Kinshasa, Democratic Republic of the Congo
Kinshasa, Democratic Republic of the Congo

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PubMed | National Pedagogy University, United International University Dhanmondi, University of Kinshasa, University of GenevaGeneva and University of Geneva
Type: | Journal: Frontiers in microbiology | Year: 2016

Data concerning the occurrence of emerging biological contaminants such as antibiotic resistance genes (ARGs) and fecal indicator bacteria (FIB) in aquatic environments in Sub-Saharan African countries is limited. On the other hand, antibiotic resistance remains a worldwide problem which may pose serious potential risks to human and animal health. Consequently, there is a growing number of reports concerning the prevalence and dissemination of these contaminants into various environmental compartments. Sediments provide the opportunity to reconstruct the pollution history and evaluate impacts so this study investigates the abundance and distribution of toxic metals, FIB, and ARGs released from hospital effluent wastewaters and their presence in river sediments receiving systems. ARGs (bla TEM, bla CTX-M, bla SHV, and aadA), total bacterial load, and selected bacterial species FIB [Escherichia coli, Enterococcus (ENT)] and species (Psd) were quantified by targeting species specific genes using quantitative PCR (qPCR) in total DNA extracted from the sediments recovered from 4 hospital outlet pipes (HOP) and their river receiving systems in the City of Kinshasa in the Democratic Republic of the Congo. The results highlight the great concentration of toxic metals in HOP, reaching the values (in mg kg(-1)) of 47.9 (Cr), 213.6 (Cu), 1434.4 (Zn), 2.6 (Cd), 281.5 (Pb), and 13.6 (Hg). The results also highlight the highest (P < 0.05) values of 16S rRNA, FIB, and ARGs copy numbers in all sampling sites including upstream (control site), discharge point, and downstream of receiving rivers, indicating that the hospital effluent water is not an exclusive source of the biological contaminants entering the urban rivers. Significant correlation were observed between (i) all analyzed ARGs and total bacterial load (16S rRNA) 0.51 to 0.72 (p < 0.001, n = 65); (ii) ARGs (except bla TEM) and FIB and Psd 0.57 < r < 0.82 (p < 0.001, n = 65); and (iii) ARGs (except bla TEM) and toxic metals (Cd, Cr, Cu, and Zn) 0.44 to 0.72, (p < 0.001, n = 65). These findings demonstrate that several sources including hospital and urban wastewaters contribute to the spread of toxic metals and biological emerging contaminants in aquatic ecosystems.


Shchokin V.,National University of Management | Tkachuk V.,National Pedagogy University
Metallurgical and Mining Industry | Year: 2014

The results of development of concept of automatization of agglomerative production on the base of application of adaptive Neuro-Fuzzy systems on the bottom level of automatic-control system of technological process (ACSTP) with the aim of adaptation of control system to parametrical and signal uncertainties are given. It is proved that adaptation of complex ACSTP to the functional uncertainties may be fulfilled on the base of calculation of vector of general control strategy of the upper hierarchy level of ACSTP. The given results allow to realize complex program of automatization of agglomerative production, which is connected with solution of tasks of synthesis of adaptive systems of multilevel control, which allow to increase the productivity with support of specified quality of ready product determined by Technical regulation TR 228-AP-56-2003 and to reduce its energy usage. © Metallurgical and Mining Industry.


PubMed | National Pedagogy University, University of Kinshasa and University of Geneva
Type: | Journal: Waste management (New York, N.Y.) | Year: 2016

Management of municipal solid wastes in many countries consists of waste disposal into landfill without treatment or selective collection of solid waste fractions including plastics, paper, glass, metals, electronic waste, and organic fraction leading to the unsolved problem of contamination of numerous ecosystems such as air, soil, surface, and ground water. Knowledge of leachate composition is critical in risk assessment of long-term impact of landfills on human health and the environment as well as for prevention of negative outcomes. The research presented in this paper investigates the seasonal variation of draining leachate composition and resulting toxicity as well as the contamination status of soil/sediment from lagoon basins receiving leachates from landfill in Mpasa, a suburb of Kinshasa in the Democratic Republic of the Congo. Samples were collected during the dry and rainy seasons and analyzed for pH, electrical conductivity, dissolved oxygen, soluble ions, toxic metals, and were then subjected to toxicity tests. Results highlight the significant seasonal difference in leachate physicochemical composition. Affected soil/sediment showed higher values for toxic metals than leachates, indicating the possibility of using lagoon system for the purification of landfill leachates, especially for organic matter and heavy metal sedimentation. However, the ecotoxicity tests demonstrated that leachates are still a significant source of toxicity for terrestrial and benthic organisms. Therefore, landfill leachates should not be discarded into the environment (soil or surface water) without prior treatment. Interest in the use of macrophytes in lagoon system is growing and toxic metal retention in lagoon basin receiving systems needs to be fully investigated in the future. This study presents useful tools for evaluating landfill leachate quality and risk in lagoon systems which can be applied to similar environmental compartments.


PubMed | National Pedagogy University, University of Kinshasa, Jamal Mohamed College and University of Geneva
Type: Journal Article | Journal: PloS one | Year: 2016

The occurrence of emerging biological contaminants including antibiotic resistance genes (ARGs) and Faecal Indicator Bacteria (FIB) is still little investigated in developing countries under tropical conditions. In this study, the total bacterial load, the abundance of FIB (E. coli and Enterococcus spp. (ENT)), Pseudomonas spp. and ARGs (blaTEM, blaCTX-M, blaSHV, blaNDM and aadA) were quantified using quantitative PCR in the total DNA extracted from the sediments recovered from hospital outlet pipes (HOP) and the Cauvery River Basin (CRB), Tiruchirappalli, Tamil Nadu, India. The abundance of bacterial marker genes were 120, 104 and 89 fold higher for the E. coli, Enterococcus spp. and Pseudomonas spp., respectively at HOP when compared with CRB. The ARGs aadA and blaTEM were most frequently detected in higher concentration than other ARGs at all the sampling sites. The ARGs blaSHV and blaNDM were identified in CRB sediments contaminated by hospital and urban wastewaters. The ARGs abundance strongly correlated (r 0.36, p < 0.05, n = 45) with total bacterial load and E. coli in the sediments, indicating a common origin and extant source of contamination. Tropical aquatic ecosystems receiving wastewaters can act as reservoir of ARGs, which could potentially be transferred to susceptible bacterial pathogens at these sites.


Alimbekova A.,L.N.Gumilyov Eurasian National University | Asylbekova M.,L.N.Gumilyov Eurasian National University | Karimova R.,National Pedagogy University
International Journal of Environmental and Science Education | Year: 2016

In recent years in psychological and pedagogical sciences there is a trend for increase of interest in studies of students’ potential in higher education institutions, because it is the major factor affecting development of student’s inner potential. Majority of works in this field deal with the issues of study of student’s personal potential, however the problem of leadership potential development in students (i.e. the question of development of leadership qualities directly within education space of a pedagogical university) is understudied, especially concerning students of pedagogical departments. Theoretical and methodological basis of the research is the analysis of psychological and pedagogical understanding of leadership as a phenomenon of development of leadership skills in students. The article contains the results of the theoretical analysis of leadership potential development in student’s personality within education space of a pedagogical university, define the structure of student’s leadership potential, study the content of the process of leadership potential development within education space of a pedagogical university. The study describes conditions for effective development of leadership skills. © 2016 Alimbekova, Asylbekovahh & Karimova.


Kodila-Tedika O.,University of Kinshasa | Asongu S.A.,African Governance and Development Institute | Azia-Dimbu F.,National Pedagogy University
Journal of Biosocial Science | Year: 2016

The purpose of this study is to assess the relationship between intelligence (or human capital) and the statistical capacity of developing countries. The line of inquiry is motivated essentially by the scarce literature on poor statistics in developing countries and an evolving stream of literature on the knowledge economy. A positive association is established between intelligence quotient (IQ) and statistical capacity. The relationship is robust to alternative specifications with varying conditioning information sets and control for outliers. Policy implications are discussed. Copyright © Cambridge University Press, 2016


Mpanya A.,Institute of Tropical Medicine | Hendrickx D.,Institute of Tropical Medicine | Hendrickx D.,University of Western Australia | Baloji S.,National Pedagogy University | And 4 more authors.
PLoS Neglected Tropical Diseases | Year: 2015

Socio-cultural and economic factors constitute real barriers for uptake of screening and treatment of Human African Trypanosomiasis (HAT) in the Democratic Republic of Congo (DRC). Better understanding and addressing these barriers may enhance the effectiveness of HAT control. We performed a qualitative study consisting of semi-structured interviews and focus group discussions in the Bandundu and Kasaï Oriental provinces, two provinces lagging behind in the HAT elimination effort. Our study population included current and former HAT patients, as well as healthcare providers and program managers of the national HAT control program. All interviews and discussions were voice recorded on a digital device and data were analysed with the ATLAS.ti software. Health workers and community members quoted a number of prohibitions that have to be respected for six months after HAT treatment: no work, no sexual intercourse, no hot food, not walking in the sun. Violating these restrictions is believed to cause serious, and sometimes deadly, complications. These strong prohibitions are well-known by the community and lead some people to avoid HAT screening campaigns, for fear of having to observe such taboos in case of diagnosis. The restrictions originally aimed to mitigate the severe adverse effects of the melarsoprol regimen, but are not evidence-based and became obsolete with the new safer drugs. Correct health information regarding HAT treatment is essential. Health providers should address the perspective of the community in a constant dialogue to keep abreast of unintended transformations of meaning. © 2015 Mpanya et al.


Bakum Z.,National Pedagogy University | Tsvirkun L.,Kryvyi Rih National University
Metallurgical and Mining Industry | Year: 2014

The article shows that graphic problems are powerful source and stimulating agent motivating the students for active cognitive and creative work during study of graphical disciplines; methods and techniques promoting the effectiveness of graphical preparation of future engineers, which are directed to both personality development and his further professional establishment, are suggested. © Metallurgical and Mining Industry 2014.


Stupnik M.,Kryvyi Rih National University | Morkun V.,Kryvyi Rih National University | Bakum Z.,National Pedagogy University
Metallurgical and Mining Industry | Year: 2014

In the article the main current approaches to the training of mining engineers were reviewed. Attention were focused on the person-centered, competency-based, systematic and problem-based approaches. Competences that should be formed in the future mining engineers (personal and social, general scientific, instrumental, general professional, special professional) were defined. © Metallurgical and Mining Industry.


Rashevska N.,Kryvyi Rih National University | Tkachuk V.,National Pedagogy University
Metallurgical and Mining Industry | Year: 2015

This paper reviews the history of mobile learning, provides a definition of «mobile learning». The properties, advantages and disadvantages of mobile learning, areas of its implementation at the Technical University and mobile learning tools were specified. © Metallurgical and Mining Industry, 2015.

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