Feature extraction of overlapping hevea leaves: A comparative study

Anjomshoae, Sule; Rahim, Mohd Shafry Bin Mohd

doi:10.1016/j.inpa.2018.02.001

Cited by 3 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Если система находится в состоянии неустойчивого равновесия (лабильное состояние) и из него ее вывести, то система уже не возвратится в исходное состояние, а перейдет в новое состояние устойчивого равновесия. Даже очень малые внешние воздействия выводят систему из лабильного состояния [8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: методыunclassified

Thermodynamics of phase equilibrium in solid-liquid and solid-gas systems

Shishatskii

Дерканосова

Tolstov

2021

Vestn. Voronež. gos. univ. inž. tehnol.

View full text Add to dashboard Cite

The thermodynamic equilibrium of a two-phase system is described by the Gibbs equation, which includes state parameters. On the basis of the Gibbs equation and the combined equation of the first and second laws of thermodynamics, thermodynamic potentials are written: internal energy, enthalpy and Gibbs free energy. If the two phases are in equilibrium, then the temperatures, pressures and chemical potentials of these phases are equal to each other. Equalities express the conditions of thermal and mechanical equilibrium, as well as the condition for the absence of a driving force for the transfer of a component across the interface. For a two-phase system, the Gibbs-Duhem equation connects the volume and entropy of 1 mole of the mixture, the content of any component, expressed in mole fractions. Extraction from lupine particles with cheese whey (solid-liquid system) is considered. The driving force of the extraction process in the solid-liquid system is the difference between the concentration of the solvent at the surface of the solid C and its average concentration C0 in the bulk of the solution. The concentration at the interface is usually taken to be equal to the concentration of a saturated solution of Cn, since equilibrium is established rather quickly near the surface of a solid. Then the driving force of the process is expressed as Cn – C0. A curve for the extraction of extractives from lupine with cheese whey was plotted by superimposing low-frequency mechanical vibrations.

show abstract

Section: методыunclassified

Thermodynamics of phase equilibrium in solid-liquid and solid-gas systems

Shishatskii

Дерканосова

Tolstov

2021

Vestn. Voronež. gos. univ. inž. tehnol.

View full text Add to dashboard Cite

show abstract

“…Numerous image pre-processing techniques like binarization, thresholding, resizing and normalization have been widely applied in many studies (Abd. Razak et al, 2017, Shamsuddin et al, 2017, Anjomshoae & Rahim, 2018. The use of feature extraction techniques was applied in Abd.…”

Section: Feature Extractionmentioning

confidence: 99%

“…The color group is then extracted based on the gradient scale of grayscale, and these features were then used to identify the optimum amount of nitrogen fertilizer for paddy fields. Anjomshoae and Rahim (2018) performed several feature extraction techniques on hevea leaves or rubber tree to identify the clone types. In their studies, they proposed the key point extraction and line detection method to extract shape and axil or angel of leaflet position.…”

Section: Feature Extractionmentioning

confidence: 99%

Classification of Paddy Weed Leaf Using Neuro-Fuzzy Methods

Jamil¹,

Mutalib²,

Rahman³

et al. 2018

MJoC

View full text Add to dashboard Cite

Paddy weed appears to be one of the many visible threats to paddy crop production and subsequently farmers’ income. It is for this reason that the growth of paddy weeds in paddy fields should be controlled as it results in a significant decrease of paddy yields. However, farmers might have limited knowledge on weed types, and are thus unable to identify and determine the right prevention methods. This paper presents classification methods for paddy weeds through the leaf shape extraction and applies neuro-fuzzy methods for recognizing the types of weeds. The types being focussed are the Sphenoclea zeylanica, Ludwigia hyssopifolia and Echinochloa crus-galli. The developed e-prototype methods would be able to classify paddy weeds with 83.78% accuracy. Hopefully, the findings in this study would assist farmers and researchers in increasing their paddy yields and eliminating weed growth respectively. The production of paddy in Malaysia would eventually be improved with the proposed methods, which can be considered as a technology advancement in the field of paddy production.

show abstract

On the equilibrium and stability of a fluidized bed as a thermodynamic system

Shishatskii

Tolstov

Дерканосова

et al. 2021

Vestn. Voronež. gos. univ. inž. tehnol.

View full text Add to dashboard Cite

The transfer of the dispersed layer into a fluidized state makes it possible to intensify the drying process. The small size of the particles leads to an increase in the surface of their contact with the coolant at a relatively low hydrodynamic resistance. Other positive qualities of fluidization are listed, which is very important when carrying out exothermic processes. We studied the behavior of the fluidized bed during the drying process. The curve of fluidization of beet chips is shown. The suspended state of the material began when the forces of the hydrodynamic layer were equal to the weight of all its particles per unit area of the cross-section of the working chamber. The region of existence of the fluidized bed is marked. In this area, the flow was relatively equilibrium (fluidized). On the surface of the layer, small waves were observed with different frequencies and amplitudes of oscillations, as well as with spontaneous fluctuations. This mode of operation was achieved as a result of the study of the structures of the support - gas distribution grid and the drying chamber. The flow velocity profile in the working chamber is investigated. An efficient equalization of velocities with the help of flat stamped grids has been established. The results were confirmed by the spectra of the flow in the drying chamber. Oscillations on the free surface of a fluidized bed are considered. The Euler equation was written, which made it possible, as a result of various transformations, to obtain a formula for calculating the oscillation frequency of the fluidized bed. The studies carried out made it possible to establish the regimes of pseudo-fluidization, to a certain extent minimizing the heterogeneity of the layer, which is of significant practical importance. However, the operating parameters need to be adjusted depending on the type of material to be dried and other indicators. The research results do not obscure the general provisions of nonequilibrium thermodynamics. The fluidized bed cannot be in an equilibrium state, since the transfer of substances is obvious: energy, mass and momentum. It is correct to regard the fluidized bed as unstable. Small and spontaneous fluctuations always exist in the layer. The absence of conditions for their decay becomes a condition for the instability of the process.

show abstract

Feature extraction of overlapping hevea leaves: A comparative study

Cited by 3 publications

References 28 publications

Thermodynamics of phase equilibrium in solid-liquid and solid-gas systems

Thermodynamics of phase equilibrium in solid-liquid and solid-gas systems

Classification of Paddy Weed Leaf Using Neuro-Fuzzy Methods

On the equilibrium and stability of a fluidized bed as a thermodynamic system

Contact Info

Product

Resources

About