Results 31 to 40 of about 189,894 (181)
Impact melt rocks from the Late Paleocene Hiawatha impact structure, northwest Greenland
Meteoritics &Planetary Science, Volume 58, Issue 6, Page 789-814, June 2023., 2023 Abstract Impact melt rocks formed during hypervelocity impact events are ideal for studying impact structures. Here, we describe impact melt rock samples collected proximal to the 31 km wide 58 Ma Hiawatha impact structure, northwest Greenland, which is completely covered by the Greenland Ice Sheet. The melt rocks contain diagnostic shock indicators (e.
William R. Hyde +8 more
wiley +1 more source
Meteoritics &Planetary Science, Volume 58, Issue 5, Page 722-736, May 2023., 2023 Abstract The Dhala structure in north‐central India is a confirmed complex impact structure of Paleoproterozoic age. The presence of an extraterrestrial component in impactites from the Dhala structure was recognized by geochemical analyses of highly siderophile elements and Os isotopic compositions; however, the impactor type has remained unidentified.
Aryavart Anand +3 more
wiley +1 more source
Archaeometry, Volume 65, Issue 1, Page 36-48, February 2023., 2023 Abstract Separating two or more aspects of an object via cutting was likely an important factor in the origin and evolution of flaked stone technology. In recent years experiments have demonstrated that several stone tool attributes can influence different kinds of cutting behaviour: slicing, cleaving, scraping, sawing, drilling, piercing and abrading.
Somaye Khaksar +3 more
wiley +1 more source
Geoarchaeology, Volume 38, Issue 1, Page 35-56, January/February 2023., 2023 Abstract The effects of the Younger Dryas (YD) fluctuation on Late Pleistocene hunter‐gatherers' settlement and subsistence systems in the southern Alps are poorly known. This is primarily due to the scarcity of archaeological sites dating from the YD, in contrast with the extensive evidence available from the lateglacial interstadial and the early ...
Diego E. Angelucci +2 more
wiley +1 more source
Pulmonary bullet embolism – a safe treatment strategy of a potentially fatal injury: a case report [PDF]
, 2009 This is an Open Access article distributed under the terms of the Creative Commons Attribution ...
Ali M Hassan +9 more
core +4 more sources
Prognostic factors of intracranial purulent-septic complications of combat-related gunshot penetrating skull and brain wounds. [PDF]
, 2019 Purpose – to analyze the structure of intracranial purulent-septic complications (IPSC), determine the factors influencing development of purulent-septic complications in patients with combat-related gunshot penetrating skull and brain wounds (CRPSBW ...
Dzyak, L. A. +4 more
core +8 more sources
Advanced Science, Volume 9, Issue 26, September 15, 2022., 2022 In this study, ionic liquids based polymer composites and their exceptional physicochemical characteristics and their capability to bond by analytes via multiple interchanges, such as π–π, hydrogen interaction, ion‐exchange, electrostatic, and dipolar relations, are discussed in detail.
Kirti Mishra +6 more
wiley +1 more source
Xylem embolism and bubble formation during freezing suggest complex dynamics of pressure-tension in Betula pendula stems [PDF]
, 2022 Freeze-thaw-induced embolism is a key limiting factor for perennial plants in frost-exposed environments. Gas bubbles are formed during freezing and expand during thawing resulting in xylem embolism. However, when water freezes, its volume increases by 9%, generating local pressures, which can affect the formation of bubbles.
arxiv +1 more source
Gunshot bullet embolus with pellet migration from the left brachiocephalic vein to the right ventricle: a case report [PDF]
, 2010 We report the case of a 16 year old male who was the victim of a drive by shooting sustaining the rare but recognised complication of cardiovascular bullet embolism.
Greaves, Nicholas
core +3 more sources
Foreign Intravascular Object Embolization and Migration: Bullets, Catheters, Wires, Stents, Filters, and More [PDF]
, 2017 Foreign intravascular object embolization (FIOE) is an important, yet underreported occurrence that has been described in a variety of settings, from penetrating trauma to intravascular procedures. In this chapter, the authors will review the most common
Dingley, Stephen D. +7 more
core +2 more sources