Search results for: 5-PHASE MOTOR

W artykule opisano metody ekstrapolacji chwili zgodności fazowej napięć łączonych obiektów elektroenergetycznych. Przeprowadzono analizę porównawczą wybranych metod ekstrapolacji w równych warunkach pracy oraz przedstawiono najistotniejsze wyniki badań.

STUDYING THE PROCESS OF OBTAINING PHOSPHATES OF METALS BASED ON THE PHASE EQUILIBRIA OF FOUR COMPONENT SYSTEMS

Publication

. L.D.
. A.S.
. A.
. B.
. O.P.
B. Leska

- News of the National Academy of Sciences of the Republic of Kazakhstan-Series Chemistry and Technology - Year 2019

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Synthesis, structure and application of a new class of Tr-podands derived in phase-transfer catalysis

Publication

B. Łęska
R. Pankiewicz
B. Gierczyk
G. Schroeder
B. Leska

- Journal of Molecular Catalysis A: Chemical - Year 2008

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Chapter 13 : The influence of dispersion phase on composite coating properties after cold working

Publication

R. Skoblik
R. Starosta
T. Dyl

- Year 2008

W pracy określono wpływ fazy dyspersyjnej Al2O3 na wybrane potencjalne właściwości powłok kompozytowych o osnowie niklowej. Powłoki Ni-Al-Al2O3 zostały nałożone na próbki stalowe przy użyciu technologii poddźwiękowego płomieniowego natryskiwania cieplnego. Następnie poddane zostały obróbce plastycznej na zimno i na gorąco poprzez walcowanie, a także prasowania na zimno na prasie hydraulicznej. Obróbka plastyczna jest metodą alternatywną...

Highly effective asphaltene-derived adsorbents for gas phase removal of volatile organic compounds

Publication

- SEPARATION AND PURIFICATION TECHNOLOGY - Year 2019

A novel nitrated asphaltene-derived adsorbent (Asf-Nitro) was prepared using facile isolation and modification procedures. The successful modification was confirmed by Fourier-transform infrared spectroscopy (FTIR). The nitrated adsorbent was evaluated in terms of dispersive and specific interactions, Lewis acid-base properties and adsorption isotherms by means of inverse gas chromatography (IGC). Nitration was found to be extremely...

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Furan Fragmentation in the Gas Phase: New Insights from Statistical and Molecular Dynamics Calculations

Publication

E. Erdmann
M. Łabuda
N. Aguirre
S. Díaz-Tendero
M. Alcamí

- JOURNAL OF PHYSICAL CHEMISTRY A - Year 2018

We present a complete exploration of the different fragmentation mechanisms of furan (C4H4O) operating at low and high energies. Three different theoretical approaches are combined to determine the structure of all possible reaction intermediates, many of them not described in previous studies, and a large number of pathways involving three types of fundamental elementary mechanisms: isomerization, fragmentation, and H/H2 loss...

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Application of cyanated asphaltenes in gas-phase adsorption processes for removal of volatile organic compounds

Publication

- CHEMICAL PAPERS - Year 2019

The paper presents an innovative, chemically modified (methylcyanated) asphaltene-based adsorbent that can be an inter-esting low-cost alternative for traditional adsorbents. Adsorption properties of adsorbents were examined by inverse gas chromatography technique, adsorption isotherms, and breakthrough curves. A significant increase in retention volume for pyridine, 2-pentanone, nitropropane, toluene, and 1-butanol was observed....

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Mathematical modeling of hydrogen production performance in thermocatalytic reactor based on the intermetallic phase of Ni3Al

Publication

J. Badur
M. Stajnke
P. Ziółkowski
P. Jóźwik
Z. Bojar
P. Ziółkowski

- Archives of Thermodynamics - Year 2019

The main goal of the following work is to adjust mathematical modelling for mass transfer, to specific conditions resulting from presence of chemical surface reactions in the flow of the mixture consisting of helium and methanol. The thermocatalytic devices used for decomposition of organic compounds incorporate microchannels coupled at the ends and heated to 500 oC at the walls regions. The results of the experiment were compared...

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Phenomenon of hydraulic jump formed on liquid layer by single-phase impinging liquid jet

Publication

S. Gumkowski

- Year 2005

Przedstawiono analizę teoretyczną zjawiska uskoku hydraulicznego tworzonego przez uderzającą strugę. rezultaty analizy teoretycznej porównano z wynikami badań eksperymentalnych.

On the mechanism of oscillations in three-phase system containing coationc surfactant and nitrobenzene liquid membrane

Publication

M. Szpakowska

- Year 2005

Obserwuje się oscylacje różnicy potencjału elektochemicznego między fazami wodnymi oscylatora zawierającego bromek heksadecylotrimetyloamoniowy. Ta różnica potencjału składa sie z potencjałów na granicach faz między membraną a fazą wodną donorową oraz membraną a fazą wodną akceptorową. Wykazano, że oscylacje zachodzą na granicy fazy akceptorowej i membrany. Są one spowodowane procesami adsorpcji/desorpcji pary jonowej surfaktantu...

Investigations of hydraulic jump configured by a two phase air water jetimpinging on a flat plate.

Publication

S. Gumkowski

- Chemical and Process Engineering : New Frontiers - Year 2003

Przedstawiono wyniki badań eksperymentalnych uskoku hydraulicznego powstającego przy napływie strugi uderzającej na powierzchnię płaskiej płyty.

A comprehensive lipidomic analysis of oilseeds using LC-Q-TOF-MS and dispersive micro-solid phase (D-μ-SPE) extraction techniques

Publication

- JOURNAL OF FOOD COMPOSITION AND ANALYSIS - Year 2023

Growing public health awareness increased the demand for natural products with positive health benefits. Vegetable oils containing omega-3 fatty acids (FA) such as alpha-linolenic acid (ALA) has been proposed as a possible source of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). In this work, a comprehensive lipidome analysis and comparison of seven oilseeds, including flaxseed, chia, hemp, black cumin, white sesame,...

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Influence of dispersed phase content on the mechanical properties of electroless nanocomposite Ni-P/Si3N4 and hybrid Ni-P/Si3N4/graphite layers deposited on the AW-7075 alloy.

Publication

K. Czapczyk
P. Zawadzki
N. Wierzbicka

- Materials - Year 2023

The article presents the results of mechanical testing of Ni-P/Si3N4 nanocomposite and hybrid Ni-P/Si3N4/graphite coatings deposited on AW-7075 aluminum alloy using the chemical reduction method. In terms of mechanical testing, microhardness was measured, and surface roughness and adhesion of the coatings to the aluminum substrate were determined using the “scratch test” method. The surface morphology of the deposited layers was...

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Fast and Efficient Four-Class Motor Imagery EEG Signals Analysis Using CSP-Ridge Regression Algorithm for the Purpose of Brain-Computer Interface."

Publication

S. Seifzadeh

- Year 2017

P.1.a.027 Association between the polymorphism of 5-HTTLPR gene and affective temperament dimensions using the TEMPS-A scale in obesity

Publication

A. Borkowska
M. Bieliński
S. Gołota
M. Tomaszewska
A. Kałwa
R. Junik
M. Gołębiewski
M. Sikora
A. Tretyn

- EUROPEAN NEUROPSYCHOPHARMACOLOGY - Year 2015

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Analiza SWOT i analiza 5 sił Portera dla rynku podstawowej opieki medycznej na obszarze miasta Gdańska

Publication

J. Synoweć

- Year 2017

In recent years we have seen the dynamic development of medical services sector inPoland. Private health centres focus on aggressive development strategy. The role of primaryhealth care facilities, which provide services financed from public funds, declined. The purpose of article is to describe medical services market in Gdańsk, especially in Gdańsk-South district. Itincludes demographics, the number and characteristics...

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A Zn-Dependent Metallopeptidase Is Responsible for Sensitivity to LsbB, a Class II Leaderless Bacteriocin of Lactococcus lactis subsp. lactis BGMN1-5

Publication

G. Uzelac
M. Kojic
J. Lozo
T. Aleksandrzak-Piekarczyk
C. Gabrielsen
T. Kristensen
I. Nes
D. Diep
L. Topisirovic

- JOURNAL OF BACTERIOLOGY - Year 2013

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Folic Acid‐Navigated and β‐Cyclodextrin‐Decorated Carbon‐Encapsulated Iron Nanoparticles as the Nanotheranostic Platform for Controlled Release of 5‐Fluorouracil

Publication

A. Kasprzak
K. Gunka
M. Fronczak
M. Bystrzejewski
M. Poplawska

- ChemistrySelect - Year 2018

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Opinia techniczna dotycząca stateczności i sposobu zabezpieczenia skarpy przy budynku mieszkalnym ul. Majkowskiego 5 w Gdyni.

Publication

- Year 1997

Amberlyst-15 catalysed synthesis of novel indole derivatives under ultrasound irradiation: Their evaluation as serotonin 5‑HT2C receptor agonists

Publication

G. Sujeevan
R. Kamaraj
K. Amirul
J. Sandeep
R. Medishetti
N. Sushma
P. Misra
M. Pal
K. Hossain

- BIOORGANIC CHEMISTRY - Year 2021

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Functionalization of the transition metal oxides FeO, CoO, and NiO with alkali metal atoms decreases their ionization potentials by 3–5 eV

Publication

D. Faron
P. Skurski
I. Anusiewicz

- JOURNAL OF MOLECULAR MODELING - Year 2019

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Orthodontic characteristics of maxillary arch deficiency in 5-year-old patientsundergoing unilateral cleft lip and palate repair with and withoutearly gingivoplasty

Publication

A. Wojtaszek-Słomińska
A. Renkielska
M. K. Dobke
A. Gosman
W. Słomiński

- JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY - Year 2010

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Recreation of Construction Patterns by 4-, 5- and 6-year-old Children 70 Years Ago and Today. Comparison of Test Results

Publication

J. Jelinek
J. A. Jelinek

- LUBELSKI ROCZNIK PEDAGOGICZNY - Year 2023

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Thermally induced formation of zinc oxide nanostructures with tailoring morphology during metal organic framework (MOF-5) carbonization process

Publication

K. Cendrowski
P. Skumial
P. Spera
E. Mijowska

- Materials & Design - Year 2016

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Alternative method for the synthesis of imidazo[5,1-f][1,2,4]triazin-4(3H)-one—a substrate for the preparation of phosphodiesterase (5) inhibitors

Publication

- TETRAHEDRON - Year 2013

Imidazo[5,1-f][1,2,4]triazin-4(3H)-ones, as isosteres of purine, are of interest for pharmaceutical research as potential substrates for the synthesis of cGMP-PDE5 inhibitors. We present a novel, alternative method for the synthesis of imidazotriazinones, that differs from the previously reported ones with respect to the method of construction of the triazinone ring in the molecule. The key step in our approach is condensation...

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Zachowanie poprzez sieciowanie w przedsiębiorczości społecznej w odpowiedzi na trudne otoczenie instytucjonalne – przypadek 5 spółdzielni socjalnych

Publication

M. Starnawska

- Problemy Zarządzania - Year 2014

Celem niniejszego artykułu jest zobrazowanie procesów, jakimi są zachowania przedsiębiorców, zachodzących w przedsiębiorczości społecznej w odpowiedzi na trudne otoczenie instytucjonalne. Opisano zachowania przedsiębiorcze przedstawicieli pięciu spółdzielni socjalnych na podstawie pogłębionych wywiadów i obserwacji . Za pomocą metody ciągłego porównywania wyodrębniono 3 główne kategorie zachowań badanych przedsiębiorców, które...

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La 15 Nb x Ge 9 : a superstructure of the Mn 5 Si 3 structure type with interstitial Nb atoms

Publication

J. Bławat
M. Roman
W. Xie
R. J. Cava
T. Klimczuk

- JOURNAL OF SOLID STATE CHEMISTRY - Year 2018

The crystal structure and elementary properties of La15NbxGe9 are reported. Single-crystal X-ray diffraction,from a crystallite with only 0.12 Nb/formula unit, reveals that this compound, although transition metal deficient, crystallizes in a hexagonal “15-1-9”-like structure type, space group P63mc (no. 186) with lattice parameters a = b = 15.5017(2) Å, c = 6.9173(2) Å. The physical properties were examined by specific heat and resistivity...

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Surgical Site Infection after Breast Surgery: A Retrospective Analysis of 5-Year Postoperative Data from a Single Center in Poland

Publication

A. Palubicka
R. Jaworski
M. Wekwejt
B. Świeczko-Żurek
M. Pikula
J. Jaskiewicz
J. Zielinski

- Medicina-Lithuania - Year 2019

Background and Objectives: Surgical site infection (SSI) is a significant complication of non-reconstructive and reconstructive breast surgery. This study aimed to assess SSI after breast surgery over five years in a single center in Poland. The microorganisms responsible for SSI and their antibiotic susceptibilities were determined. Materials and Methods: Data from 2129 patients acquired over five years postoperatively by the...

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Peryferia elektryki. Biul. Oddz. Białost. SEP**2002 nr 14 s. 29-33, 5 rys.bibliogr. 3 poz.

Publication

W. Matulewicz

- Year 2002

Przedstawiono sposób odwzorowania fragmentu krwioobiegu za pomocą obwoduelektrycznego. Podano zmiany przepływu krwi w przypadku marskości wątroby.

Development of a vortex-assisted switchable-hydrophilicity solvent-based liquid phase microextraction for fast and reliable extraction of Zn (II), Fe (II), Pb (II), and Cd (II) from various baby food products

Publication

H. Haq
A. Elik
G. Isci
M. Ekici
N. Gürsoy
G. Boczkaj
N. Altunay

- FOOD CHEMISTRY - Year 2024

This manuscript describes the development of a novel liquid phase microextraction (LPME) method for the extraction and determination of Zn (II), Fe (II), Pb (II), and Cd (II) in various infant/baby food and supplements products. The method is based on vortex-assisted extraction combined with a switchable-hydrophilicity solvent (SHS) sample preparation. The SHS, which undergoes reversible phase changes triggered by pH change, enables...

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Effect of Cr and Mn doping on ferroelectric and dielectric properties of Li1.72Na0.28Ge4O9 single crystals

Publication

A. Jasik
S. Kaczmarek
K. Matyjasek
R. J. Barczyński

- PHASE TRANSITIONS - Year 2013

Li1.72Na0.28Ge4O9 single crystals pure and slightly doped with chromium and manganese, obtained by Czochralski growth, were investigated for their ferroelectric and dielectric properties. The change in stoichometry of Li2− x Na x Ge4O9 (x = 0.28) crystals doped with Cr and Mn (0.1 mol.%) had an influence on the value of ferroelectric-to-paraelectric phase transition temperature, T c. The applied doping affects the T c value by...

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Green capsule phase microextraction employing hydrophobic monolithic sol-gel octadecyl siloxane platforms for the monitoring of organophosphorus pesticides in environmental water samples

Publication

N. Manousi
A. Ferracane
A. Kabir
K. G. Furton
P. Q. Tranchida
G. A. Zachariadis
J. Płotka-Wasylka
L. Mondello
V. F. Samanidou
E. Rosenberg

- Sustainable Chemistry and Pharmacy - Year 2022

In this study, a novel, facile and green capsule phase microextraction (CPME) method is presented for the extraction and preconcentration of organophosphorus pesticides (i.e., chlorpyrifos, disulfoton, ethoprophos, fenchlorphos, prothiofos, and parathion-methyl) from environmental water samples. Monolithic sol-gel octadecyl siloxane (sol-gel C18) sorbent encapsulated within porous polypropylene capsules was synthesized, characterized,...

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Chromium‑based metal organic framework for pipette tip micro‑solid phase extraction: an effective approach for determination of methyl and propyl parabens in wastewater and shampoo samples

Publication

M. Kaykhaii
S. H. Hashemi
F. Andarz
A. Piri
G. Sargazi

- BMC Chemistry - Year 2021

Abstract Background A chromium-based metal organic framework was synthesized and employed as an efficient sorbent for pipette tip micro-solid phase extraction and preconcentration of parabens from wastewater and shampoo samples up to sub-ppb level before their spectrophotometric analysis. Results Factors affecting preconcentration including volume and type of solvent, amount of sorbent, number of extraction, and volume and pH of...

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Silica-Based Ionogels: Nanoconfined Ionic Liquid-Rich Fibers for Headspace Solid-Phase Microextraction Coupled with Gas Chromatography–Barrier Discharge Ionization Detection

Publication

- ANALYTICAL CHEMISTRY - Year 2014

In this work, hybrid silica-based materials with immobilized ionic liquids (ILs) were prepared by sol–gel technology and evaluated as solid-phase microextraction (SPME) fiber coatings. High loadings of the IL 1-methyl-3-butylimidazolium bis(trifluoromethylsulfonyl)imide ([C4MIM][TFSI]) were confined within the hybrid network. Coatings composition and morphology were evaluated using scanning electron microscopy and energy dispersive...

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Application of sublation and two phase titration methods for analytical of surfactants in AFFF fire-fighting foams

Publication

- Year 2007

Celem badań była próba opracowania odpowiedniej metody izolacji ze ścieków fluorowanych związków powierzchniowo czynnych FZPC do celów analitycznych, a także metody ich ilościowego oznaczania. W badaniach polegających na oznaczaniu stężenia FZPC w oparciu o miareczkowanie w układzie dwufazowym: woda/chloroform użyto Hyaminy 1622, jako titranta oraz błękitu metylenowego, jako wskaźnika. Kolejnym etapem badań była izolacja ZPC z...

Solid phase microextraction combined with chromatography - a powerful tool for determination of warfare agents and related compounds

Publication

- CURRENT ORGANIC CHEMISTRY - Year 2007

Opisano zastosowanie mikroekstrakcji do fazy stacjonarnej do izolacji wzbogacania środków bojowych i produktów ich degradacji w powietrzu, wodzie i glebie oraz próbkach bilogicznych. Na etapie oznaczeń końcowych stosuje się najczęściej chromatografię gazową. Anality można pobierać przez bezpośrednie zanurzenie włókna w próbce ciekłej i gazowej oraz w fazie nadpowierzchniowej. Stosując SPME-GC można osiągnąć niskie granice oznaczalności...