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biomechanics of knee joint-- A review

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Frontiers of Mechanical Engineering 2015年第2期10卷 176-186页

作者： bhaskar kumar MADETI srinivasa rao CHALAMALAsETTI s. k. sundara siva rao bOLLA PRAGADA Department of Mechanical Engineering Gayatri Vidya Parishad Collegeof Engineering Visakhapatnam 530048 India Department of Mechanical Engineering AU College of EngineeringAndhra University Visakhapatnam 530003 India

The present paper is to know how the work is carried out in the field of biomechanics of knee. Various model formulations are discussed and further classified into mathematical model, two-dimensional model and three-dimensional model. knee geometry is a crucial part of human body movement, in which how various views of knee is shown in different planes and how the forces act on tibia and femur are studied. It leads to know the forces acting on the knee joint. Experimental studies of knee geometry and forces acting on knee shown by various researchers have been discussed, and comparisons of results are made. In addition, static and dynamic analysis of knee has been also discussed respectively to some extent.

关键词： biomechanics knee geometry ligaments squat femorotibial joint finite element method

Analysis of vibrational spectra of nano-bio molecules: Application to metalloporphrins

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Chinese Physics b 2013年第9期22卷 225-232页

作者： k srinivasa rao G srinivas J.Vijayasekhar V.U.M.rao Y.srinivas k.sunil babu V.sunndadara siva kumar A.Hanumaiah Department of Electronics & Instrumentation Engineering Lakireddy Bali Reddy College of Engineering Department of Physics KL University Research scholar Department of MathematicsJawaharlal Nehru Technological University Department of Applied Mathematics College of Science & TechnologyAndhra University Department of Computer science GITAM University Department of Physics Miracle Engineering College Department of Electronics & Instrumentation Rajeev Gandhi Memorial Engineering College Department of Physics Lara's Vignan Institute of Technology and Science

In this paper, we have applied the Lie algebraic model to nano-bio molecules to determine the vibrational spectra of different stretching and bending vibrational modes. The determined vibrational energy levels by the Lie algebraic model are compared with the experimental data. The results from the theoretical mode[ are consistent with the experimental data. The vibrational energy levels are clustering in the excited states.

关键词： Lie algebraic model vibrational spectra vibrational modes metalloporphyrins

可循环使用的sn-TiO_2/聚噻吩纳米杂化材料用于可见光下降解有机污染物（英文）

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催化学报 2015年第10期36卷 1668-1678页

作者： M.Ravi Chandra T.siva rao b.sreedhar 安得拉邦大学化学学院无机和分析化学系印度化学技术研究所无机和物理化学部

采用改进的溶胶-凝胶法在低温制备了sn-Ti O2/聚噻吩纳米杂化材料(sPNH),运用X射线衍射(XRD)、扫描电镜、X射线光电子能谱(XPs)、红外光谱(IR)、紫外-可见光漫反射光谱(UV-DRs)和bET比表面积分析对所制样品进行了表征.XRD结果证实聚噻吩... 详细信息

采用改进的溶胶-凝胶法在低温制备了sn-Ti O2/聚噻吩纳米杂化材料(sPNH),运用X射线衍射(XRD)、扫描电镜、X射线光电子能谱(XPs)、红外光谱(IR)、紫外-可见光漫反射光谱(UV-DRs)和bET比表面积分析对所制样品进行了表征.XRD结果证实聚噻吩(PTh)对Ti O2晶相结构没有影响.IR和UV-DRs结果表明,在掺杂的金属氧化物与PTh的纳米杂化和结合过程中,PTh表面与金属氧化物之间存在相互作用(类似核壳结构).XPs结果显示,纳米杂化材料中存在sn4+以及PTh与Ti O2各自所含的元素.催化剂表面吸附污染物结果发现,sPNH的吸附容量高于sn-Ti O2纳米粒子(sTN).在可见光下降解有机污染物硝基苯(Nb)和孔雀绿(MG)的反应中,sPNH表现出比单纯sTN更高的光催化活性和稳定性.由于sTN上存在聚噻吩,使得样品表面吸附Nb(24%)和MG(21%)的能力增加,从而导致更高的光催化收率.考察了该光催化剂在可见光下重复使用5次时的光催化活性,未见PTh的消耗和降解.这些高光催化活性的sPNH材料有望在工业水净化中用作光催化剂.

关键词：锡二氧化钛聚噻吩纳米杂化材料硝基苯孔雀绿可见光光催化可循环使用性

Estimation of boswellic acids in herbal formulations containing boswellia serrata extract and comprehensive characterization of secondary metabolites using UPLC-Q-Tof-Ms^e

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Journal of Pharmaceutical Analysis 2019年第6期9卷 414-422页

作者： kumar katragunta bandi siva Niharika kondepudi PRrao Vadaparthi Nadendla Rama rao Ashok kumar Tiwari katragadda suresh babu Centre for Natural Products and Traditional knowledge CSIR-Indian Institute of Chemical TechnologyHyderabad500007India Chalapathi Institute of Pharmaceutical sciences LamGuntur522034India College of Pharmaceutical sciences Acharya Nagarjuna UniversityNagarjuna NagarGuntur522510India

boswellia serrata is a widely used herb in Indian systems of medicine and is well known for its potential medicinal properties.A chromatographic method was developed for the analysis and quanti cation of six boswellic acid marker compounds,i.e.,keto boswellic acid(1),3-O-Acetyl 11-keto-boswellic acid(2),-b boswellic acid(3),-boswellic acid(4),3-O-Acetyl--boswellic acid(5)and 3-O-Acetyl--boswellic acid b(6)in commercial herbal products containing *** as an *** UPLCbwith Q-Tof-Ms/Ms makes the better identi cation of secondary metabolites and adulterants in the herbal formulations containing *** in rapid time using fragmentation approach than the traditional *** this study quanti cation of boswellic acids with UPLC-PDA method was performed as per the pharmacopeia ***,minor phytochemical constituenboswellia serrata is a widely used herb in Indian systems of medicine and is well known for its potential medicinal properties.A chromatographic method was developed for the analysis and quantification of six boswellic acid marker compounds,i.e.,keto boswellic acid(1),3-O-Acetyl 11-keto b-boswellic acid(2),ɑ-boswellic acid(3),b-boswellic acid(4),3-O-Acetyl-ɑ-boswellic acid(5)and 3-O-Acetyl-b-boswellic acid(6)in commercial herbal products containing *** as an *** UPLC with Q-Tof-Ms/Ms makes the better identification of secondary metabolites and adulterants in the herbal formulations containing *** in rapid time using fragmentation approach than the traditional *** this study quantification of boswellic acids with UPLC-PDA method was performed as per the pharmacopeia ***,minor phytochemical constituents were identified and characterized with the help of LC-Q-Tof-Ms/Ms fragmentation data and various isoforms of boswellic acids and tirucallic acids in *** oleo-gum-resin extract were *** were identi ed and characterized with the help of LC-Q-Tof-Ms/Ms

关键词： boswellia serrata Herbal formulations Quantification UPLC-Q-tof-Mse boswellic acids Tirucallic acids

Acaricidal activity of synthesized titanium dioxide nanoparticles using Calotropis gigantea against Rhipicephalus microplus and Haemaphysalis bispinosa

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Asian Pacific Journal of Tropical Medicine 2013年第9期6卷 682-688页

作者： sampath Marimuthu Abdul Abdul Rahuman Chidambaram Jayaseelan Arivarasan Vishnu kirthi Thirunavukkarasu santhoshkumar kanayairam Velayutham Asokan bagavan Chinnaperumal kamaraj Gandhi Elango Moorthy Iyappan Chinnadurai siva Loganathan karthik kokati Venkata bhaskara rao Unit of Nanotechnology and bioactive Natural Products Post Graduate and Research Department of ZoologyCAbdul Hakeem College Environmental biotechnology Division School of Bio Sciences and TechnologyVIT University

Objective:To assess the acaricidal activity of titanium dioxide nanoparticles(TiO_2 NPs)synthesized from flower aqueous extract of Calotropis gigantea(***)against the larvae of Rhipicephalus(boophilus)microplus[R.(b.)microplus]and the adult of Haemaphrysalis bispinosa(***).Methods:The lyophilized *** flower aqueous extract of 50 mg was added with 100 mL of TiO(OH_2)(10 mM)and magnetically stirred for 6 *** TiO_2 NPs were characterized by X-ray diffraction(XRD).Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy(sEM),and Energy dispersive X-ray spectroscopy(EDX).The synthesised TiO_2 NPs were tested against the larvae of R(b.)microplus and adult of *** were exposed to filter paper impregnated ***:XRD confirmed the crystalline nature of the nanoparticles with the mean size of 10.52 *** functional groups for synthesized TiO_2NPs were 1405.19,and 1053.45 cm^(-1)for-NH_2 bending,primary amines and amides and 1053.84and 1078.45 cm^(-1)for *** micrographs of the synthesized TiO_2 NPs showed the aggregated and spherical in *** maximum efficacy was observed in the aqueous flower extract of *** and synthesized TiO_2 NPs against R.(b.)microplus(LC_(50)=24.63 and 5.43 mg/L and r^2=0.960 and 0.988)and against ***(LC_(50)=35.22 and 9.15 mg/L and r^2=0.969 and 0.969).***:The synthesized TiO_2 NPs were highly stable and had significant acaricidal activity against the larvae of R.(b.)microplus and adult of *** study provides the first report of synthesized TiO_2 NPs and possessed excellent anti-parasitic activity.

关键词： Rhipicephalus(boophilus) microplus Haemaphysalis bispinosa Calotropis gigantean Titanium dioxide nanoparticles X-ray diffraction techniques Electron microscopic study