Radioactive method enables determination of surface areas rapidly and accurately

Radioactive krypton adsorption technique is used to determine the surface area of more than one sample of material simultaneously

A Study of the Coping Strategies of Financially Vulnerable Families Facing the Child Care Cliff

Session 2: Family Resources. Presenter: Susan Roll, Ph.D., University of Denver (2010) - "A Study of the Coping Strategies of Financially Vulnerable Families Facing the Child Care Cliff".The Ohio State University College of Social Wor

MEASUREMENT OF DYNAMIC SURFACE TENSION IN BUBBLING SYSTEMS

The static and dynamic surface tension was measured for aqueous solutions of eleven surface-active agents for the purpose of studying the effect of surface tension upon boiling heat transfer. The surfactants were chosen from the Tween, Aerosol, and Hyonic series. Dynamic surface tension, at T = 90 deg C, was investigated by observing the volume and frequency for air bubbles forming from a submerged orifice. Static surface tension, at T = 100 deg C, was measured using a duNouy tensiometer. In all cases, the dynamic surface tension for solutions of these surface active agents was less than the value for pure water, greater than the static value for the same concentration, and was a smoothly decreasing function of concentration. (auth

VETA x ray data acquisition and control system

We describe the X-ray Data Acquisition and Control System (XDACS) used together with the X-ray Detection System (XDS) to characterize the X-ray image during testing of the AXAF P1/H1 mirror pair at the MSFC X-ray Calibration Facility. A variety of X-ray data were acquired, analyzed and archived during the testing including: mirror alignment, encircled energy, effective area, point spread function, system housekeeping and proportional counter window uniformity data. The system architecture is presented with emphasis placed on key features that include a layered UNIX tool approach, dedicated subsystem controllers, real-time X-window displays, flexibility in combining tools, network connectivity and system extensibility. The VETA test data archive is also described

Aquilegia, Vol. 27 No. 2, March-June 2003: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1097/thumbnail.jp

Aquilegia, Vol. 27 No. 1, January-February 2003: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1096/thumbnail.jp