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CHEMICAL ENGINEERING (188 journals)                  1 2     

AATCC Journal of Research     Full-text available via subscription   (Followers: 4)
ACS Sustainable Chemistry & Engineering     Hybrid Journal  
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials     Hybrid Journal   (Followers: 6)
Acta Polymerica     Hybrid Journal   (Followers: 7)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 5)
Advanced Chemical Engineering Research     Open Access   (Followers: 11)
Advanced Powder Technology     Hybrid Journal   (Followers: 16)
Advances in Applied Ceramics     Partially Free   (Followers: 3)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 18)
Advances in Chemical Engineering and Science     Open Access   (Followers: 26)
Advances in Polymer Technology     Hybrid Journal   (Followers: 11)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 5)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 9)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 10)
Anti-Corrosion Methods and Materials     Hybrid Journal   (Followers: 4)
Applied Petrochemical Research     Open Access   (Followers: 3)
Asia-Pacific Journal of Chemical Engineering     Hybrid Journal   (Followers: 6)
Biochemical Engineering Journal     Hybrid Journal   (Followers: 9)
Biofuel Research Journal     Open Access   (Followers: 3)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 8)
Brazilian Journal of Chemical Engineering     Open Access   (Followers: 3)
Bulletin of Chemical Reaction Engineering & Catalysis     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 3)
Carbohydrate Polymers     Hybrid Journal   (Followers: 9)
Catalysts     Open Access   (Followers: 8)
ChemBioEng Reviews     Full-text available via subscription  
Chemical and Engineering News     Free   (Followers: 7)
Chemical and Materials Engineering     Open Access   (Followers: 2)
Chemical and Petroleum Engineering     Hybrid Journal   (Followers: 11)
Chemical and Process Engineering     Open Access   (Followers: 4)
Chemical and Process Engineering Research     Open Access   (Followers: 6)
Chemical Communications     Full-text available via subscription   (Followers: 37)
Chemical Engineering & Technology     Hybrid Journal   (Followers: 25)
Chemical Engineering and Processing: Process Intensification     Hybrid Journal   (Followers: 10)
Chemical Engineering and Science     Open Access   (Followers: 3)
Chemical Engineering Communications     Hybrid Journal   (Followers: 11)
Chemical Engineering Journal     Hybrid Journal   (Followers: 24)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 19)
Chemical Engineering Research Bulletin     Open Access   (Followers: 1)
Chemical Engineering Science     Hybrid Journal   (Followers: 18)
Chemical Geology     Hybrid Journal   (Followers: 11)
Chemical Papers     Hybrid Journal   (Followers: 3)
Chemical Product and Process Modeling     Hybrid Journal   (Followers: 3)
Chemical Reviews     Full-text available via subscription   (Followers: 128)
Chemical Society Reviews     Full-text available via subscription   (Followers: 37)
Chemical Technology     Open Access   (Followers: 5)
ChemInform     Hybrid Journal   (Followers: 3)
Chemistry & Industry     Hybrid Journal   (Followers: 2)
Chemistry Central Journal     Open Access   (Followers: 7)
Chemistry of Materials     Full-text available via subscription   (Followers: 132)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 8)
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Chemical Letters     Full-text available via subscription   (Followers: 3)
Chinese Journal of Chemical Engineering     Full-text available via subscription   (Followers: 3)
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 2)
Coke and Chemistry     Hybrid Journal  
Coloration Technology     Hybrid Journal   (Followers: 1)
Computational Biology and Chemistry     Hybrid Journal   (Followers: 9)
Computer Aided Chemical Engineering     Full-text available via subscription   (Followers: 2)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 8)
CORROSION     Full-text available via subscription   (Followers: 18)
Corrosion Engineering, Science and Technology     Hybrid Journal   (Followers: 38)
Corrosion Reviews     Hybrid Journal   (Followers: 5)
Crystal Research and Technology     Hybrid Journal   (Followers: 2)
Current Opinion in Chemical Engineering     Open Access   (Followers: 3)
Education for Chemical Engineers     Hybrid Journal   (Followers: 4)
Eksergi     Open Access  
Emerging Trends in Chemical Engineering     Full-text available via subscription  
European Polymer Journal     Hybrid Journal   (Followers: 44)
Fibers and Polymers     Full-text available via subscription   (Followers: 3)
Fluorescent Materials     Open Access   (Followers: 1)
Focusing on Modern Food Industry     Open Access   (Followers: 3)
Frontiers of Chemical Science and Engineering     Hybrid Journal   (Followers: 1)
Gels     Open Access  
Geochemistry International     Hybrid Journal  
Handbook of Powder Technology     Full-text available via subscription   (Followers: 3)
Heat Exchangers     Open Access   (Followers: 1)
High Performance Polymers     Hybrid Journal  
Hungarian Journal of Industry and Chemistry     Open Access  
Indian Chemical Engineer     Hybrid Journal   (Followers: 4)
Indian Journal of Chemical Technology (IJCT)     Open Access   (Followers: 11)
Indonesian Journal of Chemical Science     Open Access  
Industrial & Engineering Chemistry     Full-text available via subscription   (Followers: 10)
Industrial & Engineering Chemistry Research     Full-text available via subscription   (Followers: 20)
Industrial Chemistry Library     Full-text available via subscription   (Followers: 4)
Info Chimie Magazine     Full-text available via subscription   (Followers: 2)
International Journal of Chemical and Petroleum Sciences     Open Access   (Followers: 2)
International Journal of Chemical Engineering     Open Access   (Followers: 7)
International Journal of Chemical Reactor Engineering     Hybrid Journal   (Followers: 3)
International Journal of Chemical Technology     Open Access   (Followers: 4)
International Journal of Chemoinformatics and Chemical Engineering     Full-text available via subscription   (Followers: 2)
International Journal of Food Science     Open Access   (Followers: 4)
International Journal of Industrial Chemistry     Open Access  
International Journal of Polymeric Materials     Hybrid Journal   (Followers: 4)
International Journal of Science and Engineering     Open Access   (Followers: 7)
International Journal of Waste Resources     Open Access   (Followers: 5)
Journal of Chemical Engineering & Process Technology     Open Access   (Followers: 3)
Journal of Applied Crystallography     Hybrid Journal   (Followers: 5)
Journal of Applied Electrochemistry     Hybrid Journal   (Followers: 11)

        1 2     

Journal Cover High Performance Polymers
  [SJR: 0.374]   [H-I: 29]   [0 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0954-0083 - ISSN (Online) 1361-6412
   Published by Sage Publications Homepage  [835 journals]
  • Relaxation behavior of nanographite-reinforced silicon elastomer
    • Authors: Saji, J; Khare, A, Mahapatra, S. P.
      Pages: 3 - 13
      Abstract: Dynamic mechanical and dielectric relaxation spectra (DRS) of nanographite-reinforced silicon elastomer nanocomposites were studied. Scanning electron microscopic photomicrographs show well dispersion of nanographite in elastomer matrix. The primary relaxations (α transition and glass transition) have been studied by dynamic mechanical analysis as a function of temperature (–100 to 100°C) at a frequency of 1 Hz and at 1% strain. Irrespective of the nanographite loading, all nanocomposites show glass transition temperature in the range of –11 to –6°C, which was explained on the basis of the relaxation dynamics of silicon matrix. Storage modulus (E') shows elastic property and loss modulus shows viscous property of silicon nanocomposites as a function of temperature. Cole–Cole plots exhibit nonlinearity in the nanocomposite matrix. The nonlinearity in the plot between tan and E' is explained by the concept of nanographite silicon interactions and the aggregation of the nanographite. The secondary relaxation (secondary, α* or β) has been studied using DRS in the frequency range of 10–1–106 Hz. The capacitance of the nanocomposite is expressed in terms of dielectric permittivity and explained on the basis of polarization of the nanographite in the silicon matrix. The dielectric modulus formalism has been utilized to further investigate the conductivity and relaxation phenomenon. Argand diagram confirms the existence of non-Debye/nonlinear relationship. The percolation threshold as studied by conductivity and dielectric permittivity measurements is found to be at 6 phr nanographite loading.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008314568729
      Issue No: Vol. 28, No. 1 (2016)
  • Preparation and properties of high-performance poly(amide-imide) composite
           films based on glucose-functionalized multiwalled carbon nanotubes
    • Authors: Mallakpour, S; Zadehnazari, A.
      Pages: 14 - 25
      Abstract: Glucose has been covalently linked to multiwalled carbon nanotubes (MWCNTs). After that, the modified MWCNTs were added to a poly(amide–imide) (PAI) matrix. PAI-based composites were fabricated by an ex situ blending technique with 5, 10, and 15% of loading by weight. The composite hybrid films were prepared by a solvent-casting method. The structural properties of all hybrids have been characterized using a large variety of spectroscopic and microscopic techniques. It was found that the functionalization of MWCNTs could improve their dispersion and interfacial adhesion to the PAI matrix. The thermal stability of the MWCNT/PAI composite films was improved due to excellent dispersion of MWCNT in the polymer matrix. Tensile tests on the composites showed an increase in the elastic modulus and the yield strength and a decrease in the failure strain.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008314568731
      Issue No: Vol. 28, No. 1 (2016)
  • Synthesis and characterization of thermally stable polyimides with a
           pendent phenothiazine unit based on new diamine
    • Authors: Ghorpade, R. V; Thorave, A. K, Rajan, C. R, Chavan, N. N, Ponrathnam, S.
      Pages: 26 - 33
      Abstract: A novel diamine 10-(3,5-diaminobenzoyl)phenothiazine (DBPT) with a side chain containing phenothiazine unit was synthesized. A new family of polyimides (PIs) containing phenothiazine unit in the side chains has been successfully synthesized by direct polycondensation of DBPT with pyromellitic dianhydride, 3,3',4,4'-benzophenone tertacarboxylic dianhydride, and 4,4'-oxydiphthalic anhydride (ODA) via a conventional two-step chemical imidization process. The yield of polymers was good enough, which were soluble in most organic solvents. The molecular orbital energy gaps, thermal stability, and crystallinity of PIs were investigated by molecular modeling, thermogravimetric analysis, and wide-angle X-ray scattering, respectively. Thermal properties of polymers were good enough to permit the use of these PIs in various applications; only 49% weight loss is detected at 900°C in nitrogen atmosphere. X-Ray diffraction clearly reveals the amorphous nature of PIs. A quantum modeling study (density functional theory) has shown the influence of dianhydride structure on the energy difference of highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008314568877
      Issue No: Vol. 28, No. 1 (2016)
  • Synthesis and biodegradation studies of optically active
           poly(amide-imide)s based on N,N'-(pyromellitoyl)-bis-L-amino acid
    • Authors: Wu, Q; Yang, Z, Yao, J, Yu, D.
      Pages: 34 - 46
      Abstract: Five new optically active poly(amide–imide)s (PAIs) (PAI3a–PAI3e) were synthesized through the direct polycondensation reaction between chiral N,N'-(pyromellitoyl)-bis-l-amino acids and 4,4'-diaminodiphenyl ether. The resulted polymers were fully characterized by means of Fourier transform infrared (FTIR) and proton nuclear magnetic resonance spectroscopy, elemental analysis, inherent viscosity measurement, solubility tests, specific rotation, and thermogravimetric analysis (TGA). The biodegradation studies of the PAIs were performed in soil and in phosphate buffer solution. The surface morphology and hydrophobicity of the biodegraded PAI films were investigated. FTIR spectra showed structural changes on PAI powders being treated in phosphate buffer solution. The TGA data showed that the thermal stability of PAI powders decreased with the degradation time. The collected degradation products were soluble in water and had absorption in ultraviolet and visible light region. Possible biodegradation mechanism of amino acid-based PAIs was explored.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315569251
      Issue No: Vol. 28, No. 1 (2016)
  • Synthesis, characterization, and dye-sensitized solar cell fabrication
           using solid biopolymer electrolyte membranes
    • Authors: Singh, R; Singh, P. K, Tomar, S. K, Bhattacharya, B.
      Pages: 47 - 54
      Abstract: Solid biopolymer-based electrolytes have been synthesized and characterized. Potassium iodide (KI) and iodine have been added in a biopolymer (sago palm) matrix to develop solid polymer electrolyte. Relationships between electrical and ionic transport parameters have been studied in detail, and the mechanism for ion transport has been proposed. Impedance spectroscopy reveals a significant enhancement in ionic conductivity by salt doping and the conductivity maxima was obtained at 50 wt% of KI concentration and also the system displays Arrhenius behavior. Dielectric phenomenon, mobility, charge carrier density, and diffusion coefficient also supports the conductivity data. Fourier transform infrared spectroscopy confirms the formation of a complex structure, while X-ray diffraction and optical microscopy affirms the complex structure as well as a reduction of crystallinity in the biopolymer electrolyte by salt doping. A dye-sensitized solar cell fabricated using fluorine-doped tin oxide–titanium dioxide (N3 dye)/maximum conducting electrolyte showed the short-circuit current density of 2.91 x 10–4 A cm–2, open-circuit voltage of 0.58 V, and efficiency of 0.57% at 1 sun condition.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315569252
      Issue No: Vol. 28, No. 1 (2016)
  • Novel poly(N-vinyl-2-pyrrolidone) nanocomposites containing
           poly(amide-imide)/aluminum oxide nanostructure hybrid as a filler
    • Authors: Mallakpour, S; Khadem, E.
      Pages: 55 - 63
      Abstract: In this work, the physicochemical properties of poly(N-vinyl-2-pyrrolidone) (PVP) reinforced with the poly(amide–imide)/alumina nanocomposite (PAN) under sonochemical treatment were studied. In the process of manufacturing PAN, the surface of alumina nanoparticles was grafted with 15 wt% of the bioactive dicarboxylic acid based on amino acid, and an amount of 10 wt% of this modified nanoparticle was loaded into the poly(amide–imide) using some powerful ultrasound irradiation. Subsequently, in order to prepare the PVP-PAN, various contents (2, 4, and 6 wt%) of the PANs were incorporated into the PVP matrix. The structure morphology and the physical properties of the obtained PVP/PANs were analyzed by Fourier transform infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis, field-emission scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. The data obtained from the thermal analysis of PVP/PANs indicated their noteworthy thermal stability, thereby implying the complete miscibility between PVP and the PAN hybrid.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315570399
      Issue No: Vol. 28, No. 1 (2016)
  • Preparation, characterization, and properties of poly(thioether imide)s
           from isomeric bis(chlorophthalimide)s and bisthiophenols
    • Authors: Liu, J; Chen, G, Fang, X.
      Pages: 64 - 74
      Abstract: A series of isomeric poly(thioether imide)s (PTIs) containing thioether linkages were prepared by aromatic nucleophilic substitution reaction of isomeric bis(chlorophthalimide)s (BCPIs) and bisthiophenols. The glass transition temperatures (T gs) of the isomeric PTIs were 190–264°C, the 5% weight loss temperature (T 5%) reached up to 441–508°C under nitrogen and 472–520°C in air atmospheres, respectively. It was found that the T g values of the PTIs from three isomeric BCPIs with the same bisthiophenol increased in the order of 4,4'-BCPI < 3,4'-BCPI < 3,3'-BCPI, while the T 5% values gradually decreased in the order of 4,4'-BCPI > 3,4'-BCPI > 3,3'-BCPI. Flexible films that could be cast from the polymer solutions exhibited good mechanical properties with tensile strengths of 91–121 MPa, elongations at break of 8–12%, and tensile moduli of 2.2–2.6 GPa. The minimum melt viscosity of isomeric PTIs decreased with increasing the content of asymmetric 3,4'-substituted phthalimide unit, and the PTI (2c) showed the lowest melt viscosity about 760 Pa·s at 264°C among these isomeric polymers.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315570400
      Issue No: Vol. 28, No. 1 (2016)
  • Comparative analysis of poly(N-methylpyrrole) and its titanium dioxide
           nanocomposite film formations against equivalent electrical circuit model
           for the their corrosion-inhibition effects
    • Authors: Ates, M; Kamer, L, Ozkan, H.
      Pages: 75 - 84
      Abstract: Conducting polymers have been used for many years as coating materials against corrosion. However, the coated materials absorb water over time resulting in reduction of resistivity and anticorrosion properties. In this study, poly(N-methylpyrrole) (P(N-MPy)) and P(N-MPy)/titanium dioxide ((TiO2) nanocomposite films were synthesized in 0.5 M oxalic acid solution on Al 1050 electrode by chronoamperometric method. The modified electrodes were characterized by scanning electron microscopy–energy dispersive X-ray analysis, Fourier transform infrared–attenuated transmission reflectance, electrochemical impedance spectroscopy (EIS), and Tafel extrapolation techniques. The corrosion tests results were obtained in 3.5% sodium chloride (NaCl) solution by Tafel plots. In addition, the equivalent electrical circuit model of P(N-MPy) and P(N-MPy)/TiO2 nanocomposite films were investigated in 3.5% NaCl solution at different time periods. The EIS study of the polymer and nanocomposite were analyzed by Matlab program and for the first time Tina, the equivalent electrical circuits program, was used.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315571682
      Issue No: Vol. 28, No. 1 (2016)
  • The role of hydrophilic organoclay in morphology development of
           poly(butylene terephthalate)/polypropylene blends
    • Authors: Hajibaba, A; Masoomi, M, Nazockdast, H.
      Pages: 85 - 95
      Abstract: This work is concerned with the effect of hydrophilic organoclay on morphology development of poly(butylene terephthalate) (PBT)/polypropylene (PP) blends. The concentration of nanoclays is varied from 1, 3, and 5 phr of polymer blend. Morphological analysis of nanocomposites shows a pronounced refinement of phase morphology with the reduction of droplet size, as compared to neat PBT/PP blend. With the aid of transmission electron microscopy, X-ray diffractometry, and rheological measurements, it is found that organoclays are exclusively located in PBT matrix and at the interface. The nonhomogeneous distribution of organoclays at the interface results in coalescence suppression of droplets and reduction of interfacial tension. Moreover, viscosity and elasticity of matrix are increased with the confinement of organoclays in PBT, which ends up with easier breakup of droplets. According to our research, using nanoclay changes the elasticity ratio of phases that affects capillary number and morphology of the blend. Our calculation indicates that the minimum size of dispersed droplets occurs at elasticity ratio of 1.92.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315571683
      Issue No: Vol. 28, No. 1 (2016)
  • Preparation and characterization of cyanate/epoxy foam
    • Authors: Fan, C; Tian, C, Chen, K, Gao, X, Jia, X, Wang, J.
      Pages: 96 - 109
      Abstract: A new type of cyanate (CE)/epoxy (EP) foam with bisphenol-A dicyanate ester prepolymer and diglycidyl ether of bisphenol-A (BADCy/DGEBA) has been successfully prepared through a two-step process. The structure and properties of CE/EP foam were studied. The results reveal that the CE/EP foams, with relatively uniform cell structure, were composed of closed cells as confirmed by scanning electron microscopy. The compressive strength increased from 0.507 MPa to 3.021 MPa, and the compressive modulus (E) increased from 15 MPa to 123 MPa as the density increased from 0.103 g cm–3 to 0.305 g cm–3. Dynamic mechanical analysis revealed that the CE/EP foams possessed a high glass transition temperature (T g) (203°C) and that density had only a little impact on T g. Moreover, the excellent thermal stability presented with the onset of weight loss taken at 5% value was above 320°C, and the residual weight of the foam was more than 21.6% at 800°C. With increase in the density of CE/EP foams, the dielectric constants () gradually decreased. For the foam with density of = 0.162 g cm–3, the value of was as low as 2.28 at the frequency of 10 kHz.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315573337
      Issue No: Vol. 28, No. 1 (2016)
  • Synthesis and properties of a new halogen-free flame-retardant epoxy resin
           curing agent
    • Authors: Liang, B; Wang, G, Hong, X, Long, J, Tsubaki, N.
      Pages: 110 - 118
      Abstract: A novel intumescent flame-retardant curing agent, poly-(meta-xylylenediamine spirocyclic pentaerythritol bisphosphonate) (PMXSPB), was synthesized and subsequently characterized using Fourier transform infrared, proton nuclear magnetic resonance, and mass spectroscopies. PMXSPB was used as a flame-retardant and curing agent for preparing halogen-free flame-retarded epoxy (EP) resins. The thermal stability, mechanical properties, flame resistance, and morphology of the char layer of flame-retarded EP resins were investigated using thermogravimetric analysis, tensile and Charpy impact tests, limiting oxygen index (LOI), the UL94 test, and scanning electron microscopy, respectively. The results demonstrated that the addition of PMXSPB improved the flame resistance of EP resin composites, and the residual char ratio at 600°C was significantly increased. The flame-retarded composites filling with 3.01% phosphorus content (EP 100 g and PMXSPB 35 g) exhibited the best combination of properties, including a higher glass transition temperature (147°C), good thermal stability, an initial weight loss temperature of 269°C, and an LOI of 31.2. The vertical burning test reached the UL94 V-0 level, and the tensile and impact strengths were 51 MPa and 4.8 kJ m–2, respectively.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315604036
      Issue No: Vol. 28, No. 1 (2016)
  • Effect of monomer chemical structures on the cell structures and
           properties of cyanate ester foams
    • Authors: Chang, P; Tian, C, Chen, K, Liang, S, Qing, J, Zhu, Y, Jia, X, Wang, J.
      Pages: 119 - 128
      Abstract: Cyanate ester (CE) foams with different chemical structures were prepared using bisphenol A dicyanate ester (BADCy), bisphenol E dicyanate ester (BECy), and tetramethyl bisphenol F dicyanate ester (TBFDCy) as monomers, through a two-step process. Rheological tests were performed to investigate the optimal conditions for the preparation of these foams. The results of morphology by scanning electron microscopy showed that cells are in the form of nearly spherical shape in foams from TBFDCy and BADCy and oval in foam from BECy. The thermal properties of the three CE foams were studied by methods of dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and thermogravimetry/differential thermogravimetry analysis. The glass transition temperature (T g) obtained from DMA tests are 274, 264, and 241°C for the foams from TBFDCy, BADCy, and BECy, respectively, which are apparently higher than that tested by DSC method. The T g, compressive properties, and thermal stabilities of the foams are improved after the introduction of the alkyl-substituent groups to the same aromatic ring of –OCN functionality, and the chemical structure–properties relationships are explained according to the monomer chemical structures.
      PubDate: 2016-01-12T22:31:21-08:00
      DOI: 10.1177/0954008315617816
      Issue No: Vol. 28, No. 1 (2016)
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