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Damage and geological assessment of the 18 September 2011 M_w 6.9 earthquake in Sikkim,India using very high resolution satellite data

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Geoscience Frontiers 2015年第6期6卷 793-805页

作者： Tapas R.Martha k.babu govindharaj k.Vinod kumar National Remote Sensing Centre(NRSC) Indian Space Research Organisation(ISRO)

Post-disaster very high resolution（VHR） satellite data are potential sources to provide detailed information on damage and geological changes for a large area in a short *** this paper,we studied landslides triggered by the M_w 6.9 earthquake in Sikkim,India which occurred on 18 September 2011 using VHR data from Cartosat-1,GeoEye-1,QuickBird-2 and WorldView-2 *** the earthquake-affected area is located in mostly inaccessible Himalayan terrain,VHR data from these satellites provided a unique opportunity for quick and synoptic assessment of the *** visual change analysis technique through comparison of pre- and post-earthquake images,we assessed the damage caused by the event.A total of 123 images acquired from eight satellites,covering an area of4105 km2 were analysed and 1196 new landslides triggered by the earthquake were *** blockages and severely affected villages were also *** assessment of the terrain highlighted linear disposition of landslides along existing fault scarps,suggesting a reactivation of *** landslide inventory map prepared from VHR images also showed a good correlation with the earthquake shake *** showed that several parts of north Sikkim,particularly Mangan and Chungthang,which are close to the epicentre,were severely affected by the earthquake,and that the event-based landslide inventory map can be used in future earthquake-triggered landslide susceptibility assessment studies.

关键词： International Charter Damage Landslide Fault VHR Disaster

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3D-bioprinted tri-layered cellulose/collagen-based drug-eluting fillers for the treatment of deep tunneling wounds

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Bio-Design and Manufacturing 2024年第6期7卷 938-954页

作者： Mano govindharaj Noura Al Hashimi Soja S.Soman Jiarui Zhou Safeeya AlAwadhi Sanjairaj Vijayavenkataraman The Vijay Lab Division of EngineeringNew York University Abu DhabiAbu Dhabi 129188UAE Department of Mechanical and Aerospace Engineering Tandon School of EngineeringNew York UniversityBrooklynNY 11201USA

Tunneling wounds create passageways underneath the skin surface with varying sizes and shapes and can have twists and turns,making their treatment extremely *** wound care solutions only cater to superficial wounds,and untreated tunneling wounds pose major health *** study aims to fulfill this challenge by fabricating tunnel wound fillers(TWFs)made of natural polymers that mimic the dermal extracellular *** this study,cellulose microfibers(CMFs)derived from banana stem and fish skin-derived collagen were used to formulate bio-inks with varying CMF contents(25,50,and 75 mg).Tri-layered(CMFs,primary and secondary collagen coatings),drug-eluting(Baneocin),and cell-laden(human mesenchymal stem cells)TWFs were three-dimensional(3D)-printed and extensively *** showed the most suitable rheological properties for 3D printing at 50 mg *** Alamar Blue data showed significantly increased cell proliferation from Day 1 to Day 7,and scratch tests used to evaluate in vitro wound healing revealed that the best coverage of the wound area was achieved using CMFs in combination with collagen and ***,the TWF showed promising capability and tunability in terms of wound shape and size upon testing on a chicken tissue *** results demonstrate the tremendous potential of TWFs in treating deep tunneling wounds with unique advantages,such as patient-specific customization,good wound exudate absorption capability while releasing wound healing drugs,and the inclusion of stem cells for accelerated healing and tissue regeneration.

关键词： Bio-ink Bioprinting Cellulose Fish collagen 3D printing Tunneling wounds

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