alkenes alkynes and aromatic compounds
Chemistry of C-C π-bonds Lectures 1-4: Alkenes, Alkynes and Conjugation doc
... of C-C π-Bonds - - Alkene and Alkyne chemistry I Alkene chemistry Structures and influence of orbitals on reactivity: How alkenes react and why? Typical reactions of alkenes: Nucleophilic reactions ... Effects of π-bond on structure and reactivity Structures of conjugated alkenes and alkynes MO approach to conjugated systems: the allylic cation, allylic radical and butadiene Allylic bromination ... Wothers and Warren, OUP, 2000 Comments, questions and queries welcome The Chemistry of C-C π-Bonds - - The most important feature of alkenes is the π bond Alkenes possess !-bonds and "-bonds...
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Soluble and stable near infrared dyes based on polycyclic aromatic compounds
... Photophysical and electrochemical properties of 61 compounds 3-1 and 3-2 Table 4.1 Summary of photophysical and electrochemical properties of 87 compounds 4-1 and 4-2 Table 4.2 Summary of photophysical and ... inevitable that more and more soluble and stable NIR dyes based on polycyclic aromatic compounds will be synthesized in our group in the vii future and these newly developed compounds will play ... wavelength = 700 84 nm and 920 nm, respectively) spectra of compounds 4-1 and 4-2 Figure 4.4 Optimized structures and frontier molecular orbital profiles of 85 compounds 4-1 and 4-2 Figure 4.5 Cyclic...
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Bài soạn Chapter 24 Transition Metals and Coordination Compounds
... Approach 39 Ligand and Crystal Field Strength • the strength of the crystal field depends in large part on the ligands strong field ligands include: CN─ > NO2─ > en > NH3 weak field ligands include: ... complex and kinds of ligands crystal field splitting energy strong field splitting and weak field splitting Tro, Chemistry: A Molecular Approach 33 Splitting of d Orbital Energies due to Ligands ... McGraw Hill 19 Naming Coordination Compounds 1) List ligand names in alphabetical order name each ligand alphabetically, adding a prefix in front of each ligand to indicate the number found in...
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Tài liệu Báo cáo khoa học: Antimicrobial effects of H4-(86–100), histogranin and related compounds – possible involvement of DNA gyrase ppt
... chicken, antimicrobial histones H2A and H2B were isolated from the liver [8], and histones H1 and H2B were identified in the reproductive system [9] In humans, histone H1 and its fragments derived from ... typhimurium [10], and histones H2A and H2B were expressed on the surface of and secreted from amnion epithelial cells [11] A recent report indicated that activated human neutrophils contain and release ... H4-derived peptides H4(86–100) and HN possess bactericidal activity and whether such activity is modified by ATP Herein we report that H4-(86–100), HN and related compounds structure-dependently...
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Báo cáo khoa học: "A UNIFIED MANAGEMENT AND PROCESSING OF WORD-FORMS, IDIOMS AND ANALYTICAL COMPOUNDS" ppt
... all the necessary details in Tufts and Popescu (1990a) and Tufts and Popescu (1990b) Yet, we have to say that the proper morpho-lexical processings (analysis and generation), were thought to work ... facilities and the system will be equipped with configuration possibilities and standard linking interfaces for three main types of applications: advanced text-editing, language-learning and machine ... this definition, the collocations, idioms and analytical compounds are syntagms A syntagm is represented in the dictionary as a pair ( ) and it is associated with the lcmma of the...
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Flavonoids and Related Compounds: Bioavailability and Function potx
... Peter-Paul Hoppe, and Lester Packer Environmental Stressors in Health and Disease, edited by Jürgen Fuchs and Lester Packer Handbook of Antioxidants: Second Edition, Revised and Expanded, edited ... Cadenas and Lester Packer Flavonoids in Health and Disease: Second Edition, Revised and Expanded, edited by Catherine A Rice-Evans and Lester Packer 10 Redox–Genome Interactions in Health and Disease, ... and Lester Packer 11 Thiamine: Catalytic Mechanisms in Normal and Disease States, edited by Frank Jordan and Mulchand S Patel 12 Phytochemicals in Health and Disease, edited by Yongping Bao and...
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Báo cáo khoa học: Delineation of the roles of FadD22, FadD26 and FadD29 in the biosynthesis of phthiocerol dimycocerosates and related compounds in Mycobacterium tuberculosis pptx
... between FadD29 and PKS15 ⁄ on the one hand, and FadD26 and the FasI system on the other hand Further investigations, including protein interaction studies and structural studies, will be necessary ... intermediates in DIM and PGL biosynthesis has not been analyzed This study was undertaken to dissect the roles of FadD22, FadD26 and FadD29 in the biosynthesis of DIMs and related compounds Biochemical ... the DIM A and DIM B produced by Mycobacterium tuberculosis and Mycobacterium bovis BCG and of the glycosylated phenolphthiocerol dimycocerosates produced by M tuberculosis (PGL-tb) and M bovis...
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Báo cáo khoa học: The Mycobacterium tuberculosis ORF Rv0654 encodes a carotenoid oxygenase mediating central and excentric cleavage of conventional and aromatic carotenoids doc
... sheath and auxiliary gas, which were set to 20 and units, respectively The source current was set to lA and the capillary voltage was 49 V Vaporizer and capillary temperatures were 225 and 175 ... b-carotene and to lutein from a-carotene, an isomer of b-carotene containing one b- and one e-ionone ring Aromatic carotenoids (e.g isorenieratene) contain /-rings (Fig 2) Fig Cleavage sites and structures ... (F); lutein (G) and 3,3¢-dihydoxyisorenieratene (H) The substrates were cleaved at the C13-C14 and the C15-C15¢ double bonds Preferred and less targeted sites are shaded in dark and light gray,...
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Cadmium and its compounds
... instruments, photographic and optical Other manufacturing industries Electricity, gas and steam Water works and supply Construction Wholesale and retail trade and restaurants and hotels Land transport Water ... is currently developing Canada-wide Standards for dioxins and furans and is aiming for virtual elimination of this family of compounds Dioxins and related compounds can be transported a long distance ... dioxin and dioxin-like compounds A TDI of - TEQ pg/kg/day was established for dioxins and dioxin-like compounds based on dioxin-induced developmental and reproductive effects in rats and monkeys...
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Báo cáo Y học: Functional analysis of the rat bile salt export pump gene promoter Regulation by bile acids, drugs and endogenous compounds potx
... indicates the ability of drugs and endogenous compounds to affect Bsep transcription, thus altering hepatic bile flow and clearance MATERIALS AND METHODS Genomic cloning and sequence analysis of the ... polyacrylamide gel and autoradiographed For supershift experiments nuclear extracts were preincubated with polyclonal antibodies against either FXRa (lane and 4), RXRa (lane and 6) or both (lane and 8) prior ... p-126) and taurochenodeoxycholic acid (135 ± 6%, p-126) exhibited only slight stimulations of the Bsep promoter, and the trihydroxylated conjugates taurocholic acid (98 ± 10%, p-126) and tauroursodeoxycholic...
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Health Risks from Dioxin and Related Compounds Evaluation of the EPA Reassessment potx
... background documents and to William Farland for his outstanding assistance David L Eaton, Chair Committee on EPA’s Exposure and Human Health Reassessment of TCDD and Related Compounds Copyright ... reassessment of the risks of dioxin and dioxin-like compounds. ” In response, the NRC appointed the Committee on EPA’s Exposure and Human Health Reassessment of TCDD and Related Compounds, which was charged, ... from Dioxin and Related Compounds: Evaluation of the EPA Reassessment http://www.nap.edu/catalog/11688.html Science and the Endangered Species Act (1995) Wetlands: Characteristics and Boundaries...
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nitration and aromatic reactivity by hoggett
... nitration References 10 Nitration and aromatic reactivity: D the nitration of biand poly-cyclic compounds i o i BiphenyIs and related compounds i o.2 Naphthalene and its derivatives 10.3 Poly cyclic ... mesitylene, o- and w-xylene and toluene ( [aromatic] > io~3 mol I-1) were of zeroth order in the concentration of aromatic The nitration of benzene ( [aromatic] = 4-8 x io~3 mol I"1) was first order, and ... of aromatic compounds have been determined.49 The values for three nitro -compounds are given in fig 2.2 The nitration of these three compounds over a wide range of acidity was also studied,38 and...
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Organic Bromine and Iodine Compounds docx
... energetics and ecology Volume is concerned with reactions and processes in the environment and deals with physical factors such as transport and adsorption, and chemical, photochemical and biochemical ... Alkanes and Related Compounds as Metabolic Inhibitors Most of the reactions of inhibitors depend on the chemical reactivity of brominated and iodinated alkanes and related compounds, and are ... chemical compounds and chemical industry produces about hundred and fifty million tons of synthetic chemicals annually We ship billions of tons of oil per year and through mining operations and other...
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elements and their compounds in the environment occurence analysis and biological relevance
... Compounds, Uses, Waste Products, and Recycling 1054 Sources and Production 1054 Important Compounds and Uses 1054 Waste Products and Recycling 1058 Distribution in the Environment, in Food, and ... Substances and Basic (Base) Cations 54 Deposition of Sea-alt Particles and Chloride Deposition 55 Deposition and Forest Ecosystems 55 Site and Stand Dependence 55 Elevation 55 Soils 55 Forest stands ... 523 Sources and Production 523 Important Compounds and Uses 524 Waste Products and Recycling 524 Distribution in the Environment, in Food and in Living Organisms 524 Rocks, Soil, and Water 524...
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Dioxin and Related Compounds ppsx
... PCBs Agricultural burning Metal smelting and refining Chemical Manufacturing • 80% decrease between 1987 and 1995 of dioxin and CDDs/CDFs to air, water and land Primary Al, Mg, Ni Mono- to tetrachlorophenols ... found in that mixture • 75 dioxin cogeners and 135 dibenzofuran congeners • In general, CDD’s and CDF’s are present in human adipose tissue and fish and bird samples at a sub - μg/kg level – Many ... Control Efforts for Land Control Efforts for Products • Superfund and RCRA Corrective Action programs for dioxin (Times Beach and Love Canal) • Hazardous Waste Identification and Disposal Rules...
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báo cáo khoa học: " Silver nanoparticles are broad-spectrum bactericidal and virucidal compounds" potx
... 0.44 mg/mL Cell-free and cell-associated HIV-1 were pretreated at different concentrations of AgNPs, and were centrifuged and washed to separate the virus from the AgNPs and then infect the indicator ... NO secretion, increased TNF-a protein and gene levels, and increased the gene expression of matrix metalloproteinases, such as MMP-3, MMP-11, and MMP-19 Kim and colleagues demonstrated cytotoxicity ... nanoparticle is important, but the shape and morphology are important as well [32] Recent advances in Nanotechnology help in modulation of size and shape of nanoparticles and provide different ways of utilizing...
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Báo cáo khoa học: "Seleno-enzymes and seleno-compounds: the two faces of selenium Xavier Forceville" ppt
... Selenoprotein P and selenium compounds, especially sodium selenite, should therefore be further examined for their potential interests in the diagnosis and treatment of septic shock and related syndromes ... Reference Intakes for Vitamin C, Vitamin E, Selenium and carotenoids Edited by Panel on Dietary Antioxidants and Related Compounds, Interpretation and Uses of Dietary Reference Intakes, Institute ... selenocompounds are known to be more or less pro-oxidant compounds as selenium belongs to the same column of the periodic table as oxygen [13,15,16] Acute selenium intoxication leading to shock and...
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Chemical components and aromatic profiles of citrus and coffee in asia
... both the volatile compounds and aromatic profiles of pomelo blossoms, peels and juices using different analytical techniques • To characterize and correlate the volatile and aromatic profiles ... origins and aromatic profile It is believed that these findings provide substantial information on less common citrus varieties and Arabica coffee based on their chemical compositions and aromatic ... volatile compounds and their relative GC 38-39 peak area of Malaysian pomelo (Citrus grandis (L.) Osbeck, pink and white type) blossoms through HS-SPME analysis 2.2 Identifications of the volatile compounds...
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The intramolecular interactions in some aromatic compounds
... useful tool in analysis and study of the mechanisms of unimolecular reactions Moreover, UPS has helped in understanding of bonding and interactions of atoms and molecules, and is an important technique ... resolution and the signal intensity However, the resolution and signal intensity are quite dependent on the cleanliness and surface charges of the collision chamber and the slit jaws Uneven and unclean ... density, and there were two external potential V and V’ that could be obtained from this ground state system Two different Hamiltonians H and H’ and two different normalized wavefunctions and ’...
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Proteomics analysis of pseudomonas putida in biodegradation of aromatic compounds
... substrates Loh and his research group (Li and Loh 2006a and 2006b; Loh and Wang 2006; Loh and Wu 2006; Loh and Ranganath 2005; Wang and Loh 2000) have reported that 4-chlorophenol and 2-chlorophenol ... Figure 2-1 Aromatic compounds funneled to (a) catechol and (b) protocatechuate Major aerobic routes of the aromatic- ring cleavage: (c) ortho-, meta-, and gentisate cleavage (Harwood and Parales ... Figure 2-1 Aromatic compounds funneled to (a) catechol and (b) protocatechuate Major aerobic routes of the aromatic- ring cleavage: (c) ortho-, meta-, and gentisate cleavage (Harwood and Parales...
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