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Yiping Wang,Yinong Pan,Yuan Wang 한국기상학회 2011 Asia-Pacific Journal of Atmospheric Sciences Vol.47 No.1
Based on the simulation displayed in Part I of this study,the intensification and maintenance, the relationship between deep moist mesoscale convective system (DMMCS) and instability, convective vorticity vector (CVV) are analyzed in the present paper. Results show that: (1) middle-low level convective instability is the precondition of the occurrence of DMMCS. The convergence and merger enhancement of convection cells, as well as the convective instability energy transporting from the left-front of typhoon play an essential role in the re-establishment and enhancement of convective instability. (2) Baroclinic instability and conditional symmetric instability appear not only in the middle-low level, but also are distinct in the middleupper level of DMMCS. (3) In DMMCS, there is an alternative distribution of inertial instability column and inertial stability column. In the west and south, there are negative CVV columns, which is favorable for the burst of deep moist convection. (4) The strong slantwise convection induced by inertial instability, baroclinic instability,and conditional symmetric instability enhance the upper-level southerly component. Due to the appearance of the compensated downdraft at the low level of south side of DMMCS, the low level southerly intensified, and the enhancement of upper- and low-level cores is in favor of the development of DMMCS, which will be beneficial to the reinforcement and maintenance of inertial instability,baroclinic instability, and conditional symmetric instability. It is a positive feedback process. (5) There is a downshear circulation to the east of rainfall cell. Shallow convections near this cell absorb the vapor and instability energy coming from the south. In the meanwhile, the mesoscale convergence line and meso-β-scale vortex organize and intensify convective cells. In DMMCS, there is an alternative distribution of convergence and divergence columns, and the couple between strong divergence and vorticity columns. They are both conducive to the development of DMMCS, and the instability will be intensified and maintained for its development in depth.
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Bonding Strength of Conductive Inner-Electrode Layers in Piezoelectric Multilayer Ceramics
Yiping Wang,Ying Yang,Bingjin Zheng,Jing Chen,Jinyi Yao,Yun Sheng 한국전기전자재료학회 2017 Transactions on Electrical and Electronic Material Vol.18 No.4
Multilayer ceramics in which piezoelectric layers of 0.90 Pb(Zr0.48Ti0.52)O3 -0.05 Pb(Mn1/3Sb2/3)O3 -0.05 Pb(Zn1/3Nb2/3)O3(0.90PZT-0.05PMS-0.05PZN) stack alternately with silver electrode layers were prepared by an advanced low-temperatureco-fired ceramic (LTCC) method. The electrical properties and bonding strength of the multilayers were associated with theinterface morphologies between the piezoelectric and silver-electrode layers. Usually, the inner silver electrodes are fabricatedby sintering silver paste in multi-layer stacks. To improve the interface bonding strength, piezoelectric powders of0.90PZT-0.05PMS-0.05PZN with an average particle size of 23 μm were added to silver paste to form a gradient interface. SEMobservation indicated clear interfaces in multilayer ceramics without powder addition. With the increase of piezoelectricpowder addition in the silver paste, gradient interfaces were successfully obtained. The multilayer ceramics with gradientinterfaces present greater bonding strength as well as excellent piezoelectric properties for 30~40 wt% of added powder. Onthe other hand, over addition greatly increased the resistance of the inner silver electrodes, leading to a piezoelectric behaviorlike that of bulk ceramics in multilayers.
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New Charipinae (Hymenoptera: Cynipoidea: Figitidae) records from China
Mar Ferrer-Suay,Jesús Selfa,YipingWang,Xue-xin Chen,Jun-Hua He,Juli Pujade-Villar 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.4
Charipinae material collected from different provinces of China has been studied. Twenty-one previously described species have been identified: Alloxysta arcuata, A. brevis, A. carinata, A. castanea, A. consobrina, A. fracticornis, A. leunisii, A. macrophadna, A. mullensis, A. obscurata, A. paretasmartinezi, A. pilipennis, A. pilosa, A. postica, A. sawoniewiczi, A. victrix, A. xanthopa, Dilyta subclavata, Phaenoglyphis chinensis, P. heterocera and P. villosa. All species, except for P. chinensis and P. villosa, are here recorded for the first time from China. Diagnosis, material studied and distribution are given for each species. Plateswith the diagnostic morphological features of each species are also included.
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Noel Mata-Casanova,Jesús Selfa,YipingWang,Xue-xin Chen,Juli Pujade-Villar 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.1
The poorly known Anacharitinae fauna fromChina is studied. Two species of genus Aegilips Haliday, 1835 (which only had one species previously recorded there) are recorded in China. The genera Anacharis Dalman, 1823 and Xyalaspis Hartig, 1843 are recorded for the first time with two and four species present respectively. A new species of Xyalaspis, X. ribesi sp. n., is described. Diagnostic characters of the new species are illustrated, and data about biology, distribution and morphological variability of the Chinese Anacharitinae are discussed.
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