bluuebunny/crossref_metadata_2025_split huggingface dataset:
Creating a Common Fate: The Negotiation Meeting of the Bai’s Ethnonym / 制造共同命运:以“白族”族称的协商座谈会为例
Authors: Yongjia Liang 
Published: April 2015

AbstractBased on archival studies, this paper analyses an “ethnic symposium” organized by the party committee of the Dali Prefecture in 1956. The author argues that determining the Bai as the ethnonym is a process of “name standardization”. It was neither the decision of the state power, nor was it led by the scholar’s opinion, but by the local elites’ deliberate complicity with the state project. It could be thus called a process of “creating a common fate” under the combined principles of the discourse of “liberation-cum-backwardness”, historical evidence, anti-discrimination, legibility to the ordinary member, conformity to the communist value, etc. It defamiliarizes the everyday knowledge of the people and creates a liminal stage in which a shared fate could be felt. Therefore, this paper is not intended to deconstruct the ethnic identity, but attempts to provide the empirical analysis on a sociological issue of knowledge through contextualizing the usage and implication of the word “minzu” (ethnicity, nation).
Practical synthesis of 2,3-dimethoxy-5-hydroxymethyl-6-methyl-1,4-benzoquinone
Authors: Wang Jin , Li Shuo , Yang Tao , Zeng Jin-Rong , Yang Jian 
Published: April 2015

Abstract2,3-dimethoxy-5-hydroxymethyl-6-methyl-1,4-benzoquinone (V) was prepared with a 75 % yield by means of a reaction sequence starting from 2,3,4,5-tetramethoxytoluene via Blanc chloromethylation reaction, Kornblum oxidation, NaBH
Electrochemical enzymatic biosensors based on metal micro-/nanoparticles-modified electrodes: a review
Authors: Dimcheva Nina D. , Horozova Elena G. 
Published: April 2015

AbstractThe functions of metal structures of micro- or nano-dimensions in the sensing mechanisms of amperometric enzyme-based biosensors are considered in the light of the principles of detection of the latter. The applications of metal mono- or bimetallic nanoparticles-modified materials as catalytic electrodes in the fabrication of first-generation and the role which metal nanoparticles play in promoting or enhancing the electron transfer rates in third-generation electrochemical biosensors are reviewed. Some examples of gold NPs functionalised with enzymes via gold-thiol chemistry as a strategy for enzyme immobilisation and spatial orientation when developing amperometric biosensors are also discussed.
Interactions of antifouling monolayers: Energy transfer from excited albumin molecule to phenol red dye
Authors: Xu Hui , Wallace Robert , Hepel Maria 
Published: April 2015

AbstractAlbumin, as an antifouling agent preventing non-specific adsorption, is widely applied in biosensor construction and in the design of nanocarriers for theranostic applications. However, albumin is not completely inert and it interacts with many endogenous and exogenous compounds. The present work investigates the interactions of bovine serum albumin (BSA) with phenol red dye (PR), a common component of cell-growth media. PR was found to bind to BSA, with the affinity constant KA = (2.5 ± 0.8) × 10
Catalytic wet peroxide oxidation of m-cresol over Fe/γ-Al2O3 and Fe–Ce/γ-Al2O3
Authors: Liu Pei-Juan , Wei Huang-Zhao , He Song-Bo , Sun Cheng-Lin 
Published: April 2015

AbstractCatalytic wet peroxide oxidation (CWPO) of m-cresol over Fe/γ-Al
Low-temperature enzymatic hydrolysis resolution in mini-emulsion media
Authors: Lourenço Nuno M. T. , Matias Sara C. , Altas Margarida C. , Fonseca Luis P. 
Published: April 2015

AbstractA low-temperature mini-emulsion medium for the enzymatic resolution of 1-phenylethanol is described for the first time. The enzymatic hydrolysis resolution of 1-phenylethyl esters with different chain-lengths in the presence of Candida antarctica lipase B in mini-emulsion media was shown to be significantly controlled by temperature. In this system, the direct effect of temperature on the mini-emulsion size was observed. For the longer 1-phenylethyl ester, 1-phenylethyl dodecanoate, the enzymatic resolution was promoted exclusively at low temperatures. The preparative mini-emulsion enzymatic reaction of 1-phenylethyl dodecanoate at 4°C afforded the isolation of (R)-phenylethanol with a yield of 36 % with an ee of 99 %. (S)-Phenylethanol was isolated with a 51 % yield with an ee of 79 %.
Graphene as signal amplifier for preparation of ultrasensitive electrochemical biosensors
Authors: Filip Jaroslav , Kasák Peter , Tkac Jan 
Published: April 2015

AbstractEarly diagnosis of diseases with minimal cost and time-consumption has become achievable due to recent advances in the development of biosensors. These devices use biorecognition elements for the selective interaction with an analyte and the signal read-out is obtained via different types of transducers. The operational characteristics of biosensors have been reported as improving substantially when a diverse range of nanomaterials is employed. This review presents the construction of electrochemical biosensors based on graphene, atomically thin 2D carbon crystals, a nanomaterial currently the subject of intensive studies. Here, the most attractive directions for graphene applications in biosensor preparation are discussed, including novel detection and amplification schemes exploiting graphene’s unique electrochemical, physical and chemical properties. There is probably a very bright future for graphene-based biosensors, but much further work is required to fulfill the high expectations.
Surface plasmon resonance application in prostate cancer biomarker research
Authors: Damborský Pavel , Madaboosi Narayanan , Chu Virginia , Conde João P. , Katrlík Jaroslav 
Published: April 2015

AbstractProstate cancer (PCa) diagnostics can be effectively addressed using sensor-based approaches. Proper selection of biomarkers to be included in biosensors for accurate detection becomes the need of the hour. Such biosensor and biochip technologies enable fast and efficient determination of proteins and provide a remarkable insight into the changes in the protein structure, such as aberrant glycosylation, which can increase the performance, sensitivity and specificity of clinic assays. However, for a thorough comprehension of such complex protein modifications, it is crucial to understand their biospecific interactions. Surface plasmon resonance (SPR), one of the most rapidly developing techniques for measuring real-time quantitative binding affinities and kinetics of the interactions of antigens and antibodies, was chosen as an appropriate tool for this purpose. Herein, experiments on the interactions of antibodies specific against different epitopes of free and complexed prostate-specific antigen (PSA), a prominent PCa biomarker, are presented with two main aims: (i) to continue as lectin glycoprofiling studies and; (ii) to be used in microfluidic immunoassay-based platforms for point-of-care devices. Various PSA-specific antibodies were covalently immobilized on the biochip surface via amine coupling, and free or complexed PSA was injected into the dual-flow channels of the SPR device. Kinetic parameters and affinity constants of these interactions, as well as cross-reactivities of the used antibodies were determined. The sandwich assay for PSA determination was developed employing both primary and secondary anti-PSA antibodies. Sensitivity of the assay was 3.63 nM
Oxidation of 4-nitro-o-xylene with nitric acid using N-hydroxyphthalimide under phase transfer conditions
Authors: Wei Song-Bo , Tang Bo , Peng Xin-Hua 
Published: April 2015

Abstract4-Nitro-o-xylene was selectively oxidized to 2-methyl-4-nitrobenzoic acid using dilute nitric acid as the oxidizing agent under atmospheric pressure. The oxidation of 4-nitro-o-xylene was effectively promoted by an addition of radical initiators. Under reflux, 2-methyl-4-nitrobenzoic acid was afforded in high yield using nitric acid combined with N-hydroxyphthalimide, cobalt dichloride (CoCl
Mass transfer examination in electrodialysis using limiting current measurements
Authors: Káňavová Natália , Krejčí Anna , Benedeková Martina , Doležel Marek , Machuča Lubomír 
Published: April 2015

AbstractThe impact of electrodialysis module characteristics on mass transfer was examined using the limiting current method. The current-voltage curves of different electrodialysis modules were measured and limiting currents were determined using the derivative method. The mass transfer coefficients were calculated and the parameters of their dependence on linear flow velocity were estimated. From these the impact of spacer thickness, spacer net type, membrane type, and module geometry were evaluated. It was found that the impact of spacer thickness was almost negligible within the examined range, but a decrease in the mass transfer coefficient could be expected in the case of thicker spacers. By contrast, the spacer net type and type of membrane were found to be very important parameters able to significantly influence the mass transfer. By modifying the module geometry, the mass transfer coefficient could also be altered and, only in this case, the exponential parameter of the dependence was changing. The parameters thus determined may be used to calculate the limiting current in a wide range of operational conditions and may help predict the performance of different electrodialysis module types
Development of transition state analogue inhibitors for N-acetylglycosyltransferases bearing D-psicoor D-tagatofuranose scaffolds
Authors: Baráth Marek , Lin Chun-Hung , Tvaroška Igor , Hirsch Ján 
Published: April 2015

AbstractNew potential transition state analogue inhibitors for N-acetylglucosyltransferases (GnTs) were synthesised. These compounds based on psico- and tagatofuranose (structure) scaffold contained a 2-thiophenyl-1-O-diethylphosphate moiety mimicking the proposed model of the transition state of the enzymatic reaction catalysed by N-acetylglucosyltransferases. The synthesised compounds as well as their precursors were fully characterised by NMR, optical rotation and mass techniques. Anomeric configuration of tagatofuranose derivatives was confirmed by X-ray crystallography. Two types of potential human glycosyltransferase (GnTs) inhibitors representing donor UDP-GlcNAc, assigned for biological assays on human GnTs, were prepared.
Determination of diffusivity from mass transfer measurements in a batch dialyzer: numerical analysis of pseudo-steady state approximation
Authors: Palatý Zdeněk , Bendová Helena 
Published: April 2015

AbstractThe presented paper deals with the numerical analysis of pseudo-steady state conditions used in the modelling of the batch dialysis process. First, under specified conditions, time dependences of component concentrations and liquid volumes in both compartments were generated using a rigorous model based on Fick’s second law. From these data, the diffusion coefficient of the component in the membrane was calculated using a simplified model based on Fick’s first law. The specified coefficient was then compared with the calculated one. Numerical analysis revealed that in case of not too thick membranes, sufficiently high values of the diffusion coefficient, high intensity of mixing and considering the concentration and volume data in compartments I and II, the pseudo-steady state conditions can be considered as a good approximation of the real state
New insights into bromination process: effective preparation of Ambroxol
Authors: Xu Jun-Hui , Ma Yan-Qiong , Wei Jian-Ping , Li Fang-Mei , Peng Xin-Hua 
Published: April 2015

AbstractAmbroxol used as an expectorant in treating respiratory diseases was effectively prepared with a total yield of 62 %, with o-toluidine as the feedstock via successive procedures of electrophilic bromination, acetylation, radical benzylic bromination, N-alkylation and hydrolysis processes. The addition of aqueous hydrogen peroxide could enhance the utilisation of liquid bromine in the electrophilic bromination of o-toluidine, avoiding the hazardous HBr generated as a by-product. In addition, liquid bromine promoted by MnO
Determination of formaldehyde by flow injection analysis with spectrophotometric detection exploiting brilliant green–sulphite reaction
Authors: Bolognesi Lúcio , dos Santos Eder J. , Abate Gilberto 
Published: April 2015

AbstractA method for the determination of formaldehyde by flow injection analysis with spectrophotometric detection is proposed, based on retarding the reaction between brilliant green and sulphite by the addition of formaldehyde; this was investigated for formaldehyde quantification in extracts from wood-based panels. For the first time, a heating step was explored, providing a sample throughput of 50 analyses per hour, with a limit of detection of 0.02 mg L
Ultra-trace arsenic and mercury speciation and determination in blood samples by ionic liquid-based dispersive liquid–liquid microextraction combined with flow injection-hydride generation/cold vapor atomic absorption spectroscopy
Authors: Shirkhanloo Hamid , Khaligh Aisan , Mousavi Hassan Zavvar , Eskandari Mohammad Mehdi , Miran-Beigi Ali Akbar 
Published: April 2015

AbstractA simple, fast, and sensitive method for speciation and determination of As (III, V) and Hg (II, R) in human blood samples based on ionic liquid-dispersive liquid-liquid microextraction (IL-DLLME) and flow injection hydride generation/cold vapor atomic absorption spectrometry (FI-HG/CV-AAS) has been developed. Tetraethylthiuram disulfide, mixed ionic liquids (hydrophobic and hydrophilic ILs) and acetone were used in the DLLME step as the chelating agent, extraction and dispersive solvents, respectively. Using a microwave assisted-UV system, organic mercury (R-Hg) was converted to Hg(II) and total mercury amount was measured in blood samples by the presented method. Total arsenic content was determined by reducing As(V) to As(III) with potassium iodide and ascorbic acid in a hydrochloric acid solution. Finally, As(V) and R-Hg were determined by mathematically subtracting the As(III) and Hg(II) content from the total arsenic and mercury, respectively. Under optimum conditions, linear range and detection limit (3σ) of 0.1-5.0 μg L
Morphology, structure, and photoactivity of two types of graphene oxide–TiO2 composites
Authors: Peter Anca , Mihaly-Cozmuta Leonard , Mihaly-Cozmuta Anca , Nicula Camelia , Jastrzębska Agnieszka , Kurtycz Patrycja , Olszyna Andrzej 
Published: April 2015

AbstractTwo types of graphene oxide-TiO
A novel efficient magnetic core–zeolitic shell nanocatalyst system: preparation, characterization and activity
Authors: Padervand Mohsen , Vossoughi Manouchehr , Janfada Behdokht 
Published: April 2015

AbstractAnalcime shell-nickel ferrite core microspheres were decorated with Pd and Pt nanoparticles with the aid of an ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM-PF6). The samples thus prepared were characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), nitrogen adsorption-desorption isotherms, transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM) methods. The XRD patterns confirmed the growth of a zeolitic layer on the surface of the magnetic cores. The thermogravimetric analysis (TGA) curve clearly indicated the thermal decomposition of the loaded IL, which confirmed the presence of BMIM-PF6 in the structures. In addition, EDX analysis indicated that the samples contained 2.5 mass % of noble metal. The metallic species can be adsorbed on the modified surface and/or penetrate into the zeolitic channels in the structures. The results indicate that the X-IL/An/S/NF (X = Pt or Pd) metallic nanoparticles supported core-shell catalystssamples were able to catalyse the selective oxidation of cyclohexene to 2-cyclohexene-1-ol under the induced conditions. The catalysts continued to be active after recycling up to 5 times. Eventually, a suitable mechanism was proposed for the selective oxidation of cyclohexene over the catalysts.
Newly synthesized indolizine derivatives – antimicrobial and antimutagenic properties
Authors: Olejníková Petra , Birošová Lucia , Švorc Ľubomír , Vihonská Zuzana , Fiedlerová Martina , Marchalín Štefan , Šafář Peter 
Published: April 2015

AbstractA series of indolizine derivatives have been synthesized and subjected to antibacterial screening studies. Antibacterial activity of 21 derivatives was investigated against Staphylococcus aureus, Mycobacterium smegmatis, Salmonella typhimurium and Escherichia coli; also, the sensitivity of model yeast Candida parapsilosis and some model filamentous fungi Aspergillus fumigatus, Alternaria alternata, Botrytis cinerea and Microsporum gypseum was tested. Newly synthesized indolizine derivatives have shown selective toxicity to Gram-positive bacteria S. aureus and were also considered to be able to inhibit the acidoresistant rod M. smegmatis. Derivative XXI has shown the highest inhibition effect with the bacteriostatic effect on the cells at the concentration of 25 μg mL
Voltammetric determination of B1 and B6 vitamins using a pencil graphite electrode
Authors: David Iulia Gabriela , Florea Mihai-Alexandru , Cracea Oana Georgiana , Popa Dana Elena , Buleandra Mihaela , Iorgulescu Emilia Elena , David Vasile , Badea Irinel Adriana , Ciucu Anton Alexandru 
Published: April 2015

AbstractDue to the importance of B
Efficient method for the synthesis of polysubstituted 2,6-dicyanoanilines by one-pot three-component tandem reaction of malononitrile with α,β-unsaturated imines
Authors: Chen Wei , Lu Xiao-Yan 
Published: April 2015

AbstractA facile and efficient one-pot synthesis of polysubstituted benzenes was achieved via the Michael addition of malononitrile with α,β-unsaturated imines and a sequential tandem reaction. This reaction generates polysubstituted 2,6-dicyanoanilines in high yields (15 examples, isolated yields of 57-91 %), and proceeds under mild reaction conditions (60°C, 10 min). In addition, a possible mechanism accounting for the reaction is proposed.
Electrosynthesis of poly(p-phenylene) and poly(p-phenylene/pyrrole) films under controlled humidity
Authors: Eiras Carla , Foschini Maurício , Soares Juliana C. , Gonçalves Débora 
Published: April 2015

AbstractPoly(p-phenylene/pyrrole) (PPP-PPY) films were electrochemically synthesised on transparent indium-tin-oxide-covered glass (ITO) electrodes. The presence of two monomers, p-phenylene and pyrrole, in the polymerisation medium facilitated the synthesis process, yielding electroactive, uniform and stable films. In order to obtain materials with improved quality, PPP, PPY and PPP-PPY films were prepared in a mild, dry atmosphere. The morphological, electrochemical and optical properties were compared for different films obtained by varying the number of cycles with and without controlling humidity.
Is climatic regionalization in frame of estimated pedologic-ecological system actual in 21st century?
Authors: Středová Hana , Chuchma Filip 
Published: April 2015

Abstract
Climatic variables defining climatic regions of estimated pedologic-ecological system (EPEU) were calculated based on fifty-year climatic data from 1961 to 2010. Obtained results were subsequently compared to intervals determining individual climatic regions defined by previous climatic data (1901-1950). In many agricultural intense areas sum of air temperature and mean air temperature exceeded upper limit. In terms of precipitation it is especially noticeable in the wet (higher) altitudes. Significant volatility was found for probability of dry periods from April to September. The values of the moisture certainty from April to September for the period 1961-2010 reached to several tens. In the final analysis, the only safe prediction is that the present and future are likely to be very different from the past. It is necessary to take it into account for actualization of EPEU methodology. Among the strongest arguments justifying the need of this actualization is in particular climate development since 1901, technological progress and improved measurement technology as well as automation and development of climate models coupled with simulations of complex characteristics and estimates of future climate. It is evident that the development of climate and other factors have an enormous impact on soil fertility. This should be also taken into consideration when fixing the official price. It is necessary to consider the possible replacement of the existing characteristics by more suitable (for example soil moisture balance). The findings might be summarized in few words: old climatic regions do not reflect actual climatic conditions.
The Software Cost Estimation Method Based on Fuzzy Ontology
Authors: Plecka Przemysław , Bzdyra Krzysztof 
Published: April 2015

Abstract
In the course of sales process of Enterprise Resource Planning (ERP) Systems, it turns out that the standard system must be extended or changed (modified) according to specific customer’s requirements. Therefore, suppliers face the problem of determining the cost of additional works. Most methods of cost estimation bring satisfactory results only at the stage of pre-implementation analysis. However, suppliers need to know the estimated cost as early as at the stage of trade talks. During contract negotiations, they expect not only the information about the costs of works, but also about the risk of exceeding these costs or about the margin of safety. One method that gives more accurate results at the stage of trade talks is the method based on the ontology of implementation costs. This paper proposes modification of the method involving the use of fuzzy attributes, classes, instances and relations in the ontology. The result provides not only the information about the value of work, but also about the minimum and maximum expected cost, and the most likely range of costs. This solution allows suppliers to effectively negotiate the contract and increase the chances of successful completion of the project.
Towards an Analysis Methodology for Identifying Root Causes of Poor Delivery Performance
Authors: Nielsen Peter , Do Ngoc Anh Dung , Eriksen Thomas , Nielsen Izabela 
Published: April 2015

Abstract
This paper presents an analysis methodology for establishing the demand stability of the planning environment faced by a company and the impact on the stability from changes to sales order. The methodology focuses on three critical planning parameters derived from customer orders: product mix, volume, and order sizes. Furthermore, the methodology links the delivery performance of a company to the changes made to sales orders. Based on a test case application of the methodology, it is concluded that by accepting changes, the demand faced by the case company has become more unstable on product mix, volume, and the number of order lines per period, while some added stability has been achieved with regards to the order size distributions. Ultimately, by applying the methodology to the case company, it is found that by changing the sales orders, the company does not improve the delivery performance.