论闽南方言岛

闽南方言岛是明、清以来随着闽南地区的居民小规模向外播迁而在其他方言区内形成的一种特殊的语言现象,它对于探索特定的语言环境下语言的交际、语言的接触和语言的演变都具有特殊的研究价值.闽南方言岛的地理分布、闽南方言岛的历史形成、闽南方言岛的语言生活、闽南方言岛的语言接触和语言演变是探讨闽南方言岛必须涉及的问题.     

地震荷载作用下核级(IE)蓄电池电气性能研究

简要介绍核级蓄电池模拟地震试验的试件选择、安装环境的模拟以及试验的基本程序,重点讨论地震荷载作用期间蓄电池连续放电特性,以及试验前后蓄电池容量的考核等特性问题。验证了样机设计的可靠性及合理性,为改进设计及现场安装提供了依据。还论证了国产蓄电池应用在核电领域中的可行性。     

A quasar possibly ejected from NGC4579

With the 2.16 m telescope at Beijing Astronomical Observatory, it is identified that a compact X-ray source detected by ROSAT located in the vicinity of 5′.9 from the LINER galaxy NGC4579 is a quasar with a redshift z = 0.106. A further analysis indicates that this quasar is possibly ejected from NGC4579.     

The two-step monsoon changes of the last deglaciation recorded in tropical Maar Lake Huguangyan, southern China

The concentrations of biogenic silica, total organic carbon, total nitrogen and total hydrogen inferred from the sediments of tropical Maar Lake Huguangyan, southern China, provide a climate record of the last déglaciation with century resolution. The records fully demonstrate the existence of the two-step shape of the last déglaciation in tropic East Asia, and they point out noticeable differences between the low and high latitudes in the Northern Hemisphere. Thus, the Boiling first warming at the last deglaciation in the low latitude may have preceded that of the high latitude, whereas the cooling of the Younger Dryas occurred synchronously in the two regions. These results likely suggest that the links between the low and high latitude climates in the Northern Hemisphere during this period are complexity.     

新型炎症显像剂的初步研究

对柠檬酸（Ｃｉｔ）、酒石酸（Ｔａｒ）、ＤＬ－苹果酸（ＤＬ－Ｍａｌ）、Ｌ－苹果酸（Ｌ－Ｍａｌ）和Ｄ－葡萄糖二酸（Ｄ－Ｇｃａ）等５种含有羟基和羟在的小分子化合物的＾９９ｍＴｃ标记条件以及亲炎症的生物性能进行了初步研究。根据它们的最佳标记条件,分别对其进行标记。标记率均大于９０％,这５种配合物和＾９９ｍＴｃＯ４＾－４（Ｐ）的松节油致炎小鼠中的生物分布结果表明,炎症模型脓肿与肌肉的质量活度分数之比值（ａｍ     

在物化实验中用自编程序实现计算机数据处理

在我们所开设的物理化学实验中有许多电化学实验,用扫描恒电位仪发出信号,Ｘ－Ｙ记录仪接收信号,因为普通扫描情怀电位仪没有计算机接口,所以不能用计算机采集数据及处理。本文通过采用信号处理仪代替Ｘ－Ｙ记录仪采用数据并通过自编软件帝现数据转换,再用美国ＥＧ＆Ｇ－ＰＡＲ公司提供的电化学软件包解析数据,实现数据采集及处理的计算机化,减小了数据记录及处理的误差,求得了相应的电化学参数。     

Investigation on the synthesis mechanism of β-FeSi2 prepared by pulsed laser deposition

The FeSi2 target alloy was fabricated by conventional powder metallurgy technology, and then, β-FeSi2 thin films was successfully prepared by pulsed laser deposition (PLD). X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) were used to characterize the structure, composition, and their changes in the process of β-FeSi2 preparation. In addition, a laser sintering process was also employed to prepare FeSi2 alloy. The analysis of radiation heat transfers in different-sized FeSi2 melt indicates that the cooling rate of the melt depends on the size, i.e., the cooling rate of the micron sized melt is 103 times greater than that of the millimeter-sized melt. The product α-FeSi2 by laser sintering and β-FeSi2 by PLD reveals the different phase transition process in crystallization of milli-meter-sized and micron-sized (or submicron-sized) FeSi2 melt. The results of PLD preparation process shows that β-FeSi2 could be pre-pared through a liquid-phase sintering, followed by a rapid cooling.     

居住区道路夜间光环境安全心理影响因素

居住区作为居民最熟悉的户外环境,其步行道路夜间光环境的适人化设计显得尤为重要。通过构建虚拟模型还原居住区内人车混行道路的照明环境,采用眼动仪记录虚拟场景中受试者的眼动特征,并获取其对测试环境的心理感受评分,研究了居住区夜间光环境中色温、灯具安装高度与安装间距等因素对行人生理与心理的影响特征。结果表明:光源色温值在3 800 K左右时有较强的安全慰藉作用;在5 m的路面有效宽度下,光源垂直路面处与相邻光源间的距离在13～17 m间时安全感评分最高,此时灯具安装高度约为路面有效宽度的1.3倍,灯具安装间距约为其高度的2.2倍;照明环境的改善可以有效提高使用者的安全感。研究可为今后居住区道路的照明设计提供理论参考。     

Grōtzsch环模函数的几个不等式

设a>1,R_G=R_G(a)表示Grotzsch环,它的余集分支由单位球|x|≤1和射线a≤x_1<∞,x_2=x_3=…x_m=0组成,它的模modR_G(a)记为logΦ(a),本文证明了关于模函数Φ(a)的若干不等式.