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Examining a human movement can provide a wealth of information about a patient’s medical condition. The examination process can be used to diagnose abnormal changes (lesions), ability development and monitor the rehabilitation process of people with reduced mobility. There are several approaches to monitor people, among other things with sensors and various imaging and processing devices. In this case a Kinect V2 sensor and a self-developed LabView based application was used, to examine the movement of the lower limbs. The ideal gait pattern was recorded in the RoboGait training machine and the measured data was used to identify the phases of the human gait. During the evaluation, the position of the skeleton model, the associated body joints and angles can be calculated. The pre-recorded ideal and natural gait cycle can be compared.

With the self-developed method the pre-recorded ideal and natural gait cycle can be compared and processed for further evaluation. The evaluated measurement data confirm that a reliable and mobile solution for gait analysis has been created.

Open access
Pollack Periodica
Authors: Andrej Šoltész, Dana Baroková, Zinaw Dingetu Shenga, and Michaela Červeňanská

Presented paper deals with the hydraulic assessment of groundwater flow in the area affected by the realization of the hydraulic gate on the Klátov branch and in the adjacent territory of a dike, which is located on the right-side of Little Danube. This hydraulic assessment is part of the project of the Slovak Water Management Enterprise, which also aims to increase the height and seal the dike on the right-side of the Little Danube. Generally, the project is divided into three phases (Phase I, II and III) to implement different technical measures to protect the area from flooding. The assumption for the execution of the technical measures of the mentioned three project phases is a continuous flood protection of part of the Žitný ostrov area around the Little Danube and the Klátov River branch in the reach from Kolárovo to Jahodná town. Therefore, a 3D mathematical model was created to simulate groundwater flow by changing boundary conditions of surface water flow during flood periods.

Open access

Packing density of aggregate influences greatly the properties of concrete. Maximization of packing density increases the flowing ability and segregation resistance of the fresh concrete and the compressive strength of the hardened concrete. The determination of maximum density is difficult experimentally; therefore several models have been developed for that purpose. However, these models do not take the size of the formwork into account. In this study, 20 different formwork shapes were examined with defined aggregate fractions. Results show that increasing the formwork size increases the packing density of aggregate, and the growth depends on the formwork size and compaction method.

Open access

In this article, the investigation of a press machine with 30 tons of pressing weight is presented. The beam of this machine is an I-beam, which has an open cross-section. It is known that this version of cross-section is sensitive to torsional stress. The stress from warping torsion is normal stress, so the opened cross-section is more sensitive to this type of stress. The bimoment that causes normal stress can also be very high, so dealing with this stress is very important.

Open access
Pollack Periodica
Authors: Ivana Marko, Réka Csicsaiová, Jaroslav Hrudka, Ivona Škultétyová, Štefan Stanko, and Paula Brandeburová

The aims of the research are to focus on the analysis of qualitative parameters of surface runoff from the urbanized area (parking, roadways); subsequently, to compare the measured concentration with the recommendations of Danish and Slovak standards. Rainwater sampling carried out at several sites in Serbia and Slovakia. In the analysis were monitoring, the qualitative parameters as pH value, water conductivity, chemical oxygen demand, and heavy metals. The results show the presence of copper, zinc, lead, aluminum, cadmium, chromium and nickel. The concentration of these parameters was several times higher than the allowed limit values. Based on these results, it is necessary to design measures to ensure surface runoff before infiltration.

Open access
Acta Alimentaria
Authors: J. Krulj, N. Ćurčıć, A. Bočarov Stančıć, J. Kojıć, L. Pezo, L. Peıć Tukuljac, and M. Bodroža Solarov

During previous years, regarding the shifts in climate conditions in temperate region, such as occurrence of high temperatures and prolonged drought, increased occurrence frequencies of Aspergillus flavus and aflatoxins in cereal grains were recorded. A reliable and accurate identification of the fungi is of great importance for evaluating the microbiological risks of contamination. The essential point of the present investigation was molecular characterisation and identification of A. flavus isolates originating from common wheat and spelt grains collected after harvest during the period of three years (2015–2017) in Northern Serbia. A holistic approach that included PCR amplification of two DNA genomic regions and PCR-RFLP assay followed by fragment length analysis, provided complete and comprehensive characterisation of A. flavus isolated from wheat grains. The presented results indicate that there was no difference among the tested Aspergillus isolates on the molecular–genetic level. All 38 strains were identified as A. flavus by sequencing of combined ITS region and β-tubulin gene fragments (acc. no.: MH582473 to MH582510). PCR-RFLP method in combination with a Lab-on-a-chip (LoaC) electrophoresis can be successfully used to rapidly identify A. flavus isolates.

Open access

Recent developments of nanotechnology find its way into various fields of food production in our days. Nanotechnology could offer benefits in development of food products with enhanced functionality for health promotion, or modified texture convenient for elderly, and in quality and safety issues in the food supply chain. Nanoencapsulated bioactive components such as vitamins, antibacterial agents contribute to production of enriched food stuffs with the required appearance, flavour, taste, and texture. Nanomaterials can protect the sensitive compounds from environmental attack, release them in a programmed way, and provide favourable improvement in the bioavailability of nutraceuticals. The innovative approach in food packaging, including the detection, indication, and control of food products, serves the quality and safety improvements.

Open access
Acta Alimentaria
Authors: M. Aloudat, A. Papp, N. Magyar, L. Simon Sarkadi, and A. Lugasi

The purpose of this study was to compare the energy content and macronutrients of forty main popular traditional and modern meals in both Jordan and Hungary with the national and international recommendations. The calculation of energy content and macronutrients were done on traditional and modern recipes by two different softwares (ESHA and NutriComp). Neither Jordanian nor Hungarian foods met the recommended energy content (35% of daily energy intake, 8400 kJ for energy intake). The recipes of both nations are characterised by higher protein, fat, and salt contents than WHO recommendation, a lower fibre content, and sugar content within the recommended limits. The fat energy ratio and saturated fatty acid content of Hungarian recipes are significantly higher than WHO recommendation. In general, Jordanian meals were more likely to meet the inclusion criteria. In conclusion, neither Jordanian nor Hungarian traditional and popular meals meet the international nutritional recommendations for a healthy diet, however, the composition of the real dishes may differ significantly from the recipes depending on the available ingredients and chosen kitchen technology.

Open access

Sudan is suffering from harsh summers, but most of the modern buildings in urban areas are not compatible with the recent and future climate phenomena. Application of cooling devices is relatively expensive and therefore beyond reach. The main objective of this research is to give an overview on the overheating problem and the thermal comfort in buildings. A dynamic energy simulation has been performed for a selected case study using Design Builder Code. The results show that the share of discomfort hours for a typical modern building is 78% and 33% above 26 °C and 32 °C per year, respectively, but after using a combination of different ventilation, shading and building materials options the discomfort hours can be reduced to 77% and 26%, respectively.

Open access

China has experienced rapid urbanization, and the countryside has been abandoned over the past few decades, with some of it left in ruins. Faced with the many challenges brought by urbanization, people are tired of traffic jams and polluted air, which is the disadvantages of urbanization and the countryside, is beginning to be re-recognized and explored with new possibilities. The countryside has become the front line of contemporary Chinese architectural practice. Architects, artists and other different roles try to realize the rebirth of the countryside in many aspects, such as nature and humanity, production and community, through architecture and space.

Open access