We report the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) on argon using a liquid argon detector at the Oak Ridge National Laboratory Spallation Neutron Source. Two ...independent analyses prefer CEvNS over the background-only null hypothesis with greater than 3σ significance. The measured cross section, averaged over the incident neutrino flux, is (2.2±0.7)×10^{-39} cm^{2}-consistent with the standard model prediction. The neutron-number dependence of this result, together with that from our previous measurement on CsI, confirms the existence of the CEvNS process and provides improved constraints on nonstandard neutrino interactions.
Objective
To evaluate the association between maternal fructosamine levels at the time of delivery and stillbirth.
Design
Secondary analysis of a case–control study.
Setting
Multicentre study of five ...geographic catchment areas in the USA.
Population
All singleton stillbirths with known diabetes status and fructosamine measurement, and representative live birth controls.
Main outcome measures
Fructosamine levels in stillbirths and live births among groups were adjusted for potential confounding factors, including diabetes. Optimal thresholds of fructosamine to discriminate stillbirth and live birth.
Results
A total of 529 women with a stillbirth and 1499 women with a live birth were included in the analysis. Mean fructosamine levels were significantly higher in women with a stillbirth than in women with a live birth after adjustment (177 ± 3.05 versus 165 ± 2.89 μmol/L, P < 0.001). The difference in fructosamine levels between stillbirths and live births was greater among women with diabetes (194 ± 8.54 versus 162 ± 3.21 μmol/L), compared with women without diabetes (171 ± 2.50 versus 162 ± 2.56 μmol/L). The area under the curve (AUC) for fructosamine level and stillbirth was 0.634 (0.605–0.663) overall, 0.713 (0.624–0.802) with diabetes and 0.625 (0.595–0.656) with no diabetes.
Conclusions
Maternal fructosamine levels at the time of delivery were higher in women with stillbirth compared with women with live birth. Differences were substantial in women with diabetes, suggesting a potential benefit of glycaemic control in women with diabetes during pregnancy. The small differences noted in women without diabetes are not likely to justify routine screening in all cases of stillbirth.
Tweetable
Maternal serum fructosamine levels are higher in women with stillbirth than in women with live birth, especially in women with diabetes.
Tweetable
Maternal serum fructosamine levels are higher in women with stillbirth than in women live birth, especially in women with diabetes.
The Holi eld Radioactive Ion Beam Facility, located in Oak Ridge, Tennessee, is operated as a National User Facility for the U.S. Department of Energy, producing high quality ISOL beams of ...short-lived, radioactive nuclei for studies of exotic nuclei, astrophysics research, and various societal applications. The primary driver, the Oak Ridge Isochronous Cyclotron, produces rare isotopes by bombarding highly refractory targets with light ions. The radioactive isotopes are ionized, formed into a beam, mass selected, injected into the 25-MV Tandem, accelerated, and used in experiments. This article reviews HRIBF and its science.
The fusion excitation functions for radioactive (132)Sn + (58)Ni and stable (130)Te + (58,64)Ni were measured at energies near the Coulomb barrier. The coupling of transfer channels in heavy-ion ...fusion was examined through a comparison of Sn + Ni and Te + Ni systems, which have large variations in the number of positive Q-value nucleon transfer channels. In contrast with previous experimental comparisons, where increased sub-barrier fusion cross sections were observed in systems with positive Q-value neutron transfer channels, the reduced excitation functions were equivalent for the different Sn + Ni and Te + Ni systems. The present results suggest a dramatically different influence of positive Q-value transfer channels on the fusion process for the Sn + Ni and Te + Ni systems.
During November and December 1995 the First Aerosol Characterization Experiment (ACE 1) was undertaken as part of the International Global Atmospheric Chemistry (IGAC) Program. A key objective of the ...aircraft component of this experiment included the identification of source regions for new particles in the remote marine atmosphere. No evidence was found for particle production in the marine boundary layer (MBL), but extensive observations of enhanced layers of “new” particles were found in the free troposphere (FT). These layers were generally found at altitudes that corresponded to nearby cloud top heights and exhibited concentrations that exceeded MBL air by about 1000 to 10,000 cm−3. Many layers were also associated with enhanced concentrations of water vapor and sulfuric acid. Focused cloud experiments demonstrated that these particles were recently formed and originated in the outflow region of clouds preferentially after late morning when photochemical processes had become sufficiently active. The production and growth of these particles were rapid, and they appeared to evolve and merge with a background nuclei spectra on the scale of hours to a day. These measurements in midlatitude postfrontal air undergoing shallow convection indicated that particles were produced in the trailing cloud outflow region as low as 2 km altitude and that the base of this layer extended down to the inversion in the region of postfrontal subsidence. Other ACE 1 measurements made in transit near equatorial convection also revealed small nuclei aloft at altitudes up to 6 km and a trend in decreasing concentrations, in conjunction with steadily increasing size, during descent toward the surface. The concentration and size distributions in this these regions indicate that significant numbers of new nuclei are formed aloft in various cloud outflow regions and that they can provide a source for the MBL aerosol via subsidence. This nucleation appears to be favored when existing surface areas approach or drop below about 5–10 μm2 cm−3.
This trial assessed the utility of preoperative urodynamic testing in women with uncomplicated stress–predominant urinary incontinence. Women having office evaluation alone had 1-year ...treatment-success rates noninferior to those of women also having urodynamic testing.
In the United States in 2010, approximately 260,000 women underwent surgical treatment of stress urinary incontinence.
1
Urodynamic studies, which assess physiological variables during bladder storage and emptying, are often performed preoperatively to confirm and characterize the clinical features of stress urinary incontinence or to guide decisions about modifications in treatment.
2
–
4
However, these studies have not been shown to improve surgical outcomes, they are uncomfortable and costly (payments allowed by Medicare are greater than $500 for the three-part study),
5
and they increase the risk of urinary tract infection.
6
A Cochrane review
7
and the National Institute for Health and Clinical Excellence . . .
We present new limits on exotic keV-scale physics based on 478 kg d of Majorana Demonstrator commissioning data. Constraints at the 90% confidence level are derived on bosonic dark matter (DM) and ...solar axion couplings, Pauli exclusion principle violating (PEPV) decay, and electron decay using monoenergetic peak signal limits above our background. Our most stringent DM constraints are set for 11.8 keV mass particles, limiting g_{Ae}<4.5×10^{-13} for pseudoscalars and (α^{'}/α)<9.7×10^{-28} for vectors. We also report a 14.4 keV solar axion coupling limit of g_{AN}^{eff}×g_{Ae}<3.8×10^{-17}, a 1/2β^{2}<8.5×10^{-48} limit on the strength of PEPV electron transitions, and a lower limit on the electron lifetime of τ_{e}>1.2×10^{24} yr for e^{-}→ invisible.
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