01606 mmol/L. Thus, 1D U-net is a viable candidate for calibration-transfer applications to LF-NMR instruments.Hydrogel-based electronics have received growing attention because of their great flexibility and stretchability. However, the fabrication of conductive hydrogels with high stretchability, excellent toughness, outstanding sensitivity, and low-temperature stability still remains a great challenge. In this study, a type of conductive hydrogels consisting of a double network (DN) structure is synthesized. The dynamically cross-linked chitosan (CS) and the flexible polyacrylamide network doped with polyaniline constitute the DN through the hydrogen bonds between the hydroxyl, amide, and aniline groups. This type of hydrogels displays excellent mechanical performance, striking conductivity, and remarkable freezing tolerance. Selleck SANT-1 The flexible electronic sensors based on the double-network hydrogels demonstrate superior strain sensitivity and linear response on various deformations. Additionally, the good antifreezing property of the hydrogels allows the sensors to exhibit excellent performance at -20 °C.Electrically conductive membranes have shown significant promise in combining conventional separations with in situ contaminant oxidation, but little has been done to consider chlorine removal. This study demonstrates the simultaneous chlorine removal and oxidation of organic compounds during filtration using an electrochemically assisted electrically conductive carbon nanotube (CNT) membrane. As much as 80% of chlorine was removed in the feed by CNT membranes at the initial phase of continuous filtration. The efficacy of these CNT membranes toward chlorine removal was dependent on the mass of CNTs within the membranes and the applied pressure to the membranes, indicating the central role of available CNT active sites and sufficient reaction time. Furthermore, the removal mechanism of chlorine by CNTs was revealed by studying the degradation of benzoic acid and cyclic voltammetry on the membrane surface. Reactive oxidants were generated by the reductive decomposition of chlorine through the catalytic interaction with CNTs. Subsequently, electrical potentials were applied to the CNT membrane surfaces during the filtration of chlorinated feed waters. The simultaneous decomposition of chlorine and oxidation of benzoic acid were significantly enhanced by applying a cathodic current to CNT membranes enabling continuous dechlorination. The cathodic current applied to CNT membranes is believed to regenerate CNT membranes by providing electrons for the reductive decomposition of chlorine. In situ chemical-free dechlorination coupled with membrane filtration offers great opportunity to reducing the environmental impact of desalination, while maximizing the lifetime of reverse osmosis membranes and demonstrating greener approaches available to industrial water treatment.Tricuspid leaflet lesion following infective endocarditis is a severe condition requiring surgical treatment in most cases. Currently, tricuspid valve replacement with mechanical prosthesis is still essential in the treatment of patients ineligible for reconstructive surgery or bioprosthesis implantation. The authors describe redo tricuspid valve replacement with mechanical prosthesis for repeated early bioprosthetic valve failure.There is more than 58-year experience of surgical treatment of patients with intracardiac myxomas at the Petrovsky National Research Center of Surgery. Primary delayed growth of the right and left atrial myxoma after 21 years and 5 months was observed only in 1 (0.36%) patient. Transthoracic echocardiography was used for diagnosis of tumors. Tumors were totally resected including adjacent parts of myocardium or subendocardial tissue with subsequent cautery. In-hospital mortality was absent. There were no recurrent myxomas throughout subsequent 10-year follow-up.Lung sequestration is a congenital malformation represented by a non-functioning pulmonary parenchyma supplied via an aberrant artery of systemic circulation. This malformation makes up 1-6% of all congenital lung abnormalities. In 1946, Pryce M.D. proposed the term «lung sequestration» for the disease first described by the Austrian pathologist C. Rokitansky in 1856. Lung sequestration becomes quire common due to development and availability of X-ray diagnostic methods. An aberrant artery can arise from the great vessels (thoracic and abdominal aorta) and smaller arteries (coronary, intercostal arteries). To date, there are 2 forms of lung sequestration (intralobar and extralobar). We report one of the options for surgical treatment of lung sequestration.Differential diagnosis of pulmonary infiltrates is difficult due to the absence of specific clinical and radiological manifestations. Differential diagnosis of pulmonary infiltrates usually includes the following «triad» pneumonia, tuberculosis, lung cancer. Diagnosis of pulmonary tuberculosis is based on microbiological examination of sputum and bronchoscopic respiratory samples – bronchial washing and bronchoalveolar lavage. Efficiency of molecular genetic methods (including express tests) in detecting M. tuberculosis DNA can reach 91-98%. Therefore, treatment may be started without data of microbiological examination. Nevertheless, there are rare cases of false-positive results of PCR in patients with non-tuberculous lung lesions. This aspect often results false diagnosis and delayed verification of true cause of lung lesion. Another adverse effect is associated with anti-tuberculosis therapy. Endoscopic transbronchial lung biopsy and its modern version (transbronchial cryobiopsy) as a minimally invasive diagnostic procedure are performed in such patients. These methods require a sufficiently high experience and qualification of specialist and following such aspects as navigation techniques and balloon bronchial blocking. We present this clinical case as a demonstration of modern possibilities of multimodal navigational bronchoscopic diagnosis with transbronchial cryobiopsy for local pulmonary infiltrate.Lung transplantations have been regularly performed in the Russian Federation since 2010. Therefore, the number of lung transplant recipients, as well as the number of patients with airway complications following lung transplantation has been increasing. Treatment of these patients takes place not only in transplantation centers, but also in other hospitals. This review is devoted to risk factors, clinical manifestations, treatment and prevention of airway complications after lung transplantation. We analyzed literature data over the last 15 years. It was confirmed that bronchoscopy is a «gold standard» for diagnosis of airway complications while bronchoscopic interventions are preferred for treatment. Balloon and rigid bronchodilation and endoscopic airway stenting are the most effective interventions. Silicone stents are the most optimal. Antimicrobial prophylaxis and timely use of antiproliferative immunosuppressive drugs are important factors in prevention and treatment of airway complications after lung transplantation.