Results 61 to 70 of about 2,186,410 (361)

Pushing Radiative Cooling Technology to Real Applications

open access: yesAdvanced 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   +8 more
wiley   +1 more source

Supercritical Fluid Geochemistry in Geothermal Systems

open access: yesGeofluids, 2019
Supercritical fluids exist in the roots of many active high-temperature geothermal systems. Utilization of such supercritical resources may multiply energy production from geothermal systems; yet, their occurrence, formation mechanism, and chemical ...
Matylda Heřmanská   +2 more
doaj   +1 more source

Development of a Preparative Method for Obtaining an Enantiomerically Pure Substance of Salbutamol by Supercritical Fluid Chromatography

open access: yesРазработка и регистрация лекарственных средств, 2022
Introduction. An increasing number of studies conducted in various countries in the field of biopharmacy convincingly show the differences in the physiological effects on the human body of stereoisomers of pharmaceutical substances. As a rule, one of the
V. N. Tsarev   +2 more
doaj   +1 more source

Configurational and Vibrational Entropy in Hydrogen-bonded Fluids [PDF]

open access: yesarXiv, 2023
The thermodynamics of liquids and supercritical fluids is notorious for eluding a general theory, as can be done for crystalline solids on the basis of phonons and crystal symmetry. The extension of solid state notions such as configurational entropy and phonons to the liquid state remains an intriguing but challenging topic.
arxiv  

Frozen by Heating: Temperature Controlled Dynamic States in Droplet Microswimmers

open access: yesAdvanced 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   +5 more
wiley   +1 more source

Numerical Simulation of the Proppant Settlement in SC-CO2 Sand-Carrying Fluid in Fracturing Fractures

open access: yesEnergies, 2022
Supercritical CO2 fracturing has unique advantages for improving unconventional reservoir recovery. Supercritical CO2 can penetrate deep into the reservoir and increase reservoir reform volume, and it is less damaging to reservoir and easy to flow back ...
Dayong Chen, Zheng Sun
doaj   +1 more source

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

open access: yesAdvanced 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   +8 more
wiley   +1 more source

Enhancement of Permeability Activated by Supercritical Fluid Flow through Granite

open access: yesGeofluids, 2019
This geological study utilized electron probe microanalysis of granitic rocks to evaluate traces of hydrothermal fluid activity. Amphibole-plagioclase thermometry was applied to estimate the temperature of a glassy vein as approximately 700°C.
Tsuyoshi Nohara   +2 more
doaj   +1 more source

Revalorization of Broccoli By-Products for Cosmetic Uses Using Supercritical Fluid Extraction

open access: yesAntioxidants, 2020
The agri-food industry is currently one of the main engines of economic development worldwide. The region of Murcia is a reference area in Europe for the cultivation of fruits and vegetables and produces the bulk of Spanish exports of broccoli (Brassica ...
María Borja-Martínez   +4 more
doaj   +1 more source

A Sustainable Route From Quartz to Bifunctional Material with Adsorbed Lanthanides for Enhanced Fluorescent Activation in Doxycycline Sensing

open access: yesAdvanced Materials Interfaces, EarlyView.
The aim of this study is to develop a sensor material based on natural quartz combined with La(III) and Ce(III), both detected in Ni‐MH batteries, as well as Eu(III), for reliable qualitative and quantitative analysis of doxycycline over a broad concentration range.
Olha Semeshko   +6 more
wiley   +1 more source

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