Wyniki wyszukiwania - BazTech

1

Cienkie warstwy izolacyjne stosowane w aplikatorach do ablacji tkanek metodą nieodwracalnej elektroporacji

Nowak Grzegorz, Mocha Jan, Kaczmarek Marcin

Elektronika : konstrukcje, technologie, zastosowania

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2024

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Vol. 65, Nr 7

27--29

PL

W artykule przedstawiono opracowaną wstępną postać geometryczną uniwersalnego aplikatora przeznaczonego do badań nad elektroporacją oraz możliwość zastosowania cienkich warstw tlenków metali pełniących rolę izolacji na powierzchni jego elektrody.

EN

The paper presents the initially developed geometric form of a universal applicator intended for electroporation and the possibility of using the metal oxide thin film acting as insulation on the surface of its electrode.

2

Przegląd domieszek do żywicy fenolowej pod względem użycia ablacyjnego

Rybakiewicz Łukasz

Problemy Techniki Uzbrojenia

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2023

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R. 52, z. 166

67--97

PL

W artykule zebrano przebadane domieszki do żywicy fenolowej i kompozytów węglowo-fenolowych w celu zwiększenia ich stabilności termicznej, które były badane w kompozytach pod względem właściwości termicznych, z możliwością użycia materiału do celów ablacyjnych. Opisano zjawisko ablacji, procesy zachodzące w żywicy fenolowej podczas oddziaływania temperatury, produkcję włókien oraz ich wpływ zawartości na ablację. Przestawiono, jak domieszki wpływają na stabilność termiczną oraz proces utwardzania żywicy.

EN

The article collects tested additives for phenolic resin and carbon-phenolic composites in order to increase their thermal stability. The article presents additives that were tested in composites in terms of thermal properties, with the possibility of using the material for ablative purposes. The phenomenon of ablation, the processes occurring in the phenolic resin under the influence of temperature, the production of fibers and the effect of their content on ablation, how additives affect the thermal stability and the process of resin curing are described.

3

Computer modelling of the ablation casting process and prediction of the strength properties of AC-42000 castings

Małysza Marcin, Puzio Sabina, Major-Gabryś Katarzyna, Głowacki Mirosław, Wilk-Kołodziejczyk Dorota, Kamińska Jadwiga

Computer Methods in Materials Science

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2022

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Vol. 22, No. 2

79--88

EN

The demand for castings with superior properties has compelled the development and optimization of manufacturing technologies. By further developing already known techniques, we are able to contribute to the introduction of new research possibilities. The article presents the methodology of conducting simulation tests of the gravity casting process into sand moulds with the use of ablation. The ablation technique consists in spraying water through evenly spaced nozzles onto a mould into which the liquid casting alloy has been poured. The conducted research focuses on an alloy from the group of Al-Si alloys. In order to compare the effects of different techniques, additional tests were carried out for gravity casting into sand and metal die moulds. At the same time, virtual experiments were conducted to develop a simulation methodology for ablation casting technology, taking into account mould degradation. Additionally, the possibility of predicting the final mechanical properties of various manufacturing technologies was tested. Destructive tests were carried out to determine the mechanical properties in the cast samples, as well as microstructure tests and secondary dendrite spacing. The results of the mechanical tests are compared with the predicted simulation properties.

4

An analysis of the spatial and temporal changes on the Jakobshavn Glacier (Greenland) using remote sensing data

Olszewska Katarzyna, Borowiec Natalia

Geology, Geophysics and Environment

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2021

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Vol. 47, no. 4

187--201

EN

This article presents the problem of climate warming and the effect of melting ice caps. The problem of climate warming is discussed in two stages. In the first stage, the factors affecting global warming are discussed in detail and the effects and risks of ablation extensively described. Analyses were conducted on data available online from NASA and Carbon Dioxide Information Analysis Center. The Greenland area (Jakobshavn Glacier) was selected to visualize glacier calving front changes. The analysis of changes was performed on the selected satellite images covering the summer period (June to September) provided by the Landsat program. Then, the changes in the position of the calving front of the Jakobshavn Glacier were visualized for the period 1985–2020, with a repeatability of every 5 years. Thus, our results addressed the challenges of environmental changes to remote sensing data processing. In addition to the visualization, a surface summary of these changes was presented in the study. The results were discussed in the context of climate change data processed by means of the GIS method. Furthermore, an analysis of the effects of greenhouse gases on glacier surface changes was performed. In summary, the results reveal that satellite imagery is an excellent source of data on which to visualize glacier calving rates, comparing individual layers showing the position of the glacier calving front and calculating the area of calved ice.

5

Ablation of single-crystalline cesium iodide by extreme ultraviolet capillary-discharge laser

Wild Jan, Pira Peter, Burian Tomas, Vysin Ludek, Juha Libor, Zelinger Zdenek, Danis Stanislav, Nehasil Vaclav, Rafaj Zdenek, Nevrly Vaclav, Dostal Michal, Bitala Petr, Kudrna Pavel, Tichy Milan, Rocca Jorge J.

Nukleonika

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2020

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Vol. 65, No. 4

205--210

EN

Extreme ultraviolet (XUV) capillary-discharge lasers (CDLs) are a suitable source for the efficient, clean ablation of ionic crystals, which are obviously difficult to ablate with conventional, long-wavelength lasers. In the present study, a single crystal of cesium iodide (CsI) was irradiated by multiple, focused 1.5-ns pulses of 46.9-nm radiation delivered from a compact XUV-CDL device operated at either 2-Hz or 3-Hz repetition rates. The ablation rates were determined from the depth of the craters produced by the accumulation of laser pulses. Langmuir probes were used to diagnose the plasma plume produced by the focused XUV-CDL beam. Both the electron density and electron temperature were sufficiently high to confirm that ablation was the key process in the observed CsI removal. Moreover, a CsI thin film on MgO substrate was prepared by XUV pulsed laser deposition; a fraction of the film was detected by X-ray photoelectron spectroscopy.

6

The analysis of the properties of ablative composites with carbon and MMT nanofiller reinforcement

Szczepaniak R., Czubak K., Przybyłek P., Stabryn S.

Journal of KONES

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2017

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Vol. 24, No. 4

305--312

EN

One of the most important parameters in the selection of composite materials used for the protection of avionics instruments exposed to high temperatures are ablative properties. They constitute the main criterion in determining the composition and thickness of the protective material. In this article, the authors determine the ablative properties of a polymer matrix with carbon reinforcement and check the effect of using the MMT additive (montmorillonite) on the change in the resistance to the impact of a high heat flux. The tested materials play an important role in the defence, aviation and space industry. Ablative materials are the only ones to protect the rear wall surface from an excessive temperature rise while using a thin insulation wall. For the sake of the research, we prepared a series of samples of the composite produced with epoxy resin LH 145, H 147 hardener, carbon fibre mats and the addition of MMT. The prepared samples were tested on a unique stand in laboratory conditions. The findings obtained from the experimental testing after a detailed analysis were tabulated and presented in the form of graphs. The authors determined the ablative loss of mass of the individual samples, compared their internal temperatures, which had been measured with thermocouples, as well as the temperature on the backside of the sample. In addition, in order to complement the experimental studies of determining the temperature rise on the rear surface, the authors used a thermal imaging camera. Besides, they took photos of different layers of the examined structure, which had been exposed, to a heat stream, by means of a scanning microscope.

7

Optimization of multi-slot coaxial antennas for microwave thermotherapy based on the S11-parameter analysis

Gas P.

Biocybernetics and Biomedical Engineering

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2017

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Vol. 37, no. 1

78--93

EN

The underlying aim of presented article is to determine the optimal location and sizes of the air gaps inside a multi-slot coaxial antenna with 50-ohm feed based on the S11-parameter characteristics of microwave applicator to get the best antenna impedance matching to the treated tissue. The next step is the selection of the limit levels of the antenna input power, for which temperature of the tissue do not exceed known therapeutic elevations for microwave therapies at hyperthermic and ablation temperatures. The proposed approach provides a relatively simple method for optimization of the location and size of slots in the antenna structure. The proper choice of limit values of total antenna input power enables appropriate adjustment of temperature of the target tissue to preserve optimal cancer treatment.

8

Changes to the SF6 outflow area in the nozzle of a high voltage auto-pneumatic circuit breaker during a short-circuit current interruption

Sibilski H., Dzierżyński A., Hejduk A., Kuraszkiewicz J.

Prace Instytutu Elektrotechniki

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2016

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Z. 273

25--34

EN

The paper presents a calculation method for the SF6 outflow area across the critical cross-section of the nozzle in an HV puffer circuit breaker during the interruption of a short-circuit current. The presence of an electrical arc can cause clogging of the nozzle at the moment when the arc cross section is close to the nozzle throat area. The clogging depends on the instantaneous current value and can cause ablation of the nozzle material. In the long term it can result in a change in the nozzle dimensions which adversely affects the interrupting ability of the circuit breaker.

PL

W artykule podano sposób obliczania wypływu gazu SF6 w przekroju krytycznym dyszy w wyłącznikach autopneumatycznych. W wyniku działania łuku elektrycznego podczas wyłączania prądu zwarciowego może dochodzić do zatykania dyszy i wzrostu ciśnienia, a po wielokrotnych wyłączeniach w wyniku wysokiej temperatury łuku może wystąpić deformacja dyszy i pogorszenie własności łączeniowych. Do obliczeń przyjęto wyłącznik z napędem pneumatycznym, posiadający komorę roboczą i tłumiącą. Po rozejściu się styków zapala się łuk, który wydłużony do przekroju krytycznego dyszy zatyka częściowo dyszę zwiększając w efekcie ciśnienie w objętości dyszy wskutek wzrostu temperatury gazu. Po wielokrotnych wyłączeniach prądu zwarciowego wysoka temperatura powoduje degradację powierzchni w przekroju krytycznym dyszy i w efekcie powiększenie przekroju dyszy, co może zmienić parametry łączeniowe wyłącznika.

9

Zastosowanie laserów włóknowych w elektronice i technice mikrosystemów

Pawlak R., Tomczyk M., Walczak M.

Mechanik

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2016

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R. 89, nr 2

78--82

PL

Przedstawiono wybrane wyniki zastosowania lasera włóknowego w wytwarzaniu elementów mikrosystemów i biernych elementów elektroniki o submilimetrowych wymiarach z materiałów półprzewodnikowych, ceramicznych i przewodzących. Technologie laserowe w tej skali wykorzystują ablacyjne oddziaływanie wiązki laserowej. Optymalizowanie procesów w dużej mierze było wspierane modelowaniem komputerowym. Wyniki potwierdzają możliwość precyzyjnej mikroobróbki za pomocą lasera generującego impulsy nanosekundowe.

EN

Selected results of the use of fiber laser for producing elements of microsystems and passive electronic elements of submillimeter dimensions in semiconductor, ceramic and conductive materials are presented. Laser technology at this scale uses ablative interaction of laser beam. Optimization of processes was significantly supported by computer modelling. The results confirm the possibility of precise micromachining using a laser with nanosecond pulses.

10

Computational and experimental model of electroporation for human aorta

Filipovic N., Saveljic I., Jovicic N., Tanaskovic I., Zdravkovic N.

Acta of Bioengineering and Biomechanics

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2016

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Vol. 18, no. 4

15--20

EN

Purpose: In this study the computational and experimental electroporation model with human aorta tissue is made in order to examine the reduction of smooth muscle cells. Methods. The segments in native state of the aorta are treated by electroporation method through a series of electrical impulses from 50 V/cm to 2500 V/cm. For each patient we analyzed one sample with and one sample without electroporation as a control. In the computational study, electrical field distribution is solved by the Laplace equation. The Pennes Bioheat equation without metabolism and blood perfusion heating is used to solve heat transfer problems. Different conductivity values are used in order to fit the experimental results. Results: Experimental histology has shown us that there are a smaller number of vascular smooth muscle cells (VSMC) nuclei at the tunica media, while the elastic fibre morphology is maintained 24 h after electroporation. In the computational model, heat generation coupled with electrical field is included. The fitting procedure is applied for conductivity values in order to make material properties of the aorta tissue. The fitting procedure gives tissue conductivity of 0.44 [S/m] for applied electrical field of 2500 V/cm. Conclusions: Future studies are necessary for investigation of a new device for in-vivo ablation with electroporation of plaque stenosis. It will open up a new avenue for stenosis treatment without stent implantation.

11

Dobór technologii formy dla zmodyfikowanej metody ablacyjnego odlewania

Izdebska-Szanda I., Angrecki M., Palma A.

Prace Instytutu Odlewnictwa

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2015

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T. 55, nr 2

55--66

PL

W artykule przedstawiono wyniki prób i badań przeprowadzonych z różnymi dodatkami do mas formierskich opartych o wodorozpuszczalne spoiwa nieorganiczne do ablacyjnego wybijania. W wyniku przeprowadzonych badań technologicznych i prób stanowiskowych wytypowano skład masy, zapewniającej dobrą jakość odlewów i skuteczne wybijanie form z zastosowaniem chłodzenia ablacyjnego. Opracowany skład masy zapewnia odpowiednio dużą wytrzymałość wykonywanych form i jednocześnie masa ta jest podatna na destrukcyjne działanie medium chłodzącego (wody). Przeprowadzone próby dają zadowalające wyniki i dają nadzieję na możliwość stosowania tej metody w przemyśle.

EN

The article presents the results of tests and studies carried out within the framework of statutory activities on various additives to moulding sands based on water-soluble inorganic binders for ablative knocking out of castings. As a result of technological research and bench tests, the composition of moulding sand providing high quality castings and easy knocking out of moulds combined with ablative cooling was selected. The developed moulding sand composition produces moulds which not only possess the required high strength but are also susceptible to the destructive effect of a cooling medium (water). The results of conducted experiments are satisfactory and raise hope as to further possible use of this method in the industry.

12

Laser nanosoldering of golden and magnetite particles and its possible application in 3D printing devices and four-valued non-volatile memories

Jaworski J, Gawłowski G.

Management and Production Engineering Review

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2015

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Vol. 6, No. 4

43--54

EN

In recent years the 3D printing methods have been developing rapidly. This article presents researches about a new composite consisted of golden and magnetite nanoparticles which could be used for this technique. Preparation of golden nanoparticles by laser ablation and their soldering by laser green light irradiation proceeded in water environment. Magnetite was obtained on chemical way. During experiments it was tested a change of a size of nanoparticles during laser irradiation, surface plasmon resonance, zeta potential. The obtained golden - magnetite composite material was magnetic after laser irradiation. On the end there was considered the application it for 3D printing devices, water filters and fourvalued non-volatile memories.

13

Możliwości wykorzystania włókien aramidowych w ablacyjnych osłonach termoochronnych

Kucharczyk W., Nachyła P., Krzyżak A.

Logistyka

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2014

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nr 5

886--894

PL

W artykule przedstawiono wyniki badań procesu ablacji materiałowej epoksydowych laminatów szklano-aramidowych pod kątem możliwości ich zastosowań na termoochronne osłony autonomiczne do zabezpieczania maszyn i urządzeń technicznych oraz budowli i elementów infrastruktury budowlanej w warunkach zagrożenia pożarowego lub krótkotrwałego, intensywnego oddziaływania wysokotemperaturowego strumienia cieplnego. Właściwości termoochronne laminatów modyfikowano zmianą ich składów fazowych. Na materiał osnowy epoksydowej użyto żywice Epidian 601 sieciowaną albo utwardzaczem dwumianowym IDA (53 ns) albo utwardzaczem TFF (27 ns). Wzmocnieniem włóknistym były tkaniny aramidowe: Nomex T993 o gramaturze 720 g/m2 oraz Kevlar o gramaturze 300 g/m2, jak również tkanina szklana o gramaturze 300 g/m2. Badania zostały oparte o statyczne metody planowania doświadczeń. Określono jakościowy i ilościowy wpływ komponentów na termochronne właściwości kompozytów epoksydowych: średnią temperaturę maksymalną tylnej powierzchni ścianki próbki ablacyjnej oraz średni względny ablacyjny (erozyjny) ubytek masy.

EN

The paper presents the results of ablation studies of aramid epoxy laminates in terms of the woven fabrics fillers type influence on selected thermo-protective properties of composite components for use on machines, technical equipments and modern building constructions or in tunnelling designing thermal-protections. As a reinforcement were used layers of Nomex fabrics of a basis weight 720 g/m2 and Kevlar fabrics of a basis weight 300 g/m2, as well as glass fabrics of a basis weight 300 g/m2 – all woven fabrics arranged in a matrix of epoxy resin Epidian 601 crosslinked with hardeners IDA or TFF, at room temperature. The composites were treated with hot combustion gases to determinate the temperature profiles across the studied samples (cubes 10x25x35 mm). Carbonization of the crosslinked matrix was observed. As the main parameter to estimate the quantitative and qualitative effect of aramid fiber fillers on ablative thermo-protective properties, the maximum temperature of the back-side surface of the wall sample ts was determined and compared. Moreover, the relative ablation mass waste Ua was also specified.

14

Zużywanie ablacyjne i ścierne laminatów fenolowo-formaldehydowych - szklanych z napełniaczami proszkowymi

Kucharczyk W.

Eksploatacja i Niezawodność

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2012

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Vol. 14, No. 1

12-18

PL

Przedstawiono wyniki badań zużywania kompozytów polimerowych: ablacyjnego, po 30 s oddziaływania wysokotemperaturowego strumienia gazów palnych oraz ściernego, po 1000 s tarcia próbki luźnym ścierniwem w testerze T-07. Doświadczeniom poddano szklane laminaty fenolowo-formaldehydowe z napełniaczami proszkowymi: korundem Al2O3 oraz pyłem węglowym C. Określono jakościowy i ilościowy wpływ komponentów na wartości zużywania: średnią liniową szybkość ablacji oraz średnią masową intensywności zużywania Iz. Stwierdzono, że kompozyty o składach fazowych zapewniających mniejszą intensywność zużywania ściernego charakteryzują się większą szybkością zużywania ablacyjnego.

EN

This paper reports the results of wearing out polymer composites: the ablative wear, after 30 s of treating with hot combustion gases, as well as the abrasive wear, after 1000 s of friction using the loose abradant in the T-07 tester. The specimens were made of phenolic-formaldehyde matrix, glass fabrics-reinforcement and powder fillers: the corundum Al2O3 and the carbon powder C. It was qualified the qualitative and the quantitative effect of components on the average linear rate of ablation ?? and the average mass intensity of abrasive wear Iz. It was proved, that composites with the smaller intensity of abrasive wear Iz are characterized by bigger rate of ablative using up.

15

Wybrane przykłady powierzchniowego teksturowania laserowego

Napadłek W., Burakowski T.

Inżynieria Materiałowa

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2011

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Vol. 32, nr 4

633-636

PL

W artykule przedstawiono przykłady zastosowania różnego rodzaju powierzchniowego teksturowania laserowego: bezprzetopieniowego utwardzającego, przetopieniowego oraz ubytkowego (grawerowanie). Pokazano wpływ mikroobróbki laserowej na topografię warstwy wierzchniej wybranych materiałów konstrukcyjnych na przykładzie stali 41Cr4, stopu aluminium ENAW-2618A oraz żeliwa szarego EN-GJL300. Przedstawiono możliwości zastosowania tak wytworzonych tekstur na elementach maszyn i w reklamie, a także kierunki rozwoju teksturowania laserowego w inżynierii powierzchni.

EN

The article presents examples of various types of laser surface texturing: without melt hardfacing, melt and decreasing (engraving). Showed laser micromachining effect on the topography the surface layer of selected construction materials for example steel 41Cr4 , aluminum alloy ENAW-2618, and cast iron EN-GJL300. Also presents the possibility of using made by laser texture on machine elements and in advertising and also presents trends the laser texturing in surface engineering.

16

Rodzaje powierzchniowego teksturowania laserowego

Burakowski T., Napadłek W.

Inżynieria Materiałowa

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2011

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Vol. 32, nr 4

356-358

PL

W artykule przedstawiono ideę powierzchniowego teksturowania laserowego w inżynierii powierzchni, autorski podział oraz schematy ideowe różnych tekstur. Przedstawiono podstawowe definicje pojęć dotyczących teksturowania powierzchniowego.

EN

The idea of laser surface texturing in surface engineering is introduced in the article, the author's classification and the ideological patern of various textures. The basic definitions of surface texturing.

17

Monitoring of Hans Glacier movement dynamics (Hornsund Sw Spitsbergen, Svalbard)

Walo J., Puczko D., Adamek A., Węzka K., Malinowski Z., Rajner M.

Reports on Geodesy

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2006

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z. 1/76

173-179

EN

Fast and exact GPS measurements are independent from weather and season of the year. For achieving reliable results, survey should be conducted at least once a month and at least twice a month in summer season (June-September). GPS RTK is suggested for pole movement determination. In case of real-time corrections limited availability (i.e. screening by mountains) using Rapid Static is a good choice. To minimize multipath error antenna should be placed at least 0,5m eccentric to pole and at 1 m height. Ablation pole movement vectors of Hans glacier indicate few relations. Most important feature is speed being about 10 times greater in foremost zone of glacier than in lateral parties of glacier. Measurements of lateral profile indicate that, accordingly to expectations, surface speed of glacier is greater in middle axis comparing to the edges or glacier.

18

Technologie laserowe w inżynierii materiałowej

Kusiński J.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Mechanika

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2005

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Z. 82

27-32

PL

Na podstawie badań własnych oraz współpracowników, jak również obserwacji poczynionych podczas licznych konferencji krajowych i zagranicznych, analizy tematyki grantów KBN oraz literatury w artykule omówiono podstawy procesów technologicznych, w których wykorzystywane są lasery. Wynikami badań własnych zilustrowano procesy: nanokrystalizacji oraz ablacji laserowej.

EN

On the basis of personal and coworkers research, as well as observations made during several national and international conferences dedicated to thelasers and analysis of literature, the basics of different laser technologies are described in the paper. The paper presents mainly two techniques: laser nanocrystallization of amorphous materials and laser ablation.

19

Zróżnicowanie albedo Lodowca Scotta (W Spitsbergen)

Siwek K., Gluza A., Bartoszewski S.

Problemy Klimatologii Polarnej

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2004

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nr 14

127-132

EN

The aim of the present study was the quantitative determination of ?albedo? which is a significant factor influencing the balance of short-wave radiation. The value of surface albedo allows to determine its role in the heat balance of the active surface which in turns influences the ablation level. Studies on the accumulation and ablation conditions of the snow cover commenced on Scott?s Glacier in 1987. On average, the thickness of the frontal part decreased by 75 m, i.e. 2.7 m annually. Decession of the glacier was confirmed by studies carried out in 2001 during which it was found that Scott?s Glacier had decreased in its surface area by over 10% in the period 1986?2001. Three types of active surfaces, i.e.: land, ice and water, play a significant role in the radiation balance of the Arctic. During the summer months practically all the heat reaching the surface of the earth is taken up in thawing the ice. In the summer of 2001, a substantial variation of albedo occurred on Scott?s Glacier. The above changes depended to a large extent on the physical properties of the glacier?s surface. High spatial differentiation of albedo was also observed in the period studied (i.e. the summer of 2001). The lowest values (15-25%) occurred at the front of the glacier which was covered with ice and numerous kryokonite smelts filled with water or polluted with morenic or eolic material. Somewhat higher values (40-60%) were found in the supraglacial river valleys and in the zone of surface water deposits as they turned into slush. The highest albedo values occurred in the firn field where leveled snow, often firn, or fresh wind-blown snow was deposited (60-85%). After the precipitation of the fresh, clean snow, albedo increased and reached values above 88%.

20

Wpływ warunków pogodowych na zmionność ablacji lodowców Waldemara i Ireny (NW Spitsbergen) w sezonie latnim 2003 roku

Sobota I.

Problemy Klimatologii Polarnej

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2004

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nr 14

95-106

EN

The paper presents the results of meteorological measurements carried out in the Kaffioyra Plain in the summer season of 2003. The main meteorological observations were conducted in N.Copernicus Polar Station, situated in northern part of the Kaffioyra (NW Spitsbergen). The paper also presents the results of ablation measurements on the Waldemar Glacier and Irene Glacier, which are located at Kaffioyra Region. The mean air temperature in the summer period (21.07. to 31.08.2003) was 6.1°C and was visibly higher then the long-term average. The sum of precipitation in this time was 74 mm and was higher then the long-term average. The comparison between summer season 2003 and mean values from the years 1975-2003 in the common period shows that this season was characterised by air temperature higher then many year?s values. The Waldemar Glacier and Irene Glacier are located in the northern part of the Oscar II Land, northwestern Spitsbergen. In spite of small areas of these glaciers, there is great spatial variation of ablation. Both Waldemar Glacier and Irene Glacier area and the height difference between the accumulation zone and the ablation area are relatively small. Nevertheless, spatial variation of ablation is observed. In this summer season the highest ablation values of Waldemar Glacier were noted in the ablation area of the glacier up to the altitude of about 250 m a.s.l., as well as at the foot of its medial moraine. The highest ablation values of Irene Glacier were noted in the ablation area of the glacier up to the altitude of about 300 m a.s.l.. During the analysed season a high average air temperature was observed. It resulted in increased ablation if compared to the previous seasons. Average air temperature and local glacier conditions were accepted as the main factors of ablation. The glacier average total summer ablation of Waldemar Glacier was 118.1 cm w.e. And Irene Glacier 111.1 cm w.e., respectively. The main meteorological parameters, which have an influence on ablation, are air temperature, wind velocity, insolation and participation. But it must be stressed that these parameters are clearly determined by local conditions of glaciers such as hypsometry, solar exposition, slope as well as density and the course of supraglacial streams.