Aart W. Kleyn ; přeložila Anna Hejlová. Přeloženo z Let´s talk about it, Europhysics News, květen/červen 2003. and Součástí diskuse je odpověď autora článku Vliv fyziky na společnost Etienne de Wolfa.
On the basis of literature and my calculations it was established that a chlorophyll (Chl) particle anchored with a phytol chain to the thylakoid membrane takes up about 1 nm2 of the surface area. At an irradiance of 287 W m-2 the leaves of cabbage seedlings become saturated with photosynthetically active radiation (PAR) thus reaching the maximum photosynthetic rate of 100 µg(C) m-2 s-1, that is 5 CO2 molecules per 1 nm2 per second, and the maximum power with which the Chl particle supplies the process of photosynthesis is 15 aJ.
The systematic status of the gonad-infecting Philometra species previously reported as P. lateolabracis (Yamaguti, 1935) from marine fishes in the Mediterranean region and off New Caledonia is evaluated with respect to the recent redescription of P. lateolabracis from the type host in Japan. Philometra jordanoi (López-Neyra, 1951) is revalidated to accommodate the nematodes from Epinephelus marginatus, whereas the philometrids from other European hosts (Mycteroperca rubra and Seriola dumerili), as well as those from the gonads of Epinephelus cyanopodus and E. fasciatus off New Caledonia, should be reported as Philometra sp. until new data are available. Also the philometrids reported as P. lateolabracis from Parupeneus indicus from off Somalia should be designated as Philometra sp. for the time being.