bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bioinspired Nanocomposite Hydrogels with Highly Ordered Structures
Authors: Zhao Ziguang , Fang Ruochen , Rong Qinfeng , Liu Mingjie 
Published: October 2017

AbstractIn the human body, many soft tissues with hierarchically ordered composite structures, such as cartilage, skeletal muscle, the corneas, and blood vessels, exhibit highly anisotropic mechanical strength and functionality to adapt to complex environments. In artificial soft materials, hydrogels are analogous to these biological soft tissues due to their “soft and wet” properties, their biocompatibility, and their elastic performance. However, conventional hydrogel materials with unordered homogeneous structures inevitably lack high mechanical properties and anisotropic functional performances; thus, their further application is limited. Inspired by biological soft tissues with well‐ordered structures, researchers have increasingly investigated highly ordered nanocomposite hydrogels as functional biological engineering soft materials with unique mechanical, optical, and biological properties. These hydrogels incorporate long‐range ordered nanocomposite structures within hydrogel network matrixes. Here, the critical design criteria and the state‐of‐the‐art fabrication strategies of nanocomposite hydrogels with highly ordered structures are systemically reviewed. Then, recent progress in applications in the fields of soft actuators, tissue engineering, and sensors is highlighted. The future development and prospective application of highly ordered nanocomposite hydrogels are also discussed.
Structure Formation in Soft‐Matter Solutions Induced by Solvent Evaporation
Authors: Zhou Jiajia , Man Xingkun , Jiang Ying , Doi Masao 
Published: October 2017

AbstractSolvent evaporation in soft‐matter solutions (solutions of colloidal particles, polymers, and their mixtures) is an important process in material making and in the printing and coating industries. The solvent‐evaporation process determines the structure of materials and strongly affects their performance. Solvent evaporation involves many physicochemical processes: flow, diffusion, crystallization, gelation, glass transition, etc. and is quite complex. Here, recent progress in this important process is reported, with a special focus on theoretical and simulation studies.
Gold Nanobipyramid‐Enhanced Hydrogen Sensing with Plasmon Red Shifts Reaching ≈140 nm at 2 vol% Hydrogen Concentration
Authors: Yip Hang Kuen , Zhu Xingzhong , Zhuo Xiaolu , Jiang Ruibin , Yang Zhi , Wang Jianfang 
Published: October 2017

AbstractPlasmonic sensors that make use of localized surface plasmon resonance provide an excellent platform for hydrogen sensing. In this work, large plasmonic red shifts are obtained on (Au nanobipyramid core)@(Pd shell) bimetallic nanostructures for hydrogen sensing. Au nanobipyramid@Pd nanostructures with different shell thicknesses are synthesized by varying the Pd precursor amount. The Au nanobipyramid@Pd nanostructures with thicker Pd shells are found to exhibit larger responses to hydrogen. The maximal plasmonic red shift reaches 97 nm at 4 vol% hydrogen concentration. The shell morphology of the Au nanobipyramid@Pd nanostructures is further optimized to improve the hydrogen sensing performance. With the optimized nanostructures, the maximal plasmonic red shift is improved to ≈140 nm at 2 vol% hydrogen concentration. Compared with the Au nanobipyramid@Pd nanostructures, Au nanobipyramid/AgPd nanostructures show smaller plasmonic red shifts under the same conditions. The highly enhanced plasmonic shifts and sensitivity to hydrogen make our Au nanobipyramid@Pd nanostructures highly promising for the development of optical hydrogen sensing devices.
Palladium‐Catalyzed Three‐Component Tandem Reaction for One‐pot Highly Stereoselective Synthesis of (Z)‐α‐Hydroxymethyl Allylic Sulfones
Authors: Hou Yunlei , Shen Qi , Li Zefei , Chen Shaowei , Zhao Yanfang , Qin Mingze , Gong Ping 
Published: October 2017

AbstractA novel method is reported for the stereoselective synthesis of highly functionalized allyl aryl sulfones. This protocol is based on a Pd‐catalyzed three‐component tandem reaction of sulfonyl hydrazides and aryl iodides with allenes and exhibits high (Z)‐selectivity, good yields, minimal waste, ample product scope, and operational simplicity.magnified image
Stereoelectroencephalography and surgical outcome in polymicrogyria‐related epilepsy: A multicentric study
Authors: Maillard Louis Georges , Tassi Laura , Bartolomei Fabrice , Catenoix Hélène , Dubeau François , Szurhaj William , Kahane Philippe , Nica Anca , Marusic Petr , Mindruta Ioana , Chassoux Francine , Ramantani Georgia 
Published: October 2017

ObjectiveWe aimed to (1) assess the concordance between various polymicrogyria (PMG) types and the associated epileptogenic zone (EZ), as defined by stereoelectroencephalography (SEEG), and (2) determine the postsurgical seizure outcome in PMG‐related drug‐resistant epilepsy.MethodsWe retrospectively analyzed 58 cases: 49 had SEEG and 39 corticectomy or hemispherotomy.ResultsMean age at SEEG or surgery was 28.3 years (range, 2–50). PMG was bilateral in 9 (16%) patients and unilateral in 49, including 17 (29%) unilobar, 12 (21%) multilobar, 15 (26%) perisylvian, and only 5 (9%) hemispheric. Twenty‐eight (48%) patients additionally had schizencephaly, heterotopia, or focal cortical dysplasia. The SEEG‐determined EZ was fully concordant with the PMG in only 8 (16%) cases, partially concordant in 74%, and discordant in 10%. The EZ included remote cortical areas in 21 (43%) cases and was primarily localized in those in 5 (10%), all related to the mesial temporal structures. All but 1 PMG patient with corticectomy or hemispherotomy had a unilateral PMG. At last follow‐up (mean, 4.6 years; range, 1–16), 28 (72%) patients remained seizure free. Shorter epilepsy duration to surgery was an independent predictor of seizure freedom.InterpretationPMG‐related drug‐resistant epilepsy warrants a comprehensive presurgical evaluation, including SEEG investigations in most cases, given that the EZ may only partially overlap with the PMG or include solely remote cortical areas. Seizure freedom is feasible in a large proportion of patients. PMG extent should not deter from exploring the possibility of epilepsy surgery. Our data support the early consideration of epilepsy surgery in this patient group. Ann Neurol 2017;82:781–794
Stimulation of the mesencephalic locomotor region for gait recovery after stroke
Authors: Fluri Felix , Malzahn Uwe , Homola György A. , Schuhmann Michael K. , Kleinschnitz Christoph , Volkmann Jens 
Published: October 2017

ObjectiveOne‐third of all stroke survivors are unable to walk, even after intensive physiotherapy. Thus, other concepts to restore walking are needed. Because electrical stimulation of the mesencephalic locomotor region (MLR) is known to elicit gait movements, this area might be a promising target for restorative neurostimulation in stroke patients with gait disability. The present study aims to delineate the effect of high‐frequency stimulation of the MLR (MLR‐HFS) on gait impairment in a rodent stroke model.MethodsMale Wistar rats underwent photothrombotic stroke of the right sensorimotor cortex and chronic implantation of a stimulating electrode into the right MLR. Gait was assessed using clinical scoring of the beam‐walking test and video‐kinematic analysis (CatWalk) at baseline and on days 3 and 4 after experimental stroke with and without MLR‐HFS.ResultsKinematic analysis revealed significant changes in several dynamic and static gait parameters resulting in overall reduced gait velocity. All rats exhibited major coordination deficits during the beam‐walking challenge and were unable to cross the beam. Simultaneous to the onset of MLR‐HFS, a significantly higher walking speed and improvements in several dynamic gait parameters were detected by the CatWalk system. Rats regained the ability to cross the beam unassisted, showing a reduced number of paw slips and misses.InterpretationMLR‐HFS can improve disordered locomotor function in a rodent stroke model. It may act by shielding brainstem and spinal locomotor centers from abnormal cortical input after stroke, thus allowing for compensatory and independent action of these circuits. Ann Neurol 2017;82:828–840
Microporous Cyclic Titanium‐Oxo Clusters with Labile Surface Ligands
Authors: Zhao Chaowei , Han Ying‐Zi , Dai Shuqi , Chen Xumao , Yan Juanzhu , Zhang Weijie , Su Haifeng , Lin Shuichao , Tang Zichao , Teo Boon K. , Zheng Nanfeng 
Published: October 2017

AbstractBy using ethylene glycol and monocarboxylic acid as surface ligands, a series of cyclic Ti‐oxo clusters (CTOC) with permanent microporosity are successfully synthesized. With a cyclic {Ti32O16} backbone made of eight connected Ti4 tetrahedral cages that are arranged in a zigzag fashion, the clusters have a “donut” shape with an inner diameter of 8.3 Å, outer diameter of 26.9 Å and height of 10.4 Å. While both inner and outer walls of the “donut” clusters are modified by double‐deprotonated ethylene glycolates, their upper and lower surfaces are bound by carboxylates and mono‐deprotonated ethylene glycolates. The clusters are readily packed into one‐dimensional tubes which are further arranged in two different modes into crystalline microporous solids with surface areas over 660 m2 g−1, depending on the surface carboxylates. The solid with olefin‐bearing carboxylates exhibits a superior CO2 adsorption capacity of 40 cm3 g−1 at 273 K under 1 atm. Moreover, the mono‐deprotonated ethylene glycolates on the clusters are demonstrated to be highly exchangeable by other alcohols, providing a nice platform for creating microporous solids or films with a wide variety of surface functionalities.
Understanding LiOH Chemistry in a Ruthenium‐Catalyzed Li–O2 Battery
Authors: Liu Tao , Liu Zigeng , Kim Gunwoo , Frith James T. , Garcia‐Araez Nuria , Grey Clare P. 
Published: October 2017

AbstractNon‐aqueous Li–O2 batteries are promising for next‐generation energy storage. New battery chemistries based on LiOH, rather than Li2O2, have been recently reported in systems with added water, one using a soluble additive LiI and the other using solid Ru catalysts. Here, the focus is on the mechanism of Ru‐catalyzed LiOH chemistry. Using nuclear magnetic resonance, operando electrochemical pressure measurements, and mass spectrometry, it is shown that on discharging LiOH forms via a 4 e− oxygen reduction reaction, the H in LiOH coming solely from added H2O and the O from both O2 and H2O. On charging, quantitative LiOH oxidation occurs at 3.1 V, with O being trapped in a form of dimethyl sulfone in the electrolyte. Compared to Li2O2, LiOH formation over Ru incurs few side reactions, a critical advantage for developing a long‐lived battery. An optimized metal‐catalyst–electrolyte couple needs to be sought that aids LiOH oxidation and is stable towards attack by hydroxyl radicals.
‘Somebody Else's Roadmap’: Lived Experience of Maudsley and Family‐based Therapy for Adolescent Anorexia Nervosa
Authors: Conti Janet , Calder Jamie , Cibralic Sara , Rhodes Paul , Meade Tanya , Hewson Daphne 
Published: October 2017

The Maudsley and more recent family‐based therapy manualised approaches are positioned by some as the gold standard, evidence‐based therapy for adolescent anorexia nervosa (AN). However, a significant proportion of adolescents and their families either discontinue this therapy and/or find that it simply does not work for them. These adolescents and families are under‐represented in the literature on therapeutic interventions for adolescent AN. This paper begins to address this gap with an in‐depth qualitative case study that explores the lived experience of Maudsley family therapy (MFT)/family‐based therapy (FBT) for one female adolescent (age 14 years) and her family over the period of 3 years (ages 11–14). Although initially handing over the responsibility for her eating was comforting and reinstated a sense of control in the family system, these experiences were not maintained. When she did not progress past the first phase of FBT, she and her family experienced the approach as blaming. She felt silenced and family alliances were weakened. This paper analyses how the family members negotiated and preserved their identities within this disabling context.
Facile synthesis of extremely biocompatible double‐network hydrogels based on chitosan and poly(vinyl alcohol) with enhanced mechanical properties
Authors: Pourjavadi Ali , Tavakoli Elham , Motamedi Anahita , Salimi Hamid 
Published: October 2017

ABSTRACTAn easy and ecofriendly method for designing double‐network (DN) hydrogels based on chitosan and poly(vinyl alcohol) (PVA) with high mechanical performance is described. When covalent bonds in the networks are used as crosslinking agents in the achievement of a higher mechanical strength, the irreversible deformation of these hydrogels after a large force is applied is still one of the most important obstacles. To overcome this problem, we used physical crosslinking for both networks. The mechanical strength, surface morphology, and cytotoxicity of the films were studied by tensile testing, scanning electron microscopy analysis, and an MTT assay. The synthesized chitosan–PVA DN hydrogels showed a large improvement in the tensile strength to 11.52 MPa with an elongation of 265.6%. The surface morphologies of the films demonstrated the effective interactions between the two networks and a suitable porosity. Also, because of the use of a natural polymer and honey as a plasticizer, the cell culture indicated that the synthesized DN hydrogels had good biocompatibility (with 327.49 ± 11.22% viability) and could be used as capable biomaterials. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45752.
pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition
Authors: Feng Lijuan , Yang Huaiyu , Dong Xiqing , Lei Haibo , Chen Di 
Published: October 2017

ABSTRACTThe waste problem of the rebar inhibitors is very serious due to that it is a long time before they can exert their best effect in the concrete and they are kept losing all the time. However, there is still no effective solution to alleviate such situation. Meanwhile, drug delivery control technology based on environmental sensitive polymers has been successfully applied in biomedical fields. Thus, poly(acrylic acid)–acrylamide was synthesized as smart carrier for controlling rebar inhibitors delivery in concrete. Dipotassium hydrogen phosphate as model drug was encapsulated inside the polymeric particles via a self‐assembly process. The pH‐responsive activities of the polymeric particles were estimated by monitoring their swelling performances in solutions of different pH values and the drug delivery control characteristics were studied in simulated concrete pore solutions. The results indicate the polymeric particles deserve network structures with high porosity and exhibit excellent pH‐responsive activities, which can perform as perfect intelligent carriers whereas the releasing of the inhibitors follows the first‐order kinetic law. The work suggests a new application field of drug delivery control technology. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45886.
The First Record of Incidences of Ankylosis in Seven Triplefin Fishes (Pisces: Tripterygiidae) from New Zealand
Authors: Jawad Laith A. 
Published: October 2017

ABSTRACTDifferent cases of vertebral ankylosis were examined in seven tripterygiid species obtained from waters around New Zealand. The skeletal deformities observed are located in the caudal region of the vertebral column. Those occurred in Forsterygion nigripenne, Matanui bathytaton and in one specimen of Ruanoho whero were severe cases. The mechanism of the formation of vertebral ankylosis and the causes behind such anomaly were discussed. Further studies are needed to relate specific pollutants with the observed types of deformities. Anat Rec, 2017. © 2017 Wiley Periodicals, Inc. Anat Rec, 301:39–45, 2018. © 2017 Wiley Periodicals, Inc.
Proposal for biorefineries based on mixed cultures for lignocellulosic biofuel production: a techno‐economic analysis
Authors: Valdez‐Vazquez Idania , Sanchez Arturo 
Published: October 2017

AbstractAn innovative conceptual design is introduced for lignocellulosic‐based biochemical platform biorefineries using three mixed‐culture bioprocesses that sequentially disintegrate each polysaccharide fraction into different target biofuels: hydrogen, methane, and fuel butanol. This mixed‐culture biorefinery circumvents the use of corrosive chemicals, energy‐demanding pre‐treatments, costly enzymes, separate units for saccharification and fermentation, steam for sterilization, and expensive steel bioreactors. The concept mimics bioprocesses occurring in nature to degrade complex substrates. A techno‐economic analysis of these biorefineries is carried out focusing on the impact of residence times (8–120 h) and butanol titers (10–20 g/L) of the production of acetone‐butanol‐ethanol (ABE) on the total production costs (TPC) of butanol. The design includes electricity‐steam cogeneration from gaseous biofuels and lignin, as well as solvent purification. Simulation results show that the highest butanol titer impacts TPC to a greater extent than the lowest residence time. TPC range from US$1.04 to US$1.27 per liter of butanol in facilities with 20 g/L of butanol irrespective of residence time. The end‐use energy ratio for all facilities was close to 2 or higher. These biorefineries display lower energy consumption and environmental impacts than conventional second‐generation lignocellulosic biofuels biorefineries, and its cost structure is determined by the substrate similar to bioprocesses with mature technology. Finally, this study provides an insight to the advancements made in realizing viable mixed‐culture fermentations for different fields of biotechnology and therefore might be encouraging for further studies of lignocellulosic biorefineries based on mixed cultures. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd
Highly Efficient Oxidation of Amines to Aldehydes with Flow‐based Biocatalysis
Authors: Contente Martina L. , Dall'Oglio Federica , Tamborini Lucia , Molinari Francesco , Paradisi Francesca 
Published: October 2017

AbstractThe front cover artwork for Issue 20/2017 is a collaboration between the University of Nottingham (UK) and the University of Milan (Italy). The image shows the ease of production of a range of aldehydes in continuous flow through an efficient enzymatic oxidation with minimal waste and in an environmentally friendly manner. See the Full Paper itself at https://doi.org/10.1002/cctc.201701147.
Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO2Separation from N2and CH4
Authors: Mubashir Muhammad , Fong Yeong Yin , Leng Chew Thiam , Keong Lau Kok 
Published: October 2017

AbstractTo control CO2emission from industries, membrane technology is preferred over conventional technologies due to its numerous advantages including reliability, operational simplicity, and low capital cost. Hollow‐fiber mixed‐matrix membranes (HFMMMs) exhibit great potential for CO2separation. Various inorganic fillers were incorporated into different types of polymeric materials for fabrication of HFMMMs. This review focuses on the performance and issues of HFMMMS based on various materials for CO2/CH4and CO2/N2separation. Major features are reflected in the following three aspects: comprehensive study on the performance of HFMMMs for CO2/N2and CO2/CH4separation, issues with the fabrication of HFMMMs in CO2/N2and CO2/CH4separation, and prediction of transport models for HFMMMs in gas separation.
Hybrid central composite design for simultaneous optimization of removal of methylene blue and alizarin red S from aqueous solutions using Vitis tree leaves
Authors: Bagtash Maryam , Zolgharnein Javad 
Published: October 2017

AbstractVitis tree leaves powder was used for efficient removal of dyes (eg, alizarin red and methylene blue) from water samples in binary batch systems. The influence of various parameters such as initial pH, initial dye concentration, and sorbent mass on the biosorption process was investigated. Statistical experimental design was utilized to optimize this biosorption process. A regression model was derived using a response surface methodology through performing the 416B model of hybrid central composite design. Model adequacy was checked by means of tests such as analysis of variance, a lack of fit test, and residual distribution consideration. The proposed quadratic model resulted from the hybrid design approach fitted very well to the experimental data. The optimal conditions for dye biosorption were as follows: pH = 3.0, sorbent mass = 0.05 g, initial alizarin red concentration (CAR) = 999.6 mg L−1 and initial methylene blue concentration (CMB) = 878.5 mg L−1. Evaluation of biosorption data with Langmuir and Freundlich isotherms shows that the Langmuir model indicated the best fit to the equilibrium data with maximum adsorption capacity of 66.4 and 53.5 mg g−1 in single system and 54.6 and 43.9 mg g−1 in binary system for AR and MB, respectively. Moreover, kinetics of the biosorption process was also investigated.
Recent Progress in the Surface Modification of Photoelectrodes toward Efficient and Stable Overall Water Splitting
Authors: Kaneko Hiroyuki , Minegishi Tsutomu , Domen Kazunari 
Published: October 2017

AbstractPhotoelectrochemical (PEC) water splitting using a combination of a photocathode and photoanode is one of the most promising methods of producing hydrogen from water employing sunlight. Recent reports have shown that surface modification of the photoelectrodes dramatically improves their PEC performance. Bare photoelectrodes often exhibit insufficient depletion regions, undesired surface states and/or degradation due to photocorrosion. It has been demonstrated that surface modifications can tune the flat‐band potentials, band‐edge potentials, surface states and chemical stabilities of these electrodes and thus improve quantum efficiency, onset potential and durability. This review describes in detail the various surface modification materials that have been developed to date, and the functions of these modifiers. This information is expected to provide guidelines for the future development of photoelectrodes capable of highly efficient and stable PEC water splitting.
Recent Advances in Functional Polymer Decorated Two‐Dimensional Transition‐Metal Dichalcogenides Nanomaterials for Chemo‐Photothermal Therapy
Authors: Zhang Aitang , Li Aihua , Zhao Wei , Liu Jingquan 
Published: October 2017

AbstractNovel nanomaterials and advanced nanotechnologies continue to promote the fast development of new approaches for efficient tumor therapy. As an alternative choice to various traditional therapies, non‐invasive photothermal therapy (PTT) has attracted significant attention mainly due to its low cost, highly localizing, specific tumor treatment and minimal side effects on healthy tissues. PTT induced by photo‐absorbing agents which can absorb and convert the external NIR laser into heat to ablate tumors. Plenty of studies have shown the significant potential of PTT to treat tumors in future practical applications. However, PTT alone usually could not eradicate tumors considering the intensity of laser gradual attenuates in biological tissues and the heat generated tends to distribute inhomogeneous within tumors tissues. Combination of chemotherapy with photothermal therapy into one system for tumor therapy is an effective strategy to further improve the therapy efficiency. In this Minireview, we focus on the recent advances in constructing PTT therapeutic and multi‐model combination therapeutic via integrating nanomaterials and functional polymers.