  Temperature dependence of the in-plane electrical resistivity, $\rho_{\rm
ab}$, in various magnetic fields has been measured in the single-crystal
La$_{2-x}$Ba$_x$CuO$_4$ with $x=0.08$, 0.10, 0.11 and
La$_{1.6-x}$Nd$_{0.4}$Sr$_x$CuO$_4$ with $x=0.12$. It has been found that the
superconducting transition curve shows a so-called fan-shape broadening in
magnetic fields for $x=0.08$, while it shifts toward the low-temperature side
in parallel with increasing field for $x=0.11$ and 0.12 where the charge-spin
stripe order is formed at low temperatures. As for $x=0.10$, the broadening is
observed in low fields and it changes to the parallel shift in high fields
above 9 T. Moreover, the normal-state value of $\rho_{\rm ab}$ at low
temperatures markedly increases with increasing field up to 15 T. It is
possible that these pronounced features of $x=0.10$ are understood in terms of
the magnetic-field-induced stabilization of the stripe order suggested from the
neutron-scattering measurements in the La-214 system. The $\rho_{\rm ab}$ in
the normal state at low temperatures has been found to be proportional to
ln(1/$T$) for $x=0.10$, 0.11 and 0.12. The ln(1/$T$) dependence of $\rho_{\rm
ab}$ is robust even in the stripe-ordered state.
