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Wyświetlanie 1-44 z 44
Tytuł:
Some Remarks on the Significance of Gold Based on Byzantine Ekphraseis of Works of Art
Autorzy:
Garnczarska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/1032079.pdf
Data publikacji:
2020-12-23
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Byzantine aesthetics
ekphrasis
gilding
mosaic
marble
Opis:
The abundance of gilding is considered to be a particularly characteristic feature of Byzantine art. This attribute can be confirmed by even a cursory analysis of works of art. In short, Byzantine artists used gold on a large scale, showing great technical skill. It is therefore quite surprising that this issue has not yet received a separate, comprehensive study. Admittedly, researchers recognize the presence of gold but unfortunately, they almost do not go beyond general observations. On the one hand, they emphasize the primary role of the symbolic meanings of gold, and, on the other, they indicate the high material value of this precious metal. These comments are usually very general and their authors rarely refer to specific primary sources. Their observations, however, speak more about present-day ideas about Byzantine culture than about it itself. The indicated problem is an important and extensive task to be done, hence this paper is only an outline of the most important questions, each of which requires a separate and in-depth study. Therefore, this synthetic article introduces the most basic points associated with the understanding of gold in Byzantium. For this purpose, selected examples of Byzantine texts in which their authors referred to gold in a strictly artistic context are analysed. Thus, the main thesis is as follows: in Byzantine painting, gold, one of the most important devices of artistic expression, was used on a large scale primarily for aesthetic reasons.
Źródło:
Studia Ceranea; 2020, 10; 83-121
2084-140X
2449-8378
Pojawia się w:
Studia Ceranea
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Precipitated calcium carbonate production, synthesis and properties
Autorzy:
Erdogan, N.
Eken, H. A.
Powiązania:
https://bibliotekanauki.pl/articles/110023.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
precipitated calcium carbonate
waste marble powder
whiteness
Opis:
Calcium carbonate (CaCO3) is the most widely used filler material in paper, paint, plastic, food, ceramic, cosmetic, medicine and other industries. In the present paper, precipitated calcium carbonate (PCC) has been produced from waste marble powder (WMP) by the Calcination-Dissolution-Precipitation (CDP) method. Calcination, dissolution and precipitation experiments were carried out under various conditions including : calcination temperature (800, 850, 900, 950 and 1000 °C), dissolution time (2.5, 5.0, 7.5 and 10.0 min) and precipitation time (2.5, 5.0, 7.5, 10.0, 12.5 and 15.0 min). Then, XRF, XRD, SEM, particle size, whiteness, brightness and yellowness analyses were performed for the characterization of the produced PCC materials. The analyses showed that the precipitate was mainly micrometer-sized (d50 = 1.682 μm) rhombohedral calcium carbonate crystals with 54.5% CaO. The whiteness, brightness and yellowness tests of the precipitates, conducted by Datacolor Elrepho 450x spectrometer, were determined to be 91.28, 98.2 and 1.99%, respectively. It was finally concluded that the produced PCC material reasonably meets Turkish Standards (TS 11653/1995) and can be used in paper industry.
Źródło:
Physicochemical Problems of Mineral Processing; 2017, 53, 1; 57-68
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of physical and mechanical properties of limestones used as marble in Tut-Adiyaman Region in Turkey
Autorzy:
Rizaoğlu, Tamer
Çoşkun, Canberk
Camuzcuoğlu, Murat
Powiązania:
https://bibliotekanauki.pl/articles/27324327.pdf
Data publikacji:
2022
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
natural stone
marble
limestone
physico-mechanical tests
Opis:
This study aimed to reveal the petrography and physical-mechanical properties of limestones, which have an important reserve and are used as marble, in Tut district of Adıyaman province, which is one of the important cities of southeast Anatolia. As a result of petrographic analysis of the rock known commercially as Emprador, it was determined that it is bioclastic limestone with abundant nummulite fossils. Density, dry and saturated unit weight, water absorption, surface roughness, abrasion resistance and uniaxial compressive strength tests were applied to determine the physical and mechanical properties of the limestones. According to the test results obtained, the density of the limestones, dry unit weight, saturated unit weight, water absorption by weight, water absorption by volume, average surface roughness, ten points roughness average, maximum roughness value, Bohme abrasion resistance and uniaxial compressive strength values were determined as 2.486 gr/cm3, 2.478 gr/cm3, 2.52 gr/cm3, 1.482%, 3.644%, 3.31 μm, 16.24 μm, 20.03 μm, 8.958 cm3/50cm2 and 1004.03 kgf/cm2 respectively. The results show that the limestones in and around Tut (Adıyaman) county can be used in large areas for decorative purposes, with their physical and mechanical properties, as well as their colour tone and the texture formed as a result of the calcite veins being shaped like a natural pattern.
Źródło:
Mining Machines; 2022, 40, 3; 141--148
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
IDENTYFIKACJA MARMURU UŻYTEGO W SARKOFAGU WŁADYSŁAWA JAGIEŁŁY W KATEDRZE WAWELSKIEJ
ORIGIN OF THE MARBLE OF THE TOMB OF KING JAGIELLO IN THE WAWEL CATHEDRAL IN KRAKOW
Autorzy:
Bromowicz, Jan
Magiera, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/537890.pdf
Data publikacji:
2006
Wydawca:
Narodowy Instytut Dziedzictwa
Tematy:
TOMB OF KING JAGIELLO (MARBLE ANALYSIS)
WAWEL CATHEDRAL
Opis:
In an attempt to identify the marble of the tomb of King Jagiello, three kinds of marbles were used as a refernce material, i.e.: Italian Ammonitico Rosso, Austrian Roter Knollenkalk and Hungarian red. Structure, texture and mineral composition were examined and SEM-EDAX analysis was done. Very limited size of the sample available disabled the use of the optical microscope. Generally, the tomb is made of red limestone with a nodular structure and sound, non porous texture. The nodules are 1 to 5 cm in diameter. This kind of a decorative limestone being succeptible to carving and polishing is traditionally called a 'marble'. Four varieties were identified in the tomb: Variety 1. Colour is red-brownish, nodules are slightly lighter than a matrix. Indistinct parallel bedding, stylolites and ammonites can also be seen. Variety 2. Generally, red-brownish in colouring, with stronger contrast between nodules (yellow-pinkish) and matrix (brown-reddish). Variety 3. Dark red-brownish. Nodules do not contrast strongly from the matrix. Variety 4. Colour is intermediate between varieties 1 and 2. Structure, texture and colour point to the Ammonitico Rosso marble as a stone applied in the tomb. Size, shape and colour of the nodules as well as colouring of the matrix make it similar to a variety that occurs in the vicinity of Verona and is called Rosso di Verona. Hungarian marbles obviously differ from that used in the tomb. Their colouring is generally darker and more brownish. Nodules are less pronounced and less contrasted from the matrix. SEM and SEM-EDAX analyses did not appear particularly diagnostic. The sample from the tomb was generally more fine grained than the reference samples thus disabling comparison of further structural and textural features. However, similarities were detected between the tomb marble and the Rosso di Verona marble, e.g. in the texture and number of genarations of the micrite, presence of clay minerals and iron oxides. Noticeable is a presence of Al, Si and K in the tomb marble, being apparently connected with clay minerals and with products of chemical weathering. All this point to the Rosso di Verona as the most probable stone applied in the tomb. Chemical composition of the marbles form the Verona area is following: Si - 5.90% CaO - 51.31% MgO - 0.14% CO2 - 40.48% Fe2O3 - 0.66 % FeO - traces Al2O3 - 0.84% Mn - traces Average porosity is less than 0.5%, and water sorption is less than 0.1% (W. D. Grimm, R. Snethlage, 1984).
Źródło:
Ochrona Zabytków; 2006, 3; 87-96
0029-8247
Pojawia się w:
Ochrona Zabytków
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Marble from Neolithic quarries at the Bílý Kámen Hill near Sázava (Central Bohemia, Czech Republic) and its petrographic-geochemical characterization
Autorzy:
Přichystal, Antonín
Burgert, Pavel
Gadas, Petr
Powiązania:
https://bibliotekanauki.pl/articles/2058626.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
prehistoric mining
marble
Neolithic
Bílý Kámen
Bohemia
petroarchaeology
Opis:
The longest known prehistoric quarries for non-siliceous (non-flint) rocks in continental Europe were discovered on the Bílý Kámen Hill in central Bohemia (Czech Republic) already in the period between the World Wars. Due to post-war events, this has been all but forgotten, and awareness of this important locality still exists only in the local research community. Its research potential has not yet been exhausted. The article presents the first exact mineralogical and geochemical characteristics of the raw material extracted in these prehistoric quarries. The raw material is fundamentally different from some of the marble artefacts from nearby workshops. The aim of this research is to create a solid foundation for the future detailed study of prehistoric artefacts made from marble and to review the deep-rooted idea of their distribution within the oldest agricultural communities in Central Europe.
Źródło:
Geological Quarterly; 2019, 63, 4; 811--821
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of flocculation behavior of marble powder suspensions
Autorzy:
Duzyol, S.
Powiązania:
https://bibliotekanauki.pl/articles/951841.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flocculation
marble powder
water soluble polymer
starch
turbidity
Opis:
In this study, flocculation of marble powder suspensions was investigated depending on a polymer type and dosage. Polyacrylamide was used as a synthetic polymer, while starch was used as a natural polymer. The effect of polyacrylamide type was also examined using anionic, cationic and non-ionic polyacrylamides. Flocculation of suspensions was ascertained by turbidity measurements. It was found that anionic and especially non-ionic polymers flocculated the marble powder suspension more strongly than starch and cationic polymer. On the other hand, it was observed that the sequential addition of starch and polymer did not improve flocculation of suspension. On contrary, sequential addition of flocculants caused re-dispersion of the flocculated suspension. When a non-ionic polymer was used as the flocculant, the reached minimum turbidity of suspension was measured to be 38 NTU (nephelometric turbidity unit).
Źródło:
Physicochemical Problems of Mineral Processing; 2015, 51, 1; 5-14
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reactivity of marble wastes for potential utilization in wet flue gas desulphurization
Autorzy:
Altun, N. E.
Powiązania:
https://bibliotekanauki.pl/articles/110132.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
marble
reactivity
thermal power production
SO2
desulphurization
Opis:
Wastes of most marble types are distinguished with their superior CaCO3 content and potential to utilize them as an alternative to limestone. Control of SO2 using marble wastes in wet flue gas desulphurization (WFGD) units of coal fired thermal power plants is an important opportunity. In this study, nine types of marble wastes were evaluated in terms of their ability to dissolution (reactivity) in an acidic environment. The reactivity was expressed as fractional conversion with time with respect to the chemical composition and particle distribution of wastes as well as temperature and pH of solution. Dissolution reaction rate constants were also computed. Reactivity of the wastes varied significantly with chemical compositions of the marble types. The same marble type displayed different dissolution profiles as a function of test conditions (fineness, temperature, pH). Higher contents of CaCO3 and Fe2O3 positively influenced dissolution ability and rates, whereas increased MgCO3 content had adverse effects. The changes in particle size, temperature and pH influenced the reactivity. The reactivity increased with decreasing particle size. Also, higher temperature and increased acidity favored dissolution ability of the marble wastes. Our results showed that under optimized conditions marble wastes, having a higher content of CaCO3 and low content of MgCO3, are potential SO2 sorbent alternative.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 1; 497-509
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on the shear creep characteristics of anchored jointed rock masses under creep fatigue loading
Autorzy:
Song, Yang
Li, Yong-Qi
Powiązania:
https://bibliotekanauki.pl/articles/2200837.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
disturbed load
sandstone
marble
creep body
rheological model
Opis:
To study creep characteristics of deep rock masses under low-frequency earthquakes and other loads, sandstone and marble samples were used to characterize soft rock and hard rock, respectively. Shear creep tests of anchored rock masses under fatigue loading were carried out by using the graded loading method. A new nonlinear rheological model was constructed to characterize mechanical properties of anchored rock masses under fatigue loading. Creep fatigue curves of soft rock and hard rock have clear creep characteristics including instantaneous, attenuation, steady-state and accelerated creep stages. This work provides new insights into the stability of rock masses.
Źródło:
Journal of Theoretical and Applied Mechanics; 2022, 60, 4; 625--635
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
“The thin delights of moonshine and romance”: Romance, Tourism, and Realism in Hawthorne’s <i>The Marble Faun</i>
Autorzy:
Martinez, Carlo
Powiązania:
https://bibliotekanauki.pl/articles/626172.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Nathaniel Hawthorne
Tourism
Italy
The Marble Faun
Romance
Realism
Opis:
Carlo MartinezUniversità “G. d’Annunzio” di Chieti-Pescara, Italy “The thin delights of moonshine and romance”: Romance, Tourism, and Realism in Hawthorne’s The Marble Faun Abstract: Hawthorne’s involvement with the logic of the tourism of his day is a key aspect of his development as a fiction writer. Starting from a discussion of the early sketch “My Visit to Niagara” the article argues that the discourse of tourism, with its protocols and practices, is for Hawthorne a fertile breeding ground and conceptual framework for the elaboration of a new rationale and a new aesthetic for the fiction writing he calls “romance.” It then explores how tourism resonates in the romance which takes it as its central thematic concern: The Marble Faun. Hawthorne’s last completed long work of fiction represents a moment of artistic and personal crisis for the author, who finds his notion of romance writing caught in a sort of double bind created by the touristic nature of his stay in Italy. As the plot of the novel suggests, in his efforts to extricate himself from the situation, Hawthorne, envisioned and experimented with a new kind of writing that led him to revise and alter radically the romance form he had previously elaborated in favor of a much more realistic style of fiction. Keywords: Nathaniel Hawthorne; Tourism; Italy; The Marble Faun; Romance; Realism
Źródło:
Review of International American Studies; 2018, 11, 2
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flexural characterization of polymer concrete comprising waste marble and date palm fibers
Autorzy:
Rokbi, Mansour
Rahmouni, Zine El Abidine
Baali, Brahim
Powiązania:
https://bibliotekanauki.pl/articles/298435.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
polymer concrete
date palm fibers
quartz
marble
fibers sizing
Opis:
Three-point bending. Abstract This work is an experimental approach for the development and characterization of a polymer concrete reinforced with natural fibers. The polymer concrete consists of sand (Quartz) and orthophthalic polyester used as a binder. Marble powder was used to ensure the continuity of the particle size of the granular mixture. As reinforcement, 2% of chopped date palm fibers (short, very short or mixed) were added. For comparison, identical polymer concrete flexure specimens reinforced with the same content of short E-glass fibers were also prepared and tested. All specimens were initially cured at room temperature and then post-cured for 6 h at 70°C. The results of three-point bending on smooth specimens with different rates of charges (marble), showed that the flexural and compressive strength were improved by adding 20% of marble, and were 31.80 MPa and 67.42 MPa respectively. The flexural strength of specimens showed that the improvement or the degradation of polymer concrete properties seemed to be attributed to the nature of fibers (treated or untreated), and/or to the fibers sizing (short, very short or mixed).
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2019, 22(2); 169-182
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jurassic red nodular limestone from NE Slovakia used as the Ľubovňa “marble” during the Renaissance in Slovakia and Poland
Autorzy:
Pivko, D.
Powiązania:
https://bibliotekanauki.pl/articles/2060362.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Ľubovňa “marble”
nodular limestone
Stará Ľubovňa
tombstone
Slovakia
Polska
Opis:
The Ľubovňa “marble” is red nodular limestone of Oxfordian to Tithonian age, which used to be extracted in several quarries near the town of Stará Ľubovňa in NE Slovakia. It replaced the Hungarian Gerecse “marble” which was extensively used in the Kingdom of Hungary and surrounding countries from the end of the 12th to the first third of the 16th century when its use was interrupted by the Turkish occupation of the area. The Ľubovňa “marble” was used as a substitution especially for Renaissance tombstones in today’s Slovakia and Poland and it was found also in Hungary. It reached the top of its popularity between the mid-16th and mid-17th century. To a smaller extent it was still used in the surrounding territories during the other styles in the 18th and 19th centuries. The “marble” production was probably affected by the political situation and wars. It is possible to distinguish the Ľubovňa “marble” from the Gerecse “marble” and the Adnet “marble” from Austria macroscopically on the basis of its distinct cleavage, and microscopically on the basis of microfacies with Saccocoma, Globuligerina and calcareous dinoflagellates. According to the stable isotopes of 18O and 13C, it is approximately similar to the Adnet “marble”.
Źródło:
Geological Quarterly; 2017, 61, 1; 53--61
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alexandria, Kom el-Dikka. Fieldwork in the 2019 season
Autorzy:
Majcherek, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1634063.pdf
Data publikacji:
2020-12-19
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Alexandria
lime kilns
Roman mosaic
ceramics
decorative marble
conservation
Opis:
The report offers an account of archaeological and conservation work carried out at the site. Excavations in the central part of the site (Sector F) were continued for the fourth season in a row. Exploration of remains of early Roman houses led to the discovery of a well preserved multicolored triclinium mosaic floor with a floral and geometric design. A large assemblage of fragments of polychrome marble floor tiles, recorded in the house collapse, showed the scale of importation of decorative stone material from various regions of the Mediterranean. Overlying the early Roman strata was direct evidence of intensive construction work carried out in the vicinity in the form of large-scale kilnworks, supplying lime most probably for the building of the late Roman bath and cistern. Included in the presentation is a brief review of the limited conservation work that was conducted in the complex of late antique auditoria.
Źródło:
Polish Archaeology in the Mediterranean; 2020, 29(2); 469-496
1234-5415
Pojawia się w:
Polish Archaeology in the Mediterranean
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From waste to treat waste : exploitation of marble dust as a harmful pollutant to a green adsorbent for dyes and heavy metals from industrial wastewater
Autorzy:
Attia, H.A.
Farghaly, Mohamed G.
Saleh, A.M.
Abdel Khalek, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/2175448.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
marble dust
pollutant
adsorbent
dye
heavy metals
textile wastewater
Opis:
The marble dust as a harmful industrial waste of marble fabrication was evaluated as aneconomical and efficient green adsorbent for Acid Red-1 dye and lead ions. The XRD, XRF, particle size, surface area and zeta-potential measurements were used to characterize the marble dust. The removal efficiency was optimized by studying several parameters such as pH, temperature, contact time, adsorbent dose and initial concentration. The optimum removal was achieved at pH 6, 20°C after 60 min in the presence of 2.5g/L marble dust. The rates of adsorption were found to follow the pseudo-second-order model. The results showed better fitting to Freundlich isotherm. The thermodynamic studies revealed that the adsorption process is spontaneous, exothermic and favorable at low temperature. The free energy (∆G°), enthalpy (∆H°), and entropy (∆S°) changes were calculated to predict the nature of adsorption.The removal efficiency was improved by calcination of the marble at 700°C. Application for textilewastewater showed high removal efficiency up to 99.9%of inorganic and organic pollutants. The product of treatment was used in the concrete and bricks manufactured, so there is nogeneration of second-order pollutants.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 154007
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dębnik and Paczółtowice “Marbles” in the architecture of Krakow
Autorzy:
Makowska, D.
Powiązania:
https://bibliotekanauki.pl/articles/89214.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
carboniferous limestone
Paczółtowice marble
Dębnik limestone
Polish onyx
Dębnik anticline
Opis:
In the architecture of Krakow we can find many stones which were quarried mostly from de-posits situated not far from the town. They gave a unique image of present, visible elements in the architecture. Many artists used a marble as the building and decorative stone, in sculptures and sepulchral art. Since XIVth century one of the most popular types of stone, which have been applied in the architecture of Krakow, is the Dębnik “marble”. After polishing, it has a deep black colour and, together with Paczółtowice “marble” has been given the fantastic complement of decorative elements in the monu-ments. In the Krakow we can find a lot of places where both “marbles” have been applied as a decorative elements in the architecture. These stones were forming the cultural heritage of Cracow. Usually they are used in sacred architecture. Dębnik and Paczółtowice “marbles” have been applied in many places, for example at the St Mary's Church and at the Wawel Cathedral, as well at Collegium Maius, St Adalbert’s Church in Market Square or at St Peter and Paul’ Church.
Źródło:
Mining Science; 2015, 22, Special Issue 2; 79-92
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indications of HP events in the volcanosedimentary succession of the Orlica–Śnieżnik Dome, NE Bohemian Massif: data from a marble-amphibolite interface
Autorzy:
Twyrdy, M.
Żelaźniewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/2060385.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
high-pressure episode
P-T path
marble-amphibolite association
Sudetes
Opis:
A volcanosedimentary succession of the Młynowiec-Stronie Group (MSG) in the Orlica–Śnieżnik Dome (OSD), the Sudetes, NE Bohemian Massif underwent multiple folding and shearing during the Variscan Orogeny. In the sheared domains, there are less deformed pods in which rocks preserve better records of metamorphic events prior to the regional temperature peak. In one such pod, near Gniewoszów on the western limb of the dome, marbles enclosed by massive amphibolites occur. In these rocks, zoned plagioclase with actinolite and epidote inclusions and zoned amphibole grains allowed recognition of three mineral assemblages and three P-T stages at: (1) 310°C/3–4 kbar, (2) 480–500°C/10.5 kbar, (3) 500–530°C/6–6.5 kbar, based on isopleth intersections and checked against conventional thermobarometry. These define a steep clockwise P-T path and a geothermal gradient of 17°C/km before peak conditions were attained, which suggests subduction of the metavolcano-sedimentary rocks (Stronie Formation of the MSG) on the western limb of the OSD, with a transient yet discrete higher pressure episode. Mineral relicts capable of demonstrating a higher pressure event are scarce in the supracrustal rocks of the dome, mainly because they became more thoroughly equilibrated and obliterated during the temperature peak at mid-amphibolite facies conditions and the subsequent ubiquitous greenschist facies overprint.
Źródło:
Geological Quarterly; 2017, 61, 2; 435--449
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technical issues of exploitation of marble used in the ancient times and nowadays in quarries of iscehisar in the massif of Afyon
Autorzy:
Ruszkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/134847.pdf
Data publikacji:
2016
Wydawca:
ADVSEO
Tematy:
technology of exploitation
quarries
marble
monolith
saw rope
Iscehisar quarries
Opis:
The purpose of this paper is to present the technical issues related to mining and quarrying of marble in Iscehisar quarris in Asia Minor
Źródło:
Technical Issues; 2016, 4; 83-88
2392-3954
Pojawia się w:
Technical Issues
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A combined hydrocyclone - electrocoagulation treatment for different types of industrial wastewater
Autorzy:
Farghaly, Mohamed G.
Attia, H.
Saleh, H. A.
Ramadan, A. M.
Abdel Khalek, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/1448028.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hydrocyclone
electrocoagulation
paper industry
iron industry
marble industry
granite industry
Opis:
Every year, a large amount of mineral processing wastewater is discharged from various industries into the environment which is considered a challenging task not only because of its large volume, but more importantly, its hazardous components, while its reuse as feedwater without proper treatments causes great harm to the final product of these industries. Cost-effective methods are required to treat a wide range of industrial wastewater in a diverse range of conditions. In this study, a combined hydrocyclone-electrocoagulation system is tried to treat the wastewater for industries with high water consumption and high pollutants such as paper industry, iron and metal forming industry, and marble industry. The effects of the hydrocyclone operational parameters, such as feed inlet pressure and diameter, vortex finder diameter, apex diameter, and feed solids content, were investigated. In the case, wastewater of paper industry, the following optimum conditions $(P = 4.5$ bar, $D_o = 15.8 mm, D_u = 6 mm, D_i = 4 mm and c_s = 2.3%)$ were achieved. An overflow of about 90.58% water recovery and 21.45% solid at 75.92% separation efficiency was obtained. The results showed that the hydrocycloneelectrocoagulation treatment has efficiently treated the three different types of industrial wastewater. The chemical oxygen demand (COD), biochemical oxygen demand (BOD), total solid (TS), total suspended solids (TSS), colour and turbidity, were reduced sharply and met the effluent discharge or reuse standards. Also, compared with the hydrocyclone-treated wastewater, the hydrocyloneelectrocoagulation-treated wastewater was found to be more enhanced.
Źródło:
Physicochemical Problems of Mineral Processing; 2021, 57, 2; 143-155
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ruin marble : a record of fracture-controlled fluid flow and precipitation
Autorzy:
Marko, F.
Pivko, D.
Hurai, V.
Powiązania:
https://bibliotekanauki.pl/articles/2058871.pdf
Data publikacji:
2003
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Western Carpathians
fluids
healed joints
Liesegang rings
ruin marble
banded structures
Opis:
The ruin marble structure of the Cretaceous/Paleogene fine-grained marly limestone from the Outer Flysch Belt of the Western Carpathians has a non-tectonic origin, according to structural and sedimentological evidence. Distinctive offsets of coloured red-brownish ferric oxyhydroxide bands are not due to displacements along rock-cutting fractures, as they superficially appear to be. Evidences for shear movement along these pseudo-faults were not observed. Band offsets result from different velocities of pervasively diffusing fluids, precipitating ferric oxyhydroxides in corridors bounded by sets of mineralised systematic joints. During rock weathering, calcite-filled joints operated as barriers for lateral fluid diffusion, but enabled longitudinal diffusion along healed joints. Simple laboratory experiments have been performed to simulate the formation of natural ruin marble structure.
Źródło:
Geological Quarterly; 2003, 47, 3; 241-252
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review: sustainable compressive strength properties of concrete mix with replacement by marble powder
Autorzy:
Sharma, N.
Singh Thakur, M.
Goel, P. L.
Sihag, P.
Powiązania:
https://bibliotekanauki.pl/articles/367956.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
marble powder
strength properties
cement
aggregates
proszek marmurowy
właściwości wytrzymałościowe
kruszywa
Opis:
Purpose: Over the years, various experiments have been performed to investigate the impact of marble powder within the concrete mixture. In the present study, a review has been done to check the persistence of marble dirt as the substitute for concrete constituents. Design/methodology/approach: Furthermore, the impact of marble powder as a replacement of cement and aggregates were reviewed. By reviewing previous studies, the result indicates that the use of waste marble powder in cement and aggregate was adequate to a certain range. Findings: By replacing cement with marble powder in a range between 5% to 10% by weight, it increases the compressive strength of concrete mix by 11.30% to 24.56%, compared to the nominal mix. According to the study, any further increase in the amount of marble powder in place of cement i.e, 12.5% to 20% replacement by weight, results in the reduction of compressive strength of concrete mix by 7.5% to 26.01%. Replacement of aggregates from 5% to 75% with marble powder increases the compressive strength of about 3.22% to 23.91% as compared to the nominal mix. Research limitations/implications: It was also concluded from the current study that, to obtain higher compressive strength, it is advantageous to replace fine aggregates with marble powder than the replacement of cement with the marble powder.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2020, 98, 1; 11-23
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Investigation on the Effect of Marble powder on the performance of Selt-Compacting Concrete (SCC)
Autorzy:
Djebri, N.
Rahmouni, Z. E.
Belagraa, L.
Powiązania:
https://bibliotekanauki.pl/articles/89192.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
self-compacting concrete
SCC
marble powder
MP
mechanical properties
rheological characteristics
environment
Opis:
The self-compacting concretes (SCC’s) are characterized by their high fluidity so that they could be placed without any vibration. The effect of fillers addition on the behavior of SCC in fresh and hardened state is of great importance. This incorporation of marble powder aims to preserve the environment and to widen its use in the future in SCC formulation. The present research experimental program examines the effect of the partial substitution of cement with marble powder on the characteristics of self-compacting concrete in fresh and hardened state. Thus, the marble powder (MP) was introduced into the composition of self-compacting concretes at dosages of 10%, 20% and 30%. Three water cement ratios (W/C) of 0.4, 0.5 and 0.6 were maintained for the studied mixtures. The reference one with 100% of cement served as a control concrete mix. Finally, it can be concluded that such valuation of the marble waste could be beneficial for self-compacted concrete formulation.
Źródło:
Mining Science; 2017, 24; 183-194
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Petrographic study of selected sculptural works of Jan Michałowicz from Urzędów
Autorzy:
Ciosmak, Małgorzata
Rzęsa, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/390071.pdf
Data publikacji:
2018
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
renaissance
Michałowicz
stone
sculpture
architecture
tombstone
petrography
analysis
rock
marble
alabaster
limestone
Opis:
Nowadays, in order to determine whether given rock properties make it useful for specifi c purposes, the material is examined using relevant test equipment. At the times of Jan Michałowicz, any knowledge in this respect was transmitted by the master to his apprentices, based on the master’s experience. The artist used domestic rock raw materials to sculpt monuments commemorating important persons who were his contemporaries. For the petrographic analysis, the authors selected the most distinguishable works of the artist, which he signed or which are most likely to have been sculpted by him. The authors analysed the materials used by the artist to carve specifi c elements of his works, as well as rock raw materials in terms of their historical and contemporary properties. Consequently, the petrographic study allowed to describe the rocks in greater detail, as well as their properties useful for sculpture purposes, and their durability. Artistic qualities helped determine the sources of stones used by Jan Michałowicz during his projects. These include the quarries near Pińczów (limestone), Kunów (sandstone), Bolechowice (marble), Żurawno (alabaster) and initially quarries in Hungary. The discussed works of Jan Michałowicz provide firm grounds for acknowledging the artist as the leading co-founder to Polish Renaissance art.
Źródło:
Budownictwo i Architektura; 2018, 17, 3; 201-218
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The study of the characteristics of sand concrete based on marble waste sand
Autorzy:
Bebhalilou, Mohamed Ichem
Belachia, Mouloud
Houari, Hacene
Abdelouahed, Assia
Powiązania:
https://bibliotekanauki.pl/articles/396631.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sand concrete
waste
marble
substitution
durability
performance
beton piaskowy
odpady
marmur
substytut
trwałość
Opis:
The present study aims to valorize the waste and in particular the waste from the Fil-fila quarry. The main reason for choosing the waste from this quarry was the need to reduce the impact on the environment (by reducing stockpiling) and the raw material cost (economic reason). This study therefore consists in recovering this type of waste (discarded powder subject to weather changes) as sand in partial replacement of dune sand in the formulation of sand concrete with percentages of 5, 10, 15 and 20 %, by studying the behavior of these concretes in the fresh state (workability, density and occluded air) and the properties in the hardened state (compressive and tensile strength by bending, absorption by immersion, shrinkage and weight loss, chemical effect of HCl and H2SO4 solutions), and subsequently comparing the results obtained with reference samples (0%) based on ordinary sand. Based on the obtained results, it can be concluded that the substitution of ordinary (dune) sand with marble waste sand provides acceptable results from the point of view of workability, strength and durability. These observations are likely to widen the field of applications of these sand concretes based on marble waste.
Źródło:
Civil and Environmental Engineering Reports; 2020, 30, 1; 130-144
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Szansa dla marmuru z Rogóżki ?
Opportunity for marble from Rogóżka?
Autorzy:
Szwed-Lorenz, J.
Ślusarczyk, S.
Powiązania:
https://bibliotekanauki.pl/articles/169850.pdf
Data publikacji:
2014
Wydawca:
Poltegor-Instytut Instytut Górnictwa Odkrywkowego
Tematy:
Dolny Śląsk
marmur
eksploatacja
zagospodarowanie wyrobisk
Lower Silesia
marble
exploitation
open cast development
Opis:
W artykule opisano historię eksploatacji i wykorzystania marmurów ze złoża Rogóżka leżącego w Kotlinie Kłodzkiej nieopodal Stronia Śląskiego. Scharakteryzowano jakość tych skał oraz obecny stan zagospodarowania obszaru złoża. Rozpatrzono możliwości i szanse jego ponownej eksploatacji lub innego sposobu zagospodarowania terenu nieczynnych wyrobisk dawnej kopalni.
This article tells about history of exploitation and use of marble from Rogóżka deposit situated in Kłodzka Valley nearby Stronie Śląskie.Specified the quality of these rocks and the current state of development of the deposit area. Examined the possibilities and opportunities of re-operation or different way of development of old mine 's inactive working areas.
Źródło:
Górnictwo Odkrywkowe; 2014, 55, 6; 29-33
0043-2075
Pojawia się w:
Górnictwo Odkrywkowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pulmonary alveolar proteinosis in a marble worker
Autorzy:
Yildirim, Berna Botan
Akgedik, Recep
Akgedik, Sukran
Nazaroglu, Hasan
Powiązania:
https://bibliotekanauki.pl/articles/2168356.pdf
Data publikacji:
2016-07-11
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
silica
occupational disease
bronchoalveolar lavage
pulmonary alveolar proteinosis
marble worker
rare lung disease
Opis:
Pulmonary alveolar proteinosis (PAP) is a rarely seen disease of the alveoli, characterized by accumulation of proteinous material, which stains positive with periodic acid Schiff, in the alveoli. Secondary PAP may develop as a result of occupational exposure to materials such as silica and indium. In the paper, together with a review of the relevant literature, we present an uncommon case of a 47-year old male, marble worker who was diagnosed with PAP associated with a 12-year history of exposure to marble dust. Int J Occup Med Environ Health 2016;29(5):871–876
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2016, 29, 5; 871-876
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shrinkage and Absorption of Sand Concrete Containing Marble Waste Powder
Autorzy:
Djebien, Rachid
Abbas, Yassine
Bouabaz, Amel
Ziada, Yasser Nacereddine
Powiązania:
https://bibliotekanauki.pl/articles/27314704.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sand concrete
marble powder
waste
shrinkage
absorption
kruszywo betonowe
proszek marmurowy
odpady
wchłanianie
Opis:
In the context of growing scarcity of natural resources, the high demand of aggregates and the difficulties to open new quarries, several studies were carried out to study the possibility of reuse of waste and industrial by-products to replace traditional materials which would run out, replace materials when transport distances increase to reduce construction costs and protect the environment. This experimental study aims to investigate the effect of marble waste used as powder on the shrinkage and absorption of sand concrete in order to reuse it in the production of sand concrete. To achieve this goal, several sand concrete mixtures containing different substitutions rates of marble powder (4, 8 and 12%), and different Water / Cement ratio (0.71, 0.74, 0.77) were produced. Then, the evolution of the shrinkage and absorption values of sand concrete mixtures was studied. The obtained results showed that marble waste powder plays a positive role in reducing of shrinkage and absorption values of sand concrete and lead to the production of eco-friendly sand concrete.
Źródło:
Civil and Environmental Engineering Reports; 2022, 32, 1; 240--254
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sztuczne marmury z gipsu
Artificial marbles from gypsum
Autorzy:
Urban, J.
Powiązania:
https://bibliotekanauki.pl/articles/392502.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
Tematy:
marmur sztuczny
spoiwo gipsowe
receptura
wyniki badań
artificial marble
gypsum binder
composition
test results
Opis:
Rosnące zainteresowanie rynku budowlanego wyrobami marmuropodobnymi było impulsem do podjęcia w Zakładzie Gipsu i Chemii Budowlanej Instytutu Szkła, Ceramiki, Materiałów Ogniotrwałych i Budowlanych prac badawczych nad opracowaniem technologii wytwarzania elementów dekoracyjnych z gipsu, imitujących marmury naturalne. W artykule przedstawiono wyniki badań otrzymanego tworzywa gipsowego, w którym szczególny nacisk położono na wytrzymałość i odporność na działania wpływów atmosferycznych.
Increasing interest of building market in marble-like products was a cause for starting a research work in Gypsum and Building Chemie Division of ISCMOiB on technology of manufacturing from gypsum decorative elements imitating natural marbles. In the paper results of investigation of obtained gypsum material are presented with a special emphasis on their strength and weather-proofness.
Źródło:
Prace Instytutu Szkła, Ceramiki, Materiałów Ogniotrwałych i Budowlanych; 2009, R. 2, nr 4, 4; 203-214
1899-3230
Pojawia się w:
Prace Instytutu Szkła, Ceramiki, Materiałów Ogniotrwałych i Budowlanych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removing Heavy Metals through Different Types of Soils and Marble Powder found in Oman
Autorzy:
Wazwaz, Aref
Al-Salaymeh, Ahmed
Khan, Mohd Shariq
Powiązania:
https://bibliotekanauki.pl/articles/124676.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
adsorption
potable water
silty soil
sandy soil
clay soil
marble powder
heavy metals removal
Opis:
In this research, adsorption followed by filtration was used for removing heavy metals (Cu, Zn, Mn, and Cr) from the polluted water. Three types of soils (silty, sandy and clay) and three types of marble powder (pure, impure, marble-granite mix) were used as an adsorbent. The soil and marble samples were collected from different regions of Oman. The maximum adsorption obtained was 96.01% for Zn using pure marble powder and the minimum adsorption obtained was 6.70% for Mn using impure marble powder. Through different soils, the maximum adsorption of 88.61% was achieved for Zn using clay and the lowest one is for Cr 16.51% using silty soil. The results suggest that among the marble powders, the pure ones show the maximum (96.01% for Zn) and marble-granite show the minimum (Mn 6.70%) adsorption performance. Among the adsorbents, Zn is the best adsorbate (96.01%) while the worst among the group is Mn, which merely adsorbed 6.70% with the selected adsorbents.
Źródło:
Journal of Ecological Engineering; 2019, 20, 4; 136-142
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Inscription of Tiberius Claudius Claudianus Hetereianus Engraved on a Marble Column Found in the ‘Saranda Kolones’ Castle at Nea Paphos, Cyprus
Autorzy:
Kordas, Anna Urszula
Powiązania:
https://bibliotekanauki.pl/articles/2180005.pdf
Data publikacji:
2022-12-31
Wydawca:
Polska Akademia Nauk. Instytut Kultur Śródziemnomorskich i Orientalnych PAN
Tematy:
Cyprus
Nea Paphos
Greek inscription
marble column
Roman citizens in Cyprus
equites
ordo equester
Opis:
This paper offers the editio princeps of a Greek inscription engraved on a marble column discovered in the ‘Saranda Kolones’ Castle at Nea Paphos in Cyprus. The inscription, dated to the second or early third century AD, contains the names of the otherwise unknown Tiberius Claudius Claudianus Hetereianus, a member of the ordo equester, a founder of the column. This is the only known inscription mentioning the name Hetereianus. It remains an open question as to whether the man mentioned by the inscription was a Cypriot by birth or came to Cyprus, as well as whether he was the founder of this column only or a whole colonnade.
Źródło:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences); 2022, 35; 59-74
2084-6762
2449-9579
Pojawia się w:
Études et Travaux (Institut des Cultures Méditerranéennes et Orientales de l’Académie Polonaise des Sciences)
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
USING EDUCATIONAL MARBLE GAMES IN GERMAN LANGUAGE TEACHING
Autorzy:
COŞKUN, HASAN
Powiązania:
https://bibliotekanauki.pl/articles/628440.pdf
Data publikacji:
2015
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
kitchen appliances, teaching German as a foreign language, educational marble game, exercise types, implementation
Opis:
The aim of this article is to show how German students can be motivated by learning games. Apart from the development and didacticisation of the learning game “Marbles”, the attitude of  Turkish families and language teaching educational establishments and the support of the DaF lessons by German mediating institutions in Turkey will be considered. The attitude of Turkish families to learning foreign languages is mostly positive. Turkish educational authorities and those responsible for education take various measures to expand foreign language teaching availability in the schools. German institutions which provide teachers (Goethe-Institut, ZfA, DAAD) promote the improvement of German teaching in Turkey. Nevertheless, the quality of German teaching is not satisfactory mostly because the available teachers are not adequately qualified, teacher training is remote from practice, the quality of text books and teaching materials, the traditions of learning, the excessively large classes, inadequate learning environment (language cabinets and equipment), the nature and method of central examinations (multiple choice) and their significance in the Turkish educational system. In the long-term, this leads to frustration in both teachers and students. The Turkish educational authorities initially took measures to expand the availability of language teaching in the course of harmonisation of the Turkish educational system to that of the EU e.g. the introduction of a second foreign language. German mediating institutions ensure reasonable further training for teachers locally and in Germany and support the creation of teaching materials etc. The Ministry of Education in Turkey, has started to take measures for students to learn other languages such as German, French, Russian, Spanish, Japanese, Italian, Arabic, ethnic languages in Turkey, et cetera in the educational institutions in addition to English. For example, in the Anatolian high schools two foreign languages are taught.  The Board for Higher Education in Turkey, has introduced second foreign language lessons in  foreign language teacher programs, envisioned to be taken for three semesters, in order for the language teachers to gain experience in the field of two languages.  Private education institutes are emphasizing that they are teaching more than one foreign language in order to draw more students. Families make an economic sacrifice for their children in order for them to learn foreign languages. It is observed that in some districts of certain major cities, teaching of foreign languages has started to be given as early as at kindergarten level. In Turkey, German is preferred as the second foreign language in general. Nowadays, German is the second preferred language from primary to high school in Turkey. The quality of German language lessons should be increased for more students to select German as the second foreign language in the coming years. Despite all these efforts, teaching foreign language is not up to the desired level in Turkey (Bayraktaroğlu, 2014, pp. 9-14; Demircan, 2014, pp. 17-22). For that reason, it is important that motivating teaching methods and teaching materials be developed for German teaching.
Źródło:
Journal of Education Culture and Society; 2015, 6, 1; 167-184
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Recycled Tire Rubber and Marble Waste on Fresh and Hardened Properties of Concrete
Autorzy:
Djebien, Rachid
Bouabaz, Amel
Abbas, Yassine
Powiązania:
https://bibliotekanauki.pl/articles/27314703.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
recycling tire rubber
marble waste
green concrete
properties
odpady gumowe
odpady marmurowe
recykling
beton
Opis:
This paper investigates the effect of simultaneous adding of recycled tire rubber (RTR) and marble waste (MW) as fine aggregates on the properties of concrete. To achieve this objective, the particles size distribution of crushed sand (CS) was corrected by the use of marble waste sand (MWS), and RTR was used by volumetric substitution (1%, 2%, 3% and 4%) of aggregates in concrete. The fresh properties were investigated using the slump, density and air content tests. Hardened properties were investigated through the compressive strength, flexural strengths, pulse velocity, elastic modulus and water absorption. The obtained results showed that the increase in the substitution rate of RTR reduced the fresh and hardened properties of concrete containing marble waste sand. However, with low substitution rates the properties of concrete remain satisfactory and the utilization of RTR and MWS leads to making a green concrete while protecting the environment.
Źródło:
Civil and Environmental Engineering Reports; 2022, 32, 1; 218--239
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of marble dust and glass fiber on expansive soil
Wpływ pyłu marmurowego i włókna szklanego na ekspansywną glebę
Autorzy:
Shukla, Rajesh P.
Algotari, Divyanshu
Rathod, Mahendrasinh
Powiązania:
https://bibliotekanauki.pl/articles/1841469.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
compressive strength
reinforcement
fibers
marble dust
stabilization
depozycja na czynniki atmosferyczne
huta miedzi
emisje
metale
Opis:
India shares a significant production of glass fiber and marble wastes in the world, which poses a big disposal problem. This study assesses the suitability of glass fiber and marble dust to enhance the behaviour of expansive soil. The Atterberg’s limits and plasticity index improves by mixing marble dust into the soil. Whereas, the effect of glass fiber on the Atterberg’s limit is not very encouraging. The shear strength increases with the addition of marble dust as well as glass fibers. The effect of glass fiber on strains corresponding to peak stress is significantly higher than the marble dust. The strength of fiber-reinforced soil initially increases with the addition of marble dust, to a certain extent, beyond which it decreases. The effect of marble dust on variation in peak stress and corresponding strains is that fiber-reinforced soil is almost the opposite. The optimum quantity of marble dust and glass fiber is found to be 10%-15% and 3%, respectively.
Gleby ekspansywne to gleby, które mają zdolność kurczenia się i / lub pęcznienia, a tym samym zmiany objętości, w zależności od zmian wilgotności. Utylizacja odpadów przemysłowych to duży problem w Indiach. Obecnie wiele produktów odpadowych stało się popularnymi materiałami konstrukcyjnymi. W niniejszej pracy oceniano przydatność zbrojenia włóknem szklanym do poprawy wytrzymałości gruntu ekspansywnego. Ponadto określa się również wpływ pyłu marmurowego na grunt wzmocniony włóknami. Limity Atterberga i wskaźnik plastyczności poprawiają się poprzez mieszanie pyłu marmurowego z glebą. Natomiast wpływ włókna szklanego na granicę Atterberga nie jest zachęcający. Wytrzymałość na ścinanie wzrasta wraz z dodatkiem pyłu marmurowego oraz włókien szklanych. Jednak wpływ włókna szklanego jest relatywnie bardziej zauważalny w porównaniu z pyłem marmurowym. Stwierdzono, że optymalna ilość pyłu marmurowego i włókna szklanego wynosi odpowiednio 15% i 3%. W przypadku włókna szklanego wytrzymałość na ściskanie i odpowiednie odkształcenie wzrastają odpowiednio o 55–58% i 700%. W gruncie zbrojonym włóknem wytrzymałość początkowo wzrasta wraz z dodatkiem pyłu marmurowego, do pewnego stopnia, po przekroczeniu której maleje. Stwierdzono, że wpływ pyłu marmurowego na zmienność szczytowych naprężeń i odpowiadających im odkształceń gleby wzmocnionej włóknami jest prawie przeciwny.
Źródło:
Inżynieria Mineralna; 2020, 2, 2; 111-118
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface Characterization of Oleic Acid Coated Marble Dust
Charakterystyka powierzchni pyłu marmurowego pokrytego kwasem oleinowym
Autorzy:
Polat, Ercan
Guler, Taki
Celep, Oktay
Akturk, Selçuk
Powiązania:
https://bibliotekanauki.pl/articles/318754.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
surface modification
oleic acid
marble waste
micronized calcite
modyfikacja powierzchni
kwas olejowy
odpady marmurowe
mikronizowany kalcyt
Opis:
Calcite, being the most abundant mineral on earth crust, have wide application areas especially in polymer industry as a micronized functional filler material. It is hydrophilic in natural form, and made hydrophobic after surface modification to meet the requirements of polymer industry: the incompatibility between high energetic hydrophilic surface of calcite and the low-energy surface of hydrophobic polymers is a major problem. Treatment of micronized calcite with fatty acids is one of the most common method to obtain modified mineral surface. In present study, oleic acid (OA), fatty acid type surface modifying agent was used for the surface characterization of OA coated marble dust. Fine tailings of slab cutting unit of a marble processing plant was supplied. The sample was subjected to wet classification process to obtain micronized calcite fraction for experimental works. Surface modification of finely sized fraction was performed in a laboratory type flotation unit. Thermogravimetric analysis (TGA) and Transmission Electron Microscopy (TEM) were used as characterization techniques.
Kalcyt, będący najczęściej występującym minerałem w skorupie ziemskiej, ma szerokie obszary zastosowań, szczególnie w przemyśle polimerowym, jako mikronizowany funkcjonalny materiał wypełniający. Jest hydrofilowy w naturalnej postaci, a po modyfikacji powierzchni stał się hydrofobowy, aby spełnić wymagania przemysłu polimerów: niekompatybilność między wysokoenergetyczną hydrofilową powierzchnią kalcytu a niskoenergetyczną powierzchnią hydrofobowych polimerów jest poważnym problemem. Obróbka mikronizowanego kalcytu kwasami tłuszczowymi jest jedną z najczęstszych metod uzyskiwania modyfikowanej powierzchni mineralnej. W niniejszym badaniu do charakteryzowania powierzchni pyłu marmurowego pokrytego OA - kwasem oleinowym (OA), jako środek modyfikujący powierzchnię użyto kwasu tłuszczowego. Do badań wykorzystano drobne odpady z urządzenia do cięcia płyt w zakładzie przeróbki marmuru. Próbkę poddano procesowi mokrej klasyfikacji w celu uzyskania mikronizowanej frakcji kalcytu do prac eksperymentalnych. Modyfikację powierzchni frakcji drobnej wielkości przeprowadzono w laboratoryjnej jednostce flotacyjnej. Jako do scharakteryzowana próbek zastosowano analizę termograwimetryczną (TGA) i transmisyjną mikroskopię elektronową (TEM).
Źródło:
Inżynieria Mineralna; 2020, 1, 1; 125-129
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Eksploatacja podziemna kamieni blocznych - podstawowe aspekty geologiczne i górnicze
Underground extraction of dimension stone — basic geological and mining aspects
Autorzy:
Galos, K.
Guzik, K.
Powiązania:
https://bibliotekanauki.pl/articles/395119.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
eksploatacja podziemna
kamienie bloczne
marmury
wapienie
systemy eksploatacji
underground extraction
dimension stone
limestone
marble
mining systems
Opis:
Podziemna eksploatacja kamieni blocznych jest rozpowszechniona w wielu krajach europejskich, a także w Ameryce Północnej. Jej popularność będzie jednak niewątpliwie rosnąć, przede wszystkim w związku z uwarunkowaniami środowiskowymi i kwestią dostępności terenu. Metoda ta zapewnia często długoletnią działalność górniczą, umożliwiając eksploatację tylko wybranych partii masywu skalnego, bez konieczności usuwania nadmiernego nadkładu, przy zredukowanym do minimum wpływie na powierzchnię terenu oraz niższych kosztach rekultywacji w porównaniu do eksploatacji odkrywkowej. Eksploatacja podziemna w chwili obecnej dotyczy niemal wyłącznie skał osadowych (głównie wapienie) oraz niektórych metamorficznych (np. marmury). Najbardziej znane przykłady podziemnej eksploatacji kamieni budowlanych występują we Włoszech, a także w Wielkiej Brytanii, Portugalii i kilku innych krajach Europy południowej. Najczęstszą przyczyną uruchamiania eksploatacji podziemnej skał blocznych jest występowanie zapotrzebowania na materiały kamienne, których wydobycie metodą odkrywkową jest utrudnione bądź niemożliwe. Istotnym aspektem eksploatacji podziemnej musi być gwarantowana długoterminowa stabilność geomechaniczna pustek poeksploatacyjnych. Warunki geostrukturalne (tektonika, litologia) determinują zarówno plan wyrobisk podziemnych, jak też metody pozyskiwania bloków w przodkach eksploatacyjnych. Najczęstszym stosowanym systemem eksploatacji podziemnej jest system komorowo-filarowy. Istotna jest także możliwość prowadzenia eksploatacji wybranych części złóż, charakteryzujących się najkorzystniejszymi parametrami jakościowymi. Za podjęciem podziemnej eksploatacji przemawia również stwierdzany wielokrotnie wzrost możliwości pozyskania bloków w głębiej położonych partiach złóż. Powoduje to, że uzysk bloków w kopalniach podziemnych jest rzadko mniejszy niż 60%. W Polsce podziemna eksploatacja krajowych skał blocznych nie była dotychczas prowadzona. Najbardziej interesujące perspektywy rozwoju eksploatacji metodą podziemną mogą dotyczyć m.in. marmurów, serpentynitów i sjenitów na Dolnym Śląsku oraz wapieni (marmurów technicznych) w rejonie Krakowa i Kielc.
Underground extraction of dimension stone is widespread in many European countries and in North America. Its popularity will undoubtedly grow, mainly due to environmental considerations and the accessibility of deposits for extraction. This method commonly results in long-term mining operations, allowing for the extraction of only selected parts of the rock mass without the necessity of overburden removal, reduced impact on the surface environment, and lower costs of reclamation as compared to open pit mining. Currently, underground mining is almost entirely associated with sedimentary rocks (mainly limestone) and some metamorphic rocks (e.g. marble). The best-known examples of underground exploitation of building stones are found in Italy, the UK, Portugal, and several other countries in southern Europe. The most common reason for initiating underground dimension stone mining is demand for certain stone materials which cannot be obtained from opencast mining. An important aspect of such operations is guaranteed long-term geomechanical stability of post-mining voids. Geostructural conditions (tectonics, lithology) determine both the plan of underground workings, as well as the method of blocks at the mining faces. The room-and-pillar system is the most common operating system of extraction. It is important to have the opportunity for selective mining of the parts of a deposit showing the best quality parameters, which allows for higher yield of the blocks (rarely less than 60%). In Poland, the underground extraction of dimension stone has not yet been conducted. The most interesting prospects for the development of an underground operation method may include — among other materials — marble, serpentinite, and syenite in Lower Silesia and limestone (technical marble) in the area of Cracow and Kielce.
Źródło:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2013, 84; 25-36
2080-0819
Pojawia się w:
Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Petrograficzne uwarunkowania zmienności mechanicznych właściwości niejednorodnego strukturalnie marmuru kalcytowego
Petrographic constraints on the mechanical properties of a structurally heterogenous calcite marble
Autorzy:
Rembiś, Marek
Kośla, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2074301.pdf
Data publikacji:
2022
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
marmur Fior di Pesco Carnico
analiza petrograficzna AGA
Adjacent Grain Analysis
ugięcie
marble Fior di Pesco Carnico
bowing
Opis:
Due to its exceptional ornamental properties, the marble Fior di Pesco Carnico (FDP marble) is a common decorative stone applied to external and internal building elevations. The rock is characterized by a considerable structural and textural variability; however, this feature pertains only to a minor degree to its directional arrangement of anisotropy planes (i.e. lamination) being usually dependent on the non-uniform, spatial distribution of rock mineral components or some textural elements, mainly veins. As a result, the utilitarian properties of the FDP marble varies dependingon therockzone. Petrographic AGA(Adjacent Grain Analysis) investigations were carried out on samples representing various fragments of a marble slab and essential mechanical parameters of the rock were determined. It has been established thatthe FDP marble is deformable asaresultof temperature changes (bowing) and that this feature can be explained to asignificant degree by the type ofcontacts between calcite blasts (AGA = 6). Other highly variable marble properties include the flexural strength under the concentrated load and the breaking load at dowel hole in different places of a marble plate. It has also been shown that applying to computational project works lower values of the expected mechanical rock parameters instead of their mean values has a ensible justification, as to a large extent it secures a higher exploitation safety of the marble to be used within a building object.
Źródło:
Przegląd Geologiczny; 2022, 70, 2; 116--125
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Flavian Officina Lapidaria Tarraconense: colour and texture in the service of Rome
Autorzy:
Gorostidi Pi, Diana
Ruiz Rodríguez, Julio César
Powiązania:
https://bibliotekanauki.pl/articles/16220147.pdf
Data publikacji:
2017-12-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Tarraco,
officinae lapidariae
tripartite pedestal
marmor of Tarraco
Lunense marble
provincial flamines
Vespasian
imperial cult
public architecture
monumental epigraphy
Opis:
We present a reflection on the workshops charged with shaping the public image of Flavian Tarraco through its epigraphic monuments. For this purpose, we undertooka detailed analysis of the materials and media used to decorate the areas of representation of the Concilium Provinciae, established at the beginning of Vespasian’s reign, contrasting them with the epigraphic production of the preceding periods. The study is compared to other archaeological relics from the same area.  
Źródło:
Studia Europaea Gnesnensia; 2017, 16; 319-352
2082-5951
Pojawia się w:
Studia Europaea Gnesnensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical response of notched marble beams under bending versus acoustic emissions and electric activity
Autorzy:
Kourkoulis, S. K.
Pasiou, E. D.
Dakanali, I.
Stavrakas, I.
Triantis, D.
Powiązania:
https://bibliotekanauki.pl/articles/281055.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
marble
monuments
notch mouth opening displacement
three-point bending
pressure stimulated currents
acoustic emissions
3D-digital image correlation
Opis:
An experimental protocol, including the combined application of both innovative and traditional sensing techniques, is described aiming to explore the mechanical response of marble and also to check the possibilities of detecting precursor phenomena designating upcoming catastrophic fracture. The protocol consisted of three-point bending tests with notched prismatic beams made of Dionysos marble, the material extensively used for restoration of the Acropolis of Athens monuments. The sensing system improvised included techniques relying on completely different physical foundations, which permit simultaneous detection and recording of the Pressure Stimulated Currents, Acoustic Emissions, three dimensional displacement fields and Notch Mouth Opening Displacements. Analysis of the results revealed interesting features of the mechanical response of Dionysos marble and indicated, also, that classical Continuum Fracture Mechanics fails to describe accurately the response of marble, at least in the presence of notches. In addition, strong correlations between the Pressure Stimulated Currents, the rate of acoustic hits and the rate of change of the opening of the pre-existing notch have been enlightened. Moreover, the onset of catastrophic crack propagation appears following distinguishable changes of the Pressure Stimulated Currents recorded. Therefore (and taking into account the very small size of the respective sensors as well as the simple complementary equipment needed), it is concluded that the specific technique could be considered as a simple and reliable tool for an alternative approach to the in-situ Structural Health Monitoring of classical stone monuments.
Źródło:
Journal of Theoretical and Applied Mechanics; 2018, 56, 2; 523-547
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New multituberculate-like teeth from the Middle Jurassic of England
Nowe zeby ssakow ze srodkowej jury Anglii
Autorzy:
Kermack, K A
Kermack, D M
Lees, P M
Mills, J R E
Powiązania:
https://bibliotekanauki.pl/articles/22603.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
fauna kopalna
Eleutherodon oxfordensis
zeby
Allotheria
ssaki
jura
baton
Eleutherodontida
Haramiyidae
osady Forest Marble
paleontologia
Anglia
haramiyidy
wieloguzkowce
Eleutherodontidae
Kirtlington
Opis:
New fossil mammal teeth are described from the Middle Jurassic (Bathonian) Forest Marble of Kirtlington, Oxfordshire, England. They are referred to a new genus and species, Eleutherodon oxfordensis, family Eleutherodontidae nov., suborder Eleutherodontida nov., order incertae sedis, assigned to Allotheria Marsh, 1880. These teeth are unique, but share with multituberculates and haramiyids the longitudinal arrangement of their cusps and with the former at least the propalinal action of the jaws in chewing, and palinal movement of the dentary during the power stroke. They differ in that respect from the Greenlandic Late Triassic Haramiyavia clemmenseni in which an orthal movement is predominant.
W pracy opisano kolekcję pojedynczych zębów ssaków ze środkowej jury (batonu) Anglii. Kolekcja pochodzi z osadów znanych jako Forest Marble, występujących w Kirtlington, w Oxfordshire. Wszystkie zęby zaliczono do nowego gatunku i rodzaju Eleutherodon oxfordensis, dla którego utworzono nową rodzinę Eleutherodontidae i nowy podrząd Eleutherodontida. Podrząd ten, zaliczony do rzędu incertae sedis umieszczono w podgromadzie Allotheria, do której zalicza się też wieloguzkowce (Multituberculata). Nowe zęby mają unikalną budowę, ale łączy je z wieloguzkowcami i haramiyidami ułożenie guzków w podłużne rzędy, a z wieloguzkowcami ponadto ruch żuchwy ku tyłowi podczas żucia (palinalny). Pod tym względem różnią się one od triasowej Haramiyavia clemmenseni (zaliczonej do haramiyidów) z Grenlandii, u której zrekonstruowano pionowe ruchy żuchwy podczas żucia.
Źródło:
Acta Palaeontologica Polonica; 1998, 43, 4; 581-606
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inwentarz marmurów z krakowskiego warsztatu Sebastiana Sali z 1653 r. Kilka uwag na temat biografii rzeźbiarza i jego ostatnich zamówień
Marble Inventory of Sebastian Sala’s Cracow Workshop from 1653. Remarks on the Sculptor’s Biography and His Last Commissions
Autorzy:
Janowski, Piotr Józef
Powiązania:
https://bibliotekanauki.pl/articles/15582264.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Sztuki PAN
Tematy:
Inwentarz
czarne „marmury”
warsztat rzeźbiarski
Sebastian Sala
Maciej Łubieński
Stefan Koryciński
Kraków
Gniezno
Klimontów
Sandomierz
Inventory
black ‘marble’
sculpture’s workshop
Cracow
Opis:
Na podstawie nieznanego dotąd inwentarza marmurów znajdujących się w warsztacie rzeźbiarskim Sebastiana Sali oraz dodatkowych źródeł uzupełniono wiedzę na temat jego biografii i działalności artystycznej. Wskazano lokalizację mieszczącej się w północno-zachodnim międzymurzu przy bramie Sławkowskiej w Krakowie pracowni mistrza oraz omówiono profil jej działalności. Artyście przypisano zespół czarno-marmurowych portali z kościoła kolegiackiego pw. św. Józefa w Klimontowie oraz wczesnobarokowy portal z kościoła katedralnego pw. Narodzenia Najświętszej Marii Panny w Sandomierzu. Ponadto wskazano, że niedługo przed śmiercią Sebastiana Sala realizował zamówienie dla prymasa Marcina Łubieńskiego, najprawdopodobniej na wykonanie jego nagrobka do katedry w Gnieźnie. Potwierdzono także przyjęcie przez artystę zlecenia od marszałka koronnego Stefana Korycińskiego, które można wiązać z ostatecznie niezrealizowanym projektem dekoracji rzeźbiarskiej kaplicy przy kościele pw. św. Szczepana w Krakowie.
Based on the previously unknown inventory of marbles found in the sculpture workshop of Sebastian Sala and additional sources the knowledge of his biography and artistic activity has been complemented. The location of Sala’s workshop in the north-western Zwinger by Cracow’s Sławkowska Gate has been ascertained, and the profile of his output has been discussed. The artist has been attributed a pair of black-marble portals from the Collegiate Church of St Joseph in Klimontów and the early-Baroque portal from the Cathedral Church of the Nativity of the Blessed Virgin Mary in Sandomierz. Furthermore, it has been demonstrated that not long before his death Sebastian Sala was executing a commission for Primate Marcin Łubieński, most likely working on his tomb for the Gniezno Cathedral. Also, it has been confirmed that the artist received a commission from Crown Marshal Stefan Koryciński, which can be associated with Koryciński’s plan, finally unaccomplished, to provide sculptural décor to the chapel by the Church of St Stephen in Cracow.
Źródło:
Biuletyn Historii Sztuki; 2022, 84, 2; 311-337
0006-3967
2719-4612
Pojawia się w:
Biuletyn Historii Sztuki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study on the dynamic tensile mechanical properties of marble under water and oil conditions
Autorzy:
Li, Chaoxin
Liu, Dongyan
Zhu, Yunhui
Powiązania:
https://bibliotekanauki.pl/articles/27312136.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
rozciąganie dynamiczne
pręt Hopkinsona
rozpraszanie energii
symulacja numeryczna
marmur
woda
olej
dynamic tensile
Hopkinson bar
energy dissipation
numerical simulation
marble
water
oil
Opis:
To investigate the dynamic tensile properties and energy dissipation characteristics of marble in three different conditions: dry, water-saturated, and oil-saturated, a Brazilian disk splitting test was conducted using a 50 mm diameter Hopkinson pressure bar (SHPB) device. The findings indicate that the peak strain and dynamic tensile strength of the three conditions increase with strain rate, exhibiting a clear strain rate effect. Additionally, lubricating effects of water and oil weaken internal shear sliding friction, thus promoting crack expansion. Furthermore, immersion of fluid in marble weakens the cementation of internal mineral particles, leading to lower tensile strength of marble saturated with water and oil compared to dry marble under dynamic impact. When analyzing the energy dissipation of marble, both the absorption energy and dissipation energy density increase with oil strain rate, indicating a positive correlation. Moreover, numerical results obtained from ANSYS/LS-DYNA correspond well with experimental data, thus verifying and interpreting the experimental outcomes.
Źródło:
Archives of Civil Engineering; 2023, 69, 3; 317--330
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The stonemasonry centre in Dębnik under the management of the discalced Carmelites in Czerna
Ośrodek kamieniarski w Dębniku pod zarządem karmelitów bosych w Czernej
Autorzy:
Skrabski, Józef
Powiązania:
https://bibliotekanauki.pl/articles/560393.pdf
Data publikacji:
2016-12-31
Wydawca:
Uniwersytet Papieski Jana Pawła II w Krakowie
Tematy:
Dębnik
the Order of the Discalced Carmelites
masonry
marble from Dębnik
small architecture
sculpture
baroque
zakon karmelitów bosych
kamieniarstwo
marmur dębnicki
mała architektura
rzeźba
barok
Opis:
One of the most famous centers of stonemasons’ settlement in Poland is located in a small village Dębnik near Krakow, which from 1628 years belonged to the Monastery of the Discalced Carmelites in Czerna. Carmelites dealt with the administration, leasing stone mines, obtaining stonmasons and acquiring customers. The text examines the history of the stonemasons’ settlement under the management of the Discalced Carmelites from the beginning of the seventeenth century until 1953, the administration of craft workshops, management and relations between religious and stonemasons in different historical periods.
Jeden z najsłynniejszych ośrodków kamieniarskich w Polsce jest położny w niewielkiej osadzie Dębnik niedaleko Krakowa, która od 1628 roku należała do klasztoru karmelitów bosych w Czernej. Karmelici zajmowali się administracją, dzierżawą łomów kamieniarskich, pozyskiwaniem kamieniarzy oraz zleceniodawców. W tekście omówiono dzieje osady kamieniarskiej pod zarządem karmelitów bosych od początku XVII wieku do roku 1953, sposób administrowania warsztatami rzemieślniczymi, zarządzania oraz relacje między zakonnikami a kamieniarzami w różnych okresach historycznych.
Źródło:
Folia Historica Cracoviensia; 2016, 22; 419-436
0867-8294
Pojawia się w:
Folia Historica Cracoviensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Orszak Dionizosa: Waza Townleya i jej poznańskie kopie
Autorzy:
Rosół, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/2028238.pdf
Data publikacji:
2021-12-28
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
sztuka starożytna
starożytne wazy marmurowe
mitologia grecka
religia grecka
recepcja tradycji starożytnej
Ancient art
Ancient marble vases
Greek mythology
Greek religion
Reception of the Ancient tradition
Opis:
At the main entrance to the Adam Mickiewicz Park in Poznań, there are two identical stone vases with ancient motives. The author indicates that they are not merely neoclassical works from the beginning of the 20th century, but copies of the famous Townley Vase dating back to the Roman times. Then, he focuses on the retinue of Dionysus on the main frieze of the vase and discusses all ten figures occurring in it.
Źródło:
Collectanea Philologica; 2021, 24; 173-183
1733-0319
2353-0901
Pojawia się w:
Collectanea Philologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane, nowe propozycje atrakcji geoturystycznych z Dolnego Śląska
Selected, new proposals of geotouristic attractions from Lower Silesia
Autorzy:
Lorenc, M. W.
Mazurek, S.
Powiązania:
https://bibliotekanauki.pl/articles/344511.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Stowarzyszenie Naukowe im. Stanisława Staszica
Tematy:
kamieniołom
historyczne kamieniołomy
wyrobiska górnicze
kamień
geoturystyka
Dolny Śląsk
granity
marmury
piaskowce
serpentynit
quarry
historical quarries
mine working
industrial stones
Lower Silesia
granite
marble
sandstone
serpentinite
Opis:
Dolny Śląsk jest najbogatszym w Polsce regionem pod względem różnorodności skał, wykorzystywanych jako material budowlany i dekoracyjny. Są to skały zarówno magmowe, jak też osadowe i metamorficzne, które eksploatowane są w rozlicznych kamieniołomach. Tego typu czynne wyrobiska górnicze nie są dostępne do zwiedzania, a tym samym widoczne w nich częstokroć ważne dydaktyczne, unikalne lub nawet tylko ciekawe geologicznie miejsca, pozostają nieznane i edukacyjnie niewykorzystywane. Równocześnie istnieje dużo kamieniołomów już nieeksploatowanych, które porośnięte gęstą roślinnością lub położone z dala od tras turystycznych pozostają również nieznane. Wśród nich wiele jest kamieniołomów historycznych zarówno pod względem czasu rozpoczęcia w nich prac górniczych, jak też faktu, że wydobyto w nich surowiec do wykonania jakiegoś znaczącego elementu architektonicznego lub dzieła sztuki. W artykule opisano miejsca aktualnej eksploatacji podstawowych surowców skalnych, przedstawiając jednocześnie przykładowe obiekty architektoniczne na terenie Wrocławia. Alternatywnie wskazano wyrobiska nieczynne, mogące stanowić atrakcję turystyczną, a przy odpowiednim zagospodarowaniu oraz przedstawionej na miejscu informacji także atrakcję geoturystyczną.
The Lower Silesia is the region of the largest diversity of igneous, sedimentary and metamorphic rocks used for construction and decoration. These rocks are extracted in numerous quarries, which are generally inaccessiblefor tourists. Hence, the educationally important, unique or just interesting sites remain unknown and cannot be included into the educational activity. However, there is a great number of abandoned quarries, which have been densly vegetated since the closure and which were rather distant from popular tourist trails. Among them are many sites of significant historical value due to the age of exploitation or particular stones then used for construction of important historical monuments or for carving the stonework or sculpture masterpieces. The following paper presents the currently operating quarries with the reference to modern buildings in Wroclaw, in which specific stones were used. Moreover, the abandoned quarries were described, which may become tourist and geotourist attractions if properly developed and provided with relevant information.
Źródło:
Geoturystyka; 2010, 3-4; 3-18
1731-0830
Pojawia się w:
Geoturystyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparative analysis of concrete strength using igneous, sedimentary and metamorphic rocks (crushed granite, limestone and marble stone) as coarse aggregate
Analiza porównawcza wytrzymałości betonu z kruszywem grubym w postaci skał magmowych, osadowych i metamorficznych (łamany granit, wapień i marmur)
Autorzy:
Tsado, T. Y.
Powiązania:
https://bibliotekanauki.pl/articles/2068364.pdf
Data publikacji:
2013
Wydawca:
Politechnika Częstochowska
Tematy:
beton
kruszywo grube
skała magmowa
granit
skała osadowa
wapień
skała metamorficzna
marmur
wytrzymałość betonu
wytrzymałość na ściskanie
właściwości fizyczne
analiza porównawcza
concrete
coarse aggregate
igneous rock
granite
sedimentary rock
limestone
metamorphic rock
marble
concrete strength
compressive strength
physical properties
comparative analysis
Opis:
This paper presents a comparative analysis of the effect of the physical properties of coarse aggregate (igneous rock - crushed granite stone; sedimentary rock - limestone and metamorphic rock - marble stone) on the compressive strength of Portland cement concrete and compare their characteristic strength. Tests such as sieve analysis, specific gravity, bulk density, void ratio, porosity, water absorption and aggregate impact value were carried out on aggregates to ascertain their physical properties as they affect the strength of concrete. The concrete strength comparison was confined to characteristic concrete strength of grade 20 and 30 N/mm² only. Two different mix proportions of 1:2:4 and 1:3:6, and water cement ratio of 0.5 and 0.6 for both mixes were used to cast concrete cubes which were hydrated for 7, 14, and 28-day periods respectively. The compressive strength tests conducted on the cast cubes was found to be within the stipulated value of concrete strength of 26.0 N/mm² for 28-day hydration period by British Standard specification. The 28-day concrete cubes cast with these aggregates shows that, at the low strength of 20 N/mm², igneous rock - crushed granite stone c concrete had the highest strength of 26.45 N/mm² followed by Sedimentary-limestone with 26.11 N/mm² and metamorphic rock - marble stone 26.03 N/mm² in that order, and also at the high strength of 30 N/mm², crushed granite concrete gave the highest strength to be 30.11 N/mm² followed by granite 29.78 N/mm² and limestone 29.53 N/mm² in that order.
W artykule przedstawiono analizę porównawczą wpływu właściwości fizycznych kruszywa grubego (skały magmowej - łamany granit, skały osadowej - wapienie i skały metamorficznej - marmur) na ściskanie betonu poprzez porównanie charakterystycznej wytrzymałości. Kruszywo grube poddano badaniom: uziarnienia, gęstości nasypowej, gęstości, porowatości, wskaźnika porowatości, absorpcji wody i współczynnika wpływu kruszywa w celu ustalenia właściwości fizycznych, jakie mają wpływ na wytrzymałość betonu. Porównanie wytrzymałości betonu ograniczono do charakterystycznej wytrzymałości na ściskanie betonu o wartości 20 i 30 N/mm². Do wykonania sześciennych kostek betonowych zastosowano dwie różne proporcje mieszanki 1:2:4 i 1:3:6 i dwie wartości stosunku cementowo-wodnego 0,5 i 0,6, które dojrzewały odpowiednio przez 7, 14 i 28 dni. Testy wytrzymałości na ściskanie przeprowadzone na kostkach sześciennych wykazały, że przewidywana wytrzymałość betonu dla próbek 28-dniowych wynosi 26,0 N/mm², opierając się na normie brytyjskiej. Badania 28-dniowych betonowych kostek, w których zastosowano analizowane kruszywa grube wykazały, że dla wytrzymałości 20 N/mm²: beton z granitem miał największą wytrzymałość - 26,45 N/mm², beton z wapieniem 26,11 N/mm² i z marmurem - 26,03 N/mm². Dla wytrzymałości 30 N/mm² również beton z granitem miał największą wytrzymałość: 30,11 N/mm², następnie z granitem 29.78 N/mm² i wapieniem 29,53 N/mm².
Źródło:
Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo; 2013, 19 (169); 179--191
0860-7214
Pojawia się w:
Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Evaluation Potential as Micronized Calcite of White Marble Waste
Ocena potencjału pozyskania zmikronizowanego kalcytu z odpadów z białego marmuru
Autorzy:
Deniz, Vedat
Polat, Ercan
Powiązania:
https://bibliotekanauki.pl/articles/318935.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
calcite
marble wastes
micronized calcite
physical properties of micronized calcite
chemical properties of micronized calcite
physicochemical properties of micronized calcite
mineralogical properties of micronized calcite
kalcyt
odpady marmuru
kalcyt mikronizowany
właściwości fizyczne mikronizowanego kalcytu
właściwości chemiczne mikronizowanego kalcytu
właściwości fizykochemiczne mikronizowanego kalcytu
właściwości mineralogiczne mikronizowanego kalcytu
Opis:
Natural calcium carbonates have a great importance in the world’s economy due to their numerous applications areas such as calcium carbonate in the paper and paint industries. The final calcite products have rigorous quality specifications which are currently difficult to meet for local producers in Turkey. Therefore, large quantities of high white marble wastes have been transported long distances inside the country to supply the different industrial plants for using calcite. Marble wastes, located in Afyon and Kutahya regions, Turkey’s mid-west, are used generally for concrete and highway purposes. Evaluations of marble wastes are very important for the economic development of any country or region. This study aims at developing new perspective for evaluation of marble wastes as domestic calcite resources and serves as a guide for investment and decision making for the Turkey calcite industry. This paper presents applied research work to determining the product quality for evaluation as micronized calcite of marble wastes and gives an overview of the market situation for the regional producers. The aim of the work is to characterize four different marble wastes and to determine the potential for production of the required quality for the Turkey calcite market;- to control the quality of the products by application tests, including the measurement some tests.
Naturalne węglany wapnia mają ogromne znaczenie w światowej gospodarce ze względu na ich liczne zastosowania, takie jak węglan wapnia w przemyśle papierniczym i malarskim. Produkty handlowe kalcytu muszą spełniać rygorystyczne wymagania jakościowe, które obecnie są trudne do osiągnięcia przez lokalnych producentów w Turcji. Dlatego duże ilości odpadów z przeróbki białego marmuru zostały przetransportowane do zakładów przemysłowych które wykorzystują kalcyt. Odpady marmurowe, znajdujące się w regionach Afyon i Kutahya, w środkowo-zachodniej Turcji, są ogólnie wykorzystywane do betonu i budowy autostrad. Możliwość wykorzystania odpadów marmurowych jest bardzo ważna dla rozwoju gospodarczego każdego kraju lub regionu. W artykule przedstawiono nową metodę oceny odpadów marmurowych jako krajowych zasobów kalcytu. Metoda służy jako przewodnik dla inwestorów i do podejmowania decyzji w branży kalcytu w Turcji. W artykule przedstawiono prace badawcze prowadzone w celu określenia jakości produktu - zmikronizowanego kalcytu z odpadów marmurowych oraz przegląd sytuacji rynkowej producentów regionalnych. Celem artykułu jest scharakteryzowanie czterech różnych odpadów marmurowych i określenie potencjału produkcji kalcytu o wymaganej jakości w Turcji. Zaproponowano kontrolę jakości produktów poprzez testy aplikacyjne, w tym pomiary niektórych parametrów.
Źródło:
Inżynieria Mineralna; 2020, 2, 1; 21-28
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
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