Results 51 to 60 of about 4,052,823 (334)

Geologic Time Scale 2020, Ch. 10. Oxygen Isotope Stratigraphy

, 2021
This chapter outlines the principles and pitfalls of oxygen isotope stratigraphy, and presents a compilation of δ18O data representing 3.8 Ga of Earth history.
Joachimski, Michael M, Grossman, Ethan L
core   +1 more source

Selenium‐Integrated Cyanine Dye With Enhanced Photophysical Properties for Optoacoustic‐Guided Cancer Imaging and Therapy

Advanced Functional Materials, EarlyView.
This study introduces selenium‐integrated cyanine dye (Se‐Cyn), with superior photostability, absorption, and photothermal efficiency, outperforming ICG in NIR window. Its nanoparticle form remains stable in water, accumulates in tumors, and enables strong optoacoustic imaging and effective phototherapy outcomes.
Divyesh Shelar, Snehal Salunkhe, Tony Fröhlich, Uwe Klemm, Pia Anzenhofer, Birgit Rathkolb, Martin Hrabě de Angelis, Oliver Plettenburg, Michael Sattler, Sudesh T. Manjare, Vipul Gujrati, Vasilis Ntziachristos   +11 more
wiley   +1 more source

An isotope study of the felsic units of the Bushveld Large Igneous Province, South Africa [PDF]

, 2010
Includes abstract.An O, H, Sr and Nd isotope study was carried out on the ~ 2059 Ma Bushveld granites and granophyres.
Fourie, Duane
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Distinct stadial-interstadial amplitudes of Asian monsoon water isotopes during the last deglaciation

Communications Earth & Environment
Understanding Asian summer monsoon changes during the last deglaciation through the oxygen isotope offers insights into future hydroclimate. However, the cause of limited glacial-interglacial shifts in oxygen isotope over eastern China remains unknown ...
Xiaoqing Wang, Weiyi Sun, Jian Liu, Liang Ning, Yuntao Bao, Kan Zhao, Jiazhi He, Yanan Ma, Kefan Chen, Qin Wen, Yongjin Wang   +10 more
doaj   +1 more source

BRACHIOPOD-BASED OXYGEN-ISOTOPE THERMOMETER: UPDATE AND REVIEW

Rivista Italiana di Paleontologia e Stratigrafia, 2019
In the early 1950’s, McCrea and Epstein and co-workers laid the foundation for the oxygen isotope-based thermometers. Many variations of the thermometer have been since formulated based on synthetic and biogenic carbonates.
UWE BRAND, M. ALEKSANDRA BITNER, ALAN LOGAN, KAREM AZMY, GAIA CRIPPA, LUCIA ANGIOLINI, PATRICK COLIN, ERIKA GRIESSHABER, ELIZABETH M. HARPER, EMMA TADDEI RUGGIERO, VRENI HÄUSSERMANN   +10 more
doaj   +1 more source

Bacterial and abiogenic carbonates formed in caves-no vital effect on clumped isotope compositions.

PLoS ONE, 2021
Speleothems (dominated by cave-hosted carbonate deposits) are valuable archives of paleoclimate conditions. As such, they are potential targets of clumped isotope analyses that may yield quantified data about past temperature variations.
Attila Demény, László Rinyu, Péter Németh, György Czuppon, Nóra Enyedi, Judit Makk, Szabolcs Leél-Őssy, Dóra Kesjár, Ivett Kovács   +8 more
doaj   +1 more source

Quantifying Raindrop Evaporation Deficit in General Circulation Models from Observed and Model Rain Isotope Ratios on the West Coast of India

Atmosphere, 2023
Raindrop evaporation is an important sub-cloud process that modifies rainfall amount and rainwater isotope values. Earlier studies have shown that various general circulation models (GCMs) do not incorporate this process properly during the simulation of
Saikat Sengupta, Sourendra Kumar Bhattacharya, Nimya Sheena Sunil, Sumit Sonar   +3 more
doaj   +1 more source

Pulsed Oxidative–Reductive Electrolysis Over Dual Cu and Co Single‐Atom Sites for Urea Electrosynthesis

Advanced Materials, EarlyView.
Alternating oxidative–reductive pulses synchronize CO2‐derived *CO and NH3‐derived *NHx intermediates over dual Cu and Co single‐atom sites, enabling urea and ethyl urea formation with a total C─N Faradaic efficiency of 42 ± 4%. In situ spectroscopy and theoretical calculations elucidate complementary Cu and Co functions, while oxidative controls ...
Putri Ramadhany, Peiqi Qiu, Thành Trần‐Phú, Denny Gunawan, Bernt Johannessen, Rosalie K. Hocking, Yan Jiao, Rose Amal, Rahman Daiyan   +8 more
wiley   +1 more source

Adaptive Supramolecular Interactions Govern Redox‐Active Molecules in Aqueous Redox Flow Batteries

Advanced Materials, EarlyView.
Adaptive supramolecular interactions overcome the solubility‐stability trade‐off in aqueous redox flow batteries. Hydrophobic anions disrupt intrinsic π–π stacking to enable high solubility, while redox‐state‐dependent spin pairing and cation coordination dynamically stabilize reactive intermediates during operation.
Vikram Singh, Seongyeon Kwon, Giu A. Silva Testa, Ariyeong Yun, Yohan Kim, Yunseop Choi, Dongwook Kim, Seongmo Ahn, Minyoung Shim, Jongcheol Seo, Evan Wenbo Zhao, Mu−Hyun Baik, Hye Ryung Byon   +12 more
wiley   +1 more source