We define a new type of spectrum, called δ-approximate spectrum, of an element a in a complex unital Banach algebra A and show that the δ-approximate spectrum σ_δ (a) of a is compact. The relation between the δ-approximate spectrum and the usual spectrum is investigated. Also an analogue of the classical Gleason-Kahane-Zelazko theorem is established: For each ε>0, there is δ>0 such that if ϕ is...

Photoremovable protecting groups are important for a wide range of applications in peptide chemistry. Using Fmoc-Cys(Bhc-MOM)-OH, peptides containing a Bhc-protected cysteine residue can be easily prepared. However, such protected thiols can undergo isomerization to a dead-end product (a 4-methylcoumarin-3-yl thioether) upon photolysis. To circumvent that photoisomerization problem, we explored...

This study examined the influence of a direct referral process implemented by a population-based provincial breast screening program on the time from screening to first procedure, first procedure to diagnosis, and screening to diagnosis following an abnormal breast screening result. The direct referral process shifted the responsibility for the coordination of diagnostic follow-up procedures fr...

The high state of black hole candidates is characterized by a quasi-thermal emission component at kT 1 keV. In addition, this state tends to have very low variability which indicates that it is relatively stable, at least on short time scales. Most models of the high state imply that the bulk of the emission comes from an optically thick accretion disc; therefore, this state may be an excellent...

A facile and useful method for preparing caged DNAs was developed. The method includes a caging reaction of a linear dsDNA having a minimal sequence of protein expression with Bio-Bhc-diazo and affinity separation of the caged DNA. Effective suppression and photo-mediated restoration of protein expression were demonstrated.

Background Extensive evidence suggests that adherence to brain-healthy behaviors can slow the rate of cognitive decline and decrease risk dementia. We previously demonstrated a health coaching intervention, including weekly phone calls, facilitated recommendations for in older adults with mild impairment (MCI) or The current study extends this research include cognitively normal, at dementia ad...