scholarly journals Experimental study of the influence of a combination of operating parameters of a mobile lift on oscillatory processes occurring after locking the working platform

2021 ◽  
Vol 27 (2) ◽  
pp. 49-60
Author(s):  
Igor Kyrychenko ◽  
Oleksandr Reznikov ◽  
Dmytro Klets ◽  
Anton Kholodov

The article provides a detailed analysis of the influence of the combination of performance indicators of mobile lifts with working platforms (MLWP) at the stage of stopping and the process of vibration damping after stopping the working platform. On the basis of the results of experimental research and processing of the obtained data, an analysis was made of the influence of the angles of inclination of the upper and lower sections of the boom and the mass of the load in the working platform on the maximum amplitude of oscillations of accelerations when the working platform is locked, the period of oscillations and the time of their damping. As a result of the analysis, the spectrum of the response surfaces of the maximum amplitude of acceleration oscillations when the working platform is locked, the period of oscillations and the time of their damping from the working mass and the angles of inclination of the lower and upper boom sections was obtained, on the basis of which it can be concluded that the value of the maximum amplitude of acceleration oscillations in the locking time of the working platform is most influenced by the mass of the load in the working platform.

2021 ◽  
Author(s):  
Igor Kyrychenko ◽  
Oleksandr Reznikov ◽  
Dmytro Klets ◽  
Anton Kholodov ◽  
Pavlo Yehorov ◽  
...  

The article provides an analysis of the results of an experimental study of oscillatory processes occurring in mobile lifts with working platforms (MLWP) during the working operations. According to the developed research methodology, the results of measurements of acceleration along the horizontal and vertical axes of the machine at the point of articulation of the boom and at the point of attachment of the working platform to the boom were obtained and analysed. The analysis of the obtained oscillograms indicates that the greatest oscillations occur at the point of attachment of the working platform to the boom along the vertical axis. Accordingly, a detailed analysis of the influence of the operating parameters of the mobile lift on the oscillatory processes occurring during the operation of the machine at the point of attachment of the working platform to the boom along the vertical axis was carried out.


Author(s):  
Ivelin Kostov

In the work brought some experimental data of kinematic parameters of movement of cars forced idle, as the software product was used to diagnose 900 ATS, which recorded kinematic parameters of vehicle. On the basis of the conducted experimental research results are shown tabulated and analysed.


2021 ◽  
pp. 63-67
Author(s):  
I.I. Khusnitdinov ◽  

Purpose. Еxperimental substantiation of the effectiveness of biocompatible biodegradable hydrogels based on hyaluronic acid and chitosan succinate as a carrier of ranibizumab in antiglaucoma operations. Material and methods. Hydrogel drainage (HD) was obtained immediately before surgery. A solution of ranibizumab (0.23 ml) was mixed with a solution of hyaluronic acid dialdehyde (0.5 ml), then a solution of chitosan succinate (0.5 ml) was added. Experimental studies were performed in 12 (12 eyes) healthy rabbits. The first group consisted of 6 eyes – 0.187 ml of ranibizumab per 1 ml of gel. In the control group, HD was used intraoperatively without the addition of ranibizumab (6 eyes). Morphological studies were performed on 7th, 21st, and 42nd days. Results. In experimental studies in vitro and in vivo, it was proved that ranibizumab, administered as a part of 0.1 ml of hydrogel drainage in the antiglaucoma surgery area is released within 3 weeks and suppresses vascularization, scarring of the operating area, and preserves the intrascleral cavity. The optimal concentration of ranibizumab was selected-0.02 ml in 0.1 ml of gel. Conclusion. The safety and effectiveness of the use of hydrogel drainage with ranibizumab based on hyaluronic acid dialdehyde and chitosan succinate in anti-glaucoma operations has been proven. Key words: experimental research, hydrogel drainage, ranibizumab, glaucoma surgery.


2021 ◽  
Vol 8 (10) ◽  
pp. 105-116
Author(s):  
Ni Putu Riasning ◽  
Anak Agung Bagus Amlayasa ◽  
Luh Kade Datrini

This study aims to (1) examine the effect of repeated tax amnesty knowledge on taxpayer compliance, (2) examine the effect of tax sanctions on taxpayer compliance based on threats to taxpayer compliance decisions, and (3) examine differences in taxpayer compliance based on taxpayer knowledge, on the re-implementation of tax amnesty and the effect of tax sanctions on taxpayer compliance decisions. This study used a 2 x 2 factorial experimental research design between subjects by using 119 participants from accounting students from the Faculty Economic and Busines Warmadewa University. The results showed that both the knowledge of taxpayers on the re-implementation of tax amnesty and the effect of tax sanctions on taxpayer compliance decisions can affect taxpayer compliance. Besides that too, there is an interaction between taxpayer knowledge on the re-implementation of tax amnesty and the effect of tax sanctions on taxpayer compliance decisions where if the taxpayer is in a condition not aware of the repeated application of the tax amnesty, taxpayers who also receive high tax sanctions will show the highest degree of compliance, compared to subjects in other situations. Hypothesis testing using a different test t test with the help of the SPSS 26.0 program. The expected research output is that the results of this research will be published in the proceedings of the Warmadewa of University Research Institute. Keywords: Recurring tax forgiveness, tax sanctions, tax compliance.


2013 ◽  
Vol 13 (2) ◽  
Author(s):  
Wati Oviana ◽  
Maulidar Maulidar

The research on the use of experimental methods in learning characteristics of material and its usefulness toward students’ achievements and learning responses of Level 4 primary school students of MIN Tungkob Aceh Besar aims to determine students’ learning outcomes and responses toward the use of the method. This study uses experimental research. The data collection techniques were using test and distributing questionnaire to the students. The samples in this experimental study were students of class IV3 totaling 34 people as the experimental class and the class IV4 totaling 31 people as the control class. The data, which is the students’ learning outcomes collected from pretest and posttest, were analyzed using t-test formula. The data from the students’ questionnaire responses were analyzed using percentage formula.The result was that the students’ learning outcomes from the experimental class and the control class showed significant differences. Students’ responses toward the use of experimental methods in learning material characteristics and its usefulness were also very positive, where the students are very excited and interested in learning to use the experimental method in the study of material characteristics and its usefulness.


2011 ◽  
Vol 335-336 ◽  
pp. 1219-1222
Author(s):  
Ru Qin Wang

By the experimental research to the effect sucrose-natural gypsum as composite retarder on the performance of cement and concrete. This paper analyzes and summarizes the fact that the influence of this kind of composite retarder is more obvious than the slow setting effect of a single sugar or plaster. And the retardation of cement and concrete the mixing time is basically the amount of sugar a positive correlation. And on the other hand, it will not influence other physical properties.


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