bluuebunny/crossref_metadata_2025_split huggingface dataset:
Price fairness, satisfaction, and trust as antecedents of purchase intentions towards organic food
Authors: Konuk Faruk Anıl 
Published: November 2017

AbstractHealth and environmental issues are increasingly important in consumers' decision‐making process. Accordingly, demand for organic food is rapidly growing. In this context, the objective of this study is to analyze the relationship between price fairness, satisfaction, trust, and purchase intentions towards organic food. With this aim, empirical data were collected with self‐administrated questionnaires from a convenience sample of consumers from Sakarya, Turkey. Proposed hypotheses were tested with structural equations modeling. The results indicated positive relationships between price fairness, satisfaction, trust, and purchase intentions. At the end of this study, theoretical contributions, managerial implications, limitations, and suggestions for future research are discussed.
Coordinating Activation Strategy‐Induced Selective C−H Trifluoromethylation of Anilines
Authors: Xu Jun , Cheng Ke , Shen Chao , Bai Renren , Xie Yuanyuan , Zhang Pengfei 
Published: November 2017

AbstractA simple protocol for the synthesis of 2‐(trifluoromethyl)aniline derivatives through a coordinating activation strategy was developed. The reaction showed good reactivity and gave the target products in moderate to good yields. Pleasingly, the directing group could be recovered in excellent yield. Furthermore, this strategy allowed efficient access to the synthesis of floctafenine. A single‐electron‐transfer mechanism was proposed to be responsible for this trifluoromethylation reaction.
Surface‐Binding Peptide Facilitates Electricity‐Driven NADPH‐Free Cytochrome P450 Catalysis
Authors: Zernia Sarah , Frank Ronny , Weiße Renato H.‐J. , Jahnke Heinz‐Georg , Bellmann‐Sickert Kathrin , Prager Andrea , Abel Bernd , Sträter Norbert , Robitzki Andrea , Beck‐Sickinger Annette G. 
Published: November 2017

AbstractIndustrial biotechnology aims to exploit cytochrome P450 enzymes to access their sophisticated catalytic activity for challenging chemical reactions on inert C−H bonds. Limited by the need for NADPH, approaches to bind P450 enzymes to electrode surfaces for an artificial electron supply are promising. Here, we demonstrate that a recombinant fusion of an indium tin oxide binding peptide and the multi‐domain class VIII cytochrome P450 BM3 can be used in electrically driven catalysis. Bioelectrocatalytic activity is analyzed by direct product quantification resulting in superior activity of the specifically immobilized P450 BM3 in contrast to unspecifically adsorbed enzyme. Spacer and anchor point studies imply that enzyme flexibility and alignment are crucial factors to achieve high activity on the electrode. Furthermore, we demonstrate that our approach is also feasible for pharmaceutical application using naringenin as substrate.
On the Dual Reactivity of a Nucleophilic Dihydrido‐Diborane: Reaction at the B−B Bond and/or the B−H Bond
Authors: Widera Anna , Kaifer Elisabeth , Wadepohl Hubert , Himmel Hans‐Jörg 
Published: November 2017

AbstractThe electron‐rich, double‐base stabilized dihydrido‐diborane(4) [HB(hpp)]2 (hpp=1,3,4,6,7,8‐hexahydro‐2H‐pyrimido[1,2‐a]pyrimidinate) combines two different, easily accessible reactive sites: the B−B and B−H bond. Herein, we report two basically similar reactions of [HB(hpp)]2 with catecholborane and B‐chlorocatecholborane unsuspectedly resulting in two different reactivities. While reaction of the diborane with two equivalents of HB(cat) proceeded with formation of a cationic triborane with a (3c2e) bond, [{HB(μ‐hpp)}2(μ‐BH2)]+, reaction with ClB(cat) led to hydride–chloride substitution yielding [ClB(hpp)]2. The cationic triborane was also obtained by the addition of BH3 to the in situ generated [HB(hpp)2B]+. Proceeding from the new compound [ClB(hpp)]2, we investigated its reactivity towards chloride abstraction with AlCl3 and GaCl3. Irrespectively of the salt chosen, the reaction led to formation of a radical tricationic tetraborane [{B(hpp)}4].3+ with a (4c,5e) bond. Moreover, the dichloro‐diborane proves as a versatile reagent for further substitution cleanly reacting with the strong nucleophile nBuLi to a new dibutyl‐diborane [nBuB(hpp)]2.
Direct Contact Latent Heat Storage for Efficiency Enhancement of Heat Pumps
Authors: Kunkel Sven , Kübel‐Heising Felix , Dörnhofer Patrick , Medina Isabel , Weis Jürgen , Stabler Rainer , Repke Jens‐Uwe , Rädle Matthias 
Published: November 2017

AbstractMit einem neuen Konzept zur Speicherung thermischer Energie auf niedrigem und konstantem Temperaturniveau soll solarthermische Energie auch in der Übergangs‐ und Winterzeit effektiv genutzt und zur Steigerung des Wirkungsgrades von Wärmepumpen gespeichert werden. Es wird ein Latentwärmespeicher auf Basis von Salzhydraten vorgestellt, wobei das Salzhydrat einen Schmelzpunkt von 15 °C aufweist und durch Direktkontakt mit einem nicht mischbaren Wärmeträgeröl eine hohe Be‐ und Entladeleistung bei geringer Grädigkeit aufweist. Erste experimentelle Ergebnisse und Anwendungsbeispiele werden diskutiert.
Elimination profile of triamcinolone in urine following oral administration
Authors: Chen Ting‐Ting , Tseng Yi‐Chun , Huang Tai‐Yuan , Chang‐Chien Guo‐Ping , Hsu Mei‐Chich 
Published: November 2017

AbstractTriamcinolone (T) is a glucocorticoid commonly used to relieve inflammation and treat arthritis, severe allergies, and asthma; however, it is banned by the World Anti‐Doping Agency in competition for athletes when administered orally, intravenously, intramuscularly, or rectally. The minimum required performance limit (MRPL) for urinary T is 30 ng/mL. However, the data about the urinary excretion of T after oral administration is limited. We investigate the elimination profile and determine whether single‐dose administration of T would cause a positive doping result. Twelve healthy volunteers received a single‐dose of 4‐mg T rally, and urine samples were collected for 24 hours. A validated liquid chromatography–tandem mass spectrometry method was used to determine urinary T levels. Non‐compartmental modeling was used to estimate the pharmacokinetic parameters. All the urinary T concentrations were much higher than the MRPL. The peak urinary T concentration was 3211.4 ± 860.3 ng/mL (mean ± SD), time to peak concentration was 1.7 ± 0.9 hours, and the estimated elimination half‐life was 4.4 ± 2.8 hours. About 27.76% of the consumed dose was eliminated via urine within 24 hours of intake. After a single‐dose oral administration, urinary T concentrations still exceeded the MRPL after 24 hours. This information could be useful for limiting the misuse of T. Athletes should be aware when using T in competition and acquire approval for a therapeutic use exemption prior to use. Moreover, the elimination profile of orally administered T may be crucial information for distinguishing different dosage routes.
Investigation of Maximum Junction Temperature for 4H‐SiC MOSFET During Unclamped Inductive Switching Test
Authors: AN JUNJIE , NAMAI MASAKI , OKAMOTO DAI , YANO HIROSHI , TADANO HIROSHI , IWAMURO NORIYUKI 
Published: November 2017

SUMMARYNormally, thermal breakdown is one of the serious failure phenomena in the power device application, which drives the researchers to focus on exploration of the failure mechanism and the new evaluation method for power device. In this paper, unclamped inductive switching test is presented to evaluate energy handing ability and maximum junction temperature of 1200 V/19 A SiC MOSFET during avalanche mode. It is verified that commercial 1200 V/19 A SiC MOSFET can easily withstand almost 10 μs avalanche time and around 924 K maximum junction temperature with 1 mH inductance and 400 V dc bus at the case temperature of 300 K in avalanche mode. In addition, three reasonable evaluation methods of the maximum junction temperature for SiC MOSFET are summarized at different case temperatures.
Scaling Law of Coupling Coefficient and Coil Size in Wireless Power Transfer Design via Magnetic Coupling
Authors: NAGAI CHIAKI , INUKAI KENJI , KOBAYASHI MASATO , TANAKA TATSUYA , ABUMI KENSHO , IMURA TAKEHIRO , HORI YOICHI 
Published: November 2017

SUMMARYWireless Power Transfer (WPT), such as magnetic resonant coupling using a magnetic field, is being studied and discussed for a wide variety of applications. When the transmission distances are large, very large transmitters and receivers need to be considered. However, in the early stages of an investigation, it might be prohibitive to manufacture and evaluate coils of such a large size. To reduce costs and effort, a scaling law can be used to estimate the WPT efficiency of very large coils using the results of smaller coils. In this paper, a scaling law is proposed that relates the coil size to the coupling coefficient, assuming the ratio between the coil diameter and coil length remains constant. The coupling coefficient is one of the parameters that determine the maximum efficiency of magnetic field WPT. The proposed method was verified by an electromagnetic field simulator and experiment. The results of this study provide an easy method for estimating the WPT efficiency of very large coils.
Converter Using SiC‐MOSFET for Ultra‐High‐Speed Elevator
Authors: KATOH KAORU , MORI KAZUHISA , MATSUMOTO YOHEI , YABUUCHI TATSUSHI , OHNUMA NAOTO 
Published: November 2017

SUMMARYIn this study, we developed a converter based on SiC (Silicon Carbide)‐MOSFET for use in ultra‐high‐speed elevators, with a reduced volume of 15% compared with the conventional converter. We succeeded in reducing the power loss of the converter unit by 56% compared to the conventional converter in one round trip under high temperature condition. Recently, because of their useful characteristics, wide‐gap semiconductors, such as SiC and GaN, have gained considerable attention for use in various applications in the power electronics systems. Therefore, we studied the use of a converter in elevator systems based on SiC‐MOSFET. We used a 1200 V/800 A SiC‐MOSFET module for the converter unit. We developed a prototype of the converter unit and the control panel by applying for the SiC‐MOSFET module for an ultra‐high‐speed elevator. As a result, the setting area of the control panel (main part) becomes less than 43% of the conventional panel. We tried to demonstrate the working of a 68‐kW elevator by applying the prototype control panel. Because of the characteristic of the switching loss of SiC‐MOSFET, the power loss of the converter unit has almost no dependence on temperature. An energy‐saving effect of approximately 17% was achieved in the total elevator system in one round trip under high‐temperature condition.
Charge and Discharge Control to Save Regeneration Energy for Overhead Line and Energy Storage Device Hybrid Power Source Three‐Level Inverter
Authors: ASANO YUKO , OHNO YOSHIKI , KURITA SOICHIRO , KONDO KEIICHIRO , SHINOMIYA TAKESHI , ISHIKAWA KATSUMI 
Published: November 2017

SUMMARYHybrid power source three‐level inverter is proposed as a main circuit system with energy storage device for increasing regenerative power. This paper proposes a charge and discharge control method to utilize the regenerated energy. The proposed method is verified by experimental tests with a scaled‐down model and numerical simulation.
Study on Improving Precision of Analysis of Boost Ratio and Power Efficiency of Tapped‐Inductor DC–DC Converter Circuit
Authors: LIU YUHAN , SEKIGUCHI RYO , SANO YUJI 
Published: November 2017

SUMMARYAnalysis precision of boost ratio and power efficiency in boost DC–DC converter circuit is improved by proposing adaptive equivalent circuit of output diode of the circuit. In experiment, boost ratio and power efficiency in high boost ratio circuit were 9.89% and 76.5% respectively with its load resistance of 20 Ω driven by output voltage 10 V. In experimental results, error in theoretical values of boost ratio compared with the measured values of that was reduced to −3.79% from 57.5% in the conventional circuit. In a tapped‐inductor high boost ratio circuit, error in theoretical values of boost ratio was reduced to 3.54% from 31.8%. Error in theoretical values of power efficiency with the measured values of that was reduced to 5.51% from 33.2% in the conventional circuit. In a high boost ratio circuit, error in theoretical values of power efficiency was reduced to −3.32% from 17.3%. Power loss of every element in boost DC–DC converter circuits was analyzed with high precision by analysis of inductance current waveforms in those circuits. Error in theoretical values of power loss compared with measured values was reduced to equal or less than 5%.
Engineering Electronic Band Structure of Indium‐doped Cd1−xMgxO Alloys for Solar Power Conversion Applications
Authors: Lee Yeonbae , Liu Chao Ping , Yu Kin Man , Walukiewicz Wladek 
Published: November 2017

AbstractCdO‐based transparent conducting oxide thin films have great potential applications in many optoelectronic devices because of their high mobility, low resistivity, and high transparency over a wide spectral range. However, because of the low band gap of only 2.2 eV, the transparency of this material is limited in the UV spectral range. Alloying of undoped CdO with a larger band gap material such as MgO increases the band gap but tends to degrade electrical conductivity. Recently, it has been demonstrated that In doping of CdO greatly improves the electrical characteristic of this material by increasing both the carrier density and the mobility. In this work, we present a comprehensive study on CdMgO alloys doped with up to 4 % In. We show that the doping with In extends the composition range of conducting films with a composition of up to 40 % of Mg and a band gap of 3.5 eV. Our results could open up a new pathway to transparent conducive oxides that could be used as low‐resistivity contacts and UV‐transparent electron emitter windows in thin‐film photovoltaic technologies.
Ordered Iron‐ and Nitrogen‐Doped Carbon Framework as a Carbon Monoxide‐Tolerant Alkaline Anion‐Exchange Membrane Fuel Cell Catalyst
Authors: Chen Lei , Xing Yijing , Cai Shichang , Wang Rui , Li Shang , Li Junsheng , Guo Wei , Tang Haolin 
Published: November 2017

AbstractIn this work, we have successfully developed a series of ordered Fe‐ and N‐doped carbon (Fe‐N‐C) catalysts for alkaline anion‐exchange membrane fuel cells (AEMFCs) using ordered SiO2 nanospheres as a scaffold template. Compared to the previous work, the SiO2 nanosphere templates used in this work are more well‐ordered and size‐controlled, which increases the surface area of the Fe‐N‐C framework material. We observed that the 30 nm@Fe‐N‐C sample exhibits orderly arranged mesopores, interconnected conductive networks, and large surface area (1192 m2 g−1). Moreover, the 30 nm@Fe‐N‐C sample shows significantly enhanced oxygen reduction reaction (ORR) activity compared to commercial Pt/C. A more‐positive half‐wave potential of 0.84 V (vs. reversible hydrogen electrode, RHE) and remarkably stable limiting current of ≈6.1 mA cm−2 is demonstrated by a three‐electrode configuration rotating disk electrode (RDE) system in 0.1 m KOH solution. An AEMFC based on the 30 nm@Fe‐N‐C sample showed a maximum power density of 100 mW m−2 at a high current density of 230 mA cm−2. In addition, we found the AEMFC based on 30 nm@Fe‐N‐C catalyst could steadily operate for more than 60 h with only 4.65 % performance degradation under constant voltage conditions (0.6 V). More interestingly, this catalyst shows an excellent tolerance for CO as well as remarkably long‐term stability with more than 89.9 % retention of its initial activity after 41.6 min operation, which is obviously superior to the commercial Pt/C catalyst (59 % initial activity retention).
Single‐item measure for assessing quality of life in children with drug‐resistant epilepsy
Authors: Conway Lauryn , Widjaja Elysa , Smith Mary Lou 
Published: November 2017

SummaryObjectiveThe current study investigated the psychometric properties of a single‐item quality of life (QOL) measure, the Global Quality of Life in Childhood Epilepsy question (G‐QOLCE), in children with drug‐resistant epilepsy.MethodData came from the Impact of Pediatric Epilepsy Surgery on Health‐Related Quality of Life Study (PESQOL), a multicenter prospective cohort study (n = 118) with observations collected at baseline and at 6 months of follow‐up on children aged 4–18 years. QOL was measured with the QOLCE‐76 and KIDSCREEN‐27. The G‐QOLCE was an overall QOL question derived from the QOLCE‐76. Construct validity and reliability were assessed with Spearman's correlation and intraclass correlation coefficient (ICC). Responsiveness was examined through distribution‐based and anchor‐based methods.ResultsThe G‐QOLCE showed moderate (r ≥ 0.30) to strong (r ≥ 0.50) correlations with composite scores, and most subscales of the QOLCE‐76 and KIDSCREEN‐27 at baseline and 6‐month follow‐up. The G‐QOLCE had moderate test‐retest reliability (ICC range: 0.49–0.72) and was able to detect clinically important change in patients' QOL (standardized response mean: 0.38; probability of change: 0.65; Guyatt's responsiveness statistics: 0.62 and 0.78). Caregiver anxiety and family functioning contributed most strongly to G‐QOLCE scores over time.SignificanceResults offer promising preliminary evidence regarding the validity, reliability, and responsiveness of the proposed single‐item QOL measure. The G‐QOLCE is a potentially useful tool that can be feasibly administered in a busy clinical setting to evaluate clinical status and impact of treatment outcomes in pediatric epilepsy.
Sensory evaluation of biscuits enriched with artichoke fiber‐rich powders (Cynara scolymus L.)
Authors: San José Francisco J. , Collado‐Fernández Montserrat , López Rafael 
Published: November 2017

AbstractThe artichoke by‐products from the canning industry are mainly used for silage, being minimally revaluated. The ways of extraction of by‐products of artichoke into fiber‐rich powders modify their industrial applications in biscuits, as the sensory evaluation may change compared with the reference fiber (Pea fiber, P) used with commercial biscuit. In this sensory study biscuits enriched with fiber‐rich powders of artichoke (W, Ca) are compared with biscuits with the same percentage of the reference fiber (P) and control biscuits without fiber (B). For most of the sensory attributes of the biscuits enriched with artichoke fiber‐rich powders were perceived similar to the biscuits with the commercial reference fiber (P). The good sensory behavior of the biscuits with artichoke fiber‐rich powders during two storage conditions applied may confirm that the artichoke by‐products would be a suitable substitute for pea fiber in oven‐baked products, like wholemeal biscuits with high‐fiber content.
Microwave‐assisted extraction and ultrasound‐assisted extraction for recovering carotenoids from Gac peel and their effects on antioxidant capacity of the extracts
Authors: Chuyen Hoang V. , Nguyen Minh H. , Roach Paul D. , Golding John B. , Parks Sophie E. 
Published: November 2017

AbstractThe peel of Gac fruit (Momordica cochinchinensis Spreng.) contains high levels of bioactive compounds, especially carotenoids which possess significant antioxidant capacities. However, the peel of Gac is regarded as a waste from the production of carotenoid‐rich oil from Gac fruit. In this study, carotenoids of Gac peel were extracted by microwave‐assisted extraction (MAE) and ultrasound‐assisted extraction (UAE) using ethyl acetate as extraction solvent. The effect of extraction time and different levels of microwave and ultrasonic powers on the yield of total carotenoid and antioxidant capacity of the extracts were investigated. The results showed that an extraction at 120 W for 25 min and an extraction at 200 W for 80 min were the most effective for MAE and UAE of the Gac peel samples, respectively. The maximum carotenoid and antioxidant capacity yields of UAE were significantly higher than those of the MAE. The antioxidant capacity of extract obtained by the UAE was also significantly higher that of the conventional extraction using the same ratio of solvent to material. The results showed that both MAE and UAE could be used to reduce the extraction time significantly in comparison with conventional extraction of Gac peel while still obtained good extraction efficiencies. Thus, MAE and UAE are recommended for the improvement of carotenoid and antioxidant capacity extraction from Gac peel.
Effects of 3 months continuous intake of supplement containing Pantoea agglomerans LPS to maintain normal bloodstream in adults: Parallel double‐blind randomized controlled study
Authors: Nakata Yoko , Kohchi Chie , Ogawa Kazue , Nakamoto Takeru , Yoshimura Hiroshi , Soma Gen‐ichiro 
Published: November 2017

AbstractIn this study, the effects on the maintenance of normal bloodstream by lipopolysaccharide (LPS) were investigated in the parallel‐group randomized double‐blind study using supplement containing Pantoea agglomerans LPS (201.5 μg/tablet as LPS). Screening was previously performed in the implementation of the study. Adult males and females with normal value to borderline (healthy subjects) in the hematologic parameters, for which reference values were given, were chosen in this study. The period of ingestion of the supplement was 3 months. As the result, a significant decrease in the rate of change (the ratio when the baseline was 1) of HbA1c, which is a glycative stress marker, was found in the group which ingested LPS supplement after 3 months. Also, a significant increase in the number of fingertip capillary vessels was found compared with the control group. From these results, the effects of the maintenance of bloodstream by ingestion of LPS were shown.
Small amounts of ethanol attenuate folic acid stability in acidic beverages during storage
Authors: Kida Kaori , Tomotake Muneaki , Sasako Hiroshi , Matsuda Yoshihito , Sasaki Naomi , Yamamoto Norio 
Published: November 2017

AbstractFolic acid (FA) is an essential compound involved in important biochemical processes and is used to fortify various food products. FA in fortified acidic beverages decomposes during storage due to H+ attack. FA stability in acidic beverages is a serious problem as food fortification should guarantee labeled FA concentrations until the expiry date. In this study, we investigated the influence of ethanol (EtOH) on FA depletion using a model acidic beverage and observed that small amounts of EtOH, derived from added flavor, promoted FA depletion. FA depletion was promoted by only small amounts of EtOH, but not by acetonitrile. This suggested that FA decomposition might be accelerated by EtOH, which surrounds FA molecules in solution due to selective solvation. In the development of FA‐fortified beverages, EtOH content should be decreased or removed altogether, to prevent accelerating FA decomposition.