cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
HIGH-GROWTH SUGARCANE AS AN ORGANIC CONTROL SYSTEM FOR WEEDS AND SOIL EROSION
Creators: name: Alexander, A.G.
name: Alexander, A.G.
Publisher: name: Unknown
Year: 1990
Subjects: Crop Production/Industries
Environmental Economics and Policy
Research and Development/Tech Change/Emerging Technologies

description: Certain Saccharum forms managed as high-growth systems produce multiple salable products in addition to sugar and fermentable solids. Aside from these are organic residues amounting to some 8-18 tons air-dry matter per acre year. Since 1987, studies in Puerto Rico have indicated highly favorable potentials of these residues as control systems for weeds and seedbed erosion. Chemical weed control, together with its costs, soil compaction and potential contamination, is deferred entirely beyond month 4 of the plant crop. Erosion of ratoon-crop seedbeds is essentially eliminated. Longer-term benefits are under investigation, including nutrient and organic matter reincorporation into soils, and deferment of conventional replanting and crop-rotation operations thru periodic reincorporation of an entire cane crop. Such residues also indicate promise as inexpensive compost for food-crop seedbeds. Aside from their technical and economic benefits, the production and on-farm application of such materials is consistent with environmental and conservation interests that are increasingly affecting U.S. agriculture. The work since 1987 is presented in overview with the aid of color slides.
RAPID MULTIPLICATION OF TANNIA (Xanthosoma sagittifolium Schott): AN ADVANCED TECHNIQUE FOR DEVELOPING COUNTRIES
Creators: name: McDonald, F.D.
name: Fletcher, R.E.
name: Muller, G.J.
name: McDonald, F.D.
name: Fletcher, R.E.
name: Muller, G.J.
Publisher: name: Unknown
Year: 1990
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: A rapid multiplication technique of tannia (tanier, cocoyam, Xanthosoma sagittifolium) is suggested for developing countries, in particular, the Windward Islands of Dominica, St. Lucia, St. Vincent and Grenada, where Pythium root rot or tannia rapid yellowing disease (TRYD) caused by Pythium myriotylum. has been seriously affecting tannia production. The rapid clonal multiplication of disease-free plant material is done through a two-phase production system - a combination of in vitro propagation and subsequent in vivo mini-setting. The Murashige and Skoog (1962) basal medium was used for meristem initiation and then amended by omitting benzylamino-purine (BAP), but including 0.1 mg/1 1-naphthaleneacetic acid (NAA) for prolific calli formation and plant regeneration. The technique described can improve tannia germplasm stock and at the same time provides a system that is practical and economically affordable to developing countries.
Discovery of a bright quasar without a massive host galaxy
Creators: name: Magain, Pierre
name: Letawe, Geraldine
name: Courbin, Frederic
name: Jablonka, Pascale
name: Jahnke, Knud
name: Wisotzki, Lutz
name: Meylan, Georges
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Quasars are thought to be powered by the infall of matter onto a supermassive black hole at the centre of massive galaxies. As the optical luminosity of quasars exceeds that of their host galaxy, disentangling the two components can be difficult. This led in the 1990's to the controversial claim of the discovery of 'naked' quasars. Since then, the connection between quasars and galaxies has been well established. Here we report on the observation of a quasar lying at the edge of a gas cloud, whose size is comparable to that of a small galaxy, but whose spectrum shows no evidence for stars. The gas cloud is excited by the quasar itself. If a host galaxy is present, it is at least six times fainter than would normally be expected for such a bright quasar. The quasar is interacting dynamically with a neighbouring galaxy - which matter might be feeding the black hole.
description: 5 figures, published in Nature
PRELIMINARY STUDIES ON in vitro PROPAGATION OF YAM BEAN (Pachyrhizus erosus (L.) Urban)
Creators: name: Forbes, W.C.
name: Duncan, E.J.
name: Forbes, W.C.
name: Duncan, E.J.
Publisher: name: Unknown
Year: 1990
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: The regeneration potential of Pachyrhizus erosus using single node culture has been investigated on Murashige and Skoog (1962) (MS) medium alone, and supplemented with each of Benzyladenine (BA), 2-isopentyladenine (2-ip), Kinetin (Kin), Zeatin and Adenine, at a 1 mg/1 concentration. The position effect of the nodes was investigated for hormone sensitivity. The basal medium must be supplemented with hormone for bud burst. Buds were stimulated by a range of cytokinins, but response was not dependent on nodal position. BA, Zeatin and Kinetin, however seem to induce multiple bud proliferation. Callus induction using leaf explants of different physiological ages was investigated on MS medium supplemented with 2, 4-dichlorophenoxyacetic acid (2,4-D); 3 indoleacetic acid (IAA) plus Kin; 1 naphthylacetic acid (NAA) plus Kin; and 2,4-D plus Kin at 1 mg/L concentration. The effect of light on callus initiation was noted. Callus was initiated on MS with 2,4-D plus Kin, also NAA plus Kin incubated in complete darkness. The quantity of callus varied with leaf age. Callus initiated with 2,4-D and Kinetin was placed on MS supplemented with BA using either fructose or glucose as the carbon/energy source, and incubated in light and dark environments. Chlorophyll formation was apparent in callus exposed to light, when the carbon source was fructose. Squash preparations of callus on BA supplemented medium indicated the presence of tracheids. Plantlet regeneration from callus has not yet been achieved.
Simulated Annealing for Volcano Muography
Creators: name: Vesga-Ramírez, A.
name: Sanabria-Gómez, J. D.
name: Sierra-Porta, D.
name: Arana-Salinas, L.
name: Asorey, H.
name: Kudryavtsev, V. A.
name: Calderón-Ardila, R.
name: Núñez, L. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geophysics (physics.geo-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Muography or muon radiography is a non-invasive emerging image technology relying on high energy atmospheric muons, which complements other standard geophysical tools to understand the Earth's subsurface. This work discusses a geophysical inversion methodology for volcanic muography, based on the Simulated Annealing algorithm, using a semi-empirical model of the muon flux to reach the volcano topography and a framework for the energy loss of muons in rock. The Metropolis-Simulated-Annealing algorithm starts from an 'observed' muon flux and obtains the best associated inner density distribution function inside a synthetic model of the Cerro Machin Volcano (Tolima-Colombia). The estimated initial density model was obtained with GEOMODELER, adapted to the volcano topography. We improved this model by including rock densities from samples taken from the crater, the dome and the areas associated with fumaroles. In this paper, we determined the minimum muon energy (a function of the arrival direction) needed to cross the volcanic building, the emerging integrated flux of muons, and the density profile inside a model of Cerro Machin. The present inversion correctly reconstructed the density differences inside the Machin, within a 1 percent error concerning our initial simulation model, giving a remarkable density contrast between the volcanic duct, the encasing rock and the fumaroles area.
Impacts of partial-retention harvesting with no buffer on the thermal regime of a headwater stream and its riparian zone
Creators: name: Guenther, Steven Martin
Publisher: name: University of British Columbia
Year: 2011

description: The temperatures of stream water and the stream bed influence biogeochemical processes and the growth and distribution of fish and macro-invertebrate species in streams. While numerous studies have examined the effects of various harvesting practices on stream temperature, none has estimated the effects on bed temperature, or conducted heat budget analysis before and after harvest to assess the mechanisms that control the magnitude of post-harvest stream heating. In this study, we analyzed data from a paired-catchment experiment involving both control and treatment streams and pre- and post-harvest monitoring. The partial retention harvesting resulted in removal of 50% of the basal area along 300 m of the channel in the treatment catchment. Stream temperature, bed temperature, riparian microclimate and stream hydrology were monitored in the treatment stream both before and after harvest. Daily maximum stream temperatures increased by up to over 7 °C during summer. Effects on winter temperatures were relatively small. Summer bed temperatures increased by as much as 6 °C, with greatest warming in areas of down-welling flow into the stream bed. Heat budgets were estimated for two reaches of a headwater stream before and after partial retention harvesting. Heat budget components responded in variable ways to the logging treatment depending on the reach, date, and weather. Incoming solar radiation was the largest input of energy into the stream following harvesting, while latent heat, hyporheic heat, groundwater heat, and bed heat exchanges tended to reduce the amount of daytime stream heating after harvest. These results will assist in understanding and predicting the spatial and temporal variability in stream temperature response to forest harvesting.
Surfactant-like Effect and Dissolution of Ultrathin Fe Films on Ag(001)
Creators: name: Terreni, S.
name: Cossaro, A.
name: Gonella, G.
name: Mattera, L.
name: Duo', L.
name: Ciccacci, F.
name: Cvetko, D.
name: Floreano, L.
name: Morgante, A.
name: Verdini, A.
name: Canepa, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The phase immiscibility and the excellent matching between Ag(001) and Fe(001) unit cells (mismatch 0.8 %) make Fe/Ag growth attractive in the field of low dimensionality magnetic systems. Intermixing could be drastically limited at deposition temperatures as low as 140-150 K. The film structural evolution induced by post-growth annealing presents many interesting aspects involving activated atomic exchange processes and affecting magnetic properties. Previous experiments, of He and low energy ion scattering on films deposited at 150 K, indicated the formation of a segregated Ag layer upon annealing at 550 K. Higher temperatures led to the embedding of Fe into the Ag matrix. In those experiments, information on sub-surface layers was attained by techniques mainly sensitive to the topmost layer. Here, systematic PED measurements, providing chemical selectivity and structural information for a depth of several layers, have been accompanied with a few XRD rod scans, yielding a better sensitivity to the buried interface and to the film long range order. The results of this paper allow a comparison with recent models enlightening the dissolution paths of an ultra thin metal film into a different metal, when both subsurface migration of the deposit and phase separation between substrate and deposit are favoured. The occurrence of a surfactant-like stage, in which a single layer of Ag covers the Fe film is demonstrated for films of 4-6 ML heated at 500-550 K. Evidence of a stage characterized by the formation of two Ag capping layers is also reported. As the annealing temperature was increased beyond 700 K, the surface layers closely resembled the structure of bare Ag(001) with the residual presence of subsurface Fe aggregates.
description: 4 pages, 3 figures
REGENERATION OF TRANSGENIC PAPAYA (Carica papaya) PLANTS
Creators: name: Fitch, M.M.M.
name: Manshardt, R.M.
name: Gonsalves, D.
name: Slightom, J.L.
name: Sanford, J.C.
name: Fitch, M.M.M.
name: Manshardt, R.M.
name: Gonsalves, D.
name: Slightom, J.L.
name: Sanford, J.C.
Publisher: name: Unknown
Year: 1990
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Stable transformation of papaya (Carica papaya L.) has been achieved following DNA delivery via high velocity microprojectiles. Three types of embryogenic tissues, including immature zygotic embryos, hypocotyl sections, and somatic embryos derived from both, were bombarded with tungsten particles carrying chimeric genes coding for NPT II, GUS, and the coat protein of a mild mutant strain HA 5-1 of papaya ringspot virus. All tissue types were cultured prior to and following particle bombardment on half-strength.MS medium supplemented with 10 mg/1-1 2,4-D, 400 mg/lrI glutamine, and 6% sucrose. Upon transfer to 2,4-D-free medium containing 150 mg/l-1 kanamycin sulfate, 12 isolates regenerated somatic embryos, and five of these produced leafy shoots six to nine months following bombardment. Tissues from 11 isolates were assayed for NPTII activity, and nine were positive. Five out of 12 isolates assayed for GUS expression were positive. Three isolates were positive for both NPTII and GUS.
Spatial correlations of vacuum fluctuations and the Casimir-Polder potential
Creators: name: Passante, R.
name: Persico, F.
name: Rizzuto, L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We calculate the Casimir-Polder intermolecular potential using an effective Hamiltonian recently introduced. We show that the potential can be expressed in terms of the dynamical polarizabilities of the two atoms and the equal-time spatial correlation of the electric field in the vacuum state. This gives support to an interesting physical model recently proposed in the literature, where the potential is obtained from the classical interaction between the instantaneous atomic dipoles induced and correlated by the vacuum fluctuations. Also, the results obtained suggest a more general validity of this intuitive model, for example when external boundaries or thermal fields are present.
description: 7 pages
Die glazialen Übertiefungen im Saalachgletscher-Gebiet zwischen Inzell und Königssee
Creators: name: Bader, Kurt
Publisher: name: Geozon Science Media
Year: 1981

description: Durch die Kombination der beiden geophysikalischen Methoden, Refraktionsseismik (Anregung durch Kleinsprengungen) und geoelektrischer Tiefensondierung ist es möglich, Form und Füllung glazialer Eintiefungen zu erkunden. Insbesondere kann mit Hilfe der seismischen Geschwindigkeiten die quartäre Füllung in einen nicht eisvorbelasteten und eisvorbelasteten Teil gegliedert werden und damit das Ausmaß des würmeiszeitlichen glazialen Tiefenschurfes dem der vorangegangenen Eiszeiten gegenübergestellt werden. Es zeigt sich erneut, daß sich die Würm-Gletscher meist nur in die Lockersedimente der Täler eintieften, im Gegensatz zu den Gletschern älterer Eiszeiten, die Übertiefungen bis zu 200 m in den Felsuntergrund schufen. Der Vorgang der Übertiefung wird auf drei Wirkungsgrößen zurückgeführt, die in Abhängigkeit voneinander das Ausmaß des Gesteinsabtrages am Talboden bestimmen: a) Die Eismächtigkeit, durch den Ubertiefungsvorgang eine sich selbst verstärkende Wirkungsgröße; b) die lokale Kriechgeschwindigkeit der Gletscher am Talboden, die stark von der Form und dem Verlauf der Täler abhängt, d. h. in Engstellen und Krümmungen der Täler sehr klein werden kann, und c) die Gesteinshärte, die z. B. bei gleicher Schurfarbeit zu unterschiedlichen Gesteinsabtragungen führen kann. Den pleistozänen Eismächtigkeiten entsprechend wurde die größte glaziale Übertiefung im Königssee - Obersee - Becken mit etwa 200 m gefunden. Jeweils kleinere Ubertiefungsbeträge weisen die folgenden Becken auf: Saalachtal vor Bad Reichenhall, Klausbachtal, Wimbachgries, und mit Übertiefungen <100 m die Becken von Bad Reichenhall, Hallthurm, Piding, Weißbachtal, Inzell.
description: research
Super Low Resolution RF Powered Accelerometers for Alerting on Hospitalized Patient Bed Exits
Creators: name: Chesser, Michael
name: Jayatilaka, Asangi
name: Visvanathan, Renuka
name: Fumeaux, Christophe
name: Sample, Alanson
name: Ranasinghe, Damith C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Falls have serious consequences and are prevalent in acute hospitals and nursing homes caring for older people. Most falls occur in bedrooms and near the bed. Technological interventions to mitigate the risk of falling aim to automatically monitor bed-exit events and subsequently alert healthcare personnel to provide timely supervisions. We observe that frequency-domain information related to patient activities exist predominantly in very low frequencies. Therefore, we recognise the potential to employ a low resolution acceleration sensing modality in contrast to powering and sensing with a conventional MEMS (Micro Electro Mechanical System) accelerometer. Consequently, we investigate a batteryless sensing modality with low cost wirelessly powered Radio Frequency Identification (RFID) technology with the potential for convenient integration into clothing, such as hospital gowns. We design and build a passive accelerometer-based RFID sensor embodiment---ID-Sensor---for our study. The sensor design allows deriving ultra low resolution acceleration data from the rate of change of unique RFID tag identifiers in accordance with the movement of a patient's upper body. We investigate two convolutional neural network architectures for learning from raw RFID-only data streams and compare performance with a traditional shallow classifier with engineered features. We evaluate performance with 23 hospitalized older patients. We demonstrate, for the first time and to the best of knowledge, that: i) the low resolution acceleration data embedded in the RF powered ID-Sensor data stream can provide a practicable method for activity recognition; and ii) highly discriminative features can be efficiently learned from the raw RFID-only data stream using a fully convolutional network architecture.
Mecynargus paetulus
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Mecynargus
Mecynargus paetulus

description: Mecynargus cf. paetulus (O. P.-Cambridge, 1875)
NEW DATA. — Valdieri: nearby Lago Soprano della Sella, Alpine prairies with rocky debris, 2300 m, 1.VIII.2011, 1♀.
CHOROTYPE. — EUR.
MACROHABITAT. — Alpine prairies.
 NOTES. — In the absence of males, the identification of this species remains doubtful. However, the presence of this species in the study area is plausible, given that Tanasevitch (2011) has reported M. paetulus in Piemonte (Valle Toggia, Verbania).
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 70, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
PRELIMINARY EXPERIMENTS ON ANDROGENESIS OF EGGPLANT (Solanum melongena L.) IN GUADELOUPE
Creators: name: Arnolin, R.
name: Ano, G.
name: Rubens, S.
name: Arnolin, R.
name: Ano, G.
name: Rubens, S.
Publisher: name: Unknown
Year: 1990
Subjects: Crop Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: The results of two experiments of androgenesis are reported. A large variability of Solanum melongena material is tested. After one month of culture a high percentage of anthers produce callus. A very limited production of embryos and regenerated plants is observed. There is a large difference between genotypes for both characters.
River flood risk in the Greater Mekong Subregion under different urban development scenarios. Master thesis Earth Sciences Lars Tierolf.
Creators: name: Tierolf, Lars
Publisher: name: figshare
Year: 2020
Subjects: subject: 49999 Earth Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Environmental Science

description: This study aimed to assess future flood risk in the Greater Mekong under two contrasting urban development scenarios. Urban land was mapped on a rural-urban gradient and land change was projected to the year 2035 in an urban expansion and intensification scenario. Flood risk curves were constructed for inundation levels with 10 to 500-year return periods. Results showed flood damage to increase in all countries of the study area in both scenarios. Optimal urban development pathways for mitigating future flood risk were shown to be context dependent. Urban development trajectories affected damage in flooding for all return periods, implicating that choices in urban development affect flood risk in severe events with low exceedance probabilities.
21-04-2020.This data repository is part of the master thesis 'River flood risk in the Greater Mekong Subregion under different urban development scenarios', authored by L. Tierolf as part of the master program Earth Sciences of the University of Amsterdam. The folder structure is as follows:
/ModelApplication/ Expansion/: Contains all CLUMondo model settings used for projecting urban expansion scenarios. Intensification/ : Contains all models data used for projecting urban intensification scenarios. index.txt : index of factor maps./Floodrisk/ SettlementSamples/ /Cambodia, /Laos, /Myanmar, /Thailand, /Vietnam: Contains KML files of 10 random points per settlement systems per country. AssessmentBuiltEnv.xlsx : Datasheet with results of the assessment of the built environment
 Calculations/ / SampleData/ : Containing sample data of flood calculations for constructing risk curves in Cambodia /FloodCalculations.html : R Markup file of R script applied in calculations for Cambodia.
Thermal infrared observations of the Hayabusa spacecraft target asteroid 25143 Itokawa
Creators: name: Mueller, T. G.
name: Sekiguchi, T.
name: Kaasalainen, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We obtained N- and Q-band observations of the Apollo-type asteroid 25143 Itokawa during its close Earth approach in July 2004 with TIMMI2 at the ESO 3.6 m telescope. Our photometric measurement, in combination with already published data, allowed us to derive a radiometric effective diameter of 0.32+/-0.03 km and an albedo of 0.19 +0.11/-0.03 through a thermophysical model. This effective diameter corresponds to a slightly asymmetrical and flattened ellipsoid of the approximate size of 520(+/-50) x 270(+/-30) x 230(+/-20) m, based on the Kaasalainen et al. (2005) shape model. Our studies show that the thermal observations lead to size estimates which are about 15% smaller than the radar results (Ostro et al. 2005), slightly outside the stated radar uncertainties of +/-10%. We determined a rather high thermal inertia of 750 Jm-2s-0.5K-1. This is an indication for a bare rock dominated surface, a thick dust regolith can be excluded as well as a metallic surface. From our data we constructed a 10.0 micrometer thermal lightcurve which is nicely matched in amplitude and phase by the shape and spin vector solution in combination with our TPM description. The assumed S-type bulk density in combination with radiometric size lead to a total mass estimate of 4.5 +2.0/-1.8 x 10^10 kg.
description: 9 pages, 7 figures, accepted for publication by A&A 29/Aug/2005
Geomorphologic and Lithologic Evidence for an expanded Mountain Ice Sheet on Mount Kenya during the Early Quarternary
Creators: name: Mahaney, William C.
Publisher: name: Geozon Science Media
Year: 1991

description: Die Analyse und Interpretation glazialer Formen der Prä-Brunhes Periode (> 0,73 — 0,79 my) im Einzugsgebiet des Flusses Nithi an der Ostflanke des Mount Kenya läßt typische Merkmale der Dynamik altquartärer Vereisungen erkennen. Die glaziale Serie setzt sich aus mehreren Folgen von Grund- und Endmoränen, subglazialen Füllungen von Gletscherspalten, Schmelzwasserablagerungen und äolischen Sedimenten zusammen. Hinzu kommen geringmächtige Lagen subaquatisch abgelagerten Moränenmaterials. Die Formensequenz repräsentiert zwei ausgeprägte Vereisungsphasen, von denen die ältere (Gorges Vereisung) eine größere Ausdehnung erreicht als die jüngere (Lake Ellis Vereisung). Die Gorges Vereisung begann mit der Ablagerung von Moränenmaterial unter Wasser über verwitterten Tuffen gefolgt von kuppiger Endmoräne, subglazialen Spaltenfüllungen und äolischen Ablagerungen. Zu Beginn der Lake Ellis Vereisung wurde End- und Grundmoränenmaterial sowie Schmelzwasserablagerungen über verwitterten Tuffen sedimentiert. Danach wurden äolische Sedimente gebildet. Die paläoklimatischen und glazialmorphologischen Wechselwirkungen können durch die Untersuchung der Sedimente und deren Verwitterungsgrad sowie der speziellen Formen ermittelt werden. Nahe dem Eisrand der Gorges Vereisung wurde Material in einem aquatischen, subglazialen Milieu abgelagert. Die überdeckende Moräne kann als basaler Geschiebelehm angesehen werden. Kuppige Endmoränen repräsentieren eine spätere Phase der Stagnation des Eises während dieser Periode, an deren Ende es schließlich zur Ablagerung von Abtaumoränen und geringmächtigem Geschiebelehm kam. Subglaziale Spaltenfüllungen in der Nachbarschaft der kuppigen Endmoräne geben Hinweise auf einen statischen Eisrand am Ende der Gorges Vereisung.
description: research
EVALUATION OF TRIPLOID AND HEXAPLOID DERIVATIVES FROM Pennisetum glaucum x P. purpureum CROSSES AT THE BEEF RESEARCH UNIT, UNIVERSITY OF FLORIDA
Creators: name: Schank, S.C.
name: Smith, R.L.
name: Seib, J.
name: Schank, S.C.
name: Smith, R.L.
name: Seib, J.
Publisher: name: Unknown
Year: 1990
Subjects: Crop Production/Industries
Livestock Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: Cv. 4Mott' dwarf napiergrass has unusually high forage quality for a tropical grass (Sollenberger et al., 1988). Mott has been hybridized with pearl millet, and four of the best triploid F, progeny were selected for comparison with Mott and other non-dwarf Pennisetums. This five year study compared the dry matter yield of seven lines of Pennisetum. and also measured in vitro organic matter digestibility (IVOMD), crude protein (CP) and neutral detergent fiber (NDF). The chromosome number of a triploid Fj^ hybrid was doubled and three of the hexaploid progeny were evaluated at the Beef Research Unit in 1988 and 1989. In general, the hybrids showed similar IVOMD to Mott, but had increased leafiness and lower fiber than the tall napiergrass varieties.
On condition numbers of the total least squares problem with linear equality constraint
Creators: name: Liu, Qiaohua
name: Jia, Zhigang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F35

description: This paper is devoted to condition numbers of the total least squares problem with linear equality constraint (TLSE). With novel limit techniques, closed formulae for normwise, mixed and componentwise condition numbers of the TLSE problem are derived. Computable expressions and upper bounds for these condition numbers are also given to avoid the costly Kronecker product-based operations. The results unify the ones for the TLS problem. For TLSE problems with equilibratory input data, numerical experiments illustrate that normwise condition number-based estimate is sharp to evaluate the forward error of the solution, while for sparse and badly scaled matrices, mixed and componentwise condition numbers-based estimates are much tighter.
description: 19 pages
Neottiura bimaculata
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Neottiura
Neottiura bimaculata

description: Neottiura bimaculata (Linnaeus, 1767)
NEW DATA. — Entracque: Tetti Violin, grassland with bushes, 900-1100 m, 10.VI.2011, 1♂ (collected within the PIT Summer School 2011).
CHOROTYPE. — OLA.
MACROHABITAT. — Shrublands.
NOTES. — New record for Piemonte.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 64, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
Superconformal boundary conditions for the WZW model
Creators: name: Albertsson, Cecilia
name: Lindstrom, Ulf
name: Zabzine, Maxim
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review the most general, local, superconformal boundary conditions for the two-dimensional N=1 and N=2 non-linear sigma models, and analyse them for the N=1 and N=2 supersymmetric WZW models. We find that the gluing map between the left and right affine currents is generalised in a very specific way as compared to the constant Lie algebra automorphisms that are known.
description: 15 pages, LaTeX, v2: typos corrected, published version
Klimaschwankungen im Pliozän von Wallensen (Hils)
Creators: name: Altehenger, A.
Publisher: name: Geozon Science Media
Year: 1958

description: Die pliozäne Braunkohle von Wallensen im Hils (Nordwestdeutschland) ist mit über 70 m Mächtigkeit im Tagebau aufgeschlossen. Der Abschnitt des Pliozäns, der als Bildungszeit der Kohle erfaßt werden kann, dürfte mehrere Jahrhunderttausende betragen. Für die Frequenzkurven klimatisch empfindlicher Vertreter der Wallenser Pliozänflora ergeben sich bei pollenanalytischer Untersuchung der Kohle langfristige Schwankungen. Dadurch werden klimatische Änderungen während der Bildungszeit der Kohle sichtbar, die zwar nicht in ihrer Intensität, wohl aber in ihrem zeitlichen Verlauf mit den pleistozänen Klimaschwankungen des Postgünzglazials vergleichbar sind.
description: research
Assessing and Minimizing Collisions in Satellite Mega-Constellations
Creators: name: Reiland, Nathan
name: Rosengren, Aaron J.
name: Malhotra, Renu
name: Bombardelli, Claudio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We aim to provide satellite operators and researchers with an efficient means for evaluating and mitigating collision risk during the design process of mega-constellations. We first establish a baseline for evaluating various techniques for close-encounter prediction and collision-probability calculation (Hoots et al. 1984, Gronchi 2005, JeongAhn and Malhotra 2015) by carrying out brute-force numerical simulations and using a sequence of filters to greatly reduce the computational expense of the algorithm. Next, we estimate conjunction events in the orbital environment following the anticipated deployments of the OneWeb LEO and SpaceX Starlink mega-constellations. As a final step, we investigate Minimum Space Occupancy (MiSO) orbits (Bombardelli et al. 2018), a generalization of the well-known frozen orbits that account for the perturbed-Keplerian dynamics of the Earth-Moon-Sun-satellite system. We evaluate the ability of MiSO configurations of the proposed mega-constellations, as suggested by Bombardelli et al. 2018, to reduce the risk of endogenous (intra-constellation) collisions. The results indicate that the adoption of the MiSO orbital configuration can significantly reduce risk with nearly indistinguishable adjustments to the nominal orbital elements of the constellation satellites.
description: 32 pages, 19 figures; submitted for publication in Adv. Space Res.; comments welcome
Agyneta nigripes
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Agyneta
Agyneta nigripes

description: Agyneta nigripes (Simon, 1884)
LITERATURE. — Calloni (1889).
CHOROTYPE. — PAL.
MACROHABITAT. — not specified.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 66, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
Non-thyroidal illness syndrome and hypothyroidism in ischemic heart disease population: Systematic review and meta-analysis - Supplemental materials
Creators: name: Chang, Chun-Yu
name: Chien, Yung-Jiun
name: Po-Chen Lin
name: Chien-Sheng Chen
name: Wu, Meng-Yu
Publisher: name: figshare
Year: 2020
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: The supplemental tables, figures, and detailed search strategy of the manuscript entitled "Non-thyroidal illness syndrome and hypothyroidism in ischemic heart disease population: Systematic review and meta-analysis."
Centromerus serratus
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Centromerus
Centromerus serratus

description: Centromerus serratus (O. P.-Cambridge, 1875)
NEW DATA. — Vernante: Palanfrè, beech forest, 1500 m, 13.X.2011, 1♂; same locality, 1♀.
CHOROTYPE. — EUR.
MACROHABITAT. — Broadleaved woods.
NOTES. — New record for the study area.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 67, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
Angular dependence of the Wigner time delay upon tunnel ionization of $H_{2}$
Creators: name: Trabert, Daniel
name: Brennecke, Simon
name: Fehre, Kilian
name: Anders, Nils
name: Geyer, Angelina
name: Grundmann, Sven
name: Schöffler, Markus S.
name: Schmidt, Lothar Ph. H.
name: Jahnke, Till
name: Dörner, Reinhard
name: Kunitski, Maksim
name: Eckart, Sebastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: More than 100 years after its discovery and its explanation in the energy domain, the duration of the photoelectric effect is still heavily studied. The emission time of a photoelectron can be quantified by the Wigner time delay. Experiments addressing this time delay for single-photon ionization became feasible during the last 10 years. A missing piece, which has not been studied, so far, is the Wigner time delay for strong-field ionization of molecules. Here we show experimental data on the Wigner time delay for tunnel ionization of $H_{2}$ molecules and demonstrate its dependence on the emission direction of the electron with respect to the molecular axis. We find, that the observed changes in the Wigner time delay can be quantitatively explained by elongated/shortened travel paths of the electrons that are due to spatial shifts of the electron's birth position after tunneling. This introduces an intuitive perspective towards the Wigner time delay in strong-field ionization.
description: 17 pages, 6 figures
Shear band formation in granular media as a variational problem
Creators: name: Unger, T.
name: Torok, J.
name: Kertesz, J.
name: Wolf, D. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Strain in sheared dense granular material is often localized in a narrow region called shear band. Recent experiments in a modified Couette cell provided localized shear flow in the bulk away from the confining walls. The non-trivial shape of the shear band was measured as the function of the cell geometry. First we present a geometric argument for narrow shear bands which connects the function of their surface position with the shape in the bulk. Assuming a simple dissipation mechanism we show that the principle of minimum dissipation of energy provides a good description of the shape function. Furthermore, we discuss the possibility and behavior of shear bands which are detached from the free surface and are entirely covered in the bulk.
description: 4 pages, 5 figures; minor changes, typos and journal-ref added
Electron sin resonance (ESR) dating of Quaternary materials
Creators: name: Schellmann, Gerhard
name: Beerten, Koen
name: Radtke, Ulrich
Publisher: name: Geozon Science Media
Year: 2008

description: ESR hat sich im letzten Jahrzehnt bei der Datierung verschiedenster littoraler Ablagerungen (Korallenriffterassen, Strandwallsysteme, Dünen) als effizientes Datierungswerkzeug etabliert. Verbesserungen in der Bestimmung der jährlichen Dosisleistung (D’) und ein neu entwickelter Ansatz zur Bestimmung der Äquivalent Dosis (DE – Dmax Verfahren) haben die Präzision der ESR-Datierung sowohl an holozänen und pleistozänen Korallen als auch an marinen und terrestrischen Molluskenschalen verbessert. Dies wurde durch den Vergleich mit anderen numerischen Datierungsverfahren wie Radiokohlenstoff und TIMS-Uranserien- Analyse (TIMS 230Th/234U) unterstützt. Der Vergleich mit letzterer Methode steht im Fokus dieses Artikels. Die mit der ESR-Methode verbundenen Ungenauigkeiten bei der Datierung holozäner Korallen liegt in der Größenordnung der Variabilität von 14C-Altern, die durch den marinen Reservoireffekt bedingt ist. Die Datierung pleistozäner Korallen erlaubt die Differenzierung der wichtigen marinen Isotopenstadien (MIS) 5, 7, 9,11 und 13 sowie der Untereinheiten 5e3/2 und 5e1, 5c und 5a1 und 5a2. Der durchschnittliche Fehler bei der Datierung von Korallen liegt zwischen 5 bis 8%. Weiterhin hat die Datierung mariner und terrestrischer Mollusken mittels ESR viel versprechende Resultate geliefert, die eine Differenzierung der Interglaziale MIS 1, 5, 7 und 9 ermöglichen, bei einem Fehler von 10-15%. Die ESR Datierung von Quarz ist eine weitere vielversprechende Datierungstechnik für quartäre und sogar neogene geologische Formationen. Das Vorkommen von Quarz in vulkanischen Gesteinen, Tephren, Störungen und Sedimenten (thermisch beeinflusst und unbeeinflusst) ermöglicht die zeitliche Bestimmung des letzten Zeitpunkts vor der Erhitzung, Störung oder der Aussetzung von Sonnenlicht. Obwohl durch einige experimentelle Ergebnisse angezweifelt, ist die ESR Datierung von Quarz die einzige Möglichkeit Altersdaten älterer Ablagerungen zu liefern. ESR wurde auch bei einer Vielzahl anderer Materialien angewendet, wie zum Beispiel Foraminiferen, Speleothemen, Travertinen, Kalkkrusten und Zahnschmelz. Die gebräuchlichste und zuverlässigste Anwendung ist die ESR-Datierung von Mammutstoßzähnen. Im Zusammenspiel mit der Laser-Ablation Uranserien Datierung ist ESR eine wichtige Methode zur Altersbestimmung archäologischer Fundstätten jenseits der Bestimmungsgrenzen der Radiokohlenstoffmethode bis in den Bereich von 200 bis 300 ka.
description: research
Theridion varians Hahn 1833
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Theridion
Theridion varians

description: Theridion varians Hahn, 1833
NEW DATA. — Entracque: Tetti Violin, banks of a small stream with bushes, 900-1100 m, 10.VI.2011, 1♀ (collected within the PIT Summer School 2011); Vernante: Palanfrè, Gias del Chiot, beech forest, 1550 m, 22.VI.2009, 1♂ (beating tray); Palanfrè, Pianard, Garbella, sparse wood, grassland, 1600 m, 14.VI.2010, 1♀.
CHOROTYPE. — OLA.
MACROHABITAT. — Alpine grasslands, broadleaved woods, riparian habitats.
NOTES. — New record for the study area.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 66, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
$L$-values for conductor $32$
Creators: name: Moerman, Boaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F67, (Primary) 11F03, 11F20, 14H52, 33E05 (Secondary)

description: In recent years, Rogers and Zudilin developed a method to write $L$-values attached to elliptic curves as periods. In order to apply this method to a broader collection of $L$-values, we study Eisenstein series and determine their Fourier series at cusps. Subsequently, we write the $L$-values of an elliptic curve of conductor 32 as an integral of Eisenstein series and evaluate the value at $k>1$ explicitly as a period. As a side result, we give simple integral expressions for the generating functions of $L(E,k)$ when even (or odd) $k$ runs over positive integers.
description: 25 pages
Micrargus subaequalis
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Micrargus
Micrargus subaequalis

description: Micrargus subaequalis (Westring, 1851)
NEW DATA. — Valdieri: southern slope of Monte Bourel, Vallone della Meris, Sant’Anna di Valdieri, Alpine prairies with rocky debris, 1500-2300 m, 1-31.VIII.2011 (pitfall traps), 3♂.
CHOROTYPE. — ASE.
MACROHABITAT. — Alpine prairies.
NOTES. — New record for Piemonte.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 70, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
Ein ungewöhnlich großer Schädel vom Auerochsen (Bos primigenius) aus dem letzten Interglazial von Groß-Rohrheim bei Darmstadt
Creators: name: Koenigswald, Wighart Von
name: Menger, Frank
Publisher: name: Geozon Science Media
Year: 2002

description: Der bislang größte Schädel von Bos primigenius wurde in den Ablagerungen des Oberrheins von Groß-Rohrheim bei Darmstadt gefunden. Stratigraphisch wird er mit allergrößter Wahrscheinlichkeit dem letzten Interglazial zugeordnet. Die Maße übersteigen alle Messwerte, die von pleistozänen und holozänen Auerochsen Mitteleuropas bekannt sind. Vergleichbare Maße gibt es am ehesten aus dem Pleistozän von Italien. Das mag ein Hinweis auf besonders günstige ökologische Bedingungen sein, zumal der Auerochse in Groß-Rohrheim zusammen mit zahlreichen Resten von Hippopotamus amphibius gefunden wurde.
description: research
Lepthyphantes notabilis Kulczynski 1887
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Lepthyphantes
Lepthyphantes notabilis

description: Lepthyphantes notabilis Kulczyn’ski, 1887
CHOROTYPE. — SEU.
MACROHABITAT. — caves.
 LITERATURE. — Isaia et al. (2011).
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 70, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
Ein weit verbreiteter Hiatus in spätglazialen Seesedimenten: Mögliche Ursachen für Fehlinterpretationen von Pollendiagrammen und Hinweis auf klimatisch verursachte Seespiegelbewegungen
Creators: name: Usinger, Hartmut
Publisher: name: Geozon Science Media
Year: 1981

description: Spätglaziale Seeablagerungen von verschiedenen Lokalitäten (hauptsächlich Schleswig-Holstein; Dänemark) lassen einen übergangslosen Wechsel von Alleröd- zu Dryas-3-Sedimenten erkennen. Das Fehlen von Übergangssedimenten weist auf einen Hiatus. Erosionserscheinungen an der Oberfläche der Alleröd-Sedimente bestätigen die Vermutung. Pollenanalytische Untersuchungen zeigen, daß der Hiatus bedeutende Teile von Alleröd und Dryas-3 umfassen kann, und daß dies nicht in plötzlichen Veränderungen von Pollenhäufigkeiten im Diagramm zum Ausdruck kommen muß. Im Zuge der Hiatus-Bildung kann aufgearbeitetes Alleröd-Material in Dryas-3-Sediment gelangen und dessen Pollenflora entstellen. Die Ursache der Hiatus-Entstehung dürfte in einer vorübergehenden Seespiegelsenkung und/oder anderen klimatisch bedingten Phänomenen zu suchen sein. Aus Beobachtungen anderer Autoren ist zu schließen, daß der Hiatus weit über das Gebiet bisheriger Nachweise hinaus erwartet werden muß.
description: research
Non-Commutative GUTs, Standard Model and C,P,T properties from Seiberg-Witten map
Creators: name: Aschieri, Paolo
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Noncommutative generalizations of Yang-Mills theories using Seiberg-Witten map are in general not unique. We study these ambiguities and see that SO(10) GUT, at first order in the noncommutativity parameter θ, is unique and therefore is a truly unified theory, while SU(5) is not. We then present the noncommutative Standard Model compatible with SO(10) GUT. We next study the reality, hermiticity and C,P,T properties of the Seiberg-Witten map and of these noncommutative actions at all orders in θ. This allows to compare the Standard Model discussed in [5] with the present GUT inspired one.
description: 9 pages. Presented at the Balkan Workshop 2003, Vrnjacka Banja, 29.8-2.9.2003 and at the 9th Adriatic Meeting, Dubrovnik, 4-14.9.2003
Decoherence as a Probe of Coherent Quantum Dynamics
Creators: name: d'Arcy, Michael B.
name: Godun, Rachel M.
name: Summy, Gil S.
name: Guarneri, Italo
name: Wimberger, Sandro
name: Fishman, Shmuel
name: Buchleitner, Andreas
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The effect of decoherence, induced by spontaneous emission, on the dynamics of cold atoms periodically kicked by an optical lattice is experimentally and theoretically studied. Ideally, the mean energy growth is essentially unaffected by weak decoherence, but the resonant momentum distributions are fundamentally altered. It is shown that experiments are inevitably sensitive to certain nontrivial features of these distributions, in a way that explains the puzzle of the observed enhancement of resonances by decoherence [Phys. Rev. Lett. 87, 074102 (2001)]. This clarifies both the nature of the coherent evolution, and the way in which decoherence disrupts it.
description: 4 pages, 2 figures, submitted to Phys. Rev. E as a Brief Report. New version contains minor clarifying modifications to previous version, plus an additional reference [17]
Optical trapping of absorbing particles
Creators: name: Rubinsztein-Dunlop, H.
name: Nieminen, T. A.
name: Friese, M. E. J.
name: Heckenberg, N. R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Radiation pressure forces in a focussed laser beam can be used to trap microscopic absorbing particles against a substrate. Calculations based on momentum transfer considerations show that stable trapping occurs before the beam waist, and that trapping is more effective with doughnut beams. Such doughnut beams can transfer angular momentum leading to rotation of the trapped particles. Energy is also transferred, which can result in heating of the particles to temperatures above the boiling point of the surrounding medium.
description: 13 pages, 11 figures