Sample records for tern chlidonias niger

  1. arctic terns sterna: Topics by E-print Network

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

    together. Amie L. Black; Antony W. Diamond 2 Duffy et al.: Arctic Tern migration over Patagonia 155 Marine Ornithology 41: 155159 (2013) Environmental Sciences and Ecology Websites...

  2. AlbaTERN | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEEAisin Seikiand Telephone CoStatutes: TitleAlbaTERN Jump to:

  3. The Biology and Conservation of the Damara Tern in Namibia

    E-Print Network [OSTI]

    de Villiers, Marienne

    Chapter 7 The impacts of diamond mining activities on breeding Damara Terns Sterna balaenarum in southern and faces several conservation issues. The aim of this study was to provide a description of the ecology

  4. Sandwich Terns on Isla Rasa, Gulf of California, Mexico

    E-Print Network [OSTI]

    ... Sandwich Terns on Isla Rasa, Gulf of California, Mexico ENRIQUETA VELARDE, Instituto de Ciencias Marinas y Pesquerías, ... winters along the coasts of the Atlantic Ocean and Gulf of Mexico from Florida to the West Indies, more rarely as far south as southern ...

  5. Duffy et al.: Arctic Tern migration over Patagonia 155 Marine Ornithology 41: 155159 (2013)

    E-Print Network [OSTI]

    Duffy, David Cameron

    Duffy et al.: Arctic Tern migration over Patagonia 155 Marine Ornithology 41: 155­159 (2013 productive offshore waters of Argentinian Patagonia. We then explore possible reasons for this behavior-ANDEAN PASSAGE OF MIGRATING ARCTIC TERNS OVER PATAGONIA DAVID CAMERON DUFFY1 , ALY MCKNIGHT2 & DAVID B. IRONS2 1

  6. Nesting Success of California Least Terns at the Guerrero Negro Saltworks, Baja California Sur, Mexico, 2005

    E-Print Network [OSTI]

    ... TERNS AT THE GUERRERO NEGRO SALTWORKS, BAJA CALIFORNIA SUR, MEXICO, 2005 ANTONIO GUTIÉRREZ-AGUILAR, Exportadora de Sal, S. A. de C. ... Kramer, G. W., and Migoya, R. 1989. The Pacific coast of Mexico, in Habitat management for migrating and wintering waterfowl in North ...

  7. Niger Delta play types, Nigeria

    SciTech Connect (OSTI)

    Akinpelu, A.O. [Chevron Nigeria Limited, Lagos (Nigeria)

    1995-08-01T23:59:59.000Z

    Exploration databases can be more valuable when sorted by play type. Play specific databases provide a system to organize E & P data used in evaluating the range of values of parameters for reserve estimation and risk assessment. It is important both in focusing the knowledge base and in orienting research effort. A play in this context is any unique combination of trap, reservoir and source properties with the right dynamics of migration and preservation that results in hydrocarbon accumulation. This definitions helps us to discriminate the subtle differences found with these accumulation settings. About 20 play types were identified around the Niger Delta oil province in Nigeria. These are grouped into three parts: (1) The proven plays-constituting the bulk of exploration prospects in Nigeria today. (2) The unproven or semi-proven plays usually with some successes recorded in a few tries but where knowledge is still inadequate. (3) The unproven or analogous play concept. These are untested but geologically sound ideas which may or may not have been tried elsewhere. With classification and sub grouping of these play types into specific databases, intrinsic attributes and uniqueness of each of them with respect to the four major risk elements and the eight parameters for reserve estimation can be better understood.

  8. aspergillus niger pectin: Topics by E-print Network

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

    la trajectoire politiquemalienne, les interventions militaires au Niger (1996, 1999, 2010) ont en revanche marqu leshsitations (more) Chauzal, Grgory 2011-01-01 39...

  9. Use of a Nesting Platform by Gul-Billed Terns and Black Skimmers at the Salton Sea, California

    E-Print Network [OSTI]

    ... the optimum and (2) its unprotected location with respect to wind-driven waves on the surface of the Salton Sea coupled with the region’s ... larids have specifically addressed the causes of mortality of young terns on these artificial sites. In a comparison of the ...

  10. Niger-IAEA Cooperation | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpen EnergyNelsoniX LtdNew EnergyCity DataNextEra2005Niger

  11. Sequence stratigraphy of Niger Delta, Delta field, offshore Nigeria 

    E-Print Network [OSTI]

    Owoyemi, Ajibola Olaoluwa

    2005-11-01T23:59:59.000Z

    The Niger Delta clastic wedge formed along the West Africa passive margin. This wedge has been divided into three formations that reflect long-term progradation: 1) pro-delta shales of the Akata Formation (Paleocene to Recent), 2) deltaic...

  12. Water, Cities, and Bodies: A Relational Understanding of Niamey, Niger.

    E-Print Network [OSTI]

    Hungerford, Hilary B.

    2012-05-31T23:59:59.000Z

    This is a dissertation about how Niamey, Niger is experienced in neighborhoods, through bodies, and around water. I examine the particular colonial and post-colonial historical processes that impacted development and distribution of Niamey's water...

  13. Sequence stratigraphy of Niger Delta, Delta field, offshore Nigeria

    E-Print Network [OSTI]

    Owoyemi, Ajibola Olaoluwa

    2005-11-01T23:59:59.000Z

    The Niger Delta clastic wedge formed along the West Africa passive margin. This wedge has been divided into three formations that reflect long-term progradation: 1) pro-delta shales of the Akata Formation (Paleocene to Recent), 2) deltaic...

  14. Lasius niger ants discriminate aphids based on their cuticular hydrocarbons Corsin Langa,1

    E-Print Network [OSTI]

    Richner, Heinz

    Lasius niger ants discriminate aphids based on their cuticular hydrocarbons Corsin Langa,1 chemical communication cuticular hydrocarbon interspecific communication Lasius niger mutualism species covered with aphid cuticular hydrocarbons. Neutral control objects were antennated, but the ants quickly

  15. Surficial sediments of the continental rise and slope, Niger Delta, West Africa: properties and geology

    E-Print Network [OSTI]

    Kobilka, David William

    1999-01-01T23:59:59.000Z

    The submarine portions of the Niger Delta, West Africa are undergoing active gravity tectonic deformation due to thick deposits of ductile shale overlain by paralic sands. Because the region is rich in hydrocarbon reserves, the subdermal Niger Delta...

  16. Niger delta deepwater region petroleum potential assessment

    SciTech Connect (OSTI)

    Thomas, D. [Thomas and Associates, Hastings (United Kingdom)

    1995-12-18T23:59:59.000Z

    On behalf of the Nigerian Ministry of Petroleum and Natural Resources some 23,000 km of high quality 192 channel, 96 fold seismic, and associated gravity and magnetic data were acquired by TGSI-Mabon Geophysical Co. and made available to the industry in 1991. These data were collected over all deepwater blocks in conjunction with the planned 1993 license round. Later, during 1993 and 1994 TGSI with Mabon Ltd. and Stratum Petroleum Services extended the program onto the shelf (7,000 km) and into the ultra deepwater areas (6,400 km), making possible modern studies of the entire offshore delta complex. In assessing the petroleum potential of an undrilled region, it is useful to refer to analogous basins or provinces already with histories of hydrocarbon exploration and discovery. With this in mind, and using limited data from the already drilled areas of Nigeria offshore, the adjacent West Africa salt basin and Brazil in particular, an attempt is made to discuss the hydrocarbon habitat of the undrilled Niger delta deepwater offshore sedimentary sequences.

  17. Production of extremophilic bacterial cellulase enzymes in aspergillus niger.

    SciTech Connect (OSTI)

    Gladden, John Michael

    2013-09-01T23:59:59.000Z

    Enzymes can be used to catalyze a myriad of chemical reactions and are a cornerstone in the biotechnology industry. Enzymes have a wide range of uses, ranging from medicine with the production of pharmaceuticals to energy were they are applied to biofuel production. However, it is difficult to produce large quantities of enzymes, especially if they are non-native to the production host. Fortunately, filamentous fungi, such as Aspergillus niger, are broadly used in industry and show great potential for use a heterologous enzyme production hosts. Here, we present work outlining an effort to engineer A. niger to produce thermophilic bacterial cellulases relevant to lignocellulosic biofuel production.

  18. Pollution of the River Niger and its main tributaries

    SciTech Connect (OSTI)

    Nwokedi, G.I.C.; Obodo, G.A. (Univ. of Nigeria, Nsukka (Nigeria))

    1993-08-01T23:59:59.000Z

    The River Niger system, with a length of about 4200 kilometers, and a discharge volume of 190 cubic kilometers, per year is the third largest river in Africa, and the largest in West Africa. It serves as an important waterway for the transportation of goods and provides rich agricultural flood basins for the cultivation of food and vegetables. Also it is a major source of animal proteins in form of fishes, snails and other aquatics. Above all the River and its tributaries represent the main source of domestic water supply for the rural communities, and water for irrigation. Therefore there is a need to establish the nature and present levels of pollutants in the river, and the contribution made by the tributaries to the gross pollution level. A number of studies have been reported. Martins reported on the geochemistry of the River Niger while Nriagu; Livingstone; and Imevbore provided some chemical data on the upper reaches around and above its confluence with River Benue at Lokoja. Ajayi and Osibanjo reported on the chemical properties of some tributaries above the confluence of the Niger and the Benue. So far no work has been reported on the lower reaches of the Niger where contributions of the Benue and other major tributaries are significant, and where there are large settlements on its banks and the banks of the tributaries. This work aims at establishing base-line levels of the various pollutants and their sources. 12 refs., 1 fig., 2 tabs.

  19. Artifacts as Social Conflict Resolution Mechanism in Traditional Urhobo Society of Nigeria's Niger Delta

    E-Print Network [OSTI]

    Diakparomre, Abel Mac

    2009-01-01T23:59:59.000Z

    State University in Abraka, Nigeria. He has a Master of FineNiger Delta region of Nigeria. Bibliography Aweto, Albertand Socialization Processes in Nigeria. ” Ethiope Research:

  20. CLIMATOLOGY OF VERTICAL AIR MOTION DURING RAINFALL IN NIAMEY, NIGER AND BLACK FOREST, GERMANY USING AN

    E-Print Network [OSTI]

    CLIMATOLOGY OF VERTICAL AIR MOTION DURING RAINFALL IN NIAMEY, NIGER AND BLACK FOREST, GERMANY USING in Niamey, Niger and eight months in Germany's Black Forest. The AMF includes a vertically pointing 95 GHz of the orographically influenced precipitation in Germany's mountains. __________ NOTICE: This manuscript has been

  1. Niger Delta basin oil and gas prospects evaluated

    SciTech Connect (OSTI)

    Not Available

    1992-09-28T23:59:59.000Z

    This paper reports that an ambitious project to map African oil and gas prospects has produced its first findings in a report on the Niger Delta basin. In Nigeria, 73% of discoveries are smaller than 50 million bbl, with a 42% success rate for wildcats. There are 'out of round prospects off Nigeria, too, with a number of companies currently in discussions. Petroconsultants the there are further opportunities for exploration in the Northern Onshore Fringe Belt, which has an estimated potential of 500 million bbl of reserves. Three OPLs are open.

  2. Women, Water, and Everyday Life in Niamey, Niger

    E-Print Network [OSTI]

    Hungerford, Hilary B.

    2011-11-16T23:59:59.000Z

    neighborhood; navigated to points using GPS unit Uneven access to water in Niamey % of people with a water tap inside their residence 0-15% 60-75% 15-45% 75-90% 45-60% over 90% N Peripheral location ? lack of piped...Women, Water, and Everyday Life in Niamey, Niger Hilary B. Hungerford, PhD Candidate, Geography Access to water in Niamey As cities in the developing world continue to grow, providing residents with clean, reliable access to water is challenging...

  3. Prey capture in the chain pickerel, Esox niger: correlations between feeding and locomotor behavior

    E-Print Network [OSTI]

    Lauder, George V.

    -1078. The predatory behavior of the chain pickerel Esox niger was studiedby high-speed cinematography to correlate the topic of a number of investigations using electromyographyand cinematography(Ballintijn et al. 1972

  4. Niger, with new oil legislation, offers little drilled acreage for exploration

    SciTech Connect (OSTI)

    Bruneton, A. (Beicip, Rueil-Malmaison (FR))

    1991-09-16T23:59:59.000Z

    This paper reports on the Ministry of Mines and Energy of Niger has released acreage in East Niger to the international oil industry. Four blocks will be opened in a first step with no fixed time schedule for offers. The blocks are largely underexplored and are near significant oil indications. Niger, between Algeria and Nigeria, represents a transitional link between North Africa and Central Africa. The Republic of Niger, with the exception of its capital Niamey, is sparsely populated with 7 million people on a 1.3 million sq mile territory. Easy communications exist with neighboring Nigeria, Mali, and Chad. The arid climate allows for year round working conditions and easy access to opened areas.

  5. A geospatial analysis of market integration: the case of the 2004/5 food crisis in Niger

    E-Print Network [OSTI]

    Shin, Michael

    2010-01-01T23:59:59.000Z

    2008; Eilerts 2007; Sanchez-Montero 2007). What is apparentAm J Agric Econ Sanchez-Montero M (2007) The 2005 Niger food

  6. Comparative genomics of citric-acid producing Aspergillus niger ATCC 1015 versus enzyme-producing CBS 513.88

    E-Print Network [OSTI]

    Grigoriev, Igor V.

    2011-01-01T23:59:59.000Z

    expression  profiles.   Mol.   Genet.   Genomics  279: Comparative genomics of citric-acid producing Aspergillus2006.  Aspergillus niger genomics: past, present and into 

  7. Relationships among oils and water compositions in Niger delta

    SciTech Connect (OSTI)

    Dickey, P.A.; George, G.O.; Barker, C.

    1987-10-01T23:59:59.000Z

    In some fields of the Tertiary Niger delta of Nigeria, heavy, asphaltic oil is found in shallow reservoirs and light, waxy oil is found in deeper reservoirs in the same field. Both oils appears to have had the same source. The change with depth from heavy to light oil is usually abrupt and occurs at a reservoir temperature between 150/sup 0/ and 180/sup 0/F (66/sup 0/ and 82/sup 0/C). In other areas similar degradation of oil has been ascribed to bacteria brought into the oil reservoir by invading meteoric water. In Nigeria, meteoric water is low in dissolved solids and high in bicarbonate, whereas connate water is saltier and contains more chloride. Samples of both types of oil and associated water from six fields were analyzed and compared with previously acquired analyses from these fields. No clear relationship between meteoric water and degraded oil was found. Degraded oil may occur with either meteoric or connate water, and undegraded oil is sometimes found with meteoric water. This suggests extensive secondary migration of oil from one structure to another as well as deep penetration of meteoric water. 14 figures, 1 table.

  8. Reuse of Drill Cutting Ash as a Stabilizing Agent for Niger Delta Soils

    E-Print Network [OSTI]

    Alayaki, F. M.; Al-Tabbaa, A.; Ayotamuno, M. J.

    2015-01-01T23:59:59.000Z

    in Onne Oil and Gas Free Zone, Rivers State, Nigeria. B. Niger Delta Soils The peculiar geology of Niger Delta and the derived soils have striking peculiarity that is different from other common laterite soils. Previous studies revealed that the in... to that in use at the North Sea. The binders were Portland cement, hydrated lime, pulverized fuel ash, blast furnace slag, MgO cements, zeolites, silica fume, and cement kiln dust. The study showed that the binders could effectively immobilized the toxic...

  9. HSE (CASHES) management in Niger Delta seismic operations

    SciTech Connect (OSTI)

    Adepoju, O.J.

    1996-12-31T23:59:59.000Z

    3-D seismic acquisition surveys in the Niger Delta of Nigeria, are carried out under extremely arduous field conditions due to difficult terrain, dense vegetation, semi-manual mode of operation, wildlife and volatile communities. The vegetation is a combination of evergreen tropical rain forest in the land areas and mangrove in the swamp areas. Some parts of the delta are prone to high seasonal flooding. Seismic lines are laid out by manual cutting of brush using machetes and shot holes drilled semi-manually with pumps. In order to effectively carry out the operations with due regard to the people and environment, a Community Affairs, Safety, Health, Environment and Security (CASHES) Polio and management System which ensures that a hazards are identified, assessed. controlled, with an effective loop feedback mechanism was introduced and implemented. CASHES critical activities are community relations, field security, explosives handling, water transport/journey management, river crossings. weather, shallow gas blow-out, waste management, seasonal flooding and floating-seaweed (water hyacinth)/timber logs. Environmental Impact Assessment (EIA) studies arc essential at the initial planning stages. About 41 Hazard Registers and 177 Activity Specification Sheets are developed in a typical survey. About 85% of the labor workforce are recruited from the host communities to promote cordial relations. Extensive training is carried out to raise the standards of the new recruits. The implementation of the management system is cascaded down using simplified documentation (procedures, work tasks, checklists etc.) adapted to local conditions. Integrated CASHES audits (Premob, Minor, Major. Follow up) arc conducted to check the efficiency of the system with documents getting reviewed regularly to keep the system alive and capable of handling changes. With these in place, high potential incidents are reduced/eliminated.

  10. On farm yield and water use response of pearl millet to different management practices in Niger 

    E-Print Network [OSTI]

    Manyame, Comfort

    2009-05-15T23:59:59.000Z

    for taking the lead during a most critical stage of my education. I would also like to thank my friends, Pierre Akponipke, Nritijuna Naidu and Saadatou Kane Oumarou for making my stay in Niger very memorable, and my College Heights Assembly of God family...

  11. Application of sequence stratigraphy to Neritic sediments of the Niger delta

    SciTech Connect (OSTI)

    McHargue, T.; Diedjomahor, J.; Arowolo, I.; Hobbet, R.; Onyia, V. (Chevron Nigeria Limited, Lagos (Nigeria))

    1993-09-01T23:59:59.000Z

    Sequence stratigraphy is an approach to correlation that emphasizes regional unconformities as the basis for subdividing sediments into time-equivalent packages called sequences. In Chevron's acreage in the northwestern Niger delta, three-dimensional (3-D) seismic data have been used to map each sequence-bounding unconformity based on the presence of a submarine canyon near the paleoshelf edge. Erosion lateral to each canyon is slight or even absent. Useful criteria for recognizing sequence boundaries in 3-D seismic data in neritic sediments of the niger delta are (1) truncation of underlying reflections, (2) drape, dip discordance, or onlap of younger reflections over topography on the sequence boundary, (3) contrast in seismic attributes across the sequence boundary, and (4) termination of faults at the sequence boundary. Published criteria for recognizing sequence boundaries from logs and paleontological data are being adaped to the Niger delta, where high-frequency fourth-order sequences are strongly developed. Identifying and mapping sequence boundaries is beneficial because sequence boundaries (1) may form truncation traps where shales of the younger sequence overlie truncated sands of the older sequence, (2) assist correlations across faults, (3) subdivide the section into units of genetically related sediments, and (4) provide an objective basis for regional correlations.

  12. Community participation and environmental decision-making in the Niger Delta

    SciTech Connect (OSTI)

    Adomokai, Rosemary; Sheate, William R

    2004-07-01T23:59:59.000Z

    The participation of communities in the process of environmental decision-making in Nigeria and the Niger Delta region in particular is a relatively new process. There are many practical problems ranging from financial support, methods used and the willingness of identified stakeholders to participate. This paper seeks to highlight recent developments in community participation and environmental decision-making in the Niger Delta, using the EIA Decree of 1992 as a reference point. The EIA Decree of 1992 is the only legislation that refers to participation of the communities when environmental decisions are being made. The study reported here aimed to examine differences and similarities between the identified stakeholders interviewed in the research, in order to highlight areas of improvement that will encourage positive changes to the process and foster better relations between the stakeholders. The paper provides a brief background to community participation in the Niger Delta region and reports on the research approach adopted. Interviews with stakeholders in the EIA process were undertaken to provide a better understanding of public participation in practice under the EIA Decree. While participation was found to be now firmly on the agenda, there is still much to do to engender greater awareness of EIA and the potential benefits participation can hold.

  13. The effectiveness of 3-D marine systems as an exploration tool in the offshore Niger Delta

    SciTech Connect (OSTI)

    Idowu, A.O. (Nigerian National Petroleum Corp., Lagos (Nigeria))

    1993-09-01T23:59:59.000Z

    From inception in 1984, three-dimensional (3-D) marine surveys have been used widely for field development where commercial hydrocarbons were known to exist in Nigeria. The high-trace density and full 3-D migration provide a data set that allows detailed interpretation of complex geologic structures and, in many cases, provides good stratigraphic information as well. The result has been better placement of development wells, making field development more efficient and cost effective. Previous application of the 3-d method (i.e., reconaissance 3-D) as an exploration tool in 1987 has demonstrated its effectiveness for predrilling detailing of prospects in offshore Niger Delta in a situation where a large volume of seismic data were acquired at relatively reduced unit costs. The technique involves acquiring data along a line every 200 m spacing, while interpretation in 3-D data processing is applied for subsequent 3-D migration. Based on pattern recognition of events on the input traces, the links are established to allow traces to be formed between input locations by comparing several attributes of events on neighboring traces. A case history example from the offshore Niger delta shows that the collection costs for the reconnaissance 3-D method are comparable to two-dimensional detailing based on similar line kilometer and time duration for the survey. A trade-off between cost and technical specifications can be programmed by focusing on the geologic objective. The technique brings the advantage of 3-D methods, but not their costs, to the exploration phase of the search for petroleum, and it is highly recommended for exploration in frontier areas, particularly the deep offshore of the Niger Delta.

  14. Trace metal content of fish and shellfishes of the Niger delta area of Nigeria

    SciTech Connect (OSTI)

    Kakulu, S.E.; Osibanjo, O.; Ajayi, S.O.

    1987-01-01T23:59:59.000Z

    The trace metal contents of various fish and shellfishes from the Niger delta area of Nigeria were determined. The levels in the shellfishes were higher than those in the fish, which could be due to their being bottom feeders. The levels of fish varied from <0.01-0.10 ..mu..g/g for Cd, < 0.05-3.69 ..mu..g/g for Cu, 0.49-16.52 ..mu..g/g for Fe, and 0.08-6.90 ..mu..g/g for Zn. 15 references, 1 figures, 2 tables.

  15. Niger-Pilot Program for Climate Resilience (PPCR) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpen EnergyNelsoniX LtdNew EnergyCity DataNextEra2005Niger

  16. Agro-business et dveloppement agricole : quels enjeux pour quelles perspectives ? Le cas de la zone Office du Niger (Mali).

    E-Print Network [OSTI]

    Boyer, Edmond

    agricole, agriculture familiale, agro-business, gestion de l'eau, accès au foncier Key words: irrigation perspectives? Le cas de la zone Office du Niger. Mali., Côte D'Ivoire (2009)" #12;Résumé. L'évolution du marchéAgro-business et développement agricole : quels enjeux pour quelles perspectives ? Le cas de la

  17. Dynamic leakage of faults during differential depletion: Theory, models, and examples from the Niger delta

    SciTech Connect (OSTI)

    Watts, N.L.; Kaars Sijpestein, C.H.; Osai, L.N.; Okoli, O.C. (Shell Petroleum Development Co. of Nigeria, Lagos (Nigeria))

    1991-08-01T23:59:59.000Z

    Previous studies of fault sealing have addressed possible fault leakage during secondary migration due to the effects of increased hydrocarbon-water capillary pressure, fracturing, or small-scale incremental fault movements. Of equal importance to production geologists is the failure and leakage of faults during field development due to differential depletion of adjacent fault blocks. This paper examines the unique problems associated with this dynamic leakage of faults. It is theoretically shown that the fault sealing mechanism, and the extent of the seal, directly influences the failure process which in turn results in a variety of favorable and unfavorable effects on field development. The qualitative models give considerable insight into such aspects as oil-column expansion and resaturation losses, interfault block aquifer support (with important implications to material balance calculations), possible leakage or spillage of oil across faults, and potential fault failure during (re)injection projects. Examples of dynamic fault leakage are presented from selected fields of the Niger delta.

  18. Atmospheric Radiation Measurement (ARM) Data from Niamey, Niger for the Radiative Atmospheric Divergence using AMF, GERB and AMMA Stations (RADAGAST)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The Atmospheric Radiation Measurement (ARM) Program is the largest global change research program supported by the U.S. Department of Energy. The primary goal of the ARM Program is to improve the treatment of cloud and radiation physics in global climate models in order to improve the climate simulation capabilities of these models. To achieve this goal, ARM scientists and researchers around the world use continuous data obtained through the ARM Climate Research Facility. The ARM Mobile Facility (AMF) operates at non-permanent sites selected by the ARM Program. Sometimes these sites can become permanent ARM sites, as was the case with Graciosa Island in the Azores. It is now known as the Eastern North Atlantic permanent site. In January 2006 the AMF deployed to Niamey, Niger, West Africa, at the Niger Meteorological Office at Niamey International Airport. This deployment was timed to coincide with the field phases and Special Observing Periods of the African Monsoon Multidisciplinary Analysis (AMMA). The ARM Program participated in this international effort as a field campaign called "Radiative Divergence using AMF, GERB and AMMA Stations (RADAGAST).The primary purpose of the Niger deployment was to combine an extended series of measurements from the AMF with those from the Geostationary Earth Radiation Budget (GERB) Instrument on the Meteosat operational geostationary satellite in order to provide the first well-sampled, direct estimates of the divergence of solar and thermal radiation across the atmosphere. A large collection of data plots based on data streams from specific instruments used at Niamey are available via a link from ARM's Niamey, Niger site information page. Other data can be found at the related websites mentioned above and in the ARM Archive. Users will be requested to create a password, but the plots and data files are free for viewing and downloading. The ARM Archive physically resides at the Oak Ridge National Laboratory.

  19. Comparative Analysis of Cement and Lateralite on the Engineering Properties of Niger Delta Soils for Pavement Construction

    E-Print Network [OSTI]

    Alayaki, F. M.; Al-Tabbaa, A.; Meshida, E. A.; Ayotamuno, M. J.

    2015-05-13T23:59:59.000Z

    .BJAST.2015.254 ISSN: 2231-0843 SCIENCEDOMAIN international www.sciencedomain.org Comparative Analysis of Cement and Lateralite on the Engineering Properties of Niger Delta Soils for Pavement Construction F. M. Alayaki1*, A. Al... :1 and then stabilize with cement. However high strength reduction of about 40% was noted when the stabilized mixture was soaked in water even with as much as 10% cement, thus suggested the protection of the pavement from water ingress. [5] Noted...

  20. Comparative genomics of citric-acid producing Aspergillus niger ATCC 1015 versus enzyme-producing CBS 513.88

    SciTech Connect (OSTI)

    Grigoriev, Igor V.; Baker, Scott E.; Andersen, Mikael R.; Salazar, Margarita P.; Schaap, Peter J.; Vondervoot, Peter J.I. van de; Culley, David; Thykaer, Jette; Frisvad, Jens C.; Nielsen, Kristen F.; Albang, Richard; Albermann, Kaj; Berka, Randy M.; Braus, Gerhard H.; Braus-Stromeyer, Susanna A.; Corrochano, Luis M.; Dai, Ziyu; Dijck, Piet W.M. van; Hofmann, Gerald; Lasure, Linda L.; Magnusson, Jon K.; Meijer, Susan L.; Nielsen, Jakob B.; Nielsen, Michael L.; Ooyen, Albert J.J. van; Panther, Kathyrn S.; Pel, Herman J.; Poulsen, Lars; Samson, Rob A.; Stam, Hen; Tsang, Adrian; Brink, Johannes M. van den; Atkins, Alex; Aerts, Andrea; Shapiro, Harris; Pangilinan, Jasmyn; Salamov, Asaf; Lou, Yigong; Lindquist, Erika; Lucas, Susan; Grimwood, Jane; Kubicek, Christian P.; Martinez, Diego; Peij, Noel N.M.E. van; Roubos, Johannes A.; Nielsen, Jens

    2011-04-28T23:59:59.000Z

    The filamentous fungus Aspergillus niger exhibits great diversity in its phenotype. It is found globally, both as marine and terrestrial strains, produces both organic acids and hydrolytic enzymes in high amounts, and some isolates exhibit pathogenicity. Although the genome of an industrial enzyme-producing A. niger strain (CBS 513.88) has already been sequenced, the versatility and diversity of this species compels additional exploration. We therefore undertook whole genome sequencing of the acidogenic A. niger wild type strain (ATCC 1015), and produced a genome sequence of very high quality. Only 15 gaps are present in the sequence and half the telomeric regions have been elucidated. Moreover, sequence information from ATCC 1015 was utilized to improve the genome sequence of CBS 513.88. Chromosome-level comparisons uncovered several genome rearrangements, deletions, a clear case of strain-specific horizontal gene transfer, and identification of 0.8 megabase of novel sequence. Single nucleotide polymorphisms per kilobase (SNPs/kb) between the two strains were found to be exceptionally high (average: 7.8, maximum: 160 SNPs/kb). High variation within the species was confirmed with exo-metabolite profiling and phylogenetics. Detailed lists of alleles were generated, and genotypic differences were observed to accumulate in metabolic pathways essential to acid production and protein synthesis. A transcriptome analysis revealed up-regulation of the electron transport chain, specifically the alternative oxidative pathway in ATCC 1015, while CBS 513.88 showed significant up-regulation of genes relevant to glucoamylase A production, such as tRNA-synthases and protein transporters. Our results and datasets from this integrative systems biology analysis resulted in a snapshot of fungal evolution and will support further optimization of cell factories based on filamentous fungi.[Supplemental materials (10 figures, three text documents and 16 tables) have been made available. The whole genome sequence for A. niger ATCC 1015 is available from NBCI under acc. no ACJE00000000. The up-dated sequence for A. niger CBS 513.88 is available from EMBL under acc. no AM269948-AM270415. The sequence data from the phylogeny study has been submitted to NCBI (GU296686-296739). Microarray data from this study is submitted to GEO as series GSE10983. Accession for reviewers is possible through: http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi token GSE10983] The dsmM_ANIGERa_coll511030F library and platform information is deposited at GEO under number GPL6758

  1. Response of pearl millet [Pennisetum americanum L. (Schum)] to soil moisture in one agroclimatological zone of Niger, West Africa

    E-Print Network [OSTI]

    Gandah, Mohamadou

    1988-01-01T23:59:59.000Z

    seems to have the most impact on food production fran year to year because a great percentage of the agricultural lands are under rainfed production. According to Little et al. (1987), millet hectarage has increased in Niger by 87 0 (from 1. 64... the few crops which can grow under the semi-arid enviroment of the Sahel. Many cultivars are available in the region. They range from early cultivars found at the fringe of the arid and semi-arid regions to late cultivars found in the region...

  2. Mapping N-linked Glycosylation Sites in the Secretome and Whole Cells of Aspergillus niger Using Hydrazide Chemistry and Mass Spectrometry

    SciTech Connect (OSTI)

    Wang, Lu; Aryal, Uma K.; Dai, Ziyu; Mason, Alisa C.; Monroe, Matthew E.; Tian, Zhixin; Zhou, Jianying; Su, Dian; Weitz, Karl K.; Liu, Tao; Camp, David G.; Smith, Richard D.; Baker, Scott E.; Qian, Weijun

    2012-01-01T23:59:59.000Z

    Protein glycosylation is known to play an essential role in both cellular functions and the secretory pathways; however, little information is available on the dynamics of glycosylated N-linked glycosites of fungi. Herein we present the first extensive mapping of glycosylated N-linked glycosites in industrial strain Aspergillus niger by applying an optimized solid phase enrichment of glycopeptide protocol using hydrazide modified magnetic beads. The enrichment protocol was initially optimized using mouse plasma and A. niger secretome samples, which was then applied to profile N-linked glycosites from both the secretome and whole cell lysates of A. niger. A total of 847 unique N-linked glycosites and 330 N-linked glycoproteins were confidently identified by LC-MS/MS. Based on gene ontology analysis, the identified N-linked glycoproteins in the whole cell lysate were primarily localized in the plasma membrane, endoplasmic reticulum, golgi apparatus, lysosome, and storage vacuoles. The identified N-linked glycoproteins are involved in a wide range of biological processes including gene regulation and signal transduction, protein folding and assembly, protein modification and carbohydrate metabolism. The extensive coverage of glycosylated N-linked glycosites along with identification of partial N-linked glycosylation in those enzymes involving in different biochemical pathways provide useful information for functional studies of N-linked glycosylation and their biotechnological applications in A. niger.

  3. Overview of observations from the RADAGAST experiment in Niamey, Niger. Part 2: Radiative fluxes and divergences

    SciTech Connect (OSTI)

    Slingo, A.; White, H. E.; Bharmal, N.; Robinson, G. J.

    2009-02-25T23:59:59.000Z

    Broadband shortwave and longwave radiative fluxes observed both at the surface and from space during the RADAGAST experiment in Niamey, Niger in 2006 are presented. The surface fluxes were measured by the Atmospheric Radiation Measurement (ARM) Program Mobile Facility (AMF) at Niamey airport, while the fluxes at the top of the atmosphere (TOA) are from the Geostationary Earth Radiation Budget (GERB) instrument on the Meteosat-8 satellite. The data are analyzed as daily averages, in order to minimise sampling differences between the surface and top of atmosphere instruments, while retaining the synoptic and seasonal changes that are the main focus of this study. A cloud mask is used to identify days with cloud from those with predominantly clear skies. The influence of temperature, water vapor, aerosols and clouds is investigated. Aerosols are ubiquitous throughout the year and have a significant impact on both the shortwave and longwave fluxes. The large and systematic seasonal changes in temperature and column integrated water vapor (CWV) through the dry and wet seasons are found to exert strong influences on the longwave fluxes. These influences are often in opposition to each other, because the highest temperatures occur at the end of the dry season when the CWV is lowest, while in the wet season the lowest temperatures are associated with the highest values of CWV. Apart from aerosols, the shortwave fluxes are also affected by clouds and by the seasonal changes in CWV. The fluxes are combined to provide estimates of the divergence of radiation across the atmosphere throughout 2006. The longwave divergence is remarkably constant through the year, because of a compensation between the seasonal variations in the outgoing longwave radiation (OLR) and surface net longwave radiation. A simple model of the greenhouse effect is used to interpret this result in terms of the dependence of the normalized greenhouse effect at the TOA and of the effective emissivity of the atmosphere at the surface on the CWV. It is shown that, as the CWV increases, the atmosphere loses longwave energy to the surface with about the same increasing efficiency with which it traps the OLR, thus keeping the atmospheric longwave divergence roughly constant. The shortwave divergence is mainly determined by the CWV and aerosol loadings and the effect of clouds is much smaller than on the component fluxes.

  4. Seismic sequence stratigraphy and basin modelling: An integrated approach to acreage evaluation in the Western Niger Delta

    SciTech Connect (OSTI)

    Odoemenem, F.K.; Chukwueke, C.C.; Laux, S.J. [Shell Petroleum Development Company of Nigeria Ltd., Delta State (Nigeria)] [and others

    1995-08-01T23:59:59.000Z

    The OML, 42 and 44 licences cover an area of 950 sq. km. in the Central Swamp Belt of the onshore Niger Delta. The Blocks contain several large airfields with combined ultimate recoverable reserves estimates of some 1.8 billion barrels oil and condensate and 7.1 trillion standard cubic feet gas. Blanket 3D seismic coverage was acquired over the area during the period 1989-1992. The present study was initiated to the remaining potential of the Blocks, particularly with respect to stratigraphic traps, deep plays and hydrocarbon type. A complete stratigraphic framework for the area down to the parasequence set level was first established using an integrated seismo-stratigraphic, well log and biostratigraphic approach. 3D seismic horizon maps were then generated on the main flooding surfaces and the assumed top main source rock (Akata shale) horizon. Amplitude extractions performed at these flooding surfaces reveal channelling features and hydrocarbon related amplitude anomalies. Calibration from nearby field data indicate their stratigraphic trapping potential. Isopach and stacked amplitude maps of the various parasequence sets also reveal the stratigraphic trapping potential of sand pinchout plays on the flanks of major growth faults. Finally, hydrocarbon charge into the various structural and stratigraphic prospects is estimated using a combination of basin modelling and geochemical oil typing/finger-printing techniques.

  5. BRACHET Julien, 2005, Perceptions de l'enclavement dans une oasis saharienne du Nord Niger , Espace Populations Socits, 2005-1, pp. 99-109. Perceptions de l'enclavement

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    BRACHET Julien, 2005, « Perceptions de l'enclavement dans une oasis saharienne du Nord Niger », Espace Populations Sociétés, 2005-1, pp. 99-109. 99 Perceptions de l'enclavement dans une oasis et développement Dans les représentations occidentales, le terme d'oasis évoque bien souvent celui d

  6. Estimating Migration Resistance: a Case Study of Greenlandic Arctic Terns

    E-Print Network [OSTI]

    Hensz, Christopher

    2013-01-15T23:59:59.000Z

    differences in environments along both paths Data ? Remote sensing: ? CCMP ocean winds ? AVHRR temperature ? AVHRR sea ice ? NPP layer 4 product ? Models: ? Linear exploration ? Circular-linear regression ? Non-linear regression m g C /m 2... d ay °C m /s Models ? Implemented in R ? Models: ? Linear exploration Southern Migration, 9 birds, n=929 Northern Migration, 9 birds, n=629 Future Directions 1: Finish non-linear model 2: Generalize procedure and include...

  7. Trans-Andean passage of migrating Arctic Terns over Patagonia

    E-Print Network [OSTI]

    DUFFY, D.C., MCKIGHT, A. & IRONS, D.B. Journal:  Marine Ornithology Volume:  41 Issue:  2 Section:  Year:  2013 Pages:  155-159

  8. Arctic Tern Banded in Greenland, Recovered in Ontario

    E-Print Network [OSTI]

    T. M. Shortt Journal:  Bird Banding Volume:  20 Issue:  1 (January) Section:  General Notes Year:  1949 Pages:  50

  9. Federal Long Tern Care Insurance Program (FLTCIP) | Department of Energy

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic Plan| Department of.pdf6-OPAMDepartment6Awards »Facilities | DepartmentFederal

  10. Automatic picking and attribute mapping for a quick evaluation of the potential of turbiditic sands and stratigraphic traps in frontier areas. An example from the deep offshore of the Niger Delta

    SciTech Connect (OSTI)

    Montagnier, P.; Rossi, T. (Elf Nigeria, Lagos (Nigeria)); Clergeat, B.; Dall'astam, W.F. (Elf Aquitaine Production, Paris (France))

    1996-01-01T23:59:59.000Z

    Most interpretation teams involved in the exploration of Nigeria's deep offshore have been faced with a major challenge: (1) how to scan through a large volume of 3D data in a drastically short time frame... (2) with the captive of understanding the depositional pattern of slope fan and basin floor fan turbidites to identify mostly stratigraphic traps... (3) in an environment almost devoid of reference wells and calibration. A traditional approach was likely to miss both the deadlines and the sensitivity required for the sedimentological aspects of the study. Elfs answer was to rely extensively on the advanced functionalities of the SISMAGE (TM) workstation, in order to quickly generate time and seismic attribute maps which could then be interpreted in terms of structure and sedimentology. Two critical aspects were particularly well handled by the workstation: (1) the reliability of the extrapolation process from a loose grid of manually picked lines, and (2) the generation of seismic attribute maps relative not only to surfaces (e.g. sequence boundaries), but also to whole intervals through statistical calculation. In a second stage, the interpreters were able to focus on the most prospective areas and to move on to prospect generation, with the help of AVO studies. This approach is illustrated through an example from the deep offshore of the Niger delta.

  11. Automatic picking and attribute mapping for a quick evaluation of the potential of turbiditic sands and stratigraphic traps in frontier areas. An example from the deep offshore of the Niger Delta

    SciTech Connect (OSTI)

    Montagnier, P.; Rossi, T. [Elf Nigeria, Lagos (Nigeria); Clergeat, B.; Dall`astam, W.F. [Elf Aquitaine Production, Paris (France)

    1996-12-31T23:59:59.000Z

    Most interpretation teams involved in the exploration of Nigeria`s deep offshore have been faced with a major challenge: (1) how to scan through a large volume of 3D data in a drastically short time frame... (2) with the captive of understanding the depositional pattern of slope fan and basin floor fan turbidites to identify mostly stratigraphic traps... (3) in an environment almost devoid of reference wells and calibration. A traditional approach was likely to miss both the deadlines and the sensitivity required for the sedimentological aspects of the study. Elfs answer was to rely extensively on the advanced functionalities of the SISMAGE (TM) workstation, in order to quickly generate time and seismic attribute maps which could then be interpreted in terms of structure and sedimentology. Two critical aspects were particularly well handled by the workstation: (1) the reliability of the extrapolation process from a loose grid of manually picked lines, and (2) the generation of seismic attribute maps relative not only to surfaces (e.g. sequence boundaries), but also to whole intervals through statistical calculation. In a second stage, the interpreters were able to focus on the most prospective areas and to move on to prospect generation, with the help of AVO studies. This approach is illustrated through an example from the deep offshore of the Niger delta.

  12. Niger: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: Energy Resources Jump to:

  13. Niger: 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: Energy Resources Jump to:

  14. AMF Deployment, Niamey, Niger, West Africa

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearchSOLICITATIONIMODI FICATION OF CONTRACT 1 OTATI OEP AE 2..CNRC AzoresWest

  15. The Winter Distribution of the Western Gull-billed Tern (Gelochelidon nilotica vanrossemi)

    E-Print Network [OSTI]

    ... gather in large groups and to spend considerable time in the air foraging. Conservation Implications Molina and Erwin (2006) ... the environment in the Gulf of California ecoregion. Marine Pollution Bull. 46:806–815. Páez-Osuna, F., and Ruiz-Fernández, A. C. ...

  16. Inhibition of extracellular protease secretion by Aspergillus niger using cell

    E-Print Network [OSTI]

    Gu, Tingyue

    , Forma Scientific Inc.) The spores were harvested by adding 20 mL of sterilized distilled water composition (g/L): 3 yeast extract, 3 malt extract, 5 peptone, and 10 dex- trose. Culture conditions Shake

  17. Sequence stratigraphy of Niger Delta, Robertkiri field, onshore Nigeria 

    E-Print Network [OSTI]

    Magbagbeola, Olusola Akintayo

    2007-04-25T23:59:59.000Z

    progress upward from fine-grained prodelta and deep water shales of the Akata Formation through paralic sandstone-shale units of the Agbada Formation and finally to sandy non-marine deposits of the Benin Formation. The Agbada Formation is divided into six...

  18. aspergillus niger como: Topics by E-print Network

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

    Angela Faustino Jozala 2005-01-01 169 Potencial de reduo de emisses de GEE do bioetanol: contributo da anlise de ciclo de vida da beterraba sacarina e do cardo como...

  19. aspergillus niger facilitates: Topics by E-print Network

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

    Open learner models, communication, multiple users. 1 Introduction Open learner models (OLM) are learner models that are accessible Bull, Susan 102 Facilitating Consensus,...

  20. Markets slow to develop for Niger delta gas reserves

    SciTech Connect (OSTI)

    Thomas, D. [Thomas and Associates, Hastings (United Kingdom)

    1995-11-27T23:59:59.000Z

    Nigeria produces a very high quality, light, sweet crude oil but with a large percentage of associated gas derived from a high gas-to-oil ratio. Official proved gas reserves, both associated and nonassociated, are 120 tcf. Proved and probable reserves are estimated as high as 300 tcf. The internal market for gas has only begun to develop since the 1980s, and as a result approximately 77% of associated gas production is flared. Domestic gas consumption is currently approximately 700 MMcfd and is projected to have a medium term potential of 1.450 bcfd. The article discusses resource development, gas markets, gas flaring, gas use programs, the Bonny LNG scheme, the gas reserve base, LNG project status, competition, and energy opportunities.

  1. aspergillus niger growing: Topics by E-print Network

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

    Growing Mycobacterial Infection CiteSeer Summary: acquired surgical-site infections (SSI) caused by rapidly growing mycobacteria (RGM). All episodes of RGM infection occurred...

  2. Maa-Bara : catalyzing change in Nigeria's Niger delta

    E-Print Network [OSTI]

    Okiomah, Ogheneruno E. (Ogheneruno Elo)

    2011-01-01T23:59:59.000Z

    Can architecture catalyze economic growth? This thesis serves as a design contribution to the war against poverty by proving that small-scale architectural interventions can propagate large-scale economic growth. It ...

  3. aspergillus niger glucoamylase: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 162 Identification of a Major Xylanase from Aspergillus flavus as...

  4. aspergillus niger sa1: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 168 Identification of a Major Xylanase from Aspergillus flavus as...

  5. aspergillus niger spores: Topics by E-print Network

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

    avus Biology and Medicine Websites Summary: Biocontrol S cience and Technology ( 1999) 9, 529 543 Wheat Seed Colonized with Atoxigenic ercial trials. R equirem ents for...

  6. aspergillus niger aspergillus: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 84 Identification of a Major Xylanase from Aspergillus flavus as a...

  7. aspergillus niger atcc: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17...

  8. aspergillus niger bk01: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 160 Identification of a Major Xylanase from Aspergillus flavus as...

  9. agrowastes aspergillus niger: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 159 Identification of a Major Xylanase from Aspergillus flavus as...

  10. aspergillus niger xy-1: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 162 Identification of a Major Xylanase from Aspergillus flavus as...

  11. Spatially variable fertility in a psammentic paleustalf of western Niger

    E-Print Network [OSTI]

    Gardiner, James Bronson

    1990-01-01T23:59:59.000Z

    conducted to test for nutrient deficiencies, and a dramatic plant response to heavy aoplicatlon of monocalcium phosphate was obtained. Laboratory incubations and analyses bore out that ganggani soil is severely depleted in P, and has a substantial... capacity to fix applied P in forms unavailable for plant uptake. Incubations performed according to the procedure of Fox and Kamprath (1970) showed 1) sorption of solution P continues well beyond the six days expected, and 2) applications of P at a rate...

  12. Water balance of sandy soils of Niger, West Africa

    E-Print Network [OSTI]

    Payne, William Albert

    1987-01-01T23:59:59.000Z

    . , conditions are too hot or too cold), 2) pests, 3) disease, 4) soils (i. e. , physical or chemical con- straints), and 5) water (i. e. , conditions are too wet or too dry). Kramer (1983) also states that, on the whole, lack of water reduces yields more... so high as to affect aeration. Loomis (1983) stated that variations in b are caused mostly by differences in photos'ynthetic mechanisms (i. e. the C3 photosynthetic mechanism is less efficient than C which is in turn less efficient than the CAM...

  13. arab republic niger: Topics by E-print Network

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

    Arabic text. I. Z. Shaaban 157 Managing the transition: an analysis of renewable energy policies in resource-rich Arab states with a comparative focus on the United Arab...

  14. The moisture retention characteristic of four soils from Niger

    E-Print Network [OSTI]

    Landeck, Jonathon Keith

    1984-01-01T23:59:59.000Z

    gradient. Determination of the hydraulic gradient through unsatu- rated soil is best obtained by the "instantaneous profile method" (Hillel 1972) which requires frequent measurement of soil wetness and matric suction under conditions of internal...-drained, unsaturated, low-solute soil. Also known as soil-water suction, matric potential (M) is a function of the interaction between solid soil parti- cles and the soil water. The nature of these interactions is a function of the arrangement, sizes, and shapes...

  15. Sequence stratigraphy of Niger Delta, Robertkiri field, onshore Nigeria

    E-Print Network [OSTI]

    Magbagbeola, Olusola Akintayo

    2007-04-25T23:59:59.000Z

    progress upward from fine-grained prodelta and deep water shales of the Akata Formation through paralic sandstone-shale units of the Agbada Formation and finally to sandy non-marine deposits of the Benin Formation. The Agbada Formation is divided into six...

  16. aspergillus niger cbs: Topics by E-print Network

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

    Hannah Appel S.V. Ciriacy-Wantrup Postdoctoral Fellow Geosciences Websites Summary: Graeber. Radical History Review. Winter 2014 (118). 2013 Book Review: Red Tape: Bureaucracy,...

  17. aspergillus niger phytase: Topics by E-print Network

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

    Hannah Appel S.V. Ciriacy-Wantrup Postdoctoral Fellow Geosciences Websites Summary: Graeber. Radical History Review. Winter 2014 (118). 2013 Book Review: Red Tape: Bureaucracy,...

  18. antelope hippotragus niger: Topics by E-print Network

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

    Hannah Appel S.V. Ciriacy-Wantrup Postdoctoral Fellow Geosciences Websites Summary: Graeber. Radical History Review. Winter 2014 (118). 2013 Book Review: Red Tape: Bureaucracy,...

  19. aspergillus niger mutant: Topics by E-print Network

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

    type. Although some of the more virulent color mutants showed increased resistance to hydrogen peroxide, overall phenotypic characterizations including secondary metabolite...

  20. Mobile Facility Records Annual Climate Cycle in Niger, Africa

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA /Ml'. William Hirst Hirst Enterprises, Inc. P.O.

  1. reconnat aisment qu'il faut introduire les tei-mes du 2e degr en ( long.) et ( lat.) et adopter une formule 2 tern~ies.

    E-Print Network [OSTI]

    Boyer, Edmond

    'un magnétomètre. Je pouvais ainsi étudier, d'une part, l'aimantation acquise par les dépôts pendant lenr formation

  2. Optimized Synthesis of an Orthogonally Protected Glucosamine SynthesisofanOrthogonallyProtectedGlucosamineJess M. Hernndez-Torres, Siong-Tern Liew, Jihane Achkar, Alexander Wei*

    E-Print Network [OSTI]

    Wei, Alexander

    : 1437-210X,E;2002,0,04,0487,0490,ftx,en;M14101SS.pdf. © Georg Thieme Verlag Stuttgart · New York ISSN preparation of monosaccharide precursors with orthogonal protecting group systems. Although nu- merous

  3. Studien zu den Nachweiseigenschaften des OPERADriftrohrenspektrometers

    E-Print Network [OSTI]

    - tern. Im Rahmen der am LNGS auftretenden Temperaturschwankungen von 6 K tritt eine Unsicherheit in der

  4. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01T23:59:59.000Z

    system also incorporates mechanical devices to move energy, then the sys tern is classified as hybrid. *

  5. Aspergillus niger is a filamentous fungus that is ubiquitous and commonly found on decaying plant material. A. niger has a saprophytic lifestyle and plays an important role in

    E-Print Network [OSTI]

    Hille, Sander

    that protein folding in the endoplasmic reticulum (ER) is a major bottleneck in heterologous. The ER constitutes a major part of the secretory pathway and it is here that protein folding takes place that assist in protein folding. In this thesis we focused on the properties and the regulation

  6. Techniques for analyzing the effects of translocation on fox squirrels (Sciurus niger)

    E-Print Network [OSTI]

    Ten Brink, Craig Eric

    1996-01-01T23:59:59.000Z

    . This study took place on the Noble Foundation's Red River Demonstration and Research Farm (RRDRF) in Love County, Oklahoma, from May to October 1995, and was designed to develop a methodology to test the effect of translocation on fox squirrel populations...

  7. Contour strip rainfall harvesting for cereals production on sandy soils in Niger (West Africa)

    E-Print Network [OSTI]

    Zaongo, Christophe Guy Ludovic

    1988-01-01T23:59:59.000Z

    for diverse purposes: for veterinary clinics by the University of Sidney (Geddes, 1960), livestock and homes in Arizona by Cluff (1967), wildlife water supplies in Canada (Geddes, 1961) pasture in Kenya (Hillman, 1980), agriculture in the Texas High Plains... locations, with 2 levels of fertilization and 2 plant densities. Dry matter production was significantly increased with contour strip rainfall harvesting (CSRH). Grain yield was increased from 56 to l20(y(). Crop response to the harvested water indicated...

  8. Regional fault pattern study - Sonam/Ajapa area offshore Western Niger Delta

    SciTech Connect (OSTI)

    Kanu, K.A.; Glass, J.E.; Okoro, P.C. [Chevron Nigeria Ltd., Lagos (Nigeria)] [and others

    1995-08-01T23:59:59.000Z

    A total of 900 km{sup 2} of high quality 3-D data was used to interpret structural trends: an inner trend containing the Mefa, Meji and Ajapa oil fields and a younger outer trend containing the large Sonam condensate field. Each trend is bounded by a large, regional down-to-the-coast fault system on the northeast and its associated counter-regional fault to the southwest. Hydrocarbon accumulations are contained within rollover anticlines adjacent to the main seaward-dipping fault trends. However, our data shows that structural geometries within each trend are highly three-dimensional. Anticlinal end closure is achieved by changes in fault detachment level and displacement which generally occur near major fault junctions. Thus, significant accumulations are associated with first-order high-relief accommodation zones. In the absence of such first-order closure, we cannot rely upon the systems of relatively small faults that occur on seaward dipping flanks and in areas of crestal collapse. Detailed 3-D mapping, supported by drilling results, shows that such faults do not link strongly together, thereby allowing leakage of hydrocarbons mound fault tips and up relay ramps between faults.

  9. An interdisciplinary approach to reservoir management: The Malu Field, West Niger Delta, Nigeria

    SciTech Connect (OSTI)

    Patterson, B.A.; Bluhm, C.T. [Chevron Overseas Petroleum, San Ramon, CA (United States); Adokpaye, E.U. [Chevron Nigeria Limited, Lekki (Nigeria)] [and others

    1995-08-01T23:59:59.000Z

    The Malu Field is 175 kilometers southeast of Lagos, offshore Nigeria. The field was discovered in 1967 and brought on stream in 1971. Peak production reached 31,300 barrels per day in 1972. Twenty-six wells have been drilled in the thirty-six square kilometer size field. In 1990 original-oil-in-place was estimated at 345 million barrels with cumulative production of 109 million barrels and an estimated 40 million barrels of remaining reserves. The Main Field review was initiated in 1994 to resolve structural and production inconsistencies and therefore improve reservoir performance. The tools used include reprocessed three-dimensional seismic, oil chemistry (primarily gas chromatography), and production data. The complexly faulted field is subdivided into seven different fault blocks. Growth faults generally trend northwest to southeast and are downthrown to the west. Twenty-five different hydrocarbon-bearing sands have been identified within the field. These sands are separated into sixty-three different reservoirs by the series of southeast trending growth faults. Most sands are laterally continuous within mapped fault blocks except in east Malu. Cross-fault communication of oils occurs among several of the shallow reservoirs in west Malu allowing wells to deplete unintended horizons. In addition, three of the dual string completions are producing oil only from only the upper sands. The integration of seismic, oil chemistry, and production data allows more efficient management of production by providing accurate structure maps, reserve estimates, drainage pathways, and justification for workovers and future development drilling.

  10. aspergillus niger l-arabinose: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 167 Identification of a Major Xylanase from Aspergillus flavus as...

  11. aspergillus niger uam-gs1: Topics by E-print Network

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

    spore yield of wheat is com pared to other substrates. T he study suggest s that the m ost cost Cotty, Peter J. 159 Identification of a Major Xylanase from Aspergillus flavus as...

  12. Pearl millet (Pennisetum typhoides) response to soil variability in sandy ustalfs near Niamey, Niger, West Africa

    E-Print Network [OSTI]

    Wendt, John William

    1986-01-01T23:59:59.000Z

    -------%40AC EXTR BASfS------ KCL EXTR NAOAC BASE EXTR NO C (H20) (0. 1N CA NG NA K TOTAL AL CEC ECEC SAT ESP FE I: :1 KCL ----------------------NE 598 0. 21 4. 6 599 0. 11 4. 4 600 0. 06 4. 6 O. 1 0. I 0. 0 0. 0 0. 2 0. 1 0. 0 O. 1 0. 0 0. 0 0 0 D 0 0...

  13. On farm yield and water use response of pearl millet to different management practices in Niger

    E-Print Network [OSTI]

    Manyame, Comfort

    2009-05-15T23:59:59.000Z

    . The management practices tested were: 1) Five manure treatments (no manure, transported manure, current corralling, a year after corralling, and two years after corralling); 2) The microdose technology (20 kg di-ammonium phosphate ha-1, and 20 kg di...

  14. Niger-National Adaptation Plan Global Support Programme (NAP-GSP) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns Jump to:Neppelsource History ViewNextNicaragua:Energy

  15. PRESENTATION TITLE

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

    Update - Cultural Resources Impacts Arkansas River Navigation Improvement Oklahoma Comprehensive Water Plan Update BUILDING STRONG Interior Least Tern Operations and...

  16. Comparative genomics of citric-acid producing Aspergillus niger ATCC 1015 versus enzyme-producing CBS 513.88

    E-Print Network [OSTI]

    Grigoriev, Igor V.

    2011-01-01T23:59:59.000Z

    Martinsried, Germany. g Novozymes Inc, 1445 Drew Avenue,6, E-41080 Sevilla, Spain. j Novozymes A/S, Hallas Alle 1,Martinsried,  Germany.   g Novozymes  Inc,  1445  Drew 

  17. A geospatial analysis of market integration: the case of the 2004/5 food crisis in Niger

    E-Print Network [OSTI]

    Shin, Michael

    2010-01-01T23:59:59.000Z

    Adapted from Famine Early Warning Systems (FEWS) Net LIBYAGlobal Information and Early Warning System (FAO-GIEWS)Information and Early Warning System (GIEWS) of the Food and

  18. A geospatial analysis of market integration: the case of the 2004/5 food crisis in Niger

    E-Print Network [OSTI]

    Shin, Michael

    2010-01-01T23:59:59.000Z

    systems (GIS) and related geospatial technology (e.g. GPS,and the influence of geospatial technology on democracy.He has also served as a geospatial technology expert/

  19. A geospatial analysis of market integration: the case of the 2004/5 food crisis in Niger

    E-Print Network [OSTI]

    Shin, Michael

    2010-01-01T23:59:59.000Z

    ORIGINAL PAPER A geospatial analysis of market integration:dominance of the A geospatial analysis of market integrationsegments and A geospatial analysis of market integration

  20. Influence of Neem windbreaks on yield, microclimate, and water use of millet and sorghum in Niger, West Africa

    E-Print Network [OSTI]

    Long, Steven Patrick

    1989-01-01T23:59:59.000Z

    . (May 1989) Steven Patrick Long, B. S. , University of New Hampshire Chair of Advisory Committee: Dr. Kirk Brown The effect of mature Neem windbreaks on cereal production was studied in a field plot experiment during the 1984 and 19S5 growing... deviations in parentheses 2. Summary of 1985 millet and sorghum harvest data Page 45 means for protected (P), unprotected (UP), fertilized (F), and unfertilized (UF) plots . . 47 3. Averaged half-hourly ratios of wind speeds in protected...

  1. Paintball Summer Weather

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    France Iraq Japan Korea Kuwait Libya Netherlands Niger Peru Qatar Saudi Arabia Spain Taiwan Thailand

  2. E-Print Network 3.0 - anesthesia epidural Sample Search Results

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

    of healthy full-tern newborns delivered vaginally... concentrations after epidural infusion during labor. Anesthesia and Analgesia 1995; 81: 829-32. 26 Wittels B... ORIGINAL...

  3. argentinean patagonia species: Topics by E-print Network

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

    We assessed migration routes of Arctic Terns Sterna paradisaea breeding in Prince, Argentina, Chile, geolocation, Humboldt Current, migration, Patagonia, Sterna paradisaea the...

  4. asturias spain genetic: Topics by E-print Network

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

    true of Jurassic turtles from Wes- tern Europe. A new genus and species of Late Jurassic turtle Benton, Michael 204 Last date modified 11613 Location and Institution SPAIN...

  5. -A ------Science Service _I_-Feature ? WHYFHEOCUTIOW ?

    E-Print Network [OSTI]

    is much mox One way t o describe climate is i n terns of frequencies of ciffferent types of weather, lor

  6. DOE'S ENERGY DATA BASE (EDB) VERSUS OTHER ENERGY-RELATED DATA BASES: A COMPARATIVE ANALYSIS

    E-Print Network [OSTI]

    Robinson, J.

    2010-01-01T23:59:59.000Z

    terns on safety and accident analysis since t h i s i s theACCIDENT ANALYSIS ACCIDENT, TRANSPORTATION SAFETY ANALYSISInformation Center Data Base RISK HAZARDS ANALYSIS ACCIDENT

  7. High resolution sequence stratigraphic and reservoir characterization studies of D-07, D-08 and E-01 sands, Block 2 Meren field, offshore Niger Delta 

    E-Print Network [OSTI]

    Esan, Adegbenga Oluwafemi

    2004-09-30T23:59:59.000Z

    -grained sandy mudstone (lower shoreface facies); and (7) massive, silty shales (offshore marine facies). Lithofacies have distinct mean petrophysical properties, although there is overlap in the range of values. The highest quality reservoir deposits are cross...

  8. A radio-tracking study of home range, movements, and habitat uses of the fox squirrel (Sciurus niger) in East Texas

    E-Print Network [OSTI]

    Geeslin, Herbert Glyn

    1970-01-01T23:59:59.000Z

    - briar (Smilax bona-nox), hawthorn (Crataegus spp. ), and increased amounts of hollies (Ilex spp. ). This are- was rather low ly. ng and contained two temporary drainage streams. Standing water existed for 1 or 2 days following moderate to heavy...

  9. De schimmel Aspergillus niger is een industrieel belangrijk micro-organisme voor de productie van enzymen zoals amylases, proteases, pectinases en lipases. Deze enzymen

    E-Print Network [OSTI]

    Hille, Sander

    bioethanol. In industriële fermentaties kan met de schimmel een productie niveau bereikt worden van meer dan

  10. High resolution sequence stratigraphic and reservoir characterization studies of D-07, D-08 and E-01 sands, Block 2 Meren field, offshore Niger Delta

    E-Print Network [OSTI]

    Esan, Adegbenga Oluwafemi

    2004-09-30T23:59:59.000Z

    - to fine-grained poorly-sorted sandstone (delta front facies); (5) muddy silt-to fine- grained wavy-bedded sandstone (lower shoreface facies); (6) very-fine- to fine-grained iv sandy mudstone (lower shoreface facies); and (7) massive, silty shales.... The progradational parasequence set consists of upward-coarsening delta front to upper shoreface facies, whereas the upward- fining retrogradational parasequence sets are composed of middle to lower shoreface deposits overlain by offshore marine shales...

  11. The WAMME regional model intercomparison study

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    of Physics, Universite Abdou Moumouni, Niamey, Niger L. M.2007) was run at the Universite Abdou Moumouni (UAM, Niamey,

  12. E-Print Network 3.0 - amapa brazil aplicacao Sample Search Results

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

    Fisheries Review Collection: Environmental Sciences and Ecology 53 Genetic structure, population dynamics, and conservation of Black caiman (Melanosuchus niger) Summary: ....

  13. Paintball Countries

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    Korea Libya Niger Peru Oman Qatar Saudi Arabia Spain Sri Lanka Taiwan Thailand Turkey Ukraine UAE United

  14. SUBJECT-SPECIFIC CHANNEL SELECTION FOR CLASSIFICATION OF MOTOR IMAGERY ELECTROENCEPHALOGRAPHIC DATA

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to generate computer commands. Keep- ing a minimal number of channels (electrodes) is essential for de.g. common spatial pat- terns (CSP) [5]) can improve the SNR and extract discriminative fea- tures from

  15. JOURNALOF NEUROPHYSIOLOGY Vol. 48, No. 6, December 1982. Printed in U.S.A.

    E-Print Network [OSTI]

    Byrne, John H.

    Producing and Modulating Opaline Gland Contraction in Aplysia califomica SUSAN H. TRITT AND JOHN. H. BYRNE 1347 #12;1348 S. H. TRITT AND J. H. BYRNE tern to address the following questions. What

  16. adaptive genetic variation: Topics by E-print Network

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

    a time. The question remains whether similar pat- terns of spatial genetic variation Fortuna, Miguel A. 39 Self-Adaptation in Genetic Algorithms CiteSeer Summary: Within Genetic...

  17. A Temporal Motif Mining Approach to Unsupervised Energy Disaggregation: Applications to Residential and Commercial Buildings

    E-Print Network [OSTI]

    Ramakrishnan, Naren

    A Temporal Motif Mining Approach to Unsupervised Energy Disaggregation: Applications to Residential consumers with detailed feedback on their energy consumption pat- terns. By contrasting such `drill monitoring has emerged as an attractive approach to study energy consumption patterns without instrumenting

  18. Clim. Past, 9, 14171430, 2013 www.clim-past.net/9/1417/2013/

    E-Print Network [OSTI]

    by the Harmattan northeasterly wind during the dry season (Novem- ber to March) and the monsoon southwesterlies during the wet season (from June to September). A Harmattan wind pat- tern is inferred from coastal

  19. Relationship between physical, chemical and processing properties of rice

    E-Print Network [OSTI]

    Parial, Lucila Beatrice Calupitan

    1968-01-01T23:59:59.000Z

    gelatinization tempera- ture. Kihara and Kajikawa (27) noted that high temperatures during ripening gave a slower rate of alkal1 d1gestion of the endosperm which indicated a high gelatinization temperature range. Relation of elatinization tern erature to some...

  20. Relationship between physical, chemical and processing properties of rice 

    E-Print Network [OSTI]

    Parial, Lucila Beatrice Calupitan

    1968-01-01T23:59:59.000Z

    gelatinization tempera- ture. Kihara and Kajikawa (27) noted that high temperatures during ripening gave a slower rate of alkal1 d1gestion of the endosperm which indicated a high gelatinization temperature range. Relation of elatinization tern erature to some...

  1. Fast algorithms and solvers in computational electromagnetics and micromagnetics on GPUs

    E-Print Network [OSTI]

    Li, Shaojing

    2012-01-01T23:59:59.000Z

    B ? w ? / w for three BPM structures and two magnetizationof bit pat- terned media (BPM). The other use case is thesystem. The simulation of the BPM and the MAMR applied on

  2. PARALLEL FINITE ELEMENT COMPUTATION OF 3D INCOMPRESSIBLE FLOWS ON MPPs

    E-Print Network [OSTI]

    Tezduyar, Tayfun E.

    forming the Karman street. We also present results from the unsteady flow past a sphere, where intricate vortex shedding pat- terns are observed. Comparisons are made between computations on a semi

  3. Reticulate reef patterns antecedent karst versus self-organization

    E-Print Network [OSTI]

    Purkis, Sam

    - terns and ring reefs (faros); in addition, they 1© 2014 The Authors. Sedimentology © 2014 International Association of Sedimentologists Sedimentology (2014) doi: 10.1111/sed.12172 #12;invoke hydrodynamic factors

  4. Patterns and Skeletons for Parallel and Distributed Computing

    E-Print Network [OSTI]

    Walker, David W.

    modelling some physical phenomenon, such as an oil spill, to the universal availability of customised design pat- terns that become important in the context of such a service model. A central assumption

  5. Research, Monitoring, and Evaluation of Avian Predation on Salmonid Smolts in the Lower and Mid-Columbia River, 2008 Draft Season Summary.

    SciTech Connect (OSTI)

    Roby, Daniel D. [USGS - Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University; Collis, Ken [Real Time Research, Inc.; Lyons, Donald E. [USGS - Oregon Cooperative Fish and Wildlife Research Unit, Oregon State University

    2009-07-08T23:59:59.000Z

    This report describes investigations into predation by piscivorous colonial waterbirds on juvenile salmonids (Oncorhynchus spp.) from throughout the Columbia River basin during 2008. East Sand Island in the Columbia River estuary again supported the largest known breeding colony of Caspian terns (Hydroprogne caspia) in the world (approximately 10,700 breeding pairs) and the largest breeding colony of double-crested cormorants (Phalacrocorax auritus) in western North America (approximately 10,950 breeding pairs). The Caspian tern colony increased from 2007, but not significantly so, while the double-crested cormorant colony experienced a significant decline (20%) from 2007. Average cormorant nesting success in 2008, however, was down only slightly from 2007, suggesting that food supply during the 2008 nesting season was not the principal cause of the decline in cormorant colony size. Total consumption of juvenile salmonids by East Sand Island Caspian terns in 2008 was approximately 6.7 million smolts (95% c.i. = 5.8-7.5 million). Caspian terns nesting on East Sand Island continued to rely primarily on marine forage fishes as a food supply. Based on smolt PIT tag recoveries on the East Sand Island Caspian tern colony, predation rates were highest on steelhead in 2008; minimum predation rates on steelhead smolts detected passing Bonneville Dam averaged 8.3% for wild smolts and 10.7% for hatchery-raised smolts. In 2007, total smolt consumption by East Sand Island double-crested cormorants was about 9.2 million juvenile salmonids (95% c.i. = 4.4-14.0 million), similar to or greater than that of East Sand Island Caspian terns during that year (5.5 million juvenile salmonids; 95% c.i. = 4.8-6.2 million). The numbers of smolt PIT tags recovered on the cormorant colony in 2008 were roughly proportional to the relative availability of PIT-tagged salmonids released in the Basin, suggesting that cormorant predation on salmonid smolts in the estuary was less selective than tern predation. Cormorant predation rates in excess of 30%, however, were observed for some groups of hatchery-reared fall Chinook salmon released downstream of Bonneville Dam. Implementation of the federal plan 'Caspian Tern Management to Reduce Predation of Juvenile Salmonids in the Columbia River Estuary' was initiated in 2008 with construction by the Corps of Engineers of two alternative colony sites for Caspian terns in interior Oregon: a 1-acre island on Crump Lake in the Warner Valley and a 1-acre island on Fern Ridge Reservoir near Eugene. We deployed Caspian tern social attraction (decoys and sound systems) on these two islands and monitored for Caspian tern nesting. Caspian terns quickly colonized the Crump Lake tern island; about 430 pairs nested there, including 5 terns that had been banded at the East Sand Island colony in the Columbia River estuary, over 500 km to the northwest. No Caspian terns nested at the Fern Ridge tern island in 2008, but up to 9 Caspian terns were recorded roosting on the island after the nesting season. There were two breeding colonies of Caspian terns on the mid-Columbia River in 2008: (1) about 388 pairs nested at the historical colony on Crescent Island in the McNary Pool and (2) about 100 pairs nested at a relatively new colony site on Rock Island in the John Day Pool. Nesting success at the Crescent Island tern colony was only 0.28 young fledged per breeding pair, the lowest nesting success recorded at that colony since monitoring began in 2000, while only three fledglings were raised at the Rock Island tern colony. The diet of Crescent Island Caspian terns consisted of 68% salmonid smolts; total smolt consumption was estimated at 330,000. Since 2004, total smolt consumption by Crescent Island terns has declined by 34%, due mostly to a decline in colony size, while steelhead consumption has increased 10% during this same period. In 2008, approximately 64,000 steelhead smolts were consumed by Caspian terns nesting at Crescent Island. Based on smolt PIT tag recoveries on the Crescent Island Caspian tern colony, the average

  6. Bridging the Gap: Studying Sequence to Product Correlation among Fungal Polyketide Synthases

    E-Print Network [OSTI]

    Zabala, Angelica Obusan

    2014-01-01T23:59:59.000Z

    Citric and gluconic acid production from fig by Aspergillus niger using solid-state fermentation."industrial fermentation for the production of citric acid,

  7. Wiley Visiting Scientists - Past and Current | EMSL

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

    organisms that produce high levels of fatty acids. He will apply his results to engineer industrially important molds species Aspergillus oryzae and A. niger. In addition to...

  8. Fate of Radionuclides in Wastewater Treatment Plants

    E-Print Network [OSTI]

    Shabani Samgh Abadi, Farzaneh

    2013-01-01T23:59:59.000Z

    can be mined in Niger, Kazakhstan, Uzbekistan and Gabon, 4)can be found in China, Kazakhstan, Russian Federation andCanada, Australia and Kazakhstan. During the period between

  9. INSAG-15 Key Practical Issues

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

    MONGOLIA MOROCCO MYANMAR NAMIBIA NETHERLANDS NEW ZEALAND NICARAGUA NIGER NIGERIA NORWAY PAKISTAN PANAMA PARAGUAY PERU PHILIPPINES POLAND PORTUGAL QATAR REPUBLIC OF MOLDOVA...

  10. --No Title--

    Gasoline and Diesel Fuel Update (EIA)

    Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norway Oman Pakistan Palestine Panama Papua New Guinea Paraguay Peru Philippines Poland...

  11. DEVELOPING SAFETY CULTURE IN NUCLEAR ACTIVITIES Practical Suggestions

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

    MONGOLIA MOROCCO MYANMAR NAMIBIA NETHERLANDS NEW ZEALAND NICARAGUA NIGER NIGERIA NORWAY PAKISTAN PANAMA PARAGUAY PERU PHILIPPINES POLAND PORTUGAL QATAR REPUBLIC OF MOLDOVA...

  12. SAFETY SERIES No.75-INSAG-4 INTERNATIONAL ATOMIC ENERGY AGENCY...

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

    MONGOLIA MOROCCO MYANMAR NAMIBIA NETHERLANDS NEW ZEALAND NICARAGUA NIGER NIGERIA NORWAY PAKISTAN PANAMA PARAGUAY PERU PHILIPPINES POLAND PORTUGAL QATAR ROMANIA SAUDI ARABIA...

  13. WHO Report on the Global Tobacco Epidemic 2011: Warning about the dangers of tobacco

    E-Print Network [OSTI]

    WHO

    2011-01-01T23:59:59.000Z

    Kuwait, Madagascar, Montenegro, Myanmar, Niger, Norway,Luxembourg Malta Monaco Montenegro Netherlands Norway PolandLuxembourg Malta Monaco 7 Montenegro Netherlands Norway

  14. E-Print Network 3.0 - algeria iraq jordan Sample Search Results

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

    East Timor Eritrea Ethiopia Haiti Iran Iraq - Kurdish Region Ivory Coast Lebanon Libya Saudi... elsewhere) Jordan Mauritania Niger North Korea Papua New Guinea Peru Qatar...

  15. International reserves management and the current account

    E-Print Network [OSTI]

    Aizenman, Joshua

    2007-01-01T23:59:59.000Z

    Mauritania Mauritius Moldova Mongolia Niger Nigeria PakistanMali Mauritania Moldova Mongolia Mozambique Myanmar NepalMauritius Mexico Moldova Mongolia Morocco Mozambique Namibia

  16. The Right to Life with Dignity: Economic and Social Rights Respect in the World

    E-Print Network [OSTI]

    Kolp, Felicity Ann

    2010-01-01T23:59:59.000Z

    Guinea Guinea-Bissau Guyana Haiti Honduras Hungary IcelandGuinea Papua New Guinea Haiti Mozambique Pakistan AppendixSierra Leone Bhutan Chad Haiti Ethiopia Niger Somalia

  17. Influenza A and paramyxoviruses in turkeys

    E-Print Network [OSTI]

    Ranck, Floyd Merrill

    1968-01-01T23:59:59.000Z

    plague virus, virus "N" isolated in Germany in 1949, and isolates from turkeys, chickens, ducks and terns isolated during a period from 1956 to 1963. The strains were divided into three closely related groups, Becker determined that the morphology... Newcastle disease from the respiratory tract of chickens. Avian Dis. 5, 253-269, 1961. 6. Bankowski, R. A. , and T. Mikamk An apparent new respira- tory disease of turkeys. Proc. 68th USLSA, 495-517, 1964. 7. Becker, W. B. The morphology of tern virus...

  18. Informatica Grafica per le arti

    E-Print Network [OSTI]

    Gribaudo, Marco

    piani ortogonali. y z x Sistemi di coordinate Una coordinata cartesiana si basa su 3 assi, chiamati asse x, asse y e asse z. Destrorsa Sinistrorsa y z x y z x Sistemi di coordinate Esistono due tipi differenti di terne di assi: quella destrorsa e sinistrorsa. Si distinguono a seconda della direzione dell'asse

  19. Mange brikker skal falde p plads fr de ti EU kandidatlande er parat

    E-Print Network [OSTI]

    bistår en myn- dighed i et kandidatland med at tilpasse love og regler. I Ungarn sidder således Jens foregået forskellige ste- der i Ungarn, og underviserne har - ud over Jens Ulrik Jensen - været Igor Kozine som selve gennemførelsen af projek- terne. Foruden i Ungarn bidrager Risø med løsning af tilsvarende

  20. Sandbar Dynamics of the Lower Platte

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Sandbar Dynamics of the Lower Platte River Pilot Study 2011 ­ methods and initial results In cooperation with Lower Platte South Natural Resources District By Jason S. Alexander and Ron Zelt Photo credits: Nebraska Tern and Plover Conservation Partnership #12;Why does the Platte River provide excellent

  1. On-chip silicon optical phased array for two-dimensional beam steering

    E-Print Network [OSTI]

    Chen, Ray

    and thermo-optic phase shifting with a switching power of P 20 mW per channel. Using a silicon waveguide-channel un- equally spaced OPA [3]. However, for many applications two-dimensional (2D) steering, rib waveguides are needed for single-mode operation, thereby adding additional pat- terning steps

  2. Visually Accurate Multi-Field Weather Visualization Purdue University

    E-Print Network [OSTI]

    Utah, University of

    -dimensional, and involve global scale phenomena. Less commonly, but no less importantly, weather events are examined weather pat- terns, they are ineffective when examining storm scale weather phe- nomena. Two@cs.utah.edu Jason Levit University of Oklahoma jlevit@ou.edu Figure 1: Time Series of a Cloud Scale Visualization

  3. Fabrication of quantum point contacts by engraving GaAsAlGaAs heterostructures with a diamond tip

    E-Print Network [OSTI]

    Hohls, Frank

    by hot-filament chemical vapor deposition of polycrystalline diamond onto a prepat- terned siliconFabrication of quantum point contacts by engraving GaAsÕAlGaAs heterostructures with a diamond tip for publication 17 July 2002 We use the all-diamond tip of an atomic force microscope for the direct engraving

  4. In: Proceedings of the 2005 IEEE International Symposium on Workload Characterization (IISWC), October 2005, c IEEE Comprehensive Throughput Evaluation of LANs in Clusters of PCs

    E-Print Network [OSTI]

    characteristics of net- works for clusters. A first microbenchmark tests the basic pro- cessing limitations. A second microbenchmark tests arbitrary communication pat- terns by pairwise connecting nodes for high-speed throughput tests. A third and slightly more realistic microbenchmark ex- ecutes an all-to-all personalised

  5. Structural Topic Model for Latent Topical Structure Analysis Hongning Wang, Duo Zhang, ChengXiang Zhai

    E-Print Network [OSTI]

    Zhai, ChengXiang

    models (Hofmann, 1999; Blei et al., 2003) to explore word co-occurrence pat- terns, i.e. topics, embedded.g., (Blei and Jordan, 2003; Blei and Lafferty, 2007; Mei et al., 2007; Lu and Zhai, 2008)). In general (Blei et al., 2003), i.e., the doc- ument generation probabilities are invariant to con- tent

  6. USGS-OregonCooperative Fish & Wildlife Research Unit

    E-Print Network [OSTI]

    Predator Control to Manage Colony Location Desired Site: Undesired Site: Rice Island East Sand Island #12 due to avian predation is insignificant #12;Smolt Consumption by East Sand Island Caspian Terns-listed salmonids #12;Potentialchanges in (%) for elimination of the double-crested cormorant colony on East Sand

  7. JOURNAL OF LATEX CLASS FILES, VOL. 1, NO. 11, NOVEMBER 2002 1 Multifrequency Pattern Generation Using

    E-Print Network [OSTI]

    Palacios, and Ricardo Carretero-Gonz´alez Space and Naval Warfare Systems Center, Code 2363, 53560 Hull of networked electronic circuits, which have symmetrical properties, for generating pat- terns with multiple. INTRODUCTION Recently multifrequency patterns have been observed in electronic circuits [1]. These systems have

  8. Fourier analysis of X-ray micro-diffraction profiles to characterize laser shock peened metals

    E-Print Network [OSTI]

    Yao, Y. Lawrence

    .L., 1950. The effect of cold-work distortion on X-ray pat- terns. Journal of Applied Physics 21, 595LSP need to be further studied from the measured X-ray micro-diffraction profile. Broadening of X-rayFourier analysis of X-ray micro-diffraction profiles to characterize laser shock peened metals

  9. Murray Rosenthal's life in Oak Ridge has spanned more than half a century.

    E-Print Network [OSTI]

    young scientists of the time were excited about the early nuclear technology work performed at Oak Ridge contributed its technology to the development of a nuclear-powered mer- chant vessel, the U.S.S. Savannah that college in- terns with majors related to nuclear technology come to the Laboratory each summer. "A lot has

  10. DETERMINANTES DE LA DISTRIBUCIN GEOGRFICA DE LA FAMILIA TURDIDAE EN LA PENNSULA IBRICA

    E-Print Network [OSTI]

    Carrascal, Luis M.

    Túrdidos nidificantes en la península Ibérica. Examinar las predicciones del calentamiento global y de la hipótesis de of 17 breeding species of Turdidae in the Iberian Peninsula. To test the predictions of global climatic their effects do not support current predictions on alteration of distribution pat- terns due to global warming

  11. STAG UK Newsletter Issue 15

    E-Print Network [OSTI]

    1975-01-01T23:59:59.000Z

    any money 'you mi'ght be 'better to write'to, them enclosing an In ternEitional Repl,yCoupon' (Obtainable at most Post Offices) to ask for their rates for abroad. ' 6 According to Andromeda, 'The Saving of Star Trek ' by Stephen Whitfield should...

  12. Tensor analysis applied to symmetrical components

    E-Print Network [OSTI]

    Iriarte, Modesto

    1949-01-01T23:59:59.000Z

    + dbms+ b%g) ? (c e9 +$h~ + k ~b) (&~) qk-4h $q-dk dh- &'j ch- bk b& a'k -&Q bg-~ (7e) provided &8 0 ~ Eaoh tern is understood to be nultiplied by the soalar ks seen, froa what has been stated, in order to find the inverse of a entre it nust...

  13. In Proceedings of 2002 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS-2002), Lausanne, Switzerland, Sept. 30 -Oct. 4, 2002, pp. 2551-2556

    E-Print Network [OSTI]

    Mataric, Maja J.

    -temporal non-linear dimension re- duction technique on a set of motion segments. From this transformation movement pat- terns and skills by observation, to be possible, such mechanisms for both perception at their core as- sume that some structure exists in the motion being generated or analyzed. If we assume

  14. VISUALIZING SPATIAL PROCESSES USING RIPLEY'S CORRECTION: AN APPLICATION TO BODILY-INJURY CAR

    E-Print Network [OSTI]

    to understand when and where traffic accident occurred. Analysis of spatial pat- terns is then a crucial issue ACCIDENT LOCATION. ARTHUR CHARPENTIER AND EWEN GALLIC Keywords: border bias; car accident; frontier; GIS. An illustration on location of bodily-injury car accident (and hot spots) in the western part of France

  15. Colloidal electroconvection in a thin horizontal cell: I. microscopic cooperative patterns at low voltage

    E-Print Network [OSTI]

    Grier, David

    to an aqueous colloidal dispersion establishes a complex interplay of forces among the highly mobile simple ions in binary colloids [15]. More recently, a colloidal model system has been intro­ duced whose phase diagram the remarkably diverse set of pat­ terns that charged colloidal particles can form as they sediment under gravity

  16. Colloidal electroconvection in a thin horizontal cell: I. microscopic cooperative patterns at low voltage

    E-Print Network [OSTI]

    Grier, David

    to an aqueous colloidal dispersion establishes a complex interplay of forces among the highly mobile simple ions colloids [15]. More recently, a colloidal model system has been intro- duced whose phase diagram can of pat- terns that charged colloidal particles can form as they sediment under gravity in a vertical DC

  17. Practical Application of Second Law Costing Methods

    E-Print Network [OSTI]

    Wepfer, W. J.; Gaggioli, R. A.

    1983-01-01T23:59:59.000Z

    and The Design of Heat Sys terns," Trans. A.S.M.E. J. Eng. Power, 92, (1970), 27-34. 10. Szargut, J., "Zagadniene Racjonalnej Tareyty Oplat Za Pare I Goraca Wode," GospodOJ"ka Paliwami Energia, 14, No.4, 132-135, 1963. 11. Bergmann, E. and Schmidt, K...

  18. A Wakeup Call for Internet Monitoring Systems: The Case for Distributed Triggers

    E-Print Network [OSTI]

    is not perceived to be a DDoS attack, e.g., the aggregate traffic to any destination from a set of nodes runningA Wakeup Call for Internet Monitoring Systems: The Case for Distributed Triggers Ankur Jain is to continually record system state (e.g., to study traffic pat- terns in a network) or to obtain an instantaneous

  19. Microsoft Local Language Program Customer Case Study

    E-Print Network [OSTI]

    Narasayya, Vivek

    , and Niger. Natural resources include natural gas, petroleum, tin, iron ore, coal, limestone, niobium, lead its petroleum-based economy and build a sound foundation for economic growth and political stability

  20. The Saharan Metacraton Mohamed G. Abdelsalam a,*, Jean-Paul Lieegeois b

    E-Print Network [OSTI]

    Stern, Robert J.

    -central part of Africa and extends in the Saharan Desert in Egypt, Libya, Sudan, Chad and Niger of the northern margin of the African continent in southern Egypt and Libya. The term ``metacraton'' refers

  1. Crude oil, conflict and Christian witness in Nigeria: Baptist and Pentecostal perspectives 

    E-Print Network [OSTI]

    Osuigwe, Nkem Emerald

    2010-01-01T23:59:59.000Z

    : to investigate, describe and analyse Christian theological and socio-political consciousness within the context of oil and conflict in the Niger Delta region of Nigeria from Baptist and Pentecostal perspectives; and to use the data to test the veracity...

  2. The first year of the new century marked a new start for the Institut de Recherche pour le Dveloppement. The

    E-Print Network [OSTI]

    or Nouméa, and combines all our concerns and energies. It contributes to team work and the emer- gence Martinique Carribean French Guiana Brazil Peru Chile Bolivia Tunisia EgyptSenzgal Mali Niger Burk

  3. Exploration gaps exist in Nigeria`s prolific delta

    SciTech Connect (OSTI)

    Thomas, D. [Thomas and Associates, Hastings (United Kingdom)

    1995-10-30T23:59:59.000Z

    The Niger delta region of the Republic of Nigeria is Africa`s largest oil producing area. It is clear that Nigeria will continue to contribute significantly to world petroleum production well into the 21st century: with increases in recoverable oil reserves in the Niger delta onshore and offshore; the promising potential of the Niger delta deepwater region; and a lesser but not insignificant contribution from the unexplored onshore Benue trough, part of the mid-African rift system, which has already proved to hold substantial oil reserves in the Doba basin of neighboring Chad. This is the first of five parts on Nigeria`s oil and gas potential. The later articles deal with Niger delta oil reserves and production, Niger delta gas reserves, the delta`s deepwater region, and the Benue trough and onshore cretaceous rift basins. This article deals with the geologic setting of the Niger delta-Benue trough region, the synrift deposits, marine sedimentation, margin evolution, geologic strata and reservoirs, reservoir character, structure and traps, hydrocarbon types, geotemperatures, and source rock quality.

  4. Characterization and Monitoring Data for Evaluating Constructed Emergent Sandbar Habitat in the Missouri River Mainstem 2004-2009

    SciTech Connect (OSTI)

    Duberstein, Corey A.

    2011-04-01T23:59:59.000Z

    The U.S. Army Corps of Engineers (Corps) provides the primary operational management of the Missouri River Main Stem Reservoir System. Management of the Missouri River has generally reduced peak river flows that form and maintain emergent sandbar habitat. Emergent sandbars provide non-vegetated nesting habitat for the endangered interior least tern (Sternula antillarum athalassos) and the threatened Northern Great Plains piping plover (Charadrius melodus). Since 2000, piping plover nesting habitat within the Gavins Point Reach, Garrison Reach, Lake Oahe, and Lake Sakakawea has fledged the majority of piping plovers produced along the Missouri River system. Habitats within Lewis and Clark Lake have also recently become important plover production areas. Mechanical construction of emergent sandbar habitat (ESH) within some of these reaches within the Missouri River began in 2004. Through 2009, 11 sandbar complexes had been constructed (10 in Gavins Point Reach, 1 in Lewis and Clarke Lake) totaling about 543 ac of piping plover and interior least tern nesting habitat. ESH Construction has resulted in a net gain of tern and plover nesting habitat. Both terns and plovers successfully nest and fledge young on constructed sandbars, and constructed habitats were preferred over natural habitats. Natural processes may limit the viability of constructed sandbars as nesting habitat. Continued research is needed to identify if changes in constructed sandbar engineering and management increase the length of time constructed habitats effectively function as nesting habitat. However, the transfer of information from researchers to planners through technical research reports may not be timely enough to effectively foster the feedback mechanisms of an adaptive management strategy.

  5. Riboflavin and deuterium oxide as antemortem/postmortem markers for diseased bovine

    E-Print Network [OSTI]

    Lary, Robert Yale

    1986-01-01T23:59:59.000Z

    injection time and type of light (postmor tern evaluations combined) 29 Comparisons of mean r iboflavin intensity r atings between antemortem injection time under U. V. and visible light (all sites combined) 30 Intensity and sur face area pr obability... levels among independent variables for differences between U. V. and visible light sour ces 34 Comparisons of mean riboflavin intensity ratings between injection sites by type of' light (antemortem injection groups combined) 35 Chi square fr equency...

  6. A,'Scienco Servico Feature Released o n receipt

    E-Print Network [OSTI]

    respoct, quite HOV/OVQr, evan If during a hot wind it shoulr havo a tomperature as high as t h a t over by dayt bocause of fhe'abundanae o f water available f o r evaporation from tho plants, difforent from the temperature. Sanding and dTainine; a cranberry bog greatly hinders the nocturnal f a l l in tern Perature

  7. Cocoanut Meal vs. Cottonseed Meal for Dairy Cows.

    E-Print Network [OSTI]

    Ewing, P. V. (Perry Van); Spence, E.R.

    1918-01-01T23:59:59.000Z

    ....................................................................................................... F. M. LAW. Houston Term expires 1923 MAIN STATION COMMITTEE L. J. HART. Chairman WIU A. MILLER. JR. GOVERNING BOARD, STATE SUBSTATIONS P L DOWNS. Tern le, President....,.Anlmal Husbandman, W. I. HAMPSTON, Inspector Feeding Investr atlons SUBSTATION NO. 1: Beeville. Bee County J. M. JONES. A. 6.. Animal Husbandman, I. E. COWART. M. S.. Superintendent Breeding Inuuir atrons P. p. EWING, f., Animal Husbandman SUBSTATION NO. 2: T...

  8. Energy Conservation Through Utility Systems Transient Response Analysis

    E-Print Network [OSTI]

    Sorotzkin, J.

    1981-01-01T23:59:59.000Z

    -wide utility and energy systems is to issue system design conditions. All steam turbines and other equipment pur chased for the process units must conform to these design parameters. This prevents hydraulic constraints, inter-unit imbalances and venting.... These include variations such as loss of a boiler or loss of a turbine. The equipment performance and control is simulated by providing a subroutine for each equipment item. Some constant flow equipment i terns all use the same subroutine, but all other...

  9. The Application of Integrated Logistic Support Concepts in Energy Project Planning

    E-Print Network [OSTI]

    Meher-Homji, C. B.; Polad, F. S.

    1983-01-01T23:59:59.000Z

    Compressed Air Energy Storage Nuclear Fisioo - LWR, LMFBR Open Cycle MHO Steam Systems Trash Energy Conversion EVALUATION CRITERIA Geothermal: Liquid dominated Vapor Dominated HDR ? Molten Carbonate Fuel Cell Steam System Advanced Steam Sys tern... of the system is evaluated. Each cri terion is assigned a weight (ai)' Parameters (Yk) which are directly measurable from the candidate systems are also analyzed here. Several times ILS considerations enter into criteria definitions. The output...

  10. Industrial-Load-Shaping: The Practice of and Prospects for Utility/Industry Cooperation to Manage Peak Electricity Demand

    E-Print Network [OSTI]

    Bules, D. J.; Rubin, D. E.; Maniates, M. F.

    in programs that influence electric demand in ways that produce desired changes in the pattern and magnitude of a utility's electric load profile. These programs, commonly termed "de mand side management" (DSH) , have a customer orien tation... such a rescheduling. The residential customer class appears least suited to load-shaping efforts. Al though characterized by a relatively low load-profile (high peak-to-average ratio) and consistent electricity consumption pat terns, the timing...

  11. Cubic GaN on Nanopatterned 3C-SiC/Si (001) Substrates

    E-Print Network [OSTI]

    As, Donat Josef

    Chapter 15 Cubic GaN on Nanopatterned 3C-SiC/Si (001) Substrates Ricarda Maria Kemper, Donat Josef relaxed cubic GaN by plasma-assisted molecular beam epitaxy on prepat- terned 3C-SiC/Si (001) substrates) process. We analyze the influence of the substrate on the GaN growth and show that it is possible to grow

  12. EN COTUTELLE INTERNATIONALE Pour obtenir le grade de

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    d'Abdou Moumouni Discipline: Sciences de la Vie Spécialité : Physiologie de la Nutrition Par, Université Abdou Moumouni (Niger), Président M. Marcel CREST Directeur de recherche, CNRS UMR 6150 (France Professeur, INSERM UMR U866 (France), Directeur de thèse M. Hassimi SADOU MCF, Université Abdou Moumouni

  13. TOP-DOWN/BOTTOM-UP APPROACH FOR DEVELOPING SUSTAINABLE DEVELOPMENT INDICATORS FOR MINING

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 TOP-DOWN/BOTTOM-UP APPROACH FOR DEVELOPING SUSTAINABLE DEVELOPMENT INDICATORS FOR MINING: APPLICATION TO THE ARLIT URANIUM MINES (NIGER) A. Chamareta)b) , M. O'Connor a) and G. Récoché b) a indicators for assessing impacts and performances of mining sites thus appears necessary to inform

  14. Organic Acid Production by Filamentous Fungi

    E-Print Network [OSTI]

    -being. Indeed, organic acid fermentations are often not even identified as fungal bioprocesses, having been Aspergillus niger in aerated stirred-tank-reactors can convert glucose to citric acid with greater than 80 lipolytica, and related yeast species, may be in use commercially to produce citric acid (Lopez-Garcia, 2002

  15. Niamey Aerosol Optical Depths

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Flynn, Connor

    MFRSR irradiance data collected during the ACRF AMF deployment in Niamey, Niger have been used to derive AOD for five wavelength channels of the MFRSR. These data have been corrected to adjust for filter drift over the course of the campaign and contamination due to forward scattering as a result of large dust particles in the atmosphere around Niamey.

  16. SUSTAINABILITY AND DEVELOPMENT (An Overview of Nigeria Experience)

    E-Print Network [OSTI]

    Coles, Cynthia

    SUSTAINABILITY AND DEVELOPMENT (An Overview of Nigeria Experience) By Asapo, E. S. (PhD) 20th Development. The Nigeria Experience. Conclusion. #12;Development that meets the needs of present generations, Malawi, Mali, Niger, Nigeria, Uganda, United Republic of Tanzania and Uganda projected to increase

  17. Dying for oil

    SciTech Connect (OSTI)

    Sachs, A.

    1996-05-01T23:59:59.000Z

    This article discusses the fight and execution of Ken Saro-Wiwa, the Ogoni leader who defended his people`s land on the Niger delta against oil development encouraged by the government and persued by the Royal/Dutch Shell Co. Political reprocussions and heightened vigilance of environmental activists are discussed at length.

  18. Urban fox squirrel ecology and management

    E-Print Network [OSTI]

    McCleery, Robert Alan

    2007-09-17T23:59:59.000Z

    I studied the habitat selection, survival, and anti-predator behaviors of the fox squirrel (Siurus niger) across the urban-rural gradient in College Station, Texas. From two years of tracking the radio locations of 82 fox squirrels, my data...

  19. Lithofacies, palynofacies, and sequence stratigraphy of Palaeogene strata in Southeastern Nigeria

    E-Print Network [OSTI]

    Bermingham, Eldredge

    Francisca E. Oboh-Ikuenobe a,*, Chuks G. Obi b , Carlos A. Jaramillo c a Department of Geology and Geophysics, University of Missouri-Rolla, Rolla, MO 65409, USA b Department of Geology, University of Nigeria prospecting for oil and gas in the basin. Abstracts on Niger Delta studies abound in the literature, but only

  20. Stored Grain Department of Entomology

    E-Print Network [OSTI]

    Ginzel, Matthew

    . Lafayette, USA; 2 INRAN, Maradi, Niger; and 3 IITA, Ibadan, Nigeria. Life cycle of the cowpea bruchid (Seck et al., 1996) ­ because insects respire aerobically, i.e., they use oxygen to generate energy from their food. They need energy to grow, develop and reproduce. Feeding and growing larvae burn up the oxygen

  1. CRC handbook of agricultural energy potential of developing countries

    SciTech Connect (OSTI)

    Duke, J.A.

    1986-01-01T23:59:59.000Z

    The contents of this book are: Introduction; Kenya; Korea (Republic of); Lesotho; Liberia; Malagasy; Malawi; Mali; Mauritania; Mexico, Mozambique, Nepal; Nicaragua; Niger; Nigeria; Pakistan; Panama; Paraguay; Peru; Philippines; Rwanda; Senegal; Sierra Leone; Somalia; Sri Lanka; Sudana; Surinam; Swaziland; Tanzania; Thailand; Togo; Uganda; Uruguay; Venezuela; Zaire; Zambia; Appendix I. Conventional and Energetic Yields; Appendix II, Phytomass Files; and References.

  2. NOAA Technical Report NMFS SSRF-732 Assessment of the Northwest

    E-Print Network [OSTI]

    Ig I 'ur ~".l 11\\ 'he Supen t · d.'nt (f DocClrrert l (,oHm e t Pn' tong Of I(e \\\\ Is .., C;P\\'e r imp...· Pnnllf'!! OffIce \\\\ a hlngt In D ( 'NII~ 1i.'i4 An ele( tn( de'ec'n s\\ tern In rpt ~p. r'ld :o.1.if( h 197. II t 7 p.· J fIgs l. table For 1I81e bv the SUP( 'Ite'ldent 01 llocurnent

  3. Nonlinear Schrödinger equation and dissipative quantum dynamics in periodic fields

    E-Print Network [OSTI]

    Chu, Shih-I; Huang, Youhong; Hirschfelder, Joseph O.

    1989-10-15T23:59:59.000Z

    is found to be an attractor and g(t) exhibits a fractal-like evolution pat- tern in the course of time. The structure of the limit cycle depends strongly upon field intensity and frequency as well as the order of nonlinear multiphoton transitions. The power...) The norm of g(t) is conserved even though the system is dissipative, and (b) the following relationship holds true: d(H), = —2k((H ), —(H), ) ~0 . (6)dt Gisin has applied this formalism to spin systems in a magnetic field and to the motion of damped...

  4. Corn Hybrids for Texas. 

    E-Print Network [OSTI]

    Rogers, J. S.; McAfee, T. E.

    1954-01-01T23:59:59.000Z

    Corn Hybrids for Terns ST LOCATIONS AREA I AREA II ARE4 Ill AREA IV 2Prdrie View 7.Tylw lZ.Lockhart 17.Waxahachie 22San Antonio 3.Cleveland 8.Mt. Pbctont I3Brsnha B.Garland 23Lamposas 4.Colbqe Sta. 9Sulphw Spp. 14Holland l9.0reenvilb 24...Stephenville ,J* 5.K'rbyvilb I0.Cbrkdb 15.Tanpk 2ODetiion 25.Wllothe TEXAS AGRICULTURAL EXPERIMENT STATION R. D. LEWIS. DIRECTOR, COLLEGE STATION, TEXAS DIGEST The Texas corn acreage planted to hybrids increased from less than 1 percent of the total acrea...

  5. A statistical analysis of tire tread wear

    E-Print Network [OSTI]

    Sperberg, Ronald Leigh

    1965-01-01T23:59:59.000Z

    positions. Thexe was obvious significant interraction here me the tires change@ ~%tines framn front. to rear wheel positions tbe average ~ wae increased. This test wms assigned . to show. tbe. similax it@ be tween the different veriables. , ln... . this test, the first in , ' . ~etioa peri@4 wms-4ifferemt, from anT. . . of ahe other. yqrixmbx. Peri~ 8, Xy?an@ XV had similar effects on the weax pat- terns as 4M peri~ 2$, 2, ane! Rl. The ~steat simiiari- the 4th, 24th, 8th, 11th, 18th, Mth~ 15th...

  6. Redesign of an isochoric apparatus for P-V-T studies

    E-Print Network [OSTI]

    Johansen, Jared Jon

    2013-02-22T23:59:59.000Z

    der Waals developed the first EOS of consequence in 1873 based upon the hard sphere model of gases. Commercial software packages such as Aspen and Hysis use equations of state extensively for modeling chemical processes. Cubic equations of state... enr oro IN alw114ree Dwr eto olbcnhdo gasket ked due to seal ng p ess s dus plus swat tor s generated by relf. east ng gasket Ih ckmws of asset eats hangs SvcIN4ss ol lnAd Qarrgo Mawmum d~o meal 4 tanya malenal st ope atsrg tern penrture Mswman...

  7. Albabio SL | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEEAisin Seikiand Telephone CoStatutes: TitleAlbaTERN Jump

  8. Albania-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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEEAisin Seikiand Telephone CoStatutes: TitleAlbaTERN

  9. Shelf circulation patterns off Nigeria

    E-Print Network [OSTI]

    Rider, Kelly Elizabeth

    2005-08-29T23:59:59.000Z

    . Because of the limited knowledge of the oceanography of this region, the magnitude and direction of the drift were unexpected, hampering clean up efforts. This lack of information prompted the initiation of a joint industry project (JIP) to gain a... better understanding of the shelf currents offshore Nigeria. The study area defined in the JIP includes the rivers in and near the Niger Delta and the shallow-water region (to approximately 100-m depths) off the coast of Nigeria, roughly extending from...

  10. Abatement Strategies and Disease Assessment for Feral Hogs in East Texas

    E-Print Network [OSTI]

    Sumrall, Samuel Aaron

    2012-07-16T23:59:59.000Z

    to thank Mr. Justin Irek, Ms. Ann Christian, Mr. Fielding Browder, Mr. Gary Coogler, Mr. David Wright, Mr. Keith Andres, Ms. Linda Murphy, and Mr. Cullen Mancuso for providing the access to their private properties in order to conduct the necessary...) and red (Vulpes vulpes) fox, gray (Sciurus carolinensis) and fox (S. 7 niger)squirrels, white-tailed deer (Odocoileus virginianus), mink (Neovision vision), otter (Lontra canadensis), beaver (Castor canadensis), nutria (Myocastor coypus...

  11. Africa: Prosperous times

    SciTech Connect (OSTI)

    NONE

    1996-08-01T23:59:59.000Z

    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.

  12. Sequence stratigraphic framework of Neogene strata in offshore Nigeria

    SciTech Connect (OSTI)

    Pacht, J.A. [Seis Strat Services, Inc., Sugar Land, TX (United States); Bowen, B.E.; Hall, D.J. [Excalibur Consulting, Houston, TX (United States)] [and others

    1996-08-01T23:59:59.000Z

    The western portion of the Nigerian continental margin (Dahomey Basin) exhibits stable to moderately unstable progradation. Systems tracts are similar to those described by Vail for stable progradational margins. In contrast, strata off the central and eastern portions of the Nigerian coast (Niger Delta Complex) exhibit highly unstable progradation, and systems tracts are similar to those in Neogene strata of the offshore Gulf of Mexico. Lowstand basin floor fans in both areas are defined by a well-developed upper reflection. This reflection downlaps along the sequence boundary or abuts against the downthrown side of a growth fault surface. Most lower lowstand (slope fan) strata exhibit discontinuous to semi-continuous subparallel reflections. However, this systems tract also contains channel complexes characterized by chaotic bedding with small bright spots and less common large channels, which exhibit concave-upward reflections. In the western portion of the study area, lower lowstand deposits commonly pinch out on the slope. Deposition occurred largely from point sources. In contrast, contemporaneous shallow-water facies are developed in lower lowstand systems tracts in the Niger Delta Complex. Deposition occurred along a line source. Large amplitude anomalies in the upper lowstand (prograding wedge) suggest well-developed sheet sands occur in shallow-water and deep-water in the Niger Delta complex. However, in the Dahomey Basin there is little evidence of deep-water sands in this interval. The transgressive and highstand systems tracts are usually very thin in outer shelf to basin floor strata in both areas. Both the Dahomey Basin and Niger Delta Complex exhibit different stratigraphic geometries, and therefore, require different exploration strategies.

  13. Mieux nourrir le monde:Mieux nourrir le monde: notre dfi l'internationalnotre dfi l'international

    E-Print Network [OSTI]

    Laval, Université

    Appui institutionnel au centre Ivoirien de recherches économiques et sociales (CIRES) (COTE D'IVOIRE COOP�RATION Amérique du Nord (�tats-Unis, Mexique) Amérique du Sud (Brésil, Nicaragua, Argentine, Uruguay, Mexique, Cuba, Haïti) Afrique (Sénégal, Rwanda, Mali, Côte d'Ivoire, Congo, Niger, Mozambique, Malawi

  14. TYPOLOGIE LINGUISTIQUE ET HISTOIRE DU PEUPLEMENT : LE CAS DES LANGUES GUR DU BURKINA FASO

    E-Print Network [OSTI]

    Boyer, Edmond

    1 TYPOLOGIE LINGUISTIQUE ET HISTOIRE DU PEUPLEMENT : LE CAS DES LANGUES GUR DU BURKINA FASO Alain latitude nord, et du 7° de longitude ouest au 4° de longitude est, sur l'ensemble du Burkina Faso, mais débordant largement sur tous les pays voisins, le Mali, le Niger, la Côte d'Ivoire, le Ghana, le Togo, le

  15. Trans-Sahara pipe line would deliver Nigeria gas to Europe

    SciTech Connect (OSTI)

    Muenzler, M.H.

    1983-11-01T23:59:59.000Z

    Bechtel has made an in-house study of a natural gas transmission line extending from Nigeria to the Mediterranean and then on into Europe. Based upon the analysis, the pipeline project appears sufficiently viable to warrant further study. Perhaps the single most important element in design of pipelines crossing international borders is the political aspects involved in constructing, owning, and operating the line. These considerations not only effect the location of the pipeline, the manner of financing and ownership, but also whether the line will be constructed. The line crosses several international boundaries, depending upon the route selected. Each route crosses Niger. Case A crosses Algeria and into Tunisia where it ultimately would cross the Strait of Sicily into Italy. Case B crosses the Niger- Algerian border and then traverses Algeria to the Mediterranean where it is planned to connect to the Segamo pipeline and to link with the pipeline network in Spain. Case C crosses the countries of Niger, Mali, Mauritania, and into Morocco, and ultimately crosses the Mediterranean Sea close to the Strait of Gibraltar. Nigeria has proven natural gas reserves estimated to range from 2.5 to 4 trillion cu m (38 to 140 tcf).

  16. Council on East Asian Libraries Statistics 2013-2014 For North American Institutions

    E-Print Network [OSTI]

    Doll, Vickie; Liu, Wen-ling

    2015-02-01T23:59:59.000Z

    602 91 3 526 1222 0 0 0 0 0 6 02 91 3 526 1222 26412 5265 3 26194 57874 Ohio State 1 5 4797 1334 5 3 8 5 4 8 0 296798 1293 7803 1 92 0 9288 3 9 3 8 1 5 5 4 1 6 9 0 5 6 6 1 -2645 6249 23 0 3627 152152 139702 8571 0 30 0 425 Or eg on 4 9 5 4 6 42410 2185... 173542 1113 14394 187936 189049 1802 588 203 94 2687 Northwes tern 20050 15683 370 28457 64560 9243 2349 66909 76152 539 142 2 0 683 N otre Dame 19388 4760 790 0 24938 8 0 24938 24946 4000 0 0 0 4000 O berl i n Col l ege 26412 5265 3 26194 57874 5970 1873...

  17. Commercial Feedings Stuffs 1913: Feed Law.

    E-Print Network [OSTI]

    Youngblood, B.

    1914-01-01T23:59:59.000Z

    EBrHdpm MfprEBm rH1Mp AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS . 9 T y L J P n C y h J T y m President Pro Tern. rH1Mp M4dE.fxrfdMx H1nHdEOHBr prMrEAB BOARD OF DIRECTORS Hl Kl . CP9SWam Presidentm Gu... lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllrJyU Jg5SyJP e:e6 STATION STAFF M?OEBEprdMrEAB ?E3EpEAB A, ,HH? .ABrdAx Kl ? uCWa?Luu?m O l plm Director N l xl K uhJRRm State Feed Inspector Ml Kl . uWWJym Kl plm Assistant Director Fl EEl d uaJyPm Deputy Feed Inspector .9TPl Ml , J L? J ym...

  18. Pink Root Disease of Onions and Its Control in Texas.

    E-Print Network [OSTI]

    Taubenhaus, J. J. (Jacob Joseph); Mally, Frederick W. (Frederick William)

    1921-01-01T23:59:59.000Z

    plant growth, and it does not develop pink root where the soil is sterilized with formaldehyde. But in the check poti where the soil was not sterilized, pink root was present on manly of the seedlings. Tliis proved definitelv that the trace of alkali... ~culation cons~sted ~n i ;arlum No. June 15***. ................ ts made in Aug. 10, 2 partly decayed by Aspergil lu s niger, remainder healthy. Figure 2. (a) Green onion sets treated for various lengths of time in formaldehyde solution. (b) Tanks...

  19. On the simulation of enzymatic digest patterns: the fragmentation of oligomeric and polymeric galacturonides by endo-polygalacturonase II

    E-Print Network [OSTI]

    Hunt, J J; Williams, M A K; Hunt, Jonathan J; Cameron, Randall G; Williams, Martin A.K.

    2006-01-01T23:59:59.000Z

    A simulation methodology for predicting the time-course of enzymatic digestions is described. The model is based solely on the enzyme's subsite architecture and concomitant binding energies. This allows subsite binding energies to be used to predict the evolution of the relative amounts of different products during the digestion of arbitrary mixtures of oligomeric or polymeric substrates. The methodology has been specifically demonstrated by studying the fragmentation of a population of oligogalacturonides of varying degrees of polymerization, when digested by endo-polygalacturonase II (endo-PG II) from Aspergillus niger.

  20. Turmoil doesn`t dampen enthusiasm

    SciTech Connect (OSTI)

    NONE

    1997-08-01T23:59:59.000Z

    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.

  1. Now Nigeria looked at fiscal terms, prospects

    SciTech Connect (OSTI)

    Ofurhie, M.A.; Amaechi, M.C.; Idowu, A.O. (Nigerian National Petroleum Corp., Lagos (NG))

    1991-11-25T23:59:59.000Z

    The allocation of funds among investment possibilities must of necessity include evaluation and ranking of alternatives. An essential prerequisite is a geophysical/geological evaluation followed by a reservoir/production analysis resulting in the prediction of recoverable reserves, reservoir performance, optimum method of development, and initial offtake return. An economic model of a typical Niger delta medium cost field with reserves of about 100 million bbl of oil under the royalty/tax system reveals that it is difficult to develop such a field when located offshore. This paper examines case histories involving smaller and larger field developments.

  2. AMMA 2005 Dakar International Conference to be Held November 28-December 2, 2005

    SciTech Connect (OSTI)

    Lamb, Peter

    2006-05-09T23:59:59.000Z

    Consistent with the original proposal (dated April 14, 2005), the grant supported the participation in the above conference of a number of West African meteorologists, the majority of whom will be supporting the ARM Mobile Facility deployment in Niamey in various ways during 2006. The following seven individuals were fully funded (complete airfare, accommodation, registration, meals) to participate in the Conference –Yerima Ladan (Head, ASECNA Forecast Office, Niamey Airport); Dr. Ousmane Manga Adamou (University of Niamey); Abdou Adam Abdoul-Aziz Abebe (Forecasater, ASECNA Forecast Office, Niamey Airport); Hassane Abdou (Forecaster, ASECNA Forecast Office, Niamey Airport); Saley Diori (Forecaster, ASECNA Forecast Office, Niamey Airport); Alhassane Diallo (Meteorological Engineer, Burkina Faso Weather Service). The following three individuals were partly funded (for some of their airfare, accommodation, registration, meals) to participate in the Conference – Katiellou Lawan (International Relations, Niger Weather Service); Mamoutou Kouressy (Institute of Rural Economics, Niger Department of Agriculture); and Francis Dide (Benin Weather Service). I am confident that the participation of the above individuals in the Conference will facilitate both the smooth operation of the ARM Mobile Facility in Niamey during 2006 and the involvement of University of Niamey scientists in analysis of the data collected. We appreciate greatly this support from the ARM Program.

  3. Solar electricity for Africa: The case of Kenya

    SciTech Connect (OSTI)

    Plas, R.J. van der

    1997-12-01T23:59:59.000Z

    This paper presents results of two recent World Bank efforts made in Kenya, Niger, and Cameroon to study the impact of two different renewable projects, one a Micro-Lights program involving about 500 lanterns and the second a survey of 410 households using solar electricity systems. The Micro-Lights program showed that users have distinct preferences in the style of the lamps, that they are willing to spend cash, and that they demand good quality. They may be initially satisfied, but rapidly want more from their purchases. The photoelectric system survey touched less than 1% of such households, and looked at user education, system size, satisfaction, expectations, age of system, appliances, and expectations.

  4. An environmental approach

    SciTech Connect (OSTI)

    Geerling, C.

    1996-11-01T23:59:59.000Z

    The Shell Petroleum Development Company is operating in southern Nigeria in the delta of the Niger River. This delta covers an area 70,000 square kin of coastal ridge barriers, mangroves, freshwater swamp forest and lowland rain forests. Over the past decades considerable changes has occurred through coastal zone modifications, upstream urban and hydrological infrastructure, deforestation, agriculture, fisheries, industrial development, oil operation, as well as demographic changes. The problems associated with these changes are: (1) over-exploitation of renewable natural resources and breakdown of traditional management structures; (2) impact from industry such as pollution and physical changes, and (3) a perception of lack of social and economic equity. This paper describes approaches to help counteract theses problems.

  5. Management of oil pollution of natural resources in Nigeria

    SciTech Connect (OSTI)

    Ikporukpo, C.O.

    1985-04-01T23:59:59.000Z

    Oil spillages are prominent features of petroleum exploitation in Nigeria. For instance, within the decade 1970-1980, the country experienced 18 major spills. Oil pollution adversely affects the water and soil resources of the petroleum-producing Niger Delta. There have been attempts to manage the increasing menace of oil spills, and two strategies may be identified. These are the legislative and the project implementation approaches. The first approach relies on preventative laws, while the second, more or less curative, depends on the implementation of projects for the monitoring, control, and clearance of spilled oil. There are various problems in the effective operation of both strategies, and the persistence of spills, many of them avoidable, tends to indicate lapses in the management attempts. 12 references, 4 tables.

  6. Oyo-first field Deepwater Nigeria?

    SciTech Connect (OSTI)

    Lilletveit, R.; Nelson, L. [The Statoil and BP Alliance, Stavanger (Norway); Osahon, G. [Allied Energy Resources (Nig) Ltd., Lagos (Nigeria)

    1996-08-01T23:59:59.000Z

    The Oyo-1 well was drilled in 3Q95 in OPL 210. The partners in the block are Allied Energy (Operator) and the Statoil and BP Alliance. This well was the first well drilled in Deepwater Nigeria and is a reported hydrocarbon discovery. Although the well was within the Niger Delta depositional system, the deepwater play types drilled were quite different than anything previously tested on the Nigerian shelf or onshore. One year on, some of the questions to be asked are: (1) What did Oyo-1 discover? (2) What has been done to establish the commerciality, or otherwise, of the hydrocarbon pools encountered? (3) What impact does this discovery have on other prospects identified in the deepwater area? The answer to these questions will help to identify whether a new hydrocarbon province in the deepwater Nigeria area can be developed, or not.

  7. - Nord-Maroc (Rif):

    E-Print Network [OSTI]

    A L' evolution Des Occlusives; Dentales Du Proto-berbere; N. Louali; J. M. Hombert; Ayt Youssi; Ayt Mansour

    The purpose of this paper is to establish correspondences between dental stops in seven berber dialects (six from Morocco and one from Algeria). We will be particularly interested in the process of spirantization. The proces, particularly developed in the northern dialects, is starting to affect central dialects as well. we will show that in some dialects (Ayt sadden, Ayt Ouzin and Ayt Mansour) the development of spirantization is phonetically conditioned. 1. Distribution géographique des parlers berbères Le domaine berbère couvre une vaste zone géographique qui s'étend de l'océan Atlantique à la frontière égyptienne et de la Méditerranée jusqu'au fleuve Niger (voir carte 1). Sur cette vaste étendue, les berbérophones ne forment pas une masse compacte; ils se répartissent en îlots d'importance très variable (voir Basset 1952 et

  8. Unagreement is an Illusion. Apparent person mismatches and nominal structure

    E-Print Network [OSTI]

    Höhn, Georg F.K.

    2015-01-01T23:59:59.000Z

    Swahili (Niger-Congo), Georgian (Kartvelian) and Warlpiri (Pama-Nyungan) show. It may be noticed that in contrast to the previous exam- ples there are no overt definite articles involved here, clearly due to the general lack of definite articles... details compare also Haacke (1976). (32) tii kxo`e-ta (I person-1SG+M) ‘*I man’ saa´ kxo`e-ts (you person-2SG+M) ‘*you man’ kxo`e-p (person-3SG+M) ‘the man’ si´? kxo`e-ke (we person-1PL+M) ‘we men’ 16 Georg F.K. Ho¨hn saa´ kxo`e-ko` (you person-2PL+M) ‘you...

  9. Resin-assisted Enrichment of N-terminal Peptides for Characterizing Proteolytic Processing

    SciTech Connect (OSTI)

    Kim, Jong Seo; Dai, Ziyu; Aryal, Uma K.; Moore, Ronald J.; Camp, David G.; Baker, Scott E.; Smith, Richard D.; Qian, Weijun

    2013-06-17T23:59:59.000Z

    Proteolytic processing is a ubiquitous, irreversible posttranslational modification that plays an important role in cellular regulation in all living organisms. Herein we report a resin-assisted positive selection method for specifically enriching protein N-terminal peptides to facilitate the characterization of proteolytic processing events by liquid chromatography-tandem mass spectrometry. In this approach, proteins are initially reduced and alkylated and their lysine residues are converted to homoarginines. Then, protein N-termini are selectively converted to reactive thiol groups. We demonstrate that these sequential reactions were achieved with nearly quantitative efficiencies. Thiol-containing N-terminal peptides are then captured (>98% efficiency) by a thiol-affinity resin, a significant improvement over the traditional avidin/biotin enrichment. Application to cell lysates of Aspergillus niger, a filamentous fungus of interest for biomass degradation, enabled the identification of 1672 unique protein N-termini and proteolytic cleavage sites from 690 unique proteins.

  10. Challenges in Whole-Genome Annotation of Pyrosequenced Eukaryotic Genomes

    SciTech Connect (OSTI)

    Kuo, Alan; Grigoriev, Igor

    2009-04-17T23:59:59.000Z

    Pyrosequencing technologies such as 454/Roche and Solexa/Illumina vastly lower the cost of nucleotide sequencing compared to the traditional Sanger method, and thus promise to greatly expand the number of sequenced eukaryotic genomes. However, the new technologies also bring new challenges such as shorter reads and new kinds and higher rates of sequencing errors, which complicate genome assembly and gene prediction. At JGI we are deploying 454 technology for the sequencing and assembly of ever-larger eukaryotic genomes. Here we describe our first whole-genome annotation of a purely 454-sequenced fungal genome that is larger than a yeast (>30 Mbp). The pezizomycotine (filamentous ascomycote) Aspergillus carbonarius belongs to the Aspergillus section Nigri species complex, members of which are significant as platforms for bioenergy and bioindustrial technology, as members of soil microbial communities and players in the global carbon cycle, and as agricultural toxigens. Application of a modified version of the standard JGI Annotation Pipeline has so far predicted ~;;10k genes. ~;;12percent of these preliminary annotations suffer a potential frameshift error, which is somewhat higher than the ~;;9percent rate in the Sanger-sequenced and conventionally assembled and annotated genome of fellow Aspergillus section Nigri member A. niger. Also,>90percent of A. niger genes have potential homologs in the A. carbonarius preliminary annotation. Weconclude, and with further annotation and comparative analysis expect to confirm, that 454 sequencing strategies provide a promising substrate for annotation of modestly sized eukaryotic genomes. We will also present results of annotation of a number of other pyrosequenced fungal genomes of bioenergy interest.

  11. High Efficiency, Low Cost Solar Cells Manufactured Using 'Silicon Ink' on Thin Crystalline Silicon Wafers

    SciTech Connect (OSTI)

    Antoniadis, H.

    2011-03-01T23:59:59.000Z

    Reported are the development and demonstration of a 17% efficient 25mm x 25mm crystalline Silicon solar cell and a 16% efficient 125mm x 125mm crystalline Silicon solar cell, both produced by Ink-jet printing Silicon Ink on a thin crystalline Silicon wafer. To achieve these objectives, processing approaches were developed to print the Silicon Ink in a predetermined pattern to form a high efficiency selective emitter, remove the solvents in the Silicon Ink and fuse the deposited particle Silicon films. Additionally, standard solar cell manufacturing equipment with slightly modified processes were used to complete the fabrication of the Silicon Ink high efficiency solar cells. Also reported are the development and demonstration of a 18.5% efficient 125mm x 125mm monocrystalline Silicon cell, and a 17% efficient 125mm x 125mm multicrystalline Silicon cell, by utilizing high throughput Ink-jet and screen printing technologies. To achieve these objectives, Innovalight developed new high throughput processing tools to print and fuse both p and n type particle Silicon Inks in a predetermined pat-tern applied either on the front or the back of the cell. Additionally, a customized Ink-jet and screen printing systems, coupled with customized substrate handling solution, customized printing algorithms, and a customized ink drying process, in combination with a purchased turn-key line, were used to complete the high efficiency solar cells. This development work delivered a process capable of high volume producing 18.5% efficient crystalline Silicon solar cells and enabled the Innovalight to commercialize its technology by the summer of 2010.

  12. Characterization and simulation of an exhumed fractured petroleum reservoir. Final report, March 18, 1996--September 30, 1998

    SciTech Connect (OSTI)

    Forster, C.B.; Nielson, D.L.; Deo, M.

    1998-12-01T23:59:59.000Z

    An exhumed fractured reservoir located near Alligator Ridge in central Nevada provides the basis for developing and testing different approaches for simulating fractured petroleum reservoirs. The fractured analog reservoir comprises a 90 m thickness of silty limestone and shaly interbeds within the Devonian Pilot Shale. A period of regional compression followed by ongoing basin and range extension has created faults and fractures that, in tern, have controlled the migration of both oil and gold ore-forming fluids. Open pit gold mines provide access for observing oil seepage, collecting the detailed fracture data needed to map variations in fracture intensity near faults, build discrete fracture network models and create equivalent permeability structures. Fault trace patterns mapped at the ground surface provide a foundation for creating synthetic fault trace maps using a stochastic procedure conditioned by the outcrop data. Conventional simulations of petroleum production from a 900 by 900 m sub-domain within the reservoir analog illustrate the possible influence of faults and fractures on production. The consequences of incorporating the impact of different stress states (e.g., extension, compression or lithostatic) are also explored. Simulating multiphase fluid flow using a discrete fracture, finite element simulator illustrates how faults acting as conduits might be poorly represented by the upscaling procedures used to assign equivalent permeability values within reservoir models. The parallelized reservoir simulators developed during this project provide a vehicle to evaluate when it might be necessary to incorporate very fine scale grid networks in conventional reservoir simulators or to use finely gridded discrete fracture reservoir simulators.

  13. Energy R and D in Japan

    SciTech Connect (OSTI)

    J.J. Dooley

    1999-08-09T23:59:59.000Z

    In 1997, the public and private sectors in Japan invested $90.3 billion in R and D. Japan is the second largest supporter of R and D after the United States. A very large percentage (79.4%) of all R and D in Japan is supported by the private sector. The prolonged economic recession that has plagued the Japanese economy for most of the 1990s has significantly reduced the scale of the Japanese R and D effort compared to what it would have been had the economy been more robust. The Japanese government has recently attempted to bring the economy out of this recession through the use of economic stimulus packages. These stimulus packages have contained significant new funding for R and D, although it is apparent that much of the funding is going to R and D programs and R and D construction projects with very near tern payoff and not to the support of longer term R and D. In 1998, the Japanese government devoted 13.7% of all public R and D funds to the support of energy R and D. The priority accorded to energy R and D in Japan is significantly higher than in any other industrialized nation. The Japanese energy R and D program, which was funded at $2.5 billion in 1997, is overwhelmingly focused on nuclear energy R and D. Nuclear energy R and D (fission and fusion) accounts for 75% of the total national energy R and D budget. The fission energy R and D effort has decreased nearly 24% since 1996 as the government attempts to refocus this program in the face of growing public opposition to the Japanese government's efforts to expand the nuclear power program. Energy efficiency R and D (8% of the total national energy R and D budget) and renewable energy R and D receive relatively modest support from the Japanese government.

  14. Google Earth as a geospatial tool for development organisations: mapping climate change vulnerability 

    E-Print Network [OSTI]

    Crossley, Janet Ruth

    2008-01-01T23:59:59.000Z

    needed to represent the issue of vulnerability, and Google Earth allows for users to explore and understand even more information. This study draws examples from a mapping project of climate change vulnerability in Niger, and discusses the lessons...Geographical Information Systems have not been as successful in the non-governmental humanitarian sector as GIS professionals had hoped. If geospatial tools are to become more widely used and valuable within the humanitarian sector, it is perhaps time for a new approach to be taken. A debate is currently underway about the potential role of Google Earth in emergency relief operations. This research extends the scope of this discussion into the wider development sector, and asks whether Google Earth has the potential to become a useful tool in various aspects of development NGO work. Information management tools need to have wide support within an organisation to be successful, and it seems that many are very interested in what can be done using compromise geospatial/geovisualisation tools such as Google Earth. However there is also scepticism about its usefulness. This research suggests practical applications and recommendations for good use so that actors within the development sector can take the research further....

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

    SciTech Connect (OSTI)

    Brown, S.

    2002-04-16T23:59:59.000Z

    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.

  16. High-potential geothermal energy resource areas of Nigeria and their geologic and geophysical assessment

    SciTech Connect (OSTI)

    Babalola, O.O.

    1984-04-01T23:59:59.000Z

    The widespread occurrence of geothermal manifestations in Nigeria is significant because the wide applicability and relative ease of exploitation of geothermal energy is of vital importance to an industrializing nation like Nigeria. There are two known geothermal resource areas (KGRAs) in Nigeria: the Ikogosi Warm Springs of Ondo State and the Wikki Warm Springs of Bauchi State. These surficial effusions result from the circulation of water to great depths through faults in the basement complex rocks of the area. Within sedimentary areas, high geothermal gradient trends are identified in the Lagos subbasin, the Okitipupa ridge, the Auchi-Agbede are of the Benin flank/hinge line, and the Abakaliki anticlinorium. The deeper Cretaceous and Tertiary sequences of the Niger delta are geopressured geothermal horizons. In the Benue foldbelt, extending from the Abalaliki anticlinorium to the Keana anticline and the Zambuk ridge, several magmatic intrusions emplaced during the Late Cretaceous line the axis of the Benue trough. Positive Bouguer gravity anomalies also parallel this trough and are interpreted to indicate shallow mantle. Parts of this belt and the Ikom, the Jos plateau, Bauchi plateau, and the Adamawa areas, experienced Cenozoic volcanism and magmatism.

  17. Enigmatic compressional structures in an extensional province: Eku field, OML 67, offshore Nigeria

    SciTech Connect (OSTI)

    Quinones, M.; Evans, R. [Mobil Technology Co., Dallas, TX (United States); Alofe, K.; Onyeise, B. [Mobil Producing Nigeria, Lagos (Nigeria)

    1996-12-31T23:59:59.000Z

    Acquisition of 3-D seismic data over OML 67-70 and a detailed reservoir description study done on the Eku field, have allowed identification of previously unrecognized compressional features. Situated within a depocenter between arcuate normal growth faults, the Eku structure consists of a shale-cored anticlinal fold and fold-and-thrust separated by a zone of lateral displacement. The crests of the folds have been eroded at a major unconformity at the base of the Qua Iboe shale (Early Pliocene). In the absence of definitive biostratigraphic data, correlations among the various fault-blocks are based on the character of sedimentary packages and sequences on wireline logs. Combined with analysis of the geometry of faults and folds, the correlations support a description of pulsatory movement of folding and faulting, that ultimately culminated in extensional reactivation of earlier regional extension and the not coincident. The effect of the anticipated reservoir sections, and deformation, both compressional, was gravity-driven and on shale detachments. A working hypothesis to explain the disparity in direction of earlier extension and subsequent compression is that thermal expansion that accompanied formation of the Cameroon volcanic line to the east of the Niger Delta in Miocene time, caused a change in the direction of structuring, allowing downslope gravity-driven compression to be superimposed on pre-existing extensional features.

  18. Enigmatic compressional structures in an extensional province: Eku field, OML 67, offshore Nigeria

    SciTech Connect (OSTI)

    Quinones, M.; Evans, R. (Mobil Technology Co., Dallas, TX (United States)); Alofe, K.; Onyeise, B. (Mobil Producing Nigeria, Lagos (Nigeria))

    1996-01-01T23:59:59.000Z

    Acquisition of 3-D seismic data over OML 67-70 and a detailed reservoir description study done on the Eku field, have allowed identification of previously unrecognized compressional features. Situated within a depocenter between arcuate normal growth faults, the Eku structure consists of a shale-cored anticlinal fold and fold-and-thrust separated by a zone of lateral displacement. The crests of the folds have been eroded at a major unconformity at the base of the Qua Iboe shale (Early Pliocene). In the absence of definitive biostratigraphic data, correlations among the various fault-blocks are based on the character of sedimentary packages and sequences on wireline logs. Combined with analysis of the geometry of faults and folds, the correlations support a description of pulsatory movement of folding and faulting, that ultimately culminated in extensional reactivation of earlier regional extension and the not coincident. The effect of the anticipated reservoir sections, and deformation, both compressional, was gravity-driven and on shale detachments. A working hypothesis to explain the disparity in direction of earlier extension and subsequent compression is that thermal expansion that accompanied formation of the Cameroon volcanic line to the east of the Niger Delta in Miocene time, caused a change in the direction of structuring, allowing downslope gravity-driven compression to be superimposed on pre-existing extensional features.

  19. The application of seismic stratigraphic methods on exploration 3D seismic data to define a reservoir model in OPL 210, Deepwater Nigeria

    SciTech Connect (OSTI)

    Ragnhild, L.; Ventris, P. [Statoil and BP Alliance, Stavanger (Norway); Osahon, G. [Allied Energy Resources (Nig) Ltd., Lagos (Nigeria)

    1995-08-01T23:59:59.000Z

    OPL 210 lies in deepwater on the northwestern flank of the Niger Delta. The partners in this block are Allied Energy and The Statoil and BP Alliance. The license has a 5 year initial exploration phase and carries a 2 well commitment. At present the database comprises a 1 x 1 km grid of 2D seismic across the block, and 450 sq. km of 3D in an area of special interest. A larger 3D survey is planned for 1995. Little is known about the reservoir in the deep water, but we expect our main target to be ponded slope and basin turbidites. As such the bulk of the shelf well data available has little or no relevance to the play type likely to be encountered. Prior to drilling, seismic stratigraphy has been one of several methods used to generate a consistent predictive reservoir model. The excellent quality and high resolution of the 3D data have allowed identification and detailed description of several distinctive seismic facies. These facies are described in terms of their internal geometries and stacking patterns. The geometries are then interpreted based on a knowledge of depositional processes from analog slope settings. This enables a predictive model to be constructed for the distribution of reservoir within the observed facies. These predictions will be tested by one of the first wells drilled in the Nigerian deepwater in mid 1995.

  20. Ethnicity, petroeconomy, and national integration in Nigeria

    SciTech Connect (OSTI)

    Yeri-Obidake, E.Z.

    1985-01-01T23:59:59.000Z

    Among several related phenomena, this study presents as its focal points the examination of some of the variables that influence and shape the structure of sociopolitical, cultural and socioeconomic relations in the course of national integration in Nigeria. The exploitation of petroleum resources since 1958 in the Niger Delta has largely influenced the course of the political as well as the socioeconomic development of Nigeria. Due to its rich petroleum resources, the Rivers territory ranked high in the political calculus of both the Federal Government and secessionist Biafra. The central thesis of this study is that oil is the single glue that has held the Federation of Nigeria together in the last two decades, and prevented it from being balkanized. This study attempts to put into perspective the various eruptions and episodes of secessionist tendencies and agitations in Nigeria. The ebb and flow of separatist agitations seem to reflect the changing geoeconomic, socioeconomic, and sociopolitical environment of the country. Should the petroeconomy collapse, and/or oil losses its significance in the international economy, what will happen to Nigeria as a nation. The present study points up the need to develop other sources of economic interdependence via the proper utilization of the enormous oil revenues before it is written off as a lost opportunity.

  1. Mercury concentrations in Maine sport fishes

    SciTech Connect (OSTI)

    Stafford, C.P. [Univ. of Maine, Orono, ME (United States)] [Univ. of Maine, Orono, ME (United States); Haines, T.A. [Geological Survey, Orono, ME (United States)] [Geological Survey, Orono, ME (United States)

    1997-01-01T23:59:59.000Z

    To assess mercury contamination of fish in Maine, fish were collected from 120 randomly selected lakes. The collection goal for each lake was five fish of the single most common sport fish species within the size range commonly harvested by anglers. Skinless, boneless fillets of fish from each lake were composited, homogenized, and analyzed for total mercury. The two most abundant species, brook trout Salvelinus fontinalis and smallmouth bass Micropterus dolomieu, were also analyzed individually. The composite fish analyses indicate high concentrations of mercury, particularly in large and long-lived nonsalmonid species. Chain pickerel Esox niger, smallmouth bass, largemouth bass Micropterus salmoides, and white perch Morone americana had the highest average mercury concentrations, and brook trout and yellow perch Perca flavescens had the lowest. The mean species composite mercury concentration was positively correlated with a factor incorporating the average size and age of the fish. Lakes containing fish with high mercury concentrations were not clustered near known industrial or population centers but were commonest in the area within 150 km of the seacoast, reflecting the geographical distribution of species that contained higher mercury concentrations. Stocked and wild brook trout were not different in length or weight, but wild fish were older and had higher mercury concentrations. Fish populations maintained by frequent introductions of hatchery-produced fish and subject to high angler exploitation rates may consist of younger fish with lower exposure to environmental mercury and thus contain lower concentrations than wild populations.

  2. Sequencing the Black Aspergilli species complex

    SciTech Connect (OSTI)

    Kuo, Alan; Salamov, Asaf; Zhou, Kemin; Otillar, Robert; Baker, Scott; Grigoriev, Igor

    2011-03-11T23:59:59.000Z

    The ~15 members of the Aspergillus section Nigri species complex (the "Black Aspergilli") are significant as platforms for bioenergy and bioindustrial technology, as members of soil microbial communities and players in the global carbon cycle, and as food processing and spoilage agents and agricultural toxigens. Despite their utility and ubiquity, the morphological and metabolic distinctiveness of the complex's members, and thus their taxonomy, is poorly defined. We are using short read pyrosequencing technology (Roche/454 and Illumina/Solexa) to rapidly scale up genomic and transcriptomic analysis of this species complex. To date we predict 11197 genes in Aspergillus niger, 11624 genes in A. carbonarius, and 10845 genes in A. aculeatus. A. aculeatus is our most recent genome, and was assembled primarily from 454-sequenced reads and annotated with the aid of >2 million 454 ESTs and >300 million Solexa ESTs. To most effectively deploy these very large numbers of ESTs we developed 2 novel methods for clustering the ESTs into assemblies. We have also developed a pipeline to propose orthologies and paralogies among genes in the species complex. In the near future we will apply these methods to additional species of Black Aspergilli that are currently in our sequencing pipeline.

  3. Generation of transgenic wheat (Triticum aestivum L.) accumulating heterologous endo-xylanase or ferulic acid esterase in the endosperm

    SciTech Connect (OSTI)

    Harholt, Jesper; Bach, Inga C; Lind-Bouquin, Solveig; Nunan, Kylie J.; Madrid, Susan M.; Brinch-Pedersen, Henrik; Holm, Preben B.; Scheller, Henrik V.

    2009-12-08T23:59:59.000Z

    Endo-xylanase (from Bacillus subtilis) or ferulic acid esterase (from Aspergillus niger) were expressed in wheat under the control of the endosperm specific 1DX5 glutenin promoter. Constructs both with and without the endoplasmic reticulum retention signal KDEL were used. Transgenic plants were recovered in all four cases but no qualitative differences could be observed whether KDEL was added or not. Endo-xylanase activity in transgenic grains was increased between two and three fold relative to wild type. The grains were shriveled and had a 25-33% decrease in mass. Extensive analysis of the cell walls showed a 10-15% increase in arabinose to xylose ratio, a 50% increase in the proportion of water extractable arabinoxylan, and a shift in the MW of the water extractable arabinoxylan from being mainly larger than 85 kD to being between 2 kD and 85 kD. Ferulic acid esterase expressing grains were also shriveled and the seed weight was decreased by 20-50%. No ferulic acid esterase activity could be detected in wild type grains whereas ferulic acid esterase activity was detected in transgenic lines. The grain cell walls had 15-40% increase in water unextractable arabinoxylan and a decrease in monomeric ferulic acid between 13 and 34%. In all the plants the observed changes are consistent with a plant response that serves to minimize the effect of the heterologously expressed enzymes by increasing arabinoxylan biosynthesis and cross-linking.

  4. Atmospheric Properties from the 2006 Niamey Deployment and Climate Simulation with a Geodesic Grid Coupled Climate Model Fourth Quarter 2008

    SciTech Connect (OSTI)

    JH Mather; DA Randall; CJ Flynn

    2008-09-30T23:59:59.000Z

    In 2008, the Atmospheric Radiation Measurement (ARM) Program and the Climate Change Prediction Program (CCPP) have been asked to produce joint science metrics. For CCPP, the metrics will deal with a decade-long control simulation using geodesic grid-coupled climate model. For ARM, the metrics will deal with observations associated with the 2006 deployment of the ARM Mobile Facility (AMF) to Niamey, Niger. Specifically, ARM has been asked to deliver data products for Niamey that describe cloud, aerosol, and dust properties. The first quarter milestone was the initial formulation of the algorithm for retrieval of these properties. The second quarter milestone included the time series of ARM-retrieved cloud properties and a year-long CCPP control simulation. The third quarter milestone included the time series of ARM-retrieved aerosol optical depth and a three-year CCPP control simulation. This final fourth quarter milestone includes the time-series of aerosol and dust properties and a decade-long CCPP control simulation.

  5. Characterization of Vertical Velocity and Drop Size Distribution Parameters in Widespread Precipitation at ARM Facilities

    SciTech Connect (OSTI)

    Giangrande S. E.; Luke, E. P.; Kollias, P.

    2012-02-01T23:59:59.000Z

    Extended, high-resolution measurements of vertical air motion and median volume drop diameter D0 in widespread precipitation from three diverse Atmospheric Radiation Measurement Program (ARM) locations [Lamont, Oklahoma, Southern Great Plains site (SGP); Niamey, Niger; and Black Forest, Germany] are presented. The analysis indicates a weak (0-10 cm{sup -1}) downward air motion beneath the melting layer for all three regions, a magnitude that is to within the typical uncertainty of the retrieval methods. On average, the hourly estimated standard deviation of the vertical air motion is 0.25 m s{sup -1} with no pronounced vertical structure. Profiles of D0 vary according to region and rainfall rate. The standard deviation of 1-min-averaged D0 profiles for isolated rainfall rate intervals is 0.3-0.4 mm. Additional insights into the form of the raindrop size distribution are provided using available dual-frequency Doppler velocity observations at SGP. The analysis suggests that gamma functions better explain paired velocity observations and radar retrievals for the Oklahoma dataset. This study will be useful in assessing uncertainties introduced in the measurement of precipitation parameters from ground-based and spaceborne remote sensors that are due to small-scale variability.

  6. Comparison of Simulated and Observed Continental Tropical Anvil Clouds and Their Radiative Heating Profiles

    SciTech Connect (OSTI)

    Powell, Scott W.; Houze, R.; Kumar, Anil; McFarlane, Sally A.

    2012-09-06T23:59:59.000Z

    Vertically pointing millimeter-wavelength radar observations of anvil clouds extending from mesoscale convective systems (MCSs) that pass over an Atmospheric Radiation Measurement Program (ARM) field site in Niamey, Niger, are compared to anvil structures generated by the Weather Research and Forecasting (WRF) mesoscale model using six different microphysical schemes. The radar data provide the statistical distribution of the radar reflectivity values as a function of height and anvil thickness. These statistics are compared to the statistics of the modeled anvil cloud reflectivity at all altitudes. Requiring the model to be statistically accurate at all altitudes is a stringent test of the model performance. The typical vertical profile of radiative heating in the anvil clouds is computed from the radar observations. Variability of anvil structures from the different microphysical schemes provides an estimate of the inherent uncertainty in anvil radiative heating profiles. All schemes underestimate the optical thickness of thin anvils and cirrus, resulting in a bias of excessive net anvil heating in all of the simulations.

  7. HERS experiment cause for confidence.

    SciTech Connect (OSTI)

    Cavallo, J. D.; Energy Systems

    1999-09-01T23:59:59.000Z

    At last April's Affordable Comfort conference, I conducted a small HERS (home energy ratings) experiment to examine the relative variability of ratings in new and older homes. The experiment grew out of discussions with Oak Ridge National Laboratory Senior Researcher Mark Ternes and EPA Energy Specialist Mia South about how good the HERS tools currently employed in the new homes market are at identifying cost-effective conservation measures in existing homes. Older homes present challenges for raters that may not generally exist in new construction. These include the absence of blueprints, the inability to interview the builder, the difficulty of identifying the operating efficiency of installed equipment, and different envelope characteristics within the home caused by partial remodels over the years. For precisely these reasons, the need for accurate ratings of older homes is acute. The efficacy of ratings in existing homes hinges on two questions: How accurate are the ratings in existing homes? and, How much does accuracy matter to the selection of conservation measures? A small experiment was organized to test the variability of ratings. Two homes were chosen to represent the very broad spectra that raters can find in the new-construction and existing-home housing stock. The new home in Park Ridge, Illinois, is typical in size and layout of the homes being built in the suburbs around Chicago. This four-bedroom, two-story house with finished basement measures slightly more than 4,000 ft{sup 2}, including the basement. The older home is located in Elgin, Illinois, and was built before 1940, probably sometime in the '20s or '30s. This two-bedroom house has a basement in which the furnace, water heater, clothes washer, and dryer are located. The raters disagreed as to whether the basement should be considered part of the conditioned space. Excluding the basement area, the house measurement approximately 1,000 ft{sup 2}. The rating process included a site visit to measure the homes features, inspection of the blueprints for the new home (none existed for the Elgin home), and a blower door test. After the raters completed their analysis, I examined the effect that the variability of ratings for the Elgin home had on choices for energy conservation measures. Although the sample was small, the results of this experiment are valuable. They may be summarized as follows: First, the ratings that different analysts estimated varied more widely for the older home than they did for the new home. Second, for the older home, the identification of cost-effective energy conservation measures was insensitive to the variation in ratings. Clearly, these findings need to be verified in further experiments. But it is noteworthy that the separate ratings of the new home were in such good agreement, and that cost-effective efficiency recommendations can be arrived at even when divergences exist in the absolute rating value. These findings also suggest that it is appropriate to have confidence in ratings as a tool for identifying cost-effective energy measures in older housing stock.

  8. Partitioned Waveform Inversion Applied to Eurasia and Northern Africa

    SciTech Connect (OSTI)

    bedle, H; Matzel, E; Flanagan, M

    2006-07-27T23:59:59.000Z

    This report summarizes the data analysis achieved during Heather Bedle's eleven-week Technical Scholar internship at Lawrence Livermore National Labs during the early summer 2006. The work completed during this internship resulted in constraints on the crustal and upper mantle S-velocity structure in Northern Africa, the Mediterranean, the Middle East, and Europe, through the fitting of regional waveform data. This data extends current raypath coverage and will be included in a joint inversion along with data from surface wave group velocity measurements, S and P teleseismic arrival time data, and receiver function data to create an improved velocity model of the upper mantle in this region. The tectonic structure of the North African/Mediterranean/Europe/Middle Eastern study region is extremely heterogeneous. This region consists of, among others, stable cratons and platforms such as the West Africa Craton, and Baltica in Northern Europe; oceanic subduction zones throughout the Mediterranean Sea where the African and Eurasian plate collide; regions of continental collision as the Arabian Plate moves northward into the Turkish Plate; and rifting in the Red Sea, separating the Arabian and Nubian shields. With such diverse tectonic structures, many of the waveforms were difficult to fit. This is not unexpected as the waveforms are fit using an averaged structure. In many cases the raypaths encounter several tectonic features, complicating the waveform, and making it hard for the software to converge on a 1D average structure. Overall, the quality of the waveform data was average, with roughly 30% of the waveforms being discarded due to excessive noise that interfered with the frequency ranges of interest. An inversion for the 3D S-velocity structure of this region was also performed following the methodology of Partitioned Waveform Inversion (Nolet, 1990; Van der Lee and Nolet, 1997). The addition of the newly fit waveforms drastically extends the range of the model. The model now extends as far east in Africa to cover Chad and Niger, and reaches south to cover Zambia. The model is also stretched eastward to cover the eastern half of India, and northward to cover the southern portion of Scandinavia.

  9. Identification and characterization of the polyketide synthase involved in ochratoxin A biosynthesis in Aspergillus carbonarius

    SciTech Connect (OSTI)

    Gallo, Antonia; Knox, Benjamin P.; Bruno, Kenneth S.; Solfrizzo, Michele; Baker, Scott E.; Perrone, Giancarlo

    2014-06-02T23:59:59.000Z

    Ochratoxin A (OTA) is a potent mycotoxin produced by Aspergillus and Penicillium species and is a common contaminant of a wide variety of food commodities, with Aspergillus carbonarius being the main producer of OTA contamination in grapes and wine. The molecular structure of OTA is composed of a dihydroisocoumarin ring linked to phenylalanine and, as shown in different producing fungal species, a polyketide synthase (PKS) is a component of the OTA biosynthetic pathway. Similar to observations in other filamentous ascomycetes, the genome sequence of A. carbonarius contains a large number of genes predicted to encode PKSs. In this work a pks gene identified within the putative OTA cluster of A. carbonarius, designated as AcOTApks, was inactivated and the resulting mutant strain was unable to produce OTA, confirming the role of AcOTApks in this biosynthetic pathway. AcOTApks protein is characteristic of the highly reduced (HR)-PKS family, and also contains a putative methyltransferase domain likely responsible for the addition of the methyl group to the OTA polyketide structure. AcOTApks is different from the ACpks protein that we previously described which showed an expression profile compatible with OTA production. We performed phylogenetic analyses of the ?-ketosynthase and acyl-transferase domains of the OTA PKSs which had been identified and characterized in different OTA producing fungal species. The phylogenetic results were similar for both the two domains analyzed and showed that OTA PKS of A. carbonarius, Aspergillus niger, and Aspergillus ochraceus clustered in a monophyletic group with 100% bootstrap support suggesting a common origin, while the other OTA PKSs analyzed were phylogenetically distant. A qRT-PCR assay monitored AcOTApks expression during fungal growth and concomitant production of OTA by A. carbonarius in synthetic grape medium. A clear correlation between the expression profile of AcOTApks and kinetics of OTA production was observed with AcOTApks which reached its maximum level of transcription before OTA accumulation in mycelium reached its highest level, confirming the fact that gene transcription always precedes phenotypic production.