Background/purpose: The use of dorsal skinfold chamber models has substantially improved the understanding of micro-vascularisation in pathophysiology over the last eight decades. It allows in vivo pathophysiological studies of vascularisation over a continuous period of time. The dorsal skinfold chamber is an attractive technique for monitoring the vascularisation of autologous or allogenic tr...

We carried out a cross sectional study to analyze hemodynamic parameters of single-chamber ventricular pacemaker compared with dual-chamber pacemaker by using thoracic electrical bioimpedance monitoring method (Physio FlowTM) a novel simple non-invasive measurement. A total of 48 consecutive outpatients comprised of 27 single chamber pacemaker and 21 dual chamber were analyzed. We measured card...

in the present work, the simultaneous effects of fuel injection rate and injection of air jet into the combustion chamber on exhaust emissions, combustion process and performance parameters in a direct injection diesel engine were investigated. in order to create an air jet, a design was presented in which a secondary chamber (air cell) was created inside the cylinder and was joined to the main...

The Neurolog system has been designed by Digitimer for optional instrumentation flexibility when processing electrophysiological signals. The system is modular with more than 50 types of interchangeable modules on offer for signal conditioning, amplification, tinting, averaging, integration and so on. Only those modules required to perform a particular function need to be inserted into the comm...

The cloud chamber was one of the primary tools used to conduct the first experiments in the starting of the field of particle physics. Experiments were conducted from the 1920s to the 1950s, at which point more elaborate detectors were conceived which had several benefits. Nonetheless, the cloud chamber is still a very valuable tool to look at particle interactions. In this experiment you will ...

Analysis of myocardial deformation, or strain imaging, is becoming part of routine echocardiography. The most widely accepted parameter to date has been global longitudinal strain as a measure of global left ventricular (LV) function. Global longitudinal strain (LS) of the LV, in (negative) percent, is the average of the maximal shortening (in percent) in the apicobasal direction of each of 18 ...

As tissues and organs are formed, they acquire a specific shape that plays an integral role in their ability to function properly. A relatively simple system that has been used to examine how tissues and organs are shaped is the formation of an elongated Drosophila egg. While it has been known for some time that Drosophila egg elongation requires interactions between a polarized intracellular b...

background: more than 50% of the total dose received by human beings from all sources of radiation (both from natural and manmade) comes from radon and its progeny which is responsible for lung cancer in many cases. materials and methods: in the present study, the measurements have been carried out by using twin chamber dosimeter cups with lr-115 type-ii detectors. the value of track density of...

We evaluated the influence of impurities in the vacuum chamber used for the fabrication of organic light-emitting diodes on the lifetime of the fabricated devices and found a correlation between lifetime and the device fabrication time. The contact angle of the ITO substrates stored the chamber under vacuum were used to evaluate chamber cleanliness. Liquid chromatography-mass spectrometry was p...