The garbage collector presented in this paper makes use of two well known compaction garbage collection algorithms with very diierent performance characteristics: Cheney's two-space copying collector and Jon-ker's single-space sliding compaction collector. We propose a scheme which allows either collector to be used. The run-time memory requirements of the program being executed are used to det...

An evacuated flat-plate photovoltaic/thermal (E-PV/T) collector was proposed. The inner space of the E-PV/T is vacuumed to suppress non-radiative heat losses, thus increasing thermal efficiency collector. Therefore, has potential simultaneously deliver electricity and at high temperatures. A mathematic model developed evaluate performance effect some key parameters (e.g., initial water temperat...

PURPOSE To determine whether preferential pathways exist within the human trabecular meshwork, pigmented and nonpigmented regions adjacent to and between collector channels were examined, and the configuration of the juxtacanalicular tissue (JCT) was analyzed. METHODS Healthy whole human eyes were perfused at 10 or 25 mm Hg with 0.5 mum fluorescent beads. Tissue wedges of pigmented and nonpig...

To obtain long cathode lifetimea, the surface of the spent beam collector for the photocathode RF power source (called the Lasertron) must have a low coefficient of darorption of gas moleculea by electrons. We uuxmbled a low voltage (5 10 kV) ultrahigh vacuum electron gun md target system to measure the desorption rates of CO and COz under conditions where the power density, charge density and ...

Hybrid Photovoltaic Thermal (PVT) collectors are an emerging technology that combines PV and solar thermal systems in a single solar collector producing heat and electricity simultaneously. The focus of this thesis work is to evaluate the performance of unglazed open loop PVT air system integrated on a garage roof in Borlänge. As it is thought to have a significant potential for preheating vent...

An evacuated tube solar collector using therminol D-12 as heat transfer fluid coupled with parabolic trough is studied in this paper. An experimental set-up was constructed to study the performance of evacuated tube collector with therminol D-12 as heat transfer fluid. The parabolic trough is coupled with evacuated tube collector for better performance. In the traditional solar collectors water...

The solar radiation absorbed by the photovoltaic thermal systems and not transformed into electricity creates a problem that significantly influences reliability efficiency of cells. In order to passively solve this in hot arid climate, night radiative cooling technology was proposed work, where water system cooled circulating collector exploiting technique, it used next day for For aim, mathem...

Omri Boehm offers a lucid and incisive defence, supported by careful scholarship, of the compelling idea that preoccupation with Spinoza—appreciation of the force of Spinoza’s reasoning along with a concern to avoid his drastic conclusions—is at the heart of Kant’s philosophical enterprise. I have learned a great deal from Boehm’s fascinating study, and its excellence will be clearly visible to...

For a solar thermal system, increasing the heat transfer area can increase the output temperature of the system. However, this approach leads to a bigger and bulkier collector. It will then increase the cost and energy needed to manufacture the solar collector. This study is carried out to estimate the potential to design a smaller solar collector that can produce the same desired output temper...