371 research outputs found
Gulf Stream Sea Surface Temperature Shift
Sea surface temperatures (SST) of the Gulf Stream change enormously on year to year basis. In this study, however, I investigated the trends and temperature shifts over a 20-year period determining if a clear shift is evident in this particular current. I found no significant trends, but I did find several interesting results. I used ArcGIS to gather and analyze data from NOAA\u27s satellite (AVHRR) and developed an Ordinarily Least Squares regression model comparing a monthly average over 20 years to determine if the temperature shifts over time were not random. I was able to isolate slopes with significant P-values (P \u3c .05) and determine a trend of those significant values
Physicochemical characterization of the PEG8000-Na2SO4 aqueous two-phase system
The polyethylene glycol-sodium sulfate aqueous two-phase system has been characterized at 23 °C. Tielines
for the phase diagram were obtained experimentally. Phases in equilibrium were characterized by means
of the solvatochromic parameters π*, α, and β, which provide a measurement of the polarity/polarizability
and the H-bond donor and acceptor abilities, respectively. The ability of the phases to participate in hydrophobic
interactions was characterized by means of the free energy of transfer of a methylene group between the
conjugated phases, using the partition of a homologous series of dinitrophenylated amino acids. The results
show the effect of the presence of polymer and salt in the aqueous phase, and a comparison of both phases
with pure water is made.LSRE-PortoUniversidade Católica PortuguesaEscola Superior de Biotecnologia do PortoFundação para a Ciência e a Tecnologia (FCT
Atlas of Maine: Atlantic Salmon Habitat and Conserved Land
This map shows where Maine\u27s Atlantic Salmon habitat intersects with the conservation land throughout the state. It serves as a tool to show how much of the habitat goes unprotected, in turn, aiding the allocation of resources
Editorial Practices in Eighteenth-Century Philadelphia: The Journal of Thomas Chalkley in Manuscript and Print
An Irish Friend and the American Civil War: Some Letters of Frederic W. Pim to His Father in Dublin, 1864
Community art and neighborhood development in Hudson, New York
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2000.Includes bibliographical references (leaves 91-96).Facing disinvestment and unemployment, many places look to culture-based strategies for revitalization. Traditional models of culture-based community revitalization, however, have been criticized for contributing to gentrification, social polarization, and cultural discrimination. Communities seeking to avoid the contradictions of market oriented culture-based revitalization strategies can look to the efforts of community based organizations for models of how culture and the arts can contribute to revitalization without being limited to defining the benefits of their efforts solely in economic terms. In this thesis, I describe the efforts of one arts organization, Time & Space Limited (TSL), as an example of this process. Through an in-depth case study, I describe the role of TSL, a community-based arts organization, in creating an alternative strategy for community revitalization through the arts in Hudson, New York.by Christian Willauer.M.C.P
The Ursinus Weekly, October 15, 1934
Large number of graduates and friends expected back for annual Old Timers\u27 Day • 1935 Ruby staff chosen by editor • Grizzlies downed by St. Joe\u27s, 6-4 • Ursinus to grapple with traditional rival • New grizzly gridder to appear on Friday • Women\u27s Club to hold tea for mothers of students • Torch parade and bonfire celebrate Penn victory • Curtain Club tryouts set for tomorrow evening, 6:30 • Call for candidates issued by men\u27s debating organization • Dr. J. M. Anders secured for med. society speaker • Business group meets • Liberty • Austrian situation discussed by International Relations Club • New officers introduced at WAA business meeting • Brotherhood to inaugurate deputation season Sunday • Panel discussion featured at joint Y.M.-Y.W. meeting • English Club prepares for postponed meeting • English group prepares for annual entertainment • Membership lists issued by intersorority council. • Mock cabinet meeting planned for women\u27s Debating Club • French Club to meet for first time on October 17 • Brian elected president of history - soc. sci. group • Initial math group meeting planned for October 16 • Two sororities merge to form new Omega Chi • Curtis Hall takes lead in interdorm grid league • Frosh prepare for battle with strong Perkiomen team • Men\u27s tennis tournament delayed by bad weather • Fair grizzlies overcome Saturday morning club • Doc. Baker\u27s proteges bow to West Chester teachers • Senior week-end changed from early May to December • Student activities council to post chart of eventshttps://digitalcommons.ursinus.edu/weekly/1969/thumbnail.jp
Impact of multi-stacking and resin type on dimensional stability of dentate casts
ABSTRACT
Objective: To evaluate the effects of multi-stacking and resin type on the dimensional stability of additively
manufactured (AM) dentate casts.
Methods: A master maxillary dentate model file was used to AM casts in a multi-stacked manner, consisting of
four layers (L1–L4), using two different resins (DentaMODEL [DM] and KeyModel Ultra Ivory [KM], n = 10).
Each cast was digitized one day, one week, two weeks, three weeks, four weeks, and three months after fabrication (T0–T5). The scan files were superimposed over the master file to evaluate the dimensional stability of the
casts (anterior, posterior, and entire arch) using the root mean square method. Data were analyzed with a
generalized linear model (α = 0.05).
Results: KM casts had their highest anterior and entire arch deviations when printed at L4 (P < 0.001). DM casts
mostly had lower deviations than KM casts across tested layers and storage durations (P < 0.001). DM casts
showed the highest anterior deviations at T1 and T2, while KM casts showed the highest at T0, T3, and T4 (P ≤
0.009). Casts printed at L4 showed the highest anterior deviations at T0 and greater deviations than L1 at T3 and
T5, regardless of resin (P ≤ 0.044). KM casts had lower entire arch deviations at T5 than at T3 (P = 0.027).
Conclusions: While the differences due to stacking were minimal and clinically negligible, the DM casts mostly
had higher stability. All casts remained within clinically acceptable limits over three months.
Clinical Significance: Multi-stacking during printing may be an efficient method for large-scale of plateless dentate
casts with clinically acceptable dimensional stability for diagnostic and orthodontic use over three months, when
tested resins and three-dimensional printer are used
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