Experimental Study of Thermal Response of LPG Tanks Subjected to External Fire

2008 ◽  
Author(s):  
Zhi Xiang Xing ◽  
Xiao Fang Zhao
Keyword(s):  
Experimental Study ◽  
Experimental Research ◽  
Thermal Response ◽  
Polynomial Equation ◽  
Fire Exposure ◽  
Experimental Apparatus ◽  
Series Of Experiments ◽  
Fill Level ◽  
In Fire ◽  
Fire Type

The experimental research on thermal response of LPG tank exposed to fire is carried out. A experimental apparatus to simulate real accident of LPG tank is designed and manufactured. A series of experiments for different fill levels, different type of tanks subjected to different type of fires are performed with this apparatus. From the results of the experiments, the obvious stratification of temperature in the ladings of the tank is observed. And the pressure is increased due to the stratification. Thermal response of the LPG is affected by various factors such as fire type, tank type and fill level etc. The liquid could be superheated or sub-cooled in fire exposure situation. The pressure can be fitted to time by cube polynomial equation.

EXPERIMENTAL STUDY OF THE KINEMATIC PARAMETERS OF MOVEMENT OF CARS FORCED IDLE MOTION

2018 ◽  
pp. 52-57
Author(s):  
Ivelin Kostov
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Experimental Research ◽  
Kinematic Parameters ◽  
Research Results ◽  
Software Product

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.

EXPERIMENTAL STUDY OF REACTION OF ETHANOL WITH OXYGEN BEHIND SHOCK WAVES USING ATOMIC RESONANCE ABSORPTION SPECTROSCOPY METHOD

2020 ◽  
Author(s):  
N. S. Bystrov ◽  
◽  
A. V. Emelianov ◽  
A. V. Eremin ◽  
P. I. Yatsenko ◽  
...  
Keyword(s):  
Experimental Study ◽  
Shock Waves ◽  
Absorption Spectroscopy ◽  
Vacuum Ultraviolet ◽  
Resonance Absorption ◽  
Atomic Resonance ◽  
Quantitative Measurements ◽  
Series Of Experiments ◽  
Kinetics Of Reaction ◽  
Oxygen Atoms

The kinetics of reaction of C2H5OH with N2O behind shock waves is studied. The quantitative measurements of the time profiles of concentration of O atoms were carried out by the method of atomic resonance absorption spectroscopy (ARAS) using resonance vacuum-ultraviolet line of O-atom at 130.5 nm. For the calibration of absorption intensity of oxygen atoms depending on its concentration, the special series of experiments in the mixture containing different amounts of N2O in Ar was carried out at T = 2100 ± 50 K when molecule of N2O is completely dissociated. An experimental study of the appearance and consumption of oxygen atoms during the reaction of ethanol with oxygen in mixture 10 ppm N2O + (10 ... 0.1) ppm C2H5OH + Ar at temperatures of 16002300 K and pressures of 200-300 kPa have been carried out. A kinetic analysis of obtained data was performed using the Chemkin package.

Results of an experimental study of hydrogel drainage containing ranibizumab in antiglaucoma operations

2021 ◽  
pp. 63-67
Author(s):  
I.I. Khusnitdinov ◽  
Keyword(s):  
Experimental Study ◽  
Hyaluronic Acid ◽  
Key Words ◽  
Experimental Research ◽  
Experimental Studies ◽  
Glaucoma Surgery ◽  
Control Group ◽  
Morphological Studies

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.

Use of a Pendulum for Passive Structural Vibrations Control: An Experimental Study

1993 ◽  
Author(s):  
A. Ertas ◽  
O. Cuvalci
Keyword(s):  
Experimental Study ◽  
Dynamic Response ◽  
Passive Control ◽  
Control Device ◽  
Structural Vibrations ◽  
Pendulum System ◽  
Series Of Experiments ◽  
Tip Mass

Abstract The dynamic response of a beam-tip mass-pendulum system subjected to sinusoidal excitations is considered. The conditions under which resonant and nonresonant oscillations occur are investigated and discussed. The main objective of this study was to conduct a series of experiments to investigate the autoparametric interaction between the first two modes of the system. The use of a pendulum as a passive control device was experimentally evaluated.

Numerical Analysis of Fire Behavior of a Large Space Pre-Stressed Steel Structure under Fire

2011 ◽  
Vol 71-78 ◽  
pp. 3729-3732
Author(s):  
Ming Zhou ◽  
Zhi Guo Xie ◽  
Xin Tang Wang
Keyword(s):  
Numerical Analysis ◽  
Fire Behavior ◽  
Thermal Response ◽  
Structural Response ◽  
Steel Structure ◽  
Large Space ◽  
Fire Source ◽  
Lattice Shell ◽  
In Fire ◽  
Influence Degree

The computational model of numerical analysis of a suspended pre-stressed steel reticulated shell subjected to fire load is established with using the software Marc. Based on the model presented here, numerical analysis of thermal response and structural response of the pre-stressed steel structure are computed. The different space height and different rise-span ratio are considered for analysis of response temperature, displacements and stresses of the pre-stressed lattice shell under fire for one fire source. It is also shown that displacement of the node right above the inner cable is the maximum among the four nodes presented here as the fire source is located at the position right below the second-ring cable of the structure. It is concluded that the influence degree of space height of the structure on the fire response of the structure is not great, but rise-span ratio has obvious and great effect on displacements and stresses of the pre-stressed steel structure with large span in fire.

scholarly journals The Effect of Repeat Tax Amnesty and Tax Penalty Policy on Taxpayer Compliance (An Experimental Study)

2021 ◽  
Vol 8 (10) ◽  
pp. 105-116
Author(s):  
Ni Putu Riasning ◽  
Anak Agung Bagus Amlayasa ◽  
Luh Kade Datrini
Keyword(s):  
Experimental Study ◽  
Hypothesis Testing ◽  
Experimental Research ◽  
Research Output ◽  
Tax Compliance ◽  
University Research ◽  
Accounting Students ◽  
Repeated Application ◽  
Tax Amnesty ◽  
Compliance Decisions

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.

scholarly journals PENGGUNAAN METODE EKSPERIMEN PADA PEMBELAJARAN MATERI SIFAT BAHAN DAN KEGUNAANNYA TERHADAP HASIL DAN RESPON BELAJAR SISWA KELAS IV MIN TUNGKOB ACEH BESAR

2013 ◽  
Vol 13 (2) ◽  
Author(s):  
Wati Oviana ◽  
Maulidar Maulidar
Keyword(s):  
Experimental Study ◽  
Data Collection ◽  
Experimental Method ◽  
Learning Outcomes ◽  
Experimental Research ◽  
Experimental Methods ◽  
Learning Material ◽  
Primary School Students ◽  
School Students ◽  
Material Characteristics

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.

The Sucrose-Natural Gypsum Makes the Compound Retarder to the Cement and the Concretes Performance Influence Experimental Study

2011 ◽  
Vol 335-336 ◽  
pp. 1219-1222
Author(s):  
Ru Qin Wang
Keyword(s):  
Experimental Study ◽  
Physical Properties ◽  
Experimental Research ◽  
Mixing Time ◽  
The Other ◽  
Positive Correlation ◽  
Other Hand ◽  
Cement And Concrete

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.

The 4C/ID Model Applied to the Electrical Circuits Learning

2021 ◽  
pp. 128-149
Keyword(s):  
Experimental Study ◽  
Experimental Research ◽  
Mental Effort ◽  
Theoretical Framework ◽  
Instructional Efficiency ◽  
Electrical Circuits ◽  
Empirical Results ◽  
9Th Grade ◽  
And Control ◽  
Experimental Group

The main objective of this chapter is to present the empirical results of an experimental study carried out with 9th grade students for teaching electrical circuits. The experimental research took place during April and May 2013. In the study, the authors compared two instructional approaches (4C/ID versus conventional). Thus, the results obtained by two groups (experimental and control) on the variables ‘performance', ‘perceived mental effort', and ‘instructional efficiency' were compared. The results revealed that, globally, the experimental group obtained better performances, with less perceived mental effort (i.e., better instructional efficiency). These results were discussed in 4C/ID-model theoretical framework.

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