自装饰复合硅酸盐外墙保温板的研制

根据自装饰复合硅酸盐外墙保温板的结构与设计原理,研究了复合保温板的物理性能和保温性能,试验结果表明,对同一外墙主体进行外保温时,在不增加外墙总厚度的基础上,保温板的平均传热系数比胶粉聚苯颗粒外墙外保温体系减小25%以上,该复合保温板的表观密度、压缩强度和不透水性均达到或超过JG158—2004《胶粉聚苯颗粒外墙外保温系统》中对相关指标的要求。该复合保温板简化了施工工艺。

Influence of decorative materials on cooling load of residential apartments

The influence of a polyvinyl chloride（PVC）-panel on the cooling load of a residential apartment in Mashad,Iran,is analyzed by the DeST-h software.And the summer natural ventilation of the residential apartment is investigated to determine the wind speed into the apartment through the computational fluid dynamics software.The evaluation results of the indoor wind velocity show that most parts of the apartment are comfortable.The cooling load of the penthouse can be decreased about 10.5% or 6.5% when an air layer exists or does not exist between the ceiling and the PVC-panel,respectively,indicating that the existence of the air layer can decrease the cooling load.However,the effect of the increase in the air layer＇s thickness on the decrease in the cooling load is obvious.Adding a thin layer of air between the ceiling and the PVC-panel is a good step toward sustainable buildings.

Effect of poly(ethylene glycol) modified polyethylenimine polyelectrolyte complex on pharmaceutical characteristics and uptake on breast cancer cell

Cationic polyethylenimine （PEI） with dextran fluorescein anionic （DFA） or oligodeoxynucleotide （ODN） could form polyelectrolyte complex by self-assembly as a gene delivery vector. This study was designed to investigate the effects on pharmaceutical characteristics and cell uptake PEI after a long-circulation modification with poly（ethylene glycol） （PEG）. DFA or ODN reacted with PEI or PEI-PEG to form polyelectrolyte complexes. Surface characters of these complexes and the retardation of ODN by PEI and PEI-PEG were evaluated. The uptake rates of DFA/PEI and DFA/PEI-PEG complexes by MCF-7 cells were evaluated by flow cytometry. Confocal laser scanning microscopy was utilized to visualize the internalization of these complexes. ODN/PEI complex showed the dependence of their size and ξ potential on the N/P ratio. ODN/PEI-PEG complex were much less affected by N/P ratio and their size was around 30 100 nm. PEI and PEI-PEG retarded ODN even at N/P ratio as low as 4, and complete retardation was found at N/P ratio of 8. The uptake rate by MCF-7 cells was direct correlated to the DFA concentration and incubation time, and the uptake rate could exceed 99% under the selected condition. The results in this study showed that PEI self-assembly polyelectrolyte complex after stealth or long circulation modification may increase the ability as a gene vector to delivery genes into cells.

An Endemic Plant of Ermenek Region （Turkey）, Muscari muscarmi： Economic Importance, and Is There a Useful Way Out Cultivation in Its Natural Habitats？

Turkey is one of the most floristically rich countries in the world with endemic plants. Approximately one third of its flora is endemic. The Muscari muscarimi which belongs to the Liliaceae family is one of its most prominent endemic geophyte plants which originates in southwestern of Turkey where it is found in rocky places like Ermenek, Ba？yayla （Büyükkarap？nar village）, Sar？veliler. This species is the most sweetly scented member of the Liliaceae family, having something of the musk scent. Also, this plant locally is used in traditional medicine as antirheumatic, stomachic, diuretic and expectorant. In addition to this, it has also been used as food for humans and animals, ornamental plants in gardens. Morphologically, it has 3-6 linear-lanceolate, grayish-green leaves per plant and bulbs of 2-4 cm in diameter with thick fleshy perennial roots which delve down into the rocky ground of their natural habitats. The chemical is composed of polysaccharides, homoisoflavanons, glycosides etc. Main components of M. muscarimi were identified as （E）-β-ocimene （t-36%）, methyl salicylate （1-21%）, E-methyl isoeugenol （4-22%） and benzyl benzoate （7-56%）. The picking up of the plant bulbs from their natural habitats is prohibited, in accordance with international agreements for the protection of endangered geophytes. The overly habitat destruction in native growing area threatened the existence of the species categories. It is known that in vitro bulblet production in Muscari muscarimi is low. This is difficult for its cultivation in native Ermenek area districts. Recent works show that the culturing immature Musari muscarimi embryos on different growth media could be considered as a useful method for in vitro propagation. As a result, the geophytes, such as M. muscarimi, are eligible widely for perfume production and in the pharmaceutical industry as well as for ornamental flowers. Because of this plant economic importance, bulbs growing and cultivation in their natural habitats could be discussed in this study.

Fabrication of ferrocenyl glutathione modified electrode and its application for detection of cadmium ions

l＇-cysteaminecarbonyl-1-glutathionecarbonyl-ferrocene （Fc-GSH） was synthesized from ferrocene dicarboxylic acid and reduced glutathione （GSH） with 4 steps. IR and 1^H-NMR were used to characterize the products. Then Fc-GSH was immobilized on the surface of gold electrode. Cyclic votammetry （CV） was adopted to investigate the electrochemical properties of this Fc-GSH modified electrode in the absence and presence of Cd^2＋ aqueous solutions. The peak oxidation potential （Ea） and reduction potential （Ec） of Fc-GSH modified electrode were observed at Ea= 0.74 V and Ec= 0.64 V （vs Ag/AgCl） before the accumulation of Cd^2＋. This redox process is a monoelectron chemical reaction. The anodic shift is about 80 mV in the presence of 20 nmol/L of Cd^2＋ aqueous solution. Moreover, this shift is in proportion to the concentration of Cd^2＋ when the concentration of Cd^2＋ is lower than 20 nmol/L. So the modified electrode can be used as probes to detect cadmium ions with the limit of 0.1 nmol/L by cyclic voltammetry.