• Complex
  • Title
  • Author
  • Keyword
  • Abstract
  • Scholars
Search
Sort by:
Default
  • Default
  • Title
  • Year
  • WOS Cited Count
  • Impact factor
  • Ascending
  • Descending
< Page ,Total 33 >
Dual-level stress plateaus in honeycombs subjected to impact loading: perspectives from bucklewaves, buckling and cell-wall progressive folding EI Scopus CSCD SCIE
期刊论文 | 2019 , 35 (1) , 70-77 | Acta Mechanica Sinica/Lixue Xuebao
Abstract&Keyword Cite

Abstract :

Dual-level stress plateaus (i.e., relatively short peak stress plateaus, followed by prolonged crushing stress plateaus) in metallic hexagonal honeycombs subjected to out-of-plane impact loading are characterized using a combined numerical and analytical study, with the influence of the strain-rate sensitivity of the honeycomb parent material accounted for. The predictions are validated against existing experimental measurements, and good agreement is achieved. It is demonstrated that honeycombs exhibit dual-level stress plateaus when bucklewaves are initiated and propagate in cell walls, followed by buckling and progressive folding of the cell walls. The abrupt stress drop from peak to crushing plateau in the compressive stress versus strain curve can be explained in a way similar to the quasi-static buckling of a clamped plate. The duration of the peak stress plateau is more evident for strain-rate insensitive honeycombs. © 2018, The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature.

Keyword :

Analytical studies Clamped plates Hexagonal honeycomb Honeycomb Impact loadings Parent materials Quasi-static buckling Strain rate sensitivity

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Li, Lang , Zhao, Zhenyu , Zhang, Rui et al. Dual-level stress plateaus in honeycombs subjected to impact loading: perspectives from bucklewaves, buckling and cell-wall progressive folding [J]. | Acta Mechanica Sinica/Lixue Xuebao , 2019 , 35 (1) : 70-77 .
MLA Li, Lang et al. "Dual-level stress plateaus in honeycombs subjected to impact loading: perspectives from bucklewaves, buckling and cell-wall progressive folding" . | Acta Mechanica Sinica/Lixue Xuebao 35 . 1 (2019) : 70-77 .
APA Li, Lang , Zhao, Zhenyu , Zhang, Rui , Han, Bin , Zhang, Qiancheng , Lu, Tian Jian . Dual-level stress plateaus in honeycombs subjected to impact loading: perspectives from bucklewaves, buckling and cell-wall progressive folding . | Acta Mechanica Sinica/Lixue Xuebao , 2019 , 35 (1) , 70-77 .
Export to NoteExpress RIS BibTex
Warm-Dense-Matter State of Iron Generated by Intense Heavy-Ion Beams EI Scopus CPCI-S SCIE
期刊论文 | 2019 , 47 (1) , 853-857 | IEEE Transactions on Plasma Science
Abstract&Keyword Cite

Abstract :

The hydrodynamic behavior of a cylindrical solid target, heated by the intense heavy-ion beams, was simulated. The target was of the LAboratory PlAnetary Science (LAPLAS)-type geometry, as described by Tahir (LAPLAS). An iron target irradiated by the intense heavy-ion beams, with parameters available from the planned High Intensity Accelerator Facility or Facility for Antiproton and Ion Research, Society for Heavy Ion Research, Darmstadt, Germany, will transform to the warm-dense state, similar to the situation that exists in the planet interior. The dependence of the achievable state of iron on the outer-shell material and beam location was investigated with Medusa-code simulations. The simulation results show that the compression of inner iron is significantly influenced by the density-to-mass ratio of the outer-shell material and the location of the beam heating. Using the LAPLAS geometry, a uranium beam of 800 MeV/u, and 1.5x10&#x00B9;&#x00B9; particles per pulse, our simulations show that the warm-dense-matter regime for iron is obtained. Details depend on the yet unknown equation of state and will be measured when this beam intensity is available in a couple of years. IEEE

Keyword :

Code simulation Equation of state Facility for antiproton and ion research High intensity accelerator Hydrodynamic behavior Intense heavy ion beams Planetary science Warm dense matters

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Zhang, Lin , Zhao, Yongtao , Ren, Jieru et al. Warm-Dense-Matter State of Iron Generated by Intense Heavy-Ion Beams [J]. | IEEE Transactions on Plasma Science , 2019 , 47 (1) : 853-857 .
MLA Zhang, Lin et al. "Warm-Dense-Matter State of Iron Generated by Intense Heavy-Ion Beams" . | IEEE Transactions on Plasma Science 47 . 1 (2019) : 853-857 .
APA Zhang, Lin , Zhao, Yongtao , Ren, Jieru , Li, Jianxing , Liu, Wei , Wu, Dong et al. Warm-Dense-Matter State of Iron Generated by Intense Heavy-Ion Beams . | IEEE Transactions on Plasma Science , 2019 , 47 (1) , 853-857 .
Export to NoteExpress RIS BibTex
Local crystallographic shear structures in a[201] extended mixed dislocations of SrTiO3 unraveled by atomic-scale imaging using transmission electron microscopy and spectroscopy. PubMed SCIE
期刊论文 | 2019 , 213 , 245-258 | Faraday discussions
Abstract&Keyword Cite

Abstract :

Recently, extended mixed dislocations were observed at a [001]/(100) low-angle tilt grain boundary of a SrTiO3 bicrystal because of a slight twist between the two crystal parts. The b = a[201]/(100) mixed dislocations at the grain boundary dissociate into three dislocations with Burgers vector b of a/2[101], a[100], and a/2[101], respectively. A structure model has been proposed in particular for the dislocation cores of the two partials with b = a/2[101] based on the high-angle annular dark-field (HAADF) images acquired by scanning transmission electron microscopy (STEM). However, the details of the atomic structure and the chemical composition of the dislocation cores remain unexplored, especially for the b = a[100] dislocation that is evidently disassociated into two b = a/2[101] partial dislocations. In this work, we study the further atomic details of the extended mixed dislocations, in particular the local chemistry, in a SrTiO3 bicrystal using STEM, electron energy loss spectroscopy (EELS), and energy dispersive X-ray (EDX) spectroscopy techniques. By these atomic-scale imaging techniques, we reveal a unique feature for the atomic structure of the b = a[201]/(100) extended mixed dislocation, which we named as local crystallographic shear (LCS) structures. In addition, we identify a rock salt FCC-type TiOx (x = 0.66-1.24) phase at the locations of the extended mixed dislocations. In contrast to the insulating TiO2 phases, the TiOx phase is known to exhibit very low electrical resistivity of only several μΩ cm. In this regard, the extended mixed dislocations of SrTiO3 comprising the FCC TiOx phase may function as the conducting filament in resistive switching processes by completion and disruption of the TiOx phase along the dislocation cores through electrically stimulated redox reactions.

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Du Hongchu , Jia Chun-Lin , Mayer Joachim . Local crystallographic shear structures in a[201] extended mixed dislocations of SrTiO3 unraveled by atomic-scale imaging using transmission electron microscopy and spectroscopy. [J]. | Faraday discussions , 2019 , 213 : 245-258 .
MLA Du Hongchu et al. "Local crystallographic shear structures in a[201] extended mixed dislocations of SrTiO3 unraveled by atomic-scale imaging using transmission electron microscopy and spectroscopy." . | Faraday discussions 213 (2019) : 245-258 .
APA Du Hongchu , Jia Chun-Lin , Mayer Joachim . Local crystallographic shear structures in a[201] extended mixed dislocations of SrTiO3 unraveled by atomic-scale imaging using transmission electron microscopy and spectroscopy. . | Faraday discussions , 2019 , 213 , 245-258 .
Export to NoteExpress RIS BibTex
Metal?Organic Framework-Based Stimuli-Responsive Systems for Drug Delivery EI SCIE PubMed
期刊论文 | 2019 , 6 (1) | Advanced Science
Abstract&Keyword Cite

Abstract :

With the rapid development of nanotechnology, stimuli-responsive nanomaterials have provided an alternative for designing controllable drug delivery systems due to their spatiotemporally controllable properties. As a new type of porous material, metal–organic frameworks (MOFs) have been widely used in biomedical applications, especially drug delivery systems, owing to their tunable pore size, high surface area and pore volume, and easy surface modification. Here, recent progress in MOF-based stimuli-responsive systems is presented, including pH-, magnetic-, ion-, temperature-, pressure-, light-, humidity-, redox-, and multiple stimuli-responsive systems for the delivery of anticancer drugs. The remaining challenges and suggestions for future directions for the rational design of MOF-based nanomedicines are also discussed. © 2018 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keyword :

Biomedical applications Cancer therapy Drug delivery system High surface area Multiple stimulus Recent progress Stimuli-responsive Stimuli-responsive systems

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Cai, Wen , Wang, Junqing , Chu, Chengchao et al. Metal?Organic Framework-Based Stimuli-Responsive Systems for Drug Delivery [J]. | Advanced Science , 2019 , 6 (1) .
MLA Cai, Wen et al. "Metal?Organic Framework-Based Stimuli-Responsive Systems for Drug Delivery" . | Advanced Science 6 . 1 (2019) .
APA Cai, Wen , Wang, Junqing , Chu, Chengchao , Chen, Wei , Wu, Chunsheng , Liu, Gang . Metal?Organic Framework-Based Stimuli-Responsive Systems for Drug Delivery . | Advanced Science , 2019 , 6 (1) .
Export to NoteExpress RIS BibTex
Gram-Scale Production of Graphene Powder via a Quasi-physical Process and Its Application in Electrode Material for Lithium-Ion Battery EI SCIE
期刊论文 | 2019 , 21 (2) | Advanced Engineering Materials
Abstract&Keyword Cite

Abstract :

Graphene powder is an attractive conducting additive for the electrodes of lithium-ion battery (LIB). However, the practical application of graphene is hampered by the lack of reliable methods for its production. Here, the authors report a promising method for the synthesis of graphene powder, which exhibits the functionalities both in gram-scale production and high-quality products. As a validation, the authors show that the introduced graphene matrix can greatly improve the electrochemical activity and cycle stability of the Co3O4 nanoparticles. Typically, when 40 wt% of graphene is introduced, the obtained Co3O4/graphene nanocomposite can stably cycle up to more than 50 cycles with a reversible capacity above 530 mAh g−1. Simultaneously, a limited initial irreversible capacity less than 40 mAh g−1 is also achieved. The attainment of such properties in Co3O4/graphene nanocomposite offers the prospects for the practical applications of graphene in industry for better LIBs. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keyword :

Anode material Conducting additives Electrochemical activities Electrode material exfoliation High-quality products Irreversible capacity Reversible capacity

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Zhang, Yin , Zhu, Xi , Xu, Minwei et al. Gram-Scale Production of Graphene Powder via a Quasi-physical Process and Its Application in Electrode Material for Lithium-Ion Battery [J]. | Advanced Engineering Materials , 2019 , 21 (2) .
MLA Zhang, Yin et al. "Gram-Scale Production of Graphene Powder via a Quasi-physical Process and Its Application in Electrode Material for Lithium-Ion Battery" . | Advanced Engineering Materials 21 . 2 (2019) .
APA Zhang, Yin , Zhu, Xi , Xu, Minwei , Zhou, Chao , Song, Xiaoping , Yang, Sen . Gram-Scale Production of Graphene Powder via a Quasi-physical Process and Its Application in Electrode Material for Lithium-Ion Battery . | Advanced Engineering Materials , 2019 , 21 (2) .
Export to NoteExpress RIS BibTex
Hybridization induced fluorescence enhanced DNA-Ag nanocluster/aptamer probe for detection of prostate-specific antigen EI PubMed SCIE
期刊论文 | 2019 , 175 , 358-364 | Colloids and Surfaces B: Biointerfaces
Abstract&Keyword Cite

Abstract :

In this work, a label-free Ag nanocluster (AgNC)-based fluorescent probe is proposed to detect tumor marker, prostate-specific antigen (PSA). In the experiments, DNA sequences containing segments complemented to different parts of PSA aptamer were used to synthesize DNA-Ag nanoclusters (DNA-AgNC). Some of the obtained specific DNA-AgNC exhibited significant fluorescence increase after hybridization with PSA aptamer. Based on this, a simple DNA-AgNC/aptamer hybridization probe was fabricated for PSA detection using fluorescence quenching, because competitively specific binding between PSA and its aptamer inhibited the fluorescence enhancement effect of PSA aptamer on DNA-AgNC. The sequence of template DNA, pH and salt concentration of binding buffer, and the concentration of aptamer were optimized. Under optimum conditions, the concentration of PSA within the range of 2–150 ng mL−1 with the detection limit of 1.14 ng mL−1 was detected (3σ; n = 7). This approach was also successfully applied to determine PSA in spiked serum samples. As is well known, this was the first report to realize PSA detection using fluorescent AgNC-based probe. This work would provide reference for construction of AgNC-based probes for detecting other proteins. © 2018 Elsevier B.V.

Keyword :

Ag nanoclusters Aptamers Fluorescence enhancement effect Fluorescent probes Hybridization probe Optimum conditions Prostate specific antigen Salt concentration

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Fang, Bi-Yun , An, Jie , Liu, Bo et al. Hybridization induced fluorescence enhanced DNA-Ag nanocluster/aptamer probe for detection of prostate-specific antigen [J]. | Colloids and Surfaces B: Biointerfaces , 2019 , 175 : 358-364 .
MLA Fang, Bi-Yun et al. "Hybridization induced fluorescence enhanced DNA-Ag nanocluster/aptamer probe for detection of prostate-specific antigen" . | Colloids and Surfaces B: Biointerfaces 175 (2019) : 358-364 .
APA Fang, Bi-Yun , An, Jie , Liu, Bo , Zhao, Yuan-Di . Hybridization induced fluorescence enhanced DNA-Ag nanocluster/aptamer probe for detection of prostate-specific antigen . | Colloids and Surfaces B: Biointerfaces , 2019 , 175 , 358-364 .
Export to NoteExpress RIS BibTex
Research on the optical axis of the birefringent crystal rotating in the three dimensional space EI
期刊论文 | 2019 , 181 , 786-795 | Optik
Abstract&Keyword Cite

Abstract :

The beam splitting principle of the Gran-taylor prism as a birefringent crystal is explained. Using the ray tracing method, the angle of refraction of the extraordinary wave together with the direction of the extraordinary ray and its emitting position as a function of the incident angle θ1 and the angle θp between the optical axis and the normal are obtained in three-dimensional space. In order to analyze and discuss the influences of different parameters on the angle of refraction, the direction of the extraordinary ray and its emitting position, computers simulations are performed. If the deviation of θp is set as 5° the biased error of the emitting position is 0.4274⁡mm in the y axis. In order to ensure that the deviation error for the emitting position is within 0.500⁡mm in the x axis, the incident angle should be controlled in a range of [0∘,1.702∘]. This study provides a theoretical and practical guidance for the industrial production of the polarization devices and the research of the polarization interference imaging spectrometer. © 2019 Elsevier GmbH

Keyword :

Angle of refraction Birefringent crystals Extraordinary waves Industrial production Polarization devices Polarization interferences Ray-tracing method Three dimensional space

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Hu, Xiaochen , Ai, Jingjing , Kong, Zhenyu et al. Research on the optical axis of the birefringent crystal rotating in the three dimensional space [J]. | Optik , 2019 , 181 : 786-795 .
MLA Hu, Xiaochen et al. "Research on the optical axis of the birefringent crystal rotating in the three dimensional space" . | Optik 181 (2019) : 786-795 .
APA Hu, Xiaochen , Ai, Jingjing , Kong, Zhenyu , Gao, Peng , Zhang, Shuaiyi , Wang, Xia . Research on the optical axis of the birefringent crystal rotating in the three dimensional space . | Optik , 2019 , 181 , 786-795 .
Export to NoteExpress RIS BibTex
Shock loading simulation using density-graded metallic foam projectiles EI SCIE
期刊论文 | 2019 , 164 | Materials and Design
Abstract&Keyword Cite

Abstract :

Density-graded metallic foam projectiles are proposed for shock loading simulation, with special focus placed upon designing pressure pulses having specific shapes. Experiments are performed to explore the potential of density-graded foam projectiles in generating shock loadings of various pulse shapes. Subsequently, three-dimensional Voronoi foam models with varying gradient profiles along the length direction are constructed for finite element (FE) simulations, which are validated against the experimental data. Then, FE simulations of density-graded foam projectiles impacting a stationary rigid wall are conducted to quantify the effect of density gradient on the shape of the pressure pulse generated and explore the physical mechanisms underlying such effect. It is demonstrated that density gradient affects significantly local crushing stress and local density within the shock front when it propagates from the impact end to the other end of the foam projectile. Inspired by the FE simulation results and the classical Taylor impact model, one-dimensional theoretical model for density-graded foam projectiles is developed to predict the contact force between the projectile and the fixed rigid wall. Finally, the theoretical model is employed to determine the geometry, density gradient, and firing velocity of foam projectiles needed to generate shock loadings with prescribed pulse shapes. © 2018 The Authors

Keyword :

Density gradients Finite element simulations Firing velocity Physical mechanism Pressure pulse Pulse shape design Shock loadings Theoretical modeling

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Li, Lang , Han, Bin , He, Si-Yuan et al. Shock loading simulation using density-graded metallic foam projectiles [J]. | Materials and Design , 2019 , 164 .
MLA Li, Lang et al. "Shock loading simulation using density-graded metallic foam projectiles" . | Materials and Design 164 (2019) .
APA Li, Lang , Han, Bin , He, Si-Yuan , Zhao, Zhen-Yu , Zhang, Rui , Zhang, Qian-Cheng et al. Shock loading simulation using density-graded metallic foam projectiles . | Materials and Design , 2019 , 164 .
Export to NoteExpress RIS BibTex
Fast decomposition of hydrogen peroxide by Zeolitic imidazolate framework-67 crystals EI SCIE
期刊论文 | 2019 , 239 , 94-97 | Materials Letters
Abstract&Keyword Cite

Abstract :

The decomposition of hydrogen peroxide was determined in the neutral solution of ZIF-67 crystals. The fast decomposition of H2O2 can be observed by naked eyes in seconds after mixing the reactants. A crumpled surface was observed for ZIF-67 crystals after the decomposition reaction. The decomposition reaction was found to follow the first-order kinetics. Temperature-dependent studies calculated that the activation energy was 37 kJ mol−1. Based on the obtained results, a possible mechanism was proposed. © 2018 Elsevier B.V.

Keyword :

Decomposition reaction Fast decomposition First order kinetics Functional Possible mechanisms Temperature dependent Zeolitic imidazolate frameworks ZIF-67

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Chen, Wei , Chen, Fangming , Zhang, Gao et al. Fast decomposition of hydrogen peroxide by Zeolitic imidazolate framework-67 crystals [J]. | Materials Letters , 2019 , 239 : 94-97 .
MLA Chen, Wei et al. "Fast decomposition of hydrogen peroxide by Zeolitic imidazolate framework-67 crystals" . | Materials Letters 239 (2019) : 94-97 .
APA Chen, Wei , Chen, Fangming , Zhang, Gao , Kong, Shu , Cai, Wen , Wang, Jian et al. Fast decomposition of hydrogen peroxide by Zeolitic imidazolate framework-67 crystals . | Materials Letters , 2019 , 239 , 94-97 .
Export to NoteExpress RIS BibTex
An assessment of counseling quality provided by community pharmacies to type 2 diabetic adult patients for oral therapy: a simulated patient study from Pakistan. PubMed
期刊论文 | 2019 | Endocrine journal
Abstract&Keyword Cite

Abstract :

This study was conducted to assess quality of counseling provided to type 2 diabetic patients. For this cross-sectional study, a simulated patient method was applied in 562 selected community pharmacies of Punjab, Pakistan. A scenario for the metformin oral therapy was developed that illustrates direct counseling for adult diabetic patients. Counseling and communication skills were also assessed. Descriptive statistics and chi-square tests were used for analysis. Only 29.4% of simulated patients received medication counseling directly; 47.6% received it on request. About 32.8% of clients were referred to a physician without counseling. The most frequently provided information was dietary instruction (94.8%) and dose of therapy (84.5%). Only one quarter (25.3%) of simulated patients were asked about disease duration and similar rate (25.0%) was found for discussions of special warnings. The side effects, drug storage, drug-drug interactions and duration of therapy were ignored. Minimal information was provided about other medication during therapy (0.2%) and effect of medicine withdrawal (2.7%). About 59.5% simulated patients were instructed for compliance to medication. Counseling to type 2 diabetic patients in Pakistani community pharmacies is not very satisfactory. Pharmacies' staff have little focus on counseling. Professional training of staff could improve counseling and communication skills.

Keyword :

Counseling Metformin Type 2 diabetic patients Community pharmacies Pakistan

Cite:

Copy from the list or Export to your reference management。

GB/T 7714 Aziz Muhammad Majid , Yang Shimin , Masood Imran et al. An assessment of counseling quality provided by community pharmacies to type 2 diabetic adult patients for oral therapy: a simulated patient study from Pakistan. [J]. | Endocrine journal , 2019 .
MLA Aziz Muhammad Majid et al. "An assessment of counseling quality provided by community pharmacies to type 2 diabetic adult patients for oral therapy: a simulated patient study from Pakistan." . | Endocrine journal (2019) .
APA Aziz Muhammad Majid , Yang Shimin , Masood Imran , Zhu Shan , Raza Muhammad Ali , Ji Wenjing et al. An assessment of counseling quality provided by community pharmacies to type 2 diabetic adult patients for oral therapy: a simulated patient study from Pakistan. . | Endocrine journal , 2019 .
Export to NoteExpress RIS BibTex
10| 20| 50 per page
< Page ,Total 33 >

Export

Results:

Selected

to

Format:
FAQ| About| Online/Total:2998/54838178
Address:XI'AN JIAOTONG UNIVERSITY LIBRARY(No.28, Xianning West Road, Xi'an, Shaanxi Post Code:710049) Contact Us:029-82667865
Copyright:XI'AN JIAOTONG UNIVERSITY LIBRARY Technical Support:Beijing Aegean Software Co., Ltd.