维普中文期刊产品整合服务
38篇 您的检索式:作者名="Song Zhipeng"
    题名 作者 年代 出处 被引量
1Progress and perspectives in dielectric energy storage ceramics显示文摘Dielectric ceramic capacitors,with the advantages of high power density,fast chargedischarge capability,excellent fatigue endurance,and good high temperature stability,have been acknowledged to be promising candidates for solid-state pulse power systems.This review investigates the energy storage performances of linear dielectric,relaxor ferroelectric,and antiferroelectric from the viewpoint of chemical modification,macro/microstructural design,and electrical property optimization.Research progress of ceramic bulks and films for Pb-based and/or Pb-free systems is summarized.Finally,we propose the perspectives on the development of energy storage ceramics for pulse power capacitors in the future.Dongxu LI Xiaojun ZENG Zhipeng LI Zong-Yang SHEN Hua HAO Wenqin LUO Xingcai WANG Fusheng SONG Zhumei WANG Yueming LI 2021Journal of Advanced Ceramics2021,10,4:16
2Paleogene Tectonic Evolution Controls on Sequence Stratigraphic Patterns in the Central Part of Deepwater Area of Qiongdongnan Basin, Northern South China Sea显示文摘In active rift basins, tectonism is extremely important for sequence stratigraphic patterns, affecting both the sequence architecture and internal makeup. Sequence stratigraphic framework of a Paleogene rift succession in Qiongdongnan Basin, northern South China Sea, was built using seismic profiles, complemented by well logs and cores. One first-order and three second-order sequences were identified on the basis of basin-scale unconformities, and seven third-order sequences are defined by unconformities along the basin margins and correlative conformities within the central basin. Through unconformity analysis and backstripping procedure, the Paleogene synrift tectonic evolution of deepwater area of Qiongdongnan Basin was proved to be episodic, which can be divided into rifting stage-I, rifting stage-II and rifting stage-III. Episodic rifting resulted in the formation of various types of structural slope break belts, which controlled different architectures and internal makeup of sequences. This study enhances the understanding of the control of tectonic evolution on sequence stratigraphic patterns and establishes relevant patterns in a typical rift basin, and further proposes the favorable sandstone reservoirs developing in different sequence stratigraphic patterns, which will be pretty helpful for subtle pool exploration in deepwater area of petroliferous basins.Guangzeng Song Hua Wang Huajun Gan Zhipeng Sun Xiaolong Liu Meng Xu Jinfeng Ren Ming Sun Di Sun 2014Journal of Earth Science2014,25,2:16
3P-E hysteresis loop going slim in Ba0.3Sr0.7TiO3-modified Bi0.5Na0.5TiO3 ceramics for energy storage applications显示文摘(Ba0.3Sr0.7)x(Bi0.5Na0.5)1-xTiO3(BSxBNT,x=0.3–V0.8)ceramics were prepared to investigate their structure,dielectric and ferroelectric properties.BSxBNT ceramics possess pure perovskite structure accompanied from a tetragonal symmetry to pseudo-cubic one with the increase of x value,being confirmed by X-ray diffraction(XRD)and Raman results.The Tm corresponding to a temperature in the vicinity of maximum dielectric constant gradually decreases from 110℃(x=0.3)to-45℃(x=0.8),across Tm=36℃(x=0.5)with a maximum dielectric constant(ɛr=5920@1 kHz)around room temperature.The saturated polarization Ps gradually while the remnant polarization Pr sharply decreases with the increase of x value,making the P-E hysteresis loop of BSxBNT ceramics goes slim.A maximum difference between Ps and Pr(Ps-Pr)is obtained for BSxBNT ceramics with x=0.5,at which a high recoverable energy density(Wrec=1.04 J/cm3)is achieved under an applied electric field of 100 kV/cm with an efficiency ofη=77%.Meanwhile,the varied temperature P-E loops,fatigue measurements,and electric breakdown characteristics for the sample with x=0.5 indicate that it is promising for pulsed power energy storage capacitor candidate materials.Dongxu LI Zong-Yang SHEN Zhipeng LI Wenqin LUO Xingcai WANG Zhumei WANG Fusheng SONG Yueming LI 2020Journal of Advanced Ceramics2020,9,2:8
4Behavior of Siderophile and Chalcophile Elements in the Subcontinental Lithospheric Mantle beneath the Changbaishan Volcano,NE China显示文摘The mantle xenoliths in the Quaternary ChangbaishanVolcano in southern Jilin Province contain spinel-facies lherzolites.The equilibration temperatures for these samples range from 902oC to 1064oC based on the two-pyroxene thermometer of Brey and K?hler(1990),and using the oxybarometry of Nell and Wood(1991),the oxidation state was estimated from FMQ-1.32 to-0.38 with an average value of FMQ-0.81(n=8),which is comparable to that of abyssal peridotites and the asthenospheric mantle.The fO2 values of peridotites,together with their bulk rock compositions(e.g.,Mg#,Al2O3,CaO,Ni,Co,Cr) and mineral compositions(e.g.,Mg# of olivine and pyroxene,Cr# [=Cr/[Cr+Al]] and Mg# [=Mg/[Mg+Fe2+] of spinel),suggest that the present-day subcontinental lithospheric mantle(SCLM) beneath the Changbaishan Volcano most likely formed from an upwelling asthenosphere at some time after the late Mesozoic and has undergone a low degree of partial melting.The studied lherzolite xenoliths show low concentrations of S,Cu,and platinum group elements(PGE),which plot a flat pattern on primitive-mantle normalized diagram.Very low concentrations in our samples suggest that PGEs occur as alloys or hosted by silicate and oxide minerals.The compositions of the studied samples are similar to those of peridotite xenoliths in the Longgang volcanic field(LVF) in their mineralogy and bulk rock compositions including the abundance of chalcophile and siderophile elements.However,they are distinctly different from those of peridotite xenoliths in other areas of the North China Craton(NCC) in terms of Cu,S and PGE.Our data suggest that the SCLM underlying the northeastern part of the NCC may represent a distinct unit of the newly formed lithospheric mantle.WANG Jian LIU Jinlin HATTORI Keiko XU Wenliang XIE Zhipeng SONG Yue 2012Acta Geologica Sinica(English Edition)2012,86,2:8
5Correlation-weighted least squares residual algorithm for RAIM显示文摘The Least Squares Residual(LSR)algorithm,one of the classical Receiver Autonomous Integrity Monitoring(RAIM)algorithms for Global Navigation Satellite System(GNSS),presents a high Missed Detection Risk(MDR)for a large-slope faulty satellite and a high False Alarm Risk(FAR)for a small-slope faulty satellite.From the theoretical analysis of the high MDR and FAR cause,the optimal slope is determined,and thereby the optimal test statistic for fault detection is conceived,which can minimize the FAR with the MDR not exceeding its allowable value.To construct a test statistic approximate to the optimal one,the CorrelationWeighted LSR(CW-LSR)algorithm is proposed.The CW-LSR test statistic remains the sum of pseudorange residual squares,but the square for the most potentially faulty satellite,judged by correlation analysis between the pseudorange residual and observation error,is weighted with an optimal-slope-based factor.It does not obey the same distribution but has the same noncentral parameter with the optimal test statistic.The superior performance of the CW-LSR algorithm is verified via simulation,both reducing the FAR for a small-slope faulty satellite with the MDR not exceeding its allowable value and reducing the MDR for a large-slope faulty satellite at the expense of FAR addition.Dan SONG Chuang SHI Zhipeng WANG Cheng WANG Guifei JING 2020Chinese Journal of Aeronautics2020,33,5:6
6Sequence Stratigraphy and Sedimentary Facies of Lower Oligocene Yacheng Formation in Deepwater Area of Qiongdongnan Basin,Northern South China Sea:Implications for Coal-Bearing Source Rocks显示文摘For unveiling coal-bearing source rocks in terrestrial-marine transitional sequences, the sequence stratigraphic framework and sedimentary facies of Lower Oligocene Yacheng Formation of Qiongdongnan Basin were investigated using seismic profiles, complemented by well bores and cores. Three third-order sequences are identified on the basis of unconformities on basin margins and correlative conformities in the basin center, namely SQYC3, SQYC2 and SQYC1 from bottom to top. Coal measure in Yacheng Formation of Qiongdongnan Basin were deposited within a range of facies associations from delta plain/tidal zone to neritic sea, and three types of favourable sedimentary facies associations for coal measure were established within the sequence stratigraphic framework, including braided delta plain and alluvial fan, lagoon and tidal flat, and fan delta and coastal plain facies associations. Results shown that, in the third-order sequences, coal accumulation in landward areas(such as delta plain) of the study area predominantly correlates with the early transgressive systems tract(TST) to middle highstand systems tract(HST), while in seaward areas(such as tidal flat-lagoon) it correlates with the early TST and middle HST. The most potential coal-bearing source rocks formed where the accommodation creation rate(Ra) and the peat-accumulation rate(Rp) could reach a state of balance, which varied among different sedimentary settings. Furthermore, intense tectonic subsidence and frequent alternative marine-continental changes of Yacheng Formation during the middle rift stage were the main reasons why the coal beds shown the characteristics of multi-beds, thin single-bed, and rapidly lateral changes. The proposed sedimentary facies associations may aid in predicting distribution of coal-bearing source rocks. This study also demonstrates that controlling factors analysis using sequence stratigraphy and sedimentology may serve as an effective approach for coal-bearing characteristics in the lower exploration deepwater area of South China Sea.Jinfeng Ren Hua Wang Ming Sun Huajun Gan Guangzeng Song Zhipeng Sun 2014Journal of Earth Science2014,25,5:3
7Inhibiting effect of[HOEmim][BF_4]and[Amim]Cl ionic liquids on the cross-linking reaction of bituminous coal显示文摘In order to reduce the hazard of coal spontaneous combustion,the cross-linking reaction between O-containing functional groups of coal should be inhibited.So the inhibitory effect of an ionic liquid(IL) on the cross-linking reaction was studied.The O-containing functional groups change the weight loss and H_2O,CO_2,CO yields of bituminous coal before and after[H0Emim][BF_4]and[Amim]Cl pre-treatment and were detected by Fourier Transform Infrared spectroscopy(FT1R) and Thermo Gravimetric(TC) analysis.The results show that | AmimjCI has a weaker ability to inhibit the cross-linking reaction of bituminous coal compared to[HOEmim][BF_4].Besides,based on Quantum Chemistry calculation,it was found that the different inhibiting effects of |H0Emim][BF_4]and[Amim]Cl are greatly related to their anions and the H linked with C2 atom on the imidazole ring.The H-donor ability of coal will be enhanced by[HOEmim][BF_4]leading to a weaker cross-linking reaction of coal.Wang Lanyun Xu Yongliang Wang Shaokun Song Zhipeng 2016International Journal of Mining Science and Technology2016,26,2:3
8Relationship Between Perisylvian Essential Language Sites and Arcuate Fasciculus in the Left Hemisphere of Healthy Adults显示文摘Essential language sites and the arcuate fasciculus(AF) have been extensively researched. However, the relationship between them remains insufficiently studied,especially in healthy people. Navigated transcranial magnetic stimulation(n TMS) is increasingly used in language mapping. While enjoying the advantage of non-invasiveness, it is also capable of inducing a virtual lesion in the brain. Thus, it offers the possibility of using the virtuallesion method to study the healthy brain. This study combined n TMS and diffusion tensor imaging(DTI)tractography to investigate the relationship between essential language sites and the AF in 30 healthy right-handedvolunteers. A total of 143 essential language sites were identified using n TMS, and a total of 175 AF terminations were identified using DTI tractography. Sixty-six sites had a direct correlation with the AF, accounting for 46% of the total essential language sites. Forty-seven AF terminations harbored essential language sites, accounting for 27% of the total AF terminations. Upon data rendering to the cortical parcellation system, a region-related heterogeneity of the correlation rate was found. This study provides the first data on the relationship between essential language sites and the AF in healthy adults.Yu Lin Kai Zhang Shuai Li Song Li Jingna Jin Fang Jin Wen Qin Long Hai Meng Zhu Chunshui Yu Zhipeng Liu Tao Yin Xuejun Yang 2017Neuroscience Bulletin2017,33,6:3
9Multi-walled carbon nanotubes covalently functionalized by axially coordinated metal-porphyrins: Facile syntheses and temporally dependent optical performance显示文摘向轴的方向协调了 metal-porphyrin-functionalized 多围的碳 nanotube (MWCNT ) nanohybrids 经由二条不同合成途径(一个壶 1,3-dipolar cycloaddition 反应和那深奥 1,3-dipolar cycloaddition 由亲核的替换跟随了的一条逐步的途径) 被准备,并且通过分光镜的技术描绘了。到 MWCNT 的表面的听卟啉的附件显著地改进他们处理的溶解度和容易。协调的这些向轴的方向(5,10,15,20-tetraphenylporphyrinato ) 锡(IV )(SnTPP )-MWCNTs 展览重要荧光熄灭。结果的 nanohybrids 的第三顺序的非线性的光性质被与毫微秒和微微秒激光脉搏在 532 nm 使用 Z 扫描技术学习。当分别地,毫微秒或微微秒脉搏被采用时,结果证明 nanohybrids 展出重要反向的可饱和的吸收或可饱和的吸收。在毫微秒政体的改进非线性的吸收在继续到 nanohybrids 上被观察并且被归功于到 MWCNT 和化学上依附的金属卟啉的突出的性质的联合。Aijian Wang Jingbao Song Zhipeng Huang Yinglin Song Wang Yu Huanli Dong Wenping Hu Marie P. Cifuentes Mark G. Humphrey Long Zhang Jianda Shao Chi Zhang 2016Nano Research2016,9,2:3
10Remarkably enhanced dielectric stability and energy storage properties in BNT–BST relaxor ceramics by A-site defect engineering for pulsed power applications显示文摘Lead-free bulk ceramics for advanced pulsed power capacitors show relatively low recoverable energy storage density(Wrec)especially at low electric field condition.To address this challenge,we propose an A-site defect engineering to optimize the electric polarization behavior by disrupting the orderly arrangement of A-site ions,in which Ba_(0.105)Na_(0.325)Sr_(0.245−1.5x)□_(0.5x)Bi_(0.325)+xTiO_(3)(BNS_(0.245−1.5x)□_(0.5x)B_(0.325+x)T,x=0,0.02,0.04,0.06,and 0.08)lead-free ceramics are selected as the representative.The BNS_(0.245−1.5x)□_(0.5x)B_(0.325+x)T ceramics are prepared by using pressureless solid-state sintering and achieve large W_(rec)(1.8 J/cm^(3))at a low electric field(@110 kV/cm)when x=0.06.The value of 1.8 J/cm3 is super high as compared to all other W_(rec) in lead-free bulk ceramics under a relatively low electric field(<160 kV/cm).Furthermore,a high dielectric constant of 2930 within 15%fluctuation in a wide temperature range of 40–350℃is also obtained in BNS_(0.245−1.5x)□_(0.5x)B_(0.325+x)T(x=0.06)ceramics.The excellent performances can be attributed to the A-site defect engineering,which can reduce remnant polarization(P_(r))and improve the thermal evolution of polar nanoregions(PNRs).This work confirms that the BNS_(0.245−1.5x)□_(0.5x)B_(0.325+x)T(x=0.06)ceramics are desirable for advanced pulsed power capacitors,and will push the development of a series of Bi0.5Na0.5TiO3(BNT)-based ceramics with high W_(rec) and high-temperature stability.Zhipeng LI Dong-Xu LI Zong-Yang SHEN Xiaojun ZENG Fusheng SONG Wenqin LUO Xingcai WANG Zhumei WANG Yueming LI 2022Journal of Advanced Ceramics2022,11,2:3
11Habitat suitability of Scapharca subcrenata (Lischke) inthe shallow water of the Xiaoheishan Island显示文摘The habitat suitability index(HSI) model was used to identify potential sites for sustainable restoration of ark shell, Scapharca subcrenata(Lischke), in the shallow water of Xiaoheishan Island, using a geographic information system framework. The seven input variables of the HSI model were sediment composition, water temperature, salinity, dissolved oxygen, water depth, p H, and ammonia. A non-linear suitability function for each variable factor was used to transform the value into a normalized quality index ranging from 0(nonsuitability) to 1(best suitability). In present study, the analysis of habitat suitability was conducted for four seasons respectively. The majority of the study area has a high HSI value(>0.6) year round, which implies a strong suitability for restoration, with the optimal habitat located on the eastern side of the island.Correspondence analysis indicated that water temperature was the main factor causing seasonal variation,while sediment composition and water depth were the two major reasons for the differences in sites. The results of this work could provide support for restoration decision making through identification of potential sites for sustainable establishment of S. subcrenata.ZHOU Jian SONG Jingjing BM Qianling LIU Chengyue ZHANG Zhipeng TANG Haitian 2016Acta Oceanologica Sinica2016,35,12:2
12Green and compatible industrial development in Western China显示文摘Western China has lagged a lot in terms of industrial structure and economic development,compared with the national average.And China announced its target of CO_2 emission reduction,i.e.by 2020,CO_2 emission per GDP will drop by40-45%compared with 2005.The target will be incorporated into China's long-term industrial planning.Against this background,this paper will make a comprehensive examination of the industrial development of Western China,aiming to discover a green and compatible way.First,we analyze the spatiotemporal evolution of regional industrial structure for the period 2000-2010.Second,we try to discover the industrial structure optimization path for Western China by employing the Vector Auto Regression model.Lastly,we try to provide some advice and suggestions for further industrial development in Western China.Our examination shows that further industrial development in Western China should pay full attention to resource conservation and recycling,and develop on a green and compatible path.Zhouying Song Weidong Liu Zhipeng Tang 2014Chinese Journal of Population,Resources and Environment2014,12,1:1
13Identification and molecular characterization of Cathepsin L gene and its expression analysis during early ontogenetic development of kuruma shrimp Marsupenaeusjaponicus显示文摘Cathepsin L gene is a member of the cysteine proteinase gene group. In this study Cathepsin L gene was isolated from Kuruma shrimp Marsupenaeus japonicus(Mj-Cathepsin L) and the full-length DNA sequence was 1 963 bp.Mj-Cathepsin L protein showed high homologies with other Cathepsin L proteins documented in vertebrates,mollusks and other crustaceans. Expression analysis of Mj-Cathepsin L gene in different tissues revealed that it was predominant in hepatopancreas. During early ontogenetic development stages Mj-Cathepsin L showed a development-regulated expression, and the Mj-Cathepsin L showed a molting stage-regulated expression during the five molting stages, inferring its role in the ontogenic development of M. japonicus. Two kinds of forms of MjCathepsin L protein: pro-Cathepsin L and Cathepsin L were measured in hepatopancreas, stomach and intestine by Western Blotting.QIAO Ying WANG Jun MAO Yong LIU Min SONG Xiaohong SU Yongquan WANG Chunzhong ZHENG Zhipeng 2017Acta Oceanologica Sinica2017,36,6:1
14Over 50,000 Metagenomically Assembled Draft Genomes for the Human Oral Microbiome Reveal New Taxa显示文摘The oral cavity of each person is home to hundreds of bacterial species.While taxa for oral diseases have been studied using culture-based characterization as well as amplicon sequencing,metagenomic and genomic information remains scarce compared to the fecal microbiome.Here,using metagenomic shotgun data for 3346 oral metagenomic samples together with 808 published samples,we obtain 56,213 metagenome-assembled genomes(MAGs),and more than 64%of the 3589 species-level genome bins(SGBs)contain no publicly available genomes.The resulting genome collection is representative of samples around the world and contains many genomes from candidate phyla radiation(CPR)that lack monoculture.Also,it enables the discovery of new taxa such as a genus Candidatus Bgiplasma within the family Acholeplasmataceae.Large-scale metagenomic data from massive samples also allow the assembly of strains from important oral taxa such as Porphyromonas and Neisseria.The oral microbes encode genes that could potentially metabolize drugs.Apart from these findings,a strongly male-enriched Campylobacter species was identified.Oral samples would be more user-friendly collected than fecal samples and have the potential for disease diagnosis.Thus,these data lay down a genomic framework for future inquiries of the human oral microbiome.Jie Zhu Liu Tian Peishan Chen Mo Han Liju Song Xin Tong Xiaohuan Sun Fangming Yang Zhipeng Lin Xing Liu Chuan Liu Xiaohan Wang Yuxiang Lin Kaiye Cai Yong Hou Xun Xu Huanming Yang Jian Wang Karsten Kristiansen Liang Xiao Tao Zhang Huijue Jia Zhuye Jie 2022Genomics, Proteomics & Bioinformatics2022,20,2:1
15Precise Droplet Manipulation Based on Surface Heterogeneity显示文摘The control of droplet behavior has been investigated for several centuries due to its universality and significance in nature,daily life,and industrial applications.Diverse strategies have been developed and employed to regulate droplet behavior,and great progress has been achieved such as accelerated droplet bouncing,controlled droplet dispensing,and enhanced droplet adhesion.Compared with the strategies utilizing external fields including magnets,heat,light,and electricity as well as various topological structures,the heterogeneous wettability surface provides a facile and efficient way to manipulate droplet behavior and thus has aroused increasing research interest in many fields.The heterogeneous wettability substrate integrates wettable and less wettable regions onto an individual surface,with rational design and a geometrical arrangement.Therefore,it shows more precise,diverse,and controllable interactions with droplets than homogeneous surfaces.In addition to confining the droplet position and morphology and regulating the droplet dynamics,the nonuniformity in wettability can induce a difference in electrical conductivity,nucleation energy barriers,and so forth,which greatly extends its application in the fields of functional materials deposition and device fabrication.In this Account,recent progress in the precise droplet manipulation based on heterogeneous wettability is summarized.First,the principle of droplet control by a heterogeneous surface and the development of the green printing technique based on this principle are introduced.Then the droplet manipulation,categorized as droplet patterning,droplet isolation,and droplet dynamics,is described.Meanwhile,related applications,such as high-capacity information coding,highly sensitive detection,and high-performance optic/electric device fabrication,are demonstrated.In addition,the general principle for controlling the droplet impact using heterogeneous wettability substrates is highlighted.Finally,a brief summary of this Account,with challenges and opportunities in this field,is proposed.Huizeng Li An Li Zhipeng Zhao Luanluan Xue Mingzhu Li Yanlin Song 2021Accounts of Materials Research2021,2,4:1
16The preparation of silybin–phospholipid complex and the study on its pharmacokinetics in rats显示文摘Xiao Yanyu Song Yunmei Chen Zhipeng Ping Qineng 2005International Journal of Pharmaceutics2005,,1:1
17Regulating droplet impact symmetry by surface engineering显示文摘Droplet impact on solid surfaces is essential both in nature and industry.Precisely regulating the dynamic behavior of droplet impact is of great significance for energy harvesting,anti-icing,inkjet printing,pesticide spraying,and many other fields.Various rebounding behaviors(deposition,rebounding,rotation,instability control,and so on)and rebounding intrinsic parameters(such as contact time)after droplets impacting on solid surfaces can be regulated by surface engineering.This paper reviews the advances in regulating droplet impact behavior from the perspective of symmetry by modifying solid surfaces from the following aspects:chemical modification and physical structure regulation,in which the symmetry is discussed from mirror symmetry and rotational symmetry.Firstly,the symmetry of the droplet impact dynamics and its influencing factors are introduced.Then the modulation of droplet impact symmetry,using homogeneous and heterogeneous chemically modified solid surfaces,is summarized.The following presents the influence of physical structures,from micro to macro scale compared to the droplet size,on the droplet impact symmetry.Finally,the future challenges and opportunities of the droplet impact behavior regulation are discussed。Zhipeng Zhao Huizeng Li Quan Liu An Li Luanluan Xue Renxuan Yuan Xinye Yu Rujun Li Xiao Deng Yanlin Song 2023Droplet2023,2,2:1
18Effects of irrigation level and method on soil salt balance and crop water use efficiency in arid oasis regions显示文摘Fresh water resource scarcity and soil salt accumulation in the root-zone are two key limiting factors for sustainable agricultural development in the oasis region of arid inland basin, northwest China. The aim of this study was to explore an appropriate irrigation scheme to maintain sustainable crop cultivation in this region. The effects of four irrigation levels (full irrigation, mild deficit, moderate deficit, and severe deficit) and three irrigation methods (border, surface drip and subsurface drip) on soil water and salt dynamics, highland barley (Hordeum vulgare L.) yield, and crop water use efficiency were studied by field plot experiments. The results showed that soil salt in 0-100 cm profile was accumulated under all experimental treatments after one season of highland barley planting, but the accumulated salt mass decreased with the decrease of the lower limit of irrigation. Salt mass in 0-100 cm soil profile under subsurface drip irrigation was 16.8%-57.8% and 2.9%-58.4% less than that under border and surface drip irrigation, respectively. The grain yield of highland barley decreased first and then increased with the decrease of the lower limit of irrigation under surface drip and subsurface drip irrigation, but it was on the contrary under border irrigation. Mean grain yield for all irrigation levels under subsurface drip irrigation was 5.7% and 18.8% higher than that under border and surface drip irrigation, respectively. Water use efficiency increased with the decrease of the lower limit of irrigation, and the averaged water use efficiency of all irrigation levels under subsurface drip irrigation was 11.9% and 14.2% higher than that under border and surface drip irrigation, respectively. Considering economic benefit and irrigation water requirement, subsurface drip irrigation with the lower limit of irrigation of 50%-55% field capacity is suggested for highland barley planting in the arid oasis region.Liping Tang Xueshuang Shi Zhipeng Song Han Zhao Fahu Li 2023International Journal of Agricultural and Biological Engineering2023,16,6:0
19Effects of ambient humidity and thermal aging on properties of Nomex insulation in mining dry‐type transformer显示文摘Temperature and humidity are the main factors that cause the decomposition of Nomex paper widely used as turn‐to‐turn insulation material of mining dry‐type transformers. In this study, for understanding the effect of ambient humidity and thermal aging on the properties of Nomex paper, specimens with the initial moisture content of 7% were aged in the oven for 168, 504, 672 h at 180°C, respectively. After thermal aging, corona discharge experiments of unaged and aged specimens with different aging degrees were carried out at different relative humidity (RH) levels from 10 to 70%. The characteristic parameters of corona discharge, such as the average discharge amplitude and the number of discharges, were measured. Then, the surface conductivity and the surface potential decay rate were measured. The morphology and attenuated total internal reflectance Fourier transform infrared spectroscopy were also analysed for explaining the difference of properties be-tween unaged and aged specimens. The experiment results indicate that the average discharge amplitude decreases with the increase of RH or the deepening of the aging degree of specimens, but the number of discharges shows the reversal tendency. The changes in the physical structure and chemical composition, which is induced by the hydrolysis reaction of Nomex paper, accelerate the surface potential decay and increase the surface conductivity.Lu Li Jiancheng Song Zhipeng Lei Ailiang Kang Zhengyu Wang Rujia Men Yun Ma 2021High Voltage2021,6,1:0
20Continuous Detection of pH-responsive Drug Delivery System in Cells in situ by Confocal Laser Scanning Microscopy显示文摘Mesoporous 硅石 nanoparticles (MSN ) chitosan-poly 由 pH 应答的聚合物是涂的(甲基丙烯酸)(CS-PMAA ) 。这个 nano 药交货系统证明好应用程序前景和聚合物涂的 microspheres 在生物医学的地里正在答应地点特定的 anticancer 药交货搬运人。在在 situ 的房间的 pH 应答的药交货系统的连续察觉,利用 MSN/CS-PMAA 合成 microspheres,被建议。二种不同房间线,肿瘤房间线(Hela ) 和正常体的房间(293T ) ,被用来调查这药的行为在房间的装载系统。结论能被得出从荧光灯图象由扫描显微镜学( CLSM )的共焦的激光获得了,修改装载药的 microspheres ( MSN/CS-PMAA )更容易被摄取进房间,由 HeLa/293T 房间的 DOX@FITC-MSN/CS-PMAA 的举起在 pH 7.4/pH 被执行 6.8 ,纪录影片在摄取过程期间被释放,因为流出运输,荧光紧张与时间减少了并且漂白相片。由流动 cytometry 的 Fluoresence 察觉作为比较被执行。连续荧光灯在 situ 的观察能广泛地在房间在药交货系统的 pH 应答的释放进程被使用。Yang Sun Zhipeng Ran Hongyan Tang Yong Li Wenshuang Song Qingguang Ren Wuli Yang Jilie Kong 2013Chinese Journal of Chemistry2013,31,6:0
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费