One approximate generic equation for calculating inter-nanoparticle forces

2017 ◽  
Vol 314 ◽  
pp. 2-8 ◽  
Author(s):  
Weifu Sun ◽  
Qinghua Zeng ◽  
A.B. Yu
Keyword(s):  
Generic Equation

Stable thin-shells from 5-dimensional extremal Einstein–Yang–Mills fields

2019 ◽  
Vol 16 (10) ◽  
pp. 1950148
Author(s):  
S. Habib Mazharimousavi ◽  
Mustafa Halilsoy
Keyword(s):  
Equation Of State ◽  
Speed Of Sound ◽  
Thin Shells ◽  
Barotropic Fluid ◽  
Yang Mills ◽  
State Formula ◽  
Generic Equation

By employing exact Einstein–Yang–Mills (EYM) solution in [Formula: see text] dimensions we establish spherical thin-shells with mass and Yang–Mills charge. Remarkably these shells are stable against linear, radial perturbations with a barotropic fluid presented on the shell with a generic equation of state [Formula: see text] supporting the speed of sound [Formula: see text].

scholarly journals Biomass Equations for Tropical Tree Plantation Species in Young Stands Using Secondary Data from the Philippines

2007 ◽  
pp. 73-90
Author(s):  
Ma. Regina Banaticla ◽  
Renezita Sales ◽  
Rodel Lasco
Keyword(s):  
Lower Cost ◽  
Secondary Data ◽  
The Philippines ◽  
Tree Biomass ◽  
Tree Plantation ◽  
Paraserianthes Falcataria ◽  
Plantation Species ◽  
Individual Trees ◽  
Residual Plots ◽  
Generic Equation

Estimation of the magnitude of sinks and sources of carbon requires reliable estimates of the biomass of forests and of individual trees. Equations for predicting tree biomass have been developed using secondary data involving destructive sampling in plantations (mostly less than 10 years of age) in several localities in the Philippines. These equations allow estimates of carbon sequestration to be made at much lower cost than would be incurred if detailed stand inventories were undertaken. The species included in the study reported here include Gmelina arborea Roxb., Paraserianthes falcataria (L.) Nielsen Swietenia macrophylla King and Dipterocarp species in Mindanao, and Leucaena leucocephala de Wit from Laguna, Antique, Cebu, Iloilo, Rizal, and Ilocos Sur. Non-linear regression was used to derive speciesspecific, site specific and generic equations between yield and diameter of the form y = αDβ. Equations were evaluated based on the correlation coefficient, standard error of estimate and residual plots. Regressions resulted in high r values (>0.90). In some cases, non-homogeneous variance was encountered. The generic equation improved estimates compared with models used in previous studies.

scholarly journals Modeling of Capacitance in A Supercapacitor

2019 ◽  
Vol 1 (1) ◽  
pp. 18-23
Author(s):  
Ah Heng You ◽  
Pei Ling Cheang
Keyword(s):  
Energy Density ◽  
Electrochemical Impedance ◽  
Porous Electrode ◽  
Low Frequency ◽  
Discharge Current Density ◽  
Laplace Domain ◽  
Electrode Resistance ◽  
Proposed Model ◽  
Near Future ◽  
Generic Equation

A general supercapacitor model is developed by incorporating the effective surface area in the presence of pores. An analytical solution has been derived from the generic equation in Laplace domain based on the porous-electrode theory. This model demonstrates the effects of solution to matrix conductivity ratio, separator to electrode resistance ratio and discharge current density on the electrochemical impedance, capacitance and energy density of supercapacitor. The electrochemical impedance, capacitance and energy density of supercapacitor are calculated in this work. The maximum capacitance of 12.71 F/cm2was computed in low frequency range in this device. The proposed model can be applied to simulate the characteristics of polymer-based supercapacitor in near future.

A generic equation of state for liquid crystalline phases of hard-oblate particles

2012 ◽  
Vol 110 (11-12) ◽  
pp. 1269-1288 ◽  
Author(s):  
L. Wu ◽  
H.H. Wensink ◽  
G. Jackson ◽  
E.A. Müller
Keyword(s):  
Equation Of State ◽  
Liquid Crystalline ◽  
Crystalline Phases ◽  
Liquid Crystalline Phases ◽  
Generic Equation

From Henry Bessemer’s invention to comprehensive converter process optimization

2020 ◽  
pp. 88-95
Author(s):  
V. Yu. Bazhin ◽  
◽  
G. V. Konovalov ◽  
T. R. Kosovtseva ◽  
J. Schenk ◽  
...  
Keyword(s):  
Research Work ◽  
Mining Institute ◽  
Slag Formation ◽  
Special Design ◽  
The Urals ◽  
Tuyere Zone ◽  
Steel Mills ◽  
Converter Design ◽  
Spatially Oriented ◽  
Generic Equation

The Bessemer process enabling to produce high-quality steels was implemented at steel mills of the Urals region more than 200 years ago. At the beginning of the 20th century, the process was modified by scientists from the Mining Institute and was then adopted by copper and nickel alloy producers. The converter process became one of the key processing stages with Russian copper and nickel smelters. This paper examines certain ways to improve the tuyere air flow in a horizontal converter. The authors came up with a generic equation for calculating specific blast air pressure and discuss the use of hydrothermal and aerodynamic techniques for tuyere purging. The blast air limit was determined for a horizontal converter that is characterized with massive melt ejections. The authors demonstrate that, in spite of all the process and design improvements, the modern converter process still has three major drawbacks. They include process cycling, the gas ductwork not being completely tight, unbalanced thermal and chemical status of the vessel leading to excessive thermal and chemical loads on the tuyere zone and incomplete slag formation in zones that are farther from the tuyeres. Research work is ongoing on a novel continuous converter design which involves the use of special-design unsubmerged tuyeres. Such tuyeres produce spatially oriented high-pressure blasts which enable consistent rotation of the molten matte in a tight cylindrical vessel.

Two Temperature Extension of Phonon Hydrodynamics

2020 ◽  
Vol 45 (3) ◽  
pp. 291-304 ◽  
Author(s):  
Bing-Yang Cao ◽  
Miroslav Grmela ◽  
Zeng-Yuan Guo ◽  
Yu-Chao Hua ◽  
Ben-Dian Nie
Keyword(s):  
Mathematical Structure ◽  
State Variables ◽  
Qualitative Properties ◽  
Physical Content ◽  
Independent State ◽  
Energy Field ◽  
The Status ◽  
Qualitative Properties Of Solutions ◽  
Generic Equation ◽  
Two Temperature

AbstractPhonon hydrodynamics uses the fields of the total energy and the heat flux as state variables. We extend it by promoting the microscopic internal energy field into the status of an extra independent state variable. The governing equations of both the phonon and the extended (two temperature) phonon hydrodynamics are formulated as particular realizations of the abstract GENERIC equation. Such unified formulation makes both theories manifestly compatible with mechanics and thermodynamics. Also differences and similarities (in the physical content, in the mathematical structure, and in qualitative properties of solutions) between the two heat transfer theories, as well as their mutual compatibility, become manifestly displayed.

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