Results 91 to 100 of about 207,386 (342)

An Eco-Friendly Ultrasonic-Assisted Method for Efficient Asphaltene Separation from Crude Oil: Optimization and Analytical Evaluation [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
This study introduces an ultrasonic-assisted method for asphaltene separation from crude oils as a safer, faster, and greener alternative to the conventional ASTM D6560 procedure.
Shayan Dadgarnejad, Abbas Maleki
doaj   +1 more source

Microbial Degradation of Hydrocarbons—Basic Principles for Bioremediation: A Review

open access: yesMolecules, 2020
Crude oil-derived hydrocarbons constitute the largest group of environmental pollutants worldwide. The number of reports concerning their toxicity and emphasizing the ultimate need to remove them from marine and soil environments confirms the unceasing ...
Łukasz Ławniczak   +4 more
doaj   +1 more source

Biosorption Technique for Naphthalene Removal from Aqueous Solution By Chara sp., Algae [PDF]

open access: yesEngineering and Technology Journal, 2018
These instructions give guidelines for preparing the article to be published in the Engineering& Technology Journal using MS World 7.0 or later. A short abstract should open the paper and give a clear indication of the aims, scope and the main results of
Talib Albayati, Khairi Kalash
doaj   +1 more source

CRISPR/Cas9‐Based Vanadium MXene‐Free Radical Spatiotemporally Controlled Nanoreactor for Photothermal‐Induced Multi‐Effect Synergistic Antitumor Therapy

open access: yesAdvanced Science, EarlyView.
In this study, a MXene‐based V4C3 nanoplatform, VARH, was constructed, which achieved a photothermal conversion efficiency of 44.21% in the NIR‐II window. This platform integrated photothermal therapy, chemodynamic therapy, and thermodynamic therapy with CRISPR/Cas9‐mediated heat shock protein 90 knock‐out technology.
Zi‐Jian Huang   +8 more
wiley   +1 more source

On the relevance of polyynyl-substituted PAHs to astrophysics

open access: yes, 2012
We report on the absorption spectra of the polycyclic aromatic hydrocarbon (PAH) molecules anthracene, phenanthrene, and pyrene carrying either an ethynyl (-C2H) or a butadiynyl (-C4H) group.
Bauer, I.   +10 more
core   +1 more source

Laboratory Determination of the Infrared Band Strengths of Pyrene Frozen in Water Ice: Implications for the Composition of Interstellar Ices [PDF]

open access: yes, 2014
Broad infrared emission features (e.g., at 3.3, 6.2, 7.7, 8.6, and 11.3 microns) from the gas phase interstellar medium have long been attributed to polycyclic aromatic hydrocarbons (PAHs).
Allamandola, L. J.   +6 more
core   +4 more sources

A High‐Performance and Fully Recyclable Supramolecular Nanofibrous Membrane for Multifunctional Air Filtration

open access: yesAdvanced Science, EarlyView.
A green, thermoreversible self‐assembly strategy yields a multifunctional and recyclable supramolecular nanofibrous membrane. Graphene oxide (GO) nanosheet acts as a heterogeneous nucleation‐templating agent, simultaneously modulating the supramolecular crystal packing while tailoring the nanofibrous architecture for elite performance.
Wenjing Sun   +6 more
wiley   +1 more source

Effects of supergene geochemical processes on desorption and bioavailability of polycyclic aromatic hydrocarbons in soil of karst area

open access: yesEnvironmental Pollutants & Bioavailability, 2021
Supergene geochemical processes (SGPs) occur ubiquitously in the Earth´s surface, but their effects on the fate and bioavailability of polycyclic aromatic hydrocarbons (PAHs) in soil remain unclear.
An Xianjin   +3 more
doaj   +1 more source

Large-scale distributions of mid- and far-infrared emission from the center to the halo of M82 revealed with AKARI [PDF]

open access: yes, 2002
The edge-on starburst galaxy M82 exhibits complicated distributions of gaseous materials in its halo, which include ionized superwinds driven by nuclear starbursts, neutral materials entrained by the superwinds, and large-scale neutral streamers probably
Kaneda, H.   +8 more
core   +6 more sources

Interstellar and Circumstellar PAHs [PDF]

open access: yesSymposium - International Astronomical Union, 2000
ISO has shown that the mid–IR spectra of almost all sources are dominated by narrow emission features collectively known as the UIR bands. These bands are carried by a family of polycyclic aromatic hydrocarbon molecules containing about 50 C-atoms. Other classes of molecules such as C-chains as well as non-aromatic groups attached to the PAHs are much ...
Tielens, A.G.G.M.   +3 more
openaire   +4 more sources

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