Results 31 to 40 of about 2,817 (247)
New technologies and new equipments of coal mine monitoring
Gong-kuang zidonghua, 2015 The paper analyzed the national coal production，the total number of accidents, the death rate per million tons and the changes of serious accidents. On average per year, the coal production had increased by 194 million tons, the number of accidents had ...
SUN Jiping
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Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Design of online monitoring system of coal mine voltage quality based on LabVIEW
Gong-kuang zidonghua, 2016 In view of increasingly serious problem of power supply quality of coal mine power grid, an online monitoring system of coal mine voltage quality was designed by use of signal processing circuit, data acquisition unit and technology of virtual instrument
LI Jinxi, CHEN Jiyong
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Catalytically Enhanced Near Room‐Temperature Hydrogen Sensing Using Pd‐ZnO Colloidal Crystals
Advanced Functional Materials, EarlyView.Pd‐decorated ZnO colloidal crystal monolayers demonstrate excellent performance across a wide hydrogen concentration range at 33°C, with high selectivity and reproducible device fabrication. The sensors show strong responses even at low‐ppm H2 concentrations and an ultra‐low detection limit of 82 ppb, indicating their suitability for diverse hydrogen ...
Hamidah Alluhaybi +13 more
wiley +1 more source
Polymer Substrates for Flexible Sensors: Advances and Contributions to Smart Agriculture
Advanced Functional Materials, EarlyView.This review comprehensively summarizes recent advances in polymer‐based flexible sensors for smart agriculture, focusing on polymer substrate design, interface engineering, and applications in soil, plant, animal, aquaculture, and post‐harvest monitoring.
Yihui Li +12 more
wiley +1 more source
The external costs of coal mining: the case of collieries supplying Kusile power station
Journal of Energy in Southern Africa, 2012 The aim of this paper was to quantify the external costs of mining and transporting coal to the Kusile coal-fired power station in eMalahleni. Monetary values were estimated for a number of impacts including its contribution to climate change, human health effects of classic air pollutants, mortality and morbidity, impacts of water pollution and water ...
Nkambule, Nonophile Promise +1 more
openaire +3 more sources
Electrochromic Adaptive Solar Heater and Sub‐Ambient Passive Daytime Radiative Cooler
Advanced Materials, EarlyView.An electrochromic Cu–Bi nanocluster device dynamically switches between solar heating and daytime sub‐ambient radiative cooling without mechanical motion. Defect‐activated graphene, minimized electrolyte loss, and pulse‐assisted reversible electrodeposition enable opposite solar and mid‐infrared modulation in one opaque platform, establishing a design ...
Chenxi Sui +11 more
wiley +1 more source
Prospect for hybrid DC power system in coal mine
矿业科学学报, 2017 According to the electrical load characteristics in the coal mine, a sequence of the hybrid DC power system voltage is proposed, and the analysis indicates its rationality from the power supply capacity and power supply distance.
Wang Yanwen, Guo Lin, Gao Feng, Gao Yan
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Meitan xuebaoWith the advancement of the “dual-carbon”goal, utilizing renewable energy resources to reduce carbon emissions in the coal mining process has become a significant development trend.However, the construction of mine multi-energy complementary systems ...
Longfei WANG +6 more
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Analysis of anti-override trip program for underground power supply system
Gong-kuang zidonghua, 2015 Anti-override trip program for multi-level short line power supply system and its protective action principle were introduced combined transform instance of anti-override trip system of Juji Coal Mine. The program first uses fiber differential protection
LUAN Yongchun, CHEN Kunpeng
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