bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: NEW PROCEDURE FOR 1,2,5‐TRIMETHYL‐4‐PIPERIDONE
Authors: PRALIEV K. D. , BELIKOVA N. A. , ESKAIROV M. E. , SOKOLOV D. V. 
Published: May 2016

AbstractDas Piperidon (IX) ist ein Zwischenprodukt für die analgetisch wirkende Verbindung (X) sowie für eine Reihe von Pflanzenwachstum‐Stimulatoren (SU‐Patente 366844 und 425607).
ChemInform Abstract: 1‐AZA‐ AND 1,9‐DIAZATRIPTYCENES
Authors: QUAST H. , SCHOEN N. + 
Published: May 2016

AbstractDas größtenteils nach bekannter Vorschrift dargestellte überbrückte Anthracen (I) wird über das Enamin mit dem Enon (III) zu dem Diketon (IV) umgesetzt.
ChemInform Abstract: CYCLIC MESO‐IONIC COMPOUNDS. PART 22. MESO‐IONIC DERIVATIVES OF THE IMIDAZO(1,2‐A)PYRIDINIUM SYSTEM AND THE UNEXPECTED SYNTHESIS OF STABLE PYRIDINIUM DINITROMETHYLIDES
Authors: NEWTON C. G. , OLLIS W. D. , WRIGHT D. E. 
Published: May 2016

AbstractIm Hydrolyseprodukt des Imidazopyridins (I) ist die mesoionische Form (II) das klar von der Z‐Hydroxy‐ und der Dihydro‐2‐oxo‐Form bevorzugte Tautomere (UV‐ und IR‐Spektrurn).
ChemInform Abstract: CARBON‐13 NMR SPECTRA OF THE PRODUCTS OF HYDROBORATION OF 1‐ALKYNES AND OF 1‐HALO‐1‐ALKYNES WITH 9‐BORABICYCLO(3.3.1)NONANE AND WITH DICYCLOHEXYLBORANE. INVESTIGATION OF THE THERMAL DECOMPOSITION OF SOME (1‐HALO‐1‐ALKENYL)DICYCLOHEXYLBORANES
Authors: BLUE C. D. , NELSON D. J. 
Published: May 2016

AbstractZahlreiche Alkine oder 1‐Halogen‐1‐alkine werden mit Dicyclohexylboran und mit 9‐Borabicyclo[3.3.1]nonan in entsprechende Hydroborierungsprodukte wie (I) bis (IV) übergeführt deren NMR‐Daten untersucht werden.
ChemInform Abstract: Reexamination of the Reaction of Triethyl Phosphite with o‐Hydroxybenzyl Alcohol.
Authors: CHASAR D. W. 
Published: May 2016

AbstractIm Gegensatz zu früheren Angaben reagiert o‐Hydroxy‐benzylalkohol (I) mit Triethylphosphit (II) über die Zwischenstufe (III) zum cyclischen Phosphonat (IV).
ChemInform Abstract: CHROMIUM(III) COMPLEXES OF MULTIDENTATE PHOSPHINES, ARSINES, AND THIO ETHERS. CRYSTAL AND MOLECULAR STRUCTURE OF THE COMPLEX MER‐TRICHLORO(TRIS(2‐DIPHENYLPHOSPHINOETHYL)PHOSPHINE)CHROMIUM(III)
Authors: GRAY L. R. , HALE A. L. , LEVASON W. , MCCULLOUGH F. P. , WEBSTER M. 
Published: May 2016

AbstractDie I : I‐molare Umsetzung der Trihalogeno‐TH F‐Cr(III)‐Komplexe (I) (X′: CI, Br, I) oder des mit AgF aus dem Trichloro‐Komplex (I) (X′ t" Cl) gebildeten Trifluoro‐Analogen mit den aufgeführten Liganden ergibt die I : I‐Komplexe mit mer‐ Konfiguration (IIa) und (IIc) oder fac‐Konfiguration (IIb) und (lld) sowie die Triiodo‐Komplexe (IIe) mit nicht identifizierter Ligandanordnung.
ChemInform Abstract: PROPERTIES OF NOVEL IRON‐SULFUR PROTEINS FORMED BY THE INTRODUCTION OF A SYNTHETIC IRON‐SULFUR CLUSTER INTO BOVINE SERUM ALBUMIN AND BOVINE INSULIN
Authors: ODELL B. , GEARY P. J. 
Published: May 2016

AbstractDie Wechselwirkung der im Titel genannten Proteine mit dem wasserlöslichen Cluster (I) werden untersucht.
ChemInform Abstract: SYNTHESIS AND CHEMICAL CHARACTERIZATION OF THE NEW ANIONS (RH3(μ3‐E)2(CO)6)‐ (E = SULFUR OR SELENIUM). CRYSTAL AND MOLECULAR STRUCTURES OF TETRAPHENYLPHOSPHONIUM BIS(μ3‐SULFIDO)‐CYCLO‐TRIS(DICARBONYLRHODATE(I)) AND TETRAMETHYLAMMONIUM BIS(μ3‐SELENIDO)‐CYCLO‐TRIS(DICARBONYLRHODATE(I))
Authors: GALLI D. , GARLASCHELLI L. , CIANI G. , FUMAGALLI A. , MARTINENGO S. , SIRONI A. 
Published: May 2016

AbstractDie Reaktion von Rh4(CO)12 oder Rh6(CO)16, mit [SCN]‐ bzw. [SeCN]‐ in THF bei Rückflußtemp.
ChemInform Abstract: USE OF A NEW PROTECTING GROUP IN AN ATTEMPTED SYNTHESIS OF CYCLOPROPYLDIHYDROXYPHENYLALANINE
Authors: SUZUKI M. , KUMAR S. D. , STAMMER C. H. 
Published: May 2016

AbstractAus dem Benzoylglycin (I) erhält man bei der Kondensation mit den Aldehyden (II) die Oxazolone (III), deren Estergruppe hydrolysiert wird.
ChemInform Abstract: DERIVATIVES OF 6‐DEOXY‐L‐TALOSE AND THE SYNTHESIS OF 6‐DEOXY‐2‐O‐(α‐L‐RHAMNOPYRANOSYL)‐L‐TALOSE
Authors: ASPINALL G. O. , TAKEO K. 
Published: May 2016

AbstractNach dem angegebenen Schema wird aus L‐Rhamnose (I) die ö‐Desoxy‐L‐talose (VI) erhalten.
ChemInform Abstract: SACCHARIDE HYDRAZONES, PART 2. FURTHER STUDIES OF THE HYDRAZINOLYSIS OF 2‐ACETAMIDO‐1‐N‐ACYL‐2‐DEOXY‐β‐D‐GLUCOPYRANOSYLAMINES
Authors: TANG P. W. , WILLIAMS J. M. 
Published: May 2016

AbstractDie Hydrazinolyse von Acetamido‐glycosylamiden unter verschiedenen Bedingungen wird untersucht.
ChemInform Abstract: SYNTHESIS OF CELLOBIOSE, CELLOTRIOSE, CELLOTETRAOSE, AND LACTOSE
Authors: TAKEO K. , OKUSHIO K. , FUKUYAMA K. , KUGE T. 
Published: May 2016

AbstractDie peracetylierten Halogenosen wie (I) oder (V) werden in doppelt bis dreifach molarem Überschuß mit den Monoalkoholen (II) oder (IIIc) umgesetzt, wobei sich in hohen Ausbeuten die entsprechenden Di‐ und Oligosaccharide bilden.
ChemInform Abstract: Synthesis of Imidazo‐fused Bridgehead‐nitrogen C‐Nucleosides via Dehydrative Coupling Reactions of 2,5‐Anhydro‐3,4,6‐tri‐O‐benzoyl‐D‐allonic Acid.
Authors: KNUTSEN L. J. S. , JUDKINS B. D. , MITCHELL W. L. , NEWTON R. F. , SCOPES D. I. C. 
Published: May 2016

AbstractUmsetzung der Säure (IV) mit den Aminen (I)‐(III) liefert die entsprechenden Amide (V), die sich zu den neuartigen Nucleosiden (VI) bzw. (VII) bzw. deren debenzoylierten Produkten (VIII) bzw. (IX) cyclisieren lassen.
ChemInform Abstract: FURTHER IMPROVEMENTS OF OLIGODEOXYRIBONUCLEOTIDES SYNTHESIS: SYNTHESIS OF TETRADEOXYADENYLATE ON A NEW SILICA GEL SUPPORT USING N6‐PHTHALOYLDEOXYADENOSINE
Authors: KUME A. , SEKINE M. , HATA T. 
Published: May 2016

AbstractDurch Umsetzung von Kieselgel mit γ‐Aminopropyl‐triethoxysilan (I) entsteht ein modifiziertes Kieselgel mit einer Aminoalkylkette, die durch weitere Umsetzungen, wie im Formelschema skizziert, noch verlängert werden kann.
ChemInform Abstract: SYNTHESIS OF 1‐(5‐DEOXY‐β‐D‐ARABINO‐HEXAFURANOSYL)CYTOSINE
Authors: IWAKAWA M. , MARTIN O. R. , SZAREK W. A. 
Published: May 2016

AbstractDas Allosederivat (Ia) wird über das Tritosylat (Ib) und anschließende reduktive Eliminierung in den ungesättigten Zucker (II) übergeführt.
ChemInform Abstract: NEW STEREOCONTROLLED APPROACH TO SOME INSECT PHEROMONES VIA SILICON‐DIRECTED BECKMANN FRAGMENTATION
Authors: NISHIYAMA H. , SAKUTA K. , ITOH K. 
Published: May 2016

AbstractAus Cyclopentenon (I) entsteht das Silylderivat (II) nach bekannten Methoden, das nach Hydrierung zu (IIIa) über das Oxim‐acetat (IIIb) zum Nitril (IV) gespalten und dann zum Pheromon (V) reduziert wird.
ChemInform Abstract: Epitaxial Stabilization Between Intermetallic and Carbide Domains in the Structures of Mn16SiC4 and Mn17Si2C4.
Authors: Fredrickson Rie T. , Guo Yiming , Fredrickson Daniel C. 
Published: May 2016

AbstractThe title compounds are prepared from stoichiometric mixtures of the elements (1000—1100 °C, 5—7 d) and characterized by powder and single crystal XRD, magnetic measurements, and DFT calculations.
ChemInform Abstract: Thermal, Structural, Optical, Dielectric and Barocaloric Properties at Ferroelastic Phase Transition in Trigonal (NH4)2SnF6: A New Look at the Old Compound.
Authors: Flerov Igor N. , Kartashev Andrey V. , Gorev Mikhail V. , Bogdanov Evgeniy V. , Mel'nikova Svetlana V. , Molokeev Maxim S. , Pogoreltsev Evgeniy I. , Laptash Natalia M. 
Published: May 2016

Abstract(NH4)2SnF6 is prepared by oxidation and complexation of Sn using HNO3 (56%) and HF (40%) followed by adjusting pH 2 and subsequent evaporation.
ChemInform Abstract: Structure and Properties of Ir‐Containing Oxides with Large Spin—Orbit Coupling: Ba2In2‐xIrxO5+δ.
Authors: Flynn Joshua , Li Jun , Sleight Arthur W. , Ramirez Arthur P. , Subramanian M. A. 
Published: May 2016

AbstractThe title solid solution series with x = 0—1.4, and 2 is synthesized from stoichiometric mixtures of BaCO3, IrO2, and In2O3 (1200 °C, 36 h).
ChemInform Abstract: Thermal Expansion and Second Harmonic Generation Response of the Tungsten Bronze Pb2AgNb5O15.
Authors: Lin Zheshuai , et al.  
Published: May 2016

AbstractThe title compound is prepared by solid state reaction of PbO, Ag2CO3, and Nb2O5 and characterized by powder XRD, neutron diffraction, TEM, and second harmonic generation measurements.
ChemInform Abstract: Synthesis and Characterization of CsSrCO3F — A Beryllium‐Free New Deep‐Ultraviolet Nonlinear Optical Material.
Authors: Li Qingfei , Zou Guohong , Lin Chensheng , Ye Ning 
Published: May 2016

AbstractThe new non‐centrosymmetric compound of title is prepared by repeated heating of stoichiometric quantities of Cs2CO3, SrF2, and SrCO3 (550 °C, 120 h).
ChemInform Abstract: Synthesis of Vanadium‐Incorporated, Polyoxometalate‐Based Open Frameworks and Their Applications for Cathode‐Active Materials.
Authors: Zhang Zhenxin , Yoshikawa Hirofumi , Zhang Zhongyue , Murayama Toru , Sadakane Masahiro , Inoue Yasunori , Ueda Wataru , Awaga Kunio , Hara Michikazu 
Published: May 2016

AbstractA series of V‐incorporated ε‐Keggin polyoxometalate‐based open framework materials, (NH4)1.8H10 [Zn3Mo11.9V0.1O40] ·6.5H2O, (NH4)1.8H10 [Zn2.7Mo11.6V0.7O40] ·6.5H2O, (NH4)1.8H7 [Zn2.6Mo11.2V1.2O40] ·6H2O, (NH4)2H14 [Mn2.4Mo12V0.2O40] ·5H2O, (NH4)2.2H12 [Mn2.2Mo11.9V0.7O40] ·5H2O, and (NH4)2.2H9 [Mn2.2Mo11.6V1.0O40] ·5H2O, is hydrothermally synthesized from aqueous mixtures of (NH4)6Mo7O24, NH4VO3, Mo, and ZnCl2 or MnO (autoclave, 448 K, 24 h, 53—71% yield of Zn‐containing compounds, 35—43% yield of Mn‐containing compounds).
ChemInform Abstract: Molecular Oxygen Modulated Luminescence of an Octahedrohexamolybdenum Iodide Cluster Having Six Apical Thiocyanate Ligands.
Authors: Riehl Lara , Stroebele Markus , Enseling David , Juestel Thomas , Meyer H.‐Juergen 
Published: May 2016

AbstractThe new compound (VI) is characterized by single crystal XRD and luminescence measurements.
ChemInform Abstract: Lewis Acid‐Catalyzed Ring‐Opening Addition Reactions of Alcohols to Vinylcyclopropane.
Authors: Matsuoka Shin‐ichi , Numata Kazuki , Suzuki Masato 
Published: May 2016

AbstractLewis acids such as Sn(O‐Tf)2 catalyze the ring opening 1,5‐addition of aliphatic alcohols to 2‐vinylcyclopropanedicarboxylate (I) furnishing regioselectively 4‐alkoxy‐2‐methoxycarbonyl‐5‐hexenoates.
ChemInform Abstract: Brook Rearrangement as a Trigger for the Ring Opening of Strained Carbocycles.
Authors: Zhang Fa‐Guang , Eppe Guillaume , Marek Ilan 
Published: May 2016

AbstractThe diastereoselective copper‐catalyzed carbomagnesiation of cyclopropenyl amides (I) followed by reaction with acylsilanes gives functionalized hydrosilanes (IV) with high diastereoselectivity.
ChemInform Abstract: Expanding the Scope of Hypervalent Iodine Reagents for Perfluoroalkylation: From Trifluoromethyl to Functionalized Perfluoroethyl.
Authors: Matousek Vaclav , Vaclavik Jiri , Hajek Peter , Charpentier Julie , Blastik Zsofia E. , Pietrasiak Ewa , Budinska Alena , Togni Antonio , Beier Petr 
Published: May 2016

AbstractA series of new hypervalent iodine reagents based on the 3,3‐dimethyl‐1,2‐benziodoxole and 1,2‐benziodoxol‐3‐(1H)‐one scaffolds is prepared and utilized in perfluoroalkylation reactions.
ChemInform Abstract: Regioselective Asymmetric Allylic Alkylation Reaction of α‐Cyanoacetates Catalyzed by a Heterobimetallic Platina‐/Palladacycle.
Authors: Weiss Marcel , Holz Julia , Peters Rene 
Published: May 2016

AbstractThe allylation of α‐cyanoacetates in the presence of a heterobimetallic Pt(II)/Pd(II) catalyst is studied.
ChemInform Abstract: A One‐Pot Process for the Microwave‐Assisted Synthesis of 7‐Substituted Pyrazolo[1,5‐a]pyrimidine.
Authors: Bassoude Ibtissam , Tber Zahira , Essassi El Mokhtar , Guillaumet Gerald , Berteina‐Raboin Sabine 
Published: May 2016

AbstractThis one‐pot, two‐step protocol proceeds via Pd‐catalyzed direct CH‐arylation followed by a saponification—decarboxylation reaction.
ChemInform Abstract: Bifunctional Furfuryl Cations Strategy: Three‐Component Synthesis of Enamidyl Triazoles.
Authors: Yang Hengtuo , Gou Jing , Guo Jiawei , Duan Dongyu , Zhao Yu‐Ming , Yu Binxun , Gao Ziwei 
Published: May 2016

AbstractA three‐component reaction based on a furan platform strategy is accomplished under stoichiometric Lewis acid promotion.
ChemInform Abstract: Molybdenum Pentachloride Mediated Synthesis of Spirocyclic Compounds by Intramolecular Oxidative Coupling.
Authors: Schubert Moritz , Wehming Kathrin , Kehl Anton , Nieger Martin , Schnakenburg Gregor , Froehlich Roland , Schollmeyer Dieter , Waldvogel Siegfried R. 
Published: May 2016

AbstractOxidative treatment of 4‐methoxy substituted 2‐aryl cinnamates leads to an dealkylative C—C coupling and gives access to spirocyclic compounds.
ChemInform Abstract: First Catalyzed Hydration of Haloalkynes by a Recyclable Catalytic System.
Authors: Zou Huaxu , He Weibao , Dong Qizhi , Wang Ruijia , Yi Niannian , Jiang Jun , Pen Dongming , He Weimin 
Published: May 2016

AbstractThe Cu(OAc)2/TFA system can be recycled and reused for at least five times without loss of activity.
ChemInform Abstract: Metal‐Free Oxidative Cross Esterification of Alcohols via Acyl Chloride Formation.
Authors: Gaspa Silvia , Porcheddu Andrea , De Luca Lidia 
Published: May 2016

AbstractUsing trichloroisocyanuric acid as the oxidant, a broad variety of benzoates are prepared from benzylic alcohols and alkanols as well as phenols via intermediate conversion of the benzylic alcohol into the corresponding benzoyl chloride.
ChemInform Abstract: Mechanochemical Iridium(III)‐Catalyzed C—H Bond Amidation of Benzamides with Sulfonyl Azides under Solvent‐Free Conditions in a Ball Mill.
Authors: Hermann Gary N. , Becker Peter , Bolm Carsten 
Published: May 2016

AbstractThe mechanochemical activation enables the formation of an iridium species that catalyzes the ortho‐selective amidation of benzamides with various sulfonyl azides in excellent yields within short times.
ChemInform Abstract: Combining Visible Light Catalysis and Transfer Hydrogenation for in situ Efficient and Selective Semihydrogenation of Alkynes under Ambient Conditions.
Authors: Zhong Jian‐Ji , Liu Qiang , Wu Cheng‐Juan , Meng Qing‐Yuan , Gao Xue‐Wang , Li Zhi‐Jun , Chen Bin , Tung Chen‐Ho , Wu Li‐Zhu 
Published: May 2016

AbstractThe title semihydrogenation gives E‐alkenes for diaryl substituted alkynes and Z‐alkenes for aryl alkyl or dialkyl substituted alkynes.
ChemInform Abstract: Greener Paal—Knorr Pyrrole Synthesis by Mechanical Activation.
Authors: Akelis Liudvikas , Rousseau Jolanta , Juskenas Robertas , Dodonova Jelena , Rousseau Cyril , Menuel Stephane , Prevost Dominique , Tumkevicius Sigitas , Monflier Eric , Hapiot Frederic 
Published: May 2016

AbstractN‐substituted pyrroles are synthesized by the Paal—Knorr reaction using mechanical activation in a ball mill.
ChemInform Abstract: Selective Ruthenium‐Catalyzed Reductive Alkoxylation and Amination of Cyclic Imides.
Authors: Cabrero‐Antonino Jose R. , Sorribes Ivan , Junge Kathrin , Beller Matthias 
Published: May 2016

AbstractThe reductive mono‐alkoxylation of N‐substituted phthalimides with hydrogen as reducing agent is achieved in the presence of a catalyst system consisting of Ru(acac)3, Triphos, and methanesulfonic acid.
ChemInform Abstract: Lewis Acid Mediated Vinylogous Additions of Enol Nucleophiles into an α,β‐Unsaturated Platinum Carbene.
Authors: Allegretti Paul A. , Huynh Khoi , Ozumerzifon Tarik J. , Ferreira Eric M. 
Published: May 2016

AbstractThe title reaction provides access to benzofuran and a broad range of indole derivatives.
ChemInform Abstract: Regioselective ortho Alkylation of Nitro Indole, Carbazole, Benzothiophene and Benzofuran.
Authors: Lamont Scott G. , Donald Craig S. , Lyman Feron J. , Groombridge Sam D. 
Published: May 2016

AbstractThis novel regioselective method allows the introduction of alkyl substituents into the ortho position of nitro groups by addition of Grignards reagents and subsequent oxidation.
ChemInform Abstract: Atmospheric Pressure of CO2 as Protecting Reagent and Reactant: Efficient Synthesis of Oxazolidin‐2‐ones with Carbamate Salts, Aldehydes and Alkynes.
Authors: Yu Bing , Cheng Bin‐Bin , Liu Wei‐Qi , Li Wei , Wang Shan‐Shan , Cao Jie , Hu Chang‐Wen 
Published: May 2016

AbstractThe carbamate salt starting materials are prepared by bubbling CO2 through the corresponding liquid amines.
ChemInform Abstract: One‐Pot Synthesis of N‐Aryl 1,4‐Dihydropyridine Derivatives and Their Biological Activities.
Authors: Dhinakaran Isaivani , Padmini Vediappen , Bhuvanesh Nattamai 
Published: May 2016

AbstractA new series of polysubstituted dihydropyridine derivatives (V) (15 examples) is synthesized using a multicomponent reaction strategy.
ChemInform Abstract: Hydroxyapatite Nanoparticles (HAP NPs): A Green and Efficient Heterogeneous Catalyst for Three‐Component One‐Pot Synthesis of 2,3‐Dihydroquinazolin‐4(1H)‐one Derivatives in Aqueous Media.
Authors: Razavi Nasrin , Akhlaghinia Batool 
Published: May 2016

AbstractThe nanocatalyst is reusable up to six times without significant loss of catalytic activity.
ChemInform Abstract: Selective Silylative Reduction of Pyridines Leading to Structurally Diverse Azacyclic Compounds with the Formation of sp3 C—Si Bonds.
Authors: Gandhamsetty Narasimhulu , Park Sehoon , Chang Sukbok 
Published: May 2016

AbstractA scalable, metal‐free dearomatization of substituted pyridines is described, and depending on the substituents′ position structurally diverse azacycles are formed selectively.
ChemInform Abstract: ortho‐Trialkylstannyl Arylphosphanes by C—P and C—Sn Bond Formation in Arynes.
Authors: Li Yuanming , Chakrabarty Shyamal , Mueck‐Lichtenfeld Christian , Studer Armido 
Published: May 2016

AbstractIn situ generated arynes react with stannylated phosphanes to form the title compounds in moderate to good yields.
ChemInform Abstract: Taraxerane‐Type Triterpenoids from Portulaca oleracea Linn. Seeds
Authors: Mir Showkat R. , Ali Mohammed 
Published: May 2016

Abstractisolation and characterization of four taraxeran‐type triterpenoids, taraxerol (Ia) acetyl (Ib), alenritolic acid and portaraxeroic acid A (Ic) and B (Id)
ChemInform Abstract: A New Cyclopentane Derivative from Ficus pomifera Wall. and Curcuma leucorrhiza Roxb.
Authors: Wangkheirakpam Sujata D. , Asem Satyavama D. , Radhapiyari Wangkheirakpam , Singh Chingakham B. , Yumnam Rajkumar S. , Laitonjam Warjeet S. 
Published: May 2016

Abstractisolation, structure elucidation, antimicrobial and antioxidant activities of tetraol (I)
ChemInform Abstract: Amine‐Functionalized Metal—Organic Frameworks: Structure, Synthesis and Applications
Authors: Lin Yichao , Kong Chunlong , Chen Liang 
Published: May 2016

AbstractReview: syntheses, structures and properties of amine‐functionalized MOFs, and highlight the benefits of amino functionality towards potential applications in CO2 capture, membranes and catalysis; 102 refs.
ChemInform Abstract: Raman and Infra‐Red Microspectroscopy: Towards Quantitative Evaluation for Clinical Research by Ratiometric Analysis
Authors: Kumar Srividya , Verma Taru , Mukherjee Ria , Ariese Freek , Somasundaram Kumaravel , Umapathy Siva 
Published: May 2016

AbstractReview: 123 refs.
Influence of process parameters and scalability of the semi‐batch production of functionalized silver nanoparticles
Authors: Nogueira André L. , Machado Ricardo A. F. , de Souza Alan Z. , Franco César V. , Dutra Gabriel B. 
Published: May 2016

AbstractThe present work investigated in detail the effects of stirring rate, temperature, and the feed flow rate of the reducing agent on the properties of functionalized silver nanoparticles produced in a semi‐batch reactor. In addition, a specific formulation was tested in chemical reactors with different volumes to demonstrate the scalability of the process. The colloids were characterized using UV‐Vis spectrophotometry, transmission electron microscopy, X‐ray diffraction, and zeta potential. The scale up of the process was successfully performed, producing similar results at larger scales to those obtained in the small scale. Standardized antibacterial assays showed that fabric and polymer samples functionalized with the produced silver colloids presented outstanding antibacterial activity. These findings demonstrated that silver nanoparticles with specific properties and promising antibacterial applications can be rapidly produced through suitable tuning of the process parameters regardless the scale of production.
Combining thread‐level speculation and just‐in‐time compilation in Google's V8 JavaScript engine
Authors: Martinsen Jan Kasper , Grahn Håkan , Isberg Anders 
Published: May 2016

SummaryThread‐level speculation can be used to take advantage of multicore architectures for JavaScript in web applications. We extend previous studies with these main contributions; we implement thread‐level speculation in the state‐of‐the art just‐in‐time‐enabled JavaScript engine V8 and make the measurements in the Chromium web browser both from Google instead of using an interpreted JavaScript engine. We evaluate the thread‐level speculation and just‐in‐time compilation combination on 15 very popular web applications, 20 HTML5 demos from the JS1K competition, and 4 Google Maps use cases. The performance is evaluated on two, four, and eight cores. The results clearly show that it is possible to successfully combine thread‐level speculation and just‐in‐time compilation. This makes it possible to take advantage of multicore architectures for web applications while hiding the details of parallel programming from the programmer. Further, our results show an average speedup for the thread‐level speculation and just‐in‐time compilation combination by a factor of almost 3 on four cores and over 4 on eight cores, without changing any of the JavaScript source code. Copyright © 2016 John Wiley & Sons, Ltd.
Reducing thread divergence in GPU‐based bees swarm optimization applied to association rule mining
Authors: Djenouri Youcef , Bendjoudi Ahcene , Habbas Zineb , Mehdi Malika , Djenouri Djamel 
Published: May 2016

SummaryThe association rules mining (ARM) problem is one of the most important problems in the area of data mining. It aims at finding all relevant association rules from transactional databases. It is CPU time intensive and requires a huge computing power when dealing with large transactional databases. To deal with this issue, Graphics Processing Units (GPUs) are a powerful tool to speed up the search process. However, their performance is closely subject to thread/branch divergence resulting from the single instruction multiple data parallel model of GPUs. In this paper, we propose three approaches based on database reorganization, aiming to reduce thread divergence in GPU‐based bees swarm optimization metaheuristic for ARM, respectively, named block‐based reordering, transactions‐based reordering, and transactions‐based reordering with median value. Theoretical and experimental studies have been carried out using well‐known large ARM instances. The experiments have been performed on an Intel Xeon 64 bit quad‐core processor E5520 coupled to Nvidia Tesla C2075 448 cores. The results show that the proposed approaches minimize considerably the number of thread divergence and improve the overall execution time. Indeed, the number of thread divergence occurrences has been reduced by up to eight times making the execution much faster. Copyright © 2016 John Wiley & Sons, Ltd.