Results 81 to 90 of about 113,995 (347)

Synthesis of Enantiopure [3]Cyclorubicenes

open access: yesAngewandte Chemie, EarlyView.
Herein, we present a high yielding synthesis of enantiopure [3]cyclorubicene, which is a potential precursor for a Haeckelite nanotube. This macrocycle was studied for its electronic and chiroptical properties and exhibits one of the highest dissymmetry values reported for a nanohoop.
Moritz P. Schuldt   +2 more
wiley   +2 more sources

Numerical Simulation of Supercritical CO2 Jet Behavior

open access: yesShiyou jixie, 2019
In exploiting unconventional oil and gas resources by supercritical CO2 jet, the change of working condition parameters has a great influence on the effect of supercritical CO2 jet operation.
Wang Xiangzeng, Zheng Yong, Wu Jinqiao
doaj  

Particle Formation by Supercritical Fluid Extraction and Expansion Process

open access: yesThe Scientific World Journal, 2013
Supercritical fluid extraction and expansion (SFEE) patented technology combines the advantages of both supercritical fluid extraction (SFE) and rapid expansion of supercritical solution (RESS) with on-line coupling, which makes the nanoparticle ...
Sujuan Pan   +3 more
doaj   +1 more source

A Thermally Expandable Resin for the Volumetric Additive Manufacturing of Shape‐Memory Functional Foams

open access: yesAdvanced Materials Technologies, EarlyView.
Volumetric additive manufacturing allows to print parts extremely fast, but is so far is limited by the build volume of the printers. The foaming materials presented here allow to expand printed parts up to 500% reaching densities of 0.16 g cm−3 as well as providing shape memory properties enabling the creation of lightweight, functional parts ...
Silvio Tisato   +3 more
wiley   +1 more source

Transitioning of the Chemical Industry Toward a Net‐Zero Carbon Dioxide Emission Path

open access: yesAngewandte Chemie, EarlyView.
One way to reduce the greenhouse gas footprint of the chemical industry to almost zero would be the production of the platform molecules C1‐compounds, olefins, aromatics, and ammonia by non‐fossil pathways. The rest of the chemical production chains could be essentially left unchanged, provided the process energy input is renewable.
Ferdi Schüth, Stephan A. Schunk
wiley   +2 more sources

Kinetic models for supercritical CO2 extraction of oilseeds - a review

open access: yesCroatian Journal of Food Science and Technology, 2011
The supercritical fluid extraction of oilseeds is gaining increasing interest in commercial application for the last few decades, most particularly thanks to technical and environmental advantages of supercritical fluid extraction technology compared to ...
B. Nagy   +4 more
doaj  

Multiple states in the flow through a sluice gate [PDF]

open access: yes, 2018
This paper addresses the problem of hydraulic hysteresis for a supercritical open channel flow approaching a sluice gate when subcritical flow can establish downstream, against the gate.
Defina, Andrea, Viero, DANIELE PIETRO
core   +1 more source

Corn Zein Nanocarriers for Agrochemical Delivery and Smart Packaging

open access: yesAdvanced Sustainable Systems, EarlyView.
This review explores zein, a corn‐derived biodegradable protein, as a multifunctional nanocarrier for sustainable agriculture and packaging. It examines advances in agrochemical delivery, smart packaging, and stimuli‐responsive systems, while addressing scalability, environmental fate, and regulatory barriers.
Muhammad Shahidul Islam   +2 more
wiley   +1 more source

Environmental and Ecological Monitoring with Biodegradable Technologies

open access: yesAdvanced Science, EarlyView.
This review examines the development and application of wireless biodegradable sensors for environmental monitoring. It explores (bio)degradable materials, their degradation mechanisms in various environments, and non‐toxic fabrication techniques. Additionally, it addresses scalable production and sustainable powering solutions, emphasizing the high ...
Mohammad Javad Bathaei   +7 more
wiley   +1 more source

Birch Bark Dry Extract by Supercritical Fluid Technology: Extract Characterisation and Use for Stabilisation of Semisolid Systems

open access: yesApplied Sciences, 2017
Triterpene compounds like betulin, betulinic acid, erythrodiol, oleanolic acid and lupeol are known for many pharmacological effects. All these substances are found in the outer bark of birch.
Markus Armbruster   +4 more
doaj   +1 more source

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