austenitic stainless steels are extensively used in various applications requiring good corrosion resistance and formability. in the current study, the formation of nano/ ultrafine grained austenitic microstructure in a microalloyed aisi 304l stainless steel was investigated by the advanced thermomechanical process of reversion of strain-induced martensite. for this purpose, samples were subjec...

In this paper we describe a reversion assay specific for the detection of -2 frameshift mutations occurring within short stretches of alternating GC sequences. We have compared a series of chemical carcinogens that all bind covalently to the C8 position of guanine residues for their potency in inducing revertants in this assay. Large variations in potency are found within the list of compounds ...

In a system described by Cairns and Foster, starvation of a particular leaky lac mutant (lacIZ33) in the presence of lactose appears to direct mutation in non-growing cells to sites that allow growth (adaptive mutation). This behaviour requires that the lac operon be located on an F' plasmid. This position effect was investigated by placing the mutant lac operon at many sites in the genome of S...

Ralstonia solanacearum is a plant pathogenic bacterium that undergoes a spontaneous phenotypic conversion (PC) from a wild-type pathogenic to a non-pathogenic form. PC is often associated with mutations in phcA, which is a key virulence regulatory gene. Until now, reversion to the wild-type pathogenic form has not been observed for PC variants and the biological significance of PC has been ques...

Previous studies have shown that a number of factors can affect the rate, extent, or reversibility of denaturation. These factors include the nature and concentration of salt present (l-4), the concentration of protein (3, 5), the pH (6), and the nature of the denaturing agent (2). The return of enzymic activity after its loss through a process leading to denaturation is generally regarded as e...

Pharmacognosy Research,2023,15,2,206-216.DOI:10.5530/pres.15.2.022Published:February 2023Type:Review ArticleAuthors:Medha Mohan Hegde, and K Lakshman Author(s) affiliations:Medha Hegde1,*, Lakshman2 1Department of Pharmacognosy, Nargund College Pharmacy, RGUHS, Bangalore, Karnataka, INDIA. 2Department Faculty Pharmaceutical Sciences, PES University, Abstract:Natural drug-based chemotherapeutic ...

This article examines social media reversion, when a user intentionally ceases using a social media site but then later resumes use of the site. We analyze a convenience sample of survey data from people who volunteered to stay off Facebook for 99 days but, in some cases, returned before that time. We conduct three separate analyses to triangulate on the phenomenon of reversion: simple quantita...

The high incidence of trauma, especially in elderly people anticoagulated with new oral anticoagulants (NOAs), has become a major challenge, particularly in critical situations with life-threatening bleeding. Under these circumstances, urgent NOA reversion becomes mandatory. Prothrombin complex has become a frequent indication in critical situations in which rapid reversal of anticoagulation is...