Alison S. Greenlee

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In poorly constrained extra-vascular environments such as hollow viscera, current catheter navigation techniques are restricted to simple paths and therefore limit a doctor's ability to position the catheter. This paper presents a new catheter positioning system that enables faster and more accurate catheter placement, with fewer scans. The proposed robotic(More)
Experiments were designed to identify and isolate goat monocytes and lymphocytes. Leukocytes were obtained from peripheral blood, thymus, spleen, and lymph nodes. Thymocytes lacked surface immunoglobulin (Ig) detectable by immunohistochemical techniques and receptors for complement or Ig. A majority of the thymocytes nd nylon-wool purified blood T(More)
Various cell populations of equine mononuclear leukocytes were identified and isolated. Mononuclear leukocytes were concentrated by isopyknic centrifugation, using a solution of Ficoll and Hypaque. Three additional techniques were explored to separate monocytes from lymphocytes, and 3 methods were used to separate lymphocyte types. Cytochemical techniques(More)
Caprine arthritis-encephalitis is a retrovirus-induced disease resulting in lymphoproliferative lesions of the CNS and joints. Peripheral blood leukocytes of chronically infected goats were analyzed for the types of cells present and for their reactivity to viral antigen and polyclonal stimulants. Two of 9 infected goats had abnormal numbers of B(More)
Equine infectious anemia is a chronic disease of horses caused by a nononcogenic retrovirus. Studies were undertaken to determine the types of cells involved in the in vitro lymphoproliferative response to viral antigens and the dynamics of this reaction. It was observed that reactive lymphocytes were present at unpredictable times in the peripheral blood(More)
Caprine B lymphocytes were established as the cell type that divided when cultured with lipopolysaccharide (LPS), and lipid A was defined as the in vitro mitogenic component of LPS. The conclusion that the caprine B lymphocyte was stimulated by LPS was based on 3 observations: (i) Numbers of B lymphocytes increased in cultures containing LPS, but not in(More)
The cylindrical filters presently used in drip irrigation systems frequently clog, increasing pressure loss and lowering the flow rate through the filters. This work investigates alternative filtration strategies that increase the reliability of, and are compatible with, existing systems. To test different filtration strategies, a drip irrigation test setup(More)
In poorly constrained extra-vascular environments such as hollow viscera, current catheter navigation techniques are restricted to simple paths and therefore limit a doctor’s ability to position the catheter. This paper presents a new catheter positioning system that enables faster and more accurate catheter placement, with fewer scans. The proposed robotic(More)
Wave-driven reverse osmosis desalination systems can be a cost-effective option for providing a safe and reliable source of drinking water for large coastal communities. Such systems usually require the stabilization of pulsating pressures for desalination purposes. The key challenge is to convert a fluctuating pressure flow into a constant pressure flow.(More)
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