Results 141 to 150 of about 584,918 (348)

Development of CPA‐Catalyzed β‐Selective Reductive Amination of Cardenolides for the Synthesis and Biological Evaluation of Hydrolytically Stable Analogs

open access: yesChemistry – A European Journal, EarlyView.
We describe a new method to produce hydrolytically stable cardiotonic steroids using a CPA‐controlled diastereoselective reductive amination of cardenolide aglycones. The oleandrin and digitoxigenin analogs exhibited promising activity against various cancer cell lines in the NCI‐60 screen.
Natasha Perry   +3 more
wiley   +1 more source

Analytical Study of Lanolin as Potential Biomarker of Prehistoric Sheep‐Shearing Practice

open access: yesChemistry–Methods, EarlyView.
Lanolin, a complex wax found on sheep wool, accumulates on shearing tools, such as flint and obsidian blades, used since the Neolithic. This study explores lanolin's degradation patterns as a potential biomarker for prehistoric sheep‐shearing practices, employing micro‐Fourier transformed infrared spectroscopy, hyperspectral imaging, and gas ...
Claudia Adsuar Fuster   +8 more
wiley   +1 more source

Colors from the Past: Ion Beam Analyses on Glass Finds Excavated at the Late Iron Age Settlement from Tinosu, Prahova County, Romania

open access: yesChemPlusChem, EarlyView.
Particle induced X‐ray emission‐Particle induced gamma‐ray emission analyses of 20 glass fragments from monochrome or millefiori vessels and adornments from the Late Iron Age site from Tinosu, Romania (1st c. BC and 1st c. AD) indicates compositions similar to coeval Hellenistic and Roman glass finds , suggestive for imports.
Roxana Bugoi   +4 more
wiley   +1 more source

Proximity Strategies for Stakeholder Engagement in Business Models for Sustainability: A Conceptual Framework

open access: yesCorporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Stakeholder engagement is a crucial part of business models for sustainability (BMfS), but companies struggle to implement it. One approach that could be leveraged is the concept of proximity, as it can enable sharing of knowledge and values.
Giovanna Attanasio   +2 more
wiley   +1 more source

How to Produce Green Hydrogen from Olivine and Seawater? By Ultrasound

open access: yesChemSusChem, Accepted Article.
Green hydrogen is a pillar for achieving global decarbonization and reducing of greenhouse gas emissions. Here, we report on a new, nature‐inspired process for green hydrogen production using virtually unlimited natural resources. Olivine, the most abundant mineral in the Earth’s upper mantle, is key to this process.
Sergey Nikitenko, Tony Chave
wiley   +1 more source

Wetlands as environments of early human occupation: A new classification for freshwater palaeowetlands

open access: yesThe Depositional Record, EarlyView.
A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo   +1 more
wiley   +1 more source

Modern and ancient tidal sedimentary systems in the era of energy transition: Introduction to the special volume of The Depositional Record

open access: yesThe Depositional Record, EarlyView.
This volume examines tidal sedimentary systems through 11 articles, spanning ancient and modern tidalites, technological advances and implications for human management. Highlighting contributions from Tidalites 2022 and beyond, it underscores tidalites' significance in sedimentology, environmental forecasting and energy transition, reflecting decades ...
Sergio G. Longhitano   +2 more
wiley   +1 more source

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