scholarly journals Study of the Influence of Main Parameters of the Regenerator Ginning Machine on the Qualitative Indicators of the Fibers and Seeds

2021 ◽  
Vol 304 ◽  
pp. 03001
Author(s):  
Azimjon Parpiyev ◽  
Ilkhom Sabirov ◽  
Alisher Usmankulov ◽  
Nodir Navruzov
Keyword(s):  
Quality Indicators ◽  
Mechanical Damage ◽  
Short Fiber ◽  
Urgent Problem ◽  
Working Chamber ◽  
Second Stage ◽  
Fiber Technology ◽  
Spun Fiber ◽  
Two Stages

Since cotton ginning in Uzbekistan is carried out mainly by saw gins, this article proposes a technology for the process of cotton ginning, regeneration, and purification of fibrous waste. The process of regeneration and purification of fibrous waste is an urgent problem for the cotton ginning industry since the composition of fibrous waste contains about 80% of spun fiber. Technology “The process of separating the fiber from seeds” was carried out in two stages: in the first stage of separating the fiber from seeds, a low density of the raw roller of the saw gin took place, while the productivity remained unnamed. After the first stage of separating the fiber from the seeds, the fiber was cleaned in fiber cleaners. The fibrous waste separated in the fiber cleaner was mixed with the seeds after the first stage of separating the fiber from the seeds and fed to the second stage of separating the fiber from the seeds. This paper proposes a technology for the regeneration and purification of fibrous waste, separated during fiber purification. The influence of the length of the seed comb pegs when ginning a mixture of progressed seeds and fibrous waste on gin using the 1DR-119 regenerator on the gin parameters and the quality of the resulting fiber has been studied. A diagram of an experimental technological process is proposed and the results of production tests carried out at “JSC Dalverzin Buttermilk Cleaning” are presented. Experimental dependences of productivity, quality indicators of fiber, and seeds on the length of the splitting of the seed comb were obtained. In this case, the length of the pegs of the seed comb was studied in the aisles from 95 to 125 mm. The results of the experiments showed that with the lengthening of the heads of the seed comb, the residence time of the seeds in the working chamber increases, which entails a slight decrease in productivity and an increase in the share of short fiber in the product, but when the length of the heads of the seed comb is 125 mm, lint prevails in the mass of fibrous products. Having a lower specific gravity compared to fiber, causing a decrease in the seed throughput of the regenerator gin. Analyzing the results of studies of the effect of the length of the pegs on the quality indicators of fiber and seeds after the second stage of ginning, it was revealed that with a decrease in the pubescence of the seeds emerging from the working chamber, their mechanical damage increases, which leads to an increase in the fiber of broken seed and such a hard-to-remove defect as a peel with fiber. Based on the research results obtained during processing on the 1DR-119 regenerator gin of a mixture of ginned seeds with the fibrous waste of fiber cleaners at different lengths of the seed comb splints, the most acceptable length of the seed comb is 105-115 mm, since this produces a standard fiber with a staple mass length of 30.1 – 29.9 mm, meeting the standards.

A novel two-stage method of plant seedlings classification based on deep learning

2021 ◽  
pp. 1-11
Author(s):  
Tianhong Dai ◽  
Shijie Cong ◽  
Jianping Huang ◽  
Yanwen Zhang ◽  
Xinwang Huang ◽  
...  
Keyword(s):  
Deep Learning ◽  
Learning Technology ◽  
Two Stage ◽  
Second Stage ◽  
Stage Classification ◽  
Different Types ◽  
Two Stages ◽  
Plant Seedlings

In agricultural production, weed removal is an important part of crop cultivation, but inevitably, other plants compete with crops for nutrients. Only by identifying and removing weeds can the quality of the harvest be guaranteed. Therefore, the distinction between weeds and crops is particularly important. Recently, deep learning technology has also been applied to the field of botany, and achieved good results. Convolutional neural networks are widely used in deep learning because of their excellent classification effects. The purpose of this article is to find a new method of plant seedling classification. This method includes two stages: image segmentation and image classification. The first stage is to use the improved U-Net to segment the dataset, and the second stage is to use six classification networks to classify the seedlings of the segmented dataset. The dataset used for the experiment contained 12 different types of plants, namely, 3 crops and 9 weeds. The model was evaluated by the multi-class statistical analysis of accuracy, recall, precision, and F1-score. The results show that the two-stage classification method combining the improved U-Net segmentation network and the classification network was more conducive to the classification of plant seedlings, and the classification accuracy reaches 97.7%.

Optimization of Rolling Modes on the Mill 1700 of JSC "ArselorMittal Temirtau" with Aim to Increase Quality of Sheet Rolled Products

2015 ◽  
Vol 1095 ◽  
pp. 786-794
Author(s):  
A.B. Naizabekov ◽  
V.A. Talmazan ◽  
S.N. Lezhnev ◽  
E.A Panin ◽  
А.S. Erzhanov ◽  
...  
Keyword(s):  
Surface Defects ◽  
Mechanical Damage ◽  
Rolling Process ◽  
Rolled Sheet ◽  
Strip Rolling ◽  
Technological Factors ◽  
Second Stage ◽  
Sheet Surface ◽  
Cold Rolled

Used the influence of technological factors of the rolling process on the intensity of the rolling out of the defect to determine the value of deformation and the coefficient of use of the plasticity resource. Introduced the notion of residual coefficient of plasticity resource in the second stage of transformation of the defect. Found that the causes of deterioration of the quality of cold-rolled sheet can be numerous defects of mechanical origin, caused by mechanical damage of the sheet surface. Conducted an analysis of profiles rolling modes, rolled on the mill 1700. With the use of existing methods calculated DUPR on workshop modes of rolling of specified profiles with and without considering the surface defects. Carried an optimization of the modes of strip rolling with surface defects.

scholarly journals Madrasah Principal Leadership Role in Improving Teachers’ Performance

2021 ◽  
Vol 1 (1) ◽  
pp. 10
Author(s):  
Sarmi Sinta Putri ◽  
Safri Mardison
Keyword(s):  
Principal Leadership ◽  
Program Planning ◽  
Preliminary Observation ◽  
Leadership Role ◽  
Data Display ◽  
Learning Program ◽  
Second Stage ◽  
Two Stages

This study aims to describe the role of the madrasah principal in improving teachers’ performance. This was a descriptive qualitative study. Observation, interviews, and documentation were used to collect the data. The source of data were the principal and teachers of MTsN 4 Muko-muko. Data were analyzed in two stages: the first stage was preliminary observation and the second stage was the research which included three steps, namely data reduction, data display, and data verification. Trustworthiness data were tested by conducting triangulation. The result indicated that principal leadership in improving the quality of teachers’ performance included Discipline Development Supervision Program (PPD), Supervision and Evaluation (SDE) activity, and Learning Program Planning. These findings are the basic of how discipline, supervision, and learning program planning become the indicators of guidance to improve the quality of teachers’ performance.    

scholarly journals PENGGUNAAN KARTU KUARTET UNTUK MENINGKATKAN PEMAHAMAN KEBERAGAMAN SENI TRADISI NUSANTARA PADA SISWA SEKOLAH DASAR

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Karsono ◽  
Yudianto Sujana ◽  
Joko Daryanto ◽  
Ngadino Yustinus
Keyword(s):  
Elementary School ◽  
Learning Process ◽  
Research Approach ◽  
Traditional Art ◽  
Is Implementation ◽  
Second Stage ◽  
Action Research Approach ◽  
Two Stages ◽  
Traditional Arts

<p>The purpose of this research is to improve the quality of the learning process subjects Culture Art and Skills in elementary school, especially in understanding of the diversity of Indonesian traditional art. This research was conducted in two stages. First, to develop a media card quartet, and second stage is implementation of the themed quartet card into the learning process in the classroom. Research methods use classroom action research approach because the quartet card media was subsequently used in the learning process in the classroom to improve understanding. Source of data collected by conducting interviews, tests, observations, and documentation. The analysis of the data using Miles and Hubberman’s interactive model, includes the step of data reduction, data display, and conclusion. The results showed that the use of card-themed quartet can enhance students' understanding of elementary school SDN 01 Jatisawit and SDN Dilem in the diversity of Indonesian traditional art material. Keywords: instructional media, cards quartet, the diversity of traditional arts.</p><p>Penelitian ini hendak memperbaiki kualitas proses pembelajaran mata pelajaran Seni Budaya dan Keterampilan (SBK) di sekolah dasar (SD) dalam aspek pemahaman peserta didik akan materi pembelajaran keragaman seni tradisi nusantara. Secara garis besar penelitian ini dilakukan dalam dua tahapan. Tahapan pertama melakukan pengembangan media kartu kuartet, dan tahapan kedua yaitu tahap implementasi kartu kuartet bertema budaya nusantara tersebut ke dalam proses pembelajaran di kelas. Metode penelitian menggunakan pendekatan penelitian tindakan kelas karena media kartu kuartet yang dibuat selanjutnya digunakan dalam proses pembelajaran di kelas untuk meningkatkan pemahaman materi keragaman seni tradisi. Sumber data dikumpulkan dengan melakukan wawancara, tes, observasi, dan dokumentasi. Sedangkan analisis data menggunakan model analisis interaktif dari Miles dan Huberman meliputi tahap reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian<br />memperlihatkan bahwa penggunaan kartu kuartet bertema seni tardisi nusantara dapat meningkatkan pemahaman siswa sekolah dasar SDN 01 Jatisawit dan SDN Dilem, dalam materi keberagaman seni tradisi nusantara.</p>

Rubberised fabric for fuel soft storage tanks*

2018 ◽  
Vol 45 (7) ◽  
pp. 322-324
Author(s):  
Yu.N. Rybakov ◽  
A.V. Dedov ◽  
D.S. Plokhoi ◽  
D.V. Kolotilin
Keyword(s):  
Diffusion Processes ◽  
Motor Fuel ◽  
Residual Monomer ◽  
Experimental Conditions ◽  
Second Stage ◽  
Before And After ◽  
Nitrile Rubbers ◽  
Two Stages ◽  
Kinetics Of

The kinetics of extraction of dibutyl sebacinate by different grades of motor fuel from rubberised fabric based on a blend of nitrile rubbers SKN-26M and SKN-40M was investigated. The kinetics was determined according to the GOST 9.030-74 standard from the change in weight of the specimen after holding in fuel at 50°C and drying. The change in quality of the fuel after contact with the fabric was recorded from the change in the content of existent gum in fuel according to GOST 1567-97 (ISO 6246-95) and its acidity according to GOST 5985-79 before and after contact with the rubberised fabric. It was shown that the process of extraction proceeds in two stages, the time of the first of which under experimental conditions is not dependent on the type of fuel. The rate of the first stage is much higher than the rate of the second stage. The relation of rates and proportion of extracted fuel at the first and second stages depends on the type of fuel. It can be asserted that the surplus amount of extracted substances is made up of impurities, which include residual monomer or its derivatives and substances used in the synthesis of the rubber. The mechanism of extraction with extractant counterflow into the vulcanisate and its dependence on the grade of petrol is proposed, based on allowance for the diffusion processes in the system.

Do Teacher Attitudes Impact TeachingThrough Information Technology

2017 ◽  
Vol 4 (24) ◽  
Author(s):  
Suman Kumari Katoch
Keyword(s):  
Information Technology ◽  
Study Data ◽  
Survey Method ◽  
School Teachers ◽  
Second Stage ◽  
Good Sample ◽  
Two Stages ◽  
Quality Of Research ◽  
Selection Of

Teachers’ styles, and mainly their attitudes, are strong context outcomes, rooted in experience and do not become automatic routine conducts, in the sense that they are developed via very slow interactions and become well established constructs for each individual only after some time. In that sense attitudes can be modified only by each individual, when he/she becomes aware, via elements and evidence, that new postures would be better to deal with the world around. In the present study data regarding the attitude of teachers towards information technology was gathered with the help of survey method. All the school teachers of districts Bilaspur and Hamirpur of Himachal Pradesh constituted the population of the study. In order to ensure high quality of research, selection of a good sample is must. For this purpose sampling was done at two stages. At the first stage 14 schools were selected and in the second stage 150 teachers were selected randomly from the each selected school. Keeping in view the nature of the present study the investigator used the standardized tool, “Attitude towards Information Technology Scales. The reliability of the tool is 0.88. To find out the significance of difference between the various groups ‘t’-test was applied. The findings of the study revealed that gender-wise, locality-wise, school teachers do not differed significantlyin their attitude towards information technology.

Synthesis of the Missile Homing System Taking into Account the Dynamic Characteristic of the Measurement Elements

2019 ◽  
Vol 20 (4) ◽  
pp. 251-256 ◽  
Author(s):  
. Do Quang Thong
Keyword(s):  
Dynamic Characteristic ◽  
Dynamic Characteristics ◽  
Dynamic Properties ◽  
Optimization Method ◽  
Frequency Noise ◽  
Negative Effects ◽  
Second Stage ◽  
Basic Functions ◽  
Two Stages

Several various missile homing systems (MHS) have been developed in recent years. However, to the best of our knowledge, these systems do not take into account the dynamic characteristics of the measurement elements (ME). Such existing systems can only work well when the MEs have a small inertia and large damping. Thus in general case, it is necessary to consider the dynamic characteristics of the MEs with the big inertia. In addition, using the MEs with the big inertia, the MHSs is able to remove the high-frequency noise. However, taking into account the dynamic properties of the MEs causes difficulties in determining the transfer function (PF) of the normal acceleration stability system and the synthesis of MHSs. Therefore, in this paper, we propose an effective mathematical model of the missile homing system, which takes into consideration the dynamic characteristics of the MEs. In addition, this model allows synthesizing the high accuracy MHSs, and utilizing the MEs with the inertia equivalent to the inertia of the rudder actuator. To accomplish that, the proposed system is composed of two stages. In the first stage, the MHSs, which do not incorporate the dynamic characteristics of the MEs, is presented in detail. Then, we analyze and estimate the effect of the dynamic characteristics of the MEs on the performance of the MHSs. In the second stage, we propose a novel MHS, which takes into account the dynamic characteristics of the MEs. The proposed system is implemented based on the basic functions in the Control system toolbox in MATLAB, and designed by the parametric optimization method. The simulation results indicate that, our proposed system outperforms the conventional MHSs in term of reducing the negative effects of the dynamic characteristic of the MEs on the quality of the MHS.

Optimizing the RSW Process Quality of Auto-Body via the Taguchi Method and a Neural-Genetic Approach

2010 ◽  
Vol 97-101 ◽  
pp. 3899-3904 ◽  
Author(s):  
Hsuan Liang Lin ◽  
Chang Pin Chou
Keyword(s):  
Shear Strength ◽  
Taguchi Method ◽  
Back Propagation ◽  
Integrated Approach ◽  
Welding Parameter ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Second Stage ◽  
Two Stages

This paper applies an integrated approach using the Taguchi method, neural network (NN) and genetic algorithm (GA) to optimize the tensile-shear strength of resistance spot welding (RSW) specimens in automotive industry. The proposed approach consists of two stages. First stage executes initial optimization via Taguchi method to construct a database for the NN. In second stage, a NN with Levenberg-Marquardt back-propagation (LMBP) algorithm is used to provide the nonlinear relationship between factors and the response. Then, a GA is applied to obtain the optimal factor settings. The experimental results showed that the tensile-shear strength of the optimal welding parameter via the proposed approach is better than apply Taguchi method only.

scholarly journals A new concept in minimally invasive embryo transfer

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Jarosław Wieczorek ◽  
Ewa Stodolak-Zych ◽  
Krzysztof Okoń ◽  
Jurij Kosejuk ◽  
Magdalena Bryła ◽  
...  
Keyword(s):  
Embryo Transfer ◽  
Material Properties ◽  
Histopathological Examination ◽  
Second Stage ◽  
Embryo Cultures ◽  
Low Efficiency ◽  
Two Stages ◽  
New Generation

AbstractConsiderable variation in embryo transfer (ET) catheter types, diverging opinions on their quality and functionality, complications following the insertion of catheters, low efficiency of the application of ET methods in humans, and their widely varying efficiency in animals demonstrate the need to improve ET methods and to look for new types of catheters. Such an opportunity is offered by the introduction of catheters made of new-generation biomaterials. This study was aimed to introduce a new generation of biomaterials into reproductive biotechnology. New-generation materials were compared with materials that have been used for many years, and the functionality of newly produced catheters was compared in vivo. Five types of biomaterials were tested: polycaprolactone (PCL), dibutyryl chitin (DBC), polypropylene (PP), polyethylene (PE) and polylactide (PLA). The study was carried out in two stages. Firstly, the basic utility parameters such as geometric stability, surface structure and catheter resistance were evaluated. Subsequently, the biocompatibility of selected biomaterials in embryo cultures was examined, and the development potential of the obtained blastocysts was evaluated. In the second stage, in in vivo with live animals, the biomaterials were tested for biocompatibility and the obtained catheters were examined for their ET functionality. Efficiency with the use of the newly produced catheters was determined, the quality of the blastocysts obtained after embryo culture in the uterus was assessed, and oviducts were subjected to histopathological examination after embryo transfer. Of the tested biomaterials, only polyethylene (PE) showed adequate biological and material properties and proved suitable for production of ET catheters.

scholarly journals SAÚDE MENTAL E TRABALHO: a realidade dos trabalhadores do SUAS

2021 ◽  
Vol 7 (2) ◽  
pp. 181-194
Author(s):  
Tassiana Algarte Fernandes ◽  
Regina Celia de Souza Beretta
Keyword(s):  
Social Assistance ◽  
Daily Practice ◽  
Well Being ◽  
Physical And Mental Health ◽  
Online Questionnaire ◽  
Political Issues ◽  
Second Stage ◽  
The Family ◽  
Two Stages

The Unified Social Assistance System (SUAS) emerges through the National Social Assistance Policy (PNAS) and establishes actions aimed at the population served, but also at the services and their physical, professional and management structure. And it is in this contrast between PNAS and reality, that working conditions emerge as a negative point in the daily practice of SUAS workers and the existing physical and mental illness. The study described here, sought to understand the work relationships and how it affects the SUAS worker's life, about physical and mental health, well-being, and the quality of life of the professional and his family, since the illness and stress have a direct impact on the family group. The survey was integrated by SUAS professionals who work in the State of São Paulo, and was developed in two stages, the first of which was through an online questionnaire, with 24 questions (assertive and essay) and was answered by 189 workers. The second stage included two focus groups, with the participation of 24 professionals, who were selected from among those who had answered the first part of the study. The results obtained pointed to the existence of several factors that interfere in the quality of work, such as lack of structure, reduced staff, management failures, political issues, hierarchical relationships, and overload that directly affect the health of these professionals, demanding greater attention to the health of the worker.

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