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    Tytuł:
    Effect of Sewage Sludge and Flotation Lime on Formation of Available Forms of Phosphorus, Potassium and Magnesium in Soil
    Oddziaływanie osadu ściekowego i wapna poflotacyjnego na kształtowanie się przyswajalnych form fosforu, potasu i magnezu w glebie
    Autorzy:
    Kaczor, A.
    Paul, G.
    Brodowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/388091.pdf
    Data publikacji:
    2009
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    osad ściekowy
    wapno poflotacyjne
    fosfor przyswajalny
    potas przyswajalny
    magnez przyswajalny
    sewage sludge
    flotation lime
    available phosphorus
    available potassium
    available magnesium
    Opis:
    The influence of sewage sludge and flotation lime applied on three levels on the changes in the content of available forms of P, K. and Mg was evaluated in the light soil from the vicinity of a former sulphur mine. The two-year pot experiment, which was set up using complete randomization method, was conducted on soil material with the granulometric composition of light loamy sand. Oat and spring rape were the test plants in the experiment. Prior to the experiment the soil was characterized by a strong acid reaction, low content of available phosphorus and potassium and very low content of available magnesium. Obtained results show that experimental factors clearly differentiated the content of available forms of phosphorus, potassium and magnesium in soil. The content of phosphorus and magnesium in the test soil increased as the result of sewage sludge application and an opposite effect was observed in case of available potassium. By optimization of soil reaction, liming indirectly affected soil fertility in the available forms of analyzed nutrients.
    Oceniono wpływ osadu ściekowego oraz wapna poflotacyjnego, zastosowanych na trzech poziomach, na zmiany zawartości przyswajalnych form P, K i Mg w glebie lekkiej pochodzącej z okolic byłej kopalni siarki. Przeprowadzono dwuletni eksperyment wazonowy założony na materiale glebowym o składzie granulometrycznym piasku gliniastego, metodą kompletnej randomizacji. W doświadczeniu roślinami testowymi były owies i rzepak jary. Gleba przed doświadczeniem charakteryzowała się bardzo kwaśnym odczynem, małą zawartością przyswajalnego fosforu i potasu oraz bardzo małą zawartością przyswajalnego magnezu. Uzyskane wyniki wskazują, że czynniki doświadczalne widocznie zróżnicowały zawartość przyswajalnych form fosforu, potasu i magnezu w glebie. W efekcie stosowania osadu, zwiększyła się zawartość fosforu i magnezu w glebie testowej, a przeciwny skutek obserwowano w przypadku potasu. Wapnowanie, poprzez optymalizację odczynu gleby, wpływało pośrednio na jej zasobność w przyswajalne formy analizowanych składników pokarmowych.
    Źródło:
    Ecological Chemistry and Engineering. A; 2009, 16, 10; 1305-1309
    1898-6188
    2084-4530
    Pojawia się w:
    Ecological Chemistry and Engineering. A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in Values of Basic Indicators of Soil Acidification as the Effect of Application of Sewage Sludge and Flotation Lime
    Zmiany wartości podstawowych wskaźników zakwaszenia gleby w efekcie stosowania osadu ściekowego i wapna poflotacyjnego
    Autorzy:
    Kaczor, A.
    Paul, G.
    Brodowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/388670.pdf
    Data publikacji:
    2009
    Wydawca:
    Towarzystwo Chemii i Inżynierii Ekologicznej
    Tematy:
    zakwaszenie gleby
    osad ściekowy
    wapno poflotacyjne
    odczyn gleby
    kwasowość wymienna
    glin ruchomy
    acidification
    sewage sludge
    flotation lime
    soil reaction
    exchange acidity
    mobile aluminium
    Opis:
    The variability of selected factors of soil acidification: soil reaction (pH), exchange acidity and mobile aluminium were analyzed under the conditions of sewage sludge and flotation lime influence. The research was based on a two-year strict pot experiment, which was set up using complete randomization method, on soil materiał obtained from the vicinity of a sulphur mine. Prior to the experiment the soil was characterized by a very acidic reaction, an exchange acidity (Hex) value of 19.92 mmol(+) o kg^-1, mobile aluminium content of 8.60 mmol(+) o kg^-1, and moreover, by a low content of available phosphorus and potassium, very low content of available magnesium and high content of S-SO4. The results obtained show that applied experimental factors (sewage sludge, flotation lime) positively influenced the changes in the analyzed soil properties. Under the influence of liming, the value of soil pH was changed distinctly and, in consequence, the soil reaction was changed from very acidic to acidic or slightly acidic. Moreover, soil liming caused a decrease in the values of exchange acidity and mobile aluminium in the examined soil. The influence of sewage sludge on the analyzed soil properties, in most objects, was also beneficial but less distinct than in the case of flotation lime.
    Przeanalizowano wpływ osadu ściekowego oraz wapna poflotacyjnego na zmiany w wartością wybranych wskaźników zakwaszenia gleby: odczynu (pH), kwasowości wymiennej (w) i glinu ruchomego. Badania prowadzono w ścisłym dwuletnim doświadczeniu wazonowym, które założono metodą kompletnej randomizacji, na glebie pochodzącej z okolic kopalni siarki. Gleba przed doświadczeniem charakteryzowała się bardzo kwaśnym odczynem (pH), wartością kwasowości wymiennej wynoszącej 19,92 mmol(+) o kg^-1 oraz zawartością glinu ruchomego - 8,60 mmol(+) o kg^-1, a ponadto małą zawartością przyswajalnego fosforu i potasu, bardzo małą zawartością przyswajalnego magnezu oraz dużą zawartością S-S04. Uzyskane wyniki wskazują, że zastosowane w doświadczeniu czynniki zmienne (wapno poflotacyjne, osad ściekowy) korzystnie wpłynęły na zmiany analizowanych właściwości gleby. Pod wpływem wapnowania wyraźnemu podwyższeniu uległa wartość pH gleby, w wyniku czego odczyn z bardzo kwaśnego zmienił się w kwaśny lub lekko kwaśny. Ponadto wapnowanie spowodowało zmniejszenie wartości kwasowości wymiennej i zawartości glinu ruchomego w badanej glebie. Wpływ osadu ściekowego na analizowane właściwości glebowe był również w większości obiektów korzystny, jednakże zmiany ich wartości wywołane tym czynnikiem były mniej widoczne.
    Źródło:
    Ecological Chemistry and Engineering. A; 2009, 16, 5/6; 583-588
    1898-6188
    2084-4530
    Pojawia się w:
    Ecological Chemistry and Engineering. A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance Budgeting as an International Approach to Budget Regulation
    Autorzy:
    Paul, Aleksei G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1368212.pdf
    Data publikacji:
    2020-09-29
    Wydawca:
    Uniwersytet Gdański. Centrum Prawa Samorządowego i Prawa Finansów Lokalnych
    Tematy:
    performance budgeting
    medium-term fi nancial planning
    budget expenditure
    state
    program
    agency target program.
    Opis:
    The paper discusses introduction of multiannual budgetary planning and transition to performance budgeting in the Russian Federation. The author describes some results, problems and the future of the reform. The paper highlights implementation of international experience in the process of the reform. Performance budget is applied in the practice of many countries (the United States, New Zealand, the United Kingdom, the Netherlands, France, Germany, Slovakia). The Russian Federation has also taken ideas of the new system of budget planning. In the middle of 2000s the Russian Government approved the Conception concerning the reform of budget process in the Russian Federation for the period 2004-2006. It was the start of the reform. However, more than 15 years after the beginning of the reforms the Russian budget legislation and practice are in the process of improving. Foreign and international achievements in the fi eld of performance budgeting could be helpful for Russian budget law. Key words: performance budgeting, medium-term fi nancial planning, budget expenditure, state program, agency target program.
    Źródło:
    Financial Law Review; 2020, 19, 3; 69-80
    2299-6834
    Pojawia się w:
    Financial Law Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Budget law in the system of Russian law
    Autorzy:
    Paul, Aleksei G.
    Powiązania:
    https://bibliotekanauki.pl/articles/643545.pdf
    Data publikacji:
    2018-07-26
    Wydawca:
    Uniwersytet Gdański. Centrum Prawa Samorządowego i Prawa Finansów Lokalnych
    Opis:
    The main aim of the paper is to define place of budget law in the system of Russian law as well as boundaries of budget law legal scope. Author tries to justify that budget law is a sub-branch of financial law. It regulates just some groups of relations concerning collecting of  budget revenues and  implementation of  budget expenditures. Conclusions of the paper are based on researches of soviet and modern scientists; court practice is used as well.
    Źródło:
    Financial Law Review; 2018, 9, 1; 1-9
    2299-6834
    Pojawia się w:
    Financial Law Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Budget law in the system of Russian law
    Autorzy:
    Paul, Aleksei G.
    Powiązania:
    https://bibliotekanauki.pl/articles/643566.pdf
    Data publikacji:
    2018-07-26
    Wydawca:
    Uniwersytet Gdański. Centrum Prawa Samorządowego i Prawa Finansów Lokalnych
    Opis:
    The main aim of the paper is to define place of budget law in the system of Russian law as well as boundaries of budget law legal scope. Author tries to justify that budget law is a sub-branch of financial law. It regulates just some groups of relations concerning collecting of  budget revenues and  implementation of  budget expenditures. Conclusions of the paper are based on researches of soviet and modern scientists; court practice is used as well.
    Źródło:
    Financial Law Review; 2018, 9, 1; 1-9
    2299-6834
    Pojawia się w:
    Financial Law Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Legal Regulation of Public Expenditures in the Russian Federation
    Autorzy:
    Paul, Aleksei G.
    Powiązania:
    https://bibliotekanauki.pl/articles/643504.pdf
    Data publikacji:
    2018-12-17
    Wydawca:
    Uniwersytet Gdański. Centrum Prawa Samorządowego i Prawa Finansów Lokalnych
    Opis:
    Budget expenditures are a sum of money, which is paid from budget on non-repayable conditions. They are based on expenditure obligations that are determined by different branches of law. Budget law should secure so that budgetary appropriations for financing of all expenditure obligations should be included in law on budget. Budget expenditure planning transferred from line-item budgeting to programme budgeting. Budget Code provides budgeting for next fiscal year and a two-year planned period. All levels of power should follow a principle of treasury-based budget execution and a principle of single budget account. Regional and local authorities should establish personal accounts of their budgets in the Federal Treasury that establish regional and local budget accounts in the Central Bank.
    Źródło:
    Financial Law Review; 2017, 2, 4; 1-6
    2299-6834
    Pojawia się w:
    Financial Law Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nonlinear Ion-Acoustic Waves in Gravitating Dusty Plasma with Non-Isothermal Electrons and Fluctuating Dust Charges
    Autorzy:
    Paul, S.
    Pakira, G.
    Paul, B.
    Ghosh, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1419744.pdf
    Data publikacji:
    2012-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.27.Lw
    52.35.Fp
    04.40.-b
    Opis:
    Using the reductive perturbation method a theoretical infrastructure has been developed to study the nonlinear propagation of ion-acoustic waves in self-gravitating multicomponent dusty plasma consisting of positive ions, non-isothermal electrons and negatively charged warm dust particles with fluctuating dust charges and drifting motion. It is shown that instead of coupled nonlinear equations as obtained by earlier authors the nonlinear propagation of ion-acoustic waves in such a plasma can be described by an uncoupled third order partial differential equation which is a modified form of the Korteweg-de Vries equation. From this equation, quasi-soliton solution is obtained for the ion-acoustic wave. The effects of non-isothermal electrons, gravity, dust charge fluctuations and drifting motion on the ion-acoustic solitary waves are discussed with application in astrophysical contexts. The importance of the model considered here has also been pointed out.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 1; 116-121
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Serum fluoride levels in ambulance staff after commencement of methoxyflurane administration compared to meta-analysis results for the general public
    Autorzy:
    Allison, Serah J.
    Docherty, Paul D.
    Pons, Dirk
    Chase, James G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2093863.pdf
    Data publikacji:
    2021-12-13
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    meta-analysis
    prospective studies
    fluorides
    ambulances
    fluoride poisoning
    methoxyflurane
    Opis:
    ObjectivesAmbulance officers administering methoxyflurane as an inhalational analgesic may be exposed to trace vapor. Fluoride is a methoxyflurane metabolite, and has been associated with acute renal failure in anesthesia patients and skeletal fluorosis with chronic elevated serum levels from other sources. However, there has been no direct measurement of serum fluoride in occupationally exposed ambulance officers. Thus, this study directly measures serum fluoride over a prolonged period in order to determine renal toxic and skeletal fluorosis risk to ambulance officers who are administering methoxyflurane.Material and MethodsSerum inorganic fluoride concentrations were measured in a prospective observational study of 12 emergency medical technicians (EMTs). The study took 7 serum fluoride measurements over 24 months. A meta-analysis of healthy adult serum fluoride ranges was also conducted.ResultsThe typical healthy adult serum fluoride range was determined to be 0.21–2.11 μmol/l (p < 0.001). The EMTs’ baseline median (IQR) serum fluoride concentrations were 0.4 μmol/l (0.2; 1.0) with maximum 1.6 μmol/l. The EMTs’ overall median serum fluoride was 0.4 μmol/l (0.2; 1.3) with maximum 4.0 μmol/l, usually within healthy reference ranges. All results were ≤10% of the suggested single-dose renal toxic threshold. One result was above a threshold for skeletal fluorosis. The highest measured serum fluoride was 24% of the lowest level associated with radiologic evidence of fluorosis. There was no evidence overall of increasing serum fluoride levels.ConclusionsThere was no evidence that EMTs’ exposure to methoxyflurane resulted in sustained increased serum fluoride. These results imply EMTs’ occupational safety from acute renal toxicity when activated carbon filtration is used on patient exhalation. However, 1 serum fluoride result above a skeletal fluorosis threshold suggests that the risk of mild skeletal fluorosis cannot be excluded.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2021, 34, 6; 767-777
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Drechslera graminea on total soluble proteins and defense enzymes of barley
    Autorzy:
    Goel, N.
    Jaiswal, G.
    Srivastava, A.K.
    Paul, P.K.
    Goel, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/66670.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    barley
    Hordeum vulgare
    defense enzyme
    Drechslera graminea
    peroxidase
    phenylalanine lyase
    polyphenol oxidase
    protein
    soluble protein
    tyrosine ammonia lyase
    Opis:
    Barley phylloplane is seriously colonized by Drechslera graminea, the causal agent of leaf stripe disease in the hos. The present study involved the elucidation of alterations induced in the protein content of the host due to Drechslera infection. Naturally growing barley plants were obtained from fields and Drechslera graminea was isolated and identified from diseased plants’ leaves. After identification and preparation of the pure culture, the pathogen was inoculated on plants grown under aseptic and controlled laboratory conditions. Changes in the total soluble cytoplasmic proteins and defense enzymes of the host such as polyphenol oxidase (PPO), peroxidase (POX), phenylalanine lyase (PAL) and tyrosine ammonia lyase (TAL) were observed up to 5 h after inoculation. The results demonstrated a significant effect of the pathogen on the cytoplasmic protein expression of the host as well as in its defense system.
    Źródło:
    Journal of Plant Protection Research; 2018, 58, 3
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low genetic diversity of declining Viola uliginosa (Violaceae) at its southern range limits in Poland
    Autorzy:
    Paul, W.
    Cieslak, E.
    Ronikier, M.
    Migdalek, G.
    Slomka, A.
    Zabicka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/19351.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Viola uliginosa (bog violet) is a declining species throughout its range due to – mostly anthropogenic – drying out of the wet habitats it occupies. Using AFLP markers, we aimed to estimate the genetic diversity in Polish populations, that may give an insight into the situation of plant populations facing rapid loss of natural habitats. Bog violet from several dispersed Polish populations is generally characterized by very low genetic diversity (HT = 0.048), even lower than several other endangered violets; therefore, we suggest that it should preserve at least EN rank in the red lists/red data books. The mean gene diversity within all populations (HS) was much lower than gene diversity (GST) between populations (0.020 versus 0.583, respectively) which supports the prevalence of clonal propagation of the species (mainly by stolons) but may also point to some significance of autogamy in cleisto- and chasmogamous flowers. A high FST value and the Mantel test for all populations revealed significant isolation by distance. Geographically neighboring pairs of populations formed genetic clusters supported by all (in the case of two closest populations) or most statistical analyses applied. Special attention should be paid to the locus classicus of the species in Rząska, consisting of a small number of individuals, forming a genetically distinct group, revealing very low gene diversity (Hj = 0.009) and the longest genetic distance to the remaining populations. Our results can contribute to planning future protection measures for the species at this and other locations. Genetic structure of the studied populations suggests local affinities of populations but does not generally support hypothesized recent continuity of V. uliginosa range along the river valleys of southern Poland; this view may, however, be altered with widening of the scope of studied populations and chosen molecular markers.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2016, 58, 2
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    World Health Organization MPOWER for tobacco control in India: a 6-year retrospective analysis
    Autorzy:
    Malhi, R.
    Mago, G.
    Sharma, P.
    Gambhir, R.S.
    Aggarwal, A.
    Paul, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/28763548.pdf
    Data publikacji:
    2023
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Opis:
    Background. Prevalence and practices of tobacco usage in India are diverse and incongruent and Government of India has enacted various laws to overcome this burden. To make tobacco control measures effective and powerful, WHO introduced MPOWER in 2004 and India was one of the first countries that implemented the MPOWER. Objective. This study is aimed to quantify the implementation of MPOWER tobacco control policies in India. Material and Methods. In this retrospective analysis, data was gathered from the WHO MPOWER of India from 2015 to 2021. This analysis was based on the checklist which was designed previously by Iranian and international tobacco control specialists in their study on tobacco control. Results. In the present comparative analysis, India was categorized by scores and these were acquired from each indicator for each activity and 2021 year got the highest scores as compared to the previous year scores i.e. 27 in 2015. In context to individual indicators, noticeable increase in scores has been seen in both health warning on cigarette packages and adult daily smoking prevalence, whereas no progress was observed in smoking related policies. Conclusion. Although MPOWER programmes are widely accepted by the Indian government, but still substantial improvement in fewer sections is required.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 2023, 74, 4; 421-426
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Towards Attosecond Pulses with High Harmonics
    Autorzy:
    Agostini, P.
    Paul, P. M.
    Breger, P.
    Toma, E. S.
    Muller, H. G.
    Mullot, G.
    Augé, F.
    Balcou, Ph.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030463.pdf
    Data publikacji:
    2002-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.65.Re
    42.65.Ky
    32.80.Rm
    33.60.Cv
    Opis:
    The high harmonics produced by focusing an intense femtosecond laser in a gas are theoretically shown to be locked in phase. The physics of this locking is discussed and a new method based on quantum interference in two-photon, two-color ionization allowing to retrieve the relative phase of harmonic pairs is described. The main result is that the 5 harmonics of orders 11-19 produced in argon generate a train of subfemtosecond pulses with a period of 1.35 fs and a duration of 250 attoseconds.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 3; 313-324
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of Low–power 4-bit Flash ADC Using Multiplexer Based Encoder in 90nm CMOS Process
    Autorzy:
    Shylu Sam, D. S.
    Sam Paul, P.
    Jeba Jingle, Diana
    Mano Paul, P.
    Samuel, Judith
    Reshma, J.
    Sudeepa, P. Sarah
    Evangeline, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2124770.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    flash ADC
    low power
    dynamic comparator
    encoder
    Opis:
    This work describes a 4-bit Flash ADC with low power consumption. The performance metrics of a Flash ADC depend on the kind of comparator and encoder used. Hence openloop comparator and mux-based encoder are used to obtain improved performance. Simulation results show that the simulated design consumes 0.265mW of power in 90nm CMOS technology using cadence-virtuoso software. The circuit operates with an operating frequency of 100MHz and a supply voltage of 1V.
    Źródło:
    International Journal of Electronics and Telecommunications; 2022, 68, 3; 565--570
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental investigation on elevated water tanks with base isolation – response spectrum approach
    Autorzy:
    Vimal, Paul P. A.
    Regin, Joseph D. J.
    Jinu, Gowthami T. R.
    Chettiar, Chembakaraman G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1839602.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    response spectrum
    base isolation
    natural time period
    base shear
    spectral
    acceleration
    Opis:
    Elevated water tanks in an empty condition, though not important in structural design, becomes an important problem in seismic design. The objective of the present research is to investigate the elevated water tanks in empty and in filled conditions and to emphasize the importance of seismic response. Four elevated tanks with various parameters are selected for seismic analysis with the base isolation technique. It is found out that empty tanks are highly vulnerable to earthquake effects, whereas filled tanks can be mitigated by providing base isolation. A simple experimental investigation has also been carried out to validate the analytical results.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2020, 58, 4; 885-899
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Corrosion behavior of ZrC particles reinforcement with Al-12Si composites by weight loss method using acidic media
    Autorzy:
    John, C. F.
    Paul, R. C.
    Singh, S. C. E.
    Jacobjose, J.
    Ramkumar, T.
    Hikku, G. S.
    Sharma, R. K.
    Sengottuvel, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/200059.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Al-Si-ZrC composites
    powder metallurgy
    weight loss method
    corrosion rate
    SEM
    kompozyty Al-Si-ZrC
    metalurgia proszków
    metoda redukcji masy
    szybkość korozji
    Opis:
    This paper aims to investigate the corrosion behavior of zirconium carbide (ZrC) reinforced Al – Si metal matrix composites (MMCs) in a mixture of acidic solution using weight loss method. The composites are prepared by powder metallurgy method. Al-12Si-xZrC composites containing 0, 5, and 10 weight percentage of ZrC particles are compacted in a die set assembly and sintered in an inert gas muffle furnace. The acidic solutions used for corrosion are 1 N HCl, 1 N H2SO4 and 1 N HNO3. The corrosion characteristics of Al-12Si-xZrC composites and the pure Al were experimentally evaluated. The corrosion test was carried out at different weight proportions of the samples in various concentrations of the acid such as 1 N HCl, 1 N H2SO4 and 1 N HNO3 for different exposure time (i.e., 24 h, 72 h, 144 h and 216 h), respectively. The results specified that corrosion rate of composites was lower than that of base metal Al under the corrosive atmosphere, regardless of exposure time and acidic solutions used as corrodents. Al-12Si-xZrC composites become more corrosion resistant as the ZrC content is increased. This is because of the development of stable oxide layer above the specimens. Scanning electron microscopy (SEM) confirms the degree of attack of acidic solution on the surface of the examined material.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 1; 9-16
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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