Results 1 to 10 of about 1,988,983 (304)

Reconstruction of the Late Bronze Age Foundry Process in Greater Poland: Analyzes and Simulations. Case Study of Hoard from Przybysław [PDF]

open access: yesArchives of Metallurgy and Materials, 2022
One of the most interesting categories of artifacts for archaeometallurgical research includes deposits of bronze items, so-called “metallurgists hoards”.
A. Garbacz-Klempka   +7 more
doaj   +1 more source

A Glimpse into Raw Material Management in the Early Iron Age: Bronze Ingots from a Production Settlement in Wicina (Western Poland) in Archaeometallurgical Research [PDF]

open access: yesArchives of Metallurgy and Materials, 2020
Assessing the level of metallurgical and foundry technology in prehistoric times requires the examination of raw material finds, including elongated ingots, which served as semi-finished products ready for further processing.
A. Garbacz-Klempka   +2 more
doaj   +1 more source

Conjugate Natural Convection of a Hybrid Nanofluid in a Cavity Filled with Porous and Non-Newtonian Layers: The Impact of the Power Law Index

open access: yesMathematics, 2022
This study deals with the effect of the power law index on the convective heat transfer of hybrid nanofluids in a square cavity divided into three layers. The effect of a solid fluid layer is also given attention.
Mohamed Omri   +4 more
doaj   +1 more source

Characterization and comparison of as received and clinically retrieved Bio-active™ orthodontic archwires

open access: yesBiotechnology & Biotechnological Equipment, 2021
This study aimed to characterize and compare the latest generation multi-force Bio-active™ orthodontic archwires to determine if there is a change in their physicochemical and mechanical properties during orthodontic treatment.
Mirela Georgieva   +8 more
doaj   +1 more source

Assessment of long-term trends in genetic mean and variance after the introduction of genomic selection in layers: a simulation study

open access: yesFrontiers in Genetics, 2023
Nucleus-based breeding programs are characterized by intense selection that results in high genetic gain, which inevitably means reduction of genetic variation in the breeding population. Therefore, genetic variation in such breeding systems is typically
Ivan Pocrnic   +5 more
doaj   +1 more source

METHODOLOGY FOR REPORTING OF THE ENERGY AND PROTEIN TRANSFORMATION IN THE ECO-TECHNICAL CHAIN “FEED-EGG MELANGE” BY LAYING HENS THROUGH INTRODUCING OF “CLARC OF ENERGY TRANSFORMATION/CLARC OF PROTEIN DISTRIBUTION” [PDF]

open access: yesTrakia Journal of Sciences, 2020
A methodology to account for transformation of metabolizable energy and crude protein in compound feed for laying hens to energy and protein in egg melange (albumen and egg yolk) has been developed.
D. Penkov, S. Grigorova
doaj   +1 more source

Modified Bohm’s theory for abstruse measurements: application to layer depth profiling using auger spectroscopy [PDF]

open access: yesArchives of Metallurgy and Materials, 2019
Modified Bohm’s formalism was applied to solve the problem of abstruse layer depth profiles measured by the Auger electron spectroscopy technique in real physical systems.
E. Rówiński, M. Pietruszka
doaj   +1 more source

Metallurgical Slags as Traces of a 15th century Copper Smelter

open access: yesArchives of Foundry Engineering, 2017
The research focuses on assessing the metal content, mainly copper, lead, iron and also silver in metallurgical slag samples from the area where historical metallurgical industry functioned. In the smelter located in Mogiła, near Krakow (southern Poland),
Garbacz-Klempka A.   +4 more
doaj   +1 more source

The Effect of Production Parameters of Oxide Layers on Their Nanostructure, Nanomorphology, and Surface Free Energy

open access: yesApplied Sciences, 2018
Nanotechnology is currently a very promising field of materials science. One of the most recent directions of research in this field is the nanotechnology of the upper layers for applications in engineering kinematic systems.
Władysław Skoneczny   +2 more
doaj   +1 more source

Loss and enhancement of layer-selective signals in geniculostriate and corticotectal pathways of adult human amblyopia

open access: yesCell Reports, 2021
Summary: How abnormal visual experiences early in life influence human subcortical pathways is poorly understood. Using high-resolution fMRI and pathway-selective visual stimuli, we investigate the influence of amblyopia on response properties and the ...
Wen Wen   +7 more
doaj   +1 more source

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