取得

In this thesis, three major achievements were made in theoretical study: conditions and rules for preparing nano-powders by chemical precipitation are analyzed from the point of view of thermodynamics and kinetics, the principle, standards and experimental method for the aqueous dispersion of nano-scaled metal oxide powders were proposed and verified, mathematical model of nano-filming addition of dopants by chemical coprecipitation was established. In experimental research, nm-ZnO, nm-Bi〓O〓, nm-Co〓O〓 and nm-MnO powder with spherical shape, narrow particle size distribution and small particle size were prepared successfully, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powder were prepared successfully and surface modification on these nano-powders was also achieved, 0-3 nanocomposite ZnO varistors with nm-ZnO, nm-TiO〓and nm-MnO respectively were prepared successfully by conventional mechanical attrition, and exhibited much better electrical properties than those of conventional varistors.

综上所述，本文在理论研究方面取得了三项成果：（1）从热力学和动力学角度推导并分析了液相化学沉淀法制备纳米粉体的反应条件和规律，（2）提出了纳米氧化物的水分散体系的设计原理、规范和通用实验步骤，（3）提出了共沉淀的数学模型和计算方法；在实验方面所取得的成果有：（1）成功制备了粒度小、分布窄、形貌对称的纳米氧化锌、纳米氧化铋、纳米氧化钴和纳米氧化亚锰，（2）成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，（3）成功地进行了纳米氧化锌、纳米二氧化钛和纳米氧化锰对压敏电阻的0—3复合掺杂实验，试样性能远优于常规压敏电阻，为实现压敏电阻的高能高压化提供了新的方法和思路。

I urge you to read this supplement, in which we provide a review of exploration and mining opportunities (especially for gold, tantalite, coal, bitumen, lead and zinc), and a summary of the legal and fiscal regimes for mining, plus other general information, including contact details, which we hope will persuade you to shift your search for minerals to Nigeria - an exciting new mining destination.

更为重要的是，尼口利亚经济领域的改革得到了全球的认可，从而大大降低了我们的债务。尼日利亚也因此又成为了一个具有吸引力的投资目的地。也就在我们的透明化和反腐败措施取得进展的同时，尼政府进一步深入经济改革的使命也得到了更多的推行。国际透明化和世界经济论坛以及世界银行的全球竞争力报告，最近都表扬尼日利亚在这些重要领域取得巨大进展。

The distribution taw of K_ values as random variables is examined separately fortwo materials of 43 specimens of aluminum alloy Lc 4 and 30 specimens of alloy steel 30CrMnSiNi2A.

利用统计理论估计出取得在90%的置信度下与真值误差小于5%的K_平均值所需试样数约为4—6。指出在每组K_试验中用最少试样取得满足上述要求的K_平均值的具体方法。

D all taxable income related to production and business of the above individual industrial and commercial households and individuals.

上述个体工商户和个人取得的生产、经营有关的各项应纳税取得。

Article 6 To obtain a work safety license, an enterprise shall satisfy the following work safety conditions:(1)Having established and improved the responsibility system for work safety,and formulated a whole set of work safety regulations and operating rules;(2)Its investment In safety Is up to work safety requirements;(3)Having set up administrative entities for work safety and installed full-time work safety administrative personnel;(4)The major person-in—charge and work safety administrative personnel have passed the appraisal;(5)The special personnel have passed the appraisal conducted by the competent authority, and have obtained qualification certificates for special operations;(6)The workers have gone through work safety education and training;(7)Having workers insured against work—related injuries in accordance with the law and having paid insurance premiums in this regard;(8)Its premises,worksites,safety facilities,equipment and technology are up to the requirements of the relevant work safety laws,regulations,standards and rules;(9)Having preventive measures against occupation hazards and providing workers with labor protection articles which are up to the national standards or standards of the industrial sector concerned;(10)Having conducted safety evaluation in accordance with the law;(11)Having measures for the testing,assessment and monitoring of sources of grave danger, as well as emergency plans thereabout;(12)Having emergency rescue plans for work accidents,and entities or personnel specialized in emergency rescue.and having necessary emergency rescue materials and equipment; and (13)Satisfying other conditions as provided by laws and regulations.

第六条 企业取得安全生产许可证，应当具备下列安全生产条件：建立，健全安全生产责任制，制定完备的安全生产规章制度和操作规程；设置安全生产管理机构，配备专职安全生产管理人员；主要负责人和安全生产管理人员经考核合格；主要负责人和安全生产管理人员经考核合格；特种作业人员经有关业务主管部门考核合格，取得特种作业操作资格证书；从业人员经安全生产教育和培训合格；依法参加工伤保险，为从业人员缴纳保险费；厂房，作业场所和安全设施，设备，工艺符合有关安全生产法律，法规，标准和规程的要求；有职业危害防治措施，并为从业人员配备符合国家标准或者行业标准的劳动防护用品；依法进行安全评价；有重大危险源检测，评估，监控措施和应急预案；有生产安全事故应急救援预案，应急救援组织或者应急救援人员，配备必要的应急救援器材，设备；法律，法规规定的其他条件。

This article analyses the application conditions of freezing method, current research status and the problems in this field. It points that it's necessary to study deep freezing temperature field deeply and discusses the factors which influence the freezing wall such as soil's nature, moisture content, geological conditions, etc. It introduces the theory, process of freezing method, the distribution of temperature field of freezing method and key thermotics parameters influencing freezing temperature field. It simplifies the deep freezing temperature field model. Through ANSYS, this article founds the deep freezing temperature field model, and simulates the field on vary heat conductivities. It analyzes the results of ANSYS simulation, gains the theoretical value of thermometric holes which is needed by back-analysis. Using the simulation temperature and actual value, it gets the equivalent heat conductivity. Then it solves the deep freezing temperature field by the equivalent value, simulates the freezing wall development process and temperature change curve. Against the actual project, the results are favorable.

文中分析了冻结法施工的应用条件，目前对冻结法施工的研究现状和在此领域内存在的问题，指出了对深土冻结温度场进行深入研究分析的必要性；对影响冻结壁形成发展的因素如冻土土性、含水量、地质条件及施工方法等因素进行了论述；对冻结法施工的原理、过程，冻结法温度场的分布情况，影响冻结温度场分布的主要热学参数进行了综述；对深土冻土温度场模型进行了合理的简化，通过ANSYS大型有限元分析软件，建立了深土冻结温度场的模型，对不同导热系数情况下的深土冻结温度场进行了模拟；对ANSYS的模拟结果进行了定性的分析，通过对ANSYS结果的后处理取得了反分析时需要用到的测温孔理论温度值；经过对测温孔模拟温度值和实测温度值的分析，得到了冻结温度场的等效导热系数；使用等效导热系数对深土冻结温度场进行了求解，模拟了冻结壁发展情况和温度场中的温度变化曲线，用所得结果对比工程实际情况，取得了较好的效果。

This article analyses the application conditions of freezing method, current research status and the problems in thisiold. It, points that it" s necessary to study deep freezing temperature field deeply and discusses the factors which influence the freezing wall such as soil" s nature, moisture content, geological conditions, etc. It introduces the theory, process of freezing method, the distribution of temperature field of freezing method and key thermotics parameters influencing freezing temperature field, it simplifies the deep freezing temperature field model. Through ANSYS, this article founds the deep freezing temperature field model, and simulates the field on vary heat conductivities. It analyzes the results of ANSYS simulation, gains the theoretical value of thermometric holes which is needed by back analysis. Using the simulation temperature and actual value, it gets the equivalent heat conductivity. Then it solves the deep freezing temperature field by the equivalent value, simulates the freezing wall development process and temperature change curve. Against the actual project, the results are favorable.

文中分析了冻结法施工的应用条件，目前对冻结法施工的研究现状和在此领域内存在的问题，指出了对深土冻结温度场进行深入研究分析的必要性；对影响冻结壁形成发展的因素如冻土土性、含水量、地质条件及施工方法等因素进行了论述；对冻结法施工的原理、过程，冻结法温度场的分布情况，影响冻结温度场分布的主要热学参数进行了综述；对深土冻土温度场模型进行了合理的简化，通过ANSYS大型有限元分析软件，建立了深土冻结温度场的模型，对不同导热系数情况下的深土冻结温度场进行了模拟；对ANSYS的模拟结果进行了定性的分析，通过对ANSYS结果的后处理取得了反分析时需要用到的测温孔理论温度值；经过对测温孔模拟温度值和实测温度值的分析，得到了冻结温度场的等效导热系数；使用等效导热系数对深土冻结温度场进行了求解，模拟了冻结壁发展情况和温度场中的温度变化曲线，用所得结果对比工程实际情况，取得了较好的效果。

Sahar scores his first international goals, coming off the bench as Israel trounce Estonia 4-0, poaching the third and firing home the fourth from outside the area.

萨哈尔以替补身份取得了首个国家队入球，在以色列以4-0痛击爱沙尼亚一仗中，偷袭取得比赛第三个入球和在禁区外施射打进第四球。

That we can tuck in our children at night and know they are fed and clothed and safe from harm.

我们已经取得的成果给了我们明天取得更大成果的希望。

As the unentitled disposition is prerequisite for the acquisition in good faith, the effectiveness of the unentitled disposition generally will affect the effectiveness of the contract for transaction.

由于善意取得的构成以无权处分为前提，因此，无权处分行为的效力一般会影响该转让合同的效力；除无权处分之外，合同的其它效力瑕疵对善意取得也将产生影响。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。