Nuclear transparency from quasielastic A(e,e'p) reactions uo to Q^2=8.1 (GeV/c)^2

The quasielastic (e,e$^\prime$p) reaction was studied on targets of deuterium, carbon, and iron up to a value of momentum transfer $Q^2$ of 8.1 (GeV/c)$^2$. A nuclear transparency was determined by comparing the data to calculations in the Plane-Wave Impulse Approximation. The dependence of the nuclear transparency on $Q^2$ and the mass number $A$ was investigated in a search for the onset of the Color Transparency phenomenon. We find no evidence for the onset of Color Transparency within our range of $Q^2$. A fit to the world's nuclear transparency data reflects the energy dependence of the free proton-nucleon cross section.Comment: 11 pages, 6 figure

Placenta accreta and maternal morbidity in the Republic of Ireland, 2005-2010

Item does not contain fulltextAbstract Objective: To describe the nationwide prevalence of placenta accreta and to quantify its impact on maternal morbidity. Methods: Using discharge data for public hospitals in Ireland, years 2005-2010, deliveries with placenta accreta were identified using ICD-10-AM code for morbidly adherent placenta and compared with deliveries without the condition. Adjusted odds ratios (aOR) and 95% confidence intervals (CI) were estimated using logistic regression. Results: Placenta accreta prevalence increased 34% from 2005 to 2010 (7.9/10 000 deliveries versus 10.6/10 000 deliveries). This condition was associated with a substantial increased risk of hemorrhage (aOR: 16.6, 95% CI: 13.4-20.5), hysterectomy (aOR: 950.6, 95% CI: 632.9-1427.9), procedures to reduce uterine blood flow (aOR: 72.4, 95% CI: 35.1-149.4), transfusion (aOR: 41.8, 95% CI: 33.4-52.2), anemia (aOR 15.1, 95% CI: 10.8-21.0), abdominal organ injury (aOR: 8.2, 95% CI: 5.2-13.1), bladder surgery (aOR: 38.5, 95% CI: 21.8-68.1), mechanical ventilation (aOR: 63.2, 95% CI: 28.4-140.6), intensive care unit admission (aOR: 41.3, 95% CI: 30.0-56.9), and co-existing placenta previa (aOR: 23.2, 95% CI: 16.8-31.8) as well as increased risk of cesarean section, longer hospitalization and stillbirth. Conclusions: To our knowledge, this is the first study to use a comparison group of deliveries without placenta accreta and quantitatively illustrate with odds ratios the profound adverse health effects of this condition on the mother

Response of a mechanical oscillator in solid 4He

We present the first measurements of the response of a mechanical oscillator in solid 4He. We use a lithium niobate tuning fork operating in its fundamental resonance mode at a frequency of around 30 kHz. Measurements in solid 4He were performed close to the melting pressure. The tuning fork resonance shows substantial frequency shifts on cooling from around 1.5 K to below 10 mK. The response shows an abrupt change at the bcc-hcp transition. At low temperatures, below around 100 mK, the resonance splits into several overlapping resonances