解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
精神病学
公共、环境和职业卫生
放射学,核医学和医学成像
康复学
生殖生物学
呼吸系统
风湿病学
运动科学
外科学
毒理学
热带医学
泌尿学和肾脏学
病毒学
老年医学
健康政策和服务
心理学,临床
abstract::The Water Erosion Prediction Project (WEPP) model has been tested for its ability to predict soil erosion, runoff, and sediment delivery over a wide range of conditions and scales for both hillslopes and watersheds. Since its release in 1995, there has been considerable interest in adding a chemical transport element ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:
更新日期:2010-11-01 00:00:00
abstract::The objective of the Parafield Aquifer Storage Transfer and Recovery research project in South Australia is to determine whether stormwater from an urban catchment that is treated in a constructed wetland and stored in an initially brackish aquifer before recovery can meet potable water standards. The water produced b...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2010.0078
更新日期:2010-11-01 00:00:00
abstract::Quantum dots (QDs) of two different surface chemistries (carboxyl [COOH] and polyethylene glycol [PEG] modified) were utilized to determine the impact of surface functionality on QD mobility and distribution in Pseudomonas aeruginosa PAO1 biofilms. Confocal laser scanning microscopy was utilized to evaluate QD associa...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0455
更新日期:2010-11-01 00:00:00
abstract::With increasing concern over potential polltion from farm wastes, there is a need for rapid and robust methods that can analyze livestock manure nutrient content. The near infrared spectroscopy (NIRS) method was used to determine nutrient content in diverse poultry manure samples (n=91). Various standard preprocessing...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0449
更新日期:2010-09-01 00:00:00
abstract::Water flow and P dynamics in a low-relief landscape manipulated by extensive canal and ditch drainage systems were modeled utilizing an ontology-based simulation model. In the model, soil water flux and processes between three soil inorganic P pools (labile, active, and stable) and organic P are represented as databas...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0509
更新日期:2010-09-01 00:00:00
abstract::In many regions, conservation tillage has replaced conventional tilling practices to reduce soil erosion, improve water conservation, and increase soil organic matter. However, tillage can have marked effects on soil properties, specifically nutrient redistribution or stratification in the soil profile. The objective ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0491
更新日期:2010-09-01 00:00:00
abstract::Treatment of liquid swine manure (LSM) offers opportunities to improve manure nutrient management. However, N2O fluxes and cumulative emissions resulting from application of treated LSM are not well documented. Nitrous oxide emissions were monitored following band-incorporation of 100 kg N ha(-1) of either mineral fer...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0482
更新日期:2010-09-01 00:00:00
abstract::Land use and land cover (LULC) play a central role in fate and transport of water quality (WQ) parameters in watersheds. Developing relationships between LULC and WQ parameters is essential for evaluating the quality of water resources. In this paper, we present an artificial neural network (ANN)-based methodology to ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0441
更新日期:2010-07-01 00:00:00
abstract::The state of Iowa requires developing total maximum daily loads (TMDLs) for over 400 water bodies that are listed on the 303(d) list of the impaired waters. The Raccoon River watershed, which covers approximately 9400 km2 of prime agriculture land and represents a typical Midwestern corn-belt region in west-central Io...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0392
更新日期:2010-07-01 00:00:00
abstract::The influence of biochar on nitrogen (N) transformation processes in soil is not fully understood. This study assessed the influence of four biochars (wood and poultry manure biochars synthesized at 400 degrees C, nonactivated, and at 550 degrees C, activated, abbreviated as: W400, PM400, W550, PM550, respectively) on...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0138
更新日期:2010-07-01 00:00:00
abstract::Triclosan (TCS) and triclocarban (TCC), widely used as antibacterial agents, have been frequently detected in biosolids. Biosolids land application may introduce pharmaceuticals and personal care products (PPCPs) such as TCS and TCC into the environment. Microcosm studies were conducted to investigate TCS and TCC tran...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0055
更新日期:2010-07-01 00:00:00
abstract::Acidity of water from abandoned underground mines decreases over time, and the rate of decrease can help formulate remediation approaches and treatment system designs. The objective of this study was to determine an overall acidity decay rate for above-drainage underground mines in northern West Virginia from a large ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0229
更新日期:2010-04-13 00:00:00
abstract::Although the importance of vascular plant-derived dissolved organic carbon (DOC) in freshwater systems has been studied, the role of leached DOC as precursors of disinfection byproducts (DBPs) during drinking water treatment is not well known. Here we measured the propensity of leachates from four crops and four aquat...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0487
更新日期:2010-04-13 00:00:00
abstract::Growing nitrogen (N) catch crops can reduce NO(3)-N leaching after cultivating cereals. The objective of this study was to relate NO(3)-N leaching to variation in the uptake of N and the size and distribution of the root systems of different catch crops species. In a 3-yr lysimeter experiment, phacelia (Phacelia tanac...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0306
更新日期:2010-04-13 00:00:00
abstract::Malodors from pig manure storage pits are a problem lacking a cost-efficient solution particularly for small pig (Sus domestica) farms. The objective of this study was to reduce emissions of noxious odorants by changing the conditions in the pig manure to favor an altered microbial community. Sugars (maltose, lactose,...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0530
更新日期:2010-02-19 00:00:00
abstract::The accumulation of polycyclic aromatic hydrocarbons (PAH) in soil, plants, and water may impart negative effects on ecosystem and human health. We quantified the concentration and distribution of 41 PAH (n = 32), organic C, total N, and S (n = 140) and investigated PAH sources using a chronosequence of floodplain soi...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0270
更新日期:2010-02-19 00:00:00
abstract::Environmental regulations on greenhouse gas (GHG) emissions from corn (Zea mays L.)-ethanol production require accurate assessment methods to determine emissions savings from coproducts that are fed to livestock. We investigated current use of coproducts in livestock diets and estimated the magnitude and variability i...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0283
更新日期:2010-02-19 00:00:00
abstract::Surface seeps can be defined as locations where upwelling ground water saturates the surface for most of the year and excess ground water can be delivered to the stream channel via surface flowpaths. If a stream is predominantly fed by seeps, then ground water added to the stream via these surface flowpaths may result...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0083
更新日期:2009-12-30 00:00:00
abstract::Adding phytase and 25- hydroxycholecalciferol (25-OH D(3)) to broiler diets has been shown effective at reducing total P concentrations in broiler litter. This study was conducted to determine the impact of field application of broiler litter from modified diets on P solubility in litter-amended soils and P losses in ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0139
更新日期:2009-12-30 00:00:00
abstract::The interaction of sulfonamide antimicrobial agents with smectite clay minerals and humic acid (HA)-clay complexes was investigated in batch experiments to assess the influence of adsorbed humic acid on sulfonamide sorption. Soil HA-clay complexes were produced at HA:clay ratios of 1:5, 1:50, and 1:100 (w/w). Vibratio...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0274
更新日期:2009-12-30 00:00:00
abstract::Closed chambers used to measure soil-atmosphere exchange of trace gases including nitrous oxide (N(2)O) and carbon dioxide (CO(2)) generate errors due to suppression of the gas concentration gradient at the soil-atmosphere interface. A method is described here for estimating the magnitude of flux underestimation arisi...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0231
更新日期:2009-12-30 00:00:00
abstract::The southwest of Western Australia is affected by dryland salinity that results in the loss of previously productive agricultural land, damage to buildings, roads, and other infrastructure, decline in pockets of remnant vegetation and biodiversity, and reduction in water quality. Accurate information on the location a...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0036
更新日期:2009-12-30 00:00:00
abstract::Ammonia is an important air and water pollutant, but the spatial variation in its concentrations presents technical difficulties in accurate determination of ammonia emissions from animal feeding operations. The objectives of this study were to investigate the relationship between ammonia volatilization and delta15N o...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0057
更新日期:2009-10-29 00:00:00
abstract::Prudent interventions for reducing selenium (Se) in groundwater and streams within an irrigated river valley must be guided by a sound understanding of current field conditions. An emerging picture of the nature of Se contamination within the Lower Arkansas River Valley in Colorado is provided by data from a large num...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0499
更新日期:2009-10-29 00:00:00
abstract::Metal-thiol complexes can enhance metal uptake by plant roots and microorganisms, therefore it is important to determine whether thiols effectively solubilize these metals from the soil matrix. Extractions were conducted by combining 1 g contaminated soil and 10 mL of 10 mmol L(-1) thiol solution and shaking for 1 h. ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0524
更新日期:2009-10-29 00:00:00
abstract::Proper management of shallow coastal systems, which are vulnerable to nutrient enrichment, requires knowledge of land use impacts on nutrient discharges. This study quantified base flow nutrient concentrations and yields for 1 yr (May 2001-April 2002) from 14 first-order streams on the Virginia Eastern Shore (VaES) on...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0358
更新日期:2009-08-24 00:00:00
abstract::Quantifying and managing diffuse P losses from small catchments or at the farm scale requires detailed knowledge of farming practices and their interaction with catchment processes. However, detailed knowledge may not be available and hence modeling is required. This paper demonstrates two approaches to developing too...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2007.0651
更新日期:2009-08-24 00:00:00
abstract::Urban landscapes contain a mix of land-use types with different patterns of nitrogen (N) cycling and export. We measured nitrate (NO(3)(-)) leaching and soil:atmosphere nitrous oxide (N(2)O) flux in four urban grassland and eight forested long-term study plots in the Baltimore, Maryland metropolitan area. We evaluated...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0521
更新日期:2009-07-23 00:00:00
abstract::Nutrient management plans (NMPs) for application of wastewater from concentrated animal feeding operations are designed to meet crop water and nutrient requirements, but implicitly assume that pathogenic microorganisms in the wastewater will be retained and die-off in the root zone. A NMP was implemented on a field pl...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0428
更新日期:2009-06-23 00:00:00
abstract::Vegetated filter strips (VFS) have become an important component of water quality improvement by reducing sediment and nutrients transport to surface water. This management practice is also beneficial for controlling manure-borne pathogen transport to surface water. The objective of this work was to assess the VFS eff...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0328
更新日期:2009-06-23 00:00:00
abstract::Glyphosate (N-phosphonometylglycine) is widely used due to its broad spectrum of activity and nonselective mode of action. In Chile it is the most used herbicide, but its adsorption behavior in the abundant and widespread variable charge soils is not well understood. In this study, three volcanic ash-derived soils wer...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0146
更新日期:2009-05-20 00:00:00
abstract::This paper reviews trace metal dynamics in floodplain soils using the Elbe floodplains in Germany as an example of extraordinary importance because of the pollution level of its sediments and soils. Trace metal dynamics are determined by processes of retention and release, which are influenced by a number of soil prop...
journal_title:Journal of environmental quality
pub_type: 杂志文章,评审
doi:10.2134/jeq2008.0299
更新日期:2009-05-20 00:00:00
abstract::The nutrient content of sludge produced by municipal water treatment works often far exceeds the requirements of nearby crops. Transporting sludge further afield is not always economically viable. This study reports on the potential to export large volumes of anaerobically digested municipal sewage sludge through turf...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0397
更新日期:2009-04-27 00:00:00
abstract::Laboratory microcosm experiments were used to assess the effects of environmental parameters on the persistence of the Bacteroides 16S rRNA genes derived from equine fecal samples in stream water to investigate the utility of Bacteroides spp. as fecal indicator organisms. Quantitative real-time polymerase chain reacti...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0258
更新日期:2009-04-27 00:00:00
abstract::Soils in the Fuyang valley (Zhejiang province, southeast China) have been contaminated by heavy metals. Since rice (Oryza sativa L.) is the dominant crop in the valley and because of its tendency to accumulate Cd in its grains, assessment of the human health risk resulting from consumption of locally produced rice is ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0228
更新日期:2009-04-27 00:00:00
abstract::Excessive loading of sediment and nutrients to rivers is a major problem in many parts of the United States. In this study, we tested the non-parametric Seasonal Kendall (SEAKEN) trend model and the parametric USGS Quality of Water trend program (QWTREND) to quantify trends in water quality of the Minnesota River at F...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0250
更新日期:2009-03-25 00:00:00
abstract::Trace elements (TEs) are universally present in environmental media, including soil, but agriculture uses some materials that have increased TE concentrations. Some TEs (e.g., Cu, Se, and Zn) are added to animal feeds to ensure animal health. Similarly, TEs are present in micronutrient fertilizers. In the case of phos...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0195
更新日期:2009-03-25 00:00:00
abstract::Terbuthylazine (TA) is a herbicide that has been introduced for weed control in corn cultivations as a direct replacement for atrazine. Because incorporation of different organic amendments (OAs) is a common practice in this crop, this study investigated the effects of different OAs, including urban sewage sludge, pou...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0162
更新日期:2009-02-25 00:00:00
abstract::A field study was initiated to determine survival, growth characteristics, and metal uptake of two montane riparian willow species, Geyer (Salix geyeriana Andersson) and mountain (S. monticola Bebb) willow, grown in amended fluvial mine tailing deposits. Revegetation was done with staked and previously rooted cuttings...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0153
更新日期:2009-02-25 00:00:00
abstract::To control ammonia (NH(3)) volatilization from the dairy cattle (Bos taurus) manure composting process, a compost pile was covered with mature compost and the gas emissions evaluated using the dynamic chamber system. The peak of NH(3) volatilization observed immediately after piling up of the compost was reduced from ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2008.0083
更新日期:2009-02-06 00:00:00