Results 211 to 220 of about 6,799 (256)

Inert dust insecticides: Part II. The nature of effective dusts

Annals of Applied Biology, 1944
The conditions required in an inert dust for it to become an effective insecticide against grain weevils have been investigated. Particle size and intrinsic hardness are important, but not the only, factors. In the case of carborundum, particles larger than 15μ are without action, probably because they do not adhere to insects, and effectiveness ...
P. Alexander, J. A. Kitchener, H. V. A. Briscoe   +2 more
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Inerting of magnesium dust cloud with Ar, N2 and CO2

Journal of Hazardous Materials, 2009
Experiments were conducted on the inerting of magnesium dust with N(2), CO(2), and Ar. Comparing the maximum explosion pressure, maximum rate of pressure rise, and limiting oxygen concentration with different inertants, it was determined that Ar is not the best inert gas under all conditions as commonly believed.
G, Li, C M, Yuan, Y, Fu, Y P, Zhong, B Z, Chen   +4 more
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Flammability limits of dusts: Minimum inerting concentrations

Process Safety Progress, 1999
AbstractA new flammability limit parameter has been defined as the Minimum Inerting Concentration (MIC). This is the concentration of inertant required to prevent a dust explosion regardless of fuel concentration. Previous experimental work at Fike in a 1‐m3 spherical chamber has shown this flammability limit to exist for pulverized coal dust and ...
A. G. Dastidar, P. R. Amyotte, J. Going, K. Chatrathi   +3 more
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Haemolytic Activity of Suspensions of Different Silica Modifications and Inert Dusts

Nature, 1965
RECENTLY, Harley and Margolis1 reported haemolytic activity of amorphous silica particles of sizes larger than 5 mµ. In the course of an investigation on the possible role of complement (C′) in the cytotoxicity of quartz, our experiments revealed a specific haemolytic effect of buffered saline suspensions of this mineral.
K, Stalder, W, Stöber
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Inert dusts and their effects on the poultry red mite (Dermanyssus gallinae)

Experimental and Applied Acarology, 2009
The haematophagous poultry red mite (Dermanyssus gallinae) is the most important pest of egg laying hens in many parts of the world. Control has often relied on chemical pesticides, but inert dusts, which are thought to kill target hosts primarily by desiccation, have become one of the most commonly applied alternative control methods for poultry red ...
Kilpinen, Ole, Steenberg, Tove
openaire   +3 more sources

Inertization of pyrite cinders and co-inertization with electric arc furnace flue dusts by pyroconsolidation at solid state

Waste Management, 2002
The viability of a pyroconsolidation process to render pyrite cinders inert and to co-inert pyrite cinders with a hazardous polymetallic residue such as electric arc furnace flue dusts (EAF) containing Pb, Cu, Zn, As, Cr, Ni and Mo were investigated. The effects of pyroconsolidation temperature (800-1200 degrees C), milling pyrite cinders and additions
J, Viñals, M J, Balart, A, Roca
openaire   +2 more sources

Control of Insects in Post-Harvest: Inert Dusts and Mechanical Means

2001
Residual chemicals are currently used to control stored-product insects pests that are found in granaries and food-processing facilities. Long-term use of these chemicals has resulted in the development of insect populations that are resistant to the common insecticides (e.g.
Fields, P., Korunic, Z., Fleurat-Lessard, Francis   +2 more
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The quantitative studies on gas explosion suppression by an inert rock dust deposit

Journal of Hazardous Materials, 2018
The traditional defence against propagating gas explosions is the application of dry rock dust, but not much quantitative study on explosion suppression of rock dust has been made. Based on the theories of fluid dynamics and combustion, a simulated study on the propagation of premixed gas explosion suppressed by deposited inert rock dust layer is ...

exaly   +3 more sources

A flame inhibition theory by inert dust and spray

Combustion and Flame, 1981
An asymptotic analysis for the limit of large activation energy is presented to study the thermal inhibition effect on premixed flames by chemically inert dust or spray. A formulation analogous to heterogeneous laminar flame is employed to derive explicit relations of flame speeds and characteristics of dust and spray. The flame propagation velocity in
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On the problem of laminar flame propagation in a gas with an inert dust

Combustion, Explosion, and Shock Waves, 2011
This paper presents a mathematical model and the results of calculation of the velocity of propagation of the flame front in a fuel gas with suspended inert particles taking into account the thermal expansion of the gas and the dynamic relaxation of particles.
A. A. Dement’ev, A. Yu. Krainov
openaire   +1 more source