bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: SBA‐15‐Functionalized Sulfonic Acid Confined Acidic Ionic Liquid: A Powerful and Water‐Tolerant Catalyst for Solvent‐Free Esterifications.
Authors: Karimi Babak , Vafaeezadeh Majid 
Published: June 2012

AbstractIncorporating the hydrophobic Broensted acid ionic liquid [C8‐mim]HSO4 inside the nanospaces of SBA‐15 functionalized propylsulfuric acid leads to a hydrophobic super Broensted acid which shows excellent catalytic performance in the direct esterification of alcohols and carboxylic acids at ambient temperature.
ChemInform Abstract: Amberlyst‐15 as a Recyclable Heterogeneous Catalyst for Synthesis of N‐tert‐Butylamides via Ritter‐Type Reaction.
Authors: Mokhtary Masoud , Goodarzi Gholamreza 
Published: June 2012

AbstractEster (II) can be used for the formation of various amides from aliphatic and aromatic nitriles.
ChemInform Abstract: Gold‐Catalyzed Oxyarylation of Styrenes and Mono‐ and gem‐Disubstituted Olefins Facilitated by an Iodine(III) Oxidant.
Authors: Ball Liam T. , Lloyd‐Jones Guy C. , Russell Christopher A. 
Published: June 2012

AbstractA new iodine(III) reagent is used as the oxidant for gold‐catalyzed oxyarylation reactions of various olefins.
ChemInform Abstract: One‐Pot Synthesis of Telluroketene Acetals and Haloketene Acetals Using sp2 Geminated Hetero Organobismetallic Intermediates.
Authors: Guerrero Palimecio G. Jr. , de Oliveira Paulo R. , Baroni Adriano C. M. , Marques Francisco A. , Labes Ricardo , Dabdoub Miguel J. 
Published: June 2012

AbstractThe 1,1,‐bismetallic precursors are prepared according to a literature procedure.
ChemInform Abstract: A Generalized Approach for Iron Catalyzed Chemo‐ and Regioselective Formation of anti‐Markovnikov Acetals from Styrene Derivatives.
Authors: Chowdhury Abhishek Dutta , Lahiri Goutam Kumar 
Published: June 2012

AbstractPh‐I(O‐Ac)2 in the presence of catalytic amounts of Fe(BF4)2 and pyridine‐2,6‐dicarboxylic acid efficiently and selectively promotes the transformation of styrenes into anti‐Markovnikov dialkyl acetals under mild conditions.
ChemInform Abstract: Synthesis of 2‐(1‐Aryl‐2‐nitroethyl)‐3‐arylaminoacrylates via Domino Reaction of Arylamines, Methyl Propiolate, and Nitrostyrenes.
Authors: Sun Jing , Sun Yan , Gao Hong , Yan Chao‐Guo 
Published: June 2012

AbstractThe reaction offers an efficient stereoselective protocol for the preparation of highly functionalized subunits of type (IV).
ChemInform Abstract: Synthesis of Difluoromethyl‐Containing α‐Acyloxycarboxamide Derivatives Through a Passerini Reaction and Desulfonylation.
Authors: Wu Jingjing , Zhao Wenwen , Cao Song 
Published: June 2012

AbstractDesulfuration of amides (IV), obtained by Passerini reaction of phenylsulfanyl‐protected isonitrile (I), proceeds efficiently via the corresponding sulfones (V).
ChemInform Abstract: N‐Methyl‐N‐(2‐phenylethenyl)trifluoromethanesulfonamide.
Authors: Shainyan B. A. , Ushakova I. V. 
Published: June 2012

AbstractTitle compound (V), the first representative of an N‐alkenyl‐substituted trifluoromethanesulfonamide derivative, is obtained in three steps starting from N‐(2‐phenylethyl)‐trifluoromethanesulfonamide (I).
ChemInform Abstract: Extrusion of CO from Aryl Ketones: Rhodium(I)‐Catalyzed C—C Bond Cleavage Directed by a Pyridine Group.
Authors: Lei Zhi‐Quan , Li Hu , Li Yang , Zhang Xi‐Sha , Chen Kang , Wang Xin , Sun Jian , Shi Zhang‐Jie 
Published: June 2012

AbstractAn anchimeric assistance of an N‐containing directing group, generally 2‐pyridyl is critical for the success of the double C—C cleavage process.
ChemInform Abstract: An Efficient Synthesis of 2‐Aryl‐1,4‐diketones via Hydroacylation of Enones.
Authors: Reddy P. Lakshmi , Kumar K. Praveen , Satyanarayana S. , Narender R. , Reddy B. V. Subba 
Published: June 2012

AbstractSNB is found to be the most efficient catalyst component.
ChemInform Abstract: Application of Nickel Complexes Modified by Tridentate O,N,O′‐Ligands as Precatalysts in Nickel‐Catalyzed C(sp2)—C(sp3) Bond Formations.
Authors: Someya Chika I. , Inoue Shigeyoshi , Krackl Sebastian , Irran Elisabeth , Enthaler Stephan 
Published: June 2012

AbstractNew Ni catalysts containing highly flexible hexafluoroacetylacetonate‐based ligands are prepared and tested in the coupling reaction of benzylzinc bromide (I) with aryl halides (II) and (IV).
ChemInform Abstract: Synthesis and Antimicrobial Evaluation of Some New Cyclooctanones and Cyclooctane‐Based Heterocycles.
Authors: Ali Korany A. , Hosni Hanaa M. , Ragab Eman A. , Abd El‐Moez Sherein I. 
Published: June 2012

AbstractA variety of new aminomethylenecyclooctane derivatives and cyclooctane‐based heterocycles with pyrazole, isoxazole, pyrimidine, pyrazolopyrimidine, triazolopyrimidine, and imidazopyrimidine rings is synthesized via reactions of cyclooctanone (III) with appropriate nitrogen nucleophiles.
ChemInform Abstract: Catalytic C—H Arylation of Unactivated Heteroaromatics with Aryl Halides by Cobalt Porphyrin.
Authors: Qian Ying Ying , Wong Ka Lai , Zhang Meng Wen , Kwok Tsz Yiu , To Ching Tat , Chan Kin Shing 
Published: June 2012

AbstractThe cobalt porphyrin catalyzed synthesis of heterobiaryls is proposed to proceed through a homolytic aromatic substitution.
ChemInform Abstract: Mild Synthetic Approach to Novel Indole‐1‐carbinols and Preliminary Evaluation of Their Cytotoxicity in Hepatocarcinoma Cells.
Authors: Zedda Gloria , Simbula Gabriella , Begala Michela , Pibiri Monica , Floris Costantino , Casu Mariano , Casu Laura , Tocco Graziella 
Published: June 2012

AbstractThe title compounds (III) and (V) are obtained in an one‐pot solvent‐free reaction of indoles with paraformaldehyde in the presence of an excess of CaO, MgO, ZnO, or TiO2.
ChemInform Abstract: Silica Sulfuric Acid, an Efficient and Recyclable Solid Acid Catalyst for the Synthesis of 4,4′‐(Arylmethylene)bis(1H‐pyrazol‐5‐ols).
Authors: Niknam Khodabakhsh , Mirzaee Salimeh 
Published: June 2012

AbstractThe catalyst can be reused 8 times without appreciable loss in activity.
ChemInform Abstract: Synthesis of Optically Active Oxazoline Derivatives via Catalytic Asymmetric Desymmetrization of 1,3‐Diols.
Authors: Tsuda Yutaro , Kuriyama Masami , Onomura Osamu 
Published: June 2012

AbstractThe procedure is applicable to various amino‐1,3‐diols tolerating (hetero)aryl substituents bearing electron‐donating as well as electron‐withdrawing groups, and moieties.
ChemInform Abstract: Synthesis of Some New S‐Alkylated 1,2,4‐Triazoles, Their Mannich Bases and Their Biological Activities.
Authors: Alam Mohammad Mahboob , Nazreen Syed , Haider Saqlain , Shafi Syed , Yar Mohammad Shahar , Hamid Hinna , Alam Mohammad Sarwar 
Published: June 2012

AbstractA variety of new S‐alkylated triazoles (IX) (19 examples) and related Mannich bases (XII) are synthesized and evaluated for their pharmacological activities.
ChemInform Abstract: Unusual Cu(I)‐Catalyzed 1,3‐Dipolar Cycloaddition of Acetylenic Amides: Formation of Bistriazoles.
Authors: Kwon Mihyun , Jang Yujin , Yoon Sunyoung , Yang Dongsik , Jeon Heung Bae 
Published: June 2012

AbstractThe attempt to prepare exclusively triazoles (III) in the presence of (iPr2)N‐Et and CuI in DMF fails.
ChemInform Abstract: Amine‐Catalyzed Formal [3 + 3] Annulations of 2‐(Acetoxymethyl)buta‐2,3‐dienoate with Sulfur Ylides: Synthesis of 4H‐Pyrans Bearing a Vinyl Sulfide Group.
Authors: Li Kun , Hu Jian , Liu Hui , Tong Xiaofeng 
Published: June 2012

AbstractA DABCO‐catalyzed annulation of allenoate (I) and ketone‐stabilized ylides (II), (IV), and (VI), in which the sulfur atom of the ylide is transferred into the resulting 4H‐pyran is reported.
ChemInform Abstract: Cu/SiO2‐Catalyzed One‐Pot Synthesis of 12‐Aryl‐8,9,10,12‐tetrahydrobenzo[α]xanthen‐11‐ones under Solvent‐Free Conditions.
Authors: Oskooie Hossein A. , Heravi Majid M. , Karimi Narges , Kohansal Golnaz 
Published: June 2012

AbstractCu—SiO2 promotes the three‐component reaction of aromatic aldehydes, β‐naphthol, and dimedone to give title compounds of type (IV).
ChemInform Abstract: One‐Pot Efficient Green Synthesis of Spirooxindole‐Annulated Thiopyran Derivatives via Knoevenagel Condensation Followed by Michael Addition.
Authors: Majumdar K. C. , Ponra Sudipta , Nandi Raj Kumar 
Published: June 2012

AbstractThe three‐component reaction affords the title compounds (IV) in a short reaction time.
ChemInform Abstract: Simple, Three‐Component, Highly Efficient Green Synthesis of Thiazolo[3,2‐a]pyridine Derivatives under Neat Conditions.
Authors: Mekheimer Ramadan Ahmed , Hilmy Noha Mohamed , Abdel Hameed Afaf , Dacrory Sawsan , Sadek Kamal Usef 
Published: June 2012

AbstractChanging the molar ratios, compounds (IV) or (V) become the main product.
ChemInform Abstract: Synthesis of Dihydropyrimidinones via Biginelli Multi‐Component Reaction.
Authors: Narahari Srinivasa Reddy , Reguri Buchi Reddy , Gudaparthi Omprakash , Mukkanti K. 
Published: June 2012

AbstractThe mild conditions can also be applied to cyclic ketones such as tetralone (VIII).
ChemInform Abstract: A New Benzotriazole‐Mediated Stereoflexible Gateway to Hetero‐2,5‐diketopiperazines.
Authors: Monbaliu Jean‐Christophe M. , Hansen Finn K. , Beagle Lucas K. , Panzner Matthew J. , Steel Peter J. , Todadze Ekaterina , Stevens Christian V. , Katritzky Alan R. 
Published: June 2012

AbstractA convenient, versatile, and flexible benzotriazole‐mediated methodology for the synthesis of proline‐containing hetero‐2,5‐diketopiperazines is reported.
ChemInform Abstract: Sodium Cyanoborohydride‐Mediated Direct Conversion of Some Heterocyclic Aldehydes to Esters.
Authors: Goswami Shyamaprosad , Hazra Anita , Goh Jia Hao , Fun Hoong‐Kun 
Published: June 2012

AbstractAn exceptional oxidizing behavior of sodium cyanoborohydride is observed where electron‐withdrawing heterocyclic aldehydes are directly converted to their corresponding esters.
ChemInform Abstract: Stereocontrolled Oxyselenation Studies on 1,4‐Dihydropyridines: Synthesis of trans‐2‐Hydroxy (or Alkoxy) 3‐Phenylseleno‐1,2,3,4‐tetrahydropyridines.
Authors: Kumar Rakesh , Kumar Dhiraj , Prasad Ashok K. 
Published: June 2012

AbstractRegio‐ and diastereoselective oxyselenenylations of 1,4‐dihydropyridines in the presence of water and alcohols, resp., are described.
ChemInform Abstract: Synthesis and Evaluation of Cytotoxic Effects of Novel α‐Methylenelactone Tetracyclic Diterpenoids.
Authors: Zhang Da‐yong , et al. et al. 
Published: June 2012

AbstractCompounds (Ia)—(Ic) show significant cytotoxicity superior to the positive control doxorubicin hydrochloride against MDA‐MB‐231, K562, and HepG2 cell lines.
ChemInform Abstract: Development of a Kilogram‐Scale Synthesis of Salidroside and Its Analogues.
Authors: Shi Tianyao , Chen Hui , Jing Linlin , Liu Xueying , Sun Xiaoli , Jiang Ru 
Published: June 2012

AbstractThe procedure for a pilot‐plant‐scale production of salidroside (III) is described for the first time.
ChemInform Abstract: New Antitumor Compounds from Carya cathayensis.
Authors: Wu Wei , Bi Xiu‐Li , Cao Jia‐Qing , Zhang Kai‐Qing , Zhao Yu‐Qing 
Published: June 2012

AbstractThe new lignan (I), and three new phenolics, carayensin‐A (II), carayensin‐B (III), and carayensin‐C (IV) are isolated from the shells along with 13 known constituents.
ChemInform Abstract: Reversible Interconversion of a Divalent Vanadium Bronze Between δ and β Quasi‐1D Structures.
Authors: Marley Peter M. , Banerjee Sarbajit 
Published: June 2012

Abstractδ‐Ca0.23V2O5·H2O nanowires are prepared hydrothermally from ball‐milled, stoichiometric mixtures of Ca(NO3)2·4H2O or Ca(OAc)2·H2O and V2O (autoclave, water, 250 °C, 72 h).
Continuous Synthesis of Peralkylated Imidazoles and their Transformation into Ionic Liquids with Improved (Electro)Chemical Stabilities
Authors: Maton Cedric , De Vos Nils , Roman Bart I. , Vanecht Evert , Brooks Neil R. , Binnemans Koen , Schaltin Stijn , Fransaer Jan , Stevens Christian V. 
Published: June 2012

AbstractA versatile and efficient method to synthesize tetrasubstituted imidazoles via a one‐pot modified Debus–Radziszewski reaction and their subsequent transformation into the corresponding imidazolium ionic liquids is reported. The tetrasubstituted imidazoles were also synthesized by means of a continuous flow process. This straightforward synthetic procedure allows for a fast and selective synthesis of tetrasubstituted imidazoles on a large scale. The completely substituted imidazolium dicyanamide and bis(trifluoromethylsulfonyl)imide salts were obtained via a metathesis reaction of the imidazolium iodide salts. The melting points and viscosities are of the same order of magnitude as for their non‐substituted analogues. In addition to the superior chemical stability of these novel ionic liquids, which allows them to be applied in strong alkaline media, the improved thermal and electrochemical stabilities of these compounds compared with conventional imidazolium ionic liquids is also demonstrated by thermogravimetrical analysis (TGA) and cyclic voltammetry (CV). Although increased substitution of the ionic liquids does not further increase thermal stability, a definite increase in cathodic stability is observable.
Synthesis of Five‐Membered Cyclic Ethers by Reaction of 1,4‐Diols with Dimethyl Carbonate
Authors: Aricò Fabio , Tundo Pietro , Maranzana Andrea , Tonachini Glauco 
Published: June 2012

AbstractThe reaction of 1,4‐diols with dimethyl carbonate in the presence of a base led to selective and high‐yielding syntheses of related five‐membered cyclic ethers. This synthetic pathway has the potential for a wide range of applications. Distinctive cyclic ethers and industrially relevant compounds were synthesized in quantitative yield. The reaction mechanism for the cyclization was investigated. Notably, the chirality of the starting material was maintained. DFT calculations indicated that the formation of five‐membered cyclic ethers was energetically the most favorable pathway. Typically, the selectivity exhibited by these systems could be rationalized on the basis of hard–soft acid–base theory. Such principles were applicable as far as computed energy barriers were concerned, but in practice cyclization reactions were shown to be entropically driven.
Waste‐Slag Hydrocalumite and Derivatives as Heterogeneous Base Catalysts
Authors: Kuwahara Yasutaka , Tsuji Keita , Ohmichi Tetsutaro , Kamegawa Takashi , Mori Kohsuke , Yamashita Hiromi 
Published: June 2012

AbstractBlast furnace slag (BFS), a high‐volume byproduct resulting from iron‐making processes, can be considered as a low‐cost and abundant precursor for preparing layered double hydroxide (LDH) compounds. Here we demonstrate that a Ca‐based LDH compound (hydrocalumite) synthesized from waste BFS through facile two‐step procedures and its derivatives work as useful heterogeneous base catalysts for multiple chemical reactions including the Knoevenagel condensation, oxidation of alkylaromatics with O2, transesterification, and cycloaddition reaction of epoxides with atmospheric CO2. Structures were verified by using XRD and thermogravimetric analysis. The surface basicity and coordination geometry of the active metal species that substantially affect the catalytic activity were investigated by CO2‐temperature programmed desorption (TPD) and X‐ray absorption fine structure (XAFS) measurements, respectively. These characterization results revealed that the slag‐derived impurity elements, such as Fe, Ti, and Mn, effectively act either as active sites or as catalyst promoters in particular reactions and that the kind of guest counter anion (Cl− or NO3−) also plays a key role for achieving high catalytic efficiencies. In any reaction, the catalyst was easily separated by filtration and recyclable in multiple catalytic runs with retention of its activity and fine selectivity, irrespective of its considerable impurity level. It is believed that the slag‐made hydrocalumite can replace existing LDH catalysts as a low‐cost alternative and potentially contribute to sustainable chemical processes.
NIST/ISAC standardization study: Variability in assignment of intensity values to fluorescence standard beads and in cross calibration of standard beads to hard dyed beads
Authors: Hoffman Robert A. , Wang Lili , Bigos Martin , Nolan John P. 
Published: June 2012

AbstractResults from a standardization study cosponsored by the International Society for Advancement of Cytometry (ISAC) and the US National Institute of Standards and Technology (NIST) are reported. The study evaluated the variability of assigning intensity values to fluorophore standard beads by bead manufacturers and the variability of cross calibrating the standard beads to stained polymer beads (hard‐dyed beads) using different flow cytometers. Hard dyed beads are generally not spectrally matched to the fluorophores used to stain cells, and spectral response varies among flow cytometers. Thus if hard dyed beads are used as fluorescence calibrators, one expects calibration for specific fluorophores (e.g., FITC or PE) to vary among different instruments. Using standard beads surface‐stained with specific fluorophores (FITC, PE, APC, and Pacific Blue™), the study compared the measured intensity of fluorophore standard beads to that of hard dyed beads through cross calibration on 133 different flow cytometers. Using robust CV as a measure of variability, the variation of cross calibrated values was typically 20% or more for a particular hard dyed bead in a specific detection channel. The variation across different instrument models was often greater than the variation within a particular instrument model. As a separate part of the study, NIST and four bead manufacturers used a NIST supplied protocol and calibrated fluorophore solution standards to assign intensity values to the fluorophore beads. Values assigned to the reference beads by different groups varied by orders of magnitude in most cases, reflecting differences in instrumentation used to perform the calibration. The study concluded that the use of any spectrally unmatched hard dyed bead as a general fluorescence calibrator must be verified and characterized for every particular instrument model. Close interaction between bead manufacturers and NIST is recommended to have reliable and uniformly assigned fluorescence standard beads. © 2012 International Society for Advancement of Cytometry
Potentiometric Study of Coated Graphite Electrode and Polymeric Membrane Electrode for the Determination of Sm3+ Ion
Authors: Upadhyay Anjali , Singh A. K. , Jain A. K. , Kumar Gupta Vinod , Bandi Koteswara Rao 
Published: June 2012

AbstractPreliminary studies on the two Schiff bases N2‐((3H‐indol‐3‐yl)methylene)‐6‐phenyl‐1,3,5‐triazine‐2,4‐diamine (L1) and N2,N4‐bis((3H‐indol‐3‐yl)methylene)‐6‐phenyl‐1,3,5‐triazine‐2,4‐diamine (L2) have shown that they can act as Sm3+ selective electrodes. The performances of a polymeric membrane electrode and a coated graphite electrode based on L2 were compared and the CGE proved to be better, as it shows a low detection limit of 1.8×10−8 mol L−1, a Nernstian slope of 19.6±0.4 mV decade−1 of activity with a response time of 11 s in the pH range of 3.0–9.0. The CGE was used to determine Sm3+ in medicinal plants and soil samples. It was also used to determine fluoride ions in mouthwash samples and in toothpaste.
Hybrid ZnO/SWNT Nanostructures Based Gas Sensor
Authors: Hernández Sandra C. , Kakoullis James , Lim Jae Hong , Mubeen Syed , Hangarter Carlos M. , Mulchandani Ashok , Myung Nosang V. 
Published: June 2012

AbstractZinc oxide (ZnO) nanoparticles decorated single walled carbon nanotubes (SWNTs) were electrochemically synthesized where the deposition conditions were systematically explored to tailor the size, density, and microstructure of the ZnO nanoparticles and correlated to the gas sensing performance. Room temperature conductometric detection of various analytes including CO, CO2, NO2, NH3, SO2, H2S with ZnO/SWNT hybrid nanostructures demonstrated uncharacteristic selectivity towards H2S with little to no response for the other analytes examined. Optimal ZnO/SWNTs gas sensor devices showed a significantly increased in H2S sensitivity over unfunctionalized SWNT networks (i.e. 4.96 % per ppmV vs. 0.225 % ppmV) with a lower detection limit in the ppb range. Additionally, the H2S sensing performance was greatly improved by enhancing the crystallinity of ZnO nanoparticles.
Polyaniline‐Modified Silver and Binary Silver‐Cobalt Catalysts for Oxygen Reduction Reaction
Authors: Yi Qingfeng , Song Lihong 
Published: June 2012

AbstractNovel dendrite‐like silver particles were electrodeposited on Ti substrates from a supporting electrolyte‐free 30 mmol L−1 Ag(NH3)2+ solution, to synthesize the den‐Ag/Ti electrode. Binary AgxCoy/Ti electrodes with different Ag:Co atomic ratios were further obtained by electrodeposition of Co particles on the den‐Ag/Ti electrode. Polyaniline (PANI) modified den‐Ag/Ti and AgxCoy/Ti electrodes, PANI(n)‐den‐Ag/Ti and PANI(n)‐AgxCoy/Ti, were also obtained by cyclic voltammetry at different numbers of cycles (n) in acidic and alkaline solutions containing aniline, respectively. All these electrodes exhibit high electroactivity for oxygen reduction reaction (ORR) in alkaline solution and their electroactivities follow the order: PANI(15)‐Ag31Co69/Ti>Ag31Co69/Ti>PANI(20)‐den‐Ag/Ti>den‐Ag/Ti. Among them, PANI(15)‐Ag31Co69/Ti displays the highest electrocatalytic activity for ORR with a much positive onset potential of 0 V (vs. Ag/AgCl) and a high ORR current density of 1.2 mA cm−2 at −0.12 V (vs. Ag/AgCl). The electrocatalysts are electrochemically insensitive to methanol and ethanol oxidation, and, as cathode electrocatalysts of direct alcohol fuel cells, can resist poisoning by the possible alcohol crossover from the anode.
Near‐optimal piecewise linear fits of static pushover capacity curves for equivalent SDOF analysis
Authors: De Luca F. , Vamvatsikos D. , Iervolino I. 
Published: June 2012

SUMMARYThe piecewise linear (‘multilinear’) approximation of realistic force‐deformation capacity curves is investigated for structural systems incorporating generalized plastic, hardening, and negative stiffness behaviors. This fitting process factually links capacity and demand and lies at the core of nonlinear static assessment procedures. Despite codification, the various fitting rules used can produce highly heterogeneous results for the same capacity curve, especially for the highly‐curved backbones resulting from the gradual plasticization or the progressive failures of structural elements. To achieve an improved fit, the error introduced by the approximation is quantified by studying it at the single‐degree‐of‐freedom level, thus avoiding any issues related to multi‐degree‐of‐freedom versus single‐degree‐of‐freedom realizations. Incremental dynamic analysis is employed to enable a direct comparison of the actual backbones versus their candidate piecewise linear approximations in terms of the spectral acceleration capacity for a continuum of limit‐states. In all cases, current code‐based procedures are found to be highly biased wherever widespread significant stiffness changes occur, generally leading to very conservative estimates of performance. The practical rules determined allow, instead, the definition of standardized low‐bias bilinear, trilinear, or quadrilinear approximations, regardless of the details of the capacity curve shape. Copyright © 2012 John Wiley & Sons, Ltd.
Implicit solvers using stabilized mixed approximation
Authors: Liao Qifeng , Silvester David 
Published: June 2012

SUMMARYThis paper concerns a new class of robust and efficient methods for solving the Navier–Stokes equations for unsteady incompressible flow. In previous work we established the effectiveness of an implicit time integrator using a stabilized trapezoid rule with an explicit Adams–Bashforth method for error control. The role of the stability of the spatial approximation on the overall accuracy of the implicit solution algorithm is the primary focus here. In particular, the relationship between spatial stabilization and temporal solution accuracy is assessed computationally for the case of the lowest order conforming mixed approximation. Copyright © 2012 John Wiley & Sons, Ltd.