Results 51 to 60 of about 892 (152)

Coal mine rock burst and coal and gas outburst perception alarm method based on color image

open access: yesGong-kuang zidonghua, 2022
The paper analyzes the image characteristics of the thrown coal and rock when rock burst and coal and gas outburst occur. ① The coal and rock thrown out during rock burst and coal and gas outburst are mainly black, but the underground equipment of the ...
SUN Jiping, CHENG Jijie, WANG Yunquan
doaj   +1 more source

No Place to Hide? Regional Resilience and Vulnerability to Global Catastrophic Risk

open access: yesGlobal Challenges, Volume 10, Issue 8, August 2026.
No location on Earth withstands every global catastrophe. This review maps the geographic, institutional and infrastructural factors shaping resilience to nuclear, volcanic and impact winters, infrastructure loss and pandemics. Geographic isolation, food self‐sufficiency, strong governance and decentralization improve resilience across scenarios ...
Florian Ulrich Jehn   +7 more
wiley   +1 more source

Batteries From Reused, Recycled, and Surplus Materials

open access: yesAdvanced Sustainable Systems, Volume 10, Issue 7, July 2026.
Batteries can become more circular by combining reuse, direct recycling, metallurgical recovery, and material sourcing from industrial surplus streams. This Review highlights how recycled and waste‐derived metals, carbons, polymers, electrolytes, and active materials can be reintegrated into current and emerging batteries, while emphasizing design ...
Jing Yu   +16 more
wiley   +1 more source

Engineering Thermochemistry and Process Technologies to Enable Gigaton‐Scale Sustainable Biochar Production

open access: yesSusMat, Volume 6, Issue 3, June 2026.
This review examines large‐scale biochar production technologies and process engineering from an engineering thermochemistry perspective. At the level of thermochemical fundamentals, we discuss thermochemical techniques, pyrolysis mechanisms, and key parameters governing biochar formation.
Dengguo Lai   +12 more
wiley   +1 more source

Research on the minimum ignition temperature variation law of coal dust cloud with different coal quality

open access: yesGong-kuang zidonghua, 2019
In order to research the minimum ignition temperature variation law of coal dust cloud with different coal quality, eight coal samples including lignite, long-flame coal, non-caking coal, gas coal, charred coal, lean coal, meagre coal and anthracite were
LIU Tianqi
doaj   +1 more source

A Review of the Unintended Consequences of Biochar in Various Applications

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 5, May 2026.
Biochar is widely promoted as a sustainable material for applications ranging from soil amendment to energy storage and construction materials. This review critically examines the often‐overlooked and unintended consequences of biochar, including variability in properties, safety risks, and performance limitations.
Singaravelu Vivekanandhan   +14 more
wiley   +1 more source

Application of pneumatic directional drilling technology for soft-fragmentized coal seam in Qinglong Coal Mine

open access: yesGong-kuang zidonghua, 2020
In view of problems of rotary drilling technology for soft-fragmentized coal seam, such as shallow borehole completed depth, uncontrollable borehole trajectory, low drilling efficiency and poor gas drainage effect, pneumatic directional drilling ...
KONG Qingjun, CHU Zhiwei
doaj   +1 more source

Technobiological Pathways for High‐CO₂ Capture Using Micro‐/Macroalgae: Genetic Engineering, Process Automation, and Value‐Added Bioproducts

open access: yesAsia-Pacific Journal of Chemical Engineering, Volume 21, Issue 3, May/June 2026.
ABSTRACT Greenhouse gas (GHG) emissions have emerged as one of the most critical drivers of climate change; this is primarily due to high concentrations and long atmospheric life of carbon dioxide (CO2). For a significant amount of time, various biological processes such as microalgal cultivation, cyanobacterial systems, photosynthetic microorganisms ...
Sadhana Semwal, Harish Chandra Joshi
wiley   +1 more source

Experimental Study on Suppression of Coal Dust Combustion by Inert Medium

open access: yesMeikuang Anquan, 2020
The study aims to analyze the effect of inert medium on coal combustion and effectively prevent spontaneous combustion of coal dust. Thermal analyzer and gas chromatograph were used to measure changes of quality and concentration of CO and CO2.
GU Gongtian, WANG Fei, WANG Cheng, HAN Jinxin
doaj   +1 more source

Protonic Ceramic Electrolysis Cells for Green Energy Conversion: Fundamental Characteristics, Key Components, and Application Potential

open access: yesCarbon Neutralization, Volume 5, Issue 3, May 2026.
This review evaluates innovative research advancing protonic ceramic electrochemical cells from laboratory to large‐scale energy applications. It highlights the critical roles of composition, structure, and preparation in overcoming technical challenges; analyzes the physicochemical stability, interface bonding strength, and electrochemical‐thermal ...
Ziyi Zhu   +6 more
wiley   +1 more source

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