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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.
From the following, name the type of mimicry by which a palatable, acceptable insect mimics an unfavorable, noxious insec for protection. a) Batesian mimicry (pron: BATE-see-an
Casparian strip In plants, the impermeable waxy layer between the cells of endodermis which stops water and solutes from entering into the xylem, except by passing through the cyt
describe the phylums of invertebrates?
C h r on i c respiratory disease (CRD) Infection with Mycoplasma gallisepticum is characterized by slow onset; CRD is seen in chickens, turkeys, and other birds. Ducks f
It is a neural mechanism that plays a role in encoding of new information. Encoding takes place as a result of changes in the strength of synapses among neurons in neuronal network
Given a polymer backbone of H-C-C with the first carbon having 2 H atoms attached and the 2nd carbon with 3 atoms attached, a bond with a water molecule attaches to the left H atom
what is endosperm haustorium
Q. What are the three main parts into which a neuron can be divided? What are their respective functions? The three mains parts into which a neuron can be didactically divided
Guar Gum Guar Gum is derived from seed of legume Cyamopsis tetragonalobus resembling soyabean plant. Guar gum is composed of Galactomannan Galactose: mannose in the ratio 1:2.
Kinds of Succession - Ecology The ecological succession can be broadly classified into two kinds, on the basis of the nature of the habitat. Figure: Kinds of Success
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