Research of the Russian companies’ potential and the success factors

The article presents the results of the key factors of the chemical and petrochemical companies’ success which are in the “Expert-400” rating. This rating includes the most successful companies with highest yields, profits and efficiency. While researching, the grouping of companies according to their industry affiliation to the chemical and petrochemical industry was done. The number of companies affiliated to the selected industry rated as the best ones is 14 or 3% from the total number. One company of each form of ownership to reveal the main regularities and key success factors of the companies of the given industry are taken to be analyzed. The success factors have been identified and researching prospects in the given field have been formulated for a company of each form of ownership.peer-reviewe

Genomics of alkaliphiles

Alkalinicity presents a challenge for life due to a “reversed” proton gradient that is unfavourable to many bioenergetic processes across the membranes of microorganisms. Despite this, many bacteria, archaea, and eukaryotes, collectively termed alkaliphiles, are adapted to life in alkaline ecosystems and are of great scientific and biotechnological interest due to their niche specialization and ability to produce highly stable enzymes. Advances in next-generation sequencing technologies have propelled not only the genomic characterization of many alkaliphilic microorganisms that have been isolated from nature alkaline sources but also our understanding of the functional relationships between different taxa in microbial communities living in these ecosystems. In this review, we discuss the genetics and molecular biology of alkaliphiles from an “omics” point of view, focusing on how metagenomics and transcriptomics have contributed to our understanding of these extremophiles.https://link.springer.com/bookseries/10hj2021BiochemistryGeneticsMicrobiology and Plant Patholog

Retracted Article: Intelligent Automation of Student Performance Assessment based on Cloud Services

This article has been retracted by the iJET editorial team: The article on this page has been associated with fraudulent publication practices after its publication in iJET. The work could be linked to a criminal paper mill selling authorships and articles for publication in several online journals to paying customers. The iJET editorial team was initially informed about the paper mill’s fraudulent activities by Dr. Perron (University of Michigan) and his team on 08/03/2021. The investigation results were published on RetractionWatch under https://retractionwatch.com/author/perronetal/ on 12/20/2021. Based on the evidence provided by Dr. Perron and his team, the iJET editorial team considerably questions the paper’s scientific integrity and legitimacy as part of the scientific body. Finally, iJET decided to retract the paper. Neither iJET, Online-Journals.org, nor IAOE stands in any contact with the paper mill’s fraudulent activities. We condemn such procedures and dissociate ourselves from any person or entity, which is knowingly or unknowingly part of it

Covid-19 Effect on the Assessment of the Use of Smartphone Apps in STEM Learning

The purpose of the study is to analyze the impact of the Covid-changed learning environment on the assessment of mobile applications for learning STEM disciplines. The study presents the results of the surveys of teachers (n = 38, age 32-52) and students (n = 188, age 19-21) of Sechenov First Moscow State Medical University and Kazan Federal University. The participants evaluated the effectiveness of mobile applications designed to study STEM disciplines. A thorough analysis of three apps dedicated to STEM learning and nine auxiliary niche apps allowed revealing their pros and cons, in particular, expanded student opportunities, the ability to study while staying in the Russian Federation, the availability of a Russian-language version, and the ability to make an appointment (for teachers or students). Due to the increased use of mobile devices by young people, the time frame for completing lessons and motivation to accomplish assignments (tasks related to engineering, solving problems in a notebook, taking notes, completing assignments on the device and in the notebook) were also defined as important. The analysis of mobile apps in the context of distance and blended learning unveiled that, in addition to the well-known criteria, the assessment of such learning means should also make allowance for the possibility to complete tasks outside the digital space, screen time reduction capacity, and accessibility for users. Learning based on a mobile application must be planned to encourage student thinking, the desire to obtain good results, and involvement in project activity

Rig Test of Diesel Combustion Chamber with Piston Coated by Optically Simulated Semitransparent PSZ-Ceramic

Running efficiency of LHR diesel has been confirmed by mean of well-known types of heat-insulating (HICs) or thermal barrier (TBCs) coatings. These materials are considered as a semitransparent media SHICs (STBCs) in the form of an ensemble of diffraction objects, forming own thermoradiative fields under the scattering theory laws. This problem is relevant for a diesel with combustion chamber (CC) in which intensive IR radiation reaches ~50% of total thermal flux. The authors indicate that predetermined selection of optical and thermoradiative parameters in the same spectrum for coatings (due to specific structural composition and porosity) can change their temperature fields inside its subsurface zone and hence in the CC gas volume. Previous author's research of optical parameters for ceramic semitransparent materials allowed offering SHIC (STBC) samples for rig testings. Optically simulated absorption and scattering indices for SHICs fix their thermoradiative fields which determine the formation of optimal temperature profile inside ceramic coatings at the type conditions of diesel CC operation. A number of the latest rig testings of diesel engines with coated piston by PSZ-ceramics were studied from the point of influence on the radiant heat exchange by semitransparent coatings deposited on the CC internal surfaces. Analysis and reasons of reducing the specific fuel consumption at high speeds using SHICs (STBCs) were carried out. In view of the known literature data on rig testings of LHR diesel and also experimentally measured optical parameters of semitransparent and opaque coatings it became possible for the first time to calculate correctly its temperature fields. Subsurface heating of semitransparent ceramic coats specifies the possibility of thermoregulation for the piston surface with SHICs (by varying its structure) in contrast to the use of opaque HICs. Such PSZ-ceramics were recommended for application and improvement of operating conditions of diesel CC piston protected by means of coats with selected optical and thermal physical characteristics. The usage of the suggested methodology in contemporary industry enables to intensify significantly R&D for LHR diesel and to ensure advanced management of its combustion-exhaust system temperatures, the required regime of thermoregulation for heat-insulated CC wall surfaces and generation reduction of the most toxic NOx. Copyright © 2017 SAE International

Rig Test of Diesel Combustion Chamber with Piston Coated by Optically Simulated Semitransparent PSZ-Ceramic

Running efficiency of LHR diesel has been confirmed by mean of well-known types of heat-insulating (HICs) or thermal barrier (TBCs) coatings. These materials are considered as a semitransparent media SHICs (STBCs) in the form of an ensemble of diffraction objects, forming own thermoradiative fields under the scattering theory laws. This problem is relevant for a diesel with combustion chamber (CC) in which intensive IR radiation reaches ~50% of total thermal flux. The authors indicate that predetermined selection of optical and thermoradiative parameters in the same spectrum for coatings (due to specific structural composition and porosity) can change their temperature fields inside its subsurface zone and hence in the CC gas volume. Previous author's research of optical parameters for ceramic semitransparent materials allowed offering SHIC (STBC) samples for rig testings. Optically simulated absorption and scattering indices for SHICs fix their thermoradiative fields which determine the formation of optimal temperature profile inside ceramic coatings at the type conditions of diesel CC operation. A number of the latest rig testings of diesel engines with coated piston by PSZ-ceramics were studied from the point of influence on the radiant heat exchange by semitransparent coatings deposited on the CC internal surfaces. Analysis and reasons of reducing the specific fuel consumption at high speeds using SHICs (STBCs) were carried out. In view of the known literature data on rig testings of LHR diesel and also experimentally measured optical parameters of semitransparent and opaque coatings it became possible for the first time to calculate correctly its temperature fields. Subsurface heating of semitransparent ceramic coats specifies the possibility of thermoregulation for the piston surface with SHICs (by varying its structure) in contrast to the use of opaque HICs. Such PSZ-ceramics were recommended for application and improvement of operating conditions of diesel CC piston protected by means of coats with selected optical and thermal physical characteristics. The usage of the suggested methodology in contemporary industry enables to intensify significantly R&D for LHR diesel and to ensure advanced management of its combustion-exhaust system temperatures, the required regime of thermoregulation for heat-insulated CC wall surfaces and generation reduction of the most toxic NOx. Copyright © 2017 SAE International