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Articles 1 - 30 of 43
Full-Text Articles in Physical Sciences and Mathematics
Analysis Of Water Quality In New Jersey, Kaitlyn Scrudato
Analysis Of Water Quality In New Jersey, Kaitlyn Scrudato
Theses, Dissertations and Culminating Projects
Numerous diseases can occur when swimming or fishing in contaminated water. It is important that the quality of water is being monitored prior to recreational activities. To model the quality of the water at any given time with available predictors, data from bodies of water across New Jersey from 1999 to 2013 was collected from the database STORET. The water quality parameters studied were Escherichia coli (E. coli) and enterococcus with the predictors as Dissolved oxygen (DO), pH, Salinity, Temperature, Total Dissolved Solids (TDS) and Total Suspended Solids (TSS). The data was broken down by habitat type. The habitat types …
Hemodynamic Analysis Of Fast And Slow Aneurysm Occlusions By Flow Diversion In Rabbits, Bong Jae Chung, Fernando Mut, Ramanathan Kadirvel, Ravi Lingineni, David F. Kallmes, Juan R. Cebral
Hemodynamic Analysis Of Fast And Slow Aneurysm Occlusions By Flow Diversion In Rabbits, Bong Jae Chung, Fernando Mut, Ramanathan Kadirvel, Ravi Lingineni, David F. Kallmes, Juan R. Cebral
Department of Applied Mathematics and Statistics Faculty Scholarship and Creative Works
Purpose: To assess hemodynamic differences between aneurysms that occlude rapidly and those occluding in delayed fashion after flow diversion in rabbits. Methods: Thirty-six elastase-induced aneurysms in rabbits were treated with flow diverting devices. Aneurysm occlusion was assessed angiographically immediately before they were sacrificed at 1 (n=6), 2 (n=4), 4 (n=8) or 8 weeks (n=18) after treatment. The aneurysms were classified into a fast occlusion group if they were completely or near completely occluded at 4 weeks or earlier and a slow occlusion group if they remained incompletely occluded at 8 weeks. The immediate post-treatment flow conditions in aneurysms of each …
Numerical Analysis Of Groundwater Flow And Potential In Parts Of A Crystalline Aquifer System In Northern Ghana, Sandow Mark Yidana, Clement Alo, M. O. Addai, O. F. Fynn, S. K. Essel
Numerical Analysis Of Groundwater Flow And Potential In Parts Of A Crystalline Aquifer System In Northern Ghana, Sandow Mark Yidana, Clement Alo, M. O. Addai, O. F. Fynn, S. K. Essel
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
The groundwater flow system in a crystalline aquifer system in parts of Northern Ghana was simulated and calibrated under steady-state conditions. The objective was to estimate the regional distribution of a key aquifer hydraulic parameter (the hydraulic conductivity) and recharge and also to predict possible effects of different abstraction and groundwater recharge scenarios on the sustainability of groundwater resources in the area. The study finds that the hydraulic conductivity field is quite homogeneous and has values ranging between 1.70 and 2.24 m/day. There is an apparent dominance of regional groundwater flow systems compared to local flow systems. This is probably …
Searches For Continuous Gravitational Waves From Nine Young Supernova Remnants, J. Aasi, B. P. Abbott, R. Abbott, T. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, Marc Favata, Shaon Ghosh, Rodica Martin
Searches For Continuous Gravitational Waves From Nine Young Supernova Remnants, J. Aasi, B. P. Abbott, R. Abbott, T. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, Marc Favata, Shaon Ghosh, Rodica Martin
Department of Physics and Astronomy Faculty Scholarship and Creative Works
We describe directed searches for continuous gravitational waves (GWs) in data from the sixth Laser Interferometer Gravitational-wave Observatory (LIGO) science data run. The targets were nine young supernova remnants not associated with pulsars; eight of the remnants are associated with non-pulsing suspected neutron stars. One target's parameters are uncertain enough to warrant two searches, for a total of 10. Each search covered a broad band of frequencies and first and second frequency derivatives for a fixed sky direction. The searches coherently integrated data from the two LIGO interferometers over time spans from 5.3-25.3 days using the matched-filtering -statistic. We found …
Global Warming And The End-Permian Extinction Event: Proxy And Modeling Perspectives, Ying Cui, Lee R. Kump
Global Warming And The End-Permian Extinction Event: Proxy And Modeling Perspectives, Ying Cui, Lee R. Kump
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
The mass extinction event that occurred at the close of the Permian Period (~252million years ago) represents the most severe biodiversity loss in the ocean of the Phanerozoic. The links between the global carbon cycle, climate change and mass extinction are complex and involve a whole range of often inter-related geochemical, biological, ecologic and climatic factors. It has become widely accepted that the end-Permian mass extinction was associated with a global warming event, because the age of the Siberian Trap eruption, a potentially massive source of carbon dioxide, coincides within error with the extinction event. However, geologic data that are …
Wall Mechanical Properties And Hemodynamics Of Unruptured Intracranial Aneurysms, J. R. Cebral, X. Duan, Bong Jae Chung, C. Putman, Khaled Aziz, A. M. Robertson
Wall Mechanical Properties And Hemodynamics Of Unruptured Intracranial Aneurysms, J. R. Cebral, X. Duan, Bong Jae Chung, C. Putman, Khaled Aziz, A. M. Robertson
Department of Applied Mathematics and Statistics Faculty Scholarship and Creative Works
BACKGROUND AND PURPOSE: Aneurysm progression and rupture is thought to be governed by progressive degradation and weakening of the wall in response to abnormal hemodynamics. Our goal was to investigate the relationship between the intra-aneurysmal hemodynamic conditions and wall mechanical properties in human aneurysms. MATERIALS AND METHODS: A total of 8 unruptured aneurysms were analyzed. Computational fluid dynamics models were constructed from preoperative 3D rotational angiography images. The aneurysms were clipped, and the domes were resected and mechanically tested to failure with a uniaxial testing system under multiphoton microscopy. Linear regression analysis was performed to explore possible correlations between hemodynamic …
A Framework For Inferring Unobserved Multistrain Epidemic Subpopulations Using Synchronization Dynamics, Eric Forgoston, Leah B. Shaw, Ira B. Schwartz
A Framework For Inferring Unobserved Multistrain Epidemic Subpopulations Using Synchronization Dynamics, Eric Forgoston, Leah B. Shaw, Ira B. Schwartz
Department of Applied Mathematics and Statistics Faculty Scholarship and Creative Works
A new method is proposed to infer unobserved epidemic subpopulations by exploiting the synchronization properties of multistrain epidemic models. A model for dengue fever is driven by simulated data from secondary infective populations. Primary infective populations in the driven system synchronize to the correct values from the driver system. Most hospital cases of dengue are secondary infections, so this method provides a way to deduce unobserved primary infection levels. We derive center manifold equations that relate the driven system to the driver system and thus motivate the use of synchronization to predict unobserved primary infectives. Synchronization stability between primary and …
Effects Of Allosteric Mutations On Dihydrofolate Reductase, Marian Okondo
Effects Of Allosteric Mutations On Dihydrofolate Reductase, Marian Okondo
Theses, Dissertations and Culminating Projects
Dihydrofolate reductase (DHFR) is an essential enzyme necessary in the synthesis of DNA precursors. DHFR acquires resistance to numerous known anti-folates and this has led to the continuous need to discover novel and selective DHFR inhibitors. Allosteric mutations on Bacillus stearothermophilus (Bs.) DHFR were previously found to alter inhibitor binding and specificity. In this work, we investigate how these mutations affect the conformational motions of DHFR associated with inhibitor binding. Two distal allosteric mutations, isoleucine at position 86 to alanine (I86A) and tyrosine at position 127 to alanine (Y127A) were separately introduced to C73A/S131C, a previously modified wild type DHFR …
A Topographic And Lithologic Analysis Of The Kittatinny Ridge And Their Implications For Appalachian Erosional History, David Carl Sharpe
A Topographic And Lithologic Analysis Of The Kittatinny Ridge And Their Implications For Appalachian Erosional History, David Carl Sharpe
Theses, Dissertations and Culminating Projects
The eastern-most ridge of the Appalachian Mountains, Kittatinny Ridge, extends from New York State south to West Virginia. The ridge is composed of erosion-resistant quartzite conglomerate throughout (Shawangunk Formation, Tuscarora Formation) underlain by sandstone, siltstone, slate and shale (Martinsburg Formation, Juniata Formation). The relatively consistent lithology of the Kittatinny Ridge makes it ideal for analyzing how variations in climate, glacial history and other topographic influences have impacted long-term erosion along the ridge. This project analyzed the lithologic consistency and topography of the Kittatinny Ridge at different locations and what geomorphological implications the results might have. Rock samples of the Shawangunk …
Biogeochemical Studies Of Metal Uptake And Transportation In Plants On An Urban Brownfield, Yu Qian
Biogeochemical Studies Of Metal Uptake And Transportation In Plants On An Urban Brownfield, Yu Qian
Theses, Dissertations and Culminating Projects
Soil metal contamination has been a concern due to the potential ecological and human health risks. In order to assist with the management and sustainable restoration of vegetated metal contaminated land, this dissertation targets at understanding the biogeochemical processes that control the assimilation of metals by plants on urban costal brownfield soils. The dissertation includes: i) micro-scale measurement of metal spatial distribution and speciation using synchrotron techniques to investigate the mechanism of metal uptake and translocation in roots based on the association between metal localizations in plant roots, ii) study on the biogeochemical factors that control plant metal assimilation efficiency …
Changes In Tall Shrub Abundance On The North Slope Of Alaska, 2000-2010, Rocio Raquel Duchesne-Onoro
Changes In Tall Shrub Abundance On The North Slope Of Alaska, 2000-2010, Rocio Raquel Duchesne-Onoro
Theses, Dissertations and Culminating Projects
The observed greening of Arctic vegetation and the expansion of shrubs in the last few decades has likely had profound implications for the tundra ecosystem, including feedbacks to climate. Uncertainty surrounding the magnitude, direction, and implications of this vegetation shift calls for monitoring of vegetation structural parameters, such as fractional cover of shrubs. Due to the extent of the North Slope of Alaska and its extreme environments, remote sensing may be the most suitable tool to produce wall-to-wall fractional shrub cover maps for the entire region, however, most regional maps have relied on vegetation indices or needed many years worth …
Kdv Solitons In Direct Numerical Simulation Of The Navier-Stokes Equation, Jake Dynes
Kdv Solitons In Direct Numerical Simulation Of The Navier-Stokes Equation, Jake Dynes
Theses, Dissertations and Culminating Projects
Tracking the behavior of an interface present between two fluids is critical to a wide array of different fields. Much can be learned through lab work and experimentation, however there are many limitations involved. Solving the Navier-Stokes equations with interfaces is very difficult, and in many cases intractable. One way to combat this is to make assumptions to help reduce the equation (e.g. KdV), and make it more easily studied. An entirely different approach is to use Direct Numerical Simulation on the N-S equation, weather it be by use of front-tracking, VOF, etc. In this thesis, we compare these two …
Scrap Tire And Water Treatment Residual As Novel "Green" Sorbents For Removal Of Common Metals From Polluted Storm Water Runoff, Ciapha Nade Morris
Scrap Tire And Water Treatment Residual As Novel "Green" Sorbents For Removal Of Common Metals From Polluted Storm Water Runoff, Ciapha Nade Morris
Theses, Dissertations and Culminating Projects
Although urbanization brings numerous benefits in our history, it has caused many environmental issues such as polluted urban runoff. A variety of pollutants at high concentrations, such as heavy metals, are present in urban runoff. Given that the polluted runoff is finally discharged into receiving waters and leads to non-point pollution in urbanized areas, appropriate management and treatment of the polluted urban stormwater is highly needed. However, current available best management practices (BMPs) are, to different degrees, restricted by their respective limitations. Therefore, there is an urgent demand in development of innovative, effective, and low-cost treatment methods for heavy metals …
Exploration Of The Current State And Directions Of Dynamic Ridesharing, Joseph J. Di Gianni
Exploration Of The Current State And Directions Of Dynamic Ridesharing, Joseph J. Di Gianni
Theses, Dissertations and Culminating Projects
Dynamic ridesharing (DRS) is an emerging transportation service based on the traditional concept of shared rides. DRS makes use of web-based real-time technologies to match drivers with riders. Enabling technologies include software platforms that operate on mobile communication devices and contain location-aware capabilities including Global Positioning Systems (Agatz, Erera, Savelsberg, & Wang, 2012). The platforms are designed to provide ride-matching services via smartphone applications differing from early systems that used non-real time services such as internet forums, or telecommunications, where responses were not immediate.
The study of DRS is important when considering its role as an emerging transportation demand management …
Penalized Function-On-Function Regression, Andrada Ivanescu, Ana Maria Staicu, Fabian Scheipl, Sonja Greven
Penalized Function-On-Function Regression, Andrada Ivanescu, Ana Maria Staicu, Fabian Scheipl, Sonja Greven
Department of Applied Mathematics and Statistics Faculty Scholarship and Creative Works
A general framework for smooth regression of a functional response on one or multiple functional predictors is proposed. Using the mixed model representation of penalized regression expands the scope of function-on-function regression to many realistic scenarios. In particular, the approach can accommodate a densely or sparsely sampled functional response as well as multiple functional predictors that are observed on the same or different domains than the functional response, on a dense or sparse grid, and with or without noise. It also allows for seamless integration of continuous or categorical covariates and provides approximate confidence intervals as a by-product of the …
Threshold Behavior Of A Marine‐Based Sector Of The East Antarctic Ice Sheet In Response To Early Pliocene Ocean Warming, Melissa A. Hansen, Sandra Passchier, Boo‐Keun Khim, Buhan Song, Trevor Williams
Threshold Behavior Of A Marine‐Based Sector Of The East Antarctic Ice Sheet In Response To Early Pliocene Ocean Warming, Melissa A. Hansen, Sandra Passchier, Boo‐Keun Khim, Buhan Song, Trevor Williams
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
We investigate the stability of the East Antarctic Ice Sheet (EAIS) on the Wilkes Land continental margin, Antarctica, utilizing a high‐resolution record of ice‐rafted debris (IRD) mass accumulation rates (MAR) from Integrated Ocean Drilling Program Site U1359. The relationship between orbital variations in the IRD record and climate drivers was evaluated to capture changes in the dynamics of a marine‐based ice sheet in response to early Pliocene warming. Three IRD MAR excursions were observed and confirmed via scanning electron microscope microtextural analysis of sand grains. Time series analysis of the IRD MAR reveals obliquity‐paced expansions of the ice sheet to …
A Socio-Demographic Analysis Of Responses To Terrorism, Gabriel Rubin, Christopher Salvatore
A Socio-Demographic Analysis Of Responses To Terrorism, Gabriel Rubin, Christopher Salvatore
Department of Justice Studies Faculty Scholarship and Creative Works
Extensive research has found that there are differences in reported levels of fear of crime and associated protective actions influenced by socio-demographic characteristics such as race and gender. Further studies, the majority of which focused on violent and property crime, have found that specific demographic characteristics influence fear of crime and protective behaviors. However, little research has focused on the influence of socio-demographic characteristics on perceptions, and protective actions in response to the threat of terrorism. Using data from the General Social Survey, this study compared individual-level protective actions and perceptions of the effectiveness of protective responses to the 9/11 …
Nonlinear Gravitational-Wave Memory From Merging Binary Black Holes, Goran Dojcinoski
Nonlinear Gravitational-Wave Memory From Merging Binary Black Holes, Goran Dojcinoski
Theses, Dissertations and Culminating Projects
Gravitational waves are oscillations in spacetime that propagate throughout the universe at the speed of light. They are a prediction of Einstein’s theory of General Relativity. Detectable sources of gravitational waves are typically collisions of black holes or other compact objects (neutron stars, white dwarfs). While most gravitational-wave signals are expected to be oscillatory in nature, some will exhibit a phenomenon called gravitational-wave memory. This refers to a non-oscillatory component of the gravitational wave signal that can leave a permanent distortion (or “memory” ) in a gravitational-wave detector. The nonlinear memory effect is a type of memory signal that arises …
Interlace Polynomial Of A Special Eulerian Graph, Christian A. Hyra
Interlace Polynomial Of A Special Eulerian Graph, Christian A. Hyra
Theses, Dissertations and Culminating Projects
In a recent paper, Arratia, Bollobas and Sorkin discussed a graph polynomial defined recursively, which they call the interlace polynomial. There have been previous results on the interlace polynomials for special graphs, such as paths, cycles, and trees. Applications have been found in biology and other areas. In this research, I focus on the interlace polynomial of a special type of Eulerian graph, built from one cycle of size n and n cycle three graphs. I developed explicit formulas by implementing the toggling process to the graph. I further investigate the coefficients and special values of the interlace polynomial. Some …
Novel Fluorescent Sensors For Cations With Additional Pet Pathways To Suppress Signals From Protons, Lesly C. Gomez
Novel Fluorescent Sensors For Cations With Additional Pet Pathways To Suppress Signals From Protons, Lesly C. Gomez
Theses, Dissertations and Culminating Projects
A large number of fluorescent sensors for cations that use a photoinduced electron transfer (PET) process to signal cation binding have been developed over the past three decades.1 The PET process of some of these sensors depends on having a tertiary nitrogen atom as a part of the receptor for cations. While these sensors work well as cation sensors, they also generate a fluorescent signal due to protonation of these receptors. The goal of this project is to design a fluorescent sensor that uses the same cation receptors but would not generate a signal for protons. Our new sensor has …
On The 3-Dimensional Fluid-Structure Interaction Of Flexible Fibers In A Flow, Ryan Howard Allaire
On The 3-Dimensional Fluid-Structure Interaction Of Flexible Fibers In A Flow, Ryan Howard Allaire
Theses, Dissertations and Culminating Projects
We discuss the equilibrium configurations of a flexible fiber clamped to a spherical body and immersed in a flow of fluid moving with a speed ranging between 0 and 50 cm/s. Experimental results are presented with both two-dimensional and three-dimensional numerical simulations used to model this problem. We present the effects of flow speed and initial configuration angle between the fiber and the direction of the flow. Investigations reveal that both the orientation of the fiber and the fiber length have a significant impact on the deformation of the fiber as well as on the forces it experiences. Specifically, we …
Numerical Study Of Body Shape And Wing Flexibility In Fluid Structure Interaction, Peter Nolan
Numerical Study Of Body Shape And Wing Flexibility In Fluid Structure Interaction, Peter Nolan
Theses, Dissertations and Culminating Projects
We discuss the equilibrium configurations of fibers clamped to an ellipsoidal body and immersed in a flow ranging between 0-50 cm/s. Experimental and numerical results are presented and the effects of flow speed, body shape, and orientation of the fibers upon the equilibrium configuration are investigated. Our investigations reveal that the orientation of the fibers, the length of the length fibers, as well as, the shape of the body has a significant impact upon the bending and drag experienced by the ellipsoid-fiber system. We note that (i) less eccentric bodies experience greater drag forces and increased bending of the attached …
Characterization Of Uv-Quenching Dissolved Organic Matter In Landfill Leachate, Alicja Trzopek
Characterization Of Uv-Quenching Dissolved Organic Matter In Landfill Leachate, Alicja Trzopek
Theses, Dissertations and Culminating Projects
Discharge of landfill leachate to publicly owned treatment works (POTWs) is a common and preferred practice in the United States. Namely, the leachate is mixed with municipal wastewater prior to traditional secondary wastewater treatment, including physical screening, primary settling, aerobic biological degradation, secondary settling and disinfection. Recently, ultraviolet (UV) light has been increasingly applied as a disinfection method at POTWs as an alternative for traditional chlorination, because the latter can produce unwanted disinfection byproducts. However, high strength dissolved organic matter (DOM) in leachate significantly increase the UV absorbing properties of the mixed wastewater at POTWs and decrease the disinfection efficiency …
An Assessment Of New Jersey Trout Production Systems : A Movement Towards Sustainability, Luke J. Diglio
An Assessment Of New Jersey Trout Production Systems : A Movement Towards Sustainability, Luke J. Diglio
Theses, Dissertations and Culminating Projects
New Jersey supports reproducing populations of three lotic salmonids. Only Brook Trout (Salvelinus fontinalis) are native and until approximately 100 years ago, were found in abundance throughout the northern part of the state. Presently, native populations have been documented in 115 streams or stream sections and declines are thought to be in response to anthropogenically originated environmental stressors. To evaluate the deterioration extent and assess numbers of breeding non-native Brown Trout (Salmo trutta) and Rainbow Trout (Oncorhynchus mykiss), comparisons are made between sets of historical (1968-1977) and modern (2001-2010) young-of-the-year presence/absence and abundance data …
An Integrated Approach To Assessing Spread Of Commercial Horticulture And Related Environmental Impacts On Watersheds : Cases In Central Highlands Of Kenya, Faith Karegi Muriithi
An Integrated Approach To Assessing Spread Of Commercial Horticulture And Related Environmental Impacts On Watersheds : Cases In Central Highlands Of Kenya, Faith Karegi Muriithi
Theses, Dissertations and Culminating Projects
Intensive horticulture production has broad environmental implications due to the high dependency on natural resources. Numerous reports indicate positive socio-economic gains associated with the Kenyan horticulture sub-sector. Even so, few highlight the extent of the negative environmental impacts. We adopt a holistic approach that integrates deskwork, Geographical Information Systems (GIS), field study and remote sensing tools to evaluate the spread and growth of commercial horticulture, and the effects on: i) surface water quality, and ii) vegetation condition, in watersheds experiencing increased production within the central highlands. The desk research utilized Google Earth archives and GIS data, to map greenhouse distribution, …
Assessing And Mapping Vulnerability And Risk Perceptions To Groundwater Arsenic Contamination : Towards Developing Sustainable Arsenic Mitigation Models, Sushant Kumar Singh
Assessing And Mapping Vulnerability And Risk Perceptions To Groundwater Arsenic Contamination : Towards Developing Sustainable Arsenic Mitigation Models, Sushant Kumar Singh
Theses, Dissertations and Culminating Projects
This study focuses on the arsenic-affected rural communities in Bihar located within the mid-Gangetic Plain in India. A random stratified sampling method is applied to survey 340 households in three villages (Suarmarwa, Rampur Diara, and Bhawani Tola), through a structured questionnaire. A reliable arsenic field testing kit is used to analyze the drinking water sources in the field, followed by a confirmatory test of a subset of water samples through Atomic Absorption Spectrophotometry. The study has two major goals: 1) Develop sustainable arsenic-mitigation models; and 2) Create a “composite vulnerability index,” and present the information as a map for use …
Assessing The Flood Mitigation Potential Of Water Resource Reservoirs, Matthew M. Del Ciello
Assessing The Flood Mitigation Potential Of Water Resource Reservoirs, Matthew M. Del Ciello
Theses, Dissertations and Culminating Projects
The ability of drinking water reservoirs to retain a large amount of runoff during a storm event may allow them to be used as flood mitigation infrastructure. These types of reservoirs are not typically considered for flood mitigation because they are primarily thought of as a resource for drinking water, irrigation, or recreation. Flood mitigation is a secondary or tertiary use. But conscripting them for flood mitigation creates a flexible water resource system and may provide a simpler and more inexpensive solution to flooding than alternative methods since nothing new would need to be constructed.
The process of determining the …
Toward The Synthesis Of [4.2.1]Di-Azabicyclic Systems, Carlos Abel Gomez
Toward The Synthesis Of [4.2.1]Di-Azabicyclic Systems, Carlos Abel Gomez
Theses, Dissertations and Culminating Projects
Conformationally restricted bicyclic amines have been found to be very useful scaffolds in medicinal chemistry. Examples can be found in the chemical literature for the application of conformationally restricted diamines. These molecules can be used as enzyme inhibitors or GPCR ligands. Conformational restriction can improve affinity and selectivity toward receptors. The stereochemical diversity-oriented approach is a method that explores stereochemical effects in small molecule ligands for proteins. It is an effective strategy when the bioactive conformation of a ligand and the pharmacophore of the binding site are unknown. These concepts are applied in the design the target [4.2.1]di-azabicyclic compounds. The …
The Relationship Between Extracellular Enzyme Activities, Heavy Metals And Particle Size In Soil, Diane Frances Hagmann
The Relationship Between Extracellular Enzyme Activities, Heavy Metals And Particle Size In Soil, Diane Frances Hagmann
Theses, Dissertations and Culminating Projects
The overall goal of this research is to investigate the relationship between nutrient cycling and heavy metals in soil. Extracellular enzyme activities were measured as a representation of nutrient cycling in soils collected from a heavy-metal contaminated area where four study sites lie along a gradient of increasing metal load. The site, which was previously a rail yard, is located in Liberty State Park (LSP) in Jersey City, NJ that was closed to the public about 40 years ago and remains closed. My hypothesis is that heavy metal contamination impacts the microbial communities in the soil and therefore the extent …
Advanced Ligo, J. Aasi, B. P. Abbott, R. Abbott, T. Abbott, M. R. Abernathy, K. Ackley, C. Adams, T. Adams, Marc Favata, Rodica Martin
Advanced Ligo, J. Aasi, B. P. Abbott, R. Abbott, T. Abbott, M. R. Abernathy, K. Ackley, C. Adams, T. Adams, Marc Favata, Rodica Martin
Department of Physics and Astronomy Faculty Scholarship and Creative Works
The Advanced LIGO gravitational wave detectors are second-generation instruments designed and built for the two LIGO observatories in Hanford, WA and Livingston, LA, USA. The two instruments are identical in design, and are specialized versions of a Michelson interferometer with 4 km long arms. As in Initial LIGO, Fabry-Perot cavities are used in the arms to increase the interaction time with a gravitational wave, and power recycling is used to increase the effective laser power. Signal recycling has been added in Advanced LIGO to improve the frequency response. In the most sensitive frequency region around 100 Hz, the design strain …