bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Receptors for Anions
Authors: Itsikson N. A. , Morzherin Yu. Yu. , Matern A. I. , Chupakhin O. N. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Synthetic Approaches to Lanthanide Complexes with Tetrapyrrole Type Ligands
Authors: Pushkarev V. E. , Tomilova L. G. , Tomilov Yu. V. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Molecular Self‐Assembly into One‐Dimensional Nanotube Architectures and Exploitation of Their Functions
Authors: Shimizu Toshimi 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Surgery of Fullerenes
Authors: Murata Michihisa , Murata Yasujiro , Komatsu Koichi 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 Building Block Approach to Monofluorinated Organic Compounds
Authors: Konev Alexander S. , Khlebnikov Alexander F. 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Induced Helical Backbone Conformations of Self‐Organizable Dendronized Polymers
Authors: Rudick Jonathan G. , Percec Virgil 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Bisindole Alkaloids
Authors: Kam Toh‐Seok , Choo Yeun‐Mun 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 Biomimetic Approach to Some Specifically Functionalized Cyclic Terpenoids
Authors: Kulcitki Veaceslav 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: N‐Heterocyclic Carbenes/Imidazolium Salts as Substrates in Catalysis: The Catalytic 2‐Substitution and Annulation of Heterocyclic Compounds
Authors: Cavell Kingsley 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Benzofuroxan and Furoxan: Chemistry and Biology
Authors: Cerecetto Hugo , Gonzalez Mercedes 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 (Photo)chemistry of Anthocyanins
Authors: Quina Frank H. , Freitas Adilson A. , Macanita Antonio L. , Ferreira da Silva Palmira , Lima Joao Carlos 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Inclusion Complexes of Halide Anions with Macrocyclic Receptors
Authors: Hossain Md. Alamgir 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Claisen—Johnson Orthoester Rearrangement
Authors: Langlois Yves 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Controlled Cyclopolymerization of Dienes by Late Transition Metal Complexes
Authors: Takeuchi Daisuke , Park Sehoon , Osakada Kohtaro 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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 Potent ανβ3/αIIb β3 Dual Antagonists Tricyclic Pharmacophore‐Based Molecules and Their Selectivity Control
Authors: Ishikawa Minoru , Kubota Dai , Ajito Keiichi 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: In silico Drug Discovery Science — Research and Education
Authors: Tsujimoto Gozoh 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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: Role of Catecholamine Metabolism in Blood Pressure Regulation Using Chemiluminescence Reaction Detection
Authors: Tsunoda Makoto 
Published: March 2009

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.
Fluid electrification resulting from constricted flow
Authors: Goodfellow H. D. , May Z. , Graydon W. F. 
Published: March 2009

AbstractThe electrification of fluids of low conductivity resulting from constricted flow has been studied. Currents and voltages have been measured using insulated test sections. For discussion purposes, the electrification process has been subdivided into two regions; an electrostatic region (high static voltages and low currents) and a streaming region (low voltages and high streaming currents produced by flow constriction).Symmetrical negative and positive streaming current curves were obtained from the insulated metal tubes located upstream and downstream from the constriction. The magnitude of the streaming current was dependent on the constriction flow area, the polar solute, the conductivity of the solution, and the flow rate. Low voltages were measured in the streaming region because of the high conductivity of the fluid. Currents have been related to the measured voltage and the conductivity of the solution.
Heats of mixing of liquids: Application of Quasi‐lattice theory to Benziene‐n‐Alkane systems
Authors: Deq. Jones Hoskyns K. , Poon David P. L. , Lama R. F. , Lu Benjamin C.‐Y. 
Published: March 2009

AbstractHeats of mixing of n‐pentane, n‐decane and n‐tridecane with benzene were experimentally determined at 25d̀C. Values of the parameters associated with the quasi‐lattice theory were evaluated using the experimental results together with the literature heats of mixing values for the systems benzene‐n‐hexane, benzene‐n‐heptane, benzene‐n‐octane, benzene‐n‐nonane and benzene‐n‐hexadecane. Using the literature model for benzene, the values of the parameters for the n‐alkanes that resulted in the “best fit” of the experimental data differ from those reported in the literature. A set of parameter values is reported which permits the evaluation of heats of mixing values for binary benzene‐n‐alkane systems within an average absolute deviation of 3.6%, with the exception of the system benzene‐n‐hexadecane.
Calcination of limestone in a tubular reactor
Authors: Kehat Ephraim , Markin Alexander 
Published: March 2009

AbstractTheoretical expressions were developed for the design of a tubular reactor for the calcination of limestone, pneumatically conveyed by flue gas. The total residence time and the length of the reactor are affected in particular by the particle size, the excess thermal capacity of the gas and the heat transfer coefficient. High throughput can be achieved in relatively small reactors.An experimental investigation verified a theoretical prediction, that a considerable part of the decomposition takes place in the first few centimeters of the reactor length. The rate of heat transfer in this section was high, with Nusselt numbers of 9.9 to 31.7.
Radial gas dispersion in a column packed with screen cylinders
Authors: Chen B. H. , Osberg G. L. 
Published: March 2009

AbstractGaseous eddy diffusivity measurements were made by a point injection technique in a 6.5‐in. column packed with open‐end screen cylinders varying in size from 3/8‐in. to 1 1/2‐in. diameter, and made from wire cloth varying from 4 to 28 mesh/in. Oxygen was used as the tracer gas. Only packings made from 4 to 10 mesh/in. produced concentration profiles which were symmetric. The latter data show that turbulent diffusivity increases linearly with gas flow rate, but decreases with decreasing mesh opening and wire diameter. A correlation is presented for turbulent diffusivities as a function of the Reynolds number, dmuρ/m̈, and the ratio dw/dm.
TVA development work and experience with pan granulation of fertilizers
Authors: Yovng R. D. , Mccamy I. W. 
Published: March 2009

AbstractFor several years TVA has studied pan‐granulation processes for producing granular fertilizers. Tests were made with pans ranging from 38 inches to 14 feet in diameter. Most of the work was on granulation of ammonium nitrate, urea, and N‐P and N‐P‐K fertilizers containing one of these materials. In this work the pan granulator was effective and efficient because of its good classification action. However, the pan was not suitable when ammoniation during granulation was desired. In most of the test work, ammoniation of the feed acids was completed in a solution system where considerable water was removed by the heat of reaction. Well‐rounded, durable granules were produced at low recycle rates. Potential advantages and limitations of the process are pointed out in this paper.
A shock tube study of the high temperature reactions of nitrogen with hydrocarbons
Authors: Rao V. V. , Mackay D. , Trass O. 
Published: March 2009

AbstractA single pulse shock tube has been used to study the reactions of nitrogen with methane, ethane and acetylene at 1400°‐6000°K. Reactants heated by the reflected shock for about 1–1.5 milliseconds are cooled by rarefaction waves, and samples obtained through a quick‐opening check valve are analyzed by gas chromatography. The effect of nitrogen on hydrocarbon pyrolysis appears to be negligible below about 2000°K. At higher temperatures, vibrationally excited nitrogen molecules react with free radicals and produce hydrogen cyanide. Activation energies in the range 23 to 54 Kcal/mole are calculated for the formation of hydrogen cyanide.
Zeta potential measurements of fibres. D‐C. Streaming current method
Authors: Chang M. Y. , Robertson A. A. 
Published: March 2009

AbstractStreaming current techniques have been extensively used in measurements of zeta‐potential, ζ, at the solid/liquid interface of capillary systems. In the case of porous, swelling and deformable materials, the application becomes less certain because of the complex geometry of the flow paths and interactions of neighboring electric double layers. The applicability of the equations developed by Goring, Biefer and Mason to papermaking fibres in various electrolytes is examined and found inadequate. An exponential form of the concentration function in the streaming current equation is proposed, IηL/pD = (Aζ/4π) exp(–Bc), and its reliability in evaluating ζ, is demonstrated. Factors affecting the parameter B are discussed.
The enthalpy of simple, dense fluid mixtures
Authors: Orentlicher M. , Pravsnitz J. M. 
Published: March 2009

AbstractUpon using relations suggested by the statistical theory of dense fluids, a method is developed for calculating the enthalpies of simple fluid mixtures at conditions in the neighborhood of the critical. The method is suitable for calculations using an electronic computer and appears to give good results for mixtures of simple nonpolar gases and liquids at low temperatures.
On the mechanism of bubble formation in a fluidized bed
Authors: Ruckenstein E. , Muntean O. 
Published: March 2009

AbstractA mechanism of bubble formation in a nonhomogeneous fluidized bed, based on instability theory, is suggested. In this mechanism it is assumed that the “bubbles” are formed at the bottom of the bed by the growth of prominences appearing because of the instability to perturbations of the lower surface of the bed. A bubble breaks off when the volume of the prominence becomes sufficiently large so that the buoyant force equals the sum of the bed resistance opposing its growth and the inertial forces. An equation for the diameter of the departing bubble is established.
Settling length for turbulent flow of air in an annulus
Authors: Nicol A. A. , Medwell J. O. , Goel R. K. 
Published: March 2009

AbstractThe settling length, or distance downstream from the entrance required for the development of the velocity profile, has been determined for four square entrance sectioned annuli, with diameter ratios of 0.2, 0.3, 0.5 and 0.7. Using air, a Reynolds number range of 5,000 to 50,000 was covered, and correlations have been obtained relating the settling length, equivalent diameter, Reynolds number and diameter ratio.The expression L/De = 0.795 Re374(D1/D2)−0.60 correlated the data for Reynolds numbers lower than 22,000 and for Reynolds numbers greater than this the relation was L/De = 15.96 Re.077(D1/D2)−624.
Non‐newtonian flow through open channels
Authors: Kozicki William , Tiu Carlos 
Published: March 2009

AbstractA general method is proposed for prediction of the flow rate and maximum velocity in the isothermal, steady, uniform, laminar flow of any incompressible, time‐independent non‐Newtonian fluid in straight open channels of arbitrary cross section. The method requires only a knowledge of two geometric coefficients and a function of shear stress, used to characterize the behavior of the fluid model. The slip effect at the solid boundary has been taken into consideration. Numerical values of the geometric parameters have been determined for flow through an inclined plane of infinite width, semi‐circular, semi‐elliptical, rectangular, and 90° and 60° symmetric triangular open channels. Applications have been made to various non‐Newtonian fluid models such as the power‐law, Bingham, Ellis, Meter and the Reiner‐Rivlin general model. Numerical examples are presented.A generalization of the Fanning friction factor — Reynolds number is also presented. The problem of determining the point of transition from laminar to turbulent flow in the general case is examined, as is the problem of prediction of the friction factor in turbulent flow.
The free‐settling of solid cylindrical particles in the turbulent regime
Authors: Isaacs Jack L. , Thodos George 
Published: March 2009

AbstractExperimental measurements have been conducted to establish a correlation for the settling velocities of cylindrical particles whose length to diameter ratios varied from 10 to 1/10 and Reynolds numbers between 200 and 60,000. It was found that separate correlations exist for cylinders of L/D > 1.0 and for L/D < 1.0. These relationships are expressed analytically and were found to be independent of the Reynolds number. In addition, a qualitative description of the motion generated by the particle during settling has been discussed for cylinder of L/D less than, equal to, and greater than one.
Direct contact condensation of steam in a packed column with immiscible heat transfer agents
Authors: Rai V. C. , Pinder K. L. 
Published: March 2009

AbstractSteam was condensed in a four inch inside diameter column packed with three‐eighth inch ceramic Raschig rings using Aroclor 1242 and 1248 as co‐current heat transfer agents. The packing heights used for condensing the steam were estimated from the liquid temperature profile in the column. From this value and the liquid temperatures the height of a transfer unit for condensation (HCU) was calculated. The HCU was found to be strongly affected by the mean heat transfer medium viscosity and by the flow rate of the liquid. Two empirical equations have been developed to describe the results of this study. Both are of the form
The Heated Surface Probe for Measuring Shear Stress at the Wall in Laminar Boundary Layers
Authors: Rotem Zeev 
Published: March 2009

AbstractA heated‐surface instrument for the measurement of wall shear‐stress was apparently first used by Ludwieg (2). Its main advantages over the more common Stanton tube is the comparatively very minor disturbance of the flow, even within the wall boundary layer, caused by the instrument, and its high sensitivity. The present paper describes modifications to Ludwieg's original probe, its use with a masstransfer process, and gives a more reliable analysis of its performance.
Heat and mass transfer to spheres in high‐temperature surroundings
Authors: Narasimhan C. , Gauvin W. H. 
Published: March 2009

AbstractAn experimental investigation of the combined natural and forced convective effects was carried out which involved the measurement of the rate of evaporation of water from porous stationary spheres (1/4, 3/8 and 1/2‐in. in diameter) under steady conditions in an electrically‐heated stainless steel chamber. The spheres were suspended in a stream of super‐heated steam at atmospheres ranging from 50 to 1000°K. Both the opposing and aiding flow cases were investigated. The Reynolds number varied from 0 to 1489 and the turbulence intensity was less than 1%. The parameter [(Gr)/(Re2)] was found to be of fundamental importance in correlating the results. The rates of heat transfer in the mixed flow region for the opposing flow case was higher than for aiding flow. The transition between the two mechanisms was found to be gradual but very complex in the case of opposing flow.
Analysis of some random blending processes
Authors: Krambeck F. J. , Shinnar R. , Katz S. 
Published: March 2009

AbstractA common problem in the design of mixing and blending equipment is the estimation of the size of the equipment needed to achieve a certain specification. If the statistical properties of the non‐uniformities in the production lots to be blended are known one can calculate by known methods (1) the reduction in the variance of the product properties. Specifications however are normally given not in terms of a variance but in terms of limits. These can be estimated from the variance by assuming a Gaussian distribution. In this paper a method is discussed which allows one to calculate these limits directly for some blending problems in which the source of the nonuniformity is due to the production of an off‐grade lot. This not only allows more accurate design procedures, but also gives some insights as to the magnitude of the error made by assuming a Gaussian distribution.
Direct contact heat transfer between two immiscible liquids during vaporization: Part II: Total evaporation time
Authors: Prakash C. B. , Pinder K. L. 
Published: March 2009

AbstractA dilatometric technique was used to determine the total evaporation time of individual drops of furan, isopentane and cyclopentane as they rose in water.The values of total evaporation time were predicted reasonably well for each system by a different equation than was used to correlate the evaporative data for the initial 10% of the evaporative process as reported in Part I of this study. The total evaporation time data were also compared with the correlations given by Klipstein (1), by Sideman and Taitel (2) and with the correlation which was found by the authors to best fit the total evaporative data for the three systems.In agreement with Klipstein (1), the correlation for the overall heat transfer coefficient was found to be one of the form, qA = Cd12.0δt.The rate of rise of an evaporating drop for the conditions used in this study was found to be nearly equal to the instantaneous terminal velocity.
On the derivation and application of a new vapor pressure equation
Authors: Narsimhan G. 
Published: March 2009

AbstractStarting from the Clapeyron equation and making use of the equivalent expression for the reference state for latent heat of vaporization of pure liquids, namely at 0°K., a new vapor pressure equation is derived as follows:

χ(Tr) has been tabulated for Tr values in the range 0.50 < Tr <0.99 after programming on an IBM 1620 computer. The new vapor pressure equation has been tested with a variety of liquids both polar and non‐polar, and found to predict vapor pressure data in the orthobaric range with an average error of ± 1.90% and maximum error of ± 3.20%.A significant outcome of this investigation is the identification of Riedel's factor αo and Pitzer's acentric factor ω These have been shown to be functions of critical properties and reduced boiling point.