Results 111 to 120 of about 3,134 (251)

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Assessing the utility of sulfur isotope values for understanding mercury concentrations in water and biota from high Arctic lakes

Arctic Science, 2019
Methylmercury (MeHg) biomagnifies through aquatic food webs resulting in elevated concentrations in fish globally. Stable carbon and nitrogen isotopes are frequently used to determine dietary sources of MeHg and to model its biomagnification.
Gretchen L. Lescord, Meredith G. Clayden, Karen A. Kidd, Jane L. Kirk, Xiaowa Wang, Nelson J. O’Driscoll, Derek C.G. Muir   +6 more
doaj   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, EarlyView.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

Origin and formation of a chondritic xenolith in Krymka (LL3.2, breccia): Indications for a late formation of the accretionary breccia

Meteoritics &Planetary Science, EarlyView.
Abstract An unusual chondritic xenolith was found in two sequentially prepared thin sections of a sample from the Krymka (LL3.2) chondrite. The xenolith has a rounded, slightly deformed shape of about 5 mm in apparent diameter and is partially surrounded by a double rim made of an inner fine‐grained silicate‐rich rim and an outer sulfide‐rich rim.
Aelita Girich, Addi Bischoff, Samuel Ebert, Kazuhide Nagashima, Andreas Morlok, Harald Hiesinger, Jasper Berndt   +6 more
wiley   +1 more source

Mercury Sources Between Zhongshan Station and Dome A, Eastern Antarctica Identified Using Mercury Stable Isotopes

Geophysical Research Letters
Although mercury (Hg) is a neurotoxic metal of global relevance, its Antarctic biogeochemical cycles are not well characterized. Here, we present the total Hg (THg) distribution and stable isotopic fractionation between the Zhongshan Station and Dome A ...
Chuanjin Li, Jiubin Chen, Guitao Shi, Ruoyu Sun, Wang Zheng, Hélène Angot, Minghu Ding, Hongming Cai, Zhiheng Du, Rui Guo, Cunde Xiao, Bo Sun, Jiawen Ren, Dahe Qin   +13 more
doaj   +1 more source

Heavy Metals Distribution and Source Identification in Contaminated Agricultural Soils: Isotopic and Multi-Model Analysis

Agronomy
Heavy metal pollution in agricultural soil has been tightly associated with anthropogenic emissions. Although there are many studies that focus on a regional scale, the source identification of heavy metal contamination on a field scale around industrial
Tingting Mu, Benyi Cao, Min Yang, Xinhong Gan, Lin Chen, Xiaohan Wang, Ming Li, Yuanyuan Lu, Jian Xu   +8 more
doaj   +1 more source

Heat‐evolved coral photosymbionts exhibit dampened stress responses across distinct physiological contexts

New Phytologist, EarlyView.
Summary Experimental evolution under elevated temperatures has generated heat‐evolved (HE) strains of Symbiodiniaceae that enhance coral bleaching tolerance. However, the biomolecular mechanisms underlying this resilience remain poorly understood. We conducted a laboratory heat‐stress experiment and applied synchrotron‐based Fourier transform infrared (
Bede G. Johnston, Madeline R. Garing, Annaleise R. Klein, Wing Yan Chan, Matthew R. Nitschke, Madeleine J. H. van Oppen   +5 more
wiley   +1 more source

Application of mercury isotopes in environmental forensics

, 2022
2
KWON, SAE YUN
core  

A Robust Framework for Maize Elite Line Genome Editing Through Enhanced HI‐Edit via LbCas12a Activity Optimization

Plant Biotechnology Journal, EarlyView.
ABSTRACT Haploid induction coupled with genome editing (HI‐Edit) enables direct modification of commercial crop varieties, bypassing the need for trait introgression or direct transformation of elite lines with CRISPR machinery. However, its widespread application has been constrained by low haploid editing rates (HER), the proportion of haploids ...
Dawei Liang, Huanhuan Guo, Juan Wei, Fugui Zhu, Yuguo Zhang, Julie Green, Yun Ji, Huaibing Jin, Xiujuan Zhang, Huaping Gui, Hongmei Dan, Yubo Liu, Yu Zhang, Han Wang, Yutong Jiang, Lizhao Geng, Jian Lv, Wen Cai, Weibin Song, Timothy Kelliher, Xi Chen, Rachel Egger   +21 more
wiley   +1 more source

Applications of Stable Mercury Isotopes to Biogeochemistry

, 2011
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/155702/1/Blum_2012_Application_of_stable_mercury ...
Joel D. Blum, Blum, Joel D
core   +1 more source