Combined Electromagnetic Suspensions with Reduced Energy Consumption for Levitation Vehicles

Technical Physics - At present, the development of magnetic levitation transportation is conducted based on electromagnetic and electrodynamic suspensions the technical and commercial...     

Light Higgs boson in the two-doublet model featuring explicit <Emphasis Type="Italic">CP</Emphasis> violation

The most general form of an effective two-doublet Higgs potential whose parameters are complex-valued and whose CP invariance is violated explicitly in the minimal supersymmetric model caused by Higgs boson interaction with third-generation squarks is considered. Higgs boson states are obtained and their masses are calculated, along with the decay widths of the lightest Higgs boson and the cross section for its production, in the case of substantial mixing between the CP-even states h and H and the CP-odd state A.     

Disperse systems based on chloracetophos in the low concentration range: self-organization,physicochemical properties and influence on representatives of higher plants and hydrobionts

A set of physicochemical methods was used to establish that aqueous solutions of chloracetophos fungicide and bactericide (1) in the range of calculated concentrations from 1?10^–18 to 1?10^–4 mol L^–1 are disperse systems in which a dispersed phase hundreds of nanometers in size is formed above and below a threshold concentration of 1?10^–9 mol L^–1. Upon dilution disperse systems 1 are capable of non-monotonic changing the physicochemical properties and changing the toxicity profile (inhibition–stimulation) when influencing the growth and development of unicellular algae Chlorella vulgaris. The formation of domains and nanoassociates is accompanied by the appearance in the UV spectrum of an absorption band at 210–300 nm with a maximum at ~220 nm (A₂₂₀). The interrelated concentration dependences of A₂₂₀, the size of the dispersed phase, and electrical conductivity indicates that the observed spectral features of systems 1 are caused by the properties of the domains and nanoassociates.     

Features of self-organization and biological properties of solutions of citric and succinic acids in low concentrations

Russian Chemical Bulletin - A relationship between the nonmonotonic concentration dependences of the size of the dispersed phase (nanoassociates), physicochemical properties (electric conductivity,...     

Supersymmetric corrections to the higgs sector in the minimal supersymmetric standard model featuring explicit <Emphasis Type="Italic">CP</Emphasis> violation

Explicit CP violation in the Higgs sector of the minimal supersymmetric standard model can be introduced owing to the interaction of Higgs bosons with third-generation scalar quarks. Supersymmetric corrections to effective-potential parameters at various values of the masses \(M_{\tilde Q} ,M_{\tilde U} \), and \(M_{\tilde D} \) are calculated by the effective-potential method. It is shown that, in this case, the potential parameters may differ strongly from those in the case of degenerate mass parameters of the scalar sector of the minimal supersymmetric standard model. This leads to a weak dependence of observables on the CP-violation phase.     

Violation of CP invariance in the two-doublet higgs sector of the MSSM

Problems of substantiation and investigation of CP violation in models with the extended Higgs sector are discussed. The general form of the effective two-doublet Higgs potential with complex parameters whose CP invariance is violated both explicitly and spontaneously is considered. For the special case of the two-doublet Higgs sector of the minimum supersymmetric model in which the CP invariance of the effective potential is violated by the interaction of Higgs fields with third generation scalar quarks, the physical states of Higgs bosons, their masses and interaction constants are obtained. The basic phenomenological scenarios and predictions for investigation of the properties of the Higgs sector are considered.     

Synthesis of New Photoswitchable Tectons Based on Thiacalix[4]arene Azo Derivatives in the 1,3-<Emphasis Type="Italic">Alternate Conformation</Emphasis>

The paper describes the first synthesis of molecular tectons, a series of ligands based on thiacalix[4]arenes in the 1,3-alternate stereoisomeric form containing photoswitchable azo groups in the side chain and carboxyl groups as potential binding sites for the synthesis of photoswitchable complexes and coordination polymers. In the case of p-tert-butylcalixarenes, the convergent approach is preferred.     

Membrane transport of dicarboxylic and α-hydroxy carboxylic acids induced by α-amino phosphonates

New -amino phosphonates containing different alkyl and aryl substituents at the -carbon atom were synthesized in high yields by the Kabachnik—Fields and Pudovik reactions. These compounds were studied as carriers of several -hydroxy carboxylic and dicarboxylic acids through liquid impregnated membranes. These -amino phosphonates studied are capable of molecular recognition of oxalic acid among structurally similar -hydroxy carboxylic and dicarboxylic acids. The efficiency and selectivity of mass transfer of oxalic acid increase with an increase in the lipophilicity of the -amino phosphonate.     

Higgs bosons in the two-doublet model involving <Emphasis Type="Italic">CP</Emphasis> violation

An effective two-doublet Higgs potential that involves complex-valued parameters and whose CP invariance is violated both explicitly and spontaneously is considered. The problem of diagonalizing the mass term of this potential at a local minimum is solved. The eigenstates of Higgs bosons and their mass spectrum are obtained for the special case of the two-doublet Higgs sector of the minimal supersymmetric model, where the CP invariance of the effective potential is violated owing to the interactions of the Higgs fields with the third-generation scalar quarks.