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Wyszukujesz frazę "Lachowicz, M. B." wg kryterium: Autor

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    Wyświetlanie 1-13 z 13
    Tytuł:
    The Mechanism of Corrosion of Steel 304L in the Presence of Copper in Industrial Installations
    Mechanizm korozji stali austenitycznej 304L w obecności miedzi w instalacjach przemysłowych
    Autorzy:
    Lachowicz, M. M.
    Lachowicz, M. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/354474.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    austenitic steel
    copper
    pitting corrosion
    mechanism of corrosion
    stal austenityczna
    miedź
    korozja wżerowa
    mechanizm korozji
    Opis:
    This paper presents the mechanism of corrosion of austenitic steel in the presence of copper. It has been found that when corrosion occurs, the presence of copper in the corrosive solution in the neighbourhood of austenitic steel results in the intensification of the corrosion processes. In the macroscopic scale, austenitic steel constitutes a cathode, but since copper precipitates can deposit on it, the steel can locally pass to the active state and become an anode in the places where copper deposited, which leads to its local corrosion due to galvanic corrosion.
    W pracy przedstawiono mechanizm korozji stali austenitycznej w obecności miedzi. Stwierdzono, że w przypadku wystąpienia korozji stali austenitycznej w obecności miedzi, prowadzi to do intensyfikacji zachodzących procesów korozyjnych. W skali makroskopowej stal austenityczna stanowi katodę, jednak możliwość osadzania się na niej wydzieleń miedzi powoduje, że lokalnie może ona przejść w stan aktywny i w tych miejscach stać się anodą, co prowadz do jej lokalnej korozji wskutek wystąpienia korozji galwanicznej.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 4; 2657-2662
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intergranular Corrosion of the as Cast Hypoeutectic Zinc-Aluminium Alloy
    Autorzy:
    Lachowicz, M. M.
    Lachowicz, M. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/382593.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metallography
    corrosion resistance
    intergranular corrosion
    zinc alloy
    alloy ZnAlCu
    metalografia
    odporność na korozję
    korozja międzykrystaliczna
    stop cynku
    stop ZnAlCu
    Opis:
    The paper presents the research results of the solenoid housing made of the Zn4Al1Cu alloy that was destroyed as a result of corrosion. Surface of the tested part showed macroscopically the features typical for white corrosion, and the resulting corrosion changes led to a disturbance of the alloy cohesion. The research performed have shown that the tested solenoid valve has intergranular corrosion as a reaction of the environment containing road salt. The corrosion was initiated in the areas of the alfa phase existence appearing in the eutectic areas which propagated over dendritic areas of the alloy. Initiation of the corrosion followed as a result of the galvanic effect of the alfa phase reach in aluminium showing higher electrochemical potential, in contact with the eta phase reach in zinc. The impact of the phase reach in lead present in the microstructure on the corrosion processes run was not found.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 79-84
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Grain size reduction in the 713C nickel superalloy as a result of heat treatment
    Autorzy:
    Lachowicz, M. B.
    Faryna, M.
    Podrez-Radziszewska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/379754.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heat treatment
    metallographic test
    superalloy 713C
    Ni3Al
    NbC
    EBSD method
    obróbka cieplna
    badanie metalograficzne
    nadstop 713C
    metoda EBSD
    Opis:
    The paper presents metallographic test results for the 713C nickel superalloy after heat treatment and crystallographic orientation analysis performed with the EBSD method. The 713C alloy was subjected to annealing in the temperature of 950 ºC for 30 hours followed by aircooling. As a result of the applied heat treatment the local grain size reduction in the alloy was observed. It has been found that in the primary grains the new subgrains of different crystallographic orientation are created. Between the new grains and the primary grains the boundaries of high angle appear. Orientation change in the micro-areas is closely related to the carbides rebuilding and volume diffusion of elements dissolved in the γ - γ’ alloy matrix and the (NbTi)C carbides.
    Źródło:
    Archives of Foundry Engineering; 2011, 11, 2 spec.; 143-148
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Tribological Wear of as Cast Zn-4Al Alloy Cooled at Various Rates from the Eutectoid Transformation Temperature
    Autorzy:
    Lachowicz, M. M.
    Leśniewski, T.
    Lachowicz, M. B.
    Jasionowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1837868.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metallography
    microstructure
    heat treatment
    abrasive wear
    Zinc alloys
    Zn-4Al
    metalografia
    mikrostruktura
    obróbka cieplna
    zużycie ścierne
    stopy cynku
    Opis:
    The paper presents the results from a study on the impact of the cooling rate in the eutectoid transition on the abrasive wear of the as cast Zn-4Al alloy. The microstructure of the researched material consists of dendrites of the η solid solution and an (α+η) eutectic structure. During the eutectoid transformation at 275oC the distribution in the eutectic structure was transformed and fined. Heat treatment was carried out for this alloy, during which three cooling mediums were used, i.e. water, air and an furnace. For the research material obtained in this way, metallographic examinations were performed using the methods of light and scanning electron microscopy, as well as hardness measurements. It was found that faster cooling rate promoted the fragmentation of structural components, which translates into higher hardness of the material. This also had effects in the tribological wear of the tested alloy. As part of the tests, an abrasive wear test was carried out on a standard T-07 tester.
    Źródło:
    Archives of Foundry Engineering; 2020, 20, 4; 108-114
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characteristics of changes occurring on the surface of thin-walled elements as a result of spot welding
    Charakterystyka zmian powstałych na powierzchni elementów cienkościennych w wyniku punktowego napawania
    Autorzy:
    Lachowicz, Marzena M.
    Lachowicz, Maciej B.
    Powiązania:
    https://bibliotekanauki.pl/articles/115139.pdf
    Data publikacji:
    2019
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    napawanie
    regeneracja
    część maszyny
    odkształcenie spawalnicze
    powłoka chromowa
    metalografia
    surfacing
    regeneration
    machine part
    welding distortion
    chromium coating
    metallography
    Opis:
    The paper presents the results of metallographic examination of a sleeve from a refrigeration system used in the food industry. On its outer surface, local surface changes were observed. Metallographic and microscopic SEM examinations were performed. It was found that the direct cause of their formation was the use of spot welding to regenerate its inner surface. It led to plastic deformation of the external surface as well as the formation of a layer of oxides with wustite properties.
    W pracy przedstawiono wyniki badań metalograficznych tulei pochodzącej z instalacji chłodniczej wykorzystywanej w przemyśle spożywczym. Na jej powierzchni zewnętrznej obserwowano lokalne zmiany powierzchniowe. Przeprowadzono badania metalograficzne oraz mikroskopowe SEM. Stwierdzono, że bezpośrednią przyczyną ich powstania było zastosowane w celu regeneracji jej powierzchni wewnętrznej napawania punktowego. Doprowadziło ono do powstania odkształceń plastycznych powierzchni zewnętrznej, a także utworzenia warstwy tlenków o cechach wustytu.
    Źródło:
    Welding Technology Review; 2019, 91, 8; 29-36
    0033-2364
    2449-7959
    Pojawia się w:
    Welding Technology Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructural aspects of repairing unalloyed cast steel with around 0.3% carbon content using welding technology
    Autorzy:
    Lachowicz, Maciej B.
    Lachowicz, Marzena M.
    Powiązania:
    https://bibliotekanauki.pl/articles/135166.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    metallography
    casting defects
    repairing castings
    padding
    welding methods
    microstructure
    Opis:
    In this work, the results of tests on castings made from unalloyed cast steel, which was repaired using surface padding, have been presented. The purpose of the work was to present the impact of the application of welding technology on the microstructure of cast steels and the dangers related to it. The appearance of a very adverse microstructure was found in the area where the padding occurred. In the light of the presented research, it seems that it is necessary to apply normalizing annealing after the padding of a cast, which will result in a more uniform and fine microstructure of the material being obtained. As a consequence, this will prevent possible operating damage from occurring in the finished products.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 61 (133); 130-135
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of the relative gene size of yeast mutants
    Autorzy:
    Kopocinski, B.
    Lachowicz, T.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/68487.pdf
    Data publikacji:
    1993
    Wydawca:
    Polska Akademia Nauk. Instytut Genetyki Roślin PAN
    Tematy:
    estymacja rozkladow
    dlugosc genow
    oddychanie
    statystyka matematyczna
    genetyka
    geny
    drozdze
    Źródło:
    Genetica Polonica; 1993, 34, 2; 99-108
    0016-6715
    Pojawia się w:
    Genetica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphometric characteristics of Dirofilaria repens Railliet et Henry, 1911 parasite of dogs in Poland
    Autorzy:
    Demiaszkiewicz, A.W.
    Polańczyk, G.
    Osińska, B.
    Pyziel, A.M.
    Kuligowska, I.
    Lachowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2143222.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    morphometric characteristics
    Dirofilaria repens
    parasite
    dog
    Polska
    Nematoda
    animal disease
    parasitic disease
    dirofilariasis
    zoonotic disease
    Opis:
    Specimens of the nematode Dirofilaria repens Railliet et Henry, 1911 were isolated from scrotum and subcutaneous connective tissue of three dogs in Mazowieckie and Lubelskie provinces. It is the first record of the mature nematode of this species in the dog in Poland. Redescription, morphometrical data and figures are presented.
    Źródło:
    Wiadomości Parazytologiczne; 2011, 57, 4; 253-256
    0043-5163
    Pojawia się w:
    Wiadomości Parazytologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Psychological factors and genetic characteristics of rural cannabis users
    Autorzy:
    Lachowicz, M.
    Chmielowiec, J.
    Chmielowiec, K.
    Suchanecka, A.
    Michałowska-Sawczyn, M.
    Mierzecki, A.
    Mroczek, B.
    Grzywacz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085700.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    addiction
    polymorphism
    personality traits
    cannabis
    Opis:
    Introduction. Marijuana is one of the most widely used psychoactive substance. There is evidence of genetic predisposition for addiction. Objective. The aim of the study is to evaluate personality traits measured by the NEO Five-Factor Inventory and State-Trait Anxiety Inventory, combined with analysis of Tag1B rs1079597 and Tag1D rs1800498 located in the DRD2 gene. Materials and method. The study group consisted of 214 rural cannabinoid users and 301 controls. The same psychometric test and real-time PCR genotyping were performed in both studied groups. Results. The values of Anxiety state, Anxiety trait, NEO FFI: Neuroticism and Openness in the rural cannabis using group were significantly higher than in the control group. On the other hand, lower values were observed among rural people using cannabis compared to the control group for NEO FFI: Extraversion, Agreeability and Conscientiousness. In the Anxiety trait subscale, a 2% association with the polymorphism DRD2 Tag1B rs1079597 was detected in subjects using cannabis. However, for the DRD2 Tag1D rs1800498, there was no effect on the differences in personality traits between rural cannabis users and the control group. Conclusions. The study shows differences in personality traits between the cannabis using group and controls. Interaction between genetic factors and personality traits was also detected. The association showing the combination of psychological characteristics and genetic variants can bring us closer to the overall picture of the issue of marijuana addiction.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 2; 260-268
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphometric characteristics of Dirofilaria repens Railliet et Henry, 1911 parasite of dogs in Poland
    Autorzy:
    Demiaszkiewicz, A.W.
    Polanczyk, G.
    Osinska, B.
    Pyziel, A.M.
    Kuligowska, I.
    Lachowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/840725.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    morphometric characteristics
    Dirofilaria repens
    parasite
    dog
    Polska
    Nematoda
    animal disease
    parasitic disease
    dirofilariasis
    zoonotic disease
    Źródło:
    Annals of Parasitology; 2011, 57, 4
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The prevalence and distribution of Dirofilaria repens in dogs in the Mazovian Province of Central-Eastern Poland
    Autorzy:
    Demiaszkiewicz, A.W.
    Polanczyk, G.
    Osinska, B.
    Pyziel, A.M.
    Kuligowska, I.
    Lachowicz, J.
    Sikorski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/51836.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2014, 21, 4
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prevalence and distribution of Dirofilaria repens Railliet et Henry, 1911 in dogs in Poland
    Autorzy:
    Demiaszkiewicz, A.W.
    Polanczyk, G.
    Osinska, B.
    Pyziel, A.M.
    Kuligowska, I.
    Lachowicz, J.
    Sikorski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/30657.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    In 2011-2013 1588 samples of dogs’ blood were examined for dirofilariosis using Knott method, as well as the Kingston and Morton method. The species of microfilariae was determined on the basis of morphometric characteristics. Samples were also examined using the Canine Heartworm Antigen Test. Positive samples were examined using a multiplex PCR assay for species confirmation. Microfilariae belonging to the species D. repens were found in the blood samples of dogs from all the provinces of Poland. The mean prevalence of this species observed in Poland was 11.7%. The range of intensity of infection was counted using the number of microfilariae found in 60 μl of blood amounted to between 1 and 158, and the mean intensity was 18 microfilariae. Microfilariae and antigens of D. immitis were not found in any examined blood samples.
    Źródło:
    Polish Journal of Veterinary Sciences; 2014, 17, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Significant association of DRD2 and ANKK1 genes with rural heroin dependence and relapse in men
    Autorzy:
    Lachowicz, M.
    Chmielowiec, J.
    Chmielowiec, K.
    Suchanecka, A.
    Masiak, J.
    Michałowska-Sawczyn, M.
    Mroczek, B.
    Mierzecki, A.
    Ciechanowicz, I.
    Gezywacz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2085710.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    Addiction
    heroin
    dopamine
    haplotypes
    Opis:
    Introduction. Substance abuse significantly influences human health and may induce problems with social functioning worldwide. Numerous genetic and environmental risk factors, as well as their interactions, accelerate the development of drug addiction. Etiologically, the dopaminergic mesocorticolimbic reward pathways are related to psychoactive substance addiction, and the reward properties of heroin are connected with changes in the mesolimbic dopaminergic system. Objective. The aim of this study is a haplotypic analysis of subjects addicted to polysubstance. However, with the knowledge that this is not a homogenous subgroup, it was decided to separate and analyze homogenous subgroups of subjects in order to find specific haplotypic variants among them. The subjects in the subgroups were addicted to heroin, and subjects with more than two relapses in the past two years. Materials and method. The study group comprised of 301 polysubstance addicted rural male subjects. From this group, 2 homogenous subgroups of subjects were isolated and additionally analyzed: (1) a group of heroin addicted subjects (n=61), and (2) a group of heroin-addicted subjects with at least two relapses in the last two years (n=21). The group consisting of all polysubstance addicted rural subjects and both homogenous subgroups were analyzed against a control group of non-addicted subjects (n=300), matching gender and age. Five polymorphisms in the DRD2/ANKK1 region were analyzed: rs1076560, rs1800498, rs1079597, rs6276 in the DRD2 gene, and rs1800497 in the ANKK1 gene. Results. A statistically significant haplotype association was found in analysis of the heroin addicted subjects, compared to controls, and two possible trends – when comparing the whole group of addicted subjects to controls, and in relapse subgroups, compared to the controls. Conclusion. The results obtained showed that haplotypes indicate a part of the biological component of addiction.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2020, 27, 2; 269-273
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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