bluuebunny/crossref_metadata_2025_split huggingface dataset:
ES‐Plag: Efficient and sensitive source code plagiarism detection tool for academic environment
Authors: Sulistiani Lisan , Karnalim Oscar 
Published: September 2018

AbstractSource code plagiarism detection using Running‐Karp‐Rabin Greedy‐String‐Tiling (RKRGST) is a common practice in academic environment. However, such approach is time‐inefficient (due to RKRGST's cubic time complexity) and insensitive (toward token subsequence rearrangement). This paper proposes ES‐Plag, a plagiarism detection tool featured with cosine‐based filtering and penalty mechanism to handle aforementioned issues. Cosine‐based filtering mitigates time‐inefficiency by excluding non‐potential pairs from RKRGST comparison; while penalty mechanism mitigates insensitivity by reducing the number of matched tokens with the number of matched subsequences prior similarity normalization. In addition to issue‐solving features, ES‐Plag is also featured with project‐based input, colorized adjacency similarity matrix, matched token highlighting, and various similarity algorithms (e.g., Cosine Similarity and Local Alignment). Three findings can be deducted from our evaluation. First, cosine‐based filtering boosts up time efficiency with a trade‐off in effectiveness. Second, penalty mechanism enhances sensitivity even though its improvement in terms of effectiveness is quite limited. Third, ES‐Plag's features are beneficial for examiners.
Adopting a participatory methodology and post‐structural epistemology: Reflections on a research project with young people
Authors: Watson Lester , Fox Rachael 
Published: September 2018

AbstractThis paper discusses the methodological processes of a qualitative PhD research project with young people aged between 12 and 17 years who are the primary carer for a family member with physical or mental health problems. The field work was conducted over 2 years in rural Australia and involved one‐on‐one discussions with young carers in their family homes. The research was grounded in post‐structural epistemology that questioned existing literature and challenged the assumptions of childhood on which it is based. Consequently, it sought to pursue a different approach to young carer research, one that adopted a participatory methodology that positioned the young people as co‐researchers. Young people were involved in the design and conduct of the research and the analysis process. This paper critiques the research space, reflecting on what was made possible and what was limited or not fully realised. The paper discusses the tensions between post‐structural theory and participatory methodology that reveal limitations to collaboration between adult researchers and young people.
Single‐Step Per‐O‐Sulfonation of Sugar Oligomers with Concomitant 1,6‐Anhydro Bridge Formation for Binding Fibroblast Growth Factors
Authors: Yeh Che‐Jui , Ku Chiao‐Chu , Lin Wei‐Chen , Fan Chiao‐Yuan , Zulueta Medel Manuel L. , Manabe Yoshiyuki , Fukase Koichi , Li Yaw‐Kuen , Hung Shang‐Cheng 
Published: September 2018

AbstractMany circulating cancer‐related proteins, such as fibroblast growth factors (FGFs), associate with glycosaminoglycans—particularly heparan sulfate—at the cell surface. Disaccharide analogues of heparan sulfate had previously been identified as the shortest components out of the sugars that bind to FGF‐1 and FGF‐2. Taking note of the typical pose of l‐iduronic acid, we conceived of per‐O‐sulfonated analogues of such disaccharides, and devised a single‐step procedure for per‐O‐sulfonation of unprotected sugars with concomitant 1,6‐anhydro bridge formation to achieve such compounds through direct use of SO3⋅Et3N as sulfonation reagent and dimethylformamide as solvent. The synthesized sugars based on the oligomaltose backbone bound FGF‐1 and FGF‐2 mostly at the sub‐micromolar level, although the tetrasaccharide analogue achieved low‐nanomolar binding with FGF‐2.
Sex influences diaphragm muscle response in exercised mdx mice
Authors: Hermes Túlio de Almeida , Kido Larissa Akemi , Macedo Aline Barbosa , Mizobuti Daniela Sayuri , Moraes Luiz Henrique Rapucci , Somazz Marco Cesar , Cagnon Valéria Helena Alves , Minatel Elaine 
Published: September 2018

AbstractPhysical exercise promotes increased muscle damage in the mdx mice, the experimental model of Duchenne muscular dystrophy. Studies suggest that the estrogen level in females makes them less susceptible to muscle injuries. The aim of this study was to characterize the diaphragm (DIA) muscle response to physical exercise in male and female mdx mice. The animals were divided into four groups: female sedentary mdx; male sedentary mdx; female mdx submitted to exercise; and male mdx mice submitted to exercise. Blood samples were used to determine creatine kinase (CK). Regenerated muscle fibers were indicated by the presence of central nucleus and also inflammation areas were determined in DIA muscle sections. The alpha and beta estrogen receptors (ER) were determined by means of immunohistochemistry evaluation in the dystrophic DIA muscle. Male mdx animals submitted to exercise showed increased CK levels and inflammatory area. The quantification of regenerated fibers was higher in male animals, submitted or not to physical exercise. Greater alpha and beta ER expression was verified in the females submitted to exercise in the DIA muscle than in the other experimental groups. Therefore, estrogen may have contributed to the prevention of increased inflammatory process and DIA injury in females submitted to exercise.
The Metal Type Governs Photocatalytic Reactive Oxygen Species Formation by Semiconductor‐Metal Hybrid Nanoparticles
Authors: Stone David , Ben‐Shahar Yuval , Waiskopf Nir , Banin Uri 
Published: September 2018

AbstractSemiconductor‐metal hybrid nanoparticles (HNPs) are promising photocatalysts for redox reactions, including water reduction for hydrogen generation and reactive oxygen species (ROS) formation. Herein we study the effect of the metal co‐catalyst type on the light‐induced ROS formation using a combination of spectrophotometric and fluorescence assays, as well as electron paramagnetic resonance spectroscopy. We find that although Pt tips are more efficient for H2 generation, hydrogen peroxide and hydroxyl radicals are formed more effectively by Au tipped HNPs. These variations are attributed to the different surface reactivity and selectivity related to the metal tip composition. The obtained understanding contributes to the optimal design of these hybrid nanosystems as photocatalysts in various ROS‐driven applications such as photopolymerization, and environmental and biomedical scenarios.
Size Controllable Metal Nanoparticles Anchored on Nitrogen Doped Carbon for Electrocatalytic Energy Conversion
Authors: Zhang Xiaolong , Romeiro Fernanda C. , Guo Si‐Xuan , Zhang Ying , Nossol Edson , Lima Renata C. , Bond Alan M. , Zhang Jie 
Published: September 2018

AbstractMetal nanoparticles (NPs) are an important class of materials for electrocatalysis. Synthesis of metal NPs with uniform particle size below 10 nm without a capping agent is challenging due to the tendency of particle aggregation to minimize surface energy. Here we demonstrate that pyrolysis of a metal‐TCNQ (TCNQ−=tetracyanoquinodimethane radical anion) compound can produce metal NPs with controllable particle sizes anchored on nitrogen doped carbon (denoted as MetalNC). NiNC and CoNC derived from Ni‐TCNQ and Co‐TCNQ with Ni and Co particle sizes below 10 nm were successfully prepared. NiNC, with a particle size of 8.8 nm, showed excellent catalytic activity for hydrogen evolution in an alkaline medium, reaching a catalytic current density of 10 mA cm−2 at an overpotential of 230 mV. CoNC, with a particle size of 1.8 nm, exhibited the capability of producing syngas by electrocatalytic CO2 reduction over a wide potential range in an acetonitrile medium containing 0.3 M H2O. An artificial photosynthesis system based on CoNC achieved faradaic efficiencies of over 70 % for production of syngas and 22 % for formate. This work demonstrates a general strategy to synthesize size controllable metal NPs supported on carbon materials for electrocatalytic energy conversion.
Gold Decoration and Photoresistive Response to Nitrogen Dioxide of WS2 Nanotubes
Authors: Polyakov Alexander Yu. , Kozlov Daniil A. , Lebedev Vasily A. , Chumakov Ratibor G. , Frolov Alexander S. , Yashina Lada V. , Rumyantseva Marina N. , Goodilin Eugene A. 
Published: September 2018

AbstractComposites of WS2 nanotubes (NT‐WS2) and gold nanoparticles (AuNPs) were prepared using aqueous HAuCl4 solutions and subjected to surface analysis. The obtained materials were jointly characterized by X‐ray photoelectron (XPS), Raman scattering (RSS), and ultraviolet photoelectron (UPS) spectroscopies. Optical extinction spectroscopy and electron energy loss spectroscopy in the scanning transmission electron microscopy regime (STEM‐EELS) were also employed to study plasmon features of the nanocomposite. It was found that AuNPs deposition is accompanied by a partial oxidative dissolution of WS2, whereas Au‐S interfacial species could be responsible for the tight contact of metal nanoparticles and the disulfide. A remarkable sensitivity of n‐type resistance of NT‐WS2 and Au‐NT‐WS2 to the adsorption of NO2 gas was also demonstrated at room temperature using periodical illumination by a 530 nm light‐emitting diode. Au‐NT‐WS2 nanocomposites are found to possess a higher photoresponse and enhanced sensitivity in the 0.25–2.0 ppm range of NO2 concentration, as compared to the pristine NT‐WS2. This behaviour is discussed within the physisorption‐charge transfer model to explore sensing properties of the nanocomposites.
Closing the Loop: Triazolylpyridine Coordination Drives the Self‐Assembly of Metallomacrocycles with Tunable Topologies for Small‐Molecule and Guanine‐Quadruplex Recognition
Authors: Miron Caitlin E. , Colden Leung Madelaine R. , Kennedy Emily I. , Fleischel Olivier , Khorasani Mona Ashraf , Wu Nan , Mergny Jean‐Louis , Petitjean Anne 
Published: September 2018

AbstractThe 2‐(1,2,3‐triazol‐4‐yl)pyridine motif, with its facile “click” synthesis and remarkable coordinative properties, is an attractive chelate for applications in the metal‐directed self‐assembly of intricate three‐dimensional structures. Organic ligands that bear two such chelates bridged by flexible hinge moieties readily undergo self‐assembly with metal ions of different coordination geometries to generate a series of topologically diverse metallomacrocycles that can be used for numerous applications. Herein, the synthesis and self‐assembly of one such ligand with zinc(II), copper(II), and palladium(II) ions is reported, and the stability of the resulting metallomacrocycles described. An investigation into the use of these metallomacrocycles for the recognition of both small‐molecule substrates, such as deoxyguanosine monophosphate, and larger biological assemblies, such as DNA and RNA guanine quadruplexes, is also described.
An Electron‐Rich Calix[4]arene‐Based Receptor with Unprecedented Binding Affinity for Nitric Oxide
Authors: Wang Denan , Ivanova Lena V. , Ivanov Maxim V. , Mirzaei Saber , Timerghazin Qadir K. , Reid Scott A. , Rathore Rajendra 
Published: September 2018

AbstractCalixarenes have found widespread application as building blocks for the design and synthesis of functional materials in host–guest chemistry. The ongoing desire to develop a detailed understanding of the nature of NO bonding to multichromophoric π‐stacked assemblies led us to develop an electron‐rich methoxy derivative of calix[4]arene (3), which we show exists as a single conformer in solution at ambient temperature. Here, we examine the redox properties of this derivative, generate its cation radical (3+.) using robust chemical oxidants, and determine the relative efficacy of its NO binding in comparison with model calixarenes. We find that 3/3+. is a remarkable receptor for NO+/NO, with unprecedented binding efficacy. The availability of precise experimental structures of this calixarene derivative and its NO complex, obtained by X‐ray crystallography, is critically important both for developing novel functional NO biosensors, and understanding the role of stacked aromatic donors in efficient NO binding, which may have relevance to biological NO transport.
Preparation of Siloxane‐Based Microporous Crystals from Hydrogen‐Bonded Molecular Crystals of Cage Siloxanes
Authors: Sato Naoto , Kuroda Yoshiyuki , Wada Hiroaki , Shimojima Atsushi , Kuroda Kazuyuki 
Published: September 2018

AbstractControlled assembly of siloxane‐based building blocks provides a rational approach toward designed architectures of silica‐based porous materials. Here, a non‐hydrothermal method to prepare microporous crystals from cage‐type oligosiloxanes is reported. The crystals formation occurs through an ordered assembly assisted by hydrogen bonds and subsequent intermolecular connection by silylation. Cage siloxanes with a double‐four ring (D4R) structure were modified with dimethylsilanol groups. Intermolecular hydrogen bonding of the dimethylsilanol groups led to the formation of a pillared‐layer structure consisting of D4R units. A new crystalline microporous material retaining the original ordered arrangement was realized by bridging adjacent cages within the crystals by direct silylation of the silanol groups with trichlorosilane. The use of this silylating agent created microporous crystals containing Si−H groups, proving the advantages of the proposed concept.
An Optical Microreactor Enabling In Situ Spectroscopy Combined with Fast Gas‐Liquid Mass Transfer
Authors: Ponce Sebastian , Christians Hauke , Drochner Alfons , Etzold Bastian J. M. 
Published: September 2018

AbstractA liquid core waveguide membrane microreactor combining intense light matter interaction for in situ sensing and/or photo activation and excellent gas‐liquid mass transfer is presented. Basis is a liquid‐filled Teflon AF tube, which provides light transmission within the liquid core and gas permeation through the wall. The study shows that a wide spectral range (UV‐vis) with relatively low optical losses is accessible. A working regime preventing gas bubble formation was deduced for semi‐batch and in flow operation for gas pressures up to 8 bar. Residence time distribution experiments revealed Bodenstein numbers from 21 to 60 in the studied flow range. As example, the methylene blue catalyzed oxidation of D‐glucose by O2 was studied at different pressures, while methylene blue was monitored in situ.
Population‐based priors in cardiac model personalisation for consistent parameter estimation in heterogeneous databases
Authors: Molléro Roch , Pennec Xavier , Delingette Hervé , Ayache Nicholas , Sermesant Maxime 
Published: September 2018

AbstractPersonalised cardiac models are a virtual representation of the patient heart, with parameter values for which the simulation fits the available clinical measurements. Models usually have a large number of parameters while the available data for a given patient are typically limited to a small set of measurements; thus, the parameters cannot be estimated uniquely. This is a practical obstacle for clinical applications, where accurate parameter values can be important. Here, we explore an original approach based on an algorithm called Iteratively Updated Priors (IUP), in which we perform successive personalisations of a full database through maximum a posteriori (MAP) estimation, where the prior probability at an iteration is set from the distribution of personalised parameters in the database at the previous iteration. At the convergence of the algorithm, estimated parameters of the population lie on a linear subspace of reduced (and possibly sufficient) dimension in which for each case of the database, there is a (possibly unique) parameter value for which the simulation fits the measurements. We first show how this property can help the modeller select a relevant parameter subspace for personalisation. In addition, since the resulting priors in this subspace represent the population statistics in this subspace, they can be used to perform consistent parameter estimation for cases where measurements are possibly different or missing in the database, which we illustrate with the personalisation of a heterogeneous database of 811 cases.
Controllable Elasticity Storage and Release in CuO−Pt Core‐Shell Nanowires
Authors: Cao Fan , Li Lei , Zheng He , Wen Guangyu , Zhao Ligong , Liu Huihui , Jia Shuangfeng , Wang Zhao , Hu Yongming , Gu Haoshuang , Wang Jianbo 
Published: September 2018

AbstractOne‐dimensional (1D) core‐shell heterostructures can exhibit novel and flexible properties when two different materials are combined. In this work, Pt nanoparticles are directly deposited onto CuO nanowires (NWs), forming 1D CuO−Pt core‐shell heterostructures with elastic and plastic behaviors dominating in the CuO‐core and Pt‐shell, respectively, under bending deformation. Interestingly, the plastically deformed Pt‐shell leads to a delayed or even terminated elasticity restoration of the CuO‐core NWs after unloading. Moreover, the release of the elasticity in CuO NW can be easily regulated not only via controlling the diameter of the CuO−Pt NWs, but also by thermal heating. The result shows a flexible 1D nanostructure with potential applications in micro/nano electro‐mechanical systems, such as mechanical energy storage and thermal sensors.
Impact of Alkali‐Metal Impregnation on MIL‐101 (Cr) Metal‐Organic Frameworks for CH4 and CO2 Adsorption Studies
Authors: Kayal Sibnath , Chakraborty Anutosh 
Published: September 2018

AbstractIn this article, an assessment of the impact of alkali‐metal‐ion impregnation on metal–organic frameworks (MOF) is presented employing CH4 and CO2 adsorption isotherm data. At first, the parent MOF, MIL‐101(Cr), is prepared by a fluorine‐free hydrothermal reaction procedure and impregnated with Li, Na, and K alkali cations. These synthesised MOFs are characterized by N2 adsorption/desorption isotherm analysis, X‐ray diffraction (XRD) measurement and scanning electron microscopy (SEM). The amount of CH4 and CO2 adsorption uptakes onto parent and alkali ions impregnated MIL‐101(Cr) are conducted for wide ranges of pressures and temperatures. For understanding the effects of MOF synthesis process and alkali cations impregnation, CH4/CO2 uptakes on perfect crystalline MIL‐101(Cr) MOF are also calculated by Grand Canonical Monte Carlo (GCMC) simulation and the results are compared with experimental isotherm data of synthesised parent and alkali ions impregnated MIL‐101(Cr) MOFs. It is found that the limiting uptakes and the isosteric heats are mainly influenced by the modified adsorbent structures due to alkali ions impregnation and the polarity of adsorbate molecules. Employing Dubinin‐Astakhov (DA) equation, the energy distribution of synthesised parent and alkali doped MIL‐101 (Cr) MOFs are also presented to identify the alkali cation effects and the surface heterogeneity.
Ultrafast Maximum‐Quantum NMR Spectroscopy for the Analysis of Aromatic Mixtures
Authors: Concilio Maria Grazia , Jacquemmoz Corentin , Boyarskaya Dina , Masson Géraldine , Dumez Jean‐Nicolas 
Published: September 2018

AbstractMaximum‐quantum (MaxQ) NMR experiments have been introduced to overcome issues related to peak overlap and high spectral density in the NMR spectra of aromatic mixtures. In MaxQ NMR, spin systems are separated on the basis of the highest‐quantum coherence that they can form. MaxQ experiments are however time consuming and methods have been introduced to accelerate them. In this article, we demonstrate the ultrafast, single‐scan acquisition of MaxQ NMR spectra using spatial encoding of the multiple‐quantum dimension. So far, the spatial encoding methodology has been applied only for the encoding of up to double‐quantum coherences, and here we show that it can be extended to higher coherence orders, to yield a massive reduction of the acquisition time of multi‐quantum spectra of aromatic mixtures, and also to monitor chemical reactions.
Direct Correlation between Adsorption Energetics and Nuclear Spin Relaxation in a Liquid‐saturated Catalyst Material
Authors: Robinson Neil , Robertson Christopher , Gladden Lynn F. , Jenkins Stephen J. , D'Agostino Carmine 
Published: September 2018

AbstractThe front cover artwork is provided by the groups of Stephen J. Jenkins and Lynn F. Gladden at the University of Cambridge, and Carmine D'Agostino at the University of Manchester. The image shows alcohol adsorption at a silica catalyst support surface, the energetics of which may be investigated through nuclear spin relaxation measurements. Read the full text of the Article at 10.1002/cphc.201800513.
The Recycling of Spent Ammonia Borane with HBr/AlBr3 and Other HX/AlX3‐Based Schemes
Authors: Reller Christian , Mertens Florian 
Published: September 2018

AbstractAlthough the development and application of a BNHx‐waste recycling process is one of the major prerequisites for the use of ammonia borane as hydrogen source material, most research groups in the field have focused on AB hydrogen release and only few groups have worked on the development of energetically viable recycling schemes. In our work we target the development of a closed recycling process containing three desired steps: superacid break‐up of the BNHx‐waste, catalytic hydrodehalogenation of the generated boron halide, and base‐exchange between Et3NBH3 and ammonia. Catalytic hydrodehalogenation provides a convenient means to generate B−H bonds using molecular hydrogen, avoiding potentially energetically expensive reduction reagents.
Synthesis of Functionalized Ferrocene Derivatives from Donor−Acceptor Cyclopropanes
Authors: González‐Pelayo Silvia , López Luis A. 
Published: September 2018

AbstractThe TfOH‐catalyzed reaction of aryl‐substituted donor–acceptor cyclopropane derivatives with ferrocene provided new functionalized ferrocene derivatives. This process exhibited a reasonable scope with respect to the cyclopropane component affording the corresponding alkylated ferrocene derivatives in useful yields. An alternative approach to these functionalized ferrocene derivatives involving arylation of a ferrocene‐decorated donor–acceptor cyclopropane derivative is also disclosed. Both processes rely on a facile regioselective ring‐opening of the donor−acceptor cyclopropane.
Development of Electrochemical Sensor Based on Glassy Carbon Electrode Modified with a Molecularly Imprinted Copolymer and its Application for Detection of Repaglinide
Authors: Roushani Mahmoud , Jalilian Zeynab 
Published: September 2018

AbstractAt the present study, we have reported a new sensor based on immobilized molecularly imprinted polymer on the surface of a glassy carbon electrode (GCE) through electro polymerization of o‐Dihydroxybenzene (o‐DB) and o‐phenylenediamine (o‐PD) as monomers for direct determination of repaglinide (RPG) as target molecule. RPG is a new generation of oral anti‐diabetic drugs that has a rapid onset of action and short half‐life of approximately 1 h. So developing a controlled system with good sensitivity and selectivity is required to eliminate its adverse effects. Under the optimized conditions, the proposed sensor showed a good selectivity to detect RPG among compounds with similar structure and properties with RPG. The linear range for analysis were 0.005–1.0 μM and detection limit 1.8 nM was achieved. Furthermore, the experimental results showed that the proposed sensor was highly selective and sensitive to detect RPG in real samples such as blood serum, urine and RPG tablet.