Comparative tests for chamotte production by screening and pneumatic classification

Refractories ◽  
1971 ◽  
Vol 12 (5-6) ◽  
pp. 298-299
Author(s):  
V. I. Goncharov ◽  
T. P. Kirichenko
Keyword(s):  
Comparative Tests ◽  
Pneumatic Classification ◽  
Chamotte Production

COMPARATIVE TESTS OF VARIOUS SOURCES OF MICROELEMENTS IN FEEDING CHICKEN-BROILERS

2018 ◽  
Vol 53 (2) ◽  
pp. 393-403
Author(s):  
Е.А. Sizova ◽  
◽  
S.А. Miroshnikov ◽  
S.V. Lebedev ◽  
Yu.I. Levakhin ◽  
...  
Keyword(s):  
Comparative Tests

A Most Probable Number Method for the Enumeration of Legionella Bacteria in Water

1991 ◽  
Vol 24 (2) ◽  
pp. 143-147 ◽  
Author(s):  
N. A. Grabow ◽  
R. Kfir ◽  
W. O. K. Grabow
Keyword(s):  
Water Samples ◽  
Membrane Filtration ◽  
Quantitative Method ◽  
Fluorescent Antibody ◽  
Most Probable Number ◽  
Probable Number ◽  
Comparative Tests ◽  
Antibody Staining ◽  
Direct Fluorescent Antibody ◽  
Yeast Extract Agar

A new quantitative method for the enumeration of Legionella bacteria in water is described. Appropriate tenfold serial dilutions of water samples concentrated by membrane filtration are plated in triplicate on buffered charcoal yeast extract agar. After incubation for 3 days representative smears from individual plates are tested for the presence of Legionella by direct fluorescent antibody staining. The number of positive plates in each dilution is used to calculate the Legionella count by means of conventional most probable number statistics. In comparative tests on a variety of water samples this method yielded significantly higher counts than previously used procedures.

Methods for determining the settling velocity profiles of solids in storm sewage

1996 ◽  
Vol 33 (9) ◽  
pp. 117-125 ◽  
Author(s):  
Emmanuelle Aiguier ◽  
Ghassan Chebbo ◽  
Jean-Luc Bertrand-Krajewski ◽  
Peter Hedges ◽  
Naomi Tyack
Keyword(s):  
Suspended Solids ◽  
Settling Velocity ◽  
Test Procedure ◽  
Velocity Profiles ◽  
Test Methods ◽  
Efficient Treatment ◽  
Experimental Procedure ◽  
Comparative Tests ◽  
Settling Process ◽  
Settling Characteristics

Recently, research has shown that a settling process is an efficient treatment for the removal of suspended solids from storm sewage. In order to design settling tanks, there is a need to determine the settling velocity characteristics of these solids. Devices and test methods for measuring settling velocities of solids in storm sewage have been developed by researchers. A literature review has revealed that the settling velocity profiles obtained with some methods (Chebbo, 1992), (Michelbach and Wohrle, 1993) and (Tyack et al., 1993) are very different. In order to explain why the results are different and to quantify the influence of the experimental procedure on the settling velocity grading curves, we have compared the selected methods when tested with the same sample and we have studied the effects of the conservation of the sample before the test, of the concentration of solids in the device and of the nature of the water on the settling velocity profiles. The results of the comparative tests indicate that the settling velocities are significantly lower with both the Cergrene and Aston methods than with the UFT test procedure. Moreover, the study has shown that the settling characteristics of solids change with time, that the use of sewage liquor rather than demineralised water or drinking water can change the results of the measurement and that the higher the concentration of solids, the greater the velocity of settled particles.

scholarly journals Comparative tests of seismic sources and geophones aiming at shallow reflection seismic investigation in urban areas

2006 ◽  
Vol 24 (1) ◽  
pp. 81-89
Author(s):  
Oleg Bhokonok ◽  
Renato Luiz Prado ◽  
Liliana Alcazar Diogo
Keyword(s):  
Urban Areas ◽  
Seismic Sources ◽  
Comparative Tests ◽  
Reflection Seismic ◽  
Seismic Investigation

scholarly journals Comparative tests of the metal cutting tools performance in the processing of stainless steels

2018 ◽  
Vol 441 ◽  
pp. 012052
Author(s):  
I V Shvetsov ◽  
B Ya Mokritskij ◽  
O A Malukhina ◽  
A H Rahmonov ◽  
V N Belyakov
Keyword(s):  
Stainless Steels ◽  
Metal Cutting ◽  
Cutting Tools ◽  
Comparative Tests

scholarly journals Does a plant-eating insect's diet govern the evolution of insecticide resistance? Comparative tests of the pre-adaptation hypothesis

2017 ◽  
Vol 11 (5) ◽  
pp. 739-747 ◽  
Author(s):  
Nate B. Hardy ◽  
Daniel A. Peterson ◽  
Laura Ross ◽  
Jay A. Rosenheim
Keyword(s):  
Insecticide Resistance ◽  
Comparative Tests ◽  
Adaptation Hypothesis

Comparative tests on sets of equipment for the load relief method with measurements of borehole wall deformation

1976 ◽  
Vol 12 (4) ◽  
pp. 421-427
Author(s):  
V. M. Barkovskii ◽  
P. Knoll ◽  
A. A. Kozyrev ◽  
M. V. Kurlenya
Keyword(s):  
Borehole Wall ◽  
Comparative Tests ◽  
Load Relief ◽  
Wall Deformation

Usefulness of segmental and comparative tests in the electrodiagnosis of carpal tunnel syndrome: the Italian multicenter study

1999 ◽  
Vol 20 (5) ◽  
pp. 315-320 ◽  
Author(s):  
L. Padua *, † , F. Giannini ◽  
P. Girlanda ◽  
A. Insola ◽  
R. Luchetti ◽  
M. Lo Monaco ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Multicenter Study ◽  
Comparative Tests ◽  
Tunnel Syndrome
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