A theoretical study of hetero diels alder reactions

... 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

... Born-Oppenheimer Approximation, The One-Electron Approximation, The Linear Combination of Atomic Orbital (LCAO) Approximation 2.2.1 The Born-Oppenheimer Approximation2 One of the most important approximations ... disubstituted ethanes 167 6.3.2 General trend of CH · X (X= O, N, S and P) intramolecular interactions 174 6.3 Energy of intramolecular CH · X (X= O, N, S and...

Ngày tải lên: 15/09/2015, 21:05

... detectable in the cell wall-free mutant These findings stand in contrast to a subsequent analysis of singlegene knockout data indicating that E coli can only survive if at least L1-P-EtAmine and a lipid ... synthesis of unsaturated and saturated fatty acids, phospholipids (including cardiolipin), and lipid A It is important to study the metabolism of the glucosa...

Ngày tải lên: 22/03/2014, 21:20

... difficult to assess in vivo, is involved in these pathways Since adenine is a substrate of ADPRT, the elevation of ATP in the absence of adenosine kinase shows that adenine must be released in the process ... Thus, there 5281 A theoretical study using elementary flux modes S Schuster and D Kenanov Table Elementary modes producing ATP from...

Ngày tải lên: 30/03/2014, 20:20

... measured the MEG of epileptic patients and normal subjects in order to compare the theoretical neural net model [10-12] with real data Analyzing the MEG data by x2-fitting revealed that the MEG recordings ... E, Argyrakis P, Anninos PA: Neural nets with markers and Gauss-distributed connectivity Connect Sci 1993, 5:77-94 Fournou E, Argyrakis P, Kargas B, An...

Ngày tải lên: 13/08/2014, 23:20

... CHIRAL BICYCLIC GUANIDINE CATALYZED DIELS ALDER REACTIONS OF ANTHRONES SHEN JUAN 2008 CHIRAL BICYCLIC GUANIDINE CATALYZED DIELS ALDER REACTIONS OF ANTHRONES SHEN JUAN (BSc., ... Bicyclic Guanidines Catalyzed Reactions of Anthrones 2.1 Brønsted-Base Catalyzed Diels- Alder Reaction -42 2.2 Chiral Bicyclic Guanidine Catalyzed Diels Alder...

Ngày tải lên: 12/09/2015, 10:17

... increase the competitive advantage of the fast food restaurant The basic attribute of a fast food restaurant are also important for a fast food restaurant to excel because the strength of a brand ... qualities, brand loyalty, brand awareness, brand association and other propriety assets According to him, Brand loyalty has to with the level of...

Ngày tải lên: 24/09/2012, 17:19

... – particularly the consultant videoed (author AV) Data analysis methodology Our analysis aims to answer the following question: How does interaction during clinical ward rounds vary when an EPR ... is used in place of a paper record? Given the complex nature of interaction of multidisciplinary communication in an ICU, we have chosen to triangulate three types of qualitativ...

Ngày tải lên: 25/10/2012, 10:31

... medications and equipment on board In Germany, the regulations of the National Federal Aviation Agency (Luftfahrt-Bundesamt, Braunschweig, Germany) and the European Joint Aviation Authorities (JAA; ... Germany) regulate aviation on the national and continental level They regulate by law the contents of an on- board dispensary and the MFK However, in Europe, the regulati...

Ngày tải lên: 25/10/2012, 10:31

... comparable study of visually-induced motion sickness We were especially interested in replicating and extending research by Drummond and Granston that showed that visually-induced motion sickness in ... herein extends this line of research by combining a visual motion sickness- inducing stimulus with pain and pre-treatment with rizatriptan In this study, r...

Ngày tải lên: 26/10/2012, 09:57

... prospective randomized comparison of and 12 cycles of Cyclophosphamide, Adriamycin and Cisplatin in advanced epithelial ovarian cancer: a Danish ovarian study Group Trial (DACOVA) Gynecol Oncol ... arm completed cycles of first-line chemotherapy only, while an additional cycles of polychemotherapy with FU followed by Cisplatin were proposed for the 61 patients in the Cis...

Ngày tải lên: 03/11/2012, 09:57

Ngày tải lên: 07/11/2012, 14:17

... LINGUISTIC FEATURES OF THE INTERNATIONAL CONVENTION ON HUMAN RIGHTS IN COMPARISON WITH THOSE OF THE INTERNATIONAL DECLARATION 4.1 Definition of an International Convention 4 .2 20 Purposes and typical ... Preamble of the Convention and their realization 4.3.1 21 23 The Body 23 4.3 .2. 1 The Body of the Convention and its realization 23 4.3 .2. 2 Remarks 2...

Ngày tải lên: 07/11/2012, 14:17

... differences between international Declarations and Conventions 32 in terms of discourse structures and major linguistic features International Declarations and International Conventions are legal documents, ... Convention 4 .3 A STUDY OF THE DISCOURSE STRUCTURE AND MAJOR LINGUISTIC FEATURES OF INTERNATIONAL CONVENTIONS ON HUMAN RIGH...

Ngày tải lên: 07/11/2012, 14:17

... spirit of article 29; (b) Encourage international co-operation in the production, exchange and dissemination of such information and material from a diversity of cultural, national and international ... education accessible to all on the basis of capacity by every appropriate means; (d) Make educational and vocational information and guidance available and accessib...

Ngày tải lên: 07/11/2012, 14:17