نتایج جستجو برای: thermal vacuum testing
تعداد نتایج: 592741 فیلتر نتایج به سال:
It is shown how the results of Deser and Levin on the response of accelerated detectors in anti-de Sitter space can be understood from the same general perspective as other thermality results in spacetimes with bifurcate Killing horizons. A detector with linear acceleration a in the Minkowski vacuum sees a thermal bath at the temperature TU = a/2π [1], while an inertial detector in de Sitter (d...
The eradication of Trichophyton rubrum has been attempted via laser irradiation because it could result advantageous relative to current clinical therapies. Anticipating that the necessary thermal effects could unintentionally damage the underlying toe dermal layer, we have explored two auxiliary approaches: (a) laser irradiation under vacuum pressure, with and without water dousing and, (b) co...
The polymerization of 1,4-diethynylbenzene was studied on a Cu(111) surface using scanning tunneling microscopy (STM) under ultra-high vacuum conditions. Thermal activation yielded disordered covalent networks, where distinct basic structural motifs indicate different coupling reactions.
During image quality testing in the third and final thermal-vacuum test of the integrated WFC3 instrument, an anomaly was discovered whereby the width and peak signal fraction of short exposure PSF images were observed to modulate for alternate exposures in a series. This behavior was traced to vibration of the UVIS shutter when its servo-control loop is enabled, which is believed to induce sma...
Vacuum and gas purification: The detector is mounted inside an approximately 10 m vacuum chamber, which contains P10 under measurement conditions. Therefore the maximum reachable vacuum can be used as an estimate for the leakage rate of the chamber and gas quality. After severe changes to the prevacuum system, leak-testing is currently in progress. Standalone tests of the gas purification syste...
This paper presents an intuitive yet effective in-situ thermal diffusivity testing structure and testing method. The structure consists of two doubly clamped beams with the same width and thickness but different lengths. When the electric current is applied through two terminals of one beam, the beam serves as thermal resistor and the resistance R(t) varies as temperature rises. A delicate ther...
Hybrid lead halide perovskites typically form polycrystalline films that have multiple grain sizes and surface defects. A key engineering challenge toward commercialization is therefore the production of homogeneous, defect‐free large‐area devices achieving high efficiency. New market opportunities may arise from vacuum‐deposited if detailed understanding control crystal formation are available...
The energy requirement of vacuum membrane distillation (VMD) with or without recirculation was modelled using both experimental results and theoretical data. The trends are generally consistent between the theoretical and experimental data. Thermal energy contributes the most to the total energy required for the VMD process. To lower the thermal energy cost, waste heat resource and heat recover...
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