Results 31 to 40 of about 529,470 (307)

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

Ditched and walled enclosures in Prehistoric Iberia (4th-3rd millennia cal. BCE): Like oil and water

Lucentum
Iberian Copper Age «ditched» and «walled» enclosure sites are often thought to represent two clearly distinguishable groups of sites. However, the discovery of sites where both ditches and walls are present («mixed sites») complicates things.
Víctor Jiménez-Jáimez, Marcos García-García, Adara López-López, David W. Wheatley   +3 more
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

Minerals in Afghanistan : the potential for copper [PDF]

, 2006
There are around 300 documented copper deposits, occurrences and showings in Afghanistan as shown in Figure 1. A variety of styles of copper mineralisation occur in rocks ranging in age from Proterozoic to Neogene.
Benham, Antony John, Coats, Stan
core  

Antioxidant status in acute stroke patients and patients at stroke risk [PDF]

, 2004
Background and Purpose: Antioxidant enzymes like copper/ zinc superoxide dismutase (SOD), catalase and gluthatione peroxidase (GSHPx) are part of intracellular protection mechanisms to overcome oxidative stress and are known to be activated in vascular ...
Haberl, R. L., Roskos, M., Streck, S., Winnefeld, K., Zimmermann, C.   +4 more
core   +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

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

A Comparative Study of Plasma Trace Elements (Copper, Iron and Zinc) Status in Anaemic and Non-anaemic Pregnant Women in Abakaliki, Nigeria [PDF]

, 2011
For a comparative study of plasma copper, iron and zinc between anaemic and non-anaemic pregnant women, data for anaemic (n = 223) and non-anaemic (n = 126) pregnant women drawn from a cohort of 351 pregnant Nigerians recruited at gestational age of ≤ 25
Ejikeme, BN, Obidoa, O, Ugwu, NC, Ugwuja, EI   +3 more
core   +1 more source

Clinical Validation of Plasma p‐217tau in Neurological Diseases

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Plasma p‐217tau is a minimally invasive but specific biomarker for diagnosing Alzheimer's disease (AD). However, its disease specificity remains to be clinically evaluated. We validated the reliability of the p‐217tau biomarker in 12 other neurological diseases.
Takeshi Kawarabayashi, Takumi Nakamura, Ryoma Takahashi, Tetsuya Ueda, Seiji Kinoshita, Chikage Uchida, Takashi Sugawara, Kentaro Hashimoto, Kunihiko Ishizawa, Masakuni Amari, Hiroo Kasahara, Yoshio Ikeda, Masamitsu Takatama, Mikio Shoji   +13 more
wiley   +1 more source

New evidence for prehistoric copper metallurgy in the vicinity of Bor [PDF]

Starinar, 2016
The last three years of archaeological investigations at the site Ru`ana in Banjsko Polje, in the immediate vicinity of Bor, have provided new evidence regarding the role of non-ferrous metallurgy in the economy of the prehistoric communities of
Kapuran Aleksandar, Živković Dragana, Štrbac Nada   +2 more
doaj   +1 more source