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Some people introduce subphotosphere magnetic charges or dipole, which can fit magnetic field on the photosphere, then the separatrix and separator above and on the photosphere can be located, the comparison between their location and location of flare ribbon support the idea of magnetic reconnection. It is called Source Method. Some people extrapolate magnetic fields of photosphere to corona by some method, then use QSLs method to investigate the relations between flare ribbons and magnetic field topology. Some people study relations between flare ribbons and singular point on the plane above photosphere. Some people investigate magnetic topology by analyzing magnetic field of photosphere directly.
或者以观测的光球磁场为基础,来构造光球下的磁荷或磁偶极等光球下磁源,进而研究光球上的磁拓扑结构与耀斑的关系;或者利用各种外推方法将光球磁场进行外推,然后用准分隔层的方法来研究磁拓扑结构与耀斑的关系;或者利用势场模型外推光球磁场,然后研究光球之上平行于光球的某一平面的两维奇点与耀斑的关系;或者直接利用观测的光球矢量场来研究磁场拓扑。
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Modern approach methods of geography, ecology, quantitative analysis, expert integration, remote sensing image analysis and geographical information system were combined to reveal the matters in this paper. The eco-geographical background of the research area and the research work studied by other scholars were comprehensively expatiated. The temporal and spatial variation of precipitation and soil moisture, vegetation and soil distribution, and land use/land cover were compared as well. On the basis of foregoing analysis, the eco-geographical differentiation was discussed. According to principles and indicators, with extension engineering method and integrated analysis, the physical geography boundary between subhumid and semiarid areas were demarcated. By using remote sensing image analysis, wavelet analysis of the perennial precipitation and temperature, and the comparison of temporal and spatial variation of the desertification, this paper accounted for the regional response to global environmental change and suggested the dominant environmental problems.
本文采用了地理学与生态学相结合、定量分析与专家集成相结合、遥感图像解译和地理信息系统相结合的方法,对研究区的生态地理背景和已有研究工作进展情况给予了全面的分析和阐述;通过对区域水分条件(大气降水、土壤水分条件)、植被、土壤、土地利用/土地覆被状况等环境要素的时间与空间特征的对比分析,探讨了研究区内部生态地理特征的差异;在一定的原则指导下,通过建立指标体系,以可拓工程方法和模型为支撑,经过综合分析确定了研究区内半湿润、半干旱区界线划分方案;通过遥感图像解译、典型站点多年降水与温度的小波分析、土地沙漠化时空变化的对比分析等,说明了研究区域对全球变化的响应;表明了该区域所面临的主要环境问题。
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In this theory, we firstly introduce the basic theory of discrete wavelet transform and lifting scheme. Secondly, we adopt a fully pipelining VLSI architecture for lifting-based DWT. Hence, we can operate on higher working frequency. Besides, we merge a QCB-based DWT method to achieve the higher parallelism for JPEG 2000 encoding system. By changing the output timing of the DWT process, the internal tile memory size can be reduced by a factor of 4. Moreover, the architecture can efficiently perform shape-adaptive DWT and solve boundary extension and subsampling problems. Finally, according to the comparison results with other architectures, the efficiency of proposed architecture is proven.
在这篇论文中,首先我们介绍离散小波转换和提升式架构的基本理论,接下来我们改良提升式架构采用全管线化的硬体架构,因此我们可以操作在较高的工作频率,并且我们合并了以四个编码方块为基础的方式来使得JPEG 2000编码系统具有更高的平行度,藉著改变离散小波转换的输出时序,内部的记体体需求可以减少为原本的四分之一,接著此架构也可以有效地支援可适应形状的离散小波转换,同时解决了边界延伸和子取样的问题,最后根据与其他架构比较的结果,来说明所提出之离散小波转换架构的贡献。
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115 caprine right femurs were taken and created to simulate AO/33-A3 fracture. All fracture models were fixed by the right 5 hole LISS Plate, which treated differently by using unicortical or bicortical screws in the proximal end of the LISS plate. And then withdrawal force and torsional force were given on them to make comparison.
取115根新鲜羊右侧股骨,造成股骨远端AO分型33-A3型骨折,并均采用5孔右侧股骨远端LISS钢板予以固定,在骨折近端固定螺钉单双皮质不同分布状态下,分别作拔出和扭转的生物力学对比试验研究。
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After thecomplete genome extraction of the strain was performed, the genomic DNA was partiallydigested by restriction enzyme Sau3AⅠ, the DNA fragments from 1 to 5Kb was clonedinto prokaryote expression vector pET-28a-c, and transformed host bacteria. The resultsshowed that we succeeded in constructing the gene expression library of haemophilusparasuis serovar 5, which is fundamental for the study of advanced gene screening. Inaddition, primer design was performed based on haemophilus influenzae in this study. In addition, PCR was performed by using genomic DNA of haemophilus parasuisserovar 5 as the template. The results demonstrated that we obtained two neo-gene:23SrRNA gene(conserved gene belonging to the large-subunit of ribosome) and adenylatecyclase gene(encodes adenylate cyclase and participates in converting adenyl nucleosidetriphosphate to cyclic adenosine3",5"-monophosphate). Furthermore, the phylogeneticanalyses between the species was performed, and neighbor-joining tree was constructedbased on comparison of 23S rRNA gene sequences, so it was illuminated betweenHaemophilus parasuis and other species in molecular evolution relationship.
选择我国流行优势菌株副猪嗜血杆菌血清5型地方株为研究对象,提取细菌基因组DNA,用限制性内切酶Sau3AⅠ对基因组DNA进行部分酶切,回收大小为1~5Kb的DNA片段,将其连接入原核表达载体pET-28a-c,最后转化宿主菌,结果成功地构建了基因表达文库,为后续的基因筛选工作奠定基础;另外,本研究选择嗜血杆菌属的流感嗜血杆菌为参考对象进行引物的设计,以副猪嗜血杆菌血清5型地方菌株的基因组DNA为模板,进行PCR扩增反应,结果表明成功地获得两个新基因:23S rRNA基因(存在于核糖体大亚基中的保守性基因)和腺苷酸环化酶基因(负责将腺嘌呤核苷三磷酸转变为环腺苷酸),并进一步做了不同物种之间的分子系统发育分析,构建了基于23S rRNA基因的邻接法系统发育树,阐明了副猪嗜血杆菌与其它菌种的分子进化关系。
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There are experimental results as follows:(1) Eriophorum comosum Nees shows strong cold resistance in plasmalemma permeability research. The lethal temperature of Eriophorum comosum Nees is the lowest LT_(50 in comparison with another two plants and is lower than -11.5℃ in August 2005 and December 2005; Soluble protein content of each plant is rising before or after cold hardiness. By SDS-PAGE, Protein band is analysed. Band quantity of Eriophorum comosum Nees is the most and its band color is darkest.(2) Soluble sugar content of three plants after cold hardiness are higher than before cold hardiness, moreover soluble sugar content after cold hardiness shows a decline and there is a narrow range in Eriophorum comosum Nees; Free Proline accumulation is changed by cold stress, and cold resistance is relative to free Proline accumulation; chlorophyll content of both three plants, including chlorophyll a, chlorophyll b and chlorophyll a/b, show a decline tendency along with the descent of temperature. Cynodon dactylon is highly sensitive to cold stress.(3) The soil POD and urease activities' absolute value of Erioophorum comosum Nees and Pogonatherum panideumHack were more than that of Cynodon dactylon before or after low temperature stress, especially POD activities.
实验结果表明:(1)在膜透性的研究中,丛毛羊胡子草抗寒性最强,采用电导率法测得半致死温度LT_(50最低,丛毛羊胡子草抗寒锻炼前后半致死温度LT_(50均小于-11.5℃;在可溶性蛋白含量研究中,抗寒锻炼前后三种植物的可溶性蛋白含量均增加,同时采用SDS-PAGE法,通过对蛋白条带分析,以丛毛羊胡子草条带数最多且着色深;(2)在可溶性糖的研究中,三种植物经抗寒锻炼后叶片可溶性糖含量都比抗寒锻炼前高,且经过抗寒锻炼后三种植物可溶性糖均呈下降趋势,丛毛羊胡子草可溶性糖含量下降较小;从游离脯氨酸含量可知,低温的胁迫影响了植物叶片游离脯氨酸的含量变化,植物的抗寒性与游离脯氨酸有关;低温胁迫下三种植物叶绿素含量随着温度的下降,叶绿素含量、叶绿素a、叶绿素b和叶绿素a/b均呈下降趋势,狗牙根对低温胁迫最为敏感;(3)低温锻炼前后,丛毛羊胡子草和金发草的土壤过氧化物酶与脲酶活性的绝对值均大于狗牙根的,特别是过氧化物酶,说明丛毛羊胡子草和金发草的酶活性大于狗牙根的。
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CT images of the 6 UAs showed homogenous and low density in comparison with muscles. Of the 6 UAs, 2 (33%) were lobulate, 4 (67%) were regularly round or oval; 1 (17%) had bone septa, 2 (33%) had root resorption of the neighboring teeth, 3 (50%) had cortical perforation. All UAs showed well-circumscribed margins without soft tissue masses. Three UAs were examined by enhanced studies and showed mild to moderate enhancement of the wall. Of the 5 MAs, 3 (60%) showed low to intermediate density as compared with muscles, 2 (40%) showed homogenous and intermediate density; 3 (60%) had bone septa; 3 (60%) showed root resorption or destruction of the neighboring teeth. All 5 MAs were lobulate with cortical perforation, soft tissue masses, and ill-defined margins. All 3 MA5 examined by enhanced studies showed strong enhancement. CONCLUSIONS: SMAs are usually seen in middle-aged patients.
UA病变平扫时与肌肉相比内部都呈均匀低密度,其中4例(67%)呈较规整的圆形或椭圆形,2例(33%)呈分叶状,3例(50%)局部骨皮质有缺损,但未见软组织肿块形成,l例(17%)见不全骨性分隔,2例(33%)邻近牙根有吸收,行增强扫描的3例囊壁均呈轻中度的强化。5例MA的病灶都呈分叶状,且骨皮质均被穿破并有软组织肿块形成,边界不清,其中3例(60%)平扫时与肌肉相比呈等低混杂密度,2例(40%)呈较均匀等密度,3例(60%)可见不全的骨性分隔,3例(60%)见牙根的吸收或破坏,行增强扫描的3例都呈明显强化。
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Accurate analog power is to provide power, digital chip, amplifiers, microcontroller is the voltage required by A/D sampling data output voltage, and comparison, if there is A deviation is the limit, adjust output signal output and closure, alarm, The working process of the working status, manostat by SCM outputs drive LED display, Display circuit used to display the size of the output voltage of power.
准确说就是模拟电源提供各个芯片电源、数码管、放大器所需电压,单片机则通过A/D采样输出电压,与设定值进行比较,若有偏差则调整输出,越限则输出报警信号并截流;工作过程中,稳压电源的工作状态均由单片机输出驱动LED显示;显示电路用于显示电源输出电压的大小。
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To simplify the comparison of symmetrical triangular fuzzy numbers, through the analysis to the satisfactory degree function of fuzzy numbers presented by Tanak, a simple and convenient formula for comparing two symmetrical triangular fuzzy numbers is presented, and the limitation of the formula presented by Liu Xinwang is proved.
为简化正规三角模糊数的比较。通过分析Tanaka提出的模糊数比较的满意度函数,得到了2个正规三角模糊数比较的简便公式;指出了刘新旺提出的模糊数比较公式的局限性。
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Moreover we received no evidence that the abolition of capital punishment in other countries had in fact led to the consequences apprehended by our witnesses in this country; though it is fair to add that any comparison between Great Britain and most of these countries, with the exception of Belgium, is vitiated by the differences in social and industrial conditions and in density of population .
此外,我们没有收到任何证据表明其他国家废除死刑,实际上就导致了我们的证人们所认为的后果。
- 推荐网络例句
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。