Results 31 to 40 of about 4,195,484 (202)

On the detection of the progenitor of the type Ia supernova 2007on [PDF]

, 2008
We present new Chandra X-ray observations and detailed astrometry of the field of the type Ia supernova 2007on, for which the detection of a likely progenitor in archival Chandra data was recently reported.
Alexander, Cees Bassa, Fruchter, Gal-Yam, Giacconi, Gijs Nelemans, Gijs Roelofs, Hillebrandt, Iben, Immler, Immler, Leibundgut, Morrell, Nelemans, Nomoto, Pollas, Prestwich, Rasmus Voss, Tutukov, van den Heuvel, Voss, Voss, Webbink, Whelan   +23 more
core   +5 more sources

Hybrid Deep Learning and Sensitivity Operator-Based Algorithm for Identification of Localized Emission Sources

Mathematics, 2023
Hybrid approaches combining machine learning with traditional inverse problem solution methods represent a promising direction for the further development of inverse modeling algorithms.
Alexey Penenko, Mikhail Emelyanov, Evgeny Rusin, Erjena Tsybenova, Vasily Shablyko   +4 more
doaj   +1 more source

CNN-based fast source device identification

, 2020
Source identification is an important topic in image forensics, since it allows to trace back the origin of an image. This represents a precious information to claim intellectual property but also to reveal the authors of illicit materials. In this paper
Bestagini, Paolo, Cozzolino, Davide, Mandelli, Sara, Tubaro, Stefano, Verdoliva, Luisa   +4 more
core   +1 more source

Network infection source identification under the SIRI model [PDF]

, 2015
We study the problem of identifying a single infection source in a network under the susceptible-infected-recovered-infected (SIRI) model. We describe the infection model via a state-space model, and utilizing a state propagation approach, we derive an ...
Harilal, Athul, Hu, Wuhua, Tay, Wee Peng, Xiao, Gaoxi   +3 more
core   +1 more source

Rainwater Chemistry Reveals Air Pollution in a Karst Forest: Temporal Variations, Source Apportionment, and Implications for the Forest

Atmosphere, 2020
Temporal rainwater chemistry was used to reveal air pollution in the Maolan National Karst Forest Park (MNKFP), which is representative of the typical karst forest region of southwest China (SW China). The rainwater ions’ sources, variations, trends, and
Jie Zeng, Guilin Han
doaj   +1 more source

Source identification and quantification of particulate matter emitted from livestock houses [PDF]

, 2010
There is need to identify and quantify the contribution of different sources to airborne particulate matter (PM) emissions from animal houses. To this end, we compared the chemical and morphological characteristics of fine and coarse PM from known ...
Aarnink, A.J.A., Cambra-López, M., Hermosilla, T., Lai, T.L.H., Montero, M., Ogink, N.W.M.   +5 more
core   +2 more sources

Association between PM2.5-bound metals and pediatric respiratory health in Guangzhou: An ecological study investigating source, health risk, and effect

Frontiers in Public Health, 2023
BackgroundThe adverse effects of 2.5-μm particulate matter (PM2.5) exposure on public health have become an increasing concern worldwide. However, epidemiological findings on the effects of PM2.5-bound metals on children's respiratory health are limited ...
Yi Zheng, Sili Chen, Yuyang Chen, Jingye Li, Binhe Xu, Tongxing Shi, Tongxing Shi, Qiaoyuan Yang, Qiaoyuan Yang   +8 more
doaj   +1 more source

Chemical and Lead Isotope characterisation of First World War shrapnel balls and bullets used on the Alpine Austrian–Italian Front

Scientia Militaria, 2018
Chemical and lead isotope characterisation was carried out on shrapnel balls and bullets dating back to the First World War (WWI). These ammunitions were widely utilised in the Alpine Austrian–Italian front located in the Italian Alps.
Latterza, Vittoria , Ros, Veronica , Turetta, Clara , Gabrieli, Jacopo , Cairns, Warren R. L. , Balliana, Eleonora , Baroni, Carlo , Salvatore, Maria Cristina , Bondesan, Aldino , Brabante, Carlo   +9 more
doaj   +1 more source

Spatial–Temporal Variations, Ecological Risk Assessment, and Source Identification of Heavy Metals in the Sediments of a Shallow Eutrophic Lake, China

Toxics, 2022
The contamination of heavy metals (Pb, Cr, Hg, Cd, Ni, Cu, Zn, As, and Sb) in the sediments were investigated in Lake Yangcheng, a eutrophic lake in China.
Xiaomei Su, Hong Ling, Dan Wu, Qingju Xue, Liqiang Xie   +4 more
doaj   +1 more source

PAHs Source Identification in Sediments and Surrounding Soils of Poyang Lake in China Using Non-Negative Matrix Factorization Analysis

Land, 2022
Identifying sources of soil and sediment PAHs and apportioning their contributions are key in building effective pollution abatement strategies, especially for Poyang Lake—the largest freshwater lake in China. PAHs were detected in all the monitored soil
Chunli Chen, Huiqing Zeng, Xiaofeng Gong, Jing Li, Lingqing Wang   +4 more
doaj   +1 more source