84 research outputs found
Coli bacteria inactivation by pulsed corona discharge in water
No full textThe inactivation of coli bacteria during pulsed corona discharge in the river water was investigated. The
bacterial suspension of volume 157 ml was polluted with E. coli and total coli with concentration of 230 cfu/100 cm3 and
1500 cfu/100 cm3, respectively. The processing was conducted in tube reactor with hollow needle-rod electrode system. The 2 min. of treatment caused decrease of total coli concentration by three orders of magnitude leaving only 3 cfu/100 cm3, The same final concentration was obtained for E. coli. Obtained energy efficiency was 0.15 cfu/J, which was a result of low bacteria initial concentration and too high specific energy density
Temperature Effects on Wet Electrostatic Scrubbing of Submicron Particles: Preliminary Results
No full textActa Physica
No full text1983 / 1-2. szám
Editor's Note
Elementary Particles and Fields
J. N. S. Kashyap: Electron in Einstein's unified field theory
Hiren B. Trivedi - L. K. Patel: Some Solutions of Einstein-Maxwell-Yukawa Fields
G. Callegari - L. Baroni: A Comparison between Rosen and Einstein Theory of Gravitation
B. Lukács: Solutions of the SU(1,) Spin Coefficient Equations with Non-Geodesic Eigenrays
Nuclear Physics
Ahmed Osman - S. S. Abdel Aziz: Rearrangement Heavy Ion Collisions with Two Nucleon Transfer
Ahmed Osman - S. A. Saleh: Heavy Ion Reactions with Single Neutron Transfer
Atomic and Molecular Physics
I. Kovács - B. P. Lacrov - M. V. Tyutchev - V. I. Ustimov: On the Intensity Anomalies in the Fulcher-a Bands of the H2 Molecule
L. A. Kaledin - E. A. Shenyavskaya - I. Kovács: Electronic Spectrum of NdO
Optics
S. Mokhtar - M. S. Shaalan - W. Osman: Enhanced Fabry-Perot Fringe Visibility over Long Path Differences Using Se-MgF2... Multilayer Coatings
Y. P. Singh - A. S. Shekhawat: Interaction of an Obliquely Incident Electromagnetic Wave with Collisional, Magnetized and Moving Plasma Slab
F. V. Bunkin - N. A. Kirichenko - B. S. Lukyanchuk - A. V. Simakhin - G. A. Shafeev - L. Nánai - I. Hevesi: On the Characteristics of the Oxidation of Vanadium Effected by a Continuous Beam of Laser Light
Liem Phan - L. Michailovits - I. Hevesi: Determination of the Refractive Index, the Absorption Coefficient and the Thickness of Amorphous V2O5 Thin Films from Reflectance Interference Spectra
Fluids, Plasmas and Electric Discharges
J. Mizeraczyk: Investigations of Longitudinal Hollow-Cathode Discharge
A. Bujko - C. Bojarski - R. Bujko: Investigation of Anti-Stokes Fluorescence in Mixed Rhodamine 6G-Malachite Green Systems
I. Merches: A Langrangian Formulation in Magnetofluid Dynamics
A. Raptis: MHD Natural Convection and Mass Transfer Through a Horizontal Porous Channel
Condensed Matter
M. F. Kotkata - A. M. Shamah - M. B. El-Den - M. K. El-Mously: An X-Ray Study of As-Se-Te Compounds
B. Pődör: Magnetoresistance and Electron SCattering Mechanisms in Gallium Arsenide
Book Reviews
1983 / 3-4. szám
General Physics
Taj K. Zadoo - G. Q. Sofi: Quark interaction energies and baryon magnetic moments
J. Wilczynski: Comments on the Doppler formulas for light deduced by Podlaha and Sjödin
Elementary Particles and Fields
T. Torma: The partial width of the Higgs Boson in H-W+W-g decay
Nguyen Ai Viet: Reparametrization of supergroup: superspace as a vectorspace
Atomic and Molecular Physics
S. V. J. Lakshman - S. Buddhudu: Optical absorption spectra of NdCl3 complexes in solution
I. Mayer: On the behaviour of the UHF method near the "critical point"
Fluids, Plasmas and Electric Discharges
K. Dobróka: Vibration of a viscoelastic fluid sphere
M. Abdel-Salam - M. Farghaly - S. Abdel-Sattar: DC corona discharge on monopolar bundle wires
Condensed Matter
A. Tawansi - S. El-Konsol - A. F. Basha - M. M. Morsi: Investigation of the electrical conductivity of g-irradiated sodium silicate glasses containing multivalence Cu ions
K. Stachulec: Debye-Waller factors for thin film diffraction
J. László - L. Füstöss - J. Giber: Composition changes in Ni-Au, Ni-Pd and Ni-Cu alloys due to sputtering - a computer simulation
M. F. Kitkata - M. K. El-Mously: A survey of amorphous Se-Te semiconductors and their characteristic aspects of crystallization
Interdisciplinary
T. Tarnóczy: Noise interference with oral communication
Book Review
Electrohydrodynamic Turbulent Flow in a Wide Wire-Plate Electrostatic Precipitator Measured by 3D PIV Method
No full textComparison of He-Cd' White-Light Laser Oscillations in Longitudinal and Transverse Hollow-Cathode Tubes
No full textAbstract-The results of a direct comparison of laser oscillations in two different hollow-cathode discharges, i.e., longitudinal and transverse, used for exciting the blue (441.6 nm), green (533.7 nm and 537.8 nm), and red (636.0 nm) lines of the Cd+-ion in an He-Cd mixture are presented. The design of the discharge tube, which allows a direct comparison of the laser properties of both discharges in the same hollow-cathode segments and laser cavity is shown. The results showed the superiority of the longitudinal hollow-cathode discharge in generating the blue, green, and red lines simultaneously. The transverse hollowcathode discharge more efficiently generates the green lines if the other laser lines are absent. This suggests the application of the longitudinal hollow-cathode discharge for white-light He-Cd+ lasers
Electrohydrodynamic flow in a wire-plate non-thermal plasma reactor measured by 3D PIV method
No full textThis work was aimed at measurements of the electrohydrodynamic (EHD)
secondary flow in a non-thermal plasma reactor using three-dimensional
particle image velocimetry (3D PIV) method. The wide-type non-thermal
plasma reactor used in this work was an acrylic box with a wire discharge
electrode and two plate collecting electrodes. The positive DC voltage was
applied to the wire electrode through a 10 MΩ resistor. The
collecting electrodes were grounded. The voltage applied to the wire
electrode was 28 kV. Air flow seeded with a cigarette smoke was blown along
the reactor duct with an average velocity of 0.6 m/s. The 3D PIV velocity
fields measurements were carried out in four parallel planes stretched along
the reactor duct, perpendicularly to the wire electrode and plate
electrodes. The measured flow velocity fields illustrate complex nature of
the EHD induced secondary flow in the non-thermal plasma reactor
Instantaneous and time-averaged velocity fields in a wide electrostatic precipitator
No full textNational audienceThis work was aimed at clarifying whether the electrohydrodynamic (EHD) flow in a relatively wide electrostatic precipitator (ESP) (width:height = 2) is 2- or 3- dimensional (3D). The previous our measurements of 3D timeaveraged flow velocity fields suggested that the flow in the ESP duct centre is almost 2-dimensional. In this paper we present both the 3D instantaneous and time-averaged flow velocity fields in a relatively wide ESP (width:height = 2). The ESP used in this work was an acrylic parallelepiped with a negatively polarized wire discharge electrode and two plate collecting electrodes. The velocity field was measured using Particle Image Velocimetry in the observation midplane along the ESP
Characteristics of a cw multiline He-Cd+ laser with transverse radio frequency excitation
No full textMulti - DBD actuator with floating inter - electrode for aerodynamic control
No full textIn this paper the use of a floating inter-electrode in a multi-DBD (dielectric barrier discharge) plasma actuator is described. The multi-DBD plasma actuators with floating inter-electrodes were investigated to get a longer DBD on a dielectric surface and to maximise generated net airflow. Our actuator was used to control the boundary layer flow separation around NACA0012 airfoil model. The results of our investigations suggests that multi-DBD actuators with floating inter-electrodes can be attractive for aerodynamic purposes
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