Sökning: "Arsenic compounds"
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18 avhandlingar innehållade orden Arsenic compounds.
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Författare :Devanita Ghosh; Joyanto Routh; Teresia Svensson; Punyasloke Bhadury; M. E. Donselaar; Linköpings universitet; []
Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Arsenic; aquifer; arsenite oxidation; aioA gene; Bengal delta plains; biogeochemical cycling biomarkers; DOC; SOC; Arsenik; akvifärer; arsenitoxiderande; aioA gene; Bengal delta plains; biogeokemiska omsättning; biomarkörer; DOC; SOC;
Sammanfattning :
An elevated level of Arsenic (As) in aquifers from India and Bangladesh affecting the human health has been widely reported since the late 1980s. The thesis aim is to investigate the present status of As contamination and biogeochemical cycling with direct role of diverse indigenous bacterial communities in As cycling in the Bengal Delta Plain (BDP) aquifers in Nadia district, West Bengal (India). LÄS MER
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Författare :Huiqi Li; Avdelningen för arbets- och miljömedicin; []
Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; exposure; telomere; methylation; chromosomal aberration; cancer risk; rubber fumes; arsenic; welding fumes; diesel exhaust; particulate matter;
Sammanfattning :
Telomeres are tandem repeats of TTAGGG at the end of eukaryotic chromosomes. Telomeres play a key role in chromosome stability and regulation of the cellular lifespan. Telomeres are shortened during cell division, and probably, by not yet well characterised factors in the environment. LÄS MER
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Författare :Daniel Morales Salazar; Andreas Orthaber; Jose Goicoechea; Uppsala universitet; []
Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; materials; physical chemistry; arsaalkenes; phosphaalkenes; DBU; fluorene; photochemistry; arsenic; phosphorus; carbon; hydrogen; sulfur; gold; copper; organic materials; organic electronics; molecular electronics; polymers; transition metal complexes; molecular materials; small molecule; hydrogen bonding; electrochemistry; cyclic voltammetry; chronoamperometry; electropolymerization; artificial intelligence; potentiodynamic; modularity; functionality; XPS; DFT; π-conjugation effects; 2D-NMR; disilenes; siliconoids; group motifs; functional group; emergence; reactivity; reactive systems; organometallic complexes; π-delocalization; low-coordinate; main group chemistry; heavy p-block elements; pnictogens; copper I complex; gold I complex; photosensitizer; XRD; spectroelectrochemistry; electrochromism; smart materials; synthesis; phosphaalkene ligands; imine ligands; hysteresis-like criteria; representative settings; optimal criteria; transient covalence; interactive image; conformer; isomer; ligand scrambling; nanomaterials; stimuli-responsive; optical properties; ligand design; molecular design; X-ray crystallography; emission; self-assembly; As=C; Si=Si; P=C; multiple bond; equilibrium; heteroalkenes; alkenes; reversibility; Raman; ATR-FTIR; ERDA; Kemi; Chemistry;
Sammanfattning :
This work focuses on the design, synthesis, characterization, and application projections of low-coordinated heavy pnictogen-containing (described by the generic letter E, hence E=C) phosphaalkenes (P=C) and arsaalkenes (As=C), with emphasis on the E=C group motifs. The work aims to understand their functional and modular character, reactivity, and potential applications by stabilizing, isolating, and characterizing these species in low-coordination environments. LÄS MER
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Författare :Muhammad Anwar Shameem; Andreas Orthaber; Roland Christian Fischer; Uppsala universitet; []
Nyckelord :Pnictogen; phosphorus; arsenic; phosphaalkenes; arsaalkenes; phospholes; arsoles; alkynes; π-conjugation; PAHs; Fullerene-C60; sumanene; truxene; organic electronics;
Sammanfattning :
This thesis work is based on the development of novel organopnictogen compounds and the exploration of their potential applications in organic electronics. In particular, incorporation of phosphorus and arsenic into π-conjugated systems is known to modify the optoelectronic properties. LÄS MER
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Författare :Josefin Åkerstedt; Lars Kloo; Mats Johnsson; KTH; []
Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; metal cluster; Zintl ion; metal-organic sandwich complex; ionic liquid; X-ray diffraction; spectroscopy; crystal structure; Inorganic Chemistry;
Sammanfattning :
With the aim of finding alternative reaction media for the synthesis of subvalent main group and transition metal cluster compounds, traditionally made through solid state reactions or in superacidic media, different alternative reaction media have been explored in this work. Room-temperature ionic liquids are amongst the more unconventional reaction media used. LÄS MER
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