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At last the paper realized the advantages and disadvantages of passive solar building and adnvanced some suggestions in future research. From another point, the paper logged the process of the building of the experimental equipment and the mounting of the measurement equipments that accumulated some operating experimence.Carrying experiments, calculating and analyzing the experimental data for more than 2 years, the paper gained some constructive conclusions. In winter the indoor air temperature and RH are lower than comfort criteria, but people feels very comfortable in the passive solar house. The thermo-circulation formed by Trombe wall play an important role in improving indoor air temperature and RH. Based on the analogy analysis theory, the natural convection heat transfer in the air gap can be treated as superposition of two natural convection heat transfer processes occurring over isolated isothermal vertical flat plate, in this case namely the massive wall and glazing. Two empirical formulas for Q and Nu are obtained. The investigation shows that the optimal time to open the damper should comply with the period that the thermo-circulation happens which can be controlled by thermal response characteristics of Trombe wall surface temperature and air temperature in the air gap.
经过两年多的实测和计算,根据传热学、流体力学、统计学等学科的基础理论,对大量数据进行整理归类、分析讨论,主要得到如下结论:(1)冬季,含有特朗贝墙体的被动式太阳房室内热湿环境较舒适性标准偏低,但人体感觉比较舒适,特朗贝墙体形成的热循环通风在调节室内温度和相对湿度方面起到很大的作用;(2)特朗贝墙体空气间层自然对流可以看作是两个等温独立大平板的自然对流换热过程的叠加,通过与大平板自然对流理论类比获得了计算热循环过程中对流换热量的经验公式;(3)特朗贝墙体通风口的启闭可以根据玻璃幕墙内壁面温度、蓄热墙体外壁面温度和空气间层进出口空气温度之间的关系来进行控制,从而有效地阻挡冬季冷循环的发生;(4)夏季,如没有有效的通风降温措施,被动式太阳房内会产生明显的过热。
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During this research, many persons become the object of study. Investigation is conducted with 200 Grade One senior school students who are from No.1 Middle School of GanZhou, Yudu Middle School and No.1 Middle School of Yichun. 50 excellent teachers and 9 experts. At the same time, I made a more meticulous analysis by making researches into the exam questions of Jiangxi Senior School Entrance Examination and particularly making researches into the chemistry exam of experimental zone in 2005. At last, I have found the scientific methods, techniques and artistry of creating items by making researches into more than one hundred and twenty papers what are from the whole countrys experimental and unexperimental zones in recent years.
在研究过程中,本人以江西省赣州一中、于都中学以及宜春一中2005级200名高一学生,2006年参加中考研讨会的部分省市骨干教师50名以及9名九年级化学内容专家为调查对象;同时以江西省中考化学试题特别是江西省课改实验区2005年中考化学试题为案例;对全国各省市课改实验区及部分非课改实验区的近三年来的一百二十多份试卷的分析,以发现试题命制的科学性、技巧性和艺术性等。
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PartⅢ: Normal liver regeneration after partial liver radiation: an experimental study onrats.Objective: To verify whether unirradiated normal liver has the ability to regenerateafter partial liver irradiation, and to investigate the timing of liver regeneration and the rolesof participated cytokines through an experimental study on rats.
第三部分:大鼠部分肝照射后正常肝脏再生的实验研究目的:通过对大鼠进行部分肝脏照射,检测未受照射的正常肝脏肝细胞是否出现再生现象,探讨再生的时间以及参与的细胞因子的作用。
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Based on the experimental data of the displacement of oil by water in the Liuchu Oilfield and other relevant experimental data, the calculation of univariant facies differentiation indexes indicates that the interference from porosity and permeability can not be eliminated.
在留楚油田沙一段储集层的水驱油实验和其他相关实验测定数据的基础上,进行单变量相分异指数的计算,结果表明孔隙度和渗透率对最终驱油效率的影响并不能通过分沉积微相来消除。
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With the support of a major research grant of Zhejiang Province (No. 001101027) and the Plan of Promoting Education of Excellence of Zhejiang University in the 21st Century, this dissertation is devoted to address the above problems and fabricate an L-band EDFA with low cost, high performance and technological innovation.First the mechanism of an erbium doped fiber amplifier is introduced. Various theoretical models based on classical rate propagation equations are summarized and compared for their applications. We use a modified numerical model based on the Giles model, which agrees with the experimental results well. This serves as the theoretical base for the whole thesis and will be used to optimize the characteristics of EDFAs. A novel method based on a map of noise figure and gain is proposed to analyze efficiently the dependence of the noise figure and gain for EDFAs on the EDF length and the pump power. The characteristics of various EDFAs are studied and compared.Secondly, some important parameters are introduced to describe the characteristics of EDFAs. The methods and the experimental setups for measuring the gain and noise figure of an EDFA are emphasized. We introduce how to measure the characteristics of each component of an EDFA, especially the gain and absorption coefficient of an erbium doped fiber.Thirdly, four types of simple and novel L-band EDFA structures with low noise, high gain and low gain ripple are proposed to satisfy the requirement of a DWDM system. They can be classified into two categories. In the first category, a single ASE pumping is served asa secondary pump. This category includes the following three types. Type: a new construction using a fiber Bragg grating in an unpumped EDF section at the input side. Type: a new structure of L-Band EDFA with two-stage pumps, which utilizes the forward ASE as a second pump.
本论文本着科技创新、服务于生产实践的精神,以设计价格低廉,性能优越、结构合理简单的L-band EDFA为目标,依托浙江省科技厅重大科学基金资助项目(001101027)和浙江大学振兴教育计划资助的全光网络的搭建—《光通信技术》课程实验建设项目,展开了如下工作:首先,介绍了掺铒光纤放大器的工作原理,归纳总结了基于速率方程基础的EDFA的各种理论模型,分析比较了各个模型的特点和适用场合,最终选择完善的Giles理论模型作为本论文分析设计EDFA的理论基础;针对实际实验条件提出了修正的EDFA模型的数值计算方法;创新地提出了增益—噪声系数全局分析法,直观有效地分析了EDFA的增益和噪声系数与掺铒光纤长度和泵浦功率的依赖关系,并对各种EDFA的性能作了全面的比较;第二,介绍了掺铒光纤放大器特性参数的定义与测量方法,重点介绍了噪声系数和增益系数的测量方法及实验装置;介绍了组成掺铒光纤放大器各组件的特性测量方法,重点介绍了测量掺铒光纤参数的方法和实验装置;第三,针对WDM系统对L-band EDFA谱平坦、低噪声、高增益的要求,我们创新地提出了四种不同的L-band EDFA结构,按设计思路可以分为两大类:一类是基于单抽运二级泵浦法,这一类包括在未泵浦掺铒光纤的输入端插入一根布拉格光纤光栅的两段L-band的EDFA的新结构;基于前向ASE光作为二级泵浦源推动下一级EDF工作的泵浦分配、两段级联L-band的EDFA的新结构;基于单根光纤光栅、泵浦分配、两段级联的EDFA;另一类则是基于同时应用前后向C-band ASE作二级泵浦源的双抽运法,如基于前后向ASE光作为二级泵浦源的三段级联L-band的EDFA的新结构。
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Based on the theories of rheology, Non-Newtonian Fluid Mechanics, petroleum chemistry, crystallography and pipeline technology etc. and sampling Huabei crudes, experimental indexes and programmes are drew out, integrating the oil properties and parameter analysis; in terms of the macro analysis of continuum mechanics, substantial experiments are conducted with HAAKE RS600 rotational rheometer and the rheological equation as well as the viscosity-temperature equation are further developed with tested rhrogramme and viscosity-temperature curve, respectively. Beased on the researches on thixotropic mechanism and thixotropy fluid property, hysteresis loop curve, structure failure and viscosity build-up curve as well as shear stress decrement curve for one type oil are first present in this paper. According to the theoretical researches and testing results, a novel thixotropy equation with τ=τ_∞e~ pattern, which is of hi-accuracy, few parameter and simplicity, is developed. Considering the influence of various parameters on rheological behaviour, depressant adding condition is optimized and experimental evaluation on BEM-5P is conducted, which further unrip its mechanism on the Huabei crude. A corresponding viable pipe transportion programmel is also recommended.
本文基于原油流变学、非牛顿流体力学、石油化学、结晶学、原油管输工艺学等理论,以华北原油为研究对象,结合原油物性及实验影响因素分析,制定出实验研究的评价指标及实验方案;从连续介质力学宏观分析的角度,利用HAAKE RS600高端旋转流变仪开展了大量的室内实验,并运用微观研究方法,测定了油样的流变曲线和粘温曲线,建立了流变方程和粘温方程;通过对触变性机理和触变性流体特征的研究,首次对华北原油测定出滞回环曲线、结构破坏与恢复粘时曲线、剪切应力裂降过程曲线,并在理论研究和实验结果的基础之上,建立了能定量描述含蜡原油剪切应力裂降过程的新型三参数触变模式τ=τ_∞e~b/(t+c,该模型具有精度高、参数少、实验简便且适用性强的特点;通过对含蜡原油流变性的影响因素理论研究,开展了加剂条件优选及BEM-5P降凝剂室内评价实验,进一步揭示了降凝剂对华北原油作用机理,在此基础之上,提出了华北原油管输的可行性方案。
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Based on the theories of rheology, Non-Newtonian Fluid Mechanics, petroleum chemistry, crystallography and pipeline technology etc. and sampling Huabei crudes, experimental indexes and programmes are drew out, integrating the oil properties and parameter analysis; in terms of the macro analysis of continuum mechanics, substantial experiments are conducted with HAAKE RS600 rotational rheometer and the rheological equation as well as the viscosity-temperature equation are further developed with tested rhrogramme and viscosity-temperature curve, respectively. Beased on the researches on thixotropic mechanism and thixotropy fluid property, hysteresis loop curve, structure failure and viscosity build-up curve as well as shear stress decrement curve for one type oil are first present in this paper. According to the theoretical researches and testing results, a novel thixotropy equationwith τ=τ_∞e~ pattern, which is of hi-accuracy, few parameter and simplicity, is developed.Considering the influence of various parameters on rheological behaviour, depressant adding condition is optimized and experimental evaluation on BEM-5P is conducted, which further unrip its mechanism on the Huabei crude. A corresponding viable pipe transportion programmel is also recommended.
本文基于原油流变学、非牛顿流体力学、石油化学、结晶学、原油管输工艺学等理论,以华北原油为研究对象,结合原油物性及实验影响因素分析,制定出实验研究的评价指标及实验方案;从连续介质力学宏观分析的角度,利用HAAKE RS600高端旋转流变仪开展了大量的室内实验,并运用微观研究方法,测定了油样的流变曲线和粘温曲线,建立了流变方程和粘温方程;通过对触变性机理和触变性流体特征的研究,首次对华北原油测定出滞回环曲线、结构破坏与恢复粘时曲线、剪切应力裂降过程曲线,并在理论研究和实验结果的基础之上,建立了能定量描述含蜡原油剪切应力裂降过程的新型三参数触变模式τ=τ_∞e~b/(t+c,该模型具有精度高、参数少、实验简便且适用性强的特点;通过对含蜡原油流变性的影响因素理论研究,开展了加剂条件优选及BEM-5P降凝剂室内评价实验,进一步揭示了降凝剂对华北原油作用机理,在此基础之上,提出了华北原油管输的可行性方案。
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Based on experimental results of unstiffened overlapped circular hollow section joints, the axial forces of experimental truss members connected with hinge joints, semi hinge joints or rigid joints, are calculated by the finite element analysis model.
以平面K型圆钢管搭接节点的试验数据为基础,通过对试验桁架建立铰接、半铰接和刚接杆系有限元模型,计算受外荷载作用下试验桁架各杆件的轴力。
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Results The endothelial cell and fibroblast of valves and vessel walls in experimental group were completely decellularized, no cell fragments were retained within the matrix scaffold; collagen fiber and elastin fiber had been preserved with intact structure and wavily arrayed; deoxyribonucleic acid content of valves and vessel walls in experimental group were decreased by 97.58%, 97.25% compared with that of control group.
结果 实验组瓣膜及血管壁中内皮细胞、成纤维细胞去除完全,无细胞核碎片;瓣膜及血管壁胶原纤维和弹力纤维呈波浪状排列、整齐,结构完整;瓣膜、血管壁的基因组脱氧核糖核酸含量分别较对照组下降97.58%和97.25%。
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Hypoxic-ischemic encephalopathy experimental grouping: Sixteen successful C57/BL6J mice models, aged 7 days, were randomized into 2 groups: experimental group (n =8), following ligation of right common carotid artery, mice were placed in the closed container containing 0.08 volume fraction of oxygen and 0.92 volume fraction of Nitrogen gas, and taken out 1.5 hours later; 3 μL ESCs were injected into the right cerebral ventricle at about 1 week, and control group (n =8), in which, the same amount of PBS was injected into the right cerebral ventricle.③ At 12 weeks after transplantation, the survival and migration of induced ESCs labeled by Lac-Z in the spinal cord and brain were observed by zymologic method.
缺氧缺血性脑病实验分组:将造模成功的鼠龄7 d的C57/BL6J16只小鼠随机分为2组:实验组8只,结扎右侧颈总动脉后将小鼠置入含体积分数0.08氧气和体积分数0.92氮气的密闭容器内,1.5 h后取出;1周后在右侧脑室内注入3 μL诱导胚胎干细胞。
- 相关中文对照歌词
- Experimental Film
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- 推荐网络例句
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This paper designs the communication system of radio telescope FAST.
针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。
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Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.
步氏和政羊化石大量出土于广河县阿力麻土乡后山村,产于灰黄色泥质粉砂岩中。
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If you start very rapidly with high dose you will have flatulence just as if you were to take a high fiber diet but if you start very slowly and low dose and titrate very slowly then you will avoid most of the dose symptoms.
如果您以高剂量快速开始,您会有如同摄入高纤维饮食似的肠胃气胀;但是,如果您以低剂量缓慢开始,并且缓慢滴定,您将可避免绝大多数剂量依赖性症状。