The BRAHMS
experiment at RHIC has measured the rapidity distribution (0 < y < 3)
of charged pions, kaons and (anti-)protons in d+Au and pp collisions
at sqrt(s_NN)=200GeV. The transverse momentum spectra of K^+ and
K^- will be presented. The R_CP and R_dAu ratios are constructed
for identified particles and for three different centralities. The
rapidity dependence of the K/pi ratios in dAu for different centralities
will be compared to those in pp collisions. Special emphasis will
be on the chemical composition at forward rapidity. The K/pi ratios
will be correlated to the measured net-proton yields (stopping)
and pbar/p ratios which may shed light on the dependence of strangeness
production on the baryo-chemical potential.