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A novel temperature-compensation method based on correlation analysis for multi-FOG INS

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Chinese Journal of Aeronautics 2023年第6期36卷 279-287页

作者： Longjie tian Yanxiong NIU Chenwei HUANG Haoyang LI Yang PANG Yanqiang YANG Institute of Optics and Electronics School of Instrumentation Science and Optoelectronics EngineeringBeihang UniversityBeijing 100191China

Aimed at improving the bias stability of Fiber-Optic Gyroscope(FOG)-based inertial navigation systems in environments of various ambient temperatures,a novel temperaturecompensation method based on a correlation analysis of the same batch of FOGs is *** empirical mode decomposition method was employed to filter the high-frequency noises of the ***,the correlation information of the multiple FOGs was used to analyze the feasibility of the ***,the same residual error of the FOGs was compensated via the simple piecewise linear *** experimental results indicate that excellent compensation effects for both high-and low-accuracy FOGs are achieved using the proposed ***,the accuracies of high-accuracy FOGs are improved by approximately 33.9%,20%,and 31.2%,while those of low-accuracy FOGs are improved by approximately 39.1%,20.8%,and 26.1%.The method exhibits the merits of simplicity,validity,and stability,and thus is expected to be widely used in engineering applications.

关键词： Correlation methods Empirical mode decomposition Inertial navigation systems Temperature Fiber-Optic Gyroscope(FOG)

Access to chiral homoallylic vicinal diols from carbonyl allylation of aldehydes with allyl ethers via palladium-catalyzed allylic C-H borylation

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Science China Chemistry 2022年第2期65卷 298-303页

作者： tian-Ci Wang Pu-Sheng Wang Dian-Feng Chen Liu-Zhu Gong Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry University of Science and Technology of ChinaHefei 230026China Center for Excellence in Molecular Synthesis of CAS Hefei 230026China

Chiral homoallylic vicinal diols are found in many bioactive compounds and are among the most versatile functional groups in organic chemistry. Here, we describe an asymmetric carbonyl allylation of aldehydes with allyl ethers proceeding via allylic C-H borylation enabled by palladium and chiral phosphoric acid sequential catalysis, providing facile access to homoallylic vicinal anti-diols in high yields and with excellent stereoselectivity. This protocol enables the total synthesis of aigialomycin D to be finished within 7 steps.

关键词： asymmetric catalysis palladium allylic C–H borylation allyl ethers chiral phosphoric acid aldehydes

Identification of two novel mutations in the ATP7B gene that cause Wilson's disease

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World Journal of Pediatrics 2017年第4期13卷 387-391页

作者： Hong-wen Zhu Zhong-Bin Tao Gang Su Qiao-Ying Jin Liang-Tao Zhao Jia-Rui Zhu Jun Yan tian-Yu Yu Jie-Xian Ding Yu-Min Li Laboratory of Medical Genetics The Second Hospital of Lanzhou UniversityLanzhouChina Key Laboratory of Digestive System Tumors of Gansu Province LanzhouChina Department of Pediatrics The First Hospital of Lanzhou UniversityLanzhouChina Institute of Genetics Lanzhou University School of Basic Medical Sciences Second Clinical Medical College of Lanzhou University

Background:Wilson's disease is an autosomal recessive disorder characterized by liver disease and/or neurologic deficits due to copper accumulation and is caused by pathogenic mutations in the ATP7B ***:Two unrelated Chinese patients born to nonconsanguineous parents who were diagnosed with earlyonset Wiison's *** sequencing and bioinformation analysis were ***:We have identified four mutations in two family trios,of which two were novel,namely,c.3028A>G(p.K1010E) and c3992T>G (p.Y1331X),in each ***:Gene testing is playing an important role in diagnosis of Wilson's *** early-onset of Wilson's disease is apparently not associated with P-ATPase domain in the ATP7B *** findings further widen the spectrum of mutations involving the ATP7B gene.

关键词： ATP7B mutation sequencing Wilson's disease

Progress toward understanding the fullerene-related chemical interactions in perovskite solar cells

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Nano Research 2022年第8期15卷 7139-7153页

作者： Kaikai Liu Chengbo tian Yuming Liang Yujie Luo Liqiang Xie Zhanhua Wei Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamen 361021China

Fullerene materials have been widely used to fabricate efficient and stable perovskite solar cells(PSCs)due to their excellent electron transport ability,defect passivation effect,and *** studies have shown that fullerene-related chemical interaction has played a crucial role in determining device ***,the corresponding fullerene-related chemical interactions are yet well ***,a comprehensive review of fullerene materials in regulating carrier transport,passivating the surface and grain boundary defects,and enhancing device stability is ***,the influence of the fullerene-related chemical interactions,including fullerene-perovskite,fullerene-inorganic electron transport layer(IETL),and fullerene-fullerene,on the device performance is well ***,we outline some perspectives for further design and application of fullerene materials to enhance the performance and commercial application of PSCs.

关键词： perovskite solar cells functional fullerenes chemical interactions device performance

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近五年来图情领域搜索引擎研究综述

情报科学 2014年第7期32卷 158-161页

作者：毛秀梅田辛玲侯雯悦吉林大学管理学院吉林长春130025 北京师范大学珠海分校图书馆广东珠海519085

对近五年来图情领域对搜索引擎研究的文献的进行了梳理,分析了搜索引擎的分类、评价指标及应用情况等,找出目前研究存在的问题,对未来的研究进行了展望。

关键词：搜索引擎搜索引擎分类评价指标

Discovery of cryptolepine derivatives as novel promising agents against phytopathogenic bacteria

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Frontiers of Chemical Science and Engineering 2023年第2期17卷 156-166页

作者： Ying-Hui He Qing-Ru Chu Shao-Yong Zhang Li-Rong Guo Yue Ma Bao-Qi Zhang Zhi-Jun Zhang wen-Bin Zhao Yong-Mei Hu Chen-Jie Yang Sha-Sha Du tian-Lin Wu Ying-Qian Liu Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province College of Life ScienceHuzhou UniversityHuzhou 313000China School of Pharmacy Lanzhou UniversityLanzhou 730000China Laboratory of Grassland Agro-ecosystems Lanzhou UniversityLanzhou 730000China

To ensure the production of food crops,a series of cryptolepine derivatives were synthesised,after which their antibacterial activities and mechanism of action against three plant pathogens were *** bioassay results indicated that most of the target compounds displayed potent inhibitory effects against Xanthomonas oryzae(***)and Xanthomonas axonopodis ***(*** pv.c.).Remarkably,compound 9 exhibited the best in vitro antibacterial activity against ***,with a minimum inhibitory concentration(MIC)value of 0.78μg·mL^(-1).Compound 2 exhibited the best in vitro antibacterial activity against *** pv.c.,with an MIC value of 0.39μg·mL^(-1).These activities were superior to those of copper quinolate(MIC=6.25,25μg·mL^(-1))and thiodiazole copper(MIC=100,200μg·mL^(-1))against *** and *** *** vivo experiments demonstrated the promising applicability of compound 9 for the control of rice bacterial ***,compound 9 was selected as a candidate to conduct preliminary analyses of the antibacterial mechanisms of cryptolepine *** electron microscopy and transmission electron microscopy observations,extracellular polysaccharide production,biofilm formation,transcriptomic,quantitative reverse transcription-polymerase chain reaction analyses,and molecular docking assays were ***,our findings demonstrated that compound 9 might act via multifarious mechanisms to down-regulate virulence factors and cause cell death.

关键词： cryptolepine derivatives phytopathogenic bacteria antibacterial activity mechanism of action

Molecular mechanisms of cardiac aging

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Journal of Geriatric Cardiology 2010年第3期7卷 184-188页

作者： tian-Jun Zhou Yan Gao Department of Biochemistry University of Texas Southwestern Medical Center at Dallas Dallas TX 75390-9038 USA

Age-associated changes in cardiovascular structure/ function are implicated in the markedly increased risk for cardiovascular disease in older persons. Aging not only prolongs exposure to several other cardiovascular risks, but also leads to intrinsic cardiac changes, which reduces cardiac functional reserve, predisposes the heart to stress and contributes to increased cardiovascular mortality in the elderly. Intrinsic cardiac aging in the murine model closely recapitulates age-related cardiac changes in humans, includ- ing left ventricular hypertrophy, fibrosis and diastolic dysfunction. Cardiac aging in mice is accompanied by accumulation of mitochondrial protein oxidation, increased mitochondrial DNA mutations, increased mitochondrial biogenesis, as well as decreased cardiac SERCA2 protein. All of these age-related changes are significantly attenu- ated in mice overexpressing catalase targeted to mitochondria （mCAT）. These findings demonstrate the critical role of rnitochondrial reactive oxygen species （ROS） in cardiac ag ing and support the potential antioxidants to cardiac aging lar diseases. application of mitochondrial and age-related cardiovascular diseases.

关键词： cardiac aging molecular mechanisms reactive oxygen species

Electronic Properties of Solid Composed of Al_(12)Ge Clusters

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Chinese Physics Letters 1998年第2期15卷 103-105页

作者： ZHU Zi-zhong tian Bo HUANG Mei-chun Department of Physics Xiamen UniversityXiamen 361005

The ab initio pseudopotential local-density studies on the electronic structure and geometry of a theoretical solid are presented with Al_(12)Ge cluster serving as the building block of the *** results show that bulk material formed from cubic close-packing of All2Ge clusters will eventually be an aluminum-like metal when lattice parameter of the solid and atomic geometry of the clusters are optimized by the crystal field.

关键词： material. field. geometry

Surface and Electrical Properties of NiCr Thin Films Prepared by DC Magnetron Sputtering

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Journal of Wuhan University of Technology(Materials Science) 2008年第2期23卷 159-162页

作者： Zhou Jicheng tian Li YAN Jianwu School of Physics Science and Technology Central South University Changsha 410083 China

Several batches of NiCr alloy thin films with different thickness were prepared in a multi-targets magnetron sputtering apparatus by changing sputtering time while keeping sputtering target power of Ni and Cr fixed. Then the as-deposited films were characterized by energy-dispersive X-Ray spectrometer （EDX）, Atomic Force Microscope （AFM） and four-point probe （FPP） to measure surface grain size, roughness and sheet resistance. The film thickness was measured by Alpha-Step IQ Profilers. The thickness dependence of surface roughness, lateral grain size and resistivity was also studied. The experimental results show that the grain size increases with film thickness and the surface roughness reaches the order of nanometer at all film thickness. The as-deposited film resistivity decreases with film thickness.

关键词： magnetron sputtering NiCr alloy films surface morphology resistivity