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Search results for: LAMP
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Lamp of adjustable spectrum for photographic usage
PublicationPhotography is a unique rapidly growing interdisciplinary field encompassing aspects of science, art and technology. Expectations of photographers are steadily increasing with the development of technology. One of the areas playing a crucial role in photography is lighting. Consequently, several types of light sources for photographic use have been developed. The ongoing research in this field concentrates on lamps with tunable...
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Wymiana lamp sodowych wysokoprężnych na lampy ledowe – aspekty techniczne i ekonomiczne modernizacji oświetlenia dróg
PublicationPrzedstawiono zasady projektowania oświetlenia dróg zgodnie z aktualnymi normami. Wykonano uproszczone projekty oświetlenia dwóch rodzajów dróg i na ich przykładzie porównano parametry techniczne lamp ledowych i lamp sodowych wysokoprężnych. Zwrócono uwagę na odkształcenie prądu pobieranego przez te lampy. Wykonano analizę ekonomiczną pozwalającą ocenić opłacalność stosowania lamp ledowych.
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Comparison of modelling and measurement results of spectra emitted by a programmable lamp
PublicationNowadays artificial light with an optimized spectrum is used in many different applications. For instance, it is widely used in museums and exhibitions to illuminate the art. Moreover, such light stimulates the growth of plants, or can be applied in industry and healthcare. To achieve the best results for each application, the adjusting of a dedicated spectrum is required, which is a complicated task. The ongoing research is focused...
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Hydrogen evolution on the reduced TiO2 under simulated solar lamp
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Loop-mediated isothermal amplification (LAMP) as a diagnostic tool in detection of infectious diseases
PublicationLoop-mediated isothermal amplification (LAMP) is a gene amplification method which amplifies DNA with high specificity and efficiency under isothermal conditions. Because of its rapidity and simplicity, it is a valuable diagnostic tool in the early detection and identification of infectious diseases. LAMP method is based on the use of a set of four to six specially designed primers spanning six to eight distinct sequences on the...
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Impact of TiO2 Surface Defects on the Mechanism of Acetaldehyde Decomposition under Irradiation of a Fluorescent Lamp
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Toxicity of aqueous mixture of phenol and chlorophenols upon photosensitized oxidation initiated by sunlight or vis-lamp
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Badanie wpływu odkształcenia napięcia sieci na przebieg prądu obciążenia wybranych lamp oświetlenia ulicznego
PublicationCechą charakterystyczną większości rodzajów lamp jest odkształcony prąd obciążenia. W niektórych przypadkach odkształcenie prądu może być duże, co niekorzystnie wpływa na sieć zasilającą. Odkształcenie to pogłębia się, gdy lampy są zasilane odkształconym napięciem. W artykule przedstawiono wyniki badań prądu obciążenia następujących lamp stosowanych w oświetleniu ulicznym: sodowej wysokoprężnej, sodowej niskoprężnej oraz ledowej....
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Badanie wpływu odkształcenia napięcia sieci na przebieg prądu obciążenia wybranych lamp oświetlenia ulicznego
PublicationCechą charakterystyczną większości rodzajów lamp jest odkształcony prąd obciążenia. W niektórych przypadkach odkształcenie prądu może być duże, co niekorzystnie wpływa na sieć zasilającą. Odkształcenie to pogłębia się, gdy lampy są zasilane odkształconym napięciem. W artykule przedstawiono wyniki badań prądu obciążenia następujących lamp stosowanych w oświetleniu ulicznym: lampy sodowej wysokoprężnej, lampy sodowej niskoprężnej...
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HISTORIA ROZWOJU LAMP I OPRAW OŚWIETLENIOWYCH SŁUŻĄCYCH DO OŚWIETLANIA WNĘTRZ MIESZKALNYCH. CZĘŚĆ PIERWSZA
PublicationThis paper reflects on the history of decorative luminaire design. The development of the new sources of light within residential environment has been changing the luminaire design. Residential dwellings have been lit by a lot of light sources through the centuries form a point lamps like candle or incandescent lamps to linear florescent lamps and LED strips. A development of SSL technology introduced an idea of lit surfaces. Energy...
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Ethylene decomposition on TiO2 - UV and Fluorescence lamp
Open Research DataData contain chromatograms recorded during decomposition of ethylene flowing over TiO2 through the quartz tubular shape reactor. TiO2 was coated onto glass plates with dimension of 2cmx2cm, in total 3 plates were used and placed inside reactor. Reactor was irradiated by UV (Special 'TL'E, Philips) or fluorescent (Lumilux, OSRAM) 3 ring-shaped lamps,...
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Lampa nienaftowa - FreeCAD
e-Learning CoursesFreeCAD jest uniwersalnym parametrycznym programem modelującym w przestrzeni 3D CAD, którego rozwój odbywa się wyłącznie według zasad Open Source (licencja LGPL) .FreeCAD jest przeznaczony bezpośrednio dla inżynierii mechanicznej i projektowania detali i produktów, ale mieści się również w szerszym zakresie zastosowań związanych z inżynierią, takich jak architektura, analiza elementów ukończonych, druk 3D i wiele pokrewnych. PS Kurs...
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Lampas
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Revista Digital Lampsakos
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Wpływ czasu naświetlania lampą LED na właściwości mechaniczne wypełnień stomatologicznych
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Agnieszka Teresa Lamprecht mgr inż. arch.
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The effect of mixed anionic-cationic films composition on flotation of hydrocarbon particles from water
PublicationBadano adsorpcję dodecylosulfonianu sodowego oraz jednego z bromków alkilo-trimetyloamoniowych z roztworów ich mieszanin na granicach faz woda/powietrze oraz woda/dodekan. Obliczone stężenia powierzchniowe poszczególnych surfaktantów wykorzystano do wyznaczenia składu filmów adsorpcyjnych. Skład filmów anionowo-kationowych był podstawą do przewidywania zmian ładunku elektrostatycznego kropli dodekanu oraz efektywności flotacji...
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Influence of an Electronic Structure of N-TiO2 on Its Photocatalytic Activity towards Decomposition of Acetaldehyde under UV and Fluorescent Lamps Irradiation
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Emission spectra of UV and fluorescent lamps
Open Research DataData contain emision spectra of two different UV lamps: Special "TL"E 22W/10 Black light (Philips) and Semilac UV, 36 W and also Fluorescent lamp: L22W/840 Circular Cool White, Lumilux (Osram). These spectra were recorded by USB4000 Fiber Optic Spectrometer.
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Elżbieta Lamparska dr inż.
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Analiza harmoniczna prądu w instalacji z lampami metalohalogenkowymi. Zastosowanie Komputerów w Nauce i Technice.XIII cykl seminariów zorganizowanych przez PTETiS, Oddział Gdańsk.
PublicationProjektując instalację elektryczną zawierającą lampy metalohalogenkowe należy uwzględnić specyfikę tych odbiorników energii, a przede wszystkim znaczną zawartość wyższych harmonicznych w pobieranym prądzie. Odkształcenia prądu wpływają na dobór zabezpieczeń, przekroju przewodów i transformatora zasilającego. W artykule przedstawiono analizę harmoniczną prądu pobieranego przez lampy metalohalogenkowe oraz omówiono wpływ stopnia...
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Complex multidisciplinary optimization of turbine blading systems
PublicationThe paper describes the methods and results of direct optimization of turbine blading systems using a software package Opti_turb. The final shape of the blading is obtained from minimizing the objective function, which is the total energy loss of the stage, including the leaving energy. The current values of the objective function are found from 3D RANS computations (from a code FlowER) of geometries changed during the process...
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Tesla Friction-Type Micro Turbine For Small-Scale Cogeneration
PublicationTesla turbine is rarely used in professional power installations due to its specific work characteristics and relatively low internal efficiency. However, it has some potential to be applied in micro-power plants operating in distributed co-generation systems, also working in an organic Rankine cycle. This paper presents results from numerical calculations of flow in three models of Tesla disk turbines assuming nitrogen as a working...
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Investigations of Aerodynamics of Tesla Bladeless Microturbines
PublicationThe paper presents an analysis of a Tesla bladeless turbine for a co-generating micro-power plant of heat capacity 20 kW, whichoperates in an organic Rankine cycle with a low-boiling medium. Numerical calculations of flow in several Tesla turbine models areperformed for a range of design parameters. Results of investigations exhibit interesting features in the distribution of flowparameters within the turbine interdisk space. The...
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Advantages of adaptive control in LP turbines.
PublicationW pracy przedstawiono wyniki obliczeń numerycznych dla ostatniego stopnia turbiny parowej, w którym kierownica posiadała mozliwośc adaptacji do zmiennego ciśnienia w kondensatorze. Adaptacyjność uzyskiwano porzez zmianę kąta ustawienia ruchomej krawędzi spływu (lotki) kierownicy. Wykazano korzysny wpływ tego typu regulacji zarówno na sprawność ostatniego stopnia jak i stopni poprzedzających.
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The high-cyclic model for sand tested beyond the usual ranges of application
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Objectivity in the non-Markovian spin-boson model
PublicationObjectivity constitutes one of the main features of the macroscopic classical world. An important aspect of the quantum-to-classical transition issue is to explain how such a property arises from the microscopic quantum theory. Recently, within the framework of open quantum systems, there has been proposed such a mechanism in terms of the so-called spectrum broadcast structures. These are multipartite quantum states of the system...
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Reexamination of the decoherence of spin registers
PublicationWe revisit the decoherence process of a multiqubit register interacting with a thermal bosonic bath. We generalize the previous studies by considering not only the register’s behavior but also a part of its environment. In particular, we are interested in information flow from the register to the environment, which we describe using recently introduced multipartite quantum state structures called spectrum broadcast structures....
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Design analysis of Tesla micro-turbine operating on a low-boiling medium
PublicationThis paper presents results of the design analysis of a Tesla bladeless turbine intended for a co-generating micro-power plantof heat capacity 20 kW, which operates in an organic Rankine cycle on a low-boiling medium. Numerical calculations of flowin several Tesla turbine models were performed for a range of design parameters. Results of investigations exhibit interestingfeatures in the distribution of flow parameters within the...
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A hybrid approach to optimization of radial inflow turbine with principal component analysis
PublicationEnergy conversion efficiency is one of the most important features of power systems as it greatly influences the economic balance. The efficiency can be increased in many ways. One of them is to optimize individual components of the power plant. In most Organic Rankine Cycle (ORC) systems the power is created in the turbine and these systems can benefit from effective turbine optimization. The paper presents the use of two kinds...
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Multi-objective optimization of the ORC axial turbine for a waste heat recovery system working in two modes: cogeneration and condensation
PublicationDue to the demand of the district heating network and electric power grid ORC turbines can operate in the condensation and cogeneration modes. This approach requires the design of an expander which is characterized by high efficiency in each mode of operation. The paper is devoted to a multi-objective efficiency optimization of a one stage axial ORC turbine working on MM (Hexamethyldisiloxane). An Implicit Filtering algorithm (IF)...
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Effect of Functionalization of Carbon Nanotubes with Psychosine on Complement Activation and Protein Adsorption
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Multicentre, Prospective Observational Study of Pegfilgrastim Primary Prophylaxis in Patients at High Risk of Febrile Neutropenia in Poland: PROFIL Study
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Assessment of the cryoprotectant concentration inside a bulky organ for cryopreservation using X-ray computed tomography
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A turbine based domestic micro ORC system
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Design and numerical study of turbines operating with MDM as working fluid
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Experimental investigation of performance and emission characteristics of a miniature gas turbine supplied by blends of kerosene and waste tyre pyrolysis oil
PublicationFossil fuels are non-renewable sources of energy that could be depleted in the near future, giving rise to amajor energy crisis. Scientists from all over the world are working on new technologies to produce fuelnot only from renewable sources but also from waste. This article is concerned with: (i) waste tyremanagement by means of the pyrolysis process, (ii) investigation of physico-chemical parameters ofwaste tyre pyrolysis oil...
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A comparative study of pentanol (C5 alcohol) and kerosene blends in terms of gas turbine engine performance and exhaust gas emission
PublicationThe growing demand for sustainable and clean energy sources provides the incentive for the development of alternative fuels. Simultaneously, the development of gas turbine technologies with flexible fuel supply systems enables the use of alternative non-fossil fuels that can play key roles in contributing to global efforts in meeting emissions targets. This paper presents the current state of knowledge on the production and potential...
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Absorbable sutures in general surgery – review, available materials, and optimum choices
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Organic Rankine cycle turbogenerator cooling – Optimization of the generator water jacket heat exchange surface
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Optimization of an axial turbine for a small scale ORC waste heat recovery system
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Impact of rotor geometry optimization on the off-design ORC turbine performance
PublicationThe paper describes the method of CFD based Nelder-Mead optimization of a 10 kW single-stage axial turbine operating in an ORC system working on R7100. The total-to-static isentropic efficiency is defined as an objective function. Multi-point linear regression is carried out to determine the significance of the objective function arguments and to pick up the set of particular variables and characteristic quantities (e.g. flow angles)...
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Chemically Selective Alternatives to Photoferroelectrics for Polarization-Enhanced Photocatalysis: The Untapped Potential of Hybrid Inorganic Nanotubes
PublicationLinear-scaling density functional theory simulation of methylated imogolite nanotubes (NTs) elucidates the interplay between wall-polarization, bands separation, charge-transfer excitation, and tunable electrostatics inside and outside the NT-cavity. The results suggest that integration of polarization-enhanced selective photocatalysis and chemical separation into one overall dipole-free material should be possible.
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The Brain of the city
PublicationIn order to highlight the characteristics of the West End of Wrocław, we conducted a site analysis. Using the strengths of the site, we were able to create a unique concept of the district while minimizing the impacts of weaknesses by design. The purpose of redesigning the West End of Wrocław is to attract new people to the district through the transformation of an identity. Initially, we conducted a SWOT analysis to identify the...
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Lampa
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Lampa
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Wielofunkcyjna kompaktowa lampa uliczna
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Wielofunkcyjna kompaktowa lampa oświetleniowa
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High-dose chemotherapy with autologous stem cell transplantation is an effective treatment of primary refractory Hodgkin's disease. Retrospective study of the Polish Lymphoma Research Group
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The ONETEP linear-scaling density functional theory program
PublicationWe present an overview of the ONETEP program for linear-scaling density functional theory (DFT) calculations with large basis set (planewave) accuracy on parallel computers. The DFT energy is computed from the density matrix, which is constructed from spatially localized orbitals we call Non-orthogonal Generalized Wannier Functions (NGWFs), expressed in terms of periodic sinc (psinc) functions. During the calculation, both the...