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DTSTART;TZID=America/New_York:20251113T130000
DTEND;TZID=America/New_York:20251113T140000
DTSTAMP:20260410T172307
CREATED:20251107T194106Z
LAST-MODIFIED:20251107T194106Z
UID:10013862-1763038800-1763042400@now.fordham.edu
SUMMARY:Physics & Engineering Physics Colloquium
DESCRIPTION:Join us for a presentation from Stephen Holler\, Ph.D.\, chair and professor of physics and engineering physics\, as he presents “FRESH Air: Beyond Particulate Matter”. \nThe Fordham Regional Environmental Sensor for Healthy Air (FRESH Air) brings together the university community and the Bronx community to monitor and discuss air pollution that adversely affects the city’s poorest borough. Disparities in pollution exposure cut along socio-economic lines and lead to disparities in health outcomes. The Bronx has the highest rates of asthma in New York City and accounts for 24% of all asthma-related deaths statewide. Chronic exposure to high levels of particulate matter (PM)\, especially fine PM\, can lead to inflammation and the development of respiratory and cardiovascular disease. However\, harmful pollution comes in more varieties than just PM. Methane\, the principal component in natural gas used for cooking and heating\, is not only a potent greenhouse gas but also a precursor to ground-level ozone\, which can exacerbate asthma and other respiratory diseases. More than 4\,300 asthma-related emergency department visits occur each year in New York City (32% of those cases originate in the Bronx)\, costing no less than $2.3 million. Our recent expansion of FRESH Air maps methane concentrations around NYC\, with a primary focus on the Bronx. In addition to a background level at least 5% greater than the global mean atmospheric methane (GMAM) level\, we note areas that are consistently 20% greater than the GMAM. This presentation will focus on the distributed methane measurements and corresponding PM measurements\, and their impacts.
URL:https://now.fordham.edu/event/physics-engineering-physics-colloquium-25/
LOCATION:Freeman 105\, 441 East Fordham Road\, Bronx\, NY\, 10458\, United States
CATEGORIES:Lectures
ORGANIZER;CN="Stephen Holler":MAILTO:sholler@fordham.edu 
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251023T130000
DTEND;TZID=America/New_York:20251023T140000
DTSTAMP:20260410T172307
CREATED:20251017T164421Z
LAST-MODIFIED:20251017T164421Z
UID:10013817-1761224400-1761228000@now.fordham.edu
SUMMARY:Physics & Engineering Physics Colloquia
DESCRIPTION:Zeke Mohammed\, FCRH 2026\, Engineering Physics Major\, will present “Meson Mass Calculations in Lattice QCD Using SU(2) Gauge Theory”. \nAbstract: Quantum Chromodynamics (QCD) describes the strong nuclear force but\nbecomes strongly coupled at low energies where perturbative methods fail. Lattice QCD\nresolves this by discretizing spacetime into a finite grid\, transforming the quantum field\ntheory into a computationally tractable problem. This work implements SU(2) gauge\ntheory—a simplified two-color version of QCD that preserves essential non-perturbative\nphenomena like confinement and asymptotic freedom—to calculate light meson masses\nincluding the pion\, rho\, and sigma. \nWe employ Monte Carlo methods with the Wilson gauge action to generate thermalized\ngauge field configurations and solve the discretized Dirac equation for quark\npropagators. Meson masses are extracted from the exponential decay of correlation\nfunctions\, with statistical uncertainties determined through jackknife analysis.\nCalculations span multiple lattice volumes (44 to 83×16) and quark mass parameters to\nsystematically study mass hierarchies and chiral symmetry breaking. Our results\nsuccessfully reproduce expected mass ordering (mπ < mρ) and demonstrate how\nconfinement emerges from gauge dynamics to bind quarks into hadrons\, providing\nquantitative insights into non-perturbative QCD phenomena. \nMatthew Smith\, FCRH 2027\, Physics Major\, will present: “Pion Masses and Taste Splitting at Coarse Lattice Spacings”. \nAbstract: On the lattice taste splitting of pions should be degenerate at O(a2). It is shown\,\nhowever\, that corrections of order O(a4 ) are required to describe the observed masses.\nThis project attempted to extract the masses of the pions on a coarse lattice by\nuncorrelated\, correlated\, and blocked-correlated fits to evaluate discrepancies of the\ntheory. Data from 5001 configurations and a lattice temporal dimension of 48 was used.\nWhile the pseudo-scalar pion’s mass was able to be extracted\, the vector\, scalar\, axial\nvector\, and tensor tastes had significant errors. It is shown that these coarse lattices\nintroduced large errors as well as oscillatory “opposite-parity” contributions to the\ncorrelators\, complicating mass extractions. Newer lattice simulations\, however\, show\npromising results for the non-goldstone pions while still having some complications from\nlarge lattice spacings.
URL:https://now.fordham.edu/event/physics-engineering-physics-colloquia-2/
LOCATION:Freeman 105\, 441 East Fordham Road\, Bronx\, NY\, 10458\, United States
CATEGORIES:Lectures
ORGANIZER;CN="Professor Stephen Holler":MAILTO:sholler@fordham.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251002T130000
DTEND;TZID=America/New_York:20251002T140000
DTSTAMP:20260410T172307
CREATED:20250926T182759Z
LAST-MODIFIED:20250926T182759Z
UID:10013754-1759410000-1759413600@now.fordham.edu
SUMMARY:Physics & Engineering Physics Colloquia
DESCRIPTION:Ernesto (Trey) Feliciano\, Physics Major\, FCRH 2026 will present: “Mucin and Polyvinylpyrrolidone Solutions Affect E. coli Motility” \nAbstract: Knowledge about how bacteria move through viscoelastic media can be helpful in\nunderstanding how they move through medical solutions using such media or move\nthrough mucus to infect humans. \nPrevious research has been conducted on how they collectively move through synthetic\nmucus\, polyvinylpyrrolidone (PVP) solutions\, and media mimicked by carboxylate\nmicrospheres. Research about the individual cell movements in synthetic mucous has\nnot yet been intensively observed. The kinematics of the individual cells of a certain\nmotile strain of E. coli through various concentrations of viscoelastic media\, including\nartificial mucus and PVP solutions\, were observed in this project.\nResults showed that certain concentrations of mucin in mucus aid bacterial motility\,\nwhereas high concentrations of mucin inhibit it. For PVP\, velocity remains relatively\nconstant until it decreases at higher concentrations. By understanding how\nconcentrations of viscoelastic fluids affect bacterial motion\, knowledge about why the\nhuman body secretes more mucous along the respiratory tract during infections or\nabout what qualities of viscoelastic medical solutions are ideal for usage can be\nenhanced. \nJenna Cain\, Engineering Physics Major\, FCRH 2026 will present: “Optimizing Geometric Fill Factor and Interconnection Between Thermophotovoltaic(TPV) Cells on a Tile”. \nAbstract: Thermophotovoltaic (TPV) cells convert high-temperature thermal radiation (1\,000–\n2\,000 °C) from an emitter directly into electricity\, resulting in power densities up to 500 times\ngreater than a conventional solar cell. Advancements in TPVs at the University of Michigan over\nthe past decade have led to the development of the Air-Bridge TPV\, which has a world-record\nefficiency of 44%\, and is being scaled up for implementation in thermal batteries. To scale up\nsingle cells into functional panels\, many cells must be interconnected into one electrical system\non a tile (4″ growth substrate). Here\, I developed an interconnection process for TPV cells that\nminimizes the spacing between cells to maximize the amount of active area\, or the geometric fill\nfactor\, for a tile. In our approach\, we use simple resistor-mesas to replicate the width and height\nof the target TPV cells and aim to interconnect the top contact and bottom contact on adjacent\nmesas (3 μm step height). We use a polyimide passivation film that serves as an insulating barrier\nbetween the active regions of the devices and the conductive interconnects. In this work\, I\ndemonstrate that a 1 μm polyimide film provides sufficient sidewall coverage to enable\ninterconnections between mesas separated by as little as 45 μm. Optimal curing temperature of\n350°C and time of 1 hour was determined by monitoring the diminishing anhydride group of\npolyimide precursor via Fourier Transform Infrared Spectroscopy. Successful interconnection was\ndemonstrated by patterning 1 μm silver interconnections between resistors and measuring the\ncumulative resistance for each string of interconnected resistors. For all mesa spacings – 45 μm\nto 500 μm – successful interconnection was demonstrated. Future work will explore\ninterconnection across shorter distances to continue optimizing geometric fill factor.
URL:https://now.fordham.edu/event/physics-engineering-physics-colloquia/
LOCATION:Freeman 105\, 441 East Fordham Road\, Bronx\, NY\, 10458\, United States
CATEGORIES:Lectures
ORGANIZER;CN="Dr. Stephen Holler":MAILTO:sholler@fordham.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20180314T143000
DTEND;TZID=America/New_York:20180314T143000
DTSTAMP:20260410T172307
CREATED:20180313T141059Z
LAST-MODIFIED:20180313T141059Z
UID:10006380-1521037800-1521037800@now.fordham.edu
SUMMARY:Brain Trauma and College Athletics
DESCRIPTION:Join us to hear from the physicians and trainers who treat our athletes. They will explore the significance of high-impact sports and discuss how to keep our athletes safe. The presentation will be followed by audience questions and a panel discussion. \nFeatured Speakers\nDr. J.M. Noble: Columbia University\, Department of Neurology\nDawn Purington: Head Trainer\, Fordham Athletics \nThis event is cosponsored by the Departments of Natural Sciences; African & African American Studies; American Studies; Communications; English; Integrative Neurosciences; Modern Languages; Psychology; Theology; and Women\, Gender and Sexuality Studies; the FCLC Science Club; and the FCRH Integrative Neuroscience Student Association.
URL:https://now.fordham.edu/event/brain-trauma-college-athletics/
LOCATION:Freeman 105\, 441 East Fordham Road\, Bronx\, NY\, 10458\, United States
CATEGORIES:Lectures
ORGANIZER;CN="Jason Morris":MAILTO:cjamorris@fordham.edu
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