methodologies for the design of organic synthesis the synthesis tree
Development of new methodologies for the synthesis of enantiomerically enriched compounds
... DEVELOPMENT OF NEW METHODOLOGIES FOR THE SYNTHESIS OF ENANTIOMERICALLY ENRICHED COMPOUNDS LEE CHENG HSIA ANGELINE (B.ApplSc (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... alcohols, there are no reported illustrations for the synthesis of the cis-linear regioisomer Herein, an effective and unusual approach towards the synthesis of enantiomerically cis-linear homoallylic ... published their innovation on the Lewis acid mediated reaction of crotyltins with aldehydes that produces the syn-homoallylic alcohols regardless of the geometry of the double bond of the allylic...
- 223
- 272
- 0
Software Development Methodologies for the Database World
... all-too-common design for modeling inheritance in the database is to create a single table with all of the columns for the supertype in addition to all of the columns for each subtype, the latter ... where the child entity points to its parent Rather than the bookstore having the books, the relationship between the entities is expressed the other way around, where the books maintain a foreign ... necessary in order to avoid the possibility of data quality problems The database is the holder of the data, and as such should act as the final arbiter of the question of what data does or does...
- 22
- 347
- 0
Efficient algorithms for the gene tree species tree reconciliation problem
... consist of two steps The first step is to compress the subtree of the images of its children for each non-binary internal node in the gene tree These compressed subtrees provide local information for ... C The child-image subtree of g D The compressed childimage subtree I(g) E The child-image subtree of g5 F The compressed child-image subtree I(g5 ) The empty circles represent the nodes of the ... denoted by root(T) The nodes of degree one are called the leaves of the tree, while other nodes are called the internal nodes of the tree We use Vlf (T) and Vit (T) to denote the sets of leaves and...
- 124
- 250
- 0
A new hybrid treatment system of bioreactors and electrocoagulation for superior removal of organic and nutrient pollutants from municipal wastewater
... around the axis of the agitator at the center of the reactor (Fig 1) The packing ratio of the fibrous was 60 ± 5% based on the volume of the reactor for the attached growth biomass The picture of ... This is caused by the precipitation of ions or the formation of insoluble hydroxides, or sludge layers on the surface of the electrodes These layers insulate the surface of the electrodes, consequently ... and 4, respectively These results showed the influence of the internal recirculation flow on the phosphorus removal performance of the system, and in particular, the effect of dissolved oxygen...
- 11
- 565
- 0
methods of organic synthesis fourth edition
... centres The ease of the reaction depends on a number of factors, including the size of the ring being formed, the geometry of the enolate and Michael acceptor and the endo or exo nature of the ring ... account of the many advances in the subject since the third edition was published As in previous editions, the text begins with descriptions of some of the most important methods for the formation of ... Dr Carruthers The majority of the text was written at the University of Exeter before my move to the University of Sheffield and I would like to acknowledge the encouragement and help of the staff...
- 507
- 713
- 0
design, synthesis, and biological evaluation of new anti-cancer nitrogen-containing combretastatins and novel cysteine protease inhibitors for the treatment of chagas
... analogues 115 4.15 Methology suitable for the radiosynthesis of the E isomer of CA-1 121 4.16 Radiosynthesis of the E isomer of CA-1 123 4.17 Scale-up synthesis of OXi8007 124 4.18 Proposed nitrogen ... and Discussion 86 Synthesis of Nitrogen-Based Combretastatin A-4 86 Synthesis of Nitrogen-Based Combretastatin A-1 100 Synthesis of a Combretastatin A-1 Analogue 112 Synthesis of Nitrogen-Based ... General Section 38 Synthesis of Nitrogen-Based Combretastatin A-4 39 Synthesis of Nitrogen-Based Combretastatin A-1 49 Synthesis of a Combretastatin A-1 Analogue 62 Synthesis of Nitrogen-Based...
- 516
- 254
- 0
The Art of 21 Synthesis Organic
... point of view, but also in that the total synthesis of each molecule reflects the limits of the power of the art and science of organic synthesis at the time of the accomplishment One of the most ... understand the way of thinking of the pre-World War II chemists as opposed to those who followed them The rather straightforward synthesis of equilenin is representative of the total syntheses of pre-World ... symbolizes the fall of this class of natural products in the face of the newly acquired power of organic synthesis Additionally, it provides further illustration of the classical strategy for the setting...
- 79
- 619
- 7
NEWPATHS FOR THE INTRODUCTION OF ORGANIC ESTER MOIETIES
... the increased rate of hydrolysis both of the anhydride and also of the ester moieties Table 5.13 Influence of the amount of TBAF trihydrate on the efficiency of the acetylation of sisal cellulose ... 4-pyrrolidinopyridine usable for the synthesis of aliphatic cellulose esters [223] Among the advantages of the method are the high reactivity of the intermediately formed mixed anhydride with ... signals for the carbons of the modified AGU (103.2 to 60.1 ppm), resonances assigned to the carbon atoms of the carbonyl group of the ester function at 165.8 ppm, resonances of the crown ether moiety...
- 64
- 414
- 0
Tài liệu Investigation of Organic Chemicals Potentially Responsible for Mortality and Intersex in Fish of the North Fork of the Shenandoah River, Virginia, during Spring of 2007 ppt
... Laboratory Friends of the North Fork of the Shenandoah River Prepared in cooperation with the Friends of the North Fork of the Shenandoah River Open-File Report 2008–1093 U.S Department of the Interior ... location of the two sampling sites on the North Fork of the Shenandoah River, Virginia Investigation of Organic Chemicals Potentially Responsible for Mortality and Intersex in Fish of the North Fork ... of anthropogenic organic chemicals (AOCs) into the basin may be a factor The U.S Geological Survey in cooperation with the Friends of the North Fork of the Shenandoah River (FNFSR), a non-profit...
- 24
- 865
- 0
Tài liệu Báo cáo khoa học: Interruption of triacylglycerol synthesis in the endoplasmic reticulum is the initiating event for saturated fatty acid-induced lipotoxicity in liver cells pdf
... inhibition of ER stress When the available acyl-CoAs are in excess, they are channeled towards TAG synthesis The main findings of the present investigation were the observations that TAG synthesis ... TAG synthesis It is suggested that the creation of a pool of oversaturated lipid intermediates makes these molecules inaccessible to the enzymes of TAG synthesis, whereas a certain degree of unsaturation ... periods Interestingly, the interruption of TAG synthesis preceded the appearance of toxic effects, supporting the notion that it constitutes the initiating event in the process of lipotoxicity Stearate...
- 12
- 721
- 0
Tài liệu Novel Design of an Integrated Pulp Mill Biorefinery for the Production of Biofuels for Transportation pot
... From the calculations derived in Appendix A, the energy demand for the modified pulping section of the plant is 56 MW of electricity and 267 tonnes per day of steam The demand for the steam in the ... intermediate The first part of the reaction from synthesis gas to methanol is quite exothermal and it is limited by equilibrium at a fairly low temperature Therefore, the first part of the reaction ... formation The following formula describes the main reaction that drives the formation of Na2CO3: Na2 S + CO2 + H 2O → Na2CO3 + H S For the sake of simplicity, it is assumed that all of the Na2SO4...
- 105
- 518
- 0
Reference Document on Best Available Techniques for the Manufacture of Organic Fine Chemicals pot
... account the specific characteristics of the manufacture of Organic Fine Chemicals Using the results of the BREF on CWW as a source of information, the BREF on OFC provides a further assessment of ... in them”, and to publish the results of the exchange The purpose of the information exchange is given in recital 25 of the Directive, which states that the development and exchange of information ... (much related to the process design) and the “Management and treatment of waste streams” The former includes strategies for the selection of the synthesis route, examples of alternative processes,...
- 456
- 3,200
- 0
TECHNIQUES FOR THE ANALYSIS OF ORGANIC CHEMECALS BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY (ICP-MS) pptx
... cleaners In the case of non water-soluble organic solvents, oxygen cannot be derived from the water solvent and so another source of oxygen is required For this second group of organic solvents, the ... used, rather than pure oxygen, avoiding the use of highly flammable or explosive gases in the laboratory The oxygen is added either in the spray chamber or using a T-connector before the torch ... suffer from the formation of new “cluster” species observed with the use of more reactive gases such as ammonia The performance of CRC based ICP-MS instruments cannot, however, match the detection...
- 6
- 610
- 0
Báo cáo khoa học: Investigations into the ability of an oblique a-helical template to provide the basis for design of an antimicrobial anionic amphiphilic peptide pot
... hypothesis of Tytler et al [48], it may be that insertion of the inverted wedge shape formed by the AP1 a-helix into membranes of E coli leads to the formation of nonbilayer structures and thereby ... the susceptibility of E coli to the antimicrobial action of the peptide Discussion The biological action of many pore-forming and lytic peptides involves membrane destabilization by the use of ... membranes, but, in the presence of the peptide, they are positive These results conrm that E coli membranes are thermodynamically less stable in the presence of AP1, further supporting the suggestion...
- 12
- 688
- 0
Báo cáo khoa học: Mycobacterium tuberculosis possesses a functional enzyme for the synthesis of vitamin C, L-gulono-1,4-lactone dehydrogenase doc
... l-gulono-1,4-lactone dehydrogenase of M tuberculosis is a specific enzyme for the biosynthesis of L-AA As far as we know, this is the first report of a specific biosynthetic enzyme for vitamin C in bacteria ... mutants of the gene could be obtained [40] The gene is well conserved within the M tuberculosis complex, except for the M bovis BCG Pasteur (1173P2) strain, which lost the gene due to the deletion of ... (ALO1), which catalyzes the last step in the biosynthesis of erythroascorbic acid in yeasts, resulted in attenuated virulence of the Candida albicans mutant [42] If synthesized by the Rv1771 l-gulono1,4-lactone...
- 11
- 571
- 0
Báo cáo khoa học: "THE DESIGN OF THE KERNEL ARCHITECTURE FOR THE EUROTRA* SOFTWARE" pptx
... V Unfortunately, we know of no language as suitable for the description of data as FP for the description of control The reason is that at this moment, we are insufficiently confident of the ... r whom the tools are written For the remainder of this use the notation x:y-~ section we s h a l l z with the informal meaning of "application of x to y yields result z", or "execution of x with ... 1982) The augmented interpreter then constitutes the MMU referred to above The data definition for the current experiment presents the user with a database consisting of an ordered collection of trees,...
- 10
- 557
- 0
The bioliq® bioslurry gasification process for the production of biosynfuels, organic chemicals, and energy pdf
... with thermoneutrality in the range of about 20% char yield Together with some thermal insulation losses, a consumption of ca 10% of the bioenergy is therefore expected for FP in practice The pyrolysis ... in 1996 for the further development of their hazardous waste conversion process [34] The photo in Figure 22 shows the top and bottom sections of the pilot gasifier The KIT has rented the pilot ... not equipped for tests of the syngas cleaning and synthesis steps of the bioliq process A total of 40 t of different bioslurries have been prepared by mixing 20 to 36 wt.% of either (1) milled...
- 44
- 1,510
- 0
Báo cáo khoa học: "A Formula Finder for the Automatic Synthesis of Translation Algorithms" docx
... only once by the process of Fig 3; thereafter they can be used for the derivation of any number of basic algorithms The synthesis of each algorithm requires a separate iteration of the process ... that the speed of light changes with time (footnote 6) It is therefore desirable to introduce a further increase in the precision of measurement of the speed of light For the purpose of simplifying ... in the canonical form of a working formula only vacuously; they can be readily eliminated in the course of reducing the formula to a more minimal normal form.17,18,19,20 For example, the formula...
- 14
- 432
- 0
Casual Game Design: Designing Play for the Gamer in ALL of Us
... But in any of these cases, the game designer needs to be there to help define the mechanic at the core of the game The rest of the game, from the story to the art, should grow from the core mechanic ... such information or methods they should be mindful of their own safety and the safety of others, including parties for whom they have a professional responsibility To the fullest extent of the law, ... the game and the probabilities of different moves and actions The Responsibilities of the Game Designer On a high level, the game designer is responsible for the concept and vision of the game But...
- 253
- 1,267
- 0
Tìm thêm: khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo gắn với các giáo trình cụ thể điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc các đặc tính của động cơ điện không đồng bộ đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 sự cần thiết phải đầu tư xây dựng nhà máy phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25