bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Facile and Efficient Syntheses of 2,2′‐Bipyridine‐Based Bis(phosphonic) Acids.
Authors: PENICAUD V. , ODOBEL F. , BUJOLI B. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Carbanionic Displacement Reactions at Phosphorus: Synthesis and Reactivity of 5,5‐Dimethyl‐2‐oxo‐2‐(1,3‐dithian‐2‐yl)‐1,3,2‐dioxaphosphorinane.
Authors: IORGA B. , MOURIES V. , SAVIGNAC P. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Novel Reductive Fragmentation Reaction in Thiosugar Chemistry.
Authors: BROCHARD L. , LORIN C. , SPIESS N. , ROLLIN P. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Chemoenzymatic Synthesis of UDP‐N‐acetyl‐α‐D‐galactosamine.
Authors: BUELTER T. , WANDREY C. , ELLING L. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of 17‐Membered Ring Macrocycle: Studies Toward the Enantioselective Synthesis of Fusidic Acid.
Authors: BARRIAULT L. , DESLONGCHAMPS P. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Total Synthesis of the Pyralomicinones.
Authors: KELLY T. R. , MOISEYEVA R. L. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Tentacular Chemistry of [Cp*Ru(OMe)]2
Authors: KOELLE U. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Creation and Study of Zeolite Catalytic Systems for the Transformation of Low‐Molecular Hydrocarbons into Valuable Chemical Products
Authors: MINACHEV KH. M. , DERGACHEV A. A. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Mono‐ and Bisfunctionalization of Fullerenes with N‐Containing Reactants
Authors: ULMER L. , TORRES‐GARCIA G. , WOLFF C. , MATTAY J. , LUFTMANN H. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Dynamic Kinetic Resolutions Catalyzed by a Planar‐Chiral Derivative of DMAP: Enantioselective Synthesis of Protected α‐Amino Acids from Racemic Azlactones.
Authors: LIANG J. , RUBLE J. C. , FU G. C. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Diastereoselective Resolution of 6‐Substituted Glycosides via Enzymatic Hydrolysis.
Authors: GRABOWSKA U. , MACMANUS D. A. , BIGGADIKE K. , BIRD M. I. , DAVIES S. , GALLAGHER T. , HALL L. D. , VULFSON E. N. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Germacrolide Glucoside from Lactuca tatarica.
Authors: KISIEL W. , BARSZCZ B. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Enantioselective Synthesis of (R)‐(+)‐Safrole Oxide.
Authors: MOHAN H. R. , RAO A. S. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Solution Extraction of Transition and Post‐Transition Heavy and Precious Metals by Chelate and Macrocyclic Ligands
Authors: YORDANOV A. T. , ROUNDHILL D. M. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: “Hinge” Peptide Libraries in Basic Research and Drug Development: Application to Breast Cancer and Multiple Sclerosis
Authors: MOORE G. J. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Kinetic and Mechanistic Features of Carbon Monoxide Hydrogenation over Supported Transition Metals
Authors: PAVLENKO N. V. , IL'CHENKO N. I. , PYATNITSKII Y. I. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: High Resolution NMR Techniques in Catalysis
Authors: ROE D. C. , KATING P. M. , KRUSIC P. J. , SMART B. E. 
Published: June 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Effective separation and simultaneous detection of cyromazine and melamine in food by capillary electrophoresis
Authors: Sun Hanwen , Liu Na , Wang Lixin , Wu Yuanyuan 
Published: June 2010

AbstractA novel and simple method was, for the first time, developed for effective separation and sensitive detection of cyromazine (CM) and its metabolite melamine (MM) by CZE with DAD (CZE‐DAD). Among different solvents, ACN containing 20% NH4OH was found to be the best one as an extractant of CM and MM in real samples. After centrifugation and filtering, the extract was analyzed by CZE‐DAD directly. The linearity is good in the range of 0.7–50 mg/L with correlation coefficient (r) of 0.9998. Under the optimal conditions, the method LOQ for the two analytes was 0.38 mg/kg for feed samples and 0.42 mg/kg for egg and liquid milk samples. The peaks of MM and CM were identified by comparison of their migration times in real samples with that in standard solution and spiked sample. The effective baseline separation and high sensitivity of MM and CM were achieved. The proposed method has been applied successfully for the quantitative determination of CM and MM residues in real samples. The average total recoveries ranged from 92.5 to 97.4% with the RSD of 3.0–5.1% for CM and from 93.0 to 97.6% with the RSD of 2.8–4.9% for MM. The proposed method offers the effective separation selectivity of CZE as well as a quicker analysis time for simultaneous determination of CM and MM in feed, egg and liquid milk.
Two‐dimensional electrophoresis and IgE‐mediated food allergy
Authors: De Angelis Maria , Di Cagno Raffaella , Minervini Fabio , Rizzello Carlo Giuseppe , Gobbetti Marco 
Published: June 2010

AbstractFood allergy is recognized as one of the major health concerns. It is estimated that ca. 4% of the population is affected by food allergenic disorders. Food allergies are defined as IgE‐mediated hypersensitivity reactions. Foods such as peanuts, tree nuts, wheat, soy, cow's milk, egg, fish and shellfish are regarded as responsible for the majority of reactions. The ubiquitous presence of allergens in the human foods coupled with an increased awareness of food allergies warrants to undertake appropriate preventive measures for protecting sensitive consumers from unwanted exposure to offending food allergens. 2‐DE followed by immunoblotting and identification of IgE‐reactive proteins, as a proteomic approach to identify new allergens in foods, are reviewed. Specific examples of identification of allergens in foods and beverages by using 2‐DE and IgE are described. Protein profiling using 2‐DE and allergens detection by IgE has become a powerful method for analyzing changes of allergens content in complex matrix during food processing.
Caffeine and stress alter salivary α‐amylase activity in young men
Authors: Klein Laura C. , Bennett Jeanette M. , Whetzel Courtney A. , Granger Douglas A. , Ritter Frank E. 
Published: June 2010

AbstractObjectiveWe examined the effects of caffeine and a psychological stressor on salivary α‐amylase (sAA) in healthy young males (age 18–30 years) who consumed caffeine on a daily basis.MethodsUsing a between‐subjects, double‐blind, placebo‐controlled design, 45 participants received either 200 or 400 mg of caffeine (Vivarin®) or placebo, rested for 20 min, and then performed 20 min of mental arithmetic. Saliva samples (assayed for sAA and caffeine), blood pressure, and heart rate were taken before (baseline) and 15 min after the math stressor (stress).ResultsBaseline sAA activity did not differ among the treatment groups; however, there was a statistically significant time by caffeine group interaction. Changes in sAA activity across the session were dependent on the amount of caffeine consumed. Following the challenge period, sAA activity among the placebo group was the lowest and sAA activity among the 400 mg treatment group was the highest. Separate repeated‐measures ANOVAs conducted for each drug treatment group revealed that sAA activity increased in response to stress and caffeine (i.e., 200 and 400 mg groups) but not to stress alone (i.e., placebo group).ConclusionsFindings provide evidence for acute sAA changes in response to caffeine and stress in habitual caffeine users. Copyright © 2010 John Wiley & Sons, Ltd.
Widespread dispersal of Icelandic tephra: how does the Eyjafjöll eruption of 2010 compare to past Icelandic events?
Authors: Davies Siwan M. , Larsen Gudrun , Wastegård Stefan , Turney Chris S. M. , Hall Valerie A. , Coyle Lisa , Thordarson Thor 
Published: June 2010

AbstractThe Eyjafjöll AD 2010 eruption is an extraordinary event in that it led to widespread and unprecedented disruption to air travel over Europe – a region generally considered to be free from the hazards associated with volcanic eruptions. Following the onset of the eruption, satellite imagery demonstrated the rapid transportation of ash by westerly winds over mainland Europe, eventually expanding to large swathes of the North Atlantic Ocean and the eastern seaboard of Canada. This small‐to‐intermediate size eruption and the dispersal pattern observed are not particularly unusual for Icelandic eruptions within a longer‐term perspective. Indeed, the Eyjafjöll eruption is a relatively modest eruption in comparison to some of the 20 most voluminous eruptions that have deposited cryptotephra in sedimentary archives in mainland Europe, such as the mid Younger Dryas Vedde Ash and the mid Holocene Hekla 4 tephra. The 2010 eruption, however, highlights the critical role that weather patterns play in the distribution of a relatively small amount of ash and also highlights the spatially complex dispersal trajectories of tephra in the atmosphere. Whether or not the preservation of the Eyjafjöll 2010 tephra in European proxy archives will correspond to the extensive distributions mapped in the atmosphere remains to be seen. The Eyjafjöll 2010 event highlights our increased vulnerability to natural hazards rather than the unparalleled explosivity of the event. Copyright © 2010 John Wiley & Sons, Ltd.
Birefringent and rheologic properties of milling yellow suspensions
Authors: Peebles F. N. , Prados J. W. , Honeycutt E. H. 
Published: June 2010

AbstractAqueous suspensions of Milling Yellow dye have been found to lie useful for engineering flaw studies by employing established birefringent techniques. In the present work, the basic birefringent and rheologic properties of Milling Yellow suspensions wore measured for a range of deformation rates important to the engineering applications. A concentric‐cylinder polariscope was used to measure the amount of birefringence and the angle of extinction for ten Milling Yellow suspensions at 25°C. varying in concentration from 1.25 to 1.46% dye by weight. The optical properties exhibited by these suspensions are similar to those of a number of colloidal suspensions as reported by past investigators. Rheologic data for Milling Yellow suspensions in the same concentration range were measured at 25°C. for deformation rates of 50–10 sec.−1 by means of a capillary viscometer. Over the complete range of deformation rates the rheologic data are accurately described with the Powell‐Eyring relationship for pseudo‐plastic materials.
On phenomenological rheo‐optic constitutive relations
Authors: Dill Ellis Harold 
Published: June 2010

AbstractThe birefringence exhibited by high polymers can be explained by considering light as an electromagnetic wave propagating through an anisotropic dielectric. The observed dependence of the birefringence on the deformation stale is described by expressing the dielectric tensor as a functional of the strain history. For small strains, the functional can be approximated by an integral so that the birefringence and strain are related by a law of the Boltzmann superposition integral form.
Studies of rates of spherulite deformation by low‐angle light scattering
Authors: Erhardt Peter , Sasaguri K. , Stein R. S. 
Published: June 2010

AbstractThe rates of spherulite deformation accompanying the elongation and contraction of polyethylene and the elongation of polybutene‐1 samples have been observed using a low‐angle light scattering technique. The light scattering pattern is obtained using a ruby pulsed laser which is flashed a predetermined time after the extension of the sample. It is found that spherulite deformation occurs in times less than 40 msec. which is less than the time required for the birefringence increase following deformation. Upon retraction, the light scattering pattern becomes symmetrical before the sample length has returned to its initial value. With quenched polybutene‐1, the rapid change in shape of the tight scattering pattern is accompanied by a slower change in intensity occurring over times comparable with that for the birefringence change. This is associated with changes in the crystal structure, orientation, and density within the spherulite following deformation.
Differential thermal analysis of polybutene‐1
Authors: Clampitt Bert H. , Hughes Richard H. 
Published: June 2010

AbstractThe three polymorphic forms of polybutone‐1 may be easily characterized by DTA: Form I has a DTA peak near 132°C; Form II has a peak near 118°C; and Form III has doublet peaks at 104° and 118°C. The kinetics of the room temperature transformation of Form II to Form I have been qualitatively investigated by DTA. The results indicate: (1) the thinner the film the faster the conversion rate and (2) the greater the catalysis residue in the system, the faster the conversion to Form I. The doublet in the Form III thermogram is due to the fact that the 104°C. transition corresponds to a phase change III to II with the 118°C. transition merely being the normal melting transition of Form II. Indeed, it is possible to heat Form III polybutene to 110°C, quench; and on standing it is found that the product has reverted to Form I.
Specific heat of synthetic high polymers. XL the glass transition in isotactic polypropylene
Authors: Abu‐Isa Ismat , Crawford V. A. , Haly A. R. , Dole Malcolm 
Published: June 2010

AbstractThe specific heat of various samples of isotactic polypropylene has been measured over the glass transition range from 230 to 310°K. A glass transition has been found, the magnitude of which is roughly proportional to the amorphous content of the sample. In highly crystalline samples the rise in cp with temperature over the glass transition range is probably partly caused by an increase in the number of modes of vibration that become active in this temperature range. A new thermodynamic name, the encraty, has been given to the function cp/T (equals (dS/dT)p or ‐ d2G/dT2). The encraty is abnormally low for quenched isotactic polypropylene for masons for which speculations only can be given at this time. Negative temperature drifts were observed below about 270°K.
Determination of free carbonyl and unbound water in polyacrolein by infrared spectrometry
Authors: Forbes J. W. , Schissler D. O. 
Published: June 2010

AbstractThe determinations of free carbonyl and unbound water contents of polyacrolein samples by standard chemical methods are not feasible because of labile hydration‐dehydration equilibria. The conditions used in the chemical determinations of carbonyl and water lead to quantitative dehydration and therefore always yield values of total carbonyl and total water content. An infrared method for the determination of free carbonyl and unbound water has been developed in which these labile equilibria are not perturbed. Polyacrolein, an insoluble and infusible substance, required the development, of a quantitative spectroscopic technique applicable to powdered solid samples. KBr pressed plate techniques are not applicable because they introduce the serious problem of water contamination inherent with the KBr methods. Free carbonyl and unbound water in polyacrolein have characteristic infrared absorption bands. The absorptivities of these bands were determined by appropriate standards. The method developed consists of spectroscopic examination of sample‐Fluorolube emulsions in fixed path infrared cells. The free carbonyl and the unbound water contents are then calculated as if the emulsion were a true solution of known concentration. The absorption due to the water bending mode at ∼6.1 μ is used for the calculation of the free water content, and the absorption due to the C=O stretching mode at ∼5.83 μ is used as a measure of the free carbonyl. An alternate method of analysis was developed after determining an absorptivity for the CH2 bending mode in polyacrolein and using this band as an internal reference.
Large‐scale elution fractionation of polymers
Authors: Kenyon A. S. , Salyer I. O. , Kurz J. E. , Brown D. R. 
Published: June 2010

AbstractFractionation of polymers is usually done on a very small scale where only viscosity, and possibly molecular weight measurement are made on the fractions. The elution fractionation system offers a possibility of fractionating on a sufficiently large scale to permit a thorough study of physical properties as a function of molecular weight. The elution column method was scaled up to fractionate one pound of polymer. Facilities were made so that the column could operate over a temperature range of 25 to 135°C. Each fraction was eluted by a separate solvent‐non‐solvent, mixture. The elution column was packed with Celite and the flow of the solvent‐non‐solvent mixture was controlled by a pumping system. Total fractionation time was 20 hours. The column temperature could be controlled to permit any temperature heating or cooling profile. The large scale elution column has been used to fractionate low and high density polyethylenes, ethylene copolymers, and polybutene‐1. Sufficient amount of polymer was obtained in each fraction to permit a study of mechanical properties as a function of molecular weight. From these fractions the effect of synthesized bimodal distributions on the melt flow and physical properties was investigated.
Transport through polymer membranes with a gradient of inhomogeneity
Authors: Rogers C. E. 
Published: June 2010

AbstractPolyethylene membranes with a gradient of graft copolymer and structural composition from one surface to the other have been prepared by radiation‐initiated polymerization of sorbed monomer. The monomer is distributed in a concentration gradient across the film during permeation through the film. Transport of low molecular weight solvent vapors through the graded films proceeds at different rates dependent on the direction of flow relative to the gradient of polymer composition. The magnitude and, in some cases, the direction of this differential transport effect are very sensitive to the method of preparation of the membrane.