Thelma Rag

Bold title with stylized texthttps://scholarsjunction.msstate.edu/cht-sheet-music/14003/thumbnail.jp

Controlling Individual Domain Walls in Ferromagnetic Nanowires for Memory and Sensor Applications

Controlled motion of 180o and 360o domain walls along planar nanowires is presented. Standard Landau – Lifshitz micromagnetic modeling has been used to simulate the response of the domain walls to the application of an external magnetic field. A 180o wall is quickly and easily moved with the application of an applied. field along the axis of the wire but a 360odomain wall is stationary in the same case. An oscillatory applied field can be used to continually move the wall along the wires axis. The speed at which the 360o domain wall is found to be several times slower than a similar 180o domain wall and is limited by interaction between the magnetization of the domain wall and the external field

Propulsion and Space Vehicle Systems Analysis Program Tensor I, volume I Technical report no. 341

Computer program for space vehicle and propulsion systems analysi

Electrostatic protection of the Solar Power Satellite and rectenna

Several features of the interactions of the solar power satellite (SPS) with its space environment were examined theoretically. The voltages produced at various surfaces due to space plasmas and the plasma leakage currents through the kapton and sapphire solar cell blankets were calculated. At geosynchronous orbit, this parasitic power loss is only 0.7%, and is easily compensated by oversizing. At low-Earth orbit, the power loss is potentially much larger (3%), and anomalous arcing is expected for the EOTV high voltage negative surfaces. Preliminary results of a three dimensional self-consistent plasma and electric field computer program are presented, confirming the validity of the predictions made from the one dimensional models. Magnetic shielding of the satellite, to reduce the power drain and to protect the solar cells from energetic electron and plasma ion bombardment is considered. It is concluded that minor modifications can allow the SPS to operate safely and efficiently in its space environment. The SPS design employed in this study is the 1978 MSFC baseline design utilizing GaAs solar cells at CR-2 and an aluminum structure

Decreasing Clostridium Difficile Health Care - Associated Infections Through Use of a Launderable Mattress Cover

BACKGROUND: The annual incidence of Clostridium difficile infection (CDI) in the United States is estimated to be 330,000 cases. We evaluated the impact of using a launderable mattress and bed deck cover on the incidence of hospital-onset CDI in two long-term acute care hospitals (LTACH)s. METHODS: Two LTACH hospitals began using a launderable mattress and bed deck cover on beds starting in May of 2013. One facility had 74 beds and the other had 30 beds. Covers were changed after every patient. The covers were laundered using hot water, detergent, and chlorine. Rates for CDIs were compared using Poisson regression between the 16 months before use of the launderable cover and the 14 months after the cover started being used. RESULTS: At Hospital A, the use of bedcovers reduced the rate of infections by 47.8% (95% CI 47.1 – 48.6), controlling for the rate of hand washing compliance and length of stay in days. At Hospital B, the use of bedcovers reduced the rate of infections by 50% (95% CI 47.5 – 52.7), controlling for the rate of hand washing compliance and length of stay in days. CONCLUSIONS: The use of a launderable cover for mattresses and bed decks of hospital beds was associated with a decreased rate of healthcare associated CDIs in two LTACHs