Results 61 to 70 of about 10,619 (244)

Alternative fuels for spark-ignition engines: mixing rules for the laminar burning velocity of gasoline-alcohol blends [PDF]

, 2012
Experimental measurements of the laminar burning velocity are mostly limited in pressure and temperature and can be compromised by the effects of flame stretch and instabilities.
Demuynck, Joachim, Galle, Jonas, Sileghem, Louis, Vancoillie, Jeroen, Verhelst, Sebastian   +4 more
core   +2 more sources

Chain Versus Ring: Characterization of a Meta‐Phenylene Ladder Polymer and Its Octameric Macrocycle

Chemistry – A European Journal, EarlyView.
The synthesis and comprehensive spectral and photophysical analysis of a methyl‐substituted ladder meta‐phenylene macrocycle (MeLMMP) and its polymer analogue (MeLPMP) show that, despite differing topologies (macrocycle vs. polymer), both display nearly identical electronic and photophysical properties due to cross‐conjugation.
Paulo D. Nunes Barradas, Hauke J. Jötten, Ngoc B. B. Nguyen, Ullrich Scherf, J. Sérgio de Seixas de Melo   +4 more
wiley   +1 more source

A walk in the park—Identifying healthy greenspaces using scents

PLANTS, PEOPLE, PLANET, EarlyView.
As urbanisation accelerates globally, access to nature is increasingly recognised as vital for public health and wellbeing. We captured and analysed plant‐emitted airborne ‘scent signatures’ across Oxford's urban greenspaces to assess their potential health relevance.
William T. Kay, Anya Lindström Battle, Mahal Humberstone, Molly Tucker, Kieran E. Storer, Geoffrey Kite, Katherine Willis   +6 more
wiley   +1 more source

Matrix‐Isolation Electron Paramagnetic Resonance Studies of Radical Ions and Neutral Radicals Generated by Radiolysis of Organic Molecules at Cryogenic Temperatures

The Chemical Record, EarlyView.
By selecting an appropriate matrix and irradiating the matrix containing a trace amount of solute at low temperatures, ionic or neutral radicals derived from the solute can be generated and trapped in the matrix. EPR spectroscopy of these samples yields highly detailed information on the radicals, inaccessible by other experimental techniques. Electron
Kenji Komaguchi
wiley   +1 more source

Estimates of Cl atom concentrations and hydrocarbon kinetic reactivity in surface air at Appledore Island, Maine (USA), during International Consortium for Atmospheric Research on Transport and Transformation/Chemistry of Halogens at the Isles of Shoals [PDF]

, 2007
Average hydroxyl radical (OH) to chlorine atom (Cl·) ratios ranging from 45 to 119 were determined from variability‐lifetime relationships for selected nonmethane hydrocarbons (NMHC) in surface air from six different transport sectors arriving at ...
Fischer, Emily V., Pszenny, Alexander A. P., Russo, Rachel S., Sive, Barkley C., Varner, Ruth K.   +4 more
core   +1 more source

Polymer-solvent interaction parameters of SBS rubbers by inverse gas chromatography measurements [PDF]

, 2011
The solubility parameters of two SBS commercial rubbers with different structures (lineal and radial), and with slightly different styrene content have been determined by inverse gas chromatography technique.
Diaz, I., Díaz Moreno, Francisco Ismael, Ovejero, G., Romero, M.D.   +3 more
core   +3 more sources

A Homologous Series of Cobalt, Rhodium, and Iridium Metalloradicals [PDF]

, 2012
We herein present a series of d7 trimethylphosphine complexes of group 9 metals that are chelated by the tripodal tetradentate tris(phosphino)silyl ligand [SiP^(iPr)_3]H ([SiP^(iPr)_3] = (2_(-i)Pr_2PC_6H_4)_3Si^–).
Peters, Jonas C., Takaoka, Ayumi
core   +1 more source

Electronic Configuration and Reactivity: First Semi-Quantitative Assessment of Relative Reactivities for the 3d Transition Metal Vapors Toward p-Bromotoluene in a Methylcyclohexane Solution

CHIMIA, 1990
A specifically designed metal vapor synthesis apparatus makes possible the semi-quantitative assessment of the reactivities for the elements of the first transition series toward p-bromotoluene kept in a ?118°C solution of methylcyclohexane.
Jean-Claude Négrel, Robert W. Zoellner, Michel Chanon   +2 more
doaj   +5 more sources

Single‐Atom Cobalt Species on Curved Hollow Carbon Sphere: Breaking Linear Scaling Relationship Limitations in Electrocatalytic Deactivation of Dilute Antibiotic Pollutants

Advanced Science, Volume 13, Issue 16, 18 March 2026.
A cobalt (Co)‐SACs consisting of single‐atom Co anchored on a nitrogen‐doped hollow porous carbon sphere (Co1/N‐HCS) is fabricated for electrocatalytic hydrodechlorination of dilute antibiotics. The hollow porous architecture of N‐HCS concentrates the antibiotics, while its curved surface promotes proton transfer at the Co1 site via localized electric ...
Jiahong Zou, Shenbin Zheng, Chunyang Dan, Huimin Sui, Wenyang Fu, Xiaoshu Lv, Boping Ren, Guangming Jiang, Hong Liu   +8 more
wiley   +1 more source

Aromatization and isomerization of methylcyclohexane over Ni catalysts supported on different supports

Green Energy & Environment, 2019
In this work, nickel metal supported on different supports (SiO2, Al2O3, ZSM-5) were prepared by spraying nickel nitrate on the supports and calcined at 873 K. Then, they were characterized by XRD, XRF, N2 adsorption–desorption, NH3-TPD, MCH-TPD, H2-TPR,
Ye Song, Wei Lin, Xingcui Guo, Linlin Dong, Xindong Mu, Huiping Tian, Lei Wang   +6 more
doaj   +1 more source