Methodology for Determining the Vapor Permeability of Waterproof Materials

Autor: Katsiaryna Ivashko, Alexander Burkin

Publikováno v: Vestnik of Vitebsk State Technological University, Vol 45, Iss 2, Pp 9-16 (2023)

The article is devoted to the assessment of vapor permeability of composite membrane textile materials, which are widely used in the production of waterproof light industry products. These are clothes and shoes for active leisure and tourism, special

Externí odkaz: https://doaj.org/article/6aa51b4933294034b5d1cd575af8e002

Developing multilevel statistical models of determining bottom-hole flowing pressure in commercial oil well operations

Autor: Inna N. Ponomareva, Vladislav Ign. Galkin, Alexander V. Rastegaev, Sergey Vl. Galkin

Publikováno v: Revista Ingeniería UC, Vol 28, Iss 1 (2021)

One of the major tasks of monitoring oil production well operations is to determine bottom-hole flowing pressure (BHFP). The overwhelming majority of wells in the Perm krai are serviced using borehole pumps, which makes it difficult to take direct bo

Externí odkaz: https://doaj.org/article/162183b59a7942599749445be6fce652

Review on Sample Pretreatment Methods and Determination Techniques for Inorganic Elements in Plant Samples

Autor: LIU Ya-xuan, LI Xiao-jing, BAI Jin-feng, MA Na, ZHANG Qin

Publikováno v: Yankuang ceshi, Vol 32, Iss 5, Pp 681-693 (2013)

The determination of inorganic elements in plant samples is very important for the research of environmental geochemistry and biogeochemistry. The content of elements in plant samples is characteristically low, deeming it necessary for the determinat

Externí odkaz: https://doaj.org/article/d1c6a57d14374d2bb123875ca352d903

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An improvement of calcium determination technique in the shell of molluscs

Autor: Jairo Pinheiro, Antônia Gonçalves Diniz, Maurício Carvalho de Vasconcellos, Cristiane Soído

Publikováno v: Brazilian Archives of Biology and Technology v.52 n.1 2009
Brazilian Archives of Biology and Technology
Instituto de Tecnologia do Paraná (Tecpar)
instacron:TECPAR
Brazilian Archives of Biology and Technology, Vol 52, Iss 1, Pp 93-98 (2009)
Brazilian Archives of Biology and Technology, Volume: 52, Issue: 1, Pages: 93-98, Published: FEB 2009

The complexometric method is usually applied to quantitative calcium determination in different materials; however the application of this method to calcium determination in molluscs shells infers significant interferences to the results. The snail B

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1c75434568fe898dacb7a2c6e299d79
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100012