The cave - dwellings in qingyang is nearly at the edge of life - and - death situation with the urban growth these years . the wind that the farmers constructed houses to replace the cave dwellings is blowing more and more seriously day after day . the cave dwellings which embody a kind of combination between people and nature are deserted one after another 近年来，在不断的城镇增长过程中，庆阳传统窑洞民居已经面临着生死之劫， ‘弃窑建房’之风越刮越强，体现‘天人合一’的窑洞居住形式纷纷被废弃，取而代之的却是千篇一律呆板的混凝土建筑在平整的田地上星罗棋布。
The green island reclamation will produce about 186 hectares of land ( including some 10 hectares already formed under the belcher bay link project ) on the north of kennedy town for residential development and strategic road links as well as provision of open spaces including waterfront promenades and an urban fringe park 青洲填海工程将在坚尼地城北面填造约186公顷土地(包括约十公顷在卑路乍湾连接路工程下已平整的土地) ，供住宅发展及兴建重要连接路，以及提供游憩用地，包括海滨长廊及市镇边缘地区公园。
The quality of buffer layer and thin films was analyzed by afm , xrd , rheed and xps respectively . the effect of the experimental parameters such as carbonization time , working pressure , c source gas flow rate , carbonization temperature , different carbonization gas and substrate on the carbonization process was studied firstly . it was observed that the size of particles was increased with the increase of carbonization time and the rms was opposite , but the trend was reduced while the carbonization time was long enough ; the size of particles was increased with the increase of working pressure too , and choosing a proper working pressure could get a smooth surface ; the size of particles was unobviously changed while the gas flow rate was low , but it was notability increased with the increase of gas flow rate while the gas flow rate was high enough , and a smooth surface could be also obtained by choosing a proper gas flow rate ; with the increase of carbonization temperature , the size of particles was increased , the rms is decreased and a good single - crystalline carbonization layer could be obtained , but a rough surface was formed at a excessive high temperature ; the rms of 对于碳化工艺,侧重研究了碳化时间、反应室气压、 c源气体的流量、碳化温度以及不同种类的c源气体、基片取向等因素对碳化层质量的影响,研究结果表明:随着碳化时间的增长,碳化层的晶粒尺寸随之变大,表面粗糙度随之降低,但当碳化到一定时间之后,碳化反应减缓,碳化层的晶粒尺寸以及表面粗糙度的变化幅度变小;碳化层的晶粒尺寸随反应室气压的升高而变大,适中的反应室气压可得到表面比较平整的碳化层;在c源气体的流量相对较小时,碳化层的晶粒尺寸随气体流量的变化不明显,但当气体流量增大到一定程度时,碳化层的晶粒尺寸随气体流量的增大而明显变大,同时,适中的气体流量得到的碳化层表面粗糙度较低;碳化温度较低时,碳化层的晶粒取向不明显,随着碳化温度的升高,碳化层的晶粒尺寸明显变大,且有微弱的单晶取向出现,但取向较差,同时,适中的碳化温度可得到表面平整的碳化层;相比于c _ 2h _ 2 ,以ch _ 4作为c源气体时得到的碳化层表面平整得多;比起si ( 100 ) ,选用si ( 111 )作为基片生长的碳化层的晶粒取向一致性明显更好。
The standard job interviewing attire for men is a conservative dark navy or gray two - piece business suit ( of natural fibers , such as wool , if possible ) , a white long - sleeved button - down dress shirt , a conservative silk tie ( that matches the colors in your suit ) , and nicely polished dress shoes 如果没有现成的正装，或者公司风格并没有那么正式，也可以穿比较保守的休闲外套（不要选格子或比较狂野的图案，最好选深色的） ，下穿熨烫平整的正装松身裤，里面一件长袖扣结领衬衫，颜色保守的丝质领带，擦的光亮的正装鞋。
If you do not own a suit , or the company is a bit more informal , then you should wear a conservative sports coat ( no plaids or wild patterns and preferably a dark color ) , nicely pressed dress slacks , a white long - sleeved button - down shirt , a conservative silk tie , and nicely polished dress shoes 如果没有现成的正装，或者公司风格并没有那么正式，也可以穿比较保守的休闲外套（不要选格子或比较狂野的图案，最好选深色的） ，下穿熨烫平整的正装松身裤，里面一件长袖扣结领衬衫，颜色保守的丝质领带，擦的光亮的正装鞋。
Zbd model whiteness measurement meter is mainly applicable to measurement of the whiteness of colourless even surface objects and powder , such as paper , pulp , ceramics , enamel , plastics , enamel , plastics , various fiber and fabric , wheat flour , talcum powed , starch , coating and chemicals etc . it canalso measure comparatively accurately the fluorescent whiteness of the objects with fluorescentbrighterner Zbd型白度测定仪主要用于测量非彩色表面平整的物体及粉末的?白度? ,如纸张,纸浆,陶瓷,搪瓷,塑料,个种织维及其织品,面粉,滑石粉,淀粉,涂料及化工产品等,对于添加荧光增白剂的物品,本机也能比较准确的测量其?荧光白度? 。
In our daily life , a plane awaiting measurement is not always an absolutely level plane . if the homography between the image and the whole world plane is only decided by the featured object which occupies small proportion of the plane awaiting measurement , the results of measurement will be imprecise 现实生活中，待测平面往往不是绝对平整的平面，如果仅通过在待测平面中占很小比例的特征标志物来确定整个世界平面到图象平面的对应关系，那么所得到的测量结果会有很大的误差。
First , glass slides having been rinsed will be treated with nh3h2o , aminosilane and aldehyde . second , the quality of pretreatment surface of glass slides can be tested through methods of fluorescence and afm microscope . in the end , the characteristic of probe immobile ratio for oligonucleotide on glass surface is obtained through researching the internal relation of these two methods 实验选用表面平整的德国玻片，将清洗好的玻片分别进行羟基化、氨基化、醛基化，采用荧光法和原子力显微镜法分别检测玻片表面预处理质量，研究两种检测方法之间的内在联系，从而确定表征玻片表面寡核苷酸探针固定率的方法。
Furthermore , the growth and the study of self - organized quantum dots structures become more and more important recently , and the application of self - organization technique become wider and wider in this thesis , we address the theory of film growth and the growth technique firstly more , the ways and characteristics of surface detection are prescribed we mainly report the growth process , results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd , in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures , including the substrate cleaning , nitridation , the growth of buffer and the growth of gan and ain epilayer , is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover , we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature , we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 ) 本论文主要论述了在espd - u装置上，采用电子回旋共振等离子体增强mocvd ( ecr - pamocvd )方法，在蓝宝石衬底上通过s - k模式自组装生长gan aln量子点结构的生长工艺、结果及讨论。而重点分析了自组装生长量子点之前的aln外延层生长工艺，包括衬底清洗、氮化、缓冲层的生长和gan 、 aln外延层的生长；通过高能电子衍射、 x射线衍射和原子力显微镜测试，并且对这些测试结果进行了详细的比较研究，得出了较优化的工艺条件，生长出了晶质较好、表面较平整的aln外延层；进而采用s - k模式自组装生长了gan aln量子点结构。由于实验装置加热炉温度的限制，我们没有能够生长出原子级平滑的aln外延层表面，因而没能够生长出密度比较大和直径比较小的量子点。
