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DEET
DEET is available in the US in many formulations with concentrations of 5%-40% and 100%; higher concentrations present complete protection for a longer period of time, but the duration of effectiveness reaches a plateau at a 50% concentration. A long-acting DEET formulation, originally developed for the US Armed Forces (US Army Extended Duration Topical Insect and Arthropod Repellent, EDTIAR) is available in the US as Ultrathon (3M). Ultrathon contains 25% (in aerosol) or 33% (in cream) DEET in a polymer formulation, which prevents loss from the skin surface by absorption and evaporation. Studies have shown that it gives complete protection against mosquitoes for 6-12 hours.
What is the reason of post endodontic disease ? Either there is persistent or reintroduce intracanal microorganisms.. that means if I do improper instrumentation, improper clea
Auxins The history of discovery of auxin is a fascinating chapter in plant physiology. The hormone auxin was discovered first, through some elegant experiments by Charles Darw
The plasma membrane consists mainly of: 1. Phospholipids embedded in a protein bilayer 2. Proteins embedded in a phospholipid bilayer 3. Proteins embedded in a polymer of
Angiosperms are the flowering plants. They first appeared at least 110 million years ago from the unknown gymnosperm ancestor, these flowering plants have risen to dominance in th
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What is the significance of Spicules? Any needlelike structure. This term is very often thought of in conjunction with sponges and refers to needlelike structures produced by s
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Explain the term Intracellular Filaments? Intracellular Filaments : The cell contains fibrous proteins which serve to give the cell its shape and internal organization and fo
What is the importance of the glucose blood level for human health? The glucose blood level (glycemia) must be kept normal. If it is abnormally low there is not enough glucose
Define Heart Rate (HR) Method - aerobic capacity? An alternative method for determining aerobic capacity involves the measurement of heart rate. Heart rate is linearly associa
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