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    Wyświetlanie 1-14 z 14
    Tytuł:
    Dumpstones as records of overturning ice rafts in a Weichselian proglacial lake (Rügen Island, NE Germany)
    Autorzy:
    Pisarska-Jamroży, M.
    Van-Loon, A. J. T.
    Bronikowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060089.pdf
    Data publikacji:
    2018
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    dumpstones
    dropstones
    ice-rafted debris
    Weichselian
    glaciolacustrine sediments
    Opis:
    Dumpstones and dropstones up to 0.8 m in size occur in a silty/sandy Weichselian glaciolacustrine succession near Dwasieden on Rügen Island in the SW Baltic Sea (NE Germany). The deposits are exceptional because two levels of dumpstones and dropstones are present, suggesting two dumping phases interrupting characteristic fine-grained glaciolacustrine sedimentation. Plastic downwarping of sediments below the dumpstones and dropstones result in soft-sediment deformation structures. The distribution and orientation of the long axes of the clasts are useful tools for the reconstruction of the state of the lake bottom, as well as for the water depth. The horizontal position of the gravels and boulders (parallel to the bedding) suggests deposition in relatively shallow-water. The dumping events are linked to iceberg rafting in a glacial lake during the Weichselian Glaciation (MIS 2).
    Źródło:
    Geological Quarterly; 2018, 62, 4; 917-924
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of composition changes and aeration time on the structure and rehydration of innovative freeze-dried gels
    Autorzy:
    Ciurzynska, A.
    Pisarska, A.
    Olsinski, I.
    Panfiluk, A.M.
    Ostap, M.S.
    Lenart, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/24190.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Źródło:
    International Agrophysics; 2018, 32, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Factors controlling sedimentation in the Toruń-Eberswalde ice-marginal valley during the Pomeranian phase of the Weichselian glaciation: an overview
    Autorzy:
    Pisarska-Jamroży, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/94659.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    sedimentology
    depositional mechanisms
    palaeohydraulics
    heavy minerals
    sandur
    Pleistocene
    Polska
    sedymentologia
    mechanizmy depozycyjne
    paleohydraulika
    minerały ciężkie
    sandr
    plejstocen
    Polska
    Opis:
    During the Pleistocene the Scandinavian ice sheet drained huge quantities of sediment-laden meltwaters. These meltwaters supplied ice-marginal valleys that formed parallel to the front of the ice sheet. Not without significance was the supply of ice-marginal valleys from extraglacial rivers in the south. Moreover, periglacial conditions during and after sedimentation in ice-marginal valleys, the morphology of valley bedrocks, and erosion of older sediments played important roles in the depositional scenarios, and in the mineralogical composition of the sediments. The mechanisms that controlled the supply and deposition in ice-marginal valleys were analysed on the basis of a Pleistocene ice-marginal valley that was supplied by northern and southern source areas in the immediate vicinity. Investigations were conducted in one of the largest ice-marginal valleys of the Polish-German lowlands, i.e., the Toruń-Eberswalde ice-marginal valley, in sandurs (Drawa and Gwda) supplied sediments and waters from the north into this valley, and on extraglacial river terraces (pre-Noteć and pre-Warta rivers), formed simultaneously with the sandurs and ice-marginal valley (Pomeranian phase of Weichselian glaciation) supplied sediments and waters from the south into this valley. A much debated question is how similar, or different, depositional processes and sediments were that contributed to the formation of the Toruń-Eberswalde ice-marginal valley, and whether or not it is possible to differentiate mostly rapidly aggraded sandur sediments from ice-marginal valley sediments. Another question addresses the contribution of extraglacial feeding of the Toruń-Eberswalde ice-marginal valley. These matters were addressed by a wide range of analyses: sediment texture and structure, architectural elements of sediments, frequency of sedimentary successions, heavy-mineral analysis (both transparent and opaque heavy minerals), analysis of rounding and frosting of quartz grains, and palaeohydrological calculations. Additionally, a statistical analysis was used. The specific depositional conditions of distribution of sediments in ice-marginal valley allow to distinguish new environment of ice-marginal valley braided river. The spectrum of depositional conditions in the Toruń-Eberswalde ice-marginal valley and their specific palaeohydraulic parameters allow to distinguish three coexisting zones in the ice-marginal valley braided-river system: (1) deep gravel-bed braided channel zone with extensive scours, (2) deep sand-bed braided channel zone with transverse bars, and (3) marginal sand-bed and gravel-bed braided channel zone with diamicton and breccia deposition, which were characterised in detail. Some of the results have been published previously, which is why they are discussed in the present paper within the context of new data.
    Źródło:
    Geologos; 2015, 21, 1; 1-29
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Glacifluwialne facje strumieni przeciążonych zawiesiną na przykładzie plejstocenskich osadów wschodniej Jutlandii i Pomorza Zachodniego
    Glaciofluvial facies of hyperconcentrated flow (the Pleistocene of Denmark and Western Pomerania)
    Autorzy:
    Pisarska-Jamroży, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074531.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    strumienie przeciążone zawiesiną
    analiza litofacjalna
    hyperconcentrated flow
    lithofacies analysis
    Opis:
    Beverage & Culbertson (1964) defined hyperconcentrated flow as a flow of water-sediment mixture with a behaviour intermediate between that of a debris flow (mudflow) and that of a stream flow. However, the essence of this definition has largely been misunderstood and lost in the subsequent literature. It would appear that almost any deposit can possibly be attributed to a hyperconcentrated flow, because this genetic label has been attached to: non-stratified deposits with normal or inverse-to-normal grading, as well as deposits that were stratified; some of these deposits had polymodal and only other bimodal grain-size distribution, occasionally bearing outsized cobble gravels and boulders. Arguably, the Beverage and Culbertson original definition implies a turbulent, non-Newtonian fluidal flow with pseudoplastic rheological behaviour, intermediate between that of a mudflow (plastic) and a stream flow (Newtonian fluid), which may suggest sediment deposition by rapid dumping from suspension (Lowe, 1988; Vrolijk & Southard, 1997), rather than tractional emplacement. The study areas in Western Pomerania and east Jutland are located in transition fan and glaciofluvial fans (Weichselian glaciation). Three assemblages of deposits derived from hyperconcentrated flow are exposed: massive cobble gravel (monofacial association GCm), massive sand (monofacial association Sm) and massive sand and planar-cross bedded sand (lithofacies association Sm, Sp). The reason for significant grain-size distribution diversity of sediments derived from the same depositional process was difference in competence flow which came out from discharge flow changes. Despite different grain framework grain-size distribution, grains within hyperconcentrated flows were mostly moved by turbulences and dispersive grain pressure.
    Źródło:
    Przegląd Geologiczny; 2007, 55, 6; 503-510
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakie cechy litologiczne osadów warto kodować, a jakie nie?
    Which features of deposits should be included in a code and which not?
    Autorzy:
    Zieliński, T.
    Pisarska-Jamroży, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074953.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    kod litofacji
    kod litogenetyczny
    struktura
    tekstura
    analiza sedymentologiczna
    klastyczne skały
    elementy architektoniczne
    lithofacies code
    lithogenetic code
    structure
    texture
    sedimentological analysis
    clastic rocks
    architectural elements
    Opis:
    Since the classical publications on lithofacies and architectural element codes (Miall, 1977, 1985), sedimentologists have made several attempts to optimize those codes. The authors present and discuss the codes of lithology and the origin of clastic rocks which have been proposed in the last thirty five years. It appears that the codes hitherto proposed are unsatisfactory because they fail to reflect several important features of deposits. It is postulated that most of Miall’s original rules should be used as a starting point but some additional rules should also be followed: (1) lithofacies symbols should not be used to describe interpretations but lithologic features only; (2) code of texture should contain two capital letters at the most; (3) structure should be described by three lower-case letters at the most; (4) genetic code should indicate depositional process or parent depositional form by capital letters; (5) coding is best applicable in practice if both the lithofacies and genetic codes are used jointly. The present authors propose a modified combination of lithofacies and lithogenetic symbols, shown to make sedimentological analyses more effective and unambigous.
    Źródło:
    Przegląd Geologiczny; 2012, 60, 7; 387-397
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Processing of sodium sulphate solutions using the EED method: from a batch toward a continuous process
    Autorzy:
    Pisarska, B.
    Mikołajczak, W.
    Jaroszek, H.
    Nowak, M.
    Dylewski, R.
    Cichy, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/779620.pdf
    Data publikacji:
    2017
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    electro-electrodialysis
    waste processing
    process conditions
    Opis:
    In a batch electro-electrodialysis (EED), sodium sulphate solution with an initial concentration of 80.90 g/dm3  was converted to obtain solutions of sodium hydroxide (13.96%) and sulphuric acid (10.15%) and a dialysate (3.23 g/dm3 of sulphate ions). Changes in the EED process′ performance (temperature, cell voltage, concentrations, energy consumption) with an increasing conversion degree of salt are presented. Based on the presented results of the batch experiment, conditions necessary to run the process continuously are discussed. A single pass method is inapplicable due to excessive heating of the electro-electrodialyser. A cascade method enables interstage cooling of the solutions, providing temperatures suitable for ion-exchange membranes to work. Increasing the number of stages in the cascade reduces both the number of electro-electrodialysers and specific electric energy consumption, providing the same production capacity. However, this increases the investment cost.
    Źródło:
    Polish Journal of Chemical Technology; 2017, 19, 1; 54-58
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Procesy elektromembranowe w oczyszczaniu wieloskładnikowego ścieku przemysłowego – koncepcja i badania wstępne
    Electromembrane processes in treatment of mixed industrial wastewater – an introductory research
    Autorzy:
    Jaroszek, H.
    Nowak, M.
    Pisarska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1208254.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego. Zakład Wydawniczy CHEMPRESS-SITPChem
    Tematy:
    elektrodializa
    siarczan sodu
    ścieki przemysłowe
    ochrona środowiska
    electrodialysis
    sodium sulfate
    industrial wastewater
    environmental protection
    Opis:
    Przedstawiono koncepcję przerobu ścieku przemysłowego zawierającego zanieczyszczenia organiczne (ChZT = 34 g O2/l) oraz siarczan sodu i kwas siarkowy. Koncepcja polega na poddaniu ścieku elektro-elektrodializie (EED) w trójkomorowym elektrodializerze wyposażonym w membranę anionoi kationowymienną. Produkty tego procesu stanowią roztwór H2SO4 i roztwór NaOH, które mogą zostać zawrócone do procesu, a odmineralizowany roztwór (ściek), nadaje się do oczyszczania w oczyszczalni biologicznej. Wykonane wstępne badania procesu prowadzą do wniosku, że warunkiem efektywności procesu oczyszczania jest dobranie membran jonitowych o stabilnej charakterystyce oraz wysokich, ale koniecznie zbliżonych, selektywnościach.
    This study presents method of treatment of industrial wastewater containing organic compounds (COD = 34 g/l), sodium sulfate and sulfuric acid. Treatment comprises electro-electrodialysis (EED) in a three-chamber electrolyzer equipped with anion- and cation exchange membranes. Ideally, products of EED: H2SO4 and NaOH, would be returned to production process while demineralized waste should be suitable for biological treatment in a sewage plant. The results of the study revealed that the efficacy of process strongly depends on similar selectivity and high stability of used ion exchange membranes.
    Źródło:
    Chemik; 2013, 67, 10; 1011-1018
    0009-2886
    Pojawia się w:
    Chemik
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reconstruction of sediment provenance and transport processes from the surface textures of quartz grains from Late Pleistocene sandurs and an ice-marginal valley in NW Poland
    Autorzy:
    Woronko, B.
    Pisarska-Jamroży, M.
    van Loon, A. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/94315.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    quartz grain micromorphology
    ice-marginal valley
    sandur
    Weichselian glaciation
    Polska
    mikromorfologia ziaren kwarcu
    pradolina
    zlodowacenie północnopolskie
    Polska
    Opis:
    During the Pomeranian phase of the Weichselian glaciation (~17–16 ka), the Toruń-Eberswalde ice-marginal valley (NW Poland and easternmost Germany) drained water from the Pomeranian ice sheet, while intensive aeolian processes took place across Europe in the foreland of the Scandinavian ice sheet (‘European Sand Belt’). The micromorphology of the quartz grains in the Toruń-Eberswalde ice-marginal valley shows no traces of these aeolian processes, or only vague signs of aeolian abrasion. This is unique among the aeolian sediments in other Pleistocene ice-marginal valleys in this part of Europe. The study of the surfaces of the quartz grains shows that the supply of grains by streams from the south was minimal, which must be ascribed to the climate deterioration during the Last Glacial Maximum, which resulted in a decrease of the discharge of these extraglacial rivers to the ice-marginal valley.
    Źródło:
    Geologos; 2015, 21, 2; 105-115
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola osadów spływowych w interpretacjach paleogeograficznych
    Autorzy:
    Pisarska-Jamroży, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/294332.pdf
    Data publikacji:
    2008
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    osady spływowe
    spływ kohezyjny
    spływ ziarnowy
    plejstoceńskie osady spływowe
    Źródło:
    Landform Analysis; 2008, 9; 256-259
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The relation between optical bleaching and sedimentological features of fluvial deposits in the Toruń Basin (Poland)
    Autorzy:
    Weckwerth, P.
    Przegiętka, K.
    Chruścińska, A.
    Pisarska-Jamroży, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060018.pdf
    Data publikacji:
    2013
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    OSL age in version
    quartz
    optical bleaching
    sand-bed braided river
    ice-marginal streamway valley
    Opis:
    Distributions of equivalent doses (DE) obtained by the Single Aliquot Regenerative-dose (SAR) OSL method applied for large aliquots of coarse quartz grains extracted from fluvial sediments are presented and analysed with respect to a fluvial palaeoenvironment. The Nowe Dąbie and Łochowo fluvial succession from the western part of Toruń Basin (eastern part of Noteć–Warta streamway, Toruń-Eberswalde ice-marginal valley) was analysed. The fluvial depositional conditions controlling the extent of daylight bleaching are reconstructed by sedimentological studies. The relation between the amount of bleaching and sedimentological properties of fluvial deposits indicate that ripple cross-laminated sands that accumulated on the floodplain and horizontally-bedded sands deposited in shallow channels are more appropriate for OSL dating than sands derived from the deep channel. Along with luminescence results obtained for the river deposits, data measured from an ancient pottery sample, ensuring complete reset of the OSL signal, are presented, compared to and discussed. On this base the poorly bleached sediment samples are identified and an adjustment factor is introduced for correcting their OSL dating results in order to avoid age inversion. The application of the adjustment factor is found to minimize overestimation of OSL ages of sediments.
    Źródło:
    Geological Quarterly; 2013, 57, 1; 31--44
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wastefree purification method for potassium brine used in industrial electrochemical processes
    Autorzy:
    Pisarska, B.
    Nowak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/779579.pdf
    Data publikacji:
    2010
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    solanka potasu
    proces oczyszczania
    potassium brine
    purification processes
    Opis:
    A new concept is presented for purifying potassium brine (KCl solution) obtained from technical-grade potassium chloride. This concept is based on the hydroxide/carbonate method of removing ions of alkaline earth metals and on separating SO 4 2- ions by means of zirconyl anion exchanger. The purification process provides the following products: purified potassium brine suitable for the manufacture of KClO 3 or for further purification and subsequent manufacture of KOH, Cl 2 and H 2 using membrane cell technology, magnesium and potassium containing agricultural lime (chalk) suitable for neutralizing soil acidity and enriching soil with magnesium and potassium, and technical-grade potassium sulphate containing 99.0 to 99.8% K 2 SO 4 .
    Źródło:
    Polish Journal of Chemical Technology; 2010, 12, 2; 4-8
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zróżnicowanie petrograficzne plejstoceńskich osadów Pojezierza Myśliborskiego na przykładzie żwirów z Chełma Górnego i Cedyni
    Petrographical differentiation of Pleistocene deposits of Myoelibórz Lakeland (Western Pomerania) based on gravels from Chełm Górny and Cedynia
    Autorzy:
    Górska-Zabielska, M.
    Pisarska-Jamroży, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074619.pdf
    Data publikacji:
    2008
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    żwiry petrograficzne
    fennoskandzkie wychodnie
    Pomorze Zachodnie
    gravel petrography
    indicator erratics
    Scandinavian recharge area
    Western Pomerania
    Opis:
    Petrographical content of Pleistocene gravels (4–10 mm) derived from till and glaciofluvial deposits of Western Pomerania was studied. The coarse-grained gravels (20–60 mm) have been additionally investigated for indicator erratics. There are three dominant petrographical groups within the gravels regardless of genetic type of sediments: crystalline rocks, Lower Paleozoic limestones and sandstones. Indicator erratics indicate the most effective glacial erosion in south-eastern Sweden. Theoretical stone center is located at 57.7°N and 16°E, that is in Smĺland. Other regions where the ice sheet could have been nourished were located in Dalarna and Ĺland Islands. The most numerous erratics found in the glacial sediments are: Smĺland granites and quartz porphyries, Ĺland rapakivi granites and quartz porphyries, Bredvad porphyries, Venjan and Grönklitt porphyrites.
    Źródło:
    Przegląd Geologiczny; 2008, 56, 4; 317-321
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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