[R] extracting names from matrix according to a condition

[ivan]

Dear Community,

I have a matrix with assigned colnames and rolnames as follows:

            A            B
NR    0.15      0,05
AL     0,05      0,05
.           .            .
.           .            .
.           .            .

I want to extract the names of the rows for which A>0,1 and B<0,1. In
the above example this would be observation NR only. Hence the output
should write for instance:

names:
NR

Is this possible? Thank you very much for your help.

Best Regards