Although the Department of Health did not encourage the use of mosquito coil, still many people and household use this at their homes. Luckily, there are other tools and appliances that repel and kill mosquito. There is now available racket-type mosquito repellant that once mosquito near this device or slapped by the racket-type mosquito repellant, one can hear the tickling sound of mosquito being zapped.The net structure is primarily made up of three layers of metal mesh and is rather a complicated assembly. The inner central layer is actually the "hot" mesh and is terminated as a high voltage source from the circuit enclosed in the lower handle area. The outer two layers are simply connected with the negative of the battery and constitute the ground for a return path to the central “hot" mesh line.
Population both to the side of mosquito and the host is a factor influencing host preferences of mosquito vectors. The population of mosquitoes is regulated by many natural factors. Natural enemies including predators (Bond et al., 2005; Kweka et al., 2011); and entomopathogen parasites (Washburn, 1995; Mouatcho, 2010; Omoya and Akinyosoye, 2013) are common mortality factors of mosquitoes both at the larval and adult stages. Nutrient resource is also key factor in regulating mosquito population dynamics. For all natural habitats, the amount of primary productivity is a powerful determinant for the number of resident species and their population sizes because of inherent limits on conversion and utilization efficiencies at the various trophic levels; thus, primary productivity can set the upper limit on the number of trophic levels a community can support (Begon et al., 1986).
Of particular importance was the users’ choice of insecticide-treated net in terms of shape and color as well as practice to mend them when damaged. This was a key problem in the use of, particularly the rectangular ITN. Rectangular insecticide-treated nets are often used where malaria or other insect-borne diseases, as well as nuisances, are common, especially as a tent-like covering over a sleeping bed. For effectiveness (the probable impact of an intervention, when deployed in real-life conditions), the insecticide-treated nets must not rest directly on the skin of the sleeping person because mosquitoes can then reach and bite a person through the net’s webbing. When they are hung over sleeping beds, rectangular mosquito nets provide more room to the user than conical nets.
Children are more likely to develop a severe reaction than are adults, because many adults have had mosquito bites throughout their lives and become desensitized. Mosquito select their victim by evaluating scent, exhaled carbon dioxide and the chemicals in a person’s sweat.
Zika virus can be transmitted through mosquito bites. The virus is transmitted through the bite of an infected Aedes species mosquito, they prefer to bite people and they are aggressive daytime biters. The mosquitoes become infected when they feed on a person who is already infected with the virus (“Transmission and Risks”). There are many countries and continents which have the Zika Virus. Mexico, South America, India, the Philippines and about 70% of Africa has the virus (“World Map of Areas with Risk of Zika”).
Further, the surveys that have been administered to respondents will be analysed and used to answer one of the sub-research questions. 1.4 Delimitations Due to practical limitations, only a few of MAS’s press releases will be analysed, hence not giving a thorough and comprehensive overview of the strategies applied during the two airline crashes. Additionally, the choice of news articles might also affect the scope and result of the analysis, the choice of the most renowned and read news agencies have been selected, however it is always delicate to “trust” that this given news agency is truthful about facts on the research topic. This will subsequently not be representative of the research as a whole. 2.
Introduction This report is prepared by Raveena kaushik of b.sc forensic 1st year. It contains the forensic examination of insecticides . Information is collected from different books and sources regarding the effects of insecticides on humans and its involvement in fornesics. It includes following topics: 1)What are insecticide poisions 2)insecticide poisionins 3) Types of insecticide poisoning? 4)mode of action of insecticides?
There is the use of insecticide-treated nets (ITN), indoor residual spraying (IRS) as vector control measures (Beier et.al 2008). These control methods reduce the transmission of malaria there is still debate about whether they can succeed in eliminating malaria. A research conducted in eastern Rwanda showed that some people due to lack of knowledge about malaria did not readily accept ITN, they claimed that it makes them sweat at night, some people developed skin rashes and infestation of the nets by bedbugs which they claimed was increased by IRS (Ingabire et.al 2015). There is also the development of resistance to different classes of insecticide in some African countries (Owens,
CHAPTER FIVE DISCUSSIONS, CONCLUSION AND RECOMMENDATIONS 5.1 Introduction This chapter summarizes findings of the research, gives answers to the research questions and makes conclusions in relation to the research objectives. The study also makes recommendation and suggestions for further research. 5.2 Discussions of Findings This section discusses findings and provides conclusions of the survey visualized by tables in chapter four by discussing the general results from each variable to provide insights into the findings. 5.2.1 Competency Planning Findings of the study indicate that competency planning had a positive and the highest influence of the four independent variables on employee retention as tested by the hypothesis. Among the wide
But the aim in qualitative research makes emphasis on exploring diversity, and the sampling strategy and sample size do not play a significant role. (Kumar, 2016, p.318) Moreover, in qualitative research the collection of data goes until you feel that you have reached the saturation point.(Kumar,2016,p.318). First of all, the intensity and therefore the length of the qualitative interview will impact on the design of the qualitative sampling strategy (Amanda Wilmot, 2016). Indeed, longer interviews will provide the more detailed information and data. But on the other hand, the length and the number of the interviewees might affect the time we spend doing the research.