Nurses\u27 Alumnae Association Bulletin, May 1963

President\u27s Letter Alumnae Meetings, 1962 Building Fund Mediocrity Hospital Report Alumnae Notes Social Committee Student Activities Marriages, New Arrivals and Necrology Annual Giving Fund Driv

Great Yorkshire Livestock Show Attendees’ Attitudes about Agriculture

The purpose of our research was to determine if attending a U.K. livestock show changed attendees’ attitudes about agriculture and to compare those changes in attitudes to attendees of a U.S. state fair similar in size and dynamic. The sample was livestock show attendees at the Great Yorkshire Show (GYS). The mixed-method design included a then and now semantic differential scale with bipolar adjective pairs to measure attendees’ attitudes about agriculture before and after the experience and qualitative interviews with photo elicitation to learn about how attendees developed attitudes about agriculture. Participants had positive attitudes about agriculture before they attended the Show and had more positive attitudes after attending. Participants had more positive attitudes before and after attending the Show than did California State Fair attendees. In addition, participants lacked prior experiences with agriculture, but attending the GYS provided them the opportunity to develop positive attitudes through cognitive, behavioral, and environmental factors. Fair attendance should be promoted because they provide unique opportunities for experiential learning and U.S. fairs should adopt experiential tactics used at the GYS. Further research is needed to better understand how GYS attendees developed positive attitudes about agriculture prior to attending the Show and what elements of the GYS experience were most influential to attendees’ attitude development

The Active Personnel Dosimeter: Apfel Enterprises superheated drop detector

The Active Personnel Dosimeter (APD) provides a digital readout of events caused by neutrons interacting with superheated liquid droplets. The droplets are suspended in a gel held in a replaceable cartridge. Upon neutron interaction, the superheated droplet vaporizes, forming a bubble. The sound produced in this process is recorded by transducers that sense the accompanying pressure pulse. The APD electronically discriminates against spurious noise and vibration. Studies with the production prototype APDs indicate that the detector response is linear up to about 0.40 mSv, with large variations sometimes from predicted values and between cartridges at higher dose equivalents. The response to standard neutron sources (bare {sup 252}Cf, PuBe, PuB, PuF, PuLi) is reported and compared with the expected response. Unirradiated cartridges self-nucleate when heated to temperatures of 46{degree}C. The APD is insensitive to low-energy photons but responds to high-energy photons and electrons. 9 refs., 2 figs., 3 tabs

Factors affecting the response of the bubble detector BD-100 and a comparison of its response to CR-39

The BD-100 is a bubble detector available commercially from Chalk River Nuclear Laboratories, Canada for neutron dosimetry. According to the manufacturer, the BD-100 detects neutrons over an energy range of 100 keV to 14 MeV and the dose equivalent response is independent of energy. The sensitivity of the detector is dependent upon its temperature at the time of irradiation. The sensitized detector self-nucleates upon sharp impact and when heated to temperatures of 48/sup 0/C or greater. The BD-100 is insensitive to low energy gamma rays but responds to 6 MeV photons. The sensitivity (bubbles/..mu..Sv) of the BD-100 was found to be energy dependent when exposed to standard neutron sources with average energies ranging from 0.5 to 4.5 MeV. The bubbles formed upon irradiation continued to grow in size with time. The response of electrochemically etched CR-39 to the same neutron sources is also reported for comparison

Nurses\u27 Alumnae Association Bulletin, June 1964

President\u27s Message Officers and Committee Chairmen Financial Report Hospital and School of Nursing Report Student Activities Jefferson Expansion Program Resume of Alumnae Meetings Staff Nurses Private Duty Social Committee Reports Program Scholarship Bulletin Committee Report Annual Luncheon Notes Membership and Dues Units in Jefferson Expansion Program Center Annual Giving Drive 1963 Report of Ways and Means Committee Jefferson Building Fund Contributions Annual Giving Contributions 1964 Jefferson Building Fund Report Help the Building Fund Committee! Vital Statistics Class News Notice

w THE ACTIVE PERSONNEL DOSIMETER- APFEL ENTERPRISES SUPERHEATED DROP DETECTOR*

Abstract- The Active Personnel Dosimeter (APD) provides a digital readout of events caused by-neutrons interacting with superheated liquid droplets. The droplets are suspended in a gel held in a replaceable cartridge. Upon neutron interaction, the superheated droplet vaporises, forming a bubble. The sound produced in this process is recorded by transducers that sense the accompanying pressure pulse. The APD electronically discriminates against spurious noise and vibration. Studies with the production prototype APDs indicate that the detector response is linear up to about 0.40 mSv, with large variations sometimes from predicted values and between cartridges at higher dose equivalents. The response to standard neutron sources (bare 252Cf, PuBe, PUB, PuF, PuLi) is reported and compared with the expected response. Unirradiated cartridges self-nucleate when heated to temperatures of 46OC. The APD is insensitive to low-energy photons but responds to high-energy photons and electrons

Near Infrared Emitting Semiconductor Polymer Dots for Bioimaging and Sensing

Semiconducting polymer dots (Pdots) are rapidly becoming one of the most studied nanoparticles in fluorescence bioimaging and sensing. Their small size, high brightness, and resistance to photobleaching make them one of the most attractive fluorophores for fluorescence imaging and sensing applications. This paper highlights our recent advances in fluorescence bioimaging and sensing with nanoscale luminescent Pdots, specifically the use of organic dyes as dopant molecules to modify the optical properties of Pdots to enable deep red and near infrared fluorescence bioimaging applications and to impart sensitivity of dye doped Pdots towards selected analytes. Building on our earlier work, we report the formation of secondary antibody-conjugated Pdots and provide Cryo-TEM evidence for their formation. We demonstrate the selective targeting of the antibody-conjugated Pdots to FLAG-tagged FLS2 membrane receptors in genetically engineered plant leaf cells. We also report the formation of a new class of luminescent Pdots with emission wavelengths of around 1000 nm. Finally, we demonstrate the formation and utility of oxygen sensing Pdots in aqueous media