Wednesday, February 26, 2020
Mechanical cavopulmonary assist device cage for Fontan patients Research Paper
Mechanical cavopulmonary assist device cage for Fontan patients - Research Paper Example Smaller size of the filaments limits the structural support ability of the protective cage while large sizes of the filaments decreases the hydrodynamic properties of the design while increasing the pressure. The size of the filament thickness is however subject to change based on computational test results. The number of filaments is proposed to be five, not the same as the number of impeller blades, in order to shun resonance and vibration of the system. The protective cage offers protection to the vessel from the rotating components through its radial arrangements of the filaments. The elliptical design of the protective cage of filaments not only presents hydrodynamic characteristics but also provides space efficiency. The angle designs of the blades helps in space conservation given that a number of the blades can be fitted within the pump for maximum functionality. This helps in minimizing the size of the pump to ensure it properly fits within the blood vessel. The pump is characterised with diffuser blades, which are located on the protective filament cage. A shift in the flow directionality aids the diffuser blades to convert the rotational force produced by the impellor to potential energy. A motor-magnetic bearing suspension is used to induce the pump rotation. The proposed design will aim to achieve this through the levitation and rotation of the impellor within the protective filament cage (Throckmorton et al., 2010). The protective cage of filaments is designed with five elliptically shaped filaments. The proposal aims at modifying the design to serve both protective and design functions at the same time. The shape of the protective cage filaments serves significant role in stabilizing the impeller blades radially and axially in addition to acting as a barrier in the protection of the vessel from the rotating impeller blades. The unique elliptical design shape of the filaments plays a vital role in maximizing energy production from impeller while
Monday, February 10, 2020
Adler and Van Dorens The Activity and Art of Reading Essay
Adler and Van Dorens The Activity and Art of Reading - Essay Example (2014). In this case, I think that it is the studentsââ¬â¢ responsibility to apply the concepts taught by the teacher so that they can articulate them in their memory. In addition, learners have to incorporate initiatives of internalizing different concepts and knowledge that they receive from the teachers. Therefore, learners are obligated to act on things communicated to them, Adler, M. (1999). After reading ââ¬Å"The Activity and Art of Readingâ⬠by Adler and Van Doren, I deduce my main role as a student is to be a thinker or a learner. In this aspect, I should consider the absence of a teacher as a motivating factor to help me have my books for a tutor: the book takes the position of a life instructor. Compulsorily, I should be very active in class by not only taking simple questions from the teacher but also tackling ideas raised by other students. In addition, I should feel free to express my own thoughts and ideas concerning the matter under discussion in the classroom. This will allow me to create my own knowledge and ideas about learning. Lastly, I have a role as a student to be motivated about learning. In this case, I am supposed to exhibit surmountable interests in learning. Adler, M. (1999) suggest that the main classroom duty performed by a teacher is to facilitate learning. In this case, the teacher communicates ideas and concepts to the students that are commonly referred to as aided discovery. The teacher is tasked with the role of monitoring various activities that learners are undertaking. In addition, the teacher is obligated to prepare learners with knowledge and prior experience so that the learning process can be conducted with expedite and efficiency. Other roles include managing the learning, managing activities and managing the group. Teacher diversity capital, according to Adler, M. (1999), is intended to develop teaching enrichment that embraces sensation and drives teachers to seek new prospects and ideas for building
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