A human-ecology approach to environmental design──An integrative human-ecology design derived from Chinese agricultural culture experiences

Ａｈｕｍａｎ－ｅｃｏｌｏｇｙａｐｐｒｏａｃｈｔｏｅｎｖｉｒｏｎｍｅｎｔａｌｄｅｓｉｇｎ──Ａｎｉｎｔｅｇｒａｔｉｖｅｈｕｍａｎ－ｅｃｏｌｏｇｙｄｅｓｉｇｎｄｅｒｉｖｅｄｆｒｏｍＣｈｉｎｅｓｅａｇｒｉｃｕｌｔｕｒａｌｃｕｌｔｕｒｅｅｘｐｅｒｉｅｎｃｅｓ...     

Present status of aerosol research in China

１ＩｎｔｒｏｄｕｃｔｉｏｎＡｅｒｏｓｏｌｓｐｌａｙａｎｉｍｐｏｒｔａｎｔｒｏｌｅｉｎｃｌｉｍａｔｅｃｈａｎｇｅ，ａｉｒｑｕａｌｉｔｙ，ａｃｉｄｄｅｐｏｓｉｔｉｏｎ，ｖｉｓｉｂｉｌｉｔｙｒｅｄｕｃｔｉｏｎ，ａｎｄｃｌｏｕｄｐｒｏｃｅｓｅｓ．Ｔｈｅｙａｒ...     

PCDD/Fs in sodium pentachlorophenate(Na-PCP)and human blood , milk and sediment samples from Chinese schistosomiasis areas

ＰＣＤＤ／Ｆｓｉｎｓｏｄｉｕｍｐｅｎｔａｃｈｌｏｒｏｐｈｅｎａｔｅ（Ｎａ－ＰＣＰ）ａｎｄｈｕｍａｎｂｌｏｏｄ，ｍｉｌｋａｎｄｓｅｄｉｍｅｎｔｓａｍｐｌｅｓｆｒｏｍＣｈｉｎｅｓｅｓｃｈｉｓｔｏｓｏｍｉａｓｉｓａｒｅａｓＪｉａｎｇＫｅ；ＣｈｅｎＹｕｄｏｎ...     

Landscape ecological analysis of urban vegetation in Guangzhou, China

１ＩｎｔｒｏｄｕｃｔｉｏｎＬａｎｄｓｃａｐｅｅｃｏｌｏｇｙｉｓａｎｉｎｔｅｒｄｉｓｃｉｐｌｉｎａｒｙｓｕｂｊｅｃｔｃｈａｒａｃｔｅｒｉｚｅｄｗｉｔｈｓｐａｃｅ．Ｉｔｄｅａｌｓｗｉｔｈｔｈｅｉｎｔｅｒａｃｔｉｏｎｂｅｔｗｅｅｎｓｐａｔｉａｌｓｔｒｕｃｔ...     

Impacts of land cover change on plant and bird species diversity in Hainan Island,China

１ＩｎｔｒｏｄｕｃｔｉｏｎＬａｎｄｃｏｖｅｒｃｈａｎｇｅｈａｓａｎｉｎｃｒｅａｓｉｎｇｉｍｐａｃｔｏｎｆｏｒｅｓｔｅｃｏｓｙｓｔｅｍｓｗｏｒｌｄｗｉｄｅ．Ｔｈｅｄｅｓｔｒｕｃｔｉｏｎｏｆｎａｔｉｖｅｈａｂｉｔａｔｓｉｓｒｅｃｏｇｎｉｚｅｄａｓｏｎｅｏ...     

Immobilization of microorganisms using carrageenan gels coated with chitosan and application to biodegradation of 4 chlorophenol

Ｉｍｍｏｂｉｌｉｚａｔｉｏｎｏｆｍｉｃｒｏｏｒｇａｎｉｓｍｓｕｓｉｎｇｃａｒａｇｅｎａｎｇｅｌｓｃｏａｔｅｄｗｉｔｈｃｈｉｔｏｓａｎａｎｄａｐｐｌｉｃａｔｉｏｎｔｏｂｉｏｄｅｇｒａｄａｔｉｏｎｏｆ４ｃｈｌｏｒｏｐｈｅｎｏｌＷａｎｇＪｉａｎｌｏｎｇ...     

Prediction of aqueous solubility of PCBs based on molecular structure

The thermodynamic relationships among aqueous solubility and molar volume (MV) , total molecular surface area (TSA) and molecular connectivity index (MCI) for highly hydrophobic chemicals. PCBs are established and discussed, respectively. Good linear relationships exist among In Cs and MV, TSA or MCI.     

Effect of SO2 on performance of the turnip moth,Agrotis segetum Schiff

Effect of SO₂-enriched air on the turnip moth, Agrotis segetum Schiff.was investigated by rearing the larvae on rape leaves that had been exposed to 40 or 80 ppb of the air pollutant in field fumigation chambers. An examination on the 11th day showed that the larvae in both treatments survived more, developed markedly faster, their fresh v/eig'ht and mean relative growth rate were significantly greater than those of control insect. Improvement of their growth and development resulted in decrease of total larval duration by 0.5 - 1.0 day. Pupal and adult performances were little affected by SO₂ level to which larval food plant was exposed. Possible reason responsible for enhanced growth and development of the insect species was discussed.     

连续流光催化消毒器灭活E.coli及病毒的性能

紫外消毒是污水处理常用技术.紫外线仅能破坏微生物的遗传物质,阻断其繁殖,并不能彻底杀死微生物,一旦停止紫外光照射,微生物可在修复酶的作用下恢复活性.光催化过程能产生强氧化性·OH,破坏细胞壁和细胞膜,彻底杀死微生物.为考察光催化技术消毒效率、抑制复活性能及应用潜力,在市售紫外消毒器中安装了光催化组件,搭建了连续流动式光催化消毒器.以大肠杆菌(E.coli)和噬菌体为目标物评价其消毒能力.紫外剂量50 m J·cm-2条件下,初始浓度3.40×106CFU·m L-1的E.coli原水流经紫外消毒器后被去除4.12 log10的E.coli,而流经光催化消毒器后去除4.79 log10.同时光催化处理后E.coli的光复活率仅为紫外消毒后的17%.连续运行40 h的灭菌能力稳定.光催化设备对噬菌体F2和噬菌体MS2的去除率分别为6.37 log10和6.00 log10,表明该设备也具有病毒去除能力.     

Rhodococcus sp.BX2菌对乙腈的降解特性及降解途径研究

对Rhodococcus sp.BX2菌降解乙腈的特性及其降解途径进行了研究.结果显示,在底物浓度为800mg·L-1,接种量为1.0%,培养温度为35℃,环境pH为7.5的条件下,16h时Rhodococcus sp.BX2菌对乙腈的降解率为95.98%;添加葡萄糖可在培养初期加快Rhodococcus sp.BX2菌的生长和对乙腈的降解,蔗糖、乙酰胺和尿素对其影响不大.将BX2菌接种到含有高乙腈浓度(25000mg·L-1)的合成废水中,培养180h后,乙腈降解率可达88.59%.在催化反应60min后,Rhodococcus sp.BX2腈水合酶与腈水解酶的总酶活可达到422.81U·mL-1,对其相关基因序列的分析结果表明,Rhodococcus sp.BX2中同时存在腈水解酶基因和腈水合酶基因,因此,确定乙腈的降解主要由腈水合酶途径完成,可能同时存在腈水解酶的降解途径.