KClO3 applications affect Phalaenopsis orchid flowering

Potassium chlorate (KClO3) treatments are known to promote flowering in longan plants. Potential effects of KClO3 on Phalaenopsis orchid flowering were investigated in the present study. However, increasing application concentrations of 2, 4, 8 and 16 mmol/L KClO3 delayed spike emergence by 5, 6, 18 and 26 days, respectively Moreover, they reduced final spike length by 2.1%, 4.0%, 16.2% and 46.1%, respectively. Nonetheless, application of KClO3 at 4 and 8 mmol/L advanced the time to appearance of the first open flower by 13 and 24 days, respectively. Use of 8 mmol/L KClO3 also increased the number of floral buds by 16%. Treatments with KClO3 tended to reduce flower size. Overall, the data suggest that application of KClO3 at an appropriate concentration (e.g. 8 mmol/L) can increase the number of floral buds and advance the time to Phalaenopsis orchid flowering, but may reduce flower size. (c) 2006 Elsevier B.V. All rights reserved.

Sequence variation can affect the performance of minor groove binder TaqMan probes in viral diagnostic assays

A minor groove binder (MGB) TaqMan real-time PCR assay was developed for the detection of respiratory syncytial virus (RSV) in clinical specimens. Upon evaluation of the assay, notable differences were observed in the overall fluorescent response obtained from RSV positive specimens, with some linear amplification curves deviating only slightly from baseline fluorescence. Sequencing of the probes targets in these RSV strains revealed single base mismatches with the MGB TaqMan probe. overall, these results highlight the usefulness of MGB TaqMan probes for the detection of mismatches, but suggest that MGB Taqman probes have limitations for routine screening for uncharacterised viral strains. (C) 2005 Elsevier B.V. All rights reserved.

Disability's affect: Or, refugees, communication and community

Cultural theorists have given much attention recently to the notion of 'affect', yet such discussions have not seriously, if at all, raised the question of disability. However we would suggest that disability has very strong relationships with affect. In this paper we argue for the importance of rethinking affect and communication from the perspective of a critical, socio-political account of disability. To illustrate this, we look at affect and disability in two important cases of refugees in Australia.

A multilevel analysis of BIS sensitivity and negative affect during skill acquisition

This Study examined the muldlevel reladonships among negadve affect Behavioural Inhibidon System (BIS) Sensidvit)' and performance. It also invesdgated whether the reladonship among these variables changed across pracdce. Pardcipants performed muldple trials of a simulated air traffic control task, A single measure of BIS was taken before pracdce, while negadve affect and performance were measured at repeated intervals. As expected, negadve affect was detrimental to performance at both a between-person and withinperson level, BIS was also found to be detrimental to performance. Contrary' to expectadons, the reladonship between BIS and performance was not mediated by overall levels of negadve affect. As predicted, the effects of overall levels of negadve affect and BIS strengthened across pracdce as pardcipants gained task knowledge and skill. The findings of this study are interpreted using resource allocadon theor}' and the implicadons for skiU acquisidon discussed.

Affective priming - is it only affect that primes?

A target word is classified faster as pleasant or unpleasant if preceded by a prime that matches the target word’s valence. This affective priming phenomenon is currently popular as an implicit measure of stimulus valence. The present set of experiments investigated whether rated stimulus arousal will affect target classification as well. In three experiments, word targets were preceded by prime stimuli that differed in rated arousal and valence. The basic priming effect was replicated in all experiments, however, priming was largest after high arousal unpleasant and low arousal pleasant primes, and reduced after low arousal unpleasant and high arousal pleasant primes. This finding emerged for picture and word primes and does not reflect the effect of differences in stimulus complexity. The difference in the effectiveness of the primes was not affected by SOA and seemed to hold across a wide range (50-200 ms for words and 200-500 ms for pictures). The present results suggest that some failures to find affective priming may not reflect on prime valence, but on prime arousal. Moreover, it suggests that increases in stimulus arousal have differential effects for the processing of pleasant and unpleasant stimuli.