Results 121 to 130 of about 54,161 (308)

POPULATION MOBILITY ACROSS REGIONS AND COUNTIES DURING DEMOCRACY IN ROMANIA [PDF]

open access: yesAnnals of the University of Oradea: Economic Science, 2012
As an introduction to a more comprehensive study about internal migration determinants, this paper investigates on the main trends in the evolution of this phenomenon within Romanian borders for the last two decades, 1990-2010.
Bunea Daniela
doaj  

Health Profile and Health Care Access of Mexican Migration Flows Traversing the Northern Border of Mexico. [PDF]

open access: yesMed Care, 2020
Martinez-Donate AP   +7 more
europepmc   +1 more source

Mixed migration flows and the changing dynamics of migration research

open access: yes, 2020
This issue features a selection of papers presented at the international workshop titled “Mixed Migration Flows and the Changing Dynamics of Migration Research” which was held in Istanbul on December 15, 2018 as the first activity of an international workshop series on mixed migration flows and trends.
openaire   +2 more sources

Time‐Dependent Oxidation and Scale Evolution of a Wrought Co/Ni‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study shows how a new wrought Co/Ni‐based superalloy resists oxidation at 800 ∘$^\circ$C. The oxide scale changes from rough, fast‐growing spinel to a dense, protective chromia–alumina layer. Atom probe analysis reveals tiny refractory‐rich bubbles at the interface that mark the transition to long‐term, diffusion‐controlled protection ...
Cameron Crabb   +6 more
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Migration, Trade and FDI in Mexico [PDF]

open access: yes
Part of the rationale for NAFTA was that it would increase trade and FDI flows, creating jobs and reducing migration to the US. Since poor data on illegal flows to the US makes direct measurement difficult, this paper instead evaluates the mechanism ...
William Maloney, Patricio Aroca
core  

Symbolic Regression and Multi‐Objective Optimization of the Flory–Huggins Interaction Parameter for Hydrogels

open access: yesAdvanced Engineering Materials, EarlyView.
We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang   +2 more
wiley   +1 more source

District-level Spatial Analysis of Migration Flows in Ghana: Determinants and Implications for Policy

open access: yes
The present study investigates the determinants of inter-district migration flows over the 1995-2000 period in Ghana. A combination of socio-economic, natural and spatial ‘district-level’ attributes are considered as potential variables explaining the ...
Tsegai, Daniel W., Le, Quang Bao
core  

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

Analysis of the temporary evolution of the Romanian migration flows abroad, on migration routes

open access: yes
This article analyses the international migration of the Romanians based on their direction, within the extent of 1990-2008. The tendencies are being examined depending on the region of origin and of destination of the migrants and also depending on the ...
Maria-Daniela Bondoc   +2 more
core  

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