bioaccumulation hazard identification of metals and inorganic metal substances
Assessing the hazard of metals and inorganic metal substances in aquatic and terrestrial systems
... Assessing the Hazard of Metals and Inorganic Metal Substances that metals are conserved, the form and availability of the metal can change and are different for each metal element Bioaccumulation ... 9:07 AM 24 Assessing the Hazard of Metals and Inorganic Metal Substances 3.4.1 NATURAL OCCURRENCE OF METALS Metals are natural constituents of all rocks, soil, water, air, and sediments, which over ... biodegradation/persistence and bioaccumulation/ biomagnification of metals and metal compounds Brussels, Belgium Chapman PM, Wang F 2000 Issues in ecological risk assessment of inorganic metals and metalloids...
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Assessing the Hazard of Metals and Inorganic Metal Substances in Aquatic and Terrestrial Systems - Chapter 1 ppsx
... application of traditional PBT hazard evaluation tools for inorganic metals and metal substances (collectively termed metals) and that additional tools and techniques may be needed for the proper hazard ... massive metals and insoluble sulfide and metal oxide forms 1.3 WORKSHOP PURPOSE AND GOALS The purpose of this workshop was to identify limitations in the use of PBT for hazard assessment of metals and ... biodegradation/persistence and bioaccumulation/ biomagnification of metals and metal compounds Brussels, Belgium Chapman PM, Wang F 2000 Issues in ecological risk assessment of inorganic metals and metalloids...
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Assessing the Hazard of Metals and Inorganic Metal Substances in Aquatic and Terrestrial Systems - Chapter 4 pptx
... the Hazard of Metals and Inorganic Metal Substances gateways for the metal to cross the membrane This is in contrast to neutral organic substances, which are lipophilic and hydrophobic, and accumulate ... AM 60 Assessing the Hazard of Metals and Inorganic Metal Substances snails have been shown to assimilate relatively high proportions (40 to 80%) of metals associated with metal- rich granules ... 9:09 AM 76 Assessing the Hazard of Metals and Inorganic Metal Substances These models show good agreement between predicted and observed concentrations for some of the metals studied In the 2-compartment...
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Assessing the Hazard of Metals and Inorganic Metal Substances in Aquatic and Terrestrial Systems - Chapter 5 ppsx
... Environmental Toxicology and Chemistry (SETAC) 44400_book.fm Page 104 Wednesday, November 8, 2006 3:56 PM 104 Assessing the Hazard of Metals and Inorganic Metal Substances Mass of metal compound resulting ... (ILZRO), 34 p With permission © 2007 by the Society of Environmental Toxicology and Chemistry (SETAC) Assessing the Hazard of Metals and Inorganic Metal Substances pH 44400_book.fm Page 96 Wednesday, ... by the Society of Environmental Toxicology and Chemistry (SETAC) 44400_book.fm Page 100 Wednesday, November 8, 2006 3:56 PM 100 Assessing the Hazard of Metals and Inorganic Metal Substances TABLE...
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Assessing the Hazard of Metals and Inorganic Metal Substances in Aquatic and Terrestrial Systems - Chapter 6 (end) docx
... 15, 2006 9:11 AM 114 Assessing the Hazard of Metals and Inorganic Metal Substances 6.3 PERSISTENCE OF METALS IN SOIL 6.3.1 RESIDENCE TIME OF METALS IN SOIL Metals persist in soil due to their ... accounting for potential changes in climate and land use 6.3.3 AGING OF METALS IN SOIL Persistence of total metals in soil and persistence of metal bioavailability and solubility are not the same In the ... 15, 2006 9:11 AM 130 Assessing the Hazard of Metals and Inorganic Metal Substances microbes, and invertebrates appears to vary among metals; a large variation in metaltoxicity ranking among soils...
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Báo cáo y học: "Identification of clinical and simple laboratory variables predicting responsible gastrointestinal lesions in patients with iron deficiency anemia"
... endoscopic and radiographic Asymptomatic colonic and gastric carcinoma may present with IDA and exclusion of these conditions is of prime concern The upper endoscopic evaluation should include random ... yield of endoscopy in patients with IDA and to define predictive factors of gastrointestinal (GI) lesions causing IDA and identify clinical and biochemical variables that predict the outcome of ... presence of dyspeptic complaint and its severity calculated by presence of abdominal pain, abdominal pain with hungry and anxiety, abdominal distension, nausea, vomiting, poor appetite and symptoms of...
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Tài liệu Báo cáo khoa học: "Automatic Identification of Pro and Con Reasons in Online Reviews" ppt
... Sources of Opinions with Conditional Random Fields and Extraction Patterns Proceedings of HLT/EMNLP-05 Esuli, Andrea and Fabrizio Sebastiani 2005 Determining the semantic orientation of terms ... Proceedings of COLING-04 pp 1367-1373 Geneva, Switzerland Kim, Soo-Min and Eduard Hovy 2005 Automatic Detection of Opinion Bearing Words and Sentences In the Companion Volume of the Proceedings of IJCNLP-05, ... about specific and tangible features Also, there are somewhat a fixed set of features of a specific type of product, for example, ease of use, durability, battery life, photo quality, and shutter...
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Báo cáo y học: "4th meeting of the EU research network EUROME: From the identification of genes and cellular networks in murine models of arthritis to novel therapeutic intervention strategies in rheumatoid arthritis, London, UK, 9 March 2004" pot
... Ibrahim and Paleolog as lymph nodes and joints at various stages of disease in susceptible DBA/1J and resistant FVB/N strains In parallel, a genome screen was performed of the F2 progeny mice of a ... susceptible and resistant rat strains Several loci that control the onset of arthritis, the severity and chronicity of the disease, and autoantibody production have been identified and been confirmed ... activation, as well as expression of antiapoptotic proteins Bcl-2 and members of the inhibitor of apoptosis family (cIAP-1, XIAP and survivin, which directly bind to and inhibit caspases), was strikingly...
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High Temperature Strain of Metals and Alloys Part 1 ppt
... parameters of the matrix and of the hardening phase The subject of the last chapter is the peculiarities of the strain behavior of refractory metals A detailed review of all aspects of the problem ... materials, energy, technology, and information Metals and alloys are materials, which have been widely used by mankind for thousands of years, and this is no mere chance: metals have many remarkable ... source of indirect information about physical processes that take place in the atomic crystal lattice of metals and alloys However, if we want to understand the nature of these processes and to...
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High Temperature Strain of Metals and Alloys Part 2 pptx
... plan demands first an efficient structural investigation and detailed proofs of correctness of physical models An in situ investigation of metals is necessary in order to address the problem of the ... solutions and superalloys Metals with face-centered and body-centered crystal lattices were examined: nickel, copper, iron, vanadium, niobium and molybdenum Nickel and iron are two of the most ... investigations of metals and alloys directly during high-temperature deformation The method of measurement of the irradiation intensities, which are diffracted by separate crystallites of the investigated...
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High Temperature Strain of Metals and Alloys Part 3 pdf
... facecentered metals at temperatures of (0.40–0.70) Tm , and for body-centered ¯ metals at (0.45–0.65) Tm The values of D and η depend upon external pa¯ ¯ rameters, especially stress D decreases, and ... is of great importance for our understanding of the physical mechanism of high-temperature deformation Fig 3.16 Histograms of the distribution of distances between jogs in screw components of ... observed very often in the structure of the high-temperature tested metals Dark-field analysis makes it possible to determine the sign and the type of loops The loops have been found to be of the vacancy...
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High Temperature Strain of Metals and Alloys Part 4 ppsx
... Structural Parameters in High-Temperature Deformed Metals pure metals Larger values of η are observed in solid solutions as compared with metals Most of the dislocations in specimens are associated ... three or four orders of magnitude at 850–1050K) 4.6 Formation of Jogs Fig 4.10 Comparison of the temperature dependence of the creep rates ε under stress of 80 MPa (a) and of the ˙ mean-square ... formation and rupture This seems to be the essence of the tertiary stage of creep The distance between dislocations in sub-boundaries decreases during the primary stage of deformation and the role of...
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High Temperature Strain of Metals and Alloys Part 5 pdf
... understanding of dislocation processes in these ranges of temperature and stress is of great practical importance Most heat-resistant metals, steels and alloys operate at temperatures between 0.40 and ... term on the right-hand side of Eq (4.27) In Fig 4.17 the calculated curves of the influence of temperature and stress on the Γ value are shown for two metals The probability of dislocation emission ... quantitative evaluation of the strain rate was out of the question at that time, of course As a matter of fact, the adjacent jogs of opposite signs slip along the dislocation line easily and would simply...
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High Temperature Strain of Metals and Alloys Part 6 doc
... consists of a matrix i.e of the γ phase and particles of the hardening γ phase The γ phase is a solid solution with a face-centered crystal lattice and randomly distributed different species of atoms ... lattice of type L12 (Fig 6.1) In pure Ni3 Al phase atoms of aluminum are placed at the vertices of the cubic cell and form the sublattice A Atoms of nickel are located at the centers of the faces and ... influence of the D and λ parameters, we deformed specimens of nickel by 3% and 7% at room temperature and then annealed them at 873K As a result we obtained the various average subgrain sizes and misorientations...
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High Temperature Strain of Metals and Alloys Part 7 pot
... diagonal [10¯ atoms of 1] aluminum and nickel are altered Atoms of Ni that are denoted as and of Al that are denoted as are located in the first slip plane Atoms of Ni and of Al are located in ... The value of ∆U in Eq (6.8) is close to the activation energy of generation and migration of vacancies in the ordered phase The sum of these values is known to be the energy activation of diffusion ... used the results of measurements of the particle sizes and the data of the strain rate tests 99 100 High-temperature Deformation of Superalloys Finally, the minimum strain rate of a superalloy...
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High Temperature Strain of Metals and Alloys Part 8 docx
... strength of a superalloy Methods of prediction of the properties of new superalloys are being developed on the basis of integrated databases of superalloy composition and test results The error of ... the properties of a new superalloy This approach does not take into account the physical processes The structure of alloys, solution and precipitation of phases, the influence of elements on ... influence of alloying elements upon the properties of superalloys Titanium and aluminum, when used as the γ formers, increase creep rupture stress However, the respective influence of Al and Ti...
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High Temperature Strain of Metals and Alloys Part 9 potx
... physical mechanism of strain of the investigated superalloys There exists a competition between the Orowan mechanism of bowing of the dislocations between the γ particles and the cutting of particles ... also occur when a population of a/2 < 112 > dislocations has become established and if the shear stress is sufficiently high The addition of rhenium and ruthenium and the ageing heat treatment ... H and J) The tertiary creep rate depends more upon the applied stress than on the misorientation (Fig 7.12) It is of interest to compare the shape of curves in Figs 7.12 and 7.8 The effect of...
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High Temperature Strain of Metals and Alloys Part 11 docx
... sub-boundaries and subgrains increases, and the structure eventually becomes cellular 8.2 Alloys of Refractory Metals A review of the creep behavior of refractory metal alloys has been published [53] ... 0.3Hf The microstructure of extruded and recrystallized material consists of a solid solution and of particles of titanium carbide, TiC The particle sizes are between 200 and 500 nm Creep curves ... behavior of the refractory metal alloys The corresponding nominal compositions of alloys are presented in Table 8.3 Molybdenum-, niobium- and tantalum-based alloys have been developed, studied and...
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High Temperature Strain of Metals and Alloys Part 12 docx
... unpinning of dislocations, J Appl Phys 1964, 35(9), 2732–2745 26 H.J Frost, M.F Ashby, Deformation-mechanism maps, the plasticity and creep of metals and ceramic, Dartmouth College, USA and Cambridge ... Pishchak, The substructure evolutions and the high-temperature creep mechanisms of metals with face- and body-centered crystal lattices, PhD thesis, Institute for Metal Physics, NASU, Kiev, 1994 25 ... Substructural changes and mechanisms of strain and fracture of molybdenum during creep, Met Phys Adv Technol 1995, 15 (1), 46–54 References 53 R.W Buckman Jr, The creep behavior of refractory metal alloys,...
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báo cáo khoa học: " Identification of miRNAs and their target genes in developing soybean seeds by deep sequencing" doc
... comparison of miRNA abundance in seeds and other organs of soybeans should uncover those miRNAs specifically expressed in seeds Identification of the corresponding target genes and study of their ... precursors of new miRNAs had regular stem-loop structures, and four of these, Soy_1, Soy_2, Soy_12 and Soy_20, were presented in Figure These RNA structures were predicted by MFOLD software and checked ... http://www.biomedcentral.com/1471-2229/11/5 Page 13 of 16 Figure GO analysis of targets of known and new miRNAs in this study Blue bars indicate the enrichment of miRNA targets in GO terms Green bars indicate the percentage of total annotated...
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