scholarly journals Methods of experimental testing operating parts in individual dispenser of mixed fodders

2019 ◽  
pp. 113-121
Author(s):  
Banha, V. ◽  
Krupych, O. ◽  
Yatsko, S.
Keyword(s):  
Experimental Testing ◽  
Body Height ◽  
Statistical Processing ◽  
Optimization Criterion ◽  
Dynamic Mode ◽  
Individual Compound ◽  
Experimental Installation ◽  
Screening Experiment ◽  
Working Bodies ◽  
The Individual

Purpose. Improving the reliability of the results of the study of the working bodies of the individual compound feed dispenser by improving the method of their implementation. Methods. Experimental research of the working bodies in individual metering of feed were carried out using the laws of kinematics and dynamics and with the use of strain gauges. Method planned experiment using the theory of screening experiment, statistical processing of research results with the use PC. Results. The experimental installation has been developed for research of cone and cone-blade working bodies by individual batcher of compound feeds with devices for measuring, registration and transfer of information by electric signals of the current values mass stream in dynamic mode, display and storage of information and control and measuring devices for measurement power of process dosing and irregularity delivery of compound feed. Weight of compound feed in the bunker by individual batcher, changes direction movement stream of compound feed. The technique of experimental researches using the theory of screening experiment by random balance, the factors are equal to their variation, which affect the optimization criterion of the individual feed dispenser, the matrix plan of the screening experiment, the equation for determining the effects factors and the physical and mechanical properties of feed. Conclusions. Research of the working bodies in the individual feed dispenser according to the proposed technique of the random experiment by the random balance method makes it possible to establish significant and insignificant research factors (diameter and speed of the cone working body, height and number of blades, the angle of the cone at its base, the ring gap between the outlet neck of the hopper and the cone working body), to increase the reliability of the results of the experiment. Keywords: individual dispenser, experimental installation, operating part, productivity, optimization criterion, mixed fodder.

scholarly journals Process modeling of the first inter-row cultivation in laboratory conditions

2020 ◽  
Vol 193 ◽  
pp. 01041
Author(s):  
Evgeny Zykin ◽  
Vladimir Kurdyumov ◽  
Svetlana Lazutkina ◽  
Oleg Dmitriev
Keyword(s):  
Process Modeling ◽  
Statistical Processing ◽  
Physical And Mechanical Properties ◽  
Optimization Criterion ◽  
Practical Implementation ◽  
Soil Layers ◽  
Laboratory Conditions ◽  
Independent Process ◽  
Process Factors ◽  
Working Bodies

The paper considers the formation process of secondary soil ridges by working bodies with flat discs during the first mechanized interrow cultivation of crops in laboratory conditions. Taking account of the agrotechnical requirements and the physical and mechanical properties of the soil, we adopted the reference profile of the soil ridge formed during mechanized inter-row cultivation of crops, which can conditionally be accepted as ideal, as well as the original optimization criterion kсэ1 . After practical implementation of studies in the tillage bin and statistical processing of the obtained data, the corresponding equations were obtained in which the independent process factors were expressed in natural and encoded values. It was found that a change in the speed of a cultivator within 1.2 2.4 m / s, with angles of attack>кk of flat discs from 5º to 20º, increases the distance at which the soil is thrown off and the thickness of the soil layers covering the sides and the upper base of the primary ridge (kсэ1 → max). At angles of attack>кk of flat discs within the limits of 25º ... 30º and the speed of the cultivator from 1.2 m / s to 1.6 m / s, an increase in the thickness of the covered soil layers hпр, occurs, and the coefficient kсэ1 is maximum ((kсэ1 = 0.98 with a flat disc diameter of 0.3 m).

scholarly journals Utilization of factor analysis in waterworks engineering

2004 ◽  
Vol 52 (2) ◽  
pp. 121-128
Author(s):  
Petra Nováková
Keyword(s):  
Water Quality ◽  
Factor Analysis ◽  
Quality Indicators ◽  
Water Reservoir ◽  
Statistical Processing ◽  
Point Of View ◽  
Water Quality Indicators ◽  
Quality Of Water ◽  
The Individual

The aim of the work was to elaborate and evaluate the water quality of water reservoir Vranov nad Dyjí. Fresh water was sampled in five different locations of the reservoir (three important tributaries, dam and water captation locality). Ten, the most essential water quality indicators were selected. From the point of view of water quality indicators complexity the most integrated samples were taken in the water captation locality (period 1984 – 2002). At other locations, there were missing dates from the eightieth, but their volume was sufficient for statistical processing.Correlation analyses for the individual locations and dimensions were done as so as determination coefficients for all localities during the time period of 1994 – 2002. The results demonstrate very good allocation of the water captation from the point of view of the water flow.Multiples and factor analysis was done for the period of 1984 – 2002 in the locality Jelení zátoka where the object of water captation is situated. The results of the analysis are nine factors, which influence the water quality of the reservoir. From the point of view of the importance three factors were interpreted.The analyses and results are part of my Ph.D. thesis. The results will be used for other evaluations of the water quality in the reservoir and tributaries, for activities in the catchment’s area and for proposal processing other zones of second level of protected areas.

scholarly journals Relationship of representations about the object of activity and time perspectives for teachers of different ages

2020 ◽  
Vol 210 ◽  
pp. 18079
Author(s):  
Lyudmila Zheldochenko ◽  
Oksana Nikolenko
Keyword(s):  
Work Experience ◽  
Time Perspective ◽  
Statistical Processing ◽  
Teaching Experience ◽  
Professional Activity ◽  
Teachers Perceptions ◽  
Time Perspectives ◽  
Significant Relationships ◽  
Different Ages ◽  
The Individual

The article analyzes the problem of professionalization of the individual in pedagogical activity. The results of an empirical study of the ideas of teachers of different ages about the object of their professional activity are presented. It is shown that at each stage of professionalization, with an increase in the length of teaching experience, the assessment of the attitude to time changes, and through this – the assessment of the individual's attitude to the surrounding reality in General, as well as to himself, his experience and future prospects. Significant relationships between indicators of teachers ' perceptions of the object of professional activity and indicators of the time perspective of teachers of different ages are shown. The study involved 148 College teachers. Work experience varies from 1 year to 40 years. Age limits from 20 to 63 years. To confirm the research hypothesis that there may be significant relationships between professional ideas and time perspectives among teachers of different ages, we used a set of methods, including: "Questionnaire aimed at the study of ideas about the object of activity (E. I. Rogova)," F. Zimbardo's time perspective Questionnaire (ZTPI)". Methods of mathematical and statistical processing, presentation of the obtained data: descriptive statistics, determination of the reliability of differences: according to the Kruskal-Wallace criterion. Empirically, it is established that there are significant relationships between the assessment of attitudes to time and ideas about the object of activity in teachers of different ages.

Liquid-chromatographic measurement of p-aminobenzoic acid and its metabolites in serum.

1988 ◽  
Vol 34 (11) ◽  
pp. 2235-2238 ◽  
Author(s):  
L L Yung-Jato ◽  
P R Durie ◽  
S J Soldin
Keyword(s):  
High Performance ◽  
Internal Standard ◽  
High Performance Liquid Chromatographic ◽  
Peak Height ◽  
Individual Compound ◽  
Aminobenzoic Acid ◽  
Serum Samples ◽  
The Individual ◽  
A Minor ◽  
Liquid Chromatographic

Abstract This is a high-performance liquid-chromatographic method for measuring p-aminobenzoic acid (PABA) and its metabolites in plasma or serum. Samples are deproteinized, then extracted with organic solvents before chromatography. For quantification, the peak height of the individual compound is compared with that of the internal standard. Analytical recoveries ranged from 41% to 100%, depending on the compound studied. Comparison of patients' samples after oral administration of either N-benzoyl-L-tyrosyl-p-aminobenzoic acid or free PABA revealed that PABA is extensively metabolized and conjugated to either p-acetamidobenzoic acid, p-aminohippuric acid, or p-acetamidohippuric acid. PABA concentrations in serum as measured with the Bratton-Marshall ultraviolet spectrophotometric procedure would appear predominantly to reflect measurements of metabolites, with only a minor contribution from PABA itself.

scholarly journals Thermal Performance Evaluation of Common Exterior Residential Wall Types in Egypt

Buildings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 95
Author(s):  
Khaled Tarabieh ◽  
Ahmed Aboulmagd
Keyword(s):  
Thermal Performance ◽  
Energy Efficient ◽  
State Of The Art ◽  
Experimental Testing ◽  
Simulated Data ◽  
Experimental Tests ◽  
Evaluation Procedure ◽  
Materials Used ◽  
The Individual ◽  
Composite Walls

The demand for energy-efficient housing is on the rise in Egypt. The information about the individual materials used in the construction of typical residential wall assemblies are known in the literature. However, data from lab tests to validate the performance for whole composite walls are limited. Three typical wall types were constructed and tested utilizing a standard experimental evaluation procedure based on thermal convection loads. A research framework combining the validated thermal performance data from the experimental test and the simulated data was developed. The experimental tests were performed utilizing a state-of-the-art guarded hotbox apparatus and following the guidelines of the ASTM C1363-11 standard. The solar radiation load was taken into account in the calculations according to the standard, and the error estimation and uncertainty analysis for the experimental tests are reported. The results of the experimental testing are described and a recommendation of the best wall type is noted. The output of this research will help to initiate a material database of the thermal performance of typical residential wall types used in Egypt that have been validated in the lab. This will be useful for the building industry as a whole to understand the performance of the materials in composite assemblies and their impact on energy efficiency.

scholarly journals Two functionally distinct 4-aminopyridine-sensitive outward K+ currents in rat atrial myocytes.

1992 ◽  
Vol 100 (6) ◽  
pp. 1041-1067 ◽  
Author(s):  
W A Boyle ◽  
J M Nerbonne
Keyword(s):  
Experimental Testing ◽  
Potential Range ◽  
Kinetic Properties ◽  
Atrial Myocytes ◽  
Adult Rat ◽  
Outward Currents ◽  
Recovery From Inactivation ◽  
Functional Inactivation ◽  
The Individual ◽  
K Currents

In the experiments here, the detailed kinetic properties of the Ca(2+)-independent, depolarization-activated outward currents (Iout) in enzymatically dispersed adult rat atrial myocytes were studied. Although there is only slight attenuation of peak Iout during brief (100 ms) voltage steps, substantial decay is evident during long (10 s) depolarizations. The analyses here reveal that current inactivation is best described by the sum of two exponential components, which we have termed IKf and IKs to denote the fast and slow components, respectively, of Iout decay. At all test potentials, IKf inactivates approximately 20-fold more rapidly than IKs. Neither the decay time constants nor the fraction of Iout remaining at the end of 10-s depolarizations varies over the potential range of 0 to +50 mV, indicating that the rates of inactivation and recovery from inactivation are voltage independent. IKf recovers from inactivation completely, independent of the recovery of IKs, and IKf recovers approximately 20 times faster than IKs. The pharmacological properties of IKf and IKs are similar: both components are sensitive to 4-aminopyridine (1-5 mM) and both are relatively resistant to externally applied tetraethylammonium (50 mM). Taken together, these findings suggest that IKf and IKs correspond to two functionally distinct K+ currents with similar voltage-dependent properties and pharmacologic sensitivities, but with markedly different rates of inactivation and recovery from inactivation. From the experimental data, several gating models were developed in which voltage-independent inactivation is coupled either to channel opening or to the activation of the individual channel subunits. Experimental testing of predictions of these models suggests that voltage-independent inactivation is coupled to activation, and that inactivation of only a single subunit is required to result in functional inactivation of the channels. This model closely approximates the properties of IKf and IKs, as well as the composite outward currents, measured in adult rat atrial myocytes.

scholarly journals Empirical Study of Organizational Culture Development of the Pedagogical Staff of the Vocational Educational Institution

2020 ◽  
pp. 214-231
Author(s):  
Tetiana Petrivna Polishchuk
Keyword(s):  
Organizational Culture ◽  
Interpersonal Relationships ◽  
Experimental Testing ◽  
Educational Institution ◽  
Teaching Staff ◽  
Positive Trend ◽  
Innovative Methods ◽  
The Status ◽  
The Individual ◽  
Culture Development

The aim of the article is to prove the organization and experimental testing results of the effectiveness of innovative methods of organizational culture development among the teaching staff of the vocational (vocational and technical) educational institution (V(VT)EI) of agricultural profile. The author characterises the interaction of the individual with society, the internal interaction of teachers, the interaction between managers and subordinates, resulting in the formation and development of teaching staff’s organizational culture. The analysis of the facts obtained in the course of the research ascertaining stage regarding the status of organizational culture of V(VT)EI, that is, participants of the experiment, is under focus. The level of teaching staff’s awareness of the mission, strategy, objectives, values, features of organizational culture of this category is clarified and described. The values that are formed by the professional experience and meet the interests of teachers are under emphasis. The specificities of the priority values of pedagogical collectives are revealed and their correlation with the values of the Ukrainian society, as well as with the European values, are clarified. The main result of this study is a positive trend in the organizational culture development among the teaching staff of vocational (vocational and technical) educational institution of agricultural profile by all parameters demonstrated by a comparative analysis of the data obtained before the experiment and after the introduction of innovative methods. A clear example of this is the increase in the efficiency of the experimental V(VT)EI of the agricultural profile in areas such as the development of teachers' ability to carry out socially significant activities and to realize the intellectual potential, stability and unity of interpersonal relationships and interactions, which ensures the stability of the team, the coherence of intra-group interests. Conclusions: 1. Based on values, organizational culture of the teaching staff promotes the interaction of the individual with society, pedagogical interaction between team members, between managers and subordinates, resulting in the formation and development of organizational culture of the teaching staff V(VT)EI of the agricultural profile. 2. The methods and technics developed and used in the course of the pedagogical experiment to study the status of organizational culture awareness by teachers can contribute to solution of managerial problems by the heads of the V(VT)EI.

scholarly journals Splenic Mass and its Relation to Age Sex and Height of the Individual in Bangladeshi Peoples

1970 ◽  
Vol 3 ◽  
pp. 71-78
Author(s):  
Mohsin Khalil ◽  
Md Ashraful Islam Chowdhury ◽  
Habibur Rahman ◽  
Sabina Mannan ◽  
Seheli Zannat Sultana ◽  
...  
Keyword(s):  
Body Height ◽  
Spleen Weight ◽  
Global Studies ◽  
Age Group ◽  
Cross Sectional ◽  
Medical College ◽  
Normal Spleen ◽  
Human Cadavers ◽  
The Mean ◽  
The Individual

The aim of this study was to establish the standard weight of the normal spleen in Bangladeshi people. One hundred and twenty human cadavers of which eighty seven male and thirty three female were dissected to remove spleen with associated structures. Collected specimens were tagged with specific identification number, and divided into five groups according to age, sex and height of the individual. Gross and fine dissections were carried out after fixing the specimen in 10% formal saline solution. Weight of the spleen was measured by analytical balance and expressed in gram and findings of the study were compared with the findings of national and global studies. This cross sectional descriptive study was carried out in the Department of Anatomy of Mymensingh Medical College, Mymensingh. In this study maximum mean weight of spleen was 86.35 gram in male and 85.33 gram in female in 31 - 45 years age group. Minimum mean weight of spleen was 47.37 gram in male and 38.83 gram in female up to 15 years age group. The weight of spleen increases with age of the individual. Mean weight of spleen in male was 73.43 gram, which was higher than the mean weight of female spleen (59.17 gram). According to height of individual the mean weight of spleen was maximum 84.32 gram in 165.01 to 180 cm height group and minimum in 54.87 gram in up to 120 cm height group which indicate that weight of the spleen increases with height of the individual. In conclusion, the weight of the spleen depends on the age, sex and body height of the individual. Key Words: Spleen, Weight, Age, Height     doi: 10.3329/jbsp.v3i0.1802 J Bangladesh Soc Physiol.2008 Dec;(3):71-78.

scholarly journals Body proportions of 6–18-year-old children in Merida, Mexico

2019 ◽  
Vol 82 (3) ◽  
pp. 273-285
Author(s):  
Anna Siniarska ◽  
Joanna Nieczuja-Dwojacka ◽  
Sławomir Kozieł ◽  
Napoleon Wolański
Keyword(s):  
Ethnic Groups ◽  
Lower Limb ◽  
Body Height ◽  
Postnatal Growth ◽  
The Body ◽  
Body Proportions ◽  
Leg Length ◽  
Effect Factor ◽  
Main Effect ◽  
The Individual

Abstract The purpose of this study was to find out the differences in body physique and its proportions between children from Creole, Maya and Mestizo ethnic groups living in Merida, Mexico. The study was conducted between 1996–1999 and comprised of 4636 children and youth aged 6–18 years from three ethnic groups: Maya, Mestizo, and Creole. There were 1362 boys and 1314 girls from Creole group and 803 boys and 857 girls from the pooled Maya/Mestizo group. Anthropometric measurements included body height, arm and leg length, shoulder and hip width. The following indexes were calculated: leg length-to-body height, upper-to-lower limb, shoulder-to-body height, hip-to-body height, and hip-to-shoulder. Two-way analysis of variance (two-way ANOVA) was used to test the main effect and the interaction effects of age and ethnicity on height, leg length and body proportions, separately for boys and girls. All statistical analyses were performed using Statistica software version 13.1. All p-values lower than 0.05 were considered significant. Results of this study revealed that average values of body height, leg length and upper-to-lower limb and shoulder width proportions were statistically significantly different between ethnic groups. Creole children were taller and longer-legged than their Maya/Mestizo peers, and the greatest difference was noted after puberty. Maya/Mestizo children had relatively longer arm as compared to Creoles. Results of two-way ANOVA revealed that age and ethnicity were combined (interaction effect) factors for variation in body height both in boys and girls, and upper-to-lower limb proportion in boys, shoulder-to-body height proportion in girls. Ethnicity was the main effect factor for leg length both in boys and girls, and for the body proportions: upper-to-lower limb in girls and shoulder-to-body height in boys. Age was the main effect factor for upper-to-lower limb proportion in girls, shoulder-to-body height in boys, hip-to-body height in boys and girls, and hip-to-shoulder, both in boys and girls. In conclusion it may be stated that variation in body physique and body proportions during the postnatal growth in different ethnic groups is under the influence of complex interaction between genetic and environmental factors to which the individual is exposed.

scholarly journals Auditing and controlling as a tool for sme marketing risk management

2021 ◽  
pp. 225-235
Author(s):  
Vaclav Kupec ◽  
Premysl Písar
Keyword(s):  
Risk Management ◽  
Corporate Culture ◽  
Experimental Testing ◽  
The European Union ◽  
Term Stability ◽  
Long Term Stability ◽  
Business Environments ◽  
Marketing Risk ◽  
The Individual

The current hyper-competitive environment, rapid marketing tools, and modern techniques provide many opportunities for small and medium-sized businesses. Such opportunities could bring much in the way of rewards both for the individual companies and the wider economy. However, there are many threats associated with these business environments which cannot be overlooked. Small and medium-sized businesses are a significant stabilizing economic power within the European Union. Therefore, it is not surprising that small and medium-sized businesses competitiveness and their long-term stability are vital factors for European cohesion and development. This research aims to analyze risk management within small and medium-sized businesses, identify critical risk factors, and develop risk management, which could be applied to small and medium-sized businesses. The authors analyzed risk management's consequences and explained the variables as follows: ROA, Auditing, Controlling Management, Marketing, and Corporate Culture. Based on the research findings, the goal was to increase their interaction effectiveness, focusing on small and medium-sized businesses long-term stability and competitiveness. For achieving these aims, the paper provides two research questions and designs three hypotheses. This research was conducted from 2017 to 2020 on sample n = 432 EU small and medium-sized businesses. The reached data were analyzed by statistical method and experimental «in practice» testing. Based on the result and its experimental testing, a marketing risk management model was designed, tested, and verified using practical methods. This model could be used for the identification and avoidance of potential risks when developing a marketing strategy. The findings reached should be used to advance research and similarly for practical use within the business sphere.

Sign in / Sign up

Export Citation Format

Share Document