Simulating magnetic field of a ferromagnetic pipe underwater in COMSOL Multiphysics

Nowadays ecological situation in seas and oceans requires permanent supervision and control. Carrying out building activity such as building hydraulic structures, oil- and gas-pipes in areas of past warfare is the reason for the active usage of geophysical methods to search method of the objects underwater. The paper examines the classification of magnetic search methods and theoretical base statements of electromagnetics. The work represents the investigation of an object influence on geomagnetic field in problem-solving environment "COMSOL Multiphysics". The article also contains the results of simulating for variations of different object parameters. This paper is connected with the magnetometric

Simulating magnetic field of a ferromagnetic pipe underwater in COMSOL Multiphysics

Nowadays ecological situation in seas and oceans requires permanent supervision and control. Carrying out building activity such as building hydraulic structures, oil- and gas-pipes in areas of past warfare is the reason for the active usage of geophysical methods to search method of the objects underwater. The paper examines the classification of magnetic search methods and theoretical base statements of electromagnetics. The work represents the investigation of an object influence on geomagnetic field in problem-solving environment "COMSOL Multiphysics". The article also contains the results of simulating for variations of different object parameters. This paper is connected with the magnetometric

CHARACTERISTICS OF CORONARY ATHEROSCLEROSIS IN PATIENTS WITH RHEUMATOID ARTHRITIS

Purpose of this study was examination of the features of coronary vessels in patients with rheumatoid arthritis (RA) using CT angiography. Materials and Methods: results of CT angiographic studies of 60 patients with varying degrees of coronary vessels pathology were retrospectively analyzed. 27 of them had a history of RA. The control group included 33 patients who had no medical history and clinical symptoms of rheumatic disease. The degree of calcification of the coronary arteries was calculated according to the Agatston degree. Processing of the results was carried out on Excel and Statistica 6.0. Results: The study found that coronary calcification in the control group patients averaged 289, and in patients with RA 305 HU (