Spin squeezing and quantum correlations

We discuss the notion of spin squeezing considering two mutually exclusive classes of spin-s states, namely, oriented and non-oriented states. Our analysis shows that the oriented states are not squeezed while non-oriented states exhibit squeezing. We also present a new scheme for construction of spin-s states using 2s spinors oriented along different axes. Taking the case of s=1, we show that the ‘non-oriented’ nature and hence squeezing arise from the intrinsic quantum correlations that exist among the spinors in the coupled state.     

Analysis of glycosides of Allochruza gypsophiloides in the preparation “Allokhrozid” by chromatospectrophotometry

The possibility has been shown of using a readily available method for estimating the level of the main glycoside of the organs of the plant soapwort — acanthophylloside B — in commercial products used in the food and medical industries, and also in samples of the preparation Allokhrozid. The amount of the individual glycoside was calculated in relation to a standard sample of acanthophylloside B.Tashkent Pharmaceutical Institute. Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 254–256, March–April, 1993.     

Theory of sheath in a collisional multi-component plasma

The aim of this brief report is to study the behaviour of sheath structure in a multi-component plasma with dust-neutral collisions. The plasma consists of electrons, ions, micron size negatively charged dust particles and neutrals. The sheath-edge potential and sheath width are calculated for collisionally dominated sheath. Comparison of collisionless and collisionally dominated sheath are made.     

Analysis of a shielded TE011 mode composite dielectric resonator for stable frequency reference

Analysis of a TE₀₁₁ mode composite sapphire-rutile dielectric resonator has been carried out to study the temperature variation of resonance frequency, close to the Cs atomic clock hyperfine frequency of 9.192 GHz. The complementary behavior of dielectric permittivity with temperature of the composite has been exploited to obtain the desired turning point in the resonant frequency. The frequency of the composite structure is found to be independent of the shield diameter beyond four times the puck diameter.     

Estrogenic Activity as a Function of Chemical Structure in Haplophyllum Quinoline Alkaloids

The estrogenic activity of 15 quinoline alkaloids isolated from plants of theHaplophyllumgenus and two derivatives was studied. These compounds exhibit estrogenic activity that depends on the Type of heterocyclic skeleton, N atom basicity, and substituent.