bluuebunny/crossref_metadata_2025_split huggingface dataset:
An improved model predictive control of low voltage ride through in a permanent magnet synchronous generator in wind turbine systems
Authors: Babaghorbani Behnaz , Hamidi Beheshti Mohammad Taghi , Talebi Heidar Ali 
Published: July 2019

AbstractThis research investigates a wind energy conversion system based on a permanent magnet synchronous generator (PMSG). In addition, a model predictive control (MPC) is proposed for the PMSG in normal and fault conditions. The most efficient mode of the control algorithm is found for maximum power point tracking in normal conditions and fast dynamic response in fault conditions following the selection of the optimum voltage vector. This method prevents a sudden increase in the DC‐link voltage by storing the active power in the generator rotor inertia. Moreover, during the low voltage, the grid code adoption of the reactive current is injected into the grid side. The performance of the proposed control scheme is evaluated for a wind power generator using MATLAB software. The simulation results demonstrate that the proposed method can safeguard the DC‐link during the fault.
An algorithm to solve a quantile optimization problem with loss function having a separable structure, and its application to an aerospace problem
Authors: Ivanov S.V. , Kibzun A.I. , Stepanova A.S. 
Published: July 2019

AbstractA quantile minimization problem with loss function having separable structure is considered. The distribution of the random parameters is assumed to be normal. To solve the problem, the confidence method and the sample average approximation method are used. Thus, the problem is reduced to a combinatorial one, which is solved by using the variable neighborhood search. The suggested algorithm is applied to optimization of runway area. Parameters of the runway are selected to minimize the area taking into account random wind speed.
Effect of neoadjuvant chemoradiation on preoperative pulmonary physiology, postoperative respiratory complications and quality of life in patients with oesophageal cancer
Authors: Elliott J A , O'Byrne L , Foley G , Murphy C F , Doyle S L , King S , Guinan E M , Ravi N , Reynolds J V 
Published: July 2019

Abstract

Background
It remains controversial whether neoadjuvant chemoradiation (nCRT) for oesophageal cancer influences operative morbidity, in particular pulmonary, and quality of life. This study combined clinical outcome data with systematic evaluation of pulmonary physiology to determine the impact of nCRT on pulmonary physiology and clinical outcomes in locally advanced oesophageal cancer.

Methods
Consecutive patients treated between 2010 and 2016 were included. Three-dimensional conformal radiation was standard, with a lung dose–volume histogram of V20 less than 25 per cent, and total radiation between 40 and 41·4 Gy. Forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and diffusion capacity for carbon monoxide (DLCO) were assessed at baseline and 1 month after nCRT. Radiation-induced lung injury (grade 2 or greater), comprehensive complications index (CCI) and pulmonary complications were monitored prospectively. Health-related quality of life was assessed among disease-free patients in survivorship.

Results
Some 228 patients were studied. Comparing pulmonary physiology values before with those after nCRT, FEV1 decreased from mean(s.d.) 96·8(17·7) to 91·5(20·4) per cent (–3·6(10·6) per cent; P &lt; 0·001), FVC from 104·9(15·6) to 98·1(19·8) per cent (–3·2(11·9) per cent; P = 0·005) and DLCO from 97·6(20·7) to 82·2(20·4) per cent (–14·8(14·0) per cent; P &lt; 0·001). Five patients (2·2 per cent) developed radiation-induced lung injury precluding surgical resection. Smoking (P = 0·005) and increased age (P &lt; 0·001) independently predicted percentage change in DLCO. Carboplatin and paclitaxel with 41·4 Gy resulted in a greater DLCO decline than cisplatin and 5-fluorouracil with 40 Gy (P = 0·001). On multivariable analysis, post-treatment DLCO predicted CCI (P = 0·006), respiratory failure (P = 0·020) and reduced physical function in survivorship (P = 0·047).

Conclusion
These data indicate that modern nCRT alters pulmonary physiology, in particular diffusion capacity, which is linked to short- and longer-term clinical consequences, highlighting a potentially modifiable index of risk.
Risk of newly detected infections and cervical abnormalities in adult women seropositive or seronegative for naturally acquired HPV‐16/18 antibodies
Authors: Rosillon Dominique , Baril Laurence , Del Rosario‐Raymundo Maria Rowena , Wheeler Cosette Marie , Skinner Susan Rachel , Garland Suzanne Marie , Salmeron Jorge , Lazcano‐Ponce Eduardo , Vallejos Carlos Santiago , Stoney Tanya , ter Harmsel Bram , Lim Timothy Yong Kuei , Quek Swee Chong , Minkina Galina , McNeil Shelly Ann , Bouchard Celine , Fong Kah Leng , Money Deborah , Ilancheran Arunachalam , Savicheva Alevtina , Cruickshank Margaret , Chatterjee Archana , Fiander Alison , Martens Mark , Bozonnat Marie Cecile , Struyf Frank , Dubin Gary , Castellsagué Xavier 
Published: July 2019

AbstractBackgroundInfections with human papillomavirus (HPV) types 16 and 18 account for ~70% of invasive cervical cancers but the degree of protection from naturally acquired anti‐HPV antibodies is uncertain. We examined the risk of HPV infections as defined by HPV DNA detection and cervical abnormalities among women >25 years in the Human Papilloma VIrus Vaccine Immunogenicity ANd Efficacy trial's (VIVIANE, NCT00294047) control arm.MethodsSerum anti‐HPV‐16/18 antibodies were determined at baseline and every 12 months in baseline DNA‐negative women (N = 2687 for HPV‐16 and 2705 for HPV‐18) by enzyme‐linked immunosorbent assay (ELISA) from blood samples. HPV infections were identified by polymerase chain reaction (PCR) every 6‐months, and cervical abnormalities were confirmed by cytology every 12 months. Data were collected over a 7‐year period. The association between the risk of type‐specific infection and cervical abnormalities and serostatus was assessed using Cox proportional hazard models.ResultsRisk of newly detected HPV‐16‐associated 6‐month persistent infections (PI) (hazard ratio [HR] = 0.56 [95%CI:0.32; 0.99]) and atypical squamous cells of undetermined significance (ASC‐US+) (HR = 0.28 [0.12; 0.67]) were significantly lower in baseline seropositive vs baseline seronegative women. HPV‐16‐associated incident infections (HR = 0.81 [0.56; 1.16]) and 12‐month PI (HR = 0.53 [0.24; 1.16]) showed the same trend. A similar trend of lower risk was observed in HPV‐18‐seropositive vs ‐seronegative women (HR = 0.95 [0.59; 1.51] for IIs, HR = 0.43 [0.16; 1.13] for 6‐month PIs, HR = 0.31 [0.07; 1.36] for 12‐month PIs, and HR = 0.61 [0.23; 1.61] for ASC‐US+).ConclusionsNaturally acquired anti‐HPV‐16 antibodies were associated with a decreased risk of subsequent infection and cervical abnormalities in women >25 years. This possible protection was lower than that previously reported in 15‐ to 25‐year‐old women.
Developing a prediction model for disease‐free survival from upper urinary tract urothelial carcinoma in the Korean population
Authors: Kim Sung Han , Song Mi Kyung , Hong Bumsik , Kang Seok Ho , Jeong Byong Chang , Ku Ja Hyun , Seo Ho Kyung ,   Urothelial Cancer‐Advanced Research, Treatment (UCART) study group
Published: July 2019

AbstractBackgroundIn this study, we aimed to propose a validated prediction model for disease‐free survival (DFS) after radical nephroureterectomy (RNU) in a Korean population with upper urinary tract urothelial carcinoma (UTUC).MethodsWe performed a retrospective review of 1561 cases of UTUC who underwent either open RNU (ONU, n = 906) or laparoscopic RNU (LNU, n = 615) from five tertiary Korean institutions between January 2000 and December 2012. Data were used to develop a prediction model using the Cox proportional hazards model. Prognostic factors were selected using the backward variable selection method. The prediction model performance was investigated using Harrell's concordance index (C‐index) and Hosmer‐Lemeshow type 2 statistics. Internal validation was performed using a bootstrap approach, and the National Cancer Center data set (n = 128) was used for external validation.ResultsA best‐fitting prediction model with seven significant factors was developed. The C‐index and two Hosmer‐Lemeshow type statistics of the prediction model were 0.785 (95% CI, 0.755‐0.815), 4.810 (P = 0.8506), and 5.285 (P = 0.8088). The optimism‐corrected estimate through the internal validation was 0.774 (95% CI, 0.744‐0.804) and the optimism‐corrected calibration curve was close to the ideal line with mean absolute error = 0.012. In external validation, the discrimination was 0.657 (95% CI, 0.560‐0.755) and the two calibration statistics were 0.790 (P = 0.9397) and 3.103 (P = 0.5408), respectively.ConclusionA validated prediction model based on a large Korean RNU cohort was developed with acceptable performance to estimate DFS in patients with UTUC.
Understanding the overlap between cyberbullying and cyberhate perpetration: Moderating effects of toxic online disinhibition
Authors: Wachs Sebastian , Wright Michelle F. , Vazsonyi Alexander T. 
Published: July 2019

AbstractBackgroundProblem behaviour theory postulates that different forms of norm violations cluster and can be explained by similar antecedents. One such cluster may include cyberbullying and cyberhate perpetration. A potential explanatory mechanism includes toxic online disinhibition, characterised by anonymity, an inability to empathise and to recognise and interpret social cues. The current study to develop a better understanding of the relationship between cyberhate and cyberbullying to inform effective intervention and prevention efforts.AimsTo test the link between cyberbullying and cyberhate and whether this relationship was moderated by toxic online disinhibition.MethodsSelf‐report questionnaires on cyberbullying, cyberhate, and toxic online disinhibition were completed by 1,480 adolescents between 12 and 17 years old (M = 14.21 years; SD = 1.68).ResultsIncreases in cyberbullying perpetration and toxic online disinhibition were positively related to cyberhate perpetration. Furthermore, cyberbullies reported more cyberhate perpetration when they reported higher levels of toxic online disinhibition and less frequent cyberhate perpetration when they reported lower levels of toxic online disinhibition.ConclusionThe current study provides evidence of a possible link between cyberbullying and cyberhate perpetration, moderated by toxic online disinhibition. This suggests that, to be effective, prevention and intervention programmes should (i) consider the co‐occurrence of varying forms of cyberaggression and (ii) consider potential effects of the online environment on aggressive online behaviour among young people.
Effect of incorporation of germinated flour and protein isolate from chickpea on different quality characteristics of rice‐based noodle
Authors: Sofi Sajad Ahmad , Singh Jagmohan , Chhikara Navnidhi , Panghal Anil 
Published: July 2019

AbstractBackground and objectivesNoodles from rice are consumed in most of the Asian countries due to ease in preparation and good consumer acceptability. So, the present study was designed to develop protein‐enriched noodles from rice flour and chickpea (germinated flour from 7% to 30% and protein isolate from 3% to 10%) and to investigate their physicochemical, cooking, rheology, electrophoretic properties, in vitro starch and protein digestibility and sensory evaluation.FindingsThe present study was carried out to access the effect of germinated flour (7%–30%) and protein isolate (3%–10%) from chickpea on rice‐based noodle qualities. Dynamic rheology of rice‐based noodle dough showed shear thinning behavior (G′ > G″) with weak gel‐like characteristics. All the rheological models (Power law, Herschel–Bulkley, Bingham, and Casson) used were best fitted to experimental data with coefficient of regression (R2) >93%. Results showed that with increase in level of the germinated chickpea flour and protein isolate, protein content (7.22%–14.35%), antioxidant activity (22.75%–33.79%), and total phenolic content (117.65–223.35 mg GAE/100 g) of the rice‐based noodles increased significantly (p ≤ 0.05), whereas lightness, cooking time (13.35–10.13 min), cooking loss (7.38%–6.78%), cooked weight (41.40–33.15 g/100 g), percentage of starch gelatinization (65.36–41.26), and in vitro starch digestibility decreased significantly. The in vitro protein digestibility (78.68%–87.59%) of noodles increased significantly with added chickpea ingredients (germinated flour and protein isolate). The glycemic index (70.83 to 57.49) of the rice‐based noodles showed significant (p ≤ 0.05) decrease with increase in level of chickpea ingredients (germinated flour and protein isolate). The chickpea‐enriched rice‐based noodle samples were characterized by a number of polypeptide with molecular weight from 250 to 10 kDa, with increased intensity of protein bands. Rice‐based noodles prepared with chickpea flour (20%) and protein isolate (8%) showed better overall acceptability on the basis of sensory evaluation.ConclusionsNoodles prepared with germinated chickpea flour (20%) and chickpea protein isolate (8%) showed better acceptability on the basis of sensory score and recommended for noodle making with rice flour with improved noodle quality.Significance and noveltyThe research explored the possibility of germinated chickpea flour and protein isolate addition to rice for noodle formulation as functional food to target protein malnutrition, diabetes, and celiac diseases.
Interior Supported Hierarchical TiO2@Co3O4 Derived from MOF‐on‐MOF Architecture with Enhanced Electrochemical Properties for Lithium Storage
Authors: Yang Xu , Wang Yu , Hu Yongyuan , Zhao Hongsheng , Sun Yingying , Hua Ke , Chen Gang 
Published: July 2019

AbstractMetal‐organic frameworks (MOFs)‐derived materials are widely applied in functional materials with noble structures. Here, a well‐designed strategy for generating hierarchical double‐shelled nanoboxes is reported. Starting from the construction of hierarchical MOF‐on‐MOF architecture followed by a post‐annealing treatment, hierarchical TiO2@Co3O4 nanoboxes are successfully synthesized with an interior TiO2 shell supporting the outer hollow‐Co3O4‐aggregates shell with a CoTiO3 intermediate layer. The TiO2@Co3O4 electrode displays a superior lithium storage performance in terms of high reversible capacity (920.5 mAh g−1 after 150 cycles at 200 mA g−1, 58.6 % higher than theoretical capacity), outstanding high‐rate long‐term cycling stability (838.6 mAh g−1 after 600 cycles at 1000 mA g−1, 44.5 % higher than theoretical capacity), and remarkable rate capability (good restorability at 2000 mA g−1). Furthermore, the morphology and electrochemical kinetic analysis proves that TiO2@Co3O4 has a more stable structure, higher capacitive contribution, and better Li‐ion diffusion, which enhance the lithium‐storage performance.
Polarity‐Induced Excited‐State Intramolecular Proton Transfer (ESIPT) in a Pair of Supramolecular Isomeric Multifunctional Dynamic Metal–Organic Frameworks
Authors: Halder Arijit , Bhattacharya Biswajit , Haque Fazle , Dinda Susanta , Ghoshal Debajyoti 
Published: July 2019

AbstractA pair of supramolecular isomers of CdII‐based MOF have been synthesized by utilizing a flexible N,N′‐donor linker and a dicarboxylate with ESIPT (excited‐state intramolecular proton transfer) fluorophore by varying the reaction media. One of the MOFs has a 3D four‐fold interpenetrating framework with guest solvent in the structure that undergoes a solvent‐dependent crystalline‐to‐crystalline structural transformation, which has been extensively studied by powder XRD and IR spectroscopy. The other MOF is structurally rigid in nature and has a two‐fold interpenetrating structure without any guest molecules. Both the compounds show moderate CO2 adsorption and one of them, the MOF with the four‐fold interpenetrating structure, also shows moderately high H2 adsorption. Furthermore, both the compounds show interesting luminescence behavior. In the solid state, the two compounds show single‐peak spectra, whereas upon suspension of these compounds in polar solvents, the maxima split into two peaks with a large Stokes shift. On the other hand, in nonpolar solvents, only one emission maximum is observed. This solvatochromic dual‐emission phenomenon is due to ESIPT, which has been extensively studied.
Ferrocenes with a Persulfurated Cyclopentadienyl Ring: Synthesis, Structural Studies, and Optoelectronic Properties
Authors: Blockhaus Tobias , Klein‐Heßling Christian , Zehetmaier Peter M. , Zott Fabian L. , Jangra Harish , Karaghiosoff Konstantin , Sünkel Karlheinz 
Published: July 2019

AbstractPersulfurated arenes are a fascinating class of functional molecules with a wide range of potential applications. Ferrocenes are also a multifaceted class of aromatic compounds that can easily be finetuned for an enormous variety of desired properties. A combination of both substance classes might yield an even wider field of applications. Herein, we describe the synthesis of two ferrocenes with one persulfurated cyclopentadienyl ring [C5(SR)5], with R=Me or Ph, together with their crystal structures, optical, and electrochemical properties. Both crystal structures show significant intramolecular sulfur‐iron interactions as well as weak intermolecular sulfur– contacts. Cyclovoltammetry of the [C5(SPh)5] compound shows a high oxidation potential of 651 mV vs. FcH/FcH+.
[18F]PRIMATX, a New Positron Emission Tomography Tracer for Imaging of Autotaxin in Lung Tissue and Tumor‐Bearing Mice
Authors: Briard Emmanuelle , Joshi Aniket D. , Shanmukhappa Shiva , Ilovich Ohad , Auberson Yves P. 
Published: July 2019

AbstractAutotaxin (ATX) is a secreted enzyme with tissue levels associated with tissue injury, which increase during wound healing and chronic fibrotic diseases. We selected [18F](R,E)‐3‐(4‐chloro‐2‐((5‐methyl‐2H‐tetrazol‐2‐yl)methyl)phenyl)‐1‐(4‐((5‐(2‐fluoroethoxy)pyridin‐2‐yl)methyl)‐2‐methylpiperazin‐1‐yl)prop‐2‐en‐1‐one ([18F]PRIMATX, [18F]2), a tracer for positron emission tomography, to image ATX expression in vivo. It successfully differentiates expression levels in lung tissue samples from idiopathic pulmonary fibrosis patients, and allows the detection of ATX‐expressing tumors in living mice, confirming its potential for development as a clinical imaging agent.
Ultrafast, Facile, and Scalable Microwave‐Assisted Synthesis Method to Prepare Nickel Sulfide Nanosheets for High Energy Density Hybrid Capacitors
Authors: Naveed Muhammad , Younas Waqar , Cao Chuanbao , Rafai Souleymen , Khalid Syed , Wang Zhitao , Qiao Chen 
Published: July 2019

AbstractA fast, easy, and scalable microwave‐assisted synthesis method is introduced to prepare NiS nanosheets (NiS NS). Two‐dimensional mesoporous NiS NS with high specific surface area of 210 m2 g−1 is capable of excellent electrochemical performance on carbon cloth. It possesses an excellent specific capacitance of 2241 F g−1 (271 mA h g−1) at a current density of 1 A g−1 and retention of 88.3% at higher current density, indicating its remarkable rate capability. The hybrid asymmetric capacitor acquires an outstanding energy density of 73.1 Wh kg−1 at a high power density of 800 Wk g−1, and high energy density of 42.6 Wh kg−1 is maintained at an extremely high power density of 12800 W kg−1. Moreover, the assembled device shows stable performance for long‐term operation (retention of 75.2% after 10000 cycles). In addition, cyclic voltammetry (CV) and galvanostatic charge‐discharge(GCD) measurements are used to investigate the impact of the current collector on the electrochemical performance of the active material. This work may provide a pathway to synthesize low‐cost and efficient electrode materials by using the microwave for portable hybrid energy devices.
Graphene Oxide Induced High Crystallinity of SAPO‐11 Molecular Sieves for Improved Alkane Isomerization Performance
Authors: Du Yanyan , Yao Heliang , Zhao Lei , Yang Hongmei , Wang Min , Yuan Long , Xu Yanhui , Li Jiusheng 
Published: July 2019

AbstractIn the presence of graphene oxide (GO), highly crystallized SAPO‐11 molecular sieves were prepared by a non‐solvent method. The functional groups of GO bind with raw materials, with the formation of hydrogen bonds and acid amides, verified by the XPS analysis. The inorganic precursor and structure‐directing agent molecules will be fixed on the surface of GO, increasing the reaction rate and crystallization for SAPO‐11 preparation, confirmed by the XRD and BET results. Meanwhile, the IR analysis of the adsorption of pyridine indicates there are more acidic sites for the highly crystallized SAPO‐11 sample. The resultant well‐crystallized SAPO‐11 molecular sieves exhibited greater isomer yield and better catalytic activity compared to traditional SAPO‐11 prepared without GO.
Effect of color temperature on appearance of paintings exhibited under LED lighting
Authors: Bhattacharjee Amrita , Pal Swati 
Published: July 2019

AbstractColour of light modulates the appearance of displayed artifacts in exhibition. To understand the effect of light on appearance of paintings, few studies have experimented to establish a relation between pleasantness with the correlated colour temperature (CCT) of light. However, some studies have found that CCT has no significant effect on pleasant appearance of painting. Therefore, in this article, an experiment with a qualitative (questionnaire on semantic differential scale, N = 30) approach was designed to understand the effect of CCT on appearance of paintings exhibited under LED lights. The findings from the experimental result depict that the appearance of paintings changes due to different CCTs of LEDs having the same illuminance. In addition, the result reveals that for both mediums of paintings considered in this study, in comparison to warm white LED and artificial daylight LED, cool white LED has appeared to be more pleasant having moderately warm feelings to the viewers.
Glycoluril Clips for the Construction of Chemoresponsive Supramolecular Polymer Networks through Homodimer Cross‐Links
Authors: Gosecki Mateusz , Urbaniak Malgorzata , Gosecka Monika 
Published: July 2019

AbstractThe formation of polymer supramolecular networks exhibiting selective sensitivity toward a narrow class of organic compounds is still a significant challenge within the area of reversibly cross‐linked materials. Glycoluril molecular clips are U‐shaped molecules, which, besides the ability to undergo self‐sorting homodimerization, exhibit selectively high molecular recognition of dihydroxyaromatic species. A glycoluril clip diol was introduced into a polymer backbone by using standard polyurethane chemistry. Immobilization of the molecular clip along the polyurethane macromolecule (Glyc Clip‐polyurethane) was shown to preserve the native association properties of the clip. Clip motifs embedded in macromolecules form homodimer cross‐links in CHCl3 and the resulting structures have a thermoresponsive character. The strength of homodimerization Khomodimer varies from 7.74 104 l mol−1 at 265 K to 9.47 102 l mol−1 at 315 K. A 30 wt % solution of Glyc Clip‐polyurethane undergoes gelation at room temperature and exhibits a constant elastic modulus, approximately 3.1 ⋅ 104 Pa, in the broad investigated frequency range. The obtained organogels exhibit selective chemoresponsive properties in the presence of resorcinol, which was demonstrated with 1H high‐resolution magic‐angle‐spinning NMR spectroscopy and rheological measurements.