科技论文中的参考文献

论文引用参考文献，请按《文后参考文献著录规则》（GB7714），采用顺序编码著录制，即按照参考文献在文中出现的先后顺序用阿拉伯数字加方括号标出，并按其在文中出现的先后顺序全部列于文章末尾。参考文献中的作者，若在3名以内，则全部列出，若超出3名，则列出前3名，若中文名则其后加“等”，英文名则其后加“et al”。     

14MeV快中子反应截面测量的进展

１４ＭｅＶ快中子反应截面测量的进展孔祥忠，王永昌，袁俊谦，胡尚斌，杨景康（兰州大学现代物理系，兰州，７３０００１）随着核聚变技术的不断发展、核聚变能利用接近工程阶段，聚变堆所需核数据越来越重要。聚变堆主要是ｄ－Ｔ反应，产生大量１４ＭｅＶ中子，这些中子...     

大气压下大功率等离子体炬的数值模拟

主要研究直流等离子体炬的数值模拟方法，通过求解等离子体弧社区域的能量守恒，动量守恒，质量守恒及电流连续性方程，得到不同边界条件下温度，速度，电流密度分布，计算了大气压下２００Ａ自由氩弧的温度分布，电势和电流分布，并与实验数据及现有的理论计算进行了比较，得到了较好的结果，在此基础上结合本实验室５０００Ａ大功率等离子体炬，讨论了有阴极喷口存在下的弧柱部分的数值计算，以及能量守恒方程中辐射项，焦耳热项的     

加速管非谐振扰动测量装置的机械设计

在谐振扰动测量技术中，由于实际中，加速波导工作在行波状态，场的振幅分布与加速段谐振时有较大差别，此外，由于扰动体引起的频率变化特别小，在长的加速波导段上应用谐振扰动技术受到限制，为此，特别设计了1套非谐振扰动的测量装置。     

分离设备清理的优化方法

分离设备在运行过程中会持续产生少量固体沉积物，需要定期清理。目前常规的清理方法是采用区段单级清理模式，将多个分离设备并联。针对该方法原料用量大、总用时长的缺点，本文提出级联模式清理方法，并通过计算进行单级清理与级联清理方法优化比较。以10级的级联清理为例，优化结果表明，相比常规清理方法，原料使用量节省75.9%，清洗时间节省89.3%。因此，采用级联模式清理可以大幅减少原料使用量，有效缩短清理总时长，显著优于单级模式清理。     

激光辐照导致相变现象的理论分析

激光在辐照一些半导体材料时，由于半导体材料的能带宽度比较窄，电子容易发生极化，甚至电离，由此，材料的物理性质会发生巨大的变化，到一定程度则发生相变。     

^229Ra的衰变

用１４ＭｅＶ中子轰击钍靶，通过２３２Ｔｈ（ｎ，α）２２９Ｒａ反应产生２２９Ｒａ，用放射化学方法从被照靶物质中分离出２２９Ｒａ。利用γ（Ｘ）谱学方法，首次观测到了能量分别为１４．５，１５．６，１８．８，２１．８，２２．５，４４．０，４７．５，５５．０，６３．０，６９．６，９３．６，９４．１，９８．５，１０２．２，１０４．５，１０６．１，１６１．１，１７１．５ｋｅＶ的２２９Ｒａ衰变的１８条新γ射线，建立了２２９Ｒａ的部分衰变纲图。     

NPTC-11数字显示智能控制仪表研制

过程控制仪表准确与否，直接影响核电厂安伞运行，因此，对此类仪表的国产化更新改造，经验的积累十分必要。本文遵循核级仪表设计标准，充分考虑电站实际使用需求、技术冗余等因素，研制了NPTC-11数字显示智能控制仪表。经过近一年的核电站实用检验表明，该仪表符合研制目标，满足预期的研制要求。     

关于参考文献

关于文中参考文献，请按《文后参考文献著录规则》（GB7714），采用顺序编码著录制，即按照参考文献在文中出现的先后顺序用阿拉伯数字加方括号标出，并按其在文中出现的先后顺序全部列于文章末尾。参考文献中的作者，若在3名以内，则全部列出，若超出3名，则列出前3名，若中文名则其后加“等”，英文名则其后加“etal”。     

低能离子束加减速实验研究

为满足核物理实验的要求，需要提供能量10～100keV的离子束。欲获得如此大范围能量可调变的离子束，从离子源直接引出是难以实现的，并且，能量太低时，不利于离子束的传输。因此，现实可行的方案是选择一个固定的引出能量，在靶前采用加减速结构，将离子束减速到10keV或加速到100keV，实现离子束能量的调整。     

基于NPL-NMC系统的γ测量子系统的建模与优化

在军控核查中,核部件的质量、丰度、年龄属性需采用无损方法进行核查,NPL-NMC系统是一套利用中子多重性测量核部件质量属性的装置,为建立完善的属性测量系统,还需在NPL-NMC系统的基础上建立γ测量子系统。本文通过设计γ测量子系统在NPL-NMC系统上的布局及对中子屏蔽的优化,使系统能对铀部件的丰度、年龄属性进行测量。模拟计算结果表明,该γ测量子系统能很好地满足军控核查对铀部件丰度、年龄属性测量的要求。     

Identification of radiation treatment of wheat （Triticum aestivum. L）and rice （Oryza sativa. L） samples using thermoluminescence of contaminating minerals

Food irradiation is gaining popularity worldwide and this technology is important to improve quality and reduce the post harvest losses of food. Because of the rapid commercialization of irradiated foods throughout the world, compliance of different regulations relating to use of technology in different countries and demand of consumers for clear labelling of irradiated foods, there is need for the development of analytical methods to detect radiation treatment of food. Among several methods studied so far, thermoluminescence （TL） is an important method that can be used to find out the irradiation history of food that contain even a very minute amount of dust particles. In this study, the irradiated and unirradiated wheat and rice samples were analyzed using the TL method. The samples were purchased from the local market of Peshawar and irradiated to radiation doses of 0.5 and 1.0 kGy using Co-60 gamma irradiator at the Nuclear Institute for Food and Agriculture （NIFA）, Peshawar. The mineral contaminants were isolated by jet water, ultrasonic treatment, and density gradient. TL glow curves of the isolated minerals from irradiated and unirradiated samples were recorded between the temperature ranges of 50-500℃ using a TL reader. Generally, the glow curves for irradiated samples showed much higher TL intensities （TL1） than the unirradiated samples. The results were normalized by rerradiation of mineral samples to gamma-ray dose of 1.0 kGy followed by determination of the second glow curves （TL2）. The ratio of the area of first glow curve to that of second glow curve （TL1/TL2） was calculated for selected temperature intervals and compared with the recommended values for unirradiated and irradiated samples. Finally, the shapes of the glow curves for irradiated and unirradiated samples were also analyzed. On the basis of these results （comparison of TL-intensities, TL1/TL2 ratios and shapes of the glow curves）, all the irradiated and unirradiated samples of wheat and rice were unequivocally identified.     

糖尿病性阳痿患者性激素受体变化研究

为探讨性激素和性激素受体与糖尿病性阳瘘的关系，选择32例糖尿病性阳瘘患者、32例糠尿病无阳瘘患者、32例非糖尿病阳瘘患者和40例健康男性为研究对象，分别采用放射免疫分析测定血浆PRL、T、E2水平，采用放射配基结合分析测定外周血白细胞的ER、AR水平。结果显示，与正常对照组和非糖尿病性阳瘘组相比，糖尿病性阳瘘组和糖尿病无阳瘘组的PRL水平均升高，T和R水平均降低，E2／T和ER／AR比值均升高；与糖尿病无阳瘘组相比，糖尿病性阳瘘组的PRL水平、T水平、E2／T比值均无显著差异，但AR水平进一步降低，ER／AR比值进一步升高。T和AR水平均与年龄之间存在负相关关系。AR水平降低和ER／AR比值升高可能是导致糖尿病性阳瘘的重要原因之一；T和AR水平随年龄增长而降低可能是导致糖尿病性阳瘘的发病率随年龄增长而明显增加的重要原因。     

Prediction of material erosion and lifetime during major plasma instabilities in tokamak devices

Surface and structural damage to plasma-facing components due to the frequent loss of plasma confinement remains a serious problem for the tokamak reactor concept. The deposited plasma energy during major disruptions, edge-localized modes (ELMs), and vertical displacement events (VDEs) causes significant surface erosion, possible structural failure, and frequent plasma contamination. Surface damage consists of vaporization, spallation, and liquid splatter of metallic materials. Structural damage includes large temperature increases and high thermal stresses in structural materials and at the interfaces between surface coatings and structural members. To evaluate the lifetimes of plasma-facing materials and nearby components and to predict the various forms of damage that they experience, comprehensive models (contained in the computer simulation package) are developed, integrated self-consistently, and enhanced. Splashing mechanisms such as bubble boiling and various liquid magnetohydrodynamic (MHD) instabilities and brittle destruction mechanisms of nonmelting materials can be serious erosion mechanisms and are being studied in detail. The ejected macroscopic particles (MPs) will interact with incoming plasma particles and with the vapor cloud above the surface. Therefore, the dynamic behavior of MPs in the vapor cloud and their influence on total erosion rate is important. Results of self-consistent MHD calculations are presented in which the dynamics of both the vapor cloud and MP interaction are coupled with incoming plasma ions and electrons from the scrape-off layer during a disruption. The design requirements and implications of plasma facing and nearby components are discussed, along with recommendations to mitigate and reduce the effects of plasma instabilities on reactor components.     

管道清洗装置自控系统研制

工业管道在长时间使用过程中,会积聚杂质影响产能,所以需要进行管道清洗.管道清洗装置依次接入工业管路中,清洗各管道杂质.为实时监测管道清洗装置的各项参数,实现人机交互,研制了一套自控系统.该系统选择泓格控制器、研华一体机配合LabVIEW的软硬件架构,缩短系统开发时间,实现系统小型化;采用"双背板"结构、快接插件设计,满...     

双三唑吡啶硝酸溶液反萃TODGA中的Am和Eu

合成了水溶性的2,6-二［1-(羟丙基)-1H-1,2,3-三唑-4-基］吡啶(PTD),研究了以N,N,N′,N′-四辛基-3-氧杂戊二酰胺（TODGA）为萃取剂、正十二烷为稀释剂时,PTD对Am和Eu的反萃行为。研究了两相接触时间、PTD浓度、初始硝酸浓度和温度对Am和Eu分配比的影响。结果表明：Am与PTD形成1∶1型和1∶2型配合物,Eu与PTD形成1∶1型配合物; PTD反萃TODGA-TBP中Am和Eu的反应均为吸热过程。在PTD浓度一定的情况下,反萃硝酸浓度小于07 mol/L时,PTD可以实现TODGA中的Am与Eu的反萃分离。     

中国散裂中子源的空气活化监测与评价

中国散裂中子源是我国正在运行的质子加速器大科学实验装置,保证其空气活化水平处于可监测、可控状态,对确保装置的正常运行和科研产出、确保工作人员和公众的辐射安全具有重要意义。国内外以往对加速器空气活化的认识基本都来自参考文献和理论计算;由于没有针对性研发,以往国内加速器的空气活化监测没有测量到空气活化核素及其浓度。2019年底,散裂中子源研发了在线空气活化监测系统,成功监测到了空气活化的主要放射性核素及其活度浓度。本文介绍了该系统的研发情况和监测结果,并提出了对加速器空气活化监测与评价的一些看法。     

Preparation and properties of 117m Sn(IV)-TTHMP in in-vitro and in small animals

In this work,TTHMP was synthesized and labelled with 117m Sn.The preparation conditions,stability and lipophilicity of 117m Sn(IV)-TTHMP were investigated.Biodistribution of the complex in rabbits and mice was studied.It was found that the quantity of TTHMP and pH value of the prepararion solution had vital effects on the labeling yield of 117m Sn(IV)-TTHMP.It was also found that 117m Sn(IV)-TTHMP was hydrophilic and stable at room temperature and 37℃ in open air 117m Sn(IV)-TTHMP showed unexpectedly high bone uptake and bone-to-blood ratio in the animals.This made it potentially useful as an reagent for skeletal scintigraphy and radiotherapy of bone tumors.     

带增益的气体探测器读出ASIC的研制

设计了用于带增益的气体探测器比如GEM、RPC等读出的ASIC,实现对探测器信号的放大、成形和对后续实时采样ADC的驱动电路.电荷增益和成形时间可调,有利于探测器不同增益下性能的研究,也扩展了芯片的应用范围.由于成形电路引入的噪声变得显著,在低电荷增益下,ENC会随增益下降而增加.芯片采用Chartered 0.35μm2P4M CMOS工艺,论文介绍了芯片的详细设计和仿真结果.     

气相色谱氩、氪、氙、氡分离度初步研究

核爆炸产生多种稀有气体核素,这些核素可作为核泄露监测对象。气相色谱是组分分离的重要手段,在核爆炸监测取样中有重要应用。本文以5分子筛作为固定相,高纯氮作为流动相,测量了氩、氪、氙、氡在气相色谱中的分离效果。结果表明,在相同色谱条件下,氩、氪分离度小于氪、氙分离度;在柱流量35.6 mL/min、柱温353 K条件下,气相色谱氩、氪,氪、氙,氙、氡分离度均大于2.25。