Physical properties of alternatives to the fully halogenated chlorofluorocarbons

Presented here are recommended values and correlations of selected physical properties of several alternatives to the fully halogenated chlorocarbons. The quality of the data used in this compilation varies widely, ranging from well-documented, high accuracy measurements from published sources to completely undocumented values listed on anonymous data sheets. That some of the properties for some fluids are available only from the latter type of source is clearly not the desired state of affairs. While some would reject all such data, the compilation given here is presented in the spirit of laying out the present state of knowledge and making available a set of data in a timely manner, even though its quality is sometimes uncertain. The correlations presented here are certain to change quickly as additional information becomes available

Calibration of the UMass Advanced Multi-Frequency Radar

The Advanced Multi-Frequency Radar is a three-frequency system designed and built by the University of Massachusetts Microwave Remote Sensing Lab (MIRSL). The radar has three frequencies, Ku-band (13.4 GHz), Ka-band (35.6 GHz), and W-band (94.92GHz). The additional information gained from additional frequencies allows the system to be sensitive to a wide range of atmospheric and precipitation particle sizes, while increasing the ability to derive particle microphysics from radar retrievals. This thesis details the calibration of data from the Canadian CloudSat/CALIPSO Validation Project (C3VP) held during January 2007 in Ontario, Canada. The calibration used internal calibration path data and was confirmed through comparison of precipitation reflectivity with an Environment Canada radar. The calibrated data was then used to estimate the median mass diameter of precipitating snow from a high-priority C3VP data set. This median mass diameter retrieval was compared to the results from a local ground instrument, the Snow Video Imager (SVI), showing good agreement

Intellectual outcome in early childhood after neonatal stroke.

Pediatric stroke is often associated with long-term neurological deficits, including cognitive and motor impairments. These deficits can adversely affect a child\u27s ability to function in all settings, including home and school. The purpose of the present study was to examine early intellectual outcome for survivors of neonatal arterial ischemic or sinovenous thrombotic stroke (i.e., stroke before 28 days of age). This study was the first of its kind to study intellectual outcome across three years post-stroke in stroke confined to the neonatal period. Children from the Canadian Pediatric Ischemic Stroke Registry were followed at 12, 24, and 36 months post stroke (the number of participants varied across these testing points). The Bayley Scales of Infant Development, the Wechsler Preschool and Primary Scales of Intelligence-Revised, and the Peabody Picture Vocabulary Test-Revised were used to measure intellectual outcome. Scores were compared with standardized normative data of healthy children. Results revealed that mean scores on measures of intellectual outcome generally fell within the average range. However, children with neonatal stroke obtained significantly lower scores than the normative sample on the Bayley Psychomotor Development Index (PDI) at 12 months and on the Bayley Mental Development Index (MDI) and PDI at 24 months post-stroke. Outcome did not differ based on gender, stroke type, or presence of infarction. However, comparison of intellectual outcome based on hemisphere of infarction revealed performance favouring children with left hemispheric infarction on an absolute basis at all time points. These differences were significant at 24 and 36 months post-stroke. Further research is required to confirm whether the cognitive status of these children improves, remains in the low average range, or declines with development as more complex skills are learned.Dept. of Psychology. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2005 .M35. Source: Masters Abstracts International, Volume: 44-03, page: 1521. Thesis (M.A.)--University of Windsor (Canada), 2005

Alien Registration- Mclinden, Mary F. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/23812/thumbnail.jp

Alien Registration- Mclinden, Mary F. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/23812/thumbnail.jp

Working fluid selection for space-based two-phase heat transport systems

The working fluid for externally-mounted, space-based two-phase heat transport systems is considered. A sequence of screening criteria involving freezing and critical point temperatures and latent heat of vaporization and vapor density are applied to a data base of 860 fluids. The thermal performance of the 52 fluids which pass this preliminary screening are then ranked according to their impact on the weight of a reference system. Upon considering other nonthermal criteria (flammability, toxicity, and chemical stability) a final set of 10 preferred fluids is obtained. The effects of variations in system parameters is investigated for these 10 fluids by means of a factorial design

[OIII] Emission and Gas Kinematics in a Lyman-alpha Blob at z ~ 3.1

We present spectroscopic measurements of the [OIII] emission line from two subregions of strong Lyman-alpha emission in a radio-quiet Lyman-alpha blob (LAB). The blob under study is LAB1 (Steidel et al. 2000) at z ~ 3.1, and the [OIII] detections are from the two Lyman break galaxies embedded in the blob halo. The [OIII] measurements were made with LUCIFER on the 8.4m Large Binocular Telescope and NIRSPEC on 10m Keck Telescope. Comparing the redshift of the [OIII] measurements to Lyman-alpha redshifts from SAURON (Weijmans et al. 2010) allows us to take a step towards understanding the kinematics of the gas in the blob. Using both LUCIFER and NIRSPEC we find velocity offsets between the [OIII] and Lyman-alpha redshifts that are modestly negative or consistent with 0 km/s in both subregions studied (ranging from -72 +/- 42 -- +6 +/- 33 km/s). A negative offset means Lyman-alpha is blueshifted with respect to [OIII], a positive offset then implies Lyman-alpha is redshifted with respect to [OIII]. These results may imply that outflows are not primarily responsible for Lyman alpha escape in this LAB, since outflows are generally expected to produce a positive velocity offset (McLinden et al. 2011). In addition, we present an [OIII] line flux upper limit on a third region of LAB1, a region that is unassociated with any underlying galaxy. We find that the [OIII] upper limit from the galaxy-unassociated region of the blob is at least 1.4 -- 2.5 times fainter than the [OIII] flux from one of the LBG-associated regions and has an [OIII] to Lyman-alpha ratio measured at least 1.9 -- 3.4 times smaller than the same ratio measured from one of the LBGs.Comment: submitted to Ap