A5102768779- Soil Carbon and Nitrogen Dynamics
- Plant responses to elevated CO2
- Soil and Water Nutrient Dynamics
- Seedling growth and survival studies
- Plant nutrient uptake and metabolism
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Atmospheric chemistry and aerosols
- Ruminant Nutrition and Digestive Physiology
- Heavy metals in environment
- Plant Stress Responses and Tolerance
- Research on Leishmaniasis Studies
- Clay minerals and soil interactions
- Trypanosoma species research and implications
- Horticultural and Viticultural Research
- Forest Ecology and Biodiversity Studies
- Plant Micronutrient Interactions and Effects
- Peatlands and Wetlands Ecology
- Fire effects on ecosystems
- Food Safety and Hygiene
- Rangeland and Wildlife Management
- Congenital Heart Disease Studies
- Muscle metabolism and nutrition
- Aluminum toxicity and tolerance in plants and animals
- Innovation and Knowledge Management
Nationwide Children's Hospital
2021-2024
Sligo University Hospital
2024
The Ohio State University
2023-2024
Lawrence Livermore National Laboratory
2024
University of Guelph
1990-2021
Pediatrics and Genetics
2021
Sealed Air (United States)
2008-2017
University of Limerick
1996-2012
Virginia Tech
2009-2012
London School of Hygiene & Tropical Medicine
1992-2009
Journal Article A shuttle vector which facilitates the expression of transfected genes in Trypanosoma cruzi and Leishmania Get access John M. kelly, kelly Department Medical parasitology, London school Hygiene Tropical MedicineKeppel Street, WC1E 7HT, UK Search for other works by this author on: Oxford Academic PubMed Google Scholar Helena ward, ward Michael A. Miles, Miles Giles Kendall Nucleic Acids Research, Volume 20, Issue 15, 11 August 1992, Pages 3963–3969,...
The effects of acidic atmospheric inputs on forest nutrient status must be assessed within the context natural, internal acid production by carbonic and organic acids as well drains management practices such harvesting, fire, fertilization. In all cases anion associated with mobile in soil if leaching is to occur; immobilization anions can effectively prevent cation leaching. Soil acidification will occur only often substantial buffering capacity question exceeded weathering from primary...
Purpose Small to medium enterprises (SMEs) play an important role in the economy, terms of employment and their contribution national wealth. A significant proportion that comes from innovation. SMEs are also engine for future growth economy. Project management has a managing innovation growth. The purpose this paper is find extent which use projects, project tools management, determine what differences there by size company industry. Design/methodology/approach questionnaire was developed...
Abstract Purpose – The authors propose that small to medium‐sized enterprises (SMEs) need simpler, more people‐focused forms of project management than traditionally used by larger organizations. have undertaken this research identify what extent SMEs use and are the key components used. Design/methodology/approach Based on results two previous stages their formulate three propositions about in SMEs, which they test through a web‐based questionnaire. Findings More 40 per cent turnover...
Abstract One set of hypotheses offered to explain the decline red spruce ( Picea rubens Sarg.) in eastern North America focuses on effect acidic deposition soil chemistry changes that may affect nutrient availability and root function. Long‐term soils data suggest acidification has occurred some stands over past 50 yr, with plant uptake cation leaching both contributing loss cations. Studies tree ring also have indicated Ca/Al Mg/Al ratios wood, suggesting increases ionic strength solution....
Abstract The sandy soils of industrialized northwestern Indiana are contaminated with aerially deposited Cd, Zn, Cu, and Pb, which retained largely in the upper 5 cm soil. To evaluate leaching these metals, intact soil cores Oakville (Typic Udipsamment) series sampled from forested sites this area were leached laboratory acidified or metal‐containing solutions corresponding to 1 10 y simulated rainfall. Metals leachate below detection limits, analyses core sections showed that applied Pb...
Abstract Metal distribution in vegetation and soil components, annual inputs, losses were determined undisturbed urban rural ecosystems northwestern Indiana. The area has been exposed to contamination from industrial other sources for about 100 years. levels of cadmium, zinc, copper, lead (Cd, Zn, Cu, Pb) significantly higher the soils on site compared a similar system setting 67 km away. concentration top 2.5 cm averaged 10 ppm Cd, 2,456 463 Pb, 119 Cu. This was 20 times more concentrated...
Summary Biospheric ozone has become a widely distributed air pollutant, and growing body of research indicates that impacts forest health productivity. Ozone effects are mediated by the concentration present in external environment movement into leaf via stoma. The cumulative dose received plant is, simplest terms, function ambient stomatal conductance to water vapor. This relationship is important understanding flux subsequent response plants. Here, current progress uptake juvenile mature...
Abstract The effects of acid deposition, natural leaching, and harvesting on base cation export from forests in Maine, Tennessee, South Carolina, North Washington were compared. Based previous literature, we hypothesized that via whole‐tree (WTH) would be nearly independent soil exchangeable supplies; leaching strongly dependent the supplies as well input, production, mobility anions. This hypothesis was supported by data: mixed deciduous sites Tennessee had among highest (principally Ca)...
The trypanocidal activity of the ODC (ornithine decarboxylase) inhibitor DFMO (difluoromethylornithine) has validated polyamine biosynthesis as a target for chemotherapy. As is one only two drugs used to treat patients with late-stage African trypanosomiasis, requirement additional drug targets paramount. Here, we report biochemical properties TbSpSyn (Trypanosoma brucei spermidine synthase), enzyme immediately downstream in this pathway. Recombinant was purified and shown catalyse formation...
Abstract Urea and concentrated superphosphate were applied to plots in a deciduous forest examine their effects on decomposition of white oak leaves ( Quercus alba L.) litter bags the associated populations decomposer organisms. applications decreased soil invertebrate by about 30% caused three‐ four‐fold increase bacterial while increasing rates 1 3% at 550 1,100 kg/ha N levels, respectively. Superphosphate additions decrease highest addition rate 4 6% 275 P rates, Soil acidity changes...
Abstract White pine ( Pinus strobus L.), loblolly P. taeda yellow poplar Liriodendron tulipifera birch Betula alleghaniensis Britt.), and choke cherry Prunus virginiana L.) were grown from seeds in the greenhouse for 17 weeks. Plainfield fine sand, with pretreatment cadmium, lead, copper, zinc concentrations of 0.6, 11.4, 2.0, 20.6 ppm, respectively, was used as growth medium. This soil amended CdCl 2 to produce cadmium addition levels 0, 15, 100 ppm. Shoot elongation root shoot dry weights...
Data from three different grassland communities were analyzed to evaluate the effectiveness of methods estimating net production plant dominated by various mixtures grasses, forbs and shrubs. The were: (1) peak standing crop, (2) summation biomass for each species, (3) incremental increases. Each method was applied living biomass, dead litter. Comparison indicates that has its application, but in most cases positive increases gave maximum estimates community productivity.
Northern red oak (Quercus rubra L.) seedlings and trees differ in their response to ozone. Previous work reported reductions net photosynthesis, carboxylation efficiency quantum yield of mature tree leaves, whereas seedling processes were unaffected by the same ozone exposure. To further characterize differences between trees, we examined carbon partitioning allocation 32-year-old 4-year-old northern after exposure subambient (seasonal SUM00 dose (sum all hourly exposures) = 31 ppm-h),...