检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

MBBR在卡鲁塞尔氧化沟提标改造中的应用

中国给水排水 2020年第6期36卷 112-117页

作者：苏鹏路晖杨永刚吴迪太原首创污水处理有限责任公司山西太原030006 青岛思普润水处理股份有限公司山东青岛266555

北方某卡鲁塞尔氧化沟污水厂采用MBBR进行提标改造,生化系统改造中保持厌氧区停留时间不变,缺氧区停留时间由3.07 h增加到11.34 h,好氧区投加SPR-Ⅱ型悬浮载体,系统末端增加连续流砂滤池。工艺改造后,在进水水质略有提高的情况下,出水CO... 详细信息

北方某卡鲁塞尔氧化沟污水厂采用MBBR进行提标改造,生化系统改造中保持厌氧区停留时间不变,缺氧区停留时间由3.07 h增加到11.34 h,好氧区投加SPR-Ⅱ型悬浮载体,系统末端增加连续流砂滤池。工艺改造后,在进水水质略有提高的情况下,出水COD、NH3-N、TN、TP和SS平均值分别为35、1.1、10.1、0.4和5.1 mg/L,基本达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。其中好氧段有显著的同步硝化反硝化现象,可去除2~5 mg/L的TN;缺氧段内存在明显的反硝化除磷现象,TP去除率达87%。改造后节能降耗明显,电费减少0.095元/m^3,药剂费减少0.299元/m^3,合计减少运行成本0.394元/m^3。

关键词：移动床生物膜工艺卡鲁塞尔氧化沟提标改造悬浮载体

在线全文

学校读者我要写书评

暂无评论

谈污水提升泵站设计与泵型比选

工程建设与设计 2009年第9期 93-95页

作者：苏群勇漳州市建筑设计院福建漳州363000

以学府路污水提升泵站为例,阐述了该工程建设的必要性,点明实地环境、社会情况对泵站工程存在制约性。通过对污水泵型的比选,结合PLC、MCC技术,使泵站实现技术可靠、经济合理、运行稳定、管理简单、高效节能、操作方便、成本低、占地少... 详细信息

以学府路污水提升泵站为例,阐述了该工程建设的必要性,点明实地环境、社会情况对泵站工程存在制约性。通过对污水泵型的比选,结合PLC、MCC技术,使泵站实现技术可靠、经济合理、运行稳定、管理简单、高效节能、操作方便、成本低、占地少等特点,进一步推广潜水污泵在给排水工程中的应用。

关键词：泵站设计泵型比选

在线全文

学校读者我要写书评

暂无评论

西准噶尔哈图金矿床后期变化研究

新疆地质 2012年第3期30卷 317-319页

作者：聂晓勇苏大勇付于真中国地质大学地质过程与矿产资源国家重点实验室北京100083 武警黄金第八支队新疆乌鲁木齐830057

研究发现后期岩浆热液作用是造成哈图金矿床两类金矿体之一的石英脉型矿体的产生,构造活动对金矿体后期变化的影响较小,含矿石英脉上部因风化剥蚀作用消失,勘查中需要考虑矿床后期变化因素。

关键词：西准噶尔哈图金矿改造

Predictive model of re-hospitalization in patients with coronary artery disease combined with heart failure

在线全文

学校读者我要写书评

暂无评论

South China Journal of Cardiology 2021年第4期22卷 248-255页

作者： CHEN Shu-ling YANG Xu-xi su Zhi-qi LIU Jin WANG Bo YIN Chang su Min-ling ZUO yong-zhen XU You-lan CHEN Hai-fen Guangdong Provincial Cardiovascular Institute Guangdong Provincial People's Hospital(Guangdong Academy of Medical Sciences)Guangzhou 510180GuangdongChina

Background The number of patients with coronary artery disease(CAD)complicated with heart failure(HF)in China is large,the prognosis is poor,and the re-hospitalization rate is *** study established a predictive model of re-hospitalization factors for patients with CAD and *** A total of 326 patients with CAD and HF who were hospitalized in the Department of Cardiology of Guangdong Provincial People.s Hospital from2019 to 2020 and were *** medical records of patients were collected by electronic medical record system and followed up for 6 ***-wise logistic regression analysis was used to select the potential predictors of *** risk factors related to re-hospitalization of CAD with HF(Psuch patients.

关键词： heart failure coronary artery disease re-hospitalization predictive model

高速无接触式电磁耦合器的磁场计算及实验研究

在线全文

学校读者我要写书评

暂无评论

微特电机 2011年第3期39卷 1-3页

作者：李勇邢敬娓韩素芳陆永平哈尔滨工业大学黑龙江哈尔滨150001

在所研制的高速旋转设备中需要用到一个耦合器,完成高速状态下二段机械轴的耦合与分离。设计了一种新型的无接触式电磁耦合器,以电磁线圈作为控制输入,便于实现自动控制,具有非接触、低噪声、自动过载保护等特点。利用Ansoft软件进行了... 详细信息

在所研制的高速旋转设备中需要用到一个耦合器,完成高速状态下二段机械轴的耦合与分离。设计了一种新型的无接触式电磁耦合器,以电磁线圈作为控制输入,便于实现自动控制,具有非接触、低噪声、自动过载保护等特点。利用Ansoft软件进行了建模和磁场计算,研制了样机并完成了实验测试,实验结果证明该新型电磁耦合器原理是正确的,具有很好的工程实用价值。

关键词：无接触电磁式耦合器 Ansoft

高温超导电机磁体支撑结构焊接残余应力分析及影响研究!

在线全文

学校读者我要写书评

暂无评论

武汉理工大学学报 2012年第2期34卷 121-124,139页

作者：周勇谢峰苏浩叶志刚武汉船用电力推进装置研究所武汉430064

焊接残余应力不仅可能使高温超导电机磁体支撑结构产生裂纹,还可能与外加载荷叠加后改变磁体支撑结构的承载能力。应用轴对称模型及单元生死技术,对高温超导电机磁体支撑结构进行了焊接数值模拟,得到了焊缝残余应力的分布规律,同时在结... 详细信息

焊接残余应力不仅可能使高温超导电机磁体支撑结构产生裂纹,还可能与外加载荷叠加后改变磁体支撑结构的承载能力。应用轴对称模型及单元生死技术,对高温超导电机磁体支撑结构进行了焊接数值模拟,得到了焊缝残余应力的分布规律,同时在结构强度分析中考虑了焊接残余应力的影响。数值模拟结果表明:最大残余Mises应力出现在焊缝区域,远离焊缝区的应力几乎为零;整体退火对焊接残余Mises应力的降低非常有效;焊接残余应力和外载荷作用下的Mises应力进行了叠加,导致磁体支撑结构的强度明显下降。研究结果为磁体支撑结构的设计、生产工艺的优化及降低焊接残余应力提供了理论依据。

关键词：高温超导磁体支撑结构焊接残余应力单元生死

The interaction of laminin and its membrane receptor on mouse macrophage membrane studied by STM and FRAP~1

在线全文

学校读者我要写书评

暂无评论

Cell Research 1993年第1期3卷 21-26页

作者： WEI XINHUA,yong ZHAO,XIAOMING DONG,YAXIAN su,ZILI MA,CHANGXIN ZHU,SHIJINPANGDept. of Cell Biology, Beijing Medical University, Beijing100084, China.Beijing Vacuum Physics Lboratory, Academia Sinica,Beijing 100083, China. Dept. of Cell Biology Beijing Medical University Beijing China Research Center of Material Science Science & Technology Section Beijing Institute of Technology Beijing China Beijing Vacuum Physics Laboratory Academia Sinica Beijing China

The variation of membrane surface and lateral diffusion of membrane protein was studied after the interaction of laminin with its membrane receptor in mouse macrophages. A pattern of membrane surface which showed smaller and bigger peaks was obtained by scanning tunneling microscope(STM), looking like the domains of lipid groups and proteins in the model of fluid mosaic biomembrane. Some even more higher and wider peaks projected out from the membrane surface in STM image after the interacting of laminin with membrane receptor were, probably, the complexes of laminin and membrane receptor. Furthermore, the decreased lateral diffusion coefficient value (D) was obtained by fluorescence recovery after photobleaching (FRAP) after the laminin was reacted with membrane receptor. This phenomenon provides an evidence that the complexes of laminin and its membrane receptor were located on the membrane of macrophages. So we could consider that the laminin is combined with membrane receptor leading to the variation in the properties of membrane surface.

关键词： laminin receptor macrophage STM FRAP.

Distribution patterns of landslides triggered by the 2022 Ms 6.8 Luding earthquake,Sichuan,China

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain Science 2023年第3期20卷 607-623页

作者： ZHANG Jian-qiang YANG Zong-ji MENG Qing-kai WANG Jiao HU Kai-heng GE yong-gang su Feng-huan ZHAO Bo ZHANG Bo JIANG Ning HUANG Yu MING Zai-yang ZHANG Yi-fan LIU Zhen-xing WU Chun-hao ZHOU Wen-tao LIANG Xin-yue suN Yu-qing YANG Lian-bing YAO Hong-kun FENG Pei-hua LIU Jia-li Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Bejing 100049China East China University of Technology Nanchang 330013China Institute of Geographic Sciences and Natural Resources Research Beijing 100101China Chongqing Jiaotong University Chongqing 400074China

At 12:52 pm on September 5,2022,an Ms 6.8 earthquake occurred in Luding County,Sichuan Province,*** on high-resolution aerial photographs and satellite imageries obtained after the earthquake,as well as field investigation,a total of 8685 earthquake-triggered landslides(EQTLs)were *** landslides covered an area of 30.7km^(2),with a source area of 9.4 km^(2).These EQTLs were mainly distributed in areas with a seismic intensity of VIII and *** of the landslides were small and medium in size,and their types included landslide,rockfall,and rock *** landslide distributions were found,EQTLs were distributed along the Xianshuihe fault,landslide area decreased gradually with an increased distance to the fault;EQTLs were distributed along the Daduhe River and roads;besides,landslide distribution was associated with ground deformation caused by the ***’characteristics indicated that,a large number of EQTLs were located near the foot of the slope;the full area of EQTLs and their source area followed a power *** study concluded that Luding EQTLs were greater in number and area but relatively smaller in terms of affected *** on geo-hazards post-earthquake and risk assessment were proposed in the earthquake-stricken area to support the rehabilitation and reconstruction.

关键词： 2022 Luding earthquake Earthquaketriggered landslide Landslide inventory Distribution patterns

卸船作业模式下自动化码头AGV路径仿真优化

在线全文

学校读者我要写书评

暂无评论

水运工程 2018年第4期 122-127页

作者：仲美稣杨勇生上海海事大学物流科学与工程研究院上海201306

AGV作为自动化码头水平运输的设备,主要负责运输集装箱。受岸桥和场桥装卸能力、水平运输距离和集装箱作业量增加等因素影响,水平运输环节是制约自动化码头发展的瓶颈。结合港口码头作业实际,采用"模型+实例+仿真"的方法对自动化码头AG... 详细信息

AGV作为自动化码头水平运输的设备,主要负责运输集装箱。受岸桥和场桥装卸能力、水平运输距离和集装箱作业量增加等因素影响,水平运输环节是制约自动化码头发展的瓶颈。结合港口码头作业实际,采用"模型+实例+仿真"的方法对自动化码头AGV路径优化问题进行研究。结合道路交通流理论,提出交通虚拟环岛策略以避免多AGV在码头行驶时产生冲突和拥堵。在卸船作业流程下,采用e M-Plant仿真软件,对提出的交通控制策略从不同角度进行仿真模拟。结果表明,AGV不同路径的选择影响着码头的作业效率。试验结果进一步提高码头作业效率,为自动化码头AGV路径优化提供参考依据。

关键词：自动化码头交通虚拟环岛 AGV路径优化 eM-Plant仿真