Investigating the metal contamination status from recycling e-waste sites from Dakar, Senegal.

In Senegal, processes employed for recycling e-wastes result in release of so-called heavy metals in the environment. In this study, the metal distribution and concentrations of soils collected from four e-waste recycling areas located in the Dakar area are presented. Measurements are performed using portable X-ray fluorescence and laser-induced breakdown spectroscopy (LIBS) to obtain a complete analysis of the soil, including major and trace elements (i.

Rabies burden in Côte d'Ivoire.

Background: In Côte d'Ivoire, just as in the majority of developing countries, rabies cases are underestimated. The official data are based on passive surveillance studies which cannot provide true estimates. Therefore, the economic and health burden of rabies is underestimated.

RACINE2.2: A Software Application for Processing and Mapping Spatial Distribution of Root Length Density and Potential Root Extraction Ratio from Root Counts on Trench Profiles.

A method has been developed to measure root intersection density (RID) on a trench-profile in field conditions. Here we describe how 2D spatial distribution mapping of RID can be processed and converted into root length density (RLD) and root distances (ARD) using a new freeware named RACINE2.2.

Experimental Study of a Heat Pump for Simultaneous Cooling and Desalination by Membrane Distillation.

Heat pump systems can simultaneously produce cooling energy for space cooling in hotels, office and residential buildings and heat for desalination using membrane distillation (MD). The MD technique uses a heat input at a temperature compatible with the levels of heat pump condensers (<60 °C). A heat pump prototype coupled with an air-gap membrane distillation unit was constructed and tested.

Spillover, hybridization, and persistence in schistosome transmission dynamics at the human-animal interface.

Zoonotic spillover and hybridization of parasites are major emerging public and veterinary health concerns at the interface of infectious disease biology, evolution, and control. Schistosomiasis is a neglected tropical disease of global importance caused by parasites of the genus, and the spp. system within Africa represents a key example of a system where spillover of animal parasites into human populations has enabled formation of hybrids.

An overview of bacterial meningitis epidemics in Africa from 1928 to 2018 with a focus on epidemics "outside-the-belt".

Background: Bacterial meningitis occurs worldwide but Africa remains the most affected continent, especially in the "Meningitis belt" that extends from Senegal to Ethiopia. Three main bacteria are responsible for causing bacterial meningitis, i.e.

(3)-4-[(Naphthalen-1-yl)amino]-pent-3-en-2-one hemihydrate.

The title compound, CHNO·0.5HO, was prepared from α-naphthyl-amine and 2,4-penta-nedione in a 1:1 ratio. An intra-molecular N-H⋯O hydrogen bond in the -naphthyl-pent-3-en-2-one mol-ecule involving the amine and carbonyl groups strengthens the structure.

Snakebite frequencies and envenomation case management in primary health centers of the Bobo-Dioulasso health district (Burkina Faso) from 2014 to 2018.

Background: Snakebite envenomation is a significant public health problem in Burkina Faso. Our study describes the epidemiological and therapeutic aspects of snakebite cases at primary health centers in Houet Province, which is located in the western area of Burkina Faso.

Methods: We conducted a retrospective study of 664 snakebite cases occurring at 10 primary health centers in Houet Province from January 2014 to December 2018.

Tetra-ammonium μ-ethyl-enedi-amine-tetra-acetato-1κ ,,':2κ '',','''-bis-[trioxidotungstate(VI)] tetra-hydrate.

The title compound, (NH)[W(CHNO)O]·4HO, was obtained from a mixture of tungstic acid, ammonia and ethyl-enedi-amine-tetra-acetic acid (Hedta) in a 2:4:1 ratio. The anion of the complex contains two WO units and one bridging edta ligand. Each central metal atom is tridentately coordinated by nitro-gen and two carboxyl-ate groups of the edta ligand, together with the three oxido ligands, producing a distorted octa-hedral coordination environment around each tungsten atom.

[Factors associated with scale-up human papillomavirus (HPV) vaccine in Senegal: a case-control survey of parents].

Introduction: after a pilot phase, Senegal is the first country in West Africa to introduce cervical cancer vaccine into its Expanded Program on Immunization. Despite the gratuity and availability of the vaccination, coverage was low. The purpose of this study was to identify factors associated with HPV vaccination coverage in girls .

MALDI-TOF mass spectrometry for the identification of freshwater snails from Senegal, including intermediate hosts of schistosomes.

Freshwater snails of the genera Biomphalaria, Bulinus, and Oncomelania are intermediate hosts of schistosomes that cause human schistosomiasis, one of the most significant infectious neglected diseases in the world. Identification of freshwater snails is usually based on morphology and potentially DNA-based methods, but these have many drawbacks that hamper their use. MALDI-TOF MS has revolutionised clinical microbiology and has emerged in the medical entomology field.

A new organic-inorganic compound, ethyl-enedi-ammonium hexa-chlorido-stannate(IV) -anisaldehyde disolvate.

The asymmetric unit of the title organic-inorganic hybrid complex [systematic name: ethane-1,2-diaminium hexa-chlorido-stannate(IV)-4-meth-oxy-benz-alde-hyde (1/2)], (CHN)[SnCl]·2CHO, contains one half of an ethyl-enedi-ammonium cation, one half of an [SnCl] anion and one -anisaldehyde mol-ecule. Both the organic cation and the quasi-regular octa-hedral inorganic anion are located about inversion centres. The organic cations and [SnCl] anions lie in layers parallel to the plane with -anisaldehyde mol-ecules occupying the space between the layers.

Binary vanadium pentoxide carbon-graphene foam composites derived from dark red hibiscus sabdariffa for advanced asymmetric supercapacitor.

The development of advanced electrode materials derived from biomass for the next generation of energy storage devices, such as supercapacitors with high specific energy and specific power coupled with a good cycle stability, is required to meet the high demand for electric vehicles and portable devices. In this study, sustainable binary vanadium pentoxide carbon-graphene foam composites (VO@C-RHS/GF) were synthesized using a solvothermal method. The X-ray diffraction, Raman and FTIR techniques were used to study the structural properties of the composites (VO@C-RHS/20 mg GF and VO@C-RHS/40 mg GF).

Effectiveness of seasonal malaria chemoprevention (SMC) treatments when SMC is implemented at scale: Case-control studies in 5 countries.

Background: Seasonal malaria chemoprevention (SMC) has shown high protective efficacy against clinical malaria and severe malaria in a series of clinical trials. We evaluated the effectiveness of SMC treatments against clinical malaria when delivered at scale through national malaria control programmes in 2015 and 2016.

Methods And Findings: Case-control studies were carried out in Mali and The Gambia in 2015, and in Burkina Faso, Chad, Mali, Nigeria, and The Gambia in 2016.

[Meckel's diverticulitis by ascaris in children: about a case].

We here report the case of a 4-year-old male child presenting with congenital umbilical bud that, recently, had begun to bleed. Physical examination showed pinkish umbilical bud with blood stains but without any fistula, measuring about 1,5 cm in diameter. Abdominal ultrasound was performed, which suggested urachal sinus.

Development of an Illumina-based analysis method to study bradyrhizobial population structure-case study on nitrogen-fixing rhizobia associating with cowpea or peanut.

Bradyrhizobia are Gram-negative soil bacteria that regroup a growing number of species. They are widespread in nature and recovered from various biomes that may be explained by a high genetic diversity in this genus. Among the numerous metabolic properties they can harbor, the nitrogen fixation resulting from the association with plants among which important crop legumes (soya bean, peanut, cowpea …) is of great interest, notably in a context of sustainable development.

Hybridized Zoonotic Infections Result in Hybridized Morbidity Profiles: A Clinical Morbidity Study amongst Co-Infected Human Populations of Senegal.

Hybridization of infectious agents is a major emerging public and veterinary health concern at the interface of evolution, epidemiology, and control. Whilst evidence of the extent of hybridization amongst parasites is increasing, their impact on morbidity remains largely unknown. This may be predicted to be particularly pertinent where parasites of animals with contrasting pathogenicity viably hybridize with human parasites.

[Paratesticular rhabdomyosarcoma: about a case and literature review].

We here report a case of embryonal paratesticular rhabdomyosarcoma in a young adult. The purpose of this study is to highlight this uncommon histological type of tumor in this age group, the rapid evolution of the lesion and the challenges of managing it in our context.

[Unadjusted and customized fetal growth curves: a comparative study in a sub-Saharan population].

The purpose of this study was to compare the unadjusted EPOPé M0 curve with the customized Gardosi curve in the diagnosis of small-for-gestational-age (SGA) fetuses in a sub-Saharan population. We compared the Gardosi et al. and EPOPé M0 classifications.

Successful artificial reefs depend on getting the context right due to complex socio-bio-economic interactions.

Artificial reefs (ARs) are one of the most popular means of supporting marine ecosystem conservation and coastal fisheries, particularly in developing countries. However, ARs generate complex socio-bio-economic interactions that require careful evaluation. This is particularly the case for ARs outside no-take zones, where fish might be subject to enhanced exploitation due to easier catchability.