Book Citation Index - Science (Web of Science)

Carotenoids are versatile isoprenoids that are important in food quality and health promotion. There is a need to establish recommended dietary intakes/nutritional reference values for carotenoids. Research on carotenoids in agro-food and health is being propelled by the two multidisciplinary international networks, the Ibero-American Network for the Study of Carotenoids as Functional Foods Ingredients (IBERCAROT; http://www.cyted.org) and the European Network to Advance Carotenoid Research and Applications in Agro-Food and Health (EUROCAROTEN; http://www.eurocaroten.eu). In this review, considerations for their safe and sustainable use in products mostly intended for health promotion are provided. Specifically, information about sources, intakes, and factors affecting bioavailability is summarized. Furthermore, their health-promoting actions and importance in public health in relation to the contribution of reducing the risk of diverse ailments are synthesized. Definitions and regulatory and safety information for carotenoid-containing products are provided. Lastly, recent trends in research in the context of sustainable healthy diets are summarized.

The presence of electromagnetic waves on two-dimensional interfaces has been extensively studied over the last several decades. Surface plasmonic polariton (SPP), which normally exists at the interface between a noble metal and a dielectric, is treated as the most widely investigated surface wave. SPPs have promoted new applications in many fields such as microelectronics, photovoltaics, etc. Recently, it has been shown that by nanostructuring the metal surface, it is possible to modify the dispersion of SPPs in a prescribed manner. Herein, we demonstrate the existence of a new kind of surface wave between two anisotropic meta-materials. In contrast to extensively studied surface waves such as SPPs and Dyakonov waves, the surface waves supported by the nanostructured semiconductor metamaterial cross the light line, and a substantial portion at lower frequencies lies above the free-space light line. Consequently, the proposed structure will interact with the material via leaky waves.

Nagrinėjama automobilių bei geležinkelio transporto taršos įtaka kelio aplinkos komponentams. Išanalizuota teršalų kiekiai bei jų sklaida pakelių ore, dirvožemyje, paviršiniuose vandens telkiniuose, nustatyta triukšmo sklaida. Supažindinama su triukšmo sklaidos lygiais magistraliniuose keliuose, geležinkeliuose ir jų sankirtose. Aprašomi natūriniai bei laboratoriniai tyrimai, analizuojant įvairių transporto infrastruktūroje susidarančių teršalų poveikį kelio aplinkos elementams. Apžvelgiama transporto įtaka aplinkai, automobilių kelių tinklas Lietuvoje, fizinės taršos ypatumai. Išanalizuota atmosferos tarša kietosiomis dalelėmis magistralinių ir krašto kelių bei žvyrkelių pakelėse. Pateikta dirvožemio taršos sunkiaisiais metalais bei chloridais duomenys, išnagrinėtas šių teršalų poveikis žoliniams augalams. Įvertintas kelių priežiūros druskų tirpalų bei sunkiųjų metalų mišinių poveikis hidrobiontams.Leidinys skirtas mokslininkams, aplinkos apsaugos specialistams. Jis kaip mokslinių žinių šaltinis gali būti pateikiamas doktorantūros ir magistrantūros studentams.

The 3D vehicle with the hydraulic braking system and disc brake with the wheel has been investigated. The dynamic models of the disk brake assembly and the wheel have been constructed. The automobile hydraulic braking system consisting of two contours is considered. . The mathematical model of the hydraulic braking system is presented, where the flow of liquid and the interaction of liquid with the rigid bodies are taken into account. The flow of fluid in a hydraulic system is described by a system of equations of a hyperbolic type, which is solved by a characteristics method. During the mathematical simulations and natural experimentations the following results were achieved. The systems of equations of dynamic models’ motions are solved by numerical methods. The dynamic characteristics of the braking system of the automobile are obtained. The results of extreme braking tests and calculations are presented.