Results 61 to 70 of about 318,231 (301)

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler   +9 more
wiley   +1 more source

The Increase of the Size of the Shadow Economy of 18 OECD Countries: Some Preliminary Explanations [PDF]

open access: yes
The latest empirical results of the size of the shadow economy in 18 OECD countries are presented, using the currency demand approach to calculate the shadow economy over time.
Friedrich Schneider
core   +3 more sources

Interaction of Ladle Slag With Varying SiO2 Content and Recyclate‐Based MgO–C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
Ladle slags (CaO/Al2O3 = 1) with 1–20 wt% SiO2 were investigated in contact with industrial MgO–C refractories fabricated from fresh magnesia and 50 wt% recyclate. The sessile drop method at 1600°C reveals intensive gas formation, delayed slag infiltration in recyclate‐based samples, and, under high‐SiO2 slag, formation of a dense MgAl2O4‐rich ...
Anton Yehorov   +6 more
wiley   +1 more source

Financial Development and Shadow Economy in European Union Transition Economies [PDF]

open access: yesManaging Global Transitions, 2016
The shadow economy has been a serious problem with varying dimensions in all the income group economies and has significant adverse effects on the development of economies.
Yilmaz Bayar, Omer Faruk Ozturk
doaj  

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

The shadow economy of Armenia: size, causes and consequences [PDF]

open access: yes, 2005
Over the past decade or so the problems caused by the shadow economy have become a major concern for policy makers, researchers, as well as the donor community in Armenia.
Tunyan, Bagrat
core   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han   +5 more
wiley   +1 more source

Identification of the shadow economy determinants for the Eurozone member states: application of the MIMIC model

open access: yesJournal of Business Economics and Management, 2018
This article is aimed at identification of the shadow economy’s causal factors and indicators in 19 Eurozone member states over the period from 2005 to 2016.
Rita Remeikienė   +3 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

Shadow Economy – Bibliometric Mapping

open access: yesLUMEN Proceedings, 2020
This study’s main objective is reviewing the scientific terminology used in connection and with regard to the shadow economy. In subsidiary, the current research establishes the most explored and researched subject areas in connection with shadow economy and it compares different terms and phrases used in research studies on shadow economy, underground
Cristina Timofte (Coca), Dan-Andrei Coca
openaire   +2 more sources

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