Results 221 to 230 of about 14,101 (268)

Paraben Exposure in the General Taiwanese Population: Reference Values, Personal Care Products, and Cumulative Risk Assessment

The Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT Parabens (parahydroxybenzoates), which are frequently used as preservatives in pharmaceuticals, foodstuffs, and personal care products, have recently attracted considerable attention due to their adverse health effects and endocrine‐disrupting properties.
Jung‐Wei Chang, Yen‐Hsuan Huang, Hsin‐Chang Chen, Vinoth Kumar Ponnusamy, Wan‐Ting Chang, Po‐Chin Huang   +5 more
wiley   +1 more source

Does Palsa Thaw in Northern Finland Contribute to Remobilisation of Metals Accumulated in Peat Into Surface Waters?

Land Degradation &Development, EarlyView.
ABSTRACT Permafrost is rapidly degrading in the sporadic zone, including palsa mires in Scandinavia. Peatlands in the area have likely accumulated heavy metals from atmospheric deposition of industrial contaminants in the wider region. As the palsa mire chemical composition is not well known, and in other permafrost regions the permafrost thaw may ...
Joanna Katarzyna Jóźwik, Krystyna Kozioł, Marcin Frankowski, Marta Jakubiak, Kamil Nowiński, Mariusz Jędrysek, Danuta Szumińska, Żaneta Polkowska   +7 more
wiley   +1 more source

Neanderthal coasteering and the first Portuguese hominin tracksites. [PDF]

Sci Rep
de Carvalho CN, Cunha PP, Belo J, Muñiz F, Baucon A, Cachão M, Figueiredo S, Buylaert JP, Galán JM, Belaústegui Z, Cáceres LM, Zhang Y, Ferreira C, Rodríguez-Vidal J, Finlayson S, Finlayson G, Finlayson C.   +16 more
europepmc   +1 more source

Magmatic-hydrothermal fluid evolution of the tin-polymetallic metallogenic systems from the Weilasituo ore district, Northeast China. [PDF]

Sci Rep
Gao X, Zhou Z, Breiter K, Mao J, Romer RL, Cook NJ, Holtz F.   +6 more
europepmc   +1 more source

Petrographic and geochemical evidence from pyrite for the genesis of the Bainiuchang Ag-polymetallic deposit southeastern Yunnan. [PDF]

Sci Rep
Wang T, Liu X, Zhang S, Lu B, Chen S, Meng G, Zhang H, Chen X, Zhou J, Mi X, Shi N, Xiao K.   +11 more
europepmc   +1 more source

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Combining Paleomagnetic and Re‐Os Isotope Data to Date Hydrocarbon Generation and Accumulation Processes

Journal of Geophysical Research: Solid Earth, 2023
AbstractUnraveling the complex relationship between orogenesis and hydrocarbon formation and accumulation is challenging and is often hampered by physical and chemical overprints of younger events. The Permian reservoir in the Longmen Shan orogen, South China, is such an example, and its evolution has been hotly debated.
Jing Hu, Yong Zhang, Dong Jia, Adrian Muxworthy, David Selby, Yongxiang Li, Matthew J. Brzozowski, Guoqi Wei, Jian Cao, Hongwei Yin, Wei Li   +10 more
openaire   +1 more source

Dating crust-mantle separation: Re-Os isotopic study of mafic xenoliths from central Arizona

Geology, 1997
Mafic deep crustal and shallow upper mantle xenoliths hosted in the Chino Valley and Camp Creek latites of central Arizona have 187Os/188Os (0.216 to 1.51) ratios dramatically higher than values typical of mantle peridotite (
Sonia Esperança, Richard W. Carlson, Steven B. Shirey, Douglas Smith   +3 more
openaire   +1 more source

Simplified method for the Re–Os dating of molybdenite using acid digestion and isotope dilution ICP-MS

Analytica Chimica Acta, 2002
Abstract An analytical method was developed for Os–Re dating of molybdenite. The method is based on determination of Os and Re concentrations in molybdenite by isotope dilution inductively-coupled plasma mass spectrometry (ID-ICP-MS). Sample digestion and sample/spike equilibration were achieved by a two-stage autoclave-based procedure using a ...
Dmitry Malinovsky, Ilia Rodushkin, Douglas Baxter, Björn Öhlander   +3 more
openaire   +1 more source

Dating post-Archean lithospheric mantle: Insights from Re-Os and Lu-Hf isotopic systematics of the Cameroon Volcanic Line peridotites

Geochimica et Cosmochimica Acta, 2020
Abstract Highly depleted Archean peridotites have proven very amenable to Re-Os model age dating. In contrast, due to the increasing heterogeneity of mantle Os isotope compositions with time, the Re-Os system has not been as effective in dating post-Archean peridotites.
Liu, Jingao, Pearson, D. Graham, Shu, Qiao, Sigurdsson, Haraldur, Thomassot, Emilie, Alard, Olivier   +5 more
openaire   +3 more sources

SULFIDE Re-Os AND Rb-Sr ISOTOPE DATING OF THE KANGDIAN IOCG METALLOGENIC PROVINCE, SOUTHWEST CHINA: IMPLICATIONS FOR REGIONAL METALLOGENESIS

Economic Geology, 2013
The Kangdian iron oxide copper-gold (IOCG) metallogenic province contains a number of economically important Fe-Cu deposits in South China and northern Vietnam. Due to the lack of precise mineralization ages, the metallogenesis of this province has long been a matter of debate.
Qi, L, Li, X, Selby, D, Zhou, MF, Zhao, X, Li, J   +5 more
openaire   +3 more sources