540 resultados para Mag


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Invocatio: I.N.J.

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Invocatio: D.D.

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Invocatio: D.F.G.

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Invocatio: D.D.

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Invocatio: F.D.G.

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Invocatio: Q.B.V.D.

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Invocatio: D.D.

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Invocatio: D.D.

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Invocatio: [hepreaa].

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Invocatio: D.F.G.

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Invocatio: D.D.

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Invocatio: [hepreaa].

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Omega-3 enriched partial acylglycerols are beneficial for human health. The aim of this study was to obtain monoacylglycerols (MAG) and diacylglycerols (DAG) by means of glycerolysis of fish oil catalyzed by a lipase from Rhizomucor miehei in the presence of food grade surfactants (Tween 65, 80 or 85). Glycerolysis was successful in the reaction media for all the tested surfactants, showing their potential for use as additives in such a system. The best results, however, were obtained for the reaction medium in the absence of surfactant whose peroxide value was the lowest after glycerolysis.

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Suurlujuusterästen käyttö erityisesti auto-, kuljetusväline- ja nostovälineteollisuudessa on lisääntynyt jo pidemmän aikaa. Teräsvalmistajat kehittävätkin jatkuvasti lujempia ja paremmin hitsattavia teräslaatuja markkinoille. Lujempia teräksiä käyttämällä on mahdollista saavuttaa materiaali- ja painosäästöä, jolla on suora vaikutus hyötykuorman lisääntymiseen, polttoainetalouteen, suoritusarvoihin ja jopa valmistuskustannuksiin. Tässä diplomityössä tutkittiin kahdeksan eri suurlujuusteräksen ja kolmen kulutusteräksen HAZ-alueen murtumissitkeyttä kolmella eri lämmöntuonnilla tehdyllä hitsauksella. Suurlu-juusterästen myötölujuustaso vaihteli 650 MPa:n ja 700 MPa:n välillä, ja kulutusteräksillä vastaavasti 800 MPa:n ja 1000 MPa:n välillä. Murtumissitkeyskokeet tehtiin standardoidun CTOD-testausmenetelmän mukaisesti -40 °C lämpötilassa. Kokeissa käytettiin 10 mm x 5 mm SE(B)-kolmipistetaivutussauvoja. Koetuloksia voidaan käyttää apuna arvioitaessa eri teräslaatujen hitsauksellista sopivuutta erityisesti väsyttävän kuormituksen alaiseen rakenteeseen. Kokeiden tuloksena saatiin jokaiselle materiaalille neljä CTOD-arvoa. Kolmella eri lämmöntuonnilla tehtyjen koesauvojen lisäksi mitattiin ilman hitsausta olevista koesauvoista perusaineen murtumissitkeys. Yhteensä CTOD-koe tehtiin 44 koesauvalle ja lisäksi muutamalle harjoitussauvalle. Testattavien kappaleiden suuren määrän takia kokeet voitiin tehdä jokaiselle materiaali- lämmöntuonti- yhdistelmälle ainoastaan yhteen kertaan.

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For any international companies who wish to enter the Chinese market, quality is base on the fundamental. The companies are coming to realize the importance of quality gradually, thus companies have been put the quality problems on the agenda. The competitiveness of companies comes from quality. Quality is the key to success, and it can decide that the companies can be accepted or eliminated by the market. Due to the obvious benefits, the demand of the method of how to achieve high quality of product keeps growing. During achieving the high quality process, the main troubles come from the impact between Eastern and Western culture. Chinese culture which is different with Western one have lasted as long as five thousand years. Such a culture deeply rooted in the hearts of Chinese people, and effected generation after generation of Chinese people's working style and ways of thinking. This thesis determines how to find a good fit point between Eastern and Western culture. Doing right thing by the right way. The nature of improving quality is improving management level in fact. "How to manage, who should be managed", the thesis explains the basic and best option to achieve those. It describes three-dimension-style management to monitoring the working process. This kind of management style can inspect production process from horizontal and vertical direction. In this management way, it defines effective evaluation system to every subcontractor, and makes the companies to achieve the ultimate goal - satisfy quality. Because of the importance of human factor, the thesis determines the range of training of the inspector and welder due to the current situation of China. The results show that in order to reach reliable training effective evaluation, not only the quality of the human but also the ultimate goal of product quality.