The effect of greatly restricting heat treatment time and temperature, as well as the strain space between heat treatments was investigated for a high homogeneity Nb46.5wt% composite. The number of heat treatments was 3 or 6. It was found that the crucial heat treatment was the final one and that the initial ones could be considerably restricted. A strong linear relationship was found between J...

Analytical and experimental studies conducted at the NASA Langley Research Center for investigating integrated cryogenic propellant tank systems for a Reusable Launch Vehicle are described. The cryogenic tanks are investigated as an integrated tank system. An integrated tank system includes the tank wall, cryogenic insulation, Thermal Protection System (TPS) attachment sub-structure, and TPS. A...

Energy-sensitive calorimetric detectors that operate at low temperatures ("cryogenic detectors") have recently been applied for the first time as ion detectors in time-of-flight mass spectrometry. Compared to conventional, ionization-based detectors, which rely on secondary electron formation or the charge created in a semiconductor, cryogenic detectors measure low-energy solid state excitation...

treatment of human promonocytic leukemic cell line u937 with mild hyperthermia in the temperature range of 40-43°c resulted in differentiation of these cells into monocyte/macrophage-like cells in a heat dose and time dependent manner. this process was accompanied by marked morphological, functional and proliferational changes. u937 cells which normally grow in supension in the logarithmic phas...