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Articles 1 - 8 of 8
Full-Text Articles in Life Sciences
Integration Of Robotic Perception, Action, And Memory, Li Yang Ku
Integration Of Robotic Perception, Action, And Memory, Li Yang Ku
Doctoral Dissertations
In the book "On Intelligence", Hawkins states that intelligence should be measured by the capacity to memorize and predict patterns. I further suggest that the ability to predict action consequences based on perception and memory is essential for robots to demonstrate intelligent behaviors in unstructured environments. However, traditional approaches generally represent action and perception separately---as computer vision modules that recognize objects and as planners that execute actions based on labels and poses. I propose here a more integrated approach where action and perception are combined in a memory model, in which a sequence of actions can be planned based on …
Evaluating The Toxicity And Formation Of Halobenzoquinones In Point-Of-Use Chlorinated Drinking Water, Stephanie Hung
Evaluating The Toxicity And Formation Of Halobenzoquinones In Point-Of-Use Chlorinated Drinking Water, Stephanie Hung
Masters Theses
Chlorine has effectively reduced the prevalence of waterborne diseases, however there are secondary consequences to this public health advancement. Disinfection byproducts (DBPs) are chemicals formed when chlorine reacts with natural organic matter (NOM) in water. A new class of DBPs, halobenzoquinones (HBQs), has recently been identified and data suggests it could be potentially carcinogenic and up to 1000 times more toxic than some regulated DBPs. So far, in vitro studies have assessed HBQ toxicity without taking into account its transformation in cell media into potentially less toxic compounds. This study evaluated the toxic effects of one HBQ, 2,6-DCBQ, and its …
Application And Evaluation Of Lighthouse Technology For Precision Motion Capture, Soumitra Sitole
Application And Evaluation Of Lighthouse Technology For Precision Motion Capture, Soumitra Sitole
Masters Theses
This thesis presents the development towards a system that can capture and quantify motion for applications in biomechanical and medical fields demanding precision motion tracking using the lighthouse technology. Commercially known as SteamVR tracking, the lighthouse technology is a motion tracking system developed for virtual reality applications that makes use of patterned infrared light sources to highlight trackers (objects embedded with photodiodes) to obtain their pose or spatial position and orientation. Current motion capture systems such as the camera-based motion capture are expensive and not readily available outside of research labs. This thesis provides a case for low-cost motion capture …
New Approaches In Engineering Somatic Embryogenesis In Loblolly Pine Suspension Cultures, Elizabeth Morgan Cummings Bende
New Approaches In Engineering Somatic Embryogenesis In Loblolly Pine Suspension Cultures, Elizabeth Morgan Cummings Bende
Doctoral Dissertations
Many industries including agriculture and healthcare require efficient methods for replication of plants with optimal traits. The loblolly pine (Pinus taeda) is a valuable crop in the timber industry, occupying 30 million acres of U.S. land, and breeding efforts aim to produce a crop with ideal phenotypic traits, including superior growth and wood quality. One method to large-scale clonal crop propagation is somatic embryogenesis (SE), the process through which asexual (somatic) plant cells undergo differentiation in vitro, resulting in germination-competent embryos. There are three main stages of growth and development that lead to the production of embryos: …
Polymeric Peptide Mimics For Protein Delivery, Coralie Backlund
Polymeric Peptide Mimics For Protein Delivery, Coralie Backlund
Doctoral Dissertations
The plasma membrane is a major obstacle in the development and use of biomacromolecules for intracellular applications. Consequently, proteins with intracellular targets represent an enormous, yet under studied avenue for therapeutics. Extended research has aimed at facilitating intracellular delivery of exogenous proteins using protein transduction domains (PTDs), which allow transport of bioactive molecules into cells. Synthetic polymers, inspired by PTDs, provide a well-controlled platform to vary molecular architecture for structure activity relationship studies. Specifically, this thesis focuses on the use of ring-opening metathesis, a facile and efficient polymerization technique, through which we can vary structural parameters to optimize delivery of …
Microenvironment Regulates Fusion Of Breast Cancer Cells, Peiran Zhu
Microenvironment Regulates Fusion Of Breast Cancer Cells, Peiran Zhu
Masters Theses
Fusion of cancer cells has been observed in tumors for more than a century and is thought to contribute to tumor development and drug resistance. The low frequency of cell fusion events and the instability of fused cells have hindered our ability to understand the molecular mechanisms that govern cell fusion. We have developed a patterned gel system that can isolate cell fusion events and we demonstrate that several breast cancer cell lines can fuse into multinucleated giant cells in vitro, and the initiation and longevity of fused cells can be regulated solely by biophysical factors. Dynamically tuning the adhesive …
The Effects Of Mechanical Loading And Tumor Factors On Osteocyte Dendrite Formation, Wenbo Wang
The Effects Of Mechanical Loading And Tumor Factors On Osteocyte Dendrite Formation, Wenbo Wang
Masters Theses
Advanced breast cancer predominantly metastasizes to the skeleton, at which point patients suffer bone loss, pain, heightened fracture risk and their prognosis significantly declines. The skeleton is sensitive to its highly dynamic mechanical environment whereby bone mass is increased when applied loads are increased whereas bone loss occurs when applied loads are reduced. Increased mechanical loading inhibited bone metastatic tumor formation and progression in vivo, but the underlying mechanisms are currently under investigation. Here, we focus on the osteocyte, a specialized bone cell well-known as the primary mechanosensor and director of remodeling in the skeleton. Osteocytic dendrites are important for …
Structure-Property Relationships Of Polymer Films And Hydrogels To Control Bacterial Adhesion, Kristopher W. Kolewe
Structure-Property Relationships Of Polymer Films And Hydrogels To Control Bacterial Adhesion, Kristopher W. Kolewe
Doctoral Dissertations
The emergence and spread of antibiotic resistance across microbial species necessitates the need for alternative approaches to mitigate the risk of infection without relying on commercial antibiotics. Biofilm-related infections are a class of notoriously difficult to treat healthcare-associated infections that frequently develop on the surface of implanted medical devices. As biofilm formation is a surface-associated phenomenon, understanding how the intrinsic properties of materials affect bacterial adhesion enables the development of structure-property relationships that can guide the future design of infection-resistant materials. Despite lacking visual, auditory, and olfactory perception, bacteria still manage to sense and attach to surfaces. Previously, it has …