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The Effect of Cobalt Oxide Nanoparticles on Improving the Quality of Computerized Tomography (CT) Scan Medical Imaging [PDF]
Iranian Journal of Medical Physics, 2022 Introduction: Sometimes, a patient receives a poor quality medical image from a medical imaging center. Which the doctor orders to re-image with a drug contrast media agent. At this time, practical action is challenging to provide a proper image.
Mohamdreza Armanmehr +3 more
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Updated checklist of Azores Chondrichthyes (Vertebrata: Gnathostomata) [PDF]
Biodiversity Data Journal, 2021 Several lists of marine fish from the Azores were published in the past. Most of those publications are difficult to access on line and several were not published in peer reviewed journals.This checklist updates all the chondrichthyan records for the ...
Luís Barcelos +2 more
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Impacts of trophy collection and commercial fisheries on sawfishes in Queensland, Australia
Endangered Species Research, 2023 Globally, populations of sawfishes (Batoidea: Pristidae) have declined due to directed fishing and bycatch. Before international trade protection, sawfish rostra were often collected as trophies, and sawfish fins could fetch some of the highest prices in
BE Wueringer, VN Biskis, GA Pinkus
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Animals, 2023 Introduction: Elasmobranchs currently constitute an important part of the animal collection of many aquariums worldwide. Their maintenance under human care has allowed us to describe and identify new pathogens and diseases affecting them, as well as to ...
Daniela Cañizares-Cooz +5 more
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Frontiers in Marine Science, 2021 Chondrichthyes, an ancient and diverse class of vertebrates, are crucial to the health of marine ecosystems. Excessive demand for chondrichthyan products has increased fishing pressure, threatening ∼30% of species with extinction in recent decades. India
Shaili Johri +10 more
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Study of γ-ray energy losses in the ionic crystalsusingMonte Carlo code [PDF]
Kirkuk Journal of Science, 2015 In this paper, measurements were carriedout of thecalculated attenuation of the ranges gamma rays energy(279,356,479,662) KeV and using radioactive sources (Hg203, Ba133, W189, Cs137).
Abdulhadi M. Ghelab +2 more
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Fast ray tracing by ray classification [PDF]
ACM SIGGRAPH Computer Graphics, 1987 We describe a new approach to ray tracing which drastically reduces the number of ray-object and ray-bounds intersection calculations by means of 5-dimensional space subdivision. Collections of rays originating from a common 3D rectangular volume and directed through a 2D solid angle are represented as hypercubes in 5-space.
James Arvo, David Blair Kirk
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Portuguese Artisanal Fishers’ Knowledge About Elasmobranchs—A Case Study
Frontiers in Marine Science, 2021 The high economic value of fisheries was historically associated to commercial teleost fishes. Since the 1970s, despite some elasmobranchs becoming an important target or a bycatch, relatively little research has been carried out on this group because of
Priscila M. Silva +6 more
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Geofísica Internacional, 1988 Se estudia el comportamiento del espectro de potencia de las fluctuaciones en la intensidad de los rayos cósmicos para frecuencias menores de 10-4Hz, determinado a partir de las observaciones en superficie de las componentes nucleónica y de ionización ...
O. V. Gulinsky +12 more
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