bluuebunny/crossref_metadata_2025_split huggingface dataset:
Studies on the phase structure, mechanical, rheological properties, and nonisothermal crystallization kinetics of the PEN/SCF composites
Authors: Zheng Li‐Juan , Qi Jian‐Gang , Liu Dan , Zhou Wen‐Feng 
Published: March 2009

AbstractShort carbon fiber reinforced poly(ethylene 2,6‐naphthalate) composites (PEN/SCF) were prepared by twin‐screw extruder. The structure, mechanical, rheological properties, and nonisothermal crystallization kinetics of the composites were investigated by scanning electron microscope, universal tester, and differential scanning calorimetry. The results suggest that there is better interaction between SCF and PEN matrix, which leads to an increase in the tensile strength, Young's modulus, and impact strength of the composites with proper contents of SCF. Rheological behavior of the PEN/SCF composites melt is complicated, combining a dilate fluid at lower shear rate and a pseudoplastic fluid at higher shear rate. Moreover, the flow activation energy of the composites suggests that the melt with more SCF has higher sensitivity to the processing temperature. In conclusion, the composite with 5–10 wt % content of SCF has better properties. The Avrami equation modified by Jeziorny and Ozawa theory was used, respectively, to fit the primary stage of nonisothermal crystallization of various composites. The Avrami exponents n are evaluated to be 2.6–3.1 for the neat PEN and 3.4–4.8 for PEN/SCF composites, and the SCF served as nucleation agent accelerates the crystallization rate of the composites, and more the content of SCF faster the crystallization rate. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
Mineral filler reinforcement for commingled recycled‐plastic materials
Authors: Putra H. D. , Ngothai Y. , Ozbakkaloglu T. , Seracino R. 
Published: March 2009

AbstractThree types of mineral fillers, gypsum, wollastonite, and talc, were investigated for their ability to modify the mechanical properties of commingled recycled‐plastic composites containing 0.07–0.26 v/v of filler. Mechanical test results showed that the talc reinforced composites were significantly better in mechanical properties when compared with the gypsum and wollastonite composites. Scanning electron microscopy (SEM) showed that gypsum formed large agglomerates in the matrix. Interfacial adhesion between filler and matrix was evaluated using simple empirical models. To enhance the adhesion, talc, and wollastonite were pretreated with silane coupling agents, 3‐methacryloxypropyltrimethoxy silane (γ‐MPS) and 3‐aminopropyltriethoxy silane (γ‐APS). This did not result in any significant improvement to the material properties. The γ‐APS treatment, however, increased the tensile properties of the composites by ∼ 5% when compared with the γ‐MPS treatment. The SEM investigations showed that the γ‐APS treatment provided better adhesion of filler particles and hence voids were less likely to form in the matrix when compared with the γ‐MPS composites. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
Influence of processing conditions in small‐scale melt mixing and compression molding on the resistivity and morphology of polycarbonate–MWNT composites
Authors: Kasaliwal Gaurav , Göldel Andreas , Pötschke Petra 
Published: March 2009

AbstractPolycarbonate (PC) composites containing 1 wt % multiwalled carbon nanotubes (MWNT) were produced in a small‐scale DACA microcompounder under variation of mixing temperature and mixing speed at fixed mixing time according to a two‐factor and three‐level factorial design. The extruded strands were compression molded under comparable conditions, and their volume resistivity values indicated differences of about 14 orders of magnitude as well as big differences in the state of MWNT agglomerate dispersion (evaluated as macrodispersion index) are observed. The results indicate that mixing at high melt temperature and high speed can lead to the composites having low resistivity and high dispersion index at low mixing energy input. The influence of compression molding parameters was investigated on precompounded PC composites containing 1 and 2 wt % MWNT. Compression molding parameters such as temperature, time, and speed were varied according to a three‐level and three‐factor factorial design. By adjusting compression molding parameters, the volume resistivity of PC with 1 wt % MWNT composites can be varied over eight orders of magnitude, whereas for 2 wt % MWNT, the variation was within one decade. The electrical volume resistivity results indicate the highest influence of the compression molding temperature followed by time. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
Batteries and a pinch of salt: A simple toolkit for the production of poly(methylsilyne)
Authors: Eroğlu Damla , Nur Yusuf , Sönmez Umut , Bayram Göknur , Pitcher Michael W. , Toppare Levent K. 
Published: March 2009

AbstractA simple synthesis of poly(methylsilyne) has been developed. The straightforward polymerization reaction can be accomplished using simply a series of batteries and a very simple electrolyte. Poly(methylsilyne) has previously been shown to be a high‐purity, high‐yield precursor to stoichometric silicon carbide. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
Preparation and anti‐TMV activity of guanidinylated chitosan hydrochloride
Authors: Hu Ying , Cai Jun , DU Yumin , Lin Jianguo , Wang Changgao , Xiong Kejuan 
Published: March 2009

AbstractIn this study, guanidinylated chitosan hydrochloride (GCH) was synthesized and its structure was characterized by UV–vis and FTIR. The degree of substitution of guanidinylated chitosan was confirmed by elemental analysis. In vitro antiviral activity of guanidinium derivative on local infection and systemic infection of tobacco mosaic virus (TMV) inoculated were evaluated by semileaf method using different modes of GCH application and antiserum assay. Meanwhile, the morphological characteristic of virus treated by GCH was performed by transmission electron microscope. The results showed that GCH had better antiviral activity than chitosan. The average inhibitory rate of GCH on local infection was 84%, which was much higher than that of chitosan hydrochloride. It was shown that the guanidinylated chitosan was an efficient passivator, and its antiviral effect decreased after mechanical inoculation. The guanidinylated chitosan increased the resistance of plant against TMV and decreased the infection of the virus. The electron microscope photograph exhibited that GCH not only directly altered the configuration of TMV but also congregated and reduced the virus. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
Effects of artificial weathering on the mechanical properties of paper‐based materials consolidated with polymeric materials
Authors: Baldin Alice , Gorassini Andrea , Princi Elisabetta , Vicini Silvia , Zappalà Antonio 
Published: March 2009

AbstractThe study of polymer behavior over time represents the crucial stage in the setup of innovative methodologies for paper restoration. In this research, a series of laboratory simulations by accelerated aging and characterization tests by chemical and physical measurements were carried out on paper samples consolidated both by grafting polymerization with acrylic copolymers and by coating with waterborne polyurethanes with the aim of determining their harmlessness and long‐term effectiveness. In this way, our purpose was not only to verify possible risks for the paper materials but also to determine the advantages and potentialities of new restoration methods through an appropriate and essential working plan of investigations. From our evaluation, both the selected consolidation methods appeared unsuitable to be used in paper restoration because of the damage that they could cause on the paper materials because of their limited durability over time. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
A novel high‐throughput cell‐based method for integrated quantification of type I interferons and in vitro screening of immunostimulatory RNA drug delivery
Authors: Nguyen David N. , Kim Phillip , Martínez‐Sobrido Luis , Beitzel Brett , García‐Sastre Adolfo , Langer Robert , Anderson Daniel G. 
Published: March 2009

AbstractA hallmark of immune activation by certain RNA sequences is the generation of interferon responses. However, the study of immunostimulatory RNA (isRNA) has been hindered by costly and slow methods, particularly in vitro. We have developed a cell‐based assay to detect human type I interferon (IFN) that reliably senses both IFN‐α and IFN‐β simultaneously. The human 293T cell line was stably transfected with a fusion gene of monomeric red fluorescent protein (mRFP) under the transcriptional control of an interferon‐stimulated response element (ISRE). High levels of mRFP are expressed following activation of the type I IFN receptor (IFNAR). Using this method, detection limits for IFN similar to that of ELISA can be achieved but with a greater dynamic range and in a high‐throughput manner. As a proof of concept, we utilized this method to screen a library of cationic lipid‐like materials that form nanoparticle complexes with RNA for induction of innate immune responses in vitro. We expect the screening and detection methods described herein may provide a useful tool in elucidating mechanisms that govern the delivery of RNA molecules to effector cells and receptors of the innate immune system. We apply this tool to investigate isRNA drug delivery, but it may also find use in other applications for which high‐throughput detection of type 1 IFN is desired. Biotechnol. Bioeng. 2009;103: 664–675. © 2009 Wiley Periodicals, Inc.
An advanced‐automated system for equipotential field lines mapping utilizing motion control
Authors: See Alex , Leong Ang Jin 
Published: March 2009

AbstractThis article describes an automated system, using LabVIEW for the purpose of experimental investigation of equipotential field lines mapping between two electrodes. This system is meant for undergraduate students in the engineering laboratory. A computer‐based system installed with motion control hardware are utilized to assist in the study of mapping of equipotential field lines using water as a medium in a water tray system with two electrodes apart. The equipotential line profiles are obtained by automatic sampling, locating the spatial positions/points of equivalent potential values and joining these points. Equipotential line profiles for different electrodes configurations can be investigated with this system. This advanced‐automated system is to complement and assists students in understanding fundamental concepts of static electric fields and mapping of equipotential lines profiles for different electrodes configurations. An additional value of such an activity is to provide introduction to remote access capability or teleoperation of equipment to the students. © 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 19: 171–182, 2011
MNEME: A memory hierarchy simulator for an engineering computer architecture course
Authors: Moreno Lorenzo , González Evelio J. , Popescu Beatrice , Toledo Jonay , Torres Jesús , Gonzalez Carina 
Published: March 2009

AbstractAs in other fields of Engineering, simulators are widely used to teach Memory hierarchy topics. In this paper, a simulator called MNEME (due to the muse of the memory in Greek mythology), which includes a complete vision of memory hierarchy topics, is presented. This simulator has been validated and improved using feedback from students during two academic years. This way, the students have taken part significantly in the MNEME design process. © 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 19: 358–364, 2011
Synthesis and Vanilloid Receptor (TRPV1) Activity of the Enantiomers of α‐Fluorinated Capsaicin
Authors: Winkler Margit , Moraux Thomas , Khairy Hesham A. , Scott Roderick H. , Slawin Alexandra M. Z. , O'Hagan David 
Published: March 2009

AbstractSpicing it up with fluorine: Enantiomers of α‐fluorinated capsaicin 2, have been prepared by organocatalytic electrophilic fluorination and have been used as probes for the binding conformation of capsaicin to the TRPV1 pain receptor. No enantiomeric bias is observed, thus suggesting an extended binding conformation along the molecular axis.magnified image
Organofluorosilanes as Model Compounds for 18F‐Labeled Silicon‐Based PET Tracers and their Hydrolytic Stability: Experimental Data and Theoretical Calculations (PET=Positron Emission Tomography)
Authors: Höhne Aileen , Yu Lian , Mu Linjing , Reiher Markus , Voigtmann Ulrike , Klar Ulrich , Graham Keith , Schubiger P. August , Ametamey Simon M. 
Published: March 2009

AbstractWater stable! Radiochemists have recently discovered silicon chemistry as a tool for the introduction of 18F into biomolecules for positron emission tomography (PET) imaging. 18F‐labeled PET tracers must be stable towards defluorination under physiological conditions. Here, a theoretical model of organofluorosilane hydrolysis is developed that correlates with the experimentally determined hydrolytic half‐lives and allows estimation of the stability of newly designed compounds (see scheme).magnified imageSilicon chemistry has only recently been discovered by radiochemists as a straightforward tool for the introduction of 18F into biomolecules for positron emission tomography (PET) imaging. 18F‐labeled PET tracers must be stable towards defluorination under physiological conditions, but it is known that the hydrolytic stability of the silicon–fluorine bond is determined by the nature of the substituents on silicon. In the presented study we performed an extensive investigation on the hydrolytic stability of various synthesized organofluorosilane model compounds. By means of density functional theory (DFT) methods a theoretical model of organofluorosilane hydrolysis, which correlates with the experimentally determined hydrolytic half‐lives, is developed. The calculation of the difference of SiF bond lengths between the optimized structures of the starting material A and the intermediate structure C allows the estimation of the hydrolytic stability of newly designed compounds. This model permits the facilitated development of improved building blocks for the synthesis of novel 18F‐silyl‐modified biomolecules for PET imaging.
ChemInform Abstract: Fast Preparation and Characterization of Quaternary Thermoelectric Clathrates.
Authors: Christensen Mogens , Johnsen Simon , Soendergaard Martin , Overgaard Jacob , Birkedal Henrik , Iversen Bo B. 
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, Structure and Physicochemical Characterization of a Noncentrosymmetric, Quaternary Thiostannate: EuCu2SnS4.
Authors: Aitken Jennifer A. , Lekse Jonathan W. , Yao Jin‐Lei , Quinones Rosalynn 
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: TEMPO/NaIO4—SiO2: A Catalytic Oxidative Rearrangement of Tertiary Allylic Alcohols to β‐Substituted α,β‐Unsaturated Ketones.
Authors: Shibuya Masatoshi , Tomizawa Masaki , Iwabuchi Yoshiharu 
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: Highly Enantioselective Carbon—Carbon Bond Formation by Cu‐Catalyzed Asymmetric [2,3]‐Sigmatropic Rearrangement: Application to the Syntheses of Seven‐Membered Oxacycles and Six‐Membered Carbocycles.
Authors: Kumaraswamy Gullapalli , Sadaiah Kadivendi , Ramakrishna Duggirala Subrahmanya , Police Naresh , Sridhar Balasubramanian , Bharatam Jagadeesh 
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: Efficient Phosphorus Catalysts for the Halogen‐Exchange (Halex) Reaction.
Authors: Lacour Marie‐Agnes , Zablocka Maria , Duhayon Carine , Majoral Jean‐Pierre , Taillefer Marc 
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: Cross‐Coupling Reaction Between Alcohols Through sp3 C—H Activation Catalyzed by a Ruthenium/Lewis Acid System.
Authors: Zhang Shu‐Yu , Tu Yong‐Qiang , Fan Chun‐An , Jiang Yi‐Jun , Shi Lei , Cao Ke , Zhang En 
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: Mild and Efficient Catalytic Protocol for Tetrahydropyranylation of Alcohols Using Acidic Keggin and Wells—Dawson Structures.
Authors: Tayebee Reza 
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: Stereoselective Synthesis of Functionalized 1,4‐Dienes.
Authors: Khamri Sonia , Turki Taoufik , Amri Hassen 
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: Rhodium(I)‐Catalyzed One‐Pot Synthesis of Dialkyl Ketones from Methanol and Alkenes Through Directed sp3 C—H Bond Activation of N‐Methylamine.
Authors: Jo Eun‐Ae , Lee Ji‐Hyun , Jun Chul‐Ho 
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: Enantioselective Synthesis of Cyclopropylcarboxamides Using s‐BuLi—Sparteine‐Mediated Metallation.
Authors: Lauru Stephanie , Simpkins Nigel S. , Gethin David , Wilson Claire 
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: Diastereoselective Synthesis of syn‐1,3‐Dinitro Compounds by Michael Addition of Nitroalkanes to Nitroalkenes with a Thiourea Catalyst.
Authors: Rabalakos Constantinos , Wulff William D. 
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: Copper(II) Acetate Catalyzed Cross‐Coupling of Pentafluorophenylboronic Acid with Amines under an Atmosphere of Oxygen.
Authors: Zhong Weihui , Liu Zhenyu , Yu Chuanming , Su Weike 
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: Zinc‐Mediated Alkynylation of Carbonyl Compounds with Iodoalkynes: A Facile Synthesis of Propargyl Alcohols.
Authors: Srihari P. , Singh Vinay K. , Bhunia Dinesh C. , Yadav J. S. 
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: Efficient Palladium/1,10‐Phenanthroline‐Catalyzed Reductive Carbonylation of Mono‐ and Dinitroarenes to Urethanes in Phosphonium Salt Ionic Liquids.
Authors: Yang Qian , Robertson Al , Alper Howard 
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: Meldrum′s Acid Catalyzed Reaction of Tetracyanoethylene and Aldehydes in Water: A Novel Approach to Arylidenemalononitrile.
Authors: Shaabani Ahmad , Rezayan Ali Hossein , Heidary Marjan , Sarvary Afshin 
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: First Cross‐Coupling Reaction of Potassium Aryltrifluoroborates with Organic Chlorides in Aqueous Media Catalyzed by an Oxime‐Derived Palladacycle.
Authors: Alacid Emilio , Najera Carmen 
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: Reusable and Ligand‐Free Palladium‐Catalyzed Suzuki—Miyaura Cross‐Couplings of Aryl Halides with Arylboronic Acids in Tetra‐n‐butylammonium Bromide.
Authors: Xie Ye‐Xiang , Wang Jian , Li Jin‐Heng , Liang Yun 
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.