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On the basics of briefly summarizing the research and application presents of building coatings and nano-composite building coatings in domestic and overseas, we presented a creative approach of modified exterior and interior building latex coatings applying inorganic nano-powders and its compound, systematically studied the effect of factors such as nano-material's category、additive capacity、dispersing method on the behavior of exterior building coating's weathering resistance、scratch resistance、water resistance、alkaline resistance and on the behavior of interior building coating's restraining bacterium、degrading all kinds of bad organic matter,and triumphantly developed nano-composite building latex coating.

本文在简要叙述国内外建筑涂料和纳米复合建筑涂料的应用研究现状的基础上,提出了使用无机纳米粉体及其复合材料改性建筑外墙乳胶漆的创新思路,系统地研究了纳米粉体材料的种类、添加量、分散方式等因素对外墙乳胶漆耐候性、耐洗刷性、耐水耐碱性等性能的影响,以及这些因素对内墙乳胶漆抗菌杀菌、降解有害有机物等性能的影响,成功地开发了纳米改性建筑外墙和内墙乳胶漆产品。

This thesis starts the synthesis and research of compounds with active biologic quality by using adenine as the basic material.

本论文以腺嘌呤为基本原料,开展了生物活性化合物的合成与研究。

Therefore, how to increase the air permeability and smoothness of the filter material, and to reduce the dust adhesiveness and running resistance, has become a research subject.

因此,在保证滤料达到较高的过滤精度情况下,如何提高滤料的透气度及提高表面光洁程度,减少粉尘附着,降低运行阻力是滤料生产厂首先应研究的课题。

According to the usage function and application characteristics of HBSPC, combined on test of this research and related specification,we present the technique request of original material for the HBSPC, it is the main technique way to raise concrete strength and durability by making use of different species, different amount and admix of quality to cipate with same quantity or the super quantity replace parts of cements in the concrete.

根据HBSPC的使用性能、应用特点,结合试验研究及相关规范,提出HBSPC用原材料的技术要求,明确了利用不同品种、不同质量的掺合料等量或超量取代混凝土中的部分水泥,是提高混凝土强度和耐久性的主要技术途径。

With economic development, the rock material is widely applied in the water conservation、 resources mining、 the civil construction 、 the railway and so on, a lot of problem about rocks urgently is demanded to solve, so there are very important theory and realistic meanings to thoroughly research its nature、 concerning and destroying mechanism,Due to natural function, massive joint and crack with rock, though the scale of these is small, it changes mechanics nature of rock greatly and reduces deforms mould and intensity parameter, and makes it presenting aeolotropy .

随着我国经济建设的发展,岩石材料被广泛应用于水利、资源开采、土木建筑、铁路等领域,与此同时出现许多岩石方面迫切需要解决的问题,所以对其性质、本构关系、破坏机理的深入研究有重要的理论意义和现实意义。由于天然作用,岩石内部存在大量的节理和裂隙,虽然这些裂隙的规模不大,但裂隙的存在大大地改变了岩体的力学性质,使其变形模量及强度参数降低,且使岩体的力学性质呈各向异性。

Damage mechanics analysises aeolotropy from joint、 crack within rock, offers new thinking for research of the joint rock, superiority to solving damage and destroy of rock as brittle material.

损伤力学从岩石内部的节理、裂隙着手,分析其各向异性,为节理岩体的研究提供新思路,对于解决岩石这类脆性材料损伤破坏具有明显的优势。

Modern chemistry has already no longer to be a dull impression on somebody, and it has already included such research as electronics, material studying, science of heredity, aerography and Chaos theory, etc.

现代化学已不再给人平淡无奇的印象,它已跨足电子学、材料学、遗传学、气侯学以及混沌理论等研究领域。

Akihito by a high level of scientific research personnel and experienced technicians, which consists of all imported material, with large mold, with production of large composite sandwich panel technology and capabilities.

明仁公司由高水平的科研人员和经验丰富的技师所组成,全部采用进口材料,拥有大型模具,具有生产大型复合材料夹层板的技术和能力。

On the presentation of Mn-P fixation, this paper reviews the latest advances in recent 10 years and concentrates on the mechanism of phosphorus fixation in acid soils. In addition, it brakes through the classical inorganic P fractionation in to Fe-P, Al-P, O-P and Ca-Pin the traditional P classification and considers Mn-P as one of the main phosphorus fixation modes in latosols, cultivated from the parent basalt material. Furthermore, fixation of P by Fe, Al, Mn is compared, and differentiation from chemical availability and bioavailability of P discussed. Based on the above, this paper presents some alienable measures for enhancing P utilization efficiency and postulates pivotal future research directions in the field of P fixation.

本文以Mn-P的提出为出发点,论述了近10年来对酸性土壤固磷机理研究的新进展,突破了常规P素形态分级研究中分为Fe-P,Al-P,O-P和Ca-P等无机磷测定的经典分级,认为玄武岩母质砖红壤中的Mn-P是P素固定的主要形式之一,进而比较了Fe、Al、Mn对P固定作用,并从P的化学有效性与生物有效性差异等方面进行了比较全面的论述,提出了减少P素固定提高磷肥利用率的措施及今后的重点研究方向。

BACKGROUND: The selection and development of materials for reconstructing ureteric defect is a hotspot in tissue engineering research, while, human amnion may be a potential ideal natural material.

背景:输尿管等尿路重建材料的选择和开发是目前组织工程学研究的热点,人羊膜是一潜在的理想天然材料。

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