Effect of dietary olive leaves (Olea europaea L.) on lipid and protein oxidation of refrigerated stored n‐3‐enriched pork

The objective of this study was to evaluate the effect of dietary olive leaves versus α‐tocopheryl acetate on lipid and protein oxidation of raw and cooked longissimus dorsi muscle from pigs fed diets supplemented with fish oil. Enrichment of pork with the very long chain n‐3 fatty acids increased (P ≤ 0.05) lipid oxidation in both raw and cooked chops during refrigerated storage, and decreased (P ≤ 0.05) the sensory attributes of the cooked chops, but had no effect (P > 0.05) on protein oxidation of both raw and cooked chops. Dietary olive leaves or α‐tocopheryl acetate had no effect (P > 0.05) on the fatty acid composition but decreased (P ≤ 0.05) lipid oxidation while exerting no effect (P > 0.05) on protein oxidation in both raw and cooked chops during refrigerated storage. In addition, dietary olive leaves at 10 g kg^?1 feed and α‐tocopheryl acetate at 200 mg kg^?1 feed exerted (P ≤ 0.05) a beneficial effect on the sensory attributes of cooked n‐3‐enriched chops.     

On the Chandra–Poram–Bose symbol error probability expression for coherent orthogonal M‐ary frequency shift keying

An expression for the average symbol error probability of coherent orthogonal M‐ary frequency shift keying in generalized fading was recently reported by Chandra, Poram, and Bose. We show that the expression is only exact for M = 2; it does, however, provide an accurate approximation for M > 2. By modifying the derivation of the reported expression, we derive a lower bound for M ?5 that has the same complexity as the reported expression, and we illustrate that, for M > 2, the expression of the derived bound provides an approximation that is also more accurate.Copyright © 2012 John Wiley & Sons, Ltd.     

The Bioaccumulation and Physiological Effects of Heavy Metals in Carrots,Onions, and Potatoes and Dietary Implications for Cr and Ni: A Review

The bioaccumulation of heavy metals in food tubers (carrots, onions, and potatoes) as a result of polluted irrigation water has been studied in this review paper. Given that heavy metals can cause a considerable oxidative stress, the impact of these metals to the physiology of the plants has also been assessed. The consumption of vegetables cross‐contaminated with heavy metals carries a considerable risk for humans (especially for children and pregnant women) and these dietary implications are discussed while European Food Safety Authority has been urged to look into this matter of concern.     

Online Detection of Repeated Structures in Point Clouds of Urban Scenes for Compression and Registration

Laser range scans of urban areas have a distinctive geometry dominated by facade and ground planes and repetitive regular fenestration. Detection of these ubiquitous features provides profound insights into the scene. We present a novel method for detecting major planes and repetitive architectural features. Armed with this knowledge we illustrate its application in compression and registration of range scans. What is more our algorithm operates online, processing the scan as it is retrieved by the scanner. This realtime approach opens up new possibilities in range data segmentation, compression and registration.     

A directly addressed monolithic LED array as a projection source

Abstract— Light‐emitting‐diode arrays have been fabricated and demonstrated by several groups in a variety of applications in which structured illumination is desired, such as direct‐view displays and fluorescence detection. State‐of‐the‐art LEDs can achieve a high optical power density, exceeding 40 W/cm². This allows the use of such LEDs, if patterned into an array, as a light and pattern source for projection displays. As a proof of principle, a projection source using a monolithically integrated patterned LED array at a power density of 0.69 W/cm², a source brightness of 21,000,000 cd/m², and a projected brightness of 100,000 cd/m² is reported. It is shown that an improved version of such a display would allow significantly better power consumption and overall system efficiency than permitted by current projection‐display concepts.     

Assessment and energy implications of street air temperature cooling by shade tress in Athens (Greece) under extremely hot weather conditions

Air temperature measurements under the vegetation canopy of trees in suburban streets and at reference points were carried out under mostly light wind conditions in five streets in the city of Athens (Greece) during a short exceptionally hot weather period in 2007. The average cooling effect at 1400 h (LST) was found to range from 0.5 to 1.6 °C and at 1700 h (LST) from 0.4 to 2.2 °C; the highest cooling effect of 2.2 °C was found to be reached in a street with high tree shaded area and minimal traffic load. These results imply the passive cooling potential of shade trees. The trees cooling effect values obtained for Athens, however, were found to be lower than the ones reported in similar studies in the Mediterranean region. In terms of residential energy implications, the elaboration of the results using simplified assumptions showed that the current level of tree cover in the examined streets may reduce summer time consumption for air conditioning during the day by 2.6–8.6% and during peak hours by 2.9–9.7%.     

DNA replication in the fission yeast: robustness in the face of uncertainty

DNA replication, the process of duplication of a cell's genetic content, must be carried out with great precision every time the cell divides, so that genetic information is preserved. Control mechanisms must ensure that every base of the genome is replicated within the allocated time (S-phase) and only once per cell cycle, thereby safeguarding genomic integrity. In eukaryotes, replication starts from many points along the chromosome, termed origins of replication, and then proceeds continuously bidirectionally until an opposing moving fork is encountered. In contrast to bacteria, where a specific site on the genome serves as an origin in every cell division, in most eukaryotes origin selection appears highly stochastic: many potential origins exist, of which only a subset is selected to fire in any given cell, giving rise to an apparently random distribution of initiation events across the genome. Origin states change throughout the cell cycle, through the ordered formation and modification of origin-associated multisubunit protein complexes. State transitions are governed by fluctuations of cyclin-dependent kinase (CDK) activity and guards in these transitions ensure system memory. We present here DNA replication dynamics, emphasizing recent data from the fission yeast Schizosaccharomyces pombe, and discuss how robustness may be ensured in spite of (or even assisted by) system randomness.