scholarly journals Development of an automated sensor for in-situ continuous monitoring of streambed sediment height of a waterway

2022 ◽  
Vol 808 ◽  
pp. 152164
Author(s):  
T. Matos ◽  
J.L. Rocha ◽  
C.L. Faria ◽  
M.S. Martins ◽  
Renato Henriques ◽  
...  
Keyword(s):  
Continuous Monitoring ◽  
Streambed Sediment

Importance of Continuous Monitoring: Case Study of Shallow CO2 Injection at the CSIRO in-situ Laboratory Site

2020 ◽  
Author(s):  
K. Tertyshnikov ◽  
L. Ricard ◽  
K. Michael ◽  
A. Avijegon ◽  
R. Pevzner
Keyword(s):  
Continuous Monitoring ◽  
Co2 Injection

An automatic cardiac action potential duration meter

1979 ◽  
Vol 236 (1) ◽  
pp. H183-H188
Author(s):  
M. J. Lab ◽  
R. K. Child
Keyword(s):  
Action Potential ◽  
Continuous Monitoring ◽  
Resting Potential ◽  
Cardiac Action Potential ◽  
Base Line ◽  
Velocity Amplitude ◽  
Cardiac Action ◽  
Regional Myocardial Ischemia ◽  
Fully Automatic

The duration of a cardiac action potential (AP) is measured from the beginning of its upstroke to the end of its asymptotic repolarization phase: the end being given by a point in proportion to the AP amplitude. If the resting potential, AP amplitude, as well as the duration, alter simultaneously, frequent accurate measurements can be extremely tedious. A fully automatic AP duration meter has thus been constructed to cope with these difficulties while measuring within about 2% on a beat-to-beat basis. It is suitable either for brief sampling of AP durations when recording with microelectrodes, which may impale cells intermittently, or for continuous monitoring, as with suction electrodes on intact beating hearts in situ. For example, the device can faithfully track changes in duration during periods of regional myocardial ischemia in intact ventricles in situ while the AP alters its base line, upstroke velocity, amplitude, and duration.

scholarly journals Seismic and Rainfall Induced Displacements of an Existing Landslide: Findings from the Continuous Monitoring

Geosciences ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 90 ◽  
Author(s):  
Paolo Ruggeri ◽  
Viviene M. E. Fruzzetti ◽  
Antonio Ferretti ◽  
Giuseppe Scarpelli
Keyword(s):  
Continuous Monitoring ◽  
Average Rate ◽  
Central Italy ◽  
Back Analysis ◽  
Pressure Transducers ◽  
Long Time ◽  
The Difference ◽  
One Year ◽  
National Road

“La Sorbella” is a deep-seated existing landslide in a Miocene clayey formation located in central Italy. Given the interaction with a national road, this landslide has been monitored for a long time with inclinometers and hydraulic piezometers. Recently, the monitoring system was implemented by adding pressure transducers in the Casagrande cells and by equipping the old inclinometers with in-place probes, to allow a remote reading of the instruments and data recording. This system allowed to identify that the very small average rate of movement observed over one year (1.0–1.5 cm/year) is the sum of small single sliding processes, strictly linked to the sequence of rainfall events. Moreover, data recorded by in-place inclinometer probes detected the response of the landslide to the seismic sequence of 2016 occurring in central Italy. Such in situ measurements during earthquakes, indeed rarely available in the scientific literature, allowed an assessment of the critical acceleration of the sliding mass by means of a back-analysis. The possibility to distinguish the difference between seismic and rainfall induced displacements of the slope underlines the potential of continuous monitoring in the diagnosis of landslide mechanisms.

scholarly journals Kinetic Study of Disulfonimide-Catalyzed Cyanosilylation of Aldehydes by Using a Method of Progress Rates

Synlett ◽  
2020 ◽  
Vol 31 (16) ◽  
pp. 1593-1597 ◽  
Author(s):  
Zhipeng Zhang ◽  
Martin Klussmann ◽  
Benjamin List
Keyword(s):  
Kinetic Study ◽  
Kinetic Data ◽  
Continuous Monitoring ◽  
Reaction Rates ◽  
Catalytic Reactions ◽  
In Situ Ftir ◽  
Bond Forming ◽  
Enthalpy Of Activation ◽  
Entropy Of Activation

Kinetic study of organic reactions, especially multistep catalytic reactions, is crucial to in-depth understanding of reaction mechanisms. Here we report our kinetic study on the chiral disulfonimide-catalyzed cyanosilylation of an aldehyde, which revealed that two molecules of TMSCN are involved in the rate-determining C–C bond-forming step. In addition, the apparent activation energy, enthalpy of activation, and entropy of activation were deduced through a study of the temperature dependence of the reaction rates. More importantly, a novel and efficient method that makes use of the progress rates was developed to treat kinetic data obtained by continuous monitoring of the progress of a reaction by in situ FTIR.

scholarly journals In situ pelagic dataset from continuous monitoring: A mesocosm experiment in Lake Geneva (MESOLAC)

Data in Brief ◽  
2020 ◽  
Vol 32 ◽  
pp. 106255
Author(s):  
Viet Tran-Khac ◽  
Philippe Quetin ◽  
Isabelle Domaizon ◽  
Stéphan Jacquet ◽  
Laurent Espinat ◽  
...  
Keyword(s):  
Continuous Monitoring ◽  
Mesocosm Experiment ◽  
Lake Geneva

In-Situ Raman Spectroscopy Studies of Room-Temperature and Hydrothermal Reactions

2012 ◽  
Vol 1444 ◽  
Author(s):  
Brendan T. McGrail ◽  
Laurent J. Jouffret ◽  
Eric M. Villa ◽  
Peter C. Burns
Keyword(s):  
Raman Spectroscopy ◽  
Continuous Monitoring ◽  
Room Temperature ◽  
Model Systems ◽  
Optical Systems ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Parr Instrument Company ◽  
Spectroscopy Studies

ABSTRACTBy contracting with the Parr Instrument Company and Bruker Optical Systems, we have developed a system for continuous monitoring of hydrothermal and room temperature reactions by Raman spectroscopy. Using the uranyl peroxide cage cluster {[UO2(O2)(OH)]16[UO2(OM)2]4}24- (denoted {U20R}) and a coordination polymer made from uranyl ions and 4,4’-biphenyldicarboxylate as model systems, we demonstrate the spectroscopically observable changes associated with reaction progress and crystallization.

scholarly journals Taxonomic classification of algae by the use of chlorophyll a fluorescence

2017 ◽  
Vol 26 (4) ◽  
pp. 470-480
Author(s):  
Nikodem Szymański ◽  
Piotr Dąbrowski ◽  
Hazem Kalaji ◽  
Detlev Lohse ◽  
Balaji Panchal ◽  
...  
Keyword(s):  
Algal Blooms ◽  
Continuous Monitoring ◽  
Algal Species ◽  
Fluorescence Analysis ◽  
Traditional Group ◽  
Non Invasive ◽  
Alternative Approach ◽  
Chlorophyll Fluorescence Analysis

Natural water reservoirs are very important ecosystems thus they should be under continuous monitoring and protection. In water of low quality, the algal blooms develop develops vastly. The knowledge of algal species composition is necessary for understanding this process. There are a few traditional group-specific methods of microalgae classification, but they are often labour-intense and time-consuming. Moreover, the samples must be prepared and/or collected before getting any results. Non-invasive chlorophyll fluorescence analysis offers an alternative approach and potentially allows in situ estimation of algal concentration. In this work the fluorometric methods to estimate algae content in water and to differentiate algal populations is presented.

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