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::Micro-X-ray fluorescence (micro-XRF) microprobe analysis and micro-X-ray absorption near-edge structure (micro-XANES) spectroscopy were employed to identify Fe and Mn phases and their association with selected metals in two biosolids (limed composted [LC] and Nu-Earth) before and after treatment to remove organic carb...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0259
更新日期:2006-01-05 00:00:00
abstract::Forage-based livestock systems have been implicated as major contributors to deteriorating water quality, particularly for phosphorus (P) from commercial fertilizers and manures affecting surface and ground water quality. Little information exists regarding possible magnitudes of nutrient losses from pastures that are...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0246
更新日期:2006-01-05 00:00:00
abstract::There is a need for treatment technologies that can eliminate environmental problems associated with anaerobic lagoons. These technologies must be able to capture nutrients, kill pathogens, and reduce emissions of ammonia and nuisance odors. To meet these needs, a full-scale wastewater treatment plant was installed as...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0035
更新日期:2006-01-03 00:00:00
abstract::Understanding temporal and spatial distributions of naturally occurring total organic carbon (TOC) in sediments is critical because TOC is an important feature of surface water quality. This study investigated temporal and spatial distributions of sediment TOC and its relationships to sediment contaminants in the Ceda...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0221
更新日期:2006-01-03 00:00:00
abstract::Contamination of unfenced streams with P, sediments, and pathogenic bacteria from cattle (Bos taurus) activity may be affected by the availability of shade and alternative water sources. The objectives of this study were to evaluate water quality in two streams draining tall fescue (Festuca arundinacea Schreb.)-common...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0335
更新日期:2005-11-07 00:00:00
abstract::DIMBOA (3,4-dihydro-2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3-one), a major benzoxazinone of Poaceae plants, was isolated and purified from corn seedlings. The effect of isolated and purified DIMBOA on the degradation of atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine], and its toxic breakdown produc...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0409
更新日期:2005-11-07 00:00:00
abstract::Research has shown that alum [Al(2)(SO(4))(3).14H(2)O] applications to poultry litter can greatly reduce phosphorus (P) runoff, as well as decrease ammonia (NH(3)) volatilization. However, the long-term effects of fertilizing with alum-treated litter are unknown. The objectives of this study were to evaluate the long-...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0472
更新日期:2005-11-07 00:00:00
abstract::Pre-emergence herbicide residues were detected in domestic wells sampled near Tracy, CA. This study sought to determine the source of contamination by comparing soil distribution of diuron [N'-(3,4-dichlorophenyl)-N,N-dimethylurea] and hexazinone [3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0253
更新日期:2005-10-12 00:00:00
abstract::Incorporation of manure into cultivated soils is generally recommended to minimize nutrient losses. A 3-yr study was conducted to evaluate sediment and nutrient losses with different tillage methods (moldboard plow, heavy-duty cultivator, double disk, and no-incorporation) for incorporation of beef cattle manure in a ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0056
更新日期:2005-09-08 00:00:00
abstract::We have examined the persistence and movement of a urea-type herbicide, isoproturon [IPU; 3-(4-isopropylphenyl)-1,1'-dimethylurea], in soil using a novel herbicide-detection device, the prototype of a portable electrochemical biosensor based on Photosystem II particles immobilized on printed electrodes, and evaluated ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0351
更新日期:2005-09-08 00:00:00
abstract::A field study was initiated in 1992 to investigate the long-term impacts of beef feedlot manure application (composted and uncomposted) on nutrient accumulation and movement in soil, corn silage yield, and nutrient uptake. Two application strategies were compared: providing the annual crop nitrogen (N) requirement (N-...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0363
更新日期:2005-08-09 00:00:00
abstract::Diazinon [O,O-diethyl O-2-isopropyl-6-methyl(pyrimidine-4-yl) phosphorothioate] and imidacloprid [1-(1-[6-chloro-3-pyridinyl]methyl)-N-nitro-2-imidazolidinimine] are applied to lawns for insect control simultaneously with nitrogenous fertilizers such as urea, but their potential effect on urease activity and nitrogen ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0433
更新日期:2005-08-09 00:00:00
abstract::For (134/137)Cs, and many other soil contaminants, research into transfer to plants has focused on particular crops and phytoremediation candidates, producing uptake data for a small proportion of all plant taxa. Despite the significance of differences in uptake between plant taxa, the capacity of soil-to-plant transf...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0454
更新日期:2005-08-09 00:00:00
abstract::Potent estrogenic hormones are consistently detected in the environment at low concentration, yet these chemicals are strongly sorbed to soil and are labile. The objective of this research was to improve the understanding of the processes of sorption, mobility, and transformation for estrogens in natural soils, and th...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0290
更新日期:2005-07-05 00:00:00
abstract::Recent strategies to reduce elevated nitrate concentrations employ metallic Fe0 as a reductant. Secondary products of Fe0 corrosion include magnetite (Fe3O4), green rust [Fe6(OH)12SO4], and wüstite [FeO(s)]. To our knowledge, no studies have been reported on the reactivity of NO3- with FeO(s). This project was initiat...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0459
更新日期:2005-07-05 00:00:00
abstract::Pasture systems in Hawaii are based primarily on kikuyugrass (Pennisetum clandestinum Hochst. ex Chiov.). Relationships among kikuyugrass P concentration, animal P requirements, and various soil P determinations are needed to help identify source areas for implementing pasture management strategies to limit P loss via...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0393
更新日期:2005-06-07 00:00:00
abstract::Determination of sorption of hydrophilic, weakly sorbing organic compounds in soil by conventional batch methods using a slurried suspension is often prone to considerable errors because small changes in the solution concentration on equilibration must be accurately determined. This difficulty is exacerbated for compo...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2003.0423
更新日期:2005-05-11 00:00:00
abstract::Oily food waste (FOG; fat + oil + greases) containing high concentrations of fat, oil and grease is produced by the food service, production, and processing industries. It has a high C to N ratio (90:1) and can recycle soil available N through immobilization and remineralization during its decomposition. Experiments w...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0299
更新日期:2005-04-20 00:00:00
abstract::Mechanistic, predictive equations for phosphorus (P) transport in runoff from manure-applied fields constitute a critical knowledge gap for developing nonpoint-source pollution models. We derived two simple equations to describe the P release from animal manure during a rainfall event-one based on first-order P desorp...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2003.0097
更新日期:2005-04-20 00:00:00
abstract::Phosphogypsum (PG), a by-product of the phosphate fertilizer industry, reduces N losses when added to composting livestock manure, but its impact on greenhouse gas emissions is unclear. The objective of this research was to assess the effects of PG addition on greenhouse gas emissions during cattle feedlot manure comp...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0388
更新日期:2005-04-20 00:00:00
abstract::Beneficial and environmentally safe recycling of flue gas desulfurization (FGD) products requires detailed knowledge of their chemical and physical properties. We analyzed 59 dry FGD samples collected from 13 locations representing four major FGD scrubbing technologies. The chemistry of all samples was dominated by Ca...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0676
更新日期:2005-03-01 00:00:00
abstract::Phosphorus transport from agricultural soils contributes to eutrophication of fresh waters. Computer modeling can help identify agricultural areas with high potential P transport. Most models use a constant extraction coefficient (i.e., the slope of the linear regression between filterable reactive phosphorus [FRP] in...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0572
更新日期:2005-03-01 00:00:00
abstract::Arsenic is highly toxic and therefore represents a potential threat to the environment and human health. The mobility and bioavailability of arsenic in soil is mostly controlled by adsorption and desorption reactions. Even though adsorption and traditional batch desorption experiments provide information about the env...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:
更新日期:2005-03-01 00:00:00
abstract::Land application of biosolids is a beneficial-use practice whose ecological effects depend in part on hydrological effects. Biosolids were surface-applied to square 0.5-m2 plots at four rates (0, 7, 34, and 90 dry Mg ha(-1)) on each of three soil-cover combinations in Chihuahuan Desert grassland and shrubland. Infiltr...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
abstract::Gaseous emissions from animal manure storage facilities can contribute to global greenhouse gas inventories. Biogas fluxes were measured for one year from a 2-ha anaerobic lagoon that received waste from a 10500-head swine (Sus scrofa) finishing operation in southwestern Kansas. During 2001, ebullition of biogas was m...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
abstract::Biosolids, effluents, and manures are widely applied to agricultural land and other land with varying degrees of pretreatment or control. Regulations governing land application of biosolids take several broad forms in different countries, including limitations based on rates that do not lead to increases in background...
journal_title:Journal of environmental quality
pub_type: 杂志文章,评审
doi:10.2134/jeq2005.0114
更新日期:2005-01-01 00:00:00
abstract::Man has land-applied societal nonhazardous wastes for centuries as a means of disposal and to improve the soil via the recycling of nutrients and the addition of organic matter. Nonhazardous wastes include a vast array of materials, including manures, biosolids, composts, wastewater effluents, food-processing wastes, ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2005.0007
更新日期:2005-01-01 00:00:00
abstract::Riparian zones are recognized as landscape features that buffer streams from pollutants, particularly nitrogen. The objectives of this experiment were to (i) assess denitrification activity within a riparian zone and (ii) determine the influence of physical, chemical, and landscape features on denitrification. This ex...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.2367
更新日期:2004-11-01 00:00:00
abstract::Vertical distributions of (36)Cl and (99)Tc are presented from deep and shallow lysimeters above artificially controlled water tables for a 4-yr experiment from 1990 to 1993. Activity concentration profiles were all measured in late summer when a winter wheat (Triticum aestivum L. cv. Pastiche) crop was harvested. Aft...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.2272
更新日期:2004-11-01 00:00:00
abstract::Phosphorous (P) and nitrogen (N) in runoff from agricultural fields are key components of nonpoint-source pollution and can accelerate eutrophication of surface waters. A laboratory study was designed to evaluate effects of near-surface hydraulic gradients on P and N losses in surface runoff from soil pans at 5% slope...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.2174
更新日期:2004-11-01 00:00:00
abstract::From 1974 to 1984, 543 Mg ha(-1) of biosolids were applied to portions of a land-reclamation site in Fulton County, IL. Soil organic C increased to 5.1% then decreased significantly (p < 0.01) to 3.8% following cessation of biosolids applications (1985-1997). Metal concentrations in amended soils (1995-1997) were not ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.2078
更新日期:2004-11-01 00:00:00
abstract::On-site septic systems require appropriate soil characteristics to provide effective wastewater treatment. The objective of this study was to evaluate siting practices and treatment efficacy of on-site septic systems within the Cannonsville Reservoir watershed (115900 ha) in the state of New York. Using digital soil s...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1989
更新日期:2004-11-01 00:00:00
abstract::Seventeen different wastewater sludges were characterized using both chemical and organic matter fractionation methods (water extraction, Van Soest method, and acid hydrolysis) and 6-mo incubation studies to assess their decomposition in soil. Simple correlation and multiple factor analysis (MFA) were then performed t...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1885
更新日期:2004-09-01 00:00:00
abstract::Phosphorus dissolution often increases as soils become more reduced, but the mechanisms are not fully understood. The objectives of this research were to determine rates and mechanisms of P dissolution during microbial reduction of a surface soil from the North Carolina Coastal Plain. Duplicate suspensions of silt + c...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1793
更新日期:2004-09-01 00:00:00
abstract::The adsorption of chromate on mineral surfaces has received much attention due to its toxicity in natural systems. Spectroscopic studies have demonstrated that chromate forms inner-sphere complexes on variable-charge surfaces. However, in natural systems chromate has been observed to be fairly mobile, which has been e...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1703
更新日期:2004-09-01 00:00:00
abstract::Knowledge of the balance between nutrient inputs and removals is required for identifying regions that possess an excess or deficit of nutrients. This assessment describes the balance between the agricultural nutrient inputs and removals for nine geographical districts within Arkansas from 1997 to 2001. The total N, P...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1606
更新日期:2004-09-01 00:00:00
abstract::There is increasing concern about the environmental fate and impact of biosolids-associated anthropogenic organic chemicals, among which 4-nonylphenol (4-NP) is one of the most studied chemicals. This is primarily because 4-NP is an endocrine disruptor and has been frequently detected in environmental samples. Due to ...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1568
更新日期:2004-07-01 00:00:00
abstract::Leaching to ground water and tile drains are important parts of the environmental assessment of pesticides. The aims of the present study were to (i) assess the significance of preferential flow for pesticide leaching under realistic worst-case conditions for Dutch agriculture (soil profile with thick clay layer and h...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1473
更新日期:2004-07-01 00:00:00
abstract::Ultraviolet-B radiation is an environmental stress for plants and this situation could become aggravated in the next decades. In this study we used Italian ryegrass (Lolium multiflorum Lam.) as a model system to test whether an environmental stress derived from global change, such as UVB, can influence the efficacy of...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1376
更新日期:2004-07-01 00:00:00
abstract::The immobilization of Pb in contaminated soils as pyromorphite [Pb(5)(PO(4))(3)Cl, OH, F] through the addition of various phosphate amendments has gained much attention in the remediation community. However, it is difficult to fully determine the speciation and amount of soil Pb converted to pyromorphite by previously...
journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.1288
更新日期:2004-07-01 00:00:00