生长谱
- 与 生长谱 相关的网络例句 [注:此内容来源于网络,仅供参考]
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X-ray diffraction is one of the most common and efficient ways to measure a superlattice structure. This dissertation displays the detail results for characterization of Ge〓Si〓/Si superlattices by x-ray diffraction (including x-ray small angle diffraction and double crystal diffraction). It was found, when the growth temperature is lower, the intensities of xray small angle diffraction peaks are modulated by a periodical function, which indicates that both sets of interfaces of the superlattice is highly flat; when the growth temperature is higher, the diffraction peak intensities are simply decay with the increase of diffraction vector, which indicates that one set of interfaces is highly flat but another is not; when the growth temperature is very high, the diffraction peaks are reduced more rapidly, which indicates that both sets of interfaces are not ideal.
本文详细介绍了用X-射线衍射(包括X-射线小角衍射和双晶衍射)方法对Ge〓Si〓/Si超晶格结构特性测试的结果,尤其是发现,当Ge〓Si〓/Si超晶格的生长温度较低时,X-射线小角衍射谱峰的强度随着衍射波矢的增加而周期性调制,表明超晶格的两套界面都十分平整;当生长温度较高时,Ge〓Si〓Si超晶格的X-射线小角衍射谱峰的强度随着衍射波矢呈简单的衰减变化,对应于超晶格内有一套界面不平整的情况;当生长温度进一步提高时,X-射线小角衍射峰明显减少,表明超晶格内两套界面都不理想。
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A water soluble polysaccharide was isolated and purified from the dry leaves of bamboo that grows in Hubei Province.
采用纸色谱和气相色谱法研究了从湖北恩施地区生长的箬竹叶中分离纯化的水溶性多糖的单糖组成。
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From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.
本文从地植物学的角度,运用植物生长相关因子法,对我国喜树资源的生态适宜区进行了划分,理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域;从群落生态学的角度,对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究;从种群生态学的角度,运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段,对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析;从个体生态学的角度,对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究;从保护生物学的角度,对野生喜树的濒危的内部因素和外部因素进行了探讨,并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测;从资源生态学的角度,对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究,并对喜树碱的提取工艺进行了探讨。
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It was found that there were some differences between the amplified bands of Liquidambar formosana which grew in the place of the altitudes from 100 m to 300 m and in the place of the higher altitudes from 400 m to 700 m, while there was no obvious difference among the amplified bands of Liquidambar formosana's samples (3 samples were from shade conditions and 3 from sunlight conditions) which were from the same altitude (710 m).
结果发现:生长於海拔100~300 m的枫香的扩增谱带与生长於高海拔(400~700 m)的略有差异,而在相同海拔(710 m)的3个阴性条件样品和3个阳性条件样品间,其扩增谱带没有明显差异。
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This paper determined the olfactory respones of Tetranychus viennensis to different plants odors with "Y" olfactometer and petri-dish, volatiles from leaves of different plants were absorbed with SPME and analyzed with GC-MS (gas chromatograph-mass spectrometer). At the same time, the effects of different host plants on the development of Tetranychus viennensis were determined by means of the leaf-dish rearing method , in addition, the contents of some chemicals in the leaves of different plants were also determined.
本文用"Y"形嗅觉仪法和培养皿法测试了山楂叶螨Tetranychus viennenis Zacher对不同植物气味物质的嗅觉反应,并利用固相微萃取SPME吸附、用气相色谱—质谱联用仪GC-MS(gas chromatograph-mass spectrometer)分析了不同植物叶片的挥发性物质成分:同时采用海绵水盘法饲养山楂叶螨,研究了不同植物对山楂叶螨生长发育的影响,并测定了不同植物叶片中一些生化物质的相对含量。
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Therefore, NAG7 gene was a nice candidate of tumor suppresser gene associated with NPC. The mechanism might be that the re-expression of NAG7 gene contributed to the change of gene expression profile and following the change of protein expression profile, then involved in the cell cycle and apoptotic regulation changed, and finally suppressed the NPC growth.
因此,NAG7基因作为鼻咽癌相关的抑瘤基因候选者,其作用机理可能是通过诱发基因表达谱的改变而引起蛋白质表达谱发生相应的改变,在一致性改变的功能分子的作用下,抑制细胞增殖,同时诱发细胞凋亡增加,从而发挥抑制鼻咽癌细胞生长的作用。
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And studied the organic components of the Ginkgo wood vinegar which was investigated with GC/MS in detail, and the effects of wood vinegar to bud bursting and seedling growth of crops.
另外,还采用气相色谱—质谱联用技术分析了副产品银杏木醋液的成分,研究了木醋液对作物种子发芽及其幼苗根茎生长的影响。
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The intensity ratio of TO and LO inMCT was observed to be different. Such difference was explained in terms of the different Ramangeometry arrangement.〓. The laser-induced micro-photoluminescence in the range of 1000~5000〓(1.34eV~1.83eV) was found for the first time in LPE MCT epilayer. The center of photoluminescence wasat 2750〓 or 1.62eV and the FWHM of luminescence was 2000〓 or 0.25eV. We assume thatthe photoluminescence is due to recombination of electron from an anion vacancy resonance levelto the top of valance. In addition, new Raman shift was observed at 750〓 in LPE MCTepitaxial film.〓. The laser-induced micro-photoluminescence with quasi-periodic structure was observed forthe first time at room temperature in one of MOVPE MCT epitaxial film samples. The range offluorescence was from 1.46eV to 2.21eV, i.e., 1.73eV above the conduction band edge.
2首次在LPE生长的碲镉汞外延薄膜的显微Raman谱中,在1000~5000〓范围发现了激光激发显微荧光,该荧光的发光范围换算为电子伏特标度为1.34eV~1.83eV,荧光的发光中心大约位于2750〓,即1.62eV,发光的半峰高宽约为2000〓或0.25eV;指出该显微荧光来源于碲镉汞薄膜中的阴性离子空位共振能级的激光激发发光;观察到了碲镉汞外延薄膜中一个新的Raman散射峰,位于750〓位置; 3首次在一块用MOVPE方法生长的〓Te外延薄膜的显微Raman谱中,发现了1.46eV至2.21eV范围并伴随有周期结构的显微荧光峰,该发光峰对应的能带中心位于〓Te材料导带底上方1.73eV,通过研究得出样品在1.46eV至2.21eV范围的显微荧光峰是由于改进 MOCVD 生长工艺,提高了碲镉汞外延薄膜的结构质量所致;通过分析指出该显微荧光来源于外延层中的阴性离子空位的共振能级发光。
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We have epitaxially grown ultrathin Pb and Co films on the Cu(111)surface bymolecular beam exitaxialgrowth technique,and studied in detail the growthand surface alloying of submonolayer Pb on Cu(111),the shift of Pb 5d core levelbinding energy on Cu(111),the surfactant-assisted epitaxial growth of Co on Cu(111)using Pb as a surfactant,and the spin exchange splitting of ultrathin Co films onCu(111)using synchron radiation photoemission spectra as well as Auger electronspectraand low energy electron diffraction.
利用分子束外延生长技术在单晶Cu(111)表面外延生长了超薄Pb和Co膜,并利用同步辐射光电子发射谱,结合俄歇谱和低能电子衍射,详细研究了超薄Pb在Cu(111)表面的生长、表面合金化,Cu(111)表面Pb的5d芯能级位移,以Pb作活性剂时Co膜的活化外延生长,以及超薄Co在Cu(111)表面的自旋交换劈裂,得到了一些有意义的结果。
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Work on mesoscopic superconducting films has demonstrated interesting new features associated with the interplay between fluxions and artifacts.
在超导材料方面,生长出具有国际一流水平的氧化物高温超导单晶;在铁基高温超导材料方面,获得最高的超导转变温度;在超导机理的研究方面,建立了一些行之有效的手段,如低温比热、隧道谱、角分辨光电子谱、红外光电导谱等等,利用这些重要手段获得了一些重要结果,如从比热角度提出欠掺杂氧化物超导体应该具有一个费米弧基态,利用高精度角分辨光电子谱测量第一次观察到115meV和150meV两个新的高能量精细结构。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?