Mechanical design and prototyping of a neonatal incubator for areas with intermittent electrical grid power

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.Cataloged from PDF version of thesis.Includes bibliographical references (p. 31).Every year, 1.1 million infants die from complications related to preterm birth. An estimated 80% of these deaths could be prevented through the use of non-intensive methods, including thermal regulation. Neonatal incubators are common life-preserving devices for preterm infants in developed countries, but are under-utilized in much of the developing world due to designs intended for large hospital settings their need for constant electrical grid power and. A design is here proposed for a portable off-grid neonatal incubator for use in those areas. The design is honed through human-centered design practices and the use of SolidWorks representations. Early-stage prototypes are constructed from foam and ABS. Prototyping in ABS required overcoming difficulties presented by the size constraints imposed by the thermoforming machines available in the Laboratory for Manufacturing and Productivity.by Elaina Kim Present.S.B

Assembly called to order at 11a.m. Mr. Speaker presiding.

Happy Valentine’s Day! On this day that we celebrate the wonders of love, I’m reminded of Jesus ’ answer when a leader asked Him which was the greatest commandment. Jesus replied: “Love the Lord your God with all your heart and with all your soul and with all your mind. This is the first and greatest commandment. And the second is like it: Love your neighbor as yourself. All the Law and the Prophets hang on these two commandments. ” (Matthew 22:37-40) Let us pray. O God, help us to always love in these two directions. Even now. Even here. AMEN. Pledge of allegiance to the Flag. Assemblyman Conklin moved that further reading of the Journal be dispensed with, and the Speaker and Chief Clerk be authorized to make the necessary corrections and additions. Motion carried

historic Capitol Building. Mr. Speaker presiding.

Today, we have come to transact the business of this state in this historic chamber. Today we stand on the shoulders of many great leaders who have fought for the issues they championed. May we follow in their footsteps. Today we pray for Your gift of contentment, that we may not waste our time desiring more, but learn to use and enjoy what we have. We may not know everything, but we may know You and Your will. We need not be rich to be generous, nor have all wisdom to be understanding. Our influence may not be great, but it can be good. Our speech may not be eloquent, but it can be truthful and sincere. We cannot all have good looks, but we can have a good conscience, and having that, we shall have peace of mind and need fear no man. May we be kind one to another, tender-hearted, forgiving one another, even as You, for Christ's sake, have forgiven us. AMEN. Pledge of allegiance to the Flag. Assemblyman Conklin moved that further reading of the Journal be dispensed with, and the Speaker and Chief Clerk be authorized to make the necessary corrections and additions. Motion carried

Assembly called to order at 10:40 a.m. Mr. Speaker presiding.

Almighty God, most merciful, most compassionate, shower us with Your grace and compassion, and enable us to spread compassion and mercy to others. Almighty God, God of infinite justice, inspire us to exercise justice everywhere, inspire us to justice in this Assembly as all that is right. We know that You love justice and just people, together with the doers of good. Almighty God, bless our nation, our leaders, our state, and our lawmakers in this Assembly with the best of guidance. AMEN. Pledge of Allegiance to the Flag. Assemblyman Oceguera moved that further reading of the Journal be dispensed with, and the Speaker and Chief Clerk be authorized to make the necessary corrections and additions. Motion carried

Senate called to order at 11:02 a.m. President Hunt presiding.

might be forgiven for the evil that clings to us and to be raised from the dead, that we might be justified before You for the life to come and might dwell in Your eternal peace. You have ordained the governing authorities to subdue evil for this life and to promote what is good, that there might be justice in our world and peace for this life. We pray for Your blessing upon this Session of the Nevada State Senate. Grant to its members such character, honor and sense of purpose, that what they do might be a means to justice, security and peace for our State and its citizens. We ask for all these things according to Your will, praying in the Name of the same Jesus Christ, our Lord, who lives and reigns with You and the Holy Spirit, one God, now and forever. AMEN. Pledge of allegiance to the Flag. Senator Raggio moved that further reading of the Journal be dispensed with, and the President and Secretary be authorized to make the necessary corrections and additions. Motion carried

Analysis of the Reaction Rate Coefficients for Slow Bimolecular Chemical Reactions

Simple bimolecular reactions $A_1+A_2\rightleftharpoons A_3+A_4$ are analyzed within the framework of the Boltzmann equation in the initial stage of a chemical reaction with the system far from chemical equilibrium. The Chapman-Enskog methodology is applied to determine the coefficients of the expansion of the distribution functions in terms of Sonine polynomials for peculiar molecular velocities. The results are applied to the reaction $H_2+Cl\rightleftharpoons HCl+H$, and the influence of the non-Maxwellian distribution and of the activation-energy dependent reactive cross sections upon the forward and reverse reaction rate coefficients are discussed.Comment: 11 pages, 5 figures, to appear in vol.42 of the Brazilian Journal of Physic

The Quantum Mechanics of Hyperion

This paper is motivated by the suggestion [W. Zurek, Physica Scripta, T76, 186 (1998)] that the chaotic tumbling of the satellite Hyperion would become non-classical within 20 years, but for the effects of environmental decoherence. The dynamics of quantum and classical probability distributions are compared for a satellite rotating perpendicular to its orbital plane, driven by the gravitational gradient. The model is studied with and without environmental decoherence. Without decoherence, the maximum quantum-classical (QC) differences in its average angular momentum scale as hbar^{2/3} for chaotic states, and as hbar^2 for non-chaotic states, leading to negligible QC differences for a macroscopic object like Hyperion. The quantum probability distributions do not approach their classical limit smoothly, having an extremely fine oscillatory structure superimposed on the smooth classical background. For a macroscopic object, this oscillatory structure is too fine to be resolved by any realistic measurement. Either a small amount of smoothing (due to the finite resolution of the apparatus) or a very small amount of environmental decoherence is sufficient ensure the classical limit. Under decoherence, the QC differences in the probability distributions scale as (hbar^2/D)^{1/6}, where D is the momentum diffusion parameter. We conclude that decoherence is not essential to explain the classical behavior of macroscopic bodies.Comment: 17 pages, 24 figure