Vibration analysis of a 1/40-scale dynamic model of Saturn 5 launch platform-umbilical tower configuration

Direct stiffness method of computing vibrational characteristics of dynamic model of Apollo- Saturn 5 vehicle - umbilical tower configuratio

Alien Registration- Steeves, Ethel M. (Waterville, Kennebec County)

https://digitalmaine.com/alien_docs/15080/thumbnail.jp

Electronic Transport Properties of Ruthenium and Ruthenium Dioxide Thin Films

Resistivities (ρ) and Hall coefficients (RH) of polycrystalline Ru and RuO2 thin films were measured from 293 to 600 K in vacuum, O2, and CO. Differing nanostructures and textures were sputtered at normal, confocal, and glancing incidences to 20 - 300 nm thickness. For Ru in planar or nanorod morphologies, defects have negligible effect on RH, which is similar to RH in bulk metal. Models of effective thickness are derived for the nanorod morphology. For Ru and RuO2 films, decreases in ρ on first heating are caused by defect annealing; subsequent heating shows metallic behavior. Changes from n-type to p-type conduction in RuO2 are correlated to grain structures and film strains. For certain RuO2 films, oxygen loss in high vacuum is demonstrated and a RH phase diagram is constructed to reflect the switch in dominant carriers from electrons to holes. Exposure of some RuO2 films to pure CO is shown to cause an irreversible increase in ρ. Resistivity hysteresis loops after multiple heat cycles with switching from O2 to CO are posited to be consistent with catalysis on Ru rather than RuO2 surfaces. It is shown that switching the gas environment from O2 to CO can change dominant carriers. The physical instability, breakup, and reduction of RuO2 films to Ru metal upon CO exposure is demonstrated

Infectious Diseases.

n/

Separator development for a heat sterilizable battery Final summary progress report, 1 May 1966 - 15 Mar. 1967

Development and testing of vivyl polymer separator materials for sterilized silver-zinc secondary batter

Vibration characteristics of ring-stiffened orthotropic shells of revolution

Computer program solves vibration modes and frequencies of thin shells of revolution having general meridional curvature and orthotropic elastic properties in order to evaluate the dynamic behavior of structures with thin shelled components

Local Manipulation of Nuclear Spin in a Semiconductor Quantum Well

The shaping of nuclear spin polarization profiles and the induction of nuclear resonances are demonstrated within a parabolic quantum well using an externally applied gate voltage. Voltage control of the electron and hole wave functions results in nanometer-scale sheets of polarized nuclei positioned along the growth direction of the well. RF voltages across the gates induce resonant spin transitions of selected isotopes. This depolarizing effect depends strongly on the separation of electrons and holes, suggesting that a highly localized mechanism accounts for the observed behavior.Comment: 18 pages, 4 figure

Development of improved semi-organic structural adhesives for elevated temperature applications Technical summary report, 1 ~JUL. 1964 - 29 ~FEB. 1968

Titanium chelate polymer adhesive formulation for aluminum joint curing in high temperature application

Gender Differences in Parental Leave Before and After the Introduction of a Paid Parental Leave Policy: A Sequence Analysis of Administrative Time-Keeping Records

Paid leave confers health benefits to new parents and their children, but the absence of a national paid family leave policy in the United States has left workers to navigate a patchwork of paid and unpaid parental leave benefits accessed through their employers. As public and private paid leave policies expand across the US, it is imperative to determine how these benefits impact leave taking behaviors among new parents. We use sequence and cluster analyses of administrative time-keeping records to detail parental leave-taking during the first 180 days after adding a child among employees of a large public-sector organization with a new paid parental leave policy. Results show that the additional paid leave benefits replaced some of the unpaid leave women were taking and also lengthened their total leave duration. For men, who were only taking paid leave, the additional benefits allowed them to save their sick leave but left total leave duration unaffected. This study highlights the complex ways paid leave policies impact leave-taking among new parents. As more state and municipal governments consider paid family leave policies, understanding the interplay between these policies and existing organizational structures is critical to maximize the benefits across the workplace and limit unintended consequences

Places of Practice: Learning to Think Narratively

In the lived practices of narrative inquiry, we honour our relational ontological commitments and responsibilities as narrative inquirers. In this paper, we link these ontological commitments with our practice, which is often tension-filled because the knowledge landscape on which we live as researchers is shaped by paradigmatic rather than narrative knowledge. It is easy to get swept into thinking paradigmatically and to sustain ourselves as narrative inquirers amidst knowledge landscapes that cast narrative inquirers as not knowing when seen from within dominant plotlines. We see that not to fall into these dominant plotlines requires wakefulness to shaping places where we can practice thinking narratively