193 research outputs found
Periods of High Intensity Solar Proton Flux
Analysis is presented for times during a space mission that specified solar proton flux levels are exceeded. This includes both total time and continuous time periods during missions. Results for the solar maximum and solar minimum phases of the solar cycle are presented and compared for a broad range of proton energies and shielding levels. This type of approach is more amenable to reliability analysis for spacecraft systems and instrumentation than standard statistical models
Possible Autochthonous Malaria from Marseille to Minneapolis
We report 2 cases of Plasmodium falciparum malaria in southern France in a French woman and an American man of Togolese origin who reported no recent travel to malaria-endemic countries. Both infections occurred after a stay near Marseille, which raises the possibility of autochthonous transmission. Entomologic and genotypic investigations are described
Time Exceedances for High Intensity Solar Proton Fluxes
A model is presented for times during a space mission that specified solar proton flux levels are exceeded. This includes both total time and continuous time periods during missions. Results for the solar maximum and solar minimum phases of the solar cycle are presented and compared for a broad range of proton energies and shielding levels. This type of approach is more amenable to reliability analysis for spacecraft systems and instrumentation than standard statistical models
Structure and Colors of Diffuse Emission in the Spitzer Galactic First Look Survey
We investigate the density structure of the interstellar medium using new
high-resolution maps of the 8 micron, 24 micron, and 70 micron surface
brightness towards a molecular cloud in the Gum Nebula, made as part of the
Spitzer Space Telescope Galactic First Look Survey. The maps are correlated
with 100 micron images measured with IRAS. At 24 and 70 micron, the spatial
power spectrum of surface brightness follows a power law with spectral index
-3.5. At 24 micron, the power law behavior is remarkably consistent from the
0.2 degree size of our maps down to the 5 arcsecond spatial resolution. Thus,
the structure of the 24 micron emission is self-similar even at milliparsec
scales. The combined power spectrum produced from Spitzer 24 micron and IRAS 25
micron images is consistent with a change in the power law exponent from -2.6
to -3.5. The decrease may be due to the transition from a two-dimensional to
three-dimensional structure. Under this hypothesis, we estimate the thickness
of the emitting medium to be 0.3 pc.Comment: 13 Pages, 3 Figures, to be published in Astrophysical Journal
Supplement Series (Spitzer Special Issue), volume 154. Uses aastex v5.
The effective potential, critical point scaling and the renormalization group
The desirability of evaluating the effective potential in field theories near
a phase transition has been recognized in a number of different areas. We show
that recent Monte Carlo simulations for the probability distribution for the
order parameter in an equilibrium Ising system, when combined with low-order
renormalization group results for an ordinary system, can be used to
extract the effective potential. All scaling features are included in the
process.Comment: REVTEX file, 22 pages, three figures, submitted to Phys. Rev.
The Ursinus Weekly, December 4, 1950
Gillespie to play at Friday night senior formal • Men students cast 107-71 vote against dorm amendment • Music organizations to present Messiah in Bomberger chapel Thursday night • Y Commissions to meet; PAC plans Xmas party • Response to WSSF is disappointing; Receipts total $350 • Critic hails Angel Street as vehicle for superb thespian dramatic acting • Hungarian to address Tuesday night Forum • Twelve to become Rosicrucians • Yule traditions dominate ensuing campus activities • Bloodmobile to be at Trinity church Thursday morning • 26 are accepted by local chapter of Pi Gamma Mu • Cafe Pigalle to return to gym Saturday night • Mary MacPherson chosen May Queen; Marge Paynter named pageant manager • Editorial: Dynamic force • WSGA notes • Delta Pi Sigma welcomes ten off-campus men • English Club admits members • Revived rec center attracts many • 45 future teachers approach termination of tribulation • IRC hears attorney speak on problems of western nations • Ruby schedules photos, pushes subscriptions • Pigskin parade • Bears top textile 64-50 in court season inaugural • Six close careers on soccer squad • Derr deadlocks Albright 6-6 • Four senior girls play hockey finale • Grid player scans all-state selections • Ursinus grid aggregation suffers loss of twelve graduating upper classmen • Penn triumphs 3-1 over Ursinus girls • Reid Watson became football manager when injury benched former grid star • Messiah reputation stems from mastery of simple techniques • Eight teams compete in debate tournament • Chess team loses • Kershner does dialect in fourth lit readinghttps://digitalcommons.ursinus.edu/weekly/1554/thumbnail.jp
Ancylostoma ceylanicum Hookworm in Myanmar Refugees, Thailand, 2012–2015
During 2012–2015, US-bound refugees living in Myanmar– Thailand border camps (n = 1,839) were surveyed for hookworm infection and treatment response by using quantitative PCR. Samples were collected at 3 time points: after each of 2 treatments with albendazole and after resettlement in the United States. Baseline prevalence of Necator americanus hookworm was 25.4%, Ancylostoma duodenale 0%, and Ancylostoma ceylanicum (a zoonosis) 5.4%. Compared with N. americanus prevalence, A. ceylanicum hookworm prevalence peaked in younger age groups, and blood eosinophil concentrations during A. ceylanicum infection were higher than those for N. americanus infection. Female sex was associated with a lower risk for either hookworm infection. Cure rates after 1 dose of albendazole were greater for A. ceylanicum (93.3%) than N. americanus (65.9%) hookworm (p\u3c0.001). Lower N. americanus hookworm cure rates were unrelated to β-tubulin single-nucleotide polymorphisms at codons 200 or 167. A. ceylanicum hookworm infection might be more common in humans than previously recognized
Finite Size Scaling and Critical Exponents in Critical Relaxation
We simulate the critical relaxation process of the two-dimensional Ising
model with the initial state both completely disordered or completely ordered.
Results of a new method to measure both the dynamic and static critical
exponents are reported, based on the finite size scaling for the dynamics at
the early time. From the time-dependent Binder cumulant, the dynamical exponent
is extracted independently, while the static exponents and
are obtained from the time evolution of the magnetization and its higher
moments.Comment: 24 pages, LaTeX, 10 figure
Health Status of Visitors and Temporary Residents, United States
Education, policy, and interventions to promote visitor health are needed
- …