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| 1 | Study of the removal of paraquat from aqueous solution by biosorption onto Ayous (Triplochiton schleroxylon) sawdust 显示文摘 | Nanseu-Njiki C P Dedzo G K Ngameni E | 2010 | Journal of Hazardous Materials2010，179，13： | 1 |
| 2 | A realist evaluation of the management of a well-performing regional hospital in Ghana显示文摘 | Marchal B Dedzo M Kegels G | 2010 | BMC Health Services Research2010，10，： | 1 |
| 3 | Study of the removal of paraquat from aqueous solution by biosorption oner ayous ( triplochiton schleroxylon) sawdust显示文摘 | NAUSEU-NJIKI C P DEDZO G K NGAMENI E | 2010 | Journal of Hazardous Materials2010，179，13： | 1 |
| 4 | Study of the removal of paraquat from aqueous solution by biosorption onto Ayous (Triplochiton schleroxylon) sawdust显示文摘 | Nanseu-Njiki C.P Dedzo G.K Ngameni E | | 0，，1： | 1 |
| 5 | Identification of major sources controlling groundwater geochemistry in Mount Makabaï in the Far-North of Cameroon(the northernmost part of the Pan-African Belt)显示文摘The present work focuses on the volcanic basement rock geochemistry of Mount Makabaï(MarouaCameroon city)in relation to groundwater geochemistry.Investigations were centered on an approach involving an association of several methods such as geological cartography,hydrogeology,and geochemistry.Three rock samples,four disturbed soil samples,three undisturbed soil samples,and 20 samples of groundwater in 10 wells were collected during fieldwork and prepared for laboratory analyses.Bedrocks exhibit porphyritic,aphyric,and subaphiric textures.The phenocryst phases are mainly olivine,clinopyroxene,and plagioclase.Based on whole rock major element chemical compositions,the Makabaï samples,plotted on Na_(2)O+K_(2)O versus SiO_(2)diagram,are mugearite,hawaiite,and basalt.The ratio of(MgO+CaO)/(Na_(2)O+K_(2)O)exceeds unity and shows dominance of alkaline Earth metals(MgO:2.99-4.48%;CaO:6.19-9.80%)relatively to alkali metals(Na_(2)O:2.27-4.46%;K_(2)O:2.09-2.51%).Exchangeable base contents are high,mostly represented by Ca and Mg,whose contents vary from 14.6 to 35.28 cmol(+)kg^(-1)and from 3.28 to9.48 cmol(+)kg^(-1)respectively.The CECclayis likewise high,fluctuating between 116.80 and181.38 cmol(+)kg^(-1),values in line with the presence of 2:1 clay minerals represented in the study area by montmorillonite.In the water samples,the Ca2+and Na+contents are generally higher than K^(+)and Mg^(2+),reflecting the relative abundance of Na_(2)O and CaO oxides to K_(2)O and MgO oxides in rocks where different waters were sampled.The waters of Makabaï are acidic to neutral(6.3≤pH≤7.4)and weakly to highly mineralized(110.0≤EC≤1190.0μS/cm).Hydro-geochemical classification by using the Piper diagram revealed two water types:(1)CaMg-HCO_(3)(40%)and(2)CaMg-Cl or CaMg-SO4(60%).The average content of ions in all the analyzed samples was HCO_(3)^(-)>>NO_(3)^(-)>SO_(4)^(2-)>Cl-for anions and Ca^(2+)>>Mg^(2+)>Na^(+)>K^(+)for cations.Major mechanisms governing ionic constituents of groundwater in the study area are water-rock interactions,silicate weathering,and ion exchange. | Merlin GountiéDedzo DésiréTsozué Amidou Kpoumié Aubin Nzeugang Nzeukou | 2023 | Acta Geochimica2023，42，2： | 0 |
| 6 | Granitic inselbergs of Lara(Panafrican Chain,Far-North Cameroon):Assets for the implementation of geotourism in Mountainous region显示文摘The locality of Lara(Far-North Region,Cameroon)is made up of a pediplain strewn with coalescent plutons.The interaction of internal and external geological processes has contributed to transform the latter into inselbergs,whose geotouristic values are yet to be studied.Field and laboratory work enabled us to select the geomorphosites through their aesthetic value(particular size and shape)and,geomorphological and geological features.Moreover,it permitted to study and map the geomorphosites using Optic Microscope,Google Earth,GIS software and many other interfaces.Hence,four inselbergs have been selected and studied in the locality of Lara.The petrographic study of these inselbergs shows that granites are the main components of inselbergs and they present a fine to coarse-grained texture,materialized by quartz,micas,plagioclases and alkali feldspars(white and pink in colour).Inselbergs exhibit vertical and parallel networks of diaclases giving them a stratified appearance in some flanks.In addition,on some inselberg limbs and piedmonts,are built tors which contribute to their beauty.The tops of inselbergs,are embellished by several alluring pedestal rocks.On their flanks,shelters of various shapes and sizes(about 12 m length)have developed through the heaps of blocks field.Among the ten shelters selected,some have a fairly high cultural value as they are sacred places for the local population.Moreover,Lara's granitic inselbergs include enclaves(cognate enclaves and xenocrysts)that also significantly improve their geoheritage value.Inselbergs are landforms with high education and aesthetic value that attracted a larger local and foreign population of about 863 visitors between 2017-2019.They constitute an exceptional geoheritage that could attract more tourists in the locality of Lara;but the promotion of geotourism is needed through interpretative panels,marketing of geomorphosites through leaflets,web,media,and geotours,to mention a few. | ZANGMO TEFOGOUM Ghislain NOUHOU DAMA Zouyane Hyacinthe GOUNTIÉDEDZO Merlin MAFO DONGMO Irène | 2022 | Journal of Mountain Science2022，19，11： | 0 |
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