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Number of results: 68
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Abstract

Art has never aspired to wield authority to the same extent as science, because it left a wide margin for itself resulting from the intrinsic consent to the subjectivity of both the creator and the audience.
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Authors and Affiliations

Katarzyna Kasia
1

  1. Department of Culture Theory, Faculty of Management of Visual Culture, Academy of Fine Arts in Warsaw
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Abstract

The role of illustration in our studies of natural history has changed over the centuries, not just in how it depicts specimens or technologies but also as our interest in its different aspects has shifted.
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Authors and Affiliations

Max Rykaczewski
1

  1. Plant and Fungi Herbarium, University of Gdańsk
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Abstract

The interiors of the Imperial Castle in Poznań are embellished with scores of different stone varieties. In order to preserve and renovate them, an in-depth conservation examination needed to be performed.
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Authors and Affiliations

Maciej Czyński
1

  1. Monument Service
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Abstract

We talk with Prof. Andrzej Jajszczyk about his encounter with the historic ethnic group of Slovincians, his friendship with film director Andrzej Wajda, and his fascination with Japanese culture.
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Authors and Affiliations

Andrzej Jajszczyk
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Abstract

Where abstraction meets reality.
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Authors and Affiliations

Krzysztof Sikorski
1

  1. Institute of Environmental Sciences, Jagiellonian University
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Abstract

What shared intellectual foundations underpin collaboration between the artistic community and scientists? What benefits can artists and biologists derive from working together? Can their very different spheres of creativity support one another?
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Authors and Affiliations

Adam Szewczyk
1
Hanna Fabczak
1 2
Marek A. Olszyński
3

  1. Nencki Institute of Experimental Biology, PAS, Warsaw
  2. Marceli Nencki Foundation for the Support of Biological Sciences, Warsaw
  3. Institute of Fine Arts, University of Rzeszów
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Abstract

At first glance mathematics and art might appear very distant, perhaps even directly opposed to one another, but the fact is that they have quite a lot in common. How are they interlinked, and what do these links tell us?
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Authors and Affiliations

Robert A. Wolak
1

  1. Institute of Mathematics, Jagiellonian University in Kraków
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Abstract

Sandra Frydrysiak from the Institute of Humanities at the SWPS University in Warsaw talks about what dance teaches us about the human brain and the ways in which we experience the world around us.
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Authors and Affiliations

Sandra Frydrysiak
1 2

  1. Institute of Humanities, SWPS University in Warsaw
  2. Joint European Master’s Degree in Women’s and Gender Studies (GEMMA), University of Lodz
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Abstract

The high numbers of residents and dense urban fabric of buildings and infrastructure found in cities mean that extreme weather events have a particularly severe impact on them. Furthermore, urban development is itself an important element of climate change.
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Authors and Affiliations

Agnieszka Sobol
1

  1. Institute of Urban and Regional Development
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Abstract

What is the importance of art in shaping a child’s personality and molding them for the future?
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Authors and Affiliations

Urszula Szuścik
1

  1. Institute of Pedagogy, Faculty of Arts and Educational Science, University of Silesia in Katowice
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Abstract

As revolutionary advances in science and technology make the world increasingly complex, initiatives that combine science and art become more important than ever. “Rhizosphere: The Big Network of Small Worlds” is a project that brings together art, science, and technology.
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Authors and Affiliations

Joanna Hoffmann
1
Marlena Lembicz
2

  1. Studio of Transdisciplinary Projects and Research, University of the Arts Poznan
  2. Department of Systematics and Environmental Botany, Adam Mickiewicz University in Poznań
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Abstract

We talk about the crossovers between science and art with the artist and pedagogue Prof. Adam Wsiołkowski.
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Authors and Affiliations

Adam Wsiołkowski
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Abstract

The concept of social art is not exactly new, dating back to at least the 1970s. Its current revival, however, creates an opportunity to reconsider the social and civic potential of artistic practices.
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Authors and Affiliations

Katarzyna Niziołek
1

  1. Institute of Sociology, University of Białystok
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Abstract

Groundwater is a very important natural resource to support the activities of the residents of Pakis District, Malang Regency. On the other hand, increased activity puts pressure on groundwater quality. Agricultural intensification, urbanisation, and industrialisation can be sources of pollutants. Hydrological factors, topography, lithology, and surrounding rainfall are triggers for contamination of groundwater. The main objective of this research is to determine the characteristics, quality of groundwater, and its susceptibility to pollution. To complete this research, geoelectric measurements were carried out at 43 points spread throughout the study area and sampling of 18 shallow wells in agricultural, residential, and industrial areas for chemical analysis. All data obtained were analysed to create a map of the spatial distribution of groundwater vulnerability. The results show that the groundwater in the study location is in the transition zone and flows through the volcanic rock layers. The level of groundwater pollution is in the uncontaminated status to heavily polluted with pollutants in the form of heavy metal manganese and Escherichia coli bacteria. The spatial distribution of groundwater intrinsic vulnerability shows low, moderate, and high levels of vulnerability, respectively 32.99%, 60.87%, and 6.14% of the research area. Groundwater specific vulnerability associated with land use factors shows that 26.25% are negligible, 42.46% are low, and 31.29% are moderate. From this it can be concluded that the study area has been polluted both geogenically and anthropogenically, therefore, special actions must be taken to restore the quality of groundwater.
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Bibliography

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WELLS E.H. 1918. Manganese in New Mexico. Bulletin of The New Mexico State School of Mines. No. 2 pp. 13+84.
WIDYASTUTI M., SUDARTO, ANGGAYANA K 2006. Pengembangan metode ‘DRASTIC’ untuk prediksi kerentanan air tanah bebas terhadap pencemaran di Sleman [Development of the ‘DRASTIC’ method for predicting the vulnerability of unconfined groundwater to pollution in Sleman. Majalah Geografi Indonesia. Vol. 20(1) p. 32–51.
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Authors and Affiliations

Prasetyo Rubiantoro
1
Mohammad Bisri
1
Aminudin Afandhi
1

  1. Universitas Brawijaya, Postgraduate Program, Jalan Veteran, Malang 65142, Indonesia
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Abstract

Geopolymer is widely studied nowadays in various scope of studies. Some of the ongoing studies are the study of the various materials towards the geopolymer strength produced. Meanwhile, some of the studies focus on the mixing of the geopolymer itself. This paper discussed the phase analysis of metakaolin/dolomite geopolymer for different solid to the liquid ratio which was, 0.4, 0.6, 0.8, and 1.0, and the properties that affected the geopolymer based on the phases. The constant parameters in this study were the percentage of metakaolin and dolomite used. The metakaolin used was 80% meanwhile dolomite usage was 20%. Besides that, the molarity of NaOH used is 10M and the alkaline activator ratio used is 2.0. All the samples were tested at 28 days of curing. The results show that the 0.8 solid to the liquid ratio used gave better properties compare to other solid to liquid ratio. The phases analyzed were quartz, sillimanite, mullite, and faujasite. The 0.8 S/L ratio shows the better properties compared to others by the test of phase analysis, compressive strength morphology analysis, and functional group analysis.
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Authors and Affiliations

Ahmad Syauqi Sauffi
1
ORCID: ORCID
Wan Mastura Wan Ibrahim
1
ORCID: ORCID
Mohd Mustafa Al Bakri Abdullah
2
ORCID: ORCID
Masdiyana Ibrahim
1
ORCID: ORCID
Romisuhani Ahmad
1
ORCID: ORCID
Fakhryna Ahmad Zaidi
1
ORCID: ORCID

  1. Universiti Malaysia Perlis (UniMAP), Faculty of Engineering Technology, P. O. Box 77, d/a Pejabat, Pos Besar, 01007 Kangar, Perlis, Malaysia
  2. Universiti Malaysia Perlis (UniMAP), Centre of Excellence Geopolymer and Green Technology, School of Material Engineering, P. O. Box 77, d/a Pejabat, Pos Besar, 01007 Kangar, Perlis, Malaysia
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Abstract

The paper presents Finite Elements Method numerical analysis of strength of friction pairs most often used in hip and knee joints alloplasty. Analytic solutions are to indicate and define the areas where damages or premature wear of cooperating elements may occur. Analytical-experimental research states complete and thorough analysis. Accurate technical simulation of the joints of the human motor system, is difficult to conduct due to high level of complexity of human bio-bearings. All attempts to simulate the work of human joints, lead only to an approximate reflection of real human joint motion. To properly face the above problems, along with numerical analysis, there have been conducted empirical tests on the simulator of knee joint endoprosthesis
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Authors and Affiliations

M. Nabrdalik
1
ORCID: ORCID
M. Sobociński
1
ORCID: ORCID

  1. Czestochowa University of Technology, Faculty of Mechanical Engineering and Computer Science, Department of Technology and Automation, 21 Armii Krajowej Av ., 42-201 Czestochowa, Poland
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Abstract

This study focused on the reclamation of ash from incineration process and development of new artificial lightweight aggregate (LWA) that have comparable properties with existing natural coarse aggregate. The main objective of this study is to examine potential use of recycled municipal solid waste incineration (MSWI) ash as raw material in LWA production with a method of cold-bonded pelletization. Two types of incineration ash which is bottom ash (BA) and fly ash (FA) were collected from Cameron Highland Incineration Plant, Malaysia. The properties of BA and FA are studied by means of X-Ray Fluorescence (XRF) and microstructure of these ashes were inspected using Scanning Electron Microscope (SEM). The properties of BALA and FALA produced in this study is examined including loose bulk density, water absorption and aggregate impact value (AIV). From the results of both types of artificial LWA, the lowest loose bulk density of BALA is BALA50 with 564.14 kg/m3 and highest is at 831.19 kg/m3. For FALA50, lowest loose bulk density is 573.64 kg/m3 and highest is 703.35 kg/m3. Water absorption of BALA and FALA is quite similar with one another in with the value of 23.8% and 22.6%, respectively. Generally, FALA have better qualities of LWA comparing with BALA with lower bulk density and water absorption and can be categorized as strong aggregate. In summary, reclamation and reutilization of incinerator ash has generated acceptable qualities for artificial LWA. Both types of BA and FA shown a great potential to be recycled as additional materials in artificial aggregate production.
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Authors and Affiliations

Norlia Mohamad Ibrahim
1 2
ORCID: ORCID
Roshazita Che Amat
1 2
ORCID: ORCID
Mustaqqim Abdul Rahim
1
ORCID: ORCID
Nur Liza Rahim
1 2
ORCID: ORCID
Abdul Rahim Abdul Razak
3
ORCID: ORCID

  1. Universiti Malaysia Perlis (UniMAP), Faculty of Civil Engineering Technology, Perlis, Malaysia
  2. Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering Technology, Center of Excellence Geopolymer and Green Technology, Perlis, Malaysia
  3. Universiti Malaysia Perlis (UniMAP), Faculty of Electrical Engineering Technology, Perlis, Malaysia
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Abstract

This study summarised the recent achievement in developing fiber reinforced geopolymer concrete. The factor of replacing Ordinary Portland Cement (OPC) which is due to the emission of carbon dioxide that pollutes the environment globally is well discussed. The introduction towards metakaolin is presented. Besides, the current research trend involved in geopolymer also has been reviewed for the current 20 years to study the interest of researchers over the world by year. Factors that contribute to the frequency of geopolymer research are carried out which are cost, design, and the practicality of the application for geopolymer concrete. Besides, the importance of steel fibers addition to the geopolymer concrete is also well discussed. The fundamental towards metakaolin has been introduced including the source of raw material, which is calcined kaolin, calcined temperature, chemical composition, geopolymerisation process, and other properties. Alkali activators which are mixing solution between sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) have been reviewed. The mechanical properties of fibers reinforced metakaolin-based geopolymer concrete which is compressive and flexural are thoroughly reviewed. The compressive and flexural strength of fiber-reinforced metakaolin geopolymer concrete shows some improvement to the addition of steel fibers. The reviews in this field demonstrate that reinforcement of metakaolin geopolymer concrete by steel fibers shows improvement in mechanical performance.
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Authors and Affiliations

Meor Ahmad Faris
1 2
ORCID: ORCID
Mohd Mustafa Al Bakri Abdullah
1 3
ORCID: ORCID
Ratnasamy Muniandy
ORCID: ORCID
Shamala Ramasamy
1 2
ORCID: ORCID
Mohammad Firdaus Abu Hashim
1 2
ORCID: ORCID
Subaer Junaedi
4
ORCID: ORCID
Andrei Victor Sandu
5
ORCID: ORCID
Muhammad Faheem Mohd Tahir
1 3
ORCID: ORCID

  1. University Malaysia Perlis, Faculty of Chemical Engineering Technology, Center of Excellent Geopolymer and Green Technology, Perlis, Malaysia
  2. University Malaysia Perlis (UniMAP), Faculty of Mechanical Engineering Technology, Perlis, Malaysia
  3. University Malaysia Perlis (UniMAP), Faculty of Chemical Engineering Technology, Perlis, Malaysia
  4. Universitas Negeri Makasssar, Faculty of Mathematics and Natural Sciences, Indonesia
  5. Gheorge Asachi Technical University of Lasi, Faculty of Materials Science and Engineering, Lasi, Romania
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Abstract

The electronic, magnetic, and optical properties of PtCoBi half-Heusler compound [001] surfaces and its bulk state have been investigated in the framework of density functional theory using GGA approximation. The half-metallic behaviors of CoBi-term, CoPt-term and PtBi-term decrease with respect to its bulk state. The spin polarization at the Fermi level is 73.2% for the bulk state, and it is –64.4% and –64.1% for the CoBi-term and PtBi-term, respectively while less polarization has been observed for the ­CoPt-term. All terminations have given almost similar optical responses to light. Plasmon oscillations for the terminations occur in the range of 12.5 to 14.5 eV (21 to 22 eV) along xx (zz), and it occurs at 23 eV for the bulk state. The refractive index for the bulk and all three terminations is very high in the infrared and visible areas, meaning a very strong metallic trend in these compounds. The phenomenon of super-luminance occurs for the incident light with energy exceeding 5.5 eV for all three terminations, and it occurs in the range of 10 eV for the bulk mode. These terminations show transparent behavior after the energy of 10 eV.
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Authors and Affiliations

Hamed Rezazadeh
1
ORCID: ORCID
Mohamadreza Hantehzadeh
1
ORCID: ORCID
Arash Boochani
2
ORCID: ORCID

  1. Islamic Azad University, Department of Physics, Science and Research Branch, Tehran, Iran
  2. Islamic Azad University, Department of Physics, Kermanshah Branch, Kermanshah, Iran
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Abstract

Currently, due to the economic and ecological aspects, light alloys are increasingly important construction material, in particular in the transport industry. One of the popular foundry magnesium alloys is the alloy AZ91, which among others due to mechanical properties and technological features, is used, for example, for light structural parts.
The paper presents the results of research on modification of the AZ91 alloy surface layer in the plasma electrolytic oxidation process. The change of usable properties of the produced coatings was obtained by introducing additions of silicon carbide or boron nitride. The thickness and hardness of the protective layers produced, resistance to scratches and corrosion resistance were determined. Moreover, the friction coefficient of the coating-steel pair was investigated. The quality of the connections made between the coating and the substrate, i.e. the magnesium alloy, was also evaluated. The results obtained for coatings with silicon carbide or boron nitride additives were always compared to the results obtained for unmodified samples.
On the basis of the obtained results, it was shown that the introduction of boron nitride additive to the AZ91 alloy coating produced in the plasma electrolytic oxidation process significantly improves the resistance to: (i) corrosion and (ii) abrasive wear of the coating.
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Authors and Affiliations

D. Pelczar
1
P. Długosz
2
ORCID: ORCID
P. Darłak
2
ORCID: ORCID
A. Szewczyk-Nykiel
1
ORCID: ORCID
M. Nykiel
1
ORCID: ORCID
M. Hebda
1
ORCID: ORCID

  1. Cracow University of Technology, Faculty of Materials Engineering and Physics, Department of Materials Engineering, 24 Warszawska St r., 31-155 Krakow, Poland
  2. Centre of Casting Technology, Research Network Lukasiewicz-Krakow Institute of Technology, Zakopiańska 73, 30-418 Krakow, Poland

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