Results 11 to 20 of about 4,492,831 (248)

Development of Structural Steel Containing 3÷5 wt% Al with Microlaminated Microstructure

open access: yesArchives of Metallurgy and Materials, 2017
The aim of this work was to develop basic parameters of hot rolling and controlled cooling technology allowing to obtain the microlaminated (lamellar) microstructure in a lean-alloy structural steel containing 3÷5 wt % Al. Thermo-mechanical rolling tests
Garbarz B.   +2 more
doaj   +1 more source

Textbooks for K-12 Astronomy [PDF]

open access: yesHighlights of Astronomy, 2005
AbstractI report on American textbooks for kindergarten through highschool grades. Middle school, up through approximate age 15, is the last time American students are required to take science, and I provide statistics on the narrowing of the funnel containing those taking physics. I describe some recent curriculum and standards projects, and I discuss
openaire   +1 more source

Analysis of the Status and Influencing Factors of Online Learning

open access: yesCanadian Journal of Learning and Technology, 2022
During the COVID-19 prevention and control period, large-scale online education was the largest digital transformation practice in education in human history. This study launched a questionnaire survey on primary and high school students. The survey was
Jiaju He, Hong Zhao, Fei Jiang
doaj   +1 more source

Extracellular Phytase Production by the Wine Yeast S. cerevisiae (Finarome Strain) during Submerged Fermentation

open access: yesMolecules, 2018
One of the key steps in the production of phytases of microbial origin is selection of culture parameters, followed by isolation of the enzyme and evaluation of its catalytic activity. It was found that conditions for S.
Grzegorz Kłosowski   +2 more
doaj   +1 more source

Superior Strength of Austenitic Steel Produced by Combined Processing, including Equal-Channel Angular Pressing and Rolling

open access: yesMetals, 2016
Enhancement in the strength of austenitic steels with a small content of carbon can be achieved by a limited number of methods, among which is ultrafine-grained (UFG) structure formation. This method is especially efficient with the use of severe plastic
Marina V. Karavaeva   +4 more
doaj   +1 more source

Models and Algorithms for Automatic Labelling of Unstructured Texts (Text Tagging)

open access: yesProceedings of the International Conference on Applied Innovations in IT, 2021
The article discusses the task of automatic labelling of texts to improve the efficiency of processing unstructured text data. An overview of existing software products for solving the problem is given, showing the need to develop its own solution ...
Gyuzel Shakhmametova   +1 more
doaj   +1 more source

Study of the Combined Severe Plastic Deformation Techniques Applied to Produce Contact Wire for High-Speed Railway Lines

open access: yesMetals, 2020
This work considers the development and the application of combined severe plastic deformation (SPD) techniques to produce contact wire with an enhanced complex of physical, mechanical, and service properties used for high-speed railway lines.
Rashid N. Asfandiyarov   +2 more
doaj   +1 more source

Influence of HPT Deformation on the Structure and Properties of Amorphous Alloys

open access: yesMetals, 2020
Recent studies showed that structural changes in amorphous alloys under high pressure torsion (HPT) are determined by their chemical composition and processing regimes.
Dmitry Gunderov, Vasily Astanin
doaj   +1 more source

AI K–12 Education Service [PDF]

open access: yesKI - Künstliche Intelligenz, 2021
AbstractThis article provides an overview of relevant scientific venues, journals, projects and resources in the context of AI K-12 education.
Martin Kandlhofer, Gerald Steinbauer
openaire   +1 more source

Researching and developing remote teaching in mother tongue tuition

open access: yesEducation in the North, 2020
This feature describes an ongoing research and development project (2019-2022) on remote mother tongue teaching in Sweden. The project is based on the collaboration between the Department of Education, Umeå University, and the Competence Centre for ...
Fanny Pettersson, Peter Hjelm
doaj   +1 more source

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