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Relevant bibliographies by topics / Heavy fraction organic matter

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Academic literature on the topic 'Heavy fraction organic matter'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Heavy fraction organic matter"

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MF, Qayyum, D. Steffens, Reisenauer HP, and S. Schubert. "Biochars influence differential distribution and chemical composition of soil organic matter." Plant, Soil and Environment 60, No. 8 (2014): 337–43. http://dx.doi.org/10.17221/768/2013-pse.

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In the present study, three soils (Ferralsol, Luvisol topsoil, and Luvisol subsoil) were amended with biochars (charcoal, hydrothermal carbonization coal (HTC) of bark, and low-temperature conversion coal of sewage sludge), wheat straw and a control (no amendment) and incubated over a period of 365 days. Each amendment was applied at a rate of 11.29 g C/kg soil. After incubation, the soils were analyzed to retrieve three density fractions (free fraction (FF), intra-aggregate fraction (IAF), and heavy fraction) which were analyzed for total carbon (TC) contents and scanned by fourier transform

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Das, Pallavi, Kali Prasad Sarma, and Manish Kumar. "Understanding of Chemical Speciation of Lead, Zinc and Copper in Vertical Profile of the Sediments of the Brahmaputra River, Assam, India." Asian Journal of Water, Environment and Pollution 12, no. 1 (2015): 21–28. http://dx.doi.org/10.3233/ajw-2015-12_1_04.

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Lead (Pb), zinc (Zn) and copper (Cu) are ubiquitous in the environment as a result of anthropogenic and geogenic processes. The fate of these metals in the environment is largely governed by their speciation, which is influenced by sediment properties. Therefore present study focusses on the distribution of Pb, Zn and Cu in different chemical forms in core sediments. Four sediment cores were collected from upstream to downstream of the Brahmaputra river. Metal speciation study revealed that most of the heavy metals were associated with the residual fraction. Among non-residual fraction Zn and

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Staszel, Karolina, Jarosław Lasota, and Ewa Błońska. "Soil Organic Matter Fractions in Relation to Root Characteristics of Different Tree Species in Altitude Gradient of Temperate Forest in Carpathian Mountains." Forests 13, no. 10 (2022): 1656. http://dx.doi.org/10.3390/f13101656.

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The roots are a key functional component of belowground systems and one of the main factors influencing the quality and quantity of soil organic matter. Our research aimed to determine the fractional composition of the soil organic matter (SOM) in soils under various tree species on an altitude gradient. In our research, we related the SOM fractions with the root characteristics. There is a lack of information on the relationship between the SOM fractions and the root properties. We assessed labile and heavy fractions of SOM content in forest mountain soils with a climosequence approach. The s

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Al-Hamdani, Jawdat Abdul Jalil, Salih Muhammad Awadh, and Ommer Sabah Ibrahim. "GEOCHEMICAL PARTITIONING OF HEAVY METALS IN THE URBAN SOIL, KIRKUK, IRAQ." Iraqi Geological Journal 39-49, no. 1 (2016): 1–24. http://dx.doi.org/10.46717/igj.39-49.1.1ms-2016-06-23.

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This work focused on anthropogenic influences of the trace metals distribution in the soils of Kirkuk city. Sequential extraction technique was used to determine the distribution of the chemical fractions of Ag, Cd, Co, Cu, Ni, Pb, Zn, As, Cr and V in soil of Kirkuk city. This area is affected mainly by burning oil trash. Results show that these heavy metals were primarily restricted to surface horizons and mostly associated with the residual fraction (28.8 – 50%). The remnant fractions (13.8 – 33.1%) linked to the organic matter, 7.9 – 27.2% was bound to Fe-Mn oxide, 0.7 – 27.9 was bound to c

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Barančíková, G., and J. Makovníková. "The influence of humic acid quality on the sorption and mobility of heavy metals." Plant, Soil and Environment 49, No. 12 (2011): 565–71. http://dx.doi.org/10.17221/4195-pse.

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Mobile and potentially mobile forms of heavy metals are probably one of the most important toxic hazards in the environment. Besides pH, which is a&nbsp;factor influencing the mobility/availability of heavy metals to the greatest extent, the content and mainly the quality of soil organic matter play a&nbsp;very important role in the evaluation of heavy metal behaviour in the environment. The fraction of metals bound to organic compounds is exclusively associated with humic substances and particularly with humic acids (HA). A&nbsp;relationship between the parameters reflecting the a

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LEŠTAN, Domen, and Helena GRČMAN. "Speciation of lead, zinc and cadmium in contaminated soils from Mežica valley." Acta agriculturae Slovenica 77, no. 2 (2001): 205–14. http://dx.doi.org/10.14720/aas.2001.77.2.15714.

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A knowledge of the total amount of heavy metals in soil is not enough to assess the environmental impact and decide on suitability of polluted soils for agronomic use. Six-step sequential extraction procedure was used to determine the distribution of Pb, Zn and Cd among various fractions of soils from six locations in Mežica valley. Phyto-available heavy metals: water soluble heavy metal species and fraction exchangeable from colloids to soil solution, accounted in average for 0.23-1.14% of Pb, 0.36-3.88% of Zn and 0-8.2% of Cd. The majority of heavy metal species was found to reside in non ph

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N'dayegamiye, A., and D. A. Angers. "Organic matter characteristics and water-stable aggregation of a sandy loam soil after 9 years of wood-residue applications." Canadian Journal of Soil Science 73, no. 1 (1993): 115–22. http://dx.doi.org/10.4141/cjss93-011.

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The long-term effects of wood-residue applications on soil properties are not well documented. This study was undertaken to characterize the organic matter and aggregation of a sandy loam after 9 yr of biennial application of wood residues (tree clippings) at rates of 25, 50 and 100 Mg ha−1 with and without nitrogen fertilization. Carbon (C) and nitrogen (N) contents of the whole soil were determined as well as the C content of the density fractions and of the fractions soluble and insoluble to Na4P2O7. In comparison with the control, the whole-soil C content was 16–24% higher following applic

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Parvin, Afsana, Mohammad Moniruzzaman, Md Kamal Hossain, et al. "Chemical Speciation and Potential Mobility of Heavy Metals in Organic Matter Amended Soil." Applied and Environmental Soil Science 2022 (July 5, 2022): 1–13. http://dx.doi.org/10.1155/2022/2028860.

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Organic matter (OM) degradation from amendments used in the remediation of metal-contaminated soils leads to modifications in soil chemical properties immediately after addition, which can also affect the soil metal distribution. Therefore, the speciation and potential mobility of heavy metals e.g., lead (Pb) and cadmium (Cd) were evaluated in three soils amended with OM. Soils, both spiked (with lead nitrate and cadmium nitrate solution) and unspiked, were treated with OM at a rate of 5 tons/ha in a moist condition. The samples were in incubation for 30 days in 30% moist condition. A chemical

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PRADO, MARCELO RIBEIRO VILELA, FABRICIO TOMAZ RAMOS, OSCARLINA LÚCIA DOS SANTOS WEBER, and CAIO BATISTA MÜLLER. "ORGANIC CARBON AND TOTAL NITROGEN IN THE DENSIMETRIC FRACTIONS OF ORGANIC MATTER UNDER DIFFERENT SOIL MANAGEMENT." Revista Caatinga 29, no. 2 (2016): 263–73. http://dx.doi.org/10.1590/1983-21252016v29n201rc.

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ABSTRACT: The evaluation of land use and management by the measurement of soil organic matter and its fractions has gained attention since it helps in the understanding of the dynamics of their contribution to soil productivity, especially in tropical environments. This study was conducted in the municipality of Colorado do Oeste, state of Rondônia, Brazil and its aim was to determinethe quantity of organic carbon and total nitrogen in the light and heavy fractions of organic matter in the surface layers of a typic hapludalf under different land use systems: Native Forest: open evergreen fores

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Dalal, RC, and RJ Mayer. "Long term trends in fertility of soils under continuous cultivation and cereal cropping in southern Queensland .VI. Loss of total nitrogen from different particle size and density fractions." Soil Research 25, no. 1 (1987): 83. http://dx.doi.org/10.1071/sr9870083.

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The dynamics of total N in particle-size and density fractions of six major soils which have been used for cereal cropping for 20-70 years were studied in order to identify the labile organic matter fractions in soil. For virgin soils, no single particle-size was consistently enriched in N as compared with the whole soil. The clay fraction contained the largest proportion (53% overall) of total N. Silt-size and sand-size N fractions accounted for 26% and 21% of total N, respectively. Upon cultivation, the sand-size fraction lost most of its N (as much as 89% in Langlands-Logie soil). However,

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Dissertations / Theses on the topic "Heavy fraction organic matter"

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Karapanagiotis, Nicolas Konstantine. "Heavy metal retention by the organic fraction of sewage sludge." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342264.

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Hardin, John Wesley. "Quantification of soluble organic fraction measurement variation in diesel particulate matter emissions." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=6007.

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Thesis (M.S.)--West Virginia University, 2008.<br>Title from document title page. Document formatted into pages; contains ix, 135 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 52-53).

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Barajas-Aceves, Martha. "Soil microbial biomass and organic matter dynamics in metal-contaminated soils." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260604.

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van, Schaik Joris W. J. "Binding of metals to macromolecular organic acids in natural waters : does organic matter? /." Uppsala : Department of Soil and Environment, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200872.pdf.

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Zhou, Zhe. "Fe(II)-catalyzed transformation of ferrihydrite associated with natural organic matter." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6670.

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The association between natural organic matter (NOM) and iron (Fe) minerals was widely found in soil and sediments and has been shown to impact the fate of Fe minerals and NOM. Ferrihydrite, a ubiquitous Fe mineral, serves as important sink for NOM and rapidly transforms to secondary Fe minerals in the presence of Fe(II). The associated NOM has been found to influence the Fe(II)-catalyzed ferrihydrite transformation pathway, but it remains unclear how various NOM affects this transformation and the implication. This study specifically investigates how different species of NOM affect Fe(II)-cat

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Ashworth, Daniel J. "The effects of dissolved organic matter on the behaviour of heavy metals in sewage sludge-amended soils." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394419.

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LAZZATI, ZELDA. "Speciation of particulate matter's organic fraction and its mechanis of action on human health." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2009. http://hdl.handle.net/10281/7466.

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Three main researches have been employed for the implementation of a protocol analysis for the characterization and quantification of the lignin fraction in the particulate matter at the concentration matrix level; the implementation of different methods of analysis of the toxic interesting pollutants, Oxy-PAHs; Nitro-PAHs and the Bisphenol A, that together with the large set of performed analysis, allowed the characterization of some PM fractions in relation with Indoor and Outdoor concentrations, human exposure and Urban – Rural – Remote sites composition. At last an in silica method was dev

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Lozenko, Sergii. "Heavy metal ion sensors based on organic microcavity lasers." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2011. http://tel.archives-ouvertes.fr/tel-00744846.

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Monitoring of environmental pollutants present at low concentrations requires creation of miniature, low-cost, and highly sensitive detectors that are capable to specifically identify target substances. In this thesis, a detection approach based on refractive index sensing with polymer micro-lasers is proposed and its application to the detection of heavy metal pollutants in water (mercury - Hg2+, cadmium - Cd2+ and lead - Pb2+) is studied. The resonance frequencies of the microcavity are highly sensitive to the refractive indices of the resonator surrounding: the resonances shift by a small a

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LONGHIN, ELEONORA MARTA. "Particulate matter toxicity and health effects : in vitro assessment of the mechanisms of action." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/29888.

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Urban airborne particulate matter (PM) is known to increase morbidity and mortality due to cardiopulmonary diseases related to inflammatory processes and genotoxic effects. The study of PM-induced toxicity represents a very important field in order to understand the clinical outcomes and define the most harmful components involved. Despite the researchers’ effort, there are still unresolved questions regarding the cell mechanisms inducing the different adverse effects. Moreover, which PM components are more significant in determining the biological responses is still a debated question, althou

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Fairley, Maureen A. M. A. "The influence of sewage sludge-derived organic matter on the mobility and speciation of heavy metals in colliery spoil." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/13810.

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Sewage sludge and colliery spoil can be used in the reclamation of contaminated land. Heavy metals may be present in both spoil and sludge at higher than background levels. The decomposition of sewage sludge produces soluble organic molecules which can form complexes with heavy metals. The object of this thesis was to discover if authigenic metals in colliery spoil would be mobilised as a result of the presence of organic matter derived from sewage sludge. A laboratory experiment was conducted using 24 PVC columns (length 50 cm, diameter 6 cm) filled with colliery spoil (weight 1.8 kg) from th

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Books on the topic "Heavy fraction organic matter"

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Brown, Craig J. Heavy minerals and sedimentary organic matter in Pleistocene and Cretaceous sediments on Long Island, New York, with emphasis on pyrite and marcasite in the Magothy aquifer. U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

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Ed, DeWitt, Desborough George A, and Geological Survey (U.S.), eds. Implications of hydrocarbons in carbonaceous metamorphic and hydrothermal ore-deposit rocks as related to the hydrolytic disproportionation of organic matter. U.S. Dept. of the Interior, U.S. Geological Survey, 1998.

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Soil organic matter and their interactions with metals: Processes, factors, ecological significance. Nova Science Publishers, 2012.

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Hall, Roger. Soil Essentials. CSIRO Publishing, 2008. http://dx.doi.org/10.1071/9780643095632.

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Soil Essentials is a practical reference for farmers and land managers covering soil issues commonly encountered at the farm level. Written in a straightforward style, it explains the principles of soil management and the interpretation of soil tests, and how to use this information to address long-term soil and enterprise viability. This book demonstrates how minerals, trace elements, organic matter, soil organisms and fertilisers affect soil, plant and animal health. It shows how to recognise soil decline, and how to repair soils affected by nutrient imbalances, depleted soil microbiol

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Book chapters on the topic "Heavy fraction organic matter"

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Silva, M. Elisabete F., L. Teixeira de Lemos, O. C. Nunes, and A. C. Cunha-Queda. "Correlation Between Humic-Like Substances and Heavy Metals in Composts." In Functions of Natural Organic Matter in Changing Environment. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5634-2_93.

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Schulin, R., G. Geiger, and G. Furrer. "Heavy Metal Retention by Soil Organic Matter under Changing Environmental Conditions." In Biogeodynamics of Pollutants in Soils and Sediments. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79418-6_3.

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Shikhova, Lyudmila N., Olga A. Zubkova, and Eugene M. Lisitsyn. "Dynamics of Organic Matter Content in Sod-Podzolic Soils Differ in Degree of Cultivation." In Heavy Metals and Other Pollutants in the Environment. Apple Academic Press, 2017. http://dx.doi.org/10.1201/9781315366029-3.

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Duhl, Tiffany R., Nicholas Clements, Natalie Mladenov, Kaelin Cawley, Fernando L. Rosario-Ortiz, and Michael P. Hannigan. "Natural and Unnatural Organic Matter in the Atmosphere: Recent Perspectives on the High Molecular Weight Fraction of Organic Aerosol." In ACS Symposium Series. American Chemical Society, 2014. http://dx.doi.org/10.1021/bk-2014-1160.ch005.

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Medyńska-Juraszek, Agnieszka, and Leszek Kuchar. "Carbon Sequestration Rates in Organic Layers of Soils Under the Grey Poplar (Populus x canescens) Stands Impacted by Heavy Metal Pollution." In Functions of Natural Organic Matter in Changing Environment. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5634-2_66.

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Cuss, C. W., and C. Guéguen. "Characterizing the Labile Fraction of Dissolved Organic Matter in Leaf Leachates: Methods, Indicators, Structure, and Complexity." In Labile Organic Matter-Chemical Compositions, Function, and Significance in Soil and the Environment. Soil Science Society of America, Inc., 2015. http://dx.doi.org/10.2136/sssaspecpub62.2014.0043.

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Singh, Jaswant, and Brijesh Kumar Yadav. "Adsorption of Heavy Metal with Aged Microplastic in Groundwater Under Varying Organic Matter Content." In Ground Water Contamination in India. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-49092-7_1.

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Fadzilah, Muhamad Hanif Harif, Jamil Tajam, Mohd Lias Kamal, and Norsila Daim. "Distribution of Heavy Metals, Organic Matter and Mean Size in Sediment at the Perlis River." In From Sources to Solution. Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4560-70-2_91.

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Tamis, L. M. W., P. Lagas, and R. Berg. "First Results on the Effects of Direct Thermal Treatment on Soil Organic Matter and Availability of Heavy Metals." In Soil & Environment. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2018-0_195.

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Li, Yuanhang, and Xiaofeng Gong. "Effects of Dissolved Organic Matter on the Bioavailability of Heavy Metals During Microbial Dissimilatory Iron Reduction: A Review." In Reviews of Environmental Contamination and Toxicology Volume 257. Springer International Publishing, 2021. http://dx.doi.org/10.1007/398_2020_63.

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Conference papers on the topic "Heavy fraction organic matter"

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Tomlin, John L., Horace E. Durham, and James Carr. "The Use of an Organic Dispersant as Primary Treatment in a Textile Air Washer and Cooling Water System a Case History." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86021.

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Abstract In the textile industry, temperature and humidity are critical to production and air washers are utilized to control both. Besides regulating temperature and humidity, air washers "wash" the air free of particulate matter. This continuous "washing" introduces a heavy loading of contaminants on these systems and makes deposit control the primary treatment concern. Clinton Mills, Geneva, Alabama, is a textile manufacturing plant where, historically, the air washers required a lot of attention. Deposits were heavy, mainly oil and microbiological matter, and resulted in continuous pluggin

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Yoon, Yuhchae, Hui Li, and Kwei Meng Yap. "Naphthenic Acid Corrosion and Sulfidic Corrosion in Crude Oil Fractions." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17533.

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ABSTRACT Crude Corrosivity issues manifest themselves at locations where fluid flow rates and velocities are relatively high in atmospheric distillation units, vacuum distillation units, transfer lines, valves, baffles, heat exchangers, and side cut piping in refinery systems. The heavy vacuum gas oil fraction of the vacuum distillation plant is the crude fraction which usually has the highest total acid number (TAN) due to high concentration of naphthenic acids close to their boiling points. This mechanism of non-aqueous corrosion in the presence of crude oil or oil fractions with high quanti

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Elsukova, Ekaterina, Ivan Nedbaev, Anastasiya Kraves, and Daria Khloptsova. "ECOLOGICAL MONITORING OF SOIL AND PLANT CONDITIONS IN SPECIALLY PROTECTED NATURAL AREA." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/5.1/s20.12.

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Environmental monitoring in specially protected areas is a vital problem, especially in places subject to anthropogenic impacts. The Tunkinskaya Valley (190 km long) is the western extension of the Baikal rift zone. On the territory of the valley there is a national park of federal significance. At the same time, the territory is subject to intensive anthropogenic load. The Tunkinskaya Valley is an attractive place for tourists. The local population (20,000 people) is engaged in cattle breeding. Industrialized areas of the Baikal region may also have an impact on the valley ecosystems. The pap

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Tsukamoto, Tatsuro, Kenji Ohe, and Hiroshi Okada. "Particulate Emissions From a Two-Stroke Marine Diesel Engine Operated With Heavy Fuel Oil." In ASME 2002 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/icef2002-503.

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In these years, a problem of air pollution in a global scale becomes a matter of great concern. In such social situation, diesel engines are strongly required to reduce the NOx and particulate emission in the exhaust gas. In this paper, measurements of particulate emissions from a low speed two-stroke marine diesel engine were conducted with several kinds of diesel oil and a heavy fuel oil, to know the characteristics of particulate emissions at the present situation. The effects of engine load and sulfur content of the fuel on the particulate emission have been examined. The particulate emiss

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Novakovic, Maja, Axel Eriksson, Louise Gren, et al. "Fresh and Aged Organic Aerosol Emissions from Renewable Diesel-Like Fuels HVO and RME in a Heavy-Duty Compression Ignition Engine." In WCX SAE World Congress Experience. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0392.

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<div class="section abstract"><div class="htmlview paragraph">A modern diesel engine is a reliable and efficient mean of producing power. A way to reduce harmful exhaust and greenhouse gas (GHG) emissions and secure the sources of energy is to develop technology for an efficient diesel engine operation independent of fossil fuels. Renewable diesel fuels are compatible with diesel engines without any major modifications. Rapeseed oil methyl esters (RME) and other fatty acid methyl esters (FAME) are commonly used in low level blends with diesel. Lately, hydrotreated vegetable oil (HV

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Ribeiro, A., C. Vilarinho, J. Araújo, and J. Carvalho. "Electrokinetic Remediation of Contaminated Soils With Chromium." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87552.

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Soil is a vital natural resource that regulates our environment sustainability and provide essential resources to humans and nature. Nowadays, with an increasingly populated and urbanized world, pollution is widely recognized as a significant challenge to soil and groundwater resources management. The most common chemicals found in soils and water plumb in a dissolved state and considered as potential pollutants are heavy metals, dyes, phenols, detergents, pesticides, polychlorinated biphenyls (PCBs), and others organic substances, such as organic matter. Unlike organic contaminants, heavy met

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Veleva, Blagorodka, Elena Hristova, and Ivan Beslic. "CHEMICAL COMPOSITION OF FINE AIR PARTICULATE MATTER IN URBAN CONDITIONS." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/4.1/s19.33.

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Airborne particulate matter (APM), and in particular its fine fraction PM2.5, is well known as an important pollutant in the urban atmosphere worldwide. The health effects of APMs depend not only on their size but also on their chemical composition. Black carbon (BC), heavy metals and other constituents can impact human health and climate. The main sources of BC are the incomplete combustion of fossil fuels, biomass burning and other organic materials. Resuspension of soil and road materials, secondary aerosol formation, and industrial emissions are major sources of many elements attached to t

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Ribeiro, A., C. Vilarinho, J. Araújo, and J. Carvalho. "Development of an Integrated Process for Eggshell Valorization." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38836.

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The current global trend towards more stringent environmental standards, technical applicability and cost-effectiveness, became key factors in the selection of adsorbents. After demonstrating the performance of eggshell-derived adsorbent under a range of lab operating conditions, this work focused the adsorption efficiency of calcined eggshell powder (CEP), in the treatment of wastewaters from different industrial units. In order to do it, the removal of organic material, expressed as chemically oxygen demand (COD), was monitored in leachate wastewaters from sanitary landfill (LLWW) and in mun

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Pischinger, S., and M. Umierski. "Impact of Fuel Preparation System on Combustion Process and Exhaust Emissions." In ASME 2003 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ices2003-0574.

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In the past decade, the quality of Heavy Fuel Oil (HFO) has not improved or even declined in general. The progress in refinery techniques allowed to use a higher percentage of the crude oil for light fuels and other components. Therefore, the concentration of heavy components and agglomerates in the residual fuel increased. On the other hand, a better exhaust quality without compromising the superior fuel consumption of HFO-fuelled engines can only be gained by improved fuel injection. High injection pressures, rate shaping and electronic control of injection timing as well as new injection te

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Chen, Zeya, Jianfa Chen, and Caisheng Fei. "The Character and Origin of Abnormal Heavy Carbon Isotope Composition in Sedementary Organic Matter." In 29th International Meeting on Organic Geochemistry. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902913.

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Reports on the topic "Heavy fraction organic matter"

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Chefetz, Benny, Baoshan Xing, Leor Eshed-Williams, Tamara Polubesova, and Jason Unrine. DOM affected behavior of manufactured nanoparticles in soil-plant system. United States Department of Agriculture, 2016. http://dx.doi.org/10.32747/2016.7604286.bard.

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The overall goal of this project was to elucidate the role of dissolved organic matter (DOM) in soil retention, bioavailability and plant uptake of silver and cerium oxide NPs. The environmental risks of manufactured nanoparticles (NPs) are attracting increasing attention from both industrial and scientific communities. These NPs have shown to be taken-up, translocated and bio- accumulated in plant edible parts. However, very little is known about the behavior of NPs in soil-plant system as affected by dissolved organic matter (DOM). Thus DOM effect on NPs behavior is critical to assessing the

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Fan, Teresa W. M., Richard M. Higashi, and Crowley. Mechanisms of Heavy Metal Sequestration in Soils: Plant-Microbe Interactions and Organic Matter Aging. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/834659.

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Teresa W.-M. Fan, Richard M. Higashi, David Crowley, Andrew N. Lane: Teresa A. Cassel, and Peter G. Green. Mechanisms of Heavy Metal Sequestration in Soils: Plant-Microbe Interactions and Organic Matter Aging. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/836894.

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Fan, Teresa W. M., and Richard M. Higashi. Mechanisms of Heavy Metal Sequestration in Soils: Plant-Microbe Interactions and Organic Matter Aging. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/827411.

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Chefetz, Benny, and Baoshan Xing. Sorption of hydrophobic pesticides to aliphatic components of soil organic matter. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7587241.bard.

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Sorption of hydrophobic compounds to aliphatic components of soil organic matter (SOM) is poorly understood even though these aliphatic carbons are a major fraction of SOM. The main source of aliphatic compounds in SOM is above- and below-ground plant cuticular materials (cutin, cutan and suberin). As decomposition proceeds, these aliphatic moieties tend to accumulate in soils. Therefore, if we consider that cuticular material contributes significantly to SOM, we can hypothesize that the cuticular materials play an important role in the sorption processes of hydrophobic compounds (including pe

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de Caritat, Patrice, Brent McInnes, and Stephen Rowins. Towards a heavy mineral map of the Australian continent: a feasibility study. Geoscience Australia, 2020. http://dx.doi.org/10.11636/record.2020.031.

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Heavy minerals (HMs) are minerals with a specific gravity greater than 2.9 g/cm3. They are commonly highly resistant to physical and chemical weathering, and therefore persist in sediments as lasting indicators of the (former) presence of the rocks they formed in. The presence/absence of certain HMs, their associations with other HMs, their concentration levels, and the geochemical patterns they form in maps or 3D models can be indicative of geological processes that contributed to their formation. Furthermore trace element and isotopic analyses of HMs have been used to vector to mineralisatio

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Banin, Amos, Joseph Stucki, and Joel Kostka. Redox Processes in Soils Irrigated with Reclaimed Sewage Effluents: Field Cycles and Basic Mechanism. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7695870.bard.

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The overall objectives of the project were: (a) To measure and study in situ the effect of irrigation with reclaimed sewage effluents on redox processes and related chemical dynamics in soil profiles of agricultural fields. (b) To study under controlled conditions the kinetics and equilibrium states of selected processes that affect redox conditions in field soils or that are effected by them. Specifically, these include the effects on heavy metals sorption and desorption, and the effect on pesticide degradation. On the basis of the initial results from the field study, increased effort was de

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Warrick, Arthur W., Gideon Oron, Mary M. Poulton, Rony Wallach, and Alex Furman. Multi-Dimensional Infiltration and Distribution of Water of Different Qualities and Solutes Related Through Artificial Neural Networks. United States Department of Agriculture, 2009. http://dx.doi.org/10.32747/2009.7695865.bard.

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The project exploits the use of Artificial Neural Networks (ANN) to describe infiltration, water, and solute distribution in the soil during irrigation. It provides a method of simulating water and solute movement in the subsurface which, in principle, is different and has some advantages over the more common approach of numerical modeling of flow and transport equations. The five objectives were (i) Numerically develop a database for the prediction of water and solute distribution for irrigation; (ii) Develop predictive models using ANN; (iii) Develop an experimental (laboratory) database of

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Phillips, Donald A., Yitzhak Spiegel, and Howard Ferris. Optimizing nematode management by defining natural chemical bases of behavior. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7587234.bard.

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This project was based on the hypothesis that nematodes interacting with plants as either parasites or beneficial saprophytes are attracted to their host by natural products. This concept was supported by numerous observations that parasitic nematodes are attracted to root exudates. Our overall goal was to identify nematode sensory compounds from root exudates and to use that information for reducing nematicide applications. We applied skills of the investigators to achieve three specific objectives: 1) Identify nematode behavioral cues (e.g., attractants or repellents) in root exudates; 2) Id

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Shenker, Moshe, Paul R. Bloom, Abraham Shaviv, et al. Fate of Phosphorus Originated from Treated Wastewater and Biosolids in Soils: Speciation, Transport, and Accumulation. United States Department of Agriculture, 2011. http://dx.doi.org/10.32747/2011.7697103.bard.

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Beneficial use of reclaimed wastewater (RW) and biosolids (BS) in soils is accompanied by large input of sewage-originated P. Prolonged application may result in P accumulation up to levelsBeneficial use of reclaimed wastewater (RW) and biosolids (BS) in soils is accompanied by large input of sewage-originated P. Prolonged application may result in P accumulation up to levels that impair plant nutrition, increase P loss, and promote eutrophication in downstream waters. This study aims to shed light on the RW- and BS-P forms in soils and to follow the processes that determine P reactivity, solu

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