太阳耀斑中单能X射线源发射（Ⅰ）

本文用大量天文观测数据，在太阳耀斑中存在来自ｐ－ｅ－ｐ过程的单能。的Ｘ射线源发射。     

The Recognition of Ancient Chinese Characters Using Cellular Neural Network（Ⅰ）

ＴｈｅＲｅｃｏｇｎｉｔｉｏｎｏｆＡｎｃｉｅｎｔＣｈｉｎｅｓｅＣｈａｒａｃｔｅｒｓＵｓｉｎｇＣｅｌｌｕｌａｒＮｅｕｒａｌＮｅｔｗｏｒｋ（Ⅰ）ＷｕＸｉｎｙｕ；ＬｉｕＣｈｅｎ（ＤｅｐａｒｔｍｅｎｔｏｆＢａｓｉｃＣｏｕｒｃｅｓ，ＮａｎｊｉｎｇＩｎｓｉｔｕｔｅ...     

Response of a Submersed Macrophyte Hydrilla verticillata （L.f） Royle,to Sodium Dodecylbenzene Sulfonate Stress

The acute toxicity of Sodium dodecylbenzene sulfonate （SDBS） to subcamersed macrophyte Hydrilla verticillata （L.f） Royle was studied. Chlorophyll contents and the activities of 3 antioxidant enzymes： superoxide dismutase （SOD, EC 1.15.1.1）, catalase （CAT, EC 1.11.1.6）, peroxidase （POD, EC 1.11.1.7） in the leaves were investigated under different concentrations of SDBS, The chlorophyll contents in leaves of experimental plants decreased gradually, while the electrical conductivity of culture solution increased gradually with the increased dose of SDBS. Under higher concentrations of SDBS （32 mg/L and 128 mg/L） treatment, SOD lost its activities completely after 24 h. The native PAGE analysis indicated the diversity of POD isoenzymes was obvious under different concentrations of SDBS stress.     

Effects of Quenching Temperature and Time on Pore Diameter of Poly（3-hydroxybutyrate-co-3-hydroxyhexanoate） Porous Scaffolds and MC3T3-E1 Osteoblast Response to the Scaffolds

Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) scaffolds were prepared by thermally inducing phase separation (TIPS) for bone reconstruction. Scanning electron microscopy and porosity measurements were used to analyze the structure and properties of the scaffolds. The pore diameter of the scaffolds could be easily controlled by changing the quenching temperature and time. The biocompatibility was assessed by examining the proliferation and morphology of MC 3T3-E1 osteoprogenitor cells seeded on the scaffolds. Cultures grown in the presence of a source of phosphate ions showed the formation of a mineralized extracellular matrix. The results indicate that PHBHHx scaffolds prepared using TIPS are a promising candidate for bone reconstruction.     

The interdecadal trend and shift of dry/wet over the central part of North China and their relationship to the Pacific Decadal Oscillation （PDO）

Based on monthly precipitation and monthly mean surface air temperature (SAT),the dry/wet trends and shift of the central part of North China and their relationship to the Pacific Decadal Oscillation (PDO) from 1951 to 2005 have been analyzed through calculating surface wetness index (SWI). The results indicate that there was a prominent drying trend and an abrupt change in the analysis period. A per-sistent warming period with less precipitation from the mid and late 1970s to present was found,and a shift process exists from the wet to the dry in the central part of North China during 1951-2005. The transition is located in the mid to late 1970s,which should be related to the shift variation of large-scale climate background. The correlation analysis has brought about a finding of significant correlativity between PDO index (PDOI) and SAT,precipitation and SWI in this region. The correlation exhibits that the positive phase of PDOI (warm PDO phase) matches warming,less precipitation and the drought period,and the negative PDOI phase corresponds to low SAT,more precipitation and the wet period. The duration of various phases is more than 25 years. The decadal variation of sea surface temperature (SST) in the North Pacific Ocean is one of the possible causes in forming the decadal dry/wet trend and shift of the central part of North China.     

The use of electro-deoxidation in molten salts to reduce the energy consumption of solar grade silicon and increase the output of PV solar cells

Solar photovoltaics, based upon silicon, are the most popular form of solar cell with efficiencies around 20%. These efficiencies can be further increased by employing light trapping schemes to minimise optical losses through scattering and reflection which enhances the amount of light absorbed and number of photo-carriers generated. Typical approaches employ antireflection coatings (ARCs) or texturise the surface of the silicon disks, so that the structure consists of an array of needles which can absorb most of the light. Usually, these structures are created by leaching the silicon with hydrofluoric-based acids or by reactive ion etching (RIE) methods. This paper reviews some of the methods for improving the energy efficiency of silicon production, and describes the use of electro-deoxidation of SiO2 layers, on silicon, in molten calcium chloride to form nano-porous black silicon (b-Si) structures. By coating b-Si surface with TiO2, a common ARC, extremely black surfaces with negligible reflectance of about 0.1%, are produced, which can have applications for low-cost high efficiency solar cells.     

云南耳叶苔科Frullaniaceae植物区系

根据现有资料 ,云南耳叶苔科Frullaniaceae含有 2属、5 9种、3亚种、8变种和 2变型。其中中国新记录 4种 :波叶耳叶苔 (新拟名 )FrullaniaeymaeHatt.,微齿耳叶苔 (新拟名 )F .rhytidanthaHatt .,凹叶耳叶苔毛萼变种F .retusavar .hirsutaHatt .etThaith .,小褶耳叶苔 (新拟名 )F .appendistipulaHatt.,中国大陆 2个新记录种 :圆叶耳叶苔 (新拟名 )F .inoueiHatt.,缅甸耳叶苔 (新拟名 )F .berthoumieuiSteph .及 13个云南新记录种。 2个新种已另文发表 :高黎贡耳叶苔F .gaoligongensisBaietGao和无脊耳叶苔F .laevi- peri anthaBaietGao。云南耳叶苔科主要区系地理成分有 :热带亚洲成分 18种 ,东亚成分 13种及 2 4个中国特有种 (其中有 6个云南特有种 )。此外还有少量温带亚洲成分、北温带成分、泛热带成分和古热带成分。检视标本保存于昆明植物研究所和沈阳应用生态研究所     

晶体Si和GaAs太阳电池背场结构的研究

文章从理论和实验上分析了Si太阳电池和GaAs太阳电池各自背场结构特点，指出它们之间的异同。     

大气臭氧对太阳自转活动的响应．

采用交叉谱分析方法，通过年全球平均的大气臭氧总量和１０．７ｃｍ大阳通量两时间序列的对比分析发现，大气臭氧的短期变化和大阳自转活动之间有着极为密切的相关关系：大气臭氧准２７天周期变化和太阳１０．７ｃｍ辐射通量之间存在约１４０°的位相差，落后时间为１０．２天．／／关键词     

太阳能电池板跟踪与太阳相对地面的运动轨道研究

实验研究表明,跟踪太阳时太阳能电池板的输出功率要比电池板方位角固定时高出36.7%。因此,为了更加充分有效地利用太阳能,我们通过研究太阳与地球相对运动规律来确定如何选取太阳能电池方阵的方位角与倾斜角并以此设计出跟踪太阳的方案,达到提高电池板输出功率的目的。     

铼、钌太阳能电池染料稳定性电喷雾质谱研究

利用电喷雾质谱(ESI-MS)对敏化纳米二氧化钛太阳能电池用染料2,2′-联吡啶-4,4′-二羧酸乙酯的铼络合物(络合物1)和钌络合物(络合物2)进行了分析,通过变换不同的源内CID电压,研究了络合物及其配体的稳定性.结果表明,由于络合物1的空间结构相对拥挤,随着CID电压升高,其中的吡啶配体容易发生离解并形成稳定的联吡啶三羰基配位离子[(4,4-(′COOEt)2-bpy)Re(CO)3] .而络合物2在较高的CID电压下(110V)会发生联吡啶环上取代基的中性C2H4小分子丢失,其单电荷离子比二价电荷离子稳定.这些是影响太阳能电池用敏化染料稳定性的主要因素.     

纵坑切梢小蠹大发生原因探讨

本文从种群系统出发,全面分析了纵坑切梢小蠹与云南松的相互作用.及环境多种因素对该虫大发生的综合影响.认为在虫害发生初期,云南松树势衰弱是纵坑切梢小蠹大发生的基本条件,当虫害猖獗漫延时,该虫可以攻击并致死健康树.纵坑切梢小蠹种群数量便成为虫害进一步加剧的主要因素.气候、寄主抗性、林地条件、森林管理对害虫种群消长有重要影响.昆明地区气候条件对于纵坑切梢小蠹生长繁殖都非常有利,是该虫得以在短期内爆发成灾的主要原因.     

非线性介质对SU(2)非阿贝尔场的响应

将夸克介质视为非简谐振子模型，讨论了它对SU（2）非阿贝尔场的响应，采用微扰迭代法解出了方程的一，二，三级近似解，初步得出了这种响应的一些非线性特征。     

Down-conversion characteristics of Eu3+ doped M2Y2Si2O9 (M = Ba,Ca, Mg and Sr) nanomaterials for innovative solar panels

Down-conversion properties of Eu³⁺ doped M₂Y₂Si₂O₉ (M = Ba, Ca, Mg, Sr) phosphors have been investigated in detail. These phosphors were synthesized via the simple, fast and cost-effective sol-gel technique at a temperature of 950 °C. Color coordinates and emission color can be altered by the varying concentration of dopant ion in Ca₂Y₂Si₂O₉ phosphor. Optimum luminescence intensity was obtained when doping 0.03 mol of Eu³⁺ ion. Using the excitation wavelength of 395 nm, these silicates showed strong red color, pure and sharp spectral peaks in visible region due to ⁵D₀→⁷F_1-3 transitions of Eu³⁺ present in the lattice. Effect of reaction temperature on luminescence was also analyzed for these phosphors. The sharp peaks in the X-ray diffraction pattern indicated the high crystallinity of prepared phosphors. Ca₂Y₂Si₂O₉ has shown an orthorhombic crystal structure. The FTIR results confirmed the metal-oxygen vibrational modes available in the range of 400–1600 cm^?1. Transmission electron microscopy images have revealed that the variation of alkaline earth metal provided a very different crystal structure. Excellent down conversion response of these phosphor materials can provide a great significance in the application of the coming solar devices.     

不同Fe~(3+)浓度下赤潮异弯藻对阳光UVR的响应

探讨了不同Fe3+离子浓度环境下,赤潮异弯藻对阳光紫外辐射(ultraviolet radiation,UVR)的响应.结果发现,在Fe3+限制(5×10-3μmol/L)的情况下,阳光紫外辐射的存在,可以提高赤潮异弯藻的生长速率.而在Fe3+饱和(11.65μmol/L)的情况下,这一现象并不明显.说明Fe3+限制培养的细胞,对UVR的敏感性下降.细胞紫外吸收物质(MAAs)的合成受到Fe3+的调节.生长于Fe3+饱和环境下,接受全阳光辐射,胞内MAAs的含量增加明显,抵抗UVR的能力加强,生长加快.因此,赤潮异弯藻对UVR的响应机制,是受到细胞可利用Fe3+浓度调节的.