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Possible applications of hardening slurries with fluidal ashes in environment protection structures

References [1] Aksielrud G.A., Altszuler M.A.: Movement of mass in porous bodies , Warsaw: WNT (1987). [2] Amadi Agapitus: Hydraulic Conductivity Tests for Evaluating Compatibility of Lateritic Soil - Fly Ash Mixtures with Municipal Waste Leachate , Geotechnical and Geological Engineering, 29 (3) , 259−265, DOI: 10.1007/s10706-010-9358-9 (2011). [3] Borys M.: Vertical cut-off walls of hardening slurries in the structures and beds of fl ood embankments , Wiadomości melioracyjne i łąkarskie

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Possible Applications of Hardening Slurries with Fly Ash from Thermal Treatment of Municipal Sewage Sludge in Environmental Protection Structures

Protection, PolishAcademy of Sciences, 37 (1), 115-134. Falaciński P. (2012) Possible applications of hardening slurries with fluidal fly ashes in environment protection structures, Archives of Environmental Protection, Polish Academy of Sciences, 38 (3), 91-104. Kledyński Z., Rafalski L. (2009) Hardening slurries, Warszawa, KILiW PAN, IPPT PAN (in Polish). Kłosiński B. (2003) Technical conditions for execution diaphragm walls, Wydawnictwo Instytut Badawczy Dróg i Mostów, Seria I, Informacje, instrukcje, z. 35, Warszawa (in

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Construction and Monitoring of Cement/Bentonite Cutoff Walls: Case Study of Karkheh Dam, Iran

Karkheh Dam, Iran. Figure 2 Cross-section and connection details between the cutoff wall and dam foundation. Figure 3 Longitudinal section of Karkheh Dam showing dam geological layers. Restoration of the reservoir in 2001 and following attainment of the reservoir level of 210.5 masl, considering the normal water level (220 masl), was related to extreme seepage over the foundation and abutments along with unacceptable hydraulic gradient (0.2). Accordingly, the extending of the cut-off wall system was taken into account through providing four new

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Efficiency assessment of vertical barriers on the basis of flow and transport numerical modeling

vertical bentonite barriers for old sanitary landfill containment , Proceedings of the 13th European Conference on Soil Mechanics and Geotechnical Engineering, Praha, 2003, Vol. 1, 409-414. [13] SOGA K., JOSHI K., Long-term Performance of cement-bentonite cut-off walls: A case study , Proceedings of the 6th International Congress on Environmental Geotechnics, New Delhi, 2010, Vol. 1, 151-164. [14] Van GENUCHTEN M.T., A closed-form equation for predicting the hydraulic conductivity of unsaturated soil , Soil Science Society Journal, 1980

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How Informative are the Vertical Buoyancy and the Prone Gliding Tests to Assess Young Swimmers' Hydrostatic and Hydrodynamic Profiles?

How Informative are the Vertical Buoyancy and the Prone Gliding Tests to Assess Young Swimmers' Hydrostatic and Hydrodynamic Profiles?

The aim of this research was to develop a path-flow analysis model to highlight the relationships between buoyancy and prone gliding tests and some selected anthropometrical and biomechanical variables. Thirty-eight young male swimmers (12.97 ± 1.05 years old) with several competitive levels were evaluated. It were assessed the body mass, height, fat mass, body surface area, vertical buoyancy, prone gliding after wall push-off, stroke length, stroke frequency and velocity after a maximal 25 [m] swim. The confirmatory model included the body mass, height, fat mass, prone gliding test, stroke length, stroke frequency and velocity. All theoretical paths were verified except for the vertical buoyancy test that did not present any relationship with anthropometrical and biomechanical variables nor with the prone gliding test. The good-of-fit from the confirmatory path-flow model, assessed with the standardized root mean square residuals (SRMR), is considered as being close to the cut-off value, but even so not suitable of the theory (SRMR = 0.11). As a conclusion, vertical buoyancy and prone gliding tests are not the best techniques to assess the swimmer's hydrostatic and hydrodynamic profile, respectively.

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Correlations Between Regional Accumulation of Calcium in the Culprit Arteries and Plaque Burden in Acute Coronary Syndromes

Abstract

Introduction: The association between a high calcium score at the level of the unstable coronary lesions and the different characteristic of culprit lesions which result in an acute coronary syndrome (ACS) has not been described yet. We aimed to study the correlation between the accumulation of calcium within the vessel wall of a coronary artery and the plaque burden of culprit lesions that develop an acute coronary event. Material and methods: A total of 45 patients with ACS (22 unstable angina, 23 nonST elevation myocardial infarction) underwent 64-slice CCTA. In all patients a complex CT analysis of the culprit plaques was performed and the calcium score for each coronary artery was computed. Results: We found a significant correlation between a calcium score higher than 100 and the plaque volume (r = 0.85. p = 0.01). Selecting a cut-off value of 100 HU for regional calcium score at the level of the coronary artery, we found that those arteries with Ca score higher than 100 presented significantly larger plaque volumes than the ones with calcium score below 100 (110.8 ml vs 82.4 ml, p <0.0001 for left anterior descending artery, 111.09 ml vs 82.5 ml, p = 0.0005 for circumflex artery, and 132.78 ml vs 76.23 ml for right coronary artery). Conclusion: Our data shows that in ACS, the severity of the culprit lesions correlates with regional accumulation of calcium within the vessel wall.

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Immobilization of selected heavy metals from fly ash from thermal treatment of municipal sewage sludge in hardening slurries

Abstract

The growing number of municipal sewage treatment plants in Poland raises the problem of managing more and more sludge. The thermal treatment of municipal sewage sludge (TTMSS), which significantly reduces the volume of waste, results in an increase in the concentration of heavy metals in the fly ashes – the final products of the process. The search for methods of utilization of fly ash from TTMSS resulted in attempts to use it in hardening slurries widely used in hydro-engineering. Due to the nature of the application of this material in the cut-off walls (exposure to groundwater flow) one of the key issues is the degree of heavy metal immobilization. The paper attempted to determine the degree of leaching of selected heavy metals from the hardened hardening slurry, composed of fly ash from TTMSS. For this purpose, the eluates were prepared from samples, after various periods of curing, using a dynamic short-term method called “Batch test”. The liquid used for leaching was: distilled water and 0.1 molar EDTA solution – to determine the amount of potentially mobile heavy metal forms. The results show the possibility of the safe usage of fly ash from TTMSS as an additive for hardening slurries.

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Theorising Public and Private Spheres

Abstract

The 19th century saw an expression of women’s ardent desire for freedom, emancipation and assertion in the public space. Women hardly managed to assert themselves at all in the public sphere, as any deviation from their traditional role was seen as unnatural. The human soul knows no gender distinctions, so we can say that women face the same desire for fulfillment as men do. Today, women are more and more encouraged to develop their skills by undertaking activities within the public space that are different from those that form part of traditional domestic chores. The woman of the 19th century felt the need to be useful to society, to make her contribution visible in a variety of domains. A woman does not have to become masculine to get power. If she is successful in any important job, this does not mean that she thinks like a man, but that she thinks like a woman. Women have broken through the walls that cut them off from public life, activity and ambition. There are no hindrances that can prevent women from taking their place in society.

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Multiculturalism and Ostalgie

Abstract

“Ostalgie” is coming from a German word referring to nostalgia for aspects of life in East Germany, and not only. It is a new multipurpose and new expression related the German terms “Nostalgie” (nostalgia in Italian) and Ost (East). Its anglicised equivalent, ostalgia, it is rhyming with “nostalgia” and it is also sometimes used. The collapse of Soviet Union and the Berlin Wall destruction, was the concept protected concrete barrier that physically and ideologically divided Berlin from ‘61 to ’89, It especially divided West and East European countries, the wall cut off West Berlin from almost all of surrounding East Germany and East Berlin until government officials opened it in November 1989. Formally its demolition began on 13 June 1990 and finished in 1992 and coincides in some generation from the Warsaw Pact countries, legally the Treaty of Friendship, Cooperation with the “Mutual Assistance” URSS of the birth of “ostalgie”, that it goes against with modern principle of multicultural society and globalisation of the world. At the eighth congress of the communist party Lenin recognized the right to self-determination of the populations of the empire and promised them significant concessions, although its final intent was to reach the true dictatorship of the proletariat which would have rendered the ethnic-national distinctions useless. The Soviet Union became the incubator of new nations with the dissolving of the Russian nation in the Soviet state. Does the “ostalgie” refer to the USSR, is this compatible with multiculturalism? Is it compatible with that plurality of tending different cultures that coexists in mutual respect and which implies the preservation of their specific traits by rejecting any type of homologation or fusion in the dominant culture?

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CA19-9 serum levels predict micrometastases in patients with gastric cancer

micrometastases and preoperative CA19-9 serum levels to determine the cut-off level for micrometastases detection, along with the respective sensitivities and specificities. Finally, the prognostic value of this cut-off for CA19-9 serum levels was investigated for a group of patients with node-negative gastric cancer. Patients and methods Between 1992 and 2013, a total of 1,129 patients underwent surgery for gastric cancer at the University Clinical Centre Maribor, Slovenia. From these, only node-negative patients with complete clinicopathological records and

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