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Sample records for juha olavi korhonen

  1. Complex fold and thrust belt structural styles: Examples from the Greater Juha area of the Papuan Fold and Thrust Belt, Papua New Guinea

    NASA Astrophysics Data System (ADS)

    Mahoney, Luke; Hill, Kevin; McLaren, Sandra; Hanani, Amanda

    2017-07-01

    The remote and inhospitable Papuan Fold Belt in Papua New Guinea is one of the youngest yet least well-documented fold and thrust belts on Earth. Within the frontal Greater Juha area we have carried out >100 km of geological traverses and associated analyses that have added significantly to the contemporary geological and geophysical dataset. Our structural analysis provides evidence of major inversion, detachment and triangle zone faults within the uplifted Eastern Muller Ranges. We have used the dataset to develop a quasi-3D model for the Greater Juha area, with associated cross-sections revealing that the exposed Cenozoic Darai Limestone is well-constrained with very low shortening of 12.6-21.4% yet structures are elevated up to 7 km above regional. We suggest the inversion of pre-existing rift architecture is the primary influence on the evolution of the area and that structures link to the surface via triangle zones and detachment faults within the incompetent Mesozoic passive-margin sedimentary sequence underlying competent Darai Limestone. Arc-normal oriented structures, dominantly oblique dextral, up-to-the-southeast, are pervasive across a range of scales and are here interpreted to relate at depth to weakened pre-existing basement cross-structures. It is proposed that Palaeozoic basement fabric controlled the structural framework of the basin during Early Mesozoic rifting forming regional-scale accommodation zones and related local-scale transfer structures that are now expressed as regional-scale arc-normal lineaments and local-scale arc-normal structures, respectively. Transfer structures, including complexly breached relay ramps, utilise northeast-southwest striking weaknesses associated with the basement fabric, as a mechanism for accommodating displacement along major northwest-southeast striking normal faults. These structures have subsequently been inverted to form arc-normal oriented zones of tear faulting that accommodate laterally variable

  2. Studies on the ecology and genetics of hybridization in Heterobasdion

    Treesearch

    M.M. Garbelotto; William J. Otrosina; I.H. Chapela; P. Gonthier

    2001-01-01

    The Heterobasidion taxonomic complex comprises two of the most important hngal tree pathogens in North America (Okosina 1989), and includes at least three other taxa in Eurasia (Niemela 1998). These taxa were initially identified as intersterility groups (ISGs) (Korhonen 1978) within the species H. annosum, but the current trend is...

  3. Magnetic Resonance Spectroscopy: An Objective Technique for the Quantification of Prostate Cancer Pathologies

    DTIC Science & Technology

    2005-02-01

    breast cancer tissue. NMR Biomed 2002;15( 5 ):327-337. 25. Ala -Korpela M, Posio P, Mattila S, Korhonen A, Williams SR. Absolute quantification of...TITLE AND SUBTITLE 5 . FUNDING NUMBERS Magnetic Resonance Spectroscopy: An Objective Technique W81XWH-04-1-0190 for the Quantification of Prostate...4- 5 Key Research Accomplishments

  4. Mathematics Education Research in Finland: Yearbook, 1987-1988. Publication Series B: Theory into Practice 39.

    ERIC Educational Resources Information Center

    Kupari, Pekka, Ed.

    This yearbook includes four articles, one of which is written in German. The first article, "The Development of Mathematics Attitudes on the Upper Level of the Comprehensive School" (Olavi Karjalainen), examines the development of children's attitudes towards mathematics and the factors related to the development during the upper level…

  5. CRREL, 30 Years Retrospective 1986-1991

    DTIC Science & Technology

    1990-01-01

    commercially. A patent was awarded to Charles J. Korhonen and Frederick C. Gernhard, for a Blister Pressure Relief Valve. This valve, now in commercial...Andrew Assur Michael A. Bilello W. Keith Boyd GilbertA. Currier Francis C. Gagnon Robert W. Gerdel Arnold R. Goerke B. Lyle Hansen James R... Frederick Crory receives Army Research & Development Award. 20 Rodney Poland receives Meritorious Civilian Service Award. 1979 CRREL receives U.S. Army

  6. JPRS Report, West Europe

    DTIC Science & Technology

    2007-11-02

    Ozal Steps In To Settle F-16 Project Troubles 57 SOCIAL ITALY Fiat Accused of Corrupting Union Members 59 JPRS-WER-88-037 15 July 1988 POLITICAL...ride on Sweden’s coattails! JPRS-WER-88-037 15 July 1988 [Question] Have our affairs with the Soviet Union been handled too indifferently during the...the internal develop- ments of the Soviet Union and other socialist countries. Korhonen pointed out that the Nordic countries have remained free of

  7. Technology Transfer Opportunities for the Construction Engineering Community: Materials and Diagnostics.

    DTIC Science & Technology

    1986-02-27

    34 .. CC .0 clj 0 C.C. -" C 4)4) 0 C.27 ROOF BLISTER VALVE Charles Korhonen U.S. Army Cold Regions Research and Engineering Laboratory Annually, the Army...7122 (within Illinois). REFERENCES 1. A. Kumar, E. C. Segan, and J. Bukowski , "Ceramic Coated Anodes for Cathodic Protection," Materials Performance...Chief of Engineers. References: (Available from the author) 1. "Roof Moisture Surveys: Yesterday, Today and Tomorrow," by Wayne Tobiasson and Charles

  8. Modifiable Risk Factors for Marijuana Use Among Adolescents in a Youth Development Program

    DTIC Science & Technology

    2010-01-08

    thereby reducing the risk of adolescent substance abuse and dependence later in young adulthood [2]. These types of programs usually employ a...development programs to reduce the risk of marijuana use among young people . This study assessed the relationship between drug-related attitudes...Drug Use and Abuse in Adolescence and Young Adulthood: Evidence of Generalized Risk . Drug Alcohol Depend 2009;102:78-87. 2. Creemers, HE, Korhonen, T

  9. Work Values of Hispanic and Mainstream Navy Recruits.

    DTIC Science & Technology

    1982-03-01

    based on the concept of hard work; Hispanic recruits will not. Hypothesis 4, . Hispanic recruits will have a cluster of beliefs pertaining to tne concept ...will see leisure and hard work as two different concepts ; hispanic recruits will tenu to m’erge the two .... . .... g ’ Hispanic iiork Values Pdye 11... concepts . The olavy is a "Total institution;" it closely regulates free tirie and contact with persons outside the organization (sucii as family visits

  10. 15 Jahre Beobachtungen des aktiven Doppelsterns V505 Ser

    NASA Astrophysics Data System (ADS)

    Bernhard, Klaus; Frank, Peter; Huemmerich, Stefan

    2013-03-01

    V505 Ser (GSC 02038-00293) is a short-period eclipsing RS CVn system which was discovered by Bernhard and Frank (2006). It has been the subject of several recent studies which have established physical parameters and distribution of spots (cf. eg. Korhonen et al., 2010; Dal et al., 2012). The present paper gives an overview over recent results from the literature and presents new photometry of V505 Ser which gives further evidence to the existence of a 6-year spot cycle. Klaus Bernhard, Peter Frank and Stefan Huemmerich are member of the BAV.

  11. MOODS: fast search for position weight matrix matches in DNA sequences

    PubMed Central

    Korhonen, Janne; Martinmäki, Petri; Pizzi, Cinzia; Rastas, Pasi; Ukkonen, Esko

    2009-01-01

    Summary: MOODS (MOtif Occurrence Detection Suite) is a software package for matching position weight matrices against DNA sequences. MOODS implements state-of-the-art online matching algorithms, achieving considerably faster scanning speed than with a simple brute-force search. MOODS is written in C++, with bindings for the popular BioPerl and Biopython toolkits. It can easily be adapted for different purposes and integrated into existing workflows. It can also be used as a C++ library. Availability: The package with documentation and examples of usage is available at http://www.cs.helsinki.fi/group/pssmfind. The source code is also available under the terms of a GNU General Public License (GPL). Contact: janne.h.korhonen@helsinki.fi PMID:19773334

  12. Type 1 Fimbria-Mediated Adhesion of Enteric Bacteria to Grass Roots

    PubMed Central

    Haahtela, Kielo; Tarkka, Eveliina; Korhonen, Timo K.

    1985-01-01

    Type 1 fimbriae of Klebsiella pneumoniae and Enterobacter agglomerans mediated bacterial adhesion to the roots of bluegrass, Poa pratensis. Purified, radiolabeled fimbriae bound to grass roots in vitro; binding was inhibited by α-methyl-d-mannoside or Fab fragments to the fimbriae. Anti-type 1 fimbriae Fab fragments and α-methyl-d-mannoside also inhibited adhesion of type 1-fimbriated bacteria to P. pratensis roots. It is proposed that associative nitrogen fixation by Klebsiella and Enterobacter strains also involves type 1 fimbriae, in addition to the type 3 fimbriae of Klebsiella spp. (T. K. Korhonen, E. Tarkka, H. Ranta, and K. Haahtela, J. Bacteriol. 155:860-865, 1983). Images PMID:16346792

  13. The Structure and Molecular Parameters of Camphene Determined by Fourier Transform Microwave Spectroscopy and Quantum Chemical Calculations

    NASA Astrophysics Data System (ADS)

    Neeman, Elias M.; Dréan, Pascal; Huet, T. R.

    2016-06-01

    The emission of volatile organic compounds, from plants has strong revelance for plant physiology, plant ecology and atmospheric chemistry. Camphene (C10H16) is a bicyclic monoterpene which is emitted in the atmosphere by biogenic sources. The structure of the unique stable conformer was optimized using density functional theory and ab initio calculations. The rotational spectrum of camphene was recorded in a supersonic jet expansion with a Fourier transform microwave spectrometer over the range 2-20 GHz. Signals from the parent species and from the ten 13C isotopomers were observed in natural abundance. The rotational and centrifugal distortion parameters were fitted to a Watson's Hamiltonian in the A-reduction. A magnetic hyperfine structure associated with the pairs of hydrogen nuclei in the methylene groups was observed and modeled.The rotational constants coupled to the equilibrium structure calculations were used to determine the r_0 and the r_m(1) gas-phase geometries of the carbon skeleton. The present work provides the first spectroscopic characterization of camphene in the gas phase and these results are also relevant for ozonolysis kinetics study through Criegee intermediates. R. Baraldi, F. Rapparini, O. Facini, D. Spano and P. Duce, Journal of Mediterranean Ecology, Vol.6, No.1, (2005). A. Bracho-Nunez, N. M. Knothe, S. Welter, M. Staudt, W. R. Costa, M. A. R. Liberato, M. T. F. Piedade, and J. Kesselmeier Biogeosciences, 10, 5855-5873, (2013). Minna Kivimäenpää, Narantsetseg Magsarjav, Rajendra Ghimire, Juha-Matti Markkanen, Juha Heijari, Martti Vuorinen and Jarmo K. Holopainen, Atmospheric Environment, 60, 477-485, (2012). R.C. de M. Oliveira and G. F. Bauerfeldt, J. Phys. Chem. A, 119 2802-2812 (2015)

  14. Thermal and electromigration stress distributions measured by x-ray microdiffraction

    NASA Astrophysics Data System (ADS)

    Wang, Ping-Chuan

    Stresses in thin-film materials are reliability concerns in microelectronics. X-ray diffraction is an ideal technique for measuring stresses in thin films. However, almost all of the earlier measurements were made with millimeter-scale x-ray beams, and the stresses obtained were averages over macroscopic areas. Therefore, local stress determinations on individual microelectronic devices were not possible from these experiments. A synchrotron-based white x-ray microdiffraction was developed and applied for chemical composition mapping, grain orientation mapping, and local stress mapping on polycrystalline thin film materials with micron-scale spatial resolution and strain sensitivities on the order of 2×10sp{-4}. Mapping of micron-scale thin-film Cu patterns and of individual grains in polycrystalline Al thin films are described. Mapping of local stresses on individual Al conductor lines, which is the main subject of this dissertation, is applied to study the thermal stresses and electromigration stresses. Results of the thermal stress measurements show that stresses in the 200 mum-long, 10 mum-wide, 0.5 mum-thick passivated Al lines were equi-biaxial, consistent with the calculations by Korhonen et al. Passivations were shown to improve mechanical properties of the metal lines by increasing the yield stress and by limiting relaxation of compressive stress. As a result, hillocks were suppressed at elevated temperatures. Although no obvious short range grain-to-grain stress difference was observed, a local stress variation along an unpassivated Al (4 wt.% Cu) line was found to exist over a distance on the order of 100 mum at room temperature. Results of the real-time electromigration stress measurements indicate that electromigration occurred through grain boundary diffusion in these 10 mum-wide Al lines. These results also provide direct evidence for a linear stress gradient induced by electromigration along conductor lines, as predicted by Blech et al. in 1976

  15. Grouping chemicals for health risk assessment: A text mining-based case study of polychlorinated biphenyls (PCBs).

    PubMed

    Ali, Imran; Guo, Yufan; Silins, Ilona; Högberg, Johan; Stenius, Ulla; Korhonen, Anna

    2016-01-22

    As many chemicals act as carcinogens, chemical health risk assessment is critically important. A notoriously time consuming process, risk assessment could be greatly supported by classifying chemicals with similar toxicological profiles so that they can be assessed in groups rather than individually. We have previously developed a text mining (TM)-based tool that can automatically identify the mode of action (MOA) of a carcinogen based on the scientific evidence in literature, and it can measure the MOA similarity between chemicals on the basis of their literature profiles (Korhonen et al., 2009, 2012). A new version of the tool (2.0) was recently released and here we apply this tool for the first time to investigate and identify meaningful groups of chemicals for risk assessment. We used published literature on polychlorinated biphenyls (PCBs)-persistent, widely spread toxic organic compounds comprising of 209 different congeners. Although chemically similar, these compounds are heterogeneous in terms of MOA. We show that our TM tool, when applied to 1648 PubMed abstracts, produces a MOA profile for a subgroup of dioxin-like PCBs (DL-PCBs) which differs clearly from that for the rest of PCBs. This suggests that the tool could be used to effectively identify homogenous groups of chemicals and, when integrated in real-life risk assessment, could help and significantly improve the efficiency of the process.

  16. World Digital Magnetic Anomaly Map version 2 (WDMAM v.2) - released for research and education

    NASA Astrophysics Data System (ADS)

    CHOI-Dyment, Y.; Lesur, V.; Dyment, J.; Hamoudi, M.; Thebault, E.; Catalan, M.

    2015-12-01

    The World Digital Magnetic Anomaly Map is an international initiative carried out under the auspices of the International Association of Geomagnetism and Aeronomy (IAGA) and the Commission for the Geological Map of the World (CGMW). A first version of the map has been published and distributed eight years ago (WDMAM v1; Korhonen et al., 2007). We have produced a candidate which has been accepted as the second version of this map (WDMAM v2) at the International Union of Geophysics and Geodesy in Prag, in June 2015. On land, we adopted an alternative approach avoiding any unnecessary processing on existing aeromagnetic compilations. When available, we used the original aeromagnetic data. As a result the final compilation remains an acceptable representation of the national and international data grids. Over oceanic areas the marine data have been extended. In areas of insufficient data coverage, a model has been computed based on a modified digital grid of the oceanic lithosphere age, considering plate motions in the determination of magnetization vector directions. This model has been further adjusted to the available data, resulting in a better representation of the anomalies. The final grid will be periodically upgraded. Version 2.0 has been released and is available at wdmam.org to support both research and education projects. Colleagues willing to contribute data for future releases (and become a co-author of the map) should contact any of the authors or Jerome Dyment (chair of the WDMAM Task Force) at jdy@ipgp.fr .

  17. Transcriptional responses of Norway spruce (Picea abies) inner sapwood against Heterobasidion parviporum.

    PubMed

    Oliva, J; Rommel, S; Fossdal, C G; Hietala, A M; Nemesio-Gorriz, M; Solheim, H; Elfstrand, M

    2015-09-01

    The white-rot fungus Heterobasidion parviporum Niemelä & Korhonen establishes a necrotrophic interaction with Norway spruce (Picea abies (L.) H.Karst.) causing root and butt rot and growth losses in living trees. The interaction occurs first with the bark and the outer sapwood, as the pathogen enters the tree via wounds or root-to-root contacts. Later, when the fungus reaches the heartwood, it spreads therein creating a decay column, and the interaction mainly occurs in the inner sapwood where the tree creates a reaction zone. While bark and outer sapwood interactions are well studied, little is known about the nature of the transcriptional responses leading to the creation of a reaction zone. In this study, we sampled bark and sapwood both proximal and distal to the reaction zone in artificially inoculated and naturally infected trees. We quantified gene expression levels of candidate genes in secondary metabolite, hormone biosynthesis and signalling pathways using quantitative polymerase chain reaction. An up-regulation of mainly the phenylpropanoid pathway and jasmonic acid biosynthesis was found at the inoculation site, when inoculations were compared with wounding. We found that transcriptional responses in inner sapwood were similar to those reported upon infection through the bark. Our data suggest that the defence mechanism is induced due to direct fungal contact irrespective of the tissue type. Understanding the nature of these interactions is important when considering tree breeding-based resistance strategies to reduce the spread of the pathogen between and within trees.

  18. Release of the World Digital Magnetic Anomaly Map version 2 (WDMAM v2) scheduled

    NASA Astrophysics Data System (ADS)

    Dyment, Jérôme; Lesur, Vincent; Choi, Yujin; Hamoudi, Mohamed; Thébault, Erwan; Catalan, Manuel

    2015-04-01

    The World Digital Magnetic Anomaly Map is an international initiative carried out under the auspices of the International Association of Geomagnetism and Aeronomy (IAGA) and the Commission for the Geological Map of the World (CGMW). A first version of the map has been published and distributed eight years ago (WDMAM v1; Korhonen et al., 2007). After a call for an improved second version of the map in 2011, the slow process of data compilation, map preparation, evaluation and finalization is near completion, and the WDMAM v2 will be released at the International Union of Geophysics and Geodesy (IUGG) meeting to be held in Prag in June-July 2015. In this presentation we display several shortcomings of the WDMAM v1, both on continental and oceanic areas, that are hopefully alleviated in the WDMAM v2, and discuss the process leading to the new map. We reiterate a long-standing call for aeromagnetic and marine magnetic data contribution, and explore future directions to pursue the effort toward a more complete, higher resolution magnetic anomaly map of the World.

  19. [Nanobacteria--microbiological characteristics].

    PubMed

    Wilk, Iwona; Martirosian, Gayane

    2004-03-03

    We have reviewed recent publications regarding the microbiological characteristic and pathogenicity of a novel infectious agent, the mineral-forming, sterile-filterable, slow-growing Gram-negative Nanobacteria, detected in bovine/human blood, kidney cyst fluid, urine and kidney stones. According to their 16S rDNA structure, nanobacteria belong to the alpha-2 Proteobacteria, subgroup, which includes the Brucella and Bartonella species. Their cell diameter is 0.2-0.5 microm (the smallest known cell-walled bacteria). Their most remarkable characteristic is the formation of carbonate apatite crystals of neutral pH and at physiologic phosphate and calcium concentrations. The extracellular mineralization forms a hard protective shelter for these hardy microorganisms, and enables them to survive conditions of physical stress that would be lethal to most other bacterial species. The Olavi Kajander group (Finland) suggests that the apatite produced by nanobacteria may play a key role in the formation of all kidney stones, by providing a central calcium phosphate deposit around which other crystalline components can collect. Nanobacteria seems to be a causative agent of diseases related to biomineralization processes.

  20. The orbitozygomatic stich: A technical modification of the lateral supraorbital approach

    PubMed Central

    Lazukova, Miroslava; Andrade-Barazarte, Hugo; Makhamov, Mahkham; Kivelev, Juri; Goehre, Felix; Jahromi, Behnam Rezai; Ibrahim, Tarik F.; Araujo, Ricardo; Lehto, Hanna; Hernesniemi, Juha A.

    2016-01-01

    Background: The lateral supraorbital approach (LSO) provides access to a variety of pathologies including anterior and some posterior circulation aneurysms, sellar and suprasellar lesions, and anterior fossa tumors. Technical modifications of LSO improve the surgical exposure of the skull base. Methods: We retrospectively analyzed 73 consecutive patients treated by the senior author (Juha A. Hernesniemi), at the Department of Neurosurgery, Helsinki University Hospital in Helsinki, Finland from May 2013 to October 2013. This study cohort underwent a modified LSO to access anterior circulation aneurysms, sellar and suprasellar tumors, and anterior fossa tumors. The studied population comprised 30 men and 43 women, with a mean age at treatment of 54 years (9–83 years). Results: LSO was successfully used to access anterior circulation aneurysms in 59 (81%) patients, 10 (14%) patients with anterior cranial fossa tumors, and 4 (5%) patients with suprasellar tumors. The skull base drilling provided a mean of 6.8 mm (1.7–22 mm) in increased exposure. Conclusion: LSO provides adequate access to vascular and neoplastic lesions of the anterior cranial fossa, by drilling approximately 6.8 mm (1.7–22 mm) of the lateral orbital wall and sphenoid wing. This enhances surgical exposure and trajectory. An additional trick while performing an LSO is to place a single or multiple stiches (orbitozygomatic stich) at the base of the dura once opened, eliminating the dead space between the dura and anterior skull base. PMID:27168949

  1. The orbitozygomatic stich: A technical modification of the lateral supraorbital approach.

    PubMed

    Lazukova, Miroslava; Andrade-Barazarte, Hugo; Makhamov, Mahkham; Kivelev, Juri; Goehre, Felix; Jahromi, Behnam Rezai; Ibrahim, Tarik F; Araujo, Ricardo; Lehto, Hanna; Hernesniemi, Juha A

    2016-01-01

    The lateral supraorbital approach (LSO) provides access to a variety of pathologies including anterior and some posterior circulation aneurysms, sellar and suprasellar lesions, and anterior fossa tumors. Technical modifications of LSO improve the surgical exposure of the skull base. We retrospectively analyzed 73 consecutive patients treated by the senior author (Juha A. Hernesniemi), at the Department of Neurosurgery, Helsinki University Hospital in Helsinki, Finland from May 2013 to October 2013. This study cohort underwent a modified LSO to access anterior circulation aneurysms, sellar and suprasellar tumors, and anterior fossa tumors. The studied population comprised 30 men and 43 women, with a mean age at treatment of 54 years (9-83 years). LSO was successfully used to access anterior circulation aneurysms in 59 (81%) patients, 10 (14%) patients with anterior cranial fossa tumors, and 4 (5%) patients with suprasellar tumors. The skull base drilling provided a mean of 6.8 mm (1.7-22 mm) in increased exposure. LSO provides adequate access to vascular and neoplastic lesions of the anterior cranial fossa, by drilling approximately 6.8 mm (1.7-22 mm) of the lateral orbital wall and sphenoid wing. This enhances surgical exposure and trajectory. An additional trick while performing an LSO is to place a single or multiple stiches (orbitozygomatic stich) at the base of the dura once opened, eliminating the dead space between the dura and anterior skull base.

  2. Influence of the focal point position on the properties of a laser-produced plasma

    NASA Astrophysics Data System (ADS)

    Kasperczuk, A.; Pisarczyk, T.; Badziak, J.; Miklaszewski, R.; Parys, P.; Rosinski, M.; Wolowski, J.; Stenz, CH.; Ullschmied, J.; Krousky, E.; Masek, K.; Pfeifer, M.; Rohlena, K.; Skala, J.; Pisarczyk, P.

    2007-10-01

    This paper deals with investigations of the influence of the focusing lens focal point position on the properties of a plasma produced by a defocused laser beam. The experiment was carried out at the Prague Asterix Laser System iodine laser [K. Jungwirth, A. Cejnarova, L. Juha, B. Kralikova, J. Krasa, E. Krousky, P. Krupickova, L. Laska, K. Masek, T. Mocek, M. Pfeifer, A. Prag, O. Renner, K. Rohlena, B. Rus, J. Skala, P. Straka, and J. Ullschmied, Phys. Plasmas 8, 2495 (2001)] by using the third harmonic of laser radiation (λ=0.438μm), laser energy of 70J, pulse duration of 250ps (full width at half-maximum), and beam spot radii of 250 and 400μm. Cu and Ta were chosen as target materials. The experimental data were obtained by means of a three-frame interferometric system, ion collectors, and crater replica techniques. The reported results allow formulating an important hypothesis that the laser-produced plasma modifies strongly the laser intensity distribution. It is shown how such a modification depends on the relative position and distance of the focal point to the target surface. Of particular importance is whether the focal point is located inside or in front of the target. The irradiation geometry is crucial for the possibility of generating plasma jets by laser radiation. Well-formed jet-like plasma structures can be created if an initially homogeneous laser intensity distribution is transformed in the plasma to an annular one.

  3. Effect of In-Plume Aerosol Processing on the Efficacy of Marine Cloud Albedo Enhancement from Controlled Sea-Spray Injections

    NASA Astrophysics Data System (ADS)

    Stevens, R. G.; Spracklen, D.; Korhonen, H.; Pierce, J. R.

    2010-12-01

    The intentional enhancement of cloud albedo via controlled sea-spray injection from ships has been suggested as a possible means to control anthropogenic global warming (1); however, there remains significant uncertainty in the efficacy of this method due to uncertainties in aerosol and cloud microphysics. Recent analysis showed that more sea-spray may be necessary than previously assumed to reach a desired cooling due to nonlinearities in the aerosol/cloud microphysics (2). A major assumption used in (2) is that all sea-spray was emitted uniformly into some oceanic grid boxes, and thus did not account for sub-grid aerosol microphysics within the sea-spray plumes. However, as a consequnce of the fast sea-spray injection rates which are proposed, in the order of 1x10^17 1/s (1), particle concentrations in these plumes may be quite high and particle coagulation may significantly reduce the number of emitted particles and increase their average size. Therefore, it is possible that the emissions necessary to reach a desired cooling may be even larger than currently assumed. We explore the processing of the freshly emitted sea-spray plumes in the Large-Eddy Simulation (LES)/Cloud Resolving Model (CRM) the System for Atmospheric Modelling (SAM, 3) with the online aerosol microphysics module TOMAS (4). We determine how the final number and size of particles (once well mixed with background air) depends on the emission rate and size distribution of the sea-spray plume and on the pre-existing aerosol concentrations and local atmospheric conditions. Finally, we make suggestions for effective size-resolved emissions for use in climate models. (1) Salter, S. et al., Phil. Trans. R. Soc. A., 2008. (2) Korhonen, H. et al., Atmos. Chem. Phys., 10, 4133-4143, 2010. (3) Khairoutdinov, M., and Randall, D.,. J. Atmos. Sci., 60, 607-625, 2003. (4) Pierce, J. and Adams, P., Atmos. Chem. Phys., 9, 1339-1356, 2009.

  4. Effect of In-Plume Aerosol Processing on the Efficacy of Marine Cloud Albedo Enhancement from Controlled Sea-Spray Injections

    NASA Astrophysics Data System (ADS)

    Stuart, G. S.; Stevens, R. G.; Spracklen, D. V.; Korhonen, H.; Pierce, J. R.

    2012-12-01

    The intentional enhancement of cloud albedo via controlled sea-spray injection from ships has been proposed as a possible method to control anthropogenic global warming (1); however, there remains significant uncertainty in the efficacy of this method due to uncertainties in aerosol and cloud microphysics. A major assumption used in multiple recent studies (2,3) is that all sea-spray was emitted uniformly into some oceanic grid boxes, and thus did not account for sub-grid aerosol microphysics within the sea-spray plumes. However, as a consequence of the fast sea-spray injection rates which are proposed, in the order of 10^17 1/s (1), particle concentrations in these plumes may be quite high and particle coagulation may significantly reduce the number of emitted particles and increase their average size. Therefore, it is possible that the emissions necessary to reach a desired cooling may be even larger than currently assumed. We explore the evolution of these sea-salt plumes using a multi-shelled Gaussian plume model with size-resolved aerosol coagulation. We determine how the final number and size of particles depends on the emission rate and size distribution of the emitted sea-spray plume and local atmospheric conditions, including wind speed and boundary-layer stability. Under the injection rates reported in (1) and typical marine conditions, we find that the number of aerosol particles is reduced by about 40%. This fraction decreases for decreasing emission rates or increasing wind speeds due to lower particle concentrations in the plume. Finally, we make suggestions for effective size-resolved emissions for use in climate models. (1) Salter, S. et al., Phil. Trans. R. Soc. A., 2008. (2) Korhonen, H. et al., Atmos. Chem. Phys., 10, 4133-4143, 2010. (3) Partanen, A.-I. et al., J. Geophys. Res., 117, D02203, 2012.

  5. World Digital Magnetic Anomaly Map (WDMAM) rev.2: Oceanic Domains

    NASA Astrophysics Data System (ADS)

    Hamoudi, M.; Dyment, J.; Choi, Y.; Thebault, E.; Quesnel, Y.; Roest, W. R.; Lesur, V.

    2012-12-01

    A large amount of aeromagnetic and marine magnetic data, complemented by satellite magnetic data, have been compiled and processed to produce the first World Digital Magnetic Anomaly Map (WDMAM; [1]). In oceanic areas, the data coverage is, however, very sparse over remote parts of the Pacific, Indian, and Southern oceans. Two attempts have been proposed to fill the gaps in these areas. Model WDMAM1-B [1] do so by superimposing synthetic magnetic anomalies computed from the age map of [2] - derived from a self-consistent plate tectonic model (and indirectly from the marine magnetic data), but the result is dominated by the synthetic anomalies which amplitudes poorly fit that of the observations. Model EMAG-2 [3] interpolates between sparse marine magnetic data using directional gridding and extrapolation based on the age map of [4], but the result displays many artificially elongated features due to the improper interpolation of non linear anomaly (caused, for instance, by a seamount). We propose a new map based on the following steps: (a) more realistic forward modeling of the marine magnetic anomalies including remanent magnetization vectors which take into account the age and motion of the oceanic lithosphere, as proposed by [5] for satellite anomalies; (b) evaluation of the equivalent magnetization by comparison of the synthetic and observed anomalies along the ship tracks; and (c) adjustment of the synthetic anomaly maps using this equivalent magnetization prior merging with the observed anomalies. [1] Korhonen et al., map published by CCGM/CGMW (http://ccgm.free.fr/), 2007 [2] Müller et al., JGR, 1997 [3] Maus et al., G3, 2009 [4] Müller et al., G3, 2008 [5] Dyment and Arkani-Hamed, JGR, 1998

  6. Systemic Hypoxia Increases Circulating Concentration of Apelin in Humans.

    PubMed

    Heinonen, Ilkka; Vuolteenaho, Olli; Koskenvuo, Juha; Arjamaa, Olli; Nikinmaa, Mikko

    2017-08-29

    Heinonen, Ilkka, Olli Vuolteenaho, Juha Koskenvuo, Olli Arjamaa, and Mikko Nikinmaa. Systemic hypoxia increases circulating concentration of apelin in humans. High Alt Med Biol 16:000-000, 2017. Apelin is a hormone that regulates cardiovascular function, and its concentration is increased by hypoxia based on cell culture and animal studies. As it remains unknown as to whether hypoxia could affect apelin levels in humans, we investigated whether breathing normobaric hypoxic gas mixture increases the circulating apelin concentration in healthy male subjects. Ten healthy young men (age 29 ± 5 years, body mass index 24.7 ± 2.8 kg/m(2)) breathed normobaric hypoxic gas mixture (11% O2/89% N2) for 1 hour. Venous blood samples were obtained immediately before, and 2 and 24 hours after the start of the hypoxic exposure and analyzed for circulating apelin concentrations. Arterial oxygen saturation decreased steadily from a baseline value of 99% ± 1% after the initiation hypoxia challenge and reached a steady-state level of 73% ± 6% within 20-30 minutes. Baseline apelin concentration was 3.3 ± 1.3 pmol/L and remained comparable (3.3 ± 1.4 pmol/L) to the baseline concentration at a 2-hour time point. However, apelin concentration at the 24-hour time point (5.5 ± 2.8 pmol/L) was significantly (by ∼67%) higher as compared with at both baseline and 2-hour time points (p < 0.05). In conclusion, in line with cell culture and animal studies, acute systemic hypoxia increases circulating apelin concentration also in humans.

  7. Chronologic constraints on the tectonic evolution of the Wilson Lake terrane of the Grenville Province, Canada

    NASA Astrophysics Data System (ADS)

    Reno, B. L.; Korhonen, F. J.; Stout, J. H.; Waight, T.

    2010-12-01

    The Wilson Lake terrane in central Labrador, Canada is one of a number of terranes that make up the Grenville Province, representing the northern extent of the Grenville Orogen in North America. Many of these terranes record evidence of two orogenies: the Labradorian Orogeny at ca. 1710-1600 Ma, and the Grenville Orogeny at ca. 1080-980 Ma. The rocks in the Wilson Lake terrane are interpreted to have been subjected to peak pressures of ~0.95 GPa and ~930°C during the Labradorian Orogeny (Korhonen et al., in prep., Stability of sapphirine + quartz in the Wilson Lake terrane: calculated equilibria in NCKFMASHTO). The final amalgamation of the Wilson Lake terrane over the underlying Parautochthonous Belt is interpreted to have occurred during the Grenville Orogeny, when the terrane was subjected to a lower-T (500-350°C) overprinting. However, petrologic and chronologic evidence for the Grenville orogeny is limited in the Wilson Lake terrane. Here we present results from a monazite chemical (U-Th)-Pb chronologic study in order to provide constraints on the metamorphic history of the Wilson Lake terrane. Monazite was analyzed in samples of orthopyroxene + sillimanite + quartz bearing and sapphirine + quartz bearing gneisses from throughout the Wilson Lake terrane. These samples contain two distinct populations of monazite: 1) a population of large (up to ~500 μm) monazite exhibits distinct core and rim zoning in yttrium X-ray compositional maps, and occurs predominately in the melanosome of the rocks, and 2) a population of smaller (up to ~50 μm) unzoned monazite rarely occurs in quartz-rich layers of the rocks. In a majority of the melanosome-hosted monazite, (U-Th)-Pb chemical ages yield cores and rims with statistically similar Labradorian ages of ca. 1705-1675 Ma. However, one sample from the middle of the terrane yields monazite grains with Labradorian age cores (ca. 1710 Ma) and post-Labradorian rims (ca. 1590 Ma). Monazite from the second, quartz

  8. Clonal relationships among bloodstream isolates of Escherichia coli.

    PubMed

    Maslow, J N; Whittam, T S; Gilks, C F; Wilson, R A; Mulligan, M E; Adams, K S; Arbeit, R D

    1995-07-01

    The clonal relationships among 187 bloodstream isolates of Escherichia coli from 179 patients at Boston, Mass., Long Beach, Calif., and Nairobi, Kenya, were determined by multilocus enzyme electrophoresis (MLEE), analysis of polymorphisms associated with the ribosomal operon (ribotyping), and serotyping. MLEE based on 20 enzymes resolved 101 electrophoretic types (ETs), forming five clusters; ribotyping resolved 56 distinct patterns concordant with the analysis by MLEE. The isolates at each study site formed a genetically diverse group and demonstrated similar clonal structures, with the same small subset of lineages accounting for the majority of isolates at each site. Moreover, two ribotypes accounted for approximately 30% of the isolates at each study site. One cluster contained the majority (65%) of isolates and, by direct comparison of the ETs and ribotypes of individual isolates, was genetically indistinguishable from the largest cluster for each of two other collections of E. coli causing pyelonephritis and neonatal meningitis (R. K. Selander, T. K. Korhonen, V. Väisänen-Rhen, P. H. Williams, P. E. Pattison, and D. A. Caugent, Infect. Immun. 52:213-222, 1986; M. Arthur, C. E. Johnson, R. H. Rubin, R. D. Arbeit, C. Campanelli, C. Kim, S. Steinbach, M. Agarwal, R. Wilkinson, and R. Goldstein, Infect. Immun. 57:303-313, 1989), thus defining a virulent set of lineages. The isolates within these virulent lineages typically carried DNA homologous to the adhesin operon pap or sfa and the hemolysin operon hly and expressed O1, O2, O4, O6, O18, O25, or O75 antigens. DNA homologous to pap was distributed among isolates of each major cluster, whereas hly was restricted to isolates of two clusters, typically detected in pap-positive strains, and sfa was restricted to isolates of one cluster, typically detected in pap- and hly-positive strains. The occurrence of pap-positive isolates in the same geographically and genetically divergent lineages suggests that this

  9. Analysis of the Type IV Fimbrial-Subunit Gene fimA of Xanthomonas hyacinthi: Application in PCR-Mediated Detection of Yellow Disease in Hyacinths

    PubMed Central

    van Doorn, J.; Hollinger, T. C.; Oudega, B.

    2001-01-01

    A sensitive and specific detection method was developed for Xanthomonas hyacinthi; this method was based on amplification of a subsequence of the type IV fimbrial-subunit gene fimA from strain S148. The fimA gene was amplified by PCR with degenerate DNA primers designed by using the N-terminal and C-terminal amino acid sequences of trypsin fragments of FimA. The nucleotide sequence of fimA was determined and compared with the nucleotide sequences coding for the fimbrial subunits in other type IV fimbria-producing bacteria, such as Xanthomonas campestris pv. vesicatoria, Neisseria gonorrhoeae, and Moraxella bovis. In a PCR internal primers JAAN and JARA, designed by using the nucleotide sequences of the variable central and C-terminal region of fimA, amplified a 226-bp DNA fragment in all X. hyacinthi isolates. This PCR was shown to be pathovar specific, as assessed by testing 71 Xanthomonas pathovars and bacterial isolates belonging to other genera, such as Erwinia and Pseudomonas. Southern hybridization experiments performed with the labelled 226-bp DNA amplicon as a probe suggested that there is only one structural type IV fimbrial-gene cluster in X. hyacinthi. Only two Xanthomonas translucens pathovars cross-reacted weakly in PCR. Primers amplifying a subsequence of the fimA gene of X. campestris pv. vesicatoria (T. Ojanen-Reuhs, N. Kalkkinen, B. Westerlund-Wikström, J. van Doorn, K. Haahtela, E.-L. Nurmiaho-Lassila, K. Wengelink, U. Bonas, and T. K. Korhonen, J. Bacteriol. 179: 1280–1290, 1997) were shown to be pathovar specific, indicating that the fimbrial-subunit sequences are more generally applicable in xanthomonads for detection purposes. Under laboratory conditions, approximately 1,000 CFU of X. hyacinthi per ml could be detected. In inoculated leaves of hyacinths the threshold was 5,000 CFU/ml. The results indicated that infected hyacinths with early symptoms could be successfully screened for X. hyacinthi with PCR. PMID:11157222

  10. FOREWORD: The 70th birthday of Professor Stig Stenholm The 70th birthday of Professor Stig Stenholm

    NASA Astrophysics Data System (ADS)

    Suominen, Kalle-Antti

    2010-09-01

    It is not easy to assess, or even to describe correctly a long and distinguished career that started about the time when I was born. In 1964 Stig Stenholm got both an engineering degree at the Helsinki University of Technology (HUT), and an MSc degree (in Mathematics) at the University of Helsinki. The two degrees demonstrate Stig's ability to understand both complex mathematics and experimental physics. Statistical physics or rather, quantum liquids, was the field in which Stig got his DPhil at Oxford in 1967, under the guidance of Dirk ter Haar. It is interesting that together they worked on studying fermions in a bosonic background [1]; at the time this meant, of course, 3He atoms as impurities in 4He liquid, but nowadays one would immediately connect such systems to the physics of cold atomic gases. The postdoctoral period in 1967-1968 at Yale University brought Stig in contact with Willis Lamb and laser physics [2]. Back in Finland, Stig's career in the 1970s was dominated by theoretical studies of gas lasers, especially pressure and collision effects on spectral lines and saturation spectroscopy, together with his first PhD student, Rainer Salomaa. A professorship at the University of Helsinki came in 1974, and in 1980 an important era started as Stig became the scientific director of the Research Institute for Theoretical Physics (TFT). At that time he also developed the semiclassical theory of laser cooling especially with Juha Javanainen. The laser spectroscopy work led to a textbook in 1984 [3], and the semiclassical laser cooling theory was summarized in a review article in 1986 [4]. These were not, of course, his only interests, as he also worked on free-electron lasers, ring-laser gyroscopes, multiphoton processes and quantum amplifiers. In an article written in 1990 in honour of Olli Lounasmaa [5], the founder of the famous Low Temperature Laboratory at HUT, Stig mentions that one of his most memorable achievements was acting as a bridge between the

  11. Snow Water Equivalent Retrieval By Markov Chain Monte Carlo Based on Memls and Hut Snow Emission Model

    NASA Astrophysics Data System (ADS)

    Pan, J.; Durand, M. T.; Vanderjagt, B. J.

    2014-12-01

    The Markov chain Monte Carlo (MCMC) method had been proved to be successful in snow water equivalent retrieval based on synthetic point-scale passive microwave brightness temperature (TB) observations. This method needs only general prior information about distribution of snow parameters, and could estimate layered snow properties, including the thickness, temperature, density and snow grain size (or exponential correlation length) of each layer. In this study, the multi-layer HUT (Helsinki University of Technology) model and the MEMLS (Microwave Emission Model of Layered Snowpacks) will be used as observation models to assimilate the observed TB into snow parameter prediction. Previous studies had shown that the multi-layer HUT model tends to underestimate TB at 37 GHz for deep snow, while the MEMLS does not show sensitivity of model bias to snow depth. Therefore, results using HUT model and MEMLS will be compared to see how the observation model will influence the retrieval of snow parameters. The radiometric measurements at 10.65, 18.7, 36.5 and 90 GHz at Sodankyla, Finland will be used as MCMC input, and the statistics of all snow property measurement will be used to calculate the prior information. 43 dry snowpits with complete measurements of all snow parameters will be used for validation. The entire dataset are from NorSREx (Nordic Snow Radar Experiment) experiments carried out by Juha Lemmetyinen, Anna Kontu and Jouni Pulliainen in FMI in 2009-2011 winters, and continued two more winters from 2011 to Spring of 2013. Besides the snow thickness and snow density that are directly related to snow water equivalent, other parameters will be compared with observations, too. For thin snow, the previous studies showed that influence of underlying soil is considerable, especially when the soil is half frozen with part of unfrozen liquid water and part of ice. Therefore, this study will also try to employ a simple frozen soil permittivity model to improve the

  12. 8th International Special Session on Current Trends in Numerical Simulation for Parallel Engineering Environments

    SciTech Connect

    Trinitis, C; Bader, M; Schulz, M

    2009-06-09

    In today's world, the use of parallel programming and architectures is essential for simulating practical problems in engineering and related disciplines. Significant progress in CPU architecture (multi- and many-core CPUs, SMT, transactional memory, virtualization support, shared caches etc.) system scalability, and interconnect technology, continues to provide new opportunities, as well as new challenges for both system architects and software developers. These trends are paralleled by progress in algorithms, simulation techniques, and software integration from multiple disciplines. In its 8th year, ParSim continues to build a bridge between application disciplines and computer science and to help fostering closer cooperations between these fields. Since its successful introduction in 2002, ParSim has established itself as an integral part of the EuroPVM/MPI conference series. In contrast to traditional conferences, emphasis is put on the presentation of up-to-date results with a short turn-around time. We believe that this offers a unique opportunity to present new aspects in this dynamic field and discuss them with a wide, interdisciplinary audience. The EuroPVM/MPI conference series, as one of the prime events in parallel computation, serves as an ideal surrounding for ParSim. This combination enables participants to present and discuss their work within the scope of both the session and the host conference. This year, five papers from authors in five countries were submitted to Par-Sim, and we selected three of them. They cover a range of different application fields including mechanical engineering, material science, and structural engineering simulations. We are confident that this resulted in an attractive special session and that this will be an informal setting for lively discussions as well as for fostering new collaborations. Several people contributed to this event. Thanks go to Jack Dongarra, the EuroPVM/MPI general chair, and to Jan Westerholm, Juha

  13. Extreme weather impacts on European networks of transport

    NASA Astrophysics Data System (ADS)

    Leviakangas, P.

    2012-04-01

    : Pekka Leviäkangas, Anu Tuominen, Riitta Molarius, Heta Kojo, Jari Schabel, Sirra Toivonen, Jaana Keränen, Johanna Ludvigsen, Andrea Vajda, Heikki Tuomenvirta, Ilkka Juga, Pertti Nurmi, Jenni Rauhala, Frank Rehm, Thomas Gerz, Thorsten Muehlhausen, Juha Schweighofer, Silas Michaelides, Matheos Papadakis, Nikolai Dotzek (†), Pieter Groenemeijer.

  14. Feeding the Monster

    NASA Astrophysics Data System (ADS)

    2005-10-01

    central network of filamentary structures spiralling down to the centre. "Our analysis of the VLT/NACO images of NGC 1097 shows that these filaments end up at the very centre of the galaxy", says co-author Juha Reunanen from ESO. "This network closely resembles those seen in computer models", adds co-worker Witold Maciejewski from the University of Oxford, UK. "The nuclear filaments revealed in the NACO images are the tracers of cold dust and gas being channelled towards the centre to eventually ignite the AGN." The astronomers also note that the curling of the spiral pattern in the innermost 300 light-years seem indeed to confirm the presence of a super-massive black hole in the centre of NGC 1097. Such a black hole in the centre of a galaxy causes the nuclear spiral to wind up as it approaches the centre, while in its absence the spiral would be unwinding as it moves closer to the centre. An image of NGC 1097 and its small companion, NGC 1097A, was taken in December 2004, in the presence of Chilean President Lagos with the VIMOS instrument on ESO's Very Large Telescope (VLT). It is available as ESO PR Photo 35d/04. More information This ESO Press Photo is based on research published in the October issue of Astronomical Journal, vol. 130, p. 1472 ("Feeding the Monster: The Nucleus of NGC 1097 at Subarcsecond Scales in the Infrared with the Very Large Telescope", by M. Almudena Prieto, Witold Maciejewski, and Juha Reunanen).

  15. High temporal resolution ecosystem CH4, CO2 and H2O flux data measured with a novel chamber technique

    NASA Astrophysics Data System (ADS)

    Steenberg Larsen, Klaus; Riis Christiansen, Jesper

    2016-04-01

    switching automatically between transparent and darkened mode enabling for separation of light-sensitive and light-indifferent processes in chambers. In a pilot study we measured hourly fluxes of CO2, H2O and CH4 continuously for two weeks in Danish Calluna vulgaris (common heather) heathland (Larsen et al. 2011). We will present an analysis of the novel, high-frequency data of CH4 fluxes under light and dark conditions, assess the advantages and limitations of the experimental setup and recommend future improvements of the technology involved. References: Carter, M.S., Larsen, K.S., et al. 2012. Synthesizing greenhouse gas fluxes across nine European peatlands and shrublands: responses to climatic and environmental changes. Biogeosciences 3739-3755. Christiansen, J.R., Korhonen, J.F.J., et al. 2011. Assessing the effects of chamber placement, manual sampling and headspace mixing on CH4 fluxes in a laboratory experiment. Plant and Soil 343, 171-185. Christiansen, J.R., Outhwaite, J., et al. 2015. Comparison of CO2, CH4 and N2O soil-atmosphere exchange measured in static chambers with cavity ring-down spectroscopy and gas chromatography. Agricultural and Forest Meteorology 211-212, 48-57. Creelman, C., Nickerson, N., Risk, D., 2013. Quantifying Lateral Diffusion Error in Soil Carbon Dioxide Respiration Estimates using Numerical Modeling. Soil Science Society of America Journal 77, 699-708. Larsen, K.S., Andresen, L.C., et al. 2011. Reduced N cycling in response to elevated CO2, warming, and drought in a Danish heathland: Synthesizing results of the CLIMAITE project after two years of treatments. Global Change Biology 17, 1884-1899. Pihlatie, M.K., Christiansen, J.R., et al. 2013. Comparison of static chambers to measure CH4 emissions from soils. Agricultural and Forest Meteorology 171-172, 124-136.

  16. New particle formation events as a source for cloud condensation nuclei in an urban environment

    NASA Astrophysics Data System (ADS)

    Wonaschütz, Anna; Burkart, Julia; Wagner, Robert; Reischl, Georg; Steiner, Gerhard; Hitzenberger, Regina

    2014-05-01

    composition of particles < 100 nm, Atmos. Environ., 54, 583-591, doi: 10.1016/j.atmosenv.2012.01.063, 2012. Kerminen V.-M., Paramonov, M., Anttila, T., Riipinen, I., Fountoukis, C., Korhonen, H., Asmi, E., Laakso, L., Lihavainen, H., Swietlicki, E., Svenningsson, B., Asmi, A., Pandis, S. N., Kulmala, M., and Petäjä, T.: Cloud condensation nuclei production associated with atmospheric nucleation: a synthesis based on existing literature and new results, Atmos. Chem. Phys., 12, 12037-12059, doi: 10.5194/acp-12-12037-2012, 2012. Levin, E. J. T., Prenni, A. J., Petters, M. D., Kreidenweis, S. M., Sullivan, R. C., Atwood, S. A., Ortega, J., DeMott, P. J., and Smith, J. N.: An annual cycle of size-resolved aerosol hygroscopicity at a forested site in Colorado, J. Geophys. Res., 117, 06201, doi:10.1029/2011JD016854, 2012. Matsui, H., Koike, M., Kondo, Y., Takegawa, N., Wiedensohler, A., Fast, J. D., and Zaveri, R. A.: Impact of new particle formation on the concentrations of aerosols and cloud condensation nuclei around Beijing, J. Geophys. Res., 116, 19208, doi:10.1029/2011JD016025, 2011.

  17. Lithological 3D grid model of the Vuonos area built by using geostatistical simulation honoring the 3D fault model and structural trends of the Outokumpu association rocks in Eastern Finland

    NASA Astrophysics Data System (ADS)

    Laine, Eevaliisa

    2015-04-01

    ., Jokinen, J., Koistinen, E., Kontinen, A., Korhonen, J., Korpisalo, J., Kurimo, M.,Lahti, I., Laine, E., Levaniemi, H., Sorjonen-Ward, P. & Torppa, J. 2014. Developing deep exploration methods in the Outokumpu Mining Camp area. In: Lauri, L. S., Heilimo, E., Levaniemi, H., Tuusjarvi, M., Lahtinen, R. & Holtta, P. (eds) Current Research: 2nd GTK Mineral Potential Workshop, Kuopio, Finland, May 2014. Geological Survey of Finland,Report of Investigation 207. Koistinen, T. J., 1981. Structural evolution of an early Proterozoic strata-bound Cu-Co-Zn deposit, Outokumpu, Finland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 72, pp. 115-158. Kontinen,A., 1987.An early Proterozoic ophiolite -- the Jormuamafic-ultramafic complex, northern Finland. Precambrian Research 35, 313-341. Peltonen, P. & Kontinen, A. 2004. The Jormua Ophiolite: a mafic-ultramafic complex from an ancient ocean-continent transition zone. In: Precambrian ophiolites and related rocks. Developments in Precambrian geology 13. Amsterdam: Elsevier, 35-71. Saalmann, K.; Laine, E.L, 2014. Structure of the Outokumpu ore district and ophiolite-hosted Cu-Co-Zn-Ni-Ag-Au sulfide deposits revealed from 3D modeling and 2D high-resolution seismic reflection data. Ore Geology Reviews, Volume 62, October 2014, Pages 156-180. Vuollo, J., and Piirainen, T., 1989. Mineralogical evidence for an ophiolite from the Outokumpu serpentinites in North Karelia, Finland. Bulletin of the Geological Society of Finland 61, 95-112.

  18. Vaginal estradiol use and the risk for cardiovascular mortality.

    PubMed

    Mikkola, Tomi S; Tuomikoski, Pauliina; Lyytinen, Heli; Korhonen, Pasi; Hoti, Fabian; Vattulainen, Pia; Gissler, Mika; Ylikorkala, Olavi

    2016-04-01

    applied for local regimens containing conjugated equine estrogens, because they are absorbed differently and may show effects that differ from those of estradiol. In 1000 women using VE for up to 10 years, a maximum of 24 fewer CHD deaths and 18 fewer stroke deaths is likely to occur. This work was supported by unrestricted grants from the Päivikki and Sakari Sohlberg Foundation, the Emil Aaltonen Foundation, the Finnish Medical Foundation, Finska Läkaresällskapet, the Orion Farmos Research Foundation, the Paavo Nurmi Foundation and a special governmental grant for health sciences research. The funding sources had no role in the study design, data handling or manuscript preparation. EPID Research is a company that performs financially supported studies for several pharmaceutical companies. Dr Korhonen, Dr Hoti and MSc Vattulainen, employed by Epid Research, report financial activities from several other pharmaceutical companies outside the submitted work. Dr Mikkola has been a speaker and/or received consulting fees from Mylan and Novo Nordisk. Dr Tuomikoski has been a speaker and/or received consulting fees from Orion and Mylan. The remaining authors report no conflict of interest. © The Author 2016. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  19. The Effect of Pollution on Newly-Formed Particle Composition in Boreal Forest

    NASA Astrophysics Data System (ADS)

    Vaattovaara, Petri

    2010-05-01

    Petri Vaattovaara (1), Tuukka Petäjä (2), Jorma Joutsensaari (1), Pasi Miettinen (1), Boris Zaprudin (1,6), Aki Kortelainen (1), Juha Heijari (3,7), Pasi Yli-Pirilä (3), Pasi Aalto (2), Doug R. Worsnop (4), and Ari Laaksonen(1,5) (1) University of Eastern Finland, Finland (2) University of Helsinki, Finland (3) University of Eastern Finland, Finland (4) Aerodyne Research Inc., USA (5) Finnish Meteorological Institute, Finland (6) Currently at University of Turku, Finland (7) Currently at Maritime Research Centre, Finland Email address of the Corresponding author: Petri.Vaattovaara@uef.fi The geographical extent of the tropical, temperate and boreal forests is about 30% of the Earth's land surface. Those forests are located around the world in different climate zones effecting widely on atmospheric composition via new particle formation. The Boreal forests solely cover one third of the forests extent and are one of the largest vegetation environments, forming a circumpolar band throughout the northern hemisphere continents, with a high potential to affect climate processes [1]. In order to more fully understand the possible climatic effects of the forests, the properties of secondary organic aerosols (SOA) in varying conditions (e.g. a change in meteorological parameters or in the concentrations of biogenic and antropogenic trace gases) need to be better known. In this study, we applied the UFO-TDMA (ultrafine organic tandem differential mobility analyzer [2]) and the UFH-TDMA (ultrafine hygroscopicity tandem differential mobility analyzer [3]) methods parallel to shed light on the evolution of the nucleation and Aitken mode particle compositions (via physic-chemical properties) at a virgin boreal forest site in varying conditions. The measurements were carried out at Hyytiälä forest station in Northern Europe (Finland) during 15 spring nucleation events. We also carried out a statistical analysis using linear correlations in order to explain the variability in

  20. CALL FOR PAPERS: Special issue on Renormalization Group 2005

    NASA Astrophysics Data System (ADS)

    Honkonen, Juha; Kazakov, Dmitri; Diehl, Hans Werner

    2005-10-01

    This is a call for contributions to a special issue of Journal of Physics A: Mathematical and General dedicated to the subject of the Renormalization Group as featured in the international workshop Renormalization Group 2005, Helsinki, Finland 30 August-3 September 2005 (http://theory.physics.helsinki.fi/~rg2005/). Participants at that meeting as well as other researchers working in the field are invited to submit a research paper to this issue. The Editorial Board has invited Juha Honkonen, Dmitri Kazakov and Hans Werner Diehl to serve as Guest Editors for the special issue. Their criteria for acceptance of contributions are as follows: The subject of the paper should relate to the subject of the workshop. Contributions will be refereed and processed according to the usual procedure of the journal. Conference papers may be based on already published work but should eithercontain significant additional new results and/or insights orgive a survey of the present state of the art, a critical assessment of the present understanding of a topic, and a discussion of open problems Papers submitted by non-participants should be original and contain substantial new results. The guidelines for the preparation of contributions are as follows: The DEADLINE for submission of contributions is 1 December 2005. This deadline will allow the special issue to appear in June 2006. There is a nominal page limit of 16 printed pages per contribution. For papers exceeding this limit, the Guest Editors reserve the right to request a reduction in length. Further advice on publishing your work in Journal of Physics A: Mathematical and General may be found at www.iop.org/Journals/jphysa. Contributions to the special issue should, if possible, be submitted electronically by web upload at www.iop.org/Journals/jphysa or by e-mail to jphysa@iop.org, quoting `JPhysA Special Issue—Renormalization Group 2005'. Submissions should ideally be in standard LaTeX form. Please see the web site for further

  1. Formation and growth rates of atmospheric nanoparticles: four years of observations at two West Siberian stations

    NASA Astrophysics Data System (ADS)

    Arshinov, Mikhail Yu.; Belan, Boris D.; Davydov, Denis K.; Kozlov, Artem V.; Arshinova, Victoria

    2015-04-01

    the Ministry of Education and Science of Russia No. 14.604.21.0100, (RFMTFIBBB210290) and No. 14.613.21.0013 (RFMEFI61314X0013); and Russian Foundation for Basic Research (grant No. 14-05-00590). Dal Maso, M., Kulmala, M., Riipinen, I., Wagner, R., Hussein, T., Aalto, P. P., and Lehtinen, K. E. J. (2005). Formation and growth of fresh atmospheric aerosols: eight years of aerosol size distribution data from SMEAR II, Hyytiälä, Finland, Boreal Environ. Res. 10, 323-336. Dal Maso, M., Sogacheva, L., Aalto, P., Riipinen, I., Komppula, M., Tunved, P., Korhonen, L., Suur-uski, V., Hirsikko, A., Kurten, T., Kerminen, V., Lihavainen, H., Viisanen, Y., Hansson, H., and Kulmala, M. (2007). Aerosol size distribution measurements at four Nordic field stations: identification, analysis and trajectories analysis of new particle formation bursts, Tellus B 59, 350-361. Hamed, A., Joutsensaari, J., Mikkonen, S., Sogacheva, L., Dal Maso, M., Kulmala, M., Cavalli F., Fuzzi S., Facchini, M. C., Decesari, S., Mircea, M., Lehtinen, K. E. J., and Laaksonen, A. (2007). Nucleation and growth of new particles in Po Valley, Italy, Atmos. Chem. Phys. 7, 355-376. Hirsikko, A., Nieminen, T., Gagné, S., Lehtipalo, K., Manninen, H. E., Ehn, M., Hõrrak, U., Kerminen, V.-M., Laakso, L., McMurry, P. H., Mirme, A., Mirme, S., Petäjä, T., Tammet, H., Vakkari, V., Vana, M., and Kulmala, M. (2011). Atmospheric ions and nucleation: a review of observations, Atmos. Chem. Phys. 11, 767-798. Kulmala, M., Vehkamäki, H., Petäjä, T., Dal Maso, M., Lauri A., Kerminen, V.-M., Birmili, W., and McMurry, P. H. (2004a) Formation and growth rates of ultrafine atmospheric particles: a review of observations, J. Aerosol Science 35, 143-176.

  2. MIRAS characterization and monitoring during the SMOS In-Orbit Commissioning Phase

    NASA Astrophysics Data System (ADS)

    Corbella, I.; Torres, F.; Martin-Neira, M.; Duffo, N.; González-Gambau, V.; Camps, A.; Vall-Llossera, M.

    2009-04-01

    for the in-orbit commissioning phase. The tool can ingest raw data from the electronic ground support equipment (EGSE) developed by the instrument manufacturer and also from the nominal level 0 data provided by the SMOS ground segment data acquisition system. The software classifies the input data and applies the calibration procedures to produce calibrated visibility and brightness temperature. Most of the intermediate results, including raw data and calibration parameters, are saved in files for further analysis and processing. The processing has been optimized for speed so that the results are produced in near real time and it is designed to process large amount of data in a continuous way. Finally, the tool includes a user-friendly graphics interface that allows selecting specific data according to different parameters (baselines or receivers, modes of operation or others). 4 Conclusions During the SMOS In-Orbit Commissioning Phase, a number of tests will be carried out in order to check the payload MIRAS operation and fully characterize it in terms of data consistency and calibration parameters. The UPC team is in charge of analyzing the data and develop the procedures to verify that the final data meets the required specifications. The procedures for this have been summarized and will be presented at the conference in more detail. References [1] Michael Brown, "SMOS in-orbit commissioning phase plan," Tech. Rep. SO-PL-ESA-SYS-5505, issue 1.1, ESA-ESTEC, The Netherlands, 8 August 2008. [2] Ignasi Corbella, Francesc Torres, Nuria Duffo, Manuel Martín-Neira, Verónica González, Adriano Camps, and Mercè Vall-llossera, "MIRAS ground characterization," in 10th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment - Rad 2008, Florence, Italy, 11-14 March 2008, Istituto di Fisica Applicata "N.Carrara" (IFAC-CNR), pp. 1-4. [3] Manuel Martín-Neira, Martin Suess, and Juha Kainulainen, "The flat target transformation," IEEE Transactions on

  3. SINFONI Opens with Upbeat Chords

    NASA Astrophysics Data System (ADS)

    2004-08-01

    the development of SINFONI for nearly 7 years. Some of the members of the Commissioning Teams are depicted in PR Photos 24g/04 and 24h/04; in addition to the SPIFFI team members present on the second photo, Walter Bornemann, Reinhard Genzel, Hans Gemperlein, Stefan Huber have also been working on the reintegration/commissioning in Paranal. Notes [1] This press release is issued in coordination between ESO, the Max-Planck-Institute for Extraterrestrial Physics (MPE) in Garching, Germany, and the Nederlandse Onderzoekschool Voor Astronomie in Leiden, The Netherlands. A German version is available at http://www.mpg.de/bilderBerichteDokumente/dokumentation/pressemitteilungen/2004/pressemitteilung20040824/index.html and a Dutch version at http://www.astronomy.nl/inhoud/pers/persberichten/30_08_04.html. [2] The SINFONI team consists of Roberto Abuter, Andrew Baker, Walter Bornemann, Ric Davies, Frank Eisenhauer (SPIFFI Principal Investigator), Hans Gemperlein, Reinhard Genzel (MPE Director), Andrea Gilbert, Armin Goldbrunner, Matthew Horrobin, Stefan Huber, Christof Iserlohe, Matthew Lehnert, Werner Lieb, Dieter Lutz, Nicole Nesvadba, Claudia Röhrle, Jürgen Schreiber, Linda Tacconi, Matthias Tecza, Niranjan Thatte, Harald Weisz (Max-Planck-Institut für Extraterrestrische Physik, Garching, Germany), Anthony Brown, Paul van der Werf (NOVA, Leiden, The Netherlands), Eddy Elswijk, Johan Pragt, Jan Kragt, Gabby Kroes, Ton Schoenmaker, Rik ter Horst (ASTRON, Dwingeloo, The Netherlands), Henri Bonnet (SINFONI Project Manager), Roberto Castillo, Ralf Conzelmann, Romuald Damster, Bernard Delabre, Christophe Dupuy, Robert Donaldson, Christophe Dumas, Enrico Fedrigo, Gert Finger, Gordon Gillet, Norbert Hubin (Head of Adaptive Optics Dept.), Andreas Kaufer, Franz Koch, Johann Kolb, Andrea Modigliani, Guy Monnet (Head of Telescope Systems Division), Chris Lidman, Jochen Liske, Jean Louis Lizon, Markus Kissler-Patig (SINFONI Instrument Scientist), Jerome Paufique, Juha Reunanen