Results 71 to 80 of about 207,386 (342)

Nematodes as soil stress indicators for polycyclic aromatic hydrocarbons: A review

open access: yesHelminthologia, 2022
Polycyclic aromatic hydrocarbons (PAHs) are an important group of organic pollutants present in all parts of the environment, affecting ecosystems and human health.
Brázová T.   +3 more
doaj   +1 more source

PAHs in the Halo of NGC 5529

open access: yes, 2007
We present sensitive ISO $\lambda 6.7 \mu$m observations of the edge-on galaxy, NGC 5529, finding an extensive MIR halo around NGC 5529. The emission is dominated by PAHs in this band. The PAH halo has an exponential scale height of 3.7 kpc but can still
Allain   +62 more
core   +1 more source

Biodegradation of polycyclic aromatic hydrocarbons (PAHs) by fungal enzymes: A review.

open access: yesJournal of Environmental Science, 2017
Polycyclic aromatic hydrocarbons (PAHs) are a large group of chemicals. They represent an important concern due to their widespread distribution in the environment, their resistance to biodegradation, their potential to bioaccumulate and their harmful ...
Tayssir Kadri   +5 more
semanticscholar   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Quantum interference comparison between benzene, naphthalene, and azulene single molecular junction. [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
The ability to build devices from single-molecular junctions depends on the fabrication of molecular structures. Here we report significant changes in the transmission coefficient for different connectivities for polycyclic aromatic hydrocarbons (PAHs ...
Baker Abdalrazzaq, Alaa Al-Jobory
doaj   +1 more source

Role of Kekul\'e and Non-Kekul\'e Structures in the Radical Character of Alternant Polycyclic Aromatic Hydrocarbons: A TAO-DFT Study

open access: yes, 2016
We investigate the role of Kekule and non-Kekule structures in the radical character of alternant polycyclic aromatic hydrocarbons (PAHs) using thermally-assisted-occupation density functional theory (TAO-DFT), an efficient electronic structure method ...
Chai, Jeng-Da, Yeh, Chia-Nan
core   +1 more source

The formation of polycyclic aromatic hydrocarbons in evolved circumstellar environments [PDF]

open access: yes, 2010
The formation of Polycyclic Aromatic Hydrocarbons in the circumstellar outflows of evolved stars is reviewed, with an emphasis on carbon stars on the Asymptotic Giant Branch.
Cherchneff, Isabelle
core   +2 more sources

Nitric Oxide‐Generating Poly (allylamine hydrochloride) Coating on Biomedical Titanium Implant

open access: yesAdvanced Materials Interfaces, EarlyView.
We report a metal‐free, nitric oxide (NO)‐generating coating in which poly(allylamine hydrochloride) (PAH) is covalently immobilized onto titanium. The coating catalyzes NO generation from the endogenous S‐nitrosothiol GSNO, retains activity after multiple reuse cycles and pH exposures, and maintains endothelial cell viability while modulating ...
Siti Nur Asyura Adzlan   +7 more
wiley   +1 more source

Donor–Acceptor Pentacene Analogues With Near‐Infrared Emission and Tunable Aromaticity

open access: yesAngewandte Chemie, EarlyView.
Air‐ and photostable heterocyclic pentacene analogues with donor and acceptor groups flanking a para‐quinodimethane core exhibit large dipole moments, narrow bandgaps, reversible redox behavior, and NIR‐I to NIR‐II absorption and emission with pronounced solvatochromism.
Krzysztof Nowak   +6 more
wiley   +2 more sources

Factors influencing utilization of school health nurse program among secondary students of Lalitpur, Nepal: a mixed-method study

open access: yesBMC Public Health
Background Acknowledging the unique health needs of school children, the Government of Nepal launched the “One School One Nurse” initiative, which was first implemented by the Provincial Government of Bagmati Province in 2018/2019.
Saraswati Sharma   +6 more
doaj   +1 more source

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