The emerging market of engine oils consists of a number of products from different viscosity and quality classes. Determination of the base oil used in manufacturing of the final product (engine oil) as well as estimation of mutual miscibility of oils and their solubility could be crucial problems. Inverse gas chromatography and other chromatographic techniques are presented as an interesting and fruitful extension of normalised standard analytical methods used in the oil industry.
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http://dx.doi.org/10.1016/s0021-9673(02)00994-9 | DOI Listing |
Molecules
January 2025
Department of Pharmaceutical Botany, Faculty of Pharmacy, Near East University, 99010 Nicosia, Cyprus.
The genus L'Hér., is native to Australia with 61 introduced taxa in Cyprus, including Luehm., which has a wide distribution on the island.
View Article and Find Full Text PDFInt J Environ Res Public Health
January 2025
Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA 15261, USA.
The rapid growth of unconventional natural gas development (UNGD), also known as hydraulic fracturing, has raised concerns of potential exposures to hazardous chemicals. Few studies have examined the risk of childhood cancer from exposure to UNGD. A case-control study included 498 children diagnosed with leukemia, lymphoma, central nervous system neoplasms, and malignant bone tumors during the period 2010-2019 identified through the Pennsylvania Cancer Registry.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, India.
Refractory High-Entropy Alloys (RHEAs), such as NbMoTaW, MoNbTaVW, HfNbTaZr, ReHfNbTaW, NbTiAlVTaHfW, TiNbMoTaW (x = 0, 0.25, 0.5, 0.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Clinical Science, SUS, Division of Islet Cell Physiology, University of Lund, Malmö, Sweden.
The impact of islet neuronal nitric oxide synthase (nNOS) on glucose-stimulated insulin secretion (GSIS) is less understood. We investigated this issue by performing simultaneous measurements of the activity of nNOS versus inducible NOS (iNOS) in GSIS using isolated murine islets. Additionally, the significance of extracellular NO on GSIS was studied.
View Article and Find Full Text PDFEnviron Toxicol Chem
January 2025
Department of Environmental Engineering, Faculty of Engineering, Bursa Uludag University, 16059 Nilüfer/Bursa-Türkiye.
This study evaluates atmospheric polycyclic aromatic hydrocarbon (PAH) concentrations in a semi-urban area, Görükle, Turkey, from June 2021 to February 2022. The average concentration of ∑16 PAHs was 24.85 ± 19.
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