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A NOVEL APPROACH FOR SIMuLTANEOuS REDuCTION OF Fe^Ⅱ （EDTA） NO AND Fe^Ⅲ （EDTA） uSING MICROORGANISMS

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化工学报 2003年第9期54卷 1340-1342页

作者：李伟施耀荆国华马碧瑶 CHANG Shih-ger Institute of Environmental Engineering Zhejiang University Environmental Energy Technology Division Lawrence Berkeley National Laboratory University of California

The emission of nitrogen oxides (NO_x) is one of the major causes of acid rain. The use of metal chelate additives in wet flue gas desulfurization (FGD) systems for combined removal of NO_x and SO_2 has attracted a great deal of attention. Fe~(II) (EDTA), (EDTA, thylenediaminetetraacetate) is one of the most promising additives to promote the solubility of NO by formation of Fe~(II) (EDTA) NO.

关键词：微生物法大气污染酸雨氮氧化物铁离子还原

Correction of failure in antenna array using matrix pencil technique

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Chinese Physics B 2017年第6期26卷 491-498页

作者： S u Khan M K A Rahim Advanced RF & Microwave Research Group Department of Communication Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

In this paper a non-iterative technique is developed for the correction of faulty antenna array based on matrix pencil technique（MPT）. The failure of a sensor in antenna array can damage the radiation power pattern in terms of sidelobes level and nulls. In the developed technique, the radiation pattern of the array is sampled to form discrete power pattern information set. Then this information set can be arranged in the form of Hankel matrix（HM） and execute the singular value decomposition（SVD）. By removing nonprincipal values, we obtain an optimum lower rank estimation of HM. This lower rank matrix corresponds to the corrected pattern. Then the proposed technique is employed to recover the weight excitation and position allocations from the estimated matrix. Numerical simulations confirm the efficiency of the proposed technique, which is compared with the available techniques in terms of sidelobes level and nulls.

关键词： array correction low rank estimation matrix pencil technique singular value decomposition

Growth of Ni Films Observed by Scanning Tunneling Microscopy and X-ray

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Chinese Physics Letters 1999年第5期16卷 370-372页

作者： WANG De-liang u.Geyer National Laboratory for Superconductivity Institute of PhysicsChinese Academy of SciencesBeijing 100080 I.Physikalisches Institut der universitaet Goettingen Bunsenstrasse 9D-37073 GoettingenGermany

Scanning tunneling microscopy was used to measure the mean lateral dimensions D of grains at the surface of Ni films with thicknesses ranging from 15 to *** same films were analyzed by x-ray diffraction to obtain the average linear dimensionsδof coherent scattering regions in the direction normal to the film plane(coherence depths).For thin Ni films condensed on single sapphire substrate at room temperature,these two lengths D andδare equal and increase with film *** for films thicker than 130nm,these two lengths have different constant values and D>δ.This is because the coherent scattering depth is not only limited by the grain sizes but also by various defects in the *** difference between the constant values of D andδdisappears for films after annealing for 30min at 423K in the ultra-high vacuum system.

关键词： dimensions coherent film

Pulmonary Toxicity of a Formulated Preparation of Fenvalerate in Rats Subchronically Exposed by Nose Only Inhalation for 90 Days

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Biomedical and Environmental Sciences 2001年第4期14卷 333-340页

作者： u.MANI FAKRuLISLAM 等 InhalationToxicologyLaboratory IndustrialToxicologyResearchCentreM.G.MargP.Box.No.80M.G.MargLucknow－226001India DepartmentofMedicalElementolgoy＆Toxicology HamdardUniversityNewDelhi

Objective The pulmonary toxicity of a commercially available formulated preparation of Fenvalerate (Fen), a synthetic pyrethroid has been studied in rats following subchronic nose only inhalation exposure route. Method Adult male rats were exposed to Fen for 4h/day, 5 days a week for 90 days by using Flow Past Dynamic Nose only Inhalation Chamber. Results Fen exposed rats showed a significant increase in enzymatic activities of lactate dehydrogenase (LDH), acid phosphatase (ACP), alkaline phosphatase (ALP) and γ-glutamyl transferase (γ-GT) which are considered as biochemical indicators of pulmonary damage. The concomitant histopathological examination of Fen exposed rats' lung revealed inflammatory changes viz., influx of mononuclear cells admixed with a few giant cells in alveolar lumen, hypetrophied bronchiolar and alveolar epithelial lining cells and presence of edematous fluid in alveolar lumen alongwith congested parenchymatous blood vessels. Conclusion These results for the first time indicate the pulmonary toxic effects of a commonly used formulated Fen preparation by using rat model and nose only inhalation as the route of exposure.

关键词： Animals Behavior, Animal Body Weight Inhalation Exposure Insecticides Lung Male Nitriles Nose Organ Size Pyrethrins Rats Rats, Wistar

Buckling analysis of planar linear uniform deployable structures consisting of scissor-like element in space under compression

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Science China(Technological Sciences) 2021年第3期64卷 493-507页

作者： LI Bo WANG SanMin TAN u-Xuan School of Mechanical and Precision Instrument Engineering Xi’an University of TechnologyXi’an 710048China Department of Engineering Product Development Singapore University of Technology and DesignSingapore 487372Singapore School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China

This paper comprehensively investigates the buckling load and the stability of a planar linear array deployable structure composed of scissor-like element(SLE)under *** present,the researches on deployable structure are mainly focused on configuration design and dynamics characteristics of the mechanisms,but less on structural *** fact,when the external load exceeds the structural critical load value,the deployable structure will be permanently deformed or even collapse directly and no longer have any bearing *** address this issue,a new stability model is derived using linear elastic analysis method and substructure method to evaluate the buckling characteristics of the deployable structure with n SLEs when it is carried out in space,which can accurately obtain the structural instability load and can be used quantitatively to optimize the structure for making it have the most stable *** addition,the effects of the number of elements,the length,material properties and flexibility of the bar,and the deployment degree on the buckling of the scissor deployable structure are investigated,and the results of the theoretical analysis are compared with simulation and analytical results,respectively,confirming that the proposed stability model not only is able to effectively predict the structural instability load but also determine which part of the deployable structure is *** can be concluded that the stability of the deployable structure gradually decreases with the increase of the number of elements or the bar *** the calculation process,the critical load of each sub-element should be considered,and the minimum value of the critical loads of all subunits can be regarded as the instability load of the whole structure.

关键词： deployable structure stability analysis buckling load sub structure linear array simulation

Estimation of Rheological Properties of RAP Binder

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Journal of Wuhan university of Technology(Materials Science) 2010年第5期25卷 866-870页

作者：马涛 HuSSAIN u Bahia School of Transportation Southeast University Nanjing 210096 China Department of Civil and Environmental Engineering University of Wisconsin-Madison 2205 Engineering Hall Madison WI 53706 USA

The low-temperature rheological properties of binders in the recycled asphalt pavement （RAP） material without the damaging effects of solvent extractions were analyzed. The developed procedure is based on testing of bitumen-RAP mortars produced by mixing the fresh （virgin） binder with RAP material smaller than # 8 sieve. Different mortars were prepared, containing RAP material passing the #8 sieve and 15% by weight of fresh binder. Low temperature properties of these mortars were investigated by using the bending beam rheometer （BBR） test procedure that is specially modified for testing of the RAP mortars. The modification involved the development of a new kind of mold and different testing parameters. The RAP material used in the experimental study were both extracted from real reclaimed pavement and prepared in the laboratory, by aging binder through repeated PAV cycles. The results indicate the new procedure can capture the effect of aged properties of bitumen in the RAP and can be used to estimate the PG low temperature grade of the blended binder. Although data is limited in size, the modification of the BBR appears to be simple and provide repeatable data.

关键词： RAP binder rheological properties aging bending beam rheometer

Generalized Weighted Morrey Estimates for Marcinkiewicz Integrals with Rough Kernel Associated with Schrodinger Operator and Their Commutators

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Chinese Annals of Mathematics,Series B 2020年第1期41卷 77-98页

作者： Ferit GuRBuZ Faculty of Education Department of Mathematics EducationHakkari UniversityHakkari 30000Turkey

Let L =-△+V(x) be a Schrodinger operator, where △ is the Laplacian on R^n,while nonnegative potential V(x) belonging to the reverse Holder class. The aim of this paper is to give generalized weighted Morrey estimates for the boundedness of Marcinkiewicz integrals with rough kernel associated with Schrodinger operator and their ***, the boundedness of the commutator operators formed by BMO functions and Marcinkiewicz integrals with rough kernel associated with Schrodinger operators is discussed on the generalized weighted Morrey spaces. As its special cases, the corresponding results of Marcinkiewicz integrals with rough kernel associated with Schrodinger operator and their commutators have been deduced, respectively. Also, Marcinkiewicz integral operators, rough Hardy-Littlewood(H-L for short) maximal operators, Bochner-Riesz means and parametric Marcinkiewicz integral operators which satisfy the conditions of our main results can be considered as some examples.

关键词： Marcinkiewicz operator Rough kernel Schrodinger operator generalized weighted Morrey space Commutator BMO

Sandy grassland blowouts in Hulunbuir, northeast China: geomorphology, distribution, and causes

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Progress in Natural Science:Materials International 2007年第1期17卷 68-73页

作者： ZHANG Altan MunkhDalai u Hurlee Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085China　Bureau of Land and Resources of Hulunbuir CityHulunbuir 021008China Primary Education College of Hulunbuir university Hulunbuir 021000 China

A sandy grassland blowout consists of an aeolian depression formed in top soil and the underlying sand deposit underlie, and the adjoining redeposit of sand derived from the depression. Research based on field survey and topographic mapping combined with aerophotograph interpretation reveals that: (1) All the three sand land tracts in Hulunbuir Grasslands are composed of blowout depressions and adjoining dunes, with interlaying remnants of sandy grasslands as background; (2) blowout depressions and their adjoining dunes can be classified according to their morphometric characteristics, development stages, and initiating factors; (3) blowouts develop mostly in the upper parts of sidelong aweather and sunward slopes inclining southwestward when west wind prevails; (4) initiation of blowouts is closely related with the coupling of extreme droughts and wide spread intense human disturbance to the fragile topsoil layer. The investigations indicate that key factors to prevent desertification are to protect grassland vegetation and topsoil.

关键词： Hulunbuir sandy grassland blowouts desertification.

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一种自动驾驶电动汽车线束布局优化方法

同济大学学报（自然科学版） 2022年第S1期50卷 186-191页

作者： Jonas MAIER Benjamin KRüger Hans-Christian REuSS 斯图加特大学汽车工程学院(IFS) 德国斯图加特70569

近年来,随着汽车自动驾驶、数字化、电动化技术的不断发展,汽车的功能不断增加,车辆内部线束也随之增加。由于过多的线束导致车辆自重增加的问题日益突出。为了实现能源的高效利用和出行方式的可持续性,开发人员需要通过优化线束布置来... 详细信息

近年来,随着汽车自动驾驶、数字化、电动化技术的不断发展,汽车的功能不断增加,车辆内部线束也随之增加。由于过多的线束导致车辆自重增加的问题日益突出。为了实现能源的高效利用和出行方式的可持续性,开发人员需要通过优化线束布置来尽可能多的减轻车辆自重,同时降低成本。由于与线束相连的车辆零件位置固定,因此需要一个算法在车辆零件位置为限制条件下,优化车辆线束布局。之前的研究方法通常只考虑线束设计的部分限制因素,且没有考虑线束三维结构。在本文研究中,开发了一种新型的优化线束布局的方法,该方法考虑了与包装,温度负载以及装配难易相关的各种限制因素。该方法可以根据设计需求来控制线束布置方法,如在沿着车辆纵轴方向布置更多线束,以避免在车辆外围布置线束。通过该方法,可以高效地计算出线束长度、直径,以及精确的布线路径。

关键词：电动汽车汽车线束布线优化 Dijkstra算法