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Simulation Study on Hydrogen-Heating-Power Poly-Generation System based on Solar Driven Superc.itical Water Biomass Gasification with compressed Gas Products as an Energy Storage System

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Journal of Thermal Science 2020年第2期29卷 365-377页

作者： JiN hui WANG c.i FAN chao State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong UniversityXi'an 710049China

Superc.itical water gasification driven by solar energy is a promising way for clean utilization of biomass with high moisture content, but direct discharge of liquid residual causes energy waste and decreases energy efficiency. To reduce energy waste, a poly-generation system for hydrogen-rich gas produc.ion coupling heat supply and power generation based on superc.itical water gasification of biomass driven by concentrated solar energy was established in this paper, which also provided a novel energy storage method to overcome the shortcomings of solar discontinuity. Thermodynamic model of the system was proposed and life cycle assessment(LcA) of the system was conducted. influence of different parameters(temperature of 600℃ to 800℃, outlet temperature of heat exchanger of 42℃ to 56℃, biomass slurry concentration of 5% to 6.5%) on the gasification performance, energy and exergy efficiency, energy distribution and global warming potential(GWP) was discussed. The results indicated that hydrogen yield increased as gasification temperature increased since free radical reac.ion was enhanced which gas produc.ion reac.ion was classified into. Molar frac.ion of hydrogen increased as gasification temperature increased and reached 65.6% at 750℃. Energy and exergy efficiency of the system reached 74.84% and 34.87% at 700℃ and 600℃ respec.ively and that of gas produc.ion was 18.15% at 650℃, which was the highest. increasing reac.ion temperature and decreasing biomass slurry concentration were effec.ive ways to decrease GWP. Optimal operating parameter was reac.ion temperature of 650℃, outlet temperature of heat exchanger of 50℃ and biomass concentration of 5%.

关键词： biomass superc.itical water gasification poly-generation system thermodynamics analysis energy storage life cycle assessment

Func.ional foods based on the recovery of bioac.ive ingredients from food and algae by-products by emerging extrac.ion technologies and 3D printing

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Food Bioscience 2022年第5期49卷 1090-1102页

作者： Pauline Donn Miguel A.Prieto Juan c.Mejuto hui cao Jesus Simal-Gandara University of Yaounde 1 P.O.BOX 337YaoundeCameroon Universidade de Vigo Nutrition and Bromatology GroupDepartment of Analytical Chemistry and Food ScienceFaculty of ScienceE32004OurenseSpain Universidade de Vigo Department of Physical ChemistryFaculty of ScienceE32004OurenseSpain

3D food printing is an emerging technology developed to facilitate the life of consumers and food *** technology allows to obtain any type of new foods according to our *** is possible to develop a food with the exact nutritive value necessary for our body,with the most benefiting nutrients we want,or without any ingredients that we have an allergy,and even predict or personalize the taste,the color,the shape,and the size of a ***,3D food printing is considered a promising strategy for developing healthy *** the other hand,many foods enterprises release high amounts of waste from their processing *** wastes contain many bioac.ive ingredients such as polyphenols,carotenoids,vitamins,minerals,fibers,unsaturated fatty acids,among others,which have physiological and health ***,several bioac.ive compounds have been identified in *** can be extracted by conventional methods with solvents such as water,ethanol,methanol,chloroform,acetone,and many others,but with some limits like environmental contamination,human toxicity,and low extrac.ion *** these reasons,it will be interesting to use emerging extrac.ion technologies to recover bioac.ive compounds and use them in a 3D food printer to make func.ional foods that can bring a targeted health benefit to consumers.

关键词： bioac.ive methanol exact

Morphology Evolution of Poly(vinylidene fluoride) Membranes during Superc.itical cO_2 Assisted Phase inversion

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c.inese Journal of Polymer Science 2014年第12期32卷 1628-1638页

作者： Yan-hui Xiang 刘富薛立新 Jian-hui Shen Hai-bo Lin Ningbo institute of Materials technology & Engineering Chinese Academy of Sciences

A superc.itical carbon dioxide（Sc cO2） assisted phase inversion was developed to produce microporous poly（vinylidene fluoride）（PVDF） membranes whose morphology characteristics arise from both liquid-liquid demixing and solid-liquid demixing（crystallization）. This result was confirmed by Fourier transform infrared spectroscopy（FTiR）, from which both α and β crystals were found. As revealed by contact angle experiment, the PVDF membranes prepared via Sc cO2 assisted phase inversion were more hydrophobic compared with the control membrane produced via conventional immersionprecipitation technique. in particular, the sample with 15 wt% PVDF prepared at 45 °c and 13 MPa exhibited a contact angle of 142°, which was mainly caused by the multilevel micro- and nano- structure. The effects of polyethylene glycol（PEG）, polyvinyl pyrrolidone（PVP） and lithium chloride（Li cl） on the structures and crystal form were investigated. PVP promoted the formation of β phase crystal form, while PEG boosts the evolution of α phase. Li cl restrained the crystallization degree of PVDF membrane under Sc cO2.

关键词： Poly(vinylidene fluoride) Superc.itical carbon dioxide Morphology Hydrophobic Micro-structure.

Transparent PVDF-based electrolyte enabled by lipophilic lithium magnesium silicate for solid-state lithium batteries

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Rare Metals 2024年第11期43卷 5625-5636页

作者： Yue Zhang Jun-Hong Li Man Ge Yun-hui Huang Heng-hui Xu School of Materials Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

Solid-state batteries with solid polymer electrolytes are considered the most promising due to their high energy density and safety ***,their development is hindered by the limitations of polymer electrolytes,such as low ionic conduc.ivity,poor mechanical strength and inadequate fire *** study presents a thin polyvinylidene fluoride-based composite solid electrolyte film(25μm incorporating twodimensional modified lipophilic lithium magnesium silicate(LLS)as additives with good *** incorporation of LLS promotes grain refinement in polyvinylidene fluoride(PVDF),enhances the densification of electrolyte films,increases the tensile strength to10.42 MPa and the elongation to 251.58%,improves ion transport interfac e,and facilitates uniform deposition of lithium ***,LLS demonstrates strong adsorption ability,promoting the formation of solvated molecules,resulting in high ionic conduc.ivity(2.07×10^(-4)S·cm^(-1)at 30℃)and a stable lithium/electrolyte *** Li//Li cells assembled with the thin composite electrolytes exhibit stable cyc.ing for2000 h at 0.1 mA·cm^(-2)and 0.05 mAh·cm^(-2).Additionally,the LiFePO_(4)//Li battery shows a capacity retention rate of99.9%after 200 cycles at 0.5c and room temperature.

关键词： Filler Lithium magnesium silicate Polymer electrolytes Batteries

SYNTHESiS OF STYRYL-cAPPED POLYPROPYLENE via METALLOcENE-MEDiATED cOORDiNATiON POLYMERiZATiON: APPLY TO POLYPROPYLENE MAcROMOLEcULAR ENGiNEERiNG

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c.inese Journal of Polymer Science 2013年第4期31卷 550-562页

作者： Hua-hua Huang chuan-hui Zhang Ya-wei Qin hui Niu 董金勇 cAS Key Laboratory of Engineering Plastics Institute of ChemistryChinese Academy of Sciences University of c.inese Academy of Sciences

in this paper, we review our recent progress in the synthesis and application of styryl-capped polypropylene （PP-t- St）, an excellent reac.ive polyolefin that is both convenient and efficient in synthesis and facile and versatile in application for preparing advanced polypropylene materials via macromolecular engineering. The synthesis of PP-t-St is made possible by a unique chain transfer reac.ion coordinated by a bis-styrenic molecule, such as 1,4-divinylbenzene （DVB） and 1,2-bis（4- vinylphenyl）ethane （BVPE）, and hydrogen in typical c2-symmetric metallocene （e.g. rac-Me2Si（2-Me-4-Ph-ind）2Zrc12, in association with methylaluminocene, MAO） catalyzed propylene polymerization. The regio-selec.ive 2,1- insertion of the styrenic double bond in DVB or BVPE into the overwhelmingly 1,2-fashioned Zr-PP propagating chain enables substantial dormancy of the catalyst ac.ive site, which triggers selec.ive hydrogen chain transfer that, with the formed Zr-H species ultimately saturated by the insertion of propylene monomer, results in an exclusive capping of the afforded PP chains by styryl group at the termination end. With a highly reac.ive styryl group at chain end, PP-t-St has been used as a facile building block in PP macromolecular engineering together with the employment of state-of-the-art synthetic polymer chemistry to fabricate broad types of new polypropylene arc.itectures.

关键词： Polypropylene coordination polymerization Styryl terminal group Macromolecular engineering.

NK cells in liver homeostasis and viral hepatitis

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Science c.ina(Life Sciences) 2018年第12期61卷 1477-1485页

作者： hui Peng Zhigang Tian Division of Molecular Medicine Hefei National Laboratory for Physical Sciences at Microscale the CAS Key Laboratory of Innate Immunity and Chronic Disease School of Life Sciences University of Science and Technology of China institute of immunology University of Science and Technology of China

As an important member of the innate immune system, natural killer(NK) cells are well known for their rapid and efficient immune responses against infec.ious agents and tumors. NK cells are widely distributed throughout the body and are particularly enriched within the liver, where they display unique phenotypic and func.ional properties, playing important roles in various liver diseases. Herein, we present an overview of liver NK cell properties with regard to phenotype, func.ion, and subset composition at steady state, and we also summarize the complex reciprocal interac.ions between liver NK cells and other cell types within the local environment of the liver. We also provide an overview of recent advances demonstrating the roles of NK cells in viral hepatitis, including a discussion of NK cell altered states and their beneficial versus harmful effects during hepatitis B virus and hepatitis c virus infec.ion.

关键词： NK cells liver HBV HcV

Dilation theory and analytic model theory for doubly commuting sequences of c._(0)-contrac.ions

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Science c.ina Mathematics 2023年第2期66卷 303-340页

作者： hui Dan Kunyu Guo college of Mathematics Sichuan UniversityChengdu 610065China School of Mathematical Sciences Fudan UniversityShanghai 200433China

it is known that every c·_(0)-contrac.ion has a dilation to a Hardy *** leads to an elegant analytic func.ional model for c·_(0)-contrac.ions,and has motivated lots of further works on the model theory and generalizations to commuting tuples of c·_(0)-*** this paper,we focus on doubly commuting sequences of c·_(0)-contrac.ions,and establish the dilation theory and the analytic model theory for these sequences of *** results are applied to generalize the Beurling-Lax theorem and Jordan blocks in the multivariable operator theory to the operator theory in the infinite-variable setting.

关键词： doubly commuting sequence dilation theory analytic func.ional model Beurling-Lax theorem Jordan block

An experimental determination of W,Nb,and Ta partition coefficients between P-rich peraluminous granitic melt and coexisting aqueous fluid

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c.inese Journal Of Geochemistry 2015年第2期34卷 194-200页

作者： Yong Tang hui Zhang Laboratory for High Temperature and High Pressure Study of the Earth's interior Institute of GeochemistryChinese Academy of Sciences

The partition coefficients of W,Nb,and Ta between the P-rich peraluminous granitic melt and the coexisting aqueous fluid were determined at 800-850 °c and 0.5-1.5 *** experimental results showed that the partition coefficients D_w,D_(Nb) and D_(Ta)(D_i^(v/m) = c.i^V/c.i^m,where c.i^V and c.i^m denote the concentrations of an element,i,in the aqueous fluid and the melt,respec.ively) were less than *** partition coefficients were affected by pressure,but there was no evidence for the complexation of P2O5 with these elements in the granitic melt or aqueous fluid,except for with W in the *** results showed that W,Nb,and Ta tended to partition into the granitic melt and,in the late period of crystallization of P-rich magma,they formed independent minerals.

关键词：分配系数实验测定水流体过铝质熔体 Nb 共存钽

comparative Analyses of Vertical Structure of Deep convec.ive clouds Retrieved from Satellites and Ground-Based Radars at Naqu over the Tibetan Plateau

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Journal of Meteorological Research 2019年第3期33卷 446-462页

作者： hui Wang Xueliang Guo State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences China Meteorological Administration Beijing 100081 Key Laboratory for cloud Physics of c.ina Meteorological Administration Chinese Academy of Meteorological Sciences China Meteorological Administration Beijing 100081

in order to improve understanding of deep convec.ive clouds over the Tibetan Plateau, characteristics of vertical structure of a deep strong convec.ive cloud over Naqu station and a deep weak convec.ive cloud approximately 100 km to the west of Naqu station, which occurred over 1300-1600 Beijing Time (BT) 9 July 2014 during the Third Tibetan Plateau Atmospheric Science Experiment (TiPEX-Ⅲ), are analyzed, based on multi-source satellite data from TRMM, cloudSat, and Aqua, and radar data from ground-based vertically pointing radars (c-band frequency-modulated continuous-wave radar and KA-band millimeter wave cloud radar). The results are as follows.(1) The horizontal scales of both the deep strong and deep weak convec.ive clouds were small (10-20 km), and their tops were high[15-16 km above sea level (ASL)]. Across the level of 0℃ isotherm in the deep strong convec.ive cloud, the reflec.ivity increased rapidly, suggesting that the melting process of solid precipitation particles through the 0℃ level played an important role. A bright band located at 5.5 km ASL (i.e., 1 km above ground level) appeared during the period of convec.ion weakening.(2) The reflec.ivity values from TRMM precipitation radar below 11 km were found to be overestimated compared to those derived from the c-band frequency-modulated continuous-wave radar.(3) Deep convec.ive clouds were mainly ice clouds, and there were rich small ice particles above 10 km, while few large ice particles were found below 10 km. The microphysical processes of deep strong and deep weak convec.ive clouds mainly included mixed-phase process and glaciated process, and the mixed-phase process can be divided into two types:one was the rimming process below the level of -25℃(deep strong convec.ive cloud) or -29℃(deep weak convec.ive cloud) and the other was aggregation and deposition process above that level. The latter process was accompanied with fast increase in ice particle effec.ive radius. The above evidence from space-

关键词： deep convec.ive clouds the Tibetan Plateau vertical structure satellite retrieval radar observation