Partial Saturation as a Liquefaction Countermeasure: A Review

2021 ◽  
Author(s):  
Seyed Mohsen Seyedi-Viand ◽  
E. Ece Eseller-Bayat
Keyword(s):  
Partial Saturation

Field Distribution of Strongly Excited Magnetic Lenses

1975 ◽  
Vol 33 ◽  
pp. 140-141
Author(s):  
M. Strojnik
Keyword(s):  
Flux Density ◽  
Field Distribution ◽  
Optical Axis ◽  
Operating Point ◽  
Pole Piece ◽  
Partial Saturation ◽  
Axial Flux ◽  
The Stability

Magnetic lenses operating in partial saturation offer two advantages in HVEM: they exhibit small cs and cc and their power depends little on the excitation IN. Curve H, Fig. 1, shows that the maximal axial flux density Bz max of one of the lenses investigated changes between points (3) and (4) by 5% as the excitation varies by 40%. Consequently, the designer can relax the requirements concerning the stability of the lens current supplies. Saturated lenses, however, can only be used if (i) unwanted fields along the optical axis can be controlled, (ii) 'wobbling' of the optical axis due to inhomogeneous saturation around the pole piece faces is prevented, (iii) ample ampere-turns can be squeezed into the space available, and (iv) the lens operating point covers a sufficient range of accelerating voltages.

scholarly journals Evaluation of Bed Depth Reduction, Media Change, and Partial Saturation as Combined Strategies to Modify in Vertical Treatment Wetlands

2021 ◽  
Vol 18 (9) ◽  
pp. 4842
Author(s):  
Ismael Vera-Puerto ◽  
Hugo Valdés ◽  
Christian Correa ◽  
Valeria Perez ◽  
Roberto Gomez ◽  
...  
Keyword(s):  
Natural Zeolite ◽  
Domestic Wastewater ◽  
Bottom Layer ◽  
Treatment Wetlands ◽  
Positive Development ◽  
Experimental Plant ◽  
Partial Saturation ◽  
Treatment Wetland ◽  
Media Change ◽  
Depth Reduction

The aim of this work was to evaluate the performance of vertical subsurface flow treatment wetlands (VSSF TWs) for treating rural domestic wastewater when strategies such as bed depth reduction and media change are used in combination with bottom saturation. Two treatment wetland systems were implemented: normal (VF-N), with a bed depth of 1.0 m, and modified (VF-M), with a bed depth of 0.5 m and a bottom layer of natural zeolite. Schoenoplectus californicus was used as experimental plant. These two treatment systems were operated at a hydraulic loading rate of 120 mm/d in two phases. Phase I did not use bottom saturation, while Phase II involved a bottom saturation of the zeolite layer of the VF-M system. The results show that bed depth reduction did not have a significant effect (p > 0.05) in terms of organic matter, solids, and ammonium removal. Conversely, it had a significant influence (p < 0.05) on phosphate as well as a negative effect on pathogen removal. This influence could be explained by initial media capacity for phosphorus removal and filtration importance in the case of pathogens. Partial saturation only had a positive influence on total nitrogen removal. The addition of a bottom layer of natural zeolite showed no positive effect on nutrient removal. The plant showed adaptation and positive development in both VF-N and VF-M. The water balance showed that water loss was not influenced by bed depth reduction. Therefore, according to the previous results, a combination of the proposal modifications to VSSF TWs can be introduced for treating rural domestic wastewater.

scholarly journals Experimental observation on laterally loaded pile in unsaturated silty soil

2019 ◽  
Vol 56 (11) ◽  
pp. 1545-1556 ◽  
Author(s):  
L.M. Lalicata ◽  
A. Desideri ◽  
F. Casini ◽  
L. Thorel
Keyword(s):  
Water Table ◽  
Ground Surface ◽  
Bending Moment ◽  
Data Interpretation ◽  
Partial Saturation ◽  
Laterally Loaded Piles ◽  
Silty Soil ◽  
Centrifuge Tests ◽  
Surface Data ◽  
Laterally Loaded

An experimental study was carried out to investigate the effects of soil partial saturation on the behaviour of laterally loaded piles. The proposed study was conducted by means of centrifuge tests at 100g, where a single vertical pile was subjected to a combination of static horizontal load and bending moment. The study was conducted on a silty soil characterized with laboratory testing under saturated and unsaturated conditions. During flight, two different positions of water table were explored. The influence of density was investigated by compacting the sample with two different void ratios. Finally, the effects of a variation of saturation degree on the pile response under loading were studied by raising the water table to the ground surface. Data interpretation allows drawing different considerations on the effects of partial saturation on the behaviour of laterally loaded piles. As expected, compared to saturated soils, partial saturation always leads to a stiffer and resistant response of the system. However, the depth of the maximum bending moment is related to the position of the water table and the bounding effects induced by partial saturation appear to be more important for loose soils.

scholarly journals Improved passive catheter tracking with positive contrast for CMR-guided cardiac catheterization using partial saturation (pSAT)

2017 ◽  
Vol 19 (1) ◽  
Author(s):  
Mari Nieves Velasco Forte ◽  
Kuberan Pushparajah ◽  
Tobias Schaeffter ◽  
Israel Valverde Perez ◽  
Kawal Rhode ◽  
...  
Keyword(s):  
Cardiac Catheterization ◽  
Positive Contrast ◽  
Partial Saturation ◽  
Catheter Tracking

scholarly journals Uptake of HO<sub>2</sub> radicals onto Arizona test dust particles using an aerosol flow tube

2014 ◽  
Vol 14 (14) ◽  
pp. 7397-7408 ◽  
Author(s):  
P. S. J. Matthews ◽  
M. T. Baeza-Romero ◽  
L. K. Whalley ◽  
D. E. Heard
Keyword(s):  
Atmospheric Pressure ◽  
Room Temperature ◽  
Reaction Times ◽  
Dust Particles ◽  
Partial Saturation ◽  
Flow Tube ◽  
Aerosol Flow ◽  
Uptake Coefficients ◽  
Gas Expansion ◽  
Dust Surface

Abstract. Uptake coefficients for HO2 radicals onto Arizona test dust (ATD) aerosols were measured at room temperature and atmospheric pressure using an aerosol flow tube and the sensitive fluorescence assay by gas expansion (FAGE) technique, enabling HO2 concentrations in the range 3–10 × 108 molecule cm−3 to be investigated. The uptake coefficients were measured as 0.031 ± 0.008 and 0.018 ± 0.006 for the lower and higher HO2 concentrations, respectively, over a range of relative humidities (5–76%). A time dependence for the HO2 uptake onto the ATD aerosols was observed, with larger uptake coefficients observed at shorter reaction times. The combination of time and HO2 concentration dependencies suggest either the partial saturation of the dust surface or that a chemical component of the dust is partially consumed whilst the aerosols are exposed to HO2. A constrained box model is used to show that HO2 uptake to dust surfaces may be an important loss pathway of HO2 in the atmosphere.

Influence of Partial Saturation on the Compressibility of Foundation Soils: A Case Study

2012 ◽  
pp. 299-306
Author(s):  
Francesco Carnevale ◽  
Federica Caneparo ◽  
Piero Pampanin ◽  
Francesco Colleselli ◽  
Gianpiero Mayerle ◽  
...  
Keyword(s):  
Partial Saturation

scholarly journals Isomorphism, institutionalization and legitimacy: operational auditing at the court of auditors

2007 ◽  
Vol 11 (spe1) ◽  
pp. 153-175 ◽  
Author(s):  
Carlos Alberto Sampaio de Freitas ◽  
Tomás de Aquino Guimarães
Keyword(s):  
Innovation Diffusion ◽  
Institutional Environment ◽  
Secondary Level ◽  
Institutional Isomorphism ◽  
Partial Saturation ◽  
Moral Legitimacy ◽  
The Relationship ◽  
Over Time ◽  
Cognitive Legitimacy

The aim of this paper is to verify the nature of the relationship between the concept of legitimacy and the phenomenon of institutionalization of operational auditing at the Court of Auditors in a context of institutional isomorphism. A documental examination was conducted covering the period of 1987 to 2004 and 18 people involved in the aforementioned activity at the Court of Auditors were interviewed. The results suggest that there is a relationship between isomorphism and legitimacy but only concerning one type of legitimacy. The phenomenon of isomorphism acts in the sense of checking cognitive legitimacy while other factors are at work which are connected to the culture and institutional environment of the country, which interfere in the dimension of moral legitimacy, resulting in institutionalization of the activity at a secondary level in the analyzed organization. It was seen that the process of institutionalization, in this case, has a circular characteristic, in which the phases of innovation, diffusion, partial saturation and partial deinstitutionalization follow one another cyclically, modifying the activity of operational auditing over time at the Court of Auditors.

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