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Search results for: PVA FILMS
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Internationalization patterns of Polish family high-tech firms
PublicationThe objective of the article is to explore internationalisation patterns of family high-tech firms, especially their internationalisation motives, intensity, speed, and entry modes. The empirical part adopts a quantitative approach. The results of the survey are presented on the sample of 263 high-tech production firms from Poland, including 101 family firms. The survey was conducted in all 16 Polish regions. The calculations from...
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Foreign Entry Modes of High-tech Firms in Poland
PublicationThe main objective of the article is to present the role and importance of foreign entry modes in internationalization process and their key determinants. Research methods: A quantitative research design was used. A survey was conducted on the sample of 263 firms operating in...
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Gender, education and motivation of onwers of small firms and their growth
PublicationAlmost every article on the growht of SMEs begins with noting the lack of a unified theory or a model of growth in thei group of companies, although the growth of small and medium sized enterprises has been the subject of research for many years and early theories about it appeared already before the Second World War. In the paper some conlusions about the relation between gender, education and motivation of owner and the small...
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Encapsulation of Amikacin into Microparticles Based on Low-Molecular-Weight Poly(lactic acid) and Poly(lactic acid-co-polyethylene glycol)
PublicationThe aim of this study was to fabricate novel microparticles (MPs) for efficient and long-term delivery of amikacin (AMI). The emulsification method proposed for encapsulating AMI employed low-molecular-weight poly(lactic acid) (PLA) and poly(lactic acid-co-polyethylene glycol) (PLA−PEG), both supplemented with poly(vinyl alcohol) (PVA). The diameters of the particles obtained were determined as less than 30 μm. Based on an in-vitro...
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Spectroscopy properties of 1,8-diazafluoren-9-one (DFO) in PVA polymer for different concentrations
Open Research DataSpectroscopy properties: absorption and fluorescence spectra of 1,8-diazafluoren-9-one (DFO) in PVA film for different concentrations of dye.
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Investigations of a new humidity sensor with polymer film
PublicationPrzedstawiono wyniki badań impedancyjnych nowego czujnika wilgotności z filmem polimerowym. Jako polimer wykorzystano chemicznie modyfikowaną polietylenoiminę.
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Film na szosie : Zagospodarowanie wód opadowych
PublicationOdwodnienie nawierzchni drogowej. Problem skuteczności i bezpieczeństwa. Ochrona przed tworzeniem się na powierzchni filmu.
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Thick film Lisicon sensor with gold electrodes.
PublicationW pracy przedstawiono preparatykę i badania czujnika gazowego na bazie litowego jonoprzewodzącego elektrolitu stałego. Czujnik został przygotowany w technologii grubowarstwowej. Jego zasada działania polega na pomiarze prądu elektrycznego w czasie liniowych zmian napięcia. Charakterystyki prądowo-napięciowe czujnika mają unikalny kształt, zależny od rodzaju gazu oraz jego koncentracji. Pomiary wykonano w mieszaninach dwutlenku...
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Przydatność białka rybiego w postaci kolagenu lub żelatyny oraz polisacharydu - kapa-karagenu do wytwarzania aktywnych opakowań biodegradowalnych = Usefulness of fish collagen, gelatin and carrageenan for preparation of active biodegradable packages
PublicationSummary - The possibility of use of protein films made of fish collagen or gelatin as well as polysaccharide carrageenan films as carriers of enzymes (lysozyme or lysostaphyne), for preparation of microbiologically active packages, was investigated. It was found that crosslinking of such systems with N-[3(dimethylamino)propyl]-N'-ethylcarboimide (EDC) does not influence the activity of lysozyme immobilized in the films (Table 1)....
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Testing of PTA automatic braze-welding technology for producing absorber joints of solar collectors
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GIS estimated potential of rooftop PVs in urban areas - case study Wrocław (Poland)
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Photoreactive UV-Crosslinkable Acrylic Pressure-Sensitive Adhesives (PSA) Containing Multifunctional Photoinitiators
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The Problems of Application of PVD/CVD Thin Hard Coatings for Heavy-Loaded Machine Components
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Identyfikacja i diagnostyka procesu oczyszczania ścieków przy użyciu metody MS-PCA
PublicationPołączenie algorytmu PCA z dekompozycją falkową pozwala na wiarygodną identyfikację i diagnostykę procesu z wieloma skalami czasu. Niniejszy artykuł pokazuje jak przy pomocy wspomianego narzedzia określić stan pracy obiektu oraz odpowiednio szybko wykryć uszkodzenia (np. czujników pomiarowych) lub stany awaryjne obiektu jakim jest oczyszczalnia ścieków. Przedstawiony jest przykład detekcji błędów pomiarowych (stężenie tlenu w komorze...
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Modelling of laminated glass PVB walls of buildings exposed to vehicle impact with different speeds
PublicationThis paper presents an analytical model, developed for laminated glass subjected to a low-velocity impact. It has the ability to capture glass cracks as well as large non-linear deformations. It is based mathematically on the firstorder deformation concept, which considers the effect of membrane and transverse shear as well as bending. This theory uses damage mechanics to capture the glass cracking. For this purpose, several experiments...
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Tensile failure study of 3D printed PLA using DIC technique and FEM analysis
PublicationThe 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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Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films
PublicationWO3 nanowires (WO3-NWs) decorated with gold nanoparticles (AuNPs) were utilized in resistive gas sensor devices to detect ethanol by use of fluctuation enhanced sensing (FES). The experimental system records both DC resistance and fluctuations of the sensing film. Our data verify that the sensitivity and selectivity of the gas sensor are improved by applying FES when the sensor is stimulated with a combination of UV light and heating....
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Enhancement of the efficiency of the third harmonic generation process in ZnO:F thin films probed by photoluminescence and Raman spectroscopy
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Aggregation and excitation trapping of 3,3'-diethyl-9-methylthiacarbocyanine iodide in disordered and uniaxially oriented polymer films
PublicationPrzedstawiono analizę właściwości fotofizycznych barwnika 3,3'-diethyl-9-methylthiacarbocyanine iodide (MDTCI)domieszkowanego w zakresie dużych koncentracji w nieuporządkowanych osiowo rozciąganych foliach polimerowych. Zaobserwowano obecność fluoryzujących agregatów MDCTI zarówno w foliach nierozciąganych i rozciąganych stosując metody spektroskopii czasowo-rozdzielonej.
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Excitation energy transfer in partly ordered polymer films differing in donor and acceptor transition moments orientation
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Active Double-Layered Films Enriched with AgNPs in Great Water Dock Root and Pu-Erh Extracts
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Excitation energy migration in uniaxially oriented polymer films: a comparison between strongly and weakly organized systems
PublicationMechanizm wieloetapowej migracji energii w osiowo rozciąganych foliach polimerowych jest analizowany w układach o silnej i słabej orientacji molekuł barwników umieszczonych w matrycach poliwinylowych. Porównanie tych różnie orientujących się układów bazuje na zjawisku depolaryzacji stężeniowej anizotropii emisji, symulacjach Monte Carlo i wartościach liniowego dichroizmu. Pokazano, że uporządkowanie momentów przejścia fluoroforów...
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Solid-State Dewetting as a Driving Force for Structural Transformation and Magnetization Reversal Mechniasm in FePd Thin Films
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Electronic circular dichroism imaging (CDi) maps local aggregation modes in thin films of chiral oligothiophenes
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A study of optical properties and annealing effect on the absorption edge of pristine- and iodine-doped polyazomethine thin films
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Polylactide-Based Films with the Addition of Poly(ethylene glycol) and Extract of Propolis—Physico-Chemical and Storage Properties
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Photoconduction and magnetic field effect on photoconduction in hole-transporting star-burst amine (m-MTDATA) films
PublicationPhotoconduction and magnetic field effect on photoconduction have been investigated as a function of electric field strength, excitation light intensity and wavelength in vacuum evaporated films of m-MTDATA (4,4′,4″-tris(N-(3-methylphenyl)-N-phenylylamino) triphenylamine), the starburst amine commonly used as hole-transporting material in organic light-emitting diodes. The photocurrent is found to be generated by the singlet exciton...
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Influence of B/N co-doping on electrical and photoluminescence properties of CVD grown homoepitaxial diamond films
PublicationBoron doped diamond (BDD) has great potential in electrical, and electrochemical sensing applications. The growth parameters, substrates, and synthesis method play a vital role in the preparation of semiconducting BDD to metallic BDD. Doping of other elements along with boron (B) into diamond demonstrated improved efficacy of B doping and exceptional properties. In the present study, B and nitrogen (N) co-doped diamond has been...
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Electronic States of Tris(bipyridine) Ruthenium(II) Complexes in Neat Solid Films Investigated by Electroabsorption Spectroscopy
PublicationWe present the electric field-induced absorption (electroabsorption, EA) spectra of the solid neat films of tris(bipyridine) Ru(II) complexes, which were recently functionalized in our group as photosensitizers in dye-sensitized solar cells, and we compare them with the results obtained for an archetypal [Ru(bpy)3]2+ ion (RBY). We argue that it is difficult to establish a unique set of molecular parameter values by discrete parametrization...
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Evolution of Ag nanostructures created from thin films: UV–vis absorption and its theoretical predictions
PublicationAg-based plasmonic nanostructures were manufactured by thermal annealing of thin metallic films. Structure and morphology were studied using scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS). SEM images show that the formation of nanostructures is influenced by the initial layer thickness as well as the...
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Electrical conductivity of NbN-SiO2 films obtained by ammonolysis of Nb2O5-SiO2 sol-gel derived coatings
PublicationW pracy przedstawiono badania przewodnictwa elektrycznego (w zakresie 5-280K) warstw NbN-SiO2 o grubości 450 nm. Warstwy uzyskano poprzez azotowanie otrzymanych metodą zol-żel warstw Nb2O5-SiO2, o różnym stosunku molowym Nb2O5/SiO2. Azotowanie takich warstw w temperaturze 1200C prowadzi do otrzymania metalicznych granul NbN w amorficznej matrycy SiO2. Struktura warstw była badana mikroskopem sił atomowych (AFM) oraz metodą dyfrakcji...
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Shape memory thin films of Polyurethane: Does graphene content affect the recovery behavior of Polyurethane nanocomposites?
PublicationThin nanocomposite films of polyurethane have received remarkable attention due to their shape memory properties. As most of the reports focus on the beneficial aspects of the presence of nanofillers such as graphene nanoplatelets (GNPs) introduced into shape memory polymers, some research results reveal the opposite trend. The polyether/polyester-based polyurethane was synthesized through a condensation polymerization and the...
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Enhanced Visible Light Active WO3 Thin Films Toward Air Purification: Effect of the Synthesis Conditions
PublicationTaking into consideration, our current environmental situation in the world people should face with growing problem of air and water pollution. Heterogeneous photocatalysis is highly promising tool to improve both, air and water quality through decomposition/mineralization of contaminations directly into harmless CO2 and H2O under ambient conditions. In this contribution we focused on the synthesis of self-assembly WO3 thin films...
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Anodic titania nanotubes decorated with gold nanoparticles produced by laser-induced dewetting of thin metallic films
PublicationHerein, we combine titania layers with gold species in a laser-supported process and report a substantial change of properties of the resulting heterostructures depending on the major processing parameters. Electrodes were fabricated via an anodisation process complemented with calcination to ensure a crystalline phase, and followed by magnetron sputtering of metallic films. The obtained TiO2 nanotubes with deposited thin (5, 10...
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Rubrene Thin Films with Viably Enhanced Charge Transport Fabricated by Cryo-Matrix-Assisted Laser Evaporation
PublicationAmong organic semiconductors, rubrene (RB; C42H28) is of rapidly growing interest for the development of organic and hybrid electronics due to exceptionally long spin diffusion length and carrier mobility up to 20 cm2V−1s−1 in single crystals. However, the fabrication of RB thin films resembling properties of the bulk remains challenging, mainly because of the RB molecule’s twisted conformation. This hinders the formation of orthorhombic...
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Excitation energy transfer in partly ordered polymer films differing in donor and acceptor transition moments orientation
PublicationBased on spectroscopic measurements selected properties of nonradiative Förster energy transport are studied in uniaxially stretched polyvinyl alcohol thin films for three systems differing in donor and acceptor transition moments orientation relative to the axis of stretching. In particular, donor – acceptor emission anisotropy spectra yield completely different regularities for these systems in uniaxially stretched films, whereas...
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Ordered titanium templates functionalized by gold films for biosensing applications – Towards non-enzymatic glucose detection
PublicationRecently, metal nanostructures evoke much interest due to application potential in highly sensitive detectors in biochemistry and medical diagnostics. In this work we report on preparation and characteristics of thin (1–100 nm) Au films deposited onto highly ordered structured titanium templates for SERS (Surface Enhanced Raman Spectroscopy) and electrochemical sensing. The Ti templates are formed by selective removal of TiO2 nanotubes...
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Instalacje PV zintegrowane z budynkiem
PublicationBIPV (ang. Building Integrated Photovoltaics) - architektoniczne, strukturalne i estetyczne systemy fotowoltaicznezintegrowane z budynkami - to jedna z najbardziej obiecujących form wykorzystania energii odnawialnej,pozwalająca na połączenie systemu generującego energie elektryczna z obiektami takimi jak domy mieszkalne,szkoły i biurowce. Obecnie instalacje takie powstają na całym świecie, głównie w prestiżowych projektach, takichjak...
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PV installations and the safety of residential buildings
PublicationThe dynamic development of the photovoltaic industry entails threats that have a direct impact on the safety of residential buildings. Appropriate design of a PV installation can be a challenge due to the multifaceted nature of this issue. The designer should take into account issues related to the selection of electrical parameters of the installation, adapting lightning and surge protection in accordance...
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Managed care (Langhorne, Pa.)
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Innovations in family firms: a study of owner-managers’ knowledge development
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International Strategy as the Facilitator of the Speed, Scope, and Scale of Firms’ Internationalization
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Determinants of the Internationalization of Family Firms - a Structural Eqquation Modeling Analysis
PublicationCurrently, international behaviors of family businesses (FBs) attract a growing interest of researchers. In an increasingly competitive environment, numerous FBs are forced to expand into foreign markets in search for ways to survive or grow. The article is both theoretical and empirical. In the theoretical part it presents theoretical concepts of FBs internationalization, especially determinants for their going international....
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Motives for Going International and Entry Modes of Family Firms in Poland
PublicationThe artucule in the theoretical part focuses on theoretical concepts of firm internationalisation and specifics of internationalisation of FBs, especially their motives for going international. In the empirical part the quqantitative approach is adopted. The results of survey are presented on the sample of 216 firms, including 88 FBs. The statistical analysis is carried out
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Absorption and fluorescence spectra of 1,8-diazafluoren-9-one (DFO) in PVA polymer for different concentrations
Open Research DataAbsorption and fluorescence spectra of 1,8-diazafluoren-9-one (DFO) in PVA film for different concentrations of dye.
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The Impact of Selected Parameters on the efficiency of PV Installations - Simulation Test of the 1 MW PV Farm in the PVSyst Program
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RAMAN DIAGNOSTICS OF CVD DIAMOND GROWTH
PublicationDevelopment of Raman spectroscopic system for diagnostics of growth of diamond and BDD (Boron- Doped-Diamond) thin films during μPA CVD (Microwave Plasma Assisted Chemical Vapour Deposition) process is described. Raman studies of such films were carried out as in-situ monitoring of film deposition as ex-situ measurements conducted for a sample outside the reaction vessel after manufacturing process. Modular system for the in-situ...
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An inter-laboratory validation of methods of lipid peroxidation measurement in UVA-treated human plasma samples
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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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Determination of butyltin stabilizers in PVC using Liquid-Phase microextraction with electrothermal atomic absorption spectrometry
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