Results 71 to 80 of about 205,885 (332)

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

مجلة 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

, 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

Hybridized Charge‐Transfer Window within a Fully Conjugated Multi‐Resonance Thermally Activated Delayed Fluorescence Framework for Ultrafast Reverse Intersystem Crossing and High‐Efficiency in Deep‐Blue Organic Light‐Emitting Diodes

Advanced Materials, EarlyView.
A hybridized charge‐transfer window combining short‐range and long‐range charge transfer is realized within a fully conjugated multi‐resonance thermally activated delayed fluorescence framework. The resulting excited‐state hybridization minimizes the singlet–triplet energy gap (0.04 eV) and enables ultrafast reverse intersystem crossing (krISC = 2.1 ...
Uisung Lee, Kyungwoo Jeong, Sunwoo Kang, Jun Yeob Lee   +3 more
wiley   +1 more source

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

BMC 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, Anita Mahotra, Tulsi Ram Thapa, Pushpa Thapa, Shital Bhandary, Suraj Bhushal, Sudarshan Paudel   +6 more
doaj   +1 more source

Investigation of the Amount and Possible Source of Polycyclic Aromatic Hydrocarbons (PAHs) in the Dust Deposited on the Leaves of Trees in Ahvaz

علوم آب و خاک, 2021
Dust deposited on the leaves of trees can be effectively used as the monitors of polycyclic aromatic hydrocarbons (PAHs). The dust deposited on the leaves can be used as an appropriate index for evaluating PAHs in the atmosphere.
B. Khalilimoghadam, A. Siadat, A. Yusefi
doaj  

Polycyclic Aromatic Hydrocarbons with armchair edges and the 12.7 {\mu}m band

, 2014
In this Letter we report the results of density functional theory calculations on medium-sized neutral Polycyclic Aromatic Hydrocarbon (PAH) molecules with armchair edges.
Candian, A., Sarre, P. J., Tielens, A. G. G. M.   +2 more
core   +1 more source

Formation of PAHs and Carbonaceous Solids in Gas-Phase Condensation Experiments [PDF]

, 2009
Carbonaceous grains represent a major component of cosmic dust. In order to understand their formation pathways, they have been prepared in the laboratory by gas-phase condensation reactions such as laser pyrolysis and laser ablation.
Allain, Baum, Boulanger, C. Jäger, Cao, Cherchneff, Cherchneff, Clayton, Draine, Drilling, F. Huisken, Foing, H. Mutschke, Hrivnak, I. Llamas Jansa, Jäger, Jäger, Jäger, Kwok, Kwok, Lederer, Lodders, Monier, Nuccitelli, Schnaiter, Sellgren, Th. Henning, Vijh   +27 more
core   +1 more source

DOT1L Drives Endothelial‐to‐Mesenchymal Transition and Fibrotic Vascular Remodeling via H3K79 Methylation

Advanced Science, EarlyView.
DOT1L as a central epigenetic regulator of EndoMT and pulmonary fibrosis. Acting as an early epigenetic switch, it translates TGFβ–SMAD signaling into H3K79me2‐mediated chromatin remodeling, selectively activates fibrosis‐related genes, and primes ECs for rapid mesenchymal transition.
Yaofeng Wang, Xing Peng, Jingjing Chen, Yun Zhang, Tinghong Zhang, Jingyuan Zhang, Jiaying Fan, Hui Zheng, Qiaoyuan Liu, Zhimin Song, Zhan‐Peng Huang, Shu Meng   +11 more
wiley   +1 more source

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

Angewandte 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, Olaf Morawski, Muhammad Yasir Mehboob, Maja Morawiak, Krzysztof Noworyta, Cina Foroutan‐Nejad, Marek Grzybowski   +6 more
wiley   +2 more sources

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

Molecules, 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, Marta Woźniak-Karczewska, Andreas P. Loibner, Hermann J. Heipieper, Łukasz Chrzanowski   +4 more
doaj   +1 more source