Zobrazeno 1 - 10
of 619
pro vyhledávání: '"NDIR"'
Publikováno v:
Soil Security, Vol 16, Iss , Pp 100162- (2024)
Soil respiration is a critical indicator of microbial activity, reflecting soil health and its ability to deliver essential ecosystem services and functions. Chamber-based measurements provide direct observations and are relatively simple to implemen
Externí odkaz:
https://doaj.org/article/d8bd6adf0e2b485fb6d5a1f988147280
Publikováno v:
Micromachines, Vol 15, Iss 10, p 1203 (2024)
A carbon dioxide (CO2) gas sensor based on non-dispersive infrared (NDIR) technology has been developed and is suitable for use in portable devices for high-precision CO2 detection. The NDIR gas sensor comprises a MEMS infrared emitter, a MEMS thermo
Externí odkaz:
https://doaj.org/article/c32b65fd927a404793dc7710fd40f8bd
Publikováno v:
Reviews in Analytical Chemistry, Vol 42, Iss 1, Pp 6-15 (2023)
This study presents an in-depth review of non-dispersive infrared (NDIR) sensors for methane detection, focusing on their principles of operation, performance characteristics, advanced signal processing techniques, multi-gas detection capabilities, a
Externí odkaz:
https://doaj.org/article/1cf6d11be5f34e7c9a7246ad29b43ba1
Autor:
Yongmin Zhao, Congchun Zhang, Guangteng Ci, Xiaoguang Zhao, Jinguang Lv, Jingqiu Liang, Anjie Ming, Feng Wei, Changhui Mao
Publikováno v:
Sensors, Vol 24, Iss 13, p 4146 (2024)
Increasing concerns about air quality due to fossil fuel combustion, especially nitrogen oxides (NOx) from marine and diesel engines, necessitate advanced monitoring systems due to the significant health and environmental impacts of nitrogen dioxide
Externí odkaz:
https://doaj.org/article/d0ad9b4e94ff4b72a54dcb9e915c1556
Publikováno v:
Advanced Sensor Research, Vol 3, Iss 1, Pp n/a-n/a (2024)
Abstract Exhaled breath analysis is considered an effective tool for diagnosing the patient's metabolic status because of its non‐invasive nature. Gas chromatography‐mass spectrometry (GC‐MS) and other mass spectrometry techniques are widely us
Externí odkaz:
https://doaj.org/article/a10016ca623b4930a6bc28d3de01c879
Publikováno v:
Sensors, Vol 24, Iss 9, p 2680 (2024)
CO2 monitoring is important for carbon emission evaluation. Low-cost and medium-precision sensors (LCSs) have become an exploratory direction for CO2 observation under complex emission conditions in cities. Here, we used a calibration method that imp
Externí odkaz:
https://doaj.org/article/85b414eef1ec4e1e97a35c9210e7e46f
Publikováno v:
Meteorologische Zeitschrift, Vol 31, Iss 4, Pp 331-345 (2022)
In this study an autarkic low-cost wireless network infrastructure suitable for areas spanning a couple of hectares is introduced. Open source hard- and software components make up the infrastructure's core, rendering it very scalable in terms of cos
Externí odkaz:
https://doaj.org/article/29002b3fc9264ec9aa312e03c765b14e
Publikováno v:
Applied Sciences, Vol 14, Iss 4, p 1679 (2024)
Sensor technologies have sufficiently advanced to provide low-cost devices that can quantify carbon dioxide levels in honeybee hives with high temporal resolution and in a small enough package for hive deployment. Recent publications have shown that
Externí odkaz:
https://doaj.org/article/c5416adea0f84b7f93da5fe8f458cacd
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