Results 231 to 240 of about 892,606 (318)

Martian differentiation history inferred from copper isotopes. [PDF]

Nat Commun
Wang DL, Zhu D, Xu YK, Wang SJ, Li SJ, Liu ZR, Li Y, Li Z, Tang H, Li XY, Liu JZ.   +10 more
europepmc   +1 more source

An Archaeometallurgical Investigation on Some Archaeological Metal Finds From the Sasanian Site of Jahāngir, Western Iran

Archaeometry, EarlyView.
ABSTRACT Twelve metal artifacts from recent excavations at the Sasanian archaeological site of Jahāngir in western Iran have been analyzed. These items include both decorative and utilitarian artifacts. The samples were examined using micro‐X‐ray fluorescence (μ‐XRF), scanning electron microscopy with energy‐dispersive X‐ray spectroscopy (SEM‐EDS), and
Omid Oudbashi, Leila Khosravi, Morteza Habibzadeh   +2 more
wiley   +1 more source

Seawater intrusion regulates microbial community structure and functional potential in subterranean estuaries of the Yangtze River. [PDF]

Front Microbiol
Zhao Y, Li D.
europepmc   +1 more source

Sulfur isotope fractionation between aqueous and carbonate-associated sulfate in abiotic calcite and aragonite

, 2020
Yigal Barkan, Guillaume Paris, Samuel M. Webb, Jess F. Adkins, Itay Halevy   +4 more
openalex   +2 more sources

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Oxidation of Organic Sulfur at the Air-Water Interface of Microdroplets: A New Way of Atmospheric Particle Precursor Formation. [PDF]

ACS Environ Au
Tang H, Yang X, Chu F, Zhou S, Li W, Li Y, Zhang H, Yu Z, Feng H, Pan Y.   +9 more
europepmc   +1 more source

The application of the sulfur isotope composition in the investigations of the origin of the sulfide ore deposits

, 1980
Leskovšek, H., Pezdič, J., Perko, S.
openalex   +1 more source

Characterisation of a phylogenetically distinct PL25 family ulvan lyase from a seaweed biomass enriched metagenome

The FEBS Journal, EarlyView.
Ulvan is a polysaccharide available from green seaweed with beneficial properties for various applications. The full potential of ulvan requires enzymatic degradation of the polymer, thus producing ulvan oligosaccharides. This study expands the armoury of characterised ulvan lyases.
Andrius Jasilionis, Pavithra Sivakumar, Justyna M. Dobruchowska, Sune Fjermedal, Hörður Guðmundsson, Bjorn Thor Adalsteinsson, Guðmundur Ó. Hreggviðsson, Anne S. Meyer, Eva Nordberg Karlsson   +8 more
wiley   +1 more source

Mass spectrometry measurements of mercury isotope ratios support geochemical sourcing of archaeological cinnabar in the Andean region. [PDF]

PLoS One
Young M, Cooke C, Burger R, Kaplan E, Prieto G, Bongers J, Dalton J, Usama F, Yuan S, Hintelmann H.   +9 more
europepmc   +1 more source

Using Eye Lens Stable Isotopes to Identify the Rearing Origin of Fall Age‐0 Walleye (Sander vitreus)

Fisheries Management and Ecology, EarlyView.
ABSTRACT Isotope values in fish eye lenses may be useful in differentiating rearing origins. We compared eye lens isotopic values of fall fingerling age‐0 walleye (Sander vitreus) reared in a hatchery pond, a recirculating aquaculture system (RAS), and a natural lake. Using 10 fish per rearing source, we delaminated layers from one eye lens per fish to
Justin M. Sturtz, Benjamin J. Schall, Matthew J. Ward, Cody E. Treft, Steven R. Chipps, Christopher A. Cheek   +5 more
wiley   +1 more source