Thermography of aged contacts of high voltage equipment

New developments in diagnostic tools and systems are necessary for a reliable and economic evaluation of the condition of equipment in power systems. In a research project a tool for the condition of contacts of centre break disconnector, which is used under normal operation by the aid of a thermography measurement system, has been developed. In this paper, an overview about the laboratory investigation of the temperature load behaviour and the environmental influence on-site for new and aged disconnector contacts are given. A condition evaluation tool for contacts, which was the aim of the project, has been created. The basic method for the evaluation is presented, and also two additional easements for a fast identification of suspect contacts are presented. With this evaluation tool and the usage of a thermography based measuring system, a condition based maintenance strategy can be applied, whereby an early detection of damages is possible and so power quality and reliability increase.      

隔膜电解法净化再生镀锌钝化液的研究

采用隔膜电解法净化再生国营１５９厂的镀锌钝化液，结果表明，此法具有设备简单，技术可行，经济合理，不需要化学药品，没有二次污染等优点，其最佳工艺条件是；电流密度６Ａ／ｄｍ＾２，槽电压４．５Ｖ，温度４０℃，电解时间为８小时。通过方法可以使废钝化液净化再生直接回用于钝化槽。     

江西城镇老年公寓的需求分析预测

近年来,人口老龄化问题越来越突出。加强老年公寓的建设,是解决传统家庭尤其是独生子女家庭父母养老的发展趋势。同时,加强老年公寓的筹划与建设,也有利于保持经济稳定增长、缓解社会就业压力。本文通过Markov链模型和年龄移算法等方法测算老年人口比例,对我省城镇老年公寓的需求进行分析预测,并提出了相应的发展目标建议。     

Pre rigor processing,ageing and freezing on tenderness and colour stability of lamb loins

Forty eight lamb carcasses with temperature and pH monitored were obtained from two commercial plants. At 24 h post mortem both loins (M. longissimus) from each carcass were randomly allocated to a) unaged frozen at − 18 °C, (b) aged at − 1.5 °C for 2 weeks before freezing, (c) aged for 3 weeks before freezing and (d) aged for 9 weeks without freezing. Shear force, colour stability and proteolysis were analyzed. Carcasses with a slower temperature and more rapid pH decline had more calpain autolysis, slightly higher shear force and less colour stable compared to that counterpart in general (P < 0.05). However, the shear force values of the loins were all acceptable (< 6 kgF) regardless of different pre rigor processing and ageing/freezing treatments. Furthermore, the loins aged for 2 weeks-then-frozen/thawed had a similar shear force to the loins aged only for 9 weeks suggesting that ageing-then-freezing would result in equivalent tenderness compared to aged only loins for the long-term storage.     

A comparative study on the antioxidative and anti‐allergic activities of fresh and aged black garlic extracts

The antioxidative and anti‐allergic activities of fresh and aged black garlic extracts were investigated. The garlic samples were extracted with 70% ethanol (v/v) and the total phenolic content was measured. The antioxidant capacity of extracts was assessed by determining the scavenging activities on 1,1‐diphenyl‐2‐picrylhydrazyl and hydroxyl radicals, ferricyanide reducing power, ferrous ion‐chelating ability and inhibitory effect on linoleic acid peroxidation. The anti‐allergic activity of extracts was analysed by measuring their inhibitory effects against β‐hexosaminidase release. The aged black garlic exhibited significantly higher phenolic content and greater antioxidative activity than fresh garlic. Both garlic extracts showed strong antioxidant capacity in a dose‐dependent manner. On the other hand, a considerably higher suppression of β‐hexosaminidase release was found in fresh garlic extract at lower concentration compared with that of the black garlic. Results of this study illustrate that ageing of garlic could enhance its antioxidant capacity, but could decrease its anti‐allergic activity.     

Anthocyanin composition in aged Chilean Cabernet Sauvignon red wines

Anthocyanins in aged Cabernet Sauvignon red wines were studied by HPLC–MS. The major anthocyanin in 6, 7, and 8 year old red wine extracts was the dimer vitisin A produced by condensation of malvidin-3-O-glucoside mediated by pyruvic acid. In aged wine, the content of malvidin-3-O-glucoside decreased with age with a concomitant increase of vitisin A. The latter is accompanied by several condensation products with molecular weight up to 1500 m/z. Differential pulse voltammetry indicated that aged wines have lower antioxidant capacity than young wine (400 mV), but higher than malvidin-3-O-glucoside (483 mV). Tafel’s plots showed that the electrochemical process occurring in aged wines is different from young wines. Six, seven and eight year old wines show similar behaviour with plots of 234, 177 and 188 mV/dec, respectively. These values are higher than the expected 120 mV/dec corresponding to a first electronic transfer but smaller compared to the 523 mV/dec corresponding to young wine.     

探索养老服务设施规划的“浦东模式”

人口老龄化趋势对城市规划工作提出挑战。以浦东新区养老服务设施规划为例,探讨大都市发展养老设施的新模式：在借鉴国内外经验和调查老年日常行为和需求分析基础上,探索符合浦东实际的养老设施体系和规划指标,以及空间布局方案和实施策略;并对浦东模式的内涵进行解析,提出进一步完善养老设施规划的若干思考。     

“十二五”时期上海市社会化养老模式初探——以长宁区为例

随着上海市老龄人口总量的持续攀升以及第一代独生子女父母为主体的“老龄潮”的到来,居家养老模式已难以满足当前特大城市的养老需求.未来数年内,上海将通过加速发展社会化养老模式、鼓励民间资本进入养老产业等方式纾解养老压力.以在全国范围内率先推行社会化养老模式的长宁区为例,对该区推行社会化养老模式过程中出现的若干问题进行研究和总结,并从政策措施制定、指标体系设计、空间规划布局等方面对社会化养老模式提出意见及建议,以期站在城市规划的视角为以上海为代表的特大型城市的养老事业提供一家之言.     

补钙的误区

分析了当前在中老年、儿童补钙、补钙与疾病、补钙与饮食等方面存在的误区 ,提出补钙应慎重 ,要科学 ,以免乱补造成不良后果 ,为正确补钙提出了较为全面的科学依据。