Optical design of the Lyman alpha based beam emission spectroscopy(LAB)diagnostic on the HL-2A tokamak

In this article, we present the optical design of a novel diagnostic on the HL-2 A tokamak, i.e. the20-channel edge Lyman-alpha beam emission spectroscopy, which is a promising solution for edge density turbulence research on tokamaks, as it offers the possibility of density fluctuation measurement with a 3.3 mm spatial resolution while maintains a high temporal resolution of1 μs. The optical path, including the reflective collection optics, the high-dispersion spectrometer, and the linear detector array, is carefully optimized to obtain a good image quality and a high throughput. The maximum root mean square radius of the collection optics is 64 μm.The detected photon flux is estimated to be about 10~(11) photons/s/channel.     

浅析有机热载体的更换或再生

探讨了有机热载体的几个物理属性参数，同时提出了有机热载体进行更换或再生的简易判断式。     

Applications of Skyrme Energy-Density Functional to Fusion Reactions for Synthesis of Superheavy Nuclei

It is of great importance to predict fusion cross sections and to analyze reaction mechanism for massive heavy-ion fusion reactions, especially for fusion reactions leading to superheavy nuclei. In those reactions, the calculation of the capture cross section is of crucial importance. It is known that Wong＇s formula based on one-dimensional barrier penetration can describe the fusion excitation function well for light reaction systems, while it fails to give satisfying results for heavy reaction systems at energies near and below the barrier. For solving this problem, we applied the Skyrme energy-density functional for the first time to study heavy-ion fusion reactions. The barrier for fusion reaction was calculated by the Skyrme energy-density functional together with the semi-classical extended Thomas-Fermi method.     

用热导仪检测祖母绿

用热导仪检测祖母绿我曾先后报导过三种热导仪，它们都是设计来检测有色宝石和钻石的仿制品的。现在我发现我没有强调这类仪器的另一种极有意义的功能。最近，我用热导仪测了一个吉尔森合成祖母绿，更加证实合成祖母绿的热导至少是天然祖母绿的两倍。为了更彻底地探索这种...     

Structure and Magnetic Properties of LaCo_(13-X)M_X Intermetallic Compounds

ＳｔｒｕｃｔｕｒｅａｎｄＭａｇｎｅｔｉｃＰｒｏｐｅｒｔｉｅｓｏｆＬａＣｏ＿（１３－Ｘ）Ｍ＿ＸＩｎｔｅｒｍｅｔａｌｌｉｃＣｏｍｐｏｕｎｄｓＷＵＪｉａｎＭｉｎ；ＬＩＦｅｎｇ；ＴＡＩＬｉＣｈｉａｎｄＺＨＥＭＧＱｕｎＳｔｒｕｃｔｕｒｅａｎｄＭａｇｎｅｔｉｃＰ...     

在八千亿的背后——初探中国食品工业三大壁垒(绿色篇)

<正> 浙江舟山出产的冻虾仁,素以个大味鲜闻名海内外,欧洲更是其多年的传统销售市场。然而,最近却因在冻虾仁中查出10亿分之0.2克的氯霉素,而被欧洲一些公司要求退货并索赔。冻虾仁里的氯霉素从哪儿来?原来是手工剥虾的员工,因难耐手痒之苦,用含氯霉素的消毒水止痒,从而带到冻虾仁中的。“手痒”并非一时,为何到现在才提出?这显然是因为欧盟提高了进口冻虾仁的要求。“冻虾仁事件”使“绿色壁垒”这个词更加凸现。     

PVC成型一维不稳定传热速算图的研究

以PVC板材为基础，研究了其一维不稳定传热速算图的确定，它既是普通速算图的一部分，又增加了实用性和计算的方便性。     

Applications of Skyrme Energy-Density Functional to Fusion Reactions Spanning Fusion Barriers

在加速器驱动次临界系统（ADS）项目中，由我院承担研制的强流RFQ注入系统，包括ECR强流离子源及束流低能传输线（LEBT），从2005年8月移机中国科学院高能物理研究所后，历时半年多时间，解决了由于工作环境改变而带来的一系列水、电、气问题，包括电器系统供电与控制的改造，     

ANALYSIS OF SEEPAGE FLOW IN A CONFINED AQUIFER WITH A STANDING COLUMN WELL

The standing column well for ground source heat pump systems is a promising technology with high efficiency and environmental benefit, where groundwater is drawn from the bottom of a well and then re-injected to its top after transferring heat with heat pumps. Heat transfer analysis of great significance and aquifer involves complex problems. Determining the groundwater seepage flow is a precondition to solve the energy equation describing the heat transfer of the system. Only when piezometric head is obtained, the seepage velocity can be determined according to Darcy’s law. In this article the groundwater seepage flow in an axial symmetrical geometry was studied under the assumption that gross groundwater flow is neglected. An analytical solution of the groundwater seepage flow for a confined aquifer was acquired by using the integral transform method, which may provide a foundation for heat transfer analysis of the standing column well system.     

用于疏通油水井的脉冲放电技术

评价了各种不同的解堵技术，指出冲击波解堵是一种很有发展前途的技术。介绍了液中脉冲放电产生冲击波的基本原理，并由此研制出了一套井下脉冲放电油水井处理设备样机。通过现场试验，表明用冲击波疏通油井能较好地解除油井污染，提高采收率。