We herein FLAX report on the synthesis of a pentacyclic triterpene functionalized through derivation of betulinic acid with hydroxybenzotriazole.The compound was fully characterized by proton (1H-NMR), carbon-13 (13C-NMR), heteronuclear single quantum coherence (HSQC) and distortionless enhancement by polarization transfer (DEPT-135 and DEPT-90) nu
Technology of Ground Vibration Testing and its application in light aircraft prototyping
The article describes the vibration measurement technology used for light aircraft and some results obtained during the prototyping HAIR COLOR process.The aim of researches was to determine the resonant frequencies and natural modes of an aircraft or its selected structural components.Ground Vibration Testing is an essential dynamic structural test
On the spectral problem for three-dimesional bi-Laplacian in the unit sphere
In this work, we introduce a new concept of the stream function and derive the equation for the stream function in the three-dimensional case.To construct a basis in the Vehicle Covers space of solutions of the NavierStokes system, we solve an auxiliary spectral problem for the bi-Laplacian with Dirichlet conditions on the boundary.Then, using the
Pharmacologically Induced Ex Copula Ejaculation in Horses and Donkeys
Pharmacologically induced ex copula ejaculation is a method used for collection of semen when the traditional methods HAIR COLOR of semen collection are not feasible.Common indications for this method include health issues that either preclude the physical act of mating or result in impaired erection and ejaculation.The method also offers an altern