Biological spray

The B.t. drop stain sizes from the 1981 study were assessed in a similar manner as the chemical tank mixes. Results (Table X) differed, however, from the 1976 chemical applications. Sixty percent of the Dipel 4L drop stains were less than 42 pm in diameter and 42 percent of the Thuricide 16B drop stains were less than 31 pm in diameter. Differences between the chemical and biological spray drop size distribution, however, may be due to variation in spreading of the drop after it deposits on the needle. There was no statistical difference in percent distribution of the drop stain sizes between the two B.t. tank mixes or between the two chemical tank mixes. 

Include effective cultural and biological control practices that work in harmony with effective IRM programs. Adopt all non-chemical techniques known to control or suppress pest populations, including biological sprays such as Bt s, resistant varieties, within-field refuges (untreated areas) and crop rotation... 

Biomedical. Heart-valve parts are fabricated from pyrolytic carbon, which is compatible with living tissue. Such parts are produced by high temperature pyrolysis of gases such as methane. Other potential biomedical apphcations are dental implants and other prostheses where a seal between the implant and the living biological surface is essential. Plasma and arc-wire sprayed coatings are used on prosthetic devices, eg, hip implants, to achieve better bone/tissue attachments (see Prosthetic and BiOLffiDiCALdevices). 

Other elements of weather and outdoor exposure can interact with UV radiation to accelerate degradation in degradable types of plastics. They include humidity, salt spray, wind, industrial pollutants, and atmospheric impurities such as ozone, biological agents, and temperature. The wavelengths that have the most effect on plastics range from 290 to 400 nm (2,900 to 4,000 A). 

The availability of Compound 118 for wide scale experimentation in the field of agricultural, household, and public health uses makes necessary a method for determining minute amounts such as would be present in spray or dust residues on plants and in biological fluids and tissues. 

M Sacchetti, MM Van Oort. Spray-drying and supercritical fluid particle generation techniques. Inhalation Aerosols Physical and Biological Basis for Therapy 1996 337-384. 

Jeffrey Dean, et al., Defensive Spray of the Bombardier Beetle A Biological Pulse Jet. Science 248 (1990) 1219. 

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