Hyperfine parameters and the pressure dependence of the magnetic transition temperatures of FeRhGehave been investigated. Sample has been prepared using high pressure-high temperature synthesis technique. FeRhGeconsists of two B20 structure phases with close lattice constants.
View Article and Find Full Text PDFDespite the progress made in the treatment of nephrolithiasis, the existing methods of renal calculi destruction are not ideal and have both advantages and disadvantages. Considering the process of high-frequency glow discharge formation on the surface of an electrode and in an electrolyte solution, we obtained the results on the destruction of renal calculi in vitro. It was shown that the destruction of kidney stones by glow discharge plasma was caused by several processes-the plasma induced effect of hydrated electrons and shock wave effect of the electrolyte stimulated by electrical breakdowns in the plasma.
View Article and Find Full Text PDFIn this work, we, for the first time, manufactured a plasma-chemical reactor operating at a frequency of 0.11 MHz. The reactor allows for the activation of large volumes of liquids in a short time.
View Article and Find Full Text PDFWe report heat capacity measurements of SrCu_{2}(BO_{3})_{2} under high pressure along with simulations of relevant quantum spin models and map out the (P,T) phase diagram of the material. We find a first-order quantum phase transition between the low-pressure quantum dimer paramagnet and a phase with signatures of a plaquette-singlet state below T=2 K. At higher pressures, we observe a transition into a previously unknown antiferromagnetic state below 4 K.
View Article and Find Full Text PDFOne of the most strikingly universal features of the high-temperature superconductors is that the superconducting phase emerges in the close proximity of the antiferromagnetic phase, and the interplay between these two phases poses a long-standing challenge. It is commonly believed that, as the antiferromagnetic transition temperature is continuously suppressed to zero, there appears a quantum critical point, around which the existence of antiferromagnetic fluctuation is responsible for the development of the superconductivity. In contrast to this scenario, we report the observation of a bi-critical point identified at 2.
View Article and Find Full Text PDFNon-centrosymmetric superconductors, whose crystal structure is absent of inversion symmetry, have recently received special attentions due to the expectation of unconventional pairings and exotic physics associated with such pairings. The newly discovered superconductors ACrAs (A = K, Rb), featured by the quasi-one dimensional structure with conducting CrAs chains, belongs to such kind of superconductor. In this study, we are the first to report the finding that superconductivity of ACrAs (A = K, Rb) has a positive correlation with the extent of non-centrosymmetry.
View Article and Find Full Text PDFTemperature dependent powder and single-crystal synchrotron diffraction, specific heat, magnetic susceptibility and small-angle neutron scattering experiments have revealed an anomalous response of MnGe. The anomaly becomes smeared out with decreasing Mn content in Mn1-x Co x Ge and Mn1-x Fe x Ge solid solutions. Mn spin state instability is discussed as a possible candidate for the observed effects.
View Article and Find Full Text PDFEquipment of field units or ine meaical service of the Armed Forces with modem medical complexes on the basis of pneumo-frame modules, and procedure of the use. On the basis of experience of medical supply in local wars and modern armed conflicts, when liquidating medical and sanitary disaster consequences the authors revealed the main organizational problems in army echelon of the medical service. It is shown that these problems can be solved by means of deployment of medical units and subunits.
View Article and Find Full Text PDFThe state research and test institute of military medicine of the Ministry of Defence of the Russian Federation celebrates the 85th anniversary. The article is devoted to the anniversary of the newly reconstituted state research and test institute of Military Medicine of the Ministry of Defence of the Russian Federation. The institute was closed down in 2011 and worked exclusively as a structural subdivision of the Kirov Military Medical Academy for tests of ergonomic characteristics of a weapon and military equipment.
View Article and Find Full Text PDFRetroperitoneal surgical approach is the main component of operative intervention. This approach predetermines quality of surgical operation and the risk of intraoperative complications, an opportunity of their prevention. Lymphadenectomy is the unique method allowing authentically to confirm cancer in the lymph nodes and to evaluate a stage of disease.
View Article and Find Full Text PDFStrong granularity-correlated and intragrain modulations of the superconducting order parameter are demonstrated in heavily boron-doped diamond situated not yet in the vicinity of the metal-insulator transition. These modulations at the superconducting state (SC) and at the global normal state (NS) above the resistive superconducting transition, reveal that local Cooper pairing sets in prior to the global phase coherence.
View Article and Find Full Text PDFWe report the basic physical properties of monoclinic Y8Co5 determined by means of magnetic susceptibility, electrical resistivity, and specific heat measurements. The crystal structure of Y8Co5 is monoclinic (P2(1)/c) with lattice parameters a = 7.0582(6) Å, b = 7.
View Article and Find Full Text PDFAn analysis of medical services of NATO and the Medical Service of the Armed Forces of the Russian Federation of modern technology deployment stages of medical evacuation (tents, inflatable structures, shelters, containers, medical armored vehicles, cars, etc.) is presented. Examples of their usage in isolated employment, usage in the group as a mobile medical stations and field hospitals in various conditions, the prospects and directions of development of technical means deployment of medical service are given.
View Article and Find Full Text PDFWhen antiferromagnetism and unconventional superconductivity coexist in CeRhIn(5) there is a significant temperature difference between resistively and thermodynamically determined transitions into the superconducting state. In this state, anisotropic transport near the superconducting transition reveals the emergence of textured superconducting planes that appear without a change in translational symmetry of the lattice. CeRhIn(5) is not unique in exhibiting these behaviors, indicating that textured superconductivity may be a general consequence of coexisting orders in correlated electron materials.
View Article and Find Full Text PDFPaper is devoted to the history of creation of various types of field installations of the tent, mobile medical units and facilities, the experience of their usage in combat. An analysis of approaches to medical support of troops and equipment of the medical service in accordance with the changing nature of military operations in the XX-XI centuries is performed. Description of several generations of means taken to supply is given.
View Article and Find Full Text PDFPresented data is about attendance means of deployment of field medical units and pieces of army-level medical services and disaster medicine Defense Ministry did not ensure compliance with requirements to create optimal conditions for highly effective work of the medical staff, placing the wounded, the use of modern aids and appliances. The prospects of creation of mobile unit for high-availability modular pre-fabricated on the basis of tent structures, pneumoconstructions and removable habitable bodies, containers, tents, pneumocovers till 2020 are analyzed. Livelihood systems provide armor protection against fragments, bullets, flames, damaging factors of chemical and biological weapons.
View Article and Find Full Text PDFJ Phys Condens Matter
October 2010
Pressure-dependent electrical resistivity and ac-calorimetry measurements on single crystals of the heavy-fermion antiferromagnet U(2)Zn(17) at pressures to 5.5 GPa reveal that the low temperature magnetic order changes above ∼3 GPa. The Neél temperature (T(N) = 9.
View Article and Find Full Text PDFJ Phys Condens Matter
March 2011
The lack of superconductivity in several candidate materials that exhibit a non-spin density wave quantum critical point has raised the question of whether the associated spectra of quantum fluctuations are beneficial to forming superconducting electron pairs. Here we discuss the possibility that the prototypical heavy-fermion antiferromagnet CeRhIn5 may be the first example of unconventional superconductors where superconductivity arises from Kondo-breakdown quantum criticality.
View Article and Find Full Text PDFWe synthesized tetragonal α-FeSe by melting a powder mixture of iron and selenium at high pressure. Subsequent annealing at normal pressure results in removing traces of hexagonal β-FeSe, formation of a rather sharp transition to a superconducting state at T(c)∼7 K, and the appearance of a magnetic transition near T(M) = 120 K. Resistivity and ac-susceptibility were measured on the annealed sample at hydrostatic pressure up to 4.
View Article and Find Full Text PDFThe parameters of stability, guest binding reversibility, and Gibbs energy of guest inclusion were determined for clathrates of adamantylcalix[4]arene (1). These data provide a new insight into the structure-property relationships in vapor sensor applications of clathrate-forming hosts. A thin layer of 1, used in the quartz microbalance (QCM) sensor, demonstrates a selectivity for organic vapors, which depends on the regeneration technique after the guest binding.
View Article and Find Full Text PDFSci Technol Adv Mater
December 2008
Superconducting boron-doped diamond samples were synthesized with isotopes of B, B, C and C. We claim the presence of a carbon isotope effect on the superconducting transition temperature, which supports the 'diamond-carbon'-related nature of superconductivity and the importance of the electron-phonon interaction as the mechanism of superconductivity in diamond. Isotope substitution permits us to relate almost all bands in the Raman spectra of heavily boron-doped diamond to the vibrations of carbon atoms.
View Article and Find Full Text PDF