Publications by authors named "H U Frey"

We demonstrate the reconstruction of the instantaneous polarization state of ultrafast laser pulses through vectorial time-domain ptychography. We introduce the formalism, investigate the algorithm's capacities through simulations, and finally validate it by reconstructing several polarization states from experiments.

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  • Shoulder dystocia is a childbirth complication linked to neonatal problems, with higher maternal prepregnancy body mass index (BMI) recognized as a risk factor, but the impact of BMI on neonatal outcomes specifically after shoulder dystocia isn't thoroughly researched.
  • This study aimed to explore the relationship between maternal prepregnancy BMI and neonatal adverse outcomes following shoulder dystocia, including the frequency and types of delivery maneuvers used based on the mother's BMI.
  • Analyzing data from 872 cases of shoulder dystocia, the results showed no significant difference in the duration of the complication across BMI groups, although those with a BMI ≥35 kg/m faced more delivery challenges requiring specific maneuvers. *
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  • - The study aimed to see if treating mild chronic hypertension (CHTN) during pregnancy would lead to fewer unplanned healthcare visits after childbirth.
  • - An analysis of 2,293 pregnant patients showed that overall unplanned healthcare utilization rates were similar between the treatment and control groups, though emergency visits were notably lower in the treated group.
  • - Factors like higher BMI and cesarean deliveries were found to increase the likelihood of needing unplanned postpartum care, even though treating mild CHTN showed some specific benefits.
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Polymer stereocomplex formation represents a promising research area as it can improve thermal and mechanical properties of co-crystallized polymer strands of opposite chirality. Polymers that form stereocomplexes commonly feature high stereoregularity and usually require sourcing from enantiopure monomer building blocks. Herein, we report the in situ polyether stereocomplex formation from racemic epoxide monomers, i.

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Background: The Chronic Hypertension and Pregnancy Study demonstrated that a target blood pressure of <140/90 mm Hg during pregnancy is associated with improved perinatal outcomes. Outside of pregnancy, pharmacologic therapy for patients with diabetes and hypertension is adjusted to a target blood pressure of <130/80 mm Hg. During pregnancy, patients with both diabetes and chronic hypertension may also benefit from tighter control with a target blood pressure <130/80 mm Hg.

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