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Unique Charge storage characteristics of FEP//THV//FEP Sandwich Electret Membrane Polarized by Thermally Charging Technology

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Chinese Physics Letters 2014年第12期31卷 123-126页

作者：陈钢进雷明凤肖慧明吴玲 Lab of Eleetrets and Its Application Hangzhou Dianzi University Hangzhou 310018

Nowadays, electrets have been widely applied in acoustic electric sensors such as microphones and other actuators due to its lasting and stable electrostatic field. Recently, research has focus on the application of micro-electro-mechanical systems （MEMS）, especially on electret generator for energy harvesting,where vibration energy can be changed into electrical energy by relative displacement between two electret layers when vibrating. Many kinds of configurations for the electret generator have been proposed, in which the theoretical power output is proportional to the surface charge density of the electret. Therefore, it is crucial to develop a new novel electret with an extremely high surface charge density and long-term stability for electret generators with large power output.

关键词： Unique Charge storage characteristics Sandwich Electret Membrane

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Effect of Different Initial pH on the storage characteristics and Shelf Life of Liquid Diet for Suckling and Weanling Piglets

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Journal of Integrative Agriculture 2014年第1期13卷 134-139页

作者： HE Yu-yong MA Pen LIU Xiao-lan WANG Ren-hua LU Wei College of Animal Science and Technology Jiangxi Agricultural University

An experiment was conducted to investigate the effect of different initial pH on the storage characteristics and shelf life of liquid diet. 45 polypropylene bags were allotted to treatments 1, 2 and 3 on average, 100 g diet and 200 g water were placed into each polypropylene bag, food-grade DL-lactic acid was added to each bag at a rate of 0.0 mL in treatment l, 1.2 mL in treatment 2 and 4.7 mL in treatment 3, air was artificially expelled from each bag prior to heat-sealing. All bags were placed into a cage, cooked with steam at 90~C for 30 rain under normal pressure, then taken out and stored from day 0 to 60 at room temperature. Results indicated that liquid diet in treatment 3 achieved the highest total sensory scores, the pH value had a tendency to decrease and the bacteria count had a tendency to increase in the liquid diet with the advancing of storage time with the advancing of storage time, lowering the initial pH of liquid diet decreased the bacteria count, the AFBl and ZEN concentrations and increased the starch gelatinization degree from day 30 to 60, liquid diet in treatment 3 had a lower （P〈0.01） bacteria count and a higher （P〈0.05） starch gelatinization degree at day 30 and 45 than liquid diet in treatment 1. In conclusion, lowering the initial pH of liquid diet with lactic acid to pH 4 could effectively improve the storage characteristics and shelf life of liquid diet.

关键词： initial pH storage characteristics shelf life liquid diet lactic acid

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storage characteristics of LiNi_(0.8)Co_(0.1+X)Mn_(0.1-X)O_2 (X=0,0.03,0.06) Cathode Materials for Lithium Batteries

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复旦学报（自然科学版） 2007年第5期46卷 823-页

作者： Junho Eom Min Gyu Kim Jaephil Cho Department of Applied Chemistry Kumoh National Institute of Technology GumiKorea Beamline Research Division Pohang Accelerator LaboratoryPohangKorea

1 Results LiNi0.8Co0.1+xMn0.1-xO2 cathodes with x=0,0.03 and 0.06 were prepared by firing a mixture of stoichiometric amounts of LiOH·H2O and coprecipitated Ni0.8Co0.1+xMn0.1-x(OH)2 at 800 ℃ for 15 *** these powders,their storage characteristics upon exposure to air and electrolytes at 90 ℃ were compared before charging and after charging to 4.3 V with a variation of the storage *** the Co content (x) increased in the cathode,both the Ni2+ content in the lithium 3a sites,and the contents of the ...

关键词： LiNi0.8Co0.1Mn0.1O2 storage characteristics cathode material lithium-ion battery

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Indication of hydrogen and oxygen stable isotopes on the characteristics and circulation patterns of medium-low temperature geothermal resources in the Guanzhong Basin,China

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Journal of Groundwater Science and Engineering 2022年第1期10卷 70-86页

作者： Feng Ma Gui-ling Wang Hong-li Sun Zhan-xue Sun The Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuang 050061China Technology Innovation Center for Geothermal&Hot Dry Rock Exploration and Development Minstry of Natural ResourcesShijiazhuang 050061China School of Water Resources&Environmental Engineering East China University of TechnologyNanchang 330000China

Guanzhong Basin is a typical medium-low temperature geothermal field mainly controlled by geo-pressure in the west of *** characteristics of hydrogen and oxygen isotopes were used to analyze the flow and storage modes of geothermal resources in the *** this paper,the basin was divided into six geotectonic units,where a total of 121 samples were collected from geothermal wells and surface water bodies for the analysis of hydrogen-oxygen *** results show that the isotopic signatures of hydrogen and oxygen throughout Guanzhong Basin reveal a trend of gradual increase from the basin edge areas to the basin *** terms of recharge systems,the area in the south edge belongs to the geothermal system of Qinling Mountain piedmont,while to the north of Weihe fault is the geothermal system of North mountain piedmont,where the atmospheric temperature is about 0.2℃-1.8℃in the recharge *** main factors that affect the geothermal waterδ18O drifting include the depth of geothermal reservoir and temperature of geothermal reservoir,lithological characteristics,water-rock interaction,geothermal reservoir environment and residence ***δ18O-δD relation shows that the main source is the meteoric water,together with some sedimentary water,but there are no deep magmatic water and mantle water which recharge the geothermal water in the *** examining the distribution pattern of hydrogen-oxygen isotopic signatures,the groundwater circulation model of this basin can be divided into open circulation type,semi-open type,closed type and sedimentary *** provides some important information for rational exploitation of the geothermal resources.

关键词： Guanzhong Basin Hydrogen-oxygen isotopes storage characteristics Circulation model

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Plant species with extremely small populations(PSESP) in China:A seed and spore biology perspective

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Plant Diversity 2016年第5期38卷 209-220页

作者： Ellie Merrett Wade Jayanthi Nadarajan Xiangyun Yang Daniel Ballesteros Weibang Sun Hugh W.Pritchard Royal Botanic Gardens KewWellcome Trust Millennium Building The Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of Sciences Kunming Botanical Garden Kunming Institute of BotanyChinese Academy of Sciences

Approximately one fifth of the world's plants are at risk of *** these,a significant number exist as populations of few individuals,with limited distribution ranges and under enormous pressure due to habitat *** China,these most-at-risk species are described as 'plant species with extremely small populations'(PSESP).Implementing conservation action for such listed species is *** seeds is one of the main means of ex situ conservation for flowering *** storage could provide a simple and economical method for fern ex situ *** and spore germination in nature is a critical step in species regeneration and thus in situ *** what is known about the seed and spore biology(storage and germination) of at-risk species? We have used China's PSESP(the first group listing) as a case study to understand the gaps in knowledge on propagule biology of threatened plant *** found that whilst germination information is available for 28 species(23%of PSESP),storage characteristics are only known for 8%of PSESP(10 species).Moreover,we estimate that 60%of the listed species may require cryopreservation for long-term *** conclude that comparative biology studies are urgently needed on the world's most threatened taxa so that conservation action can progress beyond species listing.

关键词： Threatened species Orchids storage characteristics Cryopreservation ex situ conservation

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