Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 259 for “"EDTA"”.
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Structures of lanthanide-edta complexes
The structures of six lanthanide-edta complexes were elucidated by X-ray diffraction, so as to ascertain exactly at which point the change from the nine-coordinate [Ln(edta)(H₂O)₃ ]- complex to the eight-coordinate [Ln(edta)(H₂O)₂]-complex occurs. The transition was found to occur at Erbium. The …
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Edta Titrations With Automatic Derivative Spectrophotometric End-Point Termination
Made available in DSpace on 2014-12-05T19:37:23Z (GMT). No. of bitstreams: 1 6001649.pdf: 3609383 bytes, checksum: 620f3cec2c3fff22ef1bb79641ef3d47 (MD5) Previous issue date: 1960
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Egy EDTA származék ligandum előállítása és Cu(II)-komplexének vizsgálata
… állandóit, amelyeket összehasonlítottunk a H4EDTA megfelelő értékeivel. Megállapítottuk, hogy a merevített szerkezetű BCPDA ligandum protonálódási állandói rendre kisebbek, mint azt az EDTA ligandumnál tapasztalták, ami egyértelműen a BCPDA merev szerkezetével magyarázható. A ligandumok …
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EDTA-enhanced metal contaminant removal from soils by electric fields
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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The Influence of Oxyanions on the EDTA-Promoted Dissolution of Goethite
Organic ligands, such as EDTA, accelerate the dissolution of silicate and oxide minerals. In natural systems oxyanions can compete with organic ligands for mineral surface sites thereby affecting ligand-promoted dissolution rates. Oxyanions can either enhance or inhibit dissolution depending upon …
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Synthesis and Characterization of Polyaminopolycarboxylic Acid Analogs of EDTA and Their Transition Metal Complexes
… with transition metal ions. Three analogs of EDTA have been successfully synthesized and characterized by i3C NMR: 1,3 PDTA (1,3-propylenediaminetetraacetic acid), 1,3-PDTP (1,3-propylenediaminetetrapropionic acid) and EDTP (ethylenediaminetetrapropionic acid). These ligands were then combined …
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Avaliação do complexo cromo-EDTA e da creatinina como indicadores de volume urinário em bovinos
Avaliação do complexo cromo-EDTA e da creatinina como indicadores de volume urinário em bovinos. Orientador: Edenio Detmann. Coorientadora: Luciana Navajas Rennó. A creatinina e o complexo Cr-EDTA infundido via intravenosa foram comparados como indicadores de estimação do volume urinário em …
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Phytoextraction of Lead from Contaminated Urban Soils by Panicum virgatum Enhanced with Phytohormone, EDTA, Benomyl, and Citric Acid Application
… of the soil-fungicide benomyl, chelates (EDTA and citric acid), and phytohormones for phytoextraction of Pb from contaminated urban soils in Atlanta, GA. EDTA is often regarded as the most effective chelate, but has potential problems associated with its use due to long persistence time in …
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Induced Phytoextraction of Lead from Contaminated Soils by Panicum virgatum, Enhanced with EDTA, Citric Acid, Benomyl, Propiconazole and Nitric Oxide
… tissues. Ethylenediamintetraacetic acid (EDTA) is regarded as a highly effective chelate, though its long soil persistence leads to potential concerns about Pb mobilization into groundwater. Citric acid has been proposed and found success as an alternative chelate that has a significantly …
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Removal of nickel and lead from natural clay soil through the introduction of EDTA and coupling ion exchange processes with electrokinetic methodology
… soils have inherently high pH values. The use of EDTA, EK methodology and ion exchange textiles is a new hybrid technique for the enhanced solubilization, transport and localization of Pb and Ni respectively in natural clayey soils. A four-point examination of many of the important system …
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ESTUDO COMPARATIVO DO EFEITO DA AMBIENTAÇÃO E DOS ANTICOAGULANTES EDTA E CITRATO DE SÓDIO SOBRE A AGREGAÇÃO PLAQUETÁRIA EM AMOSTRAS SANGUÍNEAS DE GATOS DOMÉSTICOS
… was transfered to an eppendorf container with EDTA and the other half was transfered to an eppendorf container with sodium citrate 3.2%. The samples was processed on the Clinical Pathology Laboratory of the UFPB Veterinary Hospital, by automatic counter and then the blood smears was prepared. …
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A comparative study of ROTEM-EXTEM results obtained from EDTA-treated whole blood samples and Sodium Citrate-treated whole blood samples in healthy volunteers
… prompted us to investigate the suitability of EDTA as anticoagulant for VET. Method: Blood samples from 20 healthy volunteers were divided into citrated and EDTA Vacutainer® tubes. A ROTEM EXTEM® assay was performed on each sample in both groups following the manufacturer's guidelines. Clotting …
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AVALIAÇÃO DA AGREGAÇÃO PLAQUETÁRIA EM GATOS AMBIENTADOS E NÃO AMBIENTADOS, COMPARANDO OS ANTICOAGULANTES CITRATO DE SÓDIO 3,2% E EDTA E DIFERENTES MÉTODOS DE CONTAGEM DE PLAQUETAS
… citrate 3.2% vacuotainer and the other one in an EDTA vacuotainer. The aclimatation was performed for one hour under the effect of a facial pheromone (Feliway®- Ceva Saúde Animal Ltda – Paulínia-SP). Both blood samples was processed and the platelets was counted in automatic and manual methods in …
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Induced Phytoextraction of Lead from Contaminated Urban Soil Through Manipulation of Rhizosphere and Plant Biogeochemical Functions in Switchgrass (Panicum virgatum)
… chelates (ethylenediamineteteraacetic acid, EDTA), and foliar-Fe supplement on lead (Pb) phytoextraction from contaminated soil by switchgrass (Panicum virgatum) was examined. Leadcontaminated (76 mg Pb kg−1) urban topsoil collected from Atlanta was placed in pots (n=32) seeded with …
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Aqueous and solid phase interactions of radionuclides with organic complexing agents
… complexing agents with different denticities (EDTA, NTA and picolinic acid as common co-contaminants), and natural sand (as simple environmental solid phase). A UV spectrophotometric and an IC method were developed to monitor the behaviour of EDTA, NTA and picolinic acid in the later …
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Microbial carbon within and above exotic copper deposits in northern Chile : implications for ore genesis and exploration
… and (4) ethylenediaminetetraacetic acid (EDTA) extraction followed by IRMS. EDTA-partial extraction favours the dissolution of minerals with divalent cations, releasing as carbon dioxide the carbon trapped within the crystal structure. All four of these analytical techniques have been used …
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The Effect of Root Canal Cleansing on the Retention of Glass Fiber-reinforced Posts
… Dentine conditioning with solutions such as EDTA or MTAD results in removal of smear layer and might improve the retention of posts to root canal dentin. Therefore, the purpose of this study was to investigate the effect of cleansing the post space with MTAD or EDTA on the bond strength of …
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Effect of Diamond Bur and Root Canal Irrigants on Retention of Fiber Posts
… Dentine conditioning with solutions such as EDTA or MTAD results in removal of smear layer and might improve the retention of posts to root canal dentin. Therefore, the purpose of this study was to investigate the effect of cleansing the post space with MTAD or EDTA on the bond strength of …
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Glycogen extraction from skeletal muscle sarcoplasmic reticulum: structural and functional implications
… results suggest that both amylase and removal of EDTA (No-EDTA) from the homogenization and storage buffers reduced the amount of glycogen associated with the SR. Both of these treatments failed to impair SR calcium (Ca2+) handling when assayed under conditions where exogenous ATP was added and …
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