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氟弹性体类加工助剂改性双向拉伸薄膜用PP

合成树脂及塑料 2020年第1期37卷 43-46页

作者：赵素芬涂志刚柳孟良潘斌中山火炬职业技术学院包装印刷系广东省中山市528436 广东理工职业学院广东省中山市528436

采用氟弹性体加工助剂母粒(简称母粒)对聚丙烯(PP)进行改性,考察了双向拉伸薄膜用PP(BOPP)的光学性能、力学性能和加工性能。结果表明:母粒对PP结晶度有一定影响,可提高结晶速率,且助剂质量分数为0.06%时对PP结晶度的影响最大;母粒会降... 详细信息

采用氟弹性体加工助剂母粒(简称母粒)对聚丙烯(PP)进行改性,考察了双向拉伸薄膜用PP(BOPP)的光学性能、力学性能和加工性能。结果表明:母粒对PP结晶度有一定影响,可提高结晶速率,且助剂质量分数为0.06%时对PP结晶度的影响最大;母粒会降低BOPP薄膜雾度,与只在BOPP薄膜的芯层加入母粒相比,在芯层和表层同时加入母粒,更易降低BOPP薄膜雾度;仅在BOPP薄膜芯层加入母粒,薄膜的光泽度更好;薄膜纵向的力学性能有所下降,但都能满足标准要求,母粒还能降低PP熔体表观黏度及剪切应力,改善加工性能。

关键词：聚丙烯双向拉伸薄膜氟弹性体加工母料光学性能结晶性流变性能

Ultrathin GaN Film Derived from Amorphous Ga_(2)O_(3) Film

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Journal of Wuhan University of Technology(Materials Science) 2024年第4期39卷 814-818页

作者：王鹏 ZHANG Binbin LIU Xiaofei ZHANG Xin tu Rong ZHANG Song 李宝文 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Materials for Architectures School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China

It remains a big challenge to synthesize two-dimensional(2D)GaN material for applications in power *** synthetic methods require complex equipment and processes and time ***,we reported a two-step route to prepare polycrystalline 2D GaN *** amorphous ultrathin Ga_(2)O_(3)film was first exfoliated from the surface of liquid *** a vapor phase reaction,2D Ga_(2)O_(3)film was then converted into 2D GaN film while maintaining the 2D *** and high-resolution transmission electron microscope(HRTEM)analysis implies the successful synthesis of wurtzite-type GaN ultrathin *** simple strategy proposed in this work will provide more opportunities for applications of GaN ultrathin film in many devices.

关键词： GaN Ga_(2)O_(3) liquid gallium

Fundamental Understanding on Selenium Electrochemistry:From Electrolytic Cell to Advanced Energy Storage

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Energy & Environmental Materials 2024年第3期7卷 236-256页

作者： Jiguo tu Cheng Chang Jingxiu Wang Haiping Lei R.Vasant Kumar Mingyong Wang Shuqiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Metallurgy University of CambridgeCambridge CB30FSUK

Selenium(Se),as an important quasi-metal element,has attracted much attention in the fields of thin-film solar cells,electrocatalysts and energy storage applications,due to its unique physical and chemical ***,the electrochemical behavior of Se in different systems from electrolytic cell to battery are complex and not fully *** this article,we focus on the electrochemical processes of Se in aqueous solutions,molten salts and ionic liquid electrolytes,as well as the application of Se-containing materials in energy ***,the electrochemical behaviors of Se-containing species in different systems are comprehensively summarized to understand the complexity of the kinetic processes and guide the Se ***,the relationship between the deposition conditions and resulting structure and morphology of electrodeposited Se is discussed,so as to regulate the morphology and composition of the ***,the advanced energy storage applications of Se in thin-film solar cells and secondary batteries are reviewed,and the electrochemical reaction processes of Se are systematically comprehended in monovalent and multivalent metal-ion *** on understanding the fundamental electrochemistry mechanism,the future development directions of Se-containing materials are considered in view of the in-depth review of reaction kinetics and energy storage applications.

关键词： electrochemical behaviors electrodeposition electrolytes energy storage selenium

The synergistic regulatory effect of PTP1B and PTK inhibitors on the development of Oedaleus decorus asiaticus Bei-Bienko

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Journal of Integrative Agriculture 2024年第8期23卷 2752-2763页

作者： Shuang Li Sibo Liu Chaomin Xu Shiqian Feng Xiongbing tu Zehua Zhang State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Chongqing Academy of Agricultural Sciences Chongqing 401329China Institute of Grassland Research Chinese Academy of Agricultural SciencesHohhot 010010China Inner Mongolia University Hohhot 010019China Scientific Observation and Experimental Station of Pests in Xilin Gol Rangeland Institute of Plant ProtectionChinese Academy of Agricultural SciencesXilinhot 026000China

Tyrosine phosphorylation is crucial for controlling normal cell growth,survival,intercellular communication,gene transcription,immune responses,and other *** tyrosine phosphatase(PTP)and protein tyrosine kinases(PTK)can achieve this goal by regulating multiple signaling *** decorus asiaticus is an important pest that infests the Mongolian Plateau *** aimed to evaluate the survival rate,growth rate,overall performance,and ovarian developmental morphology of the 4th instar nymphs of *** asiaticus while inhibiting the activity of protein tyrosine phosphatase-1B(PTP1B)and *** addition,the expression and protein phosphorylation levels of key genes in the MAPK signaling pathway and antioxidant enzyme activity were *** results showed no significant differences in survival rate,growth rate,or overall performance between PTP1B inhibitor treatment and ***,after PTK inhibitor treatment,these indexes were significantly lower than those in the *** ovarian size of female larvae after 15 days of treatment with PTK inhibitors showed significantly slower development,while female larvae treated with PTP1B exhibited faster ovarian growth than the control *** comparison to controls and nymphs treated with PTK inhibitors,the expression and phosphorylation levels of key genes in the MAPK signaling pathway under PTP1B inhibitor treatments were significantly higher in 4th instar ***,reactiveoxygen(ROS)species levels and the activities of NADPH oxidase and other antioxidant enzymes were considerably reduced,although they were significantly greater in the PTK inhibitor *** results suggest that PTP1B and PTK feedback inhibition in the mitogen-activated-protein kinases(MAPK)signal transfer can regulate the physiological metabolism of the insect as well as its developmental *** findings can facilitate future uses of PTP1B and PTK inhibitors in controlling insect development to help contro

关键词： PTP1B PTK inhibitor MAPK pathway Oedaleus decorus asiaticus development

Enhanced ferroelectric and improved leakage of BFO-based thin films through increasing entropy strategy

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International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2263-2273页

作者： Dongfei Lu Guoqiang Xi Hangren Li Jie tu Xiuqiao Liu Xudong Liu Jianjun Tian Linxing Zhang Institute for Advanced Materials Technology University of Science and Technology BeijingBeijing 100083China

BiFeO_(3)(BFO)has received considerable attention as a lead-free ferroelectric film due to its large theoretical remnant ***,BFO suffers from a large leakage current,resulting in poor ferroelectric ***,the sol-gel method was used to deposit a series of BFO-based thin films on fluorine-doped tin oxide substrates,and the effects of the substitution of the elements Co,Cu,Mn(B-site)and Sm,Eu,La(A-site)on the crystal structure,ferroelectricity,and leakage current of the BFO-based thin films were *** confirmed that lattice distortion by X-ray diffraction can be attributed to the substitution of individual elements in the BFO-based *** and Eu substitutions contribute to the lattice distortion in a pseudo-cubic structure,while La is biased toward *** force microscopy confirmed that reversible switching of ferroelectric domains by nearly 180°can be realized through the prepared *** ferroelectric hysteresis loops showed that the order for the polarization contribution is as follows:Cu>Co>Mn(B-site),Sm>La>Eu(A-site).The current density voltage curves indicated that the order for leakage contribution is as follows:Mn

关键词： increasing entropy synergistic ferroelectric film remnant polarization leakage current

A Fault Detection Method for Electric Vehicle Battery System Based on Bayesian Optimization SVDD Considering a Few Faulty Samples

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Energy Engineering 2024年第9期121卷 2543-2568页

作者： Miao Li Fanyong Cheng Jiong Yang Maxwell Mensah Duodu Hao tu School of Electronics and Electrical Engineering Anhui Polytechnic UniversityWuhu241000China

Accurate and reliable fault detection is essential for the safe operation of electric *** vector data description(SVDD)has been widely used in the field of fault ***,constructing the hypersphere boundary only describes the distribution of unlabeled samples,while the distribution of faulty samples cannot be effectively described and easilymisses detecting faulty data due to the imbalance of sample ***,selecting parameters is critical to the detection performance,and empirical parameterization is generally timeconsuming and laborious and may not result in finding the optimal ***,this paper proposes a semi-supervised data-driven method based on which the SVDD algorithm is improved and achieves excellent fault detection *** incorporating faulty samples into the underlying SVDD model,training deals better with the problem of missing detection of faulty samples caused by the imbalance in the distribution of abnormal samples,and the hypersphere boundary ismodified to classify the samplesmore *** Bayesian Optimization NSVDD(BO-NSVDD)model was constructed to quickly and accurately optimize hyperparameter *** the experiments,electric vehicle operation data with four common fault types are used to evaluate the performance with other five models,and the results show that the BO-NSVDD model presents superior detection performance for each type of fault data,especially in the imperceptible early and minor faults,which has seen very obvious ***,the strong robustness of the proposed method is verified by adding different intensities of noise in the dataset.

关键词： Fault detection vehicle battery system lithium batteries fault samples

T2M内齿型管无收缩加工关键技术及装备研究

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机床与液压 2020年第16期48卷 32-35页

作者：熊立贵涂志刚蔡昭华广东理工职业学院广东中山528428 中山市铿鸿印刷有限公司广东中山528400

分析空调器中的零部件换热器用T2M内齿形管胀管加工关键技术,使用机械胀管加工工艺对T2M管进行胀扩,使T2M铜管与铝箔翅片紧密接触,有效地进行热交换。普通胀管后T2M内径加大,相应的横截面积也增大,体积等同情况下,管的长度尺寸就会补偿... 详细信息

分析空调器中的零部件换热器用T2M内齿形管胀管加工关键技术,使用机械胀管加工工艺对T2M管进行胀扩,使T2M铜管与铝箔翅片紧密接触,有效地进行热交换。普通胀管后T2M内径加大,相应的横截面积也增大,体积等同情况下,管的长度尺寸就会补偿横截的加大面积,铜管长度就会收缩。研究的装备对工件上端铜管用锁紧结构锁紧,下端U形座采用下拉式反锁机构固定,保证换热器铜管长度不收缩,并且可同时进行180 o旋转双向加工杯型口,整套换热器减少T2M铜管用量5%左右。

关键词：换热器 T2M铜管胀管收缩率

Responses of plant diversity and soil microorganism diversity to nitrogen addition in the desert steppe,China

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Journal of Arid Land 2024年第3期16卷 447-459页

作者： YE He HONG Mei XU Xuehui LIANG Zhiwei JIANG Na tu Nare WU Zhendan College of Grassland Resources and EnvironmentInner Mongolia Agricultural UniversityInner Mongolia Key Laboratory of Soil Quality and Nutrient ResourcesHohhot 010018China Key Laboratory of Agricultural Ecological Security and Green Development at University of Inner Mongolia Hohhot 010018China

Nitrogen(N)deposition is a significant aspect of global change and poses a threat to terrestrial *** impact of plant-soil microbe relationships to N deposition has recently attracted considerable *** microorganisms have been proven to provide nutrients for specific plant growth,especially in nutrient-poor desert steppe ***,the effects of N deposition on plant-soil microbial community interactions in such ecosystems remain poorly *** investigate these effects,we conducted a 6-year N-addition field experiment in a Stipa breviflora *** steppe in Inner Mongolia Autonomous Region,*** N treatment levels(N0,N30,N50,and N100,corresponding to 0,30,50,and 100 kg N/(hm2•a),respectively)were applied to simulate atmospheric N *** results showed that N deposition did not significantly affect the aboveground biomass of desert steppe plants.N deposition did not significantly reduce the alfa-diversity of plant and microbial communities in the desert steppe,and low and mediate N additions(N30 and N50)had a promoting effect on *** variation pattern of plant Shannon index was consistent with that of the soil bacterial Chao1 index.N deposition significantly affected the beta-diversity of plants and soil bacteria,but did not significantly affect fungal *** conclusion,N deposition led to co-evolution between desert steppe plants and soil bacterial communities,while fungal communities exhibited strong stability and did not undergo significant *** findings help clarify atmospheric N deposition effects on the ecological health and function of the desert steppe.

关键词： soil microorganisms plant-microbial community interaction plant diversity nitrogen deposition desert steppe

Large animal models for Huntington's disease research

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Zoological Research 2024年第2期45卷 275-283页

作者： Bofeng Han Weien Liang Xiao-Jiang Li Shihua Li Sen Yan Zhuchi tu Guangdong-Hongkong-Macao CNS Regeneration Institute of Jinan University Key Laboratory of CNS Regeneration(Jinan University)-Ministry of EducationGuangdong Key Laboratory of Non-Human Primate ResearchGuangzhouGuangdong 510632China Department of Pathophysiology School of MedicineJinan UniversityGuangzhouGuangdong 510632China

Huntington'sdisease(HD)isahereditary neurodegenerative disorder for which there is currently no ***,the development of appropriate disease models is critical to thoroughly investigate disease *** genetic basis of HD involves the abnormal expansion of CAG repeats in the huntingtin(HTT)gene,leading to the expansion of a polyglutamine repeat in the HTT *** HTT carrying the expanded polyglutamine repeat undergoes misfolding and forms aggregates in the brain,which precipitate selective neuronal loss in specific brain *** models play an important role in elucidating the pathogenesis of neurodegenerative disorders such as HD and in identifying potential therapeutic *** to the marked species differences between rodents and larger animals,substantial efforts have been directed toward establishing large animal models for HD *** models are pivotal for advancing the discovery of novel therapeutic targets,enhancing effective drug delivery methods,and improving treatment *** have explored the advantages of utilizing large animal models,particularly pigs,in previous *** then,however,significant progress has been made in developing more sophisticated animal models that faithfully replicate the typical pathology of *** the current review,we provide a comprehensive overview of large animal models of HD,incorporating recent findings regarding the establishment of HD knock-in(KI)pigs and their genetic *** also explore the utilization of large animal models in HD research,with a focus on sheep,non-human primates(NHPs),and *** objective is to provide valuable insights into the application of these large animal models for the investigation and treatment of neurodegenerative disorders.

关键词： Huntington's disease Large animal models Sheep Non-human primates Transgenic pigs