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Kinetic roughening transition and missing regime transition of melt crystallized polybutene-1 tetragonalphase: growth kinetics analysis

Motoi YAMASHITA

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 2,   Pages 125-134 doi: 10.1007/s11705-009-0001-3

Abstract: The morphology and lateral growth rate of polybutene-1 ( -PB1) have been investigated for crystallization from the melt over a wide range of crystallization temperatures from 50 to 110°C. The morphology of -PB1 crystals is a rounded shape at crystallization temperatures lower than 85°C, while lamellar single crystals possess faceted morphology at higher crystallization temperatures. The kinetic roughening transition occurs around 85°C. The nucleation and growth mechanism for crystallization does not work below 85°C, since the growth face is rough. However, the growth rate shows the supercooling dependence derived from the nucleation and growth mechanism. The nucleation theory seems still to work even for rough surface growth. Possible mechanisms for the crystal growth of this polymer are discussed.

Keywords： isotactic polybutene-1     tetragonal phase (form Ⅱ)     melt crystallization     growth rate     kinetic    

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Lamellar thickness transition of melt-crystallized polybuten-1 tetragonal phase: configurational change

Motoi YAMASHITA

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 26-32 doi: 10.1007/s11705-009-0002-2

Abstract: Lamellar crystal thickness of isotactic polybutene-1 ( -PB1) have been investigated for crystallization in the melt over a wide range of crystallization temperature from 40°C to 90°C by small angle X-ray scattering experiments and density measurements. The crystal thickness demonstrates two linear dependences on inverse supercooling and a transition from one dependence to the other has been observed around = 65°C. Each of the two dependences obeys the nucleation theory in the high and low supercooling ranges, respectively. Chain folding free energy determined from the low supercooling range is larger than that determined from the high supercooling range. Possible mechanisms for the transition are discussed taking account of entropy of chain folding directions.

Keywords： isotactic polybutene-1     tetragonal phase     crystal thickness     melt growth     chain folding     small angle X-ray    

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Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

Bilyaminu Suleiman, Qinghua Yu, Yulong Ding, Yongliang Li

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 727-735 doi: 10.1007/s11705-019-1823-2

Abstract: A form stable NaCl-Al O (50-50 wt-%) composite material for high temperature thermal energy storage

Keywords： cold sintering process     composite fabrication     thermal energy storage     phase change materials    

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Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 834-850 doi: 10.1007/s11709-021-0743-7

Abstract: An optimization plan was proposed in the combined form of SSGCB.Three-dimensional finite element analysis was adopted to perform the combination form optimization of

Keywords： steel sheet GFRP composite bar     combination form     numerical modeling     mechanical properties test     strength    

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General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0681-7

Abstract: The novel algebraic geometric (NAG) methods that obtain the general closed-form inverse kinematics forindicating that the inverse solutions are consistent with the given joint angles validate the general closed-formAdditionally, the mean and maximum of the master–slave tracking experiment for the closed-form solutionThe experiments results demonstrate that the closed-form solution is superior to the compensation methodThe results verify the proposed general closed-form inverse kinematics based on the NAG methods.

Keywords： inverse kinematics     Paden–Kahan subproblems     three-joint subproblems     product of exponential     closed-form    

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New form of geodetic coordinate system taking two length quantity as coordinate parameters

Yimin SHI, Ziyang ZHU, Yeming FAN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 105-110 doi: 10.1007/s11709-009-0014-5

Abstract: A new form of geodetic coordinate system based on geodesic coordinates instead of geodetic longitudeThe first fundamental form on the ellipsoidal surface and its three coefficients were deduced by theconsequently, it is convenient and accurate enough to operate on the ellipsoidal surface in this new form

Keywords： geodetic coordinate system     meridian and parallel circle     coordinate parameter     the first fundamental form    

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Subcellular distribution and chemical form of Pb in hyperaccumulator

Yanqun ZU,Yuan LI,Huan MIN,Fangdong ZHAN,Li QIN,Jixiu WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 250-258 doi: 10.1007/s11783-014-0643-3

Abstract: Solution culture was conducted in order to understand accumulation characteristics and chemical forms of Pb in ( ) and the response of root exudates to Pb addition. The results showed that: 1) Pb contents in the shoot and root of increased with increasing in Pb concentrations in solution. 2) The contents of Pb chemical forms under Pb addition followed as: HAc extractable fraction (F )>HCl extractable fraction (F )>NaCl extractable fraction (F )>ethanol-extractable fraction (F )>water extractable fraction (F ). 3) Increased Pb level in the medium caused increases in Pb contents in the four subcellular fractions of shoots and roots, with most accumulation in FIV (Fraction IV, soluble fraction) in shoots and FI (Fraction I, cell wall fraction) in roots. 4) Contents of soluble sugar and free amino acid of root exudates increased with increasing Pb concentration in solution. Significantly positive correlations between Pb and contents of soluble sugar and free amino acid were observed. 5) With Pb concentrations in solution, low molecular weight organic acids (LMWOAs) contents followed the tendency: tartaric acid>acetic acid>malic acid>citric acid. Significantly positive correlation was observed between Pb and citric acid contents. The results indicate that soluble sugars, free amino acid and citric acid in root exudates of facilitate the absorption and accumulation of Pb, which exist in NaCl-, HCl- and HAc- extractable Pb forms, FI and FIV fractions, resulting in tolerance of to Pb.

Keywords： Pb     Arenaria orbiculata     chemical forms     subcellular distribution     root exudates     hydroponic culture    

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Generation of closed-form inverse kinematics for reconfigurable robots

ZHAO Jie, WANG Weizhong, GAO Yongsheng, CAI Hegao

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 91-96 doi: 10.1007/s11465-008-0013-6

Abstract: A generalized, decomposable, and reusable approach for close-form inverse kinematics of reconfigurable

Keywords： different     effectiveness     generation     reconfigurable     algebraic    

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Virtual Corporation Is a New Form of Enterprise for Knowledge Economy

Li Xin,Li Ji

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 81-85

Abstract:

This paper tries to use the theory of modern management to analyze virtual corporation, the new form

Keywords： knowledge economy     virtual corporation     new form of enterprise    

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Investigation of the structural form optimization methods of high-rise buildings

ZHANG Shihai, WANG Li, OU Jinping, WANG Guangyuan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 182-187 doi: 10.1007/s11709-007-0020-4

Abstract: In this paper, the structural form optimization methods of high-rise buildings based on the expert systemIt is predicted that the incorporation of these three techniques into an intelligent form optimizationFinally, the unified intelligent form selection model combined with concepts of ES, CBR, KDD and artificiallyThe model plays an important role and has practical value in the process of artificially intelligent form

Keywords： case-based reasoning     computation     KDD     important development     high-rise    

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Neighborhood form and CO

Jiaxing GUO, Huan LIU, Yang JIANG, Dongquan HE, Qidong WANG, Fei MENG, Kebin HE

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 1,   Pages 79-88 doi: 10.1007/s11783-013-0516-1

Abstract: To understand the household CO emission level in China, as well as how much the neighborhoods’ socio-economic or design factors could influence the CO emission, 23 neighborhoods in Jinan were investigated in 2009 and 2010. These neighborhoods fall into four different types: superblock, enclave, grid and traditional. The household CO emission includes sources of both in-home energy use and passenger transportation. The average CO emission per household is 7.66 t·a , including 6.87 t in-home operational emission and 792 kg transportation emission. The household CO emission by neighborhood categories is 10.97, 5.65, 6.49, 5.40 t·household ·a for superblock, enclave, grid and traditional respectively. Superblock has the highest average emission and also the highest percent (more than 25%) of transportation emission among four different types of neighborhoods. The residential CO emission of superblock neighborhoods in Jinan has already reached the level in developed countries nearly ten years ago. It is predictable that more superblock neighborhoods would be built in China with the fast urbanization. How to avoid the rapid household CO emission growth in the future would be a systematic issue. The study also found that in addition to income and apartment area, household density, land use mix and accessibility to public transportation are three primary factors which have significant impacts on CO emission. High density, mixed land use and convenient accessibility to public transportation tend to reduce household CO emission.

Keywords： CO2 emission     neighborhood type     transportation     household energy     China    

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: The polygeneration system of a combination of the gasified coal gas and the pyrolyzed coal gas to form

Kechang XIE, Fan LI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 383-384 doi: 10.1007/s11705-010-0526-5

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Enzyme-instructed self-assembly of peptides containing phosphoserine to form supramolecular hydrogels

Jie Zhou, Xuewen Du, Jiaqing Wang, Natsuko Yamagata, Bing Xu

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 509-515 doi: 10.1007/s11705-017-1613-7

Abstract: Enzyme-instructed self-assembly (EISA) offers a facile approach to explore the supramolecular assemblies of small molecules in cellular milieu for a variety of biomedical applications. One of the commonly used enzymes is phosphatase, but the study of the substrates of phosphatases mainly focuses on the phosphotyrosine containing peptides. In this work, we examine the EISA of phosphoserine containing small peptides for the first time by designing and synthesizing a series of precursors containing only phosphoserine or both phosphoserine and phosphotyrosine. Conjugating a phosphoserine to the -terminal of a well-established self-assembling peptide backbone, (naphthalene-2-ly)-acetyl-diphenylalanine (NapFF), affords a novel hydrogelation precursor for EISA. The incorporation of phosphotyrosine, another substrate of phosphatase, into the resulting precursor, provides one more enzymatic trigger on a single molecule, and meanwhile increases the precursors’ propensity to aggregate after being fully dephosphorylated. Exchanging the positions of phosphorylated serine and tyrosine in the peptide backbone provides insights on how the specific molecular structures influence self-assembling behaviors of small peptides and the subsequent cellular responses. Moreover, the utilization of D-amino acids largely enhances the biostability of the peptides, thus providing a unique soft material for potential biomedical applications.

Keywords： enzyme-instructed self-assembly     phosphoserine     phosphatase     supramolecular hydrogel    

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Supporting structure form and parameters design of Bohai Strait tunnel

Wan Fei,Wang Yunlong,Wu Yongsheng

Strategic Study of CAE 2013, Volume 15, Issue 12,   Pages 61-66

Abstract: having been completed,the engineering analogy method can be adopted to design supporting structure form

Keywords： Bohai Strait     subsea tunnel     structure form     design parameters    

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dehydration behavior and non-isothermal dehydration kinetics of donepezil hydrochloride monohydrate (Form

Tiantian LIU, Yuanyuan RAN, Bochao WANG, Weibing DONG, Songgu WU, Junbo GONG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 55-63 doi: 10.1007/s11705-013-1352-3

Abstract: Powders of donepezil hydrochloride monohydrate (Form I) underwent isomorphic dehydration, losing 3% wBelow 10% RH, additional dehydration occurred in conjunction with a reversible phase transition betweenForm I showed the characteristics of the channel hydrate, whose non-isothermal dehydration behavior proceedsDehydrated Form I is structurally similar to the monohydrate Form I.crystal density criteria, the two crystal forms belonged to the univariant system, and the anhydrate (Form

Keywords： dehydration     thermal analysis     transformation     dehydration kinetics    

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Title Author Date Type Operation

Kinetic roughening transition and missing regime transition of melt crystallized polybutene-1 tetragonalphase: growth kinetics analysis

Motoi YAMASHITA

Journal Article

Lamellar thickness transition of melt-crystallized polybuten-1 tetragonal phase: configurational change

Motoi YAMASHITA

Journal Article

Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

Bilyaminu Suleiman, Qinghua Yu, Yulong Ding, Yongliang Li

Journal Article

Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber

Journal Article

General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Journal Article

New form of geodetic coordinate system taking two length quantity as coordinate parameters

Yimin SHI, Ziyang ZHU, Yeming FAN

Journal Article

Subcellular distribution and chemical form of Pb in hyperaccumulator

Yanqun ZU,Yuan LI,Huan MIN,Fangdong ZHAN,Li QIN,Jixiu WANG

Journal Article

Generation of closed-form inverse kinematics for reconfigurable robots

ZHAO Jie, WANG Weizhong, GAO Yongsheng, CAI Hegao

Journal Article

Virtual Corporation Is a New Form of Enterprise for Knowledge Economy

Li Xin,Li Ji

Journal Article

Investigation of the structural form optimization methods of high-rise buildings

ZHANG Shihai, WANG Li, OU Jinping, WANG Guangyuan

Journal Article

Neighborhood form and CO

Jiaxing GUO, Huan LIU, Yang JIANG, Dongquan HE, Qidong WANG, Fei MENG, Kebin HE

Journal Article

: The polygeneration system of a combination of the gasified coal gas and the pyrolyzed coal gas to form

Kechang XIE, Fan LI

Journal Article

Enzyme-instructed self-assembly of peptides containing phosphoserine to form supramolecular hydrogels

Jie Zhou, Xuewen Du, Jiaqing Wang, Natsuko Yamagata, Bing Xu

Journal Article

Supporting structure form and parameters design of Bohai Strait tunnel

Wan Fei,Wang Yunlong,Wu Yongsheng

Journal Article

dehydration behavior and non-isothermal dehydration kinetics of donepezil hydrochloride monohydrate (Form

Tiantian LIU, Yuanyuan RAN, Bochao WANG, Weibing DONG, Songgu WU, Junbo GONG

Journal Article