bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Toward Pyridine—Heterocycle Patterns Through Prins and Aza‐Prins Cyclizations: Application to a Short Synthesis of (.+‐.)‐Anabasine.
Authors: Colin Olivier , Greck Christine , Prim Damien , Thomassigny Christine 
Published: March 2015

AbstractThe products are obtained as inseparable mixtures of two regioisomers and, if possible, diastereomers.
ChemInform Abstract: Synthesis of Multicyclic Heterocycles Initiated by C—H Bond Activation Along with “Rollover” Using a Rh(III) Catalyst.
Authors: Shibata Takanori , Takayasu Satoshi 
Published: March 2015

AbstractA C—H bond activation along with “rollover” as a new approach for a multicyclic heterocycle synthesis is developed.
ChemInform Abstract: A Facile Clean Synthesis of Pyrido[2,3‐d]pyrimidine and Their Derivatives in Ionic Liquids.
Authors: Yadav Ashok K. , Gupta Manisha 
Published: March 2015

AbstractChalcones react with malononitrile in ionic liquid affording 2‐amino‐3‐cyano‐4,6‐disubstituted pyridines (III) as precursor for efficient syntheses of a new type of pyrido[2,3‐d]pyrimidine derivatives.
ChemInform Abstract: Synthesis of Novel Isoxazolo[2“,3”:1′,2′]pyrimido[4′,5′:4,5]pyrimido [6,1‐b]quinazoline‐8‐ones and Their in vitro Anticancer and Antimicrobial Activities.
Authors: Rajanarendar E. , Kishore B. , Ramakrishna S. , Nagaraju D. , Venkateshwarlu P. 
Published: March 2015

AbstractCompounds (VIIb) and (VIIc) show potent anticancer and antimicrobial activities comparable to the standard drugs.
ChemInform Abstract: Catalyst‐Free Access to Pseudo Multi‐Component Synthesis of Benzopyranopyrimidines.
Authors: Shaikh T. S. , Patil J. D. , Gaikwad D. S. , Hegade P. G. , Patil P. B. , Undale K. A. , Mane M. M. , Pore D. M. 
Published: March 2015

AbstractVarious salicylaldehydes (I) react with secondary amines (II) and malononitrile (III) affording benzopyranopyrimidines (IV) (12 examples) with intense fluorescence emission behavior under mild reaction conditions.
ChemInform Abstract: A Highly Efficient Heterogeneous Copper‐Catalyzed Cascade Reaction of 2‐Halobenzoic Acids and Amidines Leading to Quinazolinones.
Authors: He Wen , Zhao Hong , Yao Ruiya , Cai Mingzhong 
Published: March 2015

AbstractThe easily accessible heterogenous copper catalyst can be easily recovered by simple filtration and reused for at least 10 times without any decrease in activity.
ChemInform Abstract: The Rearrangement of Cyclopropylketone Arylhydrazones. Synthesis of Tryptamines and Tetrahydropyridazines.
Authors: Salikov Rinat F. , Belyy Aleksandr Yu. , Tomilov Yury V. 
Published: March 2015

AbstractThe rearrangement of cyclopropylketone arylhydrazones, either prepared in situ from ketones and hydrazines or used directly, results in the formation of either two or one product, depending on the substituents of the substrates.
ChemInform Abstract: Guanidinate Stabilized Germanium(II) and Tin(II) Amide Complexes and Their Catalytic Activity for Aryl Isocyanate Cyclization.
Authors: Barman Milan Kr , Baishya Ashim , Peddarao Thota , Nembenna Sharanappa 
Published: March 2015

AbstractNewly developed catalysts are shown to be superior to known catalysts in the cyclotrimerization of arylisocyanates.
ChemInform Abstract: A New and Facile Tetrachlorosilane‐Promoted One‐Pot Condensation for the Synthesis of a Novel Series of Tetracyclic 1,5‐Thiazepines.
Authors: Khatab Tamer K. , El‐Bayouki Khairy A. M. , Basyouni Wahid M. 
Published: March 2015

AbstractA facile protocol is developed for the cyclocondensation of fused cyclic ketones, aromatic aldehydes and 2‐aminothiophenol to form 1,5‐thiazepine derivatives
ChemInform Abstract: Efficient Synthesis of Jolkinolides A and B from Steviol.
Authors: Zhu Chang‐Zhen , Wang Ke , Zhang Meng‐han , Zhang Da‐Yong , Wu Yang‐Chang , Wu Xiao‐Ming , Hua Wei‐Yi 
Published: March 2015

AbstractThe cytotoxic activities of (I) and (II) are evaluated showing that (II) has medium antiproliferative activity.
ChemInform Abstract: Sesquiterpenoids and Lignans from the Roots of Syringa pinnatifolia.
Authors: Zhang Ze‐Ming , Wang Chun‐Hua , Zeng Xiao‐Jie , Qiu Qiu , Tang Wei , Li Guo‐Qiang , Li Yao‐Lan , Wang Guo‐Cai 
Published: March 2015

AbstractTwo new sesquiterpenoids, pinnatifone A (I) and B (II), and two new lignans, pinnatifolin (III) and isopinnatifolin (IV), are isolated along with six known lignans from the roots of the title species.
ChemInform Abstract: Curvulamine, a New Antibacterial Alkaloid Incorporating Two Undescribed Units from a Curvularia Species.
Authors: Han Wen Bo , Lu Yan Hua , Zhang Ai Hua , Zhang Gao Fei , Mei Ya Ning , Jiang Nan , Lei Xinxiang , Song Yong Chun , Ng Seik Weng , Tan Ren Xiang 
Published: March 2015

AbstractCurvulamine is more selectively antibacterial than tinidazole.
ChemInform Abstract: Asymmetric Synthesis of (‐)‐Brevipolide H Through Cyclopropanation of the α,β‐Unsaturated Ketone.
Authors: Lin Jing‐Wen , Kurniawan Yudhi Dwi , Chang Wen‐Jung , Leu Wohn‐Jenn , Chan She‐Hung , Hou Duen‐Ren 
Published: March 2015

AbstractThe optical antipode to natural (+)‐brevipolide H is prepared for the first time.
ChemInform Abstract: Trichiconins A—C, Limonoids with New Carbon Skeletons from Trichilia connaroides.
Authors: Liu Cui‐Ping , Xu Jin‐Biao , Han Ying‐Shan , Wainberg Mark A , Yue Jian‐Min 
Published: March 2015

AbstractTrichiconis B (IIa) and C (IIb) exhibit modest anti‐HIV activities.
ChemInform Abstract: Advances in Catalytic Enantioselective Fluorination, Mono‐, Di‐, and Trifluoromethylation, and Trifluoromethylthiolation Reactions
Authors: Yang Xiaoyu , Wu Tao , Phipps Robert J. , Toste F. Dean 
Published: March 2015

AbstractReview: 211 refs.
ChemInform Abstract: Indenofluorene Congeners: Biradicaloids and Beyond
Authors: Shimizu Akihiro , Nobusue Shunpei , Miyoshi Hirokazu , Tobe Yoshito 
Published: March 2015

AbstractReview: synthesis, molecular structures, and physical properties relevant to biradical character of indenofluorene isomers; 60 refs.
ChemInform Abstract: Electrospun Nanofibers: A Prospective Electro‐Active Material for Constructing High Performance Li‐Ion Batteries
Authors: Aravindan Vanchiappan , Sundaramurthy Jayaraman , Suresh Kumar Palaniswamy , Lee Yun‐Sung , Ramakrishna Seeram , Madhavi Srinivasan 
Published: March 2015

AbstractReview: 95 refs.
Impedance Analysis of Inherently Redox‐Active Ionic‐Liquid‐Based Photoelectrochemical Cells: Charge‐Transfer Mechanism in the Presence of an Additional Redox Couple
Authors: Patel Dipal B. , Chauhan Khushbu R. , Mukhopadhyay Indrajit 
Published: March 2015

AbstractAn intensive electrochemical impedance study was carried out to understand the charge‐transfer processes in photoelectrochemical (PEC) cells based on ionic liquid (IL) electrolytes. Three different electrolytes were utilized to understand the role of redox species as well as the medium on the charge‐transfer mechanism. The negligible diffusion resistance, despite the presence of two different redox species in the case of Fe(CN)6−4/−3in IL, was explained on the basis of charge transfer between species of two different redox couples. Accordingly, the redox species are not required to travel through the bulk of the electrolyte for the removal of accumulated charges, as short‐range charge transfer between the IL and the Fe(CN)6−4/−3species facilitates the removal of accumulated charges. It is also shown that PEC cells utilizing dual redox couples are highly stable with larger photoelectrochmeical windows, >3 V.
Virtual network construction with K‐shortest path algorithm and optimization problems for robust physical networks
Authors: Urayama Yasuhiro , Tachibana Takuji 
Published: March 2015

SummaryIn network virtualization, it has been considered that virtual networks are constructed over a physical network where conventional data transmission services have been utilized. Here, virtual networks have to be constructed while keeping qualities of the conventional services. In this paper, we propose a new virtual network construction in order to construct many virtual networks while keeping the robustness of a physical network by using network resources effectively. The proposed method consists of three processes: K‐shortest path algorithm and Prim's minimum spanning tree algorithm, path splitting, and path migration. In the proposed method, at first, multiple topologies are designed by using the K‐shortest path algorithm and the Prim's MST algorithm according to the user's request. After the topology design is completed, an admission control with network robustness of the physical network is performed. Then, if one of the designed topologies can satisfy the construction conditions, a virtual network is constructed and provided with the user. Otherwise, the path splitting and path migration are performed. Here, the path splitting is utilized to design another topology of a virtual network and path migration is used to change the topologies of the virtual networks that have already been constructed. These processes are formulated as optimization problems and those are processed by solving the optimization problems. In numerical examples, we show that our proposed method can construct a higher number of virtual networks while keeping the robustness of a physical network by comparing with the conventional method where only the Kou–Markowsky–Berman algorithm is used. Copyright © 2015 John Wiley & Sons, Ltd.
Effects of Big Planar Anions on the Spin Transition of a Mononuclear Manganese(III) Complex with a Hexadentate Schiff‐Base Ligand
Authors: Wang Shi , Li Yong‐Hua , Huang Wei 
Published: March 2015

AbstractTwo new ion‐pair complexes [Mn(3‐MeO‐sal‐N‐1,5,8,12)][Ni(dmit)2] (1) and [Mn(3‐MeO‐sal‐N‐1,5,8,12)][Pt(mnt)2]·2CH3CN (2), based on the known six‐coordinate mononuclear Schiff‐base manganese(III) spin‐crossover complex [Mn(3‐MeO‐sal‐N‐1,5,8,12)]NO3, have been synthesized and structurally characterized. Their crystal structures indicate that increasing the size of the anion from NO3– to [Pt(mnt)2]– and [Ni(dmit)2]– leads to the dimerization of the cations and formation of alternating cation–anion stacks with loss of the most effective cation–anion interactions; only weak short contacts exist between the cations and anions. Magnetic measurements and variable‐temperature single‐crystal X‐ray crystallography analysis provided firm evidence for spin‐crossover (SCO) effects in 1. The magnetic susceptibility of compound 2 is typical of a simple paramagnet, and the manganese(III) complex cations remain in the high‐spin state in the temperature range 2–300 K.
Analysis of underivatized cellodextrin oligosaccharides by capillary electrophoresis with direct photochemically induced UV‐detection
Authors: Alinat Elodie , Jemmali Selma , Delaunay Nathalie , Archer Xavier , Gareil Pierre 
Published: March 2015

This work focuses on the development of a CE method allowing, for the first time, the simultaneous separation of the underivatized first seven cellodextrin oligomers (glucose, cellobiose, cellotriose, cellotetraose, cellopentaose, cellohexaose, and celloheptaose), with a view to analyze the hydrolysates obtained after partial acid depolymerization of nitrocellulose, and eight carbohydrates (ribose, xylose, fructose, mannose, galactose, maltose, lactose, and sucrose), which might be potential interfering compounds in explosives samples. Separation was achieved with a highly alkaline BGE containing sodium chloride and direct mid‐UV‐absorbance detection was performed after photo‐oxidation in the detection window. EOF was reversed to speed up the analysis using a dynamic capillary coating by hexadimethrine bromide. A central composite design was carried out to determine the effects of BGE conductivity and sodium hydroxide concentration on resolutions between neighboring peaks, and analysis time. A desirability analysis on modeled responses was applied to maximize resolutions and to minimize analysis time. The simultaneous analysis in 20 min total runtime of the 15 carbohydrates plus internal reference (naphthalene sulfonate) was carried out at 25°C with a BGE composed of 77.4 mM NaOH and 183 mM NaCl to adjust the conductivity at the optimum value. Finally, the resolution robustness was checked. This new method should also be of interest to monitor food and nonfood crop products.
Recent Progress on Printed Flexible Batteries: Mechanical Challenges, Printing Technologies, and Future Prospects
Authors: Gaikwad Abhinav M. , Arias Ana Claudia , Steingart Daniel A. 
Published: March 2015

AbstractTraditional printing methods offer the advantage of well‐matured technology, high accuracy of depositing inks over flexible substrates at high web speeds, and low cost of fabrication. The components of a battery—the current collectors, active layers, and separator—can all be deposited using conventional printing techniques by designing suitable inks. A combination of low thickness of printed electrodes, flexible packaging, battery architecture, and material properties makes printed batteries flexible. In this paper, we will discuss material challenges and mechanical limits of flexible printed batteries. We will review several printing techniques and present examples of batteries printed using these methods. In addition, we will briefly discuss other novel non‐printed compliant batteries that have unique mechanical form.
Practical aspects of p‐multigrid discontinuous Galerkin solver for steady and unsteady RANS simulations
Authors: Jiang Zhenhua , Yan Chao , Yu Jian , Yuan Wu 
Published: March 2015

SummaryEfficient and robust p‐multigrid solvers are presented for solving the system arising from high‐order discontinuous Galerkin discretizations of the compressible Reynolds‐Averaged Navier–Stokes (RANS) equations. Two types of multigrid methods and a multigrid preconditioned Newton–Krylov method are investigated, and both steady and unsteady algorithms are considered in this paper. For steady algorithms, a new strategy is introduced to determine the CFL number, which has been proved to be critical in achieving the effective and stable convergence for p‐multigrid methods. We also suggest a modified smoothing technique to further improve the efficiency of the algorithms. For unsteady algorithms, special attention has been paid to the cycling strategy and the full multigrid technique, and we point out a significant difference on the parameter selection for unsteady computations. The capabilities of the resulted solvers have been examined by performing steady and unsteady RANS simulations. Comparative assessment in terms of efficiency, robustness, and memory consumption are carried out for all solvers. Copyright © 2015 John Wiley & Sons, Ltd.
A kernel gradient free (KGF) SPH method
Authors: Huang C. , Lei J. M. , Liu M. B. , Peng X. Y. 
Published: March 2015

SummaryThe finite particle method (FPM) is a modified SPH method with high order accuracy while retaining the advantages of SPH in modeling problems with free surfaces, moving interfaces, and large deformations. In both SPH and FPM, kernel gradient is necessary in kernel and particle approximation of a field function and its derivatives. In this paper, a new FPM is presented, which only involves kernel function itself in kernel and particle approximation. The kernel gradient is not necessary in the whole computation, and this approach is thus referred to as a kernel gradient free (KGF) SPH method. This is helpful when a kernel function is not differentiable or the resultant kernel gradient is not sufficiently smooth, and thus it is more general in selecting a kernel function. Moreover, different from the original FPM with an asymmetric corrective matrix, in the new FPM, the resultant corrective matrix is symmetric, and this is advantageous in particle approximations. A series of numerical examples have been conducted to show the efficiencies of KGF‐SPH including one‐dimensional mathematical tests of polynomial functions with equal or variable smoothing length and two‐dimensional incompressible fluid flow of shear cavity. It is found that KGF‐SPH is comparable with FPM in accuracy and is flexible as SPH. Copyright © 2015 John Wiley & Sons, Ltd.
Baseline characteristic of patients presenting with lacunar stroke and cerebral small vessel disease may predict future development of depression
Authors: Pavlovic Aleksandra M. , Pekmezovic Tatjana , Zidverc Trajkovic Jasna , Svabic Medjedovic Tamara , Veselinovic Nikola , Radojicic Aleksandra , Mijajlovic Milija , Tomic Gordana , Jovanovic Zagorka , Norton Melanie , Sternic Nada 
Published: March 2015

ObjectiveCerebral small vessel disease (SVD) is associated with late‐onset depression and increases the risk for depression after stroke. We aimed to investigate baseline predictors of depression after long‐term follow‐up in patients with SVD, initially presenting with first‐ever lacunar stroke, free of depression and cognitive impairment.MethodsA total of 294 patients with SVD were evaluated 3–5 years after the qualifying event. We analyzed baseline demographic data, vascular risk factors, functional status expressed as a score on modified Rankin Scale (mRS), cognitive status, presence of depression, total number of lacunar infarcts and severity of white matter hyperintensities (WMH) on MRI with Age‐Related White Matter Changes scale total score (tARWMC) and Fazekas scale periventricular and deep subcortical scores.ResultsOn follow‐up, depression was registered in 117 (39.8%) SVD patients. At the baseline, patients with depression compared with non‐depressed were older (64.4 vs 60.9 years; p = 0.007), had higher mRS score (2.8 ± 0.7 vs 1.5 ± 0.7; p < 0.0001) and had more severe lesions on MRI scales (p < 0.0001 for all parameters). On follow‐up, depressed patients more frequently exhibited cognitive decline (75.2% depressed vs 56.5% non‐depressed; p = 0.003). No difference was detected in risk factor frequency between groups. Multivariate Cox regression analysis adjusted by age and gender revealed independent predictors of depression: baseline mRS >2 (HR 2.17, 95%CI 1.74–2.72; p < 0.0001) and tARWMC (HR 1.05, 95%CI 1.02–1.09; p = 0.005), and cognitive decline on follow‐up (HR 1.80, 95%CI 1.12–2.89; p = 0.015).ConclusionsBaseline functional status and severity of WMH and development of cognitive decline predict the occurence of late‐onset depression in patients with SVD. Copyright © 2015 John Wiley & Sons, Ltd.
Rates and patterns of thermal mixing at a small stream confluence under variable incoming flow conditions
Authors: Lewis Quinn W. , Rhoads Bruce L. 
Published: March 2015

AbstractConfluences are important locations for river mixing within drainage networks, yet few studies have examined in detail the dynamics of mixing within confluences. This study examines the influence of momentum flux ratio, the scale of the flow (cross‐sectional area) and the density differences between incoming flows on thermal mixing at a small stream confluence. Results reveal that rates and patterns of thermal mixing depend on event‐specific combinations of the three factors. The mixing interface at this confluence is generally distorted towards the mouth of the lateral tributary by strong helical motion associated with curvature of flow from the lateral tributary as it aligns with the downstream channel. As the momentum flux from the lateral tributary increases, mixing is enhanced because helical motion from the curving tributary flow expands over the width of the downstream channel. The cross‐sectional area of the flow is negatively correlated with mixing rates, suggesting that the amount of mixing over a fixed distance downstream of the confluence is inversely related to the scale of the flow. Density differences are not strongly related to rates of mixing. Results confirm that mixing rates within the region of confluent flow interaction can be highly variable among flow events with different incoming flow conditions, but that, in general, length scales of mixing are short, and rates of mixing are high at this small confluence compared with those typically documented at large‐river confluences. Copyright © 2015 John Wiley & Sons, Ltd.
Spatial uncertainty in bias corrected climate change projections and hydrogeological impacts
Authors: Seaby L. P. , Refsgaard J. C. , Sonnenborg T. O. , Højberg A. L. 
Published: March 2015

AbstractThe question of which climate model bias correction methods and spatial scales for correction are optimal for both projecting future hydrological changes as well as removing initial model bias has so far received little attention. For 11 climate models (CMs), or GCM/RCM – Global/Regional Climate Model pairing, this paper analyses the relationship between complexity and robustness of three distribution‐based scaling (DBS) bias correction methods applied to daily precipitation at various spatial scales. Hydrological simulations are forced by CM inputs to assess the spatial uncertainty of groundwater head and stream discharge given the various DBS methods. A unique metric is devised, which allows for comparison of spatial variability in climate model bias and projected change in precipitation. It is found that the spatial variability in climate model bias is larger than in the climate change signals. The magnitude of spatial bias seen in precipitation inputs does not necessarily correspond to the magnitude of biases seen in hydrological outputs. Variables that integrate basin responses over time and space are more sensitive to mean spatial biases and less so on extremes. Hydrological simulations forced by the least parameterized DBS approach show the highest error in mean and maximum groundwater heads; however, the most highly parameterised DBS approach shows less robustness in future periods compared with the reference period it was trained in. For hydrological impacts studies, choice of bias correction method should depend on the spatial scale at which hydrological impacts variables are required and whether CM initial bias is spatially uniform or spatially varying. Copyright © 2015 John Wiley & Sons, Ltd.
The relation between circulation types and regional Alpine climate. Part I: synoptic climatology of Trentino
Authors: Panziera L. , Giovannini L. , Laiti L. , Zardi D. 
Published: March 2015

ABSTRACTA comprehensive data set of surface temperature, rainfall, solar radiation and wind measurements was composed to investigate the relation between synoptic circulation types and the climate of Trentino, a mountainous region in the South‐Eastern Alps. Synoptic patterns are classified over different levels by means of an existing classification method according to their degree of zonality, meridionality and vorticity. Distinct seasonal anomalies of mean daily temperature, total daily rainfall, daily solar irradiation and mean daily wind intensity are associated with most circulation types. Their magnitude varies not only among weather types, but also within the same type for different isobaric levels and seasons. The largest positive temperature anomalies are observed in correspondence with high‐pressure and westerly circulations, whereas southerly circulation in the upper levels and low‐pressure systems at lower altitudes produce the largest positive deviations of daily rainfall. Daily solar irradiation and mean daily wind intensity are larger than average with northerly circulations. Particular emphasis is given to extreme meteorological events, which occur with preferential circulation types. In fact, the frequency of occurrence of extremes of any variable for each synoptic pattern rarely coincides with the climatological value. Even though extremes in daily rainfall are observed with almost all synoptic circulations, most of them occur with the south‐westerly circulation at 500 hPa, a frequent configuration contributing more than 50% to the total rainfall. Moreover, they occur with a larger variety of weather types at the lower levels and in spring and summer with respect to the upper levels and the colder seasons. The large number of statistical indices presented in this paper reveals that the climate of Trentino is strongly influenced not only by the synoptic circulation, but also by the mesoscale mechanisms resulting from the interaction of the large‐scale flow with the local orography.