bluuebunny/crossref_metadata_2025_split huggingface dataset:
Binary Cellulose Nanocrystal Blends for Bioinspired Damage Tolerant Photonic Films
Authors: Natarajan Bharath , Krishnamurthy Ajay , Qin Xin , Emiroglu Caglar D. , Forster Amanda , Foster E. Johan , Weder Christoph , Fox Douglas M. , Keten Sinan , Obrzut Jan , Gilman Jeffrey W. 
Published: May 2018

AbstractMost attempts to emulate the mechanical properties of strong and tough natural composites using helicoidal films of wood‐derived cellulose nanocrystals (w‐CNCs) fall short in mechanical performance due to the limited shear transfer ability between the w‐CNCs. This shortcoming is ascribed to the small w‐CNC‐w‐CNC overlap lengths that lower the shear transfer efficiency. Herein, we present a simple strategy to fabricate superior helicoidal CNC films with mechanical properties that rival those of the best natural materials and are some of the best reported for photonic CNC materials thus far. Assembling the short w‐CNCs with a minority fraction of high aspect ratio CNCs derived from tunicates (t‐CNCs), we report remarkable simultaneous enhancement of all in‐plane mechanical properties and out‐of‐plane flexibility. The important role of t‐CNCs is revealed by coarse grained molecular dynamics simulations where the property enhancement are due to increased interaction lengths and the activation of additional toughening mechanisms. At t‐CNC contents greater than 5% by mass the mixed films also display UV reflecting behaviour. These damage tolerant optically active materials hold great promise for application as protective coatings. More broadly, we expect the strategy of using length‐bidispersity to be adaptable to mechanically enhancing other matrix‐free nanoparticle ensembles.
Instantaneous, Simple, and Reversible Revealing of Invisible Patterns Encrypted in Robust Hollow Sphere Colloidal Photonic Crystals
Authors: Zhong Kuo , Li Jiaqi , Liu Liwang , Van Cleuvenbergen Stijn , Song Kai , Clays Koen 
Published: May 2018

AbstractThe colors of photonic crystals are based on their periodic crystalline structure. They show clear advantages over conventional chromophores for many applications, mainly due to their anti‐photobleaching and responsiveness to stimuli. More specifically, combining colloidal photonic crystals and invisible patterns is important in steganography and watermarking for anticounterfeiting applications. Here a convenient way to imprint robust invisible patterns in colloidal crystals of hollow silica spheres is presented. While these patterns remain invisible under static environmental humidity, even up to near 100% relative humidity, they are unveiled immediately (≈100 ms) and fully reversibly by dynamic humid flow, e.g., human breath. They reveal themselves due to the extreme wettability of the patterned (etched) regions, as confirmed by contact angle measurements. The liquid surface tension threshold to induce wetting (revealing the imprinted invisible images) is evaluated by thermodynamic predictions and subsequently verified by exposure to various vapors with different surface tension. The color of the patterned regions is furthermore independently tuned by vapors with different refractive indices. Such a system can play a key role in applications such as anticounterfeiting, identification, and vapor sensing.
Topological Adhesion of Wet Materials
Authors: Yang Jiawei , Bai Ruobing , Suo Zhigang 
Published: May 2018

AbstractAchieving strong adhesion between wet materials (i.e., tissues and hydrogels) is challenging. Existing adhesives are weak, toxic, incompatible with wet and soft surfaces, or restricted to specific functional groups from the wet materials. The approach reported here uses biocompatible polymer chains to achieve strong adhesion and retain softness, but requires no functional groups from the wet materials. In response to a trigger, the polymer chains form a network, in topological entanglement with the two polymer networks of the wet materials, stitching them together like a suture at the molecular scale. To illustrate topological adhesion, pH is used as a trigger. The stitching polymers are soluble in water in one pH range but form a polymer network in another pH range. Several stitching polymers are selected to create strong adhesion between hydrogels in full range of pH, as well as between hydrogels and various porcine tissues (liver, heart, artery, skin, and stomach). The adhesion energy above 1000 J m−2is achieved when the stitching polymer network elicits the hysteresis in the wet materials. The molecular suture can be designed to be permanent, transient, or removable on‐demand. The topological adhesion may open many opportunities in complex and diverse environments.
Electronic Reconstruction in (LaVO3)m/SrVO3 (m = 5, 6) Superlattices
Authors: Dai Qingqing , Lüders Ulrike , Frésard Raymond , Eckern Ulrich , Schwingenschlögl Udo 
Published: May 2018

AbstractThe (LaV3+O3)m/SrV4+O3 (m = 5, 6) superlattices are investigated by first principles calculations. While bulk LaVO3 is a C‐type antiferromagnetic semiconductor and bulk SrVO3 is a paramagnetic metal, semiconducting A‐type antiferromagnetic states for both superlattices are found due to epitaxial strain. At the interfaces, however, the V spins couple antiferromagnetically for m = 5 and ferromagnetically for m = 6 (m‐dependence of the magnetization). Electronic reconstruction in form of charge ordering is predicted to occur with V3+ and V4+ states arranged in a checkerboard pattern on both sides of the SrO layer. As compared to bulk LaVO3, the presence of V4+ ions introduces in‐gap states that strongly reduce the bandgap and influence the orbital occupation and ordering.
Liquid Metal‐Based Multifunctional Micropipette for 4D Single Cell Manipulation
Authors: Chow Yu Ting , Man Tianxing , Acosta‐Vélez Giovanny F. , Zhu Xiongfeng , Wen Ximiao , Chung Pei‐Shan , Liu Tingyi “Leo” , Wu Benjamin M. , Chiou Pei‐Yu 
Published: May 2018

AbstractA novel manufacturing approach to fabricate liquid metal‐based, multifunctional microcapillary pipettes able to provide electrodes with high electrical conductivity for high‐frequency electrical stimulation and measurement is proposed. 4D single cell manipulation is realized by applying multifrequency, multiamplitude, and multiphase electrical signals to the microelectrodes near the pipette tip to create 3D dielectrophoretic trap and 1D electrorotation, simultaneously. Functions such as single cell trapping, patterning, transfer, and rotation are accomplished. Cell viability and multiday proliferation characterization has confirmed the biocompatibility of this approach. This is a simple, low‐cost, and fast fabrication process that requires no cleanroom and photolithography step to manufacture 3D microelectrodes and microchannels for easy access to a wide user base for broad applications.
Dirac Signature in Germanene on Semiconducting Substrate
Authors: Zhuang Jincheng , Liu Chen , Zhou Zhiyong , Casillas Gilberto , Feng Haifeng , Xu Xun , Wang Jiaou , Hao Weichang , Wang Xiaolin , Dou Shi Xue , Hu Zhenpeng , Du Yi 
Published: May 2018

Abstract2D Dirac materials supported by nonmetallic substrates are of particular interest due to their significance for the realization of the quantum spin Hall effect and their application in field‐effect transistors. Here, monolayer germanene is successfully fabricated on semiconducting germanium film with the support of a Ag(111) substrate. Its linear‐like energy–momentum dispersion and large Fermi velocity are derived from the pronounced quasiparticle interference patterns in a √3 × √3 superstructure. In addition to Dirac fermion characteristics, the theoretical simulations reveal that the energy gap opens at the Brillouin zone center of the √3 × √3 restructured germanene, which is evoked by the symmetry‐breaking perturbation potential. These results demonstrate that the germanium nanosheets with √3 × √3 germanene can be an ideal platform for fundamental research and for the realization of high‐speed and low‐energy‐consumption field‐effect transistors.
Transforming Nickel Hydroxide into 3D Prussian Blue Analogue Array to Obtain Ni2P/Fe2P for Efficient Hydrogen Evolution Reaction
Authors: Ge Yuancai , Dong Pei , Craig Steven R. , Ajayan Pulickel M. , Ye Mingxin , Shen Jianfeng 
Published: May 2018

AbstractFor the first time, a 3D Prussian blue analogue (PBA) with well‐defined spatial organization is fabricated by using a nickel hydroxide array as a precursor. The nickel hydroxide arrays are synthesized in titanium foil and reacted with K3[Fe(CN)6]. The plate‐like morphology of the nickel hydroxide is perfectly preserved and combined with abundant PBA nanocubes. After phosphidation at 350 °C, the obtained sample demonstrated excellent hydrogen evolution reaction (HER) activity in both acid and alkaline solutions to reach a current density of 10 mA cm−2 with an overpotential of only 70 and 121 mV, respectively. With an overpotential of 266 mV, it can reach a larger current density of 500 mA cm−2 in acid. The efficient HER activity of the obtained sample is mainly ascribed to its structural advantage with various active metal sites derived from the nickel hydroxide and PBA precursor. In addition, long‐term stability measurements have verified the good performance of the obtained sample in acid and alkaline solutions. An increment of overpotential of only 8 and 9 mV is observed, in the acid and alkaline solutions respectively. Beyond these assets, it is supposed that the strategy to synthesize 3D PBA arrays from nickel hydroxide can be extended to other metal–organic frameworks arrays for more electrochemical applications.
Complete Dehydrogenation of N2H4BH3 over Noble‐Metal‐Free Ni0.5Fe0.5–CeOx/MIL‐101 with High Activity and 100% H2 Selectivity
Authors: Li Si‐Jia , Wang Hong‐Li , Wulan Ba‐Ri , Zhang Xin‐bo , Yan Jun‐Min , Jiang Qing 
Published: May 2018

AbstractEfficient and selective dehydrogenation of hydrazine borane (HB), a novel hydrogen storage material with very high hydrogen content (HB, 15.4 wt%), is a key challenge for a fuel‐cell‐based hydrogen economy. However, even using the noble metal catalysts for HB decomposition, the activities are still far from satisfying, to say nothing of non‐noble‐metal‐containing catalysts. In response, as a proof‐of‐concept experiment, herein, noble‐metal‐free NiFe–CeOx nanoparticles are successfully immobilized on an MIL‐101 support without surfactant by a simple liquid impregnation method. Unexpectedly, the resultant Ni0.5Fe0.5–CeOx/MIL‐101 catalyst shows good performance, including 100% H2 selectivity, 100% conversion, and record catalytic activity (351.3 h−1) for hydrogen generation at mild temperature, which is even better than most of the noble metal heterogeneous catalysts and might be attributed to the good dispersion and uniform particle size of the Ni0.5Fe0.5–CeOx nanoparticles due to steric restrictions effect of the MIL‐101 support. Additionally, extending MIL‐101 to some other important kinds of metal–organic framework (MOF) structures, the resultant NiFe–CeOx/MOF catalysts all show good catalytic activity toward HB decomposition, showing the universality of the MOF supported NiFe–CeOx catalysts.
HLA‐DRB3/4/5 mismatches are associated with increased risk of acute GVHD in 10/10 matched unrelated donor hematopoietic cell transplantation
Authors: Ducreux Stéphanie , Dubois Valérie , Amokrane Kahina , Yakoub‐Agha Ibrahim , Labalette Myriam , Michallet Mauricette , Rubio Marie‐Thérèse , Kennel Anne , Forcade Edouard , Lafarge Xavier , Bulabois Claude‐Eric , Masson Dominique , Daguindau Etienne , Devys Anne , Moalic Virginie , Quelvennec Erwann , Boudifa Abdelali , Picard Christophe , Van Endert Peter , de Matteis Muriel , Delbos Florent , Filloux Matthieu , Pedron Béatrice , Renac Virginie , Hau Françoise , Bonneau Julie , Parissiadis Anne , Fort Marylise , Dormoy Anne , Maillard Natacha , Jollet Isabelle , Chevallier Patrice , Cesbron Anne , Bay Jacques‐Olivier , Quainon Fabienne , Garnier Federico , Socié Gérard , Loiseau Pascale , Porcher Raphaël , Peffault de Latour Régis ,   on behalf of the Société Francophone de Greffe de Moelle et de Thérapie Cellulaire (SFGM‐TC) and the Société Francophone d'Histocompatibilité et d'Immunogénétique (SFHI)
Published: May 2018

AbstractMatching for HLA‐A, ‐B, ‐C, and ‐DRB1 loci (8/8 match) is currently the gold standard for unrelated donor hematopoietic cell transplantation (HCT). In Europe, patients are also matched at the HLA‐DQB1 loci (10/10 match). However, there is increasing evidence that matching at HLA‐DRB3/4/5 loci may help to lower transplant‐related morbidity and mortality. We therefore investigated the impact of HLA‐DRB3/4/5 mismatches on outcomes in 1975 patients who received a first 10/10 matched unrelated donor (MUD) HCT in France from 2000 to 2012 for a hematological malignancy. High‐resolution typing was performed at HLA‐A, ‐B, ‐C, ‐DRB1, ‐DQB1, ‐DPB1, and ‐DRB3/4/5 loci for all donor/recipient pairs. Compared with DRB3/4/5‐matched pairs, patients who received a MUD HCT from a DRB3/4/5 mismatched donor had a significantly increased risk of grade II‐IV acute graft‐versus‐host disease (aGVHD) (Adjusted Hazard Ratio (HR) 1.43 (1.07 to 1.90)) associated with lower graft‐versus‐host disease‐free and relapse‐free survival (GRFS) (Adjusted HR 1.20 (1.02 to 1.42)). Conversely, we observed no differences in terms of chronic GVHD, nonrelapse mortality, relapse and overall survival. However, we believe that patients stand to benefit from DRB3/4/5 loci being considered for unrelated donor selection to improve GRFS and then quality of life after unrelated HCT.
Patient‐reported health‐related quality of life from the phase III TOURMALINE‐MM1 study of ixazomib‐lenalidomide‐dexamethasone versus placebo‐lenalidomide‐dexamethasone in relapsed/refractory multiple myeloma
Authors: Leleu Xavier , Masszi Tamas , Bahlis Nizar J. , Viterbo Luisa , Baker Bartrum , Gimsing Peter , Maisnar Vladimir , Samoilova Olga , Rosiñol Laura , Langer Christian , Song Kevin , Izumi Tohru , Cleeland Charles , Berg Deborah , Lin Huamao Mark , Zhu Yanyan , Skacel Tomas , Moreau Philippe , Richardson Paul G. 
Published: May 2018

AbstractTOURMALINE‐MM1 is a phase III, randomized, double‐blind, placebo‐controlled study of ixazomib plus lenalidomide and dexamethasone (IRd) versus placebo‐Rd in patients with relapsed/refractory multiple myeloma following 1–3 prior lines of therapy. The study met its primary endpoint, demonstrating significantly longer progression‐free survival (PFS) in the IRd arm versus placebo‐Rd arm (median 20.6 vs 14.7 months, hazard ratio 0.74, P = .01), with limited additional toxicity. Patient‐reported health‐related quality of life (HRQoL) was a secondary endpoint of TOURMALINE‐MM1. The European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire Core‐30 (QLQ‐C30) and Multiple Myeloma Module 20 (QLQ‐MY20) were completed at screening, the start of cycles 1 and 2, every other cycle, the end of treatment, and every 4 weeks until progression. Over median follow‐up of 23.3 and 22.9 months in the IRd and placebo‐Rd arms, mean QLQ‐C30 global health status (GHS)/QoL scores were maintained from baseline over the course of treatment in both groups, with no statistically significant differences between groups. EORTC QLQ‐C30 function domain scores were also generally maintained from baseline; similarly, physical, emotional, and social function domains were maintained with IRd versus placebo‐Rd, with slightly higher mean change from baseline scores at earlier time points with IRd. Findings from this double‐blind study demonstrate that addition of ixazomib to Rd significantly improved efficacy while HRQoL was maintained, reflecting the limited additional toxicity seen with IRd versus placebo‐Rd, and support the feasibility of long‐term IRd administration.
Syntheses of Highly Functionalized Spirocyclohexenes by Formal [4+2] Annulation of Arylidene Azlactones with Allenoates
Authors: Eitzinger Andreas , Zielke Katharina , Widhalm Michael , Robiette Raphaël , Waser Mario 
Published: May 2018

AbstractA straightforward phosphine‐catalyzed formal [4+2] annulation between α‐branched allenoates and arylidene azlactones has been developed to access highly functionalized spirocyclohexenes. This cyclization favors the γ‐addition of the phosphine‐activated allenoates over a β′‐addition pathway. Detailed computational studies support the proposed mechanism and provide a reasonable explanation for the observed regioselectivity and the noted effect of the catalyst.
Blue‐Emissive Cobalt(III) Complexes and Their Use in the Photocatalytic Trifluoromethylation of Polycyclic Aromatic Hydrocarbons
Authors: Pal Amlan K. , Li Chenfei , Hanan Garry S. , Zysman‐Colman Eli 
Published: May 2018

AbstractRoom‐temperature luminescent CoIII complexes (1 and 2) are presented that exhibit intense ligand‐to‐metal and ligand‐to‐ligand charge transfer absorption in the low‐energy UV region (λabs≈360–400 nm) and low‐negative quasi‐reversible reduction events (E1/2(red)=−0.58 V and −0.39 V vs. SCE for 1 and 2, respectively). The blue emission of 1 and 2 at RT is due to the large bite angles and strong σ‐donation of the ligands, the combined effect of which helps to separate the emissive 3LMCT (triplet ligand‐to‐metal charge transfer) and the non‐emissive 3MC (triplet metal‐centered) states. 1 and 2 were found to be powerful photo‐oxidants (E
=2.26 V and 2.75 V vs. SCE of 1 and 2, respectively) and were used as inexpensive photoredox catalysts for the regioselective mono(trifluoromethylation) of polycyclic aromatic hydrocarbons (PAHs) in good yields (ca. 40–58 %).
Reinforcement effect of nanocellulose on thermal stability of nitrile butadiene rubber (NBR) composites
Authors: Abdul Rashid Erfan Suryani , Muhd Julkapli Nurhidayatullaili Binti , Abdul Hadi Yehya Wageeh 
Published: May 2018

ABSTRACTPoor physical and chemical attraction between nitrile butadiene rubber (NBR) matrix and filler resulted in low thermal properties. Therefore, nanocrystalline cellulose (NCC) as a reinforcement agent was used to increase the heat resistance and thermal stability of NBR composites. The addition of 2 phr NCC increased thermal stability and activation energy of NBR up to 75%. Meanwhile, the storage modulus of composites increased by 12 GPa at the similar loading of NCC. Good interfacial bonds of electrostatic interactions, formation of hydrogen bonds, crystallinity and nanosized of NCC are the main factors contribute to the final properties of NBR/NCC composites. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46594.
Gender differences in mental rotation strategy depend on degree of autistic traits
Authors: Stevenson Jennifer L. , Nonack Mary B. 
Published: May 2018

Participants with low, medium, and high autistic traits completed a mental rotation task while their eye movements were recorded. Men were more accurate than women (F(1, 102) = 4.36, P = 0.04, η2p = 0.04), but there were no group differences in reaction time. In terms of eye movements, all participants tended to rely on top corners of cube figures for most angles of rotation, and bottom corners of cube figures for 0 and 90 degree rotations (duration: F(8, 816) = 21.70, P < 0.001, η2p = 0.18; count: F(8, 816) = 24.42, P < 0.001, η2p = 0.19) suggesting a shift in strategy with rotation angle. Eye movements to corners of cube figures also varied by autistic traits group and gender (duration: F(4, 204) = 2.44, P = 0.05, η2p = 0.05; count: F(4, 204) = 2.47, P = 0.05, η2p = 0.05). Participants with low and medium autistic traits tended to rely more often on the top corners, whereas women with high autistic traits relied on both the top and bottom corners and men with high autistic traits relied on all corners equally. These results suggest mental rotation strategies may vary by both gender and autistic traits. Autism Res 2018, 11: 1024–1037. © 2018 International Society for Autism Research, Wiley Periodicals, Inc.Lay SummaryThe current study looked at eye movements to assess adults' strategies when mentally rotating three‐dimensional cube figures. Adults with varying levels of autistic traits differ in their mental rotation strategies. In addition, gender differences in strategies are observed in adults with the highest level of autistic traits.
Single‐Turnover Kinetics Reveal a Distinct Mode of Thiamine Diphosphate‐Dependent Catalysis in Vitamin K Biosynthesis
Authors: Qin Mingming , Song Haigang , Dai Xin , Chan Chi‐Kong , Chan Wan , Guo Zhihong 
Published: May 2018

AbstractMenD, or (1R,2S,5S,6S)‐2‐succinyl‐5‐enolpyruvyl‐6‐hydroxycyclohex‐3‐ene‐1‐carboxylate (SEPHCHC) synthase, uses a thiamine diphosphate (ThDP)‐dependent tetrahedral Breslow intermediate rather than a canonical enamine for catalysis in the biosynthesis of vitamin K. By real‐time monitoring of the cofactor chemical state with circular dichroism spectroscopy, we found that a new post‐decarboxylation intermediate was formed from a multistep process that was rate limited by binding of the α‐ketoglutarate substrate before it quickly relaxed to the characterized tetrahedral Breslow intermediate. In addition, the chemical steps leading to the reactive post‐decarboxylation intermediates were not affected by the electrophilic substrate, isochorismate, whereas release of the product was found to limit the whole catalytic process. Moreover, these intermediates are likely kinetically stabilized owing to the low biological availability of isochorismate under physiological conditions, in contrast to the tight coupling of enamine formation with binding of the electrophilic acceptor in some other ThDP‐dependent enzymes. Together with the unusual tetrahedral structure of the intermediates, these findings strongly support a new ThDP‐dependent catalytic mode distinct from canonical enamine chemistry.
A custom‐made percutaneous flow‐restrictor to manage a symptomatic congenital porto‐systemic shunt in an infant
Authors: Roggen Mieke , Cools Bjorn , Maleux Geert , Gewillig Marc 
Published: May 2018

AbstractPortosystemic shunts allow splanchnic blood to bypass the liver unfiltered, and may cause serious pulmonary and cerebral dysfunction; closure is therefore recommended. In patients where the portal system is hypoplastic, closure by a staged approach with a flow reducer may be necessary. We report a new, reliable, short, and adjustable device that can be delivered through a small 8‐Fr sheath.