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Wyświetlanie 1-15 z 108
Tytuł:
Numerical simulations of impulsively excited fast magnetosonic waves in two parallel slabs
Autorzy:
Ogrodowczyk, R.
Murawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1955342.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska
Tematy:
Sun: MHD
Sun: corona
Sun: oscillation
Opis:
We present numerical results of a temporal evolution of impulsively excited magnetosonic waves in a solar coronal loop that is approximated by a set of two straight plasma slabs of mass density enhancement. Numerical simulations reveal that shapes of wavelet spectra of time signatures of these waves depend on a distance between the strands and on a position of the initial pulse. We find that with a distance growing between these strands short period waves contribute more while long period waves contribute less to the wavelet spectra. We demonstrate that a presence of the second parallel strand affects considerably wave propagation in comparison to one strand alone. We find out that the initial pulse triggers a packet of propagating waves among witch sausage and kink modes are present simultaneously.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 3; 227-238
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Tendencies Group Type III Burst Form Type II Burst During Low activity
Autorzy:
Hamidi, Z. S.
Mokthtar, Fatin Nabila
Shariff, N. N. M.
Ali, Marhana Omar
Husien, Nurulhazwani
Sabri, S. N. U.
Zainol, N. H.
Monstein, C.
Powiązania:
https://bibliotekanauki.pl/articles/1191365.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Coronal Mass Ejections (CMEs)
X-ray region
radio region
solar burst
sun
sun type II
sun type III
Opis:
Using the e-CALLISTO network radio observations on 1st June 2015, we present an analysis of the complex type III and type II solar radio bursts during low activity. This event occurred on 1st July 2015 at 13:52 UT (complex solar burst type III) and 13:40 UT - 13:44 UT (solar burst type II). Solar burst type detected at (i) BIR, (ii) BLENSW, (iii) Essen, (iv) Glascow (v) Osra, (vi) Rwanda. The spectral shape consists of high flux densities at meter wavelengths. The energy going into plasma heating during each flare was estimated by computing the time evolution of the energy content of the thermal plasma and obtaining the peak value. This constitutes a lower limit to the thermal energy, since it does not account for the cooling of the plasma prior to this time nor to any heating at later times. It is also believed that the meter wavelength branch of the this type III spectrum may be attributable to second-phase accelerated electrons to form type II burst. There are four sunspots of the active regions (AR2355, AR2356, AR2357, and AR2358) during this event. The solar wind recorded during the event is 342.4 km/s and the density of the proton recorded is 4.1 protons/cm3. Moreover, the are some evidence that radio-quiet CMEs mostly came from the edges of the sun. The main goal of this study was to determine whether is there any possibilities that the radio burst can be formed even the Sun is at low activity and this event is one of the candidate events.
Źródło:
World Scientific News; 2016, 34; 121-134
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Natural sun-light assisted photocatalytic and electrocatalytic activity of WO3-TiO2 novel nanomaterial
Autorzy:
Kamalakkannan, J.
Balraj, N.
Powiązania:
https://bibliotekanauki.pl/articles/1157041.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Photocatalysis
Reusability
Sun light
Opis:
The WO3-TiO2 novel nanomaterial was synthesized by precipitation method and sonication technique. The nanomaterial for the degradation of malachite green (MAG) dye under natural sun light irradiation. The synthesized nanomaterial is characterized by HR-SEM with EDX, PL and UV-Vis DRS analysis. The photodegradation of MAG at various parameters are reported. The mechanisms of dye degradation in natural sun light explain the higher photocatalytic activity of the catalyst. The result indicates the advantage of wastewater treatment by it. The electrochemical study from DSSC analysis showed increased current by WO3-TiO2 nanomaterial. It was proposed that the catalyst was found to be stable and reusable.
Źródło:
World Scientific News; 2018, 94, 2; 276-286
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical simulations of slow magneto sonic standing waves in a two-dimensional hot solar coronal slab
Autorzy:
Ogrodowczyk, R.
Murawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1933175.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska
Tematy:
sun
solar corona
MHD oscillations
Opis:
We consider impulsive excitation of slow magnetosonic standing waves in a two-dimensional hot solar coronal slab. Results of numerical simulations have revealed that initially launched pulses trigger mainly fundamental slow mode and its first harmonic, depending on the pulses' spatial location. Our parametric study has shown these slow standing waves to exhibit wave periods of about 13min. The slow standing waves are accompanied by fast modes simultaneously present in the system.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2007, 11, 3; 263-271
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Socjologia emocji w sztuce wojennej na podstawie dzieła SUN ZI „sztuka wojny”
Autorzy:
Zaczyńska Zaczek, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/121619.pdf
Data publikacji:
2012
Wydawca:
Towarzystwo Wiedzy Obronnej
Tematy:
socjologia emocji
sztuka wojenna
Sun Wu
Sun Zi
sociology of emotions
art of war
Źródło:
Wiedza Obronna; 2012, 2; 90-96
0209-0031
2658-0829
Pojawia się w:
Wiedza Obronna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
When East Meets West: a Harmonised Model for Performance and Institutional Alignment to Manage Knowledge Practitioners, Their Productivity in a Knowledge-Based Economy
Autorzy:
Wong, Peter S.
Neck, Philip A.
Powiązania:
https://bibliotekanauki.pl/articles/683557.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Taoism, Confucianism, Sun-Tzu, Drucker, Productivity
Opis:
Background. Organisations now have to rely on knowledge-worker productivity rather than advances in production equipment to sustain their businesses. There is a quite remarkable contrast in the operating procedures between the “East” and “West” approaches. Research aims. This paper explores how an amalgamated wisdom of East and West management approach can instigate a wisdom-based renaissance of humanistic epistemology to provide a platform of harmony in managing knowledge-worker productivity, one of the biggest management challenges of the 21st century. Method. The paper invites further discussions from the social and business research communities on the significance of “interpretation realism” technique in comprehending Lao Tzu, Confucius and Sun Tzu’s philosophies written in “Classical Chinese.” Key findings. This paper concludes with a call to explore how amalgamating Eastern cultural wisdom (favouring a humanity approach) and Western practices (favouring a performance approach) help to instigate business harmony and its impact on the management of knowledge-practitioners and their productivity.
Źródło:
International Journal of Contemporary Management; 2015, 14, 1
2449-8920
Pojawia się w:
International Journal of Contemporary Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tao of Security. A Study of Far-Eastern Security Culture Genesis
Autorzy:
Grabińska, Teresa
Piwowarski, Juliusz
Powiązania:
https://bibliotekanauki.pl/articles/1832639.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
Buddism
security culture
Tao
Sun Tzu
Opis:
The work contains an analysis of security culture phenomenon from the perspective of Sun Tzu. The idea here is to build the entire universe and a placed-in man, as an area in which operate the impact from the energy of macrocosm. It is the same – corresponding to the body of the universe – with microcosm – the body of a human being immersed in the interaction energy of the endless universe. This concept, combining with the ideas of Confucianism and Buddhism, which here are not broadly discussed, has practical application for over two thousand years in the deliberations on the various areas of human activity. The principles of building and applying of strategies and tactics are to some extent determined by the rhythm of the endless universe cosmic energy – chi (qi). Prevention of risks in an effective way by competent governance in time of peace, and a skilful command in war, comes down to an agile mediation between “Heaven” and “Earth” to use the rhythm of cosmic harmony in the ranks of subordinates.
Źródło:
Security Dimensions; 2017, 22(22); 30-54
2353-7000
Pojawia się w:
Security Dimensions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sun tracking in PV systems aspects
Autorzy:
Frydrychowicz-Jastrzębska, G.
Bugała, A.
Powiązania:
https://bibliotekanauki.pl/articles/97242.pdf
Data publikacji:
2012
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
photovoltaic system
PV system
sun tracking
Źródło:
Computer Applications in Electrical Engineering; 2012, 10; 333-346
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Enlargement of Type II Burst After Type III at AR 12522 on 16th March 2016 In Conjunction With Flare-Related Coronal Mass Ejections Event
Autorzy:
Husien, Nurulhazwani
Hamidi, Z. S.
Shariff, N. N. M.
Ali, M. O.
Zainol, N. H.
Sabri, S. N. U.
Monstein, C.
Powiązania:
https://bibliotekanauki.pl/articles/1178545.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Coronal Mass Ejections
Sun
X-ray emission
Opis:
On 16th March 2016 the solar radio burst type II is recorded to appear on spectrograph after the type III formation. These two bursts related to the Coronal Mass Ejections (CMEs) event that recorded by the SOHO spacecraft several minutes before the formation of Type III on the spectrograph. It has been reported that the Type III burst a fast drift compared to the Type II burst. In this paper, the calculation has been proved that the type III burst has a higher drift rate compared to Type II. These two events of Type II and III burst also has been contributing to the formation of C class flare with magnitude of C2.2 It is also proven that the type III burst has a fast drift rate compared to type II burst. In this case, the type III has a fast drift rate of 81% compared to the type II burst. During this event, the active region AR 12522 erupted the C-class X-ray emission with magnitude of C2.2 contribute to these type III and II burst
Źródło:
World Scientific News; 2017, 70, 2; 230-240
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Correlation between Solar Flare Phenomena in an X-ray Region and Radio Flux Measurement from January to September 2010
Autorzy:
Hamidi, Z. S.
Shariff, N. N. M.
Ali, M. F.
Monstein, C.
Zulkifli, W. N. A. W.
Ibrahim, M. B.
Arifin, N. S.
Amran, N. A.
Powiązania:
https://bibliotekanauki.pl/articles/411743.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
sun
chromospheres
flares
radio flux
solar activity
Opis:
A short term variation of solar flare in nine months (January 2010 to September 2010) is presented. This paper review and analyze the correlation between radio flux strength measurement and solar flare in the X-ray region. The radio flux measurement data were taken from the National Research Council; Ottawa while hard X-ray emission observed by Royal Observatory of Belgium. The overall range of solar radio flux recorded in this study ranging from 68 x 10-22 Wm-2Hz-1 to 96 x 10-22 Wm-2Hz-1. As there was no class of an X of solar flare reported at all in this study, we can confirm that there are no major effects that happened on Earth and outer space such as Coronal Mass Ejections (CMEs) and solar storms. We concluded that the Sun shows a very minimum activity towards 24th solar cycle.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 9; 84-92
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contemporary Icarus: Gustav von Aschenbach’s Journey towards the Sun
Autorzy:
Sieradzan, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1032281.pdf
Data publikacji:
2020-12-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Venice
Mann
sun
mythology
love
decadence
novella
Opis:
The point of departure for the reflections contained in this article is the motif of the sun in Tomasz Mann’s Death in Venice. Analysing the presence of the sun in the work turns out to be fruitful for distinguishing and connecting several symbolic planes, on which the issues of Death in Venice and the drama of the main character are depicted: the relationship between contemporary times and antiquity, the cultural North-South axis, the destructive power of beauty as well as the individual fate of the artist marked by decadence. The figure of the sun seems to provide material for the interpretation of the figure of Gustav von Aschenbach as an incarnation of contemporary Icarus and allows the reader to see the path which the protagonist of Death in Venice follows in a new light.
Źródło:
Czytanie Literatury. Łódzkie Studia Literaturoznawcze; 2020, 9; 139-154
2299-7458
2449-8386
Pojawia się w:
Czytanie Literatury. Łódzkie Studia Literaturoznawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nutritional intake, sun exposure and vitamin D level in childrens with thalassemia major
Autorzy:
Herawati, Yesi
Nugraha, Gaga Irawan
Gurnida, Dida Akhmad
Powiązania:
https://bibliotekanauki.pl/articles/1031498.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
nutritional intake
sun exposure
thalassemia major
vitamin D
Opis:
Children with thalassemia major generally experience growth retardation. One of the growth parameters is serum vitamin D levels. The main source of vitamin D comes from endogenous synthesis with sun exposure and dietary sources. This cross sectional study involved 84 children with thalassemia major aged 4-14 years old taken through concecutive sampling. Nutritional intake was obtained through a semi quantitative food frequency questionnaire, while the duration of sun exposure was calculated at peak UVB intensities at 11.00-15.00. The enzyme-linked immunosorbent assay (ELISA) method was used to examine vitamin D levels. The data was analized by Spearman Rank corelation dan multiple linier regresion. The results were 4.8% of subjects had vitamin D insufficiency and 95.2% had deficiency. Daily average intake of nutrients compared to their requirements were energy intake 70.5% (1538.7 Kcals), protein 55,4 % (45.5 grams), fat 79,2% (57.7 grams), carbohydrates 68,6% (204.9 grams) and vitamin D 15,8% (2.4 µg). The mean (SD) of sun exposure was 158.3 (91.2) minutes. Energy, protein, and fat intake were significantly associated with vitamin D levels (r = 0.27; 0.31; 0.38 and p <0.025). Sun exposure was strongly associated with vitamin D levels (r = 0.80; p <0.025), while vitamin D intake was associated with vitamin D levels (p> 0.025). Fat intake and sun exposure have a strong effect on vitamin D levels, with a regression equation of vitamin D levels = 5.62 + 0.22 * fat intake + 0.12 * sun exposure.
Źródło:
World Scientific News; 2020, 142; 180-194
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ kierunku iluminacji na wyniki geologicznej interpretacji DEM-przykłady z Karpat Zachodnich
Effect of direction of sun shading on geological interpretation of DEM - examples from the Weastern Carpathians
Autorzy:
Ozimkowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/2074811.pdf
Data publikacji:
2010
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
DEM
lineamenty
iluminacja
Karpaty
lineaments
sun shading
Carpathians
Opis:
The paper presents results of comparison of 2 sets of geological interpretations of the same DEM (Digital Elevation Model), obtained with 2 different, perpendicular sun shading directions (N and E). Lineaments perpendicular to sun shading direction are at least 10 times better visible than lineaments parallel to it but this influence is visible only at relatively narrow angles. In turn, lineaments situated between ca. 25–65° from sun shading direction show no such influence so they fit to statistical purposes.
Źródło:
Przegląd Geologiczny; 2010, 58, 9/2; 862-866
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enormous Eruption of 2.2 X-class Solar Flares on 10th June 2014
Autorzy:
Hamidi, Z. S.
Shariff, N. N. M.
Powiązania:
https://bibliotekanauki.pl/articles/411754.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
sun
X-ray region
solar flare
active region
Opis:
The observational of active region emission of the Sun contain an critical answer of the time-dependence of the underlying heating mechanism. In this case, we investigate an X2.2 solar flare from a new Active Region AR2087 on the southeast limb of the Sun. The solar flare peaked in the X-rays is around 11:42 UT. It was found that the snapshot of this event from the Solar Dynamics Observatory (SDO) channel with the GOES X-ray plot overlayed. The flare is very bright causes by a diffraction pattern. We explore a parameter space of heating and coronal loop properties. Based on the wavelength, it shows plasma around 6 million Kelvin. At the same time, data from the NOAA issued an R3 level radio blackout, which is centered on Earth where the Sun is currently overhead at the North Africa region. This temporary blackout is caused by the heating of the upper atmosphere from the flare. The blackout level is now at an R1 and this will soon pass. Other than the temporary radio blackout for high frequencies centered over Africa this event will not have a direct impact on us. Until now, we await more data concerning a possible Coronal Mass Ejections (CMEs) but anything would more than likely not head directly towards Earth. An active region AR2087 just let out an X1.5 flare peaking at 12:52 UT. This shows plasmas with temperatures up to about 10 Million Kelvin. This event is considered one of the massive eruption of the Sun this year.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 17, 3; 249-257
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozwój cieplnej energetyki słonecznej w Polsce i Unii Europejskiej
The development of thermal solar energy in Poland and the European Union
Autorzy:
Kurzak, L.
Powiązania:
https://bibliotekanauki.pl/articles/2065458.pdf
Data publikacji:
2016
Wydawca:
Politechnika Częstochowska
Tematy:
słońce
energia
ciepło
kolektory
sun
energy
heat
collectors
Opis:
W pracy przedstawiono możliwości i potencjał energii Słońca oraz tendencje w jej wykorzystaniu. Polityka energetyczna UE, a w szczególności nowa dyrektywa UE o promocji stosowania odnawialnych źródeł energii stwarzają warunki do szybkiego rozwoju nowoczesnych technologii energetyki słonecznej. Ewolucja wykorzystania energii Słońca w Polsce i UE pokazuje na wielki potencjał termalnej energetyki słonecznej.
The paper presents the possibilities and potential of solar energy and the trends in its use. EU energy policy, and in particular the new EU Directive on the promotion of renewable energy sources create conditions for rapid development of modern technology of solar energy. The evolution of the use of solar energy in Poland and the EU points to the great potential of thermal solar energy.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2016, 2 (18); 41--48
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 108

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