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article

Data mining approach in diagnosis and treatment of chronic kidney disease

Andreea S. Turiac, Małgorzata Zdrodowska

Acta Mechanica et Automatica > 2022 > Vol. 16, no. 3 > 180--188

Chronic kidney disease is a general definition of kidney dysfunction that lasts more than 3 months. When chronic kidney disease is advanced, the kidneys are no longer able to cleanse the blood of toxins and harmful waste products and can no longer support the proper function of other organs. The disease can begin suddenly or develop latently over a long period of time without the presence of characteristic...

article

Calculation of the optimal braking force distribution in three-axle trailers with tandem suspension

Zbigniew Kamiński

Acta Mechanica et Automatica > 2022 > Vol. 16, no. 3 > 189--199

Heavy agricultural trailers can be equipped with a three-axle chassis with a tandem axle set at the rear and one mounted on a turntable at the front. In such trailers, selection of the distribution of braking forces that meet the requirements of the EU Directive 2015/68, with regard to braking, largely depends on the type of tandem suspension used. The requirements for brake force distribution in...

article

Characterisation of potholes formed on bedrock sandstones at Loei Dun, Phetchabun Geopark, Thailand

Vimoltip Singtuen, Thitaree Junjuer

Geologos > 2022 > Vol. 28, No. 1 > 39--50

Phetchabun National Geopark comprises varied geosites; one of the fluvial bedrock landforms distinguished here is Loei Dun. This shows many potholes in Mesozoic sandstone of the Nam Phong Formation (Khorat Group). A genetic study of the occurrence of the Loei Dun potholes lends it a higher geoheritage value. For the present study we did fieldwork and carried out petrographical and geotechnical analyses...

article

Tectonomagmatic settings of Jurassic granitoids in the Sanandaj-Sirjan Zone, Iran: A review

Mohammad Hassan Karimpour, Nargess Shirdashtzadeh, Martiya Sadeghi

Geologos > 2022 > Vol. 28, No. 1 > 19--37

The present paper discusses the geochemical affinities, origin and ages of Jurassic granitoids of the Sanandaj-Sirjan Zone (SaSZ) in the eastern part of the Zagros Thrust Zone. A multidisciplinary, integrated approach was carried out using existing granitoid geochemical data (major, trace, rare earth element and isotopes) and knowledge of the regional geology (geodynamic and metamorphic setting),...

article

Geological and palaeogeographical peculiarities of the Adamów Graben area, central Poland

Marek Widera, Danuta Dzieduszyńska, Joanna Petera-Zganiacz

Geologos > 2022 > Vol. 28, No. 1 > 1--17

From a geological and palaeogeographical point of view, the area of the Adamów Graben in the vicinity of Turek ranks amongst the best known in central Poland, with several opencast mines located here where lignite was exploited for 57 years. These large-surface exposures provide a good opportunity for detailed geological studies of strata of Late Cretaceous to Holocene age. However, the present research...

article

Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses

Priscilla Chima, Christopher Baiyegunhi

Geologos > 2022 > Vol. 28, No. 1 > 61--78

The Stormberg Group comprises the Molteno, Elliot and Clarens formations and is one of four stratigraphical groups that make up the Karoo Supergroup in South Africa. The group is the highest unit in the Karoo Basin, representing the final phase of preserved sedimentation. The major problem with the Stromberg Group is that the mode of transport, hydrodynamic energy conditions and depositional environment...

article

Bank filtration for climate resilience: potentiality of a new site along the Ismailia Canal in Egypt

Kamal Ghodeif, Rifaat A. Wahaab, Thomas Grischek, Hana Afifi, more

Geologos > 2022 > Vol. 28, No. 1 > 51--60

Bank filtration (BF) is a nature-based solution that can provide safe drinking water at a low cost, in being a green technology that benefits from natural ecosystem services and saves energy as well. The objective of the present paper is to evaluate the potentiality of a new site for bank filtration along a surface water source that experiences periods of both high and low flow. This site is located...

article

FTIR and FDS assessment of mineral oil under low electrical discharge

Saliha Boudraa, Fadila Benabed, Issouf Fofana, Leila Mokhnache

Diagnostyka > 2022 > Vol. 23, No. 2 > art. no. 222208

Transformers are crucial elements in the transmission and distribution of electrical energy. The importance of diagnosing these equipments are two-fold: (1) the necessity of service reliability and (2) the likelihood to avoid economic and environmental concerns. Under service conditions, the electrical and thermal stresses or chemical contaminants may degrade the insulation oil inside the transformer...

article

Techniki cyfrowe na rzecz osób starszych i zdrowego starzenia się – wyzwanie ITU na 2022 r.

Andrzej M. Wilk

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne > 2022 > nr 2 > 34--43

article

Decomposition mechanisms of continuously cooled bainitic rail in the critical heat-affected zone of a flash-butt welded joints

Aleksandra Królicka, Andrzej Żak, Roman Kuziak, Krzysztof Radwański, more

Materials Science Poland > 2021 > Vol. 39, No. 4 > 615--625

The joining process of bainitic rails is significant in terms of their industrialization in high-speed and heavy-loaded railways. This paper demonstrates the microstructure changes in the critical zone of the welded joint, which is responsible for the greatest deterioration in mechanical properties. Extensive progress in the decomposition of the retained austenite and bainitic ferrite occurs in the...

article

The Ontology of the War in Ukraine : Cold War Revives

Patryk Reśkiewicz, Krzysztof Najdzik

Przegląd Nauk o Obronności > 2021 > R. 6, Nr 12 > 1--19

Objectives: The identification of political-military determinants of the full-scale phase of the war in Ukraine which has been going on since 2014. The said goal shall be achieved by analyzing the boundary conditions of the Russian security policy against the countries of Central and Eastern Europe and the geostrategic conditioning of the Republic of Belarus. Methods: The following techniques have...

article

The Prospect of Using Unmanned Aerial Vehicles to Maintain an Appropriate Level of Ecological Safety

Rafał Parczewski

Przegląd Nauk o Obronności > 2021 > R. 6, Nr 12 > 20--27

Objectives: Possibilities of using drones in the ecological safety system. Methods: The main purpose of the research conducted in the form of a questionnaire was to get the respondents' opinions on the usefulness of unmanned aerial vehicles (drones) to support the performance of official tasks. (The method of a diagnostic survey with the use of a questionnaire). Results: The collected research material...

article

The analysis of the new farm tractors market in Poland in 2010-2020 in the context of income generated by farmers’ households

Artur Przywara, Milan Koszel, Anna Krawczuk, Alexandros Sotirios Anifantis

Agricultural Engineering > 2022 > Vol. 26, No. 1 > 65--79

The objective of the paper is to analyse changes in the new farm tractor market in Poland and the annual income of farmers’ households generated in the same period. The studies covered the period from 2010 to 2020. The new farm tractors market was analysed with reference to the number of sold tractors, which was measured by the number of registrations. The paper considers quarterly seasonality of...

article

Using the instantaneous angular speed measurement to characterize the transient dynamic response of an inertial system

Andrés Felipe Rodríguez Valencia, Carlos Alberto Romero Piedrahita

Diagnostyka > 2022 > Vol. 23, No. 2 > art. no. 222204

The measurement of instantaneous angular speed in flywheels has been used in Internal Combustion Engines for the diagnosis of faults in the fuel injection systems, combustion quality at idle, ignition system, and especially in the performance assessment of starter motor and battery accumulator, among others. It is the aim of this paper to forecast the use of an experimental flywheel-based test bench,...

article

The effect of added point masses on the geometrically non-linear vibrations of SCSC rectangular plates

Mustapha Hamdani, Mounia El Kadiri, Rhali Benamar

Diagnostyka > 2022 > Vol. 23, No. 2 > art. no. 222206

A point mass added to a plate may have a significant effect on its linear and nonlinear dynamics, including frequencies, mode shapes and the forced response to external loading. In the present paper, a simply supported clamped simply supported clamped rectangular plate (SCSCRP) carrying a point mass is examined. The expressions for the kinetic, linear and non-linear strain energies are derived by...

article

The natural convection inside a 3D triangular cross section cavity filled with nanofluid and included cylinder with different arrangements

Zainab Kareem Ghoben, Ahmed Kadhim Hussein

Diagnostyka > 2022 > Vol. 23, No. 2 > no. art. 222205

In this paper the laminar unsteady natural convection heat transfer of (Al2O3-water) nanofluid inside 3D triangular cross section cavity was investigated. The cavity was heated differentially, the vertical walls were kept at different constant temperatures. The left hot and the right cold. The effect of the solid volume fraction was examined for two values and compared with the pure water results...

article

Analysis of premise infrared heating and ventilation with an exhaust outlet and flat decking air flow

Orest Voznyak, Nadiia Spodyniuk, Olena Savchenko, Oleksandr Dovbush, more

Diagnostyka > 2022 > Vol. 23, No. 2 > art. no. 222207

The article is devoted to solving of urgent problem to analyse energy saving effect from radiant heating and ventilation of premise with exhaust outlet and flat decking air jet. The aim of the work is analysis of energy efficiency of radiant heating systems using infrared heaters and ventilation of the premise due to the effect of a flat decking air jet on the surface of the heater; determination...

article

Two decades of hybrid electric vehicle market

Maciej Menes

Journal of civil engineering and transport > 2021 > Vol. 3, No. 1 > 29--37

The article presents a cross-sectional view of the development of the HEV car market over the last two decades. Hybrid cars are currently the widest group of cars equipped with alternative to classic drive systems. They are also the most numerous group among electric vehicles. The historical meanders of HEV development were described, as well as the current level of development of this market and...

article

Autonomous cars, development of modern transport technology

Cezary Krysiuk

Journal of civil engineering and transport > 2021 > Vol. 3, No. 1 > 17--27

The article presents selected issues from the conducted research and analyzes in the field of the development of autonomous vehicles, carried out under the project: Polish road to Automation of Road Transport. The development of autonomous cars is a global challenge for the automotive industry. The creation of a fully autonomous vehicle capable of transporting passengers and goods without the participation...

article

Selected research capabilities of the Railway Research Institute Test Track Center in Żmigród on the example of Eurobalise General safety concepts used in transport

Dominik Adamski, Łukasz Zawadka

Journal of civil engineering and transport > 2021 > Vol. 3, No. 1 > 9--16

The article describes trackside part of the ERTMS / ETCS system installed on Railway Research Institute Test Track Centre in Żmigród where functional tests of „trackside Control-Command and Signalling" interoperability constituent prototypes i.e. eurobalises were conducted based on the elaborated test schedule and the conditions contained in the specifications of Susbset 040 and Subset 036. Moreover...

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INFONA - science communication portal

Search results

Data mining approach in diagnosis and treatment of chronic kidney disease

Calculation of the optimal braking force distribution in three-axle trailers with tandem suspension

Characterisation of potholes formed on bedrock sandstones at Loei Dun, Phetchabun Geopark, Thailand

Tectonomagmatic settings of Jurassic granitoids in the Sanandaj-Sirjan Zone, Iran: A review

Geological and palaeogeographical peculiarities of the Adamów Graben area, central Poland

Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses

Bank filtration for climate resilience: potentiality of a new site along the Ismailia Canal in Egypt

FTIR and FDS assessment of mineral oil under low electrical discharge

Techniki cyfrowe na rzecz osób starszych i zdrowego starzenia się – wyzwanie ITU na 2022 r.

Decomposition mechanisms of continuously cooled bainitic rail in the critical heat-affected zone of a flash-butt welded joints

The Ontology of the War in Ukraine : Cold War Revives

The Prospect of Using Unmanned Aerial Vehicles to Maintain an Appropriate Level of Ecological Safety

The analysis of the new farm tractors market in Poland in 2010-2020 in the context of income generated by farmers’ households

Using the instantaneous angular speed measurement to characterize the transient dynamic response of an inertial system

The effect of added point masses on the geometrically non-linear vibrations of SCSC rectangular plates

The natural convection inside a 3D triangular cross section cavity filled with nanofluid and included cylinder with different arrangements

Analysis of premise infrared heating and ventilation with an exhaust outlet and flat decking air flow

Two decades of hybrid electric vehicle market

Autonomous cars, development of modern transport technology

Selected research capabilities of the Railway Research Institute Test Track Center in Żmigród on the example of Eurobalise General safety concepts used in transport

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