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1
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The Influence of the Processing Temperature of Polylactide on Geometric Structure of the Surface Using FDM Technique

100%
Pszczółkowski B., Bramowicz M., Rejmer W., Chrostek T., Senderowski C., Pszczółkowski B., Bramowicz M., Rejmer W., Chrostek T., Senderowski C.
Archives of Metallurgy and Materials
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2021
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vol. 66
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issue 1
2
Content available remote

The influence of mercury content on the structural changes of bioindicator surfaces

100%
Szynkowska M., Pawlaczyk A.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 4
115-120
EN
This work examines the recommended chemical analytical method for the identification and detecting mercury from the environmental media. The aim of this study was to establish a correlation between mercury content in different biological indicators like: human hair, mushrooms, lichen, moss and needle samples, and the changes in the structure of the investigated material. We have explored the possibilities of using the SEM method in environmental studies to investigate a variety of biological samples coming from areas at different pollution state. We have combined the information from the quantity measurements with the qualitative analysis. The total content of Hg was determined using the Automatic Mercury Analyzer SP-3D. The accuracy of the applied method was verified by an analysis of proper certificate materials: Mixed Polish Herbs INCT-MPH-2, Lichen CRM 482, Pine needles 1575a and Human Hair NCS ZC 81002. The obtained results proved a direct influence of the content of mercury and environmental pollution on the damage of the structure of the studied samples.
3
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Surface Analysis of Abs 3D Prints Subjected to Copper Plating

88%
Maciąg T., Wieczorek J., Kałsa W.
Archives of Metallurgy and Materials
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2019
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vol. 64
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issue 2
4
Content available remote

Application of the TOF-SIMS and SEM-EDS methods to assess the influence of dusting from a phosphate waste deposal place based on hair analysis

88%
Szynkowska M., Leśniewska E., Pawlaczyk A., Rogowski J., Paryjczak T.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 4
85-90
EN
In this work, scanning electron microscopy with energy dispersive X-ray spectrometry (SEM-EDS) and the time-of-flight secondary ion mass spectrometry (TOF-SIMS) were used to study the particles present on the hair surface of the inhabitants of Wislinka (people environmentally exposed due to the closeness of a dump) in order to obtain the information about the possible influence of dusting from a phosphate waste deposal place. Additionally, the morphology and the composition of fresh phosphogypsum were analyzed. Waste phosphogypsum is formed in the process of a wet phosphoric acid production and there is still a problem with its storage. A thorough understanding of the composition and chemistry of phosphogypsum seems to be necessary to evaluate its environmental impact comprehensively. The results obtained from these two techniques turned out to be complementary and revealed the information expected.
5
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Retarding Carbon Steel Dissolution in Oil Well Acidizing Solution using Leave Extracts of Evolvulus alsinoides (Linn.) Linn. [Family: Convolvulaceae]

75%
Iroha N. B.
World News of Natural Sciences
|
2023
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vol. 50
1-10
EN
The corrosion inhibition performances of leave extracts of Evolvulus alsinoideson (EA) X70 carbon steel in 5% HCl was investigated using weight loss and surface analysis. Weight loss measurement showed that this leave extract has high inhibiting properties for X70 steel corrosion in acidic solution and the inhibition efficiency increased with the increase in inhibitor concentration. The inhibitive action of plant extract is discussed on the basis of adsorption of stable complex at the X70 steel surface. Adsorption of EA on the X70 steel surface in 5% HCl obeys the Langmuir adsorption isotherm. Gibbs free energy of adsorption was calculated and indicated that adsorption occurred through physical and spontaneous process. Scanning electron microscopy (SEM) of the inhibitor-adsorbed steel surface affirmed the adsorption of inhibitor and improvement in the surface smoothness of the X70 steel.
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