Addition of purines to the growth medium of Escherichia coli represses synthesis of cytosine deaminase (codA) and enzymes of purine de novo synthesis. After Tn10 mutagenesis, mutants displaying derepressed levels of cytosine deaminase in the presence of hypoxanthine were isolated. One of these had simultaneously acquired resistance to the hypoxanthine analog 6-mercaptopurine. The mutation purR6...

Phonological priming between spoken words was examined using CVCVC bisyllabic pseudoword primes and word or pseudoword targets. The influence of different types of overlap was compared, prime and target sharing the coda, the rime or the final syllable. The task was target shadowing. Two priming conditions were used, the auditory targets being preceded by auditory primes in unimodal and by visua...

Research shows that cross-dialect lexical recognition can be asymmetrical, favouring non-dominant dialect speakers and prejudicing dominant-dialect speakers [10]. We ask if non-dominant dialect speakers exhibit similar perceptual effects when exposed to modified L2 input that aligns with their particular L1 dialect. The dialect feature examined is Spanish coda [-s]-aspiration. Participants were...

The Coda Wave Interferometry (CWI) analysis serves to monitor the variation of propagation velocity in a heterogeneous medium with high precision (10−3% in relative terms). In combination with acoustoelastic theory, this type of analysis offers an NDT method for stress evaluation and/or damage detection. Since the CWI method is intended to evaluate extreme levels of accuracy, the presence of bi...

We investigate the contribution that lingual gesture delay makes to lenition of postvocalic /r/. This study uses a socially-stratified, audio-ultrasound corpus of Scottish English containing recordings from two sociolects; one with postvocalic /r/ weakening and the other with strengthening. We quantify auditory strength of rhoticity and the timing of the anterior lingual gesture relative to the...