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Capacity analysis of the selected track system in partially ordered space
PublikacjaA proper location of the interval sections has significant impact on the traffic flow in the railway track network. This issue is critical during line modernization as well as when a new solution accounting for the traffic forecast at particular element of the railway track network is developed . However, the situation is more complex and more expensive for railway stations since improvement of the capacity requires critical organizational...
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Capacity Estimation of the OFDMA and SC-FDMA Radio Interface for UMTS-LTE
PublikacjaIn the paper a method of capacity estimation for the UMTS-LTE interface is presented. Both the OFDMA and SC-FDMA technology has been considered. A method of physical resource allocation for users is mentioned and analytical results of theoretical throuhput calculation are described.
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The Impact of Shrubby Floodplain Vegetation Growth on the Discharge Capacity of River Valleys
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Determination of the bearing capacity of pile foundations based on CPT test results
PublikacjaAnalityczne określanie pełnej krzywej obciążenie - osiadanie na podstawie parametrów geotechnicznych wciąż stanowi bardzo trudne zadanie naukowe i inżynierskie. W pracy przedstawiono metodę bezpośredniego wykorzystania oporów na stożku sondy statycznej do określania pełnej krzywej osiadania dla pali Vibro-Fundex. W sumie jako materiał weryfikacyjny wykorzystano 94 próbne obciążenia statyczne pali.
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Anserine and carnosine supplementation in the elderly: Effects on cognitive functioning and physical capacity
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Numerical analysis on axial capacity of steel built-up battened columns
PublikacjaThis paper deals with the numerical analysis aimed at study the bearing capacity of pinended steel built-up columns under axial compression. Finite element (FE) models were performed for the columns presented in the literature. The main problem discussed in the article is the shape and magnitude of geometric imperfections introduced into the numerical FE model, necessary to obtain the load capacity consistent with the experimental...
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Estimation of Screw Displacement Pile-Bearing Capacity Based on Drilling Resistances
PublikacjaThis article presents an engineering, empiricalmethod of estimating the bearing capacity and settlementcharacteristics Q-s of screw displacement piles andcolumns, based on soil resistance encountered during thedrilling to form piles/columns in the ground. The methodwas developed on the basis of correlation analyses of thetest results of 24 piles made during the “DPDT-Auger”research project (Krasiński et al., 2022a). In the proposedmethod,...
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"FEM Parametric Study on Ultimate Bearing Capacity of CFST Arch Bridge
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Evaluation of the Impact of Different Types of Uncoupling on the Processing Capacity of Hump Yards
PublikacjaThe paper considers the issue of evaluating the impact of different types of uncoupling to increase the processing capacity of hump yards to ensure high technical-economic indicators in the conditions of limited capital funds. Moreover it describes the mathematical formulation of the sorting slide. For the mathematical formulation, the sorting slide is taken as a surface that is uniquely projected onto a horizontal plane. Based...
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The concept of weighted mean friction angle in bearning capacity of footings of sands
PublikacjaZagadnienie średniej ważonej kąta tarcia wewnętrznego w nośności fundamentów posadowionych w gruntach niespoistych.
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Supplementation of garlic lowers lipids and increases antioxidant capacity in plasma of rats
PublikacjaZbadano bioaktywność surowego i gotowanego czosnku (Allium sativium L.). Stwierdzono, że gotowanie czosnku w temperaturze 100 °C przez 20 minut nie wpływa na jego bioaktywność.Samcom szczurów (z badanej populacji) podzielonym losowo na 10 grup, podawano żywność z różnym dodatkiem czosnku. Natomiast grupa kontrolna była karmiona dietą podstawową złożoną ze skrobi pszenicznej, oleju sojowego, celulozy, minerałów i mieszaniny witamin....
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Bearing capacity of working platform using distinct layout optimization method
PublikacjaBearing capacity of the working platforms from sandy soil resting on NC and OC clays was analyzed using LimitState GEO program. Different failure modes are considered using distinct layout optimization (DLO) method, which forms the upper bound solution of limit state analysis. Different mechanisms of failure were observed as a function of the platform thickness, angle of internal friction of the platform material and undrained...
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Antioxidant capacity and cholinesterase inhibiting properties of dietary infusions with Humulus lupulus
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Method of determining the degree of liquid aeration in a variable capacity displacement pump
PublikacjaThe Author concludes, that there is a possibility of determining a concrete value of the liquid aeration coefficient during the pump operation by finding such value of coefficient with which the increase of torque of mechanical losses is proportional to the indicated torque determined with a fixed value of increase of pressure in the pump working chambers. The fixed value of increase of pressure assumed in searching the liquid...
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Implementing Sustainable Development Goals with Digital Government – Aspiration-capacity gap
PublikacjaSustainable Development Goals (SDGs) represent a commitment by all United Nations Member States to pursue development efforts, including ending poverty and hunger, promoting well-being and education, reducing inequalities, fostering peace, and protecting the planet. Member States and their governments are supposed to take ownership of the SDGs, strengthen the implementation means, and improve public governance as both the means...
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Towards rainfall interception capacity estimation using ALS LiDAR data
PublikacjaIn this study we develop a spatial model for interception capacity of vegetation based on LiDAR data. The study is conducted in the natural wetland river valley dominated meadows, reeds and small bushes. The multiple regression model was chosen to relate the field measurements of interception capacity and LiDAR statistics at 2m grid. The optimal model was chosen by stepwise selection and further manual variables selection resulting...
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Experimental method to evaluate the load-carrying capacity of double corrugated sheet profiles
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Modification of ASM3 for the determination of biomass adsorption/storage capacity in bulking sludge control
PublikacjaSystemy osadu czynnego z selektorami (SAS) umożliwiają ograniczenie nadmiernego wzrostu bakterii nitkowatych, które odpowiadają za zjawisko zwanę ''puchnięciem osadu''. Celem tych badań było opracowanie modelu matematycznego opisującego szybkie usuwanie substratu w systemach SAS. W tym celu zmodyfikowano Model Osadu Czynnego nr 3 (ASM3) poprzez dodanie równań opisujących zjawiska adsorpcji i bezpośredniego wzrostu bakterii na zaadsorbowanym...
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Experimental measurements of artificial hip joint surfaces and applications for the preassure and capacity distributions
PublikacjaZe względu na wzrastającą potrzebę wszczepiania człowiekowi endoprotez stawu biodrowego, niniejsza praca przedstawia badania geometrycznej struktury ich powierzchni, które mają znaczący wpływ na proces smarowania, eksploatacji oraz funkcjonowanie narządów ruchu.
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Simulation Results of Dynamic Capacity Reallocation in Hierarchical Cell Structure of UMTS Network
PublikacjaIn the paper simulation results of dynamic capacity reallocation between different layers of hierarchical cell structure of UMTS network has been described. This approach for load management seems to be useful for improving the resource utilization perfmorance.
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Capacity-fairness performance of an ad hoc IEEE 802.11 WLAN with noncooperative stations
PublikacjaWykazano, że wartości kombinowanego wskaźnika wydajności lokalnej sieci bezprzewodowej ze stacjami niekooperacyjnymi, uwzględniającego przepustowość i sprawiedliwość rozdziału pasma, są znacznie niższe od przewidywanych na podstawie modeli działania kooperacyjnego. Sytuację może poprawić zastosowanie przez stacje inteligentnych strategii motywacyjnych pod warunkiem, że liczba stacji jest niewielka i są one wystarczająco uwarunkowane...
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Fertility Rate and Assessment of the Cytoprotective Capacity of Various Types of Holothuroidea Extracts on Spermatozoa
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Load capacity of steel-aluminium brackets under static and cyclic laboratory tests
PublikacjaThe aim of the research is the laboratory investigation of steel-aluminium brackets employed to fasten lightweight curtain walls to building facilities. Static pressure, suction forces, and cyclic loads parallel to end plates (horizontal – to simulate wind influence) were applied in the study. The steel-aluminium brackets were tested on a reinforced concrete substrate made of C30/37 concrete class to simulate the real working conditions....
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The Oxygen Transfer Capacity of Submerged Plant Elodea densa in Wastewater Constructed Wetlands
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Load carrying capacity of the eccentric joint in the truss made of open cross-sections
PublikacjaThe influence of eccentricity at intersections of truss members on the load carrying capacity of the truss joint is presented in the paper. The research truss elements were designed as cold-formed open cross section. Analytical calculations, numerical analysis and experimental research were conducted to reveal how the eccentricity affects the effort of material in the joint area. The results of analysis and investigations are compared...
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Capacity of Surface Production of Band Sawing in Manufacture of Oak Floor Upper Layers
PublikacjaThin lamellae, corresponding to the layer components of structural glued members, i.e., 2-ply or 3-ply glued flooring, can be manufactured in re-sawing operations of kiln-dried wood blocks or in wet technologies, which currently seem to be more common because of the shorter drying time. The re-sawing process in wet technology is conducted on dedicated thin-cutting band sawing machines with stellite-tipped band saws. The goal of...
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Analysis of sloping brace stiffness influence on stability and load bearing capacity of a truss
PublikacjaThe paper is focused on the numerical study of stability and load bearing capacity of a truss with side elastic braces. The structure is made in reality. The rotational and sliding brace stiffnesses were taken into account. Linear buckling analysis and non-linear static analysis with geometric and material nonlinearity were performed for the beam and shell model of the truss with respect to the angle of sloping braces. As a result...
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Parametrical Method for Determining Optimal Ship Carrying Capacity and Performance of Handling Equipment
PublikacjaThe paper presents a method of evaluating the optimal value of the cargo ships deadweight and the coupled optimal value of cargo handling capacity. The method may be useful at the stage of establishing the main owners requirements concerning the ship design parameters as well as for choosing a proper second hand ship for a given transportation task. The deadweight and the capacity are determined on the basis of a selected economic...
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Stability and load bearing capacity of a braced truss under upward wind loading
PublikacjaThe paper is focused on the numerical and experimental investigation of stability of a steel truss under upward wind loading. The structure was stiffened by elastic braces situated at the top and bottom chord. Usually the lateral (translational) brace stiffness is considered. However, the rotational stiffness of braces caused by interaction between torsional stiffness of the truss top chord and bending stiffness of the roof elements...
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Stability and load bearing capacity of a braced truss under upward wind loading
PublikacjaThe paper is focused on the numerical and experimental investigation of stability of a steel truss under upward wind loading. The structure was stiffened by elastic braces situated at the top and bottom chord. Usually the lateral (translational) brace stiffness is considered. However, the rotational stiffness of braces caused by interaction between torsional stiffness of the truss top chord and bending stiffness of the roof elements...
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A Comparison of ABTS and DPPH methods for assessing the total antioxidant capacity of human milk
PublikacjaCałkowitą zdolność przeciwutleniająca (TAC) mleka ludzkiego odzwierciedla zawartość i aktywność w mleku składników, które zapobiegają degradacji tłuszczów i białek na drodze utlenienia. Celem badania było porównuje testu ABTS i DPPH w odniesieniu do odzysku, precyzji i czułości (granica wykrywalności i oznaczalności) obu metod służących do oznaczania wartości TAC mleka ludzkiego. Wartości TAC zostały określone dla dwudziestu pięciu...
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Effect of soil moisture on current-carrying capacity of low-voltage power cables
PublikacjaOne of the factors affecting current-carrying capacity of underground power cables is the thermal resistivity of soil. Its value in the close proximity of the cable is the most important, and for this reason, in some cases, the local soil is replaced with an another soil type or with a cement-sand mixture. The thermal resistivity of the soil is strongly affected by moisture, and in the case of a cement-sand mixture – as tested...
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Modeling of bearing capacity of footings on sand within stochastic micro-polar hypoplasticity.
PublikacjaAnalizowano numerycznie efekt wstępnego rozkładu wskaźnika porowatości na wytrzymałość i strefy ścinania w problemach fundamentów na piasku w skali modelowej. Obliczenia wykonano przy zastosowaniu stochastycznej metody elementów skończonych i mikropolarnego modelu hipoplastycznego. Wskaźnik porowatości miał formę skorelowanych pól stochastycznych. Dodatkowo obliczono efekt skali dla 3 różnych szerokości fundamentów.
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Stability and bearing capacity of arch-shaped corrugated shell elements: experimental and numerical study
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Test-supported numerical analysis for evaluation of the load capacity of thin-walled corrugated profiles
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Enhancing Luminescence and X-ray Absorption Capacity of Eu3+:LaF3 Nanoparticles by Bi3+ Codoping
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Capacity efficient shared protection and fast restoration scheme in self-configured optical networks
PublikacjaW artykule zaproponowano nową koncepcję optymalizacji rozdziału zasobów dla przeżywalnych sieci rozległych, która gwarantuje szybkie odtwarzanie usług po wystąpieniu awarii. Wykazano, iż proponowany algorytm, wykorzystujący ideę wierzchołkowego kolorowania grafów, nie powoduje wydłużania ścieżek zabezpieczających - zjawiska charakterystycznego dla powszechnie stosowanych algorytmów optymalizacji. Udowodniono, iż powyższa cecha...
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Specific risks for local stability and capacity of verticat doble - shell cylindrical steel tanks
PublikacjaOmówiono zagrożenia stateczności i nosności płaszczy zbiorników dwupłaszczowych wywołane przez: niefachowo prowadzoną próbę wodną, dużną różnicę temperatury podczas eksploatacji oraz nierównomierne osiadanie. W księdze konferncyjnej opublikowano dwustronicowe streszczenie referatów a na załączonej płycie referaty zamieszczone są w całości. Liczby podane w nawiasach dotyczą ilości rysunków fotografii na płycie , liczby bez nawiasów...
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Pd nanoparticles with tunable diameter deposited on carbon nanotubes with enhanced hydrogen storage capacity
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Microwave-assisted preparation of Li3V2(PO4)3/C composite with high-rate capacity
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Determination of phytochemical composition and antioxidant capacity of 22 old apple cultivars grown in Poland
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Torque capacity of multidisc wet clutch with reference to friction occurrence on its spline connections
PublikacjaIn this article developed mathematical model that includes friction occurrence on spline connections is presented. The work also contains results of experimental research on torque capacity of multidisc wet clutch. These results are expressed as a function of contact pressure for different number of friction surfaces. Due to increased interest in research concerning multidisc wet clutches it is essential to determine impact of...
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The influence of reinforcement on load carrying capacity and cracking of the reinforced concrete deep beam joint
PublikacjaThe paper presents the results of experimental research of the spatial reinforced concrete deep beam systems orthogonally reinforced and with additional inclined bars. Joint of the deep beams in this research was composed of the longitudinal deep beam with a cantilever suspended at the transversal deep beam. The cantilever deep beam was loaded throughout the depth and the transversal deep beam was loaded at the mid-span by longitudinal...
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Influence of local bush wear on water lubricated sliding bearing load carrying capacity
PublikacjaOne of main problems concerning water-lubricated bearings is their durability. There are known cases of bearings with life time measured in decades, and some, whose refurbishment was necessary just days after start-up. Obtaining stable fluid film friction plays key role in the durability of these bearings. Unfortunately, their load-carrying capacity is limited due to water's low-viscosity. The conducted experimental...
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Impact of thermal backfill parameters on current-carrying capacity of power cables installed in the ground
PublikacjaProper design of power installations with the participation of power cables buried in homogeneous and thermally well-conductive ground does not constitute a major problem. The situation changes when the ground is non-homogeneous and thermally low-conductive. In such a situation, a thermal backfill near the cables is commonly used. The optimization of thermal backfill parameters to achieve the highest possible current-carrying capacity...
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Analysis of antioxidant capacity and polyphenol content of Goji fruit products available on the European market
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Specific risks for local stability and capacity of verticat doble - shell cylindrical steel tanks
PublikacjaOmówiono zagrożenia stateczności i nosności płaszczy zbiorników dwupłaszczowych wywołane przez: niefachowo prowadzoną próbę wodną, dużną różnicę temperatury podczas eksploatacji oraz nierównomierne osiadanie. W księdze konferncyjnej opublikowano dwustronicowe streszczenie referatów a na załączonej płycie referaty zamieszczone są w całości.
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STABILITY AND LOAD BEARING CAPACITY OF A BARS WITH BUILT UP CROSS SECTION AND ELASTIC SUPPORTS
PublikacjaThe present paper is devoted to the numerical analysis and experimental tests of compressed bars with built–up cross section which are commonly used as a top chord of the roof trusses. The significant impact on carrying capacity for that kind of elements in case of out-of-plane buckling is appropriate choice of battens which are used to provide interaction between separate members. Linear buckling analysis results and nonlinear static...
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ANALYSIS OF THE LOAD-CARRYING CAPACITY OF A HYDRODYNAMIC WATER-LUBRICATED BEARING IN A HYDROELECTRIC POwER PLANT
PublikacjaThe paper presents an analysis of the load-carrying capacity of a historic hydrodynamic water-lubricated radial bearing of an unconventional segment design installed in the Braniewo Hydroelectric Power Plant. The aim of the calculations was to determine whether the bearing operates in the conditions of hydrodynamic or mixed lubrication, as well as to establish the optimal geometry of the axial grooves allowing for the highest load-carrying...
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Distributed Inter-Domain Link Capacity Optimization for Inter-Domain IP/MPLS Routing
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