On the relationship between the energy characteristics of the isodesmic reactions of polychlorinated dioxins and their toxicity

2019 ◽  
Vol 68 (4) ◽  
pp. 867-869 ◽  
Author(s):  
I. A. Abronin ◽  
L. V. Volkova
Keyword(s):  
Isodesmic Reactions ◽  
Energy Characteristics ◽  
The Relationship

Urban Structure Design Strategy of Energy Conservation

2011 ◽  
Vol 243-249 ◽  
pp. 6686-6691
Author(s):  
Li Ya Fan ◽  
Yan Li ◽  
Xue Qiang Wang
Keyword(s):  
Energy Conservation ◽  
Urban Design ◽  
Design Strategy ◽  
Structure Design ◽  
Energy Crisis ◽  
Urban Structure ◽  
Practical Application ◽  
Energy Characteristics ◽  
New Era ◽  
The Relationship

Energy crisis is the major problem that we are facing today. Energy conservation is imminent. In accordance with the idea of asking, analyzing and solving questions, this paper discussed the relationship between urban structure and energy, urban development and energy characteristics of new era, from the perspective of urban design. We proposed several strategies about urban structure design and hope to play on certain references in the practical application.

scholarly journals Determination and Study the Energy Characteristics of Vibrational-Rotational Levels and Spectral Lines of GaF, GaCl, GaBr and GaI for Ground State

2015 ◽  
Vol 50 ◽  
pp. 96-112
Author(s):  
Adil Nameh Ayaash
Keyword(s):  
Quantum Number ◽  
Computer Model ◽  
Ground State ◽  
Theoretical Study ◽  
Rotational Quantum Number ◽  
Spectral Lines ◽  
Vibrational Quantum Number ◽  
Energy Characteristics ◽  
Number Increase ◽  
The Relationship

A theoretical study of four gallium monohalides molecules (GaF, GaCl, GaBr and GaI) of ground state 1∑+ by using computer model is presented to study the energy characteristics of vibrational-rotational levels as a function of the vibrational and rotational quantum number , respectively. The calculations has been performed to examine the vibrational-rotational characteristics of some gallium halides molecules. These calculations appeared that all energies (Gv, Ev,J, and Fv,J) increase with increasing vibrational and rotational quantum number and by increasing the vibrational quantum number, and by increasing the vibrational quantum number, the vibrational constant will decrease. Also theoretical study of spectra of these molecules for ground state 1∑+ has been carried out. The values of spectral lines R(J) and P(J) were calculated and the relationship between the spectral lines and the rotational quantum number was established. The results appeared the spectra line values R(J) increases when the values of rotational quantum number decrease but the spectra line values P(J) decrease when the values of rotational quantum number increase, also the spectra line values P(J) decrease when the values of (m) increase, while the values of R(J) increase at first, then decrease showing Fortrar parabola.

Application of ANN Trained with GA in Energy Characteristics of Hydraulic Turbine

2010 ◽  
Vol 108-111 ◽  
pp. 692-695
Author(s):  
Li Ying Wang ◽  
Wei Guo Zhao ◽  
Chuan Hong Zhang
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Learning Algorithm ◽  
Hydraulic Turbine ◽  
Optimal Operation ◽  
Practical Significance ◽  
Hydraulic Unit ◽  
Energy Characteristics ◽  
Artificial Neural Network Ann ◽  
The Relationship

The learning algorithm of artificial neural network (ANN) trained with genetic algorithm (GA) are introduced, based on the operation data of hydropower station, the network model of energy characteristics is established based on GA-ANN, the relationship curve between head H and output N is gained under some efficiency. The results show that the algorithm is better than BP neural network and avoid the limitations of BP neural network, the results can be used in the optimal operation of hydropower, and it has a practical significance. The results show the new model has a great importance in hydraulic unit study. It could be generalized into other all efficiency prediction, and it offers a new way in water conservancy and at the meantime a new method for the study of ANN and GA.

scholarly journals On energy relationships between explosive rupture and extraction processes at quarries

2020 ◽  
Vol 177 ◽  
pp. 01006
Author(s):  
Sergey Zharikov ◽  
Vyacheslav Kutuev
Keyword(s):  
Energy Intensity ◽  
Technical Literature ◽  
Mineral Extraction ◽  
Energy Characteristics ◽  
Working Face ◽  
Rupture Energy ◽  
Energy Relationships ◽  
Extraction Processes ◽  
The Relationship ◽  
Over Time

The article deals with the links between mineral extraction processes. The most universal characteristic of the process is its energy intensity. Production process cycles are considered in the relationship between their energy characteristics, taking into account the extraction in the working face over time. This approach has been largely determined by earlier studies in the direction of studying the energy intensity of technological processes. However, the relationship between explosive rupture energy and excavation has not been established, although the link between explosive preparation and the performance of the excavation equipment was stated in the technical literature multiple times. The presented material analyzed previously published materials on establishing relationships between drilling and explosive rupture processes of rock massif. The energy characteristics of excavation works and explosive rupture were considered. Prospective direction of technological links study was proposed. Attention is drawn to the fact that the approach to relationships definition between processes may not always be monotonous, because it is sometimes difficult to express physical meaning in a flat system.

On the Energy Characteristics of the Aerodynamic Matrix and the Relationship to Possible Flutter

1983 ◽  
Vol 34 (3) ◽  
pp. 212-225 ◽  
Author(s):  
J.G. Jones
Keyword(s):  
Energy Storage ◽  
Energy Dissipation ◽  
Control Systems ◽  
Power Input ◽  
Forced Oscillations ◽  
Energy Characteristics ◽  
Flutter Suppression ◽  
Energy Concept ◽  
Sinusoidal Motion ◽  
The Relationship

SummaryThe problem of energy transfer between an airstream and a wing in sinusoidal motion has been investigated by a series of authors beginning with Frazer who in 1939 considered the power input required to maintain forced oscillations of an aeroplane wing in flight. More recently Nissim introduced an ‘aerodynamic energy concept’ as the basis for the design of active control systems for flutter suppression. In this paper the author reconsiders the energy characteristics of the aerodynamic matrix in terms of the network concepts of resistive and reactive elements, corresponding to energy dissipation and energy storage respectively. A dual formulation of Nissim’s method is described and an extension proposed that takes account of aerodynamic energy storage in addition to aerodynamic energy dissipation.

Hydrodynamic improvement by adding inlet baffles on centrifugal pump for reducing cavitation instabilities

2021 ◽  
pp. 107754632110474
Author(s):  
Zhicong Wei ◽  
Ran Tao ◽  
Ruofu Xiao ◽  
Honglin Hu
Keyword(s):  
Centrifugal Pump ◽  
High Speed ◽  
Low Frequency ◽  
Cavitation Number ◽  
Center Frequency ◽  
Hydraulic Test ◽  
Rate Condition ◽  
Energy Characteristics ◽  
Cavitation Instability ◽  
The Relationship

Cavitation instability is a common phenomenon that causes vibration and noise of turbomachinery. In this study, an attempt is made to suppress the cavitation instability. A high-speed centrifugal pump with inducer is taken as the research objective. Four baffles are evenly arranged at the inlet of the inducer as a hydrodynamic improvement. The energy characteristics of the pump are measured on a closed hydraulic test rig. The pressure, vibration, and noise under different flow rates and different cavitation number are acquired for comparative analyses. Experimental results show that the energy characteristics changed after hydrodynamic improvement. The original pump is mainly affected by y-direction vibration and is clearly suppressed in the new pump. The low-frequency pressure pulsation under partial flow rate condition can be effectively suppressed. The baffles can also reduce the broadband center frequency at the pump outlet and change the relationship between center frequency and cavitation number. These results show that the hydrodynamic improvement at the inlet helps the suppression of cavitation instability of the high-speed centrifugal pump.

Interstellar gas in the central region of the Galaxy

1967 ◽  
Vol 31 ◽  
pp. 239-251 ◽  
Author(s):  
F. J. Kerr
Keyword(s):  
Central Region ◽  
Galactic Plane ◽  
Neutral Hydrogen ◽  
Continuum Emission ◽  
Galactic Centre ◽  
Interstellar Gas ◽  
Hydrogen Recombination ◽  
The Galaxy ◽  
Centre Region ◽  
The Relationship

A review is given of information on the galactic-centre region obtained from recent observations of the 21-cm line from neutral hydrogen, the 18-cm group of OH lines, a hydrogen recombination line at 6 cm wavelength, and the continuum emission from ionized hydrogen.Both inward and outward motions are important in this region, in addition to rotation. Several types of observation indicate the presence of material in features inclined to the galactic plane. The relationship between the H and OH concentrations is not yet clear, but a rough picture of the central region can be proposed.

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Choosing a Markov blanket

2020 ◽  
Vol 43 ◽  
Author(s):  
Thomas Parr
Keyword(s):  
Markov Blanket ◽  
Target Article ◽  
The Relationship

Abstract This commentary focuses upon the relationship between two themes in the target article: the ways in which a Markov blanket may be defined and the role of precision and salience in mediating the interactions between what is internal and external to a system. These each rest upon the different perspectives we might take while “choosing” a Markov blanket.

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