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Nanostructured hollow spheres of hydroxyapatite: preparation and potential application in drug delivery

Xiaojing ZHANG, Weixin ZHANG, Zeheng YANG, Zhao ZHANG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 246-252 doi: 10.1007/s11705-012-1299-9

Abstract: A solvothermal method has been successfully used to prepare nanostructured hydroxyapatite (HA) hollow(TEM) and field-emission scanning electron microscopy (FESEM) images show that the shells of the HA hollowThe HA hollow spheres exhibited a higher drug loading capacity and more favorable release properties

Keywords： hydroxyapatite     hollow spheres     synthesis     drug release    

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Seismic performance of precast hollow bridge piers with different construction details

Zhiqiang WANG,Jiping GE,Hongyi WEI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 399-413 doi: 10.1007/s11709-014-0273-7

Abstract: Currently the design scheme of precast hollow concrete bridge piers will be adopted in bridge designFor comparative study of seismic performance of the hollow bridge piers which had different design details, six specimens of hollow section bridge pier were designed and tested.

Keywords： hollow pier     seismic performance     cyclic load     precast concrete     bridge columns    

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Impingement of hollow cone spray on hot porous medium

ZHAO Zhiguo, XIE Maozhao

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 273-278 doi: 10.1007/s11708-008-0048-8

Abstract: understanding of the formation of homogenous mixture in a porous medium engine, the interaction between hollowmodel, heat transfer model and linearized instability sheet atomization (LISA) model to simulate the hollowWith a simple model to describe the structure of the porous medium, the interaction between hollow cone

Keywords： improved version     simple     impingement     atomization     hollow    

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Preparation and characterization of EVAL hollow fiber membrane adsorbents filled with cation exchange

Fengli ZHANG, Yuzhong ZHANG, Hong LI, Guangfen LI,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 462-467 doi: 10.1007/s11705-009-0011-1

Abstract: EVAL hollow fiber membrane adsorbents filled with powder D061-type cation exchange resin were preparedThe results showed that EVAL hollow fiber membrane adsorbents filled with D061-type cation exchange resins

Keywords： substrate     copolymer EVAL     exchange     EVAL hollow     resin-filled content    

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Preparation and characterization of alumina hollow fiber membranes

Tao WANG, Yuzhong ZHANG, Guangfen LI, Hong LI

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 265-271 doi: 10.1007/s11705-009-0010-2

Abstract: The inorganic hollow fiber membranes are of great interest due to their high resistance to abrasion,In this study, the alumina (Al O ) hollow fiber membranes were prepared by a combined phase-inversion, which was then sintered at elevated temperatures in order to obtain the Al O hollow fiber membraneThe prepared Al O hollow fiber membranes were characterized by a scanning electron microscope (SEM)The morphology investigation also revealed that the prepared Al O hollow fiber membrane retained its

Keywords： Al2O3     ceramic membranes     hollow fiber    

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Applications of hollow nanomaterials in environmental remediation and monitoring: A review

Yuankai ZHANG,Zhijiang HE,Hongchen WANG,Lu QI,Guohua LIU,Xiaojun ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 770-783 doi: 10.1007/s11783-015-0811-0

Abstract: Hollow nanomaterials have attracted significant attention because of their high chemical and thermalHollow nanomaterials showed higher photocatalytic activity than those without hollow structure owingAnd, the Doping method could improve the photocatalytic performance of hollow nanomaterials further under

Keywords： hollow nanomaterials     environmental remediation     nanotechnology     nanostructures     morphology    

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Hot-dip galvanizing of cold-formed steel hollow sections: a state-of-the-art review

Min SUN, Jeffrey A. PACKER

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 49-65 doi: 10.1007/s11709-017-0448-0

Abstract: A good understanding of the effects of galvanizing on the short- and long-term behaviours of steel components is essential for structural design. This review paper is motivated by a series of recent reports on cracking in galvanized cold-formed tubular steel structures and the limitations of current steel product standards and steel design specifications in this field. The steel-related and galvanizing-related factors, different pre-galvanizing countermeasures for brittle cracking and the available technical documents are summarized. An extensive bibliography is provided as a basis for future research and development in this field.

Keywords： cold-formed steel     hollow structural sections     hot-dip galvanizing     embrittlement     heat-treatment     residual    

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Ag/PMMA hollow waveguide for solar energy transmission

He LAN, Jianjun HAN, Hongping CHEN, Xiujian ZHAO

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 303-307 doi: 10.1007/s11705-010-0565-y

Abstract: This paper describes an elaborate study on obtaining Ag/PMMA (polymethyl methacrylate) leaky hollow waveguideThrough analyses and comparison, a quartz capillary with the inner diameter of 2 mm was chosen as hollowhas the similar spectrum as the sunlight to test and analyze the performance of the Ag/PMMA leakage hollowMeanwhile, the Ag/PMMA leaky-type hollow waveguide in this work had good qualities.

Keywords： hollow waveguide     transmit the solar energy     Ag/PMMA multiple film     parabolic collector    

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Formation of CaCO hollow microspheres in carbonated distiller waste from Solvay soda ash plants

Frontiers of Chemical Science and Engineering   Pages 1659-1671 doi: 10.1007/s11705-022-2173-z

Abstract: Here, CaCO3 hollow microspheres, a high-value product was synthesized from such a reactionIt is found that there is a transformation of CaCO3 particles from solid-cubic nuclei to hollowTherefore, in absence of auxiliaries, the formation of hollow structures mainly depended on the growthand its changes during the growth process point to the inside–out Ostwald effect in the formation of hollow

Keywords： distiller waste     CO2     hollow microsphere     CaCO3     Ca(OH)2     inside−out    

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Effects of baffles on separation of aqueous ethanol solution with hollow fibers

Zhihong YANG, Guoliang ZHANG, Lan LIN, Danping REN, Qin MENG, Hongzi ZHANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 68-72 doi: 10.1007/s11705-009-0130-8

Abstract: The effects of baffles on the operation and mass-transfer characteristics in novel hollow fiber membraneHollow fiber membranes, coated with a 7 μm polydimethyl-siloxane, were operated as structural packing

Keywords： hollow fiber     membrane contactor     baffle     mass-transfer     ethanol-water    

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Hollow carbon spheres and their noble metal-free hybrids in catalysis

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1380-1407 doi: 10.1007/s11705-021-2097-z

Abstract: Hollow carbon spheres have garnered great interest owing to their high surface area, large surface-to-volumeHerein, we overview hollow carbon sphere-based materials and their noble metal-free hybrids in catalysisFirstly, we summarize the key fabrication techniques for various kinds of hollow carbon spheres, withtheir metal-free/containing hybrids are presented; next, possible applications for non-noble metal/hollowdegradation are discussed; finally, we introduce the various challenges and opportunities offered by hollow

Keywords： hollow carbon spheres     functionalization     noble metal-free     catalysis    

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Numerical simulation of a new hollow stationary dehumidity blade in last stage of steam turbine

Youmin HOU, Danmei XIE, Wangfan LI, Xinggang YU, Yang SHI, Hanshi QIN

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 288-296 doi: 10.1007/s11708-011-0160-z

Abstract: As a result of adopting saturation steam and long blade, problems of water erosion of last stage blade for steam turbine become more prominent. In order to improve the operation reliability and efficiency of steam turbine, it is necessary to investigate the nonequilibrium condensing wet steam two phase flow and the dehumidity method. A wet steam model with user defined function based on FLUENT software was investigated to simulate the steam condensing flow in the cascades. The simulation consequences show that the pressure variations in simulation depict a good agreement with the experiment data. On the basis of the discrete phase model simulation results and experiment data, the efficiency of existing dehumidity blade with suction slot was calculated. A new stationary dehumidity blade was designed to elevate the dehumidity efficiency: the efficiency in the suction surface was increased by 21.5%, and that in the pressure surface was increased by 12.2%.

Keywords： steam turbine     hollow stationary blade     dehumidity     numerical simulation    

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g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 217-225 doi: 10.1007/s11705-022-2214-7

Abstract: Aqueous zinc-ion batteries are attracting considerable attention because of their high safety compared with conventional lithium-ion batteries. Manganese-based materials have been widely developed for zinc-ion batteries cathode owning to their low cost, high security and simple preparation. However, the severe volume expansion and poor stability during charging and discharging limit the further development of manganese-based cathodes. Herein, superior α-MnO2@g-C3N4 was successfully prepared for stable zinc-ion batteries (ZIBs) cathode by introducing g-C3N4 nanosheets. Compared with pure α-MnO2, α-MnO2@g-C3N4 has a specific capacity of 298 mAh·g–1 at 0.1 A·g–1. Even at 1 A·g–1, the α-MnO2@g-C3N4 still retains 100 mAh·g–1 (83.4% retention after 5000 cycles), implying its excellent cycling stability. The α-MnO2@g-C3N4-based cathode has the highest energy density (563 Wh·kg–1) and power energy density (2170 W·kg–1). This work provides new avenues for the development of a wider range of cathode materials for ZIBs.

Keywords： α-MnO2 hollow nanorods     g-C3N4     heterojunction     aqueous Zn-ion    

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Flexural behavior of ECC hollow beams incorporating different synthetic fibers

Ahmmad A. ABBAS, Farid H. ARNA ’OT, Sallal R. ABID, Mustafa ÖZAKÇA

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 399-411 doi: 10.1007/s11709-021-0701-4

Abstract: the ECC beams are higher than those of the normal concrete beams and that the ductility values of the hollowMoreover, hollow ECC beams with hole sizes of 60 and 80 mm exhibited a higher ductility than a solid

Keywords： hollow beam     hollowing ratio     ECC     flexural strength     ductility     toughness    

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Preparation and properties of hollow fibre nanofiltration membrane with continuous coffee-ring structure

Xiuzhen Wei, Xufeng Xu, Yi Chen, Qian Zhang, Lu Liu, Ruiyuan Yang, Jinyuan Chen, Bosheng Lv

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 351-362 doi: 10.1007/s11705-020-1943-8

Abstract: Polyamide (PA) hollow fibre composite nanofiltration (NF) membranes with a coffee-ring structure and

Keywords： GO     PA     interfacial polymerization     hollow fibre NF membrane    

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Title Author Date Type Operation

Nanostructured hollow spheres of hydroxyapatite: preparation and potential application in drug delivery

Xiaojing ZHANG, Weixin ZHANG, Zeheng YANG, Zhao ZHANG

Journal Article

Seismic performance of precast hollow bridge piers with different construction details

Zhiqiang WANG,Jiping GE,Hongyi WEI

Journal Article

Impingement of hollow cone spray on hot porous medium

ZHAO Zhiguo, XIE Maozhao

Journal Article

Preparation and characterization of EVAL hollow fiber membrane adsorbents filled with cation exchange

Fengli ZHANG, Yuzhong ZHANG, Hong LI, Guangfen LI,

Journal Article

Preparation and characterization of alumina hollow fiber membranes

Tao WANG, Yuzhong ZHANG, Guangfen LI, Hong LI

Journal Article

Applications of hollow nanomaterials in environmental remediation and monitoring: A review

Yuankai ZHANG,Zhijiang HE,Hongchen WANG,Lu QI,Guohua LIU,Xiaojun ZHANG

Journal Article

Hot-dip galvanizing of cold-formed steel hollow sections: a state-of-the-art review

Min SUN, Jeffrey A. PACKER

Journal Article

Ag/PMMA hollow waveguide for solar energy transmission

He LAN, Jianjun HAN, Hongping CHEN, Xiujian ZHAO

Journal Article

Formation of CaCO hollow microspheres in carbonated distiller waste from Solvay soda ash plants

Journal Article

Effects of baffles on separation of aqueous ethanol solution with hollow fibers

Zhihong YANG, Guoliang ZHANG, Lan LIN, Danping REN, Qin MENG, Hongzi ZHANG

Journal Article

Hollow carbon spheres and their noble metal-free hybrids in catalysis

Journal Article

Numerical simulation of a new hollow stationary dehumidity blade in last stage of steam turbine

Youmin HOU, Danmei XIE, Wangfan LI, Xinggang YU, Yang SHI, Hanshi QIN

Journal Article

g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Journal Article

Flexural behavior of ECC hollow beams incorporating different synthetic fibers

Ahmmad A. ABBAS, Farid H. ARNA ’OT, Sallal R. ABID, Mustafa ÖZAKÇA

Journal Article

Preparation and properties of hollow fibre nanofiltration membrane with continuous coffee-ring structure

Xiuzhen Wei, Xufeng Xu, Yi Chen, Qian Zhang, Lu Liu, Ruiyuan Yang, Jinyuan Chen, Bosheng Lv

Journal Article