A nanofabricated, monolithic, path-separated electron interferometer

We report a self-aligned, monolithic electron interferometer, consisting of two 45 nm thick silicon layers separated by 20 $\mu$m. This interferometer was fabricated from a single crystal silicon cantilever on a transmission electron microscope grid by gallium focused ion-beam milling. Using this interferometer, we demonstrate beam path-separation, and obtain interference fringes in a Mach-Zehnder geometry, in an unmodified 200 kV transmission electron microscope. The fringes have a period of 0.32 nm, which corresponds to the $\left[\bar{1}\bar{1}1\right]$ lattice planes of silicon, and a maximum contrast of 15 %. This design can potentially be scaled to millimeter-scale, and used in electron holography. It can also be applied to perform fundamental physics experiments, such as interaction-free measurement with electrons.Comment: 21 pages (including supplementary info), 8 figures; Corrected typos, added references for introduction and conclusion, changed ordering of paragraphs of Discussion, results unchange

Соціально-педагогічна діяльність щодо формування психолого-педагогічної культури батьків в умовах ЗНЗ

A procedure is developed to quantify and improve the signal-to-noise ratio (SNR) of Magnetic Resonance images. The image SNR is quanti ed using the correlation function of two independent acquisitions of an image. To test the performance of the quantification, SNR measurement data are fitted to theoretically expected curves. The proposed correlation technique is also used to improve the SNR by estimating the amplitude of the signal spectrum. The technique is applied to a set of MR images and its performance, in terms of gain in SNR, contrast-to-noise ratio (CNR) and resolution loss, is compared to that of classical noise filters. The SNR as well as the CNR is found to be improved signi cantly with minor loss of resolution. Finally, it is shown that the correlation technique can be implemented in a highly efficient way in almost any acquisition procedure of

Pertendonckstraat te Broechem (gem. Ranst). Archeologische vooronderzoek door middel van proefsleuven

Dit rapport werd ingediend bij het agentschap samen met een aantal afzonderlijke digitale bijlagen. Een aantal van deze bijlagen zijn niet inbegrepen in dit pdf document en zijn niet online beschikbaar. Sommige bijlagen (grondplannen, fotos, spoorbeschrijvingen, enz.) kunnen van belang zijn voor een betere lezing en interpretatie van dit rapport. Indien u deze bijlagen wenst te raadplegen kan u daarvoor contact opnemen met: [email protected]

The impact of the bass drum on human dance movement

The present study aims to gain better insight into the connection between music and dance by examining the dynamic effects of the bass drum on a dancing audience in a club-like environment. One hundred adult participants moved freely in groups of five to a musical sequence that comprised six songs. Each song consisted of one section that was repeated three times, each time with a different sound pressure level of the bass drum. Hip and head movements were recorded using motion capture and motion sensing. The study demonstrates that people modify their bodily behavior according to the dynamic level of the bass drum when moving to contemporary dance music in a social context. Participants moved more actively and displayed a higher degree of tempo entrainment as the sound pressure level of the bass drum increased. These results indicate that the prominence of the bass drum in contemporary dance music serves not merely as a stylistic element; indeed, it has a strong influence on dancing itself

M & L Jaargang 21/5

Ann Verdonck, Piet Swimberghe en Veerle De Houwer Een edel en verfijnd genot. Polychromie in de woonkamer van woning Billiet te Brugge. [Noble and refined delight. A polychrome design for the living room of the Billiet house in Bruges.]Roger Deneef, Lydie Mondelaers en Susanne Van Aerschot-Van Haeverbeeck Het Sint-Kamillusgesticht te Bierbeek, monument voor een levensbeschouwing. [Saint-Camilllus Psychiatric Asylum at Bierbeek, monument to an ideology.]Lode De Clercq Vondsten van muurschilderingen in de Sint-Jacobskerk in Antwerpen. [Wall paintings discovered in Saint-Jacobs Church in Antwerp.]Linda Van Dyck en Marie-Hélène Ghisdal Een vroeg-15de-eeuwse muurschildering met de voorstelling van de man van smarten in de kathedraal van Antwerpen. Prachtige fragmenten van een minutieus uitgevoerde schildering.Dirk Van Eenhooge Middeleeuwse Brugse huizen: bouwhistorisch onderzoek in de huizen in Sint-Jacobs en Den Ancker. [Medieval Houses in Bruges (2): In Sint-Jacobs and Den Ancker.]Summar

The genetic architecture of the human cerebral cortex

The cerebral cortex underlies our complex cognitive capabilities, yet little is known about the specific genetic loci that influence human cortical structure. To identify genetic variants that affect cortical structure, we conducted a genome-wide association meta-analysis of brain magnetic resonance imaging data from 51,665 individuals. We analyzed the surface area and average thickness of the whole cortex and 34 regions with known functional specializations. We identified 199 significant loci and found significant enrichment for loci influencing total surface area within regulatory elements that are active during prenatal cortical development, supporting the radial unit hypothesis. Loci that affect regional surface area cluster near genes in Wnt signaling pathways, which influence progenitor expansion and areal identity. Variation in cortical structure is genetically correlated with cognitive function, Parkinson's disease, insomnia, depression, neuroticism, and attention deficit hyperactivity disorder