bluuebunny/crossref_metadata_2025_split huggingface dataset:
Magma flow pattern in dykes of the Azores revealed by anisotropy of magnetic susceptibility
Authors: Moreira M. A. , Geoffroy L. , Pozzi J. P. 
Published: December 2014

AbstractThe localization of magma melting areas at the lithosphere bottom in extensional volcanic domains is poorly understood. Large polygenetic volcanoes of long duration and their associated magma chambers suggest that melting at depth may be focused at specific points within the mantle. To validate the hypothesis that the magma feeding a mafic crust, comes from permanent localized crustal reservoirs, it is necessary to map the fossilized magma flow within the crustal planar intrusions. Using the AMS, we obtain magmatic flow vectors from 34 alkaline basaltic dykes from São Jorge, São Miguel and Santa Maria islands in the Azores Archipelago, a hot‐spot related triple junction. The dykes contain titanomagnetite showing a wide spectrum of solid solution ranging from Ti‐rich to Ti‐poor compositions with vestiges of maghemitization. Most of the dykes exhibit a normal magnetic fabric. The orientation of the magnetic lineation k1 axis is more variable than that of the k3 axis, which is generally well grouped. The dykes of São Jorge and São Miguel show a predominance of subhorizontal magmatic flows. In Santa Maria the deduced flow pattern is less systematic changing from subhorizontal in the southern part of the island to oblique in north. These results suggest that the ascent of magma beneath the islands of Azores is predominantly over localized melting sources and then collected within shallow magma chambers. According to this concept, dykes in the upper levels of the crust propagate laterally away from these magma chambers thus feeding the lava flows observed at the surface.
An approach estimating bidirectional air‐surface exchange for gaseous elemental mercury at AMNet sites
Authors: Wright L. Paige , Zhang Leiming 
Published: December 2014

AbstractThe bidirectional air‐surface exchange for gaseous elemental mercury (GEM) and existing measurements of the compensation points over a variety of canopy types are reviewed. Deposition and emission of GEM are dependent on several factors such as the type of canopy, temperature, season, atmospheric GEM concentrations, and meteorological conditions, with compensation points varying between 0.5 and 33 ng m−3. Emissions tend to increase from the spring to summer seasons, as the GEM accumulates in the foliage of the vegetation. A strong dependence on solar radiation has been observed, with higher emissions under light conditions. A bidirectional air‐surface exchange flux model is proposed for estimating GEM fluxes at a two‐hourly time resolution for the National Atmospheric Deposition Program's, Atmospheric Mercury Network (AMNet) sites. Compared to the unidirectional dry deposition model used in Zhang et al. (2012), two additional parameters, stomatal and soil emission potential, were needed in the bidirectional model and were chosen based on knowledge gained in the literature review and model sensitivity test results. Application of this bidirectional model to AMNet sites have produced annual net deposition fluxes comparable to those estimated in Zhang et al. (2012) at the majority of the sites. In this study, the net GEM dry deposition has been estimated separately for each dominant land use type surrounding each site, and this approach is also recommended for future calculations for easy application of the results to assessments of the mercury effects on various ecosystems.
Catalytic Synergism in a C60IL10TEMPO2Hybrid in the Efficient Oxidation of Alcohols
Authors: Beejapur Hazi Ahmad , Campisciano Vincenzo , Giacalone Francesco , Gruttadauria Michelangelo 
Published: December 2014

AbstractA novel fullerene [5:1]hexakisadduct bearing two 2,2,6,6‐tetramethylpiperidine 1‐oxyl (TEMPO) radicals and ten 1‐propyl‐3‐methylimidazolium bromide moieties has been synthesized and characterized. Such an C60IL10TEMPO2hybrid has been successfully employed as a catalyst in the selective oxidation of a wide series of alcohols and is highly active at just 0.1 mol% loading. Moreover, it can be easily recovered by adsorption onto a multi‐layered covalently‐linked SILP phase (mlc‐SILP) through a “release and catch” approach and reused for up to 12 cycles without loss in efficiency. Interestingly, a catalytic synergistic effect of TEMPO and imidazolium bromide moieties combined in the same hybrid has been clearly shown.magnified image
Association between incident cancer and subsequent stroke
Authors: Navi Babak B. , Reiner Anne S. , Kamel Hooman , Iadecola Costantino , Elkind Mitchell S. V. , Panageas Katherine S. , DeAngelis Lisa M. 
Published: December 2014

ObjectiveA study was undertaken to examine the association between incident cancer and the subsequent risk of stroke.MethodsUsing the Surveillance, Epidemiology, and End Results–Medicare linked database, we identified patients with a new primary diagnosis of breast, colorectal, lung, pancreatic, or prostate cancer from 2001 through 2007. These patients were individually matched by age, sex, race, registry, and medical comorbidities to a group of Medicare enrollees without cancer, and each pair was followed through 2009. Validated diagnosis codes were used to identify a primary outcome of stroke. Cumulative incidence rates were calculated using competing risk survival statistics.ResultsAmong 327,389 pairs of cancer patients and matched controls, the 3‐month cumulative incidence of stroke was generally higher in patients with cancer. Cumulative incidence rates were 5.1% (95% confidence interval [CI] = 4.9–5.2%) in patients with lung cancer compared to 1.2% (95% CI = 1.2–1.3%) in controls (p < 0.001), 3.4% (95% CI = 3.1–3.6%) in patients with pancreatic cancer compared to 1.3% (95% CI = 1.1–1.5%) in controls (p < 0.001), 3.3% (95% CI = 3.2–3.4%) in patients with colorectal cancer compared to 1.3% (95% CI = 1.2–1.4%) in controls (p < 0.001), 1.5% (95% CI = 1.4–1.6%) in patients with breast cancer compared to 1.1% (95% CI = 1.0–1.2%) in controls (p < 0.001), and 1.2% (95% CI = 1.1–1.3%) in patients with prostate cancer compared to 1.1% (95% CI = 1.0–1.2%) in controls (p = 0.085). Excess risks attenuated over time and were generally no longer present beyond 1 year.InterpretationIncident cancer is associated with an increased short‐term risk of stroke. This risk appears highest with lung, pancreatic, and colorectal cancers. Ann Neurol 2015;77:291–300
Enhancement of polyaniline properties by different polymerization temperatures in hydrazine detection
Authors: Sambasevam Kavirajaa Pandian , Mohamad Sharifah , Phang Sook‐Wai 
Published: December 2014

ABSTRACTIn this study, a simple and cost effective chemical sensor for hydrazine detection was developed using polyaniline (PAni). PAni was synthesized via chemical oxidative method at different polymerization temperatures (−10, −5, 0, and 25°C) in the presence of sodium dioctyl sulfosuccinate (AOT) as dopant. The effect of polymerization temperature on the performance of the PAni sensor for hydrazine detection was evaluated. The sensor response was analyzed using UV–Vis spectrometer, where there is notable decrease in polaron peak at ∼780 nm after the PAni was exposed to hydrazine. The reduction in the polaron peak is attributed to the decrease in the conductivity of PAni thin films owing to dedoping process by hydrazine. Fourier transform infrared analysis was carried out to study the intensity ratio of quinoid/benzenoid peak to identify the changes in chemical structure of PAni upon exposure to hydrazine. Besides that, all PAni sensors synthesized at different polymerization temperatures showed good reusability up to 10 cycles with respond and recovery time of 0.12 min and 0.08 min, respectively. Data collected in this study indicate that PAni which was synthesized at −5°C could act as sensitive sensor for hydrazine detection with a detection limit of 0.24 ppm. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2015,132, 41746.
Self‐nucleation behaviors of olefinic blocky copolymer/montmorillonite nanocomposites with collapsed and intercalated clay layers
Authors: Tong Zai‐Zai , Huang Jie , Zhou Bing , Xu Jun‐Ting , Fan Zhi‐Qiang 
Published: December 2014

ABSTRACTThe self‐nucleation behavior of olefinic blocky copolymer (OBC) / organically modified montmorillonite (OMMT) nanocomposites with a novel collapsed clay structure (c‐OMMT) was studied and compared with that of the nanocomposites with an intercalated clay structure (OBC/i‐OMMT). Their behaviors appear different in three temperature domains, Domain I (DI) in which the polymer is completely melted and only the heterogeneous nuclei are present, Domain II (DII) in which only self‐nucleation occurs and Domain III (DIII) where both self‐nucleation and annealing take place. As the OMMT loading increases, the boundary temperature of DI and DII (TI→II) shifts to lower temperature and DII becomes narrower. For the OBC/c‐OMMT nanocomposites, the TI→II or TI→III (the boundary temperature of DI and DIII) can be lower than the end melting temperature (
) and leads to appearance of a subdomain of DI, DI′, in which the self‐nuclei of un‐melted fragmental crystals exist but the following crystallization is still initiated by c‐OMMT. DII may even disappear at high c‐OMMT loadings. By contrast, the TI→II of the OBC/i‐OMMT nanocomposites is always approximate to or higher than the
. DII does not disappear and no DI′ is observed for the OBC/i‐OMMT nanocomposites. The nucleation efficiency of c‐OMMT is also evidently higher than that of i‐OMMT. These results verify that the c‐OMMT has stronger nucleation ability than i‐OMMT at the same OMMT loading. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41771.
Structural study of caveolin‐1 intramembrane domain by circular dichroism and nuclear magnetic resonance
Authors: Yang Guanhua , Dong Zhe , Xu Haoran , Wang Chunyu , Li Haichao , Li Zhengqiang , Li Fei 
Published: December 2014

ABSTRACTCaveolin‐1 is a main structural component of caveolae and essential for the invagination of caveolae by forming a hairpin‐shaped structure in the membrane‐inserting domain (residues, 102–122). In this article, we determined the tertiary structures of the peptides comprising residues 93–126 and 101–126 of caveolin‐1 in 1,1,1,3,3,3‐hexafluoro‐2‐propanol (HFIP) aqueous solution and sodium dodecyl sulfate (SDS) micelles, respectively, by nuclear magnetic resonance (NMR) study. The self‐association of the peptides in SDS and dodecylphosphocholine (DPC) micelles was also studied by circular dichroism (CD), NMR, and sodium dodecyl sulfate‐polyacrylamide gel electrophoresis (SDS‐PAGE) techniques. Our results indicated that both peptides form a helix–break–helix structure with two helices spanning over Leu103–Phe107 and Ile117–His126 and a loop ranging over Gly108–Gly116. The longer peptide 93–126 showed a stronger propensity to aggregate than the shorter peptide 101–126 in the micelles. Our results suggested that the glycine residues at positions 108 and 116 are important for the break of the helical structure of the membrane‐inserting domain and the segment Thr93–Arg101 flanking the membrane‐inserting domain may play a role in the self‐association of the caveolin‐1 protein at cellular membrane. © 2014 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 104: 11–20, 2015.
Thioether Analogues of Disulfide‐Bridged Cyclic Peptides Targeting Death Receptor 5: Conformational Analysis, Dimerisation and Consequences for Receptor Activation
Authors: Pulka‐Ziach Karolina , Pavet Valeria , Chekkat Neila , Estieu‐Gionnet Karine , Rohac Roman , Lechner Marie‐Charlotte , Smulski Cristian R. , Zeder‐Lutz Gabrielle , Altschuh Danièle , Gronemeyer Hinrich , Fournel Sylvie , Odaert Benoit , Guichard Gilles 
Published: December 2014

AbstractCyclic peptides containing redox‐stable thioether bridges might provide a useful alternative to disulfide‐bridged bioactive peptides. We report the effect of replacing the disulfide bridge with a lanthionine linkage in a 16‐mer cyclic peptide that binds to death receptor 5 (DR5, TRAIL‐R2). Upon covalent oligomerisation, the disulfide‐bridged peptide has previously shown similar behaviour to that of TNF‐related apoptosis inducing ligand (TRAIL), by selectively triggering the DR5 cell death pathway. The structural and biological properties of the DR5‐binding peptide and its desulfurised analogue were compared. Surface plasmon resonance (SPR) data suggest that these peptides bind DR5 with comparable affinities. The same holds true for dimeric versions of these peptides: the thioether is able to induce DR5‐mediated apoptosis of BJAB lymphoma and tumorigenic BJELR cells, albeit to a slightly lower extent compared to its disulfide homologue. NMR analysis revealed subtle variation in the conformations of the two peptides and suggests that the thioether peptide is slightly less folded than its disulfide homologue. These observations could account for the different capability of the two dimers to cluster DR5 receptors on the cell surface and to trigger apoptosis. Nevertheless, our results suggest that the thioether peptide is a potential candidate for evaluation in animal models.
Primary rectal diffuse large B‐cell lymphoma associated with ulcerative colitis: a case report
Authors: Hiyama Kazuhiro , Terashima Hideo , Nakano Yoritaka , Kamiga Masahiro , Harada Kyoichi , Horiguchi Hisashi , Mamiya Takashi 
Published: December 2014

Key Clinical MessageWe need to be aware of primary intestinal lymphoproliferative disease (PILD) associated with ulcerative colitis (UC). We should carefully monitor UC patients, particularly patients who meet the following conditions; a previous Epstein‐Barr virus infection, treatment duration ≧4 years, male, and age ≧50 years.
Highly Selective Detection of 2,4,6‐Trinitrophenol and Cu2+ Ions Based on a Fluorescent Cadmium–Pamoate Metal–Organic Framework
Authors: Ye Junwei , Zhao Limei , Bogale Raji Feyisa , Gao Yuan , Wang Xiaoxiao , Qian Xiaomin , Guo Song , Zhao Jianzhang , Ning Guiling 
Published: December 2014

AbstractA luminescent cadmium–pamoate metal–organic framework, [Cd2(PAM)2(dpe)2(H2O)2]⋅0.5(dpe) (1), has been synthesized under hydrothermal conditions by using π‐electron‐rich ligands 4,4′‐methylenebis(3‐hydroxy‐2‐naphthalenecarboxylic acid) (H2PAM) and 1,2‐di(4‐pyridyl)ethylene (dpe). Its structure is composed of both mononuclear and dinuclear CdII building units, which are linked by the PAM and dpe ligands, resulting in a (4,8)‐connected 3D framework. The π‐conjugated dpe guests are located in a 1D channel of 1. The strong emission of 1 could be quenched efficiently by trace amounts of 2,4,6‐trinitrophenol (TNP), even in the presence of other competing analogues such as 4‐nitrophenol, 2,6‐dinitrotoluene, 2,4‐dinitrotoluene, nitrobenzene, 1,3‐dinitrobenzene, hydroquinone, dimethylbenzene, and bromobenzene. The high sensitivity and selectivity of the fluorescence response of 1 to TNP shows that this framework could be used as an excellent sensor for identifying and quantifying TNP. In the same manner, 1 also exhibits superior selectivity and sensitivity towards Cu2+ compared with other metal ions such as Zn2+, Mn2+, Mg2+, K+, Na+, Ni2+, Co2+, and Ca2+. This is the first MOF that can serve as a dual functional fluorescent sensor for selectively detecting trace amounts of TNP and Cu2+.
Anisotropic Radon Transform and Its Application to Demultiple
Authors: Xiang‐Bo GONG , Li‐Guo HAN , Hong‐Jian LI 
Published: December 2014

AbstractFor the seismic data acquired in the anisotropic medium and with large offset, although we use the high‐resolution hyperbolic Radon transform, the energy of the Radon domain is still not convergent. In order to overcome this problem, the influence of the anisotropic factor is considered in the integral path of Radon transform. By introducing the anisotropic anellipticity parameters η from non‐hyperbolic moveout formula, the travel‐time curve can be accurately described in the horizontal layer for large offset. We derive the integral equation of forward and inverse Radon transform with three parameters, which are the offset, the slowness and the anellipticity. For time‐varying of anisotropic Radon transform, the fast algorithm in the frequency domain is not applicable in the process of discretization. This paper adopt the optimal semblance weighted Gauss‐Seidel iterative algorithm which not only keeps the high resolution but also has the high calculation efficiency. In the examples of the anisotropic model and real marine seismic data with large offset, this method shows the effective and efficient application to demultiple.
The Elastic Wave Velocities of the Granitoids from Eastern Junggar of Xinjiang at High Temperature and High Pressure and Their Geological Constraints on the Crustal Structure
Authors: Chun‐Juan ZANG , Ming‐Liang WANG , Yong‐Gang LIU , Hong‐Feng TANG 
Published: December 2014

AbstractThe compressional (VP) and shear wave velocities (VS) of typical granitoids (alkali‐feldspar granite, alkaline granite, granodiorite, monzogranite and quartz diorite) from Kalamaili granite belt and Yemaquan body in Eastern Junggar, Xinjiang were experimentally measured at pressures up to 1.0 GPa (room temperature) and temperatures up to 700°C (1.0 GPa) by ultrasonic reflection‐transmission method. The results show that both VP and VS of the granitoids present a linear velocity increase with the pressure at room temperature from 0.4∼1.0 GPa, which is interpreted in terms of closure of the microcracks in rocks under this pressure range. The VP and VS of the granitoids are 5.79∼6.84 km·s−1 and 3.26∼3.85 km·s−1 respectively at room temperature and 1.0 GPa. On the basis of the linear relationship between pressure with VP and VS, we derived the pressure derivatives of VP and VS as 0.1568∼0.4078 km/(s·GPa) and 0.0722∼0.3271 km/(s·GPa) respectively, and the reference velocities VP0 and VS0 are 5.62∼6.47 km·s−1 and 3.15∼3.75 km·s−1 respectively. At 1.0 GPa, VP and VS of the granitoids show a linear decrease with temperature from room temperature to 700°C, and temperature derivatives of velocities are (−3.41∼−4.96) × 10−4 km/(s · °C) and (−0.88∼−3.22) × 10−4 km/(s · °C), respectively. Taking advantage of derivatives of velocities and reference velocities of the granitoids obtained from our experiments, and combining regional geothermal resources of East Junggar area, VP and VS‐depth profiles were calculated. From the comparison of velocity‐depth profiles with geophysical exploring results, we infer that the VP and VS of the alkali‐feldspar granite, alkaline granite, monzogranite and part of granodiorite in Eastern Junggar of Xinjiang are coherent well with the velocity of the upper crust, and the average Poisson's ratio of several rocks are also consistent with the Poisson's ratio of the upper crust. Therefore, we suggest that these kinds of rocks are important parts of the upper crust in this region. In addition, the VP and VS of the quartz diorite are both in accord with the middle crust, suggesting that it may be one kind of rocks in the middle crust of this region.
Characteristics of Lagrangian Transportation in a Tropical Deep Convective Process During TWP‐ICE
Authors: Tao QING , Xin‐Yong SHEN , Wei‐Guo WANG , Wen‐Yan HUANG 
Published: December 2014

AbstractHigh resolution mesoscale model WRFV3.4.1 is used to simulate the deep convective process during TWP‐ICE. Simulation data from the forth nested domain outputted every five minutes is employed to analyze the characteristics of an updraft mass flux profile and the trajectories of convective transportation with the FLEXPART Lagrangian dispersion model. Analyses of Lagrangian characteristics of hydrometeor transportation and mass flux vertical variation show that around the top of conditional instability, some hydrometeor has been detrained from the deep convective system. Convective hydrometeor is conveyed by steering current from the deep convective system to their downstream. However, influenced by low level wind disturbance, some hydrometeor is also conveyed to upstream. The largest distance over which the hydrometeor is transported from the deep convective system to the downstream is about 200∼300 km. About 10%∼20% of the hydrometeor has an important influence on the anvil area 50∼150 km downward from the deep convective system, of which the time scale is 4∼6 hours.
A Convenient Preparation of Fluorinating Reagent F‐TEDA Bearing Bisphenylsulfonylimide Counterion and Its Fluorination to Oxindoles
Authors: Zhu Wenhua , Hu Xiaohui , Wang Fajie , Yang Xianjin , Wu Xinyan 
Published: December 2014

AbstractThe direct preparation of a kind of fluorinating reagent 1 [F‐TEDA‐N(SO2Ph)2] was realized in high yield via the complexation of N‐fluorobenzenesulfonimide (NFSI) with 1‐(chloromethyl)‐1,4‐diazabicyclo[2.2.2]octan‐1‐ium N′,N′‐bis‐(benzenesulfonylimide) salt. In its fluorination to oxindoles, the fluorinating products 6 were afforded in moderate to high yields.
Diagnostics of Tin Plasma Produced by Visible and IR Nanosecond Laser Ablation
Authors: Hanif M. , Salik M. 
Published: December 2014

AbstractWe present the optical emission spectroscopic studies of the Tin (Sn) plasma, produced by the fundamental (1064 nm) and second (532 nm) harmonics of a Q switched Nd: YAG pulsed laser having pulse duration of 5 ns and 10 Hz repetition rate which is capable of delivering 400 mJ at 1064 nm, and 200 mJ at 532 nm using Laser Induced Breakdown Spectroscopy (LIBS). The laser beam was focused on target material by placing it in air at atmospheric pressure. The experimentally observed line profiles of four neutral tin (Sn I) lines at 231.72, 248.34, 257.15 and 266.12 nm were used to extract the electron temperature (Te) using the Boltzmann plot method and determined its value 6360 and 5970 K respectively for fundamental and second harmonics of the laser. Whereas, the electron number density (Ne) has been determined from the Stark broadening profile of neutral tin (Sn I) line at 286.33 nm and determined its value 5.85 x 1016 and 6.80 x 1016cm–3 for fundamental and second harmonics of the laser respectively. Both plasma parameters (Te and Ne) have also been calculated by varying distance from the target surface along the line of propagation of plasma plume and also by varying the laser irradiance. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Lenard‐Balescu Calculations and Classical Molecular Dynamics Simulations of Electrical and Thermal Conductivities of Hydrogen Plasmas
Authors: Whitley H. D. , Scullard Ch. R. , Benedict L. X. , Castor J. I. , Randles A. , Glosli J. N. , Richards D. F. , Desjarlais M. P. , Graziani F. R. 
Published: December 2014

AbstractWe present a discussion of kinetic theory treatments of linear electrical and thermal transport in hydrogen plasmas, for a regime of interest to inertial confinement fusion applications. In order to assess the accuracy of one of the more involved of these approaches, classical Lenard‐Balescu theory, we perform classical molecular dynamics simulations of hydrogen plasmas using 2‐body quantum statistical potentials and compute both electrical and thermal conductivity from our particle trajectories using the Kubo approach. Our classical Lenard‐Balescu results employing the identical statistical potentials agree well with the simulations. Comparison between quantum Lenard‐Balescu and classical Lenard‐Balescu for conductivities then allows us to both validate and critique the use of various statistical potentials for the prediction of plasma transport properties. These findings complement our earlier MD/kinetic theory work on temperature equilibration [1], and reach similar conclusions as to which forms of statistical potentials best reproduce true quantum behavior. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)