Index Catalog // ScholarsArchive@OSU

Strophatrypa, a new genus of Brachiopoda (Atrypidae), from upper Silurian strata of the Alexander terrane, Southeast Alaska

Creator:: Boucot, Arthur J., Blodgett, Robert B., and Rohr, David M.
Abstract:: The atrypid brachiopod Strophatrypa skaflestadi gen. et sp. nov. occurs in unnamed upper Silurian strata exposed near the town of Hoonah on northeast Chichagof Island, Southeast Alaska. The new genus represents the first strophic atrypoid with many characters otherwise similar to those of the Atrypidae. Although this genus is known...
Resource Type:: Article
Full Text:: Silurian of the Alexander terrane are shared. This paper represents a further contribution to our limited

⁴⁰Ar-³⁹Ar chronology for the volcanic history of the Southeast Greenland rifted margin

Creator:: Tegner, Christian and Duncan, Robert A.
Abstract:: Results of ⁴⁰Ar–³⁹Ar Ar dating constrain the age of the submerged volcanic succession, part of the seaward-dip ping reflector sequence of the Southeast Greenland volcanic rifted margin, recovered during Leg 163. At the 3°Ne 6 drilling transect, the fully normally magnetized volcanic units at Holes 989B (Unit 1) and 990A...
Resource Type:: Article
Full Text:: VOLCANIC HISTORY OF THE SOUTHEAST GREENLAND RIFTED MARGIN 1 Christian Tegner2 and Robert A. Duncan3

Lipid/bitumen maturation by hydrothermal activity in sediments of Middle Valley, leg 139

Creator:: Simoneit, Bernd R. T.
Abstract:: The accelerated diagenesis, maturation, and catagenesis of organic matter to hydrothermal petroleum was studied in sediments from Ocean Drilling Program Leg 139 in Middle Valley, northern Juan de Fuca Ridge. Sediments at Sites 855 and 856 have experienced high heat flow resulting in accelerated diagenesis of the immature organic matter...
Resource Type:: Article
Full Text:: origin and contains a significant terrigenous component, as confirmed by the alkane and biomarker

A Polish Jew on the Florida Frontier and in Occupied Tennessee: Excerpts from the Memoirs of Max White

Creator:: Sapon-White, Richard
Abstract:: In the late 1850s, few young Jews, recently arrived in the United States from Poland, chose to live in Florida. Fortunately, one who did, Max White, wrote down his memoirs of those years, leaving us a remarkable, very personal account of life on the Florida frontier as well as a...
Resource Type:: Article
Full Text:: be Alexander or Maximilian the Great. and now I awoke and it is a bad and sad dream! No no a

The interplay between chemistry and nucleation in the formation of carbonaceous dust in supernova ejecta

Creator:: Lazzati, Davide and Heger, Alexander
Abstract:: Core-collapse supernovae (CCSNe) are considered to be important contributors to the primitive dust enrichment of the interstellar medium in the high-redshift universe. Theoretical models of dust formation in stellar explosions have so far provided controversial results and a generally poor fit to the observations of dust formation in local supernovae....
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Full Text:: NUCLEATION IN THE FORMATION OF CARBONACEOUS DUST IN SUPERNOVA EJECTA Davide Lazzati1 and Alexander

Myths, Artifacts, and Fatal Flaws: Identifying Limitations and Opportunities in Vitamin C Research

Creator:: Michels, Alexander J. and Frei, Balz
Abstract:: Research progress to understand the role of vitamin C (ascorbic acid) in human health has been slow in coming. This is predominantly the result of several flawed approaches to study design, often lacking a full appreciation of the redox chemistry and biology of ascorbic acid. In this review, we summarize...
Resource Type:: Article
Full Text:: : Identifying Limitations and Opportunities in Vitamin C Research Alexander J. Michels * and Balz Frei

Bathymetry correction using an adjoint component of a coupled nearshore wave-circulation model: Tests with synthetic velocity data

Creator:: Kurapov, Alexander L. and Özkan-Haller, H. Tuba
Abstract:: The impact of assimilation of wave-averaged flow velocities on the bathymetric correction is studied in tests with synthetic (model-generated) data using tangent-linear and adjoint components of a one-way coupled nearshore wave-circulation model. Weakly and strongly nonlinear regimes are considered, featuring energetic unsteady along-beach flows responding to time-independent wave-averaged forcing due...
Resource Type:: Article
Full Text:: adjoint component of a coupled nearshore wave-circulation model: Tests with synthetic velocity data

A high-resolution coupled ice-ocean model of winter circulation on the bering sea shelf. Part I: Ice model refinements and skill assessments

Creator:: Durski, Scott M. and Kurapov, Alexander L.
Abstract:: The Bering Sea Shelf transitions from ice-free to mostly ice-covered and back again over each winter. Sea ice coverage and the timing of ice melt play a critical role in determining shelf structure and consequently ecosystem response during the spring transition and summer. In this study, a 2-km resolution ocean...
Resource Type:: Article
Full Text:: 1 1 2 3 4 5 6 7 8 A high-resolution coupled ice-ocean model of

Active metamaterials: sign of refractive index and gain-assisted dispersion management

Creator:: Govyadinov, Alexander A., Podolskiy, Viktor A., and Noginov, M.
Abstract:: We derive an approach to determine the causal direction of wavevectors of modes in optical metamaterials, which, in turn, determines signs of refractive index and impedance as a function of real and imaginary parts of dielectric permittivity and magnetic permeability. We use the developed technique to demonstrate that the interplay...
Resource Type:: Article
Full Text:: -assisted dispersion management Alexander A. Govyadinov and Viktor A. Podolskiya� Physics Department

Exciting Engineered Passive Dynamics in a Bipedal Robot

Creator:: Renjewski, Daniel, Spröwitz, Alexander, Peekema, Andrew, Jones, Mikhail, and Hurst, Jonathan
Abstract:: Dynamic bipedal robots, which are capable of versatile behaviour, are rare. Most bipedal robots are either versatile and static or dynamic and limited to specific gaits. Over the last twenty years the bio-inspired spring mass model became a versatile template for bipedal walking and running gaits with many studies motivated...
Resource Type:: Article
Full Text:: biomechanics, legged robotics and bioinspired control for legged locomotion. Alexander Spröwitz is a

ScholarsArchive@OSU

Strophatrypa, a new genus of Brachiopoda (Atrypidae), from upper Silurian strata of the Alexander terrane, Southeast Alaska

⁴⁰Ar-³⁹Ar chronology for the volcanic history of the Southeast Greenland rifted margin

Lipid/bitumen maturation by hydrothermal activity in sediments of Middle Valley, leg 139

A Polish Jew on the Florida Frontier and in Occupied Tennessee: Excerpts from the Memoirs of Max White

The interplay between chemistry and nucleation in the formation of carbonaceous dust in supernova ejecta

Myths, Artifacts, and Fatal Flaws: Identifying Limitations and Opportunities in Vitamin C Research

Bathymetry correction using an adjoint component of a coupled nearshore wave-circulation model: Tests with synthetic velocity data

A high-resolution coupled ice-ocean model of winter circulation on the bering sea shelf. Part I: Ice model refinements and skill assessments

Active metamaterials: sign of refractive index and gain-assisted dispersion management

Exciting Engineered Passive Dynamics in a Bipedal Robot

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