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Physiological responses of four herbaceous plants to aluminum stress in South China

Frontiers in Biology 2006年第3期1卷 295-302页

作者： LIU Peng YANG YS XU Gendi GUO Shuiliang zheng xiaobin WANG Min Key Laboratory of Botany Zhejiang Normal UniversityJinhua 321004China Environmental Engineering Research Centre The Queen’s University BelfastBelfast BT95AGUK

Different plants have physiological responses under Al stress,but there is no systematic study to examine physiological responses of herbaceous plants under Al *** aim of this study is to investigate the effect of Al on physiological characteristics of four herbaceous plants,which distributed in red soil area in South China,and to analyze the differences in physiological responses to Al stress between the four herbaceous *** herbaceous plants(Pharbitis nil,Cassia occidentlis,Echinochloa colonum and Aeschynomene indica)were used,and the seed germi-nation percentage,the contents of chlorophyll,proline,and malondialdehyde(MDA),membrane permeability(MP),soluble sugar,and activities of peroxides(POD)and cata-lase(CAT)in leaves under five Al^(3+)treatments(0,80,400,2000,and 10000 mg/L)were assayed with the sand culture *** results showed remarkable effects of Al^(3+)on physiological characteristics of these four herbaceous *** seeds of all the four species could not germinate at 10000 mg/L,and the growth of all plants were retarded under the 2000 mg/L Al^(3+)*** with the control,2000 mg/L Al^(3+)significantly(P<0.05)reduced the con-tents of chlorophyll a and chlorophyll a+b,and increased the contents of MDA and *** content of proline in-creased very significantly(P<0.01)and activities of POD and CAT were *** contents of MDA and MP in leaves of *** and *** decreased,and the activities of POD and CAT in leaves of the two plants increased under 80 mg/L and 400 mg/***,the changes in *** leaves were opposite to those of the above two *** changes in leaves of *** were similar to those of *** and *** at 80 mg/L,but were opposite to those at 400 mg/L Al^(3+).It is suggested that plants with higher ac-tivities of POD and CAT,more contents of chlorophyll and proline,and lower contents of MDA and MP consequently improve the tolerance to Al stress under low and middle Al treatments.

关键词： aluminium stress physiological and ecological response tolerance seed germination herbaceous plants

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Obstructor,a Frankliniella occidentalis protein,promotes transmission of tomato spotted wilt orthotospovirus

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Insect Science 2023年第3期30卷 741-757页

作者： xiaobin zheng Yanran Wan Min Tao Jiangjiang Yuan Kun Zhang Jing Wang Youjun Zhang Pei Liang Qingjun Wu Department of Plant Protection Institute of Vegetables and FlowersChinese Academy of Agricultural SciencesBejingChina Department of Entomology China Agricultural UniversityBejingChina

Tomato spotted wilt orthotospovirus(TSWV)causes substantial economic losses to vegetables and other *** is mainly transmitted by thrips in a persistent and proliferative manner,and its most efficient vector is the western flower thrips,Frankliniella occidentalis(Pergande).In moving from the thrips midgut to the salivary glands in preparation for transmission,the virions must overcome multiple *** several proteins that interact with TSWV in thrips have been characterized,we hypothesized that additional thrips proteins interact with TSWV and facilitate its *** the current study,67 F occidentalis proteins that interact with GN(a structural glycoprotein)were identified using a split-ubiquitin membrane-based yeast 2-hybrid(MbY2H)*** proteins,apolipoprotein-D(ApoD),orai-2-like(Orai),and obstructor-E-like isoform X2(Obst),were selected for further study based on their high abundance and interaction strength;their interactions with Gn were confirmed by MbY2H,yeastβ-galactosidase and luciferase complementation *** relative expressions of ApoD and Orai were significantly down-regulated but that of Obst was significantly up-regulated in viruliferous *** interfering with Obst in larval stage,the TSWV acquisition rate in 3 independent experiments was significantly decreased by 26%,40%,and 35%,*** addition,when Obst was silenced in adults,the virus titer was significantly decreased,and the TSWV transmission rate decreased from 66.7%to 31.9%using the leaf disk method and from 86.67%to 43.33%using the living plant ***,the TSWV acquisition and transmission rates were not affected by interference with the ApoD or Orai *** results indicate that Obst may play an important role in TSWV acquisition and transmission in Frankliniella occidentalis.

关键词： Frankliniella occidentalis obstructor tomato spotted wilt orthotospovirus transmission virus-vector interaction

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Preoperative hypoalbuminemia is associated with an increased risk for intra-abdominal septic complications after primary anastomosis for Crohn’s disease

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Gastroenterology Report 2017年第4期5卷 298-304,I0002,I0003页

作者： Xuanhui Liu Xianrui Wu Chi Zhou Tuo Hu Jia Ke Yufeng Chen Xiaosheng He xiaobin zheng Xiaowen He Jiancong Hu Min Zhi Xiang Gao Pinjin Hu Xiaojian Wu Ping Lan Department of Colorectal Surgery The Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdongChina Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases The Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdongChina Department of Gastroenterology The Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdongChina

Objective:The aim of this study was to evaluate the impact of preoperative hypoalbuminemia on the development of intraabdominal septic complications(IASCs)after primary anastomosis for patients with Crohn’s disease(CD).Methods:All CD patients undergoing bowel resection with a primary anastomosis during the study period from 2007 to 2015 were *** association of preoperative hypoalbuminemia(<30 g/L)with the risk for IASCs were assessed using both univariate and multivariate ***:A total of 124 eligible patients were included,117(94.4%)of whom had available preoperative albumin *** hypoalbuminemia occurred in 13(11.7%)*** duration fromdiagnosis to surgery was longer for patients with preoperative hypoalbuminemia than those without(p=0.012).Patients with preoperative hypoalbuminemia weremore likely to have a history of preoperative use of 5-aminosalicylic acid(p=0.013)and have an intraoperative finding of small bowel obstruction(p=0.015).Of all patients,24(19.4%)developed postoperative *** analysis showed that patients with preoperative hypoalbuminemia had an increased risk for IASCs(p=0.012).Multivariate analysis confirmed the association between preoperative hypoalbuminemia and IASCs(odds ratio 4.67,95%confidence interval:1.28–17.04,p=0.02).Similar findings were also obtained when preoperative albumin level was analysed as a continuous variable(p=0.019).Conclusions:Preoperative hypoalbuminemia is a significant predictor for the development of postoperative IASCs in CD patients after bowel resection with a primary *** preoperative nutrition status might lessen the risk for IASCs.

关键词： Crohn’s disease hypoalbuminemia intra-abdominal septic complications risk factor

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Modeling and Simulation for Boiler Combustion Control System of 1000MW Ultra-Supercritical Unit

Modeling and Simulation for Boiler Combustion Control System...

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第26届中国控制与决策会议

作者： HOU Guolian JIANG Pengcheng zheng xiaobin ZHANG Jianhua School of Control and Computer Engineering North China Electric Power University

ISBN: (纸本)9781479937097

Taking the 1000 MW ultra-supercritical once-through boiler as a research object, the combustion process of boiler is analyzed through principles of energy transferring, heat exchange, and mass flow balances. Since the complete and accurate model of boiler combustion is the basis of performance study and optimizing control, a mechanism mathematical model of boiler combustion control system is built up in this paper. It is the first time that boiler combustion control system has successfully covered the coal mill pulverizing system, and this model consists of the other three controlled variables subsystems: main steam pressure control system, furnace pressure control system and flue gas oxygen content control system. Furthermore, this paper gives the simulation of the mechanism mathematical model and analyzes the response curves of the outputs after giving each input a step disturbance respectively at two different load conditions. The results of the simulation show that the mathematical model is reasonable and effective.

关键词： ultra-supercritical unit combustion control system mechanism mathematical model simulation

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Study of Modeling and Intelligent Control on AGC System with Wind Power

Study of Modeling and Intelligent Control on AGC System with...

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第26届中国控制与决策会议

作者： HOU Guolian zheng xiaobin JIANG Pengcheng ZHANG Jianhua School of Control and Computer Engineering North China Electric Power University

In recent years, wind power which is an intermittent and random energy source affects the frequency stability of automatic generation control（AGC） system with the large-scale wind power integration. So, it is necessary to improve the conventional frequency control method and model. Firstly, a dynamic wind farm model is set up based on wind turbines clustering for the accuracy of data in this paper. Secondly, it is analyzed that the difference between multi-area interconnection AGC model and area control error（ACE） with wind farm and without wind farm. Thirdly, an intelligent control strategy of cascade control with outer loop using fuzzy PI algorithm and inner loop using internal model controller is designed to reduce the impacting of wind power changes on AGC system frequency and improve the performance of AGC system. Finally, frequency control effects of conventional AGC system and improved AGC system are contrasted by simulation study of four-area system. It is proved that the improved AGC system has stronger ability to resist fluctuation of wind power and better frequency control performance.

关键词： AGC wind power wind turbines clustering cascade control fuzzy PI internal model control

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Cerebrospinal fluid circulating tumor DNA contributes to the detection and characterization of leptomeningeal metastasis in non-small cell lung cancer

Cerebrospinal fluid circulating tumor DNA contributes to the...

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2022CCTB中国肿瘤标志物学术大会暨中国整合肿瘤学大会暨第十六届肿瘤标志物青年科学家论坛暨中国肿瘤标志物产业创新大会

作者： Qian Miao gen lin xinlong zheng xiaobin zheng longfeng zhang kan jiang biao wu yiquan xu Fujian Cancer Hospital

Background:Cerebrospinal fluid(CSF) reveals a unique genetic signature of Leptomeningeal metastases(LM) and has a potential role as a source of liquid biopsy in non-small cell lung cancer(NSCLC) ***,studies in patients with LMs are ***:Patients with LM from NSCLC were retrospectively *** tumor DNA(ctDNA) of CSF and paired extracranial tumor or plasma were tested by next-generation sequencing(NGS).Clinical outcomes were compared with Kaplan-Meier log-rank test and Cox proportional hazards ***:We reviewed charts of 80 patients with LM treated at Fujian Cancer Hospital.A total of57 CSF and of which 30 contemporaneously paired CSF and extracranial samples tested by NGS were *** of resistance to targeted therapy,such as concomitant T790M and T797S mutation,MET dysregulation,and the co-occurrence of tumor protein p53 gene(TP53) plus retinoblastoma 1(RB1) loss,revealed in *** interestingly,ctDNA of CSF revealed EGFR mutations in 4 patients previously diagnosed with wild-type and prolonged survival with targeted *** matched genenic profile of CSF and extracranial lesions,CSF showed superior sensitivity and abundant dysregulation of cell cycle regulator Copy Number Variations(CNVs),lower T790M mutation and higher EGFR amplification,while MYC amplification was significantly differentially *** the diagnosis of LM,the median overall survival(OS) was 14.1 months [95%confidence interval(CI):10.7–17.5 months].Univariate analyses and multivariate Cox analyses demonstrated that patients with CDKN2A/CDKN2B co-mutation had inferior median OS compared without CDKN2A/2B mutations and with unknown(7.2 versus 17.1versus 12.1 months,P=0.013).Conclusions:CSF-based ctDNA testing contributes to the phenotypic detection and unique characterization of resistance mechanisms of LM in ***2A/2B mutation maybe a poor prognostic factor in LM patients.

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网架结构在山体滑坡冲击下的垮塌模拟分析

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应用力学学报 2019年第5期36卷 1069-1075,1257-1258页

作者：王孟鸿赵要祥郑晓彬北京建筑大学土木与交通工程学院

针对某网架受到山体滑坡作用导致局部垮塌的实际案例,基于Hamilton原理,运用ANSYS/LS-DYNA动力分析软件,建立起网架结构和山体滑坡冲击荷载模型,充分考虑了冲击荷载的动力效应和接触碰撞理论,定义了结构失效的限值和失效模式。通过改变... 详细信息

针对某网架受到山体滑坡作用导致局部垮塌的实际案例,基于Hamilton原理,运用ANSYS/LS-DYNA动力分析软件,建立起网架结构和山体滑坡冲击荷载模型,充分考虑了冲击荷载的动力效应和接触碰撞理论,定义了结构失效的限值和失效模式。通过改变山体滑坡冲击荷载的质量与速度,分析了结构失效部位的能量变化、速度和位移演变、等效应力和塑性应变的开展。结果表明:在冲击荷载下网架杆件所能承受的瞬时应力可以远大于在静力荷载下杆件的屈服应力,网架在被冲击区域绝大部分杆件进入塑性,非冲击区进入塑性的杆件多发生于横向的上弦杆和下弦杆;通过对塑性杆件的加固处理,有效增强了结构的抗倒塌能力。

关键词：网架结构冲击荷载山体滑坡动力响应

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数据采集算法的研究

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港口装卸 2011年第6期 31-34页

作者：郑笑彬大连港埠机电有限公司

介绍利用C#编程制作数据采集软件的方法,讨论该软件在工程中的应用情况。数据采集软件利用以太网协议读取PLC中的数据,并将现场设备信息存储到数据库中,以实现对PLC采集数据的自动计算,节省人力,缩短项目开发周期。

关键词： PLC 数据通信算法

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The quality model of mechanic processing error based on RBF network

The quality model of mechanic processing error based on RBF ...

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全国第十届企业信息化与工业工程学术年会

作者： He Tao,Gong Lixiong,Zhong Fei,zheng xiaobin, Tan Zhongjun (School of Mechanical Engineering, HBUT, Wuhan 430068,China)

It is complicated and impossible to construct relational model of the processing error the craft parameter, the systematic rigidity and the process variable using conventional, mathematics methods. Th

关键词： RBF Neural Network MATLAB Processing error

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肩袖损伤行MRI检查不同扫描方位的效果

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中国实用医刊 2017年第24期44卷 71-73页

作者：郑晓宾长治医学院附属和济医院影像科山西长治046000

目的探讨核磁共振检查不同扫描方位对肩袖损伤的检出效果.方法回顾性分析医院收治的117例肩袖损伤患者的MRI资料,比较不同磁共振扫描方位对肩袖损伤的检出率.结果 ①117例患者中冈上肌腱损伤79例,冈下肌腱损伤43例,肩胛下肌腱损伤26例... 详细信息

目的探讨核磁共振检查不同扫描方位对肩袖损伤的检出效果.方法回顾性分析医院收治的117例肩袖损伤患者的MRI资料,比较不同磁共振扫描方位对肩袖损伤的检出率.结果 ①117例患者中冈上肌腱损伤79例,冈下肌腱损伤43例,肩胛下肌腱损伤26例,小圆肌腱损伤20例;肩峰下滑囊积液14例,喙突下滑囊积液11例,盂唇损伤9例;②冈上肌腱损伤中,双斜冠状位检出率最高为97.47％（77/79）,与斜冠状位、斜矢状位、横轴位比较差异有统计学意义（P〈0.05）;冈下肌腱损伤中,横轴位检出率最高为97.67％（42/43）,与其他三个方位比较差异有统计学意义（P〈0.05）;不同方位扫描肩胛下肌腱与小圆肌腱损伤检出率差异未见统计学意义（P〉0.05）.结论 MRI检查是诊断肩袖损伤的重要检查手段,可清晰显示肩关节周围肌腱和软组织结构,诊断冈上肌腱损伤首先双斜冠状位扫描,冈下肌腱损伤首选横轴位扫描.

关键词：肩袖损伤 MRI检查扫描方位检出率

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