Metallophalocyanines ( mpcs ) are a kind of centrosymmetric planar organo - metallic molecules with an extensively delocalized two dimensional conjugated - electron system which show a relatively large third order optical nonlmearity , varying upon central metal atom substitution and other factors . other interesting properties of this molecule and many of its derivative products are their versatility , architectural flexibility and high environmental stability , which are very important requirements to implement photo - electronic applications 因其骨架结构特征和可通过选择中心离子、轴向配体和在酞菁环上引入功能性取代基等方法进行分子筛选与组装得到具有特殊的物理化学性质和光、电、催化等功能的材料，而引起化学家和材料学家的浓厚兴趣。
Moreover , the density of nano - hexa - ferrites was reduced , so they are very easily to be applied . the purpose of this paper is to synthesize nano - hexa - ferrites . comparision with normal materials , nano - materials have special performance because of their special surface effect , volume effect , and quantum effect 纳米粒子由于具有特殊的表面效应、体积效应、量子隧道效应，表现出与常规材料不同的物理化学性质，对纳米吸波材料而言，其具有极好的吸波特性，同时具备吸波频带宽、兼容性好、质量轻和厚度薄等特点。
Nanoparticles and nanocluster materials are a new class of advanced materials exhibiting unique chemical and physical properties compared to those of their bulk materials . y2o3 : eu and gd2o3 : eu are efficient red - emission phosphor . recent studies show that they have significant promise in the field of luminescent materials 纳米材料由于其介观效应而表现出不同于常规体材料的独特物理化学性质，因而对纳米材料的合成和性质研究已经成为材料科学、物理学以及化学学科的前沿。
According to climate and geography character in high - cold area , by indoor trial , the paper researches the material component impact on the physical and chemical property and presents reasonable component mixture ratio of the ecological material and analyses the aggregates , drought resistance and fertilizer effect of the material 针对川西高寒地区的气候特征、地理地质环境特点，通过室内试验的方法，研究了生态基材组分构成及其配比对生态基材物理化学性质的影响，重点分析了生态基材的团粒结构、抗旱性、肥效及其和草种藕合生长关系。
Cubic boron nitride ( c - bn ) thin films have significant and potential technological application prospect in cutting tools , electronic and optical devices , etc . because c - bn possesses excellent physical and chemical properties , such as ultrahigh hardness only inferior to diamond , inertness against oxidation at high temperature , uneasy reaction with iron group metal , as well as the possibility of using as n - and p - type doped semiconductors 立方氮化硼( c - bn )具有优异的物理化学性质,如仅次于金刚石的硬度、高温下强的抗氧化能力、不易与铁族金属反应、可n型掺杂也可p型掺杂成为半导体等,立方氮化硼( c - bn )薄膜在切削刀具、电子和光学器件等方面有着潜在的重要应用前景。
The dispersibility as well as seepage distortion and salt transference under long - term seepage condition of soil samples obtained from the clay core wall in xijiao and sanping reservoirs were studied by physical and chemical properties of soil and composition of clay mineral and the tests for identification of dispersive clay soils which included double - hydrometer test , pinhole test , crumb test , tests to defermine salt content of pore water and percentage of exchangeable sodium 摘要应用碎块、针孔、双比重计、孔隙水可溶盐和交换性钠百分比等五种试验方法，结合物理化学性质和矿物成分分析，对西郊、三坪两水库大坝心墙土样进行了多种方案的分散性试验及长期渗流条件下的渗透变形试验和盐分运移试验。
Nano - materials show broad application due to its unique physical and chemical characteristics in the field of tribology , and become potential lubricating oil additives . despite the present research still in the initial stage , many problems requir to be solved , however , lots of experimental results indicate that nano - materials possess the charateristics of reduing wear , antiwear and extreme pressure resistance 纳米材料由于独特的物理化学性质，在摩擦学领域显示了广阔的应用前景，成为具有巨大潜力的润滑油添加剂。尽管目前的研究还处在初期阶段，许多问题有待解决，但大量的实验结果已表明纳米材料可以作为润滑油添加剂而起到减摩、抗磨和抗极压作用。
The data indicated that chemical and physical characters of soil in different vegetation types which in same climate type have some difference . that reflected chemical and physical characters of soil not only have relation with soil parent material , climate , physical chemical characters of chemical elements itself , but also with vegetation types 数据表明，在同一气候条件下，所覆盖植被类型不同，土壤理化性质也有差异，反映了土壤理化性质除了与其成土母岩、气候和化学元素自身物理化学性质有密切关系外，植被类型的作用不可忽视。
It is considered that pretreatment could improve the physical and chemical of ofmsw characteristics , such as solubility , acidity , alkalinity , and biodegradability , and accordingly increase soluble chemical demand ( cod ) and volatile fatty acid ( vfa ) , enhancing biogas yield , reducing hydraulic retention time ( hrt ) , optimizing anaerobic process and releasing post - treatment 研究认为，通过溶胞处理能够改善有机垃圾的物理化学性质如发酵物料的溶解度、酸碱度等，提高微生物对难降解有机物的分解，增加可溶性cod和挥发性酸的浓度，优化发酵细菌的代谢途径以及产物的组成等，从而增加生物气产量，缩短水力停留时间，强化厌氧发酵过程，减轻了后续处理的负担。
After further purifing the isoloated bacteria , we classified and characterized them , according to their individual form , physiological and biochemical to characterize , characterize to bacteria genus . calculated the total of aerobic bacteria in soil of each senson , the total of bacteria of degrading omethoate , as well as the percentage of each degradation bacteria genus , and measured the physico chemical nature of each seasonal soil sample 将分离到的菌株进一步纯化后，按其个体形态、生理生化特征，进行分类鉴定，鉴定到菌属；计算出各季节土壤中的细菌总数、降解有机磷农药氧乐果的细菌总数以及各降解菌属的百分比，测出各季节土壤样品的物理化学性质。
