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1Principles,structures,and implementation of reconfigurable ternary optical processors显示文摘This paper discusses the principles,structures,and implementation procedures for reconfiguring a ternary optical processor (TOP).Typical structures,classifications,and naming of the TOP and basic operation units (BOUs) are described in this paper.The circuit implementations,commands,and processes for the reconfiguration are also discussed in detail.A simple analysis of the high performance and low power consumption of ternary optical computers is presented.Finally,an experiment is performed on reconfiguring a 1-bit BOU,which shows that the principles of reconfigurable TOPs are valid,and that the implementations and commands for the reconfiguration are effective.JIN Yi WANG HongJian OUYANG shan ZHOU Yu SHEN YunPu PENG JunJie LIU XueMin 2011Science China(Information Sciences)2011,54,11:23
2Temporal and spatial variations of stem CO_(2) efflux of three species in subtropical China显示文摘Aims Although stem CO_(2) efflux is critical to ecosystem carbon and energy balance and its feedback to future climate change,little information is available on stem CO_(2) efflux and its responses to temperature,especially in subtropical China.This study aims to(i)evaluate the temporal and spatial variations of stem CO_(2) efflux of three species,including oak(Quercus acutissima Carr.),masson pine(Pinus massoniana Lamb.)and loblolly pine(Pinus taeda Linn.)in subtropical China and(ii)analyze the temperature sensitivity of stem CO_(2) efflux in the three species based on 2-year field measurements.Methods We measured stem CO_(2) efflux and stem temperature(at 3 cm depth)of the three species using the horizontally oriented soil chamber technique from September 2008 to August 2010.We also conducted a 24-h measurement to examine the diurnal variation of stem CO_(2) efflux in three consecutive days in April 2009.Important findings The temporal dynamics of stem CO_(2) efflux followed the change of the stem temperature in a 3-cm depth with a bell-shaped curve in the three species.Stem temperature explained 77–85%of the seasonal variations of stem CO_(2) efflux over the entire study period in the three species.The temperature sensitivity(Q_(10))of stem CO_(2) efflux was obviously different among the three species with higher Q10 value found in oak(2.24)and lower values in the coniferous species(1.76 and 1.63).Our results also showed that the Q10 values of stem CO_(2) efflux in all the three species were lower in the growing season than that in the non-growing season,indicating that the growth and maintenance respiration had different temperature responses.Moreover,we found that the temperature-normalized stem CO_(2) efflux(R_(10))changed greatly between the growing and non-growing seasons in oak and masson pine,but not in loblolly pine.Additionally,we also found that in the non-growing season,the principal factor responsible for the spatial variation of stem CO_(2) efflux among the 15 sampling trees was sapwood volume,whereas in the growing season,stem CO_(2) efflux was closely related to annual dry-matter production in the three subtropical species.Qingpeng Yang Ming Xu Yonggang Chi Yunpu Zheng Ruichang Shen Peixue Li Huitang Dai 2012Journal of Plant Ecology2012,5,2:7
3Microwave-Assisted Decarboxylation of Sodium Oleate and Renewable Hydrocarbon Fuel Production显示文摘The carboxyl terminal of sodium oleate has a stronger polarity than that of oleic acid;this terminal is more likely to be dipole polarized and ionically conductive in a microwave field.Sodium oleate was used as the model compound to study the decarboxylation of oleic acid leading to hydrocarbon formation via microwave-assisted pyrolysis technology.The pyrolysis gas,liquid,and solid products were precisely analyzed to deduce the mechanism for decarboxylation of sodium oleate.Microwave energy was able to selectively heat the carboxyl terminal of sodium oleate.During decarboxylation,the double bond in the long hydrocarbon chain formed a p-πconjugated system with the carbanion intermediate.The resulting p-πconjugated system was more stable and beneficial to the pyrolysis reaction(decarboxylation,terminal allylation,isomerization,and aromatization).The physical properties of pyrolysis liquid were generally similar to those of diesel fuel,thereby demonstrating the possible use of microwaves for controlling the decarboxylation of sodium oleate in order to manufacture renewable hydrocarbon fuels.Wang Yunpu Liu Yuhuan Ruan Rongsheng Wen Pingwei Wan Yiqin Zhang Jinsheng 2013China Petroleum Processing & Petrochemical Technology2013,15,3:5
4Microwave-assisted pyrolysis of vegetable oil soapstock:Comparative study of rapeseed,sunflower,corn,soybean,rice,and peanut oil soapstock显示文摘In this study,the effects of catalytic temperature and the type of soapstock on products from microwave-assisted pyrolysis were investigated.HZSM-5 was used as the catalyst to study the pyrolysis of six different soapstocks at 200℃,300℃,and 400℃ catalytic temperature.Results showed that the bio-oil yields initially increased and then decreased with the increase in catalytic temperature.When the catalytic temperature was 300℃,the bio-oil reached up to the maximum value(65.8 wt.%).Findings indicated that the composition of bio-oil was related to the degree of unsaturation of fatty acids sodium in the soapstocks.In the case of saturated fatty acid sodium,a series of alkanes was formed,whereas the pyrolysis of monounsaturated fatty acid sodium resulted mainly in cycloalkanes,the cycloalkenes obtained from bio-oil was produced by polyunsaturated fatty acid sodium.Yunpu Wang Shumei Zhang Qiuhao Wu Dengle Duan Yuhuan Liu Roger Ruan Guiming Fu Leilei Dai Lin Jiang Zhenting Yu Zihong Zeng Xiaojie Tian Xiuhua Yang 2019International Journal of Agricultural and Biological Engineering2019,12,6:3
5Breakthrough Technologies for the Biorefining of Organic Solid and Liquid Wastes显示文摘有机固液废弃物包含大量能量、养分和水分,不应仅视其为废物。数十年来,人们一直对城市固体废物进行回收、堆制和燃烧,并从中提取能量和有价值的物质。污水的首要管理策略是治理和排放。随着技术的进步,通过新方法使利用固体废物和废水成为可能。考虑到废物特殊的化学、物理和生物性质,需要整合多种技术以使废物的能量和价值回收最大化。为此,生物炼制是完全利用废物中的能量和价值的一个合适的方法。研究证明,不可回收废弃物和生物固体可通过不同方法转化为可利用的热能、电能、燃料和化学品,并且液体废物或能帮助农作物和藻类的成长,为能量回收和食物生产提供不同的选择。本文针对有机固液废物提出新型生物炼制方案,这些废物来源于城市废料、食品和生物加工厂以及动物生产设施。四大新型突破性科技——真空辅助高温厌氧消化、扩展鱼菜共生系统、含油废物经甘油裂解制取生物柴油和微波辅助热化学转化,均可运用于生物炼制方案中,从而成功将废物转化,用以生产化学品、化肥、能量(沼气、合成气、生物柴油和生物油)、食物、饲料,得到干净的水并显著减少污染物的排放。Paul Chen Erik Anderson Min Addy Renchuan Zhang Yanling Cheng Peng Peng Yiwei Ma Liangliang Fan Yaning Zhang Qian Lu Shiyu Liu Nan Zhou Xiangyuan Deng Wenguang Zhou Muhammad Omar Richard Griffith Faryal Kabir Hanwu Lei Yunpu Wang Yuhuan Liu Roger Ruan 2018Engineering2018,4,4:3
6Synthesis of Biodiesel Using ZrO_2 Polycrystalline Ceramic Foam Catalyst in a Tubular Reactor显示文摘With the help of the ceramic foam research efforts and preparation techniques, the ZrO2 polycrystalline ceramic foam catalyst was synthesized, and its characteristics, including the crystal structure, the phase composition, the acid–base properties, and the microstructure, were analyzed by XRD, SEM, Py-IR, and BET techniques. The performance of the ZrO2 polycrystalline ceramic foam catalyst in a tubular reactor was investigated via biodiesel synthesis using S. wilsoniana oil and methanol. The effects of reaction conditions(i.e., reaction temperature, reaction pressure, and volume ratio of methanol to S. wilsoniana oil) on transesterification efficiency were investigated, and the reaction conditions were optimized using RSM. The optimum reaction temperature, reaction pressure, and volume ratio of methanol to S. wilsoniana oil were determined to be 290 ℃, 10 MPa, and 4:1, respectively. Under this condition, the FAME content in the product oil reached 98.38%. The performance of the ZrO2 polycrystalline ceramic foam catalyst synthesized in this work for biodiesel synthesis from S. wilsoniana oil with a moisture content of 7.1% and an acid value of 130.697 mg KOH/g was examined, and the FAME content in the product oil was found to be 93% and 97.67%, respectively. The FAME content in the product oil exceeded 97% after five consecutive cycles(12 h per cycle of use) of the catalyst. The proposed catalyst represents a new type of solid catalyst with excellent acid resistance, water resistance, esterification efficiency, and catalytic stability.Wang Yunpu Fan Liangliang Dai Leilei Liu Yuhuan Ruan Roger Liu Shitao Zhang Xueqin Wan Yiqin 2015China Petroleum Processing & Petrochemical Technology2015,17,3:3
7Carbon Materials for Chemical Capacitive Energy Storage显示文摘Yunpu Zhai Yuqian Dou Dongyuan Zhao Pasquale F. Fulvio Richard T. Mayes Sheng Dai 2011Adv. Mater2011,,42:2
8Chemical control synthesis of nanocrystalline SnO2 by hydrothermal reaction 显示文摘He Yunpu Li Yadong 1999Materials Letters1999,40,:1
9Effects of Microwave Torrefaction with Mg(OH)2 on Characteristics of Bio-oil from Co-pyrolysis of Straw Stalk and Soapstock显示文摘This study investigated the effects of torrefaction with Mg(OH)2 on the properties of bio-oil formed from the microwave-assisted catalytic fast co-pyrolysis of straw stalk and soapstock.The effects of torrefaction temperature and residence time on the yield and composition of bio-oil were discussed.Results showed that the torrefaction temperature and residence time remarkably influenced the yield and composition of bio-oil.With the increase in temperature and time,the bio-oil yield and the proportion of oxygen-containing compounds decreased,while the proportion of aromatic compounds increased.When the feedstocks were subject to torrefaction reaction for 20 min at 260°C,the proportion of oxygen-containing compounds decreased from 29.89%to 16.49%.Meanwhile,Mg(OH)2 could render the deoxidization function of torrefaction process increasingly noticeable.The proportion of the oxygen-containing compounds reached a minimum(14.41%),when the biomass-to-Mg(OH)2 ratio was 1:1.Wen Pingwei Zhou Yue Dai Leilei Wang Yunpu Liu Yuhuan Ruan Roger 2019China Petroleum Processing & Petrochemical Technology2019,21,3:1
10Synthesis and characterization of surface initiated polymer brush prepared by reverse atom transfer radical polyraelization显示文摘Wang Yunpu Pei Xiaowei He Xiaoyan 2005Eur Polyra J2005,41,4:1
11Synthesis of well-defined, polymer grafted silica nanloparticles via reverse ATRP 显示文摘Wang Yunpu Pei Xiaowei He Xiaoyan 2006Eur Polym J2006,41,6:1
12Progress in the study of algae and mosses in biological soil crusts显示文摘Algae and mosses are not only two of the familiar communities in the process of desert vegetational succession,but also have the highest biomass in biological soil crusts.Meanwhile,being the pioneer plants,algae and mosses are involved in the establishment of biological soil crusts,which have great importance in arid environments and play a major role in desert ecosystems,such as being the indicator of the vegetation type,soil-holding,preventing erosion by water and wind,and sand fixation.This paper reviews the advances in the study of algae and mosses in arid and semi-arid areas.It mainly describes the ecological functions of algae and mosses including their influences on water cycle,circulation of substances,and community succession.In addition,the relationships between algae and mosses are discussed.Finally,some suggestions are proposed for the research orientations of algae and mosses in biological soil crusts.Ecologically,algae and mosses have significant ecological importance in arid areas,especially in those areas where environmental problems are becoming increasingly serious.Jiancheng ZHAO Yunpu ZHENG Bingchang ZHANG Ying CHEN Yuanming ZHANG 2009Frontiers in Biology2009,4,2:1
13显示文摘Wang Rongmin Feng Huixia Wang Yunpu 2000J Mol Catal A: Chem2000,151,12:1
14Preparation and properties of polyacrylate/bentonite superabsorbent hy- brid via intercalated polymerization显示文摘Zhang Ji Yuan Kun Wang Yunpu 2007Materials Letters2007,61,2:1
15Production of high heat value fuels by microwave pyrolysis of microalgae oil soap under nitrogen environments显示文摘Wang Yunpu Liu Yuhuan Ruan Rongsheng 2012Advanced Materials Research2012,,:1
16Production of renewable hydrocarbon fuels Thermochemical behavior of fatty acid soap decarboxylation during microwave-assisted pyrolysis显示文摘Wang Yunpu Liu Yuhuan Ruan Rongsheng 2011Advanced Materials Research2011,1,:1
17Two-step catalytic hydrodeoxygenation of fast pyrolysis oil to hydrocarbon liquid fuels显示文摘Xu Xingmin Zhang Changsen Liu Yonggang Zhai Yunpu Zhang Ruiqin 2013Chemosphere2013,93,:1
18A novel P-doped and NCDs loaded g-C_(3)N_(4) with enhanced charges separation for photocatalytic hydrogen evolution显示文摘Graphite carbon nitride(g-C_(3)N_(4)) is a promising non-metal photocatalyst for photocatalytic hydrogen production, but its performance is still limited due to sluggish charges separation and low utilization of light.In this work, P-doped and N-doped carbon dots(NCDs) supported g-C_(3)N_(4)were successfully prepared via hydrothermal and polymerization reactions. The sub-bandgap formed by P-doping enhances the utilization of visible light, and the high electron density of P sites is conducive to the trapping of holes. NCDs also improve light utilization and, more importantly, act as electron acceptors and transporters to promote electron transport. The built-in electric field formed by the synergy of P-doping and NCDs-loading greatly promotes the separation of charges. The PCN/NCDs showed a significantly improved hydrogen evolution activity of 3731 μmol h^(-1)g^(-1), which was 6.7 times that of pure carbon nitride(560 μmol h^(-1)g^(-1)). This strategy may be generalized to the design of g-C_(3)N_(4)-based photocatalysts, facilitating the separation of charges for enhanced catalytic activity.Shuaiyang Zhang Yan Yang Yunpu Zhai Jiaqi Wen Meng Zhang Jingkun Yu Siyu Lu 2023Chinese Chemical Letters2023,34,4:1
19Direct triblock-copolymer-templating sunthesis of ordered nitrogen- containing mesoporous polymers 显示文摘YANG Jianping ZHAI Yunpu Deng Yanghui 2010J Colloid Interface Sci2010,342,12:1
20显示文摘Wang Rongmin Feng Huixia Wang Yunpu 1998Indian J Chem1998,37,4:1
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