In this research at the first Afrin drug or and its fullerene derivative were optimized. Afrin is a nasal congestion drug that acts by contraction of the blood vessels of the arteries and veins. Afrin acts directly on the nasal vessels. Eclipse of the blood vessels in your nose and the sinuses causes the water to be collected and the nasal congestion is reduced. And this medicine is used for co...

Three-dimensional counter-diffractometer data and a full-matrix least-squares method have been used to refine the crystal structure of a sub-silicic hastingsite in the space group C2/rn. The chemical composition of the amphibole is Na~.95K~.a~Cax.~4(Mg1.17Fe~+7Mn~.~4Ti~.39Fe~9A~.5~)Si5.2~A~2.~3~22.5~(~H)x.a4 with ceil parameters a = 9"8659(4), b = I8"OI39(8), c = 5'3545(2)-&, and fi = IO5O82(1)...

background: reduced time and appropriate bond strength of brackets is one of the most important aspects of orthodontic treatments. prolonged halogen light curing for bonding of brackets is undesirable, so the purpose of this study was to compare the shear bond strength of brackets bonded with halogen light and plasma arc system. materials and mehods: this was an experimental in vitro study. a t...

The sum of external angles of a polygon is always constant, π 2 . There are several elementary proofs of this fact. In the similar way, there is an invariant in polyhedron that is π 4 . To see this, let us consider a regular tetrahedron as an example. Tetrahedron has four vertices. Three regular triangles gather at each vertex. Developing the tetrahedron around each vertex, there is an open ang...

We have previously published on a new triazolic phosphonic α-amino ester in position 4 the triazole ring of naphthalene ester. The aim present paper was to describe its crystallographic study by XRD. crystal structure naphthalen-2-yl 1-(benzamido(diethoxyphosphoryl)methyl)-1H-1,2,3-triazole-4-carboxylate determined single-crystal X-ray diffraction. This compound crystallizes monoclinic system, ...