Ложка для людей с тремором рук

Болезнь Паркинсона вызвана прогрессирующим разрушением и гибелью нейронов, вырабатывающих нейромедиатор дофамин. Из-за этого нарушается регуляция движений и мышечного тонуса, что проявляется характерным тремором, общей скованностью и нарушением позы и движений. Для паркинсонизма характерен тремор, возникающий в покое. Авторы разработали ложку для людей с болезнью Паркинсона, позволяющую держать её содержимое в неподвижном состоянии при воздействие на нее тремором рук

Changes in surface properties of PI/WO₂ сoatings after vacuum ultraviolet irradiation

This paper presents the results of a study on the effects of deep vacuum and vacuum ultraviolet (VUV) irradiation on polymer сoatings based on thermoplastic polyimide (PI) and tungsten oxide (WO₂

Synthesis of PI/POSS nanocomposite films based on track nuclear membranes and assessment of their resistance to oxygen plasma flow

This work presents, for the first time, data on the possibility of synthesizing polyimide nanocomposite films based on track nuclear membranes and organosiloxane (polyhedral oligomeric silsesquioxanes) POSS structures. The synthesis of the nanocomposite films was carried out by filling the tracks of a polyimide membrane with POSS structures under hydrothermal conditions in a high-pressure reactor. The surface and mechanical characteristics of the developed nanocomposite films were studied, and the results of their resistance to the flow of oxygen plasma are presente

Doped nanoparticles for optoelectronics applications

Nanoparticles of wide band gap materials doped with transition metal ions or rare earth ions are intensively studied for their possible applications in a new generation of light sources for an overhead illumination. In this work we discuss mechanisms of emission enhancement in nanoparticles doped with rare earth or/and transition metal ions. Arguments are presented that phosphors of nanosize may emit light more efficiently and thus be applied in practical optoelectronic devices

Sociocultural Dimension of Hidden Content in a Professional Language Curriculum

Introduction: studying curriculum as a pedagogical problem has traditionally been reduced to the analysis of its explicit content, set in official educational documents. However, a much less studied hidden content plays a significant role in education. So, what is the role of the hidden curriculum during professional language training? The purpose of the article is to determine the potential impact of hidden curriculum on students’ conceptual worldview. Comparing the worldview presented in textbooks with students’ one has allowed us to estimate the rate of influence of hidden curr iculum. Materials and Methods: the methodological basis of the work is the cultural concept of personalityoriented education. The methodology for studying the role of hidden curriculum includes four stages: at the first stage, the authors set the criteria for selecting textbooks for analysis and do the selection; at the second stage, the authors select sociocultural concepts for analysis; at the third stage, the scheme of analysis is designed and the analysis of textbooks is done; at the fourth stage, the authors identify the potential influence of hidden curriculum on students’ conceptual worldview. Results: the structure of hidden curriculum has been determined and the scheme for analysing its subject component has been developed. The authors have identified a significant influence of hidden curriculum on students’ worldview, which represents the scientific novelty of the article. Discussion and Conclusions: the article gives the definition of a hidden curriculum which is new for Russian pedagogy and presents a methodology for its analysis in EFL textbooks. That analysis is recommended to be conducted when selecting teaching materials both i n languages and other humanities

Photoluminescence of Er3+\text{}^{3+} near 1.54μm in Silicon-Rich Silicon Oxide Films

Excitation of the intra-4f-shell luminescence near 1.5μm in silicon-rich silicon oxide is studied. Silicon-rich silicon oxide was produced by high dose implantation of Si$\text{}^{+}$ ions into SiO$\text{}_{2}$ layers grown on silicon. Erbium doping was also performed using implantation of Er^+ ions at an energy of 800 keV. An evidence is presented that transfer of energy from defects related to excess silicon in silica is the dominant mechanism of excitation of Er$\text{}^{3+}$ for optical pumping in the UV-blue wavelength range. Si-nanocrystals created by annealing at 1100ºC rather compete for excitation with erbium than transfer energy to Er$\text{}^{3+}$

Effects of Global Boundary and Local Collisionality on Magnetic Reconnection in a Laboratory Plasma

The magnetic reconnection process is studied in a wide range of operating conditions in the well-controlled Magnetic Reconnection Experiment. The reconnection rate is observed to be a function of both global (i.e., system size) and local (collisionality) plasma parameters. When only local collisionality is lowered, the current sheet is shortened while effective resistivity is enhanced, both accelerating reconnection rates. At a fixed collisionality, the current sheet length increases with system size, resulting in the reduction of the reconnection rate. These results quantitatively agree with a generalized Sweet-Parker analysis

Photoluminescence of Er 3+

Excitation of the intra-4f-shell luminescence near 1.5μm in silicon-rich silicon oxide is studied. Silicon-rich silicon oxide was produced by high dose implantation of Si$\text{}^{+}$ ions into SiO$\text{}_{2}$ layers grown on silicon. Erbium doping was also performed using implantation of Er^+ ions at an energy of 800 keV. An evidence is presented that transfer of energy from defects related to excess silicon in silica is the dominant mechanism of excitation of Er$\text{}^{3+}$ for optical pumping in the UV-blue wavelength range. Si-nanocrystals created by annealing at 1100ºC rather compete for excitation with erbium than transfer energy to Er$\text{}^{3+}$