R. Liu

ORCID: 0000-0002-2394-1212
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About
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Research Areas
  • Soil Carbon and Nitrogen Dynamics
  • Advanced Database Systems and Queries
  • Isotope Analysis in Ecology
  • Geology and Paleoclimatology Research
  • Wastewater Treatment and Reuse
  • Phosphorus and nutrient management
  • Data Management and Algorithms
  • Forest Ecology and Biodiversity Studies
  • Soil and Water Nutrient Dynamics
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Data Mining Algorithms and Applications
  • Pesticide and Herbicide Environmental Studies
  • Mycorrhizal Fungi and Plant Interactions
  • Environmental Toxicology and Ecotoxicology

University of Minnesota
1997-2003

Due to the huge amounts of data being stored in traffic and transportation databases as well many other information repositories, visualization is receiving substantial interest from both academia industry. The Minneapolis-St. Paul (Twin-Cities) archival stores sensor network measurements collected freeway system Twin-Cities metropolitan area. In this paper, we present a web-based package for observing rapid summarization major trends. underlying database, modeled multi-dimensional warehouse...

10.1109/itsc.2002.1041299 article EN 2003-06-25

Abstract Small organic molecules, such as the commonly used herbicides napropamide [ N,N ‐diethyl‐2‐(1‐naphthyloxy) propionamide] and atrazine (2‐chloro‐4‐ethylamino‐6‐isopropylamino‐1,3,5‐triazine), complex with soluble humic acids (HAs), producing a marked effect on apparent solubility, availability, mobility. The overall objective of present paper is to propose procedure by which extent complexation small molecules stable can be quantitatively estimated. Experiments were carried out...

10.2134/jeq1997.00472425002600050012x article EN Journal of Environmental Quality 1997-09-01

10.1023/a:1009783825283 article EN Nutrient Cycling in Agroecosystems 1997-01-01
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