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Unraveling the skatole biodegradation process in an enrichment consortium using integrated omics and culture-dependent strategies

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Journal of Environmental Sciences 2023年第5期127卷 688-699页

作者： Qiao Ma Nan Meng jiancheng su Yujie Li Jiazheng Gu Yidi Wang Jingwei Wang Yuanyuan Qu Zelong Zhao Yeqing sun Institute of Environmental Systems Biology College of Environmental Science and EngineeringDalian Maritime UniversityDalian 116026China Liaoning Key Lab of Germplasm Improvement and Fine Seed Breeding of Marine Aquatic Animals Liaoning Ocean and Fisheries Science Research InstituteDalian 116023China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

3-Methylindole(skatole)is regarded as one of the most offensive compounds in odor *** is feasible for skatole removal but the functional species and genes responsible for skatole degradation remain *** this study,an efficient aerobic skatole-degrading consortium was *** and Pseudomonas were identified as the two major and active populations by integrated metagenomic and metatranscriptomic *** analyses indicated that the skatole downstream degradation wasmainly via the catechol pathway,and upstream degradation was likely catalyzed by the aromatic ring-hydroxylating oxygenase and flavin *** binning and gene analyses indicated that Pseudomonas,Pseudoclavibacter,and Raineyella should cooperate with Rhodococcus for the skatole degradation ***,a pure strain Rhodococcus ***1 was successfully obtained which could utilize skatole as the sole carbon *** genome sequencing showed that strain DMU1 was the predominant population in the *** crude enzyme and RT-qPCR assays indicated that strain DMU1 degraded skatole through the catechol ortho-cleavage ***,our results suggested that synergistic degradation of skatole in the consortium should be performed by diverse bacteria with Rhodococcus as the primary degrader,and the degradation mainly proceeded via the catechol pathway.

关键词： Skatole Biodegradation Bacterial consortium Metagenomics and metatranscriptomics Rhodococcus

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一种新的窄带雷达高速机动多目标检测算法

西安电子科技大学学报 2017年第2期44卷 20-26页

作者：章建成苏涛西安电子科技大学雷达信号处理国家重点实验室陕西西安710071

笔者提出一种高速匀加速机动多目标检测算法.首先,通过速度搜索和二阶keystone变换校正距离徙动.距离徙动校正后,目标所在的距离单元方位向回波可建模为线性调频信号.其次,对方位向回波依次进行Lvs变换,目标能量在中心频率-调频率域积... 详细信息

笔者提出一种高速匀加速机动多目标检测算法.首先,通过速度搜索和二阶keystone变换校正距离徙动.距离徙动校正后,目标所在的距离单元方位向回波可建模为线性调频信号.其次,对方位向回波依次进行Lvs变换,目标能量在中心频率-调频率域积累出峰值,根据峰值在调频率维的位置可得到一个加速度的估计值.最后,根据加速度估计值构造补偿函数对多普勒频率徙动进行补偿,并通过快速傅里叶变换实现相参积累,然后再进行目标检测与径向速度估计.该算法与Radon-分数阶傅里叶变换算法相比,具有计算量小、抗噪声性能强的优点.仿真与实测数据处理结果验证了该算法的有效性.

关键词：机动目标检测距离徙动多普勒频率徙动

Effects of Different Planting Years on Physicochemical Properties and Enzyme Activities in Soil of Rice-Cherry Tomato Rotation

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Open Journal of Ecology 2023年第6期13卷 334-344页

作者： Xiao Deng Chunyuan Wu Yi Li Huadong Tan jiancheng su Environmental and Plant Protection Institute Chinese Academy of Tropical Agricultural Sciences Haikou China Hainan Danzhou Tropical Agro-Ecosystem National Observation and Research Station Danzhou China Key Laboratory of Low-Carbon Green Agriculture in Tropical Region of China Ministry of Agriculture and Rural Affairs Haikou China Hainan Key Laboratory of Tropical Eco-Circular Agriculture Haikou China National Agricultural Experimental Station for Agricultural Environment National Long-Term Experimental Station for Agriculture Green Development Danzhou China Hainan Star Farmer Ecological Technology Co. Ltd. Haikou China

Crop rotation periodicity has always been one of the research focuses currently. In this study, the physicochemical properties, nutrient contents and enzyme activities were investigated in soils from rice-cherry tomato rotation for one year (1a), three years (3a), five years (5a), seven years (7a) and ten years (10a), respectively. The major objective was to analyze the optimal rotation years of rice-cherry tomato from soil perspective, so as to provide theoretical basis for effectively avoiding continuous cropping obstacles of cherry tomato via studying the response characteristics of soil physicochemical properties, nutrient contents and enzyme activities to planting years of rice-cherry tomato rotation system. The results were as follows: 1) Soil pH value was increased year by year during 1a to 5a, reached the highest value 5.32 at 5a. However, soil acidity was sharply enhanced during 7a to 10a (P P •kgsup>-1sup> at 5a. 3) The content of soil available phosphorus was increased year by year with increasing of crop rotation years, and increased by 110% to 173% during 3a to 10a (P P P sulting in a new continuous cropping obstacle of cherry tomato.

关键词： Rice-Cherry Tomato Rotation Planting Years Soil Physicochemical Properties Enzyme Activity

我国城市地下空间易燃有毒气体在线监测现状及建议

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仪器仪表与分析监测 2006年第2期 44-46页

作者：苏健成广州市城市排水监测站广东广州510010

随着我国城市化程度不断的加大,人们对城市地下空间的关注也随之不断增加,有效、安全、协调地开发和利用城市地下空间资源显得十分重要,也是实现可持续发展战略目标的重要体现。本文主要介绍目前国内大中城市地下空间实施可燃有毒气体... 详细信息

随着我国城市化程度不断的加大,人们对城市地下空间的关注也随之不断增加,有效、安全、协调地开发和利用城市地下空间资源显得十分重要,也是实现可持续发展战略目标的重要体现。本文主要介绍目前国内大中城市地下空间实施可燃有毒气体在线监测的现状及相关技术,并进一步论述其在大中城市中实施的可行性建议。

关键词：城市地下空间易燃有毒气体在线监测建议

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北京财富中心写字楼超高层钢结构施工技术

施工技术 2013年第1期42卷 24-26,31页

作者：汪道金苏建成中国新兴建设开发总公司北京100036

以北京财富中心写字楼工程为例,介绍了钢结构施工技术在该工程的应用。从深化设计、加工制作、运输及堆放、安装、测量及校正、焊接等几个方面对组合钢板墙的施工进行了详细的阐述。最后对高层及超高层建筑钢结构施工中的一些注意要点... 详细信息

以北京财富中心写字楼工程为例,介绍了钢结构施工技术在该工程的应用。从深化设计、加工制作、运输及堆放、安装、测量及校正、焊接等几个方面对组合钢板墙的施工进行了详细的阐述。最后对高层及超高层建筑钢结构施工中的一些注意要点进行了总结。

关键词：高层建筑钢结构组合钢板墙深化设计焊接施工技术

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汽车技术状况变化及影响因素

汽车零部件 2014年第9期 78-79,72页

作者：苏建成安徽蚌埠汽车士官学校装备保障系安徽蚌埠233011

分析了汽车技术状况变化的原因及规律,阐述了汽车技术状况变化的影响因素,从而可以在使用中预防零部件的早期损坏。

关键词：汽车零部件技术状况正确使用

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环境水质自动监测质量控制措施分析

环境与发展 2020年第7期32卷 135-136页

作者：苏建成上海市水环境监测中心青浦分中心上海201700

在监测环境水质中,为尽可能提高其监测效率,同时获得更理想的监测成效,目前上海正在积极将自动化技术以及其他各种先进技术运用在环境水质监测中。而加强其质量控制则是保障环境水质自动监测得以顺利落实的关键,因此本文将在说明环境水... 详细信息

在监测环境水质中,为尽可能提高其监测效率,同时获得更理想的监测成效,目前上海正在积极将自动化技术以及其他各种先进技术运用在环境水质监测中。而加强其质量控制则是保障环境水质自动监测得以顺利落实的关键,因此本文将在说明环境水质自动监测质量控制重要意义的基础上,根据笔者多年工作实践,重点对环境水质自动监测的质量控制措施进行简要分析研究。

关键词：环境水质自动检测质量控制