Results 61 to 70 of about 17,030 (240)
Highly Acyclic Selective Cobalt Catalysts for Butadiene Dimerization
ChemCatChem, EarlyView.A series of 11 cobalt(II) complexes were prepared and optimised for the linear selective dimerisation of butadiene to give 5‐methyl‐1,3,6‐heptatriene as the major product. The catalysts operated under mild reaction conditions, gave good reactivity and did not require the use of organometallic activators.
Joseph H. P. Cockcroft +5 more
wiley +1 more source
Proceedings of 8th European VLBI Network Symposium — PoS(8thEVN), 2007 In this article I will briely review the current status of radio observations of nearby supernovae and their remnants. This review will initially address observations of the radio light curves of nearby core-collapse supernovae, followed by a more detailed summary of recent Very Long Baseline Interferometric observations of the expansion of nearby ...
openaire +2 more sources
An Accelerating Universe without Lambda: Delta Gravity Using Monte Carlo
Universe, 2019 A gravitational field model based on two symmetric tensors, g μ ν and g ˜ μ ν , is studied, using a Markov Chain Monte Carlo (MCMC) analysis with the most updated catalog of SN-Ia.
Jorge Alfaro +2 more
doaj +1 more source
Chemistry – A European Journal, EarlyView.A heavy‐atom free BODIPY photosensitizer localizing in the endoplasmic reticulum that efficiently generates singlet‐oxygen causing cell death upon light activation. Abstract The organelle‐localized photodynamic therapy (PDT) has become a promising strategy for efficient cancer treatment. The photogeneration of reactive oxygen species in the endoplasmic
Karolina Wrochna +10 more
wiley +1 more source
Multi-Wavelength Observations and Modeling of Loop I
Galaxies, 2018 The article aims to overview the origin and current dynamical state of a giant structure on the northern galactic sky—the radio Loop I extending from ≈ − 45 ∘ to ≈ + 45 ∘ in longitudes and up to ≈ 80 ...
Yuri Shchekinov
doaj +1 more source
ChemPlusChem, EarlyView.Biscyclometalated platinum(II) complex bearing a persistent radical is reported. The complex possesses a doublet emission excited state (D2) with a short excited state lifetime at room temperature and a long excited triplet (T1) excited state lifetime at 77 K.
Sandhya Verma +6 more
wiley +1 more source
The physics of asymmetric supernovae and supernovae remnants [PDF]
Advances in Applied Physics, 2018 We model the circumstellar medium with four density profiles: hyperbolic type, power law type, exponential type and Gaussian type. We solve analytically or numerically the four first-order differential equations which arise in the framework of the classical thin layer approximation.
openaire +4 more sources
Astrophysics and Space Science, 2012 18 pages, 5 figures.
Massimo Turatto +3 more
openaire +3 more sources
Constraining the minimally extended varying speed of light model using time dilations
Frontiers in Astronomy and Space SciencesThe Robertson–Walker (RW) metric, derived from the cosmological principle and Weyl’s postulate, characterizes the ΛCDM cosmological model. Traditionally, in this framework, the assumption of a constant speed of light leads to specific cosmological time ...
Seokcheon Lee
doaj +1 more source
Galaxies, 2019 We have shown that the Hubble constant H 0 embodies the information about the evolutionary nature of the cosmological constant Λ , gravitational constant G , and the speed of light c .
Rajendra P. Gupta
doaj +1 more source