Filtry
wszystkich: 4865
wybranych: 3551
-
Katalog
- Publikacje 3551 wyników po odfiltrowaniu
- Czasopisma 266 wyników po odfiltrowaniu
- Konferencje 12 wyników po odfiltrowaniu
- Wydawnictwa 1 wyników po odfiltrowaniu
- Osoby 397 wyników po odfiltrowaniu
- Wynalazki 1 wyników po odfiltrowaniu
- Projekty 14 wyników po odfiltrowaniu
- Laboratoria 3 wyników po odfiltrowaniu
- Aparatura Badawcza 3 wyników po odfiltrowaniu
- Kursy Online 70 wyników po odfiltrowaniu
- Wydarzenia 14 wyników po odfiltrowaniu
- Dane Badawcze 533 wyników po odfiltrowaniu
Filtry wybranego katalogu
wyświetlamy 1000 najlepszych wyników Pomoc
Wyniki wyszukiwania dla: ELECTRONIC DEUSITY
-
Hopping or Tunneling? Tailoring the Electron Transport Mechanisms through Hydrogen Bonding Geometry in the Boron-Doped Diamond Molecular Junctions
PublikacjaMechanisms of charge transport in molecular junctions involving hydrogen bonds are complex and remain mostly unclear. This study is focused on the elucidation of the electron transfer in a molecular device consisting of two boron-doped diamond interfaces bound with an aromatic linker and a hydrogen bonding surrogating molecule. The projected local density of states (PLODS) analysis coupled with transmission spectra and current−voltage...
-
Chapter 4. Electricity generation from glucose microbial fuel cell
PublikacjaThe microbial fuel cell was constructed to generate electricity with simultaneous digestion of a glucose fuel by a bacterial biofilm. The decomposition of glucose resulted in releasing of electrons to an anode and to production of some by-products, e.g. metane or organic acids. It was found that maximum electric power density strongly depended on the proton transport through the proton exchange membrane seperating the anolyte and...
-
Radiation dose distributions in three dimensions from tomographic optical density scanning of polymer gels: II. Optical properties of the BANG polymer gel
Publikacja -
Dermal microvessel density and maturity is closely associated with atherogenic dyslipidemia and accumulation of advanced glycation end products in adult patients with type 1 diabetes
Publikacja -
Spectroscopic and cytotoxic characteristics of (p-cymene)Ru(II) complexes with bidentate coumarins and density functional theory comparison with selected Pd(II) complexes
PublikacjaThis paper presents the synthesis of two new (p-cymene)-ruthenium(II) complexes with the bidentate coumarin ligands. Both complexes were characterized by FTIR spectroscopy, 1H NMR, 13C NMR, MS, elemental analysis and DFT calculations. The X-ray structure of complex 3a was also solved. The cytotoxic properties of both complexes were examined on human leukemia NALM-6 and HL-60 cells and melanoma WM-115 cells. The complexes possess...
-
Evaluation by means of magneto-acoustic emission and Barkhausen effect of time and space distribution of magnetic flux density in ferromagnetic plate magnetized by a C-core
PublikacjaPokazano wyniki badań emisji magnetoakustycznej (EMA) i efektu Barkhausena (HEB) dla dwóch płyt stalowych o różnych wymiarach. Wyniki te są porównane z wynikami modelowania zjawiska EMA z wykorzystaniem metody elementów skończonych z uwzględniem efektu prądów wirowych. Uzyskano zadawalające dopasowanie modelu, który odtwarzał poszerzenie maksimum EMA oraz przesunięcie fazowe i zmianę amplitudy HEB.
-
Fine-Tuning the Photocatalytic Activity of the Anatase {1 0 1} Facet through Dopant-Controlled Reduction of the Spontaneously Present Donor State Density
PublikacjaThe present study highlights the importance of the net density of charge carriers at the ground state on photocatalytic activity of the faceted particles, which can be seen as a highly underexplored problem. To investigate it in detail, we have systematically doped {1 0 1} enclosed anatase nanoparticles with Gd3+ ions to manipulate the charge carrier concentration. Furthermore, control experiments using an analogical Nb5+ doped...
-
Monitoring the BTEX Volatiles during 3D Printing with Acrylonitrile Butadiene Styrene (ABS) Using Electronic Nose and Proton Transfer Reaction Mass Spectrometry
PublikacjaWe describe a concept study in which the changes of concentration of benzene, toluene, ethylbenzene, and xylene (BTEX) compounds and styrene within a 3D printer enclosure during printing with different acrylonitrile butadiene styrene (ABS) filaments were monitored in real-time using a proton transfer reaction mass spectrometer and an electronic nose. The quantitative data on the concentration of the BTEX compounds, in particular...
-
Electronic Voting: 8th International Joint Conference, E-Vote-ID 2023, Luxembourg City, Luxembourg, October 3–6, 2023, Proceedings
Publikacja -
Electronic Voting: 8th International Joint Conference, E-Vote-ID 2023, Luxembourg City, Luxembourg, October 3–6, 2023, Proceedings
Publikacja -
Monitoring the BTEX Volatiles during 3D Printing with Acrylonitrile Butadiene Styrene (ABS) Using Electronic Nose and Proton Transfer Reaction Mass Spectrometry
Publikacja -
DFT study of low-energy electron interaction with pyridine, pyrazine and their halo derivatives
PublikacjaIn this work, the density functional theory with B3LYP hybrid functional was employed to calculate quantities useful for estimating the behavior of pyridine, pyrazine and their derivatives monosubstituted with Cl or Br atom, when exposed to low-energy electron impact. Vertical electron affinities obtained in several Pople basis sets and in aug-cc-pVTZ basis set are reported. Although some of the investigated molecules do not form...
-
Spontaneous electron emission vs dissociation in internally hot silver dimer anions
PublikacjaReferring to a recent experiment, we theoretically study the process of a two-channel decay of the diatomic silver anion (Ag2-), namely the spontaneous electron ejection giving Ag2 + e- and the dissociation leading to Ag- + Ag. The ground state potential energy curves of the silver molecules of diatomic neutral and negative ion were calculated using proper pseudo-potentials and atomic basis sets. We also estimated the non-adiabatic...
-
A dressing of zero-range potentials and electron-molecule scattering problem at low energies
PublikacjaTechnika ''ubierania'' jest używana do poprawy modelu potencjału zerowego promienia (ZRP). Rozważamy przekształcenia Darboux zaczynające się od ZRP, wynik ''ubierania'' daje potencjał z niezerowym promieniem, który zależy od parametrów rozwiązania.
-
Modeling the effect of electric vehicles on noise levels in the vicinity of rural road sections
PublikacjaNumerous European countries experience a steady increase in the share of electric (EV) and hybrid electric (HEV) vehicles in the traffic stream. These vehicles, often referred to as low- or zero-emission vehicles, significantly reduce air pollution in the road environment. They also have a positive effect on noise levels in city centers and in the surroundings of low-speed roads. Nevertheless, issues related to modeling noise from...
-
Evaluation of the energy efficiency of electric vehicle drivetrains under urban operating conditions
PublikacjaIn electric vehicles, as in hybrids vehicles, a very important factor affecting the energy efficiency of the powertrain is the ability to use the regenerative braking energy. Depending on the settings available in electric vehicles, the driver can choose different modes of operation: switch off the regenerative braking mode altogether, select the intensity of regenerative braking, or leave the control system in automatic mode....
-
Ball milling treatment of Mn3O4 regulates electron transfer pathway for peroxymonosulfate activation
PublikacjaHeterogeneous metal catalysts have attracted considerable interest in advanced oxidation processes (AOPs) for wastewater treatment by activating peroxymonosulfate (PMS). However, it remains challenging to the rational design of efficient reaction pathway for high-performance contaminants removal by regulating the inherent structure of metal oxides. Herein, a high-energy ball milling method was employed to modulate the electronic...
-
Terminal charging scheduling of battery electric buses based on vehicle routing problem
PublikacjaElectric buses are considered to be a viable solution for reducing emission in dense urban areas. However, the greater charging time is a huge challenge for operators. In this paper, charging scheduling method was elaborated based on vehicle routing problem using mixed-integer linear programming model. The main novelty of the paper is the combination of modelling aspect, namely flexible turn sequence and heterogeneous shared charging...
-
Electron Scattering from Methyl Formate (HCOOCH3): A Joint Theoretical and Experimental Study
PublikacjaElastic low-energy electron collisions with methyl formate have been studied theoretically at the level of various theories. The elastic integral cross section was calculated using Schwinger multichannel and R-matrix methods, in the static-exchange and static-exchange plus polarization levels of approximations for energies up to 15 eV. The absolute total cross section for electron scattering from methyl formate has been measured...
-
The Research into the Effect of Conditions of Combined Electric Powered Diamond Processing on Cutting Power
Publikacja -
Entanglement in S states of two-electron quantum dots with Coulomb impurities at the center
Publikacja -
Research of Influence Electric Conditions Combined ElectroDiamond Processing by on Specific Consumption of Wheel*
Publikacja -
Photocatalytic hydrogen generation over alkaline-earth titanates in the presence of electron donors
Publikacja -
Ultrastructural analysis of the submandibular sialoliths: Raman spectroscopy and electron back-scatter studies
PublikacjaThe aim of work was the epidemiological analysis of the occurrence of sialolithiasis of the submandibular gland in adults and the evaluation of the ultrastructure of salivary stones. The study sample consisted of 44 sialoliths. Analysis of the structure and chemical composition of sialoliths was performed using a Scanning Electron Microscope and Raman Spectroscopy. Comparing our results with the literature we can say that the epidemiology...
-
Effects of geomagnetic disturbances in daytime variations of the atmospheric electric field in polar regions
Publikacja -
Increasing Electric Vehicles Reliability by Non-Invasive Diagnosis of Motor Winding Faults
Publikacja -
Numerical and experimental investigation of thermal convection near electric devices with vertical channels
PublikacjaThis paper presents the results of numerical and experimental investigation of thermal convection near heat emitting surfaces of an electric device. For the intensification of thermal convection, special vertical channels were formed near the heat emitting surfaces of the device. An experimental test has proved that there is an optimal length of the channels – thermal convection is the most intensive then. Air velocity vectors...
-
Angle Tracking Observer for Filtering Rotor Position Estimates in Sensorless Electric Drives
PublikacjaSensorless electric drives use measurements of electrical quantities to estimate rotor position and speed. Measurement errors deteriorate the estimation accuracy, thus additional means are necessary to remove high-frequency components from estimated signals. This paper proposes to use an Angle Tracking Observer (ATO) for reducing noise in rotor position estimates, which is related to random errors in the measurements. A simplified,...
-
Selected issues on the role of electric lighting in the regeneration programs of urban spaces in Poland
PublikacjaThis paper reflects on the basic research done in the area of outdoor public lighting in regard to regeneration processes. The general purpose of this scientific paper is to investigate the role that lighting design plays within regeneration frameworks. Referring to a wide spectrum of academic publications, the paper provides an overview of regeneration and outdoor public lighting objectives. Emphasize is put on the obstacles for lighting...
-
Wieloźródłowy model pola elektrycznego okrętu = Multisource model of ship electric field
PublikacjaW pracy przedstawiono wieloźródłowy model pola elektrycznego okrętu. Wieloźródłowy model stanowi układ źródeł prądowych o określonych położeniach.
-
Cross section calculations for electron impact ionization and elastic scattering from cisplatin
PublikacjaCałkowity przekrój czynny na jednokrotną jonizację cisplatyny (H6N2Cl2Pt) w zderzeniach z elektronami został obliczony przy wykorzystaniu modelu BEB (binary-encounter-Bethe) dla energii zderzenia od progu na jonizację do 5 keV. W celu uzyskania danych niezbędnych w modelu BEB, geometryczna i elektronowa struktura cisplatyny została przebadana metodami chemii kwantowej. Obliczono również przekrój czynny na sprężyste rozproszenie...
-
Materials for Mediator-free Electron Transfer in the Enzymatic Electrodes of Biobatteries and Biofuel Cells
PublikacjaWe present functionalization of single-walled carbon nanotubes (SWCNTs) and their application in the enzymatic fuel cells construction. SWCNTs were covalently modified with different types of aromatic moieties. Free radical reaction was employed to create direct carbon-carbon bond between moiety and SWCNTs. In second approach functionalization takes place through amide bonding. Functionalized SWCNTs were characterized by spectroscopy...
-
Influence of electric, magnetic and electromagnetic fields on the circadian system – current stage of knowledge
PublikacjaOne of the side effects of each electrical device work is the electromagnetic field generated near its workplace. All organisms, including humans, are exposed daily to the influence of different types of this field, characterized by various physical parameters. Therefore, it is important to accurately determine the effects of an electromagnetic field on the physiological and pathological processes occurring in cells, tissues and...
-
Modeling N2O behavior during denitrification with different carbon sources and electron acceptors
PublikacjaA mathematical model was developed for identification of the most important mechanism leading to nitrous oxide (N2O) accumulation in denitrifying activated sludge systems. The activated sludge model No. 2d (ASM2d) was extended to include intermediate three steps of the denitrification process. The formation and accumulation of nitric oxide (NO) was assumed to be very low in the performed laboratory experiments. These experiments...
-
Inductive Bifilar Coil Based Wireless Charging System for Autonomous Electric Boat
Publikacja -
Modeling of TiO2-Based Electron-Selective Contacts for Crystalline Silicon Solar Cells
Publikacja -
Confirmative electric DNA array-based test for food poisoning Bacillus cereus
Publikacja -
Analysis of airborne metal containing particles with EDX/EDS detectorsin electron microscopes
PublikacjaIn years 2006-2010 particulate matter analysis was undertaken for dust samples collected from Gdansk and London area in orderto compare their morphology and composition. Part of those studies was devoted to analysis of particulate matter (PM) bearingmetals. Characterization of the morphology and size of the particles collected onto the filters was performed using a scanning electronmicroscope (SEM) and transmission electron microscope...
-
Fragmentation of isoxazole molecules by electron impact in the energy range 10-85 eV
PublikacjaBadano fragmentację cząsteczek isoxazolu w zderzeniach z elektronami metodą wzbudzenia optycznego. Obserwowano linie wzbudzonego wodoru z serii Balmera oraz pasma emisyjne fragmentów CH oraz CN. Zmierzono bezwzględne wartości emisyjnych przekrojów czynnych.
-
Are vehicles driven in electric mode so quiet that they need acoustic warning signals?
PublikacjaW referacie przedstawiono i przedyskutowano problematykę znacznej redukcji hałasu emitowanego przez pojazdy z napędem elektrycznym i potencjalnego wzrostu zagrożenia bezpieczeństwa ruchu drogowego związanego z niezauważaniem takich pojazdów przez pieszych uczestników ruchu. Rozważano konieczność instalowania w takich pojazdach specjalnych sygnałów ostrzegawczych. Zestawiano ilość wypadków z udziałem pieszych i pojazdów poruszających...
-
Elastic electron scattering in krypton in the energy range from 5 to 10 eV
PublikacjaZmierzono różniczkowe przekroje czynne na rozproszenie sprężyste elektronów w kryptonie dla energii elektronów 5, 7.5 oraz 10 eV, w zakresie kątów rozproszenia od 30 do 180 stopni. Pomiary w zakresie dużych kątów rozproszenia wykonano wykorzystując metodę lokalnego pola magnetycznego.
-
Speed and load torque observer application in high-speed train electric drive
PublikacjaW artykule przedstawiono zastosowanie diagnostyczne obserwatorów prędkości obrotowej i momentu obciążenia w układzie napędowym z silnikiem asynchronicznym. System diagnostyczny jest dedykowany do napędu pociągu szybkiego. Celem diagnostycznym jest monitorowanie stanu czujnika prędkości obrotowej wału silnika oraz układu przeniesienia momentu trakcyjnego. Analiza sygnałów obliczanych w obserwatorach stanu pozwala na wykrycie uszkodzeń...
-
A hartree-fock approach to the steklov eigenproblem for a two-electron atom in an s2 state
PublikacjaW pracy rozważono zagadnienie własne typu Stekłowa (z wartścią własną występującą wyłącznie w liniowym warunku brzegowym) dla nierelatywistycznego atomu dwuelektronowego w stanie s2, znajdującego się wewnątrz wnęki kulistej. Startując z zasady wariacyjnej, wyprowadzono równanie typu Hartree-Focka dla jednoelektronowej radialnej funkcji falowej.
-
An electric ring thruster as auxiliary manoeuvring propulsion system for watercraft - construction analysis
PublikacjaThe reported project aimed at examining properties and purposefulness of use of modern electromagneticbearings for a screw propeller in a prototype version of a synchronous ring motor with rare earths magnets.Bearings of this type generate electromagnetic forces which keep the rotor in a state of levitation. Therotating machine with magnetic bearings can work in any environment which reveals diamagnetic properties(air, vacuum,...
-
Total cross-section measurements for electron collision with α-tetrahydrofurfuryl alcohol (C5H10O2)
PublikacjaPrzedstawiono całkowite przekroje czynne (TCS) na rozpraszanie elektronów na drobinach α-tetrahydrofurfurylu, zmierzone w zakresie energii zderzenia 1-370 eV oraz policzone powyżej 50 eV. Przedyskutowano otrzymaną zależność TCS od energii. Wyniki porównano z dostępnymi teoretycznymi i eksperymentalnymi przekrojami czynnymi.
-
Development of free electron laser and accelerator technology in Poland (CARE and EuCARD projects)
Publikacja -
Electron-scattering total cross sections for complex molecules: group additivity rule
PublikacjaZaprezentowano całkowite przekroje czynne na rozpraszanie elektronów na dwóch rodzinach drobin: pierwszej - zawierającej azot jako atom centralny [N(CH3)3, NH2CH3, NH3]oraz drugiej - rodzinę eterów cyklicznych [c-(CH2)nO, gdzie n=2-5]. Zostało pokazane, że TCS dla niektórych drobin wieloatomowych można wyznaczyć na podstawie wyników TCS dla drobin o prostszej budowie lub ich fragmentów.
-
Nonlinear model of a synchronous generator for analysis of more electric aircraft power systems
PublikacjaA nonlinear model for studying a variable-speed synchronous generator (SG) in more electric aircraft (MEA) power system has been developed. The saturation effects of the SG magnetic circuit have been considered. The model has been implemented in the Synopys/Saber simulation environment. The modelling language MAST has been used to elaborate the SG model. The model exhibit a network with the same number of external terminals/ports...
-
Measurements of absolute elastic and vibrational cross sections for electron scattering from tetrahydrofuran
PublikacjaPrzedstawiono wstępne wyniki pomiaru absolutnych przekrojów czynnych na zderzenie elektronów z drobinami tetrahydrofuranu przy energii 10eV.
-
Measurements of inelastic electron scattering from molecular oxygen at high scattering angles
PublikacjaBadano procesy wzbudzenia oscylacyjnego poziomów v = 1-9 stanu podstawowego X3 sigma g oraz v=0 stanu wzbudzonego a1 delta g cząsteczki tlenu dla energii 10eV w przedziale kąta rozproszenia od 90 do 180 st. Dla pomiaru v=1 stanu X3 sigma g wyznaczono różniczkowy przekrój czynny na wzbudzenie. W pomiarach wykorzystano podwójny hemisferyczny spektrometr elektrostatyczny wykorzystujący nowozaprojektowane źródło lokalnego pola magnetycznego.