Temat: wytrawianie - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Advantages of colour etching in quality control of graphitic cast irons
Autorzy:: Vaško, Alan
Powiązania:: https://bibliotekanauki.pl/articles/23966793.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: odlew żeliwny
mikrostruktura
czarno-białe akwaforty
wytrawianie kolorów
wytrawiacz
cast iron
microstructure
black and white etching
colour etching
etchant
Opis:: Graphitic cast irons are the most important and most widely used materials for the production of castings. Increasing requirements for the quality of these castings lead to increased demands on the control of foundry production from raw materials through technological operations to the finished product. An integral part of this control process is structural analysis, because the properties of graphitic cast irons depend mainly on their structure (on the shape, size and number of graphitic particles and on the character of a metal matrix in which graphite occurs). The paper deals with the structural analysis of graphitic cast irons using the classical black and white contrast, as well as the use of colour metallography, which enables to obtain additional information about the structure of cast iron. The article contains photographs of microstructures of graphitic cast irons, obtained using black and white etching, as well as colour etching. It deals with the advantages of colour etching compared to the use of classical black and white methods.
Źródło:: Production Engineering Archives; 2022, 28, 4; 319--324
2353-5156
2353-7779
Pojawia się w:: Production Engineering Archives
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Justification of the most rational method for the nanostructures synthesis on the semiconductors surface
Autorzy:: Suchikova, Y.
Vambol, S.
Vambol, V.
Mozaffari, N.
Powiązania:: https://bibliotekanauki.pl/articles/368501.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: hierarchies’ analysis method
chemical etching
electrochemical etching
lithographic etching
nanostructures synthesis
metoda hierarchii analitycznej
trawienie chemiczne
wytrawianie elektrochemiczne
litografia
synteza nanostruktur
Opis:: Purpose: of this paper is to justification the most rational method for the nanostructures synthesis on the semiconductors surface, which is capable of providing high quality synthesized nanostructures at low cost and ease of the process. Design/methodology/approach: The choice of the optimal method of synthesis was carried out using the hierarchy analysis method, which is implemented by decomposing the problem into more simple parts and further processing judgments at each hierarchical level using pair comparisons. Findings: The article describes the main methods of synthesis of nanostructures, presents their advantages and disadvantages. The methods were evaluated by such criteria as: environmental friendliness, efficiency, stages number of the technological process, complexity, resources expenditure and time and effectiveness. Using the hierarchy analysis method, has been established that electrochemical etching is the most important alternative, and when choosing a nanostructures synthesis method on the semiconductors surface, this method should be preferred. Such studies are necessary for industrial serial production of nanostructures and allow reducing expenses at the realization of the problem of synthesis of qualitative samples. Research limitations/implications: In this research, the hierarchy analysis method was used only to select a rational method for synthesizing nanostructures on the semiconductors surface. However, this research needs to be developed with respect to establishing a correlation between the synthesis conditions and the nanostructures acquired properties. Practical implications: First, was been established that the optimal method for the nanostructures synthesis on the semiconductors surface is electrochemical etching, and not lithographic or chemical method. This allowed the theoretical and empirical point of view to justify the choice of the nanostructures synthesis method in the industrial production conditions. Secondly, the presented method can be applied to the synthesis method choice of other nanostructures types, which is necessary in conditions of resources exhaustion and high raw materials cost. Originality/value: In the article, for the first time, the choice of the nanostructures synthesis method on the semiconductors surface is presented using of paired comparisons of criteria and available alternatives. The article will be useful to engineers involved in the nanostructures synthesis, researchers and scientists, as well as students studying in the field of "nanotechnology".
Źródło:: Journal of Achievements in Materials and Manufacturing Engineering; 2019, 92, 1-2; 19-28
1734-8412
Pojawia się w:: Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Ocena tusz miesa przeznaczonego do konsumpcji w kierunku obecnosci larw wlosni metoda kompresorowa i wytrawiania
Evaluation of the meat carcasses assigned for consumption towards the presence of Trichinella larvae by two methods: trichinoscopy and digestion
Autorzy:: Ramisz, A
Balicka-Ramisz, A.
Powiązania:: https://bibliotekanauki.pl/articles/841524.pdf
Data publikacji:: 2006
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: wlosnica
zagrozenia zdrowia
mieso z dzika
ocena jakosci
mieso wieprzowe
pasozyty
larwy
Warszawa konferencja
choroby czlowieka
trychinoskopia
wytrawianie
parazytologia
konferencje
Trichinella
tusze zwierzece
wlosnie
wykrywanie
test ELISA
Opis:: The main purpose of this article was to analyse the effectiveness of two methods: trichinoscopy and digestion method for control of animal trichinellosis. It was established that the using of magnetic stirrer improved the digestion of meat and shortened the digestion to 90-100 minutes. It is worthy of notice that the digestion method is three to four times more sensitive than the traditional trichinoscopy. In the years 1999-2004 Trichinella larvae were found in pork meat 6 times rarely comparing with the years 1990-1994. The introduction of digestion method resulted directly in the reduction (4 times) of the Trichinella infection in humans in the years 2000-2004 comparing with the years 1990-1994. The ELISA test appeared to be also very useful for epidemiological studies on Trichinella infection in animals and humans.
Źródło:: Annals of Parasitology; 2006, 52, 3; 199-204
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ocena tusz mięsa przeznaczonego do konsumpcji w kierunku obecności larw włośni metodą kompresorową i wytrawiania
Evaluation of the meat carcasses assigned for consumption towards the presence of Trichinella larvae by two methods: trichinoscopy and digestion
Autorzy:: Ramisz, A.
Balicka-Ramisz, A.
Powiązania:: https://bibliotekanauki.pl/articles/2144350.pdf
Data publikacji:: 2006
Wydawca:: Polskie Towarzystwo Parazytologiczne
Tematy:: wlosnica
zagrozenia zdrowia
mieso z dzika
ocena jakosci
mieso wieprzowe
pasozyty
larwy
Warszawa konferencja
choroby czlowieka
trychinoskopia
wytrawianie
parazytologia
konferencje
Trichinella
tusze zwierzece
wlosnie
wykrywanie
test ELISA
Opis:: The main purpose of this article was to analyse the effectiveness of two methods: trichinoscopy and digestion method for control of animal trichinellosis. It was established that the using of magnetic stirrer improved the digestion of meat and shortened the digestion to 90-100 minutes. It is worthy of notice that the digestion method is three to four times more sensitive than the traditional trichinoscopy. In the years 1999-2004 Trichinella larvae were found in pork meat 6 times rarely comparing with the years 1990-1994. The introduction of digestion method resulted directly in the reduction (4 times) of the Trichinella infection in humans in the years 2000-2004 comparing with the years 1990-1994. The ELISA test appeared to be also very useful for epidemiological studies on Trichinella infection in animals and humans.
Źródło:: Wiadomości Parazytologiczne; 2006, 52, 3; 199-204
0043-5163
Pojawia się w:: Wiadomości Parazytologiczne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Silicon solar cells efficiency improvement by the wet chemical texturization in the HF/HNO3/diluent solution
Poprawa sprawności krzemowych ogniw słonecznych poprzez chemiczna tekturyzację w roztworach HF/HNO3/rozpuszczalnik
Autorzy:: Kulesza, G.
Panek, P.
Zięba, P.
Powiązania:: https://bibliotekanauki.pl/articles/351196.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: teksturyzacja
wytrawianie kwasem
krzem multikrystaliczny
krzemowe ogniwa słoneczne
fotowoltaika
texturization
acid etching
multicrystalline silicon
silicon solar cells
photovoltaics
Opis:: The paper presents the results of the texturization process of the multicrystalline silicon wafers carried out in ternary HF/HNO3/diluent solution, where the diluent was either CH3COOH or H2O, at varying HF/HNO3 volume ratio and different time of texturization process. The technique of scanning electron microscopy was used to characterize the morphology of the obtained multicrystalline silicon surfaces, with subsequent surface reflectivity measurements. The appropriate selection of mixture components lead to a significant reduction in the reflectivity of the incident solar radiation in the relatively short time of 60 seconds. The resultant electric parameters were nearly the same as those for the commercial samples but obtained after 3 minutes.
Autorzy zaprezentowali wyniki badań dotyczących procesu teksturyzacji w roztworze HF/HNO3/rozpuszczalnik stosowanego dla płytek krzemu multikrystalicznego, gdzie jako rozpuszczalnik stosowano zamiennie CH3COOH oraz H2O. W badaniach jako zmienne przyjęto objętościowy stosunek HF/HNO3 oraz czas procesu. Morfologia powierzchni uzyskana po chemicznej modyfikacji krzemu została scharakteryzowana przy użyciu skaningowej mikroskopii elektronowej, a następnie zbadano wpływ takiego ukształtowania powierzchni na odbicie promieniowania słonecznego. Autorzy wykazali, że odpowiednie dobranie składu mieszaniny trawiącej pozwala na uzyskanie najniższych wartości odbicia w stosunkowo krótkim czasie 60 sekund. Ponadto parametry elektryczne zmodyfikowanych ogniw słonecznych nie odbiegały od tych uzyskanych komercyjnie w czasie trzykrotnie dłuższym.
Źródło:: Archives of Metallurgy and Materials; 2013, 58, 1; 291-295
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki