Spin-guides and spin-splitters: Waveguide analogies in one-dimensional spin chains

Here we show a direct mapping between waveguide theory and spin chain transport, opening an alternative approach to quantum information transport in the solid-state. By applying temporally varying control profiles to a spin chain, we design a virtual waveguide or 'spin-guide' to conduct individual spin excitations along defined space-time trajectories of the chain. We explicitly show that the concepts of confinement, adiabatic bend loss and beamsplitting can be mapped from optical waveguide theory to spin-guides (and hence 'spin-splitters'). Importantly, the spatial scale of applied control pulses is required to be large compared to the inter-spin spacing, and thereby allowing the design of scalable control architectures.Comment: 5 figure

Pharmacological justification of the composition of active ingredients in the composition of «Molozol» gel

Today, in connection with the rapid increase in the number of skin diseases complicated by secondary microbial and fungal infection, the creation of new drugs with a complex dermatomycosis effect for their local use is gaining particular relevance. In modern dermatological practice, mostly soft dosage forms are used. The wide use of soft medicinal forms is due to the presence of some advantages: high local concentration in the skin, relative economy and manufacturability of these means. However, on the modern Ukrainian pharmaceutical market, the range of drugs with a complex dermatomycosis effect is limited. This makes it necessary to find new means for local application in dermatitis with complicated fungal pathology. The aim of our research is an experimental ground of rational composition of operating substances in a gael under the conditional name «Molozol» for treatment of dermatomycoses. Gel was prepared on general rules by preparations of soft medical forms. Taking into account physical and chemical properties of operating substances, in particular their solubility, sucking, salicylic and sorbic acid was entered as a solution in propylene glycol and entered in the basis procured in advance for gel. With the aim of ground of rational concentration milk, salicylic and sorbic acid in the combined gel of «Molozol», and also study of his biological activity were conducted microbiological and toxicological. Determination of the antibacterial properties of the gel was carried out by diffusion in agar using reference strains of microorganisms Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, Candida albicans ATCC 885/653. The rational composition of the active substances of the gel under the conventional name «Molosol» for the treatment of dermatomycosis was experimentally substantiated. Based on the data of microbiological studies, the concentration of active substances – lactic acid, salicylic acid and sorbic acid in the composition of the gel «Molosol» was justified. With the combination of active substances salicylic acid 8%, lactic acid 10%, for sorbic acid concentration 0.5%, «Molosol» gel shows the most pronounced antimicrobial and fungicidal activity against the tested strains of microorganisms. The index of acute toxicity when applied to the skin of animals was determined, which proved that the developed soft drug «Molosol» in the form of a gel belongs to the IV class of low-toxic substances. The combined gel «Molosol» is promising for further research as an antimicrobial and antifungal agent with keratolytic properties

Radiological efficacy of nontraditional countermeasures on peat-bog soils

In the laboratory experiments the parameters of radiological effectiveness of countermeasures such as sanding, adding of ferrocyanides and ferrocyanides-bentonite sorbent into the peat-bog soils of Rokytne district of Rivne region, which are characterized by an abnormally high transfer of 137Cs from soil to plants were estimated. The applied countermeasure efficiencies are presented during 26 months of the vegetation period

New linear-chain compounds based on azamacrocyclic copper(II) complex and halogenide ions

X-Ray analysis revealed that the participation of functional groups of the macrocycle in hydrogen bonding leads to the formation of crystal lattices with unprecedent linear polymeric chains ... Cu ... Hal ... Cu ... Hal .... The presence of Cu--Hal interaction confirmed by spectroscopic methods makes these compounds promising for development of new materials possessing anisotropic physical properties.</p

Assessment of radiological effectiveness of countermeasures on peat-bog soils of northwest Polissya of Ukraine

During the period of 3 years (2013 - 2015) in terms of finely-making spot field experiments coefficients of accumulation of 137Cs (control 6,1 ± 0,8) after a single application of agrochemical countermeasures on peat-bog soils in Rokytne district, Rivne region, characterized by abnormally high bioavailability of cesium radioisotopes were obtained. In the late phase of the elimination of the Chernobyl accident, radiological averaged efficiency sandsing (175 - 200 t/ha), introduction of ferrocyn (0,2 t/ha) did not differ significantly from unity and amounted to 0,8 - 1,6 times. Liming (chalk 4 t/ha) and the introduction of peat ash (5 t/ha) reduced the 137Cs content in vegetation in 1,7 - 1,9 times. Highest radiological efficiency was achieved after applying mixture of chalk-ferrocin (4 + 0,2 t/ha) - 4,4 ± 2,0 times and ferrocin-bentonite sorbent (30 t/ha) - 7,0 ± 2,0 times

Immobilization of 90Sr and 137Cs in soils, contrasted by properties

Assessments of 90Sr and 137Cs immobilization in 15 soils, contrasted by their physical-and-chemical proper-ties, and granulometric composition have been analyzed. Radionuclides have been introduced into soils in the initial water-soluble form. Sequential extraction of soils has been carried out after half and 22 years of radionu-clide depositing in soils. Principal differences of radionuclide speciation in soils, significantly different intensity of 90Sr and 137Cs immobilization in soils, as well as the role of soils physical-and-chemical properties, and granu-lometric composition are discussed

New linear chain compounds based on an aza macrocyclic copper(ii) complex with halide ions

We have shown by X-ray diffraction analysis that participation of functional groups on the macrocycle in formation of hydrogen bonds promotes formation of crystal lattices with previously undescribed linear polymer chains ⋯Cu⋯Hal⋯Cu⋯Hal⋯. We have used spectral methods to confirm the presence of a Cu-Hal interaction, which makes these compounds promising for design of new materials with anisotropic physical properties.</p

Magnetic properties and structure of polynuclear compounds based on macrocyclic azacyclam complexes of nickel(II) and bridging oxalate ions

By X-ray diffraction analysis, we have established the structure of a binuclear complex of nickel(II) with an azacyclam ligand and a bridging oxalate ion. Study of the magnetic properties of a series of complexes of this type with related macrocyclic ligands has allowed us to observe antiferromagnetic coupling between the metal ions and a magnitude of the exchange integral J that varies in the range from -11.8 cm-1 to -25.6 cm-1. We have shown that, despite the close structural parameters of the macrocyclic ligands, the complexes are characterized by different magnetochemical behavior.</p