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A review on dFACS(I):System design and dynamics modeling

Chinese Journal of Aeronautics 2024年第5期37卷 92-119页

作者： Bohan JIAO Qifan LIU Zhaohui dANG Xiaokui yUE yonghe ZHANG yuanqing XIA Li dUAN Qinglei HU Chenglei yUE Pengcheng WANG Ming GUO Zhansheng dUAN Bing cui Chu ZHANG Xiaodong SHAO School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 710699China School of Automation Beijing Institute of TechnologyBeijing 100081China Institute of Mechanics Chinese Academy of SciencesBeijing 710043China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Automation Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

The drag-Free and Attitude Control System(dFACS)is a critical platform for various space missions,including high precision satellite navigation,geoscience and gravity field measurement,and space scientific *** paper presents a comprehensive review of over sixty years of research on the design and dynamics model of ***,we examine the open literature on dFACS and its applications in drag-Free missions,providing readers with necessary background information on the ***,we analyze the system configurations and main characteristics of different dFACSs,paying particular attention to the coupling mechanism between the system configuration and dynamics ***,we summarize the dynamics modeling methods and main dynamics models of dFACS from multiple perspectives,including common fundamentals and specific ***,we identify current challenges and technological difficulties in the system design and dynamics modeling of dFACS,while suggesting potential avenues for future *** paper aims to provide readers with a comprehensive understanding of the state-of-the-art in dFACS research,as well as the future prospects and challenges in this field.

关键词： drag-Free dFACS System design dynamics Modeling Control design

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Stubborn Hypoxia in Neonates with d-Transposition of the Great Arteries after Arterial Switch Operation: Central Sleep Apnea as the Cause and Potential Indicator of Brain Immaturity

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Congenital Heart disease 2024年第2期19卷 185-195页

作者： Camden L.Hebson Kyle Bliton Amr y.Hammouda Kaitlyn Barr W.Hampton Gray Mohini Gunnett Waldemar F.Carlo department of Pediatrics Division of Pediatric CardiologyUniversity of Alabama BirminghamBirmingham35233USA department of Pediatrics Division of Pediatric PulmonologyUniversity of Alabama BirminghamBirmingham35233USA department of Pediatrics University of Alabama BirminghamBirmingham35233USA department of Surgery Division of Cardiothoracic SurgeryUniversity of Alabama BirminghamBirmingham35233USA

d-transposition of the great arteries(d-TGA)is surgically repaired with the arterial switch operation(ASO)with excellent results,however short and long-term morbidities still develop including neurocognitive *** significant central sleep apnea is uncommon in non-premature infants,but when present indicates immature autonomic control of respiration likely.d.e to a neurologic *** report the unanticipatedfinding of central sleep apnea in four-term neonates with d-TGA after uncomplicated ASO,with the short-term complication of delay.d.hospital discharge and long-term concerns regarding this early marker of brain immaturity and its hindrance to normal *** this report,we will review each patient’s clinical course and then examine the literature on pediatric central sleep apnea,neurodevelopmental outcomes after ASO,and the important overlap of these entities in the care of patients going forward.

关键词： Transposition congenital heart disease sleep apnea polysomnography

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Screening and identification of salt tolerance soybean varieties and germplasms

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Oil Crop Science 2024年第3期9卷 204-210页

作者： Chen L. Peng L. Ouyang W. yao H. ye y. Shan Z. Cao d. Chen S. yang Z. Huang y. Han B. Sha A. Zhou X. Chen H. Key Laboratory of Biology and Genetic Improvement of Oil Crops Ministry of Agriculture and Rural Affairs Oil Crops Research Institute of Chinese Academy of Agricultural Sciences Wuhan 430062 China College of Agriculture Yangtze University Jingzhou 434000 China

Soil salinization is a globally prevalent abiotic environmental stress. The imbalance of ions caused by high concentrations of sodium chloride results in a 40% reduction in soybean yield. Soybean, as an important crop for soil quality improvement, necessitates the identification of salt-tolerant varieties and germplasms to effectively utilize and enhance saline-alkali land. In this study, we assessed the salt tolerance of 435 soybean varieties and germplasms during the seedling stage. Among them, Qihuang34, you2104, Hongzhudou, Pamanheidou, and Osage exhibited grade 1 salt tolerance rates surpassing other tested materials. Furthermore, Hongzhudou and Qihuang34 demonstrated higher salt tolerance during germination and emergence stages based on their elevated rates of emergence, salt tolerance index, chlorophyll content, and shoot fresh weights. Overall findings provide valuable resources for molecular breeding efforts aimed at developing salt-tolerant soybean varieties suitable for cultivation in saline-alkali soils. © 2024 the Oil Crop Research Institute, Chinese Academy of Agriculture Sciences

关键词： Germination and emergence stage Germplasms Salt tolerance Seedling stage Soybean Varieties

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3d立体格栅–砂界面剪切性状试验研究

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建筑技术 2024年第4期55卷 468-470页

作者：崔倩潍坊市潍城区符山水库运营维护中心山东潍坊261055

为探究土工格栅–砂界面的剪切律、强度律和体变律,基于3 d打印技术制作的土工格栅,通过改进的应变控制式直剪仪进行了不同横肋数量的土工格栅与不同干湿类型的标准砂间的界面剪切试验。结果表明:法向应力越大,剪切应力弱化现象越明显,... 详细信息

为探究土工格栅–砂界面的剪切律、强度律和体变律,基于3 d打印技术制作的土工格栅,通过改进的应变控制式直剪仪进行了不同横肋数量的土工格栅与不同干湿类型的标准砂间的界面剪切试验。结果表明:法向应力越大,剪切应力弱化现象越明显,界面抗剪强度及其指标与横肋数量成正比例关系;3 d立体格栅–湿砂界面粘聚力随着横肋数量的增多而减小。3 d立体格栅–干砂界面抗剪强度及其指标比3 d立体格栅–湿砂界面大,剪胀特性更明显。干砂和湿砂均表现出剪胀的体变行为,且横肋数量越多,剪胀特性越明显。研究成果可为探究3 d土工格栅在实际工程中的应用提供参考。

关键词： 3d打印土工格栅标准砂强度律体变律

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Influence of variable viscosity and double diffusion on the convective stability of a nanofluid flow in an inclined porous channel

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Applied Mathematics and Mechanics(English Edition) 2024年第3期45卷 563-580页

作者： N.HUMNEKAR d.SRINIVASACHARyA department of Mathematics National Institute of TechnologyWarangal 506004TelanganaIndia

The influence of variable viscosity and double diffusion on the convective stability of a nanofluid flow in an inclined porous channel is *** darcyBrinkman model is used to characterize the fluid flow dynamics in porous *** analytical solutions are obtained for the unidirectional and completely.d.veloped *** on a normal mode analysis,the generalized eigenvalue problem under a perturbed state is *** eigenvalue problem is then solved by the spectral ***,the critical Rayleigh number with the corresponding wavenumber is evaluated at the assigned values of the other flow-governing *** results show that increasing the darcy number,the Lewis number,the dufour parameter,or the Soret parameter increases the stability of the system,whereas increasing the inclination angle of the channel destabilizes the ***,the flow is the most unstable when the channel is vertically oriented.

关键词： nanofluid inclined channel variable viscosity linear stability double dif-fusion porous medium

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dynamic Sulfur-Rich Polymers from Elemental Sulfur and Epoxides

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Chinese Journal of Polymer Science 2024年第10期42卷 1479-1487页

作者： Ke-Xiang Chen Chen-Hui cui Zhen Li Ting Xu Hao-Qing Teng Zhi-yuan He yin-Zhou Guo Xiao-Qing Ming Zhi-Shen Ge yan-Feng Zhang Tie-Jun Wang School of Chemistry Engineering Research Center of Energy Storage Materials and Devices Ministry of Education Xi'an Jiaotong University State Key Lab for Strength and Vibration of Mechanical Structures Department of Engineering Mechanics Xi'an Jiaotong University

Sulfur-containing dynamic polymers had attracted significant attention due to their unique chemical structures with high *** sulfur, an inexpensive industrial waste product, to synthesize dynamic polysulfide polymers through reverse vulcanization has been a notable approach. However, this method required high temperatures and resulted in the release of unpleasant oders. In this study, we presented a robust method for the preparation of sulfur-rich polymers with dynamic polysulfide bonds from elemental sulfur and inexpensive epoxide monomers via a one-pot strategy at the mild room temperature. different types of polysulfide molecules and polymers were synthesized by reacting various epoxide compounds with sulfur, along with the investigation of their structures and dynamic behaviors. It was noteworthy that the obatined polymers prepared from m-(2,3-epoxypropoxy)-N,N-bis(2,3-epoxypropyl)aniline and elemental sulfur exhibit multiple dynamic behaviors, including polysulfide metathesis and polysulfide-thiol exchange, enabling their rapid stress relaxation, self-healing, reprocessing and degradable properties of the cross-linked polymer. More importantly, the hydroxyl groups at the side chains from epoxide ring opening exhibited potential transesterification. This work provided a facile strategy for designing dynamic sulfur-rich polymers via a mild synthesis route.

关键词： dynamic covalent bond dynamic polymer Elemental sulfur Sulfur-containing polymer

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考虑群体决策差异冲突解决机制的配电站房健康状态评估方法

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电力系统保护与控制 2024年第10期52卷 167-178页

作者：罗昆高伟洪翠福州大学电气工程与自动化学院福建福州350108 智能配电网装备福建省高校工程研究中心福建福州350108

针对配电站房缺乏健康评估机制、运维周期设置不合理的问题,提出了一种考虑群体决策差异冲突解决机制的配电站房健康状态综合评估方法。首先,建立配电站房指标体系和专家评价框架,设计了一种新型的二元冲突测量函数来量化全局冲突。然后... 详细信息

针对配电站房缺乏健康评估机制、运维周期设置不合理的问题,提出了一种考虑群体决策差异冲突解决机制的配电站房健康状态综合评估方法。首先,建立配电站房指标体系和专家评价框架,设计了一种新型的二元冲突测量函数来量化全局冲突。然后,使用专家评价结果的虚假度、可信度、可用度等测度指标构造专家修正因子,以改进d-S证据理论,通过聚合不同专家的评价意见来量化评价指标的权重。接着,建立改进灰色关联度-逼近理想解法(grey relation analysis-technique for order preference by similarity to an ideal solution, GRA-TOPSIS)评估模型,引入灰色关联接近度,与距离接近度融合得到综合接近度,改善TOPSIS评价判据片面性的缺陷。最后,计算每个配电站房的评价值与理想解之间的综合接近度,反映配电站房的健康状态。实验分析表明该方法能兼容专家评价之间的冲突性、差异性、不确定性,与现有方法相比评估结果更具准确性和合理性,对运维人员制定合理的检修决策具有一定的指导价值。

关键词：配电站房专家评价框架改进d-S证据理论专家修正因子改进GRA-TOPSIS评估方法

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Flavonoids from mulberry leaves inhibit fat production and improve fatty acid distribution in adipose tissue in finishing pigs

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Animal Nutrition 2024年第1期16卷 147-157页

作者： yingying Liu yinglin Peng Chen Chen Huibo Ren Ji Zhu yuan deng Qingming cui Xionggui Hu Jianhua He Huali Li Xinghui Zhu yulong yin Jun He yi Xiao College of Animal Science and Technology Hunan Agricultural UniversityChangsha410128China Hunan Institute of Animal and Veterinary Science Changsha410131China Key Laboratory of Conservation and Genetic Analysis of Local Pig Breed Germplasm Resources Changsha410131China College of Information and Intelligence Hunan Agricultural UniversityChangsha410128China Institute of Subtropical Agriculture Chinese Academy of SciencesChangsha410125China

This study evaluated the effects of flavonoids from mulberry leaves(FML)on plasma biochemical indices,serum activities of lipid metabolism-related enzymes,fat morphology,fatty acid composition,and lipid metabolism in different adipose tissues of finishing *** used 120 Chinese hybrid barrows of Berkshire and Bama mini-pigs with an average initial body weight of 45.11±4.23 *** pigs were randomly assigned to five treatment groups and fed a control diet based on corn,soybean meal,and wheat bran or a control diet supplemented with 0.02%,0.04%,0.08%,or 0.16%*** experimental group had six replicates(pens),with four pigs per *** a 7-d adaptation period,the feeding trial was conducted for 58 *** and adipose tissue samples were collected from 30 pigs(one pig per pen)at the end of the *** results showed that FML supplementation significantly.d.creased the feed intake to body gain ratio,the plasma concentrations of total cholesterol and free fatty acids,and the serum activity of 3-hydroxy-3-methylglutaryl coenzyme A reductase(linear or quadratic effects,Pd decreased the plasma triglyceride concentration(quadratic,P=0.07).Increasing FML supplementation increased the average daily gain and serum activities of lipoprotein lipase(linear and quadratic effects,Pd adipose triglyceride lipase(linear,Pdietary FML supplementation decreased the adipocyte area in the dorsal subcutaneous adipose(dSA)tissue of finishing pigs(linear,P=0.05)and increased the adipocyte area in the visceral adipose tissue(quadratic,Pdecreased the C20:1 content in dSA,abdominal subcutaneous adipose,and visceral adipose tissues of finishing pigs(Pd increased the C18:3n3 and n-3 PUFA contents(Pd metabolism genes were regulated by the PPARγ-LXRa-ABCA1 signaling pathway,and their expressions differed in different adipose *** findings suggest that FML improved growth performance,regulated lipid met

关键词： Finishing pig Mulberry leaf Flavonoid Lipid metabolism Fatty acid Lard

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Multifunctional solar-blind ultraviolet photodetectors based on p-PCdTBT/n-Ga_(2)O_(3)heterojunction with high photoresponse

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InfoMat 2024年第2期6卷 118-130页

作者： yifei Wang Zhenhua Lin Jingli Ma yongyi Wu Haidong yuan dongsheng cui Mengyang Kang XingGuo Jie Su Jinshui Miao Zhifeng Shi Tao Li Jincheng Zhang yue Hao Jingjing Chang State Key.d.scipline Laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian UniversityXi'anthe People's Republic of China School of Physics and Microelectronics Key Laboratory of Material PhysicsMinistry of EducationZhengzhou UniversityZhengzhouthe People's Republic of China Center for Spintronics and Quantum Systems State Key Laboratory for Mechanical Behavior of MaterialsDepartment of Materials Science and EngineeringXi'an Jiaotong UniversityXi'anthe People's Republic of China Advanced Interdisciplinary Research Center for Flexible Electronics Xidian UniversityXi'anthe People's Republic of China State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaithe People's Republic of China

Solar-blind ultraviolet(UV)photodetectors based on p-organic/n-Ga_(2)O_(3) hybrid heterojunctions have attracted extensive attention ***,the multifunctional solar-blind photodetector based on p-type poly[N-90-heptadecanyl-2,7-carbazole-alt-5,5-(40,70-di-2-thienyl-20,10,30-benzothiadiazole)](PCdTBT)/n-type amorphous Ga_(2)O_(3)(a-Ga_(2)O_(3))is fabricated and investigated,which can work in the phototransistor mode coupling with self-powered *** the introduction of PCdTBT,the dark current of such the a-Ga_(2)O_(3)-based photodetector is decreased to 0.48 ***,the photoresponse parameters of the a-Ga_(2)O_(3)-based photodetector in the phototransistor mode to solar-blind UV light are further increased,that is,responsivity(R),photo-detectivity.d.),and external quantum efficiency(EQE)enhanced to 187 A W^(-1),1.3×10^(16) Jones and 9.1×10^(4)% under the weak light intensity of 11μW cm^(-2),*** to the formation of the built-in field in the p-PCdTBT/n-Ga_(2)O_(3) type-Ⅱ heterojunction,the PCdTBT/Ga_(2)O_(3) multifunctional photodetector shows self-powered *** responsivity of p-PCdTBT/n-Ga_(2)O_(3) multifunctional photodetector is 57.5 mA W^(-1) at zero *** multifunctional p-n hybrid heterojunction-based photodetectors set the stage for realizing high-performance amorphous Ga_(2)O_(3) heterojunction-based photodetectors.

关键词： amorphous Ga_(2)O_(3) heterojunction multifunctional PCdTBT solar-blind photodetectors

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Atomic dispersed Hetero‑Pairs for Enhanced Electrocatalytic CO_(2)Reduction

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Nano-Micro Letters 2024年第1期16卷 55-67页

作者： Zhaoyong Jin Meiqi yang yilong dong Xingcheng Ma ying Wang Jiandong Wu Jinchang Fan dewen Wang Rongshen Xi Xiao Zhao Tianyi Xu Jingxiang Zhao Lei Zhang david J.Singh Weitao Zheng Xiaoqiang cui State Key Laboratory of Automotive Simulation and Control School of Materials Science and EngineeringKey Laboratory of Automobile Materials of MOEElectron Microscopy CenterJilin UniversityChangchun 130012People’s Republic of China Key Laboratory of Photonic and Electronic Bandgap Materials Ministry of Educationand College of Chemistry and Chemical EngineeringHarbin Normal UniversityHarbin 150025People’s Republic of China College of Chemistry Jilin UniversityChangchun 130012People’s Republic of China department of Physics and Astronomy and department of Chemistry University of MissouriColumbiaMO 65211USA

Electrochemical carbon dioxide reduction reaction(CO_(2)RR)involves a variety of intermediates with highly correlated reaction and ad-desorption energies,hindering optimization of the catalytic *** example,increasing the binding of the*COOH to the active site will generally increase the*CO desorption *** this relationship may be expected to dramatically improve the intrinsic activity of CO_(2)RR,but remains an unsolved ***,we addressed this conundrum by constructing a unique atomic dispersed hetero-pair consisting of Mo-Fe di-atoms anchored on N-doped carbon *** system shows an unprecedented CO_(2)RR intrinsic activity with TOF of 3336 h−1,high selectivity toward CO production,Faradaic efficiency of 95.96%at−0.60 V and excellent *** calculations show that the Mo-Fe diatomic sites increased the*COOH intermediate adsorption energy by bridging adsorption of*COOH *** the same time,d-d orbital coupling in the Mo-Fe di-atom results in electron delocalization and facilitates desorption of*CO ***,the undesirable correlation between these steps is *** work provides a promising approach,specifically the use of di-atoms,for breaking unfavorable relationships based on understanding of the catalytic mechanisms at the atomic scale.

关键词： CO_(2)reduction reaction Atomic dispersed catalyst Hetero-diatomic pair Ad-desorption energy Linear scaling relation

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