Intergenerational Interview Essay Example | Topics and Well Written Essays - 1000 words

Intergenerational Interview - Essay Example At this state, the psychological crisis as characterized by Erickson is â€Å"integrity† versus â€Å"despair† (Shaffer & Kipp, 2009). Individuals in this stage are more associated with wisdom. For Erickson, integrity brought out two meanings. The first meaning involves consistency of values, actions, measures, methods, expectations, principles, and outcomes. It entails the ability of an individual to achieve his or her goals. The second meaning is an immanent quality of truthfulness and honesty as the major motivators of an individual’s actions. Despair is as a result of lack of hope (Zastrow & Kirst-Ashman, 2009). On reflecting on her life, Catherine feels like she has achieved enough in terms of taking care of her family. Integrity associated with this stage of life is evident in relation to Catherine when she looks at both her daughters, who are all independent, and feels successful. However, despair steps in when Catherine feels like she failed to do enough to keep her husband alive, even though there was nothing she could do, as she is very lonely. In addition, she feels like she did not make enough financial achievements and that she is going to run out of money, when in real sense she is not poor. One of the most significant developmental life events that Catherine went through was marriage. It is important to note that young adults have a need for establishing loving, intimate relationships with other individuals. The success of her marriage was highly important in her young and middle adulthood as she built a strong relationship with her husband and children. This is evident in her loneliness and her memories of her husband who died. Also, the distance of her daughters has increased her level of loneliness as they have established their families and live independently. However, the presence of her grandchildren has enabled her to establish new

Selective Laser Melting of Iron Essay Example | Topics and Well Written Essays - 250 words

Selective Laser Melting of Iron - Essay Example It is imperative to note that the carbon content of steel plays a critical role in determining processability of SLM. High carbon content also has adverse effect on high speed steel and SLM produced steel, since they portray a limited densification response. Wright et al. [2], in his research, found out that with increase in carbon contents, there is increase in the thickness of the carbon layer sifted on the melt surface. Just like the oxide layer, the carbon layer has a critical influence mostly on diminishing wettability and causing the melt to spheroidise rather than flow across the underlying surface. In addition to this, the brittleness of SLM manufactured high carbon content steel is increased by the formation of complex interfacial carbides at grain boundaries. Childs et al. [4], through his research, concluded that the dissolution of carbides is favored by increasing the heat flow in the treated powder. On the same breath, increasing heat flow homogenizes distribution of all oying elements. Thus, a thin powder layer thickness, which is less than 100mm, is more recommendable for laser melting. This is besides the optimization of laser types and parameters. Due to this reason, high volumetric energy density for both elemental homogeneity and powder consolidation is achieved [5-7]. In this process, heat generated from a CO2 laser is used to sinter systematic powder layers from 3D objects arranged layer by layer [8]. Due to this, the time required for tool making is considerably reduced. The basis of the sintering is the â€Å"liquid phase sintering mechanism.† The technique involves melting the powder partially. This is also termed as semisolid consolidation mechanism [9-10]. In this form of sintering, a minute amount of liquid phase (comprising between 1 - 10% by volume), with solubility for the solid considered to be at sintering temperature, is employed. When cooled, the liquid crystallize at