72 research outputs found
A New Option for a Search for Alpha Variation: Narrow Transitions with Enhanced Sensitivity
We consider several transitions between narrow lines that have an enhanced
sensitivity to a possible variation of the fine structure constant, alpha. This
enhancement may allow a search to be performed with an effective suppression of
the systematic sources of uncertainty that are unavoidable in conventional
high-resolution spectroscopic measurements. In the future this may provide the
strongest laboratory constraints on alpha variation
Optical Clocks in Space
The performance of optical clocks has strongly progressed in recent years,
and accuracies and instabilities of 1 part in 10^18 are expected in the near
future. The operation of optical clocks in space provides new scientific and
technological opportunities. In particular, an earth-orbiting satellite
containing an ensemble of optical clocks would allow a precision measurement of
the gravitational redshift, navigation with improved precision, mapping of the
earth's gravitational potential by relativistic geodesy, and comparisons
between ground clocks.Comment: Proc. III International Conference on Particle and Fundamental
Physics in Space (SpacePart06), Beijing 19 - 21 April 2006, to appear in
Nucl. Phys.
Ultra-precise measurement of optical frequency ratios
We developed a novel technique for frequency measurement and synthesis, based
on the operation of a femtosecond comb generator as transfer oscillator. The
technique can be used to measure frequency ratios of any optical signals
throughout the visible and near-infrared part of the spectrum. Relative
uncertainties of for averaging times of 100 s are possible. Using a
Nd:YAG laser in combination with a nonlinear crystal we measured the frequency
ratio of the second harmonic at 532 nm to the fundamental at
1064 nm, .Comment: 4 pages, 4 figure
Особенности эксергетического анализа энергоресурсосберегающих систем водного хозяйства
The specific features of applying the exergy analysis method for the energy resource saving waterworks systems of industrial plants were considered. The analysis of the influence of changes in polluting substance mass loading value on changes in exergy value upon mixing water technological flows was carried out.Рассмотрены особенности применения метода эксергетического анализа энергоресурсо-сбе-регающих систем водного хозяйства промышленных предприятий. Проведен анализ влияния изменения величины массовой нагрузки по загрязняющему веществу на изменение значения эксергии при смешивании водных технологических потоков
SOCIAL HEALTH DETERMINES MENTAL AND PHYSICAL DEVELOPMENT OF YOUNG PEOPLE
The article deals with the issue of modern understanding of social health and its impact on the mental and physical development of a young person in high school. Using the method of analysis, a study of the term "social health" in its modern sense was conducted. Using the method of M. Rokich, a study of terminal and instrumental in 363 students of the direction of training "State and municipal management" AT the Ural Federal University named after the first President of Russia B. N. Yeltsin was conducted. The results show that the system of socially-oriented values of a young person determines his social health, as well as determines his mental and physical development.В статье рассматривается вопрос о современном понимании социального здоровья и влиянии его на психическое и физическое развитие молодого человека в условиях высшей школы. С помощью метода анализа проведено исследование термина «социальное здоровье» в современном его понимании. С помощью методики М. Рокича проведено исследование терминальных и инструментальных у 363 студентов направления подготовки «Государственное и муниципальное управление» в ФГАОУ ВО «Уральский федеральный университет имени первого Президента России Б. Н. Ельцина». Полученные результаты показывают, что система социально-ориентированных ценностей молодого человека определяет его социальное здоровье, а также определяет его психическое и физическое развитие
Интегрированная ресурсосберегающая система водопотребления и водоотведения стекольного производства
The methodology of designing of water resource-saving chemical process of glass works has been proposed. The basis of it is thermodynamic approach to analysis and synthesis (designing) of processes (the application of thermodynamic exergy method). The proposed methodology was approved by water chemical process designing of large-scale glass enterprises (production of glass fiber, glass cloth, hardened glass).Предложена методология проектирования водных ресурсосберегающих химико- технологических систем стекольных производств. Основой ее служит термодинамический подход к анализу и синтезу (проектированию) производственных процессов (применение термодинамического эксергетического метода). Предло- женная методология апробирована при проектировании водных химико-технологических систем крупных стекольных предприятий (производств по выпуску стекловолокна, стеклоткани, бронированного стекла)
Absolute frequency measurement of the In clock transition with a mode-locked laser
The absolute frequency of the In -
clock transition at 237 nm was measured with an accuracy of 1.8 parts in
. Using a phase-coherent frequency chain, we compared the
- transition with a methane-stabilized He-Ne laser at 3.39 m
which was calibrated against an atomic cesium fountain clock. A frequency gap
of 37 THz at the fourth harmonic of the He-Ne standard was bridged by a
frequency comb generated by a mode-locked femtosecond laser. The frequency of
the In clock transition was found to be
kHz, the accuracy being limited by the uncertainty of the He-Ne laser
reference. This represents an improvement in accuracy of more than 2 orders of
magnitude on previous measurements of the line and now stands as the most
accurate measurement of an optical transition in a single ion.Comment: 3 pages, 2 figures. accepted for publication in Opt. Let
Integrated resource-saving waterconsumption and water-disposal system of glass-work
The methodology of designing of water resource-saving chemical process of glass works has been proposed. The basis of it is thermodynamic approach to analysis and synthesis (designing) of processes (the application of thermodynamic exergy method). The proposed methodology was approved by water chemical process designing of large-scale glass enterprises (production of glass fiber, glass cloth, hardened glass)
The peculiarities of exergy analysis of energy-resource-saving water management systems
The specific features of applying the exergy analysis method for the energy resource saving waterworks systems of industrial plants were considered. The analysis of the influence of changes in polluting substance mass loading value on changes in exergy value upon mixing water technological flows was carried out
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