bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sulfur‐Rich Phosphorus Sulfide Molecules for Use in Rechargeable Lithium Batteries
Authors: Li Xiaona , Liang Jianwen , Lu Yue , Hou Zhiguo , Cheng Qiushi , Zhu Yongchun , Qian Yitai 
Published: February 2017

AbstractA new family of sulfur‐rich phosphorus sulfide molecules (P4S10+n) and their electrochemical reaction mechanism with metallic Li has been explored. These P4S10+n molecules are synthesized by the reaction between P4S10 and S. For Li batteries, the P4S40 molecule in the series of P4S10+n molecules provides the highest capacity, which has a first discharge capacity of 1223 mAh g−1 at 100 mA g−1 and stabilizes at approximately 720 mAh g−1 at 500 mA g−1 after 100 cycles. This new class of sulfur‐rich P4S10+n molecules and its electrochemical behavior for room‐temperature Li+ storage could provide novel insights for phosphorus sulfide molecules and high‐energy batteries.
Intramolecular Amido Transfer Leading to Structurally Diverse Nitrogen‐Containing Macrocycles
Authors: Kim Heejeong , Chang Sukbok 
Published: February 2017

AbstractReported herein is the development of rhodium‐catalyzed intramolecular amido transfer as an efficient route to nitrogen‐containing macrocycles starting from acetophenone ketoximes tethered with either aryl or alkyl azides. Facile generation of rhodacycles and metal imido intermediates was the key to success in this mechanistic scaffold to represent the first example of an intramolecular inner‐sphere C−H amination. While substrates bearing aryl azides underwent a monomeric ring formation in high yields, a dimeric double cyclization took place exclusively with alkyl‐azide‐tethered ketoximes, thus affording up to 36‐membered azamacrocyclic products.
Improved thermal stability and flame resistance of flexible polyimide foams by vermiculite reinforcement
Authors: Yan Li , Fu Liwei , Chen Yajun , Tian Huafeng , Xiang Aimin , Rajulu A. Varada 
Published: February 2017

ABSTRACTIn this work, a series of flexible polyimide composite foams with dianhydride and isocyanate as the starting materials were prepared by pre‐dispersing vermiculite in isocyanate. The experimental results revealed that the cellular diameter of foams obviously decreased with the addition of vermiculite. The open cell content decreased with the increase of vermiculite, and foams containing vermiculite possessed higher apparent densities of about 10 kg/m3when compared with the neat polyimide foams. The compressive strength was dramatically enhanced by vermiculite incorporation, and reached maximum when the filler content was 2%, indicating dramatically reinforcing effect of vermiculite. With the addition of vermiculite, the thermal stability and flame resistance of polyimide foams were improved. The limiting oxygen index of polyimide foams showed an increase from 31 to 33.5% with increase of vermiculite from 0 to 8% and the peak heat release rate decreased, indicating high flame retardant properties. Vermiculites possess excellent heat insulation and high temperature stability. When conditioned at high temperature, the filler would block the heat transfer during the bulk foam. Therefore, it is feasible to further increase the mechanical and thermal properties of polyimide foams by vermiculite filling. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2017,134, 44828.
Intercalated hydrotalcite‐like materials and their application as thermal stabilizers in poly(vinyl chloride)
Authors: Yan Jie , Yang Zhanhong 
Published: February 2017

ABSTRACTThe preparation of hydrotalcites with traditional materials is often based on the corresponding salts and alkali solutions. In this study, to facilitate industrial synthesis and take advantage of the lower cost during the process, a Ca–Al–HPO3–layered double hydroxide (LDH) was directly synthesized with calcium hydroxide, aluminum hydroxide, and sodium phosphite powders. X‐ray diffraction, Fourier transform infrared, and scanning electron microscopy analyses confirmed the successful synthesis of the phosphite‐intercalated hydrotalcite. Compared with Ca–Al–CO3–LDH, Ca–Al–HPO3–LDH enhanced the heat stability of poly(vinyl chloride) (PVC) in terms of both short‐term and long‐term stability because phosphite replaced the allyl chloride and reacted with the conjugated double bonds in PVC; this was deduced through a thermal aging test. The composites of Ca–Al–HPO3–LDH, zinc stearate, and calcium stearate had a synergetic effect when added to PVC and exhibited excellent thermal stability. In addition, the phosphite reacted with ZnCl2 in case of the phenomenon of zinc burning. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44896.
Determination of formaldehyde and TVOC emission behavior from interior use plywood using various post heat treatment processes
Authors: Luo Jing , Li Xiaona , Shi Ruiqing , Gao Qiang , Li Jianzhang , Li Li 
Published: February 2017

ABSTRACTTo reduce the formaldehyde/TVOC emissions from plywood with melamine–urea–formaldehyde (MUF) resin, four heat treatment procedures were designed and applied. Five‐ply plywood was fabricated, and its formaldehyde/TVOC emissions and wet shear strength were tested. Results showed that a simple low/no pressure post heat treatment procedure was effective and practical to decrease the formaldehyde/TVOC emissions from plywood. This was attributed to completely cured of MUF resin, the breakage of unstable chemical bonds, the acceleration of free formaldehyde releasing, and the exposed surface of the plywood. Meanwhile, this process also balanced the interior force of the resultant plywood and improved its wet shear strength. Under a 12 h oven heat treatment procedure after hot press, the formaldehyde and TVOC emissions from plywood decreased to 0.020 and 0.036 ppm, respectively, while the surface and core layer wet shear strength of plywood was improved to 1.24 and 1.08 MPa. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44909.
Core‐shell structure of carbon nanotube nanocapsules reinforced poly(lactic acid) composites
Authors: Wu Gaihong , Liu Shuqiang , Wu Xiongying , Ding Xuemei 
Published: February 2017

ABSTRACTIn this study “core‐shell” structure of carbon nanotube (CNT) nanocapsules, which aimed at toughening poly(lactic acid) (PLA) were designed by a synthetic strategy consisting of two reaction steps. The first step was to produce reactive chemical bond to bridge CNTs and PLA. So coupling agent KH570 was used to modify CNTs (CNTs‐KH570). The second step involved ring open polymerization of lactide (LA). Lactide polymerized into PLA under catalysis and meanwhile grafted onto CNTs via KH570 (CNTs‐KH570‐PLA). Thus, the CNTs nanocapsules were constructed. Fourier transform infrared spectroscopy (FTIR) showed coupling agent KH570 succeeded in linking CNTs and PLA during LA polymerization. In addition, scanning electron microscopy (SEM) and transmission electron microscope (TEM) indicated CNTs dispersed homogeneous in PLA matrix and the compatibility between them was excellent. The mechanical test also suggested the designed nanocapsules had good effect on toughening PLA composites. This research found one economical and simple way to improve PLA mechanical properties and further broaden its application in many fields. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44919.
Synthesis of sulfonyl fluorinated macro emulsifier for low surface energy emulsion polymerization application
Authors: Yin Xue , Song You‐Zhi , Liang Zhi‐Ying , Zhang Bin , Fang Li‐Feng , Zhu Li‐Ping , Zhu Bao‐Ku 
Published: February 2017

ABSTRACTFluorinated acrylate emulsions have been extensively applied for hydrophobic surface coatings. To obtain fluorinated emulsions of low surface energy, amphiphilic sulfonyl macro emulsifiers consisting of 2‐(perfluorohexyl) ethyl acrylate (PFHEA) and 2‐acrylanmido‐2‐methylpropanesulfonic acid (AMPS) were designed via radical polymerization and subsequently used for the emulsion copolymerization of PFHEA, methyl methacrylate (MMA), and methyl butyl acrylate (MBA). Under optimum synthesis conditions, the emulsifier displayed superior emulsification properties such as high monomer conversion, small particle size, and excellent stability compared with conventional emulsifiers. The corresponding emulsions with sulfonyl macro emulsifiers exhibited extreme low surface energy (9.8 mN/m) and outstanding hydrophobicity due to high contents of fluorinated chains, as well as thimbleful hydrophilic sulfonyl groups, which shows the great potential in water repellent modification application. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44921.
Overview of Human Salivary Glands: Highlights of Morphology and Developing Processes
Authors: de Paula Fernanda , Teshima Tathyane Harumi Nakajima , Hsieh Ricardo , Souza Milena Monteiro , Nico Marcello Menta Simonsen , Lourenco Silvia Vanessa 
Published: February 2017

ABSTRACTSalivary glands are essential organs that produce and secrete saliva to the oral cavity. During gland morphogenesis, many developmental processes involve a series of coordinated movements and reciprocal interactions between the epithelium and mesenchyme that generate the ductal system and the secretory units. Recent studies have shown new findings about salivary gland development, particularly regarding lumen formation and expansion, with the involvement of apoptosis and cell polarization, respectively. Moreover, it has been observed that human minor salivary glands start forming earlier than previously published and that distinct apoptotic mediators can trigger duct lumen opening in humans. This review summarizes updated morphological and cellular features of human salivary glands and also explores new aspects of the human developmental process. Anat Rec, 300:1180–1188, 2017. © 2017 Wiley Periodicals, Inc.
A New High‐Order Adaptive Robust Control for Constraint Following of Mechanical Systems
Authors: Wang Xiuye , Zhao Han , Sun Qinqin , Chen Ye‐Hwa 
Published: February 2017

AbstractA mechanical system is to follow a class of prescribed holonomic or nonholonomic constraints. The system contains time‐varying bounded uncertainty. However, the bound is unknown. The objective is to design a control which renders constraint following. A new high‐order adaptive robust control is proposed. The control guarantees uniform boundedness and uniform ultimate boundedness even in the presence of the uncertainty. Significant advantages of this new control are demonstrated both analytically and numerically. It is shown that the system performance, including the finite entering time, constraint‐following error, and control magnitude, can be improved by tuning the control order.
Molecular recognition and binding of beta‐lactamase II from Bacillus cereus with penicillin V and sulbactam by spectroscopic analysis in combination with docking simulation
Authors: Zhang Yeli , Qiao Pan , Li Shuaihua , Feng Xuan , Bian Liujiao 
Published: February 2017

AbstractThe molecular recognition and binding interaction of beta‐lactamase II from Bacillus cereus (Bc II) with penicillin V (PV) and sulbactam (Sul) at 277 K were studied by spectroscopic analysis and molecular docking. The results showed that a non‐fluorescence static complex was separately formed between Bc II and two ligands, the molecular ratio of Bc II to PV or Sul was both 1:1 in the binding and the binding constants were 2.00 × 106 and 3.98 × 105 (L/mol), respectively. The negative free energy changes and apparent activation energies indicated that both the binding processes were spontaneous. Molecular docking showed that in the binding process, the whole Sul molecule entered into the binding pocket of Bc II while only part of the whole PV molecule entered into the pocket due to a long side chain, and electrostatic interactions were the major contribution to the binding processes. In addition, a weak conformational change of Bc II was also observed in the molecular recognition and binding process of Bc II with PV or Sul. This study may provide some valuable information for exploring the recognition and binding of proteins with ligands in the binding process and for the design of novel super‐antibiotics.
Synthesis of AlN: Eu2+ green phosphors by a simple direct nitridation method
Authors: Liu Qian , Zhang Li , Li Junfeng , Zhao Kun 
Published: February 2017

AbstractEu‐doped aluminum nitride phosphors were successfully prepared using simple direct nitridation of a metallic aluminum and Eu2O3 powder mixture in flowing ammonia. AlN formed at reaction temperatures >900°C, and Eu3+ transformed into the secondary oxide phase EuAl2O4 in the nitridation condition. Phase pure AlN was obtained by post‐heat treatment of the nitridated product at 1600°C for 3 h in a nitrogen atmosphere, with an Eu2+ doping concentration < 0.5%. The phosphors exhibited broad green emission centered at 521 nm under 363 nm excitation. The luminescence of the phosphor was significantly influenced by the post‐heat treatment temperature, which affected the dissolution of Eu2+, phase purity, crystallinity, and particle size of the AlN host.
Antidiabetic effect of chitosan oligosaccharide (GO2KA1) is mediated via inhibition of intestinal alpha‐glucosidase and glucose transporters and PPARγ expression
Authors: Yu Seok‐Yeong , Kwon Young‐In , Lee Chan , Apostolidis Emmanouil , Kim Young‐Cheul 
Published: February 2017

AbstractWe have previously reported that administration of low molecular weight chitosan oligosaccharide (GO2KA1) significantly suppressed postprandial blood glucose rise with increased plasma adiponectin and HbA1c levels in animals and humans. However, the cellular mechanisms whereby GO2KA1 exerts antihyperglycemic effects still remain to be determined. Using intestinal Caco‐2 cells and 3T3‐L1 cells, here we show that GO2KA1 has dual modes of antidiabetic action by (1) inhibiting intestinal α‐glucosidase as well as glucose transporters SGLT1 and GLUT2 that were distinct from the acarbose effect; (2) enhancing adipocyte differentiation, PPARγ expression and its target genes, such as FABP4, adiponectin, and GLUT4, whereas the effects were abolished by co‐treatment with BADGE, a PPARγ antagonist. Moreover, GO2KA1 significantly increased glucose uptake, which was reduced in the presence of BADGE. Our data show that GO2KA1 may prevent hyperglycemia by inhibiting intestinal glucose digestion and transport and also enhance glucose uptake, at least in part, by upregulating adiponectin expression through PPARγ in adipocytes. These findings may provide potential molecular modes of action for the antidiabetic effects of chitosan oligosaccharide observed in clinical and animal studies. © 2016 BioFactors, 43(1):90–99, 2017
Determination of bifonazole and identification of its photocatalytic degradation products using UPLC‐MS/MS
Authors: Kryczyk Agata , Żmudzki Paweł , Hubicka Urszula 
Published: February 2017

AbstractThe main goal of the presented work was to investigate the effect of ZnO or/and TiO2 on the stability of bifonazole in solutions under UVA irradiation. To this end, a simple and reproducible UPLC method for the determination of bifonazole in the presence of its photocatalytic degradation products was developed. Linearity was studied in the range of 0.0046–0.15 mg mL−1 with a determination coefficient of 0.9996. Bifonazole underwent a photocatalytic degradation process under the experimental conditions used. Comparative studies showed that combination of TiO2/ZnO (1:1 w/w) was a more effective catalyst than TiO2 or ZnO with a degradation rate of up to 67.57% after 24 h of irradiation. Further, kinetic analyses indicated that the photocatalytic degradation of bifonazole in the mixture of TiO2/ZnO can be described by a pseudo‐first order reaction. Statistical comparison clearly indicated that the presence of TiO2/ZnO also affected the stability of bifonazole from a cream preparation after 15 h of UVA exposure (p < 0.05). Ten photodegradation products of bifonazole were identified for the first time and their plausible fragmentation pathways, derived from MS/MS data, were proposed. The main pathway in the photocatalytic transformation of bifonazole in the presence of ZnO or/and TiO2 involves hydroxylation of the methanetriyl group and/or adjacent phenyl rings and cleavage of the imidazole moiety.
Effect of alprazolam on rat serum metabolic profiles
Authors: Li Yan , Lin Gaotong , Chen Bingbao , Zhang Jing , Wang Lingtian , Li Zixia , Cao Yungang , Wen Congcong , Yang Xuezhi , Cao Gaozhong , Wang Xianqin , Cao Guoquan 
Published: February 2017

AbstractWe developed a serum metabolomic method by gas chromatography–mass spectrometry (GC–MS) to evaluate the effect of alprazolam in rats. The GC–MS with HP‐5MS (0.25 μm × 30 m × 0.25 mm) mass was conducted in electron impact ionization (EI) mode with electron energy of 70 eV, and full‐scan mode with m/z 50–550. The rats were randomly divided to four groups, three alprazolam‐treated groups and a control group. The alprazolam‐treated rats were given 5, 10 or 20 mg/kg (low, medium, high) of alprazolam by intragastric administration each day for 14 days. The serum samples were corrected on the seventh and fourteenth days for metabolomic study. The blood was collected for biochemical tests. Then liver and brain were rapidly isolated and immersed for pathological study. Compared with the control group, on the seventh and fourteen days, the levels of d‐glucose, 9,12‐octadecadienoic acid, butanoic acid, l‐proline, d‐mannose and malic acid had changed, indicating that alprazolam induced energy metabolism, fatty acid metabolism and amino acid metabolism perturbations in rats. There was no significant difference for alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, urea and uric acid between controls and alprazolam groups. According to the pathological results, alprazolam is not hepatotoxic. Metabolomics could distinguish different alprazolam doses in rats.
Carbon Dioxide Oversolubility in Nanoconfined Liquids for the Synthesis of Cyclic Carbonates
Authors: Zakharova Maria V. , Kleitz Freddy , Fontaine Frédéric‐Georges 
Published: February 2017

AbstractThe physical phenomenon of gas oversolubility in nanoconfined liquids was successfully applied for the catalytic cycloaddition of carbon dioxide to epoxides to generate organic cyclic carbonates. Hybrid adsorbents based on MCM‐41 and SBA‐15 mesoporous silica materials were synthesized, and efficient nucleophile deposition on the surface of the support was achieved through a grafting procedure, which allowed for an effective and durable metal‐free catalytic system. Room‐temperature transformation of styrene and hexene oxides to the corresponding organic carbonates at atmospheric pressure of carbon dioxide was explored.
Crosslinked Network with Rotatable Binding Sites Based on Monocarboxylated α‐Cyclodextrin [2]Rotaxane Capable of Angiotensin III Recognition
Authors: Ohmori Ko‐hei , Ooya Tooru , Takeuchi Toshifumi 
Published: February 2017

AbstractSynthetic receptors selective for target peptides or proteins have received attention because of their potential applications in the separation of biomolecules and biomedical diagnostics. Herein, a [2]rotaxane‐based functional monomer containing monocarboxylated α‐cyclodextrin (α‐CD) was synthesized, and its crosslinked polymers were evaluated to determine their binding ability to a model peptide, angiotensin III (Arg‐Val‐Tyr‐Ile‐His‐Pro‐Phe), containing an arginine (Arg) residue. The binding ability of the resulting polymers toward angiotensin III, angiotensin IV (Val‐Tyr‐Ile‐His‐Pro‐Phe), and FMRF‐amide (Phe‐Met‐Arg‐Phe) was examined by the batch‐binding assay and compared with that of control polymers, in which maleic acid‐introduced α‐CD was chemically crosslinked. The results suggest that the [2]rotaxane‐based functional monomer in the crosslinked polymer contributes to the high affinity toward angiotensin III. The α‐CD motion and rotation within the [2]rotaxane‐based crosslinked polymer may be applicable for designing molecular recognition materials.
Optically Active Cubic Liquid Crystalline Phase Made of Achiral Polycatenar Stilbene Derivatives
Authors: Wolska Joanna Maria , Wilk Joanna , Pociecha Damian , Mieczkowski Jozef , Gorecka Ewa 
Published: February 2017

AbstractAchiral stilbene polycatenars forming smectic, columnar or cubic phase depending on the terminal chains length, were studied. The cubic Im3m phase exhibited optical activity originating in twisted face‐to‐face molecular aggregates. The optical activity of the phase is preserved upon sample crystallization, providing evidence of a transfer of chirality on a molecular level.
Colorimetric Detection of Thiophenol Based on a Phenolphthalein Derivative and Its Application as a Molecular Logic Gate
Authors: Kim Hyunsu , Swamy K. M. K , Kwon Nahyun , Kim Yonghee , Park Sungsu , Yoon Juyoung 
Published: February 2017

AbstractA phenolphthalein‐based colorimetric probe bearing a dinitrobenzene group is reported as a thiophenol (PhSH)‐selective chemodosimeter. PhSH can react with chemodosimeter 1 to afford phenolphthalein. The addition of PhSH to the aqueous solution of 1 followed by a change in pH of the resulting solution to basic induces a selective color change from colorless to pink. Furthermore, using PhSH and base as inputs and color change of 1 by naked eye as an output, leads to the construction of an AND logic gate.
A Sustainable One‐Pot, Two‐Enzyme Synthesis of Naturally Occurring Arylalkyl Glucosides
Authors: Bassanini Ivan , Krejzová Jana , Panzeri Walter , Monti Daniela , Křen Vladimir , Riva Sergio 
Published: February 2017

AbstractA sustainable, convenient, scalable, one‐pot, two‐enzyme method for the glucosylation of arylalkyl alcohols was developed. The reaction scheme is based on a transrutinosylation catalyzed by a rutinosidase from A. niger using the cheap commercially available natural flavonoid rutin as glycosyl donor, followed by selective “trimming” of the rutinoside unit catalyzed by a rhamnosidase from A. terreus. The process was validated with the syntheses of several natural bioactive glucosides, which could be isolated in up to 75 % yield without silica‐gel chromatography.
Revisiting the phylogeny ofWolbachiain Collembola
Authors: Ma Yao , Chen Wan‐Jun , Li Zhao‐Hui , Zhang Feng , Gao Yan , Luan Yun‐Xia 
Published: February 2017

AbstractThe endosymbiontWolbachiahas been detected in a few parthenogenetic collembolans sampled in Europe and America, including three species of Poduromorpha, two species of Entomobryomorpha, and two species of Neelipleona. Based on 16SrRNAandftsZgene sequences, most of theWolbachiainfecting parthenogenetic collembolans were characterized as members of supergroup E and showed concordant phylogeny with their hosts. However, the two neelipleonan symbionts form another unique group, indicating thatWolbachiahas infected parthenogenetic collembolans multiple times. In this study, five parthenogenetic collembolan species were identified as hosts ofWolbachia, and four newWolbachiastrains were reported for four collembolan species sampled in China, respectively, including a neelipleonan strain fromMegalothorax incertus(wMinc). Our results demonstrated that theWolbachiamultilocus sequence typing (MLST) system is superior to the 16SrRNA + ftsZapproach for phylogenetic analyses of collembolanWolbachia. TheMLSTsystem assigned theseWolbachiaof parthenogenetic collembolans to supergroup E as a unique clade, which includedwMinc, supporting the monophyletic origin ofWolbachiain parthenogenetic collembolan species. Moreover, our data suggested supergroup E as one of the most divergent lineages inWolbachiaand revealed the discrepancy between the phylogenies ofWolbachiafrom parthenogenetic collembolans and their hosts, which may result from the high level of genetic divergence between collembolanWolbachia, in association with the geographic differentiation of their hosts, or the possible horizontal transmission ofWolbachiabetween different collembolan species.