Addition of cashew tree gum to maltodextrin-based carriers for spray drying of cashew apple juice

This study involved an attempt to totally or partially replace maltodextrin DE10 (MD10) by cashew tree gum (CTG) as a drying aid agent in spray drying of cashew apple juice. The objective was to evaluate the impact of drying aid/cashew apple juice dry weight ratio (D/C, ranging from 3 to 5) and degree of replacement of MD10 with CTG (CTG_R, ranging from 0% to 100%) on ascorbic acid retention (AAR), hygroscopicity, flowability and water solubility of spray dried cashew apple juice powder. AAR was increased from 72.90% to 95.46% by increasing D/C from 3 to 5. CTG was shown as a promising maltodextrin replacer, being more effective than the latter to decrease powder hygroscopicity. The most adequate drying conditions (D/C = 5, CTG_R≥50%) resulted in more than 90% of AAR, and produced a powder with good flowing properties and water solubility.     

Temperature-Dependent Indentation Behavior of Transformation-Toughened Zirconia-Based Ceramics

Indentation behavior of Ce-TZP, Y-TZP, and Mg-PSZ between room temperature and 1300°C was investigated. Hardness decreased with increasing temperature for all three materials, but indentation cracking increased with increasing temperature. The opposing temperature dependences are discussed in terms of dislocation and transformation plasticity.     

High nutrient loading and climatic parameters influence the dominance and dissimilarity of toxigenic cyanobacteria in northern bays of Lake Victoria

Eutrophication of Lake Victoria led to changes in its phytoplankton communities. However, different levels of eutrophication exist in the open lake and the bays, and between embayments. This study utilized spatial and temporal sampling of Napoleon Gulf and Murchison Bay, exhibiting different trophic conditions. Over one year, we investigated phytoplankton biomass, richness, diversity and dissimilarity, and related the dynamics of the dominant species to the limnological and climatic conditions. The results confirmed that Napoleon Gulf and Murchison Bay showed large differences in eutrophication status, with lower nutrient concentrations in Napoleon Gulf than in Murchison Bay, where a strong gradient was observed from inshore to offshore areas. These nutrient dynamics resulted in a 4 to 10 fold higher chlorophyll-a in Murchison Bay than in Napoleon Gulf. From the embayments, 135 phytoplankton taxa were recorded with no significant differences in alpha diversity. However, high dissimilarity in community structure was observed in beta diversity, mostly due to a turnover among the dominant toxigenic species. Thus, from a similar species pool, there was a shift in the dominant toxigenic cyanobacteria from Microcystis flos-aquae and M. aeruginosa in Murchison Bay, Dolichospermum circinale and Planktolyngbya circumcreta in Napoleon Gulf to D. circinale in the offshore stations. These cyanobacteria are toxigenic taxa with known health hazards. Using partial least square models, we showed that both climatic variables (e.g. wind, solar radiation) and levels of inorganic dissolved nutrients (e.g. SRP, NO₃^–, and NH₄⁺) are the main drivers of differences and dominance in cyanobacteria communities in northern Lake Victoria.     

Comparison of isolation procedures for essential oils

Summary The influence of the time of distillation on the composition of the essential oils isolated from seed of ajowan, caraway, coriander, and cumin was investigated. The oils were isolated by distillation, as well as by simultaneous distillation-extraction. It was observed that the order of recovery of the oil constituents was determined by their solubility in the distillation water. Hence, the oxygenated compounds, although with higher boiling points, distilled before the hydrocarbons. In comparison, data are included for the oils obtained by solvent extraction from ground seed of the same species. In these cases the proportion of hydro carbons was higher than in the distilled oils. There was also evidence to suggest thatp-cymene in the oils of ajowan and cumin was partly an artefact of distillation.

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Vergleich von Isolierungsverfahren ätherischer ÖleII. Ajowan, Künunel, Koriander und Kreuzkümmel

Zusammenfassung Der Einfluß der Destillationsäuer auf die Zusammensetzung der ätherischen Öle von Ajowan, Kümmel, Koriander und Kreuzkümmel wurde untersucht. Die Öle wurden sowohl durch Destillation als auch durch ein Destillation-Extraktionsverfahren isoliert. Es wurde gezeigt, daß die Reihenfolge der Ölbestandteile während der Destillation bestimmt wurde von ihrer Löslichkeit im Destillationswasser, weshalb die höher siedenden sauerstoffhaltigen Komponenten schneller als die Kohlenwasserstoffe übergehen.Zum Vergleich wurden Angaben aufgenommen für Öle, die mit organischen Lösungsmitteln aus gemahlenen Früchten extrahiert worden waren. In diesen Fällen war die Menge der Kohlenwasserstoffe höher als bei den destillierten Ölen. Es gibt Hinweise dafür, daßp-Cymol in Ajowan- und Kreuzkümmelöl teilweise ein Artefakt der Destillation ist.

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Part I: Chem. Mikrobiol. Technol. Lebensm. (in press)     

Black Intelligence Test of Cultural Homogeneity and Wechsler Adult Intelligence Scale scores of Black and White police applicants.

Administered the 100-item Black Intelligence Test of Cultural Homogeneity (BITCH) and the full WAIS to 83 Black and White police applicants. Ss' mean age was in the early 20's, and their mean educational level was 21/2 yrs of college. Results reveal considerable overlap in the distributions of individual WAIS Full Scale IQ between the Black and White Ss, but 2 totally nonoverlapping distributions of scores on the BITCH, with no White Ss scoring above Black Ss. BITCH means were as follows: White females, 60.9; White males, 64.1; Black females, 86.7; and Black males, 83.9. The corresponding WAIS Full Scale IQ means were 117.2, 117.8, 110.2, and 101.6, respectively. Correlational analyses between the BITCH and each of the 14 WAIS measures revealed no relation between score on the BITCH and score on the WAIS. It is concluded that the lack of concurrent validity for the present form of the BITCH and its lack of adequate ceiling for Black applicants presents problems for its use in a program of police selection. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Role playing and interpersonal-conflict reduction.

80 female undergraduates attempted to resolve personal anger conflicts by participating in short counseling-analog sessions. Each S used 1 of 4 procedures: role play, discharge, intellectual analysis, or control. It was hypothesized that role play, which provides opportunity for both intellectual insight and emotional experience, would be more effective than discharge, which de-emphasizes insight, and intellectual analysis, which de-emphasizes emotional experience. E. T. Gendlin's (1969) focusing scale, a measure of the degree to which people can use their emotional experience facilitatively, was also administered. It was predicted that high-focusing role-play Ss would show the most reduction of anger and conflict (Activation-Deactivation Adjective Check List). On the whole, role play was the most effective procedure for reducing anger, hostile attitudes, and behavioral aggression. None of the predictions on focusing were borne out. (21 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Televised self-confrontation and recalled affect: A new look at videotape recall.

Utilized 2 analogy studies of videotape feedback to investigate the extent to which 10 graduate students with previous video feedback training could recall feelings they experienced during a dyadic interaction, when shown a televised replay of that interaction. Pairs of Ss were trained to continuously rate their degree of comfort or discomfort during the actual ("live") interaction and, subsequently, as they watched a replay of their interaction. A push-button recording system was employed with the self-rating data from live and recall sessions, with the 2 sessions exactly synchronized for the purpose of analysis. Results of 2 studies with role-playing counseling students and with intimate male-female couples yielded moderate correlations between live self-ratings and those recalled under videotape stimulation. It was also found that playing the client rather than the counselor role (Study 1) or having one's self-ratings disclosed to a partner (Study 2) significantly increased the association between live and recalled self-ratings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Time and false electromyographic feedback: Effect on tension headache.

Measured frontalis EMG amplitude in 20 19–38 yr old Ss with tension headaches. Of these, 10 were given auditory feedback that accurately reflected EMG levels, and the other 10 received false feedback. Ss receiving relevant feedback significantly decreased both EMG and number of headaches as compared to controls. Controls did, however, show decreasing trends in the 2 variables. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comment on Kaufman's "Should short-form validity coefficients be corrected?"

As more and more subtests are added to the short form, its validity as determined by McNemar's formula approaches unity, whereas the upper limit to its validity as determined by the corrected formula is the reliability of the Full Scale. This difference seems to correspond to Kaufman's distinction between using the short form as part of the Full Scale and using it as a replacement. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cumulative deficit in IQ of Blacks in the rural South.

Investigated the cumulative deficit hypothesis with respect to age decrement in IQ between the ages of 5 and 18 in 826 Black and 653 White school children in rural Georgia. Age decrement in verbal and nonverbal IQ (California Test of Mental Maturity) was measured by the average IQ difference between younger and older siblings. It was found that Blacks (but not Whites) showed significant and substantial decrements in both verbal and nonverbal IQs as a linear function of age in the rank from about 5 to 16 yrs of age. An environmental interpretation of the age decrement in IQ seems reasonable in view of the comparative lack of such a decrement in a parallel study (A. R. Jensen, see record 1975-04914-001) of California Blacks whose environmental circumstances were markedly better than those of the Black sample from rural Georgia. (PsycINFO Database Record (c) 2010 APA, all rights reserved)