bluuebunny/crossref_metadata_2025 huggingface dataset:
The synthesis of novel Mn-doped CdTe fluorescence probes and their application in the determination of luteolin
Authors: Li Li , Yu Lurong , Ding Yaping , Zhang Qiaolin , Lu Yaxiang
Published: March 2015

Mn-doped CdTe QDs were prepared. Luteolin can reduce their fluorescence intensity, based on which detection of luteolin can be realized.
Perovskite solar cells prepared by flash evaporation
Authors: Longo Giulia , Gil-Escrig Lidón , Degen Maarten J. , Sessolo Michele , Bolink Henk J.
Published: March 2015

A simple vacuum deposition method for the preparation of high quality hybrid organic–inorganic methylammonium lead iodide perovskite thin films is reported.
First evidence of light-induced spin transition in molybdenum(iv)
Authors: Bridonneau N. , Long J. , Cantin J.-L. , von Bardeleben J. , Pillet S. , Bendeif E.-E. , Aravena D. , Ruiz E. , Marvaud V.
Published: March 2015

Photo-induced spin transition in a molybdenum–zinc complex has been evidenced: a unique Light-Induced Excited Spin State Trapping Effect (LIESST) on a 4d transition metal ion.
On the importance of ferromagnetic exchange between transition metals in field-free SMMs: examples of ring-shaped hetero-trimetallic [(LnNi2){W(CN)8}]2 compounds
Authors: Dhers Sébastien , Costes Jean-Pierre , Guionneau Philippe , Paulsen Carley , Vendier Laure , Sutter Jean-Pascal
Published: March 2015

Genuine SMMs with enlarged energy barriers for magnetization reversal are shown to result from ferromagnetic interactions between transition metals in exchange-coupled d–4f compounds.
(E)-Specific direct Julia-olefination of aryl alcohols without extra reducing agents promoted by bases
Authors: Yao Chuan-Zhi , Li Qiang-Qiang , Wang Mei-Mei , Ning Xiao-Shan , Kang Yan-Biao
Published: March 2015

(E)-Specific direct Julia-olefination of aryl alcohols promoted by bases: a strategy of self-hydride transferring redox process.
From monomers to polymers: steric and supramolecular effects on dimensionality of coordination architectures of heteroleptic mercury(ii) halogenide–tetradentate Schiff base complexes
Authors: Mahmoudi Ghodrat , Stilinović Vladimir , Gargari Masoumeh Servati , Bauzá Antonio , Zaragoza Guillermo , Kaminsky Werner , Lynch Vincent , Choquesillo-Lazarte Duane , Sivakumar K. , Khandar Ali Akbar , Frontera Antonio
Published: March 2015

We report the synthesis and X-ray characterisation of six mercury(ii) halogenide–tetradentate Schiff base complexes.
Molybdenum disulfide as a highly efficient adsorbent for non-polar gases
Authors: Yu Ningning , Wang Lu , Li Min , Sun Xiaotian , Hou Tingjun , Li Youyong
Published: March 2015

Molybdenum disulfide with vacancies is predicted to be an efficient absorbent for CO2 and CH4 molecules, and the gravimetric adsorption can be as high as 42 wt%.
Vibrational models for a crystal with 36 water molecules in the unit cell: IR spectra from experiment and calculation
Authors: Mitev Pavlin D. , Eriksson Anders , Boily Jean-François , Hermansson Kersti
Published: March 2015

One dimensional uncoupled anharmonic approach for modeling water OH stretchings in crystalline hydrates.
New trans-stilbene derivatives with large two-photon absorption cross-section and non-linear optical susceptibility values – a theoretical investigation
Authors: Kundi Varun , Thankachan Pompozhi Protasis
Published: March 2015

In the present study, newly designed TSB derivatives decorated with suitable donor–acceptor groups have large TPA cross-sections and can be used as potential two-photon active materials.
The influences of Al species and Ti species on the catalytic epoxidation over Si/Ti-pillared MCM-36 synthesized from MCM-22
Authors: Jin Fang , Huang Shingjong , Cheng Soofin , Wu Yuanxin , Chang Chih-Cheng , Huang Yu-Wei
Published: March 2015

The influences of acidity from Al species and the coordination state of Ti species on the catalytic epoxidation performance are investigated over novel mesopore silica-aluminium materials with Si/Ti mixed oxide as pillar, i.e., Si/Ti-MCM-36 derivatives.
Polypyridyl Ru(ii)-derivatized polypropylacrylate polymer with a terminal water oxidation catalyst. Application of reversible addition–fragmentation chain transfer polymerization
Authors: Fang Zhen , Ito Akitaka , Luo Hanlin , Ashford Dennis L. , Concepcion Javier J. , Alibabaei Leila , Meyer Thomas J.
Published: March 2015

A ruthenium containing poly(propylmethacrylate) derivative was synthesized by RAFT polymerization and end-capped with a catalyst derivative.
Efficient enhancement of magnetic anisotropy by optimizing the ligand-field in a typically tetranuclear dysprosium cluster
Authors: Liu Jiang , Chen Yan-Cong , Jiang Zhong-Xia , Liu Jun-Liang , Jia Jian-Hua , Wang Long-Fei , Li Quan-Wen , Tong Ming-Liang
Published: March 2015

Two tetranuclear dysprosium single molecule magnets under a zero applied external magnetic field showing high thermal energy barriers which are among the highest within the reported tetranuclear lanthanide-based SMMs.
A new vanadium sulfate with ferrimagnetic and NLO properties constructed from novel discrete umbrella-like [VV(μ3-O)4VIV4O5(SO4)4(en)]5− anions
Authors: Zhou Shuai , Wan Hongxiang , Hu Gonghao , Zhang Yu , Liu Ying , Miao Hao , Zhu Dunru , Xu Yan
Published: March 2015

A new umbrella-like vanadium sulfate shows significant zero field splitting and strong two photon absorption.
Point-of-care diagnostics for ricin exposure
Authors: Diakite Mohamed Lemine Youba , Rollin Jérôme , Jary Dorothée , Berthier Jean , Mourton-Gilles Chantal , Sauvaire Didier , Philippe Cathy , Delapierre Guillaume , Gidrol Xavier
Published: March 2015

We established a gene expression profile resulting from ricin exposure and demonstrated its ability to classify exposedvs.non-exposed mice with a drop of blood using an integrated microfluidic cartridge.
Production of indole antibiotics induced by exogenous gene derived from sponge metagenomes
Authors: Takeshige Yuya , Egami Yoko , Wakimoto Toshiyuki , Abe Ikuro
Published: March 2015

Sponge metagenomes are accessible genetic sources containing genes and gene clusters responsible for the biosynthesis of sponge-derived bioactive natural products.
Tantalising technology
Authors: Lowe Derek
Published: March 2015

Computer-assisted drug design always looks like it's just about to work, says Derek Lowe, but the reality is complicated.
Structure and ionization of sulfuric acid in water
Authors: Fraenkel Dan
Published: March 2015

High-sensitivity Raman spectra of aqueous H2SO4 indicate that the acid in water is H4SO5 dissociating to 3H3O+ and 1HSO53−.
Ratiometric detection of hypochlorite applying the restriction to 2-way ESIPT: simple design for “naked-eye” tap water analysis
Authors: Manna Abhishek , Goswami Shyamaprosad
Published: March 2015

Chemosensor is sensitive enough to prove that boiling tap water for ten minutes is a good practice before drinking it.
Synthesis of micro sphere-like bismuth nanoparticles by microwave assisted polyol method; designing a novel electrochemical nanosensor for ultra-trace measurement of Pb2+ ions
Authors: Safardoust-Hojaghan Hossein , Salavati-Niasari Masoud , Motaghedifard Mohammad Hassan , Hosseinpour-Mashkani Sayed Mostafa
Published: March 2015

Bi nanostructures were synthesized in the presence of propylene glycol as the solvent and surfactant through microwave method.
Sandwich-structured nanohybrid paper based on controllable growth of nanostructured MnO2on ionic liquid functionalized graphene paper as a flexible supercapacitor electrode
Authors: Sun Yimin , Fang Zheng , Wang Chenxu , Ariyawansha K. R. Rakhitha Malinga , Zhou Aijun , Duan Hongwei
Published: March 2015

A sandwich-structured flexible supercapacitor electrode has been developed by controllable template-free ultrasonic electrodepositing MnO2nanonests on freestanding ionic liquid functionalized graphene paper.
Sulfur-infiltrated graphene-backboned mesoporous carbon nanosheets with a conductive polymer coating for long-life lithium–sulfur batteries
Authors: Dong Yanfeng , Liu Shaohong , Wang Zhiyu , Liu Yang , Zhao Zongbin , Qiu Jieshan
Published: March 2015

Sulfur-infiltrated graphene-backboned mesoporous carbon nanosheets with a conductive polymer coating exhibit a long lifespan of 400 cycles with a high capacity and an excellent high-rate capability for Li–S batteries.
Structural investigation on the electrostatic loop of native and mutated SOD1 and their interaction with therapeutic compounds
Authors: Keerthana S. P. , Kolandaivel P.
Published: March 2015

The electrostatic loop of the native and mutated SOD1 protein with single point mutation in the loop is subjected to MD simulation. The structure and electrostatic properties of the native and mutated loops before/after interacting with small compounds are compared.
Rhamnolipid biosurfactant adsorption on a plasma-treated polypropylene surface to induce antimicrobial and antiadhesive properties
Authors: Hajfarajollah Hamidreza , Mehvari Saeid , Habibian Mahmoud , Mokhtarani Babak , Noghabi Kambiz Akbari
Published: March 2015

A glycolipid type of biosurfactant (rhamnolipid), which is obtained fromPseudomonas aeruginosaMA01, was adsorbed on a polypropylene film to produce an antimicrobial and antiadhesive polymeric surface for the first time.
Iron-based metal organic framework, MIL-88A, as a heterogeneous persulfate catalyst for decolorization of Rhodamine B in water
Authors: Andrew Lin Kun-Yi , Chang Hsuan-Ang , Hsu Chung-Jun
Published: March 2015

While Metal Organic Frameworks (MOFs) have been extensively investigated as photocatalysts to eliminate toxic pollutants in water, studies using MOFs as chemical oxidative catalysts to degrade contaminants are still limited.
Hydrolyzed tilapia fish collagen modulates the biological behavior of macrophages under inflammatory conditions
Authors: Liu Chao , Liu Xin , Xue Yang , Ding Tingting , Sun Jiao
Published: March 2015

This is the first study showing that HFC can inhibit the excessive production of inflammatory mediators in RAW264.7 macrophages.
Enrichment and purification of polyphenols in pine cone extracts of Pinus koraiensis Sieb. et Zucc. using a novel multi-channel parallel–serial chromatographic system packed with macroporous resin
Authors: Li Hui , Wang Zhenyu
Published: March 2015

Structure of multi-channel parallel–serial chromatographic system, and optimization of ethanol concentration, elute rate, sample volume and the concentration of polyphenols in the enrichment process of polyphenols.
Effective heterogeneous electro-Fenton process of m-cresol with iron loaded actived carbon
Authors: Bounab Loubna , Iglesias Olalla , González-Romero Elisa , Pazos Marta , Ángeles Sanromán M.
Published: March 2015

The degradation ofm-cresol (MC) has been investigated by heterogeneous electro-Fenton process using iron loaded activated carbon (Fe-AC) as heterogeneous electro-Fenton catalyst.
Preparation of a graphene-loaded carbon nanofiber composite with enhanced graphitization and conductivity for biosensing applications
Authors: Li Dawei , Li Guohui , Lv Pengfei , Ullah Naseeb , Wang Cheng , Wang Qingqing , Zhang Xiangwu , Wei Qufu
Published: March 2015

G/CNF was prepared for the first time by a facile method and it was successfully applied in laccase based biosensor.
DDQ-mediated synthesis of functionalized unsymmetrical disulfanes
Authors: Musiejuk Mateusz , Klucznik Tomasz , Rachon Janusz , Witt Dariusz
Published: March 2015

We developed a simple and efficient method for the synthesis of functionalized unsymmetrical disulfanes under mild conditions in good yields.
Fluorescent aggregates of AIEE active triphenylene derivatives for the sensitive detection of picric acid
Authors: Arora Harshveer , Bhalla Vandana , Kumar Manoj
Published: March 2015

Fluorescent aggregates of triphenylene derivatives 3 and 5 having aggregation induced emission enhancement (AIEE) characteristics have been developed which selectively detect picric acid.
Dual purpose poly(3,4-ethylenedioxypyrrole)/vanadium pentoxide nanobelt hybrids in photoelectrochromic cells and supercapacitors
Authors: Reddy B. Narsimha , Mukkabla Radha , Deepa Melepurath , Ghosal Partha
Published: March 2015

Poly(3,4-ethylenedioxypyrrole) (PEDOP)/vanadium pentoxide (V2O5) nanobelt hybrid films are useful for energy storage and modulation.
Correction: Discovery and characterization of functional modules and pathogenic genes associated with the risk of coronary artery disease
Authors: Nie Wenna , Lv Yana , Yan Leyu , Guan Tianbing , Li Qiang , Guo Xiaojuan , Liu Wenhu , Feng Mengpei , Xu Guang , Chen Xi , Lv Haitao
Published: March 2015

Correction for ‘Discovery and characterization of functional modules and pathogenic genes associated with the risk of coronary artery disease’ by Wenna Nie et al., RSC Adv., 2015, 5, 26443–26451.
Correction: Synthesis and up/down conversion luminescence properties of Na0.5R0.5MoO4:Ln3+ (R3+ = La, Gd), (Ln3+ = Eu, Tb, Dy, Yb/Er) thin phosphor films grown by pulsed laser deposition technique
Authors: Krishnan Rajagopalan , Thirumalai Jagannathan
Published: March 2015

Correction for ‘Synthesis and up/down conversion luminescence properties of Na0.5R0.5MoO4:Ln3+ (R3+ = La, Gd), (Ln3+ = Eu, Tb, Dy, Yb/Er) thin phosphor films grown by pulsed laser deposition technique’ by Rajagopalan Krishnan et al., RSC Adv., 2014, 4, 64258–64266.
Chemical assay-guided natural product isolation via solid-supported chemodosimetric fluorescent probe
Authors: Jeon Hongjun , Lim Chaemin , Lee Ji Min , Kim Sanghee
Published: March 2015

The fusion of click chemistry, fluorogenic chemodosimetry and a solid support offers advantages in identifying compounds in complex natural product mixtures.
Solvent dependent ordering of poly(3-dodecylthiophene) in thin films
Authors: Roy I. , Hazra S.
Published: March 2015

The strong influence of solvents on the ordering of poly(3-dodecylthiophene) (P3DDT) due to edge-on oriented stacking, in the spin-coated thin film on the Si substrate, both near the substrate and away from it, depending upon the substrate surface nature, is observed from the X-ray reflectivity study.
Recent theoretical progress in the development of photoanode materials for solar water splitting photoelectrochemical cells
Authors: Bhatt Mahesh Datt , Lee Jae Sung
Published: March 2015

The search for earth-abundant materials that can be used in solar water splitting cells remains an important goal for affordable and environmentally friendly methods for energy conversion and storage.
Highly oriented BaTiO3 film self-assembled using an interfacial strategy and its application as a flexible piezoelectric generator for wind energy harvesting
Authors: Gao Tao , Liao Jianjun , Wang Jianshu , Qiu Yingqiang , Yang Quan , Zhang Min , Zhao Yang , Qin Lifeng , Xue Hao , Xiong Zhaoxian , Chen Lifu , Wang Qing-ming
Published: March 2015

A highly oriented BaTiO3 film was assembled using an interfacial method, and a piezoelectric generator was fabricated to harvest wind energy.
A novel tetraphenylsilane–phenanthroimidazole hybrid host material for highly efficient blue fluorescent, green and red phosphorescent OLEDs
Authors: Liu Dong , Du Mingxu , Chen Dong , Ye Kaiqi , Zhang Zuolun , Liu Yu , Wang Yue
Published: March 2015

A novel organosilane compound Si(PPI)2 with good carrier-transport ability has been used as an efficient host for high-performance fluorescent pure-blue and phosphorescent green/red OLEDs.
Toxicological assessment of PEG functionalized f-block rare earth phosphate nanorods
Authors: Chall Sayantani , Mati Soumya Sundar , Gorain Bapi , Rakshit Soumyadipta , Bhattacharya Subhash Chandra
Published: March 2015

Toxicological assessment of synthesized and PEG functionalized lanthanum phosphate nanorods.
Synthesis and Biological Evaluation of Acetylcholinesterase Inhibitor Macakurzin C and Its Derivatives
Authors: Kim Hyoungsu , Baek Seung-Hoon , Jang Hongjun
Published: March 2015

The derivatives of macakurzin C containing a modified D ring and protected C(3)/C(5)-hydroxyl groups were synthesized and their in vitro AChE inhibitory activity and neurotoxicity were evaluated to identify the structural requirements for the activities. The results indicated that C(3)-benzyl-protected derivative has a more potent AChE inhibitory activity (IC50, 2.6 μM) and a less neurotoxicity (GI50, >100 μM) than synthetic macakurzin C (IC50, 9.1 μM; GI50, 16.6 μM).
Periodic and hyperbolic soliton solutions of a number of nonlocal nonlinear equations
Authors: Khare Avinash , Saxena Avadh
Published: March 2015

For a number of nonlocal nonlinear equations such as nonlocal, nonlinear Schrödinger equation (NLSE), nonlocal Ablowitz-Ladik (AL), nonlocal, saturable discrete NLSE (DNLSE), coupled nonlocal NLSE, coupled nonlocal AL, and coupled nonlocal, saturable DNLSE, we obtain periodic solutions in terms of Jacobi elliptic functions as well as the corresponding hyperbolic soliton solutions. Remarkably, in all the six cases, we find that unlike the corresponding local cases, all the nonlocal models simultaneously admit both the bright and the dark soliton solutions. Further, in all the six cases, not only the elliptic functions dn(x, m) and cn(x, m) with modulus m but also their linear superposition is shown to be an exact solution. Finally, we show that the coupled nonlocal NLSE not only admits solutions in terms of Lamé polynomials of order 1 but also admits solutions in terms of Lamé polynomials of order 2, even though they are not the solution of the uncoupled nonlocal problem. We also remark on the possible integrability in certain cases.
Magnetic entropy table-like shape in RNi2 composites for cryogenic refrigeration
Authors: Ibarra-Gaytán P. J. , Sánchez Llamazares J. L. , Álvarez-Alonso Pablo , Sánchez-Valdés C. F. , Gorria Pedro , Blanco J. A.
Published: March 2015

We have investigated the magnetocaloric (MC) effect in a two-phase composite based on melt-spun ribbons of the intermetallic DyNi2 and TbNi2 Laves phases. The temperature dependence of the isothermal magnetic entropy change, ΔSM(T), has been calculated for the biphasic system x(DyNi2) + y(TbNi2) with 0 < x < 1 (i.e., y = 1 − x). The optimum MC properties, i.e., a ΔSM(T) curve with table-like shape, has been found in the temperature interval of 18–44 K for the composite with x = 0.4 and for values of the magnetic field change μoΔH = 2 and 5 T, in good agreement with the experimental data. The refrigerant capacity, RC, reaches 221(526) J kg−1 with a temperature span δTFWHM of 32(41) K for μoΔH of 2(5) T, thus improving the values obtained for the individual RNi2 ribbons. Our findings constitute a good starting point to stimulate the search for new composites with enhanced MC properties at cryogenic temperatures.
Non-linear plasma wake growth of electron holes
Authors: Hutchinson I. H. , Haakonsen C. B. , Zhou C.
Published: March 2015

An object's wake in a plasma with small Debye length that drifts across the magnetic field is subject to electrostatic electron instabilities. Such situations include, for example, the moon in the solar wind and probes in magnetized laboratory plasmas. The instability drive mechanism can equivalently be considered drift down the potential-energy gradient or drift up the density-gradient. The gradients arise because the plasma wake has a region of depressed density and electrostatic potential into which ions are attracted along the field. The non-linear consequences of the instability are analysed in this paper. At physical ratios of electron to ion mass, neither linear nor quasilinear treatment can explain the observation of large-amplitude perturbations that disrupt the ion streams well before they become ion-ion unstable. We show here, however, that electron holes, once formed, continue to grow, driven by the drift mechanism, and if they remain in the wake may reach a maximum non-linearly stable size, beyond which their uncontrolled growth disrupts the ions. The hole growth calculations provide a quantitative prediction of hole profile and size evolution. Hole growth appears to explain the observations of recent particle-in-cell simulations.
Structural transitions, magnetic properties, and electronic structures of Co(Fe)-doped MnNiSi compounds
Authors: Li Y. , Wei Z. Y. , Liu E. K. , Liu G. D. , Wang S. G. , Wang W. H. , Wu G. H.
Published: March 2015

The structural transitions, magnetic properties, and electronic structures of Co(Fe)-doped MnNiSi compounds are investigated by x-ray powder diffraction, differential scanning calorimetry (DSC), magnetic measurements, and first-principles calculations. Results indicate that all samples undergo a martensitic transition from the Ni2In-type parent phase to TiNiSi-type orthorhombic phase at high temperatures. The substitution of Co(Fe) for Mn in Mn1−xCoxNiSi (x = 0.2, 0.3, and 0.4) and Mn1−yFeyNiSi (y = 0.26, 0.30, 0.36, 0.46, and 0.55) samples decreases the structural transition temperature and Curie temperature of martensite. The martensite phases show a typical ferromagnetic behavior with saturation field being basically unchanged with increasing Co(Fe) content, while the saturation magnetization shows a decreasing tendency. The theoretically calculated moments are in good agreement with the experimentally measured results. The orbital hybridizations between different 3d elements are analyzed from the distribution of density of states.
Microscopic observation of behavior of magnetic particle clusters during torque transfer between magnetic poles
Authors: Nagato Keisuke , Oshima Takuya , Kuwayama Akinori , Okada Hiroshi , Matsushima Takashi , Takagi Shu , Nakao Masayuki , Hamaguchi Tetsuya
Published: March 2015

The behavior of magnetic particles during the formation, fracture, and sliding of clusters was investigated. A setup, in which particles can be visualized and the torque between poles is measured simultaneously, was designed and built. In the case of flat poles, clusters were inclined in both the fracture and sliding mode areas. In the case of textured poles, the torque increased and varied with the cycle corresponding to the pitch of the texture. These clusters inclined by an angle less than that in the case of flat poles. The magnetic field distribution calculated by a finite element method supported this result, in which the field was concentrated at the concaves and their edges. These results will lead to the design of more efficient torque transfer devices using magnetorheological fluids.
Room temperature magnetic and dielectric properties of cobalt doped CaCu3Ti4O12 ceramics
Authors: Mu Chunhong , Song Yuanqiang , Wang Haibin , Wang Xiaoning
Published: March 2015

CaCu3Ti4−xCoxO12 (x = 0, 0.2, 0.4) ceramics were prepared by a conventional solid state reaction, and the effects of cobalt doping on the room temperature magnetic and dielectric properties were investigated. Both X-ray diffraction and energy dispersive X-ray spectroscopy confirmed the presence of Cu and Co rich phase at grain boundaries of Co-doped ceramics. Scanning electron microscopy micrographs of Co-doped samples showed a striking change from regular polyhedral particle type in pure CaCu3Ti4O12 (CCTO) to sheet-like grains with certain growth orientation. Undoped CaCu3Ti4O12 is well known for its colossal dielectric constant in a broad temperature and frequency range. The dielectric constant value was slightly changed by 5 at. % and 10 at. % Co doping, whereas the second relaxation process was clearly separated in low frequency region at room temperature. A multirelaxation mechanism was proposed to be the origin of the colossal dielectric constant. In addition, the permeability spectra measurements indicated Co-doped CCTO with good magnetic properties, showing the initial permeability (μ′) as high as 5.5 and low magnetic loss (μ″ < 0.2) below 3 MHz. And the interesting ferromagnetic superexchange coupling in Co-doped CaCu3Ti4O12 was discussed.
Renormalized anisotropic exchange for representing heat assisted magnetic recording media
Authors: Jiao Yipeng , Liu Zengyuan , Victora R. H.
Published: March 2015

Anisotropic exchange has been incorporated in a description of magnetic recording media near the Curie temperature, as would be found during heat assisted magnetic recording. The new parameters were found using a cost function that minimized the difference between atomistic properties and those of renormalized spin blocks. Interestingly, the anisotropic exchange description at 1.5 nm discretization yields very similar switching and magnetization behavior to that found at 1.2 nm (and below) discretization for the previous isotropic exchange. This suggests that the increased accuracy of anisotropic exchange may also reduce the computational cost during simulation.
Tailoring the optical constants in single-crystal silicon with embedded silver nanostructures for advanced silicon photonics applications
Authors: Akhter Perveen , Huang Mengbing , Spratt William , Kadakia Nirag , Amir Faisal
Published: March 2015

Plasmonic effects associated with metal nanostructures are expected to hold the key to tailoring light emission/propagation and harvesting solar energy in materials including single crystal silicon which remains the backbone in the microelectronics and photovoltaics industries but unfortunately, lacks many functionalities needed for construction of advanced photonic and optoelectronics devices. Currently, silicon plasmonic structures are practically possible only in the configuration with metal nanoparticles or thin film arrays on a silicon surface. This does not enable one to exploit the full potential of plasmonics for optical engineering in silicon, because the plasmonic effects are dominant over a length of ∼50 nm, and the active device region typically lies below the surface much beyond this range. Here, we report on a novel method for the formation of silver nanoparticles embedded within a silicon crystal through metal gettering from a silver thin film deposited at the surface to nanocavities within the Si created by hydrogen ion implantation. The refractive index of the Ag-nanostructured layer is found to be 3–10% lower or higher than that of silicon for wavelengths below or beyond ∼815–900 nm, respectively. Around this wavelength range, the optical extinction values increase by a factor of 10–100 as opposed to the pure silicon case. Increasing the amount of gettered silver leads to an increased extinction as well as a redshift in wavelength position for the resonance. This resonance is attributed to the surface plasmon excitation of the resultant silver nanoparticles in silicon. Additionally, we show that the profiles for optical constants in silicon can be tailored by varying the position and number of nanocavity layers. Such silicon crystals with embedded metal nanostructures would offer novel functional base structures for applications in silicon photonics, optoelectronics, photovoltaics, and plasmonics.
Instability growth seeded by oxygen in CH shells on the National Ignition Facility
Authors: Haan S. W. , Huang H. , Johnson M. A. , Stadermann M. , Baxamusa S. , Bhandarkar S. , Clark D. S. , Smalyuk V. , Robey H. F.
Published: March 2015

Fusion targets imploded on the National Ignition Facility are subject to hydrodynamic instabilities. These have generally been assumed to be seeded primarily by surface roughness, as existing work had suggested that internal inhomogeneity was small enough not to contribute significantly. New simulations presented here examine this in more detail, and consider modulations in internal oxygen content in CH plastic ablators. The oxygen is configured in a way motivated by measurement of oxygen in the shells. We find that plausible oxygen nonuniformity, motivated by target characterization experiments, seeds instability growth that is 3–5× bigger than expected from surface roughness. Pertinent existing capsule characterization is discussed, which suggests the presence of internal modulations that could be oxygen at levels large enough to be the dominant seed for hydrodynamic instability growth. Oxygen-seeded growth is smaller for implosions driven by high-foot pulse shapes, consistent with the performance improvement seen with these pulse shapes. Growth is somewhat smaller for planned future pulse shapes that were optimized to minimize growth of surface ripples. A possible modified specification for oxygen modulations is discussed, which is about 1/5 of the current requirement.
Experimental realization of negative refraction using one metasurface
Authors: Yao B. M. , Gui Y. S. , Chen X. S. , Lu W. , Hu C.-M.
Published: March 2015

A designed one metasurface metamaterial that can provide both negative permittivity and negative permeability and therefore a negative refractive index is experimentally realized in this work. Effective parameters are retrieved from the measured S parameters and are in good agreement with the numerical simulation data. Over our working frequency range, negative refractive index, index near zero, and positive index are all observed, which is confirmed by the two-dimensional wave propagation behaviour. This result can help simplify the design for negative refraction application and can further be used to fabricate negative index materials at optical wavelengths as well as three-dimensional metamaterials.
Effect of quantum dot size and size distribution on the intersublevel transitions and absorption coefficients of III-V semiconductor quantum dot
Authors: Kabi Sanjib , Perera A. G. Unil
Published: March 2015

The intersublevel absorption peak energy and absorption coefficient of non-uniform quantum dot (QD) ensembles are calculated analytically. The effect of size variations and size distribution of QDs on their energy states is analyzed. The dots are considered as a quantum box with finite potential at the barriers and the size distribution described by a Gaussian function. The influence of the aspect ratio (base to height ratio) of the QDs on the optical transitions is studied. Our model predicts the dot size (height and base) accurately to determine the absorption peaks and corresponding absorption coefficient. We also compute the absorption coefficient of the QD with different size distributions to verify the results calculated using this model with the reported experimental and other theoretical results.
Erratum: “Hamiltonian magnetohydrodynamics: Lagrangian, Eulerian, and dynamically accessible stability—Theory” [Phys. Plasmas 20, 092104 (2013)]
Authors: Andreussi T. , Morrison P. J. , Pegoraro F.
Published: March 2015

An algebraic mistake in the rendering of the Energy Casimir stability condition for a symmetric magnetohydrodynamics plasma configuration with flows made in the article Andreussi et al. “Hamiltonian magnetohydrodynamics: Lagrangian, Eulerian, and dynamically accessible stability—Theory,” Phys. Plasmas 20, 092104 (2013) is corrected.
The formation and fate of organoarsenic species in marine ecosystems: do existing experimental approaches appropriately simulate ecosystem complexity?
Authors: Duncan Elliott G. , Maher William A. , Foster Simon D.
Published: March 2015

Environmental context In marine environments, inorganic arsenic present in seawater is transformed to organoarsenic species, mainly arsenoribosides in algae and arsenobetaine in animals. These transformations decrease the toxicity of arsenic, yet the fate of arsenoribosides and arsenobetaine when marine organisms decompose is unknown. We review the current literature on the degradation of these organoarsenic species in marine systems detailing the drivers behind their degradation, and also discuss the environmental relevance of laboratory-based experiments. Abstract Despite arsenoribosides and arsenobetaine (AB) being the major arsenic species in marine macro-algae and animals they have never been detected in seawater. In all studies reviewed arsenoribosides from marine macro-algae were degraded to thio-arsenoribosides, dimethylarsinoylethanol (DMAE), dimethylarsenate (DMA), methylarsenate (MA) with arsenate (AsV) the final product of degradation. The use of different macro-algae species and different experimental microcosms did not influence the arsenoriboside degradation pathway. The use of different experimental approaches, however, did influence the rate and extent at which arsenoriboside degradation occurred. This was almost certainly a function of the complexity of the microbial community within the microcosm, with greater complexity resulting in rapid and more complete arsenoriboside degradation. AB from decomposing animal tissues is degraded to trimethylarsine oxide (TMAO) or dimethylarsenoacetate (DMAA), DMA and finally AsV. The degradation of AB unlike arsenoribosides occurs via a dual pathway with environmental or microbial community variability influencing the pathway taken. The environmental validity of different experimental approaches used to examine the fate of organoarsenic species was also reviewed. It was evident that although liquid culture incubation studies are cheap and reproducible they lack the ability to culture representative microbial communities. Microcosm studies that include sand and sediment are more environmentally representative as they are a better simulation of marine ecosystems and are also likely to facilitate complex microbial communities. An added benefit of microcosm studies is that they are able to be run in parallel with field-based research to provide a holistic assessment of the degradation of organoarsenic species in marine environments.
Source identification of atmospheric particle-bound metals at Terra Nova Bay, Antarctica
Authors: Bazzano Andrea , Soggia Francesco , Grotti Marco
Published: March 2015

Environmental context The atmosphere above Antarctica, the cleanest part of the Earth’s troposphere, serves as a valuable laboratory for studying natural atmospheric processes and for monitoring the impact of human activities on the global environment. Central to these studies is an understanding of long-range transport of pollutants to Antarctica, and distinguishing the relative contribution of natural and anthropogenic sources. We use chemical tracers and isotopic analysis to assess the origin of metals associated with atmospheric particulates in Antarctica. Abstract During the 2010–2011 austral summer, size-segregated aerosol samples were collected at a coastal Antarctic site (Terra Nova Bay, Victoria Land) and analysed for major and trace elements and lead isotopic composition, in order to provide a better understanding of the sources of metals and their transportation pathways towards Antarctica. Aerosol size fractionation was performed by a cascade impactor, able to collect aerosol particles of aerodynamic diameter 10–7.2, 7.2–3.0, 3.0–1.5, 1.5–0.95 and 0.95–0.49µm. It was found that Al, Co, Fe, Li, Mn, Rb, Y and V were mainly related to crustal inputs, whereas the marine contribution was significant for Li, Mg, Na and Rb. An additional anthropogenic source influencing the concentration of Cr, Cu, Mo and Pb was clearly demonstrated. The concentration of the elements associated to the crustal and marine inputs showed high values in the coarse mode (7.2–3.0µm), whereas the anthropogenic elements were also characterised by a high concentration in the finer (1.5–0.95µm) particles. The study of the temporal trends of the measured chemical markers along with the meteorological variables revealed that both the crustal and anthropogenic elements were related to the air masses carried by the katabatic wind from the inland, whereas the marine input appeared to be higher in January when the sea-ice extent was reduced. Finally, lead isotope ratios pointed out that the anthropogenic input was likely related to the polluted aerosols from South America and Australia, representing the predominant fraction (50–70%) of the lead measured in the samples.
Oncogenesis driven by the Ras/Raf pathway requires the SUMO E2 ligase Ubc9
Authors: Yu Bing , Swatkoski Stephen , Holly Alesia , Lee Liam C. , Giroux Valentin , Lee Chih-Shia , Hsu Dennis , Smith Jordan L. , Yuen Garmen , Yue Junqiu , Ann David K. , Simpson R. Mark , Creighton Chad J. , Figg William D. , Gucek Marjan , Luo Ji
Published: March 2015

Significance

Currently there are no targeted therapies for KRAS mutant cancer. Our study uncovers a critical role of the small ubiquitin-like modifier (SUMO) E2 ligase Ubc9 in sustaining the transformation growth of KRAS mutant colorectal cancer cells, thus establishing a functional link between the SUMO pathway and the
KRAS
oncogene. SUMO ligases are poorly explored drug targets; our work suggests that targeting the SUMO pathway, and Ubc9 in particular, could be potentially useful for the treatment of KRAS mutant colorectal cancers.
Constraints, independence, and evolution of thermal plasticity: Probing genetic architecture of long- and short-term thermal acclimation
Authors: Gerken Alison R. , Eller Olivia C. , Hahn Daniel A. , Morgan Theodore J.
Published: March 2015

Significance

Mitigating thermal stress through evolutionary adaptation or physiological plasticity is critical for species’ persistence in changing climates. Sparse knowledge of genetic and physiological architectures of thermal plasticity hampers our ability to predict organismal resilience to climate change. Understanding the independence of short- and long-term plasticity and constraints of basal thermotolerance on plasticity is important for understanding responses to climate change. We show heritable genetic variation for basal cold tolerance and plasticity in a midlatitude
Drosophila melanogaster
population. High long-term plasticity predicted high short-term plasticity, and basal cold tolerance constrained both plasticity measures. There was no overlap in SNPs associated with either plasticity type. Overlapping molecular function of SNPs suggests shared physiology between long- and short-term plasticity, despite distinct genetic architectures.
Iranian Women’s Perspectives on Violence against Women in Iran and the UK
Authors: Aghtaie Nadia
Published: March 2015

This study explores the perspectives of female Iranian students living in both Iran and the UK concerning violence against women. A qualitative approach, in the form of in-depth interviews, was carried out with 21 participants. Drawing on Stark’s concept of “liberty crime” the research found that the participants, regardless of their country of residence, perceived violence against women (VAW) as denying the opportunity for equal personhood by stripping away the victim’s sense of self. However, the scope of what was considered to be liberty crime was affected by the individual participants’ religious beliefs and their degree of acceptance of the Iranian state’s gender ideology. The research highlighted the extent to which different forms of VAW are interlinked and combine in order to control and subjugate women irrespective of their country of residence.
A Comprehensive Approach for Habitat Restoration in the Columbia Basin
Authors: Rieman Bruce E. , Smith Courtland L. , Naiman Robert J. , Ruggerone Gregory T. , Wood Chris C. , Huntly Nancy , Merrill Erik N. , Alldredge J. Richard , Bisson Peter A. , Congleton James , Fausch Kurt D. , Levings Colin , Pearcy William , Scarnecchia Dennis , Smouse Peter
Published: March 2015

The Columbia Basin once supported a diversity of native fishes and large runs of anadromous salmonids that sustained substantial fisheries and cultural values. Extensive land conversion, watershed disruptions, and subsequent fishery declines have led to one of the most ambitious restoration programs in the world. Progress has been made, but restoration is expensive (exceeding US$300M/year), and it remains unclear whether habitat actions, in particular, can be successful. A comprehensive approach is needed to guide cost-effective habitat restoration. Four elements that must be addressed simultaneously are (1) a scientific foundation from landscape ecology and the concept of resilience, (2) broad public support, (3) governance for collaboration and integration, and (4) a capacity for learning and adaptation. Realizing these in the Columbia Basin will require actions to rebalance restoration goals to include diversity, strengthen linkages between science and management, increase public engagement, work across traditional ecological and social boundaries, and learn from experience.

La cuenca Columbia alguna vez albergó una gran diversidad de peces nativos y grandes corridas de salmones anádromos que sostuvieron importantes pesquerías y valores culturales. La conversión extensiva de la tierra, la interrupción de cuencas hidrológicas y la subsecuente disminución de las pesquerías han puesto en marcha uno de los programas más ambiciosos de restauración a nivel mundial. Se ha progresado, sin embargo la restauración ecológica es costosa (más de 300 millones de dólares al año) y aún no queda claro si, en lo particular, las acciones en pro del cuidado de los hábitats han sido exitosas. Se requiere un enfoque integral que sirva de guía para llevar a cabo una restauración de hábitats eficiente en términos de costos. Para ello es indispensable abordar de manera simultánea cuatro aspectos: 1) los fundamentos científicos de la ecología paisajística y el concepto de resiliencia; 2) apoyo público amplio; 3) gobernanza para la colaboración e integración; y 4) adaptabilidad y capacidad de aprendizaje. Lograr esto en la cuenca de Columbia demanda de acciones que tiendan a un balance en los objetivos de la restauración incluyendo la diversidad, el fortalecimiento de los lazos entre la ciencia y el manejo, un mayor compromiso social, trabajo a través de las fronteras de la ecología y la sociedad y el aprendizaje derivado de la experiencia.
Strong Understanding and Immoderate Feelings: A Case for the Influence of Hugh Blair’s Concept of Taste on Jane Austen’sSense and Sensibility
Authors: McClish Glen
Published: March 2015

This article presents the case that the perspective on taste set forth in Hugh Blair’s Lectures on Rhetoric and Belles Lettres significantly influenced Jane Austen’s novel Sense and Sensibility. Austen’s version of the Scots’s concepts—sense, sensibility, understanding, feeling, delicacy, correctness, and so forth—features the tendency in individuals of taste to favor either sense or sensibility, as well as the novelist’s decided tilt toward the former. Despite her inclination toward sense, however, Austen ultimately follows Blair in characterizing these faculties as complementary and cooperative, rather than competitive or oppositional. Just as Lectures provides potential insight into Sense and Sensibility, so, correspondingly, study of Austen’s novel provides a better understanding of Blair and his influence.
“I Took Up the Hymn-Book”: Rhetoric of Hymnody in Jarena Lee’sCall to Preach
Authors: Minifee Paul A.
Published: March 2015

Through examining Jarena Lee’s employment of hymns in her spiritual autobiography, The Life and Religious Experience of Jarena Lee, a Coloured Lady, Giving an Account of Her Call to Preach the Gospel, I demonstrate how hymnody, a largely understudied literary genre in rhetorical studies, proved a critical instrument in authenticating her spiritual conversion and validating her qualifications to serve as a ministerial leader. Using Chaim Perelman’s concept of “presence” and recent research in neuroscience (on the brain and music) I show how Lee’s excerpts of the nineteenth century’s most popular hymns create an aural ambience reminiscent of a worship service that engages her Christian readers’ pathos and sense of piety in order to disengage their prejudice against her race and gender.
A Good Dissenter Speaking Well: William Enfield’s Educational and Elocutionary Philosophies in Religious Context
Authors: Poster Carol
Published: March 2015

Eighteenth-century British dissenting minister and rector of Warrington Academy William Enfield, author of the enormously successful elocutionary manual, The Speaker, although often ignored entirely or dismissed as trite and uninteresting in many histories of rhetoric, in fact wrote his elocutionary manual as part of a comprehensive educational system grounded in moral theology and faculty psychology. This article places Enfield’s elocutionary work within religious and pedagogical context through analysis of his writings on religion and education and his pamphlets debating Joseph Priestley over the nature of dissent.
Emerging new methods of peer review in scholarly journals
Authors: BJÖRK Bo‐Christer , HEDLUND Turid
Published: March 2015

The long‐established peer‐review practices in scholarly journals have remained largely unchanged by the introduction of the Internet. Nevertheless, critique of the shortcomings of current practices (bias, slowness, etc.) have led to many publishers and journals experimenting with novel ways of performing and organizing peer review, enabled by e‐publishing and new revenue models. This article proposes a taxonomy of such innovations and discusses a number of cases where, for instance, the assignment of reviewers is handled differently from current best practice. New models, which seem particularly attractive to manuscript authors, are acceptance of any scientifically valid articles as practiced in ‘megajournals‘. and increased transparency about how the peer‐review process in a particular journal works.
Book reviews
Authors: Mattingley Sue
Published: March 2015

Selling Rights, 7th edn Lynette Owen London, Routledge, 2014, 480pp. 978‐0‐415‐83564‐0 (pbk) £47.00
A Calderón problem with frequency-differential data in dispersive media
Authors: Kim Sungwhan , Tamasan Alexandru
Published: March 2015

We consider the problem of identifying a complex valued coefficient

γ
(
x
,
ω
)

\gamma (x,\omega )

in the conductivity equation

∇
⋅
γ
(
⋅
,
ω
)
∇
u
(
⋅
,
ω
)
=
0

\nabla \cdot \gamma (\cdot ,\omega )\nabla u(\cdot ,\omega )=0

from knowledge of the frequency differentials of the Dirichlet-to-Neumann map. For a frequency analytic
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="gamma left-parenthesis dot comma omega right-parenthesis equals sigma-summation Underscript k equals 0 Overscript normal infinity Endscripts left-parenthesis sigma Subscript k Baseline plus i epsilon Subscript k Baseline right-parenthesis omega Superscript k">

γ
(
⋅
,
ω
)
=

∑

k
=
0

∞

(

σ
k

+
i

ϵ
k

)

ω
k

\gamma (\cdot ,\omega )=\sum _{k=0}^\infty (\sigma _k+i\epsilon _k)\omega ^k

, in three dimensions and higher, we show that

d
j

d

ω
j

Λ

γ
(
⋅
,
ω
)

|

ω
=
0

\left .\frac {d^j}{d\omega ^j}\Lambda _{\gamma (\cdot ,\omega )}\right |_{\omega =0}

for

j
=
0
,
1
,
…
,
N

j=0,1,\dots ,N

recovers

σ
0

,
…
,

σ
N

\sigma _0,\dots , \sigma _N

and

ϵ
1

,
…
,

ϵ
N

\epsilon _1,\dots ,\epsilon _N

. This problem arises in frequency differential electrical impedance tomography of dispersive media.
Auslander-Reiten quiver of type A and generalized quantum affine Schur-Weyl duality
Authors: Oh Se-jin
Published: March 2015

The quiver Hecke algebra

R
R

can be also understood as a generalization of the affine Hecke algebra of type

A
A

in the context of the quantum affine Schur-Weyl duality by the results of Kang, Kashiwara and Kim. On the other hand, it is well known that the Auslander-Reiten (AR) quivers

Γ
Q

\Gamma _Q

of finite simply-laced types have a deep relation with the positive roots systems of the corresponding types. In this paper, we present explicit combinatorial descriptions for the AR-quivers

Γ
Q

\Gamma _Q

of finite type

A
A

. Using the combinatorial descriptions, we can investigate relations between finite dimensional module categories over the quantum affine algebra

U
q
′

(

A
n

(
i
)

)

U’_q(A_n^{(i)})

(
i
=
1
,
2
)

(i=1,2)

and finite dimensional graded module categories over the quiver Hecke algebra

R

A
n

R_{A_n}

associated to

A
n

A_n

through the generalized quantum affine Schur-Weyl duality functor.