Results 31 to 40 of about 112,709 (303)

Evaluation of zinc and copper levels in vaginal tissues and whole blood: correlation with age

BMC Women's Health, 2021
Background Zinc and copper are essential trace elements and play a crucial role in the homeostasis of connective tissues. In this study, we aimed to define zinc and copper levels in the vaginal tissue and establish whether a correlation exists between ...
Anett Csikós, Bence Kozma, Edina Baranyai, Ida Miklós, Kindra Larson, Róbert Póka, Peter Takacs   +6 more
doaj   +1 more source

The potential to control Haemonchus contortus in indigenous South African goats with copper oxide wire particles [PDF]

, 2009
The high prevalence of resistance of Haemonchus contortus to all major anthelmintic groups has prompted investigations into alternative control methods in South Africa, including the use of copper oxide wire particle (COWP) boluses.
Medley, G. F., Githiori, John, Githiori, J.B., Vatta, A. F., Waller, P. J., Medley, Graham, Waller, P.J., Vatta, A.F., Githiori, J. B., Medley, G.F.   +9 more
core   +1 more source

Investigating Technological Changes in Copper-Based Metals Using Portable XRF Analysis. A Case Study in Sicily

Open Archaeology, 2017
The introduction of copper-based metals in Sicily appears to have been a particularly late and slow process. A program of pXRF analyses on early metals in Sicily has revealed the use of mostly copper, and a very late introduction of tin.
Vianello Andrea, Tykot Robert H.
doaj   +1 more source

PIXE and XRF analyses of copper artifacts from the Gumelniţa area (Romania)

Studia Praehistorica, 2022
The main aim of this research is to expand the knowledge of the early stages of copper metallurgy in the Chalcolithic within the Gumelniţa communities through compositional analyses (PIXE, XRF) performed on a group of copper objects that originated from
Adelina-Elena Darie, Dragoș-Alexandru Mirea, Valentin Parnic, Cătălin Lazăr   +3 more
doaj   +1 more source

ON THE COPPER AGE IN ANCIENT CHINA [PDF]

Bulletin of the Chemical Society of Japan, 1932
Abstract (1) Three specimens of ancient Chinese spear-heads which are said unearthed from. Yin site ((Remark: Graphics omitted.)) were analysed, and it was found that they consist mainly of copper added with certain quantities of lead and contain no significant amount of tin.
openaire   +1 more source

Speciation and fate of copper in sewage treatment works with and without tertiary treatment: The effect of return flows [PDF]

, 2014
This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2013 Taylor & Francis.The removal of metals from wastewaters is becoming an important issue, with new environmental quality standards ...
Scrimshaw, MD, Lester, JN, Cartmell, E, Inna, D   +3 more
core   +1 more source

Nuevas intervenciones arqueológicas en la cueva de Allekoaitze (Sierra de Aralar, Ataun, Gipuzkoa) [PDF]

Munibe Antropologia-Arkeologia
Se dan a conocer nuevos trabajos arqueológicos llevados a cabo en 2018 en la cueva sepulcral de Allekoaitze, en la sierra de Aralar (Gipuzkoa, País Vasco), para recoger elementos de interés dispersos en superficie, reconocer antiguos sondeos y, en ...
Ángel Armendariz, Lourdes Herrasti, Francisco Etxeberria   +2 more
doaj   +1 more source

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 more
wiley   +1 more source

The Neolithic and Copper Age of the Abruzzo-Marche region, central Italy [PDF]

, 1992
In 3 volsSIGLEAvailable from British Library Document Supply Centre- DSC:D177765 / BLDSC - British Library Document Supply CentreGBUnited ...
Skeates, R.G, Skeates, Robin, Skeates, R. G.   +2 more
core   +2 more sources

Sourcing obsidian from prehistoric sites in northwest Romania

Materiale și Cercetări Arheologice, 2018
Portable X‐ ray Fluorescence Spectroscopy (pXRF) was used to reveal the chemical signatures of 75 obsidian artefacts from seven sites in the Satu Mare region, ranging in age from Early Neolithic (late Starčevo‐ Criș culture) to Late Copper Age.
Boroneanț, A., Virag, C., Astaloș, C., Bonsall, C.   +3 more
doaj   +1 more source