Optimal topology for an intra-vehicle antenna implemented on dashboard foams

This paper presents several antenna topologies for intra-vehicle communication in the unlicensed 2.45 GHz ISM band (2.4 GHz - 2.485 GHz). The antennas are implemented using flexible foam materials compatible with the production process of dashboards, as dashboards offer a large platform for easy and unobtrusive integration. In order to obtain the optimal intra-vehicle antenna, the different topologies are compared in terms of antenna gain, efficiency, AR bandwidth and AR robustness against small fabrication errors

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PREFERENSI KECOAK AMERIKA Periplaneta americana (L.) (Blattaria : Blattidae) TERHADAP BAITING GEL

Kecoak eriplaneta amricana merupakan jenis kecoak yang paling banyak terdapat di lingkungan permukiman di Indonesia. Kecoak bsa menjadi vektor mekanik berbagai patogen seperti jamur, virus, bakteri dan protozoa. Penelitian ini bertujuan untuk menganalisis perbedaan preferensi Periplaneta americana terhadap baiting gel komersial berbahan aktif imidaklorprid (BTX) dan fipronil (MFF). Penelitian ini di lakukan di Laboratorium Entomologi FKM Universitas Diponegoro. Desain penelitian yang digunakan adalah Ekserimen murni menggunakan olfactometer dengan pengulan sebanyak 3 kali. Data dianalisis dengan menggunakan t-test independent (a=0,05). Hasil pengamatan menunjukan bahwa preferensi pada stadium nimfa Periplaneta americana tidak ada perbedaan yang signifikan terhadap baiting gel BTX dan MFF dengan p value 0,710. Begitu juga pada stadium imago Periplaneta americana tidak ada perbedaan preferensi yang signifikan terhadap baiting gel BTX dan MFF dengan p value 0,849. Baiting gel lebih menarik dan efektif digunakan untuk pengendalian kecoa amerika dewasa dibandingkan nimfa. Kata Kunci: prefrensi, kecoa, baiting ge

Rosmarinus Officinalis Leaves as a Natural Source of Bioactive Compounds

In an extensive search for bioactive compounds from plant sources, the composition of different extracts of rosemary leaves collected from different geographical zones of Serbia was studied. The qualitative and quantitative characterization of 20 rosemary (Rosmarinus officinalis) samples, obtained by microwave-assisted extraction (MAE), was determined by high performance liquid chromatography coupled to electrospray quadrupole-time of flight mass spectrometry (HPLC–ESI-QTOF-MS). The high mass accuracy and true isotopic pattern in both MS and MS/MS spectra provided by the QTOF-MS analyzer enabled the characterization of a wide range of phenolic compounds in the extracts, including flavonoids, phenolic diterpenes and abietan-type triterpenoids, among others. According to the data compiled, rosemary samples from Sokobanja presented the highest levels in flavonoids and other compounds such as carnosol, rosmaridiphenol, rosmadial, rosmarinic acid, and carnosic acid. On the other hand, higher contents in triterpenes were found in the extracts of rosemary from Gložan (Vojvodina).This work was financially supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia through a national project (Project Number TR 31014) and through scientific and technological cooperation between the Republic of Serbia and Spain (Project Number RE451-03-02635/2011-14/4). The authors are also grateful to the Spanish Ministry of Science and Innovation for the project AGL2011-29857-C03-02 and the grant FPI BES-2009-028128, Andalusian Regional Government Council of Innovation and Science for the Excellence Projects P09-CTS-4564, P10-FQM-6563 and P11-CTS-762

Inhibition of Gastric Lipase as a Mechanism for Body Weight and Plasma Lipids Reduction in Zucker Rats Fed a Rosemary Extract Rich in Carnosic Acid

BACKGROUND: Rosemary (Rosmarinus officinalis L.) extracts (REs) exhibit hepatoprotective, anti-obesity and anti-inflammatory properties and are widely used in the food industry. REs are rich in carnosic acid (CA) and carnosol which may be responsible for some of the biological activities of REs. The aim of this study was to investigate whether inhibition of lipase activity in the gut may be a mechanism by which a RE enriched in CA (40%) modulates body weight and lipids levels in a rat model of metabolic disorders and obesity. METHODS AND PRINCIPAL FINDINGS: RE was administered for 64 days to lean (fa/+) and obese (fa/fa) female Zucker rats and body weight, food intake, feces weight and blood biochemical parameters were monitored throughout the study. Lipase activity (hydrolysis of p-nitrophenylbutyrate) was measured in the gastrointestinal tract at the end of the study and the contents of CA, carnosol and methyl carnosate were also determined. Sub-chronic administration of RE moderately reduced body weight gain in both lean and obese animals but did not affect food intake. Serum triglycerides, cholesterol and insulin levels were also markedly decreased in the lean animals supplemented with RE. Importantly, lipase activity was significantly inhibited in the stomach of the RE-supplemented animals where the highest content of intact CA and carnosol was detected. CONCLUSIONS: Our results confirm that long-term administration of RE enriched in CA moderates weight gain and improves the plasma lipids profile, primarily in the lean animals. Our data also suggest that these effects may be caused, at least in part, by a significant inhibition of gastric lipase and subsequent reduction in fat absorption

Determination of antioxidant compounds in foodstuff

© 2017 Scrivener Publishing LLC. Phenolic compounds, vitamins and carotenoids are naturally found in different foodstuff. These antioxidant compounds play an important role in human health and are of interest for the food, pharmaceutical and cosmeceutical industries. Modern chromatographic and spectrometric techniques have made analysis easier than ever before, but their success depends on the extraction method used. In fact, the different antioxidants are identifified using chromatographic techniques coupled to diff erent specififi c detectors according to the characteristics of each molecule. Beyond their well-known health-promoting effects, antioxidant molecules can also be used to functionalize or preserve the freshness, nutritive value, flflavor and color of foodstuff s, which justify their incorporation into several matrices. In this chapter, the most common antioxidant compounds in foodstuff will be described, as well as the methodologies involved in their extraction, separation, identifification and quantifification. The bioactive properties and industrial applications of these compounds through innovative techniques will also be taken into account.info:eu-repo/semantics/publishedVersio