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Sample records for heino mller kaljo

  1. [The architect Heino Schmieden and his merits regarding the construction of hospitals in Berlin].

    PubMed

    Peters, Oleg

    The architect Johann Heino Schmieden (1835-1913) in research today is primarily perceived, if perceived at all, as the partner of Martin Gropius (1824-1880), with whom he maintained a joint architectural firm for 15 years. So far, not much has been published about his life and his achievements. The author proves that Schmieden's life's accomplishments deserve better appreciation and that he belonged to the leading representatives of his profession. Citing numerous examples in the Berlin area, the author presents Heino Schmieden as a nationally and internationally sought-after and leading hospital architect, without forgetting to mention that he discusses only one, albeit the most important, aspect of his work in the present article.

  2. Methylene Bridged Group 13-15 Compounds, R2MCH2PPh2 (R = CH2CMe3, CH2SiMe3; M = Ga, In). Crystal Structure of ((Me3CCH2)2InCH2PPh2)2.C6D6, a Molecule Containing an In-C-P-In-C-P Ring in a Chair Conformation

    DTIC Science & Technology

    1991-05-17

    1L8, ’lot 6248. 3. Karsch , H.H.; Appelt, A.; Khler, F.H.; Huller, G. Organometallics 128 4, 231. 4. Karsch , H.H.; Appelt, A.; Huller, G. J. Chem. Soc...Chem. Cozmuun. 198M, 11415. 5. Karsch , H.H.; Appelt, A.; Mller, G. Organometallics 1 , 14, 1624. 6. Beachley, O.T., Jr.; Pazik, J.C

  3. Optimal Aeroacoustic Shape Design Using the Surrogate Management Framework

    DTIC Science & Technology

    2004-02-09

    wish to thank the IMA for providing a forum for collaboration, as well as Charles Audet and Petros Koumoutsakos for valuable discussions. The authors...17] N. Hansen, D. Mller, and P. Koumoutsakos . Reducing the time complexity of the derandomized evolution strategy with covariance matrix adaptation...P. Koumoutsakos . Optimal aeroacoustic shape design using approximation modeling. Annual Research Briefs, Center for Turbulence Research, Stanford

  4. A New O(n2) Algorithm for the Symmetric Tridiagonal Eigenvalue/Eigenvector Problem

    DTIC Science & Technology

    1997-10-01

    greater than suggested by the above numbers because the other two phases , Householder reduction and back-transformation can exploit fast matrix...molecule by the Mller- Plesset theory, is now nearly 3 times faster than an earlier implementation [39]. This speedup is a direct consequence of a 10...method can also be faster than other implementations on a serial computer! The matrix T may be expressed as a modi cation of a direct sum of two smaller

  5. Masquerading as a Merger

    NASA Astrophysics Data System (ADS)

    Kohler, Susanna

    2015-11-01

    Dual active galactic nuclei (AGN), an intermediary product of galaxy mergers, can give us a better understanding of what happens when two galaxies collide. But because the angular separation of the two galactic nuclei is so small at this stage, identifying these systems is very difficult. In a recent study, a team of authors proposes a new technique for confirming dual AGN candidates.Signatures in SpectraTotal-intensity VLA image for J1023+3243. This system is confirmed as a dual AGN; the two compact radio cores are separately identifiable here. [Mller-Snchez et al. 2015]One approach commonly used to identify dual AGN candidates is to look for signatures in the spectra of these galaxies. Light is emitted by ionized gas in the narrow-line region (NLR), the region that extends from a few hundreds of parsecs to ~30kpc from the nuclei. The spatially-averaged spectrum of this region for dual AGN, however, appears double-peaked due to the motion of the two nuclei rotating around each other.But theres a problem with using this technique to identify dual AGN: other processes also produce double-peaked narrow-line emission, mimicking the behavior of dual AGN. These processes include the rotation of ionized gas in the galactic disk, and the motion of radio jets emitted from the AGN.A team of scientists led by Francisco Mller-Snchez (University of Colorado Boulder) have proposed that the use of a combination of high-resolution radio observations and spatially-resolved spectroscopy could be used to discern between these possible cases.Dual AGN or Moving Gas?To test this method, the group examined a sample of 18 active galactic nuclei from the Sloan Digital Sky Survey. These AGN had previously been identified as candidate dual AGN with double-peaked narrow emission lines. The team obtained both optical long-slit spectroscopy and high-resolution Very Large Array observations of these AGN. They then combined this information to identify the cause of the double-peaked lines in

  6. The Equations of Oceanic Motions

    NASA Astrophysics Data System (ADS)

    Müller, Peter

    2006-10-01

    Modeling and prediction of oceanographic phenomena and climate is based on the integration of dynamic equations. The Equations of Oceanic Motions derives and systematically classifies the most common dynamic equations used in physical oceanography, from large scale thermohaline circulations to those governing small scale motions and turbulence. After establishing the basic dynamical equations that describe all oceanic motions, M|ller then derives approximate equations, emphasizing the assumptions made and physical processes eliminated. He distinguishes between geometric, thermodynamic and dynamic approximations and between the acoustic, gravity, vortical and temperature-salinity modes of motion. Basic concepts and formulae of equilibrium thermodynamics, vector and tensor calculus, curvilinear coordinate systems, and the kinematics of fluid motion and wave propagation are covered in appendices. Providing the basic theoretical background for graduate students and researchers of physical oceanography and climate science, this book will serve as both a comprehensive text and an essential reference.

  7. Strategic for Treatment of Bone Metastases from Breast Cancer

    DTIC Science & Technology

    2004-10-01

    in human breast carcinoma, Cancer Res, 57: 5386-5390 13. Rickard , D.J., Subramaniam, M., Spelsberg, T.C. Molecular and cellular mechanisms of estrogen... 2001 . 15. Heino, T.J., Hentunen, T.A., Vaananen, K. Osteocytes inhibit osteoclastic bone resorption through transforming growth factor-J: Enhancement by...conjugates. J. Org. Chem. 66: 3704-3708, 2001 . 17. Bauss, F., Esswein, A., Reiff, K., Sponer, G., Muller-Beckm-ann, B. Effect of 17beta-estradiol

  8. Proposed stratotype for the base of the highest Cambrian stage at the first appearance datum of Cordylodus andresi, Lawson Cove section, Utah, USA

    USGS Publications Warehouse

    Miller, J.F.; Ethington, Raymond L.; Evans, K.R.; Holmer, L.E.; Loch, James D.; Popov, L.E.; Repetski, J.E.; Ripperdan, R.L.; Taylor, John F.

    2006-01-01

    We propose a candidate for the Global Standard Stratotype-section and Point (GSSP) for the base of the highest stage of the Furongian Series of the Cambrian System. The section is at Lawson Cove in the Ibex area of Millard County, Utah, USA. The marker horizon is the first appearance datum (FAD) of the conodont Cordylodus andresi Viira et Sergeyeva in Kaljo et al. [Kaljo, D., Borovko, N., Heinsalu, H., Khazanovich, K., Mens, K., Popov, L., Sergeyeva, S., Sobolevskaya, R., Viira, V., 1986. The Cambrian-Ordovician boundary in the Baltic-Ladoga clint area (North Estonia and Leningrad Region, USSR). Eesti NSV Teaduste Akadeemia Toimetised. Geologia 35, 97-108]. At this section and elsewhere this horizon also is the FAD of the trilobite Eurekia apopsis (Winston et Nicholls, 1967). This conodont characterizes the base of the Cordylodus proavus Zone, which has been recognized in many parts of the world. This trilobite characterizes the base of the Eurekia apopsis Zone, which has been recognized in many parts of North America. The proposed boundary is 46.7 m above the base of the Lava Dam Member of the Notch Peak Formation at the Lawson Cove section. Brachiopods, sequence stratigraphy, and carbon-isotope geochemistry are other tools that characterize this horizon and allow it to be recognized in other areas. ?? 2006 Nanjing Institute of Geology and Palaeontology, CAS.

  9. Quantum mechanical reaction probability of triplet ketene at the multireference second-order perturbation level of theory.

    PubMed

    Ogihara, Yusuke; Yamamoto, Takeshi; Kato, Shigeki

    2010-09-23

    Triplet ketene exhibits a steplike structure in the experimentally observed dissociation rates, but its mechanism is still unknown despite many theoretical efforts in the past decades. In this paper we revisit this problem by quantum mechanically calculating the reaction probability with multireference-based electronic structure theory. Specifically, we first construct an analytical potential energy surface of triplet state by fitting it to about 6000 ab initio energies computed at the multireference second-order Mller-Plesset perturbation (MRMP2) level. We then evaluate the cumulative reaction probability by using the transition state wave packet method together with an adiabatically constrained Hamiltonian. The result shows that the imaginary barrier frequency on the triplet surface is 328i cm-1, which is close to the CCSD(T) result (321i cm-1) but is likely too large for reproducing the experimentally observed steps. Indeed, our calculated reaction probability exhibits no signature of steps, reflecting too strong tunneling effect along the reaction coordinate. Nevertheless, it is emphasized that the flatness of the potential profile in the transition-state region (which governs the degree of tunneling) depends strongly on the level of electronic structure calculation, thus leaving some possibility that the use of more accurate theories might lead to the observed steps. We also demonstrate that the triplet potential surface differs significantly between the CASSCF and MRMP2 results, particularly in the transition-state region. This fact seems to require more attention when studying the "nonadiabatic" scenario for the steps, in which the crossing seam between S0 and T1 surfaces is assumed to play a central role.

  10. Dusty Lyman-alpha Emitters As Seen By Spitzer

    NASA Astrophysics Data System (ADS)

    Dolan, Kyle Arthur

    We present an analysis of Spitzer data for a large sample of low-redshift Lyalpha-emitting galaxies discovered by GALEX. Using the Donley et al. (2012) AGN selection region in color-color space IRAC photometry, we determined from our sample that the LAEs at z ˜ 0.3 have an AGN fraction of ˜24%. The total bolometric LIR for the sample was found using chi2 fitting along with template SEDs, and we found that the galaxies ranged from 108.05LSun to 10 11.57LSun, with a median LIR value of 10 10.39LSun. LIR and LLyalpha for our sample do not appear to be correlated, unlike the high-LIIRLyalpha-emitting objects examined by Colbert et al. (2006) and Nilsson & Mller (2009), which may mean that their samples of LAEs, with LIR/LSun > 1012, are qualitatively different from our own. The SFR values for the sample have a median value of 5.63 MSun yr -1, in agreement with the value of 6MSun yr-1 found in Cowie et al. (2011). Also, we find that most of the sample has a contribution of SFRIR to SFRTotal that is greater than 60%, indicating that these LAEs have a significant amount of dust extinction, and SFRUV alone is also not a good indicator for SFRTotal . From comparing dust extinction to UV continuum slope , it was found that LAEs do not follow the same curves predicted for SF or SB galaxies, indicating that LAEs at low redshift may experience more variation in their native UV spectra, making it impossible to recover their dust attenuation from their UV slope. This would suggest that LAEs may consist of stellar populations of varying ages, leading to more intrinsic variation in their UV slope.

  11. "Computational Modeling of Actinide Complexes"

    SciTech Connect

    Balasubramanian, K

    2007-03-07

    We will present our recent studies on computational actinide chemistry of complexes which are not only interesting from the standpoint of actinide coordination chemistry but also of relevance to environmental management of high-level nuclear wastes. We will be discussing our recent collaborative efforts with Professor Heino Nitsche of LBNL whose research group has been actively carrying out experimental studies on these species. Computations of actinide complexes are also quintessential to our understanding of the complexes found in geochemical, biochemical environments and actinide chemistry relevant to advanced nuclear systems. In particular we have been studying uranyl, plutonyl, and Cm(III) complexes are in aqueous solution. These studies are made with a variety of relativistic methods such as coupled cluster methods, DFT, and complete active space multi-configuration self-consistent-field (CASSCF) followed by large-scale CI computations and relativistic CI (RCI) computations up to 60 million configurations. Our computational studies on actinide complexes were motivated by ongoing EXAFS studies of speciated complexes in geo and biochemical environments carried out by Prof Heino Nitsche's group at Berkeley, Dr. David Clark at Los Alamos and Dr. Gibson's work on small actinide molecules at ORNL. The hydrolysis reactions of urnayl, neputyl and plutonyl complexes have received considerable attention due to their geochemical and biochemical importance but the results of free energies in solution and the mechanism of deprotonation have been topic of considerable uncertainty. We have computed deprotonating and migration of one water molecule from the first solvation shell to the second shell in UO{sub 2}(H{sub 2}O){sub 5}{sup 2+}, UO{sub 2}(H{sub 2}O){sub 5}{sup 2+}NpO{sub 2}(H{sub 2}O){sub 6}{sup +}, and PuO{sub 2}(H{sub 2}O){sub 5}{sup 2+} complexes. Our computed Gibbs free energy(7.27 kcal/m) in solution for the first time agrees with the experiment (7.1 kcal

  12. Electrically activated artificial muscles made with liquid crystal elastomers

    NASA Astrophysics Data System (ADS)

    Shahinpoor, Mohsen

    2000-06-01

    Composites of monodomain nematic liquid crystal elastomers and a conducting material distributed within their network are shown to exhibit large deformations, i.e. contraction, expansion, bending with strains of over 200% and appreciable force, by Joule heating through electrical activation. The electrical activation of the conducting material induces a rapid Joule heating in the sample leading to a nematic to isotropic phase transition where the elastomer of dimensions 32 mm x 7 mm x 0.4 mm contracted in less than a second. The cooling process, isotropic to nematic transition where the elastomer expands back to its original length, was slow and took 8 seconds. The material studied here is a highly novel liquid crystalline co-elastomer, invented and developed by Heino Finkelmann and co-workers at Albert-Ludwigs-Universitaet in Freiburg, Germany. The material is such that in which the mesogenic units are in both the side chains and the main chains of the elastomer. This co-elastomer was then mechanically loaded to induce a uniaxial network anisotropy before the cross-linking reaction was completed. These samples were then made into a composite with a conducting material such as dispersed silver particles or graphite fibers. The final samples was capable of undergoing more than 200% reversible strain in a few seconds.

  13. Cooling Rates of Chondrules

    NASA Astrophysics Data System (ADS)

    Yu, Y.; Hewins, R. H.; Eiben, B. A.

    1995-09-01

    probably in the range of several thousand degrees per hour, especially for type II chondrules. The lower temperature part of cooling curve is still uncertain. According to [10], the cooling rate in 1200 - 1300 degrees C range might be as low as ~10 degrees C/hr. Whether or how the cooling rates could have dropped to this low value needs further study. References: [1] Wasson J. T. (1995) in Chondrules and the Protoplanetary Disk, Cambridge Univ., in press. [2] Jones R. H. and Lofgren G. E. (1993) Meteoritics, 28, 213-221. [3] Radomsky P. M. and Hewins R. H. (1990) GCA, 54, 3475-3490. [4] Yu Y. et al. (1995) in Chondrules and the Protoplanetary Disk, Cambridge Univ., in press. [5] Grossman J. N. (1988) in Meteorites and the Early Solar System, 680-696, Univ. of Arizona, Tucson. [6] Hewins R. H. (1991) GCA, 55, 935-942. [7] Zanda B. et al. (1995) GCA, submitted. [8] Lewis R. D. et al. (1993) Meteoritics, 28, 622-628. [9] Tsuchiyama A. and Nagahara H. (1981) Mem. NIPR, Spec. Issue 20, 175-192. [10] Weinbruch S. and Mller W. F. (1995) GCA, in press.

  14. Super-Sharp Radio "Vision" Measures Galaxy's Motion in Space

    NASA Astrophysics Data System (ADS)

    2005-03-01

    Andreas Brunthaler of the Max Planck Institute for Radioastronomy in Bonn, Germany; Heino Falcke of ASTRON in the Netherlands; Lincoln Greenhill, also of the Harvard- Smithsonian Center for Astrophysics; and Christian Henkel, also of the Max Planck Institute in Bonn. The scientists reported their findings in the March 4 issue of the journal Science. The VLBA is a system of ten radio-telescope antennas, each with a dish 25 meters (82 feet) in diameter and weighing 240 tons. From Mauna Kea on the Big Island of Hawaii to St. Croix in the U.S. Virgin Islands, the VLBA spans more than 5,000 miles, providing astronomers with the sharpest vision of any telescope on Earth or in orbit. Dedicated in 1993, the VLBA has an ability to see fine detail equivalent to being able to stand in New York and read a newspaper in Los Angeles. The VLBA's scientific achievements include making the most accurate distance measurement ever made of an object beyond the Milky Way Galaxy; the first mapping of the magnetic field of a star other than the Sun; movies of motions in powerful cosmic jets and of distant supernova explosions; the first measurement of the propagation speed of gravity; and long-term measurements that have improved the reference frame used to map the Universe and detect tectonic motions of Earth's continents. The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.

  15. Radio Astronomers Lift "Fog" on Milky Way's Dark Heart: Black Hole Fits Inside Earth's Orbit

    NASA Astrophysics Data System (ADS)

    2004-04-01

    Thirty years after astronomers discovered the mysterious object at the exact center of our Milky Way Galaxy, an international team of scientists has finally succeeded in directly measuring the size of that object, which surrounds a black hole nearly four million times more massive than the Sun. This is the closest telescopic approach to a black hole so far and puts a major frontier of astrophysics within reach of future observations. The scientists used the National Science Foundation's Very Long Baseline Array (VLBA) radio telescope to make the breakthrough. Milky Way Nucleus The Milky Way's nucleus, as seen with the VLA. Sagittarius A* is the bright white dot at center. CREDIT: NRAO/AUI/NSF, Jun-Hui Zhao, W.M. Goss (Click on Image for Larger Version) "This is a big step forward," said Geoffrey Bower, of the University of California-Berkeley. "This is something that people have wanted to do for 30 years," since the Galactic center object, called Sagittarius A* (pronounced "A-star"), was discovered in 1974. The astronomers reported their research in the April 1 edition of Science Express. "Now we have a size for the object, but the mystery about its exact nature still remains," Bower added. The next step, he explained, is to learn its shape, "so we can tell if it is jets, a thin disk, or a spherical cloud." The Milky Way's center, 26,000 light-years from Earth, is obscured by dust, so visible-light telescopes cannot study the object. While radio waves from the Galaxy's central region can penetrate the dust, they are scattered by turbulent charged plasma in the space along the line of sight to Earth. This scattering had frustrated earlier attempts to measure the size of the central object, just as fog blurs the glare of distant lighthouses. "After 30 years, radio telescopes finally have lifted the fog and we can see what is going on," said Heino Falcke, of the Westerbork Radio Observatory in the Netherlands, another member of the research team. The bright, radio