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Preparation and application in electromagnetic absorption of ZnO/FeNiMo composite

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Rare Metals 2014年第5期33卷 573-577页

作者： Xia-lian zheng zheng-Hou Zhu Xiao-Min Li School of Materials Science and Engineering Nanchang University Physics Science and Engineering Technology Institute Yichun College

In order to increase the absorbing ability and expand the absorbing bandwidth, ZnO and FeNiMo particles were established as absorbers, and wax as adhesive, and the electromagnetic parameters were tested using a vector network analyzer, then the absorbing properties were calculated by means of transmission line theory. The ZnO/FeNiMo composite has excellent microwave absorption properties of a minimum reflection loss value-27.8 dB at 15.98 GHz for a thickness of 1.5 mm and a broad absorption bandwidth of 13.46–18 GHz（RL 〈-10 dB）.

关键词： ZnO FeNiMo Absorbing materials Absorbing property Reflection loss

The absorbing properties of Fe_(73.5) Cu_1 Nb_3Si_(13.5)B_9 amorphous powder/S-glass fiber-reinforced epoxy composite panels

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Rare Metals 2013年第3期32卷 294-298页

作者： Xia-lian zheng zheng-Hou Zhu Xiao-Min Li School of Materials Science and Engineering Nanchang University Physics Science and Engineering Technology Institute Yichun College

Fe73.5Cu1Nb3Si13.5B9 （or FeCuNbSiB） powder/ S-glass fiber-reinforced epoxy composite panels were pre- pared by mold pressing method. Metallographic analysis shows that the amorphous powders are evenly distributed between the layers of S-glass fibers. The effects of the Fe- CuNbSiB powder mass fraction on the complex permittivity, complex permeability, and microwave absorption of the composite panels have been studied in the frequency range of 2.6-18.0 GHz. The complex permittivity of the composite panels with different mass fractions of the FeCuNbSiB powders shows several peaks in the 2.6-18.0 GHz fre- quency range. The complex permeability of the composites decreases with the increasing frequency in the frequency range of 8-18 GHz. The composite with FeCuNbSiB/epoxy mass ratio of 2.5：1.0 has excellent microwave absorption properties of a minimum reflection loss value -30.5 dB at 10.93 GHz for a thickness of 2 mm. A reflection loss exceeding -10 dB can be obtained in a broad frequency range of 3.2-18.0 GHz with a thickness of 1.15-5.00 mm. For the FeCuNbSiB composites, the magnetic loss is the dominant term for microwave absorption. The FeCuNbSiB powders are a possible candidate for high-performance microwave absorption filler.

关键词： Amorphous powders Composites Permeability Permittivity Absorbing properties

Merger of Ezetimibe and Statin:a Potential Dual Inhibitor

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Chemical Research in Chinese Universities 2011年第2期27卷 232-236页

作者： HE Xing-lian XU Xian-xiu zheng lian-you BAI Xu Center for Combinatorial Chemistry and Drug Discovery School of Pharmaceutical Sciences Jilin University Changchun 130021 P R. China College of Chemistry Jilin University Changchun 130012 P R. China College of Chemistry Northeast Normal University Changchun 130024 P R. China

A potential dual inhibitor（4） for exogenous absorption and endogenic synthesis of cholesterol was designed based on the conjugation of the β-lactam pharmacophore of ezetimibe and the δ-lactone pharmacophore of statins. The merger of ezetimibe and statin 4 was synthesized from p-hydroxybenzaldehyde through a ten-step route. 1H NMR analysis showed existence of four pairs of enantiomers（5.7：5.7：1：1, molar ratio）. And compound 4 was found to lower total glucose（TG） level in rat serum via a high-cholesterol and high-fat feeding experiment.

关键词： Multi-target drug Ezetimibe Statin

Classification of musical hallucinations and the characters along with neural-molecular mechanisms of musical hallucinations associated with psychiatric disorders

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World Journal of Psychiatry 2024年第9期14卷 1386-1396页

作者： Xin lian Wei Song Tian-Mei Si Naomi zheng lian Department of Radiology and Biomedical Imaging Shanxi Bethune HospitalShanxi Academy of Medical SciencesTaiyuan 030032Shanxi ProvinceChina Department of Psychiatry and Behavioral Neurosciences McMaster UniversityHamilton L8S 4L8ONCanada Department of Psychopharmacology Peking University Sixth HospitalBeijing 100191China Department of Psychiatry Hartford HealthCareSt Vincent’s Medical CenterWestportCT 06088United States

BACKGROUND Musical hallucinations(MH)involve the false perception of music in the absence of external stimuli which links with different *** pathomechanisms of MH encompass various *** etiological classification of MH is of particular importance and offers valuable insights to understand MH,and further to develop the effective treatment of *** the recent decades,more MH cases have been reported,revealing newly identified medical and psychiatric causes of *** imaging studies reveal that MH activates a wide array of brain *** up-to-date analysis on MH,especially on MH comorbid psychiatric conditions is *** To propose a new classification of MH;to study the age and gender differences of MH in mental disorders;and neuropathology of *** Literatures searches were conducted using keywords such as“music hallucination,”“music hallucination and mental illness,”“music hallucination and gender difference,”and“music hallucination and psychiatric disease”in the databases of PubMed,Google Scholar,and Web of *** cases were collected and categorized based on their *** t-test and ANOVA were employed(P<0.05)to compare the age differences of MH different etiological *** neuroimaging studies of neural networks regulating MH and their possible molecular mechanisms were *** Among the 357 yielded publications,294 MH cases were *** average age of MH cases was 67.9 years,with a predominance of females(66.8%females vs 33.2%males).MH was classified into eight groups based on their etiological *** analysis of MH cases indicates varying associations with psychiatric *** We carried out a more comprehensive review of MH *** the first time according to our knowledge,we demonstrated the psychiatric conditions linked and/or associated with MH from statistical,biological and molecular point of view.

关键词： Pathomechanism Etiological factors Classification Gender difference Neuropathway Psychotic musical hallucination and non-psychotic musical hallucination Neuropathway Biological and molecular mechanism

Synthesis of Novel 3-Aryl Isoindolinone Derivatives

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Chemical Research in Chinese Universities 2013年第3期29卷 487-494页

作者： HU Chen-ming zheng lian-you PEI Ya-zhong BAI Xu Center for Combinatorial Chemistry and Drug Discovery College of Chemistry and School of Pharmaceutical Sciences Jilin University Changchun 130021 P. R. China

A library of novel 3-aryl isoindolinone derivatives with aromatic amino acid derivative fragments was designed and synthesized. Two synthetic routes were employed to construct 3-aryl isoindolinone ring system for diff... 详细信息

关键词： Molecular library 3-Aryl isoindolinone Aromatic amino acid derivative

Expression Analysis Based on Face Regions in Real-world Conditions

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International Journal of Automation and computing 2020年第1期17卷 96-107页

作者： zheng lian Ya Li Jian-Hua Tao Jian Huang Ming-Yue Niu National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of Sciences(CAS)Beijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100190China CAS Center for Excellence in Brain Science and Intelligence Technology Institute of AutomationChinese Academy of SciencesBeijing 100190China

Facial emotion recognition is an essential and important aspect of the field of human-machine *** research on facial emotion recognition focuses on the laboratory ***,it faces many challenges in real-world conditions,i.e.,illumination changes,large pose variations and partial or full *** challenges lead to different face areas with different degrees of sharpness and *** by this fact,we focus on the authenticity of predictions generated by different*** example,if only the mouth areas are available and the emotion classifier predicts happiness,then there is a question of how to judge the authenticity of *** problem can be converted into the contribution of different face areas to different *** this paper,we divide the whole face into six areas:nose areas,mouth areas,eyes areas,nose to mouth areas,nose to eyes areas and mouth to eyes *** obtain more convincing results,our experiments are conducted on three different databases:facial expression recognition+(FER+),real-world affective faces database(RAF-DB)and expression in-the-wild(ExpW)*** analysis of the classification accuracy,the confusion matrix and the class activation map(CAM),we can establish convincing *** sum up,the contributions of this paper lie in two areas:1)We visualize concerned areas of human faces in emotion recognition;2)We analyze the contribution of different face areas to different emotions in real-world conditions through experimental *** findings can be combined with findings in psychology to promote the understanding of emotional expressions.

关键词： Facial emotion analysis face areas class activation map confusion matrix concerned area

Semi-supervised Ladder Networks for Speech Emotion Recognition

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International Journal of Automation and computing 2019年第4期16卷 437-448页

作者： Jian-Hua Tao Jian Huang Ya Li zheng lian Ming-Yue Niu National Laboratory of Pattern Recognition Beijing 100190 China School of Artificial Intelligence University of Chinese Academy of Science (CAS) Beijing 100190 China CAS Center for Excellence in Brain Science and Intelligence Technology Institute of Automation Chinese Academy of Sciences Beijing 100190 China

As a major component of speech signal processing, speech emotion recognition has become increasingly essential to understanding human communication. Benefitting from deep learning, many researchers have proposed various unsupervised models to extract effective emotional features and supervised models to train emotion recognition systems. In this paper, we utilize semi-supervised ladder networks for speech emotion recognition. The model is trained by minimizing the supervised loss and auxiliary unsupervised cost function. The addition of the unsupervised auxiliary task provides powerful discriminative representations of the input features, and is also regarded as the regularization of the emotional supervised task. We also compare the ladder network with other classical autoencoder structures. The experiments were conducted on the interactive emotional dyadic motion capture (IEMOCAP) database, and the results reveal that the proposed methods achieve superior performance with a small number of labelled data and achieves better performance than other methods.

关键词： Speech emotion recognition the ladder network semi-supervised learning autoencoder regularization

Identification of the Flavone in the Flower Bud of Panax Quinquefolium and Its Content Determination in the Different Parts

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Chemical Research in Chinese Universities 2001年第1期17卷 121-126页

作者： MENG Xiang-ying LI Xiang-gao TIAN Yi-xin LIU Yin-yan zheng lian-xiu College of Chinese Medical Material Jilin Agricultural UniversityChangchun 130118P.R.China The School of Basic Medical Sciences Norman Bethune University of Medical SciencesChangchun 130021P.R.China People Hospital of Jilin Province Changchun 130021P.R.China

Chemical constituents namely flavonoids in the flower buds of Panax quinque folium were identified and their content was determined in different parts. The content determination was performed using dual wavelength TLC-scan and ultraviolet absorption. Content determination results showed that the content of flavonoid in the flower bud was higher than in the roots.

关键词： Panax quinquefulium Flower buds Flavonoid Root Fruit

Effect of sintering temperature on the physical properties and electrical contact properties of doped AgSnO_2 contact materials

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International Journal of Minerals,Metallurgy and Materials 2018年第11期25卷 1275-1285页

作者： Hai-tao Wang Zi-xiang Wang lian-zheng Wang Jing-qin Wang Yan-cai Zhu State Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Electrical EngineeringHebei University of Technology Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province School of Electrical EngineeringHebei University of Technology

AgSnO_ 2 electrical contact materials doped with Bi_2O_3,La_2O_3,and TiO_2 were successfully fabricated by the powder metallurgy method under different initial sintering *** electrical conductivity,density,hardness,and contact resistance of the Ag Sn O_2/Bi_2O_3,AgSnO_2/La_2O_3,and AgSnO_2/Ti O_2 contact materials were measured and *** arc-eroded surface morphologies of the doped AgSnO_2 contact materials were investigated by scanning electron microscopy(SEM).The effects of the initial sintering temperature on the physical properties and electrical contact properties of the doped AgSnO_2 contact materials were *** results indicate that the physical properties can be improved and the contact resistance of the AgSnO_2 contact materials can be substantially reduced when the materials are sintered under their optimal initial sintering temperatures.

关键词： sintering temperature contact materials physical properties electrical contact properties