bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ion inducing surface interaction for improved SERS detection of melamine in fertilizer and soil
Authors: Guo Xiaoyu , Wu Yiping , Ying Ye , Wen Ying , Wang Feng , Ke Qinfei , Yang Haifeng 
Published: November 2017

AbstractUltra‐sensitive platform for surface‐enhanced Raman scattering detecting trace melamine is constructed by adding Fe3+ ions. In this work, first, inositol hexaphosphate (IP6) micelle capped silver nanoparticles (IP6@AgNPs) is synthesized. Taking advantage of the strong interaction of Fe3+ and IP6 micelle, surface‐enhanced Raman scattering activity of IP6@AgNPs could be improved by formation of more “hot spots” induced by rational addition of due amount Fe3+. Second, IP6@AgNPs binding Fe3+ could offer the anchoring sites to capture melamine molecules due to containing NH group and/or N atom. Such Fe3+ acted as dual functions is beneficial to elevating sensitivity of determining trace melamine in water, fertilizer, and soil samples with the limits of detection about 1.26, 1.26, and 63.0 ppb, respectively. This proposed assay based on a portable Raman system could monitor real samples without complicated pretreatment, which is perspective to inspect trace melamine on‐field in water and soil environment.
Resonant Raman scattering and ESR study of ET salts with rhenium‐containing anions
Authors: Barszcz Bolesław , Bednarski Waldemar , Starodub Vladimir A. , Golichenko Alexander A. , Kravchenko Andrey V. , Shtemenko Alexander V. 
Published: November 2017

AbstractTwo charge‐transfer salts of ET (bis(ethylenedithio)tetrathiafulvalene or BEDT‐TTF) molecule and the anions containing multiple Re–Re bond have been investigated using Raman scattering and electron spin resonance (ESR) spectroscopies. Q‐band ESR study allowed to record well‐split ESR spectra and determine spectroscopic splitting coefficients of ET+• radicals. The ESR data show the existence of two types of ET molecules in ET2[Re2Cl8] and one type in ET[Re2Br6CH3COO]⋅0.5(C2H3Cl3) that is consistent with the structural data. Additionally, the antiferromagnetic coupling within the ET dimers at low temperature was detected. The charge +1 e per ET molecule in both salts have been determined from the position of the vibrational modes ν2 and ν3 (Ag) of the ET molecule and compared with values obtained from the bond lengths analysis. The excitation line 633 nm was used to obtain the resonant Raman spectra of the salts. The enhanced anion fundamental vibrations and overtones show typical resonant behaviour. Moreover, the position of the band related to the Re–Re stretching vibration confirm the quadruple nature of the metal–metal bonds in the anions.
Simple and accurate method for determining dissolved inorganic carbon in environmental water by reaction headspace gas chromatography
Authors: Xie Wei‐Qi , Gong Yi‐Xian , Yu Kong‐Xian 
Published: November 2017

AbstractWe investigate a simple and accurate method for quantitatively analyzing dissolved inorganic carbon in environmental water by reaction headspace gas chromatography. The neutralization reaction between the inorganic carbon species (i.e. bicarbonate ions and carbonate ions) in environmental water and hydrochloric acid is carried out in a sealed headspace vial, and the carbon dioxide formed from the neutralization reaction, the self‐decomposition of carbonic acid, and dissolved carbon dioxide in environmental water is then analyzed by headspace gas chromatography. The data show that the headspace gas chromatography method has good precision (relative standard deviation ≤ 1.63%) and accuracy (relative differences ≤ 5.81% compared with the coulometric titration technique). The headspace gas chromatography method is simple, reliable, and can be well applied in the dissolved inorganic carbon detection in environmental water.
Assessing the economic values of World Heritage Sites and the effects of perceived authenticity on their values
Authors: Kim Hyounggon , Oh Chi‐Ok , Lee Sangkwon , Lee Soojin 
Published: November 2017

AbstractAuthenticity of tourism sites is expected to positively affect their economic values because tourists preferably visit sites perceived as more authentic. This study aims to examine the extent to which consumers' perceived authenticity affects economic values of the two World Heritage Sites in Korea. This study treats perceived authenticity as the negotiated concept between the essentialist and constructivist discourses. Study results show that the high authenticity group evaluated the economic benefits of heritage sites higher than the low authenticity group. The results pertain to managerial and theoretical implications that focus on the importance of authentication process in heritage tourism sites.
The fractional laser‐induced coagulation zone characterized over time by laser scanning confocal microscopy—A proof of concept study
Authors: Banzhaf Christina A. , Lin Lynlee L. , Dang Nhung , Freeman Michael , Haedersdal Merete , Prow Tarl W. 
Published: November 2017

BackgroundAblative fractional laser (AFXL) is an acknowledged technique to increase uptake of topical agents in skin. Micro thermal ablation zones (MAZs) consist of ablated vertical channels surrounded by a coagulation zone (CZ). Laser scanning confocal microscopy (LSCM) images individual MAZs at 733 nm (reflectance confocal microscopy (RCM)). Further, LSCM can image sodium fluorescein (NaF) fluorescence with 488 nm excitation (fluorescence confocal microcopy (FCM)), a small hydrophilic test molecule (370 MW, log P ‐1.52), which may simulate uptake, bio‐distribution and kinetics of small hydrophilic drugs.ObjectivesTo explore LSCM for combined investigations of CZ thickness and uptake, bio‐distribution and kinetics of NaF in AFXL‐exposed skin.Study Designs/Methods and materialsExcised human abdominal skin samples were exposed to AFXL (15 mJ/microbeam, 2% density) and NaF gel (1000 μg/ml, 10 μl/cm2) in six repetitions, including untreated control samples. CZ thickness and spatiotemporal fluorescence intensities (FI) were quantified up to four hours after NaF application by RCM and FCM. Test sites were scanned to a depth of 200 μm, quantifying thickness of skin compartments (stratum corneum, epidermis, upper dermis), individual CZ thicknesses and FI in CZ and surrounding skin.ResultsRCM images established skin morphology to a depth of 200 μm. The CZ thickness measurements were feasible to a depth of 50 μm, and remained unchanged over time at 50 μm (P > 0.5). FI were detected to a depth of 160 μm and remained constant in CZ up to four hours after NaF application (15 minutes: 79 AU (73–92 AU), 60 minutes: 72 AU (58–82 AU), four hours: 78 AU (71–90 AU), P > 0.1). In surrounding skin, FI increased significantly over time, but remained lower than FI in CZ (15 minutes: 21 AU (17–22 AU), 60 minutes: 21 AU (19–26 AU), four hours: 42 (31– 48 AU), P = 0.03). AFXL‐processed skin generated higher FI compared to non‐laser processed skin in epidermis and upper dermis at 60 minutes and four hours (P = 0.03).ConclusionsBy LSCM, assessment of the AFXL‐induced CZ thickness was feasible to a depth of 50 μm, and assessment of FI from a small hydrophilic test molecule, NaF in CZ and surrounding skin feasible to a depth of 160 μm. Lasers Surg. Med. 50:70–77, 2018. © 2017 Wiley Periodicals, Inc.
Effects of the Consumption of Milk Biofortified with Selenium, Vitamin E, and Different Fatty Acid Profile on Immune Response in the Elderly
Authors: Pfrimer Karina , Ferriolli Eduardo , Takeuchi Paula Lumy , Salles Márcia SV , Saran‐Netto Arlindo , Zanetti Marcus A , Roma‐Junior Luiz C , Braga Camila Bitu Moreno , Domenici Fernanda A , Valim Yara ML , Paschoalato Adriana BP , Marchi Larissa F , Azzolini Ana ECS , Donadi Eduardo A , Martinez Edson , Vannucchi Helio 
Published: November 2017

ScopeNutrition is a major contributing factor for immunocompetence. The aim was to assess the immune status of older people after consuming milk produced by lactating cows fed with one of the following diets: control diet (C), C + vitamin E + selenium (C + A), C + sunflower oil (C + O), and C + sunflower oil + vitamin E + selenium (A + O).Methods and resultsSixty elderly people received one of these biofortified milks for 12 weeks. Immune response was assessed by measurement of the expression of COX‐1, COX‐2, MCP‐1, PPAR (δ, α, and β/δ) genes, neutrophil production of oxygen reactive species induced by immune complexes, neutrophil phagocytosis and lytic activity of the alternative pathway of the complement system, and cytokine levels. Variables were assessed before and after treatment. Our findings showed stability of some inflammatory mediators (complement activity and neutrophils burst) in treatment groups, except complement activity in C + A, and an increase of these markers in C, especially reactive oxygen species production and phagocytic activity. TNF‐α was significantly increased in all groups. In C + A, IL‐4 and IL‐2 increased after treatment, and in the group that received the milk produced by cows fed with “O” diet, CCL20 and IL‐27 increased.ConclusionOverall, as compared to C, milk biofortification was associated with stabilization of the activity of alternative complement pathway and the neutrophils burst, and modulated different cytokines levels.
Estimating C4 plant consumption in Bronze Age Northeastern Italy through stable carbon and nitrogen isotopes in bone collagen
Authors: Tafuri M.A. , Rottoli M. , Cupitò M. , Pulcini M.L. , Tasca G. , Carrara N. , Bonfanti F. , Salzani L. , Canci A. 
Published: November 2017

AbstractThe application of biomolecular techniques for the study of food practices in the Italian Bronze Age has revealed an interesting complexity. This is particularly true for the Po plain, in northern Italy, where the use of “alternative” grains (i.e., the millets) has been assessed isotopically through the measurement of stable carbon (δ13C) and nitrogen (δ15N) isotope ratios in human and animal bone collagen at the site of Olmo di Nogara (Verona). This work provides new isotopic data from 12 Early, Middle, and Late Bronze Age sites from western Veneto and Friuli. Data obtained contribute to the understanding of mode and tempo of the spread of new crops in northeastern Italy, which appears to be a hotspot for the study of Bronze Age farming economies in Europe. We have successfully analyzed 146 specimens to find that δ13C values are higher, in a way that we interpret as indicative of C4 plant consumption. Four of the sites analyzed, with a specific chronological indication, show this evidence. We explain this phenomenon as the result of a discontinuous spread of new crops in northeastern Italy at a very specific moment of the Bronze Age. The data presented might call for a reconsideration of food production and consumption among Bronze Age groups of southern Europe.
Adaptive‐dynamic‐programming‐based fuzzy control for triangular structure nonlinear uncertain systems with unknown time delay
Authors: Sui Shuai , Tong Shaocheng , Sun Kangkang 
Published: November 2017

SummaryThis paper develops a novel fuzzy adaptive backstepping dynamic surface control scheme for a class of strict‐feedback nonlinear systems with unknown time delay based on adaptive dynamic programming. The whole control scheme is composed of 2 parts, ie, feedforward control and feedback optimal control. Fuzzy logic systems are used to identify nonlinear systems. The control design method, which combined the backstepping design technique and the dynamic surface control approach, is applied to convert triangular structure systems to affine nonlinear systems; it not only can solve the problem of “explosion of complexity” but also can avoid the appearance of unknown terms. The closed‐loop system is guaranteed to be uniformly ultimately bounded based on the Lyapunov and optimal control theory, and the system output can track the desired reference signal in an optimal manner. The simulation results of numerical examples are presented to show the effectiveness of the proposed approach.
Synthesis of NIPU by the carbonation of canola oil using highly efficient 5,10,15‐tris(pentafluorophenyl)corrolato‐manganese(III) complex as novel catalyst
Authors: Malik Manjeet , Kaur Raminder 
Published: November 2017

For the green synthesis of polyurethane (PU), non‐isocyanate routes are worthy alternatives. In the present work, we have explored 5,10,15‐tris(pentafluorophenyl)corrolato‐manganese(III) complex as novel catalyst for coupling reaction between epoxidized canola oil and CO2 (gaseous) to introduce cyclic carbonate moieties in the oil and further used it to obtain non‐isocyanate PU, generally abbreviated as NIPU, by curing with different diamines. The results obtained indicated a 1/4th of the reduction in reaction time with the use of 5,10,15‐tris(pentafluorophenyl)corrolato‐manganese(III) complex as catalyst as compared to the previously reported literature data. As per the reported studies, the corrole metal complex has not been used for this reaction earlier. The structure of products and intermediates were confirmed by using different characterization techniques like 1H NMR and FTIR spectroscopies. The thermal and mechanical behavior of final product was analyzed by TGA and universal testing machine, respectively. The non‐isocyanate PU obtained showed a good thermal stability up to 200°C and a tensile strength of up to 8 MPa. The effect of structure of diamines on the properties of non‐isocyanate PU was also extensively studied.
Continuous vancomycin in a pediatric cystic fibrosis patient
Authors: McKinzie Cameron J. , Esther Charles R. , Vece Timothy J. 
Published: November 2017

AbstractContinuous vancomycin has been previously reported to maximize antimicrobial activity while avoiding toxicities associated with dose escalation, but the efficacy of this dosing strategy has not been reported. This case report describes the successful use of continuous vancomycin, including improvement in lung function and avoidance of nephrotoxicity, demonstrated in a pediatric cystic fibrosis (CF) patient with MRSA.
Equation of state of hexagonal hydroxylapatite (P63) as obtained from density functional theory simulations
Authors: Ulian Gianfranco , Valdrè Giovanni 
Published: November 2017

AbstractHydroxylapatite is an important calcium phosphate phase whose knowledge is useful in different fields, for instance in bone biology, development of biomaterials and even cultural heritage. In this work, the equation of state of this mineral was calculated by using the quasi‐harmonic approximation, also including for the first time the temperature effect. In athermal conditions (0 K), we found that the pressure dependence of the hydroxylapatite unit cell volume is well described by a third‐order Birch–Murnaghan formulation, with parameters K0 = 115.9(1), K' = 4.47(6), and V0 = 524.323(27). The inclusion of temperature led to a lower bulk modulus, for example, KT0 = 109.55 GPa at 300 K. The thermal expansion coefficient between 0 and 1000 K was also reported. The results are in good agreement with the few available experimental data reported in literature and further extend the knowledge of the mechanical and thermal behavior of this important mineral.
Dye degradation studies of Mo‐doped TiO2 thin films developed by reactive sputtering
Authors: Sreedhar M. , Brijitta J. , Reddy I. Neelakanta , Cho Migyung , Shim Jaesool , Bera Parthasarathi , Joshi Bhavana N. , Yoon Sam S. 
Published: November 2017

TiO2 thin films with various Mo concentrations have been deposited on glass and n‐type silicon (100) substrates by this radio‐frequency (RF) reactive magnetron sputtering at 400°C substrate temperature. The crystal structure, surface morphology, composition, and elemental oxidation states of the films have been analyzed by using X‐ray diffraction, field emission scanning electron microscopy, atomic force microscopy, and X‐ray photoelectron spectroscopy, respectively. Ultraviolet‐visible spectroscopy has been used to investigate the degradation, transmittance, and absorption properties of doped and undoped TiO2 films. The photocatalytic degradation activity of the films was evaluated by using methylene blue under a light intensity of 100 mW cm−2. The X‐ray diffraction patterns show the presence of anatase phase of TiO2 in the developed films. X‐ray photoelectron spectroscopy studies have confirmed that Mo is present only as Mo6+ ions in all films. The Mo/TiO2 band gap decreases from ~3.3 to 3.1 eV with increasing Mo dopant concentrations. Dye degradation of ~60% is observed in Mo/TiO2 samples, which is much higher than that of pure TiO2.
Ultrathin films of Ge on the Si(100)2 × 1 surface
Authors: Kamaratos M. , Sotiropoulos A.K. , Vlachos D. 
Published: November 2017

The Ge/Si(100)2 × 1 interface was investigated by means of Auger electron spectroscopy, low‐energy electron diffraction, thermal desorption spectroscopy, and work function measurements, in the regime of a few monolayers. The results show that growth of Ge at room temperature forms a thermally stable amorphous interface without significant intermixing and interdiffusion into the substrate, for annealing up to ~1100 K. Therefore, the Ge‐Si interaction most likely takes place at the outmost silicon atomic plane. The charge transfer between Ge and Si seems to be negligible, indicating a rather covalent bonding. Regarding the Ge overlayer morphology, the growth mode depends on the substrate temperature during deposition, in accordance with the literature. Stronger annealing of the germanium covered substrate (>1100 K) causes desorption of not only Ge adatoms, but also SiGe and Ge2 species. This is probably due to a thermal Ge‐Si interdiffusion. In that case, deeper silicon planes participate in the Ge‐Si interaction. Above 1200 K, a new Ge superstructure (4 × 4)R45o was observed. Based on that symmetry, an atomic model is proposed, where Ge adatom pairs interact with free silicon dangling bonds.
Norcantharidin induce apoptosis in human nasopharyngeal carcinoma through caspase and mitochondrial pathway
Authors: Chen Andy Wei‐Ge , Tseng Yen‐Shuo , Lin Chia‐Chieh , Hsi Yi‐Ting , Lo Yu‐Sheng , Chuang Yi‐Ching , Lin Shu‐Hui , Yu Chia‐Yun , Hsieh Ming‐Ju , Chen Mu‐Kuan 
Published: November 2017

AbstractWhile Nasopharyngeal carcinoma (NPC) is uncommon in western countries, it is endemic in Southeast Asia and Southern China. Previous study of norcantharidin (NCTD), isolated from blister beetles, has proved its anticancer effect on various tumors. However, the effect of NCTD in NPC has never been studied. The purpose of this study is to inspect the suppression activity of NCTD on NPC, along with the underlying mechanism. NPC cell line NPC‐BM was treated with NCTD. NCTD remarkably inhibited proliferation and induce apoptosis in NPC‐BM cell. Activation of caspase‐3, −8, −9 was observed through western blotting. The expression of antiapoptotic protein Bcl‐XL was significantly reduced, but expression of proapoptotic protein Bak was increased after treatment of NCTD. The cytotoxic effect of NCTD on NPC‐BM cell is mainly due to apoptosis, mediated by caspase and mitochondrial pathway. These results suggested that NCTD could be a potential anticancer agent for NPC.
Viral internal ribosomal entry sites: four classes for one goal
Authors: Mailliot Justine , Martin Franck 
Published: November 2017

To ensure efficient propagation, viruses need to rapidly produce viral proteins after cell entrance. Since viral genomes do not encode any components of the protein biosynthesis machinery, viral proteins must be produced by the host cell. To hi‐jack the host cellular translation, viruses use a great variety of distinct strategies. Many single‐stranded positive‐sensed RNA viruses contain so‐called internal ribosome entry sites (IRESs). IRESs are structural RNA motifs that have evolved to specific folds that recruit the host ribosomes on the viral coding sequences in order to synthesize viral proteins. In host canonical translation, recruitment of the translation machinery components is essentially guided by the 5′ cap (m7G) of mRNA. In contrast, IRESs are able to promote efficient ribosome assembly internally and in cap‐independent manner. IRESs have been categorized into four classes, based on their length, nucleotide sequence, secondary and tertiary structures, as well as their mode of action. Classes I and II require the assistance of cellular auxiliary factors, the eukaryotic intiation factors (eIF), for efficient ribosome assembly. Class III IRESs require only a subset of eIFs whereas Class IV, which are the more compact, can promote translation without any eIFs. Extensive functional and structural investigations of IRESs over the past decades have allowed a better understanding of their mode of action for viral translation. Because viral translation has a pivotal role in the infectious program, IRESs are therefore attractive targets for therapeutic purposes. WIREs RNA 2018, 9:e1458. doi: 10.1002/wrna.1458This article is categorized under:

Translation > Ribosome Structure/Function
Translation > Translation Mechanisms
RNA Interactions with Proteins and Other Molecules > RNA–Protein Complexes
Arteriovenous Fistula Maturation Failure in a Large Cohort of Hemodialysis Patients in the Netherlands
Authors: Voorzaat Bram M. , van der Bogt Koen E. A. , Janmaat Cynthia J. , van Schaik Jan , Dekker Friedo W. , Rotmans Joris I. ,   Dutch Vascular Access Study Group, Voorzaat Bram M. , van der Bogt Koen E. A. , Janmaat Cynthia J. , van Schaik Jan , Dekker Friedo W. , Rotmans Joris I. , Vogt Liffert , Huisman Laurens , Gabreëls Bas A Th. F. , Boereboom Frans T. J. , van der Meer Irene M. , van Eps Randolph G. S. , Eefting Daniël , Weijmer Marcel C. , van Nieuwenhuizen Roos C. , Abrahams Alferso , Toorop Raechel J. 
Published: November 2017

AbstractObjectivesRadiocephalic arteriovenous fistulas (RCAVF) are the preferred vascular access (VA) for hemodialysis (HD). Cohort studies from North America revealed that nonmaturation is a significant disadvantage of RCAVFs compared to other VAs. DESIGN: This present retrospective study describes the incidence of nonmaturation of AVFs and functional failure of arteriovenous grafts (AVG) in a multicentre cohort in the Netherlands and attempts to create a prediction model for nonmaturation of RCAVFs. Furthermore, the efficacy of interventions to promote maturation as well as the variability between hemodialysis centers was evaluated.MaterialsMedical records from 8 hospitals from 1997 to 2016 were retrospectively evaluated for VA type, maturation/primary success and demographics and comorbidities.MethodsA prediction model was created for RCAVF nonmaturation using multivariate logistic regression analysis, selecting significant predictors using backward selection. Discrimination and calibration of the model were assessed.Results1383 AVFs and 273 AVGs were included in 1221 patients. Overall nonmaturation was 24% for RCAVFs, and 11% for upper arm AVFs. The functional failure rate for AVGs was 6%. The nonmaturation rate of contralateral RCAVFs after failure of an RCAVF was 22%. Procedures to improve RCAVF maturation were successful in 98/142 cases (69%). Predictors for nonmaturation were female gender, peripheral vascular disease, cerebrovascular disease and a cephalic vein diameter <2.5 mm, but the prediction model lacked sensitivity and specificity predicting individual RCAVF nonmaturation (C‐statistic 0.629).ConclusionNonmaturation rates are highest for RCAVFs, but nonmaturation could not be predicted with demographic parameters.
Developing the behavioural constellation of deprivation: Relationships, emotions, and not quite being in the present
Authors: Białek Arkadiusz , Reddy Vasudevi 
Published: November 2017

AbstractAlthough it is a welcome and timely idea, the behavioural constellation of deprivation (BCD) needs to explain how the development of personal control, trust, and perception of future risk is mediated through relationships with parents. Further, prioritising the present over the future may not be the essence of this constellation; perhapsnotquite being, either in the presentorin the future, is a better depiction.