Wyniki wyszukiwania dla: FREE-LIVING BIRDS

• Application of Shape Memory Alloys in Pipeline Couplings for Shipbuilding

  Publikacja

  • L. Matuszewski

  - Polish Maritime Research - Rok 2020

  The aim of the study is to analyse shape memory alloy (SMA) pipeline joints in limited space applications for all kinds of ships. Generally, the space available in various areas on ships is strictly limited and service works usually meet many obstacles. If we consider a pipeline, the flange joints always require a larger free space around the pipe than the pipe alone. A simultaneous problem can occur with the propeller shaft line...

  Pełny tekst do pobrania w portalu

• Contamination of Arctic Lakes with Persistent Toxic PAH Substances in the NW Part of Wedel Jarlsberg Land (Bellsund, Svalbard)

  Publikacja

  • S. Lehmann-konera
  • R. Marek
  • Ł. Franczak
  • Ż. Polkowska

  - Water - Rok 2020

  The expansion of glacier‐free areas in polar regions favours the appearance of lakes in the non‐glaciated parts of glacier basins. This paper presents the differentiation of organic compound concentrations in fifty‐four Arctic lakes collected in four locations (Logne Valley, in the vicinity of the Scott, Renard and Antonia glaciers). We cover meteorological measurements, chemical analysis of sixteen dioxin‐like compounds (Polycyclic...

  Pełny tekst do pobrania w portalu

• Comparative evaluation of different methods for determining phytochemicals and antioxidant activity in products containing betalains - Verification of beetroot samples

  Publikacja

  • B. Kusznierewicz
  • M. Mróz
  • I. Koss-Mikołajczyk
  • J. Namieśnik

  - FOOD CHEMISTRY - Rok 2021

  This study presents methods that can be used to assess the health quality of products containing betalains. The paper compares and verifies data on the phytochemical composition of three different pigmented beetroot cultivars using spectrophotometric, HPLC-DAD, HPTLC and LC-Q-Orbitrap-HRMS techniques. Additionally, we compared the total antioxidant activity in both the cell-free and cellular systems. Betalain contribution to antioxidant...

  Pełny tekst do pobrania w portalu

• Robust-adaptive dynamic programming-based time-delay control of autonomous ships under stochastic disturbances using an actor-critic learning algorithm

  Publikacja

  • H. N. Esfahani
  • R. Szłapczyński

  - JOURNAL OF MARINE SCIENCE AND TECHNOLOGY - Rok 2021

  This paper proposes a hybrid robust-adaptive learning-based control scheme based on Approximate Dynamic Programming (ADP) for the tracking control of autonomous ship maneuvering. We adopt a Time-Delay Control (TDC) approach, which is known as a simple, practical, model free and roughly robust strategy, combined with an Actor-Critic Approximate Dynamic Programming (ACADP) algorithm as an adaptive part in the proposed hybrid control...

  Pełny tekst do pobrania w portalu

• Debonding Size Estimation in Reinforced Concrete Beams Using Guided Wave-Based Method

  Publikacja

  • B. Zima
  • R. Kędra

  - SENSORS - Rok 2020

  The following paper presents the results of the theoretical and experimental analysis of the influence of debonding size on guided wave propagation in reinforced concrete beams. The main aim of the paper is a development of a novel, baseline-free method for determining the total area of debonding between steel rebar embedded in a concrete cover on the basis of the average wave velocity or the time of flight. The correctness of...

  Pełny tekst do pobrania w portalu

• Investigation of stability and limit load of a truss overhead opened bridge

  Publikacja

  • Ł. Żmuda-Trzebiatowski
  • P. Iwicki
  • M. Krajewski

  - Rok 2016

  The paper presents selected methods of determining stability and limit load of a truss top chord in opened bridges. These methods include linear buckling and non-linear static analysis based on the finite element method and algorithms based on design code procedures. The described methods were tested on an example of a steel footbridge situated in Straszyn. The results of stability analysis are compared. The results of geometrical...

• Time-of-flight electron scattering from molecular hydrogen: Benchmark cross sections for excitation of the X1Σ+g→b3Σ+u transition

  Publikacja

  • M. Zawadzki
  • R. Wright
  • G. Dolmat
  • M. Martin
  • L. Hargreaves
  • D. Fursa
  • M. Zammit
  • L. Scarlett
  • J. Tapley
  • J. Savage... i 2 innych

  - PHYSICAL REVIEW A - Rok 2018

  The electron impact X1Σ+g to b3Σ+u transition in molecular hydrogen is one of the most important dissociation pathways to forming atomic hydrogen atoms, and is of great importance in modeling astrophysical and industrial plasmas where molecular hydrogen is a substantial constituent. Recently it has been found that the convergent close-coupling (CCC) cross sections of Zammit et al. [Phys. Rev. A 95, 022708 (2017)] are up to a factor...

  Pełny tekst do pobrania w portalu

• Effect of osmolytes on the thermal stability of proteins: replica exchange simulations of Trp-cage in urea and betaine solutions

  Publikacja

  • B. Adamczak
  • M. Kogut
  • J. Czub

  - PHYSICAL CHEMISTRY CHEMICAL PHYSICS - Rok 2018

  Although osmolytes are known to modulate the folding equilibrium, the molecular mechanism of their effect on thermal denaturation of proteins is still poorly understood. Here, we simulated the thermal denaturation of a small model protein (Trp-cage) in the presence of denaturing (urea) and stabilizing (betaine) osmolytes, using the all-atom replica exchange molecular dynamics simulations. We found that urea destabilizes Trp-cage...

  Pełny tekst do pobrania w portalu

• CONTROL OF THE WAVES IN A TOWING TANK WITH THE USE OF A BLACK-BOX MODEL

  Publikacja

  • M. Drzewiecki

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Rok 2018

  The paper describes an adaptive control system of the waves, implemented in the Ship Design and Research Centre, CTO S.A. The purpose of generating the waves in the towing tank is the modelling of the environmental conditions during hydrodynamic model tests. The tests are performed on scale models of towed or free running ships, anchored structures like oil rigs or bottommounted structures, e.g. wind turbines. In the towing tank...

  Pełny tekst do pobrania w portalu

• Threshold Attendance under Soft-Crash Model: TAG Protocol and Markovian Analysis

  Publikacja

  • J. Konorski

  - Rok 2018

  A realistic and systematic network evaluation should subsume an availability model and a failure model. We combine a "hard availability" model we call threshold attendance, whereby a certain minimum number of network elements must be present at any time, with a soft-crash failure model, whereby after experiencing a failure, a network element is still able to function correctly for a while in an emergency mode at a risk of a major...

  Pełny tekst do pobrania w portalu

• Nonlinear planar modeling of massive taut strings travelled by a force-driven point-mass

  Publikacja

  • M. Feretti
  • S. Gavrilov
  • V. Eremeev
  • A. Luongo

  - NONLINEAR DYNAMICS - Rok 2019

  The planar response of horizontal massive taut strings, travelled by a heavy point-mass, either driven by an assigned force, or moving with an assigned law, is studied. A kinematically exact model is derived for the free boundary problem via a variational approach, accounting for the singularity in the slope of the deflected string. Reactive forces exchanged between the point-mass and the string are taken into account via Lagrange...

  Pełny tekst do pobrania w portalu

• Evaluation of Three Peptide Immobilization Techniques on a QCM Surface Related to Acetaldehyde Responses in the Gas Phase

  Publikacja

  • T. Wasilewski
  • B. Szulczyński
  • W. Kamysz
  • J. Gębicki
  • J. Namieśnik

  - SENSORS - Rok 2018

  The quartz-crystal microbalance is a sensitive and universal tool for measuring concentrations of various gases in the air. Biochemical functionalization of the QCM electrode allows a label-free detection of specific molecular interactions with high sensitivity and specificity. In addition, it enables a real-time determination of its kinetic rates and affinity constants. This makes QCM a versatile bioanalytical screening tool for...

  Pełny tekst do pobrania w portalu

• Nuclear Magnetic Resonance Metabolomics Reveals Qualitative and Quantitative Differences in the Composition of Human Breast Milk and Milk Formulas

  Publikacja

  • D. Garwolińska
  • W. Hewelt-Belka
  • A. Kot-Wasik
  • U. K. Sundekilde

  - Nutrients - Rok 2020

  Commercial formula milk (FM) constitutes the best alternative to fulfill the nutritional requirements of infants when breastfeeding is precluded. Here, we present the comparative study of polar metabolite composition of human breast milk (HBM) and seven different brands of FM by nuclear magnetic resonance spectroscopy. The results of the multivariate data analysis exposed qualitative and quantitative differences between HBM and...

  Pełny tekst do pobrania w portalu

• Cure kinetics of epoxy/MWCNTs nanocomposites: Isothermal calorimetric and rheological analyses

  Publikacja

  • P. Vijayan
  • D. Puglia
  • H. Rastin
  • M. Saeb
  • B. Shojaei
  • K. Formela

  - PROGRESS IN ORGANIC COATINGS - Rok 2017

  A combinatorial route has been applied in cure kinetics study of epoxy nanocomposites containing multi-walled carbon nanotubes (MWCNTs) based on differential scanning calorimetry and rheokinetic analyses under isothermal conditions. Pristine and amine-modified MWCNTs bearing primary and secondary amines were used at very low concentrations (0.1 and 0.3 wt.% based on epoxy weight). Model-free and model-fitting methods were applied...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Guided ultrasonic waves for detection of debonding in bars partially embedded in grout

  Publikacja

  • B. Zima
  • M. Rucka

  - CONSTRUCTION AND BUILDING MATERIALS - Rok 2018

  This paper deals with theoretical, numerical and experimental investigations of guided wave propagation in multilayered cylindrical bars with pre-existing debonding. The research focuses on a complex description of the nature of the wave phenomena occurring in a debonded specimen with a special emphasis on the influence of the location of damage on the wave conversion and diffraction. Experimental non-destructive and destructive...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Analysis of hydrodynamic pressure fields of motorboats and pontoons in shallow water

  Publikacja

  • J. Bielański

  - HYDROACOUSTICS - Rok 2016

  The article presents the results of calculations of the pressure fields generated by a motorboat at the bottom of a shallow sea. Calculations were made using the boundary elements method (BEM), arranged on the surface of the boat and the bottom of the sea. This method is described in [3], and applied on a free surface linearized boundary condition. Results for four different lengths of motorboats, from 2.85 m to 9.5 m, sea depth...

  Pełny tekst do pobrania w portalu

• The roadway bridge over Vistula River in Plock - design and construction.

  Publikacja

  • N. Hajdin
  • B. Stipanić
  • J. Krawczyk
  • K. Wąchalski

  - Rok 2004

  The paper presents the design and construction works of the Roadway Bridge over Vistula River in Plock (Poland), designed by first two paper authors as being the winners of international competition for design oraganized by Polish association of the bridge engineers. Total length of the bridge is 1,200 m; 615 m is the length of main bridge part over the Vistula riverbed, and 585 m is the length of access bridge part over river...

• Diagnostyka łożysk silnika indukcyjnego na podstawie prądu zasilającego przy użyciu sztucznych sieci neuronowych

  Publikacja

  • T. Ciszewski
  • L. Swędrowski

  - Rok 2013

  W artykule zawarto wyniki badań dotyczące diagnostyki łożysk silnika indukcyjnego na podstawie pomiarów prądu zasilającego z wyko-rzystaniem sztucznych sieci neuronowych. Zaprezentowano wyniki uczenia sieci oraz rezultaty testów przeprowadzonych na danych spoza zbioru uczącego. Badania wykonane zostały na obiektach z celowo wprowadzonymi uszkodzeniami łożysk. Przedstawiona nowa koncepcja zakłada użycie zestawu sieci neuronowych...

• DIAGNOSTYKA ŁOŻYSK SILNIKA INDUKCYJNEGO PRZY UŻYCIU POMIARU PRĄDU ZASILAJĄCEGO I WIBRACJI

  Publikacja

  • T. Ciszewski

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Rok 2013

  W artykule przedstawione zostały wyniki badań diagnostycznych łożysk silnika indukcyjnego z zastosowaniem metody pomiaru prądu zasilającego oraz wibracji. Poruszone zostały problemy dotyczące poszukiwania nowej metody opartej na pomiarze i analizie prądu, która w znacznym stopniu ułatwiłaby szybkie i sprawne znalezienie uszkodzenia w maszynie, bez konieczności bezpośredniego dostępu do badanego urządzenia. Zaprezentowano rezultaty...

  Pełny tekst do pobrania w portalu

• Hydrauliczna wiarygodność wyników pomiarów terenowych stosowanych do identyfikacji oporności hydraulicznej przewymiarowanych sieci wodociągowych

  Publikacja

  • M. Kulbik

  - Instal - Rok 2013

  Publikacja zawiera zalecenia metodyczne dotyczące identyfikacji oporności hydraulicznej w przewymiarowanych sieciach wodociągowych na tle spotykanych nieprawidłowości. Krytycznie oceniono wyniki pomiarów terenowych, które zastosowano do tarowania komputerowych modeli przepływów (KMP) pomimo, że nie spełniały kryterium hydraulicznej wiarygodności. Ponadto zaproponowano spadek hydrauliczny jako obiektywny wskaźnik wiarygodności pomiarów,...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Data on bicycle traffic in Gdansk paired with weather and air quality data

  Dane Badawcze

  • A. Romanowska
  • K. Birr

  The file contains data on bicycle traffic registered by counting stations loacted in Gdańsk in the years 2013-2020. The data are paired with weather and air quality data from Gdansk collected for the same period. The data is described below:

• Data on bicycle traffic in Lodz (Poland) paired with weather and air quality data

  Dane Badawcze

  open access

  • A. Romanowska
  • K. Birr

  The file contains data on bicycle traffic registered by counting stations loacted in Lodz in the years 2016-2019. The data are paired with weather and air quality data from Lodz collected for the same period. The data is described below:

• The statistic properties of rms voltage and frequency in the ship's electrical power system

  Dane Badawcze

  open access

  • B. Pałczyńska

  The dataset is a part of the research results on the quality of supply voltage on bus bars of the main switchboard of the ship's electrical power system in different states of ship exploitation. The attached dataset contains the results of a statistical analysis of rms voltage and frequency in the ship's electrical power system. The following statistical...

• Mercury concentrations in Antarctic zooplankton with a focus on the krill species, Euphausia superba

  Publikacja

  • E. Korejwo
  • A. Panasiuk
  • J. Wawrzynek-Borejko
  • A. Jędruch
  • J. Bełdowski
  • A. Paturej
  • M. Bełdowska

  - SCIENCE OF THE TOTAL ENVIRONMENT - Rok 2023

  The Antarctic is the most isolated region in the world; nevertheless, it has not avoided the negative impact of human activity, including the inflow of toxic mercury (Hg). Hg deposited in the Antarctic marine environment can be bioavailable and accumulate in the food web, reaching elevated concentrations in high-trophic-level biota, especially if methylated. Zooplankton, together with 

  Pełny tekst do pobrania w serwisie zewnętrznym

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032367291]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032365601]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [52407300323681]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [524073003236571]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032379311]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032362571]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032373661]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032375381]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032361921]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [524073003236541]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [524073003236271]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032374881]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [5240730032362841]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Carcinoma in situ of cervix uteri - Female, 64 - Tissue image [524073003236601]

  Dane Badawcze

  open access

  • Gdański Uniwersytet Medyczny

  This is the histopathological image of CERVIX UTERI tissue sample obtained in Medical University Gdańsk and deposited in ZMDL-GUMED. The sample image was taken using: Pannoramic 250 3DHistech slide scanner (20x magnification) and saved to DICOM format.

• Potential energy surfaces of the low-lying electronic states of the Li+LiCs system

  Dane Badawcze

  open access

  • T. Kilich
  • P. Jasik
  • J. Kozicki
  • J. Sienkiewicz

  This data presents potential energy surfaces of Li atom interacting with LiCs dimer for the ground and first excited state. They were calculated using effective core potentials and MRCI method and include relativistic effects. The interatomic distance in the dimer is kept constant and equal to experimental value of 6.931704423 bohrs (3.6681 A). Energy...

• Exploring the Institutional and Bottom-Up Actions for Urban Air Quality Improvement: Case Studies in Antwerp and Gdańsk

  Publikacja

  • J. Badach
  • M. Dymnicka
  • J. Załęcki
  • M. Brosz
  • D. Voordeckers
  • M. Van Acker

  - Sustainability - Rok 2021

  The article presents the results of qualitative studies concerning the presence of air quality management in the process of urban planning and in the public discourse in Antwerp, Belgium, and Gdańsk, Poland. We focused on the way urban planners, environmental experts, and stakeholders perceive the problem of air pollution, especially with respect to urban development policy, and whether they consider it one of the major factors...

  Pełny tekst do pobrania w portalu

• A review on homogeneous and heterogeneous catalytic microalgal lipid extraction and transesterification for biofuel production

  Publikacja

  • V. K. Ponnumsamy
  • H. Al-Hazmi
  • S. Shobana
  • J. Dharmaraja
  • D. A. Jadhav
  • R. B. J
  • G. Piechota
  • B. Igliński
  • V. Kumar
  • A. Bhatnagar... i 2 innych

  - CHINESE JOURNAL OF CATALYSIS - Rok 2024

  Extracting lipids from microalgal biomass presents significant potential as a cost-effective approach for clean energy generation. This can be achieved through the chemical conversion of lipids to produce fatty acid methyl esters via transesterification. The extraction mainly involves free fatty acids, phospholipids, and triglycerides, and requires less energy, making it an attractive option for satisfying the growing demand for...

  Pełny tekst do pobrania w portalu

• Collagen Type II—Chitosan Interactions as Dependent on Hydroxylation and Acetylation Inferred from Molecular Dynamics Simulations

  Publikacja

  • M. Przybyłek
  • P. Bełdowski
  • F. Wieland
  • P. Cysewski
  • A. Sionkowska

  - MOLECULES - Rok 2023

  Chitosan–collagen blends have been widely applied in tissue engineering, joints diseases treatment, and many other biomedical fields. Understanding the affinity between chitosan and collagen type II is particularly relevant in the context of mechanical properties modulation, which is closely associated with designing biomaterials suitable for cartilage and synovial fluid regeneration. However, many structural features influence...

  Pełny tekst do pobrania w portalu

• Analytical Buckling of FG Nanobeams on The Basis of A New One Variable First-Order Shear Deformation Beam Theory

  Publikacja

  • M. Malikan
  • S. Dastjerdi

  - Rok 2018

  In this work, buckling analysis of functionally graded (FG) nanobeams based on a new refined beam theory has been analyzed. The beam is modeled as an elastic beam subjected to unidirectional compressive loads. To achieve this aim, the new obtained beam theory has only one variable which lead to one equation similar to Euler beam theory and also is free of any shear correction factor. The...

• Deep eutectic solvents in analytical sample preconcentration Part B: Solid-phase (micro)extraction

  Publikacja

  • J. Werner
  • A. Zgoła-Grześkowiak
  • J. Płatkiewicz
  • J. Płotka-Wasylka
  • N. Jatkowska
  • A. Kalyniukova
  • S. Zaruba
  • V. Andruch

  - MICROCHEMICAL JOURNAL - Rok 2023

  One of the key challenges of modern analytical chemistry is the monitoring of trace amounts of contaminants using sensitive and selective instrumental techniques. Due to the variety and complexity of some samples, it is often necessary to properly prepare a sample and to perform a preconcentration of trace amounts of analytes. In line with the principles of Green Analytical Chemistry (GAC), it is important for an analytical procedure...

  Pełny tekst do pobrania w serwisie zewnętrznym

• The valance state of vanadium-key factor in the flexibility of potassium vanadates structure as cathode materials in Li-ion batteries

  Publikacja

  • M. Prześniak-Welenc
  • M. Nadolska-Dawidowska
  • K. Jurak
  • J. Li
  • K. Górnicka
  • A. D. Mielewczyk-Gryń
  • M. Rutkowska
  • A. Nowak

  - Scientific Reports - Rok 2022

  Potassium hexavanadate (K2V6O16·nH2O) nanobelts have been synthesized by the LPE-IonEx method, which is dedicated to synthesis of transition metal oxide bronzes with controlled morphology and structure. The electrochemical performance of K2V6O16·nH2O as a cathode material for lithium-ion batteries has been evaluated. The KVO nanobelts demonstrated a high discharge capacity of 260 mAh g−1, and long-term cyclic stability up to 100...

  Pełny tekst do pobrania w portalu

• Anti-plane shear waves in an elastic strip rigidly attached to an elastic half-space

  Publikacja

  • G. Mikhasev
  • B. Erbas
  • V. Eremeev

  - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Rok 2023

  We consider the anti-plane shear waves in a domain consisting of an infinite layer with a thin coating lying on an elastic half-space. The elastic properties of the coating, layer, and half-space are assumed to be different. On the free upper surface we assume the compatibility condition within the Gurtin–Murdoch surface elasticity, whereas at the plane interface we consider perfect contact. For this problem there exist two possible...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Fault-tolerant performance of the novel five-phase doubly-fed induction generator

  Publikacja

  • R. Ryndzionek
  • K. Blecharz
  • F. Kutt
  • M. Michna
  • G. A. Kostro

  - IEEE Access - Rok 2022

  The article presents the concept of a new design of a multi-phase doubly-fed induction generator (DFIG). The innovative design approach uses a five-phase power supply from the rotor side of the generator with a three-phase classic stator power supply. Modern three-phase doubly-fed induction generators are the dominant choice for Wind Energy Conversion Systems (WECS). Solutions of this type are sensitive to the loss of at least...

  Pełny tekst do pobrania w portalu

• Determinants of Directionality and Efficiency of the ATP Synthase Fo Motor at Atomic Resolution

  Publikacja

  • A. Marciniak
  • P. Chodnicki
  • K. A. Hossain
  • J. Słabońska
  • J. Czub

  - Journal of Physical Chemistry Letters - Rok 2022

  Fo subcomplex of ATP synthase is a membrane-embedded rotary motor that converts proton motive force into mechanical energy. Despite a rapid increase in the number of high-resolution structures, the mechanism of tight coupling between proton transport and motion of the rotary c-ring remains elusive. Here, using extensive all-atom free energy simulations, we show how the motor’s directionality naturally arises from the interplay...

  Pełny tekst do pobrania w portalu

• Development of a Control System for an Autonomous Seaplane

  Publikacja

  • K. Lipiński
  • M. K. Gerigk
  • M. Chodnicki

  - Rok 2024

  Self-driving vehicles, also branded as driverless vehicles, autonomous vehicles, or robotic vehicles, are transport systems that can operate with a reduced human impact or even with any human input at all. The content of the present paper is limited to three types of potential applications: Unmanned Surface Vehicles (USVs), Autonomous Underwater Vehicles (AUVs) and Unmanned Aerial Vehicles (UAV). We set our particular focus on...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Enhancing the Separation Performance of Chitosan Membranes Through the Blending with Deep Eutectic Solvents for the Pervaporation of Polar/Non-Polar Organic Mixtures

  Publikacja

  • F. Galiano
  • A. Msahel
  • F. Russo
  • N. Rovella
  • A. Policicchio
  • S. B. Hamouda
  • A. Hafiane
  • R. Castro Munoz
  • A. Figoli

  - Membranes - Rok 2024

  This study explores the development of chitosan-based membranes blended with three distinct deep eutectic solvents (DESs) for the pervaporation separation of methanol and methyl tert-butyl ether. DESs were selected for their eco-friendly properties and their potential to enhance membrane performance. The chitosan (CS) membranes, both crosslinked and non-crosslinked, were characterized in terms of morphology, chemical composition,...

  Pełny tekst do pobrania w serwisie zewnętrznym