Episodic Tremor and Slip in the Pacific Northwest

Every 14 months the Pacific Northwest experiences slow slip on a fault that is the equivalent of about a magnitude 6.5 earthquake. While a typical earthquake of this magnitude happens in less than 10 seconds, the duration of these slip events is two to several weeks. The most recent event occurred from January 14 through February 1, 2007

Development of Field Excavator with Embedded Force Measurement

A semi-intelligent excavation mechanism was developed for use with the NASA-built Centaur 2 rover prototype. The excavator features a continuously rotatable large bucket supported between two parallel arms, both of which share a single pivot axis near the excavator base attached to the rover. The excavator is designed to simulate the collection of regolith, such as on the Moon, and to dump the collected soil into a hopper up to one meter tall for processing to extract oxygen. Because the vehicle can be autonomous and the terrain is generally unknown, there is risk of damaging equipment or using excessive power when attempting to extract soil from dense or rocky terrain. To minimize these risks, it is critical for the rover to sense the digging forces and adjust accordingly. It is also important to understand the digging capabilities and limitations of the excavator. This paper discusses the implementation of multiple strain gages as an embedded force measurement system in the excavator's arms. These strain gages can accurately measure and resolve multi-axial forces on the excavator. In order to validate these sensors and characterize the load capabilities, a series of controlled excavation tests were performed at Glenn Research Center with the excavator at various depths and cut angles while supported by a six axis load cell. The results of these tests are both compared to a force estimation model and used for calibration of the embedded strain gages. In addition, excavation forces generated using two different types of bucket edge (straight vs. with teeth) were compared

The Ursinus Weekly, December 12, 1955

Dr. Gilbert Bayne, an Ursinus graduate, speaks tonight • Ursinus Women\u27s Club offers gift • Payments due this week on 1956 Ruby • Meistersingers first performance a success • WSGA, MSGA plan Christmas dance for Wed. evening • Contest begun by Chesterfield Co. • Chess team opens season by defeating F&M, 4 to 1 • Drum, Levin, Earle, Fretz, Blood honored at senior prom Friday night • Carol sings and worship programs highlight Y Christmas activities • Debaters split in recent events • Members chosen for Pi Nu Epsilon • Fraternity row • Chi Alpha to hold service Thursday • Editorial: What is thinking? • Student opinion varies on how to spend an ideal Christmas vacation • Living on a Christian campus • Letters to the editor • Two suggestions are offered to cure insomnia at Ursinus • New faces in starting spots aid Bruins; Shoes hopeful • Ursinus Cubs open against F&M Tues. • Bruin cagers cop initial win over Nat. Aggies 63-55 • Bears\u27 hide carried home by Indians in tight 80-64 win • Champs return to help racket squad • Bell towerhttps://digitalcommons.ursinus.edu/weekly/1440/thumbnail.jp

LITHIUM SALTS OF FLUORINATED BORATE ESTERS FOR LITHIUM-ION BATTERIES

Lithium salts with fluorinated chelated orthoborate anions are prepared and used as electrolytes or electrolyte additives in lithium-ion batteries. The lithium salts have two chelate rings formed by the coordination of two bidentate ligands to a single boron atom. In addition, each chelate ring has two oxygen atoms bonded to one boron atom, methylene groups bonded to the two oxygen atoms, and one or more fluorinated carbon atoms bonded to and forming a cyclic bridge between the methylene groups

The Ursinus Weekly, December 12, 1955

Dr. Gilbert Bayne, an Ursinus graduate, speaks tonight • Ursinus Women\u27s Club offers gift • Payments due this week on 1956 Ruby • Meistersingers first performance a success • WSGA, MSGA plan Christmas dance for Wed. evening • Contest begun by Chesterfield Co. • Chess team opens season by defeating F&M, 4 to 1 • Drum, Levin, Earle, Fretz, Blood honored at senior prom Friday night • Carol sings and worship programs highlight Y Christmas activities • Debaters split in recent events • Members chosen for Pi Nu Epsilon • Fraternity row • Chi Alpha to hold service Thursday • Editorial: What is thinking? • Student opinion varies on how to spend an ideal Christmas vacation • Living on a Christian campus • Letters to the editor • Two suggestions are offered to cure insomnia at Ursinus • New faces in starting spots aid Bruins; Shoes hopeful • Ursinus Cubs open against F&M Tues. • Bruin cagers cop initial win over Nat. Aggies 63-55 • Bears\u27 hide carried home by Indians in tight 80-64 win • Champs return to help racket squad • Bell towerhttps://digitalcommons.ursinus.edu/weekly/1440/thumbnail.jp

A controlled experiment in visual education in general science

Not Available.Max C. McCowenNot ListedNot ListedMaster of ScienceDepartment Not ListedCunningham Memorial library, Terre Haute, Indiana State University.isua-thesis-1938-mccowen.pdfMastersTitle from document title page. Document formatted into pages: contains 59p. : ill. Includes appendix and bibliography

SKS Splitting Beneath Mount St. Helens: Constraints on Subslab Mantle Entrainment

Observations of seismic anisotropy can provide direct constraints on the character of mantleflow in subduction zones, critical for our broader understanding of subduction dynamics. Here wepresent over 750 new SKS splitting measurements in the vicinity of Mount St. Helens in the Cascadiasubduction zone using a combination of stations from the iMUSH broadband array and Cascades VolcanoObservatory network. This provides the highest density of splitting measurements yet available inCascadia, acting as a focused“telescope”for seismic anisotropy in the subduction zone. We retrieve spatiallyconsistent splitting parameters (mean fast directionΦ: 74°, mean delay time∂t: 1.0 s) with the azimuthaloccurrence of nulls in agreement with the fast direction of splitting. When averaged across the array, a90° periodicity in splitting parameters as a function of back azimuth is revealed, which has not beenrecovered previously with single‐station observations. The periodicity is characterized by a sawtooth patterninΦwith a clearly defined 45° trend. We present new equations that reproduce this behavior based uponknown systematic errors when calculating shear wave splitting from data with realistic seismic noise.The corrected results suggest a single layer of anisotropy with an ENE‐WSW fast axis parallel to the motionof the subducting Juan de Fuca plate; in agreement with predictions for entrained subslab mantleflow. Thesplitting pattern is consistent with that seen throughout Cascadia, suggesting that entrainment of theunderlying asthenosphere with the subducting slab is coherent and widespread.The broadband seismic component of the iMUSH project was supported by National Science Foundation grants EAR‐1144568, EAR‐1144351, EAR‐1460291, and EAR‐1444275. CME acknowledges support from the Australian Research Council (DE190100062). We thank the 2017 IRIS undergraduate summer intern program for providing support to A. W. to work with E. A. W. at the University of Washington. The facilities of IRIS Data Services, and specifically the IRIS Data Management Center, were used for access to waveforms, related metadata, and/or derived products used in this study. IRIS Data Services are funded through the Seismological Facilities for the Advancement of Geoscience and EarthScope (SAGE) Proposal of the National Science Foundation under Cooperative Agreement EAR‐1261681

The Ursinus Weekly, October 10, 1932

Colleges to debate war debt cancellation • Y.M.C.A. sponsors freshman discussion groups • Grizzly gridders register season\u27s initial victory; down Dickinson 7-0 • Frosh eleven defeats Williamson Trade, 6-0 • Students express attitude on current problems • Alumni athletic club making membership drive • Social events planned by student activities council • Woman\u27s Club to meet in girls\u27 day study, Sat. • Presidential campaign planned by YWCA • Numerous candidates for hockey berths • Exec. com. of alumni ass\u27n. to meet in library, Sat. • Glee Club to participate in Norristown program • Harriers meet F. and M. Sat., Villanova event postponed • Women\u27s debating club meets at Glenwood • Pre-medical society outlines activities • Scholarship fund, memorial to J. L. Alexander, D.D., \u2701 • Rev. Lentz speaker at YMCA meeting • Dr. Barnard lectures to Shenandoah teachers • Inter-fraternity council discusses rushing , ball • Rhodes scholarship regulations announced • Freshman girls hear talk on campus manners • Curtain Club resumes dramatic activities • Former bears address enthusiastic pep meeting • Officers elected by inter-sorority councilhttps://digitalcommons.ursinus.edu/weekly/2031/thumbnail.jp

Non-invasive imaging of high-risk coronary plaque: the role of computed tomography and positron emission tomography

Despite recent advances, cardiovascular disease remains the leading cause of death globally. As such, there is a need to optimise our current diagnostic and risk stratification pathways in order to better deliver individualised preventative therapies. Non-invasive imaging of coronary artery plaque can interrogate multiple aspects of coronary atherosclerotic disease, including plaque morphology, anatomy and flow. More recently, disease activity is being assessed to provide mechanistic insights into in vivo atherosclerosis biology. Molecular imaging using positron emission tomography is unique in this field, with the potential to identify specific biological processes using either bespoke or re-purposed radiotracers. This review provides an overview of non-invasive vulnerable plaque detection and molecular imaging of coronary atherosclerosis

A single nucleotide polymorphism in the p27Kip1 gene is associated with primary patency of lower extremity vein bypass grafts

ObjectiveFactors responsible for the variability in outcomes after lower extremity vein bypass grafting (LEVBG) are poorly understood. Recent evidence has suggested that a single nucleotide polymorphism (SNP) in the promoter region of the p27Kip1 gene, a cell-cycle regulator, is associated with coronary in-stent restenosis. We hypothesized an association with vein graft patency.MethodsThis was a retrospective genetic association study nested within a prospective cohort of 204 patients from three referral centers undergoing LEVBG for claudication or critical ischemia. The main outcome measure was primary vein graft patency.ResultsAll patients were followed up for a minimum of 1 year with duplex graft surveillance (median follow-up, 893 days; interquartile range, 539-1315). Genomic DNA was isolated and SNP analysis for the p27Kip1-838C>A variants was performed. Allele frequencies were correlated with graft outcome using survival analysis and Cox proportional hazards modeling. The p27Kip1-838C>A allele frequencies observed were CA, 53%; CC, 30%; and AA, 17%, satisfying Hardy-Weinberg equilibrium. Race (P = .025) and history of coronary artery disease (P = .027) were different across the genotypes; all other baseline variables were similar. Primary graft patency was greater among patients with the -838AA genotype (75% AA vs 55% CA/CC at 3 years; P = .029). In a Cox proportional hazards model including age, sex, race, diabetes, critical limb ischemia, redo (vs primary) bypass, vein type, and baseline C-reactive protein level, the p27Kip1-838AA genotype was significantly associated with higher graft patency (hazard ratio for failure, 0.4; 95% confidence interval, 0.17-0.93). Genotype was also associated with early (0-1 month) changes in graft lumen diameter by ultrasound imaging.ConclusionsThese data suggest that the p27Kip1-838C>A SNP is associated with LEVBG patency and, together with previous reports, underscore a central role for p27Kip1 in the generic response to vascular injury