Metallic aluminum (Al) is of interest as a reducing agent because of its low standard reduction potential. However, its surface is invariably covered with a dense aluminum oxide film, which prevents its effective use as a reducing agent in wet-chemical synthesis. Pitting corrosion, known as an undesired reaction destroying Al and is enhanced by anions such as F⁻, Cl⁻, and Br⁻ in aqueous solutio...

PURPOSE This study evaluates the extent to which bilingual children produce the same or overlapping responses on tasks assessing semantic skills in each of their languages and whether classification analysis based on monolingual or conceptual scoring can accurately classify the semantic development of typically developing (TD) bilingual children. METHOD In Study 1, 55 TD children (ages 4;0 [y...

This paper analyzes the impact of biased beliefs on the structure of informational equilibria in classical self-selection models. Using the intuitive insurance market example of Rothschild-Stiglitz (1976) I show that biases of high-risk individuals have fundamentally different effects on equilibrium contracts than biases of low-risk individuals. Whereas equilibrium contracts of both groups are ...

Hydrogen fuel cell vehicles are one promising vehicle technology for reducing the long-term environmental and energy-use impacts of personal vehicle use. Depending on how the hydrogen is produced, these vehicles can have very low emissions of air pollutants and greenhouse gases while also avoiding the use of petroleum. This paper reports the findings of real-world research conducted by the Univ...

This study reveals the effect of TiB₂ particles on the mechanical and tribological properties of Fe₃Al-TiB₂ composite coatings against an alumina counterpart. The feedstock was produced by milling Fe₃Al and TiB₂ powders in a high energy ball mill. The high-velocity oxy-fuel (HVOF) technique was used to deposit the feedstock powder on a steel substrate. The effect of TiB₂ addition on mechanical ...

INTRODUCTION Suicide is one of the most prominent problems in health care system in current Iran. It could be impacted by various factors such as social, economic, individual and so on. Researchers show that socio-economic factors and suicide has significantly related. The people in low social class may more engage with social problems than higher social class. They may confront to problems suc...

Through joined two sensitive methods solvation and cloud point extraction separated and determined micro amount of Ce(III) from aqueous solutions by using organic reagent 2,4-Dimethyl pentan-3-one (2,4-DMP) as extractant and non-ionic surfactant 1% TritonX-100 , the experimental study shows the solvation species of Ce+3 extracted into cloud point layer (CPL) have a wavelength for maximum absorb...

arth's climate is greatly influenced by carbon dioxide conE centrations in the atmosphere, which have increased by approximately 25% since the dawning of the Industrial Revolution, when fossi l fuel combustion accelerated greatly (IPCC 1990). Another important anthropogenic source of atmospheric carbon is associated with deforestation, especially in primary forests, which can store large amount...

Dipl.-Ing. Stefan Hoffmann is in charge of Team Management for the Advanced Diesel Combustion Development Group at the Hyundai Motor Europe Technical Center GmbH in Rüsselsheim (Germany). Dipl.-Ing. Michael Schrott is Senior Engineer in charge of Development Projects for Diesel Engine Combustion at the Hyundai Motor Europe Technical Center GmbH in Rüsselsheim (Germany). Dipl.-Ing. Thorsten Hube...