bluuebunny/crossref_metadata_2025_split huggingface dataset:
Relationship between coronary diastolic pressure indexes during the wave‐free period and a novel pressure‐derived index: Diastolic pressure ratio at the optimal point
Authors: Nakao Fumiaki , Ikeda Yasuhiro , Oda Takamasa , Ueda Tooru , Ueyama Takeshi , Fujii Takashi 
Published: November 2018

AbstractObjectivesWe aimed to determine the diastolic pressure ratio at the optimal point (DROP) using a simple measurement algorithm and to compare DROP with distal coronary‐to‐aortic pressure ratios during the wave‐free period (PRWFP) and at the mid‐diastolic point (PRMD).MethodsDistal coronary and aortic pressures were measured from color pressure images of 440 beats in 48 patients with coronary stenoses. The DROP measurement point was 67% for one beat between the two rising points on the aortic pressure curve according to the distribution of the wave‐free period and the mid‐diastolic point.ResultsDROP correlated closely with PRWFP (r = 0.993, P < 0.0001) and PRMD (r = 0.997, P < 0.0001). The diagnostic efficiency was excellent (area under the receiver‐operating characteristic curve, 0.997) for both PRWFP ≤ 0.89 (specificity, 0.99; sensitivity, 0.96) and PRMD ≤ 0.89 (specificity, 0.95; sensitivity, 1.00).ConclusionsA simple pressure‐derived physiological marker of coronary stenosis, DROP, might represent other diastolic pressure indexes with a numerical equivalency to the instantaneous wave‐free ratio. DROP can be measured automatically assuming that the rising points on the aortic pressure curve are detectable. However, further large‐scale clinical investigations are needed to determine whether DROP could contribute to the further generalization of physiology‐guided percutaneous coronary intervention.
Performance of Surface‐Oxidized Ni3B, Ni2B, and NiB2 Electrocatalysts for Overall Water Splitting
Authors: Yuan Wenyi , Zhao Xiangsen , Hao Weiju , Li Jiaxuan , Wang Lincai , Ma Xiaohua , Guo Yanhui 
Published: November 2018

AbstractThe development of efficient and earth‐abundant bifunctional electrocatalysts is of great important for energy conversion and storage technologies. Three surface oxidized nickel borides of Ni−B−O@Ni3B, Ni−B−O@Ni2B and Ni−B−O@NiB2 electrocatalysts have been prepared and investigated. Surface oxidation, which is inevitable for the bifunctional nickel borides, promotes the activity for the oxygen evolution reaction (OER), but leads to activity degradation for the hydrogen evolution reaction (HER). Meanwhile, boron is found to play a crucial role in the oxidation of nickel, facilitating the formation of an active intermediate for the OER. Ni−B−O@Ni3B turns out to be the best bifunctional electrocatalyst. An alkaline electrolyzer constructed using Ni−B−O@Ni3B electrodes as both anode and cathode has achieved a current density of 10 mA cm−2 at 1.58 V for overall water splitting with satisfied durability, rivaling the integrated noble metal electrode.
Efficient Capture of Organic Dyes and Crystallographic Snapshots by a Highly Crystalline Amino‐Acid‐Derived Metal–Organic Framework
Authors: Mon Marta , Bruno Rosaria , Tiburcio Estefanía , Casteran Pierre‐Edouard , Ferrando‐Soria Jesús , Armentano Donatella , Pardo Emilio 
Published: November 2018

AbstractInvited for the cover of this issue are the groups of Emilio Pardo at Universitat de València, and Donatella Armentano at Università della Calabria. The image depicts both water contamination by industry and decontamination by metal–organic frameworks. Read the full text of the article at 10.1002/chem.201803547.
Multiple Ether‐Functionalized Phosphonium Ionic Liquids as Highly Fluid Electrolytes
Authors: Philippi Frederik , Rauber Daniel , Zapp Josef , Präsang Carsten , Scheschkewitz David , Hempelmann Rolf 
Published: November 2018

AbstractIonic liquids (ILs) are promising electrolytes, although their often high viscosity remains a serious drawback. The latter can be addressed by the introduction of multiple ether functionalization. Based on the highly atom efficient synthesis of tris(2‐ethoxyethyl) phosphine, several new phosphonium ionic liquids were prepared, which allows studying the influence of the ether side chains. Their most important physicochemical properties have been determined and will be interpreted using established approaches like ionicity, hole theory, and the Walden plot. There is striking evidence that the properties of phosphonium ionic liquids with the methanesulfonate anion are dominated by aggregation, whereas the two triple ether functionalized ILs with the highest fluidity show almost ideal behavior with other factors being dominant. It is furthermore found that the deviation from ideality is not significantly changed upon introduction of the ether side chains, although a very beneficial impact on the fluidity of ILs is observed. Multiple ether functionalization therefore proves as a powerful tool to overcome the disadvantages of phosphonium ionic liquids with large cations.
Water in Rechargeable Multivalent‐Ion Batteries: An Electrochemical Pandora's Box
Authors: Manalastas William , Kumar Sonal , Verma Vivek , Zhang Liping , Yuan Du , Srinivasan Madhavi 
Published: November 2018

AbstractMultivalent‐ion batteries built on water‐based electrolytes represent energy storage at suitable price points, competitive performance, and enhanced safety. However, to comply with modern energy‐density requirements, the battery must be reversible within an operating voltage window greater than 1.23 V or the electrochemical stability limits of free water. Taking advantage of its powerful solvation and catalytic activities, adding water to electrolyte preparations can unlock a wider gamut of liquid mixtures compared with strictly nonaqueous systems. However, a point‐by‐point sweep of all potential formulations is arduous and ineffective without some form of systematic rationalization. The present Review consolidates recent progress, pitfalls, limits, and insights critical to expediting aqueous electrolyte designs to boost multivalent‐ion battery outputs.
Use of Ce to Reinforce the Interface of Ni‐Rich LiNi0.8Co0.1Mn0.1O2 Cathode Materials for Lithium‐Ion Batteries under High Operating Voltage
Authors: Wu Feng , Li Qing , Chen Lai , Lu Yun , Su Yuefeng , Bao Liying , Chen Renjie , Chen Shi 
Published: November 2018

AbstractNickel‐rich cathode materials are among the most promising cathode materials for high‐energy lithium‐ion batteries. However, their structural and thermodynamic stability, cycle and rate performances still need to be further improved. In this study, the rare earth element Ce is employed to reinforce the interface of Ni‐rich cathode materials both internally and externally. High‐valence Ce4+ can easily cause the oxidization of Ni2+ to Ni3+ when doped into the material owing to its strong oxidation performance, thus reducing Li+/Ni2+ mixing. In addition, the inert Ce3+ ions in transition metal slabs with strong Ce−O bonds can maintain the layered structure at high delithiation state. Furthermore, when the calcination temperature during synthesis is above 500 °C, a CeO2 coating layer will form, which can protect the electrode from erosion by the electrolyte and alleviate the increasing resistance during cycling. The modified Ni‐rich materials fabricated with an erosion‐resistant CeO2 layer outside and stronger Ce−O bonds inside with reduced Li+/Ni2+ mixing exhibit excellent electrochemical properties, especially at high operating voltages, for example, the 50th capacity retention at 0.2 C within 2.75–4.5 V is improved from 89.8 % to 99.2 % after the modification.
Throughput optimization using simultaneous sensing and transmission in energy harvesting cognitive radio networks
Authors: Moradi Alieh , Farrokhi Hamid , Ghazizade Reza 
Published: November 2018

SummaryA three‐dimensional continuous‐time Markov model is proposed for an energy harvesting cognitive radio system, where each secondary user (SU) harvests energy from the ambient environment and attempts to transmit data packets on spectrum holes in an infinite queuing buffer. Unlike most previous works, the SU can perform spectrum sensing, data transmission, and energy harvesting simultaneously. We determine active probability of the SU transmitter, where the average energy consumption for both spectrum sensing and data transmission should not exceed the amount of harvested energy. Then, we formulate achievable throughput of secondary network as a convex optimization problem under average transmit and interference energy constraints. The optimal pair of controlled energy harvesting rate and data packet rate is derived for proposed model. Results indicate that no trade‐off is available among harvesting, sensing/receiving, and transmitting. The SU capability for self‐interference cancelation affects the maximum throughput. We develop this work under hybrid channels including overlay and underlay cases and propose a hybrid solution to achieve the maximum throughput. Simulation results verify that our proposed strategy outperforms the efficiency of the secondary network compared to the previous works.
Amelanotic primary vaginal melanoma: A case report with cyto‐histological correlations
Authors: Boggio Francesca , Lopez Gianluca , Del Gobbo Alessandro , Scarfone Giovanna , Marchini Maurizio , Cribiù Fulvia Milena 
Published: November 2018

AbstractVaginal mucosa represents a rare site for primary melanoma. These neoplasms more commonly occur in the postmenopausal period, usually presenting with vaginal discharge, bleeding, or palpable mass. We report a case of an 89‐year‐old woman presenting with vaginal bleeding and a non‐pigmented lesion in the lower third of the vagina at the gynaecological examination. A PAP smear and tissue incisional biopsy were concurrently performed. The cytological sample showed a subpopulation of non‐cohesive, atypical epithelioid cells suggestive for malignancy. The histological examination showed the same morphological characteristics in the neoplastic population widely underlying the vaginal epithelium, with scattered intraepithelial nests and single elements. In both samples, there was no evidence of melanin pigment within the malignant cells. Immunohistochemical analysis performed on the tissue biopsy demonstrated a strong and diffuse positivity for melanocytic markers (HMB‐45, S‐100, Melan‐A), confirming the diagnosis of primary amelanotic vaginal melanoma.
Longitudinal associations between conflict monitoring and emergent academic skills: An event‐related potentials study
Authors: Isbell Elif , Calkins Susan D. , Cole Veronica T. , Swingler Margaret M. , Leerkes Esther M. 
Published: November 2018

AbstractIdentifying the links between specific cognitive functions and emergent academic skills can help determine pathways to support both early academic performance and later academic achievement. Here, we investigated the longitudinal associations between a key aspect of cognitive control, conflict monitoring, and emergent academic skills from preschool through first grade, in a large sample of socioeconomically diverse children (N = 261). We recorded event‐related potentials (ERPs) during a Go/No‐Go task. The neural index of conflict monitoring, ΔN2, was defined as larger N2 mean amplitudes for No‐Go versus Go trials. ΔN2 was observed over the right hemisphere across time points and showed developmental stability. Cross‐lagged panel models revealed prospective links from ΔN2 to later math performance, but not reading performance. Specifically, larger ΔN2 at preschool predicted higher kindergarten math performance, and larger ΔN2 at kindergarten predicted higher first‐grade math performance, above and beyond the behavioral performance in the Go/No‐Go task. Early academic skills did not predict later ΔN2. These findings provided electrophysiological evidence for the contribution of conflict monitoring abilities to emergent math skills. In addition, our findings suggested that neural indices of cognitive control can provide additional information in predicting emergent math skills, above and beyond behavioral task performance.
Obesity and eating disorders: Articles from the International Journal of Eating Disorders 2017–2018
Authors: Marcus Marsha D. 
Published: November 2018

AbstractObjectiveThis virtual issue of the International Journal of Eating Disorders (IJED) is presented in conjunction with The Obesity Society (TOS) to coincide with Obesity Week held in Nashville, TN November 11‐15, 2018.MethodsWe present selected articles published in IJED in 2017‐2018 that are relevant to scholars who focus on obesity, eating disorders (EDs), or both areas of inquiry.DiscussionWe hope to promote discussion and collaboration between the obesity and ED fields, and stimulate additional work, including submissions to IJED.
Electrochemical Sensing Platforms for HER2‐ECD Breast Cancer Biomarker Detection
Authors: Freitas Maria , Nouws Henri P. A. , Delerue‐Matos Cristina 
Published: November 2018

AbstractScreening and early diagnosis are crucial to increase the success of cancer patients’ treatments and improve the survival rate. To contribute to this success, distinct electrochemical immunosensing platforms were developed for the analysis of the ExtraCellular Domain of the Human Epidermal growth factor Receptor 2 (HER2‐ECD) through sandwich assays on nanomaterial‐modified screen‐printed carbon electrodes (SPCEs). The most promising platforms showed to be SPCEs modified with (i) gold nanoparticles (AuNPs) and (ii) multiwalled carbon nanotubes combined with AuNPs. The antibody‐antigen interaction was detected using a secondary antibody labelled with alkaline phosphatase and 3‐indoxyl phosphate and silver ions as the enzymatic substrate. The electrochemical signal of the enzymatically generated metallic silver was recorded by linear sweep voltammetry. Under the optimized conditions, linear calibration plots were obtained between 7.5 and 50 ng/mL and the total assay time was 2 h 20 min, achieving LODs of 0.16 ng/mL (SPCE‐MWCNT/AuNP) and 8.5 ng/mL (SPCE‐AuNP), which are well below the established cut‐off value of 15 ng/mL for this cancer biomarker.
Electrochemical Investigation of Glucose on a Highly Sensitive Nickel‐Copper Modified Pencil Graphite Electrode
Authors: Nacef Mouna , Chelaghmia Mohamed Lyamine , Affoune Abed Mohamed , Pontié Maxime 
Published: November 2018

AbstractNovel nickel‐copper modified pencil graphite electrode (Ni−Cu/PGE) was fabricated and used as non‐enzymatic sensor for glucose determination. Ni and copper were electrodeposited on PGE using cyclic voltammetry. Morphology and composition of the modified PGE electrode were characterized by field‐emission gun scanning electron microscopy (FEG‐SEM), energy‐dispersive X‐ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FT‐IR). Electrochemical oxidation of glucose was evaluated by cyclic voltammetry as well as by amperometry. Electrochemical measurements indicate that the Ni−Cu/PGE exhibits a high sensitivity of 2951 μA mM−1 cm−2, and a low detection limit of 0.99 μM which are, respectively, three times higher and twice lower than that on Ni/PGE prepared in the same conditions. Moreover, Ni−Cu/PGE exhibits a wider linear range from 1 to 10000 μM with a rapid response time within 2 s. Moreover, Ni−Cu/PGE showed a remarkable stability. The electrode was successfully applied for determination of glucose concentration in human blood without significant interference from potential endogenic interferents. The good applicability of the elaborated sensor made Ni−Cu/PGE promising for the development of effective and inexpensive non‐enzymatic glucose sensor.
Advantages of Amperometric Readout Mode of Ion‐selective Electrodes under Potentiostatic Conditions
Authors: Jaworska Ewa , Pawłowski Paweł , Michalska Agata , Maksymiuk Krzysztof 
Published: November 2018

AbstractAmperometric responses of all‐solid‐state ion‐selective electrodes, recorded under potentiostatic conditions, were studied on example of potassium‐selective sensors with polypyrrole solid contact, at potential corresponding to reduction of the solid contact material and accompanying transfer of potassium ions across the membrane. Selective and stable in time linear dependences of current vs. logarithm of analyte concentration were recorded, resulting from high membrane resistance and changing membrane potential. The influence of experimental parameters as applied potential or thickness of the membrane was discussed. Advantages of the amperometric mode compared to potentiometric one relate to possibility of tailoring analytical parameters (sensitivity, magnitude of the signal) as well as over one order of magnitude decrease of the detection limit. The latter effect is achieved due to externally forced incorporation of potassium ions from the solution to the membrane, compensating their spontaneous release to the sample solution. A method of experimental setup simplification was proposed, with application of two‐electrode system, which can be used in the absence of external polarization source. The required driving force for the current flow was assured by spontaneous oxidation process occurring at the second electrode, coupled with reduction of the solid contact material of the ion‐selective electrode. In this case also stable in time calibration plots can be recorded.
A 3,5‐DistyrylBODIPY Dye Functionalized with Boronic Acid Groups for Direct Electrochemical Glucose Sensing
Authors: Ndebele Nobuhle , Mack John , Nyokong Tebello 
Published: November 2018

AbstractThe synthesis and characterization of a novel BODIPY dye functionalized with bis‐boronic acid groups to enable direct glucose sensing through selective recognition of carbohydrates is reported. Styrylation with boronic acid groups at the 3,5‐positions of the BODIPY core results in an extension of the π‐conjugation system of the dye and in a red‐shift of the main absorption band from 500 to 637 nm. The functionalized BODIPY dye was adsorbed on a glassy carbon electrode using the drop and dry method. Modified and bare electrodes were characterized using cyclic voltammetry and scanning electrochemical microscopy, while glucose detection was carried out by using differential pulse voltammetry and chronoamperometry. The detection limit was determined to be 1.42 μM. The dye was found to be selective and sensitive towards glucose, since likely interferences have only minor effects on the glucose detection.
Molecular Imprinted Based Quartz Crystal Microbalance Nanosensors for Mercury Detection
Authors: Hüseynli Sabina , Çimen Duygu , Bereli Nilay , Denizli Adil 
Published: November 2018

AbstractMercury(II) ions are emerging as a result of more human activity, especially coal‐fired power plants, industrial processes, waste incineration plants, and mining. The mercury found in different forms after spreading around diffuses the nature of other living things. Although the damage to health is not yet clear, it is obvious that it is the cause of many diseases. This work detects the problem of mercury(II) ions, one of the active pollutants in wastewater. For this purpose, it is possible to detect the smallest amount of mercury(II) ions by means of the mercury(II) ions suppressed quartz crystal microbalance nanosensor developed. Zinc(II) and cadmium(II) ions are chosen as competitor elements. Developed nanosensor technology is known as the ideal method in the laboratory environment to detect mercury(II) ions from wastewater because of its low cost and precise result orientation. The range of linearity and the limit of detection are measured as 0.25 × 10−9–50 × 10−9 m. The detection limit is found to be 0.21 × 10−9 m. The mercury(II) ions imprinted nanosensors prepared according to the obtained experimental findings show high selectivity and sensitivity to detect mercury(II) ions from wastewater.
Complex mid‐crustal flow within a growing granite–migmatite dome: An example from the Variscan belt illustrated by the anisotropy of magnetic susceptibility and fabric modelling
Authors: Žák Jiří , Verner Kryštof , Ježek Josef , Trubač Jakub 
Published: November 2018

AbstractThis study describes anisotropy of magnetic susceptibility (AMS) of migmatites associated with crustally derived granites of the Pelhřimov core complex, Bohemian Massif. In combination with numerical modelling, we use this case example to discuss some of the general complexities related to interpreting flow patterns of anatectic lower and middle crust from magnetic fabric during growth of metamorphic domes. Magnetic lineations, reflecting tiling or zone axis of magnetically oblate grains, commonly tend to develop along the principal stretching direction. Our fabric modelling, however, shows that a lineation may also develop at a high angle to the overall flow (tectonic transport) direction as a relict of a pre‐existing fabric or due to a component of core complex axis‐parallel stretching and may be maintained for a significant period of time. Furthermore, we demonstrate that the finite magnetic fabric orientation is largely independent on the initial migmatite fabric intensity (formed before dome growth) but is rather a function of (a) shear strain, causing magnetic foliation and lineation to rotate towards the shear plane, and (b) magnitude of dome growth, causing their external rotation. Similarly, the degree of anisotropy P is also a function of accumulated shear strain and increases over time. These findings suggest that low fabric intensities may point to rapidly cooling, less sheared domains that are more likely to preserve early formed fabrics. In dome limbs undergoing protracted simple shear, low and high degrees of oblateness (as expressed by the shape parameter T) may discriminate between domains with weak and strong initial fabrics and may thus be used to map out domains with different strain histories and perhaps also with different melt proportions and rheological behaviour within metamorphic domes.
Petrogenesis and mineralization of the Huangshandong mafic–ultramafic intrusion in eastern Tianshan, NW China
Authors: He Yun‐peng , Sun Jing‐gui , Wang Zhong‐yu 
Published: November 2018

The Huangshandong deposit, located in the Central Asian Orogenic Belt (CAOB), is the largest Ni–Cu sulfide deposit in the eastern Tianshan and Beishan regions of China. The deposit is hosted in a postorogenic intrusion that comprises diorite, gabbrodiorite, bojite, olivine gabbro, gabbronorite, troctolite, and lherzolite. Here, we report the Permian zircon U–Pb crystallization ages of 278.5 ± 2.1 Ma, 278.1 ± 1.9 Ma, and 279.6 ± 1.9 Ma for the olivine gabbro, bojite, and gabbrodiorite, respectively, as well as geological, petrological, and geochemical data for the various lithofacies of the deposit. As a result of the edge cooling effect, the intrusion cooled rapidly from the outside inwards as follows: crystallizing diorite → gabbrodiorite → gabbro → lherzolite → gabbronorite. In addition, further tectonic activity resulted in the injection of a more primitive magma in place, which crystallized the lherzolite in the bottom and middle transitional zones of the intrusion. The crystallization sequence of the intrusion is generally as follows: olivine → orthopyroxene + labradorite → clinopyroxene + labradorite → amphibole + andesine. At the beginning of mineral crystallization, the metalliferous magma was segregated due to sulfide immiscibility and separated by gravity. With gabbronorite crystallization, the immiscible liquid sank to the base of the magma chamber and crystallized as Cu‐ and Ni‐rich sulfides. Tholeiitic and calc‐alkaline rocks are characterized by relative enrichment in large‐ion lithophile elements and depletion in high‐field‐strength elements, and values of Th/Ta (2.25–5.94), (Nb/La)N (1.88–4.39), and Th/Nb (0.29–0.82) indicate that the mantle source was composed of a dehydrated subducted plate or mantle wedge. In addition, values of Nb/U (2.64–10.68) and Ce/Pb (1.33–3.53) suggest that the magma was contaminated by the continental crust during its ascent along pre‐existing structures in the Carboniferous strata.