Increase of multimodular unit functioning efficiency for agroengineering technologies

10.12737/1346 ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. 49-52 ◽  
Author(s):  
Белова ◽  
Maryana Belova ◽  
Зиганшин ◽  
Bulat Ziganshin
Keyword(s):  
Electromagnetic Radiation ◽  
Quality Factor ◽  
Fermentation Process ◽  
Delay Systems ◽  
Agricultural Product ◽  
Yeast Fermentation ◽  
Sweat Bee ◽  
The Third ◽  
Generator Unit ◽  
Functional Purpose

The article narrates about the laboratory samples using the energy of electromagnetic radiation at different wave lengths . On the basis of these units, a multimodular microwave unit is made, which consists of the generator unit with resonator chambers, chambers and mechanisms for the threading process. One unit is assembled from four removable modules. The first module is designed to defrost the dough and flour products, the second is for the sweat bee-wax, and the third - for the pasteurization of milk, melange and melting out the melted butter; the fourth - to activate the baker’s yeast fermentation process. The main difference between the working units of the aggregate consists of modules and versions of resonator chambers. It was founded the configuration, volume and quality factor of the resonator chambers for the processing of agricultural product, according to the functional purpose of the process and structure of the material providing threading process. Resonator chamber systematized as follows: 1 ) stationary, rotating and moving camera 2) with punching, without perforation through a gap for conveying the product , and 3) the content of delay systems (to equalize the pressure, temperature and humidity throughout the structure material); 4 ) with individual and shared shield frame and etc.

scholarly journals The Potential of the Biodigester as a Useful Tool in Coffee Farms

2021 ◽  
Vol 11 (15) ◽  
pp. 6884
Author(s):  
Mauricio Hernández-Sarabia ◽  
Juan Sierra-Silva ◽  
Liliana Delgadillo-Mirquez ◽  
Julián Ávila-Navarro ◽  
Laura Carranza
Keyword(s):  
Fermentation Process ◽  
Biogas Production ◽  
Animal Manure ◽  
Agricultural Product ◽  
Coffee Production ◽  
Coffee Waste ◽  
Coffee Cultivation ◽  
Harmful Effects ◽  
Wet Fermentation ◽  
Potential Tool

Coffee is a highly productive agricultural product in the department of Tolima. The wet fermentation process of coffee generates about 80% of the waste, which is highly contaminated with organic matter that pollutes water sources, so anaerobic co-digestion techniques are implemented in coffee wastewater using Taiwan type biodigesters. According to the study of three biodigesters fed with coffee waste and animal manure, the aim is to show their potential application in coffee farms. These biodigesters generated a biogas production with CH4 concentrations between 49.1% ± 4.6 and 58.1% ± 2.4 in volume, in addition to the benefit of the biol used as fertilizer in the crops. The biogas produced can be used for cooking and can save around USD 40.17 in natural gas. Therefore, the biodigester is a potential tool to mitigate the harmful effects of coffee cultivation on the surrounding ecosystem and can project coffee production in a sustainable direction.

Full-State Feedback of Uncertain Multi-Input Systems

2020 ◽  
pp. 134-168
Author(s):  
Yang Zhu ◽  
Miroslav Krstic
Keyword(s):  
Adaptive Control ◽  
Delay Systems ◽  
Global Stabilization ◽  
State Estimator ◽  
The Third ◽  
State Measurement ◽  
Full State ◽  
Full State Feedback ◽  
Single Input

This chapter investigates adaptive control for uncertain multi-input LTI systems with distinct discrete actuator delays. In parallel with the single-input case in the third chapter, four types of basic uncertainties come with multi-input LTI time-delay systems. Different combinations of the four uncertainties above result in different design difficulties. For example, when the full-state measurement of the transport PDE state is available, the global stabilization is acquired, whereas when the actuator state is not measurable and the delay value is unknown at the same time, the problem is not solvable globally, since the problem is not linearly parameterized. The chapter then summarizes the different collections of uncertainties for the multi-input case. When some of the four variables are unknown or unmeasured, the basic idea of certainty-equivalence-based adaptive control is to use an estimator (a parameter estimator or a state estimator) to replace the unknown variables in the PDE-based framework in the previous chapter, and carefully select their adaptive update laws based on Lyapunov-based analysis.

scholarly journals MieLab: A Software Tool to Perform Calculations on the Scattering of Electromagnetic Waves by Multilayered Spheres

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Ovidio Peña-Rodríguez ◽  
Pedro Pablo González Pérez ◽  
Umapada Pal
Keyword(s):  
Electromagnetic Radiation ◽  
Graphical User Interface ◽  
Electromagnetic Waves ◽  
Software Tool ◽  
Virtual Laboratory ◽  
Small Particles ◽  
The Third ◽  
Functional Behavior ◽  
Architectural Model ◽  
Friendly Graphical User Interface

In this paper, we present MieLab, a free computational package for simulating the scattering of electromagnetic radiation by multilayered spheres or an ensemble of particles with normal size distribution. It has been designed as a virtual laboratory, including a friendly graphical user interface (GUI), an optimization algorithm (to fit the simulations to experimental results) and scripting capabilities. The paper is structured in five different sections: the introduction is a perspective on the importance of the software for the study of scattering of light scattering. In the second section, various approaches used for modeling the scattering of electromagnetic radiation by small particles are discussed. The third and fourth sections are devoted to provide an overview of MieLab and to describe the main features of its architectural model and functional behavior, respectively. Finally, several examples are provided to illustrate the main characteristics of the software.

Changes in skin microcirculation in response to low-intensity electromagnetic radiation of the millimeter range

2020 ◽  
Vol 60 (9) ◽  
pp. 605-609
Author(s):  
Elena N. Chuyan ◽  
Natalya S. Tribrat ◽  
Elviza R. Dzheldubayeva
Keyword(s):  
Blood Flow ◽  
Electromagnetic Radiation ◽  
Contact Point ◽  
Physical Factor ◽  
Biologically Active ◽  
Tissue Blood Flow ◽  
Microvascular Endothelium ◽  
Doppler Flowmetry ◽  
Low Intensity ◽  
The Third

The tissue microhemodynamics plays a significant role in a tissue homeostasis. Any pathological processes were changes in functioning of microhemodynamics. This is causes is significant interesting to safe methods for its correction. One of such methods is exposure to low-intensity electromagnetic radiation of the millimeter (MM) range, which has pronounced of biological activity. The aim of the work was to identify changes in the processes of microcirculation in human skin when exposed to a low-intensity EMR MM range (wavelength - 7.1 mm; power flux density - 0.1 mW/cm2). The study was conducted on 40 volunteer girls aged 18-20 years. The exposure of low-intensity MM radiation was carried out daily for 10 days with an exposure of 30 minutes on the area of biologically active area GI-4. Microcirculation indices were recorded by laser Doppler flowmetry both in the area of influence of MM radiation (contact point of registration) and in the symmetrical effect of the area (distant point) to detect local and systemic changes in tissue blood flow under the action of this physical factor. The results of the study revealed for the first time that when exposed to low-intensity MM radiation, local changes in tissue blood flow in the contact point area were observed, manifested in changes in myogenic and endothelial oscillatory activity, starting from the first sessions of exposure, which indicates a decrease in peripheral resistance of precapillary sphincters and an increase in secretory activity of microvascular endothelium; changes in neurogenic oscillations-starting from the third session, which is accompanied by a decrease in arteriolar resistance; changes in pulse fluctuations - during the last tenth session of exposure, which is an indication of an increase in arteriolar blood filling. These changes were maintained during the entire period of exposure to this physical factor. Systemic changes in microcirculation parameters at a distant symmetrical point during the course action of MM radiation were characterized by changes in the neurogenic oscillator component, starting from the third session of exposure, and changes in the amplitude of endothelial and pulse oscillations - during the tenth session.

Research on Image Feature Information of Resisting JPEG Compression

2011 ◽  
Vol 121-126 ◽  
pp. 2190-2194
Author(s):  
Chao Kui Wu ◽  
Liang Yong Huang
Keyword(s):  
Image Compression ◽  
Quality Factor ◽  
Discrete Cosine Transform ◽  
Jpeg Compression ◽  
Experimental Results ◽  
Image Feature ◽  
Cosine Transform ◽  
The Third ◽  
Feature Information

To solve the image feature information on the robustness of JPEG compression problems, we use the third layer of wavelet of images to decompose the approximation sub-band coefficients as the image feature information, analyze the characteristics of the discrete cosine transform in JPEG compression so as to compare the robustness of image feature information under different quality of JPEG compression. The experimental results show that: make the image compression quality factor more than the standard JPEG, the approximate sub-band coefficients of image wavelet as the image feature information has better robustness, and their difference is less than or equal to a smaller threshold.

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