摘要:
The invention relates to an electron emission material for use in fluorescent lamps that releases a significantly reduced amount of decomposition material, predominantly CO2, during in-lamp heat-treatment. Consequently, there is a significant reduction in the amount of electrode decomposition-related contaminants in the lamp. In addition, the emission material of the invention requires a much lower temperature in-lamp heat-treatment during manufacturing than that of conventional lamps of the same type. The invention, while described herein for use primarily with fluorescent lamps, has broader application to any device where the primary means of electron emission is of the thermionic type.
摘要:
Apparatus and process of removing quantities of heavy metals from blood utilizing immobilized chelating agents which are positioned on the opposite side of an anisotropic membrane from blood flowing across the retentive filter surface of the membrane.
摘要:
The invention relates to a process for the production of bands or sheets of isotropic mechanical properties from copper and copper alloys, such bands or sheets being subjectable to intensive cold shaping. According to the invention the ZrB.sub.2 (zirconium boride) content of the melted metal bath is adjusted by the addition of zirconium boride to a level between 0.01% by weight and 0.075% by weight, and if desired, not more than 50% by weight of the zirconium content of the added ZrB.sub.2 is replaced by one or more of the metals Ti, V, Nv, Ca, Mg and Co, then, if desired, zirconium is added to the metal bath in a stoichiometric ratio calculated for the lead content of the alloy exceeding 0.015% by weight, then the metal bath containing the additives is solidified in the form of a band, and if desired, an inert gas atmosphere is maintained in the heat stabilizing furnace of the casting equipment and/or an inert gas lock and secondary cooling are applied during the solidification of the metal bath. By the process according to the invention, bands and sheets of controlled crystal structure and improved quality, increased malleability and suitable for an intensive (70 to 99%) cold rolling can be produced both from pure copper and from copper-bearing substances recycled to the processing plant with a content of contaminations detrimental to the plant.
摘要:
Extracorporeal apparatus for selective removal of pathogenic factors, i.e. antigens, from blood by circulating the blood through hollow fibers which, exterior to the lumen are in proximity to antibodies, i.e. proteins having strong biospecific activity for the pathogenic factors. In some situations, the antibody is segregated in a liquid medium outside the hollow fiber to improve mass transfer and the antigen penetrates the ultrafilter wall of the fiber to join the antibody.
摘要:
A process is disclosed for the production of finely divided matrix material having substantially uniform porosity about the surface thereof with nuclear tracks from an isotropic source. Selected products of the process have only surface porosity or pores which pass completely through the matrix material.
摘要:
Extracorporeal apparatus for selective removal of pathogenic factors, i.e. antigens, from blood by circulating the blood through hollow fibers which, exterior to the lumen are in proximity to antibodies, i.e. proteins having strong biospecific activity for the pathogenic factors. In some situations, the antibody is segregated in a liquid medium outside the hollow fiber to improve mass transfer and the antigen penetrates the ultrafilter wall of the fiber to join the antibody.