[Results of the first All-Russian consensus conference on bariatric surgery].

Until now, there has not been organized consensus for standardization in bariatric surgery In Russia. We present the results of the first Bariatric Surgery Consensus Conference conducted in Barnaul (March, 2023). A list of questions was proposed within 6 blocks: 1) general issues of bariatric surgery, 2) sleeve gastrectomy, 3) one-anastomosis gastric bypass («mini-gastric bypass»), 4) Roux-en-Y Gastric Bypass, 5) Single Anastomosis Duodenal Switch and other options for biliopancreatic bypass, 6) rare procedures.

Methyl and Ethyl Ethers of Glycerol as Potential Green Low-Melting Technical Fluids.

The study is dedicated to the consideration of lower alkyl ethers of glycerol as potential components of low-melting technical fluids (e.g., heat transfer fluids, hydraulic fluids, aircraft de-icing fluids, etc.

[Experience of successful laparoscopic sleeve resection of the stomach and treatment of morbid obesity in a patient with a classic form of congenital adrenal dysfunction].

The article presents a clinical observation of a patient with congenital adrenal dysfunction (CHD), a salt-losing form of 21-hydroxylase enzyme deficiency (homozygous mutation I 172N), and also with morbid obesity, due to long-term use of high doses of glucocorticosteroids, who underwent bariatric surgery - laparoscopic sleeve resection of the stomach. A feature of the presented case is the elimination of one of the causes of decompensation of the disease, namely, overweight, as well as insulin resistance, which requires the intake of large doses of glucocorticoids, which in turn leads to a worsening of the course of obesity, thereby causing a vicious circle. 7 months after surgical treatment, the goal was achieved - a reduction in the dose of Prednisolone by 25%, with a decrease in body weight by 72.

Catalytic Design of Matrix-Isolated Ni-Polymer Composites for Methane Catalytic Decomposition.

Targeted synthesis of C/composite Ni-based material was carried out by the method of matrix isolation. The composite was formed with regard to the features of the reaction of catalytic decomposition of methane. The morphology and physicochemical properties of these materials have been characterized using a number of methods: elemental analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, temperature programmed reduction (TPR-H), specific surface areas (SSA), thermogravimetric analysis, and differential scanning calorimetry (TGA/DSC).

Mitigation of Physical Aging of Polymeric Membrane Materials for Gas Separation: A Review.

The first commercial hollow fiber and flat sheet gas separation membranes were produced in the late 1970s from the glassy polymers polysulfone and poly(vinyltrimethyl silane), respectively, and the first industrial application was hydrogen recovery from ammonia purge gas in the ammonia synthesis loop. Membranes based on glassy polymers (polysulfone, cellulose acetate, polyimides, substituted polycarbonate, and poly(phenylene oxide)) are currently used in various industrial processes, such as hydrogen purification, nitrogen production, and natural gas treatment. However, the glassy polymers are in a non-equilibrium state; therefore, these polymers undergo a process of physical aging, which is accompanied by the spontaneous reduction of free volume and gas permeability over time.