Abstract:
The matter of the invention is a filter material that is made of a nanofibrous layer of polyvinylalcohol, a non-woven fabric made of polyvinylalcohol is used as a carrier of our filter material, which creates the overall filter product. The filter material is the only synthetic polymer that has a chain made of carbon-carbon bonds and is degradable, whereas H2O and CO2 are the degradation products. Physico-chemical properties, minimal toxicity and biodegradability predetermine the material not only for use in the biomedical and pharmaceutical industries. The filter material, including the nanofibrous layer, meets ecological requirements regarding the environment, their subsequent disposal does not burden the environment.
Abstract:
Изобретение относится к области энергетики, а именно к области использования солнечной энергии, и может быть применено в солнечных коллекторах с использованием энергии солнечного излучения в качестве источника теплового излучения. Техническим результатом изобретения является снижение теплопотерь и увеличение эффективности преобразования солнечной энергии. Солнечный коллектор включает корпус, выполненный из двух, по крайней мере, однокамерных стеклопакетов, соединенных герметичной рамкой. Рамка выполнена с возможностью образовывать заполненное высокотемпературным теплоносителем герметичное пространство между стеклопакетами с узлом подачи высокотемпературного теплоносителя и узлом выхода высокотемпературного теплоносителя. При этом стеклопакеты выполнены вакуумными.
Abstract:
Частицы антипирена гидроксида магния, в том числе поверхностно обработанные, имеют гексагональную пластинчатую структуру с удельной площадью поверхности не более 20 м 2 /г, средний диаметр вторичных частиц не более 2 мкм, диаметр 10% вторичных частиц не более 0,8 мкм, диаметр 90% вторичных частиц не более 5 мкм, продольный размер первичных частиц от 150 до 900 нм и толщину от 15 до 150 нм. На первой стадии производства указанных частиц осуществляют взаимодействие водного раствора хлорида магния с щелочным компонентом при температуре не выше 100°С и атмосферном давлении при мольном отношении ионов OH":Mg ++ , равном (1,9-2, 1): 1. На второй стадии проводят гидротермальную перекристаллизацию частиц Mg(OH) 2 при температуре 120-220°С, давлении 0,18-2,3 МПа в течение 2-24 ч. При этом реакционную массу подвергают периодическим гидроударам перегретым паром с температурой 160-240°С и давлением 0,6-3,3 МПа. Изобретение позволяет получить частицы гидроксида магния с регулируемыми размерами для их применения в полимерных матрицах без снижения механических свойств полимеров.
Abstract:
Embodiments of the invention generally include a method of forming a nonvolatile memory device that contains a resistive switching memory element that has improved device switching performance and lifetime, due to the addition of a current limiting component disposed therein. The electrical properties of the current limiting component are configured to lower the current flow through the variable resistance layer during the logic state programming steps by adding a fixed series resistance in the resistive switching memory element of the nonvolatile memory device. In one embodiment, the current limiting component comprises a tunnel oxide that is a current limiting material disposed within a resistive switching memory element in a nonvolatile resistive switching memory device. Typically, resistive switching memory elements may be formed as part of a high-capacity nonvolatile memory integrated circuit, which can be used in various electronic devices, such as digital cameras, mobile telephones, handheld computers, and music players.
Abstract:
The invention relates to a composition of solid lipid nanoparticles taking the form of a nano-coating for natural fresh foodstuffs, such as seeds, cereals, fruits or vegetables, preferably fresh fruits and vegetables which are coated by means of fluidisation, immersion or spraying. According to the invention, the composition comprises: (a) solid lipids or wax, (b) emulsifying stabilising agents, and (c) film-forming materials in an aqueous dispersion or solution. The inclusion of a submicronic lipophilic system in aqueous dispersion allows the application of the composition to be easily controlled since it is a fluid system with low viscosity, which is advantageous in that it can be applied easily and uniformly and provides improved coating properties, such as sheen, mechanical strength and gas permeability inter alia.
Abstract:
In the method, a pre-selected working area of a graphene film with a linear dimension of 2,000 nm, which working area is divided into sections having a dimension of 50-100 nm, is subjected to the effect of a pulsed alternating magnetic field with a frequency of 3 terahertz that corresponds to the transition from a ground energy level, corresponding to the non-excited state of spin density, to a fourth working energy level of the excited state of spin density in the graphene film, thus causing spin density pumping. A spatially localized external magnetic field is generated around the edges of the working area, which resonantly reflects spinons with a working frequency of 0.5-1 terahertz that corresponds to the transition from a third working energy level to a second working energy level of the excited state of spin density, said spinons causing the induced coherent radiation of working frequency spin waves as they pass through the working area.
Abstract:
A method of making a nanoparticle filled dielectric material. The method includes mixing nanoparticle precursors with a polymer material and reacting the nanoparticle precursors mixed with the polymer material to form nanoparticles dispersed within the polymer material to form a dielectric composite.