Results 31 to 40 of about 2,586 (262)
Open Astronomy, 2015 We cast a retrospective look at the mankind’s acquaintance with minor bodies of the Solar System, at the explosive growth in their discoveries resulting from the technological progress, and at gradual understanding of the danger to our very existence ...
Rykhlova L., Bakanas E.
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Densities and porosities of meteoroids
, 2008 Using a physical theory of meteors and on the basis of the results of double-station photographic observations of meteors in Dushanbe (Tajikistan), Kiev, and Odessa (Ukraine), the mean mineralogical and bulk densities of meteoroids belonging to nine ...
P. B. Babadzhanov, G. I. Kokhirova
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Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks
Advanced Science, EarlyView.Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
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A Near-Earth Object Model Calibrated to Earth Impactors
The Astronomical JournalThe population of Earth-impacting meteoroids and their size-dependent orbital elements are key to understanding the origin of meteorites and informing planetary defense efforts. Outstanding questions include the role of collisions in depleting meteoroids
Sophie E. Deam +18 more
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Large Language Model‐Based Chatbots in Higher Education
Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.The use of large language models (LLMs) in higher education can facilitate personalized learning experiences, advance asynchronized learning, and support instructors, students, and researchers across diverse fields. The development of regulations and guidelines that address ethical and legal issues is essential to ensure safe and responsible adaptation
Defne Yigci +4 more
wiley +1 more source
Astronomy & AstrophysicsMeteor spectroscopy presents new opportunities for investigating the diversity of small Solar System bodies and capturing the real distribution of present material types. In this work, we analyzed a sample of 180 higher-resolution meteor spectra from the
Matlovič P. +12 more
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Cratering of a comet nucleus by meteoroids [PDF]
Advances in Space Research, 1999 Abstract The two-dimensional axisymmetric hydrocode model of free particles is applied to the calculation of response of a comet nucleus to a meteorite impact. The nucleus is assumed to be spherical with a radius of 1 km. It is composed of a porous granular mixture of water ice and of mineral. Initial temperature is 50 K.
Jach, Karol +7 more
openaire +2 more sources
Preliminary Results on the Gravitational Slingshot Effect and the Population of Hyperbolic Meteoroids at Earth [PDF]
, 2011 Interstellar meteoroids, solid particles arriving from outside our Solar System, are not easily distinguished from local meteoroids. A velocity above the escape velocity of the Sun is often used as an indicator of a possible interstellar origin.
Wiegert, P. A.
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Business Strategy and the Environment, EarlyView.ABSTRACT This paper investigates key barriers to the environmental, social, and economic sustainability of food quick commerce (Q‐commerce) logistics, using Iran as a representative emerging economy. This study is timely because it examines a rapidly evolving form of urban logistics in which speed, convenience, and sustainability are increasingly in ...
Seyed Hamid Hashemi Petrudi +3 more
wiley +1 more source
Current evolution of meteoroids [PDF]
, 1973 The observed mass distribution of meteoroids at 1 AU from the sun is briefly reviewed in a survey that ranges over the bulk of the mass spectrum from micrometeoroids to meteorite parent objects.
Dohnanyi, J. S.
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