The meshfree localized Petrov-Galerkin approach in slope stability analysis

The article focuses on the use of the meshfree numerical method in the field of slope stability computations. There are many meshfree implementations of numerical methods. The article shows the results obtained using the meshfree localized Petrov-Galerkin method (MLPG) - localized weak-form of the equilibrium equations with an often used elastoplastic material model based on Mohr-Coulomb (MC) yield criterion. The most important aspect of MLPG is that the discretization process uses a set of nodes instead of elements. Node position within the computational domain is not restricted by any prescribed relationship. The shape functions are constructed using just the set of nodes present in the simple shaped domain of influence. The benchmark slope stability numerical model was performed using the developed meshfree computer code and compared with conventional finite element (FEM) and limit equilibrium (LEM) codes. The results showed the ability of the implemented theoretical preliminaries to solve the geotechnical stability problems.Web of Science151847

Shoulder Dislocation Incidence and Risk Factors-Rural vs. Urban Populations of Poland.

(1) Background: The aim of this study was to analyze the incidence of shoulder dislocation and to estimate non-modifiable risk factors in rural and urban subgroups in Poland. (2) Methods: The study covered the entire Polish population, divided into urban and rural subgroups and observed between 1 January 2014 and 31 December 2014. The study population consisted of Polish patients with a diagnosis of shoulder dislocation (S43.0) in accordance with the International Statistical Classification of Diseases and Related Health Problems (ICD-10). Records were obtained from the public health care provider National Health Found (Narodowy Fundusz Zdrowia, NFZ). Based on these data, we assessed shoulder dislocation incidence and risk rates, stratifying the study sample by sex, age and place of residence (rural or urban) using the Central Statistical Office (GUS) personal territorial code (TERYT). (3) The incidence was 25.97/100,000 person-years in rural areas and 25.62/100,000 person-years in urban areas. We did not find significant differences in the incidence between the two subgroups. The highest incidence (75.12/100,000 person-years) and the highest risk for shoulder dislocation were found among subjects 80+ years old living in urban areas. Furthermore, men in the third decade of their life living in urban areas showed the highest risk (OR = 7.8, 95% CI; 6.44-9.45, p < 0.001). In both subgroups, the likelihood of shoulder dislocation was significantly lower for the female sex and among children ≤9 years old. However, girls living in rural areas presented with a significantly higher likelihood for dislocation compared with their peers living in urban environments. (4) Conclusions: No significant difference in the incidence rate of shoulder dislocation between Polish residents living in rural and urban areas emerged. The highest incidence was observed among female subjects 80+ years old living in urban environments. The highest risk was found among men in the third decade of their life living in urban areas. In addition, girls in the first decade of their life living in rural areas had more shoulder dislocations than girls living in urban environments. Shoulder dislocation is dominant in female subjects aged 70-79 living in rural areas and in females 80+ years old living in urban areas

Correlation of Patellofemoral Chondromalacia and Body Mass Index (BMI) in Relation to Sex and Age Analysis of 1.5T and 3.0T Magnetic Resonance (MR) Images Using the Outerbridge Scale.

BACKGROUND Cartilage disease (chondromalacia) is most commonly found in the patellofemoral joint. Non-invasive magnetic resonance imaging methods are used to assess the severity of chondromalacia. The available literature lacks papers describing the predilection of chondromalacia changes to BMI assessed on the basis of geometric data that can be assessed by 1.5T and 3.0T MRI. The aim of this study was to assess the relationship between the severity of chondromalacia of the patellofemoral joint and age, sex, and BMI assessed on the 1.5T and 3.0T MRI scanners. MATERIAL AND METHODS The study involved 324 patients, including 159 (49%) women and 165 (51%) men, aged 8-87 years (mean age: 45.1±20.9). The studied group had a BMI in the range of 14.3-47.3 (M: 27.7±5.02). A 1.5T and 3.0T MRI scanner were used in the study. To assess the cartilage of the patellofemoral joint, Outerbridge scales were used. RESULTS The age of the patients showed a significant correlation (Spearman's rank, P0.05).  Significant more degeneration was found at the 1.5T scanner compared to the 3.0T MRI (P<0.0025). CONCLUSIONS The severity of chondromalacia significantly depends on age and BMI level. There is a stronger correlation between the degree of chondromalacia and BMI in women than in men

Relationship between Outerbridge Scale and Chondropathy Femorotibial Joint in Relation to Gender and Age-The Use of 1.5T and 3.0T MRI Scanners.

Background and Objective: Magnetic resonance imaging (MRI) enables the effective evaluation of chondromalacia of the knee joint. Cartilage disease is affected by many factors, including gender, age, and body mass index (BMI). The aim of this study was to check the relationship between the severity of chondromalacia of the femoro-tibial joint and age, gender, and BMI assessed with 1.5T and 3.0T MRI scanners. Materials and Methods: The cross-observational study included 324 patients-159 (49%) females and 165 (51%) males aged 8-87 (45.1 ± 20.9). The BMI of study group was between 14.3 and 47.3 (27.7 ± 5.02). 1.5T and 3.0T MRI scanners were used in the study. The articular cartilage of the knee joint was assessed using the Outerbridge scale. Results: The age of the patients showed a significant correlation with Outerbrige for each compartment of the femorotibial joint (Spearman's rank correlation rho: 0.69-0.74, p &lt; 0.0001). A higher correlation between BMI and Outerbridge was noted in the femur medial (rho = 0.45, p &lt; 0.001) and the tibia medial (rho = 0.43, p &lt; 0.001) than in the femur lateral (rho = 0.29, p &lt; 0.001) and the tibia lateral compartment (rho = 0.34, p &lt; 0.001). Conclusions: The severity of chondromalacia significantly depends on age and BMI level, regardless of gender

Suitability of engineering-geological environment on the basis of its permeability coefficient: Four case studies of fine-grained soils

The aim of the article is to compare two classifications systems of engineering-geological environment sustainability in terms of its permeability evaluated on the basis of permeability coefficient. The first evaluated classification assumes a permeable environment to be a positive characteristic in the engineering-geological assessment, while the other considers an impermeable environment as favourable. The four fine-grained soil materials were selected, as they had very similar, almost identical grains-size distribution, but different microstructure characterized by grains sphericity, angularity, and roughness. At the same time, the influence of changes in the density of soil materials (density index 10%, 30%, 60%, 90%) was analysed. Permeability coefficient was determined using six methods (empirical formulae, laboratory and microscopic analysis). The laboratory method falling head test (FHT) was taken as a reference test that reflected the actual water flow through the soil. It was found that with an increase in grain angularity and roughness (and a decrease in sphericity), the permeability coefficient was decreasing and this trend culminated along with gradual compaction. Moreover, the research shows that unsuitable methods may classify soil materials into wrong engineering-geological permeability classes, which may have negative consequences during engineering-geological or geotechnical assessment and cause subsequent problems in foundation engineering.Web of Science1421art. no. 641

Analysis of the remediation of coal tar-contaminated groundwater using ex situ remediation

The article describes the remediation of contaminated groundwater during the ex situ remediation of coal tar contamination following the closure of a coking plant in the Moravian-Silesian Region (Czech Republic). The aim of the article is to point out the advantages of ex situ soil remediation via the excavation of the contaminated geological environment combined with thermal desorption, a method of removing contaminants both from soil and groundwater. Its advantage is the absolute qualitative and quantitative control over the contaminated soil with the possibility of precise segmentation into contaminated and non-contaminated soils. Next, all contaminated groundwater may be pumped off upon the construction of sealing walls to control groundwater flows. To excavate the soil, it is necessary to reduce the contaminated groundwater level inside the sealing walls and thus create conditions for the extraction of contaminated soils using standard machinery. In detail, the article describes the removal of the contaminated groundwater and compares the quality of the pumped and inflowing water before and after the remediation. The locality is characteristic of a high horizontal and vertical grain-size heterogeneity of gravel-sand, which led to a varying filtration coefficient affecting the capacities of pumped groundwater quantity during the remediation. At the start of the remediation process, the contaminant levels exceeded the limits by the Czech Environmental Inspectorate several times. The post-remediation monitoring showed that all the contaminant levels were below the limit. Surprisingly, the overall groundwater contamination amounted to 232.86 t of contaminants as non-aqueous phase liquids, and 6872.9 kg of dissolved contaminants. As much as 12,200 t of contaminants were removed from the soil.Web of Science1414art. no. 218

The Assessment of the Moths (Lepidoptera) Occurence in Extensive orchards of Karviná district

Import 26/06/2013Diplomová práce se zabývá nočními motýly v extenzivních ovocných sadech a jejich vazbou na kvetoucí rostliny. V teoretické části je představená charakteristika nejpočetnějších a největších čeledí nočních motýlů. Dále jsou tyto čeledi, podle moderní klasifikace, zařazeny v systému, a to až do podčeledí. V praktické části jsou popsány jednotlivé druhy nočních motýlů, které byly nalezeny a determinovány v extenzivních ovocných sadech v Orlové-Lazech (okres Karviná) v letech 2010 – 2012. Následně z druhů rostlin, které byly zde nalezeny, byly vytvořeny fytocenologické snímky. V poslední části je, pomocí příslušných programů, vyhotoveno statistické zhodnocení rostlin a nočních motýlů. V příloze jsou umístěny další fotografie nočních motýlů, některé druhy rostlin a okolní krajina.This thesis deals with night butterflies in extensive orchards, and their relationship to flowering plants. The theoretical part presents the characteristics of the largest and the biggest tribes of night butterflies. Further, these tribes, according to modern systematics, are registered in the system, namely as subtribes. The practical part describes the different types of butterflies, that were found and determined in extensive orchards in Orlová-Lazy (Karviná region) in the years 2010 – 2012. The phytosociological frames were consequently created by the species of plants that have been found there. The last part, with the help of appropriate programmes, gives a statistical evaluation of plants and night butterflies. The appendix includes additional photographs taken of night butterflies, some of the plants, and surrounding landscape.Prezenční546 - Institut environmentálního inženýrstvívýborn

Analysis of Selected Case Studies Civil Engineering Structures with Difficult Engineering Geological Conditions

Import 02/11/2016Hlavním cílem disertační práce byla analýza vybraných případových studií inženýrských objektů s problémovými inženýrskogeologickými poměry, pomocí realizace 5 studií. Práce klade důraz na skutečnost, že jedno geologické prostředí nebo inženýrský objekt v geologickém prostředí se může pro různé praktické účely a situace chovat zcela odlišným způsobem. Tato okrajová podmínka měla, z pohledu selekce výběru situací, klíčovou roli. Předmětem disertační práce byly čtyři geologická prostředí a jeden inženýrský objekt v geologickém prostředí, které byly charakterizovány ze všech možných inženýrskogeologických pohledů. Dále byl proveden návrh metodiky selekce vhodných situací, ve kterých byly prezentovány případové studie s různými problémovými inženýrskogeologickými poměry (dle různých účelů) v určitém konkrétním geologickém prostředí (selekce vybraných 4 prostředí) a v jednom konkrétně vybraném inženýrském objektu v geologickém prostředí, vzniklém antropogenním ovlivněním (lomová jáma). Důležitost, kladená na výběr typových lokalit, je motivována možností aplikace v jiných oblastech České a Slovenské republiky. Čtyři realizované studie se týkaly rozdílného chování vybraných geologických prostředí sprašových (studie č.1), fluviálních (studie č.2), deluviálních (studie č.3) a neogenních sedimentů (studie č.4). Poslední (studie č.5) charakterizovala inženýrský objekt umístěný v geologickém prostředí (lomová jáma). Provedené studie v disertační práci jsou příspěvkem k jedné z nedůležitějších rolí inženýrské geologie, a to poukázat na rozdílnou roli inženýrskogeologických poměrů, na jejich různé chování při různých situacích nebo geodynamických procesech. Uvědomění si tohoto rozdílného chování je nejdůležitějším příspěvkem práce, protože umožňuje porovnání studií v jedné práci, co umožní lepší informovanost inženýrských geologů, geotechniků a projektantů o této problematice.The major goal of the dissertation was to analyse selected case studies of engineering structures with problem engineering-geological conditions by means of implementing 5 studies. The dissertation emphasises the fact that one geological environment or engineering structure in the geological environment may behave differently considering diverse practical purposes and situations. This boundary condition was of the key importance in terms of selecting the situations. The subject of the dissertation were four geological environments and one engineering structure in the geological environment that were characterised from all possible engineering-geological points of view. Next, a methodology of selection of suitable situations was proposed, which presented case studies with various problem engineering-geological conditions (based on various purposes) in certain specific geological environments (selected were 4 environments) and one specifically selected engineering structure in the geological environment that had been shaped anthropogenically (quarry). The importance of the choice of the type localities was motivated by potential application in other localities of the Czech Republic and Slovakia. The four implemented studies concerned different behaviours of selected geological environments of loess (Study 1), fluvial (Study 2), deluvial (Study 3) and Neogene sediments (Study 4). The last study (Study 5) characterised an engineering structure situated in the geological environment of a quarry. The implemented studies within the dissertation contribute to one of the most crucial roles of engineering geology, i.e. point at the differences in the engineering-geological conditions, their diverse behaviours in different situations or geodynamic processes. The awareness of the differences in their behaviours is the most important contribution of the dissertation as it permits a comparison of several studies in one work. This may provide up-to-date information on the issue to engineering geologists, geotechnicians and designers.Prezenční541 - Institut geologického inženýrstvívyhově

Moths (Lepidoptera) of Extensive Orchards within Karviná Mining Landscape

Import 04/07/2011Bakalářská práce se zabývá nočními motýly v extenzivních ovocných sadech a jejich vazbou na kvetoucí rostliny. V teoretické části je představená obecná charakteristika motýlů se zaměřením na noční motýly. Dále je zde uvedena systematika nočních motýlů s rozdělením na čeledi a ochrana motýlů s rozdělením na kritický ohrožené, silně ohrožené a ohrožené druhy. V praktické části jsou popsány jednotlivé druhy nočních motýlů determinovaných v extenzivních ovocných sadech v Orlové-Lazech (okres Karviná). Následně jsou vyjmenovány druhy rostlin, které byly zde nalezeny. V příloze jsou umístěny fotografie nočních motýlů a některých rostlin provedených v době výzkumu.This bachelor work deals with night butterflies in extensive orchards and their relationship to flowering plants. The theoretical part presents the general characteristics of butterflies, focusing on night butterflies. Further it introduces systematics of night butterflies in the family division and distribution of butterflies with the protection of critically endangered, endangered and threatened species. The practical part describes the different types of butterflies determined in extensive orchards in Orlová - Lazy (Karviná region). Consequently there is a list of species of plants that have been found there. The thesis includes photographs taken of night butterflies plus some of the plants at the time of the research.Prezenční546 - Institut environmentálního inženýrstvívýborn