Metal Distribution and Sediment Quality Variation across Sediment Depths of a Subtropical Ramsar Declared Wetland

The study of wetlands is particularly important as these systems act as natural water purifiers and thus can act as sinks for contaminated particles. Wetland sediments are important as they provide an indication of potential contamination across temporal and spatial scales. The current study aimed to investigate the distributions of selected metals and nutrients in different sites in relation to sediment depth, and identify relationships among sediment metals. Significant differences in nutrient (i.e., N, P) and metal (i.e., K, Mg, Na, Fe, Cu, B) concentrations were found across study sites, whereas nutrients (i.e., N, P) and metals (i.e., Ca, Mg, Fe, Cu, Zn) were significantly different with sediment depths. When compared against Canadian sediment standards, most of the assessed metals were within the “no effect” level across the different sites and depths. The K, Ca, and Mg concentration showed extreme contamination across all sites and depths. The enrichment factor values for K, Ca, and Mg showed extremely high enrichment levels for all sites and sediment depths. The Na, Mn, Fe, Cu, Zn, and B concentration showed mostly background enrichment levels. All sediments across the different sites and sediment depths indicated deterioration of sediment quality. Pearson correlations suggest that most metals might have originated in a similar source as that of Mn and B, owing to a lack of significant differences. These results provide baseline information for the general management of the Nylsvley Wetland in relation to sediment metal pollution. The specific sources of metal contaminants also require further elucidation to further inform management efforts

The radioactive contamination of ground and surface water near a uranium mine in Malawi

Ground and surface water in the uranium mining area of Kayelekera in Malawi was assessed for concentration levels of radioactive metals. Potential health risks associated with the intake of these metals in drinking water from various sources were also estimated. Surface, groundwater and mine discharge water samples were collected and analysed for radio elemental concentration using inductively coupled plasma mass spectrometry analytical technique. The results indicated a high concentration of 238U in water samples from lower Sere river. The activity concentrations of 238U, 232Th and 40K were however below WHO recommended limit. Health risk assessment using average committed effective dose were below the global average. Excess lifetime cancer risk values with an average of  for borehole water was calculated and found to be below the global average. Radiologically, the water quality of Kayelekera area post uranium mining activities has not been compromised, however close monitoring and treating of drinking water is recommende

African Communitarianism and Difference

There has been the recurrent suspicion that community, harmony, cohesion, and similar relational goods as understood in the African ethical tradition threaten to occlude difference. Often, it has been Western defenders of liberty who have raised the concern that these characteristically sub-Saharan values fail to account adequately for individuality, although some contemporary African thinkers have expressed the same concern. In this chapter, I provide a certain understanding of the sub-Saharan value of communal relationship and demonstrate that it entails a substantial allowance for difference. I aim to show that African thinkers need not appeal to, say, characteristically Euro-American values of authenticity or autonomy to make sense of why individuals should not be pressured to conform to a group’s norms regarding sex and gender. A key illustration involves homosexuality

Search for hyperdeformation in U isotopes

The U-232 nucleus was studied in order to search for a hyperdeformed band built upon the third minimum of the fission barrier. Upper limits for the percentage population of a hypothetical hyperdeformed band relative to the ground state band are given

Color-coded ligands: Tracking the catalyst using highly pigmented porphyrazine ligands in biphasic reactions

© 2014 American Chemical Society. We demonstrate the concept that highly colored imidazolium porphyrazine ligands and complexes may be useful for visualizing the location of a catalyst and/or ligand. This was analytically demonstrated by the application of UV-vis spectrophotometry to detect the ligand and ICP-OES spectroscopy for quantification of the Pd in the biphasic systems. In the first instance, a toluene/water system was used, in which the complex and ligand preferred the organic phase. Water-soluble substrates were made to react under these conditions by employing the complexes as catalysts in Heck and Suzuki C-C bond forming reactions. In the second instance, an ionic liquid containing biphasic mixture was used, in which the ligand/catalyst was retained in the ionic liquid. Catalyst recycling experiments were met with limited success

Challenges facing professional nurses implementing the Integrated Management of Childhood Illness programme in rural primary health care clinics, Limpopo Province, South Africa

BACKGROUND : Under-five mortality and morbidity could be reduced through increased implementation of the Integrated Management of Childhood Illness (IMCI) strategy. The aim of the study was to determine challenges facing IMCI-trained professional nurses on implementing this strategy when managing children less than 5 years of age. METHODS : A quantitative descriptive survey method was used. The target populations were IMCI-trained professional nurses with the sample of 208 respondents. Data were collected through self-report questionnaires and analysed using statistical analysis system software. RESULTS : The implementation of the IMCI strategy by IMCI-trained professional nurses in Vhembe primary health care (PHC) clinics continues to face challenges, making it difficult for professional nurses to follow guidelines. These challenges range from staff barriers, management barriers, poor management process and poor infrastructure. All these challenges lead to poor-quality under-five patient care. CONCLUSION : Regardless of the IMCI strategy being implemented since its inception in 1999, the under-five mortality remains not reduced. This is related to the identified challenges facing the IMCI-trained professional nurses implementing the strategy.The Department of Higher Education and Training and the National Research Foundation.http://www.safpj.co.zaam2021Family Medicin

Achieving effectiveness of antenatal outcomes: A qualitative study in Mutasa district, Zimbabwe

Achieving the effectiveness of antenatal outcomes depends on the utilization of antenatal care services. The purpose of the study was to explore the utilization of antenatal care in Mutasa District, Zimbabwe. A qualitative research approach using explorative and descriptive design was utilized. Purposive and snowball sampling techniques were used to sample pregnant women and women whose children were under the age of one year. In-depth interviews were conducted using the Shona language. Data were analyzed using thematic content analysis where themes and sub-themes emerged; namely; factors influencing the perceptions of women on antenatal care services uptake. We certify that all applicable institutional and governmental regulations concerning the ethical useof human volunteers were followed during this research. Multiple obstacles to adherence were identified, including a low level of education, low socio-demographic factors such as age, low income, distance traveled to the clinic, high parity, and acceptability of antenatal care by rural women. Awareness should be made by the Zimbabwean Ministry of Health and Child Care through better education of the target groups such as young mothers, people from low socio-economic groups, and childbearing women for better utilization