Monitoring temperature changes in a hypersaline lake usingMODIS-derived water temperatures (the case of Urmia Lake, Iran)

2010 ◽  
pp. 921-926
Keyword(s):  
Urmia Lake ◽  
Hypersaline Lake ◽  
Temperature Changes ◽  
Monitoring Temperature

Monitoring Temperature Changes in Capillary Electrophoresis with Nanoliter-Volume NMR Thermometry

2000 ◽  
Vol 72 (20) ◽  
pp. 4991-4998 ◽  
Author(s):  
Michael E. Lacey ◽  
Andrew G. Webb ◽  
Jonathan V. Sweedler
Keyword(s):  
Capillary Electrophoresis ◽  
Temperature Changes ◽  
Monitoring Temperature

Use of Control Sera for Monitoring Temperature Changes during pH and PCO2 Measurements

1974 ◽  
Vol 20 (9) ◽  
pp. 1226-1228 ◽  
Author(s):  
John P Manning ◽  
Daniel N Sasaki ◽  
Paul T Wertlake
Keyword(s):  
Serum Protein ◽  
Gas Analysis ◽  
Control Material ◽  
Ph Measurements ◽  
Temperature Changes ◽  
Temperature Coefficients ◽  
Blood Ph ◽  
Calibration Materials ◽  
Monitoring Temperature

Abstract We evaluated the temperature coefficients from 25 to 38 °C for aqueous calibration materials, serum (protein-based) control material, and patients’ samples in blood pH measurements and gas analysis. Whereas the aqueous buffers and calibration gases (used as unknowns) were not affected by changing temperature, the temperature coefficients of patients’ samples and protein-based control materials varied similarly to those reported in the literature: 0.011 and 0.014 vs. 0.015 pH/ °C, and 1.76 and 1.57 vs. 1.80 mm Hg/°C. We conclude that the periodic use of suitable control materials can assist in the detection of temperature abnormalities.

scholarly journals Monitoring Atmospheric Aerosols Over the Urmia Lake by CALIPSO and a Ground Based Depolarized Lidar

2020 ◽  
Vol 237 ◽  
pp. 02025
Author(s):  
Hamid R. Khalesifard ◽  
Hossein Panahifar ◽  
Fatemeh Ghomashi ◽  
Salar Alizadeh ◽  
Ruhollah Moradhaseli
Keyword(s):  
Boundary Layer ◽  
Atmospheric Boundary Layer ◽  
Aerosol Optical Depth ◽  
Optical Depth ◽  
Atmospheric Aerosols ◽  
Urmia Lake ◽  
Hypersaline Lake ◽  
Depolarization Ratio ◽  
Hysplit Model ◽  
Aerosol Source

The Urmia Lake, a hypersaline lake in Northwest Iran is facing a severe drying scenario. We have installed an azimuthal scanning depolarized backscatter lidar in the coast of the lake to monitor the atmospheric aerosols that may originate from the dried lake bed. We also used the CALIPSO recordings to monitor the aerosol optical depth and particulate depolarization ratio just over the lake. Recordings of the lidar and CALIPSO both show that dry salt particles can be found in the atmospheric boundary layer over the lake especially in summer times. Also CALIPSO data in synergy with HYSPLIT model show that the lake is not an intense aerosol source comparing to neighboring sources like the Mesopotamia region but it is under their influence.

scholarly journals New record of three freshwater fish species from a western drainage of Lake Urmia for the Turkish fauna

2020 ◽  
Vol 37 (4) ◽  
pp. 325-328
Author(s):  
Cüneyt Kaya
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
New Record ◽  
Urmia Lake ◽  
Hypersaline Lake ◽  
Lake Urmia ◽  
Freshwater Fish Species

In the scope of this study, three freshwater fish species were newly recorded for Turkey from a western drainage of Lake Urmia: Alburnoides petrubanarescui, Alburnus atropatenae and Oxynoemacheilus elsae. All of them were found in headwaters of Nazli-chay River in the basin of the hypersaline Lake Urmia. The Lake is fed by many small springs and thirteen permanent rivers. In the previous studies, the existence of a stream in the western part of the Urmia Lake within border of Turkey was not mentioned.

Feasibility Study of Photoacoustic Imaging for Monitoring Temperature in Photothermal Therapy

2013 ◽  
Vol 760-762 ◽  
pp. 872-875
Author(s):  
Yu Bin Liu ◽  
Zhi Fang Li ◽  
Wen Ming Xie ◽  
Hui Li ◽  
Wei R. Chen ◽  
...  
Keyword(s):  
Photothermal Therapy ◽  
Photoacoustic Imaging ◽  
Signal Amplitude ◽  
Photoacoustic Signal ◽  
Therapeutic Procedure ◽  
Temperature Changes ◽  
Normal Tissues ◽  
Temperature Diffusion ◽  
Monitoring Temperature

Photothermal therapy relies on the principle of converting light energy into heat causing localized lesion destruction. For safe and effective treatment, it is necessary to monitor temperature diffusion in the boundaries of the irradiated region, to minimize damage to surrounding normal tissues. This paper gives a pilot study of the feasibility of photoacoustic imaging for monitoring temperature changes during photothermal therapy. The results showed that our system of photoacoustic imaging (PAI) can play the role of biosensor, for the photoacoustics signal amplitude depend on temperature of tissue-mimicking phantoms. Whats more, photoacoustic signal can determinate the boundary of photoabsorder-enhance tissue during therapeutic procedure.

The Vanishing of Urmia Lake: A Geolimnological Perspective on the Hydrological Imbalance of the World’s Second Largest Hypersaline Lake

2018 ◽  
Author(s):  
Arash Sharifi ◽  
Majid Shah-Hosseini ◽  
Ali Pourmand ◽  
Mojgan Esfahaninejad ◽  
Omid Haeri-Ardakani
Keyword(s):  
Urmia Lake ◽  
Hypersaline Lake

Depositional environments and salt-thickness variations in Urmia Lake (NW Iran): Insight from sediment-core studies

2021 ◽  
Vol 91 (3) ◽  
pp. 296-316
Author(s):  
ALI MOHAMMADI ◽  
RAZYEH LAK ◽  
GEORG SCHWAMBORN ◽  
AMANEH KAVEH FIROUZ ◽  
ATTILA ÇINER ◽  
...  
Keyword(s):  
Water Depth ◽  
Depositional Environments ◽  
Urmia Lake ◽  
Aral Sea ◽  
Hypersaline Lake ◽  
Salt Deposition ◽  
Salt Crust ◽  
Thickness Variations ◽  
Evaporite Minerals ◽  
Crust Thickness

Abstract Urmia Lake is a large-scale hypersaline lake that experienced a drastic water-level fall due to natural and anthropogenic forces during the last two decades. Construction of a causeway in the central part of the lake after 1989 has divided the lake into northern and southern parts and caused an extreme change of the lake hydrochemical system. Precipitation of evaporite minerals as crust on the lake floor was caused by the combination of lake level fall and increasing water salinity. However, some parameters controlling rates of salt deposition and dissolution and temporal and spatial variation in salt thickness in Lake Urmia are poorly understood. This study reviews 90 sediment cores from various parts of the lake to put forward a better understanding of the salt depositional system and salt thickness variations in the basin for the last 40 years (1977–2017). Our results indicate that the sedimentary system of Urmia Lake changed rapidly during the last two decades from a permanent hypersaline lake with predominantly fast terrigenous–biochemical sedimentation to a seasonally changing playa sedimentary environment with predominance of evaporite minerals. These changes are responsible for rapid salt deposition that generated a salt-crust with a maximum thickness of 2.95 m overlying Holocene terrigenous sediments. The salt-crust thickness and the water depth have a positive correlation for water depth greater than 1 meter, which means that salt-crust thickness increases where water depth increases. While the thickness of shallow deposits are affected by fresh-water dissolution. In addition, the average salt precipitation rate in the northern and the southern parts of the lake is 466 and 266 times higher, respectively, than the average (0.3 mm/y) sedimentation rate before the lake shrinkage. Similar to other large hypersaline lakes such as the Great Salt Lake (USA) and the Aral Sea (Central Asia), the manmade intervention at Urmia Lake (damming of the catchment, extension of agricultural fields, and causeway construction in the middle part of the lake) threatens its further hydrologic existence.

Sign in / Sign up

Export Citation Format

Share Document