Virtual tissue alignment and cutting plane definition--a new method to obtain optimal longitudinal histological sections.

Histomorphometric evaluation of the buccal aspects of periodontal tissues in rodents requires reproducible alignment of maxillae and highly precise sections containing central sections of buccal roots; this is a cumbersome and technically sensitive process due to the small specimen size. The aim of the present report is to describe and analyze a method to transfer virtual sections of micro-computer tomographic (CT)-generated image stacks to the microtome for undecalcified histological processing and to describe the anatomy of the periodontium in rat molars. A total of 84 undecalcified sections of all buccal roots of seven untreated rats was analyzed. The accuracy of section coordinate transfer from virtual micro-CT slice to the histological slice, right-left side differences and the measurement error for linear and angular measurements on micro-CT and on histological micrographs were calculated using the Bland-Altman method, interclass correlation coefficient and the method of moments estimator. Also, manual alignment of the micro-CT-scanned rat maxilla was compared with multiplanar computer-reconstructed alignment. The supra alveolar rat anatomy is rather similar to human anatomy, whereas the alveolar bone is of compact type and the keratinized gingival epithelium bends apical to join the junctional epithelium. The high methodological standardization presented herein ensures retrieval of histological slices with excellent display of anatomical microstructures, in a reproducible manner, minimizes random errors, and thereby may contribute to the reduction of number of animals needed.

Stammbuch der Frankfurter Juden : geschichtliche Mitteilungen über die Frankfurter jüdischen Familien von 1349 - 1849 ; nebst einem Plane der Judengasse

von Alexander Dietz

Which side of the focal plane are you on?

Defocus blur is an indicator for the depth structure of a scene. However, given a single input image from a conventional camera one cannot distinguish between blurred objects lying in front or behind the focal plane, as they may be subject to exactly the same amount of blur. In this paper we address this limitation by exploiting coded apertures. Previous work in this area focuses on setups where the scene is placed either entirely in front or entirely behind the focal plane. We demonstrate that asymmetric apertures result in unique blurs for all distances from the camera. To exploit asymmetric apertures we propose an algorithm that can unambiguously estimate scene depth and texture from a single input image. One of the main advantages of our method is that, within the same depth range, we can work with less blurred data than in other methods. The technique is tested on both synthetic and real images.

Measurement of event-plane correlations in √s_NN=2.76 TeV lead-lead collisions with the ATLAS detector

A measurement of event-plane correlations involving two or three event planes of different order is presented as a function of centrality for 7 μb −1 Pb+Pb collision data at √s NN =2.76 TeV, recorded by the ATLAS experiment at the Large Hadron Collider. Fourteen correlators are measured using a standard event-plane method and a scalar-product method, and the latter method is found to give a systematically larger correlation signal. Several different trends in the centrality dependence of these correlators are observed. These trends are not reproduced by predictions based on the Glauber model, which includes only the correlations from the collision geometry in the initial state. Calculations that include the final-state collective dynamics are able to describe qualitatively, and in some cases also quantitatively, the centrality dependence of the measured correlators. These observations suggest that both the fluctuations in the initial geometry and the nonlinear mixing between different harmonics in the final state are important for creating these correlations in momentum space.

Blackfolds, plane waves and minimal surfaces

Minimal surfaces in Euclidean space provide examples of possible non-compact horizon geometries and topologies in asymptotically flat space-time. On the other hand, the existence of limiting surfaces in the space-time provides a simple mechanism for making these configurations compact. Limiting surfaces appear naturally in a given space-time by making minimal surfaces rotate but they are also inherent to plane wave or de Sitter space-times in which case minimal surfaces can be static and compact. We use the blackfold approach in order to scan for possible black hole horizon geometries and topologies in asymptotically flat, plane wave and de Sitter space-times. In the process we uncover several new configurations, such as black helicoids and catenoids, some of which have an asymptotically flat counterpart. In particular, we find that the ultraspinning regime of singly-spinning Myers-Perry black holes, described in terms of the simplest minimal surface (the plane), can be obtained as a limit of a black helicoid, suggesting that these two families of black holes are connected. We also show that minimal surfaces embedded in spheres rather than Euclidean space can be used to construct static compact horizons in asymptotically de Sitter space-times.

Die Schlacht bei Kolding, am 23sten April 1849 : Nach den besten und ausführlichsten Quellen: dienstlichen Berichten, Mittheilungen von Augenzeugen etc., bearbeitet und herausgegeben ; mit einem Plane des Schlachtfeldes

Welsch (Projektbearbeiter): Beschreibung der Schlacht von Kolding (22./23. April 1849): Sieg der schleswig-holsteinischen Armee unter Bonin über die Dänen unter Bülow

Die Schlacht bei Schleswig, am 23sten April 1848 : nach den besten und ausführlichsten Quellen: dienstlichen Berichten, Mittheilungen von Augenzeugen etc., bearbeitet und herausgegeben ; mit einem Plane des Schlachtfeldes

Welsch (Projektbearbeiter): Darstellung der Schlacht bei Schleswig: Sieg der von preußischen und anderen Bundestruppen unterstützten schleswig-holsteinischen Armee über die Dänen (23. April 1848)

Der Kampf in Dresden im Mai 1849 : mit einem Plane ; mit besonderer Rücksicht auf die Mitwirkung der Preußischen Truppen geschildert und militairisch beleuchtet

Boberach: Die Darstellung berücksichtigt besonders die neuen Erfahrungen mit dem Straßen- und Häuserkampf, die Eisenbahnen als Truppenbeförderungsmittel, die Erprobung des Zündnadelgewehrs

Die Erlebnisse der Schweizerkompagnie in Venedig : ein Beitrag zur Geschichte des venetianischen Freiheitskampfes ; mit einem Plane von Venedig und den Lagunen

Boberach: Schweizer Freiwillige aus einem Dorf zwischen Thurgau und Zürich haben am Kampf gegen die österreichische Herrschaft im Juni 1848 teilgenommen

Die Berliner Märztage: vom militairischen Standpunkte aus geschildert : mit einem Plane

Boberach: Der Rückzug der Truppen war militärisch nicht nötig, die Ausgangslage für eine Unterdrückung der revolutionären Bewegung günstig, aber Arnim und Bodelschwingh haben den König falsch beraten. - Welsch (Projektbearbeiter): Verfaßt vom preußischen Obersten K. G. Schulz im Auftrag des Generals v. Prittwitz [Hachtmann, R.: Berlin 1848; 1997, S. 54, Anm. 86]. Prittwitz war im März 1848 Kommandeur des Berliner Gardekorps und leitete den Kampf gegen die Berliner Aufständischen

Comparison of Mixed and Kinematic Uniform Boundary Conditions in Homogenized Elasticity of Femoral Trabecular Bone Using Microfinite Element Analyses

Mechanical properties of human trabecular bone play an important role in age-related bone fragility and implant stability. Micro-finite element (microFE) analysis allows computing the apparent elastic properties of trabecular bone biopsies, but the results depend on the type of applied boundary conditions (BCs). In this study, 167 femoral trabecular cubic biopsies with a side length of 5.3 mm were analyzed using microFE analysis to compare their stiffness systematically with kinematic uniform boundary conditions (KUBCs) and periodicity-compatible mixed uniform boundary conditions (PMUBCs). The obtained elastic constants were then used in the volume fraction and fabric-based orthotropic Zysset-Curnier model to identify their respective model parameters. As expected, PMUBCs lead to more compliant apparent elastic properties than KUBCs, especially in shear. The differences in stiffness decreased with bone volume fraction and mean intercept length. Unlike KUBCs, PMUBCs were sensitive to heterogeneity of the biopsies. The Zysset-Curnier model predicted apparent elastic constants successfully in both cases with adjusted coefficients of determination of 0.986 for KUBCs and 0.975 for PMUBCs. The role of these boundary conditions in finite element analyses of whole bones and bone-implant systems will need to be investigated in future work.

Versuch einer Darstellung der allgemeinen Geschichte, nach dem Plane des seligen Herrn Professors Franz Joseph von Mumelter

von Franz de Paula Michael Reisser

Prag und seine Umgebungen : Mit einem Anhange, einem Plane der Stadt, und vier Ansichten, dann einer Postkarte und einem Briefposten-Tableau durch Böhmen

von C. E. Rainold