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Search results for: MIKROSKOPIA TUNELOWA AFM/STM
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A Comparison of STI Measured by Direct and Indirect Methods for Interiors Coupled with Sound Reinforcement Systems
PublicationThis paper presents a comparison of STI (Speech Transmission Index) coefficient measurement results carried out by direct and indirect methods. First, acoustic parameters important in the context of public address and sound reinforcement systems are recalled. A measurement methodology is presented that employs various test signals to determine impulse responses. The process of evaluating sound system performance, signals enabling...
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Navigational decision support system during approach manoeuvre in emergency STS transfer operation
PublicationThe paper is concerned with the problem of safe trajectory planning for approaching during emergency STS (Ship to Ship) transfer operation with oil spill. The safe trajectory means that the way points does not cross in the area of the environment with the static and dynamic obstacles and at the same time satisfies ship's stopping and speed deceleration performance. The evolutionary path planning algorithm is used to determine trajectory...
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Artificial intelligence-based imaging analysis of stem cells: a systematic scoping review protocol
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OOA-modified Bi-LSTM network: An effective intrusion detection framework for IoT systems
PublicationCurrently, the Internet of Things (IoT) generates a huge amount of traffic data in communication and information technology. The diversification and integration of IoT applications and terminals make IoT vulnerable to intrusion attacks. Therefore, it is necessary to develop an efficient Intrusion Detection System (IDS) that guarantees the reliability, integrity, and security of IoT systems. The detection of intrusion is considered...
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Using LSTM networks to predict engine condition on large scale data processing framework
PublicationAs the Internet of Things technology is developing rapidly, companies have an ability to observe the health of engine components and constructed systems through collecting signals from sensors. According to output of IoT sensors, companies can build systems to predict the conditions of components. Practically the components are required to be maintained or replaced before the end of life in performing their assigned task. Predicting...
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Approximation of Fractional Order Dynamic Systems Using Elman, GRU and LSTM Neural Networks
PublicationIn the paper, authors explore the possibility of using the recurrent neural networks (RNN) - Elman, GRU and LSTM - for an approximation of the solution of the fractional-orders differential equations. The RNN network parameters are estimated via optimisation with the second order L-BFGS algorithm. It is done based on data from four systems: simple first and second fractional order LTI systems, a system of fractional-order point...
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FEM-based wave propagation modelling for SHM: Certain numerical issues in 1D structures
PublicationThe numerical modelling of structural elements is an important aspect of modern diagnostic systems. However, the process of numerical implementation requires advanced levels of consideration of multiple aspects. Important issues of that process are the positive and negative aspects of solution applied methods. Therefore the aim of this article is to familiarise the reader with the most important aspects related to the process of...
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Effect of bending-torsion on fracture and fatigue life for 18Ni300 steel specimens produced by SLM
PublicationIn this study, different fracture surfaces caused by fatigue failure were generated from 18Ni300 steel produced by selective laser melting (SLM). Hollow round bars with a transverse hole were tested under bending-torsion to investigate the crack initiation mechanisms and fatigue life. Next, the post-failure fracture surfaces were examined by optical profilometer and scanning electron microscope. The focus is placed on the relationship...
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Imaging of graphene surface by means of tapping mode AFM
Open Research DataGraphene [1] is a material consisting of carbon planes with a hexagonal structure. One of the facts of interest from a purely scientific point of view is the very high mobility of electrons in the described material, allowing the study of relativistic effects inside a solid sample. Other features, such as bactericidal activity, make graphene an interesting...
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The AFM micrographs of isotropic etching silicon substrates (111)
Open Research DataThe DataSet contains the atomic force microscope images of isotropic etching silicon substrates (111). The silicon wafers were etched in a mixture of nitric acid, hydrofluoric acid, and acetic acid in the ratio of 40:1:15. The soaking time for the substrates was from 20 to 90 seconds
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High temperature XRD diffraction patterns collected during the reoxidation process of SFM-based compounds
Open Research DataThis dataset contains three file folders for SFM, LSFM (La-doped) and SFMNb (Nb-doped) respectively. Samples were reduced prior to the XRD measurements. The measurements were performed on Philipps X’Pert Pro diffractometer using a high-temperature Anthon Paar HT-1200 oven adapter. Scans were performed each 50 deg. in air. The data in dataset were already...
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Stem-, spraak- en taalpathologie
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Stem Cell Research & Therapy
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International Journal of Stem Cells
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Stem Cells Translational Medicine
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American Journal of Stem Cells
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International Journal of STEM Education
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Current Stem Cell Reports
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World Journal of Stem Cells
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SCM Studies in Communication and Media
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Stem Cell Reviews and Reports
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Open Stem Cell Journal
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European Journal of STEM Education
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INTERNATIONAL JOURNAL OF STD & AIDS
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Chapel at St. Joseph's Church in Gdańsk
PublicationThe subject of this article is the chapel located in the former Gdańsk Carmelite monastery complex. The results of the architectural research carried out in it in 2014–2015 are presented. As a result, the time and purpose of the building’s construction were established. The original appearance and traces of later alterations were also recognised. The recesses found on the longitudinal walls, of similar dimensions, not reaching...
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Systemy automatycznej kontroli wymiarowej mikroziaren ściernych
PublicationPrzedstawiono wyniki badań wymiarów mikroziaren ściernych stosowanych w operacjach docierania. Badania z wykorzystaniem analizatora laserowego poprzedziła analiza mikroskopowa rzutów mikroziaren na płaszczyznę obserwacji. Analizowano wymiary (długość i szerokość) oraz pole powierzchni jego obrazu. Pomiary przeprowadzono na skomputeryzowanym stanowisku, wyposażonym w mikroskop stereoskopowy, kamerę CCD i oprogramowanie MultiScan...
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The bioactivity studies of drug-loaded mesoporous silica-polydimethylsiloxane xerogels using FTIR and SEM/XEDS
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System monitoringu technicznego Hali Sportowo-Widowiskowej "Olivia" w Gdańsku (SMT OLIVIA-2)
PublicationSystem SMT OLIVIA-2 ma za zadanie monitorowanie podstawowych parametrów pracy konstrukcji dachu i w sposób zautomatyzowany sygnalizowanie o jej stanie technicznym. System jest nowatorskim rozwiązaniem technologicznym. Nowością w stosunku do dostępnych na rynku ofert jest w szczególności rozbudowany moduł obliczeniowy bazujący na szczegółowym modelu teoretycznym dachu oraz zintegrowany z nim system ekspercki.
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A test of construct isomorphism of the Belief in a Zero-Sum Game scale: A multilevel 43-nation study
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WPŁYW PARAMETRÓW PROCESU SBM NA DYSTRYBUCJĘ TWORZYWA W BUTELKACH PET – PRZEGLĄD LITERATURY
PublicationZ mechanicznego punktu widzenia profil grubości butelek PET jest uwarunkowany mechaniczno-cieplną odpowiedzią tworzywa rozdmuchiwanej preformy na zadane parametry procesu SBM. Z mikroskopowego punktu widzenia na mechaniczne i termiczne właściwości butelek CSD z PET największy wpływ mają procesy orientowania i krystalizowania tworzywa. Z technologicznego punkty widzenia profil grubości butelek PET po procesie produkcji metodą SBM...
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Wpływ parametru WSR procesu SBM na jakość estetyczną wytwarzanych pojemników z PET
PublicationAbstrakt w materiałach konferencyjnych konferencji Młodzi dla techniki 2015
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Determination Of Gas Mixture Components Using Fluctuation Enhanced Sensing And The LS-SVM Regression Algorithm
PublicationThis paper analyses the effectiveness of determining gas concentrations by using a prototype WO3 resistive gas sensor together with fluctuation enhanced sensing. We have earlier demonstrated that this method can determine the composition of a gas mixture by using only a single sensor. In the present study, we apply Least-Squares Support-Vector-Machine-based (LS-SVM-based) nonlinear regression to determine the gas concentration...
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Badanie składu chemicznego wraz z obrazowaniem powierzchni próbek przy użyciu SEM/EDX
PublicationWyniki analizy degradacji pieca pracującego w warunkach próżniowych, w zakresie powyżej 1200 st.C.
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Badanie składu chemicznego wraz z obrazowaniem powierzchni próbek przy użyciu SEM/EDX
PublicationPięć niezależnych analiz materiałów bimetalicznych i innych elementów produkcyjnych, bazujących na analizie mikrograficznej oraz składu chemicznego z oceną przyczyn zachodzenia obserwowanych procesów
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Method of sum of power losses as a way for determining the ki coefficients of energy losses in hydraulic motor
PublicationThis paper shows application of the method of sum of power losses to determining energy losses which occur in hydraulic rotary motor in situation when not all laboratory data are at one’s disposal or when no use is made of data contained in catalogue charts. The method makes it possible to determine the coefficients ,ki , of energy losses occurring in the motor. The method of sum of power losses is based on the approach proposed...
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Klasyfikator SVM w zastosowaniu do synchronizacji sygnału OFDM zniekształconego przez kanał wielodrogowy
PublicationW pracy przedstawiono analizę przydatności klasyfikatora SVM bazującego na uczeniu maszynowym do estymacji przesunięcia czasowego odebranego symbolu OFDM. Przedstawione wyniki wykazują, że ten klasyfikator potrafi zapewnić synchronizację dla różnych kanałów wielodrogowych o wysokim poziomie szumu. Eksperymenty przeprowadzone w Matlabie z użyciem modeli modulatora i demodulatora wykazały, że w większości przypadków klasyfikator...
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Wystawa wirtualna efektów pracy studentów w sem. 2. na przedmiocie Projektowanie Architektoniczne.
PublicationWystawa wirtualna efektów pracy studentów w sem. 2. na przedmiocie Projektowanie Architektoniczne. Wystawa została wykonana przez prowadzących, w ścisłej kooperacji ze studentami (którzy byli odpowiedzialni za właściwą prezentację swojej pracy semestralnej w stworzonej przestrzeni wirtualnej Holu Głównego Politechniki Gdaskiej) przy pomocy oprogramowania SketchUp oraz ShapeSpark. Do stycznia 2021 wystawę wirtualną “zwiedziło”...
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Anna Dołęga prof. dr hab. inż.
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Study of particle - bubble interaction using atomic force microscopy - current possibilities and challenges
PublicationBadania oddziaływań pomiędzy cząstkami mineralnymi i pęcherzykami powietrza są kluczowe do zrozumienia przebiegu flotacji. Wykorzystanie mikroskopii sił atomowych (AFM) i techniki próbnika koloidalnego umożliwia pomiar takich oddziaływań.
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Acalabrutinib in relapsed or refractory mantle cell lymphoma (ACE-LY-004): a single-arm, multicentre, phase 2 trial
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Implementation of Extended Kalman Filter with Optimized Execution Time for Sensorless Control of a PMSM Using ARM Cortex-M3 Microcontroller
PublicationThis paper addresses the implementation and optimization of an Extended Kalman Filter (EKF) for the Permanent Magnet Synchronous Motor (PMSM) sensorless control using an ARM Cortex-M3 microcontroller. A various optimization levels based on arithmetic calculation reduction was implemented in ARM Cortex-M3 microcontroller. The execution time of EKF estimator was reduced from 260.4 μs to 37.7 μs without loss of accuracy. To further...
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Mechanical lithography in a polymer substrate using AFM in contact mode
Open Research DataMechanical lithography in a polymer substrate. Contact mode. NTEGRA Prima (NT-MDT) device. NSG 01 probe.
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The morphology of vanadate glasses containing BaTiO3 measured with the use of AFM
Open Research DataThe morphology of vanadate glasses doped with BaTiO3 was measured with the use of AFM method. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured...
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Au nanoparticles identifiction with the use of AFM Volta potential mapping
Open Research DataThe specific physical, chemical and electrochemical electrical properties of gold nanoparticles have led to their extensive use as high-performance chemical and biochemical sensors. The described properties relate to surface plasmon resonance, fluorescence quenching or enhancement, high electrical conductivity and light scattering. The described nanoparticles...
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The influence of external interference on AFM imaging, the use of a protective helmet
Open Research DataThis collection is of purely practical importance, showing how the presence of external disturbances can adversely affect the quality of imaging with an atomic force microscope. For this reason, it is also advisable to provide a link to a workshop-like study [1] as well as a huge number of commercial solutions available after entering the keyword "AFM...
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Validation of result of STM probe fabrication
Open Research DataThe scanning tunneling microscope [1] is a powerful research tool that allows, among other things, to obtain images with atomic resolution. A serious limitation of the described microscope is its limited applicability relating to conductive and semiconductor materials and the reproducibility of measurements depending on the preparation of the measuring...
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Ocena możliwości transmisyjnych systemu z wielodostępem kodowym OCDMA w pasywnej optycznej sieci dostępowej.
PublicationSzerokopasmowa sieć dostępowa, wykonana jako optyczna sieć pasywna (PON), wymaga mechanizmu wielodostępu w warstwie fizycznej. Wielodostęp z rozdziałem kodowym OCDMA jest jedną z możliwych technik. Przedmiotem referatu jest analiza wpływu parametrów ikonfiguracji systemu OCDMA na jego własności na poziomie warstwy fizycznej. Wykorzystany komputerowy model symulacyjny pozwala na prognozowanie ograniczeń transmisji w warunkach rzeczywistych...
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Chirp-rate estimation of FM signals in the time-frequency domain
PublicationNovel dynamic representations of a complex signal in the time-frequency domain including: a channelized instantaneous complex frequency (CICF), a complex local group delay (CLGD) and a channelized instantaneous chirp-rate (CICR) are introduced. The proposed approach is based on the use of the gradient of the short-time Fourier transform complex phase. An interpretation of the newly-introduced distributions especially of the CICR...
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Postępy w badaniach korelacji pomiędzy morfologią i właściwościami segmentowych poliuretanów.
PublicationW pracy opisano postępy w badaniach mikroskopowych poliuretanów segmentowych. Przedmiotem omówienia były mikroskopia optyczna polaryzacyjna, mikroskopia optyczna konfokalna, mikroskopia elektronowa, mikroskopia sił atomowych oraz połączone badania mikroskopowe z innymi metodami (spektometria mikroramanowska, mikroskopia termiczna). Za pomocą tych metod zinterpretowano morfologie poliestrouretanów otrzymywanych w technologii reaktywnego...
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The Mediational Role of Relational Psychological Contract in Belief in a Zero-Sum Game and Work Input Attitude Dependency
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