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Construction of ZnO/Ni@C hollow microspheres as efficient electromagnetic wave absorbers with thin thickness and broad bandwidth

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Journal of Materials Science & Technology 2024年第21期188卷 62-72页

作者： Yuchen Jiang Hao Zhang Xueqing Zuo Chen Sun Yifeng Zhang Hui Huang zeng fan Chengwei Li Lujun Pan School of Physics Dalian University of TechnologyDalian 116024China

Ingenious microstructure design and rational composition collocation have been proved to be an effective strategy for developing efficient electromagnetic wave(EMW)*** would be promising to fabricate a hollow structured composite integrating multiple loss mechanisms(conduction,magnetic,and polarization losses)for excellent EMW ***,a novel dielectric-magnetic compound of ZnO/Ni@C hollow microsphere was prepared through hydrothermal reactions followed by an in-situ chemical vapor deposition(CVD).In this ternary composite,abundant ZnO/Ni heterostructures formed the hollow microsphere skeletons and provided unique Schottky junctions,which endowed the composite with improved impedance matching and strong polarization ***,the amorphouspolycrystalline carbon layer deposited on the surface of each microsphere enhanced the conduction and interfacial polarization *** addition,the magnetic Ni nanoparticles induced magnetic *** from the synergistic effect of the hollow structure and multiple loss mechanisms,the ternary composite exhibits an effective absorption bandwidth as wide as 6.55 GHz at a thickness of only 1.85 mm,accompanied by a minimum reflection loss of–39.8 ***,the radar cross-section and the electromagnetic field simulation further verify the superior EMW absorption performance of the *** work provides a new reference for the fabrication of dielectric-magnetic ternary hollow microspheres as EMW absorbers with thin thickness and broad bandwidth.

关键词： Hollow Multiple loss mechanisms Thin thickness Broad bandwidth Electromagnetic wave absorption

Performance of Sm_(0.7)Sr_(0.3)CoO_(3-δ) dmembrane under CO_2-containing atmosphere

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Rare Metals 2016年第9期35卷 723-728页

作者： Yu-Wen Zhang fan-Lin zeng Chen-Chen Yu Cheng-Zhang Wu Wei-Zhong Ding Xiong-Gang Lu Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai University

The permeability and stability of Sm_（0.7）Sr_（0.3）CoO_（3-δ）（SSCO） regarding the special requirements for carbon capture and storage（CCS） application were *** CO_ was used as the sweep gas at 900 °C,leading to that the oxygen permeation flux decreases by about 34 %.Several cycles of changing the sweep gas between helium and CO_2 indicate the good reversibility of this *** carbonate formation and adsorption of CO_2 on the membrane surface are responsible for the degradation of the membrane *** better CO_2 resistance results from the substitution of Sm for Sr due to the higher acidity of Sm_2O_3（1.278） than that of Sr O（0.978） and a discontinuous layer of carbonate.

关键词： Sm0.7Sr0.3CoO3-δ Oxygen permeation CO2 Carbonate Perovskite

Antiviral treatment of hepatitis B virus-transgenic mice by a marine organism, Styela plicata

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World Journal of Gastroenterology 2006年第25期12卷 4038-4043页

作者： Rui Wang Zhen-Lan Du Wen-Jun Duan Xin Zhang fan-Lin zeng Xin-Xiang Wan Research Center for Pharmaceutics Southern Medical University Guangzhou 510315 Guangdong Province China Hematopoietic Stem Cell Transplantation 307 Hospital Academy of Military Medical Sciences Beijing 100039 China

AIM： To evaluate the antiviral effect of the effective ingredient of Styela plicata in a murine model of hepatitis B virus carrier. METHODS： HBV-transgenic mice were divided into 3 groups （control group, lamivudine treatment group and the effective ingredient of Styela plicata treatment group） and assigned to receive normal diet, lamivudine or the effective ingredient of Styela plicata for consecutive weeks. Serum hepatitis B surface antigen was detected by enzyme-linked immunosorbent assay （ELISA） method. Serum HBV DNA was detected by real-time polymerase chain reaction （RT-PCR）. Serum T helper （h） 1 cytokine interleukin （IL）-2 and Th2 cytokine IL-6 were detected by the quantitative sandwich enzyme immunoassay technique. Another group of HBV-transgenic mice was assigned to receive the effective ingredient of Styela plicata for consecutive weeks. The histology of liver tissue was evaluated before and after treatment. RESULTS： Twelve weeks after starting the therapy, serum hepatitis B surface antigen was significantly lowered in Styela plicata -treated mice and lamivudine-treated mice compared with the mice receiving normal diet （F12wk = 88.81, P12wk = 0.000 〈 0.01）. Serum HBV DNA was significantly lowered in Styela plicata -treated mice and lamivudine-treated mice compared with the mice receiving normal diet （F12wk = 20.71, P12wk = 0.000 〈 0.01）. However, like lamivudine, the effective ingredient of Styela plicata could not inhibit the replication of HBV completely. A rebound phenomenon of hepatitis B surface antigen and HBV DNA in sera could be found 4 wk after withdrawal of medication. Eight weeks after starting the therapy, serum levels before and after Styela plicata treatment of IL-2 were 2.41 ± 0.38 and 10.56 ± 0.78 ng/L, respectively （t8wk = -16.51, P8wk = 0.000 〈 0.01）. Compared with the serum levels of IL-2 in the normal diet-treated mice （2.48 ± 0.17 ng/L; t8wk = 13.23, P8wk = 0.000 〈 0.01）. Serum levels before and after Styela plicata treatment of IL-

关键词： Styela plicata Hepatitis B virus Transgenic mice RT-PCR Chronic hepatitis B

Growth of Carbon Nanocoils by Porous α-Fe2O3/SnO2 Catalyst and Its Buckypaper for High Efficient Adsorption

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Nano-Micro Letters 2020年第2期12卷 137-153页

作者： Yongpeng Zhao Jianzhen Wang Hui Huang Tianze Cong Shuaitao Yang Huan Chen Jiaqi Qin Muhammad Usman zeng fan Lujun Pan School of Physics Dalian University of TechnologyDalian 116024LiaoningPeople’s Republic of China School of Microelectronics Dalian University of TechnologyDalian 116024LiaoningPeople’s Republic of China State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116024LiaoningPeople’s Republic of China Department of Physics Khawaja Fareed University of Engineering and Information TechnologyRahim Yar Khan 64200Pakistan

High-purity(99%)carbon nanocoils(CNCs)have been synthesized by using porousα-Fe2O3/SnO2 *** yield of CNCs reaches 9,098%after a 6 h *** value is much higher than the previously reported data,indicating that this method is promising to synthesize high-purity CNCs on a large *** is considered that an appropriate proportion of Fe and Sn,proper particle size distribution,and a loose-porous aggregate structure of the catalyst are the key points to the high-purity growth of *** from the high-purity preparation,a CNC Buckypaper was successfully prepared and the electrical,mechanical,and electrochemical properties were investigated ***,as one of the practical applications,the CNC Buckypaper was successfully utilized as an efficient adsorbent for the removal of methylene blue dye from wastewater with an adsorption efficiency of 90.9%.This study provides a facile and economical route for preparing high-purity CNCs,which is suitable for large-quantity ***,the fabrication of macroscopic CNC Buckypaper provides promising alternative of adsorbent or other practical applications.

关键词： Carbon nanocoils Porousα-Fe2O3/SnO2 Catalyst Buckypaper Methylene blue adsorption

Preparation of Mg-Li alloys by electrolysis in molten salt at low temperature

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Chinese Chemical Letters 2007年第3期18卷 329-332页

作者： Mi Lin Zhang Yong De Yan Zhi Yao Hou Lu An fan zeng Chen Ding Xiang Tang College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 China

A new technology for preparation of low cost Mg-Li alloys was studied. The alloys were prepared by electrolysis in molten LiCl-KCl （weight ratio is 1：1） electrolyte with Mg rod severing as the consumed cathode. Main factors that affect current efficiency were investigated, and optimal electrolysis parameters were obtained. Mg-Li alloys with low lithium Content （about 25%） were prepared by the unique method of a higher post-thermal treatment temperature after electrolysis at low temperature. The results showed that the electrolysis can be carried out at low temperature, which resulted in reducing preparation cost due to energy saving. The new technology for the oreoaration of Mg-Li alloy by electrolysis in molten salt was laroved to be feasible.

关键词： Mg-Li alloys Molten salt electrolysis Low temperature Current efficiency

Recent advances in immunocastration in sheep and goat and its animal welfare benefits:A review

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Journal of Integrative Agriculture 2022年第2期21卷 299-309页

作者： zeng fan-mei DING Yi Teketay WASSIE JING Hai-jing Sohail AHMED LIU Gui-qiong JIANG Xun-ping Key Laboratory of Agricultural Animal Genetics Breeding and Reproduction of Ministry of EducationHuazhong Agricultural UniversityWuhan 430070P.R.China Laboratory of Sheep and Goat Genetics Breeding and ReproductionCollege of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan 430070P.R.China

Castration of male animals is a common practice in the meat industry aimed at reducing aggressive behavior, preventing unpleasant flavor, and controlling undesirable breeding. For many years, mechanical castration and surgical castration have been practiced to sterilize the animals. However, these castration methods are not humane because of the associated risk of death, pain, and stress. Recently, immunocastration targeting the hypothalamic-pituitary-gonadal axis(HPG) axis has been reported as an animal-friendly approach that circumvents many of the concerns with conventional castration, and suggested by researches as an alternative to surgical castration. However, there is no compilation of updated information on the use of immunocastration in sheep and goats. Therefore, this review aims to summarize the developmental process from traditional surgical castration to immunocastration and to screen the process of immune targets. It also compares the respective advantages and disadvantages of traditional castration technologies and immunocastration, in particular including analyses in the characteristics, features application and welfare benefits of immunocastration in sheep and goats were also analyzed.

关键词： immunocastration reversibility safety animal welfare DNA vaccine

Chinese Glioma Genome Atlas(CGGA):A Comprehensive Resource with Functional Genomic Data from Chinese Glioma Patients

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Genomics, Proteomics & Bioinformatics 2021年第1期19卷 1-12页

作者： Zheng Zhao Ke-Nan Zhang Qiangwei Wang Guanzhang Li fan zeng Ying Zhang fan Wu Ruichao Chai Zheng Wang Chuanbao Zhang Wei Zhang Zhaoshi Bao Tao Jiang Beijing Neurosurgical Institute Capital Medical UniversityBeijing 100070China Department of Neurosurgery The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009China Department of Neurosurgery Beijing Tiantan HospitalCapital Medical UniversityBeijing 100070China Center of Brain Tumor Beijing Institute for Brain DisordersBeijing 100069China China National Clinical Research Center for Neurological Diseases Beijing 100070China

Gliomas are the most common and malignant intracranial tumors in *** studies have revealed the significance of functional genomics for glioma pathophysiological studies and ***,access to comprehensive genomic data and analytical platforms is often ***,we developed the Chinese Glioma Genome Atlas(CGGA),a user-friendly data portal for the storage and interactive exploration of cross-omics data,including nearly 2000 primary and recurrent glioma samples from Chinese ***,open access is provided to whole-exome sequencing data(286 samples),mRNA sequencing(1018 samples)and microarray data(301 samples),DNA methylation microarray data(159 samples),and microRNA microarray data(198 samples),and to detailed clinical information(age,gender,chemoradiotherapy status,WHO grade,histological type,critical molecular pathological information,and survival data).In addition,we have developed several tools for users to analyze the mutation profiles,mRNA/microRNA expression,and DNA methylation profiles,and to perform survival and gene correlation analyses of specific glioma *** database removes the barriers for researchers,providing rapid and convenient access to high-quality functional genomic data resources for biological studies and clinical *** is available at http://***.

关键词： Glioma Functional genomics Chinese Glioma Genome Atlas Chinese cohort Database

Softening and Melting Behavior of Ferrous Burden under Simulated Oxygen Blast Furnace Condition

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Journal of Iron and Steel Research International 2015年第4期22卷 297-303页

作者： Hua-jie ZHANG Xue-feng SHE Yi-hua HAN Jing-song WANG fan-bo zeng Qing-guo XUE State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

The softening and melting behavior of sinter, pellet and mixed burden was researched through high tem- perature reaction tests under load simulating traditional blast furnace （T-BF） and oxygen blast furnace （OBF） condi- tions. The results indicated that compared with T-BF, the softening zone of sinter and pellet became wide, but the melting zone became narrow in OBF. The permeabilities of both sinter and pellet were improved in OBF. Under the condition of OBF, the temperature of softening zone of mixed burden was increased by 63 K, but the temperature of melting zone was decreased by 76 K. Therefore, the permeability of material layer was significantly improved. This was mainly caused by the change of the melting behavior of pellet. In addition, the quality Of dripping iron in OBF was much better than that of T-BF.

关键词： oxygen blast furnace softening zone melting zone ferrous burden

Alleviation of Chromium Toxicity by Silicon Addition in Rice Plants

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Agricultural Sciences in China 2011年第8期10卷 1188-1196页

作者： zeng fan-rong ZHAO Fu-sheng QIU Bo-yin OUYANG You-nan WU Fei-bo ZHANG Guo-ping Department of Agronomy College of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310029P.R.China College of Agronomy Guizhou UniversityGuiyang 550025P.R.China China National Rice Research Institute Fuyang 310041P.R.China

The alleviatory effect of silicon （Si） on chromium （Cr） toxicity to rice plants was investigated using a hydroponic experiment with two Cr levels （0 and 100μmol L-1）,three Si levels （0,1.25,and 2.5 mmol L-1） and two rice genotypes,differing in grain Cr accumulation （Dan K5,high accumulation and Xiushui 113,low accumulation）.The results showed that 100μmol L-1 Cr treatment caused a marked reduction of seedling height,dry biomass,soluble protein content,and root antioxidant enzyme activity,whereas significantly increased Cr concentration and TBARS （thiobarbituric acid reactive substances） ***,the reductions of seedling height,dry biomass,and soluble content were greatly alleviated due to Si addition to the culture *** with the plants treated with Cr alone,Si addition markedly reduced Cr uptake and translocation in rice *** significant differences were observed between the two Si treatments （1.25 and 2.5 mmol L-1） in shoot Cr concentration and Cr translocation *** the treatment of 100μmol L-1 Cr＋2.5 mmol L-1 Si,higher root Cr concentration but lower shoot Cr concentration and Cr translocation factor were observed in Dan K5 than those in Xiushui 113,indicating that the beneficial effect of Si on inhibiting Cr translocation was more pronounced in Dan K5 than in Xiushui *** addition also alleviated the reduction of antioxidative enzymes （superoxide dismutase （SOD） and ascorbate peroxidase （APX） in leaves;catalase （CAT） and APX in roots） and the increase of TBARS content in the Cr-stressed ***,the beneficial effects of Si on activities of antioxidative enzymes under Cr stress were *** highest activities of SOD,POD （guaiacol peroxidase）,CAT,and APX in leaves occurred in the treatment of 100μmol L-1 Cr＋2.5 mmol L-1 Si for Xiushui 113 and in the treatment of 100μmol L-1 Cr＋1.25 mmol L-1 Si for Dan *** beneficial effect of Si on alleviating oxidative stress was much more pronounced in Dan K5 than

关键词： antioxidant enzyme chromium lipid peroxidation Oryza sativa L. silicon translocation