bluuebunny/crossref_metadata_2025_split huggingface dataset:
Use of Mesoscopic Host Matrix to Induce Ferrimagnetism in Antiferromagnetic Spinel Oxide
Authors: Park Chaewoon , Wu Rui , Lu Ping , Zhao Hui , Yang Jinbo , Zhang Bruce , Li Weiwei , Yun Chao , Wang Haiyan , MacManus‐Driscoll Judith L. , Cho Seungho 
Published: January 2018

AbstractDespite the advances in the methods for fabricating nanoscale materials, critical issues remain, such as the difficulties encountered in anchoring, and the deterioration in their stability after integration with other components. These issues need to be addressed to further increase the scope of their applicability. In this study, using epitaxial mesoscopic host matrices, materials are spatially confined at the nanoscale, and are supported, anchored, and stabilized. They also exhibit properties distinct from the bulk counterparts proving their high quality nanoscale nature. ZnFe2O4 and SrTiO3 are used as the model confined material and host matrix, respectively. The ZnFe2O4 phases are spatially confined by the SrTiO3 mesoscopic matrix and have strongly enhanced ferrimagnetic properties as compared to bulk and plain thin films of ZnFe2O4, with a Curie temperature of ≈500 K. The results of a series of control experiments and characterization measurements indicate that cationic inversion, which originates from the high interface‐to‐volume ratio of the ZnFe2O4 phase in the ZnFe2O4–SrTiO3 nanocomposite film, is responsible for the magnetization enhancement. An exchange bias is observed, owing to the coexistence of ferrimagnetic and antiferromagnetic regions in the confined ZnFe2O4 phase. The magnetic properties are dependent on the ZnFe2O4 crystallite size, which can be controlled by the growth conditions.
New Class of Efficient Terahertz Generators: Effective Terahertz Spectral Filling by Complementary Tandem Configuration of Nonlinear Organic Crystals
Authors: Kang Bong Joo , Lee Seung‐Heon , Kim Won Tae , Lee Seung‐Chul , Lee Kanghee , Benacchio Giordano , Montemezzani Germano , Jazbinsek Mojca , Kwon O‐Pil , Rotermund Fabian 
Published: January 2018

AbstractIntense table‐top terahertz (THz) sources, which have progressed tremendously in the last decade, are becoming more important for advanced THz science to study light–matter interactions and subsequent applications. Nonlinear optical organic crystals exhibit great potential for intense broadband THz wave generation due to their large nonlinearities and advantageous phase‐matching characteristics. However, the phonon‐induced absorption of most organic crystals in the THz region leads to undesired modulation of the spectrum and limits the THz output efficiency. To overcome such drawbacks, phonon‐mode engineering by modification of molecular structures is suggested, but intrinsic limitations still remain. Here, an efficient alternative approach has been recently proposed for generating intense broadband THz waves based on a tandem configuration that combines two complementary nonlinear organic crystals. Such configuration compensates for the spectral gap of the generated THz waves mainly caused by phonon absorption and additionally enhances the optical‐to‐THz conversion efficiency. The proposed organic tandem generator indicates a substantial enhancement of the peak‐to‐peak THz electric field due to effective spectral filling at phonon absorption gaps. As a result, such tandem configuration provides a versatile platform to generate gapless broadband THz spectra with suppressed phonon absorption and contributes to advancing the development of intense broadband coherent THz sources.
Biomimetic Architectures for Peripheral Nerve Repair: A Review of Biofabrication Strategies
Authors: Wieringa Paul A. , Gonçalves de Pinho Ana Rita , Micera Silvestro , van Wezel Richard J. A. , Moroni Lorenzo 
Published: January 2018

AbstractBiofabrication techniques have endeavored to improve the regeneration of the peripheral nervous system (PNS), but nothing has surpassed the performance of current clinical practices. However, these current approaches have intrinsic limitations that compromise patient care. The “gold standard” autograft provides the best outcomes but requires suitable donor material, while implantable hollow nerve guide conduits (NGCs) can only repair small nerve defects. This review places emphasis on approaches that create structural cues within a hollow NGC lumen in order to match or exceed the regenerative performance of the autograft. An overview of the PNS and nerve regeneration is provided. This is followed by an assessment of reported devices, divided into three major categories: isotropic hydrogel fillers, acting as unstructured interluminal support for regenerating nerves; fibrous interluminal fillers, presenting neurites with topographical guidance within the lumen; and patterned interluminal scaffolds, providing 3D support for nerve growth via structures that mimic native PNS tissue. Also presented is a critical framework to evaluate the impact of reported outcomes. While a universal and versatile nerve repair strategy remains elusive, outlined here is a roadmap of past, present, and emerging fabrication techniques to inform and motivate new developments in the field of peripheral nerve regeneration.
Efficient Metacoupler for Complex Surface Plasmon Launching
Authors: Xu Quan , Zhang Xueqian , Wei Minggui , Ren Guanhua , Xu Yuehong , Li Yanfeng , Wang Huabin , Ouyang Chunmei , Han Jiaguang , Zhang Weili 
Published: January 2018

AbstractSurface plasmons (SPs) promise versatile potential applications in many aspects and thus have been a subject of enormous interest. As the most essential functionality, efficient coupling of free‐space light into complex SP field is of particular interest in current research. Most existing methods only focus on either efficient coupling or complex SP field generation, which is insufficient to support the ever‐increasing demand of practical applications. Herein, it is demonstrated both theoretically and experimentally that a metasurface composed of properly designed C‐shaped slit resonators can function as an efficient SP coupler. More importantly, it is shown that the phase and amplitude of the coupled SPs can be simultaneously manipulated, which would offer considerable design flexibilities for complex SP launching. This methodology can provide a wide platform for the design and fabrication of high‐performance plasmonic devices in the future, especially large‐area ones in practical applications.
Carboxyl‐Directed Conjugate Addition of C−H Bonds to α,β‐Unsaturated Ketones in Air and Water
Authors: Han Wen‐Jing , Pu Fan , Li Chao‐Jun , Liu Zhong‐Wen , Fan Juan , Shi Xian‐Ying 
Published: January 2018

AbstractA simple ruthenium‐catalyzed conjugate addition of C−H bonds to α,β‐unsaturated ketones directed by a removable carboxyl group was developed as an effective protocol to synthesize ortho‐alkylated benzoic acids in a greener manner. Without any additives, satisfactory to excellent yields of the targeted products were achieved in neat water, and the process characterizes in mild reaction conditions (in air and water), simple operations, and broad substrate scope. Noteworthy features of this method include mild reaction conditions (in air and water), operational simplicity and broad substrate scope. The versatility and utility of the addition products were demonstrated through further transformation into commonly inaccessible but highly useful motifs of meta‐substituted alkylbenzenes and 3‐substituted isochromanones.magnified image
Conversion of Primary Amines to Symmetrical Secondary and Tertiary Amines using a Co‐Rh Heterobimetallic Nanocatalyst
Authors: Chung Hyunho , Han Seulgi , Chung Young Keun , Park Ji Hoon 
Published: January 2018

AbstractSymmetrical tertiary amines have been efficiently realized from amine and secondary amines via deaminated homocoupling with heterogeneous bimetallic Co2Rh2/C as catalyst (molar ratio Co:Rh=2:2). Unsymmetric secondary anilines were produced from the reaction of anilines with symmetric tertiary amines. The Co2Rh2/C catalyst exhibited very high catalytic activity towards a wide range of amines and could be conveniently recycled ten times without considerable leaching.magnified image
I2‐Triggered Reductive Generation of N‐Centered Iminyl Radicals: An Isatin‐to‐Quinoline Strategy for the Introduction of Primary Amides
Authors: Gao Qinghe , Liu Zhaomin , Wang Yakun , Wu Xia , Zhang Jixia , Wu Anxin 
Published: January 2018

AbstractAn efficient and alternative isatin‐to‐quinoline strategy illustrates the metal‐like behavior of molecular iodine in the N−O reduction of ketoxime acetates. This process involves N−O/C−N bond cleavages and C−C/C−N bond formation to furnish pharmacologically significant quinoline‐4‐carboxamide derivatives. In this process, metal catalysts and extra oxidants are unnecessary. Mechanistic studies confirm the crucial role of molecular iodine in the iminyl radical generation process, in that molecular iodine can catalyze single‐electron reduction coupling reactions in a manner similar to transition metals.magnified image
Formic Acid‐Based Liquid Organic Hydrogen Carrier System with Heterogeneous Catalysts
Authors: Zhong Heng , Iguchi Masayuki , Chatterjee Maya , Himeda Yuichiro , Xu Qiang , Kawanami Hajime 
Published: January 2018

AbstractFormic acid (HCOOH), with a hydrogen capacity of 4.3 wt%, has attracted increasing interest in the utilization as a promising H2 carrier. The CO2HCOOH cycle is believed to be a simple and environmental friendly process for the charge and discharge of H2. In this review, the state‐of‐the‐art technologies and recent results of the heterogeneously catalyzed dehydrogenation of formic acid are summarized. Based on these achievements, future outlooks for improving this system for practical applications are proposed.
Formation of Rhodium Metal Ensembles that Facilitate Nitric Oxide Reduction over Rhodium/Ceria in a Stoichiometric Nitric Oxide–Carbon Monoxide–Propene–Oxygen Reaction
Authors: Ohyama Junya , Nishiyama Takumi , Satsuma Atsushi 
Published: January 2018

AbstractA series of ceria‐supported Rh nanoparticles (NPs) that have various particle sizes of 2–7 nm was prepared to investigate the size effect of Rh NPs on NO reduction in NO–CO–C3H6–O2 under stoichiometric conditions. The turnover frequency (TOF) for NO reduction on Rh NPs increased drastically according to their particle size. The strong size dependence of the TOF was attributed to the oxidation states of Rh NPs but not to particle geometries, which include fractions of surface local sites (e.g., corner, edge, plane) and the surface crystal structures (e.g., Rh(1 1 1), (1 0 0)). The variation of the TOF with the Rh metal fraction suggested that Rh metal ensembles are highly active species for NO reduction.
A Phase 1, Randomized, Placebo‐ and Active‐Controlled Crossover Study to Determine the Effect of Single‐Dose Ertugliflozin on QTc Interval in Healthy Volunteers
Authors: Sahasrabudhe Vaishali , Saur Didier , Matschke Kyle , Terra Steven G. , Hickman Anne , Huyghe Isabelle , Shi Haihong , Cutler David L. 
Published: January 2018

AbstractErtugliflozin, a selective sodium‐glucose cotransporter‐2 inhibitor, is being developed for the treatment of type 2 diabetes mellitus. This randomized, 6‐sequence, 3‐period crossover study assessed the effect of ertugliflozin (100 mg; supratherapeutic dose) vs placebo and moxifloxacin (400 mg; positive control) on the QT interval corrected for heart rate (QTc) in 42 male or female healthy subjects. Triplicate electrocardiograms were performed predose and serially over 48 hours postdose in each treatment period. The maximum observed least‐squares mean (90% CI) difference in QTc using the Fridericia correction (QTcF) between ertugliflozin and placebo was 2.99 (1.68, 4.30) milliseconds, 24 hours postdose, below the 5‐millisecond threshold of potential clinical concern. The upper limits of the 2‐sided 90% CI were less than 10 milliseconds at all postdose time points. The lower 90% CIs for the least‐squares mean QTcF difference between moxifloxacin and placebo were greater than 5 milliseconds at the preselected time points of 2, 3, and 4 hours postdose, establishing study sensitivity. The majority of adverse events were mild in severity. In healthy volunteers, at a supratherapeutic dose of 100 mg, ertugliflozin was not associated with QTc interval prolongation.
Paleoecological evidence for decadal increase in phytoplankton biomass off northwestern Australia in response to climate change
Authors: Yuan Zineng , Liu Dongyan , Keesing John K. , Zhao Meixun , Guo Shixin , Peng Yajun , Zhang Hailong 
Published: January 2018

Abstract
Ocean warming can modify the phytoplankton biomass on decadal scales. Significant increases in sea surface temperature (SST) and rainfall in the northwest of Australia over recent decades are attributed to climate change. Here, we used four biomarker proxies (TEX86 index, long‐chain n‐alkanes, brassicasterol, and dinosterol) to reconstruct approximately 60‐year variations of SST, terrestrial input, and diatom and dinoflagellate biomass in the coastal waters of the remote Kimberley region. The results showed that the most significant increases in SST and terrestrial input occurred since 1997, accompanied by an abrupt increase in diatom and dinoflagellate biomasses. Compared with the results before 1997, the average temperature during 1997–2011 increased approximately 1°C, rainfall increased 248.2 mm, brassicasterol and dinosterol contents increased 8.5 and 1.7 times. Principal component analysis indicated that the warming SST played a more important role in the phytoplankton increase than increased rainfall and river discharge.
Development of an EUV Microscope with Focused Coherent EUV Based on Coherent Diffraction Imaging Method for Defect Evaluation on an EUV Mask
Authors: HARADA TETSUO , HASHIMOTO HIRAKU , WATANABE TAKEO 
Published: January 2018

SUMMARYFor evaluation of defects on extreme ultraviolet (EUV) masks at the blank state of manufacturing, we developed a microcoherent EUV scatterometry microscope (micro‐CSM). The illumination source is coherent EUV light with a 140‐nm focus diameter on the defect using a Fresnel zoneplate. This system directly observes the reflection and diffraction signals from a phase defect. The phase and the intensity image of the defect is reconstructed with the diffraction images using ptychography, which is an algorithm of the coherent diffraction imaging. We observed programmed phase defect on a blank EUV mask. Phase distributions of these programmed defects were well reconstructed quantitatively. We also observed actual defects which were inspected by the ABI tool. Actual amplitude defect and phase defect images were reconstructed with intensity and phase contrast. The reconstructed image indicated the defect type of these defect. The micro‐CSM is very powerful tool to evaluate an EUV phase defect.
Severity of hypoglycaemia and health‐related quality of life, work productivity and healthcare costs in patients with type 2 diabetes in Europe
Authors: Pawaskar Manjiri , Witt Edward A. , Engel Samuel S. , Rajpathak Swapnil N. , Iglay Kristy 
Published: January 2018

SummaryAimsHypoglycaemia in patients with type 2 diabetes mellitus (T2DM) is associated with poor health outcomes, such as reduced health‐related quality of life (HRQoL). This study aimed to assess the impact of hypoglycaemic events by severity on HRQoL, work productivity and healthcare costs in patients with T2DM.Materials and MethodsEuropean patients with T2DM selected from the National Health and Wellness Survey who were currently receiving pharmacologic therapy were stratified into 3 groups based on the reported history and severity of hypoglycaemic events (no event, nonsevere, severe) experienced in the previous 3 months. Patients’ work productivity, HRQoL, healthcare resource use (HCRU) and associated costs were assessed as self‐reported outcomes.ResultsOf 1269 patients included in the study, 652 (51.4%) patients had not experienced an event, while 533 (42.0%) and 84 (6.6%) patients had experienced nonsevere and severe hypoglycaemic events, respectively, in the previous 3 months. An increase in hypoglycaemia severity was associated with a decrease in HRQoL, and an increase in HCRU and healthcare costs.ConclusionsThe impact of hypoglycaemia varies by severity and has a negative impact on HRQoL and overall HCRU and costs.
Increased pain sensitivity in migraine and tension‐type headache coexistent with low back pain: A cross‐sectional population study
Authors: Ashina S. , Lipton R.B. , Bendtsen L. , Hajiyeva N. , Buse D.C. , Lyngberg A.C. , Jensen R. 
Published: January 2018

AbstractBackgroundLow back pain is common in the general population and in individuals with primary headaches. We assessed the relative frequency of self‐reported back pain in persons with and without primary headaches and examined pain sensitivity.MethodA population of 796 individuals completed a headache interview based on ICHD criteria and provided data of interest in a self‐administered questionnaire. Headache cases were classified into chronic (≥15) (CH) or episodic (<15 headache days/month) (EH). A total of 495 had a pericranial total tenderness score (TTS), and 494 had cephalic and extracephalic pressure pain thresholds (PPTs) assessed.ResultsAdjusted for age, gender, education and poor self‐rated health, 1‐year relative frequency of back pain was higher in individuals with CH (82.5%) and EH (80.1%) compared to no headache group (65.7%). In persons with back pain, TTS was higher in CH, (26.3 ± 12.1) than in EH, (18.5 ± 10.0; p < 0.001) and higher in both groups than in those with no headache, 10.8 ± 8.5 (p < 0.001 and p < 0.001, respectively). In persons with back pain, temporalis PPT were lower in CH, 169.3 ± 57.8, than in EH, 225.2 ± 98.1, and in no headache group, 244.3 ± 105.4 (p = 0.02 and p = 0.01, respectively). In persons with back pain, finger PPT were lower in CH, 237.1 ± 106.7, than in EH, 291.3 ± 141.3, or in no headache group, 304.3 ± 137.4 (p = 0.02 and p < 0.001, respectively).ConclusionBack pain is highly frequent in individuals with CH, followed by EH and no headache. In persons with CH, back pain is associated with lower cephalic and extracephalic PPTs suggesting central sensitization may be a substrate or consequence of comorbidity.SignificanceWe found that back pain has high relative frequency in individuals with CH followed EH and no headache. Back pain is associated with low cephalic and extracephalic PPTs in individuals with CH. Central sensitization may be a substrate or consequence of this comorbidity of back pain and CH.
Magnetic molecularly imprinted polymers based on silica modified by deep eutectic solvents for the rapid simultaneous magnetic‐based solid‐phase extraction of Salvia miltiorrhiza bunge, Glycine max (Linn.) Merr and green tea
Authors: Li Guizhen , Wang Xiaoqin , Row Kyung Ho 
Published: January 2018

AbstractNovel magnetic molecularly imprinted polymers (MMIPs) with multiple‐template based on silica were modified by four types of deep eutectic solvents (DESs) for the rapid simultaneous magnetic solid‐phase extraction (MSPE) of tanshinone Ⅰ, tanshinone ⅡA, and cryptotanshinone from Salvia miltiorrhiza bunge; glycitein, genistein, and daidzein from Glycine max (Linn.) Merr; and epicatechin, epigallocatechin gallate, and epicatechin gallate from green tea, respectively. The synthesized materials were characterized by Fourier transform infrared spectroscopy and field emission scanning electron microscopy. Single factor experiments were to explore the relationship between the extraction efficiency and four factors (the sample solution pH, amount of DESs for modification, amount of adsorbent, and extraction time). It was showed that the DES4‐MMIPs have better extraction ability than the MMIPs without DESs and the other three DESs‐modified MMIPs. The best extraction recoveries with DES4‐MMIP were tanshinone Ⅰ (85.57%), tanshinone ⅡA (80.58%), cryptotanshinone (92.12%), glycitein (81.65%), genistein (87.72%), daidzein (92.24%), epicatechin (86.43%), epigallocatechin gallate (80.92%), and epicatechin gallate (93.64%), respectively. The novel multiple‐template MMIPs materials modified by DES for the rapid simultaneous MSPE of active compounds were proved to reduce the experimental steps than single‐template technique, and increase the extraction efficiency.
Location‐dependent sensing data collection and processing mechanism in vehicular network
Authors: Rui Lanlan , Zhang Yao , Zhang Pan , Qiu Xuesong 
Published: January 2018

AbstractWith the promotion of the Internet of Things, in which a growing number of objects in everyday life are able to communicate with each other, crowdsensing has attracted public attention. Among different devices, vehicles with various sensors can perform the traffic data collection tasks released by the traffic center, which is helpful for monitoring road conditions. Thus, we use crowdsensing between vehicles to improve the precision of traffic state estimation. We also propose a location‐dependent sensing task assignment mechanism for traffic data collection and a multisource data fusion model for traffic data processing in a vehicular network. First, we establish a mathematical model for the sensing task assignment considering the vehicle's time budget constraint, location, and collection task requirements. We then propose a task assignment algorithm consisting of determining the order for vehicle allocation and scheduling the optimal collection path for each vehicle, which aims to achieve maximum platform utility. Furthermore, we put forward a fusion model, including spatial fusion and temporal fusion, to better process the collected data. We use a power average operator for the spatial fusion and a temporal correlation–based data compression algorithm for the temporal fusion. The obtained simulation results validate the accuracy and correctness of our approach.
Directionality and volatility in high‐frequency time series
Authors: Mansor Mahayaudin M. , Green David A. , Metcalfe Andrew V. 
Published: January 2018

AbstractWe provide empirical evidence of directionality in high‐frequency multivariate time series of the five largest U.S. banks between 1999 and 2017. The directionality is more apparent during crisis periods than during noncrisis periods, and it has only a low association with volatility. We use directionality and volatility as a regime‐switching criterion between two‐regime threshold vector autoregressive (TVAR) models for forecasting share prices. We compare the forecasting performances using mean relative error squared, and a weighted average of the forecasting error, with weights based on the estimated conditional variance, for individual model components and as a group. We have demonstrated that moving directionality can provide early warning of increased volatility and crisis periods, and has potential for improving one‐step ahead forecasts usingTVAR(1) models.
An intutionistic approach based on failure mode and effect analysis for prioritizing corrective and preventive strategies
Authors: Can Gülin Feryal 
Published: January 2018

AbstractAlthough Failure Mode and Effect Analysis (FMEA) is a prominent approach that has been used with convenience as the most popular risk definition and evaluation tool related to a system, a product, or a service, it has several deficiencies. This study addresses these deficiencies and proposes a new intuitionistic approach, which combines FMEA and Weighted Aggregated Sum Product Assessment (WASPAS) by implementing a new intuitionistic scale. Intuitionistic FMEA‐WASPAS can handle uncertainty, vagueness, and hesitancy of the risk evaluation process and provides flexibility for risk assessment. In this study, rankings of corrective‐preventive strategies for failure modes (FMs) are obtained by the proposed approach. To compute Intuitionistic Fuzzy Risk Priority Numbers, occurrence, severity, detection, cost, duration of exposure, and system safety factors are used. A numerical example is also illustrated to present the practicality and effectiveness of the Intuitionistic FMEA‐WASPAS approach.