5,140 research outputs found

    Quantitative complementarity between local and nonlocal character of quantum states in a three-qubit system

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    Local or nonlocal character of quantum states can be quantified and is subject to various bounds that can be formulated as complementarity relations. Here, we investigate the local vs. nonlocal character of pure three-qubit states by a four-way interferometer. The complete entanglement in the system can be measured as the entanglement of a specific qubit with the subsystem consisting of the other two qubits. The quantitative complementarity relations are verified experimentally in an NMR quantum information processor.Comment: 10 pages, 10 figure

    Binding between the neural cell adhesion molecules axonin-1 and Nr- CAM/Bravo is involved in neuron-glia interaction

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    Neural cell adhesion molecules of the immunoglobulin superfamily mediate cellular interactions via homophilic binding to identical molecules and heterophilic binding to other family members or structurally unrelated cell-surface glycoproteins. Here we report on an interaction between axonin-1 and Nr-CAM/Bravo. In search for novel ligands of axonin-1, fluorescent polystyrene microspheres conjugated with axonin-1 were found to bind to peripheral glial cells from dorsal root ganglia. By antibody blockage experiments an axonin-1 receptor on the glial cells was identified as Nr-CAM. The specificity of the interaction was confirmed with binding studies using purified axonin-1 and Nr-CAM. In cultures of dissociated dorsal root ganglia antibodies against axonin-1 and Nr-CAM perturbed the formation of contacts between neurites and peripheral glial cells. Together, these results implicate a binding between axonin-1 of the neuritic and Nr-CAM of the glial cell membrane in the early phase of axon ensheathment in the peripheral nervous system

    Micro-PIXE (Particle-Induced X-Ray Emission Analysis) Applications in Minerals Research

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    The versatility of the PIXE method with microbeams of protons as a non-destructive, in-situ probe for trace element analysis in the geosciences has been demonstrated in an ever increasing number of cases. While in most applications the method can be considered as derivative or as an extension of electron microprobe methodology, features unique to the proton microprobe enable new approaches to hitherto intractable problems of analysis. An appropriate niche has been established in igneous mineralogy and petrology, with important implications both in the basic geosciences as well as mineral industry applications, particularly in the diamond exploration industry. This paper reviews recent advances and discusses the advantages and limitations of current micro-PIXE applications in the geosciences in view of other competing and complimentary methods

    Formation of hydrogen impurity states in silicon and insulators at low implantation energies

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    The formation of hydrogen-like muonium (Mu) has been studied as a function of implantation energy in intrinsic Si, thin films of condensed van der Waals gases (N2, Ne, Ar, Xe), fused and crystalline quartz and sapphire. By varying the initial energy of positive muons (mu+) between 1 and 30 keV the number of electron-hole pairs generated in the ionization track of the mu+ can be tuned between a few and several thousand. The results show the strong suppression of the formation of those Mu states that depend on the availability of excess electrons. This indicates, that the role of H-impurity states in determining electric properties of semiconductors and insulators depends on the way how atomic H is introduced into the material.Comment: 4 pages, 4 enscapulated postscript figures, uses revtex4 twocolumn style to be published in Physical Review Letter

    Combination of Tempeh and Carrot Prevent Atherosclerosis Wistar Rat: Indicated by Increase of Hdl and Total Antioxidant, Decrease Ldl, F2-isoprostan, and Il-6

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    Coronary heart disease (CHD) is the leading cause of death, either in developed and developing countries. The disease is stimulated by the present of atherosclerosis. This study aims to investigate supplementation of combined tempeh M-2 and carrot to prevent atherosclerosis wistar rat by increases HDL and TAC, decreases LDL, F2-Isoprostan, and IL-6. This was a true experimental study with the factorial completely randomized post-test only control group design. variables such as KN (standard feeding / pellets (50 g / kg bw / day), KP: pig lubrication: pellets (1: 9) (50 g / kg bw / day), T : lubrication pig: pellets (1: 9) with tempeh M -2 (20 g / kg bw / day), W: pig lubrication: pellets (1: 9) with carrots (20 g / kg bw / day), and TW: pig lubrication: pellets (1: 9) with tempeh M-2 (20 g / kg bw / day), and carrots (20 g / kg bw / day). Dependent variables in this study are serum HDL,serum TAC, LDL serum, urine F2-Isoprostan, and plasma IL-6 (with Elisa Method). Data were analyzed using the F test (two-way ANOVA), followed by LSD test. Descriptive research was also conducted in this study in order to find out the change of aortic histopathologic. The highest average levels of HDL, TAC contained on TW, which respectively amounted 68.640 ± 0.50 mg / dl, 1.454 ± 0.01 nM / mL. It showed highly significant differences (p<0.01) in the various treatments. TW treatment showed highly significant interaction effect (p<0.01) were observed for all parameters except for HDL. Average levels of LDL, F2- Isoprostan, and IL-6 lowest in the treatment TW, which respectively amounted 20.718 ± 1.33 mg / dl, 0.720 ± 0.065 ng / dl, 35.328 ± 1.000 pg/dl, showed highly significant differences (p<0.01) in the various treatments. It can be concluded that supplementation with a combination of tempeh M-2 with carrots give the best effect, can increases HDL and TAC, and can decreases LDL, F2-Isoprostan, IL-6 significantly, and may change the hystopathology structure of aorta from endotel dysfunction to become normal
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