Heartbeat-induced oscillations in the chest area are extracted from ultrasonic measurements in the literature and animal tests. The feasibility of using linear energy harvesting technologies at regular and microscales is investigated. To increase the frequency bandwidth of the energy harvester and to ...
Breezy is best experienced laying or sitting down with the phone in the middle of your chest. You can experiment with different parts of your body to find the most comfortable and impactful location for you. For a stronger sensation, hold the phone in place. You can also just hold the pho...
AUC = area under the curve; CI = confidence interval; gbm = gradient-boosting machine. (A) Area under the curve and 95% confidence interval as a function of the number of top variables selected and used in a gradient-boosted tree model. The red line denotes that a model consisting of ...
The luminal area is reduced by a stenosis; therefore the flow velocity in the throat of the stenosis is increased. This local increase in the flow velocity creates a post-stenotic jet, if the post-stenotic expanse region is not sufficiently streamlined to prevent flow separation (i.e., the...
Generally speaking, the first heart "sound" in a complete cardiac cycle is that which is phonetically and usually represented as "lubb." It seems to be the consensus that this sound is produced by vibrations set up by the 5 heart striking against the chest wall, augmented or modified ...
The inherent ability of ventricular myocardium to increase its force of contraction in response to an increase in contraction frequency is known as the cardiac force-frequency relation (FFR). This relation can be easily obtained in the stress echo lab, where the force is computed as the systolic...
the image it brings is of her clutching her chest in pain from a heart attack or of her with tubes attached to her mouth and chest after a heart artery bypass procedure. Thinking, focusing, and acting in advocacy against disease project the image of departure from health, of hospitals, pil...
in synchronized tracings (FIGS. 2 and 3). The time-linked relationship indicates consistency between the chest-recorded cardiac-generated electrical signals and the wrist-recorded flow-generated pulse waves. The flow-generated pulse waves often appear in shape of a “W” possibly reflecting soft ...
The main research objectives in this area are: Increasing the current knowledge of vibration characteristics of infants in baby carriages; Increasing the current knowledge of vibration effects (amplitude, frequency, exposure time) on infants’ health. It should be noted that in the international ...
These sensors are placed on the surface of the chest to detect heart-induced local deformations. In the literature, works commonly refer to the cardiac FBG signal as an SCG when detected on the chest. The FBG-based systems, based on fiber optic technology, have the great advantage of ...