Summary of the Closing Session

Plausible costs of photovoltaic power plants of concentration are presented. Costs are based as much as possible on the recent experience of solar thermal plants. Efficiencies, on the existing world experience of PV power plants. The result is that the costs of concentrating photovoltaic plants should be of 0.08 ECUs/ kWh, about 1/3 of that of flat module plants, and of the same order of magnitude, even lower, than those attributed to solar thermal plants of present technology.

For the future, high concentration systems based on Si or tandem cells seem to be the most promising, also in the range of costs of the advanced solar thermal plants.     

激光与顺铂共同作用下对癌细胞的影响

通过对CNE_2细胞的实验研究,探讨了激光与顺氨氯铂的治癌机理,指出它实质上是一种光敏治疗。     

^134Cs在小鼠睾丸的滞留过程及其诱发精原细胞染色体畸变

本文研究了＾１３４Ｃｓ在小鼠睾丸内的滞留过程及其所诱发的精原细胞染色体畸变效应。在４７ｄ的观察期内，得出＾１３４Ｃｓ在睾丸内的滞留分数方程可拟合为Ｒ（ｔ）＝０．００４８ｅｘｐ（－０．１３８ｔ），式中Ｒ（ｔ）为溜分数，ｔ为注入后时间（ｄ），由此可得出＾１３４Ｃｓ在睾丸内的半滞留期为５．０２ｄ；＾１３４Ｃｓ可诱发精原细胞２染色体畸变，其畸变类型以染色单体型畸变为主；＾１３４Ｃｓ所致的精原细胞染色体畸变     

固定化细胞珠体的改性研究

以添加天然物质和化学处理改变凝胶结构提高海藻酸钙珠体的机械强度；以海藻酸钠为添加剂降低了制备聚乙烯醇珠体的难度，并从技术、经济两方面比较了聚乙烯醇和海藻酸钙二种固定化细胞．为其能够实际应用于生物反应器提供了可能．     

碱性二次锌电池隔膜材料耐枝晶性

本文研究了SL—080接枝膜与水化三醋酸纤维素膜在锌二次电池中阻挡枝晶的性质。结果表明,两类隔膜材料阻枝晶的过程不同。前者与层数呈对数关系,后者则呈线性关系。指出减少对数型隔膜的厚度而增加其层数可显著地改善隔膜层的耐枝晶穿透能力。     

锂电池的电解质

锂有足够高的负电位,故锂电池的特点是容量大,电压高。锂的负电位高,使得对电解质的还原稳定性需提出相应的要求。本文论述了一次和二次锂电池用的电解质的性能、研究与发展。     

高温锂—氧化铜电池的研制

本文介绍了新研制的锂——氧化铜(Li/CuO)电池。该电池具有工作温度范围宽广,高温性能好,储存寿命长,比能量高等特点。特别是在耐高温性能方面,为国内所有化学电源产品之首。作者对电池的结构设计和工艺原理作了扼要介绍,并提出了若干技术关键。     

微分脉冲极谱法测定电液中痕量铅

本文采用F—78型脉冲极谱仪,对锰—锌干电池电液(净化前和净化后)中痕量铅进行了微分脉冲极谱测定。电液中存在的ZnCl_2可作为支持电解质,在此底液中,Pb~(2+)(?)原的峰电位为—0.45V(相对Ag-AgCl电极、实验值),可采用标准加入法进行测定。方法可靠,简便快速。     

PVA-based hydrogels for tissue engineering: A review

Poly (vinyl alcohol) (PVA) is a hydrophilic polymer with excellent biocompatibility and has been applied in various biomedical areas due to its favorable properties. PVA-based hydrogels have been recognized as promising biomaterials and suitable candidates for tissue engineering applications and can be manipulated to act various critical roles. However, due to some disadvantages (i.e., lack of cell-adhesive property), they needs further modification for desired and targeted applications. This review highlights recent progress in the design and fabrication of PVA-based hydrogels, including crosslinking and processing techniques. Finally, major challenges and future perspectives in tissue engineering are briefly discussed.     

Use of Direct Viable Count Methodology With Ozonation in Drinking Water

Viable cells were detected by direct viable count methodology on ozonated anthracite taken from an active dual media rapid sand filter. Also, at least a thousand fold more cells were determined to be viable by direct viable count methodology than by the heterotrophic plate count in raw water which had been exposed to ozone. This suggests that bacterial cells were not killed as quickly by ozone as previously thought, and that the direct viable count may have a place in assessing the effectiveness of killing bacteria by ozone.