Results 91 to 100 of about 394,950 (321)

Modelling the petrogenesis of high Rb/Sr silicic magmas [PDF]

, 1991
Rhyolites can be highly evolved with Sr contents as low as 0.1 ppm and Rb/Sr > 2,000. In contrast, granite batholiths are commonly comprised of rocks with Rb/Sr 100.
Holden, Peter, Halliday, Alexander N., Davidson, Jon P., Hildreth, W.   +3 more
core   +1 more source

Availability of Cancer Screening Across HIV Treatment Sites in the IeDEA Consortium

International Journal of Cancer, EarlyView.
In recent years, incorporating comprehensive cancer screening strategies into routine HIV care has gained growing attention. This survey of 220 sites providing HIV care across 41 countries shows that cervical cancer screening has increased in availability over time.
Rachael A. Pellegrino, Bryan E. Shepherd, Sanjay Pujari, Valeria Fink, Gad Murenzi, Miriam Nakalembe, Sally B. Coburn, Eliane Rohner, Antoine Jaquet, Caroline Lade, Brenda Crabtree Ramirez, Kathryn Anastos, Aggrey Semeere, Lesley S. Park, Limpho Mokone, Simon Boni, I Ketut Agus Somia, Emilia M. Jalil, Adebola Adedimeji, Omenge Orang'o, Michael J. Silverberg, Kumbirai Pise Quarter, Eugène Messou, Jeremy Ross, Eduardo Gotuzzo, Patricia Lelo, Helen Byakwaga, Oliver Ezechi, Jonathan Euvrard, Fernanda Maruri, Chad J. Achenbach, Jessica L. Castilho, on behalf of International epidemiology Databases to Evaluate AIDS (IeDEA)   +32 more
wiley   +1 more source

MURMANO PLÜTONUNUN YAŞI VE OFİYOLİTLE OLAN İLİŞKİSİ (DİVRİĞİ-SİVAS)

Bulletin of the Mineral Research and Exploration, 1988
Sivas ili, Divriği ilçesinin birkaç km K-KB sında yer alan, bileşimi kuvars-siyenitle diyorit arasında değişen bileşik bir karaktere sahip olan Murmano plütonu, Divriği ofiyolit karmaşığına ait serpantinitler içerisine sokulum yapar.
H.P. ZECK, Taner ÜNLÜ
doaj  

Proglacial lake records of Holocene glacier behaviour and catchment processes in Slettedalen, Northeast Greenland

Journal of Quaternary Science, EarlyView.
ABSTRACT Constraining Arctic catchment response to Holocene climate change is vital for understanding future environments. We present detailed sedimentological, geochemical and grain size end‐member analysis of two Holocene (~7.0 ka to present) lake sequences, S1 and S2, close to Zackenberg, Northeast Greenland.
Kathryn Adamson, Matt Carney, Stamatia Galata, Tom Bishop, Timothy Lane, Vikas Mackevicius, Rochelle Taylor   +6 more
wiley   +1 more source

Study on the Factors Influencing the Separation of Sr and Nd in Sediments by Ion Exchange Resin

Yankuang ceshi, 2018
BACKGROUND In geological studies, Sr and Nd isotopes are classical isotopic dating and tracer systems. OBJECTIVES The traditional separation method usually uses the AG50W-X8 resin to elute and separate Sr and REEs in sediments, and then uses Sr-special ...
YIN Peng, HE Qian, HE Hui-jun, ZHAO Zhi-qi   +3 more
doaj   +1 more source

Farming in the shadows of Rome: A multi‐proxy palaeoenvironmental record from Loch Clunie—Perthshire

Journal of Quaternary Science, EarlyView.
ABSTRACT Roman impacts on local society is a subject of international significance. Loch Clunie, Perthshire, lies only 5.4 km from Inchtuthil, the only Roman legionary fortress in Scotland, and contains two crannogs and a probable lakeside hillfort. Despite this proximity and the likelihood of local–Roman interaction, these sites remain unexcavated ...
Samantha E. Jones, Maarten Blauuw, Fraser Hunter, Olalla López‐Costas, Antonio Martínez Cortizas, Tim M. Mighall, Gordon Noble   +6 more
wiley   +1 more source

Tracer diffusion in granitic melts: Experimental results for NA, K, RB, CS, CA, SR, BA, CE, EU to 1300°C and a model of calculation [PDF]

, 1982
Albert Jambon
openalex   +1 more source

Rb–Sr and U–Pb dating of bentonites

, 1983
A 6 in. (15 cm) bentonite in the Z coal (Cretaceous–Tertiary boundary) in eastern Montana was sampled at four different places, and biotite, sanidine, and zircon were separated from the clay.
H. Baadsgaard, J. F. Lerbekmo
core   +1 more source

Jewelled Byzantine and Medieval Reliquaries of the True Cross: Peridots and Other Gemstones in Material and Symbolic Perspective

Journal of Raman Spectroscopy, EarlyView.
An interdisciplinary in situ study of jewelled reliquaries of the True Cross integrates gemmology and portable analytical techniques, revealing new evidence on the identification and symbolic role of peridots and other gemstones. ABSTRACT Jewelled crosses containing relics of the True Cross occupy a central position in the devotional, artistic and ...
Stefania Martiniello, Stefano Legnaioli, Simona Raneri   +2 more
wiley   +1 more source

Insights into ore genesis of the Beishan Pb–Zn deposit in Guangxi, South China: Evidence from Rb–Sr dating and in-situ S–Pb isotopes

, 2023
He Yu, Xiao-Li Gou, Yichi Zhang, Hai-Yu Dong, Jingru Tang, Yuan-Yu Cui   +5 more
openalex   +1 more source