Two key quantities in our analysis are the fractions, ϕ0 and ϕ1, of public goods that are retained by its producer and the producer's immediate neighbors, respectively.
Smallpox, a lethal and highly contagious disease, was declared eradicated in 1980 by the World Health Organization, but small quantities of the smallpox virus were retained in depositories in the United States and the former Soviet Union.
Addition of unlabelled 3-methylcholanthrene to the initial incubation increased the radioactivity taken up and caused substantially larger quantities of the carcinogen to be retained after the medium had been changed.
A small quantity of Sardinops (∼500 individuals) was retained in the net and the process of tightly bunting the net (aggregating the fish at high densities) and rolling excess fish over the headline of the purse seine net was simulated; these fish were similarly transferred to an onboard tank.
The time of flight secondary ion mass spectrometry (TOF-SIMS) images show that in the treated soils, the signal intensity of Cu2 + is high, while that of Cd2 + is very low, indicating that Cu2 + is retained in larger quantities than Cd2 +, also demonstrating how intensively Cu2 + interacts with organic matter.
Gold was recalled in 1934, but gold coins of numismatic interest (see coin collecting) may be retained in any quantity by "collectors of rare and unusual coin" (Presidential Order 6260).
Nevertheless, if the acceptable quantity of mummy nuts that can be retained per tree is substantially higher than two, then the cost of mummy nut removal by growers is reduced even further.
I discuss this issue at some length in the second paragraph of the Discussion, but I have added the following new text to clarify the issue further: "Nevertheless, if the acceptable quantity of mummy nuts that can be retained per tree is substantially higher than two, then the cost of mummy nut removal by growers is reduced even further".
However, identical observation data is retained at every time step, and there will the same starting quantity of particles N for every filter.
