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Tytuł:
Research on the Performance of Polypyrrole Coated Conductive Fabrics Prepared from Different Base Materials
Autorzy:
Liu, Yuanjun
Xue, Huangyu
Liu, Yanyan
Zhao, Jiaqi
Wu, Haiying
Zhao, Xiaoming
Powiązania:
https://bibliotekanauki.pl/articles/24200955.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
base material
polypyrrole
coating
fabrics
electrical conductivity
Opis:
In this paper, polypyrrole coated conductive fabrics were prepared using pyrrole as the monomer, p-toluene sulfonic acid as the doping agent and ammonium persulfate as the oxidant, adopting the simple method of situ polymerization of the liquid phase. Six types of conductive polypyrrole coated fabrics were prepared adopting polyester-cotton blended fabrics, nylon fabrics, wool fabrics, silk fabrics, basalt fabrics and aramid fabric respectively as base materials and using the same process conditions; its electrical conductivity was compared, and the distribution and resistance of the washing fastness of polypyrrole on the surface of those fabrics were studied. Results showed that under the same process conditions, the conductivity of polypyrrole coated terylene fabrics was the best, followed by the polypyrrole coated nylon fabrics and polypyrrole coated wool fabrics. Observed by electron microscope, the distribution of polypyrrole was more homogeneous on different base cloths. After washing, it was concluded that the combination fastness of polypyrrole with polyester-cotton, nylon and wool was better, while the combination fastness of polypyrrole with basalt and aramid was poor.
Źródło:
Fibres & Textiles in Eastern Europe; 2023, 31, 2; 75--81
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chewing efficiency and occlusal forces in PMMA, acetal and polyamide removable partial denture wearers
Autorzy:
Macura-Karbownik, A.
Chladek, G.
Żmudzki, J.
Kasperski, J.
Powiązania:
https://bibliotekanauki.pl/articles/306359.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
materiał protetyczny
wyjmowana proteza częściowa
materiały termoplastyczne
denture base material
removable partial denture
chewing efficiency
occlusal force
thermoplastic materials
Opis:
Purpose: Thermoplastic materials, such as acetal (AC) and polyamide (PA), constitute an alternative to polymethyl methacrylate (PMMA) based resins as the materials for removable partial dentures. However, none of the previous studies compared chewing efficiency and occlusal forces in the wearers of dentures made of various materials. Therefore, the aim of this study was to determine and compare the chewing efficiency and occlusal forces in PMMA, PA and AC RPDs’ wearers. The hypothesis was that the type of denture base material shows a significant effect on chewing efficiency (expressed as a degree of food fragmentation) and occlusal force. Methods: The experiment included the group of 30 patients using removable partial dentures. The dentures made of PMMA, acetal and polyamide were tested in each patient. Each denture was worn for 90 days, with a random sequence of the denture manufacturing and insertion. After 7, 30 and 90 days of each denture wear, chewing efficiency coefficient was determined with the aid of a sieving method, and occlusal force was measured with a dynamometer. Results: The use of dentures made of PMMA or acetal was reflected by a marked increase in chewing efficiency and occlusal force. None of these parameters changed significantly with the time of denture wear. Moreover, no significant correlation was found between chewing efficiency and occlusal forces. Conclusions: Denture base material exerts significant effects on the degree of food fragmentation and the level of occlusal forces. The use of dentures and clasps made of materials with lower modulus of elasticity is associated with lower chewing efficiency and lower occlusal forces.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 1; 137-144
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ensuring the reproduction of the material and technical basis of agriculture
Autorzy:
Cherevko, H.
Powiązania:
https://bibliotekanauki.pl/articles/410746.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
Ukraine
agriculture
material and technical base
material and technical resources
reproduction system
Opis:
In this article the results of the generalization of the essence of the process of reproduction of material and technical base and material and technical resources in agriculture, assessment of their condition and use, studying the level of organization of the system for providing these resources of agricultural producers, and substantiating ways to improve it, are highlighted. In agriculture ensuring of the overall reproduction process depends crucially on ensuring the effective implementation of a qualitative reproduction of its material and technical base. At present, the level of agricultural supply of Ukraine by material and technical resources, their structure and level of efficiency of use and the system of their reproduction leave much to be desired. The main factors of unsatisfactory state of the material and technical base of agriculture and its reproduction in Ukraine are: low investment attractiveness of agricultural enterprises; the absence of a state technical policy and a well-established system of material and technical support in the country; lack of financing of scientific research in the field of production of machinery and equipment and their use in agriculture; low-quality storage of agricultural machinery; lack of training system for working on complex agricultural machinery and its maintenance; difficult financial and economic situation of domestic factories producing agricultural machinery and its low quality. The main directions of solving the problem of expanded reproduction of the material and technical base of agricultural enterprises are the objective regulation of the parity of prices for agricultural and industrial products, the change of depreciation policy in order to increase its importance for accelerating the modernization of technical and technological processes, reforming the domestic agricultural sector of the economy, state assistance development of domestic agricultural machine-building and tractor construction in cooperation with foreign enterprises, creation of a system of repair and maintenance services and the proper infrastructure of the market of agricultural machinery and training system for working with agricultural machinery. A real step in this direction could be the decision to implement budget allocations for the technical reequipment of Ukrainian agricultural producers and the development of infrastructure of the agricultural machinery market at the rate of at least one percent of the amount of the expenditure part of the state budget. It is also worth raising of funds for research in the field of development and improvement of agricultural machinery, equipment and tractors in order to increase their competitiveness.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 3; 17-23
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ewolucja cukrownictwa polskiego i jego stan na początku XXI wieku
Evolution of Polish sugar industry and its position at the beginning of 21st century
Autorzy:
Kapusta, Franciszek
Powiązania:
https://bibliotekanauki.pl/articles/26731644.pdf
Data publikacji:
2023-12-21
Wydawca:
Centrum Doradztwa Rolniczego w Brwinowie. Oddział w Poznaniu
Tematy:
cukrownictwo
cukrownie
burak cukrowy
baza surowcowa
lokata
postęp
sugar industry
sugar factories
sugar beet
raw material base
investment
progress
Opis:
Celem opracowania było ukazanie ewolucji cukrownictwa na ziemiach polskich od chwili powstania cukrowni po pierwsze dekady XXI w. oraz współzależności funkcjonowania cukrowni jako fabryk cukru i bazy surowcowej - produkcji buraka cukrowego przez producentów rolnych, a szczególnie ukazanie zmian: - liczby pracujących cukrowni i współczesnej organizacji ich funkcjonowania wraz z mocą produkcyjną cukru, - bazy surowcowej w zakresie: powierzchni uprawy buraka cukrowego, zbiorów i plonów w latach 1934-1938 do 2021 r., liczby plantatorów buraka cukrowego ogółem, liczby plantacji przypadających średnio na 1 cukrownię oraz przeciętnej powierzchni plantacji u 1 producenta buraków cukrowych w latach 1981-2021, - zróżnicowania bazy surowcowej cukrownictwa w przestrzeni (według województw); natężenie uprawy buraka cukrowego, zbiory oraz plony buraka cukrowego; ustalono również lokaty województw w tym zakresie, - produkcji i przeznaczenia cukru; zużycie krajowe i eksport w latach 2000-2021. W opracowaniu wykorzystano takie źródła wiedzy i danych, jak: publikacje naukowe zwarte i ciągłe, materiały statystyczne Głównego Urzędu Statystycznego (GUS) – roczniki, analizy rynkowe Instytutu Ekonomiki Rolnictwa i Gospodarki Żywnościowej – Państwowego Instytutu Badawczego (IERiGŻ-PIB). Zgromadzony materiał został opracowany i zinterpretowany za pomocą metody porównawczej w formie horyzontalnej i wertykalnej oraz wybranych elementów statystyki opisowej. Uzyskane wyniki zostały przedstawione w postaci tabelarycznej w połączeniu z opisem słownym. Cukrownictwo polskie podlega ciągłym zmianom zarówno pod względem bazy surowcowej jak i cukrowni. Ogólnie należy stwierdzić, że w obu dziedzinach działalności zachodzą procesy koncentracji. Wyprodukowany cukier przeznaczony jest na potrzeby krajowe, a nadwyżka na eksport. Tylko w latach 2003-2021 Polska wyeksportowała 6782,5 tys. ton cukru o łącznej wartości 2690,1 mln euro. Cukrownictwo zabezpiecza z nadwyżką zapotrzebowanie kraju na cukier i dostarcza dewiz.
The aim of the study was to show the evolution of the sugar industry in Poland from that moments of the establishment of first sugar factores up to the first decades of the 21st century and the interdependence of the functioning of sugar factories and the raw material base - sugar beet production by agricultural producers, and in particular to show the changes regarding: – the number of working sugar factories and the modern organization of their operation together with the sugar production capacity, – raw material base in terms of sugar beet cultivation area, crops and yields in the years 1934-1938 until 2021, the total number of sugar beet growers, the average number of plantations per 1 sugar factory and the average area of plantations per sugar beet producer in the years 1981-2021, – geo-diversification of the raw material base of the sugar industry (by voivodeships); intensity of sugar beet cultivation, crops and yields of sugar beet; the positions of voivodeships in this respect were also determined, – production and intended use of sugar; domestic consumption and exports in years 2000-2021. The study uses such sources of knowledge as: scientific publications, compact and continuous, statistical materials of the Central Statistical Office (GUS) – yearbooks, market analyzes of the Institute of Agricultural and Food Economics – National Research Institute (IERiGŻ-PIB). The collected material was developed and interpreted using the comparative method in the horizontal and vertical form and selected elements of descriptive statistics The obtained results were presented in a tabular form with appropriate comments. The Polish sugar industry is subject to constant changes both in terms of the raw material base and sugar factories. In general, it should be stated that concentration processes are taking place in both fields of activity. The sugar produced is intended for domestic needs, and the surplus for export. Only in the years 2003-2021, Poland exported 6,782.5k t of sugar with a total value of EUR 2,690.1 million. The sugar industry provides a surplus of the country's demand for sugar and provides foreign currencies.
Źródło:
Zagadnienia Doradztwa Rolniczego; 2023, 114, 4; 67-82
1232-3578
2719-8901
Pojawia się w:
Zagadnienia Doradztwa Rolniczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zasoby genowe i potencjał hodowlany daglezji (Pseudotsuga menziesii (Mirb.) Franco) w lasach niektórych krajów europejskich
Genetic resources and silvicultural potential of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) in some European countries
Autorzy:
Chałupka, W.
Powiązania:
https://bibliotekanauki.pl/articles/991061.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Europa
gatunki introdukowane
drzewa lesne
daglezja zielona
Pseudotsuga menziesii
zasoby genowe
program hodowlany
selekcja
Francja
Niemcy
Wielka Brytania
Dania
Holandia
Polska
drzewostany daglezjowe
zasobnosc drzewostanu
baza nasienna
douglas fir
introduction
europe
volume stock
registered base material
Opis:
Since the beginning of XIX century a considerable number of Douglas fir populations from North America were introduced to many European countries. In France, Douglas fir is still going to increase significantly its participation in growing stock and wood harvest. There are also some countries (e.g. the Netherlands), where the interest in breeding and silviculture of Douglas fir have been decreased in last decades. The data from the European literature was collected to show a current volume stock, growth increment, gene resources and qualified seed sources of Douglas fir in the outlook of the future role of the species in European forest economy. A short outlook on the breeding programs of Douglas fir working out in several European countries was also presented.
Źródło:
Sylwan; 2014, 158, 05; 331-339
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza wykorzystania cystern samochodowych do odbioru mleka w małym zakładzie mleczarskim
Analysis of auto-cistern utilization in the field of milk purchase on the example of a small dairy plant
Autorzy:
Gaworski, M.
Makowska, K.
Powiązania:
https://bibliotekanauki.pl/articles/289810.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
baza surowcowa
cysterna samochodowa
mleko
skup mleka
zużycie paliwa
raw material base
auto-cistern
dairy plant
milk
milk purchase
fuel consumption
Opis:
Celem pracy była analiza czynników kształtujących efektywność odbioru i transportu mleka surowego cysternami samochodowymi, na przykładzie obsługi bazy surowcowej zakładu mleczarskiego z terenu województwa mazowieckiego. Zakres badań uwzględniał zmiany produkcji mleka na terenie bazy surowcowej danego zakładu, a także wielkości charakteryzujące pracę cystern samochodowych, w tym pokonywane odległości i ilość zużytego paliwa. Analiza danych pochodzących z zakładu mleczarskiego i jego bazy surowcowej potwierdziła istnienie sezonowości produkcji mleka, mogącej przekładać się na różnicowanie wskaźników wykorzystania cystern samochodowych do odbioru i transportu mleka w skali roku. Przedstawiono powiązania wskaźnika koncentracji skupu mleka ze wskaźnikiem paliwochłonności skupu mleka.
The objective of the paper was to analyze some factors influencing the effectiveness of collection and transport of raw milk by auto-cisterns on the example of dairy production area in Mazowieckie province. Detailed investigations covered changes of milk production in the considered dairy area as well as some data resulting from operation of auto-cisterns, like transport distances and fuel consumption. Analysis of data from a dairy plant and the area of milk production confirmed the seasonality of milk production as a source of some monthly differences in auto-cistern utilization and management. Some relationships between milk purchase concentration and the fuel-use index were presented and discussed.
Źródło:
Inżynieria Rolnicza; 2013, R. 17, nr 2, t. 1, 2, t. 1; 61-68
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asbestos base and asbestos free brake lining materials: Comparative study
Autorzy:
Shinde, Dinesh
Mistry, K. N.
Powiązania:
https://bibliotekanauki.pl/articles/1178764.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
asbestos free
asbestos base
brake lining material
tribological properties
Opis:
Frictional brake lining materials are broadly made of asbestos as their constituent. But asbestos is dangerous for handling due to health hazardous. Asbestos has ample physical, mechanical and tribological properties. The material replacing it should have all these properties with no undermine. In this paper a study on asbestos base and asbestos free brake lining material is presented. Purpose behind this is combine the demerits of asbestos free and asbestos base materials with comparable properties. Some organic waste from farm like banana peel, palm karnel shell, were also tested for the replacement of asbestos and they found worth through comparison with each others.
Źródło:
World Scientific News; 2017, 61, 2; 192-198
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Razvitie sistemy formirovanija material'no-tekhnicheskojj bazy sel'sko khozjajjstva Ukrainy
Development of the system of Ukraine’s material and technical base of agriculture formation
Autorzy:
Cherevko, G.
Krupych, O.
Krupych, R.
Powiązania:
https://bibliotekanauki.pl/articles/77307.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
agricultural enterprise
Ukraine
material
technical base
agricultural machine
seller
import
producer
Opis:
Some main results of material and technical base in agricultural enterprises in Ukraine modern state investigation are presented and some main tendencies in the processes of its formation are defined. The dynamic and structure of agricultural technique supplying from abroad is shown. Special attention is devoted to the rising role of leadering dealers of agricultural technique producers. The characteristic of such main dealers of agricultural technique in Ukraine, as well as some conditions of dealer system formation and specifics of competitive fight among dealers for markets and clients are done. The evaluation of statement and possibilities of domestic agricultural machines plants development is realized and needed for that conditioned are defined.
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 4
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of terrestrial laser scanning to the development and updating of the base map
Autorzy:
Klapa, P.
Mitka, B.
Powiązania:
https://bibliotekanauki.pl/articles/145340.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
base map
terrestrial laser scanning
cartographic material
naziemne skanowanie laserowe
badania geologiczne
mapa
Opis:
The base map provides basic information about land to individuals, companies, developers, design engineers, organizations, and government agencies. Its contents include spatial location data for control network points, buildings, land lots, infrastructure facilities, and topographic features. As the primary map of the country, it must be developed in accordance with specific laws and regulations and be continuously updated. The base map is a data source used for the development and updating of derivative maps and other large scale cartographic materials such as thematic or topographic maps. Thanks to the advancement of science and technology, the quality of land surveys carried out by means of terrestrial laser scanning (TLS) matches that of traditional surveying methods in many respects. This paper discusses the potential application of output data from laser scanners (point clouds) to the development and updating of cartographic materials, taking Poland’s base map as an example. A few research sites were chosen to present the method and the process of conducting a TLS land survey: a fragment of a residential area, a street, the surroundings of buildings, and an undeveloped area. The entire map that was drawn as a result of the survey was checked by comparing it to a map obtained from PODGiK (pol. Powiatowy Ośrodek Dokumentacji Geodezyjnej i Kartograficznej – Regional Centre for Geodetic and Cartographic Records) and by conducting a field inspection. An accuracy and quality analysis of the conducted fieldwork and deskwork yielded very good results, which provide solid grounds for predicating that cartographic materials based on a TLS point cloud are a reliable source of information about land. The contents of the map that had been created with the use of the obtained point cloud were very accurately located in space (x, y, z). The conducted accuracy analysis and the inspection of the performed works showed that high quality is characteristic of TLS surveys. The accuracy of determining the location of the various map contents has been estimated at 0.02-0.03 m. The map was developed in conformity with the applicable laws and regulations as well as with best practice requirements.
Źródło:
Geodesy and Cartography; 2017, 66, 1; 59-72
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Market transformation of system of keeping agribusiness supplied with material and technical resources in Ukraine
Rynochnaja transformacija sistemy obespechenija APK materialnotekhnicheskimi resursami v Ukraine
Autorzy:
Cherevko, G.
Powiązania:
https://bibliotekanauki.pl/articles/77050.pdf
Data publikacji:
2015
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
market transformation
competition
material resource
agricultural development
agricultural policy
economic crisis
technological progress
technical base
Ukraine
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 4
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
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