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China Communications 2021年第8期18卷 121-132页

作者： Yongle Wu Mengdan Kong zheng zhuang Weimin Wang School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

In this review,the advanced microwave devices based on the integrated passive device(IPD)technology are expounded and discussed in detail,involving the performance breakthroughs and circuit ***,the development trend of IPD-based multifunctional microwave circuits is predicted further by analyzing the current research hot *** paper discusses a distinctive research area for microwave circuits and mobile-terminal radio-frequency integrated chips.

关键词： chips integrated passive device(IPD) multifunctional microwave circuit

Hot deformation behavior of a heat-resistant alloy without γ′-phase

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Journal of Iron and Steel Research International 2020年第7期27卷 820-833页

作者： Chen Dong zheng-dong Liu zheng-zong Chen Zhen Liu Jia-zhuang zheng Xi-tao Wang Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing100083China Institute for Special Steels Central Iron and Steel Research InstituteBeijing100081China

The hot compression behavior of the nickel-based heat-resistant alloy C-HRA-2®was investigated by a Gleeble-1500 thermo-mechanical simulator with the deformation temperature range of 950-1150℃and the strain rate of 0.001-10 s^−*** constitutive equation of the alloy was established by using a hyperbolic sine function,and the peak stress followed a power law relationship with the Zener-Hollomon parameter(Z).The activation energy was about 446 kJ mol^−1 for the whole hot deformation domain in this *** optimum hot deformation condition was obtained in the temperature range of 1050-1150℃and the strain rate range of 0.005-0.1 s^−*** domains during the hot deformation would occur in the strain rate range of 0.1-10 s^−1 with inhomogeneous microstructure and high-density twins in the *** dominant nucleation mechanism of dynamic recrystallization(DRX)was continuous dynamic recrystallization with sub-grain rotation at high strain rate,while DRX at low strain rate was discontinuous dynamic recrystallization with original grain boundaries bulging.

关键词： Nickel-based alloy Dynamic recrystallization Hot compression Processing map

The Art of Power Dividing:A Review for State-of-the-Art Planar Power Dividers

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China Communications 2017年第5期14卷 1-16页

作者： Yongle Wu Lingxiao Jiao zheng zhuang Yuanan Liu School of Electronic Engineering Beijing Key Laboratory of Work Safety Intelligent MonitoringBeijing University of Posts and TelecommunicationsBeijing 100876China

In this paper,massive state-of-theart planar power dividers are presented and discussed. The innovations of these superiorly-performanced power dividers lie in the performance breakthrough,physical configurations and function integrations. Eventually,based on the trend presented,the future of the power dividers is predicted. This paper might have inspiration significance to illuminate the way for the development of power dividers.

关键词： power divider microwave circuit microwave passive component analog circuit

Effects of process parameters on the growth behavior and granule size distribution of iron ore mixtures in a novel high-shear granulator

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International Journal of Minerals,Metallurgy and Materials 2022年第12期29卷 2152-2161页

作者： Yang You Jiabao Guo Gang Li zhuang zheng Yong Li Xuewei Lü College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium–Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China

This work proposes a novel horizontal high-shear granulator for iron ore granulation before sintering *** granulation behavior such as growth process and structure of granules were firstly analyzed,followed by the effects of operation conditions such as water content,initial particle size distribution,and the concentrate *** results show that the granule size increased significantly with increasing the granulation time,and the structure of granule can be divided into three types:non-nuclei,single-nuclei,and *** promotes the coalescence and growth of particles,and a better granulation performance was obtained at the water content of 8.8wt%under the current raw material *** the nuclei particle ratio led to an increase in average size of granules and permeability of the granules bed,but a decrease in growth ***,with increasing of concentrate ratio,granulation performance such as granule size,bed permeability,and uniformity became worse.

关键词： horizontal high-shear granulation iron ore granule structure granulation performance size distribution

Investigation on the granulation behavior of iron ore fine in a horizontal high-shear granulator

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Particuology 2022年第9期20卷 57-64页

作者： Yang You Jiabao Guo Gang Li zhuang zheng Yong Li Yaowei Yu Xuewei Lv College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced FerrometallurgySchool of Materials Science and EngineeringShanghai UniversityShanghai 200444China State Key Laboratory of Mechanical Transmissions Chongqing UniversityChongqing 400044China

High-shear granulation is widely used in many particulate industries for its good capability to improve the size,strength and composition uniformity of powder *** work conducted an experimental study to investigate the granulation behavior of iron ore fine in a horizontal high-shear granulator,such as granules size distribution,granules growth rate,and permeability of the granules *** results show that the granule size and permeability of packed granules bed increase gradually with increasing the granulation time,and the growth of granules can be divided into three stages:the rapid growth stage,the slow growth stage and the relatively stable *** the higher rotational speed and larger number of impellers increase the kinetic energy and collision frequency of the particles,which causes the increase of average granule size,growth rate and permeability of granules packed *** the other hand,the shear damage effect of the impellers on the granules is also enhanced with the increase of rotational speed and impeller number,resulting in significant granule size segregation.

关键词： High shear granulation Iron ore Particle Size distribution

Probabilistic Teleportation of an Arbitrary Two-particle State

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Chinese Physics Letters 2001年第12期18卷 1543-1545页

作者： GU Yong-Jian zheng Yi-zhuang GUO Guang-Can Laboratory of Quantum Communication and Quantum Computation University of Science and Technology of ChinaHefei 230026 Department of Physics Weifang UniversityWeifang 261043 Department of Physics Whenzhou Teachers CollegeWenzhou 325027

A scheme for the teleportation of an arbitrary two-particle state via two non-maximally entangled particle pairsis proposed. We show that teleportation can be successfully realized with a certain probability if the receiveradopts an appropriate unitary-reduction strategy. A specific strategy is provided in detail The probability of successful teleportation is determined by the smaller coefficients of the two entangled pairs.

关键词： particle unitary arbitrary

Prognostic value of dynamic electroencephalogram in comatose patients with different diseased regions

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Neural Regeneration Research 2007年第7期2卷 421-424页

作者： Huapin Huang Chunhui Che An zheng Xiaoyun zhuang Fang Jiang Nan Liu Department of Neurology Union Hospital of Fujian Medical University Fuzhou 350001 Fujian Province China

BACKGROUND： It has proved that dynamic electroencephalogram （EEG） is definite in judging the outcome of ischemic hypoxic comatose patients, EEG is more sensitive to the cortical affection, but not sensitive to the subcortical and brainstem affections, thus it is necessary to clarify the indications of this technique in the clinical application.OBJECTIVE： To observe and compare the prognostic value of dynamic EEG and Glasgow coma score in comatose patients with different diseased region.DESIGN： A clinical case-controlled observation.SETTING： Union Hospital of Fujian Medical University.PARTICIPANTS： Sixty-eight comatose patients were selected from the Union Hospital affiliated to Fujian Medical University from June 1998 to January 2005. The diseased regions were identified using cranial CT （n =43） or MR （n =25）. According to different primarily diseased regions, the comatose patients were divided into two groups： ① brainstem affection group （n =23）： 13 males and 10 females, 14 - 62 years of age; ②diffuse cortical affection group （n =45）： 28 males and 17 females, 23 - 75 years of age.METHODS： The dynamic EEG and Glasgow coma score were examined in the 45 comatose patients with primarily cortical affection and 22 comatose patients with primarily brainstem affection at acute phase. The patients were followed-up for 3 months to observe the outcome, The termination of outcome judgment was 3 months after attack or the death. The clinical outcome was classified as complete rehabilitation, survived with disability, death or vegetative state. Correlations of dynamic EEG and Glasgow coma score with the outcome of patients were analyzed. The correlations of dynamic EEG grades and Glasgow coma scores with the outcome were analyzed, and the prognostic value of dynamic EEG grades was compared between the two groups.MAIN OUTCOME MEASURES： ① Correlations of dynamic EEG and Glasgow coma score with the outcome of patients; ② Comparison of the prognostic value of dynamic EEG

关键词： dynamic electroencephalogram brainstem infarction coma outcome cerebral cortex

Effects of SiC_(p) on microstructures of semi-solid extruded AZ91D magnesium alloys in recrystallization process

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China Foundry 2021年第6期18卷 565-573页

作者： Ao-xue Jiang Zhi-yong You zhuang-zheng Duan Gang-ping Qiao Jin-shan Zhang Ling-bing Guo College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Shanxi Huaxiang Group Co. Ltd.Linfen 041000ShanxiChina

AZ91 D and 8.5 vol.%SiC_(p)/AZ91 D magnesium matrix composites were fabricated by a semi-solid extruded processing method,and treated with solution and aging heat *** effects of SiC_(p)on the microstructures of the semi-solid extruded AZ91 D magnesium alloy during recrystallization were studied by observing and analyzing the microstructure evolution during extrusions and heat *** results show that the addition of SiC_(p)inhibits the dynamic recrystallization of AZ91 D during the semi-solid extrusion with only 26% of the volume fraction of ***,the addition of SiC_(p)refines the sizes of grains and second phases,and upgrades the volume fraction of second *** solution and aging treatment,the recrystallization continues,and the addition of SiC_(p)promotes the recrystallization and the recrystallized microstructure is much more ***,the sizes of grains and second phases continue to be refined,and the volume fraction of second phases continues to increase.

关键词： SiC_(p)/AZ91D composites semi-solid extrusion recrystallization microstructure

Effect of heat treatment on microstructure and properties of semi-solid squeeze casting AZ91D

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China Foundry 2020年第3期17卷 219-226页

作者： Zhi-yong You Ao-xue Jiang zhuang-zheng Duan Gang-ping Qiao Jing-lei Gao Ling-bing Guo College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Shanxi Huaxiang Group Co. Ltd.Linfen 011600China

Semi-solid AZ91D magnesium alloy billets were prepared by near-liquidus heat ***-solid squeeze casting was conducted at 575,585 and 595℃,respectively,with 1 mm·s^-1 squeeze *** semisolid squeeze casting AZ91D samples were heat treated by T4(solution at 415℃for 24 h)and T6(solution at 415℃for 24 h+220℃for 8 h)processes,*** microstructure and mechanical properties of the alloy in different states were investigated by means of OM,SEM and tensile testing *** results show that compared to as-cast alloy,the grain size of the semi-solid squeezed AZ91D decreased significantly,and with the increase of semi-solid squeeze temperature,the grain size of AZ91D *** grains of the alloy were refined by T4 treatment,and further refined by T6 treatment.T6 treatment greatly improved the tensile strength,elongation,and hardness,but did not significantly improve yield *** 575℃squeeze casting and T6 treatment,the ultimate tensile strength(UTS)reached 285 MPa,the elongation reached 13.36%,and the hardness also reached the maximum(106.8 HV),but the yield strength(YS)was only 180 *** the process of semi-solid squeeze casting and heat treatment,the matrix grain was refined and a large number of precipitated and secondary precipitated phases of Mg17Al12 *** the average size of matrix grain and secondary precipitated phase decreased,while the volume fraction of secondary precipitated phase *** these resulted in high tensile strength,elongation and hardness.

关键词： AZ91D semi-solid squeeze casting solution aging treatment microstructure mechanical properties

Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infi ltration System

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Journal of Integrative Agriculture 2014年第5期13卷 1113-1120页

作者： CHEN Pei-zhen CUI Jian-yu HU Lin zheng Miao-zhuang CHENG Shan-ping HUANG Jie-wen MU Kang-guo College of Resources and Environmental Sciences China Agricultural University National Energy R&D Center for Non-Food Biomass of China China Agricultural University

In order to enhance the nitrogen removal, a subsurface wastewater infiltration system （SWIS） was improved by adding peat in deep soil as carbon source for denitrification process. The effects of addition of carbon source in the underpart of the SWIS on nitrogen removal at different influents （with the total nitrogen （TN） concentration 40 and 80 mg L^-1, respectively） were investigated by soil column simulating experiments. When the relatively light pollution influent with 40 mg L^-1 TN was used, the average concentrations of NO3-N and TN in effluents were （4.69±0.235）, （6.18±0.079） mg L^-1, respectively, decreased by 32 and 30.8% than the control; the NO3--N concentration of all effluents was below the maximum contaminant level of 10 mg L^-1; as high as 92.67% of the TN removal efficiency was achieved. When relatively heavy pollution influent with 80 mg LITN was used, the average concentrations of NO3--N and TN in effluents were （10.2±0.265）, （12.5±0.148） mg L^-1 respectively, decreased by 20 and 21.2% than the control; the NO3--N concentration of all effluents met the grade Ⅲ of the national quality standard for ground water of China （GB/T 14848-1993） with the values less than 20 mg L^-1; the TN removal efficiency of 94.1% was achieved. In summary, adding peat in the underpart of the SWIS significantly decreased TN and NO3- -N concentration in effluents and the nitrogen removal efficiency improved significantly.

关键词： peat addition nitrogen removal efficiency denitrification subsurface wastewater infiltration system