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Tytuł:
Analysis of the quality pork obtained from carcasses fatteners of Polish Landrace and Pulawska breed
Analiza jakości mięsa pozyskanego z tusz tuczników rasy polskiej białej zwisłouchej oraz puławskiej
Autorzy:
Babicz, M.
Kropiwiec, K.
Kasprzak, K.
Skrzypczak, E.
Hałabis, M.
Powiązania:
https://bibliotekanauki.pl/articles/2197002.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
quality analysis
sensory quality
pork
carcass
fattener
Polish Landrace breed
Pulawska breed
pig
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica; 2013, 31, 4; 1-7
0239-4243
2083-7399
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Between Culture and Nature: Some Considerations on the Life History Perspective
Autorzy:
Zamorski, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/20312130.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
life history
microhistory
life course theory
quality analysis
biographical studies
Opis:
Life history is a term usually assigned in the history of historiography to the Italian school of microhistory. In fact, it is a concept typical for the natural sciences in the case of which it is a framework focused on studies of life history strategies as well as life cycles. Life history analysis has become the subject of numerous studies around the world and has been gaining in popularity in social sciences. The author presents life history as a certain research perspective for historical studies which is capable of incorporating both natural and cultural approaches. He draws inspirations of the life history perspective from recent research into history of modern Poland.
Źródło:
Historyka studia metodologiczne; 2021, 51, Spec. iss.; 369-387
0073-277X
Pojawia się w:
Historyka studia metodologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis and improvement of product quality using selected methods and tools in automotive industry enterprise
Autorzy:
Kardas, E.
Pustějovská, P.
Powiązania:
https://bibliotekanauki.pl/articles/339832.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Zarządzania Produkcją
Tematy:
quality
quality analysis
quality tools
improvement
airbag module
jakość
analiza jakości
narzędzia jakości
doskonalenie
moduł poduszki powietrznej
Opis:
The work included a qualitative analysis of a product installed in passenger cars of a selected make and model. The product is an airbag module manufactured for one type of passenger car. This product is produced by an international production company with its plant in the northern part of the Silesian province. The initial analysis covered six calendar months, of which the month chosen for further analysis was the one in which the percentage of nonconforming products in the total production exceeded the assumed acceptable value. The analysis used four basic quality management instruments: the Pareto chart, the FMEA method, Ishikawa chart and the 5 Whys technique. After the analysis, improvement actions were also proposed.
Źródło:
Zarządzanie Przedsiębiorstwem; 2018, 21, 3; 18-25
1643-4773
Pojawia się w:
Zarządzanie Przedsiębiorstwem
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality analysis of seeds of Cupressus Linn. species for seed testing and plus tree selection
Autorzy:
Sahai, K
Powiązania:
https://bibliotekanauki.pl/articles/41512.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
germplasm
Cupressus
Cupressaceae
tree selection
sterility
endosperm
seed testing
embryo
quality analysis
seed
Opis:
Cupressus Linn., commonly known as ‘cypress', belongs to the family Cupressaceae. It consists of 20 species with a wide and discontinuous distribution in the Northern Hemisphere. In the present study, three species, namely C. torulosa Don., C. arizonica Greene and C. glabra Sudw., growing in the western Himalayan region of India at an altitude of 1760 m. have been studied. This is a preliminary attempt where embryology is used in estimating seed quality and in seed testing. Seed quality was analysed according to five (0-IV) seed classes based on the presence of the embryo and endosperm and their nature of development in the seed-cutting test. Seeds having neither embryo nor endosperm belong to class ‘0'. In class ‘I' seeds contain the endosperm but a shrivelled embryo or sometimes no embryo. Class ‘II' contains seeds with an embryo of half-length of the embryo cavity and class ‘III' seeds containing an embryo of at least three-quarter length of the embryo cavity. Seeds with completely developed full embryo were assigned to class ‘IV'. However a high percentage of seeds of classes 0-III present in seed lots from particular trees of a species decrease the quality of seeds. Similarly a high percentage of seeds of class ‘IV' improves the seed quality of a given tree selected as plus tree for germplasm collection.
Źródło:
Dendrobiology; 2002, 47 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data mining model for quality control of primary aluminum production process
Autorzy:
Horvath, M.
Vircikova, E.
Powiązania:
https://bibliotekanauki.pl/articles/406754.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
quality control analysis
data mining
multivariate autocorrelated process
quality improvement
Opis:
Traditional statistical process control approaches are less effective in dealing with multivariate and autocorrelated processes. With the continual increase in process complexity, this inefficiency is becoming more apparent. A special type of multivariate and autocorrelated process is a process occurring within a heterogeneous production environment (a variety of types of machines, pots, etc. used for the same task). This makes the quality control of such processes more difficult. The approach presented in the paper utilizes time series fitting, cluster analysis and association mining in relation to a single data mining model for the analysis of complex multivariate autocorrelated processes. The aim is to divide the production cells (machines, pots, etc.) into groups exhibiting similar behaviors. This can then be used for more effective quality control of the entire process and afterwards to analyze the reasons for this behavior. This paper includes someof the results obtained from applying the model to an actual multivariate high autocorrelated process, the production of primary aluminum using the Hall-Heroult electrolysis process. The Hall-Heroult electrolysis process is a continual process that is ongoing in several pots simultaneously. The average plant operates 300 pots. Therefore, the quality control of such a complex process faces many issues concerning monitoring and problem diagnosis. The paper describes a method for dividing the pots into control groups exhibiting similar behaviors, which can then be used in the planning phase of the quality control analysis and to make improvements within these groups and thereby within the whole process.
Źródło:
Management and Production Engineering Review; 2012, 3, 4; 47-53
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality of life of people with disabilities: Differences in satisfaction with indicators and domains between active and inactive individuals
Autorzy:
Nemček, Dagmar
Powiązania:
https://bibliotekanauki.pl/articles/1031974.pdf
Data publikacji:
2016
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
the Subjective Quality of Life Analysis
Opis:
Quality of life (QoL) is strongly influenced by an individual’s health. The lack of population studies measuring the QoL of people with physical disabilities (PD) and people who are deaf and hard of hearing (D/HH) encouraged us to consider conducting this research. The aim of this study was to compare the satisfaction with quality of life indicators (QoLI) and domains (QoLD) between people with PD and people who are D/HH. This study included 315 individuals with disabilities, concretely with PD and hearing impairments. Participants were divided into two groups based on participation in physical activities: active (people with PD, n=73; people who are D/HH, n=52) and inactive (people with PD, n=77; people who are D/HH, n=113). The second part of Subjective Quality of Life Analysis (S.QUA.L.A.) between active and inactive members with disabilities was used. The Pearson chi-square test was used to determine the differences in satisfaction with 23 QoLI and 5 QoLD (general health, physical health and level of independence, psychological health and spirituality, social relationships and environment) between the two groups (active and inactive) within each population with disabilities. We found significant differences between active and inactive people with PD only in 3 from 23 QoLI and only in one from 5 QoLD. On the other hand active people who are D/HH presented significant higher satisfaction with 11 QoLI and with 4 QoLD as well as significant higher level of overall QoL (p<.05) comparing inactive individuals with the same disability. This evaluation of the satisfaction with QoLI and QoLD by S.QUA.L.A. shows that it is a suitable tool to asses QoL in the population with different kinds of disabilities. The results of our study confirmed that regular participation in sport increases QoL, especially in people who are D/HH.
Źródło:
Physical Activity Review; 2016, 4; 62-71
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrotechnical tools and computer image analysis in assessing the quality of maize grain during storage
Narzędzia elektrotechniczne i komputerowa analiza obrazu w ocenie jakości ziarna kukurydzy podczas przechowywania
Autorzy:
Szwedziak, Katarzyna
Dolezal, Petr
Tabor, Sylwester
Ogrodniczek, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/11541883.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
quality analysis
grain warehouse
computer image analysis
electrical engineering
analiza jakości
magazyn zboża
komputerowa analiza obrazu
elektrotechnika
Opis:
The study of qualitative characteristics is becoming increasingly important due to determination of the purchase price and further use of seeds. An important problem of the modern sustainable agriculture is the production of seeds and products with appropriate quality parameters. The research carried out so far proves that the technology of harvesting, transport, and drying conditions as well as storage have an impact on the quality of seeds, determining their usefulness for the industry. The smallest irregularities can cause irreversible changes and significantly reduce the technological value of seeds and their processing products. The use of tools in the field of supporting electrical engineering enables detection and highlighting of image elements so that it becomes readable to the human eye. The aim of the research was to develop technology for evaluating grain in storage using electrotechnical tools and computer techniques.
Badanie cech jakościowych nabiera coraz większego znaczenia ze względu na ustalanie ceny skupu oraz ze względu na dalsze wykorzystanie nasion. Ważnym problemem współczesnego rolnictwa zrównoważonego jest produkcja nasion i produktów o odpowiednich parametrach jakościowych. Z dotychczasowych badań wynika, że technologia zbioru, warunki transportu i suszenia oraz przechowywania mają wpływ na jakość nasion, decydując o ich przydatności dla przemysłu. Najmniejsze nieprawidłowości mogą spowodować nieodwracalne zmiany i znacznie obniżyć wartość technologiczną nasion i produktów ich przetworzenia. Wykorzystanie narzędzi z zakresu wspomagania elektrotechniki pozwala na wykrywanie i podkreślanie elementów obrazu tak, aby stał się on czytelny dla ludzkiego oka. Celem badań było opracowanie technologii oceny ziarna w magazynie z wykorzystaniem narzędzi elektrotechnicznych i technik komputerowych.
Źródło:
Agricultural Engineering; 2023, 27, 1; 213--227
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A procedure for evaluating development potential in the area of production capacity
Procedura ewaluacji zdolności rozwojowej w zakresie potencjału wytwórczego przedsiębiorstwa
Autorzy:
Stabryła, Adam
Powiązania:
https://bibliotekanauki.pl/articles/415901.pdf
Data publikacji:
2013-12
Wydawca:
Małopolska Wyższa Szkoła Ekonomiczna w Tarnowie
Tematy:
development potential
measures of development potential
quality analysis
categorization
zdolność rozwojowa
wymiary zdolności rozwojowej
badania jakościowe
kategoryzacja
Opis:
Development potential understood in a general sense is a criterion for assessing a given system (companies, institutions or the national economy), measuring the possible achievement of projects at a high level of effectiveness and the ability to increase wealth and stimulate growth in various areas of activity (reflecting the value of strategic potential). The paper presents the characteristics of a company’s development potential and its measurement at the level of a multi-criteria analysis. This formula is presented in the context of qualitative research which is referred to different assessment criteria. Because of the diversity of primary criteria and sub-criteria, development potential estimations are based on aggregate qualification. It results from the fact that development potential can be considered from the perspective of partial components or as an aggregate. The author proposes IPXi as a measure for estimating development potential. It refers to a company’s production capacity which can be estimated at different qualitative levels: considerable potential, satisfactory potential and the lack of potential.
Ogólnie rozumiana zdolność rozwojowa to kryterium oceny danego systemu (przedsiębiorstwa, instytucji, gospodarki narodowej), będące miarą możliwości realizacji przedsięwzięć na poziomie wysokiej efektywności oraz wyrażające umiejętności pomnażania majątku i kreowanie postępu w różnych dziedzinach działalności. Podstawowy problem przedstawiony w artykule to charakterystyka zdolności rozwojowej przedsiębiorstwa oraz sposób jej pomiaru w ujęciu wielokryterialnym. Formuła ta została osadzona w kontekście badań jakościowych, odniesionych do rodzajowo odmiennych kryteriów oceny. Różnorodność kryteriów podstawowych i subkryteriów, które stosuje się w procedurze ewaluacji, sprawia, iż oszacowanie wartości zdolności rozwojowej przebiega na zasadzie kwalifikacji agregatowej. Takie podejście wynika z tego, iż zdolność rozwojowa może być rozpatrywana w postaciach cząstkowych (szczegółowych), jak również w formie agregatowej. Proponowaną formułą oszacowania zdolności rozwojowej jest indeks IPXi. Jego odniesienie stanowi potencjał wytwórczy przedsiębiorstwa.
Źródło:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie; 2013, 2(23); 191-204
1506-2635
Pojawia się w:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Importance of intellectual capital resources in rural development using the fsQCA method as an example
Autorzy:
Ziemiańczyk, U.
Krakowiak-Bal, A.
Powiązania:
https://bibliotekanauki.pl/articles/101183.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
intellectual capital
rural area development
fuzzy-set Quality Comparative Analysis
fsQCA
Opis:
The aim of this paper is to present the context of intellectual capital in rural area development using the example of fuzzy qualitative comparative analysis (fsQCA), which is one of the few methodological innovations of recent decades and which bridges the gap between quantitative and qualitative research. Based on surveys and interviews with local organizations, the study examined the relationships between the results of work and the composition of variables that constitute intellectual capital components. The results, related to intellectual capital, were divided into three variables representing human capital (education, experience-years of work, language skills), structural capital (presence of IT system in an organization, the number of procedures and processes) and relational capital (the number of cooperating organizations, the number of NGOs in the community, the level of trust in the manager). The research outcomes showed that different combinations of intellectual capital components led in practice to the same result; nevertheless, human capital was an indispensable element of the combination.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/3; 1799-1810
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of water scarcity on households’ livelihoods in Iwoye-Ketu Area of Ogun State, Nigeria
Wpływ deficytu wody na poziom życia w gospodarstwach domowych na obszarze Iwoye-Ketu w nigeryjskim stanie Ogun
Autorzy:
Aromolaran, Adetayo K.
Ademiluyi, Ibiyinka O.
Sotola, Abiodun E.
Wole-Alo, Felicia I.
Aromiwura, Oluwadamilola A.
Ogunsuyi, Olubukola E.
Powiązania:
https://bibliotekanauki.pl/articles/292360.pdf
Data publikacji:
2019
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Iwoye-Ketu
livelihoods
perceived effects
water quality analysis
water scarcity
water sources
analiza jakości wody
deficyt wody
odczuwane skutki
poziom życia
źródła wody
Opis:
Water is an essential commodity which affects life and livelihoods in the universe. This study examined perceived effect of water scarcity on livelihoods in Iwoye-Ketu, Ogun State. Random sampling was used to select 80 rural households and water samples for the study. Data collected were analysed using descriptive, inferential and laboratory analyses. Findings showed that the mean age of respondents was 38 years with an average household size of four persons. The major sources of water were boreholes (97.5%) and rainwater (90.0%), the average trekking time to the water source was 24 minutes and the households requires an average of 162 litres of water per day. Water analysis’ result showed that the water has pH (6.87), total dissolved solids (0.175 mg∙dm–3), temperature (29.9°C) and turbidity (0.6 FTU). The major causes of water scarcity include insufficient rainfall (97.5%), increased sunlight intensity (97.5%), pollution of water sources (95.0%) and increased population (93.8%). About 60% of them perceived water scarcity to have a negative effect on their livelihoods. Correlation analysis shows that there is a significant relationship between usage of water (r = 0.370, p < 0.01) and perceived effect of water scarcity. It was concluded that water available for household use is not sufficient, although it is safe but contain some elements which are not of World Health Organization standard for good potable water. It is recommended that the community should build a hub for water collection and distribution close to the village centre and the government should provide water infrastructures to increase the supply of potable water.
Woda jest podstawowym dobrem, które wpływa na życie i warunki życia na świecie. W przedstawionej pracy badano wpływ deficytu wody na poziom życia w Iwoye-Ketu w stanie Ogun. Do badań losowo wybrano 80 wiejskich gospodarstw i próby wody. Zebrane dane analizowano za pomocą metod opisowych, wnioskowania i metod laboratoryjnych. Średni wiek respondentów wynosił 38 lat, a średnia wielkość gospodarstwa – 4 osoby. Głównym źródłem wody były studnie wiercone (97,5%) i opady deszczu (90,0%). Średni czas dojścia do źródła wody wynosił 24 minuty, a gospodarstwa zużywały średnio 162 dm3 wody na dzień. Woda miała pH 6,87, sumę substancji rozpuszczonych 0,175 g∙dm–3, temperaturę 29,9°C i mętność 0,6 FTU. Do głównych przyczyn niedostatku wody zaliczano niewystarczające opady (97,5%), silne nasłonecznienie (97,5%), zanieczyszczenie źródeł wody (95,0%) i przeludnienie (93,8%). Około 60% respondentów uważało, że niedostatek wody wywiera ujemny wpływ na ich poziom życia. Analiza korelacji wykazała, że istnieje istotna zależność (r = 0,370, p < 0,01) między zużyciem wody a odczuciem negatywnego wpływu jej braku. Stwierdzono, że woda jest dostępna gospodarstwom w niedostatecznej ilości i choć bezpieczna, to zawiera pewne składniki, które nie spełniają norm Światowej Organizacji Zdrowia ustalonych dla wody pitnej. Zaleca się, aby lokalna społeczność zbudowała miejsce gromadzenia i dystrybucji wody blisko centrum wsi, a rząd powinien zapewnić infrastrukturę w celu poprawy zaopatrzenia w wodę pitną.
Źródło:
Journal of Water and Land Development; 2019, 43; 9-18
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of groundwater quality in the lower Soummam Valley, North-East of Algeria
Autorzy:
Ghodbane, Messaoud
Benaabidate, Lahcen
Boudoukha, Abderrahmane
Gaagai, Aissam
Adjissi, Omar
Chaib, Warda
Aouissi, Hani Amir
Powiązania:
https://bibliotekanauki.pl/articles/2174331.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Algeria
analysis of groundwater quality
hydrochemical data
multivariate statistical analysis
Soummam Valley
Opis:
Analysis of groundwater quality in the alluvial aquifer of the lower Soummam Valley, North-East of Algeria, was realised through the application of multivariate statistical methods: hierarchical cluster analysis (HCA) in Q and R modes, factorial correspondence analysis (FCA), and principal component analysis (PCA), to hydrochemical data from 51 groundwater samples, collected from 17 boreholes during periods of June, September 2016 and March 2017. The objectives of this approach are to characterise the water quality and to know the factors which govern its evolution by processes controlling its chemical composition. The Piper diagram shows two hydrochemical facies: calcium chloride and sodium bicarbonate. Statistical techniques HCA, PCA, and FCA reveal two groups of waters: the first (EC, Ca2+, Mg2+, Cl-, SO42- and NO3-) of evaporitic origin linked to the dissolution processes of limestone rocks, leaching of saliferous soils and anthropogenic processes, namely contamination wastewater and agricultural activity, as well marine intrusion; and the second group (Na+, K+, and HCO3-) of carbonated origin influenced by the dissolution of carbonate formations and the exchange of bases. The hermodynamic study has shown that all groundwater is undersaturated with respect to evaporitic minerals. On the other hand, it is supersaturated with respect to carbonate minerals, except for water from boreholes F9, F14, and F16, which possibly comes down to the lack of dissolution and arrival of these minerals. The results of this study clearly demonstrate the utility of multivariate statistical methods in the analysis of groundwater quality.
Źródło:
Journal of Water and Land Development; 2022, 54; 1--12
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recent state and trends in breeding of winter rapeseed in the Czech Republic
Autorzy:
Kucera, V.
Vyvadilova, M.
Powiązania:
https://bibliotekanauki.pl/articles/834160.pdf
Data publikacji:
2001
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
oil seed
winter oilseed rape
doubled haploid
cytoplasmic male sterility
oilseed rape
Brassica napus
stress resistance
Czech Republic
hybrid
yellow seed
molecular marker
quality analysis
rapeseed
Źródło:
Rośliny Oleiste - Oilseed Crops; 2001, 22, 1
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data mining system for air quality monitoring networks
Autorzy:
Czechowski, P.
Badyda, A.
Majewski, G.
Powiązania:
https://bibliotekanauki.pl/articles/204820.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
air pollutants
data quality analysis
data mining
estimation
exploratory methods
harmonic
principal component analysis
statistical tests outliers
influential
leverage observations
analytical software system
programming
Eco Data Miner
EDM
Winsorized mean
Cook
Mahalanobis distance
DFITS
COVRATIO
Opis:
The use of quantitative methods, including stochastic and exploratory techniques in environmental studies does not seem to be sufficient in practical aspects. There is no comprehensive analytical system dedicated to this issue, as well as research regarding this subject. The aim of this study is to present the Eco Data Miner system, its idea, construction and implementation possibility to the existing environmental information systems. The methodological emphasis was placed on the one-dimensional data quality assessment issue in terms of using the proposed QAAH1 method - using harmonic model and robust estimators beside the classical tests of outlier values with their iterative expansions. The results received demonstrate both the complementarity of proposed classical methods solution as well as the fact that they allow for extending the range of applications significantly. The practical usefulness is also highly significant due to the high effectiveness and numerical efficiency as well as simplicity of using this new tool.
Źródło:
Archives of Environmental Protection; 2013, 39, 4; 123-147
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of selected technologies of precious metal recovery processes
Autorzy:
Sitko, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/2064852.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
plant
recovery
analysis
quality
Opis:
The article presents the technologies of obtaining precious metals as a by-product in the processing of copper concentrates in KGHM POLSKA MIEDŹ SA and in the processing of zinc and lead concentrates in Huta Cynku "MIASTECZKO ŚLĄSKIE". Discussed technologies for recovery of silver from secondary raw materials such as: used silver catalysts, scrapped electronic devices, defective transistors, scrap of silver-plated glasses, used solutions used for processing photosensitive materials are discussed. Jewellery and tableware and technical coatings in electronics and electrical engineering. The high reflectivity of the light rays from the silver surface was used in the production of special reflectors and mirrors, and chemical resistance in the construction of apparatus (such as equipment resistant to molten hydroxide alkali metals).
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 72--80
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of the heated water discharge on the water quality in a shallow lowland dam reservoir
Autorzy:
Mazierski, Jerzy
Kostecki, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/1845417.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
water quality
factor analysis
multivariate statistical analysis
Opis:
The purpose of the work was to determine the relationship between the of the water quality parameters in an artificial reservoir used as cooling ponds. Factor analysis were applied to analyze eighteen physico- -chemical parameters such as air and water temperature, dissolved oxygen concentration, visibility of the Secchi disk, concentrations of total nitrogen, ammonium, nitrate, nitrite, total phosphorus, phosphate, concentrations of calcium, magnesium, chlorides, sulfates and total dissolved salts, pH, chemical oxygen demand and electric conductivity from 2002-2019 to investigated cooling water discharge. Exploratory factor analysis allowed identified four factors were obtained from 54.1% (in discharge zone) to 56.7% (in dam zone). In discharge and pelagic zones confirmatory factor analysis showed that four latent variables: salinity, temperature, nitrogen and phosphorus provide good fit, but in the dam zone the better fit was obtained for the latent variables salinity, temperature, nutrient and eutrophic. Correlations between latent variables temperature, nitrogen, phosphorus or nutrient and eutrophic show a significant effect of temperature on the transformation of nitrogen and phosphorus compounds.
Źródło:
Archives of Environmental Protection; 2021, 47, 2; 29-46
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 205

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