scholarly journals The Development of a Sub-Surface Monitoring System for Organic Contamination in Soils and Groundwater

2002 ◽  
Vol 2 ◽  
pp. 1101-1107
Author(s):  
Sharon L. Huntley ◽  
Lawrence J. Ritchie ◽  
Steven J. Setford ◽  
Selwayan Saini
Keyword(s):  
Early Detection ◽  
Organic Contaminants ◽  
Contaminated Soils ◽  
Low Cost ◽  
Sensor Technology ◽  
Data Logging ◽  
Organic Contamination ◽  
Wide Range ◽  
Term Monitoring

A major problem when dealing with environmental contamination is the early detection and subsequent surveillance of the contamination. This paper describes the potential of sub-surface sensor technology for the early detection of organic contaminants in contaminated soils, sediments, and landfill sites. Rugged, low-power hydrocarbon sensors have been developed, along with a data-logging system, for the early detection of phase hydrocarbons in soil. Through laboratory-based evaluation, the ability of this system to monitor organic contamination in water-based systems is being evaluated. When used in conjunction with specific immunoassays, this can provide a sensitive and low-cost solution for long-term monitoring and analysis, applicable to a wide range of field applications.

scholarly journals Cave Pearl Data Logger – A flexible Arduino-based Logging Platform for Long-Term Monitoring in Harsh Environments

2018 ◽  
Author(s):  
Patricia A. Beddows ◽  
Edward K. Mallon
Keyword(s):  
Low Cost ◽  
Field Studies ◽  
Optimization Techniques ◽  
Data Logging ◽  
Data Logger ◽  
Term Operation ◽  
Cave System ◽  
Ready Availability ◽  
Term Monitoring

A low-cost data logging platform is presented for environmental monitoring projects that provides long-term operation in remote or submerged environments. Three premade “breakout boards” from the open-source Arduino ecosystem are assembled into the core of the platform. The components are selected based on low-cost and ready availability, making the loggers easy to build and modify without specialized tools, or a significant background in electronics. Power optimization techniques are explained. The platform has proven to be highly reliable, and capable of operating for more than a year on standard AA batteries. The flexibility of the system is illustrated with two ongoing field studies recording drip rates in a cave, and water flow in a flooded cave system.

Modern prevention and active longevity programs on the basis of disruptive domestic technologies: positive experience and prospects for application

2020 ◽  
pp. 66-73
Author(s):  
A. Simonova ◽  
S. Chudakov ◽  
R. Gorenkov ◽  
V. Egorov ◽  
A. Gostry ◽  
...  
Keyword(s):  
Personalized Medicine ◽  
Early Detection ◽  
Laboratory Diagnostics ◽  
Positive Experience ◽  
Practical Application ◽  
Wide Range ◽  
Integrated Program ◽  
Long Term Experience ◽  
Early Detection And Prevention

The article summarizes the long-term experience of practical application of domestic breakthrough technologies of preventive personalized medicine for laboratory diagnostics of a wide range of socially significant non-infectious diseases. Conceptual approaches to the formation of an integrated program for early detection and prevention of civilization diseases based on these technologies are given. A vision of the prospects for the development of this area in domestic and foreign medicine has been formed.

Instrumentation for the remote monitoring of physiological and behavioral variables

1998 ◽  
Vol 85 (5) ◽  
pp. 1974-1981 ◽  
Author(s):  
R. D. Andrews
Keyword(s):  
Exercise Physiology ◽  
Dive Depth ◽  
Data Logging ◽  
Data Logger ◽  
Northern Elephant Seals ◽  
Behavioral Variables ◽  
Large Animals ◽  
Free Ranging ◽  
Term Monitoring

Few commercial products are available for investigators who wish to monitor multiple physiological and behavioral variables in unrestrained subjects. When telemetry is not practical, e.g., in studies of at-sea diving physiology, one of the only options is to design and build a custom data-logging instrument. This paper describes how a data logger was developed for the successful long-term monitoring of dive depth, swim speed, heart rate, water temperature, and multiple body temperatures from free-ranging northern elephant seals. The task was facilitated by using a commercially available single-board computer designed specifically for portable multichannel data acquisition and, where possible, off-the-shelf sensors/transducers available with integrated signal-conditioning circuits. A smaller data logger for monitoring the electrocardiogram, body temperature, and dive behavior of double-crested cormorants is also described to illustrate the flexibility and simplicity of this approach. Although it is customized for diving animals, with incorporation of the appropriate sensors the basic design should be applicable to studies of comparative, environmental, or exercise physiology involving most medium-to-large animals, including humans.

scholarly journals Long-Term Monitoring of Atrazine Contamination in Soil by ELISA

2001 ◽  
Vol 84 (1) ◽  
pp. 150-155 ◽  
Author(s):  
Karl Kramer ◽  
Johann Lepschy ◽  
Bertold Hock
Keyword(s):  
Low Cost ◽  
Threshold Value ◽  
Soil Samples ◽  
Sample Throughput ◽  
Atrazine Contamination ◽  
Long Term Monitoring ◽  
Term Monitoring ◽  
Selection Of ◽  
Hplc Data

Abstract An enzyme-linked immunoassay (ELISA) was used for screening atrazine residues in soil. Samples were annually collected in Southern Germany between 1993 and 1998. An average of 419.5 samples was analyzed per year amounting to 2517 samples. The fraction of positive samples defined by atrazine concentrations >100 μg/kg soil decreased successively from 8% (corresponding to 33 samples) in 1993 to 0.6% (corresponding to 2 samples) in 1998. All positive samples and a selection of negative samples were subsequently validated by HPLC. Comparison of ELISA and HPLC data yielded correlation coefficient values of r= 0.958–0.981 (n= 18–47), except for 1995 when only a correlation of r= 0.864 (n= 18) was obtained. Four samples were overestimated and another 4 were underestimated with respect to the atrazine threshold value of 100 μg/kg soil as revealed by HPLC validation. Thus, 99.68% of 2517 analyzed samples were correctly evaluated. The precision and reproducibility of the ELISA were adequate for a prescreening tool. The low cost per sample and the high sample throughput are not yet achievable by conventional analytical methods. The described combination of ELISA and HPLC has the potential to take advantage of both methods and to restrict determination errors to a minimum.

On the self-calibrated absolute vector data produced by the ASM absolute magnetometers on board the Swarm satellites, results and prospect

2020 ◽  
Author(s):  
Gauthier Hulot ◽  
Pierre Vigneron ◽  
Jean-Michel Léger ◽  
Thomas Jager
Keyword(s):  
Geomagnetic Field ◽  
Low Cost ◽  
Vector Data ◽  
Nominal Data ◽  
Product Report ◽  
Scalar Data ◽  
Swarm Satellites ◽  
Geomagnetic Field Models ◽  
Term Monitoring

<p>Satellites of the ESA Swarm mission carry Absolute Scalar Magnetometers (ASM) that provide the nominal 1 Hz scalar data of the mission and allow the calibration of the nominal fluxgate vector magnetometry payload. ASM instruments, however, also provide independent 1 Hz experimental self-calibrated ASM-V vector data. More than six years of such data have been produced since the launch of the mission in November 2013. They allow the construction of global geomagnetic field models fully capable of capturing the fast temporal evolution of the core field, illustrating the ability of the ASM instruments to operate as a stand-alone instrument for advanced geomagnetic investigations. In this presentation we will provide the latest update on the ASM-V data (soon to be released as a new Swarm product), report on our ongoing efforts to further use these data to improve the nominal data of the mission, and discuss the prospect offered by the planned use of a miniaturized version of this ASM on board the satellites of the NanoMagSat constellation. This nano-satellite project is currently undergoing a 6 months consolidation study funded by the ESA Scout mission program. With a launch planned in 2024, it aims at forming the basis of a low-cost constellation for permanent long-term monitoring of the geomagnetic field and ionospheric environment from space.</p>

scholarly journals Review of Wearable Devices and Data Collection Considerations for Connected Health

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5589
Author(s):  
Vini Vijayan ◽  
James Connolly ◽  
Joan Condell ◽  
Nigel McKelvey ◽  
Philip Gardiner
Keyword(s):  
Functional Ability ◽  
Wearable Sensors ◽  
Disease Diagnosis ◽  
Self Report ◽  
Sensor Technology ◽  
Self Assessment ◽  
Patient Recall ◽  
Wide Range ◽  
Patient Health

Wearable sensor technology has gradually extended its usability into a wide range of well-known applications. Wearable sensors can typically assess and quantify the wearer’s physiology and are commonly employed for human activity detection and quantified self-assessment. Wearable sensors are increasingly utilised to monitor patient health, rapidly assist with disease diagnosis, and help predict and often improve patient outcomes. Clinicians use various self-report questionnaires and well-known tests to report patient symptoms and assess their functional ability. These assessments are time consuming and costly and depend on subjective patient recall. Moreover, measurements may not accurately demonstrate the patient’s functional ability whilst at home. Wearable sensors can be used to detect and quantify specific movements in different applications. The volume of data collected by wearable sensors during long-term assessment of ambulatory movement can become immense in tuple size. This paper discusses current techniques used to track and record various human body movements, as well as techniques used to measure activity and sleep from long-term data collected by wearable technology devices.

scholarly journals Masers in evolved star winds

2012 ◽  
Vol 8 (S287) ◽  
pp. 199-208
Author(s):  
Anita M. S. Richards
Keyword(s):  
Evolutionary Stage ◽  
Interferometric Imaging ◽  
Physical Conditions ◽  
The Past ◽  
Evolved Stars ◽  
Multiple Observations ◽  
Wide Range ◽  
The Many ◽  
Term Monitoring

AbstractThis review summarises current observations of masers around evolved stars and models for their location and behaviour, followed by some of the many highlights from the past 5 years. Some of these have been the fruition of long-term monitoring, a vital aspect of study of stars which are both periodically variable and prone to rapid outbursts or transition to a new evolutionary stage. Interferometric imaging of masers provide the highest-resolution probes of the stellar wind, but their exponential amplification and variability means that multiple observations are needed to investigate questions such as what drives the wind from the stellar surface; why does it accelerate slowly over many tens of stellar radii; what causes maser variability. VLBI parallaxes have improved our understanding of individual objects and of Galactic populations. Masers from wide range of binary and post-AGB objects are accessible to sensitive modern instruments, including energetic symbiotic systems. Masers have been detected up to THz frequencies withHerscheland ALMA's ability to resolve a wide range of maser and thermal lines will provide accurate constraints on physical conditions including during dust formation.

Simultaneous Calibration for MEMS Gyroscopes of the Rocket IMU

2014 ◽  
Vol 896 ◽  
pp. 656-659 ◽  
Author(s):  
Wahyudi ◽  
Adhi Susanto ◽  
Wahyu Widada ◽  
Sasongko P. Hadi
Keyword(s):  
Low Cost ◽  
Angular Rate ◽  
Calibration Method ◽  
Sensor Technology ◽  
Measurement Unit ◽  
Angular Rate Sensor ◽  
Motion Simulator ◽  
Wide Range ◽  
Mems Gyroscopes ◽  
Mean Square Errors

MEMS (Microelectromechanical System), as an advanced sensor technology, is low power, low cost, and small size. Gyroscope sensor produced with microelectromechanical technology is an angular rate sensor. IMU (Inertial Measurement Unit) sensor for rocket should have a very wide range of measurements. At the beginning of the motion, the rocket accelereation is very high, for which the rocket IMU requires a multisensor with different sensitivity. This paper presents the design of the rocket IMU and its calibration method for all MEMS gyroscopes. Calibration for each sensor is necessary including its varying characteristics. The calibration of the gyroscope sensors use three-axis motion simulator model ST 3176 with resolutions 0.00001 for all axes. Simultaneous calibration was mutually applied which require a short calibration time. The results show that root mean square errors (RMSE) of the calibrated gyroscope for all axes are under 2.5 %. Therefore, that the calibrated gyroscope can be used in the proposed real application.

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