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- Deleniv, Anatoli, 1969, et al.
(författare)
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Silicon Substrate Integrated Ferromagnetic Nanowires for Microwave
- 2007
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Ingår i: 37th European Microwave Conference, EUMC; Munich; Germany; 9 October 2007 through 12 October 2007. - 9782874870033 ; 2, s. 1310-1313
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Konferensbidrag (refereegranskat)abstract
- Magneto-dielectric nano-composite(magnetic nanowire in anodic alumina) films are fabricated on silicon substrate. Kerr measurements reveal magnetic properties of the nano-composite,while the microwave measurements in the frequencyband 0.2-18 GHz show relatively low dielectric losses. After a proper optimisation these nanocomposite films may be used in nonreciprocal and magnetically tuned devices in silicon substrate based Multi-Chip Modules (MCM).
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- Flanagan, J Randall, et al.
(författare)
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Control strategies in object manipulation tasks.
- 2006
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Ingår i: Current Opinion in Neurobiology. - : Elsevier BV. - 0959-4388. ; 16:6, s. 650-9
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The remarkable manipulative skill of the human hand is not the result of rapid sensorimotor processes, nor of fast or powerful effector mechanisms. Rather, the secret lies in the way manual tasks are organized and controlled by the nervous system. At the heart of this organization is prediction. Successful manipulation requires the ability both to predict the motor commands required to grasp, lift, and move objects and to predict the sensory events that arise as a consequence of these commands.
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- Haraldsson, Klas Tommy, et al.
(författare)
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3D Polymeric Microfluidic Device Fabrication via Contact Liquid Photolithographic Polymerization (CLiPP)
- 2006
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Ingår i: Sensors and actuators. B, Chemical. - : Elsevier BV. - 0925-4005 .- 1873-3077. ; 113:1, s. 454-460
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Tidskriftsartikel (refereegranskat)abstract
- In this contribution, a new method for the fabrication of complex polymeric microfluidic devices is presented. The technology, contact liquid photolithographic polymerization (CLIPP). overcomes many of the draw backs associated kith other rapid prototyping schemes, such as limited materials choices and time-consuming microassembly protocols. CUPP shares many traits with other photolithographic methods, but three distinct features: (i) liquid photoresists in contact with the photomask. (ii) readily removed sacrificial Materials. and (iii) living radical processes, enable multiple polymeric chemistries and mechanical properties while simultaneously enabling facile fabrication of 3D geometries and surface chemistry control. This contribution details fabrication techniques and methods for the fabrication of high aspect ratio posts covalently bonded to a polymeric substrate, an array of independently stacked bars on top of perpendicular bars, multiple undercut structures fabricated simultaneously, and a complex 3D geometry with intertwined channels.
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- Tao, Yi, et al.
(författare)
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Rapid synthesis of auxin via a new tryptophan-dependent pathway is required for shade avoidance in plants
- 2008
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Ingår i: Cell. - : Elsevier. - 0092-8674 .- 1097-4172. ; 133:1, s. 164-176
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Tidskriftsartikel (refereegranskat)abstract
- Plants grown at high densities perceive a decrease in the red to far-red (R:FR) ratio of incoming light, resulting from absorption of red light by canopy leaves and reflection of far-red light from neighboring plants. These changes in light quality trigger a series of responses known collectively as the shade avoidance syndrome. During shade avoidance, stems elongate at the expense of leaf and storage organ expansion, branching is inhibited, and flowering is accelerated. We identified several loci in Arabidopsis, mutations in which lead to plants defective in multiple shade avoidance responses. Here we describe TAA1, an aminotransferase, and show that TAA1 catalyzes the formation of indole-3-pyruvic acid (IPA) from L-tryptophan (L-Trp), the first step in a previously proposed, but uncharacterized, auxin biosynthetic pathway. This pathway is rapidly deployed to synthesize auxin at the high levels required to initiate the multiple changes in body plan associated with shade avoidance.
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- Wilhelmsen, Lars, 1932, et al.
(författare)
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SLCO1B1 variants and statin-induced myopathy--a genomewide study.
- 2008
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Ingår i: The New England journal of medicine. - 1533-4406. ; 359:8, s. 789-99
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Lowering low-density lipoprotein cholesterol with statin therapy results in substantial reductions in cardiovascular events, and larger reductions in cholesterol may produce larger benefits. In rare cases, myopathy occurs in association with statin therapy, especially when the statins are administered at higher doses and with certain other medications. METHODS: We carried out a genomewide association study using approximately 300,000 markers (and additional fine-mapping) in 85 subjects with definite or incipient myopathy and 90 controls, all of whom were taking 80 mg of simvastatin daily as part of a trial involving 12,000 participants. Replication was tested in a trial of 40 mg of simvastatin daily involving 20,000 participants. RESULTS: The genomewide scan yielded a single strong association of myopathy with the rs4363657 single-nucleotide polymorphism (SNP) located within SLCO1B1 on chromosome 12 (P=4x10(-9)). SLCO1B1 encodes the organic anion-transporting polypeptide OATP1B1, which has been shown to regulate the hepatic uptake of statins. The noncoding rs4363657 SNP was in nearly complete linkage disequilibrium with the nonsynonymous rs4149056 SNP (r(2)=0.97), which has been linked to statin metabolism. The prevalence of the rs4149056 C allele in the population was 15%. The odds ratio for myopathy was 4.5 (95% confidence interval [CI], 2.6 to 7.7) per copy of the C allele, and 16.9 (95% CI, 4.7 to 61.1) in CC as compared with TT homozygotes. More than 60% of these myopathy cases could be attributed to the C variant. The association of rs4149056 with myopathy was replicated in the trial of 40 mg of simvastatin daily, which also showed an association between rs4149056 and the cholesterol-lowering effects of simvastatin. No SNPs in any other region were clearly associated with myopathy. CONCLUSIONS: We have identified common variants in SLCO1B1 that are strongly associated with an increased risk of statin-induced myopathy. Genotyping these variants may help to achieve the benefits of statin therapy more safely and effectively. (Current Controlled Trials number, ISRCTN74348595.)
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