Characteristics of Stratum Structure and Fracture Evolution in Stratified Mining of Shallow Buried High-Gas-Thick Coal Seam by Similarity Simulation by Qin Guangpeng, Cao Jing, Wang Chao, Wu Shuo, Zhai Minghua

“…The main coal seam thickness of Rujigou Coal Mine exceeds 20 m, due to the high gas content of the coal seam, it is prone to spontaneous combustion, and the stratified mining method is adopted. …”
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Characterizing PM2.5 Secondary Aerosols via a Fusion Strategy of Two-stage Positive Matrix Factorization and Robust Regression by Chun-Sheng Huang, Ho-Tang Liao, Chia-Yang Chen, Li-Hao Young, Ta-Chih Hsiao, Tsung-I Chou, Jyun-Min Chang, Kuan-Lin Lai, Chang-Fu Wu

“…The results from the fusion model showed that the majority of secondary aerosols (sum of secondary aerosol-related species = 2.67 µg m−3) within three hours were mainly contributed by oil combustion, while the largest contributor of secondary aerosols (1.65 µg m−3) over 24 hours was industry, highlighting the need for regulation of these two sources based on various temporal scales. …”
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Composition Characteristics and Potential Regions of PM2.5 during Winter Haze Pollution in Typical Industrial Areas, NW-China by Liyao Guo, Chao Gu, Kaiyuan Dong, Shengju Ou, Xueyan Zhao, Xinhua Wang, Zhensen Zheng, Wen Yang

“…The Positive Matrix Factorization (PMF) analysis shows that secondary particulate matter (47%), coal combustion (19%), fugitive dust (14%), industrial sources (10%) and vehicular emissions (10%) are identified as the major emission sources during winter in the K-D-W region. …”
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Influence of alcohol blend fuels on performance and noise emission in spark ignition engine by Ali Murtaza Ansari, Liaquat Ali Memon, Faheem Ahmed Solangi, Mamdouh T. Ghannam, Mohamed Y.E. Selim

“…The air-fuel equivalency ratio also rises to an amazing number because to the leaning effect of the ethanol, which makes the combustion nearly stoichiometric.…”
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Validation of SOC Estimation Using OC and EC Concentration in PM2.5 Measured at Seoul by Ha Young Yoo, Ki Ae Kim, Yong Pyo Kim, Chang Hoon Jung, Hye Jung Shin, Kwang Ju Moon, Seung Myung Park, Ji Yi Lee

“…The EC tracer method is a method of estimating the SOC value from calculating the POC by determining (OC/EC)pri which is the ratio of the measured values of OC and EC from the primary combustion source. In this study, three different approaches were applied to OC and EC concentrations in PM2.5 measured at Seoul for determining (OC/EC)pri: 1) the minimum value of OC/EC ratio during the measurement period; 2) regression analysis of OC vs. …”
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Characteristics of Chemical Composition and Particle Size Distribution from Real Coal-fired Circulating Fluidised Bed (CFB) Boiler by Xin Du, Jianhui Wu, Yingze Tian, Yufen Zhang, Baoshuang Liu, Yinchang Feng

“…Abstract The chemical component (element, ion, and carbonaceous aerosols) behaviour in particle size distributions (PSDs) was studied by determining the particulate matter (PM) emitted from the circulating fluidised-bed (CFB) combustion flue gas. Four CFB coal-fired boilers were employed in power plants. …”
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Overview of results in the application of flywheel hybrid transportation systems by Tarraf Mokhammad, V. V. Gayevskiy, Deeb Mukhammad

“…Among several typical energy storage methods, that flywheel energy storage has advantages such as high instantaneous power, high-performance and long service life, making it perfect secondary energy storage technology for traditional internal combustion engine vehicles. Although some progress has been made in the applied research of flywheel energy storage technology, there are no detailed studies at home and abroad that summarize its application in the vehicle applications. …”
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Characteristics and Health Risks of PM2.5-bound Metals in a Central City of Northern China: A One-year Observation Study by Jinhe Wang, Shuang Zhang, Xiaoguo Qiu, Kai Li, Jiarong Li, Yangang Ren, Chao Zhu, Xi Zhang

“…Four sources could be extracted using the positive matrix factorization (PMF) model, namely resuspended dust (51.9%), oil combustion (19.9%), factories (16.5%), and traffic emissions (11.7%). …”
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Fast and Slow Roasting of Alcohol- and Honey-infused Coffee Blends: A Comparative Study of PAH and N-PAH Emissions by Hsin-Chieh Kung, Chung-Hsien Hung, Kun-Hui Lin, Bo-Wun Huang, Nicholas Kiprotich Cheruiyot, Guo-Ping Chang-Chien

“…The PAH diagnostic ratios indicated that the source of PAHs in green coffee was pyrogenic in nature and more specifically, petroleum combustion. Finally, the emission factors for the fast and slow roasting of green coffee were 1.36 mg kg−1 of coffee (7.49 µg BaP-TEQ kg−1) and 0.483 mg kg−1 (1.35 µg BaP-TEQ kg−1), respectively. …”
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Particle Size-Dependent Monthly Variation of Pollution Load, Ecological Risk, and Sources of Heavy Metals in Road Dust in Beijing, China by Cong Men, Donghui Li, Yunqi Jing, Ke Xiong, Jiayao Liu, Shikun Cheng, Zifu Li

“…Wavelet analysis indicated that traffic exhaust showed periodicities of 5–8 and 10–13 months. Fuel combustion displayed the strongest periodicity of 12–15 months, peaking in winter.…”
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Multi-Classification Using YOLOv11 and Hybrid YOLO11n-MobileNet Models: A Fire Classes Case Study by Eman H. Alkhammash

“…Fires are classified into five types: A, B, C, D, and F/K, according to the components involved in combustion. Recognizing fire classes is critical, since each kind demands a unique suppression approach. …”
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Ambient PM2.5 Temporal Variation and Source Apportionment in Mbarara, Uganda by Silver Onyango, Crystal M. North, Hatem A. Ellaithy, Paul Tumwesigye, Choong-Min Kang, Vasileios Matthaios, Martin Mukama, Nuriat Nambogo, J. Mikhail Wolfson, Stephen Ferguson, Stephen Asiimwe, Lynn Atuyambe, Data Santorino, David C. Christiani, Petros Koutrakis

“…In Mbarara, the six main ambient PM2.5 sources identified included (in order of abundance): traffic-related, biomass and secondary aerosols, industry and metallurgy, heavy oil and fuel combustion, fine soil, and salt aerosol. Our findings confirm that air quality in southwestern Uganda is unsafe and that mitigation efforts are urgently needed. …”
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A Review of the Effects of Major Atmospheric Pollutants on Pollen Grains, Pollen Content, and Allergenicity by Hélène Sénéchal, Nicolas Visez, Denis Charpin, Youcef Shahali, Gabriel Peltre, Jean-Philippe Biolley, Franck Lhuissier, Rémy Couderc, Ohri Yamada, Audrey Malrat-Domenge, Nhân Pham-Thi, Pascal Poncet, Jean-Pierre Sutra

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Experimental Study of Single Expansion Ramp Nozzle Performance Using Pitot Pressure and Static Pressure Measurements by Sergio Nicolas Pachón Laitón, João Felipe de Araujo Martos, Israel da Silveira Rego, George Santos Marinho, Paulo Gilberto de Paula Toro

“…Pitot and pressure measurements inside the combustion chamber show nonuniform flow condition as expected due to side wall compression and boundary layer. …”
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Characteristics and Source-specific Health Risks of Ambient PM2.5-bound PAHs in an Urban City of Northern Taiwan by Yu-Chieh Ting, Chun-Hung Ku, Yu-Xuan Zou, Kai-Hsien Chi, Jhy-Charm Soo, Chin-Yu Hsu, Yu-Cheng Chen

“…Traffic emissions (31.3%) were identified as the predominant contributor to ambient PM2.5-bound PAHs, followed by industrial emissions (29.2%), evaporated/unburned oil (22.3%), and biomass/coal combustion (17.1%). Apart from the local sources, PSCF-derived results showed that emissions from industrial activities in northeast China and shipping around the Yellow Sea and East China Sea could affect the PAHs in the study area. …”
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The Impact of Lockdown on Air Quality in Pakistan during the COVID-19 Pandemic Inferred from the Multi-sensor Remote Sensed Data by Rehana Khan, Kanike Raghavendra Kumar, Tianliang Zhao

“…This is attributed to the limited transportation and control action plans of industrial activities including combustion sources taken by the Government of Pakistan for the DLP-2020 phase. …”
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Spatiotemporal Variations of Particulate Matter and their Association with Criteria Pollutants and Meteorology in Malaysia by Anis Asma Ahmad Mohtar, Mohd Talib Latif, Doreena Dominick, Maggie Chel Gee Ooi, Azliyana Azhari, Nor Hafizah Baharudin, Norfazrin Mohd Hanif, Jing Xiang Chung, Liew Juneng

“…The PCA analysis indicates that the major sources leading to the formation of particulate matter are from the contribution of secondary aerosols and combustion-related sources. The ratio of PM2.5 to PM10 ranged between 0.51 and 0.76 nationwide with the highest mean recorded in the central region (0.72). …”
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Impacto sobre el cambio climático del ciclo de vida de las tarimas de madera elaboradas en la región Huetar Norte de Costa Rica by John Solano Salmerón, William Fonseca González, Sebastián Ugalde Alfaro, Federico Alice Guier

“…En ambos casos, la combustión de diésel asociada al transporte de madera rolliza fue la etapa más intensa en emisiones, libera cerca de 1.61 kg CO2-eq tarima-1 y 43.22 kg CO2-eq m-3. …”
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The scope of application of additive technologies by the method of plasma surfacing in the manufacture of aircraft engines by Konstantin Balushok, Sergey Chigileychik

“…For heat-resistant nickel alloys, these are parts included in nozzle devices, heat pipes and combustion chambers. For titanium alloys, these are parts included in the body. …”
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Harnessing the Dual photocatalytic and electrochemical capabilities of pure and Ni-Doped MgO nanostructures for diclofenac detection by V. Bhoomika, K.T. Monalisa, Syed Khasim, T.M. Sharanakuamr, C.R. Ravikumar, N. Basavaraju, T.R. Shashi Shekhar, H.C. Ananda Murthy, K.U. Aravind

“…A pure MgO and MgO doped with 2, 4, 6, and 8 mol% of NiOnanoparticles (NPs)were prepared using the solution combustion technique.Several spectral techniques were used to characterize the synthesizedNPs.The XRD analysis revealed theaverage particle size of theMgO-infused NiO nanomaterialwas ranging between 16.28 and 71.26 nm.A distinct plate-like or slice-like quality to the morphology was observed during the SEM analysis. …”
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