A theoretical mechanistic investigation of catalyzed aldol reactions

... Mukaiyama, T.; Narasaka, K.; Banno, K Chem Lett 1973, 1011 (7) (a) Oisaki, K.; Suto, Y.; Kanai, M.; Shibasaki, M J Am Chem Soc 2003, 125, 5644 (b) Wadamoto, M.; Ozasa, N.; Yanagisawa, A. ; Yamamoto, ... study of the silver(I)-catalysed Mukaiyama aldol reactions, Ohkouchi et al9 have shown that their catalyst coordinates to the nucleophile instead With the vast range of catalysts and r...

Ngày tải lên: 15/09/2015, 17:09

... PTDH, and an Arg replaced Ala176 to stabilize the additional negative charge of NADP PTDH-E17 5A A1 76R displayed relaxed cofactor specicity with a Km for NADP that is decreased over 700-fold compared ... Table Kinetic comparison of WT and Mutant PTDH and FDH with either NADP or NAD Enzyme (cofactor) KM NADP (lM) kcat (min)1) kcat KM, WT PTDH (NAD )a WT PTDH (NADP )a E17 5...

Ngày tải lên: 23/03/2014, 15:20

... vascular leakage during severe disease (Avirutnan et al, 2007) Anti-NS1 antibodies have also been demonstrated to enhance the activation of complement, and the increased plasma levels of MAC and ... dephosphorylation of kinases in the activating Fc R signaling cascade 47 Figure 1-7 The family of Fc Rs Fc Rs vary according to their affinity for the Fc protion of the antibod...

Ngày tải lên: 09/09/2015, 08:17

... plain film X-rays alone; AP/lateral plain film X-rays plus paired 45° AP-obliques; CT imaging) with regards to the accuracy of lesion identification Accuracy was calculated as a percentage, through ... superior to AP/Lateral X-rays (P = 0.02) and paired oblique X-rays (P = 0.01) Again, there was no advantage with the addition of paired oblique X-rays compared with standard AP/lateral...

Ngày tải lên: 20/06/2014, 01:20

... starting from immediate layer adjacent to it, alternate between being an irregular hexagonal (IH, the six sides and internal angles are not all equal) layer, and a regular hexagonal (RH) layer ... function More sophisticated models and laboratory studies are needed The electrophysiology of islet and β-cell oscillation, and evaluation of islet architectural organization...

Ngày tải lên: 13/08/2014, 16:21

... of Lewis acid catalyst BF3 on the mechanism of hetero Diels- Alder reactions Calculations show that effects of catalyst are complicated  effects are different for different pathways Chapter Theoretical ... zero, it is called anti bond orbital (σAB*) The normalized and orthogonalized hA is called natural hybrid orbital (NHO, hA’) σAB can always be written as caha’ + cbhb’ and σ...

Ngày tải lên: 26/09/2015, 10:44

... rib arrangements on heat transfer and flow behavior in a rectangular rib roughened passage” International Journal of Heat and mass transfer; 123: 675-681, 2001 [6] Lau S.C., McMillin R.D and Han ... studies of augmented heat transfer and friction in asymmetrically heated rectangular ducts with ribs on the heated wall in transverse, inclined, V-continu...

Ngày tải lên: 05/09/2013, 16:10

... Mechanical Engineering, Ferdowsi University of Mashhad, IRAN His main research interests are internal combustion engines and power plant analysis based on thermodynamic laws E-mail address: m_ghazikhani@Ferdowsi.um.ac.ir ... m_ghazikhani@Ferdowsi.um.ac.ir M Ahmadzadehtalatapeh is Master of Science in Mechanical Engineering He is lecturer in Chabahar Maritime University, IRAN His m...

Ngày tải lên: 05/09/2013, 16:11

... supply large volume of biodiesel, in fact, nearly half a dozen states of India have reserve a total of 1.72 million hectares of land for Jatropha cultivation and small quantities of Jatropha biodiesel ... some unreacted remainder of methanol and catalyst which if not removed can react and damage storing and fuel carrying parts During washing ester present react...

Ngày tải lên: 05/09/2013, 16:11

Ngày tải lên: 18/02/2014, 11:20

... residue at position 39 and an equatorial 4-OH was called /4e, and between any residue at position 451 and an equatorial 4-OH was called g4e Interactions involving these same residues and an axial ... position E451, the primer sequence was 5¢-GGAGTCTAATGGACAACTTTNNNTGGATGGA GGGTTATATTGAGCG-3¢, with GAC, CAA and TCA as mutated codons for E451D, E451Q and E451S, respectively DNA se...

Ngày tải lên: 16/03/2014, 18:20

... calculations Linking the Bank Lending Channel and the Disequilibrium Loan Market Analysis We assumed in our theoretical model of the bank lending channel that the loan interest rate is perfectly ... by the policymaker as a good indicator of attenuation and amplication effects of the bank lending channel Our analysis indicates that the b...

Ngày tải lên: 22/03/2014, 23:20

... unit of classification is usually the protein domain Small proteins, and most of those of medium size, have a single domain and are, therefore, treated as a whole The domains in large proteins are ... database and the headers of Brookhaven Protein Databank structure files To provide easy and broad access, we have made the scop database available as a set...

Ngày tải lên: 23/03/2014, 12:20

... active area on the fault This gives us values of the average total slip of between 0.1 and cm and a stress drop of between I and 10 bar for a rise time equal to At, and a stress drop that can reach ... earthquake as empirical Green’s functions eliminates the effects of propagation through complex media, and makes it possible to separate propagation and source...

Ngày tải lên: 23/03/2014, 13:20