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印度楝树：用于制革原料皮防腐的绿色材料

北京皮革（中外鞋讯）（下） 2010年第3期 84-89页

作者： Vasudevan Preethi（） Veerappan Rathinasamy（） narasimhan kannan（） Chandra Babu（） Praveen Kumar Sehgal（）辜海彬（译）中央皮革研究生物制品实验室 AdyarChennai 600020Tamil Nadu印度中央皮革制革厂部 AdyarChennai 600020Tamil Nadu印度不详

固体食盐（氯化钠）广泛用于原料皮的防腐，因此，大量的氯化钠以总溶解固体（TDS）的形式排放在制革浸水工序的废水中。在印度Chennai中央皮革研究所（CLRI），我们尝试使用一种基于草本植物印度楝树（一般的印度名称为Neem）的防腐剂... 详细信息

固体食盐（氯化钠）广泛用于原料皮的防腐，因此，大量的氯化钠以总溶解固体（TDS）的形式排放在制革浸水工序的废水中。在印度Chennai中央皮革研究所（CLRI），我们尝试使用一种基于草本植物印度楝树（一般的印度名称为Neem）的防腐剂配方来取代食盐，用于山羊皮的防腐。在CLRI的试验成功后，我们又在有当地居民收集大量山羊皮来出售的印度农村地区，对该防腐剂配方成功进行了实地试验。用该配方防腐的皮和盐腌皮，其蓝湿革和坯革的物理化学性能和感官性能都差不多。使用印度楝树进行防腐，可显著减少浸水废液中的TDS，而且在用于防腐后，还可将它从皮上刮下来，堆肥处理，制成肥料，作为花肥使用，从而为其处理提供了很好的解决办法。

关键词：印度楝树防腐剂原料皮绿色材料制革总溶解固体物理化学性能试验成功

Hermitian-Einstein Metrics on Parabolic Stable Bundles

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Acta Mathematica Sinica,English Series 1999年第1期15卷 93-114页

作者： M.S.narasimhan Mathematics Section International Centre for Theoretic PhysicsP.O.Box 58634100 TriesteItaly

Let $$\overline M $$ be a compact complex manifold of complex dimension two with a smooth Kähler metric and D a smooth divisor ... 详细信息

Let $$\overline M $$ be a compact complex manifold of complex dimension two with a smooth Kähler metric and D a smooth divisor on $$\overline M $$ . If E is a rank 2 holomorphic vector bundle on $$\overline M $$ with a stable parabolic structure along D, we prove the existence of a metric on $$E'{\text{ = }}E|_{\overline M \backslash D} $$ (compatible with the parabolic structure) which is Hermitian-Einstein with respect to the restriction of the Kähler metric to $$\overline M $$ ĚD. A converse is also proved.

关键词： Hermitian-Einstein Metrics on Parabolic Stable Bundles Math

Graph-based structural joint pose estimation in non-line-of-sight conditions

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Earthquake Engineering and Engineering Vibration 2023年第2期22卷 371-386页

作者： Alexander Thoms Zaid Al-Sabbag Sriram narasimhan Department of Mechanical and Aerospace Engineering University of California-Los AngelesUSA Department of Civil and Environmental Engineering University of WaterlooCanada Department of Civil and Environmental Engineering University of California-Los AngelesUSA

In post-earthquake surveys,it is difficult(and often infeasible)to observe and quantify displacements beyond line-of-sight(LOS),given seismic force-resisting and gravity systems exist completely or partially within a building′s *** overcome this limitation,we develop a novel framework that generalizes graph-based state estimation towards structural joint localization via engineered *** landmarks provide an indirect means to estimate residual displacements where direct LOS is *** our framework,engineered landmarks define topologies of uniquely identifiable landmarks that are either visible or non-visible to a robot performing simultaneous localization and mapping(SLAM).Within the SLAM approach,factors encoding robot odometry and robot-to-visible landmark measurements are formulated for the cases of wireless sensing and fiducial object detection and *** landmarks are rigidly attached to non-visible landmark subsets for each engineered landmark,where the complete set of non-visible landmarks form globally rigid and localizable connectivity graphs via range-based *** subsets of non-visible landmarks are embedded within the base structure and uniquely define joint pose via geometric *** factors are unified within a common graph to solve for the maximum a posteriori estimate of robot,landmark,and joint states via nonlinear least squares *** demonstrate the applicability of our approach,we apply the Monte Carlo method over a parameterization of system noise to calculate residual joint pose error distributions,maximum average inter-story drift ratios,and related summary statistics for a 19-story nonlinear structural *** performing nonlinear time history analyses over sets of service-level and maximum considered earthquakes,our parametric study gives insight into our method′s application towards post-earthquake building evaluation in non-LOS conditions.

关键词： state estimation engineered landmarks post-earthquake residual displacement

'nAb'the self-reactive activity in the COVID-19 combat

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Signal Transduction and Targeted Therapy 2021年第4期6卷 1077-1078页

作者： Madhusudhanan narasimhan Lenin Mahimainathan Alagarraju Muthukumar Department of Pathology University of Texas Southwestern Medical CenterDallasTXUSA

The recent article in Cell by Kreye et al.1 discovered that non-self-reactive-neutralizing antibody(ns-nAb)could be an effective way to combat SARS-CoV-2 *** observations provide new perspectives for therapeutic antib... 详细信息

关键词： al. reactive neutral

Improved Rat Swarm Based Multihop Routing Protocol for Wireless Sensor Networks

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Intelligent Automation & Soft Computing 2023年第3期35卷 2925-2939页

作者： H.Manikandan D.narasimhan Department of CSE Srinivasa Ramanujan CentreSASTRA Deemed UniversityThanjavurTamil Nadu 613401India Department of Mathematics Srinivasa Ramanujan CentreSASTRA Deemed UniversityThanjavurTamil Nadu 613401India

Wireless sensor networks(WSNs)encompass a massive set of sensor nodes,which are self-conﬁgurable,inexpensive,and *** sensor nodes undergo random deployment in the target area and transmit data to base station using inbuilt *** reducing energy consumption and lengthen lifetime of WSN,multihop routing protocols can be *** study develops an improved rat swarm optimization based energy aware multi-hop routing(IRSO-EAMHR)protocol for *** important intention of the IRSO-EAMHR method is for determining optimal routes to base station(BS)in the clustered ***,a weighted clustering process is performed to group the nodes into clusters and select cluster heads(CHs).Next,the IRSO-EAMHR approach derives aﬁtness function containing three input parameters(residual energy,dis-tance,and node degree)for routing *** IRSO technique was designed by the integration of Levy movement concepts into the traditional RSO *** experimental result analysis of the IRSO-EAMHR technique is carried out and the outcomes are examined in various *** simulation outcomes demonstrate the promising performance of the IRSO-EAMHR technique over the recent state of art approaches.

关键词： Wireless sensor networks multihop routing clustering metaheuristics lifetime rat swarm optimizer

Evolving concept of dyssynchrony and its utility

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Journal of Geriatric Cardiology 2022年第1期19卷 44-51页

作者： Priyanka Satish Bharat narasimhan Andreas Hagendorff Bhupendar Tayal Houston Methodist DeBakey Heart and Vascular Center HoustonTXUSA Leipzig University Hospital Department of CardiologyLeipzigGermany

The role of electromechanical dyssynchrony in heart failure gained prominence in literature with the results of trials of cardiac resynchronization therapy(CRT).CRT has shown to significantly decrease heart failure hospitalization and mortality in heart failure patients with *** guidelines recommend the use of electrical dyssynchrony based on a QRS>150 ms and a left bundle branch block pattern on surface electrocardiogram to identify dyssynchrony in patients who will benefit from CRT ***,predicting response to CRT remains a challenge with nearly one-third of patients gaining no benefit from the *** echocardiographic measures of mechanical dyssynchrony have been studied over the past two ***,trials where mechanical dyssynchrony used as an additional or lone criteria for CRT failed to show any benefit in the response to *** shows that a deeper understanding of cardiac mechanics should be applied in the assessment of *** review discusses the evolving role of imaging techniques in assessing cardiac dyssynchrony and their application in patients considered for device therapy.

关键词： cardiac mortality gained

Soft sensor design for hydrodesulfurization process using support vector regression based on WT and PCA

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Journal of Central South University 2015年第2期22卷 511-521页

作者： Saeid Shokri Mohammad Taghi Sadeghi Mahdi Ahmadi Marvast Shankar narasimhan Department of Chemical Engineering Iran University of Science and Technology (IUST) Tehran 16765?163 Iran Process & Equipment Technology Development Division Research Institute of Petroleum Industry (RIPI) Tehran 14665?137 Iran Department of Chemical Engineering IIT Madras Chennai 600036 India

A novel method for developing a reliable data driven soft sensor to improve the prediction accuracy of sulfur content in hydrodesulfurization(HDS) process was proposed. Therefore, an integrated approach using support vector regression(SVR) based on wavelet transform(WT) and principal component analysis(PCA) was used. Experimental data from the HDS setup were employed to validate the proposed model. The results reveal that the integrated WT-PCA with SVR model was able to increase the prediction accuracy of SVR model. Implementation of the proposed model delivers the best satisfactory predicting performance(EAARE=0.058 and R2=0.97) in comparison with SVR. The obtained results indicate that the proposed model is more reliable and more precise than the multiple linear regression(MLR), SVR and PCA-SVR.

关键词： soft sensor support vector regression principal component analysis wavelet transform hydrodesulfurization process

A Note on Hermitian-Einstein Metrics on Parabolic Stable Bundles

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Acta Mathematica Sinica,English Series 2001年第1期17卷 77-80页

作者： Jia Yu LI M. S. narasimhan Institute of Mathematics Academy of Mathematics and System Sciences Academia Sinica Institute of Mathematics Fudan University Mathematics Section International Centre for Theoretic Physics

Let M be a compact complex manifold of complex dimension two with a smooth K hler metric and D a smooth divisor on . If E is a rank 2 holomorphic vector bundle on M with a stable parabolic structure along D, we prove that there exists a Hermitian-Einstein metric on E’=E| \D compatible with the parabolic structure, whose curvature is square integrable.

关键词： Hermitian-Einstein metric Parabolic stable bundle Kahler manifold

Non-FCC rich Au crystallites exhibiting unusual catalytic activity

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Nano Research 2017年第7期10卷 2271-2279页

作者： Gangaiah Mettela Nisha Mammen Joydip Joardar Shobhana narasimhan Giridhar U. Kulkarni Thematic Unit of Excellence on Nanochemistry and Chemistry and Physics of Materials Unit Jawaharlal Nehru Centre for Advanced Scientific Research Jakkur Bangalore 560 064 India Theoretical Sciences Unit Jawaharlal Nehru Centre forAdvanced Scientific Research Jakkur Bangalore 560 064 India IntemationalAdvanced Research Centre for Powder Metallurgy & New Materials Balapur Hyderabad 500 005 India Centre for Nano and Soft Matter Sciences Jalahalli Bangalore 560 013 India

Bipyramidal Au microcrystallites have been synthesized by thermalizing a Au-organic complex in the presence of Ag（I） ions, the latter acting as a shape- directing agent. With a highly corrugated morphology leading to strain-induced non-face-centered cubic （non-FCC） Au phases, the non-FCC portion can be tuned by varying the Ag/Au ratio, as verified by diffraction measurements. For a Ag/Au ratio of 0.34, the non-FCC Au portion was as high as 85%. X-ray microdiffraction and electron diffraction measurements reveal that the non-FCC contribution comes primarily from bipyramids, while other microcrystallites, namely, tetrahexahedrons and hexagrams, host non-FCC phases only at the edges and, to an even lesser extent, at the comers. When used as a catalyst for p-nitrophenol reduction, the non-FCC microcrystallites exhibit a significantly enhanced activity compared to FCC Au, which shows only negligible activity. These results are in accordance with trends in the values of two descriptors of reactivity calculated from first principles： The effective coordination number is found to decrease and the d-band center is found to increase in energy going from the FCC to the non-FCC phases of Au. Our findings contradict the general notion that Au is catalytically active only in nanodimensions and is otherwise inert; in this system, its activity arises from the non-FCC phases.

关键词： Au microcrystallites non-face-centered cubic(non-FCC) phases microbeam X-raydiffraction (XRD) catalysis effective coordinationnumber