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Identification of pmt, tr1, and h6h Gene Polymorphism and Tropane Alkaloid Chemotypes in Hyoscyamus Niger L. (black henbane)
tropane alkaloids hyoscyamine 6B-hydroxyalse Hyoscyamus niger breeding genetics
2014/11/17
Identification of pmt, tr1, and h6h Gene Polymorphism and Tropane Alkaloid Chemotypes in Hyoscyamus Niger L. (black henbane).
Integration of Well Logs and Seismic Data for Prospects Evaluation of an X Field, Onshore Niger Delta, Nigeria
Seismic Data Well Logs Prospect Niger Delta
2013/3/11
Hydrocarbon reservoir beds have been delineated using direct hydrocarbon indicator on seismic sections as well as well logs data in X field, Onshore Niger Delta. The research methodology involved hori...
Sequence Stratigraphic Analysis of “XB Field”, Central Swamp Depobelt, Niger Delta Basin, Southern Nigeria
Sequence Stratigraphy Unconformities Progradation
2013/3/7
Well logs and biostratigraphic data from six wells in the “XB Field”, central Swamp Depobelt, Niger Delta were integrated to carry out a sequence stratigraphic analysis of depositional systems in the ...
Porosity and Lithology Prediction in Eve Field, Niger Delta Using Compaction Curves and Rock Physics Models
Compaction Trend Lithology Porosity Reservoir Characteristic
2013/3/7
The primary objective of this study is to investigate the porosity-depth trends of shales and sands and how they affect lithologies. Compaction curves from well logs of five wells were determined usin...
Hydrocarbon Volumetric Analysis Using Seismic and Borehole Data over Umoru Field, Niger Delta-Nigeria
Hydrocarbon Reservoir Bright and Dim Spots Well-to-Seismic
2013/3/6
Wireline signatures were used to identify hydrocarbon bearing sands and evaluate Petrophysical parameters for hydrocarbon pore volume determination. Well to seismic tie revealed that these reservoirs ...
BACTERIOLOGICAL PROPERTIES OF GROUNDWATER IN PARTS OF NIGER STATE, NIGERIA
GROUNDWATER NIGER STATE BACTERIOLOGICAL
2009/10/19
Bacteriological analysis of groundwater from newly drilled boreholes in hospital environments in towns and villages in central Nigeria, has revealed that groundwater can be contaminated by microorgani...
RETURN PERIOD ANALYSIS AS A TOOL FOR URBAN FLOOD PREDICTION IN THE NIGER DELTA: A CASE STUDY OF PORT HARCOURT CITY, NIGERIA
return period analysis urban areas flood prediction
2009/10/12
The study examined return period analysis as a tool for flood prediction in urban areas. This technique enables us to know when an event is expected to occur, be equaled, or be exceeded. When floods o...
Size resolved dust emission fluxes measured in Niger during 3 dust storms of the AMMA experiment
dust emission fluxes Niger AMMA experiment
2009/6/16
During the 2006 and 2007 special observing periods of the African Monsoon Multidisciplinary Analysis campaign an original experimental system has been implemented in Banizoumbou (Niger) for measuring ...
Long term precipitation chemistry and wet deposition in a remote dry savanna site in Africa （Niger）
precipitation chemistry wet deposition remote dry savanna site Africa
2009/3/13
Long-term precipitation chemistry have been recorded in the rural area of Banizoumbou (Niger), representative of a semi-arid savanna ecosystem. A total of 305 rainfall samples ~90% of the total annual...
天仙子(Hyoscyamus niger)花粉的胚胎发生与器官发生
胚状体 形态发生 天仙子
2009/2/10
天仙子(Hyoscyamus niger)花粉的胚胎发生与器官发生。
黑曲霉(Aspergillus niger)β-D-葡萄糖苷酶的纯化及其性质
黑曲霉 β-D-葡萄糖苷酶
2007/12/21
摘要 利用垂直板凝胶制备电泳从黑曲霉(Aspergillus niger,AS 3.316)中分离提纯了β-D-葡萄糖苷酶(EC3.2.1.21),经凝胶电泳鉴定为单一带。酶作用的最适pH为4.4,在pH4.0—6.2稳定;最适温度65℃,热稳定性较好,于60℃保温4小时,活力保留80％。此酶作用于纤维二糖的Km值为6.09mM。聚丙烯酰胺薄层等电聚焦测得其pI值为5.5;用SDS凝胶电泳测得其分...
摘要应用启动子筛选载体(Promoter-trap vector) pLX2A构建了1个黑曲霉(Aspergillus niger)基因组文库。这个载体含有1个潮霉素B(Hy)磷酸转移酶编码基因(hph)，它能以启动子活性选择DNA片段。用这个基因组文库转化大肠杆菌，获得了80 000转化子菌落，其中94%含有插入片段。用这个基因库的质粒DNA转化黑曲霉，产生了53个抗潮霉素B(HyR)菌落。21...
Floral Biology, Breeding System, and Pollination Ecology of Cucurbita moschata (Duch. ex Lam) Duch. ex Poir. Varieties (Cucurbitaceae) from Parts of the Niger Delta, Nigeria
Breeding system Cucurbita moschata Cucurbitaceae floral biology Nigeria pollination
2010/3/18
Flowering, breeding mechanisms, and pollination biology of Cucurbita moschata (Duch. ex Lam) Duch. ex Poir. varieties were studied. C. moschata carries male and female flowers on the same plant and is...
Effects of Sucrose Concentration during Citric Acid Accumulation by Aspergillus niger
Aspergillus niger citric acid accumulation osmotic stress phosphotyrosine signal transduction
2010/4/21
A number of regulatory mechanisms are involved in increasing citric acid production under certain conditions. The accumulation of citric acid takes place under the high concentration of carbon sources...
Pressure-Temperature-Composition of Illite/Smectite Mixed-Layer Minerals: Niger Delta Mudstones and other Examples
Diagenesis Geothermal gradient Illite/smectite Ordering Smectite
2012/1/12
X-ray powder diffraction (XRD) studies of the clay fraction of Upper Cretaceous mudstones from a shallow (2.5 km) drill hole in the Niger delta indicate a high geothermal gradient (about 100亱C/km) dur...