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Search results for: bezdech senny
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Influence of high temperature air-steam mixture application on time wood drying process
PublicationThe results of influence gas-steam mixture drying process on time wood drying process are presented. Wood species, namely oak (Quercus L.), beech (Fagus L.), pine (Pinus L.) and spruce (Picea K.) from the northern part of Pomerania region in Poland, were subject of air-steam mixture drying process. Main focus of those tests was to shorten the time of drying process and afterward to check properties of wood.
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Gustav Oelsners Werk aus polnischer Perspektive. das Erbe der moderne in der polnischen Architektur und Stadtplannung
PublicationDie Leistungen des Architekten Gustav Oelsner sind ein Beispiel für das gemeinsame Erbe der Region, das gemeinsam betrachtet werden sollte – ohne eine de facto künstliche Aufteilung in die Aktivitäten deutscher und polnischer Künstler. Eine solche Herangehensweise ist notwendig bei der Analyse der Biographie nicht nur des Altonaer Architekten, sondern vieler anderer, die das Schicksal der Geschichte in die nationale Einteilung...
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Ab initio Structure Determination of Mg10Ir19B16
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Ab initio Structure Determination of Mg10Ir19B16
PublicationOkreślono strukturę krystalograficzną nowego, nie-centrosymetrycznego nadprzewodzącego związku chemicznego, mg10ir19b16. Została zastosowana cała gama technik eksperymentalnych: dyfrakcja elektronowa, proszkowa dyfrakcja promieniowania rentgenowskiego, mikroskopia elektronowa wysokiej rozdzielczości, itd. Określenie struktury krystalograficznej było skrajnie trudne ponieważ jest to nowy, nieznany dotąd typ struktury krystalicznej,...
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Moisture content during and after high- and normal-temperature drying processes of wood
PublicationThe aim of the article is to present the results of moisture content of wood during and after the high-temperature steam and air–steam mixture drying processes and after an open air-drying process. The knowledge of moisture content changes of wood in the process of its drying is one of the important parameters to economy drying process and to keep the quality of dried wood. Wood samples, namely, spruce (Picea abies K.) and beech...
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V Konferencja Inżynierii Oprogramowania beIT
EventsNa Wydziale ETI Politechniki Gdańskiej odbędzie się V Konferencja Inżynierii Oprogramowania beIT organizowana przez Koło Naukowe Zarządzanie IT oraz Katedrę Inżynierii Oprogramowania.
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The Impact of Weather on Traffic Speed in Urban Area
PublicationThe issue of the impact of weather conditions on trip speed of vehicles has been studied for a long time and it is still the subject of many scientific researches. The impact of atmospheric conditions on the speed with which drivers drive their vehicles seems to be obvious. Good weather conditions, sunny weather with good visibility surely provokes higher speed while rainfall, wind...
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Fasady zabytkowe
PublicationKonserwacja zabytków nie jest zamkniętą księgą niezmiennych praw i zasad. Zmienia się wraz z kolejnymi epokami.I nie jest zbiorem sztywnych reguł, które dają się zastosować bez refleksji i wiedzy. W każdym przypadku prac prowadzonych na konkretnej fasadzie konieczne jest postawienie diagnozy właściwej dla rozpatrywanego przypadku i umiejętne znalezienie środków zaradczych w tej konkretnej jednostkowej sytuacji. Trzeba umieć ocenić...
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Integration Data Model of the Bathymetric Monitoring System for Shallow Waterbodies Using UAV and USV Platforms
PublicationChanges in the seafloor relief are particularly noticeable in shallow waterbodies (at depths up to several metres), where they are of significance for human safety and environmental protection, as well as for which the highest measurement accuracy is required. The aim of this publication is to present the integration data model of the bathymetric monitoring system for shallow waterbodies using Unmanned Aerial Vehicles (UAV) and...
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Manifest prysznicowy: jakiej chciałbym sztuki, wideo, wystawa Wolne pokoje: Fiks, Gdańsk 2019
PublicationFIKS (wystawa zbiorowa) Przemiany współczesnych społeczeństw i zachwianie poczucia bezpieczeństwa mają swoje odbicie w pewnych zachowaniach jednostek. Wynika to nie rzadko z frustracji, poczucia winy lub lęku. Gdzieś tam na innym poziomie świadomości nawykowe mechanizmy obronne niekoniecznie muszą być patologiczne. Codzine rytualy, metody, różnorodność osobistych tarczy, systemów i amuletów, fazy, cykle, niekończący sie kołowrotek. Zwykły...
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NADES propolis extracts - update 2023 and synthesis of derivatives of propolis ingredients
Open Research DataThis dataset contains results of our investigation aiming in determination of antimicrobial potential of the propolis extracts produced with deep eutectic solvents
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Kinetics of molecular decomposition under irradiation of gold nanoparticles with nanosecond laser pulses—A 5-Bromouracil case study
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Cluster-glass behavior of a highly oxygen deficient perovskite, BaBi0.28Co0.72O2.2
PublicationZostała przeprowadzona synteza zwiąku typu perowskitowego BaBi0.28Co0.72O2.2. Stuktura krystalograficzna została określona poprzez dyfrakcję neutronową i promieniowania rentgenowskiego. Pomiary podatności magnetycznej AC i DC wskazują na zachowanie typu szkła klastrowego, które wynika z oddziaływań klastrów ferromagnetycznych.
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Kinetics of molecular decomposition under irradiation of gold nanoparticles with nanosecond laser pulses—A 5-Bromouracil case study
PublicationABSTRACT Laser illuminated gold nanoparticles (AuNPs) efficiently absorb light and heat up the surrounding medium, leading to versatile applications ranging from plasmonic catalysis to cancer photothermal therapy. Therefore, an in-depth understanding of the thermal, optical, and electron induced reaction pathways is required. Here, the electrophilic DNA nucleobase analog 5-Bromouracil (BrU) has been used as a model compound to...
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The selected effects of high temperature air-steam mixture wood drying
PublicationThe results of properties change of beech wood after drying process are presented. The wood taken to experiments was from northern part of Pomeranian region in Poland. Before the main high temperature drying process using air-steam mixture, wood was initially dried in an open air conditions. The high temperature drying process was conducted at temperature 120oC, humidity 48%, flow rate of drying medium 2.5m/s and atmospheric pressure....
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The influence of high temperature wood drying conditions using air-steam mixture on its properties
PublicationThe results of properties change of beech wood after drying process are presented. The wood taken to experiments was from northern part of Pomeranian region in Poland. Before the main high temperature drying process using air-steam mixture, wood was initially dried in an open air conditions. The high temperature drying process was conducted at temperature 120oC, humidity 48%, flow rate of drying medium 2.5m/s and atmospheric pressure....
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Atmospheric deposition in coniferous and deciduous tree stands in Poland
PublicationThe objective of this study was to assess the transformation of precipitation in terms of quantity and chemical composition following contact with the crown layer in tree stands with varied species composition, to investigate the effect of four predominant forest-forming species (pine, spruce, beech, and oak) on the amount and composition of precipitation reaching forest soils, and to determine the sources of pollution in atmospheric...
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Ca25Co22O56(OH)28: a layered misfit compound
PublicationW pracy przedstawiony został sposób syntezy (w warunkach wysokich ciśnień) nowego warstwowego związku o strukturze niedopasowanej (tzw. misfit). Dyskutowane są właściwości strukturalne i magnetyczne.
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AN INNOVATIVE APPROACH TO PREDICTION ENERGETIC EFFECTS OF WOOD CUTTING PROCESS WITH CIRCULAR-SAW BLADES
PublicationIn the classical approach, energetic effects (cutting forces and cutting power) of wood sawing process are generally calculated on the basis of the specific cutting resistance, which is in the case of wood cutting the function of more or less important factors. The aim of the paper is to present a new calculating model using the application of modern fracture mechanics and to compare cutting parameters of native beech, Bendywood...
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Preliminary studies on the effect of feed speed on the colour change of wood
PublicationThis paper presents the results of preliminary analyses of the effect of cutting parameters on changes in the colour of wood. Beech wood cut with use circular saw was analysed. The cutting parameter tested was the feed speed, represented by the feed per tooth. Sawing processes with different feed per tooth ranging from 0.0008 mm to 0.09 mm were analysed. It was observed that over the entire range of feed rate per tooth analysed,...
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Hydrogen production from wood waste by mean of dark fermentation
PublicationThe utilization of wood wastes in clean and green chemistry method like by mean of dark fermentation, is a highly desired solution of waste management. In the article model for the estimation hydrogen potential of wood waste is given. The model has been used to calculate the potential theoretical hydrogen mass that can be produced from wood wastes in Pomerania and Silesia: pine, spruce, fir, beech and oak. In the introduction,...
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Superconductivity in CuxTiSe2
PublicationOdkryty został nowy związek nadprzewodzący o wzorze chemicznym CuxTiSe2. Jest to pierwszy znany przypadek związku z występującym CDW (fale gęstości ładunku), gdzie w wyniku domieszkowania chemicznego wzbudzany jest stan nadprzewodnictwa. Dyskutowany jest diagram fazowy dla całego zakresu domieszkowania miedzi: 0 < x < 0.10.
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Insulator to correlated metal transition in V1−xMoxO2
PublicationDyskutowane jest przejście typu izolatro - metal w domieszkowanym atomami Molibdenu związku V1-xMoxO2. Prezentowany jest diagram fazowy.
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Influence of steam drying process on wood mechanical properties
PublicationResults of influence of gas-steam mixture drying process on mechanical properties of material are presented. Wood species, namely oak (Quercus L.), beech (Fagus L.), pine (Pinus L.) and spruce (Picea K.) from the northern part of Pomerania region in Poland, were subject of air-steam mixture drying process in a laboratory kiln especially arranged for that reason. Measurements of the global coefficient of elasticity and bending strength...
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By-Products from Food Industry as a Promising Alternative for the Conventional Fillers for Wood–Polymer Composites
PublicationThe present paper describes the application of two types of food-industry by-products, brewers’ spent grain (BSG), and coffee silverskin (ŁK) as promising alternatives for the conventional beech wood flour (WF) for wood–polymer composites. The main goal was to investigate the impact of partial and complete WF substitution by BSG and ŁK on the processing, structure, physicochemical, mechanical, and thermal properties of resulting...
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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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Sawing Processes as a Way of Determining Fracture Toughness and Shear Yield Stresses of Wood
PublicationA new computational model, based on fracture mechanics, was used to determine cutting forces. Unlike traditional computing methods, which depend on many coefficients reflecting the machining of solid wood, the new model uses two main parameters: fracture toughness and shear yield stresses. The aim of this study was to apply this new method to determine these parameters for the tooth cutting edge principal positions and longitudinal...
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Fracture Toughness and Shear Yield Strength Determination for Two Selected Species of Central European Provenance
PublicationWhen offcut of wood is formed by shearing, Atkins’s analyses of sawing processes can be applied. Using this modern approach, it is possible to determine the fracture toughness and shear yield strength of wood. This model is only applicable for the axial-perpendicular cutting direction because both of these parameters are suitable for the given direction of cutting edge movement and cannot be considered material constants. Alternatively,...
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Revisiting the estimation of cutting power with different energetic methods while sawing soft and hard woods on the circular sawing machine: a Central European case
PublicationIn the classical approaches, used in Central Europe in practice, cutting forces and cutting power in sawing processes of timber are commonly computed by means of the specific cutting resistance kc. It needs to be highlighted that accessible sources in handbooks and the scientific literature do not provide any data about wood provenance, nor about cutting conditions, in which cutting resistance has been empirically determined. In...
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CAVER Analyst 1.0: graphic tool for interactive visualization and analysis of tunnels and channels in protein structures
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Optimization of Saccharification Conditions of Lignocellulosic Biomass under Alkaline Pre-Treatment and Enzymatic Hydrolysis
PublicationPre-treatment is a significant step in the production of second-generation biofuels from waste lignocellulosic materials. Obtaining biofuels as a result of fermentation processes requires appropriate pre-treatment conditions ensuring the highest possible degree of saccharification of the feed material. An influence of the following process parameters were investigated for alkaline pre-treatment of Salix viminalis L.: catalyst concentration...
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SORPTION OF SELECTED CHLORINATED SOLVENTS ON PLANT DEBRIS COLLECTED IN A CITY PARK
PublicationDebris from deciduous trees in the form of park green waste was investigated as a potential biosorbent for the removal of chlorinated solvents from water. The sorption properties of beech leaves and cupules, oak leaves and acorns, birch leaves and lime leaves (all tree species common for a moderate climate) in a non-modified form were investigated with regard to the removal of perchloroethylene, 1,1,2-trichloroethane and 1,1,1,2-tetrachlorothane....
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Crystal growth of CsCl-type Yb0.24Sn0.76Ru
PublicationWzrost kryształów o stechiometrii Yb0.24Sn0.76Ru został przeprowadzony metodą topnikową. Kryształy poddano badaniom dyfrakcyjnym a także mikroskopii elektornowej. Yb0.24Sn0.76Ru krystalizuje w sześciennej strukturze typu chlorku cezu (CsCl).
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Propolis and polyphenols derived from this product as potential antifungal agents
ProjectsProject realized in Department of Pharmaceutical Technology and Biochemistry according to UMO-2020/39/B/NZ7/02901 agreement from 2021-07-20
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Lignocellulosic waste biosorbents infused with deep eutectic solvents for biogas desulfurization
PublicationThis paper introduces an innovative method for treating biogas streams, employing lignocellulosic biosorbents infused with environmentally friendly solvents known as deep eutectic solvents (DES). The primary focus of this study was the elimination of volatile organosulfur compounds (VSCs) from model biogas. Biosorbents, including energetic poplar wood, antipka tree, corncobs, and beech wood, were used, each with varying levels...
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Long-term measurements from a photovoltaic power plant and meteorological stations at the Laboratory LINTE^2 of Gdańsk University of Technology
Open Research Data1) The Laboratory LINTE^2 is a large research infrastructure operated by the Faculty of Electrical and Control Engineering at Gdańsk University of Technology, to be found in Gdańsk, Poland (54.3690 N, 18.6130 E). 2) The measurements have been collected from a photovoltaic power plant located on the roof of the laboratory, having total capacity...
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Fermentative Conversion of Two-Step Pre-Treated Lignocellulosic Biomass to Hydrogen
PublicationFermentative hydrogen production via dark fermentation with the application of lignocellulosic biomass requires a multistep pre-treatment procedure, due to the complexed structure of the raw material. Hence, the comparison of the hydrogen productivity potential of different lignocellulosic materials (LCMs) in relation to the lignocellulosic biomass composition is often considered as an interesting field of research. In this study,...
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Transcriptomics in Toxicogenomics, Part II: Preprocessing and Differential Expression Analysis for High Quality Data
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Transcriptomics in Toxicogenomics, Part I: Experimental Design, Technologies, Publicly Available Data, and Regulatory Aspects
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Health-related quality of life data from a phase 3, international, randomized, open-label, multicenter study in patients with previously treated mantle cell lymphoma treated with ibrutinib versus temsirolimus
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Chemical Munitions Search & Assessment—An evaluation of the dumped munitions problem in the Baltic Sea
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Ibrutinib versus temsirolimus in patients with relapsed or refractory mantle-cell lymphoma: an international, randomised, open-label, phase 3 study
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DNA methylation as a mediator of HLA-DRB1*15:01 and a protective variant in multiple sclerosis
PublicationThe human leukocyte antigen (HLA) haplotype DRB1*15:01 is the major risk factor for multiple sclerosis (MS). Here, we find that DRB1*15:01 is hypomethylated and predominantly expressed in monocytes among carriers of DRB1*15:01. A differentially methylated region (DMR) encompassing HLA-DRB1 exon 2 is particularly affected and displays methylation-sensitive regulatory properties in vitro. Causal inference and Mendelian randomization...
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Laboratorium Inżynierii Jakości LAB Q
Laboratories1. Six sigma – podstawy 2. Six Sigma – wybrane narzędzia (m.in. analiza rozkładu - rozkład normalny/dwumianowy, normalizacja rozkładu – centralne twierdzenie graniczne) 3. Six Sigma - testowanie hipotez (rozróżnianie grup komponentów na podstawie pomiarów i analizy statystycznej) z wykorzystaniem programu Minitab 4. Analiza systemów pomiarowych (MSA) dla pomiarów powtarzalnych z wykorzystaniem programu Minitab (m.in. Gage R&R...
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Sposób otrzymywania reaktywnych polioli z materiałów drewnopochodnych, reaktywne poliole otrzymane tym sposobem oraz sposób wytwarzania materiałów poliuretanowych z otrzymanych reaktywnych polioli
InventionsPrzetwarzanie odpadów drewnopochodnych z płyt HDF, MDF, pilśniowych, wiórowych, OSB, sklejka, itp. na poliole oraz sposób otrzymywania poliuretanu na bazie tego poliolu.
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Sposób wytwarzania bio-komponentów na bazie hydroksy-pochodnych polioli z biomasy roślinnej
InventionsPrzetwarzanie odpadów z biomasy roślinnej na poliole.
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Sposób wytwarzania materiałów poliuretanowych z reaktywnych polioli oraz otrzymywanych z odpadów po przerobie drewna lub odpadów drewnopodobnych
InventionsPrzetwarzanie polioli z biomasy roślinnej i/lub odpadów drewnopodobnych i/lub polioli petrochemicznych, domieszkowanych odpadami drewnianymi i/lub drewnopodobnymi na kompozyt poliuretanowy.
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Surgical site infection after gastrointestinal surgery in high-income, middle-income, and low-income countries: a prospective, international, multicentre cohort study
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Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries
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Outcomes of gynecologic cancer surgery during the COVID-19 pandemic: an international, multicenter, prospective CovidSurg-Gynecologic Oncology Cancer study
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