Search Results - "Vutova, K."

Electron-Beam Melting and Reuse of Metallic Materials by Vutova, K., Vassileva, V.

“…We study the processes and mechanisms of electron-beam melting (EBM) used in the production of high-purity metals. We formulate the requirements that should be…”
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Human dirofilariasis in Bulgaria between 2009 and 2018 by Velev, V, Vutova, K, Pelov, T, Tsachev, I

“…Summary Autochthonous Dirofilaria repens infections have been found in dogs and other carnivores in most European countries. In the same countries, reports of…”
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A Case of Fasciolosis in a 11-Year-Old Syrian Immigrant Boy by Velev, V, Vutova, K, Pavlova, M, Mangarov, Iliya

“…Fasciolosis is a chronic parasitic disease caused by two species of liver trematodes, Fasciola hepatica and Fasciola gigantica, which infest ruminants and…”
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Investigation of electron beam melting and refining of titanium and tantalum scrap by Vutova, K., Vassileva, V., Koleva, E., Georgieva, E., Mladenov, G., Mollov, D., Kardjiev, M.

“…In this paper obtained experimental and theoretical data for Ti and Ta electron beam melting regeneration from waste products are presented. Different…”
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Thermal Processes in Electron-Beam Treatment of Metals by Vutova, K., Donchev, V., Vassileva, V., Mladenov, G.

“…An amended quasi-stationary model of heat transfer in a metallic ingot hardening in a water-cooled crucible after electron-beam melting and refining of the…”
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Process simulation at electron beam lithography on different substrates by Vutova, K., Mladenov, G., Raptis, I., Olziersky, A.

“…In this paper a general description of Monte Carlo simulation algorithm for modelling of exposure and development processes in the case of electron beam…”
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The study of vacuum influence on spatial-temporal dependence of thermal distributions during laser-optical components interaction by Oane, M., Vutova, K., Mihailescu, I.N., Donchev, V., Florescu, G., Munteanu, L., Georgescu, G.

“…This paper deals with the evaluation of vacuum influence on the spatial-temporal laser thermal field distributions in optical components during the interaction…”
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Computer simulation of micro- and nano- structures at electron and ion lithography by Vutova, K, Mladenov, G

“…In this paper a review concerning the main steps of a complete mathematical model for the simulation of the exposure and development process in electron and…”
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Computer simulation of micro- and nano-structures at electron and ion lithography by Vutova, K, Mladenov, G

“…In this paper a review concerning the main steps of a complete mathematical model for the simulation of the exposure and development process in electron and…”
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Oxygen removal during electron beam drip melting and refining by Vassileva, V., Mladenov, G., Vutova, K., Nikolov, T., Georgieva, E.

“…The release of oxygen from metals and alloys is an important aim of numerous electron-beam melting applications. The extraction of non-metallic inclusions…”
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Analysis of the Thermodynamic Conditions of Refining during Electron Beam Melting of Refractory Metals by Vassileva, V., Vutova, K., Mladenov, G.

“…The electron beam melting and refining (EBMR) decreases the concentration of an impurity element through evaporation, removal of dissolved gases, lessening the…”
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Epidemiological and clinical patterns of trichinellosis in Bulgaria from 1995 to 2002 by Petkova, S., Mihov, L., Vutova, K., Tsenov, I., La Rosa, G., Pozio, E.

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Simulation of the energy absorption and the resist development at sub-150 nm ion lithography by Vutova, K., Mladenov, G., Tanaka, T., Kawabata, K.

“…The simulation tools for sub-150 nm ion beam lithography require more adequate models of the ion scattering, the energy losses and the development process…”
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Sensitivity, contrast and development process in electron and ion lithography by Vutova, K., Mladenov, G.

“…The dependence of the resist solubility rate S on the average exposure dose D (or on the adsorbed energy per 1 U resist volume) makes it possible to optimise…”
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Simulation of the energy absorption and the resist development at sub-150nm ion lithography by Vutova, K., Mladenov, G., Tanaka, T., Kawabata, K.

“…The simulation tools for sub-150nm ion beam lithography require more adequate models of the ion scattering, the energy losses and the development process…”
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The role of ingot–crucible thermal contact in mathematical modelling of the heat transfer during electron beam melting by Koleva, E, Vutova, K, Mladenov, G

“…The heat exchange of different interfaces between the casting ingot and both the water-cooled crucible and the pulling mechanism is studied. Computer…”
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A trichinosis outbreak caused by wild boar meat in Turkey by Heper, Y., Yilmaztepe, F., Komitova, R., Akalin, H., Vutova, K., Helvaci, S.

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Why light ions in future ion lithography? by Vutova, K, Mladenov, G

“…The ranges and the average quadratic deviation of some light ions (H +, He +, B +, Ga + and Ar +) in polymethyl methacrylate are calculated over a wide energy…”
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Calculation of weld parameters and thermal efficiency in electron beam welding by Koleva, E., Mladenov, G., Vutova, K.

“…Using the model of quasi-steady thermal distribution in a solid sample, generated by a linear heat source, moving at constant welding velocity, values of the…”
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Congenital toxoplasmosis: eye manifestations in infants and children by Vutova, K., Peicheva, Z., Popova, A., Markova, V., Mincheva, N., Todorov, T.

“…The eye manifestations of congenital toxoplasmosis were investigated in 38 infants and children. Diagnosis of the congenital ocular lesions was established…”
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