Negative Magnetoresistance in Granular Bi - HTSC with Trapped Magnetic Fields

Magnetoresistive properties of granular Bi-based HTSC with trapped magnetic fields are investigated in the temperature region near superconducting transition . The effect of trapped field and transport current values and orientations on the field dependence of magnetoresistance is studied. It is found that for the magnetic field parallel and the current perpendicular to trapping inducing field the field dependence of magnetoresistance is nonmonotonic and magnetoresistance turns out to be negative for small fields. The magnetoresistance sign inversion field increases roughly linear with the trapped magnetic field and slightly decrease with transport current. The results are explained in the framework of model of magnetic flux trapping in granules or superconducting loops embedded in weak links matrix.Comment: 5 pages, 4 figures, submitted to conference LT2

Возможности и перспективы биосенсорных технологий в анализе продуктов питания

Existing developments in the field of biosensor technologies with the possibility of practical application for establishing food safety indicators were considered. The classification of biosensors is described depending on the physical phenomena underlying its work, the essence and examples of specific developments for the determination of microorganisms, heavy metals and antibiotics in food products are presented. Prospects of biosensor technologies in the food industry are estimated.Рассмотрены существующие разработки в области биосенсорных технологий с возможностью практического применения для установления показателей безопасности продуктов питания. Приведена классификация биосенсоров в зависимости от физических явлений, лежащих в основе его работы, суть и примеры конкретных разработок для определения микроорганизмов, тяжелых металлов и антибиотиков в пищевой продукции. Оценены перспективы биосенсорных технологий в пищевой промышленности

Crustal and Upper Mantle Velocity Model along the DOBRE-4 Profile from North Dobruja to the Central Region of the Ukrainian Shield : 2. Geotectonic Interpretation

Peer reviewe

APPLICATION OF THE DIAGRAM OF KAORU ISHIKAWA FOR QUALITY MANAGEMENT OF FOOD

In article one of the known instruments of quality management, Ishikawadiagram is considered. It represents a graphic way of research and definition of the most essential cause and effect interrelations between factors and consequences of the studied problem. In our work we used this method for identification of the factors promoting emergence of defect of firm cheese -the formation of cracks on its surface. Importance of this research is that damage of a crust of cheese can lead to product infection with harmful microorganisms, bringing it into unfitness. Having studied the main factors of production - raw materials, the production technology, a human factor, the equipment and the environment - we have come to a conclusion that high quality of production and lack of defects in it could be reached by continuous improvement of the monitoring system of quality at the enterprise and observance of requirements of normative documents imposed to food

APPLICATION OF NANOBIOTECHNOLOGY IN FOOD PRODUCTION

The term "nanotechnology" was first introduced by Japanese scientist Norio Taniguchi in the late 60s of XX century. By nanotechnology, he proposed to understand the process of creating new substances or materials by manipulating atoms or particles less than one billionth of a meter. Nanobiotechnology is a field of science at the intersection of biology and nanotechnology. Typically, this term is used in the application of nanotechnology devices and nanomaterials in biotechnology and the use of biological molecules for nanotechnology purposes. The sizes of nanobiological macromolecules (DNA, RNA), enzymes, antibodies are within the range of nanoscale. The results of developments in the field of nanobiotechnology have found practical application in medicine, food industry, etc. the Main purpose of Nanobio technology is to improve human health. The article shows the main directions of nanobiotechnology in food production, touched upon the problems of nanobiotechnology in the Russian Federation, considered the future benefits and feasibility of nanobiotechnology in food production

ECONOMIC EFFICIENCY OF IMPROVE PRODUCT QUALITY

Impact of product quality improvement on economic efficiency is considered. The classification of product quality indicators is represented, the impact of product quality on a manufacturer's profit is considered in two ways. The prospects of economic development by improving food production are evaluated