Wyniki wyszukiwania dla: POLYGLYCEROL-BASED POLYOL

• Journal of Gender-Based Violence

  Czasopisma

  ISSN: 2398-6808 , eISSN: 2398-6816

• BMJ Evidence-Based Medicine

  Czasopisma

  ISSN: 2515-446X , eISSN: 2515-4478

• An agent-based approach to ANN training

  Publikacja

  • I. Czarnowski
  • P. Je¸drzejowicz
  • I. Czarnowski

  - KNOWLEDGE-BASED SYSTEMS - Rok 2006

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• Marek Adamowicz dr hab. inż.

  Osoby

  Katedra Automatyki Napędu Elektrycznego i Konwersji Energii

  Stopień naukowy doktora uzyskał w 2008 r. na Wydziale Elektrotechniki i Automatyki Politechniki Gdańskiej. W latach 2005 – 2011 pracował na Akademii Morskiej w Gdyni. W 2010 r. jako laureat programu NCBR LIDER wybrał Wydział Elektrotechniki i Automatyki Politechniki Gdańskiej jako jednostkę realizującą swój projekt z zakresu szerokopasmowych przyrządów półprzewodnikowych i ich zastosowań w elektrowniach wiatrowych. Od 2011 roku...

• Evidence-based Complementary and Alternative Medicine

  Czasopisma

  ISSN: 1741-427X , eISSN: 1741-4288

• Project and problem-based learning (PPBL): wprowadzenie

  Wydarzenia

  14-12-2023 09:00 - 14-12-2023 12:00

  Zapraszamy na warsztaty, na których m.in. zrozumiesz założenia metody pracą projektu w oparciu o rozwiązywanie realnego problemu, poznasz etapy pracy zespołu metodą projektu oraz rolę nauczyciela i studentów w PPBL.

• Rapid Design Centering of Multi-Band Antennas Using Knowledge-Based Inverse Models and Response Features

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - KNOWLEDGE-BASED SYSTEMS - Rok 2022

  Accounting for manufacturing tolerances as well as uncertainties concerning operating conditions and material parameters is one of the important yet often neglected aspects of antenna development. Appropriate quantification of uncertainties allows for estimating the fabrication yield but also to carry out robust design (e.g., yield maximization). For reliability reasons, statistical analysis should be executed at the accuracy level...

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• Optimization-Based Robustness Enhancement of Compact Microwave Component Designs with Response Feature Regression Surrogates

  Publikacja

  • A. Pietrenko-Dąbrowska
  • S. Kozieł

  - KNOWLEDGE-BASED SYSTEMS - Rok 2022

  The ability to evaluate the effects of fabrication tolerances and other types of uncertainties is a critical part of microwave design process. Improving the immunity of the device to parameter deviations is equally important, especially when the performance specifications are stringent and can barely be met even assuming a perfect manufacturing process. In the case of modern miniaturized microwave components of complex topologies,...

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• Low-Cost and Precise Automated Re-Design of Antenna Structures Using Interleaved Geometry Scaling and Gradient-Based Optimization

  Publikacja

  • A. Pietrenko-Dąbrowska
  • S. Kozieł

  - KNOWLEDGE-BASED SYSTEMS - Rok 2024

  Design of contemporary antennas is an intricate endeavor involving multiple stages, among others, tuning of geometry parameters. In particular, re-designing antennas to different operating frequencies, makes parametric optimization imperative to ensure the best achievable system performance. If the center frequency at the current design is distant from the target one, local tuning methods generally fail, whereas global algorithms...

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• Global EM-Driven Optimization of Multi-Band Antennas Using Knowledge-Based Inverse Response-Feature Surrogates

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - KNOWLEDGE-BASED SYSTEMS - Rok 2021

  Electromagnetic simulation tools have been playing an increasing role in the design of contemporary antenna structures. The employment of electromagnetic analysis ensures reliability of evaluating antenna characteristics but also incurs considerable computational expenses whenever massive simulations are involved (e.g., parametric optimization, uncertainty quantification). This high cost is the most serious bottleneck of simulation-driven...

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• Marcin Kulawiak dr hab. inż.

  Osoby

  Katedra Systemów Geoinformatycznych

• Towards sustainable catalyst-free biomass-based polyurethane-wood composites (PU-WC): From valorization and liquefaction to future generation of biocomposites

  Publikacja

  • A. Olszewski
  • P. Kosmela
  • Ł. Piszczyk

  - JOURNAL OF CLEANER PRODUCTION - Rok 2024

  A substantial aspect of materials engineering lies in the responsible process of designing polymer-based materials. Due to environmental pollution, excessive consumption of natural resources, and increasing environmental awareness of society, there is a massive need for polyurethane (PU) materials with reduced environmental impact. To date, research on catalyst-free polyurethane-wood composites (PU-WC) has demonstrated a huge potential...

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• Journal of Evidence-Based Dental Practice

  Czasopisma

  ISSN: 1532-3382 , eISSN: 1532-3390

• International Journal of Knowledge-Based Development

  Czasopisma

  ISSN: 2040-4468 , eISSN: 2040-4476

• International Journal of Evidence-Based Healthcare

  Czasopisma

  ISSN: 1744-1609 , eISSN: 1744-1595

• Journal of Sustainable Cement-Based Materials

  Czasopisma

  ISSN: 2165-0373 , eISSN: 2165-0381

• International Journal of Game-Based Learning

  Czasopisma

  ISSN: 2155-6849 , eISSN: 2155-6857

• Journal of Evidence-Based Integrative Medicine

  Czasopisma

  ISSN: 2515-690X

• Evidence Based Library and Information Practice

  Czasopisma

  ISSN: 1715-720X

• Interdisciplinary Journal of Problem-Based Learning

  Czasopisma

  ISSN: 1541-5015

• Chinese Journal of Evidence-Based Medicine

  Czasopisma

  ISSN: 1672-2531

• Evidence-Based Communication Assessment and Intervention

  Czasopisma

  ISSN: 1748-9539

• International Journal of Web Based Communities

  Czasopisma

  ISSN: 1477-8394

• Journal of Evidence-Based Social Work

  Czasopisma

  ISSN: 2640-8066 , eISSN: 2640-8074

• Russian Journal of Evidence-Based Gastroenterology

  Czasopisma

  ISSN: 2305-2260 , eISSN: 2309-1363

• Study on the Structure-Property Dependences of Rigid PUR-PIR Foams Obtained from Marine Biomass-Based Biopolyol

  Publikacja

  • P. Kosmela
  • A. Hejna
  • J. Suchorzewski
  • Ł. Piszczyk
  • J. T. Haponiuk

  - Materials - Rok 2020

  The paper describes the preparation and characterization of rigid polyurethane-polyisocyanurate (PUR-PIR) foams obtained with biopolyol synthesized in the process of liquefaction of biomass from the Baltic Sea. The obtained foams differed in the content of biopolyol in polyol mixture (0–30 wt%) and the isocyanate index (IISO = 200, 250, and 300). The prepared foams were characterized in terms of processing parameters (processing...

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• Recent Advances in Accelerated Multi-Objective Design of High-Frequency Structures using Knowledge-Based Constrained Modeling Approach

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - KNOWLEDGE-BASED SYSTEMS - Rok 2021

  Design automation, including reliable optimization of engineering systems, is of paramount importance for both academia and industry. This includes the design of high-frequency structures (antennas, microwave circuits, integrated photonic components), where the appropriate adjustment of geometry and material parameters is crucial to meet stringent performance requirements dictated by practical applications. Realistic design has...

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• Novel bio-based thermoplastic poly(ether-urethane)s. Correlations between the structure, processing and properties

  Publikacja

  • P. Kasprzyk
  • J. Datta

  - POLYMER - Rok 2019

  The main purpose of this work was to analyze the effect of the number of unreacted isocyanate groups and the [NCO]/[OH] molar ratio during the chain extension of a prepolymer during the polymerization process on the structure, processing and selected properties of thermoplastic poly(ether-urethane)s. Three series of novel thermoplastic polyurethanes were obtained via a prepolymer route. Three prepolymers were synthesized from diisocyanate...

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• Biopolyols obtained via crude glycerol-based liquefaction of cellulose: their structural, rheological and thermal characterization

  Publikacja

  • P. Kosmela
  • A. Hejna
  • K. Formela
  • J. T. Haponiuk
  • Ł. Piszczyk

  - CELLULOSE - Rok 2016

  In this work lignocellulose biomass liquefaction was used to produce biopolyols suitable for the manufacturing of rigid polyurethane foams. In order to better evaluate the mechanism of the process, pure cellulose was applied as a raw material. The effect of time and temperature on the effectiveness of liquefaction and the parameters of resulting biopolyols were characterized. The prepared materials were analyzed in terms of their...

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• Sustainable Strategy for Algae Biomass Waste Management via Development of Novel Bio-Based Thermoplastic Polyurethane Elastomers Composites

  Publikacja

  • E. Głowińska
  • O. Gotkiewicz
  • P. Kosmela

  - MOLECULES - Rok 2023

  This work concerns the waste management method of algae biomass wastes (ABW). For this purpose, we prepared bio-based thermoplastic polyurethane elastomer (bio-TPU) composites. Algae biomass wastes are derived from algal oil extraction of Chlorella vulgaris and from biomass of Enteromorpha and Zostera marina. ABWs were used in the bio-TPUs composites as a filler in the quantity of 1, 5, 10, and 15 wt.%. The bio-based composites...

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• Effect of hydroxylated soybean oil and bio-based propanediol on the structure and thermal properties of synthesized bio-polyurethanes

  Publikacja

  • J. Datta
  • E. Głowińska

  - INDUSTRIAL CROPS AND PRODUCTS - Rok 2014

  The aim of this work was to obtain bio-polyurethanes using synthetic compounds and bio-components, i.e. bio-glycols. Bio-polyurethanes were prepared by means of the prepolymer method. Prepolymers were synthesized from 4,4′-diphenylmethane diisocyanate (MDI) and a polyol mixture containing 75% by weight of commercial polyether and 25% by weight of hydroxylated soybean oils (H2 or H3), the latter being obtained in the reaction with...

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• Optical properties of MnO-B2O3 based glass

  Dane Badawcze

  open access

  • M. Łapiński

  MnO-B2O3 based glass with Au nanoparticles samples were  annealing for a various time (in a range of 24-96 hours) at various temperatures (from 340 up to 350 deg.). Presence of silver nanoparticles was detected by UV-VIS measurements. On the basis of change optical bandgap, Ag NPs was detected.

• Effect of molar ratio [NCO]/[OH] groups during prepolymer chains extending step on the morphology and selected mechanical properties of final bio‐based thermoplastic poly(ether‐urethane) materials

  Publikacja

  • P. Kasprzyk
  • J. Datta

  - POLYMER ENGINEERING AND SCIENCE - Rok 2018

  The main aim of this work was to investigate the effect of [NCO]/[OH] molar ratio used during the prepolymer chain extending step (with bio‐based diols) on the chemical structure, and thermomechanical and mechanical properties of thermoplastic poly(ether‐urethane)s. Thermoplastic poly(ether‐urethane)s were obtained from bio‐based polyol (polytrimethylene ether glycol), bio‐based glycol (1,4‐butanediol or 1,3‐propanediol), and 4,4'diphenylmethane...

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• A novel version of simulated annealing based on linguistic patterns for solving facility layout problems

  Publikacja

  • J. Grobelny
  • R. Michalski

  - Knowledge-Based Systems - Rok 2017

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• Emulsifi ers from renewable materials: an eco-friendly synthesis and properties

  Publikacja

  • H. Szeląg
  • E. Sadecka
  • R. Pawłowicz
  • A. Kuziemska

  - Polish Journal of Chemical Technology - Rok 2013

  The focus of this study was the preparation of novel bio based polyglycerol emulsifiers characterized by a one pot synthesis, thus by modified properties with respect to interfacial activity and effectiveness as emulsion stabilizers. The final products of the esterification process, carried out in the presence of carboxylates were used directly as emulsifiers (without purification or fractionation). Polyglycerol emulsifiers obtained...

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• Evaluation of Readiness of IT Organizations to Agile Transformation Based on Case-Based Reasoning

  Publikacja

  • M. Kurzawski
  • C. Orłowski
  • T. Deręgowski
  • A. Ziółkowski

  - Rok 2017

  Nowadays many of IT organization decides to change the way of delivering from classic, waterfall approach to agile. This transition is called “agile transformation” (AT). The problem of this process is that part of companies started AT without any analysis. This causes that many of transitions fails and organizations must return to old methods of delivering. Cost of return is significant and number of projects with violated project...

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• Effect of bio-based components on the chemical structure, thermal stability and mechanical properties of green thermoplastic polyurethane elastomers

  Publikacja

  • P. Parcheta-Szwindowska
  • E. Głowińska
  • J. Datta

  - EUROPEAN POLYMER JOURNAL - Rok 2020

  It seems to be obvious that conditions changes during polyols synthesis have impact on the polyols properties. Even the chemical formula is the same or similar, physicochemical properties and also molecular weight of polyols might be different and are significant in term of future polyurethanes properties and processing. In this work, fully bio-based poly(propylene succinate)s synthesized at different temperature conditions were...

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• Journal of Immersion and Content-Based Language Education

  Czasopisma

  ISSN: 2212-8433 , eISSN: 2212-8441

• JOURNAL OF WOMENS HEALTH & GENDER-BASED MEDICINE

  Czasopisma

  ISSN: 1059-7115

• International Journal of Space-Based and Situated Computing

  Czasopisma

  ISSN: 2044-4893 , eISSN: 2044-4907

• Higher Education Skills and Work-based Learning

  Czasopisma

  ISSN: 2042-3896 , eISSN: 2042-390X

• International Journal of Evidence Based Coaching & Mentoring

  Czasopisma

  ISSN: 1741-8305

• Epitoanyag-Journal of Silicate Based and Composite Materials

  Czasopisma

  ISSN: 0013-970X

• International Journal of Critical Computer-Based Systems

  Czasopisma

  ISSN: 1757-8779

• International Journal of Community Based Nursing and Midwifery

  Czasopisma

  ISSN: 2322-2476

• International Journal of Reasoning-based Intelligent Systems

  Czasopisma

  ISSN: 1755-0556

• Smart Cities System Design Method Based on Case Based Reasoning

  Publikacja

  • C. Orłowski
  • A. Ziółkowski
  • A. Orłowski
  • P. Kapłański
  • T. Sitek
  • W. Pokrzywnicki

  - LNCS Transactions on Computational Collective Intelligence - Rok 2016

  The objective of this paper is to present the results of research carried out to develop a design method for Smart Cities systems. The method is based on the analysis of design cases of Smart Cities systems in cities, the selection of the city appropriate to the requirements for implementation and application. The Case Based Reasoning method was used to develop the proposed design methodology, along with mechanisms of the conversion...

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• Bio based PUR-PIR foams thermal degradation (TG) and isoconversional kinetics

  Dane Badawcze

  open access

  • A. Olejnik
  • Ł. Piszczyk
  • P. Kosmela

  In the present work, we perform a thorough thermogravimetric (TG) analysis of the bio-based polyurethane – polyisocyanurate (PUR-PIR) foams in both nitrogen and oxygen atmosphere. A sustainable element of the foam was a biopolyol obtained via acid-catalyzed liquefaction of Zostera Marina and Enteromorpha Algae biomass. Based on isoconversional analysis...

• MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES

  Czasopisma

  ISSN: 1539-7734 , eISSN: 1539-7742

• Phylogenetic trees of genus Oncidium Sw. based on analysis of DNA sequences

  Dane Badawcze

  wersja 1.3 open access

  • P. Krajewski

  - seria: Oncidium Sw. taxonomy

  Genus Oncidium Sw. is widely regarded as a polyphiletic, and the taxonomic boundaries between him and such genera as Odontoglossum Kunth. or Miltonia Lindley remain blurred. The goal of the study was to determine the phylogenetic relationships within the genus Oncidium s.lato based on the DNA sequences analysis. The correlation between molecular data...