453 research outputs found
Identifying Consumer Perceptions of Fresh-market Blackberries
Blackberries are grown worldwide for commercial fresh markets, but there is limited information on consumer perceptions of this fruit. In this study, physiochemical and consumer sensory attributes of three Arkansas-grown fresh-market blackberry genotypes were evaluated and consumer perceptions of fresh-market blackberries were also investigated though an online survey. Two cultivars (Natchez and Ouachita) and one advanced selection (A-2418) were evaluated for compositional and nutraceutical analysis and consumer sensory analysis. Natchez had the highest berry weight, length, drupelets and pyrenes/berry, and pyrene weight/berry. Ouachita had the highest soluble solids content (11.9%), pH (3.18) and soluble solids/titratable acidity ratio (10.92). There were no significant differences between genotypes for titratable acidity, organic acids, sugars, and most of the nutraceuticals. In a sensory panel (n = 80) of these genotypes, consumers rated Natchez highest in overall impression, overall flavor, and sweetness, and Natchez was ranked as the most liked blackberry more often than Ouachita or A-2418 on a 9-point verbal hedonic liking scale and 5-point Just About Right scale. An online consumer survey (n = 879) was done to gain information on consumers’ opinions and habits relating to fresh-market blackberries. Results indicated the most important factors to influence blackberry purchases are the freshness of the berries, the type and size of package, the uniformity of berry color, and the price. Results also suggested consumers prefer larger sized blackberries and blackberries with an oblong shape. Identifying marketability attributes of fresh-market blackberries helps provide information to advance breeding efforts for fruit with commercial potential
Evaluating Consumer Sensory and Composition Attributes of Arkansas-Grown Fresh-Market Blackberries
Blackberries are grown worldwide for commercial fresh markets. Three Arkansas-grown fresh-market blackberry genotypes (‘Natchez’, ‘Ouachita’, and A-2418) were evaluated for consumer sensory and compositional attributes at the University of Arkansas Food Science Department, Fayetteville. The compositional attributes of the blackberries were within an acceptable range for commercial markets (soluble solids=8.20-11.90%, pH=2.79-3.18, titratable acidity=1.09-1.32%). In terms of soluble solids to titratable acidity ratio, ‘Ouachita’ (10.92) had the highest ratio, followed by ‘Natchez’ (8.93) and A-2418 (6.25). A consumer sensory panel (n=80) evaluated fresh-market blackberry attributes using a 9-point hedonic scale for overall impression, overall flavor, sweetness, and sourness and a 5-point Just-about-Right (JAR) scale for sweetness and sourness. The participants also ranked the blackberries in order of overall liking from most to least liked. For overall impression, overall flavor, and sweetness, ‘Natchez’ scored higher than ‘Ouachita’ and A-2418, but the panelists did not detect differences in sourness. In terms of JAR for sweetness, 64% of consumers scored ‘Natchez’ JAR, followed by ‘Ouachita’ (39%) and A-2418 (34%). Whereas, 42% percent found A-2418 “Too Sour”, followed by ‘Ouachita (33%) and ‘Natchez’ (25%). In terms of ranking the blackberries, ‘Natchez’ was the most liked blackberry followed by ‘Ouachita’ and A-2418. When looking only at blackberries ranked first, 53% of consumers ranked ‘Natchez’ as their most liked berry, compared to A-2418 (26%) and ‘Ouachita’ (21%). The results from this research suggested that fresh-market blackberries with medium-level sweetness to sourness ratios were preferred though more consumers than expected preferred the blackberries with the more extreme ratios
The Influence of Prenatal Yoga on Maternal Identity Formation
Introduction: •The social groups that one belongs to influence the creation of self-identity •Changes in self-identity that occur during pregnancy set the stage for how a woman is able to incorporate her child into her own self-identity •Prenatal yoga reduces stress and anxiety during pregnancy, leading to increased feelings of attachment to the baby •Limited research on prenatal yoga and maternal identity formation Research Aim: To examine how participating in a prenatal yoga class with other mothers-to-be may influence maternal identity formation
Silicon Nanowire Sensors Enable Diagnosis of Patients via Exhaled Breath
Two of the biggest challenges in medicine today are the need to detect diseases in a noninvasive manner and to differentiate between patients using a single diagnostic tool. The current study targets these two challenges by developing a molecularly modified silicon nanowire field effect transistor (SiNW FET) and showing its use in the detection and classification of many disease breathprints (lung cancer, gastric cancer, asthma, and chronic obstructive pulmonary disease). The fabricated SiNW FETs are characterized and optimized based on a training set that correlate their sensitivity and selectivity toward volatile organic compounds (VOCs) linked with the various disease breathprints. The best sensors obtained in the training set are then examined under real-world clinical conditions, using breath samples from 374 subjects. Analysis of the clinical samples show that the optimized SiNW FETs can detect and discriminate between almost all binary comparisons of the diseases under examination with >80% accuracy. Overall, this approach has the potential to support detection of many diseases in a direct harmless way, which can reassure patients and prevent numerous unpleasant investigations
Measuring self-efficacy to deal with infertility: Psychometric properties and confirmatory factor analysis of the Portuguese version of the infertility self-efficacy scale
This study explores the psychometric properties and factor structure of the Portuguese version of the Infertility Self-Efficacy Scale (ISE-P), using translation and back-translation of the original version; principal component analysis; confirmatory factor analysis (CFA); and internal consistency, and test-retest reliability analyses. A total of 287 participants (156 women and 131 men) seeking medical treatment were recruited from public and private fertility centers. CFA revealed that the single-component model fit the data well. The instrument showed excellent internal consistency, good test-retest reliability, and correlations with other mental health measures suggesting good convergent and discriminant validity. In conclusion, The ISE-P is a valid and reliable Portuguese-language measure of perceived self-efficacy to cope with infertility
Levetiracetam in spinal cord injury pain: a randomized controlled trial
Udgivelsesdato: 2009-Jun-9Study design:A randomized, double-blind, placebo-controlled, crossover, multicenter trial. A 1-week baseline period was followed by two treatment periods of 5 weeks duration with levetiracetam increased from 500 mg b.i.d. to a maximum of 1500 mg b.i.d. separated by a 1-week washout period.Objectives:The objective of the study was primarily to evaluate the efficacy of the anticonvulsant levetiracetam in patients with spinal cord injury (SCI) at- and below-level pain and secondarily to evaluate the effect on spasm severity.Setting:Outpatients at two spinal cord units and a pain center.Methods:Patients were allowed to continue their usual pain treatment at a constant dose. The primary outcome measure was the change in median daily pain score (on a 0-10 point numeric rating scale) from 1-week baseline period to the last week of each treatment period. Secondary outcome measures included pain relief of at- and below-level pain, allodynia, spasms and spasticity.Results:A total of 36 patients with SCI at- and or below-level pain were enrolled. Of these, 24 patients completed the trial. We found no effect of levetiracetam on the primary (P=0.46) or any of the secondary outcome measures. Only two patients continued levetiracetam treatment following the trial, and one patient was still in levetiracetam treatment at the 6-month follow-up. Levetiracetam was generally well tolerated with no serious adverse events.Conclusions:Levetiracetam does not relieve neuropathic pain or spasm severity following spinal cord injury.Spinal Cord advance online publication, 9 June 2009; doi:10.1038/sc.2009.55
Must analysis of meaning follow analysis of form? A time course analysis
Many models of word recognition assume that processing proceeds sequentially from analysis of form to analysis of meaning. In the context of morphological processing, this implies that morphemes are processed as units of form prior to any influence of their meanings. Some interpret the apparent absence of differences in recognition latencies to targets (SNEAK) in form and semantically similar (sneaky-SNEAK) and in form similar and semantically dissimilar (sneaker-SNEAK) prime contexts at a stimulus onset asynchrony (SOA) of 48 ms as consistent with this claim. To determine the time course over which degree of semantic similarity between morphologically structured primes and their targets influences recognition in the forward masked priming variant of the lexical decision paradigm, we compared facilitation for the same targets after semantically similar and dissimilar primes across a range of SOAs (34–100 ms). The effect of shared semantics on recognition latency increased linearly with SOA when long SOAs were intermixed (Experiments 1A and 1B) and latencies were significantly faster after semantically similar than dissimilar primes at homogeneous SOAs of 48 ms (Experiment 2) and 34 ms (Experiment 3). Results limit the scope of form-then-semantics models of recognition and demonstrate that semantics influences even the very early stages of recognition. Finally, once general performance across trials has been accounted for, we fail to provide evidence for individual differences in morphological processing that can be linked to measures of reading proficiency
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Validation of a social cohesion theoretical framework: a multiple group SEM strategy
Social cohesion dates back to the end of the nineteenth century. Back then, society experienced epochal transformations, as are also happening nowadays. Whenever there are epochal changes, a social order (cohesion) matter arises. The paper provides a conceptual scheme of social cohesion identifying its constituent dimensions subdivided by three spheres (macro, meso, micro) and two perspectives (objective and subjective). The overarching aim is to test the validity of the operationalization of the social cohesion model provided. Firstly, we conducted an exploratory factor analysis introducing an approach implemented in Mplus named exploratory structural equation modeling that shows several useful characteristics. Afterward, through a structural equation modeling approach, we performed several confirmatory factor analyses adopting a multiple group SEM strategy in order to cross-validate the social cohesion model
Discrimination in lexical decision.
In this study we present a novel set of discrimination-based indicators of language processing derived from Naive Discriminative Learning (ndl) theory. We compare the effectiveness of these new measures with classical lexical-distributional measures-in particular, frequency counts and form similarity measures-to predict lexical decision latencies when a complete morphological segmentation of masked primes is or is not possible. Data derive from a re-analysis of a large subset of decision latencies from the English Lexicon Project, as well as from the results of two new masked priming studies. Results demonstrate the superiority of discrimination-based predictors over lexical-distributional predictors alone, across both the simple and primed lexical decision tasks. Comparable priming after masked corner and cornea type primes, across two experiments, fails to support early obligatory segmentation into morphemes as predicted by the morpho-orthographic account of reading. Results fit well with ndl theory, which, in conformity with Word and Paradigm theory, rejects the morpheme as a relevant unit of analysis. Furthermore, results indicate that readers with greater spelling proficiency and larger vocabularies make better use of orthographic priors and handle lexical competition more efficiently
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