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Search Results: 1 - 10 of 191547 matches for " Comlan Achille Dèdjiho "
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Evaluation of the Opuntia dillenii as Natural Coagulant in Water Clarification: Case of Treatment of Highly Turbid Surface Water  [PDF]
Yéwêgnon Alima Esther Irma Nougbodé, Cokou Pascal Agbangnan, Alain Yaya Koudoro, Comlan Achille Dèdjiho, Martin Pépin A?na, Daouda Mama, Dominique Codjo Koko Sohounhloué
Journal of Water Resource and Protection (JWARP) , 2013, DOI: 10.4236/jwarp.2013.512133
Abstract:

This study was performed in laboratory scale and consisted of the using of aqueous Opuntia dillenii solution for the clarification of very turbid surface water (Turbidities varying between 186 NTU and 418 NTU). This plant from Cactaceae family was used as a natural coagulant for the different clarification tests. The preliminary phytochemical Screening of the powder of this plant showed that it contains tanins, saponins and mucilages. Flocculation and coagulation tests showed that Opuntia dillenii can be used in highly turbid water treatment. The removal efficiency varied from 89% to 93% for the turbidity and suspended solids, and from 4% to 15% for the obvious color in water when we used the optimum values of this natural coagulant (1 mL to 10 mL). The successive addition of this natural coagulant and the lime, gave a better elimination of turbidity and suspended solids, and a good reduction for the color. The removal efficiency of the turbidity and suspended solids became more than 95% and the one of the color between 67% and 94%.

Negative Impacts of the Practices of Acadjas on the Aheme Lake in Benin  [PDF]
Comlan Achille Dedjiho, Abdoukarim Alassane, Waris Chouti, Etienne Sagbo, Odilon Changotade, Daouda Mama, Moussa Boukari, Dominique C. K. Sohounhloue
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.54033
Abstract:

The objective of this study is to reveal the negative impacts of the practices of acadjas on the Aheme lake in Benin. Various material and methods were used for the measures of the physicochemical parameters such as: colorimetric HACH DR/890, the multiparameter WTW 340i and specific kits for the dosage of minerals. Also, the investigations were made with the resources by persons. It emerges from this study that the practices of acadjas asphyxiate and disturb the lake species. In fact, the concentrations in dissolved oxygen became very weak (1595 mg/L to 3740 mg/L), and the contents of nitrites (2, 25 mg/L to 14, 5 mg/L), suspension materials and turbidity are raised. The consequences both on the aquatic fauna and on the vegetation of the bank are worrying. The waterside populations are also threatened. Some actions in an attempt to regulate the practice of acadjas and promote reforestation of the lagoon bank need to be put in place.

Study of the Porosity of the Tiles out of Vibrated Mortar by Microstructural Analysis  [PDF]
Chakirou Akanho Toukourou, Gontrand Comlan Bagan, Adolphe D. Tchehouali, Alain Vautrin
Journal of Building Construction and Planning Research (JBCPR) , 2014, DOI: 10.4236/jbcpr.2014.22013
Abstract: The promotion and the popularization of the micro concrete tiles in any locality obligation with a will of durable development pass by a standard of quality, which is based on the results of scientific and technical research taking account of local specificities. This work proposes to study the porosity of the micro concrete by micro structural analysis. From this study, it comes out that the variation of porosity compared to the ratio of the fine gravels (s/(s + g)) is decreasing. Indeed more the granular ratio increases less low is the density of pores of material. The decrease of porosity according to the granular rate is not infinite; it tends towards a minimum starting from a rate of fine gravel close to 50%. The results obtained justify well the ratio of fine gravel practised by tileries.
“Chi dice donna dice…”. Le parole come strumento di infamia
Paolo DAchille
Storia delle Donne , 2011,
Abstract: This study is a linguistic approach to “gender oriented” insulting. After touching on some generic features of linguistic aggression (already censored by Medieval treaty texts on the sins of the language) and of identity and diversity expressed via words, the work points out the aspect of linguistic sexism which seem to set up a “negativity” of the “feminine” in itself. The central part of the work focuses on the Italian words which, as an act of detracting or direct insult, more often deal with women: “strega” and, above all, “puttana”. Of the latter it is remembered the wide range of synonyms (euphemistic or dysphemistic, denotative or connotative, cultivated or dialectal) one finds in the history of Italian up to the most recent foreignism (“escort”); some of them are analyzed as useful to semantic and socio-cultural considerations.
Frequency and Sociodemographic Factors Associated with Congenital Malaria at the Borgou Regional University Teaching Hospital (CHUD-B) in Benin in 2015  [PDF]
Noudamadjo Alphonse, Sagbo G. Gratien, Adededmy J. Didier, Agossou Joseph, Obossou A. Achille, Lokossou D. Saturnin
Open Journal of Pediatrics (OJPed) , 2017, DOI: 10.4236/ojped.2017.74025
Abstract: Background: Every minute a child dies from malaria in Sub-Saharan Africa. Despite this high infant and child mortality associated with malaria, congenital malaria is still not adequately understood as regarding its frequency, severity and management. The objective of this research work was to determine the frequency and identify the socio-demographic factors associated with the onset of congenital malaria at the gynecological and pediatric units of the Borgou Regional Teaching Hospital (CHUD-B) in Benin in 2015. Methods: This study was a cross-sectional survey with analytical purpose, based on exhaustive census performed from April to July 2015 on newborns delivered at CHUD-B and their mothers. The dependent variable was the presence of congenital malaria and the independent variables were socio-demographic characteristics. The data were processed and analyzed using Epi Info software version 7.0 with a significant threshold of 0.05. Findings: The frequency of congenital malaria in newborns was 19%. No sociodemographic factor was associated with congenital malaria. Conclusion: Nearly one in five newborns delivered at CHUD-B had congenital malaria. Due to malaria’s contribution to perinatal morbidity and mortality and subsequent receptivity of child victims to malaria, a longer study covering a whole year and focused on the determinants of
Characterization of Periodic Eigenfunctions of the Fourier Transform Operator  [PDF]
Comlan de Souza, David W. Kammler
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.34040
Abstract: We generalize this result to p1,p2-periodic eigenfunctions of F on R2 and to p1,p2,p3-periodic eigenfunctions of F on R3.


Characterization of Self Dual Lattices in R, R2 and R3  [PDF]
Comlan de Souza, David W. Kammler
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.510137
Abstract:

This paper shows that the only self dual lattices in R, R2, R3  are rotations of Z , Z×Z and Z×Z×Z.


Assessing Market-Sold Remedies in Lomé (Togo) for Hygienic Quality
Comlan de Souza,Yaovi Ameyapoh,Simplice D. Karou,Kokou T. Anani,Madje L. Kpodar,Mensavi Gbeassor
Biotechnology Research International , 2011, DOI: 10.4061/2011/572521
Abstract: Traditional concoctions sold in marketplaces are always assumed to be safe and efficient; however, they can be potentially toxic because of poor hygienic practices in plant processing or storage. The present study aimed to assess for the microbial quality of market-sold vegetable drugs in Lomé. Thus, a total of 209 plant remedies were collected in marketplaces and analysed for the presence of total aerobic bacteria, total coliforms, thermotolerant coliforms, Staphylococcus aureus, sulphite reducing bacteria, and yeast and moulds according to the French Association of Normalisation (AFNOR) guidelines. The results revealed that all formulations were contaminated by several microorganisms, excepted alcohol-based mixtures. According to AFNOR limits nonconform drugs were according to total aerobic bacteria (86.96% powders, 81.82% capsules, 66.67% tisanes, and 42.11% decoctions); to total coliforms (9.10% capsules, 8.70% powders and 1.75% decoction); to yeasts and moulds (77.78% ointments, 40% calcined powders, 36.36% capsules, and 23.91% powders). The microbiological analysis revealed that the majority of contaminating bacteria were gram positive catalase positive and oxidase positive bacilli. Quality control studies on market-sold remedies are currently needed to evaluate the microbial risk in consuming these products and they may allow the standardisation of plant processing and storage. 1. Introduction Plants have formed the basis of traditional medicine (TM) that was used thousands years ago by humans. Until today plant-based medicine continues to play a key role in health-care systems in many regions worldwide, principally in Africa where modern drugs are not affordable. Indeed, it has been estimated to 80% the percentage of people who only rely on TM for their primarily health care in Africa [1, 2]. Following leads supplied with traditional healers (TH), many plants have been screened in laboratories for biological activities. The majority of these studies conducted in vitro or on animal models often showed scientific rational behind plant usage with sometimes isolation of single pure compounds as active principle [3–5]. However, theses studies are focussed on plant extracts prepared by scientists after collecting plant materials them self. The extractions are made with organic solvents such as chloroform, methanol, or ethanol; sometimes they make decoctions in accordance with traditional practices [6–9]. Very few works have been conducted on vegetable drugs directly provided by TH, since the manufacturing of labelled and packaged herbal concoctions
Study of Pineapple Peelings Processing into Vinegar by Biotechnology
Seyram K. Sossou,Yaovi Ameyapoh,Simplice D. Karou,Comlan de Souza
Pakistan Journal of Biological Sciences , 2009,
Abstract: This study aimed to reduce post-harvest losses of pineapple local variety egbenana by the transformation of juice into vinegar through biotechnological process.Vinegar was produced through two successive fermentations: alcoholic and acetic fermentations. The alcohol fermentation was carried out at 30°C using yeast. Biomass, pH and Brix were evaluated daily during the fermentation. Acetic fermentation was carried out at 30°C using an acetic bacteria strain isolated from pineapple wine previously exposed to ambient temperature (28°C) for 5 days. Biomass, pH and acid levels were monitored each 2 days. The performance of acetic bacteria isolated was also assessed by studying their glucose and ethanol tolerance. The study allowed the isolation of yeast coded Saccharomyces cerevisiae (LAS01) and an acetic bacteria coded Acetobacter sp. (ASV03) both occurring in the pineapple juice. The monitoring of successive fermentations indicated that the pineapple juice with sugar concentration of 20 Brix, seeded with 106 cells of Saccharomyces cerevisiae (LAS01) for alcoholic fermentation for 4 days and afterwards seeded with 106 cells of Acetobacter sp. resulted in 4.5 acetic degree vinegar at Brix 5.3% and pH 2.8 for 23 to 25 days. The study of glucose tolerance of the strain of Acetobacter sp. showed that the growth of acetic bacteria was important in a juice with high concentration of sugar. However, the concentration of ethanol did not effect on the acetic bacteria growth. These results enabled on one hand to improve the manufacturing technology of vinegar from fruits and on the other hand to produce a starter of yeast and acetic bacteria strains for this production.
Non-trocar related major retroperitoneal bleeding during laparoscopic appendectomy
Haytham MA Kaafarani, Julian D'Achille, Roger A Graham
World Journal of Emergency Surgery , 2011, DOI: 10.1186/1749-7922-6-9
Abstract: Laparoscopic appendectomy (LA) has gained widespread acceptance in the last 2 decades. Multiple trials and meta-analyses have suggested that the laparoscopic approach offers patients a lower risk of surgical site infection, less postoperative pain, a shorter length of stay and earlier return to work when compared to open appendectomy (OA) [1-6]. Nonetheless, the same studies found higher rates of intra-abdominal abscesses and vascular injuries with LA. Most of the reported vascular injuries in laparoscopy occur during trocar or Veress needle insertions [7]. For patients over the age of 65, population-based studies have even suggested a lower mortality with LA [8]. As laparoscopy continues to evolve, it is essential that surgeons report unusual complications in an effort to raise awareness and guide management of any iatrogenic injury incurred during minimally-invasive procedures. We report the case of a patient who sustained a major non-trocar related retroperitoneal vascular injury during a routine LA.The patient is a 38 year old obese male, otherwise healthy, who presented with a 24 hour history of right lower quadrant pain and anorexia. His laboratory workup revealed a leukocytosis with eighty percent neutrophilia. On abdominal examination, the patient had localized tenderness lateral to McBurney's point with a positive psoas sign. A computed tomography scan confirmed the presence of a 16 mm enlarged appendix with signs of surrounding inflammation [Figure 1]. The patient was promptly taken to the operating room for a LA. A 12 mm periumbilical trocar was placed under direct vision followed by placement of a 5 mm suprapubic port and a 5 mm left lower quadrant port. The peritoneal cavity was insufflated with carbon dioxide to a pressure of 15 mm Hg. Upon exploration of the abdomen, the appendix was confirmed to be retrocolic in location, significantly inflamed, and adherent to the posterolateral abdominal wall. As the appendix was bluntly mobilized and freed from it
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