Science.gov

Sample records for nicolae popovici oleg

  1. Frombork Castle and Nicolas Copernicus

    NASA Astrophysics Data System (ADS)

    Kogure, Tomokazu

    2004-10-01

    Nicolas Copernicus spent his last half life at Frombork Castle in Poland, where he wrote "On the Revolution of the Celestial Bodies." The author visited Frombork and had a strong impression by his great personality in late Renaissance, not only in astronomy, but also in activities in a wide field of economical, political affaires, renovation of currency.

  2. An Alternate Route to Talent Development in Science: An Interview with Oleg Davydenko.

    ERIC Educational Resources Information Center

    Subotnik, Rena F.

    1995-01-01

    This interview with Oleg Davydenko, a geneticist in Belarus who also runs a club for adolescents interested in genetics, addresses his work, the origins of the club, self-selection by students, characteristics of the best student members, the club's financial support, his own development as a youth, and the role of contests like the Olympiads. (DB)

  3. Wind resource assessment: San Nicolas Island, California

    SciTech Connect

    McKenna, E.; Olsen, T.L.

    1996-01-01

    San Nicolas Island (SNI) is the site of the Navy Range Instrumentation Test Site which relies on an isolated diesel-powered grid for its energy needs. The island is located in the Pacific Ocean 85 miles southwest of Los Angeles, California and 65 miles south of the Naval Air Weapons Station (NAWS), Point Mugu, California. SNI is situated on the continental shelf at latitude N33{degree}14` and longitude W119{degree}27`. It is approximately 9 miles long and 3.6 miles wide and encompasses an area of 13,370 acres of land owned by the Navy in fee title. Winds on San Nicolas are prevailingly northwest and are strong most of the year. The average wind speed is 7.2 m/s (14 knots) and seasonal variation is small. The windiest months, March through July, have wind speeds averaging 8.2 m/s (16 knots). The least windy months, August through February, have wind speeds averaging 6.2 m/s (12 knots).

  4. Nicolas and Eel submarine fans, California continental borderland

    SciTech Connect

    Reynolds, S.; Gorsline, D.S.

    1987-04-01

    Nicolas and Eel Submarine Fans occur in the San Nicolas basin - an outer basin of the California continental borderland that has a low sedimentation rate. Nicolas Fan lies southeast of San Nicolas Island and the broad San Nicolas Bank. The upper fan is characterized by numerous channels. The midfan region may be divided into three distinct areas: a central midfan and two subfans. The central midfan deposition system is typical of Normark's suprafan. The subfans are essentially flat, sandy lobes. Eel Fan lies west of San Clemente Island and is fed by an erosional valley. Its midfan region may also be characterized as a flat, sandy lobe. Box-core data show that holocene turbidity currents have occurred on the central Nicolas Fan, whereas the subfans and Eel Fan are nearly inactive. The local tectonic regime influences these fans by determining slope trends, creating bathymetric obstacles, controlling canyon location, and triggering mass movements. Sea level changes affect sedimentation patterns of the fans by increasing the mean grain size and the amount of sediment delivered to the fan during lowstands. These changes may, in turn, affect the morphology of the fan. The characteristics of these fans represent variations of the generalized fan models described in the literature. 12 figures, 1 table.

  5. 33 CFR 334.980 - Pacific Ocean; around San Nicolas Island, Calif., naval restricted area.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Pacific Ocean; around San Nicolas....980 Pacific Ocean; around San Nicolas Island, Calif., naval restricted area. (a) The area. The waters of the Pacific Ocean around San Nicolas Island, Calif., extending about 3 miles seaward from...

  6. 33 CFR 334.980 - Pacific Ocean; around San Nicolas Island, Calif., naval restricted area.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Pacific Ocean; around San Nicolas....980 Pacific Ocean; around San Nicolas Island, Calif., naval restricted area. (a) The area. The waters of the Pacific Ocean around San Nicolas Island, Calif., extending about 3 miles seaward from...

  7. 33 CFR 334.980 - Pacific Ocean; around San Nicolas Island, Calif., naval restricted area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Pacific Ocean; around San Nicolas....980 Pacific Ocean; around San Nicolas Island, Calif., naval restricted area. (a) The area. The waters of the Pacific Ocean around San Nicolas Island, Calif., extending about 3 miles seaward from...

  8. 33 CFR 334.980 - Pacific Ocean; around San Nicolas Island, Calif., naval restricted area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Pacific Ocean; around San Nicolas....980 Pacific Ocean; around San Nicolas Island, Calif., naval restricted area. (a) The area. The waters of the Pacific Ocean around San Nicolas Island, Calif., extending about 3 miles seaward from...

  9. Digital Radio-Telemetry Monitoring of San Nicolas Island Foxes

    DTIC Science & Technology

    2008-12-01

    canine distemper and rabies). *Set up...adults that died were killed directly by human activity, while multiple factors contributed to the deaths of old adults (table 4). Unfortunately, two...San Nicolas and San Clemente Islands against rabies and canine distemper . We suggest that a core group of monitored foxes remain unvaccinated to

  10. [Three contracts signed by the apothecary Nicolas Houel in 1586].

    PubMed

    Warolin, C

    1998-01-01

    Nicolas Houel famous apothecary founder of the House of the Christian Charity, near Paris, in the 16th Century, welcomed poor children for six years. The author has found two reception contracts and a settlement act to the Foundation signed by Houel in 1586.

  11. Nicola gen. nov. with redescription of Nicola tetela (Borojevic & Peixinho, 1976) (Porifera: Calcarea: Calcinea: Clathrinida).

    PubMed

    Cóndor-Luján, B; Klautau, M

    2016-04-13

    Guancha tetela was originally described as a species having a peduncle and a skeleton exclusively composed of sagittal triactines. Therefore, according to the most recent phylogeny of Clathrinida, it should be placed in the genus Clathrina. This species was collected on the Northeastern Brazilian coast in 1968 and it was not collected again until 2011 in Curaçao. In this study, we reanalyzed the type material and the new specimens from Curaçao under a morphological-molecular approach. Morphological analysis revealed the presence of tetractines in the skeleton of all the studied specimens, including a slide of the holotype. In the molecular phylogeny G. tetela grouped with genera containing tetractines, but as an independent new lineage, different from all the other genera of Clathrinida. Based on these results, we propose the erection of a new genus, Nicola gen. nov., to include species whose body is composed of tubes without anastomosis nor branches but that run in parallel and coalesce at the apical and basal regions. Moreover, the skeleton is exclusively composed of sagittal triactines and tetractines.

  12. 33 CFR 110.220 - Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 1 2014-07-01 2014-07-01 false Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. 110.220 Section 110.220 Navigation and Navigable Waters COAST... Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. (a) The restricted area....

  13. 33 CFR 110.220 - Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 1 2013-07-01 2013-07-01 false Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. 110.220 Section 110.220 Navigation and Navigable Waters COAST... Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. (a) The restricted areas—(1)...

  14. 33 CFR 110.220 - Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 1 2012-07-01 2012-07-01 false Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. 110.220 Section 110.220 Navigation and Navigable Waters COAST... Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. (a) The restricted areas—(1)...

  15. Indian Control of Indian Education: The Path of the Upper Nicola Band.

    ERIC Educational Resources Information Center

    Charters-Voght, Opal

    1991-01-01

    Describes a structured-experiences workshop in which members of the Upper Nicola Band (Okanagan) defined Indian control of Indian education for their own community, and formulated their educational philosophy, goals, and action plans. Provides background on Canadian federal educational policies and the history of education for the Upper Nicola.…

  16. 33 CFR 110.220 - Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. 110.220 Section 110.220 Navigation and Navigable Waters COAST... Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. (a) The restricted areas—(1)...

  17. 33 CFR 110.220 - Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 1 2011-07-01 2011-07-01 false Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. 110.220 Section 110.220 Navigation and Navigable Waters COAST... Pacific Ocean at San Nicolas Island, Calif.; restricted anchorage areas. (a) The restricted areas—(1)...

  18. Legends about Legends: Abraham Eleazar's Adaptation of Nicolas Flamel.

    PubMed

    Priesner, Claus

    2016-02-01

    This paper explores the relationship between three illustrated alchemical treatises, all of which are associated with Jewish adepts: the famous Le Livre des figures hieroglyphiques attributed to Nicolas Flamel, and two treatises published in 1735 in Erfurt-the Uraltes Chymisches Werckh and the Donum Dei. The Werckh is supposedly written by Rabbi Abraham Eleazar, while the Donum Dei is attributed to an ancient alchemist-cabalist, Rabbi Samuel Baruch. I argue that these authors are fictitious, and that both works were in fact written in the early eighteenth century by their supposed editor, the probably pseudonymous Julius Gervasius. Gervasius connects the Werckh with the legend of Nicolas Flamel by suggesting that it is based on the original, Jewish manuscript which helped Flamel to find the Stone of the Sages. Gervasius used various strategies to confer a sense of Jewish "authenticity" on these works, borrowing from contemporary (non-Jewish) perceptions of Jewish ritual, Hebrew language, and Christian Cabala. The Werckh also borrows and adapts a sequence of allegorical illustrations from those in pseudo-Flamel's Livre, and I compare the two sets of figures and, where possible, interpret them. I conclude that the later works in fact teach us far more about the state of alchemy in the seventeenth and eighteenth centuries than they do about either medieval alchemy or Judaism.

  19. Hybrid energy system cost analysis: San Nicolas Island, California

    SciTech Connect

    Olsen, T.L.; McKenna, E.

    1996-07-01

    This report analyzes the local wind resource and evaluates the costs and benefits of supplementing the current diesel-powered energy system on San Nicolas Island, California (SNI), with wind turbines. In Section 2.0 the SNI site, naval operations, and current energy system are described, as are the data collection and analysis procedures. Section 3.0 summarizes the wind resource data and analyses that were presented in NREL/TP 442-20231. Sections 4.0 and 5.0 present the conceptual design and cost analysis of a hybrid wind and diesel energy system on SNI, with conclusions following in Section 6. Appendix A presents summary pages of the hybrid system spreadsheet model, and Appendix B contains input and output files for the HYBRID2 program.

  20. Annual Quality Assurance Conference Files by Nicola Watson and Rui Li

    EPA Pesticide Factsheets

    26th Annual Quality Assurance Conference. Abstract: An Innovative Water Management Device for Online and Canister-based Thermal Desorption of Trace-level VVOCs in High Humidity Ambient Air by Nicola Watson and Rui Li

  1. Winds and turbulence above San Nicolas Island during FIRE

    NASA Technical Reports Server (NTRS)

    White, Allen B.; Syrett, William J.; Fairall, Christopher W.; Thomson, Dennis W.

    1990-01-01

    Winds and turbulence above San Nicolas Island (SNI) were continuously monitored during the First ISCCP Regional Experiment (FIRE) with a Doppler sodar (1600 Hz) and an ultrahigh frequencies (UHF) (400 MHz) wind profiler. Individual profiles were logged from 1 through 19 July 1987 at 30 sec to 2 min intervals; preliminary processing of hourly averaged winds from 100 to 2300 m is complete. These wind profiles have been combined with intermittent radiosonde profiles to construct time-height sections of parameters such as the Richardson Number. Analysis now in progress includes interpretation of the sodar (C 2/T) and profiler (C 2/N, C 2/q) reflectivity profiles. These profiles are being combined with radiometric and ceilometer data for investigations of vertical transport and cloud base/top entrainment processes. Finally, by using the SNI data in conjunction with soundings made from the research vessel Pt. Sur, the relationship between changes in the SNI winds and mesoscale and synoptic-scale weather features is being investigated.

  2. Supersonic naval missile sounds over San Nicolas Island

    NASA Astrophysics Data System (ADS)

    Greene, Charles R.; Norman, Robert G.; Holst, Meike; Malme, Charles I.

    2003-10-01

    Vandals and other missiles are launched occasionally from San Nicolas Island, CA, during Naval exercises and tests. Pinnipeds on the island beaches are exposed to the flight sounds, some of which are sonic booms from directly overhead. Environmental concerns led the Navy to support acoustic studies of the missile sounds at the beaches. The results show flat-weighted sound pressures from Vandals as high as 150 dB re: 20 μPa(peak) [140 dB re: 20 μPa(rms)] at a near-vertical distance of 400 m. Other flat-weighted pressures from Vandals were as low as 107 dB re: 20 μPa(peak) [95 dB re: 20 μPa(rms)] at a beach 3.9 km horizontally behind the launcher. Pulse durations and sound exposure levels were also measured. One-third octave band sound exposure levels were measured. All parameters (except one-third octave band levels) were also measured with A weighting. Other missiles measured include Tomahawk cruise missiles, Rolling Airframe Missile, Advanced Gun System, Terrier, and the Supersonic Sea-Skimming Target. [Work supported by U.S. Navy.

  3. [The anatomy Lesson of Dr. Nicolaes Tulp: The beginning of a medical utopia].

    PubMed

    Rosler, Roberto; Young, Pablo

    2011-04-01

    The Anatomy Lesson of Dr. Nicolaes Tulp was painted by Rembrandt Harmen-szoon van Rijn at the early age of 26 years. In the XVII century these paintings were very popular in the Netherlands, and in this country the cities flourished as cultural centers searching the anatomy knowledge. Nicolaes Tulp was one of the persons in the center of Amsterdam's scene during XVII century. In 1632 Tulp was 39 years old, and he was an anatomist and a surgeon. Rembrandt masterly shows an autopsy performed by Dr. Tulp. This picture is the description of the beginning of a medical intellectual utopia: the absolute visibility of the disease. Unfortunately this utopia is blind to the complete visibility of the psycho-socio-cultural dimensions of the ill.

  4. Magnetic stratigraphy and biostratigraphy of the Piacenzian (Upper Pliocene) at Monte San Nicola (Sicily)

    SciTech Connect

    Channell, J.E.T.; Sprovieri, R.; Di Stefano, E.

    1985-01-01

    During the Neogene, the Mediterranean was a rather unique biogeographic province. For this reason, first and last occurrences of Neogene species recorded in the Mediterranean region may not be synchronous with those recorded in the open oceans. This has important implications as most of the Neogene stage boundaries are defined on the basis of Mediterranean type sections. The most direct way to determine the relative timing of Mediterranean and open ocean datums is through correlation with the polarity time scale. Such correlations are not available for the Mediterranean Pliocene. The Trubi pelagic limestones and Monte narbone marls which characterize the SicilianPliocene are not ideal for magnetic stratigraphy due to weak remnant intensities and an ubiquitous normal polarity overprint. However, at Monte San Nicola, a magnetic stratigraphy has been resolved by stepwise demagnetization in small temperature increments. The upper and lower bounds of the Gauss Epoch, and the Mammoth and Kaena polarity events can be correlated to well defined planktonic foraminiferal and calcareous nannofossil datums. Hence the synchronism of these datums between the Mediterranean and the open ocean can be tested. The most notable discrepancy is in the last occurrence of G. margaritae which occurs at the base of the Gauss in most open marine sections, but is found at the top of the Gilbert at Monte San Nicola.

  5. A multi-decade time series of kelp forest community structure at San Nicolas Island, California

    USGS Publications Warehouse

    Lafferty, Kevin D.; Kenner, Michael C.; Estes, James A.; Tinker, M. Tim; Bodkin, James L.; Cowen, Robert K.; Harrold, Christopher; Novak, Mark; Rassweiler, Andrew; Reed, Daniel C.

    2013-01-01

    San Nicolas Island is surrounded by broad areas of shallow subtidal habitat, characterized by dynamic kelp forest communities that undergo dramatic and abrupt shifts in community composition. Although these reefs are fished, the physical isolation of the island means that they receive less impact from human activities than most reefs in Southern California, making San Nicolas an ideal place to evaluate alternative theories about the dynamics of these communities. Here we present monitoring data from seven sampling stations surrounding the island, including data on fish, invertebrate, and algal abundance. These data are unusual among subtidal monitoring data sets in that they combine relatively frequent sampling (twice per year) with an exceptionally long time series (since 1980). Other outstanding qualities of the data set are the high taxonomic resolution captured and the monitoring of permanent quadrats and swaths where the history of the community structure at specific locations has been recorded through time. Finally, the data span a period that includes two of the strongest ENSO events on record, a major shift in the Pacific decadal oscillation, and the reintroduction of sea otters to the island in 1987 after at least 150 years of absence. These events provide opportunities to evaluate the effects of bottom-up forcing, top-down control, and physical disturbance on shallow rocky reef communities.

  6. Diurnal variation of marine stratocumulus over San Nicolas Island during July 1987

    NASA Technical Reports Server (NTRS)

    Blaskovic, Miriam; Davies, Roger; Snider, J. B.

    1991-01-01

    A study is presented of surface measurements made at San Nicolas Island during the intensive field observation marine stratocumulus phase of the First International Satellite Cloud Climatology Program Regional Experiment, July 1987, to retrieve the average diurnal variation of marine stratocumulus and associated surface variables. The diurnal behavior of the cloud base appears to be consistent with model-predicted uncoupling of the cloud layer and the subcloud layer as the turbulent flux of moisture is limited by solar heating close to the cloud base. Also, variation in surface air temperature is consistent with the limitation of the turbulent flux of heat between the two layers, screening the surface from the effect of longwave cooling from the cloud top.

  7. Dynamics and distribution of black abalone populations at San Nicolas Island

    USGS Publications Warehouse

    VanBlaricom, Glenn R.; Hochberg, F.G.

    1993-01-01

    Dense populations of black abalones (Haliotis cracherodii Leach) were monitored in permanent intertidal plots at nine sites on San Nicolas Island from 1981 through 1990. Densities were essentially constant at all four sites along the north shore of the island throughout the study period. Densities at five sites along the south shore were more variable, possibly reflecting asynchronous variation in recruitment, mortality resulting from wave disturbance, and removal by people. Temporal variation of abalone densities apparently was not influenced by sea otters or abalone withering syndrome during this study. Abalones were strongly aggregated in space. Highest densities occurred in areas of irregular substrata, apparently as a result of preference for crevices and vertical faces. The locations of dense patches were persistent in time.

  8. Annual and Spatial Variation of the Kelp Forest Fish Assemblage at San Nicolas Island, California

    USGS Publications Warehouse

    Cowen, R.J.; Bodkin, J.L.

    1993-01-01

    The kelp forest fishes of San Nicolas Island, California were studied from 1981-1986 to examine the causes of among-site and among-year variation in the fish assemblages. Fish counts and seven physical and biological variables were recorded at six sites around the island every spring and fall. Over the study period, a total of 45 fish species from 18 families were recorded, though members of nive families dominated at all sites. Among-site variation was considereable with two sites on the south side of the island having two to four times as many non-schooling fishes as the other four sites. Three variables, based on stepwise multiple regression techniques, were important predictors of site-specific fish abundance: 1) vertical relief; 2) sand cover and 3) understory algal cover. The total number of fishes varied interannually by a factor of three. Due to recruitment occuring each spring, there was a strong seasonal component to the variation in fish abundance. The extent of seasonal and interannual variaton of fish abundance is an indication of the variable nature of recruitment to this area. Over the 6 yr period, there were three distinct groupings of fish assemblages correspondong to pre- (Fall 1981 - Fall 1982), during spring (Spring 1983 - Spring 1984) and post El Nino (Fall 1984 - Fall 1986) sampling dates. During El Nino sampling period, there was considerable recruitment of southern affinity fish species, increasing both the abundance and diversity of the fish assemblages. Large-scale oceanographic processes, coupled with site-specific features of the reef habitat, produce a moderately diverse, though relatively abundant fish fauna at San Nicolas Island.

  9. Status of the Island Night Lizard and Two Non-Native Lizards on Outlying Landing Field San Nicolas Island, California

    USGS Publications Warehouse

    Fellers, Gary M.; Drost, Charles A.; Murphey, Thomas G.

    2008-01-01

    More than 900 individually marked island night lizards (Xantusia riversiana) were captured on San Nicolas Island, California, between 1984 and 2007 as part of an ongoing study to monitor the status of this threatened species. Our data suggest that at least a few lizards are probably more than 20 years old, and one lizard would be 31.5 years old if it grew at an average rate for the population. Ages of 20 and 30 years seem reasonable given the remarkably slow growth during capture intervals of more than a decade for five of the lizards which we estimated to be 20 or more years old. Like other lizards, island night lizard growth rates vary by size, with larger lizards growing more slowly. In general, growth rates were somewhat greater on San Nicolas Island (compared with Santa Barbara Island), and this increase was sustained through all of the intermediate size classes. The higher growth rate may account for the somewhat larger lizards present on San Nicolas Island, although we cannot discount the possibility that night lizards on San Nicolas are merely living longer. The high percentage of small lizards in the Eucalyptus habitat might seem to reflect a healthy population in that habitat, but the high proportion of small lizards appears to be caused by good reproduction in the 1900s and substantially poorer reproduction in subsequent years. The Eucalyptus habitat has dried quite a bit in recent years. Night lizards in the Haplopappus/Grassland habitat have shown an increase in the proportion of larger lizards since 2000. There has also been an increase in the proportion of large lizards in the Rock Cobble habitat at Redeye Beach. However, there are has been some change in habitat with more elephant seals occupying the same area just above the high tide as do the night lizards. Southern alligator lizards and side-blotched lizards are both non-native on San Nicolas Island. Neither lizard causes obvious harm to island night lizards, and management time and effort should

  10. [Pierre-François Nicolas (1743-1816), apothecary, physician, chemistry teacher on the eve of the French Revolution].

    PubMed

    Labrude, Pierre

    2002-01-01

    Pierre-François Nicolas, was born in Saint-Mihiel in 1743, studied in this town and in St-Nicolas-de-Port near Nancy. At first he has been a military apothecary during the "Guerre de Sept-Ans". Then he studied pharmacy in Nancy and was received in 1768 at the "Maîtrise de pharmacie". With the physician Henri Michel du Tennatar, he created a teaching of chemistry for medicine students and became the professor of chemistry of the Faculty of Medicine in 1781. During these years, he published some research results about hydrology, distillery, biochemistry (phosphorus in bone), toxicology, dyeing... At the end of 1783, he succeeded in the realization of a balloon and he played an important part in Nancy during the French Revolution. Professor at the "Ecole de médecine" in Strasbourg for some weeks, then in Nancy at the "Ecole centrale" and at the "Société de santé", he left Nancy towards the mid-1798. Staying in Paris for two or three years he probably worked with Fourcroy and perhaps Chaptal and Berthollet. In the early years of the nineteenth century he was appointed professor in the "Ecole centrale" du Calvados" and some years after at the "Faculté des sciences" in Caen. His latest significant work with Gueudeville was devoted to the detection of sugar in the urine of diabetic patients. Retired in 1811 Pierre-François Nicolas died in Caen in 1816.

  11. Evidence of repeated wildfires prior to human occupation on San Nicolas Island, California

    USGS Publications Warehouse

    Pigati, Jeffrey S.; McGeehin, John P.; Skipp, Gary L.; Muhs, Daniel R.

    2014-01-01

    Understanding how early humans on the California Channel Islands might have changed local fire regimes requires a baseline knowledge of the frequency of natural wildfires on the islands prior to human occupation. A sedimentary sequence that was recently discovered in a small canyon on San Nicolas Island contains evidence of at least 24 burn events that date to between ~37 and 25 ka (thousands of calibrated 14C years before present), well before humans entered North America. The evidence includes abundant macroscopic charcoal, blackened sediments, and discrete packages of oxidized, reddish-brown sediments that are similar in appearance to sedimentary features called “fire areas” on Santa Rosa Island and elsewhere. Massive fine-grained sediments that contain the burn evidence are interpreted as sheetwash deposits and are interbedded with coarse-grained, clast-supported alluvial sediments and matrix supported sands, pebbles, and cobbles that represent localized debris flows. These sedimentary sequences suggest that the catchment area above our study site underwent multiple cycles of relative quiescence that were interrupted by fire and followed by slope instability and mass wasting events. Our 14C-based chronology dates these cycles to well before the arrival of humans on the Channel Islands and shows that natural wildfires occurred here, at a minimum, every 300–500 years prior to human occupation.

  12. The biological soil crusts of the San Nicolas Island: Enigmatic algae from a geographically isolated ecosystem

    USGS Publications Warehouse

    Flechtner, V.R.; Johansen, J.R.; Belnap, J.

    2008-01-01

    Composite soil samples from 7 sites on San Nicolas Island were evaluated quantitatively and qualitatively for the presence of cyanobacteria and eukaryotic microalgae. Combined data demonstrated a rich algal flora with 19 cyanobacterial and 19 eukaryotic microalgal genera being identified, for a total of 56 species. Nine new species were identified and described among the cyanobacteria and the eukaryotic microalgae that were isolated: Leibleinia edaphica, Aphanothece maritima, Chroococcidiopsis edaphica, Cyanosarcina atroveneta, Hassallia californica, Hassallia pseudoramosissima, Microchaete terrestre, Palmellopsis californiens, and Pseudotetracystis compactis. Distinct distributional patterns of algal taxa existed among sites on the island and among soil algal floras of western North America. Some algal taxa appeared to be widely distributed across many desert regions, including Microcoleus vaginatus, Nostoc punctiforme, Nostoc paludosum, and Tolypothrix distorta, Chlorella vulgaris, Diplosphaera cf. chodatii, Myrmecia astigmatica, Myrmecia biatorellae, Hantzschia amphioxys, and Luticola mutica. Some taxa share a distinctly southern distribution with soil algae from southern Arizona, southern California, and Baja California (e.g., Scenedesmus deserticola and Eustigmatos magnus). The data presented herein support the view that the cyanobacterial and microalgal floras of soil crusts possess significant biodiversity, much of it previously undescribed.

  13. Plastic surgery in 17th century Europe. case study: Nicolae Milescu, the snub-nosed.

    PubMed

    Dumbravă, Daniela; Luchian, Stefan

    2013-01-01

    The rising and the existence of plastic and aesthetic surgery in early modern Europe did not have a specific pattern, but was completely different from one nation to another. Colleges of Physicians could only be found in some places in Europe; different Parliaments of Europe's nations did not always elevate being a surgeon to the dignity of a profession, and being a surgeon did not always come with corporate and municipal privileges, or with attractive stipends. Conversely, corporal punishments for treacherous surgeons were ubiquitous. Rhinoplasty falls into the category of what Ambroise Paré named "facial plastic surgery". The technique is a medical source from which many histories derive, one more fascinating than the other: the history of those whose nose was cut off (because of state betrayal, adultery, abjuration, or duelling with swords), the history of those who invented the surgery of nose reconstruction (e.g. SuSruta-samhita or Tagliacozzi?), the history of surgeries kept secret in early modern Europe (e.g. Tropea, Calabria, Leiden, Padua, Paris, Berlin), and so on. Where does the history of Nicolae Milescu the Snub-nosed fall in all of this? How much of this history do the Moldavian Chronicles record? Is there any "scholarly gossip" in the aristocratic and diplomatic environments at Constantinople? What exactly do the British ambassadors learn concerning Rhinoplasty when they meet Milescu? How do we "walk" within these histories, and why should we be interested at all? What is their stike for modernity? Such are the interrogations that this article seeks to provoke; its purpose is to question (and eventually, synchronise) histories, and not exclusively history, both in academic terms but also by reassessing the practical knowledge of the 17th century.

  14. Cloud and boundary layer structure over San Nicolas Island during FIRE

    NASA Technical Reports Server (NTRS)

    Albrecht, Bruce A.; Fairall, Christopher W.; Syrett, William J.; Schubert, Wayne H.; Snider, Jack B.

    1990-01-01

    The temporal evolution of the structure of the marine boundary layer and of the associated low-level clouds observed in the vicinity of the San Nicolas Island (SNI) is defined from data collected during the First ISCCP Regional Experiment (FIRE) Marine Stratocumulus Intense Field Observations (IFO) (July 1 to 19). Surface, radiosonde, and remote-sensing measurements are used for this analysis. Sounding from the Island and from the ship Point Sur, which was located approximately 100 km northwest of SNI, are used to define variations in the thermodynamic structure of the lower-troposphere on time scales of 12 hours and longer. Time-height sections of potential temperature and equivalent potential temperature clearly define large-scale variations in the height and the strength of the inversion and periods where the conditions for cloud-top entrainment instability (CTEI) are met. Well defined variations in the height and the strength of the inversion were associated with a Cataline Eddy that was present at various times during the experiment and with the passage of the remnants of a tropical cyclone on July 18. The large-scale variations in the mean thermodynamic structure at SNI correlate well with those observed from the Point Sur. Cloud characteristics are defined for 19 days of the experiment using data from a microwave radiometer, a cloud ceilometer, a sodar, and longwave and shortwave radiometers. The depth of the cloud layer is estimated by defining inversion heights from the sodar reflectivity and cloud-base heights from a laser ceilometer. The integrated liquid water obtained from NOAA's microwave radiometer is compared with the adiabatic liquid water content that is calculated by lifting a parcel adiabatically from cloud base. In addition, the cloud structure is characterized by the variability in cloud-base height and in the integrated liquid water.

  15. A reappraisal of Theroteinus (Haramiyida, Mammaliaformes) from the Upper Triassic of Saint-Nicolas-de-Port (France)

    PubMed Central

    2016-01-01

    The earliest mammaliaforms are difficult to assess because the fossil record is poor and because their distinctive morphologies cannot be directly compared with more recent mammaliaforms. This is especially true for the haramiyid genus Theroteinus, only known in the Saint-Nicolas-de-Port locality (Rhaetian, France). This study presents a new definition of the type-species Theroteinus nikolai. A new species Theroteinus rosieriensis, sp. nov., is named and distinguished by the lingual shift of distal cusps, a larger size, and a stockier occlusal outline. Comparisons with Eleutherodon, Megaconus and Millsodon suggest that Theroteinus has potential close relatives among the Jurassic haramiyids. PMID:27781174

  16. [The chemical entries of Charles Gerhardt in Dictionnaire universel des Sciences, des Lettres et des Arts by Marie-Nicolas Bouillet].

    PubMed

    Fournier, Josette

    2004-01-01

    Charles Gerhardt (1816-1856) is known as the founder of modern organic chemistry. He wrote the chemical entries of the dictionary managed by Marie-Nicolas Bouillet (1798-1864), who was a philosopher. This great deal of work was done between 1849 and 1853. It accounts for didactic and militant purposes of Gerhardt. The whole entries set up a true treatise of chemistry, and reflect the synthetic mind of their author.

  17. The use of microgravity technique in archaeology: A case study from the St. Nicolas Church in Pukanec, Slovakia

    NASA Astrophysics Data System (ADS)

    Pánisová, Jaroslava; Pašteka, Roman

    2009-01-01

    The detection of subsurface cavities, such as crypts, cellars and tunnels, in churches and castles belongs to successful applications of the employment of surface gravity measurement techniques in archaeo-prospecting. The old historic building exploration requires using of non-invasive methods, and hence the microgravity technique is a proper candidate for this task. On a case study from the Roman-Catholic Church of St. Nicolas in the town Pukanec the results of using microgravity for detection and delineation of local density variations caused by a near-surface void are shown. The acquired negative anomaly in the residual Bouguer anomalies field suggested the presence of a possible void feature. Euler deconvolution and 3D modelling were used to estimate the depth and shape of the anomalous source. Additionally, measurements of the vertical gravity gradient on several stations were performed. We tested how the use of a downward continuation of gravity, utilizing the real vertical gravity gradient, influences the shape and amplitude of the final Bouguer anomaly map.

  18. From the Island of the Blue Dolphins: A unique 19th century cache feature from San Nicolas Island, California

    USGS Publications Warehouse

    Erlandson, Jon M.; Thomas-Barnett, Lisa; Vellanoweth, René L.; Schwartz, Steven J.; Muhs, Daniel R.

    2013-01-01

    A cache feature salvaged from an eroding sea cliff on San Nicolas Island produced two redwood boxes containing more than 200 artifacts of Nicoleño, Native Alaskan, and Euro-American origin. Outside the boxes were four asphaltum-coated baskets, abalone shells, a sandstone dish, and a hafted stone knife. The boxes, made from split redwood planks, contained a variety of artifacts and numerous unmodified bones and teeth from marine mammals, fish, birds, and large land mammals. Nicoleño-style artifacts include 11 knives with redwood handles and stone blades, stone projectile points, steatite ornaments and effigies, a carved stone pipe, abraders and burnishing stones, bird bone whistles, bone and shell pendants, abalone shell dishes, and two unusual barbed shell fishhooks. Artifacts of Native Alaskan style include four bone toggling harpoons, two unilaterally barbed bone harpoon heads, bone harpoon fore-shafts, a ground slate blade, and an adze blade. Objects of Euro-American origin or materials include a brass button, metal harpoon blades, and ten flaked glass bifaces. The contents of the cache feature, dating to the early-to-mid nineteenth century, provide an extraordinary window on a time of European expansion and global economic development that created unique cultural interactions and social transformations.

  19. High mass and spatial resolution mass spectrometry imaging of Nicolas Poussin painting cross section by cluster TOF-SIMS.

    PubMed

    Noun, M; Van Elslande, E; Touboul, D; Glanville, H; Bucklow, S; Walter, P; Brunelle, A

    2016-12-01

    The painting Rebecca and Eliezer at the Well, which hangs in the Fitzwilliam Museum, Cambridge, UK, is possibly one of the last figure painting executed by Nicolas Poussin at the very end of his life and is usually dated to the early 1660s. In this perspective special feature, Philippe Walter, Alain Brunelle and colleagues give new insights on the artist's working methods by a careful stateof-the-art imaging ToF-SIMS study of one sample taken on the edge of the painting. This approach allowed for the identification of the pigments used in the painting, their nature and components and those of the ground and preparatory layers, with the identification of the binder(s) and possible other additions of organic materials such as glue. This study paves the way to a wider use of ToF-SIMS for the analysis of ancient cultural heritage artefacts. Dr. Walter is the Director of the Molecular and Structural Archeology Laboratory (Université Pierre et Marie Curie, Paris, France). Dr. Brunelle is Head of the Mass Spectrometry Laboratory at the Institut de Chimie des Substances Naturelles (CNRS, Gif-sur-Yvette, France). Their long standing collaboration has led to several seminal publications on the analysis of ancient artefacts by mass spectrometry.

  20. Magnetic susceptibility measurements as proxy method to monitor soil pollution: the case study of S. Nicola di Melfi.

    PubMed

    D'Emilio, Mariagrazia; Caggiano, Rosa; Coppola, Rosa; Macchiato, Maria; Ragosta, Maria

    2010-10-01

    The development of in situ, cheep, noninvasive, and fast strategies for soil monitoring is a crucial task for environmental research. In this paper, we present the results of three field surveys carried out in an industrial area of Southern Italy: S. Nicola di Melfi. The monitoring procedure is based on soil magnetic susceptibility measurements carried out by means of experimental protocols that our research group developed during the last years. This field surveys is supported by both geological characterization of the area and analytical determinations of metal concentrations in soils. Magnetic studies were carried out not only in situ but also in laboratory. Results show that, taking into account the influence due to the geomorphologic difference, soil magnetic susceptibility is an optimal indicator of the anthropogenic impact. So, our monitoring strategy discloses that the combined use of magnetic susceptibility measurements and soil geomorphology information may be used as a useful tool for the temporal monitoring of pollution evolution and for a fast screening of polluted zones.

  1. The construction of the idea of the city in Early Modern Europe: Pérez de Herrera and Nicolas Delamare.

    PubMed

    Fraile, Pedro

    2010-01-01

    With the economic and social changes in Europe at the end of the sixteenth century and the formation and consolidation of an urban network throughout the continent, questions such as poverty, sanitation, and hygiene began to pose acute problems in the cities of the age. A new school of thought, known in Spain as Ciencia de Policía and in the Mediterranean area as Policy Science, proposed solutions for these problems and tested them through practical interventions inside the urban setting. In this article the author compares the work of two thinkers: Cristóbal Pérez de Herrera, a Spaniard, and Nicolas Delamare, a Frenchman. Writing in the late sixteenth and early seventeenth centuries, Pérez de Herrera examined the organization of Madrid, the newly founded (though still not firmly established) capital of Spain. Delamare based his study on the Paris of the early eighteenth century. The author stresses the coincidences in some of the ideas of both thinkers and shows how their writings begin to embody a new idea of the city, many aspects of which have survived until the present day.

  2. [The Le Camus apothecary-grocers in Paris from the XVth to the XVIIth century. Nicolas IV Le Camus owned the Pavillon des Singes in the Rue Saint-Honoré, the residence of the Pocquelin family].

    PubMed

    Warolin, Christian

    2011-02-01

    Five members of the Le Camus family of Paris were apothecary-grocers, a situation passed down from father to son from the end of the reign of Charles VII up to the reign of Louis XIV, in other words for nearly two centuries. Four of them were called Nicolas and the fifth Jehan. Nicolas I practised his trade in the Rue Saint-Antoine; Nicolas II and Jehan lived in the district of Les Halles, on the corner of the Rue Saint-Denis and the Rue de la Chanvrerie. Nicolas IV was a tenant in a house at the crossroads of the Rue Saint-Honoré and the Rue des Poulies, later absorbed by the opening of the Rue du Louvre. In 1638, Nicolas IV bought the house known as "Le Pavillon des Singes" on the corner of the Rue Saint-Honoré and the Rue des Vieilles Etuves (now the Rue Sauval), the home of the family of Jean Pocquelin, father of Jean-Baptiste, the future Molière. When Nicolas IV died, his goods were divided between his son François, lawyer in Parliament, and his daughter Anne who inherited the "Pavillon des Singes". In 1680, she sold it to an administrator of the Hôtel-Dieu. Nicolas IV Le Camus was the last Parisian apothecary of this dynasty and no other Le Camus practised pharmacy in Paris until the Royal Declaration of 25th April 1777 which created the College of Pharmacy and the Master of Pharmacy.

  3. Sea-level history during the Last Interglacial complex on San Nicolas Island, California: implications for glacial isostatic adjustment processes, paleozoogeography and tectonics

    USGS Publications Warehouse

    Muhs, Daniel R.; Simmons, Kathleen R.; Schumann, R. Randall; Groves, Lindsey T.; Mitrovica, Jerry X.; Laurel, Deanna

    2012-01-01

    San Nicolas Island, California has one of the best records of fossiliferous Quaternary marine terraces in North America, with at least fourteen terraces rising to an elevation of ~270 m above present-day sea level. In our studies of the lowest terraces, we identified platforms at 38-36 m (terrace 2a), 33-28 m (terrace 2b), and 13-8 m (terrace 1). Uranium-series dating of solitary corals from these terraces yields three clusters of ages: ~120 ka on terrace 2a (marine isotope stage [MIS] 5.5), ~120 and ~100 ka on terrace 2b (MIS 5.5 and 5.3), and ~80 ka (MIS 5.1) on terrace 1. We conclude that corals on terrace 2b that date to ~120 ka were reworked from a formerly broader terrace 2a during the ~100 ka sea stand. Fossil faunas differ on the three terraces. Isolated fragments of terrace 2a have a fauna similar to that of modern waters surrounding San Nicolas Island. A mix of extralimital southern and extralimital northern species is found on terrace 2b, and extralimital northern species are on terrace 1. On terrace 2b, with its mixed faunas, extralimital southern species, indicating warmer than present waters, are interpreted to be from the ~120 ka high sea stand, reworked from terrace 2a. The extralimital northern species on terrace 2b, indicating cooler than present waters, are interpreted to be from the ~100 ka sea stand. The abundant extralimital northern species on terrace 1 indicate cooler than present waters at ~80 ka. Using the highest elevations of the ~120 ka platform of terrace 2a, and assuming a paleo-sea level of +6 m based on previous studies, San Nicolas Island has experienced late Quaternary uplift rates of ~0.25-0.27 m/ka. These uplift rates, along with shoreline angle elevations and ages of terrace 2b (~100 ka) and terrace 1 (~80 ka) yield relative (local) paleo-sea level elevations of +2 to +6 m for the ~100 ka sea stand and -11 to -12 m for the ~80 ka sea stand. These estimates are significantly higher than those reported for the ~100 ka and ~80 ka

  4. Sea-level history during the Last Interglacial complex on San Nicolas Island, California: implications for glacial isostatic adjustment processes, paleozoogeography and tectonics

    NASA Astrophysics Data System (ADS)

    Muhs, Daniel R.; Simmons, Kathleen R.; Schumann, R. Randall; Groves, Lindsey T.; Mitrovica, Jerry X.; Laurel, DeAnna

    2012-03-01

    San Nicolas Island, California has one of the best records of fossiliferous Quaternary marine terraces in North America, with at least fourteen terraces rising to an elevation of ˜270 m above present-day sea level. In our studies of the lowest terraces, we identified platforms at 38-36 m (terrace 2a), 33-28 m (terrace 2b), and 13-8 m (terrace 1). Uranium-series dating of solitary corals from these terraces yields three clusters of ages: ˜120 ka on terrace 2a (marine isotope stage [MIS] 5.5), ˜120 and ˜100 ka on terrace 2b (MIS 5.5 and 5.3), and ˜80 ka (MIS 5.1) on terrace 1. We conclude that corals on terrace 2b that date to ˜120 ka were reworked from a formerly broader terrace 2a during the ˜100 ka sea stand. Fossil faunas differ on the three terraces. Isolated fragments of terrace 2a have a fauna similar to that of modern waters surrounding San Nicolas Island. A mix of extralimital southern and extralimital northern species is found on terrace 2b, and extralimital northern species are on terrace 1. On terrace 2b, with its mixed faunas, extralimital southern species, indicating warmer than present waters, are interpreted to be from the ˜120 ka high sea stand, reworked from terrace 2a. The extralimital northern species on terrace 2b, indicating cooler than present waters, are interpreted to be from the ˜100 ka sea stand. The abundant extralimital northern species on terrace 1 indicate cooler than present waters at ˜80 ka. Using the highest elevations of the ˜120 ka platform of terrace 2a, and assuming a paleo-sea level of +6 m based on previous studies, San Nicolas Island has experienced late Quaternary uplift rates of ˜0.25-0.27 m/ka. These uplift rates, along with shoreline angle elevations and ages of terrace 2b (˜100 ka) and terrace 1 (˜80 ka) yield relative (local) paleo-sea level elevations of +2 to +6 m for the ˜100 ka sea stand and -11 to -12 m for the ˜80 ka sea stand. These estimates are significantly higher than those reported for the

  5. Joseph-Nicolas Delisle's relations with German astronomers and scientists when travelling to and from Russia (1725-26 and 1747)

    NASA Astrophysics Data System (ADS)

    Dumont, Simone

    Upon request by Peter-the-Great, the French astronomer Joseph-Nicolas Delisle (1688-1768) left Paris in November 1725. During his voyage, he wanted to visit German colleagues and to have the opportunity to examine their instruments. His objective since several years was to collect original data of observations. When being in Nuremberg and Berlin, he made a search concerning the observations performed by Eimmart and G. Kirch, later in Danzig, he succeeded to buy Hevelius's manuscripts. After staying in Russia for 22 years, where he was the founder of the Petersburg Observatory, Delisle came back to France in the year 1747. During his return trip (two and a half months) he visited libraries in Prussia showing interest to their manuscripts and to some curiosities. Then in the surroundings of Wittenberg, he visited count von Löser's collection of instruments. In Berlin, he met the Feldmarschall von Schmettau and Grischow; but the previously seen colleagues were dead. During all these years, Delisle had enlarged the circle of his acquaintances, which has been very useful to launch the ``avertissements'' to recommend observations of some peculiar astronomical phenomena. The expeditions in 1761 for the transit of Venus owe a lot to him.

  6. Nicolas Donitch. Solved enigmas. (Nicolae Donici. Enigme descifrate)

    NASA Astrophysics Data System (ADS)

    Stavinschi, Magda

    2015-12-01

    The book is the most complete historical -scientific biography of the astronomer N.N. Donitch (1874, Chisinau, Bessarabia- 1960, Nice, France). It include many photographs, recollections on him by astronomers from many countries, archive documents. Main scientific interests and results has been described in detail. The activity of the astronomer in Astronomical Societies and IAU over the time has been described also. A list of publications has been given with a list of references on his personalty. The book is designed for a large circle of readers - from scientific researchers to students and non-astronomers yet.

  7. A crowd of pedestrian dynamics - The perspective of physics. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Miguel, António F.

    2016-09-01

    Walking is the most basic form of transportation. A good understanding of pedestrian's dynamics is essential in meeting the mobility and accessibility needs of people by providing a safe and quick walking flow [1]. Advances in the dynamics of pedestrians in crowds are of great theoretical and practical interest, as they lead to new insights regarding the planning of pedestrian facilities, crowd management, or evacuation analysis. Nicola Bellomo's et al. article [2] is a very timely review of the related research on modelling approaches, computational simulations, decision-making and crisis response. It also includes an attempt to accurately define commonly used terms, as well as a critical analysis of crowd dynamics and safety problems. As noted by the authors, ;models and simulations offer a virtual representation of real dynamics; that are essential to understand and predict the ;behavioural dynamics of crowds; [2]. As a physicist, I would like to put forward some additional theoretical and practical contributions that could be interesting to explore, regarding the perspective of physics on about human crowd dynamics (panic as a specific form of behaviour excluded).

  8. [Nicolas Lémery, salvation of bibliophiles].

    PubMed

    Lafont, Olivier

    2009-10-01

    Very few science books circulated amongst the European scientists, with so efficiency as Lemery's. His Course of Chemistry has been published 18 times in French and has been translated in Latin, English, German, Spanish, Italian and Deutch. His Treaty or Dictionnary of Drugs has been published 14 times in French and translated in foreign languages. His Universal Pharmacopeia has not been published less than 17 times in French and has also been translated in foreign languages. The longevity of these books was quite unusual, because, for exemple, his Dictionnary, first published in 1698, was published again in 1807!

  9. The mathematical biophysics of Nicolas Rashevsky.

    PubMed

    Cull, Paul

    2007-04-01

    N. Rashevsky (1899-1972) was one of the pioneers in the application of mathematics to biology. With the slogan: mathematical biophysics : biology :: mathematical physics ; physics, he proposed the creation of a quantitative theoretical biology. Here, we will give a brief biography, and consider Rashevsky's contributions to mathematical biology including neural nets and relational biology. We conclude that Rashevsky was an important figure in the introduction of quantitative models and methods into biology.

  10. San Nicolas Island Barge Landing Site Survey.

    DTIC Science & Technology

    1978-11-01

    Marine Terraces. Pleistocene Erosion o’ Arroyos (Glacial) 500,000 to 2.000,000 Pliocene Cenozoic 13.000,000 Miocene - Island Uplift 25,000,000...The diver route was from a point 100 yards offshore in towards the beach. "The divers swam into and over a reef about 50 yards off the beach with a...2-ft cover of water; it would be uncovered at LLW. Shoaling effect of waves make it evident. Bearing of the reef was on course 2100 to the shack on

  11. The treatises of Jean Nicolas Louis Durand

    NASA Astrophysics Data System (ADS)

    Vanzeijl, Gerard A. C.

    The treatises of Durand on architecture were studied in order to set them in a wider context. An attempt was made to demystify the negative image of Durand by presenting an honest judgement and a new interpretation. Many paradoxical statements were discovered, and discussed in the light of modern architecture. Seen from the topical architecture debate, a new image appeared, making Durand's theory transparent by the confrontation with those of some philosophers and architects today.

  12. Delisle, Joseph-Nicolas (fl. eighteenth century)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    French astronomer, member of the Académie, hired CHARLES MESSIER as a draftsman, and as a recorder of astronomical observations. Visited ISAAC NEWTON in London in 1724. Calculated the return path for HALLEY's Comet in 1758-9 and published a map which guided the recovery search, showing the predicted path of return calculated at 10 day intervals. Messier, as his observing assistant, was set to obs...

  13. Conversations with American Composers: Ev Grimes Interviews Nicolas Slonimsky.

    ERIC Educational Resources Information Center

    Grimes, Ev

    1986-01-01

    Born in Russia in 1894, Nicholas Slonimsky founded the Chamber Orchestra of Boston and was the editor of the latest three editions of Baker's "Biographical Dictionary of Music." In this interview he talks about his life in music and his love of teaching music. (RM)

  14. Status of translocated sea otters at San Nicolas Island, California

    USGS Publications Warehouse

    Rathbun, Galen B.; Hatfield, Brian B.; Murphey, Thomas G.

    2000-01-01

    In the 1970s about 1,650 southern sea otters (Enhydra lutris nereis) were restricted to the central California coast (Riedman and Estes, 1990), and a high volume of oil was being shipped through the region. Because of the vulnerability of sea otters to contamination from oil (Costa and Kooyman, 1982; Williams and Davis, 1995) that would likely spread wide- ly along the shore after a large spill (Van- Blaricom and Jameson, 1982), the subspecies was listed as threatened in 1977 under the United States Endangered Species Act.

  15. Nicolas-Louis de La Caille: Astronomer and Geodesist

    NASA Astrophysics Data System (ADS)

    Glass, I. S.

    La Caille was one of the observational astronomers and geodesists who followed Newton in developing ideas about celestial mechanics and the shape of the earth. He provided data to the great 18th-century mathematicians involved in understanding the complex gravitational effects that the heavenly bodies have on one another. Observing from the Cape of Good Hope, he made the first ever telescopic sky survey and gave many of the southern constellations their present-day names. He measured the paths of the planets and determined their distances by trigonometry. In addition, he made a controversial measurement of the radius of the earth that seemed to prove it was pear-shaped. On a practical level, La Caille developed the method of `Lunars' for determining longitudes at sea. He mapped the Cape. As an influential teacher he propagated Newton's theory of universal gravitation at a time when it was only beginning to be accepted on the European continent. This book gives the most comprehensive overview so far available of La Caille's life and work, showing how he interacted with his often difficult colleagues. It places special emphasis on his life at, and his observations and comments on, the Cape of Good Hope, where he spent the years 1751-53.

  16. Cosmic Rays in the "Urusvati" Institute from Archives of Nicolas Roerich Centre-Museum (Moscow)

    NASA Astrophysics Data System (ADS)

    Miroshnichenko, L. I.; Sidorov, V. I.

    2013-02-01

    The history of cosmic ray study by means of ground-based methods in the 1930s contains some gaps. The press barely covered the study of cosmic rays at the "Urusvati» Himalayan Research Institute that functioned in the Indian Himalayas in 1928-1939. Archival materials of the "Urusvati" Institute now stored at the International Centre-Museum named after N.K. Roerich (Moscow), give evidence to the active participation of the Institute staff in the study of cosmic rays. By the initiative of A.H. Compton, in 1932 several expeditions on the studies of cosmic rays were organized in different parts of the world. One of these expeditions passed through the Himalayas in the region of the South-Eastern Ladakh. The report on this highland expedition which took place at the altitude of 19,500 feet above the sea level was published by J.M. Benade in the "Urusvati Journal" (was issued during 1931-1933). Cooperation between George Roerich, the Institute Director, and Prof. J.M. Benade in expedition to Ladakh has been documented.

  17. 78 FR 67300 - Anchorage Regulations: Pacific Ocean at San Nicolas Island, Calif.; Restricted Anchorage Areas

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-12

    ..., go to http://www.regulations.gov , type the docket number USCG-2012-0967 in the ``SEARCH'' box and...'' box and click ``SEARCH.'' Click on Open Docket Folder on the line associated with this rulemaking. You... Beach and the explosives safety arc around the Barge Pier at Daytona Beach (see figure 2 located in...

  18. Tethered Balloon Measurements at San Nicolas Island (October 1984): Instrumentation, Data Summary, Preliminary Data Interpretation.

    DTIC Science & Technology

    1986-07-16

    FUNDING /SPONSORING 8b. OFFICE SYMBOL 9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER . Sc. ADDRESS (Ciy. Stae and ZIP Co*) 10 , SOURCE OF FUNDING...H-ermann 13a. TYPE OF REPORT 13b. TIME COVERED 14. DATE OF REPORT (Year, Mtonth Day) S.PAGE COUNT Intcrim FROM 84/ 10 /18 To 84/ 10 /29 1986 July 16 F 8 1...9 3.2 Tables and Plots................................................................................ 10 3.3

  19. Chemical characterisation, plant remain analysis and radiocarbon dating of the Venetian "Manna di San Nicola".

    PubMed

    Tapparo, Andrea; Di Marco, Valerio B; Bombi, G Giorgio; Paganelli, Arturo

    2002-03-01

    A sample of oil coming from the case containing the relics of St. Nicholas the Great, preserved in the church of "San Nicolò al Lido" (Venice, Italy), has been characterised by the determination of its chemical composition, its age (radiocarbon dating) and the presence of particles of biological origin. Experimental results show that the sample is a vegetal oil, with a fatty acids composition modified by natural oxidation processes, containing pollen grains of plants from Northern Italy, and dating around 1300 A.D. These results together with an historical and artistic evaluation of the ceramic jar containing the oil, allow us to hypothesise that the jar was introduced into the case after the arrival of the relics in Venice (1100 A.D.) during one of the official inquisitions prior to that documented in 1399 A.D.

  20. 78 FR 70005 - Naval Base Ventura County, San Nicolas Island, California; Restricted Area

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-22

    ... Web site is an anonymous access system, which means we will not know your identity or contact... regulations restrict commercial trawl fishing and other ``fishing operations.'' Commercial fishing is now... references to range marker poles, given that the majority of boaters use Global Positioning Systems...

  1. Report and Analysis of the May 1979 Marine Surface Layer Micrometeorological Experiment at San Nicolas Island, California.

    DTIC Science & Technology

    1981-12-31

    and above the internal boundary layer formed by the island. Additionally, a generalized technique was developed for correcting the wind-profile...and stability. The su tantial size of the average bulk stability error (-300%) suggested that, unless an independent easurement technique to...atmospheric conditions. It was demonstrated that the inherent difficulty with the bulk method is lack of an accurate technique for measuring the water surface

  2. The Data Base for the May 1979 Marine Surface Layer Micrometeorological Experiment at San Nicolas Island, California.

    DTIC Science & Technology

    1982-05-07

    34/"" lOT . 102 .507 13752 13.USD0 9.SASDE- C3 97.12 7.737E)-03 1 2.59 9 1.462 N0 DATA bLLIR AERODYNAM IC CALCUl AT IONS BEASED ON ABOVE ESTIMATED VALUES...ADiS. HUMIDIIY AIR SPECIFIC HEAT iMeter) GMH’(ZInZ2f)/2 (Kg/sc .2) (Kg/Kg) (Mete Kg/sec c3 ) (ITcal./Kq Kel.) 12.99 3.13E-05 -1.033E-04 3.131 -I5...BULKCONSTANT ACCELERATION TOR.PRANDTL T UR.SCHMIDT SFN HEAT MOISTURE AIR DENSITY (Noa otts (N/N* 2) NUMBER NUNBE R TRANSECOEF. IRANSECOEP. )K g/ c3 1

  3. Tidal and Lunar Data for Point Mugu, San Nicolas Island, and the Barking Sands Area during 1984.

    DTIC Science & Technology

    1983-12-30

    1606 0456 1719 0435 1748 0531 1933 28 291 0456 1551 Ot,03 i1719 0518 1656 0527 1810 0514 1845 0630 2032 29 301 0549 1 644 --- I.... 0551 1746 0601 1902...1.4 1429 .2 2007 .7 9 0035 .4 0718 1.3 1501 1 2123 .8 10 0201 .6 0800 111 1536 .1 2234 1.0 11 0406 .7 0848 .9 1610 .1 12 2330 1,2* 0614 .6 0947 .8 1649...0850 1251 .4 2001 .4 20 0357 1 1009 1417 .6 2043 1,3 21 0429 1 1111 1605 .6 2135 1.1 22 0459 0, 0 115?! 1749 .6 2224 .9 23 0527 0.0 1239 1 1915 .5 2316

  4. Tidal and Lunar Data for Point Mugu, San Nicolas Island, and the Barking Sands Area During 1988.

    DTIC Science & Technology

    1987-12-31

    13 0703 1708 0644 1738 0610 1802 0528 1826 0456 1849 0444 1909 13 14 0702 1709 0643 1739 0609 1803 0527 1827 0456 185 0444 1909 14 IS 0702 1710 0642...0548 1747 0611 1709 0640 1848 0701 1654 7’ 28 0500 1901 0527 1828 05.49 1745 0612 1708 0641 1647 0701 1655 29 29 0505 1900 0528 1827 0549 1744 0613...Sunset Sunrise Sunset I 0718 1807 0718 1821 0700 1843 0632 1854 0607 1905 0555 1919 1 2 0719 1 we 0717 I7"i 0659 1843 0631 1855 0607 190 0555 1919 2

  5. Tidal and Lunar Data for Point Mugu, San Nicolas Island, and the Barking Sands Area During 1990

    DTIC Science & Technology

    1989-12-31

    12 00 1707 0645 1737 0811 13 0lo0 15 0457 149 0444 1906 12 13 07 1703 04 1736 0610 i13m 0528 1826 045 1849 04" 1909 13 14 m 1� 0607 739 09 180 0527 ...06462 Ism0 0718 M87 31 A4mrug tvflght Avrage "W69 84or-g twiligt Amoe"g twFiligh -4 g twilsgt Anmge twillght Cloth 25 smin. 0,11 22 min. CUM1 22 ml.m

  6. Tidal and Linar Data for Point Mugu, San Nicolas Island, and the Barking Sands Area During 1994

    DTIC Science & Technology

    1993-12-01

    184910444 1908i 12, 1310703 170810644 173810610 18021 0528 182610456 184910444 19091 13: 1410702 170910643 173910609 1803 0527 1827 0456 185010444...sun-:sun- Sun-,Sun- Sun- Sun- Sun-i Sun- Sun-iSun- Sun- Date ~rise set ýrise set irise set irise set irise set rise set 110718 :807 0718 1828j0700...1755 0717 1805 28 29 0610 1921 0621 1859 0630 1829 0641 1804 0700 1755 0717 1805 29 30 0610 1920 0621 1858 0630 1828 0642 1803 0701 1755 0718 1806 30

  7. Tidal and Lunar Data for Point Mugu, San Nicolas Island, and the Barking Sands Area during 1981.

    DTIC Science & Technology

    1980-11-15

    1436 0352 1619 0420 1657 0354 1829 0412 16 17 1501 0426 1644 0554 1535 0434 1714 0451 1751 0425 1922 0455 17 18 1557 0527 1743 0635 1633 0511 1808 0521...0500 1621 0621 1741 0459 1623 0555 1809 0600 1901 0718 2101 3 4 0554 1709 0711 1840 0548 1723 0640 0913 0649 2007 0818 2200 4 5 0647 1801 0800 1941 0636...0.1 ?9 0527 1.9 1310 0.2 1746 0.6 7249 0.2 30 0603 1.8 1347 0.1 IR49 0.6 ----.... 31 2336 0.3* 0642 1.7 1426 0.1 7003 0.7 -- 1IU. OCCURS ON PREVIOUS

  8. Tidal and Lunar Data for Point Mugu, San Nicolas Island, and the Barking Sands Area during 1983.

    DTIC Science & Technology

    1982-12-30

    1027 2038 1152 2153 1140 2232 10 11 0004 2043 0630 2113 1036 2124 1127 2124 1233 2250 1210 2327 11 12 0718 2129 006 2145 1138 223 1223 2215 1306 2346...1813 9 10 0432 1543 050 163 0432 1539 0506 1659 0449 1729 0532 1918 10 11 0525 1628 0635 1745 0514 1631 0641 1752 0527 1827 028 2024 11 12 0616 1716...0612 1827 0646 1711 0625 1856 0602 1934 069 2067 0705 26 27 1728 0617 1931 0734 1613 0606 1962 0641 2030 0643 2141 0756 27 28 1637 0718 2032 08171

  9. Tidal and Lunar Data for Point Mugu, San Nicolas Island, and the Barking Sands Area during 1980.

    DTIC Science & Technology

    1979-12-19

    0654 1911 0751 2104 0812 2147 0939 2254 16 17 0708 1833 0820 2029 0741 2015 0841 2206 0907 2241 1032 2334 17 18 0803 1937 0907 2132 0828 2119 0933...0552 2000 0747 2015 0840 2144 1024 2217 1037 25 26 1844 0507 1952 0656 2048 0852 2110 0944 2241 1115 2310 1118 26 27 1937 0606 2038 0800 2137 0956 2205...1.7 $ 0753 0.7 0115 0.5 1?15 0.2 1950 1.1 6 035? 0.1 082? 0.5 13?s n.3 Po5)5 1.6 7 0450 0.1 10? 0.6 1504 0.4 PISA I.b P 053r, 0.0 1131 0.8 1640 0.4

  10. McStas 1.1: a tool for building neutron Monte Carlo simulations

    NASA Astrophysics Data System (ADS)

    Lefmann, K.; Nielsen, K.; Tennant, A.; Lake, B.

    2000-03-01

    McStas is a project to develop general tools for the creation of simulations of neutron scattering experiments. In this paper, we briefly introduce McStas and describe a particular application of the program: the Monte Carlo calculation of the resolution function of a standard triple-axis neutron scattering instrument. The method compares well with the analytical calculations of Popovici.

  11. Hyperbolic scaling and computing in social crowds: Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Outada, Nisrine

    2016-09-01

    I have read with great interest the paper [5] where the authors present an overview and critical analysis of the literature on the modeling of the crowd dynamics with special attention to evacuation dynamics. The approach developed is based on suitable development of methods of the kinetic theory. Interactions, which lead to the decision choice, are modeled by theoretical tools of stochastic evolutionary game theory [11,12]. However, the paper [5] provides not only a survey focused on topics of great interest for our society, but also it looks ahead to a variety of interesting and challenging mathematical problems. Specifically, I am interested in the derivation of macroscopic (hydrodynamic) models from the underlying description given from the kinetic theory approach, more specifically by the kinetic theory for active particles [8]. A general reference on crowd modeling is the recently published book [10].

  12. Modeling social crowds. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Poyato, David; Soler, Juan

    2016-09-01

    The study of human behavior is a complex task, but modeling some aspects of this behavior is an even more complicated and exciting idea. From crisis management to decision making in evacuation protocols, understanding the complexity of humans in stress situations is more and more demanded in our society by obvious reasons [5,6,8,12]. In this context, [4] deals with crowd dynamics with special attention to evacuation.

  13. From crowd modeling to safety problems. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Elaiw, Ahmed

    2016-09-01

    Paper [3] presents a survey and a critical analysis on models of crowd dynamics derived to support crisis management related to safety problems. This is an important topic which can have an important impact on the wellbeing of our society. We are very interested in this topic as we operate in a country, Saudi Arabia, where huge crowds can be present and that stress conditions can be occasionally induced by non predictable events. In these situations the problem of crisis management is of fundamental importance.

  14. 2D and 3D documentation of St. Nicolas baroque church for the general reconstruction using laser scanning and photogrammetry technologies combination

    NASA Astrophysics Data System (ADS)

    Křemen, Tomáš; Koska, Bronislav

    2013-04-01

    Total reconstruction of a historical object is a complicated process consisting of several partial steps. One of these steps is acquiring high-quality data for preparation of the project documentation. If these data are not available from the previous periods, it is necessary to proceed to a detailed measurement of the object and to create a required drawing documentation. New measurement of the object brings besides its costs also several advantages as complex content and form of drawings exactly according to the requirements together with their high accuracy. The paper describes measurement of the Baroque church by the laser scanning method extended by the terrestrial and air photogrammetry. It deals with processing the measured data and creating the final outputs, which is a 2D drawing documentation, orthophotos and a 3D model. Attention is focused on their problematic parts like interconnection of the measurement data acquired by various technologies, creation of orthophotos and creation of the detailed combined 3D model of the church exterior. Results of this work were used for preparation of the planned reconstruction of the object.

  15. Collective learning dynamics in behavioral crowds. Comment on "Human behaviours in evacuation crowd dynamics: From modeling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Burini, D.

    2016-09-01

    A recent literature on crowd dynamics [9,10] has enlightened that the management of crisis situations needs models able to depict social behaviors and, in particular, the spread of emotional feelings such as stress by panic situation.

  16. Environmental Impact Analysis Process. Environmental Assessment Air Force Small Launch Vehicle, Vandenberg Air Force Base, Edwards Air Force Base, and San Nicolas Island, CA

    DTIC Science & Technology

    1991-05-01

    the SLC-4 area is relatively undisturbed. Flora common to this area include: chamise, black-flowered figwort , Santa Barbara ceanothus, black sage...monardella Northern harrier Blockman’s leafy daisy Burrowing owl Large-leaved wallflower Black-flowered figwort Central Coastal Scrub...1B p n n Black-flowered figwort C2 3 n Shagbark manzanita C2 1B n LaGraciosa thistle C2 1B Surf thistle C1 T 1B p

  17. A control theoretical approach to crowd management. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Borzí, Alfio; Caponigro, Marco

    2016-09-01

    The formulation of mathematical models for crowd dynamics is one current challenge in many fields of applied sciences. It involves the modelization of the complex behavior of a large number of individuals. In particular, the difficulty lays in describing emerging collective behaviors by means of a relatively small number of local interaction rules between individuals in a crowd. Clearly, the individual's free will involved in decision making processes and in the management of the social interactions cannot be described by a finite number of deterministic rules. On the other hand, in large crowds, this individual indeterminacy can be considered as a local fluctuation averaged to zero by the size of the crowd. While at the microscopic scale, using a system of coupled ODEs, the free will should be included in the mathematical description (e.g. with a stochastic term), the mesoscopic and macroscopic scales, modeled by PDEs, represent a powerful modelling tool that allows to neglect this feature and provide a reliable description. In this sense, the work by Bellomo, Clarke, Gibelli, Townsend, and Vreugdenhil [2] represents a mathematical-epistemological contribution towards the design of a reliable model of human behavior.

  18. Expedition 30 Departs for Launch Site

    NASA Video Gallery

    Three Expedition 30 flight engineers -- NASA astronaut Don Pettit, Russian cosmonaut Oleg Kononenko and European Space Agency astronaut Andre Kuipers -- departed Star City, Russia on Thursday for t...

  19. Station Crew Celebrates Christmas

    NASA Video Gallery

    Aboard the orbiting International Space Station, Expedition 34 Commander Kevin Ford, Russian Flight Engineers Oleg Novitskiy, Evgeny Tarelkin and Roman Romanenko, NASA Flight Engineer Tom Marshburn...

  20. Expedition 31 Qualification Training Simulation Runs

    NASA Video Gallery

    Expedition 31 Flight Engineers Gennady Padalka, Sergei Revin and Joe Acaba, along with backup crew members Kevin Ford, Oleg Novitskiy and Evgeny Tarelkin, complete qualification training simulation...

  1. Expedition 33/34 Crew Departs for Kazakh Launch Site

    NASA Video Gallery

    Expedition 33/34 Soyuz Commander Oleg Novitskiy, NASA Flight Engineer Kevin Ford and Russian Flight Engineer Evgeny Tarelkin participated in traditional ceremonies at the Gagarin Cosmonaut Training...

  2. Multiscale approaches to crowd dynamics and the reliability of data from experiments. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Piccoli, Benedetto

    2016-09-01

    In this interesting essay, focused on mathematical models for crowd dynamics specifically for the purpose of management of extreme events such as evacuation from complex environment, Bellomo et al. [2] provide a critical analysis and argue that kinetic models may provide well-suited tools to support decision making.

  3. Multiple scales modelling approaches to social interaction in crowd dynamics and crisis management. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Trucu, Dumitru

    2016-09-01

    In this comprehensive review concerning the modelling of human behaviours in crowd dynamics [3], the authors explore a wide range of mathematical approaches spanning over multiple scales that are suitable to describe emerging crowd behaviours in extreme situations. Focused on deciphering the key aspects leading to emerging crowd patterns evolutions in challenging times such as those requiring an evacuation on a complex venue, the authors address this complex dynamics at both microscale (individual level), mesoscale (probability distributions of interacting individuals), and macroscale (population level), ultimately aiming to gain valuable understanding and knowledge that would inform decision making in managing crisis situations.

  4. On the scaling problem and micro-macro derivation of crowd models. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Chouhad, Nadia

    2016-09-01

    A personal comment on a scientific paper is unavoidably related to the personal education and bias. This statement allows me to apologize about the fact that my comment mainly focuses on a somewhat narrow field, namely to analytic topics related to modeling behavioral crowds. The remarks in the following aim also to induce further research suggestions from the authors of paper [3]. In more detail I bring to the attention of the authors of [3] and I look forward to their reply in view of future activity in this field: The micro-macro derivation of hydrodynamic type models should lead to hyperbolic type models, where the propagation speed of perturbation is finite, see [4]. However, it would be interesting understanding how far parabolic type models [6], and their possible modifications, can be accepted as an approximation of physical reality [8].

  5. A fire safety engineering perspective on crowd evacuation dynamics. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Ronchi, Enrico

    2016-09-01

    The review presented by Bellomo et al. [1] addresses the modelling approaches employed to represent human behaviour in evacuation in a comprehensive manner. The authors discuss crowd evacuation modelling in light of crisis management, a relevant and current topic given the recent escalation of terrorist threats all over the world. The need for designing buildings for rapid evacuation using crowd evacuation models has been recently raised in important forums [2]. This research area is strictly linked to the field of Fire Safety Engineering.

  6. Crowd dynamics evacuations: The roles of shape optimization and real-time computational models. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Delle Monache, Maria Laura

    2016-09-01

    This paper focuses on mathematical models for crowd dynamics in real life situations for support to decision making in critical situations. It deals with the modeling and the computations in the light of improving safety and pedestrians behavior.

  7. Some aspects on kinetic modeling of evacuation dynamics. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Calvo, Juan; Nieto, Juanjo

    2016-09-01

    The management of human crowds in extreme situations is a complex subject which requires to take into account a variety of factors. To name a few, the understanding of human behaviour, the psychological and behavioural features of individuals, the quality of the venue and the stress level of the pedestrian need to be addressed in order to select the most appropriate action during an evacuation process on a complex venue. In this sense, the mathematical modeling of such complex phenomena can be regarded as a very useful tool to understand and predict these situations. As presented in [4], mathematical models can provide guidance to the personnel in charge of managing evacuation processes, by means of helping to design a set of protocols, among which the most appropriate during a given critical situation is then chosen.

  8. Further steps in the modeling of behavioural crowd dynamics, good news for safe handling. Comment on "Human behaviours in evacuation crowd dynamics: From modelling to "big data" toward crisis management" by Nicola Bellomo et al.

    NASA Astrophysics Data System (ADS)

    Knopoff, Damián A.

    2016-09-01

    The recent review paper [4] constitutes a valuable contribution on the understanding, modeling and simulation of crowd dynamics in extreme situations. It provides a very comprehensive revision about the complexity features of the system under consideration, scaling and the consequent justification of the used methods. In particular, macro and microscopic models have so far been used to model crowd dynamics [9] and authors appropriately explain that working at the mesoscale is a good choice to deal with the heterogeneous behaviour of walkers as well as with the difficulty of their deterministic identification. In this way, methods based on the kinetic theory and statistical dynamics are employed, more precisely the so-called kinetic theory for active particles [7]. This approach has successfully been applied in the modeling of several complex dynamics, with recent applications to learning [2,8] that constitutes the key to understand communication and is of great importance in social dynamics and behavioral sciences.

  9. Back at the ISS

    NASA Video Gallery

    Back at the ISS is a rocking musical greeting to ESA Astronaut André Kuipers, Russian cosmonaut Oleg Kononenko and the entire crew of the International Space Station on the occasion of the docking...

  10. Expedition 34/35 Mission Overview

    NASA Video Gallery

    Commander Kevin Ford leads Expedition 34 as the six-member crew conducts science and research that cannot be performed on Earth. Ford and the other five crew members Flight Engineers Oleg Novitskiy...

  11. Expedition 33/34 Crew Conducts Final Qualification Training

    NASA Video Gallery

    Expedition 33/34 Soyuz Commander Oleg Novitskiy and Flight Engineer Evgeny Tarelkin of the Russian Federal Space Agency and NASA Flight Engineer Kevin Ford conducted qualification training at the G...

  12. Before the long journey. [the development of space biology and medicine

    NASA Technical Reports Server (NTRS)

    Gazenko, O. G.

    1978-01-01

    One of the leading specialists in space biology and medicine Oleg Geogiyevich Gazenko discusses the development of space biology and medicine and the problems which its specialists solve. The application of space medicine discoveries to terrestrial medicine is also discussed.

  13. Soft and Bio Nanomaterials Group at Brookhaven’s Center for Functional Nanomaterials

    SciTech Connect

    Gang, Oleg

    2016-12-07

    Group leader Oleg Gang talks about the methods his group develops to direct the self-assembly of nanoscale systems from organic and inorganic components into functional materials with desired properties.

  14. Expedition 30 Prepares for Dec. 21 Launch

    NASA Video Gallery

    NASA astronaut Don Pettit, Russian cosmonaut Oleg Kononenko and European Space Agency astronaut Andre Kuipers arrive at the Baikonur Cosmodrome in Kazakhstan to begin the final phase of preparation...

  15. New Expedition 30 Crew Members Launch to Station

    NASA Video Gallery

    Expedition 30 Flight Engineers Don Pettit, Oleg Kononenko and Andre Kuipers launched at 8:16 a.m. EST on Wednesday (7:16 p.m. local time) from the Baikonur Cosmodrome in Kazakhstan. The three new I...

  16. Expedition 34 Says Goodbye and Undocks

    NASA Video Gallery

    Three Expedition 34 crew members said goodbye to three of their International Space Station crewmates Friday afternoon March 15, 2013. Commander Kevin Ford and Flight Engineers Oleg Novitskiy and E...

  17. Expedition 33/34 Crew Prelaunch Activities

    NASA Video Gallery

    Expedition 33/34 crew members Kevin Ford, Oleg Novitskiy and Evgeny Tarelkin participate in a variety of prelaunch activities at the Baikonur Cosmodrome in Kazakhstan. They are set to launch aboard...

  18. The Expedition 34 Crew Lands in Kazakhstan

    NASA Video Gallery

    Expedition 34 Commander Kevin Ford and Flight Engineers Evgeny Tarelkin and Oleg Novitskiy landed their Soyuz TMA-06M spacecraft in the steppe of Kazakhstan, northeast of the remote town of Arkalyk...

  19. Soft and Bio Nanomaterials Group at Brookhaven’s Center for Functional Nanomaterials

    ScienceCinema

    Gang, Oleg

    2016-12-14

    Group leader Oleg Gang talks about the methods his group develops to direct the self-assembly of nanoscale systems from organic and inorganic components into functional materials with desired properties.

  20. New Crewmates Welcomed Aboard Station

    NASA Video Gallery

    Flight Engineers Kevin Ford, Oleg Novitskiy and Evgeny Tarelkin join their Expedition 33 crewmates after the hatches between the International Space Station and the Soyuz TMA-06M spacecraft opened ...

  1. Expedition 33/34 Crew Ceremonies in Moscow

    NASA Video Gallery

    Expedition 33/34 Soyuz Commander Oleg Novitskiy and Flight Engineer Evgeny Tarelkin of the Russian Federal Space Agency and NASA Flight Engineer Kevin Ford participate in a variety of crew ceremoni...

  2. Science hub spore data

    EPA Pesticide Factsheets

    Data set includes UV dose, and Bacillus pumilus spore plate counts in colony forming unitsThis dataset is associated with the following publication:Boczek , L., E. Rhodes , J. Cashdollar, J. Ryu, J. Popovici , J. Hoelle , M. Sivaganesan , S. Hayes , M. Rodgers , and H. Ryu. Applicability of UV resistant Bacillus pumilus endospores as a human adenovirus surrogate for evaluating the effectiveness of virus inactivation in low-pressure UV treatment systems. JOURNAL OF MICROBIOLOGICAL METHODS. Elsevier Science Ltd, New York, NY, USA, 122: 43-49, (2016).

  3. Actual Romanian research in post-newtonian dynamics

    NASA Astrophysics Data System (ADS)

    Mioc, V.; Stavinschi, M.

    2007-05-01

    We survey the recent Romanian results in the study of the two-body problem in post-Newtonian fields. Such a field is characterized, in general, by a potential of the form U(q)=|q|^{-1}+ something (small, but not compulsorily). We distinguish some classes of post-Newtonian models: relativistic (Schwarzschild, Fock, Einstein PN, Reissner-Nordström, Schwarzschild - de Sitter, etc.) and nonrelativistic (Manev, Mücket-Treder, Seeliger, gravito-elastic, etc.). Generalized models (the zonal-satellite problem, quasihomogeneous fields), as well as special cases (anisotropic Manev-type and Schwarzschild-type models, Popovici or Popovici-Manev photogravitational problem), were also tackled. The methods used in such studies are various: analytical (using mainly the theory of perturbations, but also other theories: functions of complex variable, variational calculus, etc.), geometric (qualitative approach of the theory of dynamical systems), and numerical (especially using the Poincaré-section technique). The areas of interest and the general results obtained focus on: exact or approximate analytical solutions; characteristics of local flows (especially at limit situations: collision and escape); quasiperiodic and periodic orbits; equilibria; symmetries; chaoticity; geometric description of the global flow (and physical interpretation of the phase-space structure). We emphasize some special features, which cannot be met within the Newtonian framework: black-hole effect, oscillatory collisions, radial librations, bounded orbits for nonnegative energy, existence of unstable circular motion (or unstable rest), symmetric periodic orbits within anisotropic models, etc.

  4. [The academician O. G. Gazenko contribution to development of the basic problems in space biology and medicine].

    PubMed

    Grigor'ev, A I

    2008-12-01

    This December we will comme the 90th birthday of Oleg G. Gazenko, the founder of space biology and medicine, who belongs to the famous pleiad of scientists from the school of outstanding physiologist L. A. Orbeli. Talented experimenter and theorist, he was generally recognized for his investigations into the spaceflight impacts on living systems, development of the basics of medical care for crews in extended space missions, and implementation of biological experiments that served to furtherance of space and gravitation biology. The academic heritage of Oleg G. Gazenko has an imperishable significance for the progression of biomedical space researches.

  5. Role of O.G. Gazenko in formation and advancement of space biology and medicine

    NASA Astrophysics Data System (ADS)

    Grigoriev, Anatoly I.

    2011-05-01

    Oleg G. Gazenko belongs to the noble cohort of pupils of well-known Russian physiologist L.A. Orbeli. He was one of the fathers of space biology and medicine, discipline in which he displayed his brilliant talents of experimenter and thinker. He was acknowledged for the investigations of spaceflight effects on living systems, the concept of medical operations system to support long-term piloted missions and implementation of biological researches that fostered the advance of space and gravitational biology. The analytical works of Oleg G. Gazenko are of imperishable significance for future researches to the benefit of space biomedicine.

  6. Soviet Cineclubs: Baranov's Film/Media Education Model

    ERIC Educational Resources Information Center

    Fedorov, Alexander

    2015-01-01

    In this paper we analyze a historical form of media literacy education that is still insufficiently discussed in English language literature: Russian cineclubs. We focus on one particular cineclub that was created by a Soviet educator Oleg Baranov in the 1950s. We describe this cineclub's context and structure, and discuss its popularity among…

  7. Platinum Highlight Abstract - November 2013 | Poster

    Cancer.gov

    Characterization and Favorable In Vivo Properties of Heterodimeric Soluble IL-15?IL-15R? Cytokine Compared to IL-15 Monomer Elena Chertova, Cristina Bergamaschi, Oleg Chertov, Raymond Sowder, Jenifer Bear, James D. Roser, Rachel K. Beach, Jeffrey D. Lifson, Barbara K. Felber, and George N. PavlakisJ Biol Chem 288(25):18093-18103, 2013

  8. Quantified Differential Dynamic Logic for Distributed Hybrid Systems

    DTIC Science & Technology

    2010-05-01

    in modeling languages SHIFT [6] and R- Charon [15]. They focused on simulation / compilation [6] or the development of a semantics [15], so that no...Kratz, Oleg Sokolsky, George J. Pappas, and Insup Lee. R- Charon , a modeling lan- guage for reconfigurable hybrid systems. In Hespanha and Tiwari [12

  9. Enhancing the Teaching and Learning Environment in the USSR. Annual Soviet-American Symposium on Teaching and Learning (2nd, Jacksonville, Florida, October 3-4, 1991). Special Publication Number 65.

    ERIC Educational Resources Information Center

    Community Colleges for International Development, Inc.

    This publication contains papers contributed by Russian educators at a symposium on preparing Soviet youth and adults for the challenges and opportunities of an emerging market economy. The following presentations are included: "Conception of Kazan Community College" (Mirza I. Makhmoutov, Oleg E. Liseitchikov, and Viktor I. Lebedev);…

  10. Swedish University, Alleging Culture Clash, Forces out 2 Tenured Foreign Professors

    ERIC Educational Resources Information Center

    Labi, Aisha

    2007-01-01

    When Oleg Viro and Burglind Joricke resigned in February from their tenured positions at Sweden's Uppsala University, administrators hoped that their departure would restore tranquility to the strife-riven mathematics department. Instead the manner in which the highly regarded university brought about the professors' departure, for reasons that…

  11. Parallel pathways for oxidation of 14-membered polyketide macrolactones in Saccharopolyspora erythraea.

    PubMed

    Gaisser, Sabine; Lill, Rachel; Staunton, James; Méndez, Carmen; Salas, José; Leadlay, Peter F

    2002-05-01

    The glycosyltransferases OleG1 and OleG2 and the cytochrome P450 oxidase OleP from the oleandomycin biosynthetic gene cluster of Streptomyces antibioticus have been expressed, either separately or from artificial gene cassettes, in strains of Saccharopolyspora erythraea blocked in erythromycin biosynthesis, to investigate their potential for the production of diverse novel macrolides from erythronolide precursors. OleP was found to oxidize 6-deoxyerythronolide B, but not erythronolide B. However, OleP did oxidize derivatives of erythronolide B in which a neutral sugar is attached at C-3. The oxidized products 3-O-mycarosyl-8a-hydroxyerythronolide B, 3-O-mycarosyl-8,8a-epoxyerythronolide B, 6-deoxy-8-hydroxyerythronolide B and the olefin 6-deoxy-8,8a-dehydroerythronolide B were all isolated and their structures determined. When oleP and the mycarosyltransferase eryBV were co-expressed in a gene cassette, 3-O-mycarosyl-6-deoxy-8,8a-dihydroxyerythronolide B was directly obtained. When oleG2 was co-expressed in a gene cassette together with oleP, 6-deoxyerythronolide B was converted into a mixture of 3-O-rhamnosyl-6-deoxy-8,8a-dehydroerythronolide B and 3-O-rhamnosyl-6-deoxy-8,8a-dihydroxyerythronolide B, confirming previous reports that OleG2 can transfer rhamnose, and confirming that oxidation by OleP and attachment of the neutral sugar to the aglycone can occur in either order. Similarly, four different 3-O-mycarosylerythronolides were found to be substrates for the desosaminyltransferase OleG1. These results provide additional insight into the nature of the intermediates in OleP-mediated oxidation, and suggest that oleandomycin biosynthesis might follow parallel pathways in which epoxidation either precedes or follows attachment of the neutral sugar.

  12. Learning and Teaching Languages for Communication: Applied Linguistics Perspectives.

    ERIC Educational Resources Information Center

    Brumfit, Christopher, Ed.

    The papers include: "Applied Linguistics and Comunicative Language Teaching" (Christopher Brumfit); "Evaluation of the East Midlands Graded Assessment Feasibility Study" (Elaine S. Freedman); "Aspects of Standardisation within a Communicative Assessment Syllabus" (Nicola Lees); "Experimenting with…

  13. Autumn MIST 2009

    NASA Astrophysics Data System (ADS)

    Forsyth, Colin

    2010-02-01

    MEETING REPORT Colin Forsyth, Nicola Longden, Andrew Walsh and Robert Wicks summarize a MIST meeting where ground-based ionospheric science came under the spotlight, amid the broader concerns of the MIST community.

  14. Strongly Correlated Topological Insulators

    DTIC Science & Technology

    2016-02-03

    6.00 1.00 2.00 3.00 4.00 5.00 Nicolas Regnault, T. Senthil. Microscopic model for the boson integer quantum Hall effect, PHYSICAL REVIEW B (05 2013...accepted) (10 2012) B. Estienne, Z. Papic, N. Regnault, B. A. Bernevig. Matrix product states for trial quantum Hall states, Phys Rev B (11 2012...Simon C. Davenport, Eddy Ardonne, Nicolas Regnault, Steven H. Simon. Spin-singlet Gaffnian wave function for fractional quantum Hall systems

  15. Evidence for existence of different Escherichia coli populations in karst aquifer depending on hydrological conditions and the use of watershed. Fabienne Petit1*, Mehdy Ratajczak1, Nicolas Massei 1, Olivier Clermont 2, Erick Denamur 2, Thierry Berthe1,. 1CNRS UMR 6143 M2C, Université de Rouen, FED SCALE 4116, 76821 Mont Saint Aignan 2 INSERM U722, Université Paris 7 Denis Diderot ,75018 Paris

    NASA Astrophysics Data System (ADS)

    Fabienne, P.; Mehdy, R.; Massei, N.; Clermont, O.; Denamur, E.; Berthe, T.

    2011-12-01

    Escherichia coli (E. coli) is a commensal bacterium of the gastro-intestinal tract of human and vertebrate animals, even if the aquatic environment could be considered as a secondary habitat. During turbids events consecutive to the rainfall, E.coli are released from manure and feces in karstic hydrosystem with different settling velocities, related to their association to particles. In water, survival of E. coli, was dependant to the grazing by protozoans and their ability to overcome environmental stress. In these conditions, viable but non culturable (VNC) population of E. coli, could be observed. The aim of this study was to investigate, in a small well characterized rural karstic watershed (i) the structure of E. coli population based on the survival ability, the distribution in four main phylo-groups (A, B1, B2, D), and the phenotypic characteristics, (ii) the fate and the distribution of viable non culturable E. coli according their settling velocities, from surface water to groundwater. For this purpose we combined microbiology and hydrology approaches, and solid phase cytometry (ChemScan°RDI) methodology was performed to numbered VNC E. coli. The distribution in the four main E. coli phylo-groups (A, B1, B2, D) shown that the E. coli population structure was modified not only by the hydrological conditions but also the use of the watershed (presence of cattle). Survival abilities of E. coli strains based on microcosm experiments, vary from 2 days to at least 14 days. Characterization of E. coli was performed by studying specific traits present in host-associated strains (virulence factors, antibiotic resistance) and those that could be involved in water persistence (growth temperature substrate range, biofilm formation and grazing by protozoa). Three major clusters of strains were defined by using a correspondence factor analysis. In water characterized by high level of fecal contamination a first cluster of E. coli strains was related to A and B2 phylo-group, presented a multiple-antibiotic-resistance profile, and had low survival abilities in water. In slightly contaminated water, E. coli strains were persistent in water, sensitive to antibiotics, and able to develop at low temperature (from 7°C to 20°C) and to degrade macromolecules. In the same karstic hydrosystem, whatever the hydrological conditions, a population of E. coli in VNC state was observed, even in dry period where VNC E. coli raised to 96% of the total viable E. coli population. The distribution of the E. coli VNC population according to their settling velocity varies along the transfer between the swallow hole to the spring. Thus rapid flow inside karstic aquifer supports the culturability of E. coli. In contrast, in during low-flow period with slow transport of contaminant, E. coli lose their culturability but could maintained inside in VNC state in such hydrosystem.

  16. Pose and Wind Estimation for Autonomous Parafoils

    DTIC Science & Technology

    2014-09-01

    1204, Arlington, VA 22202–4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188) Washington DC 20503. 1. AGENCY USE...learn from each one of my dissertation committee members: in the classroom and in the field. To professors Roberto Cristi, Oleg Yakimenko, Xiaoping Yun...field testing is the best engi- neering classroom there is! Thanks are also due to the leadership at Arcturus UAV, D’Milo Hallerberg and Erik Folkestad

  17. Closing the Gap Between Research and Field Applications for Multi-UAV Cooperative Missions

    DTIC Science & Technology

    2013-09-01

    BETWEEN RESEARCH AND FIELD APPLICATIONS FOR MULTI-UAV COOPERATIVE MISSIONS by Harn Chin Teo September 2013 Thesis Co-Advisors: Oleg...APPLICATIONS FOR MULTI-UAV COOPERATIVE MISSIONS 5. FUNDING NUMBERS 6. AUTHOR(S) Harn Chin Teo 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES...MISSIONS Harn Chin Teo Systems Engineer, ST Aerospace Ltd. B.E., Nanyang Technological University (Singapore), 2008 Submitted in partial

  18. Emergence of the Green’s Functions from Noise and Passive Acoustic Remote Sensing of Ocean Dynamics

    DTIC Science & Technology

    2009-09-30

    Acoustic Remote Sensing of Ocean Dynamics Oleg A. Godin CIRES/Univ. of Colorado and NOAA/OAR/Earth System Research Lab., R/PSD99, 325 Broadway...characterization of a time-varying ocean where ambient acoustic noise is utilized as a probing signal. • To develop a passive remote sensing technique for...inapplicable. 3. To quantify degradation of performance of passive remote sensing techniques due to ocean surface motion and other variations of underwater

  19. Multiple Robots Localization Via Data Sharing

    DTIC Science & Technology

    2015-09-01

    LOCALIZATION VIA DATA SHARING by Cheng Leong Ng September 2015 Thesis Advisor: Oleg Yakimenko Co-Advisor: Roberto Cristi THIS PAGE...estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the... data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this

  20. Expression of tNASP in Prostate Cancer: Opportunities for a Novel Diagnostic and Prognostic Biomarker Development

    DTIC Science & Technology

    2013-12-01

    Cancer : Opportunities for a Novel Diagnostic and Prognostic Biomarker Development PRINCIPAL INVESTIGATOR: Oleg M. Alekseev CONTRACTING...Expression of tNASP in Prostate Cancer : Opportunities for a Novel Diagnostic and Prognostic Biomarker Development 5a. CONTRACT NUMBER...Expression of tNASP in Prostate Cancer : Opportunities for a Novel Diagnostic and Prognostic Biomarker Development 5b. GRANT NUMBER W81XWH-12-1-0361

  1. Development of Star Tracker System for Accurate Estimation of Spacecraft Attitude

    DTIC Science & Technology

    2009-12-01

    TRACKER SYSTEM FOR ACCURATE ESTIMATION OF SPACECRAFT ATTITUDE by Jack A. Tappe December 2009 Thesis Co-Advisors: Jae Jun Kim Brij N... Brij N. Agrawal Co-Advisor Dr. Knox T. Millsaps Chairman, Department of Mechanical and Astronautical Engineering iv THIS PAGE...much with my studies here. I would like to especially thank Professors Barry Leonard, Brij Agrawal, Grand Master Shin, and Comrade Oleg Yakimenko

  2. A History of Russian and Soviet Naval Development.

    DTIC Science & Technology

    1988-03-01

    her Eastward expansion. This disquieting period ended with the accession of the Romanov dynasty to the throne 17 ILI 96t Figur 2.317th entuy EAnso ARf...Naval developments during the first two regimes of the Romanov dynasty were small in scale. During the reign of Michael (1613-1645) Cossack pirates...59] By selecting Kiev as his power base, Oleg established the Kievan State, a dynasty which would last until the Mongol invasion of the thirteenth

  3. A dynamical systems perspective for a real-time response to a marine oil spill.

    PubMed

    García-Garrido, V J; Ramos, A; Mancho, A M; Coca, J; Wiggins, S

    2016-11-15

    This paper discusses the combined use of tools from dynamical systems theory and remote sensing techniques and shows how they are effective instruments which may greatly contribute to the decision making protocols of the emergency services for the real-time management of oil spills. This work presents the successful interplay of these techniques for a recent situation, the sinking of the Oleg Naydenov fishing ship that took place in Spain, close to the Canary Islands, in April 2015.

  4. JPRS Report, Science & Technology. USSR: Science & Technology Policy

    DTIC Science & Technology

    2007-11-02

    AKADEMII NAUK SSSR, No 11, Nov 86) 172 Ivan Lyudvigovich Knunyants (VESTNIK AKADEMII NAUK SSSR, No 11, Nov 86) 174 Gadzhi Gamzatovich Gamzatov...USSR Academy of Sciences. The Order of Labor Glory 3d Degree Ivan Aleksandrovich Kapterov—driver of a vehicle of the garage of the Buryat...the Presidium of the East Siberian Affiliate of the Siberian Department of the USSR Academy of Sciences. Oleg Viktorovich Pavlov —deputy director of

  5. Design and Demonstration of RSFQ Processor Datapath for High Performance Computing

    DTIC Science & Technology

    2014-09-30

    2010.2103918 Oleg A. Mukhanov. Energy- Efficient Single Flux Quantum Technology, IEEE Transactions on Applied Superconductivity, (06 2011): 760. doi: 10.1109...Implementation of Energy Efficient Single Flux Quantum (eSFQ) Digital Circuits with sub-aJ/bit Operation, Supercond. Sci. Technol (08 2012) Alex F. Kirichenko...proposed energy- efficient single flux quantum logic with zero static power dissipation, eSFQ. We also demonstrate that the introduction of passive

  6. Precipitation of Al3(Sc,Zr) Particles in a Direct Chill Cast Al-Zn-Mg-Cu-Sc-Zr Alloy During Conventional Solution Heat Treatment and its Effect on Tensile Properties

    DTIC Science & Technology

    2007-12-01

    address: oleg.senkov@wpafb.af.mil; Phone: 937-2551320; Fax: 937-6567292. † Currently at the Institute for Metals Superplasticity Problems, Ufa , Russia...A. Baldan, J. Mater. Science 37 (2002) 2171-2202. 26 H. Risken, The Fokker-Plank equation. Methods of Solution and Applications, Springer- Verlag...Berlin, 1984. 27 C.W. Gardiner, Handbook of Stochastic Methods for Physics, Chemistry and the Natural Sciences, Third Edition, Springer, Berlin

  7. Cross Body Thruster Control and Modeling of a Body of Revolution Autonomous Underwater Vehicle

    DTIC Science & Technology

    2011-03-01

    dfc , is derived using the following formula developed by Whicker and Fehlner [24]: 0.1 0.7dfc t = + (88) where t is the fin taper ratio...Horner Thesis Advisor Oleg Yakimenko Second Reader Knox T . Millsaps Chair, Department of Mechanical and Aerospace Engineering iv...algorithm functions by attempting to drive the heading error to zero: ( ) ( )LOS track t tψ ψ ψ= −% (3) where ( ) ( ) ( ) ( ) ( ) ( ) ( ) 1tan wpt

  8. Insight into Hydrazinium Nitrates, Azides, Dicyanamide, and 5-Azidotetrazolate Ionic Materials from Simulations and Experiments

    DTIC Science & Technology

    2011-04-04

    REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188 Public reporting burden for this collection of information is estimated to average 1 ...currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 1 . REPORT DATE (DD-MM-YYYY) 04-04-2011 2. REPORT TYPE Journal...Dicyanamide, and 5- Azidotetrazolate Ionic Materials from Simulations and Experiments Justin B. Hooper, 1 Oleg Borodin1,2, Stefan Schneider3 1 . Wasatch

  9. A Symposium on Bioluminescence and Chemiluminescence.

    DTIC Science & Technology

    1998-01-01

    Kricka, LJ (USA) Knight, M (UK) Lundin, A (Sweden) McCapra, F (UK) Meighen, E (Canada) Nicolas, J-C (France) Nicolas, M-T (France) O’Kane, D...USA) Pazzagli, M (Italy) Roda, A (Italy) Schaap, P. (USA) Schräm, E (Belgium) Stanley, P (UK) Stewart, G (UK) Szalay, A (USA) Tsuji, A ...in marine Vibrio. (25 min) B.L. Bassler (US) • The Vibrio fischeri LuxR-LuxI system, a model for quorum sensing in Gram-negative bacteria. (20 min

  10. 78 FR 28701 - Unblocking of Specially Designated Nationals and Blocked Persons Pursuant to Executive Order 12978

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-15

    ... Nicolas), c/o DEPOSITO POPULAR DE DROGAS S.A., Cali, Colombia; c/ o DISTRIBUIDORA DE DROGAS CONDOR LTDA... (Colombia) (individual) . 6. FERNANDEZ LUNA, Tiberio, c/o DISTRIBUIDORA DE DROGAS CONDOR S.A., Bogota... DROGAS CONDOR S.A., Bogota, Colombia; c/o COINTERCOS S.A., Bogota, Colombia; c/o FIDUSER LTDA.,...

  11. Implementation of Distance Support (DS) to Reduce Total Ownership Cost (R-TOC)

    DTIC Science & Technology

    2012-02-01

    paper by Nicolas Guertin, PEO-IWS and Paul Bruhns, ManTech International Corp., “Comparing Acquisition Strategies: Maintenance Free Operating Period...Defense Analyses, July 2003. Reed, D. L. and Romer , R. “R-TOC Pilot Lessons Learned / Best Practices,” Institute for Defense Analyses, September

  12. PubMed

    1995-10-18

    Royal London hospital nurses Nicola Eccersley, left, and Cathy Green laid a wreath List week at the statue of nurse Edith Cavell to mark the 80th anniversary' of her death. She was executed in 1915 after helping allied troops escape from occupied Belgium during World War 1.

  13. Camus: A Collection of Critical Essays. Twentieth Century Views Seies.

    ERIC Educational Resources Information Center

    Bree, Germaine, Ed.

    One of a series of works aimed at presenting contemporary critical opinion on major authors, this collection includes essays by Germaine Bree, Nicola Chairmonte, Serge Doubrovsky, Justin O'Brien, Wilfrid Sheed, Roger Quilliot, Thomas L. Hanna, Bernard C. Murchland, Henri Peyre, S. Beynon John, Rachel Bespaloff, Jean-Paul Sartre, Robert Champigny,…

  14. California Coast

    Atmospheric Science Data Center

    2014-05-15

    ... of the San Joaquin valley. Santa Catalina and San Clemente Islands, warmed by the morning sun, are visible through the marine stratus ... bank is San Nicolas Island, and further up the coast are the Channel Islands. The Los Angeles basin is just south of center; San Diego is at ...

  15. The African Heritage in Spanish Caribbean Literature.

    ERIC Educational Resources Information Center

    Smart, Ian I.

    1981-01-01

    Uses Fanon's concept of the Manichean colonial situation and his Dialectical Theory of Identification to explore images of African heritage in the works of two mulatto Cuban poets, Gabriel de la Concepcion Valdez (1809-1844) and Nicolas Guillen (born 1902). (GC)

  16. Endoplasmic Reticulum-Associated Degradation Factor ERLIN2: Oncogenic Roles and Molecular Targeting of Breast Cancer

    DTIC Science & Technology

    2012-06-01

    morphogenesis in Matrigel. Although MCF10A cells formed polarized, growth-arrested acinar structures with hollow lumens similar to the glandular ...differentially regulates luminal and basal progenitors in human mammary epithelium . EMBO Mol Med 2011, 3(3):167–180. 45. Sircoulomb F, Nicolas N

  17. Endoplasmic Reticulum-Associated Degradation Factor ERLIN2: Oncogenic Roles and Molecular Targeting of Breast Cancer

    DTIC Science & Technology

    2012-06-01

    with hollow lumens similar to the glandular architecture in vivo, MCF10A-ERLIN2 cells formed abnormal acini at a high frequency that was grossly...mammary epithelium . EMBO Mol Med 2011, 3(3):167–180. 45. Sircoulomb F, Nicolas N, Ferrari A, Finetti P, Bekhouche I, Rousselet E, Lonigro A, Adelaide J

  18. Women Behaving Badly: Dahl's Witches Meet the Women of the Eighties.

    ERIC Educational Resources Information Center

    Bird, Anne-Marie

    1998-01-01

    Investigates the issue of misogyny in Roald Dahl's 1983 book and Nicolas Roeg's 1989 film, "The Witches." Looks at the general differences in the two texts--the most explicit difference is in the film's ending. Explores the significance of the witch in the book and to what extent Roeg's film uses the implied connection between evil and gender. (PA)

  19. 76 FR 53453 - Environmental Impacts Statements; Notice of Availability

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-26

    ..., Contact: Robert Hawkins 707-562-8699. EIS No. 20110275, Second Draft Supplement, FWS, CA, Southern Sea Otters (Enhydra lutris nereis) Translocation Program, Updated Information to the DSEIS 2005, San Nicolas..., Contact: Bruce Rogers 907- 822-7276. EIS No. 20110279, Final Supplement, MMS, AK, Chukchi Sea...

  20. Proceedings of the Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (11th, New Brunswick, New Jersey, September 20-23, 1989), Volume 2: Plenary Lectures and Symposia.

    ERIC Educational Resources Information Center

    Maher, Carolyn A., Ed.; Goldin, Gerald A., Ed.; Davis, Robert B., Ed.

    This document reports on the 11th annual conference of the North American Chapter of the International Group for the Psychology of Mathematics Education (PME-NA). Plenary and response lectures and speakers include: "The Description and Analysis of Mathematical Processes" (Nicolas Herscovics); "To Know Mathematics is to Go Beyond Thinking That…

  1. University of Glasgow at TREC 2012: Experiments with Terrier in Medical Records, Microblog, and Web Tracks

    DTIC Science & Technology

    2012-11-01

    Univ. of Glasgow, 2003. [2] G. Amati, E. Ambrosi, M. Bianchi, C. Gaibisso, and G. Gambosi. FUB, IASI -CNR and Univ. of Tor Vergata at TREC 2007 Blog track...In Proc. of TREC, 2007. [3] G. Amati, G. Amodeo, M. Bianchi, G. Marcone, C. Gaibisso, A. Celi, C. De Nicola and M. Flammini. FUB, IASI -CNR, UNIVAQ

  2. 76 FR 68719 - Marine Mammals; File No. 14676

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-07

    ... lions (Zalophus californianus) annually on San Nicolas Island off the coast of California for attachment and retrieval of instruments to study the role of blood oxygen store depletion in the dive behavior and foraging ecology of California sea lions. The permit also authorizes harassment of up to...

  3. The Impact of Dynamic Assessment: An Exploration of the Views of Children, Parents and Teachers

    ERIC Educational Resources Information Center

    Lawrence, Nicola; Cahill, Sharon

    2014-01-01

    A qualitative research project was carried out to explore the views of children with special educational needs, their parents and teachers about one aspect of educational psychology practice: the dynamic assessment of cognitive skills. The research was carried out in a highly diverse and inclusive borough in East London, by Nicola Lawrence from…

  4. Arts: Hot tickets 2017

    NASA Astrophysics Data System (ADS)

    Jones, Nicola

    2017-01-01

    Robots, DNA and electricity bask in the limelight, as Blade Runner reboots, Kazakhstan gets energetic and a 'space tapestry' rolls out. It's quite a year -- and key anniversaries hit, too, for Canada, the anthropology dynamo the Peabody Museum and architect Frank Lloyd Wright. Nicola Jones reports.

  5. All about the Pencil

    ERIC Educational Resources Information Center

    Stevens, Sue

    2006-01-01

    This article presents the history of pencils. Graphite, which is the main component that makes pencils write, was first discovered to be useful in marking the sheep of local farmers in Borrowdale, England in 1954. This graphite left a much darker mark than lead, which made it ideal for use by writers and artists. Around, 1795, Nicolas-Jacques…

  6. Portable Electromagnetic Induction Sensor with Integrated Positioning

    DTIC Science & Technology

    2012-04-16

    Fridon Shubitidze, Juan Pablo Fernandez , and Kevin O’Neill. Simultaneous identification of multiple unexploded ordnance using electromagnetic induction...21] Juan Pablo Fernandez , Benjamin Barrowes, Alex Bijamov, Tomasz Grzegorczyk, Nicolas Lhomme, Kevin O’Neill, Irma Shamatava, and Fridon Shubitidze...unexploded ordnance. Geophysics, submitted for publication. 3 [3] Fridon Shubitidze, Ben Barrowes, Irma Shamatava, Juano Pablo Fernndez, and Kevin

  7. Commensal Bacteria Control Cancer Response to Therapy by Modulating the Tumor Microenvironment | Poster

    Cancer.gov

    Noriho Iida, Amiran Dzutsev, C. Andrew Stewart, Loretta Smith, Nicolas Bouladoux, Rebecca A. Weingarten, Daniel A. Molina, Rosalba Salcedo, Timothy Back, Sarah Cramer, Ren-Ming Dai, Hiu Kiu, Marco Cardone, Shruti Naik, Anil K. Patri, Ena Wang, Francesco M. Marincola, Karen M. Frank, Yasmine Belkaid, Giorgio Trinchieri, Romina S. Goldszmid Science 342(6161):967-970, 2013

  8. NATO Enlargement: Is Romania Ready to Join the Alliance?

    DTIC Science & Technology

    2007-11-02

    other East European countries. The autocratic and often cruel brand of socialist ideology practiced by Nicolae Ceausescu left the population...sometimes stormy 1996-98 political caldron, see, Romania: Background and Issues for Congress, by Carl Ek, CSR Report for Congress, August 17, 1998

  9. Maintenance of Genome Stability and Breast Cancer: Molecular Analysis of DNA Damage-Activated Kinases

    DTIC Science & Technology

    2007-03-01

    286:1162-1166. 9. Ding, S. L., L. F. Sheu, J. C. Yu, T. L. Yang, B. F. Chen, F. J. Leu, and C. Y. Shen. 2004. Abnormality of the DNA double-strand...Soustelle, C., M. Vedel, R. Kolodner, and A. Nicolas. 2002. Replication protein A is required for meiotic recombination in Saccharomyces cerevisiae

  10. 77 FR 66587 - Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to Missile Launch...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-06

    ... authorization (LOA) has been issued to the Naval Air Warfare Center Weapons Division, U.S. Navy (Navy), to take three species of seals and sea lions incidental to missile launch operations from San Nicolas Island... northern elephant seals (Mirounga angustirostris), Pacific harbor seals (Phoca vitulina richardsi),...

  11. 76 FR 73600 - Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to Missile Launch...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-29

    ... authorization (LOA) has been issued to the Naval Air Warfare Center Weapons Division, U.S. Navy (Navy), to take three species of seals and sea lions incidental to missile launch operations from San Nicolas Island... northern elephant seals (Mirounga angustirostris), Pacific harbor seals (Phoca vitulina richardsi),...

  12. When Curriculum Meets Art

    ERIC Educational Resources Information Center

    Giardina, Nicola

    2016-01-01

    A three-year grant program at the Metropolitan Museum of Art in New York City encourages teachers to draw connections between curricular topics and works of art. In this article, museum educator Nicola Giardina describes how the program uses inquiry-based lessons to create meaningful learning experiences for underserved students. She highlights…

  13. RaPAL Bulletin, Numbers 5-13, 1988-1990.

    ERIC Educational Resources Information Center

    RaPAL Bulletin, 1988

    1988-01-01

    This document consists of a 3-year compilation (9 issues) of the RaPAL (Research and Practice in Adult Literacy) Bulletin. Typical articles are: "Student Involvement in Research" (a report of a workshop by Alex Golightly, Nick Nicola, and Marilyn Stone); part of a dialogue between Paolo Freire and Ira Shor, writer/educators of Brazil and…

  14. JAK/STAT: the enigma within the mystery of NMDAR-LTD.

    PubMed

    Sacktor, Todd C

    2012-01-26

    In this issue of Neuron, Nicolas et al. (2012) show that JAK2/STAT3 signaling, a canonical pathway for transmitting information from the cell membrane to the nucleus, is critical for NMDAR-LTD, even in the absence of new DNA transcription.

  15. Canadian Mathematics Education Study Group = Groupe Canadien d'etude en didactique des matematiques. Proceedings of the Annual Meeting (St. Catharines, Ontario, Canada, May 27-31, 1989).

    ERIC Educational Resources Information Center

    Pereira-Mendoza, Lionel, Ed.; Quigley, Martyn, Ed.

    These conference proceedings include two invited lectures, four working group reports, five topic group reports, a list of participants, and a list of previous proceedings. The invited lectures were: "Teaching Mathematical Proof: Relevance and Complexity of a Social Approach" (Nicolas Balacheff) and "Geometry Is Alive and…

  16. Classification of central extensions of Lax operator algebras

    SciTech Connect

    Schlichenmaier, Martin

    2008-11-18

    Lax operator algebras were introduced by Krichever and Sheinman as further developments of Krichever's theory of Lax operators on algebraic curves. They are infinite dimensional Lie algebras of current type with meromorphic objects on compact Riemann surfaces (resp. algebraic curves) as elements. Here we report on joint work with Oleg Sheinman on the classification of their almost-graded central extensions. It turns out that in case that the finite-dimensional Lie algebra on which the Lax operator algebra is based on is simple there is a unique almost-graded central extension up to equivalence and rescaling of the central element.

  17. The use of 2-(1-alkoxyalkylidene)-1,3-dicarbonyl compounds in organic synthesis

    NASA Astrophysics Data System (ADS)

    Kudyakova, Yu S.; Bazhin, D. N.; Goryaeva, M. V.; Burgart, Ya V.; Saloutin, V. I.

    2014-02-01

    The review focuses on the methods of synthesis of 2-(1-alkoxyalkylidene)-1,3-dicarbonyl compounds and their chemical transformations. The reactivity of such compounds toward various mono- and dinucleophilic reagents is considered. The potential of these compounds for synthesis of different acyclic, carbo- and heterocyclic molecules is demonstrated. Special attention is paid to the practical use of 2-(1-alkoxyalkylidene)-1,3-dicarbonyl compounds and their derivatives, which are of interest in medicine and for design of new materials. The bibliography includes 226 references. This review is dedicated to Academician Oleg Nikolaevich Chupakhin on the occasion of his 80th birthday.

  18. Classification of central extensions of Lax operator algebras

    NASA Astrophysics Data System (ADS)

    Schlichenmaier, Martin

    2008-11-01

    Lax operator algebras were introduced by Krichever and Sheinman as further developments of Krichever's theory of Lax operators on algebraic curves. They are infinite dimensional Lie algebras of current type with meromorphic objects on compact Riemann surfaces (resp. algebraic curves) as elements. Here we report on joint work with Oleg Sheinman on the classification of their almost-graded central extensions. It turns out that in case that the finite-dimensional Lie algebra on which the Lax operator algebra is based on is simple there is a unique almost-graded central extension up to equivalence and rescaling of the central element.

  19. A Global Operator Approach to Wess-Zumino-Novikov-Witten models

    NASA Astrophysics Data System (ADS)

    Schlichenmaier, Martin

    2007-11-01

    We present a global operator approach to Wess-Zumino-Novikov models for compact Riemann surfaces of arbitrary genus g with N marked points. The approach is based on the multipoint Krichever-Novikov algebras of global meromorphic functions and vector fields, and the global algebras of affine type and their representations. Using the global Sugawara construction and the identification of a certain subspace of the vector field algebra with the tangent space to the moduli space of the geometric data, the Knizhnik-Zamalodchikov connection is defined. For fermionic representations it defines a projectively flat connection on the vector bundle of conformal blocks. The presented work is joint work with Oleg Sheinman.

  20. Model interpretation of cloud observations by the LIDAR on the Phoenix Mars lander

    NASA Astrophysics Data System (ADS)

    Daerden, Frank; Whiteway, J. A.; Davy, R.; Komguem, L.; Dickinson, C.; Taylor, P. A.

    2010-05-01

    Phoenix LIDAR observations [Whiteway et al. 2009] of clouds and precipitation in the planetary boundary layer (PBL) on Mars have been interpreted by a microphysical model for Mars ice clouds in combination with a coupled PBL-Aeolian dust model [Davy et al. 2009, Daerden et al. 2010]. The model simulates nighttime clouds and fall streaks within the PBL that are similar in structure to the LIDAR observations. Sizes of precipitating crystals grow to sizes of 30-50 µm effective radius, comparable to ice crystals observed in precipitation from terrestrial cirrus clouds which are formed under similar meteorological conditions. The observed regular daily pattern of water ice cloud formation and precipitation in the PBL is indicative of a diurnal process in the local water cycle in which the combination of strong daytime vertical mixing and nighttime precipitation of large ice crystals acts to confine water to the PBL [Whiteway et al. 2009]. The simulations support this interpretation. This process may contribute to the seasonal variation of atmospheric humidity. References Daerden, F., J.A. Whiteway, R. Davy, C. Verhoeven, L. Komguem, C. Dickinson, P. A. Taylor, N. Larsen (2010), Simulating Observed Boundary Layer Clouds on Mars, Geophys. Res. Lett., in press Davy, R., P. A. Taylor, W. Weng, and P.-Y. Li (2009), A model of dust in the Martian lower atmosphere, J. Geophys. Res., 114, D04108, doi:10.1029/2008JD010481 Whiteway, J.A., L. Komguem, C. Dickinson, C. Cook, M. Illnicki, J. Seabrook, V. Popovici, T.J. Duck, R. Davy, P.A. Taylor, J. Pathak, D. Fisher, A.I. Carswell, M. Daly, V. Hipkin, L. Tamppari, N. Renno, J. Moores, M. Lemmon, F. Daerden, H. Smith (2009), Mars Water Ice Clouds and Precipitation, Science 325, 68

  1. HiRISE Observations of Dynamical Phenomena on Mars

    NASA Astrophysics Data System (ADS)

    Hansen, Candice; Thomas, Nicolas; McEwen, Alfred

    Candice Hansen, candice.j.hansen@jpl.nasa.gov Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, United States Candice Hansen, candice.j.hansen@jpl.nasa.gov Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, United States Nicolas Thomas, nicolas.thomas@space.unibe.ch University of Bern, Bern, Switzerland Alfred McEwen, mcewen@pirl.lpl.arizona.edu Lunar and Planetary Laboratory, Tucson, Arizona, United States The HiRISE Team Alan Delamere Eric Eliason John Grant Virginia Gulick Kenneth Herkenhoff Laszlo Keszthelyi Randolph Kirk Michael Mellon Steven Squyres Cathy Weitz Chris Okubo Shane Byrne Patrick Russell The presentation will provide a review of recent observations by the HiRISE imaging system onboard the Mars Reconnaissance Orbiter. Emphasis will be placed on dynamical phenomena such as avalanches, dune motion, and jet activity at the poles.

  2. A new bathyal sipunculan from Southern California, with ecological notes

    NASA Astrophysics Data System (ADS)

    Thompson, Bruce E.

    1980-11-01

    Golfingia (Nephasoma) nicolasi n. sp. is described. It is a long, slender species with a filiform introvert that is 6 to 7 times the length of the trunk. The species was often the numerically dominant taxon in samples collected from the San Nicolas Basin, California, and was also callected from several other basins off southern California. Analyses of several collections from the San Nicolas Basin show that the population was spatially patchy; temporal variation was also indicated but only one year was sampled adequately. Average population densities were highest at the base of the slopes descending into the basin from the highly productive Santa Rosa-Cortes Ridge and Tanner Bank. G. nicolasi appears to feed on the large amounts of organic detritus that accumulate from this source.

  3. Folk Theorems on the Correspondence between State-Based and Event-Based Systems

    NASA Astrophysics Data System (ADS)

    Reniers, Michel A.; Willemse, Tim A. C.

    Kripke Structures and Labelled Transition Systems are the two most prominent semantic models used in concurrency theory. Both models are commonly believed to be equi-expressive. One can find many ad-hoc embeddings of one of these models into the other. We build upon the seminal work of De Nicola and Vaandrager that firmly established the correspondence between stuttering equivalence in Kripke Structures and divergence-sensitive branching bisimulation in Labelled Transition Systems. We show that their embeddings can also be used for a range of other equivalences of interest, such as strong bisimilarity, simulation equivalence, and trace equivalence. Furthermore, we extend the results by De Nicola and Vaandrager by showing that there are additional translations that allow one to use minimisation techniques in one semantic domain to obtain minimal representatives in the other semantic domain for these equivalences.

  4. Uta stansburiana and Elgaria multicarinata on the California Channel Islands: Natural dispersal or artificial introduction?

    USGS Publications Warehouse

    Mahoney, Meredith J.; Parks, Duncan S.M.; Fellers, Gary M.

    2003-01-01

    Uta stansburiana and Elgaria multicarinata occur on several California Channel Islands, and recent introduction of some populations has been suggested because of similarity in life-history traits and body size to mainland populations. We sequenced representatives of each species from mainland southern California and some of the islands on which they occur. For each species, cytochrome bsequence divergence is low across the narrow geographic area sampled. Analyses of 14 haplotypes of U. stansburiana suggest long-established residency on Santa Catalina and San Clemente Islands but more recent arrival on San Nicolas and Santa Cruz Islands. Analyses of eight haplotypes of E. multicarinata suggest these lizards may have been recently transported to San Nicolas Island.

  5. Antidotes for Cyanide Poisoning

    DTIC Science & Technology

    2013-01-01

    challenging position as professor ordinarius at the Depart- ment of Anaesthesiology . I pioneered from scratch in this position until 2009. My academic... experience in the Paris Fire Brigade. Clin Toxicol (Phila) 2006; 44 (Suppl 1):37 44. Antidotes for cyanide poisoning Kurt Anseeuwa*, Nicolas Delvaub...hydro- xocobalamin higher than 150 mg/kg. Given the theoretically synergistic action and given the experience in the treatment of the toxicity of

  6. It’s Time to Fight Back: Operationalizing Network Defense

    DTIC Science & Technology

    2010-01-01

    Fall 2010 | 29 Views & Analyses It’s Time to Fight Back “Operationalizing” Network Defense Mr. Nicolas Adam Fraser Lt Col Robert J. Kaufman III...tenant Colonel Rydell as a senior associate with Booz, Allen, and Hamilton. All served tours on the Air Force Computer Emergency Response Team. The...warfare constructs with the goal of ensuring that network warfare operations carry out the Air Force’s stated mission: “to fly, fight , and win . . . in

  7. Puppis

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    (the Poop or Stern; abbrev. Pup, gen. Puppis; area 673 sq. deg.) A southern constellation which lies between Canis Major and Vela, and culminates at midnight in early January. It was introduced by the French astronomer Nicolas L de Lacaille (1713-62), who charted the southern sky in 1751-2, from stars that formed part of the ancient constellation of Argo Navis (the Ship), which had been included ...

  8. History of Sciences in Moldova (Antioch Cantemir and Amphiloch)

    NASA Astrophysics Data System (ADS)

    Gaina, Alex

    1997-02-01

    A short biography with an account of the contribution to astronomy and mathematics by Antioch Cantemir (Kantemir)(1709-1744), one of the first modern Russian writers, ambasadeur of Russia in France, the son of Moldavian prince Dimitrie Cantemir(Kantemir), and disciple of Josef Nicolas de l'Isle is given. The paper contains a comparision with the astronomical part of the "Gramair of Physics" by Amphiloch Hotiniul (1735-1800) concerning extraterestrial life.

  9. An Evaluation of the Arctic - Will it Become an Area of Cooperation or Conflict?

    DTIC Science & Technology

    2011-03-01

    products/f35/. 213 Nicolas von Kospoth, “Norwegian Navy Receives Last of Five Fridtjof Nansen -Class Frigates Defence Professionals,” January 20, 2011...fighter.”212 Norway has also begun the renewal of its ageing Cold war maritime capability. In June of 2000, the government ordered five Fridtjof ... Nansen -class Aegis frigates to replace the aging Oslo-class frigates. As of January 18, 2011, all of the new frigates have been commissioned.213 The

  10. Compact Graphical Representation of Phylogenetic Data and Metadata with GraPh1An

    DTIC Science & Technology

    2016-09-12

    Francesco Asnicar1, George Weingart2, Timothy L. Tickle3, Curtis Huttenhower2,3 and Nicola Segata1 1 Centre for Integrative Biology (CIBIO), University of...Computational Biology , Genomics, Microbiology Keywords Phylogenetic visualization, Graphical representation, Phylogenomics, Metagenomics INTRODUCTION...grant agreement no PCIG13-GA-2013-618833, startup funds from the Centre for Integrative Biology (University of Trento), by MIUR “Futuro in Ricerca

  11. Graph Learning for Anomaly Detection using Psychological Context GLAD-PC

    DTIC Science & Technology

    2015-08-03

    Juan Liu, Bob Price, Jianqiang Shen, Akshay Patil, Richard Chow, Eugene Bart, Nicolas Ducheneaut. Proactive insider threat detection through graph...Price, Oliver Brdiczka, Eugene Bart. Multi-source fusion for anomaly detection:using across-domain and across-time peer-groupconsistency checks...0.25 Mudita Singhal 0.10 Eugene Bart 0.10 Bob Price 0.10 2.25 7 ...... ...... Sub Contractors (DD882) Inventions (DD882) Sub Contractor Numbers (c

  12. Sweetening Android Lemon Markets: Measuring and Curbing Malware in Application Marketplaces

    DTIC Science & Technology

    2012-06-08

    Sweetening Android Lemon Markets: Measuring and Curbing Malware in Application Marketplaces Timothy Vidas and Nicolas Christin...Performance Evaluation Minimal network overhead is crucial as many carriers now have limited data plans . Currently, a typical RSA key found in the...Felt et al. also provide a survey of much of the mobile malware discovered form 2009 to 2011 in [20]. In [34], Vidas et al. observe application

  13. France’s War in Mali: Lessons for an Expeditionary Army

    DTIC Science & Technology

    2014-01-01

    28 3.2. Planned Deployment of SCORPION ...vehicles and dismounted soldiers. Some of the systems are being fi elded now, although the overall system of systems referred to by the French as SCORPION ...Michel Goya, October 3, 2013. Figure 3.2 Planned Deployment of SCORPION SOURCE: Information from Nicolas Perche, " SCORPION Program," Direction générale

  14. Mineral resource of the month: beryllium

    USGS Publications Warehouse

    ,

    2013-01-01

    The article discusses information about Beryllium. It notes that Beryllium is a light metal that has a gray color. The metal is used in the production of parts and devices including bearings, computer-chip heat sinks, and output windows of X-ray tubes. The article mentions Beryllium's discovery in 1798 by French chemist, Louis-Nicolas Vanquelin. It cites that bertrandite and beryl are the principal mineral components for the commercial production of beryllium.

  15. Subspace-Based Bayesian Blind Source Separation for Hyperspectral Imagery

    DTIC Science & Technology

    2009-12-01

    Subspace-based Bayesian blind source separation for hyperspectral imagery Nicolas Dobigeon∗, Saı̈d Moussaoui†, Martial Coulon∗, Jean-Yves Tourneret...In this paper, a fully Bayesian algorithm for endmember extraction and abundance estimation for hyperspectral imagery is in- troduced. Following the...linear mixing model, each pixel spectrum of the hyperspectral image is decomposed as a linear combination of pure endmember spectra. The estimation of

  16. A5: Automated Analysis of Adversarial Android Applications

    DTIC Science & Technology

    2014-06-03

    A5: Automated Analysis of Adversarial Android Applications Timothy Vidas, Jiaqi Tan, Jay Nahata, Chaur Lih Tan, Nicolas Christin...03 JUN 2014 2. REPORT TYPE 3. DATES COVERED 00-00-2014 to 00-00-2014 4. TITLE AND SUBTITLE A5: Automated Analysis of Adversarial Android ...to process Android malware. A5 is a hybrid system combining static and dynamic malware analysis techniques. Android ?s architecture permits many

  17. Aircraft Pilot Situational Awareness Interface for Airborne Operation of Network Controlled Unmanned Systems (US)

    DTIC Science & Technology

    2008-03-01

    2007-2032. 32 Nicola Tesla and his telautomatons (robots); Tesla further demonstrated remote control of objects by wireless in an exhibition in 1898...really piloted; in a more correct sense, the controllers augment the autopilot .107 This means that every command the pilot gives to the air vehicle...is in fact a command to the autopilot to command the air vehicle. All the unique characteristics of unmanned aviation define a unique set of

  18. Simulation of Ductile Failure in Metals Under Dynamic Loading Conditions Using Advanced Material Damage Modeling

    DTIC Science & Technology

    2004-07-01

    Strutture Ambiente e Territorio Facoltà di Ingegneria Università di Cassino via Di Biasio 43, 03043 Cassino (FR), Italy RESEARCH...Disclosure of all subject inventions as defined in FAR 52.227-13 have been reported in accordance with this clause I certify that there were...no subject inventions to declare as defined in FAR 52.227-13, during the performance of this contract. Date: July 15, 2004 Nicola Bonora

  19. Argo Navis

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    (the Ship) a large southern constellation representing the ship Argo of Jason and the Argonauts in Greek mythology whose brightest stars were cataloged by Ptolemy (c. AD 100-175) in the Almagest. It was divided up by the French astronomer Nicolas L de Lacaille (1713-62), who charted the southern sky in 1751-2, into the constellations Carina (the Keel), Vela (the Sails), Puppis (the Poop or Stern)...

  20. Messier, Charles (1730-1817)

    NASA Astrophysics Data System (ADS)

    Murdin, P.

    2000-11-01

    Comet seeker, nebula avoider, born in Badonvillier, Lorraine, France, became interested in astronomy as a child. Went to Paris, employed by JOSEPH-NICOLAS DELISLE to search for Comet Halley on the 1757 return. While doing so, he discovered a comet-like patch in Taurus on the comet's expected path. The patch did not move, and he later identified it as a nebula (now known as the Crab Nebula),...

  1. California sea otter (Enhydra lutris nereis) census results, Spring 2016

    USGS Publications Warehouse

    Tinker, M. Tim; Hatfield, Brian B.

    2016-09-19

    The 2016 census of southern sea otters Enhydra lutris nereis was conducted in May along the mainland coast of central California and in April at San Nicolas Island in southern California. The 3-year average of combined counts from the mainland range and San Nicolas Island was 3,272. This is the first year that the official index has exceeded 3,090, the Endangered Species Act delisting threshold suggested by the U.S. Fish and Wildlife Service (the threshold would need to be exceeded for 3 consecutive years before delisting consideration). The 5-year average trend in abundance, including both the mainland range and San Nicolas Island populations, is positive at 3.2 percent per year; however, regional trends vary, with localized declines at the southern and northern peripheries of the mainland range. The lack of population growth in the range peripheries over recent years likely explains the cessation of range expansion, with the range limits remaining almost unchanged from the previous 5 years.

  2. List of Participants

    NASA Astrophysics Data System (ADS)

    2007-11-01

    Mohab Abou ZeidVrije Universiteit, Brussel Joke AdamKatholieke Universiteit Leuven Nikolas AkerblomMax-Planck-Institut für Physik, München Luis Fernando Alday Utrecht University Stelios Alexandris University of Patras Antonio Amariti Università di Milano-Bicocca Nicola Ambrosetti Université de Neuchâtel Pascal Anastasopoulos Università di Roma Tor Vergata Laura Andrianopoli Enrico Fermi Center Carlo Angelantonj Università di Torino Lilia Anguelova Queen Mary, University of London Daniel AreanUniversidade de Santiago de Compostela Gleb ArutyunovUtrecht University Spyros Avramis NTU Athens—University of Patras Ioannis Bakas University of Patras Subrata Bal Dublin Institute for Advanced Studies Igor Bandos Valencia University Jessica Barrett University of Iceland Marco Baumgartl Eidgenössische Technische Hochschule, Zürich Jacopo Bechi Università di Firenze James Bedford Queen Mary, University of London Jorge Bellorin Universidad Autonoma de Madrid Francesco Benini SISSA, Trieste Eric Bergshoeff Centre for Theoretical Physics, University of Groningen Gaetano BertoldiUniversity of Wales, Swansea Adel Bilal Laboratoire de Physique Théorique, École Normale Superieure, Paris Matthias Blau Université de Neuchâtel Johannes BroedelUniversität Hannover Felix Brümmer Universität Heidelberg Julio Cesar Bueno de Andrade São Paulo State University—UNESP Cliff Burgess McMaster University Agostino Butti Laboratoire de Physique Théorique, École Normale Superieure, Paris Marco Caldarelli Universitat de Barcelona Pablo G Camara Centre de Physique Théorique, École Polytechnique, Palaiseau Joan Camps Universitat de Barcelona Felipe Canoura FernandezUniversidade de Santiago de Compostela Luigi Cappiello Università di Napoli Federico II Luca Carlevaro École Polytechnique, Palaiseau Roberto Casero Centre de Physique Théorique, École Polytechnique, Palaiseau Claudio Caviezel Max-Planck-Institut für Physik, München Alessio Celi Universitat de Barcelona Anna

  3. Insights on a Marine Oil Spill from a dynamical system perspective

    NASA Astrophysics Data System (ADS)

    Mancho, Ana M.; Garcia-Garrido, Victor J.; Ramos, Antonio G.; Coca, Josep; Wiggins, Stephen

    2016-11-01

    We use tools from dynamical systems theory and remote sensing techniques and show how they are effective instruments which may greatly contribute to the decision-making protocols of the emergency services in the real-time management of oil spills. This work presents the successful interplay of these techniques for a recent situation, the sinking of the Oleg Naydenov fishing ship that took place in Spain, close to the Canary Islands, in April 2015. This research is supported by MINECO ICMAT Severo Ochoa project SEV-2011-0087 and Grants MTM2014-56392-R, UNLP-13-3E-2664 (2013-2015) and ONR Grant No. N00014- 01-1-0769.

  4. Organic Cultivation of Triticum turgidum subsp. durum Is Reflected in the Flour-Sourdough Fermentation-Bread Axis

    PubMed Central

    Rizzello, Carlo Giuseppe; Cavoski, Ivana; Turk, Jelena; Ercolini, Danilo; Nionelli, Luana; Pontonio, Erica; De Angelis, Maria; De Filippis, Francesca; Gobbetti, Marco

    2015-01-01

    Triticum turgidum subsp. durum was grown according to four farming systems: conventional (CONV), organic with cow manure (OMAN) or green manure (OLEG), and without inputs (NOINPUT). Some chemical and technological characteristics differed between CONV and organic flours. As shown by two-dimensional electrophoresis (2-DE) analysis, OMAN and OLEG flours showed the highest number of gliadins, and OMAN flour also had the highest number of high-molecular-mass glutenins. Type I sourdoughs were prepared at the laboratory level through a back-slopping procedure, and the bacterial ecology during sourdough preparation was described by 16S rRNA gene pyrosequencing. Before fermentation, the dough made with CONV flour showed the highest bacterial diversity. Flours were variously contaminated by genera belonging to the Proteobacteria, Firmicutes, and Actinobacteria. Mature sourdoughs were completely and stably dominated by lactic acid bacteria. The diversity of Firmicutes was the highest for mature sourdoughs made with organic and, especially, NOINPUT flours. Beta diversity analysis based on the weighted UniFrac distance showed differences between doughs and sourdoughs. Those made with CONV flour were separated from the other with organic flours. Lactic acid bacterium microbiota structure was qualitatively confirmed through the culturing method. As shown by PCR-denaturing gradient gel electrophoresis (DGGE) analysis, yeasts belonging to the genera Saccharomyces, Candida, Kazachstania, and Rhodotorula occurred in all sourdoughs. Levels of bound phenolic acids and phytase and antioxidant activities differed depending on the farming system. Mature sourdoughs were used for bread making. Technological characteristics were superior in the breads made with organic sourdoughs. The farming system is another determinant affecting the sourdough microbiota. The organic cultivation of durum wheat was reflected along the flour-sourdough fermentation-bread axis. PMID:25724957

  5. Organic cultivation of Triticum turgidum subsp. durum is reflected in the flour-sourdough fermentation-bread axis.

    PubMed

    Rizzello, Carlo Giuseppe; Cavoski, Ivana; Turk, Jelena; Ercolini, Danilo; Nionelli, Luana; Pontonio, Erica; De Angelis, Maria; De Filippis, Francesca; Gobbetti, Marco; Di Cagno, Raffaella

    2015-05-01

    Triticum turgidum subsp. durum was grown according to four farming systems: conventional (CONV), organic with cow manure (OMAN) or green manure (OLEG), and without inputs (NOINPUT). Some chemical and technological characteristics differed between CONV and organic flours. As shown by two-dimensional electrophoresis (2-DE) analysis, OMAN and OLEG flours showed the highest number of gliadins, and OMAN flour also had the highest number of high-molecular-mass glutenins. Type I sourdoughs were prepared at the laboratory level through a back-slopping procedure, and the bacterial ecology during sourdough preparation was described by 16S rRNA gene pyrosequencing. Before fermentation, the dough made with CONV flour showed the highest bacterial diversity. Flours were variously contaminated by genera belonging to the Proteobacteria, Firmicutes, and Actinobacteria. Mature sourdoughs were completely and stably dominated by lactic acid bacteria. The diversity of Firmicutes was the highest for mature sourdoughs made with organic and, especially, NOINPUT flours. Beta diversity analysis based on the weighted UniFrac distance showed differences between doughs and sourdoughs. Those made with CONV flour were separated from the other with organic flours. Lactic acid bacterium microbiota structure was qualitatively confirmed through the culturing method. As shown by PCR-denaturing gradient gel electrophoresis (DGGE) analysis, yeasts belonging to the genera Saccharomyces, Candida, Kazachstania, and Rhodotorula occurred in all sourdoughs. Levels of bound phenolic acids and phytase and antioxidant activities differed depending on the farming system. Mature sourdoughs were used for bread making. Technological characteristics were superior in the breads made with organic sourdoughs. The farming system is another determinant affecting the sourdough microbiota. The organic cultivation of durum wheat was reflected along the flour-sourdough fermentation-bread axis.

  6. Optimization of Multistage Extraction of Olive Leaves for Recovery of Phenolic Compounds at Moderated Temperatures and Short Extraction Times

    PubMed Central

    Stamatopoulos, Konstantinos; Chatzilazarou, Archontoula; Katsoyannos, Evangelos

    2013-01-01

    The aim of the present study was to improve the recovery of polyphenols from olive leaves (OL) by optimizing a multistage extraction scheme; provided that the olive leaves have been previously steam blanched. The maximum total phenol content expressed in ppm caffeic acid equivalents was obtained at pH 2, particle size 0.315 mm, solid-liquid ratio 1:7 and aqueous ethanol concentration 70% (v/v). The optimum duration time of each extraction stage and the operation temperature, were chosen based on qualitative and quantitative analysis of oleuropein (OLE), verbascoside, luteolin-7-O-glucoside and apigenin-7-O-glucoside performed by high performance liquid chromatography with diode array detector (HPLC-DAD). The optimum conditions for multistage extraction were 30 min total extraction time (10 min × 3 stages) at 85 °C. The 80% of the total yield of polyphenols was obtained at the 1st stage of the extraction. The total extraction yield of oleuropein was found 23 times higher (103.1 mg OLE/g dry weight (d.w.) OL) compared to the yield (4.6 mg OLE/g d.w. OL) obtained by the conventional extraction method (40 °C, 48 h). However, from an energetic and hence from an economical point of view it is preferable to work at 40 °C, since the total extraction yield of polyphenolic compounds was only 17% higher for a double increase in the operating temperature (i.e., 85 °C). PMID:28234304

  7. Uranium-Series Ages of Marine Terrace Corals from the Pacific Coast of North America and Implications for Last-Interglacial Sea Level History

    NASA Astrophysics Data System (ADS)

    Muhs, Daniel R.; Kennedy, George L.; Rockwell, Thomas K.

    1994-07-01

    Few of the marine terraces along the Pacific coast of North America have been dated using uranium-series techniques. Ten terrace sequences from southern Oregon to southern Baja California Sur have yielded fossil corals in quantities suitable for U-series dating by alpha spectrometry. U-series-dated terraces representing the ˜80,000 yr sea-level high stand are identified in five areas (Bandon, Oregon; Point Arena, San Nicolas Island, and Point Loma, California; and Punta Banda, Baja California); terraces representing the ˜125,000 yr sea-level high stand are identified in eight areas (Cayucos, San Luis Obispo Bay, San Nicolas Island, San Clemente Island, and Point Loma, California; Punta Bands and Isla Guadalupe, Baja California; and Cabo Pulmo, Baja California Sur). On San Nicolas Island, Point Loma, and Punta Bands, both the ˜80,000 and the ˜125,000 yr terraces are dated. Terraces that may represent the ˜105,000 sea-level high stand are rarely preserved and none has yielded corals for U-series dating. Similarity of coral ages from midlatitude, erosional marine terraces with coral ages from emergent, constructional reefs on tropical coastlines suggests a common forcing mechanism, namely glacioeustatically controlled fluctuations in sea level superimposed on steady tectonic uplift. The low marine terrace dated at ˜125,000 yr on Isla Guadalupe, Baja California, presumed to be tectonically stable, supports evidence from other localities for a +6-m sea level at that time. Data from the Pacific Coast and a compilation of data from other coasts indicate that sea levels at ˜80,000 and ˜105,000 yr may have been closer to present sea level (within a few meters) than previous studies have suggested.

  8. Uranium-Series Ages of Marine Terrace Corals from the Pacific Coast of North America and Implications for Last-Interglacial Sea Level History

    USGS Publications Warehouse

    Muhs, D.R.; Kennedy, G.L.; Rockwell, T.K.

    1994-01-01

    Few of the marine terraces along the Pacific coast of North America have been dated using uranium-series techniques. Ten terrace sequences from southern Oregon to southern Baja California Sur have yielded fossil corals in quantities suitable for U-series dating by alpha spectrometry. U-series-dated terraces representing the ???80,000 yr sea-level high stand are identified in five areas (Bandon, Oregon; Point Arena, San Nicolas Island, and Point Loma, California; and Punta Banda, Baja California); terraces representing the ???125,000 yr sea-level high stand are identified in eight areas (Cayucos, San Luis Obispo Bay, San Nicolas Island, San Clemente Island, and Point Loma, California; Punta Bands and Isla Guadalupe, Baja California; and Cabo Pulmo, Baja California Sur). On San Nicolas Island, Point Loma, and Punta Bands, both the ???80,000 and the ???125,000 yr terraces are dated. Terraces that may represent the ???105,000 sea-level high stand are rarely preserved and none has yielded corals for U-series dating. Similarity of coral ages from midlatitude, erosional marine terraces with coral ages from emergent, constructional reefs on tropical coastlines suggests a common forcing mechanism, namely glacioeustatically controlled fluctuations in sea level superimposed on steady tectonic uplift. The low marine terrace dated at ???125,000 yr on Isla Guadalupe, Baja California, presumed to be tectonically stable, supports evidence from other localities for a +6-m sea level at that time. Data from the Pacific Coast and a compilation of data from other coasts indicate that sea levels at ???80,000 and ???105,000 yr may have been closer to present sea level (within a few meters) than previous studies have suggested.

  9. SuperB evaluation of DIRAC Distributed Infrastructure

    NASA Astrophysics Data System (ADS)

    Fella, A.; Donvito, G.; Santeramo, B.; Gianoli, A.; Luppi, E.; Manzali, M.; Tomassetti, L.; Rama, M.; Russo, G.; Pardi, S.; Del Prete, D.; Stroili, R.; Corvo, M.; Longo, S.; Perez, A.; Di Simone, A.; Bianchi, F.; Luitz, S.; Giacomini, F.; Ciaschini, V.

    2012-12-01

    The SuperB asymmetric energy e+e- collider and detector to be built at the newly founded Nicola Cabibbo Lab will provide a uniquely sensitive probe of New Physics in the flavour sector of the Standard Model. SuperB distributed computing group performed a detailed evaluation of DIRAC Distributed Infrastructure for use in the SuperB experiment based on the two use cases: End User Analysis and Monte Carlo Production. Test aims to evaluate DIRAC capabilities to manage both gLite and OSG sites, File Catalog management, job and data management features in SuperB realistic use cases.

  10. Astronomical researches in Poincaré's and Romanian works

    NASA Astrophysics Data System (ADS)

    Stavinschi, M.; Mioc, V.

    2005-09-01

    Henri Poincaré was not only a honorary member of the Romanian Academy, but also an important collaborator of many Romanian mathematicians and astronomers. It is sufficient to mention Spiru Haret, the first doctor in mathematics at Sorbonne, or Nicolae Coculescu, the first director of the Astronomical Observatory of Bucharest. The 150th anniversary of the birth of the illustrious French personality offered us a good opportunity to study the relations he and two other Poincaré, Raymond and Lucien, had with Romania.

  11. Hookworm enteritis with bacteremia in California sea lion pups on San Miguel Island.

    PubMed

    Spraker, Terry R; DeLong, Robert L; Lyons, Eugene T; Melin, Sharon R

    2007-04-01

    Large breeding populations of California sea lions (Zalophus californianus) are located on San Miguel and San Nicolas Islands in the Southern California Bight. In 2001, there was a substantial increase in pup mortality in late summer and fall. From June 2002 to January 2003, 208 freshly dead pups were examined on San Miguel Island, the most western of the Channel Islands off the coast of southern California. Tissues from 186 of these pups were examined histologically. The primary lesions in 133 (72%) of the pups were an enteritis associated with hookworms and infections in major organs. Emaciation/starvation in 43 pups (26%) was the second most important cause of death.

  12. Bound Electron States in Skew-symmetric Quantum Wire Intersections

    DTIC Science & Technology

    2014-01-01

    in transistors, solar cells , LEDs, and diode lasers. They have also investigated quantum dots as agents for medical imaging and as possible qubits in... solar cells .” Chemical reviews 110.11 (2010): 6873-6890. [9] Bonadeo, Nicolas H., et al. ”Coherent optical control of the quantum state of a single...dots on GaAs /InP , (inset) a single InAs quantum dot. two reasons. First, the superposition of the ground and excited states de- phases more slowly in

  13. Under the mirror of the sleeping water: Poussin's Narcissus.

    PubMed

    Tutter, Adele

    2014-12-01

    Examined in conjunction with a close reading of Ovid's Metamorphoses, Nicolas Poussin's four paintings on the preoccupying theme of Narcissus and Echo reflect a developing aesthetic interpretation of its textual source. Poussin's reflective vision supports a radical reappraisal of the enigmatic myth at the heart of psychoanalytic theory and practice, in which Narcissus is construed as a far more object-related figure that seeks the formative, affirmative mirroring of the other. This in turn encourages a more versatile conceptualization of narcissistic disturbance, in which an etiologically heterogenous constellation of issues stems from a variety of disturbances in the myriad dynamic and developmental aspects of mirroring and attunement: the narcissisms.

  14. Pluriannual variability of sedimentation on mudflats in a macrotidal estuary

    NASA Astrophysics Data System (ADS)

    Cuvilliez, A.; Lafite, R.; Deloffre, J.; Massei, N.; Langlois, E.; Sakho, I.

    2010-12-01

    Antoine Cuvilliez1, Robert Lafite2, Julien Deloffre2, Nicolas Massei2, Estelle Langlois 3 and Issa Sakho2 1 Université du Havre, FRE 3102, Laboratoire d’ondes et milieux complexes, Université du Havre, 76058 Le Havre cedex, France 2 Université de Rouen, UMR 6143, Morphodynamique Continentale et Côtière, 76821 Mont Saint Aignan Cedex, France. 3 Université de Rouen, ECODIV , Etude et Compréhension de la Biodiversité, 76821 Mont Saint Aignan Cedex, France.

  15. Black pepper powder microbiological quality improvement using DBD systems in atmospheric pressure

    NASA Astrophysics Data System (ADS)

    Grabowski, Maciej; Hołub, Marcin; Balcerak, Michał; Kalisiak, Stanisław; Dąbrowski, Waldemar

    2015-07-01

    Preliminary results are given regarding black pepper powder decontamination using dielectric barrier discharge (DBD) plasma in atmospheric pressure. Three different DBD reactor constructions were investigated, both packaged and unpackaged material was treated. Due to potential, industrial applications, in addition to microbiological results, water activity, loss of mass and the properties of packaging material, regarding barrier properties were investigated. Argon based treatment of packed pepper with DBD reactor configuration is proposed and satisfactory results are presented for treatment time of 5 min or less. Contribution to the topical issue "The 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV)", edited by Nicolas Gherardi, Ronny Brandenburg and Lars Stollenwark

  16. The First Three Catalogues of Southern Star Clusters and Nebulae

    NASA Astrophysics Data System (ADS)

    Cozens, Glen; Orchiston, W.; Walsh, A.

    2011-01-01

    Nicolas de la Caille, James Dunlop and John Herschel compiled the first three catalogues of southern star clusters and nebulae. Lacaille catalogued 42 objects from Cape Town, South Africa, in 1751 and 1752. Dunlop catalogued 629 objects from Parramatta, Australia, in 1826 and Herschel catalogued 1708 objects between 1834 and 1838 from Cape Town. Many of these objects had not been seen before; In this paper we discuss the new discoveries and the accuracy of the positions supplied by Lacaille, Dunlop and Herschel. Half of Dunlop's 629 objects turned out to be asterisms and faint double stars.

  17. Europe's education experiment

    NASA Astrophysics Data System (ADS)

    Banks, Michael

    2009-06-01

    Written on the seal of the University of Bologna - founded in 1088 and regarded as the oldest degree-granting university in the western world - are the words Alma mater studiorum. Translated into English, they mean, literally, "Nourishing mother of studies", which is apt given that the university's almuni include the astronomers Nicolas Copernicus and Giovanni Domenico Cassini - the first to observe Saturn's four moons. But Bologna has a much more recent claim to fame in the world of education: it was at the university that plans to create a common European higher-education system were set in motion exactly 10 years ago this month.

  18. The Perruche case and the issue of compensation for the consequences of medical error.

    PubMed

    Costich, Julia Field

    2006-08-22

    The case of Nicolas Perruche gave rise to a national debate in France over compensation for serious consequences of medical error. Ultimately, legislation was enacted banning the cause of action known in Anglo-American law as wrongful life, and an agency was established to adjudicate subsequent claims. As other developed nations continue to wrestle with rapid increases in the cost of professional liability coverage and health care in general, a review of the Perruche case and its influence on French health policy may advance the discussion beyond the current stalemate of hardened advocacy positions.

  19. Sighting Characteristics and Photo-Identification of Cuvier’s Beaked Whales (Ziphius Cavirostris) Near San Clemente Island, California: A Key Area for Beaked Whales and the Military?

    DTIC Science & Technology

    2009-01-01

    Elizabeth, McKenna , Megan F., et al.(2009). Sighting characteristics and photo-identification of Cuvier’s beaked whales (Ziphius cavirostris) near San...conducted a series of five combined visual-acoustic marine mammal surveys from 2006 to 2008 in the southern San Nicolas Basin, a site of frequent naval...hydrophones at depths up to 1,850 m. The array was used to vector visual observers toward vocalizing marine mammal species. Thirty-seven groups of Cuvier’s

  20. A Possible Link Between Macroscopic Wear and Temperature Dependent Friction Behaviors of MoS2 Coatings

    DTIC Science & Technology

    2008-09-01

    Alvarez Æ Nathan A. Mauntler Æ Nicolas Argibay Æ Rachel Colbert Æ David L. Burris Æ Chris Muratore Æ Andrey A. Voevodin Æ Scott S. Perry Æ W. Gregory...composites. Wear 153, 229–243 (1992). doi:10.1016/0043-1648(92)90271-9 14. McLaren, K., Tabor , D.: Visco-elastic properties and friction of solids—friction of...polymers—influence of speed and tempera- ture. Nature 197, 856–858 (1963) 15. Pooley, C.M., Tabor , D.: Friction and molecular structure— behavior of

  1. Pharmacy and Chemistry in the Eighteenth Century: What Lessons for the History of Science?

    PubMed

    Simon, Jonathan

    2014-01-01

    This essay questions the continuity of chemistry across the eighteenth century based on an analysis of its relationship to pharmacy in France. Comparing a text by Nicolas Lémery (1675) with one by Antoine Baumé (1773), the article argues for a key transformation in chemistry across this period. The elimination of the practical side of pharmacy (indications and dosages) from chemistry texts is symptomatic of a reorientation of chemistry toward more theoretical or philosophical concerns. The essay considers several possible explanations for this change in orientation, including developments within pharmacy, but in the end privileges an approach in terms of the changing publics for chemistry in eighteenth-century France.

  2. Music, Mechanism, and the "Sonic Turn" in Physical Diagnosis.

    PubMed

    Pesic, Peter

    2016-04-01

    The sonic diagnostic techniques of percussion and mediate auscultation advocated by Leopold von Auenbrugger and R. T. H. Laennec developed within larger musical contexts of practice, notation, and epistemology. Earlier, François-Nicolas Marquet proposed a musical notation of pulse that connected felt pulsation with heard music. Though contemporary vitalists rejected Marquet's work, mechanists such as Albrecht von Haller included it into the larger discourse about the physiological manifestations of bodily fluids and fibers. Educated in that mechanistic physiology, Auenbrugger used musical vocabulary to present his work on thoracic percussion; Laennec's musical experience shaped his exploration of the new timbres involved in mediate auscultation.

  3. Proceedings of the International Conference (7th) on Machine Learning Held in Austin, Texas on 21-23 June 1990

    DTIC Science & Technology

    1990-06-23

    Lebbe, J. Nicolas, P.Peter, R. Vignes : Conceptual clustering in biology applications and perspectives. In Data Analysis, Learning symbolic and numeric...never overgeneralize a positive example. E2r E R n Sol . A class of learning problemsP will be This is a strong assumption, but it does not requiresaid...of the problem space. Our sol - The graph suggests that it is necessary to learn to ution to this problem requires that we derive a number bae th pole

  4. Human-Robot Interaction: A Survey

    DTIC Science & Technology

    2007-01-01

    operated devices with no or minimal autonomy (Figure 2.1). In 1898, Nicola Tesla demon - strated a radio-controlled boat, which he described as incorporating...vol. 33, no. 3, pp. 325–336, 2003. [110] M. A. Goodrich, E. R. Boer, J. W. Crandall, R. W. Ricks, and M. L. Quigley, “Behavioral entropy in human...Factors, 2003. [174] P. C. Leger, A. Trebi-Ollennu, J. R. Wright, S. A. Maxwell , R. G. Bonitz, J. J. Biesiadecki, F. R. Hartman, B. K. Cooper, E. T

  5. Observed reflectivities and liquid water content for marine stratocumulus

    NASA Technical Reports Server (NTRS)

    Coakley, J. A., Jr.; Snider, J. B.

    1989-01-01

    Simultaneous observations of cloud liquid water content and cloud reflectivity are used to verify their parametric relationship in a manner consistent with simple parameterizations often used in general-circulation climate models. The column amount of cloud liquid water was measured with a microwave radiometer on San Nicolas Island as described by Hogg et al., (1983). Cloud reflectivity was obtained through spatial coherence analysis of AVHRR imagery data as per Coakley and Baldwin (1984) and Coakley and Beckner (1988). The dependence of the observed reflectivity on the observed liquid water is discussed, and this empirical relationship is compared with the parameterization proposed by Stephens (1978).

  6. The Security of the South Atlantic: Is It a Case for ’SATO’--South Atlantic Treaty Organization

    DTIC Science & Technology

    1982-05-10

    of naval chiefs held in Lima , Peru, when the 174 Uruguayan Naval Chief, Admiral Hugo Marquez defended the need of such 22 F an alliance to face Soviet...compromise its entire pragmatic foreign policy. President I ~Joao Figueiredo in his visit to Lima , Peru, in June 1981, closed all I speculations on Brazil’s...p. 704. 21Ibid. 2 2 Ibid. 2 3A.R.A. Nicolas Piccaluga, Control Del Trafico Maritimo en el Atlantic Sud. Politics para la Defensa v Seguridad de las

  7. Anatomical Lecture on a Dishwasher

    NASA Astrophysics Data System (ADS)

    van de Giesen, Nick

    2016-04-01

    The dishwasher died after faithfully serving the household for over seventeen years. One would expect a MacGyver treasure trove of parts to be found inside. Here, we will present what could be salvaged from a dishwasher that could be of use to hydrological research. The dishwasher's demise was too close to the submission deadline to promise anything in detail but there will be pumps, valves, level sensors, temperature sensors and, perhaps, a turbidity sensor. In addition, there may be more generic parts of interest such as timers, transformers and heaters. What will be presented is a hydrology oriented anatomy lesson of a dishwasher that would make Dr. Nicolaes Tulp proud.

  8. Development and characterization of 12 microsatellite markers for the Island Night Lizard (Xantusia riversiana), a threatened species endemic to the Channel Islands, California, USA

    USGS Publications Warehouse

    O'Donnell, Ryan P.; Drost, Charles A.; Mock, Karen E.

    2014-01-01

    The Island Night Lizard is a federally threatened species endemic to the Channel Islands of California. Twelve microsatellite loci were developed for use in this species and screened in 197 individuals from across San Nicolas Island, California. The number of alleles per locus ranged from 6 to 21. Observed heterozygosities ranged from 0.520 to 0.843. These microsatellite loci will be used to investigate population structure, effective population size, and gene flow across the island, to inform protection and management of this species.

  9. [Lady's work and bestseller: the remedies of Madame Fouquet].

    PubMed

    Lafont, Olivier

    2010-04-01

    During the 17th century, Mrs Fouquet who was the mother of the minister of Finances, Nicolas Fouquet, was a charitable Lady who prepared medicines and distributed these remedies to poor people. One of her sons, Louis, who was the bishop of Agde, decided to publish his mother's formulas. He asked his own doctor, named Delescure, to carry out the edition of the formulas he had collected from his mother. The book was first published in 1675, and it twas published again more than fifty times, until 1765. This book was very useful for charitable Ladies and clergymen who purchased poor people with medicines.

  10. Music, Mechanism, and the “Sonic Turn” in Physical Diagnosis

    PubMed Central

    Pesic, Peter

    2016-01-01

    The sonic diagnostic techniques of percussion and mediate auscultation advocated by Leopold von Auenbrugger and R. T. H. Laennec developed within larger musical contexts of practice, notation, and epistemology. Earlier, François-Nicolas Marquet proposed a musical notation of pulse that connected felt pulsation with heard music. Though contemporary vitalists rejected Marquet's work, mechanists such as Albrecht von Haller included it into the larger discourse about the physiological manifestations of bodily fluids and fibers. Educated in that mechanistic physiology, Auenbrugger used musical vocabulary to present his work on thoracic percussion; Laennec's musical experience shaped his exploration of the new timbres involved in mediate auscultation. PMID:26349757

  11. List of Participants

    NASA Astrophysics Data System (ADS)

    2008-11-01

    Mohab Abou ZeidInstitut des Hautes Études Scientifiques, Bures-sur-Yvette Ido AdamMax-Planck-Institut für Gravitationsphysik (AEI), Potsdam Henrik AdorfLeibniz Universität Hannover Mohammad Ali-AkbariIPM, Tehran Antonio Amariti Università di Milano-Bicocca Nicola Ambrosetti Université de Neuchâtel Martin Ammon Max-Planck-Institut für Physik, München Christopher AndreyÉcole Polytechnique Fédérale de Lausanne (EPFL) Laura AndrianopoliPolitecnico di Torino David AndriotLPTHE, Université UPMC Paris VI Carlo Angelantonj Università di Torino Pantelis ApostolopoulosUniversitat de les Illes Balears, Palma Gleb ArutyunovInstitute for Theoretical Physics, Utrecht University Davide AstolfiUniversità di Perugia Spyros AvramisUniversité de Neuchâtel Mirela BabalicChalmers University, Göteborg Foday BahDigicom Ioannis Bakas University of Patras Igor BandosUniversidad de Valencia Jose L F BarbonIFTE UAM/CSIC Madrid Till BargheerMax-Planck-Institut für Gravitationsphysik (AEI), Potsdam Marco Baumgartl Eidgenössische Technische Hochschule (ETH), Zürich James BedfordImperial College London Raphael BenichouLaboratoire de Physique Théorique, École Normale Supérieure, Paris Francesco Benini SISSA, Trieste Eric Bergshoeff Centre for Theoretical Physics, University of Groningen Alice BernamontiVrije Universiteit, Brussel Julia BernardLaboratoire de Physique Théorique, École Normale Supérieure, Paris Adel Bilal Laboratoire de Physique Théorique, École Normale Supérieure, Paris Marco Billo' Università di Torino Matthias Blau Université de Neuchâtel Guillaume BossardAlbert-Einstein-Institut, Golm Leonardo BriziÉcole Polytechnique Fédérale de Lausanne (EPFL) Johannes BroedelLeibniz Universität Hannover (AEI) Tom BrownQueen Mary, University of London Ilka BrunnerEidgenössische Technische Hochschule (ETH), Zürich Erling BrynjolfssonUniversity of Iceland Dmitri BykovSteklov Institute, Moscow and Trinity College, Dublin Joan CampsUniversitat de Barcelona

  12. At-sea distribution of radio-marked Ashy Storm-Petrels Oceanodroma homochroa captured on the California Channel Islands

    USGS Publications Warehouse

    Adams, J.; Takekawa, J.Y.

    2008-01-01

    Small, rare and wide-ranging pelagic birds are difficult to locate and observe at sea; little is therefore known regarding individual movements and habitat affinities among many of the world's storm-petrels (Family Hydrobatidae). We re-located 57 of 70 radio-marked Ashy Storm-Petrels Oceanodroma homochroa captured at three colonies in the California Channel Islands: Scorpion Rocks (2004, 2005), Santa Barbara Island (2004) and Prince Island (2005). Between 23 July and 22 September 2004, and 5 July and 4 August 2005, we flew 29 telemetry surveys, covered more than 65 000 km2 (2004) and 43 000 km2 (2005) of open ocean from San Nicolas Island north to the Farallon Islands and obtained 215 locations from 57 storm-petrels at sea. In both years, radio-marked storm-petrels were aggregated over the continental slope from Point Conception to Point Buchon, within the western Santa Barbara Channel, and over the Santa Cruz Basin between Santa Cruz, San Nicolas and Santa Barbara islands. Individuals captured in the Channel Islands ranged more than 600 km and were located as far north as Gulf of the Farallones National Marine Sanctuary. This is the first study to use radiotelemetry to determine the at-sea distribution and movements for any storm-petrel species.

  13. Laser produced nanocavities in dielectrics

    NASA Astrophysics Data System (ADS)

    Hallo, Ludovic; Bourgeade, Antoine; Mezel, Candice; Tikhonchuk, Vladimir; Gamaly, Eugene

    2006-10-01

    Tight focusing of the laser pulses opens a possibility to modify the properties of transparent materials and create high-density memories and photonic crystals. It was demonstrated recently [1,2] a formation of sub-wavelength holes by focusing a 100 ns, 100 fs laser pulses inside samples of sapphir and glass. This paper presents the results of numerical simulations of the interaction of sub-ps laser pulses with transparent dielectrics. It contains two parts : a 2D model of the laser energy deposition, based on the solution of full Maxwell equations coupled to a ionisation model accounting for the multiphotonic and avalanche ionisation, and the 3-body recombination. The second part presents the 2D hydrodynamic simulations of the shock wave propagation and the cavity formation with initial conditions provided by 2D absorption model. It is shown that the cavity parameters are very sensitive to the properties of the EOS in the phase transition domain. [1] E.G. Gamaly, S. Juodkazis, K. Nishimura, H. Misawa, B. Luther-Davies, L. Hallo, Ph. Nicola"i, V. T. Tikhonchuk, Phys. Rev. B 73, 214101 (2006). [2] S. Juodkazis, K. Nishimura, S. Tanaka, H. Misawa, E.G. Gamaly, B. Luther-Davies, L. Hallo, Ph. Nicola"i, V. T. Tikhonchuk, Phys. Rev. Lett. 96, 166101 (2006).

  14. Application of the Global Positioning System to crustal deformation measurements. 3: Result from the southern California borderlands

    SciTech Connect

    Larson, K.M.

    1993-12-01

    Five years of measurements from the Global Positioning System (GPS) satellites collected between 1986 and 1991 are used to investigate deformation in the offshore regions of southern California. GPS provides the first practical technique to make precise geodetic measurements in the region. The geodetic network is situated along the California coastline from Vandenberg (120.6 deg W, 34.6 deg N) to San Diego, with additional sites on Santa Cruz, San Nicolas, Santa Catalina, Santa Rosa, and San Clemente Islands. The precision of horizontal interstation vectors is subcentimeter, and the interstation vector rate between Owens Valley Radio Observatory (OVRO) and Vandenberg agrees with the very long baseline interferometry derived rate to within one standard deviation. No significant motion is observed in th e western Santa Barbara Channel between Vandenberg and Santa Rosa Island, 0.5 +/- 1.6 mm/yr, where the quoted uncertainties are one standard deviation. Motions in the eastern Santa Barbara Channel are consistent with compressional deformation of 6 +/- 1 mm/yr at N16 +/- 3 deg E. This motion is in agreement with seismicity and an independent geodetic analysis for the period 1971-1987 (Larsen, 1991). San Clemente Island is moving relative to San Diego at the rate of 5.9 +/- 1.8/yr at a direction of N38 +/- 20 deg W. The motion between San Nicolas Island and San Clemente Island, 0.8 +/- 1.5 mm/yr, is insignificant.

  15. Investigation of geotechnical parameters from CSEM mapping and monitoring data at the oases Kharga and Baris of Sahara desert, Egypt

    NASA Astrophysics Data System (ADS)

    Hachay, Olga; Khachay, Oleg; Attia, Magdy; Khalil, Ahmed; Mekkawi, Mahmoud; Soliman, Mamdouh

    2016-04-01

    The site of investigation, oasis Kharga, is located at about 600 km south of Cairo, Egypt; Baris is about 90 km from Kharga also to south and towards more inside the desert. The work was aimed to investigate the rock mass stability at Baris and to estimate the water intake in the Oasis Kharga. A controlled source electromagnetic (CSEM) approach developed earlier by IGF UB RAS (Geophysical Federal Institute, Ural Branch of Russian Academy of Science) is applied to image the ranked deformation levels in the massive structure of the Baris. The wide profile system of observation has been used to monitor the three components of the alternating magnetic field along predefined measuring lines in the study area. Here we can show the first results that we shall continue during some cycles of monitoring. The second part of our work was linked with mapping the massif structure inside the oasis City, where only using our device we could construct the geoelectrical sections for 5 profiles and show the real structure of the water volume and its complicated structure up to 200 meters depth recording the values of real not apparent resistivity. The analytical treatments provided good information about the structure of the rock massive and its rank of degradation, the lateral distribution of the geotechnical heterogeneity, and finally a conclusive outcome about foundation stability. We can conclude that the general dynamic state close to the destruction level within the investigation areas is getting worse over the time; this is reflected in the crack's densities and positions, also on the changes in the lateral distribution of geoelectrical heterogeneity as an indicator of the saturation of the surface rock in the study area with water [1,2]. References 1. Magdy A. Atya, Olga A. Hachay, Mamdouh M. Soliman, Oleg Y. Khachay, Ahmed B. Khalill, Mahmoud Gaballah, Fathy F.Shaaban and Ibrahim A.El. Hemali. CSEM imaging of the near surface dynamics and its impact for foundation stability

  16. Investigation into the Role of Initial Conditions on Rayleigh-Taylor Instabilities by Low Atwood Experiments and Simulations

    SciTech Connect

    Mueschke, N; Andrews, M; Schilling, O

    2003-07-14

    dimensional simulations. (3) Quantify the dynamical quantities associated with the evolution equations of density, kinetic energy, and enstrophy. The Modeling Objectives are: (1) Perform a similar set of simulations using the artificial diffusion equations proposed by Oleg Schilling to validate their use. Results are to be compared to the experimental and DNS simulations. (2) Perform comparisons between DNS simulations of experiment and the proposed EZTurbMix models under development by Oleg Schilling.

  17. A new species of Bryoleuca Hampson, 1908 from Afghanistan (Lepidoptera, Noctuidae, Bryophilinae).

    PubMed

    Pekarsky, Oleg

    2015-11-13

    A new species of the raptricula species-group, Bryoleuca pljushtchi sp. n. is described. A diagnostic comparison is made with Bryoleuca raptricula ([Denis & Schiffermüller], 1775), Bryoleuca felina (Eversmann, 1852), Bryoleuca orthogramma (Boursin, 1954), Bryoleuca volodia An, Choi & Ronkay, 2013 and Bryoleuca nahnybidai Pekarsky, 2014. Adults and female genitalia of the new species and its closest relatives are illustrated. Modern taxonomic studies of the raptricula-group started by Fibiger et al. (2009) and got progress by the clarification of the taxonomic status of B. felina (Pekarsky & Ronkay 2010). Subsequently, further two newly recognised species were described in the last two years, B. volodia and B. nahnybidai. The first attempt to prepare the checklist of the subfamily was made by Hacker (1990) and, later, European check list was given in the Noctuidae Europaeae, Vol. 11 (Fibiger et al. 2009). As for the fauna of Afghanistan, Koçak and Kemal (2012) listed twelve Bryophilinae species one of which, B. raptricula, belongs to the genus Bryoleuca. The taxonomic situation of the raptricula species-complex is far not completely known yet. Present paper contains the description of a new Bryoleuca species from Afghanistan. The single female of this new species was collected by Ukrainian entomologists Igor Pljushtch and Oleg Pak in Central Afghanistan in 2013.

  18. Theoretical study of static magnetic properties for the chiral and reconstructed graphene nanoribbons

    NASA Astrophysics Data System (ADS)

    Park, Suk-Young; Rhim, Jun-Won; Moon, Kyungsun

    2013-03-01

    Recent theoretical study of the chiral graphene nanoribbons(CGNR) has demonstrated the magnetic ordering of the edge states below a certain chiral angle1. Based on the Hubbard model for the CGNR, we study the static properties of the magnetic edge states such as the intra-edge and inter-edge spin stiffness, which are the two crucial parameters to control the thermodynamics of the effective magnetic hamiltonian. For the systematic study of the anti-ferromagnetic inter-edge spin correlations, we calculate the inter-edge spin stiffness as a function of ribbon width and transverse electric field. We also attempt to calculate the electronic and magnetic properties for the other edge geometries such as a reconstructed edge geometry, which has been experimentally confirmed as an edge shape other than zigzag or armchair nanoribbon2 1. Oleg V. Yazyev, Rodrigo B. Capaz, and Steven G. Louie, Phys. Rev. B 84, 115406 (2011). 2. Pekka Koskinen, Sami Malola, and Hannu Hakkinen, Phys. Rev. B 80, 073401 (2009). This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education, Science and Technology(2012R1A1A2006927).

  19. Sirepo for Synchrotron Radiation Workshop

    SciTech Connect

    Nagler, Robert; Moeller, Paul; Rakitin, Maksim

    2016-10-25

    Sirepo is an open source framework for cloud computing. The graphical user interface (GUI) for Sirepo, also known as the client, executes in any HTML5 compliant web browser on any computing platform, including tablets. The client is built in JavaScript, making use of the following open source libraries: Bootstrap, which is fundamental for cross-platform web applications; AngularJS, which provides a model–view–controller (MVC) architecture and GUI components; and D3.js, which provides interactive plots and data-driven transformations. The Sirepo server is built on the following Python technologies: Flask, which is a lightweight framework for web development; Jinja, which is a secure and widely used templating language; and Werkzeug, a utility library that is compliant with the WSGI standard. We use Nginx as the HTTP server and proxy, which provides a scalable event-driven architecture. The physics codes supported by Sirepo execute inside a Docker container. One of the codes supported by Sirepo is the Synchrotron Radiation Workshop (SRW). SRW computes synchrotron radiation from relativistic electrons in arbitrary magnetic fields and propagates the radiation wavefronts through optical beamlines. SRW is open source and is primarily supported by Dr. Oleg Chubar of NSLS-II at Brookhaven National Laboratory.

  20. Spatially Resolving Spin-split Edge States of Chiral Graphene Nanoribbons

    NASA Astrophysics Data System (ADS)

    Crommie, M. F.

    2011-03-01

    A central question in the field of graphene-related research is how graphene behaves when it is patterned at the nanometer scale with different edge geometries. The most fundamental shape in this regard is the graphene nanoribbon (GNR), a narrow strip of graphene that is characterized by its width and chirality. GNRs have been predicted to exhibit a wide range of behavior that includes tunable energy gaps and unique 1D edge states with unusual magnetic structure. I will discuss a scanning tunneling microscopy and spectroscopy (STS) study of GNRs that allows us to examine how GNR electronic structure depends on the chirality of atomically well-defined GNR edges. Our STS measurements reveal the presence of 1D GNR edge states that closely match theoretical expectations for GNRs of similar width and chirality. We additionally observe width-dependent energy splitting in GNR edge states, providing compelling evidence of their magnetic nature. This work performed in collaboration with Chenggang Tao, Liying Jiao, Oleg V. Yazyev, Yen-Chia Chen, Juanjuan Feng, Xiaowei Zhang, Rodrigo B. Capaz, James M. Tour, Alex Zettl, Steven G. Louie, and Hongjie Dai.

  1. Liquid Crystal Based Sensor to Detect Beta-Sheet Formation of Peptides

    NASA Astrophysics Data System (ADS)

    Sadati, Monirosadat; Izmitli Apik, Aslin; Abbott, Nicholas L.; de Pablo, Juan J.

    2015-03-01

    Protein aggregation into amyloid fibrils is involved in the progression of Alzheimer's, typeII diabetes and Huntington's diseases. Although larger aggregates remain important for clinical determination, small oligomers are of great interest due to their potentially toxic nature. It is therefore crucial to develop methods that probe the aggregation process at early stages and in the vicinity of biological membranes. Here, we present a simple method that relies on liquid crystalline materials and a Langmuir monolayer at the aqueous-liquid crystal (LC) interface. The approach is based on the LC's specific response to β-sheet structures, which abound in amyloid fibrils. When the system is observed under polarized light, the fibrils formed by amyloidogenic peptides give rise to the formation of elongated and branched structures in the LCs. Moreover, the PolScope measurements prove that the LCs are predominantly aligned along the fibrils when exposed to a β-sheet forming peptide. In contrast, non-amyloidogenic peptides form ellipsoidal domains of irregularly tilted LCs. This method is capable of reporting aggregation at lipid-aqueous interfaces at nanomolar concentrations of the peptide, and much earlier than commonly used fluorescence-based techniques. We thank Prof. Oleg D. Levrentovich and Young-Ki Kim from the Liquid Crystal Institute of Kent State University for the use of their PolScope instrument. This work was partially supported by the Swiss National Science Foundation (P300P2_151342).

  2. Laboratory experiments for Titan's ionosphere : the chemistry of N2+, N+, and N2++ nitrogen ions

    NASA Astrophysics Data System (ADS)

    Thissen, R.; Alcaraz, C.; Dutuit, O.; Nicolas, C.; Soldi-Lose, H.; Zabka, J.; Franceschi, P.

    Laboratory experiments for Titan's ionosphere : the chemistry of N+ , N+ , and N2+ nitrogen ions 2 2 R. Thissen (1), C. Alcaraz (1), O. Dutuit (1), C. Nicolas (2), H. Soldi-Lose (3), J. Zabka (4), P. Franceschi (5) (1) LCP, Bât. 350, Centre Universitaire Paris-Sud, F-91405 Orsay Cedex, France, (2) Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin BP 48, 91192 Gif-sur-Yvette, France, (3) Institut für Chemie, Fachgruppe Organische Chemie, Technische Universität Berlin, Straße des 17. Juni 135, D-10623 Berlin, (4) J. Heyrovsky Institute of Physical Chemistry, Dolejskova 3, CZ 18223 Praha 8 - Kobylisy, Czech Republik, (5) Dept. of Physics, University of Trento, Via Sommarive 14, 38050 Povo (TN), Italy (christian.alcaraz@lcp.u-psud.fr) N2 is the major neutral componant of Titan's atmosphere, its ionisation by solar radiation and by magnetospheric electron impact is the most important production of ions in Titan's ionosphere. These primary processes not only lead to N+ molecular 2 monocations but also to N+ atomic ions and to N2+ molecular dications, which can 2 pertain some internal or translational excitation. This contribution will summarize our efforts to caracterize in gaz phase laboratory experiments the reactivity of the nitrogen ions with the most important neutral targets of the Titan's atmosphere [1-3]: • N+ + CH4 , C2 H2 , and C2 H6 2 • N+ (3 P, 1 D) + CH4 , and C2 H4 • N2+ + N2 , CH4 , and C2 H4 2 In this work, particular attention has been paid on the effect of internal and/or translational excitation of the primary nitrogen ions on the rate constant and branching ratio of these ion-molecule reactions. The results from these studies have been compared to the literature values when available and some significant differences have been found. These new values have been used as input data in 1D models of the Titan's ionosphere to show the effect on the final density profiles of the main ions [4] and to demonstrate the existence of a N2+2 dication

  3. Hydrates in the California Borderlands: 2D CSEM inversion results from towed and seafloor arrays

    NASA Astrophysics Data System (ADS)

    Kannberg, P. K.; Constable, S.; Key, K.

    2013-12-01

    Methane hydrate, an ice-like solid clathrate of methane and water, forms in shallow continental slope sediments, and is both a potential energy source and geologic hazard. Traditionally, methane hydrate presence is inferred from a seismically detected bathymetry tracking velocity inversion, known as the bottom-simulating reflector (BSR). However the BSR is an indicator of free gas at the base of the hydrate stability zone, and not an indicator of hydrate. As such, seismic methods are limited in their capacity to identify and quantify hydrate presence and concentration. Controlled source electromagnetic (CSEM) methods are sensitive to, and are able to directly detect, the presence of electrically resistive methane hydrate and free gas. Additionally, because shallow resistors can mimic deeper resistors in seafloor instruments, understanding the shallow sediment structure can inform deeper crustal modeling. We conducted two CSEM surveys in the San Nicolas Basin, located 150km west of San Diego where a BSR was identified from legacy seismics. Both surveys were conducted using a deep-towed EM transmitter followed by 4 towed 3-axis electric field receivers spaced every 200 m from 400-1000 m behind the transmitter. Either a half-hertz or quarter-hertz modified square wave was transmitted on a 200 ampere, 100 m dipole that was flown between 50 and 100m above the seafloor. The short transmitter-receiver offset allows resolution of shallow structure (less than 1km below seafloor), while the longer transmitter-seafloor receiver resolves deeper structure. Between the two surveys, 27 seafloor receivers were deployed and ~150km of lines were towed, including 5 transects of the basin coincident with legacy seismic lines, and a short-offset repeatability study. Initial 1D modeling showed the presence of a resistor coincident with the BSR. Further 2D inversions using the MARE2DEM inversion program were run for the towed array. These inversions show a 4 ohm-m resistor in the central

  4. On the use of Multisensor and multitemporal data for monitoring risk degradation and looting in archaeological site

    NASA Astrophysics Data System (ADS)

    Masini, Nicola; Lasaponara, Rosa

    2015-04-01

    Illegal excavations represent one of the main risks which affect the archaeological heritage all over the world. They cause a massive loss of artefacts but also, and above all, a loss of the cultural context, which makes the subsequent interpretation of archaeological remains very difficult. Remote sensing offers a suitable chance to quantify and analyse this phenomenon, especially in those countries, from Southern America to Middle East, where the surveillance on site is not much effective and time consuming or non practicable due to military or political restrictions. In this paper we focus on the use of GeoEye and Google Earth imagery to quantitatively assess looting in Ventarron (Lambayeque, Peru) that is one of most important archaeological sites in Southern America. Multitemporal satellite images acquired for the study area have been processed by using both autocorrelation statistics and unsupervised classification to highlight and extract looting patterns. The mapping of areas affected by looting offered the opportunity to investigate such areas not previously systematically documented. Reference Lasaponara R.; Giovanni Leucci; Nicola Masini; Raffaele Persico 2014 ": Investigating archaeological looting using very high resolution satellite images and georadar: the experience in Lambayeque in North Peru JASC13-61R1 Cigna Francesca, Deodato Tapete, Rosa Lasaponara and Nicola Masini, 2013 Amplitude Change Detection with ENVISAT ASAR to Image the Cultural Landscape of the Nasca Region, Peru (pages 117-131). Archeological Prospection Article first published online: 21 MAY 2013 | DOI: 10.1002/arp.1451 Tapete Deodato, Francesca Cigna, Nicola Masini and Rosa Lasaponara 2013. Prospection and Monitoring of the Archaeological Heritage of Nasca, Peru, with ENVISAT ASAR Archeological Prospection (pages 133-147) Article first published online: 21 MAY 2013 | DOI: 10.1002/arp.1449 Lasaponara Rosa 2013: Geospatial analysis from space: Advanced approaches for data processing

  5. List of Participants

    NASA Astrophysics Data System (ADS)

    Bombaci, I.; Covello, A.; Marcucci, L. E.; Rosati, S.

    2009-07-01

    Armani Paolo (Università di Trento) Benhar Omar (INFN Roma) Bombaci Ignazio (Università di Pisa) Bonanno Luca (Università di Ferrara) Catara Francesco (Università di Catania) Cò Giampaolo (Università di Lecce) Colonna Maria (Laboratori Nazionali del Sud, INFN Catania) Colonna Nicola (INFN Bari) Conti Francesco (Università di Pavia) Coraggio Luigi (INFN Napoli) Covello Aldo (Università di Napoli) Cristoforetti Marco (Technische Universität München, Germania) Cuofano Carmine (Università di Ferrara) Di Toro Massimo (Università di Catania) Drago Alessandro (Università di Ferrara) Faccioli Pietro (Università di Trento) Farina Nicola (INFN Roma) Finelli Paolo (Università di Bologna) Fiorentini Giovanni (Università di Ferrara) Fortunato Lorenzo (Università di Padova) Gambacurta Danilo (Università di Catania) Gandolfi Stefano (Università di Trento) Gargano Angela (INFN Napoli) Giannini Mauro (Università di Genova) Girlanda Luca (INFN Pisa) Giusti Carlotta (INFN Pavia) Illarionov Alexei (SISSA Trieste) Itaco Nunzio (Università di Napoli) Kievsky Alejandro (INFN Pisa) Lanza Edoardo (INFN Catania) Leidemann Winfried (Università di Trento) Lenzi Silvia (Università di Padova) Lipparini Enrico (Università di Trento) Lissia Marcello (Università di Cagliari) Lo Iudice Nicola (Università di Napoli) Maieron Chiara (Università di Lecce) Marcucci Laura Elisa (Università di Pisa) Matera Francesco (Università di Firenze) Millo Raffaele (Università di Trento) Orlandini Giuseppina (Università di Trento) Pacati Franco (Università di Pavia) Pastore Alessandro (Univeristy of Jyväskylä, Finlandia) Pederiva Francesco (Università di Trento) Pisent Gualtiero (Università di Padova) Prete Gianfranco (INFN Laboratori Nazionali di Legnaro) Quarati Piero (Politecnico di Torino) Rosati Sergio (Università di Pisa) Salmè Giovanni (INFN Roma) Santopinto Elena (INFN Genova) Traini Marco (Università di Trento) Vigezzi Enrico (INFN Milano) Vitturi Andrea (Universit

  6. A cool eastern Pacific Ocean at the close of the Last Interglacial complex

    USGS Publications Warehouse

    Muhs, D.R.; Simmons, K.R.; Kennedy, G.L.; Ludwig, K. R.; Groves, L.T.

    2006-01-01

    New high-precision thermal ionization mass-spectrometric (TIMS) U-series ages of solitary corals (Balanophyllia elegans) from several marine terrace localities along the California and southern Oregon coasts date to the ???80,000 yr BP high stand of sea, correlative with marine isotope substage 5a, late in the last interglacial complex. Ages of multiple corals from localities north of Point An??o Nuevo (central California) and San Nicolas Island (southern California) suggest that this high sea stand could have lasted at least 8000 yr, from ???84,000 to ???76,000 yr BP. These ages overlap with those from marine deposits on tectonically stable Bermuda and tectonically emergent Barbados. Higher-elevation terraces at two California localities, in the Palos Verdes Hills and on San Nicolas Island, have corals with ages that range mostly from ???121,000 to ???116,000 yr BP, correlative with marine isotope substage 5e. These ages are similar to those reported for other terraces in southern California but are younger than some ages reported from Hawaii, Barbados and the Bahamas. Marine terrace faunas are excellent proxies for nearshore marine paleotemperatures during past high sea stands. Terraces on the Palos Verdes Hills and San Nicolas Island dated to the ???120,000 yr BP high sea stand have dominantly zoogeographically "neutral" species in exposed coastal localities, indicating nearshore waters similar to those of today. In contrast, ???80,000 yr BP, exposed coastal localities typically have molluscan faunas characterized by numerous extralimital northern species and a lack of extralimital southern species. These fossil assemblages are indicative of nearshore water temperatures that were cooler than modern temperatures at ???80,000 yr BP. Waters at least as warm as today's at ???120,000 yr BP and cooler than present at ???80,000 yr BP are in excellent agreement with marine alkenone records and coastal vegetation records derived from pollen data, from both southern and

  7. Corrigendum to "Lichenometric dating: Science or pseudo-science?" [Quaternary Research 83 (2015) 1-12

    NASA Astrophysics Data System (ADS)

    Osborn, Gerald; McCarthy, Daniel; LaBrie, Aline; Burke, Randall

    2015-03-01

    In the section "Is there any evidence that lichenometry works?" in our paper we claim that Young et al. (2009) incorrectly transcribed a lichen growth curve from Solomina and Calkin (2003), when they used it in the Alaska Range. The error is actually ours, as we based that point of discussion on the Brooks Range curve from Solomina and Calkin (2003) rather than the central Alaska curve that Young et al. actually used. There was no erroneous transcription, and we apologize to Nicolas Young and his coauthors. The last sentence in the paragraph in question should read "We conclude that the correspondence of 10Be ages and lichenometric ages in this case is a stroke of lucky coincidence".

  8. Recollections of a translator (Russian title: Vstrecha v verhah ili vospominania perevodchika)

    NASA Astrophysics Data System (ADS)

    Gaina, Alex

    The article includes recollections of the author-translator from few meetings in Moscow during 70-th years of the XX-th century. The recollections includes a visit to Moscow of a Romanian delegation of trade-unions, a visit of Nicolae Ceausescu and Elena Ceausescu to Moscow in november 1977 in view of the 60-th years of the Revolution of October celebration. A visit by Nicu Ceausescu, physicist and the leader of the Union of Communist Youth of Romania, to Central Comitee of the All Union Communist Youth Organization of the USSR (Komsomol) in Moscow during a transit fly to Beijing (China) is reported also. The recollections reffers also the following persons: Andrey Gromyko- minister of the foreign office of the USSR, Geidar Aliev - 1-st secretary of the Central Commitee of the Azerbaijan S.S.R. Communist party, Grigor'ev- a secretary of the Soviet Komsomol (All Union Organization of Communist Youth) and other.

  9. A Logical Process Calculus

    NASA Technical Reports Server (NTRS)

    Cleaveland, Rance; Luettgen, Gerald; Bushnell, Dennis M. (Technical Monitor)

    2002-01-01

    This paper presents the Logical Process Calculus (LPC), a formalism that supports heterogeneous system specifications containing both operational and declarative subspecifications. Syntactically, LPC extends Milner's Calculus of Communicating Systems with operators from the alternation-free linear-time mu-calculus (LT(mu)). Semantically, LPC is equipped with a behavioral preorder that generalizes Hennessy's and DeNicola's must-testing preorder as well as LT(mu's) satisfaction relation, while being compositional for all LPC operators. From a technical point of view, the new calculus is distinguished by the inclusion of: (1) both minimal and maximal fixed-point operators and (2) an unimple-mentability predicate on process terms, which tags inconsistent specifications. The utility of LPC is demonstrated by means of an example highlighting the benefits of heterogeneous system specification.

  10. The Surprising History of Claims for Life on the Sun

    NASA Astrophysics Data System (ADS)

    Crowe, Michael J.

    2011-11-01

    Because astronomers are now convinced that it is impossible for life, especially intelligent life, to exist on the Sun and stars, it might be assumed that astronomers have always held this view. This paper shows that throughout most of the history of astronomy, some intellectuals, including a number of well-known astronomers, have advocated the existence of intelligent life on our Sun and thereby on stars. Among the more prominent figures discussed are Nicolas of Cusa, Giordano Bruno, William Whiston, Johann Bode, Roger Boscovich, William Herschel, Auguste Comte, Carl Gauss, Thomas Dick, John Herschel, and François Arago. One point in preparing this paper is to show differences between the astronomy of the past and that of the present.

  11. Sylvester II Bukowiec Observatory: a "piece de theatre" for the inauguration day

    NASA Astrophysics Data System (ADS)

    Maksym, P. M.

    The 21st of May 2010 has been the day of inauguration of the Astronomical Observatory of Bukowiec "Pope Sylvester II". This observatory, a fixed station of the European network of asteroidal and lunar occultations for high resolution astrometry, is built in the territory of the school dedicated to Nicolas Copernicus, the most famous polish astronomer. This new observatory starts its activity in the international year of astronomy, which celebrates the 400th anniversary of the astronomical use of the telescope by Galileo Galilei. The polish astronomer Bohdan Paczy?ski is the fourth protagonist of the pièce théatrale written for the day of inauguration. Here is reported the text of this pièce, which was a powerful way to introduce people to the knowledge of Sylvester II, great scholar and teacher of the 10th century, who founded the first diocesis in Poland when he was Pope.

  12. Inactivation of Escherichia coli on PTFE surfaces by diffuse coplanar surface barrier discharge

    NASA Astrophysics Data System (ADS)

    Tučeková, Zlata; Koval'ová, Zuzana; Zahoranová, Anna; Machala, Zdenko; Černák, Mirko

    2016-08-01

    The non-equilibrium plasma of diffuse coplanar surface barrier discharge (DCSBD) was tested for decontamination of bacteria Escherichia coli on polymer surfaces. We investigated the optical parameters of DCSBD plasma generated in synthetic air with different relative humidity. Our study was provided to estimate the main plasma components active during the DCSBD plasma degradation of E. coli contamination prepared on polytetrafluoroethylene (PTFE, Teflon) surface, in ambient air at atmospheric pressure. The DCSBD plasma was characterized by means of electrical measurements and optical emission spectroscopy. The inactivation of E. coli bacteria was evaluated by standard microbiological cultivation (CFU plate counting). The experimental results of the germicidal efficiency obtained for short plasma exposure times proved the effectiveness of DCSBD plasma for the polymer surface decontamination. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  13. Porphyry of Russian Empires in Paris

    NASA Astrophysics Data System (ADS)

    Bulakh, Andrey

    2014-05-01

    Porphyry of Russian Empires in Paris A. G. Bulakh (St Petersburg State University, Russia) So called "Schokhan porphyry" from Lake Onega, Russia, belongs surely to stones of World cultural heritage. One can see this "porphyry" at facades of a lovely palace of Pavel I and in pedestal of the monument after Nicolas I in St Petersburg. There are many other cases of using this stone in Russia. In Paris, sarcophagus of Napoleon I Bonaparte is constructed of blocks of this stone. Really, it is Proterozoic quartzite. Geology situation, petrography and mineralogical characteristic will be reported too. Comparison with antique porphyre from the Egyptian Province of the Roma Empire is given. References: 1) A.G.Bulakh, N.B.Abakumova, J.V.Romanovsky. St Petersburg: a History in Stone. 2010. Print House of St Petersburg State University. 173 p.

  14. Biographies of Romanian Physicists. Vol. 1. Outstanding Romanian Physicists

    NASA Astrophysics Data System (ADS)

    Ionescu-Pallas, Nicolae

    1998-01-01

    Biographies and the most important works of the following physiscists are written: Bacaloglu Emanuel (1830-1891), Farkas Gyula (1847-1930), Hepites Stefan (1851-1922), Negreanu Dimitrie (1858-1908), Bungeteanu Dimitrie (1860-1932), Miculescu Constantin (1863-1937), Hurmuzescu Dragomir (1865-1954), Donici Nicolae (1874-1956), Maior Augustin (1882-1963), Oteteleseanu Enric (1885 - 1948), Demetrescu Gheorghe (1885 - 19690, Badarau Eugen (1997-1975), Procopiu Stefan (1890-1972), Athanasiu Gheorghe (1893-1972), Marian Victor (1896-1971), Huluibei Horia (1896-1972), Proca Alexandru (1897-1955), Vencov Stefan (1899-1955), Ionescu Theodor (1899-1988), Ionescu Aurel (1902-1954), Manu Gheorghe I. (1903-1954), Herovanu Mircea (1904-1960), Agarbiceanu Ion (1907 - 1971), Titeica Serban (1908-1985), Auslander Iosif (1911-1978), Ciorascu Florin (1914-1977).

  15. PREFACE: Conference Committee

    NASA Astrophysics Data System (ADS)

    2016-02-01

    ORGANISING COMMITTEE: Alexander Petrov - Chairman, Kiril Blagoev - Vice-Chairman, Margarita Grozeva - Scientific secretary, Kostadinka Gesheva, Anna Szekeres, Hassan Chamati, Diana Nesheva, Peter Rafailov, Yordan Marinov, Emilia Dimova, Tatyana Ivanova, Radostina Kamburova, Ekaterina Iordanova, Julia Genova, Alexander Donkov, Emilia Vlaikova SCIENTIFIC COMMITTEE: Alexander Petrov, Bulgaria; Nikola Sabotinov, Bulgaria; Kiril Blagoev, Bulgaria; Nicholay Tonchev, Bulgaria; Hassan Chamati, Bulgaria; Marin Gospodinov, Bulgaria; Peter Rafailov, Bulgaria; Emil Vlakhov, Bulgaria; Kostadinka Gesheva, Bulgaria; Anna Szekeres, Bulgaria; Diana Nesheva, Bulgaria; Albena Paskaleva, Bulgaria; Tatyana Ivanova, Bulgaria; Alexander Dreischuh, Bulgaria; Evgenia Valcheva, Bulgaria; Miglena Nikolaeva-Dimitrova, Bulgaria; Sanka Gateva, Bulgaria; Frank Hamelmann, Germany; Nicola Scaramuzza, Italy; G.M.W. Kroesen, Netherlands; Jan van Dijk Netherlands; Andrzej Szewczyk, Poland; Henryk Szymczak, Poland; Krzistof Rogacki, Poland; Ion Mihailescu, Romania; Claes-Goran Granqvist, Sweden; Mikael Jonsson, Sweden; Andrew Livingston, UK; Ludmila Peeva, UK

  16. Hearing Science in Mid-Eighteenth-Century Britain and France

    PubMed Central

    Gouk, Penelope; Sykes, Ingrid

    2011-01-01

    Benjamin Martin, the English natural philosopher, and Claude-Nicolas Le Cat, the French surgeon, both published important work on auditory physiology and function in the mid-eighteenth century. Despite their different backgrounds, there was consensus between the two scholars on key principles of hearing research, most notably the importance of the inner ear in relation to auditory perception. Martin's work (1755 [1763?]) drew directly on the surgical work of Le Cat (1741) to demonstrate the importance of the auditory mechanism in listening processes. Le Cat's interest in the ear, however, came in turn from his interest in surgical anatomy. Martin used Le Cat's elegant designs as a tool for the vivid communication of auditory function to a popular, fee-paying audience. The meeting of two very different minds through intellectual agreement and material transfer demonstrates the way in which principles of hearing science were established in the Enlightenment period. PMID:20634220

  17. Fast 3D Focusing Inversion of Gravity Data Using Reweighted Regularized Lanczos Bidiagonalization Method

    NASA Astrophysics Data System (ADS)

    Rezaie, Mohammad; Moradzadeh, Ali; Kalate, Ali Nejati; Aghajani, Hamid

    2017-01-01

    Inversion of gravity data is one of the important steps in the interpretation of practical data. One of the most interesting geological frameworks for gravity data inversion is the detection of sharp boundaries between orebody and host rocks. The focusing inversion is able to reconstruct a sharp image of the geological target. This technique can be efficiently applied for the quantitative interpretation of gravity data. In this study, a new reweighted regularized method for the 3D focusing inversion technique based on Lanczos bidiagonalization method is developed. The inversion results of synthetic data show that the new method is faster than common reweighted regularized conjugate gradient method to produce an acceptable solution for focusing inverse problem. The new developed inversion scheme is also applied for inversion of the gravity data collected over the San Nicolas Cu-Zn orebody in Zacatecas State, Mexico. The inversion results indicate a remarkable correlation with the true structure of the orebody that is achieved from drilling data.

  18. Blast furnace supervision and control system

    SciTech Connect

    Remorino, M.; Lingiardi, O.; Zecchi, M.

    1997-12-31

    On December 1992, a group of companies headed by Techint, took over Somisa, the state-owned integrated steel plant located at San Nicolas, Province of Buenos Aires, Argentina, culminating an ambitious government privatization scheme. The blast furnace 2 went into a full reconstruction and relining in January 1995. After a 140 MU$ investment the new blast furnace 2 was started in September 1995. After more than one year of operation of the blast furnace the system has proven itself useful and reliable. The main reasons for the success of the system are: same use interface for all blast furnace areas -- operation, process, maintenance and management, (full horizontal and vertical integration); and full accessibility to all information and process tools though some restrictions apply to field commands (people empowerment). The paper describes the central system.

  19. The impact of in vitro digestion on bioaccessibility of polyphenols from potatoes and sweet potatoes and their influence on iron absorption by human intestinal cells.

    PubMed

    Miranda, Lisa; Deußer, Hannah; Evers, Danièle

    2013-11-01

    The composition of potatoes as determined by chemical extraction has been described extensively. It is thus quite well known that, among other compounds, potato is rich in polyphenols, vitamins and in some minerals. This paper underlines the important role of simulated gastro-intestinal in vitro digestion in the bioaccessibility of polyphenols (chlorogenic acid and derivatives, and rutin) from potatoes and sweet potatoes and their impact on iron uptake. Concentrations of polyphenols in the flesh of two potato cultivars (Nicola, white potato, and Vitelotte, purple potato) and sweet potato were measured by Ultra Performance Liquid Chromatography after boiling and after in vitro digestion. Chemical extraction underestimates polyphenol amounts that can be released during digestion and that are actually bioaccessible. Iron uptake, as evaluated by a ferritin assay, by intestinal human cells was decreased after incubation with the intestinal phase of in vitro digestion, presumably due to the presence of polyphenols.

  20. DC diaphragm discharge in water solutions of selected organic acids

    NASA Astrophysics Data System (ADS)

    Vyhnankova, Edita J.; Hammer, Malte U.; Reuter, Stephan; Krcma, Frantisek

    2015-07-01

    Effect of four simple organic acids water solution on a DC diaphragm discharge was studied. Efficiency of the discharge was quantified by the hydrogen peroxide production determined by UV-VIS spectrometry of a H2O2 complex formed with specific titanium reagent. Automatic titration was used to study the pH behaviour after the plasma treatment. Optical emission spectroscopy overview spectra were recorded and detailed spectra of OH band and Hβ line were used to calculate the rotational temperature and comparison of the line profile (reflecting electron concentration) in the acid solutions. Contribution to the topical issue "The 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV)", edited by Nicolas Gherardi, Ronny Brandenburg and Lars Stollenwark

  1. Radiometric observations at 20.6, 31.65, and 90.0 GHz: Continuing studies

    NASA Technical Reports Server (NTRS)

    Westwater, Ed R.; Falls, Michael J.; Fionda, Ermanno

    1989-01-01

    Ground based radiometer measurements at 20.6, 31.65, and 90.0 GHz were analyzed to provide attenuation statistics, thus extending the data base of previous NAPEX studies. Using data from colocated radiosondes, comparisons of measurements and calculations of brightness temperatures are presented. The oxygen absorption model of Rosenkranz and the water vapor absorption models of Liebe and of Waters are used. Data from July 1987 at San Nicolas Island, California and from December 1987, August and November 1988 at Denver, Colorado, are included. Joint attenuation statistics at 20.6 and 31.65 GHz are presented for two locations of the Colorado Research Network for December 1987 and August 1988.

  2. The Making of the Fathers of Astronomy Exhibit

    NASA Astrophysics Data System (ADS)

    Graney, C. M.

    2010-10-01

    The International Year of Astronomy 2009 stretched a few days into 2010 here in Louisville, Kentucky - the Fathers of Astronomy exhibit at the Frazier International History Museum did not close until 3 January 2010. Fathers of Astronomy, which was open for five months, told the story of Galileo through authentic original editions of three books - the 1493 Nuremberg Chronicle, Nicolas Copernicus's 1543 On the Revolutions of Heavenly Spheres, and Galileo Galilei's 1632 Dialogue Concerning the two Chief World Systems. The success of "Fathers" resulted from three very different partners coming together and combining resources to produce a history-themed IYA2009 programme of the highest quality at minimal cost. Lessons learned from the exhibit may be of value to people interested in communicating astronomy to the public.

  3. [Neurocience in the Junta para Ampliación de Estudios].

    PubMed

    Díaz, Alfredo Baratas

    2007-01-01

    The development of the Neurociencias in the Spain at the first third of the 20th century had a strong histological and pathological component. The work of Santiago Ramon and Cajal and Luis Simarro was continued by some excellent disciples: Nicolas Achúcarro, Gonzalo Rodriguez Lafora, Fernando de Castro, etc. Some of them had to make compatible diverse occupations, even the professional exercise of psychiatry, before obtaining a modest - but stable - position of investigation. In spite of some misalignments in the institutional development of the centers and the personal biographical ups and downs, the Junta para Ampliación de Estudios was the great institution that fomented the international formation of the investigators and equipped to them with the means to develop its work.

  4. The characterization of canvas painting by the Serbian artist Milo Milunović using X-ray fluorescence, micro-Raman and FTIR spectroscopy

    NASA Astrophysics Data System (ADS)

    Damjanović, Lj.; Gajić-Kvaščev, M.; Đurđević, J.; Andrić, V.; Marić-Stojanović, M.; Lazić, T.; Nikolić, S.

    2015-10-01

    A canvas painting by Milo Milunović "The Inspiration of the poet" was studied by energy dispersive X-Ray fluorescence (EDXRF), micro-Raman and Fourier transform infrared (FTIR) spectroscopy in order to identify materials used by the artist and his painting technique. Study is perfomed combining in situ non-destructive method with the preparation and study of cross-section samples and raw fragments of the samples. Milo Milunović, an eminent painter from Balkan region, made a copy of the Nicolas Poussin's original painting in Louvre in 1926/27. Obtained results revealed following pigments on the investigated canvas painting: vermilion, minium, cobalt blue, ultramarine, lead white, zinc white, cadmium yellow, chrome-based green pigment and several earth pigments - red and yellow ocher, green earth and umber. Ground layer was made of lead white mixed with calcium carbonate.

  5. Update on the frequency of Ile1016 mutation in voltage-gated sodium channel gene of Aedes aegypti in Mexico.

    PubMed

    Siller, Quetzaly; Ponce, Gustavo; Lozano, Saul; Flores, Adriana E

    2011-12-01

    We analyzed 790 Aedes aegypti from 14 localities of Mexico in 2009 to update information on the frequency of the Ile1016 allele in the voltage-gated sodium channel gene that confers resistance to pyrethroids and DDT. The Ile1016 mutation was present in all 17 collections, and was close to fixation in Acapulco (frequency = 0.97), Iguala (0.93), and San Nicolas (0.90). Genotypes at the 1016 locus were not in Hardy-Weinberg proportions in collections from Panuco, Veracruz, Cosoleacaque, Coatzacoalcos, Tantoyuca, and Monterrey due in every case to an excess of homozygotes. The high frequencies of this mutation in Ae. aegypti are probably due to selection pressure from pyrethroid insecticides, particularly permethrin, which has been used in mosquito control programs for >10 years in Mexico.

  6. Alkaloid decomposition by DC pin-hole discharge in water solution

    NASA Astrophysics Data System (ADS)

    Klimova, Edita J.; Krcma, Frantisek; Jonisova, Lenka

    2016-08-01

    DC diaphragm discharge generated in a batch reactor was used to decompose two selected model alkaloids, caffeine and quinine in concentrations ranging from 10 to 50 ppm or 5 to 15 ppm, respectively. UV-vis spectrometry was utilized in evaluation of H2O2 production during the process as well as degradation of caffeine. Fluorescence spectrometry was used for quantification of quinine. High rates of decomposition were reached in both cases in the anode part of the reactor. On the other hand, up to four times lower decomposition was observed in the cathode part. Total removal efficiency gained up to 300 mg/kWh for caffeine and 210 mg/kWh for quinine. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  7. [The representation of Italian psychiatry in Italian Treccani Encyclopedia in 1930's].

    PubMed

    Piazzi, Andrea; Piazzi, Gioia; Testa, Luana; Coccanari dè Fornari, Maria Antonietta

    2013-01-01

    The article reconstruct the situation of Italian psychiatry around 1930, using as unusual sources the pages of the Enciclopedia Italiana di Scienze, Lettere e Arti. This important work, conceived in 1925 and finished in 1937, is due - as well known - to the strong interest of Giovanni Gentile and to his capacity to involve in the project a great part of Italian intellectual world, without any ideological preclusion. The section devoted to Medical Sciences, including Psychiatry, was directed by Nicola Pende (1880-1970) and Giacinto Viola (1870-1943). A prevalent positivistic approach to science is well testified by their specific attention to preventive and social medicine, researches in Genetics and in biotypological constitutions. Psycopathological and psycological lemmas are very limited, underlying the medical disinterest towards contemporary philosophy and psycology.

  8. Blindness and the age of enlightenment: Diderot's letter on the blind.

    PubMed

    Margo, Curtis E; Harman, Lynn E; Smith, Don B

    2013-01-01

    Several months after anonymously publishing an essay in 1749 with the title "Letter on the Blind for the Use of Those Who Can See," the chief editor of the French Encyclopédie was arrested and taken to the prison fortress of Vincennes just east of Paris, France. The correctly assumed author, Denis Diderot, was 35 years old and had not yet left his imprint on the Age of Enlightenment. His letter, which recounted the life of Nicolas Saunderson, a blind mathematician, was intended to advance secular empiricism and disparage the religiously tinged rationalism put forward by Rene Descartes. The letter's discussion of sensory perception in men born blind dismissed the supposed primacy of visual imagery in abstract thinking. The essay did little to resolve any philosophical controversy, but it marked a turning point in Western attitudes toward visual disability.

  9. Role of inertia in the rheology of amorphous systems: A finite-element-based elastoplastic model.

    PubMed

    Karimi, Kamran; Barrat, Jean-Louis

    2016-02-01

    A simple finite-element analysis with varying damping strength is used to model the athermal shear rheology of densely packed glassy systems at a continuum level. We focus on the influence of dissipation on bulk rheological properties. Our numerical studies, done over a wide range of damping coefficients, identify two well-separated rheological regimes along with a crossover region controlled by a critical damping. In the overdamped limit, inertial effects are negligible and the rheological response is well described by the commonly observed Herschel-Bulkley equation. In stark contrast, inertial vibrations in the underdamped regime prompt a significant drop in the mean-stress level, leading to a nonmonotonic constitutive relation. The observed negative slope in the flow curve, which is a signature of mechanical instability and thus permanent shear banding, arises from the sole influence of inertia, in qualitative agreement with the recent molecular dynamics study of Nicolas et al., Phys. Rev. Lett. 116, 058303 (2016).

  10. Reinraumtechnik für die Medizintechnik

    NASA Astrophysics Data System (ADS)

    Petek, Max; Jungbluth, Martin; Krampe, Erhard

    Die Reinraumtechnik ist heute ein unverzichtbarer Bestandteil bei der Fertigung von Produkten der Life Sciences, den Bereichen Pharma, Lebensmittel, Kosmetik und Medizintechnik. In Anbetracht der langen Historie der Medizintechnik ist sie jedoch eine sehr junge Disziplin. Die Bedeutung von Keimen und die richtige Einschätzung ihrer Größe wurden zwar sehr früh bereits durch Paracelsus erkannt, jedoch wurden daraus noch keine speziellen oder kontinuierlich umgesetzten Hygienevorschriften abgeleitet. Die erste bekannte technische Umsetzung von Hygieneempfehlungen geht auf den Franzosen François Nicolas Appert zurück, der eine aseptische Abfüllmethode für Lebensmittel entwickelte und diese 1810 veröffentlichte [1]. Die erste dokumentierte medizinische Umsetzung stellten Hygienevorschriften für Ärzte dar, die Ignaz Philipp Semmelweis nach 1847 in der Wiener Klinik für Geburtshilfe einführte [2].

  11. Volume-surface barrier discharge in dried air in three-electrode system fed by impulse high voltage with nanosecond rise time

    NASA Astrophysics Data System (ADS)

    Malashin, Maxim; Rebrov, Igor; Nebogatkin, Sergey; Sokolova, Marina; Nikitin, Alexey; Voevodin, Vadim; Krivov, Sergey

    2016-08-01

    Results of experimental investigation of a volume-surface barrier discharge in a three-electrode system under periodic impulse voltage applied to the surface discharge (SD) electrodes and a d.c. potential applied to an additional third electrode are presented. It is shown that there is a strong influence of polarity and amplitude of the d.c. potential on the direct current "extracted" out of the surface discharge plasma layer by electric field of the third electrode. The amount of charged positive species that constitute the "extracted" current prevails under positive impulse voltage for low values of the negative d.c. potential of the third electrode. The amount of negative species prevails with higher values of the positive d.c. positive of the third electrode. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  12. The fate of nitrate in riparian wetlands: results from a pan-European study

    NASA Astrophysics Data System (ADS)

    Burt, T.; Pinay, G.

    2001-12-01

    Subsurface flow through the soil and deeper sediments of the riparian zone is known to be of crucial importance to denitrification and other nitrogen cycling processes. Since denitrification potential generally increases towards the soil surface, water table elevation can control the degree to which nitrate reduction is optimised. This paper presents data collected as part of a pan-European study of nitrate buffer zones, the NICOLAS project (Nitrogen Control by Landscape Structures in Agricultural Environments). An identical experimental design was employed at each site, allowing climatic controls on hydrology and nitrogen cycling processes to be explored. Nitrate elimination occurred at most of the 13 study sites spread out within Europe (between latitude 40\\deg and 55\\deg N) with an efficiency ranging from 5 to 30% of N concentration abatement per metre. This elimination usually occurred within the first few tens of metres at the upland-wetland interface depending on local geomorphological and hydrological conditions.

  13. IT disaster recovery: are you prepared?

    PubMed

    Donley, Elizabeth

    2007-10-01

    New Web technologies provide new opportunities but also include new risks. In an article in the May 2003 edition of Harvard Business Review, Editor Nicolas G. Carr said, "executives need to shift their attention from IT opportunities to IT risks-from offense to defense." That's probably a bit extreme. A better approach is to look at IT the same way you look at any business proposition. Every decision should be an informed decision. You should weigh the opportunities against the risks in order to select the best option. Then, once you have made your decision, take the necessary steps to minimize and prepare for the risks. This includes preparing for whatever disaster may come your way.

  14. Effects of Age, Colony, and Sex on Mercury Concentrations in California Sea Lions.

    PubMed

    McHuron, Elizabeth A; Peterson, Sarah H; Ackerman, Joshua T; Melin, Sharon R; Harris, Jeffrey D; Costa, Daniel P

    2016-01-01

    We measured total mercury (THg) concentrations in California sea lions (Zalophus californianus) and examined how concentrations varied with age class, colony, and sex. Because Hg exposure is primarily via diet, we used nitrogen (δ (15)N) and carbon (δ (13)C) stable isotopes to determine if intraspecific differences in THg concentrations could be explained by feeding ecology. Blood and hair were collected from 21 adult females and 57 juveniles from three colonies in central and southern California (San Nicolas, San Miguel, and Año Nuevo Islands). Total Hg concentrations ranged from 0.01 to 0.31 μg g(-1) wet weight (ww) in blood and 0.74 to 21.00 μg g(-1) dry weight (dw) in hair. Adult females had greater mean THg concentrations than juveniles in blood (0.15 vs. 0.03 μg(-1) ww) and hair (10.10 vs. 3.25 μg(-1) dw). Age class differences in THg concentrations did not appear to be driven by trophic level or habitat type because there were no differences in δ (15)N or δ (13)C values between adults and juveniles. Total Hg concentrations in adult females were 54 % (blood) and 24 % (hair) greater in females from San Miguel than females from San Nicolas Island, which may have been because sea lions from the two islands foraged in different areas. For juveniles, we detected some differences in THg concentrations with colony and sex, although these were likely due to sampling effects and not ecological differences. Overall, THg concentrations in California sea lions were within the range documented for other marine mammals and were generally below toxicity benchmarks for fish-eating wildlife.

  15. Effects of age, colony, and sex on mercury concentrations in California sea lions

    USGS Publications Warehouse

    McHuron, Elizibeth A; Peterson, Sarah H.; Ackerman, Josh; Melin, Sharon R.; Harris, Jeffrey D.; Costa, Daniel P.

    2016-01-01

    We measured total mercury (THg) concentrations in California sea lions (Zalophus californianus) and examined how concentrations varied with age class, colony, and sex. Because Hg exposure is primarily via diet, we used nitrogen (δ 15N) and carbon (δ 13C) stable isotopes to determine if intraspecific differences in THg concentrations could be explained by feeding ecology. Blood and hair were collected from 21 adult females and 57 juveniles from three colonies in central and southern California (San Nicolas, San Miguel, and Año Nuevo Islands). Total Hg concentrations ranged from 0.01 to 0.31 μg g−1 wet weight (ww) in blood and 0.74 to 21.00 μg g−1 dry weight (dw) in hair. Adult females had greater mean THg concentrations than juveniles in blood (0.15 vs. 0.03 μg−1 ww) and hair (10.10 vs. 3.25 μg−1 dw). Age class differences in THg concentrations did not appear to be driven by trophic level or habitat type because there were no differences in δ 15N or δ 13C values between adults and juveniles. Total Hg concentrations in adult females were 54 % (blood) and 24 % (hair) greater in females from San Miguel than females from San Nicolas Island, which may have been because sea lions from the two islands foraged in different areas. For juveniles, we detected some differences in THg concentrations with colony and sex, although these were likely due to sampling effects and not ecological differences. Overall, THg concentrations in California sea lions were within the range documented for other marine mammals and were generally below toxicity benchmarks for fish-eating wildlife.

  16. Upper crustal structure and Neogene tectonic development of the California continental borderland

    USGS Publications Warehouse

    Bohannon, R.G.; Geist, E.

    1998-01-01

    Multichannel seismic-reflection data, sonobuoy seismic-refraction data, and regional geology are used to define the upper crustal structure of the southern California continental borderland and to delineate the characteristics of the main lithotectonic belts of the region. The Catalina Schist belt is separated on its west side from the gently deformed Nicolas forearc belt by faults that have steep west dips and pronounced normal separations. On its east side the schist belt is bounded by alarge detachment fault that dips gently to the east beneath the west edge of the Peninsular Ranges belt at the coastline near Oceanside. The Catalina Schist was uplifted from middle crustal depths and exposed during a major event of extensional tectonism that started in early Miocene time in conjunction with about 10?? of clockwise rotation of the western Transverse Ranges belt. Part of the uplift of the Catalina Schist could have occurred on the detachment fault, but it is through to have mostly occurred on the steep faults that bound the west edge of the schist belt. A large amount of uplift is required, and it probably involved strong footwall flexural deformation in the wake of the translating and rotating western Transverse Ranges and Nicolas forearc belts. Extension, accompanied by probable large amounts of right slip, continued in the borederland region during and after middle Miocene time. The later stage of extension was accompanied by rapid clockwise rotation of the western Transverse Ranges of at least 90??. Most of the borderland, including the belt of schist that was uplifted in early Miocene time, was further deformed into numerous basins and ridges during this stage of oblique extension. The primary driving force for the deformation is thought to have been derived from the rapid northwest motion of the Pacific plate after it had become coupled to the Farallon plate system, which had previously been subducted beneath the borderland.

  17. Tracking the origins and diet of an endemic island canid (Urocyon littoralis) across 7300 years of human cultural and environmental change

    NASA Astrophysics Data System (ADS)

    Hofman, Courtney A.; Rick, Torben C.; Maldonado, Jesús E.; Collins, Paul W.; Erlandson, Jon M.; Fleischer, Robert C.; Smith, Chelsea; Sillett, T. Scott; Ralls, Katherine; Teeter, Wendy; Vellanoweth, René L.; Newsome, Seth D.

    2016-08-01

    Understanding how human activities have influenced the foraging ecology of wildlife is important as our planet faces ongoing and impending habitat and climatic change. We review the canine surrogacy approach (CSA)-a tool for comparing human, dog, and other canid diets in the past-and apply CSA to investigate possible ancient human resource provisioning in an endangered canid, the California Channel Islands fox (Urocyon littoralis). We conducted stable isotope analysis of bone collagen samples from ancient and modern island foxes (n = 214) and mainland gray foxes (Urocyon cinereoargenteus, n = 24). We compare these data to isotope values of ancient humans and dogs, and synthesize 29 Accelerator Mass Spectrometry (AMS) radiocarbon dates that fine-tune the chronology of island foxes. AMS dates confirm that island foxes likely arrived during the early Holocene (>7300 cal BP) on the northern islands in the archipelago and during the middle Holocene (>5500 cal BP) on the southern islands. We found no evidence that island foxes were consistently using anthropogenic resources (e.g., food obtained by scavenging around human habitation sites or direct provisioning by Native Americans), except for a few individuals on San Nicolas Island and possibly on San Clemente and Santa Rosa islands. Decreases in U. littoralis carbon and nitrogen isotope values between prehistoric times and the 19th century on San Nicolas Island suggest that changes in human land use from Native American hunter-gatherer occupations to historical ranching had a strong influence on fox diet. Island foxes exhibit considerable dietary variation through time and between islands and have adapted to a wide variety of climatic and cultural changes over the last 7300 years. This generalist foraging strategy suggests that endemic island foxes may be resilient to future changes in resource availability.

  18. Annual California Sea Otter Census - 2016 spring census summary

    USGS Publications Warehouse

    Tinker, M. Tim; Hatfield, Brian

    2016-01-01

    The spring 2016 mainland sea otter count began on 1 May and was completed on 11 May. Overall viewing conditions this year were very good, being more favorable than those during the 2015 spring census (3.1 vs. 2.6, where 0=poor, 1=fair, 2=good, 3=very good, and 4=excellent) and contributed to the relatively short duration of the count. The surface canopies of kelp (Macrocystis sp.) were considered by most participants to be below normal for this time of year in the northern half of the range and about normal in the southern half. Sea otters along the mainland were surveyed (using a combination of ground-based and aerial-based surveys) from Pillar Point in San Mateo County in the north, to Rincon Point in the south at the Santa Barbara/Ventura County line. A separate ground-based survey of the sea otter population at San Nicolas Island was completed earlier (April 15-April 18). Surface kelp canopies at the time of survey at San Nicolas Island were estimated to be below normal near shore off the western end of the island and about normal elsewhere.  Survey viewing conditions were very good (View Score = 3.0).These data support the following data series release: Tinker, M.T., and Hatfield, B.B., 2016, California sea otter (Enhydra lutris nereis) census results, spring 2016: U.S. Geological Survey Data Series 1018, 10 p., http://dx.doi.org/10.3133/ds1018.

  19. Development of Hydrophone and Its Aapplications Use in OBS

    NASA Astrophysics Data System (ADS)

    Lin, C. R.; Kuo, B. Y.; Wang, C. C.; Chang, H. K.; Jang, J. P.

    2014-12-01

    The seismic wave is translated to T-wave when earthquakes occur below seafloor with a traveling speed of 1500 m/s in the SOFAR channel which centers roughly at 1000 m water depths (Tolstoy and Ewing, 1950). Many studies have shown that hydrophone can be set up in the SOFAR channel to collect acoustic data to investigate plate movement (Fox and Dziak, 1999), seismisity (Fox et.al, 2001), characteristic of T-wave (Park et.al, 2001), seafloor volcanism (Nicolas, 1989), among others. Institute of Earth Sciences of Academia Sinica has been collaborating with Taiwan Ocean Research Institute (TORI) and the Institute of Undersea Technology (IUT) of the National Sun Yat-sen University (NSYSU) to succefully build a new wide-band OBS (Yardbird). We hope that Yardbird is not only an OBS but also a multi-function underwater recording plotform. Therefor we are developing a low-power consumption, inexpensive hydrophone to catch acoustic signals. The protoypte of it has passed a series of tests and got some seismic seafloor data. This paper describes the design goal of hydrophone, component specifications, field data analyzed, and discusses the future directions of instrument development. Keywords: T-wave; Hydrophone; OBS; acoustic signal Referance: 1 Fox, C. G. and R. P. Dziak, Intenal deformation of the Gorda Plate observedb y hydroacoustimc onitoring, J . Geophys Res., 104, 17603-17615, 1999. 2 Fox, C. G., H. Matsumoto and T.K.Lau, Monitoring Pacific Ocean seismicity from an autonomous hydrophone array. , J . Geophys. Res., 106,4183-4206, 2001. 3 Nicolas, A., Structures of ophiolites and dynamics of oceanic lithosphere. Dordrecht ; Boston : Kluwer Academic Publishers, 1989. 4. Park, M., R.I. Odom, and D.J. Soukup (2001). Modal scattering: a key to understanding oceanic T-waves, Geophys. Res. Lett. 28, 3401-3404. 5. Tolstoy, I. and M. Ewing (1950). The T phase of shallow-focus earthquakes, Bull. Seismol. Soc. Am. 40, 25-51.

  20. 3rd year final contractor report for: U.S. Department of Energy Stewardship Science Academic Alliances Program Project Title: Detailed Measurements of Rayleigh-Taylor Mixing at Large and Small Atwood Numbers

    SciTech Connect

    Malcolm J. Andrews

    2006-04-14

    This project had two major tasks: Task 1. The construction of a new air/helium facility to collect detailed measurements of Rayleigh-Taylor (RT) mixing at high Atwood number, and the distribution of these data to LLNL, LANL, and Alliance members for code validation and design purposes. Task 2. The collection of initial condition data from the new Air/Helium facility, for use with validation of RT simulation codes at LLNL and LANL. This report describes work done in the last twelve (12) months of the project, and also contains a summary of the complete work done over the three (3) life of the project. As of April 1, 2006, the air/helium facility (Task 1) is now complete and extensive testing and validation of diagnostics has been performed. Initial condition studies (Task 2) is also comp lete. Detailed experiments with air/helium with Atwood numbers up to 0.1 have been completed, and Atwood numbers of 0.25. Within the last three (3) months we have been able to successfully run the facility at Atwood numbers of 0.5. The progress matches the project plan, as does the budget. We have finished the initial condition studies using the water channel, and this work has been accepted for publication on the Journal of Fluid Mechanics (the top fluid mechanics journal). Mr. Nick Mueschke and Mr. Wayne Kraft are continuing with their studies to obtain PhDs in the same field, and will also continue their collaboration visits to LANL and LLNL. Over its three (3) year life the project has supported two(2) Ph.D.’s and three (3) MSc’s, and produced nine (9) international journal publications, twenty four (24) conference publications, and numerous other reports. The highlight of the project has been our close collaboration with LLNL (Dr. Oleg Schilling) and LANL (Drs. Dimonte, Ristorcelli, Gore, and Harlow).

  1. Galileo's Medicean Moons (IAU S269)

    NASA Astrophysics Data System (ADS)

    Barbieri, Cesare; Chakrabarti, Supriya; Coradini, Marcello; Lazzarin, Monica

    2010-11-01

    Preface; 1. Galileo's telescopic observations: the marvel and meaning of discovery George V. Coyne, S. J.; 2. Popular perceptions of Galileo Dava Sobel; 3. The slow growth of humility Tobias Owen and Scott Bolton; 4. A new physics to support the Copernican system. Gleanings from Galileo's works Giulio Peruzzi; 5. The telescope in the making, the Galileo first telescopic observations Alberto Righini; 6. The appearance of the Medicean Moons in 17th century charts and books. How long did it take? Michael Mendillo; 7. Navigation, world mapping and astrometry with Galileo's moons Kaare Aksnes; 8. Modern exploration of Galileo's new worlds Torrence V. Johnson; 9. Medicean Moons sailing through plasma seas: challenges in establishing magnetic properties Margaret G. Kivelson, Xianzhe Jia and Krishan K. Khurana; 10. Aurora on Jupiter: a magnetic connection with the Sun and the Medicean Moons Supriya Chakrabarti and Marina Galand; 11. Io's escaping atmosphere: continuing the legacy of surprise Nicholas M. Schneider; 12. The Jovian Rings Wing-Huen Ip; 13. The Juno mission Scott J. Bolton and the Juno Science Team; 14. Seeking Europa's ocean Robert T. Pappalardo; 15. Europa lander mission: a challenge to find traces of alien life Lev Zelenyi, Oleg Korablev, Elena Vorobyova, Maxim Martynov, Efraim L. Akim and Alexander Zakahrov; 16. Atmospheric moons Galileo would have loved Sushil K. Atreya; 17. The study of Mercury Louise M. Prockter and Peter D. Bedini; 18. Jupiter and the other giants: a comparative study Thérèse Encrenaz; 19. Spectroscopic and spectrometric differentiation between abiotic and biogenic material on icy worlds Kevin P. Hand, Chris McKay and Carl Pilcher; 20. Other worlds, other civilizations? Guy Consolmagno, S. J.; 21. Concluding remarks Roger M. Bonnet; Posters; Author index; Object index.

  2. THE NATURE OF FOSSIL GALAXY GROUPS: ARE THEY REALLY FOSSILS?

    SciTech Connect

    La Barbera, F.; Sorrentino, G.; De Carvalho, R. R.; De la Rosa, I. G.; Gal, R. R.; Kohl-Moreira, J. L.

    2009-04-15

    We use SDSS-DR4 photometric and spectroscopic data out to redshift z {approx} 0.1 combined with ROSAT All Sky Survey X-ray data to produce a sample of 25 fossil groups (FGs), defined as bound systems dominated by a single, luminous elliptical galaxy with extended X-ray emission. We examine possible biases introduced by varying the parameters used to define the sample, and the main pitfalls are also discussed. The spatial density of FGs, estimated via the V/V {sub MAX} test, is 2.83 x 10{sup -6} h {sup 3} {sub 75} Mpc{sup -3} for L{sub X} > 0.89 x 10{sup 42} h {sup -2} {sub 75} erg s{sup -1} consistent with Vikhlinin et al., who examined an X-ray overluminous elliptical galaxy sample (OLEG). We compare the general properties of FGs identified here with a sample of bright field ellipticals generated from the same data set. These two samples show no differences in the distribution of neighboring faint galaxy density excess, distance from the red sequence in the color-magnitude diagram, and structural parameters such as a {sub 4} and internal color gradients. Furthermore, examination of stellar populations shows that our 25 FGs have similar ages, metallicities, and {alpha}-enhancement as the bright field ellipticals, undermining the idea that these systems represent fossils of a physical mechanism that occurred at high redshift. Our study reveals no difference between FGs and field ellipticals, suggesting that FGs might not be a distinct family of true fossils, but rather the final stage of mass assembly in the universe.

  3. Some medical aspects of an 8-month's space flight.

    PubMed

    Atkov OYu

    1992-01-01

    In 1984 a 237-day space flight was performed on board the orbital complex Salyut-7-Soyuz-T with the crew members Leonid D. Kizim (Commander), Vladimnir A. Solovyov (Flight-Engineer), and Oleg Yu. Atkov (Cosmonaut Researcher). The major medical task was to continue the study of the acute stage of adaptation to weightlessness, phenomenology and mechanisms of changes in hemodynamics, metabolism and other functions. During flight, echocardiographic and biochemical measurements, vestibular and sensory studies were conducted extensively. In 1988-1989, the fourth prime crew performed its flight on the Mir orbital station. The crew consisted of: A.A. Volkov (Commander, Cr), S.K. Krikalyov (Flight-Engineer, FE) who were launched together with J.L. Cretien on November 26, 1988 as well as V.V. Polyakov (physician, cosmonaut-researcher, CP) who was in orbit until August 29, 1988 as a member of the third and fourth expeditions. Cr and FE remained in orbit for 151 days and CP for 421 days. Now we have 4 people experiencing 8 months space flight. The countermeasures included regular exercises on a treadmill and bicycle ergometer, use of G-suits and lower body negative pressure (LBNP) training at the final stage. The cosmonauts exercised for a hour twice a day for 3 days on end and then had an "active rest" day. On the recovery day the cosmonauts were recommended to take water-salt supplements according to the following protocol: 2.7 g NaCl in 300 ml liquid during lunch and dinner plus 1.8 g NaCl in 150 ml liquid immediately before they began preparing for the descent (after they donned their space suits). During re-entry the cosmonauts had an anti-G suit on (without bladders).

  4. Estimating the Soil Instability from CSEM Monitoring Data at the City of 15th May, Egypt

    NASA Astrophysics Data System (ADS)

    Hachay, Olga, ,, Prof.; Atya, Magdy, ,, Prof.; Khachay, Oleg; El Sayed, El Said A. El Sayed1 A.

    2014-05-01

    The site of investigation, 15th May city, is a new suburb of Helwan, at about 35 km south of Cairo, Egypt. The work is aimed to investigate the rock mass stability at 'Quarter 27' in 15th May City. A controlled source electromagnetic (CSEM) approach developed earlier by IGF UB RAS (Geophysical Federal Institute, Ural Branch of Russian Academy of Science) is applied to image the ranked deformation levels in the massive structure. The wide profile system of observation has been used to monitor the three components of the alternating magnetic field along predefined measuring lines in the study area. Four cycles of observation have been carried out in 2008, 2010, 2011, and 2012. The acquired data sets have been subjected to analytical processing procedure to estimate the changes in the geotechnical parameters during the time of these four cycles of observation. The analytical treatments provided good information about the structure of the rock massive and its rank of degradation, the lateral distribution of the geotechnical heterogeneity, and finally a conclusive outcome about foundation stability. We conclude that the general dynamic state close to the destruction level within the investigation area is getting worse over the time; this is reflected in the crack's densities and positions, also on the changes in the lateral distribution of geoelectric heterogeneity as an indicator of the saturation of the surface rock in the study area with water [1]. 1. Magdy A. Atya, Olga A. Hachay, Mamdouh M. Soliman, Oleg Y. Khachay, Ahmed B. Khalill, Mahmoud Gaballah, Fathy F.Shaaban and Ibrahim A.El. Hemali. CSEM imaging of the near surface dynamics and its impact for foundation stability at quarter 27,15-th of May City, Helwan, Egypt. // Earth sciences research journal, 2010,Vol.14, N1, p.76-87.

  5. Estimating the geotechnical Parameters from CSEM monitoring Data for the Buildings and the Environment at the City of 15th May, Egypt

    NASA Astrophysics Data System (ADS)

    Hachay, Olga; Atya, Magdy; Khachay, Oleg

    2015-04-01

    The site of investigation, 15th May city, is a new suburb of Helwan, at about 35 km south of Cairo, Egypt. The work is aimed to investigate the rock mass stability at "Quarter 27" in 15th May City, which is linked with cracks formation into the buildings. A controlled source electromagnetic (CSEM) approach developed earlier by IGF UB RAS (Geophysical Federal Institute, Ural Branch of Russian Academy of Science) is applied to image the ranked deformation levels in the massive structure. The wide profile system of observation has been used to monitor the three components of the alternating magnetic field along predefined measuring lines in the study area. Four cycles of observation have been carried out in 2008, 2010, 2011, and 2012. The acquired data sets have been subjected to analytical processing procedure to estimate the changes in the geotechnical parameters during the time of these four cycles of observation. The analytical treatments provided good information about the structure of the rock massive and its rank of degradation, the lateral distribution of the geotechnical heterogeneity, and finally a conclusive outcome about foundation stability. We conclude that the general dynamic state close to the destruction level within the investigation area is getting worse over the time; this is reflected in the crack's densities and positions, also on the changes in the lateral distribution of geoelectric heterogeneity as an indicator of the saturation of the surface rock in the study area with water [1]. Reference 1. Magdy A. Atya, Olga A. Hachay, Mamdouh M. Soliman, Oleg Y. Khachay, Ahmed B. Khalill, Mahmoud Gaballah, Fathy F.Shaaban and Ibrahim A.El. Hemali. CSEM imaging of the near surface dynamics and its impact for foundation stability at quarter 27,15-th of May City, Helwan, Egypt. // Earth sciences research journal, 2010,Vol.14, N1, p.76-87.

  6. Near Source Structural Effects on Seismic Waves: Implication for Shear Motion Generation During SPE-4Prime

    NASA Astrophysics Data System (ADS)

    Pitarka, A.

    2015-12-01

    Arben Pitarka, Souheil M. Ezzedine, Oleg Y. Vorobiev, Tarabay H. Antoun, Lew A. Glenn, William R. Walter, Robert J. Mellors, and Evan Hirakawa. We have analyzed effects of wave scattering due to near-source structural complexity and sliding joint motion on generation of shear waves from SPE-4Pprime, a shallow chemical explosion conducted at the Nevada National Security Site. In addition to analyzing far-field ground motion recorded on three-component geophones, we performed high-frequency simulations of the explosion using a finite difference method and heterogeneous media with stochastic variability. The stochastic variations of seismic velocity were modeled using Gaussian correlation functions. Using simulations and recorded waveforms we demonstrate the implication of wave scattering on generation of shear motion, and show the gradual increase of shear motion energy as the waves propagate through media with variable scattering. The amplitude and duration of shear waves resulting from wave scattering are found to be dependent on the model complexity and to a lesser extent to source distance. Analysis of shear-motion generation due to joint motion were conducted using numerical simulations performed with GEODYN-L, a parallelized Lagrangian hydrocode, while a stochastic approach was used in depicting the properties of joints. Separated effects of source and wave scattering on shear motion generation will be shown through simulated motion. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 Release Number: LLNL-ABS-675570

  7. Optical non-invasive 3D characterization of pottery of pre-colonial Paranaiba valley tribes

    NASA Astrophysics Data System (ADS)

    Magalhães, Wagner; Alves, Márcia Angelina; Costa, Manuel F.

    2014-08-01

    Optical non-invasive inspection tools and methods had expensively proven, for several decades now, their invaluable importance in the preservation of cultural heritage and artwork. In this paper we will report on an optical non-invasive microtopographic characterization work on pre-historical and pre-colonial ceramics and pottery of tribes in the Paranaiba valley in Minas Gerais, Brazil. The samples object of this work were collected at the Inhazinha archeological site (19º 10'00" S / 47° 11'00" W) in the vicinity of Perdizes municipality in transition between the West mining area and the "triangle" area in the center of Brazil. It is a hilly region (850m high) traversed by a number of rivers and streams tributary of Araguari river like Quebra Anzol river and Macaúba and Olegário streams. The Inhazinha site' excavations are part of the Project Jigsaw Hook which since 1980 aimed the establishment of a chrono-cultural framework associated with the study of the socio-cultural dynamics corresponding to successive occupations of hunter-recollector-farmer' tribes in prehistoric and pre-colonial times in the Paranaíba valley in Minas Gerais, Brazil. Two groups of indigenous Indian occupations were found. Both of the pre-colonial period dated at 1,095 ± 186 years ago (TL-FATEC/SP for Zone 1) and of the early nineteenth century dated at 212 ± 19 years ago (EMS-CENA-USP/SP) and 190 ± 30 years ago (C14- BETA/USA) in Zone 2 seemingly occupied by southern Kayapós tribes. The pottery found is decorated with incisions with different geometric distributions and levels of complexity.

  8. ESO's Hidden Treasures Brought to Light

    NASA Astrophysics Data System (ADS)

    2011-01-01

    Telescope in Paranal, Chile, with guided tours and the opportunity to participate in a night's observations. Runner-up prizes included an iPod, books and DVDs. Furthermore, the highest ranked images will be released for the world to see on www.eso.org as Photo Releases or Pictures of the Week, co-crediting the winners. The jury evaluated the entries based on the quality of the data processing, the originality of the image and the overall aesthetic feel. As several of the highest ranked images were submitted by the same people, the jury decided to make awards to the ten most talented participants, so as to give more people the opportunity to win a prize and reward their hard work and talent. The ten winners of the competition are: * First prize, a trip to Paranal + goodies: Igor Chekalin (Russia). * Second prize, an iPod Touch + goodies: Sergey Stepanenko (Ukraine). * Third Prize, VLT laser cube model + goodies: Andy Strappazzon (Belgium). * Fourth to tenth prizes, Eyes on the Skies Book + DVD + goodies: Joseph (Joe) DePasquale (USA), Manuel (Manu) Mejias (Argentina), Alberto Milani (Italy), Joshua (Josh) Barrington (USA), Oleg Maliy (Ukraine), Adam Kiil (United Kingdom), Javier Fuentes (Chile). The ten winners submitted the twenty highest ranked images: 1. M78 by Igor Chekalin. 2. NGC3169 & NGC3166 and SN 2003cg by Igor Chekalin. 3. NGC6729 by Sergey Stepanenko. 4. The Moon by Andy Strappazzon. 5. NGC 3621 by Joseph (Joe) DePasquale. 6. NGC 371 by Manuel (Manu) Mejias. 7. Dust of Orion Nebula (ESO 2.2m telescope) by Igor Chekalin. 8. NGC1850 EMMI by Sergey Stepanenko. 9. Abell 1060 by Manuel (Manu) Mejias. 10. Celestial Prominences NGC3582 by Joseph DePasquale. 11. Globular Cluster NGC288 by Alberto Milani. 12. Antennae Galaxies by Alberto Milani. 13. Sakurai's Object by Joshua (Josh) Barrington. 14. NGC 1929, N44 Superbubble by Manuel (Manu) Mejias. 15. NGC 3521 by Oleg Maliy. 16. NGC 6744 by Andy Strappazzon. 17. NGC 2217 by Oleg Maliy. 18. VIMOS.2008-01-31T07_16_47j by

  9. 3D Fault Geometry and Basin Evolution in the Northern Continental Borderland Offshore Southern California

    NASA Astrophysics Data System (ADS)

    Schindler, C. S.; Nicholson, C.; Sorlien, C.

    2007-12-01

    Grids of recently released high-quality industry multichannel seismic (MCS) reflection data, combined with bathymetry and offshore well data are used to map digital 3D fault surfaces and stratigraphic reference horizons in the northern Continental Borderland offshore of southern California. This area experienced large-scale oblique crustal extension and translation associated with the initiation and development of the Pacific-North American plate boundary. The 3D surfaces of structure and stratigraphy can thus be used to better understand and evaluate regional patterns of uplift, subsidence, fault interaction and other aspects of plate boundary deformation. Our mapping in Santa Cruz basin and on Santa Rosa and Santa Cruz-Catalina Ridge reveals an unusual pattern of faulting, folding and basin subsidence. This subsidence is significant (up to 3-4 km since early-Miocene time) and is responsible for the development of several major Borderland basins. Vertical motions can be estimated from an early-Miocene unconformity that likely represents a paleo-horizontal, near-paleo-sea-level erosional surface. As such, it can be used to reconstruct Borderland forearc geometry prior to rifting, subsidence and subsequent basin inversion. Major findings to date include: (a) a better characterization of the complex 3D geometry and pinch-out of the eastern edge of the northern forearc Nicolas terrane and its implications for Borderland basin development, plate reconstructions, and vertical motions associated with oblique rifting; (b) recognition that the East Santa Cruz Basin fault, previously thought to be a predominantly high-angle, large- displacement right-slip fault representing the eastern edge of the Nicolas terrane, is in fact a series of reactivated right-stepping, NE-dipping reverse-separation faults; (c) discovery that NW-striking faults associated with Santa Cruz-Catalina Ridge bend west into a horse-tail structure to interact with and contribute to the southern frontal

  10. Validation of satellite retrievals of cloud microsphysics and liquid water path using observations from FIRE

    NASA Technical Reports Server (NTRS)

    Rossow, W.; White, A.; Han, Q.; Welch, R.; Chou, J.

    1995-01-01

    Cloud effective radii (r(sub e)) and cloud liquid water path (LWP) are derived from ISCCP spatially sampled satellite data and validated with ground-based pyranometer and microwave radiometer measurements taken on San Nicolas Island during the 1987 FIRE IFO. Values of r(sub e) derived from the ISCCP data are also compared to values retrieved by a hybrid method that uses the combination of LWP derived from microwave measurement and optical thickness derived from GOES data. The results show that there is significant variability in cloud properties over a 100 km x 80 km area and that the values at San Nicolas Island are not necessarily representative of the surrounding cloud field. On the other hand, even though there were large spatial variations in optical depth, the r(sub e) values remained relatively constant (with sigma less than or equal to 2-3 microns in most cases) in the marine stratocumulus. Furthermore, values of r(sub e) derived from the upper portion of the cloud generally are representative of the entire stratiform cloud. When LWP values are less than 100 g m(exp -2), then LWP values derived from ISCCP data agree well with those values estimated from ground-based microwave measurements. In most cases LWP differences were less than 20 g m(exp -2). However, when LWP values become large (e.g., greater than or equal to 200 g m(exp -2)), then relative differences may be as large as 50%- 100%. There are two reasons for this discrepancy in the large LWP clouds: (1) larger vertical inhomogeneities in precipitating clouds and (2) sampling errors on days of high spatial variability of cloud optical thicknesses. Variations of r(sub e) in stratiform clouds may indicate drizzle: clouds with droplet sizes larger than 15 microns appear to be associated with drizzling, while those less than 10 microns are indicative of nonprecipitating clouds. Differences in r(sub e) values between the GOES and ISCCP datasets are found to be 0.16 +/- 0.98 micron.

  11. Interpreting the paleozoogeography and sea level history of thermally anomalous marine terrace faunas: a case study from the the Last Interglacial Complex of San Clemente Island, California

    USGS Publications Warehouse

    Muhs, Daniel R.; Groves, Lindsey T.; Schumann, R. Randall

    2014-01-01

    Marine invertebrate faunas with mixtures of extralimital southern and extralimital northern faunal elements, called thermally anomalous faunas, have been recognized for more than a century in the Quaternary marine terrace record of the Pacific Coast of North America. Although many mechanisms have been proposed to explain this phenomenon, no single explanation seems to be applicable to all localities where thermally anomalous faunas have been observed. Here, we describe one such thermally anomalous fossil fauna that was studied on the second emergent marine terrace at Eel Point on San Clemente Island. The Eel Point terrace complex is a composite feature, consisting of a narrow upper bench (terrace 2a) and a broader lower bench (terrace 2b). Terrace 2b, previously dated from ~128 ka to ~114 ka, was thought to date solely to marine isotope stage (MIS) 5.5, representing the peak of the last interglacial period. Nevertheless, the fauna contains an extralimital northern species and several northward-ranging species, as well as an extralimital southern species and several southward-ranging species. Similar faunas with thermally anomalous elements have also been reported from San Nicolas Island, Point Loma (San Diego County), and Cayucos (San Luis Obispo County), California. U-series dating of corals at those localities shows that the thermally anomalous faunas may be the result of mixing of fossils from both the ~100-ka (cool-water) and the ~120-ka (warm-water) sea level high stands. Submergence, erosion, and fossil mixing of the ~120-ka terraces by the ~100-ka high-sea stand may have been possible due to glacial isostatic adjustment (GIA) effects on North America, which could have resulted in a higher-than-present local sea level stand at ~100 ka. The terrace elevation spacing on San Clemente Island is very similar to that on San Nicolas Island, and we hypothesize that a similar mixing took place on San Clemente Island. Existing fossil records from older terraces

  12. Seasonal and spatial variation of the bacterial mutagenicity of fine organic aerosol in southern california.

    PubMed Central

    Hannigan, M P; Cass, G R; Lafleur, A L; Busby, W F; Thilly, W G

    1996-01-01

    The bacterial mutagenicity of a set of 1993 urban particulate air pollution samples is examined using the Salmonella typhimurium TM677 forward mutation assay. Amibent fine particulate samples were collected for 24 hr every sixth day throughout 1993 at four urban sites, including Long Beach, central Los Angeles, Azusa, and Rubidoux, California, and at an upwind background site on San Nicolas Island. Long Beach and central Los Angeles are congested urban areas where air quality is dominated by fresh emissions from air pollution sources; Azuasa and Rubidoux are located farther downwind and receive transported air pollutants plus increased quantities of the products of atmospheric chemical reactions. Fine aerosol samples from Long Beach and Los Angeles show a pronounced seasonal variation in bacterial mutagenicity per cubic meter of- ambient air, with maximum in the winter and a minimum in the summer. The down-wind smog receptor site at Rubidoux shows peak mutagenicity (with postmitochondrial supernatant but no peak without postmitochondrial supernatant) during the September-October periods when direct transport from upwind sources can be expected. At most sites the mutagenicity per microgram of organic carbon from the aerosol is not obviously higher during the summer photochemical smog period than during the colder months. Significant spatial variation in bacterial mutagenicity is observed: mutagenicity per cubic meter of ambient air, on average, is more than an order of magnitude lower at San Nicolas Island than within the urban area. The highest mutagenicity values per microgram of organics supplied to the assay are found at the most congested urban sites at central Los Angeles and Long Beach. The highest annual average values of mutagenicity per cubic meter of air sampled occur at central Los Angeles. These findings stress the importance of proximity to sources of direct emissions of bacterial mutagens and imply that if important mutagen-forming atmospheric

  13. [Is there still a future for the French "Perruche" jurisprudence?].

    PubMed

    Manaouil, C; Jardé, O

    2012-02-01

    Since March 1, 2010, French citizens have a new procedure for defending their rights: the Priority preliminary ruling on the issue of constitutionality (QPC). During a trial, any citizen may request that the Constitutional Council be seized if he/she considers that a provision of a law applicable is inconsistent with the Constitution. One of the first QPCs was released regarding the Perruche antijurisprudence provision. The decision of the Supreme Court (Cour de Cassation) on November 17, 2000 had granted the child Nicolas Perruche the right to financial compensation for the material costs related to his physical disability as a result of congenital rubella. In response, Article 1 of the law of March 4, 2002 was passed in order to prohibit the compensation of a child "solely because of his/her birth". Since this law was enacted, only the moral injury of the parents can be indemnified in a case like that of Nicolas Perruche. Over time, the application of this article of the law of March 4, 2002 has become the subject of a heated debate. In the QPC decision of June 11, 2010, the Constitutional Council found the "Perruche antijurisprudence" provision to be consistent with the Constitution, except for the transitional provisions. Thus, it is assumed that the "Perruche antijurisprudence" provision applies to all children born after the entry into force of the law, i.e., as of March 7, 2002. In addition, the Perruche jurisprudence prevails for all claims filed before March 7, 2002. The issue of the cases for which legal action was taken after March 7, 2002 for a child born before March 7, 2002 remains debated. The current debate is whether the implementation of the law of March 4, 2002 should be extended or not to instances subsequent to March 7, 2002 for births prior to that date. In the present state of jurisprudence, the Court of Appeals answers negatively and applies the Perruche jurisprudence to all children born before March 7, 2002, regardless of the date by which

  14. Antibacterial activity of carob (Ceratonia siliqua L.) extracts against phytopathogenic bacteria Pectobacterium atrosepticum.

    PubMed

    Meziani, Saïda; Oomah, B Dave; Zaidi, Farid; Simon-Levert, Annabel; Bertrand, Cédric; Zaidi-Yahiaoui, Rachida

    2015-01-01

    Acetone and ethanol extracts of carob (Ceratonia siliqua L.) leaf and pods were evaluated for their in vitro inhibitory ability against the pectinolytic Gram negative Pectobacterium atrosepticum (Pca, CFBP-5384) bacteria, the causal agent of potato soft rot. Potato (Solanum tuberosum, var nicola) tuber rot tissues obtained after 5 day bacterial inoculation was analyzed by LC-MS and GC-MS to study Pca pathogenicity. Trans/cis N-feruloylputrescine was identified in potato tuber after 5-day inoculation with Pca in a dark moist chamber. Although glycoalkoloid (α-chaconine and α-solanine) production increased due to Pca soft rot infection, it was not a resistance-determining factor. Many secondary metabolites were identified including the phytoalexins solavetivone and fatty acids responsible for plant defence responses. Acetone extract of carob leaf (FCA) exhibited the strongest inhibitory effect (IC50 = 1.5 mg/ml) and displayed synergistic antimicrobial effect in the presence of infected potato tuber extract (Pdt-Pca extract) against Pca. This synergy could be used in an integrated control program against potato soft rot pathogens, thereby reducing chemical treatments.

  15. Distribution of Xantus' Murrelet Synthliboramphus hypoleucus at sea in the Southern California Bight, 1995-97

    USGS Publications Warehouse

    Whitworth, Darrell L.; Takekawa, John Y.; Carter, Harry R.; Newman, Scott H.; Keeney, Thomas W.; Kelly, Paul R.

    2000-01-01

    We radiomarked 153 Xantus' Murrelets Synthliboramphus hypoleucus captured at sea near Santa Barbara Island (SBI), the largest murrelet colony in the California Channel Islands, USA. We tracked these radiomarked murrelets in the Southern California Bight (SCB) off coastal southern California during the 1995-97 breeding seasons. In 1995 during mild El Nino conditions, the murrelets were distributed in non-upwelling areas. In 1996-97, they were distributed in dense patches, aggregating in cool upwelled waters near the northern Channel Islands or south of San Nicolas Island. Murrelets flew longer distances from SBI to foraging areas in 1997 (x?? = 111 ?? 44 km) than in 1996 (x?? = 62 ?? 25 km), but the distances they travelled did not differ between months (Apr and May) within years. Mean foraging distances from SBI were similar for 'incubating' murrelets (determined on the basis of repeated visits to SBI) and 'non-incubating' murrelets during the colony attendance period. We attributed the low return rate of radiomarked murrelets to SBI to the capture and marking of a large proportion of birds that were not actively incubating rather than to any adverse effects of radio attachment. We believe changes in murrelet foraging patterns between the 1970s and 1990s are associated with changes in prey resources in the SCB. Flexibility in the foraging strategies of these murrelets may be related to the highly variable marine environment at the southern end of the California Current Upwelling System.

  16. Theorizing epigenesis in a time of preexistence: From the end of the seventeenth century to the 1720s.

    PubMed

    Ferraro, Angela

    2016-12-01

    According to a classic periodization in the history of science, biological thought as it emerged in France from the last decades of the seventeenth century to the 1740s was strongly committed to the doctrine of the preexistence of germs. Nicolas Malebranche's role in disseminating this paradigm, particularly in the milieu of the Académie Royale des Sciences during the years when Bernard Le Bouyer de Fontenelle was its secretary, has been studied in detail, especially by Jacques Roger. However, much less has been said about the authors who argued against this doctrine prior to the appearance of the relevant pieces by Pierre-Louis Moreau de Maupertuis, Georges-Louis Leclerc, Comte de Buffon, and Denis Diderot. I aim to examine a series of French medical treatises and clandestine manuscripts that outlined a mechanist theory of epigenesis, between the end of the seventeenth century and the 1720s, to bring to light the strategies-often quite original-that allowed them to achieve this result. One interesting case is the heterodox readers of Malebranche, which use some of his own arguments (notably on the physiology of brain traces and the laws of nature) both against preexistence and to support epigenesis. I inquire into the historical worth of the positions defended by these authors as well as into the connections existing between the history of epigenesis and that of materialism in the early modern era.

  17. Pathology and Epidemiology of Ceruminous Gland Tumors among Endangered Santa Catalina Island Foxes (Urocyon littoralis catalinae) in the Channel Islands, USA

    PubMed Central

    Vickers, T. Winston; Clifford, Deana L.; Garcelon, David K.; King, Julie L.; Duncan, Calvin L.; Gaffney, Patricia M.; Boyce, Walter M.

    2015-01-01

    In this study, we examined the prevalence, pathology, and epidemiology of tumors in free-ranging island foxes occurring on three islands in the California Channel Islands, USA. We found a remarkably high prevalence of ceruminous gland tumors in endangered foxes (Urocyon littoralis catalinae) occurring on Santa Catalina Island (SCA)—48.9% of the dead foxes examined from 2001–2008 had tumors in their ears, and tumors were found in 52.2% of randomly-selected mature (≥ 4 years) foxes captured in 2007–2008, representing one of the highest prevalences of tumors ever documented in a wildlife population. In contrast, no tumors were detected in foxes from San Nicolas Island or San Clemente Island, although ear mites (Otodectes cynotis), a predisposing factor for ceruminous gland tumors in dogs and cats, were highly prevalent on all three islands. On SCA, otitis externa secondary to ear mite infection was highly correlated with ceruminous gland hyperplasia (CGH), and tumors were significantly associated with the severity of CGH, ceruminous gland dysplasia, and age group (older foxes). We propose a conceptual model for the formation of ceruminous gland tumors in foxes on SCA that is based on persistent, ubiquitous infection with ear mites, and an innate, over exuberant inflammatory and hyperplastic response of SCA foxes to these mites. Foxes on SCA are now opportunistically treated with acaricides in an attempt to reduce mite infections and the morbidity and mortality associated with this highly prevalent tumor. PMID:26618759

  18. U-Form vs. M-Form: How to Understand Decision Autonomy Under Healthcare Decentralization? Comment on "Decentralisation of Health Services in Fiji: A Decision Space Analysis".

    PubMed

    Bustamante, Arturo Vargas

    2016-06-07

    For more than three decades healthcare decentralization has been promoted in developing countries as a way of improving the financing and delivery of public healthcare. Decision autonomy under healthcare decentralization would determine the role and scope of responsibility of local authorities. Jalal Mohammed, Nicola North, and Toni Ashton analyze decision autonomy within decentralized services in Fiji. They conclude that the narrow decision space allowed to local entities might have limited the benefits of decentralization on users and providers. To discuss the costs and benefits of healthcare decentralization this paper uses the U-form and M-form typology to further illustrate the role of decision autonomy under healthcare decentralization. This paper argues that when evaluating healthcare decentralization, it is important to determine whether the benefits from decentralization are greater than its costs. The U-form and M-form framework is proposed as a useful typology to evaluate different types of institutional arrangements under healthcare decentralization. Under this model, the more decentralized organizational form (M-form) is superior if the benefits from flexibility exceed the costs of duplication and the more centralized organizational form (U-form) is superior if the savings from economies of scale outweigh the costly decision-making process from the center to the regions. Budgetary and financial autonomy and effective mechanisms to maintain local governments accountable for their spending behavior are key decision autonomy variables that could sway the cost-benefit analysis of healthcare decentralization.

  19. Carbon dioxide conversion by means of coplanar dielectric barrier discharges

    NASA Astrophysics Data System (ADS)

    Schiorlin, Milko; Klink, Rouven; Brandenburg, Ronny

    2016-08-01

    To face the worldwide problem of anthropogenic carbon dioxide (CO2) emission new techniques have to be developed. One approach for carbon capture utilization (CCU) is the conversion of CO2 to more valuable chemicals, e.g., carbon monoxide (CO) by means of non-thermal plasma generated at ambient conditions and supplied by excess energy from renewable sources. This paper reports about the effect of the admixture of inert gases, namely nitrogen or argon to CO2 in a coplanar dielectric barrier discharge (DBD). Systematic experiments were conducted to investigate the effects of applied voltage, frequency, flowrate and CO2 concentration in the influent. The composition of products, energy efficiency and yield were determined. Within the investigated parameter ranges, the maximum conversion of CO2 to CO efficiency of 1% was achieved when the specific input energy was 190 J L-1, whereas the maximum CO yield of 0.7% was achieved when the specific input energy was 210 J L-1. In conclusion, the energy efficiency can be significantly increased by operating the plasma in a diluted CO2 gas. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  20. Liver surgery: a long journey to improve results.

    PubMed

    Di Carlo, Isidoro; Toro, Adriana

    2016-03-01

    25th World Congress of the International Association of Surgeons, Gastroenterologists and Oncologists, Fuzhou, China, 4-6 September 2015 Fuzhou, China hosted the 25th World Congress of the International Association of Surgeons, Gastroenterologists and Oncologists (IASGO). This was the first Congress after the passing away of Nicolas J Lygidakis, the founder of the International Association, who was a surgeon and an energetic secretary general of the association for 25 years. All members of the association are grateful for his message of medicine beyond the frontiers and health for all. The president of the association remains Professor Masatoshi Makuuchi, Emeritus Professor Of Surgery at The University of Tokyo (Japan), with Professor Dan Dunda from Harvard Medical School (MA, USA) and Professor Kyoichi Takaori from Kyoto University (Japan), as the secretaries general of the association. The President of the 2015 IASGO World Congress was Professor Yupei Zhao, Professor of Surgery at the University of Beijing and President of the Chinese Society of Surgery. The Congress was held under the auspices of IASGO president Masatoshi Makuuchi from Japan and both secretaries general. Fuzhou is a pleasant city that is well organized, but not as busy compared with other Chinese cities. All of the city's people were very kind and welcoming to the attendees at the meeting. The congress focuses on the major advancements in diagnosis and treatment of the gastroenterological diseases, here we report the most important progress in the field of hepatic surgery.

  1. Design study for a 16x zoom lens system for visible surveillance camera

    NASA Astrophysics Data System (ADS)

    Vella, Anthony; Li, Heng; Zhao, Yang; Trumper, Isaac; Gandara-Montano, Gustavo A.; Xu, Di; Nikolov, Daniel K.; Chen, Changchen; Brown, Nicolas S.; Guevara-Torres, Andres; Jung, Hae Won; Reimers, Jacob; Bentley, Julie

    2015-09-01

    *avella@ur.rochester.edu Design study for a 16x zoom lens system for visible surveillance camera Anthony Vella*, Heng Li, Yang Zhao, Isaac Trumper, Gustavo A. Gandara-Montano, Di Xu, Daniel K. Nikolov, Changchen Chen, Nicolas S. Brown, Andres Guevara-Torres, Hae Won Jung, Jacob Reimers, Julie Bentley The Institute of Optics, University of Rochester, Wilmot Building, 275 Hutchison Rd, Rochester, NY, USA 14627-0186 ABSTRACT High zoom ratio zoom lenses have extensive applications in broadcasting, cinema, and surveillance. Here, we present a design study on a 16x zoom lens with 4 groups (including two internal moving groups), designed for, but not limited to, a visible spectrum surveillance camera. Fifteen different solutions were discovered with nearly diffraction limited performance, using PNPX or PNNP design forms with the stop located in either the third or fourth group. Some interesting patterns and trends in the summarized results include the following: (a) in designs with such a large zoom ratio, the potential of locating the aperture stop in the front half of the system is limited, with ray height variations through zoom necessitating a very large lens diameter; (b) in many cases, the lens zoom motion has significant freedom to vary due to near zero total power in the middle two groups; and (c) we discuss the trade-offs between zoom configuration, stop location, packaging factors, and zoom group aberration sensitivity.

  2. New insights in understanding plasma-catalysis reaction pathways: study of the catalytic ozonation of an acetaldehyde saturated Ag/TiO2/SiO2 catalyst

    NASA Astrophysics Data System (ADS)

    Sauce, Sonia; Vega-González, Arlette; Jia, Zixian; Touchard, Sylvain; Hassouni, Khaled; Kanaev, Andrei; Duten, Xavier

    2015-07-01

    This paper is a preliminary study intended to straighten out the role of reactive oxygen species in the activation mechanisms occurring in a plasma driven catalysis process for acetaldehyde decomposition. For this purpose, the interaction between the surface, the pollutant and one of the main oxidative species generated by non-thermal plasma, namely ozone, was studied. Acetaldehyde catalytic ozonation over a nanostructured Ag/TiO2/SiO2 catalyst is carried out at room temperature and atmospheric pressure, and followed by diffuse reflectance infrared fourier transform spectroscopy (DRIFTS). For this, the catalyst is firstly saturated with acetaldehyde. At the end of the saturation, acetaldehyde and crotonaldehyde, its condensation product, are identified as the major adsorbed species. In a second step, the surface ozonation is carried out and three additional intermediates are identified, namely, acetone, formic acid and acetic acid. Gaseous CO, CO2, methyl formate and methyl acetate are detected at the DRIFTS outlet, evidencing the partial mineralization of the adsorbed species. A global reaction scheme is proposed for explaining the formation of those adsorbed intermediates and gaseous products. This proposed heterogeneous ozone induced chemistry has to be taken into account when associating non-thermal plasma in air to a catalyst. Contribution to the topical issue "The 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV)", edited by Nicolas Gherardi, Ronny Brandenburg and Lars Stollenwark

  3. Transits of Venus, 1761 and 1769.

    NASA Astrophysics Data System (ADS)

    Abrahams, P.

    2003-12-01

    The Transits of Venus of 1761 and 1769 were widely anticipated, due to the efforts of Edmond Halley and Joseph-Nicolas Delisle in promoting observations to determine solar parallax. Extensive planning resulted in widespread participation; with at least 110 different observing stations stations worldwide for one or both of the events. Results from the 1761 expeditions derived solar parallax measurements between 8.28 and 10.60 arc seconds. The 1769 results were much better, 8.43 to 8.80 arc seconds, as compared with the accurate value of 8.79 arc seconds. This presentation will note the efforts of Halley, Delisle, and James Ferguson in promoting scientific observation of the transit. The poster will include the observations of Thorbern Bergman at Uppsala, Sweden; Samuel Dunn at the Royal Observatory, Greenwich; Charles Green at King George's Island; Samuel Horsley at Oxford; and William Smith at Norriton. These observers are distinguished from their contemporaries by the interesting graphic aids they used to present their studies.

  4. The 'royal disease'--haemophilia A or B? A haematological mystery is finally solved.

    PubMed

    Lannoy, N; Hermans, C

    2010-11-01

      'History can change blood. And blood can change the course of history'. Haemophilia is an illustration of this, as this congenital hereditary coagulation disorder, passed through the majority of royal European families at the beginning of the 20th century by Queen Victoria of England and Empress of the Indies, had indisputable political consequences, which led to one of the most defining moments of contemporary history: the Bolshevik Revolution. Today, none of Queen Victoria's living descendents carry haemophilia. Because of this, the characterization of haemophilia (deficit of either factor VIII or XI) and the identification of the causal mutation are rendered impossible. In 1991, a tomb containing the remains of Czar Nicolas II's entire family was discovered. A second tomb was discovered in 2007, allowing Russian and American scientists to fill in this gap in medical history. Following a scientific approach combining current genetic experimentation tools and the development of biological information technology, researchers were able to identify each body, allowing them to obtain precious genetic material from the young Czar Alexis, who was stricken by the disease, which revealed a causal substitution in the splice acceptor site of exon 4 in the F9 gene. This mutation that is responsible for haemophilia B had traumatized European royal families throughout the 20th century!

  5. Technical improvements in 19th century Belgian window glass production

    NASA Astrophysics Data System (ADS)

    Lauriks, Leen; Collette, Quentin; Wouters, Ine; Belis, Jan

    Glass was used since the Roman age in the building envelope, but it became widely applied together with iron since the 19th century. Belgium was a major producer of window glass during the nineteenth century and the majority of the produced window glass was exported all over the world. Investigating the literature on the development of 19th century Belgian window glass production is therefore internationally relevant. In the 17th century, wood was replaced as a fuel by coal. In the 19th century, the regenerative tank furnace applied gas as a fuel in a continuous glass production process. The advantages were a clean production, a more constant and higher temperature in the furnace and a fuel saving. The French chemist Nicolas Leblanc (1787-1793) and later the Belgian chemist Ernest Solvay (1863) invented processes to produce alkali out of common salt. The artificial soda ash improved the quality and aesthetics of the glass plates. During the 19th century, the glass production was industrialized, influencing the operation of furnaces, the improvement of raw materials as well as the applied energy sources. Although the production process was industrialized, glassblowing was still the work of an individual. By improving his work tools, he was able to create larger glass plates. The developments in the annealing process followed this evolution. The industry had to wait until the invention of the drawn glass in the beginning of the 20th century to fully industrialise the window glass manufacture process.

  6. The economics of well-being.

    PubMed

    Fox, Justin

    2012-01-01

    Gross domestic product has long been the chief measure of national success. But there's been a lot of talk lately about changing that, from economists and world leaders alike. GDP is under siege for three main reasons. First, it is flawed even on its own terms: It misses lots of economic activity (unpaid household work, for example) and, as a single-number representation of vast, complex systems, is inevitably skewed. Second, it fails to account for economic and environmental sustainability. And third, readily available alternative measures may reflect well-being far better, by taking into account factors such as educational achievement, health, and life expectancy. HBR's Justin Fox surveys historical and current views on how to assess national progress, from Jeremy Bentham to Robert Kennedy to Nicolas Sarkozy. He also looks at where we may be headed. The biggest success so far in the campaign to supplant or at least supplement GDP, he finds, is the UN's Human Development Index-on which the United States has never claimed the top spot.

  7. Dietary niche expansion of a kelp forest predator recovering from intense commercial exploitation.

    PubMed

    Hamilton, Scott L; Newsome, Seth D; Caselle, Jennifer E

    2014-01-01

    Marine ecosystems are increasingly at risk from overexploitation and fisheries collapse. As managers implement recovery plans, shifts in species interactions may occur broadly with potential consequences for ecosystem structure and function. In kelp forests off San Nicolas Island, California, USA, we describe striking changes in size structure and life history traits (e.g., size at maturation and sex change) of a heavily fished, ecologically important predator, the California sheephead (Semicossyphus pulcher). These changes occurred in two phases: (1) after intense commercial fishery exploitation in the late 1990s and (2) following recovery in the late 2000s, nearly a decade after management intervention. Using gut contents and stable-isotope values of sheephead and their prey, we found evidence for a dietary niche expansion upon recovery of population size structure to include increased consumption of sea urchins and other mobile invertebrate grazers by larger sized fish. By examining historical diet data and a time series of benthic community composition, we conclude that changes in dietary niche breadth are more likely due to the recovery of size structure from fishing than major shifts in prey availability. Size-dependent predator-prey interactions may have ecosystem consequences and management measures that preserve or restore size structure, and therefore historical trophic roles of key predators, could be vital for maintaining kelp forest ecosystem health.

  8. [The Chair of the medical chemistry department at the Faculty of Medicine and the Chair of chemistry at the School of Pharmacy of Strasbourg (1794-1871)].

    PubMed

    Pabst, Jean-Yves

    2011-01-01

    Strasbourg occupied during the 19th century a privileged place in chemistry, as well in education as in research, and that in particular in three institutions created after the dissolution of the old University during the French Revolution: the Faculty of Sciences, the School then Faculty of Medicine created in 1794, and the School of Pharmacy created in 1804. In 1871, Alsace was annexed by Germany. The chair of medical chemistry in the Faculty of Medicine was successively occupied by: Pierre François Nicolas (1743-1816) in 1794-1795, Frédéric Louis Ehrmann (1741-1801) from 1796 to 1798, Gabriel Masuyer (1761-1849) from 1798 to 1838, and Amédée Cailliot (1805-1884) from 1838 to 1871. The chair of chemistry in the School of Pharmacy was successively occupied by: Louis Hecht (1771-1857)from 1804 to 1835, Jean François Persoz (1805-1868) from 1835 to 1852, Adrien Loir (1816-1899) from 1852 to 1855, Charles Frédéric Gerhardt and Eugène Théodore Jacquemin (1828-1909) from 1856 to 1871.

  9. Quantum Phases of Atom-Molecule Mixtures of Fermionic Atoms

    NASA Astrophysics Data System (ADS)

    Lopez, Nicolas

    2011-03-01

    Nicolas Lopez (University of California, Riverside, USA) Chi-Yong Lin (National Dong Hwa University, Taiwan) Shan-Wen Tsai (University of California, Riverside, USA) Cold atom experiments have realized a variety of multicomponent quantum mixtures, including Bose-Fermi atomic mixtures. Mixtures of fermionic atoms and diatomic molecules, which are boson, have also been obtained by tuning of the interactions with external fields. We study many-body correlations in such a system where the molecules are weakly bound and therefore pairs of fermionic atoms easily convert into and dissociate from the bound molecule state and this exchange mediates a long-range interaction between the fermions. We consider a simple many-body Hamiltonian that includes the destruction of fermionic atom pairs to form single bosonic molecules and vice versa. We employ a functional renomalization-group approach and calculate the renormalized frequency-dependent interaction vertices and fermion self-energies. We find an instability from the disordered quantum liquid phase to a BCS phase and calculate the energy scale for the transition. The unusual frequency-dependence of this mediated interaction leads to strong renormalization of the self-energy, and also affects the couplings in the BCS channel.

  10. Plasma deposition of antimicrobial coating on organic polymer

    NASA Astrophysics Data System (ADS)

    Rżanek-Boroch, Zenobia; Dziadczyk, Paulina; Czajkowska, Danuta; Krawczyk, Krzysztof; Fabianowski, Wojciech

    2013-02-01

    Organic materials used for packing food products prevent the access of microorganisms or gases, like oxygen or water vapor. To prolong the stability of products, preservatives such as sulfur dioxide, sulfites, benzoates, nitrites and many other chemical compounds are used. To eliminate or limit the amount of preservatives added to food, so-called active packaging is sought for, which would limit the development of microorganisms. Such packaging can be achieved, among others, by plasma modification of a material to deposit on its surface substances inhibiting the growth of bacteria. In this work plasma modification was carried out in barrier discharge under atmospheric pressure. Sulfur dioxide or/and sodium oxide were used as the coating precursors. As a result of bacteriological studies it was found that sulfur containing coatings show a 16% inhibition of Salmonella bacteria growth and 8% inhibition of Staphylococcus aureus bacteria growth. Sodium containing coatings show worse (by 10%) inhibiting properties. Moreover, films with plasma deposited coatings show good sealing properties against water vapor. Contribution to the Topical Issue "13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII)", Edited by Nicolas Gherardi, Henryca Danuta Stryczewska and Yvan Ségui.

  11. A-DaGO-Fun: an adaptable Gene Ontology semantic similarity-based functional analysis tool

    PubMed Central

    Mazandu, Gaston K.; Chimusa, Emile R.; Mbiyavanga, Mamana; Mulder, Nicola J.

    2016-01-01

    Summary: Gene Ontology (GO) semantic similarity measures are being used for biological knowledge discovery based on GO annotations by integrating biological information contained in the GO structure into data analyses. To empower users to quickly compute, manipulate and explore these measures, we introduce A-DaGO-Fun (ADaptable Gene Ontology semantic similarity-based Functional analysis). It is a portable software package integrating all known GO information content-based semantic similarity measures and relevant biological applications associated with these measures. A-DaGO-Fun has the advantage not only of handling datasets from the current high-throughput genome-wide applications, but also allowing users to choose the most relevant semantic similarity approach for their biological applications and to adapt a given module to their needs. Availability and implementation: A-DaGO-Fun is freely available to the research community at http://web.cbio.uct.ac.za/ITGOM/adagofun. It is implemented in Linux using Python under free software (GNU General Public Licence). Contact: gmazandu@cbio.uct.ac.za or Nicola.Mulder@uct.ac.za Supplementary information: Supplementary data are available at Bioinformatics online. PMID:26476781

  12. SuperB Simulation Production System

    NASA Astrophysics Data System (ADS)

    Tomassetti, L.; Bianchi, F.; Ciaschini, V.; Corvo, M.; Del Prete, D.; Di Simone, A.; Donvito, G.; Fella, A.; Franchini, P.; Giacomini, F.; Gianoli, A.; Longo, S.; Luitz, S.; Luppi, E.; Manzali, M.; Pardi, S.; Paolini, A.; Perez, A.; Rama, M.; Russo, G.; Santeramo, B.; Stroili, R.

    2012-12-01

    The SuperB asymmetric e+e- collider and detector to be built at the newly founded Nicola Cabibbo Lab will provide a uniquely sensitive probe of New Physics in the flavor sector of the Standard Model. Studying minute effects in the heavy quark and heavy lepton sectors requires a data sample of 75 ab-1 and a peak luminosity of 1036 cm-2 s-1. The SuperB Computing group is working on developing a simulation production framework capable to satisfy the experiment needs. It provides access to distributed resources in order to support both the detector design definition and its performance evaluation studies. During last year the framework has evolved from the point of view of job workflow, Grid services interfaces and technologies adoption. A complete code refactoring and sub-component language porting now permits the framework to sustain distributed production involving resources from two continents and Grid Flavors. In this paper we will report a complete description of the production system status of the art, its evolution and its integration with Grid services; in particular, we will focus on the utilization of new Grid component features as in LB and WMS version 3. Results from the last official SuperB production cycle will be reported.

  13. Atmospheric pressure plasma assisted calcination of composite submicron fibers

    NASA Astrophysics Data System (ADS)

    Medvecká, Veronika; Kováčik, Dušan; Tučeková, Zlata; Zahoranová, Anna; Černák, Mirko

    2016-08-01

    The plasma assisted calcination of composite organic/inorganic submicron fibers for the preparation of inorganic fibers in submicron scale was studied. Aluminium butoxide/polyvinylpyrrolidone fibers prepared by electrospinning were treated using low-temperature plasma generated by special type of dielectric barrier discharge, so called diffuse coplanar surface barrier discharge (DCSBD) at atmospheric pressure in ambient air, synthetic air, oxygen and nitrogen. Effect of plasma treatment on base polymer removal was investigated by using Attenuated total reflectance - Fourier transform infrared (ATR-FTIR) spectroscopy. Influence of working gas on the base polymer reduction was studied by energy-dispersive X-ray spectroscopy (EDX) and CHNS elemental analysis. Changes in fibers morphology were observed by scanning electron microscopy (SEM). High efficiency of organic template removal without any degradation of fibers was observed after plasma treatment in ambient air. Due to the low-temperature approach and short exposure time, the plasma assisted calcination is a promising alternative to the conventional thermal calcination. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  14. The Tortoise Transformation as a Prospect for Life Extension.

    PubMed

    Murphy, Timothy F

    2015-12-01

    The value of extending the human lifespan remains a key philosophical debate in bioethics. In building a case against the extension of the species-typical human life, Nicolas Agar considers the prospect of transforming human beings near the end of their lives into Galapagos tortoises, which would then live on decades longer. A central question at stake in this transformation is the persistence of human consciousness as a condition of the value of the transformation. Agar entertains the idea that consciousness could persist in some measure, but he thinks little is to be gained from the transformation because the experiences available to tortoises pale in comparison to those available to human beings. Moreover, he thinks persisting human consciousness and values would degrade over time, being remade by tortoise needs and environment. The value available in the transformation would not, then, make the additional years of life desirable. Agar's account does not, however, dispose of the tortoise transformation as a defensible preference. Some people might still want this kind of transformation for symbolic reasons, but it would probably be better that no human consciousness persist, since that consciousness would be inexpressible as such. Even so, it is not irrational to prefer various kinds of lifespan extension even if they involve significant modifications to human consciousness and values.

  15. DRAGraces: An open source pipeline to extract your GRACES data!

    NASA Astrophysics Data System (ADS)

    Chené, André-Nicolas

    2017-01-01

    Written in IDL, the DRAGraces pipeline is designed to reduce and extract data from the Gemini high-resolution spectrograph GRACES*. It is barely more than a thousand lines long, and everyone is invited to download, use and modify it as needed (https://github.com/AndreNicolasChene/DRAGRACES/releases/tag/1.0.1).This poster details how to retrieve observed GRACES data from the Gemini Observatory Archive, and explains how to run DRAGraces. It also describes the pipeline's steps, capability and performances. It is recommended to use this code and/or the other open soure pipeline, OPERA, to obtain an optimized extraction of GRACES data, before publication. It is the best way to keep control on all the reduction steps, most importantly calibration.*Gemini Remote Access to CFHT ESPaDOnS Spectrograph (GRACES) is the result of a cooperation between the Canada-France-Hawaii Telescope (CFHT), Gemini, and NRC-Herzberg (Canada). It combines the large collecting area of the Gemini North telescope with the high resolving power and high efficiency of the ESPaDOnS spectrograph at CFHT, to deliver high resolution spectroscopy across the optical region. This is achieved through a 270 m fiber optics feed from the Gemini North telescope to ESPaDOnS.

  16. The Italian Tau/charm project

    NASA Astrophysics Data System (ADS)

    Enrica Biagini, Maria

    2014-06-01

    A τ/charm Factory, an e + e- collider with very high luminosity at the 2-4.6 GeV center of mass energy, to be built on the Rome University at Tor Vergata campus, was studied by the Consortium Nicola Cabibbo Laboratory and the INFN Frascati Laboratories. This project is the natural evolution of the flagship Italian project SuperB Factory, funded by the Italian Government in 2010 with a budget that turned out to be insufficient to cover the total costs of the project. The study of rare events at the τ/charm energy was already planned as a Phase-II of SuperB [1]. This design keeps all the unique features of SuperB, including the polarization of the electron beam, with the possibility to take data in a larger energy range, with reduced accelerator dimensions and construction and operation costs. A Report on the accelerator design has been published in September 2013 [2].

  17. On the fundamental relation of laser schlieren deflectometry for temperature measurements in filamentary plasmas

    NASA Astrophysics Data System (ADS)

    Schäfer, Jan; Bonaventura, Zdeněk; Foest, Rüdiger

    2015-07-01

    Recently, laser schlieren deflectometry (LSD) had been successfully employed as a temperature measurement method to reveal the heat convection generated by micro filaments of a self-organized non-thermal atmospheric plasma jet. Based on the theory of the temperature measurements using LSD, in this work, three approaches for an application of the method are introduced: (i) a hyperbolic-like model of refractive index is applied which allows an analytical theory for the evaluation of the deflection angle to be developed, (ii) a Gaussian shape model for the filament temperature is implemented which is analyzed numerically and (iii) an experimental calibration of the laser deflection with a gas mixture of helium and argon is performed. Thus, these approaches demonstrate that a universal relation between the relative maximum temperature of the filament core (T1/T0) and a the maximum deflection angle δ1 of the laser beam can be written as T1/T0=(1 - δ1/δ0)-1, where δ0 is a parameter that is defined by the configuration of the experiment and by the assumed model for the shape of the temperature profile. Contribution to the topical issue "The 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV)", edited by Nicolas Gherardi, Ronny Brandenburg and Lars Stollenwark

  18. New Insights On The Seismotectonics of The French Central Massif and Western France

    NASA Astrophysics Data System (ADS)

    Mazabraud, Y.; Bethoux, N.; Guilbert, J.

    Nowadays, the increase of the number of seismological stations distributed through- out France, allows a re-evaluation of the regional sismotectonics, in particular by pre- cise localisation and computation of focal mecanisms even for small magnitude earth- quakes (Nicolas et al., 1998, Bethoux et al. 1998, Sue et al., 1999; Baroux et al., 2000; Rigo et al., 1999, Souriau et al.,1998). Thanks to the LDG code "FUSION", we have mixed the bulletin data available from several networks, for the French Central massif and Western France, from January 1962 to October 2001. Then, we have divided our study area in different zones: the western Central Massif, a volcanic province (Chaine des Puys), an eocene graben (Limagne), a sedimentary basin (Bassin de Paris), and also the Charente region and the Armorican massif. Using the VELEST code (Kissling et al., 1994), we have obtain for each of those areas, a minimum 1D model (Kissling et al., 1994) which allows to improve the location of the hypocenters. These new hypocenter distributions are correlated with geological structures, and it is possible to associate swarns of events to faults recognized on the field. Some new focal mecha- nisms are computed. Then, an inversion of focal solutions available for each zone al- lows to deduce the regional stress field. Those informations will allow a re-evaluation of the seismotectonics of the northern Central Massif and Western France. In particu- lar, we propose a qualitative analysis of the major faults activity.

  19. Pathology and Epidemiology of Ceruminous Gland Tumors among Endangered Santa Catalina Island Foxes (Urocyon littoralis catalinae) in the Channel Islands, USA.

    PubMed

    Vickers, T Winston; Clifford, Deana L; Garcelon, David K; King, Julie L; Duncan, Calvin L; Gaffney, Patricia M; Boyce, Walter M

    2015-01-01

    In this study, we examined the prevalence, pathology, and epidemiology of tumors in free-ranging island foxes occurring on three islands in the California Channel Islands, USA. We found a remarkably high prevalence of ceruminous gland tumors in endangered foxes (Urocyon littoralis catalinae) occurring on Santa Catalina Island (SCA)--48.9% of the dead foxes examined from 2001-2008 had tumors in their ears, and tumors were found in 52.2% of randomly-selected mature (≥ 4 years) foxes captured in 2007-2008, representing one of the highest prevalences of tumors ever documented in a wildlife population. In contrast, no tumors were detected in foxes from San Nicolas Island or San Clemente Island, although ear mites (Otodectes cynotis), a predisposing factor for ceruminous gland tumors in dogs and cats, were highly prevalent on all three islands. On SCA, otitis externa secondary to ear mite infection was highly correlated with ceruminous gland hyperplasia (CGH), and tumors were significantly associated with the severity of CGH, ceruminous gland dysplasia, and age group (older foxes). We propose a conceptual model for the formation of ceruminous gland tumors in foxes on SCA that is based on persistent, ubiquitous infection with ear mites, and an innate, over exuberant inflammatory and hyperplastic response of SCA foxes to these mites. Foxes on SCA are now opportunistically treated with acaricides in an attempt to reduce mite infections and the morbidity and mortality associated with this highly prevalent tumor.

  20. Prevalence and characterization of Salmonella spp. among marine animals in the Channel Islands, California.

    PubMed

    Stoddard, R A; DeLong, R L; Byrne, B A; Jang, S; Gulland, Frances M D

    2008-08-19

    Salmonella enterica is a zoonotic pathogen that has been isolated from free-ranging marine mammals throughout the world, with animals in the Channel Islands of California (USA) showing the highest prevalence. The goal of this study was to determine prevalence, antimicrobial sensitivity and genetic similarity using pulsed-field gel electrophoresis (PFGE) of Salmonella in several non-domestic animal species on San Miguel and San Nicolas Islands. Fecal samples were collected from 90 California sea lion Zalophus californianus pups, 30 northern elephant seal Mirounga angustirostris pups and 87 western gulls Larus occidentalis in the Channel Islands and 59 adult male sea lions in Puget Sound, WA (USA). Salmonella were isolated, identified and serotyped, followed by antimicrobial susceptibility testing and PFGE. Of the California sea lion pups that were sampled on the islands, 21% (n = 19) were positive for Salmonella, whereas no adults males in Puget Sound were positive. Of the northern elephant seal pups sampled, 87% (n = 26) were harboring Salmonella. Only 9% (n = 8) of western gulls were shedding Salmonella, with one of these gulls harboring the only antimicrobial resistant isolate. The serotypes found in these animals were Enteritidis, Montevideo, Newport, Reading, and Saint Paul. The only serotype that showed variation on PFGE was Newport. The pinnipeds of the Channel Islands harbor Salmonella at a higher prevalence than pinnipeds from other geographic areas observed in previous studies. Researchers and veterinarians should exercise increased caution when working with these animals due to the zoonotic potential of Salmonella.

  1. Decontamination of Streptococci biofilms and Bacillus cereus spores on plastic surfaces with DC and pulsed corona discharges

    NASA Astrophysics Data System (ADS)

    Koval'ová, Zuzana; Tarabová, Kataŕna; Hensel, Karol; Machala, Zdenko

    2013-02-01

    Cold air plasmas of DC and pulsed corona discharges: positive streamers and negative Trichel pulses were used for bio-decontamination of Streptococci biofilm and Bacillus cereus spores on polypropylene plastic surfaces. The reduction of bacterial population (evaluated as log10) in the biofilm on plastic surfaces treated by DC corona reached 2.4 logs with 10 min treatment time and 3.3 logs with 2 min treatment time with water spraying. The enhancement of plasma biocidal effects on the biofilm by electro-spraying of water through a hollow needle high-voltage electrode was investigated. No significant polarity effect was found with DC corona. Pulsed corona was demonstrated slightly more bactericidal for spores, especially in the negative polarity where the bacterial population reduction reached up to 2.2 logs at 10 min exposure time. Contribution to the Topical Issue "13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII)", Edited by Nicolas Gherardi, Henryca Danuta Stryczewska and Yvan Ségui.

  2. Free fatty acids degradation in grease trap purification using ozone bubbling and sonication

    NASA Astrophysics Data System (ADS)

    Piotr Kwiatkowski, Michal; Satoh, Saburoh; Fukuda, Shogo; Yamabe, Chobei; Ihara, Satoshi; Nieda, Masanori

    2013-02-01

    The oil and fat were treated at first by only ozone bubbling and it was confirmed that the collection efficiency of them became 98.4% when the aeration was used. It showed that the aeration method in a grease trap cleared the standard value of 90% and there was no worry on the oil and fat outflow from a grease trap. The characteristics of sonication process were studied for free fatty acids degradation. The free saturated fatty acids are the most hard-degradable compounds of the fats, oils and greases (FOGs) in the grease trap. The influence of various parameters such as immersion level of an ultrasound probe in the liquid and bubbling of various gases (Ar, O2, air, O3) on the sonochemical and energy efficiency of the sonication process was investigated. The most effective degradation treatment method for saturated free fatty acids was the combination of sonication and low flow rate argon bubbling. Contribution to the Topical Issue "13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII)", Edited by Nicolas Gherardi, Henryca Danuta Stryczewska and Yvan Ségui.

  3. Atmospheric pressure plasma deposition of antimicrobial coatings on non-woven textiles

    NASA Astrophysics Data System (ADS)

    Nikiforov, Anton Yu.; Deng, Xiaolong; Onyshchenko, Iuliia; Vujosevic, Danijela; Vuksanovic, Vineta; Cvelbar, Uros; De Geyter, Nathalie; Morent, Rino; Leys, Christophe

    2016-08-01

    A simple method for preparation of nanoparticle incorporated non-woven fabric with high antibacterial efficiency has been proposed based on atmospheric pressure plasma process. In this work direct current plasma jet stabilized by fast nitrogen flow was used as a plasma deposition source. Three different types of the nanoparticles (silver, copper and zinc oxide nanoparticles) were employed as antimicrobial agents. X-ray photoelectron spectroscopy (XPS) measurements have shown a positive chemical shift observed for Ag 3d 5/2 (at 368.1 eV) suggests that silver nanoparticles (AgNPs) are partly oxidized during the deposition. The surface chemistry and the antibacterial activity of the samples against Staphylococcus aureus and Escherichia coli were investigated and analyzed. It is shown that the samples loaded with nanoparticles of Ag and Cu and having the barrier layer of 10 nm characterized by almost 97% of bacterial reduction whereas the samples with ZnO nanoparticles provide 86% reduction of Staphylococcus aureus. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  4. Ozone-mist spray sterilization for pest control in agricultural management

    NASA Astrophysics Data System (ADS)

    Ebihara, Kenji; Mitsugi, Fumiaki; Ikegami, Tomoaki; Nakamura, Norihito; Hashimoto, Yukio; Yamashita, Yoshitaka; Baba, Seiji; Stryczewska, Henryka D.; Pawlat, Joanna; Teii, Shinriki; Sung, Ta-Lun

    2013-02-01

    We developed a portable ozone-mist sterilization system to exterminate pests (harmful insects) in agricultural field and greenhouse. The system is composed of an ozone generator, an ozone-mist spray and a small container of ozone gas. The ozone generator can supply highly concentrated ozone using the surface dielectric barrier discharge. Ozone-mist is produced using a developed nozzle system. We studied the effects of ozone-mist spray sterilization on insects and agricultural plants. The sterilization conditions are estimated by monitoring the behavior of aphids and observing the damage of the plants. It was shown that aphids were exterminated in 30 s without noticeable damages of the plant leaves. The reactive radicals with strong oxidation potential such as hydroxyl radical (*OH), hydroperoxide radical (*HO2), the superoxide ion radical (*O2‒) and ozonide radical ion (*O3‒) can increase the sterilization rate for aphids. Contribution to the Topical Issue "13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII)", Edited by Nicolas Gherardi, Henryca Danuta Stryczewska and Yvan Ségui.

  5. [The Gross Clinic--portrait of a pioneer].

    PubMed

    Hansen, Vibeke Cecilie Waallann; Sivertsen, Einar Andreas

    2009-03-26

    THE GROSS CLINIC: is an 1875 painting by Thomas Eakins which is counted among the world's most famous doctor's portraits. This picture became more topical when it was sold to the Philadelphia Museum of Art for 68 million USD in 2006. We here present aspects of how this picture can help to document surgical practice in the USA at the time it was made. A comparison with a later doctor's portrait, THE AGNEW CLINIC: painted by Eakins in 1889, : shows that many changes occurred during a short time in the end of the 19 th century. This is especially the case within infection prevention, anaesthesia and development of the surgical profession as such. From an art historical perspective it has been common to compare the portrait with the old masters' group portraits of surgeons in surgical theatres. The most known of these is Rembrandt's DR. NICOLAES TULP'S ANATOMY LECTURE: (1632). In our opinion it is more interesting to consider THE GROSS CLINIC: in connection with concomitant photographies of medical practice. The realistic motive for the painting was assessed as inappropriate and unsuitable for a piece of art at the time. Despite of this, Eakins himself regarded the picture as one of his best, and during the 20 th century THE GROSS CLINIC: has been increasingly acknowledged. Today, the picture is the piece of art that Thomas Eakins is mainly associated with.

  6. HOMER Economic Models - US Navy

    SciTech Connect

    Bush, Jason William; Myers, Kurt Steven

    2016-02-01

    This LETTER REPORT has been prepared by Idaho National Laboratory for US Navy NAVFAC EXWC to support in testing pre-commercial SIREN (Simulated Integration of Renewable Energy Networks) computer software models. In the logistics mode SIREN software simulates the combination of renewable power sources (solar arrays, wind turbines, and energy storage systems) in supplying an electrical demand. NAVFAC EXWC will create SIREN software logistics models of existing or planned renewable energy projects at five Navy locations (San Nicolas Island, AUTEC, New London, & China Lake), and INL will deliver additional HOMER computer models for comparative analysis. In the transient mode SIREN simulates the short time-scale variation of electrical parameters when a power outage or other destabilizing event occurs. In the HOMER model, a variety of inputs are entered such as location coordinates, Generators, PV arrays, Wind Turbines, Batteries, Converters, Grid costs/usage, Solar resources, Wind resources, Temperatures, Fuels, and Electric Loads. HOMER's optimization and sensitivity analysis algorithms then evaluate the economic and technical feasibility of these technology options and account for variations in technology costs, electric load, and energy resource availability. The Navy can then use HOMER’s optimization and sensitivity results to compare to those of the SIREN model. The U.S. Department of Energy (DOE) Idaho National Laboratory (INL) possesses unique expertise and experience in the software, hardware, and systems design for the integration of renewable energy into the electrical grid. NAVFAC EXWC will draw upon this expertise to complete mission requirements.

  7. [Mural paintings of Jean Coquet at the Desgenette Hospital in Lyon].

    PubMed

    Chauvin, Frédéric; Fischer, Louis-Paul

    2010-01-01

    René Nicolas Dufriche Desgenettes (1762-1837) became famous through two historical events: the first and most famous one is where he proved his courage by inoculating himself with the plague during the Syrian campaign in 1799; the second one, rarely represented in paintings, happened during the Russian retreat in 1812 when he was freed thanks to his reputation. Two wide fresco paintings facing each other in the hall of Desgenettes, a hospital built during World War Two, are witnesses of these two major events. Jean Coquet (1907-1990), a decorator, painter and glassblower, who worked at the Beaux-Arts School of Lyon, first as a decoration teacher than as its director, painted these two works of art. In 1946, he inserted them into an ornamental group constituted of ironworks, furniture, stained glass and ceramics. Two paintings from Antoine-Jean Gros (1771-1835) inspired these works: Bonaparte visiting the plague-stricken of Jaffa (1804) and Napoleon on the battlefield of Eylau (1808). With their academic composition and daring stylization those two frescoes represent in a modern and original way Desgenettes' life style, an archetype of what the military doctor is.

  8. Reduced disease in black abalone following mass mortality: Phage therapy and natural selection

    USGS Publications Warehouse

    Vanblaricom, Glenn R.

    2014-01-01

    Black abalone, Haliotis cracherodii, populations along the NE Pacific ocean have declined due to the rickettsial disease withering syndrome (WS). Natural recovery on San Nicolas Island (SNI) of Southern California suggested the development of resistance in island populations. Experimental challenges in one treatment demonstrated that progeny of disease-selected black abalone from SNI survived better than did those from naïve black abalone from Carmel Point in mainland coastal central California. Unexpectedly, the presence of a newly observed bacteriophage infecting the WS rickettsia (WS-RLO) had strong effects on the survival of infected abalone. Specifically, presence of phage-infected RLO (RLOv) reduced the host response to infection, RLO infection loads, and associated mortality. These data suggest that the black abalone: WS-RLO relationship is evolving through dual host mechanisms of resistance to RLO infection in the digestive gland via tolerance to infection in the primary target tissue (the post-esophagus) coupled with reduced pathogenicity of the WS-RLO by phage infection, which effectively reduces the infection load in the primary target tissue by half. Sea surface temperature patterns off southern California, associated with a recent hiatus in global-scale ocean warming, do not appear to be a sufficient explanation for survival patterns in SNI black abalone. These data highlight the potential for natural recovery of abalone populations over time and that further understanding of mechanisms governing host–parasite relationships will better enable us to manage declining populations.

  9. Fragaria: a genus with deep historical roots and ripe for evolutionary and ecological insights.

    PubMed

    Liston, Aaron; Cronn, Richard; Ashman, Tia-Lynn

    2014-10-01

    The cultivated strawberry, Fragaria ×ananassa, is one of the youngest domesticated plants. Its 18th century origin via hybridization in Europe between the North American F. virginiana and the South American F. chiloensis was documented by the botanist Antoine Nicolas Duchesne. His 1766 "Natural History of Strawberries" is an extraordinary work that integrates fundamental discoveries on the biology, ecology, and phylogeny of Fragaria with applied information on cultivation and ethnobotanical uses, serving as an inspiration for current research in the genus. Fragaria species exhibit the full range of sexual systems in the gynodioecy pathway from hermaphroditism to dioecy (and back again), as well as variation in self-compatibility, and evidence of sex chromosomes with female heterogamety. The genus is also characterized by interspecific hybridization and polyploidy, with a natural range of ploidy levels from diploids to decaploids. This biological diversity, combined with the availability of genomic resources and the ease of growing and experimenting with the plants, makes Fragaria a very attractive system for ecological and evolutionary genomics. The goal of this review is to introduce Fragaria as a model genus and to provide a roadmap for future integrative research. These research directions will deepen our understanding of the ecological and evolutionary context that shaped the ancestors of the cultivated strawberry, not only providing information that can be applied to efforts to shape the future of this important fruit crop but also our understanding of key transitions in plant evolution.

  10. Steps of glucocorticoid action in normal and diabetic rat placenta.

    PubMed

    Heller, C L; Weisenberg, L S; Ortí, E; De Nicola, A F

    1988-07-01

    This investigation examined the effects of Streptozotocin diabetes in pregnancy on several parameters of glucocorticoid action in the rat placenta. Pregnant diabetic rats showed reduced body weight, increased adrenal weight and serum corticosterone concentrations. Glucocorticoid receptors in placental cytosol of labyrinthine zone, measured in the absence of MoO4Na2 were similar in control and diabetic rats, but after addition of MoO4Na2 receptor number were moderately, but significantly reduced in diabetic placentas (P less than 0.01). No changes in affinity were detected in saturation analysis. Furthermore, transformation of the receptor assessed by its capacity for binding to DNA-cellulose, was enhanced in diabetic animals, suggesting increased efficiency of the receptor-bound hormone. Since the function of the glucocorticoid receptor of rat placenta may be the inhibition of local progesterone production (Heller and De Nicola, J. steroid Biochem. 19 (1983) 1339-1343), we determined progesterone synthesis in vitro and found that diabetic placentas synthesized significantly less progesterone than control tissue (P less than 0.05). Lastly, we found that the metabolism of corticosterone to 11-dehydrocorticosterone, while declining in control placentas as pregnancy advanced, it was sustained in diabetic pregnancy. It is suggested that diabetic rat placentas showed increased activity towards the glucocorticoid receptor, resulting in reduction in progesterone synthesis and sustained catabolism of corticosterone. The latter may possibly constitute a compensatory mechanism to protect the fetal compartment from high levels of maternal glucocorticoids.

  11. High Pressure Calibration at High Temperatures in the Diamond Anvil Cell Using Cubic Boron Nitride

    NASA Astrophysics Data System (ADS)

    Goncharov, A. F.; Crowhurst, J. C.

    2006-12-01

    The equation of state (EOS) and pressure dependence of the transverse optical (TO) Raman-active mode of cubic boron nitride (cBN) are proposed for pressure calibration in the diamond anvil cell (DAC) at high temperatures. We determined the EOS and the pressure dependence of the TO mode of cBN in the laser heated DAC up to 70 GPa and 3300 K, and cross-checked the results with ambient pressure data, theoretical density functional calculations, and empirical relations. Moreover, the thermal EOS of Ir determined in the course of the same experiment was found to be similarly consistent. The proposed high temperature pressure scale may be further improved on the basis of simultaneous measurements of density and sound velocities at high P-T conditions, which would provide an independent pressure determination. This study is in progress and will be reported at the Meeting. We thank John K. Dewhurst, Sangeeta Sharma, Chrystele Sanloup, Eugene Gregoryanz for their contribution to this study. We acknowledge the European Synchrotron Radiation Facility for provision of synchrotron radiation facilities and we would like to thank Nicola Guignot and Mohamed Mezour for assistance with the XRD measurements.

  12. Improved Universal No-Hair Relations for Neutron Stars

    NASA Astrophysics Data System (ADS)

    Majumder, Barun; Yagi, Kent; Yunes, Nicolas

    2016-03-01

    The exterior gravitational field of an astrophysical body can be characterized by its multipole moments. No-hair theorems for black holes state that the exterior gravitational field can be completely described in terms of their mass and spin angular momentum. Similar no-hair like relations have been recently found for neutron stars which are approximately independent of the internal structure of the star. Missions like NICER and LOFT will observe the pulse profiles of millisecond pulsars and thermonuclear bursters. The equation-of-state (EoS) independent relations may break degeneracies among the relevant observables in the modeling of X-ray pulse and atomic line profiles. The amount of EoS independence of these approximately universal relations depends on how one adimensionalizes the multipole moments of the star with stellar mass, spin and radius. We show that for slowly-rotating neutron stars in both non-relativistic limit and full General Relativity, the optimal normalization of the multipole moments exist that minimizes the EoS dependence in the universal relations. The relations among the moment of inertia and higher order moments can be improved from the original ones approximately by a factor of two. Nicolas Yunes acknowledges support from NSF CAREER Award PHY-1250636. Barun Majumder is supported by the Fulbright-Nehru Postdoctoral Research Fellowship.

  13. Forces driven by morphogenesis modulate Twist Expression to determine Anterior Mid-gut Differentiation in Drosophila embryos

    NASA Astrophysics Data System (ADS)

    Farge, Emmanuel

    2008-03-01

    By combining magnetic tweezers to in vivo laser ablation, we locally manipulate Drosophila embryonic tissues with physiologically relevant forces. We demonstrate that high level of Twist expression in the stomodeal primordium is mechanically induced in response to compression by the 60±20 nN force developed during germ-band extension (GBE). We find that this force triggers the junctional release and nuclear translocation of Armadillo involved in Twist mechanical induction in the stomodeum in a Src42A dependent way. Finally, stomodeal-specific RNAi-mediated silencing of Twist during compression impairs the differentiation of midgut cells, as revealed by strong defects in Dve expression and abnormal larval lethality. Thus, mechanical induction of Twist overexpression in stomodeal cells is necessary for subsequent midgut differentiation. In collaboration with Nicolas Desprat, Willy Supatto, and Philippe-Alexandre Pouille, MGDET, UMR168 CNRS, Institut Curie11 rue Pierre et Marie Curie, F-75005, Paris, France; and Emmanuel Beaurepaire, LOB, Ecole Polytechnique, CNRS and INSERM U 696, 91128 Palaiseau, France.

  14. The plasma footprint of an atmospheric pressure plasma jet on a flat polymer substrate and its relation to surface treatment

    NASA Astrophysics Data System (ADS)

    Onyshchenko, Iuliia; Nikiforov, Anton Yu.; De Geyter, Nathalie; Morent, Rino

    2016-08-01

    The aim of this work is to show the correlation between the plasma propagation in the footprint of an atmospheric pressure plasma jet on a flat polymer surface and the plasma treatment impact on the polymer properties. An argon plasma jet working in open air is used as plasma source, while PET thin films are used a substrates for plasma treatment. Light emission photographs are taken with an ICCD camera to have a close look at the generated structures in the plasma jet footprint on the surface. Water contact angle (WCA) measurement and X-ray photoelectron spectroscopy (XPS) analysis are also performed to obtain information about the impact of the plasma treatment on the PET surface characteristics. A variation in ICCD camera gate duration (1 µs, 100 µs, 50 ms) results in the photographs of the different plasma structures occurring during the plasma propagation on the flat PET surface. Contact angle measurements provide results on improvement of the PET hydrophilic character, while XPS analysis shows the distribution of atomic elements on the treated substrate surface. Light emission images help explaining the obtained WCA and XPS results. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  15. The Hetu'u Global Network: Measuring the Distance to the Sun with the Transit of Venus

    NASA Astrophysics Data System (ADS)

    Rodriguez, David; Faherty, J.

    2013-01-01

    In the spirit of historic astronomical endeavors, we invited school groups across the globe to collaborate in a solar distance measurement using the 2012 transit of Venus. In total, our group (stationed at Easter Island, Chile) recruited 19 school groups spread over 6 continents and 10 countries to participate in our Hetu’u Global Network. Applying the methods of French astronomer Joseph-Nicolas Delisle, we used individual second and third Venus-Sun contact times to calculate the distance to the Sun. Ten of the sites in our network had amiable weather; 8 of which measured second contact and 5 of which measured third contact leading to consistent solar distance measurements of 152+/-30 million km and 163+/-30 million km respectively. The distance to the Sun at the time of the transit was 152.25 million km; therefore, our measurements are also consistent within 1-sigma of the known value. The goal of our international school group network was to inspire the next generation of scientists using the excitement and accessibility of such a rare astronomical event. In the process, we connected hundreds of participating students representing a diverse, multi-cultural group with differing political, economic, and racial backgrounds.

  16. Spatial and temporal variation in the seroprevalence of canine heartworm antigen in the island fox.

    PubMed

    Roemer, G W; Coonan, T J; Garcelon, D K; Starbird, C H; McCall, J W

    2000-10-01

    Island foxes (Urocyon littoralis) are endemic to six of the eight California Channel Islands (USA). The island fox is classified as a threatened species by the State of California, and recently three of the six subspecies have experienced abrupt population declines. As part of a continuing effort to determine the cause of the declines, we tested island fox serum samples collected in 1988 (n = 176) and 1997-98 (n = 156) over the entire geographic range of the species for seroprevalence of canine heartworm (Dirofilaria immitis) antigen. Using a commercially available enzyme-linked immunosorbent assay (PetChek, Idexx Laboratories, Westbrook, Maine, USA) we detected heartworm antigen in four of the six populations of island foxes. On San Miguel and Santa Rosa Islands, seroprevalence in adult foxes was >85% (n = 62) in 1988 and increased to 100% (n = 24) in 1997-98. On Santa Cruz Island, seroprevalence in adult foxes decreased from 83% (n = 30) to 58% (n = 26), whereas on San Nicolas Island, seroprevalence increased from 25% (n = 32) to 77% (n = 30) during the same period. All of the pups assayed (n = 33) were seronegative. The seroprevalences of heartworm reported herein for the four populations of island foxes are the highest yet reported for a fox species. However, additional demographic data reported elsewhere suggests that heartworm has not been a major factor in the recent declines of island fox populations.

  17. Systemic Amyloid A Amyloidosis in Island Foxes (Urocyon littoralis): Severity and Risk Factors.

    PubMed

    Gaffney, P M; Witte, C; Clifford, D L; Imai, D M; O'Brien, T D; Trejo, M; Liberta, F; Annamalai, K; Fändrich, M; Masliah, E; Munson, L; Sigurdson, C J

    2016-05-01

    Systemic amyloid A (AA) amyloidosis is highly prevalent (34%) in endangered island foxes (Urocyon littoralis) and poses a risk to species recovery. Although elevated serum AA (SAA) from prolonged or recurrent inflammation predisposes to AA amyloidosis, additional risk factors are poorly understood. Here we define the severity of glomerular and medullary renal amyloid and identify risk factors for AA amyloidosis in 321 island foxes necropsied from 1987 through 2010. In affected kidneys, amyloid more commonly accumulated in the medullary interstitium than in the glomeruli (98% [n= 78 of 80] vs 56% [n= 45], respectively;P< .0001), and medullary deposition was more commonly severe (19% [n= 20 of 105]) as compared with glomeruli (7% [n= 7];P= .01). Univariate odds ratios (ORs) of severe renal AA amyloidosis were greater for short- and long-term captive foxes as compared with free-ranging foxes (ORs = 3.2, 3.7, respectively; overall P= .05) and for females as compared with males (OR = 2.9;P= .05). Multivariable logistic regression revealed that independent risk factors for amyloid development were increasing age class (OR = 3.8;P< .0001), San Clemente Island subspecies versus San Nicolas Island subspecies (OR = 5.3;P= .0003), captivity (OR = 5.1;P= .0001), and nephritis (OR = 2.3;P= .01). The increased risk associated with the San Clemente subspecies or captivity suggests roles for genetic as well as exogenous risk factors in the development of AA amyloidosis.

  18. Experimental study of pulsed corona discharge in air at high pressures

    NASA Astrophysics Data System (ADS)

    Lin, Yunghsu; Singleton, Dan; Sanders, Jason; Kuthi, Andras; Gundersen, Martin A.

    2012-10-01

    Understanding of the dynamics of nanosecond scale pulse discharges in air at multiatmospheric pressure is essential for the development of transient plasma enhanced combustion in internal combustion engines. Here we report the result of our experimental investigation of cathode-directed streamer discharges in synthetic air at pressures ranging from 1 to 20 bar. Two pulse generators with maximum pulse amplitudes of 50 kV and 65 kV, pulse width of approximately 12 ns and 85 ns and pulse rise times of 5 ns and 50 ns are used to generate streamers. The electrodes are coaxial with various radial gaps up to 11.75 mm. The discharge chamber is evacuated and backfilled with synthetic dry air at room temperature. Optical data is obtained from PI-MAX 3 ICCD camera with 3 ns gate width. The streamer propagation velocity variation with applied voltage, different pressures and reduced electric field, E/P, will be shown. Preliminary results indicate that the (pd) similarity law is violated at high pressures in agreement with other recent experiments [1].[4pt] [1] ``Nanosecond Scale Discharge Dynamics in High Pressure Air,'' Pierre Tardiveau, Nicolas Moreau, Francois Jorand, Christian Postel, St'ephane Pasquiers, and Pierre Vervisch, IEEE Trans. on Plasma Sci., Vol. 36, No. 4, 2008.

  19. Enhancement of carbon-steel peel adhesion to rubber blend using atmospheric pressure plasma

    NASA Astrophysics Data System (ADS)

    Kršková, Jana; Skácelová, Dana; Kováčik, Dušan; Ráhel', Jozef; Pret'o, Jozef; Černák, Mirko

    2016-08-01

    The surface of carbon-steel plates was modified by non-equilibrium plasma of diffuse coplanar surface barrier discharge (DCSBD) in order to improve the adhesive properties to the NR (natural rubber) green rubber compound. The effect of different treatment times as well as different input power and frequency of supplied high voltage was investigated. The samples were characterized using contact angle and surface free energy measurement, measurement of adhesive properties, scanning electron microscopy (SEM) and atomic force microscopy (AFM). Surface chemical composition was studied by energy-dispersive X-ray spectroscopy (EDX). Significant increase in wettability was observed even after 2 s of plasma exposure. The surface modification was confirmed also by peel test, where the best results were obtained for 6 s of plasma treatment. In addition the ageing effect was studied to investigate the durability of modification, which is crucial for the industrial applications. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  20. Aspects of Quantum Theory

    NASA Astrophysics Data System (ADS)

    Salam, Abdus; Wigner, E. P.

    2010-03-01

    Preface; List of contributors; Bibliography of P. A. M. Dirac; 1. Dirac in Cambridge R. J. Eden and J. C. Polkinghorne; 2. Travels with Dirac in the Rockies J. H. Van Vleck; 3. 'The golden age of theoretical physics': P. A. M. Dirac's scientific work from 1924 to 1933 Jagdish Mehra; 4. Foundation of quantum field theory Res Jost; 5. The early history of the theory of electron: 1897-1947 A. Pais; 6. The Dirac equation A. S. Wightman; 7. Fermi-Dirac statistics Rudolph Peierls; 8. Indefinite metric in state space W. Heisenberg; 9. On bras and kets J. M. Jauch; 10. The Poisson bracket C. Lanczos; 11. La 'fonction' et les noyaux L. Schwartz; 12. On the Dirac magnetic poles Edoardo Amadli and Nicola Cabibbo; 13. The fundamental constants and their time variation Freeman J. Dyson; 14. On the time-energy uncertainty relation Eugene P. Wigner; 15. The path-integral quantisation of gravity Abdus Salam and J. Strathdee; Index; Plates.

  1. [The difficult start of nephrology in Rome].

    PubMed

    Cagli, V; Cinotti, G A

    2009-01-01

    Nephrology in Rome began in the 1960s with the arrival of Ernico Fiaschi in the wake of Cataldo Cassano at the Institute of Medical Pathology (later on Clinica Medica II). A group of doctors interested in nephrology was set up, with among them Giulio A. Cinotti, who was to become full professor of nephrology at the University of Rome ''La Sapienza'' in 1980. By the end of the 1960s, the renal transplant activity had become an important asset at the Institute of Surgical Pathology (later on Clinica Chirurgica II) thanks to Paride Stefanini. A chair of surgical nephrology was instituted at the Urology Clinics of Ulrico Bracci; the chair was first held by Nicola Cerulli, who developed an intensive hemodialysis program. Around the same time, the Center for the Research and Treatment of Arterial Hypertension and Kidney Diseases became operational at the hospitals of Rome (under the responsibility of Vito Cagli at the Policlinico Umberto I), while a nephrology and dialysis unit, directed by Giancarlo Ruggieri, was set up at the San Giacomo Hospital. Many nephrology-related ''cultural'' activities started to be undertaken thanks to the ''Gruppo Laziale di Nefrologia Medica e Chirurgica'' founded by Drs Cagli, Cerulli, and Cinotti. Two national congresses were organized by Giulio Cinotti in 1979 (Fiuggi) and 1992 (Rome).

  2. Atmospheric pressure glow discharge generated in nitrogen-methane gas mixture: PTR-MS analyzes of the exhaust gas

    NASA Astrophysics Data System (ADS)

    Torokova, Lucie; Mazankova, Vera; Krcma, Frantisek; Mason, Nigel J.; Matejcik, Stefan

    2015-07-01

    This paper reports the results of an extensive study of with the in situ mass spectrometry analysis of gaseous phase species produced by an atmospheric plasma glow discharge in N2-CH4 gas mixtures (with methane concentrations ranging from 1% to 4%). The products are studied using proton-transfer-reaction mass spectrometry (PTR-MS). HCN and CH3CN are identified as the main gaseous products. Hydrazine, methanimine, methyldiazene, ethylamine, cyclohexadiene, pyrazineacetylene, ethylene, propyne and propene are identified as minor compounds. All the detected compounds and their relative abundances are determined with respect to the experimental conditions (gas composition and applied power). The same molecules were observed by the Cassini-Huygens probe in Titan's atmosphere (which has same N2-CH4 gas mixtures). Such, experiments show that the formation of such complex organics in atmospheres containing C, N and H, like that of Titan, could be a source of prebiotic molecules. Contribution to the topical issue "The 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV)", edited by Nicolas Gherardi, Ronny Brandenburg and Lars Stollenwark

  3. Salinization processes in a coastal aquifer system (Siracusa, Italy)

    NASA Astrophysics Data System (ADS)

    Rapti Caputo, D.; Vaccaro, C.

    2003-04-01

    The Syracuse area (Southeastern Sicily, Italy) is famous since ancient times for its natural springs, like Aretusa and Ciane, as well as for the hydraulic management handicraft know from 480 B.C. Unfortunately, the recent hyper-exploitation of the underground water resources and the concomitant decrease of the precipitations caused a general lowering of the piezometric level of the aquifers therefore enhancing the intrusion of marine salty waters. In the present work, numerous hydrochemical parameters have been investigated, among which the pH, the total dissolved solid, the electric conductivity, the temperature and the concentration of Ca, Mg, Na, K, HCO3, Cl and SO4. The data have been collected from five well fields located at different distances from the coast. Analyses have been performed in order to understand the relationships between the intense exploitation and the geochemical characteristics of the underground water resources. Our results obtained by applying classical geochemical methodologies integrated with techniques of multivariate statistics emphasise, firstly, the predominance of the Ca-HCO3 hydrochemical facies. Secondly, we could determine the evolution of mixing phenomena between salty and fresh waters approaching the coast line (San Nicola field). This behaviour is mainly associated to the pumping increase. Obviously, this intrusive process characterised by chlorides concentrations larger than 2000 mg/l affects all the coastal natural environment and generates severe problems to the entire aqueduct network.

  4. Antisomatostatin-induced growth acceleration in chinook salmon (Oncorhynchus tshawytscha).

    PubMed

    Mayer, I; McLean, E; Kieffer, T J; Souza, L M; Donaldson, E M

    1994-10-01

    Since somatostatin (SRIF) inhibits the release of growth hormone (GH), its immunoneutralization may provide an alternative to GH therapy as a means of enhancing somatic growth in fish. The present study examined the feasibility of accelerating growth in juvenile chinook salmon by means of antiSRIF administration. Yearling salmon of Nicola River stock (BC, Canada) were injected intraperitoneally every 5 days, for a total of 40 days, with either SRIF (1 μg g-1 body wt.), antiSRIF (SOMA-10, 1 μg g(-1)), recombinant bovine GH (rbGH, 2.5 μg g(-1)), recombinant porcine GH (rpGH, 2.5 μg g(-1)) or saline (controls). No significant differences were observed in length, weight or final condition factor (k) between the SRIF-treated and control fish over the experimental period. However, the fish treated with the antiSRIF were significantly (p ≤ 0.05) longer and heavier than the control salmon after 25 and 30 days respectively. Furthermore, antiSRIF treatment caused a lowering in k when compared to the control salmon. Fish injected with rbGH or rpGH were significantly longer and heavier than all other groups (p ≤ 0.05), after only 5 days. GH treated groups also returned higher k when compared against all other treatments (p ≤ 0.05). No differences were observed in growth between the two rGH treatments over the experimental period.

  5. On the study of the mechanical properties of Mo-B-C coatings

    NASA Astrophysics Data System (ADS)

    Zábranský, Lukáš; Buršíková, Vilma; Souček, Pavel; Vašina, Petr; Buršík, Jiří

    2016-08-01

    Mo2BC thin films show a favourable combination of high stiffness, hardness and elastic modulus together with moderate ductility. In this study we focused on the comparison of mechanical properties of Mo-B-C thin films with different structures (nanocrystalline or amorphous). The thin films were deposited on steel, hard metal and silicon substrates using DC magnetron sputtering. The mechanical properties of Mo-B-C films were studied using indentation techniques under both quasistatic and dynamic conditions using a wide range of loads from 50 μN up to 1 N. The results showed that even amorphous Mo-B-C thin films had high hardness of 19.5 ± 0.5 GPa and elastic modulus of 276 ± 5 GPa. Their hardness is comparable with the common amorphous diamond-like carbon coatings. Moreover, their fracture toughness is significantly higher. The results of mechanical tests were correlated with microstructure observations carried out using scanning and transmission electron microscopy. The images of the deformed area under the residual indentation imprints showed no cracking even after high loads or after indentation with sharp cube corner indenter. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  6. [The mineralogical and petrographical work of the pharmacists in the Museum].

    PubMed

    Kaspar, Caroline; Jaussaud, Philippe

    2005-01-01

    Three famous pharmacists were working in the Muséum national d'histoire naturelle in Paris, in the field of earth sciences: Louis Nicolas Vauquelin (1763-1829), André Laugier (1770-1832) and Alfred Lacroix (1863-1948). Vauquelin, professor of Chemical arts, established the chemical composition of numerous minerals, which led him to the discovery of new chemical elements. He also took a hand in demonstrating the extra-terrestrial origin of meteorites. Laugier, professor of General chemistry, was an admitted expert in the analytical field of these rocks. Lacroix, who held during more than forty years the chair of Mineralogy in the Museum, carried out major scientific work. This field working naturalist who was also famous vulcanologist placed his studies of the mineral species into a petrographical context. He described numerous new minerals, took an interest in their origin and classification of the volcanic rocks, as well as in contact metamorphism. In other respects, he increased the collections in the Museum (minerals, rocks, meteorites). The works of Vauquelin, Laugier and Lacroix contributed to advance those begun by some scientists of the Jardin du Roi, as Buffon or the Rouelle brothers before the French Revolution.

  7. A tomographic visualization of electric discharge sound fields in atmospheric pressure plasma using laser diffraction

    NASA Astrophysics Data System (ADS)

    Nakamiya, Toshiyuki; Mitsugi, Fumiaki; Iwasaki, Yoichiro; Ikegami, Tomoaki; Tsuda, Ryoichi; Sonoda, Yoshito; Danuta Stryczewska, Henryka

    2013-02-01

    The phase modulation of transparent gas can be detected using Fraunhofer diffraction technique, which we call optical wave microphone (OWM). The OWM is suitable for the detection of sonic wave from audible sound to ultrasonic wave. Because this technique has no influence on sound field or electric field during the measurement, we have applied it to the sound detection for the electric discharges. There is almost no research paper that uses the discharge sound to examine the electrical discharge phenomenon. Two-dimensional visualization of the sound field using the OWM is also possible when the computerized tomography (CT) is combined. In this work, coplanar dielectric barrier discharge sin different gases of Ar, N2, He were characterized via the OWM as well as applied voltage and discharge current. This is the first report to investigate the influence of the type of the atmospheric gas on the two-dimensional sound field distribution for the coplanar dielectric barrier discharge using the OWM with CT. Contribution to the Topical Issue "13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII)", Edited by Nicolas Gherardi, Henryca Danuta Stryczewska and Yvan Ségui.

  8. Atmospheric pressure low-power microwave microplasma source for deactivation of microorganisms

    NASA Astrophysics Data System (ADS)

    Mizeraczyk, Jerzy; Dors, Mirosław; Jasiński, Mariusz; Hrycak, Bartosz; Czylkowski, Dariusz

    2013-02-01

    This work was aimed at experimental investigations of deactivation of different types of microorganisms by using atmospheric pressure low-temperature microwave microplasma source (MmPS). The MmPS was operated at standard microwave frequency of 2.45 GHz. Its main advantages are simple and cheap construction, portability and possibility of penetrating into small cavities. The microplasma deactivation concerned two types of bacteria (Escherichia coli, Bacillus subtilis) and one fungus (Aspergillus niger). The quality as well as quantity tests were performed. The influence of the microorganism type, oxygen concentration, absorbed microwave power, microplasma treatment time and MmPS distance from the treated sample on the microorganism deactivation efficiency was investigated. All experiments were performed for Ar microplasma and Ar/O2 microplasma with up to 3% of O2. Absorbed microwave power was up to 50 W. The Ar flow rate was up to 10 L/min. The sample treatment time was up to 10 s. Contribution to the Topical Issue "13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII)", Edited by Nicolas Gherardi, Henryca Danuta Stryczewska and Yvan Ségui.

  9. Dreaming woman: Image, place, and the aesthetics of exile.

    PubMed

    Greenspan, Rachel

    2017-03-14

    Looking closely at an Argentine dream interpretation column published in a popular women's magazine from 1948 to 1951, this article examines the role of the dream image in shaping psychoanalytic discourse on femininity and national identity. The column, 'Psychoanalysis Will Help You,' emerged during Juan Domingo Perón's first presidency, featuring verbal interpretations written under the pen name 'Richard Rest,' as well as surreal photomontages by Grete Stern, a German-born, Bauhaus-trained photographer living in exile since 1936. While the column's Jungian text encourages readers' adaptation to the external reality of their social situation, Stern's droll images emphasize the disjuncture between subject and environment, exposing tensions between the experience of exile and the Peronist mission to consolidate an Argentine national identity. Experimenting formally with European avant-garde techniques, Stern presents femininity and nation as conflictive imaginary configurations. This theme resurfaces at the 2013 Venice Biennale, where Nicola Costantino's multimedia installation Eva - Argentina: A Contemporary Metaphor was exhibited alongside Carl Jung's Red Book. Formal contrasts between Stern's use of photomontage, Costantino's projection technique, and Jung's theory of mandala symbolism indicate the divergent ways in which their artwork posits the therapeutic function of the dream image, as well as the role of aesthetic production in psychoanalytic care.

  10. Aircraft/island/ship/satellite intercomparison: Preliminary results from July 16, 1987

    NASA Technical Reports Server (NTRS)

    Hanson, Howard P.; Davidson, Ken; Gerber, Herman; Khalsa, Siri Jodha Singh; Kloesel, Kevin A.; Schwiesow, Ronald; Snider, Jack B.; Wielicki, Bruce M.; Wylie, Donald P.

    1990-01-01

    The First ISCCP Regional Experiment (FIRE) objective of validating and improving satellite algorithms for inferring cloud properties from satellite radiances was one of the central motivating factors in the design of the specific field experimental strategies used in the July, 1987 marine stratocumulus intensive field observations (IFO). The in situ measuring platforms were deployed to take maximum advantage of redundant measurements (for intercomparison of the in situ sensors) and to provide optimal coverage within satellite images. One of the most ambitious of these strategies was the attempt to coordinate measurements from San Nicolas Island (SNI), the R/V Pt. Sur, the meteorological aircraft, and the satellites. For the most part, this attempt was frustrated by flight restrictions in the vicinity of SNI. The exception was the mission of July 16, 1987, which achieved remarkable success in the coordination of the platforms. This presentation concerns operations conducted by the National Center for Atmospheric Research (NCAR) Electra and how data from the Electra can be integrated with and compared to data from the Pt. Sur, SNI, and the satellites. The focus is on the large-scale, integrated picture of the conditions on July 16 from the perspective of the Electra's flight operations.

  11. Hearing the irrational: music and the development of the modern concept of number.

    PubMed

    Pesic, Peter

    2010-09-01

    Because the modern concept of number emerged within a quadrivium that included music alongside arithmetic, geometry, and astronomy, musical considerations affected mathematical developments. Michael Stifel embedded the then-paradoxical term "irrational numbers" (numerici irrationales) in a musical context (1544), though his philosophical aversion to the "cloud of infinity" surrounding such numbers finally outweighed his musical arguments in their favor. Girolamo Cardano gave the same status to irrational and rational quantities in his algebra (1545), for which his contemporaneous work on music suggested parallels and empirical examples. Nicola Vicentino's attempt to revive ancient "enharmonic" music (1555) required and hence defended the use of "irrational proportions" (proportiones inrationales) as if they were numbers. These developments emerged in richly interactive social and cultural milieus whose participants interwove musical and mathematical interests so closely that their intense controversies about ancient Greek music had repercussions for mathematics as well. The musical interests of Stifel, Cardano, and Vicentino influenced their respective treatments of "irrational numbers." Practical as well as theoretical music both invited and opened the way for the recognition of a radically new concept of number, even in the teeth of paradox.

  12. Generation of high pressure homogeneous dielectric barrier discharge in air

    NASA Astrophysics Data System (ADS)

    Osawa, Naoki; Takashi, Ami; Yoshioka, Yoshio; Hanaoka, Ryoichi

    2013-02-01

    We succeeded in generating an atmospheric pressure Townsend discharge (APTD) in air by using a simple DBD device that consists of alumina barriers and plane electrodes. So far, we applied the APTD to an ozonizer and found that the ozone generation efficiency was higher by the APTD mode than by the conventional DBD mode in larger specific input energy region. It is well known that an operation under an optimized high gas pressure is advantageous for efficient ozone generation from air. In this paper, we investigated whether the Townsend discharge (TD) in dry air in high pressure up to 0.17 MPa can be generated or not. From the observation results of current waveforms and discharge photographs, we found that (1) the discharge currents flow continuously and have only one peak in every half cycle in all gas pressure and (2) filamentary discharges are not recognized between barriers in all gas pressure. These features completely agree with the features of the APTD we reported. Therefore, we concluded that our TD can be generated even in dry air in the pressure range of 0.1 and 0.17 MPa. Contribution to the Topical Issue "13th International Symposium on High Pressure Low Temperature Plasma Chemistry (Hakone XIII)", Edited by Nicolas Gherardi, Henryca Danuta Stryczewska and Yvan Ségui.

  13. Vintilă Ciocâlteu (1891–1947): physician, biochemist, poet and professor

    PubMed Central

    POPESCU, MIHAI; NICOLESCU, RALUCA

    2013-01-01

    Among the ambassadors of Romanian science and culture, we include the doctor Vintilă Ciocâlteu. Along with Victor Babeş, Nicolae Paulescu and George Emil Palade, Vintilă Ciocâlteu contributed further, by the reagent which he prepared together with Otto Folin, to the completion and deepening of the knowledge of cell biology within the medical agricultural, horticultural research or industrial chemistry. A multi-faceted personality, V. Ciocâlteu was also a remarkable poet, who entered into an unjust and hopeless conflict with the communist regime. Just like many of his compatriots, he was deleted from medical or literature books, was expelled from the department of Medicine in Bucharest and was charged with offences that he did not commit. But his name could not be deleted from the laboratory methods which used - the Reagent Folin-Ciocâlteu! Today, doctor Vintilă Ciocâlteu continues to promote the fame of the Romanian medicine in the world. PMID:26527940

  14. Microbiological Spoilage of Canned Foods

    NASA Astrophysics Data System (ADS)

    Evancho, George M.; Tortorelli, Suzanne; Scott, Virginia N.

    Nicolas Appert (1749-1841) developed the first commercial process that kept foods from spoiling in response to an offer from the French government for a method of preserving food for use by the army and navy. Appert, a confectioner and chef, began to experiment in his workshop in Massy, near Paris, but since little was known about bacteriology and the causes of spoilage (Louis Pasteur had yet to formulate the germ theory), much of his work involved trial and error. In 1810, after years of experimenting, he was awarded the prize of 12,000 francs for his method of preservation, which involved cooking foods in sealed jars at high temperatures. He described his method of preserving food in a book published in 1811, "L'Art De Conserver, Pendant Plusiers Annes, Toutes les Substances Animales et Végétales," which translated means "The Art of Preserving All Kinds of Animal and Vegetable Substances for Several Years." He later built a bottling factory and began to produce preserved foods for the people of France and is credited with being the "Father of Canning."

  15. Resolution of fine biological structure including small narcomedusae across a front in the Southern California Bight

    NASA Astrophysics Data System (ADS)

    McClatchie, Sam; Cowen, Robert; Nieto, Karen; Greer, Adam; Luo, Jessica Y.; Guigand, Cedric; Demer, David; Griffith, David; Rudnick, Daniel

    2012-04-01

    We sampled a front detected by SST gradient, ocean color imagery, and a Spray glider south of San Nicolas Island in the Southern California Bight between 14 and 18 October 2010. We sampled the front with an unusually extensive array of instrumentation, including the Continuous Underway Fish Egg Sampler (CUFES), the undulating In Situ Ichthyoplankton Imaging System (ISIIS) (fitted with temperature, salinity, oxygen, and fluorescence sensors), multifrequency acoustics, a surface pelagic trawl, a bongo net, and a neuston net. We found higher fluorescence and greater cladoceran, decapod, and euphausiid densities in the front, indicating increased primary and secondary production. Mesopelagic fish were most abundant in oceanic waters to the west of the front, market squid were abundant in the front associated with higher krill and decapod densities, and jack mackerel were most common in the front and on the shoreward side of the front. Egg densities peaked to either side of the front, consistent with both offshore (for oceanic squid and mesopelagic fish) and shelf origins (for white croaker and California halibut). We discovered unusually high concentrations of predatory narcomedusae in the surface layer of the frontal zone. Potential ichthyoplankton predators were more abundant either in the front (decapods, euphausiids, and squid) or shoreward of the front (medusae, chaetognaths, and jack mackerel). For pelagic fish like sardine, which can thrive in less productive waters, the safest place to spawn would be offshore because there are fewer potential predators.

  16. [The role of the "Clinica del Lavoro Luigi Devoto" in international research].

    PubMed

    Bertazzi, P A; Forni, Alessandra M

    2003-01-01

    During its long history, the Clinica del Lavoro Luigi Devoto has produced numerous internationally recognized scientific contributions in the specific field of occupational medicine and health, and in other broader areas as, for example, immunology, toxicology, cytogenetics. Pivotal in this activity was the figure of Enrico C. Vigliani, director of the Clinica for over 35 years. We mention here, in particular, the results of the study of "early" markers of lead intoxication; the research on the carcinogenicity of benzene and aromatic amines; the study of the pathogenesis of silicosis and byssinosis; the study of cytogenetic damage after exposure to industrial toxic chemicals; the technical research for dust abatement in mines. Such research also played a major role in the development of pulmonary medicine, toxicology and immunology in Italy, and conferred scientific dignity on the newborn "industrial hygiene" discipline thanks to the work of Nicola Zurlo. Today, the Clinica's research is maintained at international standards especially by the work of thematic Research Centers recently established within the Clinica, covering fields such as occupational and environmental toxicology, occupational oncology, ergonomics, respiratory disease and allergy, psycho-social risk factors. These Centers are also devoted to the development of innovative methods in epidemiology, toxicology, psychology, molecular biology, and ergonomic measurement for the identification and evaluation of health risks at work.

  17. Has psychology "found its true path"? Methods, objectivity, and cries of "crisis" in early twentieth-century French psychology.

    PubMed

    Carson, John

    2012-06-01

    This article explores how French psychologists understood the state of their field during the first quarter of the twentieth century, and whether they thought it was in crisis. The article begins with the Russian-born psychologist Nicolas Kostyleff and his announcement in 1911 that experimental psychology was facing a crisis. After briefly situating Kostyleff, the article examines his analysis of the troubles facing experimental psychology and his proposed solution, as well as the rather muted response his diagnosis received from the French psychological community. The optimism about the field evident in many of the accounts surveying French psychology during the early twentieth century notwithstanding, a few others did join Kostyleff in declaring that all was not well with experimental psychology. Together their pronouncements suggest that under the surface, important unresolved issues faced the French psychological community. Two are singled out: What was the proper methodology for psychology as a positive science? And what kinds of practices could claim to be objective, and in what sense? The article concludes by examining what these anxieties reveal about the type of science that French psychologists hoped to pursue.

  18. [Rural women. Public health workshop of the Centro de Investigaciones en Psicologia Social].

    PubMed

    Juarez Bartola, M; Garcia Ventura, H; De Jesus Leon, M J

    1993-04-01

    Mexico's peasant sector is undergoing great change as a result of the insertion of capitalist relations into areas that were previously remote. The traditional peasant subsistence economy has been displaced, and peasants have been forced to adopt a series of new strategies for survival, entailing proletarianization or selling of labor. Women in the community of San Nicolas Zoyapetlayoca, in the municipio of Tepeaca, have lived in a situation of poverty and precariousness for some time. Most of the population historically depended on the neighboring haciendas for their livelihood. Women and children also worked there, mistreated and without social protection. The lands that were distributed after the Revolution are insufficient to support the community, and most families must look elsewhere for employment. Incomes are insufficient to cover all the necessities of education, health, nutrition, and other aspects of life. Most women are educated no farther than the primary level. They spend most of their time preparing food, carrying water, washing clothes, caring for their children, and in other domestic chores. Some women work for wages as laborers, factory workers, or domestics. Rural women are disadvantaged by poor working conditions, insufficient education, low levels of health and nutrition, limited participation in social and political life, poor housing and lack of services, and frequently by their own attitudes of traditionalism or fatalism.

  19. Effects of experimental overgrowth on survival and change in the turf assemblage of a giant kelp forest

    USGS Publications Warehouse

    Miles, A.K.; Meslow, E.C.

    1990-01-01

    Crustose coralline algae were the prevalent cover among sessile organisms that paved or grew near the substratum, and also the most commonly overgrown species in a giant kelp Macrocystis pyrifera (L.) C.A. Agardh forest located off San Nicolas Island, California. Giant kelp was the largest and most conspicuous species that overgrew large patches of the substrata; overgrowth among turf organisms also appeared common. To determine the effects of giant kelp holdfasts on crustose coralline algae and other turf organisms,'artificial holdfasts' were placed on 0.125-m2 plots for 5, 8 and 12 months. In these treatments, 50?57% of the crustose coralline algae survived. Because these algae also recruited while covered, the total cover (survivorship plus recruitment) differed by only 7?26% from that sampled at the start of the study. The decline of these algae in control plots was similar to that in the treatment plots mostly because of overgrowth by sessile invertebrates. Bryozoans increased markedly on the control plots, whereas 0?12% survived in the treatment plots. Bryozoans and sponges also recruited under the artificial holdfasts. Some arborescent turf algae survived in the 5- and 8-month treatments; articulated coralline algae survived better than did foliose algae. High survival recruitment of crustose coralline algae while overgrown contributed to their prevalence in benthic communities.

  20. The Fahr syndrome and the chronic lymphocytic thyroiditis.

    PubMed

    Sava, Anca; Dumitrescu, Gabriela; Haba, Danisia; Hodorog, Diana; Mihailov, Claudia; Şapte, Elena

    2013-01-01

    Fahr syndrome (FS) refers to basal ganglia calcification that is associated with many neurological and psychiatric abnormalities and appears as secondary to other diseases. We described a case of FS patient who was admitted in the Department of Neurology of "Prof. Dr. Nicolae Oblu" Clinical Emergency Hospital, Iassy, Romania, with seizure and mood disorders. On CT, the cause of seizure was found to be the bilateral calcifications of cerebellum, basal ganglia, thalamus and internal capsule. As the patient died after 15 days of hospitalization due to new seizures and gastrointestinal infection, an autopsy was made. Grossly, there were bilateral symmetrically gritty yellow areas in basal ganglia, thalami, internal capsule, cerebral cortex, cerebellar folia, dentate nucleus, and brain stem. A detailed histopathological examination revealed five types of calcium deposits within the walls of capillaries, small and medium-sized arteries from the intracerebral affected areas, chronic lymphocytic thyroiditis and fibro-adipose tissue instead of parathyroids. We consider that intracerebral symmetrical calcifications were the results of the hypoparathyroidism determined by an ancient autoimmune parathyroiditis that evolved to fibrosis as at microscopy we found an autoimmune thyroiditis.

  1. The renaissance of Peiresc: Aubin-Louis Millin and the postrevolutionary republic of letters.

    PubMed

    Adkins, G Matthew

    2008-12-01

    This essay argues for the emergence of a cultural and epistemological divide between amateur savants and members of the Royal Academy of the Sciences in late Old Regime and revolutionary France and suggests that the amateur ideal rose in significance even as intellectual activity came to be increasingly centralized in the postrevolutionary era. At the crux of the tensions between the amateur ideal and the professionalizing reality in the immediate postrevolutionary period stood Aubin-Louis Millin and his journal, the Magasin Encyclopédique. The essay examines, in particular, the revival in the pages of the Magasin Encyclopédique of interest in Nicolas-Claude Fabri de Peiresc, the seventeenth-century icon of an amateur ideal in which investigations in the natural sciences and scholarship were private, decentralized, often provincial activities. Although the sciences in the revolutionary and Napoleonic eras were often perceived as forward looking and dismissive of the past, this essay finds that a sentimental and nostalgic attachment to the past-to a myth of Peiresc-continued to play an important role in the identity of postrevolutionary men of letters.

  2. [Clinical pictures. The body of the early modern artist].

    PubMed

    Bruhn, Matthias

    2007-01-01

    Historians usually consult letters by artists in order to verify and to interpret works of art. These letters contain basic information about technical, social and psychological aspects. As personal documents, they have always enjoyed a particular esteem among biographers and collectors. On the other hand, historians have often suggested that artists are the melancholic outcasts of society. But even a brief glance at the available correspondence proves that the majority of letters do not support this diagnosis. When artists mention their own physical constitution, they apologise for delays or request further financial support. Moreover, the letter is subject to literary codes according to which medical issues are adopted as a metaphor for more general problems. The French classical painter Nicolas Poussin, on whom the present analysis is based, displayed a particular interest in questions of style and literacy. His writings should then be regarded as complex "compositions" that stand comparison with his artistic oeuvre rather than mere informal messages to his readers. Indeed, correspondences between artists and their patrons, colleagues and friends form a "genre" in their own right that can be drawn upon as a reliable source for research in medical history.

  3. Foucault at the bedside: a critical analysis of empowering a healthy lifestyle.

    PubMed

    Devisch, Ignaas; Vanheule, Stijn

    2015-06-01

    Since quite a few years, philosophy is heading towards the bedside of the patient: the practice of philosophy has stepped out of its ivory tower, it seems, to deal with empirical or practical questions. Apart from the advantages, we should keep in mind the importance of a critical analysis of medical or clinical practice as such. If ethics partakes the clinical stage, it runs the risk only to discuss the how question and to forget the more fundamental what or why questions: what are we doing exactly and why is it good for? Starting from the principle of the empowerment of the patient, we will demonstrate how the discourse on empowerment in health care seems to forget a profound reflection upon this principle as such. By rehearsing some basics from the governmentality theory of Michel Foucault and the actualization of it by Nicolas Rose, we will argue how philosophical investigation in medical-ethical evolutions such as empowerment of the patient is still needed to understand what is really going on in today's clinical practice.

  4. The Orléans-Lithothèque - an analogue rockstore for in situ missions

    NASA Astrophysics Data System (ADS)

    Bost, Nicolas; Westall, Frances; Ramboz, Claire

    2010-05-01

    The Orléans-Lithothèque - an analogue rockstore for in situ missions Nicolas Bost, Frances Westall, Claire Ramboz, Axelle Hubert, Derek Pullan, Beda Hofmann, Elisabeth Vergès, Michel Viso, Jorge Vago, Christelle Briois, Bruno Scaillet, Michel Tagger Instruments for in-situ missions to extraterrestrial bodies should ideally be cross calibrated using a common suite of relevant materials. Such multi-instrument calibration would enable a better comparison of instrument performances during the mission, as well as aid in the interpretation of the in-situ measurements. At the CNRS in Orléans, the Observatoire des Sciences de l'Univers de la region Centre is creating a collection of well-characterised rocks that will be available for testing and calibrating instruments to be flown on space missions. The characteristics of the collection's analogue materials will be described in an online database. In view of the upcoming 2018 ExoMars rover mission, we are concentrating initially on materials of direct relevance to Mars. The initial collection includes basalts (ultramafic, weathered, andesitic, hydrothermally-silicified); sediments (volcanic, biolaminated, banded iron formation); and minerals (silica, evaporites, clays, Fe oxides). This set of samples will be augmented with time. All samples will be characterised petrographically, petrologically, and geochemically using the types of analyses likely to be performed during an in-situ mission: hand specimen description, optical microscopy, mineralogical analysis (XRD, Raman and IR spectrometry), elemental analysis (EDX, microprobe, ICP) and organics analysis (Raman, pyr-GCMS).

  5. Self-Assembly by Instruction: Designing Nanoscale Systems Using DNA-Based Approaches (474th Brookhaven Lecture)

    SciTech Connect

    Gang, Oleg

    2012-01-18

    In the field of nanoscience, if you can control how nanoparticles self-assemble in particular structures — joining each other, for example, as molecules can form, atom-by-atom — you can design new materials that have unique properties that industry needs. Nature already uses the DNA genetic code to instruct the building of specific proteins and whole organisms in both plants and people. Taking a cue from nature, scientists at BNL devised a way of using strands of synthetic DNA attached to the surface of nanoparticles to instruct them to self-assemble into specific nanoscale structures, clusters, and three-dimensional organizations. Novel materials designed and fabricated this way promise use in photovoltaics, energy storage, catalysis, cell-targeted systems for more effective medical treatments, and biomolecular sensing for environmental monitoring and medical applications. To find out more about the rapid evolution of this nanoassembly method and its applications, join Physicist Oleg Gang of the Center for Functional Nanomaterials (CFN) as he gives the 474th Brookhaven Lecture, titled “Self-Assembly by Instruction: Designing Nanoscale Systems Using DNA-Based Approaches." Gang, who has led this work at the CFN, will explain the rapid evolution of this nanoassembly method, and discuss its present and future applications in highly specific biosensors, optically active nano-materials, and new ways to fabricate complex architectures in a rational manner via self-assembly. Gang and his colleagues used the CFN and the National Synchrotron Light Source (NSLS) facilities to perform their groundbreaking research. At the CFN, the scientists used electron microscopes and optical methods to visualize the clusters that they fabricated. At the NSLS, they applied x-rays to study a particles-assembly process in solution, DNA’s natural environment. Gang earned a Ph.D. in soft matter physics from Bar-Ilan University in 2000, and he was a Rothschild Fellow at Harvard

  6. FOREWORD: V S Letokhov

    NASA Astrophysics Data System (ADS)

    Stroke, H. Henry; Linnartz, Harold

    2012-04-01

    Comments on Atomic, Molecular and Optical Physics (CAMOP) endeavors periodically to devote an issue to the life and accomplishments of physicists who have made significant contributions to the fields represented in this journal. Vladilen Letokhov is certainly one of them. For a number of years he was also a CAMOP Correspondent. We are grateful to Professor Victor Balykin for having organized this CAMOP special section. It is particularly significant to one of us (HHS) to remember a person who has made seminal advances in so many areas which to this day are at the forefront of studies by a number of physicists. But over the years this acquaintance developed into friendship and gave the wife of one of us, Norma, and HHS the opportunity to host Tina and Vladik in their home, and get to know both a bit better. There was also the seminal International School on Laser Applications in Physics in Vilnius organized by Letokhov, and then a visit to Troitsk and his group at the Institute of Spectroscopy (and even the organization of a couple of piano recitals by one of our daughters, Marija, who accompanied her parents in the then USSR). Our interests crossed in a couple of fields: laser interactions with atoms and sensitive spectroscopy of radioactive atoms. Letokhov was a participant in the early organization of laser spectroscopy at CERN and was instrumental in providing copper vapour lasers to the isotope separator facility, ISOLDE. To this day laser ion sources are under the aegis of Valentin Fedoseyev who came to CERN from Troitsk. The interaction of lasers with atoms, in particular the process of slowing atoms, is discussed by Balykin. It was Christmas time when a card arrived from Oleg Tumanov of the Institute of Spectroscopy: it included a graph of temperature achieved by laser cooling as a function of calendar date. The results of Letokhov's group were the earliest (see figure 1), even though lower temperatures achieved subsequently by others extended our knowledge

  7. PREFACE: Special issue: CAMOP-MOLEC XVII Special issue: CAMOP-MOLEC XVII

    NASA Astrophysics Data System (ADS)

    Vasyutinskii, Oleg

    2009-10-01

    processes, gas-surface processes, and biologically relevant systems; ab initio calculations of molecular dynamics; photon-matter interactions: spectroscopy, photodissociation and photo-induced reactions including femtosecond dynamics; interaction between ultra-cold molecules and atoms and processes in He droplets; and steric effects and vector correlations in reactive processes and in photodissociation. The organizers are pleased to acknowledge the support of LENTRANSGAS, Russian Foundation for Basic Research, and the Russian Academy of Sciences. We are very grateful to all members of the Local Organizing Committee, especially Alexei Podlaskin, Irina Krassovskaya, Oleg Rojdestvenski, Peter Shternin, Andrey Smolin, Irina Beletskaya, Alexei Verkhovtsev and Ekaterina Khadikova, whose hard work made the conference so successful. I very much hope that you will enjoy reading this special issue and that many of the articles presented will catch your attention. Perhaps we will meet at MOLEC XVIII in 2010, in Coimbra, Portugal.

  8. The metabolic reactions in men and women during long-term head-down tilt

    NASA Astrophysics Data System (ADS)

    Markin, Andrey

    We have demonstrated that dynamics of alterations of some biochemical blood indices during ling-term space flights and at a long duration head-down tilt (HDT) features that same directionality [Andrei Markin, Lubov Strogonova, Oleg Balashov et al, 1998]. A comparison between biochemical blood parameters at 120-day HDT was provided for groups consisting of nine men (MG1),six men (MG2) and four women (WG). All examined persons aged were exposed to "pure" HDT without resort to any prophylactic agents. Under investigations were concentrations of urea, uric acid, total cholesterol [CHO], HDL-cholesterol [HDL], triglycerides (TG), primary lipid peroxidation (LPO) products, final LPO products, tocopherol (TP) as well as activity of alanin aminotransferase (ALT), total creatin kinase (CK). For all the groups the investigated indices values were expressed as a percentage to background ones. ALT activity for the WG group had a tendency to decrease by 2-15 Women presented a moderate urea concentration lowering which ranged from 99 to 86 CHO level in WG was also elevated, and the extent to which elevated, for the most part, exceeded that of men, but beginning with the 72-nd - 84-th days of HDT an increase in MG1 become more pronounced with its retaining up to the RP. In all groups the tendency for decrease in HDL content was observed, however, it was more pronounced with men. In the RP the parameter value was increased in MG1 and MG2, but in WG it remained at the level which was observed at HDT. TG concentration women presented in the course of HDT increased, but beginning with the 49-th - 50-th day of experiment an increased in MG1 and MG2 became more pronounced. LPO products content dynamics in WG manifested as alternating increases and decreases relative to the background values (65 to 24 Comparative results of biochemical value dynamics investigation obtained in the course of a 120- day HDT demonstrated that women feature slower and less pronounced formation of metabolic

  9. A Real-Time Response to a Marine Oil Spill: an Intedisciplinary Approach.

    NASA Astrophysics Data System (ADS)

    Garcia-Garrido, Victor J.; Ramos, Antonio; Mancho, Ana M.; Coca, Josep; Wiggins, Stephen

    2016-04-01

    By combining tools from dynamical systems theory and remote sensing techniques, we achieve a remarkable representation of the events following the sinking of the Oleg Naydenov fishing ship, that took place close to the Canary Islands in April 2015 [1]. The emergency services acquired a precise knowledge of the evolution of the spill, occurred after the sinking, by means of a formidable, extremely time-consuming and expensive effort. In this presentation we show that remote sensing techniques [2] allowed a direct observation of the spill in extensive areas. The time evolution of the observed spills was pursued by dynamical systems tools that, based on COPERNICUS IBI velocity fields data, were able to predict the impact of the spill in the coast of Gran Canaria. A deep description of the dispersion processes produced by ocean currents is achieved by means of Lagrangian Descriptors [3,4,5] that highlight an invisible but real dynamical skeleton, governing the transport processes in the area. This research is supported by MINECO ICMAT Severo Ochoa project SEV-2011-0087 and SEV-2015-0554 and grants MTM2014-56392-R, UNLP-13-3E-2664 (2013-2015) and ONR grant No. N00014- 01-1-0769. [1] V. J. García-Garrido, A. Ramos, A. M. Mancho, J. Coca, S. Wiggins. Assemblage of Tools for a Real-Time Response to a Marine Oil Spill. Preprint (2015). [2] A. Pisano, F. Bignami, R. Santoleri, Oil spill detection in glint-contaminated near-infrared MODIS imagery, Remote Sens. 7 (1) (2015) 1112-1134. [3] C. Mendoza, A. M. Mancho. The hidden geometry of ocean flows. Physical Review Letters 105 (2010), 3, 038501-1-038501-4. [4] A. M. Mancho, S. Wiggins, J. Curbelo, C. Mendoza. Lagrangian Descriptors: A Method for Revealing Phase Space Structures of General Time Dependent Dynamical Systems. Communications in Nonlinear Science and Numerical Simulation. 18 (2013) 3530-3557. [5] C. Lopesino, F. Balibrea, S. Wiggins, A.M. Mancho. Lagrangian Descriptors for Two Dimensional, Area Preserving

  10. Geodynamic evolution and sedimentary infill of the northern Levant Basin: A source to sink-perspective

    NASA Astrophysics Data System (ADS)

    Hawie, N.

    2013-12-01

    Nicolas Hawie a,b,c (nicolas.hawie@upmc.fr) Didier Granjeon c (didier.granjeon@ifpen.fr) Christian Gorini a,b (christian.gorini@upmc.fr) Remy Deschamps c (remy.deschamps@ifpen.fr) Fadi H. Nader c (fadi-henri.nader@ifpen.fr) Carla Müller Delphine Desmares f (delphine.desmares@upmc.fr) Lucien Montadert e (lucien.montadert@beicip.com) François Baudin a (francois.baudin@upmc.fr) a UMR 7193 Institut des Sciences de la Terre de Paris, Université Pierre et Marie Curie/ Univ. Paris 06, case 117. 4, place Jussieu 75252 Paris Cedex 05, France b iSTEP, UMR 7193, CNRS, F-75005, Paris, France c IFP Energies nouvelles, 1-4 avenue du Bois Préau 92852 Rueil Malmaison Cedex, France d UMR 7207, Centre de Recherche sur la Paleobiodiversité et les Paleoenvironnements. Université Pierre et Marie Curie, Tour 46-56 5ème. 4, place Jussieu 75252 Paris Cedex 05, France e Beicip Franlab, 232 Av. Napoléon Bonaparte, 95502 Rueil-Malmaison, France Sedimentological and biostratigraphic investigations onshore Lebanon coupled with 2D offshore reflection seismic data allowed proposing a new Mesozoic-Present tectono-stratigraphic framework for the northern Levant Margin and Basin. The seismic interpretation supported by in-depth facies analysis permitted to depict the potential depositional environments offshore Lebanon as no well has yet been drilled. The Levant region has been affected by successive geodynamic events that modified the architecture of its margin and basin from a Late Triassic to Middle Jurassic rift into a Late Cretaceous subduction followed by collision and Miocene-Present strike slip motion. The interplay between major geodynamic events as well as sea level fluctuations impacted on the sedimentary infill of the basin. During Jurassic and Cretaceous, the Levant Margin is dominated by the aggradation of a carbonate platform while deepwater mixed-systems prevailed in the basin. During the Oligo-Miocene, three major sedimentary pathways are expected to drive important

  11. Sulfide-Sulfate Mineralizations in Verzino Area (Crotone Basin, Southern Italy): New insights on localized hydrothermal fluid circulations and their relationship with tectonics.

    NASA Astrophysics Data System (ADS)

    Berardi, Gabriele; Lucci, Federico; Cozzupoli, Domenico; Pizzino, Luca; Cantucci, Barbara; Quattrocchi, Fedora

    2010-05-01

    In this early stage of the work we present a preliminary study of hydrothermal mineralizations found in Verzino locality, Crotone Basin, Southern Appennines, (Calabria, Italy). Both geochemical and petrographic investigations were developed with the aim of understanding the genesis of the sulfide-sulfate associations present in the "Argille Marnose del Ponda" formation, deepening their relationship with fluids circulation. These mineralizations have been recognized only in two "Calanchi" morphostructures - Badlands like morphology developed by the differential erosional pattern of the "Argille Marnose del Ponda" fm. - and constituting the northwestern flank of a little valley evolved in the Miocene sedimentary sequence from "Conglomerato di S.Nicola" fm. to "Evaporiti Superiori" fm. The mineralizations are distributed along isooriented centimetric veins (with mean direction of N120) and in nodules diffused close to the veins. These hydrothermal mineralizations are constituted by an associations of Pyrite spherical nodules (millimetric to centimetric in radius with occurrences of well developed octahedral habit single crystals), sulphate crystals (Gypsum, Jarosite, NatroJarosite), Oxides (Goethite mainly), millimetric veins of Barite and micrometric Ankerite specimens. The data (mineral habits, semiquantitative compositions and x-Ray spectra), obtained by an integration of S.E.M and XRD investigations, permit us, at the current stage of the study, to hypothesize a possible hydrothermal origin (whose temperature range estimate needs further investigations) for the sulfide-sulfate mineral phases. At the moment, we exclude their primary or secondary sedimentary provenance. The comparison of our results with the previous scientific literature focused on hydrothermal sulfide-sulfate systems (Vinogradov and Stephanov, 1964; Kostov, 1968; Plummer 1971; Boles, 1978; Ferrini and Moretti 1998) allows us to propose a possible "thermal window" ranging in the interval 50°C-230

  12. Mapping contact metamorphic aureoles in Extremadura, Spain, using Landsat thematic mapper images

    USGS Publications Warehouse

    Rowan, L.C.; Anton-Pacheco, C.; Brickey, D.W.; Kingston, M.J.; Payas, A.

    1987-01-01

    studies, confirmed the presence of more extensive aureoles than shown in published geologic maps; few misclassified areas were noted. Additional plowed fields consisting of exposed contact metamorphic soil were mapped digitally in an August 1985 TM scene. Subsequently, this approach was used to map two 1-km-wide linear zones of contact metamorphosed rock and oil in the San Nicolas-Sn-W Mine area, which is located approximated 125 km southeast of the Caceras study area. Exposures of granite in the San Nicolas area are limited to a few unaltered granitic dikes in the mine and a small exposure of unaltered pegmatite-bearing granite in a quarry about 1.5 km west of the mine. The present of coarsely crystalline biotite and beryl in the granite in the quarry and of contact metamorphosed slate up to 2.5 km from the nearest granite exposure suggest that only the apical part of a pluton is exposed in the quarry and that a larger, shallowly buried body is probably present. These results indicate that potential application of TM image analysis to mineral exploration in lithologically similar areas that are cultivated in spite of poor rock exposures.

  13. Can CMB Experiments Find Planet Nine?

    NASA Astrophysics Data System (ADS)

    Kohler, Susanna

    2016-04-01

    Recent studies have identified signs of an unseen, distant ninth planet in our solar system. How might we find the elusive Planet Nine? A team of scientists suggests the key might be cosmology experiments.AHypothetical PlanetOrbits of six distant Kuiper-belt objects. Their clustered perihelia and orbital orientations suggest they may have been shepherded by a massive object, hypothesized to be Planet Nine. [Caltech/Robert Hurt]Early this year, a study was published that demonstrated that the clustered orbits of distant Kuiper belt objects (and several other features of our solar system) can be explained by the gravitational tug of a yet-undiscovered planet. This hypothetical Planet Nine is predicted to be a giant planet similar to Neptune or Uranus, with a mass of more than ~10 Earthmasses, currently orbiting ~700 AU away.In a recent study, a team of scientists led by Nicolas Cowan (McGill University in Canada) has estimated the blackbody emission expected from Planet Nine. The team proposes how we might be able to search for this distant body using its heat signature.Heat from an Icy WorldCowan and collaborators first estimate Planet Nines effective temperature, based on the solar flux received at ~700 AU and assuming its internal heating is similar to Uranus or Neptune. They find that Planet Nines effective temperature would likely be an icy ~3050 K, corresponding to a blackbody peak at 50100 micrometers.Search space for Planet Nine. Based on its millimeter flux and annual parallax motion, several current and future cosmology experiments may be able to detect it. Experiments resolution ranges are shown with blue boxes. [Cowan et al. 2016]How can we detect an object withemission that peaks in this range? Intriguingly, cosmology experiments monitoring the cosmic microwave background (CMB) radiation are optimized for millimeter flux. At a wavelength of 1mm, Cowan and collaborators estimate that Planet Nine would have a very detectable flux level of ~30 mJy. The

  14. Sulphur isotope geochemistry of the ores and country rocks at the Almadén mercury deposit, Ciudad Real, Spain

    NASA Astrophysics Data System (ADS)

    Saupé, Francis; Arnold, Michel

    1992-10-01

    Seventy-four new S isotope analyses of ore minerals and country rocks are given for the Hg deposit of Almadén. The spread of the cinnabar δ34S is narrow within each of the three orebodies, but the δ34S average values differ sufficiently between them (mean δ34S: San Nicolas = 0.2 ± 1.1 %., San Francisco = 8.1 ± 0.7%., San Pedro = 5.9 ± 1.0%.) to indicate three different mineralization episodes and possibly processes. The unweighted mean for all cinnabar samples is 5.6%. and the S source is considered to be the host-rocks, either the Footwall Shales ( δ34S = 5.5%.) or the spilites ( δ34 S = 5.1 ± 1.3%.). For geometric and chronologic reasons, the former seem the best potential source. However, the high δ34 S values of the San Francisco cinnabar cannot be explained without addition of heavy S from reduction of seawater sulphate. Orderly distributions of the δ34S values are observed in all three orebodies: (1) their increase from the stratigraphic bottom to the top in the San Pedro orebody is explained by a Rayleigh process, and (2) the maxima in the centres of the San Francisco and San Nicolas orebodies are explained by mixing of the S transporting hydrothermal fluids with seawater within the sediments. Associated pyrite and cinnabar were deposited under isotopic disequilibrium, probably because the low solubility of cinnabar caused rapid precipitation of cinnabar. The different morphological pyrite types have their own isotopic δ34S signatures. The spilites are notably enriched in S ( n = 3; average S content = 0.56%) compared to normal basalts (1000 ppm) and have an average δ34S = 5.1 ± 1.3%.. The linear relationship between the δ34S and the S content of the spilites is interpreted as a mixing line between mantle S and a constant S source, probably an infinite open reservoir. An incomplete basalt-seawater reaction at nearly constant temperature is the best explanation for this relation. The S (predominantly pyrite) of the black shales ( n = 3; δ34S

  15. Developing Students' Reflections on the Function and Status of Mathematical Modeling in Different Scientific Practices: History as a Provider of Cases

    NASA Astrophysics Data System (ADS)

    Kjeldsen, Tinne Hoff; Blomhøj, Morten

    2013-09-01

    Mathematical models and mathematical modeling play different roles in the different areas and problems in which they are used. The function and status of mathematical modeling and models in the different areas depend on the scientific practice as well as the underlying philosophical and theoretical position held by the modeler(s) and the practitioners in the extra-mathematical domain. For students to experience the significance of different scientific practices and cultures for the function and status of mathematical modeling in other sciences, students need to be placed in didactical situations where such differences are exposed and made into explicit objects of their reflections. It can be difficult to create such situations in the teaching of contemporary science in which modeling is part of the culture. In this paper we show how history can serve as a means for students to be engaged in situations in which they can experience and be challenged to reflect upon and criticize, the use of modeling and the significance of the context for the function and status of modeling and models in scientific practices. We present Nicolas Rashevsky's model of cell division from the 1930s together with a discussion of disagreement between him and some biologists as one such episode from the past. We illustrate how a group of science students at Roskilde University, through their work with this historical case, experienced that different scientific cultures have different opinions of the value of a model as an instrument for gaining scientific knowledge; that the explanatory power of a model is linked not only to the context of its use, but also to the underlying philosophical and theoretical position held by the modeler(s) and the scientists discussing the model and its use. The episode's potential to challenge students to reflect upon and criticize the modeling process and the function of models in an extra mathematical domain is discussed with respect to the notions of

  16. To speak in tongues: language, diversity and psychoanalysis.

    PubMed

    Connolly, Angela

    2002-07-01

    After reviewing the different psychoanalytical approaches to language of authors such as Freud, Lacan, Kristeva, Jung and Nicolas Abraham, the author examines the problem of 'analytical listening', of the attitude that every analyst must assume towards the words of the analysand, words that must be heard not just in terms of their content but above all in terms of their sound. We live in a culture in which visual images predominate over acoustic images and all too often this cultural trend is repeated in analysis, but it is only when we can hear the 'poetry' of the analysand's discourse that we are able to provide an 'echo', an analytical response that can co-symbolize with, that can offer to the analysand a word or a metaphor that will unlock the symbol hidden behind his or her words. The author then turns to the problem of bilinguism and its role in analysis. In her view, bilingual analysts are facilitated in their task of listening and of translation, because bilinguism facilitates the rapidity and fluidity of the analyst's associations, and at the same time sharpens his or her awareness of how the sound of a word can subtly change its meaning. The paper ends with a clinical vignette which illustrates the role that language can play in hysteria. In hysteria the dissociation between body and psyche is accompanied by a dissociation inside language itself, between verbalization and vocalization. These dissociations can be linked to the traumatic impact of the encounter between the 'language of tenderness' and the 'language of passion', between the child's attachment needs and parental sexuality. In such cases the failure of communication can be resolved principally through the use the analyst makes of the countertransference.

  17. Estimated accuracy of ground-based liquid water measurements during FIRE

    NASA Technical Reports Server (NTRS)

    Snider, Jack B.

    1990-01-01

    Since on goal of the First ISCCP Regional Experiment (FIRE) project is to improve our understanding of the relationships between cloud microphysics and cloud reflectivity, it is important that the accuracy of remote liquid measurements by microwave radiometry be thoroughly understood. The question is particularly relevant since the uncertainty in the absolute value of the radiometric liquid measurement is greatest at low liquid water contents (less than 0.1 mm). However it should be stressed that although uncertainty exists in the absolute value of liquid, it is well known that the observed radiometric signal is proportional to the amount of liquid in the antenna beam. As a result, changes in amounts of liquid are known to greater accuracy than the absolute value, which may contain a bias. Here, an assessment of the liquid measurement accuracy attained at San Nicolas Island (SNI) is presented. The vapor and liquid water data shown were computed from the radiometric brightness temperatures using statistical retrieval algorithms. The retrieval coefficients were derived from the 69 soundings made by Colorado State University during the SNI observations. Sources of error in the vapor and liquid measurements include cross-talk in the retrieval algorithms (not a factor at low liquid contents), uncertainties in the brightness temperature measurement, and uncertainties in the vapor and liquid attenuation coefficients. The relative importance of these errors is discussed. For the retrieval of path-integrated liquid water, the greatest uncertainty is caused by the temperature dependence of the absorption at microwave frequencies. As a result, the accuracy of statistical retrieval of liquid depends to large measure upon how representative the a priori radiosonde data are of the conditions prevailing during the measurements. The microwave radiometer measurements at SNI were supplemented by an infrared (IR) radiometer modified for measurement of cloud-base temperature. Thus

  18. Plasma processing methods for hydrogen production

    NASA Astrophysics Data System (ADS)

    Mizeraczyk, Jerzy; Jasiński, Mariusz

    2016-08-01

    In the future a transfer from the fossil fuel-based economy to hydrogen-based economy is expected. Therefore the development of systems for efficient H2 production becomes important. The several conventional methods of mass-scale (or central) H2 production (methane, natural gas and higher hydrocarbons reforming, coal gasification reforming) are well developed and their costs of H2 production are acceptable. However, due to the H2 transport and storage problems the small-scale (distributed) technologies for H2 production are demanded. However, these new technologies have to meet the requirement of producing H2 at a production cost of (1-2)/kg(H2) (or 60 g(H2)/kWh) by 2020 (the U.S. Department of Energy's target). Recently several plasma methods have been proposed for the small-scale H2 production. The most promising plasmas for this purpose seems to be those generated by gliding, plasmatron and nozzle arcs, and microwave discharges. In this paper plasma methods proposed for H2 production are briefly described and critically evaluated from the view point of H2 production efficiency. The paper is aiming at answering a question if any plasma method for the small-scale H2 production approaches such challenges as the production energy yield of 60 g(H2)/kWh, high production rate, high reliability and low investment cost. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  19. Discovery of a low-glycaemic index potato and relationship with starch digestion in vitro.

    PubMed

    Ek, Kai Lin; Wang, Shujun; Copeland, Les; Brand-Miller, Jennie C

    2014-02-01

    Potatoes are usually a high-glycaemic index (GI) food. Finding a low-GI potato and developing a screening method for finding low-GI cultivars are both health and agricultural priorities. The aims of the present study were to screen the commonly used and newly introduced cultivars of potatoes, in a bid to discover a low-GI potato, and to describe the relationship between in vitro starch digestibility of cooked potatoes and their in vivo glycaemic response. According to International Standard Organisation (ISO) guidelines, seven different potato cultivars were tested for their GI. In vitro enzymatic starch hydrolysis and chemical analyses, including amylose content analysis, were carried out for each potato cultivar, and correlations with the respective GI values were sought. The potato cultivars had a wide range of GI values (53-103). The Carisma cultivar was classified as low GI and the Nicola cultivar (GI = 69) as medium GI and the other five cultivars were classified as high GI according to ISO guidelines. The GI values were strongly and positively correlated with the percentage of in vitro enzymatic hydrolysis of starch in the cooked potatoes, particularly with the hydrolysis percentage at 120 min (r 0·91 and P <0·01). Amylose, dietary fibre and total starch content was not correlated with either in vitro starch digestibility or GI. The findings suggest that low-GI potato cultivars can be identified by screening using a high-throughput in vitro digestion procedure, while chemical composition, including amylose and fibre content, is not indicative.

  20. Visions of our Planet's Atmosphere, Land and Oceans: NASA/NOAA Electronic-Theater 2002. Spectacular Visualizations of our Blue Marble

    NASA Technical Reports Server (NTRS)

    Hasler, A. F.; Starr, David (Technical Monitor)

    2002-01-01

    Spectacular Visualizations of our Blue Marble The NASA/NOAA Electronic Theater presents Earth science observations and visualizations in a historical perspective. Fly in from outer space to the 2002 Winter Olympic Stadium Site of the Olympic Opening and Closing Ceremonies in Salt Lake City. Fly in and through Olympic Alpine Venues using 1 m IKONOS "Spy Satellite" data. Go back to the early weather satellite images from the 1960s and see them contrasted with the latest US and international global satellite weather movies including hurricanes & "tornadoes". See the latest visualizations of spectacular images from NASA/NOAA remote sensing missions like Terra, GOES, TRMM, SeaWiFS, Landsat 7 including new 1 - min GOES rapid scan image sequences of Nov 9th 2001 Midwest tornadic thunderstorms and have them explained. See how High-Definition Television (HDTV) is revolutionizing the way we communicate science. (In cooperation with the American Museum of Natural History in NYC). See dust storms in Africa and smoke plumes from fires in Mexico. See visualizations featured on the covers of Newsweek, TIME, National Geographic, Popular Science & on National & International Network TV. New computer software tools allow us to roam & zoom through massive global images e.g. Landsat tours of the US, and Africa, showing desert and mountain geology as well as seasonal changes in vegetation. See animations of the polar ice packs and the motion of gigantic Antarctic Icebergs from SeaWinds data. Spectacular new visualizations of the global atmosphere & oceans are shown. See vertexes and currents in the global oceans that bring up the nutrients to feed tiny algae and draw the fish, whales and fisherman. See the how the ocean blooms in response to these currents and El Nicola Nina climate changes. See the city lights, fishing fleets, gas flares and biomass burning of the Earth at night observed by the "night-vision" DMSP military satellite.

  1. Dissociation against oxidation kinetics for the conversion of VOCs in non-thermal plasmas of atmospheric gases

    NASA Astrophysics Data System (ADS)

    Pasquiers, Stéphane; Blin-Simiand, Nicole; Magne, Lionel

    2016-08-01

    The kinetics of four volatile organic compounds (VOCs) (propene, propane, acetaldehyde, acetone) were studied in plasmas of atmospheric gases using a photo-triggered discharge (homogeneous plasma) or a dielectric barrier discharge (filamentary plasma). It was shown for the homogeneous plasma that quenchings of nitrogen metastable states, A3Ʃ+u and the group of singlets a' 1Ʃ-u, a 1Πg and w 1∆u, are important processes for the decomposition of such molecules. Recent measurements of the H2 concentration produced in the N2/C3H6 mixture emphasize that the hydrogen molecule can be an exit route for propene dissociation. It is also found that H2 and CO molecules are efficiently produced following the dissociation of CH3COCH3 and the subsequent chemical reactivity induced by radicals coming from acetone. Addition of oxygen to a N2/VOC mixture can change drastically the kinetics. However, the quenching processes of N2 metastables by the VOC are always present and compete with oxidation reactions for the conversion of the pollutant. At low temperature, oxidations by O or by OH are not always sufficiently effective to induce an increase of the molecule decomposition when oxygen is added to the mixture. In particular, the presence of O2 has a detrimental effect on the acetone removal. Also, as evidenced for acetaldehyde and propane, some kinetic analogies appear between filamentary and homogeneous plasmas. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  2. The small-voxel tracking algorithm for simulating chemical reactions among diffusing molecules

    NASA Astrophysics Data System (ADS)

    Gillespie, Daniel T.; Seitaridou, Effrosyni; Gillespie, Carol A.

    2014-12-01

    Simulating the evolution of a chemically reacting system using the bimolecular propensity function, as is done by the stochastic simulation algorithm and its reaction-diffusion extension, entails making statistically inspired guesses as to where the reactant molecules are at any given time. Those guesses will be physically justified if the system is dilute and well-mixed in the reactant molecules. Otherwise, an accurate simulation will require the extra effort and expense of keeping track of the positions of the reactant molecules as the system evolves. One molecule-tracking algorithm that pays careful attention to the physics of molecular diffusion is the enhanced Green's function reaction dynamics (eGFRD) of Takahashi, Tănase-Nicola, and ten Wolde [Proc. Natl. Acad. Sci. U.S.A. 107, 2473 (2010)]. We introduce here a molecule-tracking algorithm that has the same theoretical underpinnings and strategic aims as eGFRD, but a different implementation procedure. Called the small-voxel tracking algorithm (SVTA), it combines the well known voxel-hopping method for simulating molecular diffusion with a novel procedure for rectifying the unphysical predictions of the diffusion equation on the small spatiotemporal scale of molecular collisions. Indications are that the SVTA might be more computationally efficient than eGFRD for the problematic class of non-dilute systems. A widely applicable, user-friendly software implementation of the SVTA has yet to be developed, but we exhibit some simple examples which show that the algorithm is computationally feasible and gives plausible results.

  3. The Impact of SuperB on Flavor Physics

    SciTech Connect

    Meadows, B.; Blanke, M.; Stocchi, A.; Drutskoy, A.; Cervelli, A.; Giorgi, M.; Lusiani, A.; Perez, A.; Walsh, J.; Hurth, T.; Bevan, A.; Silvestrini, L.; Ciuchini, M.; Tarantino, C.

    2012-02-16

    This report provides a succinct summary of the physics programme of SuperB, and describes that potential in the context of experiments making measurements in flavour physics over the next 10 to 20 years. Detailed comparisons are made with Belle II and LHCb, the other B physics experiments that will run in this decade. SuperB will play a crucial role in defining the landscape of flavour physics over the next 20 years. SuperB is an approved high luminosity e{sup +}e{sup -} collider intended to search for indirect and some direct signs of new physics (NP) at low energy, while at the same time, enabling precision tests of the Standard Model (SM). This experiment will be built at a new laboratory on the Tor Vergata campus near Rome, Italy named after Nicola Cabibbo. The project has been described in a Conceptual Design Report, and more recently by a set of three white papers on the accelerator, detector, and physics programme. The main focus of the physics programme rests in the study of so-called Golden Modes, these are decay channels that provide access to measurements of theoretically clean observables that can provide both stringent constraints on models of NP, and precision tests of the SM. A number of ancillary measurements that remain important include those with observables that may not be theoretically clean, and those that can be used to provide stringent constraints on the SM but are not sensitive to NP. The remainder of this section introduces SuperB before discussing the golden modes for SuperB, precision CKM measurement modes, and an outline of the rest of this report.

  4. Systematics and molecular phylogeny of the family oscarellidae (homoscleromorpha) with description of two new oscarella species.

    PubMed

    Gazave, Eve; Lavrov, Dennis V; Cabrol, Jory; Renard, Emmanuelle; Rocher, Caroline; Vacelet, Jean; Adamska, Maja; Borchiellini, Carole; Ereskovsky, Alexander V

    2013-01-01

    The family Oscarellidae is one of the two families in the class Homoscleromorpha (phylum Porifera) and is characterized by the absence of a skeleton and the presence of a specific mitochondrial gene, tatC. This family currently encompasses sponges in two genera: Oscarella with 17 described species and Pseudocorticium with one described species. Although sponges in this group are relatively well-studied, phylogenetic relationships among members of Oscarellidae and the validity of genus Pseudocorticium remain open questions. Here we present a phylogenetic analysis of Oscarellidae using four markers (18S rDNA, 28S rDNA, atp6, tatC), and argue that it should become a mono-generic family, with Pseudocorticium being synonymized with Oscarella, and with the transfer of Pseudocorticium jarrei to Oscarella jarrei. We show that the genus Oscarella can be subdivided into four clades, each of which is supported by either a small number of morphological characters or by molecular synapomorphies. In addition, we describe two new species of Oscarella from Norwegian fjords: O. bergenensis sp. nov. and O. nicolae sp. nov., and we compare their morphology, anatomy, and cytology with other species in this genus. Internal anatomical characters are similar in both species, but details of external morphology and particularly of cytological characters provide diagnostic features. Our study also confirms that O. lobularis and O. tuberculata are two distinct polychromic sibling species. This study highlights the difficulties of species identification in skeleton-less sponges and, more generally, in groups where morphological characters are scarce. Adopting a multi-marker approach is thus highly suitable for these groups.

  5. A simple carbon isotope model for reconstructing prehistoric human diet.

    PubMed

    Kellner, Corina M; Schoeninger, Margaret J

    2007-08-01

    A compilation of experimental animal data shows that neither delta13C(collagen) nor delta13C(apatite) nor Delta13C(CO-AP) indicate diagnostic reconstructions of diet, diet energy and diet protein. In contrast, plots of delta13C(collagen) against delta13C(apatite) provide a model of three regression lines (C3, C4, and marine diet protein) where position on each line indicates the energy source (C3, C4, or mixed). Neither body size nor trophic position appears to affect these relationships. Modern free-ranging, terrestrial fauna do not fit the model perhaps because they, unlike the experimental fauna, mainly use fermentation rather than digestion during energy metabolism. Archaeological humans fall as expected based on associated floral and faunal evidence. Foraging people plot at positions expected from associated C3 fauna and plants. Those from Cahokia plot, as expected, from associated deer, nuts, and maize whereas people from nearby smaller sites plot in positions consistent with eating more fish. Agriculturists from Ontario and Grasshopper Pueblo plot consistent with dependence on fish by the former and on turkeys by the latter. In Tierra del Fuego, people from interior regions ate more terrestrial fauna, as suggested by ethnohistoric reports, than did people from the coast. In the Southwestern Cape in South Africa individuals late in the sequence have pure C3 diets whereas ones early in the sequence ate marine protein as suggested by independent archaeological evidence. People on San Nicolas Island depended on C4 plants in contrast to other islands off California's coast. This simple model provides more detailed and precise dietary information than do individual isotopic measures.

  6. Sr-isotopic variation in the Quaternary: The record from glacial and interglacial marine terraces

    SciTech Connect

    Ludwig, K.R.; Muhs, D.R.; Simmons, K.R.; Szabo, B.J.; Moore, J.G. )

    1990-05-01

    The authors report high-precision Sr isotope of aragonitic fossils from Pleistocene marine terraces, which formed during both glacial and interglacial periods, to (1) constrain the marine Sr-isotope trend for the late Quaternary, and (2) test the long-term marine Sr-isotope trend for reversals related to glacial-interglacial transitions. Analyses of multiple samples of mollusks from each of 15 interglacial terraces on San Nicolas Island, San Clemente Island, and the Palos Verdes Hills (California) define a marine Sr-isotope trend (assigning terrace ages based on an assumption of constant long-term uplift rates calculated from the height of dated 120-Ka terraces) that is generally similar to the trend defined by the data of recent workers for DSDP samples. Data for three U-series dated interglacial terraces on the East Coast of the US plot close to the California trend, as do data for 14 coral samples of 0-750 Ka age (dated by mass-spectrometric {sup 234}U/{sup 238}U) from submerged, glacial-stage reefs off Hawaii. As a whole, their data indicate an approximately linear increase of approximately 0.05 % in {sup 87}Sr/{sup 86}Sr over the last 800 k.y., confirm the presence of a subtle ({approximately}0.01 %) reversal between approximately 900 and 600 Ka, and resolve a previously unrecognized reversal of approximately 0.02{per thousand} between approximately 1,400 and 1,200 Ka. In addition, the lack of obvious fine structure in samples younger than 800 ka indicates that the amplitude of any short-period oscillations (<100 ky.) in the marine {sup 87}Sr/{sup 86}Sr trend for the Late Quaternary is probably less than approximately 0.02{per thousand}.

  7. Rocky Flats Neutron Detector Testing at Valduc, France

    SciTech Connect

    Kim, S S; Dulik, G M

    2011-01-03

    Recent program requirements of the US Department of Energy/NNSA have led to a need for a criticality accident alarm system to be installed at a newly activated facility. The Criticality Safety Group of the Lawrence Livermore National Laboratory (LLNL) was able to recover and store for possible future use approximately 200 neutron criticality detectors and 20 master alarm panels from the former Rocky Flats Plant in Golden, Colorado when the plant was closed. The Criticality Safety Group participated in a facility analysis and evaluation, the engineering design and review process, as well as the refurbishment, testing, and recalibration of the Rocky Flats criticality alarm system equipment to be used in the new facility. In order to demonstrate the functionality and survivability of the neutron detectors to the effects of an actual criticality accident, neutron detector testing was performed at the French CEA Valduc SILENE reactor from October 7 to October 19, 2010. The neutron detectors were exposed to three criticality events or pulses generated by the SILENE reactor. The first excursion was performed with a bare or unshielded reactor, and the second excursion was made with a lead shielded/reflected reactor, and the third excursion with a polyethylene reflected core. These tests of the Rocky Flats neutron detectors were performed as a part of the 2010 Criticality Accident Alarm System Benchmark Measurements at the SILENE Reactor. The principal investigators for this series of experiments were Thomas M. Miller and John C. Wagner of the Oak Ridge National Laboratory, with Nicolas Authier and Nathalie Baclet of CEA Valduc. Several other organizations were also represented, including the Y-12 National Security Complex, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, CEA Saclay, and Babcock International Group.

  8. Diagonal perturbative triple corrections to the general-model-space state-universal coupled-cluster method: are they warranted and useful?

    NASA Astrophysics Data System (ADS)

    Li, Xiangzhu; Paldus, Josef

    2006-07-01

    The recently developed general-model-space (GMS) state-universal (SU) coupled-cluster (CC) approach, together with its version corrected for triples via a single-reference (SR) CCSD(T)-type correction of the diagonal elements of the effective Hamiltonian, is applied to several molecular electronic structure problems in order to assess their performance and the role of triples. These results are compared with an alternative handling of higher-than-pair clusters via the externally corrected SU CCSD method, denoted (M, N)-CCSD, which employs N wave functions of the M-reference CISD as an external source for N-reference SU CCSD. These methods are applied to the problem of bond breaking in the ground and excited states of the F2 and HF molecules, where the high-spin triplet component is also handled via the SR CCSD method. We further examine the vertical excitation energies of water and the basic spectroscopic constants (equilibrium geometries, harmonic frequencies, and excitation energies) for several low-lying states of oxygen. The results are encouraging and are discussed from the viewpoint of the applicability and usefulness of perturbative-type triple corrections. Laudatio

    We dedicate this paper to Professor Andrzej Sadlej, with good will and affection, on the occasion of his 65th birthday. The senior author recalls with fondness his first meeting with Andrzej at a quantum chemistry school in Kalatówki four decades ago. He always felt a special closeness to him as a fellow expatriate and was thus enormously pleased to personally witness his welcomed return to his homeland in 1997 and his installation in an enviable position at the Nicolas Copernicus University in Toruń. We both wish Andrzej many fruitful years ahead and much success in his endeavours in our field of scientific inquiry as well as in his personal life.

  9. Observation of Upper and Middle Tropospheric Clouds

    NASA Technical Reports Server (NTRS)

    Cox, Stephen K.

    1996-01-01

    The goal of this research has been to identify and describe the properties of climatically important cloud systems critically important to understanding their effects upon satellite remote sensing and the global climate. These goals have been pursued along several different but complementary lines of investigation: the design, construction, testing and application of instrumentation; the collection of data sets during Intensive Field Observation periods; the reduction and analysis of data collected during IFO's; and completion of research projects specifically designed to address important and timely research objectives. In the first year covered by this research proposal, three papers were authored in the refereed literature which reported completed analyses of FIRE 1 IFO studies initiated under the previous NASA funding of this topic area. microphysical and radiative properties of marine stratocumulus cloud systems deduced from tethered balloon observations were reported from the San Nicolas Island site of the first FIRE marine stratocumulus experiment. Likewise, in situ observations of radiation and dynamic properties of a cirrus cloud layer were reported from first FIRE cirrus IFO based from Madison, Wisconsin. In addition, application techniques were under development for monitoring cirrus cloud systems using a 403 MHz Doppler wind profiler system adapted with a RASS (Radio Acoustic Sounding System) and an infrared interferometer system; these instrument systems were used in subsequent deployments for the FIRE 2 Parsons, Kansas and FIRE 2 Porto Santo, ASTEX expeditions. In November 1991 and in June 1992, these two systems along with a complete complement of surface radiation and meteorology measurements were deployed to the two sites noted above as anchor points for the respective IFO'S. Subsequent research activity concentrated on the interpretation and integration of the IFO analyses in the context of the radiative properties of cloud systems and our ability

  10. Plasma chemical reduction of model corrosion brass layers prepared in soil

    NASA Astrophysics Data System (ADS)

    Radkova, Lucie; Mikova, Petra; Prikryl, Radek; Krcma, Frantisek

    2016-08-01

    The brass plates of (50 × 10 × 1) mm3 were prepared with model corrosion layer because the real archaeological artifacts could be damaged during the method optimization. Samples corroded naturally more than 2 years in the soil. Excavated samples were treated in the low pressure (150 Pa) quartz glass plasma reactor (90 cm long and 9.5 cm in diameter) which was surrounded by two external copper electrodes supplied by radio-frequency generator (13.56 MHz). The experiments were carried out in a hydrogen-argon gas mixture at mass flows of 30 sccm for hydrogen and 20 sccm for argon for 90 min. The plasma power was 100, 200, 300 and 400 W in continuous and pulsed mode. Maximum sample temperature was set at 120 °C. The whole process was monitored by optical emission spectroscopy and the obtained data were used to calculate the relative intensity of OH radicals and rotational temperature. The results showed that the higher power had the greater maximum intensity of the OH radicals and rapidly degraded the corrosion layer. Corrosion layer was not completely removed during the reduction, but due to the reactions which occur in the plasma corrosion layer became brittle and after plasma chemical treatment can be removed easily. Finally, the SEM-EDX analysis of the surface composition confirmed removal of chlorine and oxygen from the corrosion products layers. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  11. Treatment of industrial exhaust gases by a dielectric barrier discharge

    NASA Astrophysics Data System (ADS)

    Schmidt, Michael; Hołub, Marcin; Jõgi, Indrek; Sikk, Martin

    2016-08-01

    Volatile organic compounds (VOCs) in industrial exhaust gases were treated by a dielectric barrier discharge (DBD) operated with two different mobile power supplies. Together with the plasma source various gas diagnostics were used, namely fourier transform infrared (FTIR) spectroscopy, flame ionization detector (FID) and GC-MS. The analysis revealed that some exhaust gases consist of a rather complex mixture of hydrocarbons and inorganic compounds and also vary in pollutants concentration and flow rate. Thus, analysis of removal efficiencies and byproduct concentrations is more demanding than under laboratory conditions. This contribution presents the experimental apparatus used under the harsh conditions of industrial exhaust systems as well as the mobile power source used. Selected results obtained in a shale oil processing plant, a polymer concrete production facility and a yacht hull factory are discussed. In the case of total volatile organic compounds in oil processing units, up to 60% were removed at input energy of 21-37 J/L when the concentrations were below 500 mg/m3. In the yacht hull factory up to 74% of styrene and methanol were removed at specific input energies around 300 J/L. In the polymer concrete production site 195 ppm of styrene were decomposed with the consumption of 1.8 kJ/L. These results demonstrate the feasibility of plasma assisted methods for treatment of VOCs in the investigated production processes but additional analysis is needed to improve the energy efficiency. Contribution to the topical issue "6th Central European Symposium on Plasma Chemistry (CESPC-6)", edited by Nicolas Gherardi, Ester Marotta and Cristina Paradisi

  12. Postharvest dark skin spots in potato tubers are an oversuberization response to Rhizoctonia solani infection.

    PubMed

    Buskila, Yossi; Tsror Lahkim, Leah; Sharon, Michal; Teper-Bamnolker, Paula; Holczer-Erlich, Orly; Warshavsky, Shimon; Ginzberg, Idit; Burdman, Saul; Eshel, Dani

    2011-04-01

    Israeli farmers export 250,000 tons of potato tubers annually, ≈40,000 tons of which are harvested early, before skin set. In recent years, there has been an increase in the occurrence of dark skin spots on early-harvested potato tubers ('Nicola') packed in large bags containing peat to retain moisture. The irregular necrotic spots form during storage and overseas transport. Characterization of the conditions required for symptom development indicated that bag temperature after packing is 11 to 13°C and it reaches the target temperature (8°C) only 25 days postharvest. This slow decrease in temperature may promote the establishment of pathogen infection. Isolates from typical lesions were identified as Rhizoctonia spp., and Koch's postulates were completed with 25 isolates by artificial inoculation performed at 13 to 14°C. Phylogenetic analysis, using the internal transcribed spacer sequences (ITS1 and ITS2) of rDNA genes, assigned three isolates to anastomosis group 3 of Rhizoctonia solani. Inoculation of wounded tubers with mycelium of these R. solani isolates resulted in an oversuberization response in the infected area. With isolate Rh17 of R. solani, expression of the suberin biosynthesis-related genes StKCS6 and CYP86A33 increased 6.8- and 3.4-fold, respectively, 24 h postinoculation, followed by a 2.9-fold increase in POP_A, a gene associated with wound-induced suberization, expression 48 h postinoculation, compared with the noninoculated tubers. We suggest that postharvest dark spot disease is an oversuberization response to R. solani of AG-3 infection that occurs prior to tuber skin set.

  13. [The process of metropolizing Monterrey: there must be a long-term plan].

    PubMed

    Garza, G

    1994-01-01

    Monterrey achieved metropolitan status in the 1950s, when it expanded toward the municipios of Guadalupe and San Nicolas de los Garza. 93.6% of the total metropolitan population at that time lived in the municipio of Monterrey. Between 1950 and 1960 metropolitan Monterrey grew at an annual rate of 6.7% and the population nearly doubled. In the 1960s three other municipios were added to the metropolitan area, for a total of seven, and the share of the population living in the municipio of Monterrey dropped to 68.3%. From 1970 to 1980, metropolitan Monterrey's annual growth rate declined to 4.6%, and only one municipio was added. The municipio of Monterrey had a growth rate of 2.2%, while the surrounding municipios had rates several times higher. The process of metropolitanization decelerated considerably between 1980 and 1990, with an annual growth rate of 2.5% for the metropolitan region, the lowest since 1910-21. The municipio of Monterrey had a negative growth of -0.2% in the 1980s. Industrialization was the main determinant of metropolitan growth in Monterrey. Industrial growth was most rapid between 1950 and 1970, when 10.4% of national industry was located in Monterrey. Monterrey was seriously affected by the economic crisis of the 1980s, suffering a decline of 1.1% annually and a reduction of its share of national industry to 8.8% by 1988. If the economic recuperation of 1988-92 continues, Monterrey is projected to increase by 75% in population and 60% in urban area in the next 20 years, implying the need for tremendous infrastructural construction. Longterm planning must be carried out to minimize the problems of growth and size in Monterrey and to assure an adequate economic foundation for the metropolis.

  14. Bradley and Lacaille: Praxis as Passionate Pursuit of Exact Science

    NASA Astrophysics Data System (ADS)

    Wilson, C. A.

    1997-12-01

    From 1700 to 1800, astronomical observation and prediction improved in accuracy by an order of magnitude or more: by century's end astronomers could trust catalogued and predicted positions to within a few arcseconds. Crucial to this improvement were the discoveries of Bradley, which grew out of an endeavor of "normal science," the attempt to confirm with precision Robert Hooke's earlier supposed discovery of annual parallax in Gamma Draconis. On the theoretical side, Bradley's discoveries led to the quiet demise of two earlier doctrines, the Tychonic System and the Aristotelian and Cartesian doctrine of the instantaneous transmission of light. On the side of praxis, Bradley's discoveries meant that observational astronomy must be re-done from the ground up. In 1742 Nicolas-Louis Lacaille (1713-62), who had been admitted to the Paris Academie des Sciences only the year before, proposed to his astronomer colleagues that they take up this task as a cooperative enterprise. His proposal met with silence, but he undertook the project on his own, making it his life's work. By 1757 he had completed his Fundamenta Astronomiae, including a catalogue of 400 bright stars in which for the first time star positions were corrected for aberration and nutation. In 1758 he published his solar tables, the first to incorporate lunar and planetary perturbations as well as aberration and nutation. Lacaille's pendulum clock was not temperature-compensated, and his sextant poorly calibrated, but he was to some extent able to compensate for these flaws by bringing a massive number of observations to bear. Till the 1790s his Fundamenta Astronomiae and Tabulae Solares were important for the increments in accuracy they brought about, and for the inspiration they gave to later astronomers such as Delambre.

  15. Adaptive divergence despite strong genetic drift: genomic analysis of the evolutionary mechanisms causing genetic differentiation in the island fox (Urocyon littoralis).

    PubMed

    Funk, W Chris; Lovich, Robert E; Hohenlohe, Paul A; Hofman, Courtney A; Morrison, Scott A; Sillett, T Scott; Ghalambor, Cameron K; Maldonado, Jesus E; Rick, Torben C; Day, Mitch D; Polato, Nicholas R; Fitzpatrick, Sarah W; Coonan, Timothy J; Crooks, Kevin R; Dillon, Adam; Garcelon, David K; King, Julie L; Boser, Christina L; Gould, Nicholas; Andelt, William F

    2016-05-01

    The evolutionary mechanisms generating the tremendous biodiversity of islands have long fascinated evolutionary biologists. Genetic drift and divergent selection are predicted to be strong on islands and both could drive population divergence and speciation. Alternatively, strong genetic drift may preclude adaptation. We conducted a genomic analysis to test the roles of genetic drift and divergent selection in causing genetic differentiation among populations of the island fox (Urocyon littoralis). This species consists of six subspecies, each of which occupies a different California Channel Island. Analysis of 5293 SNP loci generated using Restriction-site Associated DNA (RAD) sequencing found support for genetic drift as the dominant evolutionary mechanism driving population divergence among island fox populations. In particular, populations had exceptionally low genetic variation, small Ne (range = 2.1-89.7; median = 19.4), and significant genetic signatures of bottlenecks. Moreover, islands with the lowest genetic variation (and, by inference, the strongest historical genetic drift) were most genetically differentiated from mainland grey foxes, and vice versa, indicating genetic drift drives genome-wide divergence. Nonetheless, outlier tests identified 3.6-6.6% of loci as high FST outliers, suggesting that despite strong genetic drift, divergent selection contributes to population divergence. Patterns of similarity among populations based on high FST outliers mirrored patterns based on morphology, providing additional evidence that outliers reflect adaptive divergence. Extremely low genetic variation and small Ne in some island fox populations, particularly on San Nicolas Island, suggest that they may be vulnerable to fixation of deleterious alleles, decreased fitness and reduced adaptive potential.

  16. Systematics and Molecular Phylogeny of the Family Oscarellidae (Homoscleromorpha) with Description of Two New Oscarella Species

    PubMed Central

    Gazave, Eve; Lavrov, Dennis V.; Cabrol, Jory; Renard, Emmanuelle; Rocher, Caroline; Vacelet, Jean; Adamska, Maja; Borchiellini, Carole; Ereskovsky, Alexander V.

    2013-01-01

    The family Oscarellidae is one of the two families in the class Homoscleromorpha (phylum Porifera) and is characterized by the absence of a skeleton and the presence of a specific mitochondrial gene, tatC. This family currently encompasses sponges in two genera: Oscarella with 17 described species and Pseudocorticium with one described species. Although sponges in this group are relatively well-studied, phylogenetic relationships among members of Oscarellidae and the validity of genus Pseudocorticium remain open questions. Here we present a phylogenetic analysis of Oscarellidae using four markers (18S rDNA, 28S rDNA, atp6, tatC), and argue that it should become a mono-generic family, with Pseudocorticium being synonymized with Oscarella, and with the transfer of Pseudocorticium jarrei to Oscarella jarrei. We show that the genus Oscarella can be subdivided into four clades, each of which is supported by either a small number of morphological characters or by molecular synapomorphies. In addition, we describe two new species of Oscarella from Norwegian fjords: O. bergenensis sp. nov. and O. nicolae sp. nov., and we compare their morphology, anatomy, and cytology with other species in this genus. Internal anatomical characters are similar in both species, but details of external morphology and particularly of cytological characters provide diagnostic features. Our study also confirms that O. lobularis and O. tuberculata are two distinct polychromic sibling species. This study highlights the difficulties of species identification in skeleton-less sponges and, more generally, in groups where morphological characters are scarce. Adopting a multi-marker approach is thus highly suitable for these groups. PMID:23737959

  17. Using species-specific paleotemperature equations with foraminifera: A case study in the Southern California Bight

    USGS Publications Warehouse

    Bemis, B.E.; Spero, H.J.; Thunell, R.C.

    2002-01-01

    Species-specific paleotemperature equations were used to reconstruct a record of temperature from foraminiferal ??18O values over the last 25 kyr in the Southern California Bight. The equations yield similar temperatures for the ??18O values of Globigerina bulloides and Neogloboquadrina pachyderma. In contrast, applying a single paleotemperature equation to G. bulloides and N. pachyderma ??18O yields different temperatures, which has been used to suggest that these species record the surface-to-thermocline temperature gradient. In Santa Barbara Basin, an isotopically distinct morphotype of G. bulloides dominates during glacial intervals and yields temperatures that appear too cold when using a paleotemperature equation calibrated for the morphotype common today. When a more appropriate paleotemperature equation is used for glacial G. bulloides, we obtain more realistic glacial temperatures. Glacial-interglacial temperature differences (G-I ??T) calculated in the present study indicate significant cooling (??? 8-10??C) throughout the Southern California Bight during the last glacial maximum (LGM). The magnitude of glacial cooling varies from ???8??C near the middle of the Southern California Bight (Tanner Basin and San Nicolas Basin) to ???9??C in the north (Santa Barbara Basin) and ???9.5-10??C in the south (Velero Basin and No Name Basin). Our temperature calculations agree well with previous estimates based on the modern analog technique. In contrast, studies using N. pachyderma coiling ratios, U37k??? indices, and transfer functions esfimate considerably warmer LGM temperatures and smaller G-I ??T. ?? 2002 Elsevier Science B.V. All rights reserved.

  18. List of Participants

    NASA Astrophysics Data System (ADS)

    2014-07-01

    Alba Paolo (Università di Torino) Becattini Francesco (Università di Firenze) Bombaci Ignazio (Università di Pisa) Bonaccorso Angela (INFN Pisa) Colonna Maria (INFN-LNS Catania) Coraggio Luigi (INFN Napoli) Covello Aldo (Università di Napoli) Di Toro Massimo (Università di Catania) De Angelis Giacomo (INFN-LNL Legnaro) Gargano Angela (INFN Napoli) Gattobigio Mario (INLN, Université de Nice-Sophia Antipolis, CNRS, France) Gensini Paolo (INFN Lecce) Giannini Mauro (Università di Genova) Girlanda Luca (Università del Salento) Giusti Carlotta (Università di Pavia) Greco Vincenzo (Università di Catania) Grossi Eduardo (Università di Firenze) Itaco Nunzio (Università di Napoli) Kievsky Alejandro (INFN Pisa) Lanza Edoardo (INFN Catania) Lavagno Andrea (Politecnico di Torino) Logoteta Domenico (Universidade de Coimbra, Coimbra, Portugal) Lo Iudice Nicola (Università di Napoli) Lombardo Maria Paola (INFN-LNF Frascati) Lo Meo Sergio (ENEA Bologna) Mannarelli Massimo (INFN-LNGS Assergi) Marcucci Laura Elisa (Università di Pisa) Matera Francesco (Università di Firenze) Orlandini Giuseppina (Università di Trento) Pacati Franco (Università di Pavia) Pederiva Francesco (Università di Trento) Pirrone Sara (INFN Catania) Puglisi Armando (Università di Catania) Radici Marco (INFN Pavia) Rinaldi Matteo (Università di Perugia) Roggero Alessandro (Università di Trento) Rolando Valentina (Università di Ferrara) Rosati Sergio (Università di Pisa) Ruggieri Marco (Università di Catania) Salmè Gianni (INFN Roma) Santopinto Elena (INFN Genova) Scopetta Sergio (Università di Perugia) Taiuti Mauro (Università di Genova) Vigezzi Enrico (INFN Milano) Viviani Michele (INFN Pisa) Vorabbi Matteo (Università di Pavia)

  19. Dependence of marine stratocumulus reflectivities on liquid water paths

    NASA Technical Reports Server (NTRS)

    Coakley, James A., Jr.; Snider, Jack B.

    1990-01-01

    Simple parameterizations that relate cloud liquid water content to cloud reflectivity are often used in general circulation climate models to calculate the effect of clouds in the earth's energy budget. Such parameterizations have been developed by Stephens (1978) and by Slingo and Schrecker (1982) and others. Here researchers seek to verify the parametric relationship through the use of simultaneous observations of cloud liquid water content and cloud reflectivity. The column amount of cloud liquid was measured using a microwave radiometer on San Nicolas Island following techniques described by Hogg et al., (1983). Cloud reflectivity was obtained through spatial coherence analysis of Advanced Very High Resolution Radiometer (AVHRR) imagery data (Coakley and Beckner, 1988). They present the dependence of the observed reflectivity on the observed liquid water path. They also compare this empirical relationship with that proposed by Stephens (1978). Researchers found that by taking clouds to be isotropic reflectors, the observed reflectivities and observed column amounts of cloud liquid water are related in a manner that is consistent with simple parameterizations often used in general circulation climate models to determine the effect of clouds on the earth's radiation budget. Attempts to use the results of radiative transfer calculations to correct for the anisotropy of the AVHRR derived reflectivities resulted in a greater scatter of the points about the relationship expected between liquid water path and reflectivity. The anisotropy of the observed reflectivities proved to be small, much smaller than indicated by theory. To critically assess parameterizations, more simultaneous observations of cloud liquid water and cloud reflectivities and better calibration of the AVHRR sensors are needed.

  20. Does the history of food energy units suggest a solution to "Calorie confusion"?

    PubMed

    Hargrove, James L

    2007-12-17

    The Calorie (kcal) of present U.S. food labels is similar to the original French definition of 1825. The original published source (now available on the internet) defined the Calorie as the quantity of heat needed to raise the temperature of 1 kg of water from 0 to 1 degrees C. The Calorie originated in studies concerning fuel efficiency for the steam engine and had entered dictionaries by 1840. It was the only energy unit in English dictionaries available to W.O. Atwater in 1887 for his popular articles on food and tables of food composition. Therefore, the Calorie became the preferred unit of potential energy in nutrition science and dietetics, but was displaced when the joule, g-calorie and kcal were introduced. This article will explain the context in which Nicolas Clément-Desormes defined the original Calorie and the depth of his collaboration with Sadi Carnot. It will review the history of other energy units and show how the original Calorie was usurped during the period of international standardization. As a result, no form of the Calorie is recognized as an SI unit. It is untenable to continue to use the same word for different thermal units (g-calorie and kg-calorie) and to use different words for the same unit (Calorie and kcal). The only valid use of the Calorie is in common speech and public nutrition education. To avoid ongoing confusion, scientists should complete the transition to the joule and cease using kcal in any context.

  1. Diurnal variation in the turbulent structure of the cloudy marine boundary layer during FIRE 1987

    NASA Technical Reports Server (NTRS)

    Hignett, Phillip

    1990-01-01

    During the 1987 FIRE marine stratocumulus experiment the U.K. Meteorological Office operated a set of turbulence probes attached to the tether cable of a balloon based on San Nicolas Island. Typically six probes were used; each probe is fitted with Gill propeller anemometers, a platinum resistance thermometer and wet and dry thermistors, to permit measurements of the fluxes of momentum, heat, and humidity. The orientation of each probe is determined from a pair of inclinometers and a three-axis magnetometer. Sufficient information is available to allow the measured wind velocities to be corrected for the motion of the balloon. On the 14 to 15 July measurements were made over the period 1530 to 1200 UTC and again, after a short break for battery recharging and topping-up the balloon, between 0400 to 0900 UTC. Data were therefore recorded from morning to early evening, and again for a period overnight. Six probes were available for the daytime measurements, five for the night. Data were recorded at 4 Hz for individual periods of a little over an hour. The intention was to keep a minimum of one probe at or just above cloud top; small changes in balloon height were necessary to accommodate changes in inversion height. The ability of the balloon system to make simultaneous measurements at several levels allows the vertical structure of the boundary layer to be displayed without resort to composites. Turbulent statistics were calculated from 2 hour periods, one straddling local noon and one at night. These were subdivided into half-hour averaging intervals for the evaluation of variances and fluxes.

  2. CENTAURUS A: THE INSIDE STORY

    NASA Technical Reports Server (NTRS)

    2002-01-01

    Astronomers have used NASA's Hubble Space Telescope to probe the core of the nearest active galaxy to Earth, Centaurus A. [UPPER LEFT] - A close-up high resolution Wide Field Planetary Camera 2 image of the dramatic dust disk which is thought to be the remnant of a smaller spiral galaxy that merged with the large elliptical galaxy. The shock of the collision compressed interstellar gas, precipitating a flurry of star formation and giving the material a fleecy pattern. Dark filaments of dust mixed with cold hydrogen gas are silhouetted against the incandescent yellow-orange glow from stars behind it. [LOWER RIGHT] - Hubble's Near Infrared Camera and Multi-Object Spectrometer was used to peer past the dust to discover a tilted disk of hot gas at the galaxy's center (white bar running diagonally across image center). This 130 light-year diameter disk encircles a suspected black hole which may be one billion times the mass of our Sun. The disk feeds material to presumably an inner, unresolved accretion disk that is made up of gas entrapped by the black hole. The red blobs near the disk are glowing gas clouds which have been heated up and ionized by the powerful radiation from the active nucleus. The false-color NICMOS image was taken on Aug. 11, 1997 at a wavelength of 1.87 microns ('Paschen alpha'), characteristic of ionized Hydrogen. Centaurus A (NGC 5128) Fast Facts Right Ascension: 13 : 25.5 (hours : minutes) Declination: -43 : 01 (degrees : minutes) Apparent Magnitude: 7.0 Apparent Diameter: 18.2 (arc minutes) Distance: 10 million light-years Constellation: Centaurus (southern sky) Credit: E.J. Schreier, (STScI) and NASA Team members are: Ethan J. Schreier, Alessandro Marconi, David J. Axon, Nicola Caon, Duccio Macchetto ( STScI), Alessandro Capetti - (Osservatorio Astronomico di Torino, Italy), James H. Hough, Stuart Young ( University of Hertfordshire, UK), and Chris Packham (Isaac Newton Group, Islas Canarias, SPAIN)

  3. Generation of ozone foam and its application for disinfection

    NASA Astrophysics Data System (ADS)

    Hiragaki, Keisuke; Ishimaru, Tomiya; Nakanishi, Masaru; Muraki, Ryouji; Nieda, Masanori; Yamabe, Chobei

    2015-07-01

    Generated ozone foam was applied to the disinfection of Pseudomonas fluorescens. The effect of disinfection has been confirmed experimentally and new equipment for the disinfection of hands using this ozone foam has been put on the market for the practical use. The ozone foam was produced in the foam generator after mixing the water including surfactant (30 mL/min) and air including ozone (1000 ppm = 2.14 g/m3 ~ 1600 ppm = 3.4 g/m3, 300 mL/min). The liquid-to-gas ratio is 100 L/m3. The concentration of dissolved ozone in the thin liquid films of the bubbles was about 3 mg/L which was measured by the chemical method of the KI absorption and titration of sodium thiosulfate solution. The disinfection test samples were prepared using the PET disk on which Pseudomonas fluorescens of its number of more than 108 were attached. Test sample was inserted into ozone foam set on the glass plate for one to 6 min. The survival rate log (N/N0 decreased with time and its value of about-2.6 (i.e., ~1/400) was obtained at 6 min (2 min × 3 times repeated). It was also confirmed that the ozone foam was useful for the disinfection of hands. For more effective disinfection (in case of taking a long time for foam melting), the ozone foam was broken by force and changed into ozone water by which the survival rate decreased ×4 (i.e., N/N0 = 1/10 000) at 4 ~ 6 min. Contribution to the topical issue "The 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV)", edited by Nicolas Gherardi, Ronny Brandenburg and Lars Stollenwark

  4. Anisotropy of thermal contraction controls deep hydrothermal circulation at oceanic ridges

    NASA Astrophysics Data System (ADS)

    Boudier, F.; Nicolas, A.; Mainprice, D.; Baronnet, A.

    2003-04-01

    A deep and high-T (up to 1000^oC) hydrothermal contamination of the oceanic crust at the ridge axis has been documented in the Oman ophiolite. In the deep and hot gabbros, the main water channels are submillimetric microcracks with a dominantly vertical attitude (Nicolas et al, in press). Sr and O isotopic investigations point to seawater as the most likely hydrothermal contaminant (Bosch et al. submitted). We propose that the mechanism allowing seawater ingression at temperatures above 700^oC is anisotropy of thermal contraction, opening microcracks that are controlled by fabric. The exceptionally large anisotropy of thermal contraction of single crystal of calcic plagioclase, when introduced in the strong lattice fabrics in the lower gabbros results in finding the maximum thermal contraction direction parallel to maximum crystals elongation L1. This direction in the oceanic ridge referential is horizontal and perpendicular to microcracks dominant orientation. This high-T hydrothermal alteration in gabbros reaches the Moho. In the underlying peridotites, preliminary Sr isotopic data on clinopyroxene from wehrlites suggest that seawater was able to ingress at crystallization temperature for clinopyroxene. Interestingly, in these peridotites with horizontal foliation, thermal contraction, calculated as above from fabrics and thermal expansion coefficients in olivine, is vertical, being responsible for subhorizontal cracking, as deduced from serpentine dominant veining. Thus, during off-axis drifting of newly accreted lithosphere, thermal contraction opens vertical cracks, favoring seawater ingression down to the Moho. Below, in peridotites, the horizontal microcrack system would favor closing of hydrothermal circuit at Moho level.

  5. [Pierre Bayen rediscovers the Essays of Jean Rey].

    PubMed

    Lafont, Olivier

    2014-10-01

    Jean Rey, a physician from The Bugue, a little town near Bergerac, published, in 1630, a book entitled "Essays" in which he explained the increase of the mass of lead, when it was strongly heated, by the fixation of a part of the air. This revolutionary publication was not received by the European scientists, because the Father Mersenne, "the secretary of learned Europe", was not able to repeat his experiments. Between 1774 and 1775, Pierre Bayen, who was a military apothecary, published his Works concerning the "precipitate per se", for us HgO, showing that when this compound was destroyed by heating, it produced a gas, and that the mass of this gas and the mass of the mercury obtained were equal to the mass of the "precipitate per se". He concluded that the phlogiston theory was contradictory with the results of the experiments. When, later on, Lavoisier published his important article on the increase of the mass of steal when it was heated in the air, he "forgot" to cite the Works of Bayen. In January 1775, Pierre Bayen published a letter in which he mentioned that he had discovered an exemplar of Jean Rey's book and explained that this physician of the 17th century had supposed the explanation that had been proved by Lavoisier. Nicolas Gobet then published a new edition of the "Essays" in 1777, but this new edition became itself quite rare. An inscription pencilled on the book kept by the British Museum pretends that all the exemplars Lavoisier could find were destroyed. It is not rigorous to conclude on a single document, especially when it is not signed, but it is sufficient to induce doubt.

  6. Zircon U-Pb geochronology and heavy mineral composition of the Camaná Formation, southern Peru: Constraints on sediment provenance and uplift of the Coastal and Western Cordilleras

    NASA Astrophysics Data System (ADS)

    Alván, Aldo; von Eynatten, Hilmar; Dunkl, István; Gerdes, Axel

    2015-08-01

    In the forearc of the Central Andes of southern Peru, the Cenozoic Camaná Basin (16°25‧S to 17°15‧S) forms a ∼NW-SE elongated depression filled with coarse-grained deltaic and fluvial deposits. These deposits are termed Camaná Formation. We have applied for the first time, advanced multi-method analytical techniques to sediments of the Camaná Formation in order to define precise sedimentation ages, unravel sediment provenance, and to explain its tectono-sedimentary evolution. Zircon U-Pb geochronology and multiple geological evidences suggest that the Camaná Formation ranges in age from Late Oligocene to Late Miocene, and may even extend into the Pliocene. We propose a provenance model for the Camaná Formation based on U-Pb geochronology, heavy mineral analysis, and single-grain mineral chemistry by LA-ICP-MS. This model suggests that sediments of the lower part of the Camaná Formation derive from rocks forming the Coastal Cordillera (i.e. the Arequipa Massif and the San Nicolas Batholith) and the widespread ignimbrites of the ∼24-10 Ma Huaylillas volcanic arc. In contrast, sediments of the upper part of the Camaná Formation derive predominantly from rocks forming the Western Cordillera (i.e. the Arequipa Massif, the Tacaza Group, and the Coastal Batholith) and products of the ∼10-3 Ma Lower Barroso volcanic arc). Accordingly, we infer that uplift of the Coastal Cordillera has strongly influenced deposition of the Camaná Formation since Late Oligocene. A marked shift in provenance within the Camaná Formation at around Middle to Late Miocene time (14-12 Ma) suggests drastic uplift of the Western Cordillera at that time. This uplift has triggered increased relief and erosion in the Western Cordillera, and subsequent deposition of fluvial conglomerates in the Camaná Basin.

  7. [The tobacco in the light of history and medicine].

    PubMed

    de Micheli, Alfredo

    2015-01-01

    Super trajectory is reported of tobacco from his first meeting with the European man October 15, 1492. This plant was known in Europe by the publications of the Sevillan physician Nicolas Monardes (1574), the relations of friar Andrés Thevet (1575) and the famous botanical treatise of Charles de l'Écluse (1605). The Swedish botanist Karl Linnaeus inclused tobacco plant in the family Solanaceae and deleted from this group other plants that were intermixed with it. Its botanical name (Nicotiana tabacum) derived from the surname of the French ambassador to Portugal, Jean Nicot of Villemain, who in 1560 sent it to the Queen Mother of France Cathérine de Medicis. The use of snuff quickly spread throughout Europe, were it became common in the seventeenth century. By the late eighteenth century in New Spain, in addition to cigars, cigarettes and due in packs of different content the tobacco is concocted and price. The preparation of the different presentations of snuff, tobacco made in factories in the capital and several provincial cities, originated in 1796 the creation of the first kindergartens for the children of those working in them. This thanks to the successful initiative of then viceroy Marquis of Branciforte. But contrary to the forecasts of Father F. J. Clavijero and Mrs. F. Calderón de la Barca, wife of the first Spanish diplomatic representative to the government of Mexico, the use of tobacco, with the passage of time, far from waning has been increasing in every social class. And now, more than men, women are smokers.

  8. IN MEMORIAM: In Memoriam: Alexander A Golovin and Alexei M Oparin In Memoriam: Alexander A Golovin and Alexei M Oparin

    NASA Astrophysics Data System (ADS)

    2008-10-01

    deep sorrow without him. Lesha was an extraordinary personality. His professionalism, strength of mind and kindness were a source of enthusiasm for his colleagues and students. Lesha_s early death is an irreplaceable loss. We will always remember him, and his scientific results and achievements will serve as the origin of ideas and inspiration for computational scientists. Sergei I Anisimov, Nail A Inogamov, Oleg M Belotserkovskii and Oleg Troshkin Moscow, Russia 21 Dec 2008

  9. Comparing field-based and numerically modelled reconstructions of the last Cordilleran Ice Sheet deglaciation over the Thompson Plateau, southern interior British Columbia, Canada.

    NASA Astrophysics Data System (ADS)

    Cripps, Jonathan; Brennand, Tracy; Seguinot, Julien; Perkins, Andrew

    2016-04-01

    Palaeoglaciological and palaeoclimate reconstructions of the deglaciation of the last Cordilleran Ice Sheet (CIS) over British Columbia (BC), Canada, are limited by the relative lack of understanding of the late-glacial ice sheet margins and dynamics. Deglaciation of the last CIS over the southern Interior Plateau of BC has been characterised as proceeding via stagnation and downwasting into dead ice lobes in valleys where ice was thickest. This conceptual model explains the apparent lack of moraines, which may otherwise imply active recession, and known palaeo-glacial lakes are explained as being dammed by these dead ice lobes. However, downwasting alone is at odds with coeval ice sheets which receded systematically towards their interiors. Presented here is a comparison between a new field-based reconstruction of the deglaciation of the northern Thompson Plateau, and ice sheet model results of the same area. Glacioisostatic tilts, reconstructed using mapped shoreline elevations, rise to the north-northwest at around 1.8 m/km, implying an ice surface slope, and likely active recession, towards the Coast Mountains. New reconstructions of the stages of glacial Lake Nicola (gLN), utilising field and aerial photographic mapping of shorelines, and sedimentology and geophysical surveys on ice-marginal and glaciolacustrine landforms, largely support this interpretation; the lake expanded and lowered to the north-northwest as progressively lower outlets were opened during ice retreat in this direction. Fields of newly discovered glaciotectonised moraines, grounding-line deposits and overridden glacial lake sediments record ice margin oscillations and minor readvances within gLN; the general alignment of these features further supports recession to the north-northwest. Numerical simulations of deglaciation of the area results in ice retreat to the north-northeast, which is inconsistent with the north-north-westward evolution of gLN. Excess precipitation over the eastern

  10. Medicine in the Encyclopédie (1751-1780) of Diderot and d'Alembert.

    PubMed

    De Santo, Natale G; Bisaccia, Carmela; Cirillo, Massimo; Richet, Gabriel

    2011-01-01

    On July 1, 1751, the royal Parisian printer Le Breton published the first volume of the Encyclopédie of Diderot and d'Alembert, a rational dictionary, in folio and in alphabetical order, sold by subscription. The whole work was completed in 1780 (a total of 35 volumes, of which 12 were of illustrations, 4 of supplements and 2 of indices). In 1782 it was followed by the Encyclopédie méthodique, printed by Panckoucke, which ended in 1832 with volume number 166. The frontispiece of the first volume, designed by Charles-Nicolas Cochin Jr. and engraved by Benoît-Louis Prévost showed the columns of an Ionic temple where the Truth appears between Reason and Philosophy. Reason is shown trying to break the veil of Truth, and Philosophy trying to embellish it. Below are the philosophers, their eyes fixed on Truth. Theology is on his knees with his back facing Truth, and seems to receive light from the top. The subsequent chain of figures depicts Memory, Ancient History, Modern History, Geometry, Astronomy and Physics. Below are Optics, Botany, Chemistry and Agriculture. On the bottom line one finds the representatives of arts and professions derived from science. In a 42-page preface ("Discours préliminaire") d'Alembert discussed the path to new knowledge as one "based on what we receive through senses. Ideas depend on senses." The medical collaborators were, or became, famous. Medicine was considered to be rooted in experiment, in patients and in measurements. Functions started to be described with numbers. It was the birth of determinism which was later reinforced by Magendie and Claude Bernard. Albrecht Haller, president of the Academy of Science at Göttingen, as well as a member of all European academies, wrote seminal entries. New accurate definitions appeared for life, disease, death, infections, plague, epidemics, hygiene, fevers and edema. Semiology, the study of signs, became the visible explanation of deranged function, diagnosis and prognosis.

  11. Extreme rainfall in Serbia, May 2014, simulation using WRF NMM and RainFARM: DRIHM project

    NASA Astrophysics Data System (ADS)

    Dekić, Ljiljana; Mihalović, Ana; Dimitrijević, Vladimir; Rebora, Nicola; Parodi, Antonio

    2015-04-01

    Extreme rainfall in Serbia, May 2014, simulation using WRF NMM and RainFARM: DRIHM project Ljiljana Dekić (1), Ana Mihalović (1), Vladimir Dimitrijević (1), Nicola Rebora (2), Antonio Parodi (2) (1)Republic HydroMeteorological Service of Serbia, Belgrade, Serbia, (2)CIMA Research Foundation, Savona, Italy In May 2014 Balkan region was affected with the continuous heavy rainfall, the heaviest in 120 years of recording observation, causing extensive flooding. Serbia suffered human casualties, huge infrastructure and industrial destruction and agricultural damage. Cyclone development and trajectory was very well predicted by RHMSS operational WRF NMM numerical model but extreme precipitation was not possible to predict with sufficient precision. Simulation of extreme rainfall situations using different numerical weather prediction models can indicate weakness of the model and point out importance of specified physical approach and parameterization schemes. The FP7 Distributed Research Infrastructure for Hydro-Meteorology DRIHM project gives a framework for using different models in forecasting extreme weather events. One of the DRIHM component is Rainfall Filtered Autoregressive Model RainFARM for stochastic rainfall downscaling. Objective of the DRIHM project was developing of standards and conversion of the data for seamless use of meteorological and hydrological models in flood prediction. This paper describes numerical tests and results of WRF NMM nonhydrostatic model and RainFARM downscaling applied on WRF NMM outputs. Different physics options in WRF NMM and their influence on precipitation amount were investigated. RainFARM was applied on every physical option with downscaling from 4km to 500m and 100m horizontal resolution and 100 ensemble members. We analyzed locations on the catchments in Serbia where flooding was the strongest and the most destructive. Statistical evaluation of ensemble output gives new insight into the sub scale precipitation

  12. Velocity Fluctuations in Gas-Fluidized Beds

    NASA Astrophysics Data System (ADS)

    Cody, G. D.

    1998-03-01

    Increasing gas flow through a bed of particles produces, above a sharp threshold, a fluidized state which exhibits many of the properties of a liquid. Fluidized beds play a major role in refining, chemicals, and power generation, but the physics of the fluidized state is still uncertain, due to the complexity of the particle/gas interactions, the broad distribution of particle size, and the measurement challenge. One consequence can be the failure of sophisticated computer models to predict performance. Another is the failure to resolve fundamental questions, for example the source of the initial stability/instability of the uniform fluidized state, first addressed by Jackson in 1963(R. Jackson, in Fluidization, edited by J. F. Davidson et al. (Academic Press, New York, 1985), p. 47-72; G. K. Batchelor, J. Fluid Mech. 193, 75-110 (1988); M. Nicolas. J. Chomaz, and E. Guazelli, Phys. Fluids 6, 3936-3944 (1994).). To meet the measurement challenge, we have obtained the first comprehensive data on the mean squared fluctuation velocity, or granular temperature, T*, of monodispersed glass spheres of diameter, D, in a fluidized bed, by a novel acoustic shot noise probe of random particle impact on the wall(G. D. Cody, D. J. Goldfarb, G. V. Storch, Jr., A. N. Norris, Powder Technology 87, 211-232 (1996); G. D. Cody and D. J. Goldfarb, in Dynamics in Small Confining Systems-III, eds. M. Drake et al, (MRS, Pittsburgh, Pa, 1997), 464, p. 325-338.). Applying a dense gas kinetic model(D. Gidaspow, Multiphase Flow and Fluidization (Academic Press, San Diego, 1994).) to this data predicts values of particulate pressure, and viscosity, which are in excellent agreement with recent experiments, and encouraged us to revisit the stability question. We find that the unanticipated seven-fold bifurcation observed in T* for D less than 150 microns is sufficient, using Jackson's model, to account for the accepted empirical boundary of stable initial uniform fluidization for the spheres

  13. Formation of dunite conduits in the mantle: observations from the Lanzo peridotite in NW-Italy

    NASA Astrophysics Data System (ADS)

    Müntener, O.; Pettke, T.; Piccardo, G.; Zanetti, A.

    2003-04-01

    London, Series A. 355, 283-318. 2. Boudier, F. &Nicolas, A. (1972) Schweizerische Mineralogische und Petrographische Mitteilungen 52, 39-56. 3. Boudier, F. (1978) Geological Society of America Bulletin 89, 1574-1591. 4. Dick, H. J. B. &Bullen, T. (1984) Contributions to Mineralogy and Petrology 86, 54-76.

  14. The impact of climate change on the BRICS economies: The case of insurance demand.

    NASA Astrophysics Data System (ADS)

    Ranger, N.; Surminski, S.

    2012-04-01

    incomes. The scale of the impacts and their direction depend to some extent on (re)insurer responses to the challenges of climate change. We outline five actions that could pave the way for future opportunities in the industry. Authors of the paper: Ranger, Nicola (Centre for Climate Change Economics and Policy/ Grantham Research Institute, London School of Economics, London, UK) and Surminski, Swenja (Centre for Climate Change Economics and Policy/ Grantham Research Institute, London School of Economics, London, UK)

  15. Late Holocene stratigraphy of the Tetimpa archaeological sites, northeast flank of Popocatepetl volcano, central Mexico

    USGS Publications Warehouse

    Panfil, M.S.; Gardner, T.W.; Hirth, K.G.

    1999-01-01

    Late Holocene (240 km2 on the east side of the volcano with >25 cm of tephra. Lavas from eruptive sequence I dammed drainage in the lowland area near the town of San Nicolas and caused local upstream deposition of as much as 30 m of lacustrine silts, clays, and sands. These lacustrine deposits record an eruptive hiatus for the Tetimpa area of about 750 14C yr: between ca. 2100 and ca. 1350 yr B.P., no major tephras were deposited in the Tetimpa area. In upland areas, this time period is represented by an unconformity and by Entisols formed in the top of pumice deposits and lavas from eruptive sequence I. Artifacts, agricultural furrows, and dwellings record human reoccupation of this surface. At the end of this hiatus, several lahars were deposited above the lacustrine sequence and locally above the Entisol in upland positions adjacent to streams. Between ca. 1350 and ca. 1200 yr B.P., tephras from eruptive sequence II buried these paleosols, occupation sites, lacustrine sediments, and lahars. Andesitic (~62% SiO2) pumice lapilli deposits in the Tetimpa area record three pumice-fall eruptions directed northeast and east of the crater. The first and smallest of these (maximum Tetimpa area thickness = 12 cm; >52 km2 covered by >25 cm) took place at ca. 1350 yr B.P. and was accompanied by pyroclastic surge events preserved in the Tetimpa area by charcoal, sand waves, and cross-stratified sand-sized tephra. At ca. 1200 yr B.P., the products of two Plinian-style events and additional pyroclastic surges reached the Tetimpa area. The largest of these tephra-fall events covered the Tetimpa area with 0.5-1 m of tephra and blanketed an area of >230 km2 with a thickness of >25 cm. The Tetimpa record confirms two of the four periods of explosive volcanism recognized by studies conducted around Popocatepetl in the past 30 yr. Eruptive sequence I corresponds to the explosive period between 2100 and 2500 yr B.P., and eruptive sequence II corresponds to the period between 900 and

  16. The link between aerospace industry and NASA during the Apollo years

    NASA Astrophysics Data System (ADS)

    Turcat, Nicolas

    2008-01-01

    Made in the frame of a French master on political history of USA in Paris IV La Sorbonne University, this subject is the third part of " The Economy of Apollo during the 60s". Nicolas Turcat is actually preparing his PhD in History of Innovation (DEA—Paris IV La Sorbonne). Our actual subject is " the link between aerospace industry and NASA during the Apollo years". This speech will highlight on some aspects of the link between NASA and aerospace industry. NASA could achieve the Apollo mission safely and under heavy financial pressure during the sixties due to a new type of organization for a civil agency; the contractor system. In fact, Military used it since the 1950s. And we will see how the development of this type of contract permitted a better interaction between the two parts. NASA would make another type of link with universities and technical institutes; a real brain trust was created, and between 1961 and 1967, 10,000 students worked and more than 200 universities on Apollo program. We will try to study briefly the procurement plan and process during the Apollo years. Without entering the " spin-offs debate", we will try to watch different aspects of the impacts and realities of the contractor and subcontractor system. We will see that would create a political debate inside USA when presidents Johnson and Nixon would decide to reduce Apollo program. Which states will benefit Apollo program? Or questions like how the debate at the end of the 1960s will become more and more political? Actually, almost 60% of the country's R&D was focused on Apollo, economical and moreover, political impacts would be great. We will try to study this under the light of different example: and particularly in California. The industrial and military complex was a part of the Apollo program. Apollo reoriented the aim of this complex for making it the first aerospace industry. Since this time, USA had not only acquired space ambition but real space capabilities. But more than

  17. A methodological approach to comparing pros and cons of delocalizing villages: socio-economic and technical issues

    NASA Astrophysics Data System (ADS)

    Guadagno, Eleonora; Iovine, Giulio G. R.; Petrucci, Olga; Forciniti, Pinuccia R.

    2014-05-01

    On 7th March 2005, prolonged rainfalls combined with snowfalls activated a wide complex rock slide-earth flow that partly destroyed the village of Cavallerizzo at Cerzeto (Calabria, Southern Italy). Superposed tectonic units made of Palaeozoic metamorphic rocks, overlain by Miocene-Quaternary clastic terrains, crop out in the study area. The main scarp of the landslide developed by a recent normal fault, striking N-S along the western margin of the Crati graben and extended ca. 25 km. In its lower part, the phenomenon evolved in two main earth-flow bodies that extended along minor drainages and then merged along the S. Nicola torrent. The sector affected by the instability actually belongs to a large-scale slope movement: the 2005 activation was in fact only a paroxysmal episode of a long history of slope deformations, noticed in the area since the XVIII century. Warning signs had been recorded for weeks before the collapse, and the threatened area had been put under monitoring by CNR-IRPI. When the movement accelerated, people had already been alerted and evacuated (329 out of 581 inhabitants of Cerzeto were sheltered in nearby villages), thus neither victims nor injured were recorded. As a whole, 124 buildings were severely damaged or destroyed, the main road was interrupted. Immediately after the 7th March 2005 event, the national Department for Civil Protection decided to evaluate the feasibility of delocalizing Cavallerizzo to another site. At this purpose, CNR-IRPI was asked to analysing the "geological suitability" of 3 different sites (Pianette, Amatine, and Colombra), pre-selected by the same Municipality of Cerzeto in accordance to the Civil Protection; the results of the study were completed in early Summer 2005. Between October 2007 and December 2011, a new settlement was realized by the Italian Government, and the houses were delivered to people once living at Cavallerizzo. In the last years, the socio-economic effects of the delocalization of

  18. The embalming, the scientific method and the paleopathology: the case of Gaetano Arrighi (1836).

    PubMed

    Ciranni, Rosalba; Caramella, Davide; Nenci, Riccardo; Fornaciari, Gino

    2005-01-01

    Since the most ancient times the problem of the artificial preservation of dead bodies has been an important object of study. In ancient and classic times the reasons leading to this practice were essentially of a religious and esoteric type, but in the modern age, following the development of medical and biological studies, embalming has assumed a more practical trend which is both medicine and scientific. The discovery of blood circulation has marked the scientific method which, in its various forms, has circulated all over Europe bringing fame to eminent anatomists such as Federico Ruysch (1638-1731), William (1718-1783) and John Hunter (1728-1793), Jean Nicolas Gannal (1791-1852), Giuseppe Tranchina, Laskowky and Brosch, who affirmed the embalming by endoarterial injection of conservation fluids making evisceration useless and obsolete. The advent of formalin and the introduction of new surgical and autoptic methods have made this practice gradually fall into disuse. For this reason, the mummy found in Leghorn (Tuscany, Central Italy) is of particular importance since was obtained applying the intravascular injection following the method, described by the Italian medical Giuseppe Tranchina in 1835. The mummified body belongs to Gaetano Arrighi, a prisoner in the Leghorn fortress. He was born in Arezzo in 1789 and died on March 1836 at the age of 47 in the Civil Hospital of Leghorn following pleurisy, as results in an annexed document. The day after his death Dr. Raimondo Barsanti from Pisa and Superintendent at the Leghorn hospital made up the Tranchina's method, which consisted in the injection of an arsencial -mercury solution inside of the blood vessels, giving rigidity and dark red color to the dead body. The excellent outcome of the intervention has made it possible, more than 160 years later, to study not only the method by which Arrighi's body was embalmed but also to perform a careful paleopathological imaging study by traditional X-rays and by Computer

  19. ["Nicolaus Ficke... who practiced physiognomy, astrology, etc. was also a bad man"].

    PubMed

    Lenke, Nils; Roudet, Nicolas

    2012-01-01

    This arcticle summarizes what could be learned from newly discovered documents about the biography of Nicolas von Vicken, first known reader of Kepler's "Astronomia Nova" and Kepler's partner in an exchange of more than a dozen letters over several years. Von Vicken stems from a rich and influential family of merchants in Riga, made noble by the Polish King (who ruled Riga at the time) in 1580. His education included legal studies at the universities of Königsberg, Leipzig and Rostock, partially overlapping with a stay of ten years at the Polish court. There von Vicken pursued family business but also served in an official court role. In 1600/1 von Vicken switched sides and started to serve the Swedish ruler (and later king) Duke Carl IX, who was at war with Poland to gain control over Riga and Livonia. In 1602 a mission for Sweden to Northern Germany brought him in conflict with Francis II, Duke of Saxe-Lauenburg, who accused von Vicken of withholding money from him, which was supposed to be used for hiring troops. Von Vicken, together with his brother Heinrich, was imprisoned, but could flee. During a mission to Maximilian III, Archduke of Austria, in 1599/1600 von Vicken had been initiated as an alchemist and astrologer through reading the works of Paracelsus and his future stations in life were influenced by this. These include an attempt to get employed at the Saxon court in Dresden, and stays in Wolfenbiittel and Halberstadt, both ruled by Duke Henry Julius of Brunswick-Lüneburg. Von Vicken offered various astrological and alchemical services to the Duke and private investors. With one of them he got into a serious conflict over the alleged non-fillment of a contract to produce steel in an alchemical way. During that von Vicken got imprisoned twice, in 1609 and between 1611 and 1614. A subsequent attempt to get employed by Ernst of Schaumburg left us with several letters that detail von Vicken's alchemical and astrological thinking, two of these are

  20. The search for worlds like our own.

    PubMed

    Fridlund, Malcolm; Eiroa, Carlos; Henning, Thomas; Herbst, Tom; Lammer, Helmut; Léger, Alain; Liseau, René; Paresce, Francesco; Penny, Alan; Quirrenbach, Andreas; Röttgering, Huub; Selsis, Franck; White, Glenn J; Absil, Olivier; Defrère, Denis; Hanot, C; Stam, Daphne; Schneider, Jean; Tinetti, Giovanna; Karlsson, Anders; Gondoin, Phillipe; den Hartog, Roland; D'Arcio, Luigi; Stankov, Anna-Maria; Kilter, Mikael; Erd, Christian; Beichman, Charles; Coulter, Daniel; Danchi, William; Devirian, Michael; Johnston, Kenneth J; Lawson, Peter; Lay, Oliver P; Lunine, Jonathan; Kaltenegger, Lisa

    2010-01-01

    The direct detection of Earth-like exoplanets orbiting nearby stars and the characterization of such planets-particularly, their evolution, their atmospheres, and their ability to host life-constitute a significant problem. The quest for other worlds as abodes of life has been one of mankind's great questions for several millennia. For instance, as stated by Epicurus approximately 300 BC: "Other worlds, with plants and other living things, some of them similar and some of them different from ours, must exist." Demokritos from Abdera (460-370 BC), the man who invented the concept of indivisible small parts-atoms-also held the belief that other worlds exist around the stars and that some of these worlds may be inhabited by life-forms. The idea of the plurality of worlds and of life on them has since been held by scientists like Johannes Kepler and William Herschel, among many others. Here, one must also mention Giordano Bruno. Born in 1548, Bruno studied in France and came into contact with the teachings of Nicolas Copernicus. He wrote the book De l'Infinito, Universo e Mondi in 1584, in which he claimed that the Universe was infinite, that it contained an infinite amount of worlds like Earth, and that these worlds were inhabited by intelligent beings. At the time, this was extremely controversial, and eventually Bruno was arrested by the church and burned at the stake in Rome in 1600, as a heretic, for promoting this and other equally confrontational issues (though it is unclear exactly which idea was the one that ultimately brought him to his end). In all the aforementioned cases, the opinions and results were arrived at through reasoning-not by experiment. We have only recently acquired the technological capability to observe planets orbiting stars other than 6 our Sun; acquisition of this capability has been a remarkable feat of our time. We show in this introduction to the Habitability Primer that mankind is at the dawning of an age when, by way of the

  1. MAX-DOAS observations and their application to the validation of satellite and model data in Wuxi, China

    NASA Astrophysics Data System (ADS)

    Wang, Y.; Wagner, T.; Xie, P.; Theys, N.; De Smedt, I.; Koukouli, M.; Stavrakou, T.; Beirle, S.; Li, A.

    2015-12-01

    Thomas Wagner1, Pinhua Xie2, Nicolas Theys3, Isabelle De Smedt3, MariLiza Koukouli4, Trissevgeni Stavrakou3, Steffen Beirle1, Ang Li2,1) Satellite group, Max Planck institute for Chemistry, Mainz, Germany2) Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, China 3) BIRA-IASB, Brussels, Belgium 4) Laboratory of Atmospheric Physics, Aristotle University of Thessaloniki, Greece From 2011 to 2014 a MAX-DOAS instrument developed by the Anhui Institute of Optics and Fine Mechanics institute is operated in Wuxi, China, which is locatd about 100 km west of Shanghai. We determine the tropospheric vertical column densities (VCDs), near surface concentrations and vertical profiles of aerosols, NO2, SO2, HCHO from the MAX-DOAS observations using the optimal estimation profile retrieval algorithm (refered to as "PriAM"). We verified the results by comparing them with results from independent techniques, such as sun photometer (AERONET), a visibility meter and a long-path DOAS instrument. We acquire the cloud and aerosol conditions using a cloud classification scheme based on the MAX-DOAS observations (Wang et al., AMTD, 2015). Based on the obtained results, we characterize the effect of the clouds on the trace gas and aerosol profiles retrieved from MAX-DOAS. Then we characterize the diurnal, annual and weekly variations of the trace gases and aerosols and validate the tropospheric trace gas VCDs derived from the Ozone Monitoring instrument (OMI) on the Aura satellite platform as well as the model results from the IMAGES, CHIMERE and Lotos-Euros models and analyse the agreement depending on the cloud and aerosol conditions. Besides the direct comparison with the satellite data, we also use the trace gas and aerosol profiles derived from MAX-DOAS to recalculate the air mass factor (AMF) for the satellite observations and to evaluate the corresponding improvement of the satellite VCDs. In some periods with strong aerosol pollution, we evaluate the

  2. Molecular evolution of rbcL in three gymnosperm families: identifying adaptive and coevolutionary patterns

    PubMed Central

    2011-01-01

    forward the conclusion that this evolutionary scenario has been possible through a complex interplay between adaptive mutations, often structurally destabilizing, and compensatory mutations. Our results unearth patterns of evolution that have likely optimized the Rubisco activity and uncover mutational dynamics useful in the molecular engineering of enzymatic activities. Reviewers This article was reviewed by Prof. Christian Blouin (nominated by Dr W Ford Doolittle), Dr Endre Barta (nominated by Dr Sandor Pongor), and Dr Nicolas Galtier. PMID:21639885

  3. The Search for Worlds Like Our Own

    NASA Astrophysics Data System (ADS)

    Fridlund, Malcolm; Eiroa, Carlos; Henning, Thomas; Herbst, Tom; Lammer, Helmut; Léger, Alain; Liseau, René; Paresce, Francesco; Penny, Alan; Quirrenbach, Andreas; Röttgering, Huub; Selsis, Franck; White, Glenn J.; Absil, Olivier; Defrère, D.; Schneider, Jean; Tinetti, Giovanna; Karlsson, Anders; Gondoin, Phillipe; den Hartog, Roland; D'Arcio, Luigi; Stankov, Anna-Maria; Kilter, Mikael; Erd, Christian; Beichman, Charles; Coulter, Daniel; Danchi, William; Devirian, Michael; Johnston, Kenneth J.; Lawson, Peter; Lay, Oliver P.; Lunine, Jonathan; Kaltenegger, Lisa

    2010-01-01

    The direct detection of Earth-like exoplanets orbiting nearby stars and the characterization of such planets -- particularly, their evolution, their atmospheres, and their ability to host life -- constitute a significant problem. The quest for other worlds as abodes of life has been one of mankind's great questions for several millennia. For instance, as stated by Epicurus 300 BC: Other worlds, with plants and other living things, some of them similar and some of them different from ours, must exist. Demokritos from Abdera (460-370 BC), the man who invented the concept of indivisible small parts - atoms - also held the belief that other worlds exist around the stars and that some of these worlds may be inhabited by life-forms. The idea of the plurality of worlds and of life on them has since been held by scientists like Johannes Kepler and William Herschel, among many others. Here, one must also mention Giordano Bruno. Born in 1548, Bruno studied in France and came into contact with the teachings of Nicolas Copernicus. He wrote the book De l'Infinito, Universo e Mondi in 1584, in which he claimed that the Universe was infinite, that it contained an infinite amount of worlds like Earth, and that these worlds were inhabited by intelligent beings. At the time, this was extremely controversial, and eventually Bruno was arrested by the church and burned at the stake in Rome in 1600, as a heretic, for promoting this and other equally confrontational issues (though it is unclear exactly which idea was the one that ultimately brought him to his end). In all the aforementioned cases, the opinions and results were arrived at through reasoning <80><94>not by experiment. We have only recently acquired the technological capability to observe planets orbiting stars other than 6our Sun; acquisition of this capability has been a remarkable feat of our time. We show in this introduction to the Habitability Primer that mankind is at the dawning of an age when, by way of the

  4. The Relative Lie Algebra Cohomology of the Weil Representation

    NASA Astrophysics Data System (ADS)

    Ralston, Jacob

    We study the relative Lie algebra cohomology of so(p,q) with values in the Weil representation piof the dual pair Sp(2k, R) x O(p,q ). Using the Fock model defined in Chapter 2, we filter this complex and construct the associated spectral sequence. We then prove that the resulting spectral sequence converges to the relative Lie algebra cohomology and has E0 term, the associated graded complex, isomorphic to a Koszul complex, see Section 3.4. It is immediate that the construction of the spectral sequence of Chapter 3 can be applied to any reductive subalgebra g ⊂ sp(2k(p + q), R). By the Weil representation of O( p,|q), we mean the twist of the Weil representation of the two-fold cover O(pq)[special character omitted] by a suitable character. We do this to make the center of O(pq)[special character omitted] act trivially. Otherwise, all relative Lie algebra cohomology groups would vanish, see Proposition 4.10.2. In case the symplectic group is large relative to the orthogonal group (k ≥ pq), the E 0 term is isomorphic to a Koszul complex defined by a regular sequence, see 3.4. Thus, the cohomology vanishes except in top degree. This result is obtained without calculating the space of cochains and hence without using any representation theory. On the other hand, in case k < p, we know the Koszul complex is not that of a regular sequence from the existence of the class ϕkq of Kudla and Millson, see te{KM2}, a nonzero element of the relative Lie algebra cohomology of degree kq. For the case of SO0(p, 1) we compute the cohomology groups in these remaining cases, namely k < p. We do this by first computing a basis for the relative Lie algebra cochains and then splitting the complex into a sum of two complexes, each of whose E0 term is then isomorphic to a Koszul complex defined by a regular sequence. This thesis is adapted from the paper, [BMR], this author wrote with his advisor John Millson and Nicolas Bergeron of the University of Paris.

  5. CALL FOR PAPERS: Special issue on Spin Glasses

    NASA Astrophysics Data System (ADS)

    Coolen, Ton; Nishimori, Hidetoshi; Sourlas, Nicolas; Wong, Michael

    2007-10-01

    This is a call for contributions to a special issue of Journal of Physics A: Mathematical and Theoretical dedicated to the subject of the conference `Viewing The World Through Spin Glasses', in honour of David Sherrington on the occasion of his 65th birthday, 31 August-1 September 2007 (http://www.nottingham.ac.uk/\\verb.~.ppzjpg/DS2007/). Invited speakers and participants at that meeting and other researchers working in the field are invited to submit a research paper to this issue. The Editorial Board has invited Ton Coolen, Hidetoshi Nishimori, Nicolas Sourlas and Michael Wong 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 conference (see the website of the conference http://www.nottingham.ac.uk/\\verb.~.ppzjpg/DS2007/). •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 either contain significant additional new results and/or insights or give 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 the following: •The DEADLINE for submission of contributions is 1 December 2007. This deadline will allow the special issue to appear in July 2008. •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 Theoretical 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

  6. Nonsynonymous substitution rate (Ka) is a relatively consistent parameter for defining fast-evolving and slow-evolving protein-coding genes

    PubMed Central

    2011-01-01

    parameter to sort genes by evolution rate and can also provide a way to categorize common protein functions and define their interaction networks, either pair-wise or in defined lineages or subgroups. Evaluating gene evolution based on Ka and Ks calculations can be done with large datasets, such as mammalian genomes. Reviewers This article has been reviewed by Drs. Anamaria Necsulea (nominated by Nicolas Galtier), Subhajyoti De (nominated by Sarah Teichmann) and Claus O. Wilke. PMID:21342519

  7. Prokaryotic evolution and the tree of life are two different things

    PubMed Central

    Bapteste, Eric; O'Malley, Maureen A; Beiko, Robert G; Ereshefsky, Marc; Gogarten, J Peter; Franklin-Hall, Laura; Lapointe, François-Joseph; Dupré, John; Dagan, Tal; Boucher, Yan; Martin, William

    2009-01-01

    study their evolution. Ultimately, the plurality of evolutionary patterns and mechanisms involved, such as the discontinuity of the process of evolution across the prokaryote-eukaryote divide, summons forth a pluralistic approach to studying evolution. Reviewers This article was reviewed by Ford Doolittle, John Logsdon and Nicolas Galtier. PMID:19788731

  8. Homoplasy in genome-wide analysis of rare amino acid replacements: the molecular-evolutionary basis for Vavilov's law of homologous series

    PubMed Central

    Rogozin, Igor B; Thomson, Karen; Csürös, Miklós; Carmel, Liran; Koonin, Eugene V

    2008-01-01

    . Conclusion The level of homoplasy observed here appears to be low enough to justify the utility of RGC_CAMs and other types of RGCs for resolution of hard problems in phylogeny. Parallel changes, one of the major classes of events leading to homoplasy, occur much more often in relatively recently diverged lineages than in those separated from their last common ancestor by longer time intervals of time. This pattern seems to provide the molecular-evolutionary underpinning of Vavilov's law of homologous series and is readily interpreted within the framework of the covarion model of molecular evolution. Reviewers This article was reviewed by Alex Kondrashov, Nicolas Galtier, and Maximilian Telford and Robert Lanfear (nominated by Laurence Hurst). PMID:18346278

  9. [The neuroanatomy of Juan Valverde de Amusco and medicine at the time of the Spanish renaissance].

    PubMed

    Martín Araguz, A; Bustamante Martínez, C; Toledo León, D; López Gómez, M; Moreno Martínez, J M

    Juan Valverde de Amusco (c. 1525-c. 1564) is considered to have been the most important Spanish anatomist of the XVI century. A follower of Vesalius, he increased and divulged knowledge of anatomy during the Renaissance and his book The history of the composition of the human body was printed in Rome in 1556. The objective of this paper is to study the neuroanatomy in this book and present unpublished biographical data and describe the main contributions of this Castilian doctor to the neurosciences, in the context of Spanish medicine during the Renaissance period. He was born in the town of Hamusco (today Amusco) in the province of Palencia, which belonged to the Crown of Castile. Juan Valverde emigrated to Italy to improve his scientific knowledge. He carried out anatomical studies using the then revolutionary method of direct observation, as opposed to the Galenic criteria of authority inherited from the Medieval period. He trained in Padua under Realdo Colombo and lived in Rome where he practiced medicine until his death, becoming deservedly famous. He did not return to Spain since in the Spanish universities of the time there was a mentality which was reactionary to modern anatomy. His works, published in Italy but in the Spanish language, give an idea of the power of the Crown of Castile in the Europe of that period. The book is profusely illustrated with the first illustrations ever published in the history of printing, drawn by Nicolas Beatrizet. The book was sold widely and was translated and reedited on many occasions, until well into the XVIII century. For the first time Valverde made precise references to the minor circulation. He was the first anatomist to describe the muscles for movement of the eye correctly and the intracranial course of the carotid arteries. In his work he made the first drawing of the stapes, described by the Valencian Luis Collado. Vesalius and Valverde contributed decisively to the beginnings of modern neuroanatomy. Thanks to

  10. A comparative study of photoinduced deformation in azobenzene containing polymer films.

    PubMed

    Yadavalli, Nataraja Sekhar; Loebner, Sarah; Papke, Thomas; Sava, Elena; Hurduc, Nicolae; Santer, Svetlana

    2016-03-07

    In this paper two groups supporting different views on the mechanism of light induced polymer deformation argue about the respective underlying theoretical conceptions, in order to bring this interesting debate to the attention of the scientific community. The group of Prof. Nicolae Hurduc supports the model claiming that the cyclic isomerization of azobenzenes may cause an athermal transition of the glassy azobenzene containing polymer into a fluid state, the so-called photo-fluidization concept. This concept is quite convenient for an intuitive understanding of the deformation process as an anisotropic flow of the polymer material. The group of Prof. Svetlana Santer supports the re-orientational model where the mass-transport of the polymer material accomplished during polymer deformation is stated to be generated by the light-induced re-orientation of the azobenzene side chains and as a consequence of the polymer backbone that in turn results in local mechanical stress, which is enough to irreversibly deform an azobenzene containing material even in the glassy state. For the debate we chose three polymers differing in the glass transition temperature, 32 °C, 87 °C and 95 °C, representing extreme cases of flexible and rigid materials. Polymer film deformation occurring during irradiation with different interference patterns is recorded using a homemade set-up combining an optical part for the generation of interference patterns and an atomic force microscope for acquiring the kinetics of film deformation. We also demonstrated the unique behaviour of azobenzene containing polymeric films to switch the topography in situ and reversibly by changing the irradiation conditions. We discuss the results of reversible deformation of three polymers induced by irradiation with intensity (IIP) and polarization (PIP) interference patterns, and the light of homogeneous intensity in terms of two approaches: the re-orientational and the photo-fluidization concepts. Both agree

  11. Laboratory and numerical simulation of internal wave attractors and their instability.

    NASA Astrophysics Data System (ADS)

    Brouzet, Christophe; Dauxois, Thierry; Ermanyuk, Evgeny; Joubaud, Sylvain; Sibgatullin, Ilias

    2015-04-01

    .-P. A., Geometric focusing of internal waves. J. Fluid Mech, 1995,. 300, 1-41 L. R. M. Maas, D. Benielli, J. Sommeria, and F.-P. A. Lam, Nature (London) 388, 557 (1997). 2. Dauxois, Thierry; Young, W., Journal of Fluid Mechanics, 1999, vol. 390, Issue 01, p.271-295 3. Grisouard, N., Staquet, C., Pairaud, I., 2008, Journal of Fluid Mechanics, 614, 1 4. Scolan, H., Ermanyuk, E., Dauxois, T., 2013, Physical Review Letters, 110, 234501 5. Mercier, Matthieu J.; Garnier, Nicolas B.; Dauxois, Thierry Reflection and diffraction of internal waves analyzed with the Hilbert transform Physics of Fluids, Volume 20, Issue 8, pp. 086601-086601-10 (2008).

  12. Polysomnographic Findings in a Cohort of Chronic Insomnia Patients with Benzodiazepine Abuse

    PubMed Central

    Mazza, Marianna; Losurdo, Anna; Testani, Elisa; Marano, Giuseppe; Di Nicola, Marco; Dittoni, Serena; Gnoni, Valentina; Di Blasi, Chiara; Giannantoni, Nadia Mariagrazia; Lapenta, Leonardo; Brunetti, Valerio; Bria, Pietro; Janiri, Luigi; Mazza, Salvatore; Della Marca, Giacomo

    2014-01-01

    Study Objectives: To evaluate sleep modifications induced by chronic benzodiazepine (BDZ) abuse. Methods: Cohort study, comparison of sleep measures between BDZs abusers and controls. Drug Addiction Unit (Institute of Psychiatry) and Unit of Sleep Disorders (Institute of Neurology) of the Catholic University in Rome. Six outpatients affected by chronic BDZ abuse were enrolled, (4 men, 2 women, mean age 53.3 ± 14.8, range: 34-70 years); 55 healthy controls were also enrolled (23 men, 32 women, mean age 54.2 ± 13.0, range: 27-76 years). All patients underwent clinical evaluation, psychometric measures, ambulatory polysomnography, scoring of sleep macrostructure and microstructure (power spectral fast-frequency EEG arousal, cyclic alternating pattern [CAP]), and heart rate variability. Results: BDZ abusers had relevant modification of sleep macrostructure and a marked reduction of fast-frequency EEG arousal in NREM (patients: 6.6 ± 3.7 events/h, controls 13.7 ± 4.9 events/h, U-test: 294, p = 0.002) and REM (patients: 8.4 ± 2.4 events/h, controls 13.3 ± 5.1 events/h, U-test: 264, p = 0.016), and of CAP rate (patients: 15.0 ± 8.6%, controls: 51.2% ± 12.1%, U-test: 325, p < 0.001). Discussion: BDZ abusers have reduction of arousals associated with increased number of nocturnal awakenings and severe impairment of sleep architecture. The effect of chronic BDZ abuse on sleep may be described as a severe impairment of arousal dynamics; the result is the inability to modulate levels of vigilance. Citation: Mazza M; Losurdo A; Testani E; Marano G; Di Nicola M; Dittoni S; Gnoni V; Di Blasi C; Giannantoni NM; Lapenta L; Brunetti V; Bria P; Janiri L; Mazza S; Della Marca G. Polysomnographic findings in a cohort of chronic insomnia patients with benzodiazepine abuse. J Clin Sleep Med 2014;10(1):35-42. PMID:24426818

  13. Long-Term Care Financing: Lessons From France

    PubMed Central

    Doty, Pamela; Nadash, Pamela; Racco, Nathalie

    2015-01-01

    Context An aging population leads to a growing demand for long-term services and supports (LTSS). In 2002, France introduced universal, income-adjusted, public long-term care coverage for adults 60 and older, whereas the United States funds means-tested benefits only. Both countries have private long-term care insurance (LTCI) markets: American policies create alternatives to out-of-pocket spending and protect purchasers from relying on Medicaid. Sales, however, have stagnated, and the market's viability is uncertain. In France, private LTCI supplements public coverage, and sales are growing, although its potential to alleviate the long-term care financing problem is unclear. We explore whether France's very different approach to structuring public and private financing for long-term care could inform the United States’ long-term care financing reform efforts. Methods We consulted insurance experts and conducted a detailed review of public reports, academic studies, and other documents to understand the public and private LTCI systems in France, their advantages and disadvantages, and the factors affecting their development. Findings France provides universal public coverage for paid assistance with functional dependency for people 60 and older. Benefits are steeply income adjusted and amounts are low. Nevertheless, expenditures have exceeded projections, burdening local governments. Private supplemental insurance covers 11% of French, mostly middle-income adults (versus 3% of Americans 18 and older). Whether policyholders will maintain employer-sponsored coverage after retirement is not known. The government's interest in pursuing an explicit public/private partnership has waned under President François Hollande, a centrist socialist, in contrast to the previous center-right leader, President Nicolas Sarkozy, thereby reducing the prospects of a coordinated public/private strategy. Conclusions American private insurers are showing increasing interest in long

  14. Increased winds in California's Channel Islands; Evaluation of trends in reanalysis model back-casts over the last half century with implications for human impacts

    NASA Astrophysics Data System (ADS)

    Katz, S. L.

    2011-12-01

    As elsewhere, in the Southern California Bight (SCB) the role of coastal winds in driving local ocean circulation has lead to extensive research on the character of the atmospheric boundary layer, and the recognition that wind stress and curl have increased in the recent past. However, around Northern Channel Islands in the SCB, local mariners have claimed that recently conditions have gotten perceptibly windier. The general pattern of winds in this area include strong equartorward flow along the central California coast outside the SCB and discretely weaker flow in the inner SCB with a pronounced transition south and east of Point Conception. Increased surface winds have numerous implications for local commerce and maritime safety, including limitations on days at sea by fishermen, tourists and commercial traffic. However, human perception of environmental conditions are often biased by perceptions of extreme events as representative of larger scale or longer term conditions. To evaluate if recent perceptions are accurate, we evaluated trends in surface winds generated by NCAR/NCEP and European Center for Medium Range Weather Forecasts (ECMWF) reanalysis models. Reanalysis back-casts revealed that indeed surface winds in the areas of the outer Southern California Bight are increasingly windy on average, and that averages are increasing due to increasing frequency of wind events, rather than the entire distribution of winds shifting to higher speeds. In some localized areas the number of days within a year that exceed 20knots (10.31 m/s) on average are increasing at a rate of one additional day per year in the NCAR/NCEP data. The utility of 20knots is this is wind speed that can trigger a small craft warning from the US Coast Guard, and which will in turn affect human activity on the sea. The spatial distribution of the increasing trends indicates that there is a focus of increasing winds to the South of Point Conception and North West of San Nicolas Island within

  15. Nikolay Kirov Nikolov

    NASA Astrophysics Data System (ADS)

    Petrov, Minko; Reynolds, Steve

    2014-12-01

    Committee of the Republic of Bulgaria during 1996. Nikolay Kirov was a key figure in the organization, promotion and success of the International School on Condensed Matter Physics (ISCMP), where he was able to use his network of international contacts to excellent effect. He served as Scientific Secretary (1988-1990), Chairman and Editor of the ISCMP Proceedings (1992-1998), and as Chairman Emeritus (2002-2012). Prof. Kirov is an Honorary Member of the Institute of Solid State Physics. He received the Honorary Diploma 'Nicola Obreshkov' in 1986 and the "Marin Drinov" Sign of Honour BAS (on a ribbon) in 1998, for achievements in the physical and mathematical sciences. He was also honoured outside his native Bulgaria, receiving a Gold Medal from Wroclaw University, Poland, in recognition of successful scientific collaborations in the area of molecular structure.

  16. The Last Universal Common Ancestor: emergence, constitution and genetic legacy of an elusive forerunner

    PubMed Central

    Glansdorff, Nicolas; Xu, Ying; Labedan, Bernard

    2008-01-01

    was born complex and the LUCA displayed that heritage. It had the "body "of a mesophilic eukaryote well before maturing by endosymbiosis into an organism adapted to an atmosphere rich in oxygen. Abundant indications suggest reductive evolution of this complex and heterogeneous entity towards the "prokaryotic" Domains Archaea and Bacteria. The word "prokaryote" should be abandoned because epistemologically unsound. Reviewers This article was reviewed by Anthony Poole, Patrick Forterre, and Nicolas Galtier. PMID:18613974

  17. Exergy and the economic process

    NASA Astrophysics Data System (ADS)

    Karakatsanis, Georgios

    2016-04-01

    theoretically and quantitatively. Keywords: 2nd Law, physical work, heat gradient, Carnot Heat Engine, exergy, energy, reference environment, econosystems, irreversibility, entropy, scarcity, resource degradation, pollution References 1. Ayres, Robert U. and Benjamin Warr (2009), The Economic Growth Engine: How Energy and Work Drive Material Prosperity, Edward Elgar and IIASA 2. Boulding, Kenneth E. (1978), Ecodynamics: A New Theory of Societal Evolution, Sage Publication 3. Chen, Jing (2005), The Physical Foundations of Economics: An Analytic Thermodynamic Theory, World Scientific 4. Roegen, Nicolas Georgescu (1971), The Entropy Law and the Economic Process, Harvard University Press

  18. Hominin responses to environmental changes during the Middle Pleistocene in Central and Southern Italy

    NASA Astrophysics Data System (ADS)

    Orain, R.; Lebreton, V.; Russo Ermolli, E.; Sémah, A.-M.; Nomade, S.; Shao, Q.; Bahain, J.-J.; Thun Hohenstein, U.; Peretto, C.

    2012-10-01

    The palaeobotanical record of early Palaeolithic sites from Western Europe indicates that hominins settled in different kinds of environments. During the "Mid-Pleistocene Transition (MPT)", from about 1 to 0.6 Ma, the transition from 41-ka to 100-ka dominant climatic oscillations, occurring within a long-term cooling trend, was associated with an aridity crisis which strongly modified the ecosystems. Starting from the MPT the more favorable climate of central and southern Italy provided propitious environmental conditions for long-term human occupations even during the glacial times. In fact, the human strategy of territory occupation was certainly driven by the availabilities of resources. Prehistoric sites such as Notarchirico (ca. 680-600 ka), La Pineta (ca. 600-620 ka), Gaudo San Nicola (ca. 380-350 ka) or Ceprano (ca. 345-355 ka) testify to a preferential occupation of the central and southern Apennines valleys during interglacial phases, while later interglacial occupations were oriented towards the coastal plains, as attested by the numerous settlements of the Roma basin (ca. 300 ka). Faunal remains indicate that human subsistence behaviors benefited of a diversity of exploitable ecosystems, from semi-open to closed environments. In central and southern Italy, several palynological records have already illustrated the regional and local scale vegetation dynamic trends. During the Middle Pleistocene climate cycles, mixed mesophytic forests developed during the interglacial periods and withdrew in response to increasing aridity during the glacial episodes. New pollen data from the Boiano basin (Molise, Italy), attest to the evolution of vegetation and climate between OIS 13 and 9 (ca. 500 to 300 ka). In this basin, the persistence of high edaphic humidity, even during the glacial phases, could have favored the establishment of a refuge area for the arboreal flora and provided subsistence resources for the animal and hominin communities during the Middle

  19. Hominin responses to environmental changes during the Middle Pleistocene in central and southern Italy

    NASA Astrophysics Data System (ADS)

    Orain, R.; Lebreton, V.; Russo Ermolli, E.; Sémah, A.-M.; Nomade, S.; Shao, Q.; Bahain, J.-J.; Thun Hohenstein, U.; Peretto, C.

    2013-03-01

    The palaeobotanical record of early Palaeolithic sites from Western Europe indicates that hominins settled in different kinds of environments. During the "mid-Pleistocene transition (MPT)", from about 1 to 0.6 Ma, the transition from 41- to 100-ka dominant climatic oscillations, occurring within a long-term cooling trend, was associated with an aridity crisis which strongly modified the ecosystems. Starting from the MPT the more favourable climate of central and southern Italy provided propitious environmental conditions for long-term human occupations even during the glacial times. In fact, the human strategy of territory occupation was certainly driven by the availabilities of resources. Prehistoric sites such as Notarchirico (ca. 680-600 ka), La Pineta (ca. 600-620 ka), Guado San Nicola (ca. 380-350 ka) or Ceprano (ca. 345-355 ka) testify to a preferential occupation of the central and southern Apennines valleys during interglacial phases, while later interglacial occupations were oriented towards the coastal plains, as attested by the numerous settlements of the Roma Basin (ca. 300 ka). Faunal remains indicate that human subsistence behaviours benefited from a diversity of exploitable ecosystems, from semi-open to closed environments. In central and southern Italy, several palynological records have already illustrated the regional- and local-scale vegetation dynamic trends. During the Middle Pleistocene climate cycles, mixed mesophytic forests developed during the interglacial periods and withdrew in response to increasing aridity during the glacial episodes. New pollen data from the Boiano Basin (Molise, Italy) attest to the evolution of vegetation and climate between MIS 13 and 9 (ca. 500 to 300 ka). In this basin the persistence of high edaphic humidity, even during the glacial phases, could have favoured the establishment of a refuge area for the arboreal flora and provided subsistence resources for the animal and hominin communities during the Middle

  20. A comparative summary on streamers of positive corona discharges in water and atmospheric pressure gases

    NASA Astrophysics Data System (ADS)

    Tachibana, Kunihide; Motomura, Hideki

    2015-07-01

    medium density between water and gases. Contribution to the topical issue "The 14th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XIV)", edited by Nicolas Gherardi, Ronny Brandenburg and Lars Stollenwark

  1. A database of crystal preferred orientation of olivine in upper mantle rocks

    NASA Astrophysics Data System (ADS)

    Mainprice, D.

    2012-12-01

    Olivine is the most volumetrically abundant mineral in the Earth's upper mantle, as such it dominates the mechanical and physical properties and has a controlling influence of the geodynamics of plate tectonics. Since the pioneering work of Hess and others we know that seismic anisotropy of the shallow mantle is related to olivine and it's crystal preferred orientation (CPO). With advent of plate tectonics the understanding of the key role of peridotite rocks became a major scientific objective and the measurement CPO of olivine in upper mantle samples became an important tool for studying the kinematics of these rocks. Our group originally lead by Adolphe Nicolas introduced the systematic use of CPO measured by U-stage for field studies all over the world for over 30 years, this tradition was extended in last 15 years by the use of electron back-scattered diffraction (EBSD) to study of CPO and the associated digital microstructure. It is an appropriate time to analysis this significant database of olivine CPO, which represents the work of our group, both present and former members, as well as collaborating colleagues. It is also interesting to compare the natural record as illustrated by our database in the light of recent experimental results stimulated by the extended ranges in temperature, pressure and finite strain, as well as intrinsic olivine variables such as hydrogen content. To analysis the database, which is heterogeneous because it is constructed from the individual work of many people over a 45 year period containing U-stage data and EBSD measurements (manual indexing point per grain, automatic indexing one point per grain, automatic indexing gridded mapping data) of various formats, we need a flexible software tool that can handle large volumes of data in consistent way. We have used the state-of-art open source MTEX toolbox for quantitative texture analysis. MTEX is a scriptable MATLAB toolbox, which permits all aspects of quantitative texture

  2. Biofilm development in a hotspot of mixing between shallow and deep groundwater in a fractured aquifer: field evidence from joint flow, chemical and microbiological characterization

    NASA Astrophysics Data System (ADS)

    Bochet, Olivier; Le Borgne, Tanguy; Pédrot, Mathieu; Labasque, Thierry; Lavenant, Nicolas; Petton, Christophe; Dufresne, Alexis; Ben Maamar, Sarah; Chatton, Eliot; De la Bernardie, Jérôme; Aquilina, Luc

    2015-04-01

    Biofilm development in a hotspot of mixing between shallow and deep groundwater in a fractured aquifer: field evidence from joint flow, chemical and microbiological characterization Olivier Bochet1, Tanguy Le Borgne1, Mathieu Pédrot1, Thierry Labasque1, Nicolas Lavenant1, Christophe Petton1, Alexis Dufresne2,Sarah Ben Maamar1-2, Eliot Chatton1, Jérôme de la Bernardie1, Luc Aquilina1 1: Géosciences Rennes, CNRS UMR 6118, Université de Rennes 1, Campus de Beaulieu bât 14B, Rennes, France 2: Ecobio, CNRS UMR 6553, Université de Rennes 1, Campus de Beaulieu, bât 14, Rennes, France Biofilms play a major role in controlling the fluxes and reactivity of chemical species transported in hydrological systems. Their development can have either positive impacts on groundwater quality (e.g. attenuation of contaminants under natural or stimulated conditions), or possible negative effects on subsurface operations (e.g. bio-clogging of geothermal dipoles or artificial recharge systems). Micro-organisms require both electron donors and electron acceptors for cellular growth, proliferation and maintenance of their metabolic functions. The mechanisms controlling these reactions derive from the interactions occurring at the micro-scale that depend on mineral compositions, the biota of subsurface environment, but also fluid mixing, which determines the local concentrations of nutriments, electron donors and electron acceptors. Hence, mixing zones between oxygen and nutriment rich shallow groundwater and mineralized deep groundwater are often considered as potential hotspots of microbial activity, although relatively few field data document flow distributions, transport properties, chemical gradients and micro-organisms distributions across these mixing interfaces. Here we investigate the origin of a localized biofilm development observed in the fractured granite aquifer at the Ploemeur observatory (H+ network hplus.ore.fr).This biofilm composed of ferro-oxidizing bacteria is

  3. PREFACE: 32nd UIT (Italian Union of Thermo-fluid-dynamics) Heat Transfer Conference

    NASA Astrophysics Data System (ADS)

    2014-11-01

    volume would like to sincerely thank the authors for presenting their works at the conference and in this special issue. Special thanks are also due to the Scientific Committee, to all the reviewers, and to all the authors for their accurate revision process of each paper for this special issue. Special thanks go to the Organizing Committee, chaired by Prof. Paolo Di Marco. Walter Grassi (Chairman of the Scientific Committee), Alessandro Franco, Nicola Forgione, Daniele Testi - Editors of the Special Issue

  4. PREFACE: 12th Conference on ''Theoretical Nuclear Physics in Italy''

    NASA Astrophysics Data System (ADS)

    Bombaci, I.; Covello, A.; Marcucci, L. E.; Rosati, S.

    2009-07-01

    These Proceedings contain the invited and contributed papers presented at the 12th Conference on Theoretical Nuclear Physics in Italy held in Cortona, Italy, from 8-10 October 2008. As usual, the meeting was held at il Palazzone, a 16th century castle owned by the Scuola Normale Superiore di Pisa. The aim of this biennal conference is to bring together Italian theorists working in various fields of Nuclear Physics to discuss their latest results and confront their points of view in a lively and informal way. This offers the opportunity to promote collaborations between different groups. There were about 50 participants at the conference, coming from 14 Italian Universities (Cagliari, Catania, Ferrara, Firenze, Genova, Lecce, Milano, Napoli, Padova, Pavia, Pisa, Roma, Trento, Trieste). The program of the conference, prepared by the Organizing Committee (Ignazio Bombaci, Aldo Covello, Laura Elisa Marcucci and Sergio Rosati) focused on six main topics: Few-Nucleon Systems, Nuclear Matter and Nuclear Dynamics, Nuclear Astrophysics, Structure of Hadrons and Hadronic Matter, Nuclear Structure, Nuclear Physics with Electroweak Probes. Winfried Leidemann, Maria Colonna, Marcello Lissia, Elena Santopinto, Silvia Lenzi and Omar Benhar took the burden of giving general talks on these topics and reviewing the research activities of the various Italian groups. In addition, 19 contributed papers were presented, most of them by young participants. In the last session of the Conference there were two invited talks related to experimental activities of great current interest. Gianfranco Prete from the Laboratori Nazionali di Legnaro spoke about the Italian radioactive ion beam facility SPES and the status of the European project EURISOL, while Nicola Colonna from the INFN, Bari, gave an overview of the perspectives of development of fourth-generation nuclear reactors. We would like to thank the authors of the general reports for their hard work in reviewing the main achievements in

  5. Crustal accretion at fast spreading ridges and implications for hydrothermal circulation

    NASA Astrophysics Data System (ADS)

    Theissen-Krah, S.; Rupke, L.; Hasenclever, J.

    2015-12-01

    Oceanic crust is continuously created at mid-ocean ridges, but the location of lower crust crystallization continues to be debated since the proposal of the gabbro glacier and many sills end-member models. Geophysical and geochemical studies find evidence for either of the models. The crust is cooled by a combination of heat diffusion and advection, and hydrothermal circulation is thought to play a key role in distinguishing between both models. We use our numerical model for joint modeling of crustal accretion and hydrothermal circulation1 to test different accretion and hydrothermal cooling scenarios. The results match the seismic and structural observations from the East Pacific Rise2 and the Oman Ophiolite3, with a shallow melt lens at the correct location overlaying a narrow volume of partially molten rocks. Our results show that no more than 25-50% of the lower crust crystallizes in situ and that deep circulation is likely to occur at fast and intermediate spreading ridges. The occurrence of deep hydrothermal cooling however does not rule out that a major portion of the lower crust is formed in the shallow melt lens; our simulations rather suggest that it is necessary independent of where in the lower crust crystallization takes place. 1 Theissen-Krah, S., Iyer, K., Rupke, L. H. & Morgan, J. P. Coupled mechanical and hydrothermal modeling of crustal accretion at intermediate to fast spreading ridges. Earth and Planetary Science Letters 311, 275-286, doi:10.1016/j.epsl.2011.09.018 (2011). 2 Dunn, R. A., Toomey, D. R. & Solomon, S. C. Three-dimensional seismic structure and physical properties of the crust and shallow mantle beneath the East Pacific Rise at 9 degrees 30'N. Journal of Geophysical Research-Solid Earth 105, 23537-23555 (2000). 3 Nicolas, A. & Boudier, F. Structural contribution from the Oman ophiolite to processes of crustal accretion at the East Pacific Rise. Terra Nova 27, 77-96, doi:10.1111/ter.12137 (2015).

  6. Ocean acidification and its impacts: an expert survey

    NASA Astrophysics Data System (ADS)

    Gattuso, J.; Mach, K.; Morgan, M. G.

    2011-12-01

    pertaining to policy and socio-economic impacts, for example on food security, were also relatively low. Thanks are due to the respondents: Andreas Andersson, James Barry, Jerry Blackford, Philip Boyd, Ken Caldeira, Long Cao, Sinead Collins, Sarah Cooley, Kim Currie, Allemand Denis, Brad deYoung, Andrew Dickson, Ken Drinkwater, Sam Dupont, Jonathan Erez, Richard Feely, Maoz Fine, Kunshan Gao, Marion Gehlen, Jason Hall-Spencer, Christoph Heinze, Ove Hoegh-Guldberg, Gretchen Hofmann, Roberto Iglesias-Prieto, Maria Debora Iglesias-Rodriguez, Akio Ishida, Masao Ishii, Atsushi Ishimatsu, Haruko Kurihara, Kitack Lee, Su Mei Liu, Salvador Lluch-Cota, Jeremy T. Mathis, Ben McNeil, Philip Munday, John Pandolfi, Gian-Kasper Plattner, Alexander Polonsky, Hans-Otto Pörtner, Ulf Riebesell, Rongshuo, Chris Sabine, Daniela Schmidt, Brad Seibel, Yoshihisa Shirayama, Atsushi Suzuki, Carol Turley, Nicola Wannicke, Poh Poh Wong, Michiyo Yamamoto-Kawai and Peter Zavialov.

  7. On the instrumental characterization of a 3-λ scanning lidar to monitor industrial flames and its application for retrieving optical and microphysical properties

    NASA Astrophysics Data System (ADS)

    Guerrero-Rascado, Juan Luis; da Costa, Renata; Esteban Bedoya, Andrés; Guardani, Roberto; Alados-Arboledas, Lucas; Efrain Bastidas, Álvaro; Landulfo, Eduardo

    2015-04-01

    . Alados-Arboledas, D. Nicolae, and M. Wiegner, "EARLINET: towards an advanced sustainable European aerosol lidar network," Atmos. Meas. Tech. 7(8), 2389-2409 (2014)

  8. [Diagnosis for the ecological conservation of Jatropha spp. (Euphorbiaceae) and their habitats in the Tehuacan-Cuicatlan Reserve, Mexico].

    PubMed

    2015-03-01

    Jatropha spp. is an important phytogenetic resource used as food, medicine, and biofuel. In this study, we verified the taxonomic identity of Jatropha species for The Biosphere Reserve Tehuacan-Cuicatlan, and the Ecological Land Units (ELU) occupied by them. We assessed the conservation status of their habitats, and the vulnerability of Jatopha spp. populations. A total of 15 sampling sites were selected in the Reserve. The taxonomic work was based on specimens, original descriptions and type material from herbaria and those available on-line. ELUs were classified using biophysical variables, and gvSIG software. Ecological attributes were determined using a quantitative analysis by the point-centered quarter method; disturbance was estimated through site indicators, and the conservation status of the Jatropha populations was assessed using the Method for Evaluation of the Risk of Extinction of Plants in Mexico (MER). Jatropha frequently dominated the physiognomy of plant communities. The current distribution of Jatropha species in the Reserve was mainly determined by elevation, temperature, and precipitation variables. The confirmed species were Jatropha ciliata Sessd ex Cerv., Jatropha neopauciflora Pax, Jatropha oaxacana J. Jiménez Ram. & R. Torres, Jatropha rufescens Brandegee, and Jatropha rzedowskii J. Jiménez Ram., which are distributed in four of the six defined ELU. J. neopauciflora and J. rzedowskii were the most widespread species; this last species concur in four, J. oaxacana in two, while J. rufescens and J. ciliata in one ELU, being the most restricted. The richness of the genera in the associated communities ranged from 16 to 42. The maximum and minimum Importance Value Indexes were observed.in San Nicolas Tepoxtitlan for J. neopauciflora (53.75%) and J. rzedowskii (1.50%). The disturbance index varied from 0.22 to 0.82, with an average of 0.51, where the livestock variable had a high contribution. Considering the risk categories of MER, we

  9. Adaptive Optics for Industry and Medicine

    NASA Astrophysics Data System (ADS)

    Dainty, Christopher

    2008-01-01

    pt. 1. Wavefront correctors and control. Liquid crystal lenses for correction of presbyopia (Invited Paper) / Guoqiang Li and Nasser Peyghambarian. Converging and diverging liquid crystal lenses (oral paper) / Andrew X. Kirby, Philip J. W. Hands, and Gordon D. Love. Liquid lens technology for miniature imaging systems: status of the technology, performance of existing products and future trends (invited paper) / Bruno Berge. Carbon fiber reinforced polymer deformable mirrors for high energy laser applications (oral paper) / S. R. Restaino ... [et al.]. Tiny multilayer deformable mirrors (oral paper) / Tatiana Cherezova ... [et al.]. Performance analysis of piezoelectric deformable mirrors (oral paper) / Oleg Soloviev, Mikhail Loktev and Gleb Vdovin. Deformable membrane mirror with high actuator density and distributed control (oral paper) / Roger Hamelinck ... [et al.]. Characterization and closed-loop demonstration of a novel electrostatic membrane mirror using COTS membranes (oral paper) / David Dayton ... [et al.]. Electrostatic micro-deformable mirror based on polymer materials (oral paper) / Frederic Zamkotsian ... [et al.]. Recent progress in CMOS integrated MEMS A0 mirror development (oral paper) / A. Gehner ... [et al.]. Compact large-stroke piston-tip-tilt actuator and mirror (oral paper) / W. Noell ... [et al.]. MEMS deformable mirrors for high performance AO applications (oral paper) / Paul Bierden, Thomas Bifano and Steven Cornelissen. A versatile interferometric test-rig for the investigation and evaluation of ophthalmic AO systems (poster paper) / Steve Gruppetta, Jiang Jian Zhong and Luis Diaz-Santana. Woofer-tweeter adaptive optics (poster paper) / Thomas Farrell and Chris Dainty. Deformable mirrors based on transversal piezoeffect (poster paper) / Gleb Vdovin, Mikhail Loktev and Oleg Soloviev. Low-cost spatial light modulators for ophthalmic applications (poster paper) / Vincente Durán ... [et al.]. Latest MEMS DM developments and the path ahead

  10. Domain walls riding the wave.

    SciTech Connect

    Karapetrov, G.; Novosad, V.; Materials Science Division

    2010-11-01

    Recent years have witnessed a rapid proliferation of electronic gadgets around the world. These devices are used for both communication and entertainment, and it is a fact that they account for a growing portion of household energy consumption and overall world consumption of electricity. Increasing the energy efficiency of these devices could have a far greater and immediate impact than a gradual switch to renewable energy sources. The advances in the area of spintronics are therefore very important, as gadgets are mostly comprised of memory and logic elements. Recent developments in controlled manipulation of magnetic domains in ferromagnet nanostructures have opened opportunities for novel device architectures. This new class of memories and logic gates could soon power millions of consumer electronic devices. The attractiveness of using domain-wall motion in electronics is due to its inherent reliability (no mechanical moving parts), scalability (3D scalable architectures such as in racetrack memory), and nonvolatility (retains information in the absence of power). The remaining obstacles in widespread use of 'racetrack-type' elements are the speed and the energy dissipation during the manipulation of domain walls. In their recent contribution to Physical Review Letters, Oleg Tretiakov, Yang Liu, and Artem Abanov from Texas A&M University in College Station, provide a theoretical description of domain-wall motion in nanoscale ferromagnets due to the spin-polarized currents. They find exact conditions for time-dependent resonant domain-wall movement, which could speed up the motion of domain walls while minimizing Ohmic losses. Movement of domain walls in ferromagnetic nanowires can be achieved by application of external magnetic fields or by passing a spin-polarized current through the nanowire itself. On the other hand, the readout of the domain state is done by measuring the resistance of the wire. Therefore, passing current through the ferromagnetic wire is

  11. Condensed matter analogues of cosmology

    NASA Astrophysics Data System (ADS)

    Kibble, Tom; Srivastava, Ajit

    2013-10-01

    Ranjkesh, V Simonka, M Ambrozic, Z Bradac and S Kralj Morphogenesis of defects and tactoids during isotropic-nematic phase transition in self-assembled lyotropic chromonic liquid crystalsYoung-Ki Kim, Sergij V Shiyanovskii and Oleg D Lavrentovich Annihilation dynamics of stringlike topological defects in a nematic lyotropic liquid crystalR R Guimarães, R S Mendes, P R G Fernandes and H Mukai Duality between the dynamics of line-like brushes of point defects in 2D and strings in 3D in liquid crystalsSanatan Digal, Rajarshi Ray, P S Saumia and Ajit M Srivastava The multiuniverse transition in superfluid 3HeYury Bunkov Coherent topological defect dynamics and collective modes in superconductors and electronic crystalsD Mihailovic, T Mertelj, V V Kabanov and S Brazovskii Gaussianity revisited: exploring the Kibble-Zurek mechanism with superconducting ringsD J Weir, R Monaco, V P Koshelets, J Mygind and R J Rivers The Kibble-Zurek mechanism in a subcritical bifurcationM A Miranda, D Laroze and W González-Viñas Topological relics of symmetry breaking: winding numbers and scaling tilts from random vortex-antivortex pairsW H Zurek Causality and non-equilibrium second-order phase transitions in inhomogeneous systemsA del Campo, T W B Kibble and W H Zurek The role of causality in tunable Fermi gas condensatesJen-Tsung Hsiang, Chi-Yong Lin, Da-Shin Lee and Ray J Rivers Kibble-Zurek mechanism in a trapped ferromagnetic Bose-Einstein condensateHiroki Saito, Yuki Kawaguchi and Masahito Ueda D-brane solitons and boojums in field theory and Bose-Einstein condensatesKenichi Kasamatsu, Hiromitsu Takeuchi and Muneto Nitta Kibble-Zurek scaling and string-net coarsening in topologically ordered systemsAnushya Chandran, F J Burnell, Vedika Khemani and S L Sondhi Universal frozen spectra after time-dependent symmetry restoring phase transitionsFriedemann Queisser, Patrick Navez and Ralf Schützhold Microscopic theory of non-adiabatic response in real and imaginary timeC De Grandi, A

  12. Firehose-Like Jet Discovered in Action

    NASA Astrophysics Data System (ADS)

    2003-06-01

    change rapidly due to an effect called the "firehose instability." "Imagine a firehose lying on the ground," said Marcus Teter, also of Penn State and co-author on the paper. "After you turn on the water, you will see different parts of the hose kinking up, and moving rapidly in different directions, pushed by the increased pressure at the bends in the hose. The Vela jet resembles a hose made of magnetic fields, which confines the electrically charged particles." The instability could be triggered by the strong head-wind created as the pulsar moves through the surrounding gas at a speed of 300,000 kilometer per hour (about 200,000 miles per hour). The bright blobs in the jet are thought to be a manifestation of the increased magnetic field and particle pressure at the kinks in the jet. The observed brightness of the outer jet and the rapid motions of the jet and blobs in it indicate that the bright arcs around the pulsar may not be rings circling its equator, as previously thought. Instead, they may represent shock waves caused by the motion of the inner jet through the cloud of particles around the pulsar. "The study of pulsar jets is important not only in itself," said Oleg Kargaltsev, a Penn State graduate student and co-investigator, "but it could also help to understand the nature of the enormous jets coming from supermassive black holes. Those jets may also vary, but on time scales of millions of years, instead of weeks as in the Vela pulsar jet." NASA's Marshall Space Flight Center, Huntsville, Ala., manages the Chandra program for the Office of Space Science, NASA Headquarters, Washington. Northrop Grumman of Redondo Beach, Calif., formerly TRW, Inc., was the prime development contractor for the observatory. The Smithsonian Astrophysical Observatory controls science and flight operations from the Chandra X-ray Center in Cambridge, Mass. The image and additional information are available at: http://chandra.harvard.edu and http://chandra.nasa.gov

  13. List of Participants

    NASA Astrophysics Data System (ADS)

    2011-08-01

    GonzalezBUAP, FCFM Lorenzo Díaz CruzBUAP Facultad de Ciencias Físico Matemáticas Luis Rey Díaz BarrónDivisión de Ciencias e Ingenierías Luis UrenaUniversidad de Guanajuato Magda LolaDept. of Physics, University of Patras, Greece Mahmoud WahbaEgyptian Center for Theoretical Physics, MTI Marcus S CohenNew Mexico State University Mario A Acero OrtegaICN - UNAM Mario E GomezUniversidad de Huelva Mark PipeUniversity of Sheffield Mauro NapsucialeDCI-UG Mirco CannoniUniversidad de Huelva Mónica Felipa Ramírez PalaciosUniversidad de Guadalajara Murli Manohar VermaLucknow university, India Nassim BozorgniaUCLA Octavio Obregón Octavio ValenzuelaIA-UNAM Oleg KamaevUniversity of Minnesota Osamu SetoHokkai-Gakuen University Pedro F González DíazIFF, CSIC, Serrano 121, 28006 Madrid, Spain Qaisar ShafiBartol Research Inst. and Delaware U. Raul Hennings-YeomansLos Alamos National Laboratory René Ángeles MartínezDepartamento de Fisica, del DCI de la Universidad de Guanajuato Reyna XoxocotziBUAP, FCFM Rishi Kumar TiwariGovt. Model Science College, Rewa (MP) INDIA Roberto A SussmanICN-UNAM Selim Gómez ÁvilaDCI-UG Sugai KenichiSaitama University Susana Valdez AlvaradoDCI-UG TVladimir - 2K CollaborationColorado State University Tonatiuh MatosCINVESTAV Valeriy DvoeglazovUniversidad de Zacatecas Vannia Gonzalez MaciasDCI-UG Vladimir Avila-ReeseInstituto de Astronomia, UNAM Wolfgang BietenholzINC, UNAM (Mexico) Yamanaka MasatoKyoto Sangyo University Yann MambriniLPT Orsay Yu-Feng ZhouInstitute of Theotretical Physics, Chinese Academy of Sciences, PR China Aaron HigueraDCI-UG Azarael Yebra PérezDCI-UG César Hernández AguayoDCI-UG Jaime Chagoya AlvarezDCI-UG Jonathan Rashid Rosique CampuzanoDCI-UG José Alfredo Soto ÁlvarezDCI-UG Juan Carlos De Haro SantosDCI-UG Luis Eduardo Medina MedranoDCI-UG Maria Fatima Rubio EspinozaDCI-UG Paulo Alberto Rodriguez HerreraDCI-UG Roberto Oziel Gutierrez CotaDCI-UG Rocha Moran Maria PaulinaDCI-UG Xareni Sanchez MonroyDCI-UG

  14. Geriatric Pulsar Still Kicking

    NASA Astrophysics Data System (ADS)

    2009-02-01

    's clearly fading as it ages, it is still more than holding its own with the younger generations." It's likely that two forms of X-ray emission are produced in J0108: emission from particles spiraling around magnetic fields, and emission from heated areas around the neutron star's magnetic poles. Measuring the temperature and size of these heated regions can provide valuable insight into the extraordinary properties of the neutron star surface and the process by which charged particles are accelerated by the pulsar. The younger, bright pulsars commonly detected by radio and X-ray telescopes are not representative of the full population of objects, so observing objects like J0108 helps astronomers see a more complete range of behavior. At its advanced age, J0108 is close to the so-called "pulsar death line," where its pulsed radiation is expected to switch off and it will become much harder, if not impossible, to observe. "We can now explore the properties of this pulsar in a regime where no other pulsar has been detected outside the radio range," said co-author Oleg Kargaltsev of the University of Florida. "To understand the properties of 'dying pulsars,' it is important to study their radiation in X-rays. Our finding that a very old pulsar can be such an efficient X-ray emitter gives us hope to discover new nearby pulsars of this class via their X-ray emission." The Chandra observations were reported by Pavlov and colleagues in the January 20, 2009, issue of The Astrophysical Journal. However, the extreme nature of J0108 was not fully apparent until a new distance to it was reported on February 6 in the PhD thesis of Adam Deller from Swinburne University in Australia. The new distance is both larger and more accurate than the distance used in the Chandra paper, showing that J0108 was brighter in X-rays than previously thought. "Suddenly this pulsar became the record holder for its ability to make X-rays," said Pavlov, "and our result became even more interesting without us

  15. Radon emanation during compression, fracturing and heating of granites

    NASA Astrophysics Data System (ADS)

    Pili, E.; Nicolas, A.; Girault, F.; Schubnel, A.; Fortin, J.; Passelègue, F. X.; Richon, P.

    2013-12-01

    Radon emanation during compression, fracturing and heating of granites É. Pili1,2, A. Nicolas3, F. Girault3, A. Schubnel3, J. Fortin3, F. Passelègue3, P. Richon1 1CEA, DAM, DIF, F-91297 Arpajon, France 2Institut de Physique du Globe, Sorbonne Paris Cité, 1 rue Jussieu, F-75005 Paris, France 3Ecole Normale Supérieure, 24 rue Lhomond, F-75005 Paris, France Precursory radon emissions have been reported previously in various seismically active areas. Nevertheless such observations, only partially understood, are the subject of much skepticism. Radon-222 is a radioactive gas, daughter of radium-226 from alpha-decay in the uranium-238 decay chain that is naturally present in rocks and soils. Its escape is facilitated by preferential pathways such as fractures. Its half-life is 3.8 days only. As a consequence, radon may accumulate during short period only, and is thought to be released prior, during and after earthquakes as stress is discharged and new fluid pathways are made available. However, the physical processes involved in radon emanation during stress variations remain mostly unknown in the field and poorly studied in the laboratory. Here, we investigate radon emanation from various granite samples: Isla Craig, Westerly, La Peyratte and various leucogranites. Radon emanation and diffusion length, measured first on intact samples, are compared with measurements performed after heating at 850°C. Despite extensive thermal fracturing, radon emanation decreases irreversibly after heating compared to intact sample, and the higher the heating temperature the smaller the radon emanation. This is explained by the disappearance of water-film at grain boundaries, which plays an important role in radon percolation through the porous space, and then, at higher temperatures, by dehydration and melting of biotites where radium is concentrated. The recoil range of radon is likely shorter in melted biotites than in intact ones. The effect of mechanical fracturing on radon

  16. PREFACE: 10th Summer School on Theoretical Physics 'Symmetry and Structural Properties of Condensed Matter'

    NASA Astrophysics Data System (ADS)

    Lulek, Tadeusz; Wal, Andrzej; Lulek, Barbara

    2010-03-01

    also for several valuable discussion. We would like to express our thanks to all those who prepared manuscripts, to all referees who spent their time to significantly improve our elaborations, and thus the quality of this volume, to all members of our International Advisory Committee and to chairmen for their polite and efficient leading of sessions. It is our pleasure to express special gratitude to The Nicolas C Metropolis Mathematics Foundation (Los Alamos, USA) for substantial financial support of our three last SSPCM schools. Indeed, it provided an essential basis for performing these meetings. We direct this gratitude to Professor James D Louck, the President of this Foundation. Also, we were happy to hear from Professor Louck that this series of schools has had an important influence on his activities on application of unitary groups in physics. It has resulted in a new monograph: James D Louck, 'Unitary Symmetry and Combinatorics', World Scientific, New Jersey 2008, which was presented at our jubilee meeting. Tadeusz Lulek, Andrzej Wal and Barbara Lulek

  17. MoMar-Demo at Lucky Strike. A near-real time multidisciplinary observatory of hydrothermal processes and ecosystems at the Mid-Atlantic Ridge

    NASA Astrophysics Data System (ADS)

    Cannat, M.; Sarradin, P.; Blandin, J.; Escartin, J.; Colaco, A.; MoMAR-Demo Scientific Party : Aron Michael, Aumont Virginie, Baillard Christian, Ballu Valérie, Barreyre Thibaut, Blandin Jérôme, Blin Alexandre, Boulart Cédric, Cannat Mathilde, Carval Thierry, Castillo Alain, Chavagnac Valérie, Coail Jean Yves, Colaço Ana, Corela Carlos, Courrier Christophe, Crawford Wayne, Cuvelier Daphné, Daniel Romuald, Dausse Denis, Escartin Javier, Fabrice Fontaine, Gabsi Taoufik, Gayet Nicolas, Guyader Gérard, Lallier François, Lecomte Benoit, Legrand Julien, Lino Silva, Miranda Miguel, Mitard Emmelyne, Pichavant Pascal, Pot Olivier, Reverdin Gilles, Rommevaux Céline, Sarradin Pierre Marie, Sarrazin Jozée, Tanguy Virginie, Villinger Heinrich, Zbinden Magali

    2011-12-01

    , pressure probes, tiltmeter, temperature probes in selected smokers, currentmeters and temperature probes in the water column), and colonization devices for time-integrated faunal studies. In this presentation we will outline the latest results of this prototype sub-sea multidisciplinary observatory system. The MoMAR-Demo Scientific Party : Aron Michael, Aumont Virginie, Baillard Christian, Ballu Valérie, Barreyre Thibaut, Blandin Jérôme, Blin Alexandre, Boulart Cédric, Cannat Mathilde, Carval Thierry, Castillo Alain, Chavagnac Valérie, Coail Jean Yves, Colaço Ana, Corela Carlos, Courrier Christophe, Crawford Wayne, Cuvelier Daphné, Daniel Romuald, Dausse Denis, Escartin Javier, Fabrice Fontaine, Gabsi Taoufik, Gayet Nicolas, Guyader Gérard, Lallier François, Lecomte Benoit, Legrand Julien, Lino Silva, Miranda Miguel, Mitard Emmelyne, Pichavant Pascal, Pot Olivier, Reverdin Gilles, Rommevaux Céline, Sarradin Pierre Marie, Sarrazin Jozée, Tanguy Virginie, Villinger Heinrich, Zbinden Magali

  18. Textural and petrological characteristics of ultrahigh-pressure chromitites, indicating a mantle recycling origin?

    NASA Astrophysics Data System (ADS)

    Arai, Shoji; Miura, Makoto; Yamamoto, Shinji; Shmelev, Vladimir

    2013-04-01

    Podiform chromitites, which occur as irregular to lens-like chromite-rich bodies within mantle peridotite in ophiolites, show various petrological characteristics, suggesting various origins. Some of them contain ultrahigh-pressure (UHP) minerals such as diamond, moissanite and Fe silicides (= UHP chromitites) (e.g., Robinson et al., 2004; Yang et al., 2007). Their origin is highly enigmatic, because the podiform chromitites have been widely understood as low-P (uppermost mantle level) products (e.g., Arai and Yurimoto, 1994; Zhou et al., 1994). Ordinary podiform chromitites show various lines of evidence for low-P genesis. Chromian spinel (or chromite) frequently contains solid mineral inclusions, and one of their main phases is pargasite, which is stable up to 3 GPa (e.g., Niida and Green, 1999), one of typical low-P minerals. The melt-harzburgite intereaction is a fundamental process in podiform chromitite genesis (e.g., Arai and Yurimoto, 1994), and associated with incongruent melting of orthopyroxene in harzburgite to form dunite and relatively Si-rich melt, which is operative at low-P conditions (e.g., Kushiro, 1969). We are strongly required to incorporate the genesis UHP chromitite into the framework of podiform chromitite genesis. Arai (2010) proposed a hypothesis of deep mantle recycling of ordinary low-P chromitite for the genesis of UHP chromitite. We try to examine petrographical and petrological characteristics of UHP chromitites to check the hypothesis of Arai (2010). Some peculiar textures of podiform chromities, such as orbicular, nodular and anti-nodular textures, are interpreted to be primary igneous and particular to ordinary low-P igneous chromitites (cf. Nicolas, 1989). To be interesting, the nodular texture, characterized by oval aggregates of chromian spinel (= chromite nodules; ~1 cm across) set in olivine-rich matrix, is also observed in some of UHP chromitites from the Luobusa ophiolite, Tibet (e.g., Yamamoto et al., 2009). We carefully

  19. Uniformly Asymptotic Frequency Domain Green's Functions for the Acoustic Equation - Theory and Applications in Two and Three Dimensions

    NASA Astrophysics Data System (ADS)

    Yedlin, Matthew; Virieux, Jean

    2010-05-01

    model. Geophysics 64(3), pp. 888-901. [2] J. R. Ernst, A. G. Green, H. Maurer and K. Holliger. 2007, Application of a new 2D time-domain full-waveform inversion scheme to crosshole radar data. Geophysics 72, pp. J53. [3] H. Marquering, F. Dahlen and G. Nolet. 1999, Three-dimensional sensitivity kernels for finite-frequency traveltimes: The banana-doughnut paradox. Geophysical Journal International 137(3), pp. 805-815. [4] J. Tromp, C. Tape and Q. Liu. 2005, Seismic tomography, adjoint methods, time reversal and banana-doughnut kernels. Geophysical Journal International 160(1), pp. 195-216. [5] M. L. Buursink, T. C. Johnson, P. S. Routh and M. D. Knoll. 2008, Crosshole radar velocity tomography with finite-frequency fresnel volume sensitivities. Geophysical Journal International 172(1), pp. 1-17. [6] I. Iturbe, P. Roux, J. Virieux and B. Nicolas. 2009, Travel-time sensitivity kernels versus diffraction patterns obtained through double beam-forming in shallow water. J. Acoust. Soc. Am. 126(2), pp. 713-720. [7] E. Zauderer. 1971, Uniform asymptotic solutios of the reduced wave equation. Journal of Mathematical Analysis and Application 30, pp. 157-171. [8] M. J. Yedlin. 1987, Uniform asymptotic solution for the Green's function for the two-dimensional acoustic equation. J. Acoust. Soc. Am. 81(2) pp. 238-243.

  20. Candoglia Marble and the "Veneranda Fabbrica del Duomo di Milano": a resource for Global Heritage Stone Designation in the Italian Alps

    NASA Astrophysics Data System (ADS)

    Borghi, Alessandro; Castelli, Daniele; Corbetta, Elio; Antonella Dino, Giovanna

    2015-04-01

    Alpine marbles have been widely used in the past for celebrated, both indoor and outdoor, applications. Among them, the Candoglia Marble, a worldwide known and appreciated georesource, and its "bastard brother" from the nearby Ornavasso area were and are exploited in the Verbano-Cusio-Ossola quarry basin of Northwestern Italian Alps. They crop out as lenses (up to 30 m in thickness) interlayered within high-grade paragneisses of the Ivrea Zone, a section of deep continental crust that experienced amphibolite- to granulite-facies metamorphism of Palaeozoic age. The Candoglia and Ornavasso Marbles are pinkish to greyish, coarse-grained (> 3 mm), calcitic marbles with frequent, cm-thick, dark-greenish silicate layers containing diopside and tremolite; minor minerals include quartz, epidote, sulphides, Ba-feldspar, barite and, occasionally, phlogopite. First record of quarrying activities in the area arises to the Roman age (Ornavasso quarrying area). Both the Ornavasso and Candoglia Marbles were widely employed in local construction (San Nicola Church and Torre della Guardia at Ornavasso, Madonna di Campagna Church at Verbania, San Giovanni in Montorfano Church), but they became famous thanks to their application for the "Duomo di Milano" since the fourteenth century. At the beginning, the building stones employed for the construction of the Gothic style, Duomo di Milano were quarried in the Ornavasso area, but in a short time, the Candoglia quarry (property of the so-called "Veneranda Fabbrica del Duomo" that incessantly takes care of the Cathedral Church from 1387 A.D.) became the main quarry for the construction and maintenance of the Cathedral. The Candoglia quarry developed during the centuries, from open pit small quarries to a unique underground quarry, characterised by a very peculiar quarrying activities (subvertical bench characterized by strong lateral forces, which have to be contrasted and monitored). The Candoglia Marble was preferred to Carrara marbles

  1. Change in the structure of Escherichia coli population related to the settling velocities in karst aquifer

    NASA Astrophysics Data System (ADS)

    Petit, F.; Massei, N.; Berthe, T.; Deloffre, J.; Fournier, M.; Bertel, F.; jolivet, F.; lallemand, H.; Niepceron, F.; Sellier, C.; Benjamin, S.

    2012-04-01

    Change in the structure of Escherichia coli population related to the settling velocities in karst aquifer. Fabienne Petit1, Fanny Bertel2, Florence Jolivet2, Hélène Lallemand2, Fanny Niepceron2, Clémentine Sellier2, Benjamin Smith2, Thierry Berthe, Julien Deloffre1, Matthieu Fournier1,Nicolas Massei 1. 1- Université de Rouen, UMR 6143 M2C, 76821 Mont-Saint-Aignan, France 1- CNRS, UMR 6143 M2C, 76821 Mont-Saint-Aignan, France 1- SFR SCALE, 76821 Mont-Saint-Aignan, France 2 Research project of students from MasterEnvironment ( ESEB University of Rouen) According to the farming or human use of their watershed, the karst aquifers were particularly vulnerable to contamination by fecal bacteria mainly Escherichia coli (E. coli). To date, if E. coli is a commensal bacteria originated from intestinal tracts of humans and vertebrate animals, the water and sediment are also considered as a putative second habitat where some strains could be naturalized. Among the phenotypic characteristics of E.coli, association with particles not only could enhance the survival of some strains but also greatly influenced the particles dynamics. The great genetic diversity of E. coli may explain this variety of lifestyles of this bacteria species. Indeed we have previously shown that in river, the structure of the population of E. coli was not stable, but depended on hydrological conditions (Ratajczak, 2010). In this work we go further into the understanding of the behaviour of E. coli population in karstic hydrosystem by investigating (i) the structure of E. coli population based on the distribution in four main phylo-groups (A, B1, B2, D) according their settling velocities from surface water to groundwater. For this purpose we combined microbiology , microscopy (SEM) and hydrology approaches. During their transfer along the karst hydrosystem, both modalities of the association of E. coli to the particles and, the structure of E. coli population were modified. Settling experiment led

  2. Preface: Emag 2007

    NASA Astrophysics Data System (ADS)

    McComb, David; Brown, Paul D.

    2008-02-01

    the keynote scientific issues and to provide a background to the detailed conference themes. Our thanks to Maureen Makenzie and Pete Nellist for their sterling work running this event. In addition, a Trade Exhibition was fully integrated into the conference site in the Glasgow Caledonian University Sports Hall, within close walking distance of the lecture theatres, giving delegates the opportunity to discuss recent developments in analytical instrumentation. In keeping with the previous EMAG-NANO 2005 conference at Leeds University, provision was made for commercial workshops for the promotion of products by the manufacturers and 'question and answer' sessions. The companies on show spanned the range of mainstream electron and scanning probe instrument makers, combined with a broad spectrum of smaller companies providing ancillary equipment, from services for sample preparation to vacuum system support. As ever, we are grateful to the exhibitors and sponsors for their valued contribution to this conference series. Finally, we are extremely grateful for the many people who helped with the running of this conference. On behalf of the EMAG group we'd like to take the opportunity to thank the local organising committee of Ian MacLaren and Maureen Mackenzie. Our thanks also to Stephen Donnelly and Richard Baker for collating the scientific programme, to Stephen Donnelly for co-ordinating the award of student bursaries, and to Richard Baker and Guenter Moebus for their patient work guiding the editing of the proceedings. We'd also like to acknowledge the exceptional contribution of Jill Cowlard and Nicola Deedman of the CEM Group for co-ordinating the Trade Exhibition, and Claire Pantlin and her team at the Institute of Physics for their help keeping show on the road! David McComb Imperial College London (EMAG Chair) Paul D Brown University of Nottingham (EMAG Proceedings Editor)

  3. Emergent nanoscale fluctuations in high rock-salt PbTe

    NASA Astrophysics Data System (ADS)

    Billinge, Simon

    2013-03-01

    describe the results of these experiments. This work gives key insights into PbTe, the possible origin of its anomalous electronic structure properties, and why it is such an attractive parent compound for nanostructured high performance thermoelectric materials. I would like to acknowledge the excellent collaborations that occurred during this work, including Emil Bozin at Brookhaven National Laboratory, Mercouri Kanatzidis and Christos Malliakas at Northwestern University and Argonne National Laboratory, Kirsten Jensen from U. Aarhus, Steve Shapiro at Brookhaven National Laboratory, Matt Stone and Mark Lumsden at Oak Ridge National Laboratory, Nicola Spalding at ETH Zurich and Petros Souvatzis at Los Alamos National Laboratory. I would also like to acknowledge the support of the national user facilities and their staff where the work was done. Financial support for this work was from DOE office of Basic Energy Sciences through award DE-AC02-98CH10886.

  4. VizieR Online Data Catalog: New standards in 18th century astrometry (Lequeux, 2014)

    NASA Astrophysics Data System (ADS)

    Lequeux, J.

    2014-05-01

    Catalogue of Flamsteed (flamstee.dat): John Flamsteed (1646-1719) was the first astronomer in charge of Greenwich Observatory. His stellar catalogue (Flamsteed 1725) was built on observations from 1675 to 1683 with a 6-feet radius sextant mounted on an axis parallel to the polar axis of the Earth, then from 1683 to 1719 with a mural circle with a radius of 79.5 inches (2m). 220 stars over 3925. Catalogue of Romer (romer.dat): Ole (or Olaus) Romer (1644-1710) is principally known for his 1676 discovery of the finite velocity of light, a discovery that he shared with Jean-Dominique Cassini. After a long stay in Paris, he returned to Copenhagen in 1681 and was appointed professor of astronomy at the University. The observatory and all the observations were destroyed in the great Copenhagen fire of 1728, with the exception of observations of 88 stars obtained during three observing nights, from 20 to 23 October 1706. La Caille's catalogue of fundamental stars (lacaifun.dat): Nicolas-Louis La Caille (or Lacaille, or de la Caille, 1713-1762) was a French astronomer who is remembered principally for his survey of the southern sky, where he introduced 14 new constellations that are still in use today. Before leaving for the Cape of Good Hope in 1750, he started a catalogue of the 400 brightest stars of both hemispheres, which he completed during his stays in Cape Town and in the Mauritius island, then after his return to Paris in 1754. He reduced the observations himself, including for the first time corrections for aberration and nutation, and published them with details of the observations and reductions (La Caille 1757). Bailly's adaptation of La Caille's catalogue of fundamental stars (bailly.dat): After the death of La Caille, Jean-Sylvain Bailly published a catalogue of the brighest stars of both hemispheres for the equinox B1750.0 in Ephemerides for 10 year from 1765 to 1775 (Anonymous (Bailly) 1763, p. lvii-lxiv). This catalogue obviously derives from the catalogue

  5. EDITORIAL: Greetings from the new Editor-in-Chief

    NASA Astrophysics Data System (ADS)

    Bhattacharya, P.

    2004-04-01

    On 1 January, 2004, I assumed the position of Editor-in-Chief of Journal of Physics D: Applied Physics. I will start by saying that I will do my best to justify the confidence of the journal management and publishing staff in my abilities. I was fortunate to have been able to work, as an Editorial Board member, with my predecessor, the previous Editor-in-Chief, Professor Allister Ferguson. Allister has provided a high degree of intellectual stewardship for the journal in the last five years. He has made the job appear a worthy challenge for me. I therefore take this opportunity to thank Allister on behalf of the Editorial Board and publishing staff of the journal. Several other factors contributed to my decision to accept this position. The first is the group of people who actually go about the business of publishing. The Senior Publisher, Nicola Gulley (and her predecessor Sophy Le Masurier); the Managing Editor, Jill Membrey; the Publishing Administrators, Nina Blakesley and Sarah Towell; the Production Editor, Katie Gerrard and their office staff form an amazing group and have managed to make the operation of the journal incredibly efficient. An index of this is the speed with which incoming manuscripts are processed. The average time between the receipt of a manuscript and its web publication, if accepted, is 130 days. This is three to five times shorter than for most other journals. A factor that contributes to this success is a responsive pool of referees that the publishing staff have as a valuable resource. Ultimately, the standard bearers of any journal are the referees. Therefore, a grateful `thank you' is due from all of us at J. Phys. D to all our referees, who diligently perform this honourable task. The Associate Editors of the journal, Professors Lawler, Margaritondo and O'Grady, also provide immense scientific leadership. They help in defining new directions for the journal and in the publishing process. Last, but not least, a remarkable asset of

  6. A Geochemical Comparison of the Northern Peninsular Ranges Batholith in Southern California and the Coastal Batholith in Southern Peru

    NASA Astrophysics Data System (ADS)

    Clausen, B. L.; Martínez Ardila, A. M.; Morton, D. M.

    2010-12-01

    , tonalite, monzonite, and granodiorite. In addition, samples were taken from the adjacent Precambrian basement and Paleozoic San Nicolas batholith in order to estimate the local geochemistry for continental crust contamination and to compare with published crustal averages. For this part of the Coastal Batholith, gabbroic plutons that formed during extension have little contamination from continental crust; the time-separated super-units form distinct assemblages; some of the super-units went through several differentiation cycles; parts of the Linga super-unit have low Sri ratios below 0.704; and magma mixing played an important role. The Coastal Batholith of western Peru (similar to the eastern PRB) has an intermediate calc-alkaline composition, in comparison to batholiths in Chile (similar to the western PRB) that are more calcic and those in eastern Peru (similar to the Sierra Nevadas) that are more alkaline.

  7. PREFACE: 27th Summer School and International Symposium on the Physics of Ionized Gases (SPIG 2014)

    NASA Astrophysics Data System (ADS)

    Marić, Dragana; Milosavljević, Aleksandar R.; Mijatović, Zoran

    2014-12-01

    This volume of Journal of Physics: Conference Series contains a selection of papers presented at the 27th Summer School and International Symposium on the Physics of Ionized Gases - SPIG 2014, as General Invited Lectures, Topical Invited Lectures, Progress Reports and associated Workshop Lectures. The conference was held in Belgrade, Serbia, from 26-29 August 2014 at the Serbian Academy of Sciences and Arts. It was organized by the Institute of Physics Belgrade, University of Belgrade and Serbian Academy of Sciences and Arts, under the auspices of the Ministry of Education, Science and Technological Development, Republic of Serbia. A rare virtue of a SPIG conference is that it covers a wide range of topics, bringing together leading scientists worldwide to present and discuss state-of-the art research and the most recent applications, thus stimulating a modern approach of interdisciplinary science. The Invited lectures and Contributed papers are related to the following research fields: 1. Atomic Collision Processes (Electron and Photon Interactions with Atomic Particles, Heavy Particle Collisions, Swarms and Transport Phenomena) 2. Particle and Laser Beam Interactions with Solids (Atomic Collisions in Solids, Sputtering and Deposition, Laser and Plasma Interaction with Surfaces) 3. Low Temperature Plasmas (Plasma Spectroscopy and other Diagnostic Methods, Gas Discharges, Plasma Applications and Devices) 4. General Plasmas (Fusion Plasmas, Astrophysical Plasmas and Collective Phenomena) Additionally, the 27th SPIG encompassed three workshops that are closely related to the scope of the conference: • The Workshop on Dissociative Electron Attachment (DEA) - Chaired by Prof. Nigel J Mason, OBE, The Open University, United Kingdom • The Workshop on X-ray Interaction with Biomolecules in Gas Phase (XiBiGP), Chaired by Dr. Christophe Nicolas, Synchrotron SOLEIL, France • The 3rd International Workshop on Non-Equilibrium Processes (NonEqProc) - Chaired by Prof

  8. [Lecturers in chemistry at the Medical Faculty of the University of Nagyszombat].

    PubMed

    Szabadváry, F; Vámos, E

    1994-01-01

    After a short introduction on the development of the medieval universities at Pécs, Obuda, and Pozsony, and mentioning those who lectured in medicine in Hungary, the authors emphasise that modern chemistry was born during the 16th and 17th century. They stress the role of Paracelsus who invented iatro-chemistry, and that the first independent chairs, were founded in Germany in the beginning of 17th century at Altdorf, Marburg, Jéna, but were followed suit by Paris, when the Jardin des Plantes were erected. The first chemical textbook, the Cours de Chimie (Paris 1665), was also the work of a Frenchman, namely Nicolas Lémery (1645-1715). From the 18th century chemistry was also included in the curriculum of medical education in Hungary. Among the chairs of the newly founded medical faculty at Nagyszombat we find the chemical-botanical department in 1769. Its first professor was an Austrian physician Jakab Winterl (1773-1809), who had been a head physician at Selmecbánya, in Northern Hungary. Owing to a rash and premature publication Winterl's international reputation was unfortunately undermined in the last century by a leading German science historian, Hermann Kopp. The authors stress, however, that Winterl indeed played an important role in organizing the chemical department, and purchasing all the necessary equipment needed for up to date researches and analyses. And above all, in his Prolusiones ad chemiam saeculi decimi noni, he foresaw many forthcoming paths and discoveries of 19th century chemistry. After Winterl's retirement the department was divided into two parts. Pál Kitaibel (1757-1817) led the botanica department and János schuster (1777-1838) the other one for chemistry. Kitaibel made a name for himself by depicting Hungarian flora, but he also made discoveries in chemistry. He discovered chlore lime, before Tennant in 1795, a material which might have been used for whitening textiles. Schuster, on the other hand, introduced a system of Hungarian

  9. Geomorphic response to an extreme flood in two mountain rivers (northeastern Sardinia, Italy): the role of geomorphic and hydraulic controlling factors

    NASA Astrophysics Data System (ADS)

    Righini, Margherita; Surian, Nicola; Wohl, Ellen; Amponsah, William; Marchi, Lorenzo; Borga, Marco

    2016-04-01

    Geomorphic response to an extreme flood in two mountain rivers (northeastern Sardinia, Italy): the role of geomorphic and hydraulic controlling factors Margherita Righini (1), Nicola Surian (1), Ellen Wohl (2), William Amponsah (3, 4), Lorenzo Marchi (3), Marco Borga (4) (1) Department of Geosciences, University of Padova, Italy, (2) Department of Geosciences, Colorado State University, Fort Collins, Colorado, USA, (3) CNR IRPI, Padova, Italy, (4) Department of Land, Environment, Agriculture and Forestry, University of Padova, Italy. The investigation of geomorphic effectiveness of extreme floods is crucial to improve tools for assessing channel dynamics and our capability of forecasting geomorphological hazard. This work deals with geomorphic response of two mountain rivers in the Posada catchment (northeastern Sardinia, Italy), considering a range of morphological (i.e., lateral channel confinement, channel gradient, channel sinuosity, sediment sources, and vegetation) and hydraulic variables (i.e., cross-sectional stream power, unit stream power, flow duration and total energy expenditure) as possible controlling factors. On November 18th 2013, northeastern Sardinia was affected by an extreme meteorological event with hourly rainfall intensities up to 100 mm/h and a peak in rain accumulation up to 450 mm in 24 hours, with 18 casualties and damages to infrastructure and buildings. In the Posada and Mannu di Bitti Rivers, the geomorphic response (i.e., bank erosion, channel aggradation and incision, vegetation and wood dynamics, hillslope failure) was analyzed at different spatial scales. The observed dominant geomorphic change was channel widening. Therefore, channel width changes have been analyzed in detail by remote sensing and GIS tools integrated by field surveys. The study focuses on reaches (i.e., 22.5 km in the Posada River, upstream of Maccheronis dam; 18.2 km in the Mannu di Bitti River) affected by evident and significant geomorphic responses in terms

  10. Uniform Asymptotic Expansion for the Helmholtz Green's Function-- Application to Inversion Preprocessing

    NASA Astrophysics Data System (ADS)

    Yedlin, M. J.; Virieux, J.; van Vorst, D. G.

    2010-12-01

    obtained by using the new uniform asymptotic expansion ansatz, which supplants the usual homogeneous transfer function employed. Examples will be presented for synthetic data sets, to illustrate the differences between these two transfer functions. References [1] E. Zauderer. 1971, Uniform asymptotic solutions of the reduced wave equation. Journal of Mathematical Analysis and Application 30, pp. 157-171. [2] M. J. Yedlin. 1987, Uniform asymptotic solution for the Green’s function for the two-dimensional acoustic equation. J. Acoust. Soc. Am. 81(2) pp. 238-243. [3] J. Tromp, C. Tape and Q. Liu. 2005, Seismic tomography, adjoint methods, time reversal and banana-doughnut kernels. Geophysical Journal International 160(1), pp. 195-216. [4] I. Iturbe, P. Roux, J. Virieux and B. Nicolas. 2009, Travel-time sensitivity kernels versus diffraction patterns obtained through double beam-forming in shallow water. J. Acoust. Soc. Am. 126(2), pp. 713-720. [5] J. R. Ernst, A. G. Green, H. Maurer and K. Holliger. 2007, Application of a new 2D time-domain full-waveform inversion scheme to crosshole radar data. Geophysics 72, pp. J53-J64.

  11. The potential of geotourism to meet the challenges of geoconservation in Oman

    NASA Astrophysics Data System (ADS)

    Roepert, A.; Zacke, A.; Hoffmann, G.

    2012-04-01

    Geoconservation as well as the concept of geological heritage has been understood as a new challenge for geological research in the last decades. Traditionally, the approach to geology has been more often linked to the exploitation of resources rather than to preservation of sites of geological value. In many countries the protection of geological sites is connected to the protection of biodiversity. The Sultanate of Oman is situated in the north-eastern part of the Arabian Peninsula. During Late Cretaceous large parts of former Tethyan oceanic crust were obducted onto the Arabian plate to form one of the world's best exposed and best studied ophiolites (Searle and Cox, 1999). The Semail Ophiolite might be the best known example of Oman's geological heritage. However, the country offers far more geological features which are spectacular or unique. To name just a few, there are e.g. Neoproterocoic glacial sediments (Allen, 2007); surface piercing salt-domes (Al Siyabi and Newall, 2005); huge sand-deserts (Goudie et al., 1999); a mountain-range 3000 m high with spectacular canyons as Wadi Nakhr (Kusky et al., 2005); as well as outcropping Moho (Boudier and Nicolas, 1995). As the country is located in the arid to semiarid climatic zone, soil-development is very limited as is vegetation cover. Therefore the geology is easy accessible - a fact that attracts more and more geosciences students to study geology in the field, as well as tourists to enjoy the spectacular scenery. However, concerning the whole field of nature conservation, Oman just started facing the fact of increasing destruction of landscapes including endangering of biodiversity. The country's economic development mainly took place within the last 40 years. Large infrastructure projects are under construction to meet the needs of ongoing development of land and resources. As a consequence thereof geological heritage is in danger of being destroyed due to lack of awareness. The aim of this study is to

  12. Palaeoglacial lake and outburst flood reconstructions along the southern late-glacial Cordilleran Ice Sheet margin: implications for ice sheet reconstruction and landscape evolution

    NASA Astrophysics Data System (ADS)

    Cripps, Jonathan; Brennand, Tracy

    2016-04-01

    Proglacial lakes are crucial in controlling the meltwater and sediment flux from decaying ice margins, affect local ice dynamics, and can influence local and regional weather and climate. They are also potential sources of outburst floods, which can have major impacts on regional geomorphology and drainage networks. As such, proglacial lakes are important components of deglacial environments, and reconstructing proglacial lakes during decay of past ice sheets will improve understanding of their potential influence in the future. The presence of palaeo-ice-dammed lakes in valleys dissecting the southern Interior Plateau of British Columbia (BC), is evident in abundant lake-bottom sediments, deltaic deposits and shorelines. To date, the palaeogeography of these lakes have not been well constrained, and the damming ice margins have been proposed under a paradigm of Cordilleran Ice Sheet (CIS) stagnation - lakes dammed by dead-ice lobes in valleys where ice was thickest; this paradigm has been challenged by recent studies elsewhere on the Interior Plateau that support generally active, systematic retreat of the ice margin to the north and west. This project reinvestigated glacial Lake Nicola (gLN) on the northern Thompson Plateau, the key site for development of the stagnation paradigm, to improve palaeogeographic and palaeohydrological reconstructions of this basin. Five lake stages for gLN have been identified on the basis of shoreline and delta elevations and the extent of lake-bottom sediments. Glacioisostatic tilts were reconstructed for the four most extensive stages of between 1.6 and 1.9 m/km up to the north-northwest. Areal extent and lake volume for each lake were extracted by plotting lake planes onto DEMs adjusted to these reconstructed tilts; maximum volumes for each stage are in the order of 10 km3, with the largest reconstructed at 260km3. These lakes expanded and lowered to the northwest, as progressively lower outlets were opened by ice recession in

  13. The Second World Cholera Pandemic (1826-1849) in the Kingdom of the Two Sicilies with Special Reference to the Towns of San Prisco and Forio d'Ischia.

    PubMed

    Imperato, Pascal James; Imperato, Gavin H; Imperato, Austin C

    2015-12-01

    people died from cholera in Forio out of a population of 5500. This resulted in a cholera-specific mortality rate of 57.5/1000 population. Among the first 42 fatal cases in whom the disease was documented on their death certificates, ages ranged from 15 to 88 years. The mean age was 52.4 years. The majority of deaths (57.1 %) were among women. We reached beyond the statistics of this epidemic by presenting an in-depth study of the first person to die from cholera in Forio d'Ischia, Nicola Antonio Insante. By focusing on him, we were able to develop a broad account of the social and economic consequences of his death on his family. At the same time, our research demonstrated the resiliency of his immediate and distant descendants. Similarly, we discuss the D'Ambra and Scola families of Forio d'Ischia, and the Caruso and Valenziano families of San Prisco, among whom a number died from cholera in 1837.

  14. PREFACE: Peyresq Physics Workshops 11 and 12—'Micro and Macro Structure of Spacetime', Peyresq, Alpes de Haute Provence, France (17 23 June 2006 and 16 22 June 2007)

    NASA Astrophysics Data System (ADS)

    Arteaga, D.; Verdaguer, E.

    2008-08-01

    -optical and condensed matter physics. The richness of this theme spans a diverse spectrum of current topics which can be gleaned from the titles of the talks presented in these two meetings. Peyresq is a medieval Provençal village situated 100km from Nice at an altitude of 1528m. The village was founded in the early 13th century. At the beginning of the 17th century there were around 50 houses and by 1851 the village counted 208 inhabitants distributed among 53 families. Like many other villages of Haute Provence, it was almost completely deserted after the Second World War. During the 1950s the village was progressively entirely rebuilt in its original spirit and style by students of Belgian universities, mainly the Université Libre de Bruxelles, under the guidance of Mady and Toine Smets. The aim was to create a 'Foyer d'Humanisme', an international humanistic center for cultural, artistic, and scientific pursuits. The workshops were financed by the Fondation Peyresq, Foyer d'Humanisme, the Fondation Nicolas Claude Fabri de Peyresq, and OLAM (Association pour la Recherche Fondamentale, Brussels). We would like to thank all these institutions for their help and financial support. We extend our warm appreciation to Madame Mady Smets without whom none of this work could have come to light. We would like to thank all the participants for the many lively discussions that we have enjoyed and for their effort in preparing written contributions. We would also like to thank the editorial staff of Classical and Quantum Gravity, especially Tom Spicer, Joseph Tennant and Eirini Messaritaki, for their support and efficiency in preparing this volume. Finally, we thank Edgar Gunzig and Bei-Lok Hu as the main driving forces behind the organization of these workshops.

  15. The actual status of Astronomy in Moldova

    NASA Astrophysics Data System (ADS)

    Gaina, A.

    The astronomical research in the Republic of Moldova after Nicolae Donitch (Donici)(1874-1956(?)) were renewed in 1957, when a satellites observations station was open in Chisinau. Fotometric observations and rotations of first Soviet artificial satellites were investigated under a program SPIN put in action by the Academy of Sciences of former Socialist Countries. The works were conducted by Assoc. prof. Dr. V. Grigorevskij, which conducted also research in variable stars. Later, at the beginning of 60-th, an astronomical Observatory at the Chisinau State University named after Lenin (actually: the State University of Moldova), placed in Lozovo-Ciuciuleni villages was open, which were coordinated by Odessa State University (Prof. V.P. Tsesevich) and the Astrosovet of the USSR. Two main groups worked in this area: first conducted by V. Grigorevskij (till 1971) and second conducted by L.I. Shakun (till 1988), both graduated from Odessa State University. Besides this research areas another astronomical observations were made: Comets observations, astroclimate and atmospheric optics in collaboration with the Institute of the Atmospheric optics of the Siberian branch of the USSR (V. Chernobai, I. Nacu, C. Usov and A.F. Poiata). Comets observations were also made since 1988 by D. I. Gorodetskij which came to Chisinau from Alma-Ata and collaborated with Ukrainean astronomers conducted by K.I. Churyumov. Another part of space research was made at the State University of Tiraspol since the beggining of 70-th by a group of teaching staff of the Tiraspol State Pedagogical University: M.D. Polanuer, V.S. Sholokhov. No a collaboration between Moldovan astronomers and Transdniestrian ones actually exist due to War in Transdniestria in 1992. An important area of research concerned the Radiophysics of the Ionosphere, which was conducted in Beltsy at the Beltsy State Pedagogical Institute by a group of teaching staff of the University since the beginning of 70-th: N. D. Filip, E

  16. PREFACE: Dynamics of low-dimensional systems Dynamics of low-dimensional systems

    NASA Astrophysics Data System (ADS)

    Bernasconi, M.; Miret-Artés, S.; Toennies, J. P.

    2012-03-01

    Hedgeland, Andrew P Jardine, William Allison, John Ellis and Gil Alexandrowicz Fast emission dynamics in droplet epitaxy GaAs ring-disk nanostructures integrated on SiL Cavigli, S Bietti, M Abbarchi, C Somaschini, A Vinattieri, M Gurioli, A Fedorov, G Isella, E Grilli and S Sanguinetti Assessing the composition of hetero-epitaxial islands via morphological analysis: an analytical model matching GeSi/Si(001) dataR Gatti, F Pezzoli, F Boioli, F Montalenti and Leo Miglio Carbon sp chains in graphene nanoholesIvano E Castelli, Nicola Ferri, Giovanni Onida and Nicola Manini Elastic fields and moduli in defected grapheneRiccardo Dettori, Emiliano Cadelano and Luciano Colombo Tuning the plasmon energy of palladium-hydrogen systems by varying the hydrogen concentrationV M Silkin, R Dìez Muiño, I P Chernov, E V Chulkov and P M Echenique Plasmon tsunamis on metallic nanoclustersA A Lucas and M Sunjic Ab initio characterization of graphene nanoribbons and their polymer precursorsRengin Peköz, Xinliang Feng and Davide Donadio First-principles phonon calculations of Fe4+ impurity in SrTiO3E Blokhin, E A Kotomin and J Maier Phonon dispersion of quasi-freestanding graphene on Pt(111)Antonio Politano, Antonio Raimondo Marino and Gennaro Chiarello Vibrations of Au13 and FeAu12 nanoparticles and the limits of the Debye temperature conceptGhazal Shafai, Marisol Alcántara Ortigoza and Talat S Rahman Triple quantum dots as charge rectifiers M Busl and G Platero

  17. PREFACE: XIV International Conference on Calorimetry in High Energy Physics

    NASA Astrophysics Data System (ADS)

    Wang, Yifang

    2011-03-01

    (Texas Tech University), Weidong Li (IHEP) 3) Readout techniques - Gerald Eigen (University of Bergen), Zheng Wang (IHEP) 4) Operating calorimeters and calibration - Marat Gataullin (CERN), Francesco Lanni (BNL) 5) Future calorimetry - Tohru Takeshita (Shinshu University), Lei Xia (Argonne National Laboratory) 6) Astrophysics and neutrino calorimetry - Giuliana Fiorillo (INFN), Hiro Tajima (SLAC) List of Participants AKCHURIN, NuralTexas Tech University AN, ZhenghuaIHEP AUFFRAY, EtiennetteCERN BANFI, DaniloUniversità degli Studi di Milano, INFN BASHARINA-FRESHVILLE, AnastasiaUniversity College London BEAUCHEMIN, Pierre-HuguesUniversity of Oxford BENAGLIA, Andrea DavideUniversity of Milano - Bicocca and INFN BIAN, JianminIHEP BIINO, CristinaINFN BILKI, BurakUniversity of Iowa BLAHA, JanLAPP BOUDRY, VincentLLR / CNRS-IN2P3 CAI, XiaoIHEP CAPONE, AntonioPhysics Department University "La Sapienza" and INFN CAVALLARI, FrancescaCERN and INFN Rome CECCHI, ClaudiaUniversity di Perugia e INFN CHANG, JinfanIHEP CHEN, HuchengBrookhaven National Laboratory CHILDERS, TaylorUniversität Heidelberg - Kirchhoff-Institut für Physik DAO, ValerioGeneva University - DPNC DE LA TAILLE, ChristopheIN2P3/OMEGA-LAL DIEMOZ, MarcellaINFN Roma DOTTI, AndreaCERN EIGEN, GeraldUniversity of Bergen EPIFANOV, DenisBudker Institute of Nuclear Physics FAIVRE, JulienLPSC Grenoble France FANG, JianIHEP FANG, ShuangshiIHEP FANTONI, AlessandraINFN - LNF FERRI, FedericoCEA/Saclay Irfu/SPP FERRONI, FernandoSapienza University & INFN Roma FISK, Henry EugeneFermilab GABALDON, CarolinaCERN GARUTTI, ErikaDESY GAUDIO, GabriellaIstituto Nazionale di Fisica Nucleare - Sezione di Pavia GILLBERG, DagCarleton University GIOVANNINI, PaolaMax-Planck-Institut für Physik GLAZOV, AlexanderDESY GRACHOV, OlegUniversity of Kansas HAPPACHER, FabioINFN HE, MiaoIHEP HORI, YasutoUniversity of Tokyo, CNS HU, TaoIHEP HULTH, Per-OlofStockholm University JUN, Soon YungCarnegie Mellon University JURK, StefanISEG Spezialelektronik gmb

  18. List of Posters

    NASA Astrophysics Data System (ADS)

    . Saturation effects in diffractive scattering at LHC By Oleg Selugin. A nonperturbative expansion method in QCD and R-related quantities By Igor Solovtsov. Z-scaling and high multiplicity particle Production in bar pp/pp & AA collisions at Tevatron and RHIC By Mikhail Tokarev. Scaling behaviour of the reactionsdd - > p↑ /3H and pd - > pd with pT at energy I-2 GeV By Yuri Uzikov. [ADS Note: Title formula can not be rendered correctly in ASCII.] CP violation, rare decays, CKM: Precision Measurements of the Mass of the Top Quark at CDF (Precision Top Mass Measurements at CDF) By Daniel Whiteson. Measurement of the Bs Oscillation at CDF By Luciano Ristori. The Bs mixing phase at LHCb By J. J. van Hunen. ATLAS preparations for precise measurements of semileptonic rare B decays By K. Toms. Hadron spectroscopy & exotics: Searches for radial excited states of charmonium in experiments using cooled antiproton beams By M. Yu. Barabanov. Retardation effects in the rotating string model By Fabien Buisseret and Claude Semay. Final results from VEPP-2M (CMD-2 and SND) By G. V. Fedotovich. Heavy Quark Physics: Prospects for B physics measurements using the CMS detector at the LHC By Andreev Valery. Heavy flavour production at HERA-B By Andrey Bogatyrev. B-Meson subleading form factors in the Heavy Quark Effective Theory (HQET) By Frederic Jugeau. Beyond the Standard Model: Monopole Decay in a Variable External Field By Andrey Zayakin. Two-Loop matching coefficients for the strong coupling in the MSSM By Mihaila Luminita. Test of lepton flavour violation at LHC By Hidaka Keisho. Looking at New Physics through 4 jets and no ET By Maity Manas. Are Preons Dyons? Naturalness of Three Generations By Das Chitta Ranjan. SUSY Dark Matter at Linear Collider By Sezen Sekmen, Mehmet Zeyrek. MSSM light Higgs boson scenario and its test at hadron colliders By Alexander Belyaev. Antiscalar Approach to Gravity and Standard Model By E. Mychelkin. GRID distributed analysis in high energy physics: PAX

  19. Infrared Images of an Infant Solar System

    NASA Astrophysics Data System (ADS)

    2002-05-01

    was obtained on August 15, 2001, under very good observing conditions (with "seeing" of 0.4 arcsec). Now the two reflection nebulae are clearly seen ( PR Photos 12b-c/02 ), and the dark dust lane is well resolved. The leader of the group, Nicolas Grosso , recalls the first impression when seeing the true shape of the object: "That is when we looked at each other and, with one voice, immediately decided to nickname it the `Flying Saucer'!". The nature of the new object Seven young stars in the Rho Ophiuchi star-forming region are known to display similar reflection nebulae surrounding a dark lane (suggesting the presence of a dusty disk), but these objects are all still deeply embedded in the dense cores of this dark cloud. They are mostly protostars with ages of about 100,000 years, surrounded by a remnant infalling envelope. On the other hand, astronomers think that the newly found object has an age of about 1 million years and is in a more evolved stage than those in the neighboring Rho Ophiuchi star-forming region. The new disk is located at the periphery of the dark cloud and is much less obscured than the younger objects still embedded in the dense dark cloud nursery, thus allowing a much clearer view of the dust disk. The resolved circumstellar dust disk in the "Flying Saucer" has a radius of about 300 Astronomical Units (45 billion km), or 5 times the size of the orbit of Neptune (assuming the same distance as the Rho Ophiuchi star-forming cloud, 500 light-years). From model calculations, the astronomers find that it is inclined only about 4° to the line of sight and therefore seen very nearly from the side. A lower limit to the total mass of the disk is about twice the mass of planet Jupiter, or 600-700 times the mass of the Earth. A study of the recorded (reflected) light from the optical to the near-infrared indicates that the central young solar-type star has a temperature of about 3000 K and 0.4 times the luminosity of our actual Sun. A detailed analysis

  20. Editorial

    NASA Astrophysics Data System (ADS)

    2003-06-01

    Letter to the Editor A Letter to the Editor should present new results, likely to stimulate further research and be of interest to the wider atomic, molecular and optical physics community. Above all the results should be sufficiently new and important to merit rapid publication as a Letter, which implies accelerated refereeing procedures. This should be made clear either in the body of the Letter, if appropriate, or with a supporting cover letter from the author on submission to the journal. Letters will have an upper limit of eight journal pages and, as an additional quality check, two referees instead of one will be used to review them. The Board will be asked to make a final publication decision in the event of two conflicting reports. With these measures in place it is hoped that the important new results will receive the exposure they deserve as a Letter. If you have any questions or comments on this or anything relating to J. Phys. B please contact Nicola Gulley, Publisher, J. Phys. B (E-mail: jphysb@iop.org).

  1. New Efforts to Identify Dark Matter

    NASA Astrophysics Data System (ADS)

    Kohler, Susanna

    2016-09-01

    among them.In the early universe, small density perturbations on sub-galactic scales produce dwarf galaxies in the lambda-CDM model. But in the warm dark matter model, the longer free streaming length of the dark matter particles smooth out some of those small perturbations. This results in the formation of fewer dwarf galaxies which fits better with our current observations.Limits on Warm Dark MatterSo how can we test this alternative model? The maximum number density of dark-matter halos predicted by the warm dark matter model at a given redshift depends on the mass of the candidate dark matter particle: a larger particle mass means that more halos form. We therefore can set lower limits on the mass of dark matter particles in a two-step process:Calculate the maximum number density of dark matter halos predicted by models, andCompare this to the measured abundance of the faintest galaxies at a given redshift.Another way of looking at it: for different values of the dark matter particle mass mX, this shows the maximum number density of dark matter halos predicted at z = 6. The shaded areas represent the observed number density of faint galaxies at different confidence levels. [Menci et al. 2016]Recently, unprecedented new Hubble observations of ultra-faint, lensed galaxies in the Hubble Frontier Fields at z~6 have allowed for the discovery of more faint galaxies at this redshift than ever before. Now, a team of scientists led by Nicola Menci (INAF Rome) have used these observations to set a new limit on the lowest mass that candidate dark matter particles can have.Menci and collaborators find that these new observations constrain the particle masses to be above 2.9 keV at the 1 confidence level. These constitute the tightest constraints on the mass of candidate warm dark matter particles derived to date, and they even allow us to rule out some production mechanisms for theorized particles.Extending this analysis to other clusters with deep observations will only

  2. PREFACE: International Symposium on Non-Equilibrium Soft Matter 2010 International Symposium on Non-Equilibrium Soft Matter 2010

    NASA Astrophysics Data System (ADS)

    Kawakatsu, T.; Matsuyama, A.; Ohta, T.; Tanaka, H.; Tanaka, S.

    2011-07-01

    , Culture, Sports, Science and Technology (MEXT) of Japan. We thank those who contributed to this symposium as well as members of the 'Soft Matter Physics' project for their valuable discussions and collaborations. Non-equilibrium soft matter contents Insights on raft behavior from minimal phenomenological models G Garbès Putzel and M Schick Dynamical membrane curvature instability controlled by intermonolayer friction Anne-Florence Bitbol, Jean-Baptiste Fournier, Miglena I Angelova and Nicolas Puff Numerical investigations of the dynamics of two-component vesicles Takashi Taniguchi, Miho Yanagisawa and Masayuki Imai Asymmetric distribution of cone-shaped lipids in a highly curved bilayer revealed by a small angle neutron scattering technique Y Sakuma, N Urakami, T Taniguchi and M Imai Hydration, phase separation and nonlinear rheology of temperature-sensitive water-soluble polymers Fumihiko Tanaka, Tsuyoshi Koga, Isamu Kaneda and Françoise M Winnik Morphology and rheology of an immiscible polymer blend subjected to a step electric field under shear flow H Orihara, Y Nishimoto, K Aida, Y H Na, T Nagaya and S Ujiie Surfactant-induced friction reduction for hydrogels in the boundary lubrication regime Kosuke Kamada, Hidemitsu Furukawa, Takayuki Kurokawa, Tomohiro Tada, Taiki Tominaga, Yukihiro Nakano and Jian Ping Gong Fabrication and structural analysis of polyrotaxane fibers and films Yasuhiro Sakai, Kentaro Ueda, Naoya Katsuyama, Koji Shimizu, Shunya Sato, Jun Kuroiwa, Jun Araki, Akira Teramoto, Koji Abe, Hideaki Yokoyama and Kohzo Ito Micellization kinetics of diblock copolymers in a homopolymer matrix: a self-consistent field study Raghuram Thiagarajan and David C Morse Hierarchical self-assembly of two-length-scale multiblock copolymers Gerrit ten Brinke, Katja Loos, Ivana Vukovic and Gerrit Gobius du Sart Kaleidoscopic morphologies from ABC star-shaped terpolymers Yushu Matsushita, Kenichi Hayashida, Tomonari Dotera and Atsushi Takano Direct and inverted nematic

  3. A special year, thanks and a look ahead

    NASA Astrophysics Data System (ADS)

    Birch, David J. S.

    2014-01-01

    Dear authors, reviewers and readers of Measurement Science and Technology , I would like to thank all those who have published papers with us in 2013, and offer a special thanks to those of you who have given up much of your precious time and kindly reviewed articles for the journal. 2013 was of course a very special year for the journal, marking the 90th anniversary of the journal's foundation, as Journal of Scientific Instruments. In order to mark the anniversary we started the year with a historical perspective of the journal [1], and a historical review of 90 years of dielectric properties measurement of materials [2]. The celebrations continued with a stimulating meeting at the Institute of Physics in London in March, entitled 'Frontiers of Measurement'. In keeping with the multidisciplinary ethos of the journal, the speakers covered a diverse range of topics, all linked by the common language of measurement science. Patrick Gill of NPL talked about atomic clocks, Bruce Tromberg of the Beckman Laser Institute and Medical Clinic covered biophotonics, Roger Bisby of the University of Salford lectured on developments in biochemical techniques, Ivan Marusic of the University of Melbourne spoke on fluids and Mervyn Miles of the University of Bristol described recent developments in atomic force microscopy. Nicola Gulley, Editorial Director of IOP Publishing (IOPP), briefed the meeting on some of the latest developments in the world of scientific publishing. The meeting ended with a presentation to Sharon D'Souza, outgoing Publisher of the journal, and a welcome for Ian Forbes who has taken over the role. On behalf of all the Editorial Board I would like to offer a very special thanks to Sharon for all her great work for the journal over many years and wish her every success in her new IOPP posts as Publisher of Reports in Progress in Physics and the recently launched Methods and Applications in Fluorescence. Ian Forbes comes to the journal with a PhD in Physics

  4. Strong and Electroweak Matter 2004

    NASA Astrophysics Data System (ADS)

    Eskola, Kari J.; Kainulainen, Kimmo; Kajantie, Keijo; Rummukainen, Kari

    results confront models / M. D'Elia and M. P. Lombardo -- Singlet free energies of a static quark-antiquark pair / K. Petrov -- Contributions to transport theory from multi-particle interactions and production processes / M. E. Carrington -- Transport coefficients and the 2PI effective action in the large N limit / G. Aarts and J. M. Martinez Resco -- Thermal features far from equilibrium: prethermalization / S. Borsányi -- QCD phase diagram at small Baryon densities from imaginary [symbol]: status report / O. Philipsen and Ph. de Forcrand -- Two loop renormalisation of the magnetic coupling in hot QCD and spatial Wilson loop / P. Giovannangeli -- Thermodynamics of deconfined QCD at small and large chemical potential / A. Ipp -- Evading the infrared problem of thermal QCD / Y. Schroder -- Chiral mesons in hot matter / A. Gómez Nicola, F. J. Llanes-Estrada and J. R. Peláez -- Thermal production of axinos in the early universe / A. Brandenburg and F. D. Steffen -- The 2-PI-1/N approximation applied to tachyonic preheating / A. Tranberg, A. Arrizabalaga and J. Smit -- Nonequilibrium dynamics in scalar hybrid models / J. Baacke and A. Heinen -- Photon mass in inflation and nearly minimal magnetogenesis / T. Prokopec -- Transport equations for chiral fermions to order [symbol] and electroweak Baryogenesis / S. Weinstock, M. G. Schmidt and T. Prokopec -- The gapless 2SC phase / M. Huang and I. A. Shovkovy -- Gapless CFL and its competition with mixed phases / M. Alford, C. Kouvaris and K. Rajagopal -- Transport coefficients in color superconducting quark matter / C. Manuel -- Renormalization and resummation in finite temperature field theories / A. Jakovác and Zs. Szép -- Renormalization and gauge symmetry for 2PI effective actions / U. Reinosa -- Out-of-equilibrium massless Schwinger model / R. F. Alvarez-Estrada -- Selfconsistent calculations of hadrons at finite temperature / C. Beckmann -- Fermion production in classical fields / D. D. Dietrich -- Numerical study of

  5. Orogenic, Ophiolitic, and Abyssal Peridotites

    NASA Astrophysics Data System (ADS)

    Bodinier, J.-L.; Godard, M.

    2003-12-01

    of ophiolites (mid-ocean ridges versus supra-subduction settings - e.g., Nicolas, 1989). In addition, the mantle structures and mineralogical compositions of tectonically emplaced mantle rocks may be obscured by deformation and metamorphic recrystallization during shallow upwelling, exhumation, and tectonic emplacement. Metamorphic processes range from high-temperature recrystallization in the stability field of plagioclase peridotites ( Rampone et al., 1993) to complete serpentinization (e.g., Burkhard and O'Neill, 1988). Some garnet peridotites record even more complex evolutions. They were first buried to, at least, the stability field of garnet peridotites, and, in some cases to greater than 150 km depths ( Dobrzhinetskaya et al., 1996; Green et al., 1997; Liou, 1999). Then, they were exhumed to the surface, dragged by buoyant crustal rocks ( Brueckner and Medaris, 2000).Alternatively, several peridotite massifs are sufficiently well preserved to allow the observation of structural relationships between mantle lithologies that are larger than the sampling scale of mantle xenoliths. It is possible in these massifs to evaluate the scale of mantle heterogeneities and the relative timing of mantle processes such as vein injection, melt-rock reaction, deformation, etc… Detailed studies of orogenic and ophiolitic peridotites on centimeter- to kilometer-scale provide invaluable insights into melt transfer mechanisms, such as melt flow in lithospheric vein conduits and wall-rock reactions (Bodinier et al., 1990), melt extraction from mantle sources via channeled porous flow ( Kelemen et al., 1995) or propagation of kilometer-scale melting fronts associated with thermalerosion of lithospheric mantle ( Lenoir et al., 2001). In contrast, mantle xenoliths may be used to infer either much smaller- or much larger-scale mantle heterogeneities, such as micro-inclusions in minerals ( Schiano and Clocchiatti, 1994) or lateral variations between lithospheric provinces ( O

  6. List of Participants

    NASA Astrophysics Data System (ADS)

    2011-09-01

    KhodelVictorKurchatov Institute, Moscowvak@wuphys.wustl.edu KimuraMasaakiHokkaido University, Sapporomasaaki@nucl.sci.hokudai.ac.jp LacroixDenisGANIL, Caenlacroix@ganil.fr LiangHaozhaoPeking University, Beijinghzliang@pku.edu.cn MargueronJérômeIPN Orsayjerome.margueron@ipno.in2p3.fr MassotElisabethIPN Orsaymassot@ipno.in2p3.fr MengJiePeking University, Beijingmengj@pku.edu.cn MillerTomaszWarsaw University of Technologymillert@student.mini.pw.edu.pl MoghrabiKassemIPN Orsaymoghrabi@ipno.in2p3.fr NapolitaniPaoloIPN Orsaynapolita@ipno.in2p3.fr NeffThomasGSI Darmstadtt.neff@gsi.de NguyenVan GiaiIPN Orsaynguyen@ipno.in2p3.fr OtsukaTakaharuUniversity of Tokyootsuka@phys.s.u-tokyo.ac.jp PilletNathalie-MarieCEA-DAM, Arpajonnathalie.pillet@cea.fr QiChongKTH Stockholmchongq@kth.se RamananSunethraICTP Triestesramanan@ictp.it RingPeterTU Munichring@ph.tum.de Rios HuguetArnauUniversity of Surreya.rios@surrey.ac.uk RivetMarie-FranceIPN Orsayrivet@ipno.in2p3.fr RobledoLuisUniversidad Autonoma de Madridluis.robledo@uam.es Roca MazaXavierINFN Milanoxavier.roca.maza@mi.infn.it RöpkeGerdRostock Universitygerd.roepke@uni-rostock.de RowleyNeilIPN Orsayrowley@ipno.in2p3.fr SagawaHiroyukiUniversity of Aizusagawa@u-aizu.ac.jp SandulescuNicolaeIFIN-HH, Bucharestsandulescu@theory.nipne.ro SchuckPeterIPN Orsayschuck@ipno.in2p3.fr SedrakianArmenGoethe Universität Frankfurtsedrakian@th.physik.uni-frankfurt.de SeveryukhinAlexeyJINR Dubnasever@theor.jinr.ru SogoTakaakiIPN Orsaysogo@ipno.in2p3.fr SomàVittorioCEA Saclayvittorio.soma@cea.fr StrinatiGiancarloUniversità di Camerinogiancarlo.strinati@gmail.com SuharaTadahiroKyoto Universitysuhara@ruby.scphys.kyoto-u.ac.jp SukhoruchkinSergeiPetersburg Nuclear Physics Institutesergeis@pnpi.spb.ru SuzukiToruTokyo Metropolitan Universitysuzukitr@tmu.ac.jp SuzukiToshioNihon University, Tokyosuzuki@chs.nihon-u.ac.jp TarpanovDimitarINRNE, Sofiadimitert@yahoo.co.uk Tohsaki-SuzukiAkihiroOsaka Universitytohsaki@rcnp.osaka-u.ac.jp TypelStefanGSI Darmstadts

  7. PREFACE: EMAG NANO 2005: Imaging, Analysis and Fabrication on the Nanoscale

    NASA Astrophysics Data System (ADS)

    2006-01-01

    and Nicola Deedman of the CEM Group for co-ordinating the Trade Exhibition, and Claire Pantlin and Jasmina Bolfek-Radovani of the IoP without whom there'd be no show on the road! A special thanks also to Jane Lowe of the IoP for her sterling work collating these proceedings! Paul D Brown, University of Nottingham (EMAG Chair) Richard Palmer, University of Birmingham (NPT Chair)

  8. EDITORIAL: Nano-enhanced! Nano-enhanced!

    NASA Astrophysics Data System (ADS)

    Demming, Anna

    2010-08-01

    In the early 19th century, a series of engineering and scientific breakthroughs by Nicolas Léonard Sadi Carnot, James Watt and many others led to the foundations of thermodynamics and a new pedigree of mechanical designs that reset the standards of engineering efficiency. The result was the industrial revolution. In optical- and electronics- based nanotechnology research, a similarly subtle bargain is being made; we cannot alter the fact that systems have a finite response to external excitations, but what we can do is enhance that response. The promising attributes of ZnO have long been recognised; its large band gap and high exciton binding energy lend it to a number of applications from laser diodes, LEDs, optical waveguides and switches, and acousto-optic applications to sun cream. When this material is grown into nanowires and nanorods, the material gains a whole new dimension, as quantum confinement effects come into play. Discovery of the enhanced radiative recombination, which has potential for exploitation in many optical and opto-electronic applications, drove intensive research into investigating these structures and into finding methods to synthesise them with optimised properties. This research revealed further subtleties in the properties of these materials. One example is the work by researchers in the US reporting synthesis procedures that produced a yield—defined as the weight ratio of ZnO nanowires to the original graphite flakes—of 200%, and which also demonstrated, through photoluminescence analysis of nanowires grown on graphite flakes and substrates, that graphite induces oxygen vacancies during annealing, which enhances the deep-level to near-band-edge emission ratio [1]. Other one-dimensional materials that provide field emission enhancements include carbon nanotubes, and work has been performed to find ways of optimising the emission efficiency from these structures, such as through control of the emitter density [2]. One of the

  9. Exchanging knowledge and working together in COST Action TU1208: Short-Term Scientific Missions on Ground Penetrating Radar

    NASA Astrophysics Data System (ADS)

    Santos Assuncao, Sonia; De Smedt, Philippe; Giannakis, Iraklis; Matera, Loredana; Pinel, Nicolas; Dimitriadis, Klisthenis; Giannopoulos, Antonios; Sala, Jacopo; Lambot, Sébastien; Trinks, Immo; Marciniak, Marian; Pajewski, Lara

    2015-04-01

    creating a robust methodological foundation for the combined analysis of electromagnetic-induction and GPR data. The fifth STSM was carried out by Loredana Matera, who visited Jacopo Sala at 3d-radar (Norway). They tested an innovative reconfigurable stepped-frequency GPR, designed and realised in Italy. The prototype was compared with commercial equipment produced in Norway. Through laboratory experiments as well as outdoor campaigns in urban scenarios with archaeological remarks, a deeper knowledge of the Italian prototype was achieved and plans were made to improve it. Finally, Nicolas Pinel visited Sébastien Lambot at the Université catholique de Louvain (UCL); the last STSM presented in this abstract, was devoted to investigating how to model the effect of soil roughness in the inversion of ultra wide-band off-ground monostatic GPR signals. The aim of this research is the noninvasive quantification of soil properties through the use of GPR. The work focused on incorporating the improved asymptotic forward electromagnetic model developed by Pinel et al. in the multilayer Green function code developed at UCL. Acknowledgement The Authors thank COST, for funding the Action TU1208 'Civil Engineering Applications of Ground Penetrating Radar,' supporting these STSMs.

  10. An analysis of the first three catalogues of southern star clusters and nebulae

    NASA Astrophysics Data System (ADS)

    Cozens, Glendyn John

    2008-06-01

    "If men like [John] Herschel are to spend the best years of their lives in recording for the benefit of a remote posterity the actual state of the heavens - what a galling discovery to find amongst their own contemporaries men [James Dunlop] who -- from carelessness and culpable apathy hand down to posterity a mass of errors -- [so] that four hundred objects out of six hundred could not be identified in any manner -- with a telescope seven times more powerful than that stated to have been used!" The denigration of James Dunlop and his catalogue of 629 southern nebulae and clusters produced in 1826 originated with John Herschel and was continued by others of his day. Was this criticism justified? Was James Dunlop guilty of "carelessness and culpable apathy"? Were there "four hundred objects out of six hundred" which could not be identified, and if so, was there an explanation for this large shortfall? This question led to a search within Dunlop's 1826 catalogue to rediscover, if possible, some of the missing objects and to reinstate Dunlop, if justified, as a bona fide astronomer. In doing this, Dunlop's personal background, education and experience became relevant, as did a comparison with the catalogue of 42 southern nebulae and clusters produced by Nicolas-Louis de La Caille in 1751-2, and the 1834-8 catalogue of 1708 southern nebulae and clusters by John Herschel, who found the Dunlop catalogue so galling. To place the three southern catalogues in their historical context, a brief overview of these and the first three northern catalogues was made. Biographical information, descriptions of their equipment and comments on their observing techniques were included, where obtainable, for each of the authors of the three southern catalogues. However the main objective of this thesis was to determine which of the 629 objects in the Dunlop catalogue exist and then using these objects in a revised Dunlop catalogue, to statistically analyse and compare it with the content

  11. EDITORIAL: 19th International Conference on General Relativity and Gravitation (GR19), México, 4-9 July 2010 19th International Conference on General Relativity and Gravitation (GR19), México City, México, 4-9 July 2010

    NASA Astrophysics Data System (ADS)

    Marolf, Don; Sudarsky, Daniel

    2011-06-01

    of Pure and Applied Physics (IUPAP), The International Society on General Relativity and Gravitation, the 'Benemerita' Autonomous University of Puebla (BAUP), the University Michoacana San Nicolas de Hidalgo, the University of Veracruz, the University of Guadalajara, the University of Guanajuato, the University Iberoamericana, the University of Sinaloa, the University of Zacatecas, the Advanced Institute of Cosmology (IAC), as well as the Government of the Federal District of Mexico City. Don Marolf and Daniel Sudarsky Guest Editors Conference photograph

  12. Panama.

    PubMed

    1985-05-01

    the Panamaian public, and the government sought for many years to renegotiate the treaty. Riots against the US in 1964 finally lead to renegotiation and the signing of new canal treaties in 1977. The new treaties became effective in October 1979. Under the terms of the treaty, Panama resumed control of the canal zone in 1979. The US will continue to operate the canal and retain primary responsibility for defending the canal through 1999; however, Panama, during the 1979-99 period, will gradually increase its control over the operation and defense of the canal, and in 1999 will assume full responsibility for operating the canal. Both countries are pledged to maintain the neutrality of the canal indefinitely. Each year, until 1999, Panama will receive a yearly annuity of US$10 million, US$.30 on each ton transiting the canal, and a contingency payment of up to US$10 million. Between 1903-68 Panama was controlled by a conservative and commercially oriented oligarchy. In 1968, the National Guard removed the president and instituted a junta government under the control of Brigdier General Torrijos Herrera. Between 1972-78 Torrijos was given extraordinary executive powers. The junta promoted economic policies favoring the rural areas and the lower and middle income groups. In 1978 a National Assembly was elected and in 1983 a new constitution was adopted. The constitution provides for an elected legislature, an elected president, and a judicial branch. In 1984, the current president, Nicolas Ardito Barletta, was elected on a coalition slate. Panama developed as an urban, service, and commercial economy due to its position as a transit point between the east and west. Half of the urban population resides in the metropolitan areas surrounding the canal. The country also has a large international banking community. The agricultural sector is small and poorly developed. (Abstract Truncated)

  13. Impact of vegetation and ecosystems on chlorine(-36) cycling and its modeling: from simplified approaches towards more complex biogeochemical tools

    NASA Astrophysics Data System (ADS)

    Thiry, Yves; Redon, Paul-Olivier; Gustafsson, Malin; Marang, Laura; Bastviken, David

    2013-04-01

    al., 2012), average Cl residence time in forest soils calculated for Clin and Clorg together was 5-fold higher that the residence time estimated for Clin alone (Redon et al., 2011), locally, Cl amount taken up by certain vegetation types can be larger than annual atmospheric deposits, the Cl in excess being recycled mainly by throughfall (Thiry, 2010), root uptake and chlorine transformation rates in soils are essential to calibrate dynamic compartment models since those processes control the persistence of chlorine in the whole system but data are still deficient for different land uses (Van den Hoof & Thiry, 2012). References: Bastviken, D., Thomsen, F., Svensson, T., Karlsson, S., Sandén, P., Shaw, G., Matucha, M., and Öberg, G. (2007). Chloride retention in forest soil by microbial uptake and by natural chlorination of organic matter. Geochim. Cosmochim. Acta, 71: 3182-3192. Gustavsson, M., Karlsson, S.,Öberg, G.,Sandén, P.,Svensson, T.,Valinia, S.,Thiry, Y. and Bastviken, D. (2012). Organic matter chlorination rates in different boreal soils: the role of soil organic matter content. Environmental Science & Technology, 46 (3): 1504-1510 Thiry, Y., 2010. Contribution à l'étude du cycle biogéochimique du chlore en écosystème forestier: cas d'un peuplement de pin sylvestre. Rapport Andra n° ENV.NT.ASTR.10.0068. IAEA (2010). Handbook of parameter values for the prediction of radionuclide transfer to humans in terrestrial and freshwater environments. Technical Report Series n° 472, Vienna, Austria. Öberg, G. (1998). Chloride and organic chlorine in soil. Acta hydrochimica et hydrobiologica, 26 (3): 137-144. Redon, P-O., Abdelouas, A., Bastviken, D., Cecchini, S. Nicolas, M. and Thiry, Y. (2011). Chloride and organic chlorine in forest soils: storage, residence times, and influence of ecological conditions. Environmental Science & Technology, 45: 7202-7208. Redon, P-O., Jolivet, C., Saby, N., Abdelouas, A.and Thiry, Y. (2012). Occurrence of natural organic

  14. A novel multi-temporal approach to wet snow retrieval with Sentinel-1 images (Conference Presentation)

    NASA Astrophysics Data System (ADS)

    Marin, Carlo; Callegari, Mattia; Notarnicola, Claudia

    2016-10-01

    by training the proposed method with examples extracted by [1] and refine this information by deriving additional training for the complex cases where the state-of-the-art algorithm fails. In addition, the multi-temporal information is fully exploited by modelling it as a series of statistical moments. Indeed, with a proper time sampling, statistical moments can describe the shape of the probability density function (pdf) of the backscattering time series ([3-4]). Given the description of the shape of the multi-temporal VV and VH backscattering pdfs, it is not necessary to explicitly identify which time instants in the time series are to be assigned to the reference image as done in the bi-temporal approach. This information is implicit in the shape of the pdf and it is used in the training procedure for solving the wet snow detection problem based on the available training samples. The proposed approach is designed to work in an alpine environment and it is validated considering ground truth measurements provided by automatic weather stations that record snow depth and snow temperature over 10 sites deployed in the South Tyrol region in northern Italy. References: [1] Nagler, T.; Rott, H., "Retrieval of wet snow by means of multitemporal SAR data," in Geoscience and Remote Sensing, IEEE Transactions on , vol.38, no.2, pp.754-765, Mar 2000. [2] Storvold, R., Malnes, E., and Lauknes, I., "Using ENVISAT ASAR wideswath data to retrieve snow covered area in mountainous regions", EARSeL eProceedings 4, 2/2006 [3] Inglada, J and Mercier, G., "A New Statistical Similarity Measure for Change Detection in Multitemporal SAR Images and Its Extension to Multiscale Change Analysis," in IEEE Transactions on Geoscience and Remote Sensing, vol. 45, no. 5, pp. 1432-1445, May 2007. [4] Bujor, F., Trouve, E., Valet, L., Nicolas J. M., and Rudant, J. P., "Application of log-cumulants to the detection of spatiotemporal discontinuities in multitemporal SAR images," in IEEE Transactions on

  15. EDITORIAL: Focus on Cloaking and Transformation Optics

    NASA Astrophysics Data System (ADS)

    Leonhardt, Ulf; Smith, David R.

    2008-11-01

    multi-frequency cloaking Andrea Alù and Nader Engheta Electromagnetic cloaking devices for TE and TM polarizations Filiberto Bilotti, Simone Tricarico and Lucio Vegni An aberration-free lens with zero F-number D Schurig Transformational optics of plasmonic metamaterials I I Smolyaninov An acoustic metafluid: realizing a broadband acoustic cloak J B Pendry and Jensen Li On the possibility of metamaterial properties in spin plasmas G Brodin and M Marklund A homogenization route towards square cylindrical acoustic cloaks Mohamed Farhat, Sébastien Guenneau, Stefan Enoch, Alexander Movchan, Frédéric Zolla and André Nicolet Transformation optics: approaching broadband electromagnetic cloaking A V Kildishev, W Cai, U K Chettiar and V M Shalaev Generalized field-transforming metamaterials Sergei A Tretyakov, Igor S Nefedov and Pekka Alitalo Electromagnetic beam modulation through transformation optical structures Xiaofei Xu, Yijun Feng and Tian Jiang Superantenna made of transformation media Ulf Leonhardt and Tomáš Tyc Material parameters and vector scaling in transformation acoustics Steven A Cummer, Marco Rahm and David Schurig Isotropic transformation optics: approximate acoustic and quantum cloaking Allan Greenleaf, Yaroslav Kurylev, Matti Lassas and Gunther Uhlmann Transformation optical designs for wave collimators, flat lenses and right-angle bends Do-Hoon Kwon and Douglas H Werner Alternative derivation of electromagnetic cloaks and concentrators A D Yaghjian and S Maci Solutions in folded geometries, and associated cloaking due to anomalous resonance Graeme W Milton, Nicolae-Alexandru P Nicorovici, Ross C McPhedran, Kirill Cherednichenko and Zubin Jacob Finite wavelength cloaking by plasmonic resonance N-A P Nicorovici, R C McPhedran, S Enoch and G Tayeb

  16. Looking Deep with Infrared Eyes

    NASA Astrophysics Data System (ADS)

    2006-07-01

    . "Nothing quite like it has ever been built before. The fact that it is working reliably and reaching its theoretical sensitivity is a testament to the hard work and skill of the engineering team at the UKATC." ESO PR Photo 24a/06 ESO PR Photo 26a/06 Faint Red Galaxy in the UKIDSS Ultra-Deep Survey A small amount of data was released in January 2006 and already teams led by Omar Almaini at the University of Nottingham and Nigel Hambly of the Institute for Astronomy at the University of Edinburgh are beginning to reveal some of the secrets of star and galaxy formation. Omar Almaini, Ross McLure and the Ultra Deep Survey team have been looking at distant galaxies by surveying the same region of sky night after night to see deeper and to find these very faint objects. This survey will be one hundred times larger than any similar survey attempted to date and will cover an area four times the size of the full Moon. So far several hundred thousand galaxies have been detected and among the early discoveries, nine remarkable galaxies have been found that appear to be 12 billion light years away. As it has taken 12 billion years for the light to travel from these galaxies to Earth, we are seeing them as they were when they were very young - only a billion years after the Big Bang. The newly discovered galaxies are unusual as they appear to be very massive for their age. This challenges thinking on how galaxies form, since it was thought that large galaxies form gradually over billions of years as smaller components merge together. "We're surveying an enormous volume of the distant Universe, which allows us to discover rare massive galaxies that were previously almost impossible to find. Understanding how these galaxies form is one of the Holy Grails of modern astronomy, and now we can trace them back to the edge of the known Universe" said Omar Almaini. ESO PR Photo 26b/06 ESO PR Photo 26b/06 Brown Dwarf Candidates in the Pleiades Cluster (UKIDSS) Nigel Hambly and Nicolas Lodieu

  17. Sensing at the nanoscale

    NASA Astrophysics Data System (ADS)

    Demming, Anna; Hierold, Christofer

    2013-11-01

    The merits of nanostructures in sensing may seem obvious, yet playing these attributes to their maximum advantage can be a work of genius. As fast as sensing technology is improving, expectations are growing, with demands for cheaper devices with higher sensitivities and an ever increasing range of functionalities and compatibilities. At the same time tough scientific challenges like low power operation, noise and low selectivity are keeping researchers busy. This special issue on sensing at the nanoscale with guest editor Christofer Hierold from ETH Zurich features some of the latest developments in sensing research pushing at the limits of current capabilities. Cheap and easy fabrication is a top priority. Among the most popular nanomaterials in sensing are ZnO nanowires and in this issue Dario Zappa and colleagues at Brescia University in Italy simplify an already cheap and efficient synthesis method, demonstrating ZnO nanowire fabrication directly onto silicon substrates [1]. Meanwhile Nicolae Barson and colleagues in Germany point out the advantages of flame spray pyrolysis fabrication in a topical review [2] and, maximizing on existing resources, researchers in Denmark and Taiwan report cantilever sensing using a US20 commercial DVD-ROM optical pickup unit as the readout source [3]. The sensor is designed to detect physiological concentrations of soluble urokinase plasminogen activator receptor, a protein associated with inflammation due to HIV, cancer and other infectious diseases. With their extreme properties carbon nanostructures feature prominently in the issue, including the demonstration of a versatile and flexible carbon nanotube strain sensor [4] and a graphene charge sensor with sensitivities of the order of 1.3 × 10-3 e Hz-1/2 [5]. The issue of patterning for sensing devices is also tackled by researchers in the US who demonstrate a novel approach for multicomponent pattering metal/metal oxide nanoparticles on graphene [6]. Changes in electrical

  18. EDITORIAL: Announcing the 2005 Measurement Science and Technology Outstanding Paper Awards

    NASA Astrophysics Data System (ADS)

    Foss, John; Dewhurst, Richard; Fujii, Kenichi; Regtien, Paul

    2006-06-01

    atomic force microscope (AFM) is combined with differential laser interferometers so that the atomic scale resolution of the AFM is accurately calibrated by optical interferometry, achieving an unprecedented uncertainty of 0.2 nm in measuring the pitches of about 50 nm. The instrument also calibrates the pitches in a wide scanning range. This paper analysed the uncertainty of the measurement in detail, helping to provide users with reliable certified reference materials for one-dimensional grating standards. 2005 Award Winners—Sensors and Sensing Systems The 2005 Measurement Science and Technology Outstanding Paper Award in the Sensors and Sensing Systems category has been awarded to Nicola Bowler and Yongqiang Huang (Iowa State University, USA) for the article 'Electrical conductivity measurement of metal plates using broadband eddy-current and four-point methods', published in volume 16, issue 11, pp 2193 2200. In making their recommendation the Sensors and Sensing Systems working group chaired by Professor Paul Regtien gave the following endorsement: The paper addresses two methods to measure the electrical conductivity of metal plates of various materials. In particular for ferromagnetic plates, traditional methods show relatively large measurement uncertainties. In this paper, the origins of these large inaccuracies are studied, and two alternative methods are presented that yield much better accuracies. Both methods—a broadband eddy-current and a four-point contact scheme—are extensively analysed theoretically as well as experimentally. The results are compared with other published data, for plates of brass, stainless steel and spring steel. An uncertainty analysis reveals the superiority of the newly introduced methods in the case of steel. The four-point method has the advantage of being easy to use. The paper is well-structured, with a good balance between theory and experiments, and a clear presentation of the measurement data and associated uncertainties

  19. ESA sees stardust storms heading for Solar System

    NASA Astrophysics Data System (ADS)

    2003-08-01

    it finally possible to study how stardust is distributed along the path of the Solar System through the local galactic environment. However, as it takes over 70 thousand years to traverse a typical galactic cloud, no abrupt changes are expected in the short term. Notes to editors The results of this investigation will appear in the October 2003 issue of Journal of Geophysical Research. The investigation has been conducted by a team lead by Markus Landgraf of ESA's European Space Operation Centre in Darmstadt (Germany) and including Harald Krüger, Nicolas Altobelli, and Eberhard Grün of the Max Planck Institute for Nuclear Physics in Heidelberg (Germany). Ulysses is the first mission to study the environment of space above and below the Sun's poles. It is a joint mission with NASA and has been in space since 1990, after a mission extension agreed in 2000. Launched from the Space Shuttle Discovery in October 1990, Ulysses has now completed two orbits, passing both the Sun's north and south pole on each occasion. Its data gave scientists their first look at the variable effect that the Sun has on the space that surrounds it. The Ulysses DUST experiment provides direct observations of dust grains weighing less than a millionth of a gram in interplanetary space as Ulysses moves along an orbit that takes it periodically away from the Sun and from the plane of the planets - a disc known as the ecliptic. DUST measures the mass, speed, flight direction, and electric charge of individual dust particles. Astronomers wanted to know what portion of dust is provided by comets and asteroids and what, instead, comes directly from interstellar space. By taking measurements when Ulysses was farthest from the Sun and high above the ecliptic, in regions where cometary dust can hardly reach, scientists were able to detect and isolate particles of stardust entering the Solar System from the outer space. To confirm that these dust grains are indeed of interstellar origin, Landgraf and

  20. PREFACE: First Mediterranean Conference on Classical and Quantum Gravity (MCCQG 2009)

    NASA Astrophysics Data System (ADS)

    Basilakos, Spyros; Cadoni, Mariano; Cavaglia, Marco; Christodoulakis, Theodosios; Vagenas, Elias C.

    2010-04-01

    Fisica, Universidade de Sao Paulo, Brasil) Antoniadis, Ignatios (CERN, Geneva, Switzerland) Arminjon, Mayeul (CNRS, Section of Theoretical Physics, France) Banados, Max (University of Oxford, UK) Basilakos, Spyros (RCAAM, Academy of Athens, Greece) Bastos, Catarina (IST, Departamento de Física, Portugal) Bertolami, Orfeu (IST, Departamento de Física, Portugal) Bevilaqua, Leandro Ibiapina (Instituto de Fisica, Universidade de Sao Paulo, Brazil) Bezerra De Mello, Eugenio (Dept. de Física, CCEN Universidade Federal da Paraíba, Brazil) Blake, Russ (Readify Pty Ltd, Australia) Bogdanos, Charalampos (LPT-Orsay, France) Burinskii, Alexander (Gravity Research Group NSI, Russian Academy of Sciences, Russia) Cadonati, Laura (University of Massachusetts, Amherst, USA) Cadoni, Mariano (Università di Cagliari, Italy) Capone, Monica (University of Turin, Italy) Cavaglià, Marco (University of Mississippi, USA) Chirco, Goffredo (SISSA-International School for Advanced Studies, Italy) Christodoulakis, Theodosios (University of Athens, Greece) Domingues Zarro, Carlos Augusto ((IST, Departamento de Física, Portugal) Durrer, Ruth (Université de Genève, Département de Physique Théorique, Switzerland) Fagnocchi, Serena (SISSA-International School for Advanced Studies, Italy) Finazzi, Stefano (SISSA-International School for Advanced Studies, Italy) Francia, Dario (University Paris 7 - APC, France) Ghosh, Subir (Indian Statistical Institute, India) Gomberoff, Andres (Universidad Catolica de Chile, Chile) Grumiller, Daniel (Institute for Theoretical Physics Vienna University of Technology, Austria) Herrera-Aguilar, Alfredo (IFM, Universidad Michoacana de San Nicolas de Hidalgo, Mexico) Hsu, Steve (University of Oregon, USA) Ichinose, Shoichi (University of Shizuoka, SFNS, Japan) Kiefer, Claus (Institute for Theoretical Physics, University of Cologne, Germany) Kokkotas, Kostas (Theoretical Astrophysics, Eberhard Karls University of Tuebingen, Germany) Kothawala, Dawood (IUCAA, Pune

  1. Obituary: Edwin E. Salpeter (1924-2008)

    NASA Astrophysics Data System (ADS)

    Trimble, Virginia; Terzian, Yervant

    2009-12-01

    shared Ed's moral disapproval. His 21 year term as the astrophysics member of the editorial board of Reviews of Modern Physics (1971-92) remains a record and arose from a combination of extremely good judgment and patience with authors, referees, and other editors. His experience as a member of the National Science Board (1978-84) was a less happy one, and he felt he had not been an effective one when the NSF decided to back out of supporting a national-facility large millimeter dish, leaving that territory to individual university groups and the Europeans. How many students did Ed Salpeter have? Well, lots. He was advisor or committee chair for students in computer and geological sciences as well as in physics and astronomy, and was sometimes part of teams he called "two chiefs and one Indian" for additional students. No complete list seems to exist, but the incomplete lists add up to at least 55. Of those, you are likely to have heard of or know (because we do!): Hubert Reeves (who has great-grandstudents of his own!), George Helou, Vahe Petrosian, Bill Newman, Nathan Krumm, Bruce Tarter, Jonathan Katz, Lars Bildsten, Allen Boozer, Bruce Draine, Robert Gould, Nicolas Krall, Richard Lovelace, David Stevenson, Hugh Van Horn, Lyle Hoffman, and Edvige Corbelli. Thus he lived to achieve that mark of maturity, being invited to retirement parties for ones students. Former students, collaborators, and all spoke uniformly of his generosity, quick understanding, and willingness to discuss science on any and all occasions. Among the honors Ed Salpeter received were four honorary D.Sc.'s, five academy memberships, and major prizes from the Royal Astronomical Society, the American Astronomical Society, the Astronomical Society of the Pacific, the American Physical Society, the Royal Swedish Academy, and the Astronomische Gesellschaft (AG). The text of his AG lecture was published in English, but he told one of us that he felt he no longer had a native language, because he couldn

  2. Huygens landing site to be named after Hubert Curien

    NASA Astrophysics Data System (ADS)

    2007-03-01

    scientific institutions. From 1966 to 1969, he was Scientific Director for Physics at the CNRS, France's scientific research centre, becoming its Director General in 1969. In 1973, he was given responsibility for reorganising research in France. From 1976 to 1984, he was President of the French space agency (CNES), and from 1984 to1993, served as Minister of Research and Space under four different governments. From 1981 to 1984, he was Chairman of the ESA Council, and he is now still remembered - among his many achievements - as one of the fathers of the Ariane programme and as a promoter of a Europe united through science. From 1994 to 1996, he also headed the European Organization for Nuclear Research (CERN), and in 1993, was elected to the French Academy of Science. For his work, Hubert Curien received the highest distinctions and awards. He was known for his great intelligence and managerial and political abilities, but also for his simplicity, modesty, sense of humour and willingness to listen to others. He died on 6 February 2005, and is survived by his wife, Perrine, and their sons, Nicolas, Christophe and Pierre-Louis. Huygens highlights The European-built Huygens probe was part of the Cassini-Huygens mission to Saturn - a joint endeavour of ESA, NASA and the Italian Space Agency (ASI). It is the most ambitious effort in planetary space exploration ever mounted. Launched on 15 October 1997, Cassini (a sophisticated robotic spacecraft designed to orbit the ringed planet and study the Saturnian system in detail), bearing the Huygens probe, reached Saturn on 1 July 2004. Cassini delivered Huygens to Saturn’s largest moon, Titan, on 14 January 2005. This was the first ever descent and landing onto a celestial body in the outer Solar System, and it provided the most spectacular view of Titan yet. During its 2½-hour descent onto this alien world, Huygens performed a series of measurements by means of its highly advanced suite of six instruments. It detected information

  3. PREFACE: XVth International Conference on Calorimetry in High Energy Physics (CALOR2012)

    NASA Astrophysics Data System (ADS)

    Akchurin, Nural

    2012-12-01

    Universita' & INFN Milano-Bicocca TADEVOSYAN, Vardan AANL TAKESHITA, Tohru Shinshu University TALAGA, Richard Argonne National Laboratory TAPAN, Ilhan Uludag University TERWORT, Mark DESY TSAI, Oleg UCLA TULLY, Christopher Princeton University UNAL, Guillaume CERN VICHOU, Eirini University of Illinois at Urbana-Champaign VILASIS-CARDONA, Xavier La Salle - Universitat Ramon Llull VOLOBOUEV, Igor Texas Tech University VOLPI, Matteo The University of Melbourne WANG, Zhigang IHEP-Beijing, CAS WENZEL, Hans Fermilab WHITE, Andy University of Texas at Arlington WIGMANS, Richard Texas Tech University WINN, David Fairfield University WOODY, Craig Brookhaven National Lab YANG, Fan California Institute of Technology ZABI, Alexandre LLR-Ecole Polytechnique ZHANG, Liyuan California Institute of Technoogy ZHAO, Zhiwen University of Virginia ZHU, Kejun IHEP-Beijing, CAS ZHU, Ren-Yuan California Institute of Technology ZUTSHI, Vishnu Northern Illinois University

  4. INTRODUCTION Outline of Round Tables Outline of Round Tables

    NASA Astrophysics Data System (ADS)

    Abarzhi, Snezhana I.; Sreenivasan, Katepalli R.

    2010-12-01

    The Second International Conference and Advanced School 'Turbulent Mixing and Beyond', TMB-2009, was held at the Abdus Salam International Centre for Theoretical Physics, (ICTP), Trieste, Italy on 27 July-7 August 2009. TMB-2009 united over 180 participants ranging from students to members of the National Academies of Sciences and Engineering, and including researchers at experienced and early stages of their carriers from leading scientific institutions in academia, national laboratories, corporations and industry worldwide. Responding to the community's inquiry and reaffirming the practices established at TMB-2007, two Round Tables were organized for the participants of TMB-2009 on 30 July 2009 and 6 August 2009 in the Oppenheimer Room at the Centre. The goals of the Round Tables were to encourage the information exchange among the members of the interdisciplinary and international TMB community, promote discussions regarding the state-of-the-art in TMB-related scientific areas, identify directions for frontier research, and articulate recommendations for future developments. This article is a summary of the collective work of the Round Table participants (listed alphabetically below by their last names), whose contributions form its substance and, as such, are greatly appreciated. Abarzhi, Snezhana I (University of Chicago, USA) Andrews, Malcolm (Los Alamos National Laboratory, USA) Belotserkovskii, Oleg (Institute for Computer Aided Design of the Russian Academy of Sciences, Russia) Bershadskii, Alexander (ICAR, Israel) Brandenburg, Axel (Nordita, Denmark) Chumakov, Sergei (Stanford University, USA) Desai, Tara (University of Milano-Bicocca, Italy) Galperin, Boris (University of South Florida, USA) Gauthier, Serge (Commissariat à l'Energie Atomique, France) Gekelman, Walter (University of California at Los Angeles, USA) Gibson, Carl (University of California at San Diego, USA) Goddard III, William A (California Institute of Technology, USA) Grinstein, Fernando

  5. PREFACE: Fourth Meeting on Constrained Dynamics and Quantum Gravity

    NASA Astrophysics Data System (ADS)

    Cadoni, Mariano; Cavaglia, Marco; Nelson, Jeanette E.

    2006-04-01

    , France) Michael Mueller (Sardinien.com, Cagliari, Italy) Mario Nadalini (Università di Trento, Italy) José Navarro-Salas (Universidad de Valencia, Spain) Jeanette E. Nelson (Università di Torino, Italy) Alexander Nesterov (Universidad de Guadalajara, Mexico) Hermann Nicolai (Albert-Einstein-Institut, Golm, Germany) Daniele Oriti (DAMTP, University of Cambridge, UK) Marcello Ortaggio (Charles University, Prague, Czech Republic) Silvio Pallua (University of Zagreb, Croatia) Matej Pavsic (Jozef Stefan Institute, Ljubljana, Slovenia) Wlodzimierz Piechocki (Soltan Inst. for Nuclear Studies, Warsaw, Poland) Nicola Pinamonti (Università di Trento, Italy) J. Brian Pitts (University of Notre Dame, Indiana, USA) Vojtech Pravda (Academy of Sciences, Praha, Czech Rep.) Gianpaolo Procopio (DAMTP, University of Cambridge, UK) Alice Rogers (King's College London, UK) Efrain Rojas (Universidad Veracruzana, Mexico) James Ryan (DAMTP, University of Cambridge, UK) Augusto Sagnotti (Università di Roma Tor Vergata, Italy) Wenceslao Santiago-German (University of California at Davis, USA) Stefano Sciuto (Università di Torino, Italy) Domenico Seminara (Università di Firenze, Italy) Lorenzo Sindoni (Università di Udine, Italy) Kellogg S. Stelle (Imperial College, London, UK) Cosimo Stornaiolo (INFN, Sezione di Napoli, Italy) Ward Struyve (Perimeter Institute, Waterloo, Canada) Makoto Tanabe (Waseda University, Tokyo, Japan) Daniel Terno (Perimeter Institute, Waterloo, Canada) Charles Wang (Lancaster University, UK) Silke Weinfurtner (Victoria University, Wellington, New Zealand) Hans Westman (Perimeter Institute, Waterloo, Canada) Ruth Williams (DAMTP, University of Cambridge, UK) Tetsuyuki Yukawa (Graduate U. for Adv. Studies, Kanagawa, Japan) Jorge Zanelli (CECS, Santiago, Chile) Fourth Meeting on Constrained Dynamics and Quantum Gravity Conference photo

  6. Preface: Introductory Remarks: Linear Scaling Methods

    NASA Astrophysics Data System (ADS)

    Bowler, D. R.; Fattebert, J.-L.; Gillan, M. J.; Haynes, P. D.; Skylaris, C.-K.

    2008-07-01

    problems, there was another important theme: extending functionality. The search for greater accuracy has given an implementation of density functional designed to model van der Waals interactions accurately as well as local correlation, TDDFT and QMC and GW methods which, while not explicitly O(N), take advantage of localisation. All speakers at the workshop were invited to contribute to this issue, but not all were able to do this. Hence it is useful to give a complete list of the talks presented, with the names of the sessions; however, many talks fell within more than one area. This is an exciting time for linear scaling methods, which are already starting to contribute significantly to important scientific problems. Applications to nanostructures and biomolecules A DFT study on the structural stability of Ge 3D nanostructures on Si(001) using CONQUEST Tsuyoshi Miyazaki, D R Bowler, M J Gillan, T Otsuka and T Ohno Large scale electronic structure calculation theory and several applications Takeo Fujiwara and Takeo Hoshi ONETEP:Linear-scaling DFT with plane waves Chris-Kriton Skylaris, Peter D Haynes, Arash A Mostofi, Mike C Payne Maximally-localised Wannier functions as building blocks for large-scale electronic structure calculations Arash A Mostofi and Nicola Marzari A linear scaling three dimensional fragment method for ab initio calculations Lin-Wang Wang, Zhengji Zhao, Juan Meza Peta-scalable reactive Molecular dynamics simulation of mechanochemical processes Aiichiro Nakano, Rajiv K. Kalia, Ken-ichi Nomura, Fuyuki Shimojo and Priya Vashishta Recent developments and applications of the real-space multigrid (RMG) method Jerzy Bernholc, M Hodak, W Lu, and F Ribeiro Energy minimisation functionals and algorithms CONQUEST: A linear scaling DFT Code David R Bowler, Tsuyoshi Miyazaki, Antonio Torralba, Veronika Brazdova, Milica Todorovic, Takao Otsuka and Mike Gillan Kernel optimisation and the physical significance of optimised local orbitals in the ONETEP code Peter

  7. PREFACE: The IARU International Scientific Congress on Climate Change: Global Risks, Challenges and Decisions (10-12 March, Copenhagen, Denmark)

    NASA Astrophysics Data System (ADS)

    2009-01-01

    Visbeck Professor Mary Scholes Professor Masahide Kimoto Professor Matthew England Dr Maxwell Boykoff Dr Michael Raupach Professor Nathan Bindoff Professor Nicolas Gruber Professor Niels Elers Koch Professor Ole John Nielsen Professor Ole Wæver Professor Oran Young Dr Pamela Matson Dr Paul Baer Professor Paul Leadley Dr Pep Canadell Professor Pete Smith Professor Peter Gregory Professor Pier Vellinga Dr Rik Leemans Dr Roberto Bertollini Professor Roberto S Rodriguez Professor Scott Denning Dr Sivan Kartha Dr Thomas Downing Dr Tariq Banuri Professor Thomas Heyd Professor Tim Lenton Professor Timmons Roberts Professor Torkil Jønch Clausen Professor Warwick McKibbin Professor Wim C Turkenburg

  8. EDITORIAL: Announcing the 2007 Measurement Science and Technology Outstanding Paper Awards

    NASA Astrophysics Data System (ADS)

    Foss, John; Dewhurst, Richard; Fujii, Kenichi; Regtien, Paul

    2008-05-01

    Since 1991, Measurement Science and Technology has awarded a Best Paper prize. The Editorial Board of this journal believes that such a prize is an opportunity to thank authors for submitting their work, and serves as an integral part of the on-going quality review of the journal. The current breadth of topical areas that are covered by MST has made it advisable to expand the recognition of excellent publications. Hence, since 2005 the Editorial Board have presented 'Outstanding Paper Awards' in four subject categories: Fluid Mechanics; Measurement Science; Precision Measurements; and Sensors and Sensing Systems. 2007 Award Winners—Fluid Mechanics An adaptive sampling and windowing interrogation method in PIV R Theunissen, F Scarano and M L Riethmuller von Karman Institute for Fluid Dynamics, Chaussée de Waterloo 72, 1640 Sint-Genesius Rode, Belgium and Department of Aerospace Engineering, Delft University of Technology, Delft, PO Box 5058, 2600 GB Delft, The Netherlands The co-authored paper [1] has been selected as the Outstanding Paper in Fluid Mechanics for 2007. This paper provides a strategy whereby the placement and the size of the interrogation regions are adapted to the image signal strength (seeding density) and the spatial variations of the velocity magnitudes. Two, quite distinct, test cases demonstrate the efficacy of their method: a shockwave- boundary layer interaction and an aircraft vortex wake. The Selection Committee—Drs T Fansler, J Foss, I Marusic, S Morris, K Okamoto and M Wernet—selected this paper from a strongly competitive shortlist of four candidates. Their selection process was influenced by the perceived utility of the contribution to the numerous investigators who utilize PIV methods. 2007 Award Winners—Measurement Science Broadband single cell impedance spectroscopy using maximum length sequences: theoretical analysis and practical considerations Tao Sun, Shady Gawad, Catia Bernabini, Nicolas G Green and Hywel Morgan

  9. Measuring Cosmic Distances with Stellar Heart Beats

    NASA Astrophysics Data System (ADS)

    2004-10-01

    the cosmic distance scale now in use. Prospects with AMBER With 1.8m Auxiliary Telescopes soon to be ready on the VLTI platform, the astronomers will be able to observe many more Cepheids with a precision at least as good as the present high-precision VINCI observations of L Car. In addition, the future AMBER instrument will extend the VLTI capabilities toward shorter wavelengths (J and H bands), providing even higher spatial resolution than what is now possible with VINCI (K band). The combined effect of these two improvements will be to extend significantly the accessible sample of Cepheids. It is expected that the distances to more than 30 Cepheids will then be measurable with a precision better than 5%. This will provide a high precision calibration of both the reference point (down to ±0.01 mag) and the slope of the Galactic Cepheid Period-Luminosity. More information The information contained in this press release is based on a series of three research articles which are being published by the European research journal "Astronomy & Astrophysics" by P. Kervella and collaborators (Paper I : 2004, A&A, 416, 941, Paper II : 2004, A&A, 423, 327 and Paper III : in press). The present press release is published exactly three years after the first observations with two 8.2-m VLT Unit Telescopes and the VLTI with VINCI were achieved, cf. ESO PR 23/01. Note [1]: The team consists of Pierre Kervella and Vincent Coudé du Foresto at the Paris Observatory in France, David Bersier of the Space Telescope Science Institute (USA), Nicolas Nardetto and Denis Mourard (Observatoire de la Côte d'Azur, France), and Pascal Fouqué (Observatoire Midi-Pyré né es, France).

  10. The Virgo Cluster of Galaxies in the Making

    NASA Astrophysics Data System (ADS)

    2004-10-01

    ://www.zuv.unibas.ch/uni_media/2004/20041022virgo.html. [2]: The members of the team are Magda Arnaboldi (INAF, Osservatorio di Pino Torinese, Italy), Ortwin Gerhard (Astronomisches Institut, Universität Basel, Switzerland), Alfonso Aguerri (Instituto de Astrofisica de Canarias, Spain), Kenneth C. Freeman (Mount Stromlo Observatory, ACT, Australia), Nicola Napolitano (Kapteyn Astronomical Institute, The Netherlands), Sadanori Okamura (Dept. of Astronomy, University of Tokyo, Japan), and Naoki Yasuda (Institute for Cosmic Ray Research, University of Tokyo, Japan). [3]: Planetary nebulae are Sun-like stars in their final dying phase during which they eject their outer layers into surrounding space. At the same time, they unveil their small and hot stellar core which appears as a "white dwarf star". The ejected envelope is illuminated and heated by the stellar core and emits strongly in characteristic emission lines of several elements, notably oxygen (at wavelengths 495.9 and 500.7 nm). Their name stems from the fact that some of these nearby objects, such as the "Dumbbell Nebula" (see ESO PR Photo 38a/98) resemble the discs of the giant planets in the solar system when viewed with small telescopes. [4]: FLAMES, the Fibre Large Array Multi-Element Spectrograph, is installed at the 8.2-m VLT KUEYEN Unit Telescope. It is able to observe the spectra of a large number of individual, faint objects (or small sky areas) simultaneously and covers a sky field of no less than 25 arcmin in diameter, i.e., almost as large as the full Moon. It is the result of a collaboration between ESO, the Observatoire de Paris-Meudon, the Observatoire de Genève-Lausanne, and the Anglo Australian Observatory (AAO).

  11. EDITORIAL: Van der Waals interactions in advanced materials, in memory of David C Langreth Van der Waals interactions in advanced materials, in memory of David C Langreth

    NASA Astrophysics Data System (ADS)

    Hyldgaard, Per; Rahman, Talat S.

    2012-10-01

    : potential-energy curves for H2 molecules on Cu(111), (100) and (110) surfacesKyuho Lee, Kristian Berland, Mina Yoon, Stig Andersson, Elsebeth Schröder, Per Hyldgaard and Bengt I Lundqvist Ab initio and semi-empirical van der Waals study of graphene-boron nitride interaction from a molecular point of viewVasile Caciuc, Nicolae Atodiresei, Martin Callsen, Predrag Lazić and Stefan Blügel Rationale for switching to nonlocal functionals in density functional theoryP Lazić, N Atodiresei, V Caciuc, R Brako, B Gumhalter and S Blügel Improved description of soft layered materials with van der Waals density functional theoryGabriella Graziano, Jiří Klimeš, Felix Fernandez-Alonso and Angelos Michaelides Structure and stability of weakly chemisorbed ethene adsorbed on low-index Cu surfaces: performance of density functionals with van der Waals interactionsFelix Hanke, Matthew S Dyer, Jonas Björk and Mats Persson Are we van der Waals ready?T Björkman, A Gulans, A V Krasheninnikov and R M Nieminen Nonequilibrium thermodynamics of interacting tunneling transport: variational grand potential, density functional formulation and nature of steady-state forcesP Hyldgaard

  12. Macromolecular crowding: chemistry and physics meet biology (Ascona, Switzerland, 10-14 June 2012)

    NASA Astrophysics Data System (ADS)

    Foffi, G.; Pastore, A.; Piazza, F.; Temussi, P. A.

    2013-08-01

    modification of the well-known Smoluchowski approach to calculate the encounter rate of diffusion-limited reactions, he showed how more realistic situations accounting for crowding effects could be treated equally well on the same theoretical grounds. This talk marked an important point in the conference as it reinforced the idea that simple models of theoretical physics still have the power to provide inspiring results in spite of the intrinsic simplifications of such theoretical approaches. Along the same lines, Nicolas Dorsaz, from the University of Cambridge (UK), proposed an extension of the Smoluchowski framework that incorporates repulsive and attracting interactions between the reactants. This approach was illustrated by reaction rates obtained from event-driven Brownian dynamics and dynamical Monte Carlo simulations. Another striking example of the physical subtleties associated with modelling crowding effects was provided by Jeffrey Skolnick, from the Georgia Institute of Technology (USA). He examined the role of hydrodynamic interactions in the self-organization of biological assemblies in the presence of crowding. His results strongly suggest that hydrodynamic interactions greatly affect the kinetics of self-assembly reactions, so that including them in the picture appears crucial for understanding the dynamics of biological systems in vivo . Margareth Cheung, from the University of Houston (USA), emphasized that how the crowded environment inside a cell affects the structural conformation of a protein with a spherical shape is a vital question because the geometry of proteins and protein-protein complexes are far from globules in vivo . Her work demonstrates the malleability of 'native' proteins and implies that crowding-induced shape changes may be important for protein function and malfunction in vivo . Huan-Xiang Zhou, from the Florida State University (USA), focused on atomistic simulations of protein folding and binding under crowding conditions. His lab has

  13. Southern Fireworks above ESO Telescopes

    NASA Astrophysics Data System (ADS)

    1999-05-01

    - the PLANET observers turned their telescope and quickly obtained a series of CCD images in visual light of the sky region where the gamma-ray burst was detected, then shipped them off electronically to their Dutch colleagues [3]. Comparing the new photos with earlier ones in the digital sky archive, Vreeswijk, Galama and Rol almost immediately discovered a new, relatively bright visual source in the region of the gamma-ray burst, which they proposed as the optical counterpart of the burst, cf. their dedicated webpage at http://www.astro.uva.nl/~titus/grb990510/. The team then placed a message on the international Gamma-Ray Burster web-noteboard ( GCN Circular 310), thereby alerting their colleagues all over the world. One hour later, the narrow-field instruments on BeppoSax identified a new X-Ray source at the same location ( GCN Circular 311), thus confirming the optical identification. All in all, a remarkable synergy of human and satellite resources! Observations of GRB 990510 at ESO Vreeswijk, Galama and Rol, in collaboration with Nicola Masetti, Eliana Palazzi and Elena Pian of the BeppoSAX GRB optical follow-up team (led by Filippo Frontera ) and the Huntsville optical follow-up team (led by Chryssa Kouveliotou ), also contacted the European Southern Observatory (ESO). Astronomers at this Organization's observatories in Chile were quick to exploit this opportunity and crucial data were soon obtained with several of the main telescopes at La Silla and Paranal, less than 14 hours after the first detection of this event by the satellite. ESO PR Photo 22a/99 ESO PR Photo 22a/99 [Preview - JPEG: 211 x 400 pix - 72k] [Normal - JPEG: 422 x 800 pix - 212k] [High-Res - JPEG: 1582 x 3000 pix - 2.6M] ESO PR Photo 22b/99 ESO PR Photo 22b/99 [Preview - JPEG: 400 x 437 pix - 297k] [Normal - JPEG: 800 x 873 pix - 1.1M] [High-Res - JPEG: 2300 x 2509 pix - 5.9M] Caption to PR Photo 22a/99 : This wide-field photo was obtained with the Wide-Field Imager (WFI) at the MPG/ESO 2.2-m

  14. Macromolecular crowding: chemistry and physics meet biology (Ascona, Switzerland, 10-14 June 2012).

    PubMed

    Foffi, G; Pastore, A; Piazza, F; Temussi, P A

    2013-08-02

    from a modification of the well-known Smoluchowski approach to calculate the encounter rate of diffusion-limited reactions, he showed how more realistic situations accounting for crowding effects could be treated equally well on the same theoretical grounds. This talk marked an important point in the conference as it reinforced the idea that simple models of theoretical physics still have the power to provide inspiring results in spite of the intrinsic simplifications of such theoretical approaches. Along the same lines, Nicolas Dorsaz, from the University of Cambridge (UK), proposed an extension of the Smoluchowski framework that incorporates repulsive and attracting interactions between the reactants. This approach was illustrated by reaction rates obtained from event-driven Brownian dynamics and dynamical Monte Carlo simulations. Another striking example of the physical subtleties associated with modelling crowding effects was provided by Jeffrey Skolnick, from the Georgia Institute of Technology (USA). He examined the role of hydrodynamic interactions in the self-organization of biological assemblies in the presence of crowding. His results strongly suggest that hydrodynamic interactions greatly affect the kinetics of self-assembly reactions, so that including them in the picture appears crucial for understanding the dynamics of biological systems in vivo . Margareth Cheung, from the University of Houston (USA), emphasized that how the crowded environment inside a cell affects the structural conformation of a protein with a spherical shape is a vital question because the geometry of proteins and protein-protein complexes are far from globules in vivo . Her work demonstrates the malleability of 'native' proteins and implies that crowding-induced shape changes may be important for protein function and malfunction in vivo . Huan-Xiang Zhou, from the Florida State University (USA), focused on atomistic simulations of protein folding and binding under crowding

  15. The Most Remote Gamma-Ray Burst

    NASA Astrophysics Data System (ADS)

    2000-10-01

    , Denmark), Johan Fynbo, Palle Møller (European Southern Observatory), Richard Marc Kippen (University of Alabama in Huntsville and NASA/Marshall Space Flight Center, USA), Bjarne Thomsen (University of Århus, Denmark), Marianne Vestergaard (Ohio State University, USA), Nicola Masetti, Eliana Palazzi (Instituto Tecnologie e Studio Radiazoni Extraterresti, Bologna, Italy) Kevin Hurley (University of California, Berkeley, USA), Thomas Cline (NASA Goddard Space Flight Center, Greenbelt, USA), Lex Kaper (Sterrenkundig Instituut ``Anton Pannekoek", the Netherlands) and Andreas O. Jaunsen (formerly University of Oslo, Norway; now ESO-Paranal). [2]: Detailed reports about the early observations of this gamma-ray burst are available at the dedicated webpage within the GRB Coordinates Network website. [3]: The photometric redshift method makes it possible to judge the distance to a remote celestial object (a galaxy, a quasar, a gamma-ray burst afterglow) from its measured colours. It is based on the proportionality between the distance and the velocity along the line of sight (Hubble's law) that reflects the expansion of the Universe. The larger the distance of an object is, the larger is its velocity and, due to the Doppler effect, the spectral shift of its emission towards longer (redder) wavelengths. Thus, the measured colour provides a rough indication of the distance. Examples of this method are shown in ESO PR 20/98 (Photos 48a/00 and 48e/00). [4]: In fact, the object was so faint that the positioning of the spectrograph slit had to be done in "blind" offset, i.e. without actually seeing the object on the slit during the observation. This very difficult observational feat was possible because of excellent preparations by the team of astronomers and the very good precision of the telescope and instrument. [5]: The " Lyman-alpha forest" refers to the crowding of absorption lines from intervening hydrogen clouds, shortward of the strong Lyman-alpha spectral line at rest