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Wyniki wyszukiwania dla: GEOMETRIC LAY-OUT
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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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PANTOGRAPH AS AN EXAMPLE OF THE USE OF GEOMETRIC TRANSFORMATIONS IN CONSTRUCTING OF OLD DRAWING INSTRUMENTS = PANTOGRAF JAKO PRZYKŁAD ZASTOSOWANIA PRZEKSZTAŁCEŃ GEOMETRYCZNYCH W KONSTRUOWANIU DAWNYCH PRZYRZĄDÓW KREŚLARSKICH
PublikacjaThe article describes the pantograph, considered to be the ancestor of today's photocopier. This instrument draws the copies, enlarges or reduces any figure. The author presents its genesis, the scope of application in the past, explains the structure and geometrical transformations used during its action. Based on a specific example, the work illustrates practical application of geometry in the past inventions for designing.
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Balkan Journal of Geometry and Its Applications
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INTERNATIONAL JOURNAL OF COMPUTATIONAL GEOMETRY & APPLICATIONS
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SIAM Journal on Applied Algebra and Geometry
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Journal of Mathematical Physics Analysis Geometry
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Symmetry Integrability and Geometry-Methods and Applications
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JOURNAL OF GEOMETRIC ANALYSIS
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Stability of steel plate girder with alternative web geometry
Dane BadawczeThe main aim of this study is to determine the influence of an alternative geometry of plate girder cross-section on web stability. The proposed modification of geometry consists in application of a variable web thicknesses along its height in order to reduce the number of transverse and longitudinal stiffeners along the length of the plate girder....
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Evaluation of the impact of geometry and plastic deformation on the stray magnetic field around the bone shaped sample
PublikacjaInfluence of two factors: the variable cross-section and the localized plastic deformation, which affect the stray magnetic field profile of a ferromagnetic sample have been studied. Evaluation of an effect size is based on the analysis of the stray magnetic field component which is tangential to the longest dimension of a sample. However, in order to describe the nature of the stray magnetic field, the normal component (perpendicular...
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GDAŃSK UNIVERSITY OF TECHNOLOGY - A CONTINUATOR OF THE LVIV SCHOOL OF ARCHITECTS' EDUCATION ON THE EXAMPLE OF DESCRIPTIVE GEOMETRY TEACHING
PublikacjaThe new theory at the time was descriptive geometry, quickly reached the Polish lands. Her first lecture was held at the Warsaw School of Artillery and Engineering in 1809-1812, by a French teacher Jan Joachim Livet (1809-12). The new discipline was quickly adopted in all major centers of Polish science at that time, which include university cities - Warsaw, Krakow, Vilnius and the Krzemienieckie High School, which represent high...
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Experimental investigations on heat transfer enhancement in shell coil heat exchanger with VARIABLE Baffles GEOMETRY
PublikacjaThe paper presents the possibility of using passive intensification of heat transfer in the form of baffles to increase the energy efficiency of the shell and coil heat exchanger. The experiment was carried out by using a modular coil heat exchanger in the form of an electric heater. Water was used as a working fluid with constant thermal-flow parameters at the inlet of the module. It should be noted that experiments were made...
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Effect of housing geometry on the performance of Chemcatcher passive sampler for the monitoring of hydrophobic organic pollutants in water
PublikacjaZaprojektowano nową obudowę próbnika typu Chemcatcher, tzw. próbnik typu Chemcatcher drugiej generacji. Większość badań kalibracyjnych przeprowadzono stosując próbnik typu Chemcatcher pierwszej generacji. Dlatego zbadano wpływ obudowy próbnika typu Chemcatcher na jego działanie.
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Self-assembly of vertically oriented graphene nanostructures: multivariate characterisation by Minkowski functionals and fractal geometry
PublikacjaThe enormous self-assembly potential that graphene and its derived layered materials offer for responding to the contemporary environmental challenges has made it one of the most investigated materials. Hence, tuning its extraordinary properties and understanding the effect at all scales is crucial to tailoring highly customised electrodes. Vertically oriented graphene nanostructures, also known as carbon nanowalls (CNWs), due...
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Selection of circuit geometry for miniaturized microwave components based on concurrent optimization of performance and layout area
PublikacjaThe paper presents a framework for automated EM-driven circuit geometry selection of miniaturized microwave components. Selection of a particular layout is based directly on miniaturization rates achieved for a set of candidate circuit geometries. Size reduction of the considered structures is obtained by replacing their main building blocks (i.e., conventional transmission lines) with slow-wave composite cells and meander lines....
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Evaluation of open drone map toolkit for geodetic grade aerial drone mapping – case study
PublikacjaAn open source tool’s popularity has increased considerably, as well as micro aerial vehicles (MAV) technologies based on open source hardware. An open source software and hardware delivers a wide variety of applications and technology. The world’s most successful open source projects have their roots in the academy, and now its participation includes a wide variety of academic programs and research. Based on open source technology,...
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Novel PCSE-based approach of inclined structures geometry analysis on the example of the Leaning Tower of Pisa
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The Proposal to “Snapshot” Raim Method for Gnss Vessel Receivers Working in Poor Space Segment Geometry
PublikacjaNowadays, we can observe an increase in research on the use of small unmanned autonomous vessel (SUAV) to patrol and guiding critical areas including harbours. The proposal to “snapshot” RAIM (Receiver Autonomous Integrity Monitoring) method for GNSS receivers mounted on SUAV operating in poor space segment geometry is presented in the paper. Existing “snapshot” RAIM methods and algorithms which are used in practical applications...
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EXPERIMENTAL AND NUMERICAL INVESTIGATION ON SPECIMEN GEOMETRY EFFECT ON THE CTOD VALUE FOR VL-E36 SHIPBUILDING STEEL
PublikacjaThere are special cases in the marine industry, where additional material tests, such as the fracture toughness test, must be performed. Additional fracture toughness tests, such as CTOD (Crack Tip Opening Displacement), are typically performed on three-point bend specimens. The dimension that defines all the specimen dimensions is the thickness of the material to be tested. It is recommended by classification societies (e.g. DNVGL)...
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Increasing the Geometrical and Interpretation Quality of Unmanned Aerial Vehicle Photogrammetry Products Using Super-Resolution Algorithms
PublikacjaUnmanned aerial vehicles (UAVs) have now become very popular in photogrammetric and remote-sensing applications. Every day, these vehicles are used in new applications, new terrains, and new tasks, facing new problems. One of these problems is connected with flight altitude and the determined ground sample distance in a specific area, especially within cities and industrial and construction areas. The problem is that a safe flight...
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Thermodynamic and geometrical characteristics of mixed convection heat transfer in the shell and coil tube heat exchanger with baffles
PublikacjaThe article presents passive heat transfer enhancement method in the form of baffles to increase the energy efficiency of the shell coil heat exchanger. Conducted literature review shows that, despite numer- ous studies, there is little work on the intensification of heat transfer at the shell side. Most of the work focuses on the impact of geometrical parameters of the coil itself. This article successfully proves that it is possible...
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R&D of satellite pumps and motors with small geometrical displacement supplied with oil and non-flammable liquids
PublikacjaThe newest construction of satellite motors and self-suction satellite pumps with small geometrical displacement have been described in this article. The characteristics of volumetric and total efficiency of one satellite motor, selected from the series, supplied with oil have been presented. These characteristics have been compared with the orbital motors' characteristics. The remaining specifications of these motors were also...
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Acute Effects of Isometric Conditioning Activity on the Viscoelastic Properties of Muscles and Sprint and Jumping Performance in Handball Players
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Arterial stiffness increases in response to an acute arterial load challenge induced by an isometric handgrip in healthy individuals
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Impact of Geometrical Imperfections on Estimation of Buckling and Limit Loads in a Silo Segment Using the Vibration Correlation Technique
PublikacjaThe paper examines effectiveness of the vibration correlation technique which allows determining the buckling or limit loads by means of measured natural frequencies of structures. A steel silo segment with a corrugated wall, stiffened with cold-formed channel section columns was analysed. The investigations included numerical analyses of: linear buckling, dynamic eigenvalue and geometrically static non-linear problems. Both perfect...
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Assessing the Impact of Chemical Loads from Agriculture Holdings on the Puck Bay Environment with the High-Resolution Ecosystem Model of the Puck Bay, Southern Baltic Sea
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Gut Microbes
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List of initial and final geometries of hybrid organic-inborganic perovskites
Dane BadawczeList of initial and optimized geometries of hybrid organic-inorganic perovskites. Calculations were performed on DFT level of theory. Those results were reported in the Influence of Orientational Disorder on the Optical Absorption Properties of the Hybrid Metal‐Halide Perovskite CH3NH3PbI3 publication. Geometries, HOMO, LUMO, Band gap energies are concatenated...
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Implementation of an Interdisciplinary Educational Path Within "Glassworks in Pomerania Region, Crafts and Industry" Project
PublikacjaTeaching practical skills for work in field during academic lessons for students of geodesy and cartography and students of archaeology is crucial to prepare young students of the profession to participate in apprenticeships, professional realizations excavations and carry out their geodetic services. Another aspect of teaching of future archaeologists and surveyors working with them, is the ability to mutual understanding between...
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WAVE AND CURRENT MODELLING OVER THE BALTIC SEA AND THE GDAŃSK BAY
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Paving the Way for A Sustainable and Efficient SiO2/TiO2 Photocatalytic Composite
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Polish and Chinese civil law perspectives on the principle of good faith
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Sensitivity evaluation of Krakowiec clay based on time-dependent behavior
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Gdansk Bay sea bed sounding and classification of its results
PublikacjaThe main goal of this paper is to describe the results of sounding the Gdansk Bay sea bed by using a SES-2000 Standard parametric sub-bottom profiler. Quality of data obtained during trials depends inter alia on a proper location of transducer array to reduce influence of pitch, roll and heave motions as well as ship self noise (resulting from bubbles due to propeller and flow around hull, vibration generated by main engine and...
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Elastoplastic material law in 6-parameter nonlinear shell theory
PublikacjaWe develop the elastoplastic constitutive relations for nonlinear exact 6-parameter shell theory. A J2-type theory with strain hardening is formulated that takes into account asymmetric membrane strain measures. The incremental equations are solved using implicit Euler scheme with closest point projection algorithm. The presented test example shows the correctness of the proposed approach. Influence of micropolar material parameters...
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Alternative way of the main reinforcement anchorage in reinforced short cantilevers
PublikacjaThe results of the experimental investigation of the reinforced corbels and dapped end beams with steel studs were introduced in the work. The efficiency of this type of the reinforcement was compared with the typical reinforcenet applied in reinforced conctrete construcions.
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Compact broadband multi-way 1:6 power divider
PublikacjaThis paper introduces a design flow of a microstrip multi-way 1:6 power divider incorporating photonic bandgap (PBG) structures. Themethod proposed has enabled the achievement of considerable miniaturization (15%) together with transmission characteristics enhancement(141% bandwidth). Measured results show significant similarity to theoretical characteristics, which proves the attractiveness of presented design methodology.
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Law requirements of explosion proof protection at working with chemical substances
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Soil contamination with geohelminths in children’s play areas in Szczecin, Poland
PublikacjaThe presence of invasive forms of parasites in the soil represents a potential threat to public health, especially for children. The aim of the study was to determine the degree of contamination with geohelminth eggs of soil samples collected from sandpits and playgrounds in the Szczecin area. The findings showed overall prevalence of soil samples contaminated with geohelminth eggs in the soil and sand...
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How non-technological innovation saved the day by using ICT
PublikacjaCertainly, the current pandemic situation provides a lot of evidence of the need for non-technological innovations, both in the area of company organization and marketing. Socio-cultural innovations are not less important. Therefore, the role of non-technological innovation during the COVID-19 pandemic is discussed in the sixth chapter. Innovations supported by digital solutions have become a silent heroes for many companies as...
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Experimental study and numerical simulation of the dynamic penetration into dry clay
PublikacjaTests of dry clay were carried out in a uniaxial stress state using the experimental setup which implements the split Hopkinson pressure bar method. Based on the results of these experiments, the compressive strength of clay was determined as an important element of S.S. Grigoryan’s model of the soil medium. In addition, the parameters of this model are determined from the results of experiments using the modified Kolsky method...
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X-ray and UV Radiation Damage of dsDNA/Protein Complexes
PublikacjaRadiation and photodynamic therapies are used for cancer treatment by targeting DNA. However, efficiency is limited due to physico-chemical processes and the insensitivity of native nucleobases to damage. Thus, incorporation of radio- and photosensitizers into these therapies should increase both efficacy and the yield of DNA damage. To date, studies of sensitization processes have been performed on simple model systems, e.g.,...
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Damage detection in a bolted lap joint using guided waves
PublikacjaThe paper presents the experimental investigation of guided waves application to the condition assessment of prestressed bolted connections and a concept of new quantitative indicator. The main goal of the research was the analysis of the influence of the contact conditions changes to the characteristics of a propagating disturbance. The experimental tests were carried out for a single bolted lap joint. The excitation and acquisition...
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Needs of Older People Attending Day Care Centres in Poland
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A stunning day in hypertension research – Results of ONTARGET, ACCOMPLISH and HYVET
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Conceptual design report of the MPD Cosmic Ray Detector (MCORD)
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Commissioning and performance of the CMS pixel tracker with cosmic ray muons
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High-pressure X-ray Diffraction Study of SrSi2O2N2:Eu2+
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Assessment of a critical area for a give-way ship in a collision encounter
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Dendrimer Structure Diversity and Tailorability as a Way to Fight Infectious Diseases
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