A5080742157- Atmospheric chemistry and aerosols
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Vehicle emissions and performance
- Air Quality Monitoring and Forecasting
- Synthesis and characterization of novel inorganic/organometallic compounds
- Groundwater and Isotope Geochemistry
- Organometallic Complex Synthesis and Catalysis
- Atmospheric Ozone and Climate
- Catalytic Processes in Materials Science
- Vehicular Ad Hoc Networks (VANETs)
- Enzyme Structure and Function
- Synthetic Organic Chemistry Methods
- Cyclopropane Reaction Mechanisms
- Water Quality and Pollution Assessment
- Water Quality and Resources Studies
- Marine and coastal ecosystems
- Mercury impact and mitigation studies
- Soil and Water Nutrient Dynamics
- IoT and Edge/Fog Computing
- Asymmetric Synthesis and Catalysis
- Coordination Chemistry and Organometallics
Deutsche Telekom (Germany)
2020-2024
TU Dresden
2016-2022
University of Illinois Urbana-Champaign
2004-2020
National Atmospheric Deposition Program
2005-2020
Illinois Archaeological Survey
2007-2020
University Hospital Carl Gustav Carus
2017
Champaign Public Library
2014
Environment Agency
2012
American College of Chest Physicians
2012
Biotechnology Institute
2004
OBJECTIVES: This revised clinical practice guideline, intended for use by primary care clinicians, provides recommendations the diagnosis and management of obstructive sleep apnea syndrome (OSAS) in children adolescents. guideline focuses on uncomplicated childhood OSAS, that is, OSAS associated with adenotonsillar hypertrophy and/or obesity an otherwise healthy child who is being treated setting. METHODS: Of 3166 articles from 1999–2010, 350 provided relevant data. Most were level II–IV....
Rapid development of agriculture and fossil fuel combustion greatly increased US reactive nitrogen emissions to the atmosphere in second half 20th century, resulting excess deposition natural ecosystems. Recent efforts lower oxides have substantially decreased nitrate wet deposition. Levels ammonium deposition, by contrast, many regions. Together these changes altered balance between oxidized reduced Across most United States, has transitioned from being nitrate-dominated 1980s...
Abstract The profound changes in global SO 2 emissions over the last decades have affected atmospheric composition on a regional and scale with large impact air quality, deposition radiative forcing of sulfate aerosols. Reproduction historical pollution levels based aerosol models emission is crucial to prove that such are able predict future scenarios. Here, we analyze consistency trends observations sulfur components precipitation from major networks estimates six different 1990 until...
The need for ambient gaseous ammonia (NH3) measurements has increased in the last decade as reactive NH3 concentrations and deposition fluxes show little change even with tightening standards on nitrogen oxides (NOx) emissions. Currently, there are several networks developing methods adding U.S. Gaseous will provide scientists policymakers data which can be used to estimate ecosystem inputs, validate air quality models including trends regional variability, evaluate changes environment based...
Data from bi-weekly passive samplers 18 of the longest operating National Atmospheric Deposition Program's (NADP) Ammonia Monitoring Network (AMoN) sites (most 2008 to 2015) show that concentrations NH3 have been increasing (p-value < 0.0001) over large regions USA. This trend is occurring at a seasonal and annual level aggregation. Using random coefficient models (RCM), mean slope for combined shows an increase concentration +7% per year, with 95% confidence interval (C.I.) +5% +9% year....
Measuring wet deposition of organic carbon (OC) and black (BC) is crucial for the complete understanding global circulation, lifetime, radiative forcing these aerosols. There currently no accepted standard analytical method measuring OC BC concentration in precipitation. Different methods have been employed this purpose, but their feasibility has yet to be assessed. This manuscript evaluates use thermal-optical analysis (TOA), single-particle soot photometry (SP2), ultraviolet–visible...
Mercury (Hg) is a toxic metal that found in aquatic food webs and hazardous to human wildlife health. We examined the relationship between Hg deposition, land coverage by coniferous deciduous forests, average concentrations largemouth bass (Micropterus salmoides)-equivalent fish (LMBE) 14 ecoregions located within all or part of six states South Central U.S. In 11 ecoregions, 35.6-cm total length LMBE were above 300 ng/g, threshold concentration recommended Environmental Protection Agency...
There is a potential for using waste tire rubber to make activated-carbon adsorbents air-quality control applications. Such an approach provides recycling path tires and the production of new from low-cost material. Tire-derived activated carbons (TDACs) were prepared tires. The resulting products are generally mesoporous, with N2−BET specific surface areas ranging 239 1031 m2/g. TDACs tested their ability store natural gas remove organic compounds mercury species streams. able achieve 36%...
This paper is advocating for joint design of communication and control in cyber physical systems, especially self driving automobiles, exploiting adaptive next generation networking concepts such as mobile edge clouds 5G commu- nication systems. In this paper, we present our '5G connected- cars' testbed that was demonstrated multiple international events including the Mobile World Congress, Barcelona 2016. It constitutes a complete network architecture cloud software services facilitates...
Atmospheric concentrations of ammonia (NH3) are not well characterized in the United States due to sparse number monitors, relatively short lifetime NH3 atmosphere, and difficulty measuring non-point source emissions such as fertilized agricultural land. In this study, we compare measured weekly collected by two denuder systems with a bi-weekly passive sampler used National Deposition Program's (NADP) Ammonia Monitoring Network (AMoN). The purpose study was verify samplers AMoN characterize...
Activated carbons for natural gas storage were produced from Illinois bituminous coals (IBC-102 and IBC-106) scrap tires by physical activation with steam or CO2 chemical KOH, H3PO4, ZnCl2. The products characterized N2-BET area, micropore volume, bulk density, pore size distribution, volumetric methane capacity (Vm/Vs). Vm/Vs values coal-derived ranged 54 to 83 cm3/cm3, which are 35−55% of a target value 150 cm3/cm3. Both granular pelletized made preoxidized coal gave higher volumes larger...
Using the infrastructure of National Atmospheric Deposition Program (NADP), numerous measurements radionuclide wet deposition over North America were made for 167 NADP sites before and after Fukushima Dai-ichi Nuclear Power Station incident March 12, 2011. For period from 8 through April 5, 2011, wet-only precipitation samples collected by analyzed fission-product isotopes within whole-water filterable solid United States Geological Survey using gamma spectrometry.Variable amounts 131I,...
The five-coordinate compound [OsHCl(CO)(PiPr3)2] (1) reacts with diazoalkanes RCHN2 (R = H, Ph, CO2Et, SiMe3) at room temperature to give instead of the expected insertion product [Os(CH2R)Cl(CO)(PiPr3)2] isomeric osmium(II) hydrido−carbene complexes [OsHCl(CHR)(CO)(PiPr3)2] (2−5) containing hydrido and carbene ligands in trans disposition. Treatment 3 Ph) HCl toluene affords dichloro complex [OsCl2(CHPh)(CO)(PiPr3)2] (6), molecular structure which has been determined.
Abstract Ammonia (NH 3 ) emissions from fertilizer application is a highly uncertain input to chemical transport models (CTMs). Reducing such uncertainty important for improving predictions of ambient NH and PM 2.5 concentrations, regulatory policy purposes exploring linkages air pollution human health ecosystem services. Here, we implement spatially temporally resolved inventory fertilizers, based on high-resolution crop maps, nitrogen demand process model, as the Comprehensive Air Quality...
The reduction of [L2TiCl2] (1) (L = 3,5-tert-butylpyrazolate) with 1% Na/Hg in tetrahydrofuran (THF) affords the complex [L2TiCl(THF)2] (2), which crystallizes from hexane moderate yield. analogous carried out toluene gives dimeric [(L2TiCl)2] (3) high If time is extended to 3 days, [L3Ti] (4) isolated as light blue crystals low An alternative procedure for preparing compound 4 requires mixing [TiCl3(THF)3] equivalents potassium 3,5-tert-butylpyrazolate toluene. Crystallization...