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Ethylene Copolymerization with Linear and End-Cyclized Olefins via a Metallocene Catalyst: Polymerization Behavior and Thermal Properties of Copolymers Letter

Changjiang Wu, Minqiao Ren, Liping Hou, Shuzhang Qu, Xinwei Li, Cui Zheng, Jian Chen, Wei Wang

Engineering 2023, Volume 30, Issue 11,   Pages 93-99 doi: 10.1016/j.eng.2023.07.001

Abstract: this reaction, the comonomer is distributed randomly in the polymer chain and efficiently destroys crystallizationEnd-cyclized α-olefins exhibit a much stronger crystallization destructive capacity (CDC) in the

Keywords： Metallocene catalyst     Ethylene copolymerization     Comonomer distribution     Crystallization destructivecapacity    

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Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1400-1414 doi: 10.1007/s11709-021-0779-8

Abstract: sand-to-aggregate volume ratio (s/a) on the mechanical properties of concrete utilizing both destructiveand non-destructive testing (employing UPV (ultrasonic pulse velocity) measurements).

Keywords： aggregates     non-destructive testing     sand-to-aggregate volume ratio (s/a)     maximum aggregate    

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Sonic General Non-destructive Testing Technique

Chen Jimao

Strategic Study of CAE 2000, Volume 2, Issue 4,   Pages 64-69

Abstract:

This paper describes new general multi-mode non-destructive testing (NDT) of composite materials and

Keywords： sonic general testing     general non-destructive testing (NDT)     non-destructive testing of composite materials    

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Synthesis and characterization of macromolecular surface modifier PP--PEG for polypropylene

CHEN Hanjia, SHI Xuhua, ZHU Yafei, ZHANG Yi, XU Jiarui

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 102-108 doi: 10.1007/s11705-008-0018-z

Abstract: The graft copolymer was found to have a higher initial thermal degradation temperature and lower crystallizationcapacity as compared with pure PP, and the side chain of PEG hindered the PP chain from forming a perfect

Keywords： polypropylene     crystallization capacity     attenuated     hydrophilicity     reflectance    

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Separation of gibberellic acid (GA3) by macroporous adsorption resins

WANG Ruifang, YANG Jialing, SHI Zuoqing, OU Lailiang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 171-175 doi: 10.1007/s11705-008-0025-0

Abstract: The dynamic adsorption capacity is 58.38 mg/g dry beads for resin R4 and 96.46 mg/g dry beads for resinincrease five-fold after an adsorption-elution cycle and this is important when considering further crystallization

Keywords： industrial     gibberellic     adsorption capacity     crystallization     consistent    

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Destructive Earthquakes Are Predictable——The Physical Model of Earthquake Gestation and the Signal of

Sun Wei

Strategic Study of CAE 2007, Volume 9, Issue 7,   Pages 7-17

Abstract: numerous earthquakes that occurred worldwide have proved that the quake-breeding physical model of destructiveearthquake prediction is preactically divided into stages, making it possible to realize the predicting of destructive

Keywords： destructive earthquake     quake-breeding physical model     signals before an earthquake     earthquake precursor    

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Progress in membrane distillation crystallization: Process models, crystallization control and innovative

Xiaobin Jiang, Linghan Tuo, Dapeng Lu, Baohong Hou, Wei Chen, Gaohong He

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 647-662 doi: 10.1007/s11705-017-1649-8

Abstract: Membrane distillation crystallization (MDC) is a promising hybrid separation process that has been appliedprogress has been made in MDC technologies including the promotion of nucleation and better control of crystallizationThis review focuses on the development of MDC process models and on crystallization control strategies

Keywords： membrane distillation crystallization     mathematics model     nucleation     separation     hybrid process    

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Effects of a structurally related substance on the crystallization of paracetamol

Ali SALEEMI, I.I. ONYEMELUKWE, Zoltan NAGY

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 79-87 doi: 10.1007/s11705-013-1308-7

Abstract: Paracetamol (PCM) was crystallized from an isopropanol (IPA) solution containing various small amounts of metacetamol as an additive. The effect on the nucleation kinetics was studied by measuring the induction time to nucleation and the metastable zone width using focused beam reflectance measurements (FBRM) and attenuated total reflectance (ATR-UV/Vis) spectroscopy. Both the induction time and the metastable zone width were expressed as functions of the additive concentration. Small amounts of metacetamol (1–4 mol-%) were found to cause significant inhibition to the nucleation by extending both the induction time and the metastable zone width. A progressive change in the morphology of the paracetamol crystals from tabular to columnar habit was observed with increasing metacetamol concentration. The solvent also had a significant effect on the size of the paracetamol crystals as smaller crystals were obtained in IPA than in aqueous solution. The dissolution rate of paracetamol was improved by the incorporation of metacetamol with 4 mol-% having the most effect. A supersaturation control (SSC) approach was implemented for the PCM-IPA system with and without metacetamol in an attempt to control and obtain larger metacetamol-doped paracetamol crystals.

Keywords： acetaminophen     metacetamol     crystallization     metastable zone width     induction time     supersaturation control    

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Interfacial induction and regulation for microscale crystallization process: a critical review

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 838-853 doi: 10.1007/s11705-021-2129-8

Abstract: Microscale crystallization is at the frontier of chemical engineering, material science, and biochemicalstructure and cavities, pore shape and pore size, surface porosity, channels), in various microscale crystallizationfuture research and development directions are outlined to emphasize the importance of interfacial crystallization

Keywords： interfacial crystallization     heterogeneous nucleation     supersaturation     micro/nanostructure     process    

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The feasibility of coating by cooling crystallization on ibuprofen naked tablets

Fatima Mameri, Ouahiba Koutchoukali, Mohamed Bouhelassa, Anne Hartwig, Leila Nemdili, Joachim Ulrich

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 211-219 doi: 10.1007/s11705-017-1619-1

Abstract: Recently, a new process of coating by cooling crystallization has been developed and applied on bisacodylpastilles obtained by melt crystallization.In this work, we investigated the feasibility of coating by cooling crystallization on ibuprofen “nakedbeen determined experimentally for the coating solution because they are essential factors for any crystallizationThe results show that naked tablet coating by cooling crystallization is feasible and can be applied

Keywords： coating     solution crystallization     ibuprofen tablets     sucrose    

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Utilizing melt crystallization fundamentals in the development of a new tabletting technology

Ahmed ABOUZEID,Sandra PETERSEN,Joachim ULRICH

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 346-352 doi: 10.1007/s11705-014-1443-9

Abstract: Increasing production effeciency and lowering costs are some of the many advantages melt crystallizationMelt crystallization is a purification (separation) process.

Keywords： phase separation     melt crystallization     tablets     process optimization    

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Nucleic acid crystallization and X-ray crystallography facilitated by single selenium atom

Wen Zhang,Jack W. Szostak,Zhen Huang

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2,   Pages 196-202 doi: 10.1007/s11705-016-1565-3

Abstract: However, the crystallization and phase determination are the major bottle-neck problems in crystallographystrategies to solve the phase determination problem, but also offer a potential strategy to explore crystallization

Keywords： selenium     DNA     RNA     nucleic acid     crystallization    

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Preparation and crystallization kinetics of micron-sized Mg(OH)

Xingfu SONG, Kefeng TONG, Shuying SUN, Ze SUN, Jianguo YU

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 130-138 doi: 10.1007/s11705-013-1332-7

Abstract: Furthermore, the crystallization kinetics based on the population balance theory was studied to provide

Keywords： magnesium hydroxide     precipitation     micron-sized     crystallization kinetics    

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Applications of the crystallization process in the pharmaceutical industry

Sohrab ROHANI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 2-9 doi: 10.1007/s11705-009-0297-z

Abstract: The applications of the crystallization technique in the pharmaceutical industry as a purification andexternal control in the form of feedback and real-time optimal control using cooling and antisolvent crystallizationTwo methods to prepare micron-sized drug particles, namely, micro-crystallization and polymer-coatedResolution of chloromandelic acid derivatives, a racemic compound, is achieved using direct crystallizationand diastereomeric salts crystallization.

Keywords： feedback     morphology     pulmonary     paracetamol     recognition    

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Importance of emulsions in crystallization—applications for fat crystallization

Sandra PETERSEN, K. CHALEEPA, Joachim ULRICH

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 43-48 doi: 10.1007/s11705-013-1309-6

Abstract: Emulsions and crystallization are two independent research topics which normally do not overlap althoughHere, the importance of emulsions in the field of fat crystallization is described.fractionation and phase change materials, emulsification can be applied as a tool to improve the fat crystallizationemulsification creates new application fields such as solid lipid nanoparticles in the area of fat crystallization

Keywords： emulsion     fat crystallization     phase change material     emulsion fractionation     emulsion solidification    

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Title Author Date Type Operation

Ethylene Copolymerization with Linear and End-Cyclized Olefins via a Metallocene Catalyst: Polymerization Behavior and Thermal Properties of Copolymers

Changjiang Wu, Minqiao Ren, Liping Hou, Shuzhang Qu, Xinwei Li, Cui Zheng, Jian Chen, Wei Wang

Journal Article

Destructive and non-destructive evaluation of concrete for optimum sand to aggregate volume ratio

Journal Article

Sonic General Non-destructive Testing Technique

Chen Jimao

Journal Article

Synthesis and characterization of macromolecular surface modifier PP--PEG for polypropylene

CHEN Hanjia, SHI Xuhua, ZHU Yafei, ZHANG Yi, XU Jiarui

Journal Article

Separation of gibberellic acid (GA3) by macroporous adsorption resins

WANG Ruifang, YANG Jialing, SHI Zuoqing, OU Lailiang

Journal Article

Destructive Earthquakes Are Predictable——The Physical Model of Earthquake Gestation and the Signal of

Sun Wei

Journal Article

Progress in membrane distillation crystallization: Process models, crystallization control and innovative

Xiaobin Jiang, Linghan Tuo, Dapeng Lu, Baohong Hou, Wei Chen, Gaohong He

Journal Article

Effects of a structurally related substance on the crystallization of paracetamol

Ali SALEEMI, I.I. ONYEMELUKWE, Zoltan NAGY

Journal Article

Interfacial induction and regulation for microscale crystallization process: a critical review

Journal Article

The feasibility of coating by cooling crystallization on ibuprofen naked tablets

Fatima Mameri, Ouahiba Koutchoukali, Mohamed Bouhelassa, Anne Hartwig, Leila Nemdili, Joachim Ulrich

Journal Article

Utilizing melt crystallization fundamentals in the development of a new tabletting technology

Ahmed ABOUZEID,Sandra PETERSEN,Joachim ULRICH

Journal Article

Nucleic acid crystallization and X-ray crystallography facilitated by single selenium atom

Wen Zhang,Jack W. Szostak,Zhen Huang

Journal Article

Preparation and crystallization kinetics of micron-sized Mg(OH)

Xingfu SONG, Kefeng TONG, Shuying SUN, Ze SUN, Jianguo YU

Journal Article

Applications of the crystallization process in the pharmaceutical industry

Sohrab ROHANI

Journal Article

Importance of emulsions in crystallization—applications for fat crystallization

Sandra PETERSEN, K. CHALEEPA, Joachim ULRICH

Journal Article