bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Synthesis and Characterization of Sulfamic Acid‐Functionalized Nanoparticles and Study of Its Catalytic Activity for the Oxidation of Sulfides to Sulfoxides.
Authors: Ghorbani‐Choghamarani Arash , Azadi Gouhar 
Published: November 2016

AbstractSulfamic acid‐functionalized nanoparticles are shown to be an excellent catalyst for the oxidation of sulfides to sulfoxides by H2O2.
ChemInform Abstract: Reactions of a Novel Modified Red‐Al Reducing Agent with Selected Organic Compounds Containing Representative Functional Groups and Chemoselective Reduction.
Authors: Park Ji Yeon , Shin Won Kyu , Jaladi Ashok Kumar , An Duk Keun 
Published: November 2016

AbstractThe novel reducing agent allows the conversion of ketones, aldehydes, acid chlorides, and anhydrides into alcohols under mild conditions.
ChemInform Abstract: Manganese‐Mediated C—H Alkylation of Unbiased Arenes Using Alkylboronic Acids.
Authors: Castro Susana , Fernandez Juan J. , Fananas Francisco J. , Vicente Ruben , Rodriguez Felix 
Published: November 2016

AbstractThe simple protocol uses primary or secondary unactivated alkylboronic acids for a direct functionalization of various polyaromatic hydrocarbons or benzene (XII).
ChemInform Abstract: Pd‐Catalyzed One‐Pot Sequential Unsymmetrical Cross‐Coupling Reactions of Aryl/Heteroaryl 1,2‐Dihalides.
Authors: Danodia Abhinandan K. , Saunthwal Rakesh K. , Patel Monika , Tiwari Rakesh K. , Verma Akhilesh K. 
Published: November 2016

AbstractAll possible nine combinations of Sonogashira, Heck and Suzuki coupling reactions are efficiently performed according to the title transformation.
ChemInform Abstract: Direct Access to β‐Fluorinated Aldehydes by Nitrite‐Modified Wacker Oxidation.
Authors: Chu Crystal K. , Ziegler Daniel T. , Carr Brian , Wickens Zachary K. , Grubbs Robert H. 
Published: November 2016

AbstractAn aldehyde‐selective Wacker‐type oxidation of allylic fluorides proceeds with a nitrite catalyst.
ChemInform Abstract: An Improved Catalyst for Iodine(I/III)‐Catalyzed Intermolecular C—H Amination.
Authors: Lucchetti Nicola , Scalone Michelangelo , Fantasia Serena , Muniz Kilian 
Published: November 2016

Abstract1,2‐Diiodobenzene is found to be a potent catalyst precursor for the title reaction, where N‐Troc and N‐phthalimido‐substituted methoxyamines represent the most efficient amination reagents.
ChemInform Abstract: Modular, Catalytic Enantioselective Construction of Quaternary Carbon Stereocenters by Sequential Cross‐Coupling Reactions.
Authors: Potter Bowman , Edelstein Emma K. , Morken James P. 
Published: November 2016

AbstractA stereospecific Suzuki—Miyaura coupling of highly substituted allylboronates with C‐electrophiles provides a highly regiospecific and enantiospecific access to quarternary carbon centres.
ChemInform Abstract: Catalytic Asymmetric Chlorinative Dearomatization Reaction of Benzofurans.
Authors: Liang Xiao‐Wei , Zheng Chao , You Shu‐Li 
Published: November 2016

AbstractThe title reaction under conditions A) leads to formation of a series of chlorinated spiro[benzofuran‐2,5′‐oxazole]s with 2 contiguous stereocenters.
ChemInform Abstract: Gold‐Catalyzed Intermolecular Ynamide Amination‐Initiated Aza‐Nazarov Cyclization: Access to Functionalized 2‐Aminopyrroles.
Authors: Shu Chao , Wang Yong‐Heng , Shen Cang‐Hai , Ruan Peng‐Peng , Lu Xin , Ye Long‐Wu 
Published: November 2016

AbstractIn comparison to previously developed protocols the presented simple and regioselective method offers a higher flexibility and a broad substrate scope.
ChemInform Abstract: Concise Approach to Pyrrolizino[1,2‐b]indoles from Indole‐Derived Donor—Acceptor Cyclopropanes.
Authors: Villemson Elena V. , Budynina Ekaterina M. , Ivanova Olga A. , Skvortsov Dmitriy A. , Trushkov Igor V. , Melnikov Mikhail Ya. 
Published: November 2016

AbstractThe ring opening of cyclopropanes (I) with sodium azide followed by Krapcho dealkoxycarbonylation and a subsequent Vilsmeier—Haack formylation of resulting azides (II) gives rise to azido aldehydes (IV).
ChemInform Abstract: Silver‐Catalyzed Intramolecular C‐2 Selective Acylation of Indoles with Aldehydes: An Atom‐Economical Entry to Indole‐Indolone Scaffolds.
Authors: Wang Xiaoxia , Li Zhongfeng , Cao Shengli , Rao Honghua 
Published: November 2016

AbstractThe approach is possible under conditions A), B) or C) and affords various functionalized tetracyclic nitrogen skeletons, suitable as new drug‐like components.
ChemInform Abstract: Enantioselective N‐Heterocyclic Carbene‐Catalyzed Synthesis of Saccharine‐Derived Dihydropyridinones with cis‐Selectivity.
Authors: Liang Zhi‐Qin , Wang Dong‐Ling , Zhang Chun‐Lin , Ye Song 
Published: November 2016

AbstractThe products are delivered in high yields and with excellent enantioselectivities.
ChemInform Abstract: RuCl3 Promoted Efficient Synthesis of Z‐Selective Macrocyclic Thiotetralactones via Ring‐Closing Metathesis.
Authors: Muthusamy Sengodagounder , Kumar Muniyappankovilthottam Devaraj 
Published: November 2016

AbstractThirteen title compounds, represented by examples (II), (V), (VII), and (IX), which differ in ring size, spacer, and number of either oxygen or sulfur atoms, are prepared following conditions A).
ChemInform Abstract: Nanomagnetic Zirconia‐Based Sulfonic Acid (Fe3O4@ZrO2—Pr—SO3H): A New, Efficient and Recyclable Solid Acid Catalyst for the Protection of Alcohols via HMDS under Solvent Free Conditions.
Authors: Tadjarodi Azadeh , Khodikar Rahim , Ghafuri Hosssein 
Published: November 2016

AbstractThe applied catalytic system is readily prepared in two steps starting from (3‐mercaptopropyl)trimethoxysilane and nano magnetic zirconia.
ChemInform Abstract: Asymmetric Syntheses of (‐)‐Hastanecine, (‐)‐Turneforcidine and (‐)‐Platynecine.
Authors: Brambilla Marta , Davies Stephen G. , Fletcher Ai M. , Roberts Paul M. , Thomson James E. 
Published: November 2016

AbstractAll three diastereomers are prepared in 11 steps starting from commercially available 2,2‐dimethoxyacetaldehyde.
ChemInform Abstract: Aqueous Hydroxylation Mediated Synthesis of Crystalline Calcium Uranate Particles.
Authors: Ding Weixuan , Botha Johannes A. , Hanson Bruce C. , Burke Ian T. 
Published: November 2016

AbstractIn view of suitable long‐term waste forms for depleted U, metal uranates(VI) are solubility limiting U(VI) phases under high pH conditions.
ChemInform Abstract: In situ Analyses for Ion Storage Materials
Authors: Yang Junghoon , Muhammad Shoaib , Jo Mi Ru , Kim Hyunchul , Song Kyeongse , Agyeman Daniel Adjei , Kim Yong‐Il , Yoon Won‐Sub , Kang Yong‐Mook 
Published: November 2016

AbstractReview: such as x‐ray and neutron diffraction, x‐ray absorption spectroscopy, and microscopy; 222 refs.
Rektifikationswürzekochung
Authors: Dillenburger Michael , Hertel Katja , Scheuren Hans 
Published: November 2016

AbstractDie Würzekochung bei der Bierbereitung soll u. A. unerwünschte Aromastoffe austreiben. Leitkomponente zur Bewertung dieser Abreicherung ist Dimethylsulfid (DMS). Die klassische Kochung mittels direkter Befeuerung wurde weitestgehend von Entspannungsverdampfern abgelöst. Diese bieten Vorteile, das Verdampfungsprinzip wirkt sich allerdings nachteilig auf die Austreibung aus. Durch Kombination aus Forschung und Innovation ist ein System entstanden, welches die Vorteile nutzen läßt, ohne die Nachteile in Kauf nehmen zu müssen: Das Rektifikationswürzekochsystem, welches in diesem Artikel vorgestellt wird.
Enhanced heavy oil recovery using 1‐Ethyl‐3‐Methyl‐Imidazolium Acetate
Authors: Tunnish Ahmed , Shirif Ezeddin , Henni Amr 
Published: November 2016

abstractInjecting chemicals in reservoirs is an efficient technique to improve oil recovery. In this study, a promising room temperature ionic liquid (RTIL), 1‐Ethyl‐3‐Methyl‐Imidazolium Acetate ([EMIM][Ac]), was injected to enhance the extraction of a heavy oil (14° API) from an unconsolidated sand pack at room conditions. [EMIM][Ac] was mixed with two different synthetic brines (0.1 and 1 mass% NaCl), and injected as a continuous displacing phase to improve heavy oil recovery. The results obtained showed that [EMIM][Ac] is an efficient solvent in the enhancement of the oil recovery factor (RF). The effects of [EMIM][Ac] concentration (C) on the interfacial tension (IFT), surface tension (SFT), zeta potential (ZP), pH, and conductivity (COND) were also investigated. The experimental study clearly demonstrates that [EMIM][Ac] is more efficient in enhancing the recovery of heavy oil than sodium dodecyl sulphate (SDS), a well‐known commercial surfactant.
THz Radiation Generation via the Interaction of Ultra‐short Laser Pulses with the Molecular Hydrogen Plasma
Authors: Soltani Gishini M. S. , Ganjovi A. , Saeed M. 
Published: November 2016

AbstractIn this paper, a two dimensional Particle In Cell‐Monte Carlo Collision simulation scheme is used to examine the THz generation via the interaction of high intensity ultra‐short laser pulses with an underdense molecular hydrogen plasma slab. The influences of plasma density, laser pulse duration and its intensity on the induced plasma current density and the subsequent effects on the generated THz signal characteristics are studied. It is observed that the induced current density in the plasma medium and THz spectral intensity are increased at the higher laser pulse intensities, laser pulse durations and plasma densities. Moreover, the generated THz electric field amplitude is reduced at the higher laser pulse durations. A wider frequency range for the generated THz signal is shown at the lower laser pulse durations and higher plasma densities. Additionally, it is found that the induced current density in hydrogen plasma medium is the dominant factor influencing the generation of THz pulse radiation. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Nonlinear Waves in Nonuniform Complex Astrocloud
Authors: Haloi A. , Karmakar P. K. 
Published: November 2016

AbstractThe global nonlinear gravito‐electrostatic eigen‐fluctuation behaviors in large‐scale non‐uniform complex astroclouds in quasi‐neutral hydrodynamic equilibrium are methodologically analyzed. Its composition includes warm lighter electrons, ions; and massive bi‐polar multi‐dust grains (inertial) with partial ionization sourced, via plasma‐contact electrification, in the cloud plasma background. The multi‐fluidic viscous drag effects are conjointly encompassed. The naturalistic equilibrium inhomogeneities, gradient forces and nonlinear convective dynamics are considered without any recourse to the Jeans swindle against the traditional perspective. An inho‐mogeneous multiscale analytical method is meticulously applied to derive a new conjugated non‐integrable coupled (via zeroth‐order factors) pair of variable‐coefficient inhomogeneous Korteweg de‐Vries Burger (i ‐KdVB) equations containing unique form of non‐uniform linear self‐consistent gradient‐driven sinks. A numerical illustrative scheme is procedurally constructed to examine the canonical fluctuations. It is seen that the eigenspectrum coevolves as electrostatic rarefactive damped oscillatory shock‐like structures and self‐gravitational compressive damped oscillatory shock‐like patterns. The irregular damping nature is attributable to the i ‐KdVB sinks. The aperiodicity in the hybrid rapid small downstream wavetrains is speculated to be deep‐rooted in the quasi‐linear gravito‐electrostatic interplay. The phase‐evolutionary dynamics grow as atypical non‐chaotic fixed‐point attractors. We, finally, indicate tentative astronomical applications relevant in large‐scale cosmic structure formation aboard facts and faults. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Simple Approach to Generalization of Child‐Langmuir Law for Non‐Zero Injection Velocities in a Planar Diode
Authors: Ahmady H. , Mehrshahi E. , Ghergherehchi M. 
Published: November 2016

AbstractAn absolutely straightforward study is presented to characterize the space‐charge limited region in a planar diode with non‐zero uniform initial velocity which brings about Liu's result. Unlike Liu's work, our approach is free of mathematical intricacies. In addition to its great simplicity, the presented method gives a good physical insight about the problem. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Lagged cumulative spruce budworm defoliation affects the risk of fire ignition in Ontario, Canada
Authors: James Patrick M. A. , Robert Louis‐Etienne , Wotton B. Mike , Martell David L. , Fleming Richard A. 
Published: November 2016

AbstractDetailed understanding of forest disturbance interactions is needed for effective forecasting, modelling, and management. Insect outbreaks are a significant forest disturbance that alters forest structure as well as the distribution and connectivity of combustible fuels at broad spatial scales. The effect of insect outbreaks on fire activity is an important but contentious issue with significant policy consequences. The eastern spruce budworm (Choristoneura fumiferana) is a native defoliating insect in eastern North America whose periodic outbreaks create large patches of dead fir and spruce trees. Of particular concern to fire and forest managers is whether these patches represent an increased fire risk, if so, for how long, and how the relationship between defoliation and fire risk varies through space and time. Previous work suggests a temporary increase in flammability in budworm‐killed forests, but regional and seasonal variability in these relationships has not been examined. Using an extensive database on historical lightning‐caused fire ignitions and spruce budworm defoliation between 1963 and 2000, we assess the relative importance of cumulative defoliation and fire weather on the probability of ignition in Ontario, Canada. We modeled fire ignition using a generalized additive logistic regression model that accounts for temporal autocorrelation in fire weather. We compared two ecoregions in eastern Ontario (Abitibi Plains) and western Ontario (Lake of the Woods) that differ in terms of climate, geomorphology, and forest composition. We found that defoliation has the potential to both increase and decrease the probability of ignition depending on the time scale, ecoregion, and season examined. Most importantly, we found that lagged spruce budworm defoliation (8–10 yr) increases the risk of fire ignition whereas recent defoliation (1 yr) can decrease this risk. We also found that historical defoliation has a greater influence on ignition risk during the spring than during the summer fire season. Given predicted increases in forest insect activity due to global change, these results represent important information for fire management agencies that can be used to refine existing models of fire risk.
Atopic dermatitis: A tale of two distinct pathomechanisms that make you itch
Authors: Knol Edward F. , Hijnen DirkJan 
Published: November 2016

Atopic dermatitis (AD) or eczema is the most common chronic inflammatory skin disease. It is a multifactorial disease with local and systemic immune changes. Current therapies focus on restoring the local skin barrier or inhibiting immune responses. In this issue of the European Journal of Immunology, Sehra et al. [Eur. J. Immunol. 2016. 46:2609–2613] describe a mouse model with T‐cell‐specific expression of constitutively active Stat6 in Flaky tail mice, which have mutations in the Flg and Tmem79 genes. The authors describe that it is the combination of changes in the skin barrier proteins filaggrin and Tmem79, together with Th2 cytokine signaling in the constitutively active Stat6 transgene, that drives the immune‐pathomechanism in AD. These results are consistent with human studies where it is demonstrated that diminished filaggrin expression in skin is a predisposing factor for AD, but is neither required nor sufficient for disease indicating that additional factors are required for disease development. The current mouse model by Sehra et al. could be instrumental in evaluation new therapeutic strategies for AD.
1st EMBL/DFG Women in Science Network Conference Heidelberg 2016
Authors: Stripecke Renata , Gouttefangeas Cécile , Förster Irmgard 
Published: November 2016

AbstractThe 1st EMBL/DFG Women in Science (WiS) Conference “From Genes, Cells and the Immune System towards Therapies” was held on 19th – 20th September 2016 in Heidelberg, Germany. The WiS conference was funded by nine Collaborative Research Centers (CRCs) of the German Research Council (Deutsche Forschungsgemeinschaft, DFG; Table 1) and benefited from an outstanding hosting environment at the Advanced Training Center of the European Molecular Biology Laboratory (EMBL). Scientific talks focused at genetic, cellular and immunologic mechanisms, and immune therapy, and progress from all stages of development covering basic research to clinical developments was described. The presentations were embedded between structured networking sessions and a round table discussion with representatives of the DFG, EMBL, European Molecular Biology Organisation (EMBO), and the German Society of Immunology (DGfI).
A Newly Competitive Electrochemical Sensor for Sensitive Determination of Chrysin Based on Electrochemically Activated Ta2O5 Particles Modified Carbon Paste Electrode
Authors: Xie Zhengkun , Wu Yongmei , Kai Sheng , Li Gaiping , Ye Baoxian 
Published: November 2016

AbstractA novel electrochemically activated doped Ta2O5 particles modified carbon paste electrode (EA‐Ta2O5‐CPE) was prepared and applied for selective and sensitive determination of chrysin. X‐ray diffraction (XRD), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) techniques and cyclic voltammetry (CV) were used to characterize the Ta2O5 particles and investigate the electrochemical response of the sensor. Compared with bare CPE, the doped Ta2O5 modified electrode got much more porous by electrochemical treatment and exhibited larger effective surface area, more reactive site and excellent electrochemical catalytic activity toward the oxidation of chrysin. Under optimum conditions by LSV, the oxidation peak currents responded to chrysin linearly over a concentration range from 5.0×10−8 to 7.0×10−6 mol L−1 with a detection limit of 2.0×10−8 mol L−1 (5.08 ng mL−1). The fabricated sensor showed anti‐interference ability against the biological common interferents (i.e. baicalein, baicalin) and provided to be reliable for the determination of chrysin in Chinese medicinal herb Oroxylum indicum and chrysin capsules samples with satisfactory results.
A Simple Electrochemical Aptamer Cytosensor for Direct Detection of Chronic Myelogenous Leukemia K562 Cells
Authors: Yu Tianxiao , Zhang Hui , Huang Zhenglan , Luo Zhenhong , Huang Ningshu , Ding Shijia , Feng Wenli 
Published: November 2016

AbstractA simple and rapid electrochemical aptamer cytosensor has been developed for direct detection of chronic myelogenous leukemia (CML) K562 cells based on a specific aptamer and a biotin conjugated concanavalin A (bio‐ConA) detection probe. The K562 cell could be specifically recognized by T2‐KK1B10 capture aptamer pre‐immobilized on gold modified electrode surface. Then, bio‐ConA was added in the reaction to identify K562 cell surface mannose, resulting in an aptamer‐K562 cell‐bio‐ConA sandwich complex. Finally, streptavidin conjugated alkaline phosphatase (ST‐ALP) combined with the bio‐ConA to catalyze α‐naphthyl (α‐NP) phosphate to form α‐naphthol which is highly electroactive at an operating voltage of 180 mV (vs. Ag/AgCl). Under optimum conditions, the DPV signals were proportional to the logarithm of K562 cell from 1×102 to 1×107 cells mL−1 with a detection limit of 79 cells mL−1. The cytosensor also exhibited high selectivity, stability and reproducibility. When applied to detect K562 cells in human blood samples, recoveries between 79.6 %–93.3 % were obtained, indicating the developed biosensor would be a potential alternative tool for CML K562 cell detection in real biological samples.
Combination of Flow Injection Analysis and Fast Scan Differential Pulse Voltammetry for the Determination of Antioxidants
Authors: Bavol Dmytro , Dejmkova Hana , Scampicchio Matteo , Zima Jiri , Barek Jiri 
Published: November 2016

AbstractFast‐scan differential pulse voltammetry (FSDPV) is an electroanalytical technique that uses high scan rate to record voltammograms within several milliseconds and ensures high temporal resolution. Here, a FSDPV on a glassy carbon working electrode in combination with a flow injection analysis (FIA) system was developed and characterized using the hydroquinone/quinone redox system. Later, enhanced resolution of the technique was confirmed with the parallel determination of caffeic acid and p‐coumaric acid. Finally, the optimized procedure has been applied for the first time to determine capsacinoids in chili pepper and total phenols in extra virgin olive oils. The proposed procedure is fast, simple, and enables the monitoring of complex samples in real‐time.
First Electroanalytical Studies of Profluralin with Square Wave Voltammetry Using Glassy Carbon Electrode
Authors: Smarzewska Sylwia , Jasińska Agnieszka , Ciesielski Witold , Guziejewski Dariusz 
Published: November 2016

AbstractThe electrochemical behaviour of profluralin (PFL) was investigated with square wave voltammetry (SWV) and cyclic voltammetry at bare and modified with graphene, graphene oxide, reduced graphene oxide, carbon nanotubes glassy carbon electrode. The influence of various factors such as pH, buffer composition, ionic surfactants and voltammetric parameters was studied. The best results in terms of signal shape and intensity were recorded in 0.04 M Britton‐Robinson buffer at pH 2.0 at −0.43 V versus Ag/AgCl. In acidic medium profluralin produces single cathodic signal of an irreversible nature. Observed peak (two superimposed signals from two nitro groups) is a result of PFL reduction controlled by diffusion processes. Linearity of peak currents (Ip) vs. concentrations of profluralin was found in the range of 1.0×10−7 to 1.0×10−6 M with a detection limit of 2.6×10−8 M using fast and sensitive SWV. The developed method has been applied for the quantitative analysis of profluralin in spiked environmental samples with very good average recoveries in the range from 98.6 to 99.9 % with a mean relative standard deviation of 4.0 %.
Passage of fiproles and imidacloprid from urban pest control uses through wastewater treatment plants in northern California, USA
Authors: Sadaria Akash M. , Sutton Rebecca , Moran Kelly D. , Teerlink Jennifer , Brown Jackson Vanfleet , Halden Rolf U. 
Published: November 2016

Abstract

Urban pest control insecticides—specifically fipronil and its 4 major degradates (fipronil sulfone, sulfide, desulfinyl, and amide), as well as imidacloprid—were monitored during drought conditions in 8 San Francisco Bay (San Francisco, CA, USA) wastewater treatment plants (WWTPs). In influent and effluent, ubiquitous detections were obtained in units of ng/L for fipronil (13–88 ng/L), fipronil sulfone (1–28 ng/L), fipronil sulfide (1–5 ng/L), and imidacloprid (58–306 ng/L). Partitioning was also investigated; in influent, 100% of imidacloprid and 62 ± 9% of total fiproles (fipronil and degradates) were present in the dissolved state, with the balance being bound to filter-removable particulates. Targeted insecticides persisted during wastewater treatment, regardless of treatment technology utilized (imidacloprid: 93 ± 17%; total fiproles: 65 ± 11% remaining), with partitioning into sludge (3.7–151.1 μg/kg dry wt as fipronil) accounting for minor losses of total fiproles entering WWTPs. The load of total fiproles was fairly consistent across the facilities but fiprole speciation varied. This first regional study on fiprole and imidacloprid occurrences in raw and treated California sewage revealed ubiquity and marked persistence to conventional treatment of both phenylpyrazole and neonicotinoid compounds. Flea and tick control agents for pets are identified as potential sources of pesticides in sewage meriting further investigation and inclusion in chemical-specific risk assessments. Environ Toxicol Chem 2017;36:1473–1482. © 2016 SETAC