| 1. |
- Axelberg, Peter, et al.
(författare)
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Measuring method for deciding direction to a flickering source.
- 2013
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Patent (populärvet., debatt m.m.)abstract
- The present invention relates to a method for deciding the direction to a flickering source in relation to a measurement point in an electrical network with alternating current with a network frequency (fc) with low-frequency amplitude variation from the flickering source. The invention is characterized in that the method comprises the steps: - recording of an amplitude-modulated current signal (i(n)) comprising signals that originate from the network frequency (fc) and the low-frequency amplitude variations in the current signal (i(n)); - recording of an amplitude-modulated voltage signal ((u(n)) comprising signals that originate from the network frequency (fc) and the low-frequency amplitude variations in the voltage signal (u(n)); - creation of a flicker power with a sign value by multiplication of the low-frequency amplitude variations in the current signal and the low-frequency amplitude variations in the voltage signal, and - analysis of the sign value, with the sign value indicating in which direction the flickering source is to be found in relation to the measurement point. The method also comprises an arrangement designed to be used when carrying out the method.
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| 2. |
- Axelberg, Peter, et al.
(författare)
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Measuring method for deciding direction to a flickering source
- 2003
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Patent (populärvet., debatt m.m.)abstract
- Method and arrangement for deciding the direction to a flickering source in relation to a measurement point in an electrical network with alternating current with a network frequency with low-frequency amplitude variations from the flickering source. The method includes the steps: recording an amplitude-modulated current signal having signals that originate from the network frequency and the low-frequency amplitude variations in the current signal; recording an amplitude-modulated voltage signal having signals that originate from the network frequency and the low-frequency amplitude variations in the voltage signal; creating a flicker power with a sign value by multiplication of the low-frequency amplitude variations in the current signal and the low-frequency amplitude variations in the voltage signal, and analyzing the sign value, with the sign value indicating in which direction the flickering source is to be found in relation to the measurement point.
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| 3. |
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| 4. |
- Barghi, Hamidreza, et al.
(författare)
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Bulk Hydrophilic Functionalization of Polyamide 46
- 2013
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Patent (populärvet., debatt m.m.)abstract
- (EN)A modified polymer as result of a bulk functionalization of polyamide 46 (PA 46) is presented, as well as methods for synthesizing the modified polymer. This functionalization of PA 46 is performed to provide a homogenous semi-permeable polyamide 46 capable of different charges and different porosities with particles of nanoscale size in order to replace or improve other polyamide fibers used in the textile industry, filtering processes, selective sorption, controlled release devices, phase transfer catalysts, chromatography media, biocompatible capsules, artificial skins, organs, bone void repair as well as in cell bioreactors and incubators, dental impliments, medical devices, clothing, detectors, perfusion devices, in regenerative medicine, and fuel cells. (FR)Un polymère modifié comme résultat d'une fonctionnalisation en masse de polyamide 46 (PA 46) est présenté, ainsi que des procédés de synthèse du polymère modifié. Cette fonctionnalisation de PA 46 est effectuée pour fournir un polyamide 46 semi-perméable homogène apte à des différentes charges et de différentes porosités avec des particules d'une dimension à l'échelle nanométrique afin de remplacer ou d'améliorer d'autres fibres de polyamide utilisées dans l'industrie textile, les procédés de filtration, la sorption sélective, les dispositifs à libération entretenue, les catalyseurs de transfert de phase, les supports de chromatographie, les capsules biocompatibles, les peaux artificielles, les organes, la réparation de cavités osseuses ainsi que les bioréacteurs et incubateurs de cellules, les implants dentaires, les dispositifs médicaux, les vêtements, les détecteurs, les dispositif de perfusion, en médecine régénérative et dans les piles à combustible.
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| 5. |
- Fatarella, Enrico, et al.
(författare)
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Polymeric composition comprising functionalized PEEK
- 2014
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Patent (populärvet., debatt m.m.)abstract
- The present invention relates to a polymeric composition comprising functionalized polyetheretherketone (PEEK) of formula (II), in admixture with a co-polymer having a melting point lower than the melting point of the non-functionalized PEEK of formula (I). The invention further relates to the use of said composition for the preparation of fibers having antibacterial, decontaminant and self-cleaning properties, useful, for example, for making sanitary garments, such as sanitary coats and masks and for making, for example, filters for ventilation systems and filters for kitchen hoods.
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| 6. |
- Kalantar Mehrjerdi, Adib, 1965-, et al.
(författare)
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Geothermal pipe collector
- 2014
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Patent (populärvet., debatt m.m.)abstract
- A geothermal pipe collector is provided. The geothermal pipe collector is made from a polymer composition comprising: more than 50wt% polyethylene, 0.1wt% -35wt% talc and 0.5wt% -10wt% carbon black.
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| 7. |
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| 8. |
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| 9. |
- Seoane Martinez, Fernando, et al.
(författare)
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Method and apparatus for brain damage detection
- 2011
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Patent (populärvet., debatt m.m.)abstract
- The present invention comprises method and apparatus for detecting injury resulting in pathological processes affecting tissue within a portion of the body in a mammal, particularly a human brain. Said method comprises the steps of applying a first and a second pair of electrodes around the periphery of the portion, generating an alternating current at a known current level and applying said current between the first pair of electrodes, detecting and measuring the alternating voltage developed between the second pair of electrodes, and calculating the impedance of said portion. Further, the alternating current is applied between the first pair of electrodes in a series of increasing frequencies ranging within a known spectrum, and the resistance and the reactance for each frequency are detected and plotted against said frequency. The electrical impedance of said portion is calculated for each frequency and plotted into an impedance plot. Said resistance-reactance-and impedance-plots are finally analyzed, and any notable changes compared to normal spectrum profiles and plots are detected and evaluated.
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