Maternal and Neonatal Hemorrhage From Vitamin K Deficiency in the Setting of Crohn Disease in Pregnancy.

Background: Patients with inflammatory bowel disease, particularly Crohn disease (CD), are at increased risk of fat malabsorption and fat-soluble vitamin deficiencies. Vitamin K is a fat-soluble vitamin that plays a critical role in blood coagulation. Vitamin K deficiency during pregnancy can lead to severe maternal and neonatal hemorrhagic complications.

The Sikkim flood of October 2023: Drivers, causes and impacts of a multihazard cascade.

On 3 October 2023, a multihazard cascade in the Sikkim Himalaya, India, was triggered by 14.7 million m of frozen lateral moraine collapsing into South Lhonak Lake, generating an ~20 m tsunami-like impact wave, breaching the moraine, and draining ~50 million m of water. The ensuing Glacial Lake Outburst Flood (GLOF) eroded ~270 million m of sediment, which overwhelmed infrastructure, including hydropower installations along the Teesta River.

THz-induced gas alignment in dispersionless field enhancing waveguides.

We demonstrate a versatile THz waveguide platform for tailored THz-induced orientation and alignment of gas molecules. The underlying waveguide structure is dispersionless, with a refractive index close to one, and enhances the electric as well as the magnetic field up to a factor of five. These properties increase the detected transient birefringence signal by more than an order of magnitude compared to conventional THz free space focusing.

Time-domain vector ptychography.

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.