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661.
To better understand the attractiveness of host tree, Chinese white pines (Pinus armandi Fr.) to Chinese white pine beetle (Dendroctonus armandi Tsai and Li), the antennal responses of D. armandi to the host volatile, as well as the pure enantiomers and racemates of some monoterpenes, were examined using an electroantennogram
(EAG). EAG responses of male and female D. armandi to blended volatiles extracted from the host and some synthetic terpenes (α-phellandrene, (−)-β-pinene, (+)-α-pinene, (−)-α-pinene,
(−)-camphene, β-myrcene, (S)-(−)-limonene, (+)-camphene and (R)-(+)-limonene) showed significant variation due to different compound concentrations and sex of the beetles. EAG responses
to extracted blended volatiles were significantly greater in females than in males, but the EAG response was not always proportional
to the volatile concentration. At lower concentrations, females responded strongly to α-phellandrene and males to (−)-β-pinene,
while at higher concentrations, females responded most strongly to α-phellandrene and males to (+)-α-pinene. Females were
significantly responsive to (−)-α-pinene, α-phellandrene and (−)-camphene, while males were more responsive to (S)-(−)-limonene, (+)-α-pinene and (R)-(+)-limonene. The EAG responses of the female D. armandi to the volatile oil were significantly higher than that of the males, and the infested pine volatiles could evoke higher
EAG response. Most of the test compounds elicited similar responses, which suggested that several of the compounds may be
used in combination by D. armandi in habitat and/or host community location at the Qinling forest ecosystem. 相似文献
662.
膜生物反应器无剩余污泥排放的研究 总被引:42,自引:2,他引:40
本文介绍了以膜生物反应器为基础的剩余污泥产量最少或无剩余污泥产生的最新的污水处理理论和技术。从技术微生物基本生命活动的物质转化概念和细胞产生和平衡的理论,提出了确定维持微生物基本生命活动的物质转化系数的方法,从理论与实验上计实了膜生物反应器无剩余污泥排放的可能性。 相似文献
663.
Chen Xuemin Wu Weifeng Liu Yun Liu Chenrui Tian Jiang Li Feng Dang Zhi 《Environmental Chemistry Letters》2023,21(6):3077-3082
Environmental Chemistry Letters - Acid mine drainage is highly acidic and contains heavy metals, which can be harmful to soil, water, plants, and animals. To solve this issue, surface passivation... 相似文献
664.
Yuting Wei Xiao Tian Junbo Huang Zaihua Wang Bo Huang Jinxing Liu Jie Gao Danni Liang Haofei Yu Yinchang Feng Guoliang Shi 《Frontiers of Environmental Science & Engineering》2023,17(11):137
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HydroShare: Sharing Diverse Environmental Data Types and Models as Social Objects with Application to the Hydrology Domain
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668.
Regional Environmental Change - Using province-level yield data and daily weather data from 1980 to 2012, we investigated the responses of early rice, middle-season rice, and late rice yields to... 相似文献
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