Lingjun Kong

Learn More
Effects of natural organic matter (NOM) on the photoreaction kinetics of fullerenes (i.e., C60 and fullerenol) were investigated using simulated sunlight and monochromatic radiation (365 nm). NOM from several sources quenched (slowed) the photoreaction of C60 aggregates in water (aqu/nC60), but sensitized (accelerated) photoreaction of fullerenol. Kinetic(More)
Reactive oxygen species (ROS) are one of the most important intermediates in chemical, photochemical, and biological processes. To understand the environmental exposure and toxicity of fullerenes better, the production and consumption of ROS (singlet oxygen, superoxide, hydrogen peroxide, and hydroxyl radicals) by Buckminster fullerene (C(60) ) and(More)
Document clustering is an important tool for text analysis and is used in many applications. This work develops a novel hierarchal algorithm for document clustering. We are particularly interested in studying and making use of cluster overlapping phenomenon to design cluster merging criteria. In our previous papers, the theoretical results on the overlap(More)
We provide the first evidence that a fullerene derivative can be extensively mineralized under environmental conditions by direct photolysis. Dissolved inorganic carbon (DIC) was identified as a major photoproduct of fullerenol, a hydroxylated C(60) molecule and the ratio of moles DIC produced to moles of fullerenol reacted reached 28 or approximately 47%(More)
To construct accurate risk assessment models for engineered nanomaterials, there is urgent need for information on the reactivity (or conversely, persistence) and transformation pathways of these materials in the natural environment. As an important step toward addressing this issue, we have characterized the products formed when aqueous C(60) clusters(More)
Approximately 108 million people in North America and Europe suffer from chronic pain. Virtual reality (VR) is a promising method for pain management in a clinical setting due to the distracting properties of an immersive virtual environment. In this study, we demonstrated the potential use of mobile phones as a means of delivering an easily accessible,(More)
Previous research suggests that the effectiveness of virtual reality exposure therapy should increase as the experience becomes more immersive. However, the neural mechanisms underlying the experience of immersion are not yet well understood. To address this question, neural activity during exposure to two virtual worlds was measured by functional magnetic(More)
Anodic Fenton treatment (AFT) has been shown to be a promising technology in pesticide wastewater treatment. However, no research has been conducted on the AFT application to contaminated soils. In this study, the 2,4-D degradation kinetics of AFT in a silt loam soil slurry were investigated for the first time, and the effects of various experimental(More)