Comparison of mechanical and thermal effects of lake urmia: a case study

2020 ◽  
Author(s):  
Milad Behravesh ◽  
Mohammad Mirzaei ◽  
Ali R. Mohebalhojeh
Keyword(s):  
Thermal Effects ◽  
Lake Urmia

scholarly journals Thermal effects on cephalopod energy metabolism — A case study for Sepia officinalis

2008 ◽  
Vol 150 (3) ◽  
pp. S171 ◽  
Author(s):  
F. Mark ◽  
F. Melzner ◽  
C. Bock ◽  
H. Poertner ◽  
C. Ellington ◽  
...  
Keyword(s):  
Energy Metabolism ◽  
Thermal Effects ◽  
Sepia Officinalis

scholarly journals Thermal effects of groundwater flow through subarctic fens: A case study based on field observations and numerical modeling

2016 ◽  
Vol 52 (3) ◽  
pp. 1591-1606 ◽  
Author(s):  
Ylva Sjöberg ◽  
Ethan Coon ◽  
A. Britta K. Sannel ◽  
Romain Pannetier ◽  
Dylan Harp ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Groundwater Flow ◽  
Thermal Effects ◽  
Field Observations ◽  
Flow Through

Developing Public-Private Partnership Framework for Managing Adverse Health Effects of Environmental Disaster (A case study of Lake Urmia -Iran)

2020 ◽  
Author(s):  
Hojatolah Gharaee ◽  
Ramin Rezapour ◽  
Naser Derakhshani ◽  
Morteza Ghojazadeh ◽  
Saber Azami-Aghdash
Keyword(s):  
Private Sector ◽  
Health Effects ◽  
Public Private Partnership ◽  
Lake Urmia ◽  
Private Partnership ◽  
Adverse Health Effects ◽  
Environmental Disasters ◽  
Adverse Health ◽  
Private Sector Participation

Abstract Background Due to the limited resources of the public sector, the presence of the private sector as an auxiliary to the health sector, to mitigate adverse health effects (AHEs) caused by environmental disasters, seems necessary. Therefore, the present study aimed to develop a Public-Private Partnership (PPP) framework for managing AHE of environmental disasters (case study of Lake Urmia-Iran). Methods This is a qualitative study with grounded theory approach, conducted in 2019. Required data were collected through semi-structured interviews with 20 experts selected through purposive sampling, and analyzed using Content-Analysis. To formulate the initial framework, an experts’ panel, composed of 12 experts, was formed. Delphi method was used to determine the validity of the framework. Results Most participants found the private sector participation in this field, essential and useful. The most important infrastructure for the private sector participation was designing a legal framework and providing adequate resources and facilities. Pollutant assessment and education of families for disease prevention are among the most important areas that the private sector can participate. To evaluate the performance of the private sector, periodic and short-term reports together with documentation should be used, and the evaluation tool should be the checklists agreed by two sectors. Payments to the private sector should be for periodic objectives, based on performance, and after performance confirmation, in the form of combination of fee for services, per capita and performance-based system. Preventing waste of resources, improving service coverage, greater efficiency and attracting public participation were the most important benefits of the private sector participation. Conclusions PPP can be considered by policy makers as an effective policy for reducing the AHE of environmental disasters (especially drying lakes). To this end, the framework presented in this study can be used as an action guide by national and local authorities and policymakers.

How Climate Change and Human Interaction Alter Chemical Regime in Salt Lakes, Case Study: Lake Urmia, Aral Sea, the Dead Sea, and Lake Issyk-Kul

2021 ◽  
Author(s):  
Evgeniy V. Yakushev ◽  
Natalia Yu. Andrulionis ◽  
Mahnaz Jafari ◽  
Hamid A. K. Lahijani ◽  
Peygham Ghaffari
Keyword(s):  
Climate Change ◽  
Dead Sea ◽  
Human Interaction ◽  
Aral Sea ◽  
Salt Lakes ◽  
Lake Urmia ◽  
Study Lake ◽  
The Dead

Mixed-integer nonlinear optimization for district heating network expansion

2020 ◽  
Vol 68 (12) ◽  
pp. 985-1000
Author(s):  
Marius Roland ◽  
Martin Schmidt
Keyword(s):  
Nonlinear Optimization ◽  
Optimization Model ◽  
Thermal Effects ◽  
Nonlinear Models ◽  
Valid Inequalities ◽  
Average Power ◽  
District Heating ◽  
Mixed Integer ◽  
Mixed Integer Nonlinear Optimization

AbstractWe present a mixed-integer nonlinear optimization model for computing the optimal expansion of an existing tree-shaped district heating network given a number of potential new consumers. To this end, we state a stationary and nonlinear model of all hydraulic and thermal effects in the pipeline network as well as nonlinear models for consumers and the network’s depot. For the former, we consider the Euler momentum and the thermal energy equation. The thermal aspects are especially challenging. Here, we develop a novel polynomial approximation that we use in the optimization model. The expansion decisions are modeled by binary variables for which we derive additional valid inequalities that greatly help to solve the highly challenging problem. Finally, we present a case study in which we identify three major aspects that strongly influence investment decisions: the estimated average power demand of potentially new consumers, the distance between the existing network and the new consumers, and thermal losses in the network.

scholarly journals A simple, robust, and automatic approach to extract water body from Landsat images (case study: Lake Urmia, Iran)

2019 ◽  
Author(s):  
Hadiseh Babaei ◽  
Milad Janalipour ◽  
Nadia Abbaszadeh Tehrani
Keyword(s):  
Saline Lakes ◽  
Continuous Monitoring ◽  
Landsat 8 ◽  
Lake Area ◽  
Spectral Indices ◽  
Lake Urmia ◽  
Landsat Images ◽  
The World ◽  
Study Lake

Abstract Lake Urmia is one of the largest saline lakes in the world, and has a great effect on its surrounding ecosystems as well as the economic, social, and even cultural condition of its basin inhabitants. Hence, continuous monitoring of lake area changes is necessary and unavoidable for better land management and prevention of its degradation. In this study, by using Landsat 8 images and by preforming some essential pre-processing tasks, the area of the lake was estimated using the number of traditional spectral indices and a new one and the automatic Otsu's thresholding method for 5 years (2013–2017). The results showed that this index shows more accurate results than other indices when estimating the area of the lake and can separate water class from land one with an average overall accuracy of 96%.

On the chemical nature of wet deposition over a major desiccated lake: Case study for Lake Urmia basin

2020 ◽  
Vol 234 ◽  
pp. 104762 ◽  
Author(s):  
Hesam Ahmady-Birgani ◽  
Parisa Ravan ◽  
Joseph Simon Schlosser ◽  
Alberto Cuevas-Robles ◽  
Mojtaba AzadiAghdam ◽  
...  
Keyword(s):  
Wet Deposition ◽  
Chemical Nature ◽  
Lake Urmia

Dynamical Diffraction Simulations in FePt—I

2011 ◽  
Vol 17 (3) ◽  
pp. 398-402 ◽  
Author(s):  
Karen L. Torres ◽  
Richard R. Vanfleet ◽  
Gregory B. Thompson
Keyword(s):  
Thermal Effects ◽  
Lattice Site ◽  
Statistical Approach ◽  
Weighting Function ◽  
Dynamical Diffraction ◽  
Plane Normal ◽  
Selected Area Electron Diffraction ◽  
Degree Of Order ◽  
Beam Diffraction

AbstractA series of multislice simulations to quantify the effect of various degrees of order, composition, and thickness on the electron diffracted intensities were performed using the L10 FePt system as the case study. The dynamical diffraction studies were done in both a convergent electron beam diffraction and selected area electron diffraction condition. The L10 symmetry demonstrated some peculiar challenges in the simulation, in particular between the {111} plane normal and the ⟨111⟩ direction, which are not equivalent because of tetragonality. A hybrid weighting function atom of Fe-Pt was constructed to account for S < 1 or nonequiatomic compositions. This statistical approach reduced the complexity of constructing a crystal with the probability that a particular atom was at a particular lattice site for a given order parameter and composition. Considerations of accelerating voltage, convergent angle, and thermal effects are discussed. The simulations revealed significant differences in intensity ratios between films of various compositions but equivalent unit cell numbers and degree of order.

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