A NOVEL BCG SENSOR-ARRAY FOR UNOBTRUSIVE CARDIAC MONITORING

Unobtrusive heart rate monitoring is a popular research topic in biomedical engineering. The reason is that convential methods, e.g. the clinical gold standard electrocardiography, require conductive contact to the human body. Other methods such as ballistocardiography try to record these vital signs without electrodes that are attached to the body. So far, these systems cannot replace routine procedures. Most systems have some drawbacks that cannot be compensated, such as aging of the sensor materials or movement artifacts. In addition, the signal form differs greatly from an ECG, which is an electrical signal. The ballistocardiogram has a mechanical source, which makes it harder to evaluate. We have developed a new sensor array made of near-IR-LEDs to record BCGs. IR-sensors do not age in relevant time scales. Analog filtering was neccesary, because the signal amplitude was very small. The digitized data was then processed by various algorithms to extract beat-to-beat or breath-to-breath intervals. The redundancy of multiple BCG channels was used to provide a robust estimation of beat-to-beat intervals and heart rate. We installed the system beneath a mattress topper of a hospital bed, but any other bed would have been sufficient. The validation of this measurement system shows that it is well suited for BCG recordings. The use of multiple channels has proven to be superior to relying on a single BCG channel

ТОВАРИСЬКИЙ ГУРТОК ІНЖЕНЕРІВ КАТЕРИНОСЛАВСЬКОГО РАЙОНУ: СТВОРЕННЯ, ВІДКРИТТЯ Й ПЕРШІ РОКИ ДІЯЛЬНОСТІ (1908-1910 РР.)

Досліджено історію створення та відкриття Товариського гуртка інженерів Катеринославського регіону (ТГІКр).(ТГІКр).; The history of creation and opening of Yekaterinoslav engineers group (YEG) is investigated

Non-Contact Monitoring of Heart and Lung Activity by Magnetic Induction Measurement

In many clinical applications, the monitoring of heart and lung activity is of vital importance. State-of-the-art monitoring involves the use of electrodes or other contact based sensors (electrocardiogram (ECG), impedance cardiography (ICG), pulse oximetry or equivalent). With the equipment that is used, side effects like skin irritation, difficult application or additional cabling may occur. In contrast, this paper describes a method for non-contact monitoring of heart and lung activity, which is solely based on magnetic induction. This method allows simultaneous monitoring of heart and lung activity, and has the potential of an integrated application in a personal healthcare scenario. To illustrate the performance, a simple test-setup has been developed and the first results are presented here (some of which have been previously presented on the Poster 2008 [10]).

Modeling and researching the process of plasmachemical recycling of oil wastes based on polychlorinated biphenyls

Theses represents results on thermodynamic simulation of plasmachemical recycling of dielectric oil wastes in air plasma in form of water-organic compositions having optimal composition, lower calorific value minimum 8,4 MJ/kg and adiabatic combustion temperature minimum 1200 °С

ДИСКРЕТНО-ПЛАСТИЧНА МОДЕЛЬ СЕРЕДОВИЩА ПРОЦЕСУ РОЛИКОВОГО ФОРМУВАННЯ ЗАТРУБНОГО ПРОСТОРУ ТУНЕЛЮ

У статті розглянута дискретно-пластична модель середовища процесу роликового формування затру- бного простору тунелю. В статье рассмотренная дискретно-пластичная модель среды процесса роликового формирования за- трубного пространства тоннел

The Advocate

Birnbaum Wins Keefe Award; Favors Moot Court Board; The Return of the Death Penaltyhttps://ir.lawnet.fordham.edu/student_the_advocate/1057/thumbnail.jp