Dual innervation of spinal ganglion neurons on perineum and bladder

Experiments were performed on 13 Wister rats. Fastblus (FB) was injected into subcutaneous tissue in perineum area and nuclear yellow (NY) was injected into subserous lamina of the bladder wall, respectively. FB, NY and FB+ NY were mostly found in the spinal ganglions of L6, S1 ans S2 segments. The numbers of FB, NY and FB+ NY labeled cells were 146, 186 and 81, in a total of 463 labeled cells and their proportion was 40%. 51% and 9%, respectively. The result indicates that the spinal ganglion neurons dually innervate both the somatic and visceral tissues, and the convergence of somato-visceral sensory pathways might occur in the spinal ganglion cells.     

绿色荧光蛋白基因在烟草植株中的表达

用冻融法将含有绿色荧光蛋白基因的质粒ｐＧＬ２－ＧＳ导入农杆菌菌株ＬＢＡ４４０４ （ｐＴＯＫ２３３），两个质粒发生同源重组，形成一个新的二元载体ｐＴＯＫ２３３－ＧＳ．农杆菌菌株ＬＢＡ４４０４ （ｐＴＯＫ２３３－ＧＳ） 经叶盘法转化烟草，筛选具有卡那霉素抗性的愈伤组织，诱导成苗．ＰＣＲ 扩增发现，绿色荧光蛋白基因在９０％ 的再生植株中存在．在荧光显微镜下，使用蓝色激发光观察再生植株的徒手切片和压片发现，８０ ％ 以上的再生植株都能不同程度地发出绿色荧光．多数植株的根尖和叶脉都发光，一些植株的气孔、叶表皮或叶绒毛也发光     

新型带荧光基团蒽的偶氮双酚类杯芳烃的合成研究(Ⅱ)

报道新型带荧光基团蒽的偶氮双酚类杯芳烃：５、１１、１７、２３－四对苯甲酸蒽甲酯偶氮基杯〔４〕间苯二酚芳烃的合成，研究关键因素对反应的影响，产物通过ＵＶ、ＩＲ、＾１Ｈ－ＮＭＲ、ＭＳ和荧光光谱进行表征。     

Optical Properties of Fluorescent Dyes

Fluorescent dyes have been widely used these years. Because of the special optical performance, conventional CCM systems seem to be unable to predict the recipes of fabrics dyed with fluorescent dyes. In order to enhance the functions of CCM systems, the optical properties of fluorescent dyes in their absorption region were investigated. It has been found that there was a fixed maximum absorption wavelength for each fluorescent dyes whatever its concentration is. Both absorption region and maximum absorption wavelength of the dyes in solution are the same to those in fabric, and that the absorption is directly proportional to the concentration of the dye. So the optical properties obtained in solutions cna be applied for describing the optics performance of fluorescent dyes in fabrics.     

荧光法检测辛硫磷残留量及其分析应用

在pH为6.00的Britton-Robinson缓冲溶液中,水溶性荧光素(SF)与一定浓度的溴化十六烷基三甲基铵(CTMAB)反应,使其荧光强度剧增,当在SF-CTMAB中加入辛硫磷(phoxim)后,体系的荧光强度明显降低,且降低程度与辛硫磷的加入量呈良好的线性关系,据此建立了测定辛硫磷残留量的新方法.在优化实验条件下,线性范围为0.032~0.72 mg.L-1,检出限为0.026 mg.L-1,已用于大米和土壤中辛硫磷残留量的检测,回收率在97.5%~100.5%之间,相对标准偏差为1.3%~2.2%,符合农药残留分析的要求.     

洗涤剂用荧光增白剂

概述了洗涤剂用荧光增白剂（ＦＷＡ）的类型及其特性，给出了各大类型的化学结构及合成方法，指出了我国荧光增白剂今后的发展方向．     

Analysis of the Cotton E6 Promoter

An E6 gene from sea island cotton （Gossypium barbadense） was expressed specifically in cotton fiber cells to transfer functions to cultivated species for better transgenic engineering. The regulatory activity of the E6 promoter region was then studied by isolating a 614-bp fragment of the 5＇-flanking region from upland cotton （Gossypium hirsutum CR1-12） to produce a green fluorescent protein （GFP） reporter construct for analysis of tissue-specific expression in transgenic tobacco seedlings. Fluorescent analyses indicate that the relatively short E6 promoter is sufficient to direct green fluorescent protein expression specifically in the leaf trichomes （hair cells） of the transgenic tobacco plants. As cotton fibers are also unicellular trichomes that differentiate from epidermal cells of developing cotton ovules, the result suggests that the relatively short E6 promoter can serve as a fiber-specific expression promoter for genetic engineering to improve cotton fiber quality.     

5-(4-硝基苯偶氮)-8-水杨醛缩氨基喹啉新试剂的合成及表征

合成了新型荧光试剂5-(4-硝基苯偶氮)-8-水杨醛缩氨基喹啉(p-NPSAQ).通过IR、1HNMR确证了产物结构.初步测试了其荧光性能.     

模n剩余系中LehmerDH数的同余性

设奇数n≥3存在原根,对每一整数1≤a＜n且(a,n)=1,一定存在唯一整数1≤＜n,使a≡1(modn).若a与具有相反的奇偶性,称数a为Lehmer DH数.本文的主要目的是利用Kloostermann和估计等,研究模n剩余系中Lehmer DH数的同余性.     

毛细管气相色谱法测定桔梗中六六六异构体的含量

运用毛细管气相色谱法测定了桔梗中甲体六六六(α-BHC)、乙体六六六(β-BHC)、丙体六六六(γ-BHC)、丁体六六六(δ-BHC) 4种异构体的残留量.样品以丙酮提取,在氯化钠存在下,以二氯甲烷进行液-液分配,提取液以浓硫酸净化,采用SE-30弹性石英毛细管柱分离样品,ECD检测六六六残留量.检出限为1.6×10-14～3.8×10-13 g/mL,回收率为85.24%～99.86%,峰面积相对标准偏差为0.61%～2.2%.