1,233 research outputs found
Alpha Clustering and the stellar nucleosynthesis of carbon
The astrophysical S--factor and reaction rates for the triple--alpha process
are calculated in the direct--capture model. It is shown that the stellar
carbon production is extremely sensitive to small variations in the N--N
interaction.Comment: 2 pages LaTe
Assessing the Effects of a Paired TBL Session and Patient Simulation on Pharmacy Student HIV Treatment Knowledge
Description of the Problem: Pharmacists can play a crucial role in monitoring, counseling, and providing adherence checks across practice pharmacy settings; but they may not gain experience in this area until after graduating from pharmacy school.
Statement of Innovation: Students participated in an intentionally aligned team-based learning session followed by completion of an HIV patient treatment worksheet and an HIV patient care simulation. This sequence was assessed using the HIV Treatment Knowledge Scale.
Description of the Innovation: Second-year pharmacy students (N=48, 98% response rate) participated in a baseline knowledge assessment before a four-hour HIV team-based learning (TBL) session, which included the use of an online HIV Patient Management Simulator. Students were administered the scale again post-session. Three days before the simulation, students had access to an HIV patient treatment worksheet that was required to be completed before the simulation. Ten days after the initial assessment, students participated in an HIV patient simulation where they proposed a new antiretroviral plan while also addressing monitoring, barriers, and maximizing adherence for the patient. Post-simulation, students were again administered the scale. Data were analyzed using descriptive statistics, Wilcoxon and paired t-tests, as appropriate.
Critical Analysis: A total of 48 second-year pharmacy students participated. HIV knowledge increased significantly post-TBL (p \u3c 0.001). Post-simulation, scores improved, but not significantly (p = 0.291). Knowledge on 15 of the 21 items on the HIV Treatment Knowledge Scale significantly improved from pre-TBL to post-simulation (p ≤ 0.025).
Next Steps: Future investigation should focus on the impact that HIV simulation training has on skills, abilities, confidence, and empathy
The impact of free convection on late morning ozone decreases on an Alpine foreland mountain summit
Exceptional patterns in the diurnal course of ozone mixing ratio at a mountain top site (998 m a.s.l.) were observed during a field experiment (September 2005). They manifested themselves as strong and sudden decreases of ozone mixing ratio with a subsequent return to previous levels. The evaluation of corresponding long-term time series (2000–2005) revealed that such events occur mainly during summer, and affect the mountain top site on about 18% of the summer days. Combining (a) surface layer measurements at mountain summit and at the foot of the mountain, (b) in-situ (tethered balloon) and remote sensing (SODAR-RASS) measurements within the atmospheric boundary layer, the origin of these events of sudden ozone decrease could be attributed to free convection. The free convection was triggered by a rather frequently occurring wind speed minimum around the location of the mountain
Differential Cross Section and Vector Polarization for the elastic scattering of 41 to 51 MeV Deuterons on Carbon
A solid state light-matter interface at the single photon level
Coherent and reversible mapping of quantum information between light and
matter is an important experimental challenge in quantum information science.
In particular, it is a decisive milestone for the implementation of quantum
networks and quantum repeaters. So far, quantum interfaces between light and
atoms have been demonstrated with atomic gases, and with single trapped atoms
in cavities. Here we demonstrate the coherent and reversible mapping of a light
field with less than one photon per pulse onto an ensemble of 10 millions atoms
naturally trapped in a solid. This is achieved by coherently absorbing the
light field in a suitably prepared solid state atomic medium. The state of the
light is mapped onto collective atomic excitations on an optical transition and
stored for a pre-programmed time up of to 1 mu s before being released in a
well defined spatio-temporal mode as a result of a collective interference. The
coherence of the process is verified by performing an interference experiment
with two stored weak pulses with a variable phase relation. Visibilities of
more than 95% are obtained, which demonstrates the high coherence of the
mapping process at the single photon level. In addition, we show experimentally
that our interface allows one to store and retrieve light fields in multiple
temporal modes. Our results represent the first observation of collective
enhancement at the single photon level in a solid and open the way to multimode
solid state quantum memories as a promising alternative to atomic gases.Comment: 5 pages, 5 figures, version submitted on June 27 200
Educating Social Scholars: Examining Novice Researchers’ Practices with Social Media
Recent articles in the educational research fi eld have called for a stronger research focus on students’ learning with everyday technologies in-and-out-of classrooms and on the changing nature of scholars’ practices in light of technological advancements. We present fi ndings from a mixed methods study of whether and how novice researchers understand and practice social scholarship – a concept currently being debated in various disciplines – which seeks to leverage social media affordances to create expanded sites for research collaboration, peer review, dissemination, and evaluation of research impact. We found that novice researchers focused almost exclusively on social scholarship of discovery and much less on interdisciplinary, teaching, or applied scholarship. Insights from this study will appeal to those interested in examining the theory and design of graduate student learning and faculty development
Properties of Be and C deduced from the folding--potential model
The -- differential cross sections are analyzed in the
optical model using a double--folded potential. With the knowledge of this
potential bound and resonance--state properties of --cluster states in
Be and C as well as astrophysical S--factors of
He(,)Be and Be(,)C are
calculated. --widths and B(E2)--values are deduced.Comment: 2 pages LaTeX, 2 figures can be obtained from the author
Assessing the Ability of Student Pharmacists to Facilitate Human Immunodeficiency Virus Point-of-Care Testing
MeV neutrinos in double beta decay
The effect of Majorana neutrinos in the MeV mass range on the double beta
decay of various isotopes is studied on pure phenomenological arguments. By
using only experimental half life data, limits on the mixing parameter
of the order 10 can be derived. Also the possible
achievements of upcoming experiments and some consequences are outlined.Comment: 7 pages, 6 uudecoded EPS-figure
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