Plasmodium Falciparum Essay Example | Topics and Well Written Essays - 750 words

Plasmodium Falciparum - Essay Example The last is becomes infected in this way. All stages of malarial plasmodium development taking place in the body of the carrier – in a human, a bird and a mosquito. Such Sporozoa sporozoites are developed in the body of the mosquito and further transmitted to birds or human with saliva from the mosquito`s bite. Life cycle and transmission. The life cycle of Plasmodium falciparum is associated with changes of hosts. One part of the life cycle takes place in the human body where the parasites reproduce asexually; the second part occurs in the body of a specific carrier of malaria – female mosquito Anopheles, where plasmodium reproduces sexually (Dantzler et al.). Therefore, for Plasmodium falciparum, the human is an intermediate carrier, and the female Anopheles mosquito is the final host. Infection by Plasmodium falciparum occurs during sucking blood of patients with malaria and then mosquito infects another person by introducing parasites with its saliva during the bite. Via infected mosquito`s saliva the sporozoites enter the bloodstream of host and within 30-40 min get into a place of primary localization – into the liver cells (Dantzler et al.). There takes place an intracellular parasite asexual reproduction called tissue (exoerythrocytic) schizogony. From each of spo rozoites, a several thousand merozoites are formed. Further, they destroy hepatocytes and released into the bloodstream. The duration of this period is about 6-9 days. Merozoites penetrate into erythrocytes and thus begin the blood stage with trophosoite formation and erythrocytic schizogony (Wright and Rayner). In erythrocytes cells, the trophozoite is consistent passes through the ring, amoebic, mature trophozoite, schizont and merozoite stages. During schizogony, in erythrocytes occurs the formation of schizonts. Further, each schizont gives a rise to the several dozen of small merozoites

How employees react when facing organization change and what HR Literature review

How employees react when facing organization change and what HR manager should do - Literature review Example None of the mini computer companies could succeed in the business of personal computers Business schools and medical colleges are finding a hard tome to transform their curriculum according to the types of doctors and managers that are in demand in the market (Christensen & Overdorf, 2000, p.67). There are numerous other examples displaying the same challenge. It is seen that change efforts fail primarily because employers fail to handle the resistance towards change from employees. Managing change successfully means managing the fear of people. However, the peoples’ reactions to change efforts remain irrational and unsuccessful. Resistance towards the change originates from the fear of the unknown and apprehensions about a loss. HR managers play the crucial role of managing the reaction or response of employees towards the change process. The apparent reason to peoples’ fears is the way they perceive the change process, while the back end reaction to the change process is the extent to which they are equipped to deal with the change process. ... The project brings forth numerous critical reviews and suggestions of researchers and practitioners on the subject and delivers a critical analysis. It also puts forth their views regarding how changes can be managed effectively through effective people management procedures (Adair, 2007, p.124). Literature Review- How employees react when facing organization change and what HR manager should do Employee Resistance to Change- Critical Analysis The research begins with analysis of the greatest challenges of managing change initiatives in the organization. Managing organizational change is a difficult process as the conditions under which it is undertaken at the initial stage keeps changing. As situations keep shifting it becomes increasingly difficult for the top managers and agents to prepare for manage the change process in a way which satisfied both employers and employees. It is not surprising to understand that change resistance has attracted immense attention from practitioners and researchers. Immense attention has gone into the understanding of determinants and sources of change resistance. The general public and the media have gone into various forms of active resistances such as protests and strikes. Some of the other forms of organizational resistances are passive resistance, which is comparatively less observable, but has immensely attracted the concern of employers in organizations. Unsurprisingly, resistance towards change initiatives account for being one of the most crucial sources of organizational change failures (Conger & Kanungo, 1998, p.8). Meyer, (1982) and Nadler, (1998) have defined the concept of organizational change as the effort or the series of efforts which is designed in a manner to bring about change or transformation in