6 research outputs found

    Park- och trÀdgÄrdsavfall

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    Park- och trÀdgÄrdsavfall hanteras i ansenliga mÀngder i Sverige, ca 450 000 ton per Är. Normalt anvÀnds den mer vedartade delen i (kraft)vÀrmeverk och den resterande mÀngden komposteras. Den del som gÄr till förbrÀnning ger i dagslÀget relativt god ekonomisk utdelning, om den Àr fri frÄn föroreningar och har hög torrsubstanshalt. Den resterande mer lÀttnedbrytbara delen av avfallet borde dock kunna utnyttjas bÀttre, dÄ kompostering leder till höga behandlingskostnader utan att nÄgon energi kan tas tillvara. HÀr kan biogasproduktion vara en möjlighet. Detta projekt har bestÄtt av tre delar dÀr en framsiktad kompostrÄvara ur krossat park- och trÀdgÄrdsavfall har utvÀrderats utifrÄn möjligheten att anvÀnda en större andel av materialet som fastbrÀnsle, dess biogaspotential och möjligheten att anvÀnda rötresten frÄn denna biogasproduktion som biogödsel i jordbruket

    N-1-methylnicotinamide is a signalling molecule produced in skeletal muscle coordinating energy metabolism

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    Obesity is a major health problem, and although caloric restriction and exercise are successful strategies to lose adipose tissue in obese individuals, a simultaneous decrease in skeletal muscle mass, negatively effects metabolism and muscle function. To deeper understand molecular events occurring in muscle during weight-loss, we measured the expressional change in human skeletal muscle following a combination of severe caloric restriction and exercise over 4 days in 15 Swedish men. Key metabolic genes were regulated after the intervention, indicating a shift from carbohydrate to fat metabolism. Nicotinamide N-methyltransferase (NNMT) was the most consistently upregulated gene following the energy-deficit exercise. Circulating levels of N-1-methylnicotinamide (MNA), the product of NNMT activity, were doubled after the intervention. The fasting-fed state was an important determinant of plasma MNA levels, peaking at similar to 18 h of fasting and being lowest similar to 3 h after a meal. In culture, MNA was secreted by isolated human myotubes and stimulated lipolysis directly, with no effect on glucagon or insulin secretion. We propose that MNA is a novel myokine that enhances the utilization of energy stores in response to low muscle energy availability. Future research should focus on applying MNA as a biomarker to identify individuals with metabolic disturbances at an early stage.Peer reviewe

    Park- och trÀdgÄrdsavfall

    Get PDF
    Park- och trÀdgÄrdsavfall hanteras i ansenliga mÀngder i Sverige, ca 450 000 ton per Är. Normalt anvÀnds den mer vedartade delen i (kraft)vÀrmeverk och den resterande mÀngden komposteras. Den del som gÄr till förbrÀnning ger i dagslÀget relativt god ekonomisk utdelning, om den Àr fri frÄn föroreningar och har hög torrsubstanshalt. Den resterande mer lÀttnedbrytbara delen av avfallet borde dock kunna utnyttjas bÀttre, dÄ kompostering leder till höga behandlingskostnader utan att nÄgon energi kan tas tillvara. HÀr kan biogasproduktion vara en möjlighet. Detta projekt har bestÄtt av tre delar dÀr en framsiktad kompostrÄvara ur krossat park- och trÀdgÄrdsavfall har utvÀrderats utifrÄn möjligheten att anvÀnda en större andel av materialet som fastbrÀnsle, dess biogaspotential och möjligheten att anvÀnda rötresten frÄn denna biogasproduktion som biogödsel i jordbruket

    Polyolefin composition for medium/high/extra high voltage cables comprising benzil-type voltage stabiliser

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    The present invention relates to a polyolefin composition comprising (A) a polyolefin, (B) a benzil derivative comprising, preferably consisting of, the structural unit according to the following formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently from each other are hydrogen, or a hydrocarbyl group which may contain heteroatoms or at least two of said R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 together with the ring atoms of the ring system of formula (I) they are attached to, form a further aromatic or non-aromatic ring fused to the ring system of formula (I) and at least R1 or R2 is an ester group. The invention also relates to a wire or cable, in particular a medium, high or extra high voltage cable, comprising such a composition, and to the use of such a composition for the production of a wire or cable, in particular a medium, high or extra high voltage cable

    A New Application Area for Fullerenes: Voltage Stabilizers for Power Cable Insulation

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    Fullerenes are shown to be efficient voltage-stabilizers for polyethylene, i.e., additives that increase the dielectric strength of the insulation material. Such compounds are highly sought-after because their use in power-cable insulation may considerably enhance the transmission efficiency of tomorrow\u27s power grids. On a molal basis, fullerenes are the most efficient voltage stabilizers reported to date

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