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An improved algorithm for mapping burnt areas in the Mediterranean forest landscape of Morocco

Journal of Forestry Research 2019年第3期30卷 981-992页

作者： Issameddine Zidane Rachid Lhissou Abdelali Bouli Mustapha Mabrouki Environment and Valorisation of Agro-resource Laboratory Faculty of Science and TechnologySultan Moulay Slimane UniversityB.O.523Beni MellalMorocco Team of Remote Sensing and GIS Applied to Geosciences and Environment Faculty of Science and TechnologySultan Moulay Slimane UniversityB.O.523Beni MellalMorocco Industrial Engineering Laboratory Faculty of Science and TechnologySultan Moulay Slimane University B.O.523Beni MellalMorocco

The identification of burnt forests and their monitoring provide essential information for the suitable management and conservation of these ecosystems. This research focuses on the use of remote sensing with MODIS sensor data in a Mediterranean environment, precisely in the Rif region known for its high occurrence of forest fires and the largest burnt areas in Morocco. It mapped the burnt areas during the summer of 2016 using spectral indices from MODIS images, namely the Normalized Burn Ratio (NBR) and the burnt Area Index for MODIS (BAIM). Two field surveys were used to calibrate spectral indices and validate the maps. First, a monotemporal analysis using a single pre-fire image determined the appropriate threshold of the spectral indices (BAIM and NBR) for burn detecting. Secondly, a multitemporal method was applied based on dBAIM and dNBR images which represented pre-fire and postfire differences of the BAIM and NBR images, respectively. The results show that separate use of monotemporal postfire and multitemporal methods produced an overestimation of the burnt areas. Finally, we propose a new algorithm combining both methods for burnt area mapping that we name burnt Area Algorithm. MCD45A1 and MCD64A1 MODIS burnt area products were compared to the proposed algorithm. Validation of the estimated burnt areas using reference data of the Moroccan High Commission for Water, Forests and Fight against Desertification showed satisfactory results using the proposed algorithm, with a determination coefficient of 0.68 and a root mean square error of 44.0 ha.

关键词： burnt forest mapping Threshold MODIS MCD45A1 MCD64A1 Spectral indices Morocco

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Disaster victim identification operations with fragmented,burnt,or commingled remains:experience-based recommendations

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Forensic Sciences Research 2020年第3期5卷 191-201页

作者： Hans H.de Boer Julie Roberts Tania Delabarde Amy Z.Mundorff Soren Blau Department of Forensic Medicine Netherlands Forensic InstituteThe HagueThe Netherlands Department of Pathology Amsterdam UMCUniversity of AmsterdamThe Netherlands Faculty of Science School of Biological and Environmental SciencesLiverpool John Moores UniversityLiverpoolUK Principal Forensic Services Ltd BromleyUK Institut Medico-Legal de Paris ParisFrance Universite de Paris BABELCNRSParisFrance Department of Anthropology University of TennesseeKnoxvilleTNUSA Department of Forensic Services Victorian Institute of Forensic MedicineMelbourneAustralia Department of Forensic Medicine Monash UniversityMelbourneAustralia

Human-made and natural disasters can result in severely fragmented,compromised,and commingled human *** related disaster victim identification(DVI)operations are invariably challenging,with the state of the remains potentially precluding some *** involved in these DVI operations will routinely face logistical,practical,and ethical *** review provides information and guidance derived from firsthand experiences to individuals tasked with managing DVI operations with fragmented human *** outline several key issues that should be addressed during disaster preparedness planning and at the outset of an operation,when incident-specific strategies are *** challenges during recovery and examination of fragmented remains are addressed,highlighting the importance of experienced specialists at the scene and in the *** sample selection and sampling techniques are reviewed,as well as downstream effects of commingling and contamination,which can complicate reconciliation and emphasise the need for rigorous quality *** also touch on issues that may arise during communication with *** recommendations are provided,they are not intended as proscriptive policy but rather as an addition to the general recommendations given in the International Criminal Police Organization(INTERPOL)DVI Guide,to inform preparative discussions between government officials,judiciary,police,and forensic specialists.

关键词： Forensic sciences forensic anthropology DVI fragmented human remains burnt commingled DNA

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Enhanced strength in novel nanocomposites prepared by reinforcing graphene in red soil and fly ash bricks

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International Journal of Minerals,Metallurgy and Materials 2019年第10期26卷 1322-1328页

作者： Jit Sarkar D.K.Das Department of Metallurgical and Materials Engineering Indian Institute of TechnologyKharagpur 721302West BengalIndia Department of Mechanical Engineering Indian Institute of Technology(Indian School of Mines)Dhanbad 826004JharkhandIndia

Low-dimensional nanomaterials such as graphene can be used as a reinforcing agent in building materials to enhance the strength and durability. Common building materials burnt red soil bricks and fly ash bricks were reinforced with various amounts of graphene, and the effect of graphene on the strength of these newly developed nanocomposites was studied. The fly ash brick nanocomposite samples were cured as per their standard curing time, and the burnt red soil brick nanocomposite samples were merely dried in the sun instead of being subjected to the traditional heat treatment for days to achieve sufficient strength. The water absorption ability of the fly ash bricks was also discussed. The compressive strength of all of the graphene-reinforced nanocomposite samples was tested, along with that of some standard (without graphene) composite samples with the same dimensions, to evaluate the effects of the addition of various amounts of graphene on the compressive strength of the bricks.

关键词： graphene burnt red soil brick fly ash brick nanocomposites compressive strength

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Effect of fluxes on high iron and low silica sintering

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Journal of Central South University of Technology 2003年第3期10卷 177-182页

作者：朱德庆张克诚潘建范晓慧胡友名 John Clout School of Resources Processing and Bioengineering Central South UniversityChangsha 410083 China Sinter Plant Lianyuan Iron and Steel Group Co. Loudi 417000 China School of Resources Processing and Bioengineering Central South University Changsha 410083 China Division of Minerals CSIRO QLD4069 Australia

burnt lime and serpentine were incorporated into the sinter mix to improve high iron and low silica sinte-ring. Optimization of how to use burnt lime including dosage of burnt lime, moisture of sinter mix, hydrating andgranulation time was performed. Evaluations of sinter characteristics including sinter mineralogy, reducibility, lowtemperature reduction degradation, softening and melting down properties were carried out. Compared with the re-sults of traditional process in base case, the tumbling index (TI) is increased by 1.53%-2.33% through proportio-ning high ratio of burnt lime or adding serpentine in the sinter mix. It is shown that effective granulation, better per-meability and improved high temperature reactivity in the sinter bed are achieved, resulting in an increase in 3.13 %- 5.10% calcium ferrite occurring in acicular and columnar shape and decrease in glass phase, and with the reduc-ibility index(RI) being increased by 1.65%- 3.25%.

关键词： high iron and low silica sintering mineralogy permeability burnt lime serpentine

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WORLD

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Beijing Review 2019年第20期62卷 8-9页

RUSSIA The burnt fuselage of an Aeroflot SSJ-100 passenger plane is seen on the tarmac at Sheremetyevo International Airport in Moscow on May 6. Forty-one deaths were reported after the plane caught fire before making... 详细信息

关键词： RUSSIA The burnt fuselage passenger plane emergency landing

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