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Tytuł:
Badania drugiej fazy nad skutecznością i bezpieczeństwem długotrwałej powtarzalnej szybkoczęstotliwościowej przezczaszkowej stymulacji magnetycznej w terapii depresji
2nd phase clinical examination of the efficacy and safety of prolonged rapid-rate repetitive transcranial magnetic stimulation in the treatment of depression
Autorzy:
Zyss, T.
Zięba, A.
Dudek, D.
Datka, W.
Siwek, M.
Wróbel, A.
Grabski, B.
Mączka, G.
Brudkiewicz, P.
Wojnar, N.
Łączyńska, M.
Powiązania:
https://bibliotekanauki.pl/articles/261554.pdf
Data publikacji:
2011
Wydawca:
Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
Tematy:
przezczaszkowa stymulacja magnetyczna
terapia
depresja
transcranial magnetic stimulation
therapy
depression
Opis:
W artykule zaprezentowano wyniki badań klinicznych drugiej fazy nad bezpieczeństwem i efektywnością przezczaszkowej stymulacji magnetycznej (TMS – Transcranial Magnetic Stimulation) w porównaniu z terapią elektrowstrząsową oraz samodzielną farmakoterapią. Do badań zakwalifikowano 75 pacjentów, których przydzielono losowo do trzech grup. We wszystkich grupach po zastosowaniu terapii stan kliniczny pacjentów wyraźnie się poprawił (objawy depresji ustąpiły). Najlepszy efekt zaobserwowano w grupie poddanej zabiegom elektrowstrząsowym oraz zażywającej leki przeciwdepresyjne. Nie udało się wykazać, że terapia łącząca stymulację magnetyczną z farmakoterapią była bardziej skuteczna od samodzielnego leczenia farmakologicznego. Podjęto próbę wyjaśnienia nieskuteczności przezczaszkowej stymulacji magnetycznej.
The paper presents the results of the 2nd phase clinical examination of the safety and efficiency of the transcranial magnetic stimulation TMS, compared to the electroconvulsive therapy and standalone pharmacotherapy. 75 patients were enrolled into the study. They were divided randomly into three groups. The significant improvement of clinical state (diminishment of depressive symptoms) was achieved in all groups. The best effect was observed in the group of patients treated with the electroconvulsive therapy, combined with the drugs. However, transcranial magnetic stimulation, along with pharmacotherapy did not prove to be more effective than standalone pharmacological treatment. Possible explanations of ineffectiveness of the transcranial magnetic stimulation therapy is given.
Źródło:
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2011, 17, 4; 301-307
1234-5563
Pojawia się w:
Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Studies of Surface Roughness of Thin Epitaxial Si Films by Computer Simulations and Experimental X-Ray and Optical Methods
Autorzy:
Żymierska, D.
Auleytner, J.
Domagała, J.
Szewczyk, A.
Dmitruk, N.
Powiązania:
https://bibliotekanauki.pl/articles/1964181.pdf
Data publikacji:
1997-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.20.Ci
68.35.Bs
61.10.Dp
Opis:
The paper presents investigations of the surface roughness of epitaxial silicon films obtained by chemical vapour deposition with chloric and MOCVD processes. The flat surfaces of films and chemically etched surfaces of substrates were studied by optical methods as well as by X-ray reflectivity at grazing incidence. The computer simulations based on Fresnel theory were compared with the experimental results.
Źródło:
Acta Physica Polonica A; 1997, 91, 5; 1025-1030
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The indoor radon survey in Serbian schools: can it reflect also the general population exposure?
Autorzy:
Žunić, Z. S.
Bossew, P.
Veselinović, N.
Bochicchio, F.
Carelli, V.
Vaupotič, J.
Čuknić, O.
Simović, R.
Vojinović, Z.
Kisić, D
Tollefsen, T.
Powiązania:
https://bibliotekanauki.pl/articles/148743.pdf
Data publikacji:
2010
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
indoor radon
survey
school
Serbia
Opis:
A systematic indoor radon survey in elementary schools of Serbia is underway since 2008. Its current first phase covers all elementary schools in predominantly rural communities of Southern Serbia. The design of the survey, its implementation and the current state of its realization is shortly described. Part of this paper is devoted to discussion of the question if this survey could produce results representative also of the radon concentration in dwellings and of radon exposure of the general population, discussing some statistical aspects of representativity which arose during the work, namely, if the implementation leads to an unbiased estimate of the targeted quantities.
Źródło:
Nukleonika; 2010, 55, 4; 419-427
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Capacity of the Family System for Peer Violence Prevention
Autorzy:
Zuković, Sladjana N.
Popović, Daliborka R.
Slijepčević, Senka D.
Powiązania:
https://bibliotekanauki.pl/articles/1968207.pdf
Data publikacji:
2019-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
family
prevention
pro-social behavior
school
peer violence
Opis:
The paper presents research findings concerning desired parental activities for peer violence prevention. An instrument was created for the purpose of this research, and study sample comprised 480 participants, including 170 parents, 94 teachers and 206 students. Activities perceived as more important were open communication and greater control of children’s behavior, while parents’ participation in school was assessed as less important. The “School without violence” program was recognized as a significant resource for empowering family activities in peer violence prevention. This implies that it is important to implement family support programs and to develop parents’ skills.
Źródło:
The New Educational Review; 2019, 56; 161-171
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of parametric structure modelling in the design process
Autorzy:
Żuk, D.
Abramczyk, N.
Lesnau, A.
Powiązania:
https://bibliotekanauki.pl/articles/243506.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
parameterization
control parameters
modelling
davit
automation
Opis:
Automation of processes related to design and manufacturing is one of the essential goals of most manufacturing companies. The use of modern computer-aided design systems CAD allows partial automation of such processes. The parametric model can be built in some CAD systems. In the parametric model, selected dimensions are treated as control parameters. By changing the values of these parameters, we can control the remaining geometrical dimensions of the model. These dimensions can be associated with linear control parameters using mathematical relationships. Parameterization allows you to associate a geometric model with a mathematical model and allows you to automatically make changes to all elements associated with the currently modified parameter. When working on a non-parameterized model, the changes in the modelled object must be applied separately for each part and subassembly of which it is composed. In a parametric model, changing one parameter entails changes in other parameters dependent on it. Parameterization of the model allows its use for further modification of the designed structure related to customer requirements, even for that very complex, as well as accelerating the design process itself. The article presents a three-dimensional geometric model of a boat davit created with the use of the Siemens NX 9.0 software. In the work, the geometry of the crane model was parameterized for the assumed values of its height and reach. As a result of parametric modelling, the values of the individual geometric dimensions of the device’s structure elements and their mass were obtained. It was justified that thanks to the use of parameterized models, the time of design and construction processes can be significantly reduced, which makes the process more efficient.
Źródło:
Journal of KONES; 2018, 25, 3; 541-548
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical Assessment of the Microstructure of Barite Aggregate from Different Deposits Using X-Ray Microtomography and Optical Microscopy
Autorzy:
Żołek, N.
Ranachowski, Z.
Ranachowski, P.
Jóźwiak-Niedźwiedzka, D.
Kudela, S. jr.
Dvorak, T.
Powiązania:
https://bibliotekanauki.pl/articles/351890.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
barite ore
barite aggregate
microstructure
optical microscopy
thin sections analysis
X-ray tomography
Opis:
Two different barite ore (barium sulfate BaSO4) specimens from different localizations were tested and described in this paper. Analysis of the microstructure was performed on polished sections, and on thin sections using X-ray microtomography (micro-CT), and optical microscopy (MO). Microtomography allowed obtaining three-dimensional images of the barite aggregate specimens. In the tomograms, the spatial distribution of the other polluting phases, empty space as well as cracks, pores, and voids – that exceeded ten micrometers of diameter-were possible to visualize. Also, the micro-CT allowed distinguishing between minerals of different density, like SiO2 and BaSO4. Images obtained and analyzed on thin sections with various methods using the optical microscopy in transmitted light delivered additional information on the aggregate microstructure, i.e. allow for estimation of the different kinds of inclusions (like the different density of the minerals) in the investigated specimens. Above methods, which were used in the tests, completed each another in order to supply a set of information on inclusions’ distribution and to present the important differences of the barite aggregate specimens microstructure.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2A; 697-702
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wear analysis of cemented carbide during turning of cast iron considering economical machining speed
Autorzy:
Znojkiewicz, N.
Korzeniewski, D.
Wiciak, M.
Powiązania:
https://bibliotekanauki.pl/articles/94192.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
economical machining speed
turning
tool wear
cast iron
cemented carbide
prędkość obrotowa
toczenie
zużycie narzędzi
żeliwo
węglik spiekany
Opis:
The purpose of this paper is to find economical machining speed during turning of grooves for piston rings with various feeds. In the first part of the paper, literature analysis concerning durability of cutting tools is presented. Next, the wear of cemented carbide cutting tools during turning of cast iron is researched. The research has been done for seven cutting tools. During conducted turning trials, angular speed has been altered from n=530rev/min to n=710rev/min and feeds from f=0.007mm/rev to f=0.105mm/rev. On the basis of Taylor’s equation, which relates cutting speed to tool life, the economical cutting speed is established with the application of two various methods.
Źródło:
Archives of Mechanical Technology and Materials; 2017, 37; 27-34
2450-9469
Pojawia się w:
Archives of Mechanical Technology and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ZnO Thin Films Synthesized by Sol-Gel Process for Photonic Applications
Autorzy:
Znaidi, L.
Touam, T.
Vrel, D.
Souded, N.
Ben Yahia, S.
Brinza, O.
Fischer, A.
Boudrioua, A.
Powiązania:
https://bibliotekanauki.pl/articles/1490964.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Fw
61.46.-w
78.20.-e
Opis:
Undoped and aluminum-doped ZnO thin films are prepared by the sol-gel process. Zinc acetate dihydrate, ethanol and monoethanolamine are used as precursor, solvent and stabilizer, respectively. In the case of Al-doped ZnO, aluminum nitrate nonahydrate is added to the precursor solution with an atomic percentage equal to 1 or 2 at.% Al. The multi thin layers are prepared by spin-coating onto glass substrates, and are transformed into ZnO upon annealing at 550°C. Films with preferential orientation along the c-axis are successfully obtained. The structural, morphological, and optical properties of the thin films as a function of aluminum content have been investigated for different elaboration parameters (e.g. layer number) using X-ray diffraction, atomic force microscopy, scanning electronic microscopy. Waveguiding properties of the thin films have been also studied using m-lines spectroscopy. The results indicate that our films are monomodes at 632.8 nm with propagation optical loss estimated around 1.6 dB/cm.
Źródło:
Acta Physica Polonica A; 2012, 121, 1; 165-168
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of value innovation potential under transitional conditions in Serbia
Autorzy:
Živković, D.
Manasijević, D.
Štrbac, N.
Niculović, M.
Živadinović, J.
Powiązania:
https://bibliotekanauki.pl/articles/406835.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innovation
value innovation potential
transition
Opis:
Nowadays, business environment is faster than ever in the field of new technologies. The firms are forced to find new ways to compete and survive through innovations. To meet these demands, different tools and techniques are used in order to measure capability of firms to innovate. One of them is the Value Innovation Potential Assessment Tool, which helps to identify appropriate opportunities for firms to use it to assess their effectiveness of innovation work. The main goal of this paper was to investigate the Value Innovation Potential under transitional conditions in some firms in South-Eastern Serbia. The research was done using a questionnaire taken from literature, which was applied to one hundred employees in mentioned Serbian firms. The data were statistically analysed, explained and main conclusions were obtained. Proposed factor model of Value Innovation Potential was tested using confirmatory factor analysis (CFA) on investigated population.
Źródło:
Management and Production Engineering Review; 2015, 6, 2; 82-88
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Liquid Nitrogen Temperature Reflectivity Spectra of Zn$\text{}_{1-x}$Mn$\text{}_{x}$Se and Zn$\text{}_{1-y}$Fe$\text{}_{y}$Se Mixed Crystals
Autorzy:
Zimnal-Starnawska, M.
Dębowska, D.
Kisiel, A.
Piacentini, M.
Lama, F.
Zema, N.
Giriat, W.
Powiązania:
https://bibliotekanauki.pl/articles/1931778.pdf
Data publikacji:
1994-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.40.Fy
Opis:
The liquid nitrogen temperature reflectivity spectra of the tetrahedral diluted magnetic semiconductors (DMS's) Zn$\text{}_{1-y}$Fe$\text{}_{y}$Se and Zn$\text{}_{1-x}$Mn$\text{}_{x}$Se crystallizing in the zinc-blende structure were investigated. The reflectivity measurements for different concentration of Fe (y = 0.01, 0.05, and 0.10) and Mn (x = 0.10 and 0.30) ions were taken out in a wide energy range between 4 and 30 eV using synchrotron radiation from ADONE storage ring in Frascati. The average resolution ΔE/E used for these measurements was better than 1 × 10$\text{}^{-3}$ over the entire spectral range. The single crystals were cleaved, before being mounted inside the reflectometer, from the samples grown by the Bridgman method. The comparison between the reflectivity spectra of ternary systems and host crystal ZnSe is made. The changes of the structures of reflectivity spectra of host crystal ZnSe caused by the influence of Fe and Mn ions are discussed.
Źródło:
Acta Physica Polonica A; 1994, 86, 5; 869-874
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Częstość występowania w wodzie nietypowych w stosunku do laktozy bakterii grupy Coli
The frequency of occurance of non-typical lactose-fermenting coliforms (Lnt) in water
Autorzy:
Zieminska, S.
Haman, S.
Hrynko, N.
Mackiewicz, K.
Plata, D.
Sinkiewicz, J.
Smolarek, E.
Wasilewska, E.
Powiązania:
https://bibliotekanauki.pl/articles/877283.pdf
Data publikacji:
1977
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
Escherichia coli
laktoza
woda
proba wodna
woda pitna
wymagania sanitarne
Źródło:
Roczniki Państwowego Zakładu Higieny; 1977, 28, 6
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synchrotron Radiation Photoemission Studies of Fe 3d States in Cd$\text{}_{1-x}$Fe$\text{}_{x}$Se
Autorzy:
Zema, N.
Lama, F.
Piacentini, M.
Felici, A. C.
Dębowska, D.
Kisiel, A.
Mycielski, A.
Olson, C. G.
Powiązania:
https://bibliotekanauki.pl/articles/1931775.pdf
Data publikacji:
1994-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.64.Lg
79.60.-i
Opis:
The angle integrated resonant photoemission measurements of Cd$\text{}_{1-x}$Fe$\text{}_{x}$Se were performed for different Fe concentrations (x = 0.00, 0.07, 0.14) in the photon energy range between 30 eV and 70 eV using synchrotron radiation. The ternary compound valence band photoemission spectra show, in comparison to the CdSe results, two additional structures, whose intensity depends on Fe content, which were assigned to Fe 3d states of e symmetry with spin up and down, respectively. The hybridization of the t$\text{}_{2}$ component of the 3d electrons of Fe in the valence band is discussed.
Źródło:
Acta Physica Polonica A; 1994, 86, 5; 861-867
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synchrotron Radiation Photoemission Studies of Mn 3d States in Zn$\text{}_{1-x}$Mn$\text{}_{x}$Se
Autorzy:
Zema, N.
Lama, F.
Piacentini, M.
Felici, A.
Dębowska, D.
Kisiel, A.
Olson, C. G.
Powiązania:
https://bibliotekanauki.pl/articles/1876344.pdf
Data publikacji:
1995-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.20.-b
75.50.Pp
79.60.-i
Opis:
The angle integrated resonant photoemission measurements of Zn$\text{}_{0.9}$Mn$\text{}_{0.1}$Se have been performed in the photon energy range between 30 eV and 70 eV using synchrotron radiation. The ternary compound valence band photoemission spectra show, in comparison to the ZnSe results, additional structures, whose intensity depends on Mn content. These new features have been assigned to transitions from the Mn 3d states of e symmetry with spin up. The hybridization of the t$\text{}_{2}$ component of the 3d electrons of Mn in the valence band is discussed.
Źródło:
Acta Physica Polonica A; 1995, 87, 2; 495-499
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Frequent D-loop polymorphism in mtDNA enables genotyping of 1400-year-old human remains from Merowingian graves
Autorzy:
Zeller, M
Mirghomizadeh, F.
Wehner, H.D.
Blin, N.
Powiązania:
https://bibliotekanauki.pl/articles/2042042.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
X chromosome
ancient remains
amplification technique
Y chromosome
ancient DNA
mtDNA
remains
Merowingian culture
polymorphism
mitochondrial DNA
man
DNA marker
DNA extraction
DNA
Źródło:
Journal of Applied Genetics; 2000, 41, 4; 285-292
1234-1983
Pojawia się w:
Journal of Applied Genetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 892

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