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Preparation and characterization of biodegradable and compostable PLA/TPS/ESO compositions
PublikacjaIn this study, biodegradable and compostable compositions, derived from totally natural feedstock/raw materials, namely polylactide (PLA), potato thermoplastic starch (TPS) and plant glycerin have been made by melt extrusion with epoxydized soybean oil (ESO) as reactive modifier in order to improve PLAs ductility and reduce the products cost without compromising biodegradation. The obtained PLA/mTPS(0,5ESO)[75/25] and PLA/ mTPS(2ESO)[75/25]...
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Ionic liquids in the microextraction techniques: the influence of ILs structure and properties
PublikacjaIonic liquids (ILs) are composed entirely of ions thus they possess unique properties, including negligible volatility, a liquid state in a broad range of temperatures and ability to change them depending on the chosen type of anion and cation, which make ILs unique and useful for many applications in sample preparation techniques. A deeper understanding of the nature of ILs and the impact of their structure on their parameters...
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The LS-index: A Survey
PublikacjaNiniejszy przegląd jest oparty na wykładach autora wygłoszonych na NATO-ASI-SMS w 2004 roku na University of Montreal w Kanadzie.Niech H będzie przestrzenią Hilberta. Rozważmy pole wektorowe f zdefiniowane na H postaci f(x)=L(x)+K(x), gdzie L jest silnie nieokreślonym, ograniczonym operatorem liniowym, a K jego pełnociągłym zaburzeniem. W tej pracy prezentujemy rozszerzenie klasycznego indeksu Conley'a na potoki generowane przez...
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Infrastruktura PL-LAB2020
PublikacjaPrzedstawiono infrastrukturę sieci badawczej PL-LAB2020. Zaprezentowano 7 laboratoriów badawczych PL-LAB umożliwiających prowadzenie badań w głównych ich obszarach zdefiniowanych dla programu Horyzont 2020. Przedstawiono szczegóły struktury operacyjnej PL-LAB2020 łączącej zasoby poszczególnych laboratoriów zlokalizowane w 6 ośrodkach naukowo-badawczych w jedno rozproszone środowisko badawcze. Ostatecznie pokazano, jak infrastruktura...
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FPGA realization of an improved alpha max plus beta min algorithm
PublikacjaThe generalized improved version of the alpha max plus beta min square-rooting algorithm and its realization in the Field Programmable Gate Array (FPGA) are presented. The algorithm computes the square root to calculate the approximate magnitude of a complex sample. It is especially useful for pipelined calculations in the DSP. In case of four approximation regions it is possible to reduce the peak error form 3.95% to 0.33%. This...
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Property revenues (PRs) and expenditures of local government units (LGUs) in Poland
PublikacjaPRs are new category of local government revenues, which was introduced by changing the law on public finances at the end of 2006 and which took effect in 2007. By principle, these revenues should be converted into property expenditures. Their formalisation did not only allow assessing their absolute size but also a comparison with the longer existing property expenditures. Both categories were subject of analysis in this article....
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Push-to-talk als eine der ersten voip - applikationen in mobilfunknetzen
PublikacjaW pracy przedstawiono wybrane aspekty realizacji multimediów w sieciach komórkowych. Dokonano analizy protokołu SIP ze szczególnym uwzględnieniem pomiarów systemów rzeczywistych. Oceniono nową usługę PoC (Push-to-Talk over Cellular)- pierwszą aplikację typu VoIP realizowaną w sieciach komórkowych
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Realizacja układu SZR na bazie sterownika PLC WAGO PFC200
PublikacjaArtykuł opisuje projekt i wykonanie układuSamoczynnego Załączania Rezerwy (SZR), który został zrealizowany z wykorzystaniem sterownika PLC WAGO PFC200 i jest wdrażany w systemie stacji elektroenergetycznej Laboratorium LINTE^2 na Politechnice Gdańskiej.
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Low-Level Aerial Photogrammetry as a Source of Supplementary Data for ALS Measurements
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Critical approach to PLE technique application in the analysis of secondary metabolites in plants
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Emotionalisierung und wertende Prägung als immanente Bestandteile der Sportberichterstattung
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Simulation Model of IMS/NGN with Transport Stratum Based on MPLS Technology
PublikacjaIn the paper we continue our research on traffic modelling in the Next Generation Network (NGN) architecture, which includes the IP Multimedia Subsystem (IMS) elements. A simulation model of a single NGN domain with transport stratum based on the Multiprotocol Label Switching (MPLS) technology is proposed, which allows evaluation of mean response time of this stratum. The simulation model is applied to verify the results obtained...
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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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Low-Level Aerial Photogrammetry as a Source of Supplementary Data for ALS Measurements
PublikacjaThe development of laser scanning technology ALS allows to make high-resolution measurements for large areas result-ing in significant reduction of costs. The main stakeholders at heights data received from the airborne laser scanning is mainly state administration. The state institutions appear among projects such as ISOK. Each point is classified in ac-cordance with the standard LAS 1.2, our research focuses on the class 6 -...
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In-plane shear nonlinearity in failure behavior of angle-ply laminated shells
PublikacjaThe paper concerns the progressive failure analysis of laminates with the in-plane shear nonlinearity accounted for.The nonlinear shear response of the layer is described by the constitutive relation treating the stresses as a function of strains. Thus it can be easily incorporated into the displacement-based FEM codes. The brittle failure mechanisms of the fibers and the matrix of the layer are recognized with the use of the Hashin...
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Polyurethane porous scaffolds (PPS) for soft tissue regenerative medicine applications
PublikacjaTissue engineering requires suitable polymeric scaffolds, which act as a physical support for regenerated tissue. A promising candidate might be polyurethane (PUR) scaffold, due to the ease of the PUR properties design, which can be adjusted directly to the intended purpose. In this study, we report a successful fabrication of porous polyurethane scaffolds (PPS) using solvent casting/particulate leaching technique combined with...
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Subjective Quality Evaluation of Underground BPL-PLC Voice Communication System
PublikacjaDesigning a reliable voice transmission system is not a trivial task. Wired media, thanks to their resistance to mechanical damage, seem an ideal solution. The BPL-PLC (Broadband over Power Line – Power Line Communication) cable is resilient to electricity stoppage and partial damage of phase conductors. It maintains continuity of transmission in case of an emergency situation, including paramedic rescue operations. These features...
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Subjective and Objective Quality Evaluation Study of BPL -PLC Wired Medium
PublikacjaThis paper presents results of research on the effectiveness of bi-directional voice transmission in a 6 kV mine cable network using BPL-PLC (Broadband over Power Line - Power Line Communication) technology. It concerns both emergency cable state (supply outage with cable shorted at both ends) and loaded with distorted current waveforms. The narrowband (0.5 MHz–15 MHz) and broadband (two different modes, frequency range of 3 MHz–7.5...
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Analiza posadowienia budynków PLL LOT i PPPL w Warszawie.
PublikacjaPrzedstawiono analizę posadowienia dwóch dużych budynków z podziemnymi kondygnacjami garażowymi. W wyniku wykonanych analiz oba budynki posadowiono na płycie zamiast proponowanych we wcześniejszych projektach fundamentach palowych.
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Wielozadaniowy sterownik PLC do zautomatyzowanych napędów - stanowisko badawczo-szkoleniowe.
PublikacjaPrzedstawiono nowe stanowisko badawczo-szkoleniowe przeznaczone do testów cykli ruchów realizowanych przez zautomatyzowane napędy prądu przemiennego. Możliwe jest testowanie oprogramowania PLC do zdalnego sterowania napędami a także doświadczalna weryfikacja oddziaływania parametrów nastawnych na właściwości napędu.
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Projektowanie posadowienia budynków PLL LOT i PPPL w Warszawie
PublikacjaAnaliza posadowienia oraz obliczenia sił wewnętrznych w fundamentach dwóch dużych budynków z podziemnymi kondygnacjami garażowymi. W wyniku wykonanych analiz oba budynki posadowiono na płycie zamiast proponowanych we wcześniejszych projektach fundamentach palowych.
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Traffic Model of IMS/NGN Architecture with Transport Stratum Based on MPLS Technology
PublikacjaGrowing expectations for a fast access to information create strong demands for a universal telecommunication network architecture, which provides various services with strictly determined quality. Currently it is assumed that these requirements will be satisfied by Next Generation Network (NGN), which consists of two stratums and includes IP Multimedia Subsystem (IMS) elements. To guarantee Quality of Service (QoS) all NGN stratums...
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Realizacja programowa algorytmów filtracji, estymacji i sterowania w PLC/PAC
PublikacjaSterowniki programowalne PLC (ang. Programmable Logic Controller) są główną przemysłową platformą implementacji algorytmów sterowania bezpośredniego. Standardowo producenci PLC dostarczają programistom jedynie podstawowe, najprostsze metody sterowania. Wraz z rozwojem sterowników PLC oraz ich następców PAC (ang. Programmable Automation Controller) pojawiły się zwiększone możliwości obliczeniowe i pamięciowe tych urządzeń oraz...
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Mechanical Properties of Additively Manufactured Polymeric Materials—PLA and PETG—For Biomechanical Applications
PublikacjaThe study presented herein concerns the mechanical properties of two common polymers for potential biomedical applications, PLA and PETG, processed through fused filament fabrication (FFF)—Material Extrusion (ME). For the uniaxial tension tests carried out, two printing orientations—XY (Horizontal, H) and YZ (Vertical, V)—were considered according to the general principles for part positioning, coordinates, and orientation typically...
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Noninvasive glucose sensing in scattering media using OCT, PAS, and TOF techniques.
PublikacjaW pracy przedstawiono możliwości wykorzystania optycznej tomografii koherencyjnej (OCT), spektroskopii fotoakustycznej (PAS)i spektroskopii czasu przelotu (TOF) w pomiarach glukozy w ośrodku silnie rozpraszającym. Równolegle opracowano modele propagacji światła w tych ośrodkach wykorzystując metodę Monte Carlo. W pomiarach wykorzystano ''Intralipid'' jako fantom tkanki. W dalszych badaniach wykorzystano mięso wieprzowe i dokonano...
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Application of PLE for the determination of essential oil components from Thymus vulgaris L.
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Porowate nanostruktury anatazu wytwarzane z Ti oraz TiO2 metodą PLD
PublikacjaNiniejsza praca dotyczy wytwarzania cienkich warstw dwutlenku tytanu metodą PLD. Za pomocą technik spektroskopowych zbadany został wpływ wartości ciśnienia gazu osłonowego na otrzymywane struktury krystaliczne w warstwach. Obserwowano także zależność uzyskanych faz krystalicznych od rodzaju odparowywanego materiału.
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Analysis of distance measurement errors in CW FM sonar with MLS code modulation
PublikacjaAlthough used in the classic silent sonar, the CW FM sounding signal has a major flaw which is its inaccuracy in determining the distance to a target. The authors of the article have developed a concept of silent sonar using frequency modulation signals switched by pseudorandom codes, already discussed in their previous work. This article presents a detailed analysis of errors in CW FM sonar with pseudo-random sequence code modulation...
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On trees with double domination number equal to 2-domination number plus one
PublikacjaA vertex of a graph is said to dominate itself and all of its neighbors. A subset D subseteq V(G) is a 2-dominating set of G if every vertex of V(G)D is dominated by at least two vertices of D, while it is a double dominating set of G if every vertex of G is dominated by at least two vertices of D. The 2-domination (double domination, respectively) number of a graph G is the minimum cardinality of a 2-dominating (double dominating,...
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On trees with double domination number equal to total domination number plus one
PublikacjaA total dominating set of a graph G is a set D of vertices of G such that every vertex of G has a neighbor in D. A vertex of a graph is said to dominate itself and all of its neighbors. A double dominating set of a graph G is a set D of vertices of G such that every vertex of G is dominated by at least two vertices of D. The total (double, respectively) domination number of a graph G is the minimum cardinality of a total (double,...
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Sterownik PLC jako urządzenie IED zgodne ze standardem IEC 61850
PublikacjaWraz z rozwojem elektroenergetyki, w stacjach i sieciach elektroenerge- tycznych instalowanych jest coraz więcej cyfrowych urządzeń i układów realizujących złożone funkcje sterowni- cze, nadzorujące i zabezpieczeniowe [1] [2]. Obecnie, większość z tych urządzeń standardowo umożliwia również zdal- ne sterowanie, monitoring i akwizycję danych, wykorzystując jeden z wielu protokołów opracowanych dla prze- mysłowych...
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Application of Diversity Combining with RLS Adaptive Filtering in Data Transmission in a Hydroacoustic Channel
PublikacjaWhen transmitting data in a hydroacoustic channel under difficult propagation conditions, one of the problems is intersymbol interference (ISI) caused mainly by the effect of multipath propagation. This phenomenon leads to a decrease in transmission parameters, and sometimes completely prevents it. Therefore, we have made an attempt to use diversity combining with Recursive Least Squares (RLS) adaptive filtering to improve the...
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Thermal degradation of polylactic acid (PLA)/polyhydroxybutyrate (PHB) blends: A systematic review
PublikacjaPolylactic acid (PLA) and polyhydroxybutyrate (PHB) are two biopolyesters obtained from renewable resources like corn or sugar under bacterial fermentation. PLA is the most widely used biopolymer in diverse applications. Addition of PHB to PLA can improves the crystallinity of PLA, and thereby its mechanical strength. However, both PLA and PHB suffer from poor thermal stability, which limits their potential industrial application....
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Reactions of Lithium Salts of Triphosphanes tBu2P-PLi-PtBu2 and tBu2P-PLi-P(NEt2)2 with Metal Complexes [(R3P)2MCl2] (M = Ni, Pd, Pt, R3P = Et3P, pTol3P, Ph2EtP, iPr3P)
PublikacjatBu2P-PLi-PtBu2·2THF reacts with [(R3P)2MCl2] (M = Pt, Pd, Ni; R3P = Et3P, pTol3P, Ph2EtP, iPr3P) to yield isomers of [(1,2-η-tBu2P=P-PtBu2)M(PR3)Cl], in which the tBu2P-P-PtBu2 ligand adopts the arrangement of a side-on bonded 1,1-di-tert-butyl-2-(di-tert-butylphosphanyl)diphosphenium cation. tBu2P-PLi-P(NEt2)2·2THF reacts with [(R3P)2MCl2] but does not form complexes with a tBu2P-P-P(NEt2)2 moiety, however, splitting...
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GIS estimated potential of rooftop PVs in urban areas - case study Wrocław (Poland)
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Distributed Inter-Domain Link Capacity Optimization for Inter-Domain IP/MPLS Routing
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Comparison of IP-based and explicit paths for one-to-one fast reroute in MPLS networks
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Subjective Quality Evaluation of Speech Signals Transmitted via BPL-PLC Wired System
PublikacjaThe broadband over power line – power line communication (BPL-PLC) cable is resistant to electricity stoppage and partial damage of phase conductors. It maintains continuity of transmission in case of an emergency. These features make it an ideal solution for delivering data, e.g. in an underground mine environment, especially clear and easily understandable voice messages. This paper describes a subjective quality evaluation of...
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The ILs-assisted electrochemical synthesis of TiO2 nanotubes: The effect of ionic liquids on morphology and photoactivity
PublikacjaFacile and environmentally benign one-step titanium anodization method for TiO2 nanotubes (NTs) formation in a presence of ionic liquids (ILs) was proposed. Influence of the IL structure and its content in ethylene glycol electrolyte on morphology, surface properties and photoactivity of the TiO2 NTs was investigated. Possible interactions between IL and TiO2 NTs as well as the mechanism of NTs formation during anodic oxidation...
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Analysis of Video Transmission Capabilities in a Simulated OFDM-Based Supplementary BPL-PLC System
PublikacjaThe design and maintenance of a reliable communication system, especially in harsh working conditions for the oil and mining industry, brings many challenges. With the use of a video transmission system, one can monitor the crew and their working environment. Broadband over power line–power line communication (BPL-PLC) seems an ideal medium for such a service, since it enables the use of the existing wired infrastructure for supplementary...
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A Pilot Study on Machining Difficult-to-Cut Materials with the Use of Tools Fabricated by SLS Technology
PublikacjaThe growing use of contemporary materials in various industrial sectors, such as aerospace, automotive, as well as the oil and gas industry, requires appropriate machining methods and tools. Currently, apart from the necessity to obtain high-dimensional and shape accuracy, the efficiency and economic aspects of the selected manufacturing process are equally important, especially when difficult-to-cut materials, such as hard and...
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Implementation of the FOPID Algorithm in the PLC Controller - PWR Thermal Power Control Case Study
PublikacjaIn the paper authors describe proposition of design and verification procedures of the discrete Fractional Order PID (FOPID) algorithm for control of the Pressurized Water Reactor (PWR) thermal power near its nominal operating point. The FOPID algorithm synthesis consists of: off-line optimal tunning of its parameters in continuous time-domain with LQ (Linear Quadratic) performance index and simplified models of nuclear reactor...
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Tensile failure study of 3D printed PLA using DIC technique and FEM analysis
PublikacjaThe paper presents the experimental and numerical study of the failure behaviour of Fused Filament Fabricated (FFF) Polylactic Acid (PLA) samples subjected to tensile load. The examined samples are printed in flat orientation with 0◦, 45◦ and 90◦ raster angles. During the experiments the deformation of the specimens is continuously scanned with the 3D Aramis measuring system utilizing the digital imaging correlation technique,...
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The cohomological span of LS-Conley index
PublikacjaIn this paper we introduce a new homotopy invariant – the cohomological span of LS-Conley index. We prove the theorems on the existence of critical points for a class of strongly indefinite functionals with the gradient of the form Lx+K(x), where L is bounded linear and K is completely continuous. We give examples of Hamiltonian systems for which our methods give better results than the Morse inequalities. We also give a formula...
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Preparation and Characterization of an Electrospun PLA-Cyclodextrins Composite for Simultaneous High-Efficiency PM and VOC Removal
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Double-Layer Agar (DLA) Modifications for the First Step of the Phage-Antibiotic Synergy (PAS) Identification
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Flame retardant effect and mechanism of nanosized NiO as synergist in PLA/APP/CSi-MCA composites
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Optimized IP-based vs. explicit paths for one-to-one backup in MPLS fast reroute
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Attempt to a Video-Transmission Capability in MV Mine Cable Network Using BPL-PLC Technology
PublikacjaThis article presents and discusses the attempt to transmit video content using the BPL-PLC (Broadband over Power Line - Power Line Communication) technology. It includes simulation results of a specially developed digital transmitter and receiver, dedicated to a given predefined 6 kV mining power cable. The effect of two different transmission modes (2-7 MHz and 3-7.5 MHz) and two types of coupling (capacitive-inductive and induction-inductive),...
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A novel genetic approach to provide differentiated levels of service resilience in IP-MPLS/WDM networks
PublikacjaThis paper introduces a novel class-based method of survivable routing for connection-oriented IP-MPLS/WDM networks, called MLS-GEN-H. The algorithm is designed to provide differentiated levels of service survivability in order to respond to varying requirements of end-users. It divides the complex problem of survivable routing in IP-MPLS/WDM networks into two subproblems, one for each network layer, which enables finding the...