Results 101 to 110 of about 35,154 (267)

Using Four Machine Learning Methods to Analyze the Association Between Polycyclic Aromatic Hydrocarbons and Visual Impairment in American Adults: Evidence from NHANES

Toxics
The causes of visual impairment are complex and may be influenced by exposure to environmental pollutants. Using data from the 2003–2004 National Health and Nutrition Examination Survey (NHANES), we examined the association between exposure to ten ...
Xiaowei Zang, Wei Zhou, Hengguo Zhang, Xiaodong Zang   +3 more
doaj   +1 more source

Aggregated functional data model for Near-Infrared Spectroscopy calibration and prediction [PDF]

, 2013
Calibration and prediction for NIR spectroscopy data are performed based on a functional interpretation of the Beer-Lambert formula. Considering that, for each chemical sample, the resulting spectrum is a continuous curve obtained as the summation of ...
Dias, Ronaldo, Garcia, Nancy L., Ludwig, Guilherme, Saraiva, Marley A.   +3 more
core  

P-resonant control for the neutral point of three phase inverter [PDF]

, 2014
In this project, a Proportional resonant (PR) current controller is proposed to maintain a balanced neutral point for a three-phase four wire inverter, which can be used in microgrid applications. The neutral-point circuit consists of a conventional
Omar Aashour, Omar Ali
core   +1 more source

Tuning the electronic, photophysical and charge transfer properties of small D-A molecules based on Thienopyrazine-terthienyls by changing the donor fragment: A DFT study [PDF]

, 2017
Indexación: Scopus.Four acceptor-donor organic conjugated molecules based on thieno[3,4-b]pyrazine-terthienyls were analyzed in order to explore the effect of the donor substituent on their molecular structures, electronic and optical properties. Density
Aicha, Y.A., Bouachrine, M., Bouzzine, S.M., Hamidi, M., Mendoza-Huizar, L.H., Salgado-Morán, G., Tagle, R.R., Zair, T.   +7 more
core   +1 more source

Three‐Step Synthesis Toward Fluorene‐Based Non‐Fused‐Ring Acceptors for Organic Solar Cells

Chemistry – A European Journal, EarlyView.
Applying a simple three step synthesis strategy leads to two fluorene‐based non‐fused‐ring electron acceptors, FHM‐Cl and FHM‐F for organic solar cells. The chlorinated variant delivers markedly higher efficiency due to broader light harvesting and favorable molecular packing, resulting in improved charge transport and reduced recombination losses ...
Virginia Lafranconi, Suman Mallick, Lisa Nauta, Lisa Inzko, Julia Hönigsberger, Danijel Babic, Bettina Schlemmer, Daniele Padula, Heinz Amenitsch, Thomas Rath, Gregor Trimmel   +10 more
wiley   +1 more source

Effect of electrokinetic on biodegradation of fluorene and phenanthrene in soil [PDF]

Iranian Journal of Chemical Engineering, 2016
Polycyclic aromatic hydrocarbons (PAH) are toxic, mutagenic, and carcinogenic compounds. Removal of these compounds has a great importance for environment. Removal of PAHs from soil is difficult as these chemicals are persistent in the soil.
B. Mokhtarani, S. Babaei, H.R. Mortaheb, K. Tabar Heidar   +3 more
doaj  

Molecular Actuators in Action: Electron-Transfer-Induced Conformation Transformation in Cofacially Arrayed Polyfluorenes [PDF]

, 2018
There is much current interest in the design of molecular actuators, which undergo reversible, controlled motion in response to an external stimulus (light, heat, oxidation, etc.).
Cai, Sheng, Ivanov, Maxim Vadimovich, Lindeman, Sergey V., Mirzaei, Saber, Rathore, Rajendra, Reid, Scott A., Talipov, Marat R., Wang, Denan   +7 more
core   +3 more sources

Self‐Immolative Gels: Programmable Degradation Using Self‐Immolative Linkers and Polymers

Chemistry – A European Journal, EarlyView.
Self‐immolative linkers and polymers undergo bond‐cleaving reaction cascades in response to specific stimuli. Their incorporation into gels can be harnessed to release cargo, induce property changes, or trigger degradation in a highly controlled manner. These functions can be employed in applications such as sensing and drug delivery.
Chuanfeng Li, Elizabeth R. Gillies
wiley   +1 more source

Novel Fluorene and Pyrrole Comprising Copolymers: Effect of Copolymer Feed Ratio on Electrochromic and Electrochemical Properties

Cumhuriyet Science Journal, 2019
Herein, synthesis of twohomopolymers namely, poly-2,2′-(9,9-dioctyl-9h-fluorene-2,7-diyl)bisthiophene(PBT), poly-pyrrole-3-carboxylic acid (PP3CA) and fluorene and pyrrolecomprising five novel copolymers (CoP1, CoP2, CoP3, CoP4, CoP5 ...
Şerife Özdemir Hacıoğlu
doaj   +1 more source

Bright Solvatochromic Fluorophores With Dual Emission Enabled by a Donor‐Engineering Strategy

Chemistry – A European Journal, EarlyView.
We screened tertiary amines for installation on the donor unit of highly emissive donor–acceptor‐type solvatochromic fluorophores based on a 9,9‐dimethyl‐2‐phenyl‐9H‐fluorene scaffold, with the aim of enabling two bright emissive states to coexist. As a result, the azetidine derivative [4] and the azepane derivative [7] exhibited clear dual emission ...
Kensei Konishi, Gen‐ichi Konishi
wiley   +1 more source