Compressive sensing based velocity estimation in video data

This paper considers the use of compressive sensing based algorithms for velocity estimation of moving vehicles. The procedure is based on sparse reconstruction algorithms combined with time-frequency analysis applied to video data. This algorithm provides an accurate estimation of object's velocity even in the case of a very reduced number of available video frames. The influence of crucial parameters is analysed for different types of moving vehicles.Comment: 4 pages, 5 figure

Polyphenolic Profiles of Selected Medicinal Herbs

The total phenolic contents and contents of main individual phenolics in plant extracts of bilberry, willow gentian, wild raspberry, spearmint and peppermint were determined. The above-ground parts of plants were subjected to the exhaustive extraction with ethanol using Soxhlet apparatus. The total phenolic content for the medicinal herbs, ranged from 2.8 to 15.2 mg GAE/g dm, were as follows: spearmint > peppermint > willow gentian > wild raspberry > bilberry. Using high-performance liquid chromatography, an extremely high content of rosmarinic acid was revealed in peppermint sample (849 mg/100 g dm). The plant of bilberry was characterized by greater amounts of chlorogenic acid, rutin and sinapinic acid (367, 248, and 229 mg/100 g dm, respectively) than the above-ground parts of other analyzed species

Immobilization of biocatalysts for enzymatic polymerizations:Possibilities, advantages, applications

Biotechnology also holds tremendous opportunities for realizing functional polymeric materials. Biocatalytic pathways to polymeric materials are an emerging research area with not only enormous scientific and technological promise, but also a tremendous impact on environmental issues. Many of the enzymatic polymerizations reported proceed in organic solvents. However, enzymes mostly show none of their profound characteristics in organic solvents and can easily denature under industrial conditions. Therefore, natural enzymes seldom have the features adequate to be used as industrial catalysts in organic synthesis. The productivity of enzymatic processes is often low due to substrate and/or product inhibition. An important route to improving enzyme performance in non-natural environments is to immobilize them. In this review we will first summarize some of the most prominent examples of enzymatic polymerizations and will subsequently review the most important immobilization routes that are used for the immobilization of biocatalysts relevant to the field of enzymatic polymerizations. (C) 2011 Elsevier Ltd. All rights reserved

UTICAJ ODREĐENIH STRESOGENIH FAKTORA NA KVALITET GOVEĐEG MESA

Stress inevitably occurs from farm to slaughter in modern cattle breeding. The effects of stress on behavior, physiological status, and meat quality have been examined by a number of authors. The mechanism of the effects of stress on physiological and biochemical changes and the consequent effects on meat quality attributes are significantly more limited. This review summarizes the primary stress factors that affect animal welfare and cause biochemical changes during the early postmortem period, which reduces the quality of carcasses and their nutritional quality. In order to obtain high quality meat, further studies are needed to uncover the complex mechanisms mentioned above.Publishe

Chemical changes caused by air drying of fresh plum fruits

Drying of fresh plums may provide an excellent delicacy, but such technological process is inevitably followed by certain chemical changes. Three plum cultivars were dried at two different temperatures (70°C and 90°C), and the effect of drying procedure on total anthocyanins, flavonoids, phenolics, selected bioactive compounds and antioxidant capacity were monitored. Polyphenolic compounds suffered strong changes, depending on the applied drying temperature. Drying procedure at both 70°C and 90°C influenced to a great extent for total polyphenolic content in the fresh plums of ‘Čačanska Rodna’ (1.8 and 2.1-fold increase, respectively). The identical drying conditions showed almost no influence on plums of ‘Stanley’, while drying ‘Mildora’ at 70°C resulted in significant decrease, but higher temperature caused the opposite effect. Statistical analysis showed high correlation between polyphenolic content and antioxidant activity, in all tested cultivars and for both fresh plums and prunes. Caffeoylquinic acids and caffeic acids suffered certain changes depending on the cultivar and temperature applied. Anthocyanins completely disappeared after drying. Although drying of fresh plums prompted severe chemical changes, prunes might be considered as functional food due to the high level of antioxidant.chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/http://www.ifrj.upm.edu.my/26%20(04)%202019/9%20-%20IFRJ181411.R1-Final.pd