scholarly journals Thermodynamic properties of 5-(2-nitrophenyl) furan-2-carbaldehyde and it’s derivatives in a condensed state

2020 ◽  
Vol 3 (2) ◽  
pp. 1-6
Author(s):  
I. B. Sobechko ◽  
◽  
Yu. I. Gorak ◽  
V. M. Dibrivnyi ◽  
L. V. Goshko ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Thermodynamic Properties ◽  
Condensed State ◽  
Calculation Methods ◽  
Combustion Calorimeter

Using the precision bomb combustion calorimeter B-08-MA, the combustion energies of 5- (2- nitrophenyl) -furan-2-carbaldehyde, 5- (2-nitro-4-methylphenyl) -furan-2-carbaldehyde and 5- ( 2-nitro-4- oxymethylphenyl) -furan-2-carbaldehyde. Based on the obtained data, the values of enthalpies of combustion and formation of substances in the condensed state are calculated. A comparative analysis of experimentally determined values with theoretically calculated values by additive calculation methods is given.

COMPARATIVE ANALYSIS OF EQUILIBRIUM BEACH PROFILE CALCULATION METHODS

2015 ◽  
pp. 39
Author(s):  
A. L. Khomchanovsky ◽  
E. A. Fedorova ◽  
An. A. Lygin ◽  
A. Sh. Khabidov
Keyword(s):  
Comparative Analysis ◽  
Calculation Methods ◽  
Beach Profile ◽  
Equilibrium Beach Profile

scholarly journals Determining efficiency of cycloid reducers using different calculation methods

2019 ◽  
Vol 290 ◽  
pp. 01008
Author(s):  
Milos Matejic ◽  
Mirko Blagojevic ◽  
Ileana Ioana Cofaru ◽  
Nenad Kostic ◽  
Nenad Petrovic ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Analytical Methods ◽  
Common Property ◽  
Experimental Results ◽  
Calculation Methods ◽  
Wide Range ◽  
Pros And Cons ◽  
Gear Trains ◽  
Central Gear ◽  
The Way

Cycloid reducers are gear trains which can be classified as planetary transmissions. These transmissions have a very wide range of uses in industry in transporters, robots, satellites, etc. This research presents a comparative analysis of three analytical methods for determining cycloid drive efficiency. The paper explores every mathematically formulated method and compares them to experimental results from literature. The presented methods for determining efficiency have a common property, in that they all determine losses due to friction on the bearing cam surface of the shaft, the rollers of the central gear and the output rollers. The calculation of efficiency values is done for standard power values. The methods differ primarily in the way they calculate losses. For each method of calculating efficiency there is an analysis of pros and cons. The paper concludes with suggestions as well as possible directions for further research.

A comparative analysis of the calculation methods of the heat emission during heating water with underheating

2014 ◽  
Vol 61 (3) ◽  
pp. 203-209
Author(s):  
O. E. Stepanov ◽  
V. E. Karnaukhov ◽  
A. M. Khudyakov ◽  
Yu. N. Eikhorn ◽  
A. V. Bulanov ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Heat Emission ◽  
Calculation Methods ◽  
Heating Water

Thermodynamic Properties of Vanadium in a Condensed State

2020 ◽  
Vol 58 (1) ◽  
pp. 44-49
Author(s):  
V. I. Lineva ◽  
M. A. Sineva ◽  
I. V. Morozov ◽  
G. V. Belov
Keyword(s):  
Thermodynamic Properties ◽  
Condensed State

Thermodynamic Properties of 1-Butyl-3-methylimidazolium Hexafluorophosphate in the Condensed State

2004 ◽  
Vol 49 (3) ◽  
pp. 453-461 ◽  
Author(s):  
Gennady J. Kabo ◽  
Andrey V. Blokhin ◽  
Yauheni U. Paulechka ◽  
Andrey G. Kabo ◽  
Marina P. Shymanovich ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Condensed State

Study on Improving the Empirical Formula of Calculating Francis Turbine’s Axial Hydro-Thrust

2015 ◽  
Vol 733 ◽  
pp. 619-622
Author(s):  
Xi Zhao ◽  
Li Zhu
Keyword(s):  
Comparative Analysis ◽  
Working Conditions ◽  
Empirical Formula ◽  
Hydropower Station ◽  
Calculation Methods ◽  
Operational Parameters ◽  
Flow Head

This paper improved the empirical formula so that it can calculate the axial hydro-thrust under different working conditions. Then based on the operational parameters of a hydropower station, two calculation methods were used to calculate axial hydro-thrust and made comparative analysis. The results show that the improved formula is simple in computation and closely combined with parameters like flow, head and speed, and its calculation accuracy satisfies the engineering demand.

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