Refining the Earth Orientation Parameters Onboard Spacecraft: Concept and Information Technologies

Journal of Computer and Systems Sciences International - We consider the problem of refining the evolving Earth Orientation Parameters (EOP) used during the converting from the inertial coordinate...     

Analysis of color volume of multi‐chromatic displays using gamut rings

There are claims that multi‐chromatic displays can achieve a wider color gamut by the use of additional highly saturated secondary color channels. However, there are other claims that these displays lose lightness and/or color saturation at brighter levels. These apparently divergent views have led to some controversy in the display industry and at standard setting organizations. This study examines the color gamut volume for a variety of simulated and measured multi‐chromatic (sometimes incorrectly referred to as “multi‐primary”) displays using combinations of white and/or secondary color channels, such as cyan, magenta, and yellow. Furthermore, a two‐dimensional gamut representation, referred to as “gamut rings,” is introduced to illustrate that the addition of nonprimary optical color channels to a trichromatic (RGB) display can result in a significant decrease in the chroma at higher lightness levels. The additional saturated color channels can increase the gamut volume only around their hues at darker levels. The results also confirm the validity of comparing the color light output and white light output for revealing the design trade‐offs between the high‐peak white and the color‐image brightness for multi‐chromatic displays.     

Studies on the Structure and Catalytic Properties for Heck Reaction of Troxerutin Supported Palladium Catalyst

Theoretical Foundations of Chemical Engineering - Troxerutin supported palladium (TXT-Pd) catalyst was prepared readily by using one-step synthetic method. As-fabricated TXT-Pd catalyst was...     

Drone-Based Autonomous Robot Diagnostic System for Gas and Oil Pipelines in the Arctic and Far North

A drone-based autonomous robot diagnostic system for gas and oil pipelines in the Arctic and Far North has been developed.     

Vibrational Molding of Filtering Materials Using Stainless Steel and Saponite Powders

Powder Metallurgy and Metal Ceramics - The paper describes the results of vibrational molding and proposes a process for producing a gradient filtering material from stainless steel and saponite...     

Prospects for Producing Special Cold-Resistant Economically Alloyed Nickel Ferritic Steel for Liquefied Natural Gas Storage and Transportation Vessels

Metallurgist - Ferritic steels are developed economically alloyed with nickel (up to 7%) with increased strength and low-temperature toughness for the manufacture of liquefied natural gas (LNG)...     

Characterisation of the microplasma spraying of biocompatible coating of titanium

This paper presents new results of studying the influence of parameters of microplasma spraying (MPS) of Ti wire on the structure and properties of Ti coatings. Based on the design of the experiment and the results of the SEM study, certain spraying modes were chosen to form the desired composition and structure of the Ti coating.  The dense sublayer (up to 300 µm thick) provides good adhesion to the substrate, and a porous top layer can accelerate the coated implant ingrowth with the bone.  This technology is developed for the manufacture of coated endoprosthesis implants.