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Chinese journal of Structural Chemistry 2006年第9期25卷 1148-1153页

作者： xiao Guang-Can Center of Analysis and measurement Fuzhou University Fuzhou Fujian 350002 China

A silver iodide, （ipq）4Ag418 1, has been synthesized in the presence of ipq （ipq = N-（isopentyl）-quinolinium） acting as a structure-directing reagent （SDA）. Compound 1 crystallizes in the triclinic system, space group PT, with a = 9.850（2）, b = 11.564（2）, c = 16.111（3） ,A ,α = 104.64（3）, β = 105.73（3）, γ = 94.37（3）o, V= 1688.3（7） A^3, Z = 2, D,= 2.205 g/cm^3, F（000） = 1042, C28H33Ag2l4N2, mr= 1120.90, μ（moKa） = 4.836 mm^-1, the final R = 0.0363 and wR = 0.0761 for 5465 observed reflections with 1 〉 2σ（I）. 1 consists of uncoordinated structure-directing molecule and inorganic moiety tuned by organic SDA. Tetrameric Ag4I8^4- anion in 1 is composed of edgesharing AgI4 tetrahedra and AgI3 planar triangles. Electrostatic interaction between organic counter cations and inorgan!c moieties is present and contributes to the crystal packing. 1 was further characterized with IR, UV-Vis, elemental analysis and cyclic voltammetry. Based on the crystal structure data, quantum chemical calculation with DFr method was used to reveal the electronic structure and optical property of 1.

关键词： coordination polymers template synthesis iodide quaternary ammonium

Ultra-thin Laminated metal Composites with Ultra-high Strength and Excellent Soft magnetic Properties

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Acta metallurgica Sinica(English Letters) 2020年第3期33卷 385-390页

作者： Le Zhang Wei Wang xiaofei xiao m.Babar Shahzad Yiyin Shan Ke Yang Institute of metal Research Chinese Academy of SciencesShenyang 110016China School of materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Key Laboratory of Nuclear materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Structural metallic materials with excellent functional performance and lightweight features have always been the goal of material scientists’ *** this work,laminated metal composites of different thicknesses(less than 0.4 mm) composed of structural materials with great differences in deformation ability were successfully fabricated via a novel processing ***-high strength and excellent soft magnetic properties were combined perfectly in the ultra-thin and super-light laminated metal composite strips due to unique structural design and essential attributes of the initial *** results emphasize the significant potential application value of the ultra-thin laminated metal composites in the field of structural and functional integration.

关键词： Laminated metal composites Ultra-high strength Ultra-thin Soft magnetic property maraging steel

澳大利亚墨尔本皇家理工大学(RmIT)技术情报硕士学位课程设置

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图书情报知识 1991年第3期8卷 49-52页

作者： m.j.赖姆斯顿李纲澳大利亚墨尔本皇家理工大学(RmIT)应用社会科学与传播学院

本文是澳大利亚墨尔本皇家理工大学(RmIT)应用社会科学与传播学院院长m.j.赖姆斯顿向北京第二届情报学研究生教育国际研讨会(1991.3.27—31)提交的论文。现征得作者同意,并经作者亲自修改,由李纲译成中文,在本刊发表,供我国图书馆学情... 详细信息

本文是澳大利亚墨尔本皇家理工大学(RmIT)应用社会科学与传播学院院长m.j.赖姆斯顿向北京第二届情报学研究生教育国际研讨会(1991.3.27—31)提交的论文。现征得作者同意,并经作者亲自修改,由李纲译成中文,在本刊发表,供我国图书馆学情报学专业研究生教育部门参考。发表时,文字略有删节。

关键词：澳大利亚情报学教育课程设置

Fluorescence lifetime imaging for studying DNA compaction and gene activities

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Light(Science & Applications) 2021年第12期10卷 2349-2359页

作者： Svitlana m.Levchenko Artem Pliss xiao Peng Paras N.Prasad junle Qu Key Laboratory of Optoelectronic Devices and Systems of ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhenGuangdong 518060China Department of Cell Biophysics Faculty of BiochemistryBiophysics and BiotechnologyJagiellonian University30-387 KrakowPoland Institute for Lasers Photonics and BiophotonicsUniversity at BuffaloState University of New YorkBuffaloNY 14260-3000USA

Optical imaging is a most useful and widespread technique for the investigation of the structure and function of the cellular ***,an analysis of immensely convoluted and irregularly compacted DNA polymer is highly challenging even by modern super-resolution microscopy *** we propose fluorescence lifetime imaging(FLIm)for the advancement of studies of genomic structure including DNA compaction,replication as well as monitoring of gene *** proposed FLIm assay employs two independent mechanisms for DNA compaction *** mechanism relies on the inverse quadratic relation between the fluorescence lifetimes of fluorescence probes incorporated into DNA and their local refractive index,variable due to DNA compaction *** mechanism is based on the Förster resonance energy transfer(FRET)process between the donor and the acceptor fluorophores,both incorporated into *** these proposed mechanisms were validated in cultured *** obtained data unravel a significant difference in compaction of the gene-rich and gene-poor pools of genomic *** show that the gene-rich DNA is loosely compacted compared to the dense DNA domains devoid of active genes.

关键词： expression. lifetime donor

Predators of Cacopsylla pyri in NE ***:Anthocoridae and miridae

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Predators of Cacopsylla pyri in NE ***:Anthocoridae and Miri...

masses and Sigma Terms of Pentaquarks in Chiral Perturbation Theory

International Conference on Integrated Fruit Production

作者： Artigues,m. Avilla,j. jauset,A.m. Sarasua,m.j. Centre

＜正＞Since 1990 we have been monitoring the populations of pear pests and beneficials in a commercial orchard free from pesticides. The Heteroptera,Anthocoridae and miridae,were the predators whose populations were more related to the dynamics of Cacopsylla pyri populations. Within the Anthocoridae,Anthocoris nemoralis was able to respond to psylla outbreaks,with a stronger response when the outbreak was in summer than when it was in *** group of Orius species was more constant in numbers and as abundant as *** the years without psylla outbreaks. The miridae appeared every year earlier than the Anthocoridae and in numbers related to the psylla population from the previous *** years with the higher initial numbers of miridae showed the lower peaks of *** these predators are polyphagous,as are the Orius species,their populations were more related to the psylla *** relationship can clearly be seen in Pilophorus perplexus,the species that could be identified every year in all its stages.

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Communications in Theoretical Physics 2006年第4X期46卷 704-710页

作者： LI xiao-Ya LU xiao-Fu Department of Physics Sichuan University Chengdu 610064 China Institute of Theoretical Physics the Chinese Academy of Sciences Beijing 100080 China China Center of Advanced Science and Technology (World Laboratory) Beijing 100080 China

Assuming that the recently θ＋ and other exotic resonances belong to the pentaquark i0 of SU（3）I with j^P = 1/2, we constructed a relativistic effective lagrangian in the frame work of baryon chiral perturbation theory. The masses of pentaquarks under isospin symmetry is determined by calculating the propagator to one loop, where the extended on-mass-shell renormalization scheme is applied. Using the experimental data for masses of θ＋, Ξ and N, we estimated the mass of Σ and the a terms.

关键词： pentaquark chiral perturbation theory σ term

Role of Brm in skin tumour progression from benign to malignant

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Role of Brm in skin tumour progression from benign to malign...

Coning motion instability of spinning missiles induced by the delay of strap-down seeker

The 3rd Asian and Oceanian Conference on Photobiology

作者： Bugeja m.j. Lyons j.G. Halliday G.m. Dermatology Research Laboratories Blackburn BuildingMelanoma and Skin Cancer Research InstituteSydney Cancer CentreUniversity of SydneyNSWAustralia Dermatology Research Laboratories Blackburn BuildingMelanoma and Skin Cancer Research InstituteSydney Cancer CentreUniversity of SydneyNSWAustralia Dermatology Research Laboratories Blackburn BuildingMelanoma and Skin Cancer Research InstituteSydney Cancer CentreUniversity of SydneyNSWAustralia

＜正＞Non-melanoma skin cancer （NmSC） is the most common human cancer worldwide. In Australia, NmSC is three times as common as all other cancer types combined. NmSC includes solar keratosis （SK）, a benign tumour, which can progress into the malignant squamous cell carcinoma （SCC）. The greatest risk factor for the development of SCC is exposure to ultraviolet radiation （UVR）;an early event in skin cancer development is UVR-induced mutations in p53. Little is known as to whether additional mutations to other molecules are necessary to cause SK to progress to SCC. Brm （Brahma） might be implicated in the progression of SK to SCC. Our group found via microarray analyses that Brm expression was significantly reduced in SCC relative to SK, suggesting a role for the molecule as a tumour suppressor. Brm is the core ATPase-containing component of the SWI/SNF chromatin-remodelling complex. Loss of Brm has been identified in -10% of primary lung adenocarcinomas, whilst knockout of Brm in mice leads to abnormalities in cell growth. Our aim is to determine the role of Brm in skin cancer progression via the manipulation of Brm expression in immortalised human keratinocytes （HaCaT cells）. This will be achieved using two methods: RNA-interference will be used to knock-down Brm mRNA expression in HaCaT cells, whilst a dominant-negative mutant of Brm will be used to competitively inhibit the function of wild-type Brm. Effects of Brm manipulation will be assayed using engineered human skin and Boyden chamber assays. We hypothesise that reduced functionality of Brm will lead to abnormal differentiation and stratification of the engineered epidermis, as well as enhancing invasion of the basement membrane.

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Chinese journal of Aeronautics 2020年第12期33卷 3360-3368页

作者： xiao HU Shuxing YANG School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of EducationBeijing 100081China Xi'an modern Control and Technology Institute Xi'an 710065China

The strap-down seeker,which combines the seeker's and the onboard gyro's measurements to obtain the target information,has been extensively applied by spinning *** response delay of the strap-down seeker,a novel factor that could result in crosscoupling between the acceleration commands in the pitch and yaw channels and subsequently cause the significant deterioration in dynamic stability of the spinning missile equipped with a rate loop,is noted in this *** sufficient and necessary stability conditions are also analytically established based on the system equation with complex coefficient,which are further verified by numerical *** could be indicated that the response delay of the strap-down seeker will greatly deteriorate the dynamic stability of the whole guidance system designed by the conventional *** is also noticed from analysis that the stable region of the combined guidance coefficient is shrunken significantly with the increase of the spinning rate.

关键词： Coning motion Dynamic stability Proportional guidance system Spinning missiles Strap-down seeker

In vitro Transient Expression System of Latex C-serum was used for Analysis of Hevein Promoter in Response to Abscisic Acid in Hevea brasiliensis

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journal of Integrative Plant Biology 2008年第3期50卷 338-344页

作者： xiao-Wen Fei xiao-Dong Deng Institute of Tropical Bioscience and Biotechnology Chinese Agricultural Academy for Tropical Crops Haikou 571101 China Department of Biochemistry Hainan Medical College Haikou 571101 China

Hevein has been found to be an essential element in coagulation of rubber particles in latex of rubber trees. In a previous study, we cloned a 1 241-bp fragment of a 5＇ upstream region of the hevein gene by genome walking. This fragment was analyzed by a 5＇ end nested deletion method in the present study, fused with a uidA （gus） gene to produce a series of tested constructs, which were transferred into C-serum of latex and the Gus activities were detected. Results showed that the fragment from -749 to -292 was sufficient for expression of gus gene in latex, and the fragment from -292 to -168 was crucial in response to abscisic acid inducement. In a transient transgenic test of rubber leaf with particle bombardment, construct Hev749 conferred gus-specific expression in veins, in which the latex tubes mainly distributed. This implies that the fragment from -749 to -292 was laticiferous-specific.

关键词： abscisic acid gus (beta-glucuronidase) gene hevein promoter rubber tree (Hevea brasiliensis)