1,183 research outputs found
The relative timing of trunk muscle activation is retained in response to unanticipated postural-perturbations during acute low back pain
Get PDFThe purpose of this study was to assess the activation of the erector spinae (ES) and external oblique (EO) in response to unanticipated, bi-directional postural perturbations before and after the induction of acute low back pain (LBP) in healthy individuals. An experimental session consisted of a baseline, control, and an acute LBP condition. For the control and acute LBP condition, isotonic or hypertonic saline (HS), respectively, was injected into the right ES muscle. In each condition, participants stood on a moveable platform during which 32 randomized postural perturbations (8 repetitions of 4 perturbation types: 8 cm anterior slides, 8 cm posterior slides, 10° anterior tilts, and 10° posterior tilts) with varying inter-perturbation time intervals were performed over a period of 4-5 min. Bilateral surface electromyography (EMG) was recorded from the ES and EO in addition to subjective pain records. During the acute LBP condition: (1) the onset time of the ES and EO was delayed for the forward and backward sliding perturbations (P < 0.05); (2) EMG amplitude was reduced bilaterally for all perturbations (P < 0.05); (3) the order of activation and interval between the onset times of the ES and EO were unaltered and (4) ES, but not EO, activity was adjusted to account for the directional differences between the perturbations. This study revealed that re-establishment of posture and balance was a result of the individuals' ability to rapidly modulate ES with respect to EO activity and that the bi-directional postural responses, although shifted in time and amplitude, retained temporal features in the presence of acute LBP.</p
Die Rolle der Familie beim Erwerb komplexer sprachlicher Fähigkeiten in der Sekundarstufe 1
No full textKrah A, Quasthoff U, Heller V, Wild E, Hollmann J, Otterpohl N. Die Rolle der Familie beim Erwerb komplexer sprachlicher Fähigkeiten in der Sekundarstufe 1. In: Redder A, Weinert S, eds. Sprachförderung und Sprachdiagnostik. Interdisziplinäre Perspektiven. Münster: Waxmann; 2013: 68-88
Mündliches und schriftliches Argumentieren in der Sekundarstufe I: Können Eltern ihre Kinder beim Erwerb dieser Schlüsselkompetenzen unterstützen?
No full textQuasthoff U, Wild E, Domenech M, et al. Mündliches und schriftliches Argumentieren in der Sekundarstufe I: Können Eltern ihre Kinder beim Erwerb dieser Schlüsselkompetenzen unterstützen? In: Redder A, Naumann J, Tracy R, eds. Forschungsinitiative Sprachdiagnostik und Sprachförderung - Ergebnisse. Münster: Waxmann; 2015: 207-233
Geology of a portion of the southeastern San Jacinto Mountains, Riverside County, California
No full textThesis (M.A.) Geological Sciences.\ud
Plate 1; Geologic map of the southeastern San Jacinto Mountains, Riverside County, California, with scale 1:20,000; polyconic projection. Plate 2; Localities of thin-sectioned specimens and chemically analyzed samples. Plate 3; Orientation diagrams of lineations in metasedimentary and cataclastic rocks of the southeastern San Jacinto Mountains. Plate 4; Geologic cross section, Southeastern San Jacinto Mountains, Riverside County, California. Plate 5; Stratigraphic sections, southeastern San Jacinto Mountains, Riverside County, California, in back pocket.No abstract included
Even redder than we knew: Color and AV evolution up to z = 2.5 from JWST/NIRCam photometry
Get PDFAims. JWST/NIRCam provides rest-frame near-IR photometry of galaxies up to z=-2.5 with exquisite depth and accuracy. This affords us an unprecedented view of the evolution of the UV/optical/near-IR color distribution and its interpretation in terms of the evolving dust attenuation, A V. Methods. We used the value-added data products (photometric redshift, stellar mass, rest-frame U-V and V-J colors, and A V) provided by the public DAWN JWST Archive. These data products derive from fitting the spectral energy distributions obtained from multiple NIRCam imaging surveys, augmented with preexisting HST imaging data. Our sample consists of a stellar-mass-complete sample of ≈28 000M ∗ > -10 9 M ⊙ galaxies in the redshift range 0.5 < z < -2.5. Results. The V-J color distribution of star-forming galaxies evolves strongly, in particular for high-mass galaxies (M ∗ > 3 × -10 10 M ⊙), which have a pronounced tail of very red galaxies reaching V-J > -2.5 at z > -1.5 that does not exist at z < -1. Such red V-J can only be explained by dust attenuation, with typical values for M ∗ ≈ 10 11 M ⊙ galaxies in the range A V ≈ 1.5-3.5 at z ≈ 2. This redshift evolution went largely unnoticed before. Today, however, photometric redshift estimates for the reddest (V-J > -2.5), most attenuated galaxies have markedly improved thanks to the new, precise photometry, which is in much better agreement with the 25 available spectroscopic redshifts for such galaxies. The reddest population readily stands out as the independently identified population of galaxies detected at submillimeter wavelengths. Despite the increased attenuation, U-V colors across the entire mass range are slightly bluer at higher z. A well-defined and tight color sequence exists at redshifts 0.5 < z < 2.5 for M ∗ > 3 × 10 10 M ⊙ quiescent galaxies, in both U-V and V-J, but in V-J it is bluer rather than redder compared to star-forming galaxies. In conclusion, whereas the rest-frame UV-optical color distribution evolves remarkably little from z = 0.5 to z=2.5, the rest-frame optical/near-IR color distribution evolves strongly, primarily due to a very substantial increase with redshift in dust attenuation for massive galaxies.</p
Mette redder dig der redder liv
No full textEn grundlæggende retorisk manøvre i Frederiksens tale er, at hun vil have landets befolkning (som hun kalder ''danskerne''; et ord, der egentlig udgrænser en del folk her i landet) til at gøre, hvad hun anser for rigtigt, ved at hylde og anerkende, at ''vi'' allerede gør det. ''Anerkendende ledelse'' - et fortærsket begreb med en sand kerne
RNase J mutant phenotypes.
No full text<p>Cultures grown over night, were diluted 10<sup>5</sup> and 10<sup>6</sup> times, whereupon 5 µl were spotted on either MH, RH, LB, or LB+Mg agar plates with 10 mg/l uracil, and incubated at the indicated temperatures until the WT colonies reached an approximately similar size. LB+Mg denotes LB plates supplemented with 5 mM MgCl<sub>2</sub>. Growth of a strain was then scored by the size (or absence) of visible colonies compared to the WT colonies. A) Previously published strains. B) RNase J mutants generated in this study. A and B were spotted on the same plates.</p
R- And J-Band Photometry Of Comets 2P/Encke And 9P/Tempel 1
No full textNear-simultaneous R- and J-band photometric measurements of the short-period Comets 2P/Encke and the Deep Impact mission target 9P/Tempel 1 were obtained. The resulting R - J colors are + 0.82 ± 0.08 mag and + 1.46 ± 0.13 mag for Encke and Tempel 1, respectively. Tempel 1\u27s color is redder than the solar R - J color index of +0.76. The Tempel 1 observations directly detected the nucleus while the Encke observations likely suffered from coma contamination. © 2005 Elsevier Inc. All rights reserved
R- and J-band photometry of Comets 2P/Encke and 9P/Tempel 1
No full textNear-simultaneous R- and J-band photometric measurements of the short-period Comets 2P/Encke and the Deep Impact mission target 9P/Tempel 1 were obtained. The resulting R-J colors are +0.82 +/- 0.08 mag and +1.46 +/- 0.13 mag for Encke and Tempel 1, respectively. Tempel 1\u27s color is redder than the solar R-J color index of +0.76. The Tempel 1 observations directly detected the nucleus while the Encke observations likely suffered from coma contamination. (c) 2005 Elsevier Inc. All rights reserved
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