Results 61 to 70 of about 237,313 (264)

Extraction of Carnosic Acid and Carnosol from Sage (Salvia officinalis L.) Leaves by Supercritical Fluid Extraction and Their Antioxidant and Antibacterial Activity

Plants, 2019
Sage (Salvia officinalis L.) is a good source of antioxidant compounds, carnosic acid and carnosol being the prominent ones. Both are soluble in CO2, and our goal was to investigate the application of supercritical CO2 extraction to obtain sage extracts ...
V. Pavić, Martina Jakovljević, M. Molnar, S. Jokić   +3 more
semanticscholar   +1 more source

Designing for Degradation: Transient Devices Enabled by (Nano)Cellulose

Advanced Materials, EarlyView.
Recent progress in transient devices enabled by (nano)cellulosic materials is reviewed. Transiency mechanisms, advantages of nanocelluloses, and a suite of applications are discussed. A circular thinking approach coupled with life cycle assessment is applied to critically revisit the potential, advantages, and challenges of nanocellulose‐enabled ...
Lucas J. Andrew, Erlantz Lizundia, Mark J. MacLachlan   +2 more
wiley   +1 more source

Enantioselective CE–MS analysis of ketamine metabolites in urine

ELECTROPHORESIS, Volume 44, Issue 1-2, Page 125-134, January 2023., 2023
Abstract The chiral drug ketamine has long‐lasting antidepressant effects with a fast onset and is also suitable to treat patients with therapy‐resistant depression. The metabolite hydroxynorketamine (HNK) plays an important role in the antidepressant mechanism of action.
Friederike A. Sandbaumhüter, Jordan T. Aerts, Regula Theurillat, Per E. Andrén, Wolfgang Thormann, Erik T. Jansson   +5 more
wiley   +1 more source

Thermodynamic behavior of supercritical matter [PDF]

Nature Communications 4, 2331 (2013), 2013
Since their discovery in 1822, supercritical fluids have been of enduring interest, and have started to be deployed in many important applications. Theoretical understanding of the supercritical state is lacking, and is seen to limit further industrial deployment.
arxiv   +1 more source

Pushing Radiative Cooling Technology to Real Applications

Advanced Materials, EarlyView.
Radiative cooling controls surface optical properties for solar and thermal radiation, offering solutions for global warming and energy savings. Despite significant advances, key challenges remain: optimizing optical efficiency, maintaining aesthetics, preventing overcooling, enhancing durability, and enabling scalable production.
Chongjia Lin, Keqiao Li, Meng Li, Benjamin Dopphoopha, Jiongzhi Zheng, Jiazheng Wang, Shanshan Du, Yang Li, Baoling Huang   +8 more
wiley   +1 more source

A review of current rate‐dependent phase transformations of lithium metal orthosilicate cathode materials for Li‐ion batteries

Electrochemical Science Advances, Volume 2, Issue 6, December 2022., 2022
Phase transformation of electrode materials must be understood to optimize Li‐ion battery (LIB) performance for practical applications. High capacity orthosilicate cathodes Li2MSiO4 are transformed to LiMSiO4 and subsequently to MSiO4 with various structures during delithiation, depending on the current rate (C‐rate) and M component.
Narinthorn Wiriya, Yutthanakon Kanaphan, Rattiya Hongtong, Songyoot Kaewmala, Jeffrey Nash, Wanwisa Limphirat, Sutham Srilomsak, Nantiya Thipthanaratchaphong, Nonglak Meethong   +8 more
wiley   +1 more source

Frozen by Heating: Temperature Controlled Dynamic States in Droplet Microswimmers

Advanced Materials, EarlyView.
In the design of smart materials based on active agents or microswimmers, the gaits or motile states of the agents are to be controlled, preferably by external parameters that do not require modifying the composition of the system. A facile, universal parameter is temperature.
Prashanth Ramesh, Yibo Chen, Petra Räder, Svenja Morsbach, Maziyar Jalaal, Corinna C. Maass   +5 more
wiley   +1 more source

Exploration of agricultural residue ash as a solid green heterogeneous base catalyst for biodiesel production

Engineering Reports, Volume 5, Issue 1, January 2023., 2023
Transesterification of vegetable oils with homogeneous catalyst for biodiesel synthesis is considered to have a promising future, but it is nonrenewable and hazardous. High production cost, in terms of feedstock oil and catalyst acquisition is one of the major challenges facing the global commercialization of biodiesel.
Christopher Tunji Oloyede, Simeon Olatayo Jekayinfa, Abass Olanrewaju Alade, Oyetola Ogunkunle, Nsikak‐Abasi Ubohon Otung, Opeyeolu Timothy Laseinde   +5 more
wiley   +1 more source

Recent Advances in Supercritical CO2 Extraction of Pigments, Lipids and Bioactive Compounds from Microalgae

Molecules, 2023
Supercritical CO2 extraction is a green method that combines economic and environmental benefits. Microalgae, on the other hand, is a biomass in abundance, capable of providing a vast variety of valuable compounds, finding applications in the food ...
Soultana Tzima, I. Georgiopoulou, Vasiliki Louli, K. Magoulas   +3 more
semanticscholar   +1 more source

Upconversion Nanoparticle‐Covalent Organic Framework Core–shell Particles as Therapeutic Microrobots Trackable With Optoacoustic Imaging

Advanced Materials, EarlyView.
Upconversion nanoparticle‐covalent organic framework core–shell particles provide enhanced contrast for optoacoustic imaging by leveraging the optical absorption of upconversion luminescence within the covalent organic framework matrix. Beyond their role as contrast agents, these particles enable customizable therapeutic agent loading and release, as ...
Dong Wook Kim, Paul Wrede, Andrés Rodríguez‐Camargo, Yi Chen, Nihal Olcay Dogan, Chaim Glück, Bettina V. Lotsch, Daniel Razansky, Metin Sitti   +8 more
wiley   +1 more source