http://dspace.lamu.edu.zm:8080/handle/123456789/2 Tue, 13 Oct 2026 04:19:41 GMT 2026-10-13T04:19:41Z http://localhost:8080/jspui/retrieve/21a5cf41-7c07-4223-8ec9-064373c5dadf/premed.jpg http://dspace.lamu.edu.zm:8080/handle/123456789/2 http://dspace.lamu.edu.zm:8080/handle/123456789/202 Title: Determination of the potential for generation of electricity from municipal solid waste in Zambia Authors: Kombe, Shakalita Dimas Abstract: The economic growth and industrial development of any county requires a drive from energy hence the industrial development of any nation is dependent on its energy supply. Demand for energy in Zambia has been rising due to robust GDP growth of more than 6 percent per year for the past decade in the country. With a rapidly growing population and some signs of economic growth, the country is unable to meet its electricity demand. Zambia was faced with a deficit of 560 megawatts in its energy supply because of unusually low water levels in the Kariba Dam. The objectives of the research included the quantification of the available municipal solid waste in the major cities which included Lusaka, Ndola, Kitwe and Livingstone and determining its contribution to electricity generation, reviewing and surveying of technologies to ascertain a suitable type for the country and lastly to determine the theoretical potential and compare to the actual potential for generating electricity from municipal solid waste. The method for primary data collection involved interviews, questionnaires and survey of previous research. Secondary data was acquired from utilisation of formulas for population prediction, Energy potential utilising tonnage and calorific value as well as levelised cost of Energy. The study revealed that the major cities have the potential to generate electricity from the annual municipal solid waste collected. The average energy potentials for Lusaka, Ndola, Kitwe and Livingstone were 4.16TWh, 0.73TWh, 0.82TWh and 0.16TWh respectively. The percentage deviations from the theoretical potential were ranging from 74 to 86 percent. Project evaluation concentrated on gasification, combustion and anaerobic digestion by utilising the levelised cost of energy for each technology. Anaerobic digestion was the suitable option for the country. The research revealed that the available resource of municipal solid waste can be used as an alternative energy source for electricity production. Description: This thesis can be accessed through this link http://dspace.unza.zm/handle/123456789/7051 Tue, 01 Jan 2019 00:00:00 GMT http://dspace.lamu.edu.zm:8080/handle/123456789/202 2019-01-01T00:00:00Z http://dspace.lamu.edu.zm:8080/handle/123456789/183 Title: An Assessment of the Concentration of Iron between Galvanized Iron Riser Pipes and Stainless-Steel Riser Pipes in Borehole Water as a Result of Corrosion Authors: Chola, Ryan M. Abstract: Iron is a problem usually associated with borehole water supplies. Iron can be found in water in two states. Water containing ‘ferrous’ iron usually clear when it comes out of the ground but becomes cloudy or red when it meets air, converting the iron to its ‘ferric' state. The presence of iron in ground water is usually from natural process and abundant existence (Daughney and Reeves, 2005).This study was conducted in Mbala district of Zambia. The district occupies a strategic location close to the border with Tanzania. The study was conducted in order to improve the living standards of the people of Mbala by providing clean drinking water for hygiene and sanitation. The challenge however is providing clean drinking water particularly with Iron levels less than the World Health Organization limit of 0.3mg/l which is adopted by the Zambia bureau of standards. The study focused on the geology of the study area as a probable source of iron but went further to compare within the same geology the two types of materials used in the construction of the water boreholes in the area. The two types of materials by which the boreholes were named are stainless steel bores and galvanised steel boreholes. During data collection, primary data was collected through focus group interviews in order to record the impact the presence of iron in the water has had on the water users. This was done by the administration of questionnaires. The Global positioning system and pH of the water was recorded and measured in-situ. The photometric method was used to measure the amount of iron in each of the 100mls of water collected from the boreholes though laboratory analysis. It was expected that the values of the concentration of iron would be below the WHO standards but the values were so high for both types of bores that water security is threatened in the area and possess as a challenge in meeting the sustainable development goal number six. In conclusion, the stainless-steel riser piped boreholes showed to contain more iron concentration than galvanised steel riser piped boreholes. Description: This article can also be accessed through this link https://bit.ly/2WBv51u Wed, 01 Jan 2020 00:00:00 GMT http://dspace.lamu.edu.zm:8080/handle/123456789/183 2020-01-01T00:00:00Z http://dspace.lamu.edu.zm:8080/handle/123456789/169 Title: COVID-19 and E-learning: Authors: Chola, Ryan; Kasimba, Phebby; George, Rini; Rajan, Rekha Abstract: Objective: The study focused on assessing Physics students' perceptions towards E-learning amidst COVID-19 pandemic. Materials and Methods: This study used a Cross-Sectional design through an online survey and was conducted at the Lusaka Apex Medical University. A sample size of 210 students was purposively sampled and a questionnaire was used to collect data. Microsoft Excel 2013 was used to analyze the data and descriptive statistics was used to report frequencies and proportions of responses on the level of knowledge of learners towards E-learning, E-learning experiences of the students and pros and cons of E-learning. Results: The study reported that 97.9% of the students were aware of E-learning and only 2.1% did not have an idea about it. Most of the students had a positive E-learning perception with few barriers such as gender, internet access and domestic activities. The students perceived E-learning to be convenient for lessons, ease submission of assignments and readily available online learning resources. On the other hand, students were not in favor of online laboratory and tutorial lessons. Additionally, social isolation and financial constraints during the pandemic had a negative impact on students' E-learning experience. Conclusion: The study concluded that E-learning is possible provided that investment in internet infrastructure and training of instructors and students on its usage is done robustly. Future research is required to ascertain the actual factors that make gender a disadvantage when it comes to E-learning experiences as suggested by the minority of the students. In addition, similar studies can be conducted in other disciplines and Universities to validate the findings of this study. Description: This article can be accessed using this link https://www.researchgate.net/profile/Ryan-Chola/publication/343500907_COVID-19_and_E-learning_Perception_of_Freshmen_Level_Physics_Students_at_Lusaka_Apex_Medical_University/links/5f2d2098a6fdcccc43b0703e/COVID-19-and-E-learning-Perception-of-Freshmen-Level-Physics-Students-at-Lusaka-Apex-Medical-University.pdf Wed, 01 Jan 2020 00:00:00 GMT http://dspace.lamu.edu.zm:8080/handle/123456789/169 2020-01-01T00:00:00Z http://dspace.lamu.edu.zm:8080/handle/123456789/133 Title: Physico-mathematical Conceptual Difficulties among First Year Students Learning Introductory University Physics Authors: Kasimba, Phebby Mwangala; Shumba, Overson Abstract: This descriptive survey at Kwame Nkrumah University in Kabwe, Zambia, explored difficulties that first year students (n= 116) experienced and perceived with physico-mathematical concepts in an introductory physics course. The data on difficulties was collected using a physics achievement test and a focus group discussion session while a questionnaire was employed to assess perceptions of difficulties associated with the physico-mathematical topics and concepts in the test. The students’ performance in the test was unsatisfactory where the scores ranged from 16% to 46.9% and averaged 33.0% in the five-question test. They had difficulties in creating and interpreting formulae and data and unsatisfactorily identified, combined and applied physico-mathematical concepts in the test items. The questionnaire survey, more than 60% of the students were likely to rate lecture topics on topics such as speed, work, and energy as not difficult. This number significantly decreased to around 35% when asked to rate the use, application or derivation of specific physico-mathematical concepts in the test. For example, 69.8% rated topic or concept ‘acceleration’ not difficult and 35.4% expressed having to formulate the equation a= (vf-vi)/t using information from a graph in the test as ‘difficult’. The findings of this study suggest that students need close support to comprehend physico-mathematical relations and their interpretation deeply. Description: this article can be accessed at this link: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=Physico-mathematical+Conceptual+Difficulties+among+First+Year+Students+Learning+Introductory+University+Physics&btnG= Fri, 01 Jan 2016 00:00:00 GMT http://dspace.lamu.edu.zm:8080/handle/123456789/133 2016-01-01T00:00:00Z