摘要:
Unleaded blend composition having a Motor Octane Number (MON) of at least 80 having less than 42% of aromatic compounds, and at least 2% by volume of the total composition of component (a′), which is a substantially aliphatic hydrocarbon refinery stream of MON value of at least 85. At least 70% in total of the stream is branched chain alkanes, the stream being obtained by distillation from a refinery material as a cut having Initial Boiling Point of at least 15° C. and Final Boiling Point of at most 160° C. The Boiling Points are measured according to ASTMID2892. At least 5% of at least one paraffin, aromatic hydrocarbon compound or olefinic hydrocarbon has a bp 60-160° C., with not more than 5% of the total composition of hydrocarbon having a bp more than 160° C. Less than 5% 2,2,3-trimethylbutane or 2,2,3-trimethylpentane is present.
摘要:
Unleaded blend composition having a Motor Octane Number (MON) of at least 80 having less than 42% of aromatic compounds, and at least 2% by volume of the total composition of component (a′), which is a substantially aliphatic hydrocarbon refinery stream of MON value of at least 85. At least 70% in total of the stream is branched chain alkanes, the stream being obtained by distillation from a refinery material as a cut having Initial Boiling Point of at least 15° C. and Final Boiling Point of at most 160° C. The Boiling Points are measured according to ASTMID2892. At least 5% of at least one paraffin, aromatic hydrocarbon compound or olefinic hydrocarbon has a bp 60-160° C., with not more than 5% of the total composition of hydrocarbon having a bp more than 160° C. Less than 5% 2,2,3-trimethylbutane or 2,2,3-trimethylpentane is present.
摘要:
An architecture record can be created for a computer system that includes a plurality of computing devices, each having an operating system. The architecture record includes platform definition architectures each associated with one of the computing devices and the operating system of the computing device, domain reference architectures each associated with one or more of the platform definition architectures and a service performed by the computing device of each platform definition architecture, and channel reference architectures each associated with one or more of the domain reference architectures, wherein the computing devices associated with the one or more domain reference architectures are configured to communicate with each other while performing the respective services associated with the one or more domain reference architectures.
摘要:
Unleaded blend compositions, as well as formulated gasolines containing them have a Motor Octane Number (MON) of at least 80 comprising either: (i) component (a) at least 5% (by volume of the total composition) of at least one hydrocarbon having the following formula I R—CH2—CH(CH3)—C(CH3)2—CH3 I wherein R is hydrogen or methyl, especially triptane, or (ii) at least 2% of component (a′), which is at least one branched chain alkane of MON value of at least 90 and of boiling point 15-160° C. or a substantially aliphatic hydrocarbon refinery stream, of MON value of at least 85, at least 70% in total of said stream being branched chain alkanes, said stream being obtainable or obtained by distillation from a refinery material as a cut having Initial Boiling Point of at least 15° C. and Final Boiling Point of at most 160° C., said Boiling Points being measured according to ASTMD2892, or (iii) at least 10% of component (a″), which is at least one branched chain alkane of 8-12 carbons with at least 4 methyl or ethyl branches The components (a), (a′) and (a″) give rise to reduced emissions to the composition or gasoline on combustion.
摘要:
To improve operation during cutback power mode by reducing gain expansion, sections of a multi-section amplifier are selectively biased. During cutback power condition, fewer than all sections of the multi-section amplifier are biased. Selective biasing reduces power consumption and obtains desired output power. To reduce gain expansion, a bias resistor is provided between one or more sections to establish a small or leakage bias current into non-enabled or non-biased sections. This leakage bias current weakly biases the non-enabled sections allowing small signal amplification by the non-enabled sections. The combined amplification of the enabled section and the weakly biased section provide greater initial gain at lower power input signal levels thereby reducing gain expansion.
摘要:
Compounds of formula (I): PBD-A-Y—X—(Het)na-L-(Het)nb-L-(Het)nc-T-(Het′)nd-L-(Het′)ne-L-(Het′)nf—X′—Y′- A′-PBD′ and salts, solvates and chemically protected forms thereof, are disclosed wherein the PBD units have the formulae (PBD) (PBD′) with the bonds at the 8 position on each molecule bond to the A and A′ groups respectively; A is selected from O, S, NH or a single bond, and each Het and Het′ is respectively an amino-heteroarylene-carbonyl group; X and X′ are both either NH or C (═O)-Q—C(═O)— wherein Q is a divalent group such that HY═R; in a second aspectm the invention comprises compounds of the general formula (II): PBD-A-Y—X—(Het)ng-[L-(Het)nh]nj-X′—Y′-A′-PBD′. Wherein: PBD and PBD′ are as defined above, X and X′ are either NH and C(═O) respectively or C(O) and NH respectively; the other substitutents are defined in the claims. Further aspects of the present invention relate to their use in the manufacture of a medicament for the treatment of a proliferative disease.
摘要:
Compounds of formula (I): formula (I) and salts, solvates, chemically protected forms, and prodrugs thereof, are C disclosed wherein R2 is selected from: an optionally substituted napthyl group; an optionally substituted thiophenyl or furanyl group; and a phenyl group substituted by: one or more chloro or fluoro groups; an ethyl or propyl group; a 4-t-butyl group; a 2-methyl group; or two methyl groups in the 2- and 6- positions.
摘要:
Acetic acid is produced by oxidation of methane with an oxygen-containing gas in the presence of an acid selected from concentrated sulfuric acid and fuming sulfuric acid, a palladium-containing catalyst and a promoter, preferably a copper or iron salt. The addition of a promoter and O2 to a system that includes a palladium-containing catalyst such as PdCl2 increases the rate of acetic acid formation from methane by more than an order of magnitude as compared with prior art and, in addition, inhibits the precipitation of Pd black.
摘要:
A catalyst composition for the selective oxidation of ethane and/or ethylene to acetic acid which composition comprises in combination with oxygen the elements: MOa.Wb.Agc.Ird.Xe.Yf (I) wherein X is the elements Nb and V; Y is one or more elements selected from the group consisting of: Cr, Mn, Ta, Ti, B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Rh, Cu, Au, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, Tl, U, Re and Pd; a, b, c, d, e and f represent the gram atom ratios of the elements such that 0
摘要:
This invention relates to a method of improving the catalytic activity of a freshly made zeolite loaded with gallium ions by first treating with steam and then with hydrogen. Steam and hydrogen treatment may be carried out before or after loading with gallium simultaneously or successively. It has been found that a combination of steam and hydrogen treatments gives high conversions of hydrocarbon feeds and high selectivity to aromatics.