Double longitudinal-spin asymmetries in J/ψJ/\psi production at RHIC

The double longitudinal-spin asymmetry, $A_{LL}$, of the $J/\psi$ production in polarized proton-proton collisions is presented in this paper at QCD next-to-leading order. It is found that the obtained values of $A_{LL}$ are in general consistent with the PHENIX measurements. Various sets of the long-distance matrix elements (LDMEs) are employed in our calculation to study the possible theoretical uncertainties. It is found that, for p_t<5\gev, all these LDMEs lead to almost the same results, which are within the tolerance of the experimental data uncertainties

Truncation of Unitary Operads

We introduce truncation ideals of a $\Bbbk$-linear unitary symmetric operad and use them to study ideal structure, growth property and to classify operads of low Gelfand-Kirillov dimension

The Research about Fire Prevention of Vehicle Refuelling Stations

AbstractFuel oil and gas offered by vehicle refuelling stations have combustion and explosion characteristics, serious casualties and economic losses often caused by fire. The research about oil and gas fire risk, refuelling process and facilities, proposing appropriate fire prevention measures possess great significance for reducing refuelling stations’ fire losses, and ensuring the safety of the station and surrounding environment

One-compound-multiple-targets strategy to combat Alzheimer’s disease

AbstractThe present one-drug-one-target paradigm in drug discovery has been considered partially responsible for the more-funding-less-drug predicament in modern pharmaceutical industry. To hit the multiple targets implicated in complex diseases, two strategies, based on multicomponent or single-ingredient, are conceivable. Although the latter is more difficult to be fulfilled than the former, the recent progress made in the fight against Alzheimer’s disease (AD) has brought us the first light of success of the latter strategy. In this review, both synthetic and natural multipotent agents are described, which hit two or more targets implicated in AD, e.g., acetylcholinesterase, monoamine oxidase, amyloid-β, τ protein, metal ions and reactive oxygen species. Nevertheless, due to the potential risks in safety, absorbability and pharmacokinetics of synthetic multipotent agents, natural counterparts seem more promising in the future development