Two-Dimensional Hydraulic Modeling and Analysis of Morphological Changes in the Palancia River (Spain) During a Severe Flood Event on October 2000

Author(s):  
Beatriz Nácher-Rodríguez ◽  
Ignacio Andrés-Doménech ◽  
Carles Sanchis-Ibor ◽  
Francisca Segura-Beltrán ◽  
Francisco J. Vallés-Morán ◽  
...  
2015 ◽  
Vol 22 (11) ◽  
pp. 4205-4212
Author(s):  
Lei Lou ◽  
Wan-rong Wu ◽  
Zhao-Qiang Wang ◽  
Xiang-jing Liang

2020 ◽  
Vol 10 (3) ◽  
pp. 820 ◽  
Author(s):  
Marcela Bindzárová Gergeľová ◽  
Žofia Kuzevičová ◽  
Slavomír Labant ◽  
Juraj Gašinec ◽  
Štefan Kuzevič ◽  
...  

Weather-related disasters represent a major threat to the sustainable development of society. This study focuses directly on the assessment of the state of spatial information quality for the needs of hydrodynamic modeling. Based on the selected procedures and methods designed for the collection and processing of spatial information, the aim of this study was to assess their qualitative level of suitability for 3D flood event modeling in accordance with the Infrastructure for Spatial Information in the European Community (INSPIRE) Directive. In the evaluation process we entered geodetic measurements and the digital relief model 3.5 (DMR 3.5) available for the territory of the Slovak Republic. The result of this study is an assessment of the qualitative analysis on three levels: (i) main channel and surrounding topography data from geodetic measurements; (ii) digital relief model; and (iii) hydrodynamic/hydraulic modeling. The qualitative aspect of the input data shows the sensitivity of a given model to changes in the input data quality condition. The average spatial error in the determination of a point’s position was calculated as 0.017 m of all measured points along a watercourse and its slope foot and slope edge. Although the declared accuracy of DMR 3.5 is assumed to be ±2.50 m, in some of the sections in the selected area there were differences in elevation up to 4.79 m. For this reason, we needed a combination of DMR 3.5 and geodetic measurements to refine the input model for the process of hydrodynamic modeling. The quality of the hydrological data for the monitored N annual flow levels was of fourth-class reliability for the selected area.


Author(s):  
Danial Mohammadzadeh S. ◽  
Nader Karballaeezadeh ◽  
Morteza Mohemmi ◽  
Amir Mosavi ◽  
Annamária R. Várkonyi-Kóczy

Design and advancement of the durable urban train infrastructures are of utmost importance for reliable mobility in the smart cities of the future. Given the importance of urban train lines, tunnels, and subway stations, these structures should be meticulously analyzed. In this research, two-dimensional modeling and analysis of the soil-structure mass of the Alan Dasht station of Mashhad Urban Train are studied. The two-dimensional modeling was conducted using Hashash’s method and displacement interaction. After calculating the free-field resonance and side distortion of the soil mass, this resonance was entered into PLAXIS finite element program, and finally, stress and displacement contours together with the bending moment, shear force and axial force curves of the structure were obtained.


1997 ◽  
Vol 110 (1) ◽  
pp. 35-42 ◽  
Author(s):  
N.S. Morrissette ◽  
J.M. Murray ◽  
D.S. Roos

Application of Fourier analysis techniques to images of isolated, frozen-hydrated subpellicular microtubules from the protozoan parasite Toxoplasma gondii demonstrates a distinctive 32 nm periodicity along the length of the microtubules. A 32 nm longitudinal repeat is also observed in the double rows of intramembranous particles seen in freeze-fracture images of the parasite's pellicle; these rows are thought to overlie the subpellicular microtubules. Remarkably, the 32 nm intramembranous particle periodicity is carried over laterally to the single rows of particles that lie between the microtubule-associated double rows. This creates a two-dimensional particle lattice, with the second dimension at an angle of approximately 75 degrees to the longitudinal rows (depending on position along the length of the parasite). Drugs that disrupt known cytoskeletal components fail to destroy the integrity of the particle lattice. This intramembranous particle organization suggests the existence of multiple cytoskeletal filaments of unknown identity. Filaments associated with the particle lattice provide a possible mechanism for motility and shape change in Toxoplasma: distortion of the lattice may mediate the twirling motility seen upon host-cell lysis, and morphological changes observed during invasion.


2006 ◽  
Vol 234 (1-4) ◽  
pp. 159-177 ◽  
Author(s):  
Grégoire M. Maillet ◽  
Claude Vella ◽  
Serge Berné ◽  
Patrick L. Friend ◽  
Carl L. Amos ◽  
...  

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