A generator of electrical discharges in water

A semiconductor high-voltage pulse generator for the electric-discharge water purification is described. It is based on a low-voltage capacitor storage, step-up pulse transformer, and high-voltage output circuit with a recuperation section returning inefficiently used energy to the power source of the capacitor storage.     

Structural relaxation and related viscous flow of Zr–Cu–Al-based bulk glasses produced from the melts with different glass-forming ability

The relaxation ability of Zr₄₆(Cu_4/5Ag_1/5)₄₆Al₈ and Zr₄₆Cu₄₆Al₈ bulk glasses displaying different glass-forming ability (GFA) in the liquid state has been studied by measurements of the shear modulus, creep and stress relaxation. It has been found that the four-component alloy with higher GFA always displays higher relaxation ability in the glassy state. This fact does not seem to correlate with the amount of the frozen-in free volume as dependent on the GFA. It has been argued that the relaxation centers responsible for structural relaxation and related viscous flow are similar to dumbbell interstitials in simple metals. Such an approach precisely describes the kinetics of shear modulus relaxation and reasonably agrees with a phenomenological interpretation of structural relaxation-induced viscoelastic phenomena in metallic glasses.     

上下同心,其利断金——记山高(SECO)刀具2011年春季新品发布会

1994年,瑞典山高(SECO)刀具登陆中国,一支由5名业界精英组成的团队开始了新的征途.17年后的今天,山高刀具公司在中国已经拥有了170人的队伍以及百倍于当年的销售业绩.是何原因,让山高公司在中国有了如此的成长?笔者经过数次与山高公司高层及员工的接触,似乎对这个问题有了一个答案:过硬的产品及百人同心的力量成就了今天的山高(中国).     

Optical properties and morphology of diamond-like films obtained in a supersonic flow of a hydrocarbon plasma

A possibility of using a new method of film synthesis in a supersonic flow of a hydrocarbon plasma generated by a disk-type magnetohydrodynamic accelerator is demonstrated. Two methods are used for characterization of diamond-like carbon films: nondestructive spectroscopic ellipsometry and atomic-force microscopy.     

情系企业谋发展服务大局人为本——重钢集团党委副书记、全国五一劳动奖章获得者潘向宇

潘向宇,男,1955年2月生,1982年毕业于原重庆钢专数师班大学本科毕业,高级政工师,1970年12月参加工作.1973年10月加入中国共产党.重庆钢铁(集团)有限责任公司工会主席、重庆钢铁(集团)有限责任公司党委副书记,全国总工会第十三、十四届执行委员、重庆市第二届政协委员.曾获全国冶金企业优秀思想政治工作者称号和重庆劳动创新奖章.2006获年全国五一劳动奖章.     

Quantum computers: Achievements,implementation difficulties,and prospects

A review of the principles of operation of quantum computers and their elements is presented. The radical advantage of quantum algorithms for processing information over the classical ones is discussed, quantum entanglement is considered as the basic resource of quantum computations, and the most promising and interesting proposals on realization of quantum computers on the basis of trapped ions, nuclear spins, quantum dots, superconducting structures, and others are described. This review reflects the materials of the report presented at the scientific session of the Department of Nanotechnologies and Information Technologies of the Russian Academy of Sciences on February 25, 2010.     

Influence of implantation of silicon and oxygen ions into a heteroepitaxial silicon layer on a sapphire substrate on the leakage currents of <Emphasis Type=Italic>n</Emphasis>-channel transistors of CMOS IC SOS technology

Results of the investigation into the influence of implantation of oxygen and silicon ions in the silicon layer in a silicon-on-sapphire structure on the crystal quality of the layer and on the increase in the leakage currents of n-channel transistors fabricated based on these structures are presented.     

Study of the transport properties of organic semiconductors based on europium diphthalocyanine and bi-tris-phthalocyanine complexes with <Emphasis Type=Italic>ortho</Emphasis>-bis(oxymethyl)phenyl bridge and based on erbium and europium dinaphthalocyanine complexes

The transport properties of organic semiconductors based on europium diphthalocyanine and bitris-phthalocyanine complexes with ortho-bis(oxymethyl)phenyl bridge and based on europium and erbium dinaphthalocyanine are studied. The temperature dependences of the dc conductivity for all types of the structures under study are obtained; it is shown that all dependences include two activation portions. For high-temperature portions, the activation energies are determined as 0.85 eV for europium diphthalocyanine with the ortho-bis(oxymethyl)phenyl bridge, 1.135 eV for europium bi-tris-phthalocyanine with the orthobis(oxymethyl)phenyl bridge, 0.98 eV for europium dinaphthalocyanine, and 1.18 eV for erbium dinaphthalocyanine. For the low-temperature activation portion, it is shown that lanthanide ions and their bond with a ligand make the dominant contribution to the conductivity of the structures under study.     

Efficiency of the terahertz spin-injection emitter

The energy efficiency of the spin-injection emitter based on the rod-film ferromagnetic structure with a point contact between the components in the terahertz frequency range is experimentally estimated. The film material substantially affects the efficiency. A concentrator of magnetic flux is proposed for an increase in the efficiency. The experimental estimations allow the quantum yield of the emitter that is greater than unity. This result indicates significant contribution of the stimulated radiative transitions.