Process Modeling and Economic Optimization of a Solar Driven Membrane Distillation System for Desalination.
Abstract not provided.
Nenoff, Tina M.↗
Engineering topics
Arnold, R.
Publications and source records attributed to Arnold, R..
Measurement of the 2 ν β β decay half-life and search for the 0 ν β β decay of Cd 116 with the NEMO-3 detector
The NEMO-3 experiment measured the half-life of the 2νββ decay and searched for the 0νββ decay of 116 Cd. Using 410 g of 116 Cd installed in the detector with an exposure of 5.26 y, (4968±74) events corresponding to the 2νββ decay of 116 Cd to the ground state of 116 Sn have been observed with a signal to background ratio of about 12. The half-life of the 2νββ decay has been measured to be T 2ν 1/2 = [2.74 ± 0.04(stat) ± 0.18(syst)] × 10 19 y. No events have been observed above the expected background while searching for 0νββ decay. The corresponding limit on the half-life is determined to be T 0ν 1/2 ≥ 1.0 × 10 23 y at the 90% C.L. which corresponds to an upper limit on the effective Majorana neutrino mass of < m ν > ≤ 1.4–2.5 eV depending on the nuclear matrix elements considered. As a result, limits on other mechanisms generating 0νββ decay such as the exchange of R-parity violating supersymmetric particles, right-handed currents and majoron emission are also obtained.
73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
Lightning and related phenomena in isolated thunderstorms and squall line systems
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Rust, W. D.↗
Lightning and related phenomena in thunderstorms and squall lines
During the past few years, cooperative research on storm electricity has yielded the following results of both basic and applied interest: (1) the intracloud to cloud-to-ground flashing ratio can be as great as 40:1; (2) as storm cells in a squall line dissipate, longer flashes become predominant; (3) there are two centers of lightning activity maxima that are vertically separated, the lower maximum at about 5 km and the upper at about 12 km. In addition, (4) storms produce lightning in their upper regions at a high rate; (5) lightning appears to be related in time to convective motions; (6) positive cloud-to-ground flashes occur in the severe stage of storms and in the later, well-developed stage of squall line storms; (7) mesoscale convective complexes have been observed to have cloud-to-ground flashing rates of more than 48/min; and (8) the electric field in anvils well away from the main storm core (more than 60 km) can be very high, more than 94 kV/m.
Rust, W. D.↗
Modular missile borne computers
The modular missile borne computer's architecture with emphasis on how that architecture evolved is discussed. A careful analysis is given of both the physical constraints and the processing requirements.
Ramseyer, R.↗
Three-meter telescope study
A means is presented whereby the effect of various changes in the most important parameters of a three meter aperature space astronomy telescope can be evaluated to determine design trends and to optimize the optical design configuration. Methods are defined for evaluating the theoretical optical performance of axisymmetric, centrally obscured telescopes based upon the intended astronomy research usage. A series of design parameter variations is presented to determine the optimum telescope configuration. The design optimum requires very fast primary mirrors, so the study also examines the current state of the art in fabricating large, fast primary mirrors. The conclusion is that a 3-meter primary mirror having a focal ratio as low as f/2 is feasible using currently established techniques.
Wissinger, A.↗