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Phase separation time/temperature dependence of thermoplastics-modified thermosetting systems

ZHANG Xiujuan, XU Yuanze, YI Xiaosu

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 276-285 doi: 10.1007/s11705-008-0057-5

Abstract: The cure-induced phase separation processes of various thermoplastics(TP)-modified thermosetting systemsemphasis on the temperature dependency of the phase separation time and its potential application in the cureThe cure-induced phase separation activation energy (ps) generated from the linear fitting of the Arrheniusthat (ps) is insensitive to TP content, TP molecular weight and curing rate, but it changes with the cureestablished phase separation time-temperature dependence relation, we can easily establish the whole cure

Keywords: separation time-temperature     temperature dependency     cure-induced     separation activation     temperature    

Improved “cure on demand” of aromatic bismaleimide with thiol triggered by retro-Diels-Alder reaction

Vincent Froidevaux, Mélanie Decostanzi, Abdelatif Manseri, Sylvain Caillol, Bernard Boutevin, Rémi Auvergne

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 330-339 doi: 10.1007/s11705-020-1929-6

Abstract: This study focuses on the synthesis of new liquid aromatic bismaleimide monomers in order to improve self-curing on demand (SCOD) systems previously based on aliphatic bismaleimides. These SCOD systems are based on Diels-Alder (DA)/retro-DA reactions. The syntheses of new different aromatic bismaleimides with ester and amide bonds are presented. These maleimides have been protected using DA reaction and characterized by H NMR analysis to determine protection rate and diastereomer ratios. The retro-DA reactions of both aromatic and aliphatic DA adducts in presence of thiol molecules were studied. Kinetic analysis was monitored by H NMR and compared to model study. Finally, both aromatic and aliphatic bismaleimides-based polymers were synthesized with 2-mercaptoethyl ether and thermal properties of polymers were compared. The glass transition temperature values ranged from –20 °C to 14 °C and very good thermal stabilities were observed (up to 300 °C).

Keywords: thiol-ene polymerization     self-curing on demand     thia-michael addition     Diels-Alder     maleimide    

Thinking about Future Plant Medicine Engineering

Gao Jinji

Strategic Study of CAE 2003, Volume 5, Issue 12,   Pages 30-35

Abstract:

According to the dissipative structure theory, human has much in common with man-made machine, and there is much in resemblance between disease healing of human and fault overcoming of machine. Under the light of the systemics, by introducing the methodology of medical science into the field of machine fault diagnosis, prediction and prevention, it is possible to build a new theory of PME (Plant Medicine Engineering) to prevent and eliminate faults of machine by engineering means. Some common issues, such as the forming of diseases and faults, how to diagnose those diseases and faults, the deep rule concerning the causes and mechanisms of faults and diseases, comparison between curing and self-healing, and between the dealing of symptoms and that of initial causes, etc. , were discussed in this paper. A novel “crystal box approach” of PME, which is based on the piths of both “black-box approach” of traditional Chinese medical theory and uwhite-box approach^ of modern west medical science, was put forth. Lastly, from the view point df PME, some pitfalls in current studies about fault diagnosis are discussed.

Keywords: plant medicine engineering     diseases     faults     prevention and cure    

Current advances in the elimination of hepatitis B in China by 2030

Shuye Zhang, Fusheng Wang, Zheng Zhang

Frontiers of Medicine 2017, Volume 11, Issue 4,   Pages 490-501 doi: 10.1007/s11684-017-0598-4

Abstract: Available anti-HBV therapy is efficacious in suppressing HBV replication; however, it fails to completely cure

Keywords: HBV     CHB     biomarker     functional cure     coinfection    

Treatment of gingival hyperplasia induced by cyclosporine A

MA Jingzhi, LI Ming, CAO Yingguang

Frontiers of Medicine 2008, Volume 2, Issue 3,   Pages 290-294 doi: 10.1007/s11684-008-0055-5

Abstract: The clinical therapy for cyclosporine A (CsA)-induced gingival hyperplasia (GH) and the pathologicalNine cases of CsA-induced GH after renal transplantation were subjected to periodontal non-surgical treatment

Keywords: post-transplantation     Gingival     cytoplasmic     CsA-induced     further    

Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 363-384 doi: 10.1007/s11709-016-0353-y

Abstract: It was concluded that the two-way approach predicts earlier vortex induced vibration for lower critical

Keywords: vortex-induced vibration     fluid-structure interaction     Strouhal number     lock-in     kinetic energy    

Formation of microporous polymeric membranes via thermally induced phase separation: A review

Min Liu,Shenghui Liu,Zhenliang Xu,Yongming Wei,Hu Yang

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 57-75 doi: 10.1007/s11705-016-1561-7

Abstract: A review of recent research related to microporous polymeric membranes formed via thermally induced phase

Keywords: polymer     microporous membrane     thermally induced phase separation    

An overview of vortex-induced vibration (VIV) of bridge decks

Teng WU, Ahsan KAREEM

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 335-347 doi: 10.1007/s11709-012-0179-1

Abstract: A brief overview of vortex-induced vibration (VIV) of circular cylinders is first given as most of VIV

Keywords: vortex-induced vibration (VIV)     Volterra series     bridge    

Synthesis and ultraviolet/aggregation-induced emission investigation of novel tetraphenylvinyl hydrazone

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2061-2073 doi: 10.1007/s11705-023-2366-0

Abstract: sensors for better colorimetric responses, whereas the tetraphenyl unit is in charge of the aggregation-inducedAll the tetrahydrofuran/H2O solutions of the three compounds exhibit aggregation-induced emissionMoreover, good aggregation-induced emission effects are observed in the self-assembly of SC16

Keywords: organogelator     tetraphenylvinyldrazone     single crystal     aggregation-induced emission effect     ion sensing    

Cellular changes in bronchoalveolar lavage fluid in hyperoxia-induced lung injury

HE Xinbiao, ZHAO Wei

Frontiers of Medicine 2008, Volume 2, Issue 4,   Pages 370-373 doi: 10.1007/s11684-008-0071-5

Abstract: The data suggests that (1) an increase in neutrophil count is an evident feature of hyperoxia-inducedconcentration oxygen exposure can give rise to anorexia and malnutrition, which may play a role in hyperoxia-induced

Effect of succinic acid deamidation-induced modification on wheat gluten

Lan LIAO, Mouming ZHAO, Haifeng ZHAO, Jiaoyan REN, Chun CUI, Xiao HU,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 386-392 doi: 10.1007/s11705-009-0250-1

Abstract: The effect of succinic acid deamidation-induced modification on wheat gluten was investigated in theMoreover, succinic acid deamidation-induced modification resulted in little change in molecular weight

Keywords: pH     isoelectric     conformation     deamidation-induced modification     molecular flexibility    

Vortex-induced vibration of stay cable under profile velocity using CFD numerical simulation method

Wenli CHEN, Hui LI,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 357-363 doi: 10.1007/s11709-009-0060-z

Abstract: Vortex-induced vibration (VIV) of a stay cable subjected to a wind profile is numerically simulated through

Keywords: stay cable     fluid-structure interaction     numerical simulation     vortex-induced vibration    

Numerical modeling of current-induced scour around multi-wall foundation using large-eddy simulation

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 546-565 doi: 10.1007/s11709-023-0943-4

Abstract: Scouring is one of the primary triggers of failure for bridges across rivers or seas. However, research concerning the scour mechanism of multi-wall foundations (MWFs) remains scarce, hindering the further application of MWFs. In this study, for the first time, the scouring effect caused by unidirectional flow around MWFs was examined numerically using FLOW-3D involving a large-eddy simulation. Initially, the applicability of the scouring model and input parameters was validated using a case study based on published measured data. Subsequently, the scouring effects of four MWFs with different wall arrangements and inflow angles, including the flow field analysis and scour pit and depth, were investigated thoroughly. It was found that the maximum scour depth of MWFs with an inflow angle of 0° was smaller than that of those with an inflow angle of 45°, regardless of the wall arrangement. Meanwhile, changing the inflow angle significantly affects the scour characteristics of MWFs arranged in parallel. In practical engineering, MWFs arranged in parallel are preferred considering the need for scouring resistance. However, a comparative analysis should be performed to consider comprehensively whether to adopt the form of a round wall arrangement when the inflow angle is not 0° or the inflow direction is changeable.

Keywords: multi-wall foundation     current-induced scour     bridge foundation     large-eddy simulation     numerical analysis    

Prediction of characteristic blast-induced vibration frequency during underground excavation by using

Tae Un PAK; Guk Rae JO; Un Chol HAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 1029-1039 doi: 10.1007/s11709-022-0861-x

Abstract: Blast-induced vibration produces a very complex signal, and it is very important to work out environmentalproblems induced by blasting.

Keywords: wavelet analysis     blast-induced vibration     frequency characteristics     underground excavation    

Influence of construction-induced damage on the degradation of freeze–thawed lightweight cellular concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 781-792 doi: 10.1007/s11709-021-0733-9

Abstract: The construction-induced damage can be more significant than those from the service environment of LCCHowever, the effect of construction-induced damage on LCC during F–T cycles is often ignored and the

Keywords: lightweight cellular concrete     construction-induced damage     freeze-thaw action     microstructure     degradation    

Title Author Date Type Operation

Phase separation time/temperature dependence of thermoplastics-modified thermosetting systems

ZHANG Xiujuan, XU Yuanze, YI Xiaosu

Journal Article

Improved “cure on demand” of aromatic bismaleimide with thiol triggered by retro-Diels-Alder reaction

Vincent Froidevaux, Mélanie Decostanzi, Abdelatif Manseri, Sylvain Caillol, Bernard Boutevin, Rémi Auvergne

Journal Article

Thinking about Future Plant Medicine Engineering

Gao Jinji

Journal Article

Current advances in the elimination of hepatitis B in China by 2030

Shuye Zhang, Fusheng Wang, Zheng Zhang

Journal Article

Treatment of gingival hyperplasia induced by cyclosporine A

MA Jingzhi, LI Ming, CAO Yingguang

Journal Article

Influence of fluid-structure interaction on vortex induced vibration and lock-in phenomena in long span

Nazim Abdul NARIMAN

Journal Article

Formation of microporous polymeric membranes via thermally induced phase separation: A review

Min Liu,Shenghui Liu,Zhenliang Xu,Yongming Wei,Hu Yang

Journal Article

An overview of vortex-induced vibration (VIV) of bridge decks

Teng WU, Ahsan KAREEM

Journal Article

Synthesis and ultraviolet/aggregation-induced emission investigation of novel tetraphenylvinyl hydrazone

Journal Article

Cellular changes in bronchoalveolar lavage fluid in hyperoxia-induced lung injury

HE Xinbiao, ZHAO Wei

Journal Article

Effect of succinic acid deamidation-induced modification on wheat gluten

Lan LIAO, Mouming ZHAO, Haifeng ZHAO, Jiaoyan REN, Chun CUI, Xiao HU,

Journal Article

Vortex-induced vibration of stay cable under profile velocity using CFD numerical simulation method

Wenli CHEN, Hui LI,

Journal Article

Numerical modeling of current-induced scour around multi-wall foundation using large-eddy simulation

Journal Article

Prediction of characteristic blast-induced vibration frequency during underground excavation by using

Tae Un PAK; Guk Rae JO; Un Chol HAN

Journal Article

Influence of construction-induced damage on the degradation of freeze–thawed lightweight cellular concrete

Journal Article