A new crystalline reagent for nitrate reductase tests was compared with standard liquid reagents on 437 strains of mycobacteria. The results for isolates of Mycobacterium avium complex, Mycobacterium kansasii, Mycobacterium gordonae, Mycobacterium scrofulaceum, Mycobacterium fortuitum, and Mycobacterium chelonei agreed 100% with the expected results. Of the 177 Mycobacterium tuberculosis isolat...

Non-tuberculous mycobacteria are one of the major causes of lymphadenitis in children and seldom of deep neck infections. We reported the case of an immunocompetent two-year-old girl with adenitis and retropharyngeal abscess caused by an atypical mycobacterium. She had a positive tuberculin skin test, whereas the Quantiferon TB Gold test was negative. The child underwent a complete nodal excisi...

In this paper, we consider a multi-server queuing system in which additional servers are allowed for a longer queue to reduce the customer’s balking and reneging behavior. The customers are assumed to arrive in Poisson fashion and their service- times follow exponential distribution. The number of servers in long run depends on the queue-length. We obtain equilibrium queue size distribution. Th...

The object of the investigation is to study reducible $M$-ideals in Banach spaces. It is shown that if the number of $M$-ideals in a Banach space $X$ is $n(<infty)$, then the number of reducible $M$-ideals does not exceed of $frac{(n-2)(n-3)}{2}$. Moreover, given a compact metric space $X$, we obtain a general form of a reducible $M$-ideal in the space $C(X)$ of continuous functions on $X$. The...

the greater the likelihood of establishing the correct diagnosis. Conversely, when employing invasive diagnostic procedures more often, the risk of complications also increases proportionately. Ultimately, the exact risk-benefit ratio is not known forthis diagnostic strategy. A study much larger and more comprehensive than either ours or that of Cazzadori et al is necessary to definitively answ...