Results 11 to 20 of about 412,356 (264)

CO2 measurement for the early differential diagnosis of pulmonary embolism-related shock at the emergency department: A case series [PDF]

open access: yesRespiratory Medicine Case Reports, 2015
Objective: An early differential diagnosis is mandatory when facing a patient with clinical shock of unclear aetiology, in order to guide proper treatment. We assessed if the expired CO2 measurement and alveolar-arterial CO2 calculation could improve the
Cédric Van Marcke   +3 more
doaj   +2 more sources

Comparison of the Characteristics of Small Commercial NDIR CO2 Sensor Models and Development of a Portable CO2 Measurement Device

open access: yesSensors, 2012
Many sensors have to be used simultaneously for multipoint carbon dioxide (CO2) observation. All the sensors should be calibrated in advance, but this is a time-consuming process.
Akira Tani   +2 more
doaj   +3 more sources

Verification of PEMS measurement accuracy based on light vehicle emission test system [PDF]

open access: yesE3S Web of Conferences, 2021
For the requirements of the portable emission measurement system (PEMS) measurement accuracy for limits and measurement methods for emissions from light-duty vehicles(CHINA 6), based on the light-duty vehicle emission test system in steady-state ...
Wang Gang   +4 more
doaj   +1 more source

CO2-measuring dongle

open access: yesHardwareX, 2022
The compact pocketable CO2-measuring device is built on a small printed circuit board (PCB) with the dimensions of ca. 8.5 x 3 cm. It is plugged into the USB (universal serial bus) port of a personal computer (PC) which serves to provide power and for downloading the measurements.
Boillat, Marc-Aurèle, Hauser, Peter C.
openaire   +5 more sources

Numerical investigation of airflow field and CO2 distribution inside a seminar room for sensor placement

open access: yesMeasurement: Sensors, 2021
The measurement data quality of CO2 sensors plays a critical role in the implementation of the demand control ventilation (DCV) using a network of CO2 sensors.
Jianqiang Mou   +2 more
doaj   +1 more source

High-temperature flexible WSe2 photodetectors with ultrahigh photoresponsivity

open access: yesNature Communications, 2022
High-temperature photodetectors are desired for aerospace applications and harsh-environment robotics, but their responsivity is usually limited.
Yixuan Zou   +7 more
doaj   +1 more source

Quantifying pCO2 in biological ocean acidification experiments: A comparison of four methods. [PDF]

open access: yesPLoS ONE, 2017
Quantifying the amount of carbon dioxide (CO2) in seawater is an essential component of ocean acidification research; however, equipment for measuring CO2 directly can be costly and involve complex, bulky apparatus.
Sue-Ann Watson   +2 more
doaj   +1 more source

Flight Demonstration of a 2-Micron, Double Plused CO2 IPDA Lidar Instrument [PDF]

open access: yesEPJ Web of Conferences, 2020
NASA Langley Research Center (LaRC) developed a double pulsed, high energy 2-micron Integrated Path Differential Absorption (IPDA) lidar instrument to measure atmospheric CO2 column density.
Yu Jirong   +6 more
doaj   +1 more source

Evaluating the efficiency of enzyme accelerated CO2 capture: chemical kinetics modelling for interpreting measurement results

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2021
In this paper, the efficiency of the carbonic anhydrase (CA) enzyme in accelerating the hydration of CO2 is evaluated using a measurement system which consists of a vessel in which a gaseous flow of mixtures of nitrogen and CO2 is bubbled into water or ...
Lorenzo Parri   +8 more
doaj   +1 more source

Computational fluid dynamics modelling of airflow and carbon dioxide distribution inside a seminar room for sensor placement

open access: yesMeasurement: Sensors, 2022
Demand control ventilation (DCV) is a high energy efficiency ventilation strategy with control input from carbon dioxide (CO2) sensors. The measurement data quality of CO2 sensors plays a critical role in accurate determination of the indoor air quality (
Jianqiang Mou   +2 more
doaj   +1 more source

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