Tissue oxygenation through combined laser and ultrasound action

The results in vivo investigation biophotonics of laser-induced photodissociation of oxyhemoglobin in cutaneous blood vessels and its role in biomedical processes are presented. It is shown that in order to make the methods of phototherapy as well as laser therapy really efficient one has to control the oxygen concentration in tissue keeping it at the necessary level. Perspectives of combined laser-ultrasound application for improving oxygen diffusion are discussed

Opto-Acoustic Method of Tissue Oxygenation and its Biomedical Application

Novel opto-acoustic method of tissue oxygenation and restoring normal cell metabolism is proposed. The results of in vivo investigation the phenomenon of laser-induced photodissociation of blood oxyhemoglobin and its biomedical applications are presented. Photodissociation of oxyhemoglobin, the main biological function of which is oxygen transportation gives a unique possibility of additional oxygen extraction for restoring normal cell metabolism. Optical method of determination the therapeutic “dose” based on the response of changes in tissue oxygen concentration in dependence on wavelength and intensity of laser radiation has been developed. It is shown that in order to make the methods of phototherapy as well as laser therapy really efficient one has to control the oxygen concentration in tissue keeping it at the necessary level

Tissue oxygenation through combined laser and ultrasound action

The results in vivo investigation biophotonics of laser-induced photodissociation of oxyhemoglobin in cutaneous blood vessels and its role in biomedical processes are presented. It is shown that in order to make the methods of phototherapy as well as laser therapy really efficient one has to control the oxygen concentration in tissue keeping it at the necessary level. Perspectives of combined laser-ultrasound application for improving oxygen diffusion are discussed

Использование цифрового двойника солнечной панели для анализа выработки электроэнергии солнечной электростанцией

A method of PV array-based calculation has been proposed, implemented and tested. The results showed the following. Array-based calculation is able to provide quite accurate results in Pmpp values for array, but defective modules with some electrical issues in particular array could be identified only with some additional modulebased analysis

The orbit rigidity matrix of a symmetric framework

A number of recent papers have studied when symmetry causes frameworks on a graph to become infinitesimally flexible, or stressed, and when it has no impact. A number of other recent papers have studied special classes of frameworks on generically rigid graphs which are finite mechanisms. Here we introduce a new tool, the orbit matrix, which connects these two areas and provides a matrix representation for fully symmetric infinitesimal flexes, and fully symmetric stresses of symmetric frameworks. The orbit matrix is a true analog of the standard rigidity matrix for general frameworks, and its analysis gives important insights into questions about the flexibility and rigidity of classes of symmetric frameworks, in all dimensions. With this narrower focus on fully symmetric infinitesimal motions, comes the power to predict symmetry-preserving finite mechanisms - giving a simplified analysis which covers a wide range of the known mechanisms, and generalizes the classes of known mechanisms. This initial exploration of the properties of the orbit matrix also opens up a number of new questions and possible extensions of the previous results, including transfer of symmetry based results from Euclidean space to spherical, hyperbolic, and some other metrics with shared symmetry groups and underlying projective geometry.Comment: 41 pages, 12 figure

Centerscope

Centerscope, formerly Scope, was published by the Boston University Medical Center "to communicate the concern of the Medical Center for the development and maintenance of improved health care in contemporary society.

Оптический метод и аппаратура для дезинтоксикации отравляющего действия угарного газа

Optical technology of elimination the poisoning effect of carbon monoxide (CO) is proposed. This technology is based on the phenomenon of laser-induced photodissociation of carboxyhemoglobin in the blood vessels and capillaries. By numerical modeling of laser tissue interaction the carboxyhemoglobin and oxyhemoglobin action spectra in skin blood vessels are calculated. The criteria of effective ways of elimination the toxic action of carboxyhemoglobin under direct irradiation it on pulmonary alveoli, through the skin, intravenously and extracorporeal irradiation are considered.Предложен и рассмотрен оптический метод устранения отравляющего действия угарного газа СО. Разработанный метод основан на явлении лазерно-индуцированной фотодиссоциации карбоксигемоглобина (HbCO) в кровеносных сосудах и капиллярах. Установлены критерии эффективности лазерно­индуцированной фотодиссоциации HbCO в крови при непосредственном облучении легочных альвеол, через кожный покров и внутривенно. Показано, что при воздействии на HbCO излучением видимого диапазона на длине волны 514,5 нм наблюдается снижение его концентрации на 15% в течение 10 мин, что обеспечило разработку высокоэффективного оптического способа и устройства устранения отравляющего действия СО

СРЕДСТВА ДИАГНОСТИКИ И УПРАВЛЕНИЯ КИНЕМАТИКОЙ, ИНТЕГРИРОВАННЫЕ В ПОДШИПНИК КАЧЕНИЯ

The concept and possible variants of mechatronic bearings designs of the fourth generation with sensors of angular position and tiny vibroresonance drives for kinematics management during the working process, with built-in diagnostics aid functioning on the basis of the analysis of separator rotation speed fluctuations have been offered.Предложены концепция и возможные варианты конструкций мехатронных подшипников 4-го поколения, имеющих встроенные средства диагностики на основе анализа колебаний скорости вращения сепаратора, датчики углового положения и миниатюрные виброрезонансные приводы для управления кинематикой в процессе работы