Biomedicines
February 2024
The effect of an extremely low frequency alternating magnetic field (ELF AMF) at frequencies of 17, 48, and 95 Hz at 100 mT on free and internalized 4T1 breast cancer cell submicron magnetic mineral carriers with an anticancer drug, mitoxantrone, was shown. The alternating magnetic field (100 mT; 17, 48, 95 Hz; time of treatment-10.5 min with a 30 s delay) does not lead to the significant destruction of carrier shells and release of mitoxantrone or bovine serum albumin from them according to the data of spectrophotometry, or the heating of carriers in the process of exposure to magnetic fields.
View Article and Find Full Text PDFAim Comparative analysis of the effectiveness of a new approach, "SMART rehabilitation of patients after heart valve replacement", which includes, in addition to face-to-face training, Internet technologies in the form of video conferencing, the mobile application "Calculation of the warfarin dose", and a traditional program for educating patients after correction of valvular defects.Material and methods The study included 190 patients with prosthetic heart valves. The main group consisted of 98 patients who completed a distance learning course.
View Article and Find Full Text PDFThe annual production of plastic waste is a serious ecological problem as it causes substantial pollution of the environment. Polyethylene terephthalate, a material usually found in disposable plastic bottles, is one of the most popular material used for packaging in the world. In this paper, it is proposed to recycle polyethylene terephthalate waste bottles into benzene-toluene-xylene fraction using a heterogeneous nickel phosphide catalyst formed in situ during the polyethylene terephthalate recycling process.
View Article and Find Full Text PDFPolymers (Basel)
January 2023
Hybrid composites based on electroactive polymers of diphenylamine-2-carboxylic acid (PDPAC) and highly porous carbon with a hierarchical pore structure were prepared for the first time. Activated IR-pyrolyzed polyacrylonitrile (IR-PAN-a), characterized by a highly developed surface, was chosen as a highly porous N-doped carbon component of the hybrid materials. IR-PAN-a was prepared using pyrolysis of polyacrylonitrile (PAN) in the presence of potassium hydroxide under IR radiation.
View Article and Find Full Text PDFAn array of highly oriented anatase nanoparticles was successfully prepared from NHTiOF with the assistance of polyetheleneglycol-400 at 450 °C. The study showed the stability of obtained layered TiO-anatase close to 1200 °C. This research confirmed for the first time that the transition of mesocrystalline anatase to the rutile phase occurs between 1000 °C and 1200 °C, which is more than 400 °C higher than the transition of bulk TiO due to the used precursor.
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