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3D Printing of Periodic Porous Metamaterials for Tunable Electromagnetic Shielding Across Broad Frequencies

Nano-Micro Letters 2024年第12期16卷 533-552页

作者： Qinniu Lv Zilin Peng Haoran Pei Xinxing zhang Yinghong Chen huarong zhang Xu Zhu Shulong Wu State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversityNo.24 South Section 1Yihuan RoadChengdu 610065People’s Republic of China Baosheng Technology Innovation Corporation Limited No.1Suzhong RoadBaoying CountyYangzhou 225800People’s Republic of China

The new-generation electronic components require a balance between electromagnetic interference shielding efficiency and open structure factors such as ventilation and heat *** addition,realizing the tunable shielding of porous shields over a wide range of wavelengths is even more *** this study,the well-prepared thermoplastic polyurethane/carbon nanotubes composites were used to fabricate the novel periodic porous flexible metamaterials using fused deposition modeling 3D ***,the investigation focuses on optimization of pore geometry,size,dislocation configuration and material thickness,thus establishing a clear correlation between structural parameters and shielding *** experimental and simulation results have validated the superior shielding performance of hexagon derived honeycomb structure over other designs,and proposed the failure shielding size(D_(f)≈λ/8-λ/5)and critical inclined angle(θf≈43°-48°),which could be used as new benchmarks for tunable electromagnetic *** addition,the proper regulation of the material thickness could remarkably enhance the maximum shielding capability(85-95 dB)and absorption coefficient A(over 0.83).The final innovative design of the porous shielding box also exhibits good shielding effectiveness across a broad frequency range(over 2.4 GHz),opening up novel pathways for individualized and diversified shielding solutions.

关键词： Polymeric component 3D printing Tunable electromagnetic shielding Periodic porous metamaterials Honeycomb pore structure

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Boosting photocatalytic activity through tuning electron spin states and external magnetic fields

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Journal of Materials Science & Technology 2022年第20期115卷 208-220页

作者： Chengxiao Peng Wenjuan Fan Qian Li Wenna Han Xuefeng Chen Guangbiao zhang Yuli Yan Qinfen Gu Chao Wang huarong zhang Peiyu zhang Institute for Computational Materials Science School of Physics and ElectronicsHenan UniversityKaifeng 475004China International Joint Research Laboratory of New Energy Materials and Devices of Henan Province Kaifeng 475004China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China State Key Laboratory of Advanced Special Steels Shanghai Key Laboratory of Advanced FerrometallurgySchool of Materials Science and EngineeringShanghai UniversityShanghai 200444China Australian Synchrotron ANSTO800 Blackburn RdClayton3168VICAustralia

Photocatalysis is considered as one of the most promising technologies to generate renewable energy and degrade environmental *** efforts have been made to improve photocatalytic *** these,tuning spin polarization and introducing an external magnetic field are considered two promising strategies to boost photocatalytic *** this review highlights the recent breakthroughs through manipulating spin states and applying external magnetic fields for enhancing photocatalytic *** relevant characterization techniques and fundamental mechanisms are *** polarization states of photocatalysts have received considerable attention due to their unique roles,including inhibiting the recombination of photoexcited carriers owing to spin orientation constraint,enhancing the reaction product selectivity,and reducing the reaction barriers via optimizing the absorption energy and binding *** for the effects of external magnetic field on photocatalytic performance,we mainly discuss the separation enhancement of photoinduced carriers under static and time-varying magnetic fields and the magneto-hydrodynamic effect of charged ***,the negative magnetoresistance effect is discussed due to the synergistic effects of the electron spin state and an external magnetic *** discussions in this review may provide new insights into designing new semiconductors for boosting photocatalytic performance in internal and external magnetic fields.

关键词： Spin states External magnetic field Light adsorption Charges separation Reaction barrier

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The Toxic Mechanism of High Lethality of Herbicide Butachlor in Marine Flatfish Flounder,Paralichthys olivaceus

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Journal of Ocean University of China 2010年第3期9卷 257-264页

作者： GUO huarong YIN Licheng zhang Shicui FENG Wenrong Department of Marine Biology and Key Laboratory of Marine Genetics and Breeding Ministry of Education Ocean University of China Qingdao 266003 P. R. China

The toxic mechanism of herbicide butachlor to induce extremely high lethality in marine flatfish flounder, Paralichthys Olivaceus, was analyzed by histopathological examination, antioxidant enzymes activities and ATP content assay. Histopathological examination of gill, liver and kidney of exposed fishes showed that gill was a target organ of butachlor. The butachlor seriously impaired the respiration of gills by a series of lesions such as edema, lifting and detachment of lamellar epithelium, breakdown of pillar cells, and blood congestion. The dysfunction of gill respiration caused suffocation to the exposed flounder with extremely high acute lethality. Antioxidant enzyme activity assay of the in vitro cultured flounder gill （FG） ceils exposed to butachlor indicated that butachlor markedly inhibited the antioxidant enzyme activities of Superoxide dismutase （SOD）, catalase （CAT） and glutathione peroxidase （GPX）. Furthermore, along with the decline of antioxidant enzyme activities, ATP content in the exposed FG cells decreased, too. This infers that the oxidative stress induced by butachlor can inhibit the production of cellular ATP. Similar decrease of ATP content was also observed in the exposed flounder gill tissues. Taken together, as in FG cells, butachlor possibly induced a short supply of ATP in pillar cells by inhibiting the antioxidant enzyme activities and then affecting the contractibility of the pillar cells, which in turn resulted in the blood congestion and suffocation of exposed flounder.

关键词： butachlor flounder herbicide toxicity

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Cloning, Expression and Characterization of Translationally Controlled Tumor Protein (TCTP) Gene from Flatfish Turbot (Scophthalmus maximus)

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Journal of Ocean University of China 2008年第2期7卷 184-192页

作者： WANG Jian GUO huarong zhang Shicui YIN Licheng GUO Bin WANG Shaojie College of Marine Life Sciences Ocean University of China Qingdao 266003 P. R. China

A full-length cDNA encoding translationally controlled tumor protein of marine flatfish turbot （Scophthalmus maximus）, SmTCTP, was isolated with rapid amplification of cDNA Ends （RACE）. SmTCTP consisted of a 5＇ untranslated region （UTR） of 84 bp, a 3＇ UTR of 451 bp and an open reading frame （ORF） of 513 bp, encoding a protein of 170 amino acid residues, which contained two signature sequences of TCTP family. The 5＇UTR of SmTCTP started with a 5＇-terminal oligopyrimidine tract （5＇-TOP）, a typical feature for translationally controlled mRNAs. The deduced amino acid sequence of SmTCTP was similar to the other known vertebrate TCTPs in a range of 58.8% to 64.1%. The length of fish TCTPs was diverse among species, e.g., TCTP of turbot and sea perch （Lateolabraxjaponicus） is 170 aa in length, while that of zebrafish （Danio rerio） and rohu （Labeo rohita） is 171 aa in length. Northern blot analysis revealed that SmTCTP has only one type of mRNA. Its expression level in albino skin was slightly higher than that in normal skin. We constructed the pET3Oa-SmTCTP expression plasmid. The recombinant protein of His-tag SmTCTP was over-expressed in E. coli, purified and identified with peptide mass fingerprinting. These results may pave the way of further investigation of the biological function of TCTP in fish.

关键词： translationally controlled tumor protein (TCTP) turbot RACE Northern blot expression peptide mass fingerprinting

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Factor analysis and subtyping significance of CTNNB1 gene mutation detection in adamantinomatous craniopharyngioma

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Genes & Diseases 2024年第6期11卷 69-72页

作者： huarong zhang Chaohu Wang Jun Fan Rongrong Guo Qianchao Zhu Jun Pan Junxiang Peng Zhiyong Wu Songtao Qi Yi Liu Department of Neurosurgery Institute of Brain DiseasesNanfang HospitalSouthern Medical UniversityGuangzhouGuangdong510515China The First School of Clinical Medicine Southern Medical UniversityGuangzhouGuangdong 510515China The Laboratory for Precision Neurosurgery Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China College of Traditional Chinese Medicine Southern Medical UniversityGuangzhouGuangdong 510515China

Craniopharyngioma(CP)is a rare,histologically benign tumor located in the sellar region which is defined as a grade I tumor by the World Health Organization(WHO)classification.1 There are mainly two different clinicopathological subtypes of CP,the adamantinomatous CP(ACP)and the papillary CP(PCP).1 Although both variations have distinct histomorphological characteristics,an accurate diagnosis might be difficult to make,especially in tiny and/or fragmented ***,there is a continuous scientific dispute about the occurrence of mixed forms and the cell of origin of these tumors.

关键词： classification diagnosis inoma

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Preoperative Assessment of Abdominal Adipose Tissue to Predict Microvascular Invasion in Small Hepatocellular Carcinoma

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Journal of Clinical and Translational Hepatology 2022年第2期10卷 184-189页

作者： Zongqian Wu Hong Lu Qiao Xie Jie Cheng Kuansheng Ma Xiaofei Hu Liang Tan huarong zhang Chen Liu Xiaoming Li Ping Cai Department of Radiology Southwest HospitalThird Military Medical University(Army Medical University)ChongqingChina Department of Hepatobiliary Southwest HospitalThird Military Medical University(Army Medical University)ChongqingChina Department of Neurosurgery Southwest HospitalThird Military Medical University(Army Military Medi-cal University)ChongqingChina Department of Electrical and Computer Engineering Faculty of Science and TechnologyUniversity of MacaoMacaoChina Institute of Pathology and Southwest Cancer Center Third Military Medical University(Army Military Medical University)ChongqingChina

Background and Aims:Microvascular invasion(MVI)affects recurrence after treatment of small hepatocellular carcinoma(sHCC)of≤3 cm in *** present study aimed to investigate whether abdominal subcutaneous adipose tissue(SAT),visceral adipose tissue(VAT),and intermuscular adipose tissue(IMAT)are associated with MVI in patients with ***:A total of 124 patients with pathologicallyconfirmed sHCC diagnosed on surgical resection at the First Hospital Affiliated to Army Military University were recruited and divided into two groups according to MVI classification criteria(i.e.,MVI-positive or MVI-negative).The SAT,VAT,and IMAT areas at the lumbar 3 vertebral level were imaged with abdominal computed tomography and measured using ImageJ *** association with MVI in sHCC was ***:Of the 124 patients with sHCC,67 were MVIpositive and 57 were *** analysis revealed a significant difference in the abdominal VAT and SAT between the MVI-positive and MVI-negative groups(p<0.05),with an area under the receiver operating characteristic curve of 0.76 and 0.65,***:The results of this study suggest that the areas of abdominal SAT and VAT are of significant clinical value because they can effectively predict the MVI status in patients with sHCC.

关键词： Hepatocellular carcinoma Subcutaneous adipose tissue Visceral adipose tissue Computed tomography

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Effect of Isolation of Hainan Island from the Mainland on the Genetic Variation of Podocarpus imbricatus

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Forestry Studies in China 2003年第3期5卷 6-9页

作者： Li Jingwen zhang huarong Li Junqing College of Resources and Environment Beijing Forestry UniversityBeijing 100083P.R.China

Random amplified polymorphic DNA (RAPD) markers were used to analyze genetic variation of Podocarpus imbricatus in Hainan Island and Mainland of China. Two populations of Dacrydium pierrei were used as comparison materials. Both Podocarpus imbricatus and Dacrydium pierrei showed a low level of genetic diversity. However, Podocarpus imbricatus showed higher genetic diversity and higher population differentiation than Dacrydium pierrei. The geographic range may affect the genetic diversity of Podocarpus imbricatus and Dacrydium pierrei significantly. The UPGMA cluster tree showed that populations of Podocarpus imbricatus in Hainan Island and Guangxi Zhuang Autonomous Region were closer than those in Yunnan Province, indicating possible gene flow between Hainan Island and Guangxi Zhuang Autonomous Region. The young geological history of Hainan Island and the three times of unification and separation between Hainan Island and the Mainland may give the two species more possibilities of gene flow.

关键词： Hainan Island Mainland isolation genetic diversity RAPD Podocarpus imbricatus Dacrydium pierrei

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Cloning and sequencing of the full length cDNA encoding the catalytic beta subunit of protein phosphatase 1 from the skin tissue of flatfish turbot Scophthalmus maximus by RACE technique

Cloning and sequencing of the full length cDNA encoding the ...

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中国海洋学会海洋生物工程2005年学术年会

作者： Fei Qi, huarong Guo Shicui zhang Ocean university of China, Qingdao, 266003

Reversible protein phosphorylation is an important and versatile mechanism by which cells transduce external signals into biological responses. Cellular levels of protein phosphorylation are determine

关键词： Scophthalmus maximus protein phosphatasesl RACE

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贸易与个体人力资本投资:研究综述及展望

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北京工商大学学报（社会科学版） 2018年第6期33卷 63-73页

作者：潘莹张华容中南财经政法大学工商管理学院湖北武汉430073

劳动经济学与国际贸易理论的交叉已成为国际贸易前沿研究领域。自新贸易理论创建以来,人力资本对经济以及贸易发展的重要作用受到广泛关注,考察人力资本驱动因素对一国经济增长的重要性也日渐凸显。经济由封闭转向开放过程中,贸易通过... 详细信息

劳动经济学与国际贸易理论的交叉已成为国际贸易前沿研究领域。自新贸易理论创建以来,人力资本对经济以及贸易发展的重要作用受到广泛关注,考察人力资本驱动因素对一国经济增长的重要性也日渐凸显。经济由封闭转向开放过程中,贸易通过本地劳动力市场就业、技能溢价等多种渠道,影响个体人力资本投资的预期收益与机会成本,并最终作用于个体人力资本投资决策。系统梳理了理论文献中内生人力资本嵌入国际贸易分析框架,强调了个人能力在理论建模中的重要作用;从直接效应和间接效应两方面出发,归纳总结了经验研究中贸易影响个体人力资本投资的多种渠道。在评述文献的基础上,结合中国发展实践提出了未来可能的研究方向。

关键词：贸易人力资本投资教育个体能力技能溢价企业异质性

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非均匀展宽体系Maxwell-Bloch方程的求解及应用

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中山大学学报（自然科学版） 2009年第4期48卷 36-41页

作者：李成张华荣余向阳中山大学光电材料与技术国家重点实验室广东广州510275

建立了高精度快速求解非均匀展宽二能级体系Maxwell-Bloch(MB)耦合方程的数值算法。通过与特定条件下MB方程解析解及面积定理的比较,表明算法具有良好的收敛性和稳定性。作为示例,应用所建立的数值算法求解了一般条件下的MB方程,由计算... 详细信息

建立了高精度快速求解非均匀展宽二能级体系Maxwell-Bloch(MB)耦合方程的数值算法。通过与特定条件下MB方程解析解及面积定理的比较,表明算法具有良好的收敛性和稳定性。作为示例,应用所建立的数值算法求解了一般条件下的MB方程,由计算结果分析了失谐量、弛豫时间以及非均匀展宽线宽对光脉冲在介质中传播的影响。该数值算法为进一步研究光与物质相互作用的物理过程提供了一个很好的工具,对MB方程以及修正的这类偏微分方程组具有普适性。

关键词： Maxwell-Bloch方程非均匀展宽二能级体系偏微分方程数值解法面积定理

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