Semi-automatic laboratory device for measuring equal volumes of a gas

Vacuum ◽  
1964 ◽  
Vol 14 (10) ◽  
pp. 414
Keyword(s):  
Laboratory Device ◽  
Automatic Laboratory

Transformation of an Aviation Turboshaft Engine Into a Experimental Jet Engine for Laboratory Testing Unstable Radial Compressor Work

2014 ◽  
Author(s):  
Marián Hocko ◽  
Jiri Polansky
Keyword(s):  
Gas Turbine ◽  
Experimental Testing ◽  
Thermodynamic Characteristics ◽  
Power Generator ◽  
Jet Engine ◽  
Radial Compressor ◽  
Laboratory Device ◽  
Research And Education ◽  
Turboshaft Engine ◽  
Electronic Elements

The article deals with the use of a small aviation turboshaft engine for laboratory purposes. This study describes its transformation into an experimental device for research and education. Various constructional, technological and controlling modifications and settings of the gas turbine test stand were carried out and tested on a stationary configuration. The stationary system can be used as a small backup power generator or as a drive unit for a compressor, pump, etc. New control systems, electronic elements and methods of measuring rotations, pressure and temperature are tested for educational and research purposes. The study includes a schematic description of modelling measurements and subsequent numerical evaluation of the thermodynamic characteristics of the cycle in an experimental gas turbine. The laboratory device presented here is, thanks to technological, material and thermodynamic research, suitable for educating and testing the knowledge of future aviation and mechanical engineers. The content of the article is a description of the use of transformed small turboshaft engine into small jet engine by means of experimental testing of unstable work of the radial compressor under laboratory conditions.

scholarly journals Researches on Rheological Characteristics of Dough of Wheat Flour and their Changes During Storage

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Gheorghe CONSTANTIN ◽  
Gheorghe VOICU ◽  
Carmen Otilia RUSĂNESCU ◽  
Elena Mădălina ŞTEFAN
Keyword(s):  
Absorption Capacity ◽  
Rheological Characteristics ◽  
Gluten Strength ◽  
Structure Changes ◽  
Degree Of Stability ◽  
Laboratory Device ◽  
Brabender Farinograph ◽  
Changes Over Time ◽  
Dough Development Time

In this paper, rheological characteristics of flour are determined with Brabender farinograph. Brabender Farinograph is the most widely used laboratory device to evaluate the quality of flour, in batter, with which the rheological characteristics of flour is determined by measuring and recording gluten strength and endurance. With farinograph records the dough structure changes over time and obtaining data about: Absorption of flour, flour power (its ability to form a dough with rheological properties appropriate to flow operations technology), forming time of the dough, the degree of stability and soaking, the consistency of dough during this time. Analyzing the data presented on farinograph curves, were extracted the values of the dough development time (min), stability (min), softening degree (FU), consistency (FU), the absorption capacity of flour (%) farinograph index of the dough ..

The influence of biodegradability of sewer solids for the management of CSOs

2005 ◽  
Vol 51 (2) ◽  
pp. 89-97 ◽  
Author(s):  
R. Sakrabani ◽  
R.M. Ashley ◽  
J. Vollertsen
Keyword(s):  
Weather Conditions ◽  
Bulk Water ◽  
Combined Sewer Overflows ◽  
Sediment Erosion ◽  
Combined Sewer ◽  
Utilisation Rate ◽  
Laboratory Device ◽  
Receiving Waters ◽  
Oxygen Utilisation ◽  
Wet Weather

The re-suspension of sediments in combined sewers and the associated pollutants into the bulk water during wet weather flows can cause pollutants to be carried further downstream to receiving waters or discharged via Combined Sewer Overflows (CSO). A typical pollutograph shows the trend of released bulk pollutants with time but does not consider information on the biodegradability of these pollutants. A new prediction methodology based on Oxygen Utilisation Rate (respirometric method) and Erosionmeter (laboratory device replicating in-sewer erosion) experiments is proposed which is able to predict the trends in biodegradability during in-sewer sediment erosion in wet weather conditions. The proposed new prediction methodology is also based on COD fractionation techniques.

scholarly journals Synthesis and design of laboratory device from proton conducting block copolymer membrane

BIBECHANA ◽  
2012 ◽  
Vol 9 ◽  
pp. 50-58
Author(s):  
Shankar P Khatiwada ◽  
Amar P Yadav ◽  
Werner Lebek ◽  
Jean Marc Saiter ◽  
Rameshwar Adhikari
Keyword(s):  
Electron Microscopy ◽  
Atomic Force Microscopy ◽  
Fourier Transform ◽  
Block Copolymer ◽  
Triblock Copolymer ◽  
Proton Conductance ◽  
Proton Conducting ◽  
Force Microscopy ◽  
Atomic Force ◽  
Laboratory Device

The butadiene units of polystyrene-block-polybutadiene-block-polystyrene (SBS) triblock copolymer were subjected to epoxidation and subsequent sulphonation in order to prepare proton conducting ionomer membrane. The products were characterized by different techniques such as atomic force microscopy, Fourier transform infrared (FTIR) spectroscopy and electron microscopy. A simple laboratory device was developed to carry out the tests on proton conductance ability of the prepared ionomer membrane. The experiments demonstrated that the prepared membrane excellently performed as proton conducting membrane. DOI: http://dx.doi.org/10.3126/bibechana.v9i0.7174 BIBECHANA 9 (2013) 50-58

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