bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dry Sintering Meets Wet Silver‐Ion “Soldering”: Charge‐Transfer Plasmon Engineering of Solution‐Assembled Gold Nanodimers From Visible to Near‐Infrared I and II Regions
Authors: Fang Lingling , Wang Yueliang , Liu Miao , Gong Ming , Xu An , Deng Zhaoxiang 
Published: October 2016

AbstractAchieving highly tunable and localized surface plasmon resonance up to near infrared (NIR) regions is a key target in nanoplasmonics. In particular, a self‐assembly process capable of producing highly uniform and solution‐processable nanomaterials with tailor‐made plasmonic properties is lacking. We herein address this problem through a conjunctive use of wet Ag+ soldering and dry thermal sintering to produce nanodimer‐derived structures with precisely engineered charge‐transfer plasmon (CTP). The sintered dimers are water soluble, featuring gradually shifted CTP spanning an 800 nm wavelength range (up to NIR II). Upon silica removal, the products are grafted by DNA to offer surface functionality. This process is also adaptable to DNA‐linked AuNP dimers toward plasmonic meta‐materials via DNA‐guided soldering and sintering.
A Heck–Matsuda Process for the Synthesis of β‐Arylethenesulfonyl Fluorides: Selectively Addressable Bis‐electrophiles for SuFEx Click Chemistry
Authors: Qin Hua‐Li , Zheng Qinheng , Bare Grant A. L. , Wu Peng , Sharpless K. Barry 
Published: October 2016

AbstractA Heck–Matsuda process for the synthesis of the otherwise difficult to access compounds, β‐arylethenesulfonyl fluorides, is described. Ethenesulfonyl fluoride (i.e., vinylsulfonyl fluoride, or ESF) undergoes β‐arylation with stable and readily prepared arenediazonium tetrafluoroborates in the presence of the catalyst palladium(II) acetate to afford the E‐isomer sulfonyl analogues of cinnamoyl fluoride in 43–97 % yield. The β‐arylethenesulfonyl fluorides are found to be selectively addressable bis‐electrophiles for sulfur(VI) fluoride exchange (SuFEx) click chemistry, in which either the alkenyl moiety or the sulfonyl fluoride group can be the exclusive site of nucleophilic attack under defined conditions, making these rather simple cores attractive for covalent drug discovery.
Preparation and characterization of a foam regulator with ultra‐high molecular weight
Authors: Zhan Mengyu , Li Siyu , Zhong Yi , Shen Chunhui , Gao Shanjun 
Published: October 2016

ABSTRACTMultistage emulsion polymerization was used to prepare ultra‐high molecular weight foam regulator of low cost, with methyl methacrylate (MMA), butyl acrylate (BA), styrene (St) as main raw materials. Ubbelohde viscometer, dynamic light scattering, infrared and raman spectra, TEM, DSC, TGA, and GPC were all used to characterize constituent and structure, morphology, and molecular weight. As a result, when the ratio of soft monomer (BA) and hard monomer (St + MMA) is 1:3, MMA:St = 4:1, potassium persulfate (KPS): 0.15%, sodium hydrogen sulfite (SHS): 0.05%, azodiisobutyronitrile (AIBN): 0.15%, divinyl benzene (DVB): 0.3%, the final product terpolymer has obvious core‐shell structure and ultra‐high molecular weight (Mw = 1,400,000). This kind of foam regulator showed improvements in the melt strength, prevention of bubble coalescence and reduction on cost when compared with the traditional. Finally, the coefficients of poly (methyl methacrylate‐butyl acrylate‐styrene) terpolymer's Mark‐Houwink equation were calculated with tetrahydrofuran (THF) solvent at 25 °C. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44479.
Stability improvement of CO2 foam for enhanced oil‐recovery applications using polyelectrolytes and polyelectrolyte complex nanoparticles
Authors: Kalyanaraman Nishkriya , Arnold Cameron , Gupta Aadish , Tsau Jyun Syung , Ghahfarokhi Reza Barati 
Published: October 2016

ABSTRACTCO2 foam for enhanced oil‐recovery applications has been traditionally used in order to address mobility‐control problems that occur during CO2 flooding. However, the supercritical CO2 foam generated by surfactant has a few shortcomings, such as loss of surfactant to the formation due to adsorption and lack of a stable front in the presence of crude oil. These problems arise because surfactants dynamically leave and enter the foam interface. We discuss the addition of polyelectrolytes and polyelectrolyte complex nanoparticles (PECNP) to the surfactant solution to stabilize the interface using electrostatic forces to generate stronger and longer‐lasting foams. An optimized ratio and pH of the polyelectrolytes was used to generate the nanoparticles. Thereafter we studied the interaction of the polyelectrolyte–surfactant CO2 foam and the polyelectrolyte complex nanoparticle–surfactant CO2 foam with crude oil in a high‐pressure, high‐temperature static view cell. The nanoparticle–surfactant CO2 foam system was found to be more durable in the presence of crude oil. Understanding the rheology of the foam becomes crucial in determining the effect of shear on the viscosity of the foam. A high‐pressure, high‐temperature rheometer setup was used to shear the CO2 foam for the three different systems, and the viscosity was measured with time. It was found that the viscosity of the CO2 foams generated by these new systems of polyelectrolytes was slightly better than the surfactant‐generated CO2 foams. Core‐flood experiments were conducted in the absence and presence of crude oil to understand the foam mobility and the oil recovered. The core‐flood experiments in the presence of crude oil show promising results for the CO2 foams generated by nanoparticle–surfactant and polyelectrolyte–surfactant systems. This paper also reviews the extent of damage, if any, that could be caused by the injection of nanoparticles. It was observed that the PECNP–surfactant system produced 58.33% of the residual oil, while the surfactant system itself produced 47.6% of the residual oil in place. Most importantly, the PECNP system produced 9.1% of the oil left after the core was flooded with the surfactant foam system. This proves that the PECNP system was able to extract more oil from the core when the surfactant foam system was already injected. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44491.
Novel fluorescent porous hyperbranched aromatic polyamide containing 1,3,5‐triphenylbenzene moieties: Synthesis and characterization
Authors: Hu Xiaobing 
Published: October 2016

ABSTRACTIn this thesis, two novel porous hyperbranched poly(1,3,5‐tris(4‐carboxyphenyl) benzene p‐phenylenediamine) amides with different terminal functional groups are synthesized through an A2 + B3 approach using 1,3,5‐tri(4‐carboxyl phenyl) benzene (H3BTB) and p‐phenylenediamine as raw material, N‐methyl‐pyrrolidone as solvent, triphenyl phosphite and pyridine as dehydrating agent, by means of regulating the mole ratio of the monomers. The chemical structures of the prepared hyperbranched polymers are characterized by Fourier transform infrared spectroscopy and nuclear magnetic resonance (1H‐NMR and 13C‐NMR) analysis. These two polymers can be soluble in dimethyl sulfoxide (DMSO) and N,N‐dimethyl formamide (DMF). Their DMSO solutions exhibit strong blue fluorescence, especially for the amino terminated polymer HP‐NH2. While in DMF solution, the two polymers emit strong green fluorescence. These two polymers are porous polymers with the Brunauer−Emmett−Teller surface areas of 4.53 and 24.52 m2/g for HP‐COOH and HP‐NH2, respectively. They are potential useful in the areas of storage, separation, catalysis, and light emitting. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44505.
meso‐N‐Pyrrole as a Versatile Substituent Influencing the Optical Properties of Porphyrin
Authors: Hurej Karolina , Stawski Wojciech , Latos‐Grażyński Lechosław , Pawlicki Miłosz 
Published: October 2016

AbstractA meso‐N‐pyrrole porphyrin converts into a π‐extended porphyrin forming an indolizine‐3‐one motif. The indolizine‐3‐one frame opens a lactam subunit preserving a six‐membered, heterocyclic structure fused with the main macrocycle. The optical properties of formed derivatives follow the structural modifications giving the absorbance and emission eventually modulated by the NH‐centered modifications of the fused unit.
Fault‐Tolerant Finite Frequency H∞ Control for Uncertain Mechanical System with Input Delay and Constraint
Authors: Xu Shidong , Sun Guanghui , Sun Weichao 
Published: October 2016

AbstractIn this paper, a novel fault‐tolerant finite frequency H∞ controller (FFHC) is developed for uncertain mechanical system with input delay and constraint. First, the mathematical model of uncertain mechanical system is derived, where the uncertainties occur in mass, damping and stiffness matrices, respectively. Then, in view of the fact that the dominant resonance energies are caused by low‐order vibration modes of mechanical system, the finite frequency control algorithm is investigated to suppress these low‐order resonances peaks. By virtue of Lyapunov‐Krasovskii functional (LKF) and generalized Kalman‐Yakubovich‐Popov (GKYP) lemma, the desirable fault‐tolerant controller can be obtained by convex optimization. Numerical simulations verify the improvements and advantages of proposed cotroller in disturbance rejection when compared with the classic entire frequency H∞ controller (EFHC).
Impacts of initial structure of tropical cyclone on secondary eyewall formation
Authors: Ge Xuyang , Guan Liang , Zhou Shunwu 
Published: October 2016

AbstractThe secondary eyewall replacement cycle (ERC) is an important aspect for tropical cyclone (TC) intensity and structure forecasts. Both observational studies and idealized simulations are conducted to explore the sensitivity of secondary eyewall formation (SEF) to the initial structure of the tropical cyclone. It is found that a TC with a larger size (i.e. both the radial of maximum wind and outer size) is apt to SEF. Furthermore, a larger TC likely has a potential to form a larger outer eyewall and thus a wider moat region. The different SE structures may lead to different intensity fluctuations. This study motivates further research with respect to how initial structure influences the storm intensity and structure changes.
The relationship between summer sea ice extent in Hudson Bay and the Arctic Ocean via the atmospheric circulation
Authors: Ogi Masayo , Barber David G. , Rysgaard Søren 
Published: October 2016

AbstractThe trends and interannual variations of summer sea ice extents (SIEs) in both Hudson Bay and the Arctic Ocean are investigated in association with variations in atmospheric circulation and air temperature. The summer SIE variabilities of both Hudson Bay and the Arctic Ocean are well correlated and have a strong negative trend. The negative SIE trends are associated with a summer atmospheric circulation pattern that is characterized by positive anomalies over the Arctic Ocean and negative anomalies over mid‐latitudes. The trends are also connected with warm air temperatures over mid‐ and high‐latitudes. The atmospheric circulation and air temperature regressed on the summer SIEs in both Hudson Bay and the Arctic Ocean are quite similar to these trend patterns. On the other hand, the year‐to‐year variations of the detrended summer SIEs in both Hudson Bay and the Arctic Ocean are not correlated. The summer atmospheric circulation and air temperature over the Arctic Ocean have contributed to the detrended summer Arctic Ocean SIE. In contrast, the detrended summer Hudson Bay SIE is controlled by atmospheric circulation and air temperature in the previous spring.
Direct effect of dasatinib on signal transduction pathways associated with a rapid mobilization of cytotoxic lymphocytes
Authors: Iriyama Noriyoshi , Hatta Yoshihiro , Takei Masami 
Published: October 2016

AbstractIt has been shown that an increase in cytotoxic lymphocyte counts in the peripheral blood occurs rapidly after taking dasatinib, but the underlying mechanism is not yet elucidated. To investigate the influence of dasatinib on signal transduction pathways, we investigated the changes in JAK‐STAT, mitogen‐activated protein kinase (MAPK), and AKT in cytotoxic lymphocytes, including natural killer (NK) cells and cytotoxic T lymphocytes (CTLs), before and after dasatinib treatment in chronic myeloid leukemia patients. Among a total of 30 patients, 18 were treated with dasatinib, nine with imatinib, and three with nilotinib. At constitutive levels, the expression of phosphorylated proteins, pSTAT1, pSTAT3, and pERK in NK cells and pSTAT3 in CTLs, was significantly higher in dasatinib‐treated patients. Among the patients evaluated, only dasatinib‐treated patients showed inhibition of multiple signaling pathways after taking a tyrosine kinase inhibitor. The magnitude of pERK and pAKT inhibition was closely associated with an increase in NK cells and CTLs, respectively, after taking a tyrosine kinase inhibitor. Those responses were more evident in patients with cytomegalovirus IgG positivity. In this study, we demonstrated for the first time, the influence of dasatinib on cell events in cytotoxic lymphocytes in vivo and explained the possible underlying mechanism that results in lymphocyte mobilization after dasatinib treatment.
CXCL9: evidence and contradictions for its role in tumor progression
Authors: Ding Qiang , Lu Panpan , Xia Yujia , Ding Shuping , Fan Yuhui , Li Xin , Han Ping , Liu Jingmei , Tian Dean , Liu Mei 
Published: October 2016

AbstractChemokines are a group of low molecular weight peptides. Their major function is the recruitment of leukocytes to inflammation sites, but they also play a key role in tumor growth, angiogenesis, and metastasis. In the last few years, accumulated experimental evidence supports that monokine induced by interferon (IFN)‐gamma (CXCL9), a member of CXC chemokine family and known to attract CXCR3‐ (CXCR3‐A and CXCR3‐B) T lymphocytes, is involved in the pathogenesis of a variety of physiologic diseases during their initiation and their maintenance. This review for the first time presents the most comprehensive summary for the role of CXCL9 in different types of tumors, and demonstrates its contradictory role of CXCL9 in tumor progression. Altogether, this is a useful resource for researchers investigating therapeutic opportunities for cancer.
Determinants of consumer attitude toward corporate sponsors: A comparison between a profit and nonprofit sport event sponsorship
Authors: Ko Yong Jae , Chang Yonghwan , Park Chanmin , Herbst Frikkie 
Published: October 2016

AbstractThe purposes of the present study were to identify key attributes of sponsors that positively influence consumers' attitude formation and to examine the moderator role of sport event types (nonprofit vs. profit). Based on the theories of range and selective attention, we hypothesized that consumers weigh differently on particular sponsorship attributes depending on event type (i.e., profit vs. nonprofit) in constructing their attitude. The study utilized multi‐group structural equation modeling on data collected by questionnaire survey from a total of 505 spectators of college sport event (n = 303) and FIFA World Cup (n = 202). Results of structural equation modeling test indicate that prominence of sponsors is an important predictor of consumer attitude in both events, while sincerity of sponsors was found to be important in local and amateur college sport event sponsorship. From a theoretical perspective, the current study sheds light on sponsorship study, particularly the importance of examining sponsor characteristics in predicting consumer attitude and the event type as a moderating variable. A key practical implication is that sport managers should carefully examine consumers' perceptions toward sponsor characteristics in making their event sponsorship decisions. Copyright © 2016 John Wiley & Sons, Ltd.
Recombinant human endostatin inhibits TNF‐alpha‐induced receptor activator of NF‐κB ligand expression in fibroblast‐like synoviocytes in mice with adjuvant arthritis
Authors: Gao Qiu‐Fang , Zhang Xiu‐Hong , Yuan Feng‐Lai , Zhao Ming‐Dong , Li Xia 
Published: October 2016

AbstractBone loss is a critical pathology responsible for the functional disability in patients with rheumatoid arthritis (RA). It is well known that receptor activator of nuclear factor kappa‐B (NF‐κB) ligand (RANKL) plays a crucial role in bone loss in RA. The purpose of this study was to determine whether recombinant human endostatin (rh‐endostatin) mediates bone erosion in RA by regulation of RANKL expression in an experimental model of RA, consisting of mice with adjuvant‐induced arthritis (AA). Cultured AA fibroblast‐like synoviocytes (FLSs) obtained from these mice were induced by tumor necrosis factor‐α (TNF‐α) combined with or without rh‐endostatin. The levels of RANKL and osteoprotegerin (OPG) mRNA, soluble and membrane‐bound proteins were assessed by real‐time PCR, ELISA, and Western blotting. Western blotting and the luciferase reporter assay were used to study related signaling pathways. Rh‐endostatin inhibited RANKL mRNA expression, soluble and membrane‐bound protein expression in AA FLSs but not in CD4+ T cells. However, OPG expression and secretion was not affected by rh‐endostatin in AA FLSs. Molecular analysis demonstrated that rh‐endostatin significantly inhibited TNF‐α‐induced MAPK and AP‐1 signaling pathways. Moreover, rh‐endostatin attenuated TNF‐α‐induced NF‐κB signaling by suppressing the phosphorylation level of inhibitor kappaBα (IκBα) and nuclear translocation of NF‐κB p65 in FLSs from mice with AA. These results provide the first evidence that rh‐endostatin inhibits TNF‐α‐induced RANKL expression in AA FLSs.
Tamoxifen inhibits mitochondrial oxidative stress damage induced by copper orthophenanthroline
Authors: Buelna‐Chontal Mabel , Hernández‐Esquivel Luz , Correa Francisco , Díaz‐Ruiz Jorge Luis , Chávez Edmundo 
Published: October 2016

AbstractIn this work, we studied the effect of tamoxifen and cyclosporin A on mitochondrial permeability transition caused by addition of the thiol‐oxidizing pair Cu2+‐orthophenanthroline. The findings indicate that tamoxifen and cyclosporin A circumvent the oxidative membrane damage manifested by matrix Ca2+ release, mitochondrial swelling, and transmembrane electrical gradient collapse. Furthermore, it was found that tamoxifen and cyclosporin A prevent the generation of TBARs promoted by Cu2+‐orthophenanthroline, as well as the inactivation of the mitochondrial enzyme aconitase and disruption of mDNA. Electrophoretic analysis was unable to demonstrate a cross‐linking reaction between membrane proteins. Yet, it was found that Cu2+‐orthophenanthroline induced the generation of reactive oxygen species. It is thus plausible that membrane leakiness is due to an oxidative stress injury.
Mature CD8+ T‐cell clonal expansion in the oral cavity and digestive tract: a severe lymphoid malignancy that mimics Crohn's disease
Authors: Coppo Paul , Fabiani Bettina , Marzac Christophe , Sokol Harry 
Published: October 2016

Key Clinical MessageIn patients with atypical Crohn's disease features, including severe oral ulcerations and resistance to standard treatment, the possibility of a mature clonal CD8+ T‐cell lymphoproliferative disorder should be investigated. Clinicians should be aware of this differential diagnosis because CD8+ T‐cell lymphoma prognosis can be remarkably favorable upon oral treatment with cyclophosphamide.
Kinetic Modeling and Reactor Simulation for Ethanol Steam Reforming
Authors: Tripodi Antonio , Compagnoni Matteo , Rossetti Ilenia 
Published: October 2016

AbstractAn extended kinetic model has been proposed for the ethanol steam reforming reaction that includes kinetic steps for the formation of important byproducts such as ethylene, acetaldehyde, and coke. The model has been applied to the regression of new kinetic data obtained with the use of a 9 wt % K2O/10 wt % Ni/ZrO2 catalyst prepared by flame pyrolysis. The kinetic tests were performed by varying the temperature, space velocity, and the water/ethanol ratio according to a central composite experimental design. The model was validated against literature data collected over a different catalytic system and without the presence of the selected byproducts to check its versatility and robustness. The model gave very straightforward predictions of catalyst performance for the literature data: in this case the lump sum of all the square residues (calculated vs. tabulated mol fractions) is 2.88×10−2 over a dataset of 408 points. For our own kinetic data, the model interpreted the conversion of ethanol and the evolution of the main byproducts, which include ethylene and acetaldehyde, correctly. The evolution of coke was interpreted less satisfactorily because of a missing step for coke gasification. Rate‐limiting steps have been identified together with very rapid reaction steps, which can be considered to be substantially equilibrated.
Novel Functional Hollow and Multihollow Organic Microspheres: Enhanced Efficiency in a Complex, Heterogeneous, Asymmetric, Three‐Component/Triple Organocascade Reaction
Authors: Dai Fuqiang , Zhao Zhiwei , Xie Guangxin , Feng Dandan , Ma Xuebing 
Published: October 2016

AbstractThe pioneered construction of monodisperse hollow and multihollow Jørgensen–Hayashi‐functionalized microspheres with a well‐defined spherical morphology, high surface area, and large pore volume were developed by initial dispersion copolymerization of the Jørgensen–Hayashi organocatalyst with acrylamide and styrene monomers cross‐linked by p‐divinylbenzene and ethylene glycol dimethacrylate, respectively, on the surface of poly(styrene/acrylic acid) (PS) microspheres to form core–shell structures, followed by removal of the PS core by etching in organic solvents. The as‐prepared hollow and multihollow microspheres were able to achieve better mass transfer in a complex heterogeneous asymmetric three‐component/triple cascade reaction and provided the products in good yields (31–61 %) with excellent stereoselectivities (80:20–93:7 dr, >99 % ee).
Ordered Nanoporous Thin Films by Nanosphere Lithography and Diazonium Electroreduction: Simple Elaboration of Ultra‐Micro‐Electrode Arrays
Authors: Nguyen Van‐Quynh , Schaming Delphine , Tran Dai Lam , Lacroix Jean‐Christophe 
Published: October 2016

AbstractHighly ordered ultra‐micro‐electrode arrays are obtained using nanosphere lithography combined with electrochemical reduction of an aryl diazonium salt. A template made up of 2D hexagonally close‐packed polystyrene (PS) spheres was first deposited on indium tin oxide or glassy carbon substrates. Then, a thin layer of bisthienylbenzene (BTB) was grafted onto the interstices between the spheres. After dissolution of the PS spheres, the presence of micro‐hole arrays on the substrates was evidenced by atomic force microscopy. The electrochemical response of these micro‐hole arrays was investigated as a function of the size of the spheres used. Depending on their radius and the distance between adjacent holes, they behave as a partially blocked surface or as ultra‐microelectrode arrays (UMEAs).
Boosting High‐Rate Lithium Storage of V2O5 Nanowires by Self‐Assembly on N‐Doped Graphene Nanosheets
Authors: Gao Xiao‐Tian , Zhu Xiao‐Dong , Le Shi‐Ru , Yan Du‐Juan , Qu Cai‐Yu , Feng Yu‐Jie , Sun Ke‐Ning , Liu Yi‐Tao 
Published: October 2016

AbstractThe front cover artwork is provided by Xiao‐Tian Gao, Xiao‐Dong Zhu, and co‐workers, Harbin Institute of Technology (Harbin, P. R. China). The image shows that the nanohybrids synthesized by assembling V2O5 nanowires on N‐doped graphene nanosheets hold great promise as a cathode material for lithium‐ion batteries. Read the full text of the Communication at 10.1002/celc.201600305.