Academic literature on the topic 'Gambier Basin'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Gambier Basin.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Gambier Basin"
1
Pollock, R. M., Q. Li, B. McGowran, and S. C. Lang. "OLIGO-MIOCENE CANYONS IN THE GAMBIER SUB-BASIN, SOUTHERN AUSTRALIA—DEEPWATER ANALOGUES FOR PETROLEUM EXPLORATION." APPEA Journal 42, no. 1 (2002): 311. http://dx.doi.org/10.1071/aj01017.
Full textAbstract:
The Gambier Sub-basin lies on the southern Australian passive continental margin that formed during continental breakup and seafloor spreading between the Australian and Antarctic plates. In addition to the numerous modern submarine canyons reported on the southern Australian margin, three palaeo-canyon systems have been identified within the Gambier Limestone of the South Australian Gambier Sub-basin. Favourable environmental conditions during the Oligocene and Early Miocene led to deposition of the Gambier Limestone, a widespread, prograding extra-tropical carbonate platform. A world-wide glacio-eustatic sea level fall in the Early Oligocene exposed the shelf in the Gambier Subbasin, causing widespread erosion and minor fluvial incision on the shelf and subsequent formation of nick points at the shelf edge. During the following marine transgression later in the Oligocene, the shelf was inundated and the nick points provided conduits for erosive turbidity currents to enlarge the canyons to the spectacular dimensions observed on seismic data. No less than 20 successive canyon cut and fill events ranging from Late Oligocene to Middle Miocene have been observed and mapped on seismic data across the shelf in the Gambier Sub-basin. The thick, dominantly fine-grained carbonate sheet logically represents a potential regional seal to underlying clastic reservoirs. However, the possibility exists for carbonate reservoir sands to be present within the palaeo-canyons, sealed by surrounding fine-grained carbonates. Although no hydrocarbons have yet been identified in the carbonates of the Gambier Sub-basin, the canyons provide an analogue useful for establishing the scale, internal architecture and geometry of canyon fill systems.
2
Mitchell, Melinda M., Kevin C. Hill, and David A. Foster. "The thermal history of the gambier embayment, Western Otway basin, Australia, from apatite fission track analysis." Nuclear Tracks and Radiation Measurements 21, no. 4 (October 1993): 621. http://dx.doi.org/10.1016/1359-0189(93)90276-f.
Full text
3
Love, A. J., A. L. Herczeg, D. Armstrong, F. Stadter, and E. Mazor. "Groundwater flow regime within the Gambier Embayment of the Otway Basin, Australia: evidence from hydraulics and hydrochemistry." Journal of Hydrology 143, no. 3-4 (March 1993): 297–338. http://dx.doi.org/10.1016/0022-1694(93)90197-h.
Full text
4
Mehin, K., and A. G. Link. "KITCHENS, KETTLES AND CUPS OF HYDROCARBONS, VICTORIAN OTWAY BASIN." APPEA Journal 37, no. 1 (1997): 285. http://dx.doi.org/10.1071/aj96018.
Full textAbstract:
Evaluation of Early Cretaceous source rocks within the onshore Victoria Otway Basin has revealed that thick, mature shales containing predominantly gas-prone and in local concentrations, oil-prone macerals exist northwest of Portland, in the Tyrendarra Embayment, and around the Port Campbell region.Current results of Rock-Eval, bulk composition, gas chromatography, and biomarker analyses, coupled with geohistory and hydrocarbon generation interpretations, indicate that at least three phases of oil generation and expulsion occurred within the basin. The earliest phase, which coincided with the maximum heatflow in the crust around 100 Ma, resulted in the charging of the existing stratigraphic/shoestring traps of the basin. The second and third phases occurred in the eastern end of the basin at around 85 and 60 Ma. There is also evidence to suggest that structural traps of the eastern areas were formed later, during Oligocene time, and that these traps are probably still receiving late-stage charges of hydrocarbons.Although the sparse well density in the basin has resulted in limited, non-uniforin sampling opportunities, several regions with good Early Cretaceous source rocks can be recognised. Some of these good source rock areas are in close proximity to the several known hydrocarbon shows and producing fields. These current studies, which also include a source rock risk analysis indicating source rock adequacy, show that locations for future exploration could include the Casterton-Portland-Mt Gambier western region, the Peterborough-Port Campbell eastern region, and the prospective close peripheries and offshore extensions of these regions.
5
Umhoefer, Paul J., Paul Schiarizza, and Matt Robinson. "Relay Mountain Group, TyaughtonMethow basin, southwest British Columbia: a major Middle Jurassic to Early Cretaceous terrane overlap assemblage." Canadian Journal of Earth Sciences 39, no. 7 (July 1, 2002): 1143–67. http://dx.doi.org/10.1139/e02-031.
Full textAbstract:
The upper Middle Jurassic to Lower Cretaceous Relay Mountain Group is the lower part of the northern TyaughtonMethow basin, southwestern British Columbia. The Relay Mountain Group consists of ~27003400 m of clastic rocks that we subdivide into three formal formations. The Callovian and lower Oxfordian Tyoax Pass Formation is marine shale and sandstone turbidites. The Teepee Mountain Formation consists of upper Oxfordian to Valanginian shallow marine clastic rocks with common Buchia and fluvial and marginal marine facies in the upper part of the unit in the northwest. These rocks overlie the lower formation across an abrupt conformable to disconformable contact. The Hauterivian (and Barremian?) Potato Range Formation consists of clastic rocks that are marine in the southeast, mainly nonmarine to the northwest, and derived from the west. This unit displays an abrupt conformable to disconformable contact with the middle formation and locally rests above the lower formation across an angular unconformity. The Relay Mountain Group and correlative strata of the southeastern Coast Belt form an overlap assemblage above the Bridge River and Cadwallader (including Methow) terranes and link them by late Middle Jurassic time. The early Relay Mountain Group appears to have been a fore-arc basin, possibly along an obliqueconvergent margin in the middle unit. The upper unit indicates major changes to a back-arc basin linked to the Ottarasko, and possibly Gambier, arc to the west. This is the oldest probable link (~130 Ma) between the southeastern and southwestern Coast belts.
6
Robson, A. G., S. P. Holford, and R. C. King. "Structural evolution of a normal fault array in the Gambier Embayment, offshore Otway Basin, South Australia: insights from 3D seismic data." Australian Journal of Earth Sciences 64, no. 5 (May 22, 2017): 611–24. http://dx.doi.org/10.1080/08120099.2017.1324822.
Full text
7
Garver, John Irwin. "Provenance of Albian–Cenomanian rocks of the Methow and Tyaughton basins, southern British Columbia: a mid-Cretaceous link between North America and the Insular terrane." Canadian Journal of Earth Sciences 29, no. 6 (June 1, 1992): 1274–95. http://dx.doi.org/10.1139/e92-102.
Full textAbstract:
Basin analysis of Albian–Cenomanian rocks of the Tyaughton and Methow basins suggests that the two basins were filled by three principle petrofacies during a regionally significant contractional event. The Volcanic petrofacies, which occurs only in the Tyaughton basin, comprises west-derived volcaniclastic strata. This petrofacies is dominated by intermediate volcanic clasts and minor metavolcanic, sedimentary, and plutonic clasts. This petrofacies and correlatives to the west (Taylor Creek volcanics and the Gambier Group) are inferred to have been a volcanic cover and volcaniclastic apron to the Insular terrane.The Cherry petrofacies occurs in both the Tyaughton and the Methow basins. Paleocurrents suggest that these chert-rich sediments were shed both east and west off a topographic high that separated the two basins. The Cherry petrofacies is dominated by chert-lithic detritus with subordinate sedimentary and volcanic rock fragments. Locally, the petrofacies is characterized by clasts of chert, greenstone, serpentinite, and blueschist; all these lithologies are common in the unconformably underlying Bridge River terrane, which is inferred to have been the dominant source terrane.Rocks that contain the Arkosic petrofacies are 3–8 km thick in the Methow basin, but only a thin unit is present in the Tyaughton basin. This petrofacies is rich in quartz and feldspar, with lesser quantities of volcanic lithic and metamorphic lithic fragments. Detrital muscovite, which is the hallmark of this petrofacies, is interpreted to have been derived from granitic and metasedimentary rocks to the east. This petrofacies is interpreted to have been largely derived from the Omineca Crystalline Belt, which was rapidly uplifting during this time. The three petrofacies in the two basins provide the first provenance link between the Insular terrane to the west to what was then North America (Omineca Crystalline Belt and the Intermontane Belt) to the east; juxtaposition is inferred to have occurred in a contractional setting.
8
Somaratne, Nara, Jeff Lawson, and Saad Mustafa. "A Heuristic Approach to Estimating Spatial Variability of Vertical Leakage in the Recharge Zone of the Gambier Basin Tertiary Confined Sand Aquifer, South Australia." Journal of Water Resource and Protection 08, no. 02 (2016): 183–200. http://dx.doi.org/10.4236/jwarp.2016.82015.
Full text
9
Bustin, Amanda M. M., Ron M. Clowes, James W. H. Monger, and J. Murray Journeay. "The southern Coast Mountains, British Columbia: New interpretations from geological, seismic reflection, and gravity data." Canadian Journal of Earth Sciences 50, no. 10 (October 2013): 1033–50. http://dx.doi.org/10.1139/cjes-2012-0122.
Full textAbstract:
The southern Coast Mountains of British Columbia are characterized by voluminous plutonic and gneissic rocks of mainly Middle Jurassic to Eocene age (the Coast Plutonic Complex), as well as metamorphic rocks, folds, and thrust and reverse faults that mostly diverge eastward and westward from an axis within the present mountains, and by more localized Eocene and younger normal faults. In the southeastern Coast Mountains, mid-Cretaceous and younger plutons intrude Bridge River, Cadwallader, and Methow terranes and overlap Middle Jurassic through Early Cretaceous marine clastic rocks of the Tyaughton–Methow basin. The combination of geological data with new or reanalyzed geophysical data originating from Lithoprobe and related studies enables revised structural interpretations to be made to 20 km depth. Five seismic profiles show very cut-up and chaotic reflectivity that probably represents slices and segments of different deformed and rearranged rock assemblages. Surface geology, seismic interpretations, physical properties, and gravity data are combined in two profiles across the Coast Mountains to generate two new 2-D density models that are interpreted in terms of the geological units. The western part of the southern Coast Mountains consists primarily of Jurassic to mid-Cretaceous plutons to depths of 20 km with slices of Wrangellia (in the west) and Early Cretaceous volcanic and sedimentary rocks (Gambier group) in the upper 10 km. The eastern part, east of the Owl Creek fault, consists of slices of Cadwallader and Bridge River terranes and Tyaughton–Methow basin strata with limited slices of plutonic rocks at depths less than 10 km. Below that, Eocene and Late Cretaceous plutons dominate for another 10 km.
10
Hildebrand, Robert S., and Joseph B. Whalen. "The mid-Cretaceous Peninsular Ranges orogeny: a new slant on Cordilleran tectonics? II: northern United States and Canada." Canadian Journal of Earth Sciences 58, no. 8 (August 2021): 697–719. http://dx.doi.org/10.1139/cjes-2021-0006.
Full textAbstract:
The mid-Cretaceous Peninsular Ranges orogeny occurred in the North American Cordillera and affected rocks from Mexico to Alaska. It formed when a marine trough, open for ∼35 million years, closed by westerly subduction beneath a 140–100 Ma arc complex. In Part I, we described the features of the orogen in Mexico and California, west to east: back-arc trough, magmatic arc, 140–100 Ma seaway, post-collisional 99–84 Ma granodioritic–tonalitic plutons emplaced into the orogenic hinterland during exhumation, an east-vergent thrust belt, and farther east, a flexural foredeep. In western Nevada, where the Luning–Fencemaker thrust might be a mid-Cretaceous feature, arc and post-collisional plutons occur in proximity. The orogen continues through the Helena salient and Washington Cascades. In British Columbia, rocks of the 130–100 Ma Gambier arc lie west of the exhumed orogenic hinterland and 99–84 Ma post-collisional plutons to collectively indicate westerly subduction. East-dipping reverse faults near Harrison Lake, active from ∼100 Ma until ∼90 Ma, shed 99–84 Ma debris westward into the Nanaimo back-arc region. Within Insular Alaska, the Early Cretaceous Gravina basinal arc assemblage was deformed at 100 Ma and flanked to the east by a high-grade hinterland cut by post-collisional plutons. In mainland Alaska, the 100 Ma collision of Wrangellia and the Yukon–Tanana–Farewell composite terrane occurred above a southward-dipping subduction zone as shown by the 130–100 Ma Chisana arc sitting on Wrangellia and southward-dipping, northerly vergent thrusts in the Lower Cretaceous Kahiltna basin to the north. The outboard back-arc region was filled with post-collisional detritus of the McHugh complex.
Dissertations / Theses on the topic "Gambier Basin"
1
Williamson, Toni. "Transgressions in the Gambier Limestone, Gambier Basin, S.A. /." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09SB/09sbw7324.pdf.
Full text
2
Bush, Angela L. "Physical and chemical hydrogeology of the Otway Basin, southeast Australia." Connect to thesis, 2009. http://repository.unimelb.edu.au/10187/8523.
Full textAbstract:
The Otway Basin of southeast Australia is the subject of this thesis, which incorporates pre-existing geological, hydraulic and major element hydrogeological data with new isotope hydrogeochemical investigations. The region is an Upper Cretaceous–Tertiary basin, filled with siliciclastic and calcareous aquifers and aquitards and characterised by late volcanic activity, pervasive faulting and karstification. (For complete abstract open document.)
3
Degeorges, A., and BK Reilly. "Eco-Politics of Dams on the Gambia River." Routledge, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000830.
Full textAbstract:
In the 1980s, USAID (US Agency for International Development) funded an
environmental assessment of dams on the Gambia River, which determined that construction of the
Balingho anti-salinity barrage would result in adverse unmitigative environmental and social
consequences. Attempts by host country politicians, USAID and UNDP (United Nations
Development Programme) to discredit this process made it necessary to take the matter to the
Natural Resource Defense Council. A case study of the events surrounding these dams and their
potential construction illustrates the ‘big dam’ paradigm and its potential harm to people, their
livelihoods and the environment in Sub-Saharan Africa.
4
Amara, Sakpa S. "Environmental change and flooding in the Gambia River Basin." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358523.
Full textAbstract:
It is argued in this thesis that the climate signal shows more strongly in the runoff regime of the Gambia River Basin (GRB) than the signal from deforestation. Partial and multiple regression was used to partition the effects on runoff of rainfall characteristics and deforestation over the GRB since the turn of this century. The expected shorter, higher more rapidly responding wet season flood peaks which result from deforestation have not occurred in the GRB. Rather, peak floods have fluctuated since the beginning of the century, but showing a clear declining trend similar to the rainfall regime. The large size (z 7550 km') of the sub-catchments of the GRB inhibit synchronisation of the rapid runoff that is associated with deforestation. Furthermore, deforestation, as it occurs in the GRB, takes place piece-meal as small plots of land are cleared. The nature of clearance of vegetation is important; the vegetation cleared is either replaced with another type of vegetation, for example, groundnuts or millet, or is soon allowed to recover after a cropping phase. Surface and sub-surface hydrological processes within the GRB are therefore not subjected to the severe form of alteration that characterise massive and total clearance of vegetation schemes in urban development. However, deforestation has significantly affected low flowsthere are now longer periods of lower dry season flows, and these are ascribed to the diminishing recharge of ground water. By augmenting overland flow and reducing interception and infiltration, deforestation causes a reduction in ground water recharge, which is an important component of dry season flows. Both climate change and deforestation have worked in parallel to cause a fluctuating but declining flow regime of the Gambia River. This, in turn, affects both the agricultural potential and productivity of the GRB.
5
Baldeh, Musa. "The Perceptions of Gambian Basic and Secondary School Teachers About Outdoor Education." Thesis, Linköpings universitet, Institutionen för beteendevetenskap och lärande, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166609.
Full textAbstract:
Outdoor education is believed to be a new teaching approach and method in the education framework which relates to learning through natural places using direct experience. However, the teaching approach that is mostly used in the Gambian schools is based on the traditional approach of teachings as well as many African countries. As a relatively new teaching technique, outdoor education is gaining recognition from many researchers who are developing a keen interest in it. Thus, the aim of the current thesis is to investigate the perceptions of Gambian Basic and Secondary school teachers about outdoor education. in that regard, six (6) Gambian teachers from different teaching subjects, grades, and regions reported their views about outdoor education. A qualitative approach methodology with the use of semi-structured interview was employed to get teachers perceptions. After the data collection, thematic analysis was used for analyzing the collected data from which three (3) themes emerged to report the participants’ opinions. The participants revealed their basic knowledge and perceptions about outdoor education and presented some characteristics and examples of how the practice outdoor education. They emphasized that they view outdoor education as a teaching approach with the use of outdoors. However, according to them, any teaching activity that involves using the outside the four corners of the classroom or the school premises, is considered outdoor education. They noted that outdoor education can take place in the form of excursions, fieldtrips, classes outside the class under a tree or within the school premises. Besides, although the teachers indicated that the main teaching approach, they use is still the traditional teaching and learning approach, they showed willingness to enrich their classes with use of outdoor education. They further revealed that the main places they conduct outdoor education is the school yard, under a tree, a visit to places of interest, excursions to various historical places or museums and the like. The Gambian teachers acknowledged many potentials of outdoor education to the students including stimulation of multi-senses, increased understanding, improved social relation and cooperation, boosting of their health and wellbeing, developing curiosity, and giving students a sense of freedom and happiness. However, participants also revealed several barriers that suppress them from doing outdoor education effectively. Among the barriers mentioned includes, inadequate funding, lack of support from parents and school administrators, lack of pedagogical training, tight schedule, and limited time. Thus, further research is needed to help testifying the results of the current study and give more insight into the field of outdoor education in the Gambia and Africa at large
6
Spathopoulos, Phoebus. "The geological structure and history of the Gambia Basin and Senegal Continental Margin." Thesis, University College London (University of London), 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284802.
Full textAbstract:
This thesis presents the results of an investigation of the structure and evolution of the Senegal continental margin and the adjacent Gambia Basin, based on seismic, gravity, magnetic, bathymetric and borehole data. It establishes the relation between the structure of this region and the overall geological and tectonic history of the Eastern Atlantic Ocean. The study begins with a presentation of the general geological features of the area and a review of previous work close to the West African continental margin. New bathymetric information from the area between 2°-18°N and 7°-45°W is then presented, which provides a detailed picture of the seafloor relief, its structural grain and an indication of the depositional patterns. Long single-channel seismic reflection profiles running from the continental shelf through the Gambia Basin have been tied to deep-sea drill sites to establish a seismic stratigraphy. The extent of the main reflectors and the structural characteristics of inactive ocean fracture zones have been determined from approximately 3500 km of reflection profiles. Analysis of the basement depth reveals the presence of large depth anomalies in the region, which have been related to the uplift of the nearby Cape Verde Rise. The position of an important tectonic boundary between rough and smooth basement in the study area has been defined as lying between magnetic anomalies M21 and M16 (150-142 Ma). Seismic refraction lines shot in the Gambia Basin and in the region immediately to the south reveal an anomalous oceanic structure, associated with the formation of fracture zones under the sediments of the basin. Crust as thin as 1.4 km, without an oceanic Layer 3 has been found near 1l°N, 23°30'W. In view of the presence of several closely-spaced fracture zones, the crustal structure of much of the Gambia Basin is probably not of normal oceanic type. Possible mechanisms responsible for the anomalous accretion of ocean crust are discussed. Crustal structure has also been inferred from new free-air gravity anomaly measurements between 3°-1.8°N and 7°-26°W and from the Bouguer anomalies on land. Two-dimensional crustal models based on gravity anomalies and constrained by refraction and other data have been derived for several traverses across the West African continental margin and the Gambia Basin. These models demonstrate important differences in crustal thickness and lateral variations in the density of the crustal and mantle rocks across the area. The models indicate that neither the transitional crust under the Senegal Basin and the adjacent shelf and slope, nor the fracture zones under the Gambia Basin are isostatically compensated at the level of the Noho. Furthermore, a large part of the Senegal continental margin and the Senegal Basin is shown to be underlain by transitional, stretched continental crust on which a thick sedimentary cover has accumulated. The subsidence history and the structural models indicate that the Cenozoic sediments are not isostatically balanced by the mechanism of local Airy compensation. These studies reveal that the structure of the Senegal margin and the Gambia Basin exhibits important differences from that of adjacent areas to the north and south, contrasts which appear to be related to the early opening history of the equatorial Atlantic.
7
Samba, Idrissa. "Simulation of rainfall, runoff, peakflow and soil loss in the upper Gambia River Basin." Thesis, The University of Arizona, 1986. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0324_sip1_w.pdf&type=application/pdf.
Full text
8
Shiao, Shin-Hong. "Molecular and cellular basis of interactions between Anopheles gambiae and Plasmodium berghei." Université Louis Pasteur (Strasbourg) (1971-2008), 2005. https://publication-theses.unistra.fr/public/theses_doctorat/2005/SHIAO_Shin-Hong_2005.pdf.
Full textAbstract:
Le moustique anophèle est le vecteur majeur du paludisme. Cette maladie provoquée par les parasites du genre Plasmodium est transmise par une piqûre infectieuse d'anophèle. Le parasite subit des pertes massives pendant son cycle de développement chez l'anophèle, ce qui suggère que les moustiques sont capables de développer une réaction immunitaire efficace contre le parasite. Cependant, les mécanismes cellulaires et moléculaires des interactions entre parasite et anophèle restent mal connus. Pour aborder cette étude, nous avons commencé par établir un système in vitro basée sur la culture d'une lignée cellulaire d'anophèles de type hémocytaire, en présence d'oocinètes de Plasmodium. Nous avons démontré que, dans ce système in vitro, les parasites induisent une réponse immunitaire de type non spécifique comprenant, entre autres, la synthèse de peptides antimicrobiens et la phagocytose. La protéine à motif thioester, TEP1, agit en tant qu'opsonine chez l'anophèle et favorise la phagocytose des bactéries par les hémocytes. Après avoir vérifié que notre lignée cellulaire était capable de produire une protéine TEPI fonctionnelle pour la phagocytose, nous avons utilisé ce système pour étudier la fonction de TEP1 dans la réponse antiparasitaire. Contrairement à la situation observée in vivo, nous n'avons cependant pas détecté de liaison directe entre TEP1 et la surface des oocinètes et conclu que le modèle in vitro était peu adapté à l'analyse fonctionnelle de TEP1. Nous avons alors développé la technique d'invalidation des gènes par l'ARN double brin (dsRNA) chez l'anophèle adulte et avons pu démontrer que la liaison de TEP1 sur la surface des parasites induit leur élimination dans le tube digestif du moustique. Ces résultats montrent le rôle crucial des réactions immunitaires de l'anophèle vis-à-vis du parasite. Nous avons utilisé la microscopie électronique à transmission pour suivre le développement du parasite P. Berghei chez A. Gambiae et avons observé que la majorité des oocinètes envahit les cellules épithéliales du moustique avant la polymérisation complète de la matrice péritrophique. De plus, ces oocinètes prennent préférentiellement un itinéraire extracellulaire pour migrer à travers le tube digestif. Cette observation est très importante, car elle démontre que les parasites sont confrontés à l'environnement hostile de l'espace extracellulaire du tube digestif plutôt qu'au milieu cytoplasmique des cellules épithéliales. Enfin, nous avons démontré que la dite “zone filamenteuse” qui entoure les parasites mélanisés se compose d'actine polymérisée. Nous l'avons renommée "zone d'actine". La formation de cette zone se produit lorsque les parasites sont morts ou mourants, ce qui suggère qu'elle n'est pas directement responsable de la mort des parasites. L'invalidation de TEP1 par la technique du dsRNA supprime la formation de la zone d'actine, ce qui montre l'implication, directe ou indirecte, de TEP1 dans cette structure. Nous proposons ainsi un modèle d'élimination parasitaire: le parasite est d'abord tué par un mécanisme dépendant de TEP1, puis, subit une lyse ou mélanisation. Les cellules épithéliales identifient les parasites morts ou mourants et se protègent par polymérisation d'actine dans la zone de contactAnopheles mosquitoes are important vectors of human malaria, which is caused by Plasmodium parasites in the sub-Sahara. The transmission of this disease is initiated by an infectious bite of an Anopheles mosquito. The parasite undergoes massive losses during its development in the mosquito, suggesting that mosquitoes are able to mount a potent immune response against the parasite. However, the cellular and molecular mechanisms of mosquito-parasite interactions are not completely understood. We first established an in vitro co-culture system using a mosquito hemocyte-like cell line of A. Gambiae and chose a thioester-containing protein 1 (TEP1), which acts as an opsonin and promotes phagocytosis of bacteria by hemocytes, as a candidate to study its role in mosquito-parasite interactions. We demonstrated that the mosquito cells in the co-culture system responsed to the parasite presence by activation of general immune responses, including the induction of synthesis of antimicrobial peptides and phagocytosis. As no specific interactions between TEP1 and the ookinetes could be detected, we concluded that our in vitro model is unsuitable for TEP1 functional analysis. By using a double-stranded RNA (dsRNA) silencing technique and phenotype assays, we demonstrated that the binding of TEP1 to Plasmodium parasites mediates their killing in the mosquito midgut. These results document the important role of mosquito immune responses, especially those mediated by hemocytes, in the establishment of vectorial capacity in A. Gambiae. We performed transmission electron microscopy to follow the development of P. Berghei parasites in the A. Gambiae midgut. We observed that the majority of P. Berghei ookinetes invade the mosquito midgut before complete polymerization of the peritrophic matrix. Moreover, during the invasion, ookinetes preferentially take an extracellular route to migrate across the midgut. This conclusion is important as it suggests that during midgut invasion parasites are rather facing hostile environlment of the extracellular space than the cytoplasmic milieu of the epithelial cells. We demonstrated that the previously described filamentous zone surrounding melanized parasites is composed of polymerized actin and renamed it the “actin zone”. The formation of the actin zone occurs when parasites are dead or dying, suggesting that the actin zone is not associated directly with parasite killing. The silencing of TEP1 by dsRNA abolishes the formation of the actin zone in both susceptible and refractory mosquitoes, suggesting that TEP1 could be the genetic determinant of this structure. Therefore, a model of actin-based parasite clearance is proposed: the parasite is first killed by a TEP1-dependent mechanism, and subsequently the parasite is lysed or melanized. Dead or dying parasites are recognized by epithelial cells, and the actin zone is then formed to separate the dead or dying parasites from host tissues
9
Witzig, Claudia. "Investigating the genetic basis of pyrethroid resistance in two members of the Anopheles gambiae complex." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/6973/.
Full textAbstract:
Chemical control of mosquito vectors, via indoor residual spraying or insecticide treated bed nets, is an integral component of malaria control strategies. Limited availability of insecticides licensed for public health and the rapid development of resistance in mosquito populations to these insecticides, in particular to some pyrethroids, may compromise vector control efforts. With the exception of mutations in the insecticide target sites, relatively little is known about the genetics of pyrethroid resistance in malaria vectors. In some populations candidate effector genes, e.g. cyp6p3 or cyp6m2 in An. gambiae s.s. from Akron, Benin, have been identified as being over expressed in resistant strains but the underlying mechanisms responsible for the increased expression remain unknown. In this study, a combination of quantitative PCR, genetic mapping and microarray tools were used to investigate the mechanisms responsible for pyrethroid resistance in two African major malaria vectors, Anopheles gambiae and An. arabiensis. The current work was unable to confirm an association of these known candidates in either a laboratory colony established from Akron or in recent field caught material. Therefore a genetic mapping approach was adopted using field collected mated females to generate F2 isofemale lines. A major QTL on chromosome 3R was identified which coincides with a genomic region previously implicated in pyrethroid resistance in East African populations. This is the first genetic mapping of insecticide resistance using natural out-bred populations of Anopheles and the advantages and limitations of this approach are discussed. In a second experiment, genetic loci involved in permethrin resistance in An. arabiensis were mapped by establishing genetic crosses between a permethrin resistant strain from Chad and a susceptible strain from Mozambique. A single QTL on chromosome 2R was identified in the F2 progeny that accounts for ~24% of the phenotypic variance. This QTL coincides with a large cluster of detoxification genes. Pyrethroid resistance is not associated with target-site mutations in this population. Finally, microarrays were used to identify genes differentially expressed between a backcross population, generated by crossing the F1 population from the resistant Chad strain and the susceptible Mozambique strain of An. arabiensis back to the parental resistant strain, with the susceptible strain. A number of candidate genes were identified, including the P450 genes cyp4h24 and cyp9j5, but neither of these were located within the boundaries of the QTL on 2R. These findings support the presence of metabolic resistance in this population and fine mapping of the identified QTL as well as further investigation of the microarray hits is warranted.
10
Jammeh, Burama L. J. "Curriculum policy making : a study of teachers' and policy-makers' perspectives on The Gambian Basic Education Programme." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2880/.
Full textAbstract:
This thesis aims at a critical understanding of how the curriculum policy making process is perceived by teachers and policy-makers in The Gambia, a former British colony. The complexity of curriculum policy issues requires this study to draw on multiple theoretical underpinnings in order to gain insight into curriculum policy relating to Basic Education in The Gambia. Therefore, curriculum theories and education policy literature including the issues of globalisation and national policy are engaged to frame the data collection, analysis and findings. Data obtained from semi structured interviews are used to analyse the perceptions. The thesis examines critically the historical and contemporary approaches to curriculum policy making, identifies the key policy players and analyses their significance in the construction of the national curriculum policy. The thesis further investigates experiences and views about the policy in practice and recommends a new approach to the curriculum policy making. Two levels of the curriculum policy making process are found to be influential in The Gambia: the international (global) and the national and local levels. While the global influences are profound on the strategic education policy, the national and local effects are stronger than the global impact on the operational policy (curriculum plans). The thesis argues that policy is not simply received and implemented as given. Although incidences of compliance are noted, curriculum policy guidelines developed by the Ministry of Education are continually interpreted, sometimes misunderstood and/or resisted by the teachers. Gaps between policy and the implementation are found, resulting from the resource constraints and the practitionersâ influences and impacts. A curriculum policy reform is recommended, recognising the centrality of teachers in the curriculum process, promoting the empowerment of the teachers and building their capacity to engage in informed policy mediation and to enable them to put their own policy into practice.
Books on the topic "Gambier Basin"
1
Gambia River Basin Development Organisation. Aquatic ecology and Gambia River Basin development. Ann Arbor, Mich: Center for Research on Economic Development, University of Michigan, 1985.
Find full text
2
Amara, Sakpa S. Secular changes in rainfall and runoff over the Gambia river basin. Reading: University of Reading Department of Geography, 1993.
Find full text
3
Sharma, M. L. Geomorphology of semi-arid region: A case study of Gambhir River Basin, Rajasthan, India. Jodhpur: Scientific Publishers, 1986.
Find full text
4
When core values are strategic: How the basic values of Procter & Gamble transformed leadership at Fortune 500 companies. Upper Saddle River, N.J: FT Press, 2012.
Find full text
5
Andy, Butcher, ed. When core values are strategic: How the basic values of Procter et Gamble transformed leadership at Fortune 500 companies. 2nd ed. Boston, MA: Pearson, 2012.
Find full text
6
Hydara, Sherif Yunus. Analysis of the junior secondary school certificate examinations/Gambia basic education certificate examinations results (2000-2004): Trends of performance by gender, subject and region. Gambia?: s.n., 2005.
Find full text
7
Mohamed S, Helal. Part 3 The Post 9/11-Era (2001–), 66 The ECOWAS Intervention in The Gambia—2016. Oxford University Press, 2018. http://dx.doi.org/10.1093/law/9780198784357.003.0066.
Full textAbstract:
This chapter discusses the legal justifications for the ECOWAS intervention in The Gambia, including: pro-democratic intervention, intervention by invitation, and Security Council authorization. It argues that the intervention is unjustifiable because pro-democratic intervention is not recognized as a legal basis for intervention, and because the Security Council did not authorize the intervention. The intervention is also not justifiable under the doctrine of intervention by invitation because President-Elect Adama Barrow did not exercise effective control when he invited ECOWAS to intervene to enforce the results of the 2016 Presidential Election. This chapter argues, however, when combined with earlier ECOWAS interventions, this intervention in The Gambia could signify a shift in the rules governing intervention by invitation, whereby a legitimate, but ineffective, government may enjoy the right to invite foreign intervention. Finally, this chapter argues that ECOWAS violated the prohibition on the threat of force by issuing an ultimatum to force the former Gambian President to relinquish power.
8
Usa, Ibp. Gambia Business Law Handbook Volume 1 Strategic Information and Basic Laws. IBPUS.COM, 2019.
Find full text
9
Cohen, Jonathan D. For a Dollar and a Dream. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/oso/9780197604885.001.0001.
Full textAbstract:
Abstract Every week, one in eight Americans places a bet on the dream of a life-changing lottery jackpot. Americans spend more on lottery tickets annually than on video streaming services, concert tickets, books, and movie tickets combined. The typical story is that lotteries are a tax on poor people who do not understand basic probability. The reality is more complicated. For a Dollar and a Dream shows how the economic conditions of the late twentieth century led millions of Americans to judge the long odds of a jackpot to be their best chance at a new life. As the rich got richer and as rates of social mobility stagnated, many turned to the lottery as their only chance at the American Dream. Gamblers are not the only ones who bet on betting. Drawing on archives from 17 states, this book illustrates that states legalized gambling hoping to hit a jackpot of their own. As mid-twentieth-century prosperity unraveled, taxpayers and policymakers wanted government to provide public services but did not want to pay for them. Enter lotteries. Even as evidence emerged that lotteries provided only a small percentage of state revenue, and even as data mounted about their appeal to the poor, states kept enacting them, kept advertising, and kept adding new games, desperate for their long-shot gamble to pay off. For a Dollar and a Dream charts the untold history of the nation’s lottery system, revealing how players and policymakers alike got hooked on hopes for a windfall.
10
Islam, Power, and Dependency in the Gambia River Basin: The Politics of Land Control, 1790-1940. University of Rochester Press, 2016.
Find full textBook chapters on the topic "Gambier Basin"
1
Boeyens, Jan C. A. "The Classical Basis." In The Quantum Gamble, 51–67. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41621-2_4.
Full text
2
Mendis, Sunimal. "A Conceptual Basis for Justifying the Grant of an Exclusive Right." In A Copyright Gambit, 87–105. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-59454-4_5.
Full text
3
van Oers, Kees, and David L. Sinn. "Toward a Basis for the Phenotypic Gambit: Advances in the Evolutionary Genetics of Animal Personality." In From Genes to Animal Behavior, 165–83. Tokyo: Springer Japan, 2011. http://dx.doi.org/10.1007/978-4-431-53892-9_7.
Full text
4
Ferris, Jesse. "Guns for Cotton." In Nasser's Gamble. Princeton University Press, 2012. http://dx.doi.org/10.23943/princeton/9780691155142.003.0005.
Full textAbstract:
This chapter examines Egypt's growing dependence on the Soviet Union as a result of the war in Yemen. It explores the tensions that developed between the two countries after Khrushchev's ouster as the Soviet government began to exploit Egypt's difficulties in order to obtain basing rights that would even the playing field against the US Sixth Fleet in the Mediterranean. The uneasy dependency on Moscow, in conjunction with the rupture in relations with Washington, shattered the edifice of Egyptian neutrality, which stood at the foundation of Nasser's international clout in the 1950s, and set the stage for the crisis that produced the Six-Day War.
5
Ferris, Jesse. "Food for "Peace"." In Nasser's Gamble. Princeton University Press, 2012. http://dx.doi.org/10.23943/princeton/9780691155142.003.0004.
Full textAbstract:
This chapter analyzes the breakdown of Egypt's crucial relationship with the United States as a result of the intervention in Yemen. Contrary to conventional wisdom, which posits a later break in US–Egyptian relations over Lyndon Johnson's pro-Israel policy, the chapter highlights the primacy of the US–Saudi alliance and the early emergence of Yemen as the central bone of contention in the final year of the Kennedy administration. A fundamental assumption underlying the provision of massive assistance to Egypt was that it would solidify the basis for a long-term relationship founded on mutual interests. But in practice, the opposite occurred: US aid fostered an unhealthy dependency, which rendered relations with Egypt susceptible to serious crisis in the event of disruption.
6
Alvesson, Helle M., and Lorena Viñuela. "The Gambia Case Study: Ministry of Basic and Secondary Education." In Institutions Taking Root: Building State Capacity in Challenging Contexts, 71–107. The World Bank, 2014. http://dx.doi.org/10.1596/978-1-4648-0269-0_ch3.
Full text
7
Moscati, Ivan. "Experimental Utility Measurement." In Measuring Utility, 217–38. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199372768.003.0014.
Full textAbstract:
Chapter 13 discusses some laboratory experiments to measure the utility of money for individuals on the basis of their preferences between gambles where small amounts of money were at stake. The experiments were based on expected utility theory (EUT) and were conducted in the 1950s at Harvard and Stanford by three groups: statistician Frederick Mosteller and psychologist Philip Nogee (1951), philosophers Patrick Suppes and Donald Davidson with the collaboration of psychologist Sidney Siegel (1957), and Suppes and his student Karol Valpreda Walsh (1959). These scholars were confident about both EUT and the possibility of measuring utility through it. They designed their experiments so as to neutralize some psychological factors that could jeopardize the validity of EUT and spoil the significance of the experimental measurements of utility, and they concluded that their experimental findings supported both the experimental measurability of utility based on EUT and the descriptive validity of the theory.
8
Moscati, Ivan. "Marschak and Utility Measurement at Yale." In Measuring Utility, 239–46. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199372768.003.0015.
Full textAbstract:
Chapter 14 continues the history of the experimental attempts to measure utility by discussing two further experiments performed at Yale University in the early 1960s, one by Trenery Dolbear and the other by Jacob Marschak in association with Gordon Becker and Morris DeGroot. Like the experiments conducted in the 1950s, these were also based on expected utility theory (EUT) and aimed at measuring the utility of money of individuals on the basis of their preferences between gambles where small amounts of money were at stake. There are some differences in the designs of the experiments of the 1950s and those of the 1960s. Like the experimenters of the 1950s, however, Dolbear, Marschak, Becker, and DeGroot also confidently assessed their experimental findings as validating EUT: the theory was not 100 percent correct, but in an approximate sense, it appeared to be an acceptable descriptive theory of decision-making under risk.
9
Faye, Cheikh. "Positive Effect of Climate Change on Water Resources Enhancement in Africa: Case of Gambia River Basin (Senegal)." In Hydrology - The Science of Water. IntechOpen, 2019. http://dx.doi.org/10.5772/intechopen.79715.
Full text
10
Milanov, Momchil L., and Robert Kolb. "Introductory Note." In The Global Community Yearbook of International Law and Jurisprudence 2021, 317—C13.N20. Oxford University PressNew York, 2023. http://dx.doi.org/10.1093/oso/9780197659083.003.0014.
Full textAbstract:
Abstract In this very difficult first year of the pandemic, the functioning of the Court was affected by COVID-19 without, however, significantly disrupting it. The year 2020 was interesting because the Court had to deal with three diverse cases (appeals jurisdiction, diplomatic law, validity of arbitral award), two of which concerned its so-called “supervisory jurisdiction,” which has not happened before. Only the judgment in Equatorial Guinea v. France concerned the merits. The judgment in Guyana v. Venezuela is of particular interest for any person interested in international procedural law. Never in its history has the Court been presented with this particular type of compromissory clause, which does not resemble any other jurisdictional basis relied on by a state before the International Court of Justice. The orders in Gambia v. Myanmar and the appointment of experts in Congo v. Uganda complete the picture.
Conference papers on the topic "Gambier Basin"
1
Catteruccia, Flaminia. "Molecular basis of mating and reproduction inAnopheles gambiae." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.94651.
Full text
2
Hasnan, Hasnor Farhana, Trisakti Kurniawan, and Chyril Anwwar Ibrahim. "Regional Mapping and Characterization of Upper Albian Shelf Reservoir Using Data Integration at Deepwater Gambia." In International Petroleum Technology Conference. IPTC, 2022. http://dx.doi.org/10.2523/iptc-21938-ea.
Full textAbstract:
Abstract The upper Albian shelf reservoir at deepwater Gambia is modelled as deltaic and basin floor fan plays, identified based on seismic and well data characterization as well as sequence stratigraphy. There are recently proven Albian shelf reservoirs in the neighboring Senegal waters, the SNE field, which become the motivation for exploring the deepwater Gambia, and to spud the first well for offshore The Gambia in 40 years. Recent discovery wells in the deepwater MSGBC basin have shown that the main geological risk in finding prospective leads in this region will depend on the understanding of reservoir presence and the distribution of reservoir effectiveness, where these are mainly influenced by the presence of quartz and calcite and their cementation rate. This paper describes the effort in integrating geological information as a basis to develop the best geophysical approach as part of a derisking tool for exploration lead and prospect screening. The main objective is to develop a predictive tool which combines the benefit of understanding the rock properties under these geological circumstances with the elastic properties as a representative seismic response to enhance the reliability of the model in predicting reservoir effectiveness distribution. This analysis allows us to effectively reduce the uncertainty in the prediction of low contrast reservoir from the seismic data.
3
Ibrahim, Shehu. "Academic Staff Recruitments and Promotions BY Human Resources Managers at Nigerian Universities: A Case Study of Kaduna State University, Kaduna, Nigeria." In 28th iSTEAMS Multidisciplinary Research Conference AIUWA The Gambia. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2021. http://dx.doi.org/10.22624/aims/isteams-2021/v28n2p2.
Full textAbstract:
This proposed conference paper which bearing the title of: Academic Staff Recruitments and Promotions by Human Resource Managers At Nigeria Universities: A Case Study of Kaduna State University” Consisting of Introduction and two parts. On the introduction: it discusses historical background, aims and objectives, significance of research, research methodology, research problems, literature review. On part one: The paper will examines Human Resources: It’s definition, functions, recruitments and promotions, it’s basis and types. Main types of interviews, short listing and application forms. On part two: The researchers explored the practical aspect of recruitments and promotion procedures done by Human Resource Managers in Kaduna State University (KASU) of Nigeria. In the conclusion the paper includes findings and recommendations. keywords: Human Resources, Appointments, Promotion, Interviews, Recruitments, Universities, Nigeria
4
Aimufua, G. I. O., N. P. Onyechi, and U. A. Muhammad. "Development of Anti- Polypharmacy Management System." In 28th iSTEAMS Multidisciplinary Research Conference AIUWA The Gambia. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2021. http://dx.doi.org/10.22624/aims/isteams-2021/v28p14.
Full textAbstract:
The prevalence of adverse drug reactions, adverse drug effects, avoidable deaths, and other drug-related problems arising from multiple drug administration is a wake-up call to our medical practitioners and the world at large, hence prompt action is required to this effect. In this paper, a computerized web-based system called “Anti-Polypharmacy Module” (APM) is being proposed which is geared towards checking the menace of polypharmacy by highlighting its adverse effect and drug-drug interactions. The drug library which contains most of the required information will be used to accomplish this task. The application is designed to be a user-friendly one. The system methodology for this work is the System Development Life Cycle (SDLC). This system is implemented using Java-servlet (JSP), JQuery, and SQL as a collection of software development tools. It is also a web-based application hence HTML5 and CSS3 are carefully crafted together for maximum user-friendliness. Apache Maven and Tomcat 7 are deployed for the back-end server technology. For database query optimization, the basic rules are strictly followed as discussed in the methodology. Keywords: Polypharmacy, Paediatrician, Therapeutic, Morbidity, Mortality, Drug-bank Database
5
Joof, Sarah Elizabeth, and Wahid Damilola PhD Olanipekun. "Dynamics of Talent Management in Enhancing Employees’ Performance in the Gambian Banking Sector." In Advances in Multidisciplinary and Scientific Research Journal Publication. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2022. http://dx.doi.org/10.22624/aims/isteams/lasustech2022v30p1.
Full textAbstract:
Human resource is the most important asset that organizations require in the 21st century and employees who constitute the human resource must be satisfied to drive organization performance and success on a sustainable basis. Talent management refers to the process of integrating new worker, developing, and retaining the current workers and attracting highly skilled personnel to work for your company. This study examined the effect of talent management on employee performance. The study examines the impact of talent management process such as talent attraction, retention, and development on employee performance. The study adopted a survey research design. The study population comprises of staffs of Vista Bank (Former First International Bank) Plc within Kanifing Municipal Council (KMC) Metropolis in The Gambia. Primary data was collected through a structured questionnaire. Out of 30 copies administered to the respondents, 27 copies were completed and returned. Data were analyzed and hypotheses were tested at 5% level of significance. Findings revealed that talent attraction significantly influences employee performance. Also, talent retention significant impacts on employee performance. Talent development significantly influences employee performance. Based on the findings of this study, the study concludes that talent management significantly impacts employee performance. The study recommends that talent management programs and strategies must also be enshrined into the organizations philosophy to improve employee satisfaction and performance. Keywords: Talent Management, Strategies, Employee, Performance, Bank, Gambia
6
Alasiri, W. A., D. O. Adewumi, S. T. Jelili, and O. B. Longe. "Academic Mentoring As Determinant For Academic Competence Among Teaching Staff In Lagos State Polytechnic, Ikorodu, Lagos, Nigeria." In 28th iSTEAMS Multidisciplinary Research Conference AIUWA The Gambia. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2021. http://dx.doi.org/10.22624/aims/isteams-2021/v28p16.
Full textAbstract:
Research studies have shown that most young and inexperienced academic members in higher institutions all over the world especially in developing nations required assistance in developing their academic career and enhancing their teaching experiences through mentoring. However, academic mentoring has not been effective in many higher institutions of learning, especially those in the developing world, Nigeria not exempted. With quantitative and qualitative approaches, this study explored mentoring among teaching staff, looking at how both variables determine the academic competence of teaching staff in Lagos State Polytechnic, Ikorodu Lagos. A cross sectional survey of all the schools in Lagos State Polytechnic was carried-out with a sample size of 200. The sampling technique used is purposive sampling. The study used descriptive statistics which include tables, percentages, and graph while Chi-Square was used to analyze the formulated hypothesis. Questionnaire was used as the major research instrument. The data analyzed for this study was from 150 academic staff that their questionnaire were properly filled and submitted and out of this, Chief Lecturers, Principal Lecturers and Senior Lecturers constituted 95 (63%) respondents, who we referred to as Mentor, and others constituted 55(37%), who we referred to as Mentee. This study used theories on mentoring, leadership and career development that relate to the study. The paper focused on three main research questions: measuring the level of awareness, mentoring and competence and formation of mentoring among teaching staff of Lagos State Polytechnic, Ikorodu. Findings from this study showed that teaching staff in Lagos State Polytechnic are very much aware of academic mentoring, and they believed that academic mentoring were developed on the basis of familiarity in research interests. It was also discovered from the review of literature that, the unresponsive attitude of some junior teaching staff, the pressure of administrative duties, unavailability of formal mentor/mentee structures were identified barriers to good mentoring skills among mentors and mentees. Based on these findings, the paper recommended among others that the institution should develop staff through policies on mentoring in Lagos State Polytechnic systems, this will serve as an avenue to groom new generation of competent academic staff, who will build responsible future leaders Keywords: Academic mentoring, grooming, academic competence, teaching staff
7
Onochie, Abraham Lawrence. "The Changing Nature of New Employees’ Orientation: “Staff Retention and Turnover Reduction” An Empirical Study In The Gambia's Public And Private Sectors." In 28th iSTEAMS Multidisciplinary Research Conference AIUWA The Gambia. Society for Multidisciplinary and Advanced Research Techniques - Creative Research Publishers, 2021. http://dx.doi.org/10.22624/aims/isteams-2021/v28p6.
Full textAbstract:
Purpose: One of the major areas on HRM is how to develop employees and get the most efficient out of them by retaining employees and reducing an organization's turnover rate. People leave organizations all the times, depending on various reasons that might be personal and out of the control of the employee, and/or either due to conflict of interest of employees seeking a change in their careers. There are various possible factors of the range of control of the organization. However, it has been observed that organizations can keep their employees longer if they are oriented and welltrained. In this paper, investigation will be on the impact of employees' orientation as a tool towards reducing high turnover rates. Methodology: Both primary and secondary data were used to gather information for this investigation. The secondary data was obtained from articles, blogs, papers online, and textbooks. The questionnaires were sent to respondents electronically via Google forms. A link was produced: Https://forms.gle/GEgBCklkmlkMXmL9 after the survey was built, it was shared amongst respondents with an attached letter of clarification explaining the process of participation which was on voluntary basis. The survey was opened for a span of one week and within a week 144 surveys were filled and submitted above the benchmark which targeted 100 participates. The targeted audience was a random selection of The Gambia’s workforce, there was no specific organization under reviewed. Findings: The Statistics of this survey shows that very few numbers of employees stayed with an organization for more than 5 years of employment which indicates a high turnover. Over 73% of the respondents received orientation prior to job engagement with little and/or less information about how to do their jobs. Whereas, over 27% of employees never received any orientation. Results also show that management does not get involved often in ensuring that their newly hired employees understand what-to-do? And how-to-do-their jobs, rather most employees ended up learning their jobs by themselves. Finally, this survey recorded 38% for employees’ feedback and 66% of the time management does not respond to staff feedback. Feedback is one of the most ideal ways of improvement but management concentrates less on it. On the side of training and development, 42% of the respondents believe that orientation helps in reducing the rate at which people leave an organization. While 36% feel neutral about this statement and 50% of the respondents believe that orientation helps in retaining employees. Keywords: Employee Retention, Organization's Turnover Rate, Employment
8
Shang, Yuchen, and Nikolaos I. Xiros. "Numerical Analysis of Hydrodynamic Performance of FX-83-W Hydrofoil Current Turbine." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70995.
Full textAbstract:
Ocean current flow characteristics are relatively stable and predictable, current turbine absorbs the energy of the ocean currents by the blades with a relative stable and lower angular velocity which indicates the capacity of current turbine greater than the onshore wind turbine. In this paper, the CFD method is utilized to calculate and analyze the working principle of FX-83-W current turbine. The three-dimensional coordinate of FX-83-W Hydrofoil blade surface have been calculated by MATLAB code, and 3D model has been established in Gambit. The basic control equations of CFD and its numerical solution are described, Reynolds Averaged N-S equations is used, and the realizable k-e turbulence model is introduced to solve the Reynolds stress in the RANS equation. The numerical algorithm is the finite volume method (FVM), and the numerical simulation of CFD is used to study the open water performance, leading to thrust coefficient KT and torque coefficient KQ of FX-83-W Hydrofoil. The hydrodynamic thrust and hydrodynamic power of the ocean current turbine under different sea conditions have been obtained by numerical simulation.
9
Singh, Pawan K., Hua Feng Samuel Tan, Chiang Juay Teo, and Poh Seng Lee. "Flow and Heat Transfer in Branched Wavy Microchannels." In ASME 2013 4th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/mnhmt2013-22058.
Full textAbstract:
The Wavy channels are supposed to enhance performance of microchannel heat sink through chaotic advection. The change in boundary layer thickness (thinning) and the macroscopic mixing due to the formation of Dean’s vortices have been found to be main reasons for enhanced heat transfer in wavy microchannel. Present study carries out a detailed numerical investigation for flow and heat transfer in wavy channel. A 3D geometry for a single loop of wavy channel is modeled in GAMBIT and simulated in CFD software FLUENT. The basic dimensions were 0.15 mm width, 0.3 mm height and 1.5 mm length. The formation of Dean vortices are shown. In parametric study, the effect of Re number on the flow and heat transfer performance is shown. Heat transfer was found to be increased with Re. The effect of Aspect ratio is shown. The channel with the aspect ratio of 0.5 is found to be best among the channels studied including wavy and straight microchannels. A novel concept of secondary branches is introduced to wavy microchannel to take advantage of high pressure zone at crust. The branched wavy microchannel encouraged the secondary flow thus enhanced the macroscopic mixing. Due to disrupt of boundary layer development and its re-initialization, an improved thermal performance was achieved.
10
Mohand Kaci, Hakim, Thierry Lemenand, Dominique Della Valle, and Hassan Peerhossaini. "Enhancement of Turbulent Mixing by Embedded Longitudinal Vorticity: A Numerical Study and Experimental Comparison." In ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/fedsm2006-98367.
Full textAbstract:
This work concerns the characterization of turbulent flow underlying the mixing phenomenon in a static mixer-reactor HEV (high-efficiency vortex). An experimental test section made of a cylindrical tube equipped with seven rows of vortex generators was designed and constructed for this purpose. Each row has four vortex generators fixed symmetrically on the tube wall. This new type of mixer generates coherent structures in the form of longitudinal counter-rotative vortices. The resulting flow enhances radial mass transfer and thus facilitates the dispersion and mixing of the particles. The energy cost of this mixer is 1000 times less than that of other mixers for a given interface area [1, 2]. The aim of this work is to study numerically and experimentally the turbulence structure of the flow generated by the mixer, in particular the more energetic structures present in the base flow. Numerical simulations of the velocity distribution and turbulence levels inside the static mixer were conducted for various turbulence models by using the commercial mesh-generator code Gambit coupled with the CFD package Fluent. Attention was focused on the evolution and distribution of the rate of turbulent kinetic energy dissipation as the underlying mechanism for turbulent mixing. Experiments were carried out on the test section in a flow loop by using LDA. Mean and turbulent quantities were measured and numerical results were compared with experimental results. This study provides a basis for understanding the physical mechanisms in the mixing and homogenising of the flow and therefore the efficiency of the mixer.
Reports on the topic "Gambier Basin"
1
Lynch, G. Gambier Group of the Fire Lake area: Basement To the Georgia Basin. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/131180.
Full text
2
Lynch, J. V. G. Georgia Basin Project: Stratigraphy and Structure of Gambier Group Rocks in the Howe Sound - Mamquam River area, Southwest Coast Belt, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132496.
Full text