bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of fiber orientation and fiber content on properties of sisal‐jute‐glass fiber‐reinforced polyester composites
Authors: Ramesh Manickam , Palanikumar Kayaroganam , Reddy Konireddy Hemachandra 
Published: October 2015

ABSTRACTThe incorporation of natural fibers with polymer matrix composites (PMCs) has increasing applications in many fields of engineering due to the growing concerns regarding the environmental impact and energy crisis. The objective of this work is to examine the effect of fiber orientation and fiber content on properties of sisal‐jute‐glass fiber‐reinforced polyester composites. In this experimental study, sisal‐jute‐glass fiber‐reinforced polyester composites are prepared with fiber orientations of 0° and 90° and fiber volume of sisal‐jute‐glass fibers are in the ratio of 40:0:60, 0:40:60, and 20:20:60 respectively, and the experiments were conducted. The results indicated that the hybrid composites had shown better performance and the fiber orientation and fiber content play major role in strength and water absorption properties. The morphological properties, internal structure, cracks, and fiber pull out of the fractured specimen during testing are also investigated by using scanning electron microscopy (SEM) analysis. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 42968.
A highly sensitive and selective fluorescent probe for fluoride anions based on intramolecular charge transfer
Authors: Liu Jingkai , Xu Zhenghe , Liu Caiyun , Xu Lirong , Wang Zhongpeng , Zhu Baocun 
Published: October 2015

AbstractCurrently, there is a great need to develop methods for the selective detection of fluoride anions (F–) owing to their toxicity in the environment and biological function in living systems. In this study, we developed a new fluorescent probe (probe 1) employing a Si–O bond as a highly selective recognition receptor for detecting F– via intramolecular charge transfer. Probe 1 could detect F– quantitatively using the turn‐on fluorescence spectroscopy method with excellent sensitivity in the range of 4–38 μM and a detection limit of 0.26 μM; the detection time was < 17 min. We anticipate that probe 1 would be used widely to monitor F– in the environment. Copyright © 2015 John Wiley & Sons, Ltd.
ChemInform Abstract: Isotropic Negative Area Compressibility over Large Pressure Range in Potassium Beryllium Fluoroborate and Its Potential Applications in Deep Ultraviolet Region.
Authors: Li Wei , et al.  
Published: October 2015

AbstractKBe2BO3F2 is prepared by solid state reaction of a stoichiometric mixture of K2CO3, BeO, H3BO3, and KF (700 °C, 3 d) and characterized by XRD and DFT calculations.
ChemInform Abstract: Photoluminescence Characteristics of Sm3+ Doped Sr2P2O7 as New Orange‐Red Emitting Phosphor.
Authors: Zhou Rui , Wang Luxiang , Xu Mengjiao , Jia Dianzeng 
Published: October 2015

AbstractSr2P2O7: xSm3+ (x = 0.02—0.12) and samples co‐doped with different charge compensators (Li+, Na+, K+ at levels of 0.02—0.1, Sm3+ = 0.04) are prepared by calcination of stoichiometric amounts of SrCl2, (NH4)2HPO4, Sm2O3, and alkali carbonates in air (1.
ChemInform Abstract: Experimental Reinvestigation of Al—Co Phase Diagram in Vicinity of Al13Co4 Family of Phases.
Authors: Priputen P. , Kusy M. , Drienovsky M. , Janickovic D. , Cicka R. , Cernickova I. , Janovec J. 
Published: October 2015

AbstractAlloys with bulk compositions ranging between Al71Co29 and Al77Co23 are prepared by arc melting the elements followed by annealing at temperatures between 1070 and 1150 °C (330 h) and rapid quenching.
ChemInform Abstract: Novel Aluminide CePt3‐xAlx of the CeNi3 Type Structure, with 0.61 < x < 0.81.
Authors: Morozova Yu. , Kurenbaeva Zh. , Dunaev S. , Murashova E. 
Published: October 2015

AbstractCePt2.27Al0.73 is prepared by repeated arc melting of the elements followed by annealing (evacuated quartz tubes, 700 °C, 30 d).
ChemInform Abstract: A Combined Transition‐Metal‐Catalyzed and Photopromoted Process: Synthesis of 2,3‐Fused 4‐Phenylnaphthalen‐1‐yl Carboxylates from 1,7‐Diaryl‐1,6‐diynes.
Authors: Yamamoto Yoshihiko , Mori Shota , Shibuya Masatoshi 
Published: October 2015

AbstractThe Ru‐catalyzed hydrocarboxylative cyclization of 1,7‐diphenyl‐1,6‐diynes (I) with AcOH gives rise to dienes (III), which are converted into 2,3‐fused 4‐phenylnaphthalen‐1‐yl carboxylates (IV) by oxidative photocyclization.
ChemInform Abstract: Enantioselective Organocatalytic Alkylation of Aldehydes and Enals Driven by the Direct Photoexcitation of Enamines.
Authors: Silvi Mattia , Arceo Elena , Jurberg Igor D. , Cassani Carlo , Melchiorre Paolo 
Published: October 2015

AbstractThe asymmetric photo‐organocatalytic α‐ or γ‐alkylation of aliphatic aldehydes or α‐branched enals with bromomalonates, respectively, is described.
ChemInform Abstract: One‐Pot Synthesis of α‐Ketoacetals from Aryl Methyl Ketones in the Presence of Selenous Acid Catalyzed by Boron Trifluoride Etherate.
Authors: Kharkongor Icydora , Myrboh Bekington 
Published: October 2015

AbstractThe reaction of aryl methyl ketones with triethylorthoformate proceeds under mild, solvent free conditions and tolerates a variety of functional groups.
ChemInform Abstract: (Diacetoxyiodo)benzene‐Mediated Reaction of Ethynylcarbinols: Entry to α,α′‐Diacetoxy Ketones and Glycerol Derivatives.
Authors: Liu Qing‐Rong , Pan Cheng‐Xue , Ma Xiao‐Pan , Mo Dong‐Liang , Su Gui‐Fa 
Published: October 2015

AbstractA simple method is developed for the conversion of ethynylcarbinols into α,α‐diacetoxy ketones (IV).
ChemInform Abstract: Tf2NH‐Catalyzed Amide Synthesis from Vinyl Azides and Alcohols.
Authors: Zhang Feng‐Lian , Zhu Xu , Chiba Shunsuke 
Published: October 2015

AbstractThe efficient construction of amides with C—C bond formation through nucleophilic attack of vinyl azides onto the supposable carbocation intermediates derived from alcohols is described.
ChemInform Abstract: Efficient and Practical Oxidative Bromination and Iodination of Arenes and Heteroarenes with DMSO and Hydrogen Halide: A Mild Protocol for Late‐Stage Functionalization.
Authors: Song Song , Sun Xiang , Li Xinwei , Yuan Yizhi , Jiao Ning 
Published: October 2015

AbstractA protocol for late‐stage bromination and iodination of natural products is developed.
ChemInform Abstract: Metal‐Free Methodology for the Preparation of Sterically Hindered Alkynoylphenols and Its Application to the Synthesis of Flavones and Aurones.
Authors: Taylor Cassandra , Bolshan Yuri 
Published: October 2015

AbstractTreatment of anhydrides (I) and (VI) with BCl3 and alkynyltrifluoroborate salts (II) gives ortho‐demethylated ynones selectivity.
ChemInform Abstract: Rhodium(III)‐Catalyzed [4 + 1] Annulation of Aromatic and Vinylic Carboxylic Acids with Allenes: An Efficient Method Towards Vinyl‐Substituted Phthalides and 2‐Furanones.
Authors: Gandeepan Parthasarathy , Rajamalli Pachaiyappan , Cheng Chien‐Hong 
Published: October 2015

AbstractOptimized conditions A) and B) allow the access to a broad spectrum of highly substituted furan/benzofuran structures which are of interest in natural product synthesis and as substructures of biologically active agents.
ChemInform Abstract: Synthesis and Applications of 4‐Substituted 1‐(4‐Iodophenyl)pyrrolidine‐2,5‐diones.
Authors: Ali Bakhat , Shamim Anwar , Vasconcelos Stanley N. S. , Stefani Helio A. 
Published: October 2015

Abstract4‐Acetoxy substituted 1‐(4‐iodophenyl)pyrrolidine‐2,5‐dione is successfully transformed to the corresponding 4‐amino substituted derivatives.
ChemInform Abstract: Towards Reaction Control: An Expeditious Access to Racemic 5‐Substituted Tetramates and 5‐Substituted Tetramic Acids from Malimides.
Authors: Huang Pei‐Qiang , Ou Wei , Ye Jian‐Liang 
Published: October 2015

AbstractHemiaminals (III) derived from malimides undergo HCl‐promoted chemoselective transformations to 5‐alkyltetramates (IV) in CH2Cl2 or furnish 5‐alkyltetramic acids (V) in neat HCl.
ChemInform Abstract: Synthesis of N‐Vinylindoles Through Copper Catalyzed Cyclization Reaction of N‐(2‐Alkynylphenyl)imine.
Authors: Wang Zhi‐Qiang , Zhang Xu , Yu Lin‐Tao , Mao Wu‐Tao , Chen Chang‐Zhong , Xu Kun 
Published: October 2015

AbstractThe copper‐catalyzed cyclization of N‐(2‐alkynylphenyl)imines (I) and (VII) leads to desired 2‐substituted N‐vinylindoles (II) and (VIII) in moderate to good yields.
ChemInform Abstract: Copper‐Catalyzed Domino Three‐Component Approach for the Assembly of 2‐Aminated Benzimidazoles and Quinazolines.
Authors: Tran Lam Quang , Li Jihui , Neuville Luc 
Published: October 2015

AbstractWhile anilines give the 2‐aminated benzimidazoles, the benzylamines afford the quinazolines.
ChemInform Abstract: Reusable Ionic Liquid‐Catalyzed Oxidative Coupling of Azoles and Benzylic Compounds via sp3 C—N Bond Formation under Metal‐Free Conditions.
Authors: Liu Wenbo , Liu Chenjiang , Zhang Yonghong , Sun Yadong , Abdukadera Ablimit , Wang Bin , Li He , Ma Xuecheng , Zhang Zengpeng 
Published: October 2015

AbstractThe scalable reaction procedure is successfully applied to a range of benzotriazoles with 5‐substituted substrates yielding mixtures of regioisomers.
ChemInform Abstract: Microwave‐Assisted Copper‐Catalyzed Four‐Component Tandem Synthesis of 3‐N‐Sulfonylamidine Coumarins.
Authors: Murugavel Govindarasu , Punniyamurthy Tharmalingam 
Published: October 2015

AbstractA copper‐catalyzed four component reaction of salicylaldehydes, propiolates, sulfonyl amides, and secondary amines using microwave irradiation to provide an efficient synthesis of 3‐N‐sulfonylamidine substituted coumarin derivatives is presented.
ChemInform Abstract: Pd‐Catalyzed Cross‐Coupling Study of Bi‐Functional 3‐Bromo‐4‐trifloxycoumarins with Triarylbismuth Reagents.
Authors: Rao Maddali L. N. , Kumar Abhijeet 
Published: October 2015

AbstractAn efficient method for the chemoselective synthesis of various mono‐, di‐, and triarylated coumarins is disclosed.
ChemInform Abstract: RhI‐Catalyzed Site‐Selective Decarbonylative Alkenylation and Arylation of Quinolones under Chelation Assistance.
Authors: Kwon Soonhyung , Kang Dahye , Hong Sungwoo 
Published: October 2015

AbstractAn N‐pyrimidinyl substituent in the substrate is found to redirect the coordination between catalyst and the carbonyl group to cause a direct C—H functionalization at position 2 of the 4‐quinolinones.
ChemInform Abstract: Copper Catalyzed Direct Amidation of Methyl Groups with N—H Bonds.
Authors: Huang Yao , Chen Tieqiao , Li Qiang , Zhou Yongbo , Yin Shuang‐Feng 
Published: October 2015

AbstractA broad range of hetaromatics is amidated with ammonium acetate, including 2‐methylquinolines equipped with various functional groups, 2‐methyl and 2‐ethylpyridine, 2‐methylthiophene and 2‐methylthiazole.
ChemInform Abstract: N‐Heterocyclic Carbene‐Catalyzed Oxidative Annulations of α,β‐Unsaturated Aldehydes with Hydrazones: Selective Synthesis of Optically Active 4,5‐Dihydropyridazin‐3‐ones and Pyridazin‐3‐ones.
Authors: Mao Jian‐Hui , Wang Zi‐Tian , Wang Zhan‐Yong , Cheng Ying 
Published: October 2015

AbstractIn the presence of an achiral triazolium salt as catalyst, the reaction of aldehydes with hydrazones of type (II) gives pyridazin‐3‐ones (III) in good yields.
ChemInform Abstract: Preparation of Halogen‐Containing 4H‐Pyrido[e][1,3]oxazin‐4‐ones and Their Transformation into 2‐Hydroxypyridinyl‐Substituted 1,2,4‐Oxadiazoles and 1,2,4‐Triazoles.
Authors: Le Falher Laetitia , Ben Ayad Omar , Ziyaret Ozge , Botuha Candice , Thorimbert Serge , Slowinski Franck 
Published: October 2015

AbstractThe preparation of the title compounds starts from brominated pyridines (I), (X), and (XVI) and proceeds via imide sodium salts followed by intramolecular O‐arylation.
ChemInform Abstract: Pd‐Catalyzed Diamination of 1,2,4‐Triazinyl Complexant Scaffolds.
Authors: Tai Serene , Dover Evan J. , Marchi Sydney V. , Carrick Jesse D. 
Published: October 2015

AbstractA Pd‐catalyzed reaction of bis(bromophenyl) substituted 1,2,4‐triazines (I) with primary amines (II) is developed to yield novel 4,4′‐bisaminophenyl substituted monotriazinylpyridine derivatives (III) as potential ligands for chemoselective minor actinide extraction processes.
ChemInform Abstract: Synthesis of Ramirez Ylides from Morita—Baylis—Hillman Adducts of α‐Bromocinnamaldehyde: An Intramolecular 1,6‐Conjugate Addition of Phosphorus Ylide.
Authors: Kim Ko Hoon , Lee Sangku , Lee Junseong , Kim Jae Nyoung 
Published: October 2015

AbstractIn situ generated phosphorous ylides undergo intramolecular 1,6‐conjugated addition to form Ramirez ylides in often excellent yields.
ChemInform Abstract: Experimental and Theoretical Investigations of the Stereoselective Synthesis of P‐Stereogenic Phosphine Oxides.
Authors: Copey Laurent , Jean‐Gerard Ludivine , Framery Eric , Pilet Guillaume , Robert Vincent , Andrioletti Bruno 
Published: October 2015

AbstractThe cyclization of aminocyclohexanol (II) with Ph‐POCl2 (I) followed by cleavage of P—N bond in the intermediate oxazaphospholidine with Grignard reagents (III) leads to phosphinates (IV), which are converted into (S)‐phosphine oxides (VI) by refluxing with a second Grignard reagent in THF.
ChemInform Abstract: Copper‐Catalyzed α‐Selective Hydrostannylation of Alkynes for the Synthesis of Branched Alkenylstannanes.
Authors: Yoshida H. , Shinke A. , Kawano Y. , Takaki K. 
Published: October 2015

AbstractThe reaction of alkynes (IV) with hexamethyldistannane (II) leads to branched trimethylstannyl alkenes (V) as main products.
ChemInform Abstract: Oxepine‐Containing Diketopiperazine Alkaloids from the Algal‐Derived Endophytic Fungus Paecilomyces variotii EN‐291
Authors: Zhang Peng , Li Xiao‐Ming , Wang Jia‐Ning , Wang Bin‐Gui 
Published: October 2015

Abstractisolation and structure elucidation of varioloid A (I) and B (II)
ChemInform Abstract: Three New Phenyl Ether Derivatives from Aspergillus carneus HQ889708
Authors: He Ping , Tian Sha‐Sha , Xu Yan , Yu He , Ji Yan‐Nan , Zhu Hua‐Jie , Li Jian‐Heng 
Published: October 2015

Abstractisolation and structure elucidation
ChemInform Abstract: Two Cell Differentiation Inducing Pyridoacridines from a Marine Sponge Biemna sp. and Their Chemical Conversions.
Authors: Pedrazzoli Moran Daniel A. , Takada Kentaro , Ise Yuji , Bontemps Nataly , Davis Rohan A. , Furihata Kazuo , Okada Shigeru , Matsunaga Shigeki 
Published: October 2015

AbstractTwo pyridoacridines, N‐hydroxymethylisocystodamine (I) and neolabuanine A (II) together with six known compounds are isolated from the title sponge.
ChemInform Abstract: Isolation and Total Synthesis of Kirkamide, an Aminocyclitol from an Obligate Leaf Nodule Symbiont.
Authors: Sieber Simon , Carlier Aurelien , Neuburger Markus , Grabenweger Giselher , Eberl Leo , Gademann Karl 
Published: October 2015

AbstractThe new aminocyclitol, kirkamide (I), is isolated from leaf nodules of Psychotira kirkii.
A comparative study on dynamic stiffness in typical finite element model and multi‐body model of C6–C7 cervical spine segment
Authors: Wang Yawei , Wang Lizhen , Du Chengfei , Mo Zhongjun , Fan Yubo 
Published: October 2015

SummaryIn contrast to numerous researches on static or quasi‐static stiffness of cervical spine segments, very few investigations on their dynamic stiffness were published. Currently, scale factors and estimated coefficients were usually used in multi‐body models for including viscoelastic properties and damping effects, meanwhile viscoelastic properties of some tissues were unavailable for establishing finite element models. Because dynamic stiffness of cervical spine segments in these models were difficult to validate because of lacking in experimental data, we tried to gain some insights on current modeling methods through studying dynamic stiffness differences between these models. A finite element model and a multi‐body model of C6–C7 segment were developed through using available material data and typical modeling technologies. These two models were validated with quasi‐static response data of the C6–C7 cervical spine segment. Dynamic stiffness differences were investigated through controlling motions of C6 vertebrae at different rates and then comparing their reaction forces or moments. Validation results showed that both the finite element model and the multi‐body model could generate reasonable responses under quasi‐static loads, but the finite element segment model exhibited more nonlinear characters. Dynamic response investigations indicated that dynamic stiffness of this finite element model might be underestimated because of the absence of dynamic stiffen effect and damping effects of annulus fibrous, while representation of these effects also need to be improved in current multi‐body model. Copyright © 2015 John Wiley & Sons, Ltd.
The Clar Structure in Inorganic BN Analogues of Polybenzenoid Hydrocarbons: Does it Exist or Not?
Authors: Wu Jingjing , Zhu Jun 
Published: October 2015

AbstractThe Clar structure of polybenzenoid hydrocarbons (PBHs) have attracted considerable interest of both theoretical and experimental chemists since it was proposed in the 1950s. However, it remains unclear whether the Clar structure could exist in inorganic PBHs, the boron nitride (BN) analogues where the alternate boron and nitrogen atoms are used to replace the carbon atoms of PBHs. Here, we carry out thorough density functional theory (DFT) calculations to probe the possibility of Clar structures in BN analogues of PBHs. A strong correlation (r2=0.975) between the ring number (n=3–10) of BN analogues of [n]acenes and energy differences between the most and least stable isomers is identified, suggesting the existence of Clar structures in inorganic PBHs. In addition, the slightly weaker correlations in comparison to that (r2=0.989) of the organic PBHs is rationalized by the reduced aromaticity, which is revealed by two aromatic indices: ELFπ and SCI.
Immunoisolation of pancreatic epithelial cells from endoscopic ultrasound‐guided fine needle aspirates with magnetic beads for downstream molecular application
Authors: Afify Alaa , Huang Eric C. , Jeong Matthew , Urayama Shiro 
Published: October 2015

BackgroundEvaluation of pancreatic mass is routinely performed by endoscopic ultrasound‐guided fine needle aspiration (EUS‐FNA). However, molecular analyses of the tumor cells on FNA samples are limited by the significant cellular heterogeneity. The goal of the current study is to evaluate a magnetic immunoconcentration technique in isolating pancreatic epithelial cells from needle aspirates, and to demonstrate that the isolated cells could be utilized for molecular analysis.MethodsPancreatic EUS–FNA specimens were processed and stored at −80°C. Based on the cytopathological diagnosis, 17 adenocarcinoma, 3 lymphoproliferative, and 3 benign cases were retrieved from the collection for further analyses. Epithelial cells were isolated using antihuman epithelial cell specific antibody‐bound magnetic beads, and the isolated cellular component was confirmed cytologically. Genomic DNA was extracted, quantitated, and evaluated with methylation‐specific PCR for cyclin D2 in 8 adenocarcinoma cases.ResultsAfter optimization, malignant epithelial cells were successfully isolated from all adenocarcinoma cases. Normal pancreatic ductal cells were isolated from three benign cases. No cells were retrieved after immunomagnetic isolation in all three lymphoproliferative cases. DNA yields were 5–2646 ng, with a mean of 357 ng. Methylation‐specific PCR for cyclin D2 on the 8 carcinoma cases showed methylated state at the promoter region, demonstrating feasible evaluation of the methylation status.ConclusionThe magnetic immunoconcentration of pancreatic EUS–FNA specimen described here is a practical method of isolating pancreatic epithelial cells from needle aspirates. Isolated cells were sufficient for performing subsequent molecular analysis. Diagn. Cytopathol. 2016;44:32–38. © 2015 Wiley Periodicals, Inc.
Effects of prolonged drought on the anatomy of sun and shade needles in young Norway spruce trees
Authors: Gebauer Roman , Volařík Daniel , Urban Josef , Børja Isabella , Nagy Nina Elisabeth , Eldhuset Toril Drabløs , Krokene Paal 
Published: October 2015

AbstractPredicted increases in the frequency and duration of drought are expected to negatively affect tree vitality, but we know little about how water shortage will influence needle anatomy and thereby the trees’ photosynthetic and hydraulic capacity. In this study, we evaluated anatomical changes in sun and shade needles of 20‐year‐old Norway spruce trees exposed to artificial drought stress. Canopy position was found to be important for needle structure, as sun needles had significantly higher values than shade needles for all anatomical traits (i.e., cross‐sectional needle area, number of tracheids in needle, needle hydraulic conductivity, and tracheid lumen area), except proportion of xylem area per cross‐sectional needle area. In sun needles, drought reduced all trait values by 10–40%, whereas in shade needles, only tracheid maximum diameter was reduced by drought. Due to the relatively weaker response of shade needles than sun needles in drought‐stressed trees, the difference between the two needle types was reduced by 25% in the drought‐stressed trees compared to the control trees. The observed changes in needle anatomy provide new understanding of how Norway spruce adapts to drought stress and may improve predictions of how forests will respond to global climate change.
Predictors of male insemination success in the mosquitofish (Gambusia holbrooki)
Authors: Head Megan L. , Vega‐Trejo Regina , Jacomb Frances , Jennions Michael D. 
Published: October 2015

AbstractIdentifying targets of selection is key to understanding the evolution of sexually selected behavioral and morphological traits. Many animals have coercive mating, yet little is known about whether and how mate choice operates when these are the dominant mating tactic. Here, we use multivariate selection analysis to examine the direction and shape of selection on male insemination success in the mosquitofish (Gambusia holbrooki). We found direct selection on only one of five measured traits, but correlational selection involving all five traits. Larger males with longer gonopodia and with intermediate sperm counts were more likely to inseminate females than smaller males with shorter gonopodia and extreme sperm counts. Our results highlight the need to investigate sexual selection using a multivariate framework even in species that lack complex sexual signals. Further, female choice appears to be important in driving the evolution of male sexual traits in this species where sexual coercion is the dominant mating tactic.