1,221 research outputs found
Parergodrilus heideri Reisinger
No full textParergodrilus heideri Reisinger Parergodrilus heideri Reisinger, 1925 Ecology: T Distribution: PA Habitat: S Comments: Found under leaf-litter, in moss, etc. Additional references: Reisinger (1960), Karling (1958), Graefe (1977), Schwank (1981), Purschke (1987), Rota (1997, 1998), Rota et al. (2001), Jördens et al. (2004)Published as part of Glasby, Christopher J., Timm, Tarmo, Muir, Alexander I. & Gil, João, 2009, Catalogue of non-marine Polychaeta (Annelida) of the World, pp. 1-52 in Zootaxa 2070 on page 37, DOI: 10.5281/zenodo.18708
Particle–wave discrimination in Poisson spot experiments
No full textMatter–wave interferometry has been used extensively over the last few years to demonstrate the quantum-mechanical wave nature of increasingly larger and more massive particles. We have recently suggested the use of the historical Poisson spot setup to test the diffraction properties of larger objects. In this paper, we present the results of a classical particle van der Waals (vdW) force model for a Poisson spot experimental setup and compare these to Fresnel diffraction calculations with a vdW phase term. We include the effect of disc-edge roughness in both models. Calculations are performed with D2 and with C70 using realistic parameters. We find that the sensitivity of the on-axis interference/focus spot to disc-edge roughness is very different in the two cases. We conclude that by measuring the intensity on the optical axis as a function of disc-edge roughness, it can be determined whether the objects behave as de Broglie waves or classical particles. The scaling of the Poisson spot experiment to larger molecular masses is, however, not as favorable as in the case of nearfield light-grating-based interferometers. Instead, we discuss the possibility of studying the Casimir–Polder potential using the Poisson spot setup
Archivortex silvestris Reisinger 1924
No full textArchivortex silvestris Reisinger, 1924 (Figs. 1 D–E) New localities. Kanzelkügel, Graz, Austria (47 °06’ 49 ”N; 15 ° 23 ’ 11 ”E), nine specimens in moist forest soil (26 August 2011). Kreuzberg, Weyer, Austria (47 ° 51 ’ 36 ”N; 14 ° 39 ’09”E), one specimen in humus of mixed forest (29 August 2011). Known distribution. In the vicinity of Graz, Austria. Common and abundant in humus of forest soils (Reisinger 1924); Pendling bei Kufstein, Austria (An der Lan 1963). Material. Ten specimens studied alive, three of which were sagitally sectioned (UH nos. VI. 4.13 –VI. 4.15). Descriptive notes and remarks. This species was originally described by Reisinger (1924) and was only later illustrated by Bresslau (1933: fig. 259) and Reisinger (1954: fig 6). The study of our specimens revealed some more morphological details. Animals about 0.2 mm long. The anterior end with glands (Fig. 1 E: frg), particularly obvious in live animals. Rhabdites are lacking, but the outer part of the epidermis is completely covered with small structures that were originally described as pseudorhabdites (Reisinger 1924). Paired protonephridiopores (Fig. 1 E: pp) open just behind the pharynx doliiformis (Fig. 1 D, 1 E: ph), which is situated in the anterior 20 % of the body. The gonopore is situated at ± 75 % and opens into a small genital atrium. Paired, round testes (Fig. 1 E: t) lie at ± 65 % of the body. An inner circular and an outer longitudinal muscle layer surround the 13 µm-long copulatory organ (Fig. 1 E: co). This copulatory organ contains a seminal vesicle, a prostate vesicle and a slightly-bent, somewhat sclerotized ejaculatory duct. The prostate vesicle is filled with eosinophilic secretion, although the glands producing this secretion were not observed. The female system is very simple. A single vitellarium (Fig. 1 E: vi) embeds the ovary (Fig. 1 E: ov) forming an ovo-vitellarium, which is connected to the genital atrium by a female duct. We refrain from designating a neotype because the sectioned specimens are of too poor quality.Published as part of Houben, Albrecht M., Schwank, Peter, Proesmans, Willem, Bert, Wim & Artois, Tom J., 2015, Notes on some enigmatic taxa of limnoterrestrial rhabdocoels, with the description of two new species, pp. 83-92 in Zootaxa 4040 (1) on pages 90-91, DOI: 10.11646/zootaxa.4040.1.7, http://zenodo.org/record/28999
Adj Isten minden jót... Reisinger család
No full texthttp://www.lib.unideb.huDebreceni Egyetem Egyetemi és Nemzeti KönyvtárSétáló cívis mátkapár, a férfi mézeskaláccsal, a lány virágcsokorral. Alul felirat: Adj Isten minden jót, Áldj meg itt minden lakót. Legyen itten újévkor, Azután is mindenkor Pénz, posztó, paripa, Széna, szalma, szalonna, Bor, búza, békesség, Finom, fürge feleség. Reisinger-család. Jobbra fent T B monogram.metszetT.B
Interview with Composer Allen Shawn | by E. Reisinger
No full textAllen Shawn © 2018 by Cynthia Locklin Recently, I had the great pleasure of talking to Allen Shawn. I had reached out to him in the context of my research on Benny Goodman, as he had received a composition commission from Goodman in 1983, resulting in a double concerto for clarinet, cello, and orchestra. Apart from that, Shawn has been working with numerous other performers throughout his career and his work is strongly influenced by such collaborations. The subsequent interview presents a t..
Krumbachia subterranea Reisinger 1933
No full textKrumbachia subterranea Reisinger, 1933 Fig. 8A–C Material examined Neotype GERMANY • 1 spec., studied alive and sagittally sectioned; Hessen; 50°46′30″ N, 09°30′18″ E; 9 Aug. 2011; A.M. Houben and W. Proesmans leg.; submersed meadow at the banks of the Breitenbach creek; neotype no. 823; HU. Reference material GERMANY • 1 spec., live observations; same collection data as for neotype. Description The examined specimens are around 2.5 mm long. The body is slender with a somewhat pointy anterior end and rounded posteriorly (see Fig. 8A). Adenal rhabdite glands occur just behind the brain (Fig. 8A: ar). Paired protonephridiopores (pp) are positioned ventrally, very near to the mouth (Fig. 8A: pp). A rosulate pharynx (Fig. 8A: ph) is situated just behind the centre of the body. The gonopore (Fig. 8A–C: gp) is located at ±75% of the body and connected to the gonoduct (Fig. 8B– C: gd). The gonoduct is surrounded by an inner circular and outer longitudinal muscle layer, and lined with a ciliated, nuclear epithelium resembling the epidermis. The genital atrium (Fig. 8A–C: ga) is surrounded by a similar musculature and lined with a high, nucleated epithelium. On both lateral sides of the genital atrium, a group of proliferating cells (Fig. 8C: pc) is found. A large group of eosinophilic glands is situated posterior to the genital atrium and probably enters this atrium anteriorly (not drawn on the reconstruction). The large, egg-shaped testes (Fig. 8A: t) lie anterior to the pharynx and ventral to the vitellaria (Fig. 8A– B: vi). Paired vasa deferentia unite to form a single vas deferens (Fig. 8A–C: vde) just before entering the copulatory bulbus (Fig. 8A: co). Two layers of spiral muscles surround the long, curved copulatory organ, which bends up to 80° towards its distal end. The copulatory organ bears an intracapsular seminal vesicle (Fig. 8B–C: vs) and a strongly sclerotised ejaculatory duct (Fig. 8B–C: de). Several coarsegrained, extracapsular eosinophilic glands (Fig. 8A–C: gg) enter the copulatory organ at the proximal end. Their secretion is lightly basophilic when entering the copulatory organ, however, it becomes strongly eosinophilic in the ejaculatory duct. A cone-shaped bursa (Fig. 8A–C: bu), surrounded by strong inner circular and outer longitudinal muscles, lies next to the copulatory organ and opens into the genital atrium. The vitellaria extend from the region of the rhabdite glands to the posterior end (Fig. 8A: vi). The vitelloducts (Fig. 8C: vd) fuse just before opening into the female duct (Fig. 8C: fd). Furthermore, this duct is surrounded by a layer of circular muscles and receives the oviduct, a seminal receptacle (Fig. 8A–C: rs), and the female glands (Fig. 8C: fg). The seminal receptacle is provided with a short stalk, which also is surrounded by circular muscles. Discussion See the general discussion on the genus Krumbachia Reisinger, 1924. Previously known distribution Ruhr, Germany (Reisinger 1933), riparian forest near Schlitz, Germany (Schwank 1981). Common species in Europe (Lanfranchi & Papi 1978).Published as part of Houben, Albrecht M., Monnens, Marlies, Proesmans, Willem & Artois, Tom J., 2022, Limnoterrestrial ' Typhloplanidae' (Rhabdocoela, Platyhelminthes), with the description of four new species and a new genus, pp. 70-102 in European Journal of Taxonomy 798 on pages 90-92, DOI: 10.5852/ejt.2022.798.1671, http://zenodo.org/record/632304
Focusing of Molecular Beams for the Development of New Tools for Nanoscience and Nanotechnology
No full textProtoplanella simplex Reisinger 1924
No full text<i>Protoplanella simplex</i> Reisinger, 1924 <p>Fig. 11</p> Material examined <p> <b>Neotype</b> GERMANY • 1 spec., live observations and sagittal sections; Kordel; 49°49′24″ N, 06°38′06″ E; 24 Jul. 2011; A.M. Houben and W. Proesmans leg.; mosses growing on a wall; neotype no. 825; HU.</p> Other material <p>GERMANY • 1 spec., serially sectioned; same collection data as for neotype; XIV.3.11; HU • 2 specs, live observations, one of which serially sectioned; Bavaria, Oberau; 07°33′33″ N, 11°06′57″ E; 13 Jul. 2011; A.M. Houben and W. Proesmans leg.; forest litter; XIV.3.12; HU • 5 specs, live observations, three of which serially sectioned; Lanaken; 50°56′03″ N; 05°39′36″ E; 27 Jul. 2011; A.M. Houben and W. Proesmans leg.; mosses at the forest edge; XIV.3.13–XIV.3.15; HU • 4 specs, live observations, two of which serially sectioned; Lanaken, National Park ‘ Hoge Kempen’; 50°56′02″ N; 05°39′38″ E; 27 Jul. 2011; A.M. Houben and W. Proesmans leg.; moist forest soil; XIV.3.16–XIV.3.17; HU.</p> Description <p>The studied specimens are about 0.8 mm long. The anterior and posterior body ends are rounded (Fig. 11A). Rhabdite glands are present and arranged into two groups behind the brain (Fig. 11A: ar); the rhabdites themselves extend forward in two anastomosing tracts. Dermal rhabdites were not observed. The paired protonephridiopores (Fig. 11A: pp) open laterally and somewhat caudal to the rosulate pharynx (Fig. 11A, C: ph), which is situated just behind the middle of the body.</p> <p>The gonopore (Fig. 11A–C: gp) is located at ±80% of the body and connected to a genital atrium (Fig. 11A–C: ga). The genital atrium is surrounded by an inner circular and outer longitudinal muscle layer.</p> <p>The small, round testes (Fig. 11A–B: t) lie posterior to the pharynx and ventral to the vitellaria (Fig. 11A–C: vi). Both vasa deferentia (Fig. 11B–C: vde) enter the copulatory organ (Fig. 11A: co) separately from the lateral side. This 22 µm long, oval-shaped copulatory organ is surrounded by two layers of spiral muscles and contains an intracapsular seminal vesicle (Fig. 11B–C: vs) with a low, nucleated epithelium and an ejaculatory duct (Fig. 11B–C: de), which is surrounded by two layers of spiral muscles. Extracapsular, eosinophilic prostate glands (Fig. 11A–C: gg) open laterally into the copulatory organ. A male duct (Fig. 11C: md) with the same musculature as the genital atrium connects the copulatory organ to the latter.</p> <p>The paired vitellaria extend from 25% of the body to the posterior end where they fuse via a broad anastomosis. A single ovary (Fig. 11A–C: ov) is closely associated with one of the vitellaria forming an ovovitellarium. The female duct (Fig. 11C: fd) is surrounded by the same musculature as the genital atrium and receives a club-shaped seminal receptacle (Fig. 11A–C: rs) and ovovitelloduct at its proximal end. Fine-grained, eosinophilic glands (Fig. 11C: fg) surround and enter the female duct.</p> Discussion <p> See the general discussion on the genus <i>Protoplanella</i>.</p> Remarks <p>Intensive surveys at the type locality yielded no specimens. The specimens from Oberau, Bavaria, Germany, which is relatively close to the original type locality in Graz, Austria, are of poor quality. Therefore, a specimen from Kordel, Germany was designated neotype, since all diagnostic features are exactly as described by Reisinger (1924).</p> Previously known distribution <p>In the vicinity of Graz, Austria in forest humus (Reisinger 1924, 1954; An der Lan & Franz 1954; An der Lan 1963), on the Faroe Islands (Steinböck 1931); near Poznań, Poland, in moss and litter (Kolasa 1974).</p> <p> <b> General discussion on <i>Protoplanella</i></b> </p> <p> As mentioned by Van Steenkiste <i>et al.</i> (2011), the identification of <i>Protoplanella simplex</i> is challenging. New material found during several sampling trips showed a need for type material to unravel the morphological differences between all known descriptions of <i>P. simplex</i>. Reisinger (1924) originally described animals with round testes; vasa deferentia that open separately from the lateral side of the copulatory organ; a vitellarium and ovovitellarium connected to each other over a broad anastomosis; and a seminal receptacle that opens into the proximal part of the female duct. Luther (1963) described a specimen with elongated testes; a bursa that could be a seminal receptacle near the male copulatory organ; and, judging from his illustration, most probably paired ovovitellaria. Also, Van Steenkiste <i>et al.</i> (2011) describe a sack-like protrusion at the genital atrium (which was not mentioned by Reisinger 1924); a female bursa (which was called a seminal receptacle by Reisinger 1924) containing remnants of sperm; and their illustration shows the vasa deferentia uniting while entering the copulatory organ at the proximal side.</p> <p> The descriptions of Luther (1963) and Van Steenkiste <i>et al.</i> (2011) differ substantially from that of Reisinger (1924) and, therefore, we consider them not to refer to representatives of <i>P. simplex</i>. Here, we consider these descriptions as referring to a new species: <i>Protoplanella leiae</i> Houben, Proesmans & Artois sp. nov. Moreover, the description of Luther (1963) indicates some, albeit smaller, differences with that of Van Steenkiste <i>et al.</i> (2011). The illustration made by Luther (1963) is not detailed and only made from live specimens. Since Luther’s drawings are in general more detailed, we assume this illustration was based on sub-ideal circumstances, which yielded a quickly made sketch. For now, we consider the specimens described by Luther (1963) and Van Steenkiste <i>et al.</i> (2011) to be members of the same species since differences are small and, in the case of Luther, not based on thoroughly studied material.</p>Published as part of <i>Houben, Albrecht M., Monnens, Marlies, Proesmans, Willem & Artois, Tom J., 2022, Limnoterrestrial ' Typhloplanidae' (Rhabdocoela, Platyhelminthes), with the description of four new species and a new genus, pp. 70-102 in European Journal of Taxonomy 798</i> on pages 98-99, DOI: 10.5852/ejt.2022.798.1671, <a href="http://zenodo.org/record/6323040">http://zenodo.org/record/6323040</a>
Stormwater Pond Management: What You Need to Know about Aeration
No full textThis new 6-page document is intended to provide Floridians and their communities with information on a specific management practice in stormwater ponds: the use of fountains and other aeration approaches. These practices may provide opportunities both to improve water quality within the pond and protect downstream water quality. Specifically, this document gives basic information on fountains and the pros and cons of fountain installation and use. In addition, we provide information for pond managers or community decision makers on how to best manage ponds for effective pollutant removal in the pond and downstream water quality protection. Written by Samantha T. Howley, Steven P. Hohman, and Alexander J. Reisinger, and published by the UF/IFAS Department of Soil and Water Sciences.
https://edis.ifas.ufl.edu/ss69
Brightness and virtual source size of a supersonic deuterium beam
No full textSupersonic beams have numerous applications in research fields ranging from spectroscopy with nanodroplets
to surface science and matter-wave microscopy. Thus, measurement and prediction of their properties is of
considerable interest. In this paper we present measurements of the virtual-source size and its brightness, as well as the terminal speed and terminal speed ratio of a supersonic deuterium (D2) beam. The speed distribution
data were measured with time-of-flight experiments and Fresnel zone-plate imaging was used to measure virtual
source size. The point-spread function of the zone plate was simulated based on the measured wavelength
distribution and used to extract the width of the virtual source and its brightness from the focus measurement.
The experiments were carried out with a 10-μm-diameter nozzle and a source temperature of T0 = 310 K in the
pressure range p0 = 3–171 bars and for T0 = 106 K in the pressure range p0 = 3–131 bars.We found that using
deuterium as opposed to helium results in a virtual source that is about a factor 2 brighter under similar stagnation
conditions. A comparison between the measured data and the predictions from a theoretical model based on
the Boltzmann equation, which explicitly include the coupling between translational and rotational degrees of
freedom as well as the real-gas properties of D2, resulted in good correspondence for the two different interaction
potentials we tried. A careful comparison with the experimental results shows that the potential by Buck et al.
[J. Chem. Phys. 78, 4439 (1983)] is moderately better than the Lennard-Jones potential at describing the expansion
dynamics
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