Peter Read, Rubina Mohamed, Waldemar Januszczak, John Dugdale, Victoria McKee, Michael Prescott, Stephen Jones rugby correspondent, Rhoda Koenig, Barbara Hall, Marjorie Orr, Judith O'Reilly Education Correspondent, Christopher Morgan Religious Affairs Correspondent, Sheila Gunn, Nicholas Rufford, John Peter, Walter F Stowy, Amanda Ursell, Trudie Prym, Lesley White, Lawrie Madden, John Jay, Christopher Somerville, Emine Saner, Inigo Gilmore, Paul Smith, Norma Dinnie-Weall, Frank Whitford, Ferdinand Mount, Addison de Witt, Sally O'Reilly, David Smith, Kirstie Hamilton City Editor, Neil Wormald, Sebastian Hamilton, Stephen Grey, Mary Wilson, Dr Roger Henderson, Andrew Grice Political Editor, Richard Eaton, Robina Dam, Tony Allen-Mills, Isabella Blow, Martin James, Robert Sandall, Anthony Sattin, Mark Todd Mp, Irwin Stelzer, Peter Wilson, Roger Anderson, Mark Ottaway, Charlotte Wolff, Marian Phillips, David Dougill, John Evans, Joanna Rahim, David Hewson, Yvonne Ridley, Margaret Coles, Margarette Driscoll, Bryan Rogers, Debble Hill, Hugh Canning, Jeremy Clarkson, Stewart Lee, Peter Conradi, Louise Taylor, Anita Chaudhuri, Michael Jones, George Perry, Kevin Connolly, Graham Otway, Cathy Scott-Clark, Rex Gooch, Shelley von Strunckel, Paul Nuki Consumer Affairs Correspondent, Mike Laws, Emma Nicholson, Paul Ham, Stuart Wavell, Paul Donovan, Joan Norton, Jonathan Leake Transport Correspondent, Sue Lawrence, Philip Craigie, Stan Labovitch, Smita Talati, Paul Driver, Paul Bray, Garth Pearce, Simon Fanshawe, Ann McFerran, Ian Hawkey, Ian Chadband, Fred Taylor, Lisa Freedman, Audrey Anderson, Rev Derek Cook, Michael Prescott Chief Political Correspondent, Neil Harman, Kirstie Hamilton, Tom Shone, Rufus Olins, Mark Edwards, Mark Austin, Hugh McLlvanney, Nicholas Rufford Home Affairs Editor, Chrissy lley, Dave Thomas, Allstair Scott, John Harlow Arts Correspondent, Magnus Grimond, Jennifer Asiama, Raymond Keene, Jonathan Leake Environment Correspondent, John Karter, Gareth Huw Davies, Zoe Brennan, Andrew Roberts, Marie Colvin, Ladlslaw, Debbie Hill, Diana Wright, Peter Allen, Loyd Grossman, Rebecca Tanqueray, Stephen Jones, Richard Evans, Nick Cain, Michael Higgins, Michael Wright, Adrienne Connors, John Cobbett, Andrew Smith, Paul Nuki, Andrew Grice, Steve Connor Science Correspondent, John Givens, Rob Ryan, Claire Oldfield, Zoë Linkson, David Walsh, Keith Martin, Marceline Siddons, Cheryl Younson, Stephen McGinty, Stephen Armstrong, Bill Bryson, Jo Spreadborough, Paul Kavanagh, Josh Salzmann, Mark Prigg, George Walden, Garth Alexander, Rachel Cooke, Peter Hardy, Jessica Berry, Eric Owen, Maurice Chittenden, Alex Fortune, Ruth Brett, Andrew Lorenz Business Editor, Judith O'Reilly, Mark Franchetti, Ray Hutton, Denis Watkins, Peter Watts, Joseph Kean, Jonathan Leake, Susan Elkin, Tara Palmer-Tomkinson, Jennai Cox, Michael Sheridan, Sean Hargrave, Christine Webb, John Harlow, Matthew Lynn, Godfrey Smith, Michael Hodges, Andrew Alderson, John Waples, A A Gill, Andrew Malone, Matthew Campbell, David Campbell, David Hutcheon, Kirsty Lang, Robert Johnston, Stephen Pettitt, Chrissy Iley, Kevin Goldstein-Jackson, Cherry Norton, Neil Gilchrist, Andrew Lorenz, Naomi Caine, Liam Clarke, David Wickers, Hazel Courteney, Adrian Levy, Roger Dobson, John Cornwell, Mark Hodson, Steve Connor, Nicholas Hellen Media Correspondent, Joe Lovejoy, Rupert Steiner, Chris Lightbown, Hugh Pearman, Simon Sebag Montefiore, David Parsley, David Smith Economics Editor, Simon Trump, Peter Cooper, Bob Dwyer, Joanna Simon, Andrew Davis, India Knight, George Riley, Dan Pearson, Stephen Hayward, Boris Schapiro, Karen Robinson,
... facials? By Robina Dam. Illustration: Laaura Ljungkvist Christian Diol Paris Picture Gallery On supplement cover: embroidered cashmere ...
1997 - Gale Group | Sunday Times HA GDA
Xinyu Wang, Zefei Yuan, Xueyi Pan, Jianbo Li, Qinggang Tan, Jie Ren,
... series of poly(ε-caprolactone-co-lactic acid) diols were synthesized via one-pot ring-opening polymerization ... caprolactone (CL) feed ratios. Subsequently, the eco-friendly diols were mixed with polyether diol, 4,4′-diphenylmethane diisocyanate (MDI), and other additives ... transition temperature (Tg) of the eco-friendly polyester diols. The differential scanning calorimetry (DSC) data demonstrated that PCL-diol had the highest crystallinity, and the polarizing optical ... observations revealed the smallest spherulite size in PCLA28-diol. Thermogravimetric analysis (TGA) results indicated that the 5 ...
Tópico(s): Polymer composites and self-healing
2023 - American Chemical Society | ACS Applied Polymer Materials
Miles Kington, Lucy Hodges, Education Correspondent, Keith Dalton, Lucy Hodges Education Correspondent, Simon Barnes, Andrew Gilchrist, David Miller Chief Sports Correspondent, Geraldine Norman, Sale Room Correspondent, Kathleen Griffiths, Cliff Feltham, Sally Brompton, Hilary Finch, Ian Murray, Michael Binyon, Stewart Tendler and Frances Gibb, Mandarin (Michael Phillips), Peran T. Dachinger, Richard Eaton, Caroline Moorehead, C. J. Schofield, Chair, Michael Grylls (Chairman), Brian Gianville, Jim Railton, Rebecca Tyrrel, Stephen Taylor, Peter Davenport, Bill Johnstone Technology Correspondent, R. Wheen, Alice Brinton, Matthew May, Thomson Prentice Science Correspondent, Earl Wild, Alan Hamilton, James Fawcett, President, G. R. S. Cheyney, McGregor of Durris President, David Smith Economics Correspondent, John Young, Michael Hamlyn, Diana Geddes, Michael Watts, David Guest, Basil Hume, President, Rex Bellamy, Tennis Correspondent, Eric Gillett, Chair, Geoffrey Matthews, Suzy Menkes, Roger Scruton, Rasit Gurdilek, Michael Baily Transport Editor, Nicholas Harling, Clive Oliver, Chair, Celia Brayfield, B. R. Toomey, Richard Dowden, Alison Eadie, John Russell Taylor, Christopher Mosey, Paul Griffiths, Charles Harrison, Harry Kerr, Richard Evans, John Carlin, Craig Seton, Lord Thomson, Richard Owen, Irving Wardle, Basil Boothroyd, Richard Bassett, Keith MacKlin, Dennis Kavanagh, Geof Wheelwright, Frank Brown, Christopher Thomas, George Ace, Christopher Walker, Judith Huntley, George Hill, Paul Newman, Alan Franks, Michael Hornsby, Michael Prest, Peter Dear and Peter Davalle, Charles Groves, Lake Sagaris, Alec Bristow, Tim Jones, Michael Horsnell, John Woodcock, Cricket Correspondent, Alan Devlin, Noël Goodwin, Martin Banks, Robert Fisk, Peter Smith, Michael Prest, Financial Correspondent, Monica A. Healy, Chair, Derek Harris Industrial Editor, Hugh Taylor, Nicholas Timmins, Social Services Correspondent, Richard Wigg, David Hewson Arts Correspondent, Masham of Ilton, President, David Hands, Rugby Correspondent, Richard Ford, Philip Webster Political Reporter, Geoffrey Munday, Chair, Ivor Davis, Stuart Jones, Football Correspondent, Kenneth Fleet Executive Editor,
... Ford Going faster on the road Distributive Industry Diol TNT Skypak Ryder DH: Supermarkets set the pace ...
1986 - Gale Group | TDA
Jie Chen, Xiu Luo, Ying Sun, Si Si, Yuankai Xu, Yong‐Min Lee, Wonwoo Nam, Bin Wang,
... an alkene with OsO4 to produce a vicinal diol. Download figure Download PowerPoint Introduction Optically active syn- ... the ester groups renders the transformation of cis-diols regioselectively.3–7 With respect to their distinct ... due to the overoxidation and cleavage of the diol products. In addition, when a stoichiometric amount of ... Scheme 1a).20,21 In this reaction, cis-diols are yielded with excellent stereo- and enantioselectivities; O2 ... oxygen atoms of O2 are incorporated into the diol product at the same time (Scheme 1a).20, ...
Tópico(s): Synthetic Organic Chemistry Methods
2022 - Chinese Chemical Society | CCS Chemistry
Kifah Nasr, Audrey Favrelle, Rosica Mincheva, Grégory Stoclet, Marc Bria, Jean‐Marie Raquez, Philippe Zinck,
... furan-2,5-dicarboxylate (DEFDC) with different aliphatic diols and diesters of variable chain length catalyzed by ... carried out in diphenyl ether. The influence of diol and diester chain length, the molar concentration of ... terms of M̅n buildup were noticed. Only longer diols starting from octane-1,8-diol successfully reacted with up to 90% DEFDC as opposed to only 25% DEFDC reacting with short diols such as butane-1,4-diol. While varying the chain length of the diester, it was evident that shorter diols such as hexane-1,6-diol have better ...
Tópico(s): Enzyme Catalysis and Immobilization
2022 - American Chemical Society | ACS Applied Polymer Materials
Cai-Feng Xiong, Jun Ding, Quan‐Fei Zhu, Ya‐Li Bai, Xiao‐Ming Yin, Tian-Tian Ye, Qiong‐Wei Yu, Yu‐Qi Feng,
cis-Diol-containing metabolites are widely distributed in living organisms, and they participate in the regulation of various important biological activities. The profiling of cis-diol-containing metabolites could help us in fully understanding ... method for the screening and annotation of cis-diol-containing metabolites in biological samples. Boronic acid reagent ... phenylaminomethylphenylboronic acid was used to label the cis-diol-containing metabolites in biological samples to improve the selectivity and MS sensitivity of cis-diol-containing metabolites. Based on the characteristic 0.996 ...
Tópico(s): Analytical Chemistry and Chromatography
2021 - American Chemical Society | Analytical Chemistry
Produção Nacional
Revisado por pares
Tiago Daniel Madureira de Medeiros, Thaís Dolfini Alexandrino, Gláucia María Pastore, Juliano Lemos Bicas,
... different value-added aroma compounds. Limonene-1,2-diol is one of the oxyfunctionalyzed counterparts of limonene ... the recovery and purification of limonene-1,2-diol obtained from fungal biotransformation, which is an essential ... broth or supernatant) for recovering limonene-1,2-diol. Subsequently, sequential extractions with different solvents were considered for recovering larger amounts of limonene-1,2-diol as well as for removing the residual limonene. ... procedures were evaluated for purifying limonene-1,2-diol originating from a limonene:limonene-1,2-diol ...
Tópico(s): Microbial Metabolic Engineering and Bioproduction
2020 - Elsevier BV | Separation and Purification Technology
Alastair Little, Alessandro Pellis, James W. Comerford, Edwin Naranjo-Valles, Nema Hafezi, Mark Mascal, Thomas J. Farmer,
... exclusively been prepared with conventional primary (1°) alcohol diols, while secondary (2°) alcohol diol monomers have largely been overlooked until now, despite preliminary observations that using methyl-branched diols increases the Tg of the resultant polyesters. Little ... of what impact the use of 2° alcohol diols has on other properties such as material strength, ... life. To ascertain the effects of using 2° diols on the properties of furandioate-adipate copolyesters, a ... ester (FDEE) using different 1° and 2° alcohol diols was prepared. Longer transesterification times and greater excesses ...
Tópico(s): Carbon dioxide utilization in catalysis
2020 - American Chemical Society | ACS Sustainable Chemistry & Engineering
Cong Anh Khanh Le, Luc Choisnard, Denis Wouessidjewe, Jean‐Luc Putaux,
... folded lamellar crystalline complexes of amylose with aliphatic diols were prepared and characterized by transmission electron microscopy ... Four allomorphs were identified, depending on the complexing diol and crystallization conditions, that consisted of orthorhombic lattices ... 7-fold amylose single helices. Straight-chain n-diols (ethane-1,2-diol, butane-1,4-diol, hexane-1,6-diol) yielded 6-fold helical complexes regardless the length of the linear chain, whereas a bulkier branched diol (2-methylpentane-2,4-diol) induced the formation ...
Tópico(s): Surfactants and Colloidal Systems
2020 - Elsevier BV | Polymer
Bunthoeun Nim, Mantana Opaprakasit, Atitsa Petchsuk, Pakorn Opaprakasit,
... specialty products. A microwave-assisted alcoholysis reaction, using diols and tetrabutyl orthotitanate (TBT) catalyst, was employed. The effects of the types of diols and PLA/diol feeding ratios on the structures and properties of ... by using ethylene glycol (EG), propane-1,3-diol (PDO), and butane-1,4-diol (BDO). The PLA/diol ratios were varied from 1:1 to 4: ... HMQC and HMBC spectroscopy. The products compost to diol-capped lactate sequences with different lengths, i.e., ... CH2)x-O-LA. The contents depend on diol types and the PLA/diol feeding ratio. The ...
Tópico(s): Carbon dioxide utilization in catalysis
2020 - Elsevier BV | Polymer Degradation and Stability
Liping Zhang, Bidhan Chandra De, Wenjun Zhang, Attila Mándi, Zhuangjie Fang, Chunfang Yang, Yiguang Zhu, Tibor Kurtán, Changsheng Zhang,
... biocatalysts that convert epoxides to valuable chiral vicinal diol precursors of drugs and bioactive compounds. Nonetheless, the ... biocatalysts that convert epoxides to valuable chiral vicinal diol precursors of drugs and bioactive compounds. Nonetheless, the ... attractive in asymmetric synthesis, because the resultant vicinal diols are valuable building blocks of chiral drugs and ... the cofactor-independent hydrolysis of epoxides to vicinal diols (3Lee E.Y. Shuler M.L. Molecular engineering ... intermediate and release the products as trans-vicinal diols (12Hvorecny K.L. Bahl C.D. Kitamura S. ...
Tópico(s): Pharmacogenetics and Drug Metabolism
2020 - Elsevier BV | Journal of Biological Chemistry
Linghui He, Manyu Kang, Dongrong Zhang, Guodong Jia,
Long chain alkyl diols (LCDs) in marine environments are useful indicators of source organisms, ambient temperature, upwelling and nutrient conditions. However, the distribution ... that the fractional abundance of C32 1,15-diol (FC32 1,15-diol) was highest in coastal area close to the CRE, with FC32 1,15-diol > 15% implying significant freshwater input. The C28 and C30 1,13-diols showed a similar spatial distribution to the C32 1,15-diol, suggesting that the long chain diol index (LDI), a sea surface temperature (SST) proxy, ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2019 - Elsevier BV | Organic Geochemistry
Shiliang Wu, Dongil Kang, Yuan Liu, Ziwei Wang, Rui Xiao, André L. Boehman,
... hydrogenated biomass pyrolysis oil, namely, the C2-C4 diols, including ethanediol, 1,2-propanediol, and 1,2- ... ratio (CCR), it is observed that C2-C4 diols had similar oxidation reactivity as ethanol, indicating that C2-C4 diols had the potential for use as a supplement ... In addition, both of ethanol and C2-C4 diols did not display low temperature heat release. The ignition characteristics of C2-C4 diols suggest that diol/TPGME blends could be used, as TPGME has high ignition quality and could be generated from diols with a carbon selectivity as high as 75%. ...
Tópico(s): Advanced Combustion Engine Technologies
2019 - Elsevier BV | Fuel
Chung Ju, Sang‐Min Jeon, Hee‐Sook Jun, Chang‐Kiu Moon,
The effects of diol-ginsenoside fraction (Diol-GF) and triol-ginsenoside fraction (Triol-GF) from Korean Red Ginseng on the development of type 1 diabetes (T1D) were examined in ... process.DP-BB female rats were treated with Diol-GF or Triol-GF daily from the age ... 11-12 weeks (1 mg/g body weight).Diol-GF delayed the onset, and reduced the incidence, of T1D. Islets of Diol-GF-treated DP-BB rats showed significantly lower ... and preserved higher plasma and pancreatic insulin levels. Diol-GF failed to change the proportion of lymphocyte ...
Tópico(s): Lipid metabolism and disorders
2019 - Elsevier BV | Journal of Ginseng Research
Jong‐Ku Gal, Jung‐Hyun Kim, Kyung‐Hoon Shin,
Long chain alkyl diols (LCDs) have previously been used to develop several diol indices as a proxy for upwelling or stratification conditions and ... which calls into question to what extent these diol indices can serve as a proxy in the ... saturated and unsaturated C28 and C30 1,14-diols were dominant in most SPM samples investigated. The ... the C28:1 and C30:1 1,14-diols were positively associated with nutrient concentrations. However, only the C28:1 1,14-diol in addition to the C28 1,14-diol was positively associated with nutrient concentrations in the ...
Tópico(s): Marine and coastal ecosystems
2018 - Elsevier BV | Organic Geochemistry
Maged Younes, Peter Aggett, Fernando Aguilar, Riccardo Crebelli, Metka Filipič, María José Frutos Fernández, Pierre Galtier, David Michael Gott, Ursula Gundert‐Remy, Gunter Georg Kuhnle, Claude Lambré, Jean‐Charles Leblanc, Inger Therese Lillegaard, Peter Moldéus, Alicja Mortensen, Agneta Oskarsson, Ivan Stanković, Ine Waalkens‐Berendsen, Rudolf Antonius Woutersen, Matthew Wright, Leon Brimer, Pasquale Mosesso, Anna Christodoulidou, Zsuzsanna Bagó-Horváth, Federica Lodi, Alexandra Tard, Birgit Dusemund,
... with the re-evaluation of propane-1,2-diol alginate (E 405) when used as a food ... and excretion (ADME) data on propane-1,2-diol alginate gave evidence for the hydrolysis of this additive into propane-1,2-diol and alginic acid. These two compounds have been ... and subchronic dietary studies with propane-1,2-diol alginate. The available data did not indicate a genotoxic concern for propane-1,2-diol alginate (E 405) when used as a food additive. Propane-1,2-diol alginate, alginic acid and propane-1,2-diol ...
Tópico(s): Consumer Attitudes and Food Labeling
2018 - Wiley | EFSA Journal
Robert F. DeJaco, Bahman Elyassi, Matheus Dorneles de Mello, Nitish Mittal, Michael Tsapatsis, J. Ilja Siepmann,
Adsorption equilibria of alkane-α, ω-diols (propane-1,3-diol, butane-1,4-diol, pentane-1,5-diol, and hexane-1,6-diol) from aqueous solution onto an all-silica zeolite ... 323 K and also for pentane-1,5-diol (C5) at 348 and 383 K. After an ... as the number of carbon atoms of the diols increases from 3 to 6. The abrupt change ... adsorbed molecules results in a lower number of diol-diol hydrogen bonds. However, the C5 isotherm does not ...
Tópico(s): Phase Equilibria and Thermodynamics
2018 - American Institute of Physics | The Journal of Chemical Physics
Sergio Balzano, Julie Lattaud, Laura Villanueva, Sebastiaan W Rampen, Corina P. D. Brussaard, Judith van Bleijswijk, Nicole J. Bale, Jaap S. Sinninghe Damsté, Stefan Schouten,
Abstract. Long chain alkyl diols (LCDs) are widespread in the marine water column and sediments, but their biological sources are mostly unknown. Here we combine ... and potential LCD producers. The C30 1,15-diol was detected in all SPM samples and accounted ... minor proportions of C28 and C30 1,13-diols, C28 and C30 1,14-diols, as well as C32 1,15-diol were found. The concentration of the C30 and C32 diols was higher in the mixed layer of the ... deep chlorophyll maximum (DCM), whereas concentrations of C28 diols were comparable. Sequencing analyses revealed extremely low contributions (≈ ...
Tópico(s): Marine and coastal ecosystems
2018 - Copernicus Publications | Biogeosciences
Е А Вальдман, И. Г. Капица, Ivanova Ea, Т. А. Воронина, Oleg V. Ardashov, Константин П. Волчо, В. А. Хазанов, Нариман Ф. Салахутдинов,
... en-2-yl)cyclohex-3-ene-1,2-diol (Diol) demonstrates high antiparkinsonian activity in some animal models. ... an extended study of the antiparkinsonian activity of Diol in a set of relevant animal models. Diol (20 mg/kg) exhibited an anticataleptogenic effect in ... reserpine-induced model of oligokinesia. The ability of Diol singly administered before MPTP injection to reduce rigidity ... subchronic administration of MPTP (4 × 20 mg/kg), Diol at a dose of 20 mg/kg reduced ... of rotenone that subchronic daily oral administration of Diol prior to rotenone injection reduced severity of PS ...
Tópico(s): Natural product bioactivities and synthesis
2017 - Elsevier BV | European Journal of Pharmacology
Alexander M. Tatara, Emma Watson, Tejus Satish, David W. Scott, Dimitrios P. Kontoyiannis, Paul S. Engel, Antonios G. Mikos,
... the synthesis and characterization of variants of poly(diol fumarate) and poly(diol fumarate-co-succinate). Through a Fischer esterification, α,ω-diols and dicarboxylic acids were polymerized to form aliphatic ... resulted in unsaturated chains. By choosing α,ω-diols of different lengths (1,6-hexanediol, 1,8- ... monomer feed (33, 50, and 100 mol %), nine diol-based macromer variants were synthesized and characterized for ... properties (swelling, sol fraction, compressive modulus) based on diol length and amount of unsaturated bonds. A statistical ...
Tópico(s): Advanced Polymer Synthesis and Characterization
2017 - American Chemical Society | Biomacromolecules
Jordan N. Smith, Denis Mehinagic, Subhasree Nag, Susan Crowell, Richard Corley,
... a]pyrene-7,8-dihydrodiol (B[a]P diol), dibenzo[def,p]chrysene-11,12 diol (DBC diol). Each of these diols can be further metabolized by cytochrome P450 enzymes to highly reactive diol-epoxide metabolites that readily react with DNA or ... and phase II glucuronidation of B[a]P diol and DBC diol were measured in hepatic microsomes from female B6129SF1/ ... Mice and rats demonstrated similar B[a]P diol phase I metabolic rates. Compared to rodents, human phase I metabolism of B[a]P diol demonstrated lower overall metabolic capacity, lower intrinsic clearance ...
Tópico(s): Pharmacogenetics and Drug Metabolism
2017 - Elsevier BV | Toxicology Letters
Marijke W de Bar, Denise J C Dorhout, Ellen C. Hopmans, Sebastiaan W Rampen, Jaap S. Sinninghe Damsté, Stefan Schouten,
Long chain diols are lipids that have gained interest over the last years due to their high potential to serve as biomarkers and diol indices have been proposed to reconstruct upwelling conditions ... little is known about the sources of the diols and the mechanisms impacting their distribution. Here we studied the factors controlling diol distributions in the Iberian Atlantic margin, which is ... high fractional abundances of the C32 1,15-diol (normalized with respect to the 1,13- and 1,15-diols) were observed in surface sediments in front of ...
Tópico(s): Methane Hydrates and Related Phenomena
2016 - Elsevier BV | Organic Geochemistry
John S. Lomas, Laurent Joubert, François Maurel,
... nuclear magnetic resonance (NMR) shifts of the free diol and of its 1 : 1 and 1 : 2 ... pyridine have been computed for five symmetrical alkane diols on the basis of density functional theory, by ... are further enhanced on going from the free diol to the corresponding 1 : 1 diol/pyridine complex. This is confirmed by atoms‐in‐ ... computed OH and CH proton shifts for the diol and the two complexes correlate well with values ... analysing data from the NMR titration of the diols in benzene against pyridine. Shift values for the ...
Tópico(s): Analytical Chemistry and Chromatography
2016 - Wiley | Magnetic Resonance in Chemistry
Magdalena Rogulska, Anna Kultys, S. Pikus,
... 2,2′-[sulfanediylbis(benzene-1,4-diyloxy)]diethanol (diol SE) and 2,2′-[methanediylbis(benzene-1,4-diylmethanediylsulfanediyl)]diethanol (diol ME), 1,1′-methanediylbis(4-isocyanatobenzene) and 30, 45 and 60 mol% aliphatic polycarbonate diol of M n = 2000 g mol−1 (Desmophen® ... or partially crystalline structures. The polymers based on diol ME showed lower glass transition temperatures (−9 to (− ... somewhat higher values shown by those obtained from diol ME. The PCURs decomposed in two (from diol ME) or three (from diol SE) stages, and ...
Tópico(s): biodegradable polymer synthesis and properties
2016 - Springer Science+Business Media | Journal of Thermal Analysis and Calorimetry
Julie Lattaud, Jung-Hyun Kim, Cindy De Jonge, Claudia Zell, Jaap S. Sinninghe Damsté, Stefan Schouten,
Long chain alkyl diols are lipids that occur ubiquitously in marine sediments and are used as a proxy for sea surface temperature (SST), using the Long chain Diol Index (LDI), and for upwelling intensity/high nutrient ... The distribution of 1,13- and 1,15-diols has been documented in open marine and lacustrine ... matter, input. Here we studied the distribution of diols in four shelf seas with major river outflows: ... The relative abundance of the C32 1,15-diol is consistently higher close to the river mouth ...
Tópico(s): Marine Biology and Ecology Research
2016 - Elsevier BV | Geochimica et Cosmochimica Acta
Fernand Labrie, Yuyong Ke, Renaud Gonthier, Alain Bélanger,
Sensitive and accurate measurement of androstane-3β,17β-diol and androstane-3α,17β-diol in the circulation is important for clinical research ... simultaneous accurate measurement of serum androstane-3α,17β-diol and androstane-3β,17β-diol in postmenopausal women. The LLOQ of 1 pg/ ... derivatization efficiency. Potential interference from androstane-3α, 17α-diol, androstane-3β, 17α-diol, and 5-androstenediol has been well separated from the two target diols. The high level of specificity has been determined ...
Tópico(s): Pharmacogenetics and Drug Metabolism
2015 - Elsevier BV | The Journal of Steroid Biochemistry and Molecular Biology
William A. Marinaro, Richard J. Prankerd, Kaisa Kinnari, Valentino J. Stella,
... between alkyl and aryl boronic acids and vicinal-diols or 1,2-diols in aqueous solution. As used here, 1,2-diols includes polyols with one or more 1,2-diol pairs. Multiple techniques were used including apparent pKa ... favored. For all the acids and 1,2-diols and the conditions studied, evidence only supported 1: ... formation increased with increasing number of 1,2-diol pairs but stereochemistry may also play a role as sorbitol with five possible 1,2-diol pairs and five isomers (taking into account the ...
Tópico(s): Organoboron and organosilicon chemistry
2015 - Elsevier BV | Journal of Pharmaceutical Sciences
Yan Huang, Zhiwu Jiang, Xianyan Liao, Jian-Ping Hou, Xinchu Weng,
2-(tert-Butyl)-5-methylbenzene-1,4-diol and 3-(tert-butyl)-5-methylbenzene-1,2-diol were synthesised by Friedel-Craft reaction of 2-methylbenzene-1,4-diol and 4-methylbenzene-1,2-diol, respectively, with tertiary butanol providing reasonable yields. The ... compounds and 2-(tert-butyl)benzene-1,4-diol were investigated and compared by means of 2, ... test; 3-(tert-butyl)-5-methylbenzene-1,2-diol is the most potent antioxidant tested by using ... radical scavenging abilities of 2-methylbenzene-1,4-diol, 4-methylbenzene-1,2-diol and 2-(tert- ...
Tópico(s): Synthesis and biological activity
2014 - Czech Academy of Agricultural Sciences | Czech Journal of Food Sciences
... magnetic resonance (NMR) spectra of butane-1,4-diol, pentane-1,4-diol, (S,S)-hexane-2,5-diol, 2,5-dimethylhexane-2,5-diol and cyclohexane-1,4-diols (cis and trans) in benzene and some other ... conformer distribution and the NMR shifts of these diols in benzene have been computed on the basis ... Vicinal three-bond coupling constants for the acyclic diols are calculated from the relative conformer populations, the ... dependence of coupling constants for butane-1,4-diol is attributed to conformational change. Coupling constants for ...
Tópico(s): Free Radicals and Antioxidants
2014 - Wiley | Magnetic Resonance in Chemistry
Ken Yamazaki, Kazuhiro Takagi, Ryota Kataoka, Masaaki Kotake, Teiko Yamada, Hiromasa Kiyota,
... 7-trans-dihydroxydihydroaldrin (otherwise known as aldrin-trans-diol) and 9-hydroxydieldrin are well documented. The dieldrin- ... production of a small amount of aldrin-trans-diol. A reduction in the levels of aldrin-trans-diol by strain DDF has also been observed. Based ... dieldrin to more polar compounds via aldrin-trans-diol. We have conducted a study to identify the metabolites arising from aldrin-trans-diol. The results showed that strain DDF gave reduced levels of aldrin-trans-diol and also produced unknown metabolites. Ultra performance liquid ...
Tópico(s): Microbial bioremediation and biosurfactants
2014 - Elsevier BV | International Biodeterioration & Biodegradation