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Articles 1 - 6 of 6
Full-Text Articles in Engineering
Disentangling Glial Diversity In Peripheral Nerves At Single Nuclei Resolution, Aldrin Kay Yuen Yim
Disentangling Glial Diversity In Peripheral Nerves At Single Nuclei Resolution, Aldrin Kay Yuen Yim
Arts & Sciences Electronic Theses and Dissertations
The ability to discern gene expression at single cell level is revolutionizing our understanding of both basic biology and human health. Peripheral nerves are essential communicators between the outside world and the CNS, as evidenced by the devastating effects of diseases that disrupt them, such as ALS, Charcot-Marie-Tooth Syndrome and diabetic neuropathy. Understanding peripheral nerve dysfunction at a mechanistic level is of considerable interest due to the increasing prevalence and associated patient care costs of these disorders. Although most research of the peripheral nerve has focused on glial-axonal interactions, the important contributions of other cell types besides Schwann cells, such …
Computational Design Of Two-Dimensional Transition Metal Dichalcogenide Alloys And Their Applications, John Douglas Cavin
Computational Design Of Two-Dimensional Transition Metal Dichalcogenide Alloys And Their Applications, John Douglas Cavin
Arts & Sciences Electronic Theses and Dissertations
The discovery of bronze as an alloy of copper and tin is arguably the earliest form of material design, dating back thousands of years. In contrast, two-dimensional materials are new to the 21st century. The research presented in this dissertation is at the intersection of alloying and two-dimensional materials. I specifically study a class of two-dimensional materials known as transition metal dichalcogenides (TMDCs). Because of the large number of transition metals, there are many combinations of TMDCs that can be alloyed, making experimental exploration of the phase space of possible alloys unwieldly. Instead, I have applied first-principles methods to study …
Metal Salt Hydrolysis For Electrochemically Active Conducting Polymer Nanocomposites, Hongmin Wang
Metal Salt Hydrolysis For Electrochemically Active Conducting Polymer Nanocomposites, Hongmin Wang
Arts & Sciences Electronic Theses and Dissertations
The diversity of nanostructures obtained from organic polymerization is limited when compared to the vast amount of inorganic nanostructures. This dissertation will focus on a synergistic mechanism between organic polymerization and in situ inorganic salt hydrolysis for developing electrochemically active organic-inorganic hybrid nanostructures. The degree of polymerization, crystallinity and doping level of the conjugated polymer backbone is controlled using oxidative radical vapor-phase polymerization resulting in organic semiconductors featuring high crystallinity and superior electrical conductivity. An aqueous metal salt solution of iron (III) chloride serves as an oxidant for initiating the polymerization and interestingly, this inorganic salt hydrolyzes in situ producing …
Surface Modification Of Ii-Vi Semiconducting Nanocrystals, Calynn Morrison
Surface Modification Of Ii-Vi Semiconducting Nanocrystals, Calynn Morrison
Arts & Sciences Electronic Theses and Dissertations
This dissertation presents the compositional analysis of semiconductor materials by inductively coupled plasma optical emission spectroscopy (ICP-OES), a novel low-temperature shell growth precursor and installation pathway, and L-type for Z-type ligand exchange experiments conducted with four metal dithiocarbamate ligands. The techniques employed in the compositional analysis of semiconductor materials by inductively coupled plasma optical emission spectroscopy (ICP-OES) have a profound influence on the accuracy and reproducibility of the results. In Chapter 3, we describe methods for sample preparation, calibration, standard selection, and data collection. Specific protocols are suggested for the analysis of II-VI compounds and nanocrystals containing the elements Zn, …
Relating Spontaneous Activity And Cognitive States Via Neurodynamic Modeling, Matthew Singh
Relating Spontaneous Activity And Cognitive States Via Neurodynamic Modeling, Matthew Singh
Arts & Sciences Electronic Theses and Dissertations
Stimulus-free brain dynamics form the basis of current knowledge concerning functional integration and segregation within the human brain. These relationships are typically described in terms of resting-state brain networks—regions which spontaneously coactivate. However, despite the interest in the anatomical mechanisms and biobehavioral correlates of stimulus-free brain dynamics, little is known regarding the relation between spontaneous brain dynamics and task-evoked activity. In particular, no computational framework has been previously proposed to unite spontaneous and task dynamics under a single, data-driven model. Model development in this domain will provide new insight regarding the mechanisms by which exogeneous stimuli and intrinsic neural circuitry …
Midfoot And Ankle Movement Dysfunction In People With Diabetes Mellitus And Peripheral Neuropathy, Hyo Jung Jeong
Midfoot And Ankle Movement Dysfunction In People With Diabetes Mellitus And Peripheral Neuropathy, Hyo Jung Jeong
Arts & Sciences Electronic Theses and Dissertations
People with diabetes mellitus and peripheral neuropathy (DMPN) have midfoot and ankle musculoskeletal problems, including limited joint mobility and weakness and atrophy of foot intrinsic and calf muscles. Impaired foot structures and function could lead to midfoot and ankle movement dysfunction, measured by a heel rise task. A repeated movement dysfunction during weightbearing tasks (e.g., heel rise, walking) could cause excessive stress on the plantar tissue, which is a leading cause of plantar ulceration in people with DMPN. Understanding heel rise performance and the underlying mechanisms could help prevent the sequence of events associated with plantar ulcer development in people …