Search results for: SFEM

• SFEM Analysis of Beams with Scaled Lengths including Spatially Varying and Cross-Correlated Concrete Properties

  Publication

  • E. Korol

  - Materials - Year 2022

  This paper presents the results obtained for plain concrete beams under four-point bending with spatially varying material properties. Beams of increasing length but constant depth were analyzed using the stochastic finite element method. Spatial fluctuation of a uniaxial tensile strength, fracture energy and elastic modulus was defined within cross-correlated random fields. The symmetrical Gauss probability distribution function...

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• Cellular Interactions in the Intestinal Stem Cell Niche

  Publication

  • A. Pastuła
  • J. Marcinkiewicz

  - ARCHIVUM IMMUNOLOGIAE ET THERAPIAE EXPERIMENTALIS - Year 2019

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• CELL STEM CELL

  Journals

  ISSN: 1934-5909 , eISSN: 1875-9777

• CLONING AND STEM CELLS

  Journals

  ISSN: 1536-2302

• Stem Cell Reports

  Journals

  ISSN: 2213-6711

• Stem Cell Investigation

  Journals

  ISSN: 2306-9759

• Journal of Stem Cells

  Journals

  ISSN: 1556-8539

• Stem Cell Research

  Journals

  ISSN: 1873-5061 , eISSN: 1876-7753

• Individual entrepreneurial orientation: comparison of business and STEM students

  Publication

  • M. Licznerska
  • T. Nikitina
  • I. Ozoliņa-Ozola
  • I. Lapina

  - Education and Training - Year 2022

  Abstract Purpose – The purpose of this study is to determine whether there are differences in Individual Entrepreneurial Orientation (IEO) between students who are doing their major in business studies and the ones whose areas of study are science, technology, engineering, and mathematics (STEM). Design/methodology/approach – The current research investigates which factors and components contribute to EO orientation development...

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• COVID-19: Plasma Therapy and Stem Cell Therapy

  Publication

  • A. Kallingal

  - Year 2021

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• Mobilization of Stem and Progenitor Cells in Septic Shock Patients

  Publication

  • T. Skirecki
  • M. Mikaszewska-Sokolewicz
  • M. Godlewska
  • B. Dołęgowska
  • J. Czubak
  • G. Hoser
  • J. Kawiak
  • U. Zielińska-Borkowska

  - Scientific Reports - Year 2019

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• Cancer stem cells in drug resistance and drug screening: can we exploit the cancer stem cell paradigm in search for new antitumor agents?

  Publication

  • M. Sabisz
  • A. Składanowski

  - Year 2011

  Praca przedstawia przegląd literatury dotyczącej hipotezy komórek pierwotnych nowotworu, w szczególności w ich oporności na istniejące terapie. Dyskutowane jest także zagadnienie możliwości wykorzystania wiedzy o tych komórkach do konstrukcji nowych testów do badań przesiewowych in vitro w celu poszukiwania nowych leków przeciwnowotworowych.

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• Fulbright STEM Impact Award

  Events

  22-03-2022 11:00 - 22-03-2022 12:30

  Spotkanie online dla zainteresowanych udziałem w programie Fulbrighta: STEM Impact Award.

• Modal FEM Analysis of Ferrite Resonant Structures

  Publication

  • M. Warecka
  • G. Fotyga
  • P. Kowalczyk
  • R. Lech
  • M. Mrozowski
  • A. Pacewicz
  • B. Salski
  • J. Krupka

  - IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS - Year 2022

  The finite-element method (FEM) is applied for modal analysis of ferrite-loaded spherical resonators. To improve the efficiency of the numerical calculations, the body-of-revolution (BOR) technique is utilized. Due to the frequency-dependent ferrite permeability, FEM leads to a nonlinear eigenvalue problem that is challenging to solve. To this end, Beyn’s method is proposed. The effectiveness of the proposed approach is confirmed...

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• Macromodels for efficient FEM simulations of waveguides and resonators

  Publication

  • G. Fotyga
  • K. Nyka
  • Ł. Kulas

  - Year 2010

  This paper introduces a novel technique for enhancing the efficiency of the finite element method (FEM) by incorporating special modules, called macromodels, into the standard eigenvalue formulation. The number of unknowns in the separated macromodel subdomain can be significantly reduced by orthogonal projection, using the efficient nodal order reduction algorithm. The idea of macromodels implementation is demonstrated on a simple...

• FEM approach to modeling of an irregular trabecular structure

  Publication

  • W. Wojnicz
  • E. Wittbrodt

  - Year 2018

  The aim of the study is elaboration of a method for creating irregular scaffolds that can be used to model the behaviour of trabecular bone placed in the proximal epiphysis of the femur. The scope of the study encompasses creating six numerical models of irregular scaffolds (two solid irregular scaffolds, two shell irregular scaffolds and two shell irregular scaffolds with fortification) and performing numerical analysis of the...

• CFD and FEM model of an underwater vehicle propeller

  Publication

  • T. Chruściel
  • E. Ciba
  • J. Dopke

  - Polish Maritime Research - Year 2014

  During the project execution of design and optimization the Remotely Operated Vehicle (ROV) research on its propulsion has been carried out. The entire project was supported by CFD and FEM calculations, which taking into account the characteristics of underwater vehicle. One of the tasks was to optimize the semi-open duct for horizontal propellers, which provided propulsion and controllability in horizontal plane. In order to...

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• Study of displacements of a bridge abutment using FEM

  Publication

  • M. Wymysłowski
  • Z. Kurałowicz

  - Studia Geotechnica et Mechanica - Year 2016

  Steel sheet piles are often used to support excavations for bridge foundations. When they are left in place in the permanent works, they have the potential to increase foundation bearing capacity and reduce displacements; but their presence is not usually taken into account in foundation design. In this article, the results of finite element analysis of a typical abutment foundation, with and without cover of sheet piles, are presented...

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• A two-scale (FEM-DEM) approach for concrete

  Publication

  • M. Nitka
  • Ł. Skarżyński
  • J. Tejchman

  - Year 2013

  Artykuł omawia dwu-skalowe podejście do betonu przy wykorzystaniu modelu Mes i DEM. Metodę elementów skończonych zastosowano na poziomie makro. Na poziomie mikro zastosowano metodę elementów dyskretnych. Macierz sztywności wyznaczono na podstawie tensora naprężeń wyznaczonego w skali mikro. Wyniki numeryczne dwusalowe porównano z wynikami dyskretnymi dla całego obszaru.

• Stem-, spraak- en taalpathologie

  Journals

  ISSN: 0924-7025

• Stem Cell Research & Therapy

  Journals

  ISSN: 1757-6512

• International Journal of Stem Cells

  Journals

  ISSN: 2005-3606 , eISSN: 2005-5447

• Stem Cells Translational Medicine

  Journals

  ISSN: 2157-6564 , eISSN: 2157-6580

• American Journal of Stem Cells

  Journals

  ISSN: 2160-4150

• International Journal of STEM Education

  Journals

  ISSN: 2196-7822

• Current Stem Cell Reports

  Journals

  eISSN: 2198-7866

• World Journal of Stem Cells

  Journals

  ISSN: 1948-0210

• Stem Cell Reviews and Reports

  Journals

  ISSN: 1550-8943 , eISSN: 1558-6804

• Open Stem Cell Journal

  Journals

  eISSN: 1876-8938

• European Journal of STEM Education

  Journals

  eISSN: 2468-4368

• Curriculo sem Fronteiras

  Journals

  ISSN: 1645-1384

• Flow cytometric sorting and analysis of human epidermal stem cell candidates

  Publication

  • M. Pikuła
  • K. Kondej
  • J. Jaśkiewicz
  • P. Trzonkowski
  • J. Skokowski

  - CELL BIOLOGY INTERNATIONAL - Year 2010

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• DEM-FEM model of highly saturated soil motion due to seepage force

  Publication

  • L. Bierawski
  • S. Maeno

  - JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING-ASCE - Year 2006

  Artykuł poświęcono nowej propozycji rozwiązania problemu modelowania zjawiska transportu, które występuje wewnątrz wysoko-nawodnionego gruntu ziarnistego na skutek ciśnienia spływowego. Teoria oparta została na połączeniu metody elementów skończonych (FEM - Finite Element Method) - rozwiązania równań poro-elastycznych oraz metody poszczególnych elementów (DEM - Distinct Element Method), które dały podwójny model numeryczny. FEM...

• SEM images of SFM, LSFM and SFMNb in as-prepared state and reduced

  Open Research Data

  embargo

  • A. Ducka
  • B. Bochentyn

  - series: SFM

  This dataset contains SEM images taken for pristine strontium ferrite molybdate, as well as ones doped with lanthanum or niobium. Materials were characterized in powder, under high vacuum in secondary electron mode. The images are divided into folders for as-prepared samples and reduced (H2, 800 deg, 4 h) ones. 

• Torsional Stability Assessment of Columns Using Photometry and FEM

  Publication

  • K. Wierzbicki
  • P. Szewczyk
  • W. Paczkowski
  • T. Wróblewski
  • S. Skibicki

  - Buildings - Year 2020

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• FEM modelling of screw displacement pile interaction with subsoil

  Publication

  • P. Więcławski
  • A. Krasiński

  - Archives of Civil Engineering - Year 2023

  Predicting the-settlement characteristics of piles is an important element in the designing of pile foundations. The most reliable method in evaluating pile-soil interaction is the static load test, preferably performed with instrumentation for measuring shaft and pile base resistances. This, however, is a mostly post-implementation test. In the design phase, prediction methods are needed, in which numerical simulations play an...

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• Young’s modulus distribution in the FEM models of bone tissue

  Publication

  • K. Mazur
  • L. Dąbrowski

  - Year 2013

  This paper presents how differences of Young’s modulus in adjacent finite elements typical for organic materials such as bone tissue, influence stress calculating. Emphasizing high computational cost of variable Young’s modulus in parts of the model, where the number of finite elements has been raised, the authors wants to prove that new model of finite element which has variable Young’s modulus in its volume needs to be created....

• Ultrasonic Tomography of Brick Columns Based on FEM Calculations

  Publication

  • M. Zielińska
  • M. Rucka

  - IOP Conference Series: Materials Science and Engineering - Year 2019

  Ultrasonic tomography is one of the most developed method of non-destructive testing. Despite being used mainly in medicine, it is becoming more and more popular as a method for monitoring of structural elements. It allows to examine the internal structure and technical condition of the tested element. This paper investigates the influence of crosssectional geometry on an obtained tomographic image. Wave propagation signals were...

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• FEM simulation of laminate failure in the three point bending

  Publication

  • A. Sabik

  - Year 2018

  The paper presents a FEM simulation of failure of laminate subjected to the three point bending. The numeri-cal model is based on the equivalent single layer approach with 6-paramater non-linear shell theory kinematics. It is implemented in the non-commercial FEM code. The failure initiation is detected with the use of Tsai-Wu criterion. After the failure onset the progressive failure process is modelled through the appropriate...

• From chemoresistance to cancer stem cells: the case of BRCP/ABCG2 half transporter

  Publication

  • A. Składanowski

  - Acta Biochimica Polonica - Year 2007

  Ludzkie białko ABCG2 jest pompą typu ABC tworzącą homodimery i aktywnie transportującą leki i inne substraty naturalne i syntetyczne. Nadekspresja tego białko prowadzi do oporności na leki przeciwnowotworowe. Białko ABCG2 występuje w wielu formach zmutowanych, różniących się własnościami substratowymi, stąd istotne dla oporności na leki jest jaka forma genu i białka ABCG2 ulega nadekspresji w komórce. Ostatnie badania wskazują,...

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• The Use of Stem Cells as a Potential Treatment Method for Selected Neurodegenerative Diseases: Review

  Publication

  • E. Cecerska-Heryć
  • M. Pękała
  • N. Serwin
  • M. Gliźniewicz
  • B. Grygorcewicz
  • A. Michalczyk
  • R. Heryć
  • M. Budkowska
  • B. Dołęgowska

  - CELLULAR AND MOLECULAR NEUROBIOLOGY - Year 2023

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• Evaluation of Open Source SIEM for Situation Awareness Platform in the Smart Grid Environment

  Publication

  • R. Leszczyna
  • M. Wróbel

  - Year 2015

  The smart grid as a large-scale system of systems has an exceptionally large surface exposed to cyber-attacks, including highly evolved and sophisticated threats such as Advanced Persistent Threats (APT) or Botnets. When addressing this situation the usual cyber security technologies are prerequisite, but not sufficient. The smart grid requires developing and deploying an extensive ICT infrastructure that supports significantly...

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• Caffeine Inhibits Differentiation Of Lung Cancer Stem Cells By Modulating Their Respiratory Metabolism

  Publication

  • M. Serocki
  • M. Sabisz
  • A. Składanowski

  - Acta Biochimica Polonica - Year 2011

  It is ell established that many tumor types contain a fraction of cells, with stem cell-like properties, called cancer stem cells (CSCs), that are resistant to apoptosis induced by therapeutic agents. The presence of CSCs may explain why a standard anticancer treatment, that eliminates only differentiated cancer cells, does not lead to cancer cure.We previously showed the existence of caffeine-sensitive mechanism that controls...

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• Elastoplastic nonlinear FEM analysis of FGM shells of Cosserat type

  Publication

  • S. Burzyński
  • J. Chróścielewski
  • K. Daszkiewicz
  • W. Witkowski

  - COMPOSITES PART B-ENGINEERING - Year 2018

  The paper is a continuation of [1] where the formulation of the elastic constitutive law for functionally graded materials (FGM) on the grounds of nonlinear 6-parameter shell theory with the 6th parameter (the drilling degree of freedom) was presented. Here the formulation is extended to the elasto-plastic range. The material law is based on Cosserat plasticity and employs the well-known Tamura-Tomota-Ozawa (TTO) [2] mixture...

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• FEM ANALYSIS AND EXPERIMENTAL TESTS OF RIGID RISER HANGING SYSTEM

  Publication

  • A. Olszewski
  • M. Wodtke
  • A. Wójcikowski

  - Polish Maritime Research - Year 2018

  The article presents the analysis, project, and experimental examination of an original rigid riser for Coil Tubing Pipes. The principle of riser operation is based on the use of friction forces. The research included the FEM analysis of the designed riser, calculations of the required bolt tensions, and checking the effect of the clamping force on stress distribution in the pipeline. The results of computer simulation were verified...

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• Electromagnetic Simulation with 3D FEM for Design Automation in 5G Era

  Publication

  • Ł. Balewski
  • M. Baranowski
  • M. Jasiński
  • A. Lamęcki
  • M. Mrozowski

  - ZTE COMMUNICATIONS - Year 2020

  Electromagnetic simulation and electronic design automation (EDA) play an important role in the design of 5G antennas and radio chips. The simulation challenges include electromagnetic effects and long simulation time and this paper focuses on simulation software based on finite-element method (FEM). The state-of-the-art EDA software using novel computational techniques based on FEM can not only accelerate numerical analysis, but...

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• Prediction of the properties of PVD/CVD coatings with the use of FEM analysis

  Publication

  • A. Śliwa
  • J. Mikuła
  • K. Gołombek
  • T. Tański
  • W. Kwaśny
  • M. Bonek
  • Z. Brytan

  - Applied Surface Science - Year 2016

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• FEM strength analysis of sandwich panels for ship structure applications

  Publication

  • M. Augustyniak
  • G. Porembski

  - Polish Maritime Research - Year 2006

  W publikacji zaprezentowano wyniki analizy numerycznej stalowego panelu sandwich obciążonego siłami ściskającymi wzdłuż laserowo spawanych usztywnień. Przedstawiono sposób modelowania, pokazano i przedyskutowano uzyskane rezultaty.

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• FEM modeling of structures based on close range digital photogrammetry

  Publication

  • J. Armesto
  • I. Lubowiecka
  • C. Ordonez
  • F. Rial

  - AUTOMATION IN CONSTRUCTION - Year 2009

  Praca dotyczy metodologii przygotowania modelu konstrukcji istniejącej do analizy mechanicznej metodą element ow skończonych. MOdelowanie geometrii budowli jest oparte na danych pozyskanych z pomiarów fotogrametrycznych. Praca wskazuje na możliwości oraz efektywność zastosowania metod optometrycznych w rewitalizacji budowli zabytkowych, an przykładzie modelu dachu drewnianego.

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• VOF-DEM-FEM combined model of the reef breakwater collapse

  Publication

  • S. Maeno
  • L. Bierawski
  • W. Magda
  • M. Ogawa

  - COASTAL ENGINEERING JOURNAL - Year 2009

  Zespolony model numeryczny (metoda modelowania przepływu ze swobodną powierzchnią rozdziału faz ciekłej i gazowej w siatce nieruchomej (ang. Volume of Fluid - VOF, metoda elementów dyskretnych (ang. Distinct Element Method, metoda elementów skończonych (MES)) został wykorzystany do zbadania odkształceń falochronu narzutowego i jego piaszczystego podłoża w wyniku oddziaływania falowania powierzchniowego. Wyniki analizy numerycznej...

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