Results 81 to 90 of about 33,310 (337)

Use of mixed Li/K metal TMP amide (LiNK chemistry) for the synthesis of [2.2]metacyclophanes

open access: yesBeilstein Journal of Organic Chemistry, 2011
A new two-step general approach to [2.2]metacyclophane synthesis from substituted m-xylenes is described. The strategy employs a selective benzylic metalation and oxidative C–C bond formation for both synthetic operations.
Marco Blangetti   +2 more
doaj   +1 more source

Photoabsorption and photodissociation of molecules important in the interstellar medium [PDF]

open access: yes
The photoabsorption, photodissociation, and fluorescence cross sections of interstellar molecules are measured at 90 to 250 nm. These quantitative optical data are needed for the understanding of the formation and destruction processes of molecules under
Lee, Long C., Suto, Masako
core   +1 more source

Investigation of taste tainting in salmon flesh in the Ribble catchment [PDF]

open access: yes, 1997
This report presents the findings of the first phase of an investigation into the cause(s) of taints in salmonid fish in the River Ribble, commissioned by the North West Region of the Environment Agency.
Crane, R.I.   +3 more
core  

Estimating European volatile organic compound emissions using satellite observations of formaldehyde from the Ozone Monitoring Instrument [PDF]

open access: yes, 2010
Emission of non-methane Volatile Organic Compounds (VOCs) to the atmosphere stems from biogenic and human activities, and their estimation is difficult because of the many and not fully understood processes involved.
Chance, K.   +4 more
core   +2 more sources

Dynamics of methyl radical formation by 266 nm photolysis of xylenes and mesitylene [PDF]

open access: gold, 2021
Namitha Brijit Bejoy   +3 more
openalex   +1 more source

A Novel Microfluidic System for 3D Epidermis and Full‐Thickness Skin Growth for Nanoparticle Safety Assessment

open access: yesAdvanced Healthcare Materials, EarlyView.
This work presents a novel, dynamically perfused, configurable microfluidic system for epidermis‐only (E and full‐thickness skin (FT SoC) growth, emulating human skin structure and barrier function. Upon TiO2 nanoparticle exposure, the system reveals compromised barrier integrity, reduced metabolic activity, increased permeability, and chemokine‐driven
Samantha Costa   +7 more
wiley   +1 more source

Investigating BTEX Emissions in Greece: Spatiotemporal Distribution, Health Risk Assessment and Ozone Formation Potential

open access: yesAtmosphere
This study investigates the atmospheric concentrations, spatiotemporal distribution, the associated health risks and the ozone formation potential of benzene, toluene, ethylbenzene and xylenes (BTEX) across 33 monitoring sites of Greece over a one-year ...
Panagiotis Georgios Kanellopoulos   +2 more
doaj   +1 more source

The study of partial and excess molar volumes for binary mixtures of nitrobenzene and benzaldehyde with xylene isomers from T = (298.15 to 318.15) K and P = 0.087 MPa

open access: yesJournal of Advanced Research, 2016
Based on density measurements, partial and excess molar volumes for binary mixtures of nitrobenzene and benzaldehyde with three isomers of xylene have been measured. The whole range of composition and temperatures from T = (298.15 to 318.15) K at ambient
Hamid R. Rafiee, Farshid Frouzesh
doaj   +1 more source

Evaluation of an urban NMHC emission inventory by measurements and impact on CTM results [PDF]

open access: yes, 2010
This paper presents an evaluation of the consistency of an urban state-of-the-art hydrocarbon (HC) emission inventory. The evaluation was conducted through the comparison of this inventory with hourly HC measurements during two summer months in the ...
Barletta, B   +4 more
core  

Ascorbic Acid Modulates Collagen Properties in Glucocorticoid‐Induced Osteoporotic Bone: Insights into Chemical, Mechanical, and Biological Regulation

open access: yesAdvanced Healthcare Materials, EarlyView.
Osteoporosis from long‐term glucocorticoid (GIOP) use elevates susceptibility to fracture. This study shows GCs impair ascorbic acid (AA) metabolism in osteoblasts, collagen synthesis and extracellular matrix integrity. AA enhanced collagen biochemical and mechanical properties and restored osteoblast and endothelial function. These findings underscore
Micaila DE Curtis   +19 more
wiley   +1 more source

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