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Sample records for approx50 kyr revising

  1. Climate, vegetation and lake development at Sokli (northern Finland) during early MIS 3 at approx50 kyr: Revising earlier concepts on climate, glacial and vegetation dynamics in Fennoscandia during the Weichselian

    Energy Technology Data Exchange (ETDEWEB)

    Helmens, Karin F. (Dept. of Physical Geography and Quaternary Geology, Stockholm Univ., Stockholm (Sweden))

    2009-08-15

    Long sediment records that register environmental changes in formerly glaciated regions such as Fennoscandia in the period preceding the Last Glacial Maximum (LGM) at approx 20 kyr are rare. The Weichselian history of Fennoscandia is based on the long-distance correlation of poorly dated stratigraphic fragmentary evidence and studies on glacial geomorphology. Environmental conditions during ice-free intervals have been mostly reconstructed based on low resolution palynological analysis only. Here we present the results of a detailed study of a for Fennoscandia unusually long and continuous sediment sequence that has been recovered from the Sokli basin in northern Finland. The Sokli sequence consists of tills, glacio-fluvial beds, and fluvial beds, interlayered with fossil-rich lacustrine sediments that according to multiple accelerator mass spectrometer (AMS) 14C and optically stimulated luminescence (OSL) datings extend from the present into the Penultimate Glacial representing the last approx130 kyr. This report focuses on the youngest Weichselian interstadial interval with ice-free conditions at Sokli dated to approx50 kyr in the early part of Marine Isotope Stage (MIS) 3. A comprehensive environmental reconstruction is made based on multi-proxy analysis on a two meter thick laminated, lacustrine clay-silt sequence, including lithological characteristics; organic content (loss-on-ignition, LOI); plant microfossils (pollen, spores, algal and fungal remains); macrofossils of plants (e.g. seeds, moss remains) and of aquatic animals (e.g. statoblasts of Bryozoa); head-capsules of chironomids (i.e. aquatic insects); and diatoms and other siliceous microfossils (e.g. phytolits, chrysophyte stomatocysts). Additionally, geomorphic evidence and analysis of Digital Elevation Model (DEM) data are employed in the environmental reconstruction. Mean July temperatures are reconstructed by applying transfer functions to the pollen, chironomid and diatom records. The results

  2. Climate, vegetation and lake development at Sokli (northern Finland) during early MIS 3 at approx50 kyr: Revising earlier concepts on climate, glacial and vegetation dynamics in Fennoscandia during the Weichselian

    Energy Technology Data Exchange (ETDEWEB)

    Helmens, Karin F. (Dept. of Physical Geography and Quaternary Geology, Stockholm Univ., Stockholm (Sweden))

    2009-08-15

    Long sediment records that register environmental changes in formerly glaciated regions such as Fennoscandia in the period preceding the Last Glacial Maximum (LGM) at approx 20 kyr are rare. The Weichselian history of Fennoscandia is based on the long-distance correlation of poorly dated stratigraphic fragmentary evidence and studies on glacial geomorphology. Environmental conditions during ice-free intervals have been mostly reconstructed based on low resolution palynological analysis only. Here we present the results of a detailed study of a for Fennoscandia unusually long and continuous sediment sequence that has been recovered from the Sokli basin in northern Finland. The Sokli sequence consists of tills, glacio-fluvial beds, and fluvial beds, interlayered with fossil-rich lacustrine sediments that according to multiple accelerator mass spectrometer (AMS) 14C and optically stimulated luminescence (OSL) datings extend from the present into the Penultimate Glacial representing the last approx130 kyr. This report focuses on the youngest Weichselian interstadial interval with ice-free conditions at Sokli dated to approx50 kyr in the early part of Marine Isotope Stage (MIS) 3. A comprehensive environmental reconstruction is made based on multi-proxy analysis on a two meter thick laminated, lacustrine clay-silt sequence, including lithological characteristics; organic content (loss-on-ignition, LOI); plant microfossils (pollen, spores, algal and fungal remains); macrofossils of plants (e.g. seeds, moss remains) and of aquatic animals (e.g. statoblasts of Bryozoa); head-capsules of chironomids (i.e. aquatic insects); and diatoms and other siliceous microfossils (e.g. phytolits, chrysophyte stomatocysts). Additionally, geomorphic evidence and analysis of Digital Elevation Model (DEM) data are employed in the environmental reconstruction. Mean July temperatures are reconstructed by applying transfer functions to the pollen, chironomid and diatom records. The results

  3. Climate, vegetation and lake development at Sokli (northern Finland) during early MIS 3 at ∼50 kyr: Revising earlier concepts on climate, glacial and vegetation dynamics in Fennoscandia during the Weichselian

    International Nuclear Information System (INIS)

    Long sediment records that register environmental changes in formerly glaciated regions such as Fennoscandia in the period preceding the Last Glacial Maximum (LGM) at ∼ 20 kyr are rare. The Weichselian history of Fennoscandia is based on the long-distance correlation of poorly dated stratigraphic fragmentary evidence and studies on glacial geomorphology. Environmental conditions during ice-free intervals have been mostly reconstructed based on low resolution palynological analysis only. Here we present the results of a detailed study of a for Fennoscandia unusually long and continuous sediment sequence that has been recovered from the Sokli basin in northern Finland. The Sokli sequence consists of tills, glacio-fluvial beds, and fluvial beds, interlayered with fossil-rich lacustrine sediments that according to multiple accelerator mass spectrometer (AMS) 14C and optically stimulated luminescence (OSL) datings extend from the present into the Penultimate Glacial representing the last ∼130 kyr. This report focuses on the youngest Weichselian interstadial interval with ice-free conditions at Sokli dated to ∼50 kyr in the early part of Marine Isotope Stage (MIS) 3. A comprehensive environmental reconstruction is made based on multi-proxy analysis on a two meter thick laminated, lacustrine clay-silt sequence, including lithological characteristics; organic content (loss-on-ignition, LOI); plant microfossils (pollen, spores, algal and fungal remains); macrofossils of plants (e.g. seeds, moss remains) and of aquatic animals (e.g. statoblasts of Bryozoa); head-capsules of chironomids (i.e. aquatic insects); and diatoms and other siliceous microfossils (e.g. phytolits, chrysophyte stomatocysts). Additionally, geomorphic evidence and analysis of Digital Elevation Model (DEM) data are employed in the environmental reconstruction. Mean July temperatures are reconstructed by applying transfer functions to the pollen, chironomid and diatom records. The results have been

  4. The Sima de los Huesos hominids date to beyond U/Th equilibrium (>350 kyr) and perhaps to 400-500 kyr: New radiometric dates

    Science.gov (United States)

    Bischoff, J.L.; Shamp, D.D.; Aramburu, Arantza; Arsuaga, J.L.; Carbonell, E.; Bermudez de Castro, Jose Maria

    2003-01-01

    The Sima de los Huesos site of the Atapuerca complex near Burgos, Spain contains the skeletal remains of at least 28 individuals in a mud breccia underlying an accumulation of the Middle Pleistocene cave bear (U. deningeri). Earlier dating estimates of 200 to 320 kyr were based on U-series and ESR methods applied to bones, made inaccurate by unquantifiable uranium cycling. We report here on a new discovery within the Sima de los Huesos of human bones stratigraphically underlying an in situ speleothem. U-series analyses of the speleothem shows the lower part to be at isotopic U/Th equilibrium, translating to a firm lower limit of 350 kyr for the SH hominids. Finite dates on the upper part suggest a speleothem growth rate of c. 1 cm/32 kyr. This rate, along with paleontological constraints, place the likely age of the hominids in the interval of 400 to 600 kyr. ?? 2002 Elsevier Science Ltd. All rights reserved.

  5. Frequency variations of the earth's obliquity and the 100-kyr ice-age cycles

    Science.gov (United States)

    Liu, Han-Shou

    1992-01-01

    Changes in the earth's climate are induced by variations in the earth's orbital parameters which modulate the seasonal distribution of solar radiation. Periodicities in the geological climate record with cycles of 100, 41, and 23 kyr have been linked with changes in obliquity, eccentricity, and precession of the equinoxes. The effect of variations of eccentricity during a 100 kyr period is weak relative to the signals from obliquity and precession variations and it may therefore be expected that the 100 kyr signal in the climate record would be of low intensity. However, this signal dominates the climate record and internal nonlinear processes within the climate system have previously been proposed to account for this fact. The author shows that variations in the frequency of the obliquity cycle can give rise to strong 100-kyr forcing of climate.

  6. The role of orbital forcing, carbon dioxide and regolith in 100 kyr glacial cycles

    Directory of Open Access Journals (Sweden)

    A. Ganopolski

    2011-12-01

    Full Text Available The origin of the 100 kyr cyclicity, which dominates ice volume variations and other climate records over the past million years, remains debatable. Here, using a comprehensive Earth system model of intermediate complexity, we demonstrate that both strong 100 kyr periodicity in the ice volume variations and the timing of glacial terminations during past 800 kyr can be successfully simulated as direct, strongly nonlinear responses of the climate-cryosphere system to orbital forcing alone, if the atmospheric CO2 concentration stays below its typical interglacial value. The existence of long glacial cycles is primarily attributed to the North American ice sheet and requires the presence of a large continental area with exposed rocks. We show that the sharp, 100 kyr peak in the power spectrum of ice volume results from the long glacial cycles being synchronized with the Earth's orbital eccentricity. Although 100 kyr cyclicity can be simulated with a constant CO2 concentration, temporal variability in the CO2 concentration plays an important role in the amplification of the 100 kyr cycles.

  7. High temporal Resolution Fire History in Eastern Africa: the Last 16 kyr cal. BP

    Science.gov (United States)

    Vanniere, B.; Carcaillet, C.; Garcin, Y.; Vullien, A.; Williamson, D.

    2004-12-01

    Charcoal series, based on a high temporal resolution analysis, at Lake Massoko (9°20' S, 33° 45' E, 770 a.s.l., SW Tanzania) reveals numerous changes of fire regime over the last 16 kyr cal BP. Data are based on the tallying of charcoal from 700 continuous 1 cm thick samples along a 7m long sequence. The structure of charcoal particles is well preserved with an length:width ratio superior to 5; this appears to testify to the local provenance of the material studied and to the rapid transport of particles to the lake. The majority of particles belongs to herbaceous cuticles produced by savanna or bush fires. Time control is supported by 14 radiocarbon dates. Mean time resolution per sample of 17 yr provides the first long detailed biomass burning record in Africa. This record evidences frequent fires events during the last 16 kyr, indicating that fire is a key component of east African ecosystems since, at least, the last glacial stage up to present. From 16 to 12 kyr cal BP, the charcoal influx into the lake is low except during two specific sequences, between 13.5-12.5 kyr cal BP and 14.5-14 kyr cal BP. These may correspond to more arid or more biomass-available phases. Around 10 kyr cal BP, at the early Holocene a greater influx of charcoal is recorded in the lake, probably as a result of a high fire regime likely triggered by severe droughts. Between 8.3 and 1.7 kyr cal BP, the charcoal influx displays a cyclic fire history of ca. 500 yr. Low fire regime, between 3.5-2.5, 5.5-5 and 7.5-7 kyr cal BP, correspond to wetter periods. About 12 sequences of fire increase and decrease are highlighted, which appears to support a high climatic variability during the middle-Holocene. After 1.7 kyr BP, there is a long lasting increase of charcoal influx into the lake, as observed by black carbon analysis (Thevenon et al., 2003). This particular period, without analog since 16 kyr cal BP, is consistent with the development of Iron Age settlements in the region, slash

  8. Climatic forcing before, during, and after the 8.2 Kyr B.P. global cooling event

    Indian Academy of Sciences (India)

    Devendra Lal; William G Large; Stephan G Walker

    2007-06-01

    This paper attempts at full characterization of the unique global 8.2Kyr B.P. cooling event. Significant atmospheric cooling started during 9.5–8.5Kyr B.P. when the Sun was extremely quiet during three periods of ∼50–100 years. The flood of melt water in the N. Atlantic from glacial lakes during the demise of the Laurentide ice sheet, starting at ∼8.5Kyr B.P., adds to the atmospheric cooling. Climatic forcing events occurred at 8.5Kyr B.P., at 8.2Kyr B.P. and finally at 8.06Kyr B.P., leading to concurrent increases or decreases in the atmospheric 14C levels, completely consistent with the climatic forcing proposed here.

  9. A 640 kyr geomagnetic and palaeoclimatic record from Lake Baikal sediments

    Science.gov (United States)

    Kravchinsky, Vadim A.; Evans, Michael E.; Peck, John A.; Sakai, Hideo; Krainov, Mikhail A.; King, John W.; Kuzmin, Mikhail I.

    2007-07-01

    Magnetic remanence vectors for 1737 samples from two ~100 m cores of Lake Baikal sediments are reported along with complete magnetic susceptibility profiles obtained from a pass-through system. Chronological control is established by means of two independent correlations; first, by matching susceptibility variations to the oceanic oxygen isotope record and second, by matching the relative palaeointensity variations to the SINT-800 global reference curve. These both imply an average deposition rate of 15 cm kyr-1 and a basal age of ~640 ka. Spectral analysis reveals the presence of Milankovitch signals at ~100 kyr (eccentricity), ~41 kyr (obliquity) and ~23 and ~19 kyr (precession). Stable remanence vectors are almost all of normal polarity. The few exceptions comprise brief intervals of low and/or negative inclinations which probably represent geomagnetic excursions. However, these are far less numerous than the high sedimentation rate would lead one to expect. Furthermore, only four of them can be readily matched to the-still poorly understood-global pattern. These are the Laschamp, the Albuquerque, the Iceland Basin and perhaps the West Eifel excursions which occurred at ~38 000, ~146 000, at 180 000-190 000 and at 480 000-495 000 yr ago, respectively.

  10. A distal 140 kyr sediment record of Nile discharge and East African monsoon variability

    Science.gov (United States)

    Ehrmann, Werner; Schmiedl, Gerhard; Seidel, Martin; Krüger, Stefan; Schulz, Hartmut

    2016-03-01

    Clay mineral assemblages in a sediment core from the distal Nile discharge plume off Israel have been used to reconstruct the late Quaternary Nile sediment discharge into the eastern Mediterranean Sea (EMS). The record spans the last ca. 140 kyr. Smectite abundances indicate the influence of the Blue Nile and the Atbara River that have their headwaters in the volcanic rocks of the Ethiopian Highlands. Kaolinite abundances indicate the influence of wadis, which contribute periodically to the suspension load of the Nile. Due to the geographical position, the climate and the sedimentary framework of the EMS is controlled by two climate systems. The long-term climate regime was governed by the African monsoon that caused major African humid periods (AHPs) with enhanced sediment discharge at 132 to AHP 5), 116 to 99 (AHP4), and 89 to 77 ka (AHP3). They lasted much longer than the formation of the related sapropel layers S5 (> 2 kyr), S4 (3.5 kyr), and S3 (5 kyr). During the last glacial period (Marine Isotope Stages (MISs) 4-2), the long-term changes in the monsoonal system were superimposed by millennial-scale changes in an intensified midlatitude glacial system. This climate regime caused short but pronounced drought periods in the Nile catchment, which are linked to Heinrich events and alternate with more humid interstadials. The clay mineral record further implies that feedback mechanisms between vegetation cover and sediment discharge of the Nile are detectable but of minor importance for the sedimentary record in the southeastern Mediterranean Sea during the investigated African humid periods.

  11. South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event

    OpenAIRE

    Ljung, K.; Björck, S.; Renssen, H.; D. Hammarlund

    2007-01-01

    International audience One of the most distinct climate fluctuations during the Holocene is the short and rapid event centred around 8200 years ago, the 8.2 kyr event, which was most likely triggered by glacial melt-water forcing from the receding Laurentide ice-sheet. Evidence for this cooling has primarily been reported from sites around the North Atlantic, but an increasing number of observations imply a more wide-spread occurrence. Palaeoclimate archives from the Southern Hemisphere ha...

  12. South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event

    Directory of Open Access Journals (Sweden)

    K. Ljung

    2007-05-01

    Full Text Available One of the most distinct climate fluctuations during the Holocene is the short and rapid event centred around 8200 years ago, the 8.2 kyr event, which was most likely triggered by glacial melt-water forcing from the receding Laurentide ice-sheet. Evidence for this cooling has primarily been reported from sites around the North Atlantic, but an increasing number of observations imply a more wide-spread occurrence. Palaeoclimate archives from the Southern Hemisphere have hitherto failed to uncover a distinct climatic anomaly associated with the 8.2 kyr event. Here we present a lake sediment record from Nightingale Island in the central South Atlantic showing enhanced precipitation between 8275 and 8025 cal. yrs BP, most likely as a consequence of increased sea surface temperature (SST. We show that this is consistent with climate model projections of a warming of the South Atlantic in response to reduced north-ward energy transport during the 8.2 kyr event.

  13. South Atlantic island record reveals a South Atlantic response to the 8.2 kyr event

    Directory of Open Access Journals (Sweden)

    K. Ljung

    2008-02-01

    Full Text Available One of the most distinct climate fluctuations during the Holocene is the short and rapid event centred around 8200 years ago, the 8.2 kyr event, which was most likely triggered by glacial melt-water forcing from the receding Laurentide ice-sheet. Evidence for this cooling has primarily been reported from sites around the North Atlantic, but an increasing number of observations imply a more wide-spread occurrence. Palaeoclimate archives from the Southern Hemisphere have hitherto failed to uncover a distinct climatic anomaly associated with the 8.2 kyr event. Here we present a lake sediment record from Nightingale Island in the central South Atlantic showing enhanced precipitation between 8275 and 8025 cal. yrs BP, most likely as a consequence of increased sea surface temperature (SST. We show that this is consistent with climate model projections of a warming of the South Atlantic in response to reduced north-ward energy transport during the 8.2 kyr event.

  14. Causal links between Nile floods and eastern Mediterranean sapropel formation during the past 125 kyr confirmed by OSL and radiocarbon dating of Blue and White Nile sediments

    Science.gov (United States)

    Williams, M. A. J.; Duller, G. A. T.; Williams, F. M.; Woodward, J. C.; Macklin, M. G.; El Tom, O. A. M.; Munro, R. N.; El Hajaz, Y.; Barrows, T. T.

    2015-12-01

    It has long been hypothesised that beds of highly organic mud or sapropels seen in marine sediment cores retrieved from the floor of the eastern Mediterranean accumulated during times of high Nile fluvial discharge. Our recent fieldwork in the valleys of the Blue Nile, the White Nile and the main Nile has for the first time revealed a sequence of extreme flood episodes synchronous with sapropel units S5 (124 kyr), S4 (102 kyr), S3 (81 kyr), S2 (55 kyr) and S1 (13.5-6.5 kyr). There are more weakly defined links with Nile floods and sapropel units S9 (240 kyr), S8 (217 kyr), S7 (195 kyr), S6 (172 kyr), but the dating error terms are too large to allow us to be too definite. During times of extreme floods over the past 125 kyr, wide distributary channels of the Blue Nile flowed across the Gezira alluvial fan in central Sudan and transported a bed load of sand and gravel into the lower White Nile valley. The sands were reworked by wind to form source-bordering dunes, all of which contain heavy minerals of Ethiopian provenance. These source-bordering dunes were active at 115-105 kyr, 60 kyr and 12-7 kyr, all times of extreme Blue Nile floods. The flood and dune sediments were dated using a combination of optically stimulated luminescence (OSL) and radiocarbon analyses. The Quaternary record of Nile floods discussed here shows a precessional signal and reflects episodes of stronger summer monsoon and more northerly seasonal movement of the ITCZ, linked to times of higher insolation in northern tropical latitudes. Progressive aggradation of Holocene Nile channels in northern Sudan has had a profound influence upon human settlement in the last 8 kyr.

  15. Revising Translations

    DEFF Research Database (Denmark)

    Rasmussen, Kirsten Wølch; Schjoldager, Anne

    2011-01-01

    The paper explains the theoretical background and findings of an empirical study of revision policies, using Denmark as a case in point. After an overview of important definitions, types and parameters, the paper explains the methods and data gathered from a questionnaire survey and an interview...... survey. Results clearly show that most translation companies regard both unilingual and comparative revisions as essential components of professional quality assurance. Data indicate that revision is rarely fully comparative, as the preferred procedure seems to be a unilingual revision followed by a more...... or less comparative rereading. Though questionnaire data seem to indicate that translation companies use linguistic correctness and presentation as the only revision parameters, interview data reveal that textual and communicative aspects are also considered. Generally speaking, revision is not carried...

  16. Cosmogenic 10Be and Paleoaccumulation Rates at WAIS Divide from 12-19 kyr BP

    Science.gov (United States)

    Welten, K. C.; Woodruff, T. E.; Caffee, M. W.

    2012-12-01

    Concentrations of cosmogenic 10Be in polar ice samples are affected by variations in solar activity, geomagnetic field strength, atmospheric mixing and annual snow accumulation rates. We are presently engaged in a study to obtain a continuous 10Be record in a deep ice core (WDC06A) that was drilled at the West Antarctic Ice Sheet (WAIS) Divide, a site with an average snow accumulation rate of ~20 cm weq/yr, similar to the GISP2 site in Greenland. We previously reported 10Be in annual layers in the top 114 m of WDC06A (Woodruff et al. 2011) and 10Be and 36Cl at decadal resolution in the top 560 m (Welten et al. 2009), and are now measuring 10Be in samples from a depth of 1800-2500 m, corresponding to preliminary ages of 10-20 kyr BP. We separated 10Be from ice samples of 300-600 g, following procedures described previously (Finkel and Nishiizumi 1997) and measured 10Be concentrations by accelerator mass spectrometry at PRIME lab. So far, we measured 10Be in 50 ice samples with ages between 12.3-13.9 kyr BP, at a resolution of ~30 yr/sample, and 50 samples from 15.6-19.0 kyr BP at an average resolution of ~70 yr/sample. The 10Be depth profile shows a relative constant value of (28 ± 3) x 10^3 atoms/g for samples younger than 18 kyr BP and a value of (41 ± 3) x 10^3 atoms/g for ice from 18.2-19.0 kyr BP. These values are 50-120% higher than the average concentration of 18.4 x 10^3 atoms/g for WAIS Divide ice samples from the last 420 year of snow accumulation. Although the higher 10Be concentrations in ice from the last glacial stage can be partly attributed to a 10-20% lower geomagnetic field strength (and thus a higher global 10Be production rate), they are mainly due to lower snow accumulation rates during the last glacial stage. After applying corrections for changes in geomagnetic field strength based on the SINT-800 record, we derive average snow accumulation rates of 13-15 cm weq/yr for the age interval of 12-18 kyr BP and of ~10 cm weq/yr for 18.2-19.0 kyr

  17. The 6 and 130 kyr BP climates as simulated by an updated version of LOVECLIM1.2

    Science.gov (United States)

    Loutre, M.-F.; Fichefet, T.; Goosse, H.; Barriat, P.-Y.; Sallaz-Damaz, Y.; Timmermann, A.; Laurian, A.; Barthélemy, A.

    2012-04-01

    New modules are included in LOVECLIM1.2 (Goosse et al, 2010). First, a modified atmospheric balance equation is implemented. It links the computed changes of the atmospheric streamfunction with the geopotential height at each level (ABEL) by representing the effect of divergent winds on the streamfunction (Timmermann, 2011, personnal communication). Second, a parameterisation of katabatic winds is implemented (KATA). Their impact on the Antarctic sea ice is represented through constant corrections applied to the ice transport in the vicinity of the coast (Barthelemy, 2011). Third, an empirical diagnostic cloud scheme, based on the ERA-40 reanalysis data (Uppala et al., 2005), is introduced in LOVECLIM to address cloud feedbacks (Timmermann, 2011, personnal communication) (CLOU). This modified version of LOVECLIM has been tested under pre-industrial, mid-holocene (6 kyr BP) and last interglacial (130 kyr BP) forcing conditions. Two setups were used and compared to LOVECLIM1.2, i.e. AK01, which includes both ABEL and KATA, and AK02, which also includes CLOU. First, AK01 and AK02 simulated climates are compared to the LOVECLIM1.2 one. Both AK01 and AK02 induce a global annual mean cooling of 0.4C for the pre-industrial period, and of 0.3C at 6 kyr and at 130 kyr BP. In summer (JJAS) the cooling is mostly located over continents and tropical areas. There is also a strong cooling off Antarctica in the Weddell Sea, while the Pacific sector of the Southern Ocean experiences a warming. In both cases (AK01 and AK02), summer precipitation is reduced in equatorial regions (mostly over the Indian and Pacific Oceans) and enhanced in tropical regions, especially over North Africa. Second, the simulated Holocene (6 kyr BP) and pre-industrial (present) climate are compared. On global annual mean, the surface temperature is 0.3C higher at 6 kyr BP than at present. The warming in summer (JJAS) is the largest in the high northern latitudes, especially over Greenland and North America

  18. Constraint on the penultimate glacial maximum Northern Hemisphere ice topography (≈140 kyrs BP)

    Science.gov (United States)

    Colleoni, Florence; Wekerle, Claudia; Näslund, Jens-Ove; Brandefelt, Jenny; Masina, Simona

    2016-04-01

    The penultimate glacial maximum (PGM, ≈140 kyrs BP), is known to be the most extensive glaciation on record that occurred during the last 400 kyrs over Eurasia. We used a coupled Atmosphere-Ocean-Sea-Ice-Land model to simulate the climate of the PGM accounting for a reconstruction of the large PGM Eurasian ice sheet. Due to uncertainties in the PGM Laurentide ice-sheet topography, two simulations with different ice-sheet topographies over North America (large as for the Last Glacial Maximum, LGM and small as for 13 kyrs BP) are performed. Results show that the simulated PGM glacial maximum climates are of comparable magnitude with previous simulations of the LGM in both cases. Assuming a small Laurentide ice-sheet instead of the LGM one in our PGM simulations results in a shift in the planetary waves. This causes an increase in storm track activity over the North Atlantic as well as higher temperatures and precipitation rates over North America, North Atlantic and over the Eurasian ice sheet. In addition, it induces a negative temperature anomaly over East Siberia yielding a thick snow cover, which seems to be in agreement with data from recent Arctic campaigns suggesting that an ice cap developed over Beringia during the PGM. All together, the changes in large-scale circulation and regional climate simulated using a small Laurentide ice sheet match the proxies well. Based on our findings, we suggest that the Laurentide ice sheet might have been smaller during the PGM than during the LGM, in turn also implying a larger Eurasian ice sheet than during the LGM, which is supported by various geological evidence of the PGM.

  19. Effect of isostatic rebound on modelled ice volume variations during the last 200 kyr

    OpenAIRE

    M. Crucifix; Loutre, M. F.; Lambeck, K.; Berger, A.

    2001-01-01

    Deformation of the lithosphere under an ice load can be approximated using the hypothesis of local damped isostasy. This simple formulation has been systematically compared with a three-dimensional model of the crust-mantle system for simple ice-load scenarios with a period in the range 20-100 kyr. The comparison enables us to introduce the concepts of effective upper mantle density and effective relaxation time into the isostatic model for the response of the Earth to the ice sheets. These p...

  20. South Asian monsoon variability during the past 800 kyr revealed by rock magnetic proxies

    Science.gov (United States)

    Suganuma, Y.; Yamazaki, T.; Kanamatsu, T.

    2009-05-01

    A rock magnetic investigation was carried out on a sedimentary core taken from the distal portion of the Bengal Fan in order to reconstruct the South Asian monsoon variability during the past 800 kyr. The 10.2 m long piston core MR0503-PC3, recovered at a water depth of 4400 m, consists of clay to silty clay with minor amounts of nannofossils. An age model for the MR0503-PC3 core is established by correlating a relative paleointensity record of the core [Suganuma Y., Yamazaki, T., Kanamatsu, T., Hokanishi, N., 2008. Relative paleointensity record during the last 800 kyr from the equatorial Indian Ocean: implication for relationship between inclination and intensity variations. Geochemistry, Geophysics, Geosystems. 9, Q02011. doi:10.1029/2007GC001723.] to the global paleointensity stack "Sint-800" [Guyodo, Y., Valet, J.P., 1999. Global changes in intensity of the Earth's magnetic field during the past 800 kyr. Nature. 399, 249-252.]. The age model is consistent with the published ages of tephra layers intercalated in the core, and shows continuous sedimentation during the past 800 kyr. Temporal variations in rock magnetic proxies for the magnetic concentration (ARM, IRM, and HIRM), the grain size (Mrs/Ms), and the composition (S -0.3T and S -0.1T) show that the amount of fine-grained magnetite increased during interglacial stages, and then gradually decreased toward the following glacial maxima. This indicates that the supply of fine-grained magnetite probably originated from areal expansion and/or increased pedogenic activity in the Ganges and Brahmaputra Rivers catchment. Increases during warmer periods suggest intensification of the South Asian summer monsoon during interglacial stages. During marine isotope stages (MIS) 15-11, enhancement of fine-grained magnetite and increased hematite and maghemite contributions are observed. These suggest a significant intensification of the South Asian summer monsoon during this period. Our record and other paleoclimatic

  1. Marine04 marine radiocarbon age calibration, 0-26 cal kyr BP

    OpenAIRE

    Hughen, Konrad A.; Baillie, Mike G.L.; Bard, Edouard; Beck, J. Warren; Bertrand, Chanda J.H.; Blackwell, Paul G.; Caitlin E. Buck; Burr, George S; Cutler, Kirsten B.; Damon, Paul E.; Edwards, Richard L.; Fairbanks, Richard G.; Friedrich, Michael; Guilderson, Thomas P; Kromer, Bernd

    2004-01-01

    New radiocarbon calibration curves, IntCal04 and Marine04, have been constructed and internationally ratified to replace the terrestrial and marine components of IntCal98. The new calibration data sets extend an additional 2000 yr, from 0–26 cal kyr BP (Before Present, 0 cal BP = AD 1950), and provide much higher resolution, greater precision, and more detailed structure than IntCal98. For the Marine04 curve, dendrochronologically-dated tree-ring samples, converted with a box diffusion model ...

  2. Impact of an 8.2-kyr-like event on methane emissions in northern peatlands

    Directory of Open Access Journals (Sweden)

    S. Zürcher

    2012-09-01

    Full Text Available Rapid changes in atmospheric methane (CH4, temperature and precipitation are documented by Greenland ice core data both for glacial times (the so called Dangaard-Oeschger (DO events as well as for a cooling event in the early Holocene (the 8.2 kyr event. The onsets of DO warm events are paralleled by abrupt increases in CH4 by up to 250 ppbv in a few decades. Vice versa, the 8.2 kyr event is accompanied by an intermittent decrease in CH4 of about 80 ppbv over 150 yr. The abrupt CH4 changes are thought to mainly originate from source emission variations in tropical and boreal wet ecosystems, but complex process oriented bottom-up model estimates of the changes in these ecosystems during rapid climate changes are still missing. Here we present simulations of CH4 emissions from northern peatlands with the LPJ-Bern dynamic global vegetation model. The model represents CH4 production and oxidation in soils and transport by ebullition, through plant aerenchyma, and by diffusion. Parameters are tuned to represent site emission data as well as inversion-based estimates of northern wetland emissions. The model is forced with climate input data from freshwater hosing experiments using the NCAR CSM1.4 climate model to simulate an abrupt cooling similar to the widespread 8.2 kyr event. As a main result we get a concentration reduction of ~10 ppbv per degree K change of mean northern hemispheric surface temperature in peatlands. This sensitivity comprises effects on peatland emissions of similar size by the temperature itself as well as by the accompanying change in precipitation rate, hence water table. Comparison with the ice core record reveals that a change in boreal peatland emissions alone could not completely account for the 80 ppbv methane decline during the 8.2 kyr event, pointing to a significant contribution from tropical wetlands to this event.

  3. Revision Notes

    CERN Document Server

    Matthewson, Siobhan; Debbadi, Margaret

    2012-01-01

    Revision Notes: CCEA ICT for GCSE has been written by experienced teachers and examiners so that you can be confident that it covers only the facts and ideas you will be expected to recall and use in the exam. - Essential facts are carefully organised to make revising easier. - Exams tips show you how to avoid losing marks and get the best grade. - Check your understanding questions support you in the run-up to the exams, with answers provided free online at www.hodderplus.co.uk. This book will help you plan and pace your revision to suit your learning needs and can be integrated with other re

  4. Ethical Revision.

    Science.gov (United States)

    Jackman, Mary Kathryn

    1994-01-01

    Discusses the dilemma of how to respond to student papers advancing morally repugnant positions. Advocates conceptualizing writing as an ethical act and connecting ethics and revision. Describes briefly how three such student papers were handled. (SR)

  5. Hip Revision

    Medline Plus

    Full Text Available Hip Revision Featuring the ZMR® Hip System Tapered Distal Stem Zimmer, Inc. Winfield, Illinois September 3, 2009 Welcome to this OR Live webcast presentation, brought to you by Zimmer. ...

  6. Glacial lake drainage in Patagonia (13-8 kyr) and response of the adjacent Pacific Ocean

    Science.gov (United States)

    Glasser, Neil F.; Jansson, Krister N.; Duller, Geoffrey A. T.; Singarayer, Joy; Holloway, Max; Harrison, Stephan

    2016-01-01

    Large freshwater lakes formed in North America and Europe during deglaciation following the Last Glacial Maximum. Rapid drainage of these lakes into the Oceans resulted in abrupt perturbations in climate, including the Younger Dryas and 8.2 kyr cooling events. In the mid-latitudes of the Southern Hemisphere major glacial lakes also formed and drained during deglaciation but little is known about the magnitude, organization and timing of these drainage events and their effect on regional climate. We use 16 new single-grain optically stimulated luminescence (OSL) dates to define three stages of rapid glacial lake drainage in the Lago General Carrera/Lago Buenos Aires and Lago Cohrane/Pueyrredón basins of Patagonia and provide the first assessment of the effects of lake drainage on the Pacific Ocean. Lake drainage occurred between 13 and 8 kyr ago and was initially gradual eastward into the Atlantic, then subsequently reorganized westward into the Pacific as new drainage routes opened up during Patagonian Ice Sheet deglaciation. Coupled ocean-atmosphere model experiments using HadCM3 with an imposed freshwater surface “hosing” to simulate glacial lake drainage suggest that a negative salinity anomaly was advected south around Cape Horn, resulting in brief but significant impacts on coastal ocean vertical mixing and regional climate. PMID:26869235

  7. Glacial lake drainage in Patagonia (13-8 kyr) and response of the adjacent Pacific Ocean.

    Science.gov (United States)

    Glasser, Neil F; Jansson, Krister N; Duller, Geoffrey A T; Singarayer, Joy; Holloway, Max; Harrison, Stephan

    2016-01-01

    Large freshwater lakes formed in North America and Europe during deglaciation following the Last Glacial Maximum. Rapid drainage of these lakes into the Oceans resulted in abrupt perturbations in climate, including the Younger Dryas and 8.2 kyr cooling events. In the mid-latitudes of the Southern Hemisphere major glacial lakes also formed and drained during deglaciation but little is known about the magnitude, organization and timing of these drainage events and their effect on regional climate. We use 16 new single-grain optically stimulated luminescence (OSL) dates to define three stages of rapid glacial lake drainage in the Lago General Carrera/Lago Buenos Aires and Lago Cohrane/Pueyrredón basins of Patagonia and provide the first assessment of the effects of lake drainage on the Pacific Ocean. Lake drainage occurred between 13 and 8 kyr ago and was initially gradual eastward into the Atlantic, then subsequently reorganized westward into the Pacific as new drainage routes opened up during Patagonian Ice Sheet deglaciation. Coupled ocean-atmosphere model experiments using HadCM3 with an imposed freshwater surface "hosing" to simulate glacial lake drainage suggest that a negative salinity anomaly was advected south around Cape Horn, resulting in brief but significant impacts on coastal ocean vertical mixing and regional climate. PMID:26869235

  8. Abrupt Climatic Events Observed in Organic-Rich Sediments From Lake Tanganyika, Tropical East Africa, Over the Past 50 kyr

    Science.gov (United States)

    Burnett, A. P.; Weyhenmeyer, C. E.; Scholz, C. A.; Swart, P. K.

    2006-12-01

    Abrupt climate changes such as Dansgaard-Oeschger Cycles and Heinrich Events were first detected in high- latitude records, but an increasing number of studies suggest that these rapid changes are actually global events. The degree to which the tropics drive, control and/or respond to such rapid changes is still poorly understood due to a scarcity of data from low-latitude regions. A recently acquired sediment core from Lake Tanganyika, East Africa, provides a unique archive to study abrupt climate events in the tropics throughout the last glaciation. The core provides a continuous, undisturbed and high resolution climate record over the past 100 kyr. An age-depth model based on 25 new radiocarbon dates provides a solid, high-resolution chronology for the past 50 kyr. Throughout this time, several rapid changes in paleoclimate proxy data are observed along the core. Sedimentation rates remained fairly constant from the Holocene until the Last Glacial Maximum (LGM) but increased abruptly from ~80 mm/1000 yr to ~150 mm/1000 yr around 18 kyr BP. At the same time, the sediment record reveals a sudden increase in total organic carbon (TOC) from 4% to 12% indicating a rapid increase in organic matter contributions at the end of the LGM. Abrupt changes in TOC and δ13C values are also found at ~38 kyr, ~30 kyr and ~16 kyr BP, suggesting a possible link to Heinrich events 4, 3 and 1, respectively. Forthcoming very high-resolution analyses, to augment existing low-resolution data, include δ13C, δ15N, C/N ratios and TOC values. Furthermore, TEX86 measurements will be carried out to determine whether the observed changes in organic matter contributions are associated with changes in water temperatures. In combination with the solid 14C chronology, the new data will allow us to precisely determine the onset, timing and nature of abrupt changes and evaluate them in the global context.

  9. Potential analysis reveals changing number of climate states during the last 60 kyr

    Directory of Open Access Journals (Sweden)

    V. N. Livina

    2010-02-01

    Full Text Available We develop and apply a new statistical method of potential analysis for detecting the number of states of a geophysical system, from its recorded time series. Estimation of the degree of a polynomial potential allows us to derive the number of potential wells in a system. The method correctly detects changes in the number of wells in artificial data. In ice-core proxy records of Greenland paleotemperature, a reduction in the number of climate states from two to one is detected sometime prior to the last glacial maximum (LGM, 23–19 kyr BP. This result is also found in analysis of Greenland Ca data. The bifurcation can be interpreted as loss of stability of the warm interstadial state of the Dansgaard-Oeschger (DO events. The proposed method can be applied to a wide range of geophysical time series exhibiting bifurcations.

  10. Potential analysis reveals changing number of climate states during the last 60 kyr

    Directory of Open Access Journals (Sweden)

    V. N. Livina

    2009-09-01

    Full Text Available We develop and apply a new statistical method of potential analysis for detecting the number of states of a geophysical system, from its recorded time series. Estimation of the degree of a polynomial potential allows us to derive the number of potential wells in a system. The method correctly detects changes in the number of wells in artificial data. In ice-core proxy records of Greenland paleotemperature, a reduction in the number of climate states from two to one is detected sometime prior to the last glacial maximum (LGM, 23–19 kyr BP. This bifurcation can be interpreted as loss of stability of the warm interstadial state of the Dansgaard-Oeschger events. In data spanning the last glacial termination, up to four climate states are detected, plausibly representing the LGM, Bolling-Allerod, Younger Dryas, and the Holocene. The proposed method can be applied to a wide range of geophysical time series exhibiting bifurcations.

  11. Evidence for general instability of past climate from a 250-KYR ice-core record

    DEFF Research Database (Denmark)

    Johnsen, Sigfus Johann; Clausen, Henrik Brink; Dahl-Jensen, Dorthe;

    1993-01-01

    decades. Here we present a detailed stable-isotope record for the full length of the Greenland Ice-core Project Summit ice core, extending over the past 250 kyr according to a calculated timescale. We find that climate instability was not confined to the last glaciation, but appears also to have been...... results1,2 from two ice cores drilled in central Greenland have revealed large, abrupt climate changes of at least regional extent during the late stages of the last glaciation, suggesting that climate in the North Atlantic region is able to reorganize itself rapidly, perhaps even within a few...... interglacial seems to have lasted longer than is implied by the deep-sea SPECMAP record4, in agreement with other land-based observations5,6. We suggest that climate instability in the early part of the last interglacial may have delayed the melting of the Saalean ice sheets in America and Eurasia, perhaps...

  12. Direct linking of Greenland and Antarctic ice cores at the Toba eruption (74 kyr BP

    Directory of Open Access Journals (Sweden)

    A. Svensson

    2012-11-01

    Full Text Available The Toba eruption that occurred some 74 kyr ago in Sumatra, Indonesia, is among the largest volcanic events on Earth over the last 2 million years. Tephra from this eruption has been spread over vast areas in Asia where it constitutes a major time marker close to the Marine Isotope Stage 4/5 boundary. As yet, no tephra associated with Toba has been identified in Greenland or Antarctic ice cores. Based on new accurate dating of Toba tephra from Malaysia and on accurately dated European stalagmites the Toba event is known to occur between the onsets of Greenland Interstadials (GI 19 and 20. Furthermore, the existing linking of Greenland and Antarctic ice cores by gas records and by the bipolar seesaw hypothesis suggests that the Antarctic counterpart is situated between Antarctic Isotope Maxima (AIM 19 and 20.

    In this work we suggest a direct synchronization of Greenland (NGRIP and Antarctic (EDML ice cores at the Toba eruption based on matching of a pattern of bipolar volcanic spikes. Annual layer counting between volcanic spikes in both cores allows for a unique match. We first demonstrate this bipolar matching technique at the already synchronized Laschamp geomagnetic excursion (41 kyr BP before we apply it to the suggested Toba interval. The Toba synchronization pattern covers some 2000 yr in GI-20 and AIM 19/20 and includes nine acidity peaks that are recognized in both ice cores.

    The suggested bipolar Toba synchronization has decadal precision. It thus allows a determination of the exact phasing of inter-hemispheric climate in a time interval of poorly constrained ice core records, and it allows for a discussion of the climatic impact of the Toba eruption in a global perspective. Furthermore, our bipolar match provides a way to place paleo-environmental records other than ice cores into a precise climatic context.

  13. Geomagnetic intensity variations for the past 6 kyr: New archeointensity results from China

    Science.gov (United States)

    Cai, S.; Tauxe, L.; Deng, C.; Zhu, R.

    2013-05-01

    The geomagnetic field is a window to the motion of the fluid outer core of Earth, which has varied over a broad range of timescales. To understand this variation over periods of thousands of years we rely entirely on measurements of remanent magnetization from geological and archeological materials. Archeomagnetic data from Eastern Asia, however, are sparse, particularly those that would be widely regarded as reliable. The longevity of Chinese civilization and the abundant nature of archeological artifacts make archeomagnetic studies within China an important tool for filling in many gaps in our current data sets. In this study, have we carried out paleointensity experiments on 969 specimens, which includes pottery fragments, burnt earth and slags, collected from Shandong, Zhejiang and Hebei Province in China and span the last 6 kyr. Approximately half of the samples yielded results that passed strict data selection and give high-fidelity paleointensities. The virtual axial dipoles moments (VADMs) of our sites range from 4 to 12e22Am2. Our data from the last 2.5 kyr are in good agreement with the ARCH3k.1 model, but deviate at times from the CALS10k.1b model, which is likely due to differences in the data used for these models. At ages older than 3ka, where only the CALS10k.1b model is available for comparison, our data deviate significantly from the model. At ca. 1350 BCE our results suggest a paleointensity high of 12E22Am2, which drops to a low of 4E22Am2 by 2250 BCE. This rapid (less than 1000 year) three-fold change in the paleointensity may have important implications for the dynamics of core flow at this time.

  14. Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica 0–145 kyr BP

    Directory of Open Access Journals (Sweden)

    F. Parrenin

    2011-12-01

    Full Text Available This study aims at refining the synchronisation between the EPICA Dome C (EDC and Vostok ice cores in the time interval 0–145 kyr BP by using the volcanic signatures. 111 common volcanic events were identified by using continuous electrical conductivity (ECM, di-electrical profiling (DEP and sulfate measurements while trying to minimize the distortion of the glaciological chronologies. This is an update and a continuation of previous works performed over the 0–45 kyr interval which provided 56 tie points to the ice core chronologies (Udisti et al., 2004. This synchronisation will serve for the establishment of the next synchronised Antarctic dating. A change of slope in the EDC-depth/Vostok-depth diagram is probably related to a change of accumulation regime as well as to a change of ice thickness upstream of the Vostok lake, but we did not invoke any significant temporal change of surface accumulation at EDC relative to Vostok. A significant phase difference is detected between the EDC and Vostok isotopic records during the 95–120 kyr interval, but not during Termination II. Three possible candidates for the Toba volcanic super-eruption ~73 kyr ago are suggested in the Vostok and EDC volcanic records. However the ECM, DEP and sulfate fingerprints for these three events are not significantly larger than many others in the records.

  15. Geomagnetic field variations during the last 400 kyr in the western equatorial Pacific: Paleointensity-inclination correlation revisited

    Science.gov (United States)

    Yamazaki, T.; Kanamatsu, T.; Mizuno, S.; Hokanishi, N.; Gaffar, E. Z.

    2008-12-01

    A paleomagnetic study was conducted on four piston cores newly obtained from the West Caroline Basin in the western equatorial Pacific in order to investigate variations in paleointensity and inclination during the last 400 kyr. An inclination-intensity correlation was previously reported in this region using giant piston cores, but the quality of the paleomagnetic data of the younger end, the last ca. 300 kyr, was needed to be checked because the upper part of the giant piston cores could suffer from perturbation by oversampling. Age control is based on the oxygen-isotope ratios for one core and inter-core correlation using relative paleointensity for other cores. The mean inclinations of the four cores show negative inclination anomalies ranging from -5.2 to -11.2 degree. The western equatorial Pacific is documented as a region of a large negative inclination anomalies, and the observed values are comparable to those expected from the time-averaged field (TAF) models [Johnson and Constable, 1997; Hatakeyama and Kono, 2002]. Stacked curves of paleointensity and inclination were constructed from the four cores. It was confirmed that geomagnetic variations on the order of 10 to 100 kyrs occur in inclination as well as paleointensity. A cross-correlation analysis showed that significant in-phase correlation occurs between intensity and inclination for periods longer than about 25 kyr, and power spectra of both paleointensity and inclination variations have peaks at ~100 kyr periods. The regional paleointensity stack with higher resolution than the Sint-800 stack [Guyodo and Valet, 1999] should be useful for paleointensity-assisted chronostratigraphy.

  16. Rock magnetic records of Southeast Asian monsoon variability during the past 800 kyr

    Science.gov (United States)

    Suganuma, Y.; Yamazaki, T.; Kanamatsu, T.

    2007-12-01

    Rock magnetic investigations were carried out on a sedimentary core taken from the Ninety-east ridge, the eastern equatorial Indian Ocean in order to reconstruct the South Asia monsoon variability during the past 800 kyr. A 10.2 m long piston core ? MR0503-PC3 was recovered in August 2005 during the R/V Mirai MR0503 cruise. The core site is located in the western flank of the Ninety-east ridge (1×E 13.2'N, 88×E 26.0'E), and water depth is 4400 m. In order to develop an age model for the MR0503-PC3 core, a relative paleointensity record (NRM30mT/IRM30mT) obtained from the core is correlated with the global stack of relative paleointensity records &Sint-? (Guyodo and Valet, 1999). Based on the developed age model, the age of the bottom of the MR0503-PC3 core is ca. 800 ka and an average sedimentation rate is 1.3 cm/kyr. A suite of rock magnetic parameters (Magnetic Susceptibility, IRM, ARM, Mrs/Ms, and S-ratio) was obtained from discrete samples collected from the half-split of the core. Magnetic Susceptibility, IRM, and ARM are used as proxies for the magnetic mineral flux. Mrs/Ms and S-ratio are used as proxies for mean grain size and magnetic mineralogical parameter, respectively. The results show that a magnetic mineral flux increases during warmer periods, whereas the flux decreases during colder periods. On the other hand, magnetic grain size increases during colder periods and decreases during warmer periods. These indicate that a supply of fine-grained magnetite (or maghemite), probably originated to pedogenesis, increases during warmer periods, suggesting intense precipitation related to the South Asian summer monsoon. During MIS 15 to 11, stepwise increases of the magnetic mineral flux accompanied with sudden drops of S-ratios are recognized. The sudden drop of S-ratio is related to intense inputs of coarse-grained hematite and maghemite, probably originated to the chemical weathering of the Himalaya-Tibet plateau. This feature suggests that

  17. Latitudinal Hydrologic Variability Along the East African Rift, Over the Past 200 Kyr

    Science.gov (United States)

    Scholz, C. A.

    2014-12-01

    Within the deep sediments of the large lakes of Africa's Great Rift Valley are continuous environmental records of remarkable antiquity and fidelity. Not only do stratigraphic sections from these basins extend back millions of years, many of the intervals represented contain high-resolution material of decadal resolution or better. East African lake basins remain sparsely sampled however, with only a few long and continuous records available. Our ability to image the lakes using seismic reflection methods greatly exceeds our opportunities for coring and drilling however; assessing stratal relationships observed in the geophysical data permits powerful inferences about past hydrologic changes. With intensive hydrocarbon exploration work underway in East Africa, industry well data can also help constrain and ground truth basin histories. Substantial spatio-temporal hydrologic variability is observed in East African basins over the past 200 kyr. Paleohydrological changes in the late Pleistocene and early Holocene are now well constrained in the northern hemisphere East African topics, with widespread aridity and in some cases lake desiccation observed during Heinrich Event 1. A climate recovery followed in the northern hemisphere East African tropics, with the early Holocene African Humid Period a time of positive water balance across most of the rift valley. The paleohydrology of southern hemisphere tropical East Africa is more equivocal, for instance with negligible draw-down of Lake Malawi at HE1. Whereas these late Pleistocene events represent substantial climate reorganizations, severe droughts during the middle-late Pleistocene (150-65 kyr BP) were far more intense, and produced much more severe drawdowns of Lakes Malawi and Tanganyika. Scientific drill cores, kullenberg cores, and extensive seismic reflection data sets from Lakes Malawi and Tanganyika provide indisputable evidence for lowstands of -500m and -600 m respectively. Climate changes that lowered the

  18. Admissible and Restrained Revision

    CERN Document Server

    Booth, R; 10.1613/jair.1874

    2011-01-01

    As partial justification of their framework for iterated belief revision Darwiche and Pearl convincingly argued against Boutiliers natural revision and provided a prototypical revision operator that fits into their scheme. We show that the Darwiche-Pearl arguments lead naturally to the acceptance of a smaller class of operators which we refer to as admissible. Admissible revision ensures that the penultimate input is not ignored completely, thereby eliminating natural revision, but includes the Darwiche-Pearl operator, Nayaks lexicographic revision operator, and a newly introduced operator called restrained revision. We demonstrate that restrained revision is the most conservative of admissible revision operators, effecting as few changes as possible, while lexicographic revision is the least conservative, and point out that restrained revision can also be viewed as a composite operator, consisting of natural revision preceded by an application of a "backwards revision" operator previously studied by Papini. ...

  19. Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr

    Directory of Open Access Journals (Sweden)

    P. Vallelonga

    2013-03-01

    Full Text Available Atmospheric fluxes of iron (Fe over the past 200 kyr are reported for the coastal Antarctic Talos Dome ice core, based on acid leachable Fe concentrations. Fluxes of Fe to Talos Dome were consistently greater than those at Dome C, with the greatest difference observed during interglacial climates. We observe different Fe flux trends at Dome C and Talos Dome during the deglaciation and early Holocene, attributed to a combination of deglacial activation of dust sources local to Talos Dome and the reorganisation of atmospheric transport pathways with the retreat of the Ross Sea ice shelf. This supports similar findings based on dust particle sizes and fluxes and Rare Earth Element fluxes. We show that Ca and Fe should not be used as quantitative proxies for mineral dust, as they all demonstrate different deglacial trends at Talos Dome and Dome C. Considering that a 20 ppmv decrease in atmospheric CO2 at the coldest part of the last glacial maximum occurs contemporaneously with the period of greatest Fe and dust flux to Antarctica, we confirm that the maximum contribution of aeolian dust deposition to Southern Ocean sequestration of atmospheric CO2 is approximately 20 ppmv.

  20. Iron fluxes to Talos Dome, Antarctica, over the past 200 kyr

    Directory of Open Access Journals (Sweden)

    P. Vallelonga

    2012-12-01

    Full Text Available Atmospheric fluxes of iron (Fe over the past 200 kyr are reported for the coastal Antarctic Talos Dome ice core, based on acid leachable Fe concentrations. Fluxes of Fe to Talos Dome were consistently greater than those at Dome C, with the greatest difference observed during interglacial climates. We observe different Fe flux trends at Dome C and Talos Dome during the deglaciation and early Holocene, attributed to a combination of deglacial activation of dust sources local to Talos Dome and reorganization of atmospheric transport pathways with the retreat of the Ross Sea ice shelf. This supports similar findings based on dust particle sizes and fluxes and Rare Earth Element fluxes. We show that Ca and Fe should not be used as quantitative proxies for mineral dust, as they all demonstrate different deglacial trends at Talos Dome and Dome C. Considering that a 20 ppmv decrease in atmospheric CO2 at the coldest part of the last glacial maximum occurs contemporaneously with the period of greatest Fe and dust flux to Antarctica, we conclude that the maximum contribution of aeolian dust deposition to Southern Ocean sequestration of atmospheric CO2 is approximately 20 ppmv.

  1. Palaeoecology of a 3-kyr biosedimentary record of a coral reef-supporting carbonate shelf

    Science.gov (United States)

    Almeida, Carine M.; Barbosa, Catia Fernandes; Cordeiro, Renato C.; Seoane, José Carlos S.; Fermino, Gerson M.; Silva, Patricia O.; Turcq, Bruno J.

    2013-11-01

    This study assesses the 3-kyr paleoecology and sedimentary evolution of the Abrolhos carbonate shelf, Bahia, Brazil, using a two-meter-long core collected in a carbonate muddy sediment. The paleoecology was based on the distribution of benthic foraminifer functional groups associated with grain size, total organic carbon (TOC), total nitrogen (TN), C/N and δ13C. The results identified three biosedimentary units showing that symbiont-bearing foraminifers (Peneroplis and Archaias) decrease in abundance. However, other small taxa (Miliolinella and Cornuspira) and stress-tolerant genera (Bolivina, Elphidium and Ammonia) increase in abundance toward the core top. Grain size decreases toward the top of the core, suggesting a weakening of hydrodynamic winnowing toward recent time. The TOC and TN concentrations increase, and the C/N ratios decrease, suggesting an increase of marine productivity from nearby goblet-shaped structures called "chapeirões". Changes in the benthic foraminifer community can be linked to the sedimentological and organic matter input, which are the result of climatic and oceanographic variations at different spatial and time scales, thus illustrating reduced potential to support symbiont-bearing foraminifer communities to the end of the Holocene.

  2. Wet periods in northeastern Brazil over the past 210 kyr linked to distant climate anomalies.

    Science.gov (United States)

    Wang, Xianfeng; Auler, Augusto S; Edwards, R Lawrence; Cheng, Hai; Cristalli, Patricia S; Smart, Peter L; Richards, David A; Shen, Chuan-Chou

    2004-12-01

    The tropics are the main source of the atmosphere's sensible and latent heat, and water vapour, and are therefore important for reconstructions of past climate. But long, accurately dated records of southern tropical palaeoclimate, which would allow the establishment of climatic connections to distant regions, have not been available. Here we present a 210,000-year (210-kyr) record of wet periods in tropical northeastern Brazil--a region that is currently semi-arid. The record is obtained from speleothems and travertine deposits that are accurately dated using the U/Th method. We find wet periods that are synchronous with periods of weak East Asian summer monsoons, cold periods in Greenland, Heinrich events in the North Atlantic and periods of decreased river runoff to the Cariaco basin. We infer that the wet periods may be explained with a southward displacement of the Intertropical Convergence Zone. This widespread synchroneity of climate anomalies suggests a relatively rapid global reorganization of the ocean-atmosphere system. We conclude that the wet periods probably affected rainforest distribution, as plant fossils show that forest expansion occurred during these intermittent wet intervals, and opened a forest corridor between the Amazonian and Atlantic rainforests. PMID:15592409

  3. Droughts in the East Asian summer monsoon margin during the last 6 kyrs: Link to the North Atlantic cooling events

    Science.gov (United States)

    Fan, Jiawei; Xiao, Jule; Wen, Ruilin; Zhang, Shengrui; Wang, Xu; Cui, Linlin; Li, He; Xue, Dingshuai; Yamagata, Hideki

    2016-11-01

    Teleconnections to the high latitudes, forcing by the tropical oceans and solar variability have all been suggested as dominant factors in the sub-millennial global climate changes, yet there is little consensus as to the relative importance of these factors for the East Asian summer monsoon (EASM) variability. This study presents the results of high-resolution analyses of Ca and Mg concentrations, Mg/Ca ratio, δ18O and δ13C values of endogenic calcites from a sediment core from Dali Lake in the EASM margin, in order to investigate the sub-millennial EASM variability and its possible driving forces during the last 6 kyrs. Increases in these chemical proxy data were interpreted as drought events in the region due to the intensive evaporation losses overwhelming the water input to the lake. The chemical proxy data in this study combined with multi-proxy indicators including grain size component and total organic carbon concentrations from the same sediment core imply that declines in the EASM intensity may have played a dominant role in triggering the drought events during the last 6 kyrs. The results indicate that the EASM intensity significantly declined at the intervals of 5.8-4.75, 3.2-2.8, 1.65-1.15 and 0.65-0.2 kyrs BP. Large declines in the EASM intensity during the last 6 kyrs correspond in time to occurrences of ice-rafted debris in the North Atlantic, indicating that millennial-to-centennial scale changes in the EASM intensity were mainly controlled by climatic processes occurring in the northern high latitudes. These data imply that persistent global warming may be favorable for the strengthening of the EASM circulation and for the transportation of more rainfall to the semi-arid regions of northern China on sub-millennial scales.

  4. High Sedimentation Rate Paleomagnetic Records for the Last 70 kyrs From the Chilean Margin (ODP Sites 1233, 1234, 1235)

    Science.gov (United States)

    Stoner, J. S.; Lund, S.; Channell, J. E.; Mix, A. C.; Davies, M. H.; Lamy, F.

    2008-12-01

    Sediments that accumulate at around 1-m/kyr or greater preserve a paleomagnetic record that, under favorable conditions, may record the original geomagnetic input with little smoothing. However, such great rates of accumulation come with a price as features of interest are often deeply buried and may only be adequately recovered using drilling technologies. Here we present a full-vector geomagnetic reconstruction for the last 70,000 yrs from ultrahigh resolution records obtained through ODP drilling (Leg 202) on the Chilean Margin. ODP Site 1233 (41.0 S, 74.26 W, water depth 838 m) provides a 135-mcd u-channel derived directional paleomagnetic secular variation (PSV) and relative paleointensity (RPI) records. The chronology is constrained by AMS radiocarbon dates and tuning of alkenone sea surface temperature to Antarctic ice core temperature records back to 70,000 years BP. To the north, ODP Sites 1234 (36.13 S, 73.40W, water depth 1015 m) and 1235 (36.9 S, 73.33 W, water depth 489 m) provide independently dated shipboard and developing u-channel paleomagnetic records that reproduce many of the geomagnetic features observed at Site 1233 including excursions and high amplitude PSV intervals, while providing additional radiocarbon and isotopic constraints for development of a regional master chronology. All three Sites have exceptionally high glacial sedimentation rates that average 2-m/kyr for 1233, 80-cm/kyr for 1234 and 1-m/kyr for 1235. Fortuitously, the Laschamp magnetic excursion at Site 1233 occurs during an interval where sedimentation rates exceed 3-m/kyr. The Site 1233 chronology indicates that the Laschamp event, centered at 41,000 yrs BP, has a duration in reverse polarity of only 600 yrs, with polarity transitions occurring in less than 200 yrs within a 1500 yr long interval of low RPI. The path of virtual geomagnetic pole (VGP) positions for the Laschamp excursion at Site 1233 is generally consistent with the hypothesis of a simple field geometry

  5. Sea surface temperature reconstructions over the last 70 kyr off Portugal: Biomarker data and regional modeling

    Science.gov (United States)

    Darfeuil, Sophie; Ménot, Guillemette; Giraud, Xavier; Rostek, Frauke; Tachikawa, Kazuyo; Garcia, Marta; Bard, Édouard

    2016-01-01

    This study aims at providing robust temperature reconstructions for a key oceanographic setting in the North Atlantic and at understanding the nature of the temperature signal recorded by the two biomarkers Uk'37 and TEX86, considering season and depth of production. To do so, high-resolution signals of Uk'37 and TEX86 are determined for the last 70 kyr for core MD95-2042, located off Portugal. Signals of Uk'37 and TEX86 present a tight correlation, demonstrating a dominant temperature effect. Uk'37 signals correspond well to the annual mean sea surface temperature (SST), whereas TEXH86-derived temperatures are 5.6°C higher, which is unrealistically warm for this area. Unsuitable TEX86 global linear calibrations on the Iberian Margin may suggest a possible occurrence of archaeal communities with specific temperature response. To assess the impact of different season or depth of production of the biomarkers on the recorded temperature in the sediment, modeled temperature proxies (Tproxies) are introduced in a Regional Oceanic Modeling System and tested for different seasons (annual/summer/winter) and depths (surface and 0-200 m) of production for three climate modes (Present Day (PD), Last Glacial Maximum (LGM), and Heinrich Stadials (HS)). Similar temperature amplitudes between climate modes are found at MD95-2042 core site for observations, for both biomarkers, and for modeled annual surface production Tproxy: 5.5-7°C for ΔT(PD-LGM) and 3-4°C for ΔT(LGM-HS). Therefore, we propose a new TEXH86 regional calibration to reconstruct present and past annual mean SSTs on the Iberian Margin.

  6. Terrestrial biosphere changes over the last 120 kyr and their impact on ocean δ 13C

    Directory of Open Access Journals (Sweden)

    B. A. A. Hoogakker

    2015-03-01

    Full Text Available A new global synthesis and biomization of long (>40 kyr pollen-data records is presented, and used with simulations from the HadCM3 and FAMOUS climate models to analyse the dynamics of the global terrestrial biosphere and carbon storage over the last glacial–interglacial cycle. Global modelled (BIOME4 biome distributions over time generally agree well with those inferred from pollen data. The two climate models show good agreement in global net primary productivity (NPP. NPP is strongly influenced by atmospheric carbon dioxide (CO2 concentrations through CO2 fertilization. The combined effects of modelled changes in vegetation and (via a simple model soil carbon result in a global terrestrial carbon storage at the Last Glacial Maximum that is 210–470 Pg C less than in pre-industrial time. Without the contribution from exposed glacial continental shelves the reduction would be larger, 330–960 Pg C. Other intervals of low terrestrial carbon storage include stadial intervals at 108 and 85 ka BP, and between 60 and 65 ka BP during Marine Isotope Stage 4. Terrestrial carbon storage, determined by the balance of global NPP and decomposition, influences the stable carbon isotope composition (δ13C of seawater because terrestrial organic carbon is depleted in 13C. Using a simple carbon-isotope mass balance equation we find agreement in trends between modelled ocean δ13C based on modelled land carbon storage, and palaeo-archives of ocean δ13C, confirming that terrestrial carbon storage variations may be important drivers of ocean δ13C changes.

  7. Paleoenvironmental significance of clay mineral assemblages in the southeastern Arabian Sea during last 30 kyr

    Indian Academy of Sciences (India)

    Siddhartha Sankar Das; Ajai K Rai; Vaseem Akaram; Dhananjai Verma; A C Pandey; Koushik Dutta; G V Ravi Prasad

    2013-02-01

    A gravity core SK-221 recovered from the southeastern Arabian Sea near Laccadive–Chagos Ridge was examined to identify the sources of detrital clay minerals and to decipher paleoenvironmental changes for the last 30 kyr. The clay mineral assemblages predominantly consist of illite, kaolinite and chlorite with small amounts of smectite. Quartz, feldspar and occasionally gibbsite are the clay-sized non-clay minerals present in the examined section. The detrital clay minerals primarily originated from the hinterland and were supplied to the present site by the numerous small rivers draining western India during preglacial and Holocene periods, and partly by the strong reworking of Indian continental shelf during glacial period. The low values of humidity proxies (kaolinite content, kaolinite to illite and smectite to illite ratios) and better illite crystallinity indicate relatively weak summer monsoon condition that resulted in reduced chemical weathering during glacial period, which was interrupted by a discrete event of winter monsoon intensification at ∼20–17 ka. The increased kaolinite content, higher values of humidity indices and poorer illite crystallinity reflect high humidity that resulted in strong hydrolysis activity during the preglacial and Holocene periods. The increased CaCO3 during above periods also indicates less terrigenous dilution and intensified southwest monsoon-led upwelling which result in higher surface biogenic productivity. The characteristic clay mineral associations broadly suggest dry to semi-drier conditions during Heinrich Events H1, H2, and H3 and also during Younger Dryas. The low values of biogenic carbonate and organic carbon also indicate low productivity associated with weak summer monsoons during Heinrich Events. Abrupt increased humidity was recorded at 15–12.7 ka (Bølling/Allerød Event) sandwiched between two lows of Heinrich Events. Cycles of millennial timescale variations 2300, 1800, 1300 and 1000 yr have been

  8. Sedimentary organic matter variations in the Chukchi Borderland over the last 155 kyr

    Directory of Open Access Journals (Sweden)

    S. F. Rella

    2011-03-01

    Full Text Available Knowledge on past variability of sedimentary organic carbon in the Arctic Ocean is important to assess natural carbon cycling and transport processes related to global climate changes. However, the late Pleistocene oceanographic history of the Arctic is still poorly understood. In the present study we show sedimentary records of total organic carbon (TOC, C/N and CaCO3 from a piston core recovered from the northern Northwind Ridge in the far western Arctic Ocean, a region potentially sensitively responding to past variability in surface current regimes and sedimentary processes such as coastal erosion. An age model based on correlation of our CaCO3 record with the benthic δ18O stack, supplemented by lithological constraints, suggests that the piston core records paleoenvironmental changes of the last 155 kyr. According to this age model, TOC and C/N show orbital-scale increases and decreases that can be respectively correlated to the waxing and waning of large ice sheets dominating the Eurasian Arctic, suggesting advection of fine suspended matter derived from glacial erosion to the Northwind Ridge by eastward flowing intermediate water and/or surface water and sea ice during cold episodes of the last two glacial-interglacial cycles. At millennial scales, increases in TOC and C/N appear to correlate to a suite of Dansgaard-Oeschger Stadials between 120 and 40 ka before present (BP and thus seem to respond to abrupt northern hemispheric temperature changes. Between 65 and 40 ka BP, closures and openings of the Bering Strait could have additionally influenced TOC and C/N variability. CaCO3 content tends to anti-correlate with TOC and C/N on both orbital and millennial time scales, which we interpret as enhanced sediment advection from the carbonate-rich Canadian Arctic via an extended Beaufort Gyre during warm periods of the last two glacial-interglacial cycles and increased terrestrial organic carbon

  9. 130 kyr of Dust Fluxes in the Equatorial Pacific: Implications for ITCZ movement and intensity

    Science.gov (United States)

    Jacobel, A. W.; Costa, K.; McManus, J. F.; Winckler, G.; Anderson, R. F.

    2015-12-01

    The position of the Intertropical Convergence Zone (ITCZ) has been hypothesized to play a role in linking the climate of the poles to the tropics and in predicating important changes in ocean overturning, particularly on deglacial timescales. One method of tracking the paleo-position of the ITCZ is through the quantification of 230Thxs,0-normalized 232Th concentrations in marine sediments which act as proxy for aeolian dust flux. Because the ITCZ is an efficient scavenger of atmospheric particulates, changes in the latitude of maximum dust flux can yield insight into variations in ITCZ position. This technique has been successfully utilized to reconstruct the movement of the ITCZ during the last deglaciation in the eastern equatorial Pacific (McGee et al., 2007). In this study we apply a similar approach to produce a high-resolution reconstruction of ITCZ movement in the central equatorial Pacific over the last 130 kyr, including the last glacial inception, Marine Isotope Stage 4, the Last Glacial Maximum and Termination I (TI). We present records of 232Th/230Thxs,0 as a proxy for continentally sourced dust at sub-millennial resolution along a latitudinal transect of three sites beneath the shifting ITCZ. We pair our new data with existing dust flux data from Antarctica, Greenland and the North Pacific to differentiate between changes in the ITCZ and variability in atmospheric dust abundance. Our data reconstruct a spatially different pattern of ITCZ movement during the last two deglaciations, which allows us to locate our records in the context of recent studies challenging our mechanistic understanding of deglacial terminations. Additionally, our data show evidence of precessional forcing in reconstructed dust fluxes, and we evaluate changes in ITCZ precipitation intensity (scavenging efficiency) and enhanced aeolian transport in tropical dust source regions as the driver of this variability.D. McGee, F. Marcantonio, and J. Lynch-Stieglitz, "Deglacial Changes in

  10. Calcium isotopes in caves as a proxy for aridity: Modern calibration and application to the 8.2 kyr event

    Science.gov (United States)

    Owen, R. A.; Day, C. C.; Hu, C.-Y.; Liu, Y.-H.; Pointing, M. D.; Blättler, C. L.; Henderson, G. M.

    2016-06-01

    We present the first study of Ca isotope cycling in a natural cave system, with measurements of bedrock, dripwater and recently formed carbonate, coupled to a first stalagmite time-series spanning the 8.2 kyr event. Dripwaters at Heshang Cave (Central China; 30°27‧N, 110°25‧E) are isotopically heavy relative to the dolomite bedrock, the result of prior calcite precipitation (PCP) occurring earlier in the drip flow path. A simple Rayleigh fractionation model quantifies the extent of PCP in the modern environment at 36% Ca removal. The observed in situ calcium isotope fractionation factor between dripwater and carbonate is Δ 44 / 42 Ca = - 0.63 ± 0.03 ‰ and does not vary during the annual cycle. Measurements of speleothem carbonate spanning the 8.2 kyr event show the response of Ca isotopes to changing climate. δ44/42Ca increases by 0.35‰ at the onset of the event, coeval with changes in δ18O and Mg/Ca, and remains high for 80 yr. This change is explained by decreased rainfall leading to increased PCP; an interpretation supported by established PCP proxies (Mg/Ca, Sr/Ca and Ba/Ca). Ca isotopes indicate that PCP increased to 60% Ca removal during the event, which, from application of a simple box model, suggests mean annual rainfall decreased by approximately a third in Central China during the 8.2 kyr event. The response of Ca isotopes across this event demonstrates their potential for the assessment of past conditions, including past dripwater flow rates and rainfall.

  11. Millennial-scale influence of southern intermediate component water into the North-east Atlantic during the last 40 kyr

    Science.gov (United States)

    Colin, Christophe; Frank, Norbert; Dubois-Dauphin, Quentin; Bonneau, Lucile; Montero-Serrano, Jean-Carlos; Blamart, Dominique; Van Rooij, David

    2014-05-01

    Throughout the last glacial-interglacial cycle major reorganisations of water masses in the North Atlantic occurred. Mediterranean Outflow Water (MOW) being an important source of saline and warm intermediate water has been modulated regarding its strength and mean depth. The Gulf of Cadiz near the Strait of Gibraltar is located in a region influenced by the 3 major temperate Atlantic mid-depth water masses: MOW, mid-depth subtropical gyre water and Antarctic Intermediate Water (AAIW). Those water masses are today characterized by contrasted Nd isotopic composition (ɛNd): NACW ɛNd = -11.9; MOW ɛNd= -9.4; AAIW ɛNd= -6 to -7. Here, we have investigated ɛNd of seawater and cold-water corals (L. pertusa, M. oculata and D. dianthus) located to the Alboran Sea and to the SE of the Gulf of Cadiz (between 550 and 850 m) to constrain the present day seawater ɛNd and to reconstruct the past water mass mixing, i.e. MOW variability during the last 37 kyr. Seawater ɛNd values of ~-11.6 indicate that the NACW is today the predominant water mass at the position of the coral bearing sediment core MD08-3231. Cold-water coral fragments have been 230Th/U dated yielding ages of 4.5 to 37 kyr. The coral ɛNd values range from -8 to -10.4 during the last 37 kyr, most likely indicating changes of the dominant water mass provenance. Glacial cold-water corals (from 19 to 37 kyr) are characterized by more radiogenic ɛNd values (> -9.5) compared to the ones from the Holocene demonstrating a decreasing contribution of MOW and/or AAIW in the SE Gulf of Cadiz during climate warming. Strikingly, Heinrich events H2 and H3 reveal even more radiogenic ɛNd values (~-8). In addition, deep-sea corals from the Alboran Sea indicate that ɛNd of the MOW do not change significantly trough time. These results imply a higher contribution of AAIW at 500 m depth in the eastern temperate Atlantic. This first coral based paleo-seawater ɛNd record for the Gulf of Cadiz thus points to significant

  12. Raised marine terraces in the Northern Calabrian Arc (Southern Italy: a ~ 600 kyr-long geological record of regional uplift

    Directory of Open Access Journals (Sweden)

    L. Cucci

    2004-06-01

    Full Text Available The Sibari Plain in the Northeastern Calabrian Arc displays a well-developed suite of marine terraces. This paper deals with i the identification and correlation of the terraces; ii their age assignment and a tentative reconstruction of the uplift history of the area; iii the relationships between terraces and major faults in the study area and between uplift in the Plain and pattern of Quaternary uplift throughout the Calabrian Arc. Identifying wavecut platforms and inner-edge fragments over a linear extent of ~ 100 km was achieved by photo interpretation, 1:25 000 scale map analyses and field survey. Morphological evidence led to the correlation of the identified fragments into five complete strandlines (numbered #1 to #5 lowest to highest, at elevations ranging from 60 m to ~ 650 m. Analysis of two parameters of the emerged platform-cliff systems, namely the platform-cliff ratio and the dissection percentage, further testifies that the two lowest terraces are strongly correlative. A 130 kyr AAR age of in situ fossil samples of Glycymeris collected at 114 m elevation within the deposit of Terrace #2 indicates a key correlation of T#2 with MIS 5.5 (the peak of the last interglacial, 124 kyr, i.e. an uplift rate of ~ 0.98 mm/yr for this strandline. The other four terraces have been tentatively associated with MIS 5.3, 7, 9 and 15. Geological observations independent of geochronological evidence provide consistent lower age boundaries for the terraces and supply further constraints to this interpretation. Investigating the relations between setting of the terraces and location of major tectonic structures in the region is suggestive of no recent activity of two previously recognized faults, the «Sangineto Line» and the «Corigliano-Rossano Line». Instead, some limited anomalies that affect the terraces are tentatively associated with the activity of the Castrovillari Fault. Therefore, sustained uplift has been the long-term dominant

  13. Late Glacial and Holocene changes in vegetation cover and climate in southern Siberia derived from a 15 kyr long pollen record from Lake Kotokel

    Directory of Open Access Journals (Sweden)

    P. E. Tarasov

    2009-07-01

    Full Text Available In this study a radiocarbon-dated pollen record from Lake Kotokel (52°47´ N, 108°07´ E, 458 m a.s.l. located in southern Siberia east of Lake Baikal was used to derive quantitative characteristics of regional vegetation and climate from about 15 kyr BP (1 kyr=1000 cal. yr until today. Quantitative reconstruction of the late glacial vegetation and climate dynamics suggests that open steppe and tundra communities predominated in the study area prior to ca. 13.5 kyr BP and again during the Younger Dryas interval, between 12.8 and 11.6 kyr BP. The pollen-based climate reconstruction suggests lower-than-present mean January (~−38°C and July (~12°C temperatures and annual precipitation (~270–300 mm values during these time intervals. Boreal woodland replaced the primarily open landscape around Kotokel three times at about 14.8–14.7 kyr BP, during the Allerød Interstadial between 13.3–12.8 kyr BP and with the onset of the Holocene interglacial between 11.5 and 10.5 kyr BP, presumably in response to a noticeable increase in precipitation, and in July and January temperatures. The maximal spread of the boreal forest (taiga communities in the region is associated with a warmer and wetter-than-present climate (Tw~17–18°C, Tc~−19°C, Pann~500–550 mm that occurred ca. 10.8–7.3 kyr BP. During this time interval woody vegetation covered more than 50% of the area within a 21×21 km window around the lake. The pollen-based best modern analogue reconstruction suggests a decrease in woody cover percentages and in all climatic variables about 7–6.5 kyr BP. Our results demonstrate a gradual decrease in precipitation and mean January temperature towards their present-day values in the region around Lake Kotokel since that time.

  14. A 400 kyr record of combustion oxygen demand in the western equatorial Pacific: Evidence for a precessionally forced climate response

    Science.gov (United States)

    Perks, Helen M.; Keeling, Ralph F.

    1998-02-01

    We have developed a combustion analysis technique for sediments which measures the amount of O2 consumed by the reduced species. We have measured this quantity, which we call "combustion oxygen demand (COD)," on a carbonate-rich sediment core from the Ontong-Java Plateau in the western equatorial Pacific back to marine oxygen isotope stage 11. The precision of the COD technique is ±6.3 µmol O2 g-1, which corresponds to ˜±0.0076% wt Corg, assuming oxidation of organic carbon dominates the signal. The COD time series is characterized by values which are about twice as high during glacials as during interglacials, the largest shift occurring from 401 µmol O2 g-1 in midstage 6 to 144 µmol O2 g-1 at 5e, and is coherent with the oxygen isotope curve of Globigerinoides sacculifer in the same core at the Milankovitch frequencies of 100 and 41 kyr. Pronounced variations in the 19-23 kyr band suggest that the climate of the western equatorial Pacific is sensitive to precessional forcing, a response not apparent from other records obtained in this region.

  15. A compact BaF sub 2 array for high energy (< or approx. 50 MeV) photons

    Energy Technology Data Exchange (ETDEWEB)

    Kernan, W.J.; Gan, N.; Caraley, A.L.; Fineman, B.J.; McGrath, R.L.; Vojtech, R.J. (Dept. of Physics, State Univ. of New York, Stony Brook, NY (United States))

    1992-03-15

    A compact array of seven BaF{sub 2} detectors with active plastic shielding has been developed for the measurement of hard photons in the presence of fast neutrons and cosmic ray muon background. (orig.).

  16. Loosening After Acetabular Revision

    DEFF Research Database (Denmark)

    Beckmann, Nicholas A.; Weiss, Stefan; Klotz, Matthias C.M.;

    2014-01-01

    The best method of revision acetabular arthroplasty remains unclear. Consequently, we reviewed the literature on the treatment of revision acetabular arthroplasty using revision rings (1541 cases; mean follow-up (FU) 5.7 years) and Trabecular Metal, or TM, implants (1959 cases; mean FU 3.7 years)...

  17. The Environmental impact of the 8.2 and 9.2 kyr events in the UK.

    Science.gov (United States)

    Jones, Richard; Reinhardt, Liam; Halloran, Paul; Hatton, Jackie; Marshall, Jim

    2015-04-01

    The instability of the Early Holocene climate in NW Europe is due in part to the impact of freshwater pulses in the North Atlantic disrupting thermohaline circulation and reducing the northward transport of heat. Two of the most significant climatic episodes are the 8.2 and 9.2 kyr events, characterised by significant oxygen isotopic excursions in NW European lacustrine and speleothem records, the Greenland Ice-core record and changing SSTs in the North Atlantic sector. Assessing the impact of these two events on terrestrial systems is problematic due to the difficulty in identifying their signature in terrestrial archives. A sub-decadal oxygen isotope record from a Holocene micrite core from Hawes Water NW England provides unambiguous evidence for two significant isotopic excursions equivalent to the 9.2 and 8.2 kyr events. Lasting 50 and 150 yr respectively they are characterised by a slight cooling of around 1.6oC in mean July air temperatures (chironomid inferred). The environmental impact of each event was minimal, with no evidence for any significant changes in the range or abundance of plant taxa and no evidence for catchment instability. These results support the idea that the 8.2 and 9.2 kyr events are primarily a reflection of the changing isotopic composition of meteoric precipitation (δ18Op) and in the UK at least were of limited environmental significance. Analysis of subpolar gyre behaviour and atmospheric circulation across preindustrial control simulations from CMIP5, suggest that the negative isotopic excursions recorded at Hawes Water most likely reflect the influx of isotopically lighter moisture from the Arctic. An influx of freshwater down the Hudson River and into the North Atlantic Current could result in the development of low pressure anomalies over Scandinavia, bringing arctic air and moisture to the UK. This could be expected to produce the relatively minor decline in summer temperatures but would result in the significant negative shift

  18. Impact of climate variability on terrestrial environment in Western Europe between 45 and 9 kyr cal. BP: vegetation dynamics recorded by the Bergsee Lake (Black Forest, Germany).

    Science.gov (United States)

    Duprat-Oualid, Fanny; Begeot, Carole; Rius, Damien; Millet, Laurent; Magny, Michel

    2016-04-01

    Between 9 and 45 kyr cal. BP, two great transitions lead the global climate system to evolve from the Last-Glacial period (115-14.7 kyr cal. BP), to two successive warmer periods, the Late-Glacial Interstadial (14.7-11.7 kyr cal. BP) and the Holocene (11.7-0 kyr cal. BP). δ18O variations recorded in Greenland ice cores (GRIP & NGRIP) revealed high frequency climate variability within the Last Glacial. These reference isotopic records highlighted a succession of centennial-to-millennial warm/cold events, the so-called Greenland Interstadials (GI) and Greenland Stadials (GS). The number continental records about the period 14.7-0 kyr cal. BP is substantial. This allowed to understand the vegetation dynamics in response to climate changes this period at the North-Atlantic scale. However, sequences covering the glacial period (beyond 20 kyr cal.BP) remain rare, because of hiatuses mostly due to local glaciers. Therefore, sedimentary continuous records of vegetation dynamics are still needed to better understand climate changes during the Last Glacial in Western Europe (Heiri et al. 2014). Here we present a new high-resolution pollen record from Lake Bergsee (47°34'20''N, 7°56'11''E, 382 m a.s.l). This lake is located south of Black Forest and north of the Alps, beyond the zone of glaciers maximal extension. Therefore it could have recorded the whole last climatic cycle, i.e. 120-0 kyr cal. BP. In 2013, a 29 m long core was extracted from the Bergsee. According to the depth-age model based on 14C AMS dating and the Laacher See Tephra (LST), the record spans continuously at least the last 45 kyrs. The first series of pollen analysis, focused on the 45-9 kyr cal. BP time window, allows us to reconstruct a precise, faithful and continuous vegetation history at the centennial scale. This high temporal resolution enabled to assess the response of vegetation to secular climate events (e.g. GI-4 = 200 yrs). First, our results show that vegetation responded to climate

  19. Stratigraphic Correlation of an Excursion at 22 kyr in the U.S. Great Basin - the Hilina Pali Excursion?

    Science.gov (United States)

    Liddicoat, J. C.; Coe, R. S.

    2013-12-01

    An unusually large secular variation of the geomagnetic field recorded in outcrops of pluvial Lake Russell sediment about 22 kyr old in the Mono Basin, CA, can be used for precise correlation to other lacustrine sections in the western U.S., and perhaps beyond. We present new AF and thermal demagnetization results for paired samples at 2-cm intervals between ash layers 7 and 8 of Lajoie (1968) in the bank of Wilson Creek that document an excursion having an inclination as low as 16 degrees and as high as 73 degrees, while the declination swings from 15 degrees west during the low inclination to 30 east when the inclination is high, and back to average northerly declination and expected inclination. The corresponding VGPs form a narrow clockwise-trending loop centered at about 50 N, 30 E. The Mono Lake Excursion (MLE; Liddicoat and Coe, 1979) occurs 1.7 m lower in the same section. The best estimates for the ages of the two excursions are about 22 and 32 kyr, based on 14-C dates (Cassata et al., 2010). About 150 km to the north, sediments of about the same age exposed along the Truckee River that were deposited in pluvial Lake Lahontan record a similar geomagnetic signature. Moreover, both the MLE and this excursion are exhibited at the appropriate levels in a sediment core taken from Pyramid Lake, the remnant of Lake Lahontan (Benson et al., 2008). Thus, this excursion is a valuable marker for high-resolution correlation of Quaternary sediments in the western U.S., especially when paired with the MLE. It is tempting to try to identify this geomagnetic feature with others of about the same age further away. On the island of Hawaii, Coe et al. (1978) discovered a lava flow on the Hilina Pali with a calibrated 14-C age of 21 +/-1 kyr that has an inclination about 30 degrees shallower and a paleointensity 60 percent lower than today. Later Teanby et al. (2002) documented an excursion with inclinations as low as -35 degrees, recorded by around 40 successive flows with

  20. Sea ice and millennial-scale climate variability in the Nordic seas 90 kyr ago to present

    Science.gov (United States)

    Hoff, Ulrike; Rasmussen, Tine L.; Stein, Ruediger; Ezat, Mohamed M.; Fahl, Kirsten

    2016-07-01

    In the light of rapidly diminishing sea ice cover in the Arctic during the present atmospheric warming, it is imperative to study the distribution of sea ice in the past in relation to rapid climate change. Here we focus on glacial millennial-scale climatic events (Dansgaard/Oeschger events) using the sea ice proxy IP25 in combination with phytoplankton proxy data and quantification of diatom species in a record from the southeast Norwegian Sea. We demonstrate that expansion and retreat of sea ice varies consistently in pace with the rapid climate changes 90 kyr ago to present. Sea ice retreats abruptly at the start of warm interstadials, but spreads rapidly during cooling phases of the interstadials and becomes near perennial and perennial during cold stadials and Heinrich events, respectively. Low-salinity surface water and the sea ice edge spreads to the Greenland-Scotland Ridge, and during the largest Heinrich events, probably far into the Atlantic Ocean.

  1. Cosmic airburst debris, climate anomalies and societal reactions at 4.2kyr BP: from North Syria to Adelie Land

    Science.gov (United States)

    Coqueugniot, E.; Courty, M. M.

    2012-12-01

    The linkages established between dust spikes, unprecedented drought and societal disruption at 4.2 kyr BP have yet failed elucidating the marked increase in aerosol. The volcanic dust component or the erratic spatial pattern are among other puzzling anomalies for a global climate event. We examine here the 4.2 kyr BP debris records from high quality sedimentary archives across the two hemispheres: (1) at Tell Dja'de (Syria), a carbonaceous surface sealed by a EB III/IV Bronze age cemetery; (2) at Tell Ahmar (Syria), the nearly intact collapsed wood frame of the Akkad palace sandwiched between the last 3rd millennium BC plastered floors and massive destruction layers of the monumental buildings; (3) debris accumulation from human processed slags in late Akkaddian contexts at Tell Leilan, Tell Chuera, Tell Beydar, Tell Brak (North Syria) and in an EB III/IV one at Umbaschi (South Syria); (4) a tsunami layer at Banda Aceh (Sumatra); (5) deep sea cores from the Mediterranean and Caspian seas, the Indian and Austral oceans. Using an in situ multi-analytical protocol, we focus on the carbonaceous polymorphs and the composite elements that we formerly defined to tracing hypervelocity cosmic airbursts. A meticulous control of their spatial pattern and structural characteristics at meso to nano-scales has helped to distinguishing the intact debris fall of airburst origin from their human processed-byproducts. The later trace the occurrence in the debris airbursts of highly valuable resources, i.e. fossil combustible with singular properties, that have been exploited since the prehistoric time. Evidence for an oceanic impact at 4.2 kyr BP in the Austral ocean are provided by the 3 m record in the Adelie land high resolution marine core (MD03-2601) showing sudden discharge of ice rafted fine debris with impact features. Their fresh fingerprints in the high to low latitude records from the southern hemisphere indicate massive dispersion of impact debris by air and surface

  2. Reconstruction of sea surface temperature variations in the Arabian Sea over the last 23 kyr using organic proxies (TEX86 and UK'37)

    NARCIS (Netherlands)

    Huguet, C.; Kim, J.-H.; Sinninghe Damsté, J.S.; Schouten, S.

    2006-01-01

    Two sediment cores from the western Arabian Sea, NIOP905 and 74KL, were analyzed to determine sea surface temperature (SST) variations over the last 23 kyr. Two organic molecular SST proxies were used, the well-established UK'37 based on long-chain unsaturated ketones synthesized by haptophyte algae

  3. Pollen-based 17-kyr forest dynamics and climate change from the Western Cordillera of Colombia: no-analogue associations and temporarely lost biomes

    NARCIS (Netherlands)

    C.A. Velásquez-R.; H. Hooghiemstra

    2013-01-01

    A 17 kyr long pollen record from the unexplored Western Cordillera of Colombia (Páramo de Frontino; 3460 m elevation) shows vegetation change and inferred climate dynamics at ~ 125 yr resolution. The cold and wet Lateglacial showed well-defined stadials and interstadials. At the transition to the Ho

  4. Three exceptionally strong East-Asian summer monsoon events during glacial conditions in the past 470 kyr

    Directory of Open Access Journals (Sweden)

    D.-D. Rousseau

    2008-12-01

    Full Text Available Chinese loess sequences are interpreted as a reliable record of the past variation of the East Asian monsoon regime through the alternation of loess and paleosols units, dominated by the winter and summer monsoon, respectively. Different proxies have been used to describe this system, mostly geophysical, geochemical or sedimentological. Terrestrial mollusks are also a reliable proxy of past environmental conditions and are often preserved in large numbers in loess deposits. The analysis of the mollusk remains in the Luochuan sequence, comprising L5 loess to S0 soil, i.e. the last 500 ka, shows that for almost all identified species, the abundance is higher at the base of the interval (L5 to L4 than in the younger deposits. Using the present ecological requirements of the identified mollusk species in the Luochuan sequence allows the definition of two main mollusk groups varying during the last 500 kyr. The cold-aridiphilous individuals indicate the so-called Asian winter monsoon regime and predominantly occur during glacials, when dust is deposited. The thermal-humidiphilous mollusks are prevalent during interglacial or interstadial conditions of the Asian summer monsoon, when soil formation takes place. In the sequence, three events with exceptionally high abundance of the Asian summer monsoon indicators are recorded during the L5, L4 and L2 glacial intervals, i.e., at about 470, 360 and 170 kyr, respectively. The L5 and L4 events appear to be the strongest (high counts. Similar variations have also been identified in the Xifeng sequence, distant enough from Luochuan, but also in Lake Baikal further North, to suggest that this phenomenon is regional rather than local. The indicators of the summer monsoon within the glacial intervals imply a strengthened East-Asian monsoon interpreted as corresponding to marine isotope stages 6, 10 and 12, respectively. The L5 and L2 summer monsoons are coeval with Mediterranean sapropels S12 and S6, which

  5. Three exceptionally strong East-Asian summer monsoon events during glacial times in the past 470 kyr

    Directory of Open Access Journals (Sweden)

    D.-D. Rousseau

    2009-04-01

    Full Text Available Chinese loess sequences are interpreted as a reliable record of the past variation of the East Asian monsoon regime through the alternation of loess and paleosols units, dominated by the winter and summer monsoon, respectively. Different proxies have been used to describe this system, mostly geophysical, geochemical or sedimentological. Terrestrial mollusks are also a reliable proxy of past environmental conditions and are often preserved in large numbers in loess deposits. The analysis of the mollusk remains in the Luochuan sequence, comprising L5 loess to S0 soil, i.e. the last 500 ka, shows that for almost all identified species, the abundance is higher at the base of the interval (L5 to L4 than in the younger deposits. Using the present ecological requirements of the identified mollusk species in the Luochuan sequence allows the definition of two main mollusk groups varying during the last 500 kyr. The cold-aridiphilous individuals indicate the so-called Asian winter monsoon regime and predominantly occur during glacials, when dust is deposited. The thermal-humidiphilous mollusks are prevalent during interglacial or interstadial conditions of the Asian summer monsoon, when soil formation takes place. In the sequence, three events with exceptionally high abundance of the Asian summer monsoon indicators are recorded during the L5, L4 and L2 glacial intervals, i.e., at about 470, 360 and 170 kyr, respectively. The L5 and L4 events appear to be the strongest (high counts. Similar variations have also been identified in the Xifeng sequence, distant enough from Luochuan, but also in Lake Baikal further North, to suggest that this phenomenon is regional rather than local. The indicators of the summer monsoon within the glacial intervals imply a strengthened East-Asian monsoon interpreted as corresponding to marine isotope stages 12, 10 and 6, respectively. The L5 and L2 summer monsoons are coeval with Mediterranean sapropels S12 and S6, which

  6. Multiproxy approach revealing climate and cultural changes during the last 26kyrs in south-central Chile

    Science.gov (United States)

    Abarzua, Ana M.; Jarpa, Leonora; Martel, Alejandra; Vega, Rodrigo; Pino, Mario

    2010-05-01

    Multiproxy approach from Purén Lumaco Valley (38°S) describes the paleonvironmental history during the Last Maximum Glacial (LGM) in south-central Chile. Three sediment cores and severals AMS 14C dates were used to perform a complete pollen, diatoms, chironomids, and sedimentological records demonstrating the existence of a large and non profundal paleolake, between 25 and 20kyr BP. Some of these evidence are laminated silty-clay sediments (lacustrine rhythmites), associated with the presence of siderite mineral (FeCO3), besides biological proxies like Fragilaria construens and Stauroforma inermes (planctonic diatoms), and Dicrotendipes sp. and Tanytarsini tribe (littoral chironomids). The pollen ensemble reveals the first glacial refuge of Araucaria araucana forests in the low lands during the LGM. The lake was drained abruptly into a swamp/bog at 12kyr BP and colonized by Myrtaceae wet forest. This evidence suggest the dry/warm climate period of early Holocene in south-central Chile. Later, the sediments indicate variable lacustrine levels, and increase of charcoal particles, associated to current climatic conditions. The pollen spectrum dominated by Myrtaceae and Nothofagus contrasts with a strongly disturb current landscape. Actually, Purén-Lumaco valley constitutes a complex peat-bog system dominated by exotic grasses and forest species (Tritricum aestivum, Pinus radiata and Eucalyptus spp.). Some archaeological antecedents in the area document the human development at ca. 7yrs BP. The greatest archaeological characteristic present in the valley is the kuel, a Mapuche earth accumulation. The presence and extension of almost 300 kuel in the valley reflect the social/economic development, and partly explains why the region was the major resistance area for Spanish colonizer during XVI-XVII centuries. Also the archaeological findings reveal the presence of maize pollen (Zea mays) within their food consumption. The influence of climate and human impact in

  7. Multiproxy Records of Indo-Pacific Climate and Environmental Change from Lake Towuti, Indonesia, Since 60 Kyr BP

    Science.gov (United States)

    Russell, J. M.; Vogel, H.; Bijaksana, S.; Konecky, B. L.; Wicaksono, S. A.; Costa, K.; Wattrus, N. J.; Melles, M.

    2014-12-01

    Lake Towuti is a large tectonic lake in central Sulawesi, Indonesia that provides a unique opportunity to reconstruct climate and terrestrial environments in the heart of the Indo-Pacific warm pool. Long-term climate variations in this region are governed by a complex interplay between the Australasian monsoons and the ENSO system forced by changing insolation, sea level, ice sheets, and greenhouse gas concentrations. Existing reconstructions suggest heterogeneous responses of Indonesian climate to these forcings, highlighting the need for new long records of regional hydrology. We have developed multiproxy datasets from Lake Towuti and nearby lakes that provide continuous, detailed, and reproducible paleoenvironmental records spanning the past 60 kyr BP. Elemental tracers of terrestrial runoff and compound-specific stable isotope records of vegetation show that wet conditions and rainforest ecosystems persisted during Marine Isotope Stage 3 and the Holocene, and were interrupted by severe drying between 33 and 15 kyr BP when high-latitude ice sheets expanded and global temperatures cooled. This chronology of change implies that central Indonesian hydroclimate varies strongly in response to high-latitude climate forcing. New vegetation records from nearby lakes confirm these findings, but suggest the amplitude of glacial-interglacial changes in vegetation were weaker at high altitude, with important implications for the heterogeneity among Indonesian climate reconstructions. New lithologic and trace element records from Lake Towuti further document the significance of climate changes at the MIS3, 2, and 1 boundaries to Lake Towuti's paleolimnology, heat budget, and seasonal mixing. High-resolution seismic reflection data from Lake Towuti constrain the maximum depth of lake level lowstands during MIS2. Hydrological modeling suggests that precipitation was reduced by at least 50% at that time, an amplitude at or above the upper limits of precipitation changes

  8. Quantitative woody cover reconstructions from eastern continental Asia of the last 22 kyr reveal strong regional peculiarities

    Science.gov (United States)

    Tian, Fang; Cao, Xianyong; Dallmeyer, Anne; Ni, Jian; Zhao, Yan; Wang, Yongbo; Herzschuh, Ulrike

    2016-04-01

    We present a calibration-set based on modern pollen and satellite-based Advanced Very High Resolution Radiometer (AVHRR) observations of woody cover (including needleleaved, broadleaved and total tree cover) in eastern continental Asia, which shows good performance under cross-validation with the modern analogue technique (all the coefficients of determination between observed and predicted values are greater than 0.65). The calibration-set is used to reconstruct woody cover from a taxonomically harmonized and temporally standardized fossil pollen dataset (including 274 cores) with 500-year resolution over the last 22 kyr. The spatial range of forest has not noticeably changed in eastern continental Asia during the last 22 kyr, although woody cover has, especially at the margin of the eastern Tibetan Plateau and in the forest-steppe transition area of north-central China. Vegetation was sparse during the LGM in the present forested regions, but woody cover increased markedly at the beginning of the Bølling/Allerød period (B/A; ca. 14.5 ka BP) and again at the beginning of the Holocene (ca. 11.5 ka BP), and is related to the enhanced strength of the East Asian Summer Monsoon. Forest flourished in the mid-Holocene (ca. 8 ka BP) possibly due to favourable climatic conditions. In contrast, cover was stable in southern China (high cover) and arid central Asia (very low cover) throughout the investigated period. Forest cover increased in the north-eastern part of China during the Holocene. Comparisons of these regional pollen-based results with simulated forest cover from runs of a global climate model (for 9, 6 and 0 ka BP (ECHAM5/JSBACH ∼1.125° spatial resolution)) reveal many similarities in temporal change. The Holocene woody cover history of eastern continental Asia is different from that of other regions, likely controlled by different climatic variables, i.e. moisture in eastern continental Asia; temperature in northern Eurasia and North America.

  9. Revision Knee Surgery

    Medline Plus

    Full Text Available Revision Knee Surgery Featuring the Zimmer® NexGen® LCCK System. Zimmer, Inc. Indio, California March 31, 2010 Welcome to this ... surgery, demonstrating the role of the NexGen LCCK Knee Revision System. If we could go to the ...

  10. Revision Knee Surgery

    Medline Plus

    Full Text Available Revision Knee Surgery Featuring the Zimmer® NexGen® LCCK System. Zimmer, Inc. Indio, California March 31, 2010 Welcome ... the role of the NexGen LCCK Knee Revision System. If we could go to the slides, please. ...

  11. A paleomagnetic record of the last 640 kyr from an eastern Mediterranean piston core and a review of geomagnetic excursions in the Brunhes

    Science.gov (United States)

    Oda, H.; Dekkers, M. J.; Langereis, C. G.; Lourens, L.; Heslop, D.

    2004-12-01

    Core KC01 (25.93 m long) was taken from a small ridge on the lower slope of the southern Calabrian Ridge (Pisano Plateau, 36deg15.25'N, 17deg44.34'E, 3643m water depth) during cruise MD69 of the French R/V Marion Dufresne in June-July 1991. The sediment consists of hemipelagic sediments with intercalated sapropel and tephra layers. They form an alternation of grey, greenish, olive-coloured, yellowish, white and beige shades. Sapropel layers are black to dark green. Paleomagnetic samples (6.4 cm3 cubes) were taken from the half split cores and measurements of the natural remanent magnetization was conducted at Utrecht University with a DC SQUID magnetometer (2G Enterprises model 740-R). Stepwise alternating field demagnetization was done at 8-11 steps up to 60-80 mT on each sample. Core KC01 (37.04 m long) was taken as a companion core from core KC01B at the same locality, earlier subjected to magnetostratigraphic work (Langereis et al., 1997). Langereis et al. (1997) established an age model based on the matching of (ghost-)sapropels with insolation minima. They applied the 65degN summer insolation calculated from the astronomical solution La90 (Laskar 1990; Laskar et al., 1993) as target curve and included a time lag of 3-kyr - based on the age difference between the radiocarbon dated midpoint of S1 at 8.5 ka and the insolation maximum at 11.5 ka following the method by Lourens et al. (1996). Lourens (2004) modified the astronomical chronology established by Langereis et al. (1997) and investigated the sapropel chronology on KC01B and KC01 based on high resolution colour correlation with ODP Site 964, which is 1 km away, and constructed an improved age model, which gives a better estimate for these two cores. Langereis et al. (1997) reported four excursions (CR0, CR1, CR2, CR3) with ages of 261, 318, 515, and 573 ka based on the chronology of sapropels on Core KC01B. Lourens (2004) revised the chronology of Core KC01B and redated the excursions as 260, 319, 543

  12. The bioavailable iron in NEEM ice core related to Asian dust records over the past 110 kyr

    Science.gov (United States)

    Xiao, Cunde

    2016-04-01

    The mineral dust can indirectly affect climate by supplying iron and other essential bioavailable elements into ocean. In this study, we present dissolved iron (DFe) and total dissolved iron (TDFe) concentrations in NEEM ice core over the past 110 kyr B.P. The concentrations of bioavailable reactive element Fe have good positive correlation with the concentrations of dust and Ca2+ in NEEM ice core, while show significantly negative relationship with δ18O and CO2 concentration. The ratios of DFe/TDFe are higher in warm periods (Holocene and last interglacial) than in cold period (LGM), indicating the iron-biological pump effect is more significant in warm periods than that in cold periods, this result may provide a new insight for reevaluating the iron hypothesis over glacial/interglacial periods. Our study also shows that the iron flux changes between NEEM ice core and Asian loess records are good consistent with the northern Hemisphere summer insolation. These results emphasize that the variability of Fe flux is most likely driven by solar radiation and dust in northern hemisphere.

  13. Sea ice and millennial-scale climate variability in the Nordic seas 90 kyr ago to present.

    Science.gov (United States)

    Hoff, Ulrike; Rasmussen, Tine L; Stein, Ruediger; Ezat, Mohamed M; Fahl, Kirsten

    2016-01-01

    In the light of rapidly diminishing sea ice cover in the Arctic during the present atmospheric warming, it is imperative to study the distribution of sea ice in the past in relation to rapid climate change. Here we focus on glacial millennial-scale climatic events (Dansgaard/Oeschger events) using the sea ice proxy IP25 in combination with phytoplankton proxy data and quantification of diatom species in a record from the southeast Norwegian Sea. We demonstrate that expansion and retreat of sea ice varies consistently in pace with the rapid climate changes 90 kyr ago to present. Sea ice retreats abruptly at the start of warm interstadials, but spreads rapidly during cooling phases of the interstadials and becomes near perennial and perennial during cold stadials and Heinrich events, respectively. Low-salinity surface water and the sea ice edge spreads to the Greenland-Scotland Ridge, and during the largest Heinrich events, probably far into the Atlantic Ocean. PMID:27456826

  14. Variability of Indian summer monsoon over the past 252 kyr revealed by stalagmite record in Southwest China

    Science.gov (United States)

    Cai, Y.; Fung, I. Y.; Edwards, R.; An, Z.; Cheng, H.; Lee, J.

    2013-12-01

    Multiple proxies obtained from Arabian Sea sediments have revealed the variability of Indian summer Monsoon (ISM) on time scale of 100-105 years. These proxies mainly capture summertime winds over the Arabian Sea and our understanding of Indian summer monsoon precipitation variability; and the relationship between paleo-ISM and paleo East Asia summer monsoon (EASM) lacks precise articulation, however, due to the scarcity of high-resolution precipitation records spanning a glacial-interglacial cycle. Here, we present an absolutely-dated oxygen isotope record from stalagmites in Xiaobailong (XBL) cave, southwestern China, that documents the variability in local precipitation and the ISM for the past 252,000 years. This record is dominated by 23-kyr precessional cycles punctuated by prominent millennial-scale oscillations that are synchronous with Heinrich events in the North Atlantic. It also shows clear glacial-interglacial variations that are consistent with marine and other terrestrial proxies. The distinct glacial-interglacial range in XBL δ18O is larger than that of speleothem records from eastern China. Corroborated with results from an isotope-enabled global climate model, we hypothesize that these dissimilarities may reflect the different responses of ISM and EASM to changes in global circulation and moisture source, in particular those caused by glacial-interglacial sea-land configuration changes as manifested by notable coastline shifts in the Western Pacific and Maritime Continent.

  15. Sediment Cd and Mo accumulation in the oxygen-minimum zone off western Baja California linked to global climate over the past 52 kyr

    Science.gov (United States)

    Dean, W.E.; Zheng, Yen; Ortiz, J.D.; VanGeen, A.

    2006-01-01

    Concentrations of organic carbon (orgC), cadmium (Cd), and molybdenum (Mo) were measured in two sediment cores raised from depths of 430 and 700 m within the oxygen-minimum zone (OMZ) off southern Baja California at a temporal resolution of e10.5 kyr over the past 52 kyr. These records are supplemented with diffuse spectral reflectance (DSR) measurements obtained on board ship soon after collection at a resolution of e10.05 kyr. In the core from 700 m depth, a component extracted from the DSR data and the three geochemical proxies generally vary in concert with each other and over a wide range (4-22% orgC; 1-40 mg/kg Cd; 5-120 mg/kg Mo). Intervals of increased orgC, Cd, and Mo accumulation generally correspond to warm periods recorded in the oxygen-isotopic composition of Greenland ice, with the exception of the Bolling/Allerod which is only weakly expressed off Baja California. Concentrations of the biogenic proxies are higher in the core from 430 m depth, but erratic sediment accumulation before 15 ka precludes dating of the older intervals that are laminated and contain elevated orgC, Cd, and Mo concentrations. The new data provide further evidence of an intimate teleconnection between global climate and the intensity of the OMZ and/or productivity along the western margin of North America. On the basis of a comparison with Cd and Mo records collected elsewhere in the region, we conclude that productivity may actually have varied off southern Baja California by no more than a factor of 2 over the past 52 kyr. Copyright 2006 by the American Geophysical Union.

  16. Age-depth model of the past 630 kyr for Lake Ohrid (FYROM/Albania) based on cyclostratigraphic analysis of downhole gamma ray data

    Science.gov (United States)

    Baumgarten, H.; Wonik, T.; Tanner, D. C.; Francke, A.; Wagner, B.; Zanchetta, G.; Sulpizio, R.; Giaccio, B.; Nomade, S.

    2015-12-01

    Gamma ray (GR) fluctuations and potassium (K) values from downhole logging data obtained in the sediments of Lake Ohrid from 0 to 240 m below lake floor (b.l.f). correlate with fluctuations in δ18O values from the global benthic isotope stack LR04 (Lisiecki and Raymo, 2005). GR and K values are considered a reliable proxy to depict glacial-interglacial cycles, with high clastic input during cold and/or drier periods and high carbonate precipitation during warm and/or humid periods at Lake Ohrid. Spectral analysis was applied to investigate the climate signal and evolution over the length of the borehole. Linking downhole logging data with orbital cycles was used to estimate sedimentation rates and the effect of compaction was compensated for. Sedimentation rates increase on average by 14 % after decompaction of the sediment layers and the mean sedimentation rates shift from 45 cm kyr-1 between 0 and 110 m to 30 cm kyr-1 from 110 to 240 m b.l.f. Tuning of minima and maxima of gamma ray and potassium values versus LR04 extrema, in combination with eight independent tephrostratigraphical tie points, allows establishing of a robust age model for the downhole logging data over the past 630 kyr.

  17. Revision Knee Surgery

    Medline Plus

    Full Text Available ... right. I still like to do a very traditional type of technique on my revisions in which ... middle third of the tubercle, sort of the traditional rotational landmark. I don’t want to overhang ...

  18. Letter of Map Revision

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The National Flood Hazard Layer (NFHL) data incorporates all Digital Flood Insurance Rate Map(DFIRM) databases published by FEMA, and any Letters Of Map Revision...

  19. Atmospheric circulation changes and neoglacial conditions in the Southern Hemisphere mid-latitudes: insights from PMIP2 simulations at 6 kyr

    Energy Technology Data Exchange (ETDEWEB)

    Rojas, Maisa [University of Chile, Department of Geophysics, Santiago (Chile); Moreno, Patricio I. [University of Chile, Department of Ecology, Santiago (Chile)

    2011-07-15

    Glacial geologic studies in the Southern Hemisphere (SH) mid-latitudes (40-54 S) indicate renewed glacial activity in southern South America (Patagonia) and New Zealand's (NZ) South Island starting at {proportional_to}7 kyr, the so-called neoglaciation. Available data indicate that neoglacial advances in these regions occurred during a rising trend in atmospheric CO{sub 2} and CH{sub 4} concentrations, lower-than-present but increasing summer insolation and seasonality contrasts. In this paper we examine the climatological context in which neoglaciations occurred through analysis of the complete Paleoclimate Modelling Inter-comparison Project (PMIP2) database of simulations at 6 kyr for the SH. We observe that the amplitude of the annual insolation cycle in the SH did not change significantly at 6 kyr compared to the pre-industrial values, the largest difference occurring in autumn (MAM, negative anomalies) and spring (SON, positive anomalies). The simulated changes in temperatures over the SH respond to the insolation changes, with a 1-2 month delay over the oceans. This results in a reduced amplitude of the annual cycle of temperature and precipitation over most continental regions, except over Patagonia and NZ, that show a slight increase. In contrast, large-scale circulation features, such as the low and upper level winds and the subtropical anticyclones show an amplified annual cycle, as a direct response to the increased/decreased insolation during the transitional seasons SON/MAM. In the annual mean, there is a small but consistent equatorward shift of the latitude of maximum wind speed of 1-3 over the entire SH, which results in a small increase of wind speed over the South Pacific and Atlantic Oceans north of {proportional_to}50 S and a widespread decline south of 50 S. PMIP2 simulations for 6 kyr, indicate that in the annual mean, the SH mid-latitudes were colder, wetter and with stronger winds north of about 50 S. These conditions are consistent

  20. Hypoxia-driven variations in iron and manganese shuttling in the Baltic Sea over the past 8 kyr

    Science.gov (United States)

    Lenz, Conny; Jilbert, Tom; Conley, Daniel J.; Slomp, Caroline P.

    2015-10-01

    The Baltic Sea has experienced three major intervals of bottom water hypoxia following the intrusion of seawater circa 8 kyr ago. These intervals occurred during the Holocene Thermal Maximum (HTM), Medieval Climate Anomaly (MCA), and during recent decades. Here we show that sequestration of both Fe and Mn in Baltic Sea sediments generally increases with water depth, and we attribute this to shelf-to-basin transfer ("shuttling") of Fe and Mn. Burial of Mn in slope and basin sediments was enhanced following the lake-brackish/marine transition at the beginning of the hypoxic interval during the HTM. During hypoxic intervals, shelf-to-basin transfer of Fe was generally enhanced but that of Mn was reduced. However, intensification of hypoxia within hypoxic intervals led to decreased burial of both Mn and Fe in deep basin sediments. This implies a nonlinearity in shelf Fe release upon expanding hypoxia with initial enhanced Fe release relative to oxic conditions followed by increased retention in shelf sediments, likely in the form of iron sulfide minerals. For Mn, extended hypoxia leads to more limited sequestration as Mn carbonate in deep basin sediments, presumably because of more rapid reduction of Mn oxides formed after inflows and subsequent escape of dissolved Mn to the overlying water. Our Fe records suggest that modern Baltic Sea hypoxia is more widespread than in the past. Furthermore, hypoxia-driven variations in shelf-to-basin transfer of Fe may have impacted the dynamics of P and sulfide in the Baltic Sea thus providing potential feedbacks on the further development of hypoxia.

  1. Temperature variations in Greenland from 10 to 110 kyr b2k derived from the NGRIP ice core

    Science.gov (United States)

    Kindler, Philippe; Leuenberger, Markus; Landais, Amaelle; Guillevic, Myriam

    2013-04-01

    During the last ice age dramatic temperature variations of up to 16 °C took place in Greenland which are now known as Dansgaard-Oeschger-events (DO-events). They most probably originate from the North Atlantic oceanic and atmospheric circulation system and are characterised by an abrupt warming within decades followed by a gradual cooling over hundreds to thousands of years. We have determined local temperature variations for DO-event 1 to 25 in Greenland based on δ15N measurements from the NorthGRIP ice core, corresponding to the period from 10 to 110 kyr b2k. The record is a composite of measurements from two laboratories, Laboratoire des Sciences du Climat et de l'Environnement, Paris (DO 18 to 25) and the Climate and Environmental Physics Division of the Physics Institute of the University of Bern (DO 1 to 17) with new measurements from the beginning of the Holocene to DO 8. Temperature variations were reconstructed by reproducing the measured 15N/14N ratio of air enclosed in ice bubbles by the firn densification and heat diffusion model from Schwander. The reconstruction show temperature amplitudes for the DO-events ranging from 5 to 16 °C, thereby the corresponding rates of change can exceed 0.5 °C/decade. In order get an agreement between measured δ15N, Δdepth and Δage values with their modelled analogues, a lower accumulation rate than the one associated with the used ss09sea06bm1 time scale had to be assumed. We had to reduce the accumulation rate time dependently by 0 to nearly 40% with a mean reduction over the whole time period of 16%. With these adjustments both the Δdepth and the Δage values agree between model and measurements.

  2. Heavy mineral variation in the deep sea sediment of southeastern Arabian Sea during the past 32 kyr

    Indian Academy of Sciences (India)

    Vaseem Akaram; S S Das; R K Rai; Gaurav Mishra

    2015-03-01

    The present study is based on heavy mineral assemblages (HM) of top 104-cm thick section of gravity core SK 221 (Lat. 8°7.12′N; Long. 73°16.38′E and water depth – 2188 m) located near the Chagos–Laccadive Ridge in the southeastern Arabian Sea to evaluate the provenance and paleoenvironmental changes during the last 32 kyr. The biogenic carbonate, acid insoluble residue, magnetic susceptibility, total organic carbon (TOC) and clay based humidity index, i.e., kaolinite/illite ratio are also utilized to correlate with the above paleoenvironmental changes. Ilmenite, garnet, staurolite, pyroxenes, andalusite and zircon are the dominant HM with moderate to low ZTR (zircon-tourmaline-rutile) index indicating instability of the sediments and rapid erosion in the source region. The characteristic HM suggest their mixed sources from the basic igneous, gneisses/granites, high grade metamorphic rocks and sandstones occurring mainly in the western and southwestern India. The temporal variations of HM, AIR (acid insoluble residue), MS (magnetic susceptibility), biogenic carbonate and Corg (TOC) during preglacial and early Holocene suggest intensive weathering, erosion, and transportation of terrigenous detritus from continental region by fluvial processes and summer monsoon led high biogenic productivity, respectively. The convective mixing of waters due to intense winter monsoon resulted in very high biogenic carbonate content during the early stages of glacial period. The HM and associated proxies indicated that the winter monsoons of Heinrich (H3, H2, and H1) and Younger Dryas (YD) events and summer monsoons of Bølling/Allerød (BA) event were not strong enough to bring drastic changes in the above parameters.

  3. Geochemistry of the Black Sea during the last 15 kyr: A protracted evolution of its hydrography and ecology

    Science.gov (United States)

    Piper, D. Z.

    2016-08-01

    The Black Sea is a 2200 m deep anoxic, marine sea connected to the Mediterranean Sea via the Dardanelles Strait, Marmara Sea, and the 3 km wide, 35 m deep Bosphorus Strait. The biogeochemistry of sediment from the Anatolia slope has recorded changes to the hydrography leading up to and following the input of Mediterranean water at ~9.4 ka (103 years B.P.), when global sea level rose to the level of the Bosphorus sill and high-salinity water from the Mediterranean began to spill into the then brackish lake. The water initially mixed little with the lake water but cascaded to the bottom where it remained essentially isolated for ~1.6 kyr, the time required to fill the basin from the bottom up at its present input rate. The accumulation of Mo in the seafloor sediments, a proxy of bottom-water anoxia, increased sharply at ~8.6 ka, when bacterial respiration in the bottom water advanced to SO42- reduction by the oxidation of organic detritus that settled out of the photic zone. Its accumulation remained elevated to ~5.6 ka, when it decreased 60%, only to again increase slightly at ~2.0 ka. The accumulation of Corg, a proxy of primary productivity, increased threefold to fourfold at ~7.8 ka, when upward mixing of the high-salinity bottom water replaced the then thin veneer of the brackish photic zone in less than 50 years. From that time onward, the accumulation of Corg, Mo, and additional trace metals has reflected the hydrography of the basin and Bosphorus Strait, controlled largely by climate.

  4. South Asian summer monsoon variability during the last ˜54 kyrs inferred from surface water salinity and river runoff proxies

    Science.gov (United States)

    Gebregiorgis, D.; Hathorne, E. C.; Sijinkumar, A. V.; Nath, B. Nagender; Nürnberg, D.; Frank, M.

    2016-04-01

    The past variability of the South Asian Monsoon is mostly known from records of wind strength over the Arabian Sea while high-resolution paleorecords from regions of strong monsoon precipitation are still lacking. Here, we present records of past monsoon variability obtained from sediment core SK 168/GC-1, which was collected at the Alcock Seamount complex in the Andaman Sea. We utilize the ecological habitats of different planktic foraminiferal species to reconstruct freshwater-induced stratification based on paired Mg/Ca and δ18O analyses and to estimate seawater δ18O (δ18Osw). The difference between surface and thermocline temperatures (ΔT) and δ18Osw (Δδ18Osw) is used to investigate changes in upper ocean stratification. Additionally, Ba/Ca in G. sacculifer tests is used as a direct proxy for riverine runoff and sea surface salinity (SSS) changes related to monsoon precipitation on land. Our Δδ18Osw time series reveals that upper ocean salinity stratification did not change significantly throughout the last glacial suggesting little influence of NH insolation changes. The strongest increase in temperature gradients between the mixed layer and the thermocline is recorded for the mid-Holocene and indicate the presence of a significantly shallower thermocline. In line with previous work, the δ18Osw and Ba/Ca records demonstrate that monsoon climate during the LGM was characterized by a significantly weaker southwest monsoon circulation and strongly reduced runoff. Based on our data the South Asian Summer Monsoon (SAM) over the Irrawaddyy strengthened gradually after the LGM beginning at ∼18 ka. This is some 3 kyrs before an increase of the Ba/Ca record from the Arabian Sea and indicates that South Asian Monsoon climate dynamics are more complex than the simple N-S displacement of the ITCZ as generally described for other regions. Minimum δ18Osw values recorded during the mid-Holocene are in phase with Ba/Ca marking a stronger monsoon precipitation

  5. Distal deltaic deposits document hydrological variability during the past 30 kyrBP in Lake Towuti, Indonesia

    Science.gov (United States)

    Vogel, Hendrik; Russell, James M.; Yudawati Cahyarini, Sri; Bijaksana, Satria; Wattrus, Nigel; Rethemeyer, Janet; Melles, Martin

    2014-05-01

    Lake Towuti (2.75°S, 121.5°E; 318 m a.s.l.) is a, 560 km2, 200-m deep tectonic lake at the downstream end of the Malili lake system, a set of five, ancient (1-2 MYr) tectonic lakes in central Sulawesi, Indonesia. The Mahalona River constitutes the largest tributary and connects Lake Towuti with the two upstream lakes Matano and Mahalona. The Mahalona River Delta is prograding into the >200m deep northern basin of Lake Towuti. Tracing past variability of Mahalona River discharge is therefore an important puzzle piece for the understanding of depositional dynamics in Lake Towuti as well as catchment hydrology and hydrological connectivity between the Malili Lakes. Distal deltaic deposits can help identifying past variability in river discharge and delta dynamics. Using highly resolved seismic reflection data collected between 2007-2013 we identified a stack of acoustically laminated reflections in Towuti's extensive and morphologically flat deep northern basin. For detailed characterization of these acoustic features we collected a c. 20m long piston core from the basin centre at 200 m water depth reaching back to c. 30 kyrBP. Sediments in this piston core consist to 75% of mass wasting deposits (MWD) of variable thickness that are intercalated with pelagic muds (25%). MWD appear mostly homogenous (silt- to finesand-sized siliciclastics with high amounts of terrestrial plant macrofossils) with only thin (1-3 cm) basal sand layers and clay caps (Pelagic muds appear as thin to medium bedded slightly silty clays that are clearly distinguishable from MWD. The position of MWD identified in our piston core nicely correlates with acoustically laminated reflections identified in seismic profiles crossing the coring site. Based on these combined sedimentological and acoustic datasets we interpret MWD in Towuti's northern basin as distal deltaic deposits originating from the Mahalona River Delta. Frequencies and percentages (in terms of lithofacies contribution) of distal

  6. Multi-proxy sedimentary record from Lake Ghirla (N-Italy) reveals hydro-climatic variations and periods of anthropogenic activities during the past 13 kyrs

    Science.gov (United States)

    Wirth, Stefanie B.; Gilli, Adrian; Sessions, Alex L.

    2016-04-01

    Lake Ghirla is a small lake that lies in the southern foothills of the Central Alps near the Swiss-Italian border. Climatically, the region is influenced by North Atlantic and Mediterranean weather systems and is frequently affected by severe storm tracks causing heavy precipitation. The catchment with Permian granites and gneisses contains Pb in amounts significant for mining as well as less important concentrations of Cu, As and U. This sensitive setting makes Lake Ghirla a promising site to reconstruct hydro-climatic variations and to track human activity by means of elevated heavy metal concentrations in the lake sediments. The recovered sediment core comprises the entire Younger Dryas-Holocene time period and was analyzed for (i) sedimentological changes to identify flood deposits, for (ii) the hydrogen isotopic composition of terrestrial plant waxes (plant-wax D/H) to constrain hydro-climatic changes, and for (iii) variations of the elemental composition (XRF core scanning, ICP-MS) to understand anthropogenic impacts. During the past 13 kyrs, we observe a high variability of floods with peak periods appearing at ~11, 10.6-8.2, 6-4.9, 2.8-2.7, 2.6-2.4, 1.2-1 and 0.4-0.1 (LIA) cal kyr BP. From a hydro-climatic perspective, the most remarkable result from the plant-wax D/H data is that the Younger Dryas is characterized by no significant change and that the 2.8-2.7 kyr BP and LIA intervals show an increase of plant-wax D/H values. Hence, during these three cool climatic periods temperature effects cannot be solely responsible for plant-wax D/H variation. The southward migration of the westerly storm tracks above the North Atlantic due to climate cooling must have led to a more southern and thus isotopically enriched moisture source for the southern Alps. This moisture-source change likely counter-balanced or even over-rode the temperature-driven isotope effect. Increased sedimentary Cu concentrations at 3.8-3.3 kyr BP are the first evidence for the presence of

  7. Reconstruction of sea surface temperature variations in the Arabian Sea over the last 23 kyr using organic proxies (TEX86 and UK'37)

    OpenAIRE

    C. Huguet; Kim, J.-H.; Sinninghe Damsté, J.S.; Schouten, S.

    2006-01-01

    Two sediment cores from the western Arabian Sea, NIOP905 and 74KL, were analyzed to determine sea surface temperature (SST) variations over the last 23 kyr. Two organic molecular SST proxies were used, the well-established UK'37 based on long-chain unsaturated ketones synthesized by haptophyte algae and the newly proposed TEX86 derived from the membrane lipids of Crenarchaeota. Comparison of NIOP905 and 74KL core top data with present-day SST (0–10 m) values indicates that both proxies yield ...

  8. Reconstruction of sea surface temperature variations in the Arabian Sea over the last 23 kyr using organic proxies (TEX86 and U37K′)

    OpenAIRE

    Huguet, Carme; Kim, Jung-Hyun; Sinninghe Damsté, Jaap S.; Schouten, Stefan

    2006-01-01

    Two sediment cores from the western Arabian Sea, NIOP905 and 74KL, were analyzed to determine sea surface temperature (SST) variations over the last 23 kyr. Two organic molecular SST proxies were used, the well-established U37K′ based on long-chain unsaturated ketones synthesized by haptophyte algae and the newly proposed TEX86 derived from the membrane lipids of Crenarchaeota. Comparison of NIOP905 and 74KL core top data with present-day SST (0–10 m) values indicates that both proxies yield ...

  9. Evidence for Mid-latitude Lake-level Response to Millennial and Milankovitch Forcing: The Past 65 kyr at Mono Lake, CA

    Science.gov (United States)

    Zimmerman, S. H.; Hemming, S. R.; Hemming, N. G.; Pearl, C.; Hartin, C.

    2007-12-01

    Mono Lake, California (38°N, 119°W) lies in the western Great Basin in the rain shadow of the Sierra Nevada, and preserves high-elevation strandlines indicating that lake level was much higher in the past. Comparison of stratigraphy-based relative lake level with geochemical records from three sites around the lake (overlapping between 40-32 ka), reveals high carbonate fluxes at times of high lake level on precessional (20-kyr) time-scales. Although absolute values are different in different locations representing slightly different paleoenvironmental settings, the timing and relative amplitude of changes are similar on orbital as well as millennial time-scales. Within the established regional 100-kyr pattern of wet glacials-dry interglacials, we find that during the last glaciation (Marine Isotope Stages (MIS) 4-3-2) times of high spring insolation were generally wetter, represented by lacustrine silts rather than sand facies and greater carbonate flux to the deep-lake sediments. This interval is also characterized by high-amplitude variability. Age model errors of ~1 kyr or less during MIS 3 allow correlation of sharp increases in carbonate deposition with Dansgaard-Oeschger warmings in Greenland. If the high carbonate-high lake relationship holds at millennial time-scales, this would indicate increases in lake level coeval with warming, opposite to the 100-kyr regional pattern. Alternatively, carbonate precipitation may be triggered by lake level peaking and beginning to drop, suggesting that lake level began to fall about the time of Greenland warming. Regardless, the correspondence in phasing between Mono Lake and Greenland, also demonstrated in the nearby Santa Barbara Basin, suggests that Mono Lake responded rapidly to the atmosphere-ocean changes invoked to explain the global nature of the D-O events. The suppression of this variability during times of low spring insolation may be due to a reduced sensitivity of the recorder, and we are looking for

  10. Man the Fat Hunter: The Demise of Homo erectus and the Emergence of a New Hominin Lineage in the Middle Pleistocene (ca. 400 kyr) Levant

    OpenAIRE

    Miki Ben-Dor; Avi Gopher; Israel Hershkovitz; Ran Barkai

    2011-01-01

    The worldwide association of H. erectus with elephants is well documented and so is the preference of humans for fat as a source of energy. We show that rather than a matter of preference, H. erectus in the Levant was dependent on both elephants and fat for his survival. The disappearance of elephants from the Levant some 400 kyr ago coincides with the appearance of a new and innovative local cultural complex – the Levantine Acheulo-Yabrudian and, as is evident from teeth recently found in th...

  11. An 80 kyr-long continuous speleothem record from Dim Cave, SW Turkey with paleoclimatic implications for the Eastern Mediterranean

    OpenAIRE

    Ezgi Ünal-İmer; James Shulmeister; Jian-Xin Zhao; Tonguç Uysal, I.; Yue-Xing Feng; Ai Duc Nguyen; Galip Yüce

    2015-01-01

    Speleothem-based stable isotope records are valuable in sub-humid and semi-arid settings where many other terrestrial climate proxies are fragmentary. The Eastern Mediterranean is one such region. Here we present an 80-kyr-long precisely-dated (by U-series) and high-resolution oxygen (δ18O) and carbon (δ13C) records from Dim Cave (~36°N) in SW Turkey. The glacial-interglacial δ18O variations in the Dim Cave speleothem are best explained in terms of changes in the trajectories of winter wester...

  12. Revising and editing for translators

    CERN Document Server

    Mossop, Brian

    2014-01-01

    Revising and Editing for Translators provides guidance and learning materials for translation students learning to edit texts written by others, and professional translators wishing to improve their self-revision ability or learning to revise the work of others. Editing is understood as making corrections and improvements to texts, with particular attention to tailoring them to the given readership. Revising is this same task applied to draft translations. The linguistic work of editors and revisers is related to the professional situations in which they work. Mossop offers in-depth coverage of a wide range of topics, including copyediting, style editing, structural editing, checking for consistency, revising procedures and principles, and translation quality assessment. This third edition provides extended coverage of computer aids for revisers, and of the different degrees of revision suited to different texts. The inclusion of suggested activities and exercises, numerous real-world examples, a proposed gra...

  13. Grain-size based sea-level reconstruction in the south Bohai Sea during the past 135 kyr

    Science.gov (United States)

    Yi, Liang; Chen, Yanping

    2013-04-01

    marine surface and core samples, and to quantitatively reconstruct sea-level variation since the late Pleistocene in the south Bohai Sea, China. New insights into regional relative sea-level changes since the late Pleistocene are obtained (Yi et al., 2012): (1) The grain size of surface and core samples can be mathematically partitioned using the Weibull distribution into four components. These four components with differing modal sizes and percentages could be interpreted as a long-term suspension component, which only settles under low turbulence conditions, sortable silt and very fine sand components transported by suspension during greater turbulence and bedload transport component, respectively. (2) Through regression and rigorous verification techniques, the reference water level could be reconstructed from sediment grain size. The reconstruction quantitatively extends the regional relative sea-level history to the late Pleistocene, providing a comparatively long dataset to evaluate regional sea-level variability. (3) We find no evidence of a sea-level high stand during MIS3 but rather a substantial regression during 70-30 cal kyr BP and potentially exposed land during 38-20 cal kyr BP. These results for the south Bohai Sea are in good agreement with published global sea-level records for the late Pleistocene, implying similarities between local and global sea-level patterns. Therefore, it is concluded that grain-size based sea-level reconstruction provide results that are comparable to other reconstruction methods and demonstrates great potential application for future works. (The data was shared on http://hurricane.ncdc.noaa.gov/) References Chappell, J., Omura, A., Esat, T., McCulloch, M., Pandolfi, J., Ota, Y., Pillans, B., 1996. Reconciliation of late Quaternary sea levels derived from coral terraces at Huon Peninsula with deep sea oxygen isotope records. Earth and Planetary Science Letters 141, 227-236. Chappell, J., Shackleton, N.J., 1986. Oxygen isotopes

  14. Revision without ordinals

    NARCIS (Netherlands)

    Rivello, Edoardo

    2013-01-01

    We show that Herzberger’s and Gupta’s revision theories of truth can be recast in purely inductive terms, without any appeal neither to the transfinite ordinal numbers nor to the axiom of Choice. The result is presented in an abstract and general setting, emphasising both its validity for a wide ran

  15. Revision of the Sarcospermataceae

    NARCIS (Netherlands)

    Lam, H.J.; Varossieau, W.W.

    1938-01-01

    The genus Sarcosperma was excluded from the Sapotaceae by the first-named writer in 1925, the group being considered as of family rank. In 1926 the same author published a concise and fragmentary revision of the monotypic order, in which two new Malaysian species were described. The continental spec

  16. Code A1 Revised

    CERN Multimedia

    SC Secretariat

    2004-01-01

    Please note that the revised safety code A1 entitled 'MEDICAL CODE' is available on the web at the following url: https://edms.cern.ch/document/335476/last_released Paper copies can also be obtained from the SC Secretariat, e-mail : sc.secretariat@cern.ch SC Secretariat

  17. Belief and Its Revision

    NARCIS (Netherlands)

    Bewersdorf, Benjamin

    2013-01-01

    The role of experience for belief revision is seldom explicitly discussed. This is surprising as it seems obvious that experiences play a major role for most of our belief changes. In this work, the two most plausible views on the role of experience for belief change are investigated: the view that

  18. A 300 kyr Record of Geomagnetic Excursions and Paleointensity From the Irminger Basin: Candidates for Mono Lake, Laschamp, Iceland Basin, Jamaica and Pringle Falls?

    Science.gov (United States)

    Channell, J. E.

    2004-12-01

    Sediments recovered at ODP Site 919, off east Greenland, record geomagnetic directional excursions at 33 ka and 40 ka (Mono Lake and Laschamp), and at 187 ka (Iceland Basin), 208 ka (Jamaica?) and at 220 ka (Pringle Falls). U-channel records are augmented by 1-cm discrete samples collected back-to-back alongside the u-channel troughs. Deconvolution of the u-channel records yields records that can be closely matched to the discrete sample data. The age-model based on planktic oxygen isotope data (St. John et al., Marine Geology, in press) is consistent with the relative paleointensity record and the recognition of Ash Layer 2 (55 ka). The results indicate that the Mono Lake and Laschamp excursions, and the Iceland Basin and Pringle Falls (and perhaps also Jamaica), are distinct excursions, rarely recorded together in individual stratigraphic sections. Why are they recorded at ODP Site 919? Mean sedimentation rates are 22 cm/kyr in MIS 3 where Mono Lake/Laschamp are recorded, but sedimentation rates do not appear to be especially high in MIS 7 (13 cm/kyr) where candidates for Iceland Basin/Jamaica/Pringle Falls are recorded.

  19. Man the Fat Hunter: The Demise of Homo erectus and the Emergence of a New Hominin Lineage in the Middle Pleistocene (ca. 400 kyr) Levant

    Science.gov (United States)

    Ben-Dor, Miki; Gopher, Avi; Hershkovitz, Israel; Barkai, Ran

    2011-01-01

    The worldwide association of H. erectus with elephants is well documented and so is the preference of humans for fat as a source of energy. We show that rather than a matter of preference, H. erectus in the Levant was dependent on both elephants and fat for his survival. The disappearance of elephants from the Levant some 400 kyr ago coincides with the appearance of a new and innovative local cultural complex – the Levantine Acheulo-Yabrudian and, as is evident from teeth recently found in the Acheulo-Yabrudian 400-200 kyr site of Qesem Cave, the replacement of H. erectus by a new hominin. We employ a bio-energetic model to present a hypothesis that the disappearance of the elephants, which created a need to hunt an increased number of smaller and faster animals while maintaining an adequate fat content in the diet, was the evolutionary drive behind the emergence of the lighter, more agile, and cognitively capable hominins. Qesem Cave thus provides a rare opportunity to study the mechanisms that underlie the emergence of our post-erectus ancestors, the fat hunters. PMID:22174868

  20. Man the fat hunter: the demise of Homo erectus and the emergence of a new hominin lineage in the Middle Pleistocene (ca. 400 kyr Levant.

    Directory of Open Access Journals (Sweden)

    Miki Ben-Dor

    Full Text Available The worldwide association of H. erectus with elephants is well documented and so is the preference of humans for fat as a source of energy. We show that rather than a matter of preference, H. erectus in the Levant was dependent on both elephants and fat for his survival. The disappearance of elephants from the Levant some 400 kyr ago coincides with the appearance of a new and innovative local cultural complex--the Levantine Acheulo-Yabrudian and, as is evident from teeth recently found in the Acheulo-Yabrudian 400-200 kyr site of Qesem Cave, the replacement of H. erectus by a new hominin. We employ a bio-energetic model to present a hypothesis that the disappearance of the elephants, which created a need to hunt an increased number of smaller and faster animals while maintaining an adequate fat content in the diet, was the evolutionary drive behind the emergence of the lighter, more agile, and cognitively capable hominins. Qesem Cave thus provides a rare opportunity to study the mechanisms that underlie the emergence of our post-erectus ancestors, the fat hunters.

  1. Formulas of Revised MRP

    OpenAIRE

    Alfredo Bregni; Marco D’Avino; Valerio De Simone; Massimiliano M. Schiraldi

    2013-01-01

    Information sharing among supply chain echelons is now an acquired result. As a consequence, most of the traditional techniques and procedures in production management must be revised and updated, exploiting the opportunities provided by new technologies. This paper presents an improved version of Material Requirement Planning procedure, which assumes information sharing capabilities and permits the creation of new business opportunities. In Orlickyʹs MRP, orders are computed considering t...

  2. Terrestrial environmental changes around the Gulf of Aden over the last 210 kyr deduced from the sediment n-alkane record: Implications for the dispersal of Homo sapiens

    Science.gov (United States)

    Isaji, Yuta; Kawahata, Hodaka; Ohkouchi, Naohiko; Murayama, Masafumi; Tamaki, Kensaku

    2015-03-01

    We analyzed long-chain (C25-C36) n-alkanes and pollen grains in sediments from the Gulf of Aden covering the last 212 kyr to reconstruct the surrounding terrestrial environment, a critical region for the dispersal of Homo sapiens. Substantial increases in the flux of n-alkanes during 200-185, 120-95, and 70-50 ka were interpreted to indicate enhanced vegetation biomass in the Arabian Peninsula and the northern part of the Horn of Africa or increase in lithogenic material inputs. Periods of enhanced n-alkane flux occurred during or immediately after pluvial episodes, indicating that the increased precipitation may have induced substantially enhanced vegetation biomass, creating favorable conditions for Homo sapiens. Additionally, vegetation may have increased due to moderate precipitation unrecorded by speleothems or in accordance with the lowering of sea level, indicating that the dispersal might have been possible even after the shift to an arid environment indicated by the speleothems.

  3. MARKOWITZ STRATEGIES REVISED

    Institute of Scientific and Technical Information of China (English)

    Yan Jia-an; Zhou Xunyu

    2009-01-01

    Continuous-time Markowitz's mean-variance efficient strategies are modified by parameterizing a critical quantity. It is shown that these parameterized Markowitz strategies could reach the original mean target with arbitrarily high probabilities. This, in turn, motivates the introduction of certain stopped strategies where stock holdings are liquidated whenever the parameterized Markowitz strategies reach the present value of the mean target. The risk aspect of the revised Markowitz strategies are examined via expected discounted loss from the initial budget. A new portfolio selection model is suggested based on the results of the paper.

  4. Development of coccolithophore-based transfer functions in the Western Mediterranean Sea: a sea surface salinity reconstruction for the last 15.5 kyr

    Directory of Open Access Journals (Sweden)

    B. Ausín

    2015-08-01

    Full Text Available A new dataset of 88 marine surface sediment samples and related oceanic environmental variables (temperature, salinity, chlorophyll a, oxygen, etc. was studied to quantify the relationship between assemblages of coccolithophore species and modern environmental conditions in the Western Mediterranean Sea and the Atlantic Ocean, west of the Strait of Gibraltar. Multivariate statistical analyses revealed that coccolithophore species were primarily related to the sea surface salinity (SSS gradient, which explains an independent and significant proportion of variance in the coccolithophore data. A quantitative coccolithophore-based transfer function to estimate SSS was developed using the Modern Analog Technique (MAT and weighted-averaging partial-least square regression (WA-PLS. The bootstrapped regression coefficient (R2boot was 0.85MAT and 0.80WA-PLS, with root-mean square error of prediction (RMSEP of 0.29MAT and 0.30WA-PLS (psu. The resulting transfer function was applied to fossil coccolithophore assemblages in the highly resolved (∼ 65 yr sediment core CEUTA10PC08 from the Alboran Sea (Western Mediterranean in order to reconstruct SSS for the last 25 kyr. The reliability of the reconstruction was evaluated by assessing the degree of similarity between fossil and modern coccolithophore assemblage, and comparison of reconstruction with fossil ordination scores. Analogs were poor for the stadials associated with Heinrich Event 2 and 1 and part of the Last Glacial Maximum. Good analogs indicate more reliable reconstruction of the SSS for the last 15.5 kyr. During this period, several millennial and centennial SSS changes were observed and associated with variations in the Atlantic Water entering the Alboran Sea, sea-level oscillations, and arid or humid atmospheric conditions in the Western Mediterranean.

  5. A stacked record of relative geomagnetic paleointensity for the past 270 kyr from the western continental rise of the Antarctic Peninsula

    Science.gov (United States)

    Macrì, Patrizia; Sagnotti, Leonardo; Lucchi, Renata Giulia; Rebesco, Michele

    2006-11-01

    Paleomagnetic and rock magnetic investigations were carried out on four gravity cores recovered from the western continental rise of the Antarctic Peninsula during the SEDANO II cruise of RV OGS-Explora. The studied cores, each about 6.5 m-long, were collected at a depth of 3700-4100 m below the sea level, on the distal gentle side of sediment Drift 7, and consist of very fine-grained sediments spanning through various glacial-interglacial cycles. Detailed analysis of the paleomagnetic and rock magnetic data allowed to reconstruct relative paleointensity (RPI) records (NRM20 mT/ARM20 mT) for each core. We established a refined age model for the studied sequences by correlating individual SEDANO RPI curves to the global RPI stack SINT-800 [Y. Guyodo, J.-P. Valet, Global changes in intensity of the Earth's magnetic field during the past 800 kyr, Nature 399 (1999) 249-252]. The individual normalized SEDANO RPI records are in mutual close agreement; they were thus merged in a RPI stacking curve spanning the last 270 kyr and showing a low standard deviation. This study also points out that RPI records may provide a viable tool to date otherwise difficult-to-date sedimentary sequences, such as those deposited along peri-Antarctic margins. The new RPI chronology indicates that the sampled sedimentary sequence is younger than previously thought and allows a new high-resolution correlation to oxygen isotope stages. Furthermore, we recognized variations in the rock magnetic parameters that appear to be climatically-driven, with changes in the relative proportion of two magnetic mineral populations with distinct coercivities. Rock magnetic and lithological trends observed in the SEDANO cores indicate that during the climatic cycles of the Late Pleistocene this sector of the peri-Antarctic margin was subjected to subtle, yet identifiable, environmental changes, confirming a relatively higher instability of the West Antarctic ice sheet with respect to the East Antarctic

  6. 200 kyrs of sediment deposition in the coastal lowlands of Bol'shoy Lyakhovsky - a record of deglaciation of the New Siberian Islands?

    Science.gov (United States)

    Schwamborn, Georg; Schirrmeister, Lutz; Wetterich, Sebastian; Fuchs, Margret; Meyer, Hanno; Siegert, Christine

    2016-04-01

    Bol'shoy Lyakhovsky, the southernmost island of the New Siberian Archipelago, holds the longest record of palaeoenvironmental history in the North Siberian Arctic. It stretches back to ~200 kyr before present. Next to palaeosols and floodplain deposits it includes prominent thermokarst deposits from the Last Interglacial and Yedoma (Ice Complex) sections from the Last Glacial. Yet, it is unknown, whether or not the depositional history of the area is affected by the deglaciation of the northern part of the New Siberian Archipelago. Potentially, it could give insights into the break-up of the proposed MIS 6 ice sheet located on the East Siberian Sea shelf. Polymodal particle size distributions in the sediment record suggest that more than one transport mechanism drove sediment accumulation from more than one source. From a cryo-sedimentological data set we focus on the mineral composition (63-125 μm fraction) to determine the provenance of the deposits and to identify possible changes of transport pathways. Complementary, we use pore ice hydrochemical data to track changes of the weathering solution preserved in permafrost. Presumably, the both complement each other, since the weathering products largely depend on the mineral composition. We conclude that the observed trends in the heavy mineral and pore ice chemical data of the frozen ground record reflect short-distance material transport from weathered bedrock to the depositional area. In this sense no portion of the 200 kyr record seems to be affected by the presumed MIS 6 ice sheet break-up, which at that time happened about 250 km north of the study site.

  7. Revised Rules for Concrete Bridges

    DEFF Research Database (Denmark)

    Thoft-Christensen, Palle; Jensen, F. M.; Middleton, C.;

    This paper is based on research performed for the Highway Agency, London, UK under the project DPU/9/44 "Revision of Bridge Assessment Rules Based on Whole Life Performance: Concrete Bridges" It contains details of a methodology which can be used to generate Whole Life (WL) reliability profiles....... These WL reliability profiles may be used to establish revised rules for Concrete Bridges....

  8. Surgical scar revision: An overview

    Directory of Open Access Journals (Sweden)

    Shilpa Garg

    2014-01-01

    Full Text Available Scar formation is an inevitable consequence of wound healing from either a traumatic or a surgical intervention. The aesthetic appearance of a scar is the most important criteria to judge the surgical outcome. An understanding of the anatomy and wound healing along with experience, meticulous planning and technique can reduce complications and improve the surgical outcome. Scar revision does not erase a scar but helps to make it less noticeable and more acceptable. Both surgical and non-surgical techniques, used either alone or in combination can be used for revising a scar. In planning a scar revision surgeon should decide on when to act and the type of technique to use for scar revision to get an aesthetically pleasing outcome. This review article provides overview of methods applied for facial scar revision. This predominantly covers surgical methods.

  9. Philippines revises power plans

    Energy Technology Data Exchange (ETDEWEB)

    Hayes, D.

    1988-02-01

    Following an unexpected surge in electricity demand the Philippines has revised its medium term power development programme. The sharp increase in electricity consumption follows three years of slack demand due to civil disturbances before the end of the Macros administration and the election of Corazon Aquino as President in 1986. Originally, the Aquino government's medium term power development plans called for about 500MW of generating capacity to be installed between 1986 and 1992. The three proposed plants were scheduled for commissioning in 1991 and 1992. However, a spurt in power demand growth during the past nine months has caused concern among industrialists that power shortages could occur by the end of the decade. So additional capacity will be installed to prevent an anticipated shortfall in electricity supplies by the early 1990s.

  10. Hip Revision with Cup Removal System and Revision Shell

    Medline Plus

    Full Text Available The Zimmer® Explant® Cup Removal System and Trabecular Metal™ Revision Shell You must have Javascript enabled in your web browser. View Program Transcript Click Here to view ...

  11. Hydrological and thermal changes along the last 2.7 kyr in the central-western Mediterranean based on a multi-archive approach: speleothem and marine sediments

    Science.gov (United States)

    Cisneros, Mercè; Cacho, Isabel; Fornós, Joan J.; Moreno, Ana; Stoll, Heather; Edwards, Larry; Cheng, Hai; Frigola, Jaime

    2016-04-01

    Climatic conditions over the last 2.7 kyr are reconstructed in base to six speleothems from a cave in Mallorca and a group of sediment cores from the Menorca Rise. Speleothem records provide a solid chronology in base to high resolution U/Th dating. Both δ 13C and particularly δ 18O records show pronounced oscillations related to pre-roman times as the Dark Middle Ages, the Medieval Climate Anomaly and the Little Ice Age. The geochemical proxies from the six studied speleothems have been stacked in a unique record, which provides decadal-multidecadal resolution. In parallel, Sea Surface Temperature (SST) conditions have been reconstructed in base to Globigerina bulloides-Mg/Ca ratios from a group of multicore records, and they have been combined with δ18O data to reconstruct changes in the evaporation-precipitation ratio of the basin. These records have also been stacked in a single anomaly curve after the accurate construction of robust multi-proxy chronologies (Cisneros et al., under evaluation). The comparison of the marine and speleothem records reveal the occurrence of synchronous changes in both SST and humidity conditions over land along the last 2.7 kyr, although the relationship of these two climatic variables changed along the different climatic events. These results support that the driest conditions occurred during part of the Roma Classic Period and also during the Medieval Climate Anomaly when climate conditions were mostly warm, but also during the second part of the Little Ice Age when cold conditions dominated. This combined land-sea proxy approach offers a powerful tool to reconstruct past climate variability with highly precise chronologies. REFERENCES: M. Cisneros, I. Cacho, J. Frigola, M. Canals, P. Masqué, B. Martrat, F. Lirer, and G. Margaritelli. Sea surface temperature variability in the central-western Mediterranean Sea during the last 2700 years: a multi-proxy and multi-record approach. Submitted on 28 Sep 2015 for open discussion on

  12. EPR first responders revision test

    International Nuclear Information System (INIS)

    In this revision test evaluates the acquired knowledge in case of radiological emergency confront. Actions to be taken in relation to people, equipment and the environment. Doses, radioactive sources, pollution

  13. Circumcision revision in male children

    Directory of Open Access Journals (Sweden)

    Mohammed A. Al-Ghazo

    2006-08-01

    Full Text Available OBJECTIVE: To determine indications for circumcision revision and to identify the specialty of the person who performed unsatisfactory primary circumcision. MATERIALS AND METHODS: The authors reviewed medical records of 52 cases that underwent circumcision revision over a 6-year period (1998 to 2004. Sleeve surgical technique was used for revision in patients with redundant foreskin or concealed penis, penoplasty for partial or complete degloving of the penis and meatotomy for external meatal stenosis. The mean age of children was 32 months (range 6 months to 9 years. RESULTS: Most of unsatisfactory primary circumcisions (86.7% were performed by laymen. All patients who underwent circumcision revision had good to excellent cosmetic results. CONCLUSION: Primary circumcision performed by laymen carry a high complication rate and serious complications may occur. A period of training and direct supervision by physicians is required before allowing laymen to perform circumcision independently.

  14. A revision of Neonauclea (Rubiaceae)

    NARCIS (Netherlands)

    Ridsdale, C.E.

    1989-01-01

    An illustrated revision of the 65 species of the genus Neonauclea (Rubiaceae-Naucleeae) with a key to all species. The 61 Malesian species are treated in full, 28 new species are described and 5 new combinations are made.

  15. Revision du Genre Aseraggodes Kaup

    NARCIS (Netherlands)

    Chabanaud, P.

    1930-01-01

    Le présent travail comprend la définition du genre Aseraggodes Kaup et la revision, sous forme d'une clef dichotomique, de toutes les espèces qui le composent, revision établie d'après les types eux-mêmes de ces espèces. Ce genre Aseraggodes appartient à la famille des Soleidae et à la sousfamille d

  16. A 500 kyr record of global sea level oscillations in the Gulf of Lion, Mediterranean Sea: new insights into MIS 3 sea level variability

    Directory of Open Access Journals (Sweden)

    J. Frigola

    2011-12-01

    Full Text Available Borehole PRGL1-4 drilled in the upper slope of the Gulf of Lion provides an exceptional record to investigate the impact of Late Pleistocene orbitally-driven glacio-eustatic sea level oscillations on the sedimentary outbuilding of a river fed continental margin. High-resolution grain-size and geochemical records supported by oxygen isotope chronostratigraphy allow reinterpreting the last 500 ka upper slope seismostratigraphy of the Gulf of Lion which consists of five main sequences stacked during the sea level lowering phases of the last five glacial-interglacial 100-kyr cycles. The high sensitivity to sea level oscillations of the grain-size record along the borehole, favoured by the large width of the Gulf of Lion continental shelf, demonstrates that sea level driven changes in accommodation space over the shelf are able to cyclically modify the depositional mode of the entire margin. PRGL1-4 data also illustrate the imprint of sea level oscillations at millennial scale, as shown for Marine Isotopic Stage 3, and provide unambiguous evidence of relative high sea levels at the onset of each Dansgaard-Oeschger Greenland warm interstadial. The PRGL1-4 grain-size record represents the first evidence ever for a one-to-one coupling of millennial-scale sea level oscillations associated with each Dansgaard-Oeschger cycle.

  17. A 500 kyr record of global sea-level oscillations in the Gulf of Lion, Mediterranean Sea: new insights into MIS 3 sea-level variability

    Directory of Open Access Journals (Sweden)

    J. Frigola

    2012-06-01

    Full Text Available Borehole PRGL1-4 drilled in the upper slope of the Gulf of Lion provides an exceptional record to investigate the impact of late Pleistocene orbitally-driven glacio-eustatic sea-level oscillations on the sedimentary outbuilding of a river fed continental margin. High-resolution grain-size and geochemical records supported by oxygen isotope chronostratigraphy allow reinterpreting the last 500 ka upper slope seismostratigraphy of the Gulf of Lion. Five main sequences, stacked during the sea-level lowering phases of the last five glacial-interglacial 100-kyr cycles, form the upper stratigraphic outbuilding of the continental margin. The high sensitivity of the grain-size record down the borehole to sea-level oscillations can be explained by the great width of the Gulf of Lion continental shelf. Sea level driven changes in accommodation space over the shelf cyclically modified the depositional mode of the entire margin. PRGL1-4 data also illustrate the imprint of sea-level oscillations at millennial time-scale, as shown for Marine Isotopic Stage 3, and provide unambiguous evidence of relative high sea-levels at the onset of each Dansgaard-Oeschger Greenland warm interstadial. The PRGL1-4 grain-size record represents the first evidence for a one-to-one coupling of millennial time-scale sea-level oscillations associated with each Dansgaard-Oeschger cycle.

  18. Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr

    Directory of Open Access Journals (Sweden)

    J.-R. Riethdorf

    2012-12-01

    Full Text Available We used piston cores recovered in the western Bering Sea to reconstruct millennial-scale changes in marine productivity and terrigenous matter supply over the past ~180 kyr. Based on a geochemical multi-proxy approach our results indicate closely interacting processes controlling marine productivity and terrigenous matter supply comparable to the situation in the Okhotsk Sea. Overall, terrigenous inputs were high, whereas primary production was low. Minor increases in marine productivity occurred during warm intervals of stage 5 and interstadials, but pronounced maxima were recorded during interglacials and Termination I. Seasonal sea-ice is suggested to act as the dominant transport agent for terrigenous material. From our results we propose glacial, deglacial, and interglacial scenarios for environmental change in the Bering Sea. These changes seem to be primarily controlled by insolation and sea-level forcing which affect the strength of atmospheric pressure systems and sea-ice growth. The opening history of the Bering Strait and the Aleutian passes is considered to have had an additional impact. Sea-ice dynamics are thought to drive changes in surface productivity, terrigenous inputs, and upper-ocean stratification. High-resolution core logging data (color b*, XRF scans strongly correspond to the Dansgaard–Oeschger climate variability registered in the NGRIP ice core and support an atmospheric coupling mechanism of Northern Hemisphere climates.

  19. Revision of infected knee arthroplasties in Denmark.

    Science.gov (United States)

    Lindberg-Larsen, Martin; Jørgensen, Christoffer C; Bagger, Jens; Schrøder, Henrik M; Kehlet, Henrik

    2016-08-01

    Background and purpose - The surgical treatment of periprosthetic knee infection is generally either a partial revision procedure (open debridement and exchange of the tibial insert) or a 2-stage exchange arthroplasty procedure. We describe the failure rates of these procedures on a nationwide basis. Patients and methods - 105 partial revisions (100 patients) and 215 potential 2-stage revision procedures (205 patients) performed due to infection from July 1, 2011 to June 30, 2013 were identified from the Danish Knee Arthroplasty Register (DKR). Failure was defined as surgically related death ≤ 90 days postoperatively, re-revision due to infection, or not reaching the second stage for a planned 2-stage procedure within a median follow-up period of 3.2 (2.2-4.2) years. Results - The failure rate of the partial revisions was 43%. 71 of the partial revisions (67%) were revisions of a primary prosthesis with a re-revision rate due to infection of 34%, as compared to 55% in revisions of a revision prosthesis (p = 0.05). The failure rate of the 2-stage revisions was 30%. Median time interval between stages was 84 (9-597) days. 117 (54%) of the 2-stage revisions were revisions of a primary prosthesis with a re-revision rate due to infection of 21%, as compared to 29% in revisions of a previously revised prosthesis (p = 0.1). Overall postoperative mortality was 0.6% in high-volume centers (> 30 procedures within 2 years) as opposed to 7% in the remaining centers (p = 0.003). Interpretation - The failure rates of 43% after the partial revision procedures and 30% after the 2-stage revisions in combination with the higher mortality outside high-volume centers call for centralization and reconsideration of surgical strategies. PMID:26900908

  20. Sediment transport process and East Asian monsoon evolution during the last 410 kyr in the northern South China Sea: a multi-proxy approach

    Science.gov (United States)

    Chen, Quan; Liu, Zhifei; Kissel, Catherine

    2015-04-01

    Terrigenous detrital materials buried at sea is a book documenting their whole life, including the continental environment where they originated from and the transport process they experienced. In order to reconstruct the East Asian monsoon evolution in late Quaternary, we need to read this book correctly. The key problem is to well understand the proxies and pick the right ones, because most of them are affected by several factors. In this study, clay and magnetic mineralogical measurements and geochemical XRF analyses were conducted on Core MD12-3432 taken from the northern South China Sea at 2125 m water depth during the CIRCEA cruise organized within Franco-Chinese LIA-MONOCL framework on board the R.V. Marion Dufresne. The age model is derived from both carbonate and magnetic stratigraphy. The clearly identified Laschamp and Iceland Basin geomagnetic excursions are used as tie points. Coupled earth magnetic field paleointensity and carbonate content record calibrated from XRF core scanned calcium intensity, we established a robust age model, indicating that Core MD12-3432 covers the last 410 kyr with an average sedimentation rate of 12.4 cm/kyr. The calibrated XRF-scan data provide high-resolution Ti/Ca, Al/Si and K/Al ratios. Ti/Ca and Al/Si ratios vary in phase, indicating strong clastic flux and short transport distances during glacials. Variations in K/Al ratio show an independent pattern, suggesting that temperature-driven chemical weathering is not the main control factor. Special attention needs therefore to be paid to the transport process. For that purpose, anisotropy of magnetic susceptibility was measured on discrete samples at 50 cm intervals. Orientations of the principal anisotropy axes could be reconstructed, using the NRM declination to orient the core in the horizontal plane. The maximum axis is relatively well oriented in the stratigraphic plane of the sedimentary magnetic fabric. A 90° shift is observed at the MIS 5-6 boundary, suggesting a

  1. A ~600 kyr duration Early Pleistocene record from the West Turkana (Kenya) HSPDP drill site: elemental XRF variability to reconstruct climate change in Turkana Boy's backyard

    Science.gov (United States)

    Stockhecke, M.; Beck, C. C.; Brown, E. T.; Cohen, A.; Deino, A. L.; Feibel, C. S.; Sier, M.

    2015-12-01

    . In addition, the XRF record of the changing hydroclimate of the West Turkana Basin from 1.3 to 1.9 kyrs will be explored in relation to regional reconstructions and marine stratigraphies.

  2. HEDR modeling approach: Revision 1

    International Nuclear Information System (INIS)

    This report is a revision of the previous Hanford Environmental Dose Reconstruction (HEDR) Project modeling approach report. This revised report describes the methods used in performing scoping studies and estimating final radiation doses to real and representative individuals who lived in the vicinity of the Hanford Site. The scoping studies and dose estimates pertain to various environmental pathways during various periods of time. The original report discussed the concepts under consideration in 1991. The methods for estimating dose have been refined as understanding of existing data, the scope of pathways, and the magnitudes of dose estimates were evaluated through scoping studies

  3. Medical writing, revising and editing

    DEFF Research Database (Denmark)

    Pilegaard, Morten

    2006-01-01

    The globalization of science makes medical writing, editing and revision a rapidly growing field of linguistic study and practice. Medical science texts are written according to uniform, general guidelines and medical genres have become highly conventionalized in terms of structure and linguistic...... form. Medical editing often takes the form of peer review and mainly addresses issues of contents and overall validity. Medical revision incorporates the checking of the macrostructure and the microstructure of the text, its language and style and its suitability for the target reader or client...

  4. Revised Code of Ethics wins CMA approval.

    OpenAIRE

    Rafuse, J

    1996-01-01

    Canadian physicians now operate under a revised Code of Ethics. In August General Council endorsed a revised code put forward by the CMA's Committee on Ethics. The endorsement brings 4 years' work to a positive conclusion.

  5. [Revised practice guideline 'Anaemia in midwifery practice'

    NARCIS (Netherlands)

    Beentjes, M.; Jans, S.M.P.J.

    2012-01-01

    The practice guideline of the Royal Dutch Organization of Midwives 'Anaemia in primary care midwifery practice' published in 2000, has recently been revised. The revised guideline takes physiological haemodilution during pregnancy into consideration and provides gestation specific reference values f

  6. Diet History Questionnaire: Database Revision History

    Science.gov (United States)

    The following details all additions and revisions made to the DHQ nutrient and food database. This revision history is provided as a reference for investigators who may have performed analyses with a previous release of the database.

  7. Revised Safety Code A2

    CERN Document Server

    SC Secretariat

    2005-01-01

    Please note that the revised Safety Code A2 (Code A2 rev.) entitled "REPORTING OF ACCIDENTS AND NEAR MISSES" is available on the web at the following url: https://edms.cern.ch/document/335502/LAST_RELEASED Paper copies can also be obtained from the SC Unit Secretariat, e-mail: sc.secretariat@cern.ch SC Secretariat

  8. Revised Accounting for Business Combinations

    Science.gov (United States)

    Wilson, Arlette C.; Key, Kimberly

    2008-01-01

    The Financial Accounting Standards Board (FASB) has recently issued Statement of Financial Accounting Standards No. 141 (Revised 2007) Business Combinations. The object of this Statement is to improve the relevance, representational faithfulness, and comparability of reported information about a business combination and its effects. This Statement…

  9. The nuclear liability conventions revised

    International Nuclear Information System (INIS)

    The signature on 12 February 2004 of the Protocols amending respectively the 1960 Paris Convention and the 1963 Brussels Supplementary Convention was the second step of the process of modernisation of the international nuclear liability regime after the adoption in September 1997 of a Protocol revising the 1963 Vienna Convention and of a new Convention on Supplementary Compensation for Nuclear Damage. The common objective of the new instruments is to provide more funds to compensate a larger number of potential victims in respect of a broader range of damage. Another goal of the revision exercise was to maintain the compatibility between the Paris and Vienna based systems, a commitment enshrined in the 1988 Joint Protocol, as well as to ascertain that Paris/Brussels countries could also become a Party to the Convention on Supplementary Compensation. However, while generally consistent vis a vis the Joint Protocol, the provisions of the Paris and Vienna Conventions, as revised, differ on some significant aspects. Another remaining issue is whether the improved international nuclear liability regime will succeed in attracting in the future a larger number of countries, particularly outside Europe, and will so become truly universal. Therefore, the need for international co-operation to address these issues, to facilitate the adoption of new implementing legislation and to ensure that this special regime keeps abreast of economic and technological developments, is in no way diminished after the revision of the Conventions.(author)

  10. Vision for IT revision 2020

    OpenAIRE

    Berthing, Hans Henrik

    2014-01-01

    Denne præsentation inddrager dele af resultatet som arbejdsgruppe IT Assurance Task force nedsat af ISACA Knowledge board er kommet frem til i løbet af gruppens arbejde 2013-2014 med henblik på at finde trends og tendenser for IT revision i 20220

  11. Humeral windows in revision total elbow arthroplasty

    Science.gov (United States)

    Salama, Amir; Stanley, David

    2016-01-01

    The use of cortical windows for revision elbow arthroplasty has not previously been widely reported. Their use aids safe revision of a well fixed humeral prosthesis and can be used in the setting of dislocation, periprosthetic fracture or aseptic loosening of the ulnar component. We describe our technique and results of cortical windows in the distal humerus for revision elbow arthroplasty surgery. PMID:27583011

  12. REVISION MASTOIDECTOMY AND ITS GOAL

    Directory of Open Access Journals (Sweden)

    Sampath Kumar Singh Katewad

    2016-06-01

    Full Text Available BACKGROUND The main aims in doing surgery for chronic otitis media are: 1. Complete clearance of progressive disease from its site and form dry and well-epithelialised cavity. 2. Prevention of recurrent and residual cholesteatoma achieved by modifying the anatomy of tympanomastoid compartments. 3. Hearing improvement by reconstructing the ossicles and tympanic membrane. The main indication for revision surgery is failure to achieve above said aims by previous surgeon. The aim of our study was to identify the causes of recurrent disease and the factors that helps in chronic otitis media surgery to minimise the revisions & report the results of revision mastoidectomy. MATERIALS AND METHODS In this study, thirty patients are selected and operated for revision mastoidectomy surgery at our institute during the period from May 2013 – Dec 2015. These cases were analysed retrospectively, patients who had discharging ear with the history of previous intact canal wall and canal down mastoidectomy surgeries were selected for this study. OBSERVATION AND RESULTS In this study, the common age group of patients who underwent revision surgery - 8-46 yrs. (mean 19 yrs.. Majority of patients are female, 16 cases (53.33%; and males 14 cases (46.66%. Revision mastoidectomies were applied to 12 cases (40% of previous canal wall up mastoidectomies and 18 cases (60% of prior canal down mastoidectomies. 60% of cases had residual/recurrent cholesteatoma which was the most common finding seen. While in 33.3% cases patient had only chronic granulations. The most frequent site of cholesteatoma was mastoid antrum/mastoid cavity seen in 73% followed by attic 42.3% and mesotympanum in 40% of cases. The common failure in primary surgery was inadequate clearance of diseased mastoid air cells - 48%, high facial bridge - 48%, stenotic meatoplasty - 40%, incomplete removal of buttress - 30%. Tympanic membrane perforation - 6.66% of cases with poor architecture of mastoidectomy

  13. High resolution multi-proxy records of the last 60 kyr in the Southeastern Carpathian basin: towards a palaeoclimatic reconstruction from NW to SE Europe

    Science.gov (United States)

    Marković, Slobodan; Stevens, Thomas; Hambach, Ulrich; Machalett, Björn; Bokhorst, Mark; Vandenberghe, Jef; Svirčev, Zorica; Zöller, Ludwig

    2010-05-01

    preliminary tephrochronological results indicate possibilities independent correlation with the other continental and marine records. At an interface between Mediterranean, Atlantic and Continental climate, the results presented in this study emphasise the importance of understanding the mechanisms behind last glacial climate change recorded in the Vojvodina loess-palaeosol sequences, as a contribution toward a more detailed spatial and temporal reconstruction of environmental dynamics across the European continent during the last 60 kyr.

  14. Co-located monogenetic eruptions ~200 kyr apart driven by tapping vertically separated mantle source regions, Chagwido, Jeju Island, Republic of Korea

    Science.gov (United States)

    Brenna, Marco; Németh, Károly; Cronin, Shane J.; Sohn, Young Kwan; Smith, Ian E. M.; Wijbrans, Jan

    2015-05-01

    -developed paleosol represents at least 200 kyr between the two co-located eruptions. The distinctive magma compositions show that each eruption tapped an independent region within the same underlying mantle source. These observations show that contrary to most assumptions of monogenetic volcanism, an already "tapped" source region may become fertile again through mantle convection/migration and eruptions can thus be expected from old vent sites in long-lived volcanic fields.

  15. Sedimentary organic matter and carbonate variations in the Chukchi Borderland in association with ice sheet and ocean-atmosphere dynamics over the last 155 kyr

    Directory of Open Access Journals (Sweden)

    S. F. Rella

    2011-12-01

    Full Text Available Knowledge on past variability of sedimentary organic carbon in the Arctic Ocean is important to assess natural carbon cycling and transport processes related to global climate changes. However, the late Pleistocene oceanographic history of the Arctic is still poorly understood. In the present study we show sedimentary records of total organic carbon (TOC, CaCO3, benthic foraminiferal δ18O and the coarse grain size fraction from a piston core recovered from the northern Northwind Ridge in the far western Arctic Ocean, a region potentially sensitively responding to past variability in surface current regimes and sedimentary processes such as coastal erosion. An age model based on oxygen stratigraphy, radiocarbon dating and lithological constraints suggests that the piston core records paleoenvironmental changes of the last 155 kyr. TOC shows orbital-scale increases and decreases that can be respectively correlated to the waxing and waning of large ice sheets dominating the Eurasian Arctic, suggesting advection of fine suspended matter derived from glacial erosion to the Northwind Ridge by eastward flowing intermediate water and/or surface water and sea ice during cold episodes of the last two glacial-interglacial cycles. At millennial scales, increases in TOC might correlate to a suite of Dansgaard-Oeschger Stadials between 120 and 45 ka before present (BP indicating a possible response to abrupt northern hemispheric temperature changes. Between 70 and 45 ka BP, closures and openings of the Bering Strait could have additionally influenced TOC variability. CaCO3 content tends to anti-correlate with TOC on both orbital and millennial time scales, which we interpret in terms of enhanced sediment advection from the carbonate-rich Canadian Arctic via an extended Beaufort Gyre during warm periods of the last two glacial-interglacial cycles and increased organic carbon advection from the Siberian Arctic during cold

  16. Late Quaternary evolution of Lago Castor (Chile, 45.6°S): Timing of the deglaciation in northern Patagonia and evolution of the southern westerlies during the last 17 kyr

    Science.gov (United States)

    Van Daele, Maarten; Bertrand, Sébastien; Meyer, Inka; Moernaut, Jasper; Vandoorne, Willem; Siani, Giuseppe; Tanghe, Niels; Ghazoui, Zakaria; Pino, Mario; Urrutia, Roberto; De Batist, Marc

    2016-02-01

    Even though Patagonia is ideally located to study climate of the southern mid-latitudes, many questions on the late Quaternary climate evolution remain unresolved. The timing of maximum glacier extent is still uncertain in vast areas, and the postglacial evolution of the Southern Westerly Wind Belt (SWWB) remains highly debated. Here, we study the sedimentary infill of a glacigenic lake (Lago Castor; 45.6°S, 71.8°W) located at the leeside of the Andes in Chilean Patagonia to i) reconstruct the deglacial evolution of the eastern flank of the Patagonian Ice Sheet (PIS), and ii) discuss postglacial changes in wind strength at a critical location where westerly wind records are critically lacking. A dense grid of high-resolution reflection-seismic data was used to reconstruct the large-scale infill history of the lake, and a radiocarbon dated sediment core penetrating all lacustrine seismic units, was retrieved. Results indicate that the deglaciation of the lake basin and its catchment occurred no later than ∼28 cal kyr BP (i.e. an early LGM), but possibly even already after MIS 4. Afterwards, the Lago Castor area was covered by a large proglacial lake that drained - possibly through an outburst flood - when the PIS outlet glaciers retreated to a critical location. Subsequently, very dry conditions caused the lake to desiccate, as evidenced by an unconformity visible on the seismic profiles and in the sediment core. This dry period likely resulted from the increased orographic effect of the PIS-covered Andes, accompanied by weaker westerlies. From ∼20 kyr BP onwards, the combination of a shrinking PIS and a southward shift of the SWWB resulted in increased precipitation, which caused the lake level to rise. After ∼17 cal kyr BP, lake sedimentation was more directly influenced by the southern westerlies, with the formation of sediment drifts resulting from strong bottom current during periods of intense westerly winds. Our results suggest a progressive increase

  17. Clean Air Act. Revision 5

    Energy Technology Data Exchange (ETDEWEB)

    1994-02-15

    This Reference Book contains a current copy of the Clean Air Act, as amended, and those regulations that implement the statute and appear to be most relevant to DOE activities. The document is provided to DOE and contractor staff for informational purposes only and should not be interpreted as legal guidance. This Reference Book has been completely revised and is current through February 15, 1994.

  18. Knwoledge revision in Markov networks

    OpenAIRE

    Gebhardt, Jörg; Bogerlt, Christian; Kruse, Rudolf; Detmer, Heinz

    2004-01-01

    A lot of research in graphical models has been devoted to developing correct and eficient evidence propagation methods, like join tree propagation or bucket elimination. With these methods it is possible to condition the represented probability distribution on given evidence, a reasoning process that is sometimes also called focusing. In practice, however, there is the additional need to revise the represented probability distribution in order to reflect some knowledge chang...

  19. An Uncertain Past: Data Revisions and Monetary Policy in Canada

    OpenAIRE

    Greg Tkacz

    2010-01-01

    Many important economic variables are subject to revision. This article explains how, when, and why such revisions occur; how revisions to Canadian gross domestic product (GDP) compare with GDP revisions in some other countries; which GDP components are subject to the largest revisions; and how data revisions can affect policy decisions. The author finds that revisions to Canadian GDP tend to be smaller, on average, than those of some other countries, and that among the GDP components, export...

  20. Volcanic evolution of an active magmatic rift segment on a 100 Kyr timescale: exposure dating of lavas from the Manda Hararo/Dabbahu segment of the Afar Rift

    Science.gov (United States)

    Medynski, S.; Williams, A.; Pik, R.; Burnard, P.; Vye, C.; France, L.; Ayalew, D.; Yirgu, G.

    2012-12-01

    In the Afar depression (Ethiopia), extension is already organised along rift segments which morphologically resemble oceanic rifts. Segmentation here results from interactions between dyke injection and volcanism, as observed during the well documented 2005 event on the Dabbahu rift segment. During this tectono-volcanic crisis, a megadyke was injected, followed by 12 subsequent dike intrusions, sometimes associated with fissure flow eruptions. Despite the accurate surveying of the magmatic and tectonic interplay during this event via remote sensing techniques, there is a lack of data on timescales of 1 to 100 kyr, the period over which the main morphology of a rift is acquired. The Dabbahu rift segment represents an ideal natural laboratory to study the evolution of rift morphology as a response to volcanic and tectonic influences. It is possible to constrain the timing of fault growth relative to the infilling of the rift axial depression by lava flows, and to assess the influence of the different magma bodies involved in lava production along the rift-segment. We use cosmogenic nuclides (3He) to determine the ages of young (cartography (Landsat, ASTER and SPOT imagery), the rift geomorphology can be linked to the magmatic and tectonic history defined by surface exposure dating. The results show that over the last 100 ka the Northern part of the Dabbahu segment was supplied by two different magma reservoirs which can be identified based on their distinctive chemistries. The main reservoir is located beneath Dabbahu volcano, and has been supplied with magma for at least 72 ka. This magmatic centre supplies magma to most of the northern third of the rift segment. The second reservoir is located further south, on the axis, close to the current mid-segment magma chamber, which was responsible for the 2005 rifting episode. This second magmatic centre supplies magma to the remaining 2/3 of the segment, but scarcely impacts its Northern termination (where the Dabbahu

  1. Revising the Atlanta Fed dollar index

    OpenAIRE

    Bryan Acree

    1999-01-01

    For more than a decade the Federal Reserve Bank of Atlanta's trade-weighted dollar index has served as a summary statistic for foreign exchange movements of the dollar. Recent revisions acknowledging significant changes in the worldwide economy ensure that the index will continue to contribute valuable information into the future. ; One significant revision to the Atlanta Fed index is to include all eleven countries that adopted the euro on January 4, 1999. Other revisions take into account t...

  2. INFORMATICS SYSTEMS FOR FINANCIAL AUDIT AND REVISION

    OpenAIRE

    Popeanga Vasile Nicolae; Vatuiu Teodora

    2009-01-01

    The activity of the financial auditors is regulated by International Standards of Revision for financial situations and information, through which the fundamental procedures and principles for this kind of missions are established. CIEL Audit and Revision application has been conceived as a support for financial auditors and expert accountants in Romania, offering help in the domain of informatics for the audit and accounting revision activities, since it is adapted both to the legal requ...

  3. My revision notes Edexcel GCSE computer science

    CERN Document Server

    Cushing, Steve

    2015-01-01

    Unlock your full potential with this revision guide which focuses on the key content and skills you need to know. With My Revision Notes for AQA GCSE Computer Science, which perfectly matches the latest examined elements of the course, you can: - Take control of your revision: plan and focus on the areas you need to revise, with advice, summaries and notes from author Steve Cushing - Show you fully understand key topics by using specific strategies and theories to add depth to your knowledge of programming and computing issues and processes - Apply programming and com

  4. My revision notes AQA GCSE English Language

    CERN Document Server

    Brindle, Keith

    2015-01-01

    Unlock your full potential with this revision guide for the new AQA GCSE English Language which focuses on the key content and skills you need to know. -Take control of your revision: plan and focus on the areas you need to revise. -Improve your exam skills with self-testing and exam-style questions. -Keep focused on what you need to know with Key Terms based around the exam questions. -Unpick each exam question with guidance on how to approach them and specific Revision Tasks

  5. Revision surgeries following vagus nerve stimulator implantation.

    Science.gov (United States)

    Lam, Sandi; Lin, Yimo; Curry, Daniel J; Reddy, Gaddum D; Warnke, Peter C

    2016-08-01

    The vagus nerve stimulator (VNS) has been shown to provide a safe, albeit costly, treatment for intractable epilepsy. We aimed to analyze the incidence, timing, and clinical/demographic associations of revision surgery post-VNS implantation in epilepsy patients. The Thomson Reuters MarketScan database, containing data from 23-50million individuals, was used. Epilepsy patients receiving VNS implantations from 2003 to 2009 were identified by Current Procedural Terminology and International Classification Of Diseases Ninth Revision codes. Incidence and timing of subsequent implant-related surgeries were recorded. Events were described using time-to-event methodology, with Kaplan-Meier failure estimation/Cox proportional hazard models adjusted for clinical/demographic factors. In 1234 patients, average incidence of revision surgeries over 6years of follow-up were <1%, <3%, 4-10%, and <1% for VNS electrode revision, battery revision/removal, battery replacement/implantation, and infection washout, respectively. For electrode revision and battery revision/replacement, the incidence was higher in the first year and for battery replacement in later years. Age, sex, insurance type, or geographic region did not significantly impact event occurrence. Implant-related revision surgeries are rare. Some events occur more often in certain follow-up years than others; none are significantly impacted by age, sex, insurance type, or geographic region. The most common reason for revision was battery replacement several years after VNS placement. PMID:27050913

  6. Revising Lecture Notes: How Revision, Pauses, and Partners Affect Note Taking and Achievement

    Science.gov (United States)

    Luo, Linlin; Kiewra, Kenneth A.; Samuelson, Lydia

    2016-01-01

    Note taking has been categorized as a two-stage process: the recording of notes and the review of notes. We contend that note taking might best involve a three-stage process where the missing stage is revision. This study investigated the benefits of revising lecture notes and addressed two questions: First, is revision more effective than…

  7. Revised

    DEFF Research Database (Denmark)

    Johannsen, Vivian Kvist; Nord-Larsen, Thomas; Riis-Nielsen, Torben;

    and Energy and the Ministry of Environment. The report is based on the data from the Danish National Forest Inventory (NFI), performed for the Ministry of Environment and the SINKS project in relation to Article 3.4 of the Kyoto protocol for the Ministry of Climate and Energy. Forest & Landscape, Copenhagen...

  8. Revision of the genus Endospermum Bth. (Euphorbiaceae)

    NARCIS (Netherlands)

    Schaeffer, J.

    1971-01-01

    The revision was undertaken because the latest monograph by Pax & Hoffmann, dating from 1912, did not provide a satisfactory key, and because since that time a very large amount of new material has been collected and several new species were described. In the present revision 12 species have been re

  9. 76 FR 4258 - Occupational Radiation Protection; Revision

    Science.gov (United States)

    2011-01-25

    ... Part 835 RIN 1901-AA-95 Occupational Radiation Protection; Revision AGENCY: Department of Energy...) proposes to revise the values in an appendix to its Occupational Radiation Protection requirements. The... are given in appendix C. DOE first published, a final rule on December 14, 1993, (58 FR...

  10. Revised State Budget Sells Kids Short

    Science.gov (United States)

    Children Now, 2012

    2012-01-01

    The Administration's May Revision of the 2012-2013 state budget addresses a $15.7 billion shortfall through funding shifts, cuts, and new revenue sources that place children squarely in harms way. California's kids are already grossly underserved relative to the rest of the nation's children. If the May Revise budget is passed by the Legislature,…

  11. Postoperative pain treatment' practice guideline revised

    NARCIS (Netherlands)

    Houweling, P.L.; Molag, M.L.; Boekel, R.L.M. van; Verbrugge, S.J.; Haelst, I.M. van; Hollmann, M.W.

    2013-01-01

    - On the initiative of the Dutch Association of Anaesthesiologists, a multidisciplinary workgroup has revised the 2003 practice guideline on 'Postoperative pain treatment' for adults and children.- The main reason for revision was the availability of new drugs and new methods of administration. The

  12. Radiological control manual. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Kloepping, R.

    1996-05-01

    This Lawrence Berkeley National Laboratory Radiological Control Manual (LBNL RCM) has been prepared to provide guidance for site-specific additions, supplements and interpretation of the DOE Radiological Control Manual. The guidance provided in this manual is one methodology to implement the requirements given in Title 10 Code of Federal Regulations Part 835 (10 CFR 835) and the DOE Radiological Control Manual. Information given in this manual is also intended to provide demonstration of compliance to specific requirements in 10 CFR 835. The LBNL RCM (Publication 3113) and LBNL Health and Safety Manual Publication-3000 form the technical basis for the LBNL RPP and will be revised as necessary to ensure that current requirements from Rules and Orders are represented. The LBNL RCM will form the standard for excellence in the implementation of the LBNL RPP.

  13. Radiological control manual. Revision 1

    International Nuclear Information System (INIS)

    This Lawrence Berkeley National Laboratory Radiological Control Manual (LBNL RCM) has been prepared to provide guidance for site-specific additions, supplements and interpretation of the DOE Radiological Control Manual. The guidance provided in this manual is one methodology to implement the requirements given in Title 10 Code of Federal Regulations Part 835 (10 CFR 835) and the DOE Radiological Control Manual. Information given in this manual is also intended to provide demonstration of compliance to specific requirements in 10 CFR 835. The LBNL RCM (Publication 3113) and LBNL Health and Safety Manual Publication-3000 form the technical basis for the LBNL RPP and will be revised as necessary to ensure that current requirements from Rules and Orders are represented. The LBNL RCM will form the standard for excellence in the implementation of the LBNL RPP

  14. Hot sample archiving. Revision 3

    International Nuclear Information System (INIS)

    This Engineering Study revision evaluated the alternatives to provide tank waste characterization analytical samples for a time period as recommended by the Tank Waste Remediation Systems Program. The recommendation of storing 40 ml segment samples for a period of approximately 18 months (6 months past the approval date of the Tank Characterization Report) and then composite the core segment material in 125 ml containers for a period of five years. The study considers storage at 222-S facility. It was determined that the critical storage problem was in the hot cell area. The 40 ml sample container has enough material for approximately 3 times the required amount for a complete laboratory re-analysis. The final result is that 222-S can meet the sample archive storage requirements. During the 100% capture rate the capacity is exceeded in the hot cell area, but quick, inexpensive options are available to meet the requirements

  15. Potentialities of Revised Quantum Electrodynamics

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2013-10-01

    Full Text Available The potentialities of a revised quantum electrodynamic theory (RQED earlier established by the author are reconsidered, also in respect to other fundamental theories such as those by Dirac and Higgs. The RQED theory is characterized by intrinsic linear symmetry breaking due to a nonzero divergence of the electric field strength in the vacuum state, as supported by the Zero Point Energy and the experimentally confirmed Casimir force. It includes the results of electron spin and antimatter by Dirac, as well as the rest mass of elementary particles predicted by Higgs in terms of spontaneous nonlinear symmetry breaking. It will here be put into doubt whether the approach by Higgs is the only theory which becomes necessary for explaining the particle rest masses. In addition, RQED theory leads to new results beyond those being available from the theories by Dirac, Higgs and the Standard Model, such as in applications to leptons and the photon.

  16. Revision of infected knee arthroplasties in Denmark

    DEFF Research Database (Denmark)

    Lindberg-Larsen, Martin; Jørgensen, Christoffer C; Bagger, Jens;

    2016-01-01

    Background and purpose - The surgical treatment of periprosthetic knee infection is generally either a partial revision procedure (open debridement and exchange of the tibial insert) or a 2-stage exchange arthroplasty procedure. We describe the failure rates of these procedures on a nationwide...... basis. Patients and methods - 105 partial revisions (100 patients) and 215 potential 2-stage revision procedures (205 patients) performed due to infection from July 1, 2011 to June 30, 2013 were identified from the Danish Knee Arthroplasty Register (DKR). Failure was defined as surgically related death...

  17. A Revised Holocene History of Lake Kivu, East Africa

    Science.gov (United States)

    Votava, J. E.; Johnson, T. C.; Hecky, R. E.

    2013-12-01

    The great lakes of the East African Rift valley are a vast chain of lakes formed in a region of active tectonics. These large, deep lakes are relatively old and many (e.g. Tanganyika, Malawi, and Turkana) have greatly influenced our understanding of terrestrial, tropical East African paleoclimate. Lake Kivu (max depth, 485m) sits at the heart of these rift lakes, north of Lake Tanganyika between the Democratic Republic of the Congo and Rwanda (roughly 250 km west of Lake Victoria). At over 1,400 meters in elevation, this 2,060 km2 mesotrophic lake has a complex stratification regime imposed by hydrothermal springs and deep waters supersaturated at STP in CO2 and CH4 gasses. The active Virunga Volcanoes to the north of the lake supply heated, high-salinity waters below 280 meters water depth maintaining the modern crenogenic meromixis. Based on detailed studies of diatom assemblages and bulk sedimentology, previous workers have suggested this hydrothermal activity began roughly 5,000 years BP. Unfortunately, dating and stratigraphic correlations of these original cores from the 1970 Woods Hole Oceanographic Institution's expedition have been problematic. Here we offer an improved chronology and new carbonate analyses from cores recovered in 2012 and 2013. Our AMS radiocarbon ages come from six terrigeneous macrofossils spanning the last 9,100 years (cal BP). These ages suggest a rather high sedimentation rate on the order of 70cm/kyr, and hence, our 8 m-long core provides us with a high-resolution lake history for the past 10,000 years. Most notable over the past 5,000 years in the lake history is the repeated onset and cessation of carbonate deposition, punctuated by organic-rich intervals. Earlier studies of the Woods Hole cores placed the onset of carbonate deposition at ca. 11,000 years BP suggesting changes in lake hydrology (i.e. closed to open), while the abrupt cessation of carbonate was dated at ca. 5,000 years BP and attributed to the beginning of

  18. PEER REVISION OF WRITING IN L2 CLASSROOM

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Peer revision,a supplementary strategy to teacher revisionof writing in L2 classroom,makes passive receivers of teacherrevision become active revisers,enabling students to involve inmore motivated language learning.Benefits of peer revision andits implications for teacher and student roles are discussed.Thisarticle also tentatively analyzes ways of preparing students foreffective peer revision.

  19. Nevada Test Site Radiological Control Manual. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2010-02-09

    This document supersedes DOE/NV/25946--801, “Nevada Test Site Radiological Control Manual,” Revision 0 issued in October 2009. Brief Description of Revision: A minor revision to correct oversights made during revision to incorporate the 10 CFR 835 Update; and for use as a reference document for Tenant Organization Radiological Protection Programs.

  20. Revised stratigraphy and chronology for Homo floresiensis at Liang Bua in Indonesia.

    Science.gov (United States)

    Sutikna, Thomas; Tocheri, Matthew W; Morwood, Michael J; Saptomo, E Wahyu; Jatmiko; Awe, Rokus Due; Wasisto, Sri; Westaway, Kira E; Aubert, Maxime; Li, Bo; Zhao, Jian-xin; Storey, Michael; Alloway, Brent V; Morley, Mike W; Meijer, Hanneke J M; van den Bergh, Gerrit D; Grün, Rainer; Dosseto, Anthony; Brumm, Adam; Jungers, William L; Roberts, Richard G

    2016-04-21

    Homo floresiensis, a primitive hominin species discovered in Late Pleistocene sediments at Liang Bua (Flores, Indonesia), has generated wide interest and scientific debate. A major reason this taxon is controversial is because the H. floresiensis-bearing deposits, which include associated stone artefacts and remains of other extinct endemic fauna, were dated to between about 95 and 12 thousand calendar years (kyr) ago. These ages suggested that H. floresiensis survived until long after modern humans reached Australia by ~50 kyr ago. Here we report new stratigraphic and chronological evidence from Liang Bua that does not support the ages inferred previously for the H. floresiensis holotype (LB1), ~18 thousand calibrated radiocarbon years before present (kyr cal. BP), or the time of last appearance of this species (about 17 or 13-11 kyr cal. BP). Instead, the skeletal remains of H. floresiensis and the deposits containing them are dated to between about 100 and 60 kyr ago, whereas stone artefacts attributable to this species range from about 190 to 50 kyr in age. Whether H. floresiensis survived after 50 kyr ago--potentially encountering modern humans on Flores or other hominins dispersing through southeast Asia, such as Denisovans--is an open question.

  1. Revised stratigraphy and chronology for Homo floresiensis at Liang Bua in Indonesia.

    Science.gov (United States)

    Sutikna, Thomas; Tocheri, Matthew W; Morwood, Michael J; Saptomo, E Wahyu; Jatmiko; Awe, Rokus Due; Wasisto, Sri; Westaway, Kira E; Aubert, Maxime; Li, Bo; Zhao, Jian-xin; Storey, Michael; Alloway, Brent V; Morley, Mike W; Meijer, Hanneke J M; van den Bergh, Gerrit D; Grün, Rainer; Dosseto, Anthony; Brumm, Adam; Jungers, William L; Roberts, Richard G

    2016-04-21

    Homo floresiensis, a primitive hominin species discovered in Late Pleistocene sediments at Liang Bua (Flores, Indonesia), has generated wide interest and scientific debate. A major reason this taxon is controversial is because the H. floresiensis-bearing deposits, which include associated stone artefacts and remains of other extinct endemic fauna, were dated to between about 95 and 12 thousand calendar years (kyr) ago. These ages suggested that H. floresiensis survived until long after modern humans reached Australia by ~50 kyr ago. Here we report new stratigraphic and chronological evidence from Liang Bua that does not support the ages inferred previously for the H. floresiensis holotype (LB1), ~18 thousand calibrated radiocarbon years before present (kyr cal. BP), or the time of last appearance of this species (about 17 or 13-11 kyr cal. BP). Instead, the skeletal remains of H. floresiensis and the deposits containing them are dated to between about 100 and 60 kyr ago, whereas stone artefacts attributable to this species range from about 190 to 50 kyr in age. Whether H. floresiensis survived after 50 kyr ago--potentially encountering modern humans on Flores or other hominins dispersing through southeast Asia, such as Denisovans--is an open question. PMID:27027286

  2. Revised Nuffield Chemistry: October 1979 School Survey.

    Science.gov (United States)

    Dawson, B. E.

    1980-01-01

    Presents some of the preliminary results of a survey study about the use of both the revised publications and GCE O-Level examinations for Nuffield Chemistry in 495 British schools and colleges in 1979. (HM)

  3. Suggested revision for west mexican archeological sequences.

    Science.gov (United States)

    Long, S V; Taylor, R E

    1966-12-16

    A review of the radiocarbon dates and published and unpublished archeological data from the West Mexican states of Sinaloa, Nayarit, Jalisco, and Colima has resulted in a revised tentative chronology for West Mexico.

  4. Facial Scar Revision: Understanding Facial Scar Treatment

    Science.gov (United States)

    ... the Campaign Campaign Update Member Donors Corporate Partners Recognition Program Planned Giving 1887 Annual Giving Annual Report Donate Contact Us Trust your face to a facial plastic surgeon Facial Scar Revision ...

  5. Parker River NWR : Revised Hunting Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document contains revisions to the 1978 Parker River National Wildlife Refuge Hunt Management Plan. Refuge hunters must obtain a permit to use the hunting...

  6. The revision of classical stock model

    Institute of Scientific and Technical Information of China (English)

    叶柏青; 王洪利

    2001-01-01

    On the basis of the analysis of classical stock model, according to the limitation of the model, the article puts forward the revision of classical model and enforces the applicability of the stock model.

  7. The revision of classical stock model

    Institute of Scientific and Technical Information of China (English)

    YE Bai-qing; WANG Hong-li

    2001-01-01

    On the basis of the analysis of classical stock model, according to th e limitation of the model, the article puts forward the revision of classical mo del and enforces the applicability of the stock model.

  8. Heuristic revision by Heuristic Space Exploration

    OpenAIRE

    Taillandier, Patrick

    2009-01-01

    International audience Heuristics are often used to solve complex problems. Indeed, such problem-specific knowledge, when pertinent, helps to efficiency find good solutions to complex problems. Unfortunately, acquiring and maintaining a heuristic set can be fastidious. In order to face this problem, a approach consists in revising the heuristic sets by means of experiments. In this paper, we are interested in a specific revision method of this type based on the exploration of the heuristic...

  9. Revisions to workforce jobs: December 2007

    OpenAIRE

    Nick Barford

    2008-01-01

    Describes the changes made to Annual Business Inquiry methods in the transition to a new survey, and the associated discontinuitiesThis article was first published on the National Statistics website on 12 December 2007, to coincide with the Labour Market Statistics First Release and the planned revisions made to the workforce jobs (WFJ) series. The revisions are mainly due to benchmarking the short-term employee jobs series to the latest estimates from the Annual Business Inquiry (ABI/1). The...

  10. UK audit committees and the Revised Code

    OpenAIRE

    Cowton, Christopher J.; Avison, Lynn

    2012-01-01

    Purpose - The audit committee is one of the most prominent board sub-committees, having a potentially important role to play in ensuring sound corporate governance. This paper examines and discusses the behaviour of companies following revisions to the UK’s Revised Code. Design/methodology/approach - A variety of annual report data from a sample of 50 UK companies, stratified according to size, is collected and analyzed. Findings - General compliance with many provisions of the Rev...

  11. Non-proliferation under revision

    International Nuclear Information System (INIS)

    At the 3rd NPT Revision Conference held in Geneva between August 27 and September 21, 1985, the member states to the Treaty reconfirmed their conviction that the agreement had become an essential part in the efforts to secure peace in the world and that is fundamental objectives continued to serve this purpose. Since the ratification in 1968 and the entering into force in 1970 of the Non-proliferation Treaty, the number of member states had risen continually to, at present, 130. In 1975, 92 states in 1980, 114 states had signed the agreement. The three nuclear weapon states, USA, UK, and USSR, are depositary states. France acts as if she had acceded to the Treaty, and the People's Republic of China as the 5th nuclear weapon state seems to take steps in the same direction by voluntarily opening nuclear installations to checks by IAEA inspectors. Incidentally, an effective framework of non-proliferation in the South American region has been created in the Treaty of Tlatelolco. 98% of all nuclear installations in the non-nuclear weapon countries are covered by IAEA safeguards. (orig.)

  12. Photon Physics of Revised Electromagnetics

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2006-04-01

    Full Text Available Conventional theory, as based on Maxwell’s equations and associated quantum electrodynamical concepts in the vacuum, includes the condition of zero electric field divergence. In applications to models of the individual photon and to dense light beams such a theory exhibits several discrepancies from experimental evidence. These include the absence of angular momentum (spin, and the lack of spatially limited geometry in the directions transverse to that of the propagation. The present revised theory includes on the other hand a nonzero electric field divergence, and this changes the field equations substantially. It results in an extended quantum electrodynamical approach, leading to nonzero spin and spatially limited geometry for photon models and light beams. The photon models thereby behave as an entirety, having both particle and wave properties and possessing wave-packet solutions which are reconcilable with the photoelectric effect, and with the dot-shaped marks and interference patterns on a screen by individual photons in a two-slit experiment.

  13. Revision of Khoikhoiinae (Hymenoptera, Braconidae

    Directory of Open Access Journals (Sweden)

    Michael Sharkey

    2009-09-01

    Full Text Available The species of the two genera of Khoikhoiinae (Hymenoptera, Braconidae are revised. Thirteen species are recognized, of which five are new and eight were previously described: Khoikhoia anthelion Sharkey, sp. n., K. lission Mason, 1984, K. oligospilos Sharkey, sp. n., K. semiadusta Mason, 1983, K. solata Mason, 1983, K. townesi Mason, 1983, K. turneri Mason, 1984, Sania browni Sharkey, sp. n., S. capensis Mason, 1983, S. henryi Mason, 1983, S. marjoriae Mason, 1983, S. masneri Sharkey, sp. n., and S. masoni Sharkey, sp. n.. All are from the Cape Region of South Africa, and all but one species are confined to the western Cape. A dichotomous key to species is presented; links to electronic interactive keys and to distribution maps are also included. Based on phylogenetic position and morphological characters, speculations on life history are made, and it is suggested that some species may be parasitoids of wood- or stem-boring Lepidoptera. The DELTA data matrix and images for the key are available at 10.3897/zookeys.20.108.app.1.ik; Intkey files are available at 10.3897/zookeys.20.108.app.2.ik; Lucid files in LIF and SDD format are available at doi:10.3897/zookeys.20.108.app.3.ik and doi:10.3897/zookeys.20.108.app.4.ik. Publishing of DELTA raw data will facilitate future workers to edit keys and to add newly discovered taxa.

  14. Revision of the DELFIC Particle Activity Module

    Energy Technology Data Exchange (ETDEWEB)

    Hooper, David A [ORNL; Jodoin, Vincent J [ORNL

    2010-09-01

    The Defense Land Fallout Interpretive Code (DELFIC) was originally released in 1968 as a tool for modeling fallout patterns and for predicting exposure rates. Despite the continual advancement of knowledge of fission yields, decay behavior of fission products, and biological dosimetry, the decay data and logic of DELFIC have remained mostly unchanged since inception. Additionally, previous code revisions caused a loss of conservation of radioactive nuclides. In this report, a new revision of the decay database and the Particle Activity Module is introduced and explained. The database upgrades discussed are replacement of the fission yields with ENDF/B-VII data as formatted in the Oak Ridge Isotope Generation (ORIGEN) code, revised decay constants, revised exposure rate multipliers, revised decay modes and branching ratios, and revised boiling point data. Included decay logic upgrades represent a correction of a flaw in the treatment of the fission yields, extension of the logic to include more complex decay modes, conservation of nuclides (including stable nuclides) at all times, and conversion of key variables to double precision for nuclide conservation. Finally, recommended future work is discussed with an emphasis on completion of the overall radiation physics upgrade, particularly for dosimetry, induced activity, decay of the actinides, and fractionation.

  15. A REVISION OF MALAYSIAN BAUHINIEAE

    Directory of Open Access Journals (Sweden)

    H. C. D. de Wit

    2015-11-01

    Full Text Available SummaryThis revision deals with the tribus Bauhinieae (Caesalpiniaceae as occurring in Malaysia. The tribe includes the genera Bauhinia L. s. str., Bracteolanthus de Wit gen. nov., Gigasiphon Drake del Cast., Lasiobema (Korth. Miq., Lysiphyllum (Benth. de Wit gen. & stat. nov., Phanera Lour., and Piliostigma Hochst. Bauhinia is reduced to the original Lin-nean delimitation; 9 species are treated (inclusive of a number of varieties ; 2 species are reduced to the rank of varieties and 3 new varieties are described, accounting for 3 new varietal combinations and 3 new varietal names. Bracteolanthus contains a single species for which a new combination is proposed. Gigasiphon is represented by 3 species; 3 new specific combinations are made. Lasiobema is represented by 5 species; in this ge- nus 1 new species is described, 4 new combinations and 1 new varietal combination are proposed, and a new but insufficiently represented species is recorded. Some new combinations for extra-Malaysian species are also proposed. Of Lysiphyllum 2 species are treated; 2 new combinations and some new combinations for extra-Malaysian species were necessary. Pha-nera is by far the largest genus: 44 species, many of which are divided into subspecies and/or varieties. The genus is subdivided into three sub-genera, Phanera, Biporina de Wit, and Austrocercis de Wit. Of these, subgenus Phanera, in its turn, contains 3 sections, all new, viz Pha.nero-siphon, Meganthera, and Micranthera. Subgenus Biporina comprises the 3 new sections Bifoliola, Palmatifolia, and Cinnamomifolia. Subgenus Austrocercis consists of a single species. The recognition of Phanera as a genus, as well as the description of new taxa and the revaluation of some previously described ones made necessary a large number of new names and new combinations.

  16. Change in the Nd isotopic composition of the bottom water and detrital sediments on the Bering Slope over the last 500 kyrs with implications for the formation of the North Pacific Intermediate Water

    Science.gov (United States)

    Jang, K.; Huh, Y.; Han, Y.

    2015-12-01

    The Bering Sea is a potential location for the formation of the North Pacific Intermediate/Deep Water (NPIW/NPDW) and may play an important role in the global heat distribution. We reconstructed the neodymium isotopic ratio (ɛNd) of authigenic Fe-Mn oxide coatings and detrital sediments on the Bering Slope (IODP Expedition 323 site U1345; water depth 1008 m) over the last 500 kyrs. The ɛNd is a quasi-conservative water mass tracer. We compared three different leaching techniques to assure that authigenic signals are captured without contamination from terrigenous sources: (1) leaching (3 hours) with 0.02 M hydroxylamine hydrochloride (HH) in 25% buffered acetic acid after decarbonation; sediment/solution (v/v) > 10, (2) leaching (1 hour) with 0.02 M HH in 25% buffered acetic acid without decarbonation; sediment/solution ~ 1, and (3) leaching (1 hour) with 0.005 M HH in 1.5% buffered acetic acid-0.003 M Na-EDTA without decarbonation; sediment/solution > 40. The low Al concentrations and less radiogenic ɛNdvalues indicated that method (2) is the most appropriate leaching process. The average ɛNd of the authigenic fraction over the last 500 kyrs is -3.3 ± 0.9 (1σ, n=38), with large temporal fluctuations. The ɛNd of authigenic and detrital fractions are well correlated (r2 ~ 0.66), suggesting that the bottom water composition in the Bering Sea was governed by terrigenous inflow from surrounding areas. Radiogenic ɛNd peaks (up to -1.9) seem to be influenced by radiogenic water inflow from the the Kamchatka or Aluetian arcs. The high bulk density and low b* values imply higher terrigenous versus biological contribution and enhanced sea ice formation. Subsequent brine formation would have triggered sinking of radiogenic surface water, forming the NPIW. On the other hand, non-radiogenic ɛNd troughs (down to -5.3) are observed at times of low bulk density and high b* values. We presume higher biological productivity which is supported by the high opal content at

  17. Metaphyseal bone loss in revision knee arthroplasty.

    Science.gov (United States)

    Ponzio, Danielle Y; Austin, Matthew S

    2015-12-01

    The etiology of bone loss encountered during revision total knee arthroplasty (TKA) is often multifactorial and can include stress shielding, osteolysis, osteonecrosis, infection, mechanical loss due to a grossly loose implant, and iatrogenic loss at the time of implant resection. Selection of the reconstructive technique(s) to manage bone deficiency is determined by the location and magnitude of bone loss, ligament integrity, surgeon experience, and patient factors including the potential for additional revision, functional demand, and comorbidities. Smaller, contained defects are reliably managed with bone graft, cement augmented with screw fixation, or modular augments. Large metaphyseal defects require more extensive reconstruction such as impaction bone grafting with or without mesh augmentation, prosthetic augmentation, use of bulk structural allografts, or use of metaphyseal cones or sleeves. While each technique has advantages and disadvantages, the most optimal method for reconstruction of large metaphyseal bone defects during revision TKA is not clearly established. PMID:26362647

  18. EU law revisions and legislative drift

    DEFF Research Database (Denmark)

    Borghetto, Enrico; Mäder, Lars Kai

    2014-01-01

    European Union research has made great strides in understanding the dynamics of the European Union decision-making process. In contrast to this progress, the dynamics unfolding after the enactment of a European Union secondary legislative act has largely been ignored. Some of these acts remain...... in force in their original form for several years while others are revised soon after their enactment. What factors account for this variation? We empirically analyze the proposition that in the presence of ‘legislative drift,’ i.e. the intertemporal variation of decision-makers’ preferences, major...... revisions of European Union legislative acts are more likely to occur. Based on an analysis of the revision histories of 158 major European Union acts in the time period between 1958 and 2003, we find significant support for this hypothesis....

  19. Changes in the occurrence of heavy metals in polar ice during the last climatic cycles, with special emphasis on the possible link between cosmic dust accretion rate and the 100kyr cycle

    Science.gov (United States)

    Gabrielli, P.; Barbante, C.; Planchon, F. A. M.; Ferrant, C. P.; Delmonte, B.; Boutron, C. F.

    2003-05-01

    During the last decades, ice cores drilled in Antarctica and in Greenland have provided time series of data that have allowed the characterisation of variations of natural and anthropogenic heavy metals in the past atmosphere. Nevertheless, the interactions of heavy metals with climate change and their transport patterns remain largely unknown during the last climatic cycles. Hereafter we present our project dealing with the assessment of past changes of various heavy metals in Antarctic and Greenland ice during the past = 500kyr anticipating some preliminary Zn measurements in the EPICA Dome C ice core back to about 200000years. In our project special emphasis is given to Pt group elements (PGE) that are tracers of interplanetary dust particles (IDPs). Tracers of crustal material, volcanic activity and ocean paleoproductivity are also investigated. At the moment we are focusing especially on the ongoing EPICA Dome C Antarctic ice core, decontaminating mechanically some section and perfonning preliminary measurements of Zn and Al using Graphite Fumace Atomic Absorption Spectrometry and adopting ultraclean procedures. These data confinn the prominent continental origin of Zn in the East Antarctic ice during the last and penultimate glacial period.

  20. Surface circulation patterns and the pathways of sea surface carbon dioxide (CO2 off northern Chile (~27.5° S between 30 and 10 kyr BP: global and/or local forcing?

    Directory of Open Access Journals (Sweden)

    R. Torres

    2010-03-01

    Full Text Available We present a reconstruction of past changes in partial pressure of CO2 (pCO2 from northern Chile (~27° S, between 10 and 30 kyr BP, based on carbon isotope composition of C37:2-alkenone. The high-pCO2 during the entire time series indicates that northern Chile upwelling system has been a permanent source of CO2 to the atmosphere. The multiproxy reconstruction suggests that the CO2 outgassing and sequestration pathways were modulated by local and global mechanisms. During global glacial conditions, an enhanced coastal upwelling forcing resulted in high-availability of deep water macronutrients and a CO2-supersaturated water column, which combined with high-inputs of iron from the continent, intensified the carbon sequestration pathway of the biological pump, through diatom biomass export. During the deglacial, a decrease in the upwelling forcing, an increment in water column stability and reduced continental inputs of iron are consistent with a larger role of calcifying organisms in the plankton assemblage in terms of carbon sequestration pathway through the carbonate system.

  1. Resource description and access 2013 revision

    CERN Document Server

    2013-01-01

    This e-book contains the 2013 Revision of RDA: Resource Description and Access, and includes the July 2013 Update. This e-book offers links within the RDA text and the capability of running rudimentary searches of RDA, but please note that this e-book does not have the full range of content or functionality provided by the subscription product RDA Toolkit. Included: A full accumulation of RDA- the revision contains a full set of all current RDA instructions. It replaces the previous version of RDA Print as opposed to being an update packet to that version. RDA has gone through many changes sin

  2. PWR secondary water chemistry guidelines: Revision 3

    International Nuclear Information System (INIS)

    An effective, state-of-the art secondary water chemistry control program is essential to maximize the availability and operating life of major PWR components. Furthermore, the costs related to maintaining secondary water chemistry will likely be less than the repair or replacement of steam generators or large turbine rotors, with resulting outages taken into account. The revised PWR secondary water chemistry guidelines in this report represent the latest field and laboratory data on steam generator corrosion phenomena. This document supersedes Interim PWR Secondary Water Chemistry Recommendations for IGA/SCC Control (EPRI report TR-101230) as well as PWR Secondary Water Chemistry Guidelines--Revision 2 (NP-6239)

  3. A programmable approach to revising knowledge bases

    Institute of Scientific and Technical Information of China (English)

    LUAN Shangmin; DAI Guozhong; LI Wei

    2005-01-01

    This paper presents a programmable approach to revising knowledge bases consisting of clauses. Some theorems and lemmas are shown in order to give procedures for generating maximally consistent subsets. Then a complete procedure and an incomplete procedure for generating the maximal consistent subsets are presented, and the correctness of the procedures is also shown. Furthermore, a way to implement knowledge base revision is presented, and a prototype system is introduced. Compared with related works, the main characteristic of our approach is that the approach can be implemented by a computer program.

  4. AN OVERVIEW ON BLOOM'S REVISED TAKSONOMY

    OpenAIRE

    TUTKUN, Ömer Faruk

    2013-01-01

    In this study, the main purpose is to present the main frame of revised version in 2001 of Bloom's taxonomy that has been accepted extensively in our country since 1956 as well as around the world. In accordance with this purpose, in the study, answers have been searched to these questions: 1- The rise of the original Bloom's taxonomy and what are the key features of? 2- What are the reasons for renewal of original taxonomy? 3- What kind of arrangements has been made in revised taxonomy? 4- W...

  5. Revised Law Provides Better Protection for Minor Citizens

    Institute of Scientific and Technical Information of China (English)

    JU QING

    2007-01-01

    @@ On December 29, 2006, the revised Law of the People's Republic of China on the Protection of Minors(hereinafter referred to as "the revised Law" for short) was approved at the 25th meeting of the Tenth National People's Congress (NPC), China's highest legislature. The revised Law is to become effective on June 1, 2007. Revision of the Law, which was adopted in 1991, took three years to complete, during which period a dozen drafts were produced.

  6. Impact of peer revision on second language writing

    OpenAIRE

    Öztürk, Burcu

    2006-01-01

    Cataloged from PDF version of article. This study investigates the characteristics and effectiveness of peer revision on second language writing as an aid to teacher feedback. It compares peer revision with the individual revision, helping analyze the former in a more controlled way in terms of its general usefulness. The study was conducted at Middle East Technical University. The data was collected through peer revision processes, in which peers reviewed each other’s writi...

  7. Revisions Policy for Official Statistics; A Matter of Governance

    OpenAIRE

    Carol S. Carson; Sarmad Khawaja; Thomas K. Morrison

    2004-01-01

    This paper proposes a set of good practices for the revision of macroeconomic data. The authors argue that revisions are a routine part of disseminating quality data. Revisions are made not just to correct errors but also to incorporate better source data, update base periods, and make other improvements. It is argued, using country examples and views from policymakers and other users, that national statistical agencies should have explicit revisions policies.

  8. 36 CFR 219.9 - Revision.

    Science.gov (United States)

    2010-07-01

    ... Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE PLANNING National Forest System Land and Resource Management Planning The Framework for Planning § 219.9 Revision. (a) Application... is a review of the overall management of a unit of the National Forest System and an opportunity...

  9. Fast-track revision knee arthroplasty

    DEFF Research Database (Denmark)

    Husted, Henrik; Otte, Niels Kristian Stahl; Kristensen, Billy B;

    2011-01-01

    Abstract Background and purpose Fast-track surgery has reduced the length of hospital stay (LOS), morbidity, and convalescence in primary hip and knee arthroplasty (TKA). We assessed whether patients undergoing revision TKA for non-septic indications might also benefit from fast-track surgery...

  10. Anomalies of Nuclear Criticality, Revision 6

    Energy Technology Data Exchange (ETDEWEB)

    Clayton, E. D.; Prichard, Andrew W.; Durst, Bonita E.; Erickson, David; Puigh, Raymond J.

    2010-02-19

    This report is revision 6 of the Anomalies of Nuclear Criticality. This report is required reading for the training of criticality professionals in many organizations both nationally and internationally. This report describes many different classes of nuclear criticality anomalies that are different than expected.

  11. Revised Safety Instruction 4 (IS4 REV.)

    CERN Multimedia

    2006-01-01

    Please note that the revised safety instruction 4 (IS4 REV.) entitled 'Safety Inspections' is available on the web at the following url: https://edms.cern.ch/file/335741/LAST_RELEASED/E_IS4.pdf Paper copies can also be obtained from the SC unit secretariat, e-mail: sc.secretariat@cern.ch SC Secretariat

  12. Hermann Weyl's intuitionistic mathematics (revised edition)

    NARCIS (Netherlands)

    Dalen, D. van

    2012-01-01

    It is common knowledge that for a short while Hermann Weyl joined Brouwer in his pursuit of a revision of mathematics according to intuitionistic principles. There is, however, little in the literature that sheds light on Weyl's role, and in particular on Brouwer's reaction to Weyl's allegiance to t

  13. Revision of the genus Aponogeton (Aponogetonaceae)

    NARCIS (Netherlands)

    Bruggen, van H.W.E.

    1970-01-01

    In this revision are recorded 9 species from continental Asia and Indonesia, and 2 from New Guinea. Of the latter 1 is new to science. Some species frequently confused in the past could be described exactly. All names have been properly typified and all existing types could be examined by the author

  14. Revision of the genus Labisia (Myrsinaceae)

    OpenAIRE

    Sunarno, B.

    2005-01-01

    The genus Labisia (Myrsinaceae) is revised for the Flora Malesiana region. Seven species are recognised. Several earlier described species are synonymous to L. pumila and reduced to varieties of that species: var. alata, var. lanceolata, var. neriifolia and var. sessilifolia. A new record of L. longistyla is mentioned. Labisia malouiana and L. obtusifolia are excluded from the genus.

  15. Revised Recommendation Concerning Technical and Vocational Education.

    Science.gov (United States)

    United Nations Educational, Scientific, and Cultural Organization, Paris (France).

    The UNESCO (United Nations Education, Scientific, and Cultural Organization) revised recommendation setting forth general principles, goals, and guidelines concerning technical and vocational education (adopted by the General Conference at its 18th session in Paris, 19 November 1974) is presented under the following headings: (1) Technical and…

  16. Revision of Coelogyne section Speciosae (Orchidaceae)

    OpenAIRE

    Gravendeel, B.; Vogel, de, V.

    1999-01-01

    Section Speciosae Pfitzer & Kraenzl. of the genus Coelogyne Lindl. is revised. Sixteen species are recognized, including one new ( C. tommii) and one dubious species ( (C. dichroantha). Three former varieties are raised to subspecies level ( C. speciosa subsp. speciosa, subsp. incarnata and subsp. fimbriata). Two species formerly included in sect. Speciosae by several authors are excluded (C. eberhardtii and C. lawrenceana).

  17. 78 FR 59982 - Revisions to Radiation Protection

    Science.gov (United States)

    2013-09-30

    ... COMMISSION Revisions to Radiation Protection AGENCY: Nuclear Regulatory Commission. ACTION: Standard review..., ``Radiation Protection Design Features,'' and Section 12.5, ``Operational Radiation Protection Program..., ``Radiation Protection Design Features,'' (ADAMS Accession No. ML13151A475); and Section 12.5,...

  18. A taxonomic revision of Lamium (Lamiaceae)

    NARCIS (Netherlands)

    Mennema, J.

    1989-01-01

    The present study deals with the systematics and taxonomy of the genus Lamium (Lamiaceae). The taxonomic revision is mainly based on the study of herbarium collections, and to a smaller degree on field observations and abstracts from literature. The research was done at the Rijksherbarium, Leyden, w

  19. 77 FR 23176 - Revisions to Procedural Rules

    Science.gov (United States)

    2012-04-18

    ... extensive discovery and oral cross- examination opportunities in all cases. The authority of regulatory agencies like the Commission to revise their regulations to place limits on the use of formal litigation... Commission to permit extensive discovery and sufficient time to allow preparation of technical...

  20. 7 CFR 3015.115 - Budget revisions.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 15 2010-01-01 2010-01-01 false Budget revisions. 3015.115 Section 3015.115 Agriculture Regulations of the Department of Agriculture (Continued) OFFICE OF THE CHIEF FINANCIAL OFFICER, DEPARTMENT OF AGRICULTURE UNIFORM FEDERAL ASSISTANCE REGULATIONS Programmatic Changes and Budget...

  1. Geography: A Guide to Reference Sources. [Revised].

    Science.gov (United States)

    Marley, Carol

    This revised annotated bibliography about geography concentrates on reference materials located in the McLennan Library of McGill University (Montreal, Quebec), and it emphasizes human rather than physical geography. The resources are presented in nine areas: (1) guides to the literature; (2) dictionaries; (3) gazeteers and place names; (4)…

  2. Revision of the genus Castillomys (Muridae, Rodentia)

    NARCIS (Netherlands)

    Martín Suárez, E.; Mein, P.

    1991-01-01

    In this paper a revision of the genus Castillomys Michaux, 1969 is given. Previously described subspecies are elevated to species rank, and a new species, Castillomys rivas, is proposed. Several populations from Italy and Turkey are transferred to the genus Centralomys de Giuli, 1989. For a populati

  3. A revision of Madagascan Bertiera (Rubiaceae)

    NARCIS (Netherlands)

    Wittle, P.M.; Davis, A.P.

    2010-01-01

    A taxonomic revision of the Madagascan representatives of the genus Bertiera is presented, to include three species, B. brevithyrsa, B. crinita and B. longithyrsa. A key to their identification is provided, each species is fully described, and summaries of distribution, habitat and ecology, and phen

  4. Revision of Lecananthus (Rubiaceae-Schradereae)

    OpenAIRE

    Puff, C.; Buchner, R.; Greimler, J.

    1998-01-01

    A taxonomic revision of Lecananthus Jack, a genus of three species occurring in Sumatra, the Peninsular Malaysia, and Borneo, is presented. A new species, L. peduncularis Puff, endemic to Sarawak, is described, and a new combination, L. pentander (Merr.) Puff (syn. Lucinaea pentandra Merr.), is published.

  5. A revision of Mitragyna and Uncaria (Rubiaceae)

    NARCIS (Netherlands)

    Ridsdale, C.E.

    1978-01-01

    A world wide revision of the genera Mitragyna s.l. and Uncaria both placed in the subtribe Mitragyninae Havil. of the tribe Cinchoneae, with a general discussion on the affinities of the genera, the growth form and architecture. In Mitragyna 10 species and in Uncaria 34 species are recognized; 4 new

  6. Personalisation: The Emerging "Revised" Code of Education?

    Science.gov (United States)

    Hartley, David

    2007-01-01

    In England, a "revised" educational code appears to be emerging. It centres upon the concept of "personalisation". Its basis is less in educational theory, more in contemporary marketing theory. Personalisation can be regarded in two ways. First, it provides the rationale for a new mode of public-service delivery, one which seeks to enable "users"…

  7. Assessing the Impact of Peer Revision on L2 Writing.

    Science.gov (United States)

    Villamil, Olga S.; de Guerrero, Maria C. M.

    1998-01-01

    A study investigated the impact of peer revision on writers' final drafts in two rhetorical modes, narration and persuasion, among 14 Spanish-speaking college students of English-as-a-Second-Language. Results revealed 74% of revisions made in peer sessions were incorporated into final drafts, and writers made many further self-revisions,…

  8. Uncovering Substance: Teaching Revision in High School Classrooms

    Science.gov (United States)

    Early, Jessica Singer; Saidy, Christina

    2014-01-01

    This article shares the process and outcomes from a three-day revision workshop designed and implemented in a diverse high school language arts classroom. The revision workshop included: direct instruction, self-reflection, and peer feedback to provide struggling writers with opportunities to take part in substantive revision. The authors examine…

  9. 78 FR 44596 - Minor Boundary Revision at Yosemite National Park

    Science.gov (United States)

    2013-07-24

    ... National Park Service Minor Boundary Revision at Yosemite National Park AGENCY: National Park Service, Interior. ACTION: Notification of Boundary Revision. SUMMARY: The boundary of Yosemite National Park is... boundary of Yosemite National Park. DATES: The effective date of this boundary revision is July 24,...

  10. EPRI BWR Water Chemistry Guidelines Revision

    International Nuclear Information System (INIS)

    BWRVIP-190: BWR Water Chemistry Guidelines – 2008 Revision has been revised. The revision committee consisted of U.S. and non-U.S. utilities (members of the BWR Vessel and Internals Protection (BWRVIP) Mitigation Committee), reactor system manufacturers, fuel suppliers, and EPRI and industry experts. The revised document, BWRVIP-190 Revision 1, was completely reformatted into two volumes, with a simplified presentation of water chemistry control, diagnostic and good practice parameters in Volume 1 and the technical bases in Volume 2, to facilitate use. The revision was developed in parallel and in coordination with preparation of the Fuel Reliability Guidelines Revision 1: BWR Fuel Cladding Crud and Corrosion. Guidance is included for plants operating under normal water chemistry (NWC), moderate hydrogen water chemistry (HWC-M), and noble metal application (GE-Hitachi NobleChem™) plus hydrogen injection. Volume 1 includes significant changes to BWR feedwater and reactor water chemistry control parameters to provide increased assurance of intergranular stress corrosion cracking (IGSCC) mitigation of reactor materials and fuel reliability during all plant conditions, including cold shutdown (≤200°F (93°C)), startup/hot standby (>200°F (93°C) and ≤ 10%) and power operation (>10% power). Action Level values for chloride and sulfate have been tightened to minimize environmentally assisted cracking (EAC) of all wetted surfaces, including those not protected by hydrogen injection, with or without noble metals. Chemistry control guidance has been enhanced to minimize shutdown radiation fields by clarifying targets for depleted zinc oxide (DZO) injection while meeting requirements for fuel reliability. Improved tabular presentations of parameter values explicitly indicate levels at which actions are to be taken and required sampling frequencies. Volume 2 provides the technical bases for BWR water chemistry control for control of EAC, flow accelerated corrosion

  11. 30 CFR 285.617 - What activities require a revision to my SAP, and when will MMS approve the revision?

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 2 2010-07-01 2010-07-01 false What activities require a revision to my SAP... OUTER CONTINENTAL SHELF Plans and Information Requirements Activities Under An Approved Sap § 285.617 What activities require a revision to my SAP, and when will MMS approve the revision? (a) You...

  12. Guidance document for revision of DOE Order 5820.2A, Radioactive Waste Technical Support Program. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Kudera, D.E.; McMurtrey, C.D.; Meagher, B.G.

    1993-04-01

    This document provides guidance for the revision of DOE Order 5820.2A, ``Radioactive Waste Management.`` Technical Working Groups have been established and are responsible for writing the revised order. The Technical Working Groups will use this document as a reference for polices and procedures that have been established for the revision process. The overall intent of this guidance is to outline how the order will be revised and how the revision process will be managed. In addition, this document outlines technical issues considered for inclusion by a Department of Energy Steering Committee.

  13. Bicyclic graphs with maximal revised Szeged index

    CERN Document Server

    Li, Xueliang

    2011-01-01

    The revised Szeged index $Sz^*(G)$ is defined as $Sz^*(G)=\\sum_{e=uv \\in E}(n_u(e)+ n_0(e)/2)(n_v(e)+ n_0(e)/2),$ where $n_u(e)$ and $n_v(e)$ are, respectively, the number of vertices of $G$ lying closer to vertex $u$ than to vertex $v$ and the number of vertices of $G$ lying closer to vertex $v$ than to vertex $u$, and $n_0(e)$ is the number of vertices equidistant to $u$ and $v$. Hansen used the AutoGraphiX and made the following conjecture about the revised Szeged index for a connected bicyclic graph $G$ of order $n \\geq 6$:

  14. Revising the senior walking environmental assessment tool

    Science.gov (United States)

    Michael, Yvonne L.; Keast, Erin M.; Chaudhury, Habib; Day, Kristen; Mahmood, Atiya; Sarte, Ann F.I.

    2016-01-01

    Background The Senior Walking Environmental Assessment Tool (SWEAT), an instrument for measuring built environmental features associated with physical activity of older adults, was revised to create an easier-to-use tool for use by practitioners and community members. Methods Inter-rater and intra-rater reliability of the modified instrument (SWEAT-R) was assessed in Portland, Oregon in 2007. Five trained observers audited street segments in 12 neighborhoods, resulting in 361 pairs of audits, including 63 repeated audits. Results Overall, 88% and 75% of items assessed had good or excellent inter-rater and intra-rater reliability, respectively. The revised instrument required less time to complete than the original instrument, while obtaining more information. Conclusion SWEAT-R provides easy to gather, reliable data for use in community-based audits of built environment in relation to walking among older adults. PMID:19136025

  15. Revision of the genus Calpurnia (Sophoreae: Leguminosae

    Directory of Open Access Journals (Sweden)

    A. J. Beaumont

    1999-12-01

    Full Text Available Taxa recognised in this revision are:  Calpurnia aurea (Aiton Benth. subsp.  aurea; C.  aurea (Aiton Benth. subsp.  indica Brummitt; C. floribunda Harv ; C. glabrata Brummitt; C. intrusa (R.Br in W.T.Aiton E.Mey.; C. reflexus A.J.Beaumont sp nov.;  C. sericea Harv. and  C. woodii Schinz. A putative hybrid between  C. sericea and  C. woodii is recorded. With the exception of C aurea, all species are restricted to southern Africa.  C. reflexus is possibly extinct, and C.  woodii is considered rare. Characters examined in this revision are habitat, habit, vestiture, leaf morphology and anatomy; floral, pollen, fruit and seed morphology and anatomy; and seedling morphology. Illustrations and a key to taxa are provided.

  16. Operational and Complete Approaches to Belief Revision

    Institute of Scientific and Technical Information of China (English)

    LI Wei; LUAN Shangmin

    2000-01-01

    Two operational approaches to belief revision are presented in this paper. The rules of R-calculus are modified in order to deduce all the maximal consistent subsets. Another set of rules is given in order to deduce all the minimal inconsistent subsets. Then a procedure, which can generate all the maximal consistent subsets, is presented. They are complete approaches, since all the maximal consistent subsets can be deduced or generated. In this paper, only the case of propositional logic is considered.

  17. Women's sexual dysfunction: revised and expanded definitions

    OpenAIRE

    Basson, Rosemary

    2005-01-01

    ACCEPTANCE OF AN EVIDENCE-BASED CONCEPTUALIZATION OF WOMEN'S SEXUAL RESPONSE combining interpersonal, contextual, personal psychological and biological factors has led to recently published recommendations for revision of definitions of women's sexual disorders found in the American Psychiatric Association's Diagnostic and Statistical Manual (DSM–IV-TR). DSM-IV definitions have focused on absence of sexual fantasies and sexual desire prior to sexual activity and arousal, even though the frequ...

  18. Revision of ISO 15859 Aerospace Fluid Standards

    Science.gov (United States)

    Greene, Benjamin; McClure, Mark B.

    2012-01-01

    A detailed review of ISO 15859 "Space Systems - Fluid Characteristics, Sampling and Test Methods" was performed An approach to revising Parts 1-9 and 11-13 was developed and concurred by the NASA Technical Standards Program Office. The approach was to align them with the highest level source documents, and not to program-specific requirements. The updated documents were prepared and presented.

  19. Rationale of Revision Lumbar Spine Surgery

    OpenAIRE

    Elgafy, Hossein; Vaccaro, Alexander R; Chapman, Jens R.; Dvorak, Marcel F.

    2012-01-01

    Revision lumbar spine surgeries are technically challenging with inconstant outcome results. This article discusses the preoperative, intraoperative, as well as postoperative management in these difficult patients. Successful intervention requires a detailed history and physical examination and carefully chosen diagnostic tests. Preoperative planning is paramount in these cases. The decision-making process should address the timing of the surgery, surgical approach, level of interbody fusion ...

  20. Revised Safety Instruction 41 (IS41 REV.)

    CERN Document Server

    SC Secretariat

    2005-01-01

    Please note that the Revised Safety Instruction No. 41 (IS41 REV.), entitled 'The use of plastic and other non-metallic materials at CERN with respect to fire safety and radiation resistance' is available on the web at the following url: https://edms.cern.ch/document/335806/LAST_RELEASED Paper copies can also be obtained from the SC Unit Secretariat, e-mail: sc.secretariat@cern.ch SC Secretariat

  1. Revision of Coelogyne section Fuliginosae (Orchidaceae)

    OpenAIRE

    Pelser, P.B.; Gravendeel, B.; Vogel, de, V.

    2000-01-01

    Section Fuliginosae Pfitzer & Kraenzl. of the genus Coelogyne Lindl. is revised. With the help of a pollen study, principal component and cluster analyses with morphological characters and a survey of some additional data, two species are recognized (C. fimbriata and C. triplicatula), including one dubious variety (C. fimbriata var. acuminata). Eleven names are reduced to synonymy. Three species formerly included in sect. Fuliginosae by several authors are excluded ( (C. micrantha, C. treutle...

  2. Clinical Outcomes Following Revision Anterior Shoulder Stabilization

    Science.gov (United States)

    Frank, Rachel M.; Mellano, Chris; Shin, Jason J.; Feldheim, Terrence F.; Mascarenhas, Randhir; Yanke, Adam Blair; Cole, Brian J.; Nicholson, Gregory P.; Romeo, Anthony A.; Verma, Nikhil N.

    2015-01-01

    Objectives: The purpose of this study was to determine the clinical outcomes following revision anterior shoulder stabilization performed either via all-arthroscopic soft tissue repair or via Latarjet coracoid transfer. Methods: A retrospective review of prospectively collected data on 91 shoulders undergoing revision anterior shoulder stabilization was performed. All patients underwent prior soft tissue stabilization; those with prior open bone grafting procedures were excluded. For patients with 25% glenoid bone loss, Latarjet was performed (n=28). Patients were queried regarding recurrent instability (subluxation or dislocation). Clinical outcomes were evaluated using validated patient reported outcome questionnaires including the American Shoulder and Elbow Surgeons (ASES) score, Simple Shoulder Test (SST), visual analog scale (VAS) for pain, and Western Ontario Shoulder Instability Index (WOSI). Results: A total of 63 shoulders in 62 patients (46 males, 16 females) with an average age of 23.2 ± 6.9 years were included in the revision arthroscopy group. At an average follow-up of 46.9 ± 16.8 months (range, 15 to 78), the mean WOSI score was 80.1 (range, 15.0 to 100), and there were significant improvements (pLatarjet group. Thirteen (46%) had more than one previous stabilization attempt. ), the average WOSI score was 71.9, and there were significant improvements (pLatarjet. Conclusion: Both arthroscopic revision stabilization and Latarjet coracoid transfer result in satisfactory outcomes in patients who have failed previous arthroscopic capsulolabral repair. Recurrent instability rates were higher in the all-arthroscopic group (19% versus 7%). Longer-term studies are required to determine whether similar results are maintained over time, and to provide guidance on focused clinical indications for this challenging patient population.

  3. The Revision of Japans Early Commercial Treaties.

    OpenAIRE

    Nigel Brailey; Sir Hugh Cortazzi; James Hoare; Ayako Hotta-Lister

    1999-01-01

    A joint symposium between the Japan Society and the London School of Economics and Political Science was held in the Suntory and Toyota International Centres for Economics and Related Disciplines on 9 July 1999 to mark the centenary of Treaty Revision in Japan. In the Bakumatsu period of the 1850s and 1860s Japan had entered into a number of commercial treaties with foreign countries which (among other things) gave foreign nationals extraterritorial rights in Japanese treaty ports. These trea...

  4. The revision of Japan's early commercial treaties

    OpenAIRE

    CORTAZZI, Hugh; Hoare, James; Brailey, Nigel; Hotta-Lister, Ayako

    1999-01-01

    A joint symposium between the Japan Society and the London School of Economics and Political Science was held in the Suntory and Toyota International Centres for Economics and Related Disciplines on 9 July 1999 to mark the centenary of Treaty Revision in Japan. In the Bakumatsu period of the 1850s and 1860s Japan had entered into a number of commercial treaties with foreign countries which (among other things) gave foreign nationals extraterritorial rights in Japanese treaty ports. These trea...

  5. How should we revise the paratactic theory?

    OpenAIRE

    Frankish, Keith

    1996-01-01

    This paper takes another look at Davidson's paratactic theory of indirect discourse and evaluates some revisions to it, proposed recently by Ian Rumfitt (Mind, 1993). Davidson's original version of the theory – according to which indirect speech reports refer to token utterances – has a problem dealing with ambiguity. Rumfitt suggests that we can solve this problem by supposing that the immediate objects of verbs in indirect speech are token representations of disambiguated LF tree-structures...

  6. Nuclear safety guide: TID--7016, Revision 2

    International Nuclear Information System (INIS)

    The Nuclear Safety Guide was first issued in 1956 as classified AEC report LA-2063 and was reprinted the next year, unclassified, as TID-7016. Revision 1, published in 1961, extended the scope and refined the guiding information. Revision 2 of the Guide differs significantly from its predecessor in that the latter was intentionally conservative in its recommendations. Firmly based on experimental evidence of criticality, the original Guide and the first revision were considered to be of most value to organizations whose activities with fissionable materials were not extensive and, secondarily, that it would serve as a point of departure for members of established nuclear safety teams experienced in the field. The advance of calculational capability has permitted validated calculations to extend and substitute for experimental data. The broadened data base has enabled better interpolation, extension, and understanding of available information, especially in areas previously addressed by undefined but adequate factors of safety. The content has been thereby enriched in qualitative guidance. The information inherently contains, and the user can recapture, the quantitative guidance characteristic of the former Guides by employing appropriate safety factors

  7. Perioperative complications in revision hip surgery.

    Science.gov (United States)

    Thomasson, E; Guingand, O; Terracher, R; Mazel, C

    2001-01-01

    Revision hip surgery now constitutes 10-30% of all joint procedures. The morbidity and associated with this demanding operation are not well established. The goal of this paper is to determine these rates and to identify some predictive factors. The complication rate ranges from 31,5 to more than 77% in the literature. Life threatening complications represent 1,8 to 8% of these, leading to death in about 1,6%. ASA score and age above 75 appear to be correlated with medical complications. The injection rate varies from 1 to 5,8%, and may be as high as 14% in cases with a past history of infection. Heterotopic ossification occurred in 13 to 65%, reaching severity in 3,3 to 8,3%. Surgical complications include dislocation and femoral injuries. Dislocations occur in almost 10%, leading to revision in1-4,2%. Age and the number of previous surgical operations appear to be significant risk factors. Femoral injuries (perforations or femoral fractures) occur in 6-37%, especially in impaction grafting technique and when uncemented implants are used. Age over 75 years and femoral defects appear to be significant risk factors for femoral fractures. The rate of complications in revision hip surgery continues to be high, but successful clinical outcome can be attained even in elderly patients. Attentive preoperative exams, good prevention of technical pitfalls, the experience of the surgeon and the use of specific tools may decrease these complications and make this demanding procedure safer.

  8. A Single Counterexample Leads to Moral Belief Revision.

    Science.gov (United States)

    Horne, Zachary; Powell, Derek; Hummel, John

    2015-11-01

    What kind of evidence will lead people to revise their moral beliefs? Moral beliefs are often strongly held convictions, and existing research has shown that morality is rooted in emotion and socialization rather than deliberative reasoning. In addition, more general issues-such as confirmation bias-further impede coherent belief revision. Here, we explored a unique means for inducing belief revision. In two experiments, participants considered a moral dilemma in which an overwhelming majority of people judged that it was inappropriate to take action to maximize utility. Their judgments contradicted a utilitarian principle they otherwise strongly endorsed. Exposure to this scenario led participants to revise their belief in the utilitarian principle, and this revision persisted over several hours. This method provides a new avenue for inducing belief revision. PMID:25810137

  9. A Single Counterexample Leads to Moral Belief Revision.

    Science.gov (United States)

    Horne, Zachary; Powell, Derek; Hummel, John

    2015-11-01

    What kind of evidence will lead people to revise their moral beliefs? Moral beliefs are often strongly held convictions, and existing research has shown that morality is rooted in emotion and socialization rather than deliberative reasoning. In addition, more general issues-such as confirmation bias-further impede coherent belief revision. Here, we explored a unique means for inducing belief revision. In two experiments, participants considered a moral dilemma in which an overwhelming majority of people judged that it was inappropriate to take action to maximize utility. Their judgments contradicted a utilitarian principle they otherwise strongly endorsed. Exposure to this scenario led participants to revise their belief in the utilitarian principle, and this revision persisted over several hours. This method provides a new avenue for inducing belief revision.

  10. Bias-Driven Revision of Logical Domain Theories

    OpenAIRE

    Koppel, M.; Feldman, R; Segre, A. M.

    1994-01-01

    The theory revision problem is the problem of how best to go about revising a deficient domain theory using information contained in examples that expose inaccuracies. In this paper we present our approach to the theory revision problem for propositional domain theories. The approach described here, called PTR, uses probabilities associated with domain theory elements to numerically track the ``flow'' of proof through the theory. This allows us to measure the precise role of a clause or liter...

  11. Is Peer Review Training Effective in Iranian EFL Students’ Revision?

    Directory of Open Access Journals (Sweden)

    Hadiseh Esmaeeli

    2014-08-01

    Full Text Available This study aims to investigate the effect of peer review training on the Iranian EFL students’ subsequent revision in an advanced writing class in Larestan Islamic Azad University. After 12 weeks class demonstration, teacher-reviewer conferences with 20 male and female students, the students’ first drafts, revisions, and reviewers’ comments were collected and compared the comments before and after peer review training. The findings revealed that the students incorporated significantly more comments into subsequent revisions after peer review training. Therefore, peer review training had a positive effect on the students’ subsequent revisions.

  12. My revision notes AQA GCSE computer science computing fundamentals

    CERN Document Server

    Cushing, Steve

    2013-01-01

    Unlock your full potential with this revision guide which focuses on the key content and skills you need to know. With My Revision Notes for AQA GCSE Computer Science, which perfectly matches the latest examined elements of the course, you can:. - Take control of your revision: plan and focus on the areas you need to revise, with advice, summaries and notes from author Steve Cushing. - Show you fully understand key topics by using specific strategies and theories to add depth to your knowledge of programming and computing issues and processes. - Apply programming and computing terms accurately

  13. Revising Economics for the Next Generation

    OpenAIRE

    Gerardo P. Sicat

    2003-01-01

    The revision of Economics, a textbook in elementary economics, using the Philippines as the basis of the study material, will be available in academic year 2003-4. The paper begins with a review of the antecedents of the efforts at the University of the Philippines School of Economics to improve economic teaching materials in the country. The first part – elementary economics – builds on the concepts of the markets and on the law of supply and demand and illustrates the principles with actual...

  14. The thesaurus review, renaissance, and revision

    CERN Document Server

    Roe, Sandra K

    2013-01-01

    Use this single source to uncover the origin and development of the thesaurus! The Thesaurus: Review, Renaissance, and Revision examines the historical development of the thesaurus and the standards employed for thesaurus construction. This book provides both the history of thesauri and tutorials on usage to increase your understanding of thesaurus creation, use, and evaluation. This reference tool offers essential information on thesauri in the digital environment, including Web sites, databases, and software. For 50 years, the thesaurus has been a core reference book; The Thesaurus: Review,

  15. A Modest Revision of the Standard Model

    CERN Document Server

    Stephenson,, G J

    2015-01-01

    With a modest revision of the mass sector of the Standard Model, the systematics of the fermion masses and mixings can be fully described and interpreted as providing information on matrix elements of physics beyond the Standard Model. A by-product is a reduction of the largest Higgs Yukawa fine structure constant by an order of magnitude. The extension to leptons provides for insight on the difference between quark mixing and lepton mixing as evidenced in neutrino oscillations. The large difference between the scale for up-quark and down-quark masses is not addressed.

  16. Impending revision of the euratom treaty

    International Nuclear Information System (INIS)

    The decision by the European Court of Justice in the matter of the EEC's participation in international negotiations on safety problems of the nuclear fuel cycle is of basic importance, beyond the case to which it referred, in the interpretation of the respective provisions of the Euratom Treaty in the nuclear fuel sector. The reasoning of the European Court of Justice, which constitutes a reinforcement and advancement of the responsibilities and rights of the EEC, has made France ask for a revision of the Treaty. (orig.)

  17. 78 FR 37164 - Revisions to the Air Emissions Reporting Requirements: Revisions to Lead (Pb) Reporting Threshold...

    Science.gov (United States)

    2013-06-20

    ... INFORMATION CONTACT section. \\1\\ As prescribed by the Tribal Authority Rule (63 FR 7253, February 12, 1998... Lead (73 FR 66964, November 12, 2008) and the associated Revisions to Lead Ambient Air Monitoring Requirements (75 FR 81126), and because use of the previous AERR over the past few years has revealed...

  18. Revising in two languages: A multidimensional comparison of online writing revisions in L1 en FL

    NARCIS (Netherlands)

    M. Stevenson; R. Schoonen; K. de Glopper

    2006-01-01

    It has frequently been claimed that, in foreign language writing, attention to linguistic processes inhibits attention available for higher level conceptual processing [e.g., Chenoweth & Hayes, 2001; Whalen & Ménard, 1995]. This study examines this hypothesis for foreign language revision processes

  19. Actitud Hacia las Matematicas: Revision Bibliografica (Attitudes Toward Mathematics: Revised Bibliography). Publication No. 39.

    Science.gov (United States)

    Rodriguez Feijoo, Nelida

    Investigations about attitudes toward mathematics carried out in the past decade were revised. The instruments used to measure attitudes toward mathematics were analysed as well as the attitudes toward different aspects of mathematics, their relation with other school subjects and their stability through time. Opinions about the influence of…

  20. Three Principles to REVISE People's Unethical Behavior.

    Science.gov (United States)

    Ayal, Shahar; Gino, Francesca; Barkan, Rachel; Ariely, Dan

    2015-11-01

    Dishonesty and unethical behavior are widespread in the public and private sectors and cause immense annual losses. For instance, estimates of U.S. annual losses indicate $1 trillion paid in bribes, $270 billion lost due to unreported income, and $42 billion lost in retail due to shoplifting and employee theft. In this article, we draw on insights from the growing fields of moral psychology and behavioral ethics to present a three-principle framework we call REVISE. This framework classifies forces that affect dishonesty into three main categories and then redirects those forces to encourage moral behavior. The first principle, reminding, emphasizes the effectiveness of subtle cues that increase the salience of morality and decrease people's ability to justify dishonesty. The second principle, visibility, aims to restrict anonymity, prompt peer monitoring, and elicit responsible norms. The third principle, self-engagement, increases people's motivation to maintain a positive self-perception as a moral person and helps bridge the gap between moral values and actual behavior. The REVISE framework can guide the design of policy interventions to defeat dishonesty.

  1. A Way to Revised Quantum Electrodynamics

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2012-04-01

    Full Text Available In conventional theoretical physics and its Standard Model the guiding principle is that the equations are symmetrical. This limitation leads to a number of difficulties, because it does not permit masses for leptons and quarks, the electron tends to “explode” un- der the action of its self-charge, a corresponding photon model has no spin, and such a model cannot account for the “needle radiation” proposed by Einstein and observed in the photoelectric e ff ect and in two-slit experiments. This paper summarizes a revised Lorentz and gauge invariant quantum electrodynamic theory based on a nonzero electric field divergence in the vacuum and characterized by linear intrinsic broken symmetry. It thus provides an alternative to the Higgs concept of nonlinear spontaneous broken sym- metry, for solving the difficulties of the Standard Model. New results are obtained, such as nonzero and finite lepton rest masses, a point-charge-like behavior of the electron due to a revised renormalization procedure, a magnetic volume force which counteracts the electrostatic eigen-force of the electron, a nonzero spin of the photon and of light beams, needle radiation, and an improved understanding of the photoelectric effect, two-slit ex- periments, electron-positron pair formation, and cork-screw-shaped light beams.

  2. Three Principles to REVISE People's Unethical Behavior.

    Science.gov (United States)

    Ayal, Shahar; Gino, Francesca; Barkan, Rachel; Ariely, Dan

    2015-11-01

    Dishonesty and unethical behavior are widespread in the public and private sectors and cause immense annual losses. For instance, estimates of U.S. annual losses indicate $1 trillion paid in bribes, $270 billion lost due to unreported income, and $42 billion lost in retail due to shoplifting and employee theft. In this article, we draw on insights from the growing fields of moral psychology and behavioral ethics to present a three-principle framework we call REVISE. This framework classifies forces that affect dishonesty into three main categories and then redirects those forces to encourage moral behavior. The first principle, reminding, emphasizes the effectiveness of subtle cues that increase the salience of morality and decrease people's ability to justify dishonesty. The second principle, visibility, aims to restrict anonymity, prompt peer monitoring, and elicit responsible norms. The third principle, self-engagement, increases people's motivation to maintain a positive self-perception as a moral person and helps bridge the gap between moral values and actual behavior. The REVISE framework can guide the design of policy interventions to defeat dishonesty. PMID:26581728

  3. Curriculum revision: product innovation for quality outcomes.

    Science.gov (United States)

    Thomas, Georgianna; Carroll, V Susan

    2006-01-01

    The education of any professional discipline rests on a curricular foundation that reflects the discipline's theory and knowledge bases, practice patterns, and unique skills. In addition, professional health care education must respond to and reflect changes in technology, societal definitions of health and wellness, and broad social issues such as access to care, health care funding, and changing patient demographics. These issues are interwoven with efforts to also provide high-quality education with positive learning outcomes. In this article, the authors describe a school of nursing's efforts to revise its curriculum to reflect a professional shift in focus to community-based nursing practice and the goals of the federal health goals outlined in Healthy People 2010. The revision also served as the starting point for a change in the process through which the college will seek accreditation in the future; this process-Academic Quality Improvement Program-requires institutions of higher learning to use a continuous quality model as its base.

  4. The JFK Coma Recovery Scale--Revised.

    Science.gov (United States)

    Kalmar, Kathleen; Giacino, Joseph T

    2005-01-01

    The JFK Coma Recovery Scale (CRS) was developed to help characterise and monitor patients functioning at Rancho Levels I-IV and has been used widely in both clinical and research settings within the US and Europe. The CRS was recently revised to address a number of concerns emanating from our own clinical experience with the scale, feedback from users and researchers as well as the results of Rasch analyses. Additionally, the CRS did not include all of the behavioural criteria necessary to diagnose the minimally conscious state (MCS), thereby limiting diagnostic utility. The revised JFK Coma Recovery Scale (CRS-R) includes addition of new items, merging of items found to be statistically similar, deletion or modification of items showing poor fit with the scale's underlying construct, renaming of items, more stringent scoring criteria, and quantification of elicited behaviours to improve accuracy of rating. Psychometric properties of the CRS-R appear to meet standards for measurement and evaluation tools for use in clinical and research settings, and diagnostic application suggests that the scale is capable of discriminating patients in the minimally conscious state from those in the vegetative state.

  5. Inferential revision in narrative texts: An ERP study.

    Science.gov (United States)

    Pérez, Ana; Cain, Kate; Castellanos, María C; Bajo, Teresa

    2015-11-01

    We evaluated the process of inferential revision during text comprehension in adults. Participants with high or low working memory read short texts, in which the introduction supported two plausible concepts (e.g., 'guitar/violin'), although one was more probable ('guitar'). There were three possible continuations: a neutral sentence, which did not refer back to either concept; a no-revise sentence, which referred to a general property consistent with either concept (e.g., '…beautiful curved body'); and a revise sentence, which referred to a property that was consistent with only the less likely concept (e.g., '…matching bow'). Readers took longer to read the sentence in the revise condition, indicating that they were able to evaluate their comprehension and detect a mismatch. In a final sentence, a target noun referred to the alternative concept supported in the revise condition (e.g., 'violin'). ERPs indicated that both working memory groups were able to evaluate their comprehension of the text (P3a), but only high working memory readers were able to revise their initial incorrect interpretation (P3b) and integrate the new information (N400) when reading the revise sentence. Low working memory readers had difficulties inhibiting the no-longer-relevant interpretation and thus failed to revise their situation model, and they experienced problems integrating semantically related information into an accurate memory representation.

  6. Belief Revision and Verisimilitude Based on Preference and Truth Orderings

    NARCIS (Netherlands)

    Renardel de Lavalette, Gerard R.; Zwart, Sjoerd D.

    2011-01-01

    In this rather technical paper we establish a useful combination of belief revision and verisimilitude according to which better theories provide better predictions, and revising with more verisimilar data results in theories that are closer to the truth. Moreover, this paper presents two alternativ

  7. 76 FR 62002 - Revisions to the California State Implementation Plan

    Science.gov (United States)

    2011-10-06

    ... by limiting the VOCs of commercial coatings and solvents. SJVUAPCD Rule 4612 is revised to implement... Measure (SCM) titled, ``Suggested Control Measure for Automotive Coatings.'' SJVUAPCD Rule 4653 is revised... of Reasonably Available Control Technology and Best Available Retrofit Control Technology...

  8. 78 FR 3083 - Revised Pricing for Five 2013 Products

    Science.gov (United States)

    2013-01-15

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF THE TREASURY United States Mint Revised Pricing for Five 2013 Products AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing revised pricing for five...

  9. Using a Local Area Network to Teach Computer Revision Skills.

    Science.gov (United States)

    Thompson, Diane P.

    1989-01-01

    Describes the use of a local area network and video switching equipment in teaching revision skills on computer. Explains that reading stories from texts, rewriting them from differing character viewpoints, and editing them as a group exposed students to a variety of writing problems and stimulated various revision strategies. (SG)

  10. Modeling data revisions : Measurement error and dynamics of "true" values

    NARCIS (Netherlands)

    Jacobs, Jan P. A. M.; van Norden, Simon

    2011-01-01

    Policy makers must base their decisions on preliminary and partially revised data of varying reliability. Realistic modeling of data revisions is required to guide decision makers in their assessment of current and future conditions. This paper provides a new framework with which to model data revis

  11. 40 CFR 97.24 - NOX Budget permit revisions.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false NOX Budget permit revisions. 97.24... (CONTINUED) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS Permits § 97.24 NOX Budget permit revisions. (a) For a NOX Budget source with a title V operating permit, except as...

  12. 40 CFR 96.25 - NOX Budget permit revisions.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false NOX Budget permit revisions. 96.25... (CONTINUED) NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS FOR STATE IMPLEMENTATION PLANS Permits § 96.25 NOX Budget permit revisions. (a) For a NOX Budget source with a title V operating...

  13. 75 FR 62459 - Revision of Class E Airspace; Unalakleet, AK

    Science.gov (United States)

    2010-10-12

    ... for air traffic management of Instrument Flight Rules (IFR) operations. DATES: Effective 0901 UTC... Federal Register to revise Class E airspace at Unalakleet, AK (75 FR 32865). Interested parties were... amendments to existing SIAPs require that the orientation and dimensions of Class E airspace be revised...

  14. Revised SWAT. The integrated burnup calculation code system

    Energy Technology Data Exchange (ETDEWEB)

    Suyama, Kenya; Mochizuki, Hiroki [Department of Fuel Cycle Safety Research, Nuclear Safety Research Center, Tokai Research Establishment, Japan Atomic Energy Research Institute, Tokai, Ibaraki (Japan); Kiyosumi, Takehide [The Japan Research Institute, Ltd., Tokyo (Japan)

    2000-07-01

    SWAT is an integrated burnup code system developed for analysis of post irradiation examination, transmutation of radioactive waste, and burnup credit problem. This report shows an outline and a user's manual of revised SWAT. This revised SWAT includes expansion of functions, increasing supported machines, and correction of several bugs reported from users of previous SWAT. (author)

  15. Proposal for revision of ISO 4377: Flat-V weirs

    NARCIS (Netherlands)

    Kalkwijk, J.P.T.; Lianxiang, W.

    1983-01-01

    In ISO/TC 113/SC 2/308 it was suggested that ISO 4377 could be significantly simplified as far as the calculation of discharge was involved. The proposal for revision is based upon this suggestion. The revision is fully based upon the material given in ISO 4377. In that respect no changes have been

  16. 40 CFR 93.151 - State implementation plan (SIP) revision.

    Science.gov (United States)

    2010-07-01

    ... SIP revision allowed under 40 CFR 51.851. When EPA approves a State's or Tribe's conformity provisions... 40 Protection of Environment 20 2010-07-01 2010-07-01 false State implementation plan (SIP... implementation plan (SIP) revision. The Federal conformity rules under this subpart, in addition to any...

  17. 77 FR 4880 - Revision of Form FHWA-1273

    Science.gov (United States)

    2012-01-31

    ... Federal Highway Administration Revision of Form FHWA-1273 AGENCY: Federal Highway Administration (FHWA... revision of form FHWA-1273--``Required Contract Provisions Federal-Aid Construction Contracts.'' This form... after submitting comments electronically. Anyone is able to search the electronic form of all...

  18. 77 FR 59739 - Revision to Form No. 6

    Science.gov (United States)

    2012-10-01

    ... throughput that combines interstate and intrastate data.\\11\\ \\8\\ Revision to Form No. 6, 76 FR 46668 (Aug. 3...\\ Regulations Implementing the National Environmental Policy Act, Order No. 486, 486 FR 1750 (Jan. 22, 1988... Energy Regulatory Commission 18 CFR Part 357 Revision to Form No. 6 AGENCY: Federal Energy...

  19. Inferential revision in narrative texts: An ERP study.

    Science.gov (United States)

    Pérez, Ana; Cain, Kate; Castellanos, María C; Bajo, Teresa

    2015-11-01

    We evaluated the process of inferential revision during text comprehension in adults. Participants with high or low working memory read short texts, in which the introduction supported two plausible concepts (e.g., 'guitar/violin'), although one was more probable ('guitar'). There were three possible continuations: a neutral sentence, which did not refer back to either concept; a no-revise sentence, which referred to a general property consistent with either concept (e.g., '…beautiful curved body'); and a revise sentence, which referred to a property that was consistent with only the less likely concept (e.g., '…matching bow'). Readers took longer to read the sentence in the revise condition, indicating that they were able to evaluate their comprehension and detect a mismatch. In a final sentence, a target noun referred to the alternative concept supported in the revise condition (e.g., 'violin'). ERPs indicated that both working memory groups were able to evaluate their comprehension of the text (P3a), but only high working memory readers were able to revise their initial incorrect interpretation (P3b) and integrate the new information (N400) when reading the revise sentence. Low working memory readers had difficulties inhibiting the no-longer-relevant interpretation and thus failed to revise their situation model, and they experienced problems integrating semantically related information into an accurate memory representation. PMID:26047776

  20. 76 FR 2611 - Olympic Coast National Marine Sanctuary Regulations Revisions

    Science.gov (United States)

    2011-01-14

    ... other matter from a cruise ship except clean vessel engine cooling water, clean vessel generator cooling... Sanctuary Regulations Revisions AGENCY: Office of National Marine Sanctuaries (ONMS), National Ocean Service... sanctuary's terms of designation (59 FR 24586, May 11, 1994). This proposed rule revises the...

  1. The Use of Genre-Specific Evaluation Criteria for Revision

    Science.gov (United States)

    Philippakos, Zoi A.; MacArthur, Charles A.

    2016-01-01

    Revision is a challenging step of the writing process and students often focus their attention to mechanics or grammar instead of making organizational and meaning changes. It is important for students to critically read and independently evaluate their work when revising. This practitioner article discusses the importance of genre-specific…

  2. 75 FR 57956 - Draft Revision of the Federalwide Assurance

    Science.gov (United States)

    2010-09-23

    ... HUMAN SERVICES Draft Revision of the Federalwide Assurance AGENCY: Department of Health and Human... Assistant Secretary for Health, is announcing the availability of the draft revised Federalwide Assurance (FWA) form and Terms of Assurance, and is seeking comment on these draft documents. OHRP is...

  3. China Revises Its Oil Resources Rules for Foreign Cooperation

    Institute of Scientific and Technical Information of China (English)

    Sun Xiujuan

    2001-01-01

    @@ The State Council has recently revised two regulations concerning recovery of oil and gas resources to relax the restrictions on foreign companies.The revised regulations are "The Rules of the People's Republic of China for Cooperative Recovery of Onshore Petroleum Resources" and "The Rules of the People's Republic of China for Cooperative Recovery of Offshore Petroleum Resources".

  4. Setting Writing Revision Goals after Assessment for Learning

    Science.gov (United States)

    Huang, Shu-Chen

    2015-01-01

    This study examined the effects of goal setting for revision in an EFL writing classroom where principles of assessment "for" learning (AfL) were followed. Following draft writing, instruction, and assessment, college freshmen were put into control, goal, and goal+ groups. Before students started to revise their drafts, individuals in…

  5. Merlin C. Wittrock and the Revision of Bloom's Taxonomy

    Science.gov (United States)

    Krathwohl, David R.; Anderson, Lorin W.

    2010-01-01

    Merl Wittrock, a cognitive psychologist who had proposed a generative model of learning, was an essential member of the group that over a period of 5 years revised the "Taxonomy of Educational Objectives," originally published in 1956. This article describes the development of that 2001 revision (Anderson and Krathwohl, Editors) and Merl's…

  6. Belief Revision in the GOAL Agent Programming Language

    DEFF Research Database (Denmark)

    Spurkeland, Johannes Svante; Jensen, Andreas Schmidt; Villadsen, Jørgen

    2013-01-01

    Agents in a multiagent system may in many cases find themselves in situations where inconsistencies arise. In order to properly deal with these, a good belief revision procedure is required. This paper illustrates the usefulness of such a procedure: a certain belief revision algorithm is consider...

  7. Revisions of endoprosthetic reconstructions after limb salvage in musculoskeletal oncology

    NARCIS (Netherlands)

    Renard, AJS; Veth, RPH; Schreuder, HWB; van Horn, J; Keller, A; Schraffordt Koops, H.

    1998-01-01

    Of 91 limb-salvage procedures using prosthetic reconstructions because of primary or metastatic bone and soft-tissue tumors 26 revisions were performed in 16 patients. Revision was due to polyethylene wear (9 cases), aseptic loosening (8 cases), recurrent hip dislocation (3 cases), prosthetic stem f

  8. The New & Revised Consumer Price Indexes. ERS Information Aid.

    Science.gov (United States)

    Kowalski, Joan P. Sullivan; Porwoll, Paul J.

    The purpose of this Information Aid is to alert school officials to changes and revisions in the Consumer Price Index (CPI), to familiarize them with differences between the former CPI and the new and revised indexes, to demonstrate how the U.S. Bureau of Labor Statistics (BLS) computes changes in the CPI, to indicate appropriate uses of the CPI,…

  9. Blog-Based Peer Response for L2 Writing Revision

    Science.gov (United States)

    Pham, Vu Phi Ho; Usaha, Siriluck

    2016-01-01

    Few studies have been conducted to see how blog-based peer response helps students to improve their writing revisions. The present study investigates peer comments made through blogs, the nature of the comments and their areas of focus, and the ratios of students incorporating suggestions made through blog-based comments into revisions of their…

  10. The reliability of the Structured Interview for Schizotypy-Revised

    NARCIS (Netherlands)

    Vollema, MG; Ormel, J

    2000-01-01

    We investigated the reliability of the Structured Interview for Schizotypy-Revised (SIS-R). The original interview (SIS) was developed by Kendler, We revised the SIS, primarily by standardizing the rating procedures. Operational definitions and explicit criteria for rating were given. We introduced

  11. Predictors of Revision Surgery After Primary Anterior Cruciate Ligament Reconstruction

    Science.gov (United States)

    Yabroudi, Mohammad A.; Björnsson, Haukur; Lynch, Andrew D.; Muller, Bart; Samuelsson, Kristian; Tarabichi, Majd; Karlsson, Jón; Fu, Freddie H.; Harner, Christopher D.; Irrgang, James J.

    2016-01-01

    Background: Revision anterior cruciate ligament (ACL) reconstruction surgery occurs in 5% to 15% of individuals undergoing ACL reconstruction. Identifying predictors for revision ACL surgery is of essence in the pursuit of creating adequate prevention programs and to identify individuals at risk for reinjury and revision. Purpose: To determine predictors of revision ACL surgery after failed primary ACL reconstruction. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 251 participants (mean age ± SD, 26.1 ± 9.9 years) who had undergone primary ACL reconstruction 1 to 5 years earlier completed a comprehensive survey to determine predictors of revision ACL surgery at a mean 3.4 ± 1.3 years after the primary ACL reconstruction. Potential predictors that were assessed included subject characteristics (age at the time of surgery, time from injury to surgery, sex, body mass index, preinjury activity level, return to sport status), details of the initial injury (mechanism; concomitant injury to other ligaments, menisci, and cartilage), surgical details of the primary reconstruction (Lachman and pivot shift tests under anesthesia, graft type, femoral drilling technique, reconstruction technique), and postoperative course (length of rehabilitation, complications). Univariate and multivariate logistic regression analyses were performed to identify factors that predicted the need for revision ACL surgery. Results: Overall, 21 (8.4%) subjects underwent revision ACL surgery. Univariate analysis showed that younger age at the time of surgery (P = .003), participation in sports at a competitive level (P = .023), and double-bundle ACL reconstruction (P = .024) predicted increased risk of revision ACL surgery. Allograft reconstructions also demonstrated a trend toward greater risk of revision ACL surgery (P = .076). No other variables were significantly associated with revision ACL surgery. Multivariate analysis revealed that revision ACL surgery was

  12. The association between metal allergy, total knee arthroplasty, and revision

    DEFF Research Database (Denmark)

    Münch, Henrik J; Jacobsen, Stig; Olesen, Jens T;

    2015-01-01

    database from the greater Copenhagen area (n = 27,020). RESULTS: 327 patients were registered in both databases. The prevalence of contact allergy to nickel, chromium, and cobalt was comparable in patients with and without revision surgery. However, in patients with 2 or more episodes of revision surgery......, the prevalence of cobalt and chromium allergy was markedly higher. Metal allergy that was diagnosed before implant surgery appeared not to increase the risk of implant failure and revision surgery. INTERPRETATION: While we could not confirm that a positive patch test reaction to common metals is associated...... with complications and revision surgery after knee arthroplasty, metal allergy may be a contributor to the multifactorial pathogenesis of implant failure in some cases. In cases with multiple revisions, cobalt and chromium allergies appear to be more frequent....

  13. Fostering revision of argumentative writing through structured peer assessment.

    Science.gov (United States)

    Tsai, Ya-Chin; Chuang, Min-Tun

    2013-02-01

    This quasi-experimental study investigated the effect of structured peer assessment on revision of an argumentative writing. Two intact classes (N = 22, 26) were randomly assigned to be the trained and control groups. The latter received no facilitative resources, while the former participated in structured peer assessment based on Calibrated Peer Review, a web-based program purposefully designed for students to receive peer-assessment training, assess their peers' writing, and make written commentary online. At the end of the treatment, both groups revised their writing. The trained group revised their writing more extensively, outperforming the control group on frequency and type of revision, as well as the holistic quality of argumentative writing. After structured peer assessment, participants of the trained group became critical of their own work and invested more effort in spontaneous revision to produce higher-quality argumentative writing. PMID:23829147

  14. 20 CFR 404.992 - Notice of revised determination or decision.

    Science.gov (United States)

    2010-04-01

    ... revision and of your right to request that a disability hearing be held before a revised reconsidered... AND DISABILITY INSURANCE (1950- ) Determinations, Administrative Review Process, and Reopening...

  15. The practices of competing discourses revised

    DEFF Research Database (Denmark)

    Nielsen, Charlotte Marie Bisgaard

    and studied in everyday interaction in the context of health communication? I will discuss 1) the order of competing discourses with examples drawn from a modern practice study at the nursing home which specialize in persons with aquired brain damage. Since some of the participants have severe brain damage I......The practices of competing discourses revised Contrasting perceptions of practices have been observed at a nursing home and research center, these produce discrepancies and problematic interaction patterns in for instance therapeutical situations. How may traits of contrasting practices be observed...... how ’sense-making’ may be approached as real persons experienced understandings’. Getting closer to the people communicating and their experienced understandings seem crucial when working with organizational intervention. May a new analytical perspective help distinguish the experienced communication...

  16. Waste Management Program management plan. Revision 1

    International Nuclear Information System (INIS)

    As the prime contractor to the Department of Energy Idaho Operations Office (DOE-ID), Lockheed Martin Idaho Technologies Company (LMITCO) provides comprehensive waste management services to all contractors at the Idaho National Engineering and Environmental Laboratory (INEEL) through the Waste Management (WM) Program. This Program Management Plan (PMP) provides an overview of the Waste Management Program objectives, organization and management practices, and scope of work. This document will be reviewed at least annually and updated as needed to address revisions to the Waste Management's objectives, organization and management practices, and scope of work. Waste Management Program is managed by LMITCO Waste Operations Directorate. The Waste Management Program manages transuranic, low-level, mixed low-level, hazardous, special-case, and industrial wastes generated at or transported to the INEEL

  17. Local public document room directory. Revision 7

    International Nuclear Information System (INIS)

    This directory (NUREG/BR-0088, Revision 7) lists local public document rooms (LPDRs) for commercial nuclear power plants with operating or possession-only licenses or under construction, plus the LPDRs for potential high-level radioactive waste repository sites, gaseous diffusion plants, certain fuel cycle facilities, certain low-level waste disposal facilities, and any temporary LPDRs established for the duration of licensing proceedings. In some instances, the LPDR libraries maintain document collections for more than one licensed facility. The library staff members listed are the persons most familiar with the LPDR collections. Reference librarians in the NRC Headquarters Public Document Room (PDR) are also available to assist the public in locating NRC documents

  18. A Review of Criticality Accidents 2000 Revision

    International Nuclear Information System (INIS)

    Criticality accidents and the characteristics of prompt power excursions are discussed. Sixty accidental power excursions are reviewed. Sufficient detail is provided to enable the reader to understand the physical situation, the chemistry and material flow, and when available the administrative setting leading up to the time of the accident. Information on the power history, energy release, consequences, and causes are also included when available. For those accidents that occurred in process plants, two new sections have been included in this revision. The first is an analysis and summary of the physical and neutronic features of the chain reacting systems. The second is a compilation of observations and lessons learned. Excursions associated with large power reactors are not included in this report

  19. Local public document room directory. Revision 7

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-04-01

    This directory (NUREG/BR-0088, Revision 7) lists local public document rooms (LPDRs) for commercial nuclear power plants with operating or possession-only licenses or under construction, plus the LPDRs for potential high-level radioactive waste repository sites, gaseous diffusion plants, certain fuel cycle facilities, certain low-level waste disposal facilities, and any temporary LPDRs established for the duration of licensing proceedings. In some instances, the LPDR libraries maintain document collections for more than one licensed facility. The library staff members listed are the persons most familiar with the LPDR collections. Reference librarians in the NRC Headquarters Public Document Room (PDR) are also available to assist the public in locating NRC documents.

  20. A Revised Collection of Sunspot Group Numbers

    CERN Document Server

    Vaquero, J M; Carrasco, V M S; Clette, F; Lefèvre, L; Gallego, M C; Arlt, R; Aparicio, A J P; Richard, J -G; Howe, R

    2016-01-01

    We describe a revised collection of the number of sunspot groups from 1610 to the present. This new collection is based on the work of Hoyt and Schatten (Solar Phys. 179, 189, 1998). The main changes are the elimination of a considerable number of observations during the Maunder Minimum (hereafter, MM) and the inclusion of several long series of observations. Numerous minor changes are also described. Moreover, we have calculated the active-day percentage during the MM from this new collection as a reliable index of the solar activity. Thus, the level of solar activity obtained in this work is greater than the level obtained using the original Hoyt and Schatten data, although it remains compatible with a grand minimum of solar activity. The new collection is available in digital format.

  1. A revision of the Generalized Uncertainty Principle

    CERN Document Server

    Bambi, Cosimo

    2008-01-01

    The Generalized Uncertainty Principle arises from the Heisenberg Uncertainty Principle when gravity is taken into account, so the leading order correction to the standard formula is expected to be proportional to the gravitational constant $G_N = L_{Pl}^2$. On the other hand, the emerging picture suggests a set of departures from the standard theory which demand a revision of all the arguments used to deduce heuristically the new rule. In particular, one can now argue that the leading order correction to the Heisenberg Uncertainty Principle is proportional to the first power of the Planck length $L_{Pl}$. If so, the departures from ordinary quantum mechanics would be much less suppressed than what is commonly thought.

  2. Engineering drawing field verification program. Revision 3

    International Nuclear Information System (INIS)

    Safe, efficient operation of waste tank farm facilities is dependent in part upon the availability of accurate, up-to-date plant drawings. Accurate plant drawings are also required in support of facility upgrades and future engineering remediation projects. This supporting document establishes the procedure for performing a visual field verification of engineering drawings, the degree of visual observation being performed and documenting the results. A copy of the drawing attesting to the degree of visual observation will be paginated into the released Engineering Change Notice (ECN) documenting the field verification for future retrieval and reference. All waste tank farm essential and support drawings within the scope of this program will be converted from manual to computer aided drafting (CAD) drawings. A permanent reference to the field verification status will be placed along the right border of the CAD-converted drawing, referencing the revision level, at which the visual verification was performed and documented

  3. A Review of Criticality Accidents 2000 Revision

    Energy Technology Data Exchange (ETDEWEB)

    Thomas P. McLaughlin; Shean P. Monahan; Norman L. Pruvost; Vladimir V. Frolov; Boris G. Ryazanov; Victor I. Sviridov

    2000-05-01

    Criticality accidents and the characteristics of prompt power excursions are discussed. Sixty accidental power excursions are reviewed. Sufficient detail is provided to enable the reader to understand the physical situation, the chemistry and material flow, and when available the administrative setting leading up to the time of the accident. Information on the power history, energy release, consequences, and causes are also included when available. For those accidents that occurred in process plants, two new sections have been included in this revision. The first is an analysis and summary of the physical and neutronic features of the chain reacting systems. The second is a compilation of observations and lessons learned. Excursions associated with large power reactors are not included in this report.

  4. Nuclear safety guide TID-7016 Revision 2

    International Nuclear Information System (INIS)

    The present revision of TID-7016 Nuclear Safety Guide is discussed. This Guide differs significantly from its predecessor in that the latter was intentionally conservative in its recommendations. Firmly based on experimental evidence of criticality, the original Guide and the first revision were considered to be of most value to organizations whose activities with fissionable materials were not extensive and, secondarily, that it would serve as a point of departure for members of established nuclear safety teams, experienced in the field. The reader will find a significant change in the character of information presented in this version. Nuclear Criticality Safety has matured in the past twelve years. The advance of calculational capability has permitted validated calculations to extend and substitute for experimental data. The broadened data base has enabled better interpolation, extension, and understanding of available, information, especially in areas previously addressed by undefined but adequate factors of safety. The content has been thereby enriched in qualitative guidance. The information inherently contains, and the user can recapture, the quantitative guidance characteristic of the former Guides by employing appropriate safety factors. In fact, it becomes incumbent on the Criticality Safety Specialist to necessarily impose safety factors consistent with the possible normal and abnormal credible contingencies of an operation as revealed by his evaluation. In its present form the Guide easily becomes a suitable module in any compendium or handbook tailored for internal use by organizations. It is hoped the Guide will continue to serve immediate needs and will encourage continuing and more comprehensive efforts toward organizing nuclear criticality safety information

  5. Revised spatially distributed global livestock emissions

    Science.gov (United States)

    Asrar, G.; Wolf, J.; West, T. O.

    2015-12-01

    Livestock play an important role in agricultural carbon cycling through consumption of biomass and emissions of methane. Quantification and spatial distribution of methane and carbon dioxide produced by livestock is needed to develop bottom-up estimates for carbon monitoring. These estimates serve as stand-alone international emissions estimates, as input to global emissions modeling, and as comparisons or constraints to flux estimates from atmospheric inversion models. Recent results for the US suggest that the 2006 IPCC default coefficients may underestimate livestock methane emissions. In this project, revised coefficients were calculated for cattle and swine in all global regions, based on reported changes in body mass, quality and quantity of feed, milk production, and management of living animals and manure for these regions. New estimates of livestock methane and carbon dioxide emissions were calculated using the revised coefficients and global livestock population data. Spatial distribution of population data and associated fluxes was conducted using the MODIS Land Cover Type 5, version 5.1 (i.e. MCD12Q1 data product), and a previously published downscaling algorithm for reconciling inventory and satellite-based land cover data at 0.05 degree resolution. Preliminary results for 2013 indicate greater emissions than those calculated using the IPCC 2006 coefficients. Global total enteric fermentation methane increased by 6%, while manure management methane increased by 38%, with variation among species and regions resulting in improved spatial distributions of livestock emissions. These new estimates of total livestock methane are comparable to other recently reported studies for the entire US and the State of California. These new regional/global estimates will improve the ability to reconcile top-down and bottom-up estimates of methane production as well as provide updated global estimates for use in development and evaluation of Earth system models.

  6. Ventriculoperitoneal shunt complications needing shunt revision in children: A review of 5 years of experience with 48 revisions

    Directory of Open Access Journals (Sweden)

    Rajendra K Ghritlaharey

    2012-01-01

    Full Text Available Background: The aim of this study was to review the management of ventriculoperitoneal (VP shunt complications in children. Patients and Methods: During the last 5 years (January 1, 2006 to December 31, 2010, 236 VP shunt operations were performed in children under 12 years of age; of these, 40 (16.94% developed shunt complications and those who underwent VP shunt revisions were studied. Results: This prospective study included 40 (28 boys and 12 girls children and required 48 shunt revisions. Complications following VP shunts that required shunt revisions were peritoneal catheter/peritoneal end malfunction (18, shunt/shunt tract infections (7, extrusion of peritoneal catheter through anus (5, ventricular catheter malfunction (4, cerebrospinal fluid (CSF leak from abdominal wound (4, shunt system failure (2, ventricular end/shunt displacement (2, CSF pseudocysts peritoneal cavity (2, extrusion of peritoneal catheter from neck, chest, abdominal scar and through umbilicus, one each. Four-fifth of these shunt complications occurred within 6 months of previous surgery. Surgical procedures done during shunt revisions in order of frequency were revision of peritoneal part of shunt (27, 56.25%, revision of entire shunt system (6, 12.5%, extra ventricular drainage and delayed re-shunt (5, 10.41%, shunt removal and delayed re-shunt (5, 10.41%, opposite side shunting (2, 4.16%, cysts excision and revision of peritoneal catheter (2, 4.16% and revision of ventricular catheter (1, 2.08%. The mortalities following VP shunt operations were 44 (18.64% and following shunt revisions were 4 (10%. Conclusions: VP shunt done for hydrocephalus in children is not only prone for complications and need for revision surgery but also associated with considerable mortality.

  7. Revised Iterative Solution for Groundstate of Schroedinger Equation

    Institute of Scientific and Technical Information of China (English)

    ZHAOWei-Qin

    2004-01-01

    A revised iterative method based on Green function defined by quadratures along a single trajectory is proposed to solve the low-lying quantum wave function for Schroedinger equation. Specially a new expression of the perturbed energy is obtained, which is much simpler than the traditional one. The method is applied to solve the unharmonic oscillator potential. The revised iteration procedure gives exactly the same result as those based on the single trajectory quadrature method. A comparison of the revised iteration method to the old one is made using the example of Stark effect. The obtained results are consistent to each other after making power expansion.

  8. Revision of Code of Ethics proving to be complicated procedure

    OpenAIRE

    Sullivan, Patrick

    1995-01-01

    Although the CMA Code of Ethics is only a 10-page booklet, revising it is proving to be complicated and time consuming. It is currently undergoing its first major revision in 25 years in an attempt to bring it up to date with changes within the medical profession and medical practice. The work was to have been completed in time for presentation to General Council during the 1995 annual meeting, but because of its complexity and the need for consensus the revised code will not be presented to ...

  9. Revised Bloom Taxonomy And Its Apllication In Algebra Area

    OpenAIRE

    Mehmet BEKDEMİR; SELİM, Yavuz

    2008-01-01

     The aim of this study was to introduce “Revised Bloom Taxonomy” and apply it to field of learning algebra in New Elementary Turkish Mathematics Pro- grams (for grades 6-8). Anderson at all (2001) revised Bloom Taxonomy in order to eliminate defi- ciencies and contradictions, improve and make it more modern, and renamed it as “Revised Bloom Taxonomy”. It has a two-dimension framework: Knowledge which indicates subject matter (content) and cognitive process which indicates a description of wha...

  10. A reliability analysis of the revised competitiveness index.

    Science.gov (United States)

    Harris, Paul B; Houston, John M

    2010-06-01

    This study examined the reliability of the Revised Competitiveness Index by investigating the test-retest reliability, interitem reliability, and factor structure of the measure based on a sample of 280 undergraduates (200 women, 80 men) ranging in age from 18 to 28 years (M = 20.1, SD = 2.1). The findings indicate that the Revised Competitiveness Index has high test-retest reliability, high inter-item reliability, and a stable factor structure. The results support the assertion that the Revised Competitiveness Index assesses competitiveness as a stable trait rather than a dynamic state. PMID:20712175

  11. Perioperative transfusion threshold and ambulation after hip revision surgery

    DEFF Research Database (Denmark)

    Nielsen, Kamilla; Johansson, Pär I; Dahl, Benny;

    2014-01-01

    BACKGROUND: Transfusion with red blood cells (RBC) may be needed during hip revision surgery but the appropriate haemoglobin concentration (Hb) threshold for transfusion has not been well established. We hypothesized that a higher transfusion threshold would improve ambulation after hip revision...... received RBC. CONCLUSIONS: A Hb transfusion threshold of 8.9 g/dL was associated with a statistically significantly faster TUG after hip revision surgery compared to a threshold of 7.3 g/dL but the clinical importance is questionable and the groups did not differ in Hb at the time of testing....

  12. Insurance Cover for Revised Nuclear Liability

    International Nuclear Information System (INIS)

    The financial security to be provided to victims of an incident at a nuclear installation is the main objective of international nuclear liability conventions. As from the introduction of the Paris Convention on Third Party Liability in the Field of Nuclear Energy in 1960 and the Vienna Convention on Liability for Nuclear Damage in 1963 insurers have been prepared to provide the financial capacity needed to cover the liability under both conventions. They did so in close co-operation with the competent national and international authorities, which has resulted in the insurability of as much of the nuclear liability under the conventions as possible. This tradition of co-operation between authorities and insurers was extended to include the revision negotiations regarding the above conventions, which were concluded in 1997 and 2004 respectively. This has resulted in the insurability of by far the largest part of the convention based liability. However, some heads of damage have been introduced about which insurers had expressed concerns as to their likelihood to attract insurance support. In view of the explicit choice by Convention States to include the uninsurable heads of damage into the revised conventions one would expect that liability for them would fall upon national Governments. This would reflect practice in a number of States, which already assume liability for uninsurable mandatory liabilities for a long time. Nonetheless some other States now seem reluctant to do so, the resulting deadlock having a tendency to manifest itself in a negative perception of the insurance industry. Insurers are therefore appreciative of the forum provided by the CNS to once again explain the areas where problems as regards insurability have arisen and why this is the case. This presentation will show that those areas are few in number and notably relate to a limited number of environmental damages as well as the extension of prescription periods. Furthermore, thoughts will

  13. WASTE CERTIFICATION PROGRAM PLAN - REVISION 7

    Energy Technology Data Exchange (ETDEWEB)

    MORGAN, LK

    2002-01-08

    The primary changes that have been made to this revision reflect the relocation of the Waste Certification Official (WCO) organizationally from the Quality Services Division (QSD) into the Laboratory Waste Services (LWS) Organization. Additionally, the responsibilities for program oversight have been differentiated between the QSD and LWS. The intent of this effort is to ensure that those oversight functions, which properly belonged to the WCO, moved with that function; but retain an independent oversight function outside of the LWS Organization ensuring the potential for introduction of organizational bias, regarding programmatic and technical issues, is minimized. The Waste Certification Program (WCP) itself has been modified to allow the waste certification function to be performed by any of the personnel within the LWS Waste Acceptance/Certification functional area. However, a single individual may not perform both the technical waste acceptance review and the final certification review on the same 2109 data package. Those reviews must be performed by separate individuals in a peer review process. There will continue to be a designated WCO who will have lead programmatic responsibility for the WCP and will exercise overall program operational oversite as well as determine the overall requirements of the certification program. The quality assurance organization will perform independent, outside oversight to ensure that any organizational bias does not degrade the integrity of the waste certification process. The core elements of the previous WCP have been retained, however, the terms and process structure have been modified.. There are now two ''control points,'' (1) the data package enters the waste certification process with the signature of the Generator Interface/Generator Interface Equivalent (GI/GIE), (2) the package is ''certified'', thus exiting the process. The WCP contains three steps, (1) the technical review

  14. Programme for the Environmental Control at the Swedish Nuclear Facilities, Revision; Omgivningskontrollprogram foer de kaerntekniska anlaeggningarna, revision

    Energy Technology Data Exchange (ETDEWEB)

    Linden, Ann-Marie

    2004-12-01

    This report contains a revised version of the Environmental Monitoring Programme for the Swedish Nuclear Facilities. The revision is based on earlier experiences and evaluations. Some samples have been excluded. Some have been added, for example spruce cone and the food products apple and currant. The sediment samples of 2 cm length have been completed with samples of 10 cm length every fourth year to follow the migration of radio nuclides down the sediment layers over time. The revised Environmental Monitoring Programme is valid from the 1st of January 2005.

  15. Operator licensing examination standards for power reactors. Interim revision 8

    International Nuclear Information System (INIS)

    These examination standards are intended to assist NRC examiners and facility licensees to better understand the processes associated with initial and requalification examinations. The standards also ensure the equitable and consistent administration of examinations for all applicants. These standards are for guidance purposes and are not a substitute for the operator licensing regulations (i.e., 10 CFR Part 55), and they are subject to revision or other changes in internal operator licensing policy. This interim revision permits facility licensees to prepare their initial operator licensing examinations on a voluntary basis pending an amendment to 10 CFR Part 55 that will require facility participation. The NRC intends to solicit comments on this revision during the rulemaking process and to issue a final Revision 8 in conjunction with the final rule

  16. A revised picture: has our view of the economy changed?

    OpenAIRE

    Theodore G. Bernard

    1986-01-01

    A discussion of the major statistical changes in the December 1985 benchmark revisions of the National Income and Product Accounts statistics and of their impact on business cycle timing and magnitudes.

  17. 33 CFR 151.28 - Plan review and revision.

    Science.gov (United States)

    2010-07-01

    ... BALLAST WATER Implementation of MARPOL 73/78 and the Protocol on Environmental Protection to the Antarctic Treaty as it Pertains to Pollution from Ships Oil Pollution § 151.28 Plan review and revision. (a)...

  18. Environmental Assessment Revised Hunting Plan Erie National Wildlife Refuge 1987

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — In 1984 a serious review of the existing plans led to a decision to completely post the boundary and make the necessary revisions/addendums to the hunting plan that...

  19. Revised Mulliken Electronegativities I. Calculation and Conversion to Pauling Units.

    Science.gov (United States)

    Bratsch, Steven G.

    1988-01-01

    Discusses a revision and extension of the Mulliken electronegativity scale to consider 50 elements. Describes the calculation of valence-state promotion energies and Mulliken atomic electronegativities and the conversion of Mulliken electronegativities to Pauling units. (CW)

  20. 78 FR 25521 - Revised Medical Criteria for Evaluating Visual Disorders

    Science.gov (United States)

    2013-05-01

    ... ADMINISTRATION Revised Medical Criteria for Evaluating Visual Disorders AGENCY: Social Security Administration. ACTION: Final rules; Correction. SUMMARY: The Social Security Administration published a document in the... Kryglik, Director, Office of Regulations, Social Security Administration. BILLING CODE 4191-02-P...

  1. Harmonized Tariff Schedule of the United States (2015) - Revision 1

    Data.gov (United States)

    US International Trade Commission — This dataset is the 2015 Harmonized Tariff Schedule Revision 1 effective July 1, 2015. It provides the applicable tariff rates and statistical categories for all...

  2. Questions and answers based on revised 10 CFR Part 20

    International Nuclear Information System (INIS)

    NUREG/CR-6204 is a collection of questions and answers that were originally issued in seven sets and which pertain to revised 10 CFR Part 20. The questions came from both outside and within the NRC. The answers were compiled and provided by NRC staff within the offices of Nuclear Reactor Regulation, Nuclear Material Safety and Safeguards, Nuclear Regulatory Research, the Office of State Programs, and the five regional offices. Although all of the questions and answers have been reviewed by attorneys in the NRC Office of the General Counsel, they do not constitute official legal interpretations relevant to revised 10 CFR Part 20. The questions and answers do, however, reflect NRC staff decisions and technical options on aspects of the revised 10 CFR Part 20 regulatory requirements. This NUREG is being made available to encourage communication among the public, industry, and NRC staff concerning the major revisions of the NRC's standards for protection against radiation

  3. Fast Flux Test Facility project plan. Revision 2

    International Nuclear Information System (INIS)

    The Fast Flux Test Facility (FFTF) Transition Project Plan, Revision 2, provides changes to the major elements and project baseline for the deactivation activities necessary to transition the FFTF to a radiologically and industrially safe shutdown condition

  4. Indiana Bat (Myotis sodalis) Draft Recovery Plan: First Revision

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — U.S. Fish and Wildlife Service's Draft recovery plan for Indiana bats, a Federally endangered species. First revision. The purpose of this draft recovery plan is to...

  5. Sept 2013 NFHL Letter of Map Revision (LOMR)

    Data.gov (United States)

    Earth Data Analysis Center, University of New Mexico — The National Flood Hazard Layer (NFHL) data incorporates all Digital Flood Insurance Rate Map(DFIRM) databases published by FEMA, and any Letters Of Map Revision...

  6. Delmarva Fox Squirrel Recovery Plan Second Revision 1993

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The following recovery plan is the second revision of the Delmarva Fox Squirrel Recovery Plan and is based upon information obtained from previous planning efforts...

  7. An Examination of Data Revisions in the Quarterly National Accounts

    OpenAIRE

    Bermingham, Colin

    2006-01-01

    The paper presents a real time database of economic time series for Ireland. The database contains a record of what was considered official data at each point in time. The database is used to describe the properties of data revisions to the growth rates of GDP and its expenditure components in the Quarterly National Accounts. The revisions, although significant in an absolute sense, are small relative to average growth over the sample by international standards. Nonetheless, using the methodo...

  8. Updated and revised neutron reaction data for 233U

    Institute of Scientific and Technical Information of China (English)

    YU Bao-Sheng; CHEN Guo-Chang; ZHANG Hua; CAO Wen-Tian; TANG Guo-You; TAO Xi

    2013-01-01

    A complete set of n+233U neutron reaction data from 10-5 eV-20 MeV is updated and revised based on the evaluated experimental data and the feedback information of various benchmark tests.The main revised quantities are nubars,cross sections as well as angular distributions,etc.The benchmark tests indicate that the present evaluated data achieve very promising results.

  9. Revision of the JENDL FP Fission Yield Data

    Directory of Open Access Journals (Sweden)

    Katakura Jun-ichi

    2016-01-01

    Full Text Available Some fission yields data of JENDL FP Fission Yields Data File 2011 (JENDL/FPY-2011 revealed inadequacies when applied to delayed neutron related subjects. The sensitivity analyses of decay heat summation calculations also showed some problems. From these results the fission yields of JENDL/FPY-2011 have been revised. The present report describes the revision of the yield data by emphasizing the sensitivity analyses.

  10. Revision of the JENDL FP Fission Yield Data

    Science.gov (United States)

    Katakura, Jun-ichi; Minato, Futoshi; Ohgama, Kazuya

    2016-03-01

    Some fission yields data of JENDL FP Fission Yields Data File 2011 (JENDL/FPY-2011) revealed inadequacies when applied to delayed neutron related subjects. The sensitivity analyses of decay heat summation calculations also showed some problems. From these results the fission yields of JENDL/FPY-2011 have been revised. The present report describes the revision of the yield data by emphasizing the sensitivity analyses.

  11. Revised antitrust guidelines. Forming physician network joint ventures.

    Science.gov (United States)

    Anderson, K R

    1997-02-01

    What do physician executives need to know about antitrust guidelines? This article presents an overview of the revised "Statements of Antitrust Enforcement Policy in the Health Care Area," released in late 1996. Antitrust concepts and implicated federal statutes are described, and implications for forming physician network joint ventures are explored. Requirements of the revised standards used by the agencies to determine a permissible integration are addressed, as well as the factors considered in antitrust scrutiny of physician ventures.

  12. Popliteal lesion due to traction during unicompartmental knee revision surgery☆

    OpenAIRE

    Kerens, Bart; Boonen, Bert; Schotanus, Martijn G.M.; Kort, Nanne P.

    2013-01-01

    Popliteal artery injury is a rare but known complication in knee surgery. Only one article in current literature reports that the risk increases during revision knee surgery. A new case is described in which an injury to the popliteal artery occurred during lateral unicompartmental to total knee arthroplasty revision surgery. This vascular injury occurred 5–10 cm below the tibial resection level in a healthy patient with a history of cruris fracture with plate osteosynthesis and lateral unico...

  13. AGM Revision of Beliefs about Action and Time

    OpenAIRE

    van Zee, Marc; Doder, Dragan; Dastani, Mehdi; Torre, Leendert W. N. van der

    2015-01-01

    The AGM theory of belief revision is based on propositional belief sets. In this paper we develop a logic for revision of temporal belief bases, contain- ing expressions about temporal propositions (to- morrow it will rain), possibility (it may rain tomor- row), actions (the robot enters the room) and pre- and post-conditions of these actions. We prove the Katsuno-Mendelzon and the Darwiche-Pearl repre- sentation theorems by restricting the logic to for- ...

  14. NRC comprehensive records disposition schedule. Revision 3

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-02-01

    Title 44 US Code, ``Public Printing and Documents,`` regulations issued by the General Service Administration (GSA) in 41 CFR Chapter 101, Subchapter B, ``Management and Use of Information and Records,`` and regulations issued by the National Archives and Records Administration (NARA) in 36 CFR Chapter 12, Subchapter B, ``Records Management,`` require each agency to prepare and issue a comprehensive records disposition schedule that contains the NARA approved records disposition schedules for records unique to the agency and contains the NARA`s General Records Schedules for records common to several or all agencies. The approved records disposition schedules specify the appropriate duration of retention and the final disposition for records created or maintained by the NRC. NUREG-0910, Rev. 3, contains ``NRC`s Comprehensive Records Disposition Schedule,`` and the original authorized approved citation numbers issued by NARA. Rev. 3 incorporates NARA approved changes and additions to the NRC schedules that have been implemented since the last revision dated March, 1992, reflects recent organizational changes implemented at the NRC, and includes the latest version of NARA`s General Records Schedule (dated August 1995).

  15. Evaluations of 1990 PRISM design revisions

    Energy Technology Data Exchange (ETDEWEB)

    Van Tuyle, G.J.; Slovik, G.C.; Chan, B.C.; Aronson, A.L.; Kennett, R.J. [Brookhaven National Lab., Upton, NY (United States)

    1992-03-01

    Analyses of the 1990 version of the PRISM Advanced Liquid Metal Reactor (ALMR) design are presented and discussed. Most of the calculations were performed using BNL computer codes, particularly SSC and MINET. In many cases, independent BNL calculations were compared against analyses presented by General Electric when they submitted the PRISM design revisions for evaluation by the Nuclear Regulatory Commission (NRC). The current PRISM design utilizes the metallic fuel developed by Argonne National Laboratory (ANL) which facilitates the passive/``inherent`` shutdown mechanism that acts to shut down reactor power production whenever the system overheats. There are a few vulnerabilities in the passive shutdown, with the most worrisome being the positive feedback from sodium density decreases or sodium voiding. Various postulated unscrammed events were examined by GE and/or BNL, and much of the analysis discussed in this report is focused on this category of events. For the most part, the BNL evaluations confirm the information submitted by General Electric. The principal areas of concern are related to the performance of the ternary metal fuel, and may be resolved as ANL continues with its fuel development and testing program.

  16. NRC comprehensive records disposition schedule. Revision 3

    International Nuclear Information System (INIS)

    Title 44 US Code, ''Public Printing and Documents,'' regulations issued by the General Service Administration (GSA) in 41 CFR Chapter 101, Subchapter B, ''Management and Use of Information and Records,'' and regulations issued by the National Archives and Records Administration (NARA) in 36 CFR Chapter 12, Subchapter B, ''Records Management,'' require each agency to prepare and issue a comprehensive records disposition schedule that contains the NARA approved records disposition schedules for records unique to the agency and contains the NARA's General Records Schedules for records common to several or all agencies. The approved records disposition schedules specify the appropriate duration of retention and the final disposition for records created or maintained by the NRC. NUREG-0910, Rev. 3, contains ''NRC's Comprehensive Records Disposition Schedule,'' and the original authorized approved citation numbers issued by NARA. Rev. 3 incorporates NARA approved changes and additions to the NRC schedules that have been implemented since the last revision dated March, 1992, reflects recent organizational changes implemented at the NRC, and includes the latest version of NARA's General Records Schedule (dated August 1995)

  17. Steady Particle States of Revised Electromagnetics

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2006-07-01

    Full Text Available A revised Lorentz invariant electromagnetic theory leading beyond Maxwell’s equations, and to a form of extended quantum electrodynamics, has been elaborated on the basis of a nonzero electric charge density and a nonzero electric field divergence in the vacuum state. Among the applications of this theory, there are steady electromagnetic states having no counterpart in conventional theory and resulting in models of electrically charged and neutral leptons, such as the electron and the neutrino. The analysis of the electron model debouches into a point-charge-like geometry with a very small characteristic radius but having finite self-energy. This provides an alternative to the conventional renormalization procedure. In contrast to conventional theory, an integrated radial force balance can further be established in which the electron is prevented from “exploding” under the action of its net self-charge. Through a combination of variational analysis and an investigation of the radial force balance, a value of the electronic charge has been deduced which deviates by only one percent from that obtained in experiments. This deviation requires further investigation. A model of the neutrino finally reproduces some of the basic features, such as a small but nonzero rest mass, an angular momentum but no magnetic moment, and long mean free paths in solid matter.

  18. Evaluating the Chinese Revised Controlling Behaviors Scale.

    Science.gov (United States)

    Tiwari, Agnes; Fong, Daniel Yee Tak; Chan, Ko Ling; Yan, Elsie Chau Wai; Lam, Gloria Ling Lee; Tang, Debbie Hoi Ming; Graham-Kevan, Nicola

    2015-01-01

    The present study evaluated the utility of the Chinese version of the Revised Controlling Behaviors Scale (C-CBS-R) as a measure of controlling behaviors in violent Chinese intimate relationships. Using a mixed-methods approach, in-depth, individual interviews were conducted with 200 Chinese women survivors to elicit qualitative data about their personal experiences of control in intimate relationships. The use of controlling behaviors was also assessed using the C-CBS-R. Interview accounts suggested that the experiences of 91 of the women were consistent with the description of coercive control according to Dutton and Goodman's conceptualization of coercion. Using the split-half validation procedure, a receiver operating characteristics (ROC) curve analysis was conducted with the first half of the sample. The area under the curve (AUC) for using the C-CBS-R to identify high control was .99, and the cutoff score of 1.145 maximized both sensitivity and specificity. Applying the cutoff score to the second half gave a sensitivity of 96% and a specificity of 95%. Overall, the C-CBS-R has demonstrated utility as a measure of controlling behaviors with a cutoff score for distinguishing high from low levels of control in violent Chinese intimate relationships. PMID:24860075

  19. THE FRENCH REGULATION SCHOOL: A CRITICAL REVISION

    Directory of Open Access Journals (Sweden)

    Natalia, Gajst

    2010-01-01

    Full Text Available The French regulation school sets out to carry out an analysis of Capitalism and its transformations, with the purpose of understanding the periods of stable growth and the moments of structural change. The object of this paper consists of carrying out a critical revision of the contributions of this school, concentrating on the conceptual framework that it has developed. For this, in the first place the influences that marked the regulation approach will be reviewed, with special attention on its recovery from the Marxist tradition. Secondly, the ontological and methodological differences between the regulation approach and the neoclassic economy theory will be highlighted. Thirdly, the fundamental concepts of the regulation school will be examined. In fourth place, it will be seen how, from these concepts, the crisis at the beginning of the 1970s was interpreted. In fifth place, how the regulation approach is thought as to the relation between economy and policy. In sixth place, the question of the international dimension will be examined. Finally, the main objections that have been presented to the regulation approach, will be shown and will be evaluated critically.

  20. Revising the Competitiveness Index using factor analysis.

    Science.gov (United States)

    Houston, John; Harris, Paul; McIntire, Sandra; Francis, Dientje

    2002-02-01

    The Competitiveness Index is a 20-item true-false measure designed to assess the desire to win in interpersonal situations. To develop a more psychometrically sound form of the scale, 213 undergraduates were administered the original form and a modified version containing a 5-point Likert-type scale. An initial principal component analysis using a varimax rotation of the modified version yielded a four-factor solution accounting for 54.5% of the explained variance. Based on a subsequent reliability analysis. six items were dropped from the modified scale. A second analysis produced a two-factor solution accounting for 54.1% of the explained variance. Both factors (Enjoyment of Competition and Contentiousness) formed reliable subscales. The 14-item Revised Competitiveness Index had high internal consistency and was positively correlated with the original Competitiveness Index, the competitiveness subscales of the Work and Family Orientation Questionnaire, the Sports Orientation Questionnaire, and the Nach Naff measure of Need for Achievement. PMID:11899003

  1. Steady Particle States of Revised Electromagnetics

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2006-07-01

    Full Text Available A revised Lorentz invariant electromagnetic theory leading beyond Maxwell's equations, and to a form of extended quantum electrodynamics, has been elaborated on the basis of a nonzero electric charge density and a nonzero electric field divergence in the vacuum state. Among the applications of this theory, there are steady electromagnetic states having no counterpart in conventional theory and resulting in models of electrically charged and neutral leptons, such as the electron and the neutrino. The analysis of the electron model debouches into a point-charge-like geometry with a very small characteristic radius but having finite self-energy. This provides an alternative to the conventional renormalization procedure. In contrast to conventional theory, an integrated radial force balance can further be established in which the electron is prevented from "exploding" under the action of its net self-charge. Through a combination of variational analysis and an investigation of the radial force balance, a value of the electronic charge has been deduced which deviates by only one percent from that obtained in experiments. This deviation requires further investigation. A model of the neutrino finally reproduces some of the basic features, such as a small but nonzero rest mass, an angular momentum but no magnetic moment, and long mean free paths in solid matter.

  2. Bayesian Revision of Residual Detection Power

    Science.gov (United States)

    DeLoach, Richard

    2013-01-01

    This paper addresses some issues with quality assessment and quality assurance in response surface modeling experiments executed in wind tunnels. The role of data volume on quality assurance for response surface models is reviewed. Specific wind tunnel response surface modeling experiments are considered for which apparent discrepancies exist between fit quality expectations based on implemented quality assurance tactics, and the actual fit quality achieved in those experiments. These discrepancies are resolved by using Bayesian inference to account for certain imperfections in the assessment methodology. Estimates of the fraction of out-of-tolerance model predictions based on traditional frequentist methods are revised to account for uncertainty in the residual assessment process. The number of sites in the design space for which residuals are out of tolerance is seen to exceed the number of sites where the model actually fails to fit the data. A method is presented to estimate how much of the design space in inadequately modeled by low-order polynomial approximations to the true but unknown underlying response function.

  3. DWPF waste form compliance plan (Draft Revision)

    International Nuclear Information System (INIS)

    The Department of Energy currently has over 100 million liters of high-level radioactive waste in storage at the Savannah River Site (SRS). In the late 1970's, the Department of Energy recognized that there were significant safety and cost advantages associated with immobilizing the high-level waste in a stable solid form. Several alternative waste forms were evaluated in terms of product quality and reliability of fabrication. This evaluation led to a decision to build the Defense Waste Processing Facility (DWPF) at SRS to convert the easily dispersed liquid waste to borosilicate glass. In accordance with the NEPA (National Environmental Policy Act) process, an Environmental Impact Statement was prepared for the facility, as well as an Environmental Assessment of the alternative waste forms, and issuance of a Record of Decision (in December, 1982) on the waste form. The Department of Energy, recognizing that start-up of the DWPF would considerably precede licensing of a repository, instituted a Waste Acceptance Process to ensure that these canistered waste forms would be acceptable for eventual disposal at a federal repository. This report is a revision of the DWPF compliance plan

  4. A revision of Neodiplothele (Araneae: Mygalomorphae: Barychelidae

    Directory of Open Access Journals (Sweden)

    Hector M.O. Gonzalez-Filho

    2015-06-01

    Full Text Available The Neotropical Sasoninae Neodiplothele Mello-Leitão, 1917 is revised and now includes eight species. Neodiplothele can be distinguished from other Sasoninae by the absence of the posterior median spinnerets and differs Neotropical relatives as Cosmopelma by the absence of cuspules on coxae of leg I and Paracenobiopelma by the absence of cuspules on the labium. The male of N. irregularis Mello-Leitão, 1917 and N. picta Vellard, 1924 are described and illustrated for the first time. Neodiplothele leonardosi Mello-Leitão, 1939 is considered a junior synonym of N. irregularis. Five new species are described from Brazil: N. aureus sp. nov. from the states of Ceará, Rio Grande do Norte, Paraíba, and Minas Gerais, N. itabaiana sp. nov. from Sergipe, N. martinsi sp. nov. from Bahia, Espírito Santo, and Minas Gerais, N. indicattii sp. nov. from Espírito Santo, Minas Gerais, Rio de Janeiro, and São Paulo, N. caucaia sp. nov. from Ceará, Goiás, and Mato Grosso do Sul. Two informal groups are proposed based on genitalia morphology: irregularis group and picta group. An identification key and new distribution records for all known species are given.

  5. Revision Total Hip Replacement: A Case Report

    Directory of Open Access Journals (Sweden)

    Md Hafizur Rahman

    2013-07-01

    Full Text Available Total hip replacement is a reconstructive procedure that has improved the management of those diseases of the hip joint that have responded poorly to conventional medical therapy. Conventional, primary total hip replacement is a durable operation in the majority of patients. A hip replacement is a mechanical device with parts that are assembled before and during the operation. But the possible complications of total hip arthroplasty, and its clinical performance over time, is a challenging occasion to the surgeons, and such a challenge we faced with our presenting patient. A 68 year old lady with history of cemented bipolar hemiarthroplasty done in a tertiary care hospital, due to fracture neck of the left femur having the history of diabetes, chronic kidney disease, heart disease, anaemia, and mental disorders presented with loosened prosthesis, thinning of medial proximal cortex of the femur which had broken within few months after surgery. She complained of painful walking at left hip joint. There was also evidence of chronic infective and degenerative arthritis of acetabular component of the affected hip joint. Cemented revision total hip replacement surgery was performed with expert multidisciplinary involvement. On 2nd postoperative day the patient was allowed to walk on operated limb with the aid of walker. On 12th postoperative day all the stitches were removed and wound was found healthy.

  6. The Ways of Coping Checklist: Revision and Psychometric Properties.

    Science.gov (United States)

    Vitaliano, P P; Russo, J; Carr, J E; Maiuro, R D; Becker, J

    1985-01-01

    This study examined the psychometric properties of the "original" seven factored scales derived by Aldwin et al. from Folkman and Lazarus' Ways of Coping Checklist (WCCL) versus a revised set of scales. Four psychometric properties were examined including the reproducibility of the factor structure of the original scales, the internal consistency reliabilities and intercorrelations of the original and the revised scales, the construct and concurrent validity of the scales, and their relationships to demographic factors. These properties were studied on three distressed samples: 83 psychiatric outpatients, 62 spouses of patients with Alzheimer's disease, and 425 medical students. The revised scales were consistently shown to be more reliable and to share substantially less variance than the original scales across all samples. In terms of construct validity, depression was positively related to the revised Wishful Thinking Scale and negatively related to the revised Problem-Focused Scale consistently across samples. Anxiety was also related to these scales, and in addition, it was positively related to the Seeks Social Support Scale across samples. The Mixed Scale was the only original scale that was consistently related to depression and anxiety across the three samples. Evidence for concurrent validity was provided by the fact that medical students in group therapy had significantly higher original and revised scale scores than students not participating in such groups. Both sets of scales were shown to be generally free of demographic biases. PMID:26776273

  7. Translation Expert (TranslationQ & RevisionQ): Automated translation process with real-time feedback & evaluation/ revision with PIE

    OpenAIRE

    Steurs, Frieda; Segers, Winibert; Kockaert, Hendrik

    2015-01-01

    Translation Expert (TranslationQ & RevisionQ): Automated translation process with real-time feedback & evaluation/ revision with PIE Winibert Segers, Hendrik Kockaert & Frieda Steurs KU Leuven This paper reports on an experiment working with a new evaluation technique for translator training. Organizing high level translation classes in a master in translation involves intensive assessment of the work delivered by the students. The evaluation has to be precise, professional, and at...

  8. Chess Revision: Acquiring the Rules of Chess Variants through FOL Theory Revision from Examples

    Science.gov (United States)

    Muggleton, Stephen; Paes, Aline; Santos Costa, Vítor; Zaverucha, Gerson

    The game of chess has been a major testbed for research in artificial intelligence, since it requires focus on intelligent reasoning. Particularly, several challenges arise to machine learning systems when inducing a model describing legal moves of the chess, including the collection of the examples, the learning of a model correctly representing the official rules of the game, covering all the branches and restrictions of the correct moves, and the comprehensibility of such a model. Besides, the game of chess has inspired the creation of numerous variants, ranging from faster to more challenging or to regional versions of the game. The question arises if it is possible to take advantage of an initial classifier of chess as a starting point to obtain classifiers for the different variants. We approach this problem as an instance of theory revision from examples. The initial classifier of chess is inspired by a FOL theory approved by a chess expert and the examples are defined as sequences of moves within a game. Starting from a standard revision system, we argue that abduction and negation are also required to best address this problem. Experimental results show the effectiveness of our approach.

  9. Revised reference values for selenium intake.

    Science.gov (United States)

    Kipp, A P; Strohm, D; Brigelius-Flohé, R; Schomburg, L; Bechthold, A; Leschik-Bonnet, E; Heseker, H

    2015-10-01

    The German, Austrian and Swiss nutrition societies are the joint editors of the 'reference values for nutrient intake'. They have revised the reference values for the intake of selenium and published them in February 2015. The saturation of selenoprotein P (SePP) in plasma is used as a criterion for the derivation of reference values for selenium intake in adults. For persons from selenium-deficient regions (China) SePP saturation was achieved with a daily intake of 49μg of selenium. When using the reference body weights the D-A-CH reference values are based upon, the resulting estimated value for selenium intake is 70μg/day for men and 60μg/day for women. The estimated value for selenium intake for children and adolescents is extrapolated using the estimated value for adults in relation to body weight. For infants aged 0 to under 4 months the estimated value of 10μg/day was derived from the basis of selenium intake via breast milk. For infants aged 4 to under 12 months this estimated value was used and taking into account the differences regarding body weight an estimated value of 15μg/day was derived. For lactating women compared to non-lactating women a higher reference value of 75μg/day is indicated due to the release of selenium with breast milk. The additional selenium requirement for pregnant women is negligible, so that no increased reference value is indicated. PMID:26302929

  10. A revision of Clematis sect. Atragene (Ranunculaceae)

    Institute of Scientific and Technical Information of China (English)

    Wen-Jing YANG; Liang-Qian LI; Lei XIE

    2009-01-01

    Clematis sect. Atragene is revised in this paper based on the examination of a large number of herbarium specimens, extensive field observations, and morphometric analyses. Brief taxonomic history and geographical distribution of the section are given, the relationships among the species are discussed, and the evolutionary trends of some characters in the section are evaluated. The staminodes of the plants in this section may have evolved from the outer stamens with petaloid filaments and gradually disappearing anthers. Subsequently, they may have evolved in two different ways. One possibility is that the staminodes elongate and become lanceolate, as long as sepals, and their apices turn into attenuate. The other is that the staminodes are spathulate, but not elongating, as long as stamens, and their apices turn into retuse from obtuse and rounded. The evolutionary trend of sepals may be from thin to thick in texture, and the veins from non-prominent to prominent. As a result, five new series are established and nine species, two subspecies and nine varieties (including three new ranks) are recognized in this section. An identification key is provided, and each taxon is described and illustrated. Clematis sibirica and Clematis ochotensis are treated as subspecies of Clematis alpina due to their subtle differences and lack of, or few, overlapping distributions. Clematis fusijamana and Clematisfauriei are recognized as varieties of C. alpina ssp. ochotensis for the continuous variation of the velutinous strips on the sepal margins. Clematis iliensis is treated as variety of C. alpina ssp. sibirica for the continuous variation of leaf division types. Extensive variations in sepal color and basal caruncle size support degrading Clematis chiisanensis as a variety of Clematis koreana. The North American ser. Occientales may be primitive, whereas ser. Macropetalae may be the most advanced taxon in this section. Ser. Alpinae and ser. Koreanae are closely related to each

  11. Revising China's energy consumption and carbon emissions

    Science.gov (United States)

    Liu, Z.

    2015-12-01

    China is the world's largest carbon emitter and takes the lion's share of new increased emission since 2000, China's carbon emissions and mitigation efforts have received global attentions (Liu et al., Nature 500, 143-145)1. Yet China's emission estimates have been approved to be greatly uncertain (Guan et al., Nature Climate Change 2, 672-675)2. Accurate estimation becomes even crucial as China has recently pledged to reach a carbon emission peak by 2030, but no quantitative target has been given, nor is it even possible to assess without a reasonable baseline. Here we produced new estimates of Chinese carbon emissions for 1950-2012 based on a new investigation in energy consumption activities and emission factors using extensively surveyed and experimental data from 4243 mines and 602 coal samples. We reported that the total energy consumption is 10% higher than the nationally published value. The investigated emission factors used in China are significantly (40%) different from the IPCC default values which were used in drawing up several previous emission inventories. The final calculated total carbon emissions from China are 10% different than the amount reported by international data sets. The new estimate provides a revision of 4% of global emissions, which could have important implications for global carbon budgets and burden-sharing of climate change mitigation. 1 Liu, Z. et al. A low-carbon road map for China. Nature 500, 143-145 (2013). 2 Guan, D., Liu, Z., Geng, Y., Lindner, S. & Hubacek, K. The gigatonne gap in China's carbon dioxide inventories. Nature Climate Change, 672-675 (2012).

  12. Two-Stage Revision Anterior Cruciate Ligament Reconstruction.

    Science.gov (United States)

    Erickson, Brandon J; Cvetanovich, Gregory; Waliullah, Khalid; Khair, Michael; Smith, Patrick; Bach, Bernard; Sherman, Seth

    2016-05-01

    The number of primary anterior cruciate ligament (ACL) tears is rapidly increasing. In patients who wish to return to their preoperative level of function, specifically as it pertains to participation in sports, the gold standard of treatment following an ACL tear remains an anterior cruciate ligament (ACL) reconstruction. Despite a majority of good/excellent results following primary ACL reconstruction, there is a growing subset of patients with persistent or recurrent functional instability who require revision ACL reconstruction. Preoperative planning for revision ACL reconstruction requires a careful understanding of the root cause of ACL failure, including possible technical causes of primary ACL failure and the presence of combined knee pathology that was not addressed at the index ACL reconstruction. The decision to perform 2-stage revision ACL reconstruction is multifactorial and is reached by technical considerations that may make a 1-stage revision less optimal, including tunnel widening, arthrofibrosis, active infection, and others. Concomitant knee pathology such as meniscal deficiency, malalignment (including an increase in posterior tibial slope), chondral lesions, and other ligamentous laxity may also require a staged approach to treatment. This evidence-based review covers the indications for 2-stage revision ACL reconstruction, surgical techniques, evidence for and technique of bone grafting prior ACL tunnels, and outcomes of 2-stage revision stratified by initial cause of ACL reconstruction failure. With proper preoperative planning and an understanding of the cause of failure following the primary ACL reconstruction, revision ACL reconstruction can offer excellent outcomes in the motivated patient. [Orthopedics. 2016; 39(3):e456-e464.]. PMID:27045480

  13. Intraoperative Radiation Exposure During Revision Total Ankle Replacement.

    Science.gov (United States)

    Roukis, Thomas S; Iceman, Kelli; Elliott, Andrew D

    2016-01-01

    Intraoperative C-arm image intensification is required for primary total ankle replacement implantation. Significant radiation exposure has been linked to these procedures; however, the radiation exposure during revision total ankle replacement remains unknown. Therefore, we sought to evaluate the radiation exposure encountered during revision total ankle replacement. The data from 41 patients were retrospectively analyzed from a prospective database: 19 Agility(™) to Agility(™); 4 Agility(™) to Custom Agility(™); 9 Agility(™) to INBONE(®) II; 5 Agility(™) to Salto Talaris(®) XT; 2 Scandinavian Total Ankle Replacement Prosthesis to Salto Talaris(®) XT; and 2 INBONE(®) I to INBONE(®) II revision total ankle replacements were performed. Two broad categories were identified: partial revision (Agility(™) to Agility(™), Agility(™) to Custom Agility(™), INBONE(®) I to INBONE(®) II) and complete conversion (Agility(™) to INBONE(®) II, Agility(™) to Salto Talaris(®) XT, Scandinavian Total Ankle Replacement Prosthesis to Salto Talaris(®) XT). The mean radiation exposure per case was significant at 3.49 ± 2.21 mGy. Complete conversions, specifically Agility(™) to INBONE(®) II, exhibited the greatest radiation exposure and C-arm time. Revision implant selection and revision type (complete or partial) directly contributed to radiation exposure. Accordingly, revision systems requiring less radiation exposure are preferable. Surgeons should strive to minimize intraoperative complications and limit additional procedures to those necessary, because both lead to additional radiation exposure.

  14. Draft revision of human factors guideline HF-010

    International Nuclear Information System (INIS)

    The Application of Human Factors to the design of Man-Machine Interfaces System(MMIS) in the nuclear power plant is essential to the safety and productivity of the nuclear power plants, human factors standards and guidelines as well as human factors analysis methods and experiments are weightily used to the design application. A Korean engineering company has developed a human factors engineering guideline, so-call HF-010, and has used it for human factors design, however the revision of HF-010 is necessary owing to lack of the contents related to the advanced MMI(Man-Machine Interfaces). As the results of the reviews of HF-010, it is found out that the revision of Section 9. Computer Displays of HF-010 is urgent, thus the revision was drafted on the basis of integrated human factors design guidelines for VDT, human factors design guidelines for PMAS SPADES display, human factors design guidelines for PMAS alarm display, and human factors design guidelines for electronic displays developed by the surveillance and operation support project of KOICS. The draft revision of HF-010 Section 9 proposed in this report can be utilized for the human factors design of the advanced MMI, and the high practical usability of the draft can be kept up through the continuous revision according to the advancement of digital technology

  15. Revision stapedectomy for incus erosion: long-term hearing.

    Science.gov (United States)

    Krieger, L W; Lippy, W H; Schuring, A G; Rizer, F M

    1998-10-01

    One of the most common ossicular problems in revision stapedectomy is the eroded incus. Revision surgery has been reported as successful in 70% to 80% of cases at 1 year. Little is written about long-term results or the association of erosion with various prostheses. We evaluated 83 cases from 1 to 20 years, including multiple revisions. In 23 cases the erosion was seen at initial stapedectomy. Surgery was performed with the patient under local anesthesia, with the use of the Lippy modified prosthesis. Initial success was seen in 72% (41/57), satisfactory results in 90%, no change in 5%, and none worse. At 10 years, success had declined to 50% (7 of 14), with 80% satisfactory. The numbers for multiple revisions were lower. Success in nonrevision cases was 90% (21 of 23), dropping to 86% at 10 years, with satisfactory results in 100%. The type of prosthesis associated with erosion was a crimped wire in 34% (24 of 70), a plastic strut in 23%, and a Robinsion prosthesis in 17%. We conclude that the risk of incus erosion appears less with the Robinson prosthesis. The Lippy modified prosthesis yields good long-term results, particularly when erosion is seen at initial stapedectomy. Results worsen with subsequent revision. PMID:9781993

  16. Revision of genus Steindachneridion (Siluriformes: Pimelodidae

    Directory of Open Access Journals (Sweden)

    Julio Cesar Garavello

    2005-12-01

    Full Text Available After several years collecting in the type-localities and studying representative samples of genus Steindachneridion Eigenmann & Eigenmann, 1919 from Brazilian and foreign museums, a taxonomic revision of the Recent species of the genus is presented, including the description of a new species from the rio Iguaçu, above the great falls. Steindachneridion species are large sized fishes, reaching 1000 mm total length or more, and sharing some anatomical characters that, at least tentatively, support the monophyly of the genus. In addition to the general features found in the Pimelodidae, the species S. amblyurum (Eigenmann & Eigenmann, 1888, S. parahybae (Steindachner, 1877, S. doceanum (Eigenmann & Eigenmann, 1889, S. scriptum (Miranda Ribeiro, 1918, S. punctatum (Miranda Ribeiro, 1918, and S. melanodermatum, new species, share the shape of the vomer tooth plates, six to eight branched rays in the dorsal-fin, and a low number of gill-rakers. All species, except fossil ones, are redescribed and a key for their identification is provided.Após vários anos coletando nas localidades tipo e estudando amostras representativas de museus brasileiros e estrangeiros, é apresentada uma revisão taxonômica das espécies Recentes do gênero Steindachneridion Eigenmann & Eigenmann, 1919, incluindo a descrição de uma espécie nova da bacia do rio Iguaçu, acima das Cataratas do Iguaçu. Em comum, os adultos de todas as espécies apresentam grande porte, até 1000 mm ou mais de comprimento padrão e compartilham alguns caracteres anatômicos discutidos neste estudo, que pelo menos preliminarmente suportam o monofiletismo do gênero. Além das características gerais de Pimelodidae, S. amblyurum (Eigenmann & Eigenmann, 1888, S. parahybae (Steindachner, 1877, S. doceanum (Eigenmann & Eigenmann, 1889, S. scriptum (Miranda Ribeiro, 1918, S. punctatum (Miranda Ribeiro, 1918 e S. melanodermatum, espécie nova, têm em comum a forma das placas dentígeras do

  17. Endoscopic Revision (StomaphyX versus Formal Surgical Revision (Gastric Bypass for Failed Vertical Band Gastroplasty

    Directory of Open Access Journals (Sweden)

    Johan Bolton

    2013-01-01

    Full Text Available Background. Weight regain secondary to VBG pouch dilation is a typical referral for Bariatric surgeons. In this study we compare an endoluminal pouch reduction (Stomaphyx to RYGB for revision. Methods. A retrospective review was completed for patients with a previous VBG presenting with weight regain between 2003–2010. Results. Thirty patients were identified for study 23 RYGB, 14 StomaphyX. Significant post procedure BMI loss was seen in each cohort (RYGB, 47.7 ± 7 kg/m2 to 35 ± 7 kg/m2; StomaphyX 43 ± 10 kg/m2 to 40 ± 9 kg/m2, P=0.0007. Whereas nausea and headache were the only complications observed in StomaphyX patients, the RYGB group had a 43.5% complication rate and 1 mortality. Complications following RYGB include: incisional hernia (13%, anastomotic leak (8.7%, respiratory failure (8.7%, fistula (8.7%, and perforation (4.35%. The median length of stay following RYGB was 6 days compared to 1.5 ± 0.5 days following StomaphyX. Conclusion. This study suggests that while RYGB revision may achieve greater weight loss, the complication rates and severity is discouraging. StomaphyX may be a safe alternative. Further technical modifications of the device and longer follow-up may clarify the role of this approach.

  18. Planned revision to DOE Order 5820.2A, Radioactive Waste Management

    Energy Technology Data Exchange (ETDEWEB)

    Duggan, G.J. [Dept. of Energy, Washington, DC (United States); Williams, R.E.; Kudera, D.E. [EG and G Idaho, Inc., Idaho Falls, ID (United States). Idaho National Engineering Lab.; Bailey, D.E. [NJG, Inc. (United States)

    1993-03-01

    US Department of Energy Headquarters initiated efforts to revise DOE Order 5820.2A, ``Radioactive Waste Management``. The purpose of the revision is to enhance DOE waste management requirements, reflect new DOE organizational responsibilities, and consolidate requirements for management of all waste, under the responsibility of Environmental Restoration and Waste Management, into a single order. This paper discusses the revision philosophy, objectives of the revision, and strategy for the revision. Issues being considered for inclusion in the revision and recommended methods of resolving each issue are also discussed.

  19. Efficacy of Peer Revision in Process-oriented Writing

    Institute of Scientific and Technical Information of China (English)

    邓雪梅

    2013-01-01

      Peer revision is a collaborative activity during which student writers can exchange drafts and make suggestions for im⁃provement. It has been widely used at present in process-oriented writing instruction. In this paper, the researcher carried out an empirical study about the effects and efficacy of peer revision on a group of Chinese Juniors majoring in English. It was found that student writers focused specially on grammar and vocabulary in PE session and organization was the least attended to. PE was quite effective in improving the overall writing quality, as the participants did incorporate most of the revisions suggested by their peers. However, the influences of students’writing proficiencies and of the rhetorical modes of the writing tasks on the effects of PE were proved to be not very significant.

  20. REVISION AND REWRITING IN OFFICIAL DOCUMENTS: CONCEPTS AND METHODOLOGICAL ORIENTATIONS

    Directory of Open Access Journals (Sweden)

    Renilson José MENEGASSI

    2014-12-01

    Full Text Available The text discuss how the concepts and the methodological orientations about text revision and rewriting processes, in teaching context, are conceived, presented and guide the Portuguese Language teacher’s work. To this end, the concepts of revision and rewriting are characterized in four Brazilian official documents, two from national scope and two from Paraná state. The information was organized from what the documents show about the teacher and student attitude face to the investigated concepts, which determine the methodological orientations to the text production work. The results show irregularities in these processes handling, highlighting one of the official documents, from national scope, as the one that presents more suitable methodological and conceptual orientations. It shows that the documents which guide the mother language teaching in the country are still not appropriately discussing the writing text production process, specifically the revision and rewriting, even in more recent documents.

  1. Nyttan med Revision : Med fokus på "kundnytteaspekter"

    OpenAIRE

    Mistry, Vibhuti; Avdija, Besnik

    2011-01-01

    Sammanfattning Den 1 november 2010 avskaffades revisionsplikten som innebär att 72 % av aktiebolagen i Sverige har berörts av den nya lagen. Detta medför till att valmöjligheten för fri revision är öppen för privata aktiebolag som underskrider gränsvärdet. Lagen om frivillig revision har påverkat revisorns roll och ansvar samtidigt som själva yrket har förändrats och gått mer mot rådgivning. Därmed har det blivit viktigt att klargöra nyttan med revision för att kunna visa värdet för småföreta...

  2. Impression formation and revision in social anxiety disorder.

    Science.gov (United States)

    Haker, Ayala; Aderka, Idan M; Marom, Sofi; Hermesh, Haggai; Gilboa-Schechtman, Eva

    2014-03-01

    Interpersonal relations are markedly impaired in social anxiety. Yet, little is known about the ways social anxiety affects social cognition. We examined impression formation and impression revision among individuals with social anxiety disorder (SAD, n = 26) and non-anxious individuals (n = 29). Participants read initial descriptions of protagonists depicted as dominant, neutral or submissive and rated them on social rank and affiliation dimensions. Next, participants were presented with behavioral acts that were either congruent, incongruent or irrelevant to the initial descriptions, and re-rated the protagonists. Individuals with SAD (a) rated others as more extreme on social rank dimension, (b) rated others as lower on the affiliation dimension, and (c) revised their impressions of others to a greater extent than did the non-anxious individuals. Understanding the ways social anxiety affects the formation and revision of perceptions of others can improve our understanding of maintaining processes in SAD. PMID:23774009

  3. Predictors of bone loss in revision total knee arthroplasty.

    Science.gov (United States)

    Bloomfield, Michael R; Klika, Alison K; Lee, Ho H; Joyce, David M; Mehta, Priyesh; Barsoum, Wael K

    2010-03-01

    Revision total knee arthroplasty (RTKA) requires preoperative planning to enable the reconstruction of bony deficiencies. The objective of this project was to identify predictors of bone loss management at RTKA based on the preoperative failure mode and patient demographics known preoperatively. We retrospectively reviewed 245 consecutive RTKA procedures in which the same revision knee system was utilized. Patient demographic and treatment data were recorded, and locations of bone loss were identified based on the reconstructive management. We identified significant predictors for use of femoral augments at all four positions. Several predictors significantly predisposed to use of a thick (>19 mm) polyethylene; however, no predictors of tibial augments were significant. Although the reconstruction of bone loss is primarily based on the intraoperative assessment, these findings may provide additional information to help the surgeon prepare for difficult revision procedures. PMID:20812582

  4. Facilitating children's eyewitness recall with the revised cognitive interview.

    Science.gov (United States)

    McCauley, M R; Fisher, R P

    1995-08-01

    Eighty-six 2nd-grade children participated in a Simon says game with an unfamiliar adult. The children were subsequently interviewed twice with either a standard interview or the revised cognitive interview (CI), once within 3 hr of the event and then 2 weeks later. On both the initial interview and the 2-week delayed interview, children receiving the revised CI recalled significantly more correct information than did children receiving a standard interview. In addition, children who were interviewed twice with the revised CI recalled more unique accurate facts (M = 25.44) than children who received 2 standard interviews (M = 16.75). The CI also elicited more inaccurate facts; however, the accuracy rate (proportion of reported facts that were accurate) for the 2 groups was equivalent. The research has implications for police and others who interview real child victims and witnesses. PMID:7642461

  5. Revised accident source terms for light-water reactors

    Energy Technology Data Exchange (ETDEWEB)

    Soffer, L. [Nuclear Regulatory Commission, Washington, DC (United States)

    1995-02-01

    This paper presents revised accident source terms for light-water reactors incorporating the severe accident research insights gained in this area over the last 15 years. Current LWR reactor accident source terms used for licensing date from 1962 and are contained in Regulatory Guides 1.3 and 1.4. These specify that 100% of the core inventory of noble gases and 25% of the iodine fission products are assumed to be instantaneously available for release from the containment. The chemical form of the iodine fission products is also assumed to be predominantly elemental iodine. These assumptions have strongly affected present nuclear air cleaning requirements by emphasizing rapid actuation of spray systems and filtration systems optimized to retain elemental iodine. A proposed revision of reactor accident source terms and some im implications for nuclear air cleaning requirements was presented at the 22nd DOE/NRC Nuclear Air Cleaning Conference. A draft report was issued by the NRC for comment in July 1992. Extensive comments were received, with the most significant comments involving (a) release fractions for both volatile and non-volatile species in the early in-vessel release phase, (b) gap release fractions of the noble gases, iodine and cesium, and (c) the timing and duration for the release phases. The final source term report is expected to be issued in late 1994. Although the revised source terms are intended primarily for future plants, current nuclear power plants may request use of revised accident source term insights as well in licensing. This paper emphasizes additional information obtained since the 22nd Conference, including studies on fission product removal mechanisms, results obtained from improved severe accident code calculations and resolution of major comments, and their impact upon the revised accident source terms. Revised accident source terms for both BWRS and PWRS are presented.

  6. Revision of the genus Altitatiayus Weinreich(Coleoptera, Lucanidae, Lucaninae

    Directory of Open Access Journals (Sweden)

    Paschoal C. Grossi

    2010-01-01

    Full Text Available Revision of the genus Altitatiayus Weinreich (Coleoptera, Lucanidae, Lucaninae. The South American genus Altitatiayus Weinreich is revised and now includes six species, A. rotundatus (Boileau, A. ruficollis (Lüderwaldt, A. godinhorum (Bomans & Arnaud, A. dulceae (Bomans & Arnaud, A. trifurcatus (Grossi & Racca-Filho and A. koikei sp. nov. (Minas Gerais, Brazil. All species are described and illustrated. For the first time male and female genitalia are illustrated for five species and observations on the behavior of two species are included.

  7. The Revised IRAS-FSC Redshift Catalogue (RIFSCz)

    OpenAIRE

    Wang, L.; Rowan-Robinson, M.; Norberg, P.; Heinis, S.; Han, J.

    2014-01-01

    We present a Revised IRAS-FSC Redshift Catalogue (RIFSCz) of 60,303 galaxies selected at 60 microns from the IRAS Faint Source Catalogue (FSC). This revision merges in data from the WISE All-Sky Data Release, the Tenth SDSS Data Release (DR10), the GALEX All-Sky Survey Source Catalog (GASC), the 2MASS Redshift Survey (2MRS) and the Planck Catalogue of Compact Sources (PCCS). The RIFSCz consists of accurate position, ultra-violet (UV), optical, near-, mid- and far-infrared, sub-millimetre (sub...

  8. Revision of the ISO and EN radiation sterilization standards

    DEFF Research Database (Denmark)

    Miller, A.; Hansen, J.

    2002-01-01

    The radiation sterilization standards, ISO 11137 and EN 552, are now being revised under "ISO lead", with the aim of producing only one international standard, although in four parts: (1) requirements. (2) dose-setting methods, (3) dose-substantiation methods and (4) dosimetry. Several aspects...... of the old standards that have caused problems, when they were used in practice, are addressed in the revision. Input from users of the standards is necessary in order that the standards be developed as useful tools in the documentation of radiation sterilization. (C) 2002 Elsevier Science Ltd. All rights...

  9. Probability and Statistics The Science of Uncertainty (Revised Edition)

    CERN Document Server

    Tabak, John

    2011-01-01

    Probability and Statistics, Revised Edition deals with the history of probability, describing the modern concept of randomness and examining "pre-probabilistic" ideas of what most people today would characterize as randomness. This revised book documents some historically important early uses of probability to illustrate some very important probabilistic questions. It goes on to explore statistics and the generations of mathematicians and non-mathematicians who began to address problems in statistical analysis, including the statistical structure of data sets as well as the theory of

  10. Computer vision approaches to medical image analysis. Revised papers

    International Nuclear Information System (INIS)

    This book constitutes the thoroughly refereed post proceedings of the international workshop Computer Vision Approaches to Medical Image Analysis, CVAMIA 2006, held in Graz, Austria in May 2006 as a satellite event of the 9th European Conference on Computer Vision, EECV 2006. The 10 revised full papers and 11 revised poster papers presented together with 1 invited talk were carefully reviewed and selected from 38 submissions. The papers are organized in topical sections on clinical applications, image registration, image segmentation and analysis, and the poster session. (orig.)

  11. Trabecular metal acetabular revision system (cup-cage construct to address the massive acetabular defects in revision arthroplasty

    Directory of Open Access Journals (Sweden)

    Rajesh Malhotra

    2012-01-01

    Full Text Available The increasing number of total hip replacements in the younger clique has added to the demand for revision procedures. Revision situations are often encountered with infection, loss of bone stock and bone defects. There are various methods of reconstruction of acetabular defects. The management options of type 3B Paprosky acetabular defects are limited with allograft and conventional cages. Trabecular metal technology has evolved to address these bone defects. Trabecular metal acetabular revision system (TMARS cup-cage construct is a new technique to address massive acetabular defects. We describe a case of failed hip reconstruction done for a Giant cell tumour of proximal femur managed by a two stage procedure, initial debridement and second stage reconstruction of acetabulum with TMARS cup-cage construct and femur with allograft prosthesis composite.

  12. 76 FR 28757 - Defense Logistics Agency Revised Regulation 1000.22, Environmental Considerations in Defense...

    Science.gov (United States)

    2011-05-18

    ... of the Secretary Defense Logistics Agency Revised Regulation 1000.22, Environmental Considerations in Defense Logistics Agency Actions AGENCY: Defense Logistics Agency, Department of Defense. ACTION: Notice of Availability (NOA) of Revised Defense Logistics Agency Regulation. SUMMARY: The Defense...

  13. 78 FR 29096 - Approval and Promulgation of Implementation Plans; Tennessee; Transportation Conformity Revisions

    Science.gov (United States)

    2013-05-17

    ... Conformity Revisions AGENCY: Environmental Protection Agency. ACTION: Proposed rule. SUMMARY: EPA is... Control Division, on July 12, 2012. This revision consists of updates to transportation conformity...-related control and mitigation measures. The intended effect is to update the transportation...

  14. 78 FR 10589 - Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality...

    Science.gov (United States)

    2013-02-14

    ... AGENCY 40 CFR Part 52 Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality Management District; Stationary Source Permits AGENCY: Environmental Protection Agency... by California as a revision to the Sacramento Metropolitan Air Quality Management District (SMAQMD...

  15. 78 FR 53270 - Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality...

    Science.gov (United States)

    2013-08-29

    ... AGENCY 40 CFR Part 52 Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality Management District; Stationary Source Permits AGENCY: Environmental Protection Agency... permitting rules submitted by California as a revision to the Sacramento Metropolitan Air Quality...

  16. [An overview on the collation and revision of medical books by the Bureau for Revising Medical Books in the Northern Song Dynasty].

    Science.gov (United States)

    Meng, Yongliang; Liang, Yongxuan

    2014-07-01

    The Bureau for Revising Medical Books was a temporary agency established by the government of the Northern Song Dynasty in 1057, the 2nd year of Jiayou of Emperor Renzong, exclusively for the edition, revision and publishing of ancient medical books. 11 medical books were revised and edited by 13 Bureau members in a period of 12 years until 1069, the 2nd year of Xining of Emperor ShenZong, which eventually became the final versions until today. 8 medical books were initially planned for the revision, but 11 were actually completed in the end. The time for completing a revision varied from over 10 years at most to less than 1 year at least. Instead of working in the office, the officers of the Bureau for Revising Medical Books did their works at home. The members of the said Bureau came from the Tiju officer of the Bureau for Revising Medical Books and the officials of revising medical books, consisting of both Confucian ministers and medical officers. Confucian ministers played an important role in revising medical books. The Bureau had a strict workflow in electing revising officials, making the project, and the determination of the principles and arrangements of the tasks of editing and proofreading. PMID:25429879

  17. REVISED SOCIO-ECONOMIC STATUS SCALE FOR URBAN AND RURAL INDIA – REVISION FOR 2015

    Directory of Open Access Journals (Sweden)

    Guru Raj M.S.

    2015-06-01

    - Economic indicators: Size of operational landholding, Type of house, Availability of clothes, Food security, Sanitation, Ownership of consumer durables, Literacy status, Status of household labour force, Means of livelihood, Status of children (going to school,Type of indebtedness, Reason for migration from household and Preference for financial assistance. However, social transformation and fast growing economy have rendered these scales ineffective in measuring the SES at present. Hence considering present factors two most commonly used classifications i.e. Kuppuswamy classification and the B G Prasad classification has been revised.This revision enables and equips community related scientists in their quest for socioeconomic status.

  18. The impact of seasonal and price adjustments on the predictability of German GDP revisions

    OpenAIRE

    Boysen-Hogrefe, Jens; Neuwirth, Stefan

    2012-01-01

    Releases of the GDP are subject to revisions over time. This paper examines the predictability of German GDP revisions using forecast rationality tests. Previous studies of German GDP covering data until 1997 finds that revisions of real seasonally adjusted GDP are predictable. This paper uses a newly available real-time data to analyze the revisions of real seasonal adjusted GDP, of nominal unadjusted GDP, of the seasonal pattern, and of the GDP deflator for the period between 1992 and 2006....

  19. 76 FR 6368 - Olympic Coast National Marine Sanctuary Regulations Revisions

    Science.gov (United States)

    2011-02-04

    ...On January 14, 2011, NOAA published a proposed rule in the Federal Register to revise the regulations for the Olympic Coast National Marine Sanctuary (76 FR 2611). This notice extends the public comment period stated in that proposed rule by an additional 10...

  20. 75 FR 48585 - Revision of Freedom of Information Act Regulations

    Science.gov (United States)

    2010-08-11

    ... Environmental Quality's (CEQ) regulations governing the disclosure of information pursuant to the requests made... an open manner and providing the public with accurate and timely information about its activities... QUALITY 40 CFR Part 1515 RIN 0331-ZA01 Revision of Freedom of Information Act Regulations AGENCY:...

  1. Revising Geology Labs To Explicitly Use the Scientific Method.

    Science.gov (United States)

    Hannula, Kimberly A.

    2003-01-01

    Proposes that content- or skill-based labs can be revised to explicitly involve the scientific method by asking students to propose hypotheses before making observations. Students' self-assessment showed they felt that they learned a great deal from this style of labs and found the labs to be fun; however, students felt that they learned little…

  2. Financial Accounting System Based Upon NCES Revised Handbook II.

    Science.gov (United States)

    National Center for Education Statistics (DHEW), Washington, DC. Educational Data Standards Branch.

    This publication describes the development and implementation of a school district financial accounting system based on the concepts and guidelines of the National Center for Education Statistics Handbook II, Revised. The system described was designed by school district personnel to utilize computer equipment and to meet the accounting and…

  3. PHMC Year 2000 handbook. Revision 3, Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    Layfield, K.A.

    1998-09-02

    The executive overview is intended to provide an understanding of the primary drivers imposed on the PHMC team to achieve compliance with the Year 2000 problems, the process to achieve compliance and the major responsibilities. Revision 3 contains additions for infrastructure and equipment status reporting guidelines.

  4. 77 FR 54818 - Polychlorinated Biphenyls (PCBs): Revisions to Manifesting Regulations

    Science.gov (United States)

    2012-09-06

    ... AGENCY 40 CFR Part 761 RIN 2050-AG71 Polychlorinated Biphenyls (PCBs): Revisions to Manifesting... manifesting requirements for PCBs under TSCA to the manifesting requirements for hazardous waste under RCRA... bring into alignment, as much as possible, the manifesting requirements for PCBs to those of...

  5. 76 FR 6555 - Loan Guaranty Revised Loan Modification Procedures

    Science.gov (United States)

    2011-02-07

    ... receive any cash back from the modification. (b) If a loan fails to meet one or more of the conditions... AFFAIRS 38 CFR Part 36 RIN 2900-AN78 Loan Guaranty Revised Loan Modification Procedures AGENCY: Department... Veterans Affairs (VA) Loan Guaranty regulation related to modification of guaranteed housing loans...

  6. Revision of the genus Cleistanthus (Euphorbiaceae) in the Philippines

    NARCIS (Netherlands)

    Dressler, Stefan

    1999-01-01

    The Philippine species of the euphorbiaceous genus Cleistanthus are revised. Sixteen species are recognised for this archipelago of which two are recorded from there for the first time. The oldest available combination from the Philippines [C. orgyalis (Blanco) Merr.] remains obscure and three colle

  7. The Revised Gesell Preschool Examination and Later Competence.

    Science.gov (United States)

    Walker, Richard N.

    A sample of 640 children between 2.5 and 6 years old provided norms for scales of the Revised Gesell Preschool Examination. Scales focused on motor, adaptive, verbal, number, and personal and social development. A total of 272 children were reevaluated at 8.5 years on 22 variables derived from teacher ratings, parent questionnaires, and tests. The…

  8. Revised NMR data for incartine: an alkaloid from Galanthus elwesii.

    Science.gov (United States)

    Berkov, Strahil; Reyes-Chilpa, Ricardo; Codina, Carles; Viladomat, Francesc; Bastida, Jaume

    2007-07-12

    Phytochemical studies on Galanthus elwesii resulted in the isolation of five alkaloids: incartine, hordenine, hippeastrine, 8-O-demethylhomolycorine and lycorine. The NMR data given previously for incartine were revised and completed by two-dimensional 1H-1H and 1H-13C chemical shift correlation experiments. In vitro studies on the bioactivity of incartine were carried out.

  9. Revised NMR data for Incartine: an Alkaloid from Galanthus elwesii

    Directory of Open Access Journals (Sweden)

    Jaume Bastida

    2007-07-01

    Full Text Available Phytochemical studies on Galanthus elwesii resulted in the isolation of five alkaloids: incartine, hordenine, hippeastrine, 8-O-demethylhomolycorine and lycorine. The NMR data given previously for incartine were revised and completed by two-dimensional 1H-1H and 1H-13C chemical shift correlation experiments. In vitro studies on the bioactivity of incartine were carried out.

  10. 75 FR 30693 - Revised Medical Criteria for Evaluating Hearing Loss

    Science.gov (United States)

    2010-06-02

    ... ADMINISTRATION 20 CFR Part 404 RIN 0960-AG20 Revised Medical Criteria for Evaluating Hearing Loss AGENCY: Social... Impairments (the listings) that we use to evaluate claims involving hearing loss under titles II and XVI of... knowledge, treatment, and methods of evaluating hearing loss, and public comments we received in response...

  11. Revised Safety Instruction NO. 4 (IS4 REV.)

    CERN Multimedia

    SC Secretariat

    2006-01-01

    Please note that the revised safety instruction No. 4 (IS4 REV.), entitled 'Safety Inspections' is available on the web at the following url: https://edms.cern.ch/file/335741/LAST_RELEASED/E_IS4.pdf Paper copies can be obtained from the SC unit secretariat. SC Secretariat e-mail: sc.secretariat@cern.ch

  12. Revised Safety Instruction NO. 4 (IS4 REV.)

    CERN Multimedia

    2006-01-01

    Please note that the revised safety instruction no. 4 (IS4 REV.), entitled 'Safety Inspections' is available on the web at the following url: https://edms.cern.ch/file/335741/LAST_RELEASED/E_IS4.pdf Paper copies can be obtained from the SC unit secretariat. SC Secretariat e-mail: sc.secretariat@cern.ch

  13. Revised Safety Instruction NO. 4 (IS4 REV.)

    CERN Multimedia

    2006-01-01

    Please note that the revised safety instruction no. 4 (IS4 REV.), entitled 'Safety Inspections' is available on the web at the following url: https://edms.cern.ch/file/335741/LAST_RELEASED/E_IS4.pdf Paper copies can be obtained from the SC unit secretariat. SC Secretariat sc.secretariat@cern.ch

  14. A revision of the genus Humboldtia Vahl (Leguminosae-Caesalpinioideae)

    NARCIS (Netherlands)

    Sanjappa, M.

    1986-01-01

    The genus Humboldtia Vahl is revised and a key to the six species and one variety recognised; their descriptions and distributions are given. All the taxa are confined to Western Ghats in India, except H. laurifolia, which extends southwards into Sri Lanka.

  15. No More Nice Girls: Feminist Art as Revision

    Science.gov (United States)

    Mullarkey, Maureen

    2009-01-01

    Nothing says "the sixties" like the word "revision," and, in keeping with those times, the fledgling feminist art movement dismissed hard-won mastery as "mere skill" and snubbed the canon of Western art as evidence of male dominion over the criteria for legitimacy and achievement. In debunking the myth of the Great (male) Artist, the women's…

  16. Auditory Performance Characteristics of the Computerized Revised Token Test (CRTT)

    Science.gov (United States)

    Eberwein, Cynthia A.; Pratt, Sheila R.; McNeil, Malcolm R.; Fossett, Tepanta R. D.; Szuminsky, Neil J.; Doyle, Patrick J.

    2007-01-01

    Purpose: To assess the Computerized Revised Token Test (CRTT) performance of individuals with normal hearing under several intensity conditions and under several spectral and temporal perturbation conditions. Method: Sixty normal-hearing listeners were randomly assigned to 1 of 3 groups. Group 1 provided performance-intensity information about…

  17. Using Knowledge Management to Revise Software-Testing Processes

    Science.gov (United States)

    Nogeste, Kersti; Walker, Derek H. T.

    2006-01-01

    Purpose: This paper aims to use a knowledge management (KM) approach to effectively revise a utility retailer's software testing process. This paper presents a case study of how the utility organisation's customer services IT production support group improved their test planning skills through applying the American Productivity and Quality Center…

  18. 75 FR 51335 - Revised Medical Criteria for Evaluating Mental Disorders

    Science.gov (United States)

    2010-08-19

    ... Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR); \\6\\ that is, with... categories in the DSM-IV- TR. We propose to change the names of six current listing categories, to remove a...) In the DSM-IV-TR, this category is called ``Delirium, dementia, and amnestic and other...

  19. The association between metal allergy, total hip arthroplasty, and revision

    DEFF Research Database (Denmark)

    Thyssen, Jacob Pontoppidan; Jakobsen, Stig Storgaard; Engkilde, Kåre;

    2009-01-01

    BACKGROUND AND PURPOSE: It has been speculated that the prevalence of metal allergy may be higher in patients with implant failure. We compared the prevalence and cause of revisions following total hip arthroplasty (THA) in dermatitis patients suspected to have contact allergy and in patients in ...

  20. The Theoretical Orientation Profile Scale-Revised: A Validation Study.

    Science.gov (United States)

    Worthington, Roger L.; Dillon, Frank R.

    2003-01-01

    This study supported evidence of reliability and validity of the Theoretical Orientation Profile Scale-Revised (TOPS-R) scores. The TOPS-R was designed to measure theoretical orientation among counselors and trainees. Factor analysis yielded a 6-factor solution accounting for 87.5% of the total variance in the scale. The 6 factors corresponded to…

  1. 40 CFR 35.2111 - Revised water quality standards.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Revised water quality standards. 35... quality standards. After December 29, 1984, no grant can be awarded for projects that discharge into stream segments which have not, at least once since December 29, 1981, had their water quality...

  2. 75 FR 17253 - Revisions to the General Conformity Regulations

    Science.gov (United States)

    2010-04-05

    ... Transportation Conformity Regulations, first published on November 24, 1993 (58 FR 62188) and revised on July 1... actions. The General Conformity Regulations, published on November 30, 1993 (58 FR 63214), cover all other... Conformity Regulations (58 FR 63229) that stated, ``the EPA believes that the following actions...

  3. 42 CFR 426.463 - Future new or revised LCDs.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Future new or revised LCDs. 426.463 Section 426.463 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICARE PROGRAM REVIEW OF NATIONAL COVERAGE DETERMINATIONS AND LOCAL COVERAGE...

  4. A revision of the Anastrepha robusta species group (Diptera: Tephritidae)

    Science.gov (United States)

    The Anastrepha robusta species group is revised to include the following 29 species: A. amaryllis Tigrero (Ecuador), A. amazonensis, n. sp. (Brazil: Amazonas), A. bella, n. sp. (Panamá), A. binodosa Stone (Colombia, Brazil: Amazonas, Pará), A. concava Greene (Costa Rica to Ecuador and Brazil: Amazon...

  5. Visions and Re-Visions of Charles Joseph Minard.

    Science.gov (United States)

    Friendly, Michael

    2002-01-01

    Describes the contributions of Charles Joseph Minard to statistical graphics, noting the time course of his work and providing background on his famous effort, the flow-map depiction of Napoleon's march on Moscow. Explores some modern re-visions of this famous graphic from an information visualization perspective. (SLD)

  6. Practical Nursing, Volume III. Health Occupations Education. [Revised].

    Science.gov (United States)

    Reid, Jamee Noell

    This document is a comprehensive guide for instructors to use in teaching the final phase of the practical nursing program. This revised volume contains information related to medical-surgical nursing, mental health nursing, and career success. The section on medical-surgical nursing is composed of many units, dealing with the following subjects:…

  7. Lifelong Adaptability: A Cultural Literacy Perspective (Revised Edition)

    Science.gov (United States)

    Moyer, John Thayer

    2011-01-01

    This revised 1997 ex post facto study attempted to identify a lifelong adaptability curriculum from a cultural literacy perspective. It investigated students' lifelong adaptability ratings of 15 general school subjects as predicted by family structure, parental age, parental educational level, student cultural literacy, and student gender;…

  8. Group-Theoretical Revision of the Unruh Effect

    Energy Technology Data Exchange (ETDEWEB)

    Calixto, M [Departamento de Matematica Aplicada y Estadistica, Universidad Politecnica de Cartagena, Paseo Alfonso XIII 56, 30203 Cartagena (Spain); Perez-Romero, E; Aldaya, V, E-mail: Manuel.Calixto@upct.es [Instituto de Astrofisica de Andalucia (IAA-CSIC), Apartado Postal 3004, 18080 Granada (Spain)

    2011-03-01

    We revise the Unruh effect (vacuum radiation in uniformly relativistic accelerated frames) in a group-theoretical setting by constructing a conformal SO(4,2)-invariant quantum field theory and its spontaneous breakdown when selecting Poincare invariant degenerated vacua (namely, coherent states of conformal zero modes). Special conformal transformations (accelerations) destabilize the Poincare vacuum and make it to radiate.

  9. Validation of the revised STI-r method

    NARCIS (Netherlands)

    Steeneken, H.J.M.; Houtgast, T.

    2002-01-01

    The revised model for the speech transmission index (STIr, Speech Communication 28 (1999) 109), was validated with an independent set of 68 test conditions. For a subset of 18 conditions, including only additive noise and band-pass limiting, it was veri.ed that the STIr provides a good prediction of

  10. IRIS Toxicological Review of Ammonia (Revised External Review Draft)

    Science.gov (United States)

    In August 2013, EPA submitted a revised draft IRIS assessment of ammonia to the agency's Science Advisory Board (SAB) and posted this draft on the IRIS website. EPA had previously released a draft of the assessment for public comment, held a public meeting about the draft, and ...

  11. A revision of the genus Odontolejeunea (Spruce) Schiffn. (Leujeuneaceae, Hepaticae)

    NARCIS (Netherlands)

    Teeuwen, M.

    1988-01-01

    A taxonomic revision is presented for the epiphyllous liverwort genus Odontolejeunea (Lejeuneaceae subf. Ptychantoideae). Three species are accepted: O. decemdentata (Spruce) Steph.; O. lunulata (Web.) Schiffn. and O. rhomalea (Spruce) Steph. All three species occur in tropical America, and O. lunul

  12. A revision of the genus Odontolejeunea (Spruce) Schiffn. (Leujeuneaceae, Hepaticae)

    OpenAIRE

    Teeuwen, M

    1988-01-01

    A taxonomic revision is presented for the epiphyllous liverwort genus Odontolejeunea (Lejeuneaceae subf. Ptychantoideae). Three species are accepted: O. decemdentata (Spruce) Steph.; O. lunulata (Web.) Schiffn. and O. rhomalea (Spruce) Steph. All three species occur in tropical America, and O. lunulata occurs also in tropical Africa.

  13. Collaborative Revision in L2 Writing: Learners' Reflections

    Science.gov (United States)

    Memari Hanjani, Alireza

    2016-01-01

    L2 learning literature has reflected on the problems surrounding the application of teacher written feedback and peer feedback in EFL contexts. To address the disadvantages of these feedback forms, this exploratory case study examined EFL learners' reactions to a collaborative revision activity. Interview data were collected from eight native…

  14. 77 FR 66650 - Proposed Revisions to Radiation Protection

    Science.gov (United States)

    2012-11-06

    ...The U.S. Nuclear Regulatory Commission (NRC or the Commission) is revising the following sections in Chapter 12, ``Radiation Protection'' and soliciting public comment on NUREG-0800, ``Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition,'' Section 12.1, ``Assuring that Occupational Radiation Exposures Are As Low As Is Reasonably Achievable,''......

  15. Revision of the genus Paratropus Gerstaecker (Coleoptera: Histeridae)

    NARCIS (Netherlands)

    Kanaar, P.

    1997-01-01

    The myrmecophilous and termitophilous genus Paratropus Gerstaecker is revised and figured. A key to the species is given. The number of species in this genus has been brought up to 80, of which 31 species are described as new: P. arriagadai (Tanzania), P. bakxi (Zaire), P. baloghi (Congo, Zaire, Rua

  16. "You Stopped Too Soon": Second Language Children Composing and Revising.

    Science.gov (United States)

    Urzua, Carole

    1987-01-01

    A six-month observational study of Southeast Asian children (N=4) as they wrote and revised various pieces in English (their second language) revealed that the subjects developed three areas of writing skill: a sense of audience, a sense of voice, and a sense of power in language. (Author/CB)

  17. Matrices to Revise Crop, Soil, and Environmental Sciences Undergraduate Curricula

    Science.gov (United States)

    Savin, Mary C.; Longer, David; Miller, David M.

    2005-01-01

    Undergraduate curricula for natural resource and agronomic programs have been introduced and revised during the past several decades with a desire to stay current with emerging issues and technologies relevant to constituents. For the past decade, the Department of Crop, Soil, and Environmental Sciences (CSES) faculty at the University of Arkansas…

  18. Florida's Manatee. An Educator's Guide. Third Edition Revised.

    Science.gov (United States)

    Fritz-Quincy, Debbie

    This revised and updated guide provides resources for teaching about the Florida manatee, a nearly hairless, thick-skinned marine mammal without hindlimbs and with paddle-like forelimbs. The manatee (an endangered species) is sometimes called a sea cow. The guide includes: (1) a vocabulary list; (2) a list of suggested readings; (3) an annotated…

  19. Revision of the Palaearctic genus Trachyusa Ruthe (Hymenoptera: Braconidae)

    OpenAIRE

    Achterberg, van, T.; O'Connor, J P

    1990-01-01

    The Palaearctic genus Trachyusa Ruthe, 1854 (Braconidae: Alysiinae: Alysiini) is revised and one new species, T. nigrothoracica spec. nov., is described and fully illustrated. A key to the species is added. Lectotypes are designated of Alysia aurora Haliday, 1838 and of Trachyusa nigriceps Ruthe, 1854.

  20. Revision of the Palaearctic genus Trachyusa Ruthe (Hymenoptera: Braconidae)

    NARCIS (Netherlands)

    Achterberg, van C.; O'Connor, J.P.

    1990-01-01

    The Palaearctic genus Trachyusa Ruthe, 1854 (Braconidae: Alysiinae: Alysiini) is revised and one new species, T. nigrothoracica spec. nov., is described and fully illustrated. A key to the species is added. Lectotypes are designated of Alysia aurora Haliday, 1838 and of Trachyusa nigriceps Ruthe, 18

  1. Translating and Revising as Opportunities for ESP Teacher Development

    Science.gov (United States)

    Tatzl, Dietmar

    2013-01-01

    This microethnographic case study discusses the effects of translating and revising documents for an English-medium master of science in engineering programme in terms of workload and value for English for Specific Purposes (ESP) teacher development, integration, and enculturation. During the changeover from the diploma to bachelor-master…

  2. Revisions of African Moraceae (excluding Dorstenia, Ficus, Musanga and Myrianthus)

    NARCIS (Netherlands)

    Berg, C.C.

    1977-01-01

    In continuation of de Ruiter’s treatment of Myrianthus and Musanga (Bull. Jard. Bot. Nat. Belg. 46: 471-510.1976), the present paper gives a revision of the African representatives of 17 genera of the Moraceae. The area studied not only consists of the African Continent, but also includes Madagascar

  3. A Glossary of Literature and Composition. Revised Edition.

    Science.gov (United States)

    Lazarus, Arnold; Smith, H. Wendell

    A valuable adjunct reference tool for teachers and students of English, this revised and enlarged glossary defines and discusses nearly 800 concepts and terms used in literature and literary criticism, rhetorical theory, and composition. The authors explain many key concepts in considerable detail, placing terms in historical context, offering…

  4. A taxonomic revision of the genus Ixonanthes (Linaceae)

    NARCIS (Netherlands)

    Kool, R.

    1980-01-01

    In this revision 3 species are recognized for the Southeast Asian, mainly Malesian, genus Ixonanthes Jack (Linaceae). No new species are described, while 29 names have been placed into synonymy. It is proposed to unite the African genus Phyllocosmus Klotzsch with the American genus Ochthocosmus Bent

  5. A taxonomic revision of the Asiatic genus Pentasacme (Asclepiadaceae)

    NARCIS (Netherlands)

    Rahman, M.A.; Wilcock, C.C.

    1991-01-01

    A complete revision of the Asiatic genus Pentasacme Wall. ex Wight is given with a key to the four species. The distribution, ecology, and comparative morphology of the genus are discussed and the variation in diagnostic features within the genus is shown by illustration. Two sections are recognized

  6. 75 FR 45080 - Revisions to the California State Implementation Plan

    Science.gov (United States)

    2010-08-02

    ... Implementation Plan (SIP). These revisions concern oxides of nitrogen (NO X ) emissions from boilers, steam... Boilers, Steam Generators 12/17/09 05/17/10 and Process Heaters-- 0.75 to less than 2.0 MMbtu/hr. On June... from boilers, steam generators, process heaters and water heaters with a total rated heat input...

  7. Revision of the Antipatharia (Cnidaria: Anthozoa). Part II. Schizopathidae

    NARCIS (Netherlands)

    Opresko, D.M.

    2002-01-01

    The family of antipatharian corals, Schizopathidae (Cnidaria: Anthozoa: Antipatharia), is revised. The family is characterized by polyps elongated in the direction of the axis and having a transverse diameter of 2 mm or more. Genera are recognized on the basis of morphological features of the corall

  8. Revision der niederländischen Homobasidiomycetae-Aphyllophoraceae

    NARCIS (Netherlands)

    Donk, M.A.

    1933-01-01

    In dieser Arbeit gebe ich den zweiten Teil einer Revision der niederländischen Heterobasidiomyceten und Homobasidiomyceten -Aphyllophoraceen. Der erste Teil, der in holländischer Sprache erschien (Mededeelingen Nederl. Myc. Vereeniging Bd. 18—20, 1931), war in Anlage und Behandlung kürzer gehalten.

  9. Revisioning Premodern Fine Art as Popular Visual Culture

    Science.gov (United States)

    Duncum, Paul

    2014-01-01

    Employing the concept of a rhetoric of emotions, European Premodern fine art is revisioned as popular culture. From ancient times, the rhetoric of emotion was one of the principle concepts informing the theory and practice of all forms of European cultural production, including the visual arts, until it was gradually displaced during the 1700s and…

  10. 76 FR 60388 - Revision of Cotton Futures Classification Procedures

    Science.gov (United States)

    2011-09-29

    ... Agricultural Marketing Service 7 CFR Part 27 RIN 0581-AD16 Revision of Cotton Futures Classification Procedures AGENCY: Agricultural Marketing Service, USDA. ACTION: Proposed rule. SUMMARY: The Agricultural Marketing... exhausted prior to any judicial challenge to the provisions of this rule. Regulatory Flexibility...

  11. Library Reproduction of Musical Works: A Review of Revision.

    Science.gov (United States)

    Hunter, Carolyn Owlett

    1983-01-01

    Reprography of musical works as covered by Copyright Law 1976 (section 108) and new law (PL94-553) is discussed. Historical interpretation and exclusion of music and copyright, impact of law on music libraries, and recommendations for revision of law by Music Library Association and Music Publisher's Association of America are highlighted. (EJS)

  12. The New ACRL Information Literacy Competency Standards: Revising Reception

    Science.gov (United States)

    Harris, Benjamin R.

    2013-01-01

    The publication of educational standards inspires a variety of responses, from wholesale acceptance and deployment to criticism and blame. The author of this paper contends that the revision of the ACRL's "Information Literacy Competency Standards for Higher Education" must be accompanied by a critical, conscious, and conscientious…

  13. New Mandates and Imperatives in the Revised "ACA Code of Ethics"

    Science.gov (United States)

    Kaplan, David M.; Kocet, Michael M.; Cottone, R. Rocco; Glosoff, Harriet L.; Miranti, Judith G.; Moll, E. Christine; Bloom, John W.; Bringaze, Tammy B.; Herlihy, Barbara; Lee, Courtland C.; Tarvydas, Vilia M.

    2009-01-01

    The first major revision of the "ACA Code of Ethics" in a decade occurred in late 2005, with the updated edition containing important new mandates and imperatives. This article provides interviews with members of the Ethics Revision Task Force that flesh out seminal changes in the revised "ACA Code of Ethics" in the areas of confidentiality,…

  14. 46 CFR 308.523 - Application for revision of Open Cargo Policy, Form MA-303.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 8 2010-10-01 2010-10-01 false Application for revision of Open Cargo Policy, Form MA-303. 308.523 Section 308.523 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION EMERGENCY... Application for revision of Open Cargo Policy, Form MA-303. An application for the revision of an Open...

  15. The Autism Diagnostic Observation Schedule, Module 4: Revised Algorithm and Standardized Severity Scores

    Science.gov (United States)

    Hus, Vanessa; Lord, Catherine

    2014-01-01

    The recently published Autism Diagnostic Observation Schedule, 2nd edition (ADOS-2) includes revised diagnostic algorithms and standardized severity scores for modules used to assess younger children. A revised algorithm and severity scores are not yet available for Module 4, used with verbally fluent adults. The current study revises the Module 4…

  16. On the degeneracy of the full AGM-theory of theory-revision

    OpenAIRE

    Tennant, Neil

    2006-01-01

    A general method is provided whereby bizarre revisions of consistent theories with respect to contingent sentences that they refute can be delivered by revision-functions satisfying both the basic and the supplementary postulates of the AGM-theory of theory-revision.

  17. 78 FR 60309 - Minor Boundary Revision at Rocky Mountain National Park

    Science.gov (United States)

    2013-10-01

    ... National Park Service Minor Boundary Revision at Rocky Mountain National Park AGENCY: National Park Service, Interior. ACTION: Notification of Boundary Revision. SUMMARY: The boundary of Rocky Mountain National Park... depicting this boundary revision is available for inspection at the following locations: National...

  18. 77 FR 38124 - Inspector General; Line of Succession Designation, No. 23-C, Revision 5

    Science.gov (United States)

    2012-06-26

    ... ADMINISTRATION Inspector General; Line of Succession Designation, No. 23-C, Revision 5 This document replaces and supersedes ``Delegation of Authority and Line of Succession No. 23-C, Revision 4.'' Line of Succession Designation, No. 23-C, Revision 5: Effective immediately, the Inspector General's Line of...

  19. 9 CFR 108.6 - Revision of plot plans, blueprints, and legends.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Revision of plot plans, blueprints... FACILITY REQUIREMENTS FOR LICENSED ESTABLISHMENTS § 108.6 Revision of plot plans, blueprints, and legends... changes affecting the workflow are to be made. The licensee shall: (a) Prepare revised plot...

  20. 15 CFR 16.11 - Amendment or revision of a performance information labeling specification.

    Science.gov (United States)

    2010-01-01

    ... revision of a performance information labeling specification. The Secretary may by order amend or revise... 15 Commerce and Foreign Trade 1 2010-01-01 2010-01-01 false Amendment or revision of a performance information labeling specification. 16.11 Section 16.11 Commerce and Foreign Trade Office of the Secretary...

  1. Human Factors Engineering Program Review Model (NUREG-0711)Revision 3: Update Methodology and Key Revisions

    Energy Technology Data Exchange (ETDEWEB)

    OHara J. M.; Higgins, J.; Fleger, S.

    2012-07-22

    The U.S. Nuclear Regulatory Commission (NRC) reviews the human factors engineering (HFE) programs of applicants for nuclear power plant construction permits, operating licenses, standard design certifications, and combined operating licenses. The purpose of these safety reviews is to help ensure that personnel performance and reliability are appropriately supported. Detailed design review procedures and guidance for the evaluations is provided in three key documents: the Standard Review Plan (NUREG-0800), the HFE Program Review Model (NUREG-0711), and the Human-System Interface Design Review Guidelines (NUREG-0700). These documents were last revised in 2007, 2004 and 2002, respectively. The NRC is committed to the periodic update and improvement of the guidance to ensure that it remains a state-of-the-art design evaluation tool. To this end, the NRC is updating its guidance to stay current with recent research on human performance, advances in HFE methods and tools, and new technology being employed in plant and control room design. NUREG-0711 is the first document to be addressed. We present the methodology used to update NUREG-0711 and summarize the main changes made. Finally, we discuss the current status of the update program and the future plans.

  2. Femoral component revision using extensively porous-coated cementless stem

    Institute of Scientific and Technical Information of China (English)

    WU Li-dong; XIONG Yan; YAN Shi-gui; YANG Quan-sen; DAI Xue-song

    2005-01-01

    Objective: To evaluate the clinical and radiographic results of extensively porous-coated femoral stem in revision of total hip arthroplasty (THA).Methods: From January 1999 to December 2003,fifteen hips of fifteen cases received revision of THA with extensively porous-coated femoral stem. There were six males and nine females. The average age was 66 years (ranging 58-82 years). The reason for the revision was aseptic loosening in 10 cases, septic loosening in 2, femoral shaft fracture around loose implant in 2, and femoral revision for malposition of the femoral component in 1. All the patients were clinically evaluated using Harris hip score and radiographically evaluated both preoperatively and postoperatively at regular follow-up intervals.Results: No patients were lost for follow-up. The average length of follow-up was 2.3 years (range, 1-5years). The average preoperative Harris hip score was 42points, which was improved to 89 points at latest follow-up.The latest follow-up showed that bone in-growth occurred in fourteen stems and solid fibrous fixation in one.Complications consisted of femoral shaft fracture in two cases (1 undisplaced distal femur fracture and 1 cortical perforation at the tip of the prosthesis), and postoperative dislocation in one. There was no mechanical failure of the stem in this study.Conclusions: Satisfactory results of short-term clinical and radiographic follow-up have been achieved in using extensively porous-coated femoral stem for revision of THA. It should be noticed that the straight, 203 mm stem should be used with caution in short people.

  3. Revision Anterior Cruciate Ligament Reconstruction in Military Personnel.

    Science.gov (United States)

    Balazs, George C; Grimm, Patrick D; Donohue, Michael A; Keblish, David J; Rue, John-Paul

    2016-08-01

    This study aims to report the clinical and functional outcomes of revision anterior cruciate ligament (ACL) reconstruction in a young, active duty military population. Patients undergoing revision ACL reconstruction were enrolled in an institutional clinical database and followed prospectively. The primary outcomes were patients' scores on a timed run, as compared with recorded scores before reinjury. Secondary outcomes included scores on the Knee Injury and Osteoarthritis Outcome Score (KOOS), the Western Ontario and McMaster Universities Arthritis Index (WOMAC), the International Knee Documentation Committee subjective (IKDC subjective), the Short Form - 36 health survey (SF-36) version 2, the Single Assessment Numeric Evaluation (SANE), and the Tegner activity scale. A total of 13 patients were identified who met the inclusion criteria and had complete follow-up. The mean age at revision ACL reconstruction was 20.5 years (range, 19-22 years), and mean follow-up was 40.2 months (range, 13-66 months). All patients underwent a single stage revision ACL reconstruction with ipsilateral bone-patellar tendon-bone autograft, ipsilateral hamstring autograft, or bone-tendon-bone allograft. Mean physical readiness test (PRT) score at final follow-up was not statistically different than documented preinjury PRT score (77.9 vs. 85.5, p > 0.05), nor was the mean run time (7:12 vs. 6:43/mile, p > 0.05). Significant improvements exceeding published minimal clinically important differences were seen in SANE score, SF-36 physical component summary score, KOOS sports and recreation, KOOS quality of life, WOMAC pain score, and WOMAC function score. Patients undergoing revision ACL reconstruction at our facility show good recovery of baseline physical performance as measured by the semiannual PRT and timed run test, and significant improvements in patient-reported outcome scores. Level of Evidence Level IV, case series. PMID:26524090

  4. Revising in two languages : A multi-dimensional comparison of online writing revisions in L1 and FL

    NARCIS (Netherlands)

    Stevenson, Marie; Schoonen, Rob; de Glopper, Cornelis

    2006-01-01

    It has frequently been claimed that, in foreign language writing, attention to linguistic processes inhibits attention available for higher level conceptual processing [e.g., Chenoweth & Hayes, 2001; Whalen & Menard, 1995]. This Study examines this hypothesis for foreign language revision processes

  5. 75 FR 75448 - Revised Proposal for Revisions to the Schedules of Civil Penalties for a Violation of a Federal...

    Science.gov (United States)

    2010-12-03

    ... Proposal for Revisions to the Schedules of Civil Penalties for a Violation of a Federal Railroad Safety Law... schedules of civil penalties as well as other guidance was published on September 21, 2010 (75 FR 57598... schedules of civil penalties issued as appendices to FRA's rail safety regulations, as well as...

  6. 75 FR 57597 - Revised Proposal for Revisions to the Schedules of Civil Penalties for a Violation of a Federal...

    Science.gov (United States)

    2010-09-21

    ... to the Schedules of Civil Penalties for a Violation of a Federal Railroad Safety Law or Federal... Revisions to the Schedules of Civil Penalties for a Violation of a Federal Railroad Safety Law or Federal... range of civil penalties * * * permitted to be assessed for violation of specific regulations.'' 53...

  7. Guidance document for revision of DOE Order 5820.2A, Radioactive Waste Technical Support Program

    International Nuclear Information System (INIS)

    This document provides guidance for the revision of DOE Order 5820.2A, ''Radioactive Waste Management.'' Technical Working Groups have been established and are responsible for writing the revised order. The Technical Working Groups will use this document as a reference for polices and procedures that have been established for the revision process. The overall intent of this guidance is to outline how the order will be revised and how the revision process will be managed. In addition, this document outlines technical issues considered for inclusion by a Department of Energy Steering Committee

  8. Revision history aware repositories of computational models of biological systems

    Directory of Open Access Journals (Sweden)

    Nickerson David P

    2011-01-01

    Full Text Available Abstract Background Building repositories of computational models of biological systems ensures that published models are available for both education and further research, and can provide a source of smaller, previously verified models to integrate into a larger model. One problem with earlier repositories has been the limitations in facilities to record the revision history of models. Often, these facilities are limited to a linear series of versions which were deposited in the repository. This is problematic for several reasons. Firstly, there are many instances in the history of biological systems modelling where an 'ancestral' model is modified by different groups to create many different models. With a linear series of versions, if the changes made to one model are merged into another model, the merge appears as a single item in the history. This hides useful revision history information, and also makes further merges much more difficult, as there is no record of which changes have or have not already been merged. In addition, a long series of individual changes made outside of the repository are also all merged into a single revision when they are put back into the repository, making it difficult to separate out individual changes. Furthermore, many earlier repositories only retain the revision history of individual files, rather than of a group of files. This is an important limitation to overcome, because some types of models, such as CellML 1.1 models, can be developed as a collection of modules, each in a separate file. The need for revision history is widely recognised for computer software, and a lot of work has gone into developing version control systems and distributed version control systems (DVCSs for tracking the revision history. However, to date, there has been no published research on how DVCSs can be applied to repositories of computational models of biological systems. Results We have extended the Physiome Model

  9. 78 FR 78326 - Revision of the Land Management Plans for the Inyo, Sierra and Sequoia National Forests

    Science.gov (United States)

    2013-12-26

    ... notice should be addressed to Land Management Plan Revision, U.S. Forest Service, Ecosystem Planning... planning process, which is revising the land management plans. The first task of plan revision is to... second stage of the planning process, the development of the land management plan revisions. Once...

  10. 75 FR 16833 - Preliminary Revised 5-Year Outer Continental Shelf (OCS) Oil and Gas Leasing Program for 2007-2012

    Science.gov (United States)

    2010-04-02

    ... Minerals Management Service Preliminary Revised 5-Year Outer Continental Shelf (OCS) Oil and Gas Leasing... Revised 5-Year OCS Oil and Gas Leasing Program for 2007- 2012. This is the Preliminary Revised Program... relative environmental sensitivity analysis and the Secretary's revisions to the leasing schedule...

  11. Development of a revised mathematical model of the gastrointestinal tract

    International Nuclear Information System (INIS)

    The objectives of this research are as follows. First, to incorporate new biological data into a revised mathematical adult gastrointestinal tract model that includes: ingestion in both liquid and solid forms; consideration of absorption in the stomach, small intestine, ascending colon, transverse colon or not at all; gender and age of the adult; and whether the adult is a smoker or not. Next, to create a computer program in basic language for calculating residence times in each anatomical section of the GI tract for commonly used radionuclides. Also, to compare and contrast the new model with the ICRP 30 GI tract model in terms of physiological concepts, mathematical concepts, and revised residence times for several commonly used radionuclides. Finally, to determine whether the new model is sufficiently better than the current model to warrant its use as a replacement for the Eve model

  12. Deep Borehole Emplacement Mode Hazard Analysis Revision 0

    Energy Technology Data Exchange (ETDEWEB)

    Sevougian, S. David [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-08-07

    This letter report outlines a methodology and provides resource information for the Deep Borehole Emplacement Mode Hazard Analysis (DBEMHA). The main purpose is identify the accident hazards and accident event sequences associated with the two emplacement mode options (wireline or drillstring), to outline a methodology for computing accident probabilities and frequencies, and to point to available databases on the nature and frequency of accidents typically associated with standard borehole drilling and nuclear handling operations. Risk mitigation and prevention measures, which have been incorporated into the two emplacement designs (see Cochran and Hardin 2015), are also discussed. A key intent of this report is to provide background information to brief subject matter experts involved in the Emplacement Mode Design Study. [Note: Revision 0 of this report is concentrated more on the wireline emplacement mode. It is expected that Revision 1 will contain further development of the preliminary fault and event trees for the drill string emplacement mode.

  13. Hanford Site National Environmental Policy Act (NEPA) characterization. Revision 9

    International Nuclear Information System (INIS)

    This ninth revision of the Hanford Site National Environmental Policy Act (NEPA) Characterization presents current environmental data regarding the hanford Site and its immediate environs. This information is intended for use in preparing Chapters 4 and 6 in Hanford Site-related NEPA documents. Chapter 4.0 (Affected Environment) includes information on climate and meteorology, geology, hydrology, ecology, cultural, archaeological and historical resources, socioeconomics, and noise. Chapter 6.0 (Statutory and Regulatory Requirements) provides the preparer with the federal and state regulations, DOE directives and permits, and environmental standards directly applicable to the NEPA documents on the Hanford Site. Not all of the sections have been updated for this revision. The following lists the updated sections: climate and meteorology; ecology (threatened and endangered species section only); culture, archaeological, and historical resources; socioeconomics; all of Chapter 6

  14. Seismic analyses of equipment in 2736-Z complex. Revision 1

    International Nuclear Information System (INIS)

    This report documents the structural qualification for the existing equipment when subjected to seismic loading in the Plutonium Storage Complex. It replaces in entirety Revision 0 and reconciles the U.S. Department of Energy (DOE) comments on Revision 0. The Complex consists of 2736-Z Building (plutonium storage vault), 2736-ZA Building (vault ventilation equipment building), and 2736-ZB Building (shipping/receiving, repackaging activities). The existing equipment structurally qualified in this report are the metal storage racks for 7 inch and lard cans in room 2 of Building 2736-Z; the cubicles, can holders and pedestals in rooms 1, 3, and 4 of Building 2736-Z; the ventilation duct including exhaust fans/motors, emergency diesel generator, and HEPA filter housing in Building 2736-ZA; the repackaging glovebox in Building 2736-ZB; and the interface duct between Buildings 2736-Z and 2736-ZA

  15. A Revision on Cost Elements of the EOQ Model

    Directory of Open Access Journals (Sweden)

    Asadabadi Mehdi Rajabi

    2016-04-01

    Full Text Available The overall objective of this paper is to investigate the fundamental cost elements of the traditional EOQ model and develop the model by expiring some of its unrealistic assumptions. Over the last few decades, there have been numerous studies developing the EOQ model, but the basic cost elements of the EOQ model have not been investigated efficiently. On the other hand, the capital cost of buying inventories seems to be important to be investigated separately as well as holding cost and ordering cost in the model. In this paper, the capital cost of the inventory and possible stepwise increases in holding and setup cost are taken into account to make a revised formula to compute the economic order quantity. The proposed model involves explicitly the capital cost of buying the inventories in the EOQ model to ensure the decision makers that their financial concerns are considered in the revised model and the new order quantity results the minimum total cost.

  16. Detecting Communities by Revised Max-flow Method in Networks

    Institute of Scientific and Technical Information of China (English)

    LIU Chuan-Jian; ZHU Zhi-Qiang; WU Jian-Liang

    2013-01-01

    A ubiquitous phenomenon in networks is the presence of communities within which the network connections are dense and between which they are sparser.This paper proposes a max-flow algorithm in bipartite networks to detect communities in general networks.Firstly,we construct a bipartite network in accordance with a general network and derive a revised max-flow problem in order to uncover the community structure.Then we present a local heuristic algorithm to find the optimal solution of the revised max-flow problem.This method is applied to a variety of real-world and artificial complex networks,and the partition results confirm its effectiveness and accuracy.

  17. SARP-II: Safeguards Accounting and Reports Program, Revised

    Energy Technology Data Exchange (ETDEWEB)

    Kempf, C.R.

    1994-03-01

    A computer code, SARP (Safeguards Accounting and Reports Program) which will generate and maintain at-facility safeguards accounting records, and generate IAEA safeguards reports based on accounting data input by the user, was completed in 1990 by the Safeguards, Safety, and Nonproliferation Division (formerly the Technical Support Organization) at Brookhaven National Laboratory as a task under the US Program of Technical Support to IAEA safeguards. The code was based on a State System of Accounting for and Control of Nuclear Material (SSAC) for off-load refueled power reactor facilities, with model facility and safeguards accounting regime as described in IAEA Safeguards Publication STR-165. Since 1990, improvements in computing capabilities and comments and suggestions from users engendered revision of the original code. The result is an updated, revised version called SARP-II which is discussed in this report.

  18. Non-Power Reactor Operator Licensing Examiner Standards. Revision 1

    International Nuclear Information System (INIS)

    The Non-Power Reactor Operator Licensing Examiner Standards provide policy and guidance to NRC examiners and establish the procedures and practices for examining and licensing of applicants for NRC operator licenses pursuant to Part 55 of Title 10 of the Code of Federal Regulations (10 CFR 55). They are intended to assist NRC examiners and facility licensees to understand the examination process better and to provide for equitable and consistent administration of examinations to all applicants by NRC examiners. These standards are not a substitute for the operator licensing regulations and are subject to revision or other internal operator examination licensing policy changes. As appropriate, these standards will be revised periodically to accommodate comments and reflect new information or experience

  19. Seismic analyses of equipment in 2736-Z complex. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Ocoma, E.C.

    1995-04-01

    This report documents the structural qualification for the existing equipment when subjected to seismic loading in the Plutonium Storage Complex. It replaces in entirety Revision 0 and reconciles the U.S. Department of Energy (DOE) comments on Revision 0. The Complex consists of 2736-Z Building (plutonium storage vault), 2736-ZA Building (vault ventilation equipment building), and 2736-ZB Building (shipping/receiving, repackaging activities). The existing equipment structurally qualified in this report are the metal storage racks for 7 inch and lard cans in room 2 of Building 2736-Z; the cubicles, can holders and pedestals in rooms 1, 3, and 4 of Building 2736-Z; the ventilation duct including exhaust fans/motors, emergency diesel generator, and HEPA filter housing in Building 2736-ZA; the repackaging glovebox in Building 2736-ZB; and the interface duct between Buildings 2736-Z and 2736-ZA.

  20. SARP-II: Safeguards Accounting and Reports Program, Revised

    International Nuclear Information System (INIS)

    A computer code, SARP (Safeguards Accounting and Reports Program) which will generate and maintain at-facility safeguards accounting records, and generate IAEA safeguards reports based on accounting data input by the user, was completed in 1990 by the Safeguards, Safety, and Nonproliferation Division (formerly the Technical Support Organization) at Brookhaven National Laboratory as a task under the US Program of Technical Support to IAEA safeguards. The code was based on a State System of Accounting for and Control of Nuclear Material (SSAC) for off-load refueled power reactor facilities, with model facility and safeguards accounting regime as described in IAEA Safeguards Publication STR-165. Since 1990, improvements in computing capabilities and comments and suggestions from users engendered revision of the original code. The result is an updated, revised version called SARP-II which is discussed in this report

  1. RPE and RPO in the revised Swiss radiation protection legislation

    International Nuclear Information System (INIS)

    Currently the Swiss 'Ordinance on Radiation Protection' and the 'Ordinance about Education and Training in RP' are undergoing a revision process. Concerning responsibilities and obligations as well as the capabilities and skills in RP the new ordinances are supposed to take account on the new EU Basic Safety Standard on the one hand and on the other hand to resume the approved approaches on RP in Switzerland. An overview of the planned content of the revised ordinances will be given in this report. In the Swiss system the education, training and retraining of RPO has a higher priority. Particularly it will be described which groups of persons assume the roles of RPE and therefore the definition of RPE in the new Swiss legislation is needless. (orig.)

  2. Hanford Site National Environmental Policy Act (NEPA) characterization. Revision 9

    Energy Technology Data Exchange (ETDEWEB)

    Neitzel, D.A. [ed.; Bjornstad, B.N.; Fosmire, C.J. [and others

    1997-08-01

    This ninth revision of the Hanford Site National Environmental Policy Act (NEPA) Characterization presents current environmental data regarding the hanford Site and its immediate environs. This information is intended for use in preparing Chapters 4 and 6 in Hanford Site-related NEPA documents. Chapter 4.0 (Affected Environment) includes information on climate and meteorology, geology, hydrology, ecology, cultural, archaeological and historical resources, socioeconomics, and noise. Chapter 6.0 (Statutory and Regulatory Requirements) provides the preparer with the federal and state regulations, DOE directives and permits, and environmental standards directly applicable to the NEPA documents on the Hanford Site. Not all of the sections have been updated for this revision. The following lists the updated sections: climate and meteorology; ecology (threatened and endangered species section only); culture, archaeological, and historical resources; socioeconomics; all of Chapter 6.

  3. Decommissioning plan - decommissioning project for KRR 1 and 2 (revised)

    International Nuclear Information System (INIS)

    This report is the revised Decommissioning Plan for the license of TRIGA research reactor decommissioning project according to Atomic Energy Act No. 31 and No. 36. The decommissioning plan includes the TRIGA reactor facilities, project management, decommissioning method, decontamination and dismantling activity, treatment, packaging, transportation and disposal of radioactive wastes. the report also explained the radiation protection plan and radiation safety management during the decommissioning period, and expressed the quality assurance system during the period and the site restoration after decommissioning. The first decommissioning plan was made by Hyundai Engineering Co, who is the design service company, was submitted to the Ministry of Science and Technology, and then was reviewed by the Korea Institute of Nuclear Safety. The first decommissioning plan was revised including answers for the questions arising from review process

  4. Default Reasoning and Belief Revision: A Syntax-Independent Approach

    Institute of Scientific and Technical Information of China (English)

    张东摩; 朱朝晖; 陈世福

    2000-01-01

    As an important variant of Reiter's default logic, Poole (1988) de veloped a nonmonotonic reasoning framework in the classical first-order language. Brewka and Nebel extended Poole's approach in order to enable a representation of priorities between defaults. In this paper a general framework for default reasoning is presented, which can be viewed as a generalization of the three approaches above. It is proved that the syntax-independent default reasoning in this framework is iden tical to the general belief revision operation introduced by Zhang et al. (1997). This result provides a solution to the problem whether there is a correspondence between belief revision and default logic for the infinite case. As a by-product, an answer to the question, raised by Mankinson and Gairdenfors (1991), is also given about whether there is a counterpart contraction in nonmonotonic logic.

  5. Revision of the new formula for book losing rate

    Institute of Scientific and Technical Information of China (English)

    TANG Zhen-yu; GENG Xiao-bing

    2005-01-01

    While the amount of book borrowing is overlooked in the calculation of book losing rate in a closed system, there are also other important overlooked elements, factors such as reader groups and the reading timetable in open book stacks. On the basis of concrete evidence, this paper revised a new formula for book losing rate with the purpose of making the estimation in management more objective and more accurate.

  6. Graphic Display Development Program. Volume I, Revision 0

    International Nuclear Information System (INIS)

    The objective of this project is to demonstrate the feasibility and utility of developing a set of graphic displays to support symptom-based emergency operating procedures (EOPs). Development of generic graphic displays is based on Revision 3 of the symptomatic Emergency Procedure Guidelines (EPGs) prepared by the BWR Owners' Group (BWROG), and development of plant-specific graphic displays is based on a set of emergency operating procedures developed from these EPGs

  7. Service Dominant Logic. Changing perspective, revising the toolbox

    DEFF Research Database (Denmark)

    Morelli, Nicola; Götzen, Amalia De

    2016-01-01

    This paper analyses the perspective shift that has happened in service design practice with the introduction of the Service Dominant Logic. Three different levels of design action are presented with their methodological implications. In the fluid context where diffuse design, expert design...... and strategic design take place, relevant case studies are shortly presented in order to describe the designer’s role in the value-creation process and the consequent necessary revision of his own toolbox....

  8. Graphic Display Development Program. Volume II, Revision 0. Appendices

    International Nuclear Information System (INIS)

    The objective of this project is to demonstrate the feasibility and utility of developing a set of graphic displays to support symptom-based emergency operating procedures (EOPs). Development of generic graphic displays is based on Revision 3 of the symptomatic Emergency Procedure Guidelines (EPGs) prepared by the BWR Owners' Group (BWROG), and development of plant-specific graphic displays is based on a set of emergency operating procedures developed from these EPGs

  9. Recoil Correction to Hydrogen Energy Levels A Revision

    CERN Document Server

    Yelkhovsky, A S

    1997-01-01

    Recent calculations of the order (Z\\alpha)^4(m/M)Ry pure recoil correction to hydrogen energy levels are critically revised. The origins of errors made in the previous works are elucidated. In the framework of a successive approach, we obtain the new result for the correction to S levels. It amounts to -16.4 kHz in the ground state and -1.9 kHz in the 2S state.

  10. Revision of the genus Vadumasonium Kammerer (Hymenoptera, Braconidae, Brachistinae

    Directory of Open Access Journals (Sweden)

    Kees van Achterberg

    2013-08-01

    Full Text Available The genus Vadumasonium Kammerer, 2006 (Braconidae: Brachistinae: Diospilini, formerly known only from the Nearctic region, is revised and a second species is described from England and Germany: V. vardyorum sp. n. The genus is new to the Palaearctic region and we report the first host record for the genus. A key to similar genera of the Diospilini and to both species is given.

  11. Valentine test of intelligence for children: Revision concernes

    OpenAIRE

    Matija Svetina

    2002-01-01

    The article presents a pilot study to suggest revisions of Slovenian form of Valentine Test of Intelligence for children. Some previous research have shown that some items did not meet content, design or linguistic standards of current intelligence tests for children. For this reason, we added some new items and test materials to test 116 children aged 3 to 7 years. The results confirmed some previous research to show that the difficulty of items decreases with generations of children and tha...

  12. Polarized proton Target-III operators manual, revision A

    International Nuclear Information System (INIS)

    A revision is given of a manual containing standard operating procedures for the vacuum, cryogenic, and electronic systems of a polarized proton target. The discussion includes the target cryostat, the 3He and 4He pumping systems, remote monitors and controls, the microwave system, the magnet and power supply, the computerized polarization monitor, the 4He liquifier and gas recovery system, and miscellaneous auxiliary equipment

  13. Evaluating ILI Advanced Series through Bloom's Revised Taxonomy

    OpenAIRE

    MAHDIPOUR, Nasim; SADEGHI, Bahador

    2015-01-01

    Abstract. This study investigated Iran Language Institute Advanced Series in terms of learning objectives based on Bloom's Revised Taxonomy. It examined the cognitive, affective and psychomotor domains to see how the critical thinking skills are used and to what extent these books are different from each other. For these purposes, the frequencies, percentages and Standard Residual were analyzed. Results revealed that the lower-order cognitive skills (i.e. remembering, understanding and applyi...

  14. Revisions in Coelogyninae (Orchidaceae) IV. Coelogyne section Tomentosae

    OpenAIRE

    Vogel, de, V.

    1992-01-01

    This article contains a taxonomic revision of Coelogyne section Tomentosae (24 species). Five species (C. acutilabium, C. bruneiensis, C. echinolabium, C. latiloba, C. velulina) are newly described; three other species are allotted for the first time to this section (C. buennemeyeri, C. distans, C. rupicola). One species, formerly included in section Tomentosae, is excluded (C. veitchii). Six species are here reduced to synonymy. A key to the species is provided. Synonymy, description, distri...

  15. Space-contained conflict revision, for geographic information

    OpenAIRE

    Doukari, Omar; Jeansoulin, Robert

    2007-01-01

    14 pages International audience Using qualitative reasoning with geographic information, contrarily, for instance, with robotics, looks not only fastidious (i.e.: encoding knowledge Propositional Logics PL), but appears to be computational complex, and not tractable at all, most of the time. However, knowledge fusion or revision, is a common operation performed when users merge several different data sets in a unique decision making process, without much support. Introducing logics woul...

  16. Factors Relating to EFL Writers' Discourse Level Revision Skills

    OpenAIRE

    Carol Rinnert; Hiroe Kobayashi

    2001-01-01

    This study investigated discourse level revising skills among three groups of Japanese EFL writers and the relationship between these skills and the two factors of English proficiency and writing experience. The three groups of university students (N = 53) differed in terms of their educational level and the amount of writing instruction they had received. Group 1, undergraduates with no writing instruction; Group 2, undergraduates with one year of English writing instruction; and Group 3, gr...

  17. Taxonomic Revision and Molecular Studies of Garcinia Section Garcinia (Guttiferae)

    OpenAIRE

    Saleh, Mohd. Nazre

    2006-01-01

    Garcinia section Garcinia is one of 14 sections of the species-rich pantropical genus Garcinia (Guttiferae/Clusiaceae). In its most recent circumscription the section comprised 43 species, mostly of rain forest understorey trees, distributed from eastern India to Fiji, and in Madagascar (Jones, 1980: unpublished Phd. Thesis, University of Leicester). Its most famous member is the fruit tree, mangosteen (G. mangostana). Taxonomic revision of section Garcinia reduces the number o...

  18. A taxonomic revision of the genus Dolianthus (Rubiaceae)

    OpenAIRE

    Davis, Aaron P.; Bridson, Diane M.

    2001-01-01

    A taxonomic revision of Dolianthus C.H. Wright (Rubiaceae-Psychotrieae) is presented, including a key to species, full descriptions, distribution maps, and a list of specimens examined. Eleven species are transferred from Amaracarpus to Dolianthus, resulting in ten new combinations. Two species are described as new to science: D. kairoi and D. ovatifolius. In total, thirteen species are included in Dolianthus. Dolianthus is endemic to the highlands (montane to subalpine and alpine zones) of P...

  19. Nuclear Regulatory Commission Human Factors Program Plan. Revision 2

    International Nuclear Information System (INIS)

    This document is the Second Annual Revision to the NRC Human Factors Program Plan. The first edition was published in August 1983. Revision 1 was published in July of 1984. Purpose of the NRC Human Factors Program is to ensure that proper consideration is given to human factors in the design and operation of nuclear power plants. This document describes the plans of the Office of Nuclear Reactor Regulation to address high priority human factors concerns of importance to reactor safety in FY 1986 and FY 1987. Revision 2 of the plan incorporates recent Commission decisions and policies bearing on the human factors aspects of reactor safety regulation. With a few exceptions, the principal changes from prior editions reflect a shift from developing new requirements to staff evaluation of industry progress in resolving human factors issues. The plan addresses seven major program elements: (1) Training, (2) Licensing Examinations, (3) Procedures, (4) Man-Machine Interface, (5) Staffing and Qualifications, (6) Management and Organization, and (7) Human Performance

  20. Approaching the other: Investigation of a descriptive belief revision model

    Directory of Open Access Journals (Sweden)

    Spyridon Stelios

    2016-12-01

    Full Text Available When an individual—a hearer—is confronted with an opinion expressed by another individual—a speaker—differing from her only in terms of a degree of belief, how will she react? In trying to answer that question this paper reintroduces and investigates a descriptive belief revision model designed to measure approaches. Parameters of the model are the hearer’s credibility account of the speaker, the initial difference between the hearer’s and speaker’s degrees of belief, and the hearer’s resistance to change. Within an interdisciplinary framework, two empirical studies were conducted. A comparison was carried out between empirically recorded revisions and revisions according to the model. Results showed that the theoretical model is highly confirmed. An interesting finding is the measurement of an “unexplainable behaviour” that is not classified either as repulsion or as approach. At a second level of analysis, the model is compared to the Bayesian framework of inference. Structural differences and evidence for optimal descriptive adequacy of the former were highlighted.

  1. Revised seismic and geologic siting regulations for nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Murphy, A.J.; Chokshi, N.C. [Office of Nuclear Regulatory Research, Washington, DC (United States)

    1997-02-01

    The primary regulatory basis governing the seismic design of nuclear power plants is contained in Appendix A to Part 50, General Design Criteria for Nuclear Power Plants, of Title 10 of the Code of Federal Regulations (CFR). General Design Criteria (GDC) 2 defines requirements for design bases for protection against natural phenomena. GDC 2 states the performance criterion that {open_quotes}Structures, systems, and components important to safety shall be designed to withstand the effects of natural phenomena such as earthquakes, . . . without loss of capability to perform their safety functions. . .{close_quotes}. Appendix A to Part 100, Seismic and Geologic Siting Criteria for Nuclear Power Plants, has been the principal document which provided detailed criteria to evaluate the suitability of proposed sites and suitability of the plant design basis established in consideration of the seismic and geologic characteristics of the proposed sites. Appendix A defines required seismological and geological investigations and requirements for other design conditions such as soil stability, slope stability, and seismically induced floods and water waves, and requirements for seismic instrumentation. The NRC staff is in the process of revising Appendix A. The NRC has recently revised seismic siting and design regulations for future applications. These revisions are discussed in detail in this paper.

  2. Computed tomography in evaluation of revision hip arthroplasty outcomes.

    Science.gov (United States)

    Kochman, Andrzej; Morawska-Kochman, Monika; Guziński, Maciej; Drobniewski, Marek; Sibiński, Marcin; Synder, Marek

    2014-01-01

    Background. This study aimed to assess contact between Recon Shell reinforcement cages used in revision hip arthroplasty and the bony base. Radiographic examinations were performed with the use of multi-energy computed tomography. Material and methods. We tentatively assess the fixation of Burch-Schneider reinforcement cages (Recon Shell made by Aesculap company) implanted in 10 patients, using two methods of evaluation. An analysis of dual energy CT scans enabled us to assess contact between the reinforcement cages and the bony base. Results. The two methods of evaluation produced different results. The evaluation method based on the division of the acetabular component into a weight-bearing zone and a non-weight-bearing zone (accounting for screw fixation) showed lack of support in the weight-bearing zone in 6 out of 10 cases and direct contact with the implant bed in only one case. The assessment of contact at anchorage holes of reinforcement cages fixed at primary procedures revealed no such support in only one case and the presence of direct contact in 5 cases. There was no correlation between the radiological outcomes and clinical results based on the Harris Hip Score. Conclusions. 1. Multi-energy computed tomography (MARS) is useful in evaluating results of revision hip allo-plasty. 2. The introduction of new imaging techniques for the evaluation of revision procedures demonstrates a need for new, unified methods of outcome assessment adjusted to the characteristics of a particular procedure. PMID:25406920

  3. Preliminary hazards analysis of thermal scrap stabilization system. Revision 1

    International Nuclear Information System (INIS)

    This preliminary analysis examined the HA-21I glovebox and its supporting systems for potential process hazards. Upon further analysis, the thermal stabilization system has been installed in gloveboxes HC-21A and HC-21C. The use of HC-21C and HC-21A simplified the initial safety analysis. In addition, these gloveboxes were cleaner and required less modification for operation than glovebox HA-21I. While this document refers to glovebox HA-21I for the hazards analysis performed, glovebox HC-21C is sufficiently similar that the following analysis is also valid for HC-21C. This hazards analysis document is being re-released as revision 1 to include the updated flowsheet document (Appendix C) and the updated design basis (Appendix D). The revised Process Flow Schematic has also been included (Appendix E). This Current revision incorporates the recommendations provided from the original hazards analysis as well. The System Design Description (SDD) has also been appended (Appendix H) to document the bases for Safety Classification of thermal stabilization equipment

  4. Revised Severe Accident Research Program plan, FY 1990--1992

    International Nuclear Information System (INIS)

    For the past 10 years, since the Three Mile Island accident, the NRC has sponsored an active research program on light-water-reactor severe accidents as part of a multi-faceted approach to reactor safety. This report describes the revised Severe Accident Research Program (SARP) and how the revisions are designed to provide confirmatory information and technical support to the NRC staff in implementing the staff's Integration Plan for Closure of Severe Accident Issues as described in SECY-88-147. The revised SARP addresses both the near-term research directed at providing a technical basis upon which decisions on important containment performance issues can be made and the long-term research needed to confirm and refine our understanding of severe accidents. In developing this plan, the staff recognized that the overall goal is to reduce the uncertainties in the source term sufficiently to enable the staff to make regulatory decisions on severe accident issues. However, the staff also recognized that for some issues it may not be practical to attempt to further reduce uncertainties, and some regulatory decisions or conclusions will have to be made with full awareness of existing uncertainties. 2 figs., 1 tab

  5. Managing Software Requirements Changes Based on Negotiation-Style Revision

    Institute of Scientific and Technical Information of China (English)

    Ke-Dian Mu; Weiru Liu; Zhi Jin; Jun Hong; David Bell

    2011-01-01

    For any proposed software project,when the software requirements specification has been established,requirements changes may result in not only a modification of the requirements specification but also a series of modifications of all existing artifacts during the development.Then it is necessary to provide effective and flexible requirements changes management.In this paper,we present an approach to managing requirements changes based on Booth's negotiation-style framework for belief revision.Informally,we consider the current requirements specification as a belief set about the systemto-be.The request of requirements change is viewed as new information about the same system-to-be.Then the process of executing the requirements change is a process of revising beliefs about the system-to-be.We design a family of belief negotiation models appropriate for different processes of requirements revision,including the setting of the request of requirements change being fully accepted,the setting of the current requirements specification being fully preserved,and that of the current specification and the request of requirements change reaching a compromise.In particular,the prioritization of requirements plays an important role in reaching an agreement in each belief negotiation model designed in this paper.

  6. Behavior symposium Workshop A report - current guidelines/revision.

    Science.gov (United States)

    McWhorter, Alton G; Townsend, Janice A

    2014-01-01

    A Workshop of attendees was convened following the completion of the American Academy of Pediatric Dentistry (AAPD) symposium, "Beyond the Guidelines: Factors Affecting Behavior Guidance." The title of Workshop A was Guidelines/Revisions and charges were to review whether the current AAPD Behavior Management Guidelines were adequate to guide delivery of dental care for children with specific attention to their effectiveness and safety, the protection of the pediatric patient and dentist, and the newly revised Protective Stabilization guideline, considering the presentations during the symposium. Major themes emerged as areas for consideration in future revisions of the guidelines: 1) toxic stress and the culture of poverty; 2) behavior risk assessment; 3) contemporary knowledge of pain theory; 4) deferred treatment; 5) parental presence in the operatory and 6) current use of protective stabilization. These issues were examined in the context of the current economic, social, and political environment. A summary of the topics and discussions that took place regarding the adequacy of the guidelines is presented. PMID:24717754

  7. Specification for the digital recording of ultrasonic signals (March 1985 revision)

    International Nuclear Information System (INIS)

    This specification describes a precise format for the recording of both digitized ultrasonic signals and the documentation necessary for their interpretation. The specification is a revision of the september 1982 Revision of the 'Specification for the digital recording of ultrasonic signals'. The original document was prepared by an ad hoc committee of EPRI contractors who routinely generate digitized ultrasonic data. This revision includes the use of array probes, mode conversion effects and the possibilities of modern transient recorders

  8. Revisions of K/Ar ages for the Hadar hominid site, Ethiopia

    International Nuclear Information System (INIS)

    Conventional K/Ar age measurements are reported for two volcanic units from the hominid-bearing Hadar Formation. These ages represent revision of previously published ages for the BKT-2 tephra and the Kadada Moumou basalt. BKT-2 is revised from 2.65 to 2.9 Myr BP and the Kadada Moumou basalt is revised from 3.0 to 3.6 Myr BP. (author)

  9. Factors Influencing Graft Choice in Revision Anterior Cruciate Ligament Reconstruction in the MARS Group.

    Science.gov (United States)

    Group, Mars

    2016-08-01

    It has not been known what drives revision anterior cruciate ligament (ACL) reconstruction graft choice in the past. We undertook this study to utilize the Multicenter ACL Revision Study (MARS) group and propensity score statistical analysis to determine the drivers of revision ACL reconstruction graft choice. We hypothesized that propensity analysis would demonstrate that individual surgeons still have significant impact on revision ACL reconstruction. Twelve hundred patients were enrolled in this longitudinal revision cohort by 83 surgeons at 52 sites. The median age was 26 years and 505 (42%) were females. One thousand forty-nine (87%) patients were undergoing their first ACL revision. Graft choice for revision ACL reconstruction for these patients was 48% autograft, 49% allograft, and 3% combination. The independent variables of this model included gender, age, ethnicity, body mass index, smoking status, sport, activity level, previous graft, revision number, surgeon, surgeon's opinion of failure, previous technical aspects, etc. Surgeons were defined as those who contributed more than 15 patients during the enrollment period. . We calculated a propensity score for graft type based on the predicted probability of receiving an allograft from a logistic regression model. Propensity scores demonstrated that surgeon, prior graft choice, and patient age each had significant influence on which graft type was chosen for the revision ACL reconstruction (p  allograft was 3.6 times more likely to be chosen for the revision. This current study demonstrates that the individual surgeon is ultimately the most important factor in revision ACL reconstruction graft choice. Additional statistically significant influences of graft choice included age, gender, previous graft choice, ACL revision number, concurrent medial collateral ligament/posteromedial repair, and opinion of the previous failure. This demonstrates that if graft choice is determined to impact outcome then

  10. SATEN: An Object-Oriented Web-Based Revision and Extraction Engine

    OpenAIRE

    Williams, Mary-Anne; Sims, Aidan

    2000-01-01

    SATEN is an object-oriented web-based extraction and belief revision engine. It runs on any computer via a Java 1.1 enabled browser such as Netscape 4. SATEN performs belief revision based on the AGM approach. The extraction and belief revision reasoning engines operate on a user specified ranking of information. One of the features of SATEN is that it can be used to integrate mutually inconsistent commensuate rankings into a consistent ranking.

  11. Factors Influencing Graft Choice in Revision Anterior Cruciate Ligament Reconstruction in the MARS Group.

    Science.gov (United States)

    Group, Mars

    2016-08-01

    It has not been known what drives revision anterior cruciate ligament (ACL) reconstruction graft choice in the past. We undertook this study to utilize the Multicenter ACL Revision Study (MARS) group and propensity score statistical analysis to determine the drivers of revision ACL reconstruction graft choice. We hypothesized that propensity analysis would demonstrate that individual surgeons still have significant impact on revision ACL reconstruction. Twelve hundred patients were enrolled in this longitudinal revision cohort by 83 surgeons at 52 sites. The median age was 26 years and 505 (42%) were females. One thousand forty-nine (87%) patients were undergoing their first ACL revision. Graft choice for revision ACL reconstruction for these patients was 48% autograft, 49% allograft, and 3% combination. The independent variables of this model included gender, age, ethnicity, body mass index, smoking status, sport, activity level, previous graft, revision number, surgeon, surgeon's opinion of failure, previous technical aspects, etc. Surgeons were defined as those who contributed more than 15 patients during the enrollment period. . We calculated a propensity score for graft type based on the predicted probability of receiving an allograft from a logistic regression model. Propensity scores demonstrated that surgeon, prior graft choice, and patient age each had significant influence on which graft type was chosen for the revision ACL reconstruction (p  allograft was 3.6 times more likely to be chosen for the revision. This current study demonstrates that the individual surgeon is ultimately the most important factor in revision ACL reconstruction graft choice. Additional statistically significant influences of graft choice included age, gender, previous graft choice, ACL revision number, concurrent medial collateral ligament/posteromedial repair, and opinion of the previous failure. This demonstrates that if graft choice is determined to impact outcome then

  12. The mechanical effect of the existing cement mantle on the in-cement femoral revision.

    LENUS (Irish Health Repository)

    Keeling, Parnell

    2012-08-01

    Cement-in-cement revision hip arthroplasty is an increasingly popular technique to replace a loose femoral stem which retains much of the original cement mantle. However, some concern exists regarding the retention of the existing fatigued and aged cement in such cement-in-cement revisions. This study investigates whether leaving an existing fatigued and aged cement mantle degrades the mechanical performance of a cement-in-cement revision construct.

  13. LEARNING TO WRITE FROM EACH OTHER:A PRACTICAL GUIDE FOR GROUP REVISION IN CLASSROOM

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Group revision has proved to be a very importantstep in process writing and yet it has not receivedmuch attention to in English teaching in China.Thispaper explores the problems related to peer group revi-sion in China,and provides suggestions for solving theproblems and a practical guide for group revision.In teaching writing to English majors in ShanxiTeachers’University in China,the author found aproblem which is common to all students in China.Though teachers have emphasised the importance ofrevision in writing and given students time to revise,students seem to benefit little from it.Later,withfurther study and experiments,the author found thatpeer group revision is an effective activity in helpingstudents benefit from revisions and improve theirwriting.Research on the process of composing emphasis-es both the role of revision in the evolution of thetext and the roe of feedback in the teaching andlearning of writing.Much research has been done onthe different aspects of peer group revision(Nelsonand Carson,1998;Villamil & Guerrero,1996).Based on these findings and the author’s own experi-ence,this paper is meant to provide a practical guideto how to ensure effective peer feedback and conse-quent revision.

  14. Update and revision of WHO air quality guidelines for Europe

    Energy Technology Data Exchange (ETDEWEB)

    Younes, M. [WHO European Centre for Environment and Health, Bilthoven (Netherlands). Bilthoven Div.

    1995-12-31

    The WHO Air Quality Guidelines for Europe (AQG), published in 1987, have provided a uniform basis for the development of strategies for the control of air pollution, and have contributed to the maintenance and improvement of public health in several countries. The aim of the guidelines is to provide a basis for protecting public health from adverse effects of air pollutants, and for eliminating or reducing to a minimum, those contaminants that are known or likely to be hazardous to human health and wellbeing. Since the publication of the first edition of the AQG, new scientific data in the fields of air pollution toxicology and epidemiology have accumulated and new developments in risk assessment methodologies have taken place, requiring updating and/or revision of the existing guidelines. This fact was recognized during the preparation of the initial work plan of the European Centre for Environment and Health, and it was recommended that the Centre undertake any necessary amendments and extensions to the Air Quality Guidelines. The updating procedure is being carried out in cooperation with the International Programme on Chemical Safety (IPCS) and the Commission of the European Communities (CEC) and will be implemented through working group meetings which require the preparation of working documents on specific air pollutants or mixtures and a final consultation to discuss the updated document.It was initiated by a Planning Meeting which was organized in January 1993. The purpose of the planning meeting was to set the framework for the updating and revision process, in particular to discuss the scope and purpose, the contents and the format of the revised AQG publication, to define the details of and the time schedule for the updating process and to identify the working groups needed and their way of operation. (author)

  15. Revised Mathematics Anxiety Rating Scale: A Confirmatory Factor Analysis

    Directory of Open Access Journals (Sweden)

    Ahmet AKIN

    2011-06-01

    Full Text Available The aim of this research is to adapt the Revised Mathematics Anxiety Rating Scale (R-MARS; Plake & Parker, 1982 to Turkish and to examine its psychometric properties. The research was conducted on 372 pre-service teachers. Results of exploratory and confirmatory factor analyses demonstrated that this scale yielded 2 factors, as original form and that the model was well fit. Internal consistency coefficient of the scale was .93 and test-retest reliability coefficient was .91. Also, corrected item-total correlations ranged .30 to .80. Thus, R-MARS can be used as a valid and reliable instrument in education and psychology.

  16. Revised delayed neutron data for Pickering NGS B

    International Nuclear Information System (INIS)

    Revised delayed neutron fractions and constants were calculated specifically for Pickering NGS B using the latest available delayed neutron data for fissionable isotopes, the currently recommended CANDU delayed photoneutron data, and the formulae provided by Laughton. Burnup-dependent number densities of the fissionable isotopes were computed with WIMS-AECL-IST. Validation and assessment of the new fractions and constants was performed by comparison of historical operating data with point kinetics simulation using the new values. Recommendations are made regarding possible improvements to the delayed neutron data. (author)

  17. [The revised system of hospitalization for medical care and protection].

    Science.gov (United States)

    Fukuo, Yasuhisa

    2014-01-01

    The Act to Partially Amend the Act on Mental Health and Welfare for the Mentally Disabled was passed on June 13, 2013. Major amendments regarding hospitalization for medical care and protection include the points listed below. The guardianship system will be abolished. Consent by a guardian will no longer be required in the case of hospitalization for medical care and protection. In the case of hospitalization for medical care and protection, the administrators of the psychiatric hospital are required to obtain the consent of one of the following persons: spouse, person with parental authority, person responsible for support, legal custodian, or curator. If no qualified person is available, consent must be obtained from the mayor, etc. of the municipality. The following three obligations are imposed on psychiatric hospital administrators. (1) Assignment of a person, such as a psychiatric social worker, to provide guidance and counseling to patients hospitalized for medical care and protection regarding their postdischarge living environment. (2) Collaboration with community support entities that consult with and provide information as necessary to the person hospitalized, their spouse, a person with parental authority, a person responsible for support, or their legal custodian or curator. (3) Organizational improvements to promote hospital discharge. With regard to requests for discharge, the revised law stipulates that, in addition to the person hospitalized with a mental disorder, others who may file a request for discharge with the psychiatric review board include: the person's spouse, a person with parental authority, a person responsible for support, or their legal custodian or curator. If none of the above persons are available, or if none of them are able to express their wishes, the mayor, etc. of the municipality having jurisdiction over the place of residence of the person hospitalized may request a discharge. In order to promote transition to life in the

  18. Revision control in the Grid era: The Unmet challenge

    Energy Technology Data Exchange (ETDEWEB)

    Arthur Kreymer

    2003-10-01

    As we move to distribute High Energy Physics computing tasks throughout the global Grid, they are encountering ever more severe difficulties installing and selecting appropriate versions of the supporting products. Problems show up at every level: the base operating systems and tools, general purpose utilities like root, and specific releases of application code. The author discusses some specific examples, including what we've learned in commissioning the SAM software for use by CDF. The author also shows why revision control can be a truly difficult problem, and will discuss what we've been doing to measure and control the situation.

  19. Toxicity considerations when revising the Nordic nutrition recommendations.

    Science.gov (United States)

    Sandström, B

    1998-02-01

    The Nordic countries have issued common nutrition recommendations since 1980. In connection with the 3rd revision, a joint working group of nutritionists and toxicologists assessed the toxicology of selected trace elements. Values for upper limits of intake were established for iron, zinc, iodine and selenium. The safety factors between the lowest intakes at which adverse effects had been reported and the suggested upper limits of intake were small. In the toxicological evaluation of upper safe intake levels of essential trace elements, interactions between trace elements as well as long-term exposure to moderately elevated trace element intakes have to be considered. PMID:9478028

  20. A REVISED CONJUGATE GRADIENT PROJECTION ALGORITHM FOR INEQUALITY CONSTRAINED OPTIMIZATIONS

    Institute of Scientific and Technical Information of China (English)

    Wei Wang; Lian-sheng Zhang; Yi-fan Xu

    2005-01-01

    A revised conjugate gradient projection method for nonlinear inequality constrained optimization problems is proposed in the paper, since the search direction is the combination of the conjugate projection gradient and the quasi-Newton direction. It has two merits. The one is that the amount of computation is lower because the gradient matrix only needs to be computed one time at each iteration. The other is that the algorithm is of global convergence and locally superlinear convergence without strict complementary condition under some mild assumptions. In addition the search direction is explicit.

  1. ERD UMTRA Project quality assurance program plan, Revision 7

    International Nuclear Information System (INIS)

    This document is the revised Quality Assurance Program Plan (QAPP) dated September, 1995 for the Environmental Restoration Division (ERD) Uranium Mill Tailings Remedial Action Project (UMTRA). Quality Assurance requirements for the ERD UMTRA Project are based on the criteria outlined in DOE Order 5700.6C or applicable sections of 10 CFR 830.120. QA requirements contained in this QAPP shall apply to all personnel, processes, and activities, including planning, scheduling, and cost control, performed by the ERD UMTRA Project and its contractors

  2. A revision of the genus Mecistostethus Marseul (Histeridae, Histerinae, Exosternini

    Directory of Open Access Journals (Sweden)

    Michael Caterino

    2012-08-01

    Full Text Available We revise the genus Mecistostethus Marseul, sinking the monotypic genus Tarsilister Bruch as a junior synonym. Mecistostethus contains six valid species: M. pilifer Marseul, M. loretoensis (Bruch, comb. n., M. seagorum sp. n., M. carltoni sp. n., M. marseuli sp. n., and M. flechtmanni sp. n. The few existing records show the genus to be widespread in tropical and subtropical South America, from northern Argentina to western Amazonian Ecuador and French Guiana. Only a single host record associates one species with the ant Pachycondyla striata Smith (Formicidae: Ponerinae, but it is possible that related ants host all the species.

  3. Hanford analytical sample projections FY 1996 - FY 2001. Revision 4

    Energy Technology Data Exchange (ETDEWEB)

    Joyce, S.M.

    1997-07-02

    This document summarizes the biannual Hanford sample projections for fiscal year 1997-2001. Sample projections are based on inputs submitted to Analytical Services covering Environmental Restoration, Tank Wastes Remediation Systems, Solid Wastes, Liquid Effluents, Spent Nuclear Fuels, Transition Projects, Site Monitoring, Industrial Hygiene, Analytical Services and miscellaneous Hanford support activities. In addition to this revision, details on Laboratory scale technology (development), Sample management, and Data management activities were requested. This information will be used by the Hanford Analytical Services program and the Sample Management Working Group to assure that laboratories and resources are available and effectively utilized to meet these documented needs.

  4. Recontouring, resurfacing, and scar revision in skin cancer reconstruction.

    Science.gov (United States)

    Brenner, Michael J; Perro, Christopher A

    2009-08-01

    Residual disfigurement is a common problem for patients who have undergone skin cancer reconstruction. Restoring form and function in these patients is an artistic and technical endeavor. The efficacy of surgical scar revision, dermabrasion, chemical peels, and laser resurfacing is predicated upon the skin's innate ability to regenerate over time in response to mechanical, chemical, and thermal or ablative stresses. The patient and surgeon should be accepting of a process that is often gradual and may proceed in stages. Achieving proficiency with the secondary procedures for improving scars and local flaps may allow the motivated surgeon to mold an initially passable surgical result into an excellent one. PMID:19698924

  5. Revision of the Norwegian annual monitoring programme for BSE

    OpenAIRE

    European Food Safety Authority

    2013-01-01

    This Scientific Report of EFSA provides scientific and technical assistance to the European Free Trade Association (EFTA) Surveillance Authority in evaluating i) if the Norwegian continuous use of fishmeal in feed for ruminants until 30 April 2010 has had an impact on the overall risk of BSE in the country; and ii) if a proposed Norwegian revised annual monitoring programme for BSE allows the detection of BSE with a yearly design prevalence of at least one case per 100,000 in the adult popula...

  6. Revised radiation emergency procedures at Pakistan research reactor PINSTECH

    International Nuclear Information System (INIS)

    Necessary procedures have been laid down in this report to meet the radiation emergency at Pakistan Research Reactor PINSTECH. The Nuclear Safety Committee PINSTECH (NSCP) had also recommended a number of improvements in the existing procedures. Revision of the procedures was also considered necessary to incorporate into it new radiation units/limits and new emergency equipment available. Radiation emergency preparedness programme is of continuous nature. Latest developments else-where and local experience contribute to the improvement of the existing arrangements under this programme. (A.B.)

  7. Algebra Sets, Symbols, and the Language of Thought (Revised Edition)

    CERN Document Server

    Tabak, John

    2011-01-01

    Algebra, Revised Edition describes the history of both strands of algebraic thought. This updated resource describes some of the earliest progress in algebra as well as some of the mathematicians in Mesopotamia, Egypt, China, and Greece who contributed to this early period. It goes on to explore the many breakthroughs in algebraic techniques as well as how letters were used to represent numbers. New material has been added to the chapter on "modern" algebra, a type of mathematical research that continues to occupy the attention of many mathematicians today.

  8. Revision of the genus Trypogeus Lacordaire, 1869 (Cerambycidae, Dorcasominae

    Directory of Open Access Journals (Sweden)

    Eduard Vives

    2015-05-01

    Full Text Available The ten species of the genus Trypogeus Lacordaire are revised. T. apicalis Fisher, 1936, is proposed as a new synonym of T. javanicus Aurivillius, 1925. A neotype for T. sericeus (Gressitt, 1951 and lectotypes for Toxotus fuscus Nonfried, 1894 and T. javanicus are designated. Trypogeus fuscus auct. nec Nonfried is a misidentification of Philus ophthalmicus Pascoe. All the species are described and keys are given for distinguishing the species. Photographs of the types of all the Trypogeus species are published for the first time.

  9. Energy-efficient computing and networking. Revised selected papers

    Energy Technology Data Exchange (ETDEWEB)

    Hatziargyriou, Nikos; Dimeas, Aris [Ethnikon Metsovion Polytechneion, Athens (Greece); Weidlich, Anke (eds.) [SAP Research Center, Karlsruhe (Germany); Tomtsi, Thomai

    2011-07-01

    This book constitutes the postproceedings of the First International Conference on Energy-Efficient Computing and Networking, E-Energy, held in Passau, Germany in April 2010. The 23 revised papers presented were carefully reviewed and selected for inclusion in the post-proceedings. The papers are organized in topical sections on energy market and algorithms, ICT technology for the energy market, implementation of smart grid and smart home technology, microgrids and energy management, and energy efficiency through distributed energy management and buildings. (orig.)

  10. Geometry The Language of Space and Form (Revised Edition)

    CERN Document Server

    Tabak, John

    2011-01-01

    Geometry, Revised Edition describes geometry in antiquity. Beginning with a brief description of some of the geometry that preceded the geometry of the Greeks, it takes up the story of geometry during the European Renaissance as well as the significant mathematical progress in other areas of the world. It also discusses the analytic geometry of Ren Descartes and Pierre Fermat, the alternative coordinate systems invented by Isaac Newton, and the solid geometry of Leonhard Euler. Also included is an overview of the geometry of one of the most successful mathematicians of the 19th century, Bernha

  11. Revised final report for tank 241-C-203, auger samples 95-AUG-20 and 95-AUG-21. Revision 1

    International Nuclear Information System (INIS)

    Two auger samples from tank 241-C-203 (C-203) were received at the 222-S Laboratories and underwent safety screening analyses, consisting of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and total alpha activity. No notification limits were exceeded for the analyses. Two samples were submitted for a density determination at the request of Characterization Plant Engineering. SCOPE This document is the revised final report for the tank C-203 auger samples collected on April 5, 1995 (samples 95-AUG-20 and 95-AUG-021)

  12. Hanford Site National Environmental Policy Act (NEPA) characterization. Revision 7

    Energy Technology Data Exchange (ETDEWEB)

    Cushing, C.E. [ed.; Baker, D.A.; Chamness, M.A. [and others

    1995-09-01

    This seventh revision of the Hanford Site National Environmental Policy (NEPA) Characterization presents current environmental data regarding the Hanford Site and its immediate environs. This information is intended for use in preparing Site-related NEPA documentation. Chapter 4.0 summarizes up-to-date information on climate and meteorology, geology, hydrology, environmental monitoring, ecology, history and archaeology, socioeconomics, land use, and noise levels prepared by Pacific Northwest Laboratory (PNL) staff. More detailed data are available from reference sources cited or from the authors. Chapter 5.0 was not updated from the sixth revision (1994). It describes models, including their principal underlying assumptions, that are to be used in simulating realized or potential impacts from nuclear materials at the Hanford Site. Included are models of radionuclide transport in groundwater and atmospheric pathways, and of radiation dose to populations via all known pathways from known initial conditions. The updated Chapter 6.0 provides the preparer with the federal and state regulations, DOE Orders and permits, and environmental standards directly applicable to the NEPA documents on the Hanford Site, following the structure of Chapter 4.0. No conclusions or recommendations are given in this report. Rather, it is a compilation of information on the Hanford Site environment that can be used directly by Site contractors. This information can also be used by any interested individual seeking baseline data on the Hanford Site and its past activities by which to evaluate projected activities and their impacts.

  13. Revised MITG design, fabrication procedure, and performance predictions

    Energy Technology Data Exchange (ETDEWEB)

    Schock, A.

    1983-01-01

    The design, analysis, and key features of the Modular Isotopic Thermoelectric Generator (MITG) were described in a 1981 IECEC paper; and the design, fabrication, testing, and post-test analysis of test assemblies simulating prototypical MITG modules were described in preceding papers in these proceedings. These analyses succeeded in identifying and explaining the principal causes of thermal-stress problems encountered in the tests, and in confirming the effectiveness of design changes for alleviating them. The present paper presents additional design improvements for solving these and other problems, and describes new thermoelectric material properties generated by independent laboratories over the past two years. Based on these changes and on a revised fabrication procedure, it presents a reoptimization of the MITG design and computes the power-to-weight ratio for the revised design. That ratio is appreciably lower than the 1981 prediction, primarily because of changes in material properties; but it is still much higher than the specific power of current-generation RTGs.

  14. Revised regulation on the Hiring of Domestic Staff in Switzerland

    CERN Multimedia

    2006-01-01

    The Permanent Mission of Switzerland has informed CERN of the publication of the official translation of the 'Directive on the hiring of private servants by staff members of diplomatic missions, permanent missions, consular posts and international organisations in Switzerland', which came into effect on 1st May 2006. The members of the personnel concerned are reminded that they must comply with the provisions of the revised Directive, which replaces that of 1st May 1998, and present a copy to their domestic staff. The full text of the revised Directive is available on the Swiss Mission's website: http://www.dfae.admin.ch/geneva_miss/f/home/guide/dir.html (original French version); http://www.dfae.admin.ch/geneva_miss/e/home/guide/dir.html (English translation). This notification cancels the information published in document CERN/DSU-DO/RH/9304 on 19 October 1999. Relations with the Host States Service Tel.: 72848 relations.secretariat@cern.ch www.cern.ch/relations

  15. The revised Declaration of Helsinki: cosmetic or real change?

    Science.gov (United States)

    Malik, Aisha Y; Foster, Charles

    2016-05-01

    The Declaration of Helsinki, adopted by the World Medical Association's General Assembly in 1964, is the most important set of guidelines about research on human participants. It both reflects and shapes the ethos of international research ethics. It is a living instrument and is reviewed and revised regularly. Its latest revision was in 2013. There are four substantial changes, reflected in the new Paragraph 15 (which deals with compensation for trial related injuries), Paragraph 33 (relating to placebos), Paragraph 20 (relating to vulnerable groups) and the new Paragraph 34 (relating to post-trial provisions). This article analyses these changes, and asks whether they indicate any shift in the overall philosophy of the Declaration. We conclude that these changes, though significant, are not tectonic. They accord with the spirit that has motivated the Declaration through all its iterations, and indicate a steady, incremental evolution towards a holistic code of research ethics for research on human participants. Patient autonomy, though crucial, is no longer the only concern of the Declaration; distributive justice and beneficence are motivating forces too. While the Declaration is aware of the need to facilitate research, it is equally aware of the need to protect the vulnerable, and of the practical difficulties involved in that protection. PMID:27150712

  16. Hanford Site National Environmental Policy Act (NEPA) Characterization, Revision 15

    Energy Technology Data Exchange (ETDEWEB)

    Neitzel, Duane A.; Bunn, Amoret L.; Burk, Kenneth W.; Cannon, Sandra D.; Duncan, Joanne P.; Fowler, Richard A.; Fritz, Brad G.; Harvey, David W.; Hendrickson, Paul L.; Horton, Duane G.; Last, George V.; Poston, Ted M.; Prendergast-Kennedy, Ellen L.; Reidel, Steve P.; Scott, Michael J.; Thorne, Paul D.; Woody, Dave M.

    2003-09-01

    This document describes the U.S. Department of Energy's (DOE) Hanford Site environment. It is updated each year and is intended to provide a consistent description of the Hanford Site environment for the many National Environmental Policy Act (NEPA) documents being prepared by DOE contractors. No statements of significance or environmental consequences are provided. This year's report is the thirteenth revision of the original document published in 1988 and is (until replaced by the fourteenth revision) the only version that is relevant for use in the preparation of Hanford NEPA, State Environmental Policy Act (SEPA), and Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) documents. The two chapters included in this document (Chapters 4 and 6) are numbered to correspond to the chapters where such information is typically presented in environmental impact statements (Weiss) and other Hanford Site NEPA or CERCLA documentation. Chapter 4.0 (Affected Environment) describes Hanford Site climate and meteorology, geology, hydrology, ecology, cultural, archaeological, and historical resources, socioeconomics, occupational safety, and noise. Chapter 6.0 (Statutory and Regulatory Requirements) describes federal and state laws and regulations, DOE directives and permits, and presidential executive orders that are applicable to the NEPA documents prepared for Hanford Site activities.

  17. Phylogenetic analysis and taxonomic revision of Physodactylinae (Coleoptera, Elateridae

    Directory of Open Access Journals (Sweden)

    Simone Policena Rosa

    2014-01-01

    Full Text Available A phylogeny based on male morphological characters and taxonomic revision of the Physodactylinae genera are presented. The phylogenetic analysis based on 66 male characters resulted in the polyphyly of Physodactylinae which comprises four independent lineages. Oligostethius and Idiotropia from Africa were found to be sister groups. Teslasena from Brazil was corroborated as belonging to Cardiophorinae clade. The South American genera Physodactylus and Dactylophysus were found to be sister groups and phylogenetically related to Heterocrepidius species. The Oriental Toxognathus resulted as sister group of that clade plus (Dicrepidius ramicornis (Lissomus sp, Physorhynus erythrocephalus. Taxonomic revisions include diagnoses and redescriptions of genera and distributional records and illustrations of species. Key to species of Teslasena, Toxognathus, Dactylophysus and Physodactylus are also provided. Teslasena lucasi is synonymized with T. femoralis. A new species of Dactylophysus is described, D. hirtus sp. nov., and lectotypes are designated to non-conspecific D. mendax sensu Fleutiaux and Heterocrepidius mendax Candèze. Physodactylus niger is removed from synonymy under P. oberthuri; P. carreti is synonymized with P. niger; P. obesus and P. testaceus are synonymized with P. sulcatus. Nine new species are described in Physodactylus: P. asper sp. nov., P. brunneus sp. nov., P. chassaini sp. nov., P. flavifrons sp. nov., P. girardi sp. nov., P. gounellei sp. nov., P. latithorax sp. nov., P. patens sp. nov. and P. tuberculatus sp. nov.

  18. Autologous hamstring tendon used for revision of quadiceps tendon tears.

    Science.gov (United States)

    McCormick, Frank; Nwachukwu, Benedict U; Kim, Jaehon; Martin, Scott D

    2013-04-01

    A paucity of literature exists on quadriceps tendon reruptures. Failed quadriceps tendon repair can cause significant morbidity and disability. Surgical management of quadriceps tendon rerupture can be challenging due to tissue degeneration, tendon retraction, muscle atrophy, and poor bone fixation. A lack of guidance in the literature exists on the appropriate surgical techniques for managing quadriceps tendon reruptures.This article describes the case of a male recreational athlete with a failed primary quadriceps tendon repair who presented 10 months after rerupture. Examination was significant for morbid obesity, assisted ambulation, and a significant defect at the superior pole of the patella on the affected side. Intraoperative findings were consistent with a 2.0- to 4.5-cm tendon defect across the extensor mechanism with complete retinaculi tears. The authors performed a novel surgical approach for revision of quadriceps tears using a bilateral hamstring autograft through a quadriceps tendon weave and a transosseous patellar repair. Tendon length was restored, and extensor mechanism tension was reapproximated. Postoperatively, the patient achieved a good outcome and had returned to full, painless, sport participation at 2-year follow-up.This surgical technique is suitable for revision quadriceps tendon repairs of large tendon gap defects, repairs desiring tendon-to-bone in-growth, and repairs requiring large-force transmission across the repair.

  19. Tank safety screening data quality objective. Revision 1

    Energy Technology Data Exchange (ETDEWEB)

    Hunt, J.W.

    1995-04-27

    The Tank Safety Screening Data Quality Objective (DQO) will be used to classify 149 single shell tanks and 28 double shell tanks containing high-level radioactive waste into safety categories for safety issues dealing with the presence of ferrocyanide, organics, flammable gases, and criticality. Decision rules used to classify a tank as ``safe`` or ``not safe`` are presented. Primary and secondary decision variables used for safety status classification are discussed. The number and type of samples required are presented. A tabular identification of each analyte to be measured to support the safety classification, the analytical method to be used, the type of sample, the decision threshold for each analyte that would, if violated, place the tank on the safety issue watch list, and the assumed (desired) analytical uncertainty are provided. This is a living document that should be evaluated for updates on a semiannual basis. Evaluation areas consist of: identification of tanks that have been added or deleted from the specific safety issue watch lists, changes in primary and secondary decision variables, changes in decision rules used for the safety status classification, and changes in analytical requirements. This document directly supports all safety issue specific DQOs and additional characterization DQO efforts associated with pretreatment and retrieval. Additionally, information obtained during implementation can assist in resolving assumptions for revised safety strategies, and in addition, obtaining information which will support the determination of error tolerances, confidence levels, and optimization schemes for later revised safety strategy documentation.

  20. Cement extractor device in revision prosthesis of the humerus.

    Science.gov (United States)

    Giannotti, Stefano; Bottai, Vanna; Dell'Osso, Giacomo; Bugelli, Giulia; Guido, Giulio

    2014-11-01

    In revision arthroplasty the surgeon is often faced with the problem of removal of residual cement in the medullary canal. Conventional manual cement removal by hand or power-driven instruments can be time-consuming, can require osteotomy, and can be associated with complications such as cortical perforation, fracture, or bone loss. Ultrasonic devices offer an alternative method of cement removal, but the potential for thermal injury exists, in particular for the humerus and the radial nerve. Considering these problems with the use of ultrasound, and whereas the old cement mantle may be left in place in the hip or knee but not in the shoulder, we tried this new mechanical cement extractor also in the humerus. We utilized this extractor in 5 cases, and we eliminated all residual resin in an accurate and complete way without bone loss and without iatrogenic fractures in all cases. We believe this system, which was designed for revisions of hip and knee surgery, is also suitable for the shoulder. PMID:25433154