Synthesis of Complex Gold Nanostructures via Seeded Growth

Gold nanostructures have a wide variety of applications in sensors, catalysis, biological, and medical applications due to their optical properties, high surface area-volume ratios, and high electrical conductivity. Specifically, complex gold nanostructures will have unique optical properties that will yield valuable sensors. Spherical, rod-like, and star shaped gold nanostructures have been previously synthesized by reducing a gold salt in the presence of a variety of stabilizing agents. These methods utilize a seeded growth method. From a spherical seeds, rod-like particles have been created which will then be utilized as the seeds for further growth. Selective adsorption and leveraging crystal structure should allow for the ends of the nanorods to be grown and bifurcated, leading to spiked growth on both ends of the nanorods. Therefore, it is theorized that spiky dumbbell shaped nanostructures can be formed, yielding a novel optical response. The following research lays the groundwork by creating each intermediate step in this theorized synthesis process, leaving the combination of each step to be further investigated

Impacting Student Learning Outcomes by Addressing Basic Needs of Students and Their Families

The purpose of this school improvement project was to identify how an urban elementary school could impact student learning outcomes by addressing basic needs unmet for children and their families. This was accomplished by first identifying and researching areas of basic needs commonly lacking for families of an elementary school with a high density of need. Next, how to assist families in meeting these needs via community resources and programs was researched and discussed. An existing annual school community building event was expanded to address these needs in a low pressure, familiar environment for school families. Several local community organizations were present with booths at the event allowing families opportunity to learn about services and programs available to meet their basic needs. Families basic needs improving will allow for a more positive relationship with school as well as improvement of student learning outcomes

Suburban Satellite Health Care Facilities Limit Access for Low-Income Patients

Introduction: Low income individuals are faced with numerous barriers to health care that can lead to worse health outcomes. Limited access to transportation, in particular, has been linked to lower rates of doctor’s visits and consequently, a greater burden of disease. Community agencies such as Safe Harbor (SH), the Community Health Center (CHC), and the Committee on Temporary Shelter (COTS) in Burlington, Vermont reported the move of many ambulatory care practices from Fletcher Allen Hospital, located on a citywide bus route, to Tilley Drive, which was not located on a bus route, as a significant barrier for their patients.https://scholarworks.uvm.edu/comphp_gallery/1016/thumbnail.jp

The Thinking Space: The Café as a Cultural Institution in Paris, Italy and Vienna

Book review

The Devil in the Detail: An Introduction to Decadent Occultism from the Editors

The double meaning of ‘occult’ refers to the secret and the supernatural, and, just as ‘Decadent’ was both a pejorative term and a badge of honour in the nineteenth century, accusations of affiliation with the dark arts are being re-appropriated and celebrated by marginalized groups. The historical association of the occult with non-normativity and transgression means it has particular significance as a form of protest or protection in today’s era of ‘small-d’ decadence. There has been a recent extreme political swerve to the right, climate change denial threatens to end the world as we know it, and social media platforms are subject to deep corruption and involvement in a neo-Cold War, but bubbling under this surface is a queer rebellion associated with witchcraft and occult magick.

Prototype ATLAS IBL Modules using the FE-I4A Front-End Readout Chip

The ATLAS Collaboration will upgrade its semiconductor pixel tracking detector with a new Insertable B-layer (IBL) between the existing pixel detector and the vacuum pipe of the Large Hadron Collider. The extreme operating conditions at this location have necessitated the development of new radiation hard pixel sensor technologies and a new front-end readout chip, called the FE-I4. Planar pixel sensors and 3D pixel sensors have been investigated to equip this new pixel layer, and prototype modules using the FE-I4A have been fabricated and characterized using 120 GeV pions at the CERN SPS and 4 GeV positrons at DESY, before and after module irradiation. Beam test results are presented, including charge collection efficiency, tracking efficiency and charge sharing.Comment: 45 pages, 30 figures, submitted to JINS

Inclusive search for same-sign dilepton signatures in pp collisions at root s=7 TeV with the ATLAS detector

An inclusive search is presented for new physics in events with two isolated leptons (e or mu) having the same electric charge. The data are selected from events collected from p p collisions at root s = 7 TeV by the ATLAS detector and correspond to an integrated luminosity of 34 pb(-1). The spectra in dilepton invariant mass, missing transverse momentum and jet multiplicity are presented and compared to Standard Model predictions. In this event sample, no evidence is found for contributions beyond those of the Standard Model. Limits are set on the cross-section in a fiducial region for new sources of same-sign high-mass dilepton events in the ee, e mu and mu mu channels. Four models predicting same-sign dilepton signals are constrained: two descriptions of Majorana neutrinos, a cascade topology similar to supersymmetry or universal extra dimensions, and fourth generation d-type quarks. Assuming a new physics scale of 1 TeV, Majorana neutrinos produced by an effective operator V with masses below 460 GeV are excluded at 95% confidence level. A lower limit of 290 GeV is set at 95% confidence level on the mass of fourth generation d-type quarks

Measurement of the top quark-pair production cross section with ATLAS in pp collisions at \sqrt{s}=7\TeV

A measurement of the production cross-section for top quark pairs(\ttbar) in $pp$ collisions at \sqrt{s}=7 \TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron $e$ or muon $\mu$) with large missing transverse energy and at least four jets, and dilepton ($ee$, $\mu\mu$ or $e\mu$) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb-1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-\ttbar Standard Model processes are estimated using data-driven methods and determined to be $12.2 \pm 3.9$ events and $2.5 \pm 0.6$ events, respectively. The kinematic properties of the selected events are consistent with SM \ttbar production. The inclusive top quark pair production cross-section is measured to be \sigmattbar=145 \pm 31 ^{+42}_{-27} pb where the first uncertainty is statistical and the second systematic. The measurement agrees with perturbative QCD calculations.Comment: 30 pages plus author list (50 pages total), 9 figures, 11 tables, CERN-PH number and final journal adde

Standalone vertex finding in the ATLAS muon spectrometer

A dedicated reconstruction algorithm to find decay vertices in the ATLAS muon spectrometer is presented. The algorithm searches the region just upstream of or inside the muon spectrometer volume for multi-particle vertices that originate from the decay of particles with long decay paths. The performance of the algorithm is evaluated using both a sample of simulated Higgs boson events, in which the Higgs boson decays to long-lived neutral particles that in turn decay to bbar b final states, and pp collision data at √s = 7 TeV collected with the ATLAS detector at the LHC during 2011