منابع مشابه
Production of Ice Nucleation Deficient (Ice-) Mutants of the Epiphytic Strains of Erwinia herbicola
To mutate the Ice Nucleation Active (INA) gene in Erwinia herbicola strains, Tn-5 transposon carried by Psup2021 plasmid was used. This plasmid was transferred to the bacterial cells by electroporation. Electrotransformation was carried out for 2.5 ms at 1800 v and 1 mm distance between the electrodes. Polymerase chain reaction was used for determination of presence or loss of INA gene, using a...
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The Ice Rink Problem 1
Aerial search and rescue (or bombing) missions frequently have to locate a target within some prescribed area, running a search pattern that is constrained by the ight characteristics of the aircraft. The sweep is done in nearly straight lines at high speed, with the craft's sensors monitoring a narrow strip of ground underneath the craft; in between sweeps, the craft slows down for turns that ...
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ژورنال
عنوان ژورنال: Nature
سال: 1879
ISSN: 0028-0836,1476-4687
DOI: 10.1038/020151b0