273 research outputs found
Trochastrites Stradner 1961
No full textGenus Trochastrites Stradner, 1961 urn:lsid:zoobank.org:act: 9DFE30A4-E474-4861-8FDD-DE1A1491F8D4 TYPE SPECIES. — Discoaster bramlettei Martini, 1958 by subsequent designation of Stradner (1961).Published as part of Steurbaut, Etienne & Nolf, Dirk, 2021, The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes - reassessment of the boundary criterion for the base- Lutetian GSSP, pp. 311-363 in Geodiversitas 43 (11) on page 347, DOI: 10.5252/geodiversitas2021v43a11, http://zenodo.org/record/489110
Lanternithus Stradner 1962
No full textGenus Lanternithus Stradner, 1962 TYPE SPECIES. — Lanternithus minutus Stradner, 1962 by original designation.Published as part of Steurbaut, Etienne & Nolf, Dirk, 2021, The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes - reassessment of the boundary criterion for the base- Lutetian GSSP, pp. 311-363 in Geodiversitas 43 (11) on page 342, DOI: 10.5252/geodiversitas2021v43a11, http://zenodo.org/record/489110
Rose Stradner, film actress
No full textRose Stradner, film actressTo order a reproduction, inquire about permissions, or for information about prices see:
http://www.lib.washington.edu/specialcollections/services/reproduction/reproduction
Please cite the Order NumberScanned at 600ppi with an Epson 20000 flatbed scanner. Image then rotated, cropped, level-adjusted, and sharpened using Photoshop CS3. Converted to a JPEG2000 image upon ingest into CONTENTdm
Arrest transitions in protein solutions – insight from combining scattering, microrheology, and computer simulations
No full textThe static and dynamic properties of concentrated protein solutions are essential ingredients for our understanding of the cellular machinery or formulating biopharmaceuticals. Here a combination of advanced characterization techniques such as light and x-ray scattering, neutron spin echo measurements [1] and microrheology experiments [2], combined with the theoretical toolbox from colloid physics and state-of-the-art computer simulations [3], considerably enhances our understanding of the link between protein interactions and the stability, dynamics and flow properties of these solutions up to high concentrations. We will address the enormous influence of weak attractive interactions known to exist between many globular proteins, and demonstrate the dramatic effect of an interaction potential anisotropy [1] such as attractive patches and shape anisotropy [3] on the dynamic properties. We will also discuss how we can combine interparticle interaction effects and the formation of (transient) equilibrium clusters in an attempt to understand and predict properties such as the concentration dependence of the zero shear viscosity of dense protein solutions [4].
(1) Bucciarelli, S.; Myung, J. S.; Farago, B.; Das, S., Vliegenthart, G.; Holderer, O.; Winkler, R. G.; Schurtenberger, P.; Gompper, G.; Stradner, A. “Dramatic influence of patchy attractions on short-time protein diffusion under crowded conditions” Sci. Adv. 2016, 2:e1601432.
(2) Garting, T. and Stradner, A. “Optical Microrheology of Protein Solutions using Tailored Nanoparticles” Small 2018, 1801548.
(3) Myung, J. S.; Roosen-Runge, F.; Winkler, R. G.; Gompper, G.; Schurtenberger, P.; Stradner, A. “Weak shape anisotropy leads to non-monotonic crowding effects impacting protein dynamics under physiologically relevant conditions” J. Phys. Chem. B 2018, 122, 12396-12402.
(4) Bergman, M.; Garting, T.; Schurtenberger, P.; Stradner, A. “Experimental Evidence for a Cluster Glass Transition in Concentrated Lysozyme Solutions” submitted to J. Phys. Chem. B, 2019
Modeling equilibrium clusters in lysozyme solutions
No full textWe present a combined experimental and numerical study of the equilibrium cluster formation in globular-protein solutions under no-added salt conditions. We show that a cluster phase emerges as a result of a competition between a long-range screened Coulomb repulsion and a short-range attraction. A simple effective potential, in which electrostatic repulsion is fixed by experimental conditions and attraction is modeled with a generalized Lennard-Jones potential, accounts in a remarkable way for the wavevector dependence of the X-ray scattering structure factor
Lanternithus minutus Stradner 1962
No full textLanternithus minutus Stradner, 1962 (Fig. 18E) Lanternithus minutus Stradner, 1962: 375, pl. 2, figs 12-15. DISTRIBUTION. — L. minutus is biostratigraphically significant, despite its rather long range (upper lower Eocene-lower Oligocene). In the North Sea Basin it has a synchronous lowest consistent occurrence (LCO) within the upper middle of NP14: from the base of unit B4 (upper part of the Brussel Sand Formation) at the Mont-des-Récollets, where its occurrence coincides with the LO of Nummulites laevigatus, from about 2.5 to 3 m above the base of the ‘Glauconie Grossière s.s.’ (as defined by Blondeau 1980) in the Paris Basin (appearance level of Blackites inflatus) and from the Nummulites laevigatus Bed (F6) at Bracklesham Bay, UK. Isolated specimens occur earlier. In the Belgian Basin they are known from many localities within the lower middle of unit B3, which corre- lates with lower middle NP14. A single specimen is known from the lower part of Unit A4 (top of the Aalter Sand Formation) in the Vlakte van de Raan borehole, one from the turritellid level at Whitecliff Bay (at 225 m above the base of the London Clay, dixit D. Curry), and two from the upper part of the ‘Chaumont-en-Vexin sands’ in the Paris Basin, all attributable to the base of NP14. In west Kazakhstan (e.g. Aktulagay), L. minutus seems to appear still earlier (within the middle of NP13) (King et al. 2013). DISCUSSION This small nannolith with a box-like shape has a very distinctive morphology and optical interference pattern, allowing unambiguous and easy recognition.Published as part of Steurbaut, Etienne & Nolf, Dirk, 2021, The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes - reassessment of the boundary criterion for the base- Lutetian GSSP, pp. 311-363 in Geodiversitas 43 (11) on pages 342-344, DOI: 10.5252/geodiversitas2021v43a11, http://zenodo.org/record/489110
Discoaster wemmelensis Achuthan & Stradner 1969
No full textDiscoaster wemmelensis Achuthan & Stradner, 1969 (Fig. 18 O-R) Discoaster wemmelensis Achuthan & Stradner, 1969: 5, 6, text-fig. 2; pl. 4, figs 3-4. DISTRIBUTION. — D. wemmelensis is consistently recorded in Lutetian nannofossil assemblages worldwide, although generally in low concentrations (Perch-Nielsen 1985; Aubry 1986; Varol 1998; Tori & Monechi 2013; Franceschi et al. 2015). It occurs in very low numbers at the Mont-des-Récollets, from the base of the Brussel Sand Formation (its LO is at the base of Unit B1, lower NP14) up to the base of the Wemmel Sand Member (middle NP15). A few isolated specimens have been recorded slightly earlier at the top of the Aalter Sand Formation in boreholes north of the Mont-des- Récollets, but not at the Mont-des-Récollets itself (2 in the Vlakte van de Raan borehole and 1 specimen in the Oedelem borehole, a few meters above the base of NP14 as defined herein). This might not correspond to its total range, as in Belgium D. wemmelensis is known to occur throughout the Wemmel Sand Member (middle NP15) up to the Ursel Clay Member (base of NP16) (Steurbaut 1986). DISCUSSION This small (d = c. 5 µm) discoaster with serrate outline is marked by two superimposed cycles of elements, consisting of 20 to 30 wedge-shaped rays, and lacks a central knob.Published as part of Steurbaut, Etienne & Nolf, Dirk, 2021, The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes - reassessment of the boundary criterion for the base- Lutetian GSSP, pp. 311-363 in Geodiversitas 43 (11) on page 346, DOI: 10.5252/geodiversitas2021v43a11, http://zenodo.org/record/489110
FIGURES 1–8. Siphonoperla ottomoogi. 1 in A new Siphonoperla species from the Eastern Alps (Plecoptera: Chloroperlidae), with comments on the genus
No full textFIGURES 1–8. Siphonoperla ottomoogi. 1, male habitus; 2, male genitalia, ventral view; 3, male genitalia, lateral view; 4, female genitalia, ventral view; 5, egg, lateral view; 6, egg, detail of collar; 7, larva, habitus; 8, larva, head and pronotum.Published as part of Graf, Wolfram, Stradner, Dennis & Weiss, Steve, 2008, A new Siphonoperla species from the Eastern Alps (Plecoptera: Chloroperlidae), with comments on the genus, pp. 31-38 in Zootaxa 1891 on page 34, DOI: 10.5281/zenodo.18433
sj-docx-1-car-10.1177_19476035211069251 – Supplemental material for The Association of Blood Biomarkers and Body Mass Index in Knee Osteoarthritis: A Cross-Sectional Study
No full textSupplemental material, sj-docx-1-car-10.1177_19476035211069251 for The Association of Blood Biomarkers and Body Mass Index in Knee Osteoarthritis: A Cross-Sectional Study by Paul Schadler, Birgit Lohberger, Bettina Thauerer, Martin Faschingbauer, Werner Kullich, Martin Helmut Stradner, Andreas Leithner, Valentin Ritschl, Maisa Omara and Bibiane Steinecker-Frohnwieser in CARTILAGE</p
Self-assembly in patchy proteins: From transient networks to attractive glasses
No full textDynamic properties of crowded protein solutions are difficult to predict and control. This for example considerably limits our ability to create stable and injectable formulations of proteins or peptides at high concentrations. Another physiologically relevant case is presbyopia, or age-related farsightedness, where the pathological stiffening of the eye lens can be related to a liquid-solid transition of the protein mixtures inside the eye lens cells1. It is thus essential to achieve a quantitative understanding of the link between the molecular structure of the proteins and the interactions between them, and how these interactions influence the stability, dynamics and flow properties of the solutions as a function of their concentration. Here we show how we can use a combination of advanced characterization techniques1-4 such as neutron spin echo, small-angle scattering, 3D cross correlation light scattering and microrheology, combined with state-of-the-art computer simulations to assess and predict interparticle interactions and their impact on the dynamics and flow behavior of crowded protein solutions. We particularly point out the enormous influence of weak attractive interactions known to exist between many globular proteins, and demonstrate the dramatic effect of an interaction potential anisotropy such as attractive patches4 and shape anisotropy on the dynamic properties.
[1] G. Foffi, G. Savin, S. Bucciarelli, N. Dorsaz, G. Thurston, A. Stradner, P. Schurtenberger; A Hard Sphere-Like Glass Transition in Eye Lens Alpha Crystallin Solutions ; Proc. Natl. Acad. Sci. U. S. A., 111, 16748-16753 (2014).
[2] F. Cardinaux, E. Zaccarelli, A. Stradner, S. Bucciarelli, B. Farago, S. Egelhaaf, F. Sciortino, P. Schurtenberger; Cluster-driven dynamical arrest in concentrated lysozyme solutions J. Phys. Chem. B, 115, 7227 (2011).
[3] S. Bucciarelli, L. Casal-Dujat, C. De Michele, F. Sciortino, J. Dhont, J. Bergenholtz, B. Farago, P. Schurtenberger, and A. Stradner; Unusual Dynamics of Concentration Fluctuations in Solutions of Weakly Attractive Globular Proteins ; The Journal of Physical Chemistry Letters, 6, 4470-4474 (2015).
[4] S. Bucciarelli, J. S. Myung, B. Farago, S. Das, G. A. Viegenthart, O. Holderer, R. G. Winkler, P. Schurtenberger, G. Gompper, and A. Stradner; Dramatic Influence of Attractions on Short-Time Protein Diffusion under Crowded Conditions ; Science Advances, 2, e1601432 (2016)
- …
