Autor: Malkowski, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The use of distributed sources installed in an MV network for V and Q control – steady state operation
Wykorzystanie źródeł rozproszonych zainstalowanych w sieci SN do celów regulacji U i Q – praca w stanie ustalonym
Autorzy:: Małkowski, R.
Zbroński, A.
Powiązania:: https://bibliotekanauki.pl/articles/397529.pdf
Data publikacji:: 2012
Wydawca:: ENERGA
Tematy:: voltage control
medium voltage network
distributed generation
regulacja napięć
sieć średniego napięcia
generacja rozproszona
Opis:: The paper presents and discusses examples of research results showing the potential for the use of distributed sources installed in an MV network in the process of V and Q control.
W artykule przedstawiono i omówiono przykładowe wyniki badań pokazujące potencjalne możliwości wykorzystania źródeł rozproszonych zainstalowanych w sieci SN, w procesie sterowania U i Q.
Źródło:: Acta Energetica; 2012, 3; 45-57
2300-3022
Pojawia się w:: Acta Energetica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Semi - quantitative facies model for the Kapp Starostin Formation (Permian), Spitsgerben
Model facjalny dla osadów permskiej formacji Kapp Starostin, Spitsbergen
Autorzy:: Malkowski, K.
Hoffman, A.
Powiązania:: https://bibliotekanauki.pl/articles/23040.pdf
Data publikacji:: 1979
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Źródło:: Acta Palaeontologica Polonica; 1979, 24, 2
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Qualitative indicators used to select the placement and parameters of energy storage installed in the distribution network
Wskaźniki jakościowe wykorzystywane przy wyborze lokalizacji oraz parametrów zasobników energii instalowanych w sieciach dystrybucyjnych
Autorzy:: Szultka, A.
Małkowski, R.
Szultka, S.
Powiązania:: https://bibliotekanauki.pl/articles/396870.pdf
Data publikacji:: 2017
Wydawca:: ENERGA
Tematy:: electrical energy quality
distribution networks
energy storage
jakość energii elektrycznej
sieci dystrybucyjne
zasobnik energii
Opis:: The technology related to energy storage has developed in recent years. Continuous improvement of the solutions available on the market resulted in wider usability of energy storage. They are also increasingly used in a distribution network. This study contains a synthesised description of physical features of the energy storage used in distribution networks. Several criteria of algorithms used to determine the placement and parameters of energy storage are discussed. In a synthesised manner, the usability level of the given storage type to achieve the assumed optimisation criterion is shown.
W ostatnich latach nastąpił rozwój technologii związanej z magazynowaniem energii. Ciągłe udoskonalanie dostępnych na rynku rozwiązań spowodowało poszerzenie możliwości wykorzystania zasobników energii. Coraz częściej znajdują one zastosowanie również w sieci dystrybucyjnej. Niniejsze opracowanie zawiera syntetyczny opis właściwości fizycznych zasobników energii stosowanych w sieciach dystrybucyjnych. Omówiono również wiele kryteriów stosowanych w algorytmach wykorzystywanych w celu określenia lokalizacji i parametrów zasobników energii. W syntetyczny sposób pokazano poziom przydatności danego typu zasobnika do realizacji przyjętego kryterium optymalizacyjnego.
Źródło:: Acta Energetica; 2017, 4; 86-92
2300-3022
Pojawia się w:: Acta Energetica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Faunal dynamics across the Silurian-Devonian positive isotope excursions (delta13C, delta18O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
Autorzy:: Racki, G.
Balinski, A.
Wrona, R.
Malkowski, K.
Drygant, D.
Szaniawski, H.
Powiązania:: https://bibliotekanauki.pl/articles/20924.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: fauna dynamics
Silurian
Devonian
isotope excursion
Podolia
Ukraine
comparative analysis
Ireviken event
Klonk event
Brachiopoda
Conodonta
Chitinozoa
carbon isotope
oxygen isotope
geochemistry
Opis:: Two global isotopic events, the early Sheinwoodian (early Wenlock) and that at the Silurian–Devonian transition, have been comprehensively studied in representative carbonate successions at Kytayhorod and Dnistrove, respectively, in Podolia, Ukraine, to compare geochemistry and biotic changes related correspondingly to the Ireviken and Klonk events. These two large−scale isotope excursions reveal different regional ecosystem tendencies. The well−defined increasing trend across the Llandovery–Wenlock boundary in siliciclastic input, redox states and, supposedly, bioproductivity, was without strict correlative relations to the major ¹³C enrichment event. The environmental and biotic evolution was forced by eustatic sea−level fluctuations and two−step climate change toward a glaciation episode, but strongly modified by regional epeirogeny movements due to location near the mobile Teisseyre−Törnquist Fault Zone. Thus, the global early Sheinwoodian biogeochemical perturbation was of minor depositional significance in this epeiric sea, as in many other Laurussian domains. Conversely, the Podolian sedimentary record of the Klonk Event exhibits temporal links to the abrupt δ¹³C anomaly, overprinted by a tectonically driven deepening pulse in the crucial S–D boundary interval. This carbon cycling turnover was reflected in the regional carbonate crisis and cooling episodes, paired with a tendency towards eutrophication and recurrent oxygen deficiency, but also with major storms and possible upwelling. Faunal responses in both Podolian sections follow some characters of the Silurian pattern worldwide, as manifested by conodont changeover prior to the major early Sheinwoodian isotopic/climatic anomaly. This contrasts with the relative brachiopod and chitinozoan resistances in the course of the Ireviken Event. Also, during the Klonk Event, a moderate faunal turnover, both in benthic and pelagic groups, occurred only near the very beginning of the prolonged ¹³C−enriched timespan across the system boundary, possibly due to progressive dysoxia and temperature drop. The characters point to a peculiarity of the Klonk Event by comparison with the Silurian global events, and some similarity already to the succeeding Devonian transgressive/anoxic episodes.
Źródło:: Acta Palaeontologica Polonica; 2012, 57, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: The Frasnian-Famennian events in a deep-shelf succession, Subpolar Urals: biotic, depositional, and geochemical records
Autorzy:: Yudina, A B
Racki, G.
Savage, N.M.
Racka, M.
Malkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/21692.pdf
Data publikacji:: 2002
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Famennian
biotic record
Frasnian
geochemical record
depositional record
geochemistry
Kellwasser crisis
conodont
biostratigraphy
paleontology
lithostratigraphy
carbon isotope
Opis:: The Frasnian–Famennian (F–F) boundary is well biostratigraphically documented in the Palmatolepis−rich deposits exposed along the Syv’yu River in the lower slopes of the Subpolar Urals. The thin−bedded calcareous−clayey−siliceous deep−slope succession of the Vorota Formation appears to represent continuous Domanic−type deposition throughout the world−wide carbonate crisis time, without evidence for the basal Famennian hiatus or a large−scale sedimentary perturbation within a regressive setting. The northernmost Laurussian sequence exhibits many well known signatures throughout the broad F–F timespan: the appearance of organicand clay−rich deposits, icriodontid and radiolarian blooms, and a correlative shift of several geochemical proxies towards hypoxic and high−productivity regimes, perfectly recorded by positive 13Ccarb excursions of +3.5‰. Integrative biotic, microfacies and geochemical data substantiate a longer−term oceanographic destabilization, attributable to multiple Earth−bound triggering factors in (episodically enhanced?) greenhouse climate and punctuated eustatic sea−level highstands, superimposed on the elevated deposition of organic carbon−rich sediments during the Upper Kellwasser Event. Unsteady eutrophicated, and oxygen−depleted ecosystems during the F–F biotic crisis interval could be assumed, especially when intensified by various spasmodic tectono−volcanic phenomena in the incipiently closing Ural Ocean.
Źródło:: Acta Palaeontologica Polonica; 2002, 47, 2
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Comparative oxygen and carbon isotopic records of Miocene and recent lacustrine unionid bivalves from Poland
Autorzy:: Błażejowski, B.
Racki, G.
Gieszcz, P.
Małkowski, K.
Kin, A.
Krzywiecka, K.
Powiązania:: https://bibliotekanauki.pl/articles/2060015.pdf
Data publikacji:: 2013
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: sclerochronology
stable isotopes
fresh water
Miocene and recent Unionidae
Bełchatów
Gil Wielki Lake.
Opis:: The δ13C and δ18O isotope data from both fossil (Miocene) and modern freshwater bivalve shells of family Unionidae from Poland (species Margaritifera flabellatiformis and Unio tumidus, respectively) show a similar, truncated sinusoidal pattern.. The isotopic profiles of the whole shell are visibly marked by three growth stages, linked with a progressive loss of environmental record because of declining intra-annual biocarbonate accretion rate. The juvenile and gerontic phases exhibit generally more positive and stable (plateau) isotopic pattern than the mid-age stage. An increasing δ13C trend is typical for the final life stage, likely influenced by nutrient overloading, reversing the tendency towards δ13C depletion throughout the individual’s life induced by metabolic processes. Due to the progressive loss of environmental signals through ontogeny, these initial and final isotopic profile segments probably correspond to, respectively, an instant signature of the first season growth, and a multiyear value set of summer maxima during geriatric stage. Vague seasonal cyclic record is the striking feature of the mid-age δ18O and δ13C profile slices. In case of low-amplitude δ18O curve, this is probably promoted by a sensitivity of the lake ecosystem to many dynamic intra-annual factors affecting water budget balance. This consistent signature mode seems to be typical for lake-dwelling unionid shells at least since Miocene from different climatic zones, as confirmed by coeval lacustrine low-latitude mussels from Amazonia. Thus, this isotope record is relevant to obtain information on the habitat and life cycle of the fossil freshwater bivalves, as well as could help understand modern environmental change.
Źródło:: Geological Quarterly; 2013, 57, 1; 113--122
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Faunal and facies changes at the Early-Middle Frasnian boundary in the north-western East European platform
Autorzy:: Zhuravlev, A V
Sokiran, E.V.
Evdokimova, I.O.
Dorofeeva, L.A.
Rusetskaya, G.A.
Malkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/20261.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: fauna change
Early-Middle Frasnian
East European Platform
Conodonta
Brachiopoda
Ostracoda
correlation
carbon isotope
Frasnian
Main Devonian Field
Opis:: Multidisciplinary study of the Early–Middle Frasnian boundary in the north−western East European Platform (Main Devonian Field) allows evaluation of changes in facies, brachiopod, ostracod, and conodont associations, as well as carbon isotope composition. Brachiopod and ostracod faunas, characterized by predominance of rhynchonellids, spiriferids, podocopids, and platycopids in the Early Frasnian, and by predominance of spiriferids, palaeocopids, and kloedenellocopids in the Middle Frasinan, demonstrate significant changes in dominance and diversity likely caused by regressiontransgression couplets in the extremely shallow−water environment. Changes in diversity of the conodont associations, represented mainly by shallow−water polygnathids and spathognathids, are controlled by sea−level fluctuations as well; however significant evolutionary turnover is absent. Deepening pulses lead to an increasing in diversity of both the benthic and nectic groups, whilst regressions cause diversity fall due to progressive habitat reduction. Most prominent decreasing in the fauna diversity is observed in the late Early Frasnian (Dubnik time) coinciding with the regressive phase of the Late Givetian to Early Frasnian eustatic cycle. Positive−negative δ¹³C excursion, detected in brachiopod calcite from the early interval of the Middle Frasnian, can be correlated with global isotopic perturbations near the Frasnian substage boundary: the positive 2.6‰ δ¹³C excursion is probably linked with enhanced primary production in high−nutrient regimes in the epeiric sea.
Źródło:: Acta Palaeontologica Polonica; 2006, 51, 4; 747-758
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki