scholarly journals Forming recommendations for the development of a high-productivity rolling press advanced construction

2018 ◽  
pp. 402-414
Author(s):  
K.V. Baiul ◽  
S.V. Vashchenko ◽  
A.Yu. Khudyakov ◽  
N.A. Solodkaya ◽  
E.B. Prokudina
Keyword(s):  
High Performance ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Monitoring And Control ◽  
High Productivity ◽  
Technological Efficiency ◽  
Wide Range ◽  
The Press ◽  
Hydraulic Devices ◽  
And Control

The aim of the work is to develop technical solutions aimed at creating a high-performance roller briquette press. The results of previous studies and the experience of creating roller presses of various designs, evaluating their production and technological efficiency are summarized. It was established that the basis for the development of an improved press design should be based on principles that ensure its simplicity, decrease in metal consumption, size, ease of operation, as well as the ability to provide the required physical and mechanical properties and quality of briquettes. It is shown that these principles can be implemented in the process of modernization of roller presses created earlier at the Institute of Ferrous Metallurgy. The roll press can be modernized by using mechanical and hydraulic devices to protect the rolls from overloading, developing new effective ways of attaching bandages and drive elements, using modern monitoring and control devices to regulate the operation of the press. Expansion of technological capabilities of the press is provided by using devices for distribution and pre-compaction of the briquetted charge. The choice of a rational scheme of deformation and calibration of the working surfaces of the press rolls ensures the optimization of the energy and power parameters of briquetting. The paper formulates recommendations and requirements for the creation of an improved high-performance roller press for briquetting a wide range of small fractional raw materials. Proposed a fundamental solution to the layout of the press.

scholarly journals Enabling Smart Buildings by Indoor Visible Light Communications and Machine Learning

2019 ◽  
Author(s):  
Shuping Dang ◽  
Guoqing Ma ◽  
Basem Shihada ◽  
Mohamed-Slim Alouini
Keyword(s):  
Machine Learning ◽  
Visible Light ◽  
Data Transmission ◽  
Visible Light Communications ◽  
Monitoring And Control ◽  
Smart Building ◽  
Wide Range ◽  
Tremendous Amount ◽  
Processing Techniques ◽  
And Control

<pre>The smart building (SB), a promising solution to the fast-paced and continuous urbanization around the world, is an integration of a wide range of systems and services and involves a construction of multiple layers. The SB is capable of sensing, acquiring and processing a tremendous amount of data as well as performing proper action and adaptation accordingly. With rapid increases in the number of connected nodes and thereby the data transmission demand in SBs, conventional transmission and processing techniques are insufficient to provide satisfactory services. To enhance the intelligence of SBs and achieve efficient monitoring and control, both indoor visible light communications (VLC) and machine learning (ML) shall be applied jointly to construct a reliable data transmission network with powerful data processing and reasoning abilities. In this regard, we envision an SB framework enabled by indoor VLC and ML in this article.</pre>

scholarly journals Programmable receptors enable bacterial biosensors to detect pathological biomarkers in clinical samples

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Hung-Ju Chang ◽  
Ana Zúñiga ◽  
Ismael Conejero ◽  
Peter L. Voyvodic ◽  
Jerome Gracy ◽  
...  
Keyword(s):  
High Performance ◽  
Limit Of Detection ◽  
Clinical Samples ◽  
Monitoring And Control ◽  
Modular Assembly ◽  
E Coli ◽  
Naked Eye ◽  
Synthetic Receptor ◽  
And Control ◽  
Do So

AbstractBacterial biosensors, or bactosensors, are promising agents for medical and environmental diagnostics. However, the lack of scalable frameworks to systematically program ligand detection limits their applications. Here we show how novel, clinically relevant sensing modalities can be introduced into bactosensors in a modular fashion. To do so, we have leveraged a synthetic receptor platform, termed EMeRALD (Engineered Modularized Receptors Activated via Ligand-induced Dimerization) which supports the modular assembly of sensing modules onto a high-performance, generic signaling scaffold controlling gene expression in E. coli. We apply EMeRALD to detect bile salts, a biomarker of liver dysfunction, by repurposing sensing modules from enteropathogenic Vibrio species. We improve the sensitivity and lower the limit-of-detection of the sensing module by directed evolution. We then engineer a colorimetric bactosensor detecting pathological bile salt levels in serum from patients having undergone liver transplant, providing an output detectable by the naked-eye. The EMeRALD technology enables functional exploration of natural sensing modules and rapid engineering of synthetic receptors for diagnostics, environmental monitoring, and control of therapeutic microbes.

Ceramic Composition Material with Mullite Crystals Obtained from the Clayy Raw Material of Yakutia

2020 ◽  
Vol 992 ◽  
pp. 253-258
Author(s):  
M.P. Lebedev ◽  
V.N. Tagrov ◽  
E.S. Lukin
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Practical Interest ◽  
Physical And Mechanical Properties ◽  
Ceramic Materials ◽  
Strength Properties ◽  
Raw Material ◽  
Composition Material ◽  
Material Base ◽  
Wide Range

The article deals with the manufacture of modern structural ceramic materials from clay and loam deposits of the Republic of Sakha (Yakutia). The importance and relevance of the development of the production of building materials from local raw materials is emphasized, since this will certainly affect the effectiveness of the construction complex as a whole. The successful development of the construction complex is capable of not only stimulating growth in all sectors of the economy, but also contributes to solving the most pressing social problems. Today, Yakutia has huge reserves of mineral raw materials for the production of a wide range of building materials and products. Of practical interest are wall materials made from clay soils. Given the features of the region’s raw material base, this work focuses on additional processing of traditional material. Controlling the complex physicochemical and structural-mechanical transformations that occur during heat treatment, a methodology has been developed for creating a composite material that will allow competitive innovative materials with enhanced strength properties to be produced with a reinforcing element with a glassy phase matrix of mullite crystals. The fabricated samples have a wide range of physical and mechanical properties and allow using it as a high-quality structural building ceramics, as well as industrial floor technical tile.

Use Patterns and Residual Levels of Organophosphate Pesticides on Vegetables in Trinidad, West Indies

1999 ◽  
Vol 82 (4) ◽  
pp. 991-996 ◽  
Author(s):  
Ivan Chang Yen ◽  
Isaac Bekele ◽  
Carlyle Kalloo
Keyword(s):  
Regulatory Agencies ◽  
Organophosphate Pesticides ◽  
Monitoring And Control ◽  
Pesticide Application ◽  
Use Patterns ◽  
Application Rates ◽  
Island State ◽  
Wide Range ◽  
Pirimiphos Methyl ◽  
And Control

Abstract The twin-island state of Trinidad and Tobago produces much of the fresh fruit and vegetables consumed locally, although some are exported to Europe and North America. On average, approximately 1500 tons of pesticides are imported annually, of which about 10-15% are organophosphates. A survey of local farmers revealed that a wide range of pesticides are used and that the same pesticides are used on several crops to control different pests. Application rates exceeding manufacturers' recommendations are also common, as is the disregard of recommended preharvest intervals after pesticide application. Praedial larceny and subsequent sale of freshly sprayed crops also contribute to the risks posed to consumers by pesticide residues. A market basket survey of produce conducted between October 1996 and May 1997 in Trinidad for organophosphate pesticides showed that 10% of produce exceeded the internationally acceptable maximum residue limits (MRLs) for the respective pesticides. Celery constituted 6.5% of all such samples, with over 83% of celery samples exceeding the MRL. Organophosphate pesticides detected were methamidophos, triazophos, prophenofos, diazinon, ethion, pirimiphos methyl, malathion, and dimethoate, with the first 4 being the most commonly detected. There is an urgent need for comprehensive monitoring and control of pesticides on produce by local regulatory agencies, especially because the above data relate only to one class of pesticides. The education of farmers on safe operating practices regarding pesticide application and observation of recommended preharvest intervals for applied pesticides is also required.

scholarly journals Study on Topology and Control Strategy of High-Precision and Wide-Range Hybrid Converter for Photovoltaic Cell Simulator

Energies ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 39
Author(s):  
Jianfei Zhao ◽  
Minqi Hua ◽  
Tingzhang Liu ◽  
Tao Yu
Keyword(s):  
Control Strategy ◽  
Power Supply ◽  
High Performance ◽  
Photovoltaic Cell ◽  
Programmable Logic ◽  
Motor Simulation ◽  
Hybrid Topology ◽  
Wide Range ◽  
Cell Simulation ◽  
And Control

Aiming at the function and technical requirements of high-power photovoltaic cell simulation, high-performance programmable logic power supply and dc motor simulation, a high frequency isolation hybrid topology and control strategy based on current-source/voltage-source converter was studied and proposed. Firstly, according to the performance requirements of photovoltaic cell analog power supply, the control strategy requirements of the high-precision wide-range hybrid topology were proposed. Secondly, the working principle of the new hybrid topology was analyzed. At the same time, the equivalent model of the new hybrid topology was simplified and established, and the overall control strategy of the hybrid topology based on current compensation and sliding mode variable structure was proposed. Finally, simulation and experimental research on the hybrid topology was carried out, and the experimental test of photovoltaic cell simulation was completed. The simulation and experimental results show that the hybrid topology and control strategy proposed in this paper has the characteristics of wide-range output regulation, fast dynamic response, high efficiency and high power factor, and can be used for high performance photovoltaic cell simulation, programmable logic power supply and DC motor simulation.

Wheel-Tooling Gap Measurement System for Conform™ Extrusion Machinery Based on a Capacitive Sensor

2005 ◽  
Vol 127 (2) ◽  
pp. 394-401 ◽  
Author(s):  
K. Khawaja ◽  
L. Seneviratne ◽  
K. Althoefer
Keyword(s):  
Measurement System ◽  
Capacitive Sensor ◽  
Extrusion Process ◽  
Monitoring And Control ◽  
Sensing System ◽  
Gap Measurement ◽  
Wide Range ◽  
On Line ◽  
And Control ◽  
First Time

Conform™ extrusion is a very versatile manufacturing process enabling the production of a wide range of extruded profiles. It is critical to maintain a precise predefined wheel-tooling gap for the efficient running of the Conform extrusion process and to maintain high product quality. However, this is a challenging task due to the hostile environment, high operating temperatures, and required accuracy. An accurate high-temperature gap measurement system for Conform extrusion machinery, using a capacitive sensing system, is developed in this study. The sensor is implemented in a copper Conform extrusion machine, and experimental results are presented, providing for the first time a detailed view of Conform Extrusion gap behavior during production. It is shown that the proposed gap-sensing and control system results in a number of advantages, including reduced machine setup times, reduced flash (waste) rates, and on-line monitoring and control of gap size. The research is carried out in collaboration with Holton Machinery Ltd., a leading manufacturer of Conform Extrusion machinery.

scholarly journals The Effect of Rapid Detection Methods on the Minimization and Prevention of the Risk of Contamination with Aflatoxins in Peanut Products

2021 ◽  
pp. 51-55
Author(s):  
Marieta Stefanova ◽  
Sabka Pashova
Keyword(s):  
Rapid Detection ◽  
High Performance ◽  
Raw Materials ◽  
Detection Methods ◽  
Cross Contamination ◽  
Degree Of Contamination ◽  
Accredited Laboratory ◽  
Rapid Tests ◽  
And Control ◽  
Incoming Inspection

The methods of analysis and control of aflatoxins in peanuts pursue three key objectives: prevent the entry of contaminated peanuts into ready-to-eat products where they are used as an ingredient; prevent and minimize the risk of cross-contamination from contaminated peanuts to fit-for-use raw materials; perform an appropriate incoming inspection through rapid analysis methods for real-time detection of the absence of or the degree of contamination with aflatoxins. The aim of this study was to analyze the effect of rapid detection methods on the minimization and prevention of the risk of contamination with aflatoxins during the incoming inspection in industries using peanut products in the composition of the finished products. The methods of detection of aflatoxins in peanut products are: Mass Spectrometry combined with High - Performance Liquid Chromatography (HPLC), the internal methodology VAL 92:2010 developed by an accredited laboratory and immunochromatographic rapid tests.

scholarly journals Vegetable growing of the Republic of Kazakhstan in terms of pandemic

2021 ◽  
pp. 101-107
Author(s):  
Y. E. Gridneva ◽  
◽  
G. Sh. Kaliakparova ◽  
◽  
◽  
...  
Keyword(s):  
High Performance ◽  
Agricultural Sector ◽  
Raw Materials ◽  
Public Support ◽  
Global Changes ◽  
Vegetable Production ◽  
Industrial Complex ◽  
Vegetable Crops ◽  
Wide Range ◽  
The Republic

With the spread of the COVID-19 pandemic in most countries, after the adoption of emergency measures to prevent the spread of coronavirus infection, various economic measures have been implemented to support the population and stabilize the economy. Global changes are taking place in the world, which is associated with issues of cooperation, management activities using a wide range of methods, transformations in agro-industrial complex. To ensure food security of the country, the role of agricultural sector of the republic is increasing. The authors explored main directions of the effective development of vegetable growing in the southern region of the country. The issues of vegetable-growing subcomplex of agri-industrial complex have been identified. Based on the analysis, their assessment, as well as the potential of the industry's innovative activity are presented. There are great prospects for vegetable market, as the consumption of these products, which are rich in vitamins, minerals necessary for the organism, as well as a balanced diet, is increasing. The solution to the problems is in the transition to industrial technologies, the widespread dissemination of business ideas. The measures necessary to expand the scope of introduction of high-performance technologies in the vegetable sector are considered. The importance of public support for the growth of vegetable production is shown. The destabilizing factors of competitiveness of vegetable growing in Kazakhstan have been identified, proposals on improvement of the efficiency of this industry have been developed which are based on innovation. The authors state the need for innovative restructuring in breeding and seed production of vegetable crops, public variety testing, and control over the use of pesticides. The level of provision of the population with vegetable products, and processing industry with raw materials are determined by the development and location of vegetable growing in the republic, as well as labor provision and transport accessibility of sales markets.

scholarly journals Reconfigurable Multiple Sensing Node for the Automation of Agricultural Field

2019 ◽  
Vol 8 (10) ◽  
pp. 27-31
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Computing System ◽  
Monitoring And Control ◽  
Agricultural Field ◽  
Real Time System ◽  
Agricultural Applications ◽  
High Yields ◽  
External Interface ◽  
And Control

In a real time system, monitoring and control of various parameters of the field is vital .In order to achieve high yields and quality , exact parameters of soils and its necessary inputs to soil need to be put in action. Pest and diseases are also important factors in decline of yield and quality. Considering the various applications of this area, the present paper explains the wireless multi-sensing node for remote monitoring and control system for agricultural applications. This is design with a number of good performance front-end devices and circuits suitable for various types of sensors. Any Sensor device elements can be directly connected without the need of extra circuits. The number of input sensors can be reconfigured with time to time as system demand. The paper describes development and the interface of high performance and low-cost typical features elements. The developed system displayed all the measures field parameters and corresponding set point values on the LCD interface and also are stored in external interface memory for future reference. The developed node can be connected to a personal computing system for decision support using wired RS-232 interface or wireless connectivity using the RF modem from Xbee.

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