scholarly journals AUTOMATED TECHNOLOGICAL PROJECTION OF CLASSIFICATION PROCESSES OF DRY DISPERSIVE MATERIALS

2021 ◽  
pp. 15-21
Author(s):  
Ivan Sevostianov ◽  
Oleksii Tokarchuk ◽  
Maryna Pidlypna
Keyword(s):  
Food Processing ◽  
Raw Materials ◽  
Mass Density ◽  
Wide Spread ◽  
Technological Processes ◽  
Processed Material ◽  
Effective Technology ◽  
Selection Of

Processes of classification (separation) of dry and damp dispersive materials are wide spread in metallurgy, construction, agriculture, in chemical, food, processing industry and in other branches. Therefore, constructors and technologists pay a lot of attention for rationalization of these processes and equipment for their realization in direction of increase of productivity and quality of classification, reliability of machines, decrease of power-consuming. In last decades in Ukraine with development of small and middle farming enterprises there is a tendency of increase of variety of grain raw materials by kinds, grades, humidity, sizes, mass, density and volume of particles. All this should consider food and processing enterprises which often work in quite intensive regime in a period of harvest. So, in last time there become more strong demands to efficiency of technological preparation of processes classification for selection of most rational method, equipment and regimes of processing with consideration of parameters of raw materials and demands of further technological processes (grinding, mixing, heating, cooking, frying etc). Because of that, there will be useful a method of automated technological projection of classification processes of dry dispersive materials, proposed in this article. The method allows to elaborate most effective technology of classification with consideration of volume of output program, time for its fulfilment, geometrical and structural-mechanical properties of processed material, characteristics of available equipment for classification and criterions of efficiency of elaborated technology – productivity and specified operational expenses for its realization. The method can be used as a base for elaboration of a computer program of automated synthesis and analysis of rational technological processes of classification of grain raw materials.

scholarly journals Technical Solution for the Disposal of Solid Slag from Metallurgical Plants with Production of Abrasive Powders

2020 ◽  
Author(s):  
V.B. Ponomarev ◽  
A.V. Kataev ◽  
I.V. Postovoi
Keyword(s):  
Raw Materials ◽  
Copper Slag ◽  
Technical Solution ◽  
Air Classification ◽  
Material Separation ◽  
Air Classifier ◽  
Solid Slag ◽  
Selection Of

This article considers a technical solution to the production of abrasive powders according to the standard ISO 11126 from copper slag and nickel slag with the use of air classification. Justification of the selection of air classifier for the process of classification of copper slag is performed. The results of laboratory studies on the effect of the consumption concentration on the quality of the separation of slag particles in apparatus with an inclined louver lattice with reverse air suction are presented. This article then discusses the dependence of the material separation boundary on the air flow rate through the classifier’s louver. Based on the theoretical calculation, an industrial apparatus with a capacity of 50 t/h on initial raw materials was developed, laboratory tests were industrialized, and the results of industrial tests were shown. Industrial testing was carried out and the results of are shown. Keywords: granulated slag, disposal, abrasive powder, granulometric composition, consumption concentration, air classifier, screening

Development of new technologies for sorting of fibrous cotton stalks by the combined method “ADAU” and production of sowing material

2021 ◽  
Vol 70 (09) ◽  
pp. 7-13
Author(s):  
Şahlar Mahmud oğlu Babayev ◽  
◽  
Camaləddin Ələkbər oğlu Məmmədov ◽  
Səfiyyə İbrahim qızı Məhərrəmova ◽  
◽  
...  
Keyword(s):  
Agricultural Sector ◽  
New Technologies ◽  
Raw Materials ◽  
New Technology ◽  
Absorption Capacity ◽  
Cotton Stalks ◽  
Cotton Yarns ◽  
The Republic ◽  
Selection Of

The article is devoted to the development of technologies for the production of quality sowing material, which is the main problem of cotton growing, which has a greater share in the agricultural sector, which is the basis of the economy of the republic. For this purpose, a new technology for the production of sowing material was developed as a result of the selection of biologically mature yarns during the combined sorting of fibrous cotton yarns, as well as processing of these yarns by the proposed method, and two positive decisions were made by the Intellectual Property Agency. In addition to the mentioned advantages of the proposed technology, the use of low-percentage starch solution, as well as absorbents with high absorption capacity (zeolite or bentonite) in the country to improve the quality of sowing material in the production of sowing material as a result of processing raw materials. indicates that it has indicators. Key words: fiber, cotton, yarn, combined, sorting, sowing material, production, technology

scholarly journals Clinical Procedures for the Prevention of Preeclampsia in Pregnant Women: A Systematic Review

2020 ◽  
Vol 42 (10) ◽  
pp. 659-668
Author(s):  
Nádya Santos Moura ◽  
Maria Luziene Sousa Gomes ◽  
Ivana Rios Rodrigues ◽  
Daniel Lorber Rolnik ◽  
Fabrício Silva Costa ◽  
...  
Keyword(s):  
Systematic Review ◽  
Guideline Development ◽  
Data Extraction ◽  
Qualitative Synthesis ◽  
Manual Search ◽  
The Individual ◽  
Selection Of ◽  
Mcmaster University

Abstract Objective To identify the most effective procedures recommended for the prevention of preeclampsia. Data Sources A systematic review was performed in the following databases: Pubmed/MEDLINE, CINAHL, Web of Science, Cochrane and LILACS via the Virtual Health Library (VHL). A manual search was also performed to find additional references. The risk of bias, the quality of the evidence, and the classification of the strength of the recommendations were evaluated using the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach. Selection of Studies In the initial search in the databases, the total number of articles retrieved was 351, and 2 were retrieved through the manual search; after duplicate articles were removed, 333 citations remained. After a thorough review of the titles and abstracts, 315 references were excluded. Accordingly, 18 articles were maintained for selection of the complete text (phase 2). This process led to the exclusion of 6 studies. In total, 12 articles were selected for data extraction and qualitative synthesis. Data Collection The articles selected for the study were analyzed, and we inserted the synthesis of the evidence in the online software GRADEpro Guideline Development Tool (GDT) (McMaster University and Evidence Prime Inc. All right reserved. McMaster University, Hamilton, Ontário, Canada); thus, it was possible to develop a table of evidence, with the quality of the evidence and the classification of the strength of the recommendations. Data Synthesis In total, seven studies recommended the individual use of aspirin, or aspirin combined with calcium, heparin or dipyridamole. The use of calcium alone or in combination with phytonutrients was also highlighted. All of the studies were with women at a high risk of developing preeclampsia. Conclusion According to the studies evaluated, the administration of aspirin is still the best procedure to be used in the clinical practice to prevent preeclampsia.

Correcting Movement Imbalances with Yoga Therpay

2001 ◽  
Vol 11 (1) ◽  
pp. 15-22
Author(s):  
Marie Janisse
Keyword(s):  
Movement Patterns ◽  
Low Back ◽  
Practical Application ◽  
Yoga Therapy ◽  
Postural Alignment ◽  
Quality Of Movement ◽  
Repetitive Stress ◽  
Selection Of

Yoga teachers and therapists recognize the need for correct postural alignment. The quality of movement is equally important. When a person moves incorrectly, joints deviate from their centers of rotation. Mechanical stress occurs with repeated incorrect movement and results in degeneration of the joint and eventual pain from repetitive stress. Yoga therapists and teachers influence the movement patterns of their students by their choice of âsanas. By identifying an incorrect pattern of movement,a Yoga therapist can be more specific in the selection of âsanas to alleviate pain and to help students avoid pain in the future. This article offers an introduction to the principles of movement balancing and a classification of movement patterns in the low back to demonstrate the practical application of movement balancing in Yoga therapy.

Meta-analysis of Comparative Therapy Outcome Studies: a Reply to Wilson

1982 ◽  
Vol 10 (4) ◽  
pp. 307-310 ◽  
Author(s):  
David A. Shapiro ◽  
Diana Shapiro
Keyword(s):  
Meta Analysis ◽  
Outcome Studies ◽  
Therapy Outcome ◽  
Meta Analyses ◽  
Selection Of

Wilson's recent critique of the authors' appraisal of meta-analysis appears to misunderstand them as claiming more for meta-analysis than they intended. The present paper seeks to clarify consequent confusions concerning selection of studies, the quality of the literature reviewed, the classification of therapies, and the non-identical results of different meta-analyses. It is acknowledged that no single meta-analysis is definitive.

scholarly journals THE QUALITY ANALYSIS OF CHOCOLATE CONFECTIONERY PRODUCTS IN RESTAURANT BUSINESS

2018 ◽  
Vol 64 ◽  
Author(s):  
N.V. Bespalova ◽  
M.M. Gomola ◽  
T.I. Yakovleva
Keyword(s):  
Quality Control ◽  
Raw Materials ◽  
Quality Analysis ◽  
High Quality ◽  
Confectionery Products ◽  
Practical Recommendations ◽  
Selection Of

The article is devoted to the urgent theoretical and practical problems of the quality control of the chocolate confectionery products in cafes and restaurants. The authors analyze the modern approaches to the quality control of the chocolate confectionery products. The practical recommendations can be useful for the process of selection of the high quality raw materials. The criteria for the quality control of the chocolate confectionery products have been given. Some ways to improve the quality of he chocolate confectionery products have been discussed.

scholarly journals Efek Penekanan Dan Pemanasan Pada Proses Pembriketan Biomassa Hasil Torefaksi Terhadap Kualitas Briket

2020 ◽  
Vol 8 (2) ◽  
pp. 17-24
Author(s):  
Ahmad Al Ghozali Hasan ◽  
Amrul Amrul ◽  
M Irsyad
Keyword(s):  
Bituminous Coal ◽  
Water Resistance ◽  
Raw Materials ◽  
Mass Density ◽  
Calorific Value ◽  
Drop Test ◽  
Resistance Testing ◽  
Biomass Waste ◽  
Test Water

Torefaction is one method of utilizing biomass waste into fuel through a thermal process that takesplace at atmospheric pressure with a temperature range of 200-350 ℃ to a solid quality fuelequivalent to sub-bituminous coal. Densification aims to increase biomass mass density. Thecombination of densification and torrefaction is an attractive process option to get high qualitybriquette and pellet fuel. Making briquettes with the hot printing method is able to eliminate theadhesive material so that the process of making briquettes is faster, direct briquettes can be usedwithout a drying process and are able to maintain the calorific value of raw materials. The purposeof this study is to examine the effect of suppression and heating on the briquetting process oftorefaction results on the quality of briquettes based on the physical properties of the drop test,water resistance, combustion temperature and length of combustion. The best quality briquettesfound were 8 tons of briquettes with a temperature of 150 ℃, where the briquette drop test did notlose much material. In water resistance testing, the water absorbed in 8 ton briquettes withtemperature of 150 ℃ is quite low, and when testing the combustion of briquettes is also quite good.Keywords : Torefaction, densification, briquettes, drop test, water resistant, combustion

scholarly journals Physiological quality of parsley seeds in function of size

2021 ◽  
Vol 42 (3Supl1) ◽  
pp. 1499-1510
Author(s):  
Renato Téo de Barros ◽  
◽  
Cibele Chalita Martins ◽  
Tatiane Sanches Jeromini ◽  
Givanildo Zildo da Silva ◽  
...  
Keyword(s):  
Seed Size ◽  
Dry Weight ◽  
Germination Percentage ◽  
Randomized Design ◽  
Physiological Quality ◽  
Completely Randomized Design ◽  
Germination Vigor ◽  
Selection Of

Parsley seeds are commercialized without classification by size during processing, unlike other crops. This classification procedure allows the standardization of seed size for high precision in sowing, disposal of unwanted material, and selection of high quality seeds. The aim of this study was to verify the effect of seed size on germination, vigor, and yield performance of two parsley cultivars. Seeds from eight lots of parsley of ‘Portuguesa’ and ‘Chacareira’ cultivar were separated into three size classes, represented by the seeds retained in the sieves of 0.84, 1.00 and 1.41mm mesh opening. After classification, seeds were evaluated in the laboratory for water content, germination percentage, first count, and thousand seed weight. In the field, the fresh and dry weight of aerial part and the final number of plants (stand) were evaluated after 78 days of sowing. The experimental design was the completely randomized design in an 8 x 3 factorial scheme (eight lots and three sieve opening) with four replicates, for both cultivars. Data obtained were subjected to analysis of variance and means were compared using Tukey test at 5% probability level. It was concluded that the parsley seeds separated by the 1.41 mm sieves showed higher vigor, and consequently, greater success in stand establishment at the field than those separated by other sieve size. The use of sieves in the classification of parsley seeds helps in obtaining lots with superior physiological quality.

scholarly journals BUILDING A DIGITAL RESEARCH METHODOLOGY IRREGULARITIES IN THE SURFACE DENSITY OF NONWOVENS

2021 ◽  
Vol 52 (2) ◽  
pp. 5-10
Author(s):  
Nikolay A. Korobov ◽  
Natal’ya A. Gruzintseva ◽  
Marina A. Lysova ◽  
Boris N. Gusev
Keyword(s):  
Surface Density ◽  
Information Technologies ◽  
Quality Management System ◽  
Raw Materials ◽  
Output Control ◽  
Production Chain ◽  
Technological Processes ◽  
Final Output ◽  
Quality Of Products

Ensuring the required level of quality of products produced by textile enterprises involves not only the final (output) control of its quality indicators, but also ensuring operational control over the relevant characteristics of raw materials and semi-finished products in technological processes throughout the entire production chain of textile material. Within the framework of the functioning of the quality management system of a textile enterprise, when conducting operational monitoring of technological processes, appropriate automated technical controls are required, built with the use of modern information technologies. In this paper, in order to assess the quality of the carding process in the production of combed or carded yarn, a method is proposed for the digital study of the structural unevenness in the surface density of this type of non-woven material, based on the principle of determining the sectorial and radial characteristics for this quality indicator.

scholarly journals MICROSCOPIC EXAMINATION OF WOOL FIBERS IN PRAMENKA FOR THE QUALITY CLASSIFICATION OF RAW WOOL

2020 ◽  
Vol 19 (2) ◽  
Author(s):  
Nadžida MLAĆO ◽  
Amela KATICA ◽  
Velija KATICA ◽  
Almira SOFTIĆ ◽  
Vedad ŠAKIĆ ◽  
...  
Keyword(s):  
Textile Industry ◽  
Organic Waste ◽  
Environmental Problem ◽  
The Body ◽  
Raw Material ◽  
Wool Fibers ◽  
Quality Classification ◽  
Selection Of

In Bosnia and Herzegovina, Montenegro, as well as in most Balkan countries, wool is a major environmental problem. After sheep shearing, farmers usually leave the wool at the shear sites, providing poorly degradable organic waste. The purchase price of such untreated wool is as low as its quality. By this research, we have tried to draw attention, from another aspect, to the quality of wool fibers of certain parts of the body, which is ultimately very important in the textile industry and in the selection of wool for further processing. The cuticle is made from cornfied cells, flakes, located on the surface of wool fibers. One of the significant roles of the cuticle is the protective. Namely, the cuticle protects the wool fibers from various external factors, whether mechanical or physic-chemical (such as ammonia evaporation in poorly maintained facilities, etc.), which can damage the fleece and thus make it less quality. We have found some differences in the flakes position and shape in the wool fibers we investigated, depending on part of the body from which they were sampled. However, by microscopic analyses of samples taken from the root of the tail, we have found that the flakes were much smaller and finer in structure than the arrangement and appearance of the cornified flakes from the rump. In this study, we have compared the appearance and arrangement of flakes of cuticle, which is very important in assessing the quality of wool and its further use as a raw material.

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