• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 188
  • 37
  • 22
  • 4
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • Tagged with
  • 299
  • 299
  • 77
  • 70
  • 50
  • 45
  • 35
  • 34
  • 32
  • 30
  • 28
  • 27
  • 27
  • 25
  • 16
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Macrocyclic thioether complexes of rhodium and molybdenum /

Lemke, William Donald January 1974 (has links)
No description available.
42

Potentiometric and spectrophotometric investigation of the complexes of mercury (II), copper (II), and nickel (II) with triethylenetraamine and nickel (II) with a mixture of triethylenetraamine and oxalate ions /cby Paula Catalano Dunnigan

Dunnigan, Paula Catalano January 1975 (has links)
No description available.
43

Synthesis, characterization and substituent effects in a series of substituted tetraazatetraenato metal (II) complexes /

Streeky, Jerome Anthony January 1979 (has links)
No description available.
44

Separation and speciation of biodegradable complexes using capillary zone electrophoresis

Khotseng, Lindiwe Eudora 12 1900 (has links)
Thesis (PhD)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: Separation of the metal ions Cu2+, Pb2+, Cd2+ Mn2+, Cr3+, Fe3+ and Zn2+ with poly ethylenediamine tetra-acetic acid (EDTA), ethylenediamine disuccinic acid ([S,S']- EDDS) and ethylenediamine dimalonic acid (EDDM) was performed by Capillary Electrophoresis. The electropherograms obtained by Capillary Electrophoresis were validated with a speciation model Joint Expert Speciation System (JESS). Excellent agreement was observed for the speciation diagrams for these species with the pH curves determined by capillary electrophoresis with those determined by speciation modelling using JESS. The ligands EDDS and EDDM are readily biodegradable. They have been proposed as substitute ligands for EDTA. Detection of the above species was performed using both an electrochemical and a UV detector. The obtained electropherograms were used for the determination of the detection limits of these species. The electrochemical detector has a lower detection limit for these species than the UV detector in conformity with reported literature for these detectors. / AFRIKAANSE OPSOMMING: Skeiding van die metaal ione Cu2+, Pb2+, Cd2+, Cr3+, Fe3+ en Zn2+ met behulp van etileendiamientetra-asyn suur (EDTA), etileendiamiendisuksien suur ([S,S']-EDDS) en etileendiamiendimaleen suur (EDDM) was gedoen deur kapilêre elektroferose. Die elektroferogramme, verkry deur kapilêre elektroferose was gebruik om die spesiasie model "Joint Expert Speciation System (JESS)" te valideer. Uitstekende ooreenstemming was waargeneem vir die verspreidings diagramme van hierdie spesies as 'n funksie van pH wat verkry was deur kapilêre elektroferose met die' wat vasgestel was deur die spesiasie modeleeringsproses van JESS. Die ligande EDDS en EDDM toon onmiddelike biodigradeerbaarheid. Hulle was voorgehou as alternatiewe ligande vir EDTA. Bepaling van die bogenoemde spesies was ook gedoen deur beide elektrochemiese en UV deteksie. Deur gebruik te maak van hierdie detektore was die deteksie limiete van hierdie spesies bepaal. Die elektroochemiese detektor het 'n laer deteksie limiet vir hierdie spesies in vergelyking met die UV detector. Dit stem ooreen met die literatuur vir hierdie detektore.
45

Separation and speciation of biodegradable complexes using capillary zone electrophersis

Khotseng, Lindiwe Eudora 12 1900 (has links)
Thesis (PhD)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: Separation of the metal ions Cu2+, Pb2+, Cd2+ Mn2+, Cr3+, Fe3+ and Zn2+ with poly ethylenediamine tetra-acetic acid (EDTA), ethylenediamine disuccinic acid ([S,S']- EDDS) and ethylenediamine dimalonic acid (EDDM) was performed by Capillary Electrophoresis. The electropherograms obtained by Capillary Electrophoresis were validated with a speciation model Joint Expert Speciation System (JESS). Excellent agreement was observed for the speciation diagrams for these species with the pH curves determined by capillary electrophoresis with those determined by speciation modelling using JESS. The ligands EDDS and EDDM are readily biodegradable. They have been proposed as substitute ligands for EDTA. Detection of the above species was performed using both an electrochemical and a UV detector. The obtained electropherograms were used for the determination of the detection limits of these species. The electrochemical detector has a lower detection limit for these species than the UV detector in conformity with reported literature for these detectors. / AFRIKAANSE OPSOMMING: Skeiding van die metaal ione Cu2+, Pb2+, Cd2+, Cr3+, Fe3+ en Zn2+ met behulp van etileendiamientetra-asyn suur (EDTA), etileendiamiendisuksien suur ([S,S']-EDDS) en etileendiamiendimaleen suur (EDDM) was gedoen deur kapilêre elektroferose. Die elektroferogramme, verkry deur kapilêre elektroferose was gebruik om die spesiasie model "Joint Expert Speciation System (JESS)" te valideer. Uitstekende ooreenstemming was waargeneem vir die verspreidings diagramme van hierdie spesies as 'n funksie van pH wat verkry was deur kapilêre elektroferose met die' wat vasgestel was deur die spesiasie modeleeringsproses van JESS. Die ligande EDDS en EDDM toon onmiddelike biodigradeerbaarheid. Hulle was voorgehou as alternatiewe ligande vir EDT A. Bepaling van die bogenoemde spesies was ook gedoen deur beide elektrochemiese en UV deteksie. Deur gebruik te maak van hierdie detektore was die deteksie limiete van hierdie spesies bepaal. Die elektroochemiese detektor het 'n laer deteksie limiet vir hierdie spesies in vergelyking met die UV detector. Dit stem ooreen met die literatuur vir hierdie detektore.
46

Synthesis, reactivities and electrochemistry of ruthenium and osmium oxo complexes with polypyridine ligands

梁偉豪, Leung, Wai-ho, Wilkie. January 1989 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy
47

The chemistry of para-tolylimidovanadium V trichloride: synthesis and characterization of dialkyldithiocarbamate and related derivatives and of bis(organophosphine)vanadium IV complexes

Wheeler, Dale E. January 1986 (has links)
Call number: LD2668 .T4 1986 W43 / Master of Science / Chemistry
48

Light-emitting platinum (II) and gold (I) complexes containing cyclometalated and alkynyl ligands

Lu, Wei, 陸為 January 2003 (has links)
published_or_final_version / abstract / toc / Chemistry / Doctoral / Doctor of Philosophy
49

Design, structures, spectroscopic, and photophysical properties of supramoleculsar gold(I), platinum(II), and palladium(II) complexes

曾炳堯, Tzeng, Biing-chiau. January 1998 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy
50

Substitutions of four-coordinated complexes

王輝泰, Wong, Fai-tai. January 1969 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy

Page generated in 0.0506 seconds