Oil and gas production industries use large (diameter > 0.8 m) ultrasonic flow meters (USMs) to measure exhaust from flare stacks, emissions smokestacks, of natural gas, etc. Since most laboratories do not have compressors with sufficient capacity (>10 kg/s) calibrate meters, calibrations are performed using the blow-down method where is generated by discharging high pressure tanks, leading sig...

This paper describes a mesh networking based solution on Routing Protocol for Low power and Lossy network to realize Automated Metering Infrastructure (AMI) network communication. Automated Metering Infrastructure is expected to facilitate the transport of meter readings from meters to the utility provider and control information in the other direction. The smart meters send the meter data to t...

Traditional electricity meters are replaced by Smart Meters in customers’ households. Smart Meters collect fine-grained utility consumption profiles from customers, which in turn enables the introduction of dynamic, time-of-use tariffs. However, the fine-grained usage data that is compiled in this process also allows to infer the inhabitant’s personal schedules and habits. We propose a privacy-...

Gas exchange occurs in the alveolus where the thin laminar blood flow and inspired air are separated only by a thin tissue layer. Gas exchange takes 0.25 seconds or 1/3 of the total transit time of a red cell. The entire blood volume of the body passes through the lungs each minute in the resting state, that is 5 liters per minute. The total surface area of the lung is about 80 meters square, e...

In modern conditions, the issue of quality natural gas, including development gas energy measuring instruments, is becoming increasingly relevant. The Law Ukraine “On market” establishes need for instrumental metering “in order to obtain and register reliable information about volumes during its transportation, distribution, supply, storage consumption”.
 accordance with “Rules supply” in ...

The Precision Quantum-in-dium (Q.I.D.) Glucometer was used to determine the glucose concentrations of 38 human blood samples. The same samples were also run on the OPERA Chemistry Autoanalyzer 2010 system. More than 44% of the glucometer reports had a difference of greater than 15% from the respective autoanalyzer reports. The calibration of the glucometer could be the source of the error and a...

In a smart power grid, collecting data from a large number of smart meters and sensors over the conventional one-hop transmission control protocol (TCP) communication is prone to a high packet loss rate and degraded throughput due to the ineffectiveness of the TCP congestion control mechanism. The Split and Aggregated TCP (SA-TCP) proposes upgrading intermediate devices (known as regional colle...

A questionnaire was circulated to clinical biochemistry laboratories in the North West Thames region of the United Kingdom requesting information on extralaboratory equipment. Data on the types and numbers of instruments in use, their relationship with the laboratory, and quality assurance procedures were obtained. Laboratories were prepared to maintain equipment over which they had no responsi...

BACKGROUND Oxygen therapy is an important therapeutic resource for patients with hypoxemia. When changing oxygen flow meters, we have observed that sometimes, even with the same oxygen flow setting as before, a different S(pO(2)) is obtained. OBJECTIVE To analyze the precision and accuracy of flow meters used in hospital settings. METHODS An experimental study was performed to test oxygen ...