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    Wyświetlanie 1-11 z 11
    Tytuł:
    Prospects for using wastewater from a farm for algae cultivation: The case of Eastern Colombia
    Autorzy:
    Urbina-Suarez, Nestor Andres
    Barajas-Solano, Andres Fernando
    Garcia-Martinez, Janet Bibiana
    Lopez-Barrera, German Luciano
    González-Delgado, Angel Dario
    Powiązania:
    https://bibliotekanauki.pl/articles/2073734.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    biological treatment
    characterisation
    microalgae
    monitoring
    nutrient wastewater
    Opis:
    In recent years, the technical and economic feasibility of using microalgae and cyanobacteria has been explored for the removal and exploitation of domestic, agricultural and industrial residual effluents with high C, N and P compounds content. To contribute to the understanding of the process and its technical viability for microalgae growth, the article discusses monitoring, flow determination, and physicochemical characteristics of two types of effluents generated in an experimental farm located in the east of Colombia, before (R1) and after biological treatment (R2). In general, the results showed the reduction of different parameters, such as total dissolved solids (TDS), hardness, salinity and phosphates after treatment with activated sludge. However, the conductivity value obtained in R1 and R2 showed the presence of a pollutant load. These findings can be attributed to the highest concentration of fats and oils in the water during early hours of the day. Finally, although the concentration of nitrates increased from 46.63 to 225.21 mg∙dm-3 and phosphate decreased slightly from 9.65 to 6.21 mg∙dm-3,no inhibition was generated in the microalgae, as evidenced in the growth of the microalgal biomass in effluents after nitrate and phosphate removal above 80%.
    Źródło:
    Journal of Water and Land Development; 2022, 52; 172--179
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorbent Characterization from Cocoa Shell Pyrolysis (Theobroma cacao L) and its Application in Mercury Ion Reduction
    Autorzy:
    Nursiah, Cut
    Desvita, Hera
    Elviani, Elviani
    Farida, Nurlia
    Muslim, Abrar
    Rosnelly, Cut Meurah
    Mariana, Mariana
    Suhendrayatna, Suhendrayatna
    Powiązania:
    https://bibliotekanauki.pl/articles/24202895.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    characterisation
    pyrolysis
    adsorbent
    cocoa shell
    mercury ion
    Opis:
    In this paper, we describe the characterization and application of adsorbent derived from the pyrolysis of cocoa shells, which is a natural source of adsorbent materials. The adsorbent that was used in this experiment is an environmentally friendly adsorbent that was prepared by the pyrolysis of cocoa shells. For 1.5 hours, the pyrolysis process was carried out at temperatures ranging from 300 to 380 °C. The adsorbent was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and analysis with an X-ray diffraction (XRD) analyzer. Water-ash content and iodine absorption capacity were also determined in accordance with SNI 06-3730-1995. At a contact time of 90 minutes, the adsorption capacity of mercury ions was found to be 0.106 mg/gram. In this study, the adsorption of mercury ions with the adsorbent followed pseudo-second-order models with an R2 value of 0.9929.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 6; 366--375
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Założenia kierunkowe Systemu Infrmacji Przestrzennej w Polsce
    Autorzy:
    Bielecka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/1050700.pdf
    Data publikacji:
    2001
    Wydawca:
    Stowarzyszenie Geodetów Polskich
    Tematy:
    System Informacji Przestrzennej
    użytkownik
    charakterystyka
    Spatial Information System
    user
    characterisation
    Opis:
    Artykuł przedstawia najważniejsze założenia Systemu Informacji Przestrzennej w Polsce opracowane w trakcie prac nad projektem badawczym zamawianym „ Koncepcja SIP w Polsce ". Projekt zamowiony przez MSWiA realizowany byl przez Instytut Geodezji i Kartografii w kooperacji z Politechniką Warszawską, AGH, Uniwersytetem WarmińskoMazurskim i Uniwersytetem Śląskim vv latach 1998-2001.
    Źródło:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2001, 11; 23-28
    2083-2214
    2391-9477
    Pojawia się w:
    Archiwum Fotogrametrii, Kartografii i Teledetekcji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relations for moments of generalised order statistics based on Weibull–G family of distributions
    Autorzy:
    Athar, Haseeb
    Alharbi, Yousef F.
    Fawzy, Mohamad A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2204086.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    generalized order statistics
    order statistics
    record values
    expectation identities
    characterisation
    Opis:
    The Weibull distribution is one of the important distributions used in reliability theory and life-testing experiments. The generalised versions of the Weibull distribution give a more flexible model for these studies. The Weibull–G family of distributions is one of the extended versions extensively studied. In this paper, we have studied moments properties of generalised order statistics for the said distribution in terms of a single moment, product moments and characterisation. Several examples and special cases are presented. The results can be applied to all distributions belonging to this family.
    Źródło:
    Operations Research and Decisions; 2022, 32, 4; 17--31
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jeux et hasard dans l’écriture de Patrick Modiano
    Games and Chance in Patrick Modiano’s Writing
    Autorzy:
    Grenaudier-Klijn, France
    Powiązania:
    https://bibliotekanauki.pl/articles/24202491.pdf
    Data publikacji:
    2023-12-30
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II. Wydawnictwo Werset
    Tematy:
    Patrick Modiano
    jeux
    hasard
    caractérisation
    indétermination
    games
    chance
    characterisation
    indeterminacy
    Opis:
    De nombreux romans de Patrick Modiano font intervenir le motif du jeu – prédicat et espace – dans la narration, aux niveaux actoriel, thématique et structural. L’introduction de cet élément mineur – il ne s’agit pas d’un thème – nous renseigne toutefois autant sur la technique romanesque employée par Modiano que sur les considérations métaphysiques sous-tendant son écriture. Une lecture attentive centrée sur divers épisodes articulés autour du jeu nous permet ainsi de mieux comprendre les modalités adoptées par l’écrivain dans l’élaboration de ses personnages et dans l’architecture de ses récits. L’insertion du motif du jeu nous permet en outre d’identifier et d’analyser la valeur accordée au hasard et à   l’indéterminabilité sous toutes ses formes dans le récit modianien, à partir duquel se déploie une véritable métaphysique, voire une éthique, de l’indétermination.
    Many of Patrick Modiano’s novels involve the motif of the game – predicate and space – in the narration, at characterization, thematic and structural levels. The introduction of this minor element – it never reaches the level of a trope – nonetheless informs us both about the novelistic techniques employed by Modiano and about the metaphysical considerations underpinning his writing. As such, a close reading of various episodes articulated around the motif of the game allows us to better understand the methods adopted by the novelist in the development of his characters and in the architecture of his texts. Furthermore, the insertion of the motif of the game allows us to identify and analyse the value given to chance and indeterminacy in all its forms in the Modianian novel, from which a true metaphysics, if not an ethics, of indeterminacy, can in turn be deployed.
    Źródło:
    Quêtes littéraires; 2023, 13; 184-194
    2084-8099
    2657-487X
    Pojawia się w:
    Quêtes littéraires
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of Packing Density of M30 Concrete with Steel Slag as Coarse Aggregate Using Fuzzy Logic
    Autorzy:
    Arivoli, M.
    Malathy, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/353804.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    steel slag
    characterisation
    packing density
    fuzzy system
    compressive strength
    bulk density
    Opis:
    Concrete plays a vital role in the design and construction of the infrastructure. To meet the global demand of concrete in future, it is becoming a challenging task to find suitable alternatives to natural aggregates. Steel slag is a by-product of steel making process. The steel slag aggregates are characterized by studying particle size and shape, physical and chemical properties, and mechanical properties as per IS: 2386-1963. The characterization study reveals the better performance of steel slag aggregate over natural coarse aggregate. M30 grade of concrete is designed and natural coarse aggregate is completely replaced by steel slag aggregate. Packing density of aggregates affects the characteristics of concrete. The present paper proposes a fuzzy system for concrete mix proportioning which increases the packing density. The proposed fuzzy system have four sub fuzzy system to arrive compressive strength, water cement ratio, ideal grading curve and free water content for concrete mix proportioning. The results show, the concrete mix proportion of the given fuzzy model agrees with IS method. The comparison of results shows that both proposed fuzzy system and IS method, there is a remarkable increase in compressive strength and bulk density, with increment in the percentage replacement of steel slag.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 3; 1903-1913
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterisation of some generalised continuous distributions by doubly truncated moments
    Autorzy:
    Athar, Haseeb
    Ahsanullah, Mohammad
    Ali, Mohd. Almech
    Powiązania:
    https://bibliotekanauki.pl/articles/2204096.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    truncated moment
    characterisation
    probability distribution
    Weibull
    power function
    Frechet
    Pareto
    Lindley
    Opis:
    The characterisation of probability distribution plays an important role in statistical studies. There are various methods of characterisation available in the literature. The characterisation using truncated moments limits the observations; hence, researchers may save time and cost. In this paper, the characterisation of three general forms of continuous distributions based on doubly truncated moments has been studied. The results are given simply and explicitly. Further, the results have been applied to some well-known continuous distributions.
    Źródło:
    Operations Research and Decisions; 2023, 33, 1; 1--19
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Characterisation of Joseph by Matthew (Matt 1–2; 13:55)
    Autorzy:
    Mielcarek, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/20679080.pdf
    Data publikacji:
    2023-04-26
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II
    Tematy:
    Narrative by Matthew 1–2
    Infancy Narrative
    Joseph
    characterisation
    theology in Matthew
    Opis:
    The article presents the figure of Joseph and his place in the narrative by the first evangelist in Matt 1–2. Apart from the arguments for the unifying function of Mary’s spouse in the whole Infancy Narrative, the most important features of Joseph highlighted by Matthew are emphasised. Those include the attitude of the righteous man, the fact of belonging to the royal family of King David, the bond and similarity to the actions of the patriarchs, as well as the silent and ascetic nature of the spouse and parent. Despite many similarities to the Lukan narrative, the first evangelist stresses different aspects in his characterisation of Joseph. Using the tools proposed by Cornelis Bennema, the author of the paper also assesses the degree of characterisation of the person under study, his role in the narrative and his representative value for the modern reader.
    Źródło:
    The Biblical Annals; 2023, 13, 2; 335-362
    2083-2222
    2451-2168
    Pojawia się w:
    The Biblical Annals
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exploring the characterization, liberation and flotation response of a Nigerian low-grade copper ore
    Autorzy:
    Nheta, Willie
    Ola-Omole, Omoyemi O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2201433.pdf
    Data publikacji:
    2023
    Wydawca:
    Główny Instytut Górnictwa
    Tematy:
    chalcopyrite
    characterisation
    liberation
    flotation grade
    recovery
    chalkopiryt
    charakterystyka
    uwalnianie
    stopień flotacji
    odzysk
    Opis:
    This study explores the characterization, liberation and flotation response of low-grade copper ore from Anka area, Zamfara state Nigeria. The ore was crushed, milled and sieved in accordance with BS 410 standard. It was characterized with XRD, XRF, SEM-EDS and AAS. Froth flotation was carried out with varying %solids, pH, retention time and collector dosages using SEX and sodium oleate. Particle size distribution of the ore shows its economic liberation between -150 and +106 µm while 80% passing corresponds to 175.7 µm using the Gaudin Schuhmann equation. However, according to metallurgical balance calculation, 63 µm proved to have the highest metal content. Identified peaks of the copper ore by XRD revealed the presence of pyrite and chalcopyrite as the major mineral content at 47 and 36%, respectively, while other elements were present in traces. XRF shows Fe and Cu as the major elements and others in traces. Morphology, according to SEM-EDS, revealed that Fe is the major impurity while the presence of Cu and S confirmed chalcopyrite is present in the ore minerals. AAS shows an average of 25.87% Cu and 32% Fe in the ore. Optimum recoveries of copper were recorded at 30% solids, pH of 8, 30 minutes retention time. The highest recovery of 95.94% was recorded with SEX at 0.25 mol/dm3, while recoveries were lower with PAX, the highest recovery being 33% at 0.20 mol/dm3. 0.25 mol/dm3 of SEX recorded the highest yield and enrichment ratio of 40.38 and 2.38, respectively.
    Źródło:
    Journal of Sustainable Mining; 2023, 22, 1; 20--32
    2300-1364
    2300-3960
    Pojawia się w:
    Journal of Sustainable Mining
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania nad możliwością zagospodarowania odpadów z procesu flotacji rud cynku i ołowiu
    Investigations into the possibility of managing waste from the process of zinc and lead ores flotation
    Autorzy:
    Lipowska, B.
    Wojsa, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/392514.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
    Tematy:
    ruda cynku i ołowiu
    odpad poflotacyjny
    charakterystyka
    zagospodarowanie
    zinc and lead ore
    post-flotation waste
    characterisation
    management
    Opis:
    W pracy podjęto próbę określenia możliwości zestalenia odpadów z procesu flotacji rud cynku i ołowiu z jednoczesnym trwałym związaniem lub usunięciem zawartych w nich szkodliwych związków. Do zestalania wykorzystano własności wiążące składników odpadu: wiązanie za pomocą cementu Sorela oraz proces karbonizacji wodorotlenków wapnia i magnezu. Zestalany odpad poddawano granulacji lub formowano z niego kształtki na prasie hydraulicznej. Najlepsze wyniki uzyskano, formując odpowiednio spreparowany odpad pod ciśnieniem 30 MPa i poddając go działaniu CO2 w podwyższonej temperaturze. Tak zagęszczony materiał wykazuje wytrzymałość na ściskanie nie mniejszą niż 5 MPa i nie ulega rozmywaniu w wodzie. W dodatkowej obróbce termicznej odpadu toksyczne składniki zostają unieszkodliwione poprzez rozkład lub przemiany w formy nierozpuszczalne w wodzie.
    The aim of the research presented in this work was to establish the posssibilities of solidyfying waste from the process of zinc and lead ores' flotation with a simultaneous permanent binding or removal of the harmful compounds they contain. Solidifying properties of waste components were used, in particular binding by means of Sorel cement. and the process of calcium and magnesium hydroxides' carbonisation. The solidified waste was subjected to granulation or formed into shapes in hydraulic press. The best results were obtained when the appropriately prepared waste was subjected to pressure of 30 MPa and exposed to CO2 in an increased temperature. So condensed material is characterised by compression strength no lower than 5 MPa and does not wash in water. Owing to additionally applied thermal treatment of waste the toxic components are made harmless through decomposition or transformation into forms insoluble in water.
    Źródło:
    Prace Instytutu Szkła, Ceramiki, Materiałów Ogniotrwałych i Budowlanych; 2008, R. 1, nr 1, 1; 85-92
    1899-3230
    Pojawia się w:
    Prace Instytutu Szkła, Ceramiki, Materiałów Ogniotrwałych i Budowlanych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vom rechten Handeln in rechtloser Zeit – Ernst Wiecherts Novelle „Der Richter”
    Acting rightly in times of lawlessness – Ernst Wiechert’s novella “The judge”
    Autorzy:
    Büttner, Matthias
    Powiązania:
    https://bibliotekanauki.pl/articles/967459.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Ernst Wiechert
    novella
    National Socialism
    ideological delu
    law and justice
    moral integrity
    guilt
    dramatic structure
    characterisation
    humanism based on Christian ideals
    Opis:
    The novella "The Judge" by Ernst Wiechert gives testimony to the poet’s critical analysis and examination of the immediate National Socialist past and, at the same time, tries to provide some forward-looking re-orientation in terms of a comprehensive humanism based on Christian ideals. Wiechert’s narrative follows a dramatic structure in accordance with the tragedies of Classical Greek Antiquity. Faced with an existential crisis, the title character has to prove his moral integrity and steadfastness. Deluded by the pervasive Nazi ideology, the judge’s son goes astray by killing a former friend but finally, thanks to his father’s cautious, gentle guidance, finds his way back. At the end of the novella the son even atones for his wrongs while his father, an unfaltering representative and unswerving advocate of law and justice, resigns from his office in the face of the lawlessness he has experienced under the Nazi terror regime. Apart from analysing the plot of Wiechert’s novella, this study also examines the clearly outlined characters as well as the complex theme of guilt, repentance and forgiveness. Finally, the article focuses on the author’s intention of taking part in the social and political discourse of post-war Germany by conveying his message of humanity and moral integrity.
    Źródło:
    Acta Universitatis Lodziensis. Folia Germanica; 2015, 11; 157-168
    2449-6820
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Germanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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