Vishnu... Krishna...sridhara

OUSHADHEY CHINTHAYE VISHNUM - (while taking medicines)vishnu
BHOJANEY CHA JANARDHANAM - (while having food) janardhanan
SHAYANEY PADMANABHAM - (while sleeping or lying down)padmanabhan
VIVAHE CHA PRAJAPATHIM - (while getting married or engaged)prajapathi
YUDHE CHAKRADHARAM DEVAM (while fighting war) chakrapani
PRAVAASEY CHA TRIVIKRAMAM (while travelling abroad) trivikraman
NARAYANAM THANU THYAGEY (while dying) narayanan
SHRIDHARAM PRIYA SANGAMEY (while meeting friends) sridharan
DUSWAPNA SMAREY GOVINDAM (while seeing bad dreams) govindan
SANKATEY MADHU SUDHANAM (while sad and having problems)madhu sudhan
KANANEY NARASIMHEY (while in forest) narasimman
PAVAKEY JALA SHAYINAM (while in or near fire) jalashayi
JALA MADHYEY VARAAHANCHE (while in water) varahan
PARVATHEY RAGHU NANDANAM (while in mountains) sri raman
GAMANEY VAMANANCHAIVA (friends ..please help with exact meaning for gamanam) vamanan
SARVA KAARYESHU MADHAVAM (at all times) madhavan

this is from a book --it says
Those who chant these 16 names of lord vishnu gets rid of all his sins and reaches vishnu's feet after the soul leaves our body.