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 30091 for “"¹⁵N"”.
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S=N versus S+-N-
The main aim of this thesis was to characterise structurally four sulfur-nitrogen compounds in terms of their experimental electron density distribution: Sulfurdiimide S(NtBu)2 (I), sulfurtriimide S(NtBu)3 (II), methyl(diimido)sulfinic acid H(NtBu)2SMe (III) and methylene-bis(triimido)sulfonic acid …
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N=1=NPK=KIMCHI=N
N=1=NPK=KIMCHI=N is a mobile, expandable living unit which consists of a urinal, urine processing system, hydroponic napa cabbage garden, seedling growing area, customized bed, and kitchen table. I tested my urine, modified my diet to produce a urine ideal for growing napa cabbage, grew napa …
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Synthesis, characterisation and coordination chemistry of novel N-alkyl- and N,N-dialkyl-N'-acylthioureas
A series of N-alkyl- and N,N-dialkyl-N'-acylthioureas are synthesised and characterised. The crystal structure of N-butyl-N'-benzoylthiourea indicates that an intramolecular hydrogen bond locks the potentially bidentate chelate moiety into a planar six-membered ring with an overall rod-like …
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Biotransformation von N-Alkyl- und N,N-Dialkylarylaminen durch Bacillus megaterium
In der vorliegenden Arbeit wurden Studien zur bakteriellen Biotransformation von N Alkyl- sowie N,N Dialkylarylaminen mit dem Ziel der arylischen Hydroxy-lierung und N-Dealkylierung durchgeführt. Bodenproben wurden einem Screening-Verfahren unterworfen, um selektiv nach Mikroorganismen zu suchen, …
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'n Ondersoek na die moontlike rekenarisering van 'n projekbestuursafdeling binne 'n groot vervaardigingsonderneming
This thesis covers an investigation into the possibility of computerizing a Project Management Department within a large Manufacturing Organization. The purpose of the investigation is to determine the influence on the productivity between the existing filing/retrieval system and the proposed …
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Synthesis characterisation and chemistry of N-alkyl-and N,N-dialkyl-N'-acylthiourea platinum(II) and palladium(II) complexes
N-(n-butyl)-N-methyl-N'-benzoylthiourea and N-(n-butyl)-N-methyl-N'-naphthoylthiourea (HL) have been synthesised and characterised. These ligands react with K2PtCl4 to yield neutral square planar cis- [Pt(L-O,S)2] complexes. These complexes exist as mixture of EE, EZ and ZZ isomers.
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Synthesis of N-alkyl-and N,N-dialkyl-N'-acyl- and N'-aroythioureas, and aspects of their co-ordination chemistry with Pt(II)and Pd(II)
The synthesis of simple, and also bipodal N-substituted N'-acyl- and N'-aroylthiourea ligands has been investigated, along with aspects of their co-ordination chemistry to Pt(II) and Pd(II). The ligands are commonly produced by reacting a secondary or primary amine with an acyl or aroyl …
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On the Distribution Function of N/phi(n)
Let (phi)(n) denote Euler's function and let D(x) denote the distribution function of
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Alternativní příprava 1-(difenylfosfino)-1'-(N,N-dimethylaminomethyl)ferrocenu
Byl navržen a optimalizován nový, přímočařejší a efektivnější postup přípravy 1- (difenylfosfino)-1'-(N,N-dimethylaminomethyl)ferrocenu, využívající 1-brom-1'-(difenyl- fosfino)ferrocenu jako výchozí látku a Eschenmoserovu sůl jako aminomethylační činidlo. Čistota tímto způsobem připraveného …
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Toxicology and pharmacology of N¹-acetylspermidine and N⁸-acetylspermidine
<p>The polyamines are a group of natural compounds which have been found in almost all living tissues. N<sup>1</sup>- and N<sup>8</sup>- acetylspermidine have been known for a considerable time as normal constituents in human urine, but their physiological role is unknown. Recent studies have …
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N-Bakry Emery Ricci Curvature & N-Quasi Einstein Metrics
<p>We begin the thesis by giving an intuitive introduction to calculus on mani- folds for the non-mathematician. We then give a semi-intuitive description on Ricci curvature for the non-geometer. We give a description of the N-Bakry- Émery Ricci curvature and the N-quasi Einstein metric. The main …
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N-bakry Emery Ricci Curvature & N-quasi Einstein Metrics
<p>We begin the thesis by giving an intuitive introduction to calculus on mani- folds for the non-mathematician. We then give a semi-intuitive description on Ricci curvature for the non-geometer. We give a description of the N-Bakry- Émery Ricci curvature and the N-quasi Einstein metric. The main …
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Novel Neutron Detector for n-n Scattering Length Measurement
The neutron-neutron (n-n) scattering length is a fundamental parameter in nuclear physics; however, measurements are plagued with large uncertainties caused by neutron detector cross talk. Many experimentalists also rely upon computer code to calibrate their neutron detectors. Experiments give one …
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Potential platinum DNA-Metallointercalators : synthesis, characterisation and 1H NMR studies on [Pt(diimine)(N,N-di(n-butyl)-N'-acylthioureato)]+PF6 complexes in solution
A series of mixed-ligand [Pt(diimine)(N,N-di(n-butyl)-N'-acylthioureato)fPF6- complexes has been synthesised and fully characterised (where diimine is: 1,10 phenanthroline; 4,7-diphenyl-1,10- phenanthroline; 2,2'-bipyridyl; 4,4'-dimethyl-2,2'-bipyridyl and 4,4'-di-tert-butyl-2,2'-bipyridyl and acyl …
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