27 research outputs found
Wind, waves, and acoustic background levels at Station ALOHA
Author Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 117 (2012): C03017, doi:10.1029/2011JC007267.Frequency spectra from deep-ocean near-bottom acoustic measurements obtained contemporaneously with wind, wave, and seismic data are described and used to determine the correlations among these data and to discuss possible causal relationships. Microseism energy appears to originate in four distinct regions relative to the hydrophone: wind waves above the sensors contribute microseism energy observed on the ocean floor; a fraction of this local wave energy propagates as seismic waves laterally, and provides a spatially integrated contribution to microseisms observed both in the ocean and on land; waves in storms generate microseism energy in deep water that travels as seismic waves to the sensor; and waves reflected from shorelines provide opposing waves that add to the microseism energy. Correlations of local wind speed with acoustic and seismic spectral time series suggest that the local Longuet-Higgins mechanism is visible in the acoustic spectrum from about 0.4 Hz to 80 Hz. Wind speed and acoustic levels at the hydrophone are poorly correlated below 0.4 Hz, implying that the microseism energy below 0.4 Hz is not typically generated by local winds. Correlation of ocean floor acoustic energy with seismic spectra from Oahu and with wave spectra near Oahu imply that wave reflections from Hawaiian coasts, wave interactions in the deep ocean near Hawaii, and storms far from Hawaii contribute energy to the seismic and acoustic spectra below 0.4 Hz. Wavefield directionality strongly influences the acoustic spectrum at frequencies below about 2 Hz, above which the acoustic levels imply near-isotropic surface wave directionality.Funding for the ALOHA
Cabled Observatory was provided by the National Science Foundation
and the State of Hawaii through the School of Ocean and Earth Sciences
and Technology at the University of Hawaii-Manoa (F. Duennebier, PI).
Donations from AT&T and TYCOM and the cooperation of the U.S. Navy
made this project possible. The WHOI-Hawaii Ocean Time series Station
(WHOTS) mooring is maintained by Woods Hole Oceanographic Institution
(PIs R. Weller and A. Plueddemann) with funding from the NOAA
Climate Program Office/Climate Observation Division. NSF grant OCE-
0926766 supported R. Lukas (co-PI) to augment and collaborate on the
maintenance of WHOTS. Lukas was also supported during this analysis
by The National Ocean Partnership Program âAdvanced Coupled
Atmosphere-Wave-Ocean Modeling for Improving Tropical Cyclone Prediction
Modelsâ under contract N00014-10-1-0154 to the University of
Rhode Island (I. Ginis, PI).2012-09-1
SNX12 Role in Endosome Membrane Transport
In this paper, we investigated the role of sorting nexin 12 (SNX12) in the endocytic pathway. SNX12 is a member of the PX domain-containing sorting nexin family and shares high homology with SNX3, which plays a central role in the formation of intralumenal vesicles within multivesicular endosomes. We found that SNX12 is expressed at very low levels compared to SNX3. SNX12 is primarily associated with early endosomes and this endosomal localization depends on the binding to 3-phosphoinositides. We find that overexpression of SNX12 prevents the detachment (or maturation) of multivesicular endosomes from early endosomes. This in turn inhibits the degradative pathway from early to late endosomes/lysosomes, much like SNX3 overexpression, without affecting endocytosis, recycling and retrograde transport. In addition, while previous studies showed that Hrs knockdown prevents EGF receptor sorting into multivesicular endosomes, we find that overexpression of SNX12 restores the sorting process in an Hrs knockdown background. Altogether, our data show that despite lower expression level, SNX12 shares redundant functions with SNX3 in the biogenesis of multivesicular endosomes
Faith in human right : supports in religious traditions for a global struggle/ Traer
xii, 240 hal. ; 23 c
Doing Ethics In A Diverse World
Nothing is more difficult today than deciding what to do about abortion, gay marriage, economic injustice, war, torture, global warming, euthanasia, capital punishment, and a host of other controversies, particularly in a world in which people of varying religious, cultural, and ethnic backgrounds commonly live side by side. Can we draw on the wisdom of the past to address these contemporary ethical dilemmas? Can we see more clearly how we should consider what is right and wrong, and good and bad, and then work through these divisive problems toward decisions that make sense to us?While challenging moral relativism, Doing Ethics in a Diverse World uses a pluralist approach that draws on religious as well as secular positions and on Eastern as well as Western traditions. The bookâs approach reasons by analogy from the rule of law, including international human rights law, as a means to constructing ethical presumptions about duty, character, relationships, and rights. These presumptions are weighed against the predicted consequences of acting on them, which either confirm the presumptions or support alternative actions. Employing a âWorksheet for Doing Ethicsâ as a guiding framework, this approach is then applied to issues of public morality, health care, economic justice, sex, the war on terrorism, and living ecologically.https://scholar.dominican.edu/books/1016/thumbnail.jp
Oboro 2002-2003
Program of the exhibitions and activities organised by Oboro in 2002-2003. Includes brief descriptions of the projects (provided by the artists, in most cases) with biographical notes, as well as information on the new media labs, on calls for proposals (with floor plan) and on the âoboro.tvâ Website. Includes a list of Oboroâs publications. Texts in French and English
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Lessons from Iowa : development of a 270 megawatt compressed air energy storage project in midwest Independent System Operator : a study for the DOE Energy Storage Systems Program.
The Iowa Stored Energy Park was an innovative, 270 Megawatt, $400 million compressed air energy storage (CAES) project proposed for in-service near Des Moines, Iowa, in 2015. After eight years in development the project was terminated because of site geological limitations. However, much was learned in the development process regarding what it takes to do a utility-scale, bulk energy storage facility and coordinate it with regional renewable wind energy resources in an Independent System Operator (ISO) marketplace. Lessons include the costs and long-term economics of a CAES facility compared to conventional natural gas-fired generation alternatives; market, legislative, and contract issues related to enabling energy storage in an ISO market; the importance of due diligence in project management; and community relations and marketing for siting of large energy projects. Although many of the lessons relate to CAES applications in particular, most of the lessons learned are independent of site location or geology, or even the particular energy storage technology involved
Identification of Interleukin-1 by Functional Screening as a Key Mediator of Cellular Expansion and Disease Progression in Acute Myeloid Leukemia
Secreted proteins in the bone marrow microenvironment play critical roles in acute myeloid leukemia (AML). Through an ex vivo functional screen of 94 cytokines, we identified that the pro-inflammatory cytokine interleukin-1 (IL-1) elicited profound expansion of myeloid progenitors in âŒ67% of AML patients while suppressing the growth of normal progenitors. Levels of IL-1ÎČ and IL-1 receptors were increased in AML patients, and silencing of the IL-1 receptor led to significant suppression of clonogenicity and in vivo disease progression. IL-1 promoted AML cell growth by enhancing p38MAPK phosphorylation and promoting secretion of various other growth factors and inflammatory cytokines. Treatment with p38MAPK inhibitors reversed these effects and recovered normal CD34+ cells from IL-1-mediated growth suppression. These results highlight the importance of ex vivo functional screening to identify common and actionable extrinsic pathways in genetically heterogeneous malignancies and provide impetus for clinical development of IL-1/IL1R1/p38MAPK pathway-targeted therapies in AML