bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: High‐Pressure Synthesis and Crystal Structures of the Strontium Oxogallates Sr2Ga2O5 and Sr5Ga6O14.
Authors: Kahlenberg Volker , Goettgens Valerie , Mair Philipp , Schmidmair Daniela 
Published: July 2015

AbstractSingle‐crystals of Sr2Ga2O5 (I) and Sr5Ga6O14 (II) are prepared by reaction of a 2:1 molar mixture of SrCO3 and Ga2O3 in air (Pt crucible, 1100 °C, 1 d) and subsequent hot‐press annealing (piston‐cylinder apparatus, 1.5 GPa/3.0 GPa, 1000 °C, 72 h).
ChemInform Abstract: On the Ambient Pressure Polymorph of K2Ca3Si3O10 — An Unusual Mixed‐Anion Silicate and Its Structural and Spectroscopic Characterization.
Authors: Schmidmair Daniela , Kahlenberg Volker , Perfler Lukas , Tribus Martina , Hildebrandt Johannes , Toebbens Daniel M. 
Published: July 2015

AbstractAn ambient pressure polymorph of K2Ca3Si3O10 is prepared by firing and annealing a 1:3:3 molar mixture of K2CO3, CaCO3, and amorphous SiO2 (corundum boat, 900 °C, 24 h).
ChemInform Abstract: Crystal Structure of Barium Perchlorate Anhydrate, Ba(ClO4)2, from Laboratory X‐Ray Powder Data.
Authors: Lee Jeonghoo H. , Kang Ji Hoon , Lim Sung‐Chul , Hong Seung‐Tae 
Published: July 2015

AbstractThe title compound is obtained by heating Ba(ClO4)2·xH2O at 423 K in vacuum for 6 h.
ChemInform Abstract: Crystal Structure of the Fe‐Member of Usovite.
Authors: Weil Matthias 
Published: July 2015

AbstractCrystals of Ba2CaFeAl2F14 (idealized composition) are obtained by solid state reaction of a stoichiometric mixture of BaF2, CaF2, and AlF3 (Mo foil covered C tool steel reactor, 1173 K, 1 d; cooling to 973 K with a rate of 10 K/h).
ChemInform Abstract: Effects of Te(IV) Oxo‐Anion Incorporation into Thorium Molybdates and Tungstates.
Authors: Xiao Bin , Klinkenberg Martina , Bosbach Dirk , Suleimanov Evgeny V. , Alekseev Evgeny V. 
Published: July 2015

AbstractCompounds (IV), (V), (VII), and (VIII) are characterized by powder and single crystal XRD, SEM/EDS, and Raman spectroscopy.
ChemInform Abstract: Highly Regio‐ and Stereoselective Hydrosilylation of β‐Fluoroalkylated α,β‐Unsaturated Ketones.
Authors: Ikeda Natsumi , Konno Tsutomu 
Published: July 2015

AbstractCo‐catalyzed hydrosilylation of β‐fluoroalkylated unsaturated ketones (I) affords the hydrosilylated adducts (III) in a highly regio‐ and stereoselective fashion.
ChemInform Abstract: Investigation on the Asymmetric Addition Reactions Between Varied Nonaromatic Aldehydes and Diethylzinc Catalyzed by Chiral Phosphoramide and Thiophosphorodiamide Ligands.
Authors: Li Fangling , Huang Huayin , Zong Hua , Bian Guangling , Song Ling 
Published: July 2015

AbstractBoth ligands QUI and TPA show high efficiency in the title reaction.
ChemInform Abstract: Pyrimidine‐Derived Prolinamides as Recoverable Bifunctional Organocatalysts for Enantioselective Inter‐ and Intramolecular Aldol Reactions under Solvent‐Free Conditions.
Authors: Vizcaino‐Milla Pascuala , Sansano Jose M. , Najera Carmen , Fiser Bela , Gomez‐Bengoa Enrique 
Published: July 2015

AbstractChiral prolinamide and 1,2‐aminocyclohexane derived pyrimidines are developed and applied as recyclable catalyst for the cross‐aldol reaction of ketones and aldehydes.
ChemInform Abstract: Photocatalytic Secondary Amine Synthesis from Azobenzenes and Alcohols on TiO2 Loaded with Pd Nanoparticles.
Authors: Selvam Kaliyamoorthy , Sakamoto Hirokatsu , Shiraishi Yasuhiro , Hirai Takayuki 
Published: July 2015

AbstractAn easily recoverable and recyclable heterogeneous catalyst renders possible the synthesis of secondary amines from azobenzenes (I) and alcohols (II) or (IV) under mild reaction conditions.
ChemInform Abstract: Efficient Synthesis of 2,3‐Dimethoxy‐5‐methyl‐6‐morpholinomethyl‐1,4‐benzoquinone Hydrochloride.
Authors: Wang Jin , Liao Teng‐huo‐sheng , Yang Jian 
Published: July 2015

AbstractThe title compound (VII) is prepared by a reaction sequence starting from 2,3,4,5‐tetramethoxytoluene (I) via Blanc reaction, oxidation and alkylation with 63% overall yield.
ChemInform Abstract: Copper‐Catalyzed Direct Transformation of Secondary Allylic and Benzylic Alcohols into Azides and Amides: An Efficient Utility of Azide as a Nitrogen Source.
Authors: Rokade Balaji V. , Gadde Karthik , Prabhu Kandikere Ramaiah 
Published: July 2015

AbstractA one‐pot formation of azides from allylic alcohols (I) and (III) followed by Cu(II)‐perchlorate and DDQ mediated azide decomposition results in the direct synthesis of diarylamides.
ChemInform Abstract: Tandem Synthesis of Bicyclic ortho‐Aminocarbonitrile Derivatives in Ionic Liquids.
Authors: Wan Y. , Zhang X.‐X. , Zhao L.‐L. , Wang C. , Chen L.‐F. , Liu G.‐X. , Huang S.‐Y. , Yue S.‐N. , Zhang W.‐l. , Wu H. 
Published: July 2015

AbstractAn efficient synthesis of 2‐aminonaphthalenetricarbonitriles (IV) (15 examples) via multicomponent condensation of cyclohexanone with aromatic aldehydes and two equivalents of malononitrile is given.
ChemInform Abstract: The Asymmetric Synthesis of CF3‐Containing Spiro[pyrrolidin‐3,2′‐oxindole] Through the Organocatalytic 1,3‐Dipolar Cycloaddition Reaction.
Authors: Yan Wenjin , et al.  
Published: July 2015

AbstractA series of unprecedented ketimines, obtained by condensation of isatins with trifluoroethylamine, is used in an asymmetric, organocatalyzed 1,3‐dipolar cycloaddition reaction providing trifluoromethylated spirooxindoles bearing four contiguous stereocenters.
ChemInform Abstract: Nitrative Spirocyclization Mediated by TEMPO: Synthesis of Nitrated Spirocycles from N‐Arylpropiolamides, tert‐Butyl Nitrite and Water.
Authors: Yang Xu‐Heng , Ouyang Xuan‐Hui , Wei Wen‐Ting , Song Ren‐Jie , Li Jin‐Heng 
Published: July 2015

AbstractA new protocol for nitrative spirocyclization of alkynes is described.
ChemInform Abstract: Unusual 1,2‐Aryl Migration in Pd(II)‐Catalyzed Aza‐Wacker‐Type Cyclization of 2‐Alkenylanilines.
Authors: Youn So Won , Lee So Ra 
Published: July 2015

AbstractThe unprecedented title transformation affords C3‐substituted indole derivatives (III) and (VI) and is found to be operative across a variety of substrates with predictable migratory aptitude.
ChemInform Abstract: Rhodium‐Catalyzed Direct C7 Alkynylation of Indolines.
Authors: Jin Ning , Pan Changduo , Zhang Honglin , Xu Pan , Cheng Yixiang , Zhu Chengjian 
Published: July 2015

AbstractAn efficient rhodium(III)‐catalyzed direct C‐7 alkynylation of indoline C—H bonds with the alkynylated hypervalent iodine reagents is developed.
ChemInform Abstract: Metal‐Free [3 + 2] Cycloaddition of Azides with Tf2C=CH2 for the Regioselective Preparation of Elusive 4‐(Trifluoromethylsulfonyl)‐1,2,3‐triazoles.
Authors: Alcaide Benito , Almendros Pedro , Lazaro‐Milla Carlos 
Published: July 2015

AbstractStarting material (I) forms in situ the reactive Tf2C=CH2.
ChemInform Abstract: Al(OTf)3‐Catalyzed Preparation of 4‐Hydroxy‐3‐propargylic Coumarins and Subsequent Regioselective Cyclization Towards Furo‐ or Pyrano[3,2‐c]coumarins.
Authors: Ponra Sudipta , Gohain Mukut , van Tonder Johannes H. , Bezuidenhoudt Barend C. B. 
Published: July 2015

AbstractThe potentially bioactive furo[3,2‐c]coumarin or pyrano[3,2‐c]coumarin derivatives (IV) and (V), resp., are obtained by organocatalytic (DBU) or metallo‐organocatalytic (CuBr/NMM) cyclization of readily accessible 4‐hydroxy‐3‐(prop‐2‐ynyl)coumarins (III).
ChemInform Abstract: Gold(I)‐Catalyzed Oriented Assembly of Dihydropyridines.
Authors: Li Yufeng , Wu Zhengguang , Pan Yi , Huang Hao , Shi Jie , Bu Hongzhong , Ma Hongfei , Liang Yingying , Huang Binbin 
Published: July 2015

AbstractMultisubstituted dihydropyridines (III) are efficiently obtained from methyl propiolate (II) and propargylamines (I) with high regioselectivity.
ChemInform Abstract: Stereo‐ and Regioselective [2 + 2] Photocycloaddition in a Bis(styrylquinoline) Dyad.
Authors: Budyka Mikhail F. , Gavrishova Tatiana N. , Potashova Natalia I. , Chernyak Alexander V. 
Published: July 2015

AbstractThe newly synthesized dyad (III) connecting two styrylquinoline chromophores by an o‐xylylene bridge undergoes [2 + 2] photocycloaddition with quantitative formation of a single rctt cyclobutane derivative (IV).
ChemInform Abstract: Clerodane Type Diterpene as a Novel Antifungal Agent from Polyalthia longifolia var. Pendula.
Authors: Bhattacharya Asish K. , Chand Hemender R. , John Jyothis , Deshpande Mukund V. 
Published: July 2015

AbstractDiterpene (I) is isolated from the methanolic extract of the leaves of Polyalthia longifolia var.
ChemInform Abstract: Arylsulfonylmethyl Isocyanides: A Novel Paradigm in Organic Synthesis
Authors: Kaur Tanpreet , Wadhwa Preeti , Sharma Anuj 
Published: July 2015

AbstractReview: [advancements in the application of p‐tosylmethyl isocyanide (TosMIC), as a privileged reagent to access biologically relevant fused heterocycles and some natural products; 84 refs.
ChemInform Abstract: Effects of Morphology on the Electrochemical Performances of Li3V2(PO4)3 Cathode Material for Lithium Ion Batteries
Authors: Wei Chuanliang , He Wen , Zhang Xudong , Xu Fengxiu , Liu Qinze , Sun Caiyun , Song Xin 
Published: July 2015

AbstractReview: effects of morphology modifications such as porous structure, spherical structure, core—shell structure, rod‐like structure, plate‐like structure, nanofiber structure and flower‐like structures; 125 refs.
The NEWT platform: an extensible plugin framework for creating ReSTful HPC APIs
Authors: Cholia Shreyas , Sun Terence 
Published: July 2015

SummaryThis work describes the NEWT platform, a framework for creating ReSTful web APIs for high‐performance scientific computing. The NEWT platform is designed to be a customizable framework that can be deployed at a high‐performance computing center and enables access to various backend resources and services through a common web API. The goal of this effort is to create a service that can be plugged into multiple backend resources and can easily be extended while presenting a standard interface to the consumer with common semantics. This effort also updates the NEWT API that has been deployed at the National Energy Research Scientific Computing Center since 2010 and provides additional structure and consistency across the API. Copyright © 2015 John Wiley & Sons, Ltd.
Nanostructured Double Perovskite Cathode With Low Sintering Temperature For Intermediate Temperature Solid Oxide Fuel Cells
Authors: Kim Seona , Jun Areum , Kwon Ohhun , Kim Junyoung , Yoo Seonyoung , Jeong Hu Young , Shin Jeeyoung , Kim Guntae 
Published: July 2015

AbstractThis study focuses on reducing the cathode polarization resistance through the use of mixed ionic electronic conductors and the optimization of cathode microstructure to increase the number of electrochemically active sites. Among the available mixed ionic electronic conductors (MIECs), the layered perovskite GdBa0.5Sr0.5CoFeO5+δ (GBSCF) was chosen as a cathode material for intermediate temperature solid oxide fuel cells owing to its excellent electrochemical performance and structural stability. The optimized microstructure of a GBSCF–yttria‐stabilized zirconia (YSZ) composite cathode was prepared through an infiltration method with careful control of the sintering temperature to achieve high surface area, adequate porosity, and well‐organized connection between nanosized particles to transfer electrons. A symmetric cell shows outstanding results, with the cathode exhibiting an area‐specific resistance of 0.006 Ω cm2 at 700 °C. The maximum power density of a single cell using Ce–Pd anode with a thickness of ∼80 μm electrolyte was ∼0.6 W cm−2 at 700 °C.
Age‐related changes in emotional face processing across childhood and into young adulthood: Evidence from event‐related potentials
Authors: MacNamara Annmarie , Vergés Alvaro , Kujawa Autumn , Fitzgerald Kate D. , Monk Christopher S. , Phan K. Luan 
Published: July 2015

ABSTRACTSocio‐emotional processing is an essential part of development, and age‐related changes in its neural correlates can be observed. The late positive potential (LPP) is a measure of motivated attention that can be used to assess emotional processing; however, changes in the LPP elicited by emotional faces have not been assessed across a wide age range in childhood and young adulthood. We used an emotional face matching task to examine behavior and event‐related potentials (ERPs) in 33 youth aged 7–19 years old. Younger children were slower when performing the matching task. The LPP elicited by emotional faces but not control stimuli (geometric shapes) decreased with age; by contrast, an earlier ERP (the P1) decreased with age for both faces and shapes, suggesting increased efficiency of early visual processing. Results indicate age‐related attenuation in emotional processing that may stem from greater efficiency and regulatory control when performing a socio‐emotional task. © 2015 Wiley Periodicals, Inc. Dev Psychobiol 58:27–38, 2016.
Extreme rainfall and its impact on cultivated landscapes with particular reference to Britain
Authors: Boardman John 
Published: July 2015

AbstractExtreme rainfall events (>50 mm day−1) falling on cultivated land which is relatively bare of vegetation cover, typically give rise to networks of rills and gullies with ephemeral gullies in depressions and valley bottoms. Farming practices such as the removal of field boundaries, the presence of wheelings and rolled surfaces encourage runoff. The coincidence of vulnerable crops such as maize, potatoes and sugar beet with erodible soils and sloping sites may lead to high rates of erosion associated with single events or wet seasons. Not all extreme rainfall events lead to runoff and erosion, this depends on timing with respect to the growing crop. Rates of erosion associated with extreme events may be high but when placed in a long‐term temporal context, they tend to be quite low. Extreme events frequently lead to off‐site impacts most notably muddy flooding of properties and the pollution of watercourses. Landscapes may be protected from extreme events by standard soil conservation techniques; off‐site impacts may similarly be alleviated by flood‐protection measures. In both cases, the challenge is to put in place adequate economic incentives, social pressures and governmental policy frameworks to incentivise effective action. Predicted rainfall changes in the future include wetter winters and increases in rain per rain‐day. In this case, the risk of erosion on cultivated land will increase. However, erosion mitigation strategies should still address the issue of the incidence of high‐risk crops on vulnerable sites. Copyright © 2015 John Wiley & Sons, Ltd.
Effect of ammonia stress on nitrogen metabolism of Ceratophyllum demersum
Authors: Gao Jingqing , Li Linshuai , Hu Zhiyuan , Yue Hui , Zhang Ruiqin , Xiong Zhiting 
Published: July 2015

Abstract

The objective of the present study was to determine the effect of total ammonia N concentration and pH on N metabolism of Ceratophyllum demersum and to evaluate stress as a result of inorganic N enrichment in the water column on submerged macrophytes. Carefully controlled pH values distinguished between the effects of un-ionized NH3 and ionized NH4+. The results showed that the most obvious consequence of ammonia addition was an overall increase in ammonia content and decrease in nitrate content in all tissues of fertilized plants. The activities of nitrate reductase and glutamine synthetase were inhibited by long-term ammonia addition. At the same time, ammonia addition significantly decreased soluble protein content and increased free amino acid content in all treatments. Another clear effect of ammonia addition was a decrease in carbon reserves. Therefore, the authors concluded that increased ammonia availability could affect plant survival and lead to a decline in C. demersum proliferation through a decrease in their carbon reserves. This interaction between N and C metabolism helps to explain changes in benthic vegetation as a result of steadily increasing coastal water eutrophication. Environ Toxicol Chem 2016;35:205–211. © 2015 SETAC
Prediction of supercritical CO2/brine relative permeability in sedimentary basins during carbon dioxide sequestration
Authors: Tatar Afshin , Shokrollahi Amin , Lee Moonyong , Kashiwao Tomoaki , Bahadori Alireza 
Published: July 2015

AbstractThis study aims to accurately determine supercritical CO2/brine relative permeability, using a hybrid Genetic Algorithm‐Radial Basis Function (GA‐RBF) neural network. CO2 sequestration, along with some enhanced oil recovery (EOR) processes, demands an exact knowledge of relative permeability in order to ensure the viability of the operation. Previous studies have shown that errors in CO2/brine relative permeability data might result in a four‐fold error in injectivity estimation. This, as well as several recent studies regarding the relative permeability of CO2/brine systems, has indicated the importance of this parameter. The developed GA‐RBF model was determined to be in excellent accordance with experimental data, yielding average absolute relative deviations (AARD) of 4.66% and 2.11% for CO2 and brine relative permeability, respectively. In addition, comprehensive comparisons between classic models and the proposed GA‐RBF model have been carried out. Based on these comparisons, it may be concluded that the proposed model is superior to the classic method (simple correlation) in terms of its accuracy in determining the viability of CO2 sequestration operations. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd
A simple water balance model adapted for soil water repellency: application on Portuguese burned and unburned eucalypt stands
Authors: Nunes João Pedro , Malvar Maruxa , Benali Akli Ait , Rial Rivas María Ermitas , Keizer Jan Jacob 
Published: July 2015

AbstractSoil water repellency can impact soil hydrology, overland flow generation and associated soil losses. However, current hydrological models do not take it into account, which creates a challenge in repellency‐prone regions. This work focused on the adaptation for soil water repellency of a daily water balance model. Repellency is estimated from soil moisture content using site‐specific empirical relations and used to limit maximum soil moisture. This model was developed and tested using approximately 2 years of data from one long‐unburned and two recently burned eucalypt plantations in northern Portugal, all of which showed strong seasonal soil water repellency cycles. Results indicated important improvements for the burned plantations, with the Nash–Sutcliffe efficiency increasing from −0.55 and −0.49 to 0.55 and 0.65. For the unburned site, model performance was already good without the modification and efficiency only improved slightly from 0.71 to 0.74, mostly due to the better simulation of delayed soil wetting after dry periods. Results suggested that even a simple approach to simulate soil water repellency can markedly improve the performance of hydrological models in eucalypt forests, especially after fire. Copyright © 2015 John Wiley & Sons, Ltd.
Monitoring the laccase reaction of vanillin and poplar hydrolysate
Authors: Sóti Valentin , Jacquet Nicolas , Apers Sandra , Richel Aurore , Lenaerts Silvia , Cornet Iris 
Published: July 2015

AbstractBACKGROUNDLaccase is an intensively researched enzyme for industrial use. Except for decolorization measurements, high performance liquid chromatography (HPLC) analysis is the conventional method for monitoring the phenolic removal during laccase enzyme reaction. This paper reports an investigation of the continuous UV absorbance follow‐up of the laccase reaction with steam pretreated poplar hydrolysate.RESULTSVanillin was used as a model substrate and lignocellulose xylose rich fraction (XRF) as a biologically complex substrate for laccase detoxification. The reaction was followed by HPLC‐UV as well as by UV spectrometric measurements. Results suggest that the reaction can be successfully monitored by measuring the change of UV absorbance at 280 nm, without previous compound separation. In the case of XRF experiments the spectrophotometric follow‐up is especially useful, as HPLC analysis takes a long time and provides less information than in the case of single substrates. The method seems to be suitable for optimization and process control.CONCLUSIONThe results obtained can help to construct a fast, easy and straightforward monitoring system for laccase–phenolic substrate reactions. © 2015 Society of Chemical Industry
Elevated serum creatinine and low albumin are associated with poor outcomes in patients with liposarcoma
Authors: Panotopoulos Joannis , Posch Florian , Funovics Philipp T. , Willegger Madeleine , Scharrer Anke , Lamm Wolfgang , Brodowicz Thomas , Windhager Reinhard , Ay Cihan 
Published: July 2015

ABSTRACTLow serum albumin levels and impaired kidney function have been associated with decreased survival in patients with a variety of cancer types. In a retrospective cohort study, we analyzed 84 patients with liposarcoma treated at from May 1994 to October 2011. Uni‐ and multivariable Cox proportional hazard models and competing risk analyses were performed to evaluate the association between putative biomarkers with disease‐specific and overall survival. The median age of the study population was 51.7 (range 19.6–83.8) years. In multivariable analysis adjusted for AJCC tumor stage, serum creatinine was highly associated with disease‐specific survival (Subdistribution Hazard ratio (SHR) per 1 mg/dl increase = 2.94; 95%CI 1.39–6.23; p = 0.005). High albumin was associated with improved overall and disease‐specific survival (Hazard Ratio (HR) per 10 units increase = 0.50; 95%CI 0.26–0.95; p = 0.033 and SHR = 0.64; 95%CI 0.42–1.00; p = 0.049). The serum albumin‐creatinine‐ratio emerged to be associated with both overall and disease‐specific survival after adjusting for AJCC tumor stage (HR = 0.95; 95%CI 0.92–0.99; p = 0.011 and SHR = 0.96; 95%CI 0.93–0.99; p = 0.08). Our study provides evidence for a tumor‐stage‐independent association between higher creatinine and lower albumin with worse disease‐specific survival. Low albumin and a high albumin‐creatinine‐ratio independently predict poor overall survival. Our work identified novel prognostic biomarkers for prognosis of patients with liposarcoma. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:533–538, 2016.
Epidural analgesia does not influence anastomotic leakage incidence after open colorectal surgery for cancer: A retrospective study on 1,474 patients
Authors: Piccioni Federico , Mariani Luigi , Negri Marta , Casiraghi Claudia , Belli Filiberto , Leo Ermanno , Langer Martin 
Published: July 2015

BackgroundAnastomotic leakage is a major cause of morbidity after colorectal surgery. Epidural analgesia is the most effective method for postoperative pain relief after major abdominal surgery. Anyhow, its effect on anastomotic leakage rate is still controversial. This study aimed to compare epidural versus intravenous analgesia as risk factor for anastomotic leakage requiring reoperation in patients undergoing open colorectal surgery for cancer.MethodsA retrospective study on 1,474 patients was performed. The Cox proportional hazards model was used to study the relation between primary and secondary factors of risk and anastomotic leakage occurrence within 30 days after elective operation.ResultsOverall 30‐day anastomotic leakage requiring reoperation was 4.9% (95%CI: 3.8–6.0%). No difference in anastomotic leakage occurrence was observed between the epidural analgesia group and the intravenous analgesia group (Hazard ratio: 0.94; 95%CI: 0.53–1.67%; P = 0.8338). Females had a rate of anastomotic leakage 43% lower than males (P = 0.0301). The diverting stoma resulted to be protective for anastomotic leakage occurrence (P = 0.0052). AL significantly increased postoperative median length of stay but not in‐hospital mortality.ConclusionsEpidural analgesia does not influence the AL risk after open colorectal surgery for cancer. J. Surg. Oncol. 2015 111:225–230. © 2015 Wiley Periodicals, Inc.