检索结果-南通市图书馆

Nitrifying population dynamics in a redox stratified membrane biofilm reactor(RSMBR)for treating ammonium-rich wastewater

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2011年第1期5卷 48-56页

作者： rongchang wang Xinmin ZHAN Yalei ZHANG Jianfu ZHAO Department of Civil Engineering National University of IrelandGalwayIreland State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze Aquatic EnvironmentMinistry of Education of ChinaCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Nitrogen removal performance and nitrifyingpopulation dynamics were investigated in a redox stratifiedmembrane biofilm reactor(RSMBR)under oxygen limitedcondition to treat ammonium-rich *** theNH_(4)^(+)-N loading rate increased from 11.1±1.0 to 37:2±3:2 gNH_(4)^(+)-N·m^(-2)·d^(-1),the nitrogen removal inthe RSMBR system increased from 18.0±9.6 mgN·d^(-1)to 128.9±61.7 mgN·d^(-1).Shortcut nitrogen removal wasachieved with nitrite accumulation of about22:3±5:3 mgNO_(2)^(-)-N·*** micrographsshowed the stratified distributions of nitrifiers anddenitrifiers in the membrane aerated biofilms(MABs)atday 120,i.e.,ammonia and nitrite oxidizing bacteria(AOBand NOB)were dominant in the region adjacent to themembrane,while heterotrophic bacteria propagated at thetop of the ***-time qPCR results showed that theabundance of amoA gene was two orders of magnitudehigher than the abundance of nxrA gene in the ***,the nxrA gene was always detected during theoperation time,which indicates the difficulty of completewashout of NOB in *** growth of heterotrophicbacteria compromised the dominance of nitrifiers inbiofilm communities,but it enhanced the denitrificationperformance of the RSMBR *** a highammonia loading together with oxygen limitation wasfound to be an effective way to start nitrite accumulation inMABs,but other approaches were needed to sustain orimprove the extent of nitritation in nitrogen conversion inMABs.

关键词： ammonium-rich wastewater membrane biofilm reactor nitrification redox stratification shortcut nitrogen removal

Kinetic Studies on Ligand Substitution Reactions of Metallothioneins with DTPA and EDTA

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 1990年第1期6卷 67-72页

作者： Li rongchang, Gao Fei and wang Kui (Department of Inorganic Chemistry, Beijmg Medical University, Beijing)

Cd, Zn-thionelns were isolated from the rat liver by improved Winge method and purified further. The composition was determined. The mobilization of Cd ions from the Cd, Zn-metallothioneins was studied with spectrophotometric method. The results show that the reaction of DTP A or EDTA with Cd, Zn-thioneins occurs through three steps. The first step follows pseudo-first order reaction with association mechanism. The formation constants and the dissociation rate constants of the relevant intermediate ternary complexes and apparent rate constants, Kapp were determined. The properties and structure of Cd, Zn-thioneins and ligands with low molecular weights affect the values of Kapp.

关键词： Metallothionein Substitution reactions Kinetics

Risk factors for early-onset colorectal cancer:A large-scale Chinese cohort study

在线全文

学校读者我要写书评

暂无评论

Journal of the National Cancer Center 2023年第1期3卷 28-34页

作者： Zhe Pan Junfeng Huang Mingkai Huang Zhiyuan Yao Jiongqiang Huang Jingsong Chen Xiaoli Yu rongchang wang Department of Radiation Oncology Fudan University Shanghai Cancer CenterShanghaiChina Department of Oncology Shanghai Medical CollegeFudan UniversityShanghaiChina Shanghai Key Laboratory of Radiation Oncology ShanghaiChina State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina Department of Cardiology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Key Laboratory for Biological Targeted Therapy of Education Ministry and Hubei Province WuhanChina Department of Hepatobiliary and Pancreatic Surgery People’s Liberation Army General HospitalBeijingChina Department of Gastrointestinal Surgery The First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina

Background:The incidence of early-onset colorectal cancer(EOCRC)has increased globally since the early *** examining the risk factors would be helpful for risk stratification and the development of per-sonalized colorectal cancer screening ***:We performed a prospective study of the Chinese population aged 30-50 years to identify potential risk factors during a median follow-up of 9.1 *** compared the distribution of demographic characteris-tics,lifestyle factors,dietary habits,and medical history among 222 EOCRC cases and 87,833 normal *** adjusted Cox hazard models were used for estimating EOCRC risks of each risk ***:Our final analyses indicated that participants with a higher body mass index(HR,1.04;95%CI:1.00,1.08),regular alcohol consumption(HR,1.69;95%CI:1.12,2.91),higher intake of fish(HR,1.64;95%CI:1.01,2.67),hypertension(HR,1.99;95%CI:1.04,3.81),diabetes(HR,2.20;95%CI:1.08,4.49),and first-degree relatives with cancer(HR,1.70;95%CI:1.23,2.36)were at higher risk of ***:We identified several modifiable as well as nonmodifiable risk factors,such as higher BMI,alcohol and fish consumption,hypertension,and diabetes,were associated with EOCRC.

关键词： Early-onset colorectal cancer Epidemiology Screening China Kadoorie Biobank

ON THE APPLICATION OF GENERALIZED INVERSE FOR COMPUTING EIGEN-SENSITIVITY

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Solida Sinica 1994年第4期7卷 292-305页

作者： wang rongchang (Tongji University,Shanghai 200092,P.R.China)wang Wenliang (Fudan University,Shanghai 200433,P.R.Chian) Tongji University Shanghai 200092 China Fudan University Shanghai 200433 China

In this paper the mathematical definition of the minimum energy generalized inverse is given and its application for computing eigen-sensitivity is *** comparing it with the others,this paper clarifies the merits of t... 详细信息

关键词： minimum energy inverse orthogonal decomposition eigenvector derivative

菌藻共生系统削减抗生素类污染物的去除途径及胁迫响应

在线全文

学校读者我要写书评

暂无评论

化工进展 2023年第1期42卷 469-479页

作者：应璐瑶王荣昌同济大学环境科学与工程学院长江水环境教育部重点实验室上海200092

菌藻共生系统不仅能够高效去除污水中的氮磷、重金属、抗生素等污染物,而且还能够捕集并固定二氧化碳,因而受到日益广泛的关注。本文介绍了菌藻共生系统对抗生素类污染物的去除途径,包括生物降解、生物吸附、生物累积等,其中生物降解是... 详细信息

菌藻共生系统不仅能够高效去除污水中的氮磷、重金属、抗生素等污染物,而且还能够捕集并固定二氧化碳,因而受到日益广泛的关注。本文介绍了菌藻共生系统对抗生素类污染物的去除途径,包括生物降解、生物吸附、生物累积等,其中生物降解是菌藻共生系统去除抗生素的最主要途径;同时简述了降解抗生素的生物反应器类型,主要可分为悬浮生长系统和固定化生长系统。本文还重点介绍了菌藻共生系统应对抗生素胁迫的短期和长期响应机制,短期响应主要是通过产生活性氧(ROS)并激活SOS响应,长期响应则具体表现在抗生素抗性基因的富集转移和微生物群落的演替进化等方面。本文为菌藻共生系统用于去除废水中抗生素类污染物提供了理论依据和技术参考。

关键词：菌藻共生系统废水处理抗生素抗性基因胁迫响应

基于参数模型和独立分量分析的事件相关诱发电位单次提取

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

生物医学工程学杂志 2006年第6期23卷 1222-1227页

作者：王荣昌都思丹南京大学电子科学与工程系南京210093

我们针对脑电事件相关电位(ERP)这种信噪比极低的信号检测问题,提出了两种ERP信号单次提取方法,能非常有效地同时去除自发脑电、眼动伪迹和工频噪声三种常见噪声。(1)首次对自发脑电、眼动伪迹和工频噪声这三种常见成分连同事件相关电... 详细信息

我们针对脑电事件相关电位(ERP)这种信噪比极低的信号检测问题,提出了两种ERP信号单次提取方法,能非常有效地同时去除自发脑电、眼动伪迹和工频噪声三种常见噪声。(1)首次对自发脑电、眼动伪迹和工频噪声这三种常见成分连同事件相关电位同时进行ARX建模,利用基于最小二乘(LS)的ARX算法进行参数辨识获得提取结果;(2)利用独立分量分析,采用FastICA算法进行事件相关电位的提取。明确指出ICA分解的一些重要分解特性及其内在机理,针对实际情况对FastICA算法进行了改进,实现了分解结果对ERP成分的自适应映射。数值仿真实验结果表明两种方法均有较高的信号分解提取能力。

关键词：事件相关电位 ARX模型独立分量分析 FastICA算法

Formation of domain structure of erythrocyte membrane in Wistar rat fed with CeCl_3per os

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2000年第5期45卷 426-429页

作者： CHENG Yi, LIU Maozi, LI You, LI rongchang, BAI Chunli & wang Kui National Research Laboratories of Natural and Biomimetic Drugs, Beijing Medical University, Beijing 100083, China Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China Correspondence should be addressed to wang Kui National Research Laboratories of Natural and Biomimetic Drugs Beijing Medical University Beijing China Institute of Chemistry Chinese Academy of Sciences Beijing China

To explore the possibility of absorption of lanthanides via digestive duct and their effects on one membrane structure and permeability of erythrocytes, the fine structure of erythrocyte membrane from Wistar rats, fed for 70 days of daily administration per os with 20 mg CeCl3/kg weight, was imaged by means of atomic force microscopy and FT-IR deconvolution spectra. The results show that, although the erythrocytes maintain the intact shape, the change OT secondary structure, aggregation and crosslinking of the protein particles of membrane surface and the enlarged lipid regions lead to the domain structure formation. This structure might be responsible for the increasing permeability of erythrocyte membrane.

关键词： AFM FT-IR CeCl3 domain structure Wistar rat erythrocyte.

在线全文

学校读者我要写书评

暂无评论

基于双流融合网络的单兵伪装偏振成像检测

光学学报 2022年第9期42卷 185-197页

作者：王荣昌王峰任帅军王勇中国人民解放军陆军炮兵防空兵学院信息工程系安徽合肥230031 偏振光成像探测技术安徽省重点实验室安徽合肥230031

单兵伪装目标与背景之间在颜色上有高度的相似性,目标具有高度复杂的姿态,而且存在遮挡问题,这些问题使得单兵伪装目标检测较传统目标检测有很大的挑战性。针对上述问题,提出基于偏振信息和RGB(Red,Green,Blue)信息的深度学习算法,同时... 详细信息

单兵伪装目标与背景之间在颜色上有高度的相似性,目标具有高度复杂的姿态,而且存在遮挡问题,这些问题使得单兵伪装目标检测较传统目标检测有很大的挑战性。针对上述问题,提出基于偏振信息和RGB(Red,Green,Blue)信息的深度学习算法,同时构建单兵伪装目标偏振图像数据集CIP3K(Multicam型迷彩伪装数据集和Woodland型迷彩伪装数据集)。基于Faster R-CNN(Faster Region-Convolutional Neural Network)提出一种双流特征融合网络TSF-Net,其能够融合目标偏振特征信息和RGB特征信息。在CIP3K数据集上进行大量实验,用来测试TSF-Net模型与其他检测模型的性能。实验结果表明,相较于Faster R-CNN,TSF-Net模型在两个数据集上的平均检测精度分别提高了8.2个百分点和8.8个百分点,且优于一些主流目标检测模型。

关键词：机器视觉单兵伪装检测偏振成像卷积神经网络数据集

污水处理中菌藻共生系统去除污染物机理及其应用进展

在线全文

学校读者我要写书评

暂无评论

环境科学学报 2018年第1期38卷 13-22页

作者：王荣昌程霞曾旭同济大学环境科学与工程学院长江水环境教育部重点实验室上海200092 同济大学生物膜技术研究所污染控制与资源化研究国家重点实验室上海200092

菌藻共生系统不仅能够吸收空气中的CO_2,高效去除污水中的氮磷营养物质,而且能够有效去除重金属、抗生素等,因而在污水处理领域日益受到广泛的关注.本文从菌藻之间相互作用关系出发,介绍了用于污水处理时藻类选择的依据,及在污水处理中... 详细信息

菌藻共生系统不仅能够吸收空气中的CO_2,高效去除污水中的氮磷营养物质,而且能够有效去除重金属、抗生素等,因而在污水处理领域日益受到广泛的关注.本文从菌藻之间相互作用关系出发,介绍了用于污水处理时藻类选择的依据,及在污水处理中对N、P营养物质、抗生素、重金属等污染物的去除机理,综述了菌藻系统在污水处理中的应用进展,以期为菌藻共生系统在污水处理中的推广应用提供参考.

关键词：菌藻共生系统菌藻生物膜重金属难降解有机物