scholarly journals Use of geoinformation systems in environmental monitoring

2020 ◽  
Vol 166 ◽  
pp. 01002
Author(s):  
Оlena Pomortseva ◽  
Sergiy Kobzan ◽  
Andrey Yevdokimov ◽  
Maksym Kukhar
Keyword(s):  
Environmental Monitoring ◽  
Pollution Index ◽  
Urban Pollution ◽  
Quality Data ◽  
Monitoring And Control ◽  
Geoinformation Systems ◽  
Continuous Form ◽  
Mathematical Formulas ◽  
High Concentrations ◽  
And Control

The purpose of the study, the materials of which are outlined in this article, is to uncover current trends in the development of environmental monitoring and the tracking of anthropogenic environmental impacts. To achieve this goal, it is proposed to use geoinformation systems to perform environmental monitoring and control, using appropriate software. For this purpose ArcGis software was used which allows monitoring the state of the atmosphere, its pollution and other deviations from the norm. The research was conducted exemplified by nine districts of Kharkiv. As a result of computer geospatial analysis, models and maps of urban pollution have been developed. In general, the intellectual analysis of geostatic models of emission distribution in the city allowed identifying and classifying zones of high concentrations of pollution and comparing them with air quality data. Methods of geostatistics transformed the data from a discrete to a continuous form of representation. Further studies in this area may be related to the improvement of geostatistical data analysis and pollution distribution prediction methods. As an example, mathematical formulas were presented to determine the atmospheric pollution index and the true or predicted pollution index, which can be determined on the basis of the data obtained and represented by elements of the ArcGis software package in a discrete and continuous form.

scholarly journals Investigation of the Superposition Effect of Oil Vapor Leakage and Diffusion from External Floating-Roof Tanks Using CFD Numerical Simulations and Wind-Tunnel Experiments

Processes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 299
Author(s):  
Jie Fang ◽  
Weiqiu Huang ◽  
Fengyu Huang ◽  
Lipei Fu ◽  
Gao Zhang
Keyword(s):  
Wind Speed ◽  
Wind Tunnel ◽  
Simulation Method ◽  
Vapor Concentration ◽  
Monitoring And Control ◽  
Wind Tunnel Experiments ◽  
Ambient Wind ◽  
Wind Speeds ◽  
High Concentrations ◽  
And Control

Based on computational fluid dynamics (CFD) and Realizable k-ε turbulence model, we established a numerical simulation method for wind and vapor-concentration fields of various external floating-roof tanks (EFRTs) (single, two, and four) and verified its feasibility using wind-tunnel experiments. Subsequently, we analysed superposition effects of wind speed and concentration fields for different types of EFRTs. The results show that high concentrations of vapor are found near the rim gap of the floating deck and above the floating deck surface. At different ambient wind speeds, interference between tanks is different. When the ambient wind speed is greater than 2 m/s, vapor concentration in leeward area of the rear tank is greater than that between two tanks, which makes it easy to reach explosion limit. It is suggested that more monitoring should be conducted near the bottom area of the rear tank and upper area on the left of the floating deck. Superposition in a downwind direction from the EFRTs becomes more obvious with an increase in the number of EFRTs; vapor superposition occurs behind two leeward tanks after leakage from four large EFRTs. Considering safety, environmental protection, and personnel health, appropriate measures should be taken at these positions for timely monitoring, and control.

scholarly journals Digital biomanufacturing supporting vascularization in 3D bioprinting

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
William Whitford ◽  
James B. Hoying
Keyword(s):  
Architectural Design ◽  
Quality Data ◽  
Monitoring And Control ◽  
Interpenetrating Networks ◽  
Tissue Constructs ◽  
Vascular Component ◽  
Critical Process Parameters ◽  
Tactical Decision ◽  
And Control ◽  
Real Time Optimization

 Synergies in bioprinting are appearing from individual researchers focusing on divergent aspects of the technology. Many are now evolving from simple mono-dimensional operations to model-controlled multi-material, interpenetrating networks using multi-modal deposition techniques. Bioinks are being designed to address numerous critical process parameters. Both the cellular constructs and architectural design for the necessary vascular component in digitally biomanufactured tissue constructs is being addressed. Advances are occurring from the topology of the circuits to the source of the of the biological microvessel components. Instruments monitoring and control of these activates are becoming interconnected. More and higher quality data are being collected and analysis is becoming richer. Information management and model generation is now describing a “process network.” This is promising; more efficient use of both locally and imported raw data supporting accelerated strategic as well as tactical decision making. This allows real time optimization of the immediate bioprinting bioprocess based on such high value criteria as instantaneous progress assessment and comparison to previous activities. Finally, operations up- and down-stream of the deposition are being included in a supervisory enterprise control.

scholarly journals Design and deployment of a new wireless sensor node platform for building environmental monitoring and control

2011 ◽  
Vol 11 (10–12) ◽  
pp. e3 ◽  
Author(s):  
Essa Jafer ◽  
Rostislav Spinar ◽  
Paul Stack ◽  
Cian O’Mathuna ◽  
Dirk Pesch
Keyword(s):  
Environmental Monitoring ◽  
Sensor Node ◽  
Wireless Sensor ◽  
Monitoring And Control ◽  
Wireless Sensor Node ◽  
And Control
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