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Wyszukujesz frazę "Varga, A." wg kryterium: Autor


Tytuł:
Current and potential oncomarkers in diagnosing breast cancer
Obecnie używane i potencjalne markery nowotworowe w diagnostyce raka piersi
Autorzy:
Bilecová-Rabajdová, M.
Urban, P.
Grešová, A.
Varga, J.
Gregová, K.
Stupák, M.
Mareková, M.
Powiązania:
https://bibliotekanauki.pl/articles/271594.pdf
Data publikacji:
2012
Wydawca:
Górnośląska Wyższa Szkoła Pedagogiczna im. Kardynała Augusta Hlonda
Tematy:
rak piersi
diagnostyka
markery molekularne
markery nowotworowe TVMs
breast cancer
diagnostics
molecular markers
tumour vascular markers
Opis:
Breast cancer is a very serious disease from both an economical and social point of view, because of its high incidence and mortality, as well as its prevalence. Genetic and epigenetic changes as well as the resultant deregulation of mechanisms that affect cellular processes are reflected in the final stage, like significant variability in phenotype. These changes have multiple factors in clinical, morphological but also molecular terms, and they greatly affect the possibility of accurate diagnosis of breast cancer in its early stages. Since no combination of clinical examination, mammography and ultrasonography together with CT and MRI can achieve 100% sensitivity, clinical practice is supported with diagnostic methods based on the monitoring of tumour markers with the emphasis on molecular markers. This review describes the most common molecular markers already used for earlier clinical diagnostics and also proposes new possible markers from the tumour vascular markers group. Any new oncomarkers to improve diagnostic sensitivity and specificity will be of great benefit, and in clinical practice, they may provide an opportunity for early diagnostic and therapeutic intervention, and subsequently better prognosis for the patient as well.
Rak piersi jest bardzo poważną chorobą, zarówno z punktu widzenia ekonomicznego jak i społecznego, ze względu na dużą zachorowalność i umieralność, a także na zakres jego występowania. Zmiany genetyczne i epigenetyczne, jak również wynikająca z nich deregulacja mechanizmów, które wpływają na procesy komórkowe są odzwierciedlone w ostatnim stadium choroby, jak znaczna zmienność fenotypu. Zmiany te mają wiele przyczyn z punktu widzenia klinicznego, morfologicznego, ale również molekularnego oraz znacznie wpływają na możliwość dokładnego rozpoznania raka piersi w jego wczesnych fazach. Ponieważ żadna kombinacja badań klinicznych, mammografii i USG wraz z tomografią komputerową i obrazowaniem magnetyczno-rezonansowym nie może osiągnąć 100% czułości, praktyka kliniczna jest wspierana metodami diagnostycznymi opartymi na monitoringu markerów nowotworowych, ze szczególnym uwzględnieniem markerów molekularnych. Niniejsza recenzja opisuje najbardziej typowe markery molekularne wykorzystywane we wczesnej diagnostyce klinicznej, a także proponuje nowe potencjalne markery z grupy markerów nowotworowych TVMs . Wszelkie nowe markery nowotworowe poprawiające czułość i dokładność diagnostyki będą bardzo pomocne, a w praktyce klinicznej mogą pozwolić na wczesną diagnostykę i leczenie, co polepszy także rokowania pacjenta.
Źródło:
Journal of Ecology and Health; 2012, R. 16, nr 3, 3; 138-143
2082-2634
Pojawia się w:
Journal of Ecology and Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oxychilus (Mediterranea) hydatinus (Gastropoda: zonitidae) new for Slovakia, with notes on its distribution in Hungary
Autorzy:
Dvorak, L.
Horsak, M.
Varga, A.
Powiązania:
https://bibliotekanauki.pl/articles/84090.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Opis:
The first records of Oxychilus hydatinus (Rossmässler, 1838) from Slovakia are reported. The material was identified based on a detailed comparative study of shell morphology and internal structure of penis. The Slovak sites represent the northernmost occurrence of this species.
Źródło:
Folia Malacologica; 2004, 12, 3
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ni_2FeSi Heusler Glass Coated Microwires
Autorzy:
Galdun, L.
Ryba, T.
Prida, V.
Hernando, B.
Zhukova, V.
Zhukov, A.
Vargová, Z.
Varga, R.
Powiązania:
https://bibliotekanauki.pl/articles/1032750.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.Be
72.20.Lp
Opis:
We report on fabrication, structural and magnetic properties of novel Heusler-type glass coated Ni₂FeSi microwires that were prepared by the Taylor-Ulitovsky method, having a metallic nucleus diameter about 3.9 μm and total sample diameter of 39 μm. This single step and low cost fabrication technique offers to prepare up to km of glass-coated microwires starting from few g of cheap elements for diverse applications. The X-ray diffraction data from the metallic nucleus indicates L2₁ crystalline structure (a=5.563 Å), with a possible DO3 disorder. Magnetic measurements determined the Curie temperature well above the room temperature (770 K) together with uniform easy magnetization axis of the metallic core, which predisposes this material to a suitable candidate for spintronic applications.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 851-853
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Study of Magnetization Process in Amorphous FeNiSiB Microwires
Autorzy:
Gamcova, J.
Varga, R.
Hernando, B.
Zhukov, A.
Powiązania:
https://bibliotekanauki.pl/articles/1534004.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Kj
75.60.Ej
75.60.Jk
Opis:
We have studied the magnetization process in amorphous $Fe_{49.6}Ni_{27.9}Si_{7.5}B_{15}$ microwire. It was found that the hysteresis mechanism consists of two contributions: magnetoelastic and structural relaxation. It was shown that at low frequencies, the magnetization process is controlled mainly by the structural relaxation. At higher frequencies (above 50 Hz), the relaxation effect disappears and switching field is determined mainly by the magnetoelastic contribution. Moreover, the effect of thermal treatment at temperature 300°C has been studied. As-cast microwire is almost unsensible to the applied tensile stress since the applied stresses are lower than that induced during production. After annealing, the stresses relax and stress sensibility of microwires increases.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 807-808
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Positronium Trapping in Porous Solids: Means and Limitations for Structural Studies
Autorzy:
Kajcsos, Zs.
Liszkay, L.
Duplâtre, G.
Varga, L.
Lohonyai, L.
Pászti, F.
Szilágyi, E.
Lázár, K.
Kótai, E.
Pál-Borbély, G.
Beyer, H. K.
Caullet, P.
Patarin, J.
Azenha, M. E.
Gordo, P. M.
Lopes Gil, C.
de Lima, A. P.
Ferreira Marques, M.
Powiązania:
https://bibliotekanauki.pl/articles/2042216.pdf
Data publikacji:
2005-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
36.10.Dr
78.70.Bj
61.43.Gt
Opis:
Positron annihilation techniques are used for the structural investigation of solids but the interpretation of results in grainy and porous media is still unclear. A unique picture can be obtained assuming that the dominant process is Ps trapping in competing "extended free volume" sites. In samples with a large amount of free volumes near-saturation Ps trapping will rule the lifetime pattern, and very long lifetimes of over 100 ns might arise from o-Ps trapped in mesopores. It is shown that lifetime parameters must be corrected for the 3γ/2γ counting efficiency ratio. The results demonstrate the high sensitivity of Ps to mesopores in zeolites but also that Ps-trapping poses limitations on the applicability of lifetime to structural investigation in porous systems. The evolution of the lifetime spectra upon changes in the sample and measuring conditions should be considered in a complex way, observing not only changes in some selected components but in the whole lifetime pattern simultaneously.
Źródło:
Acta Physica Polonica A; 2005, 107, 5; 729-737
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of deuterium content of water on the growth of plant embryo and free radical producing processes
Autorzy:
Kiss, S A
Varga, I.S.
Powiązania:
https://bibliotekanauki.pl/articles/14566.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
seedling mass
natural water
plant seed
producing process
free radical formation
plant growth
water
plant embryo
seedling length
deuterium content
Opis:
In the course of germinating plant seeds - if the deuterium (D) concentration in the germinating medium (water) is lower or higher than in natural water (150 ppm) - the length and mass of seedlings (coleoptil, epicotyl, root) proportionally decrease. The cause of the decrease owing to the changed D concentration is explained partly on energetic - partly on free radical basis and proved by measuring. In waters with lower or higher than natural D concentration the energy supply decreases while the free radical formation increases. Free radicals exert their influence by inactivating the bios substances (e.g. auxin) through oxidation. This seems to explain the mechanism of the ensuing changes.
Źródło:
Journal of Elementology; 2007, 12, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Recoil Effect and Surface Excitations on the Inelastic Mean Free Paths of Electrons in Polymers
Autorzy:
Lesiak, B.
Kosiński, A.
Jablonski, A.
Sulyok, A.
Gergely, G.
Tóth, J.
Varga, D.
Powiązania:
https://bibliotekanauki.pl/articles/2046849.pdf
Data publikacji:
2006-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.35.Cd
82.80.Pv
87.16.Ac
Opis:
In this work, the influence of recoil effect and surface excitations on the inelastic mean free paths for polythiophenes is investigated. The inelastic mean free paths of electrons in polythiophenes are measured with the elastic peak electron spectroscopy method using the Ag standard and the electron elastic scattering cross-sections from the database NIST 3.1 in the electron kinetic energy range 200-5000 eV. The Monte Carlo model is applied for evaluating the electron backscattering intensities from the polymers and the Ag standard, as well as for evaluating electrons quasi-elastically backscattered from atoms of different atomic numbers (the recoil effect). The surface excitation corrections are accounted for using the formalism of Chen, with the material parameters for polythiophenes evaluated from the elastic peak electron spectroscopy method. Deviations due to recoil effect and surface excitations to the inelastic mean free paths are compared and discussed. Correction to the inelastic mean free paths due to recoil effect is considerable but is smaller, however, than the correction due to surface excitations. Accounting for recoil effect and surface excitations leads to improvement of the inelastic mean free paths, as compared to the inelastic mean free paths resulting from the predictive formulae of Gries.
Źródło:
Acta Physica Polonica A; 2006, 109, 6; 789-800
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Characterization of Melt-Spun Co-Ni-Ga Ferromagnetic Superelastic Alloy
Autorzy:
Mino, J.
Ipatov, M.
Gamcova, J.
Saksl, K.
Durisin, M.
Zhukova, V.
Vargova, Z.
Zhukov, A.
Varga, R.
Powiązania:
https://bibliotekanauki.pl/articles/1030261.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
62.20.fg
Opis:
Ribbons of composition Co₄₉Ni₂Ga₃₀ have been prepared by melt-spinning method. X-ray diffraction investigation revealed single phase with B2 structure at room temperature. However, analysis of magnetization dependence of temperature suggests phase transition in the range 150-250 K. Resistivity measurements revealed similar transition with shift to higher temperatures in the presence of magnetic field.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 1075-1077
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Susceptibility Spectroscopy in FeNiSiB Microwires
Autorzy:
Olivera, J.
Gamcova, J.
Varga, R.
Santos, J.
Prida, V.
Sanchez, M.
Hernando, B.
Zhukov, A.
Powiązania:
https://bibliotekanauki.pl/articles/1813592.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Kj
75.60.Jk
Opis:
Here, we present the study on the influence of the Ni content on the magnetization processes of the amorphous glass-coated $Fe_{77.5-x}Ni_xSi_{7.5}B_{15}$ (x = 0-40) microwires. Measurement of the amplitude dependence of the complex susceptibility was used to observe the magnetization process. It is shown that the magnetization process in the presented samples runs mainly through the domain wall motion.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 155-158
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection and identification of loss of efficiency faults of flight actuators
Autorzy:
Ossmann, D.
Varga, A.
Powiązania:
https://bibliotekanauki.pl/articles/330772.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
aerospace engineering
fault detection
fault diagnosis
loss of efficiency type of faults
flight actuator faults
inżynieria lotnicza
detekcja uszkodzeń
diagnostyka uszkodzeń
Opis:
We propose linear parameter-varying (LPV) model-based approaches to the synthesis of robust fault detection and diagnosis (FDD) systems for loss of efficiency (LOE) faults of flight actuators. The proposed methods are applicable to several types of parametric (or multiplicative) LOE faults such as actuator disconnection, surface damage, actuator power loss or stall loads. For the detection of these parametric faults, advanced LPV-model detection techniques are proposed, which implicitly provide fault identification information. Fast detection of intermittent stall loads (seen as nuisances, rather than faults) is important in enhancing the performance of various fault detection schemes dealing with large input signals. For this case, a dedicated fast identification algorithm is devised. The developed FDD systems are tested on a nonlinear actuator model which is implemented in a full nonlinear aircraft simulation model. This enables the validation of the FDD system’s detection and identification characteristics under realistic conditions.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 1; 53-63
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anatomy and taxonomic position of Elma H. Adams, 1866: a high-spired Southeast-Asian genus of Streptaxidae (Gastropoda: Eupulmonata)
Autorzy:
Pall-Gergely, B.
Hunyadi, A.
Varga, A.
Rowson, B.
Powiązania:
https://bibliotekanauki.pl/articles/83039.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Tematy:
anatomy
taxonomic position
Elma
Asian genus
Streptaxidae
Gastropoda
Eupulmonata
systematics
snail
land snail
carnivorous animal
Źródło:
Folia Malacologica; 2015, 23, 2
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Domain Wall Dynamics in Amorphous Microwires
Autorzy:
Richter, K.
Kostyk, Y.
Varga, R.
Zhukov, A.
Larin, V.
Powiązania:
https://bibliotekanauki.pl/articles/1813506.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Ej
75.60.Jk
Opis:
Here we present the domain wall dynamics in FeNi-based microwires with positive magnetostriction. Two different ranges were found which differs by the measured domain wall mobility. At low fields, the domain wall dynamics exhibit small mobility, whereas at higher field the domain wall mobility increases. The difference in the two regimes of the domain wall dynamics is treated in terms of the different domain wall structure. At low fields, the transversal domain wall is expected, with low domain wall mobility. At high field, the vortex-type domain wall with high domain wall mobility is created.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 7-10
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Imaging the Surface Domain Structure of Amorphous Glass-Coated Microwires by Bitter Colloid
Autorzy:
Richter, K.
Varga, R.
Thiaville, A.
Powiązania:
https://bibliotekanauki.pl/articles/1199821.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Ch
75.60.Jk
Opis:
The fast domain wall dynamics of amorphous glass-coated microwires can be changed drastically by properly selected annealing temperature. Here, the effect of thermal annealing on the surface domain structure of microwires is examined. Imaging the surface domain structure by Bitter colloid revealed the periodic pattern in each studied sample. Thermal annealing of microwires results in the five times increase of the domain wall velocity, as compared to the as-cast state. Influence of the surface domain structure on the fast domain wall propagation in microwires is discussed.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 72-73
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Thermal Treatment on Domain Wall Dynamics in Glass-Coated Microwires
Autorzy:
Richter, K.
Varga, R.
Zhukov, A.
Powiązania:
https://bibliotekanauki.pl/articles/1506966.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Ej
75.60.Jk
Opis:
We have studied the effect of thermal treatment on amorphous glass-coated $Fe_{40}Si_{7.5}B_{15}$ microwires. This microwire is characterized by transverse domain wall regime only, with maximum domain wall velocity of about 1500 m/s. Annealing at 200°C slightly increases its transverse domain wall velocity, probably due to the reduction of mechanical stresses during the thermal annealing. Annealing at 300°C leads to drastical increase of domain wall mobility and domain wall velocity of the transverse domain wall up to 2500 m/s. Moreover, vortex regime appears in this case. Thanks to it, maximum domain wall velocity of around 5000 m/s was observed.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 738-739
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Properties of Conducting Polypyrrole Nanotubes
Autorzy:
Rudajevová, A.
Varga, M.
Prokeš, J.
Kopecká, J.
Stejskal, J.
Powiązania:
https://bibliotekanauki.pl/articles/1402141.pdf
Data publikacji:
2015-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.80.Le
66.70.Hk
65.40.De
66.30.Xj
Opis:
Thermal properties of polypyrrole nanotubes synthesized by the chemical oxidation of pyrrole with iron(III) chloride in the presence of methyl orange as structure-guiding template, have been investigated. As-prepared polypyrrole salt and corresponding base were compressed into pellets. Thermogravimetric analysis has shown that the heating/cooling of both polymers is connected with water desorption/re-absorption. This process influences all temperature dependences of the thermophysical properties. The specific heat of both polypyrrole forms was the same at 35°C. The thermal diffusivity of polypyrrole base was lower than that of the salt. The dilatational characteristics are strongly influenced by water desorption/re-absorption. Water desorption is connected with the contraction of polypyrrole and its re-absorption with the expansion of polypyrrole. The electrical resistivity was measured, in analogy to thermal experiments, by a four-point van der Pauw method. The electrical resistivity was 0.016 and 10.2 Ωcm at room temperature, for both materials. The electrical resistivity was also influenced by water desorption/re-absorption as well as other thermophysical properties.
Źródło:
Acta Physica Polonica A; 2015, 128, 4; 730-736
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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