Positive and negative parity hyperons in nuclear medium [PDF]
, 2015 The effects of nuclear medium on the residue, mass and self energy of the positive and negative parity $\Sigma$, $\Lambda$ and $\Xi$ hyperons are investigated using the QCD sum rule method.
Azizi, K., Er, N., Sundu, H.
core +2 more sources
‘User-friendly’ primary phosphines and an arsine: synthesis and characterization of new air-stable ligands incorporating the ferrocenyl group [PDF]
, 2002 Reaction of FcCH₂CH₂P(O)(OH)₂ or FcCH₂P(O)(OH)(OEt) [Fc=Fe(η⁵-C₅H₄)(η⁵-C₅H₅)] with excess CH₂N₂ followed by reduction with Me₃SiCl–LiAlH₄ gives the air-stable primary phosphines FcCH₂CH₂PH₂ and the previously reported analogue FcCH₂PH₂ in high yields ...
Alley, Steven R., Henderson, William
core +2 more sources
Vacuum polarization and the geometric phase: Gauge invariance [PDF]
, 1997 A nonperturbative approach to the vacuum polarization for quantized fermions in external vector potentials is discussed. It is shown that by a suitable choice of counterterms the vacuum polarization phase is both gauge and renormalization independent ...
Mickelsson, Jouko
core +3 more sources
Active Carbon-Based Electrode Materials from Petroleum Waste for Supercapacitors
C, 2022 A supercapacitor is an energy-storage device able to store and release energy at fast rates with an extended cycle life; thus, it is used in various electrical appliances.
Abdualilah Albaiz +5 more
doaj +1 more source
Challenges in Petroleum Characterization—A Review
Energies, 2022 252 literature sources and about 5000 crude oil assays were reviewed in this work. The review has shown that the petroleum characterization can be classified in three categories: crude oil assay; SARA characterization; and molecular characterization.
Ivelina Shishkova +7 more
doaj +1 more source
Vacuum distillation residue upgrading by an indigenous Bacillus cereus [PDF]
Journal of Environmental Health Science and Engineering, 2013 Biological processing of heavy fractions of crude oils offers less severe process conditions and higher selectivity for refining. Biochemical Processes are expected to be low demand energy processes and certainly ecofriendly.A strain of biosurfactant producing bacterium was isolated from an oil contaminated soil at Tehran refinery distillation unit ...
Tabatabaee, Mitra +1 more
openaire +2 more sources
Effect of Silica, Activated Carbon, and Alumina Supports on NiMo Catalysts for Residue Upgrading
Energies, 2020 The effect of different supports such as silica (SBA-15), activated carbon (AC), and mesoporous alumina (Al2O3) on catalytic activities of hydrotreating nickel molybdenum (NiMo) catalysts was demonstrated for upgrading vacuum residue. Nitrogen adsorption-
Kirtika Kohli +3 more
doaj +1 more source
Renormalised Chern-Weil forms associated with families of Dirac operators
, 2006 We provide local expressions for Chern-Weil type forms built from superconnections associated with families of Dirac operators previously investigated in work by S. Scott and later work by S. Scott and the second author.
Mickelsson, Jouko, Paycha, Sylvie
core +2 more sources
Peripherally-metallated porphyrins: meso-n1-porphyrinyl-platinum(II) complexes of 5,15-diaryl- and 5,10,15-triarylporphyrins [PDF]
, 2002 Attempted metathesis reactions of peripherally-metallated meso-η1-porphyrinylplatinum(II) complexes such as trans-[PtBr(NiDPP)(PPh3)2] (H2DPP = 5,15-diphenylporphyrin) with organolithium reagents fail due to competitive addition at the porphyrin ring ...
Arnold, Dennis +2 more
core +2 more sources
Sriwijaya Journal of Environment, 2020 Vacuum residue is a waste of the production process in the petroleum refining industry. Even though vacuum residue is waste, it still contains hydrocarbon compounds that can be reused as a petroleum derivatives products that have commercial value ...
Aditya Retno Utami +3 more
doaj