Despite decades of study, it is still unclear whether regional brain glucose uptake is lower in the cognitively healthy elderly. Whether regional brain uptake of ketones (β-hydroxybutyrate and acetoacetate [AcAc]), the main alternative brain fuel to glucose, changes with age is unknown. We used a sequential, dual tracer positron emission tomography (PET) protocol to quantify brain (18)F-fluorod...

Multi-Word Expressions Mean Ratings Modifier Head Ahorn|blatt ‘maple leaf’ maple leaf 5.64 5.71 Blatt|salat ‘green salad’ leaf salad 3.56 5.68 See|zunge ‘sole’ sea tongue 3.57 3.27 Löwen|zahn ‘dandelion’ lion tooth 2.10 2.23 Fliegen|pilz ‘toadstool’ fly/bow tie mushroom 1.93 6.55 Fleisch|wolf ‘meat chopper’ meat wolf 6.00 1.90 an|leuchten ‘illuminate’ anPRT illuminate – 5.95 auf|horchen ‘listen...

This paper proposes a resonant dc link in PWM ac chopper. This can solve the spike problems and also reduce the switching loss. The configuration and PWM pattern of the proposed technique are presented. The simulation results are used to confirm the theory. Keywords—PWM ac chopper and Resonant dc link.

Two mononuclear complexes, [Ni(acac)2].0.5CH3OH (1) and[Co(acac)2NO3].2H2O (2) (acac = pentane-2,4-dione), have been synthesized and characterized by single crystal X-ray analysis. Complex 1 crystallizes in the monoclinic space group P2(1)/c with a = 9.295(4), b = 11.450(5), c = 12.974(6) A, V = 1379.1(11) A(3),beta = 92.854(7), and Z = 4. Complex 2 crystallizes in the triclinic space group P(-...

this research develops a two-level model based on hypotheses, which concern relationships among role ambiguity, role conflict, job involvement and salesperson performance at individual level and collective sale self efficacy, customer orientation and competitive climate at sale unit level in iranian food industry. data was drawn from 482 sales people in 30 companies , using a 51-item self-repor...

This paper presents a chopper instrumentation amplifier for interfacing precision thermistor bridges. For high CMRR and DC gain, the amplifier employs a three-stage current-feedback topology with nested-Miller compensation. By chopping both the input and intermediate stages of the amplifier, a 1 mHz noise corner was achieved at an input-referred noise power spectral density (PSD) of 15 nV/ Hz. ...

The aim of the present study was to test the effect of the interval of serial sections in the tissue chopper on the number of isolated ovine preantral follicles. Best results were obtained when the ovarian fragments were cut in the tissue chopper at interval of 87.5µm (1592 preantral follicles per treatment). Histochemical analysis showed that the follicular morphology was preserved after mecha...

We have previously demonstrated that the acetylated low density lipoprotein (LDL), or scavenger, receptor expressed by rabbit smooth muscle cells (SMCs) is regulated. Phorbol ester treatment of the cells increased the number of scavenger receptors expressed and the metabolism of acetoacetylated (AcAc) LDL. The current studies examined the interaction of oxidized (Ox) LDL with the rabbit scaveng...

Reactions of the salicylaldehyde 4-phenylthiosemicarbazone (H(2)L) with selected vanadium(iv) and vanadium(v) precursors ([VO(acac)(2)], [VO(OAc)(2)], VOSO(4), [V(2)O(4)(acac)(2)]) were investigated under aerobic conditions in different alcohols (methanol, ethanol, propanol). In all examined cases mononuclear alkoxo vanadium(v) complexes [VOL(OR)] (1) (OR = OMe, OEt, OPr) were isolated as major...