Saikosaponin (SS) a is a compound with various pharmacological properties and easily degraded into SSb1 and SSg in acid condition. In present work another two new degradation products of SSa formed under acid hydrolytic condition were detected and isolated by analytical and semi-preparative liquid chromatography technology, furthermore their structures were characterized as hydroxyl-saikosaponi...

Despite numerous computational advances over the last few decades, molecular dynamics still favors explicit (and thus easily-parallelizable) time integrators for large scale numerical simulation. As a consequence, computational efficiency in solving its typically stiff oscillatory equations of motion is hampered by stringent stability requirements on the time step size. In this paper, we presen...

We examine two semi-analytical methods for estimating the baryon asymmetry of the universe (BAU) generated in scenarios of “local” electroweak baryogenesis (in which the requisite baryon number violation and CP violation occur together in space and time). We work with the standard electroweak theory augmented by the addition of a CP violating dimension six operator. We work in the context of a ...

We present semi-analytic models of galactic outflows that are constrained by available observations on high redshift star formation and reionization. Galactic outflows are modeled in a manner akin to models of stellar wind blown bubbles. Large scale outflows can generically escape from low mass halos (M . 10 M ) for a wide range of model parameters while this is not the case in high mass halos ...

The study of heat transfer in ground exchangers (GHEs) considering the fluid advection inside pipes; between and through grout material; thermal interaction GHEs is a challenging task. present paper presents new semi-analytical method that takes into account aforementioned effects to consider both short- long-term GHEs. was studied by transient multipole expansion time-dependent temperatures an...

Using the Variational Iteration Method (VIM) 3D static deflection problem of composite beams subject to concentrated tip and uniformly distributed loads is analysed, resulting in a system coupled non-homogeneous ordinary differential equations. general Lagrange multiplier, identified by variational theory, special type functional constructed. By making an initial approximation form Maclaurin se...

There is a rising interest amongst Australian farmers to use disc seeders due their ability operate in high residue conditions and at higher speeds, commonly the range of 12 15 km h−1. This paper reports on developing an analytical discrete element method (DEM) force prediction model suited rotating flat blade operating different sweep tilt angles. To validate models, field experiments were car...