The present disclosure relates to a wall box adapted to be mounted at a mid-span access location of a fiber optic telecommunications cable. The wall box includes an enclosure having a main body with an open front side. The enclosure also includes a front cover for opening and closing the op...
A mineral-fiber composition that is biologically degradable characterized by the following constituents in percent by weight: SiO2 40 to 67, CaO 20 to 45, MgO 0 to 12, Na2O 0 to 10, B2O3 0 to 15, Na2O + B2O3 0 to 25, P2O5 0 to 5, Al2O3 0 to 3, TiO2, Fe2O3, BaO, MnO...
A Nation At Risk: The Imperative For Educational Reform. An Open Letter to the American People. A Report to the Nation and the Secretary of Education. This report: (1) investigates the declining state of the educational system in America, as measured by high school student performance in the...
A jig for installing a timing chain of an engine is provided to assist to readily pass the timing chain with a chain guide and a tension arm through a hole of a cylinder head with the tension arm maintaining a certain posture. A jig for installing a timing chain of an engine includes ...
Natural interspecific hybridization between Gunnera bracteataand G. peltata (Gunneraceae) in the Juan Fernandez Islands, Chile, is analyzedmorphologically ... P Pacheco,TF Stuessy,DJ Crawford 被引量: 49发表: 1991年 Flavonoid chemistry and evolution of Dendroseris and Gunnera in the Juan Fernandez...
stream of gas; (b) directing the combined stream of gas through a column which preferentially removes the sample gas from the combined stream to produce a retentate stream of gas; and (c) analyzing the retentate stream of gas by emission spectroscopy for the presence of at least one gas ...
The dielectricspectra of the glass former, m -fluoroaniline ( m -FA), at ambient pressure show the presence of a secondary relaxation, which was ident... S.,Hensel-Bielówka,M.,... - 《Journal of Chemical Physics》 被引量: 44发表: 2005年 Normalization of direct beam spectral irradiance...
How will plant pathogens adapt to host plant resistance at elevated CO2 under a changing climate? Chakraborty S, Datta S (2003) How will plant pathogens adapt to host plant resistance at elevated CO2 under a changing climate? New Phytol 159:733-742... Sukumar,Chakraborty,Somnath,... - 《...
Air conditioning system and method for treatment of air for air conditioning of a room The present invention relates to an air conditioning system, in particular an air conditioning system for air-conditioning a passenger cabin of an aircraft, with at least one arranged in a ram air duct heat...