γ-Valerolactone (GVL) is readily accessible by catalytic hydrogenation of carbohydrate-derived levulinic acid (LA) and an attractive biobased chemical with a wide range applications in both the (e.g., as biomass-derived solvent) transportation fuel sector. In this study, we used isotopic labeling experiments to provide insights into pathways involved conversion LA GVL under different reaction c...

We consider a D4 − D8 − D8 brane construction which gives rise to a large N QCD at sufficiently small energies. Using the gravity dual of this system, we study chiral phase transition at finite chemical potential and temperature and find a line of first order phase transitions in the phase plane. We compute the spectral function and the photon emission rate. The trace of the spectral function i...

We study the fermionic sector of a probe D8-brane in the supergravity background made of D4-branes compactified on a circle with supersymmetry broken explicitly by the boundary conditions. At low energies the dual field theory is effectively four-dimensional and has proved surprisingly successful in recovering qualitative and quantitative properties of QCD. We investigate fluctuations of the fe...

Using holographic QCD based on D4-branes and D8-anti-D8-branes, we have computed couplings of glueballs to light mesons. We describe glueball decay by explicitly calculating its decay widths and branching ratios. Interestingly, while glueballs remain less well understood both theoretically and experimentally, our results are found to be consistent with the experimental data for the scalar glueb...

In this work, we first derive the corrections to instanton configuration of flavored gauge field in D4--D8 model with generic flavor numbers. Then, as on D8-branes represents equivalently baryon model, keeping our hand, systemically study spectrum baryon, heavy-light or meson and find it is possible fit experimental data model. We also briefly outline how include interaction glueball correction...

The D8 jet transport configuration is presented. Focus is on the aerodynamic characteristics of its distinguishing features: the wide “double-bubble” fuselage with beneficial pitching moment and carryover lift characteristics, the nearly-unswept wing and reduced cruise Mach number, and the boundary layer ingesting rear engine installation together with the twin “pi-tail” configuration. The meri...