Serpentine cord formation in BACTEC 12B medium was evaluated as a rapid method for the presumptive identification of M. tuberculosis complex. Kinyoun acid-fast stained smears were prepared from 666 positive BACTEC 12B bottles and examined for the presence or absence of serpentine cording. Cord formation had a sensitivity, specificity, positive predictive value, and negative predictive value of ...

The serpentine minerals lizardite, polyhedral serpentine, chrysotile, antigorite and 15-sector 30-sector polygonal have been studied by micro-Raman spectroscopy, using selected samples, that had previously characterized. appropriate crystal orientations were determined optical microscopy of petrographic sections. Oriented spectra, obtained Nd-YAG green laser radiation (532 nm), deconvolved, ext...

Parkin is an E3 ubiquitin ligase, mutations in which are responsible for autosomal recessive juvenile parkinsonism. Recently, several structures of Parkin have been solved, revealing its serpentine shape and modes of auto-inhibition.

In post–civil rights America, the ascendance of “law-and-order” politics and “postracial” ideology have given rise to what we call the penology of racial innocence. The penology of racial innocence is a framework for assessing the role of race in penal policies and institutions, one that begins with the presumption that criminal justice is innocent of racial power until proven otherwise. Counte...

introduction: the effects of electromagnetic fields on biological organisms have been a controversial and also interesting debate over the past few decades, despite the wide range of investigations, many aspects of extremely low frequency electromagnetic fields (elf/emfs) effects including mechanism of their interaction with live organisms and also their possible biological applications still r...

serum level of zinc, copper, β-carotene, vitamin a, and concentrations of zn and cu in hoof of 97multiparous holstein dairy cows with different locomotion scores (lss) were evaluated. simultaneously, znand cu concentrations of close up, fresh and high yielding cattle rations were 77, 94, 75 and 31, 28, 22 ppm, respectively. based on lss, despite normal serum copper levels in all three groups, w...

Species with widespread distributions that grow in varied habitats may consist of ecotypes adapted to a particular habitat, or may exhibit cross-tolerance that enables them to exploit a variety of habitats. Populations of Arabidopsis lyrata ssp. lyrata (L.) O'Kane & Al-Shehbaz grow in a wide variety of edaphic settings including serpentine soil, limestone sand, and alluvial flood plains. While ...

Nymphs of Stenoscepa sp. feed on leaves of the Ni hyperaccumulator Berkheya coddii at serpentine sites in Mpumalanga Province, South Africa. These sites contain Ni hyperaccumulators, Ni accumulators, and plants with Ni concentrations in the normal range. We conducted studies to: (i) determine the whole-body metal concentration of nymphs (including those starved to empty their guts); (ii) compar...