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Search Results: 1 - 10 of 955 matches for " Marcelle-Carole Pami Ngassam "
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Agro-Industrial Groundwater Quality Abuja FCT, Nigeria: An Evaluation for Urban and Peri-Urban (UPA) Agricultural Irrigation  [PDF]
Richard Ayuk II Akoachere, Omogbemi Omoloju Yaya, Areakpoh Thomson Eyong, Marcelle-Carole Pami Ngassam, Ernest Lytia Molua, Raymond Ndip Nkongho, Elizabeth Orock Ayuk, Tom Tabi Oben
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105698
Abstract:
From the declaration made by the African Mayors in Senegal; the Mayors and Municipal Health Officers of the Americas in Columbia; the City Executives of Cities and Local Governments of the World in Spain and in the context of the Millennium Development Goals MDG 1&7; there is a need for increased food production in urban and peri-urban areas UPA in the world. Sub-Saharan Africa faces more development challenges than any other major region of the world with most of the people living in slums, without access to adequate food, water, or sanitation. UPA contributes to increased food security, nutrition and livelihoods in a combination of ways giving access to consumer markets; less need for packaging, storage and transportation of food; potential agricultural-related jobs and incomes; non-market access to food for poor consumers; availability of fresh, perishable food. In Abuja FCT, 40% of the populations in UPA are farmers, a reason why the agricultural quality of its groundwater which is used for irrigation begs for our attention. 33% of the fresh vegetables in the Abuja Federal Capital Territory (FCT) are produced in Abuja UPA. In order to assess groundwater for agro-industrial suitability the following were used: Physicochemical parameters (pH, Temperature, Electrical Conductivity), Sodium Adsorption Ratio SAR, Permeability Index PI, Magnesium Adsorption Ratio MAR, Percent Sodium %Na, Kelly’s Ratio KR and Residual Sodium Carbonate RSC and the Wilcox diagram. pH ranged from, 4.8 - 7.9; EC, 13.4 - 1634 μS/cm; Temperature, 26℃ - 36.1℃ and TDS, 17.42 - 1094.78 mg/L.SAR (0.1 > SAR < 2.1), Percent Sodium (7.11 > %Na < 100), KR (0 > KR < 0.68), RSC (-9.8 > RSC < 0.55), PI (13.9 > PI < 932.4), and MAR (0 > MAR < 80.1). Comparing these values to WHO and the Nigerian Water Quality guidelines, SAR, %Na, KR, RSC, values are 100% suitable, while PI, 96.81% suitable, and MAR 56.46% unsuitable respectively for irrigational purposes in agriculture. The quality classifications of irrigation water based on the values: Sodium Adsorption Ratio SAR, Wilcox, Kelley Ratio KR, Residual Sodium Carbonate RSC, Permeability Index PI and Percent Sodium %Na; indicate that groundwater of Abuja FCT is suitable for irrigation purpose on all soil types and that the groundwater will not degrade the soil. However, United States Soil Salinity USSL Index of Abuja FCT groundwater fall in “very low to high salinity” and “low sodium hazard zone” and Magnesium Adsorption Ratio MAR indicates half of the groundwater as “not suitable”. Hence the groundwater in Abuja FCT should be used only on soils that are well drained.
Trace Metals in Groundwater of the South Eastern Piedmont Region of Mount Cameroon: Quantification and Health Risk Assessment  [PDF]
Richard Ayuk Akoachere, Edwin Ngwene Etone, Roy Lyonga Mbua, Marcelle Pami Ngassam, Simon Ngomba Longonje, Pius Mbu Oben, Regina Wotany Engome
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105327
Abstract:
The South Eastern Piedmont Region of Mount Cameroon is getting in-creasingly populated. Groundwater is the main resource for drinking in this area; hence, the quantification of trace metals, suitability and quality of the groundwater resources for drinking, domestic and agro-industrial uses is of public and scientific concern. In this study, 10 samples were collected from 10 sites in September 2017. Field measurement of physicochemical parameters and investigation of the levels of trace metal content in groundwater was determined using Inductively Coupled Plasma Mass Spectroscopy ICP-MS. R-mode statistical analysis has been done and traces metals elements correlated with the physicochemical parameters and cluster analysis PCA carried out. The paper also highlights and determines the average daily dose ADD, the carcinogenic risks CR and the non-carcinogenic risk hazard quotient HQ which yields the hazard indices HI. The general trend of mean trace metal concentration in the sampled groundwater was in the order of: Zn > Fe > Al > V > Mn > Cu > Cr > Ni > Pb > As > Co > Cd > Sb. All the groundwater risk indices; ADD, CR, HQ and HI were less than 1 in categories of insignificant health risk. The severity of metal toxicity is governed by several factors, such as dose, nutrition, age, and even life style. Therefore, this low trend might not guarantee the complete absence of human health risk. Generally, from risk assessment on trace metals using risk indices, the analyzed water samples might not be at an alarming health risk. However, due to an increasing level of environmental pollution that might be imposed by increasing human activity in this region, water sources might become a potential sink of contaminants; this is significant reason that makes constant monitoring, implementation and treatment of groundwater for drinking purposes obligatory.
Alpine and pre-Alpine metamorphic Rocks from Pro ara Mt. in northern Bosnia, Yugoslavia
Jakob Pami
Geologija , 1991,
Abstract: Two different granitic-metamorphic complexes can be distinguished in Pro ara Mt. The Hercynian complex consists mostly of cataclastic and phyllonitized gneissgranites and amphibolites. Rocks of the Alpine metamorphic complex are much more widespread. They were formed under low- and very low-grade metamorphism from surrounding Upper Cretaceous sediments. The gradational changes can be traced in pelitic, psammitic, carbonate, and basic igneous rocks. UpperCretaceous age both of original sediments and low-grade metamorphic rocks is supported by mi ero fossils.Alpine metamorphism of Pro ara Mt. can be related to subduction processes.
Hercynian granites and metamorphic rocks from the Mts. Papuk, Psunj, Krndija, and the Surroundi ng basement of the Pannonian Basin in Slavonija (Northern Croatia, Yugoslavia)
Jakob Pami,Marvin Lanphere
Geologija , 1991,
Abstract: Hercynian crystalline complex of the Slavonian Mountains and surrounding basement of the Pannonian Basin comprises the following units: (1) anchimetamorphic and very low-grade metamorphic rocks with metabasic igneous rocks, (2)progressive metamorphic succession of greenschist and amphibolite facies, (3),migmatites, (4) S-type granitoids, and (5) I-type granitoids.In the paper is presented a petrological interpretation for each of the mentioned unit which is based on chemical composition of rock-forming minerals,petrographical and geochemical data including major and trace element contents,REE, and O and Sr isotopie composition.Numerous geochemical and petrochemical diagrams are presented for allthese rock groups as the basis for detailed genetic and geotectonic considerations.
ALPINE MAGMATIC-METALLOGENIC FORMATIONS OF THE NORTHWESTERN AND CENTRAL DINARIDES
Jakob Pami,Ivan Jurkovi?
Rudarsko-Geolo?ko-Naftni Zbornik , 1997,
Abstract: In the paper are presented basic geological, petrologieca1, geochemi-cal and mineral deposit data for five main magmatic-metallogenic formations of the northwestern and central Dinarides: (l)The Permo Triassic rifting related andesite-diorite formations; (2) The Jurassic-Lower Cretaceous accretionary (ophiolite) formations; (3) The Upper Cretaceous-Paleogene subduction related basalt-rhyohite formations; (4) The Paleogene collisional granite formations, and (5) The Oligo-cene-Neogene postsubduction andesite formations.All these magmatic-metallogenic formations originated in different geotectonic settings during the Alpine evolution of the Dinaridic parts of thc Tethys and the postorogenic evolution of the Paratethys and the Pannonian Basin, respectively.
Use of SFC in Extraction of Adaptogens from Brazilian Plants  [PDF]
Marcelle Fernanda Carulo
American Journal of Analytical Chemistry (AJAC) , 2012, DOI: 10.4236/ajac.2012.312A129
Abstract:

Bioactive substances found in plants are very interesting because of their importance in medicine and foods. Species of Pfaffia genre is common in Brazil, the largest center of collection of this species. Statistics report that 11,000 tons of roots and other plants were exported in 2011. Due to the large market demand, a growth of 10% per year is estimated. One of the promising areas of study involves the supercritical fluid extraction of active compounds present in plants. The current goal is to reduce dependence on foreign markets. The extraction of bioactive compound known as Beta-Ecdysone has been studied. Statistics show that profits of exports coming from the raw material is almost ten times smaller than the extract itself. Considering this fact, we emphasize the importance of an alternative method of industrial extraction in Brazil using supercritical technology, which proves to be environmentally safe.

Renaturalizing Floodplains  [PDF]
Marcelle Nardelli Baptista, Ricardo Valcarcel
Journal of Water Resource and Protection (JWARP) , 2018, DOI: 10.4236/jwarp.2018.105029
Abstract: This manuscript analyzes and discusses viewpoints concerning the renaturalization of floodplains as an instrument of management in large catchments, using natural flood defense schemes. Schemes consider the differentiated supply of ecosystemic services based on river channel/floodplain interactions. Conventional structural methods used to prevent flooding (e.g., longitudinal dikes) are increasingly showing themselves to be less efficient with regard to advances in the problems of environmental management of the territory, especially when combined with extreme events, where the importance of perfecting strategies for harmonizing duly controlled floodable areas and water retention can be seen. Natural flood risk reduction measures are part of a holistic solution for sustainable management of flood risk, conservation of nature, water quality and green economy. They rely upon the inherent ability of floodplains to retain water in the basin, and this can delay and reduce peak flows.
The Brazilian business and growth cycles
Chauvet, Marcelle;
Revista Brasileira de Economia , 2002, DOI: 10.1590/S0034-71402002000100003
Abstract: this paper uses several produceres to date and analyse the brazilian business and growth cycles. in particular, a markov switching model is fitted to quarterly and annual real production data. the smoothed probabilities of the markov states are used as predictive rules to define different phases of cyclical fluctuations of real brazilian production. the results are compared with different non-parametric rules. all methods implemented yield similar dating and reveal asymmetries across the different states of the brazilian business and growth cycles, in which slowdowns and recessions are short and abrupt, while high growth phases and expansions are longer and less steep. the resulting dating of the brazilian economic cycles can be used as a reference point for construction and evaluation of the predictive performance of coincident, leading, or lagging indicators of economic activity. in addition, the filtered probabilities obtained from the markov switching model allow early recognition of the transition to a new business cycle phase, wich can be used, for example, for evaluation of the adequate strength and timing of countercyclical policies, for reassessment of projected sales or profits by businesses and investors, or for monitoring of inflation pressures.
Access to an Effective Remedy in European Asylum Procedures
Marcelle Reneman
Amsterdam Law Forum , 2008,
Abstract: In this contribution the author tries to identify the meaning and content of the Community principles of effectiveness and effective judicial protection with regard to the right of access to an effective remedy in the context of the Common European Asylum System. With this purpose the relevant case-law by the Court of Justice, the European Court on Human Rights, the Committee against Torture and the Human Rights Committee will be discussed. On the bases of this case-law some general conclusions will be drawn regarding the right of access to an effective remedy and the lawfulness of certain limitations of this right, such as time-limits or the immediate enforcement of expulsion measures.
The Brazilian business and growth cycles
Chauvet Marcelle
Revista Brasileira de Economia , 2002,
Abstract: This paper uses several produceres to date and analyse the Brazilian business and growth cycles. In particular, a Markov switching model is fitted to quarterly and annual real production data. The smoothed probabilities of the Markov states are used as predictive rules to define different phases of cyclical fluctuations of real Brazilian production. The results are compared with different non-parametric rules. All methods implemented yield similar dating and reveal asymmetries across the different states of the Brazilian business and growth cycles, in which slowdowns and recessions are short and abrupt, while high growth phases and expansions are longer and less steep. The resulting dating of the Brazilian economic cycles can be used as a reference point for construction and evaluation of the predictive performance of coincident, leading, or lagging indicators of economic activity. In addition, the filtered probabilities obtained from the Markov switching model allow early recognition of the transition to a new business cycle phase, wich can be used, for example, for evaluation of the adequate strength and timing of countercyclical policies, for reassessment of projected sales or profits by businesses and investors, or for monitoring of inflation pressures.
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