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Search Results: 1 - 10 of 446 matches for " Lansana Laho Diallo "
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A Case of Multiple Sclerosis to Gabon: Myth or Reality!  [PDF]
Ibrahima Aissata Camara, Lansana Laho Diallo, Philomène Kouna Ndouongo
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105592
Introduction: Multiple sclerosis is a neuro-inflammatory demyelinating disease rare in Africa south of the Sahara. Objective: The objective of this work is to describe multiple sclerosis in African black women from Gabon and to list the principles of care. Observation: We report the case of a Gab-onese girl, 21 years old, with no particular history, who had multiple scle-rosis following a decrease in visual acuity for six months associated with tingling and motor deficit of the lower right limb. Protein electrophoresis and cerebral magnetic resonance imaging (MRI) advocated multiple sclerosis. Conclusion: This observation highlights the fact that multiple sclerosis is a rare condition in black African countries and its discovery must always be considered as a diagnosis of elimination.
Post-Stroke Cognitive Disorders and Associated Factors in French Speaking West Africa, Benin Case  [PDF]
Dieu Donné Gnonlonfoun, Paul Macaire Ossou-Nguiet, Lansana Laho Diallo, Constant Adjien, Isaac Avlessi, Gérard Goudjinou, Octave Houannou, Dismand Houinato, Gilbert Dossou Avode
Neuroscience & Medicine (NM) , 2014, DOI: 10.4236/nm.2014.51006

Introduction: Cognitive disorders frequency arising after a cardio-cerebral vascular disease (stroke) is currently on the rise due to the ageing population and the increase in the number of survivors after stroke occurrence. Objective: Determining post-stroke cognitive decline and identifying associated factors. Method: It consists in a cross-sectional, prospective, descriptive and analytical study which was conducted from April 1 to August 31, 2013 in the Neurology Department of CNHU-HKM in Cotonou. The study involved 100 patients who have known stroke for at least the past 6 months and were all admitted and discharged later on. The disease survivors were re-contacted and examined again at home or at hospital. The cognitive decline (CD) was estimated by using a modified and adapted MMSE to suit our cultural era. Results: All patients were aged 58.9 years ± 13.6 years. Sex-ratio was 1.4. Cognitive decline frequency was 20%. Post-stroke cognitive decline frequency per sex was 11.6% and 8.4% respectively for females and males. Ischemia stroke patients had a higher cognitive decline (22.5%). 58.3% had severe CD. Moreover the CD frequency increased with time, from 16.7% in a year to 50% in 3 years. Total MMSE varied from 6 to 23 with 21 as median. From the unvaried analysis, the presence of sphincter disorders (1.26 [0.35-4.59], p = 0.004), consciousness disorders (15.67 [1.46-168], p

Stroke after Hospitalization: Assessment of Functional Prognosis through Disability and Dependency in CNHU-HKM, Cotonou, Benin  [PDF]
Dieu Donné Gnonlonfoun, Paul Macaire Ossou-Nguiet, Lansana Laho Diallo, Constant Adjien, Isaac Avlessi, Octave Houannou, Gérald Goudjinou, Jocelyn Acakpo, Dismand Houinato, Dossou Gilbert Avode
Neuroscience & Medicine (NM) , 2014, DOI: 10.4236/nm.2014.53017

Introduction: Stroke results in severe disability, with impacts that are sometimes socially, emotionally or professionally dramatic and also dramatic for the cost involved in care and treatment. Objective: Assessing the functional prognosis after hospitalization and identifying associated factors. Method: It consisted in a cross-sectional, prospective, descriptive and analytical study that was conducted from April 1 to August 31, 2013 in the Neurology Department of CNHU-HKM in Cotonou. It involved 100 patients who have known stroke for at least 6 months and were all admitted and discharged later on. The disease survivors were re-contacted and examined again at home or at hospital. Disability and dependency were then measured respectively with the Rankin score and Barthel index. The STATA/IC11.0 statistical software was used as the basis for data analysis. Unvaried and multi-varied analyzes helped to identify associated factors. Results: The overall disability and dependency rates were respectively 69% and 57.7%. And the highest rate of disability (38.8%) was observed between 50 and 60 years old. However, dependency prevalence was higher in subjects above 70 years old (37.3%). Regarding gender, the prevalence of disability was 59.2% in men and rather 41.5% in women. Predictors of disability and dependency were paralysis on admission (IC95% = 0.26 [0.77 - 0.92]; p = 0.036), obesity (IC95% = 0.26 [0.77 - 0.92]; p = 0.012) and monthly income lower than 70$US (IC95% = 0.05 [0.01 - 0.56]; p = 0.015). Conclusion: This study enabled us to assess the functional outcome of patients once discharged. The significance of motor deficit on stroke occurrence, obesity and the low monthly income were factors of poor functional prognosis.

Prevalence of Dementia and Its Associated Factors in Cotonou Teaching Hospital, Benin  [PDF]
Dieu Donné Gnonlonfoun, Constant Adjien, Paul Macaire Ossou-Nguiet, Lansana Laho Diallo, Octave Houannou, Jocelyn Acakpo, Gérard Goudjinou, Dismand Houinato, Dossou Gilbert Avode
Advances in Alzheimer's Disease (AAD) , 2014, DOI: 10.4236/aad.2014.32010
Abstract: Introduction: Dementia constitutes a public health hazard in developing countries. There is little data in the sub-Saharan region of African especially in Benin. Objective: Determining dementia hospitalization prevalence and identifying its associated factors in CNHU-HKM, Cotonou. Method: It was a cross-sectional, prospective, descriptive and analytical research conducted from October 2012 to July 2013 in the neurology department; it involved 251 patients aged 50 and above. Dementia screening was conducted using a modified and adapted Mini Mental Scale Examination (MMSE). Dementia clinical and etiological diagnoses were respectively conducted based on DMS-IV and HACHINSKI criteria. Results: Patients were averagely aged 60.9 ± 8.1. Sex ratio (Male/Female) was 1.07. Dementia prevalence was 8.8%. This rate increased proportionally with age, from 5.3% with patients aged below 60 to 12.7% with patients aged above 60. Degenerative dementia was the most predominant type (50%). Following multi-varied analysis, smoking (RC = 6.05 [IC 95% = 1.26 - 29.38] p = 0.0001) and stroke past records (RC = 6.05 [IC 95% = 1.26 - 29.38] p = 0.001) revealed to be the factors associated with dementia. Conclusion: This research showed that dementia affects a significant part of the aging population in CNHU-HKM. It is imperative to combat its associated factors so as to defuse its prevalence.
Extent of Reduction of the Fallow Period and Its Impact on Upland Rice Production in the Nongowa Chiefdom of Kenema District in Eastern Sierra Leone  [PDF]
Alie Kamara, Osman Sidie Vonu, John Lansana, John Lansana, Foday Saidu Sesay
Agricultural Sciences (AS) , 2016, DOI: 10.4236/as.2016.711073
Slash-and-burn agriculture is the common practice for upland rice intercropping system in Sierra Leone and it has been blamed for the loss of forest vegetation across the country. Shortening of the fallow period in the Eastern region of Sierra Leone has implications on agricultural food production and the persistence of the remaining tropical rainforest. This study was therefore undertaken to assess: 1) the extent of reduction of the fallow period in the Nongowa Chiefdom of Kenema District; 2) the causes of reduction in the fallow period; 3) farmers’ perception of the relevance of fallow period and the implications of reduction of fallow period on crop production. The study revealed a drastic reduction of the fallow period in the chiefdom with a mean of 3.8 years which falls far below the country mean fallow period of 8.8 years as estimated by FAO. Farmers pointed out that the reduction of the fallow period was as a result of land scarcity due to competing land uses such as large scale commercial agriculture, logging, mining, charcoal burning and expansion of settlements. Farmers agreed that a fallow period of at least 10 years is necessary for upland rice production. Farmers were aware of the impact of reduction of the fallow period on upland rice production and were able to estimate rice yields based on the age of the fallow. Also, farmers have attempted to adapt to the constraints posed by shorter fallow periods by selection of rice varieties to suit the length of the fallow periods.
Management of pheochromocytoma: Old ideas and new drugs
R Domi, H Laho
Nigerian Journal of Clinical Practice , 2012,
Abstract: Pheochromocytoma presents a challenge to the surgery team because of its clinical features and implications. The patient must be treated before the surgery until a stable hemodynamically state is achieved. The preoperative treatment includes α2 short acting adrenergic blocking and β blocker agents. The most crucial intraoperative moments are induction of anesthesia and hemodynamic oscillations. An adequate preoperative preparation, modern anesthetic drugs, good collaboration between the surgeons and the anesthesiologists, and postoperative care decrease the rate of complications and improve the outcome. This review aims to discuss all the possible pharmacological strategies of perioperative management of phoechromocytoma, focusing on new drugs and treatments.
Effect of Seasonality and Ecological Factors on the Prevalence of the Four Malaria Parasite Species in Northern Mali
Ousmane A. Koita,Lansana Sangaré,Hammadoun A. Sango,Sounkalo Dao,Naffet Keita,Moussa Maiga,Mamadou Mounkoro,Zoumana Fané,Abderrhamane S. Maiga,Klénon Traoré,Amadou Diallo,D. J. Krogstad
Journal of Tropical Medicine , 2012, DOI: 10.1155/2012/367160
Abstract: Background. We performed 2 cross-sectional studies in Ménaka in the Northeastern Mali across 9 sites in different ecological settings: 4 sites have permanent ponds, 4 without ponds, and one (City of Ménaka) has a semipermanent pond. We enrolled 1328 subjects in May 2004 (hot dry season) and 1422 in February 2005 (cold dry season) after the rainy season. Objective. To examine the seasonality of malaria parasite prevalence in this dry northern part of Mali at the edge of the Sahara desert. Results. Slide prevalence was lower in hot dry than cold dry season (4.94 versus 6.85%, =0.025). Gametocyte rate increased to 0.91% in February. Four species were identified. Plasmodium falciparum was most prevalent (74.13 and 63.72%). P. malariae increased from 9.38% to 22.54% in February. In contrast, prevalence of P. vivax was higher (10.31%) without seasonal variation. Smear positivity was associated with splenomegaly (=0.007). Malaria remained stable in the villages with ponds (=0.221); in contrast, prevalence varied between the 2 seasons in the villages without ponds (=0.004). Conclusion. Malaria was mesoendemic; 4 species circulates with a seasonal fluctuation for Plasmodium falciparum.
Modernization of Public Transports in Senegal: Case of Ticket Payment Method in Dakar Dem Dikk (3Ds) Buses  [PDF]
Sall Ousmane, Diallo Ousmane
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.67013
Abstract: Transport is one of the important keys of growth and socio-economic development for any country. Since 2005, Senegalese authorities have embarked on a vast fleet renewal program to modernize urban transport and professionalize the actors. The purpose of this paper is to sensitize people about the modernization of ticket payment method in Dakar Dem Dikk buses. To achieve this objective, a survey was done through the users and results have shown that the majority of participants agree to adopt the electronic ticketing smart card in public transport. This contactless payment technology is also recommended in commerce sector to facilitate and secure transactions.
Parasite Burden of Traditional Water Well Some Areas of the City of Peripheral Conakry
William Tchabo,Sylla Mangueet,Lansana Bangoura
Agricultural Journal , 2013, DOI: 10.3923/aj.2011.51.53
Abstract: In order to assess the impact of the parasitic water from traditional wells of some peripheral areas of Conakry town a prospective study has been conducted, covering 90 traditional wells of 6 overcrowded areas: Kagbelen, Km 36, Kountya, Gomboya, Sonfonia and Lansanaya. Parasitological tests performed on the waters from these wells by the modified method of Bailenger have shown an infestation in the wells observed 68% and a large difference in concentration and the diversity of the parasites identified (helminth ova, cysts, amoeba, bacteria, etc.). The average concentrations of parasite eggs (cestodes, nematodes and few protozoa) vary depending on well and according to the zone and this mainly due the density of the population and the nature of their socio-economic activities. The concentrations in eggs of helminths found in well waters observed greatly exceed the standards recommended the norms by WHO.
Electrical Instability in Pentacene Transistors with Mylar and PMMA/Mylar Gate Dielectrics Transferred by Lamination Process  [PDF]
Abdou Karim Diallo, Abdoul Kadri Diallo, Diouma Kobor, Marcel Pasquinelli
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.47125
Abstract: This study deals with electrical instability under bias stress in pentacene-based transistors with gate dielectrics deposited by a lamination process. Mylar film is laminated onto a polyethylene terephthalate (PET) substrate, on which aluminum (Al) gate is deposited, followed by evaporation of organic semiconductor and gold (Au) source/drain contacts in bottom gate top contact configuration (Device 1). In order to compare the influence of the semiconductor/dielectric interface, a second organic transistor (Device 2) which is different from the Device 1 by the deposition of an intermediate layer of polymethyl methacrylate (PMMA) onto the laminated Mylar dielectric and before evaporating pentacene layer is fabricated. The critical device parameters such as threshold voltage (VT), subthreshold slope (S), mobility (μ), onset voltage (Von) and Ion/Ioff ratio have been studied. The results showed that the recorded hysteresis depend on the pentacene morphology. Moreover, after bias stress application, the electrical parameters are highly modified for both devices according to the regimes in which the transistors are operating. In ON state regime, Device 1 showed a pronounced threshold voltage shift associated to charge trapping, while keeping the μ, Ioff current and S minimally affected. Regardless of whether Device 2 exhibited better electrical performances and stability in ON state, we observed a bias stress-induced increase of depletion current and subthreshold slope in subthreshold region, a sign of defect creation. Both devices showed onset voltage shift in opposite direction.
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