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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

The development stories of equatorial Guinea and Botswana : a game theory model of how public-private partnerships can turn resources from a curse into a blessing  

E-Print Network [OSTI]

The growth acceleration episodes characterizing Botswana and Equatorial Guinea were based on the respective discoveries of diamonds and oil. However, while Botswana, already characterized by inclusive and democratic ...

Rizzati, Valentina

2013-01-01T23:59:59.000Z

2

Equatorial Guinea: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 NoSan Leandro,Law and Policy Center

3

U.S. LNG Imports from Equatorial Guinea  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet)per Thousand28 198 18 Q 10OriginSep-14 Oct-14Noyes,Noyes,

4

U.S. LNG Imports from Equatorial Guinea  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet)per Thousand28 198 18 Q 10OriginSep-14 Oct-14Noyes,Noyes,Noyes, MN

5

Central Equatorial Pacific Experiment (CEPEX)  

SciTech Connect (OSTI)

The Earth's climate has varied significantly in the past, yet climate records reveal that in the tropics, sea surface temperatures seem to have been remarkably stable, varying by less than a few degrees Celsius over geologic time. Today, the large warm pool of the western Pacific shows similar characteristics. Its surface temperature always exceeds 27[degree]C, but never 31[degree]C. Heightened interest in this observation has been stimulated by questions of global climate change and the exploration of stabilizing climate feedback processes. Efforts to understand the observed weak sensitivity of tropical sea surface temperatures to climate forcing has led to a number of competing ideas about the nature of this apparent thermostat. Although there remains disagreement on the processes that regulate tropical sea surface temperature, most agree that further progress in resolving these differences requires comprehensive field observations of three-dimensional water vapor concentrations, solar and infrared radiative fluxes, surface fluxes of heat and water vapor, and cloud microphysical properties. This document describes the Central Equatorial Pacific Experiment (CEPEX) plan to collect such observations over the central equatorial Pacific Ocean during March of 1993.

Not Available

1993-01-01T23:59:59.000Z

6

Price of Elba Island, GA Natural Gas LNG Imports from Equatorial Guinea  

U.S. Energy Information Administration (EIA) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2007 10,998 9,933 10,998 10,643 10,998through 1996)DecadeYear(Dollars per Thousand CubicDollars

7

Lake Charles, LA Natural Gas LNG Imports from Equatorial Guinea (Dollars  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342 328 370 396After898 701 3719343per

8

U.S. Liquefied Natural Gas Imports From Equatorial Guinea (Million Cubic  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines AboutDecemberSteamYearTexas--StateWinter 2013-14 Wells (ThousandYear Jan Feb Mar Apr

9

U.S. Liquefied Natural Gas Imports From Equatorial Guinea (Million Cubic  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines AboutDecemberSteamYearTexas--StateWinter 2013-14 Wells (ThousandYear Jan Feb Mar

10

Price of U.S. Liquefied Natural Gas Imports From Equatorial Guinea (Dollars  

U.S. Energy Information Administration (EIA) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia,(Million Barrels) Crude Oil Reserves in NonproducingAdditions to Capacity on theThousand Cubic Feet) Year Janper

11

Price of U.S. Liquefied Natural Gas Imports From Equatorial Guinea (Dollars  

U.S. Energy Information Administration (EIA) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2007 10,998 9,933 10,998 10,643 10,998throughThousand Cubic Feet)Thousand CubicTexasThousandThousandper

12

Price of U.S. Liquefied Natural Gas Imports From Equatorial Guinea (Dollars  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30 2013 Macroeconomicper8,170Thousand Cubic Feet)Thousandper Thousand Cubic

13

,"U.S. Liquefied Natural Gas Imports From Equatorial Guinea (MMcf)"  

U.S. Energy Information Administration (EIA) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: EnergyShale ProvedTexas"Brunei (Dollars perReserves (BillionCanada (MMcf)"

14

U.S. Liquefied Natural Gas Imports From Equatorial Guinea (Million Cubic  

U.S. Energy Information Administration (EIA) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2007York"Hawaii" "Sector", (Million CubicAdjustments7-2015 LiquefiedDecadeDecade

15

Forming equatorial rings around dying stars  

E-Print Network [OSTI]

We suggest that clumpy-dense outflowing equatorial rings around evolved giant stars, such as in supernova 1987A and the Necklace planetary nebula, are formed by bipolar jets that compress gas toward the equatorial plane. The jets are launched from an accretion disk around a stellar companion. Using the FLASH hydrodynamics numerical code we perform 3D numerical simulations, and show that bipolar jets expanding into a dense spherical shell can compress gas toward the equatorial plane and lead to the formation of an expanding equatorial ring. Rayleigh-Taylor instabilities in the interaction region break the ring to clumps. Under the assumption that the same ring-formation mechanism operates in massive stars and in planetary nebulae, we find this mechanism to be more promising for ring formation than mass loss through the second Lagrangian point. The jets account also for the presence of a bipolar nebula accompanying many of the rings.

Akashi, Muhammad; Yogev, Ohad; Soker, Noam

2015-01-01T23:59:59.000Z

16

Decadal changes in the equatorial Pacific circulation  

E-Print Network [OSTI]

An ocean general circulation model with data assimilation is used to analyze the decadal changes in the tropical Pacific Ocean circulation. Results indicate that the variability in the Equatorial Undercurrent (EUC) and subtropical cells (STC) have...

Urizar, S. Cristina

2002-01-01T23:59:59.000Z

17

Petroleum Service Projects in the Gulf of Guinea  

E-Print Network [OSTI]

carried out by the OIS group in the gulf of Guinea. The following are the specific projects in the Gulf of Guinea that I participated in: Managing delivering, maintenance and marketing of offshore vessels, Offshore pipe laying project, Integrated pipeline...

Ken-Worgu, Kenneth Chukwumeka

2011-10-21T23:59:59.000Z

18

Drowned carbonate platforms in the Bismarck Sea, Papua New Guinea  

E-Print Network [OSTI]

subsidence caused by G. Hoffmann (&) Á E. Silver UniversitySea, Papua New Guinea Gary Hoffmann • Eli Silver • Simon Day

Hoffmann, Gary; Silver, Eli; Day, Simon; Driscoll, Neal; Appelgate, Bruce

2009-01-01T23:59:59.000Z

19

Central Equatorial Pacific Experiment (CEPEX). Design document  

SciTech Connect (OSTI)

The Earth`s climate has varied significantly in the past, yet climate records reveal that in the tropics, sea surface temperatures seem to have been remarkably stable, varying by less than a few degrees Celsius over geologic time. Today, the large warm pool of the western Pacific shows similar characteristics. Its surface temperature always exceeds 27{degree}C, but never 31{degree}C. Heightened interest in this observation has been stimulated by questions of global climate change and the exploration of stabilizing climate feedback processes. Efforts to understand the observed weak sensitivity of tropical sea surface temperatures to climate forcing has led to a number of competing ideas about the nature of this apparent thermostat. Although there remains disagreement on the processes that regulate tropical sea surface temperature, most agree that further progress in resolving these differences requires comprehensive field observations of three-dimensional water vapor concentrations, solar and infrared radiative fluxes, surface fluxes of heat and water vapor, and cloud microphysical properties. This document describes the Central Equatorial Pacific Experiment (CEPEX) plan to collect such observations over the central equatorial Pacific Ocean during March of 1993.

Not Available

1993-04-01T23:59:59.000Z

20

ATP is released from guinea pig ureter epithelium on distension  

E-Print Network [OSTI]

ATP is released from guinea pig ureter epithelium on distension G. E. KNIGHT,1 P. BODIN,1 W. C. DE Knight, G. E., P. Bodin, W. C. De Groat, and G. Burn- stock. ATP is released from guinea pig ureter.2001.--Distension of the perfused guinea pig ureter at pressures from 20 to 700 cmH2O in- creased the amount of ATP

Burnstock, Geoffrey

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Papua New Guinea: World Oil Report 1991  

SciTech Connect (OSTI)

This paper reports on oil exploration which is booming in Papua New Guinea (PNG) following a rash of license applications and farm-ins. Most activity is onshore, but success is beginning to drift offshore. Currently, 40 petroleum prospecting licenses (PPL) and one producing license are active, and eight more PPL applications are being considered. PNG is expected to become an oil exporter by September 1992 when initial production is expected from Iagifu, Hedina and Agogo fields.

Not Available

1991-08-01T23:59:59.000Z

22

ARM Research in the Equatorial Western Pacific: A Decade and Counting  

SciTech Connect (OSTI)

The tropical western Pacific (TWP) is an important climatic region. Strong solar heating, warm sea surface temperatures and the annual progression of the Intertropical Convergence Zone (ITCZ) across this region generate abundant convective systems, which through their effects on the heat and water budgets have a profound impact on global climate and precipitation. To accurately represent tropical cloud systems in models, measurements of tropical clouds, the environment in which they reside, and their impact on the radiation and water budgets are needed. Because of the remote location, ground-based datasets of cloud, atmosphere, and radiation properties from the TWP region have traditionally come primarily from short-term field experiments. While providing extremely useful information on physical processes, these datasets are limited in statistical and climatological information because of their short duration. To provide long-term measurements of the surface radiation budget in the tropics, and the atmospheric properties that affect it, the Atmospheric Radiation Measurement program established a measurement site on Manus Island, Papua New Guinea in 1996 and on the island republic of Nauru in late 1998. These sites provide unique datasets available from more than 10 years of operation in the equatorial western Pacific on Manus and Nauru. We present examples of the scientific use of these datasets including characterization of cloud properties, analysis of cloud radiative forcing, model studies of tropical clouds and processes, and validation of satellite algorithms. We also note new instrumentation recently installed at the Manus site that will expand opportunities for tropical atmospheric science.

Long, Charles N.; McFarlane, Sally A.; Del Genio, Anthony D.; Minnis, Patrick; Ackerman, Thomas P.; Mather, James H.; Comstock, Jennifer M.; Mace, Gerald G.; Jensen, Michael; Jakob, Christian

2013-05-22T23:59:59.000Z

23

Geomagnetic equatorial anomaly in zonal plasma flow  

SciTech Connect (OSTI)

The authors report here on the observation of a geomagnetic signature in the zonal eastward plasma flow, which is a striking feature of the equatorial ionosphere in the evening quadrant. These observations were derived from (E {times} B)/B{sup 2} measurements made with the cylindrical double floating probe experiment carried on the Dynamics Explorer 2 (DE 2) satellite. The signature consists of a crest-trough-crest effect in the latitude dependence of the eastward plasma flow with the crests at {plus minus}8{degree} dip latitude and the trough nearly centered at the dip equator at all geographic longitudes. This phenomenon can be readioly interpreted in terms of the altitude dependence of the F region dynamo electric field, and it is related to dip equator signatures in the plasma density and the magnetic declinatoin which have been reported earlier.

Aggson, T.L.; Herrero, F.A.; Mayr, H.G.; Brace, L.H. (NASA Goddard Space Flight Center, Greenbelt, MD (United States)); Maynard, N.C. (Air Force Geophysics, Hanscom AFB, MA (United States)); Liebrecht, M.C. (Science Applications Research, Inc., Lanham, MD (United States))

1987-01-01T23:59:59.000Z

24

1 Drivers of the projected changes to the Pacific Ocean 2 equatorial circulation  

E-Print Network [OSTI]

1 Drivers of the projected changes to the Pacific Ocean 2 equatorial circulation 3 A. Sen Gupta,1 A), 29 Drivers of the projected changes to the Pacific Ocean equatorial 30 circulation, Geophys. Res. Lett., 39, LXXXXX, doi:10.1029/ 31 2012GL051447. 32 1. Introduction 33 [2] The equatorial Pacific Ocean

Paris-Sud XI, Université de

25

E-Print Network 3.0 - african equatorial margin Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

margin Page: << < 1 2 3 4 5 > >> 1 Proposed Research Studentship Plate modelling, transform faults and the Cretaceous to Summary: Project Description The African equatorial...

26

E-Print Network 3.0 - adult guinea pig Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

; Engineering 37 Washington University Can the Sound Generated by Modern Wind Turbines Summary: ;Washington University Hearing in guinea pigs compared to humansHearing in...

27

Transition from inspiral to plunge for eccentric equatorial Kerr orbits  

E-Print Network [OSTI]

Ori and Thorne have discussed the duration and observability (with LISA) of the transition from circular, equatorial inspiral to plunge for stellar-mass objects into supermassive ($10^{5}-10^{8}M_{\\odot}$) Kerr black holes. We extend their computation to eccentric Kerr equatorial orbits. Even with orbital parameters near-exactly determined, we find that there is no universal length for the transition; rather, the length of the transition depends sensitively -- essentially randomly -- on initial conditions. Still, Ori and Thorne's zero-eccentricity results are essentially an upper bound on the length of eccentric transitions involving similar bodies (e.g., $a$ fixed). Hence the implications for observations are no better: if the massive body is $M=10^{6}M_{\\odot}$, the captured body has mass $m$, and the process occurs at distance $d$ from LISA, then $S/N \\lesssim (m/10 M_{\\odot})(1\\text{Gpc}/d)\\times O(1)$, with the precise constant depending on the black hole spin. For low-mass bodies ($m \\lesssim 7 M_\\odot$...

O'Shaughnessy, R

2003-01-01T23:59:59.000Z

28

Transition from inspiral to plunge for eccentric equatorial Kerr orbits  

E-Print Network [OSTI]

Ori and Thorne have discussed the duration and observability (with LISA) of the transition from circular, equatorial inspiral to plunge for stellar-mass objects into supermassive ($10^{5}-10^{8}M_{\\odot}$) Kerr black holes. We extend their computation to eccentric Kerr equatorial orbits. Even with orbital parameters near-exactly determined, we find that there is no universal length for the transition; rather, the length of the transition depends sensitively -- essentially randomly -- on initial conditions. Still, Ori and Thorne's zero-eccentricity results are essentially an upper bound on the length of eccentric transitions involving similar bodies (e.g., $a$ fixed). Hence the implications for observations are no better: if the massive body is $M=10^{6}M_{\\odot}$, the captured body has mass $m$, and the process occurs at distance $d$ from LISA, then $S/N \\lesssim (m/10 M_{\\odot})(1\\text{Gpc}/d)\\times O(1)$, with the precise constant depending on the black hole spin. For low-mass bodies ($m \\lesssim 7 M_\\odot$) for which the event rate is at least vaguely understood, we expect little chance (probably [much] less than 10%, depending strongly on the astrophysical assumptions) of LISA detecting a transition event with $S/N>5$ during its run; however, even a small infusion of higher-mass bodies or a slight improvement in LISA's noise curve could potentially produce $S/N>5$ transition events during LISA's lifetime.

R. O'Shaughnessy

2002-11-07T23:59:59.000Z

29

CI-OFF Ex A (Rev. 0.2, 4/9/13) Exhibit A General Conditions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Democratic Republic of Congo, Djibouti, East Timor, Equatorial Guinea, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Lesotho, Liberia, Madagascar,...

30

NCIPO Ex A (Rev. 2.1, 4/9/13) Exhibit A General Conditions  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Democratic Republic of Congo, Djibouti, East Timor, Equatorial Guinea, Eritrea, Ethiopia, Gambia, Guinea, Guinea-Bissau, Haiti, Kiribati, Laos, Lesotho, Liberia, Madagascar,...

31

Origin of the Spring-time Westerly Bias in Equatorial Atlantic Surface Winds in  

E-Print Network [OSTI]

-atmosphere interaction generally rules. #12;Page 2 of 32 1. Introduction Trade winds (easterlies) prevail over most) in the central and eastern basins; and vice-versa. Along the equator, easterly winds generate equatorialOrigin of the Spring-time Westerly Bias in Equatorial Atlantic Surface Winds in CAM3/CCSM3 Model

Carton, James

32

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean  

E-Print Network [OSTI]

Variation of the Thermohaline Structure in the Western Equatorial Pacific Upper Ocean;Abstract Processes which control the upper ocean thermohaline structure in the western equa- torial Pacific forcing data have indicated that the thick isothermal layer in the western equatorial Pacific is found

Luther, Douglas S.

33

Effects of correcting salinity with altimeter measurements in an equatorial Pacific ocean model  

E-Print Network [OSTI]

Effects of correcting salinity with altimeter measurements in an equatorial Pacific ocean model in a tropical Pacific ocean model run for the period 1993­1997. Salinity and temperature corrections salinity with altimeter measurements in an equatorial Pacific ocean model, J. Geophys. Res., 107(C12), 8001

van Leeuwen, Peter Jan

34

A deeper respired carbon pool in the glacial equatorial Pacific Ocean L.I. Bradtmiller a,  

E-Print Network [OSTI]

A deeper respired carbon pool in the glacial equatorial Pacific Ocean L.I. Bradtmiller a, , R in paleoceanography. We present evidence from ten equatorial Pacific Ocean sediment cores to show that the deep Pacific Ocean likely stored more carbon during the last glacial period than the Holocene

Sachs, Julian P.

35

Extremes of the Indian summer monsoon rainfall, ENSO and equatorial Indian Ocean oscillation  

E-Print Network [OSTI]

Extremes of the Indian summer monsoon rainfall, ENSO and equatorial Indian Ocean oscillation with suppression/enhancement over the eastern part and associated changes in the anomaly of the zonal wind along), Extremes of the Indian summer monsoon rainfall, ENSO and equatorial Indian Ocean oscillation, Geophys. Res

Gadgil, Siddhartha

36

Climate Change over the Equatorial Indo-Pacific in Global Warming* CHIE IHARA, YOCHANAN KUSHNIR, AND MARK A. CANE  

E-Print Network [OSTI]

Climate Change over the Equatorial Indo-Pacific in Global Warming* CHIE IHARA, YOCHANAN KUSHNIR to global warming is investigated using model outputs submitted to the Intergovernmental Panel on Climate equatorial Indian Ocean warm more than the SSTs in the eastern equatorial Indian Ocean under global warming

37

Iron and silicate regulation of new and export production in the equatorial Pacific: A physical-biological model study  

E-Print Network [OSTI]

Iron and silicate regulation of new and export production in the equatorial Pacific: A physical and silicate availability on phytoplankton growth in the equatorial Pacific. The effects of elevated iron and silicate regulation of new and export production in the equatorial Pacific: A physical-biological model

Maine, University of

38

AUSTRALIA BELGIUM CHINA FRANCE GERMANY HONG KONG SAR INDONESIA (ASSOCIATED OFFICE) ITALY JAPAN PAPUA NEW GUINEA SAUDI ARABIA SINGAPORE SPAIN SWEDEN  

E-Print Network [OSTI]

PAPUA NEW GUINEA SAUDI ARABIA SINGAPORE SPAIN SWEDEN UNITED ARAB EMIRATES UNITED KINGDOM UNITED STATES

Royal Holloway, University of London

40

,"Price of U.S. Liquefied Natural Gas Imports From Equatorial Guinea (Dollars per Thousand Cubic Feet)"  

U.S. Energy Information Administration (EIA) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: EnergyShale ProvedTexas"Brunei (Dollars per Thousand Cubic Feet)" ,"ClickEgypt

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

The daily cycle of fluorescence in vivo in the Central Equatorial Pacific  

E-Print Network [OSTI]

, while diatoms (3, 080 cells liter ), coccolithophores (4, 800 cells liter ) and dinoflagellates (3, 110 cells liter ) were present in approximately equivalent densities. By comparison, an earlier study of Hasle (1959) in the Equatorial Pacific...

Setser, Patrick James

1980-01-01T23:59:59.000Z

42

Strengthening of the Pacific Equatorial Undercurrent in the SODA Reanalysis: Mechanisms, Ocean Dynamics, and Implications  

E-Print Network [OSTI]

Several recent studies utilizing global climate models predict that the Pacific Equatorial Undercurrent (EUC) will strengthen over the twenty-first century. Here, historical changes in the tropical Pacific are investigated ...

Karnauskas, Kristopher B.

43

Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?  

E-Print Network [OSTI]

Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific] The paleoceanographic recording fidelity of pelagic sediments is limited by chemical diagenesis and physical mixing (bioturbation and horizontal sediment transport). Diagenesis and bioturbation are relatively well

Kurapov, Alexander

44

Preliminary Report on the Feeding Habits of Tunas in the Gulf of Guinea  

E-Print Network [OSTI]

) and 72 skipjack tuna ( Katsuwonus pelamis ), captured in the Gulf of Guinea, contained mostly fishes ( Katsuwonus pelamis) are shown in figure 1. During the surveys, 171 yellowfin and 72 skipjack tunas were

45

T cell response to oral immunization with cow's milk proteins in guinea pigs  

E-Print Network [OSTI]

were found to be the most common sensitizing T cell antigens in orally sensitized guinea pigs. The lymphocyte stimulation assay with highly purified antigens could be useful in the diagnosis of cow's milk allergy in humans....

Chitla, Suhasini Reddy

1994-01-01T23:59:59.000Z

46

Biophysical responses near equatorial islands in the Western Pacific Ocean during El Nio/La Nia transitions  

E-Print Network [OSTI]

Biophysical responses near equatorial islands in the Western Pacific Ocean during El Niño/La Niña 2013. [1] The biological response in the western equatorial Pacific Ocean during El Niño/La Niña responses near equatorial islands in the Western Pacific Ocean during El Niño/La Niña transitions, Geophys

Paris-Sud XI, Université de

47

Concept development for the ITER equatorial port visible/infrared wide angle viewing system  

SciTech Connect (OSTI)

The ITER equatorial port visible/infrared wide angle viewing system concept is developed from the measurement requirements. The proposed solution situates 4 viewing systems in the equatorial ports 3, 9, 12, and 17 with 4 views each (looking at the upper target, the inner divertor, and tangentially left and right). This gives sufficient coverage. The spatial resolution of the divertor system is 2 times higher than the other views. For compensation of vacuum-vessel movements, an optical hinge concept is proposed. Compactness and low neutron streaming is achieved by orienting port plug doglegs horizontally. Calibration methods, risks, and R and D topics are outlined.

Reichle, R.; Beaumont, B.; Boilson, D.; Bouhamou, R.; Direz, M.-F.; Encheva, A.; Henderson, M.; Kazarian, F.; Lamalle, Ph.; Lisgo, S.; Mitteau, R.; Patel, K. M.; Pitcher, C. S.; Pitts, R. A.; Prakash, A.; Raffray, R.; Schunke, B.; Snipes, J.; Diaz, A. Suarez; Udintsev, V. S. [ITER Organization, Route de Vinon-sur-Verdon, 13115 St Paul-lez-Durance (France); and others

2012-10-15T23:59:59.000Z

48

Hydrogen bonding preference of equatorial versus axial hydroxyl groups in pyran and cyclohexane rings in organic crystals  

E-Print Network [OSTI]

Paper Hydrogen bonding preference of equatorial versus axial hydroxyl groups in pyran of the hydrogen bonding counts in crystalline pyranose monosaccharides, we noticed that equatorial hydroxyls formed more hydrogen bonds, on average, than axial groups. A survey of the Cambridge Structural Database

de Gispert, Adrià

49

Micro-phytoplankton biomass of the equatorial Pacific in spring 1992  

E-Print Network [OSTI]

Along one transect in the eastern equatorial Pacific Ocean the micro-phytoplankton (>15 gm in one dimension) biomass in the upper 200 in was examined. The samples were taken during the most recent El Nifio event and examined in the light microscope...

Liu, Duan

1995-01-01T23:59:59.000Z

50

Estimating Central Equatorial Pacific SST Variability over the Past Millennium. Part II: Reconstructions and Implications  

E-Print Network [OSTI]

Estimating Central Equatorial Pacific SST Variability over the Past Millennium. Part II boundary conditions. Wavelet coherence analysis reveals a robust antiphasing between solar forcing and Ni@usc.edu 1 APRIL 2013 E M I L E - G E A Y E T A L . 2329 DOI: 10.1175/JCLI-D-11-00511.1 Ã? 2013 American

Wittenberg, Andrew

51

Convectively Coupled Waves Propagating along an Equatorial ITCZ JULIANA DIAS AND OLIVIER PAULUIS  

E-Print Network [OSTI]

Convectively Coupled Waves Propagating along an Equatorial ITCZ JULIANA DIAS AND OLIVIER PAULUIS waves propagate at the moist gravity wave speed (about 15 m s21 ), whereas for a narrow ITCZ, the propagation speed is comparable to the dry gravity wave (about 50 m s21 ). It is also shown that a Kelvin wave

Pauluis, Olivier M.

52

SEDIMENT TRANSPORT AND DEPOSITION IN THE OK TEDI-FLY RIVER SYSTEM, PAPUA NEW GUINEA  

E-Print Network [OSTI]

SEDIMENT TRANSPORT AND DEPOSITION IN THE OK TEDI-FLY RIVER SYSTEM, PAPUA NEW GUINEA: THE MODELING. This sediment flows from the Ok Tedi to the Fly River, eventually reaching the Gulf of Papua. This document River. The second author of this report has been served as the sediment transport consultant for Ok Tedi

Parker, Gary

53

Beta diversity of frogs in the forests of New Guinea, Amazonia and Europe  

E-Print Network [OSTI]

ORIGINAL ARTICLE Beta diversity of frogs in the forests of New Guinea, Amazonia and Europe are characterized by low beta diversity, both in tropical and in temperate areas. Location Lowland forests tracking. The community data were analysed for alpha and beta diversity. Results Local (alpha) diversity

54

Substrate-limited electron dynamics in graphene S. Fratini1,2 and F. Guinea2  

E-Print Network [OSTI]

Substrate-limited electron dynamics in graphene S. Fratini1,2 and F. Guinea2 1Institut Néel dynamics in graphene. We find that the quasiparticle spectrum acquires a finite broadening due to the long-range interaction with the polar modes at the interface between graphene and the substrate. This mechanism results

Boyer, Edmond

55

Humans and Volcanoes in Australia and New Guinea. Peter Bindon (1)  

E-Print Network [OSTI]

as a resource. 1 1. Anthropology Department, Western Australian Museum, Perth 6000 AUSTRALIA 2. CDRADHumans and Volcanoes in Australia and New Guinea. Peter Bindon (1) and Jean-Paul Raynal (2) ,1 de mythes d'aquisition du feu. FIRST COLONIZATION OF AUSTRALIA The occupation of greater Australia

Boyer, Edmond

56

REVIEW OF POLYRHACHIS (CYRTOMYRMA) FOREL (HYMENOPTERA: FORMICIDAE: FORMICINAE) OF AUSTRALIA, BORNEO, NEW GUINEA  

E-Print Network [OSTI]

, NEW GUINEA AND THE SOLOMON ISLANDS WITH DESCRIPTIONS OF NEW SPECIES RUDOLF J. KOHOUT Kohout, R.J. 2006. Kohout, Queensland Museum, PO Box 3300, South Brisbane 4101, Australia (email: kohout@powerup.com.au); 22 (Robson & Kohout, 2005). Examination ofAustralian material revealed several new species, particularly

Villemant, Claire

57

Progress of the ITER equatorial vis/IR wide angle viewing system optical design  

SciTech Connect (OSTI)

The equatorial vis/IR wide angle viewing system is present in four ITER diagnostic equatorial ports. This instrument will cover a large field of view with high spatial and temporal resolutions, to provide real time temperature measurements of plasma facing components, spectral data in the visible range, information on runaway electrons, and pellet tracking. This diagnostic needs to be reliable, precise, and long lasting. Its design is driven by both the tokamak severe environment and the high performances required for machine protection. The preliminary design phase is ongoing. Paramount issues are being tackled, relative to wide spectral band optical design, material choice, and optomechanical difficulties due to the limited space available for this instrument in the ports, since many other diagnostics and services are also present. Recent progress of the diagnostic optical design and status of associated R and D are presented.

Davi, M.; Corre, Y.; Guilhem, D.; Jullien, F.; Reichle, R.; Salasca, S.; Travere, J. M. [Association Euratom CEA, CEA/DSM/IRFM, Cadarache, 13108 Saint-Paul-lez-Durance (France); Cal, E. de la; Manzanares, A.; Pablos, J. L. de [Association Euratom CIEMAT, Av. Complutense 22, 28040 Madrid (Spain); Migozzi, J. B. [JBM Optique, 11 Av. de la division Leclerc, 92310 Sevres (France)

2008-10-15T23:59:59.000Z

58

Radiocarbon as a thermocline proxy for the eastern equatorial Pacific Keith B. Rodgers, Olivier Aumont, Gurvan Madec, and Christophe Menkes  

E-Print Network [OSTI]

Radiocarbon as a thermocline proxy for the eastern equatorial Pacific Keith B. Rodgers, Olivier Aumont, Gurvan Madec, and Christophe Menkes Laboratoire d'Oce´anographie Dynamique et de Climatologie

Schrag, Daniel

59

Cross-equatorial influences of a South American cold surge on the development of two eastern North Pacific tropical cyclones  

E-Print Network [OSTI]

CROSS-EQUATORIAL INFLUENCES OF A SOUTH AMERICAN COLD SURGE ON THE DEVELOPMENT OF TWO EASTERN NORTH PACIFIC TROPICAL CYCLONES A Thesis by VICKI ANNE MILLIER Submitted to the Oflice of Graduate Studies of' Texas ASM University in partial fu...1611ment of the requirements for the degree of MASTER OF SCIENCE December 1989 Major Subject: Meteorology CROSS-EQUATORIAL INFLUENCES OF A SOUTH AMERICAN COLD SURGE ON THE DEVELOPMENT OF TWO EASTERN NORTH PACIFIC TROPICAL CYCLONES A Thesis...

Millier, Vicki Anne

1989-01-01T23:59:59.000Z

60

Signature of the coronal hole near the north crest equatorial anomaly over Egypt during the strong geomagnetic storm  

E-Print Network [OSTI]

Signature of the coronal hole near the north crest equatorial anomaly over Egypt during the strong hole effect. We use multi-instruments as SCINDA-GPS station at Helwan, Egypt (29.86 N, 31.32 E) and ASW-MAGDAS station at Aswan, Egypt (23.59 N, 32.51 E) in the equatorial region. At the beginning of the storm our

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Optimization of the ITER electron cyclotron equatorial launcher for improved heating and current drive functional capabilities  

SciTech Connect (OSTI)

The design of the ITER Electron Cyclotron Heating and Current Drive (EC H and CD) system has evolved in the last years both in goals and functionalities by considering an expanded range of applications. A large effort has been devoted to a better integration of the equatorial and the upper launchers, both from the point of view of the performance and of the design impact on the engineering constraints. However, from the analysis of the ECCD performance in two references H-mode scenarios at burn (the inductive H-mode and the advanced non-inductive scenario), it was clear that the EC power deposition was not optimal for steady-state applications in the plasma region around mid radius. An optimization study of the equatorial launcher is presented here aiming at removing this limitation of the EC system capabilities. Changing the steering of the equatorial launcher from toroidal to poloidal ensures EC power deposition out to the normalized toroidal radius ????0.6, and nearly doubles the EC driven current around mid radius, without significant performance degradation in the core plasma region. In addition to the improved performance, the proposed design change is able to relax some engineering design constraints on both launchers.

Farina, D.; Figini, L. [Istituto di Fisica del Plasma, Consiglio Nazionale delle Ricerche, EURATOM-ENEA-CNR Association, via Cozzi 53, 20125 Milano (Italy); Henderson, M. [ITER Organization, 13108 Saint-Paul-lez-Durance (France); Saibene, G. [Fusion for Energy, c/Josep Pla 2, Torres Diagonal Litoral-B3, E-08019 Barcelona (Spain)

2014-06-15T23:59:59.000Z

62

Magnetohydrodynamic Shocks in Non-Equatorial Plasma Flows around a Black Hole  

E-Print Network [OSTI]

We study magnetohydrodynamic (MHD) standing shocks in inflowing plasmas in a black hole magnetosphere. Fast and intermediate shock formation is explored in Schwarzschild and Kerr geometry to illustrate general relativistic effects. We find that non-equatorial standing MHD shocks are physically possible, creating a very hot plasma region close to the event horizon. Shocked downstream plasmas can be heated or magnetized depending on the values of various magnetic field-aligned parameters. Then we may expect high-energy thermal/nonthermal emissions from the shocked region. We present the properties of non-equatorial MHD shocks and discuss the shocked plasma region in the black hole magnetosphere. We also investigate the effects of the poloidal magnetic field and the black hole spin on the properties of shocks, and show that both effects can modify the distribution of the shock front and shock strength. We find for strong MHD shock formation that fast rotating magnetic fields are necessary. The physics of non-equatorial MHD shocks in the black hole magnetosphere could be very important when we are to construct the central engine model of various astrophysical phenomena.

Keigo Fukumura; Masaaki Takahashi; Sachiko Tsuruta

2006-11-08T23:59:59.000Z

63

Equatorial symmetry of Boussinesq convective solutions in a rotating spherical shell allowing rotation of the inner and outer spheres  

SciTech Connect (OSTI)

We investigate properties of convective solutions of the Boussinesq thermal convection in a moderately rotating spherical shell allowing the respective rotation of the inner and outer spheres due to the viscous torque of the fluid. The ratio of the inner and outer radii of the spheres, the Prandtl number, and the Taylor number are fixed to 0.4, 1, and 500{sup 2}, respectively. The Rayleigh number is varied from 2.6 × 10{sup 4} to 3.4 × 10{sup 4}. In this parameter range, the behaviours of obtained asymptotic convective solutions are almost similar to those in the system whose inner and outer spheres are restricted to rotate with the same constant angular velocity, although the difference is found in the transition process to chaotic solutions. The convective solution changes from an equatorially symmetric quasi-periodic one to an equatorially symmetric chaotic one, and further to an equatorially asymmetric chaotic one, as the Rayleigh number is increased. This is in contrast to the transition in the system whose inner and outer spheres are assumed to rotate with the same constant angular velocity, where the convective solution changes from an equatorially symmetric quasi-periodic one, to an equatorially asymmetric quasi-periodic one, and to equatorially asymmetric chaotic one. The inner sphere rotates in the retrograde direction on average in the parameter range; however, it sometimes undergoes the prograde rotation when the convective solution becomes chaotic.

Kimura, Keiji; Takehiro, Shin-ichi; Yamada, Michio [Research Institute for Mathematical Sciences, Kyoto University, Kyoto 606-8502 (Japan)

2014-08-15T23:59:59.000Z

64

Freedom of Information and Petroleum Development in the Gulf of Guinea Region| A Comparative Analysis of the Legal Frameworks in Nigeria, Ghana, and Liberia.  

E-Print Network [OSTI]

?? Recent discoveries of oil and natural gas in the Gulf of Guinea have renewed interest in petroleum development in West Africa. This news is… (more)

Calhoun, John Paul

2012-01-01T23:59:59.000Z

65

KINETIC THEORY OF EQUILIBRIUM AXISYMMETRIC COLLISIONLESS PLASMAS IN OFF-EQUATORIAL TORI AROUND COMPACT OBJECTS  

SciTech Connect (OSTI)

The possible occurrence of equilibrium off-equatorial tori in the gravitational and electromagnetic fields of astrophysical compact objects has been recently proved based on non-ideal magnetohydrodynamic theory. These stationary structures can represent plausible candidates for the modeling of coronal plasmas expected to arise in association with accretion disks. However, accretion disk coronae are formed by a highly diluted environment, and so the fluid description may be inappropriate. The question is posed of whether similar off-equatorial solutions can also be determined in the case of collisionless plasmas for which treatment based on kinetic theory, rather than a fluid one, is demanded. In this paper the issue is addressed in the framework of the Vlasov-Maxwell description for non-relativistic, multi-species axisymmetric plasmas subject to an external dominant spherical gravitational and dipolar magnetic field. Equilibrium configurations are investigated and explicit solutions for the species kinetic distribution function are constructed, which are expressed in terms of generalized Maxwellian functions characterized by isotropic temperature and non-uniform fluid fields. The conditions for the existence of off-equatorial tori are investigated. It is proved that these levitating systems are admitted under general conditions when both gravitational and magnetic fields contribute to shaping the spatial profiles of equilibrium plasma fluid fields. Then, specifically, kinetic effects carried by the equilibrium solution are explicitly provided and identified here with diamagnetic energy-correction and electrostatic contributions. It is shown that these kinetic terms characterize the plasma equation of state by introducing non-vanishing deviations from the assumption of thermal pressure.

Cremaschini, Claudio; Ková?, Ji?í; Slaný, Petr; Stuchlík, Zden?k [Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezru?ovo nám.13, CZ-74601 Opava (Czech Republic); Karas, Vladimír [Astronomical Institute, Academy of Sciences, Bo?ní II, CZ-14131 Prague (Czech Republic)

2013-11-01T23:59:59.000Z

66

Seasonal variation of upper tropospheric and lower stratospheric equatorial waves over the tropical Pacific  

SciTech Connect (OSTI)

Upper tropospheric and lower stratospheric wind data spanning 31 years from 1964 to 1994 were analyzed at rawinsonde stations in the central/western Pacific. Traditional spectral and cross-spectral analysis led to the conclusion that there is a significant signal with periods between 3 and 4.5 days, which the authors link with the dominant antisymmetric waves predicted by theory to have these periods, mixed Rossby-gravity waves, and equatorial Rossby waves. Then the authors applied the seasonally varying spectral analysis method developed by Madden to study the average seasonal variation of these waves. The seasonally varying analysis suggested that there are significant twice-yearly maxima in equatorial wave activity throughout the upper troposphere and lower stratosphere, with peaks occurring in late winter-spring and in late summer-fall. The twice-yearly signal was most prominent at the 70-hPa and 100-hPa levels. Similar and consistent results were also shown by an autoregressive cyclic spectral analysis. The cyclic spectral analysis suggested that the frequency characteristics of the v-wind wave power are different during the two maxima at some stations. In addition, the seasonally varying squared coherence between the u and v winds and the associated phase implied that there is horizontal momentum flux associated with these waves and that the sign of the flux is different during the two maxima. The differences in wave characteristics during the maxima periods may be related to different wave modes, seasonal variation of the basic zonal state, or possibly to different equatorial wave forcing mechanisms (i.e., convective versus lateral excitations). 52 refs., 12 figs.

Wikle, C.K.; Tsing-Chang Chen [Iowa State Univ., Ames, IA (United States)] [Iowa State Univ., Ames, IA (United States); Madden, R.A. [National Center for Atmospheric Research, Boulder, CO (United States)] [National Center for Atmospheric Research, Boulder, CO (United States)

1997-07-15T23:59:59.000Z

67

Analysis of Upwelling Changes in the Eastern Equatorial Pacific during El Niño Southern Oscillation  

E-Print Network [OSTI]

ANALYSIS OF UPWELLING CHANGES IN THE EASTERN EQUATORIAL PACIFIC DURING EL NI?O SOUTHERN OSCILLATION A Thesis by CARLOS FERNANDO PERUGACHI SALAMEA Submitted to the Office of Graduate Studies of Texas A&M University in partial... of 1916- 1917, 1917-1918, and 1988-1989, while for weak La Ni?a events the increase of the entrainment velocity is not as strong. The composite figures (Figures 1e and 1f) show that entrainment velocity with units of 10-6 m s-1 for El Ni?o and La Ni...

Perugachi Salamea, Carlos

2012-02-14T23:59:59.000Z

68

Origin of the Springtime Westerly Bias in Equatorial Atlantic Surface Winds in the Community Atmosphere Model Version 3 (CAM3) Simulation  

E-Print Network [OSTI]

­atmosphere interaction generally rules. 1. Introduction Trade winds (easterlies) prevail over most of the tropical in the cen- tral and eastern basins, and vice versa. Along the equa- tor, easterly winds generate equatorialOrigin of the Springtime Westerly Bias in Equatorial Atlantic Surface Winds in the Community

Nigam, Sumant

69

Petrophysical properties of the root zone of sheeted dikes in the ocean crust: A case study from Hole ODP/IODP 1256D, Eastern Equatorial Pacific  

E-Print Network [OSTI]

Program) Site 1256 is located on the Cocos Plate in the Eastern Equatorial Pacific Ocean, in a 15 Ma oldPetrophysical properties of the root zone of sheeted dikes in the ocean crust: A case study from Hole ODP/IODP 1256D, Eastern Equatorial Pacific Marie Violay , Philippe A. Pezard, Benoît Ildefonse

Demouchy, Sylvie

70

Effect of high oleic acid pork on tissue lipids of guinea pigs  

E-Print Network [OSTI]

EFFECT OF HIGH OLEIC ACID PORK ON TISSUE LIP IDS OF GUINEA PIGS A Thesis by TAMMI TINKER FLYNN Submitted to the Office of Graduate Studies of Texas AIIM University in partial fulfillment of the requirements for the degree of MASTER... diets did not change the rate of receptor- mediated hepatic uptake of LDL-cholesterol in hamsters. Anton (36) summarized a number of studies which used rats and rabbits to show that diets rich in oleic acid caused an increase in liver cholesterol...

Flynn, Tammi Tinker

1991-01-01T23:59:59.000Z

71

Auxiliary material for Paper 2011GL047291 The reversal of the multi-decadal trends of the equatorial Pacific easterly  

E-Print Network [OSTI]

Auxiliary material for Paper 2011GL047291 The reversal of the multi-decadal trends and a table that are cited and discussed in the main text of this paper. 1. 2011GL047291-fs01.pdf Scatter plot between equatorial Pacific easterly winds and Indonesian Throughflow transport in AOGCMs. 2. 2011GL047291

Feng, Ming

72

Character of the diatom assemblage spanning a depositional transition in the Eastern Equatorial Pacific Ocean at 6.6 Ma  

E-Print Network [OSTI]

Approximately 6.6 million years ago in the Eastern Equatorial Pacific a large increase in biogenic mass accumulation rates (MAR?s) occurred. This increased level of biogenic mass accumulation persisted until about 4.4 Ma at which time levels...

Brookshire, Brian Neville, Jr.

2005-02-17T23:59:59.000Z

73

Deep-Sea Research I 51 (2004) 12451274 Carbon fluxes through food webs of the eastern equatorial  

E-Print Network [OSTI]

Deep-Sea Research I 51 (2004) 1245­1274 Carbon fluxes through food webs of the eastern equatorial inverse and network analyses to examine food web interactions at 0 , 140 W during EqPac time approach allowed us to trace the pathway of fixed carbon through a representative food web

Jackson, George

74

Mechanisms of air-sea CO2 flux variability in the equatorial Pacific and the North Atlantic  

E-Print Network [OSTI]

Mechanisms of air-sea CO2 flux variability in the equatorial Pacific and the North Atlantic Galen A circulation model is used to estimate the magnitude of interannual variability in air-sea fluxes of CO2 and O2 from 1980­1998 and to examine the controlling mechanisms. The global variability in the air-sea flux

Follows, Mick

75

Effect of equatorial line nodes on the upper critical field and London penetration depth  

SciTech Connect (OSTI)

The upper critical field Hc2 and its anisotropy are calculated for order parameters with line nodes at the equators, kz=0, of the Fermi surface of uniaxial superconductors. It is shown that characteristic features found in Fe-based materials (a nearly linear Hc2(T) in a broad T domain, a low and increasing on warming anisotropy ?H=Hc2,ab/Hc2,c) can be caused by competing effects of the equatorial nodes and of the Fermi surface anisotropy. For certain material parameters, ?H(T)?1 may change sign upon warming, in agreement with the recorded behavior of FeTeS systems. It is also shown that the anisotropy of the penetration depth ??=?c/?ab decreases upon warming to reach ?H at Tc, in agreement with data available. For some materials ??(T) may change upon warming, from ??>1 at low Ts to ??<1 at high Ts.

Kogan, V G [Ames Laboratory; Prozorov, R [Ames Laboratory

2014-09-01T23:59:59.000Z

76

Computational study of atmospheric transfer radiation on an equatorial tropical desert (La Tatacoa, Colombia)  

E-Print Network [OSTI]

Radiative transfer models explain and predict interaction between solar radiation and the different elements present in the atmosphere, which are responsible for energy attenuation. In Colombia there have been neither measurements nor studies of atmospheric components such as gases and aerosols that can cause turbidity and pollution. Therefore satellite images cannot be corrected radiometrically in a proper way. When a suitable atmospheric correction is carried out, loss of information is avoided, which may be useful for discriminating image land cover. In this work a computational model was used to find radiative atmospheric attenuation (300 1000nm wavelength region) on an equatorial tropical desert (La Tatacoa, Colombia) in order to conduct an adequate atmospheric correction.

Delgado-Correal, Camilo; Castaño, Gabriel

2012-01-01T23:59:59.000Z

77

Equatorial spread {ital F} effects on an HF path: Doppler spread, spatial coherence, and frequency coherence  

SciTech Connect (OSTI)

In August 1990 we participated in the Equatorial Ionospheric Studies sounding rocket campaign near Kwajalein Atoll in the equatorial Pacific region. The campaign included measurements of plasma density using rocket probes and coherent and incoherent scatter radar. During the campaign we fielded high-frequency ionospheric sounders over a bistatic path between Maloelap Atoll and Bikini Atoll in the Marshall Islands. The distance between the transmitters and receivers was 700 km; the ionospheric-reflection region was at 10.18; {degree}N, 168.40;{degree}E, near the magnetic equator. We made three types of measurements: Doppler spread and spatial coherence for a single-frequency CW path; frequency coherence of multiple CW paths; and Doppler spread and time-delay spread for a 60-kHz bandwidth path. We obtained such data over a period of 2 weeks for approximately 2 hours each evening; during this period spread {ital F} was common. Fifty percent of the evenings showed Doppler spread of greater than 6 Hz at the {minus}10 dB level (relative to the peak signal power) and greater than 15 Hz at the {minus}30 dB level. Forty percent of the evenings showed spatial coherence distance of less than 180 m in the direction normal to the bistatic path; 40{percent} of the evenings showed spatial coherence of less than 75 m in the direction parallel to the path. Seventy-five percent of the evenings showed coherence bandwidths of less than 1.5 kHz. {copyright} 1999 American Geophysical Union

Fitzgerald, T.J.; Argo, P.E.; Carlos, R.C. [Los Alamos National Laboratory, Los Alamos, New Mexico (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico (United States)

1999-01-01T23:59:59.000Z

78

Complex adenovirus-vectored vaccine protects guinea pigs from three strains of Marburg virus challenges  

SciTech Connect (OSTI)

The Marburg virus (MARV), an African filovirus closely related to the Ebola virus, causes a deadly hemorrhagic fever in humans, with up to 90% mortality. Currently, treatment of disease is only supportive, and no vaccines are available to prevent spread of MARV infections. In order to address this need, we have developed and characterized a novel recombinant vaccine that utilizes a single complex adenovirus-vectored vaccine (cAdVax) to overexpress a MARV glycoprotein (GP) fusion protein derived from the Musoke and Ci67 strains of MARV. Vaccination with the cAdVaxM(fus) vaccine led to efficient production of MARV-specific antibodies in both mice and guinea pigs. Significantly, guinea pigs vaccinated with at least 5 x 10{sup 7} pfu of cAdVaxM(fus) vaccine were 100% protected against lethal challenges by the Musoke, Ci67 and Ravn strains of MARV, making it a vaccine with trivalent protective efficacy. Therefore, the cAdVaxM(fus) vaccine serves as a promising vaccine candidate to prevent and contain multi-strain infections by MARV.

Wang Danher [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Hevey, Michael [Virology Division, United States Army Medical Research Institute of Infectious Diseases (USAMRIID), 1425 Porter Street, Fort Detrick, MD 21702-5011 (United States); Juompan, Laure Y. [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Trubey, Charles M. [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Raja, Nicholas U. [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Deitz, Stephen B. [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Woraratanadharm, Jan [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Luo Min [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Yu Hong [Department of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Ave., BSB 201, Charleston, SC 29403 (United States); Swain, Benjamin M. [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Moore, Kevin M. [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States); Dong, John Y. [Division of Bio-defense Vaccines, GenPhar Inc., 871 Lowcountry Blvd., Mount Pleasant, SC 29464 (United States) and Department of Microbiology and Immunology, Medical University of South Carolina, 173 Ashley Ave., BSB 201, Charleston, SC 29403 (United States)]. E-mail: dongj@genphar.com

2006-09-30T23:59:59.000Z

79

The role of CCL5 (RANTES) in the immune response against Mycobacterium tuberculosis in the guinea pig  

E-Print Network [OSTI]

by the current TB vaccine, Mycobacterium bovis BCG. Recombinant guinea pig (rgp)CCL5 and anti-rgpCCL5 were developed and characterized. The biological activity of rgpCCL5 was determined in a chemotaxis assay using T lymphocytes and pleural exudate cells...

Skwor, Troy Arthur

2005-02-17T23:59:59.000Z

80

GONGED (Geometridae of New Guinea Electronic Database): a progress report on development of an online facility of images  

E-Print Network [OSTI]

of an online facility of images Jeremy D. Holloway, Scott E. Miller, David M. Pollock, Lauren Helgen & Karolyn (Geometridae of New Guinea Electronic Database): a progress report on development of an online facility. The product is expected to be an illustrated atlas of some 1500 species that will in turn be linked to similar

Mathis, Wayne N.

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

The use of daylight in the design of a controlled environment for food production in the Caribbean and other equatorial climates  

E-Print Network [OSTI]

This thesis addresses the use of daylight in the design of a controlled environment for food production in the Caribbean and other Equatorial climates. An expanding population has put a tremendous burden on the food ...

Charles, Curtis B

1989-01-01T23:59:59.000Z

82

Millimeter wave experiment of ITER equatorial EC launcher mock-up  

SciTech Connect (OSTI)

The full-scale mock-up of the equatorial launcher was fabricated in basis of the baseline design to investigate the mm-wave propagation properties of the launcher, the manufacturability, the cooling line management, how to assemble the components and so on. The mock-up consists of one of three mm-wave transmission sets and one of eight waveguide lines can deliver the mm-wave power. The mock-up was connected to the ITER compatible transmission line and the 170GHz gyrotron and the high power experiment was carried out. The measured radiation pattern of the beam at the location of 2.5m away from the EL mock-up shows the successful steering capability of 20°?40°. It was also revealed that the radiated profile at both steering and fixed focusing mirror agreed with the calculation. The result also suggests that some unwanted modes are included in the radiated beam. Transmission of 0.5MW-0.4sec and of 0.12MW-50sec were also demonstrated.

Takahashi, K.; Oda, Y.; Kajiwara, K.; Kobayashi, N.; Isozaki, M.; Sakamoto, K. [Japan Atomic Energy Agency, Naka (Japan); Omori, T.; Henderson, M. [ITER Organization, St. Paul lez Durance (France)

2014-02-12T23:59:59.000Z

83

Measurements of spatial and frequency coherence of an equatorial hf path during spread-F  

SciTech Connect (OSTI)

In August 1990, the authors set up an hf path on the equatorial path between Maloelap Atoll and Bikini Atoll. This path, which had a range of 702 km, reflected in the ionosphere approximately 100 km north of the Altair radar location on Kwajalein. Transmitters at Maloelap broadcasted four cw tones within bandwidth of either 4 kHz, 9 kHz, or 70 kHz to be used to determine frequency coherence and also a phase-coded pseudo random sequence with a bandwidth of 60 kHz (channel probe) to be used to determine time delay spread. A spatial array of antennas was deployed at Bikini to measure spatial and frequency coherence using the cw broadcasts. The system was run in the post-sunset time period over two weeks during which almost every night showed significant degradation due to spread F resulting in rapid fading, decreased spatial and frequency coherence, and increased time delay spread. Doppler spreads of greater than 20 Hz were not uncommon, and the spatial correlation distances and frequency coherence bandwidths became so small (50 meters and 1 kHz respectively) that the experiment had to be readjusted. Measurements taken by the Altair incoherent scatter radar and the CUPRI 50 MHz coherent scatter radar indicate that although the bistatic hf channel is affected by the large scale plume structures, most of the [open quotes]damage[close quotes] is done by the bottomside spread F.

Fitzgerald, T.J.; Argo, P.E.; Carlos, R.C.

1993-01-01T23:59:59.000Z

84

Measurements of spatial and frequency coherence of an equatorial hf path during spread-F  

SciTech Connect (OSTI)

In August 1990, the authors set up an hf path on the equatorial path between Maloelap Atoll and Bikini Atoll. This path, which had a range of 702 km, reflected in the ionosphere approximately 100 km north of the Altair radar location on Kwajalein. Transmitters at Maloelap broadcasted four cw tones within bandwidth of either 4 kHz, 9 kHz, or 70 kHz to be used to determine frequency coherence and also a phase-coded pseudo random sequence with a bandwidth of 60 kHz (channel probe) to be used to determine time delay spread. A spatial array of antennas was deployed at Bikini to measure spatial and frequency coherence using the cw broadcasts. The system was run in the post-sunset time period over two weeks during which almost every night showed significant degradation due to spread F resulting in rapid fading, decreased spatial and frequency coherence, and increased time delay spread. Doppler spreads of greater than 20 Hz were not uncommon, and the spatial correlation distances and frequency coherence bandwidths became so small (50 meters and 1 kHz respectively) that the experiment had to be readjusted. Measurements taken by the Altair incoherent scatter radar and the CUPRI 50 MHz coherent scatter radar indicate that although the bistatic hf channel is affected by the large scale plume structures, most of the {open_quotes}damage{close_quotes} is done by the bottomside spread F.

Fitzgerald, T.J.; Argo, P.E.; Carlos, R.C.

1993-07-01T23:59:59.000Z

85

The effect of polyunsaturated fatty acid peroxidation on cholesterol concentrations in plasma, aorta, liver, and spleen of the guinea pig  

E-Print Network [OSTI]

Biochemistry and Metabolism with Clinical Applications (Linder, M. , ed. ), pp. 33-50, Elsevier Science Publishing Company, Inc. , New York. 20. Stocks, J. & Dormandy, T. (1971) The autoxidation of human red cells lipids induced by 36 hydrogen peroxide...THE EFFECT OF POLYUNSATURATED FATTY ACID PEROXIDATION ON CHOLESTEROL CONCENTRAT IONS IN PLASMA AORTA g LIVER g AND SPLEEN OF THE GUINEA PIG A Thesis by SHEILA MARIE CORRIGAN Submitted to the Graduate College of Texas A&M University...

Corrigan, Sheila Marie

1986-01-01T23:59:59.000Z

86

Simple Magnetic Flux Balance as an Indicator of Neon VIII Doppler Velocity Partitioning in an Equatorial Coronal Hole  

E-Print Network [OSTI]

We present a novel investigation into the relationship between simple estimates of magnetic flux balance and the Ne VIII Doppler velocity partitioning of a large equatorial coronal hole observed by the Solar Ultraviolet Measurements of Emitted Radiation spectrometer (SUMER) on the Solar and Heliospheric Observatory (SOHO) in November 1999. We demonstrate that a considerable fraction of the large scale Doppler velocity pattern in the coronal hole can be qualitatively described by simple measures of the local magnetic field conditions, i.e., the relative unbalance of magnetic polarities and the radial distance required to balance local flux concentrations with those of opposite polarity.

Scott W. McIntosh; Alisdair R. Davey; Scott W. McIntosh

2006-05-22T23:59:59.000Z

87

Equatorial scattering and the structure of the broad-line region in Seyfert nuclei: evidence for a rotating disc  

E-Print Network [OSTI]

We present detailed scattering models confirming that distinctive variations in polarization across the broad Halpha line, which are observed in a significant fraction of Seyfert 1 galaxies, can be understood in terms of a rotating line-emitting disc surrounded by a co-planar scattering region (the equatorial scattering region). The predicted polarization properties are: averaged over wavelength, the position angle of polarization is aligned with the projected disc rotation axis and hence also with the radio source axis; (ii) the polarization PA rotates across the line profile, reaching equal but opposite (relative to the continuum PA) rotations in the blue and red wings; (iii) the degree of polarization peaks in the line wings and passes through a minimum in the line core. We identify 11 objects which exhibit these features to different degrees. In order to reproduce the large amplitude PA rotations observed in some cases, the scattering region must closely surround the emission disc and the latter must itself be a relatively narrow annulus -- presumably the Halpha-emitting zone of a larger accretion disc. Asymmetries in the polarization spectra may be attributable to several possible causes, including bulk radial infall in the equatorial scattering region, or contamination by polar scattered light. The broad Halpha lines do not, in general, exhibit double-peaked profiles, suggesting that a second Halpha-emitting component of the broad-line region is present, in addition to the disc.

J. E. Smith; A. Robinson; S. Young; D. J. Axon; Elizabeth A. Corbett

2005-01-28T23:59:59.000Z

88

Mast cells in citric acid-induced cough of guinea pigs  

SciTech Connect (OSTI)

It was demonstrated previously that mast cells play an important role in citric acid (CA)-induced airway constriction. To investigate the role of mast cells in CA-induced cough, three experiments were carried out in this study. In the first experiment, 59 guinea pigs were employed and we used compound 48/80 to deplete mast cells, cromolyn sodium to stabilize mast cells, MK-886 to inhibit leukotriene synthesis, pyrilamine to antagonize histamine H{sub 1} receptor, methysergide to antagonize serotonin receptor, and indomethacin to inhibit cyclooxygenase. In the second experiment, 56 compound 48/80-pretreated animals were divided into two parts; the first one was used to test the role of exogenous leukotriene (LT) C{sub 4}, while the second one to test the role of exogenous histamine in CA-induced cough. Each animal with one of the above pretreatments was exposed sequentially to saline (baseline) and CA (0.6 M) aerosol, each for 3 min. Then, cough was recorded for 12 min using a barometric body plethysmograph. In the third experiment, the activation of mast cells upon CA inhalation was investigated by determining arterial plasma histamine concentration in 17 animals. Exposure to CA induced a marked increase in cough number. Compound 48/80, cromolyn sodium, MK-886 and pyrilamine, but not indomethacin or methysergide, significantly attenuated CA-induced cough. Injection of LTC{sub 4} or histamine caused a significant increase in CA-induced cough in compound 48/80-pretreated animals. In addition, CA inhalation caused significant increase in plasma histamine concentration, which was blocked by compound 48/80 pretreatment. These results suggest that mast cells play an important role in CA aerosol inhalation-induced cough via perhaps mediators LTs and histamine.

Lai, Y.-L. [Department of Physiology, National Taiwan University College of Medicine, Taipei 100, Taiwan (China)]. E-mail: tiger@ha.mc.ntu.edu.tw; Lin, T.-Y. [Department of Physiology, National Taiwan University College of Medicine, Taipei 100, Taiwan (China)

2005-01-01T23:59:59.000Z

89

Pacific Equatorial Age Transect (PEAT): Summary As the largest ocean, the Pacific is intricately linked to major changes in the global  

E-Print Network [OSTI]

Pacific Equatorial Age Transect (PEAT): Summary As the largest ocean, the Pacific is intricately the Cenozoic the Pacific plate has had a northward component. Thus, the Pacific is unique, in that the thick to drill an age transect ("flow-line") following the position of the paleo- equator in the Pacific

90

Seasonal and interannual variability of ocean color and composition of phytoplankton communities in the North Atlantic, Equatorial Pacific and South Pacific.  

E-Print Network [OSTI]

Seasonal and interannual variability of ocean color and composition of phytoplankton communities in the North Atlantic, Equatorial Pacific and South Pacific. By : Yves Dandonneaua , Pierre-Yves Deschampsb ­ Picoplankton ­ Seasonal variations ­ Variability ­ Oceanic provinces ) Contact : Yves DANDONNEAU LODYC

Paris-Sud XI, Université de

91

Ascorbic acid suppresses endotoxemia and NF-?B signaling cascade in alcoholic liver fibrosis in guinea pigs: A mechanistic approach  

SciTech Connect (OSTI)

Alcohol consumption increases the small intestinal bacterial overgrowth (SIBO) and intestinal permeability of endotoxin. The endotoxin mediated inflammatory signaling plays a major role in alcoholic liver fibrosis. We evaluated the effect of ascorbic acid (AA), silymarin and alcohol abstention on the alcohol induced endotoxemia and NF-?B activation cascade pathway in guinea pigs (Cavia porcellus). Guinea pigs were administered ethanol at a daily dose of 4 g/kg b.wt for 90 days. After 90 days, ethanol administration was stopped. The ethanol treated animals were divided into abstention, silymarin (250 mg/kg b.wt) and AA (250 mg/kg b.wt) supplemented groups and maintained for 30 days. The SIBO, intestinal permeability and endotoxin were significantly increased in the ethanol group. The mRNA expressions of intestinal proteins claudin, occludin and zona occludens-1 were significantly decreased in ethanol group. The mRNA levels of inflammatory receptors, activity of IKK? and the protein expressions of phospho-I?B?, NF-?B, TNF-?, TGF-?{sub 1} and IL-6 were also altered in ethanol group. The expressions of fibrosis markers ?-SMA, ?{sub 1} (I) collagen and sirius red staining in the liver revealed the induction of fibrosis. But the supplementation of AA could induce greater reduction of ethanol induced SIBO, intestinal barrier defects, NF-?B activation and liver fibrosis than silymarin. The possible mechanism may be the inhibitory effect of AA on SIBO, intestinal barrier defect and IKK?, which decreased the activation of NF-?B and synthesis of cytokines. This might have led to suppression of HSCs activation and liver fibrosis. - Highlights: • Alcohol increases intestinal bacterial overgrowth and permeability of endotoxin. • Endotoxin mediated inflammation plays a major role in alcoholic liver fibrosis. • Ascorbic acid reduces endotoxemia, NF-?B activation and proinflammatory cytokines. • AA's action is by inhibition of SIBO, IKK? and alteration of intestinal permeability. • This might have led to suppression of HSCs activation and liver fibrosis.

Abhilash, P.A.; Harikrishnan, R.; Indira, M., E-mail: indiramadambath@gmail.com

2014-01-15T23:59:59.000Z

92

Effects of protein or zinc deficiency on cellular immunity in vaccinated and non-vaccinated guinea pigs with experimentally induced pulmonary listeriosis  

E-Print Network [OSTI]

EFFECTS OF PROTEIN OR ZINC DEFICIENCY ON CELLULAR IMMUNITY IN VACCINATED AND NON-VACCINATED GUINEA PIGS WITH EXPERIMENTALLY INDUCED PULMONARY LISTERIOS I 8 A Thesi s by LEZLEE HELAINE GRAHAM COGHLAN Submitted to the Graduate College of Texas... animals were vaccinated on day 23, and all received aerosol challenge on day 33 and were killed 4 days later. Both zinc and protein deficiency resulted in animals that were clinically abnormal in growth patterns, hematology, ability to mount a delayed...

Coghlan, Lezlee Helaine Graham

1984-01-01T23:59:59.000Z

93

Mutations Abrogating VP35 Interaction with Double-Stranded RNA Render Ebola Virus Avirulent in Guinea Pigs  

SciTech Connect (OSTI)

Ebola virus (EBOV) protein VP35 is a double-stranded RNA (dsRNA) binding inhibitor of host interferon (IFN)-{alpha}/{beta} responses that also functions as a viral polymerase cofactor. Recent structural studies identified key features, including a central basic patch, required for VP35 dsRNA binding activity. To address the functional significance of these VP35 structural features for EBOV replication and pathogenesis, two point mutations, K319A/R322A, that abrogate VP35 dsRNA binding activity and severely impair its suppression of IFN-{alpha}/{beta} production were identified. Solution nuclear magnetic resonance (NMR) spectroscopy and X-ray crystallography reveal minimal structural perturbations in the K319A/R322A VP35 double mutant and suggest that loss of basic charge leads to altered function. Recombinant EBOVs encoding the mutant VP35 exhibit, relative to wild-type VP35 viruses, minimal growth attenuation in IFN-defective Vero cells but severe impairment in IFN-competent cells. In guinea pigs, the VP35 mutant virus revealed a complete loss of virulence. Strikingly, the VP35 mutant virus effectively immunized animals against subsequent wild-type EBOV challenge. These in vivo studies, using recombinant EBOV viruses, combined with the accompanying biochemical and structural analyses directly correlate VP35 dsRNA binding and IFN inhibition functions with viral pathogenesis. Moreover, these studies provide a framework for the development of antivirals targeting this critical EBOV virulence factor.

Prins, Kathleen C.; Delpeut, Sebastien; Leung, Daisy W.; Reynard, Olivier; Volchkova, Valentina A.; Reid, St. Patrick; Ramanan, Parameshwaran; Cárdenas, Washington B.; Amarasinghe, Gaya K.; Volchkov, Viktor E.; Basler, Christopher F. (CNRS-INSERM); (Mount Sinai Hospital); (LB-Ecuador); (Iowa State)

2010-10-11T23:59:59.000Z

94

An investigation of the relationships between rainfall in northeast Brazil and sea surface temperatures of the equatorial regions of the Pacific and Atlantic Oceans  

E-Print Network [OSTI]

;"V IL FEST? GATION OF THE R). LATIONSHIPS BET))'EFN RATNFAI. L IN NOR'I'llL 'EST BRAZIL AND SEA SL'Rl'ACE TFI!PERAT)JRES CF TIIF. Eq?IA'I'ORIA), RFGIONS OF THE PACIFIC AVL' ATLANITIC OCEANS A TI?csiS OV M "u?'v'I N ARTIIL)R COCHRANE Suhrafr...Mcmli c r) / ~g. ember) (Member) May 1977 ABSTRACT An Investigation of the Relationships between Rainfall in Northeast Brazil and Sca Surface Temperatures of the Equatorial Rcgi. ons of the Pacific and Atlantic Oceans (IJay 1977) . Marvin Arthur...

Cochrane, Marvin Arthur

1977-01-01T23:59:59.000Z

95

DECEMBER 1999 3073J O H N S O N A N D M C P H A D E N Interior Pycnocline Flow from the Subtropical to the Equatorial Pacific Ocean*  

E-Print Network [OSTI]

to the Equatorial Pacific Ocean* GREGORY C. JOHNSON AND MICHAEL J. MCPHADEN NOAA/Pacific Marine Environmental and Southern Hemispheres of the Pacific Ocean. In the North Pacific the pycnocline shoals and strengthens dra in the pycnocline of the central North Pacific. This study delineates this pathway and estimates an upper bound

Johnson, Gregory C.

96

Thermo-mechanical analysis of ITER first mirrors and its use for the ITER equatorial visible/infrared wide angle viewing system optical design  

SciTech Connect (OSTI)

ITER first mirrors (FMs), as the first components of most ITER optical diagnostics, will be exposed to high plasma radiation flux and neutron load. To reduce the FMs heating and optical surface deformation induced during ITER operation, the use of relevant materials and cooling system are foreseen. The calculations led on different materials and FMs designs and geometries (100 mm and 200 mm) show that the use of CuCrZr and TZM, and a complex integrated cooling system can limit efficiently the FMs heating and reduce their optical surface deformation under plasma radiation flux and neutron load. These investigations were used to evaluate, for the ITER equatorial port visible/infrared wide angle viewing system, the impact of the FMs properties change during operation on the instrument main optical performances. The results obtained are presented and discussed.

Joanny, M.; Salasca, S.; Dapena, M.; Cantone, B.; Travere, J. M. [CEA, IRFM, F-13108 Saint-Paul-lez-Durance (France); Thellier, C.; Ferme, J. J. [THALES SESO, 13593 Aix-en-Provence Cedex 3 (France); Marot, L. [Department of Physics, University of Basel, 4056 Basel (Switzerland); Buravand, O. [Institut d'Optique Graduate School, 91127 Palaiseau (France); Perrollaz, G. [AMETRA, 13770 Venelles (France); Zeile, C. [INR, KIT, D-76344 Eggenstein-Leopoldshafen (Germany)

2012-10-15T23:59:59.000Z

97

A critical evaluation of the upper ocean heat budget in the Climate Forecast System Reanalysis data for the south central equatorial Pacific  

SciTech Connect (OSTI)

Coupled ocean-atmospheric models suffer from the common bias of a spurious rain belt south of the central equatorial Pacific throughout the year. Observational constraints on key processes responsible for this bias are scarce. The recently available reanalysis from a coupled model system for the National Centers for Environmental Prediction (NCEP) Climate Forecast System Reanalysis (CFSR) data is a potential benchmark for climate models in this region. Its suitability for model evaluation and validation, however, needs to be established. This paper examines the mixed layer heat budget and the ocean surface currents - key factors for the sea surface temperature control in the double Inter-Tropical Convergence Zone in the central Pacific - from 5{sup o}S to 10{sup o}S and 170{sup o}E to 150{sup o}W. Two independent approaches are used. The first approach is through comparison of CFSR data with collocated station observations from field experiments; the second is through the residual analysis of the heat budget of the mixed layer. We show that the CFSR overestimates the net surface flux in this region by 23 W m{sup -2}. The overestimated net surface flux is mainly due to an even larger overestimation of shortwave radiation by 44 W m{sup -2}, which is compensated by a surface latent heat flux overestimated by 14 W m{sup -2}. However, the quality of surface currents and the associated oceanic heat transport in CFSR are not compromised by the surface flux biases, and they agree with the best available estimates. The uncertainties of the observational data from field experiments are also briefly discussed in the present study.

Liu H.; Lin W.; Liu, X.; Zhang, M.

2011-08-26T23:59:59.000Z

98

anopheles arabiensis diptera: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PCR products using the mosquito DNA samples from Equatorial Guinea. The PCR amplification program for Anophelin used Promega?s GoTaq polymerase and a cycle that included 2 minutes...

99

anopheles funestus diptera: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PCR products using the mosquito DNA samples from Equatorial Guinea. The PCR amplification program for Anophelin used Promega?s GoTaq polymerase and a cycle that included 2 minutes...

100

8, 28492862, 2008 Equatorial Kelvin  

E-Print Network [OSTI]

-campaigns in the tropics have been conducted in the recent years with two different LIDAR systems at Paramaribo in Suriname EGU On the basis of observational data obtained in Paramaribo, Suriname we showed recently that cirrus

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Daylight in Guinea-Bissau  

E-Print Network [OSTI]

MYLIGfi Iii GJU£A-BISSAU by HIRAM HALL daylightdaylight of dawning dextrose of my goad the rapidsdreams of~ soul. daylight daylight of my dawning may i wrap

Hall, Hiram

1975-01-01T23:59:59.000Z

102

8) Stratospheric equatorial variability a) Observations  

E-Print Network [OSTI]

speed. Phase lines inclined eastward when altitude increases indicating upward propation Signal field) Westward phase propagation but eastward group propagation Phase lines inclined westward Signal;5 Satellites wind observations (UARS, Swinbak et Ortland 1997) The Quasi-Biennial Oscillation (low stratosphere

Lott, Francois

103

Equatorial hydrology studies by satellite telemetry  

SciTech Connect (OSTI)

We are using a geostationary satellite functioning as a transponder to collect surface environmental data to describe the fate of soil-borne radionuclides. The remote, former atomic testing grounds at the Enewetak and Bikini Atolls present a difficult environment in which to collect continuous field data. Our land-based, solar-powered microprocessor and environmental data systems remotely measure net and total solar radiation, rain, humidity, temperature, and soil-water potentials. For the past year, our water-flux model predicted wet season plant-transpiration rates nearly equal to the 6- to 7-mm/d evaporation-pan rate, which decreases to 2 to 3 mm/d for the dry season. From the microclimate data we estimated a 1:3 and 1:20 /sup 137/Cs dry-matter concentration ratio, which was later confirmed by radioisotopic analysis. This ratio exacerbates the dose to man from intake of food plants. Nephelometer measurements of airborne particulates presently indicate a minimum respiratory radiological dose.

Clegg, B.; Koranda, J.; Robison, W.; Holladay, G.

1980-12-30T23:59:59.000Z

104

Ventilation of the equatorial Atlantic by the equatorial deep jets Peter Brandt,1  

E-Print Network [OSTI]

generation [d'Orgeville et al., 2007]. [3] The vertical oxygen distri long-term moored velocity and oxygen observations, as well as shipboard hydrographic and current sections acquired along 23 W and covering the depth range of the oxygen minimum zones of the eastern

105

Guinea: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:Net Jump Agency/Company

106

Guinea: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:Net Jump Agency/Company(Redirected from ECOWAS

107

Turmoil doesn`t dampen enthusiasm  

SciTech Connect (OSTI)

The paper discusses the outlook for the African gas and oil industries. Though Africa remains politically and economically volatile, its vast energy potential is becoming increasingly attractive to foreign oil and gas companies. Separate evaluations are given for Algeria, Egypt, Nigeria, Angola, Libya, Congo, Gabon, Tunisia, Cameroon, Cote D`Ivoire, and briefly for South Africa, Sudan, Equatorial Guinea, Ghana, Zaire, Benin, Mozambique, Chad, Namibia, Tanzania, Eritrea, Guinea-Bissau, Senegal, Morocco, Sao Tome and Principe, Ethiopia, Niger, Madagascar, Rwanda, Mauritania, Seychelles, Uganda, and Liberia.

NONE

1997-08-01T23:59:59.000Z

108

8) Equatorial waves a)Observations in the low stratosphere  

E-Print Network [OSTI]

speed. Phase lines inclined eastward when altitude increases indicating upward propation Signal End on May 11 #12;Zonal wind Meridional wind a) Observation in the low stratosphere A balloon trip field) Westward phase propagation but eastward group propagation Phase lines inclined westward Signal

Spiga, Aymeric

109

Digital hf radar observations of equatorial spread-F  

SciTech Connect (OSTI)

Modern digital ionosondes, with both direction finding and doppler capabilities can provide large scale pictures of the Spread-F irregularity regions. A morphological framework has been developed that allows interpretation of the hf radar data. A large scale irregularity structure is found to be nightward of the dusk terminator, stationary in the solar reference frame. As the plasma moves through this foehn-wall-like structure it descends, and irregularities may be generated. Localized upwellings, or bubbles, may be produced, and they drift with the background plasma. The spread-F irregularity region is found to be best characterized as a partly cloudy sky, due to the patchiness of the substructures. 13 references, 16 figures.

Argo, P.E.

1984-01-01T23:59:59.000Z

110

Climate regulation of fire emissions and deforestation in equatorial Asia  

E-Print Network [OSTI]

different types of fire, with peat fires emitting up to fourof carbon released from peat and forest fires in IndonesiaM, Wo¨sten H, Page S (2006) PEAT-CO2: assessment of CO2

2008-01-01T23:59:59.000Z

111

Posters Comparison Between General Circulation Model Simulation and Central Equatorial  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006PhotovoltaicSeptember 22, 2014SocietyJ. Dudhia51 Posters A59417361

112

Eastern Equatorial Pacific Ocean Sedimentation: Investigating Constant Flux Proxies  

E-Print Network [OSTI]

for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Franco Marcantonio Committee Members, Mitchell Lyle Debbie Thomas Matthew Schmidt Brent Miller Head of Department, Rick Giardino December 2012 Major Subject: Geology... .......................................................... 74 4.3. Analytical methods .................................................................................................. 77 4.3.1. Uranium and thorium ................................................................................... 77 4...

Singh, Ajay 1980-

2012-12-03T23:59:59.000Z

113

Comparative behavior of plutonium and americium in the equatorial Pacific  

SciTech Connect (OSTI)

Inventories of /sup 239 +240/Pu and /sup 241/Am greatly in excess of global fallout levels persist in the benthic environments of Bikini and Enewetak Atolls. The amount of /sup 239 +240/Pu mobilized to solution at the atolls can be predicted from a distribution coefficient K/sub d/ of 2.3 x 10/sup 5/ and the mean sediment concentrations. The mobilized /sup 239 +240/Pu has solute-like characteristics and different valence states coexist in solution - the largest fraction of the soluble plutonium is in an oxidized form (+V,VI). The adsorption of plutonium to sediments is not completely reversible because of changes that occur in the relative amounts of the mixed oxidation states in solution with time. Characteristics of /sup 239 +240/Pu described at one location may not necessarily describe its behavior elsewhere. The relative amounts of /sup 241/Am to /sup 239 +240/Pu may be altered in future years because of mobilization and radiological decay.

Noshkin, V.E.; Wong, K.M.; Jokela, T.A.; Brunk, J.L.; Eagle, R.J.

1983-01-01T23:59:59.000Z

114

Additional file 4a. References of the African populations compiled in the databases. Country Population  

E-Print Network [OSTI]

] 99 Egypt Arab MT 83 [25] 100 Egypt Arab MT 101 [26] 101 Egypt Arab Y 20 [7] 102 Egypt Berber Siwa MT 78 [27] 103 Egypt Copte MT 9 [25] 104 Egypt Copte MT 101 [27] 105 Egypt Misc. MT 32 [28] 106 Egypt Misc. Y 19 [17] 107 Egypt Misc.Upper Egypt MT 24 [28] 108 Egypt Nubia MT 11 [25] 109 Equatorial Guinea

Paris-Sud XI, Université de

115

Africa: Prosperous times  

SciTech Connect (OSTI)

Political instability and corruption is the rule, rather than the exception, in Africa`s main producing regions, but exploration and production prospects there are bright and attractive to foreign operators. The paper discusses exploration, drilling, resource development, and production in Nigeria, Libya, Algeria, Egypt, Angola, Congo, Gabon, and Tunisia. The other countries of Africa are briefly mentioned, i.e., Cameroon, Cote D`Ivoire, South Africa, Sudan, Namibia, Equatorial Guinea, Eritrea, Zaire, Mozambique, Ghana, Niger, and Seychelles.

NONE

1996-08-01T23:59:59.000Z

116

`Home Away From Home:' Migrant Organizations and Transnational Politics Among Latin American Migrants in Spain  

E-Print Network [OSTI]

, Argentina, Bolivia, Chile, Colombia, Costa Rica, the Dominican Republic, Ecuador, Equatorial Guinea Guatemala, Honduras, Nicaragua, Paraguay, Peru, the Philippines, Portugal, and Uruguay. 3 Although the process of migration has never been... well be the catalyst for national political change, and at the very least may alter the political priorities of governments by focusing their energies abroad (Itzigsohn 2000). 19 In the case of Latin American migrants to Spain, their presence...

Freudenburg, Kevin Michael

2011-04-27T23:59:59.000Z

117

Guinea-Bissau: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a county inAl., It isOpen

118

Guinea-USAID Climate Activities | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:Greer County is a county inAl., It isOpenForestry, Agriculture Topics

119

Papua New Guinea: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth'sOklahoma/GeothermalOrange County is aOrmesaPPTActPapillion-LaVista

120

Papua New Guinea Geothermal Region | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoading map...(UtilityCounty,Orleans County,PPPSolar Jump to:PamukorenPanolaPanton,Paper

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Guinea-Bissau: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place:Net Jump Agency/Company

122

STUDENT HEALTH SERVICES University of Massachusetts Lowell  

E-Print Network [OSTI]

Macedonia-TFYR Palau Suriname Algeria Chad Guinea Madagascar Panama Syrian Arab Republic Angola China Guinea

Massachusetts at Lowell, University of

123

Nighttime Ionospheric D-region: Equatorial and Non-equatorial Neil R. Thomson,1 and Wayne M. McRae2  

E-Print Network [OSTI]

' ~ 85.0 km and sharpness ~ 0.63 km-1. These paths include NPM (Hawaii) to Washington DC, Omega Hawaii Hawaii to Dunedin, and NPM (Hawaii) to Dunedin. It is suggested that the effects of irregularities

Otago, University of

124

Biological control of vertical carbon flux in the California current and Equatorial Pacific  

E-Print Network [OSTI]

carbon to depth (e.g. Bruland and Silver 1981; Landry et al.flux of organic matter to the deep sea (Bruland and Silver1981; Silver and Bruland 1981; Pfannkuche and Lochte 1993).

Stukel, Michael Raymond

2011-01-01T23:59:59.000Z

125

Do biomass burning aerosols intensify drought in equatorial Asia during El Niño?  

E-Print Network [OSTI]

fication of drought-induced biomass burning in Indonesiavariability in global biomass burning emissions from 1997 toChemistry and Physics Do biomass burning aerosols intensify

Tosca, M. G; Randerson, J. T; Zender, C. S; Flanner, M. G; Rasch, P. J

2010-01-01T23:59:59.000Z

126

Biological control of vertical carbon flux in the California current and Equatorial Pacific  

E-Print Network [OSTI]

and show that fecal pellet production could account for thethat lead to fecal pellet production of metazooplankton.leading to fecal pellet production by mesozooplankton.

Stukel, Michael Raymond

2011-01-01T23:59:59.000Z

127

Tracking El Nio using optical indices of phytoplankton dynamics in the equatorial Pacific  

E-Print Network [OSTI]

Pacific's normally deep thermocline to shoal. Subsequently, the tongue of cold water normally extending Atmosphere Ocean (TAO) project array of around 70 buoys tracing meridians from 156E to 95W between 8N and 8S, backscattering meter and C-star beam attenuation meter (proxies for chlorophyll, particulate organic carbon

Kurapov, Alexander

128

POTENTIAL VORTICITY AND ENERGY ASPECTS OF THE MJO THROUGH EQUATORIAL WAVE THEORY  

E-Print Network [OSTI]

and streamfunction is used to formulate an invertibility principle. The balanced wind and mass fields recovered from this result demonstrates the MJO wake response can be described by simple PV dynamics, it also illustrates

Schubert, Wayne H.

129

Sensitivity of population smoke exposure to fire locations in Equatorial Asia1 Patrick S. Kim1,*  

E-Print Network [OSTI]

-Chem chemical transport model to show that population exposure to the smoke is35 highly dependent on where smoke concentration of 300 µg m-3 in66 Singapore, far exceeding the 25 µg m-3 air quality guideline

Mickley, Loretta J.

130

Depth and controls of Ca-rhodochrosite precipitation in bioturbated sediments of the Eastern Equatorial Pacific,  

E-Print Network [OSTI]

Depth and controls of Ca-rhodochrosite precipitation in bioturbated sediments of the Eastern Road, Moss Landing, CA 95039-9647, USA ABSTRACT The occurrence of early diagenetic Ca-rhodochrosite [(Mn,Ca)CO3] is reported in association with `griotte'-type nodular limestones from basinal settings

Gilli, Adrian

131

E-Print Network 3.0 - african equatorial rain Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

, and K. Walker Painemilla, editors. Hunting and Bushmeat Utilization in the African rain forest... , and the transformation of resource use in Central ... Source: Hardin, Rebecca...

132

From the subtropics to the central equatorial Pacific Ocean: Neodymium isotopic composition and rare earth element  

E-Print Network [OSTI]

and rare earth element concentration variations Mélanie Grenier,1 Catherine Jeandel,1 François Lacan,1 compositions (eNd) and rare earth element (REE) concentrations were measured for filtered surface to deep composition and rare earth element concentration variations, J. Geophys. Res. Oceans, 118, 592­618, doi:10

Boyer, Edmond

133

Paleoceanographic interpretations of the Pleistocene sediments from the Eastern Equatorial Pacific-ODP Hole 677B  

E-Print Network [OSTI]

records of Hole 677B. 3 'se ~ 0 , O I 303 $3 I t I GALAPAGOS f I ~ 8) 4. Ctssss rises Riis sos aces 504 ZONE P i=s= 1 =. O ees e s Ace I \\ s * ss e s ee s ~ 4 Figure 1. Location of ODP Site B77 in Ihe Panama Basin, south... and Klitgord, 1978). 86'W 84'W 82'W 80 W 78'W g V' * '"a 8'N i II . III V 6'N c c~~ 63 Z IS tt I O 'o III al ? -- NI Costa Rica Rift' , 504. 677 bo Ii ( e II 0 4'N 2'N Galpoaaos Rtft, ne . ?o ?. - fj' o go r ~C, % . 6 0' 2'S...

Lin, Yee-Hwa

1990-01-01T23:59:59.000Z

134

Synoptic disturbances found in precipitable water fields north of equatorial Africa  

E-Print Network [OSTI]

. Six case wind field composite analysis is accomplished with both actual winds and reduced shear winds (zonal mean removed at each latitude band). Case study analysis revealed a doppler shifted propagating Rossby Wave (k = 6, c =-5 m/sec) at 500h...

Patla, Jason Eddy

1998-01-01T23:59:59.000Z

135

Structure and variances of equatorial zonal circulation in a multimodel ensemble  

E-Print Network [OSTI]

. Zwiers · G. J. Boer · M. F. Ting Received: 16 August 2011 / Accepted: 16 April 2012 � Her Majesty Consortium, University of Victoria, Victoria, BC, Canada G. J. Boer Canadian Centre for Climate Modeling and Analysis, Climate Research Division, Environment Canada, Victoria, BC, Canada M. F. Ting Lamont

136

Turbulence and internal waves in numerical models of the equatorial undercurrents system  

E-Print Network [OSTI]

3805. Caulfield, C. P. & Peltier, W. R. 2000 The anatomy of1055. Sutherland, B. R. & Peltier, W. 1992 The stability ofSan Diego USA. Caulfield, C. P. & Peltier, W. R. 1994 Three

Pham, Hieu T.

2010-01-01T23:59:59.000Z

137

Pit distribution in the equatorial region of Titan Kimberly A. Adams n  

E-Print Network [OSTI]

distribution and size to characterize these features and understand their formation. Chi-square analysis. However, analysis of the densest cluster of pits, a group of 50, shows a more random distribution. Fractal analysis and comparison with a same-sized random set find only a hint of linearity. A Poisson distribution

Jurdy, Donna M.

138

Rotational effects in thermonuclear Type I Bursts: equatorial crossing and directionality of flame spreading  

E-Print Network [OSTI]

In a previous study on thermonuclear (Type I) Bursts on accreting neutron stars we addressed and demonstrated the importance of the effects of rotation, through the Coriolis force, on the propagation of the burning flame. However, that study only analysed cases of longitudinal propagation, where the Coriolis force coefficient $2\\Omega\\cos\\theta$ was constant. In this paper, we study the effects of rotation on propagation in the meridional (latitudinal) direction, where the Coriolis force changes from its maximum at the poles to zero at the equator. We find that the zero Coriolis force at the equator, while affecting the structure of the flame, does not prevent its propagation from one hemisphere to another. We also observe structural differences between the flame propagating towards the equator and that propagating towards the pole, the second being faster. In the light of the recent discovery of the low spin frequency of burster IGR~J17480-2446 rotating at 11 Hz (for which Coriolis effects should be negligib...

Cavecchi, Yuri; Levin, Yuri; Braithwaite, Jonathan

2014-01-01T23:59:59.000Z

139

An investigation of the oceanic effects on the climate of Pacific Equatorial South America  

E-Print Network [OSTI]

'C!il (lf. '. E 11 (. '. (l'31 f( (111 'I j 1 (110 CC(EC, t mperatures in Australia. The increasing in- fluence of subsidence from the w stwa d-moving south ?acif 'c high cou' d quite possibly cause 1. ss rain to fall in the western Pacific...

Cook, James Dean

2012-06-07T23:59:59.000Z

140

Influence of Midlatitude Winds on the Stratification of the Equatorial Thermocline* MASAMI NONAKA  

E-Print Network [OSTI]

, Ekman pumping, and entrainment in the subpolar ocean are examined. The effects of a "sponge layer" adjacent to the northern boundary of the basin are also assessed. Solutions are forced by idealized zonal winds with strong or weak midlatitude westerlies, and they are found in rectangular basins that extend

Xie, Shang-Ping

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

The seasonal variation of the zonal velocity of the Atlantic Equatorial Undercurrent  

E-Print Network [OSTI]

measurements and. the possibility of considerable nonseasonal variation. The zonal current speed. at, the sea surface near the equator 0 0 east of 35 -30 W appears to have maximums in February-Nay and September-Octo'her and minimums in June... ~ ~ 22 23 'I 25 26 27 at at 30 31 e ~ 34 m/s ~ ~ ~ 35 37 Depth of the core (m) 0 cm/s isotach depth directly above the coze (m) 20 cm/s isotaoh depth directly below the core (m) 0 cm/s isotach depth diz'ectly below the core (m) Thickness...

Olling, Charles Randolph

1977-01-01T23:59:59.000Z

142

Equatorial Pacific Sediment Deposition during the Early to Middle Miocene: Carbon Cycling and Proxies for Productivity  

E-Print Network [OSTI]

trough [Shipboard Scientific Party, Init. Repts. DSDP 574, 1985]. Four holes were cored: Hole 574 cored from 0 ? 206.5 mbsf, Hole 574A cored from 0 - 180.2 m in length (100% recovery) and Hole 574C cored from 194.5 to 525.5 mbsf (58% recovery); Hole B... recovered only 9.5 m of core. Sediments from both Holes A and C are dominantly calcareous ooze. Siliceous microfossils are a typical component (2-30%, 7 Table 1) and make up the majority of the non-carbonate sediment fraction [Mayer et al., 1986...

Piela, Christine Marie

2012-02-14T23:59:59.000Z

143

Oil and gas developments in central and southern Africa in 1987  

SciTech Connect (OSTI)

Significant rightholding changes took place in central and southern Africa during 1987. Angola, Benin, Congo, Gabon, Ghana, Guinea, Guinea Bissau, Mauritania, Seychelles, Somali Republic, Tanzania, Zaire, and Zambia announced awards or acreage open for bidding. Decreases in exploratory rightholdings occurred in Cameroon, Congo, Cote d'Ivoire, Equatorial Guinea, Gabon, Kenya, Namibia, South Africa, and Tanzania. More wells and greater footage were drilled in 1987 than in 1986. Total wells increased by 18% as 254 wells were completed compared to 217 in 1986. Footage drilled during the year increased by 46% as about 1.9 million ft were drilled compared to about 1.3 million ft in 1986. The success rate for exploration wells in 1987 improved slightly to 36% compared to 34% in 1986. Significant discoveries were made in Nigeria, Angola, Congo, and Gabon. Seismic acquisition in 1987 was the major geophysical activity during the year. Total oil production in 1987 was 773 million bbl (about 2.1 million b/d), a decrease of 7%. The decrease is mostly due to a 14% drop in Nigerian production, which comprises 60% of total regional production. The production share of OPEC countries (Nigeria and Gabon) versus non-OPEC countries of 67% remained unchanged from 1986. 24 figs., 5 tabs.

Hartman, J.B.; Walker, T.L.

1988-10-01T23:59:59.000Z

144

Tropical Africa: Land Use, Biomass, and Carbon Estimates for 1980 (NDP-055)  

SciTech Connect (OSTI)

This document describes the contents of a digital database containing maximum potential aboveground biomass, land use, and estimated biomass and carbon data for 1980. The biomass data and carbon estimates are associated with woody vegetation in Tropical Africa. These data were collected to reduce the uncertainty associated with estimating historical releases of carbon from land use change. Tropical Africa is defined here as encompassing 22.7 x 10{sup 6} km{sup 2} of the earth's land surface and is comprised of countries that are located in tropical Africa (Angola, Botswana, Burundi, Cameroon, Cape Verde, Central African Republic, Chad, Congo, Benin, Equatorial Guinea, Ethiopia, Djibouti, Gabon, Gambia, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Madagascar, Malawi, Mali, Mauritania, Mozambique, Namibia, Niger, Nigeria, Guinea-Bissau, Zimbabwe (Rhodesia), Rwanda, Senegal, Sierra Leone, Somalia, Sudan, Tanzania, Togo, Uganda, Burkina Faso (Upper Volta), Zaire, and Zambia). The database was developed using the GRID module in the ARC/INFO{trademark} geographic information system. Source data were obtained from the Food and Agriculture Organization (FAO), the U.S. National Geophysical Data Center, and a limited number of biomass-carbon density case studies. These data were used to derive the maximum potential and actual (ca. 1980) aboveground biomass values at regional and country levels. The land-use data provided were derived from a vegetation map originally produced for the FAO by the International Institute of Vegetation Mapping, Toulouse, France.

Brown, S.

2002-04-16T23:59:59.000Z

145

The growth of New Guinea impatiens with controlled-release fertilizer in a recirculating subirrigation system  

E-Print Network [OSTI]

With concerns increasing over the supply and quality of water, pressure on greenhouse growers to use water and fertilizers more efficiently is also increasing. Controlled-release fertilizers (CRF) and recirculating subordination systems...

Richards, Daphne Ladean

1999-01-01T23:59:59.000Z

146

A Quest for Insularity: Thomas Forrest's _Voyage to New Guinea, and the Moluccas_  

E-Print Network [OSTI]

the fall of 1773, Samuel Johnson and James Boswell recordedto the Hebrides with Samuel Johnson, LL.D. (1785) reproduceLondon: Verso, 2007. Johnson, Samuel, and James Boswell. A

Lorlertratna, Panida

2012-01-01T23:59:59.000Z

147

Growth of New Guinea impatiens under no-leach drip irrigation  

E-Print Network [OSTI]

of the same fertility rate. In post-production studies following both experiments, all plants continued to grow and flower. In a third experiment, plants were grown under a no leach irrigation regime and the 12-3-4 fertility rate with six different media (peat...

Pannkuk, Timothy Richard

1995-01-01T23:59:59.000Z

148

Rabbit response to intravenously injected chicken and guinea pig gamma globulins  

E-Print Network [OSTI]

to obtain antisera for each gamma globulin. The injection material consisted of individual alum precipitated fluids prepared by mixing a 3. 0/ solution of the respec- tive gamma globulins and a 1% alum solution (KA1(SO4)2 ' 12H20) in a 1:1 ratio... and flocculating with a 0. 1N NaOH solution. One intravenous injection per day of the alum precipitated protein was given every other day for a total of three injections (the first injection was 1 ml. , the second 1. 5 ml. and the third 2. 0 ml. ). The animals...

Butler, Thomas Milton

1968-01-01T23:59:59.000Z

149

Recognition and Strangeness in Marine Environmental Encounters on New Guinea's Far Western Coast /  

E-Print Network [OSTI]

5; Boellstorff 2002:29; Graeber 2001:45). My examination ofen Volkenkunde 150:23-145. Graeber, David 2001 Toward an

Parker, Ian Nicholas

2013-01-01T23:59:59.000Z

150

Studies on the immunosuppressive effects of alpha globulins obtained from guinea pig serum  

E-Print Network [OSTI]

as to monitor changes in alpha globulin levels and antibody production. At 2 days of sensitization u-globulins were elevated and lymphocyte responses to antigen induced 8-thymidine incorporation were suppressed. 3 iv With development of immunity on day 4..., alpha globulin levels were elevated, and remained so until day 10. Antibody wss detected on day 4 snd gradually rose in titer until day 10. ACKNOWLEDGMENTS I would like to express my appreciation to my committee members, Dr. G. A. O'Donovan and Dr...

Cowart, Richard Elmer

2012-06-07T23:59:59.000Z

151

A Quest for Insularity: Thomas Forrest's _Voyage to New Guinea, and the Moluccas_  

E-Print Network [OSTI]

Stevenson, Robert Louis. Treasure Island. Ed. Wendy R. Katz.Louis Stevenson’s Treasure Island (1883). Ironically, thebeen marooned on the Treasure Island for years, is found on

Lorlertratna, Panida

2012-01-01T23:59:59.000Z

152

Papua New Guinea-Lowering Emissions in Asia's Forests (LEAF) | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories onFocusOski Energy LLC Place:FerrySprings,Panda

153

Recognition and Strangeness in Marine Environmental Encounters on New Guinea's Far Western Coast /  

E-Print Network [OSTI]

Raja Ampat) [Impact of Ecotourism Development on Social andin Local Communities (Marine Ecotourism Case Study, Mansuarinteraction to enter into ecotourism discussions suggests

Parker, Ian Nicholas

2013-01-01T23:59:59.000Z

154

Characterization of guinea pig transfer factor collected by In vivo exposure to antilymphocyte gamma globulin  

E-Print Network [OSTI]

Abbreviations used in this thesis; DNCB, 2, 4-dinitrochloro- benzene; KLH, keyhole limpet hemocyanin; DNFBp 2p4-dinitroflouro- benzene; DS, double stranded; SS, single stranded; BCG, Bacille Calmette-Guerin; PPD, purified protein derivative; ALS, anti..., 8, 10, 36-39), diphtheria toxoid (11), coccidioidin (13, 40-42), histoplasmin (13, 41, 42), keyhole limpet hemocyanin (KLH) (38), Candida antigens (14), bacterial spores (40, 41. , , modified serum components (44), mumps virus, leprosy bacillus...

Stewart, Robert Stanley

1976-01-01T23:59:59.000Z

155

Papua New Guinea-ClimateWorks Low Carbon Growth Planning Support | Open  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth'sOklahoma/GeothermalOrange County is aOrmesaPPTActPapillion-LaVista South

156

Papua New Guinea-Low Emissions Asian Development (LEAD) Program | Open  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth'sOklahoma/GeothermalOrange County is aOrmesaPPTActPapillion-LaVista SouthEnergy

157

Papua New Guinea Improved Energy Access for Rural Communities | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoading map...(UtilityCounty,Orleans County,PPPSolar Jump

158

Papua New Guinea-Pilot Program for Climate Resilience (PPCR) | Open Energy  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoading map...(UtilityCounty,Orleans County,PPPSolar JumpInformation Pilot Program for

159

20 My of nitrogen fixation during deposition of mid-Cretaceous black shales on the Demerara Rise, equatorial Atlantic Ocean  

E-Print Network [OSTI]

Drilling Pro- gram (ODP) Leg 207 on the Demerara Rise offshore of Surinam is up to 90 m in thickness

Gilli, Adrian

160

Mon. Not. R. Astron. Soc. 315, 2123 (2000) More redshifts of powerful equatorial radio sources from the  

E-Print Network [OSTI]

Ã?r extraterrestrische Physik, PO Box 1603, 87450 Garching, Germany Accepted 1999 December 16. Received 1999 November 10 of these remaining four objects, 14132215, 18592235 and 19532077 (3C 404). In Section 2, details of the observations and data reduction are provided. The reduced spectra are presented and discussed in Section 3. The reader

Best, Philip

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

The Assessment and Calibration of Ensemble Seasonal Forecasts of Equatorial Pacific Ocean Temperature and the Predictability of Uncertainty  

E-Print Network [OSTI]

We evaluate the performance of two 44 year ensemble seasonal hindcast time series for the Nino3 index produced as part of the DEMETER project. We show that the ensemble mean carries useful information out to six months. The ensemble spread, however, only carries useful information out to four months in one of the models, and two months in the other.

Jewson, S; Hagedorn, Rolf; Jewson, Stephen; Doblas-Reyes, Francisco; Hagedorn, Renate

2003-01-01T23:59:59.000Z

162

Micro-phytoplankton variability at the equatorial Pacific (140W?) during the JGOFS EQPAC Time Series Studies 1992  

E-Print Network [OSTI]

Micro-phytoplankton (>20 gm cell size) was sampled in the upper 200 m of the water column at the Pacific equator, 140'W, during two JGOFS EqPac Time Series Studies, in order to determine the changes in the micro-phytoplanlcton assemblage between...

Iriarte, Jose Luis

1994-01-01T23:59:59.000Z

163

Data Report: Oligocene Paleoceanography of the Equatorial Pacific Ocean: Planktonic and Benthic Foraminifer Stable Isotope Results from Site 1218  

E-Print Network [OSTI]

in the Southern Hemisphere. We investigate the Oligocene climate, using 54- m-long high-resolution benthic and planktonic foraminifer stable iso- tope records from Ocean Drilling Program (ODP) Site 1218. Site 1218 (8?53.38?N, 135?22.00?W) is located... T2. Benthic foraminifer stable iso- tope data, p. 10. F3. Fine-fraction bulk isotopic analyses, p. 8. 1.0 1.2 1.4 1.6 1.8 2.0 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 ?13C (?) ?18O (?) Depth (rmcd) 146 147 148 149 150 151 152 153 154 155 C9n C9r Bulk...

Wade, Bridget, S.; P??like, Heiko

2005-01-01T23:59:59.000Z

164

Data report: Oligocene paleoceanography of the equatorial Pacific Ocean: planktonic and benthic stable isotope results from Site 1218  

E-Print Network [OSTI]

in the Southern Hemisphere. We investigate the Oligocene climate, using 54- m-long high-resolution benthic and planktonic foraminifer stable iso- tope records from Ocean Drilling Program (ODP) Site 1218. Site 1218 (8?53.38?N, 135?22.00?W) is located... T2. Benthic foraminifer stable iso- tope data, p. 10. F3. Fine-fraction bulk isotopic analyses, p. 8. 1.0 1.2 1.4 1.6 1.8 2.0 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 ?13C (?) ?18O (?) Depth (rmcd) 146 147 148 149 150 151 152 153 154 155 C9n C9r Bulk...

Wade, Bridget S.; P??like, Heiko

2005-01-01T23:59:59.000Z

165

than the equatorial bond. We also note a change in the pressure evolution of the shortest OO  

E-Print Network [OSTI]

­O distance above the transition pressure (Fig. 5B). In the CaCl2 structure, the compression occurs without in stishovite and CaCl2 forms of SiO2 (Table 3). Our results are compatible with an integrated octahedral vol- ume variation of about 1% between stishovite and CaCl2-type SiO2 above the transition pres- sure (this

Dove, Patricia M.

166

Variability of ozone in the marine boundary layer of the equatorial Pacific Ocean1 Xiao-Ming Hu1  

E-Print Network [OSTI]

marine boundary layer of the Kwajalein Atoll, Republic of the Marshall Islands (latitude 8o 43'3 N al., 2000; Horowitz et al., 2003; Yang et13 al., 2005; von Glasow, 2008). Due to logistical

Thompson, Anne

167

Response and impact of equatorial ocean dynamics and tropical instability waves in the tropical Atlantic under global warming  

E-Print Network [OSTI]

Atlantic under global warming: A regional coupled downscaling study Hyodae Seo1,2 and ShangPing Xie1. Under global warming, both global and regional models exhibit an increased (decreased) rainfall thermal stratification is suggested to be more important under global warming. The strengthened upwelling

Xie, Shang-Ping

168

Off-equatorial chorus occurrence and wave amplitude distributions as observed by the Polar Plasma Wave Instrument  

E-Print Network [OSTI]

by competition among a host of accel- eration and loss processes [Shprits et al., 2008a, 2008b], and the relative contribution of individual processes is not fully understood. The role of wave-particle interactions involving

169

The effects of protein deprivation on alveolar immunity in BCG-vaccinated and non-vaccinated guinea pigs  

E-Print Network [OSTI]

Il OOH'IHOI Ie ~ I 52 CHOW Ie I) . 11140 j$ . 110ee . 10041 ONOO 04040 2 4 WEEKS POST CNALLENCE Figure 15. Ef'feet of' Diet on Rate of' Phagocytosis 36 oaa LEOEHO EKI v~ R HHO-vaoo . aaaa '? . aaa ~ , Oooo 2 4 WEEKS POST CHALLENGE...

Kimball, Milton Scott

1984-01-01T23:59:59.000Z

170

An agent-based approach to HIV/AIDS epidemic modeling : a case study of Papua New Guinea  

E-Print Network [OSTI]

Since AIDS was first discovered, mathematical models of the transmission dynamics of HIV have been developed to determine the drivers of the epidemic. It has become apparent that the most profound factor in the proliferation ...

Rhee, Alisa Joy

2006-01-01T23:59:59.000Z

171

Inhibition of citric acid- and capsaicin-induced cough by novel TRPV-1 antagonist, V112220, in guinea-pig  

E-Print Network [OSTI]

This is an Open Access article distributed under the terms of the Creative Commons Attribution License

Sum Yee Leung; Akio Niimi; Alison S Williams; Puneeta Nath; Xavier Blanc; Q Thai Dinh; K Fan; Chung Open Access

2007-01-01T23:59:59.000Z

172

Acoustical and flow characteristics of a cough as an index of pulmonary function in the guinea pig.  

E-Print Network [OSTI]

??Human studies have shown that cough sound and flow analysis may be useful for diagnosing pulmonary abnormalities. The purpose of this study was to evaluate… (more)

Day, Joshua W.

2004-01-01T23:59:59.000Z

173

E-Print Network 3.0 - algeria cuba indonesia Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Guinea Guinea Bissau Guyana Haiti Afghanistan Albania Algeria Andorra Romania Russia Rwanda Samoa... Honduras Hungary Iceland India Indonesia Angola Antigua Argentina...

174

E-Print Network 3.0 - algeria bangladesh egypt Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Guinea Guinea Bissau Guyana Haiti Afghanistan Albania Algeria Andorra Romania Russia Rwanda Samoa... Sinapore Slovakia Jamaica Japan Jordan Kazakstan Kenya Bangladesh...

175

E-Print Network 3.0 - algeria bangladesh cuba Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Guinea Guinea Bissau Guyana Haiti Afghanistan Albania Algeria Andorra Romania Russia Rwanda Samoa... Sinapore Slovakia Jamaica Japan Jordan Kazakstan Kenya Bangladesh...

176

E-Print Network 3.0 - algeria australia austria Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Guinea Guinea Bissau Guyana Haiti Afghanistan Albania Algeria Andorra Romania Russia Rwanda Samoa Source: Alechina, Natasha - School of Computer Science, University of...

177

Subscribe to daily environment news  

E-Print Network [OSTI]

: Strong Quake Strikes Papua New Guinea, No Damage BELGIUM: Airlines, US Cool to EU Emissions Trading

McGraw, Kevin J.

178

Im Rahmen der Vorlesung Bank-und Kapitalmarktrecht veranstaltet der Lehrstuhl fr  

E-Print Network [OSTI]

Papua New Guinea Saudi Arabia Singapore Spain Sweden United Arab Emirates United Kingdom United States

Schubart, Christoph

179

. 16 (9. ).  

E-Print Network [OSTI]

, Palau, Papua New Guinea, Philippines, Puerto Rico, Rwanda, Samoa, Sierra Leone, Singapore, South Africa

180

Environment and Development http://journals.cambridge.org/EDE  

E-Print Network [OSTI]

, Mauritius, Montser- rat, Nauru, Netherlands Antilles, New Caledonia, Niue, Palau, Papua New Guinea, Puerto

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

The 1996 U.S. Purse Seine Fishery for Tropical Tunas in the Central-Western Pacific Ocean  

E-Print Network [OSTI]

, Kiribati, Marshall Islands, Nauru, New Zealand, Niue, Palau, Papua New Guinea, Solomon Islands, Tonga

182

3. (2) ---(TOEFL ITP)  

E-Print Network [OSTI]

, Mauritius, Namibia, Nauru, New Zealand, Nigeria, Pakistan, Palau, Papua New Guinea, Philippines, Puerto Rico

183

Heterogeneity and Depositional Variability of Reef Sand Aprons: Integrated Field and Modeling of the Dynamics of Holocene Aranuka Atoll, Republic of Kiribati, Equatorial Pacific  

E-Print Network [OSTI]

Depositional facies represent the net product of a complex set of processes that impact sediment supply and transport through geomorphic systems. Although the general facies motifs of many isolated platforms throughout the ...

Wasserman, Hannah

2013-08-31T23:59:59.000Z

184

The distribution of particulate matter in the Equatorial and Subtropical South Atlantic Ocean: evidence for sources, transport and sinks of particles  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Advection and Resuspension Associated with Boundaries. . . . . . . . . . . 71 The Brazil Basin. . 71 The Angola Basin. 74 Particulate Matter Associated with the Oxygen Minimum. . . . . . . . . . . 76 Agreement with Previous Work. . . 80... include primary production, aggregation, dissolution, diffusion, gravitational settling, upwelling, boundary layer mixing, and the resuspension and advection of sediments. For many elements involved in biogeochemical cycles, particulate matter serves...

Berglund, Bret Lawrence

1989-01-01T23:59:59.000Z

185

Nanoplankton contributions to phytoplankton standing crop and primary productivity in the central equatorial Pacific (Sept./Oct. 1975; Feb./Mar. 1976)  

E-Print Network [OSTI]

102 103 110 110 113 128 128 135 135 139 149 186 ?07 LIST OF TABLES Table Page Minimum, maximum, mean, standard deviation, and number of observations for surface and integrated chlorophyll a by transect, during 1975 cruise . 66... Minimum, maximum, mean, standard deviation, and number of observations for surface and integrated chlorophyll a by transect, during 1976 cruise . 67 Average percent contribution and standard deviation oi' nanoplankton chlorophyll a to total...

Stockwell, Dean Alan

1982-01-01T23:59:59.000Z

186

Propagation speed of sound assessment in the layers of the guinea-pig esophagus in vitro by means of acoustic microscopy  

E-Print Network [OSTI]

Clinical Research, Skejby Hospital, Section SKS, Denmark b Center for Sensory-Motor Interaction, Aalborg:001 and in mucosa to 1584 (1566±1603) m/s p

Illinois at Urbana-Champaign, University of

187

The Importance of Wellness Examinations for Your Exotic Pet Birds, reptiles, and small pet mammals, such as ferrets, rabbits, guinea pigs, chinchillas, rodents,  

E-Print Network [OSTI]

The Importance of Wellness Examinations for Your Exotic Pet Birds, reptiles, and small pet mammals the health of the animal. Many of these exotic pets have specific nutritional or environmental requirements that many pet owners do not provide. They are unable to provide these needs either because they are simply

188

L. monocytogenes in Guinea Pig Placenta JID 2005:191 (1 June) 1889 M A J O R A R T I C L E  

E-Print Network [OSTI]

on Microbial Toxins and Path- ogenicity, Andover, New Hampshire, 18­23 July 2004; 42nd annual meeting and Cell Biology and 2 School of Public Health, University of California, Berkeley, and 3 Anatomic Pathology Service, Veterinary Medical Teaching Hospital, University of California, Davis Listeria

Bakardjiev, Anna

189

DECIPHERING THE EVOLUTIONARY HISTORY OF THE MONTANE NEW GUINEA AVIFAUNA: COMPARATIVE PHYLOGEOGRAPHY AND INSIGHTS FROM PALEODISTRIBUTIONAL MODELING IN A DYNAMIC LANDSCAPE  

E-Print Network [OSTI]

Integrating comparative phylogeographic methods with taxon-specific paleodistributional modeling provides a powerful approach for assessing historical environmental factors that have contributed to patterns of population ...

Benz, Brett W.

2011-12-31T23:59:59.000Z

190

THE ECONOMIC IMPACT OF TOURISM IN SPTO MEMBER COUNTRIES  

E-Print Network [OSTI]

......................................................................................................................... 4 2. Methodology Caledonia, Kiribati, Niue, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu and Vanuatu. The economic

191

Mjliga samarbetslnder inom Minor Field Studies Afghanistan  

E-Print Network [OSTI]

Nordkorea, Dem. Rep. Pakistan Palau Palestinska självstyret Panama Papua New Guinea Paraguay Peru Rwanda

192

THE ROLES OF PRIOR RESIDENCE AND RELATIVE SIZE IN COMPETITION FOR  

E-Print Network [OSTI]

to Papua, New Guinea, and Palau (Johnson 1960; McVey 1975). Usually it is found in fresh and brackish

193

A Review of the South Pacific Tuna Baitfisheries: Small Pelagic  

E-Print Network [OSTI]

at Palau in the Western Caroline Islands (Muller, 1976;Wilson, 1977)and in Papua New Guinea (PNG) (Lewis et

194

South American Lowland moist Southern Cone societies  

E-Print Network [OSTI]

-FOODS Cotton, sisal/hemp, rubber Tobacco, coca Indigo · ANIMALS Llama, alpaca (transport) Guinea pig, turkey

Lopez-Carr, David

195

Western and Central Pacific Fisheries Commission David Itano Pelagic Fisheries Research Program  

E-Print Network [OSTI]

Islands, Nauru, New Zealand, Niue, Palau, Papua New Guinea, Philippines, Samoa, Solomon Islands, Chinese. · Observers IGOs NGOs #12;Palau Minami Tori Shima Northern Marianas Guam Papua New Guinea Federated States, Kiribati, Marshall Islands, Nauru, New Zealand, Niue, Palau, Papua New Guinea, Samoa, Solomon Islands

Hawai'i at Manoa, University of

196

Mon. Not. R. Astron. Soc. 000, 1--5 (1999) Printed 3 November 1999 (MN L A T E X style file v1.4) More redshifts of powerful equatorial radio sources  

E-Print Network [OSTI]

­Planck­Institut f¨ur extraterrestrische Physik, P.O.Box 1603, 87450 Garching, Germany 3 November 1999 ABSTRACT A new215, 1859\\Gamma235 and 1953\\Gamma077 (3C404). In Section 2, details of the observations and data reduction are provided. The reduced spectra are presented and discussed in Section 3. The reader is referred

Best, Philip

197

JOHN ERWIN DAMUTH Note: PDF files of refereed reprints can be obtained by contacting me at damuth@uta.edu  

E-Print Network [OSTI]

: Sedimentology, v. 24, p. 143-148. 1977 Damuth, J.E.; Late Quaternary sedimentation in the western Equatorial of the Ceara Rise: Western Equatorial Atlantic: Sedimentology, v.26, p. 825-834. 1979 Da

Yang, Zong-Liang

198

DOI: 10.1002/ejic.200700164 Chlorido-Bridged MnII  

E-Print Network [OSTI]

geometry sharing an equatorial-to-axial edge with parallel equatorial planes. The hydrogen bonds be,[3] dicyanamide,[4] and car- boxylate.[5] Ferromagnetic exchange coupling among these MnII compounds

Gao, Song

199

ENSO: Recent Evolution, Current Status and Predictions  

E-Print Network [OSTI]

four weeks, equatorial SSTs were above-average across the Pacific and western Indian Ocean and below of the central and eastern Pacific. #12;Upper-Ocean Conditions in the Equatorial Pacific The basin-wide equatorial upper ocean (0-300 m) heat content is greatest prior to and during the early stages of a Pacific

200

The influence of diet and vaccination on thymus-dependent (T) lymphocytes in experimental pulmonary tuberculosis  

E-Print Network [OSTI]

hypersensitivity reac- tions to 5 TU PPD in outbred (Hartley Strain) guinea pigs challenged by the respiratory route with virulent M. tuberculosis. . . 36 Influence of dietary protein and N. bovis BCG vaccination on delayed hypersensitivity reac- tions to 100 TU... PPD in outbred (Hartley Strain) guinea pigs challenged by the respiratory route with virulent N. tuberculosis. 37 Delayed hypersensitivity reactions to 100 TU of PPD in tuberculous Strain 2 and Strain 13 guinea pigs fed low protein (LP), control (C...

Bartow, Rebecca Ann

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Survey of Biomass Resource Assessments and Assessment Capabilities...  

Open Energy Info (EERE)

South Korea, Malaysia, Mexico, New Zealand, Papua New Guinea, Peru, Philippines, Russia, Chinese Taipei, Thailand, United States, Vietnam Australia and New Zealand,...

202

acute abdomen performed: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and chronic disease (Q fever) in humans and infects many animals with varying clinical illness and persistence. A guinea pig aerosol-challenge model of acute Q fever......

203

acute subdural hematomas: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and chronic disease (Q fever) in humans and infects many animals with varying clinical illness and persistence. A guinea pig aerosol-challenge model of acute Q fever......

204

acute subdural hematoma: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and chronic disease (Q fever) in humans and infects many animals with varying clinical illness and persistence. A guinea pig aerosol-challenge model of acute Q fever......

205

--No Title--  

Gasoline and Diesel Fuel Update (EIA)

Islands Fiji Finland France French Guiana French Polynesia Gabon Gambia, The Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guinea...

206

E-Print Network 3.0 - andrus rmet tarmo Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

OF THE AUSTRALIA NEW GUINEA FISHES ASSOCIATIONincorporated Registration No. ACO27788J Summary: H Kuiter MOUNTAIN GALAXIAS - Tarmo Raadik Chilatherina axelrodi - Barry...

207

E-Print Network 3.0 - aquaffin bradsyn peg Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of Oklahoma Collection: Biology and Medicine 15 Prolonged focal application of polyethylene glycol induces conduction block in guinea pig spinal cord white matter Summary: of...

208

NOAA Fisheries Observers An Integral Part of Observing  

E-Print Network [OSTI]

collection, tag recapture · Fisheries management, resource assessments, and bycatch reduction methodology, Papua New Guinea, Fed. States of Micronesia, Solomon Islands, Kiribati, and Vietnam) #12;11 Northeast

209

RICHARD H. GRANT, Professor of Agro-micrometeorology, Department of Agronomy, Purdue University B.S. 1977 Duke University (Distinction) 1974-1977  

E-Print Network [OSTI]

Management Association International Solar Energy Society Gamma Sigma Delta honorary agriculture research, Hungary, India, Japan, Kazakhstan, Mauritania, Mexico, Morroco, Oman, Papua New Guinea, Peoples Republic

Jackson, Scott A.

210

automata theoretic model: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Luo-Rudy dynamic model of a guinea pig ventricular cell, and a model Grosu, Radu 39 Fortuna: Model Checking Priced Probabilistic Timed Automata Computer Technologies and...

211

Albania 00-800-0010 American Samoa  

E-Print Network [OSTI]

-800-01-001 Palau SS Panama 800-0109 {Spanish} 800-2288 Papua New Guinea SS Paraguay Asuncion City 008-11-800 Peru

Fisher, Kathleen

212

A unified model of island biogeography sheds light on the zone of radiation  

E-Print Network [OSTI]

890 50 1 46 43 3 0 Tonga Australia 699 3000 11 15 13 2 0 Palau Papua New Guinea 494 585 4 26 14 12 0

213

Fast Out of the Gate: How Developing Asian Countries can Prepare...  

Open Energy Info (EERE)

Development (LEAD) program: Bangladesh, Cambodia, India, Indonesia, Laos, Malaysia, Nepal, the Philippines, Papua New Guinea, Thailand, and Vietnam. LEDSGP green logo.png This...

214

U.S. Energy Information Administration | Annual Energy Outlook...  

Gasoline and Diesel Fuel Update (EIA)

Papua New Guinea, Philippines, Samoa, Singapore, Solomon Islands, Sri Lanka, Taiwan, Thailand, Tonga, Vanuatu, and Vietnam. 7 Includes liquids produced from energy crops,...

215

E-Print Network 3.0 - allergen detection methods--a Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Guinea... hyperresponsiveness as well as the specific allergen responsiveness induced by passive sensitization are dependent... induced a specific' contractile response to the...

216

SpatialSpatialSpatial Spatial Characteristics of Characteristics of  

E-Print Network [OSTI]

Islands 160W 20N 170W 150W 10N Johnston I Palau Papua New Guinea Federated States of Micronesia Gilbert CNMI 160E 180170E Marshall Islands 160W 20N 170W 150W 10N Johnston I Palau Papua New Guinea Federated Northern Marianas Guam Federated States of Micronesia Marshall Islands Johnston Palmyra 10N Palau Papua New

Hawai'i at Manoa, University of

217

E-Print Network 3.0 - atlantic passive margin Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

margin Page: << < 1 2 3 4 5 > >> 1 Proposed Research Studentship Plate modelling, transform faults and the Cretaceous to Summary: stress evolution of the Equatorial Atlantic...

218

E-Print Network 3.0 - african continental margin Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

margin Page: << < 1 2 3 4 5 > >> 1 Proposed Research Studentship Plate modelling, transform faults and the Cretaceous to Summary: Project Description The African equatorial...

219

atlantic ocean supplementary: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

has been assessed. This area currents, which play an important role in the northwestern North Atlantic Ocean, cannot be resolved Drijfhout, Sybren 42 Equatorial currents...

220

atlantic ocean table: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

has been assessed. This area currents, which play an important role in the northwestern North Atlantic Ocean, cannot be resolved Drijfhout, Sybren 43 Equatorial currents...

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

atlantic ocean: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

has been assessed. This area currents, which play an important role in the northwestern North Atlantic Ocean, cannot be resolved Drijfhout, Sybren 42 Equatorial currents...

222

Eddy correlation measurements of the air/sea flux of dimethylsulfide over the North Pacific Ocean  

E-Print Network [OSTI]

radon over the northeast Pacific Ocean, J. Atmos. Chem. , 6,in the equatorial Pacific Ocean (1982 to 1996): Evidence ofover the northeast Pacific Ocean, J. Atmos. Chem. , Bates,

Marandino, C. A; De Bruyn, W. J; Miller, S. D; Saltzman, E. S

2007-01-01T23:59:59.000Z

223

JOURNALDE PHYSIQUEIV Colloque C5, suppl6mentau Journal de Physique 11, Volume 5,juin 1995  

E-Print Network [OSTI]

in a cold wall, atmosphericpressure CVD reactor designed to encourage laminar flow conditions they reduce space heating in cold climates or air conditioningrequirementsin equatorial climates thus reducing

Paris-Sud XI, Université de

224

E-Print Network 3.0 - african frog xenopus Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

11 Blood Parasites of Frogs From an Equatorial African Montane Forest in Western Uganda Anne M. Readel and Tony L. Goldberg*, Program in Ecology, Evolution, and Conservation...

225

Roles of Acetone and Diacetone Alcohol in Coordination and Dissociatio...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

can form stable complexes, but that the effective number of atoms coordinating with uranium in the equatorial plane does not exceed five. Diacetone alcohol ligands are shown...

226

A Spatial Deconvolution of Molecular Signals in Oceanic Dissolved Organic Matter  

E-Print Network [OSTI]

subtropical North Pacific Ocean. Limnol. Oceanogr. 47: 1595-the subtropical North Pacific Ocean. Nature 388: Karl, D. ,central equatorial Pacific Ocean, 1992: Daily and finescale

Meador, Travis B

2008-01-01T23:59:59.000Z

227

Spatial and temporal variability of the dimethylsulfide to chlorophyll ratio in the surface ocean: an assessment based on phytoplankton group dominance determined from space  

E-Print Network [OSTI]

in the equatorial Pacific Ocean (1982 to 1996): Evidence ofover the North Pacific Ocean, J. Geophys. Res. , 112,iron- induced Northeast Pacific Ocean bloom, Geophys. Res.

2010-01-01T23:59:59.000Z

228

Ammonia as an Alternative Energy Storage Medium for Hydrogen Fuel Cells: Scientific and Technical Review for Near-Term Stationary Power Demonstration Projects, Final Report  

E-Print Network [OSTI]

W. , “Non-Equatorial Ocean Thermal Energy Conversion (OTC)1988. Tanner, D. , “Ocean Thermal Energy Conversion: Currentproduced by ocean thermal energy conversion (OTEC) systems,

Lipman, Tim; Shah, Nihar

2007-01-01T23:59:59.000Z

229

E-Print Network 3.0 - arab jamahiriya mauritius Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Jamahiriya ---f- LI Liechtenstein (Principality of) --UFo LT... (Republic of) b-U-- EG Egypt (Arab Republic of) ----- SV El Salvador (Republic of) ----- GQ Equatorial... of) --uf-...

230

E-Print Network 3.0 - axially symmetric magnetic Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

magnetic Search Powered by Explorit Topic List Advanced Search Sample search results for: axially symmetric magnetic Page: << < 1 2 3 4 5 > >> 1 Axial vs. equatorial dipolar dynamo...

231

E-Print Network 3.0 - asymmetric competitive suppression Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the asymmetric equilibrium. For example... , the model exhibits multiple equilib- ria, with one equatorially symmetric ... Source: Sobel, Adam - Department of Applied...

232

Ammonia as an Alternative Energy Storage Medium for Hydrogen Fuel Cells: Scientific and Technical Review for Near-Term Stationary Power Demonstration Projects, Final Report  

E-Print Network [OSTI]

W. , “Non-Equatorial Ocean Thermal Energy Conversion (OTC)1988. Tanner, D. , “Ocean Thermal Energy Conversion: Currenthydrogen produced by ocean thermal energy conversion (OTEC)

Lipman, Tim; Shah, Nihar

2007-01-01T23:59:59.000Z

233

Alkyl nitrate (C1-C3) depth profiles in the tropical Pacific Ocean E. E. Dahl,1,2  

E-Print Network [OSTI]

and distribution of tropo- spheric ozone. Atmospheric alkyl nitrates are normally associated with polluted air free radical processes initiated by radioactive decay or cosmic rays, enzymatically mediated reactions expedition in the equatorial Pacific, an equatorial maximum in atmospheric ethyl and isopropyl nitrate

Saltzman, Eric

234

15 NOVEMBER 2003 3585W A N G E T A L . 2003 American Meteorological Society  

E-Print Network [OSTI]

tropical to subtropical region is a relatively effective area for off-equatorial wind stress to generate-Equatorial Wind XIAOCHUN WANG* AND FEI-FEI JIN Department of Meteorology, School of Ocean and Earth Science and subtropical wind stress forcing. The results show that the wind stress forcing in the tropical and subtropical

Wang, Yuqing

235

Local and remote impacts of a tropical Atlantic salinity anomaly Juliette Mignot  

E-Print Network [OSTI]

Local and remote impacts of a tropical Atlantic salinity anomaly Juliette Mignot and Claude, the salinity increase leads to a rapid deepening and cooling of the surface mixed layer. This induces a deepening of the equatorial undercurrent and an intensication of the south equatorial current. A remote

236

Coccolith Sr/Ca as a new indicator of coccolithophorid calcification and growth rate  

E-Print Network [OSTI]

Coccolith Sr/Ca as a new indicator of coccolithophorid calcification and growth rate Heather M in the eastern equatorial Pacific show variations of $ 15% in Sr/Ca ratios across the equatorial upwelling zone, with Sr/Ca highest at the equator and decreasing off-axis. These variations cannot be due to changes

Schrag, Daniel

237

Teleconnected influence of North Atlantic sea surface temperature on the El Nin~o onset  

E-Print Network [OSTI]

Carpenter Asia-Pacific Climate Impact Centre, School of Energy and Environment, City University of Hong Kong the subsequent winter and spring, which produces equatorial westerly wind anomalies in the western Pacific. The equatorial westerly wind anomalies in the winter and spring can help initiate a Pacific El Nin~o event

Wang, Chunzai

238

Weather Radar Monitoring using the Sun Iwan Holleman and Hans Beekhuis  

E-Print Network [OSTI]

Weather Radar Monitoring using the Sun Iwan Holleman and Hans Beekhuis Technical Report, KNMI TR and azimuthal averaging 13 2.5 Corrected solar power 15 3 Position of the sun 17 3.1 Celestial sphere and equatorial coordinates 17 3.2 Equatorial coordinates of the sun 18 3.3 Conversion to elevation and azimuth 20

Stoffelen, Ad

239

ENSO: Recent Evolution, Current Status and Predictions  

E-Print Network [OSTI]

Ocean. Tropical rainfall is slightly enhanced over the western equatorial Pacific. Chance of El Niño Pacific Ocean. #12;Global SST Departures (oC) During the Last Four Weeks During the last four weeks negative across the Pacific and surrounding Indonesia. #12;Upper-Ocean Conditions in the Equatorial Pacific

240

ENSO: Recent Evolution, Current Status and Predictions  

E-Print Network [OSTI]

. In the past week, SST anomalies have increased and are slightly above average across most of the Pacific Ocean in the Equatorial Pacific The basin-wide equatorial upper ocean (0-300 m) heat content is greatest priorW) and the eastern Pacific (90º-140ºW). #12;Weekly Central & Eastern Pacific Upper-Ocean (0-300 m) Average

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

REFERENCE: The Blue Planet An Introduction to Earth System  

E-Print Network [OSTI]

convection cells would transfer heat from equatorial regions, where the solar energy per unit area is parallel to the isobars. #12;This map of North America shows upper-atmosphere wind flow. The lines is greatest, to the poles, where the solar input is least. The equatorial region wo

Gilbes, Fernando

242

Visa Students by Country of Citizenship -November 2013 Region Undergraduate Graduate Total  

E-Print Network [OSTI]

(Malvinas) 0 0 0 Guinea (French) 0 0 0 Guyana 11 0 11 Paraguay 0 0 0 Peru 3 3 6 Suriname 1 0 1 Uruguay 0 0 0

243

The first fossil leptofoenine wasp (Hymenoptera, Pteromalidae): A new species of Leptofoenus in Miocene amber from the Dominican Republic  

E-Print Network [OSTI]

) northeastern Australia Doddifoenus rex Bou?ek Papua New Guinea Genus Leptofoenus Smith Leptofoenus howardi (Ashmead) Paraguay, Brazil, Surinam Leptofoenus peleciniformis Smith Brazil, Peru, Venezuela, Costa Rica Leptofoenus pittfi eldae Engel sp. n. Dominican...

Engel, Michael S.

2009-06-30T23:59:59.000Z

244

The architecture of the West African mosque : an exegesis of the Hausa and Fulani models  

E-Print Network [OSTI]

This thesis will examine two models of West African architecture-- the Mosque at Zaria, Nigeria and the Mosque at Dingueraye, Guinea. It will also attempt to illustrate implicit patterns of creative expression, both literal ...

Kahera, Akel I. (Akel Ismail)

1987-01-01T23:59:59.000Z

245

Energy Upgrade Program Revitalizing Oregon | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

areas. First to save The program needed a guinea pig to be the first to receive a free energy audit and found a willing participant in Key Carpets, a Molalla-based store...

246

2011 Korean Government Scholarship Program Guideline for International Students  

E-Print Network [OSTI]

Taipei, Belgium, Cambodia, Bangladesh, Bulgaria, Israel, Kazakhstan, Kyrgyzstan, Malaysia, Mexico, China, Ethiopia, Ghana, Guinea, Indonesia, Kazakhstan, Philippines, Vietnam 1 23 Algeria, Azerbaijan, Ghana, Kazakhstan, Mexico, Myanmar, Nepal, Pakistan, Sri Lanka, Tanzania, Thailand, Uzbekistan 1 43

Auckland, University of

247

Atmos. Chem. Phys., 10, 1101711096, 2010 www.atmos-chem-phys.net/10/11017/2010/  

E-Print Network [OSTI]

and Papua New Guinea, is one of the most heavily populated regions of the world. Biofuel and biomass burning easterly jet. Part of the pollution can reach the tropical tropopause layer, the gate- way

Meskhidze, Nicholas

248

Alternative Energy Technologies Solar Power  

E-Print Network [OSTI]

#12;Alternative Energy Technologies Solar Power Photovoltaics Concentrating Solar Power (CSP) Power;Concentrating Solar Power (CSP) Reflector material is Aluminum or Silver Tube material ..... Several possible ............... Mexico, Canada, Peru Alumina ............Guinea, Brazil, Australia, Jamaica Manganese ....... S. Africa

Scott, Christopher

249

9/4/12 Tigers and humans can coexist, says study 1/4news.mongabay.com/2012/0904-tigers-people-coexist.html  

E-Print Network [OSTI]

POPULAR PAGES Rainforests Rain forests Amazon deforestation Deforestation Deforestation stats Why Deforestation data Rainforest canopy Special sections New Guinea Finding new species Sulawesi Madagascar Borneo Extinction debate Extinction crisis Industrial deforestation Save the Amazon Rainforests & REDD Brazil

250

The effects of drainage and amendments on the physical and chemical properties of bauxite residue  

E-Print Network [OSTI]

and resistant titanium minerals. These aluminum minerals can be selectively removed and used as a source of aluminum metal. Most of the bauxite processed in the United States comes from Jamaica, Surinam, or Guinea (Farin and Reibsamen, 1969). This thesis...

Thompson, Thomas Lee

2012-06-07T23:59:59.000Z

251

ORIGINAL PAPER The bioinvasion of Guam: inferring geographic origin, pace,  

E-Print Network [OSTI]

, the Northern Marianas, and Palau. This lizard is of major impor- tance as its introduction is thought to have Treesnake Á Marianas Á Micronesia Á New Guinea Á Palau Á World War II Introduction Invasive species affect

Austin, Christopher C.

252

NOAAlNMFS Developments U.S. and South Pacific Island  

E-Print Network [OSTI]

Islands, Nauru, New Zealand, Niue, Palau, Papua New Guinea, the Solomon Is lands, Tuvalu, Vanuatu Marianas .. Philippines G\\ '; . uam . ~.~ ..·F·il·~;~~~';;::;:;' ....c;:. ;M'''h'''','''''' . : . Palau

253

E-Print Network 3.0 - algumas algas verdes Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Portions of the 12S and 16S rRNA mitochondrial regions of 30... specimens from Kenya, Uganda, Niger, Mali, Burkina-Faso, Ghana, Guinea-Bissau and Cape Verde were used Source:...

254

Mitochondrial DNA phylogenetic analysis of Myrmecolacidae (Insecta: Strepsiptera) va  

E-Print Network [OSTI]

Guinea are determined. Methods were developed for extraction, amplification, and sequencing of mitochondrial DNA (mtDNA) from Strepsiptera. High-resolution mtDNA sequences obtained by these methods were used in the phylogenetic analysis of Myrmecolacidae...

Halbert, Natalie Rose

2013-02-22T23:59:59.000Z

255

What We Know About Coyotillo  

E-Print Network [OSTI]

Coyotillo is a toxic plant that has poisoned people, cattle, sheep, goats, guinea pigs, horses, swine and chickens. This publication describes the plant, lists symptoms of livestock poisoning and discusses preventive measures....

Lyons, Robert K.; Machen, Richard V.

2000-05-16T23:59:59.000Z

256

Supplement 21, Part 7, Parasite-Subject Catalogue, Hosts  

E-Print Network [OSTI]

Caligus malabaricus: Torres Strait off Northern Australia Caligus sp. A: Sierra Leone; Gabon Caligodes laciniatus: Florida; Caribbean Sea; off Mississippi coast; off Surinam; off northern Brazil; Cape Verde Islands; Gulf of Guinea; off Sierra Leone...

Zidar, Judith A; Shaw, Judith H.; Hanfman, Deborah T.; Kirby, Margie D.; Rayburn, Jane D.; Edwards, Shirley J.; Hood, Martha W.

1978-01-01T23:59:59.000Z

257

U.S.-Africa Energy Ministerial Co-Chairs' Summary from Energy...  

Office of Environmental Management (EM)

Republic of the Gambia, the Republic of Ghana, the Republic of Guinea, the Republic of Kenya, the Kingdom of Lesotho, the Republic of Liberia, Libya, the Republic of Malawi, the...

258

The Origin and Early Cultivation of Sorghums in Africa.  

E-Print Network [OSTI]

and Domestication of Sorghum ..................................... 8 Race Bicolor .............................. 11 Race Guinea .............................. 12 Race Caudatum ........................... 13 Race Kafir... .................................... 17 Additional Bibliography Dealing with the Origins of Agriculture in Africa ...................................... 19 Archeological Evidence ..................... 19 Domestication/Origins ...................... 20 Climatalogical...

Mann, J.A.; Kimber, C.T.; Miller, F.R.

1983-01-01T23:59:59.000Z

259

Crude Existence: The Politics of Oil in Northern Angola  

E-Print Network [OSTI]

2005. Bassey, Nnimmo. 2000. “Oil and Gas in Africa. ” Paperat the Gulf of Guinea Oil and Gas Conference. February 5 –6,Remains Steady Worldwide. Oil and Gas Journal. 101(44):49.

Reed, Kristin

2009-01-01T23:59:59.000Z

260

Haneberg, W.C., Creighton, A.L., Medley, E.W., and Jonas, D.A., 2005, Use of LiDAR to assess slope haz-ards at the Lihir gold mine, Papua New Guinea, in O. Hungr, R. Fell, R. Couture, and E. Eberhardt, edi-  

E-Print Network [OSTI]

. The epithermal sulfide gold deposit was dis- covered in 1983 and mining commenced in 1997. Mining is scheduled of residual topography within a moving window, was especially useful for distinguishing colluvium landslides representation of topography around the mine and an invaluable tool for hazard assessment. #12;The three deposits

Haneberg, William C.

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

The effect of protein deficiency and M. bovis BCG vaccination on interleukin 2 activity in tuberculous ginea pigs  

E-Print Network [OSTI]

THE EFFECT OF PROTEIN DEFICIENCY AND M. bovis BCG VACCINATION ON INTERLEUKIN 2 ACTIVITY IN TUBERCULOUS GUINEA PIGS A THESIS by REBECCA LYNNE PARR Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1987 Major subject: Veterinary Microbiology THE EFFECT OF PROTEIN DEFICIENCY AND M~ BOVIS BCG VACCINATION ON INTERLEUKIN 2 ACTIVITY IN TUBERCULOUS GUINEA PIGS A Thesis by REBECCA LYNNE PARR...

Parr, Rebecca Lynne

1987-01-01T23:59:59.000Z

262

american tropical cyclone: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

24 25 Next Page Last Page Topic Index 21 Cross-equatorial influences of a South American cold surge on the development of two eastern North Pacific tropical cyclones Texas A&M...

263

Pervasive poleward shifts among North American bird species  

E-Print Network [OSTI]

Climate change is expected to influence species’ geographic distributions in the form of poleward and upward range expansion combined with extirpations from the equatorial and downslope sides of the distribution, but such shifts observed to date...

Peterson, A. Townsend; Martí nez-Meyer, Enrique

2009-01-01T23:59:59.000Z

264

Evidence for a Weak Iron Core at Earth's Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Iron Core at Earth's Center Print Seismic waves that pass through the center of the Earth travel faster going from pole to pole than along the equatorial plane-why? One theory...

265

Evidence for a Weak Iron Core at Earth's Center  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Print Wednesday, 30 April 2014 00:00 Seismic waves that pass through the center of the Earth travel faster going from pole to pole than along the equatorial plane-why? One theory...

266

atmospheric pressure cold: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

equatorial cold tongue mode attains its maximum Haak, Hein 16 FLOWS OF MASS, MOMENTUM AND ENERGY IN THE SOLAR ATMOSPHERE A SOHOORIENTED VIEW OF COLD LOOPS Physics Websites Summary:...

267

Alkyl nitrate (C 1 -C 3 ) depth profiles in the tropical Pacific Ocean  

E-Print Network [OSTI]

Experiment (WOCE), vol. 2, Pacific Ocean DRAFT, edited by M.over the equatorial Pacific Ocean during SAGA 3, J. Geophys.the troposphere over the Pacific Ocean during PEM- Tropics A

Dahl, E. E; Yvon-Lewis, S. A; Saltzman, E. S

2007-01-01T23:59:59.000Z

268

Sedimentary and mineral dust sources of dissolved iron to the world ocean  

E-Print Network [OSTI]

of the tropi- cal Pacific Ocean II. Iron biogeochemistry,in the Northeast Pacific Ocean Gyre: Aerosols, iron, and theF. M. M. : The equatorial Pacific Ocean: Grazer-controlled

Moore, J. K; Braucher, O.

2008-01-01T23:59:59.000Z

269

Mechanisms controlling dissolved iron distribution in the North Pacific: A model study  

E-Print Network [OSTI]

latitude sites in the Pacific?Ocean, J. Geophys. Res. , 96 (of the equatorial Pacific Ocean, Nature, 371(6493), 123–129,and western North Pacific Ocean, Geophys. Res. Lett. , 33,

2011-01-01T23:59:59.000Z

270

A study of lightning activity over the warm pool western Pacific Ocean (TOGA-COARE region) for 1993  

E-Print Network [OSTI]

The warm pool western Pacific Ocean is an area of the equatorial tropics characterized by strong and frequent convection, and vigorous lightning activity. However, it has been noted by various researchers that the vast oceanic expanses experience...

Rios, Luis Alberto

1995-01-01T23:59:59.000Z

271

Re-Os geochronology and coupled Os-Sr isotope constraints on the Sturtian snowball Earth  

E-Print Network [OSTI]

After nearly a billion years with no evidence for glaciation, ice advanced to equatorial latitudes at least twice between 717 and 635 Mya. Although the initiation mechanism of these Neoproterozoic Snowball Earth events has ...

Dudas, Francis O.

272

Annales Geophysicae (2004) 22: 32033209 SRef-ID: 1432-0576/ag/2004-22-3203  

E-Print Network [OSTI]

" Abstract. We present measurements of the equatorial mid- dle ultraviolet airglow taken during the week to mid- dle latitudes and influence the production and loss of iono- spheric plasma. As the magnetic

Paris-Sud XI, Université de

273

Global estimates of mineral dust aerosol iron and aluminum solubility that account for particle size using diffusion-controlled and surface-area-controlled approximations  

E-Print Network [OSTI]

in the northwest Pacific Ocean: Results from the 2002 IOCin the equatorial Pacific Ocean, Nature, 383, 508–511. Boyd,log scale, and (d) in the Pacific Ocean on log scale. Dashed

2012-01-01T23:59:59.000Z

274

Optimization and sensitivity of a global biogeochemistry ocean model using combined in situ DIC, alkalinity, and phosphate data  

E-Print Network [OSTI]

anthropogenic CO 2 in the Pacific Ocean, Global Biogeochem.dissolution in the Pacific Ocean, Global Biogeochem. Cycles,PO 4 ] in the equatorial Pacific Ocean by approximately 70%.

Kwon, Eun Young; Primeau, Francois

2008-01-01T23:59:59.000Z

275

Influence of atmospheric nutrients on primary productivity in a coastal upwelling region  

E-Print Network [OSTI]

in the northwest Pacific Ocean: Results from the 2002 IOCmarine aerosols over the Pacific Ocean, J. Atmos. Chem. , 4,in the equatorial Pacific Ocean, Nature, 383, 495–501.

2010-01-01T23:59:59.000Z

276

Carbon isotope ratios of organic compound fractions in oceanic suspended particles  

E-Print Network [OSTI]

in the northeast Pacific Ocean, J. Geophys. Res. , 101,slope to the abyssal NE Pacific Ocean, Deep Sea Res. , Partwaters of the equatorial Pacific Ocean, Deep Sea Res. , Part

Hwang, Jeomshik; Druffel, Ellen R. M

2006-01-01T23:59:59.000Z

277

Oceanic alkyl nitrates as a natural source of tropospheric ozone  

E-Print Network [OSTI]

over the equatorial Pacific Ocean during Saga 3, J. Geophys.the troposphere over the Pacific Ocean during PEM- Tropics Ain the tropical Pacific Ocean, Geophys. Res. Lett. , 32,

Neu, Jessica L; Lawler, Michael J; Prather, Michael J; Saltzman, Eric S

2008-01-01T23:59:59.000Z

278

Thermal shallow water models of geostrophic turbulence in Jovian atmospheres  

SciTech Connect (OSTI)

Conventional shallow water theory successfully reproduces many key features of the Jovian atmosphere: a mixture of coherent vortices and stable, large-scale, zonal jets whose amplitude decreases with distance from the equator. However, both freely decaying and forced-dissipative simulations of the shallow water equations in Jovian parameter regimes invariably yield retrograde equatorial jets, while Jupiter itself has a strong prograde equatorial jet. Simulations by Scott and Polvani [“Equatorial superrotation in shallow atmospheres,” Geophys. Res. Lett. 35, L24202 (2008)] have produced prograde equatorial jets through the addition of a model for radiative relaxation in the shallow water height equation. However, their model does not conserve mass or momentum in the active layer, and produces mid-latitude jets much weaker than the equatorial jet. We present the thermal shallow water equations as an alternative model for Jovian atmospheres. These equations permit horizontal variations in the thermodynamic properties of the fluid within the active layer. We incorporate a radiative relaxation term in the separate temperature equation, leaving the mass and momentum conservation equations untouched. Simulations of this model in the Jovian regime yield a strong prograde equatorial jet, and larger amplitude mid-latitude jets than the Scott and Polvani model. For both models, the slope of the non-zonal energy spectra is consistent with the classic Kolmogorov scaling, and the slope of the zonal energy spectra is consistent with the much steeper spectrum observed for Jupiter. We also perform simulations of the thermal shallow water equations for Neptunian parameter values, with a radiative relaxation time scale calculated for the same 25 mbar pressure level we used for Jupiter. These Neptunian simulations reproduce the broad, retrograde equatorial jet and prograde mid-latitude jets seen in observations. The much longer radiative time scale for the colder planet Neptune explains the transition from a prograde to a retrograde equatorial jet, while the broader jets are due to the deformation radius being a larger fraction of the planetary radius.

Warneford, Emma S., E-mail: emma.warneford@maths.ox.ac.uk; Dellar, Paul J., E-mail: dellar@maths.ox.ac.uk [OCIAM, Mathematical Institute, University of Oxford, Radcliffe Observatory Quarter, Oxford OX2 6GG (United Kingdom)

2014-01-15T23:59:59.000Z

279

The effect of dietary vitamin D level on the generation of protective cellular immunity against pulmonary tuberculosis  

E-Print Network [OSTI]

by inhibiting proliferation of antibody-producing B cells(77) or by an indirect effect on T helper-cell activity(39, 78). Moreover, calcitriol down-regulated expression of gamma interferon and granulocyte- macrophage colony-stimulating factor (GM-CSF) genes... ~ lymphoproliferation of peripheral blood lymphocytes taken from guinea pigs h 11 g d with H. t b 1o 9 Effect of dietary vitamin D status on ~o lymphoproliferation of guinea pig spleen cells after challenged with g~e~uos is. 10 Effect of dietary vitamin D level...

Hernandez-Frontera, Evaurely

1990-01-01T23:59:59.000Z

280

Interview of Les Hiatt  

E-Print Network [OSTI]

at Elephant and Castle then returned to a lectureship at Sydney in 1965 42:41:03 Continued to go back to Maningrida for next 45 years; did think about establishing another field area; went to New Guinea for a few months and for five months on the east coast...

Hiatt, Les

2005-08-24T23:59:59.000Z

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Identification of optimum potassium nutrition of greenhouse plants grown in recirculating subirrigation  

E-Print Network [OSTI]

of this research was to determine the optimum potassium nutrition of greenhouse plants grown in recirculating subirrigation. New Guinea impatiens 'Ovation Salmon Pink Swirl' were grown in recirculating subirrigation trays using 0 -12 mM K, with constant 1.5 mM P...

Blessington, Trisha R.

2002-01-01T23:59:59.000Z

282

2004 01 12 2004 11 26  

E-Print Network [OSTI]

. Liu, T. K., Y. G. Chen, W. S. Chen, and S. H. Jiang 2000 "Rates of CoolingandDenudationofthe Early-Glacial Sea-Level Rise from a Coral Recordat HounPeninsula,Papua New Guinea." Nature 349: 147-149. Chen, W. S 1 2 3 #12; 41 () (regression) (transgression) 1 0.5 (Liu et al., 2000, 2001

Chen, Wen-Shan

283

Supplement 15, Parasite-Subject Catalogue: Hosts  

E-Print Network [OSTI]

Persia Jack, K. M., 1962 a, 289 Persia Jack, K. M., 1962 a, 272, 277 all from Angola Jack, K. M., 1962 a, 283 French Guinea Jack, K. M., 1962 a, 287 British Somaliland, Upper Egypt, Abyssinia Jack, K. M., 1962 a, 287 Kurdistan, Cyprus, South...

Humphrey, Judith M.; Segal, Dorothy B.; Beard, Mary I.; Edwards, Shirley J.; Kirby, Margie D.

1966-01-01T23:59:59.000Z

284

Mechanisms underlying postjunctional synergism between responses of the vas deferens to noradrenaline and ATP  

E-Print Network [OSTI]

to noradrenaline and ATP Neil C.E. Smith, Geoffrey Burnstock* Autonomic Neuroscience Institute, Royal Free of postjunctional synergism between adenosine 5V-triphosphate (ATP) and noradrenaline were studied in isolated guinea pig vas deferens. Whereas prior exposure to ATP had no significant effect on noradrenaline

Burnstock, Geoffrey

285

Dietary alteration of the interaction between alveolar macrophages and lymphocytes in experimental tuberculosis  

E-Print Network [OSTI]

To study the interaction of alveolar macrophages (AM) and splenocytes (SC) and the dietary effects on the interaction of AM and SC in a guinea pig model of pulmonary tuberculosis, the ConA-induced proliferation of SC was quantified under various...

Zhang, Xiaotong

1996-01-01T23:59:59.000Z

286

2012 Graduate Destination Report for ANU Joint College of Science  

E-Print Network [OSTI]

Arab Emirates 1 1 United Kingdom, nfd 1 1 United States of America 3 3 Total 133 35 43 211 31 193 Canada 2 2 England 1 1 Germany 5 5 New Zealand 1 1 Papua New Guinea 1 1 Philippines 1 1 United

287

Part I of Manuscript submitted to Sedimentology, May, 2006 Unraveling the conundrum of river response to rising sea level  

E-Print Network [OSTI]

Part I of Manuscript submitted to Sedimentology, May, 2006 1 Unraveling the conundrum of river of Manuscript submitted to Sedimentology, May, 2006 2 Fly-Strickland River system, Papua New Guinea to Holocene of Manuscript submitted to Sedimentology, May, 2006 3 Mississippi River was able to resist drowning due to sea

Parker, Gary

288

JANUARY, 2010 VOL. 23, NO. 1 The Vertebral Column...  

E-Print Network [OSTI]

of a plethora of trees cut down to supply the paper that came to Joy's office. We didn't even have a recycle bin kept dogs, fishes, turtles, gerbils, guinea pigs, birds, and various pets as part of her household

Mathis, Wayne N.

289

RESEARCH Open Access Application of satellite precipitation data to  

E-Print Network [OSTI]

and epizootic in other parts of Australia. Activity of MVEV in Western Australia (WA) is monitored by detection, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia Full list of author virus and St. Louis encephalitis virus. MVEV is enzootic in northern Australia and Papua New Guinea

Ebert, Beth

290

Palaeomagnetic data from a Mesozoic Philippine Sea Plate ophiolite on Obi Island, Eastern Indonesia  

E-Print Network [OSTI]

Palaeomagnetic data from a Mesozoic Philippine Sea Plate ophiolite on Obi Island, Eastern Indonesia exposed on Obi Island, eastern Indonesia. Until the late Neogene, Obi formed part of the southern tectonic history of eastern Indonesia and northern New Guinea has been dominated by the punctuated

Royal Holloway, University of London

291

ANIMAL COGNITION Animal cognition  

E-Print Network [OSTI]

http://www.youtube.com/watch?v=NivAusARwd8 #12;Culture and social learning Kasoje, Tanzania: Oil palm of oil palm nuts. Bossou, Guinea: Chimps use the hammer- anvil tool to crack oil palm nuts. Senegal: No oil palm nuts. #12;Animal cognition ·Basic concepts ·Case study: incentive learning ·Rule learning

Cooper, Brenton G.

292

OCEAN DRILLING PROGRAM LEG 180 PRELIMINARY REPORT  

E-Print Network [OSTI]

OCEAN DRILLING PROGRAM LEG 180 PRELIMINARY REPORT ACTIVE CONTINENTAL EXTENSION IN THE WESTERN WOODLARK BASIN, PAPUA NEW GUINEA Dr. Philippe Huchon CNRS, Laboratoire de Géologie �cole Normale Supérieure and Technology University of Hawaii at Manoa 2525 Correa Road Honolulu, HI 96822-2285 U.S.A. Dr. Adam Klaus Ocean

293

Z .Marine Chemistry 64 1999 229252 The chemical composition of shallow-water hydrothermal fluids  

E-Print Network [OSTI]

; accepted 1 September 1998 Abstract Z .Submarine, hydrothermal venting occurs at Tutum Bay in shallow 5­10 m in Tutum Bay, Ambitle Island, Papua New Guinea and their effect on ambient seawater Thomas Pichler a,) , Jan Veizer a,b , Gwendy E.M. Hall c a Ottawa-Carleton Geoscience Centre, Uni�ersity of Ottawa, Ottawa

Pichler, Thomas

294

Ministerie van Verkeer en Waterstaat KNMI-publicatie 183-1  

E-Print Network [OSTI]

of Rainfall Year ',.::..'- ......\\47·· S It mm 1 3000-4000 4000-5000 > 5000 Area o Go 5' S - · - - - - · - Une of 1000 m above sealevel + Top above 3000 m o 50 100 150km Mean Amount (New Guinea), to investigate the opportunities for a salt extraction enterprise in that area, in Dutch

Stoffelen, Ad

295

International Orientation Report 2013  

E-Print Network [OSTI]

Mexico 5 Sri Lanka 1 Bangladesh 3 Guatemala 3 Nepal 1 Swaziland 1 Barbados 1 Guinea 1 Netherlands 2 students to resources on the ISSS website and campus partners to help them prepare in the time leading up to their arrival at Vanderbilt. A special section of the ISSS website is devoted to resources for Life

Bordenstein, Seth

296

Supplement 18, Part 6, Parasite-Subject Catalogue: Subject Headings And Treatment  

E-Print Network [OSTI]

parasites of Dutch soldiers who travelled from West New Guinea through Surinam to the Netherlands Arthritis Reddy, C.R.R.M.; and Sivara- [Dracunculus medinensis], mappa, M., 1968 a human (knee joint) Arthritis Woodard, J. C., I968 a Pneumonyssus...

Walker, Martha L.; Rayburn, Jane D.; Humphrey, Judith M.; Segal, Dorothy B.

1973-01-01T23:59:59.000Z

297

3-D Simulations of Ergospheric Disk Driven Poynting Jets  

E-Print Network [OSTI]

This Letter reports on 3-dimensional simulations of Kerr black hole magnetospheres that obey the general relativistic equations of perfect magnetohydrodynamics (MHD). In particular, we study powerful Poynting flux dominated jets that are driven from dense gas in the equatorial plane in the ergosphere. The physics of which has been previously studied in the simplified limit of an ergopsheric disk. For high spin black holes, $a/M > 0.95$, the ergospheric disk is prominent in the 3-D simulations and is responsible for greatly enhanced Poynting flux emission. Any large scale poloidal magnetic flux that is trapped in the equatorial region leads to an enormous release of electromagnetic energy that dwarfs the jet energy produced by magnetic flux threading the event horizon. The implication is that magnetic flux threading the equatorial plane of the ergosphere is a likely prerequisite for the central engine of powerful FRII quasars.

Brian Punsly

2007-04-05T23:59:59.000Z

298

Safety-factor profile tailoring by improved electron cyclotron system for sawtooth control and reverse shear scenarios in ITER  

SciTech Connect (OSTI)

The effect of the predicted local electron cyclotron current driven by the optimized electron cyclotron system on ITER is discussed. A design variant was recently proposed to enlarge the physics program covered by the upper and equatorial launchers. By extending the functionality range of the upper launcher, significant control capabilities of the sawtooth period can be obtained. The upper launcher improvement still allows enough margin to exceed the requirements for neoclassical tearing mode stabilization, for which it was originally designed. The analysis of the sawtooth control is carried on with the ASTRA transport code, coupled with the threshold model by Por-celli, to study the control capabilities of the improved upper launcher on the sawtooth instability. The simulations take into account the significant stabilizing effect of the fusion alpha particles. The sawtooth period can be increased by a factor of 1.5 with co-ECCD outside the q = 1 surface, and decreased by at least 30% with co-ECCD inside q = 1. The present ITER base-line design has the electron cyclotron launchers providing only co-ECCD. The variant for the equatorial launcher proposes the possibility to drive counter-ECCD with 1 of the 3 rows of mirrors: the counter-ECCD can then be balanced with co-ECCD and provide pure ECH with no net driven current. The difference between full co-ECCD off-axis using all 20MW from the equatorial launcher and 20MW co-ECCD driven by 2/3 from the equatorial launcher and 1/3 from the upper launcher is shown to be negligible. Cnt-ECCD also offers greater control of the plasma current density, therefore this analysis addresses the performance of the equatorial launcher to control the central q profile. The equatorial launcher is shown to control very efficiently the value of q{sub 0.2}-q{sub min} in advanced scenarios, if one row provides counter-ECCD.

Zucca, C.; Sauter, O.; Fable, E. [Ecole Polytechnique Federate de Lausanne, Centre de Recherches en Physique des Plasmas, Association EURATOM-Confederation Suisse, CH-1015 Lausanne (Switzerland); Henderson, M. A.; Polevoi, A. [ITER Organization, CHD Dpt, CEN Cadarache 519/007, 13108 Saint-Paul-les-Durance (France); Farina, D.; Ramponi, G. [Istituto di Fisica del Plasma, EURATOM-Enea-CNR Association, Milano (Italy); Saibene, G. [Fusion for Energy, c/Josep Pla, 08019 Barcelona (Spain); Zohm, H. [Max Planck Institut fuer Plasmaphysik IPP-EURATOM Association, Garching (Germany)

2008-11-01T23:59:59.000Z

299

Triassic-Jurassic faunal and floral transition in the Fundy Basin, Nova  

E-Print Network [OSTI]

outcrops, exposures, cores, and fossils that provide important new clues about the major features of polar ice (Frakes, 1979), this "hot house" world is marked by coal deposition in polar and equatorial through the Gulf of Mexico in the ~40 m.y. preceding the Jurassic opening of the central Atlantic Ocean

Olsen, Paul E.

300

U-Pb single zircon grain dating of Present fluvial and Cenozoic aeolian sediments from Gabon: consequences on sediment provenance, reworking, and  

E-Print Network [OSTI]

U-Pb single zircon grain dating of Present fluvial and Cenozoic aeolian sediments from Gabon: consequences on sediment provenance, reworking, and erosion processes on the equatorial West African margin margin, Denudation, Cenozoic, Sedimentary sources, Detrital sediment. Abstract. ­ U-Pb ages obtained from

Demouchy, Sylvie

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Atlantic Oceanographic and Meteorological LaboratoryNovember-December 2009 Volume 13, Number 6 AOML is an environmental research laboratory of NOAA's Office of Oceanic and Atmospheric  

E-Print Network [OSTI]

is an environmental research laboratory of NOAA's Office of Oceanic and Atmospheric Research located on Virginia KeyAtlantic With an estimated 40% of the carbon dioxide (CO2 ) from fossil fuels having entered the oceans since the start studies in the Atlantic and equatorial Pacific performed by NOAA researchers and their affiliates. Carbon

302

Atmos. Chem. Phys., 5, 311335, 2005 www.atmos-chem-phys.org/acp/5/311/  

E-Print Network [OSTI]

- sphere over Equatorial Africa (on a monthly basis) such as the Harmattan, the African Easterly Jet to the transport by the Harmattan and the AEJ of the pollutants originating from upwind fires. The confine- ment of high ozone to the lower troposphere is due to the high stability of the Harmattan and the blocking

Paris-Sud XI, Université de

303

1830 VOLUME 12J O U R N A L O F C L I M A T E 1999 American Meteorological Society  

E-Print Network [OSTI]

of the ITCZ­Equatorial Cold Tongue Complex and Causes of the Latitudinal Climate Asymmetry* BIN WANG climate asymmetry requires the presence of the ECT. The antisymmetric solar forcing due to annual variation of the solar declination angle can convert a stable latitudinal symmetric climate into a bistable

Wang, Yuqing

304

5, 163185, 2008 Joint effect of the  

E-Print Network [OSTI]

supply a large amount of warm water into Nino3 region of the north equator, result in dramatic10 local of the EPWP. Results show that both WPWP and EPWP are major providers of warm water in the eastern equatorial is China where serious droughts occur in the northern part, and heavy floods in the southern part

Paris-Sud XI, Université de

305

GEOPHYSICAL RESEARCH LETTERS, VOL. 40, 61816185, doi:10.1002/2013GL058403, 2013 Marginal instability and deep cycle turbulence in the eastern  

E-Print Network [OSTI]

GEOPHYSICAL RESEARCH LETTERS, VOL. 40, 6181­6185, doi:10.1002/2013GL058403, 2013 Marginal in the eastern equatorial Pacific Ocean, Geophys. Res. Lett., 40, 6181­6185, doi:10.1002/2013GL058403. 1-8276/13/10.1002/2013GL058403 therefore come to be known as the "deep cycle" (DC) [Gregg et al., 1985; Moum and Caldwell

306

Abstract--Thirty-three skipjack tuna (Katsuwonus pelamis) (53-73 cm fork  

E-Print Network [OSTI]

379 Abstract--Thirty-three skipjack tuna (Katsuwonus pelamis) (53-73 cm fork length) were caught) Vertical movement patterns of skipjack tuna (Katsuwonus pelamis) in the eastern equatorial Pacific Ocean, California 92037-1508 Limited information on the vertical movements of skipjack tuna (Kat- suwonus pelamis

307

Are atmospheric biases responsible for the tropical Atlantic SST biases in the CNRM-CM5 coupled  

E-Print Network [OSTI]

SST bias by more than 50% with some remote impacts over equatorial regions. In contrast, the solar heat flux correction has locally little impact on the spring cooling. A second set of experiments the spring cooling along the Equator in preconditioning the mixed-layer depth but also in the southeastern

Ribes, Aurélien

308

OCEAN DRILLING PROGRAM LEG 199 SCIENTIFIC PROSPECTUS  

E-Print Network [OSTI]

OCEAN DRILLING PROGRAM LEG 199 SCIENTIFIC PROSPECTUS PALEOGENE EQUATORIAL TRANSECT Dr. Mitchell __________________ Dr. Jack Baldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University Project Manager and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery Drive

309

December 2001 OCEAN DRILLING PROGRAM  

E-Print Network [OSTI]

December 2001 OCEAN DRILLING PROGRAM LEG 203 SCIENTIFIC PROSPECTUS DRILLING AT THE EQUATORIAL -------------------------------- Dr. Jack Bauldauf Deputy Director of Science Operations Ocean Drilling Program Texas A&M University. Acton Leg Project Manager and Staff Scientist Ocean Drilling Program Texas A&M University 1000 Discovery

310

Runion OGOA, 23-24 mai 2013, session : Atmosphre P. Maury (LMD)  

E-Print Network [OSTI]

of the gravity waves due to convection and impact on the equatorial stratosphere P. Maury, L. Guez, and F. Lott (QBO), and to improve the Semi-Annual Oscillation (SAO). 1. Lott, F., L. Guez, and P. Maury 2012Réunion OGOA, 23-24 mai 2013, session : Atmosphère P. Maury (LMD) A stochastic parameterization

311

Curriculum Vitae (last updated on 1 October 2007) Fei Chai CURRICULUM VITAE  

E-Print Network [OSTI]

Curriculum Vitae (last updated on 1 October 2007) Fei Chai 1 CURRICULUM VITAE CHAI, FEI Personal days Equatorial Pacific: 2004, 31 days #12;Curriculum Vitae (last updated on 1 October 2007) Fei Chai 3 Oceanic and Atmospheric Administration (NOAA) National Science Foundation of China (NSFC) #12;Curriculum

Maine, University of

312

Geodesic stability for KS Black hole in Horava-Lifshitz gravity via Lyapunov exponents  

E-Print Network [OSTI]

By computing the Lyapunov exponent, which is the inverse of the instability time scale associated with this geodesic motion we show that there is two region of space which in both of them the equatorial timelike geodesics are stable via Lyapunov measure of stability.

M. R. Setare; D. Momeni

2010-09-17T23:59:59.000Z

313

Weakening of the Walker Circulation and apparent dominance of El Nin~o both reach record levels, but has ENSO really changed?  

E-Print Network [OSTI]

, but has ENSO really changed? Scott B. Power1 and Ian N. Smith2 Received 21 May 2007; revised 30 July 2007 to the development of more accurate seasonal-to-interannual climate forecasts. Citation: Power, S. B., and I. N and is closely linked to the mean-state of the equatorial Pacific Ocean. It extends across the entire tropical

Power, Scott

314

Annales Geophysicae, 23, 12711280, 2005 SRef-ID: 1432-0576/ag/2005-23-1271  

E-Print Network [OSTI]

, Australia 2CRC for Satellite Systems, Australia Received: 14 October 2004 ­ Revised: 10 March 2005 for propagation of Pc3­4 energy from the generation region at the bow shock to the high-latitude ionosphere remain produced in the upstream solar wind travel earthward from the magnetopause in the magnetic equatorial plane

Paris-Sud XI, Université de

315

ATMOSPHERIC SCIENCE LETTERS Atmos. Sci. Let. 14: 107111 (2013)  

E-Print Network [OSTI]

Asia-Pacific Climate Impact Centre, School of Energy and Environment, City University of Hong Kong on the equatorial westerly wind anomalies in the western Pacific for initiating an El Ni~no event: an Atmospheric for occurrence of the westerly wind bursts. The stronger northerlies over East Asia can also induce frequent cold

Wang, Chunzai

316

Sensitivity of Global Tropical Climate to Land Surface Processes: Mean State and Interannual Variability  

E-Print Network [OSTI]

to be made in a system that allows for atmosphere­ocean interactions. 1. Introduction Future projections influence on the surface energy and water budgets. The sensitivity to those processes is represented in the intensity of equatorial Pacific trades modified by convection over land. The results further demonstrate

Xue, Yongkang

317

WAVES OC514 Spring 2012 P.B. Rhines Term project ideas  

E-Print Network [OSTI]

WAVES OC514 Spring 2012 P.B. Rhines Term project ideas 10 Apr 2012 1. Coastal trapped waves signals, seasonal cycles, wind-driven signals 2. ENSO (el Nino/Southern Oscillation) and equatorial waves events? Atmospheric Kelvin and Rossby waves bridging from one ocean to the next. Gill model

318

A coupled model study of the remote influence of enso on tropical Atlantic sst variability  

E-Print Network [OSTI]

stage one in this region. In general, the horizontal advection of heat plays a secondary role in the SST response to the remote influence of ENSO, except in the regions where the North Equatorial Countercurrent (NECC) dominates and the SST variability...

Fang, Yue

2006-08-16T23:59:59.000Z

319

Publications of the Hawaii Institute of Geophysics and Planetology University of Hawaii  

E-Print Network [OSTI]

and Pwyll: Galileo orbital remote sensing of mineralology versus morphology at two selected sites on Europa., et al. [R. Lukas, P. Hacker], 2000, Upper-ocean heat and salt balances in the western equatorial.J.L., Rothery, D.A. and Oppenheimer, C., 2000, Landsat and hyperspectral analyses of active lava flows, Remote

320

3708 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 47, NO. 11, NOVEMBER 2009 Retrieval of Atmospheric Water Vapor Density With  

E-Print Network [OSTI]

3708 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, VOL. 47, NO. 11, NOVEMBER 2009 Retrieval, remote sensing, water vapor. Manuscript received November 1, 2008; revised May 2, 2009 and August 8, 2009 the latent heat of vaporization is a principal mechanism for the transport of energy from the equatorial

Reising, Steven C.

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Icarus 169 (2004) 492498 www.elsevier.com/locate/icarus  

E-Print Network [OSTI]

-scale alternating jets at higher latitudes. The MBC cases feature stronger equatorial jets but, much weaker, small as well as small-scale alternating jets at high latitude. In contrast, the MBC results compare better of the hydrogen-rich fluid. Estimates of the metallic hydro- gen transition depths are at roughly 0

322

ELSEVIER Journal of Hydrology180(1996)31-53 Groundwater recharge in the Victoria Nile basin of east  

E-Print Network [OSTI]

in the Victoria Nile basin of east Africa: support for the soil moisture balance approach using stable isotope;revisionaccepted24 August 1995 Abstract Across equatorial Africa, increasing demand for groundwater has raised. In recent studies undertaken in the Aroca catchment of the Victoria Nile basin in central Uganda, the timing

Jones, Peter JS

323

UPWELLING IN THE COSTA RICA DOME BY KLAUS WYRTKI  

E-Print Network [OSTI]

. This current, the Costa Rica Coastal Current, and parts of the North Equatorial Current form a cyclonic circu'the horizontal circula~ion. The upwelling in the dome is caused by the cyclonic flow around the dome. When survey a deep-reaching" eddy transporting lOX 1018 cm.a/sec. "appeared to be separated and to drift north

324

Astronomy & Astrophysics manuscript no. 16193paper.hyper2884 c ESO 2010 December 13, 2010  

E-Print Network [OSTI]

disc. We measured the dusty disc inner inner rim, i.e. 6 mas, constrained the inclination angle of the dense equatorial disc. Moreover, as the expansion velocity is negligible, radiatively driven wind). Fast rotation of the star leads to an expanding disc-like wind in the case of very massive stars

Boyer, Edmond

325

Annales Geophysicae (2002) 20: 289291 c European Geophysical Society 2002 Geophysicae  

E-Print Network [OSTI]

altitude), 62.8 inclined orbit which crossed the equatorial parts of the Earth's envi- ronment at distances of a few tens of Earth's radii, and was therefore particularly suitable for solar wind year later into a 750 km perigee, 20 000 km apogee altitude orbit of almost the same inclination

Paris-Sud XI, Université de

326

Island-finding ability of marine turtles  

E-Print Network [OSTI]

of the equatorial Atlantic. To test the hypothesis that turtles use wind-borne cues to locate Ascension Island we back to the island. These find- ings strongly support the hypothesis that wind-borne cues are used that hatch- ling loggerhead turtles (Caretta caretta) have the ability to perceive the inclination

Hays, Graeme

327

Clim. Past, 4, 2934, 2008 www.clim-past.net/4/29/2008/  

E-Print Network [OSTI]

of the equatorial Indian Ocean and of the Mediterranean Sea. Other extreme climate events are also recorded climate change, the mid-Brunhes event (MBE, Jansen et al., 1986), roughly corresponds to the transition be under the Creative Commons Attribution 3.0 License. Climate of the Past Strong summer monsoon during

Boyer, Edmond

328

Climate Activity 1 Frontiers of Science Seminar Activity Following Broecker's First Lecture  

E-Print Network [OSTI]

. World Population. The reddest color corresponds to a population density of 1000 people per square populated (reddish) band crossing Africa just south of the Sahara desert. By correlating this region. The great rain forests of Brazil and equatorial Africa are dark green. The band of forests running across

Menke, William

329

Molecular Ecology (2001) 10, 22412247 2001 Blackwell Science Ltd  

E-Print Network [OSTI]

individuals from four populations of wild living gorillas in East Africa was ascertained by sequencing, as gorillas live at reasonably uniform densities across sites and across habitats (Yamagiwa 1999), population populations are found in equatorialAfrica in two widely separated regions: West Africa and East/Central Africa

Seaman, Michael I.

330

VOLUME 12 APRIL 1999J O U R N A L O F C L I M A T E 1999 American Meteorological Society 917  

E-Print Network [OSTI]

VOLUME 12 APRIL 1999J O U R N A L O F C L I M A T E 1999 American Meteorological Society 917 Remote the solar radiation absorbed by the ocean, thereby leading to enhanced SSTs. In the tropical North Atlantic. These relationships fit the concept of an ``atmospheric bridge'' that connects SST anomalies in the central equatorial

331

Honors Seminar 256 --cheat sheet for 10/6/2011 --Andrew Baker Koch et al. (2010)  

E-Print Network [OSTI]

of the Kepler mission that might have been different if it had been an Australian rather than an American, etc. · centroid = estimate of the central position of a star or other object, which can be determined northern/equatorial region of the sky, executed by a consortium of univer- sities led by Princeton · solar

Baker, Andrew J.

332

Role of AirSea Interaction in the Long Persistence of El Nin~oInduced North Indian Ocean Warming*  

E-Print Network [OSTI]

Walker circulation adjustments, causing a sustained SST warming in the tropical southwest IO (SWIO) where in the equatorial Pacific with pro- found influences on the global climate. For example, El Nin~o causes sea surfaceRole of Air­Sea Interaction in the Long Persistence of El Nin~o­Induced North Indian Ocean Warming

Xie, Shang-Ping

333

GEOPHYSICAL RESEARCH LETTERS, VOL. 0, NO. 0, PAGES 0-0, M 0, 2001 Decadal variations in the Subtropical Cells and  

E-Print Network [OSTI]

for generating decadal sea sur- face temperature (SST) variability in the equatorial Pacific is investigated Frontier Research System for Global Change, Yoko- hama, Japan Copyright 2001 by the American Geophysical T . For example, although the V T mechanism is important for generating subsurface variability in the sub

Xie, Shang-Ping

334

2013 UNITED KINGDOM ATOMIC ENERGY AUTHORITY The following article appeared in Proceedings of the 27th Symposium On Fusion Technology  

E-Print Network [OSTI]

© 2013 UNITED KINGDOM ATOMIC ENERGY AUTHORITY The following article appeared in Proceedings Torino, Torino, Italy In the ITER equatorial ports containing ICRH antennas, parasitic electrical resonances can be excited in the nominal 20 mm clearance gap between the port walls and the plug contained

335

Icarus 187 (2007) 520539 www.elsevier.com/locate/icarus  

E-Print Network [OSTI]

the vertical wind shear because Voyager and Cassini observations show that the winds become slower triggers vertical momentum redistribution, a minor speed change in the troposphere can lead to a substantial stratospheric wind speed change; (2) storm- triggered turbulent mixing slows a prograde equatorial

336

Mercury methylation in oxygen deficient zones of the oceans: No evidence for the predominance of anaerobes  

E-Print Network [OSTI]

Mercury methylation in oxygen deficient zones of the oceans: No evidence for the predominance Keywords: Methylmercury Oxygen minimum zone Arabian Sea Equatorial Eastern Pacific Mercury methylation Although a large fraction of the world's population is exposed to mercury through consumption of marine

Morel, François M. M.

337

Modeling suggests that oblique extension facilitates rifting and continental break-up  

E-Print Network [OSTI]

Modeling suggests that oblique extension facilitates rifting and continental break-up Sascha Brune; accepted 5 June 2012; published 2 August 2012. [1] In many cases the initial stage of continental break-up was and is associated with oblique rifting. That includes break-up in the Southern and Equatorial Atlantic, separation

Kaus, Boris

338

South Atlantic margins of Africa. page 1 South Atlantic continental margins of Africa  

E-Print Network [OSTI]

South Atlantic margins of Africa. page 1 South Atlantic continental margins of Africa: a comparison The South Atlantic continental passive margins of Africa comprise the major depocentres on the African plate of the tectonic vs climate interplay on the evolution of equatorial west Africa and SW Africa margins Michel

Paris-Sud XI, Université de

339

South Atlantic continental margins of Africa: A comparison of the tectonic vs climate interplay on the evolution  

E-Print Network [OSTI]

South Atlantic continental margins of Africa: A comparison of the tectonic vs climate interplay on the evolution of equatorial west Africa and SW Africa margins Michel Se´ranne *, Zahie Anka UMR 5573 Dynamique February 2005; accepted 18 July 2005 Abstract Africa displays a variety of continental margin structures

Demouchy, Sylvie

340

Geology & Earth Science Geology is the science that pursues an  

E-Print Network [OSTI]

, Ar, CO2, and water vapor). Hydrosphere: The totality of the Earth's water, except the water vapor of Light Atlantic Ocean Caribbean Sea Gulf of Mexico Southern Ocean Southern Ocean Indian Ocean Pacific of the equatorial zone. Arrows show the most common trajectories of dust transported during major storms. #12;20 #12

Gilbes, Fernando

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Oceanographic Observations Off the Pacific Northwest Following the 1982 EI Nino Event  

E-Print Network [OSTI]

Oceanographic Observations Off the Pacific Northwest Following the 1982 EI Nino Event R. K. REED that EI Nino events in the equatorial Pacific are frequently ac- companied by significant warming be important (Chelton and Davis, 1982). The EI Nino events do produce strik- ing visual coherence in sea level

342

Standard Guide for Irradiation of Pre-packaged Processed Meat and Poultry Products to Control Pathogens and Other Microorganisms  

E-Print Network [OSTI]

1.1 This guide outlines procedures for the irradiation of pre-packaged refrigerated and frozen processed meat and poultry products. Note 1—The Codex Alimentarius Commission defines "meat" (including poultry and game) as "the edible part of any mammal slaughtered in an abattoir," and "poultry meat" as "the edible part of slaughtered domesticated birds, including chicken, turkeys, ducks, geese, guinea-fowls, or pigeons." (CAC/RCP 13-1976) Note 2—Current U.S. regulations limit the definition of livestock species to cattle, sheep, swine, goat, horse, mule, or other equine and poultry species to chicken, turkey, duck, goose, and guinea (2, 3). 1.2 This guide addresses all refrigerated and frozen meat and poultry products NOT covered by Guide F 1356. 1.3 This guide provides information regarding absorbed doses used for inactivation of parasites and reduction of bacterial load. Such doses are typically less than 10 kilogray (kGy).

American Society for Testing and Materials. Philadelphia

2005-01-01T23:59:59.000Z

343

Geological Modeling of Dahomey and Liberian Basins  

E-Print Network [OSTI]

eastern Ivory Coast, off Benin and western Nigeria, and off the Brazilian conjugates of these areas), while large areas were subjected to transform rifting (northern Sierra Leone, southern Liberia, Ghana and the Brazilian conjugates of these areas...). The future Demerara-Guinea marginal plateaus were also progressively subjected to this new rifting event. Stage 2: In Aptian times, the progress of rifting resulted in the creation of small divergent Basins (off northern Liberia, eastern Ivory Coast, Benin...

Gbadamosi, Hakeem B.

2010-01-16T23:59:59.000Z

344

2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 899 www.advmat.de  

E-Print Network [OSTI]

de la Cruz 3, 28049 Madrid, Spain E-mail: paco.guinea@icmm.csic.es Dr. E. Cappelluti Institute Madrileño de Estudios Avanzados en Nanociencia IMDEA-Nanociencia E-28049 Madrid, Spain Prof. N. Agraït, Prof Campus de Cantoblanco, E-28049 Madrid, Spain E-mail: gabino.rubio@uam.es DOI: 10.1002/adma.201203731 Two

Cappelluti, Emmanuele

345

Thicket manipulation and static inventory control  

E-Print Network [OSTI]

minicomputer system, especially for the smaller companies. There is a growing need to produce software modules which will properly model the problems of small busi- nesses and organizations, and which not only offers effective, efficient solutions... un- solved problem in mathematics [ 23 ]. Mother puzzle approach to graphs was proposed in 1859 when Sir William Hamilton (1805 ? 1865) marketed the idea for a game, "Around The World" to a London toy manufacturer for twenty-five guineas...

Jones, Marvin Rex

1974-01-01T23:59:59.000Z

346

Averting biodiversity collapse in tropical forest protected areas  

E-Print Network [OSTI]

´xico, Veracruz 95701, Mexico. 13Columbia University, New York, New York 10027, USA. 14Nordic Foundation for Development and Ecology, DK-1159 Copenhagen, Denmark. 15Bart De Dijn Environmental Consultancy, Paramaribo, Suriname. 16Florida International University...Republic. 126University ofWashington, Seattle, Washington 98195, USA. 127PNG Institute of Biological Research, Goroka, Papua New Guinea. 128University of Suriname, Paramaribo, Suriname. 129113-3885 Richet Rd, Prince George, British Columbia V2K 2J2, Canada. 130...

Laurence, William F.

2012-08-01T23:59:59.000Z

347

U.S. Department of the Interior U.S. Geological Survey  

E-Print Network [OSTI]

i n e B a s i n PALAU TRENCH 200 60 60 200 60 F F' E' E D D' C' C G' G A A' Victoria Quezon City Mariana Islands Irian Jaya New Guinea Birds Head Peninsula Sulawesi Palau Islands HALMAHERA TRENCH P A C IOcean Honshu Kyushu Shikoku Kuyushu -Palau Ridge D a i t o R i d g e Okinawa Miyako Jima Iriomote Jima Luzon

Fleskes, Joe

348

Problem-Solving with Orangutans (Pongo pygmaeus and Pongo abelii) and Chimpanzees (Pan troglodytes): Using the IPAD to Provide Novel Enrichment Opportunities  

E-Print Network [OSTI]

palm nut cracking in Bossou, Guinea (Biro and Inoue-Nakamura, 2003), hunting prosimians in Fongoli, Senegal (Pruetz and Bertolani, 2007), and termite fishing in Gombe National Park, Tanzania (Lonsdorf, 2005). Orangutans also engage in tool use... and engage in tool use. Female chimpanzees have a higher frequency, efficiency, and duration of tool use for termite fishing than male chimpanzees in Gombe (Lonsdorf, 2005). Other enrichment studies have also found that juveniles spend more time...

Boostrom, Helen

2013-12-16T23:59:59.000Z

349

The problem of living in a world contaminated with chemicals  

SciTech Connect (OSTI)

The proliferation of xenobiotic chemicals in the global environment poses living problems for each of us aboard {open_quotes}spaceship earth.{close_quotes} Seven case studies are presented that illustrate the magnitude of the problem that can result from waiting to identify toxic hazards until there have been decades of {open_quotes}human guinea pig{close_quotes} exposure. 25 refs., 5 tabs.

Metcalf, R.L. [Univ. of Illinois, Urbana (United States)

1990-12-31T23:59:59.000Z

350

Role of shocks and mix caused by capsule defects  

SciTech Connect (OSTI)

An Eulerian code with a turbulent mix model is used to model a set of plastic (CH) ablator capsules with and without equatorial grooves. The 'perfect' capsule results were used to calibrate simulations of capsules with equatorial grooves of different depths that provided information on increasingly perturbed implosions. Simulations with a turbulence model were able to calculate the same yield over mix (YOM) ratio (experiment/mix simulation) of 0.2 to 0.3 for thin (8-{mu}m thick) and thick shell (15-{mu}m thick) capsules with no grooves and thin capsules with shallow grooves. When the capsules have deep grooves, the YOM ratio increases to greater than unity, probably because the deformed shocks focus too strongly on the symmetry axis in our two-dimensional simulations. This is supported by a comparison of simulated and experimental x-ray images.

Bradley, P. A.; Cobble, J. A.; Tregillis, I. L.; Schmitt, M. J.; Obrey, K. D.; Batha, S. H.; Magelssen, G. R.; Fincke, J. R.; Hsu, S. C.; Krasheninnikova, N. S.; Murphy, T. J.; Wysocki, F. J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Glebov, V. [Laboratory for Laser Energetics, Rochester, New York 14623 (United States)

2012-09-15T23:59:59.000Z

351

CHARGED TORI IN SPHERICAL GRAVITATIONAL AND DIPOLAR MAGNETIC FIELDS  

SciTech Connect (OSTI)

A Newtonian model of non-conductive, charged, perfect fluid tori orbiting in combined spherical gravitational and dipolar magnetic fields is presented and stationary, axisymmetric toroidal structures are analyzed. Matter in such tori exhibits a purely circulatory motion and the resulting convection carries charges into permanent rotation around the symmetry axis. As a main result, we demonstrate the possible existence of off-equatorial charged tori and equatorial tori with cusps that also enable outflows of matter from the torus in the Newtonian regime. These phenomena qualitatively represent a new consequence of the interplay between gravity and electromagnetism. From an astrophysical point of view, our investigation can provide insight into processes that determine the vertical structure of dusty tori surrounding accretion disks.

Slany, P.; Kovar, J.; Stuchlik, Z. [Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava Bezrucovo nam. 13, CZ-746 01 Opava (Czech Republic)] [Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava Bezrucovo nam. 13, CZ-746 01 Opava (Czech Republic); Karas, V., E-mail: petr.slany@fpf.slu.cz [Astronomical Institute, Academy of Sciences, Bocni II, Prague CZ-141 31 (Czech Republic)

2013-03-01T23:59:59.000Z

352

Geodesic stability, Lyapunov exponents and quasinormal modes  

E-Print Network [OSTI]

Geodesic motion determines important features of spacetimes. Null unstable geodesics are closely related to the appearance of compact objects to external observers and have been associated with the characteristic modes of black holes. By computing the Lyapunov exponent, which is the inverse of the instability timescale associated with this geodesic motion, we show that, in the eikonal limit, quasinormal modes of black holes in any dimensions are determined by the parameters of the circular null geodesics. This result is independent of the field equations and only assumes a stationary, spherically symmetric and asymptotically flat line element, but it does not seem to be easily extendable to anti-de Sitter spacetimes. We further show that (i) in spacetime dimensions greater than four, equatorial circular timelike geodesics in a Myers-Perry black hole background are unstable, and (ii) the instability timescale of equatorial null geodesics in Myers-Perry spacetimes has a local minimum for spacetimes of dimension d > 5.

Vitor Cardoso; Alex S. Miranda; Emanuele Berti; Helvi Witek; Vilson T. Zanchin

2009-03-12T23:59:59.000Z

353

A MATHEMATICAL MODEL FOR AN HOURGLASS MAGNETIC FIELD  

SciTech Connect (OSTI)

Starting with a mathematical boundary value problem for the magnetic vector potential in an axisymmetric cylindrical coordinate system, we derive a general solution for any arbitrary current distribution using the method of Green's functions. We use this to derive an analytic form for an hourglass magnetic field pattern created by electrical currents that are concentrated near (but not confined within) the equatorial plane of a cylindrical coordinate system. Our solution is not characterized by a cusp at the equatorial plane, as in previous solutions based on a current sheet. The pattern we derive provides a very good fit to hourglass magnetic field patterns emerging from three-dimensional numerical simulations of core formation, and can in principle be used for source-fitting of observed magnetic hourglass patterns.

Ewertowski, Bartek; Basu, Shantanu, E-mail: basu@uwo.ca [Department of Physics and Astronomy, Western University, London, Ontario N6A 3K7 (Canada)] [Department of Physics and Astronomy, Western University, London, Ontario N6A 3K7 (Canada)

2013-04-10T23:59:59.000Z

354

The modeling of the ENSO events with the help of a simple model  

E-Print Network [OSTI]

The Southern Oscillation (ENSO) is modelled with the help of a simple model representing a classical damped oscillator forced by external forcing. Eastern Pacific sea surface temperature (SST) and the mean equatorial Pacific thermocline depth correspond to the roles of momentum and position. The external forcing of the system is supplied by short-period meridional mass fluctuations in the Pacific sector of the Southern Ocean due to the joint effect of the atmospheric variability over the Antarctic Circumpolar Current (ACC), bottom topography and coastlines, and also by the variability of westerly winds in the tropics. Under such conditions the ENSO-like oscillations arise as a result of propagation of signals due to both initial signals appeared in the Southern Ocean and the tropical westerly wind anomaly, that propagate then across the equatorial Pacific by means of fast wave processes. The external forcings are the main factor in establishing the oscillation pattern.

Stepanov, V N

2007-01-01T23:59:59.000Z

355

Evidence for ablated flows in the shell of nova DQ Her  

E-Print Network [OSTI]

High-resolution longslit Halpha spectra of the shell of the old nova DQ Her have been obtained with the William Herschel Telescope using the ISIS spectrograph. An equatorial expansion velocity of 370+/-14 km/s is derived from the spectra which, in conjunction with a narrowband Halpha image of the remnant, allows a distance estimate of 525+/-28 pc. An equatorial ring which exhibits enhanced [NII] emission has also been detected and the inclination angle of the shell is found to be 86.8+/-0.2 degrees with respect to the line of sight. The spectra also reveal tails extending from the clumps in the shell, which have a radial velocity increasing along their length. This suggests the presence of a stellar wind, collimated in the polar direction, which ablates fragments of material from the clumps and accelerates them into its stream up to a terminal velocity of order 800-900 km/s.

N. M. H. Vaytet; T. J. O'Brien; A. P. Rushton

2007-06-01T23:59:59.000Z

356

Flowing Liquid Crystal Simulating the Schwarzschild Metric  

E-Print Network [OSTI]

We show how to simulate the equatorial section of the Schwarzschild metric through a flowing liquid crystal in its nematic phase. Inside a liquid crystal in the nematic phase, a traveling light ray feels an effective metric, whose properties are linked to perpendicular and parallel refractive indexes, $n_o$ e $n_e$ respectively, of the rod-like molecule of the liquid crystal. As these indexes depend on the scalar order parameter of the liquid crystal, the Beris-Edwards hydrodynamic theory is used to connect the order parameter with the velocity of a liquid crystal flow at each point. This way we calculate a radial velocity profile that simulates the equatorial section of the Schwarzschild metric, in the region outside of Schwarzschild's radius, in the nematic phase of the liquid crystal. In our model, the higher flow velocity can be of the order of some meters per second.

Erms R. Pereira; Fernando Moraes

2010-11-21T23:59:59.000Z

357

The determination of energies for cyclohexyl ring inversion adjacent to tin  

E-Print Network [OSTI]

studied by variable temperature nuclear magnetic resonance spectroscopy. At temperatures below -60'C, both axial and equatorial conformers displayed distinct peaks in both tsC and ttsSn NMR spectroscopy. At temperatures above -60 C, time averaged... spectra were observed displaying the two conformers in peak coalescence. In the spectra where two peaks were observed, peak integration was used to determine the relative population of each. NMR simulation was then utilized to obtain rates of exchange...

Chambers, Paul Wayne

1991-01-01T23:59:59.000Z

358

Oligocene climate dynamics  

E-Print Network [OSTI]

]. There is no means of constraining this diagenetic offset at present, but it never- theless must be small relative to the signal amplitude. The preservation of distinctive stable isotope signals, particu- larly in the carbon isotope record, the cyclic nature... impact on the global carbon burial and equatorial productivity, as cyclic variations are also recorded in the carbon isotope signal of planktonic and benthic foraminifera, the water column carbon isotope gradient, and estimated percent carbonate of bulk...

Wade, Bridget S.; Palike, Heiko

359

ENSO regimes and the late 1970's climate shift: The role of synoptic weather and South Pacific ocean spiciness  

SciTech Connect (OSTI)

South Pacific subtropical density compensated temperature and salinity (spiciness) anomalies are known to be associated with decadal equatorial variability, however, the mechanisms by which such disturbances are generated, advect and the degree to which they modulate the equatorial thermocline remains controversial. During the late 1970's a climate regime transition preceded a period of strong and sustained El Nino events. Using an ocean general circulation model forced by the constituent mechanical and thermodynamic components of the reanalysed atmosphere we show that the late 1970's transition coincided with the arrival of a large-scale, subsurface cold and fresh water anomaly in the central tropical Pacific. An ocean reanalysis for the period 1990–2007 that assimilates subsurface Argo, XBT and CTD data, reveals that disturbances occur due to the subduction of negative surface salinity anomalies from near 30° S, 100° W which are advected along the ?=25–26 kgm{sup ?3} isopycnal surfaces. These anomalies take, on average, seven years to reach the central equatorial Pacific where they may substantially perturb the thermocline before the remnants ultimately ventilate in the region of the western Pacific warm pool. Positive (warm–salty) disturbances, known to occur due to late winter diapycnal mixing and isopycnal outcropping, arise due to both subduction of subtropical mode waters and subsurface injection. On reaching the equatorial band (10° S–0° S) these disturbances tend to deepen the thermocline reducing the model's ENSO. In contrast the emergence of negative (cold–fresh) disturbances at the equator are associated with a shoaling of the thermocline and El Nino events. Process studies are used to show that the generation and advection of anomalous density compensated thermocline disturbances critically depend on stochastic forcing of the intrinsic ocean by weather. We further show that in the absence of the inter-annual component of the atmosphere forcing Central Pacific El Nino events are manifest.

O'Kane, Terence J.; Matear, Richard J.; Chamberlain, Matthew A.; Oke, Peter R.

2014-08-15T23:59:59.000Z

360

The Raychaudhuri equation for spinning test particles  

E-Print Network [OSTI]

We obtain generalized Raychaudhuri equations for spinning test particles corresponding to congruences of particle's world-lines, momentum, and spin. These are physical examples of the Raychaudhuri equation for a non-normalized vector, unit time-like vector, and unit space-like vector. We compute and compare the evolution of expansion-like parameters associated with these congruences for spinning particles confined in the equatorial plane of the Kerr space-time.

Mohseni, Morteza

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Motion of spinning test bodies in Kerr spacetime  

E-Print Network [OSTI]

We investigate the motion of spinning test bodies in General Relativity. By means of a multipolar approximation method for extended test bodies we derive the equations of motion, and classify the orbital motion of pole-dipole test bodies in the equatorial plane of the Kerr geometry. An exact expression for the periastron shift of a spinning test body is given. Implications of test body spin corrections are studied and compared with the results obtained by means of other approximation schemes.

Eva Hackmann; Claus Lämmerzahl; Yuri N. Obukhov; Dirk Puetzfeld; Isabell Schaffer

2014-09-23T23:59:59.000Z

362

Progress toward the synthesis of (+)-dibromophakellin and congeners: proposed final stages for palau'amine synthesis  

E-Print Network [OSTI]

moiety is electron poor thus the pyrrole nitrogen lone pair does not induce such a strong anomeric effect and the hydroxyl group occupies the more thermodynamically stable equatorial position on steric grounds. Interestingly, when diol 29 was exposed... on the assumption that one enantiomer does not antagonize the action of the other while being assayed together. E. Conclusion The pyrrole-imidazole alkaloid family of natural products illustrates the diversity of topographically unique molecules with potent...

Franco-Torres, Francisco Miguel

2009-05-15T23:59:59.000Z

363

Synoptic-scale East Asian cold surge-induced phenomena  

E-Print Network [OSTI]

the way across the Pacific to regenerate near 120 W. Composite height fields in the vicinity of the cyclones indicated that changes in the longwave pattern over the Pacific accompanied the shortwave midlatitude response. The east Pacific ridge amplified... OLR anomalies over the Indian and western equatorial Pacific Oceans. Fluctuations in the windfield near the exit region of the East Asian jet were important components of the 28-72 day oscillations during the northern winter. The validity...

Sautter, David Carl

1988-01-01T23:59:59.000Z

364

Electron and wave characteristics observed by the THEMIS satellites near the magnetic equator during a pulsating aurora  

E-Print Network [OSTI]

during a pulsating aurora A. Nakajima,1,2 K. Shiokawa,1 K. Sakaguchi,1,3 Y. Miyoshi,1 S. Lee,1 V the magnetic equatorial plane during a pulsating aurora event on the high latitude side of the auroral oval. The pulsating aurora was observed by a 30-Hz sampled all-sky imager (ASI) at Gillam (56.4 N, 265.4 E), Canada

California at Berkeley, University of

365

PENETRATING THE HOMUNCULUS-NEAR-INFRARED ADAPTIVE OPTICS IMAGES OF ETA CARINAE  

SciTech Connect (OSTI)

Near-infrared adaptive optics imaging with the Near-Infrared Coronagraphic Imager (NICI) and NaCO reveal what appears to be a three-winged or lobed pattern, the 'butterfly nebula', outlined by bright Br{gamma} and H{sub 2} emission and light scattered by dust. In contrast, the [Fe II] emission does not follow the outline of the wings, but shows an extended bipolar distribution which is tracing the Little Homunculus ejected in {eta} Car's second or lesser eruption in the 1890s. Proper motions measured from the combined NICI and NaCO images together with radial velocities show that the knots and filaments that define the bright rims of the butterfly were ejected at two different epochs corresponding approximately to the great eruption and the second eruption. Most of the material is spatially distributed 10{sup 0}-20{sup 0} above and below the equatorial plane apparently behind the Little Homunculus and the larger SE lobe. The equatorial debris either has a wide opening angle or the clumps were ejected at different latitudes relative to the plane. The butterfly is not a coherent physical structure or equatorial torus but spatially separate clumps and filaments ejected at different times, and now 2000-4000 AU from the star.

Artigau, Etienne [Gemini Observatory-South and Departement de Physique and Observatoire du Mont Megantic, Universite de Montreal, QC, H3C 3J7 (Canada); Martin, John C. [Department of Physics and Astronomy, University of Illinois-Springfield, IL 62703 (United States); Humphreys, Roberta M.; Davidson, Kris [Astronomy Department, University of Minnesota, Minneapolis, MN 55455 (United States); Chesneau, Olivier [UMR 6525 H. Fizeau, Univ. Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, BP4229 F-06304 Nice, Cedex 4 (France); Smith, Nathan [Astronomy Department, University of California, Berkeley, CA 94720 (United States)

2011-06-15T23:59:59.000Z

366

Dissecting the Homunculus nebula around Eta Carinae with spatially resolved near-infrared spectroscopy  

E-Print Network [OSTI]

Near-infrared emission lines provide unique diagnostics of the geometry, structure, kinematics, and excitation of eta Carinae's circumstellar ejecta, and give clues to the nature of its wind. The infrared spectrum is a strong function of position in eta Car's nebula, with a mix of intrinsic and reflected emission. Molecular hydrogen traces cool gas and dust in the polar lobes, while [Fe II] blankets their inner surfaces. These lines reveal the back wall of the SE polar lobe for the first time, and give the clearest picture yet of the 3-D geometry. Additionally, collisionally-excited [Fe II] reveals the kinematic structure of a recently discovered `Little Homunculus' expanding inside the larger one. Equatorial gas in the `Fan', on the other hand, shows a spectrum indicating recombination and fluorescent pumping. Some equatorial ejecta glow in the He I 10830 line, showing evidence for material ejected in the 1890 outburst of eta Car. Closer to the star, the compact `Weigelt blobs' are marginally resolved, allowing their infrared spectrum to be separated from the star for the first time. In general, infrared spectra reveal a coherent, directional dependence of excitation in the Homunculus: polar ejecta are collisionally excited, whereas equatorial ejecta are dominated by fluorescence and normal photoexcitation. These are important clues to the geometry of the central star's UV radiation field. Reflected near-infrared emission lines also reveal interesting latitudinal dependence in the stellar wind.

Nathan Smith

2002-11-27T23:59:59.000Z

367

Design of Electron Cyclotron Heating and Current Drive System of ITER  

SciTech Connect (OSTI)

Since the end of EDA, the design of the Electron Cyclotron Heating and Current Drive (ECH and CD) system has been modified to respond to progress in physics understanding and change of interface conditions. Nominal RF power of 20 MW is shared by four upper launchers or one equatorial launcher RF beams are steered by front steering mirrors providing wide sweeping angle for the RF beam. DC high voltage power supply may be composed of IGBT pulse step modulators because of high frequency modulation and design flexibility to three different types of 170 GHz gyrotrons provided by three parties. The RF power from the 170 GHz gyrotron is transmitted to the launcher by 63.5 mm{phi} corrugated waveguide line and remotely switched by a waveguide switch between the upper launcher and the equatorial launcher. The ECH and CD system has also a start-up sub-system for assist of initial discharge composed of three 127.5 GHz gyrotrons and a dedicated DC high voltage power supply. Three of transmission lines are shared between 170 GHz gyrotron and 127.5 GHz gyrotron so as to inject RF beam for the start-up through the equatorial launcher. R and Ds of components for high power long pulse and mirror steering mechanism have been on-going in the parties to establish a reliable ITER ECH and CD system.

Kobayashi, N. [ITER, Cadarache (France); Bigelow, T.; Rasmussen, D. [ORNL, Oak Ridge (United States); Bonicelli, T.; Ramponi, G.; Saibene, G. [EFDA, Garching (Germany); Cirant, S. [ENEA-CNR, Milan (Italy); Denisov, G. [IAP, Nizhny Novgorod (Russian Federation); Heidinger, R.; Piosczyk, B. [FZK, Karlsruhe (Germany); Henderson, M.; Hogge, J.-P.; Thumm, M.; Tran, M. Q. [CRPP, Lausanne (Switzerland); Rao, S. L. [IPR, Bhat (India); Sakamoto, K.; Takahashi, K. [JAEA, Naka (Japan); Temkin, R. J. [MIT PSFC, Cambridge (United States); Verhoeven, A. G. A. [FOM IPP, Rijnhuizen (Netherlands); Zohm, H. [MPI IPP, Garching (Germany)

2007-09-28T23:59:59.000Z

368

Applications of pulsed EPR spectroscopy to structural studies of sulfite oxidizing enzymes  

SciTech Connect (OSTI)

Sulfite oxidizing enzymes (SOEs), including sulfite oxidase (SO) and bacterial sulfite dehydrogenase (SDH), catalyze the oxidation of sulfite (SO32?) to sulfate (SO42?). The active sites of SO and SDH are nearly identical, each having a 5-coordinate, pseudo-square-pyramidal Mo with an axial oxo ligand and three equatorial sulfur donor atoms. One sulfur is from a conserved Cys residue and two are from a pyranopterindithiolene (molybdopterin, MPT) cofactor. The identity of the remaining equatorial ligand, which is solvent-exposed, varies during the catalytic cycle. Numerous in vitro studies, particularly those involving electron paramagnetic resonance (EPR) spectroscopy of the Mo(V) states of SOEs, have shown that the identity and orientation of this exchangeable equatorial ligand depends on the buffer pH, the presence and concentration of certain anions in the buffer, as well as specific point mutations in the protein. Until very recently, however, EPR has not been a practical technique for directly probing specific structures in which the solvent-exposed, exchangeable ligand is an O, OH?, H2O, SO32?, or SO42? group, because the primary O and S isotopes (16O and 32S) are magnetically silent (I = 0). This review focuses on the recent advances in the use of isotopic labeling, variable-frequency high resolution pulsed EPR spectroscopy, synthetic model compounds, and DFT calculations to elucidate the roles of various anions, point mutations, and steric factors in the formation, stabilization, and transformation of SOE active site structures.

Klein, Eric L.; Astashkin, Andrei V.; Raitsimring, Arnold; Enemark, John H.

2013-01-01T23:59:59.000Z

369

Magnetic burial and the harmonic content of millisecond oscillations in thermonuclear X-ray bursts  

E-Print Network [OSTI]

Matter accreting onto the magnetic poles of a neutron star spreads under gravity towards the magnetic equator, burying the polar magnetic field and compressing it into a narrow equatorial belt. Steady-state, Grad-Shafranov calculations with a self-consistent mass-flux distribution (and a semi-quantitative treatment of Ohmic diffusion) show that, for $\\Ma \\gtrsim 10^{-5}\\Msun$, the maximum field strength and latitudinal half-width of the equatorial magnetic belt are $B_{\\rm max} = 5.6\\times 10^{15} (\\Ma/10^{-4}\\Msun)^{0.32}$ G and $\\Delta\\theta = \\max[3^{\\circ} (\\Ma/10^{-4}\\Msun)^{-1.5},3^{\\circ} (\\Ma/10^{-4}\\Msun)^{0.5}(\\dot{M}_{\\rm a}/10^{-8}\\Msun {\\rm yr}^{-1})^{-0.5}]$ respectively, where $\\Ma$ is the total accreted mass and $\\dot{M}_{\\rm a}$ is the accretion rate. It is shown that the belt prevents north-south heat transport by conduction, convection, radiation, and ageostrophic shear. This may explain why millisecond oscillations observed in the tails of thermonuclear (type I) X-ray bursts in low-mass X-ray binaries are highly sinusoidal: the thermonuclear flame is sequestered in the magnetic hemisphere which ignites first. The model is also consistent with the occasional occurrence of closely spaced pairs of bursts. Time-dependent, ideal-magnetohydrodynamic simulations confirm that the equatorial belt is not disrupted by Parker and interchange instabilities.

D. J. B. Payne; A. Melatos

2006-07-11T23:59:59.000Z

370

Interview with Lucy Mair  

E-Print Network [OSTI]

relations so bad? Malinowski’s anti-Semitism Malinowski’s ideas, methods and role Were students then more mature? Raymond Firth, Edmund Leach (5 mins) Raymond Firth’s character and ideas Meyer Fortes and his dwindling socialism Edmund Leach as an eccentric... ) Did you enjoy teaching Colonial cadets and keep in touch with any of them? Visit to Nigeria and later trip to Nigeria Trip to Australia and New Guinea – impressions Sailing round the coast steered by a murderer Contrast with Africa Evans...

Mair, Lucy

2004-08-05T23:59:59.000Z

371

Non-OPEC oil supply continues to grow  

SciTech Connect (OSTI)

Global reserves of crude oil remain at 1 trillion bbl, according to OGJ`s annual survey of producing countries. Significant gains are in Brazil, Colombia, Congo, Egypt, Libya, Nigeria, Oman, and Papua New Guinea. Decreases were reported by Indonesia, Norway, the U.K., Iran, Canada, Mexico, and the US. Natural gas reserves slipped to 4.9 quadrillion cu ft. The major production trend is a lasting surge from outside of OPEC. This year`s Worldwide Production report begins with a detailed analysis of this crucial development by an international authority. This article discusses the OECD outlook by region and the turnaround in production in the former Soviet Union.

Knapp, D.H. [International Energy Agency, Paris (France)

1995-12-25T23:59:59.000Z

372

A toxological study of 3,6-BIS(3,5-Dimethyl-1-1-Pyrazolyl)1,2-Dihydro-1,2,4,5-Tetrazine  

SciTech Connect (OSTI)

The acute oral LD[sub 30/50] values for 3,6-BIS(3,5-Dimethyl-1-Pyrazolyl)-1,2-Dihydro-1,2,4,5-Tetrazine BIS(DMP)DHT are greater than 5g/kg. According to classical guidelines, the material would be considered only slightly toxic or practically nontoxic in both rats and mice. The sensitization study in the guinea pig did not show BIS(DMP)SHT to have potential sensitizing effects. Skin application studies on the rabbit demonstrated the material was cutaneously nonirritating. This material was also nonirritating in the rabbit eye application studies.

London, J.E.

1993-03-01T23:59:59.000Z

373

A toxological study of 3,6-BIS(3,5-Dimethyl-1-1-Pyrazolyl)1,2-Dihydro-1,2,4,5-Tetrazine  

SciTech Connect (OSTI)

The acute oral LD{sub 30/50} values for 3,6-BIS(3,5-Dimethyl-1-Pyrazolyl)-1,2-Dihydro-1,2,4,5-Tetrazine BIS(DMP)DHT are greater than 5g/kg. According to classical guidelines, the material would be considered only slightly toxic or practically nontoxic in both rats and mice. The sensitization study in the guinea pig did not show BIS(DMP)SHT to have potential sensitizing effects. Skin application studies on the rabbit demonstrated the material was cutaneously nonirritating. This material was also nonirritating in the rabbit eye application studies.

London, J.E.

1993-03-01T23:59:59.000Z

374

Podnahz  

E-Print Network [OSTI]

se" - a $2.50 guinea Pia: disguised a.e a ehinch1l1a ? A The oldest adolescent and his l etter jacket. e The efficient . buffalo gun. YOU'll see dayllght through the average criminal. J"1?D~ C The status symbol memoria 1 . fishing...-bean 50U\\ to raise tl ,mt e. Clam chowder. \\.]111 - cut a game of hide-and-seek short. - physique went to ourth season .. ----- ---- PODNAHZ Su.rsky & Hutch 6 The Sound of Distant Drums by Teri White fWith drums and guns And guns and drums...

Multiple Contributors

1996-01-01T23:59:59.000Z

375

Reverberation impairs brainstem temporal representations of voiced vowel sounds: challenging “periodicity-tagged” segregation of competing speech in rooms  

E-Print Network [OSTI]

surgery was performed under anesthesia. ANIMAL MODEL Data described here were collected during experiments per- formed on pigmented guinea-pigs of either sex, weighing between 300 and 650 g. Animals were anesthetized with ure- thane (1.0 g/kg, ip). Hypnorm... (fentanyl citrate, 0.315mg/ml; fluanisone, 10mg/ml; Janssen, High Wycombe, UK) was admin- istered for supplementary analgesia (1ml/kg, im). Anesthesia and analgesia were maintained at a depth sufficient to abol- ish the pedal withdrawal reflex (front paw...

Sayles, Mark; Stasiak, Arkadiusz; Winter, Ian M.

2015-01-12T23:59:59.000Z

376

An electron microscopy study of ground-nut poisoning in turkey poults  

E-Print Network [OSTI]

etiology. In the eat'Ly papers the condition was known by the name of Turkey ' X" disease. However, this name was quickly changed when in L961 Blount (7) concluded that toxic Brasilian ground-nut meal was responsible for the outbreaks of this new... condition. Similar toxic effects in ducklings, chickens, rats, guinea pigs, cows and pigs have also been reported. In general, there is little available information about how and where tbe toxic principles of any kind act in the cells structures. Also...

Martin, Alcides Amilcar

1963-01-01T23:59:59.000Z

377

Taxonomic revision and phylogeny of the genus Cetiocyon and its discovery in the Neotropical region (Insecta: Coleoptera: Hydrophilidae)  

E-Print Network [OSTI]

, resulting in the fi rst record of the genus in the Neotropical Region and recognition of eight species in New Guinea. One new species, Cetiocyon incantatus new species, is described from Suriname, and four new species from the central mountain range of New... to as ‘Gondwanan genera’ in recent papers (e.g., FIKÁ?EK 2007, 2010) and its monophyly is currently tested (ongoing work by M. Fiká?ek). In 2005, we discovered an aberrant specimen of Megasternini collected in Suriname. Although the spe- cies was clearly...

Fiká ?ek, Martin; Short, Andrew E. Z.

2010-03-11T23:59:59.000Z

378

Standard Practice for Irradiation of Fresh and Frozen Red Meat and Poultry to Control Pathogens and Other Microorganisms  

E-Print Network [OSTI]

1.1 This practice outlines procedures for the irradiation of fresh or frozen meat and poultry. Note 1—The Codex Alimentarius Commission defines meat as “the edible part of any mammal” and poultry as “any domesticated bird, including chicken, turkeys, ducks, geese, guinea-fowls, or pigeons” (CAC/MISC 5). Note 2—Current U.S. regulations limit the definition of livestock species to cattle, sheep, swine, goat, horse, mule, or other equine and poultry species to chicken, turkey, duck, goose, and guinea (2, 3). 1.2 This practice covers absorbed doses used for inactivation of parasites and reduction of bacterial load in fresh and frozen red meat and poultry. Such doses are typically less than 10 kGy. 1.3 This practice addresses irradiation of pre-packaged product for retail sale or for use as an ingredient in other products. It also addresses the in-line irradiation of unpackaged product. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It i...

American Society for Testing and Materials. Philadelphia

2008-01-01T23:59:59.000Z

379

Bipolar outflows as a repulsive gravitational phenomenon -- Azimuthally Symmetric Theory of Gravitation (II)  

E-Print Network [OSTI]

This paper is part of a series on the Azimuthally Symmetric Theory of Gravitation (ASTG) which is built on Laplace-Poisson's well known equation. We show herein that the emergent equations from the ASTG, under some critical conditions determined by the spin, do possess repulsive gravitational fields in the polar regions of the gravitating body in question. This places the ASTG on an interesting pedestal to infer the origins of outflows as a repulsive gravitational phenomenon. Outflows are a ubiquitous phenomenon found in star forming systems and their true origin is a question yet to be settled. Given the current thinking on their origin, the direction that the present paper takes is nothing short of an asymptotic break from conventional wisdom; at the very least, it is a complete paradigm shift because gravitation is not at all associated with this process, but rather it is thought to be an all-attractive force that only tries to squash matter together onto a single point. Additionally, we show that the emergent Azimuthally Symmetric Gravitational Field from the ASTG strongly suggests a solution to the supposed Radiation Problem that is thought to be faced by massive stars in their process of formation. That is, at about 8-10Msun radiation from the nascent star is expected to halt the accretion of matter. We show that in-falling material will fall onto the equatorial disk and from there, this material will be channeled onto the forming star via the equatorial plane, thus accretion of mass continues well past the value of about 8-10Msun, albeit via the disk. Along the equatorial plane, the net force (with the radiation force included) on any material there-on right up to the surface of the star is directed toward the forming star, hence accretion of mass by the nascent star is un-hampered.

G. G. Nyambuya

2010-10-18T23:59:59.000Z

380

Seyferts on the edge: polar scattering and orientation-dependent polarization in Seyfert 1 nuclei  

E-Print Network [OSTI]

We have identified 12 Seyfert 1 galaxies that exhibit optical polarization spectra similar to those of Seyfert 2 galaxies in which polarized broad-lines are detected. We present new spectropolarimetric observations of 3 of them: Was 45, Mrk 231 and NGC 3227. These objects appear to be polarized as a result of far-field scattering in the polar illumination cones of the circum-nuclear torus. We estimate that they represent between 10 and 30 per cent of the Seyfert 1 population; they are found amongst all the main spectroscopic sub-types, including narrow-line Seyfert 1 galaxies. We have shown elsewhere that Seyfert 1 nuclei more commonly have polarization characteristics that can be attributed to scattering by a compact 'equatorial' scattering region located inside the torus. We propose that both equatorial and polar scattering regions are present in all Seyfert galaxies and argue that the observed range of polarization properties can be broadly understood as an orientation effect. In this scheme, polar-scattered Seyfert 1 galaxies represent the transition between unobscured (the majority of type 1) and obscured (type 2) Seyferts. They are viewed through the upper layers of the torus and are thus subject to moderate extinction (Av ~1-4 mag) sufficient to suppress polarized light from the equatorial scattering region, but not the broad wings of the Balmer lines. The orientation of the polarization position angle relative to the radio source is broadly consistent with the two-component scattering model. More generally, we find that amongst Seyferts 1 galaxies, parallel, perpendicular and intermediate orientations of the polarization PA relative to the radio axis occur roughly in the proportions 2:1:1.

J. E. Smith; A. Robinson; D. M. Alexander; S. Young; D. J. Axon; Elizabeth A. Corbett

2004-01-23T23:59:59.000Z

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

String loops in the field of braneworld spherically symmetric black holes and naked singularities  

SciTech Connect (OSTI)

We study motion of current-carrying string loops in the field of braneworld spherically symmetric black holes and naked singularities. The spacetime is described by the Reissner-Nordström geometry with tidal charge b reflecting the non-local tidal effects coming from the external dimension; both positive and negative values of the spacetime parameter b are considered. We restrict attention to the axisymmetric motion of string loops when the motion can be fully governed by an appropriately defined effective potential related to the energy and angular momentum of the string loops. In dependence on these two constants of the motion, the string loops can be captured, trapped, or can escape to infinity. In close vicinity of stable equilibrium points at the centre of trapped states the motion is regular. We describe how it is transformed to chaotic motion with growing energy of the string loop. In the field of naked singularities the trapped states located off the equatorial plane of the system exist and trajectories unable to cross the equatorial plane occur, contrary to the trajectories in the field of black holes where crossing the equatorial plane is always admitted. We concentrate our attention to the so called transmutation effect when the string loops are accelerated in the deep gravitational field near the black hole or naked singularity by transforming the oscillatory energy to the energy of the transitional motion. We demonstrate that the influence of the tidal charge can be substantial especially in the naked singularity spacetimes with b > 1 where the acceleration to ultrarelativistic velocities with Lorentz factor ? ? 100 can be reached, being more than one order higher in comparison with those obtained in the black hole spacetimes.

Stuchlík, Z.; Kološ, M., E-mail: zdenek.stuchlik@fpf.slu.cz, E-mail: martin.kolos@fpf.slu.cz [Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezru?ovo nám.13, CZ-74601 Opava (Czech Republic)

2012-10-01T23:59:59.000Z

382

Particle acceleration by Majumdar-Papapetrou di-hole  

E-Print Network [OSTI]

We explore the multi-black hole spacetimes from the perspective of the ultra-high energy particle collisions. Such a discussion is limited to the spacetimes containing a single black hole so far. We deal with the Majumdar-Papapetrou solution representing a system consisting of two identical black holes in the equilibrium. In order to identify the conditions suitable for the process of high energy collisions, we consider particles confined to move on the equatorial plane towards the axis of symmetry with the zero angular momentum. We consider collision between the particles moving in opposite directions at the location midway between the black holes on the axis. We show that the center of mass energy of collision between the particles increases with the decrease in the separation between the black holes and shows divergence in the limit where the separation goes to zero. We estimate the size of the region close to the central point on the equatorial plane where it would be possible to have high energy collisions and show that this region has a reasonably large spatial extent. We further explore the process of high energy collisions with the general geodesics with arbitrary angular momentum on the equatorial plane away from the central point. Although in this paper we deal with theMajumdar-Papapetrou spacetime which serves as a toy example representing multiple black holes, we speculate on the possibility that the ultra-high energy collisions would also occur in the more general setting like colliding black holes, when distance between the black holes is extremely small, which can in principle be verified in the numerical relativity simulations.

Mandar Patil; Pankaj S. Joshi

2014-09-03T23:59:59.000Z

383

Formation and Sustainment of ITPs in ITER with the Baseline Heating Mix  

SciTech Connect (OSTI)

Plasmas with internal transport barriers (ITBs) are a potential and attractive route to steady-state operation in ITER. These plasmas exhibit radially localized regions of improved con nement with steep pressure gradients in the plasma core, which drive large bootstrap current and generate hollow current pro les and negative shear. This work examines the formation and sustainment of ITBs in ITER with electron cyclotron heating and current drive. It is shown that, with a trade-o of the power delivered to the equatorial and to the upper launcher, the sustainment of steady-state ITBs can be demonstrated in ITER with the baseline heating con guration.

Francesca M. Poli and Charles Kessel

2012-12-03T23:59:59.000Z

384

The Dark Energy Survey: Prospects for Resolved Stellar Populations  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Wide angle and deep surveys, regardless of their primary purpose, always sample a large number of stars in the Galaxy and in its satellite system. We here make a forecast of the expected stellar sample resulting from the Dark Energy Survey and the perspectives that it will open for studies of Galactic structure and resolved stellar populations in general. An estimated 1.2 x 10{sup 8} stars will be sampled in DES grizY filters in the southern equatorial hemisphere. This roughly corresponds to 20% of all DES sources. Most of these stars belong to the stellar thick disk and halo of the Galaxy.

Rossetto, Bruno M [Rio de Janeiro Observ.; Santiago, Basilio X [Rio Grande do Sul U.; Rio de Janeiro Observ.; Girardi, Leo [Padua Observ.; Rio de Janeiro Observ.; Camargo, Julio I.B. [Rio de Janeiro Observ.; Balbinot, Eduardo [Rio Grande do Sul U.; Rio de Janeiro Observ.; da Costa, Luiz N [Rio de Janeiro Observ.; Yanny, Brian [Fermilab; Maia, Marcio A.G. [Rio de Janeiro Observ.; Makler, Martin [Rio de Janeiro, CBPF; Rio de Janeiro Observ.; Ogando, Ricardo L.C. [Rio de Janeiro Observ.; Pellegrini, Paulo S [Rio de Janeiro Observ.; Rio de Janeiro Observ.

2011-05-06T23:59:59.000Z

385

Silicon avalanche photodiode operation and lifetime analysis for small satellites  

E-Print Network [OSTI]

Silicon avalanche photodiodes (APDs) are sensitive to operating temperature fluctuations and are also susceptible to radiation flux expected in satellite-based quantum experiments. We introduce a low power voltage adjusting mechanism to overcome the effects of in-orbit temperature fluctuations. We also present data on the performance of Si APDs after irradiation (gamma-ray and proton beam). Combined with an analysis of expected orbital irradiation, we propose that a Si APD in a 400 km equatorial orbit may operate beyond the lifetime of the satellite.

Tan, Yue Chuan; Cheng, Cliff; Ling, Alexander

2013-01-01T23:59:59.000Z

386

Silicon avalanche photodiode operation and lifetime analysis for small satellites  

E-Print Network [OSTI]

Silicon avalanche photodiodes (APDs) are sensitive to operating temperature fluctuations and are also susceptible to radiation flux expected in satellite-based quantum experiments. We introduce a low power voltage adjusting mechanism to overcome the effects of in-orbit temperature fluctuations. We also present data on the performance of Si APDs after irradiation (gamma-ray and proton beam). Combined with an analysis of expected orbital irradiation, we propose that a Si APD in a 400 km equatorial orbit may operate beyond the lifetime of the satellite.

Yue Chuan Tan; Rakhitha Chandrasekara; Cliff Cheng; Alexander Ling

2013-06-28T23:59:59.000Z

387

Electromagnetic Analysis For The Design Of ITER Diagnostic Port Plugs During Plasma Disruptions  

SciTech Connect (OSTI)

ITER diagnostic port plugs perform many functions including structural support of diagnostic systems under high electromagnetic loads while allowing for diagnostic access to plasma. The design of diagnotic equatorial port plugs (EPP) are largely driven by electromagnetic loads and associate response of EPP structure during plasma disruptions and VDEs. This paper summarizes results of transient electromagnetic analysis using Opera 3d in support of the design activities for ITER diagnostic EPP. A complete distribution of disruption loads on the Diagnostic First Walls (DFWs). Diagnostic Shield Modules (DSMs) and the EPP structure, as well as impact on the system design integration due to electrical contact among various EPP structural components are discussed.

Zhai, Y

2014-03-03T23:59:59.000Z

388

Tracers for monitoring the activity of sodium/glucose cotransporters in health and disease  

DOE Patents [OSTI]

Radiolabeled tracers for sodium/glucose cotransporters (SGLTs), their synthesis, and their use are provided. The tracers are methyl or ethyl pyranosides having an equatorial hydroxyl group at carbon-2 and a C 1 preferred conformation, radiolabeled with .sup.18F, .sup.123I, or .sup.124I, or free hexoses radiolabeled with .sup.18F, .sup.123I, or .sup.124. Also provided are in vivo and in vitro techniques for using these and other tracers as analytical and diagnostic tools to study glucose transport, in health and disease, and to evaluate therapeutic interventions.

Wright, Ernest M; Barrio, Jorge R; Hirayama, Bruce A; Kepe, Vladimir

2014-09-30T23:59:59.000Z

389

Rapid transport of East Asian pollution to the deep tropics  

E-Print Network [OSTI]

, and biomass burning in tropical continental Southeast Asia: observations in rural Thai- land, J. Geophys. Res.-Atmos., 108, 4552, doi:10.1029/2002JD003360, 2003. 30708 Pyle, J. A., Ashfold, M. J., Harris, N. R. P., Robinson, A. D., Warwick, N. J., Carver, G. D... mid-latitudes rapidly to equatorial Southeast Asia.15 4 Wider air quality implications Thus far we have focussed on C2Cl4, an industrial pollutant observed in relatively small quantities. It is clearly of interest to consider how this pollution...

Ashfold, M. J.; Pyle, J. A.; Robinson, A. D.; Nadzir, M. S. M.; Phang, S. M.; Samah, A. A.; Ong, S.; Ung, H. E.; Peng, L. K.; Yong, S. E.; Harris, N. R. P.

2014-12-05T23:59:59.000Z

390

Variation of surface currents and effects on dispersion in the Tropical Pacific Ocean  

E-Print Network [OSTI]

(Tabata, 197 5) North Ecuatorial Countercurrent The North Ecuatorial Countercurrent flows eastward against the wind between 4'N laf. and 10'N lat. across the entire Pacific transporting warm water from west to east. The flow is in approximate... at which data was taken. A solution. is to use the variance of the ship drifts in con- junction with a correlation coefficient from another source. As an example R(t) from a driftez released in the Northern Equatorial Countercurrent with a track between...

Horne, Doyle Jackson

1980-01-01T23:59:59.000Z

391

Mechanical and Electrical Systems for the Tallest Building/Man-Made Structure in the World: A Burj Dubai Case Study  

E-Print Network [OSTI]

of the Persian Gulf. Its location coincides with the northern edge of the earth’s equatorial region, an area influenced by so-called trade wind patterns. The climate is classified as arid sub-tropical and is characterized by average diurnal temperature... for variable speed fan coil unit is included in the project. Chilled water pumps and air handling unit, where possible, are equipped with variable speed drives. Photovoltaic paneling was considered to be placed on the spire to provide electricity; however...

Frechette, R.; Leung, L.; Boyer, J.

2006-01-01T23:59:59.000Z

392

Major shifts in calcareous phytoplankton assemblages through the Eocene-Oligocene transition of Tanzania and their implications for low-latitude primary production  

E-Print Network [OSTI]

in the deep sea, significant glaciomarine sedimen- tation commences around the margins of both East and West Antarctica indicating the first Cenozoic advance of conti- nental-scale ice sheets in southern high latitudes [Breza and Wise, 1992; Ivany et al., 2006... patterns. In low south- ern latitudes the present-day western boundary of the Indian Ocean is dominated by the northward flowing East African Coastal Current (EACC), which is sourced from the west- ward flowing South Equatorial Current (SEC) [Swallow et al...

Jones, Tom Dunkley; Bown, Paul R.; Pearson, Paul N.; Wade, Bridget S.; Coxall, Helen K.; Lear, Caroline H.

393

High-resolution tangential absolute extreme ultraviolet arrays for radiated power density measurements on NSTX-U  

SciTech Connect (OSTI)

The radiated-power-density diagnostic on the equatorial midplane for the NSTX-U tokamak will be upgraded to measure the radial structure of the photon emissivity profile with an improved radial resolution. This diagnostic will enhance the characterization and studies of power balance, impurity transport, and MHD. The layout and response expected of the new system is shown for different plasma conditions and impurity concentrations. The effect of toroidal rotation driving poloidal asymmetries in the core radiation from high-Z impurities is also addressed.

Delgado-Aparicio, L.; Bell, R. E.; Diallo, A.; Gerhardt, S. P.; Kozub, T. A.; LeBlanc, B. P.; Stratton, B. C. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540 (United States); Faust, I. [MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139 (United States); Tritz, K. [The Johns Hopkins University, Baltimore, Maryland 21209 (United States)

2014-11-15T23:59:59.000Z

394

Small mass plunging into a Kerr black hole: Anatomy of the inspiral-merger-ringdown waveforms  

E-Print Network [OSTI]

We numerically solve the Teukolsky equation in the time domain to obtain the gravitational-wave emission of a small mass inspiraling and plunging into the equatorial plane of a Kerr black hole. We account for the dissipation of orbital energy using the Teukolsky frequency-domain gravitational-wave fluxes for circular, equatorial orbits, down to the light-ring. We consider Kerr spins $-0.99 \\leq q \\leq 0.99$, and compute the inspiral-merger-ringdown (2,2), (2,1), (3,3), (3,2), (4,4), and (5,5) modes. We study the large-spin regime, and find a great simplicity in the merger waveforms, thanks to the extremely circular character of the plunging orbits. We also quantitatively examine the mixing of quasinormal modes during the ringdown, which induces complicated amplitude and frequency modulations in the waveforms. Finally, we explain how the study of small mass-ratio black-hole binaries helps extending effective-one-body models for comparable-mass, spinning black-hole binaries to any mass ratio and spin magnitude.

Andrea Taracchini; Alessandra Buonanno; Gaurav Khanna; Scott A. Hughes

2014-04-07T23:59:59.000Z

395

Light defection due to a charged, rotating body  

E-Print Network [OSTI]

According to GTR and subsequent developments in the field, it is known that there are three factors namely mass, rotation and charge that can influence the space-time geometry. Accordingly, we discuss the effect of space-time geometry of a charged, rotating body on the motion of the light ray. We obtained the expression for equatorial defection of light due to such a body up to fourth order term. In our expression for defection angle it is clear that charge can influence the path of light ray. We used the null geodesic approach of light ray for our calculation. If we set the charge to zero our expression of bending angle gets reduced to the Kerr equatorial bending angle.If we set rotation to zero our expression reduces to Resinner-Nordstr$\\ddot{o}$m defection angle and if we set both charge and rotation to zero our expression reduces to Schwarzschild bending angle. However, we get non-zero bending angle for a hypothetical massless, rotating, charged body.

Sarani Chakraborty; A. K. Sen

2014-06-05T23:59:59.000Z

396

Radar Imaging and Characterization of Binary Near-Earth Asteroid (185851) 2000 DP107  

E-Print Network [OSTI]

Potentially hazardous asteroid (185851) 2000 DP107 was the first binary near-Earth asteroid to be imaged. Radar observations in 2000 provided images at 75 m resolution that revealed the shape, orbit, and spin-up formation mechanism of the binary. The asteroid made a more favorable flyby of the Earth in 2008, yielding images at 30 m resolution. We used these data to obtain shape models for the two components and to improve the estimates of the mutual orbit, component masses, and spin periods. The primary has a sidereal spin period of 2.7745 +/- 0.0007 h and is roughly spheroidal with an equivalent diameter of 863 m +/- 5%. It has a mass of 4.656 +/- 0.56 x 10^11 kg and a density of 1381 +/- 268 kg/m^3. It exhibits an equatorial ridge similar to the (66391) 1999 KW4 primary, however the equatorial ridge in this case is not as regular and has a ~300 m diameter concavity on one side. The secondary has a sidereal spin period of 1.77 +/- 0.02 days commensurate with the orbital period. The secondary is slightly elon...

Naidu, Shantanu P; Taylor, Patrick A; Nolan, Michael C; Busch, Michael W; Benner, Lance A M; Brozovic, Marina; Giorgini, Jon D; Jao, Joseph S; Magri, Chris

2015-01-01T23:59:59.000Z

397

A Spectropolarimetric Atlas of Seyfert 1 Galaxies  

E-Print Network [OSTI]

We present optical spectropolarimetry of the nuclei of 36 Seyfert 1 galaxies, obtained with the William Herschel and the Anglo-Australian Telescopes from 1996 to 1999. In 20 of these, the optical emission from the active nucleus is intrinsically polarized. We have measured a significant level of polarization in a further 7 objects but these may be heavily contaminated by Galactic interstellar polarization. The intrinsically polarized Seyfert 1s exhibit a variety of characteristics, with the average polarization ranging from < 0.5 to 5 per cent and many showing variations in both the degree and position angle of polarization across the broad H alpha emission line. We identify a small group of Seyfert 1s that exhibit polarization properties similar to those of Seyfert 2 galaxies in which polarized broad-lines have been discovered. These objects represent direct observational evidence that a Seyfert 2-like far-field polar scattering region is also present in Seyfert 1s. Several other objects have features that can be explained in terms of equatorial scattering of line emission from a rotating disk. We propose that much of the diversity in the polarization properties of Seyfert galaxies can be understood in terms of a model involving both equatorial and polar scattering, the relative importance of the two geometries as sources of polarized light being determined principally by the inclination of the system axis to the line-of-sight.

J. E. Smith; S. Young; A. Robinson; E. A. Corbett; M. E. Giannuzzo; D. J. Axon; J. H. Hough

2002-05-14T23:59:59.000Z

398

Sun's retrograde motion and violation of even-odd cycle rule in sunspot activity  

E-Print Network [OSTI]

The sum of sunspots number over an odd numbered 11 yr sunspot cycle exceeds that of its preceding even numbered cycle, and it is well known as Gnevyshev and Ohl rule (or G--O rule) after the names of the authors who discovered it in 1948. The G--O rule can be used to predict the sum of sunspot numbers of a forthcoming odd cycle from that of its preceding even cycle. But this is not always possible because occasionally the G--O rule is violated. So far no plausible reason is known either for the G--O rule or the violation of this rule. Here we showed the epochs of the violation of the G--O rule are close to the epochs of the Sun's retrograde orbital motion about the centre of mass of the solar system (i.e., the epochs at which the orbital angular momentum of the Sun is weakly negative). Using this result easy to predict the epochs of violation of the G--O rule well in advance. We also showed that the solar equatorial rotation rate determined from sunspot group data during the period 1879--2004 is correlated/anti-correlated to the Sun's orbital torque during before/after 1945. We have found the existence of a statistically significant $\\sim$ 17 yr periodicity in the solar equatorial rotation rate. The implications of these findings for understanding the mechanism behind the solar cycle and the solar-terrestrial relationship are discussed.

J. Javaraiah

2005-07-12T23:59:59.000Z

399

The Defect Induced Mix Experiment (DIME) for NIF  

SciTech Connect (OSTI)

LANL will perform two Defect Induced Mix Experiment (DIME) implosion campaigns on NIF in July and September, 2012. This presentation describes the goals for these shots and the experimental configuration and diagnostic set up to collect the appropriate data. The first two-shot campaign will focus on executing polar direct drive (PDD) implosions of plastic CH capsules filled with deuterium gas. Gas filling will be performed through a fill tube at target chamber center. A vanadium backligher foil will provide x-rays to radiograph the last half of the implosion to compare the implosion trajectory with modeling predictions. An equatorial groove in one of the capsules will be present to determine its effect on implosion dynamics. The second DIME campaign will commission and use a spectral imager (MMI) to examine the evolution of thin capsule layers doped with either Ge or Ga at 1.85%. Spectral line emission from these layers will quantify the mix width at the inner shell radius and near an equatorial groove feature.

Schmitt, Mark J [Los Alamos National Laboratory; Bradley, Paul A [Los Alamos National Laboratory; Cobble, James A [Los Alamos National Laboratory; Hakel, Peter [Los Alamos National Laboratory; Hsu, Scott C [Los Alamos National Laboratory; Krasheninnikova, Natalia S [Los Alamos National Laboratory; Kyrala, George A [Los Alamos National Laboratory; Murphy, Thomas J [Los Alamos National Laboratory; Obrey, Kimberly A [Los Alamos National Laboratory; Shah, Rahul C [Los Alamos National Laboratory; Tregillis, Ian L [Los Alamos National Laboratory

2012-06-18T23:59:59.000Z

400

Mapping High-velocity H-alpha and Lyman-alpha Emission from Supernova 1987A  

E-Print Network [OSTI]

We present new {\\it Hubble Space Telescope} images of high-velocity H-$\\alpha$ and Lyman-$\\alpha$ emission in the outer debris of SN~1987A. The H-$\\alpha$ images are dominated by emission from hydrogen atoms crossing the reverse shock. For the first time we observe emission from the reverse shock surface well above and below the equatorial ring, suggesting a bipolar or conical structure perpendicular to the ring plane. Using the H$\\alpha$ imaging, we measure the mass flux of hydrogen atoms crossing the reverse shock front, in the velocity intervals ($-$7,500~$<$~$V_{obs}$~$<$~$-$2,800 km s$^{-1}$) and (1,000~$<$~$V_{obs}$~$<$~7,500 km s$^{-1}$), $\\dot{M_{H}}$ = 1.2~$\\times$~10$^{-3}$ M$_{\\odot}$ yr$^{-1}$. We also present the first Lyman-$\\alpha$ imaging of the whole remnant and new $Chandra$ X-ray observations. Comparing the spatial distribution of the Lyman-$\\alpha$ and X-ray emission, we observe that the majority of the high-velocity Lyman-$\\alpha$ emission originates interior to the equatorial...

France, Kevin; Fransson, Claes; Larsson, Josefin; Frank, Kari A; Burrows, David N; Challis, Peter; Kirshner, Robert P; Chevalier, Roger A; Garnavich, Peter; Heng, Kevin; Lawrence, Stephen S; Lundqvist, Peter; Smith, Nathan; Sonneborn, George

2015-01-01T23:59:59.000Z

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401

Comparative Analysis of GALLEX-GNO Solar Neutrino Data and SOHO/MDI Helioseismology Data; Further Evidence for Rotational Modulation of the Solar Neutrino Flux  

E-Print Network [OSTI]

We carry out a comparative analysis of the GALLEX-GNO solar neutrino data and estimates of the solar internal rotation rate derived from the MDI helioseismology experiment on the SOHO spacecraft. We introduce a statistic, which we evaluate as a function of radius and latitude, that is a measure of the degree of "resonance" of oscillations in the neutrino flux and the synodic solar rotation rate at that radius and latitude. A map of this statistic indicates that the probable location is deep in the convection zone near the equator. We also examine the integral of this statistic over the equatorial section of the convection zone. This provides a measure of the likelihood that the variability of the solar neutrino flux, as measured by the GALLEX-GNO data, has its origin in the equatorial section of the convection zone. We apply the shuffle test, randomly reassigning measurements among runs, to estimate the significance of the value of the statistic computed from the actual data. This test implies that the result is significant at the 0.2% level. When, for comparison, we repeat this analysis for the radiative zone, we find that the integral resonance statistic is not significant. These results support earlier evidence for rotational modulation of the solar neutrino flux.

Peter A. Sturrock; Mark A. Weber

2001-03-10T23:59:59.000Z

402

On the 27-day Variations of Cosmic Ray Intensity in Recent Solar Minimum 23/24  

E-Print Network [OSTI]

We have studied the 27-day variations and their harmonics of the galactic cosmic ray (GCR) intensity, solar wind velocity, and interplanetary magnetic field (IMF) components in the recent prolonged solar minimum 23 24. The time evolution of the quasi-periodicity in these parameters connected with the Suns rotation reveals that their synodic period is stable and is aprox 26-27 days. This means that the changes in the solar wind speed and IMF are related to the Suns near equatorial regions in considering the differential rotation of the Sun. However, the solar wind parameters observed near the Earths orbit provide only the conditions in the limited local vicinity of the equatorial region in the heliosphere (within in latitude). We also demonstrate that the observed period of the GCR intensity connected with the Suns rotation increased up to aprox 33-36 days in 2009. This means that the process driving the 27-day variations of the GCR intensity takes place not only in the limited local surroundings of the equato...

Modzelewska, R

2015-01-01T23:59:59.000Z

403

A method to discriminate solar and antisolar differential rotation in high-precision light curves  

E-Print Network [OSTI]

Surface differential rotation (DR) is one major ingredient of the magnetic field generation process in the Sun and likely in other stars. The term solar-like differential rotation describes the observation that solar equatorial regions rotate faster than polar ones. The opposite effect of polar regions rotating faster than equatorial ones (termed as antisolar DR) has only been observed in a few stars, although there is evidence from theoretical dynamo models. We present a new method to detect the sign of DR (i.e. solar-like or antisolar DR) by analyzing long-term high-precision light curves with the Lomb-Scargle periodogram.We compute the Lomb-Scargle periodogram and identify a set of significant periods $P_k$, which we associate with active regions located at different latitudes on the the stellar surface. If detectable, the first harmonics ($P_k'$) of these periods were identified to compute their peak-height-ratios $r_k:=h(P_k')/h(P_k)$. Spots rotating at lower latitudes generate less sine-shaped light cur...

Reinhold, T

2015-01-01T23:59:59.000Z

404

Structure of hydrophobic hydration of benzene and hexafluorobenzene from first principles  

SciTech Connect (OSTI)

We report on the aqueous hydration of benzene and hexafluorobenzene, as obtained by carrying out extensive (>100 ps) first principles molecular dynamics simulations. Our results show that benzene and hexafluorobenzene do not behave as ordinary hydrophobic solutes, but rather present two distinct regions, one equatorial and the other axial, that exhibit different solvation properties. While in both cases the equatorial regions behave as typical hydrophobic solutes, the solvation properties of the axial regions depend strongly on the nature of the {pi}-water interaction. In particular, {pi}-hydrogen and {pi}-lone pair interactions are found to dominate in benzene and hexafluorobenzene, respectively, which leads to substantially different orientations of water near the two solutes. We present atomic and electronic structure results (in terms of Maximally Localized Wannier Functions) providing a microscopic description of benzene- and hexafluorobenzene-water interfaces, as well as a comparative study of the two solutes. Our results point at the importance of an accurate description of interfacial water in order to characterize hydration properties of apolar molecules, as these are strongly influenced by subtle charge rearrangements and dipole moment redistributions in interfacial regions.

Allesch, M; Schwegler, E; Galli, G

2006-10-23T23:59:59.000Z

405

Electronic structure analysis and properties of Sr{sub 2}CeO{sub 4} grown by sol–gel method  

SciTech Connect (OSTI)

Highlights: ? Sr{sub 2}CeO{sub 4} nanopowders were obtained by sol–gel method. ? SEM/EDX imaging and chemical analysis have been done. ? XPS electronic structure was examined and discussed. ? The terminal and equatorial Ce-O bonds contributions were determined in O2p states. ? The energy gap was estimated by valence band and electrical measurements. -- Abstract: Sr{sub 2}CeO{sub 4} is a very promising material due to its various industrial applications, e.g. for the construction of field emission displays and light emitting diodes. In this work, the phosphor was synthesized by the sol–gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS) methods. They proved to be very good structural properties of the material and identified negligible impurities from the technological process. The decomposition of the surface of the nanocrystals was found but this did not decrease the spectral features of the compound. The analysis of the XPS O2p lines revealed contributions of two kinds of bonds: terminal and equatorial ones, in the ratio of 2/4. They are separated by 1.2 eV what is in agreement with the observed absorption spectra. A presence of the decomposed layers may produce asymmetric widening of the emission spectra towards a lower energy.

Talik, E., E-mail: talik@us.edu.pl [Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland); Lipi?ska, L. [Institute of Electronic Materials Technology, ul. Wólczy?ska 133, 01-919 Warszawa (Poland)] [Institute of Electronic Materials Technology, ul. Wólczy?ska 133, 01-919 Warszawa (Poland); Skrzypek, D. [Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland)] [Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland); Skuta, A. [Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland) [Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland); Institute of Electronic Materials Technology, ul. Wólczy?ska 133, 01-919 Warszawa (Poland); Zajdel, P.; Guzik, A.; Duda, H. [Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland)] [Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice (Poland)

2012-11-15T23:59:59.000Z

406

Rings and Jets around PSR J2021+3651: the `Dragonfly Nebula'  

E-Print Network [OSTI]

We describe recent Chandra ACIS observations of the Vela-like pulsar PSR J2021+3651 and its pulsar wind nebula (PWN). This `Dragonfly Nebula' displays an axisymmetric morphology, with bright inner jets, a double-ridged inner nebula, and a ~30" polar jet. The PWN is embedded in faint diffuse emission: a bow shock-like structure with standoff ~1' brackets the pulsar to the east and emission trails off westward for 3-4'. Thermal (kT=0.16 +/-0.02 keV) and power law emission are detected from the pulsar. The nebular X-rays show spectral steepening from Gamma=1.5 in the equatorial torus to Gamma=1.9 in the outer nebula, suggesting synchrotron burn-off. A fit to the `Dragonfly' structure suggests a large (86 +/-1 degree) inclination with a double equatorial torus. Vela is currently the only other PWN showing such double structure. The >12 kpc distance implied by the pulsar dispersion measure is not supported by the X-ray data; spectral, scale and efficiency arguments suggest a more modest 3-4 kpc.

Adam Van Etten; Roger W. Romani; C. -Y. Ng

2008-02-25T23:59:59.000Z

407

ITER Diagnostic First Wal  

SciTech Connect (OSTI)

The ITER Diagnostic Division is responsible for designing and procuring the First Wall Blankets that are mounted on the vacuum vessel port plugs at both the upper and equatorial levels This paper will discuss the effects of the diagnostic aperture shape and configuration on the coolant circuit design. The DFW design is driven in large part by the need to conform the coolant arrangement to a wide variety of diagnostic apertures combined with the more severe heating conditions at the surface facing the plasma, the first wall. At the first wall, a radiant heat flux of 35W/cm2 combines with approximate peak volumetric heating rates of 8W/cm3 (equatorial ports) and 5W/cm3 (upper ports). Here at the FW, a fast thermal response is desirable and leads to a thin element between the heat flux and coolant. This requirement is opposed by the wish for a thicker FW element to accommodate surface erosion and other off-normal plasma events.

G. Douglas Loesser, et. al.

2012-09-21T23:59:59.000Z

408

Preliminary toxicology study of 3,6-diamino-1,2,4,5-tetrazine  

SciTech Connect (OSTI)

The calculated acute oral LD 30/50 (lethal dose for 50% of the animals occurring within 30 days after compound administration) value for 3,6-diamino-1,2,4,5-tetrazine (DATZ) was 863 mg/kg in rats. According to classical guidelines, DATZ would be considered slightly to moderately toxic for rats. The calculated acute oral LD [sub 30/50] value was 2,288 mg/kg in mice and would be considered slightly to moderately toxic for mice. Skin application studies using rabbits demonstrated DATZ to be a nonirritant. The eye study using rabbits disclosed DATZ to be a very mild irritant. The sensitization study using guinea pigs did not show DATZ to have potential sensitizing properties.

London, J.E.

1993-03-01T23:59:59.000Z

409

Preliminary toxicology study of 3,6-diamino-1,2,4,5-tetrazine  

SciTech Connect (OSTI)

The calculated acute oral LD 30/50 (lethal dose for 50% of the animals occurring within 30 days after compound administration) value for 3,6-diamino-1,2,4,5-tetrazine (DATZ) was 863 mg/kg in rats. According to classical guidelines, DATZ would be considered slightly to moderately toxic for rats. The calculated acute oral LD {sub 30/50} value was 2,288 mg/kg in mice and would be considered slightly to moderately toxic for mice. Skin application studies using rabbits demonstrated DATZ to be a nonirritant. The eye study using rabbits disclosed DATZ to be a very mild irritant. The sensitization study using guinea pigs did not show DATZ to have potential sensitizing properties.

London, J.E.

1993-03-01T23:59:59.000Z

410

Hazardous waste management in the Pacific basin  

SciTech Connect (OSTI)

Hazardous waste control activities in Asia and the Pacific have been reviewed. The review includes China (mainland, Hong Kong, and Taiwan), Indonesia, Korea, Malaysia, Papua New Guinea, the Philippines, Singapore, and Thailand. It covers the sources of hazardous waste, the government structure for dealing with hazardous waste, and current hazardous waste control activities in each country. In addition, the hazardous waste program activities of US government agencies, US private-sector organizations, and international organizations are reviewed. The objective of these reviews is to provide a comprehensive picture of the current hazardous waste problems and the waste management approaches being used to address them so that new program activities can be designed more efficiently.

Cirillo, R.R.; Chiu, S.; Chun, K.C.; Conzelmann, G. [Argonne National Lab., IL (United States); Carpenter, R.A.; Indriyanto, S.H. [East-West Center, Honolulu, HI (United States)

1994-11-01T23:59:59.000Z

411

Tokamak reactor for treating fertile material or waste nuclear by-products  

DOE Patents [OSTI]

Disclosed is a tokamak reactor. The reactor includes a first toroidal chamber, current carrying conductors, at least one divertor plate within the first toroidal chamber and a second chamber adjacent to the first toroidal chamber surrounded by a section that insulates the reactor from neutrons. The current carrying conductors are configured to confine a core plasma within enclosed walls of the first toroidal chamber such that the core plasma has an elongation of 1.5 to 4 and produce within the first toroidal chamber at least one stagnation point at a perpendicular distance from an equatorial plane through the core plasma that is greater than the plasma minor radius. The at least one divertor plate and current carrying conductors are configured relative to one another such that the current carrying conductors expand the open magnetic field lines at the divertor plate.

Kotschenreuther, Michael T.; Mahajan, Swadesh M.; Valanju, Prashant M.

2012-10-02T23:59:59.000Z

412

MAGNETOHYDRODYNAMIC SHALLOW WATER WAVES: LINEAR ANALYSIS  

SciTech Connect (OSTI)

We present a linear analysis of inviscid, incompressible, magnetohydrodynamic (MHD) shallow water systems. In spherical geometry, a generic property of such systems is the existence of five wave modes. Three of them (two magneto-Poincare modes and one magneto-Rossby mode) are previously known. The other two wave modes are strongly influenced by the magnetic field and rotation, and have substantially lower angular frequencies; as such, we term them 'magnetostrophic modes'. We obtain analytical functions for the velocity, height, and magnetic field perturbations in the limit that the magnitude of the MHD analogue of Lamb's parameter is large. On a sphere, the magnetostrophic modes reside near the poles, while the other modes are equatorially confined. Magnetostrophic modes may be an ingredient in explaining the frequency drifts observed in Type I X-ray bursts from neutron stars.

Heng, Kevin [Institute for Advanced Study, School of Natural Sciences, Einstein Drive, Princeton, NJ 08540 (United States); Spitkovsky, Anatoly, E-mail: heng@ias.ed, E-mail: anatoly@astro.princeton.ed [Department of Astrophysical Sciences, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States)

2009-10-01T23:59:59.000Z

413

Optical reference geometry of the Kerr-Newman spacetimes  

E-Print Network [OSTI]

Properties of the optical reference geometry related to Kerr-Newman black-hole and naked-singularity spacetimes are illustrated using embedding diagrams of their equatorial plane. Among all inertial forces defined in the framework of the optical geometry, just the centrifugal force plays a fundamental role in connection to the embedding diagrams because it changes sign at the turning points of the diagrams. The limits of embeddability are given, and it is established which of the photon circular orbits hosted the by Kerr-Newman spacetimes appear in the embeddable regions. Some typical embedding diagrams are constructed, and the Kerr-Newman backgrounds are classified according to the number of embeddable regions of the optical geometry as well as the number of their turning points. Embedding diagrams are closely related to the notion of the radius of gyration which is useful for analyzing fluid rotating in strong gravitational fields.

Zden?k Stuchlík; Stanislav Hledík; Josef Jurá?

2008-03-17T23:59:59.000Z

414

Status of ECRH project on EAST Tokamak  

SciTech Connect (OSTI)

A 140GHz electron cyclotron resonance heating and current drive (EC H and CD) project for EAST Tokamak is launched in 2011 with a total power of 4MW and pulse length of 100 s. The main objectives of the system are to provide central H and CD, assist start-up and control of MHD activities. The system comprises four gyrotrons each with nominal output power of 1MW at 140GHz. The RF power, transmitted through four evacuated corrugated waveguides will be injected into plasma from the low field side (radial port). The front steering equatorial launcher directs the RF beam over ±25° toroidally and scans over 38° poloidally. At present, the construction of the first 1MW system is undergoing for the expected campaign in the end of 2013. In this paper, the current status of the development and the design of the 140-GHz ECRH system are presented.

Wang, Xiaojie; Liu, Fukun; Shan, Jiafang; Xu, Handong; Wu, Dajun; Li, Bo; Zhang, Jiang; Huang, Yiyun; Tang, Yunying; Xu, Weiye; Hu, Huaichuan; Wang, Jian; Xu, Li [Institute of Plasma Physics Chinese Academy of Sciences, Hefei (China); Wei, Wei [Institute of Plasma Physics Chinese Academy of Sciences, Hefei, China and HeFei University of Technology, Hefei (China)

2014-02-12T23:59:59.000Z

415

Cloud Features and Zonal Wind Measurements of Saturn's Atmosphere as Observed by Cassini/VIMS  

E-Print Network [OSTI]

We present an analysis of data about Saturn's atmosphere from Cassini's Visual and Infrared Mapping Spectrometer (VIMS), focusing on the meteorology of the features seen in the 5-micron spectral window. We present VIMS mosaics and discuss the morphology and general characteristics of the features backlit by Saturn's thermal emission. We have also constructed a zonal wind profile from VIMS feature tracking observation sequences using an automated cloud feature tracker. Comparison with previously constructed profiles from Voyager and Cassini imaging data reveals broad similarities, suggesting minimal vertical shear of the zonal wind. However, areas of apparent wind shear are present in the VIMS zonal wind profile at jet stream cores. In particular, our analysis shows that the equatorial jet reaches speeds exceeding 450 m/s, similar to speeds obtained during the Voyager era. This suggests that recent inferences of relatively slower jet speeds of ~275-375 m/s are confined to the upper troposphere and that the dee...

Choi, David S; Brown, Robert H; 10.1029/2008JE003254

2013-01-01T23:59:59.000Z

416

Visualization and analysis of eddies in a global ocean simulation  

SciTech Connect (OSTI)

Eddies at a scale of approximately one hundred kilometers have been shown to be surprisingly important to understanding large-scale transport of heat and nutrients in the ocean. Due to difficulties in observing the ocean directly, the behavior of eddies below the surface is not very well understood. To fill this gap, we employ a high-resolution simulation of the ocean developed at Los Alamos National Laboratory. Using large-scale parallel visualization and analysis tools, we produce three-dimensional images of ocean eddies, and also generate a census of eddy distribution and shape averaged over multiple simulation time steps, resulting in a world map of eddy characteristics. As expected from observational studies, our census reveals a higher concentration of eddies at the mid-latitudes than the equator. Our analysis further shows that mid-latitude eddies are thicker, within a range of 1000-2000m, while equatorial eddies are less than 100m thick.

Williams, Sean J [Los Alamos National Laboratory; Hecht, Matthew W [Los Alamos National Laboratory; Petersen, Mark [Los Alamos National Laboratory; Strelitz, Richard [Los Alamos National Laboratory; Maltrud, Mathew E [Los Alamos National Laboratory; Ahrens, James P [Los Alamos National Laboratory; Hlawitschka, Mario [UC DAVIS; Hamann, Bernd [UC DAVIS

2010-10-15T23:59:59.000Z

417

Effects of self-heating and phase change on the thermal profile of hydrogen isotopes in confined geometries  

SciTech Connect (OSTI)

Growth of high-quality single-crystal hydrogen in confined geometries relies on the in situ formation of seed crystals. Generation of deuterium-tritium seed crystals in a confined geometry is governed by three effects: self-heating due to tritium decay, external thermal environment, and latent heat of phase change at the boundary between hydrogen liquid and vapor. A detailed computation of the temperature profile for liquid hydrogen inside a hollow shell, as is found in inertial confinement fusion research, shows that seeds are likely to form at the equatorial plane of the shell. Radioactive decay of tritium to helium slowly alters the composition of the hydrogen vapor, resulting in a modified temperature profile that encourages seed formation at the top of the shell. We show that the computed temperature profile is consistent with a variety of experimental observations.

Baxamusa, S., E-mail: baxamusa1@llnl.gov; Field, J.; Dylla-Spears, R.; Kozioziemski, B.; Suratwala, T.; Sater, J. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States)

2014-03-28T23:59:59.000Z

418

Effects of Turbulence on Cosmic Ray Propagation in Protostars and Young Star/Disk Systems  

E-Print Network [OSTI]

The magnetic fields associated with young stellar objects are expected to have an hour-glass geometry, i.e., the magnetic field lines are pinched as they thread the equatorial plane surrounding the forming star but merge smoothly onto a background field at large distances. With this field configuration, incoming cosmic rays experience both a funneling effect that acts to enhance the flux impinging on the circumstellar disk and a magnetic mirroring effect that acts to reduce that flux. To leading order, these effects nearly cancel out for simple underlying magnetic field structures. However, the environments surrounding young stellar objects are expected to be highly turbulent. This paper shows how the presence of magnetic field fluctuations affects the process of magnetic mirroring, and thereby changes the flux of cosmic rays striking circumstellar disks. Turbulence has two principle effects: 1) The (single) location of the magnetic mirror point found in the absence of turbulence is replaced with a wide distr...

Fatuzzo, Marco

2014-01-01T23:59:59.000Z

419

Protons in the near-lunar wake observed by the Sub-keV Atom Reflection Analyzer on board Chandrayaan-1  

E-Print Network [OSTI]

Significant proton fluxes were detected in the near wake region of the Moon by an ion mass spectrometer on board Chandrayaan-1. The energy of these nightside protons is slightly higher than the energy of the solar wind protons. The protons are detected close to the lunar equatorial plane at a $140^{\\circ}$ solar zenith angle, i.e., ~50$^{\\circ}$ behind the terminator at a height of 100 km. The protons come from just above the local horizon, and move along the magnetic field in the solar wind reference frame. We compared the observed proton flux with the predictions from analytical models of an electrostatic plasma expansion into a vacuum. The observed velocity was higher than the velocity predicted by analytical models by a factor of 2 to 3. The simple analytical models cannot explain the observed ion dynamics along the magnetic field in the vicinity of the Moon.

Futaana, Yoshifumi; Wieser, Martin; Holmström, M; Bhardwaj, Anil; Dhanya, M B; Sridharan, R; Wurz, Peter; Schaufelberger, Audrey; Asamura, Kazushi; 10.1029/2010JA015264

2010-01-01T23:59:59.000Z

420

Periodic Optical Outbursts from the Be/Neutron Star Binary AX J0049.4-7323  

E-Print Network [OSTI]

The optical light curve of the Be/neutron star binary AX J0049.4-7323 has been investigated using data from the MACHO and OGLE-II projects. This X-ray source, whose neutron star has a very slow rotation rate (P_pulse=755.5 sec), shows optical outbursts every 394 days. The regularity of these outbursts suggests that their recurrence time is the orbital period of the system. During the outbursts the system brightens and becomes slightly redder. A possible interpretation is that a portion of the equatorial disk is excited as the neutron star passes through it during periastron passage. In the intervals between outbursts the light curve shows 11-day quasi-periodic varability which may be associated with the rotation of the Be star's extended disk.

A. P. Cowley; P. C. Schmidtke

2003-11-17T23:59:59.000Z

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Spin-geodesic deviations in the Kerr spacetime  

E-Print Network [OSTI]

The dynamics of extended spinning bodies in the Kerr spacetime is investigated in the pole-dipole particle approximation and under the assumption that the spin-curvature force only slightly deviates the particle from a geodesic path. The spin parameter is thus assumed to be very small and the back reaction on the spacetime geometry neglected. This approach naturally leads to solve the Mathisson-Papapetrou-Dixon equations linearized in the spin variables as well as in the deviation vector, with the same initial conditions as for geodesic motion. General deviations from generic geodesic motion are studied, generalizing previous results limited to the very special case of an equatorial circular geodesic as the reference path.

Donato Bini; Andrea Geralico

2014-08-21T23:59:59.000Z

422

Spin-induced non-geodesic motion, gyroscopic precession, Wigner rotation and EPR correlations of massive spin 1/2 particles in a gravitational field  

E-Print Network [OSTI]

We investigate in a covariant manner the spin-induced non-geodesic motion of massive spin 1/2 particles in an arbitrary gravitational field for trajectories that are initially geodesic when spin is ignored. Using the WKB approximation for the wave function in curved spacetime, we compute the O(hbar) correction to the Wigner rotation of the spin 1/2 particle, whose O(1) contribution is zero on timelike geodesics. We develop conditions for the motion of observers in which the Wigner rotation is null. For the spherically symmetric Schwarzschild metric, we consider specific examples of particle motion in the equatorial plane for (i) circular orbits and (ii) radially infalling trajectories. For the former case we consider the entanglement for a perfectly anti-correlated EPR entangled pair of spins as the separate qubits traverse the circular orbit in same direction.

P. M. Alsing; G. J. Stephenson Jr.; P. Kilian

2009-02-09T23:59:59.000Z

423

Analysis of the effects of ionospheric sampling of reflection points near-path, for high-frequency single-site-location direction finding systems. Master's thesis  

SciTech Connect (OSTI)

This thesis suggests a method to estimate the current value of an ionospheric parameter. The proposed method is based on the known variability of the observed current values near path and utilizes data derived from ionospheric sampling measurements. Analysis of errors is provided in Single-Site-Location High-Frequency Direction Finding (SSL-HFDF), arising from ionospheric irregularities such as Es (sporadic E), ionospheric tilts, and traveling ionospheric disturbances (TIDs). The characteristics of Es, tilts and TIDs for mid-latitudes are summarized in tables. The spatial and temporal coherence of ionospheric variabilities and irregularities is analyzed over the electron density. Practical results, measurements, and studies are presented on SSL-HFDF. A survey of characteristics of the ionosphere in the equatorial region is also provided. Finally, some recommendations are given to maximize the applicability of the proposed method.

Filho, C.A.

1990-12-01T23:59:59.000Z

424

Asymmetric directly driven capsule implosions: Modeling and experiments-A requirement for the National Ignition Facility  

SciTech Connect (OSTI)

Direct-drive experiments at the University of Rochester's OMEGA laser [T. R. Boehly, R. L. McCrory, C. P. Verdon et al., Fusion Eng. Des. 44, 35 (1999)] have been performed to prototype eventual campaigns on the National Ignition Facility (NIF) [E. I. Moses and C. R. Wuest, Fusion Sci. Technol. 43, 420 (2003)] to investigate the mixing of target materials. Spherical-implosion targets with equatorial defects have been irradiated with polar direct drive, a requirement for direct-drive experiments at NIF. The physics question addressed by these results is whether simulations can match data on 0th-order hydrodynamics and implosion symmetry, the most basic implosion features, with and without the defect. The successful testing of hydrodynamic simulations leads to better designs for experiments and guides accurate planning for polar-direct-drive-ignition studies on the NIF platform.

Cobble, J. A.; Murphy, T. J.; Schmitt, M. J.; Bradley, P. A.; Krashenninikova, N. S.; Obrey, K. A.; Hsu, S. C.; Tregillis, I. L.; Magelssen, G. R.; Wysocki, F. J.; Batha, S. H. [Los Alamos National Laboratory, Mail Stop E527, Los Alamos, New Mexico 87545 (United States)

2012-12-15T23:59:59.000Z

425

Large Scale Structure in the Local Universe: The 2MASS Galaxy Catalog  

E-Print Network [OSTI]

Using twin ground-based telescopes, the Two Micron All Sky Survey (2MASS) scanned both equatorial hemi- spheres, detecting more than 500 million stars and resolving more than 1.5 million galaxies in the near-infrared (1 - 2.2 microns) bands. The Extended Source "Galaxy" Catalog (XSC) embodies both photometric and astrometric whole sky uniformity, revealing large scale structures in the local Universe and extending our view into the Milky Way's dust-obscured "Zone of Avoidance." The XSC represents a uniquely unbiased sample of "normal" galaxies, particularly sensitive to the underlying, dominant, stellar mass component of galaxies. The basic properties of the XSC, including photometric sensitivity, source counts, and spatial distribution are presented here. We illustrate the spatial clustering properties, ranging from interacting galaxies to groups and clusters, and finally to the largest "cosmic web" of superclusters spanning the sky.

Thomas Jarrett

2004-05-04T23:59:59.000Z

426

Virial tests for post-Newtonian stationary black-hole-disk systems  

E-Print Network [OSTI]

We investigated hydrodynamical post-Newtonian models of selfgravitating stationary black-hole-disk systems. The post-Newtonian scheme presented here and also in our recent paper is a continuation of previous, purely Newtonian studies of selfgravitating hydrodynamical disks rotating according to the Keplerian rotation law. The post-Newtonian relativistic corrections are significant even at the 1PN level. The 1PN correction to the angular velocity can be of the order of 10% of its Newtonian value. It can be expressed as a combination of geometric and hydrodynamical terms. Moreover, in contrast to the Newtonian Poincare-Wavre theorem, it depends both on the distance from the rotation axis and the distance from the equatorial plane.

Jaranowski, Piotr; Malec, Edward; Pirog, Michal

2015-01-01T23:59:59.000Z

427

Spinning superconducting electrovacuum soliton  

E-Print Network [OSTI]

In nonlinear electrodynamics coupled to general relativity and satisfying the weak energy condition, a spherically symmetric electrically charged electrovacuum soliton has obligatory de Sitter center in which the electric field vanishes while the energy density of electromagnetic vacuum achieves its maximal value. De Sitter vacuum supplies a particle with the finite positive electromagnetic mass related to breaking of space-time symmetry from the de Sitter group in the origin. By the G\\"urses-G\\"ursey algorithm based on the Newman-Trautman technique it is transformed into a spinning electrovacuum soliton asymptotically Kerr-Newman for a distant observer. De Sitter center becomes de Sitter equatorial disk which has both perfect conductor and ideal diamagnetic properties. The interior de Sitter vacuum disk displays superconducting behavior within a single spinning soliton. This behavior found for an arbitrary nonlinear lagrangian ${\\cal L}(F)$, is generic for the class of regular spinning electrovacuum solutions describing both black holes and particle-like structures.

Irina Dymnikova

2006-07-24T23:59:59.000Z

428

Late-Time Dynamics of Scalar Fields on Rotating Black Hole Backgrounds  

E-Print Network [OSTI]

Motivated by results of recent analytic studies, we present a numerical investigation of the late-time dynamics of scalar test fields on Kerr backgrounds. We pay particular attention to the issue of mixing of different multipoles and their fall-off behavior at late times. Confining ourselves to the special case of axisymmetric modes with equatorial symmetry, we show that, in agreement with the results of previous work, the late-time behavior is dominated by the lowest allowed l-multipole. However the numerical results imply that, in general, the late-time fall-off of the dominating multipole is different from that in the Schwarzschild case, and seems to be incompatible with a result of a recently published analytic study.

William Krivan

1999-07-08T23:59:59.000Z

429

Optical reference geometry and inertial forces in Kerr-de Sitter spacetimes  

E-Print Network [OSTI]

Optical reference geometry and related concept of inertial forces are investigated in Kerr-de Sitter spacetimes. Properties of the inertial forces are summarized and their typical behaviour is illustrated. The intuitive 'Newtonian' application of the forces in the relativistic dynamics is demonstrated in the case of the test particle circular motion, static equilibrium positions and perfect fluid toroidal configurations. Features of the optical geometry are illustrated by the embedding diagrams of its equatorial plane. The embedding diagrams do not cover whole the stationary regions of the spacetimes, therefore the limits of embeddability are established. A shape of the embedding diagrams is related to the behaviour of the centrifugal force and it is characterized by the number of turning points of the diagrams. Discussion of the number of embeddable photon circular orbits is also included and the typical embedding diagrams are constructed. The Kerr-de Sitter spacetimes are classified according to the properties of the inertial forces and embedding diagrams.

Jiri Kovar; Zdenek Stuchlik

2007-01-03T23:59:59.000Z

430

Superclusters of galaxies from the 2df redshift survey. 1. the catalogue  

SciTech Connect (OSTI)

We use the 2dF Galaxy Redshift Survey data to compile catalogues of superclusters for the Northern and Southern regions of the 2dFGRS, altogether 543 superclusters at redshifts 0.009 {le} z {le} 0.2. We analyze methods of compiling supercluster catalogues and use results of the Millennium Simulation to investigate possible selection effects and errors. We find that the most effective method is the density field method using smoothing with an Epanechnikov kernel of radius 8 h{sup -1} Mpc. We derive positions of the highest luminosity density peaks and find the most luminous cluster in the vicinity of the peak, this cluster is considered as the main cluster and its brightest galaxy the main galaxy of the supercluster. In catalogues we give equatorial coordinates and distances of superclusters as determined by positions of their main clusters. We also calculate the expected total luminosities of the superclusters.

Einasto, Jaan; Einasto, M.; Tago, E.; Saar, E.; Huetsi, G.; Joeveer, M.; Liivamagi, L.J.; Suhhonenko, I.; Jaaniste, J.; Heinamaki, P.; Mueller, V.; Knebe, A.; Tucker, D. /Tartu Observ. /Estonian U. /Tuorla Observ. /Potsdam, Astrophys. Inst. /Fermilab

2006-03-01T23:59:59.000Z

431

Complete genome sequence of the halophilic bacterium Spirochaeta africana type strain (Z-7692T) from the alkaline Lake Magadi in the East African Rift  

SciTech Connect (OSTI)

Spirochaeta africana Zhilina et al. 1996 is an anaerobic, aerotolerant, spiral-shaped bacte- rium that is motile via periplasmic flagella. The type strain of the species, Z-7692T, was iso- lated in 1993 or earlier from a bacterial bloom in the brine under the trona layer in a shallow lagoon of the alkaline equatorial Lake Magadi in Kenya. Here we describe the features of this organism, together with the complete genome sequence, and annotation. Considering the pending reclassification of S. caldaria to the genus Treponema, S. africana is only the second 'true' member of the genus Spirochaeta with a genome-sequenced type strain to be pub- lished. The 3,285,855 bp long genome of strain Z-7692T with its 2,817 protein-coding and 57 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Liolios, Konstantinos [U.S. Department of Energy, Joint Genome Institute; Abt, Birte [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Scheuner, Carmen [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Teshima, Hazuki [Los Alamos National Laboratory (LANL); Held, Brittany [Los Alamos National Laboratory (LANL); Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Nolan, Matt [U.S. Department of Energy, Joint Genome Institute; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Deshpande, Shweta [U.S. Department of Energy, Joint Genome Institute; Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Pagani, Ioanna [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Mikhailova, Natalia [U.S. Department of Energy, Joint Genome Institute; Huntemann, Marcel [U.S. Department of Energy, Joint Genome Institute; Pati, Amrita [U.S. Department of Energy, Joint Genome Institute; Chen, Amy [U.S. Department of Energy, Joint Genome Institute; Palaniappan, Krishna [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Rohde, Manfred [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Tindall, Brian [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Goker, Markus [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Bristow, James [U.S. Department of Energy, Joint Genome Institute; Eisen, Jonathan [U.S. Department of Energy, Joint Genome Institute; Markowitz, Victor [U.S. Department of Energy, Joint Genome Institute; Hugenholtz, Philip [U.S. Department of Energy, Joint Genome Institute; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Klenk, Hans-Peter [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute

2013-01-01T23:59:59.000Z

432

Determining Transition State Geometries in Liquids Using 2D-IR  

SciTech Connect (OSTI)

Many properties of chemical reactions are determined by the transition state connecting reactant and product, yet it is difficult to directly obtain any information about these short-lived structures in liquids. We show that two-dimensional infrared (2D-IR) spectroscopy can provide direct information about transition states by tracking the transformation of vibrational modes as a molecule crossed a transition state. We successfully monitored a simple chemical reaction, the fluxional rearrangement of Fe(CO)5, in which the exchange of axial and equatorial CO ligands causes an exchange of vibrational energy between the normal modes of the molecule. This energy transfer provides direct evidence regarding the time scale, transition state, and mechanism of the reaction.

Harris, Charles; Cahoon, James F.; Sawyer, Karma R.; Schlegel, Jacob P.; Harris, Charles B.

2007-12-11T23:59:59.000Z

433

Radiological-dose assessments of atolls in the northern Marshall Islands  

SciTech Connect (OSTI)

The Marshall Islands in the Equatorial Pacific, specifically Enewetak and Bikini Atolls, were the site of US nuclear testing from 1946 through 1958. In 1978, the Northern Marshall Islands Radiological Survey was conducted to evaluate the radiological conditions of two islands and ten atolls downwind of the proving grounds. The survey included aerial external gamma measurements and collection of soil, terrestrial, and marine samples for radionuclide analysis to determine the radiological dose from all exposure pathways. The methods and models used to estimate doses to a population in an environment where natural processes have acted on the source-term radionuclides for nearly 30 y, data bases developed for the models, and results of the radiological dose analyses are described.

Robison, W.L.

1983-04-01T23:59:59.000Z

434

MATTER MIXING IN ASPHERICAL CORE-COLLAPSE SUPERNOVAE: A SEARCH FOR POSSIBLE CONDITIONS FOR CONVEYING {sup 56}Ni INTO HIGH VELOCITY REGIONS  

SciTech Connect (OSTI)

We perform two-dimensional axisymmetric hydrodynamic simulations of matter mixing in aspherical core-collapse supernova explosions of a 16.3 M{sub Sun} star with a compact hydrogen envelope. Observations of SN 1987A have provided evidence that {sup 56}Ni synthesized by explosive nucleosynthesis is mixed into fast moving matter ({approx}>3500 km s{sup -1}) in the exploding star. In order to clarify the key conditions for reproducing such high velocity of {sup 56}Ni, we revisit matter mixing in aspherical core-collapse supernova explosions. Explosions are initiated artificially by injecting thermal and kinetic energies around the interface between the iron core and the silicon-rich layer. Perturbations of 5% or 30% amplitude in the radial velocities are introduced at several points in time. We find that no high velocity {sup 56}Ni can be obtained if we consider bipolar explosions with perturbations (5% amplitude) of pre-supernova origins. If large perturbations (30% amplitude) are introduced or exist due to some unknown mechanism in a later phase just before the shock wave reaches the hydrogen envelope, {sup 56}Ni with a velocity of 3000 km s{sup -1} can be obtained. Aspherical explosions that are asymmetric across the equatorial plane with clumpy structures in the initial shock waves are investigated. We find that the clump sizes affect the penetration of {sup 56}Ni. Finally, we report that an aspherical explosion model that is asymmetric across the equatorial plane with multiple perturbations of pre-supernova origins can cause the penetration of {sup 56}Ni clumps into fast moving matter of 3000 km s{sup -1}. We show that both aspherical explosions with clumpy structures and perturbations of pre-supernova origins may be necessary to reproduce the observed high velocity of {sup 56}Ni. To confirm this, more robust three-dimensional simulations are required.

Ono, Masaomi; Nagataki, Shigehiro; Ito, Hirotaka; Lee, Shiu-Hang; Mao, Jirong; Tolstov, Alexey [Astrophysical Big Bang Laboratory, RIKEN, Saitama 351-0198 (Japan); Hashimoto, Masa-aki, E-mail: masaomi.ono@riken.jp [Department of Physics, Kyushu University, Fukuoka 812-8581 (Japan)

2013-08-20T23:59:59.000Z

435

On the connection between continental-scale land surface processes and the tropical climate in a coupled ocean-atmosphere-land system  

SciTech Connect (OSTI)

The impact of global tropical climate to perturbations in land surface processes (LSP) are evaluated using perturbations given by different LSP representations of continental-scale in a global climate model that includes atmosphere-ocean interactions. One representation is a simple land scheme, which specifies climatological albedos and soil moisture availability. The other representation is the more comprehensive Simplified Simple Biosphere Model, which allows for interactive soil moisture and vegetation biophysical processes. The results demonstrate that LSP processes such as interactive soil moisture and vegetation biophysical processes have strong impacts on the seasonal mean states and seasonal cycles of global precipitation, clouds, and surface air temperature. The impact is especially significant over the tropical Pacific. To explore the mechanisms for such impact, different LSP representations are confined to selected continental-scale regions where strong interactions of climate-vegetation biophysical processes are present. We find that the largest impact is mainly from LSP perturbations over the tropical African continent. The impact is through anomalous convective heating in tropical Africa due to changes in the surface heat fluxes, which in turn affect basinwide teleconnections in the Pacific through equatorial wave dynamics. The modifications in the equatorial Pacific climate are further enhanced by strong air-sea coupling between surface wind stress and upwelling, as well as effect of ocean memory. Our results further suggest that correct representations of land surface processes, land use change and the associated changes in the deep convection over tropical Africa are crucial to reducing the uncertainty when performing future climate projections under different climate change scenarios.

Ma, Hsi-Yen; Mechoso, C. R.; Xue, Yongkang; Xiao, Heng; Neelin, David; Ji, Xuan

2013-11-15T23:59:59.000Z

436

Sensitivity of global tropical climate to land surface processes: Mean state and interannual variability  

SciTech Connect (OSTI)

This study examines the sensitivity of global tropical climate to land surface processes (LSP) using an atmospheric general circulation model both uncoupled (with prescribed SSTs) and coupled to an oceanic general circulation model. The emphasis is on the interactive soil moisture and vegetation biophysical processes, which have first order influence on the surface energy and water budgets. The sensitivity to those processes is represented by the differences between model simulations, in which two land surface schemes are considered: 1) a simple land scheme that specifies surface albedo and soil moisture availability, and 2) the Simplified Simple Biosphere Model (SSiB), which allows for consideration of interactive soil moisture and vegetation biophysical process. Observational datasets are also employed to assess the reality of model-revealed sensitivity. The mean state sensitivity to different LSP is stronger in the coupled mode, especially in the tropical Pacific. Furthermore, seasonal cycle of SSTs in the equatorial Pacific, as well as ENSO frequency, amplitude, and locking to the seasonal cycle of SSTs are significantly modified and more realistic with SSiB. This outstanding sensitivity of the atmosphere-ocean system develops through changes in the intensity of equatorial Pacific trades modified by convection over land. Our results further demonstrate that the direct impact of land-atmosphere interactions on the tropical climate is modified by feedbacks associated with perturbed oceanic conditions ("indirect effect" of LSP). The magnitude of such indirect effect is strong enough to suggest that comprehensive studies on the importance of LSP on the global climate have to be made in a system that allows for atmosphere-ocean interactions.

Ma, Hsi-Yen; Xiao, Heng; Mechoso, C. R.; Xue, Yongkang

2013-03-01T23:59:59.000Z

437

Light deflection and time delay in the solar gravitational field  

SciTech Connect (OSTI)

The second nonvanishing order of contribution to light deflection and time delay in the solar gravitational field is studied for a realistic solar model and for a wide range of metric theories of gravity. It is shown that the second-order effects arise at order (GM/c/sup 2/R)/sup 2/ identical to epsilon/sup 4/. To calculate these effects, every component of the solar metric must be known to order epsilon/sup 4/. The parametrized post-Newtonian (PPN) metric provides most of those components. However, some extension of the PPN metric is required. This extension leads to the parametrized post-linear (PPL) metric, which is used in all calculations. To study light deflection to order epsilon/sup 4/ requires that the orbits of scattered photons be known to that order. These orbits are solved for, first in the equatorial plane and then in general, and are used to determine the deflection as measured by an observer at rest with respect to the sun. In the equatorial plane there is only a radial component to this deflection. In general, there is another component orthogonal to the radial plane, but knowledge of this component is not necessary to determine the total deflection to order epsilon/sup 4/. The total second-order deflection can be as large as 300..mu.. arcsec (for deflection by Jupiter). Measurements of some second-order terms are within the astrometric capabilities of experiments proposed for the 1990's. The time delay in the round-trip travel time of a radar beam reflected from a planet is due to the variable coordinate speed of the light signal and to the bending of the beam path. The delay is calculated to order epsilon/sup 4/. It is shown that the beam-bending gives a second-order contribution as large as the present-day uncertainties in time delay experiments with the Viking spacecraft.

Richter, G.W.

1983-01-01T23:59:59.000Z

438

TRANSITION FROM REGULAR TO CHAOTIC CIRCULATION IN MAGNETIZED CORONAE NEAR COMPACT OBJECTS  

SciTech Connect (OSTI)

Accretion onto black holes and compact stars brings material in a zone of strong gravitational and electromagnetic fields. We study dynamical properties of motion of electrically charged particles forming a highly diluted medium (a corona) in the regime of strong gravity and large-scale (ordered) magnetic field. We start our work from a system that allows regular motion, then we focus on the onset of chaos. To this end, we investigate the case of a rotating black hole immersed in a weak, asymptotically uniform magnetic field. We also consider a magnetic star, approximated by the Schwarzschild metric and a test magnetic field of a rotating dipole. These are two model examples of systems permitting energetically bound, off-equatorial motion of matter confined to the halo lobes that encircle the central body. Our approach allows us to address the question of whether the spin parameter of the black hole plays any major role in determining the degree of the chaoticness. To characterize the motion, we construct the recurrence plots (RPs) and we compare them with Poincare surfaces of section. We describe the RPs in terms of the recurrence quantification analysis, which allows us to identify the transition between different dynamical regimes. We demonstrate that this new technique is able to detect the chaos onset very efficiently and provide its quantitative measure. The chaos typically occurs when the conserved energy is raised to a sufficiently high level that allows the particles to traverse the equatorial plane. We find that the role of the black hole spin in setting the chaos is more complicated than initially thought.

Kopacek, O.; Karas, V. [Astronomical Institute, Academy of Sciences, BocnI II 1401, CZ-141 31 Prague (Czech Republic); Kovar, J.; StuchlIk, Z., E-mail: kopacek@ig.cas.c [Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezrucovo nam. 13, CZ-746 01 Opava (Czech Republic)

2010-10-20T23:59:59.000Z

439

Magnetic Penrose Process and Blanford-Zanejk mechanism: A clarification  

E-Print Network [OSTI]

The Penrose process (PP) is an ingenious mechanism of extracting rotational energy from a rotating black hole, however it was soon realized that it was not very efficient for its astrophysical applications for powering the central engine of quasars and AGNs. The situation however changed dramatically in the presence of magnetic field produced by the accretion disk surrounding the hole in the equatorial plane. In 1985, Wagh, Dhurandhar and Dadhich had for the first time considered the magnetic Penrose process (MPP) in which the magnetic field could now provide the energy required for a fragment to ride on negative energy orbit thereby overcoming the stringent velocity constraint of the original PP. Thus MPP turned very efficient and so much so that efficiency could now even exceed 100 percent. They had in principle established revival of PP for astrophysical applications in powering the high energy sources. MPP is however similar to the earlier discovered and well known Blandford-Znajeck (BZ) mechanism in which the rotational energy of the hole is extracted out through a purely electromagnetic process. Though both the processes use magnetic field as a device to extract rotational energy from the hole, yet their kernel is quite different in spirit. For the former magnetic field provides the threshold energy for particle to get onto negative energy orbit so that the other fragment goes out with enhanced energy while for the latter it generates an electric potential difference between the equatorial plane and the polar region, and it is the discharge of which that drives the energy flux out of the hole. In other words, MPP is still rooted in the spacetime geometry while BZ is essentially driven by electromagnetic interaction.

Naresh Dadhich

2012-10-03T23:59:59.000Z

440

Hubble Space Telescope imaging and ground-based spectroscopy of old nova shells - I. FH Ser, V533 Her, BT Mon, DK Lac, V476 Cyg  

E-Print Network [OSTI]

In this paper we report on the first five out of eleven observations in our programme of Hubble Space Telescope (HST) imaging of old nova shells. We present new WFPC2 images of the shells around FH Ser and V533 Her taken in the F656N (Halpha+[NII]) filter. We also show long-slit spectra taken using the William Herschel Telescope (WHT) in La Palma for these objects in the same spectral range. The shell around FH Ser is found to be a prolate ellipsoid of ellipticity 1.3 +/- 0.1 inclined at 62 +/- 4 deg to the line of sight. The shell has an equatorial ring which is found to be due to increased emission in the two [NII] lines rather than Halpha. The expansion velocity, systemic velocity and distance are found to be 490 +/- 20 km/s, -45 km/s and 950 +/- 50 pc. The origin of the [NII] equatorial ring is discussed in the context of a photoionization feature resulting from aspherical illumination by the central source rather than a simple density enhancement. It is possible however that the ring is also in part due to an extremely localised increase in the nitrogen abundance. Similar imaging and spectroscopy of the nova V533 Her reveal a shell of radius 5 +/- 0.7 arcsec with an axial ratio of 1.2 +/- 0.2, expansion velocity of 850 +/- 150 km/s and distance 1250 +/- 300 pc. The shells around BT Mon, DK Lac and V476 Cyg were not detected with HST.

C. D. Gill; T. J. O'Brien

2000-01-06T23:59:59.000Z

Note: This page contains sample records for the topic "brazzaville equatorial guinea" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

LFSC - Linac Feedback Simulation Code  

SciTech Connect (OSTI)

The computer program LFSC () is a numerical tool for simulation beam based feedback in high performance linacs. The code LFSC is based on the earlier version developed by a collective of authors at SLAC (L.Hendrickson, R. McEwen, T. Himel, H. Shoaee, S. Shah, P. Emma, P. Schultz) during 1990-2005. That code was successively used in simulation of SLC, TESLA, CLIC and NLC projects. It can simulate as pulse-to-pulse feedback on timescale corresponding to 5-100 Hz, as slower feedbacks, operating in the 0.1-1 Hz range in the Main Linac and Beam Delivery System. The code LFSC is running under Matlab for MS Windows operating system. It contains about 30,000 lines of source code in more than 260 subroutines. The code uses the LIAR ('Linear Accelerator Research code') for particle tracking under ground motion and technical noise perturbations. It uses the Guinea Pig code to simulate the luminosity performance. A set of input files includes the lattice description (XSIF format), and plane text files with numerical parameters, wake fields, ground motion data etc. The Matlab environment provides a flexible system for graphical output.

Ivanov, Valentin; /Fermilab

2008-05-01T23:59:59.000Z

442

Structural/functional relationships between internal and external MSH receptors: modulation of expression in Cloudman melanoma cells by UVB radiation  

SciTech Connect (OSTI)

Expression of internal receptors for MSH is an important criterion for responsiveness to MSH by Cloudman melanoma cells. Here, we show that internal and external receptors for MSH are of identical molecular weights (50-53 kDa) and share common antigenic determinants, indicating a structural relationship between the 2 populations of molecules. The internal receptors co-purified with a sub-cellular fraction highly enriched for small vesicles, many of which were coated. Ultraviolet B light (UVB) acted synergistically with MSH to increase tyrosinase activity and melanin content of cultured Cloudman melanoma cells, consistent with previous findings in the skin of mice and guinea pigs. Preceding the rise in tyrosinase activity in cultured cells, UVB elicited a decrease in internal MSH binding sites and a concomitant increase in external sites. The time frame for the UVB effects on MSH receptors and melanogenesis, 48 hours, was similar to that for a response to solar radiation in humans. Together, the results indicate a key role for MSH receptors in the induction of melanogenesis by UVB and suggest a potential mechanism of action for UVB: redistribution of MSH receptors with a resultant increase in cellular responsiveness to MSH.

Chakraborty, A.K.; Orlow, S.J.; Bolognia, J.L.; Pawelek, J.M. (Department of Dermatology, Yale University School of Medicine, New Haven, CT (USA))

1991-04-01T23:59:59.000Z

443

Inhalation toxicology of red and violet mixtures. Chamber concentration and particle-size distribution report  

SciTech Connect (OSTI)

An inhalation exposure facility was developed at the U.S. EPA, RTP, NC to conduct inhalation exposures of rodents and guinea pigs to dye mixtures used by the U.S. Army in the manufacture of smoke munitions. Initially, an evaluation of the prototype chamber aerosol homogeneity was conducted to determine the uniformity and reproducibility of the concentration and particle size of dye aerosol throughout the breathing zone of the test animals. The three dyes, DR11, SR1, and DB3, were chemically analyzed for purity and optically examined for size and shape. All pure dyes appeared to be stable at room temperature except DB3, which decomposes if not stored at 4 C. The particle size ranges varied for each pure dye and structures were either amorphous (azo dye) or crystalline (anthraquinone dyes). The bulk red and violet dye mixtures were analyzed for composition. The chemical analysis of the relative composition of each dye mixture, collected by cascade impactor sampling, revealed fractionation of the mixtures into component dyes.

Higuchi, M.A.; Davies, D.W.

1991-07-01T23:59:59.000Z

444

Human radiation experiments associated with the US Department of Energy and its predecessors  

SciTech Connect (OSTI)

This document contains a listing, description, and selected references for documented human radiation experiments sponsored, supported, or performed by the US Department of Energy (DOE) or its predecessors, including the US Energy Research and Development Administration (ERDA), the US Atomic Energy Commission (AEC), the Manhattan Engineer District (MED), and the Off ice of Scientific Research and Development (OSRD). The list represents work completed by DOE`s Off ice of Human Radiation Experiments (OHRE) through June 1995. The experiment list is available on the Internet via a Home Page on the World Wide Web (http://www.ohre.doe.gov). The Home Page also includes the full text of Human Radiation Experiments. The Department of Energy Roadmap to the Story and the Records (DOE/EH-0445), published in February 1995, to which this publication is a supplement. This list includes experiments released at Secretary O`Leary`s June 1994 press conference, as well as additional studies identified during the 12 months that followed. Cross-references are provided for experiments originally released at the press conference; for experiments released as part of The DOE Roadmap; and for experiments published in the 1986 congressional report entitled American Nuclear Guinea Pigs: Three Decades of Radiation Experiments on US Citizens. An appendix of radiation terms is also provided.

None

1995-07-01T23:59:59.000Z

445

The bovine tuberculosis burden in cattle herds in zones with low dose radiation pollution in the Ukraine  

SciTech Connect (OSTI)

The authors describe a study of the tuberculosis (TB) incidence in cattle exposed to low doses of radiation resulting from the Chernobyl (pronounced ‘Chornobyl’ in Ukrainian) nuclear plant catastrophe in 1986. The purpose of the study was to determine if ionising radiation influences the number of outbreaks of bovine TB and their severity on farms in the Kyiv, Cherkasy and Chernigiv regions of the Ukraine. These farms are all located within a 200 km radius of Chernobyl and have had low?dose radiation pollution. Pathological and blood samples were taken from cattle in those regions that had positive TB skin tests. Mycobacterium spp. were isolated, differentiated by PCR, analysed and tested in guinea?pigs and rabbits. Species differentiation showed a significant percentage of atypical mycobacteria, which resulted in the allergic reactions to tuberculin antigen in the skin test. Mixed infection of M. bovis and M. avium subsp. hominissuis was found in three cases. The results concluded that low?dose radiation plays a major role in the occurrence of bovine TB in regions affected by the Chernobyl nuclear disaster.

Weller, Richard E.; Skrypnyk, Artem; Zavgorodniy, Andriy; Stegniy, Borys; Gerilovych, Anton; Kutsan, Oleksandr; Pozmogova, Svitlana; Sapko, Svitlana

2009-02-01T23:59:59.000Z

446

Atmospheric Radiation Measurement (ARM) Data from the Tropical Western Pacific (TWP) Site.  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

ARM maintains four major, permanent sites for data collection and deploys the ARM Mobile Facility to other sites as determined. The Tropical Western Pacific (TWP) site is one of the four fixed sites. It consists of three climate research facilities; the Manus facility on Los Negros Island in Manus, Papua New Guinea (established in 1996); the Nauru facility on Nauru Island, Republic of Nauru (1998); and the Darwin facility in Darwin, Northern Territory, Australia (2002). The operations are supported by government agencies in each host country. Covering the area roughly between 10 degrees N and 10 degrees S of the equator and from 130 degrees E to 167 degrees E, the TWP locale includes a region that plays a large role in the interannual variability observed in the global climate system. More than 250,000 TWP data sets from 1996 to the present reside in the ARM Archive. Begin at the TWP information page for links or access data directly from the ARM Archive at http://www.archive.arm.gov/. Users will need to register for a password, but all files are then free for viewing or downloading. The ARM Archive physically resides at the Oak Ridge National Laboratory.

447

ECRH System For ITER  

SciTech Connect (OSTI)

A 26 MW Electron Cyclotron Heating and Current Drive (EC H and CD) system is to be installed for ITER. The main objectives are to provide, start-up assist, central H and CD and control of MHD activity. These are achieved by a combination of two types of launchers, one located in an equatorial port and the second type in four upper ports. The physics applications are partitioned between the two launchers, based on the deposition location and driven current profiles. The equatorial launcher (EL) will access from the plasma axis to mid radius with a relatively broad profile useful for central heating and current drive applications, while the upper launchers (ULs) will access roughly the outer half of the plasma radius with a very narrow peaked profile for the control of the Neoclassical Tearing Modes (NTM) and sawtooth oscillations. The EC power can be switched between launchers on a time scale as needed by the immediate physics requirements. A revision of all injection angles of all launchers is under consideration for increased EC physics capabilities while relaxing the engineering constraints of both the EL and ULs. A series of design reviews are being planned with the five parties (EU, IN, JA, RF, US) procuring the EC system, the EC community and ITER Organization (IO). The review meetings qualify the design and provide an environment for enhancing performances while reducing costs, simplifying interfaces, predicting technology upgrades and commercial availability. In parallel, the test programs for critical components are being supported by IO and performed by the Domestic Agencies (DAs) for minimizing risks. The wide participation of the DAs provides a broad representation from the EC community, with the aim of collecting all expertise in guiding the EC system optimization. Still a strong relationship between IO and the DA is essential for optimizing the design of the EC system and for the installation and commissioning of all ex-vessel components when several teams from several DAs will be involved together in the tests on the ITER site.

Darbos, C.; Henderson, M.; Gandini, F. [JTER Organization, 13067 Saint Paul-Lez-Durance cedex (France); Albajar, F.; Bomcelli, T.; Heidinger, R.; Saibene, G. [Fusion for Energy, C/Josep Pla 2, Torres Diagonal Litoral-B3, E-08019 Barcelona-Spain (Spain); Bigelow, T.; Rasmussen, D. [US ITER Project Office, Oak Ridge National Laboratory, 055 Commerce Park, PO Box 2008, Oak Ridge, TN 37831-6483 (United States); Chavan, R.; Goodman, T.; Hogge, J. P.; Sauter, O. [Association EURATOM-Confederation Suisse, EPFL Ecublens, CH-1015 Lausanne (Switzerland); Denisov, G. [Institute of Applied Physics Russian Academy of Sciences, 46 Ulyanov Street, Nizhny Novgorod, 603950 (Russian Federation); Farina, D. [Istitutodi Fisica del Plasma, Association EURATOM-ENEA-CNR, Milano (Italy); Kajiwara, K.; Kasugai, A.; Kobayashi, N.; Oda, Y.; Ramponi, G. [Japan Atomic Energy Agency (JAEA) 801-1 Mukoyama, Naka-shi, Ibaraki 311-0193 (Japan)] (and others)

2009-11-26T23:59:59.000Z

448

Magnetic reconnection at the termination shock in a striped pulsar wind  

E-Print Network [OSTI]

Most of the rotational luminosity of a pulsar is carried away by a relativistic magnetised wind in which the matter energy flux is negligible compared to the Poynting flux. Near the equatorial plane of an obliquely rotating pulsar magnetosphere, the magnetic field reverses polarity with the pulsar period, forming a wind with oppositely directed field lines. This structure is called a striped wind; dissipation of alternating fields in the striped wind is the object of our study. The aim of this paper is to study the conditions required for magnetic energy release at the termination shock of the striped pulsar wind. Magnetic reconnection is considered via analytical methods and 1D relativistic PIC simulations. An analytical condition on the upstream parameters for partial and full magnetic reconnection is derived from the conservation laws of energy, momentum and particle number density across the relativistic shock. Furthermore, by using a 1D relativistic PIC code, we study in detail the reconnection process at the termination shock. We found a very simple criterion for dissipation of alternating fields at the termination shock, depending on the upstream parameters of the flow. 1D relativistic PIC simulations are in agreement with our criterion. Thus, alternating magnetic fields annihilate easily at relativistic highly magnetised shocks.

Jerome Petri; Yuri Lyubarsky

2007-07-12T23:59:59.000Z

449

THE INFLUENCE OF INELASTIC NEUTRINO REACTIONS WITH LIGHT NUCLEI ON THE STANDING ACCRETION SHOCK INSTABILITY IN CORE-COLLAPSE SUPERNOVAE  

SciTech Connect (OSTI)

We perform numerical experiments to investigate the influence of inelastic neutrino reactions with light nuclei on the standing accretion shock instability (SASI). The time evolution of shock waves is calculated with a simple light-bulb approximation for the neutrino transport and a multi-nuclei equation of state. The neutrino absorptions and inelastic interactions with deuterons, tritons, helions, and alpha particles are taken into account in the hydrodynamical simulations. In addition, the effects of ordinary charged-current interactions with nucleons is addressed in the simulations. Axial symmetry is assumed but no equatorial symmetry is imposed. We show that the heating rates of deuterons reach as high as {approx}10% of those of nucleons around the bottom of the gain region. On the other hand, alpha particles are heated near the shock wave, which is important when the shock wave expands and the density and temperature of matter become low. It is also found that the models with heating by light nuclei evolve differently in the non-linear phase of SASI than do models that lack heating by light nuclei. This result is because matter in the gain region has a varying density and temperature and therefore sub-regions appear that are locally rich in deuterons and alpha particles. Although the light nuclei are never dominant heating sources and they work favorably for shock revival in some cases and unfavorably in other cases, they are non-negligible and warrant further investigation.

Furusawa, Shun; Nagakura, Hiroki; Yamada, Shoichi [Advanced Research Institute for Science and Engineering, Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555 (Japan); Sumiyoshi, Kohsuke, E-mail: furusawa@heap.phys.waseda.ac.jp [Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan)

2013-09-01T23:59:59.000Z

450

A new equation of state with light nuclei and their weak interactions in core-collapse supernova simulations  

SciTech Connect (OSTI)

We perform numerical experiments to investigate the influence of inelastic neutrino reactions with light nuclei on the standing accretion shock instability. The time evolutions of shock waves are calculated with a simple light-bulb approximation for the neutrino transport and a multi-nuclei equation of state. The neutrino absorptions and inelastic interactions with deuterons, tritons, helions and alpha particles are taken into account in the hydrodynamical simulations in addition to the ordinary charged-current interactions with nucleons. Axial symmetry is assumed but no equatorial symmetry is imposed. We show that the heating rates of deuterons reach as high as ? 10% of those of nucleons around the bottom of the gain region. On the other hands, alpha particles heat the matter near the shock wave, which is important when the shock wave expands and density and temperature of matter become low. It is also found that the models with heating by light nuclei have different evolutions from those without it in non-linear evolution phase. The matter in the gain region has various densities and temperatures and there appear regions that are locally rich in deuterons and alpha particles. These results indicate that the inelastic reactions of light nuclei, especially deuterons, should be incorporated in the simulations of core-collapse supernovae.

Furusawa, Shun; Yamada, Shoichi [Waseda University, 3-4-1, Okubo, Shinjuku, Tokyo 169-8555 (Japan); Nagakura, Hiroki [Yukawa Institute for Theoretical Physics, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto, 606-8502 (Japan); Sumiyoshi, Kohsuke [Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan); Suzuki, Hideyuki [Faculty of Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda, Chiba 278-8510 (Japan)

2014-05-02T23:59:59.000Z

451

Final Technical Report: The Effects of Iron Complexing Ligands on the Long Term Ecosystem Response to Iron Enrichment of HNLC waters  

SciTech Connect (OSTI)

Substantial increases in the concentrations of the stronger of two Fe(III) complexing organic ligand classes measured during the mesoscale Fe enrichment studies IronEx II and SOIREE appeared to sharply curtailed Fe availability to diatoms and thus limited the efficiency of carbon sequestration to the deep. Detailed observations during IronEx II (equatorial Pacific Ocean) and SOIREE (Southern Ocean –Pacific sector) indicate that the diatoms began re-experiencing Fe stress even though dissolved Fe concentrations remained elevated in the patch. This surprising outcome likely is related to the observed increased concentrations of strong Fe(III)-complexing ligands in seawater. Preliminary findings from other studies indicate that diatoms may not readily obtain Fe from these chemical species whereas Fe bound by strong ligands appears to support growth of cyanobacteria and nanoflagellates. The difficulty in assessing the likelihood of these changes with in-situ mesoscale experiments is the extended monitoring period needed to capture the long-term trajectory of the carbon cycle. A more detailed understanding of Fe complexing ligand effects on long-term ecosystem structure and carbon cycling is essential to ascertain not only the effect of Fe enrichment on short-term carbon sequestration in the oceans, but also the potential effect of Fe enrichment in modifying ecosystem structure and trajectory.

Cochlan, William P.

2008-06-13T23:59:59.000Z

452

ASSOCIATING LONG-TERM {gamma}-RAY VARIABILITY WITH THE SUPERORBITAL PERIOD OF LS I +61 Degree-Sign 303  

SciTech Connect (OSTI)

Gamma-ray binaries are stellar systems for which the spectral energy distribution (discounting the thermal stellar emission) peaks at high energies. Detected from radio to TeV gamma rays, the {gamma}-ray binary LS I +61 Degree-Sign 303 is highly variable across all frequencies. One aspect of this system's variability is the modulation of its emission with the timescale set by the {approx}26.4960 day orbital period. Here we show that, during the time of our observations, the {gamma}-ray emission of LS I +61 Degree-Sign 303 also presents a sinusoidal variability consistent with the previously known superorbital period of 1667 days. This modulation is more prominently seen at orbital phases around apastron, whereas it does not introduce a visible change close to periastron. It is also found in the appearance and disappearance of variability at the orbital period in the power spectrum of the data. This behavior could be explained by a quasi-cyclical evolution of the equatorial outflow of the Be companion star, whose features influence the conditions for generating gamma rays. These findings open the possibility to use {gamma}-ray observations to study the outflows of massive stars in eccentric binary systems.

Ackermann, M.; Buehler, R. [Deutsches Elektronen Synchrotron DESY, D-15738 Zeuthen (Germany); Ajello, M. [Space Sciences Laboratory, 7 Gauss Way, University of California, Berkeley, CA 94720-7450 (United States); Ballet, J.; Casandjian, J. M. [Laboratoire AIM, CEA-IRFU/CNRS/Universite Paris Diderot, Service d'Astrophysique, CEA Saclay, F-91191 Gif sur Yvette (France); Barbiellini, G. [Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy); Bastieri, D.; Buson, S. [Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy); Bellazzini, R.; Bregeon, J. [Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa (Italy); Bonamente, E.; Cecchi, C. [Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia (Italy); Brandt, T. J. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Brigida, M. [Dipartimento di Fisica ''M. Merlin'' dell'Universita e del Politecnico di Bari, I-70126 Bari (Italy); Bruel, P. [Laboratoire Leprince-Ringuet, Ecole polytechnique, CNRS/IN2P3, F-91128 Palaiseau (France); Caliandro, G. A. [Institute of Space Sciences (IEEE-CSIC), Campus UAB, E-08193 Barcelona (Spain); Cameron, R. A. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Caraveo, P. A. [INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica, I-20133 Milano (Italy); Cavazzuti, E. [Agenzia Spaziale Italiana (ASI) Science Data Center, I-00044 Frascati (Roma) (Italy); Chekhtman, A., E-mail: andrea.caliandro@ieec.uab.es, E-mail: hadasch@ieec.uab.es, E-mail: dtorres@ieec.uab.es [Center for Earth Observing and Space Research, College of Science, George Mason University, Fairfax, VA 22030 (United States); and others

2013-08-20T23:59:59.000Z

453

H$?$ long term monitoring of the Be star $?$ Cep Aa  

E-Print Network [OSTI]

Recent papers published in the last years contributed to resolve the enigma on the hypothetical Be nature of the hot pulsating star $\\beta$ Cep. This star shows variable emission in the H$\\alpha$ line, typical for Be stars, but its projected rotational velocity is very much lower than the critical limit, contrary to what is expected for a typical Be star. The emission has been attributed to the secondary component of the $\\beta$ Cep spectroscopic binary system. In this paper, using both ours and archived spectra, we attempted to recover the H$\\alpha$ profile of the secondary component and to analyze its behavior with time for a long period. To accomplish this task, we first derived the atmospheric parameters of the primary: T$_{\\rm eff}$ = 24000 $\\pm$ 250 K and $\\log g$ = 3.91 $\\pm$ 0.10, then we used these values to compute its synthetic H$\\alpha$ profile and finally we reconstructed the secondary's profile disentangling the observed one. The secondary's H$\\alpha$ profile shows the typical two peaks emission of a Be star with a strong variability. We analyzed also the behavior versus time of some line width parameters: equivalent width, V/R, FWHM, peaks separation and radial velocity of the central depression. Projected rotational velocity ($v \\sin i$) of the secondary and the dimension of the equatorial surrounding disk have been estimated, too.

G. Catanzaro

2008-03-28T23:59:59.000Z

454

THE EXPANDING BIPOLAR SHELL OF THE HELIUM NOVA V445 PUPPIS  

SciTech Connect (OSTI)

From multi-epoch adaptive optics imaging and integral field unit spectroscopy, we report the discovery of an expanding and narrowly confined bipolar shell surrounding the helium nova V445 Puppis (Nova Puppis 2000). An equatorial dust disc obscures the nova remnant, and the outflow is characterized by a large polar outflow velocity of 6720 +- 650 km s{sup -1} and knots moving at even larger velocities of 8450 +- 570 km s{sup -1}. We derive an expansion parallax distance of 8.2 +- 0.5 kpc and deduce a pre-outburst luminosity of the underlying binary of log L/L{sub sun} = 4.34 +- 0.36. The derived luminosity suggests that V445 Puppis probably contains a massive white dwarf accreting at high rate from a helium star companion making it part of a population of binary stars that potentially lead to supernova Ia explosions due to accumulation of helium-rich material on the surface of a massive white dwarf.

Woudt, P. A.; Warner, B. [Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch 7701 (South Africa); Steeghs, D.; Marsh, T. R. [Department of Physics, University of Warwick, Coventry, CV4 7AL (United Kingdom); Karovska, M.; Roelofs, G. H. A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138-1516 (United States); Groot, P. J.; Nelemans, G. [Department of Astrophysics, Radboud University Nijmegen, P.O. Box 9010, 6500 GL, Nijmegen (Netherlands); Nagayama, T. [Department of Astronomy, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502 (Japan); Smits, D. P. [Department of Mathematical Sciences, University of South Africa, UNISA, Pretoria 0003 (South Africa); O'Brien, T., E-mail: Patrick.Woudt@uct.ac.z [University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL (United Kingdom)

2009-11-20T23:59:59.000Z

455

African oil plays  

SciTech Connect (OSTI)

The vast continent of Africa hosts over eight sedimentary basins, covering approximately half its total area. Of these basins, only 82% have entered a mature exploration phase, 9% have had little or no exploration at all. Since oil was first discovered in Africa during the mid-1950s, old play concepts continue to bear fruit, for example in Egypt and Nigeria, while new play concepts promise to become more important, such as in Algeria, Angola, Chad, Egypt, Gabon, and Sudan. The most exciting developments of recent years in African oil exploration are: (1) the Gamba/Dentale play, onshore Gabon; (2) the Pinda play, offshore Angola; (3) the Lucula/Toca play, offshore Cabinda; (4) the Metlaoui play, offshore Libya/Tunisia; (5) the mid-Cretaceous sand play, Chad/Sudan; and (6) the TAG-I/F6 play, onshore Algeria. Examples of these plays are illustrated along with some of the more traditional oil plays. Where are the future oil plays likely to develop No doubt, the Saharan basins of Algeria and Libya will feature strongly, also the presalt of Equatorial West Africa, the Central African Rift System and, more speculatively, offshore Ethiopia and Namibia, and onshore Madagascar, Mozambique, and Tanzania.

Clifford, A.J. (BHP Petroleum, Melbourne, Victoria (Australia))

1989-09-01T23:59:59.000Z

456

Multiple phase estimation in quantum cloning machines  

E-Print Network [OSTI]

Since the initial discovery of the Wootters-Zurek no-cloning theorem, a wide variety of quantum cloning machines have been proposed aiming at imperfect but optimal cloning of quantum states within its own context. Remarkably, most previous studies have employed the Bures fidelity or the Hilbert-Schmidt norm as the figure of merit to characterize the quality of the corresponding cloning scenarios. However, in many situations, what we truly care about is the relevant information about certain parameters encoded in quantum states. In this work, we investigate the multiple phase estimation problem in the framework of quantum cloning machines, from the perspective of quantum Fisher information matrix (QFIM). Focusing on the generalized d-dimensional equatorial states, we obtain the analytical formulas of QFIM for both universal quantum cloning machine (UQCM) and phase-covariant quantum cloning machine (PQCM), and prove that PQCM indeed performs better than UQCM in terms of QFIM. We highlight that our method can be generalized to arbitrary cloning schemes where the fidelity between the single-copy input and output states is input-state independent. Furthermore, the attainability of the quantum Cramer-Rao bound is also explicitly discussed.

Yao Yao; Li Ge; Xing Xiao; Xiao-guang Wang; Chang-pu Sun

2014-07-22T23:59:59.000Z

457

Interfacial Complex Formation in Uranyl Extraction by Tributyl-Phosphate in Dodecane Diluent: A Molecular Dynamics Study  

SciTech Connect (OSTI)

Atomistic simulations have been carried out in a multicomponent two-phase system (aqueous and organic phases in direct contact) to investigate the interfacial molecular mechanisms leading to uranyl extractionfrom the aqueous to organic phase. The aqueous phase consists of the dissolved ions UO2^2+ and nitrate NO3-,with or without H3O+, in water to describe acidic or neutral condition; the organic phase consists of tributyl phosphate, the extractant, in dodecane as the diluent. We find that the interface facilitates the formation of various uranyl complexes, with a general formula UO2^2+(NO3-)n mTBP kH2O, with n + m + k ) 5, suggesting a 5-fold coordination. The coordination for all three molecular entities has the common feature that they all bind to the uranyl at the uranium atom with an oxygen atom in the equatorial plane perpendicular to the molecular axis of the uranyl, forming a 5-fold symmetry plane. Nitric acid has a strong effect in enhancing the formation of extractable species, which is consistent with experimental findings.

de Almeida, Valmor F [ORNL; Cui, Shengting [ORNL; Ye, Xianggui [ORNL; Khomami, Bamin [ORNL

2009-01-01T23:59:59.000Z

458

Uranyl coordination environment in hydrophobic ionic liquids : an in situ investigation.  

SciTech Connect (OSTI)

Different inner-sphere coordination environments are observed for the uranyl nitrate complexes formed with octyl-phenyl-N,N-diisobutylcarbamoylmethylphosphine oxide and tributyl phosphate in dodecane and in the hydrophobic ionic liquids (ILs) [C{sub 4}mim][PF{sub 6}] and [C{sub 8}mim][N(SO{sub 2}CF{sub 3}){sub 2}]. Qualitative differences in the coordination environment of the extracted uranyl species are implied by changes in peak intensity patterns and locations for uranyl UV-visible spectral bands when the solvent is changed. EXAFS data for uranyl complexes in dodecane solutions is consistent with hexagonal bipyramidal coordination and the existence of UO{sub 2}(NO{sub 3}){sub 2}(CMPO){sub 2}. In contrast, the complexes formed when uranyl is transferred from aqueous nitric acid solutions into the ILs exhibit an average equatorial coordination number of approximately 4.5. Liquid/liquid extraction results for uranyl in both ILs indicate a net stoichiometry of UO{sub 2}(NO{sub 3})(CMPO){sup +}. The concentration of the IL cation in the aqueous phase increases in proportion to the amount of UO{sub 2}(NO{sub 3})(CMPO){sup +} in the IL phase, supporting a predominantly cation exchange mechanism for partitioning in the IL systems.

Visser, A. E.; Jensen, M. P.; Laszak, I.; Nash, K. L.; Choppin, G. R.; Roers, R. D.; Chemistry; Univ. of Alabama; Flordia State Univ.

2003-01-01T23:59:59.000Z

459

Anomalous atmospheric hydrologic processes associated with ENSO  

SciTech Connect (OSTI)

In this paper, we study the structure of anomalous atmospheric hydrologic processes associated with El Nino Southern Oscillation (ENSO) using re-analysis data obtained from the Goddard Earth Observing System (GEOS) Data Assimilation Office (DAO) and outputs from GEOS climate model simulations. Our results show a very pronounced tropospheric warming over the equatorial central Pacific, with a double maxima located in 15{degrees}N and 15{degrees}/S, symmetric about the equator. This anomaly is in agreement with those found in earlier studies based on satellite estimates and is consistent with the predictions of Rossby wave dynamics. Most interestingly, we find a strong stratospheric temperature signal, which is tightly coupled to, but of opposite sign to the tropospheric anomaly. This temperature anomaly pattern is validated by the GCM simulations with respect to anomalous ENSO sea surface temperature (SST) forcing. The role of interaction between radiation and hydrologic cycle in producing and maintaining the ENSO anomalies is also investigated. 8 refs., 4 figs.

Lau, K.M.; Ho, C.H. [NASA/Goddard Space Flight Center, Greenbelt, MD (United States)

1997-11-01T23:59:59.000Z

460

The Barrier Layer of the Atlantic Warmpool: Formation Mechanism and Influence on the Mean Climate  

SciTech Connect (OSTI)

Many Coupled General Circulation Models (CGCMs) tend to overestimate the salinity in the Atlantic warm pool or the Northwestern Tropical Atlantic (NWTA) and underestimate the surface salinity in the subtropical salinity maxima region. Most of these models also suffer from a sea-surface temperature (SST) bias in the NWTA region, leading to suggestions that the upper ocean salinity stratification may need to be improved in order to improve the Barrier Layer (BL) simulations and thus the SST through BL-SST-Intertropical Convergence Zone (ITCZ) feedbacks. In the present study, we use a CGCM to perform a set of idealized numerical experiments to test and understand the sensitivity of the BL and consequently SST in the NWTA region to freshwater flux and hence the upper ocean salinity stratification. We find that the BL of the NWTA is sensitive to upper ocean salinity changes in the Amazon river discharge region and the subtropical salinity maxima region. The BL phenomenon is further manifested by the formation of winter temperature inversions in our model simulations, the maximum magnitude of inversions being about 0.20 C. The atmo- spheric response causes a statistically significant reduction of mean precipitation and SST in the equatorial Atlantic region and helps improve the respective biases by 10-15 %. In the region of improved BL simulation, the SST change is positive and in the right direction of bias correction, albeit weak.

Balaguru, Karthik; Chang, P.; Saravanan, R.; Jang, C. J.

2012-04-20T23:59:59.000Z

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461

String dynamics and ejection along the axis of a spinning black hole  

E-Print Network [OSTI]

Relativistic current carrying strings moving axisymmetrically on the background of a Kerr black hole are studied. The boundaries and possible types of motion of a string with a given energy and current are found. Regions of parameters for which the string falls into the black hole, or is trapped in a toroidal volume, or can escape to infinity, are identified, and representative trajectories are examined by numerical integration, illustrating various interesting behaviors. In particular, we find that a string can start out at rest near the equatorial plane and, after bouncing around, be ejected out along the axis, some of its internal (elastic or rotational kinetic) energy having been transformed into translational kinetic energy. The resulting velocity can be an order unity fraction of the speed of light. This process results from the presence of an outer tension barrier and an inner angular momentum barrier that are deformed by the gravitational field. We speculatively discuss the possible astrophysical significance of this mechanism as a means of launching a collimated jet of MHD plasma flux tubes along the spin axis of a gravitating system fed by an accretion disk.

Ted Jacobson; Thomas P. Sotiriou

2009-03-26T23:59:59.000Z

462

Discovery of a nearby twin of SN1987A's nebula around the luminous blue variable HD168625: Was Sk--69 202 an LBV?  

E-Print Network [OSTI]

Spitzer images of the luminous blue variable (LBV) candidate HD168625 reveal the existence of a bipolar nebula several times larger than its previously-known equatorial dust torus. The outer nebula of HD168625 has a full extent of about 80 arcsec or 0.85 pc, and one of the lobes has a well-defined polar ring. The nebula is a near twin of the triple-ring system around SN1987A. Because of these polar rings, and accounting for stellar/progenitor luminosity, HD168625 is an even closer twin of SN1987A than the B supergiant Sher 25 in NGC3603. HD168625's nebula was probably ejected during a giant LBV eruption and not during a red supergiant phase, so its similarity to the nebula around SN1987A may open new possibilities for the creation of SN1987A's rings. Namely, the hypothesis that Sk-69 202 suffered an LBV-like eruption would avert the complete surrender of single star models for its bipolar nebula by offering an alternative to an unlikely binary merger scenario. It also hints that LBVs are the likely progenitors of some type II supernovae, and that HD168625's nebula is a good example of a pre-explosion environment.

Nathan Smith

2006-11-16T23:59:59.000Z

463

Relativistic stabilisation of the diocotron instability in a pulsar "cylindrical" electrosphere  

E-Print Network [OSTI]

In a previous work, we showed that the differentially rotating equatorial disk in the pulsar's electrosphere is diocotron unstable in the non-relativistic regime. In this paper, we extend these results and study the relativistic and electromagnetic stabilisation effects by including the magnetic field perturbation and allow for relativistic speeds of the guiding centre, in a self-consistent manner. We use the electric drift approximation, valid for low-density plasmas. We linearise the coupled relativistic cold-fluid and Maxwell equations in the electric drift approximation. The non-linear eigenvalue problem for the perturbed azimuthal electric field is solved numerically with standard technics for boundary value problems like the shooting method. The spectrum of the relativistic diocotron instability in a non-neutral plasma column confined between two cylindrically conducting walls is computed. For low-speed motions, we recover the eigenfunctions and eigenspectra of the non-relativistic diocotron instability. Our algorithm is also checked in the relativistic planar diode geometry for which an analytical expression of the dispersion relation is known. As expected, when the relativistic and electromagnetic effects become significant, the diocotron instability tends to stabilise. In cylindrical geometry, for some special rotation profile, all azimuthal modes $l$ are completely suppressed for sufficiently relativistic flows. However, for the profile relevant to the electrosphere, depending on the exact rotation curves, the growth rates can either significantly decrease till they vanish or persist for moderate $l$.

J. Petri

2007-04-20T23:59:59.000Z

464

The diocotron instability in a pulsar cylindrical electrosphere  

E-Print Network [OSTI]

The physics of the pulsar inner magnetosphere remains poorly constrained by observations. Although about 2000 pulsars have been discovered to date, little is known about their emission mechanism. Large vacuum gaps probably exist and a non-neutral plasma made of electrons in some regions and of positrons in some other regions fills space to form an electrosphere. The purpose of this work is to study the stability properties of the differentially rotating equatorial disk in the pulsar's electrosphere for which the magnetic field is assumed to be dipolar. In contrast to previous studies, the magnetic field is not restricted to be uniform. A pseudo-spectral Galerkin method using Tchebyshev polynomials expansion is developed to compute the spectrum of the diocotron instability in a non-neutral plasma column confined between two cylindrically conducting walls. Moreover, the inner wall carries a given charge per unit length in order to account for the presence of a charged neutron star at the centre of the electrosphere. We show several eigenfunctions and eigenspectra obtained for different initial density profiles and electromagnetic field configurations useful for laboratory plasmas. The algorithm is very efficient in computing the fastest growing modes. Applications to a cylindrical electrosphere are also shown for several differential rotation profiles. It is found that the growth rates of the diocotron instability are of the same order of magnitude as the rotation rate.

J. Petri

2006-11-30T23:59:59.000Z

465

North-south asymmetry in solar activity: predicting the amplitude of the next solar cycle  

E-Print Network [OSTI]

Using Greenwich and SOON sunspot group data during the period 1874 -- 2005, we find that the sums of the areas of the sunspot groups in $0^\\circ$ -- $10^\\circ$ latitude-interval of the Sun's northern hemisphere and in the time-interval, minus 1.35 year to plus 2.15 year from the time of the preceding minimum--and in the same latitude interval of the southern hemisphere but plus 1.0 year to plus 1.75 year from the time of the maximum--of a sunspot cycle are well correlating with the amplitude (maximum of the smoothed monthly sunspot number) of its immediate following cycle. Using this relationship it is possible to predict the amplitude of a sunspot cycle by about 9 -- 13 years in advance. We predicted $74 \\pm 10$ for the amplitude of the upcoming cycle~24. Variations in solar meridional flows during solar cycles and 9 -- 16 year variations in solar equatorial rotation may be responsible for the aforementioned relationship.

J. Javaraiah

2007-01-31T23:59:59.000Z

466

Convective Dynamo Simulation with a Grand Minimum  

E-Print Network [OSTI]

The global-scale dynamo action achieved in a simulation of a Sun-like star rotating at thrice the solar rate is assessed. The 3-D MHD Anelastic Spherical Harmonic (ASH) code, augmented with a viscosity minimization scheme, is employed to capture convection and dynamo processes in this G-type star. The simulation is carried out in a spherical shell that encompasses 3.8 density scale heights of the solar convection zone. It is found that dynamo action with a high degree of time variation occurs, with many periodic polarity reversals occurring roughly every 6.2 years. The magnetic energy also rises and falls with a regular period. The magnetic energy cycles arise from a Lorentz-force feedback on the differential rotation, whereas the processes leading to polarity reversals are more complex, appearing to arise from the interaction of convection with the mean toroidal fields. Moreover, an equatorial migration of toroidal field is found, which is linked to the changing differential rotation, and potentially to a no...

Augustson, Kyle; Miesch, Mark; Toomre, Juri

2015-01-01T23:59:59.000Z

467

Light Loop Echoes and Blinking Black Holes  

E-Print Network [OSTI]

Radiation emitted near a black hole reaches the observer by multiple paths; and when this radiation varies in time, the time-delays between the various paths generate a "blinking" effect in the observed light curve L(t) or its auto-correlation function xi(T)= . For the particularly important "face-on" configuration (in which the hole is viewed roughly along its spin axis, while the emission comes roughly from its equatorial plane -- e.g. from the inner edge of its accretion disk, or from the violent flash of a nearby/infalling star) we calculate the blinking in detail by computing the time delay Delta t_{j}(r,a) and magnification mu_{j}(r,a) of the jth path (j=1,2,3,...), relative to the primary path (j=0), as a function of the emission radius r and black hole spin 0

468

A 3D Search for Companions to 12 Nearby M-Dwarfs  

E-Print Network [OSTI]

We present a carefully vetted equatorial ($\\pm$ 30$^\\circ$ Decl.) sample of all known single (within 4'') mid M-dwarfs (M2.5V-M8.0V) extending out to 10 pc; their proximity and low masses make them ideal targets for planet searches. For this sample of 58 stars, we provide V$_J$, R$_{KC}$, I$_{KC}$ photometry, new low dispersion optical ($6000 - 9000$\\AA) spectra from which uniform spectral types are determined, multi-epoch H$\\alpha$ equivalent widths, and gravity sensitive $Na\\,I$ indices. For 12 of these 58 stars, strict limits are placed on the presence of stellar and sub-stellar companions, based on a pioneering program described here that utilizes precise infrared radial velocities and optical astrometric measurements in an effort to search for Jupiter-mass, brown dwarf and stellar-mass companions. Our infrared radial velocity precision using CSHELL at NASA's IRTF is $\\sim$90 m s$^{-1}$ over timescales from 13 days to 5 years. With our spectroscopic results the mean companion masses that we rule out of ex...

Davison, Cassy L; Henry, Todd J; Riedel, Adric R; Jao, Wei-Chun; Bailey, John I; Quinn, Samuel N; Cantrell, Justin R; Subasavage, John P; Winters, Jen G

2015-01-01T23:59:59.000Z

469

The Status of USITER Diagnostic Port Plug Neutronics Analysis Using Attila  

SciTech Connect (OSTI)

USITER is one of seven partner domestic agencies (DA) contributing components to the ITER project. Four diagnostic port plug packages (two equatorial ports and two upper ports) will be engineered and fabricated by Princeton Plasma Physics Lab (PPPL). Diagnostic port plugs as illustrated in Fig. 1 are large primarily stainless steel structures that serve several roles on ITER. The port plugs are the primary vacuum seal and tritium confinement barriers for the vessel. The port plugs also house several plasma diagnostic systems and other machine service equipment. Finally, each port plug must shield high energy neutrons and gamma photons from escaping and creating radiological problems in maintenance areas behind the port plugs. The optimization of the balance between adequate shielding and the need for high performance, high throughput diagnostics systems is the focus of this paper. Neutronics calculations are also needed for assessing nuclear heating and nuclear damage in the port plug and diagnostic components. Attila, the commercially available discrete-ordinates software package, is used for all diagnostic port plug neutronics analysis studies at PPPL.

Feder, Russell [1; Youssef, Mahamoud [2; Klabacha, Jonathan [1

2013-11-01T23:59:59.000Z

470

R3 fluids  

E-Print Network [OSTI]

With regard to large-scale astrophysical systems, the current paper deals with (i) formulation of tensor virial equations from the standpoint of analytical mechanics; (ii) investigation on the role of systematic and random motions for virial equilibrium configurations; (iii) extent to which systematic and random motions are equivalent in changing a fluid shape. The tensor virial equations are formulated using analytical mechanics, and the self potential-energy tensor is shown to be symmetric. The role of systematic and random motions in collisionless, ideal, self-gravitating fluids, is analysed in detail including radial and tangential velocity dispersion on the equatorial plane. R3 fluids are defined as ideal, self-gravitating fluids in virial equilibrium, with systematic rotation around a principal axis of inertia, and ihe related virial equations are formulated. A unified theory of systematic and random motions is developed for R3 fluids, taking into consideration imaginary rotation. The effect of random motion excess is shown to be equivalent to an additional real or imaginary rotation, respectively, inducing flattening or elongation. R3 fluids are found to admit adjoint configurations with isotropic random velocity distribution. Further constraints are established on the amount of random velocity anisotropy along the principal axes, for triaxial configurations. A necessary condition is formulated for the occurrence of bifurcation points from axisymmetric to triaxial configurations in virial equilibrium, which is independent of the anisotropy parameters. In the special case of homeoidally striated Jacobi ellipsoid, some previously known results are reproduced.

R. Caimmi

2006-07-27T23:59:59.000Z

471

The Thermal Environment of the Fiber Glass Dome for the New Solar Telescope at Big Bear Solar Observatory  

E-Print Network [OSTI]

The New Solar Telescope (NST) is a 1.6-meter off-axis Gregory-type telescope with an equatorial mount and an open optical support structure. To mitigate the temperature fluctuations along the exposed optical path, the effects of local/dome-related seeing have to be minimized. To accomplish this, NST will be housed in a 5/8-sphere fiberglass dome that is outfitted with 14 active vents evenly spaced around its perimeter. The 14 vents house louvers that open and close independently of one another to regulate and direct the passage of air through the dome. In January 2006, 16 thermal probes were installed throughout the dome and the temperature distribution was measured. The measurements confirmed the existence of a strong thermal gradient on the order of 5 degree Celsius inside the dome. In December 2006, a second set of temperature measurements were made using different louver configurations. In this study, we present the results of these measurements along with their integration into the thermal control system (ThCS) and the overall telescope control system (TCS).

A. P. Verdoni; C. Denker; J. R. Varsik; S. Shumko; J. Nenow; R. Coulter

2007-08-04T23:59:59.000Z

472

Spatio-temporal statistical models with applications to atmospheric processes  

SciTech Connect (OSTI)

This doctoral dissertation is presented as three self-contained papers. An introductory chapter considers traditional spatio-temporal statistical methods used in the atmospheric sciences from a statistical perspective. Although this section is primarily a review, many of the statistical issues considered have not been considered in the context of these methods and several open questions are posed. The first paper attempts to determine a means of characterizing the semiannual oscillation (SAO) spatial variation in the northern hemisphere extratropical height field. It was discovered that the midlatitude SAO in 500hPa geopotential height could be explained almost entirely as a result of spatial and temporal asymmetries in the annual variation of stationary eddies. It was concluded that the mechanism for the SAO in the northern hemisphere is a result of land-sea contrasts. The second paper examines the seasonal variability of mixed Rossby-gravity waves (MRGW) in lower stratospheric over the equatorial Pacific. Advanced cyclostationary time series techniques were used for analysis. It was found that there are significant twice-yearly peaks in MRGW activity. Analyses also suggested a convergence of horizontal momentum flux associated with these waves. In the third paper, a new spatio-temporal statistical model is proposed that attempts to consider the influence of both temporal and spatial variability. This method is mainly concerned with prediction in space and time, and provides a spatially descriptive and temporally dynamic model.

Wikle, C.K.

1996-12-31T23:59:59.000Z

473

Must we use ferritic steel in TBM?  

SciTech Connect (OSTI)

Mock-ups of DEMO breeding blankets, called Test Blanket Modules (TBMs), inserted and tested in ITER in dedicated equatorial ports directly facing the plasma, are expected to provide the first experimental answers on the necessary performance of the corresponding DEMO breeding blankets. Several DEMO breeding blanket designs have been studied and assessed in the last 20 years. At present, after considering various coolant and breeder combinations, all the TBM concepts proposed by the seven ITER Parties use Reduced-Activation Ferritic/Martensitic (RAFM) steel as the structural material. In order to perform valuable tests in ITER, the TBMs are expected to use the same structural material as corresponding DEMO blankets. However, due to the fact that this family of steels is ferromagnetic, their presence in the ITER vacuum vessel will create perturbations of the ITER magnetic fields that could reduce the quality of the plasma confinement during H-mode. As a consequence, a legitimate question has been raised on the necessity of using RAFM steel for TBMs structural material in ITER. By giving a short description of the main TBM testing objectives in ITER and assessing the consequences of not using such a material, this paper gives a comprehensive answer to this question. According to the working group author of the study, the use of RAFM steel as structural material for TBM is judged mandatory.

Salavy, Jean-Francois; Boccaccini, Lorenzo V.; Chaudhuri, Paritosh; Cho, Seungyon; Enoeda, Mikio; Giancarli, Luciano; Kurtz, Richard J.; Luo, Tian Y.; Rao, K. Bhanu Sankara; Wong, Clement

2010-12-13T23:59:59.000Z

474

Power Spectrum Analysis of Physikalisch-Technische Bundesanstalt Decay-Rate Data: Evidence for Solar Rotational Modulation  

E-Print Network [OSTI]

Evidence for an anomalous annual periodicity in certain nuclear decay data has led to speculation concerning a possible solar influence on nuclear processes. We have recently analyzed data concerning the decay rates of Cl-36 and Si-32, acquired at the Brookhaven National Laboratory (BNL), to search for evidence that might be indicative of a process involving solar rotation. Smoothing of the power spectrum by weighted-running-mean analysis leads to a significant peak at frequency 11.18/yr, which is lower than the equatorial synodic rotation rates of the convection and radiative zones. This article concerns measurements of the decay rates of Ra-226 acquired at the Physikalisch-Technische Bundesanstalt (PTB) in Germany. We find that a similar (but not identical) analysis yields a significant peak in the PTB dataset at frequency 11.21/yr, and a peak in the BNL dataset at 11.25/yr. The change in the BNL result is not significant since the uncertainties in the BNL and PTB analyses are estimated to be 0.13/yr and 0.07/yr, respectively. Combining the two running means by forming the joint power statistic leads to a highly significant peak at frequency 11.23/yr. We comment briefly on the possible implications of these results for solar physics and for particle physics.

P. A. Sturrock; J. B. Buncher; E. Fischbach; J. T. Gruenwald; D. Javorsek II; J. H. Jenkins; R. H. Lee; J. J. Mattes; J. R. Newport

2010-10-11T23:59:59.000Z

475

Searching for Star-Planet interactions within the magnetosphere of HD 189733  

E-Print Network [OSTI]

HD 189733 is a K2 dwarf, orbited by a giant planet at 8.8 stellar radii. In order to study magnetospheric interactions between the star and the planet, we explore the large-scale magnetic field and activity of the host star. We collected spectra using the ESPaDOnS and the NARVAL spectropolarimeters, installed at the 3.6-m Canada-France-Hawaii telescope and the 2-m Telescope Bernard Lyot at Pic du Midi, during two monitoring campaigns (June 2007 and July 2008). HD 189733 has a mainly toroidal surface magnetic field, having a strength that reaches up to 40 G. The star is differentially rotating, with latitudinal angular velocity shear of domega = 0.146 +- 0.049 rad/d, corresponding to equatorial and polar periods of 11.94 +- 0.16 d and 16.53 +- 2.43 d respectively. The study of the stellar activity shows that it is modulated mainly by the stellar rotation (rather than by the orbital period or the beat period between the stellar rotation and the orbital periods). We report no clear evidence of magnetospheric int...

Fares, R; Moutou, C; Jardine, M M; Griessmeier, J -M; Zarka, P; Shkolnik, E L; Bohlender, D; Catala, C; Cameron, A C

2010-01-01T23:59:59.000Z

476

The Post-Eruptive Evolution of a Coronal Dimming  

E-Print Network [OSTI]

We discuss the post-eruptive evolution of a "coronal dimming" based on observations of the EUV corona from the Solar and Heliospheric Observatory and the Transition Region and Coronal Explorer. This discussion highlights the roles played by magnetoconvection-driven magnetic reconnection and the global magnetic environment of the plasma in the "filling" and apparent motion of the region following the eruption of a coronal mass ejection (CME). A crucial element in our understanding of the dimming region evolution is developed by monitoring the disappearance and reappearance of bright TRACE "moss" around the active region giving rise to the CME. We interpret the change in the TRACE moss as a proxy of the changing coronal magnetic field topology behind the CME front. We infer that the change in global magnetic topology also results in a shift of energy balance in the process responsible for the production of the moss emission while the coronal magnetic topology evolves from closed, to open and back to closed again because, following the eruption, the moss reforms around the active region in almost exactly its pre-event configuration. As a result of the moss evolution, combining our discussion with recent spectroscopic results of an equatorial coronal hole, we suggest that the interchangeable use of the term "transient coronal hole" to describe a coronal dimming is more than just a simple coincidence.

Scott W. McIntosh; Robert J. Leamon; Alisdair R. Davey; Meredith J. Wills-Davey

2007-01-11T23:59:59.000Z

477

Feeding versus Feedback in NGC4151 probed with Gemini NIFS. II. Kinematics  

E-Print Network [OSTI]

We have used the Gemini NIFS to map the gas kinematics of the inner 200x500pc of the Seyfert galaxy NGC4151 in the Z, J, H and K bands at a resolving power 5000 and spatial resolution of 8pc. The ionised gas emission is most extended along the known ionisation bi-cone at position angle PA=60-240deg, but is observed also along its equatorial plane. This indicates that the AGN ionizes gas beyond the borders of the bi-cone, within a sphere with 1arcsec radius around the nucleus. The ionised gas has three kinematic components: (1) one observed at the systemic velocity and interpreted as originating in the galaxy disk; (2) one outflowing along the bi-cone, with line-of-sight velocities between -600 and 600 km/s and strongest emission at +/-(100-300)km/s; (3) and another component due to the interaction of the radio jet with ambient gas. The mass outflow rate, estimated to be 1 M_Sun/yr along each cone, exceeds the inferred black hole accretion rate by a factor of 100. There is no evidence in our data for the gradu...

Storchi-Bergmann, T; McGregor, P J; Riffel, Rogemar A; Beck, T; Martini, P

2009-01-01T23:59:59.000Z

478

Planetary Nebulae Principles & Paradigms: Binaries, Accretion, Magnetic Fields  

E-Print Network [OSTI]

Observations suggest that many, if not all, post AGB systems evolve through an aspherical outflow phase. Such outflows require a sufficient engine rotational energy which binaries can provide. Via common envelope evolution, binaries can directly eject equatorial outflows or produce poloidal outflows from magnetized accretion disks around the primary or secondary. We discuss how accretion driven magnetohydrodynamic outflow models all make similar predictions for the outflow power and speed and we distinguish between the launch vs. propagation regimes of such outflows. We suggest that the high velocity bipolar outflows observed in planetary nebulae (PNe) and the lower velocity but higher power bipolar outflows observed in pre-PNe (pPNe) are kinematically consistent with time dependent accretion onto a white dwarf (WD) within a depleting envelope. Since the WD primary core is always present in all post-AGB systems, accretion onto this core is potentially common. Previous work has focused on core accretion from sub-stellar companions, but low mass stellar companions may be more important, and further work is needed.

Eric G. Blackman; Jason T. Nordhaus

2007-10-01T23:59:59.000Z

479

Searches for Point-like and extended neutrino sources close to the Galactic Centre using the ANTARES neutrino Telescope  

E-Print Network [OSTI]

A search for cosmic neutrino sources using six years of data collected by the ANTARES neutrino telescope has been performed. Clusters of muon neutrinos over the expected atmospheric background have been looked for. No clear signal has been found. The most signal-like accumulation of events is located at equatorial coordinates RA=$-$46.8$^{\\circ}$ and Dec=$-$64.9$^{\\circ}$ and corresponds to a 2.2$\\sigma$ background fluctuation. In addition, upper limits on the flux normalization of an E$^{-2}$ muon neutrino energy spectrum have been set for 50 pre-selected astrophysical objects. Finally, motivated by an accumulation of 7 events relatively close to the Galactic Centre in the recently reported neutrino sample of the IceCube telescope, a search for point sources in a broad region around this accumulation has been carried out. No indication of a neutrino signal has been found in the ANTARES data and upper limits on the flux normalization of an E$^{-2}$ energy spectrum of neutrinos from point sources in that region have been set. The 90% confidence level upper limits on the muon neutrino flux normalization vary between 3.5 and 5.1$\\times$10$^{-8}$ GeV$\\,$cm$^{-2}$s$^{-1}$, depending on the exact location of the source.

ANTARES Collaboration; S. Adrián-Martínez; A. Albert; M. André; M. Anghinolfi; G. Anton; M. Ardid; J. -J. Aubert; B. Baret; J. Barrios-Martí; S. Basa; V. Bertin; S. Biagi; C. Bogazzi; R. Bormuth; M. Bou-Cabo; M. C. Bouwhuis; R. Bruijn; J. Brunner; J. Busto; A. Capone; L. Caramete; C. Cârloganu; J. Carr; T. Chiarusi; M. Circella; L. Core; H. Costantini; P. Coyle; A. Creusot; C. Curtil; G. De Rosa; I. Dekeyser; A. Deschamps; G. De Bonis; C. Distefano; C. Donzaud; D. Dornic; Q. Dorosti; D. Drouhin; A. Dumas; T. Eberl; D. Elsässer; A. Enzenhöfer; S. Escoffier; K. Fehn; I. Felis; P. Fermani; F. Folger; L. A. Fusco; S. Galatà; P. Gay; S. Geißelsöder; K. Geyer; V. Giordano; A. Gleixner; J. P. Gómez-González; K. Graf; G. Guillard; H. van Haren; A. J. Heijboer; Y. Hello; J. J. Hernández-Rey; B. Herold; A. Herrero; J. Hößl; J. Hofestädt; C. W James; M. de Jong; M. Kadler; O. Kalekin; U. Katz; D. Kießling; P. Kooijman; A. Kouchner; I. Kreykenbohm; V. Kulikovskiy; R. Lahmann; E. Lambard; G. Lambard; D. Lattuada; D. Lefèvre; E. Leonora; H. Loehner; S. Loucatos; S. Mangano; M. Marcelin; A. Margiotta; J. A. Martínez-Mora; S. Martini; A. Mathieu; T. Michael; P. Migliozzi; C. Mueller; M. Neff; E. Nezri; D. Palioselitis; G. E. P?v?la?; C. Perrina; P. Piattelli; V. Popa; T. Pradier; C. Racca; G. Riccobene; R. Richter; K. Roensch; A. Rostovtsev; M. Saldaña; D. F. E. Samtleben; A. Sánchez-Losa; M. Sanguineti; P. Sapienza; J. Schmid; J. Schnabe; S. Schulte; F. Schüssler; T. Seitz; C. Sieger; A. Spies; M. Spurio; J. J. M. Steijger; Th. Stolarczyk; M. Taiuti; C. Tamburini; Y. Tayalati; A. Trovato; B. Vallage; C. Vallée; V. Van Elewyck; E. Visser; D. Vivolo; S. Wagner; J. Wilms; E. de Wolf; K. Yatkin; H. Yepes; J. D. Zornoza; J. Zúñiga

2014-02-25T23:59:59.000Z

480

Common origin of positive ionospheric storms at middle latitudes and the geomagnetic activity effect at low latitudes  

SciTech Connect (OSTI)

The author looks for a correlation between two different atmospheric effects. They are a positive atmospheric storm (an anomalous increase in the F2 region ionization density), observed at middle latitudes, and the geomagnetic activity effect (the anomalous changes of temperature and gas density seen in the thermosphere), observed at low latitudes. A temporal correlation is sought to test the argument that both of these effects are the result of travelling atmospheric disturbances (TAD). A TAD is a pulselike atmospheric wave thought to be generated by substorm activity, and to propagate with high velocity (600 m/s) from polar latitudes toward equatorial latitudes. The author looks at data from five separate events correlating magnetic, ionospheric, and neutral atmospheric measurements. The conclusion is that there is a positive correlation between magnetic substorm activity at high latitudes, and positive ionospheric storms at middle latitudes and geomagnetic activity at low latitudes. The time correlations are consistent with high propagation speeds between these events. The author also presents arguments which indicate that the middle latitude positive ionospheric storms are not the result of electric field effects.

Proelss, G.W. (Universitaet Bonn (Germany))

1993-04-01T23:59:59.000Z

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481

Glass-like slow dynamics in a colloidal solid with multiple ground states  

E-Print Network [OSTI]

We study the phase ordering dynamics of a two dimensional model colloidal solid using molecular dynamics simulations. The colloid particles interact with each other with a Hamaker potential modified by the presence of equatorial "patches" of attractive and negative regions. The total interaction potential between two such colloids is, therefore, strongly directional and has three-fold symmetry. Working in the canonical ensemble, we determine the tentative phase diagram in the density-temperature plane which features three distinct crystalline ground states viz, a low density honeycomb solid followed by a rectangular solid at higher density, which eventually transforms to a close packed triangular structure as the density is increased further. We show that when cooled rapidly from the liquid phase along isochores, the system undergoes a transition to a "strong glass" while slow cooling gives rise to crystalline phases. We claim that geometrical frustration arising from the presence of many crystalline ground states causes glassy ordering and dynamics in this solid. Our results may be easily confirmed by suitable experiments on patchy colloids.

Chandana Mondal; Smarajit Karmakar; Surajit Sengupta

2014-12-26T23:59:59.000Z

482

Optimization of the Orbiting Wide-angle Light Collectors (OWL) Mission for Charged-Particle and Neutrino Astronomy  

E-Print Network [OSTI]

OWL uses the Earth's atmosphere as a vast calorimeter to fully enable the emerging field of charged-particle astronomy with high-statistics measurements of ultra-high-energy cosmic rays (UHECR) and a search for sources of UHE neutrinos and photons. Confirmation of the Greisen-Zatsepin-Kuzmin (GZK) suppression above ~4 x 10^19 eV suggests that most UHECR originate in astrophysical objects. Higher energy particles must come from sources within about 100 Mpc and are deflected by ~1 degree by predicted intergalactic/galactic magnetic fields. The Pierre Auger Array, Telescope Array and the future JEM-EUSO ISS mission will open charged-particle astronomy, but much greater exposure will be required to fully identify and measure the spectra of individual sources. OWL uses two large telescopes with 3 m optical apertures and 45 degree FOV in near-equatorial orbits. Simulations of a five-year OWL mission indicate ~10^6 km^2 sr yr of exposure with full aperture at ~6 x 10^19 eV. Observations at different altitudes and sp...

Krizmanic, John F; Streitmatter, Robert E

2013-01-01T23:59:59.000Z

483

Simulations of the symbiotic recurrent nova V407 Cyg. I. Accretion and shock evolutions  

E-Print Network [OSTI]

The shock interaction and evolution of nova ejecta with a wind from a red giant star in a symbiotic binary system are investigated via three-dimensional hydrodynamics simulations. We specifically model the March 2010 outburst of the symbiotic recurrent nova V407~Cygni from the quiescent phase to its eruption phase. The circumstellar density enhancement due to wind-white dwarf interaction is studied in detail. It is found that the density-enhancement efficiency depends on the ratio of the orbital speed to the red giant wind speed. Unlike another recurrent nova, RS~Ophiuchi, we do not observe a strong disk-like density enhancement, but instead observe an aspherical density distribution with $\\sim 20\\%$ higher density in the equatorial plane than at the poles. To model the 2010 outburst, we consider several physical parameters, including the red giant mass loss rate, nova eruption energy, and ejecta mass. A detailed study of the shock interaction and evolution reveals that the interaction of shocks with the red ...

Pan, Kuo-Chuan; Taam, Ronald E

2015-01-01T23:59:59.000Z

484

Control power in perfect controlled teleportation via partially entangled channels  

E-Print Network [OSTI]

We analyze and evaluate perfect controlled teleportation via three-qubit entangled channels from the point of view of the controller. The key idea in controlled teleportation is that the teleportation is performed only with the participation of the controller. We calculate a quantitative measure of the controller's power and establish a lower bound on the control power required for controlled teleportation. We show that the maximally entangled GHZ state is a suitable channel for controlled teleportation of arbitrary single qubits - the controller's power meets the bound and the teleportation fidelity without the controller's permission is no better than the fidelity of a classical channel. We also construct partially entangled channels that exceed the bound for controlled teleportation of a restricted set of states called the equatorial states. We calculate the minimum entanglement required in these channels to exceed the bound. Moreover, we find that in these restricted controlled teleportation schemes, the partially entangled channels can outperform maximally entangled channels with respect to the controller's power. Our results provide a new perspective on controlled teleportation schemes and are of practical interest since we propose useful partially entangled channels.

Xi-Han Li; Shohini Ghose

2014-10-05T23:59:59.000Z

485

Ocean Carbon Cycle Data from the Joint Global Ocean Flux Study (JGOFS)  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The U.S. JGOFS program, a component of the U.S Global Change Research Program, grew out of the recommendations of a National Academy of Sciences workshop in 1984. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP). Data are available throughout the U.S. JGOFS web site at http://usjgofs.whoi.edu/ and from the U.S. JGOFS Data System at http://usjgofs.whoi.edu/jg/dir/jgofs/. Major named segments of the project are: Bermuda Atlantic Time Series (BATS) Study, Hawaii Ocean Time-series (HOT) Study, Equatorial Pacific Process Study, North Atlantic Bloom Experiment (1989), Arabian Sea Process Study, and the Southern Ocean Process Study.

486

Magnetic field effects on the thermonuclear combustion front of Chandrasekhar mass white dwarfs  

E-Print Network [OSTI]

The explosion of a type Ia supernova starts in a white dwarf as a laminar deflagration at the center of the star and soon several hydrodynamic instabilities, in particular, the Rayleigh-Taylor instability, begin to act. A cellular stationary combustion and a turbulent combustion regime are rapidly achieved by the flame and maintained up to the end of the so-called flamelet regime when the transition to detonation is believed to occur. The burning velocity at these regimes is well described by the fractal model of combustion. Using a semi-analytic approach, we describe the effect of magnetic fields on the fractalization of the front considering a white dwarf with a nearly dipolar magnetic field. We find an intrinsic asymmetry on the velocity field that may be maintained up to the free expansion phase of the remnant. Considering the strongest values inferred for a white dwarf's magnetic fields with strengths up to $10^{8}-10^{9}$ G at the surface and assuming that the field near the centre is roughly 10 times greater, asymmetries in the velocity field higher than $10-20 %$ are produced between the magnetic polar and the equatorial axis of the remnant which may be related to the asymmetries found from recent spectropolarimetric observations of very young SN Ia remnants. Dependence of the asymmetry with white dwarf composition is also analyzed.

Cristian R. Ghezzi; Elisabete M. de Gouveia Dal Pino; Jorge E. Horvath

2000-12-06T23:59:59.000Z

487

Spreading of thermonuclear flames on the neutron star in SAX J1808.4-3658: an observational tool  

E-Print Network [OSTI]

We analyse archival Rossi X-Ray Timing Explorer (RXTE) proportional counter array (PCA) data of thermonuclear X-ray bursts from the 2002 outburst of the accreting millisecond pulsar SAX J1808.4-3658. We present evidence of nonmonotonic variations of oscillation frequency during burst rise, and correlations among the time evolution of the oscillation frequency, amplitude, and the inferred burning region area. We also discuss that the amplitude and burning region area evolutions are consistent with thermonuclear flame spreading on the neutron star surface. Based on this discussion, we infer that for the 2002 Oct. 15 thermonuclear burst, the ignition likely occured in the mid-latitudes, the burning region took ~ 0.2 s to nearly encircle the equatorial region of the neutron star, and after that the lower amplitude oscillation originated from the remaining asymmetry of the burning front in the same hemisphere where the burst ignited. Our observational findings and theoretical discussion indicate that studies of the evolution of burst oscillation properties during burst rise can provide a powerful tool to understand thermonuclear flame spreading on neutron star surfaces under extreme physical conditions.

Sudip Bhattacharyya; Tod E. Strohmayer

2006-04-03T23:59:59.000Z

488

Solar-wind minor ions: recent observations  

SciTech Connect (OSTI)

During the years following the Solar Wind Four Conference at Burghausen our knowledge of the solar wind ion composition and dynamics has grown. There have been some surprises, and our understanding of the evolution of the solar wind has been improved. Systematic studies have shown that the minor ions generally travel with a common bulk speed and have temperatures roughly proportional to their masses. It has been determined that the /sup 3/He/sup + +/ content varies greatly; /sup 3/He/sup + +///sup 4/He/sup + +/ ranges from as high as 10/sup 2/ values to below 2 x 10/sup -4/. In some solar wind flows which can be related to energetic coronal events, the minor ions are found in unusual ionization states containing Fe/sup 16 +/ as a prominent ion, showing that the states were formed at unusually high temperatures. Unexpectedly, in a few flows substantial quantities of /sup 4/He/sup +/ have been detected, sometimes with ions identifiable as O/sup 2 +/ and O/sup 3 +/. Surprisingly, in some of these examples the ionization state is mixed showing that part of the plasma escaped the corona without attaining the usual million-degree temperatures while other parts were heated more nearly in the normal manner. Additionally, detailed studies of the minor ions have increased our understanding of the coronal expansion. For example, such studies have contributed to identifying near equatorial coronal streamers as the source of solar wind flows between high speed streams.

Bame, S.J.

1982-01-01T23:59:59.000Z

489

Evidence of Titan's Climate History from Evaporite Distribution  

E-Print Network [OSTI]

Water-ice-poor, 5-$\\mu$m-bright material on Saturn's moon Titan has previously been geomorphologically identified as evaporitic. Here we present a global distribution of the occurrences of the 5-$\\mu$m-bright spectral unit, identified with Cassini's Visual Infrared Mapping Spectrometer (VIMS) and examined with RADAR when possible. We explore the possibility that each of these occurrences are evaporite deposits. The 5-$\\mu$m-bright material covers 1\\% of Titan's surface and is not limited to the poles (the only regions with extensive, long-lived surface liquid). We find the greatest areal concentration to be in the equatorial basins Tui Regio and Hotei Regio. Our interpretations, based on the correlation between 5-$\\mu$m-bright material and lakebeds, imply that there was enough liquid present at some time to create the observed 5-$\\mu$m-bright material. We address the climate implications surrounding a lack of evaporitic material at the south polar basins: if the south pole basins were filled at some point in ...

MacKenzie, Shannon M; Sotin, Christophe; Soderblom, Jason M; Mouélic, Stéphane Le; Rodriguez, Sebastien; Baines, Kevin H; Buratti, Bonnie J; Clark, Roger N; Nicholson, Phillip D; McCord, Thomas B

2014-01-01T23:59:59.000Z

490

Water in the Martian regolith from OMEGA/Mars Express  

E-Print Network [OSTI]

Here we discuss one of the current reservoirs of water on Mars, the regolith and rocks exposed at the surface. This reservoir is characterized by the presence of H_{2}O- and OH- bearing phases that produce a broad absorption at a wavelength of \\sim 3 \\mu m in near-infrared (NIR) reflectance spectra. This absorption is present in every ice-free spectrum of the Martian surface obtained thus far by orbital NIR spectrometers. We present a quantitative analysis of the global distribution of the 3 \\mu m absorption using the Observatoire pour la Min\\'eralogie, l\\'\\Eau, les Glaces et l\\'\\Activit\\'e (OMEGA) imaging spectrometer that has been mapping the surface of Mars at kilometer scale for more than ten years. Based on laboratory reflectance spectra of a wide range of hydrous minerals and phases, we estimate a model-dependent water content of 4\\pm 1 wt. \\% in the equatorial and mid-latitudes. Surface hydration increases with latitude, with an asymmetry in water content between the northern and southern hemispheres. ...

Audouard, Joachim; Vincendon, Mathieu; Milliken, Ralph E; Jouglet, Denis; Bibring, Jean-Pierre; Gondet, Brigitte; Langevin, Yves

2014-01-01T23:59:59.000Z

491

A design approach for improving the performance of single-grid planar retarding potential analyzers  

SciTech Connect (OSTI)

Planar retarding potential analyzers (RPAs) have a long flight history and have been included on numerous spaceflight missions including Dynamics Explorer, the Defense Meteorological Satellite Program, and the Communications/Navigation Outage Forecast System. RPAs allow for simultaneous measurement of plasma composition, density, temperature, and the component of the velocity vector normal to the aperture plane. Internal conductive grids are used to approximate ideal potential planes within the instrument, but these grids introduce perturbations to the potential map inside the RPA and cause errors in the measurement of the parameters listed above. A numerical technique is presented herein for minimizing these grid errors for a specific mission by varying the depth and spacing of the grid wires. The example mission selected concentrates on plasma dynamics near the sunset terminator in the equatorial region. The international reference ionosphere model is used to discern the average conditions expected for this mission, and a numerical model of the grid-particle interaction is used to choose a grid design that will best fulfill the mission goals.

Davidson, R. L.; Earle, G. D. [William B. Hanson Center for Space Sciences, University of Texas at Dallas, 800 W. Campbell Rd. WT15, Richardson, Texas 75080 (United States)

2011-01-15T23:59:59.000Z

492

Computational Studies of Physical Properties of Boron Carbide  

SciTech Connect (OSTI)

The overall goal is to provide valuable insight in to the mechanisms and processes that could lead to better engineering the widely used boron carbide which could play an important role in current plight towards greener energy. Carbon distribution in boron carbide, which has been difficult to retrieve from experimental methods, is critical to our understanding of its structure-properties relation. For modeling disorders in boron carbide, we implemented a first principles method based on supercell approach within our G(P,T) package. The supercell approach was applied to boron carbide to determine its carbon distribution. Our results reveal that carbon prefers to occupy the end sites of the 3-atom chain in boron carbide and further carbon atoms will distribute mainly on the equatorial sites with a small percentage on the 3-atom chains and the apex sites. Supercell approach was also applied to study mechanical properties of boron carbide under uniaxial load. We found that uniaxial load can lead to amorphization. Other physical properties of boron carbide were calculated using the G(P,T) package.

Lizhi Ouyang

2011-09-30T23:59:59.000Z

493

X-ray haloes and starformation in early-type galaxies  

E-Print Network [OSTI]

High resolution 2D hydrodynamical simulations describing the evolution of the hot ISM in state-of-the-art axisymmetric two-component models of early-type galaxies well reproduced the observed trends of the X-ray luminosity ($L_\\mathrm{x}$) and temperature ($T_\\mathrm{x}$) with galaxy shape and rotation, however they also revealed the formation of an exceedingly massive cooled gas disc in rotating systems. In a follow-up of this study, here we investigate the effects of starformation in the disc, including the consequent injection of mass, momentum and energy in the pre-existing interstellar medium. It is found that subsequent generations of stars originate one after the other in the equatorial region; the mean age of the new stars is $> 5$ Gyr, and the adopted recipe for starformation can reproduce the empirical Kennicutt-Schmidt law. The results of the previous investigation without starformation, concerning $L_\\mathrm{x}$ and $T_\\mathrm{x}$ of the hot gas, and their trends with galactic shape and rotation, ...

Negri, Andrea; Ciotti, Luca

2015-01-01T23:59:59.000Z

494

Final Report for DOE contract DE-FG02-98ER62609  

SciTech Connect (OSTI)

Several publications document, analyze, and map the paleoclimatic data available for the last glacial maximum (LGM) 21,000 years ago. Data coverage is fairly extensive for North America, Eurasia, and Africa. The data show much lower temperatures for that time in earth history. These data were used to check climate model simulations for the LGM. Simulations forced by the CLIMAP SST for the LGM, where the west/east SST gradient across the Pacific is reduced compared to present, produce a reduction in the strength of the trade winds and a decrease in the west/east slope of the equatorial thermocline that is incompatible with thermocline depths newly inferred from foraminiferal assemblages. Stronger than-present trade winds, and a more realistic simulation of the thermocline slope, are produced when eastern Pacific SSTs are 2oC cooler than western Pacific SSTs. Sensitivity experiments for the model simulations of the LGM were also used to show which aspects of the climate boundary conditions produced various changes in model simulations for the LGM. An experiment which has the LGM ice sheets for the Northern Hemisphere but no Eurasian ice sheet shows that the downstream cooling in Asia is largely dependent on sea-ice growth in the North Atlantic, which is a product of the Laurentide ice sheet. Weaker Asian monsoons develop as a result of this downstream cooling, which is largest for low Laurentide ice sheets of large areal extent.

Webb, Thompson, III

2012-08-20T23:59:59.000Z

495

Near-Infrared, Kilosecond Variability of the Wisps And Jet in the Crab Pulsar Wind Nebula  

SciTech Connect (OSTI)

We present a time-lapse sequence of 20 near-infrared (J- and K'-band) snapshots of the central 20'' x 20'' of the Crab pulsar wind nebula, taken at sub-arcsecond resolution with the Hokupa'a/QUIRC adaptive optics camera on the Gemini North Telescope, and sampled at intervals of 10 minutes and 24 hours. It is observed that the equatorial wisps and polar knots in the termination shock of the pulsar wind appear to fluctuate in brightness on kilosecond time-scales. Maximum flux variations of {+-}24 {+-} 4 and {+-}14 {+-} 4 per cent relative to the mean (in 1.2 ks) are measured for the wisps and knots respectively, with greatest statistical significance in J band where the nebula background is less prominent. The J and K' flux densities imply different near-infrared spectra for the nonthermal continuum emission from the wisps and outermost polar knot (''sprite''), giving F{sub {nu}} {proportional_to} {nu}{sup -0.56{+-}0.12} and F{sub {nu}} {proportional_to} {nu}{sup -0.21{+-}0.13} respectively. The data are compared with existing optical and UV photometry and applied to constrain theories of the variability of the wisps (relativistic ion-cyclotron instability) and knots (relativistic fire hose instability).

Melatos, Andrew; Scheltus, D.; /Melbourne U.; Whiting, M.T.; /New South Wales U.; Eikenberry, S.S.; /Florida U.; Romani, R.W.; /Stanford U., Phys. Dept.; Rigaut, F.; /Gemini; Spitkovsky, A.; /KIPAC, Menlo Park; Arons, J.; /UC, Berkeley, Astron. Dept.; Payne, D.J.B.; /Melbourne U.

2006-01-11T23:59:59.000Z

496

Status of the Design of the ITER ECE Diagnostic  

SciTech Connect (OSTI)

The baseline design for the ITER electron cyclotron emission (ECE) diagnostic has entered the detailed preliminary design phase. Two plasma views are planned, a radial view and an oblique view that is sensitive to distortions in the electron momentum distribution near the average thermal momentum. Both views provide high spatial resolution electron temperature profiles when the momentum distribution remains Maxwellian. The ECE diagnostic system consists of the front-end optics, including two 1000 K calibration sources, in equatorial port plug EP9, the 70-1000 GHz transmission system from the front-end to the diagnostics hall, and the ECE instrumentation in the diagnostics hall. The baseline ECE instrumentation will include two Michelson interferometers that can simultaneously measure ordinary and extraordinary mode ECE from 70 to 1000 GHz, and two heterodyne radiometer systems, covering 122-230 GHz and 244-355 GHz. Significant design challenges include 1) developing highly-reliable 1000 K calibration sources and the associated shutters/mirrors, 2) providing compliant couplings between the front-end optics and the polarization splitter box that accommodate displacements of the vacuum vessel during plasma operations and bake out, 3) protecting components from damage due to stray ECH radiation and other intense millimeter wave emission and 4) providing the low-loss broadband transmission system.

Taylor, Gary [PPPL

2014-04-01T23:59:59.000Z

497

An Infrared Imaging Study of the Bipolar Proto-Planetary Nebula IRAS 16594-4656  

E-Print Network [OSTI]

High-resolution mid-infrared images have been obtained in N-band and Q-band for the proto-planetary nebula IRAS 16594-4656. A bright equatorial torus and a pair of bipolar lobes can clearly be seen in the infrared images. The torus appears thinner at the center than at the edges, suggesting that it is viewed nearly edge-on. The infrared lobes correspond to the brightest lobes of the reflection nebula seen in the Hubble Space Telescope (HST) optical image, but with no sign of the point-symmetric structure seen in the visible image. The lobe structure shows a close correspondence with a molecular hydrogen map obtained with HST, suggesting that the dust emission in the lobes traces the distribution of the shocked gas. The shape of the bipolar lobes shows clearly that the fast outflow is still confined by the remnant circumstellar envelope of the progenitor asymptotic giant branch (AGB) star. However, the non-detection of the dust outside of the lobes suggests that the temperature of the dust in the AGB envelope is too low for it to be detected at 20 microns.

Kevin Volk; Bruce J. Hrivnak; Kate Y. L. Su; Sun Kwok

2006-07-20T23:59:59.000Z

498

Final Activity Report: The Effects of Iron Complexing Ligands on the Long Term Ecosystem Response to Iron Enrichment of HNLC waters  

SciTech Connect (OSTI)

Substantial increases in the concentrations of the stronger of two Fe(III) complexing organic ligand classes measured during the mesoscale Fe enrichment studies IronEx II and SOIREE appeared to sharply curtailed Fe availability to diatoms and thus limited the efficiency of carbon sequestration to the deep. Detailed observations during IronEx II (equatorial Pacific Ocean) and SOIREE (Southern Ocean –Pacific sector) indicate that the diatoms began re-experiencing Fe stress even though dissolved Fe concentrations remained elevated in the patch. This surprising outcome likely is related to the observed increased concentrations of strong Fe(III)-complexing ligands in seawater. Preliminary findings from other studies indicate that diatoms may not readily obtain Fe from these chemical species whereas Fe bound by strong ligands appears to support growth of cyanobacteria and nanoflagellates. The difficulty in assessing the likelihood of these changes with in-situ mesoscale experiments is the extended monitoring period needed to capture the long-term trajectory of the carbon cycle. A more detailed understanding of Fe complexing ligand effects on long-term ecosystem structure and carbon cycling is essential to ascertain not only the effect of Fe enrichment on short-term carbon sequestration in the oceans, but also the potential effect of Fe enrichment in modifying ecosystem structure and trajectory.

Trick, Charles Gordon [Western University

2013-07-30T23:59:59.000Z

499

Red or blue? A potential kilonova imprint of the delay until black hole formation following a neutron star merger  

E-Print Network [OSTI]

Mergers of binary neutron stars (NSs) usually result in the formation of a hypermassive neutron star (HMNS). Whether- and when this remnant collapses to a black hole (BH) depends primarily on the equation of state and on angular momentum transport processes, both of which are uncertain. Here we show that the lifetime of the merger remnant may be directly imprinted in the radioactively powered kilonova emission following the merger. We employ axisymmetric, time-dependent hydrodynamic simulations of remnant accretion disks orbiting a HMNS of variable lifetime, and characterize the effect of this delay to BH formation on the disk wind ejecta. When BH formation is relatively prompt (~ 100 ms), outflows from the disk are sufficiently neutron rich to form heavy r-process elements, resulting in ~ week-long emission with a spectral peak in the near-infrared (NIR), similar to that produced by the dynamical ejecta. In contrast, delayed BH formation allows neutrinos from the HMNS to raise the electron fraction in the polar direction to values such that potentially Lanthanide-free outflows are generated. The lower opacity would produce a brighter, bluer, and shorter-lived ~ day-long emission (a `blue bump') prior to the late NIR peak from the dynamical ejecta and equatorial wind. This new diagnostic of BH formation should be useful for events with a signal to noise lower than that required for direct detection of gravitational waveform signatures.

Brian D. Metzger; Rodrigo Fernández

2014-05-02T23:59:59.000Z

500

Plutonium and americium behavior in coral atoll environments  

SciTech Connect (OSTI)

Inventories of /sup 239 +240/Pu and /sup 241/Am greatly in excess of global fallout levels persist in the benthic environments of Bikini and Enewetak Atolls. Quantities of /sup 239 +240/Pu and lesser amounts of /sup 241/Am are continuously mobilizing from these sedimentary reservoirs. The amount of /sup 239 +240/Pu mobilized to solution at any time represents 0.08 to 0.09% of the sediment inventories to a depth of 16 cm. The mobilized /sup 239 +240/Pu has solute-like characteristics and different valence states coexist in solution - the largest fraction of the soluble plutonium is in an oxidized form (+V,VI). The adsorption of plutonium to sediments is not completely reversible because of changes that occur in the relative amounts of the mixed oxidation states in solution with time. Further, any characteristics of /sup 239 +240/Pu described at one location may not necessarily be relevant in describing its behavior elsewhere following mobilization and migration. The relative amounts of /sup 241/Am to /sup 239 +240/Pu in the sedimentary deposits at Enewetak and Bikini may be altered in future years because of mobilization and radiological decay. Mobilization of /sup 239 +240/Pu is not a process unique to these atolls, and quantities in solution derived from sedimentary deposits can be found at other global sites. These studies in the equatorial Pacific have significance in assessing the long-term behavior of the transuranics in any marine environment. 22 references, 1 figure, 13 tables.

Noshkin, V.E.; Wong, K.M.; Jokela, T.A.; Brunk, J.L.; Eagle, R.J.

1984-02-01T23:59:59.000Z