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Search results for: WOOD COLOR CHANGES
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ASSESSMENT OF WEAR OF THE BANDSAW TEETH IN INDUSTRIAL CONDITIONS
PublicationA methodology for measuring bandsaw tooth wear is presented in this paper. This type of measurement is proposed as an alternative way of determining tooth wear in industrial conditions. The method is based on determining the KE value, i.e., the distance of the radius of the rounded cutting edge of the tooth and the intersection of the surface of the back and the surface of the face of the cutting wedge of the bandsaw tooth....
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OVERALL SET OF BANDSAW TEETH VERSUS METHODS OF MEASUREMENTS
PublicationThis article deals with the impact of the manual methods of measurement on the overall set measurement results. It describes the results of the measurement of bandsaw teeth kerf with the use of a micrometer and a digital calliper. It is commonly known that the cutting process causes the wear of cutting tools. The wear of the cutting edge depends on the cutting conditions as well as on the mechanical properties of the processed...
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Portico Farmhouses of the Vistula Delta: Architecture, Current State and Finite Element Modelling of Timber Roof Truss under Material and Cross-section Uncertainty
PublicationThe article focuses on the oldest surviving I-type portico houses located in the Vistula Delta, which were built in the 17th and 18th centuries. The study describes the houses’ origins, structure, details of roof structures and technical condition, and it also includes numerical modelling of a roof truss and its mechanical analysis. Numerical models of the roof trusses are defined and analysed by means of the finite element method....
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Numerical analysis of chip removing system operation in circular sawing machine using CFD software
PublicationPaper presents the analysis of the results of numerical simulations of the air flow process of wood chips removing system in the circular sawing machine. The attention is focused on the upper cover and bottom shelter of the chip removing system. Within the framework of the work a systematic numerical modeling of the air flow distribution in the cover and shelter during operation of the selected rotational speed of saw blade with...
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GP s3 2022/23 Projektowanie urbanistyczne
e-Learning CoursesGOSPODARKA PRZESTRZENNA s. 3 PROJEKTOWANIE URBANISTYCZNE Przedmiot projektowy dla studentów 3 semestrustudiów na kierunku Gospodarka Przestrzenna WA PG. Zajęcia odbywają się stacjonarnie, kurs założony w celu udostępniania materiałów i archiwizacji projektów semestralnych.
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Pial artery and subarachnoid width response to apnoea in normal humans
PublicationBackground: Little is known about intracranial pressure (ICP)-cerebral haemodynamic interplay during repetitive apnoea. A recently developed method based on near-infrared transillumination/backscattering sounding (NIR-T/BSS) noninvasively measures changes in pial artery pulsation (cc-TQ) as well as subarachnoid width (sas-TQ) in humans. Method: We tested the complex response of the pial artery and subarachnoid width to apnoea...
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WILiŚ - IS gr. 1 i 2 - Matematyka II sem.2 2021/2022 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Matematyka II" przeznaczony dla studentów Wydziału Inżynierii Lądowej i Środowiska specjalności Inżynieria sanitarna (grupy dziekańske 1 i 2) w roku akademickim 2021/2022 (semestr letni).
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WILiŚ - IS gr. 1 i 2 - Matematyka II sem.2 2022/2023 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Matematyka II" przeznaczony dla studentów Wydziału Inżynierii Lądowej i Środowiska specjalności Inżynieria sanitarna (grupy dziekańske 1 i 2) w roku akademickim 2022/2023 (semestr letni).
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WILiŚ - IS gr. 2 i 3 - Matematyka II sem.2 2023/2024 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Matematyka II" przeznaczony dla studentów Wydziału Inżynierii Lądowej i Środowiska specjalności Inżynieria sanitarna (grupy dziekańske 2 i 3) w roku akademickim 2023/2024 (semestr letni).
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Selected issues of women's participation in labour market and on boards of family entreprises
PublicationThe chapter presents cultural determinants of roles attributed to women, as well as their situation in the labour market and in family businesses. The main aim of the study is to trace the changes in the social image of women’s roles in the labour market. The observations made are based on the changes in the value of the economic activity rate among women in the Baltic Sea Region (BSR) countries, as well as on the feminisation...
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THE INFLUENCE OF PET MECHANICAL PROPERTIES ON SBM PROCESS PARAMETERS – LITERATURE REVIEW
PublicationIn the paper it is said about the influence of PET (polyethylene terephthalate) mechanical properties on SBM (stretch blow molding) process output parameters changes. The below paper mentions also about the influence of PET orientation and crystallization processes on mechanical and thermal properties of PET material during SBM process. All mechanical data of PET material and SBM process output parameters changes are from collected...
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A method of nonlinearities of transformer no-load characteristic modelling
PublicationA way in which changes of the no-load characteristic are taken into account in the mathematical model of the transformer is presented. Changes of saturation within core of transformer are presented as a combined non-linear flux curve. Analysis of magnetization of the transformer core and simulation of no-load state for distribution transformer of 30 kVA power rating and 15.75/0.4 kV/kV (especially supplying VLV) transformation...
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Analiza danych (zima 2022/23)
e-Learning CoursesAnaliza danych - dr inż. Karol Flisikowski. AG II (2022/23)
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Analiza danych AI 2024
e-Learning CoursesStatystyczna Analiza Danych - dr inż. Karol Flisikowski, prof. PG
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The role of epigenetics in regeneration
PublicationComplex changes in chromatin structure and at the transcriptional level occur from the creation of a single parental gamete throughout fertilization, embryo development and the life of an adult organism. Epigenetic changes, such as methylation and hydroxymethylation of DNA or histone methylation and acetylation, are an important part of these processes. Epigenetic regulation has an essential influence on gene expression level. DNA...
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Dynamic impedance measurements of the Direct Methanol Fuel Cell cathode at various operating temperatures
PublicationThis article discusses the application of impedance analysis for diagnosing the cathode of a direct methanol fuel cell at various operating temperatures. The Dynamic Electrochemical Impedance Spectroscopy technique coupled with a linear current scan was applied for this purpose. This technique allowed the observation of changes in the cathode's properties in the fuel cell operating under real working conditions. An equivalent model...
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Eqiuitable coloring of corona products of cubic graphs is harder than ordinary coloring
PublicationA graph is equitably k-colorable if its vertices can be partitioned into k independent sets in such a way that the number of vertices in any two sets differ by at most one. The smallest k for which such a coloring exists is known as the equitable chromatic number of G. In this paper the problem of determinig the equitable coloring number for coronas of cubic graphs is studied. Although the problem of ordinary coloring of coronas...
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SSE PLATFORM APPLICATION TO EXTEND OPERATIONABILITY OF WEB-GIS BASED MARINE SERVICES OF AN HRPT-METOP SATELLITE GROUND STATION
PublicationEarth Observation (EO) products are widely used by geospatial society. Over the last years a number of new applications of satellite imagery were proposed. This led to an increased interest in EO products, not only from researchers but also from companies and individuals. The authors constitute the essential part of the team that created the marine, web-GIS system - SafeCity GIS - for dissemination of data obtained from a 1.5 metre...
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METHOD TO EXTEND OPERATIONABILITY OF WEB-GIS BASED MARINE SERVICES USING SSE PLATFORM
PublicationEarth Observation (EO) products are widely used by geospatial society. Over the last years a number of new applications of satellite imagery were proposed. This led to an increased interest in EO products, not only from researchers but also from companies and individuals. The authors constitute the essential part of the team that created the marine, web-GIS system - SafeCity GIS - for dissemination of data obtained from a 1.5...
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On some Zarankiewicz numbers and bipartite Ramsey Numbers for Quadrilateral
PublicationThe Zarankiewicz number z ( m, n ; s, t ) is the maximum number of edges in a subgraph of K m,n that does not contain K s,t as a subgraph. The bipartite Ramsey number b ( n 1 , · · · , n k ) is the least positive integer b such that any coloring of the edges of K b,b with k colors will result in a monochromatic copy of K n i ,n i in the i -th color, for some i , 1 ≤ i ≤ k . If n i = m for all i , then we denote this number by b k ( m )....
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Application of ferric chloride for arsenic removal in the integrated process: coagulation/microfiltration
PublicationThe study presents results of using iron coagulation integrated with microfiltration to remove arsenic from water. Tested samples of natural groundwater contained approximately 32 μg/L of arsenic, 0.13 mg/L of iron and 0.085 mg/L of manganese. As a coagulant the aqueous solution of ferric chloride was dosed in portions from 1.0 to 10.5 mg/L. In the research microfiltration membranes with 400 kDa MWCO were used. Tests indicated...
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Inwestycje w surowce w połączeniu z polskim rynkiem kapitałowym, analiza ryzyka i efektywności
PublicationW artykule przedstawiono główne kategorie i rodzaje inwestycji w surowce. Cel opracowania to zbadanie czy inwestycja w Warszawski Indeks Giełdowy stanowi główny składnik optymalnego tj. cechującego się minimalnym ryzykiem portfela inwestycyjnego. Ponadto ustalono czy wspomniana inwestycja tradycyjna stanowi najważniejszy element portfela inwestycyjnego odznaczającego się najwyższą efektywnością. Stwierdzono, że wszystkie z 29 analizowanych...
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Bidirectional voting and continous voting concepts as possible use of Internet in democratic voting process
PublicationDemocracies need elections for choosing their authorities and governments.This process has many factors that shape today's procedures. However, the Internet is a medium that may change possibilities and elections. The main issue is concern on how changes may influence the whole democratic process. this paper shows two possible ideas - that of bidirectional voting and continous voting., and considers possible reasons for introducing...
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Variability in the distribution of phytoplankton as affected by changes to the main physical parameters in the Baltic Sea**The study was financially supported by the Polish State Committee of Scientific Research (grants: No. N N305 111636, N N306 353239) and ECOOP IP WP 10.1.3 Project. Partial support for this study was also provided by the Satellite Monitoring of the Baltic Sea Environment – SatBatłyk project founded by the European Union through European Regional Development Fund contract No. POIG 01.01.02-22-011/09.
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Informacje o przedmiotach i specjalnościach do wyboru // Information about elective subjects and specialties
e-Learning CoursesInformacje o przedmiotach/specjalnościach do wyboru 2023/2024 - semestr letni 2023/2024 Information about elective subjects/specialties - summer semester 2023/2024
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WEiA - Et gr. 3 - Matematyka II 2023/2024 (J.Woroń)
e-Learning CoursesKurs z ćwiczeń do przedmiotu "Matematyka II" przeznaczony dla studentów Wydziału Elektrotechniki i Automatyki na kierunku Elektrotechnika (grupa dziekańska 3) w roku akademickim 2023/2024 (semestr letni).
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Study on Combined Optical and Electrochemical Analysis Using Indium-tin-oxide-coated Optical Fiber Sensor
PublicationThe growing needs for fast and reliable sensing devices stimulate development of new technological solutions. In this work a new multi-domain sensing method is demonstrated where optical sensing device has been applied to enhance amount of data received during electrochemical analysis. Thin, optically transparent, high-refractive-index, and electrically conductive indium tin oxide (ITO) film was deposited using magnetron sputtering...
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Optical investigations of electrochemical processes using a long-period fiber grating functionalized by indium tin oxide
Publicationhe growing needs for fast and reliable sensing devices stimulate development of new technological solutions. In this work a new multi-domain sensing method is demonstrated where optical sensing device has been applied to enhance amount of data received during electrochemical analysis. Thin, optically transparent, high-refractive-index, and electrically conductive indium tin oxide (ITO) film was deposited using magnetron sputtering...
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Zarządzanie w budownictwie - sem. letni rok akademicki 2022/2023
e-Learning CoursesOsoba odpowiedzialna za przedmiot i realizację zajęć wykładowych, projektowych i ćwiczeniowych - dr inż. Beata Grzyl, prof. uczelni; beata.grzyl@pg.edu.pl Osoba odpowiedzialna za realizację zajęć wykładowych - dr inż. Wojciech Migda; wojciech.migda@pg.edu.pl Osoba odpowiedzialna za realizację zajęć wykładowych, projektowych i ćwiczeniowych - dr inż. Anna Jakubczyk-Gałczyńska; annjakub@pg.edu.pl Osoba odpowiedzialna za realizację...
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Zarządzanie w budownictwie - sem. letni, rok akademicki 2023/2024 (studia niestacjonarne)
e-Learning CoursesOsoba odpowiedzialna za przedmiot i realizację zajęć wykładowych, projektowych i ćwiczeniowych - dr inż. Beata Grzyl, prof. uczelni; beata.grzyl@pg.edu.pl Osoba odpowiedzialna za realizację zajęć wykładowych - dr inż. Wojciech Migda; wojciech.migda@pg.edu.pl Osoba odpowiedzialna za realizację zajęć wykładowych, projektowych i ćwiczeniowych - dr inż. Anna Jakubczyk-Gałczyńska; annjakub@pg.edu.pl Osoba odpowiedzialna za realizację...
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Burialscapes of Rab Island (North East Adriatic): The Role of Sepulchral Evidence in the Reconstruction of Roman and Late Antique Rural Settlement Pattern
PublicationOn the bases of archaeological and documentary data an overview of the burial evidence of Roman and late Antique date on the island of Rab (North East Adriatic, Croatia) is brought forth, spatially analysed and interpreted within the so-far defined rural settlement pattern. While aiding in the definition of burial practices and their diachronic changes, data derived from such evidence and interpreted from a social perspective,...
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Analiza danych 2023/24
e-Learning CoursesAnaliza danych - dr inż. Karol Flisikowski, prof. PGAG II (2023/24)
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Profile irregularities of turned surfaces as a result of machine tool interactions
PublicationThe paper describes the influence of the machining operation on a surface, which disturbs the projection of the tool profile in the form of its relative movements with respect to the object. The elements of the machine tool undergo constant wear during the machining process, it is therefore important to recognize the effects of their influence on the surface's irregularities. Amplitude-frequency analysis of lateral profiles has...
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POSSIBILITY OF IDENTIFICATION OF TECHNICAL CONDITION OF BEARINGS FOR SELF-IGNITION ENGINES BY APPLICATION OF ACOUSTIC EMISSION AS A DIAGNOSTIC SIGNAL
PublicationThis paper presents the results of empirical studies where the acoustic emission (AE) method was applied to identify the technical condition of sliding surfaces of main and crank bearings for main diesel engines. The test results indicate that the measurements of the AE parameters allow the technical condition identification for bearings of this type. The results refer to the measurements of the parameters for AE generated in the...
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State tax policy and reform tools as a risk of running a business. Case study based on Polski Ład – Polish tax reform
PublicationThe aim of the article is to describe and present the Polish tax reform introduced at the beginning of 2022. Tax changes introduced in Poland had a strong impact on the risk of running a business in Poland because in their assumption they directly changed the rules of running a business. Due to the pace of the introduced changes, as well as the scope of the reform, the new tax law was subject to numerous criticisms of taxpayers...
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EXPERIMENTAL ANALYSIS OF CONNECTION BETWEEN OBJECT-ORIENTED METRICS AND SOFTWARE CHANGEABILITY
PublicationFor the purpose of video surveillance software quality assessment in this work the ISO/IEC-9126 norm was used with a particular focus on maintainability of the software system. The paper presents a study on the connection between software metrics derived from the static analysis of the source code and changeability of the video surveillance software system. It is shown that meeting requirements of software quality metrics may result...
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Wykorzystanie miar dywergencji Csiszara do oecny podobieństwa struktury ludności krajów regionu Morza Bałtyckiego
PublicationStudies of socio-economic phenomena often touch on the issues concerning similarity between demographic structures. The measures usually used in the evaluation of structure similarity or in the investigation of the extent of structural changes are functions of distance metrics of their partial indicators. The study points out the possibility of using Csiszar divergence measures (f-divergences) in the quantification of the extent...
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Fuel systems of high power stationary engine
PublicationThe use of alternative fuels and, in the future, synthetic fuels has forced changes in the design of fuel supply systems in internal combustion engines. When operating a stationary engine at constant load, the possibility of using lean fuel mixtures appears. The selection of a precise operating mixture ignition system requires changes in traditional fuel systems. The article presents the current designs of fuel supply systems and...
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Electrical Propterties of Solution Mixtures for Bath Supervision in Ambient Assisted Living
PublicationImpedance properties of bath solution are compared. Any ingredient such as soap, shampoo or bathing salt changes bath-solution’s electrical properties eg. impedance. We have measured and analysed influence of typical bathing ingredients on electrical properties of the solution. We investigate impedance changes over frequency range from 100Hz tu 100kHz as it is most applicable for person detection. Electrical properties of bath...
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Fourier transform infrared spectroscopy (FTIR) of pre- PXBS (0 h) and PXBS during the crosslinking process (24 h–288 h)
Open Research DataThe goal of this research was developing biodegradable and biocompatibile xylitol-based copolymers with improved mechanical properties, and investigating the change in their thermal and chemical properties withprogress of the cross-linking process. Using a raw material of natural origin such as xylitol, a prepolymer wasobtained by esterification and...
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Nowoczesne metody termochemicznej konwersji biomasy w paliwa gazowe, ciekłe i stałe = Modern methods of thermochemical biomass conversion into gas, liquid and solid fuels
PublicationBiomass utilization through direct- or co-combustion with coal, based on coal, hydrogen and oxygen compounds chemical energy conversion into heat in boilers, is simultaneously the cheapest and - according to experts - economically least effective solution. In case of heat and electricity production in cogeneration process in biomass fueled heat and power stations (wood, straw, energetic plants, RDF etc), investment costs are little...
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Selected aspects of the surface quality of the wooden elements after planing
PublicationThe quality of the surface of wooden elements, that have been planed, has got a crucial meaning in the whole production process flow, since the obtained effects affect the quality of wooden surface after painting. The emergence of defects in most cases causes need to qualify workpiece as a scrap part or additional work activity must be done. In the paper selected results of the investigation of the effect of the cutting tool wear...
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Comparison of Downdraft and Updraft Gasification of Biomass in a Fixed Bed Reactor
PublicationThe aim of this study was to compare and analyze the gasification process of beech wood. The experimental investigation was conducted inside a gasifier, which can be operated in downdraft and updraft gasification system. The most important operating parameter studied in this paper was the influence of the amount of supply air on the temperature distribution, biomass consumption and syngas calorific value. The results show that...
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Drewno w adoptowanym zabytku - studium przypadku. Budynek nr 2 w dawnych koszarach garnizonu we Wrzeszczu
PublicationThe current structure along with adapted listed buildings and surroundings will create "Garrison of Culture".This part of Gdańsk and Wrzeszcz has been reconnected after eight decades of isolation from the city by joining the square area formed by Grunwaldzka, Słowackiego, Chrzanowskiego, Szymanowskiego streets and the city center. It is a project whitch fits into an aspect of revitalisation related to the socio-economic and environmental...
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Fabrication and Characterization of Green Polyurethane Foams with Enhanced Vibration Damping Capability
PublicationOver the past decades, there has been an intensive development of the technologies and innovations aimed at increasing the quality of life. This development largely concerns the comfort of use of everyday products that, among others, are products of the automotive, construction, or furniture industries. Considering the increase in the comfort of using products such as cars, houses, and flats, one of the comfort features of their...
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Recovering Evaluation of Narrow-Kerf Teeth of Mini Sash Gang Saws
PublicationSash gang saws with narrow-kerf saw blades are used in the production of glued laminate flooring elements in plants where dry technology is applied. This means that boards or friezes are sawn into top layer lamellae in dry conditions (moisture content of about 10–12%) from expensive wood species, often exotic. The object of this research was stellite-tipped teeth of narrow kerf saw blades sharpened under industrial conditions....
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GP s1 2023 ZASADY PROJEKTOWANIA
e-Learning CoursesGOSPODARKA PRZESTRZENNA s.1 ZASADY PROJEKTOWANIA Prowadzący:dr inż.arch. Roman Ruczyński Zapraszam na cykl: moich wykładównaszych ćwiczeńWaszych prezentacjiwspólnych dyskusji. Zajęcia odbywają się stacjonarnie, kurs założony w celu udostępniania materiałów i archiwizacji prac semestralnych. RR
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ZASADY PROJEKTOWANIA GP s.1 2023
e-Learning CoursesGOSPODARKA PRZESTRZENNA s.1 ZASADY PROJEKTOWANIA Prowadzący: dr inż.arch. Roman Ruczyński Zapraszam na cykl: moich wykładównaszych ćwiczeńWaszych prezentacjiwspólnych dyskusji. Kurs założony w celu udostępniania materiałów i archiwizacji prac semestralnych - RR
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Mechanika Ogólna 2023/2024
e-Learning CoursesMechanika Ogólna jest przedmiotem obowiązkowym na 2-gim semestrze studiów I-go stopnia na kierunku Budownictwo. Główna część Mechaniki Ogólnej to Analiza statyczna układów statycznie wyznaczalnych.
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Test diagnostyczny - język włoski
e-Learning CoursesHasło dostępu wloski