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Tytuł:
Late Quaternary evolution of the western Nordenskiöld Land
Autorzy:
Musiał, Andrzej
Horodyski, Bogdan
Kossobudzki, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2052727.pdf
Data publikacji:
1993
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary evolution
Źródło:
Polish Polar Research; 1993, 14, 3; 259-273
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quaternary sediments of the southwestern Nordenskiöld Land, West Spitsbergen
Autorzy:
Musiał, Andrzej
Drecki, Jacek
Horodyski, Bogdan
Kossobudzki, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2052832.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary
erratics
Źródło:
Polish Polar Research; 1991, 12, 2; 137-147
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First thermoluminescence datings of Pleistocene sediments from Sörkapp Land, Spitsbergen
Autorzy:
Butrym, Jerzy
Lindner, Leszek
Marks, Leszek
Szczęsny, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2053248.pdf
Data publikacji:
1987
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary chronostratigraphy
Źródło:
Polish Polar Research; 1987, 8, 3; 217-229
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pre-Quatemary glaciations of West Antarctica: evidence from the South Shetland Islands
Autorzy:
Birkenmajer, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2057378.pdf
Data publikacji:
1984
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctica
pre-Quaternary glaciations
Źródło:
Polish Polar Research; 1984, 5, 3-4; 319-329
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geodynamic aspects of studies of Quaternary inland sediments in South Spitsbergen (attempt to synthesis)
Autorzy:
Lindner, Leszek
Marks, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/2052864.pdf
Data publikacji:
1990
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary geology
Źródło:
Polish Polar Research; 1990, 11, 3-4; 365-387
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Late Quaternary evolution of the Tjörn Valley, Wedel Jarlsberg Land, Spitsbergen
Autorzy:
Szczęsny, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2053251.pdf
Data publikacji:
1987
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary glaciations
Źródło:
Polish Polar Research; 1987, 8, 3; 243-250
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency of acetone-butanol-ethanol-water system separation by pervaporation
Autorzy:
Marszałek, J.
Kamiński, W. L.
Powiązania:
https://bibliotekanauki.pl/articles/185102.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
perwaporacja
pervaporation
biobutanol
quaternary system
Opis:
The article focuses on multicomponent system separation with the use of an innovative membranebased technique i.e. pervaporation. Pervaporation is a membrane technique for separation of liquid mixtures on solid nonporous membranes. Pervaporation is used in this study to separate a quaternary system acetone-butanol-ethanol-water. Such a system may be derived from ABE fermentation process, and the resulting product, biobutanol, is a potential biofuel and may be used in internal combustion engines. Experiments in the study involving concentration of butanol by pervaporation were performed using PERVAP 4060 flat-sheet commercial membrane. To describe the PV process a semi-empirical approach was used. As a result of experiments and calculations permeance coefficients were obtained. Separation and permeance factors were calculated to assess the efficiency of the system separation. Beforehand, activity coefficients were determined for all the components of the mixture with the NRTL equation. Separation coefficients for all the components differed depending on process parameters: concentration, feed flow rate and process temperature. The study confirmed the separation effect of the quaternary system. The most interesting results were obtained for the concentration of butanol. Pervaporation allows to concentrate butanol over 10 times. The permeance coefficient reached for butanol an average value of 7.06 10-3 in comparison with the results for ethanol 3.24 10-2 and acetone 1.83 10-2 [kmol(m2h)-1]. The temperature change from 50 to 70 [degrees]C led to an increased permeance factor and there was no apparent effect on it in the feed flow rate. Due to the hydrophobicity of the membrane water fluxes in the quaternary system were negative.
Źródło:
Chemical and Process Engineering; 2012, 33, 1; 131-140
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quaternary landforms and deposits in southern Spitsbergen on the ground of photointerpretation
Autorzy:
Szczęsny, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2052810.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen Quaternary
photointerpretation
geomorphology
Źródło:
Polish Polar Research; 1991, 12, 3; 289-343
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quaternary landforms and sediments, and morphogenetic evolution of Treskelen-Hyrnefjellet-Kruseryggen area, Wedel Jarlsberg Land, Spitsbergen
Autorzy:
Lindner, Leszek
Marks, Leszek
Szczęsny, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2052877.pdf
Data publikacji:
1990
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary
photogeological mapping
Źródło:
Polish Polar Research; 1990, 11, 3-4; 389-400
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Glaciotectonics of Belar
Autorzy:
Karabanov, A.
Powiązania:
https://bibliotekanauki.pl/articles/2059385.pdf
Data publikacji:
2000
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Belarus
Quaternary
glaciation
glaciotectonic
glaciodislocation
Opis:
Different glaciotectonic structures and landforms occur in the territory of Belarus: folded dislocations, glacial depressions, rafts and injective features. The largest folded glaciodislocation is 30 km long and 8-11 km wide, and glacial rafts are up to 1.5 km long and 20-25 m thick. Many glaciotectonic structures are clearly expressed in landscape. Most large folded glaciodislocations were formed during the Sozh (Warthe) Stage of the Dnieper Glaciation.
Źródło:
Geological Quarterly; 2000, 44, 1; 1-7
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poligenetyczne obniżenia podczwartorzędowe i porwaki w osadach plejstoceńskich między Wieprzą a Łupawą
Polygenetic sub-Quaternary depressions and ice rafts in Pleistocene deposits between Wieprza and Łupawa rivers
Autorzy:
Orłowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/294414.pdf
Data publikacji:
2008
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
obniżenia i wzniesienia podczwartorzędowe
porwak
sub-Quaternary depressions
sub-Quaternary elevations
ice rafted material
Opis:
Na podstawie materiałów kartograficznych z zakresu geologii zlodowaceń plejstoceńskich na Pomorzu oraz w oparciu o mapę geologiczną rzeźby podczwartorzędowej wykonaną przez autora dokonano analizy porównawczej dotyczącej rozmieszczenia i genezy form. Wydzielono typy obniżeń. Opisano porwaki glacjalne, przedstawiając ich lokalizację, litologię, stratygraficzne usytuowanie i genezę. Wskazano na potrzebę zweryfikowania stratygrafii plejstocenu na wybranych arkuszach geologicznych 1:50 000.
Sub-Quaternary buried relief between Wieprza and Łupawa rivers in northern Poland has been subject to geological research, by means of analysis of geological maps indicating sub-Quaternary morphology. For comparative analysis, maps prepared within the Detailed Geological Map of Poland 1:50,000 project and maps executed by the present author in identical scale have been used. The course of sub-Quaternary depressions on either maps shows discrepancies. Five genetic types have been distinguished, although their polygenesis is inferred. The oldest sub-Quaternary valleys are of late Cretaceous age and their origin had been influenced by Alpine tectonics. In the Tertiary, a valley system with north-and north-west-oriented drainage developed, with the base-level along the axis of the present-day Baltic Sea. During Pleistocene glaciations the older relief was covered by glacial and glacifluvial deposits. The sub-Quaternary depressions are important water suppliers for local people. In addition, an attention has been paid to the age and source of ice rafted material, as well as to the timing of their deposition, as these are important constraints in the Pleistocene stratigraphy. Ice rafted material from Możdżanów and Krzywań has special economic importance, bearing amber and phosphates, respectively.
Źródło:
Landform Analysis; 2008, 7; 119-129
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of a quaternary polyprenyl ammonium salt
Autorzy:
Sizova, Olga
Utkina, Natalia
Kalinchuk, Nadezhda
Danilov, Leonid
Maltsev, Sergey
Powiązania:
https://bibliotekanauki.pl/articles/1040889.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
polyprenol
quaternary ammonium salts
cationic lipids
Opis:
Reaction of primary C55-allylic alcohol moraprenol (WT3C7-9-OH, a polyprenol from mulberry leaves) with triethylamine in the presence of phosphorus oxychloride leads to a quaternary ammonium chloride with a good yield (72%) and high cis-stereoselectivity of the terminal isoprene unit. Cationic polyprenyl derivatives may be useful for transfection and immunological studies.
Źródło:
Acta Biochimica Polonica; 2007, 54, 4; 869-872
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Late Pleistocene and Holocene relief remodelling in the Ebbadalen-Nordenskiöldbreen region in Olav V Land, central Spitsbergen
Autorzy:
Kłysz, Piotr
Lindner, Leszek
Marks, Leszek
Wysokiński, Lech
Powiązania:
https://bibliotekanauki.pl/articles/2053119.pdf
Data publikacji:
1989
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary
landforms and sediments
Źródło:
Polish Polar Research; 1989, 10, 3; 277-301
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of a circular structure in eastern Pomerania (northern Poland) : a hypothesis of its origin
Autorzy:
Uścinowicz, G. S.
Powiązania:
https://bibliotekanauki.pl/articles/2060338.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
circular structure
northern Poland
Neogene
Quaternary
Opis:
The possible existence of a circular structure in the Kościerzyna region (northern Poland) was suggested in two papers in the 1980s. The current studies were aimed at verifying this hypothesis. Analysis of a digital terrain model of the pre-Quaternary surface relief as well as of the present terrain revealed the existence of a large structure of ca. 50 km in diameter. Its geometry was established based on a model of the Neogene/Pliocene surface and identifiable lineaments. Its characteristic feature is the presence of rim-like forms, an internal plateau, and a “high” in the centre. The structure is estimated to date from before the Pleistocene. The circular structure has been reshaped by glacial erosion and accumulation, and is now buried under Quaternary deposits. The existence of the Kościerzyna circular structure was confirmed by conducted studies, but my hypothesis of an impact origin is still uncertain and needs to be confirmed by future research.
Źródło:
Geological Quarterly; 2017, 61, 1; 205--213
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Malacofauna of the Holsteinian lake deposits at Hrud II (Eastern Poland) and its palaeoecological significance
Autorzy:
Szymanek, M.
Powiązania:
https://bibliotekanauki.pl/articles/2058942.pdf
Data publikacji:
2012
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Quaternary
Holsteinian
lake deposits
molluscs
palaeoenvironment
Opis:
Mollusc-bearing deposits at Hrud II (Eastern Poland) accumulated in the western part of a palaeolake of Holsteinian age (MIS 11). The faunal assemblage is typical of freshwater environments and presumably represents a part of the interglacial climatic optimum (Carpinus–Abies Zone). On the basis of its varied composition, the evolution of the water body is described. Reinterpretation of the data from the eastern part of the lake (Hrud I) and combining of the results from both sites enable a wider palaeoecological reconstruction. Fluctuations in lake level, water dynamics and changes in the aquatic vegetation are inferred from quantitative relations between selected molluscs, especially Lithoglyphus jahni, Valvata piscinalis and Bithynia tentaculata, which prevail in the deposits investigated. A predominance of Valvata piscinalis indicates a rise in water level, whereas the communities with abundant Bithynia opercula are typical of a more shallow lake with rich reed fields. Amelioration of the trophic conditions between the pre-optimal and optimal part of the Holsteinian Interglacial can also be recognised.
Źródło:
Geological Quarterly; 2012, 56, 1; 117-126
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential of kite aerial photography for Quaternary investigations in Poland
Autorzy:
Aber, J. S.
Gałązka, D.
Powiązania:
https://bibliotekanauki.pl/articles/2059377.pdf
Data publikacji:
2000
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Quaternary
aerial photography
kite
geomorphology
mapping
Opis:
Aerial photographs taken from kites provide a versatile and low-cost means to acquire high-resolution, large-scale imagery for special Quaternary investigations. Kite aerial photographs (KAP) are typically taken from heights of 50-150 m using light-weight automatic cameras. Pictures may be acquired in vertical and oblique vantages. Scanning of photographs and digital processing allow for resampling, enhancement, and analysis of images. We have utilized basic KAP at five sites in eastern and northern Poland in order to evaluate the potential of KAP for Quaternary investigations. Our preliminary results suggest that KAP may provide detailed and repetitive imagery of geomorphic conditions, soils, land cover/use, and other surface features related to Quaternary processes, landforms, and deposits. However, KAP will not replace conventional aerial photography for general survey and mapping purposes.
Źródło:
Geological Quarterly; 2000, 44, 1; 33-38
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phase Equilibria in the Bi-In-Sn-Zn System. Thermal Analysis vs. Calculations
Autorzy:
Dębski, A.
Onderka, B.
Gąsior, W.
Gancarz, T.
Powiązania:
https://bibliotekanauki.pl/articles/356744.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermodynamics
differential thermal analysis
quaternary alloys
Opis:
With the use of the differential thermal analysis (DTA), studies of the phase transitions were conducted for 90 of alloys from the quaternary Bi-In-Sn-Zn system and for the constant ratio of Bi:In and Bi:Sn. The studies were conducted for the alloys prepared from the purity metals (Bi, In, Sn, Zn = 99.999 mas. %) by way of melting in a graphite crucible in a glove-box filled with Ar, in which the impurities level was less than 0.1 ppm. After melting and thorough mixing, the liquid alloys were poured out into a graphite test mold. The phase transition temperature data obtained from the DTA investigations were next confronted with those determined from the calculations based on the binary and ternary optimized thermodynamic parameters available in the literature. It was found that the experimental and the calculated phase transition temperatures were in good agreement.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 4; 1945-1955
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palaeoclimate and pedosedimentary reconstruction of a middle to late Pleistocene loess-palaeosol sequence, Prymorske, SW Ukraine
Autorzy:
Stephens, Mark
Krzyszkowski, Dariusz
Ivchenko, Andriy
Majewski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/2027392.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Ukraine
Quaternary
loess
palaeosols
magnetic susceptibility
Opis:
A new investigation and palaeoenvironmental reconstruction of the locss-palaeosol sequence at Prymorskc, SW s q Ukraine is presented using soil structures, grain size, mineral magnetics, organic carbon and calcium carbonate determinations. Six units of the established Ukraine Quaternary stratigraphical scheme have been identified and analysed above and including the Zavadivka (Holsteinian) marker horizon - Dnieper, Kaidaky, Tiasmyn, Pryluky and Udai. Precipitation and temperature are tentatively reconstructed from soil and sedimentary proxies calibrated by modern analogues. Increased temperatures and precipitation to today are inferred for the red-brown Zavadivka palaeosol. Overlying Zavadivka is the Dnieper loess containing a gley and two chernozcms above, possibly representing climatic variations of the Saalian Glaciation. The calcified chernozem Kaidaky is separated by a thin loess from the brown/ chestnut Pryluky palaeosol (Eemian) which has features indicating drier conditions to the present. Non-gleyed palaeosols exhibit an enhanced magnetic susceptibility (MS) signal relative to the less weathered loess and highlights the palaeoclimatic potential of the technique. The most well developed palaeosol from this study has the highest MS value (Zavadivka: 80-1 o·8 SJ units) but this relationship is not always found in the Black Sea region. Previous MS analyses at Prymorske (Nawrocki et al. 1999) report significantly higher values to those of this study. Consequently the MS curve at Prymorske cannot be used with confidence for palaeoenvironmental reconstruction and inter-regional correlation without further investigation and modern analogue study.
Źródło:
Studia Quaternaria; 2002; 3-17
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Middle and Late Quaternary evolution of Spitsbergen against global changes
Autorzy:
Lindner, Leszek
Marks, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/2052728.pdf
Data publikacji:
1993
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
Spitsbergen
Quaternary stratigraphy
glacioisostatic rebound
Źródło:
Polish Polar Research; 1993, 14, 3; 221-241
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Krzemienie w czwartorzędowym nadkładzie pokładu węgla brunatnego w Sieniawie
Flints in quaternary overburden of the brown coal bed in Sieniawa
Autorzy:
Bzowski, Z.
Dawidowski, A.
Kropornicki, Z.
Powiązania:
https://bibliotekanauki.pl/articles/372276.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
krzemień
czwartorzęd
badania
flint
Quaternary
researches
Opis:
W pracy zaprezentowano na tle warunków geologicznych charakterystykę znalezionych krzemieni pochodzących z piasków szczytów wzgórz morenowych oraz z gliny zwałowej w czwartorzędowym nadkładzie pokładu węgla brunatnego w Sieniawie. Krzemienie składają się z drobnoziarnistego autogenicznego kwarcu, trudno identyfikowanej ilości amorficznego chalcedonu oraz śladowej ilości goethytu i być może moganitu. Krzemienie zawierają od 0,15 do 0,36% węgla organicznego oraz w ilościach śladowych takie metale jak mangan, stront, tytan i cynk. Trudno jest jednoznacznie wyznaczyć, które z badanych metali mogą być związane z genezą krzemieni, ich wiekiem lub taką cechą jak barwa i jej strefowe zmiany. Przypuszczalnie badane krzemienie mogą pochodzić z utworów węglanowych kredy i/lub jury występujących w północno-zachodniej Polsce lub w rejonie na północ od wybrzeża (dno Bałtyku).
In the paper, geological conditions and characteristics of found flints originated from sands and boulder clay are presented. Flints are present in Quaternary overburden of the brown coal bed in Sieniawa, Poland and they consist of fine-grained authigenic quartz, hard to identify amount of amorphous chalcedon and trace amounts of goethite and possibly moganite. Flints contain from 0,15 to 0,36% of total organic carbon and trace amount of metals such as manganese, strontium, titanium and zinc. Presumably, investigated flints may origin from Jurassic and/or Cretaceous carbonate formations occurring in the North-Western parts of Poland or in the region due north from polish coast line (bottom of the Baltic Sea).
Źródło:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski; 2010, 137 (17); 56-64
1895-7323
Pojawia się w:
Zeszyty Naukowe. Inżynieria Środowiska / Uniwersytet Zielonogórski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of metal corrosion in wood treated with new-generation water-borne preservatives
Autorzy:
Can, Ahmet
Sivrikaya, Hüseyin
Taşcioğlu, Cihat
Powiązania:
https://bibliotekanauki.pl/articles/342791.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
alkaline copper quaternary (ACQ)
boric acid (BA)
micronized copper quaternary (MCQ)
nano boron (NB)
corrosion test
Opis:
In this study, the corrosion performances of ammonium copper quaternary (ACQ) and boric acid (BA) wood preservatives were investigated, with micronized copper quaternary (MCQ) and nano boron (NB) used as reference materials. In the study, Scots pine (Pinus sylvestris L.) wood samples were impregnated according to the full-cell process method with ACQ at 2.4% concentration, BA at 4% and MCQ and NB at 1%. The ACQ- and BA-impregnated samples were then impregnated for a second time using five different water-repellent materials: tall oil, linseed oil, sodium silicate, methyl hydrogen silicone and N'-N-(1,8- naphthalyl)hydroxylamine. Polyethylene glycol (PEG) 600 and aluminum sulfate were introduced as single impregnations in the form of homogeneous mixtures with ACQ and BA. The corrosion properties of the impregnated and control samples, including metal weight loss (MWL) and corrosion depth, were examined. The MWL values of the ACQ-impregnated samples showed an increase compared to the control group. The MWL values of the MCQ-impregnated samples were lower than those of the samples impregnated with ACQ, whilst the MWL values of the BA-impregnated samples were higher than those of the samples impregnated with NB.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2020, 62, 205; 59-68
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quaternary evolution of a Carpathian Foothills area: An example from the East Carpathians of Poland
Autorzy:
Zuchiewicz, W.
Zasadni, J.
Powiązania:
https://bibliotekanauki.pl/articles/191928.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
Quaternary sediments
tectonic geomorphology
neotectonic evolution
Polska
Opis:
The East Carpathian Foothills of Poland witnessed two episodes of relief planation in the Pliocene, followed by formation of Early Pleistocene strath terraces preserved on flat-topped meander spurs in the San River valley at altitudes of 100-120 m above recent floodplains. In the following stages, intense erosion produced of a flight of strath terraces that are provisionally dated to the Narevian or Sanian-1 (Menapian or Elsterian-1; 75-80 m), Sanian-2 (Elsterian-2; 40-60 m), Odranian and Wartanian (Drenthe, Warthe; 20-30 m), and Vistulian (Weichse- lian; 8-16 m) times. During glacial stages, solifluction deposits mantled the feet of gentle slopes being coeval with fluvial deposition and accumulation of loesses and loess-like sediments on either side of the San River valley, particularly intense in the Weichselian. Interglacial warmings fostered downcutting of the pre-existing fluvial sediments as well as formation of fossil soils within loess sequences and deposition of peat in abandoned channels. In the Late Pleistocene and at the beginning of the Holocene, diversified tectonic movements took place leading to displacement of Weichselian and Holocene straths. During the Holocene, in turn, cut-and-fill terrace steps were shaped, organogenic sediments filled abandoned channels and oxbow lakes, and slopes became re-modelled by landslides and slopewash. The pattern of different types of relief, together with spatial distribution of topolineaments and some photolineaments in the eastern portion of the Polish Outer Carpathians, has been shaped due to mutual interactions between climatic, lithologic and tectonic factors. Well-pronounced topolineaments either follow fault-related zones of weakness, are associated with dense network of extensional cross-fold joints, or indicate recent reactiva-tion of some faults and/or joint sets.
Źródło:
Annales Societatis Geologorum Poloniae; 2010, 80, No 3; 327-345
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discordances of the top surface of carboniferous deposits of the Upper Silesian Coal Basin
Autorzy:
Jura, D.
Powiązania:
https://bibliotekanauki.pl/articles/1204918.pdf
Data publikacji:
2002
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
morphotectonic of discordances
Carboniferous to Quaternary events
Opis:
Geological boundaries of the structural stages between Late Variscan Moravian-Silesian-Cracow orogene and Saalian Sławków Graben taphrogene, Early and Late Kimmerian epeirogene, Middle Alpine Silesian-Cracow Monocline, and Late Alpine Carpathian Foredeep are defined as discordances. These structural surfaces of different age, present in the top surface of Carboniferous deposits of the Upper Silesian Coal Basin, were investigated in morphotectonic research. Discordances in the morphotectonical record separate older faulted and folded Carboniferous deposits from younger, nearly subhorizontal rocks of epi-Variscan cover. This polychronic and polygenetic geological heterochronous boundary of the top surface of Carboniferous deposit consists of the following coeval discordances: sub-Permian, sub-Triassic, sub-Jurassic, sub-Cretaceous, sub-Miocene and sub-Quaternary. Those buried erosional surfaces with ancient landforms were some formed by terrestrial, others by marine planation. The repeated erosion of Carboniferous deposits and sedimentation of covers as well as fault, monocline and fold-flexure deformations are reflected in differentiated configuration of discordances in the height range from about 400 m a.s.l. to 6000 m b.s.l.
Źródło:
Polish Geological Institute Special Papers; 2002, 7; 125-132
1507-9791
Pojawia się w:
Polish Geological Institute Special Papers
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First record of tempestites from Quaternary lacustrine deposits in the Ağrı Basin (Eastern Anatolia, Türkiye) : palaeoclimatological and palaeogeographic implications
Autorzy:
Üner, Serkan
Powiązania:
https://bibliotekanauki.pl/articles/27324244.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
tempestite
hummocky cross-stratification
Quaternary
Eastern Anatolia
Opis:
Several event layers have been identified in lacustrine deposits in the AErI Basin of Anatolia (E Türkiye). Sedimentological and palaeontological data newly indicate a storm-induced origin for some of them. The sedimentary structures in three sections, a few tens of metres apart from each other laterally, such as hummocky cross-stratification, wave-generated cross-bedding, parallel bedding, erosional surfaces, and graded bedding, which are considered characteristic of tempestites, are clearly present. Additionally, fining-upwards units and biogenic escape structures located at different levels of these sections indicate a similar origin. The vertical variations in layer thickness, grain size, and sedimentary structures in these sedimentary sections indicate fluctuating hydrodynamic conditions during deposition, while lateral decrease in the size and wavelength of the structures reflects deepening. This interpretation of storm-induced deposition is compatible with regional palaeoclimatological and palaeogeographical data, and is supported by evidence of Quaternary storm-induced sedimentation in adjacent lacustrine basins in the region.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 13
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 160

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