Browsing School of Pure and Applied Sciences by Issue Date
Now showing items 21-40 of 170
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Generalized relativistic dynamics in a non-inertial reference frame
(Springer-Verlag, 2010)Generalized relativistic field equations have been derived for dynamics in a non-inertial reference frame interpreted as a Finsler space where events are specified by both spacetime coordinates and corresponding velocities ... -
Modelling the volatility of exchange rates in the Kenyan market
(Academic Journals, 2010)This paper considers the application of the generalized autoregressive conditional heteroscedasticity process in the estimation of volatility in the Kenyan exchange rates. A quasi-maximum likelihood estimation procedure ... -
Effect of Mn doping on the structural and optical properties of sol-gel derived ZnO nanoparticles.
(Springer, 2011)Un-doped and Mn-doped ZnO nanoparticles were successfully synthesized in an ethanolic solution by using a sol-gel method. Material properties of the samples dependence on preparation conditions and Mn concentrations were ... -
Preparation of tervalent molybdenum complexes and a study of their reduction by zinc under low pressure of carbon monoxide
(Kenyatta University, 2011)Previously, molybdenum hexacarbonyl, MO(CO)6 has been prepared by reduction of highoxidation state molybdenum compounds such as MoCls under high pressure (60-100atm.) and temperature (20-1000C), carbonylation of metal oxide ... -
[HTML] from iucr.org (μ-Formato-κ2O: O′) bis [dicarbonyl (η5-cyclopentadienyl) iron (II)] tetrafluoridoborate.
(International Union of Crystallography, 2011)In the structure of the title compound [Fe(2)(C(5)H(5))(2)(CHO(2))(CO)(4)]BF(4), each Fe(II) atom is coordinated in a pseudo-octa-hedral three-legged piano-stool fashion. The cyclo-penta-dienyl ligand occupies three fac ... -
(μ-Ethane-1, 2-diamine-κ2N: N′) bis [dicarbonyl (η5-cyclopentadienyl) iron (II)] bis (tetrafluoridoborate)
(International Union of Crystallography, 2011)The asymmetric unit of the title compound, [Fe2(C5H5)2- (C2H8N2)(CO)4](BF4)2, contains two half-cations, each located on a center of symmetry, and two tetrafluoridoborate anions. The iron atoms adopt a three-legged ... -
Acetonitriledicarbonyl (η5-pentamethylcyclopentadienyl) iron (II) tetrafluoridoborate
(International Union of Crystallography, 2011)In the structure of the title compound, [Fe{5-C5(CH3)5}- (NCCH3)(CO)2]BF4, the arrangement of ligands around the Fe atom is in a pseudo-octahedral three-legged piano-stoolfashion in which the pentamethylcyclopentadienyl ... -
(μ-Formato-κ2O: O′) bis [dicarbonyl (η5-cyclopentadienyl) iron (II)] tetrafluoridoborate
(International Union of Crystallography, 2011)In the structure of the title compound [Fe(2)(C(5)H(5))(2)(CHO(2))(CO)(4)]BF(4), each Fe(II) atom is coordinated in a pseudo-octa-hedral three-legged piano-stool fashion. The cyclo-penta-dienyl ligand occupies three fac ... -
Prediction of the likelihood of Households Food Security in the Lake Victoria Region of Kenya
(Pakistan Journal of Statistics and Operation Research, 2011)This paper considers the modeling and prediction of households food security status using a sample of households in the Lake Victoria region of Kenya. A priori expected food security factors and their measurements are ... -
Induction of Complete Courtship Ritual in Amblyomma Cajennense Using 2, 6-Dichlorophenol at Female-Equivalent Quantities
(2011)In order to clarify the role of 2,6-dichlorophenol (2,6-DCP) in the courtship of Amblyomma cajennense, sexually mature males that had previously fed on rabbits were tested in bioassays. The males were released onto dummies ... -
Establishment of an efficient screening system to isolate rice mutants deficient in green leaf volatile formation
(Taylor & Francis, 2011)Green leaf volatiles (GLVs) are involved in defense responses of plants against wide range of stresses. In order to investigate the ecological significances of GLVs in rice plants, we started screening of rice mutants that ... -
Synthesis, characterization and structural elucidation of water-soluble 1-aminoalkane and α,ω-diaminoalkane complexes of the pentamethylcyclopentadienyliron dicarbonyl cation, [Cp∗(CO)2Fe]+
(Elsevier, 2012)A series of water-soluble alkylaminopentamethylcyclopentadienyliron dicarbonyl complexes, [Cp ∗ (CO) 2 Fe{NH 2 (CH 2 ) n CH 3 }]BF 4 (n=2–6; Cp ∗ =η 5 -C 5 Me 5 ) and the diaminopropane bridged complex, [{Cp ∗ (CO) 2 Fe} ... -
Syntheses, structural elucidation and reactions of allylamino compounds of the type, [η5-C5R5(CO)2Fe(NH2CH2CHCH2)]BF4
(Pergamon, 2012)The reaction of 3-aminoprop-1-ene (allylamine) with the etherate complexes [(n5-C5R5)(CO)2Fe(L)]+(R = H; L = Et2O; R = CH3; L = THF) have been investigated and found to give air stable allylamino com-plexes [(n5-C5R5)(CO ... -
Synthesis, characterization and structural elucidation of water-soluble 1-aminoalkane and α, ω-diaminoalkane complexes of the pentamethylcyclopentadienyliron dicarbonyl cation,[Cp∗(CO) 2 Fe]+
(Elsevier, 2012)A series of water-soluble alkylaminopentamethylcyclopentadienyliron dicarbonyl complexes, [Cp∗(CO)2Fe{NH2(CH2)nCH3}]BF4 (n = 2–6; Cp∗ = η5-C5Me5) and the diaminopropane bridged complex, [{Cp∗(CO)2Fe}2{μ-NH2(CH2)3NH2}](BF4)2 ... -
Dicarbonyl (η5-cyclopentadienyl)(hexamethylenetetramine-κN1) iron (II) tetrafluoridoborate
(International Union of Crystallography, 2012)In the structure of the title compound, [Fe(C5H5)(C6H12N4)-(CO)2]BF4, the arrangement around the FeIIatom corresponds to that of a three-legged piano stool. The cyclopenta-dienyl ligand occupies three coordination sites ... -
Regioselective reactions of electrophilic iron dicarbonyl cations, [(η5-C5R5)(CO)2Fe]+ (R = H, CH3) with heterofunctional amine ligands
(Elsevier, 2012)The reactions of the ether salts [(η5-C5R5)(CO)2Fe(E)]BF4, (R = H, E = Et2O; R = CH3, E = THF) with various ligands possessing two different coordination sites have been investigated. It was established that [(Cp(CO)2Fe(OEt2)]BF4 ... -
Dicarbonyl (hexamethylene-1, 3, 5, 7-tetramine-κN1)(η5-pentamethylcyclopentadienyl) iron (II) tetrafluoridoborate
(International Union of Crystallography, 2012)In the title compound, [Fe(C10H15)(C6H12N4)(CO)2]BF4, the arrangement around the FeIIatom corresponds to a three-legged piano stool. The pentamethylcyclopentadienyl (Cp*) ligand occupies three coordination ... -
New Records of Lichen-forming Fungi from Kenya
(Journal of East African Natural History, 2012)