The most recent advances in silicon micromachining technology have given rise to a variety of low-cost pressure sensor applications and solutions. Certain applications had previously been hindered by the high-cost, large size, and overall reliability limitations of electromechanical pressure sensing devices. Furthermore, the integration of on-chip temperature compensation and calibration has al...

There are a number of variables that are correlated with land elevation. Land elevation, and in particular, its surrogate variables such as natural background radiation, can be studied in relation to cancer rates. The present ecological study focuses on three such variables correlated with land elevation: natural background radiation (NBR), oxygen concentration (OC), and barometric pressure (BP...

With increasing altitude, there is a fall in barometric pressure and a progressive fall in the partial pressure of oxygen. Acclimatization describes the physiologic changes that help maintain tissue oxygen delivery and human performance in the setting of hypobaric hypoxemia. These changes include a marked increase in alveolar ventilation, increased hemoglobin concentration and affinity, and inc...

Following the popularity of smart phones and the development of mobile Internet, the demands for accurate indoor positioning have grown rapidly in recent years. Previous indoor positioning methods focused on plane locations on a floor and did not provide accurate floor positioning. In this paper, we propose a method that uses multiple barometers as references for the floor positioning of smart ...

Many physicians are surprised to learn how many people live, work, and play at high altitude. Some 140 million persons reside at altitudes over 2500 m, mainly in North, Central, and South America; Asia; and eastern Africa (1). Increasingly, people are moving to work at high altitude. For example, there are telescopes at altitudes over 5000 m (2) and mines at over 4500 m (3), and the Golmud–Lhas...

Abstract BMP280 sensor is widely used to measure air pressure. Accuracy and precision are parameters indicate the performance of a sensor. This study examined by measuring pressure on 15 sensors compared with BMKG devices as reference standard. measurement was conducted in class III Tanjungpinang from 20-22 May 2022. Sensor analysis performed using statistical one-way ANOVA method, Tukey test, ...

Seasonal and circadian variation in the incidence of ruptured abdominal aortic aneurysm (RAAA) has been reported. We explored the role of atmospheric pressure changes on rupture incidence and its relationship to cardiovascular risk factors. During a three year-period, 1st April 1998 and 31st March 2001, data was prospectively acquired on 144 Ruptured Abdominal Aortic Aneurysm (RAAA) presenting ...