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The kan package was originally implemented in 1997 using the GAP 3 language, to compute induced actions of categories, when the first author was studying for a Ph.D. in Bangor. This reduced version only provides functions for the computation of normal forms of representatives of double cosets of finitely presented groups. Bug reports, suggestions and comments are, of course, welcome. Please con...

Mutagenesis of Nitrosomonas europaea was achieved by electroporation and recombination. To demonstrate this, an aminoglycoside 3'-phosphotransferase (kan) gene was specifically inserted into each of the three gene copies of hao individually. Southern hybridizations and PCR analysis showed the incorporation of the kan gene at the chosen genetic loci. The isolation of mutant strains was achieved ...

1. introduction nowadays, population increase, progress in science and technology and development of industrial installations with the shortage of places in metropolitan areas have made considerable changes in the morphology of watersheds. violation to territory of rivers, channels, and streams causes alterations in natural drainage pattern and overflowing due to the lower capacity of the chang...

DING WANG,∗†† XIANFENG ZHANG,∗ KEXIONG WANG,∗ ZHUO WEI,∗ BERND WÜRSIG,† GILLIAN T. BRAULIK,‡ AND SUSIE ELLIS§ ∗Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China †Texas A&M University, 4700 Avenue U, Building 303, Galveston, TX 77551, U.S.A. ‡Downstream Research Group, 3950 S. Fletcher Avenue, Amelia Island, FL 32034, U.S.A. §Conservation International, 1919 M Street, S...

In Australia, Ross River virus (RRV) is predominantly identified and managed through passive health surveillance. Here, the proactive use of environmental datasets to improve community-scale public health interventions in southeastern Tasmania is explored. Known environmental drivers (temperature, rainfall, tide) of the RRV vector Aedes camptorhynchus are analysed against cumulative case record...