منابع مشابه
Light Conduction Capability of Different Light-Transmitting FRC Posts
Introduction: Application of light transmitting posts to restore greatly damaged endodontically treated teeth has been increased. It is suspected that light intensity decreases as it passes throughout different materials. This can reduce the degree of conversion required for adequate bond strength throughout the length of these posts. The objective of this study was to evaluate the amount of li...
متن کاملNorthern Light: Does Optimal Currency Area Criteria Explain Nordic Reluctance to Join Emu?
Finland was the only Nordic country to join the European Monetary Union (EMU) when it began on January 1, 1999. In the autumn of 1994, the voters of Sweden and Finland decided to join the European Union (EU), while those in Norway decided to remain outside. In Denmark, the voters had earlier decided not to join the single currency area but othewise remain a fully-integrated member of the EU. De...
متن کاملProvenancing Archaeological Wool Textiles from Medieval Northern Europe by Light Stable Isotope Analysis (δ13C, δ15N, δ2H)
We investigate the origin of archaeological wool textiles preserved by anoxic waterlogging from seven medieval archaeological deposits in north-western Europe (c. 700-1600 AD), using geospatial patterning in carbon (δ13C), nitrogen (δ15N) and non-exchangeable hydrogen (δ2H) composition of modern and ancient sheep proteins. δ13C, δ15N and δ2H values from archaeological wool keratin (n = 83) and ...
متن کاملSources and light absorption of water-soluble organic carbon aerosols in the outflow from northern China
High loadings of anthropogenic carbonaceous aerosols in Chinese air influence the air quality for over one billion people and impact the regional climate. A large fraction (17–80 %) of this aerosol carbon is water-soluble, promoting cloud formation and thus climate cooling. Recent findings, however, suggest that water-soluble carbonaceous aerosols also absorb sunlight, bringing additional direc...
متن کاملQuantifying Light Absorption of Iron Oxides and Carbonaceous Aerosol in Seasonal Snow across Northern China
In this study, we attempted to quantify light absorption by insoluble light-absorbing particles (ILAPs) such as black carbon (BC), organic carbon (OC) and iron oxides in snow using an optical method directly and compared the results with those obtained using optical and chemical analysis methods cooperatively in previous studies. The mass absorption coefficients (MACs) and absorption Ångström e...
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ژورنال
عنوان ژورنال: Norsk medietidsskrift
سال: 1995
ISSN: 0805-9535,0804-8452
DOI: 10.18261/issn0805-9535-1995-01-13