Ultra-monochromatic far-infrared Cherenkov diffraction radiation in a super-radiant regime.

Nowadays, intense electromagnetic (EM) radiation in the far-infrared (FIR) spectral range is an advanced tool for scientific research in biology, chemistry, and material science because many materials leave signatures in the radiation spectrum. Narrow-band spectral lines enable researchers to investigate the matter response in greater detail. The generation of highly monochromatic variable frequency FIR radiation has therefore become a broad area of research.

[Pancreatoduodenal resection with preservation of the pylorus].

Experience with 106 pancreatoduodenal resections (PDR) with pylorus savage for tumors and benign diseases of pancreatic head and periampullar zone is analyzed. Features of mobilization of pancreatoduodenal complex in PDR are shown. They permit to reduce the rate of complications (gastrostasis).

[Assessment of pancreatoduodenal resection completion methods].

The nearest outcomes of 305 pancreatoduodenal resections (PDR) for malignant and benign diseases of the pancreas head and periampullar zone are presented. Necessity of differential approach to choice of method of pancreatodigestive anastomosis formation is demonstrated. In unectatic main duct of the pancreas and unchanged pancreatic parenchyma there is a high risk of postoperative pancreatitis and lethal outcome which achieved 29.