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A 32-channel 100 GHz wavelength division multiplexer by interleaving two silicon arrayed waveguide gratings

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Chinese Physics B 2021年第12期30卷 339-342页

作者： Changjian Xie Xihua zou Fang zou Lianshan Yan Wei Pan yong zhang Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China

A 32-channel wavelength division multiplexer with 100 GHz spacing is designed and fabricated by interleaving two silicon arrayed waveguide gratings(AWGs).It has a parallel structure consisting of two silicon 16-channel AWGs with200 GHz spacing and a Mach-Zehnder interferometer(MZI)with 200 GHz free spectral *** 16 channels of one silicon AWG are interleaved with those of the other AWG in spectrum,but with an identical spacing of 200 *** the composed wavelength division multiplexer,the experiment results reveal 32 wavelength channels in C-band,a wavelength spacing of 100 GHz,and a channel crosstalk lower than-15 dB.

关键词： wavelength division multiplexer arrayed waveguide grating silicon photonics Mach-Zehnder interferometer

Subsidence History of the Eastern Depression in the North Yellow Sea Basin

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Journal of China University of Mining and Technology 2007年第1期17卷 90-95页

作者： CAO Dai-yong WANG Xin-guo zhan Wen-feng LI Wen-yong State Key Laboratory of Coal Resources and Safe Mining China University of Mining ＆ Technology Beijing 100083 China Guangzhou Marine Survey Guangzhou Guangdong 510075 China

Using a back-stripping method, our paper simulated the subsidence history of the eastern depression in the North Yellow Sea Basin. The subsidence history curve pattern and the subsidence chorisogram during every subsiding period were exposed. Combining with the regional geologic background and the distribution features of the subsiding centers in every period, a contrasting study of the pattern and the classical subsidence history curves shows the subsi- dence history is made up of Mesozoic (J3-K1) and Cenozoic (E2-Q) subsiding cycles. The two subsiding cycles are separated by the late Cretaceous and Paleocene (K2-E1) uplift denudation. Both subsiding cycles have the characteristics of an extension basin. The rapid subsidence during the late Jurassic and Eocene is equivalent to the initial subsiding phases in both cycles.. The slow subsidence of both, the early Cretaceous and Neogene, can be regarded as thermal sub-sidence phases .

关键词： the eastern depression subsidence history extension basin back-stripping method

Calculation of the Nuclear Transition Charge Density in a Microscopic sdgIBM-1

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Chinese Physics Letters 2000年第9期17卷 646-648页

作者： zhanG zhan-Jun SANG Jian-ping LIU yong Department of Modern Physics University of Science and Technology of ChinaHefei 230027 Department of Physics Wuhan UniversityWuhan 430072 Institute of Particle Physics Huazhong Normal UniversityWuhan 430079

Formulae of proton and neutron boson structure functions(BSF's)are deduced in terms of a microscopic approach of sdgIBM(namely,microscopic sdgIBM).For the nucleus^(190)Os,the value of BSF's is worked *** to the high similarity,the maximum F-spin truncation is made under the full-symmetry ***,calculations of E2 and E4 transition charge densities(TCD's)are performed in the *** is found that the E2 and E4 TCD's can be reproduced quite satisfactorily in the uniform frame of microscopic sdgIBM-1.

关键词： sdgIBM Transition symmetry

Phase transition and charge transport through a triple dot device beyond the Kondo regime

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Chinese Physics B 2018年第10期27卷 628-634页

作者： yong-Chen Xiong zhan-Wu Zhu Ze-Dong He School of Science and Advanced Functional Material and Photoelectric Technology Research InstitutionHubei University of Automotive TechnologyShiyan 442002China

Semiconductor quantum dot structure provides a promising basis for quantum information processing, within which to reveal the quantum phase and charge transport is one of the most important issues. In this paper, by means of the numerical renormalization group technique, we study the quantum phase transition and the charge transport for a parallel triple dot device in the strongly correlated limit, focusing on the effect of inter-dot hopping t beyond the Kondo regime. We find the quantum behaviors depend closely on the initial electron number on the dots, and the present model may map to single,double, and side-coupled impurity models in different parameter spaces. An orbital spin-1/2 Kondo effect between the conduction leads and the bonding orbital, and several magnetic-frustration phases are demonstrated when t is adjusted to different regimes. To understand these phenomena, a canonical transformation of the energy levels is given, and important physical quantities with respect to increasing t and necessary theoretical discussions are shown.

关键词： semiconductor quantum dot device parallel triple dot structure quantum phase transition charge transport strongly correlated effect

MicroRNA-320a suppresses tumor progression by targeting PBX3 in gastric cancer and is downregulated by DNA methylation

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World Journal of Gastrointestinal Oncology 2019年第10期11卷 842-856页

作者： yong-Shuang Li Ying zou Dong-Qiu Dai Department of Gastrointestinal Surgery the Fourth Affiliated Hospital of China Medical University

BACKGROUND Ectopic expression of miRNAs promotes tumor development and ***(miR)-320a is downregulated in many cancers,including gastric cancer(GC).However,the mechanism underlying its downregulation and the role of miR-320a in GC are *** To determine expression and biological functions of miR-320a in GC and investigate the underlying molecular *** Quantitative real-time polymerase chain reaction(PCR)was used to determine expression of miR-320a in GC cell lines and ***7.1,miRDB,and *** were used to predict the possible targets of miR-320a,and a dual luciferase assay was used to confirm the *** blotting was used to detect the protein levels of pre-B-cell leukemia homeobox 3(PBX3)in GC cells and tissue *** Counting Kit-8 proliferation,Transwell,wound healing,and apoptosis assays were performed to analyze the biological functions of miR-320a in GC ***-specific PCR was used to analyze the methylation level of the miR-320a promoter CpG islands.5-Aza-2’-deoxycytidine(5-Aza-CdR)and trichostatin A(TSA)were used to treat GC *** miR-320a expression was lower in GC cell lines and tissues than in the normal gastric mucosa cell line GES-1 and matched adjacent normal ***-320a overexpression suppressed GC cell proliferation,invasion and migration,and induced ***3 was a target of miR-320a in *** methylation level of the miR-320a promoter CpG islands was elevated and this was partly reversed by 5-Aza-CdR and *** miR-320a acts as a tumor suppressor and inhibits malignant behavior of GC cells,partly by targeting *** methylation is an important mechanism associated with low expression of miR-320a.

关键词： Gastric cancer miRNA-320a DNA methylation Pre-B-cell leukemia homeobox 3 Tumor suppressor

Ciphertext-Policy Attribute-Based Encryption with Short Keys

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Chinese Journal of Electronics 2014年第4期23卷 655-660页

作者： XU Peng TANG yong JIANG Wenbin JIN Hai zou Deqing Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology

Ciphertext-policy attribute-based encryption(CP-ABE)allows a user with some attributes to decrypt the ciphertexts associated with these *** several CP-ABE schemes with the constant size ciphertext were proposed to reduce the communication cost,their master public and secret keys still have the size linear in the total number of *** schemes are unpractical for the attribute-scalable and many-attributes scenario.A new CP-ABE scheme is *** attribute is mapped to a mathematical value by a combination *** master public and secret keys of the proposed CP-ABE scheme have the size linear in the binary size of a hash function’s *** has the comparable performance with existing schemes in the aspects like the time costs of encryption and decryption,the expressiveness of access policy and the provable security.

关键词： Ciphertext-policy attribute-based encryption Expressiveness policy Provable security

Dynamic Stability Analysis of Wedge in Rock Slope Based on Kinetic Vector Method

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Journal of Earth Science 2014年第4期25卷 749-756页

作者： Weida Ni Huiming Tang Xiao Liu Rui yong Zongxing zou Faculty of Engineering China University of Geosciences Three Gorges Research Center for Geo-hazard Ministry of Education China University of Geosciences

A new method （kinetic vector method, KVM） is presented for analyzing the dynamic stability of wedge in rock slope. The dynamic analysis is carried out based on three dimensional distinct element code （3DEC）, and the kinetic inertial force of the wedge under seismic loading can be obtained via calculating the net vectorial nodal force of the finite difference grid. Then, the factor of safety （FOS） of the wedge can be calculated based on limit equilibrium method （LEM） at each dynamic analysis step, therefore time series of the FOS for whole earthquake process can be obtained. For the purpose of evaluating the entire dynamic stability of the wedge, dynamic factor of safety （DFOS） is proposed and defined as a numerical value corresponding with a given rate of probability guarantee based on reliability theory. Consequently, the KVM inherits the merits of the LEM and also has fully nonlinear dynamic analysis capabilities, and the feasibility and correctness of the KVM are tested by an example given by Hoek and Bray （1981）. Finally, a rock slope case in Wenchuan Earthquake regions of China is presented to verify the engineering practicability of the KVM, and the results matched the actual situation well.

关键词： dynamic stability limit equilibrium discrete element kinetic vector method rock slope Wenchuan Earthquake.

Coupling of a Regional Climate Model with a Crop Development Model and Evaluation of the Coupled Model across China

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Advances in Atmospheric Sciences 2019年第5期36卷 527-540页

作者： Jing zou Zhenghui XIE Chesheng zhan Feng CHEN Peihua QIN Tong HU Jinbo XIE Institute of Oceanographic Instrumentation Qilu University of Technology (Shandong Academy of Sciences) Institute of Atmospheric Physics Chinese Academy of Sciences Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Zhejiang Institute of Meteorological Sciences

In this study, the CERES(Crop Estimation through Resource and Environment Synthesis) crop model was coupled with CLM3.5, the land module of the regional climate model RegCM4. The new coupled model was named RegCM4_CERES; and in this model, crop type was further divided into winter wheat, spring wheat, spring maize, summer maize, early rice, late rice,single rice, and other crop types based on each distribution fraction. The development of each crop sub-type was simulated by the corresponding crop model separately, with each planting and harvesting date. A simulation test using RegCM4_CERES was conducted across China from 1999 to 2008; a control test was also performed using the original RegCM4. Data on crop LAI(leaf area index), soil moisture at 10 cm depth, precipitation, and 2 m air temperature were collected to evaluate the performance of RegCM4_CERES. The evaluation provided comparison of single-station time series, regional distributions,seasonal variations, and statistical indices for RegCM4_CERES. The results revealed that the coupled model had an excellent ability to simulate the phonological changes and spatial variations in crops. The consideration of dynamic crop development in RegCM4_CERES corrected the wet bias of the original RegCM4 over North China and the cold bias over South ***, the degree of improvement was minimal and the statistical indices for RegCM4_CERES were roughly the same as the original RegCM4.

关键词： model evaluation model coupling crop development model regional climate model climate modeling

Synthesis and Molecular Structure of 1,5-Diphenyl-3-phenacylthio-1H-1,2,4-triazole

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Chinese Journal of Structural Chemistry 2006年第8期25卷 1019-1023页

作者： LIU Tian-Bao JIANG Wen-Qing zou Jian-Ping zhanG yong Key Laboratory of Organic Synthesis of Jiangsu Province College ofChemistry and Chemical Engineering Suzhou University Jiangsu 215006 China Department of Chemistry Chizhou Teachers College Chizhou 247100 China

The title compound 1,5-diphenyl-3-phenacylthio-1H-1,2,4-triazole 2 （C22H17- N3OS, Mr = 371.45） was prepared by the reaction of 1-benzoyl-3-phenyl-aminothiourea 1 with 2-bromoacetophenone. The crystal is of triclinic, space group P^1-, a = 8.906（3）, b = 9.853（3）, c = 11.226（4）A, α= 100.562（5）, β= 101.285（5）, γ. = 105.096（6）^c, Z = 2, V = 903.7（5） ]A^3, Dc= 1.365 g/cm^3,μ（MoKa） = 0.196 mm^-1, F（000） = 388, the final R = 0.0506 and wR = 0.0985 for 2532 observed reflections （I〉 2σ（I））. Its formation mechanism was proposed.

关键词： triazole 1-benzoyl-3-phenylaminothiourea crystal structure