Blow-up for Semidiscretizations of some Semilinear Parabolic Equations with a Convection Term

This paper concerns the study of the numerical approximation for the following parabolic equations with a convection termwhere p > 1.We obtain some conditions under which the solution of the semidiscrete form of the above problem blows up in a finite time and estimate its semidiscrete blow-up time. We also prove that the semidiscrete blow-up time converges to the real one, when the mesh size goes to zero. Finally, we give some numerical experiments to illustrate ours analysis

NOUVELLE TECHNIQUE DE TRANSFORMATION DE LA PULPE DE MANIOC (Manihot esculenta CRANTZ) SOUS FORME DE GRANULES CONSERVABLES SUR UNE LONGUE PERIODE

To solve the problem of conservation of fresh cassava, native cassava granules have been produced with three cultivars: bonoua, soglo and yacé. These granules made by drying the crushed, pressed and packaged in polyethylene bags 160 µm thick has been stored for two years at ambient temperature. The biochemical and microbiological analyses carried on the granules before and after preservation for two years have shown no significant change on the biochemical composition. These granules contain 10% humidity,84 % total carbohydrate, of which 55 % starch, 29 % total sugars including 20 % reducing sugars. These granules have been stable for the point of view of biochemical composition and the microbial content and did not contain cyanhydric acid. No browning reaction has been observed during preservation hence the granules have kept the colour of fresh cassav

Relative performance of indoor vector control interventions in the Ifakara and the West African experimental huts.

BACKGROUND: West African and Ifakara experimental huts are used to evaluate indoor mosquito control interventions, including spatial repellents and insecticides. The two hut types differ in size and design, so a side-by-side comparison was performed to investigate the performance of indoor interventions in the two hut designs using standard entomological outcomes: relative indoor mosquito density (deterrence), exophily (induced exit), blood-feeding and mortality of mosquitoes. METHODS: Metofluthrin mosquito coils (0.00625% and 0.0097%) and Olyset® Net vs control nets (untreated, deliberately holed net) were evaluated against pyrethroid-resistant Culex quinquefasciatus in Benin. Four experimental huts were used: two West African hut designs and two Ifakara hut designs. Treatments were rotated among the huts every four nights until each treatment was tested in each hut 52 times. Volunteers rotated between huts nightly. RESULTS: The Ifakara huts caught a median of 37 Culex quinquefasciatus/ night, while the West African huts captured a median of 8/ night (rate ratio 3.37, 95% CI: 2.30-4.94, P  4-fold higher mosquito exit relative to the West African huts (odds ratio 4.18, 95% CI: 3.18-5.51, P < 0.0001), regardless of treatment. While blood-feeding rates were significantly higher in the West African huts, mortality appeared significantly lower for all treatments. CONCLUSIONS: The Ifakara hut captured more Cx. quinquefasciatus that could more easily exit into windows and eave traps after failing to blood-feed, compared to the West African hut. The higher mortality rates recorded in the Ifakara huts could be attributable to the greater proportions of Culex mosquitoes exiting and probably dying from starvation, relative to the situation in the West African huts

Composition phytochimique, nutritionnelle et activité antioxydante des feuilles de baobab de Côte d’Ivoire

Objectif: Ce travail vise à étudier la variabilité des nutriments et de l’activité antioxydante des feuilles matures de baobab récoltées dans quatre différentes localités (Abidjan, Bouaké, Boundiali et Man) de la Côte d’Ivoire.Méthodologie et résultats: Les teneurs en nutriments et l’activité antioxydante des feuilles ont été déterminées par dosages spectrophotométriques. L’analyse des résultats a montré que tous les composés dosés sont présents dans les feuilles de baobab. Les teneurs de ces composés varient d’une localité à une autre. Les feuilles de la localité d’Abidjan contiennent plus de lipides, protéines et calcium que les feuilles des autres localités d’étude. Par contre, les fibres, les glucides totaux et le magnésium sont plus abondants dans les feuilles de Boundiali. Par ailleurs, le potassium, le phosphore, les polyphénols, le zinc, le fer et les flavonoïdes sont plus importants dans les feuilles de Bouaké et Man. Aussi, les feuilles de Bouaké présentent la meilleure capacité antioxydante.Conclusion et applications: Cette étude a permis de montrer que la composition phytochimique, nutritionnelle et l’activité antioxydante des feuilles de baobab de Côte d’Ivoire varient d’une localité à une autre. De même, les feuilles de baobab ont une bonne teneur en protéines, en minéraux et en phytonutriments ainsi qu’une bonne capacité antioxydante. De ce fait, la consommation régulière de sauce à base de feuilles de baobab serait bénéfique pour la population ivoirienne pour la lutte contre la malnutrition et également pour prévenir le stress oxydatif.Mots clés: Adansonia digitata ; feuilles ; composition biochimique ; activité antioxydanteEnglish Title: Phytochemical, nutritional composition and antioxidant activity of baobab leaves of Cote d’IvoireEnglish AbstractObjective: The aim of this work is to study the variability of nutrients and antioxidant activity of mature native baobab leaves harvested from four different localities (Abidjan, Bouake, Boundiali and Man) of Cote d'Ivoire.Methodology and Results: Nutrient contents and antioxidant activity of the leaves were determined by spectrophotometric assays. The contents of these compounds varied from one locality to another. The leaves of the locality of Abidjan contained more lipids, proteins and calcium than the other leaves. In contrast, fiber, total carbohydrate and magnesium contents are abundant in Boundiali leaves than leaves of other localities. In addition, potassium, phosphorus, polyphenols, zinc, iron and flavonoids contents are highest in the leaves of Bouake and Man. The leaves of Bouake also have the best antioxidant capacity.Conclusion and application: This study showed that the phytochemical, nutritional compounds and antioxidant activity of baobab leaves of Cote d'Ivoire varies from one locality to another. Likewise, baobab leaves have a good protein, mineral and phytonutrient content as well as a good antioxidant capacity. As a result, the regular consumption of baobab leaf sauce would be beneficial for the Ivorian population to fight against malnutrition and also to prevent oxidative stress.Keywords: Adansonia digitata; leaves; biochemical composition; antioxidant activit

NOUVELLE TECHNIQUE DE TRANSFORMATION DE LA PULPE DE MANIOC (Manihot esculenta CRANTZ) SOUS FORME DE GRANULES CONSERVABLES SUR UNE LONGUE PERIODE

To solve the problem of conservation of fresh cassava, native cassava granules have been produced with three cultivars: bonoua, soglo and yacé. These granules made by drying the crushed, pressed and packaged in polyethylene bags 160 µm thick has been stored for two years at ambient temperature. The biochemical and microbiological analyses carried on the granules before and after preservation for two years have shown no significant change on the biochemical composition. These granules contain 10% humidity,84 % total carbohydrate, of which 55 % starch, 29 % total sugars including 20 % reducing sugars. These granules have been stable for the point of view of biochemical composition and the microbial content and did not contain cyanhydric acid. No browning reaction has been observed during preservation hence the granules have kept the colour of fresh cassav

A complicated steroid resistant nephrotic syndrome: a large intracardiac thrombus with bilateral distal embolization

Nephrotic syndrome (NS) is a consequence of the reduced ability of the glomerulus barrier to exclude proteins of intermediate size and other macromolecules from urine. Albumin and proteins that modulate the coagulation cascade are among the substances eliminated in urine. This is responsible of thromboembolic complication. The incidence of this extra renal complication is probably underestimated because of asymptomatic thromboembolic events. We report the case of a 23 years old man followed up for an idiopathic nephrotic syndrome since childhood who presented a large intracardiac thrombus complicated by distal embolisation of his two lower limbs, successfully treated by fogartisation-embolectomy and oral anticoagulation

Ethnobotanic survey of the galactagogue plants used by Brong and Koulango, two indigenous peoples in Gontougo region/Côte d’Ivoire

This study aims to inventory plants and traditional medicinal recipes used by the population of Tanda (Gontougo region, Côte d’Ivoire) to boost milk production in women.Using a questionnaire, the methods consisted in carrying out a survey near the traditional medicine actors of 15 localities. Among 47 actors of traditional medicine aged from 34 to 80 years investigated, 70.21 % were women. These women had more knowledge on the galactagogue plants than the men (29.79 % of the actors). They were represented by matrons, specialists in lactation, healers and saleswomen of medicinal plants. Among about fifteen listed galactagogue plants, Euphorbia hirta (Euphorbiaceae) was the most used plant. Leaves represented the majority of the medicinal preparations (73.33 %). These preparations were in 66.67 % of the cases associated with various other biological or mineral ingredients (pepper, meat, vegetables, ash, kaolin…). The direct application of crushings on mammary glands (cutaneous way) by friction constituted the principal route of administration (66.67 % of the medical receipts).Traditional medicine actors of the town of Tanda are actively interested in the search of solutions to the lacteal secretion issues which occur in the breast-feeding mothers. They have about fifteen medicinal plants which enable them to stimulate the production of maternal milk when a need is expressed

Management of biomedical waste in two medical laboratories in Bangui, Central African Republic

Introduction: This cross-sectional study was conducted among 73 healthcare workers in two laboratories in Bangui, using self administered questionnaire and scale grid to get information on knowledge and practice of management biomedical waste (BMW). Methods: Data were analyzed using SPSS software (version 20). Fisher chi-square test was used to investigate whether distributions of categorical variables differ from one another. Results: Findings from this study shows that; a gap in legal framework on BMW. Seventy percent of waste generated was infectious. Segregation and color coding was inappropriate. Only 29% of the services used safety boxes. Transport of BW is manual. About 64 % of respondents have not received training on BMW. 44 of 73 (60%) didn’t know certain diseases related to poor waste management and transmission routes. The surface technicians had significantly better knowledge about tetanus vaccine than the medical-technical staff (χ2 = 4.976, p=0.047). They had also a significantly higher risk of exposure to accidents due to waste handling than medical-technical (χ2=10.276, p=0.009). The 30-39 age group had a significantly higher risk of exposure to accidents related to the BMW compared to other ages groups (χ2=11.206, p=0.026).The National Laboratory personal has significantly higher knowledge about BCG and Meningitis vaccine than the Laboratory of Community Hospital personal (χ2=10.954, p=0.002 and χ2=4.304, p=0.05). Conclusion: BMW was poor. Collaboration between the City Hall and sanitation services with the support of partners will greatly reduce the risk of exposure faced by laboratory personnel and the population.Pan African Medical Journal 2016; 2

Pharyngeal Carriage of Beta-Haemolytic Streptococcus Species and Seroprevalence of Anti-Streptococcal Antibodies in Children in Bouaké, Côte d’Ivoire

The pharynx of the child may serve as a reservoir of pathogenic bacteria, including beta-haemolytic group A streptococci (GAS), which can give rise to upper airway infections and post-streptococcal diseases. The objective of this study was to determine the prevalence of beta-haemolytic Streptococcus spp. in pharyngeal samples stemming from children aged 3–14 years in Bouaké, central Côte d’Ivoire. Oropharyngeal throat swabs for microbiological culture and venous blood samples to determine the seroprevalence of antistreptolysin O antibodies (ASO) were obtained from 400 children in March 2017. Identification was carried out using conventional bacteriological methods. Serogrouping was performed with a latex agglutination test, while an immunological agglutination assay was employed for ASO titres. The mean age of participating children was 9 years (standard deviation 2.5 years). In total, we detected 190 bacteria in culture, with 109 beta-haemolytic Streptococcus isolates, resulting in an oropharyngeal carriage rate of 27.2%. Group C streptococci accounted for 82.6% of all isolates, whereas GAS were rarely found (4.6%). The ASO seroprevalence was 17.3%. There was no correlation between serology and prevalence of streptococci (p = 0.722). In conclusion, there is a high pharyngeal carriage rate of non-GAS strains in children from Bouaké, warranting further investigation