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Drying characteristics, functional properties and in vitro digestion of purple potato slices dried by different methods

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Journal of Integrative Agriculture 2019年第9期18卷 2162-2172页

作者： qiu gan JIANG Yong-li DENG Yun Department of Food Science and Technology Shanghai Jiao Tong University

The drying characteristics,physico-chemical and functional properties,as well as starch digestibility,of purple potato slices dried using different methods(such as,vacuum freeze-drying,VFD;hot-air drying,HAD;air-impingement jet drying,AIJD;and far-infrared assisted heat-pump drying,FIHPD)were *** rate was the highest(3.0 g 100 g^-1 min^-1)using AIJD,followed by FIHPD and HAD,and the rate of VFD was the lowest one(0.3 g 100 g^-1 min^-1).Drying data were fitted to 12 thin-layer drying models,with the Midilli model giving the best ***,AIJD showed higher diffusivity(5.5×10^-10 m^2 s^–1)and energy efficiency(55 J g^-1)than any other drying method used in this *** reference to the samples dried by VFD,the starch granules of the samples obtained by HAD,FIHPD,and AIJD exhibited different extent of disruption,which significantly increased their water absorption capacity,swelling power,and in vitro digestibility,but decreased the peak *** sample resulting from AIJD had the greatest water absorption capacity(7.9 g g^-1)and solubility(21.6%),but the smallest syneresis rate(48%).Good correlation coefficients(R^2>0.98)implied that the pseudofirst order kinetic model adequately described the rate and extent of starch digestion of dried potato *** from AIJD and FIHPD showed the highest digestibility percentages,reaching to 72.4 and 72.5%.Based on the drying rate,specific energy consumption,functional properties and digestibility,AIJD appeared to be quite effective and suitable to be transferred on the industry scale.

关键词： purple potato air-impingement jet drying(AIJD) drying characteristics flour properties starch digestibility

Ionic Conduction and Fuel Cell Performance of Ba0.97Ce0.8Ho0.2O3-α Ceramic

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Chinese Journal of Chemical Physics 2006年第4期19卷 347-351页

作者： Li-gan qiu Department of Chemistry Yancheng Normal College Yancheng 224002 China

The perovskite-type-oxide solid solution Ba0.97Ce0.8Ho0.2O3-α was prepared by high temperature solidstate reaction and its single-phase character was confirmed by X-ray diffraction. The ionic conduction of the sample was investigated using electrical methods at elevated temperatures, and the performance of the hydrogen-air fuel cell using the sample as solid electrolyte was measured, which were compared with those of BaCe0.8Ho0.2O3-α. In wet hydrogen, BaCe0.8Ho0.2O3-α almost exhibits pure protonic conduction at 600-1000℃, and its protonic transport number is 1 at 600-900 ℃ and 0.99 at 1000 ℃. Similarly, Ba0.97Ce9.8Ho0.2O3-α exhibits pure protonic conduction with the protonic transport number of 1 at 600- 700℃, but its protonic conduction is slightly lower than that of BaCe0.8Ho0.2O3-α, and the protonic transport number are 0.99-0.96 at 800-1000 ℃. In wet air, the two samples both show low protonic and oxide ionic conduction. For Ba0.97Ce0.8Ho0.2O3-α, the protonic and oxide ionic transport numbers are 0.01-0.11 and 0.30-0.31 respectively, and for BaCe0.8Ho0.2O3-α, 0.01-0.09 and 0.27-0.33 respectively. Ionic conductivities of Ba0.97Ce0.8Ho0.2O3-α are higher than those of BaCe0.8Ho0.2O3-α under wet hydrogen and wet air. The performance of the fuel cell using Ba0.97Ce0.8Ho0.2O3-α as solid electrolyte is better than that of BaCe0.8Ho0.2O3-α. At 1000 ℃, its maximum short-circuit current density and power output density are 465 mA/cm^2 and 112 mW/cm^2, respectively.

关键词： Ba0.97Ce0.8Ho0.2O3-α Protonic conduction Conductivity Gas concentration cell Fuel cell

Validation of full cavitation model in cryogenic fluids

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Chinese Science Bulletin 2009年第10期54卷 1633-1640页

作者： CAO XiaoLi ZHANG XiaoBin qiu LiMin gan ZhiHua Institute of Refrigeration and Cryogenics Zhejiang University Hangzhou 310027 China

Numerical simulation of cavitation in cryogenic fluids is important in improving the stable operation of the propulsion system in liquid-fuel rocket. It also represents a broader class of problems where the fluid is operating close to its critical point and the thermal effects of cavitation are pronounced. The present article focuses on simulating cryogenic cavitation by implementing the "full cavitation model", coupled with energy equation, in conjunction with iterative update of the real fluid properties at local temperatures. Steady state computations are then conducted on hydrofoil and ogive in liquid nitrogen and hydrogen respectively, based on which we explore the mechanism of cavitation with thermal effects. Comprehensive comparisons between the simulation results and experimental data as well as previous computations by other researchers validate the full cavitation model in cryogenic fluids. The sensitivity of cavity length to cavitation number is also examined.

关键词：空化模型低温液体验证数值模拟低温流体稳态计算液体燃料推进系统

Any-polar resistive switching behavior in Ti-intercalated Pt/Ti/HfO_(2)/Ti/Pt device

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Chinese Physics B 2021年第11期30卷 656-660页

作者： Jin-Long Jiao qiu-Hong gan Shi Cheng Ye Liao Shao-Ying Ke Wei Huang Jian-Yuan Wang Cheng Li Song-Yan Chen Department of Physics and Jiujiang Research Institute Xiamen UniversityXiamen 361005China College of Physics and Information Engineering Minnan Normal UniversityZhangzhou 363000China

The special any-polar resistive switching mode includes the coexistence and stable conversion between the unipolar and the bipolar resistive switching mode under the same compliance *** the present work,the any-polar resistive switching mode is demonstrated when thin Ti intercalations are introduced into both sides of Pt/HfO_(2)/Pt RRAM *** role of the Ti intercalations contributes to the fulfillment of the any-polar resistive switching working mechanism,which lies in the filament constructed by the oxygen vacancies and the effective storage of the oxygen ion at both sides of the electrode interface.

关键词： filament memory resistive switching

开放式环境下支持协作设计的并发控制机制的研究

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通信学报 2006年第11期27卷 90-95页

作者：甘秋玲李陶深广西大学计算机与电子信息学院中南大学信息科学与工程学院湖南长沙410083

针对现有的分布式并发控制机制存在的缺陷,提出一种适合开放式环境下协作设计事务的并发控制机制。该机制将只读事务和更新事务区分开来,只读事务在执行时遵守多版本时间戳排序协议,而更新事务的执行将按基于两阶段有序相容性封锁的多... 详细信息

针对现有的分布式并发控制机制存在的缺陷,提出一种适合开放式环境下协作设计事务的并发控制机制。该机制将只读事务和更新事务区分开来,只读事务在执行时遵守多版本时间戳排序协议,而更新事务的执行将按基于两阶段有序相容性封锁的多粒度封锁协议进行。这样不仅使用户可以快速得到查询结果,而且有效提高了协作设计事务的并发度。实验分析表明,该机制比较适合于开放式的协同设计环境。

关键词：多版本多粒度并发控制有序相容性封锁协作设计

Ionic Conduction and Fuel Cell Performance of Ba0.98Ce0.8Tm0.2O3-α Ceramic

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Chinese Journal of Chemical Physics 2010年第6期23卷 707-712,746页

作者：仇立干王茂元盐城师范学院化学化工学院盐城224051

The perovskite-type oxide solid solution Ba0.98Ce0.8Tm0.2O3-α was prepared by high temperature solid-state reaction and its single phase character was confirmed by X-ray diffraction. The conduction property of the sample was investigated by alternating current impedance spectroscopy and gas concentration cell methods under different gases atmospheres in the temperature range of 500-900 ℃. The performance of the hydrogen-air fuel cell using the sample as solid electrolyte was measured. In wet hydrogen, the sample is a pure protonic conductor with the protonic transport number of 1 in the range of 500-600 ℃, a mixed conductor of proton and electron with the protonic transport number of 0.945-0.933 above 600 ℃. In wet air, the sample is a mixed conductor of proton, oxide ion, and electronic hole. The protonic transport numbers are 0.010-0.021, and the oxide ionic transport numbers are 0.471-0.382. In hydrogen-air fuel cell, the sample is a mixed conductor of proton, oxide ion and electron, the ionic transport numbers are 0.942 0.885. The fuel cell using Ba0.98Ce0.8Tm0.2O3-α as solid electrolyte can work stably. At 900 ℃, the maximum power output density is 110,2 mW/cm2, which is higher than that of our previous cell using Ba0.98Ce0.8Tm0.2O3-α （x〈≤1, RE=Y, Eu, Ho） as solid electrolyte.

关键词： Ba0.98Ce0.8Tm0.2O3-α Ionic conduction Gas concentration cell Alternating current impedance Fuel cell

固体电解质Ba_xCe_(0.8)Ho(0.2)O(3-α)的导电性及其燃料电池性能

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无机化学学报 2009年第2期25卷 339-344页

作者：王茂元仇立干盐城师范学院化学化工学院盐城224051

用高温固相反应法合成了BaxCe0.8Ho0.2O3-α(x=1.03,1,0.97)系列固体电解质,粉末XRD结果表明,各材料均为钙钛矿型斜方晶单相结构。用交流阻抗谱技术研究了材料在600～1000℃下、湿润氢气和湿润空气气氛中的导电性;研究了它们的氢-空气... 详细信息

用高温固相反应法合成了BaxCe0.8Ho0.2O3-α(x=1.03,1,0.97)系列固体电解质,粉末XRD结果表明,各材料均为钙钛矿型斜方晶单相结构。用交流阻抗谱技术研究了材料在600～1000℃下、湿润氢气和湿润空气气氛中的导电性;研究了它们的氢-空气燃料电池性能;讨论了材料的非化学计量组成对其电性能的影响。结果表明,在600～1000℃温度范围内、湿润氢气和湿润空气气氛中,该系列材料的电导率随温度和钡离子含量的变化均与以该系列材料为固体电解质的氢-空气燃料电池性能随温度和钡离子含量变化的次序一致,即:非化学计量组成材料BaxCe0.8Ho0.2O3-α(x=1.03,0.97)具有较化学计量组成材料BaxCe0.8Ho0.2O3-α(x=1)高的电导率和氢-空气燃料电池输出功率密度,其中Ba1.03Ce0.8Ho0.2O3-α有最高的电导率(1000℃时、在湿润的氢气气氛中:2.10×***-1;在湿润的空气气氛中:3.46×***-1)和最大的氢-空气燃料电池输出功率密度(1000℃时:***-2)。

关键词： BaxCe0.8Ho0.2O3-α 固体电解质导电性燃料电池非化学计量组成

BaCe_(0.5)Zr_(0.4)La_(0.1)O_(3-α)陶瓷的制备及其电性能

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化学学报 2009年第12期67卷 1349-1354页

作者：王茂元仇立干左玉香盐城师范学院化学化工学院盐城224051

以高温固相反应法合成了BaCe0.5Zr0.4La0.1O3-α陶瓷.粉末XRD结果表明,该陶瓷材料为单一钙钛矿型BaCeO3斜方晶结构,在高温下、CO2或水蒸气气氛中具有较高的稳定性.以陶瓷材料为固体电解质、多孔性铂为电极,用交流阻抗谱技术测定了材料在... 详细信息

以高温固相反应法合成了BaCe0.5Zr0.4La0.1O3-α陶瓷.粉末XRD结果表明,该陶瓷材料为单一钙钛矿型BaCeO3斜方晶结构,在高温下、CO2或水蒸气气氛中具有较高的稳定性.以陶瓷材料为固体电解质、多孔性铂为电极,用交流阻抗谱技术测定了材料在500～900℃下,不同气体气氛中的电导率;用气体浓差电池方法测定了材料在干燥空气、湿润空气和湿润氢气气氛中的离子迁移数,研究了材料的离子导电特性.结果表明,在500～900℃下,干燥或湿润的气体气氛中,随着温度升高和氧分压增大,材料的电导率均增大.在干燥空气中,陶瓷材料的氧离子迁移数为0.685～0.147,是一个氧离子与电子空穴的混合导体.在湿润空气中,陶瓷材料的质子迁移数为0.001～0.006,氧离子迁移数为0.618～0.164,是一个质子、氧离子和电子空穴的混合导体.在湿润氢气中,500～700℃温度范围内,陶瓷材料的质子迁移数为1,是一个纯的质子导体;而在800～900℃温度范围内,陶瓷材料的质子迁移数为0.957～0.954,是一个质子与电子的混合导体,质子电导占主导.

关键词： BaCe0.5Zr0.4La0.1O3-α 阻抗谱气体浓差电池离子导电性

Ba_(0.95)Ce_(0.9)Y_(0.1)O_(3-α)固体电解质的氧离子导电性

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无机化学学报 2000年第6期16卷 978-982页

作者：仇立干马桂林盐城师范学院化学系盐城224002 苏州大学理学院化学化工系苏州215006

Ba0.95Ce0.9Y0.1O3－α solid electrolyte was prepared by high temperature solid state reaction. The electrochemical oxygen permeation (oxygen pumping) rates and oxide ion transport number in this electrolyte were detected in the temperature of 600～ 1000℃ . It was found that this electrolyte exhibited the oxide ion conduction with the oxide ion transport number of 0.3～ 0.5.

关键词：铈酸钡固体电解质质子导电性氧离子导电性