bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Amorphous Noble‐Metal‐Free Electrocatalyst that Enables Nitrogen Fixation under Ambient Conditions
Authors: Lv Chade , Yan Chunshuang , Chen Gang , Ding Yu , Sun Jingxue , Zhou Yansong , Yu Guihua 
Published: February 2018

AbstractN2 fixation by the electrocatalytic nitrogen reduction reaction (NRR) under ambient conditions is regarded as a potential approach to achieve NH3 production, which still heavily relies on the Haber–Bosch process at the cost of huge energy and massive production of CO2. A noble‐metal‐free Bi4V2O11/CeO2 hybrid with an amorphous phase (BVC‐A) is used as the cathode for electrocatalytic NRR. The amorphous Bi4V2O11 contains significant defects, which play a role as active sites. The CeO2 not only serves as a trigger to induce the amorphous structure, but also establishes band alignment with Bi4V2O11 for rapid interfacial charge transfer. Remarkably, BVC‐A shows outstanding electrocatalytic NRR performance with high average yield (NH3: 23.21 μg h−1 mg−1cat., Faradaic efficiency: 10.16 %) under ambient conditions, which is superior to the Bi4V2O11/CeO2 hybrid with crystalline phase (BVC‐C) counterpart.
Synthesis and characterization of lignin–poly(acrylamide)–poly(2‐methacryloyloxyethyl) trimethyl ammonium chloride copolymer
Authors: Hasan Agha , Fatehi Pedram 
Published: February 2018

ABSTRACTIn this work, two monomers, acrylamide (AM) and [2‐(methacryloyloxy)ethyl]trimethylammonium chloride (DMC) were copolymerized from kraft lignin (KL) in an aqueous suspension initiated by free radical copolymerization in the presence of potassium persulfate. The impact of copolymerization conditions on the charge density and molecular weight of the copolymers was investigated. The molecular weight and mass balance analyses confirmed that the homopolymer [polyDMC (PDMC) and polyAM (PAM)] and undesired copolymer (AM–DMC) productions dominated as time, initiator, and DMC dosage increased more than the optimum values. The activation energy of the polymerization of KL and AM (43.02 kJ mol−1), KL and DMC (21.99 kJ mol−1), AM (14.54 kJ mol−1), DMC (10.34 kJ mol−1), and AM and DMC (18.13 kJ mol−1) was determined. Proton nuclear magnetic resonance, Fourier transform infrared spectroscopy, thermogravimetric analysis, and elemental analysis confirmed the production of KL–AM–DMC copolymer. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46338.
Simultaneously reinforcing and toughening epoxy network with a novel hyperbranched polysiloxane modifier
Authors: Liu Hanchao , Gao Xiaoxiao , Deng Bo , Huang Guangsu 
Published: February 2018

ABSTRACTA novel hyperbranched polysiloxane (HBPSi) was prepared and cured into an epoxy–aromatic amine network without phase separation. A moderate content of HBPSi increased the crosslinking density of the crosslinking network because of the active amino groups on the HBPSi. Meanwhile, the secondary amine on the HBPSi molecules improved the homogeneity of the epoxy network. At a 5 wt % HBPSi content, the tensile strength, tensile modulus, and flexural modulus were enhanced by 17.6%, 13.7%, and 17.5%, respectively, compared with those of the neat epoxy resin. Meanwhile, the elongation at break and impact strength were 63.3% and 49.1% higher than those of the neat epoxy resin, respectively. HBPSi also significantly increased the char yield of the material and decreased the thermal weight loss rate; this indicated an improved thermal stability. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46340.
Facile preparation and characterization of soluble aramid
Authors: Zhou Sheng , Wang Xiaolu , Zhang Wei , Zhang Mengyao , Zhang Xiaoli , Zhao Ning , Liu Ruigang , Xu Jian , Shen Zhihao , Fan Xinghe 
Published: February 2018

ABSTRACTIt remains a problem to prepare cost‐effective aramid with good solubility via a simple method since the commercialization of aromatic polyamides such as Kevlar and Nomex by DuPont in 1960s. Herein, we report the facile preparation and properties of an aromatic polyamide copolymerized by 2,6‐naphthalene dichloride (26N‐COCl), 4,4′‐oxydianiline, and m‐phenylenediamine. The synthetic route is very facile and cost‐effective. The modified aramids possess excellent comprehensive properties. The polymers are soluble in some organics. Their thermal stabilities are excellent, with 5% weight loss temperatures (Td,5%'s) in air higher than 460 °C and glass transition temperatures (Tg's) higher than 280 °C. These polymers are easily processed into films, fibers, and tubes. The products exhibit high strength. For example, the films have excellent mechanical strength, with a tensile strength up to 139 MPa, a tensile modulus up to 3.45 GPa, and an elongation of 11%. The films are also transparent and fluorescent. The overall properties are better than those of the commercial Nomex. The facilely prepared aramids with good solubility are very promising for commercial use. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46341.
Preparation, analysis, and isothermal crystallization behavior of poly[1,3‐bis(aminomethyl)cyclohexamethylene oxamide]
Authors: Mutua Fredrick Nzioka , Yang Tingting , Gao Yuanbo , Zhu Bo , He Yong 
Published: February 2018

ABSTRACTPoly[1,3‐bis(aminomethyl)cyclohexaneoxamide] (PBAC2) was synthesized using 1,3‐bis(aminomethyl)cyclohexane (BAC) and dibutyl oxalate (DO) via spray/solid‐state polycondensation (SSP). The structure of the synthesized polyoxamide was confirmed by 1H‐nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy. The weight average molecular weight (Mw) of the polyoxamides prepared was 1.35 × 105. The polyoxamides showed excellent thermal properties with glass transition temperature (Tg) of 150 °C, melting temperature (Tm) of 318 °C, crystallization temperature(Tc) of 253 °C, and initial degradation temperature (Td) of 417 °C suggesting higher thermal stability than commercial polyamide 6 (Td = 378 °C). Kinetic studies of PBAC2 predicted a two‐dimensional crystal growth. X‐ray diffraction powder diffraction suggested that the polymer has high crystallinity. A saturated water absorption of 2.8 wt % was recorded for the new polyoxamide, giving it a competitive edge for applications in civil aviation, reinforced plastics, and electronics industry where precise dimensional stability and high thermal resistance properties are a priority. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46345.
Preparation of acrylamide‐based poly‐HIPEs with enhanced mechanical strength using PVDBM‐b‐PEG‐emulsified CO2‐in‐water emulsions
Authors: Wang Liwen , Liu Yongjia , Bao Lei , Hu Dongdong , Zong Yuan , Tong Gangsheng , Zhao Ling , Liu Tao 
Published: February 2018

ABSTRACTPoly(vinyl acetate‐alt‐dibutyl maleate)‐block‐poly(ethylene glycol) (PVDBM‐b‐PEG) copolymers were synthesized via reversible addition–fragmentation chain transfer radical polymerization and used as emulsifiers to form stable CO2‐in‐water high internal phase emulsions (C/W HIPEs). Then, highly interconnected cellular polyacrylamide (PAM) and poly(acrylamide‐co‐N‐hydroxymethyl acrylamide) [P(AM‐co‐HMAM)] poly‐HIPEs with enhanced mechanical strength were prepared based on the stable C/W HIPEs. The porous structures of the PAM poly‐HIPEs, as well as morphology and compressive modulus, could be influenced by the surfactant concentration and the length of the CO2‐philic tails of the surfactants. PAM poly‐HIPEs with the smallest average pore diameter (11.12 ± 0.62 μm) and the highest compressive modulus (22.65 ± 0.10 MPa) could be obtained by using the short CO2‐philic chains of the PVDBM‐b‐PEG surfactant at a high concentration (1.0 wt %). Moreover, with the copolymerization of N‐hydroxymethyl acrylamide (HMAM) comonomers with acrylamide, the compressive modulus of the obtained P(AM‐co‐HMAM) poly‐HIPEs was three times higher than that of PAM poly‐HIPEs. Both PAM and P(AM‐co‐HMAM) poly‐HIPEs were employed as scaffolds to guide H9c2 cardiac muscle cellular growth. Fluorescence images showed that a smaller average pore size and a narrower pore‐size distribution were helpful for cell growth and proliferation on these materials. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46346.
Sodium bicarbonate as novel additive for fabrication of composite nanofiltration membranes with enhanced permeability
Authors: Sun Yongli , Jin Weiguang , Zhang Luhong , Zhang Na , Wang Baoyu , Jiang Bin 
Published: February 2018

ABSTRACTThin film composite nanofiltration membranes are frequently used to remove the residual salts from industrial wastewater. However, these nanofiltration membranes often have relatively low fluxes that limit their practical applications. To solve the problem, sodium bicarbonate was introduced into the composite nanofiltration membranes via interfacial polymerization of piperazine (PIP) and 1,3,5‐benzenetricarbonyl trichloride (TMC). The membrane surfaces were characterized by scanning electronic microscopy, attenuated total reflection Fourier transform infrared spectroscopy, electro kinetic analyzer, and contact angle goniometer. The results showed that the addition of sodium bicarbonate generated more tiny cracks on membrane surface and decreased the zeta potential of the membrane, which improved the permeation properties of the membrane without significantly decreasing the rejection against four kinds of salts (Na2SO4, MgSO4, NaCl, MgCl2). The addition of sodium bicarbonate provided a new possibility to improve the permeation properties of thin film composite nanofiltration membranes. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46363.
Multiscale thermal modeling of cured cycloaliphatic epoxy/carbon fiber composites
Authors: Chinkanjanarot Sorayot , Radue Matthew S. , Gowtham S. , Tomasi Julie M. , Klimek‐McDonald Danielle R. , King Julia A. , Odegard Gregory M. 
Published: February 2018

ABSTRACTCycloaliphatic epoxies (CEs) are commonly used for structural applications requiring improved resistance to elevated temperatures, UV radiation, and moisture relative to other epoxy materials. Accurate and efficient computational models can greatly facilitate the development of CE‐based composite materials for applications such as Aluminum Conductor Composite Core high‐voltage power lines. In this study, a new multiscale modeling method is developed for CE resins and composite materials to efficiently predict thermal properties (glass‐transition temperature, thermal expansion coefficient, and thermal conductivity). The predictions are compared to experimental data, and the results indicate that the multiscale modeling method can accurately predict thermal properties for CE‐based materials. For 85% crosslink densities, the predicted glass‐transition temperature, thermal expansion coefficient, and thermal conductivity are 279 °C, 109 ppm °C−1, 0.24 W m−1 K−1, respectively. Thus, this multiscale modeling method can be used for the future development of improved CE composite materials for thermal applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46371.
Thermal Transition of Bimetallic Metal–Phenolic Networks to Biomass‐Derived Hierarchically Porous Nanofibers
Authors: Xiao Gao , Chen Wei , Tian Fan , Richardson Joseph J. , Tardy Blaise L. , Liu Minghua , Joshi Neel S. , Guo Junling 
Published: February 2018

AbstractThe development and utilization of biomass resources could contribute to new materials for long‐term sustainable energy storage and environmental applications, reduce environmental impacts, and meet the urgent need for green and sustainable development strategies. Herein, a bimetallic metal–phenolic network (MPN) was applied to incorporate different metallic element species into cattle skin and fabricate collagen‐fiber‐derived complex oxide nanofibers using natural polyphenols (Myrica tannins). Direct thermal transition of these biomass–MPN composites generates hierarchically porous nanofibers possessing micro‐ and mesoporous architectures along with a well‐preserved macroscopic structure. The pore system and complex oxide composition provide excellent photocatalytic performance. This low‐cost, simple, and readily scalable MPN‐based approach provides a straightforward route to synthesize nanostructured materials directly from biomass, which could play important roles in a wide range of potential applications.
Communication of anger versus disappointment in bargaining and the moderating role of power
Authors: van Dijk Eric , van Beest Ilja , van Kleef Gerben A. , Lelieveld Gert‐Jan 
Published: February 2018

AbstractEmotional expressions can have a pervasive impact on bargaining behavior and outcomes. This widely documented phenomenon implies that in their communications, bargainers may adjust their apparent emotions. In the current paper, we developed a paradigm to study the communication of anger and disappointment, two of the most commonly experienced emotions in bargaining. The results of three experiments show that bargainers often adjust the intensity of their emotions in their communicated emotions. The findings show a differentiated pattern, revealing that bargainers rather exaggerate their disappointment than their anger, especially when the target of their communication is in a high power position. The results are discussed and related to the social functional approach of emotions.
Investigation of the in vivo metabolism of harpagoside and distribution of its metabolites in rats by HPLC‐IT‐TOF‐MSn
Authors: Wang Jing‐Zhe , Zhang Yi‐Fan , Xu Feng , Shang Ming‐Ying , Liu Guang‐Xue , Cai Shao‐Qing 
Published: February 2018

AbstractHarpagoside, an iridoid glycoside, is the major bioactive constituent of the traditional Chinese medicine Scrophulariae Radix. High‐performance liquid chromatography with a diode array detector combined with electrospray ionization ion trap time‐of‐flight multistage mass spectrometry (HPLC‐ESI‐IT‐TOF‐MSn) was used to profile and identify the metabolites of harpagoside in rats in vivo and to study the distribution of these metabolites in rats for the first time. A total of 45 metabolites were identified, 37 of which were postulated to be new compounds. The number of detected metabolites in the heart, liver, spleen, lung, kidney, stomach and small intestine was 2, 9, 6, 16, 4, 16 and 6, respectively, which indicated that the target organs of harpagoside should be spleen, lung and stomach. The main types of metabolic reactions of harpagoside in rats are hydrolysis, reduction, sulfuric acid addition, hydroxylation, methoxylation, sulfate substitution, methylation, glucose conjugation and amino acid conjugation. Furthermore, 23 metabolites were determined to have bioactivities based on the literature and ‘PharmMapper’ analysis. These findings are useful for better comprehension of the effective forms, target organs and pharmacological effects of harpagoside. Moreover, these findings provide a reference for studying the metabolism and distribution of iridoid compounds.
Simultaneous determination of evodiamine and its four metabolites in rat plasma by LC–MS/MS and its application to a pharmacokinetic study
Authors: Wang Cuiyun , Yue Fang , Ai Guangfeng , Yang Jie 
Published: February 2018

AbstractA simple and sensitive liquid chromatography tandem mass spectrometry method was validated for simultaneous quantification of evodiamine and its metabolites 10‐hydroxyevodiamine (M1), 18‐hydroxyevodiamine (M2), 10‐hydroxyevodiamine‐glucuronide (M3) and 18‐hydroxy‐ evodiamine‐glucuronide (M4) in rat plasma for the first time. The analytes were extracted with acetonitrile and separated on a C18 column within 3 min. The detection was achieved in positive selected reaction monitoring mode with precursor‐to‐product transitions at m/z 304.1 → 161.1 for evodiamine, m/z 320.1 → 134.1 for M1, m/z 320.1 → 150.1 for M2, m/z 496.2 → 134.1 for M3, m/z 496.2 → 171.1 for M4 and m/z 349.2 → 305.1 for camptothecin (internal standard). The linearity was evident over the tested concentration ranges with correlation coefficients >0.9991. The lower limits of quantification for evodiamine, M1, M2, M3 and M4 were 0.1, 0.1, 0.1, 0.25 and 0.25 ng mL−1, respectively. Extraction recoveries and matrix effects of the analytes were within the ranges of 84.51–97.21 and 90.13–103.30%, respectively. The accuracy (relative error) ranged from −8.14 to 7.23% while the intra‐ and inter‐day precisions (relative standard deviation) were < 9.31%. The validated assay was successfully applied for the pharmacokinetic study of evodiamine, M1, M2, M3 and M4 in rat. The current study will be helpful in understanding the in vivo disposition of evodiamine.
Spectrum–effect relationship between HPLC fingerprints and hypolipidemic effect of Curcuma aromatica
Authors: Liu Meiqiong , Wu Youjiao , Huang Shushi , Liu Huagang , Feng Jie 
Published: February 2018

AbstractCurcuma aromatica is used as a traditional Chinese medicine, and it is mainly distributed in Guangxi, China. In this study, 10 batches of C. aromatica were collected from different origins in Guangxi. The fingerprints were established by HPLC technique to investigate the quality stability of C. aromatica. The spectrum–effect relationship between HPLC fingerprints and hypolipidemic effect of C. aromatica was assessed by similarity analysis, gray relational analysis and multiple linear regression analysis. From the results, the similarity values between each batch of C. aromatica and reference fingerprint were >0.880, indicating the good quality stability of the 10 batches of C. aromatica. Twenty common peaks were selected as the fingerprints to evaluate the quality and hypolipidemic effect of C. aromatica. The results of spectrum–effect relationship showed that peaks 10, 18, 13, 15 and 17 in the fingerprints were closely related to hypolipidemic effect. This study successfully established the spectrum–effect relationship between HPLC fingerprints and hypolipidemic effect of C. aromatica, which provided methods for quality control and more effectively studies on bioactive compounds of C. aromatica. It could also provide a new simple and effective method for utilizing the fingerprints to optimize the Chinese prescription and develop traditional Chinese medicine.
The relevance of personal characteristics and gender diversity for (eco‐)innovation activities at the firm‐level: Results from a linked employer–employee database in Germany
Authors: Horbach Jens , Jacob Jojo 
Published: February 2018

AbstractThe burgeoning literature on the determinants of eco‐innovation has not yet considered the influence of the personal characteristics of a firm's employees. The paper opens this “black box” of unexplained heterogeneity: it has often been observed that firms with broadly similar characteristics take different decisions concerning eco‐innovations. In fact, latent variables such as the greenness of a firm may be explained by the personal characteristics (gender, family status, geographic origins, education, etc.) of the firm's staff and decision‐makers. The linked employer–employee database of the Institute for Employment Research (IAB) in Germany makes such an analysis possible based on data for 2010–2012. The results of an econometric analysis show that having a large proportion of highly qualified women and a mixed‐gender management board are positively correlated with innovation activities in the environmental sector. The results further confirm that export‐oriented firms are more likely to innovate, firms characterized by staff overaging innovate to a lesser extent and greater competition pressure encourages innovation.
Signaling good by doing good: How does environmental corporate social responsibility affect international expansion?
Authors: Xu Xiaodong , Zeng Saixing , Chen Hongquan 
Published: February 2018

AbstractThis study investigates the mechanisms through which environmental corporate social responsibility (CSR) facilitates international expansion. It is currently believed that environmental CSR can allow firms to establish trusting relationships with external stakeholders and build competitive advantages. However, the question of whether and how environmental CSR affects export performance needs to be answered. We focus on two aspects of environmental CSR: energy conservation and emission reduction. We argue that firms with better performance in energy conservation and emission reduction are more likely to obtain international certification to pursue international expansion, as a signal of desirable attributes. By using 425 listed companies from environmentally sensitive industries between 2008 and 2012 in China, we find that a high level of energy conservation and emission reduction has a significant and indirect effect on export performance, which is mediated by their signaling behavior.
Central nervous system relapse in patients over 80 years with diffuse large B‐cell lymphoma: an analysis of two LYSA studies
Authors: Cabannes‐Hamy Aurélie , Peyrade Frederic , Jardin Fabrice , Emile Jean‐François , Delwail Vincent , Mounier Nicolas , Haioun Corinne , Perrot Aurore , Fitoussi Olivier , Lara Diane , Delarue Richard , André Marc , Offner Fritz , Ghesquières Hervé , Pascal Laurent , Soussain Carole , Lazarovici Julien , Schiano Jean‐Marc , Gaulard Philippe , Tilly Hervé , Thieblemont Catherine ,   the LYSA,   the lymphoma study association
Published: February 2018

AbstractCNS relapse is reported in 2–5% of diffuse large B‐cell lymphoma (DLBCL) patients, dramatically decreasing overall survival (OS). Very few studies address incidence and risk factors of CNS relapse in very elderly patients, a challenging population to treat given their commonly associated comorbidities. A retrospective analysis was performed of 270 DLBCL patients >80 years treated between 2004 and 2013 in two multicentre phase II LYSA trials (LNH03‐7B, LNH09‐7B) evaluating the addition of rituximab or ofatumumab to mini‐CHOP as front‐line therapy. No patients received CNS prophylaxis. CNS relapse was evaluated according to cumulative incidence, patient characteristics, risk factors, and survival. Median age was 83 years (range: 79–95). After a median follow‐up of 28.7 months, eight patients had CNS relapse (3.0%). Median time between inclusion and CNS relapse was 19.2 months (range: 3.2–32.6). Patients survived a median of 1.5 months after CNS relapse (range: 0.4–4.1). Median OS from relapse was significantly lower in CNS relapse patients (1.5 months, 95% CI: 0.4–3.5) compared to patients with non‐CNS relapse (6.6 months; 95% CI: 4.6–11.9). No baseline characteristics were associated with CNS relapse. The proportion of patients with CNS disease did not differ significantly between patients with low‐intermediate risk according to CNS‐IPI and patients with high risk (3% vs. 2.8%, P = 1.00). CNS relapse cumulative incidence in very elderly treatment‐naive patients is 1.8% at 2 years and is associated with poor survival. This population had a long median time to CNS relapse. Absence of prophylaxis did not strongly impact CNS relapse incidence.
Human Appeasing Pheromone (HAP) influence on behavior and psychopathological residual symptoms of patients with complex psychiatric disorders
Authors: Piccinni Armando , Veltri Antonello , Marazziti Donatella , Mucci Federico , Cozzi Alessandro , Pageat Patrick 
Published: February 2018

Key Clinical MessageThis article is a case‐report series showing the effectiveness of a three‐month exposure to a synthetic analogue of Human Appeasing Pheromone as add‐on strategy to psychopharmacological treatment on behavioral and residual symptoms of three patients suffering from severe psychiatric disorders with complex clinical pictures.