261 research outputs found
Effect of the Metallization on the Resonances of THz Fishnet Metamaterials
In this numerical study, the influence of the choice of metal (and hence of the conductivity) used for the fabrication of THz fishnet metamaterials is investigated. We explore an exemplary structure for which surface-plasmon-polaritons offer β assuming sufficiently good conductivity β pronounced extraordinary transmission and strong multiple magnetic resonances with negative permeability. We analyze the dependence of these signatures on the type of metallization. Studying five different metals, we find that the metallization is important for achieving the multiple resonances. A reduction of the conductivity can lead to a dramatic weakening and even a near-disappearance of magnetic resonances if they lose their diamagnetic character
Photon-energy dissipation caused by an external electric circuit in "virtual" photo-excitation processes
We consider generation of an electrical pulse by an optical pulse in the
``virtual excitation'' regime. The electronic system, which is any
electro-optic material including a quantum well structure biased by a dc
electric field, is assumed to be coupled to an external circuit. It is found
that the photon frequency is subject to an extra red shift in addition to the
usual self-phase modulation, whereas the photon number is conserved. The Joule
energy consumed in the external circuit is supplied only from the extra red
shift.Comment: 4 pages, 1 fugur
Features of water chemical composition of oligotrophic and eutrophic bogs in the South of the Tomsk region
On the basis of the actual material the analysis of chemical composition of bog waters in the territory of the South of the Tomsk region is carried out. The data on average concentration of macro and trace components, organic matter, pH of bog waters are obtained. Significant distinctions in a chemical composition of surface water for different types of bogs are revealed. The composition and macrostructure of humic acids by the example of eutrophic bogs is studied
The Concept of Ecologically Oriented Progress and Natural Resource Preservation
The most important issue of scientific and technological progress is considering the environment challenges of industrial development. It means that the progress must be ecologically oriented and environmentally friendly. The most adequate concept for the approach to the issue of "man - society β nature" relations is the ontology of the noosphere - the idea of a common space for human beings and nature. It presents an ideal example of an optimistic attitude towards the coordination between accelerating the scientific and technological development and natural resource saving. However, to maintain the balance between human needs and environmental processes determined by this concept, it is essential to include the lean production training into technological development of society
ΠΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΈΡΡΠ΅ΠΌΡ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·Π°ΡΠΈΠΈ ΠΈ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΡΠ·Π»Π° ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ°ΡΡΠ²ΠΎΡΠ° ΡΡΠ°Π½ΠΈΠ»Π½ΠΈΡΡΠ°ΡΠ°
ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½Π°Ρ ΡΠΈΡΡΠ΅ΠΌΠ°
ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠΌ ΡΠ·Π»Π° ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ°ΡΡΠ²ΠΎΡΠ°
ΡΡΠ°Π½ΠΈΠ»Π½ΠΈΡΡΠ°ΡΠ°. Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΡΠΎΠ·Π΄Π°Π½ΠΈΠ΅ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠΌ ΡΠ·Π»Π° ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ°ΡΡΠ²ΠΎΡΠ° ΡΡΠ°Π½ΠΈΠ»Π½ΠΈΡΡΠ°ΡΠ°.
Π ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΎΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅
ΡΡΡΠ΅ΡΡΠ²ΡΡΡΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΎΡΠ΅Π½ΠΊΠΈ Π°ΠΏΠΏΠ°ΡΠ°ΡΠ½ΠΎΠΉ ΠΈ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΠΎΠΉ Π½Π°Π΄Π΅ΠΆΠ½ΠΎΡΡΠΈ ΠΠ‘Π£
Π’Π.The subject of the study is an automated system
Control of the technological process of the solution concentration unit
Uranyl nitrate. The purpose of the work is the creation of an automated control system
Technological process of the unit of concentration of a solution of uranyl nitrate.
During the research, a study was conducted, as well as a study
Existing methods for evaluating the hardware and software reliability of the control system
TP
ΠΠ½Π°Π»ΠΈΠ· ΡΠ²Π°ΡΠΈΠ²Π°Π΅ΠΌΠΎΡΡΠΈ ΡΠ»ΠΎΠΈΡΡΡΡ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠΏΠ»Π°Π²ΠΎΠ² ΠΆΠ΅Π»Π΅Π·Π° ΠΈ Π°Π»ΡΠΌΠΈΠ½ΠΈΡ
ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ: ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΡΠ²Π°ΡΠΈΠ²Π°Π΅ΠΌΠΎΡΡΠΈ ΡΠ»ΠΎΠΈΡΡΡΡ
ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ² Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΠΏΠ»Π°Π²ΠΎΠ² ΠΆΠ΅Π»Π΅Π·Π° ΠΈ Π°Π»ΡΠΌΠΈΠ½ΠΈΡ (ΡΡΠ°Π»Ρ 12Π₯18Π10Π’, ΡΡΠ°Π»Ρ 08ΠΠ‘,ΠΠΠ³6, ΠΠΡΠ). Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ: ΡΠΈΡΠ»Π΅Π½Π½ΠΎ-ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»ΡΠ½ΡΠΉ ΠΌΠ΅ΡΠΎΠ΄ ΠΏΠΎΠΈΡΠΊΠ° ΡΠ΅ΠΆΠΈΠΌΠΎΠ² ΠΠΠ‘ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠ², ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠΈΡ
ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ΅ ΡΠ²Π°ΡΠ½ΠΎΠ΅ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠ΅. Π ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈΡΡ: ΡΠΈΡΠ»Π΅Π½Π½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ²Π°ΡΠΊΠΈ ΡΡΠ°Π»ΠΈ Ρ Π°Π»ΡΠΌΠΈΠ½ΠΈΠ΅ΠΌ Π² ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΠ½ΠΎΠΉ ΡΡΠ΅Π΄Π΅ "ΠΠΠΠ". ΠΠ°ΡΡΡΠ½ΡΠ΅ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΡ Π½Π° ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠ΅ "Π’ΠΠ’Π 450".The object of the study is: The study of laminates weldability on the basis of iron and aluminum alloys (steel 12X18H10T steel 08ps, AMg6 AMtsΠ). Objective β numerical-experimental method of searching for ELS modes of composite materials providing a quality welded joint. In the course of the research, numerical modeling of welding steel with aluminum in the "MEZA" software environment was carried out. Natural experiments on the "TETA 450"
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