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Bioleaching of spent Ni-Cd batteries and phylogenetic analysis of an acidophilic strain in acidified

ZHAO Ling, WANG Liang, YANG Dong, ZHU Nanwen

《环境科学与工程前沿(英文)》 2007年 第1卷 第4期   页码 459-465 doi: 10.1007/s11783-007-0073-6

摘要: Biohydrometallurgy is a novel method to recycle discarded batteries, in which sewage sludge is used as microorganisms and culture due to the presence of indigenous . A two-step continuous flow leaching system co

关键词: Biohydrometallurgy     discarded     indigenous     two-step continuous     presence    

基于系统发育和比较基因组分析揭示与发酵乳杆菌缓解结肠炎相关的关键基因 Article

赵岩, 张程程, 于雷雷, 田丰伟, 赵建新, 张灏, 陈卫, 翟齐啸

《工程(英文)》 2022年 第17卷 第10期   页码 170-182 doi: 10.1016/j.eng.2020.09.016

摘要:

越来越多的研究表明,发酵乳杆菌可以用于溃疡性结肠炎的预防和治疗。本研究中,我们从中国不同地区的人群粪便样本中分离出了105 株发酵乳杆菌,并对其基因组草图进行了测序。我们分析了这些菌株的泛基因组和系统发育特征,并对4 个模型菌株(发酵乳杆菌3872、CECT5716、IFO3956 和VRI003)也进行了分析。系统发育分析表明,发酵乳杆菌基因组的进化方向与宿主的地理位置、性别、族群和年龄没有明显的关系。我们挑选了3 株来自不同的系统发育支系的发酵乳杆菌(FWXBH115、FGDLZR121和FXJCJ61)和发酵乳杆菌模式菌株CECT5716,通过构建右旋糖酐硫酸钠(DSS)诱导的结肠炎小鼠模型,
探究这几株菌的抗炎和免疫调节活性。发酵乳杆菌FXJCJ61 和CECT5716 可以通过缓解所有结肠炎相关的组织学指标,保护黏膜完整性,增加肠道短链脂肪酸(SCFA),显著减轻结肠炎,而其他两株菌未能提供类似的保护作用。发酵乳杆菌FXJCJ61 和CECT5716 的抗炎机制与核转录因子kappa-B(NF-κB)信号通路激活以及促进白细胞介素10(IL-10)的产生有关。比较基因组分析结果表明,这些有益发酵乳杆菌的抗炎作用可能与一些特定基因有关。

关键词: 发酵乳杆菌     结肠炎     抗炎     系统发育分析     比较基因组分析    

Prevalence and drug resistance characteristics of carbapenem-resistant Enterobacteriaceae in Hangzhou, China

null

《医学前沿(英文)》 2018年 第12卷 第2期   页码 182-188 doi: 10.1007/s11684-017-0529-4

摘要:

With the abuse of antimicrobial agents in developing countries, increasing number of carbapenem-resistant Enterobacteriaceae (CRE) attracted considerable public concern. A retrospective study was conducted based on 242 CRE strains from a tertiary hospital in Hangzhou, China to investigate prevalence and drug resistance characteristics of CRE in southeast China. Bacterial species were identified. Antimicrobial susceptibility was examined by broth microdilution method or epsilometer test. Resistant β-lactamase genes were identified by polymerase chain reaction and sequencing. Genotypes were investigated by phylogenetic analysis. and were the most prevalent types of species, with occurrence in 71.9% and 21.9% of the strains, respectively. All strains exhibited high resistance (>70%) against β-lactam antibiotics, ciprofloxacin, trimethoprim–sulfamethoxazole, and nitrofurantoin but exhibited low resistance against tigecycline (0.8%) and minocycline (8.3%). A total of 123 strains harbored more than two kinds of β-lactamase genes. , , , and were the predominant genotypes, with detection rates of 60.3%, 61.6%, 43.4%, and 16.5%, respectively, and were highly identical with reference sequences in different countries, indicating potential horizontal dissemination. IMP-4 was the most frequent class B metallo-lactamases in this study. In conclusion, continuous surveillance and effective prevention should be emphasized to reduce spread of CRE.

关键词: Enterobacteriaceae     carbapenem     β-lactamase genes     phylogenetic analysis    

Phylogenetic diversity of NO reductases, new tools for monitoring, and insights into NO production in

《环境科学与工程前沿(英文)》 2022年 第16卷 第10期 doi: 10.1007/s11783-022-1562-3

摘要:

● 548 representative nor genes were collected to create complete phylogenetic trees.

关键词: N2O     Greenhouse gas     NO reductase     NO dismutase     Primer     Crystal structure    

Microbial community structure and dynamics of starch-fed and glucose-fed chemostats during two years of continuous operation

Min GOU,Jing ZENG,Huizhong WANG,Yueqin TANG,Toru SHIGEMATSU,Shigeru MORIMURA,Kenji KIDA

《环境科学与工程前沿(英文)》 2016年 第10卷 第2期   页码 368-380 doi: 10.1007/s11783-015-0815-9

摘要: The microbial community structures of two mesophilic anaerobic chemostats, one fed with glucose, the other with starch as sole carbon sources, were studied at various dilution rates (0.05–0.25 d for glucose and 0.025–0.1 d for starch) during two years continuous operation. In the glucose-fed chemostat, the aceticlastic methanogen spp. and hydrogenotrophic methanogen spp. predominated at low dilution rates, whereas spp. and the hydrogenotrophic spp. predominated together when dilution rates were greater than 0.1 d . Bacteria affiliated with the phyla Bacteroidetes, Spirochaetes, and Actinobacteria predominated at dilution rates of 0.05, 0.1, and 0.15 d , respectively, while Firmicutes predominated at higher dilution rates (0.2 and 0.25 d ). In the starch-fed chemostat, the aceticlastic and hydrogenotrophic methanogens coexisted at all dilution rates. Although bacteria belonging to only two phyla were mainly responsible for starch degradation (Spirochaetes at the dilution rate of 0.08 d and Firmicutes at other dilution rates), different bacterial genera were identified at different dilution rates. With the exception of Archaea in the glucose-fed chemostat, the band patterns revealed by denaturing gradient gel electrophoresis (DGGE) of the microbial communities in the two chemostats displayed marked changes during long-term operation at a constant dilution rate. The bacterial community changed with changes in the dilution rate, and was erratic during long-term operation in both glucose-fed and starch-fed chemostats.

关键词: microbial community     glucose degradation     starch degradation     dilution rate     continuous methane fermentation     phylogenetic analysis    

2008—2017年河南省腹泻患者来源单相鼠伤寒沙门菌ST34的基因组流行病学特征研究 Article

穆玉娇, 李瑞超, 杜鹏程, 张沛, 李岩, 崔生辉, Séamus Fanning, 白莉

《工程(英文)》 2022年 第15卷 第8期   页码 34-44 doi: 10.1016/j.eng.2022.05.006

摘要:

单相鼠伤寒沙门菌(Salmonella enterica serovar 4,[5],12:i:-, S. 4,[5],12:i:-)作为鼠伤寒沙门菌的变种,已成为全球公共卫生领域备受关注的新兴血清型,其在中国的基因组流行病学特征尚不明确。本研究对2008-2017年分离自腹泻患者的100株序列型34型(ST34)S. 4,[5],12:i:-开展的流行情况、耐药表型和群体基因组学的分析发现:多数菌株对氨苄西林、链霉素、磺胺类和四环素耐药(耐药表型ASSuT);基于贝叶斯系统发育分析,中国分离株起源于欧洲谱系,进化为携带不同耐药基因和质粒的两个分支。进化支1中gyrA基因点突变和质粒介导喹诺酮耐药基因携带率较高,而进化支2中多数菌株fljBA操纵子插入了耐药编码区域[编码ASSuT耐药表型,包括blaTEM-1B(氨苄西林耐药)、strAB(链霉素耐药)、sul2(磺胺类耐药)和tet(B)(四环素耐药)],导致了血清型单相变异。IncHI2质粒是该血清型中导致细菌严重耐药的主要可移动遗传元件,普遍存在于进化支1的分离株中。综上,多重耐药S. 4,[5],12:i:-菌株在中国的流行情况日益严重,且进化为携带不同耐药基因的多个谱系,需采取有效措施控制此人畜共患病原体的传播,并基于“同一健康”策略开展监测及制定干预策略。

关键词: 单相鼠伤寒沙门菌     ST34     流行     系统发育     中国谱系    

15th International Congress for Stereology and Image Analysis 第十五届国际体视学与图像分析学术会议

会议日期: 2019年05月27日

会议地点: 丹麦/奥胡斯

主办单位: 国际体视学与图像分析学会(ISSIA)

Decomposition analysis applied to energy and emissions: A literature review

《工程管理前沿(英文)》   页码 625-639 doi: 10.1007/s42524-023-0270-4

摘要: Decomposition analysis has been widely used to assess the determinants of energy and CO2 emissions in academic research and policy studies. Both the methodology and application of decomposition analysis have been largely improved in the past decades. After more than 50 years’ developments, decomposition studies have become increasingly sophisticated and diversified, and tend to converge internally and integrate with other analytical approaches externally. A good understanding of the literature and state of the art is critical to identify knowledge gaps and formulate future research agenda. To this end, this study presents a literature survey for decomposition analysis applied to energy and emission issues, with a focus on the period of 2016–2021. A review for three individual decomposition techniques is first conducted, followed by a synthesis of emerging trends and features for the decomposition analysis literature as a whole. The findings are expected to direct future research in decomposition analysis.

关键词: index decomposition analysis     structural decomposition analysis     production decomposition analysis     energy     CO2 emissions    

Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

《能源前沿(英文)》 2016年 第10卷 第4期   页码 424-440 doi: 10.1007/s11708-016-0423-9

摘要: This paper presents the simulation of major mechanical properties of a flux reversal generator (FRG) viz., computational fluid dynamic (CFD), thermal, and vibration. A three-dimensional finite element analysis (FEA) based CFD technique for finding the spread of pressure and air velocity in air regions of the FRG is described. The results of CFD are mainly obtained to fine tune the thermal analysis. Thus, in this focus, a flow analysis assisted thermal analysis is presented to predict the steady state temperature distribution inside FRG. The heat transfer coefficient of all the heat producing inner walls of the machine are evaluated from CFD analysis, which forms the main factor for the prediction of accurate heat distribution. The vibration analysis is illustrated. Major vibration sources such as mechanical, magnetic and applied loads are covered elaborately which consists of a 3D modal analysis to find the natural frequency of FRG, a 3D static stress analysis to predict the deformation of the stator, rotor and shaft for different speeds, and an unbalanced rotor harmonic analysis to find eccentricity of rotor to make sure that the vibration of the rotor is within the acceptable limits. Harmonic analysis such as sine sweep analysis to identify the range of speeds causing high vibrations and steady state vibration at a mode frequency of 1500 Hz is presented. The vibration analysis investigates the vibration of the FRG as a whole, which forms the contribution of this paper in the FRG literature.

关键词: flux reversal generator     air velocity     computation fluid dynamics     thermal analysis     vibration analysis     finite element analysis    

Review of sentiment analysis: An emotional product development view

《工程管理前沿(英文)》   页码 592-609 doi: 10.1007/s42524-022-0227-z

摘要: Conveying consumers’ specific emotions in new products, referred to as emotional product development or emotional design, is strategically crucial for manufacturers. Given that sentiment analysis (SA) can extract and analyze people’s opinions, sentiments, attitudes, and perceptions regarding different products/services, SA-based emotional design may provide manufacturers with real-time, direct, and rapid decision support. Despite its considerable advancements and numerous survey and review articles, SA is seldom considered in emotional design. This study is among the first efforts to conduct a thorough review of SA from the view of emotional design. The comprehensive review of aspect-level SA reveals the following: 1) All studies focus on extracting product features by mixing technical product features and consumers’ emotional perceptions. Consequently, such studies cannot capture the relationships between technical and emotional attributes and thus cannot convey specific emotions to the new products. 2) Most studies use the English language in SA, but other languages have recently received more interest in SA. Furthermore, after conceptualizing emotion as Kansei and introducing emotional product development and Kansei Engineering, a review of the data-driven emotional design is then conducted. A few efforts start to study emotional design with the help of SA. However, these studies only focus on either analyzing consumers’ preferences on product features or extracting emotional opinions from online reviews, thus cannot realize data-driven emotional product development. Finally, some research opportunities are provided. This study opens a broad door to aspect-level SA and its integration with emotional product development.

关键词: sentiment analysis     emotion     product development     Kansei Engineering    

Jack up reliability analysis: An overview

Ahmad IDRIS, Indra Sati Hamonangan HARAHAP, Montasir Osman Ahmed ALI

《结构与土木工程前沿(英文)》 2018年 第12卷 第4期   页码 504-514 doi: 10.1007/s11709-017-0443-5

摘要: Jack up is a mobile unit used for oil and gas exploration and production in offshore fields. On demand, the unit is moved and installed in a given location and used for a period up to 12 months before being un-installed and moved to another location. Due to its mobility and re-usability, when the unit is offered for use in a given offshore location, its suitability in terms of safe operation is evaluated in accordance with the guidelines of Site Specific Assessment (SSA) of jack up. When the unit failed safety assessment criteria, the guideline recommended that it is re-assessed by increasing the complexity of the assumptions and methods used. Reliability analysis theories are one of the frameworks recommended for the safety assessment of the units. With recent developments in uncertainty and reliability analysis of structures subject to stochastic excitation, this study aims at providing a review on the past developments in jack up reliability analysis and to identify possible future directions. The results from literature reviewed shows that failure probabilities vary significantly with analysis method used. In addition, from the variants of reliability analysis approach, the method of time dependent reliability for dynamic structures subject to stochastic excitation have not been implemented on jack ups. Consequently, suggestions were made on the areas that need further examination for improvement of the efficiency in safety assessment of the units using reliability theories.

关键词: jack up     reliability analysis     uncertainty analysis     review of jack up    

Systems biomedical analysis of Schistosoma japonicum

Ze-Guang HAN MD,

《医学前沿(英文)》 2010年 第4卷 第2期   页码 157-165 doi: 10.1007/s11684-010-0034-5

摘要: Human schistosomiasis, caused mainly by three principal species including , , and , remains a major public health concern worldwide. is prevalent in southern China, being a major disease risk for 66 million people. The blood fluke has a complex life cycle for survival: as a free-living form in fresh water and as a parasite in the snail intermediate and vertebrate definitive hosts. Systems-based biomedical analyses, including genomic, transcriptomic, proteomic and metabonomic approaches, have been performed on the schistosome. These comprehensive investigations have not only characterized the genomic features but also chartered gene and protein expression profiles across genders and developmental stages. The integration of the huge information will lay a global and solid foundation for the molecular architecture of the biology, pathogenesis, and host-parasite interactions of the human blood fluke, which will facilitate the development of a new antischistosomal vaccine and drugs as well as diagnostic markers for the treatment and control of schistosomiasis.

关键词: Schistosoma japonicum     systems biomedical analysis    

Numerical analysis and experimental investigation of modal properties for the gearbox in wind turbine

Pengxing YI,Peng HUANG,Tielin SHI

《机械工程前沿(英文)》 2016年 第11卷 第4期   页码 388-402 doi: 10.1007/s11465-016-0404-z

摘要:

Wind turbine gearbox (WTG), which functions as an accelerator, ensures the performance and service life of wind turbine systems. This paper examines the distinctive modal properties of WTGs through finite element (FE) and experimental modal analyses. The study is performed in two parts. First, a whole system model is developed to investigate the first 10 modal frequencies and mode shapes of WTG using flexible multi-body modeling techniques. Given the complex structure and operating conditions of WTG, this study applies spring elements to the model and quantifies how the bearings and gear pair interactions affect the dynamic characteristics of WTGs. Second, the FE modal results are validated through experimental modal analyses of a 1.5 WM WTG using the frequency response function method of single point excitation and multi-point response. The natural frequencies from the FE and experimental modal analyses show favorable agreement and reveal that the characteristic frequency of the studied gearbox avoids its eigen-frequency very well.

关键词: wind turbine gearbox     modal analysis     finite element analysis     modal frequency     bearing equivalence    

标题 作者 时间 类型 操作

Bioleaching of spent Ni-Cd batteries and phylogenetic analysis of an acidophilic strain in acidified

ZHAO Ling, WANG Liang, YANG Dong, ZHU Nanwen

期刊论文

基于系统发育和比较基因组分析揭示与发酵乳杆菌缓解结肠炎相关的关键基因

赵岩, 张程程, 于雷雷, 田丰伟, 赵建新, 张灏, 陈卫, 翟齐啸

期刊论文

Prevalence and drug resistance characteristics of carbapenem-resistant Enterobacteriaceae in Hangzhou, China

null

期刊论文

Phylogenetic diversity of NO reductases, new tools for monitoring, and insights into NO production in

期刊论文

Microbial community structure and dynamics of starch-fed and glucose-fed chemostats during two years of continuous operation

Min GOU,Jing ZENG,Huizhong WANG,Yueqin TANG,Toru SHIGEMATSU,Shigeru MORIMURA,Kenji KIDA

期刊论文

2008—2017年河南省腹泻患者来源单相鼠伤寒沙门菌ST34的基因组流行病学特征研究

穆玉娇, 李瑞超, 杜鹏程, 张沛, 李岩, 崔生辉, Séamus Fanning, 白莉

期刊论文

15th International Congress for Stereology and Image Analysis 第十五届国际体视学与图像分析学术会议

2019年05月27日

会议信息

黄幼麟:Dynamic Consumer Preferences for Electric Vehicles — A Longitudinal Analysis(2020年7月12日)

2022年06月10日

会议视频

福田敏男:Bio Cell Analysis and Assembly by Micro and Nano Robotic Technology(2019年8月25日)

福田敏男(院士)

2021年01月20日

会议视频

Decomposition analysis applied to energy and emissions: A literature review

期刊论文

Flow, thermal, and vibration analysis using three dimensional finite element analysis for a flux reversal

B. VIDHYA,K. N. SRINIVAS

期刊论文

Review of sentiment analysis: An emotional product development view

期刊论文

Jack up reliability analysis: An overview

Ahmad IDRIS, Indra Sati Hamonangan HARAHAP, Montasir Osman Ahmed ALI

期刊论文

Systems biomedical analysis of Schistosoma japonicum

Ze-Guang HAN MD,

期刊论文

Numerical analysis and experimental investigation of modal properties for the gearbox in wind turbine

Pengxing YI,Peng HUANG,Tielin SHI

期刊论文