Investigative Techniques Commons

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Recent Articles in Investigative Techniques

An Infrasonic Missing Fundamental Rises At 18.5hz, Christopher D. Lacomba, Steven A. Lloyd, Ryan A. Shanks University of North Georgia

An Infrasonic Missing Fundamental Rises At 18.5hz, Christopher D. Lacomba, Steven A. Lloyd, Ryan A. Shanks

Papers and Publications: Interdisciplinary Journal of Undergraduate Research

The Missing Fundamental (MF) phenomenon is an auditory processing artifact which arises from the perception of a harmonically-structured complex sound in the absence of the complex sound’s fundamental frequency (f0). Constructive interference occurring between constituent waveforms of the harmonic series may elicit a perceptible tone at the f0’s pitch. A related illusion, known as binaural auditory beats (BAB), may also generate nonexistent perceptible pitches through a shared mechanism. A harmonic series suggesting to an infrasonic f0 (1/f) noise and broken MF conditions. This data suggests that an infrasonic MF tone is generated, despite the ...


Kinematic And Spatiotemporal Analysis Between Sprint Drills And Maximal Sprinting, Julianne Cappadona Sacred Heart University

Kinematic And Spatiotemporal Analysis Between Sprint Drills And Maximal Sprinting, Julianne Cappadona

Undergraduate Honors Theses

Purpose: To determine if any kinematic differences exist between two common sprint drills (A- and B-drills) and maximal sprinting. Methods: 12 collegiate sprinters (19.17±1.11 y/o) granted informed consent were filmed performing two 40-meter sprints, A-skips, and B-skips. Three-dimensional motion analysis tracked the coordinates of 24 reflective markers and resulting joint kinematics were computed. Results: Statistical analysis revealed that sprinting yielded a significantly lower maximum hip flexion (p=0.015) but a significantly higher minimum ankle angular velocity (p=0.012) and step rate (p=0.000) value than A-drills. When compared to B-drills, sprinting values were ...


Grip And Pinch Strength Norms For Michigan Workers, Joel M. Phillips M.S., OTRL, Debra K. Lindstrom-Hazel Ph.D., OTRL, Samantha Harrow Swantek M.S., OTRL, Erin Courtnay Catalano M.S., OTRL Western Michigan University

Grip And Pinch Strength Norms For Michigan Workers, Joel M. Phillips M.S., Otrl, Debra K. Lindstrom-Hazel Ph.D., Otrl, Samantha Harrow Swantek M.S., Otrl, Erin Courtnay Catalano M.S., Otrl

The Open Journal of Occupational Therapy

The purpose of this study was to create a norm reference of current grip and pinch strength norms for working-age Michigan adults. This normative study included a convenience sample of 179 volunteers who were employees at car plants in South East Michigan or hospital sites in West Michigan. Participants’ ages ranged from between 20 and 62 years of age with a mean age of 49.15 years. There were 78 females (44%) and 101 males (56%). Subjects were classified by gender and in the age categories of ages 20 to 49 years and ages 50-62 years. Grip and pinch strength ...


Novel Imaging-Based Techniques Reveal A Role For Pd-1/Pd-L1 In Tumor Immune Surveillance In The Lung, Todd Bartkowiak Texas Medical Center Library

Novel Imaging-Based Techniques Reveal A Role For Pd-1/Pd-L1 In Tumor Immune Surveillance In The Lung, Todd Bartkowiak

UT GSBS Dissertations and Theses (Open Access)

The binding of immune inhibitory receptor Programmed Death 1 (PD-1) on T cells to its ligand PD-L1 has been implicated as a major contributor to tumor induced immune suppression. Clinical trials of PD-L1 blockade have proven effective in unleashing therapeutic anti-tumor immune responses in a subset of patients with advanced melanoma, yet current response rates are low for reasons that remain unclear. Hypothesizing that the PD-1/PD-L1 pathway regulates T cell surveillance within the tumor microenvironment, we employed intravital microscopy to investigate the in vivo impact of PD-L1 blocking antibody upon tumor-associated immune cell migration. However, current analytical methods of ...


Synthesis Of Near-Infrared Heptamethine Cyanine Dyes As Biological Imaging Agents, Jordan L. Malray Georgia State University

Synthesis Of Near-Infrared Heptamethine Cyanine Dyes As Biological Imaging Agents, Jordan L. Malray

Georgia State Undergraduate Research Conference

No abstract provided.


Evaluation Of Smoking Cessation Services In Ireland: Design And Pilot Of A Smoking Cessation Treatment Database, Sheila Keogan Dublin Institute of Technology

Evaluation Of Smoking Cessation Services In Ireland: Design And Pilot Of A Smoking Cessation Treatment Database, Sheila Keogan

Masters


A reduction in tobacco use is one of the stated aims of the National Health Promotion Strategy
(2000-2005) (Department of Health and Children, 2000a) as well being the core activity of
membership for all health promoting hospitals (HPH).
AIMS OF THE STUDY

1. To develop a database of smoking cessation services in Ireland.

2. Do a census of the smoking cessation services in Ireland and evaluate the range and
availability of them.
3. Develop a database for use in smoking cessation treatment services which would schedule
consultations with patients and gather all relevant demographics, treatments and their outcomes,
(cessation treatment ...


Investigating Axonal Biology Using Microfluidic Devices, James Deyling, Brittany Kastan Cleveland State University

Investigating Axonal Biology Using Microfluidic Devices, James Deyling, Brittany Kastan

Undergraduate Research Posters 2012

During nervous system development, various diffusing biomolecules play a critical role in neurite outgrowth and guidance, resulting in the formation of a complex circuitry. However, the precise mechanism by which these molecules are spatio-temporally delivered to the growing tip of the neurites is unclear. Overall, the results suggest to the utility of this device for studying neurobiology, tissue engineering and cell migration.


The Fractal Nature And Functional Connectivity Of Brain Function As Measured By Bold Mri In Alzheimer’S Disease, Mohammed A. Warsi McMaster University

The Fractal Nature And Functional Connectivity Of Brain Function As Measured By Bold Mri In Alzheimer’S Disease, Mohammed A. Warsi

Open Access Dissertations and Theses

Alzheimer’s disease (AD) is a degenerative disease with progressive deterioration of neural networks in the brain. Fractal dimension analysis (FD) of resting state blood oxygen level dependent (BOLD) signals acquired using functional magnetic resonance imaging (fMRI) allows us to quantify complex signalling in the brain and may offer a window into the network erosion. This novel approach can provide a sensitive tool to examine early stages of AD. As AD progresses, we expect to see a reduction in brain connectivity and signal complexity concurrent with biochemical changes (e.g. altered levels of N-acetyl aspartate (NAA), myoinositol (mI) and glutamate ...