bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of entangled state of nascent UHMWPE on structural and mechanical properties of HDPE/UHMWPE blends
Authors: Yang Huaqin , Hui Lei , Zhang Jingjing , Chen Peng , Li Wei 
Published: January 2017

ABSTRACTIn this study, a synthesized ultra‐high molecular weight polyethylene (UHMWPE) with a less entangled state and a commercial UHMWPE with a highly entangled state were blended with high‐density polyethylene (HDPE) by melt blending, respectively. Rheology, 2D small‐angle X‐ray scattering (2D‐SAXS), differential scanning calorimetry (DSC), and tensile test were used to study the relationship between the microstructure and the mechanical properties of blends. It was demonstrated that the UHMWPE with the less entangled state was easy to be oriented at a given flow. More mechanical networks were achieved among the HDPE matrix and the UHMWPE chains due to the fewer entanglements of synthesized UHMWPE, improving the melting recovery of blends. Furthermore, notably oriented structures (shish‐kebabs) with increased long‐periods were made in the blends of weakly entangled UHMWPE and HDPE. The tensile strength of this blend was thus enhanced, i.e., the tensile strength raised for neat HDPE from 45.7 to 83.1 MPa for HDPE/UHMWPE blends containing 10 wt % of less entangled UHMWPE. However, the phase separation of blends was characterized when more weakly entangled UHMWPE was incorporated. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44728.
Soft and flexible conductive PDMS/MWCNT composites
Authors: Hassouneh Suzan S. , Yu Liyun , Skov Anne L. , Daugaard Anders E. 
Published: January 2017

ABSTRACTConductive elastomers based on MWCNT in polydimethylsiloxane (PDMS) have been prepared by a range of dispersion methods such as ultrasonication, speedmixing and roll milling in combination with physical or covalent modification. The ionic liquid (IL), 1‐ethyl‐3‐methylimidazolium bis(trifluoromethanesulfonyl)imide, was used to pre‐disperse MWCNT in a MWCNT/IL‐gel that was used for preparation of MWCVNT/PDMS composites. The method was seen to be effective at low levels of MWCNT, but required combination with a roll mill to obtain a stable dispersion at 4 wt % MWCNT. With higher amounts of MWCNT a reduction in conductivity was observed, which was attributed to a change in morphology occurring between 4 and 5 wt % MWCNT. As an alternative to IL dispersing aids a novel functionalized MWCNT was prepared by free radical polymerization using α‐methacryloxypropyl‐polydimethylsiloxane, which could be used directly for preparation of MWCNT/PDMS composites. Composites prepared by use of the IL dispersion method, use of a roll mill or by use of the f‐MWCNT all had conductivities around 0.005–0.01 s/cm and retained conductivity upon extension. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44767.
Synergistic effects of crosslinking and chitosan molecular weight on the microstructure, molecular mobility, thermal and sorption properties of porous chitosan/gelatin/hyaluronic acid scaffolds
Authors: Acevedo Cristian A. , Sánchez Elizabeth , Díaz‐Calderón Paulo , Blaker Jonny J. , Enrione Javier , Quero Franck 
Published: January 2017

ABSTRACTIn this study, synergistic effects of crosslinking and chitosan molecular weight on the microstructure, molecular mobility, thermal, and sorption properties of porous chitosan/gelatin/hyaluronic acid hybrid foams are reported. Fourier transform infrared spectroscopy has been utilized to confirm the covalent attachment of hyaluronic acid to gelatin and chitosan, and covalent chemical crosslinking between gelatin and chitosan. Detailed image analysis of scanning electron microscopy images of the porous scaffold hydrids reveal that the pore size of the materials formulated using either low‐ or high‐molecular‐weight chitosan increases significantly upon crosslinking using ethyl(dimethylaminopropyl) carbodiimide/N‐Hydroxysuccinimide. These microstructural changes are even more pronounced for the crosslinked hybrid scaffolds formulated using low‐molecular‐weight chitosan, highlighting a synergistic effect between crosslinking and the use of low‐molecular‐weight chitosan. Results obtained using differential scanning calorimetry demonstrate a significant reduction in molecular mobility reduction in molecular mobility for crosslinked scaffolds formed using high‐molecular‐weight chitosan compared to non‐crosslinked hybrids and crosslinked hybrids formulated using low‐molecular‐weight chitosan. Correspondingly, dynamic vapor sorption evidenced significantly lower water vapor sorption for crosslinked scaffolds formulated using high‐molecular‐weight chitosan. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44772.
Electrical, mechanical, and piezoresistive properties of carbon nanotube–polyaniline hybrid filled polydimethylsiloxane composites
Authors: Leyva Egurrola Saul , del Castillo Castro Teresa , Castillo Ortega María Mónica , Encinas José Carmelo , Herrera Franco Pedro Jesús , Bonilla Cruz José , Lara Ceniceros Tania E. 
Published: January 2017

ABSTRACTThe electrical, mechanical, and piezoresistive properties of ternary composites based on elastomeric polydimethylsiloxane (PDMS), carbon nanotubes (CNTs), and polyaniline (PANI) were studied and compared with those of binary PDMS–CNT composites. The presence of PANI affected the percolating network of the CNTs. At lower PANI concentrations (2.5 and 5%), the conductive network of the CNTs was constructively modified; this led to an enhancement in the conductivity in the sample containing 2% CNTs. A higher PANI content (7.5%) hindered the flow of main charge carriers through the composite. The piezoresistive response of the binary and ternary composites was studied by cyclic experiments under compression loads. In all of the samples, the electrical resistance increased monotonically up to a 10% strain. The reproducibility of the piezoresistive behavior in the binary and ternary composites provided evidence that the fillers could reversibly recover their initial position together with the PDMS chains without a significant displacement with respect to their original positions. The reduction of the piezoresistive sensibility by PANI addition was attributed to the displacement restrictions of the CNTs within the composite under pressure because of the volume exclusion of PANI particles; this maintained the probability of CNT contact and increased the possibility of the formation of new CNT conductive channels. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44780.
Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu2O nanoparticles using diethanolamine
Authors: Rezaie Ali Bashiri , Montazer Majid 
Published: January 2017

ABSTRACTIn this research, polyester fabric was modified through in situ synthesis of Cu/Cu2O nanoparticles (NPs) in one single step processing using diethanolamine. This introduced amide and hydroxyl active groups on the polyester surface, adjusted pH, aminolyzed, and improved the surface activity of polyester. Copper sulfate was used as precursor, sodium hypophosphite as a reducing agent and polyvinylpyrrolidone as a stabilizer in a chemical reduction route at boil as a facile and cost‐effective approach. The central composite design was also utilized to optimize the processing conditions and study the effect of each variables on the weight gain, color change, and wettability of the treated fabrics. FESEM and mapping, EDX, XRD, and FTIR analysis confirmed effective assembling of Cu/Cu2O NPs on the amidohydroxylated polyester surface. The optimum treated fabric showed excellent antibacterial properties on both Staphylococcus aureus and Escherichia coli. In addition, a very good photocatalytic activity towards degradation of methylene blue solution obtained after 24 h sunlight irradiation. Further, the hydrophilicity, mechanical properties and stability of the treated fabrics in concentrated sodium hydroxide improved through formation of amidohydroxyl active groups, amidoester cross‐linking and nanocross‐linking within polymeric chains through in situ synthesis of Cu/Cu2O. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44856.
Efficacy and Safety of Subcutaneous Belimumab in Systemic Lupus Erythematosus: A Fifty‐Two–Week Randomized, Double‐Blind, Placebo‐Controlled Study
Authors: Stohl William , Schwarting Andreas , Okada Masato , Scheinberg Morton , Doria Andrea , Hammer Anne E. , Kleoudis Christi , Groark James , Bass Damon , Fox Norma Lynn , Roth David , Gordon David 
Published: January 2017

ObjectiveTo assess the efficacy and safety of subcutaneous (SC) belimumab in patients with systemic lupus erythematosus (SLE).MethodsPatients with moderate‐to‐severe SLE (score of ≥8 on the Safety of Estrogens in Lupus Erythematosus National Assessment [SELENA] version of the SLE Disease Activity Index [SLEDAI]) were randomized 2:1 to receive weekly SC belimumab 200 mg or placebo by prefilled syringe in addition to standard SLE therapy for 52 weeks. The primary end point was the SLE Responder Index (SRI4) at week 52. Secondary end points were reduction in the corticosteroid dosage and time to severe flare. Safety was assessed according to the adverse events (AEs) reported and the laboratory test results.ResultsOf 839 patients randomized, 836 (556 in the belimumab group and 280 in the placebo group) received treatment. A total of 159 patients withdrew before the end of the study. At entry, mean SELENA–SLEDAI scores were 10.5 in the belimumab group and 10.3 in the placebo group. More patients who received belimumab were SRI4 responders than those who received placebo (61.4% versus 48.4%; odds ratio [OR] 1.68 [95% confidence interval (95% CI) 1.25–2.25]; P = 0.0006). In the belimumab group, both time to and risk of severe flare were improved (median 171.0 days versus 118.0 days; hazard ratio 0.51 [95% CI 0.35–0.74]; P = 0.0004), and more patients were able to reduce their corticosteroid dosage by ≥25% (to ≤7.5 mg/day) during weeks 40–52 (18.2% versus 11.9%; OR 1.65 [95% CI 0.95–2.84]; P = 0.0732), compared with placebo. AE incidence was comparable between treatment groups; serious AEs were reported by 10.8% of patients taking belimumab and 15.7% of those taking placebo. A worsening of IgG hypoglobulinemia by ≥2 grades occurred in 0.9% of patients taking belimumab and 1.4% of those taking placebo.ConclusionIn patients with moderate‐to‐severe SLE, weekly SC doses of belimumab 200 mg plus standard SLE therapy significantly improved their SRI4 response, decreased severe disease flares as compared with placebo, and had a safety profile similar to placebo plus standard SLE therapy.
Synthesis, Physical Properties and Memory Device Application of a Twelve‐Ring Fused Twistheteroacene
Authors: Duan Jingdan , Gu Pei‐yang , Xiao Jinchong , Shen Xingxing , Liu Xiaoyu , Yi Yuanping , Zhang Qichun 
Published: January 2017

AbstractDeveloping new organic conjugated materials for high density memory devices is highly desirable. In this research, a novel donor–acceptor‐type twelve‐ring fused twistheteroacene, 2,7,19,24‐tetra‐tert‐butyl‐13,30‐didodecyl‐9,17,26,34‐tetraphenyl benzo[8′,9′]triphenyleno[2′,3′:7,8]dibenzo[b,e][1,4]dioxino[1,2,3,4‐lmn]dibenzo[6′,7′:10′,11′]tetraceno[2′,3′:5,6][1,4]dioxino[2,3‐f][3,8]phenanthroline‐12,14,29,31(13H,30H)‐tetraone (DPyN) has been synthesized and characterized. It displays high thermal stability, possesses a broad absorption band centered at 510 and 538 nm, and emits red fluorescence in organic solvents. A solution‐processed memory device with DPyN as an active element shows an excellent memory performance with an ON/OFF current ratio of 103.46:1 and a threshold voltage of −2.44 V.
Evaluating elevated convection with the downdraft convective inhibition
Authors: Market P. S. , Rochette S. M. , Shewchuk J. , Difani R. , Kastman J. S. , Henson C. B. , Fox N. I. 
Published: January 2017

AbstractA method for evaluating the penetration of a stable layer by an elevated convective downdraft is discussed. Some controversy exists on the community's ability to define truly elevated convection from surface‐based convection. By comparing the downdraft convective inhibition (DCIN) to the downdraft convective available potential energy (DCAPE), we determine that downdraft penetration potential is progressively enabled as the DCIN is progressively smaller than the DCAPE; inversely as DCIN increases over DCAPE, so does the likelihood of purely elevated convection. Serial vertical soundings and accompanying analyses are provided to support this finding.
Synthesis and luminescence properties of blue‐emitting phosphor Ca12Al14O32F2:Eu2+ for white light‐emitting diode
Authors: Chen Wanping , Zhang Xinzhu , Wang Liping 
Published: January 2017

AbstractA blue‐emitting phosphor Ca12Al14O32F2:Eu2+ was synthesized using a high‐temperature solid‐state reaction under a reductive atmosphere. The X‐ray diffraction measurements indicate that a pure phase Ca12Al14O32F2:Eu2+ can be obtained for low doping concentration of Eu2+. The phosphor has a strong absorption in the range 270–420 nm with a maximum at ~340 nm and blue emission in the range 400–500 nm with chromatic coordination of (0.152, 0.045). The optimal doping concentration is ~0.24. In addition, the luminescence properties of the as‐synthesized phosphor were evaluated by comparison with those of Ca12Al14O32Cl2:Eu2+ and the commercially available phosphor BaMgAl10O17:Eu2+. The emission intensity of Ca12Al14O32F2:Eu2+ was ~72% that of BaMgAl10O17:Eu2+ under excitation at λ = 375 nm. The results indicate that Ca12Al14O32F2:Eu2+ has potential application as a near‐UV‐convertible blue phosphor for white light‐emitting diodes.
Deciphering the intercalative binding modes of benzoyl peroxide with calf thymus DNA
Authors: Xia Kaixin , Zhang Guowen , Gong Deming 
Published: January 2017

AbstractThe binding of benzoyl peroxide (BPO), a flour brightener, with calf thymus DNA (ctDNA) was predicted by molecular simulation, and this were confirmed using multi‐spectroscopic techniques and a chemometrics algorithm. The molecular docking result showed that BPO could insert into the base pairs of ctDNA, and the adenine bases were the preferential binding sites which were validated by the analysis of Fourier transform infrared spectra. The mode of binding of BPO with ctDNA was an intercalation as supported by the results from ctDNA melting and viscosity measurements, iodide quenching effects and competitive binding investigations. The circular dichroism and DNA cleavage assays indicated that BPO induced a conformational change from B‐like DNA structure towards to A‐like form, but did not lead to significant damage in the DNA. The complexation was driven mainly by hydrogen bonds and hydrophobic interactions. Moreover, the ultraviolet–visible (UV–vis) spectroscopic data matrix was resolved by a multivariate curve resolution–alternating least–squares algorithm. The equilibrium concentration profiles for the components (BPO, ctDNA and BPO–ctDNA complex) were extracted from the highly overlapping composite response to quantitatively monitor the BPO–ctDNA interaction. This study has provided insights into the mechanism of the interaction of BPO with ctDNA and potential hazards of the food additive.
The Healthy Eating, Active Living (HEAL) Study: Outcomes, Lessons Learnt and Future Recommendations
Authors: Cox Rachael , Skouteris Helen , Fuller‐Tyszkiewicz Matthew , Watson Brittany , Jones Amanda D. , Omerogullari Stella , Stanton Kelly , Bromfield Leah , Hardy Louise L. 
Published: January 2017

Internationally, there are few interventions that promote healthy lifestyles in the out‐of‐home care (OOHC) sector. The aim of this quantitative study was to measure the efficacy of the Healthy Eating, Active Living (HEAL) programme for young people who live in residential OOHC and their carers. Seventy young people and 177 carers were recruited between August 2012 and October 2014 from 48 residential care units across metropolitan Melbourne and regional Victoria, Australia. The HEAL programme included educational sessions for young people, and professional development for carers to foster healthy eating and physical activity. Young people and carers completed questionnaires measuring behavioural, psychosocial and motivational outcomes. Objective measures of height and weight were collected for young people and self‐reported by carers. The findings revealed no evidence for the efficacy of the HEAL intervention for either young people or carers. The most likely explanation for the null result was difficulties associated with: (1) collecting quantitative data for evaluative purposes in vulnerable populations (particularly the impact of attrition on statistical power); and (2) implementing interventions in complex environments. We conclude with a summary of lessons learnt and recommendations for future research in this unique setting. Copyright © 2017 John Wiley & Sons, Ltd.‘Quantitative study… to measure the efficacy of the HEAL programme for young people who live in residential OOHC and their carers’Key Practitioner Messages

There are a number of challenges inherent to collecting longitudinal data and/or employing a randomised trial design in this setting. Researchers working in this area need to acknowledge the critical need for this type of research but also consider alternative approaches to data collection.
It is integral that organisational practices and/or policies are in place so that a HEAL philosophy is embedded in the residential OOHC culture; in other words, HEAL becomes a part of each organisation's values, goals and shared expectations.
Acyl Histidines: New N‐Acyl Amides from Legionella pneumophila
Authors: Tørring Thomas , Shames Stephanie R. , Cho Wooyoung , Roy Craig R. , Crawford Jason M. 
Published: January 2017

AbstractLegionella pneumophila, the causative agent of Legionnaires' disease, is a Gram‐negative gammaproteobacterial pathogen that infects and intracellularly replicates in human macrophages and a variety of protozoa. L. pneumophila encodes an orphan biosynthetic gene cluster (BGC) that contains isocyanide‐associated biosynthetic genes and is upregulated during infection. Because isocyanide‐functionalized metabolites are known to harbor invertebrate innate immunosuppressive activities in bacterial pathogen–insect interactions, we used pathway‐targeted molecular networking and tetrazine‐based chemoseletive ligation chemistry to characterize the metabolites from the orphan pathway in L. pneumophila. We also assessed their intracellular growth contributions in an amoeba and in murine bone‐marrow‐derived macrophages. Unexpectedly, two distinct groups of aromatic amino acid‐derived metabolites were identified from the pathway, including a known tyrosine‐derived isocyanide and a family of new N‐acyl‐l‐histidine metabolites.
Double‐stenting in distal left main lesions: Let's crush
Authors: Belardi Jorge A. , Albertal Mariano 
Published: January 2017

Key Points

Unprotected distal left main (ULM) lesions often require double‐stenting.
In the MITO Registry, a mini‐crush stenting technique was safer than culotte stenting.
Performing mini‐crush arises as the best approach in patients with distal ULM lesions requiring elective double‐stenting.
Photocatalytic Hydrogen Production: A Rift into the Future Energy Supply
Authors: Christoforidis Konstantinos C. , Fornasiero Paolo 
Published: January 2017

AbstractPhotocatalytic hydrogen (H2) production is a process that converts solar energy into chemical energy by means of a suitable photocatalyst. After the huge amount of systems that have been tested in the last forty years, the advent of nanotechnology and a careful design at molecular level, allow to obtain attractive activity, even using pure visible light. At the same time we are approaching reasonable photocatalyst stability in laboratory test, and the attention is paid to identify cost‐effective photocatalysts that might find real applications. This Review provides a broad overview of the elementary steps of the heterogeneous photocatalytic H2 production, including an outline of the physico‐chemical reactions occurring on semiconductors and cocatalysts. The use of different renewable oxygenates as sustainable sacrificial agent for the H2 production is outlined, in view of a transition from fossil fuels to pure water splitting. Finally, the recent advances in the development of photocatalyst are discussed focusing on the current progress in organic and hybrid organic/inorganic photocatalysts.
Spherical Boron Nitride Supported Gold–Copper Catalysts for the Low‐Temperature Selective Oxidation of Ethanol
Authors: Wang Yang , Shi Lei , Lu Wenduo , Sun Qiang , Wang Zifeng , Zhi Chunyi , Lu An‐Hui 
Published: January 2017

AbstractThe oxidation of ethanol to acetaldehyde in the fine‐chemical industry is a burgeoning process that requires leading‐edge technology. A major challenge is to find a catalyst with high ethanol conversion and high acetaldehyde selectivity at a high gas hourly space velocity (GHSV) and a low operation temperature. Boron nitride nanosphere supported Au–Cu nanoparticles offer much opportunity for low‐temperature ethanol oxidation. A catalytic ethanol conversion of 77 % and a selectivity of 94 % towards acetaldehyde were achieved at a temperature of 180 °C and a high GHSV of 100 000 mL gcat−1 h−1, values that far exceed those obtained with Au–Cu/SiO2. The immobilized Au–Cu nanoparticles have an average size of approximately 3 nm, and the majority of Au species are assigned Auδ−. The weak interaction of acetaldehyde with both Au–Cu active phases and the boron nitride support facilitates the adsorption–desorption behavior of acetaldehyde. As a result, the progression of secondary reactions is slowed and the degree of coverage of the active sites is minimized.
Electrochemical Detection of 2,4‐Dichlorophenol on a Ternary Composite Electrode of Diamond, Graphene, and Polyaniline
Authors: Peleyeju Moses G. , Idris Azeez O. , Umukoro Eseoghene H. , Babalola Jonathan O. , Arotiba Omotayo A. 
Published: January 2017

AbstractIn this work, a novel ternary composite electrode made from diamond, graphene, and polyaniline was prepared, characterized, and applied for the electrochemical determination of 2,4‐dichlorophenol (2,4‐DCP) in aqueous media. The composite obtained through oxidative polymerization of aniline in the presence of graphene and diamond was characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, X‐ray diffraction, and Brunauer−Emmett−Teller surface area analysis. A glassy carbon electrode (GCE) was modified with the composite material and the electrochemical properties of the bare and modified electrodes were investigated by using cyclic voltammetry, square wave voltammetry, and electrochemical impedance spectroscopy. The obtained results show that the modified electrode exhibits superior electrochemical properties to the bare GCE. Determination of 2,4‐DCP in 0.1 M HNO3 was carried out by using square wave voltammetry, and the oxidation peak of the analyte was found to increase linearly with increasing concentration. The linear regression equation was
and the detection limit was calculated to be 0.25 μM. The electrode exhibited antifouling capabilities during the electro‐oxidation of 2,4‐DCP. The sensor was utilized for the detection of 2,4‐DCP in domestic wastewater and it is believed to hold promise for practical applications.