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Effect of Facet Displacement on Radiation Field and Its Application for Panel Adjustment of Large Reflector Antenna

Chinese Journal of Mechanical Engineering 2017年第3期30卷 578-586页

作者： wei WANG Peiyuan LIAN Shuxin ZHANG Binbin xiang Qian xu key laboratory of electronic equipment structure design of ministry of education xidian universityXi'an 710071China collaborative innovation center of information sensing and understanding xidian universityXi'an 710071China xinjiang astronomical observation chinese academy of sciencesUrumqi 830011China

Large reflector antennas are widely used in radars, satellite communication, radio astronomy, and so on. The rapid developments in these fields have created demands for development of better performance and higher surface accuracy. However, low accuracy and low effi- ciency are the common disadvantages for traditional panel alignment and adjustment. In order to improve the surface accuracy of large reflector antenna, a new method is pre- sented to determinate panel adjustment values from far field pattern. Based on the method of Physical Optics （PO）, the effect of panel facet displacement on radiation field value is derived. Then the linear system is constructed between panel adjustment vector and far field pattern. Using the method of Singular Value Decomposition （SVD）, the adjustment value for all panel adjustors are obtained by solving the linear equations. An experiment is conducted on a 3.7 m reflector antenna with 12 segmented panels. The results of simulation and test are similar, which shows that the presented method is feasible. Moreover, thediscussion about validation shows that the method can be used for many cases of reflector shape. The proposed research provides the instruction to adjust surface panels efficiently and accurately.

关键词： Reflector antennas Surface accuracy -Radiation field - Reflector antenna mechanical factors Electromechanical effects - Panel adjustment - Singularvalue decomposition (SVD)

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Degradation of simulated organic wastewater by advanced oxidation with oxidants generated from oxygen reduction

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Chinese Journal of Chemical Engineering 2019年第4期27卷 850-856页

作者： Yi Ouyang Qing xu Yang xiang wei Liu Junqi Du Beijing Key Laboratory of Membrane Science and Technology Beijing University of Chemical Technology Beijing 100029 China School of Chemical Engineering Beijing University of Chemical Technology Beijing 100029 China

The degradation capacity of advanced oxidants generated from oxygen reduction was investigated in model effluent containing chlorobenzene, aniline and benzene through the advanced oxidation processes(AOPs). Intermediate products of the degradation process were determined by GC–MS, and they contributed to specify the degradation pathways of monoaromatic compounds. The study particularly focused on the influence of the dosage of the oxidant, pH and the initial concentration of organic compounds on the degradation *** the dosage of oxidant was 4 wt% and the pH was 7, the maximum degradation rates of 74.83% chlorobenzene, 70.32% aniline and 37.69% benzene were achieved. Furthermore, microwave was applied to intensify the oxidation process under optimal operation conditions, and the degradation rates were increased to 87.85% chlorobenzene, 89.11% aniline and 39.03% benzene, respectively.

关键词： AOPs Degradation Advanced oxidants Monoaromatic compounds Microwave

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A new method to predict mechanical properties for microalloyed steels via industrial data and mechanism analysis

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Journal of Iron and Steel Research International 2019年第3期26卷 230-241页

作者： wei-gang Li wei Yang Yun-tao Zhao Guang xu xiang-hua Liu Engineering Research Center for Metallurgical Automation and Measurement Technology of Ministry of Education Wuhan University of Science and Technology Wuhan 430081Hubei China The State Key Laboratory of Refractories and Metallurgy Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of EducationWuhan University of Science and TechnologyWuhan 430081 HubeiChina Research Institute of Science and Technology Northeastern University Shenyang 110819 LiaoningChina

A new modeling method has been developed by combining industrial data and metallurgical *** method utilizes a series of models to predict the mechanical properties for microalloyed steels with high reliability and strong ***,the modeling process includes determining the influencing factors,cleaning the actual data,building sub-models for each single factor and for the interactions between the factors,verifying the reproducibility of the sub-models,and building the whole *** effects of alloying elements(such as C,Si,Nb,and V),precipitation processes of microalloying elements,and processing parameters(such as reheating temperature and coiling temperature)are quantitatively involved in the *** addition,the obtained models can quantitatively describe the effect of each factor on the mechanical properties,which is impossible by using traditional modeling methods.A practical modeling case is introduced,and the influencing mechanisms of the factors on the mechanical properties are *** results show that the prediction errors for the tensile strength and yield strength are 2.54%and 3.34%,respectively,which exhibits the advantages of high precision and strong adaptability of the model used to design and develop new steel grades,reduce the number of physical tests,and reduce the development cost of new products.

关键词： Additive model Mechanical property prediction Metallurgical mechanism Industrial data

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浅谈智能配电系统在通信综合楼中的应用

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通信电源技术 2003年第2期20卷 44-46页

作者：卢鸣清马建伟徐湘宁江苏省电信公司江苏南京213000

简单介绍了通信综合楼中的自控系统。

关键词：智能配电系统通信综合楼应用自控系统

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纤维增强复合材料表面防护涂层的研究进展

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涂料工业 2025年第1期55卷 82-88页

作者：陶旭陈旭邹向赵永林杨忠哈尔滨乐普实业有限公司哈尔滨150090 中车青岛四方机车车辆股份有限公司山东青岛266111 上海阿宝实业有限公司上海201408 吉利汽车集团有限公司浙江宁波315336

在纤维增强复合材料表面涂覆一层防护涂层,可赋予其优异的综合性能,提高其使用效率并延长服役寿命。文中首先介绍了纤维增强复合材料的分类、应用和发展方向,轻量、环保、智能化是未来的发展趋势。随后,讨论了纤维增强复合材料表面防护... 详细信息

在纤维增强复合材料表面涂覆一层防护涂层,可赋予其优异的综合性能,提高其使用效率并延长服役寿命。文中首先介绍了纤维增强复合材料的分类、应用和发展方向,轻量、环保、智能化是未来的发展趋势。随后,讨论了纤维增强复合材料表面防护涂层的分类,重点论述了其表面防护涂层的附着力增强策略和方法。进一步论述了交通运输、能源装备等领域中纤维增强复合材料表面防护涂层的开发策略和应用研究现状。最后,针对存在的问题进行总结与展望,明确表面防护涂层的水性化是大势所趋,且涂层的开发将紧密结合性能、成本及环保等指标。

关键词：玻璃纤维碳纤维复合材料涂层表面防护

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circT P63-N suppresses the proliferation and metastasis of nasopharyngeal carcinoma via engaging with HSP90AB1 to modulate the YAP1/Hippo signaling pathway

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Science China Life Sciences 2025年

作者： Dan Wang Sicheng Zuo Junshang Ge Hongke Qu Jie Wu Na Yi Lei Shi Yumin Wang Yongzhen Mo Chunmei Fan Yi He Pan Chen Ming Zhou Bo xiang wei Xiong Wenjia Guo Zhaoyang Zeng Can Guo NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Cancer Research Institute and School of Basic Medicine Sciences Central South University Furong Laboratory Cancer Research Institute Affiliated Cancer Hospital of Xinjiang Medical University Xinjiang Key Laboratory of Translational Biomedical Engineering

Circular RNAs(circRNAs) play pivotal roles in the development and progression of various diseases, including malignant tumors. However,the biological functions and the underlying mechanisms of many circRNAs remain elusive. In this study, we identified a novel circRNA,circTP63-N, generated through the splicing of exons 2–4 of the TP63 gene in nasopharyngeal carcinoma(NPC). circTP63-N was found to be downregulated in clinical samples of NPC. Both in vitro and in vivo experiments unequivocally demonstrated that circTP63-N inhibits the proliferation and metastasis of NPC cells. Further investigations revealed that circTP63-N interacted with the HSP90AB1 protein, leading to the recruitment of LATS/YAP1 proteins. This, in turn, induced phosphorylation and ubiquitination-dependent degradation of YAP1, resulting in reduced nuclear translocation of YAP1 and inhibition of the transcriptional activation of downstream oncogenic genes, including INHBA, MMP3, and CCNE2. Our findings highlight the identification of circTP63-N, a novel circRNA encoded by an important tumor-relevant gene TP63 and elucidate its molecular mechanism as a tumor suppressor in NPC. These insights offer novel potential molecular markers and therapeutic targets for the clinical diagnosis and treatment of NPC.

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Energy-Efficient Beamforming for Two-Tier Massive MIMO Downlink

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China Communications 2015年第10期12卷 64-75页

作者： xu Guozhen LIU An JIANG wei xiang Haige LUO Wu China Mobile Research Institute & The State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University Department of Electrical and Computer Engineering Hong Kong University of Science and Technology The State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University

Heterogeneous networks(HetNets)consisting of macro cells with very large antenna arrays and a secondary tier of small cells with a few antennas each can well tackle the contradiction of large coverage of the network and high data rate at the hot ***,it is not permissible to assign orthogonal pilot sequences for all the supported users due to the large ***,we propose a pilot reduction scheme based on the heterogeneous system configurations and the unique topology of this *** reusing of pilot sequences causes the presence of the contaminated channel state information(CSI) and results in receivers' Quality of Service(QoS) *** the contaminated CSI,we provide an energy-efficient beamforming based on minimizing the total power consumption while keeping the QoS constraints satisfied and restricting the QoS outage probability below a given *** applying the approach of Bernstein approximation and semi-definite relaxation,we transform the original intractable chance constrained program to a convex problem *** results show that the average power consumption of the proposed beamforming for our pilot reduction scheme is close to that of the perfect CSI *** our scheme will greatly compress the length of pilot sequence especially for those highly densified network with large number of small cells,it will be crucially helpful to put such two-tier massive multiple-input and multiple-output(MIMO) systems into practice.

关键词： massive MIMO small cell Het-Net energy efficiency

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Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-Lin Li Xin-Ran Song Qian-Qian Wan Yu-Ming Wang Han-Zhou Li wei-Quan xu Jia-Bao Liao wei-Bo Wen Jing Miao Huan-Tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

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钛酸酯催化合成3-乙酰氨基-N,N-二(β-烷酰氧乙基)苯胺

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天津理工学院学报 2003年第3期19卷 11-12,35页

作者：魏荣宝阮伟祥何旭斌天津理工学院龙盛集团染料基础研究室天津300191

用钛酸酯为催化剂,通过3 乙酰氨基 N,N 二 (β 羟乙基)苯胺与乙酸及丙酸的酯化反应,合成了3 乙酰氨基 N,N 二 (β 烷酰氧乙基)苯胺对影响反应的因素进行了讨论.用IR、NMR对结构进行了表征,酯的收率为98%以上.

关键词： 3-乙酰氨基-N,N-二-(β-烷酰氧乙基)苯胺钛酸酯催化剂酯化反应乙酸丙酸 3-乙酰氨基-N,N-二-(β-羟乙基)苯胺

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Variations of suction and suction stress of unsaturated loess due to changes in lignin content and sample preparation method

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Journal of Mountain Science 2021年第8期18卷 2168-2183页

作者： LIU wei WANG Qian LIN Gao-chao xu xiang-tian Institute of Transportation Inner Mongolia UniversityHohhot010070China Key Laboratory of Loess Earthquake Engineering China Earthquake Administration&Gansu Province Lanzhou730000China School of Civil and Environmental Engineering University of New South WalesSydneyNSW2052Australia

Unsaturated loess in natural sites loses stability as the overburden load continuously *** soil modifiers such as cement and fly ash affect the surrounding environment.A new type of material,i.e.,lignin,is environmentally friendly and able to increase the strength of ***,the engineering characteristics of the improved loess under unsaturated conditions are not yet *** this study,the soil-water characteristic curves(SWCCs)of lignin-improved loess samples were determined from 0 kPa to 700 kPa using a pressure plate instrument,and then,they were fitted using the van Genuchten(VG)model and the Fredlund and Xing(FX)*** addition,the effects of the lignin content and sample preparation methods on the SWCCs were investigated to determine the optimal lignin content and a suitable sample preparation method for loess *** the lignin content increases,the matric suction and residual water content of the improved loess *** suction stress increases with the increasing lignin contents of 1%–2%.At lignin contents of 3%–4%,the suction stress begins to decrease and the samples prepared using the slurry method has a lower suction stress than that prepared using the wet mixing *** air entry value(AEV)increases with increasing lignin *** addition,scanning electron microscopy(SEM)was used to investigate the microstructural *** was found that after the addition of lignin,the entrapment of the loess particles by the lignin fibers created some larger particles and smaller pore diameters,which in turn led to poor connectivity of the loess *** changes cause the matric suction of the modified loess to increase.

关键词： Loess treated with lignin Sampling method Soil-water characteristic curve(SWCC) Suction stress characteristic curve(SSCC) Scanning electron microscopy(SEM)

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