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Assessing the impact of concurrent high-fructose and highsaturated fat diets on pediatric metabolic syndrome:A review
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作者 Manuel Alejandro Vargas-Vargas Marcela González-Montoya +4 位作者 Olin Torres-Isidro Claudia Isabel García-Berumen Omar Ortiz-Avila Elizabeth Calderón-Cortés Christian Cortés-Rojo 《World Journal of Clinical Pediatrics》 2024年第2期62-79,共18页
High-saturated fat(HF)or high-fructose(HFr)consumption in children predispose them to metabolic syndrome(MetS).In rodent models of MetS,diets containing individually HF or HFr lead to a variable degree of MetS.Neverth... High-saturated fat(HF)or high-fructose(HFr)consumption in children predispose them to metabolic syndrome(MetS).In rodent models of MetS,diets containing individually HF or HFr lead to a variable degree of MetS.Nevertheless,simultaneous intake of HF plus HFr have synergistic effects,worsening MetS outcomes.In children,the effects of HF or HFr intake usually have been addressed individually.Therefore,we have reviewed the outcomes of HF or HFr diets in children,and we compare them with the effects reported in rodents.In humans,HFr intake causes increased lipogenesis,hypertriglyceridemia,obesity and insulin resistance.On the other hand,HF diets promote low grade-inflammation,obesity,insulin resistance.Despite the deleterious effects of simultaneous HF plus HFr intake on MetS development in rodents,there is little information about the combined effects of HF plus HFr intake in children.The aim of this review is to warn about this issue,as individually addressing the effects produced by HF or HFr may underestimate the severity of the outcomes of Western diet intake in the pediatric population.We consider that this is an alarming issue that needs to be assessed,as the simultaneous intake of HF plus HFr is common on fast food menus. 展开更多
关键词 FRUCTOSE saturated fat Metabolic syndrome Insulin resistance Type 2 diabetes Ultra processed foods Children Obesity DYSLIPIDEMIA Non-alcoholic fatty liver disease
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Long-term stability of gentamicin sulfate-ethylenediaminetetraacetic acid disodium salt (EDTA-Na_2) solution for catheter locks 被引量:3
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作者 Anne-Sophie Fiolet Elise Jandot +7 位作者 Pauline Doucey Coralie Crétet Célia Brunel Christine Pivot Jean-Marc Ghigo Christophe Beloin David Lebeaux Fabrice Pirot 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2018年第6期386-393,共8页
A lock solution composed of gentamicin sulfate(5 mg/mL) and ethylenediaminetetraacetic acid disodium salt(EDTA-Na2, 30 mg/mL) could fully eradicate in vivo bacterial biofilms in totally implantable venous access ports... A lock solution composed of gentamicin sulfate(5 mg/mL) and ethylenediaminetetraacetic acid disodium salt(EDTA-Na2, 30 mg/mL) could fully eradicate in vivo bacterial biofilms in totally implantable venous access ports(TIVAP). In this study, fabrication, conditioning and sterilization processes of antimicrobial lock solution(ALS) were detailed and completed by a stability study. Stability of ALS was conducted for12 months in vial(25 °C 7 2 °C, 60% 7 5% relative humidity(RH), and at 40 °C 7 2 °C, RH 75% 7 5%)and for 24 h and 72 h in TIVAP(40 °C 7 2 °C, RH 75% 7 5%). A stability indicating HPLC assay with UV detection for simultaneous quantification of gentamicin sulfate and EDTA-Na2 was developed. ALS was assayed by ion-pairing high performance liquid chromatography(HPLC) needing gentamicin derivatization, EDTA-Na2 metallocomplexation of samples and gradient mobile phase. HPLC methods to separate four gentamicin components and EDTA-Na2 were validated. Efficiency of sterility procedure and conditioning of ALS was confirmed by bacterial endotoxins and sterility tests. Physicochemical stability of ALS was determined by visual inspection, osmolality, pH, and sub-visible particle counting. Results confirmed that the stability of ALS in vials was maintained for 12 months and 24 h and 72 h in TIVAP. 展开更多
关键词 Gentamicin-EDTA-Na2 loaded antimicrobial lock solution Pharmaceutical COMPOUNDING Stability indicating HPLC assay method Totally implantable VENOUS access ports
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Efficient removal of Al(Ⅲ)and P507 from high concentration MgCl_(2)solution based on in-situ reaction strategy
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作者 Qiang WANG Meng WANG +3 位作者 Zong-yu FENG Yong-qi ZHANG Xiao-wei HUANG Xiang-xin XUE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2024年第9期3042-3053,共12页
For a highly efficient recycling of a wastewater containing a high concentration of MgCl_(2),Al(Ⅲ)and P507 were scheduled to be removed in advance.In this study,the in-situ removal of Al(Ⅲ)and P507 from a high conce... For a highly efficient recycling of a wastewater containing a high concentration of MgCl_(2),Al(Ⅲ)and P507 were scheduled to be removed in advance.In this study,the in-situ removal of Al(Ⅲ)and P507 from a high concentration MgCl_(2)solution at different pH values and Al/P molar ratios was investigated.The results showed that P507 formed organic complexes of Al_(x)(OH)_y^(Z+)-P507 at pH of 2.0-4.0.At pH of 4.0-5.0,Al(Ⅲ)precipitated and transferred into Al(OH)_(3)with a flocculent amorphous morphology.Active sites on the Al(OH)_(3)surface enhanced the removal efficiency of P507.At pH of 6.0-6.5,Al(Ⅲ)and Mg(Ⅱ)formed layered crystalline Al(OH)_(3)and MgAl_(2)(OH)_(8with)small pore channels and fewer active sites,resulting in a reduced removal efficiency of P507.When the Al/P molar ratio exceeded 13 and the pH was between 4.0 and 5.0,the removal rates of both Al(Ⅲ)and P507 were higher than98%,while the concentration loss of Mg(Ⅱ)was only 0.2%-0.9%. 展开更多
关键词 in-situ removal AL(III) P507 MgCl_(2)solution pH Al/P molar ratio
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Decay Mode Solutions to (2 + 1)-Dimensional Burgers Equation, Cylindrical Burgers Equation and Spherical Burgers Equation 被引量:1
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作者 Xiangzheng Li Jinliang Zhang Mingliang Wang 《Journal of Applied Mathematics and Physics》 2017年第5期1009-1015,共7页
Three (2 + 1)-dimensional equations—Burgers equation, cylindrical Burgers equation and spherical Burgers equation, have been reduced to the classical Burgers equation by different transformation of variables respecti... Three (2 + 1)-dimensional equations—Burgers equation, cylindrical Burgers equation and spherical Burgers equation, have been reduced to the classical Burgers equation by different transformation of variables respectively. The decay mode solutions of the Burgers equation have been obtained by using the extended -expansion method, substituting the solutions obtained into the corresponding transformation of variables, the decay mode solutions of the three (2 + 1)-dimensional equations have been obtained successfully. 展开更多
关键词 DECAY mode solution (2 %PLUS% 1)-Burgers EQUATION (2 %PLUS% 1)-Cylindrical BURGERS EQUATION (2 %PLUS% 1)-Spherical BURGERS EQUATION Transformation of Variables Extended (G'/G)-Expansion Method
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Ti_(3)AlC_(2−y)N_(y) carbonitride MAX phase solid solutions with tunable mechanical,thermal,and electrical properties
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作者 Weiwei Zhang Shibo Li +3 位作者 Shukai Fan Xuejin Zhang Xiachen Fan Guoping Bei 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2024年第9期1473-1481,共9页
Changing the N content in the Ti_(3)AlC_(2−y)N_(y) MAX phase solid solutions allows for the fine-tuning of their properties.However,systematic studies on the synthesis and properties of Ti_(3)AlC_(2−y)N_(y) solid solu... Changing the N content in the Ti_(3)AlC_(2−y)N_(y) MAX phase solid solutions allows for the fine-tuning of their properties.However,systematic studies on the synthesis and properties of Ti_(3)AlC_(2−y)N_(y) solid solution bulks have not been reported thus far.Here,previously reported Ti_(3)AlC_(2−y)N_(y) solid solution bulks(y=0.3,0.5,0.8,and 1.0)were synthesized via hot pressing of their powder counterparts under optimized conditions.The prepared Ti_(3)AlC_(2−y)N_(y) bulks are dense and have a fine microstructure with grain sizes of 6–8μm.The influence of the N content on the mechanical properties,electrical conductivities,and coefficients of thermal expansion(CTEs)of the prepared Ti_(3)AlC_(2−y)N_(y) bulk materials was clarified.The flexural strength and Vickers hardness values increased with increasing N content,suggesting that solid solution strengthening effectively improved the mechanical properties of Ti_(3)AlC_(2−y)N_(y).Ti_(3)AlCN(y=1)had the highest Vickers hardness and flexural strength among the studied samples,reaching 5.54 GPa and 550 MPa,respectively.However,the electrical conductivity and CTEs of the Ti_(3)AlC_(2−y)N_(y) solid solutions decreased with increasing N content,from 8.93×10^(−6) to 7.69×10^(−6) K^(−1) and from 1.33×10^(6) to 0.95×10^(6) S/m,respectively.This work demonstrated the tunable properties of Ti_(3)AlC_(2−y)N_(y) solid solutions with varying N contents and widened the MAX phase family for fundamental studies and applications. 展开更多
关键词 MAX solid solutions Ti_(3)AlC_(2y)N_(y) microstructure mechanical properties electrical conductivity thermal expansion
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Bifurcations, Analytical and Non-Analytical Traveling Wave Solutions of (2 + 1)-Dimensional Nonlinear Dispersive Boussinesq Equation
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作者 Dahe Feng Jibin Li Airen Zhou 《Applied Mathematics》 2024年第8期543-567,共25页
For the (2 + 1)-dimensional nonlinear dispersive Boussinesq equation, by using the bifurcation theory of planar dynamical systems to study its corresponding traveling wave system, the bifurcations and phase portraits ... For the (2 + 1)-dimensional nonlinear dispersive Boussinesq equation, by using the bifurcation theory of planar dynamical systems to study its corresponding traveling wave system, the bifurcations and phase portraits of the regular system are obtained. Under different parametric conditions, various sufficient conditions to guarantee the existence of analytical and non-analytical solutions of the singular system are given by using singular traveling wave theory. For certain special cases, some explicit and exact parametric representations of traveling wave solutions are derived such as analytical periodic waves and non-analytical periodic cusp waves. Further, two-dimensional wave plots of analytical periodic solutions and non-analytical periodic cusp wave solutions are drawn to visualize the dynamics of the equation. 展开更多
关键词 (2 %PLUS% 1)-Dimensional Nonlinear Dispersive Boussinesq Equation BIFURCATIONS Phase Portrait Analytical Periodic Wave solution Periodic Cusp Wave solution
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MULTIPLICITY OF NORMALIZED SOLUTIONS FOR THE FRACTIONAL SCHR?DINGER-POISSON SYSTEM WITH DOUBLY CRITICAL GROWTH
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作者 孟禹希 贺小明 《Acta Mathematica Scientia》 SCIE CSCD 2024年第3期997-1019,共23页
In this paper,we are concerned with solutions to the fractional Schrodinger-Poisson system■ with prescribed mass ∫_(R^(3))|u|^(2)dx=a^(2),where a> 0 is a prescribed number,μ> 0 is a paremeter,s ∈(0,1),2 <... In this paper,we are concerned with solutions to the fractional Schrodinger-Poisson system■ with prescribed mass ∫_(R^(3))|u|^(2)dx=a^(2),where a> 0 is a prescribed number,μ> 0 is a paremeter,s ∈(0,1),2 <q <2_(s)^(*),and 2_(s)^(*)=6/(3-2s) is the fractional critical Sobolev exponent.In the L2-subcritical case,we show the existence of multiple normalized solutions by using the genus theory and the truncation technique;in the L^(2)-supercritical case,we obtain a couple of normalized solutions by developing a fiber map.Under both cases,to recover the loss of compactness of the energy functional caused by the doubly critical growth,we need to adopt the concentration-compactness principle.Our results complement and improve upon some existing studies on the fractional Schrodinger-Poisson system with a nonlocal critical term. 展开更多
关键词 fractional Schrodinger-Poisson system normalized solutions variational methods L^(2)-subcritical L^(2)-supercritical
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Resonant multiple wave solutions to some integrable soliton equations
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作者 Jian-Gen Liu Xiao-Jun Yang Yi-Ying Feng 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第11期92-98,共7页
To transform the exponential traveling wave solutions to bilinear differential equations, a sufficient and necessary condition is proposed. Motivated by the condition, we extend the results to the(2+1)-dimensional Kad... To transform the exponential traveling wave solutions to bilinear differential equations, a sufficient and necessary condition is proposed. Motivated by the condition, we extend the results to the(2+1)-dimensional Kadomtsev–Petviashvili(KP) equation, the(3+1)-dimensional generalized Kadomtsev–Petviashvili(g-KP) equation, and the B-type Kadomtsev–Petviashvili(BKP) equation. Aa a result, we obtain some new resonant multiple wave solutions through the parameterization for wave numbers and frequencies via some linear combinations of exponential traveling waves. Finally, these new resonant type solutions can be displayed in graphs to illustrate the resonant behaviors of multiple wave solutions. 展开更多
关键词 linear superposition principle RESONANT MULTIPLE wave solutions (2%PLUS%1)-dimensional KadomtsevPetviashvili(KP) equation (3%PLUS%1)-dimensional g-KP and BKP equations
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CO2 Transformation at Controlled Temperature with Lithium Hydroxide Solution and Metallic Lithium
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作者 Elizabeth Teresita Romero-Guzmán José Luis Iturbe-García 《Journal of Minerals and Materials Characterization and Engineering》 2024年第3期189-203,共15页
This paper presents a study on CO<sub>2</sub> atmospheric transformation which was reacted directly with lithium hydroxide solution and metallic lithium. This solution was obtained through the reaction bet... This paper presents a study on CO<sub>2</sub> atmospheric transformation which was reacted directly with lithium hydroxide solution and metallic lithium. This solution was obtained through the reaction between metallic lithium and deionized water where hydrogen is produced and by exposing the metal at ambient conditions. In the transformation process, atmospheric CO<sub>2</sub> gas reacts directly with LiOH solution, in both cases, the CO<sub>2</sub> transformation kinetics was different. For this purpose, reactions between CO<sub>2</sub> and LiOH solution were carried out under controlled temperature and the second process only with metallic lithium, which was exposed at room temperature, however, in these two processes lithium carbonate oxide was formed and identified. According to the results, the efficiency in CO<sub>2</sub> transformation is a function of temperature value which was variable until completely obtaining the by-product, its XRD characterization indicated the formation only of Li<sub>2</sub>CO<sub>3</sub> in both procedures. Under laboratory conditions lithium compounds selectively reacted with CO<sub>2</sub>. In the same way, there is an alternative procedure to obtain LiOH and Li<sub>2</sub>CO<sub>3</sub> for different applications in various areas. 展开更多
关键词 Metallic Lithium Lithium Hydroxide solution Hydrogen Atmospheric CO<sub>2</sub> Transformation Lithium Carbonate
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Extending the solid solution range of sodium ferric pyrophosphate:Off‐stoichiometric Na_(3)Fe(2.5)(P_(2)O_(7))_(2)as a novel cathode for sodium‐ion batteries 被引量:1
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作者 Xiang jun Pu Kunran Yang +6 位作者 Zibing Pan Chunhua Song Yangyang Lai Renjie Li Zheng‐Long Xu Zhongxue Chen Yuliang Cao 《Carbon Energy》 SCIE EI CAS CSCD 2024年第4期128-139,共12页
Iron‐based pyrophosphates are attractive cathodes for sodium‐ion batteries due to their large framework,cost‐effectiveness,and high energy density.However,the understanding of the crystal structure is scarce and on... Iron‐based pyrophosphates are attractive cathodes for sodium‐ion batteries due to their large framework,cost‐effectiveness,and high energy density.However,the understanding of the crystal structure is scarce and only a limited candidates have been reported so far.In this work,we found for the first time that a continuous solid solution,Na_(4−α)Fe_(2+α)_(2)(P_(2)O_(7))_(2)(0≤α≤1,could be obtained by mutual substitution of cations at center‐symmetric Na3 and Na4 sites while keeping the crystal building blocks of anionic P_(2)O_(7) unchanged.In particular,a novel off‐stoichiometric Na_(3)Fe(2.5)(P_(2)O_(7))_(2)is thus proposed,and its structure,energy storage mechanism,and electrochemical performance are extensively investigated to unveil the structure–function relationship.The as‐prepared off‐stoichiometric electrode delivers appealing performance with a reversible discharge capacity of 83 mAh g^(−1),a working voltage of 2.9 V(vs.Na^(+)/Na),the retention of 89.2%of the initial capacity after 500 cycles,and enhanced rate capability of 51 mAh g^(−1)at a current density of 1600 mA g^(−1).This research shows that sodium ferric pyrophosphate could form extended solid solution composition and promising phase is concealed in the range of Na_(4−α)Fe_(2+α)_(2)(P_(2)O_(7))_(2),offering more chances for exploration of new cathode materials for the construction of high‐performance SIBs. 展开更多
关键词 extending solid‐solution range offstoichiometric Na_(3)Fe_(2.5)(P_(2)O_(7))_(2) sodiumion batteries structure-function relationship
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Localized wave solutions and interactions of the (2+1)-dimensional Hirota-Satsuma-Ito equation
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作者 巩乾坤 王惠 王云虎 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第4期409-416,共8页
This paper studies the(2+1)-dimensional Hirota-Satsuma-Ito equation.Based on an associated Hirota bilinear form,lump-type solution,two types of interaction solutions,and breather wave solution of the(2+1)-dimensional ... This paper studies the(2+1)-dimensional Hirota-Satsuma-Ito equation.Based on an associated Hirota bilinear form,lump-type solution,two types of interaction solutions,and breather wave solution of the(2+1)-dimensional Hirota-Satsuma-Ito equation are obtained,which are all related to the seed solution of the equation.It is interesting that the rogue wave is aroused by the interaction between one-lump soliton and a pair of resonance stripe solitons,and the fusion and fission phenomena are also found in the interaction between lump solitons and one-stripe soliton.Furthermore,the breather wave solution is also obtained by reducing the two-soliton solutions.The trajectory and period of the one-order breather wave are analyzed.The corresponding dynamical characteristics are demonstrated by the graphs. 展开更多
关键词 lump solution rogue wave solution breather wave solution (2%PLUS%1)-dimensional Hirota-Satsuma-Ito equation
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The Periodic Solitary Wave Solutions for the (2 + 1)-Dimensional Fifth-Order KdV Equation
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作者 Xianghua Meng 《Journal of Applied Mathematics and Physics》 2014年第7期639-643,共5页
The (2 + 1)-dimensional fifth-order KdV equation is an important higher-dimensional and higher-order extension of the famous KdV equation in fluid dynamics. In this paper, by constructing new test functions, we invest... The (2 + 1)-dimensional fifth-order KdV equation is an important higher-dimensional and higher-order extension of the famous KdV equation in fluid dynamics. In this paper, by constructing new test functions, we investigate the periodic solitary wave solutions for the (2 + 1)-dimensional fifth-order KdV equation by virtue of the Hirota bilinear form. Several novel analytic solutions for such a model are obtained and verified with the help of symbolic computation. 展开更多
关键词 (2 %PLUS% 1)-Dimensional Fifth-Order KDV Equation Periodic SOLITARY Wave solutions HIROTA BILINEAR Form
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Mn^(2+)对聚N鄄异丙基丙烯酰胺的性能影响 被引量:4
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作者 郭绍芬 陈明清 +2 位作者 陆天虹 周青 黄晓华 《无机化学学报》 SCIE CAS CSCD 北大核心 2005年第5期633-637,共5页
合成了聚N鄄异丙基丙烯酰胺(PNIPAM)与Mn2+的配合物,并用荧光光谱、UV鄄Vis、FTIR、XPS进行了初步表征。说明Mn2+与PNIPAM侧链羰基氧或亚氨基氮原子发生了配位作用。由于Mn2+的发射光谱与PNIPAM激发光谱部分重叠以及Mn2+位于561nm的发... 合成了聚N鄄异丙基丙烯酰胺(PNIPAM)与Mn2+的配合物,并用荧光光谱、UV鄄Vis、FTIR、XPS进行了初步表征。说明Mn2+与PNIPAM侧链羰基氧或亚氨基氮原子发生了配位作用。由于Mn2+的发射光谱与PNIPAM激发光谱部分重叠以及Mn2+位于561nm的发射峰在Mn2+鄄PNIPAM体系发射光谱中消失,说明发生了较好的F觟rster能量传递。因此,在307nm紫外区荧光强度比PNIPAM增强了314%,使该配合物表现出较好的抑菌效果,而此时少量Mn2+对其低临界溶解温度(LCST)影响不大。 展开更多
关键词 MN^2%PLUS% N- PNIPAM VIS XPS
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Hydrogen Permeation Behaviors of X52 Pipeline Steel in NACE A Solution with Saturated H_2S/CO_2
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作者 张智 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第4期657-661,共5页
With the aid of hydrogen permeating devices, the hydrogen permeation behaviors of X52 pipeline steel in NACE A solution with saturated H2S/CO2 were studied under the conditions of different ambient temperatures and pH... With the aid of hydrogen permeating devices, the hydrogen permeation behaviors of X52 pipeline steel in NACE A solution with saturated H2S/CO2 were studied under the conditions of different ambient temperatures and pH values, and the hydrogen permeation behaviors of X52 pipeline steel in weld seam zone were comparatively studied. The experimental results show that the hydrogen permeation coefficient value is directly proportional to the time required for reaching the saturation anode current and inversely proportional to the saturation anode current, and the hydrogen permeation coefficient is influenced by the corrosion scales; the temperature is directly proportional to the saturation anode current, and the hydrogen permeation coefficient is influenced by the temperature and corrosion scales, heat-affected zone and matrix zone in NACE A solution with saturated H2S/CO2 at normal temperature. The hydrogen permeation coefficient in weld seam zone is larger than that in heat-affected zone which is further larger than that in matrix zone. 展开更多
关键词 pH value temperature NACE A solution H2S/co2 environment weld seam pipeline steel hydrogen permeation
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Ion Mobility in the Fluorite Solid Solutions 50PbF<sub>2</sub>–30BiF<sub>3</sub>–20K(Na)F According to <sup>19</sup>F, <sup>23</sup>Na NMR Data
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作者 V.Ya. Kavun A.B. Slobodyuk +4 位作者 I.A. Telin R.M. Yaroshenko I.G. Maslennikova V.K. Goncharuk V.I. Kharchenko 《Advances in Materials Physics and Chemistry》 2012年第4期71-73,共3页
Ion mobility in solid solutions of the fluorite structure 50Pb2–30BiF3–20KF (I) and 50Pb2–30BiF3–20NaF (II) was studied by NMR method. Analysis of 19F, 23Na NMR spectra made it possible to reveal the character of ... Ion mobility in solid solutions of the fluorite structure 50Pb2–30BiF3–20KF (I) and 50Pb2–30BiF3–20NaF (II) was studied by NMR method. Analysis of 19F, 23Na NMR spectra made it possible to reveal the character of ion motions in the fluoride and sodium sublattices with temperature variation, to determine the types and temperature ranges in which they took place. It was found that the dominant form of ionic mobility in the samples I and II above 380 K was the diffusion of fluoride and sodium ions. According to preliminary results of electro-physical studies, the conductivity reached values of ~ 2×10–2 – 10–3 S/cm above 500 K. The solid solutions I and II can be recommended as a basis for use in the development of new functional materials. 展开更多
关键词 Solid solutions 50PbF230BiF320K(Na)F Ion Mobility IONIC Conductivity 19F 23Na NMR spectra functional materials
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Exact solutions of a(2+1)-dimensional extended shallow water wave equation 被引量:1
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作者 Feng Yuan Jing-Song He Yi Cheng 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第10期237-244,共8页
We give the bilinear form and n-soliton solutions of a(2+1)-dimensional [(2+1)-D] extended shallow water wave(eSWW) equation associated with two functions v and r by using Hirota bilinear method. We provide soli... We give the bilinear form and n-soliton solutions of a(2+1)-dimensional [(2+1)-D] extended shallow water wave(eSWW) equation associated with two functions v and r by using Hirota bilinear method. We provide solitons, breathers,and hybrid solutions of them. Four cases of a crucial φ(y), which is an arbitrary real continuous function appeared in f of bilinear form, are selected by using Jacobi elliptic functions, which yield a periodic solution and three kinds of doubly localized dormion-type solution. The first order Jacobi-type solution travels parallelly along the x axis with the velocity(3k12+ α, 0) on(x, y)-plane. If φ(y) = sn(y, 3/10), it is a periodic solution. If φ(y) = cn(y, 1), it is a dormion-type-Ⅰ solutions which has a maximum(3/4)k1p1 and a minimum-(3/4)k1p1. The width of the contour line is ln■. If φ(y) = sn(y, 1), we get a dormion-type-Ⅱ solution(26) which has only one extreme value-(3/2)k1p1. The width of the contour line is ln■. If φ(y) = sn(y, 1/2)/(1 + y2), we get a dormion-type-Ⅲ solution(21) which shows very strong doubly localized feature on(x, y) plane. Moreover, several interesting patterns of the mixture of periodic and localized solutions are also given in graphic way. 展开更多
关键词 (2%PLUS%1)-dimensional EXTENDED shallow water wave equation HIROTA BILINEAR method dormion-type solution
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Periodic Solitary Wave Solutions of the (2 + 1)-Dimensional Variable-Coefficient Caudrey-Dodd-Gibbon-Kotera-Sawada Equation 被引量:2
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作者 Yang Zhou 《Open Journal of Applied Sciences》 2020年第3期60-68,共9页
In this paper, through symbolic computations, we obtain two exact solitary wave solitons of the (2 + l)-dimensional variable-coefficient Caudrey-Dodd- Gibbon-Kotera-Sawada equation. We study basic properties of l-peri... In this paper, through symbolic computations, we obtain two exact solitary wave solitons of the (2 + l)-dimensional variable-coefficient Caudrey-Dodd- Gibbon-Kotera-Sawada equation. We study basic properties of l-periodic solitary wave solution and interactional properties of 2-periodic solitary wave solution by using asymptotic analysis. 展开更多
关键词 (2 %PLUS% l)-Dimensional vc-CDGKS EQUATION SOLITARY WAVE solution Period-ic SOLITARY WAVE solution Asymptotic Analysis
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Doping of Ceria-Zirconia Solid Solution with Rare-earth Elements
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作者 HU Yu-cai FENG Chang-gen WANG Li-qiong WANG Ya-jun 《合成化学》 CAS CSCD 2004年第z1期136-136,共1页
关键词 CERIA-ZIRCONIA SOLID solution doping Ce0.6Zr0.3M0.1O2 (M=Y La Pr Tb) three- WAY CATALYST
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New Strategy for Chemically Attachment of Imine Group on Multi-Walled Carbon Nanotubes Surfaces: Synthesis, Characterization and Study of DC Electrical Conductivity
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作者 Omar Al-Shuja’a Abeer Obeid +2 位作者 Yousuf El-Shekeil Mohamed Hashim Zinab Al-Washali 《Journal of Materials Science and Chemical Engineering》 2017年第2期11-21,共11页
This paper used a new approach of preparing poly-composites by covalent linkage between the MWCNT’s by imine group. The Poly (Imine)/MWCNT Composite was synthesized by the solution blending method from reacted amino ... This paper used a new approach of preparing poly-composites by covalent linkage between the MWCNT’s by imine group. The Poly (Imine)/MWCNT Composite was synthesized by the solution blending method from reacted amino multi-walled carbon nanotubes (MWCNT-NH2) with Terephthalaldehyde (TPAL). The obtained poly-composite was characterized by FT-IR, UV-Vis, XRD, TEM, SEM, TGA, DSC and DC electrical conductivity. The formation of Poly (Imine)/MWCNT composite was confirmed. The DC electrical conductivity of poly-composites was within the range 2.3 × 10–4 - 5.3 × 10–4 S/cm due to the interaction between the nanotubes. 展开更多
关键词 Amino Multi-Walled Carbon Nanotubes (MWCNT-NH2) Polymer Nanocomposites FUNCTIONALIZATION solution Blending IMINE Terephthalaldehyde FTIR SEM TEM XRD UV DSC TGA and DC Electrical Conductivity
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添加水蒸气对CH_4-CO_2重整催化剂Ni/CeO_2-ZrO_2-Al_2O_3中Ni组分结构影响的EXAFS研究 被引量:3
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作者 李春林 伏义路 +4 位作者 孟明 卞国柱 谢亚宁 胡天斗 张静 《核技术》 CAS CSCD 北大核心 2002年第10期879-882,共4页
采用水热合成法制备了Ni/CeO2 -ZrO2 -Al2 O3催化剂。进行了添加和不添加水蒸气的CH4 -CO2 催化重整反应 ,测量了积碳量 ,并用EXAFS手段测试了催化剂Ni的K吸收边。结果表明 ,反应前后最近邻Ni-Ni配位距离无明显变化 ,而配位数却变化明... 采用水热合成法制备了Ni/CeO2 -ZrO2 -Al2 O3催化剂。进行了添加和不添加水蒸气的CH4 -CO2 催化重整反应 ,测量了积碳量 ,并用EXAFS手段测试了催化剂Ni的K吸收边。结果表明 ,反应前后最近邻Ni-Ni配位距离无明显变化 ,而配位数却变化明显。无水蒸气反应后Ni-Ni配位数有较大幅度的减少 ;而添加了水蒸气 ,Ni-Ni配位数比反应前减少幅度小。水蒸气的添加能减少积碳量 ,稳定催化剂中Ni的结构 。 展开更多
关键词 CH4 co2 CEO2 ZRO2 Al2O3 Ni EXAFS
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