Knowledge of macrophytes and macroinvertebrates composition in a changing environment is essential for wetland monitoring. This paper assesses the biodiversity in two wetlands of different trophic levels in the Bamenda town at three different stations. Macrophytes and macroinvertebrates diversities were assessed respectively through Braun-Blanquet and multi-habitat approaches. The water physico-chemistry of these wetlands was also determined following standard protocols for water analysis. Based on the water quality, the principal correspondence analysis showed that station 3 stands out from the others with high organic and mineral parameters. A total of 19 families of macrophytes belonging to 35 genera and 42 species were identified. The Shannon –weaver’s Diversity index varies from 2.48 (station 2) to 1.90 (station 3) indicating a reduction of the plant diversity with the increase of human pollution. The dominant and common species identified in the study sites are: Alternanthera sessilis, Commelina benghalensis, Echinochloa pyramidalis and Pennisetum pupureum. These species tolerate the organic pollution, and could be used in the context of bio-purification of wastewater. Concerning macroinvertebrates, they belong to 1 phylum, 4 classes, 9 orders, 35 families and 55 genera. The most abundant class was the insects with 97% of the total fauna followed by the class Annelids which represented 3%. The abundant family was Gerridae represented by 7 genera. A negative correlation was found between water pollution and biodiversity meanwhile a positive correlation was found between macrophytes presence and macroinvertebrate diversity.

A study on the availability, accessibility and consumption of fruits and vegetables was carried out in the Miti-Murhesa heath zone, with the aim of contributing to knowledge on safety and eating habits based on fruits and vegetables in households. To do this, a households inquiry was carried out. A sample of 384 households was formed and divided into axes while retaining all the Health areas in the zone. The results on availability, accessibility and consumption show that 38.8 % of households have the fruits, 51.8 % have access to fruits and 82.0 % consume the fruits with an average of 3 days per week. Regarding vegetables, 74.2 % of households have them, 81.0 % have access to them and 96.1 % consume them with an average of 4 days per week. A correlation was observed between the father’s profession, the level of education of the parents and consumption fruits and vegetables in the households. Averall, if we also take into account the frequency, the availability, accessibility and consumption of fruits and vegetables one records that they are low in Miti-Murhesa Heath zone.

The short- and long-term properties of palm kernel shell (PKS) and maize cob, biomass waste, and crops with energy potential for use as fuel pellets in industrial and residential settings, are examined in this study. A thermogravimetric investigation was conducted to determine the distinctive thermal behavior of the biomass above plants in an air and inert environment at room temperature to 700°C for the heating rate of 10°C min-1. It was discovered that the weight loss trends in the two biomass samples were identical in trend. Three reaction zones—char degradation, dehydration, and breakdown—that generated volatility were seen when the samples were being tested in a nitrogen atmosphere. Dehydration, devolatilization, and char burning occurred in three reaction zones in an air environment. The proximate study revealed that PKS has 9.7% more volatile matter than maize cob whereas biomass has a 0.7% difference in carbon combustion value (15.1% for maize cob and 14.4% for PKS). The final study revealed that PKS had a greater heat value per kilogram than maize cob, which has heat of 16.4 MJ/kg and contains 47.6% carbon, 5.3% hydrogen, 44.3% oxygen, and 6.2% water. The findings of theoretical and experimental techniques showed that palm kernel shell has the highest calorific value, making it the best for biomass energy generation and fuel pellets for both residential and industrial use to power machinery and create income for investors.

This article aimed to determine the rate of integration of psychomotor objectives in the teaching of Life Sciences (SV) from the seventh basic education to the second humanities in Bukavu. Also, it aimed to identify the reasons for inability to formulate said objectives and the intrinsic and extrinsic characteristics of the teacher likely to influence this formulation. The analysis of educational objectives and the questionnaire survey showed that only 38.2% of teachers formulated psychomotor objectives. Lack of a proper teacher guide and lack or insufficient training of teachers were the main reasons. The Chi-square test and univariate logistic regression analysis at the significance level of 0.05 revealed that no intrinsic and extrinsic characteristics of the teacher had a significant relationship with the formulation of psychomotor objectives (p> 0.05).

The added value of the company is distributed among the stakeholders: staff, capital providers, etc. shareholder remuneration determines the efforts of managers. The low remuneration pushes them to withdraw and the absence of entrepreneurial spirit on the part of the employees is that they do not perceive that their own performance depends on that of the company. However, the surrounding world is defined by equivalent interest. The presence of capital debt in the entity. The theory of subsistence of the company is the fact that at the beginning of the activities, the entity is in a state of insufficiency following the various debts including the equity, it will pass to the possession only after the clearance for the sharing. Correct knowledge of possession within entities. The financial state of the company would be in insufficiency at the start and then the elimination of this, making them smaller and smaller for another point of growth: ownership. And correcting employee inefficiency is justified by the slogan «it’s for them». We can be greater when we come together. The solution is group agreement. The entity is the fruit of the organization: collective cleanliness to be exploited collectively. The loss can therefore only be overcome by collective tightening and organizational solidarity and the life of the entity in the event of loss is the loan or aid, while waiting for the situation to improve and be reconstituted. Profit as a driving force. Profit goes with individualism, which goes to everyone. So, live together to produce.

The current work deals with the monitoring and control of exploration and exploitation activities at the Lauzoua manganese mining (LMM) located in the Guitry department, in the southwestern tip of Côte d’Ivoire. In order to prevent and reduce the risk of accidents associated with the mine’s activities, we undertook a safety audit of the working environment, i.e. to identify the inadequacies and dangerous situations present during exploration and mining activities. Our work focused first on identifying and listing the mine’s activities through a field survey and visual observation, and then on assessing the risks associated with these activities using the Failure Modes, Effects and Criticality Analysis (FMECA) method. Our study reveals different risks of which we have categorized them in order of dangerousness, i.e. dramatic, serious and limited risks, with a serious risk percentage of 80% for exploration activities, compared with 28.57% for operating activities. The results show that the highest unsafe risk encountered during exploration campaign are caused by the injury or fracture in the event of a fall into the deepest shafts, and the highest unsafe risk encountered during operational activity are caused by driver distraction or lack of adequate lighting on site are the highest. These results clearly show that exploration and mining activities are not risk-free, and need to be carried out in accordance with strict safety monitoring and preventive measures. A strict environmental and safety assessment should therefore be carried out prior to mining activities, to prevent any risks that could impact and compromise the successful completion of the work.

Containers are effective lightweight virtualization technology due to their common host operating system, rapid launch times, scalability, portability, and quick deployment. With the help of containers, programs can create run-time environment that is independent on the platform that boosts mobility and efficiency by encapsulating all required dependencies (code, running time, system libraries, and tools) into a virtual environment. The scheduler is an essential and critical part of optimizing performance and decreasing the cost of container services. Conventional Scheduling methods which are single-criteria-based algorithms (i.e. First Comes First Serves (FCFS), Round Robin, and Shortest Job First) cannot meet the demands of cloud computing. Multi-objectives-based container scheduling algorithms are therefore required to satisfy efficient resource usage optimization by optimally mapping containers to VMS. A novel methodology to the aforementioned issue may be provided by clustering-based task scheduling algorithms, which facilitate the efficient scheduling of a huge number of containers depending on container multi-criteria. This paper suggests a k-mean clustering algorithm for containers to enhance the load balancing that shortens resource execution times while also boosting the resource utilization rate. According to the experimental findings, the suggested algorithm outperforms FCFS algorithm in with respect to the execution time and maintains significant improvement of resource utilization among virtual machines and physical machines.

Ongoing soil degradation under cotton is a constant concern for farmers in cotton-growing basins. The aim of the study was to assess soil fertility under cotton in the Ouangolodougou production basin. To do this, soil sampling of the 0-15 cm horizon was carried out in the 15 sections that make up the Ouangolodougou production basin over four (4) successive cropping campaigns from 2017-2018 to 2019-2020. Chemical analyses of soil samples were carried out on the following parameters: exchangeable calcium (Ca2+), exchangeable magnesium (Mg2+), exchangeable potassium (K+) and Ammonical Nirogen N-NH4+. Results indicate that the levels of N-NH4+ and exchangeable bases (Ca2+, Mg2+, K+) are below the average threshold values over the 4 successive tracked campaigns. Also, results demonstrated a sectional basis effect of cotton cultivation on N-NH4+, Ca2+, Mg2+, and K+.

In this research, the genetic diversity of squash (cucurbita sp) sold in Kisangani (R.D.Congo) was studied. To do this, we carried out ten field trips along the city’s various main roads, including kilometre point seven (PK7) towards the airport, the central market and the military headquarters. We made the following observations for each fruit: shape, colour, length, weight and width. All the results of the analysis were used to identify the 4 botanical forms of squash in Kisangani (elongated green, flattened yellow, round yellow, round green). The elongated green phenotype was the most represented (33%), followed by round green (31%), round yellow (21%) and flat yellow (15%).

The exploitation of wood energy has grown in scale in Bamanya to the point of reaching a situation of advanced irreversibility. Due to poor manufacturing and assembly practices for carbonization ovens. The large dense forest has disappeared, giving way to a grassy savannah. Timber exploitation has led to the availability of non-timber forest products (NTFP), environmental degradation as well as loss of livelihoods, migration, poverty and social conflicts. the disappearance of biodiversity, the modification of the aquatic ecosystem (Ruki). a more balanced approach which takes into account the dynamics of supply and demand as well as the contribution of NICT through GIS technology would help substantially.