Protection Against Electromagnetic Fields by Means of Fractal Screen-Restructor

10.12737/2744 ◽  
2013 ◽  
Vol 20 (4) ◽  
pp. 116-120
Author(s):  
Хачапуридзе ◽  
N. Khachapuridze ◽  
Филиппов ◽  
Yu. Filippov ◽  
Соколовская ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
High Efficiency ◽  
Three Dimensional ◽  
Small Diameter ◽  
Medical Personnel ◽  
Negative Influence ◽  
Electrically Conductive ◽  
Electromagnetic Screen ◽  
Biological Protection ◽  
Made In

To protect medical personnel and other institutions where used low- intensity electromagnetic fields the fractal electromagnetic screen-restructor was developed. This device contains a substrate of bioinert material and installation tool, which is made in the form of electromagnetic circuit, which includes overlapping concentric circles of big and small diameters and flat element located in the centre of the circle formed by the circles of the big diameter. A circle of small diameter located on six radial lines, circles of the big diameter equidistantly in relation to each other and relative to the center of the circles of the big diameter, and the flat element is made in the form of a regular hexagon. The screen was tested and has shown high efficiency. The developed fractal screen is the medical technique and is used to protect personnel from the negative influence of various fields of electro - and radio-technical installations, from unauthorized exposure, as well as for biological protection and correction of the functional state of operators industrially loaded productions. There are many devices designed for protection of an organism from the negative electromagnetic radiation, to maintain and enhance its bioenergetic potential, containing a variety of three-dimensional constructs and two-dimensional plate-a matrix, equipped with various geometric structures of electrically conductive materials, or diminutive volume elements - cylindrical or cone-shaped and their combinations.

scholarly journals High-Performance Laterally Oriented Nanowire Solar Cells with Ag Gratings

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2807
Author(s):  
Yangan Zhang ◽  
Yao Li ◽  
Xueguang Yuan ◽  
Xin Yan ◽  
Xia Zhang
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Three Dimensional ◽  
Polarized Light ◽  
Small Diameter ◽  
Grating Period ◽  
Cutoff Wavelength ◽  
Carrier Recombination ◽  
Grating Diffraction

A laterally oriented GaAs p-i-n nanowire solar cell with Ag gratings is proposed and studied via coupled three-dimensional optoelectronic simulations. The results show that the gratings significantly enhance the absorption of nanowire for both TM and TE polarized light due to the combined effect of grating diffraction, excitation of plasmon polaritons, and suppression of carrier recombination. At an optimal grating period, the absorption at 650–800 nm, which is an absorption trough for pure nanowire, is substantially enhanced, raising the conversion efficiency from 8.7% to 14.7%. Moreover, the gratings enhance the weak absorption at long wavelengths and extend the absorption cutoff wavelength for ultrathin nanowires, yielding a remarkable efficiency of 13.3% for the NW with a small diameter of 90 nm, 2.6 times that without gratings. This work may pave the way toward the development of ultrathin high-efficiency nanoscale solar cells.

Protection of Medical and Industrial Personnel from Exposure to Pathogenic Fields by Means of the Matrix Screen

10.12737/3322 ◽  
2014 ◽  
Vol 21 (1) ◽  
pp. 89-92
Author(s):  
Филиппова ◽  
A. Filippova ◽  
Хачапуридзе ◽  
N. Khachapuridze ◽  
Соколовская ◽  
...  
Keyword(s):  
Human Body ◽  
High Performance ◽  
High Efficiency ◽  
Chemical Elements ◽  
Molecular Genetic ◽  
Wave Interaction ◽  
Negative Influence ◽  
Human Organism ◽  
Electromagnetic Screen ◽  
The Matrix

This paper presents the design of the matrix of the electromagnetic screen. This screen refers to the field of medical equipment, devices, ensuring ecological safety. It can be used for protection of the personnel of enterprises and institutions, including medical, from the negative influence of pathogenic fields of technical and natural origin, for neutralization of weak radiation products of the chemical elements and their compounds and alloys, and also for correction of the functional state of operators industrially loaded productions and drivers of electric vehicles. The task of this design is the improvement of devices for energy impact on human organism, in which due to the introduction of new traits and organization of new ties between the features of the high performance is achieved local shielding of a bioobject and increase its restoration and health characteristics. It is shown that the motivation for the creation of such a matrix of the electromagnetic screen is based on several fundamental provisions of the fields and radiation of biophysics and bioinformatics, mainly on emission characteristics of the human body with account of parameters of functioning of the multi-dimensional molecular-genetic structures on morpho-functional characteristics, anthropometric and other bio-constants of the human body, the effects of information-wave interaction of man and objects of the surrounding world. The authors indicate that the screen was clinically tested and has shown high efficiency.

Parallel 3-D particle-in-cell modelling of charged ultrarelativistic beam dynamics

2015 ◽  
Vol 81 (6) ◽  
Author(s):  
Marina A. Boronina ◽  
Vitaly A. Vshivkov
Keyword(s):  
Distribution Function ◽  
Electromagnetic Fields ◽  
High Efficiency ◽  
Three Dimensional ◽  
The Self ◽  
Beam Dynamics ◽  
Particle In Cell ◽  
Self Consistent ◽  
Longitudinal Effects ◽  
Parallel Code

We present a three-dimensional (3-D) particle-in-cell (PIC) model and parallel code for the self-consistent motion of charged ultrarelativistic beams (${\it\gamma}\sim 10^{3}{-}10^{5}$) in supercolliders. We use the 3-D set of Maxwell’s equations for the electromagnetic fields, and the Vlasov equation for the distribution function of the beam particles. The model incorporates automatically the longitudinal effects, which can play a significant role in the cases of super-high densities. We present numerical results for the dynamics of two focused ultrarelativistic beams with a size ratio 10:1:100. The results demonstrate high efficiency of the proposed computational methods and algorithms, which are applicable to a variety of problems in relativistic plasma physics.

scholarly journals Modification of long-term volatility trading methods based on a delta-neutral strategy

2021 ◽  
Vol 12 (3) ◽  
pp. 70-79
Author(s):  
Arkadiy P. Plotnikov ◽  
Victor P. Glazkov ◽  
Roman A. Shishlov
Keyword(s):  
Financial Markets ◽  
Significant Contribution ◽  
Human Factor ◽  
High Efficiency ◽  
Negative Influence ◽  
Economic Benefits ◽  
Theoretical Research ◽  
Optimal Values ◽  
Made In

Delta-neutral trading strategies for trading volatility allow you to make a profit regardless of the direction of change in the price of the underlying asset. Despite their popularity and high efficiency, they are usually made manually, which makes them less systematic and vulnerable to the negative influence of the human factor (emotions, late actions, erroneous submission of applications, etc.). The article proposes a unified delta- neutral strategy, taking into account several parameters for long-term volatility trading through transactions with underlying assets (futures or stocks) and options on these underlying assets, which creates prerequisites for its automation. The use of the strategy helps to increase the liquidity of investment assets traded on the exchange, increases the receipt of taxes, exchange fees and commissions, which brings great socio-economic benefits. Automation of the strategy significantly simplifies calculations, increases the speed of decision-making and can significantly increase the number of transactions made in the financial markets. In addition, the automatic calculation of the optimal values of the method parameters can make a significant contribution to the theoretical research of the modifications of the volatility trading methods.

Method of high frequency therapy at cows' mastitis during machine milking

2020 ◽  
pp. 9-12
Author(s):  
Viktor E. Lyubimov ◽  
Keyword(s):  
Dairy Cows ◽  
Electromagnetic Fields ◽  
High Frequency ◽  
High Efficiency ◽  
Environmentally Friendly ◽  
Ultrahigh Frequency ◽  
Machine Milking ◽  
High Frequency Electromagnetic Field ◽  
Milking Machine ◽  
Methods Of Treatment

Health of dairy cows ensures human health, so it is important that dairy products do not contain antibiotics that are used to treat any inflammation, including mastitis. In Russia at present, the problem of mastitis in cows exists with both attached and loose housing of cows. Mastitis of dairy cows are the great problem in milking husbandry. Losses from mastitis in milk yield can reach 15-20%. The main reasons for the occurrence of nonspecific mastitis of cows are the shortcomings of the working components of the milking machine: the degree of deterioration of the nipple rubber and the violation of machine milking technology (the reduction in pre-milking time and vacuum fluctuations account for 70% of all causes). Treatment of mastitis with antibiotics is effective, but not environmentally friendly and unacceptable. For the treatment of inflammation of the udder, it is necessary to use more environmentally friendly methods of treatment, one of which is the exposure to ultra-high frequency electromagnetic field tested by medicine. Use of three types of medical-mobile milking machines with the same method of exposure to ultrahigh-frequency electromagnetic fields on cow's nipples through electrodes in milking cups: LPDA-1-UHF, LPDA-2-UHF and LPDA-UHF-30 M, is described in the article. Author proved that cows with subclinical forms of mastitis recovered faster during milking with exposure to the ultrahigh frequency than when treated by antibiotics, and milking with the ultrahigh frequency device helps to recover 82% of the affected quarters with clinical forms and 100% of cows with subclinical forms of mastitis or with udder irritation. The high efficiency of the method of exposure to electromagnetic fields of the ultrahigh frequency during machine milking by means of medical-mobile milking machines LPDA-UHF for the prevention and treatment of mastitis of cows was shown.

Finite Element Modeling for Steel Cord Analysis in Radial Tires

2013 ◽  
Vol 41 (1) ◽  
pp. 60-79 ◽  
Author(s):  
Wei Yintao ◽  
Luo Yiwen ◽  
Miao Yiming ◽  
Chai Delong ◽  
Feng Xijin
Keyword(s):  
Finite Element ◽  
High Efficiency ◽  
Force Measurement ◽  
Three Dimensional ◽  
Local Stress ◽  
Tension Force ◽  
Center Line ◽  
Element Analysis ◽  
Design Variables ◽  
Steel Cord

ABSTRACT: This article focuses on steel cord deformation and force investigation within heavy-duty radial tires. Typical bending deformation and tension force distributions of steel reinforcement within a truck bus radial (TBR) tire have been obtained, and they provide useful input for the local scale modeling of the steel cord. The three-dimensional carpet plots of the cord force distribution within a TBR tire are presented. The carcass-bending curvature is derived from the deformation of the carcass center line. A high-efficiency modeling approach for layered multistrand cord structures has been developed that uses cord design variables such as lay angle, lay length, and radius of the strand center line as input. Several types of steel cord have been modeled using the developed method as an example. The pure tension for two cords and the combined tension bending under various loading conditions relevant to tire deformation have been simulated by a finite element analysis (FEA). Good agreement has been found between experimental and FEA-determined tension force-displacement curves, and the characteristic structural and plastic deformation phases have been revealed by the FE simulation. Furthermore, some interesting local stress and deformation patterns under combined tension and bending are found that have not been previously reported. In addition, an experimental cord force measurement approach is included in this article.

scholarly journals Construction of the Cellulose Nanofibers (CNFs) Aerogel Loading TiO2 NPs and Its Application in Disposal of Organic Pollutants

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1841
Author(s):  
Kang Li ◽  
Xuejie Zhang ◽  
Yan Qin ◽  
Ying Li
Keyword(s):  
High Efficiency ◽  
Sol Gel ◽  
Cellulose Nanofibers ◽  
Three Dimensional ◽  
Good Mechanical Property ◽  
Polar Groups ◽  
Dimensional Network ◽  
Natural Polysaccharide ◽  
Valuable Method ◽  
Adsorption Capability

Aerogels have been widely used in the adsorption of pollutants because of their large specific surface area. As an environmentally friendly natural polysaccharide, cellulose is a good candidate for the preparation of aerogels due to its wide sources and abundant polar groups. In this paper, an approach to construct cellulose nanofibers aerogels with both the good mechanical property and the high pollutants adsorption capability through chemical crosslinking was explored. On this basis, TiO2 nanoparticles were loaded on the aerogel through the sol-gel method followed by the hydrothermal method, thereby the enriched pollutants in the aerogel could be degraded synchronously. The chemical cross-linker not only helps build the three-dimensional network structure of aerogels, but also provides loading sites for TiO2. The degradation efficiency of pollutants by the TiO2@CNF Aerogel can reach more than 90% after 4 h, and the efficiency is still more than 70% after five cycles. The prepared TiO2@CNF Aerogels have high potential in the field of environmental management, because of the high efficiency of treating organic pollutes and the sustainability of the materials. The work also provides a choice for the functional utilization of cellulose, offering a valuable method to utilize the large amount of cellulose in nature.

Advances in coupled axial turbine and nonaxisymmetric exhaust volute aerodynamics for turbomachinery

2020 ◽  
pp. 095441002096645
Author(s):  
Jie Gao ◽  
Chunde Tao ◽  
Dongchen Huo ◽  
Guojie Wang
Keyword(s):  
Performance Improvement ◽  
High Efficiency ◽  
Three Dimensional ◽  
Great Influence ◽  
Aerodynamic Characteristics ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Axial Turbine ◽  
Flow Interactions ◽  
And Performance

Marine, industrial, turboprop and turboshaft gas turbine engines use nonaxisymmetric exhaust volutes for flow diffusion and pressure recovery. These processes result in a three-dimensional complex turbulent flow in the exhaust volute. The flows in the axial turbine and nonaxisymmetric exhaust volute are closely coupled and inherently unsteady, and they have a great influence on the turbine and exhaust aerodynamic characteristics. Therefore, it is very necessary to carry out research on coupled axial turbine and nonaxisymmetric exhaust volute aerodynamics, so as to provide reference for the high-efficiency turbine-volute designs. This paper summarizes and analyzes the recent advances in the field of coupled axial turbine and nonaxisymmetric exhaust volute aerodynamics for turbomachinery. This review covers the following topics that are important for turbine and volute coupled designs: (1) flow and loss characteristics of nonaxisymmetric exhaust volutes, (2) flow interactions between axial turbine and nonaxisymmetric exhaust volute, (3) improvement of turbine and volute performance within spatial limitations and (4) research methods of coupled turbine and exhaust volute aerodynamics. The emphasis is placed on the turbine-volute interactions and performance improvement. We also present our own insights regarding the current research trends and the prospects for future developments.

scholarly journals Pathogenesis and Potential Therapeutic Targets for Triple-Negative Breast Cancer

Cancers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2978
Author(s):  
Chia-Jung Li ◽  
Yen-Dun Tony Tzeng ◽  
Yi-Han Chiu ◽  
Hung-Yu Lin ◽  
Ming-Feng Hou ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Targeted Therapy ◽  
Triple Negative Breast Cancer ◽  
Triple Negative ◽  
High Efficiency ◽  
Early Recurrence ◽  
New Developments ◽  
Great Progress ◽  
Low Toxicity ◽  
Made In

Triple negative breast cancer (TNBC) is a heterogeneous tumor characterized by early recurrence, high invasion, and poor prognosis. Currently, its treatment includes chemotherapy, which shows a suboptimal efficacy. However, with the increasing studies on TNBC subtypes and tumor molecular biology, great progress has been made in targeted therapy for TNBC. The new developments in the treatment of breast cancer include targeted therapy, which has the advantages of accurate positioning, high efficiency, and low toxicity, as compared to surgery, radiotherapy, and chemotherapy. Given its importance as cancer treatment, we review the latest research on the subtypes of TNBC and relevant targeted therapies.

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