高校科研管理队伍的素质与合理构成

随着科学技术的迅猛发展,改革开放的不断深化,跨学科、多专业的科研项目日益增多,这使得科研管理工作的复杂性不断增加;要求科研管理的内容、手段及方法必须与之相适应。科研管理由原来的经验型转变为科学化和现代化管理。从而也就决定了高校的科研管理不是一般的行政管理,它是一项涉及面广、触及问题深、政策性强的科研业务管理工作。

论“十一五”航空工业档案工作人才队伍的建设及合理构成

针对“十一五”时期，档案信息化的大趋势和航空档案工作的实际情况，从明确档案人才队伍应具备的素质出发，论述了以人为本建设档案人才队伍的有效途径，最后阐述了合理的档案人才队伍构成，说明唯有如此才能使有限的人才发挥最大的整效用。

空间环境的表层结构——材料的合理构成

随着材料工业和结构科学的迅猛发展,近代建筑倾向于通过空间的表层结构展现材料的质地美和形态美,并通过不同材料合理构成形成空间界面,最终体现空间意义。这里的“合理构成”有两个层面的含义:第一层面是其合理性,即充分利用材料的力学性能,有效而经济地组织材料,用以抵抗重力、荷载或其它力的作用,形成稳定牢固的建筑空间。第二层面是其构成性,要使材料集聚的结构形态在营造空间,表达材料肌理的同时,富有秩序感、韵律感、节奏感,并在空间轮廓。

高层建筑结构合理构成与高效率结构设计研究

当前,在社会快速发展的新形势下,建筑功能日益多样化,建筑用地越来越紧张,在这种情况下,高层建筑发展迅速。与普通建筑物相比,高层建筑的结构设计更加困难。尤其是,当前新的设计计算概念的发展和高强度材料的发展给高层结构的设计带来了新的挑战。高层建筑系统必须承受更大的垂直载荷,风载荷和地震力等,并且建筑物高度越高,风载荷和地震力就越大。因此,有必要把握高层建筑设计的要点,对高层建筑设计存在的问题进行深入分析,积极采取有效措施加以解决。

语言实验室的合理构成与选型

本文旨在提供有关院校在选购语言实验室设备时，能从实际出发，根据自身的需求，抓住关键要点，量力而行。

试论人才群理想构成的三要素

在纷繁复杂的社会生活中,任何一件社会大事,都不是凭一人之力所能完成的。即使是非常杰出的人才,也不能独臂撑大厦。只有在合理构成的人才群中,才能显示其非凡的才干,成就一番事业。这应该说是人才学中的一个普遍原则。纵观古往今来,许多人才群体构成的优劣状况,为我们提示了人才群合理构成的一些基本要素:

监理服务价格合理化与行业协会的新职能

提出了监理服务价格合理化包括价格构成合理化、价格水平合理化和价格合理化的形成机制三个方面。阐述了监理价格合理构成因素、价格水平变化关系;分析对比了计价方式和计价基础;探讨了监理服务价格的形成和业主支付意愿因素;指出了合理价格形成机制所需的条件和效应以及行业协会的协调功能。

浅谈房地产开发公司成本的构成

房地产开发企业资金占用量大，开发周期长，且开发成本在整个建设期占很大的比重，房地产企业只有了解其构成且将其成本降低至房地产行业平均水平之下，与其他房地产公司拉开距离才有可能具有竞争优势，实现成本最小化，利润最大化。各家成本归类各不相同，本人根据实际工作，归纳整理了相关内容，以供参考。

转变经济增长方式的几点思考

转变经济增长方式的几点思考程剑鸣，何建春推进经济增长方式的转变，是中央经济工作会议确定的“九五”期间经济工作指导方针。十几年来我国经济增长速度快，但生产要素消耗和浪费十分严重，投入产出率低下；世界经济发展模式正从总量增长型转向质量效益型，增长速度已不...

Hydrothermal synthesis, characterization and optical properties of La_2Sn_2O_7:Eu^(3+) micro-octahedra

Pyrochlore structure La2Sn2O7：Eu3＋ microcrystals with uniform octahedron shape were successfully synthesized via a hydrothermal route at 180 °C for 36 h. The crystal structure, particle size, morphologies, and optical properties of the as-synthesized products were investigated by XRD, TEM, SEM, EDS, FT-IR, Raman spectroscopy and PL. The effects of pH of precursor solution, precursor concentration, reaction temperature, and time were investigated. The results reveal that pH of the precursor solution not only plays an important role in determining the phase of the as-synthesized products, but also has a significant influence on the morphologies of the samples. High-quality and uniform octahedrons with an average size of about 700 nm could be easily obtained at the pH value of 12. The possible formation mechanism of octahedral-like La2Sn2O7：Eu3＋ microcrystals was briefly proposed. The photoluminescence spectra show that La2Sn2O7：Eu3＋ micro-octahedra display stronger emission in the range of 582-592 nm compared with the samples with other shapes.

架起科技与经济结合的桥梁——浅谈国营农场科委在科技成果转化中的作用

国营农场要实现科技成果迅速有效地转化为现实生产力,必须在经济和科技之间架起促进科技成果转化的桥梁,它的完善程度和功能如何,在很大程度上决定着科委工作和经济工作结合的优劣。笔者认为,这个桥梁整体结构的合理构成,即农场科委应具备的功能,有五个方面: (一)科委既是制定转化政策的机构,又是指导、管理科技成果应用的机构、科技贸易管理的机构、专利管理机构。

Modifying the acidity of H-MOR and its catalytic carbonylation of dimethyl ether

Among the reactions catalyzed by zeolites there are some that exhibit high selectivity due to the spatial confinement effect of the zeolite framework.Tailoring the acidity,particularly the distribution and location of the Bronsted acid sites in the zeolite is effective for making it a better catalyst for these reactions.We prepared a series of H-mordenite（H-MOR） samples by varying the composition of the sol-gel,using different structure directing agents and post-treatment.NH3-TPD and IR characterization of adsorbed pyridine were employed to determine the amount of Bronsted acid sites in the 8-membered ring and 12-membered ring channels.It was shown that controlled synthesis was a promising approach to improve the concentration of Bronsted acid sites in MOR,even with a low Al content.Using an appropriate composition of Si and Al in the sol-gel favored a higher proportion of Bronsted acid sites in the 8-membered ring channels.HMI as a structure-direct agent gave an obvious enrichment of Bronsted acid sites in the 8-membered ring.Carbonylation of dimethyl ether was used as a probe reaction to examine the modification of the acid properties,especially the Bronsted acid sites in the 8-membered ring channels.There was a linear relationship between methyl acetate formation and the number of Bronsted acid sites in the 8-membered ring channels,demonstrating the successful modification of acid properties.Our results provide information for the rational design and modification of zeolites with spatial constraints.

Syntheses and calculation of( E)-4-chloro-4'-ethoxystilbene and( E)-4,4'-dichlorostilbene

（E） -4-chloro-4＇ -ethoxystilbene （2a） and （E） -4, 4＇ - dichlorostilbene （2b） were synthesized by the Witting-Homer reaction. The crystals of 2a and 2b were prepared through solvent evaporation and characterized by the single-crystal X- ray diffraction. Molecular structure analysis confirms the E- configuration of C=C bond. The crystal of 2a reveals an orthorhombic and space group Pna21 structure while 2b shows a monoclinic and space group P21/c structure. The electronic structures of 2a and 2b were optimized at B3LYP/6-311 ＋ ＋ G （d, p） level. The Hirshfeld surface and fingerprint plot indicate close O-H and C1-H contacts and π-π stacking in 2a and 2b. Molecular electrostatic potential shows that the O and C1 atoms of 2a and C1 atoms of 2b have the minimum energies and they are more likely to be attacked by electrophiles in reaction. Frontier molecular orbitals analysis demonstrates that the △ELuMO_HOMO of 2a and 2b are 3.85 and 3.91 eV, respectively.

Nanometallocarbosilanes： Synthesis, Physicochemical Properties and Structure

Highly efficient synthesis methods have been developed and characteristics of nanometallocarbosilanes molecular structure were studied by the research team of GNIIChTEOS （State Research Institute for Chemistry and Technology of Organoelement Compounds）. Nanometallocarbosilanes were synthesized by thermal co-condensation of oligocarbosilanes and alkyl amides of refractory metals. Initial, intermediate and final products of side reactions were characterized by 1H, 13C, 29Si NMR （nuclear magnetic resonance）, IR （infra-red） spectroscopy, GPC （gel-penetrating chromatography）, TGA （thermal gravimetric analysis）, TEM （transmission electron microscopy）, SEM （scanning electron microscopy）, RES （X-ray phase analysis） and elemental analysis. The proposed synthesis method of nanometallocarbosilanes was lbund to produce fusable soluble organosilicon oligomers with homogeneous distribution of nanoscale （10-20 nm） metal particles in the oligomer matrix. A computational model of the group and elemental composition of nanometallocarbosilanes was developed; it was shown that they are molecular globules of near-spherical shape and rigid polycyclic structure. Thermochemical treatment of nanometallocarbosilanes leads to SiC-nanoceramics （a high yield of up to 75-80 mass%） modified by metal nanoparticles （20-30 nm） contributing to its stabilization. The application of preceramic oxygen-free nanometallocarbosilanes will make it possible to advance in solving the problem of ceramic composite materials with long-term resistance at temperatures above 1,500 ℃ in oxidizing environments.

基于非线性鲁棒性的网壳结构全寿命造价分析

为了寻找网壳结构合理的总造价及初始造价与总造价的比例,基于结构鲁棒性H∞理论,引入独立分布中心极限定理及结构全寿命周期概念,给出基于结构非线性鲁棒性的全寿命周期造价算法,进而以全寿命周期造价为评价标准,分析结构全寿命周期造价的变化特性,通过对多个网壳结构的实例计算,得到结构的合理造价组成及网壳结构形式.结果表明,以全寿命周期造价为目标,网壳结构存在最低造价,同时初始造价与总造价比约为45%;基于非线性鲁棒性分析,凯威特型网壳的经济性优于施威德勒型网壳和联方型网壳.

关于我国定价成本监审的相关研究

成本监审是提高政府定价科学性的重要制度。定价成本的确定关系着价格制定的基础是否可靠、水平是否合理,成本监审工作是否有效。因此,本文对定价成本的构成以及监审方法进行研究。本文研究认为,定价成本由现行合理成本和合理成本预期两部分构成。现行合理成本的监审是对监审时段经营者成本,经合法性以及成本构成、核算方法和成本水平的合理性审核后,加权平均核定的定价成本。合理成本预期不仅需要历史资料和数据,还需要结合未来发展趋势及相关依据进行确定。

Evolution of microstructure and high temperature tensile properties of as-extruded Ti Bw reinforced near-α titanium matrix composite subjected to heat treatments

The Ti Bw reinforced near-α titanium matrix composite（Ti-5.8 Al-3.4 Zr-4.0 Sn-0.4 Mo-0.4 Nb-0.4 Si-0.06 C） was successfully synthesized by powder metallurgy and hot extrusion route. The effects of solution and aging temperature on the microstructure and high temperature tensile properties of the composite were investigated. The results revealed that the fine transformed β phase can be obtained by the solution treatment at β phase region and aging treatment, no other precipitates were observed. The α2 phase（Ti3 Al） can be acquired when the solution treated at α＋β phase region followed by aging treatment. With increasing the aging temperature from 500 to 700℃ for 5 h, the size of α2 precipitates increases from about 5 to about 30 nm. The Ti Bw are stable without any interfacial reaction during the heat treatments. The high temperature tensile properties show that the composite performed by solution and aging treatment exhibits good strengthening effects. With increasing the aging temperature from 500 to 700℃, the strength of the composite increases at the expense of elongation due to the increment of α2 precipitates.The strength of the composite at 600℃ increases by 17% to 986 MPa after 1000℃/2 h/AC and 700℃/5 h/AC heat treatment.