Chemical and physical temporal and spatial changes in twenty‐five year‐old mine soils in southeast Ohio

2021 ◽  
Author(s):  
M. S. Demyan ◽  
N. E. Smeck
Keyword(s):  
Mine Soils ◽  
Spatial Changes ◽  
Temporal And Spatial

TEMPORAL AND SPATIAL CHANGES IN THE WATER QUALITY OF THE ARKANSAS RIVER THROUGH THE LITTLE ROCK METROPOLITAN AREA

2016 ◽  
Author(s):  
Matthew Carey ◽  
◽  
Laura Ruhl ◽  
Erik D. Pollock
Keyword(s):  
Water Quality ◽  
Metropolitan Area ◽  
Little Rock ◽  
Arkansas River ◽  
Spatial Changes ◽  
Temporal And Spatial

scholarly journals Temporal and spatial changes in wall shear stress during atherosclerotic plaque progression in mice

2018 ◽  
Vol 5 (3) ◽  
pp. 171447 ◽  
Author(s):  
R. Xing ◽  
A. M. Moerman ◽  
Y. Ridwan ◽  
M. J. Daemen ◽  
A. F. W. van der Steen ◽  
...  
Keyword(s):  
Shear Stress ◽  
Wall Shear Stress ◽  
Mouse Model ◽  
Atherosclerotic Plaque ◽  
Proximal Part ◽  
Plaque Progression ◽  
Plaque Composition ◽  
Spatial Changes ◽  
Temporal And Spatial ◽  
Wall Shear

Wall shear stress (WSS) is involved in atherosclerotic plaque initiation, yet its role in plaque progression remains unclear. We aimed to study (i) the temporal and spatial changes in WSS over a growing plaque and (ii) the correlation between WSS and plaque composition, using animal-specific data in an atherosclerotic mouse model. Tapered casts were placed around the right common carotid arteries (RCCA) of ApoE −/− mice. At 5, 7 and 9 weeks after cast placement, RCCA geometry was reconstructed using contrast-enhanced micro-CT. Lumen narrowing was observed in all mice, indicating the progression of a lumen intruding plaque. Next, we determined the flow rate in the RCCA of each mouse using Doppler Ultrasound and computed WSS at all time points. Over time, as the plaque developed and further intruded into the lumen, absolute WSS significantly decreased. Finally at week 9, plaque composition was histologically characterized. The proximal part of the plaque was small and eccentric, exposed to relatively lower WSS. Close to the cast a larger and concentric plaque was present, exposed to relatively higher WSS. Lower WSS was significantly correlated to the accumulation of macrophages in the eccentric plaque. When pooling data of all animals, correlation between WSS and plaque composition was weak and no longer statistically significant. In conclusion, our data showed that in our mouse model absolute WSS strikingly decreased during disease progression, which was significantly correlated to plaque area and macrophage content. Besides, our study demonstrates the necessity to analyse individual animals and plaques when studying correlations between WSS and plaque composition.

The Spatial-Temporal Change Pattern of Wetland in the Middle-Lower Yangtze River: A Case Study of Wuhu, Anhui

2014 ◽  
Vol 513-517 ◽  
pp. 3228-3232 ◽  
Author(s):  
Xiao Li Tao ◽  
Yong Ping Bai
Keyword(s):  
Quantitative Methods ◽  
Temporal Change ◽  
Remote Sensing Image ◽  
Land Uses ◽  
Change Pattern ◽  
Spatial Changes ◽  
Temporal And Spatial ◽  
Gis Software ◽  
Urban Sprawling

Wetlands play a number of roles in the environment, which are also considered the most biologically diverse of all ecosystems. Utilizing RS and the GIS software, remote datum were matched and classified. By these transactions, the temporal and spatial changes of wetland landscape are explored in Wuhu, combining qualitative analysis and quantitative methods. This paper analyzed the time-spatial revolution process which indicated that, firstly the area of wetland reduced rapidly from remote sensing image in 1988, 2001 and 2005, secondly the exterior of urban changed acutely and the interior were protected well in view of spatial pattern. Moreover, driving force factors were pointed out. Human activities, especially urbanization were the main causes of wetlands degradation. Simultaneity, the development of farming, the construction of infrastructure and nature were important factors. Owing to rapid economic development and urban sprawling, wetlands are encountering threaten to be converting to other land uses. Thus, the paper provides policy advices for wetland conservation and urban planning toward sustainable development.

Temporal and spatial changes in population structure of the freshwater macroalga Nitellopsis obtusa (Desv.) J.Groves

2017 ◽  
Vol 165 (1) ◽  
pp. 103-114 ◽  
Author(s):  
A. Boissezon ◽  
D. Auderset Joye ◽  
T. Garcia
Keyword(s):  
Population Structure ◽  
Nitellopsis Obtusa ◽  
Spatial Changes ◽  
Temporal And Spatial

scholarly journals Temporal and Spatial Changes in the Pattern of Iba1 and CD68 Staining in the Rat Brain Following Severe Traumatic Brain Injury

2015 ◽  
Vol 04 (02) ◽  
pp. 9-23 ◽  
Author(s):  
Debbie Smith ◽  
Diane Brooks ◽  
Eric Wohlgehagen ◽  
Thomas Rau ◽  
David Poulsen
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Rat Brain ◽  
Severe Traumatic Brain Injury ◽  
Spatial Changes ◽  
Temporal And Spatial
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