining, holding significant importance for the preservation natural resources and ecological environment. Traditional methods underground suffer from issues such as low efficiency, limited applicability, substantial resource wastage. Addressing these challenges, this paper employs multispectral technology to gather spectral data in various wavelengths. Based on identification accuracy images different wavelength...

In this work, we proposed a numerical model based on the coupling of volume fluid–discrete element method and bond particle (BPM). The simulation bonding structural body formation process had been presented, inter-particle mechanism was introduced. We also tested dam-busting impact elastic wedge plates at high Reynolds numbers (1.26 × 107 2.16 106) compared results with simulations. show that has mean errors 3.9% 6.5% for large micro-deformations, respectively. It is in perfect agreement...

Poyang Lake is the largest freshwater lake in China and well known for its ecological function economic importance. However, due to influence of clouds, it difficult dynamically monitor changes water surface areas using optical remote sensing. To address this problem, we propose a novel method these Sentinel-1A data. First, index (SWI) was built linear model stepwise multiple regression analysis with Landsat-8 imagery acquired on same day. Second, from 24 May 2015 14 November 2016 were...

Abstract To regulate regional water resources, it is essential to identify the relationships among elements that influence conservation. Taking Beijing‐Tianjin‐Hebei urban agglomeration as study area, authors applied a new method in combination with geodetector model and spatial elastic coefficient trajectory reveal factors controlling conservation driving conservation, which capacity its distribution were achieved using an Integrated Valuation of Ecosystem Services Tradeoffs model. The...

Abstract In contrast to the traditional black box machine learning model, white model can achieve higher prediction accuracy and accurately evaluate explain results. Cavity water depth cavity length of aeration facilities are predicted in this research based on Extreme Gradient Boosting (XGBoost) a Bayesian optimization technique. The Shapley Additive Explanation (SHAP) method is then utilized This study demonstrates how SHAP may order all features feature interaction terms accordance with...

Air entraining into water flow is one of the main technical measures to prevent cavitation damage in high-head discharge structures, and most important issue optimization aerators shapes. Different body shapes result different cavity characteristics, but there are currently few quantitative research results on design aerator Based method parameters, this article uses orthogonal experimental theory conduct further sensitivity analysis shape double-arc aeration facility a gentle slope open...

To promote the coordinated and sustainable development of hydropower exploitation ecological environment in upper reaches Yellow River, a fine simulation downstream riverway Yangqu Hydropower Station was carried out to analyze impact changes water depth flow velocity on fish habitats after impoundment Station. In this paper, Gymnocypris eckloni selected as target species. The habitat model constructed using MIKE21. quality species graded by fuzzy logic method with suitable conditions....

The fluid physical mechanism of particle size and crack opening affecting cement slurry flow deposition in cracks was studied. Through the dynamic water grouting experiment numerical simulation mixed slurry, verified model shows that compared with smaller (0.03 mm), larger (0.05 mm) increases amount matrix by 34.8%. It is worth noting concentration sharply when splitting displacement 1.25 2.5 mm. can be intuitively shown for 2 s, settlement 69.8% 81.5% mm non-splitting not mm, respectively....

This study reports on a patient with High IgE Syndrome(HIES), focusing clinical manifestations and pathogenic mechanisms through bioinformatics to enhance understanding treatment. The received appropriate interventions was currently undergoing treatment close monitoring. Additionally, analyses were conducted investigate potential signaling pathways key genes associated HIES. A 28-year-old woman presented 6-month history of cough, worsening dyspnea, eczema diagnosed HIES after elevated...

Strigolactones (SLs) are a series of sesquiterpene lactones that serve as plant hormones to regulate growth and development, such shoot branching, lateral root formation, hair elongation. Recently, SLs have been reported accelerate the leaf senescence, which is also regulated by sugar signals. In this study, we utilized segments bamboo observe senescence confirmed SL accelerates triggers cell death under dark condition rather than light condition. Further studies showed co-treatment sugars...

Abstract In this study, a support vector machine (SVM) and three optimization algorithms are used to develop discharge coefficient (Cd) prediction model for the semi-circular side weir (SCSW). After that, we derived input output parameters of by dimensionless analysis as ratio flow depth at crest point upstream diameter (h1/D), main channel width (B/D), height (P/D), Froude number (Fr), Cd. The sensitivity coefficients Cd were calculated based on Sobol's method. research shows that SVM...

The number of operating high-speed trains in China is around 2800 today and 179,200 wheels are under maintenance one reprofiling period. To help researchers to understand the evolution wheel profile improve strategy wheels, this study predicts development profiles on a train as function mileage compare simulated worn with measured ones. methodology includes transient multi-body dynamic simulation, wheel–rail contact calculation wear Archard's model. Calibrated by analysing measurements...

Piano key weirs (PKWs) have been introduced in recent years as a hydraulically efficient and cost-effective type of spillway, there are more than 30 PKWs under construction or already constructed globally. However, owing to the numerous geometric parameters complex hydraulic characteristics PKWs, discharge capacity PKW is still difficult estimate. To improve overall understanding flow behavior vicinity investigate intrinsic link between structural this study employs combination numerical...