Results 101 to 110 of about 23,412 (269)

Metodologia de otimização de ciclos de potência utilizando CO2 supercrítico [PDF]

open access: yes, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2015.Este estudo considera análises e otimizações termodinâmicas multivariáveis da performance de ciclos
Battisti, Felipe Gesser
core  

A Versatile Heterometallic Microporous MOF for Photocatalytic Hydrogen Generation

open access: yesSmall, EarlyView.
This work describes a green and scalable approach to robust and flexible heterometallic MOFs, MIP‐215's, with tunable photoactivity for efficient, noble‐metal‐free solar hydrogen production. ABSTRACT Photocatalytic particulate systems offer a cost‐effective solar hydrogen production but are generally limited by narrow visiblelight absorption and poor ...
Xingze Wang   +10 more
wiley   +1 more source

Recent advances of emergent extraction technologies to enhance bioactive compounds extraction of microalgae—An overview towards application in cosmetics

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Microalgae extracts show immense potential in cosmetics for their bioactivities; emerging extraction techniques enhance bioactive compound yield from microalgae. Abstract Microalgae have attracted significant interest in numerous sectors, particularly in the cosmetic industries, owing to their rich composition of bioactive compounds. This paper aims to
Alireza Mousakhani Ganjeh   +5 more
wiley   +1 more source

Short-term interactions between Longmaxi shale and carbon dioxide-based fracturing fluids

open access: yesHeliyon
The shale is a dense quarried rock material containing abundant shale oil/gas. Extracting shale gas usually requires fracturing the rock formation to speed up gas desorption and migration.
Guojun Liu   +4 more
doaj   +1 more source

Equilíbrio de fases do monômero L,L-Lactídeo em altas pressões: dados experimentais e modelagem [PDF]

open access: yes, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Alimentos, Florianópolis, 2014.Abstract : A demanda em larga escala por materiais poliméricos biodegradáveis produzidos a partir de ...
Bender, João Paulo
core  

Bakuchiol: From structural mimicry to systems‐level skin biology

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Convergent outcomes, divergent mechanisms: bakuchiol vs. retinol. Bakuchiol exhibits functional convergence with retinol in improving extracellular matrix integrity, epidermal differentiation and barrier function, while operating through distinct mechanisms.
Ratan K. Chaudhuri
wiley   +1 more source

Supercritical Calorimetry: An Emerging Field

open access: yesCHIMIA, 2002
Calorimetry (adiabatic, isothermal, differential, oscillating or acoustic) is generally based on heat-flow measurements of the studied system. Most of its applications are dedicated to kinetic-parameter determination, safety studies and process ...
Frédéric Lavanchy   +2 more
doaj   +1 more source

Carbon dioxide as the working fluid in heating and/or cooling systems

open access: yes, 2003
Despite vigorous research the use of carbon dioxide in the market is still relatively small. This is due to legislation, and technical difficulties of developing efficient, acceptable carbon dioxide ...
Fleming, J.S.
core  

Study on Rock Characteristics of Borehole Wall during Supercritical Carbon Dioxide Drilling

open access: yesShiyou jixie, 2022
Borehole instability seriously affects the drilling production. Studying the influence of supercritical carbon dioxide on the rock characteristics of drilling borehole is beneficial to ensure the borehole stability.
Meng Zhaofeng
doaj  

Comparison of the Anti-Inflammatory Activities of Supercritical Carbon Dioxide versus Ethanol Extracts from Leaves of Perilla frutescens Britt. Radiation Mutant

open access: yesMolecules, 2017
In this study, we aimed to compare supercritical carbon dioxide extraction and ethanol extraction for isoegomaketone (IK) content in perilla leaf extracts and to identify the optimal method.
Chang Hyun Jin   +5 more
doaj   +1 more source

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