Resonance Raman multicomponent spectra of the light-adapted form of bacteriorhodopsin, bRLA568, and its first photoproduct, K628, have been obtained at liquid nitrogen temperatures. The spectra of both bRLA568 and K628 could be obtained with the known sample compositions under our irradiating conditions and computer subtraction techniques. In agreement with previous results, we find that both b...

A 70-year-old man with a 3-month history of low back pain was admitted to our hospital due to difficulty in walking with pain and swelling in the right knee joint in September 2004. On admission, physical examination revealed a 15 cm mass with fever in the right knee joint. The superficial lymph nodes were not enlarged. The erythrocyte sedimentation rate and soluble interleukin 2 receptor level...

Detailed exuminution of the temperutLtre dependence of the n.m.r. spectra of 3,3-dimeth;,-lbut.,-lmagnesium chloride and bis(3,3-dimethvlbutyl)magnesium indicates that inversiott of configuration at the-CHzMg center oc' curs rapidly in ether solution at room temperature. Activation parameters for the inversiott reactiotts ure E,, : ]l t 2 kcal.f rnole, A : l}c'a = t'5 sec.-t, ond

A 33-year-old nulligravid Filipino woman was admitted to the gynaecology ward of Princess Margaret Hospital in April 2014, with lower abdominal pain and recurrent retention of urine. Her pregnancy test was positive. Per-vaginal examination revealed a 4-cm firm, fixed, and wide-based vaginal mass with smooth wall over the upper anterior vagina. Bedside transabdominal ultrasonography confirmed a ...

In a single-degree-of-freedom weakly nonlinear oscillator subjected to periodic external excitation, a small-amplitude excitation may produce a relatively large-amplitude response under primary resonance conditions. Jump and hysteresis phenomena that result from saddle-node bifurcations may occur in the steady-state response of the forced nonlinear oscillator. A simple mass-spring-damper vibrat...