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Smart Healthcare Activity Recognition Using Statistical Regression and Intelligent Learning
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作者 K.Akilandeswari Nithya Rekha Sivakumar +2 位作者 Hend Khalid Alkahtani Shakila Basheer Sara Abdelwahab Ghorashi 《Computers, Materials & Continua》 SCIE EI 2024年第1期1189-1205,共17页
In this present time,Human Activity Recognition(HAR)has been of considerable aid in the case of health monitoring and recovery.The exploitation of machine learning with an intelligent agent in the area of health infor... In this present time,Human Activity Recognition(HAR)has been of considerable aid in the case of health monitoring and recovery.The exploitation of machine learning with an intelligent agent in the area of health informatics gathered using HAR augments the decision-making quality and significance.Although many research works conducted on Smart Healthcare Monitoring,there remain a certain number of pitfalls such as time,overhead,and falsification involved during analysis.Therefore,this paper proposes a Statistical Partial Regression and Support Vector Intelligent Agent Learning(SPR-SVIAL)for Smart Healthcare Monitoring.At first,the Statistical Partial Regression Feature Extraction model is used for data preprocessing along with the dimensionality-reduced features extraction process.Here,the input dataset the continuous beat-to-beat heart data,triaxial accelerometer data,and psychological characteristics were acquired from IoT wearable devices.To attain highly accurate Smart Healthcare Monitoring with less time,Partial Least Square helps extract the dimensionality-reduced features.After that,with these resulting features,SVIAL is proposed for Smart Healthcare Monitoring with the help of Machine Learning and Intelligent Agents to minimize both analysis falsification and overhead.Experimental evaluation is carried out for factors such as time,overhead,and false positive rate accuracy concerning several instances.The quantitatively analyzed results indicate the better performance of our proposed SPR-SVIAL method when compared with two state-of-the-art methods. 展开更多
关键词 Internet of Things smart health care monitoring human activity recognition intelligent agent learning statistical partial regression support vector
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New Results on One Modulo N-Difference Mean Graphs
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作者 Pon Jeyanthi Meganathan Selvi Damodaran Ramya 《Open Journal of Discrete Mathematics》 2023年第4期100-112,共13页
A graph G is said to be one modulo N-difference mean graph if there is an injective function f from the vertex set of G to the set , where N is the natural number and q is the number of edges of G and f induces a bije... A graph G is said to be one modulo N-difference mean graph if there is an injective function f from the vertex set of G to the set , where N is the natural number and q is the number of edges of G and f induces a bijection  from the edge set of G to given by and the function f is called a one modulo N-difference mean labeling of G. In this paper, we show that the graphs such as arbitrary union of paths, , ladder, slanting ladder, diamond snake, quadrilateral snake, alternately quadrilateral snake, , , , , friendship graph and admit one modulo N-difference mean labeling. 展开更多
关键词 Skolem Difference Mean Labeling One Modulo N-Graceful Labeling One Modulo N-Difference Mean Labeling and One Modulo N-Difference Mean Graph
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Antifeedant and insecticidal activities of selected plant extracts against Epilachna beetle, Henosepilachna vigintioctopunctata (Coleoptera: Coccinellidae) 被引量:2
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作者 Alagarmalai Jeyasankar Selvaraj Premalatha Kuppusamy Elumalai 《Advances in Entomology》 2014年第1期14-19,共6页
Six different indigenous plants were screened for antifeedant and insecticidal activity against fourth instar larvae of Epilachna beetle, Henosepilachna vigintioctopunctata, which is a severe pest on brinjal. Among th... Six different indigenous plants were screened for antifeedant and insecticidal activity against fourth instar larvae of Epilachna beetle, Henosepilachna vigintioctopunctata, which is a severe pest on brinjal. Among the plants screened, Achyranthes aspera showed higher activity against the selected pest. Ethyl acetate extracts of A. aspera showed higher antifeedant index and insecticidal activity against fourth instar larvae of H. vigintioctopunctata. Preliminary phytochemical analysis revealed that the presence of alkaloid and quinines in the ethyl acetate extracts indicate higher percentage of activities. Hence, it may suggest its use for controlling the vegetables insect pest, H. vigintioctopunctata. 展开更多
关键词 Henosepilachna vigintioctopunctata (Coleoptera: Coccinellidae) vigintioctopunctata Plant EXTRACTS Achyranthes aspera
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Growth and Characterization of Bisthiourea Nickel Bromide—New Semiorganic Nonlinear Optical Crystal 被引量:1
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作者 R. S. Sundararajan M. Senthilkumar C. Ramachandraraja 《Journal of Crystallization Process and Technology》 2013年第2期56-59,共4页
A new semiorganic nonlinear optical crystal of bisthiourea nickel bromide (BTNB) was grown successfully by slow evaporation technique using water as solvent. The lattice parameters of the grown crystal have been deter... A new semiorganic nonlinear optical crystal of bisthiourea nickel bromide (BTNB) was grown successfully by slow evaporation technique using water as solvent. The lattice parameters of the grown crystal have been determined by X-ray diffraction studies. Vibrational spectrum is recorded to determine symmetries of molecular vibrations. Optical absorbance spectrum recorded revealed that this crystal has good transparency in the visible region. The second harmonic generation test of BTNB confirmed the nonlinear nature of the crystal. The BTNB crystal was analyzed by a differential thermal analysis and thermogravimetric analysis (DTA-TGA) to obtain its thermal stability. Vickers microhardness test done on the crystal shows that the crystal has greater physical strength. 展开更多
关键词 BTNB—Bisthiourea NICKEL BROMIDE SHG—Second HARMONIC Generation TGA/DTA NLO—Nonlinear Optical
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Bipolar Valued Fuzzy α-Ideal of BF-Algebra 被引量:1
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作者 Shanmugavelu Sabarinathan David C. Kumar Prakasam Muralikrishna 《Circuits and Systems》 2016年第10期3054-3062,共10页
In the mathematical applications, ideal concepts are involved. They have been studied and analyzed in various ways. Already ideal and α-ideal concepts were discussed in BF-algebras. In this paper the idea of bipolar ... In the mathematical applications, ideal concepts are involved. They have been studied and analyzed in various ways. Already ideal and α-ideal concepts were discussed in BF-algebras. In this paper the idea of bipolar valued fuzzy α-ideal of BF algebra is proposed. The relationship between bipolar valued fuzzy ideal and bipolar valued fuzzy α-ideal is studied. Some interesting results are also discussed. 展开更多
关键词 BF-Algebra IDEAL Bipolar Valued Fuzzy Ideal Bipolar Valued Fuzzy α-Ideal
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Organometallic L-Alanine Cadmium Iodide Crystals for Optical Device Fabrication
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作者 Kathiravan Vaiyapuri Thangavel Subramani +4 位作者 Ashok Kumar Rajamani Muthu Lakshmi Thangavel Satheesh Kumar Ganesan Selvarajan Palanisamy Kumaresavanji Malaivelusamy 《Journal of Electronic Science and Technology》 CAS CSCD 2022年第4期345-355,共11页
Single crystals of L-alanine cadmium iodide(LACI)were grown by the slow evaporation technique at room temperature.A single-crystal X-ray diffraction(SXRD)model was used to evaluate the crystal structure of the as-grow... Single crystals of L-alanine cadmium iodide(LACI)were grown by the slow evaporation technique at room temperature.A single-crystal X-ray diffraction(SXRD)model was used to evaluate the crystal structure of the as-grown LACI crystal.The energy dispersive X-ray(EDX)analysis and ultraviolet-visible-near infrared(UV-vis-NIR)transmittance studies were carried out,and the results reveal the presence of elements in the title compound.From the transmittance data,the optical bandgap as a function of photon energy was estimated,and the different optical constants were calculated.A fluorescence study was performed for the LACI crystal.Thermogravimetric and differential thermal analyses have also been studied to investigate the thermal property of the LACI crystal.The efficiency of the second harmonic generation(SHG)of the title crystal was investigated.The magnetic and electrical properties were estimated by the vibrating sample magnetometer(VSM)analysis and impedance study,respectively. 展开更多
关键词 Fluorescence IMPEDANCE thermal analysis vibrating sample magnetometer(VSM) X-ray diffraction
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TENSOR SUM AND DYNAMICAL SYSTEMS
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作者 D.SENTHILKUMAR P.CHANDRA KALA 《Acta Mathematica Scientia》 SCIE CSCD 2014年第6期1935-1946,共12页
In this paper we introduce the concept of tensor sum semigroups. Also we have given the examples of tensor sum operators which induce dynamical system on weighted locally convex function spaces.
关键词 tensor sum composition operators multiplication operator dynamical systems seminorm operator valued mapping
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The Effect of Phosphate Mixing on Structural, Spectroscopic, Mechanical and Optical Properties of Zinc tris Thiourea Sulphate (ZTS) Single Crystals
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作者 A. Puhal Raj C. Ramachandra Raja 《Journal of Minerals and Materials Characterization and Engineering》 2012年第5期471-478,共8页
Zinc tris Thiourea Sulphate (ZTS) is a semi organic non-linear optical crystal. The ZTS and phosphate mixed (in different mol %) ZTS crystals have been grown from aqueous solution using the slow evaporation method. Si... Zinc tris Thiourea Sulphate (ZTS) is a semi organic non-linear optical crystal. The ZTS and phosphate mixed (in different mol %) ZTS crystals have been grown from aqueous solution using the slow evaporation method. Single crystal XRD were carried out for ZTS and phosphate mixed ZTS crystals to determine cell parameters. FTIR analysis identified modes of vibrations of different molecular groups and confirms the presence of phosphate ion. The UV-Vis-NIR spectrum shows that the material has wide optical transparency in the entire visible region. The second harmonic generation (SHG) was confirmed by Kurtz powder method. It is found that 10 mol % of phosphate mixed ZTS crystal has better SHG efficiency than pure ZTS crystal. The Vicker microhardness test was carried out on the grown crystals and Vicker’s Hardness Number was found increase with increase in phosphate mixing. 展开更多
关键词 Phosphate mixed ZINC TRIS THIOUREA sulphate Second harmonic generation NLO material.
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Optical, Thermal and Nonlinear Properties of Tristhiourea Lanthanum Nitrate
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作者 V. S. Kumar R. S. Sundararajan 《Journal of Minerals and Materials Characterization and Engineering》 2015年第3期118-124,共7页
The single crystals of tristhiourea lanthanum nitrate (TTLaN) have been grown by solution growth using slow evaporation technique. The optical study revealed that the crystal has high transmission with lower cut-off w... The single crystals of tristhiourea lanthanum nitrate (TTLaN) have been grown by solution growth using slow evaporation technique. The optical study revealed that the crystal has high transmission with lower cut-off wavelength of 235.78 nm. The EDAX analysis confirmed the grown compound elements. The presence of functional groups was identified through Fourier transform-infrared technique. The thermal stability of the crystal was determined from thermo gravimetric and differential thermal analysis curve. The second harmonic generation behavior of TTLaN crystal was tested by Kurtz-Perry powder technique. This single novel semiorganic crystal of TTLaN showed very good optical transmission property, high thermal stability and large non-linearity nature. 展开更多
关键词 NONLINEAR OPTICAL Tristhiourea LANTHANUM NITRATE Second Harmonic Generation Thermo Gravimetric ANALYSIS Differential THERMAL ANALYSIS
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Fabrication and Research of a Novel NLO Material: Tristhiourea Lanthanum Bromide
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作者 V. S. Kumar R. S. Sundararajan 《Natural Science》 2015年第5期248-254,共7页
The single crystals of tristhiourea lanthanum bromide (TTLaB) have been grown by solution growth using slow evaporation technique. The grown crystals were characterized by single crystal X-ray diffraction (XRD) to stu... The single crystals of tristhiourea lanthanum bromide (TTLaB) have been grown by solution growth using slow evaporation technique. The grown crystals were characterized by single crystal X-ray diffraction (XRD) to study the crystal structure. The presence of functional groups was identified through Fourier transform-infrared technique. The optical study exposed that the crystal has high transmission with lower cut off wavelength of 237.43 nm. The Elemental analysis confirmed atoms present in the grown compound. The NLO (Non Linear Optical) behavior of TTLaB crystal was tested by Kurtz-Perry powder technique. This novel semi-organic single crystal of TTLaB exhibited very good optical transmission property, high mechanical strength and large non-linearity nature. 展开更多
关键词 Nonlinear Optical Tristhiourea LANTHANUM BROMIDE SECOND HARMONIC Generation FOURIER TRANSFORM Infrared spectrum
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Comparative Spectroscopic Studies on Pure, 10 and 50 mol% Glycine Mixed L-Valinium Picrate Crystals
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作者 Antony A. Joseph John David I. Ebenezar Ramachandra C. Raja 《Journal of Minerals and Materials Characterization and Engineering》 2014年第1期8-14,共7页
Nonlinear optical crystals of pure, 10 and 50 mol% glycine mixed L-valinium picrate have been grown from saturated aqueous solution by slow evaporation method at a temperature of 36℃ using a constant temperature bath... Nonlinear optical crystals of pure, 10 and 50 mol% glycine mixed L-valinium picrate have been grown from saturated aqueous solution by slow evaporation method at a temperature of 36℃ using a constant temperature bath of accuracy of ±0.01℃. The synthesized organic optical material has been purified by repeated recrystallization. The cell parameters were calculated using single crystal X-ray diffraction technique which confirmed the crystal system. Optical behavior was examined by UV-Vis-NIR spectrometer in the range from 190 nm to 1100 nm, which revealed the absence of absorption in the entire visible region. Functional groups and modes of vibration were identified by FT-IR spectrometer in the range between 400 cm-1 and 4000 cm-1. The 1H- and 13C NMR spectra of grown crystals were recorded using D2O as solvent on a Bruker 300 MHz (Ultrashield) TM instrument at 23℃ (300 MHz for 1H NMR and 75 MHz for 13C NMR) to confirm the molecular structure. The second harmonic generation conversion efficiency was investigated by Kurtz powder method using Nd: YAG laser as a source to explore the NLO characteristics. 展开更多
关键词 Crystal Growth L-Valinium PICRATE FT-IR Nuclear Magnetic Resonance SHG NLO
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Studies on the Effect of Zinc Chloride Mixing on Bisthiourea Cadmium Chloride Crystals
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作者 R. S. Sundararajan M. Senthilkumar C. Ramachandraraja 《Journal of Minerals and Materials Characterization and Engineering》 2013年第6期315-320,共6页
Nonlinear optical Zinc mixed bisthiourea Cadmium chloride (BTCC) crystals were synthesized and grown by slow evaporation method. The FTIR analysis reveals that the C-N stretching frequencies of thiourea are shifted to... Nonlinear optical Zinc mixed bisthiourea Cadmium chloride (BTCC) crystals were synthesized and grown by slow evaporation method. The FTIR analysis reveals that the C-N stretching frequencies of thiourea are shifted towards the higher frequencies for pure and Zinc mixed BTCC and the C = S stretching frequencies are shifted towards the lower frequencies for pure and Zinc mixed BTCC crystals. These observations suggest that the metals coordinate with thiourea through sulphur. UV-Vis-NIR spectra were recorded to study the optical transparency of the grown crystals. The lower cutoff wavelength is observed at 233 nm for the pure BTCC crystals. There is no comparable change in the lower cutoff wavelength for the Zinc mixed BTCC crystals. The Nonlinear Optical (NLO) efficiency of the pure BTCC crystal decreases with the increase percentage mixing of Zinc. The SHG output for BTCC mixed with 1% zinc chloride is almost 9 times greater than the SHG output obtained for Pottasium Dihydrogen Phosphate (KDP) crystal. Vicker’s microhardness test done on the experimental crystals proves their greater physical strength. 展开更多
关键词 ZINC BTCC CRYSTALS NONLINEAR Optical (NLO)
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In Vitro Antioxidant Properties of Phloretin—An Important Phytocompound
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作者 Tamilarasan Nithiya Rajangam Udayakumar 《Journal of Biosciences and Medicines》 2016年第1期85-94,共10页
Reactive oxygen species [ROS] cause oxidative damage to the tissues and protection from such damages is provided by endogenous and exogenous antioxidants. Much research work has been carried out in recent years on the... Reactive oxygen species [ROS] cause oxidative damage to the tissues and protection from such damages is provided by endogenous and exogenous antioxidants. Much research work has been carried out in recent years on the beneficial effect of phenolic compounds which act as natural antioxidants and help to neutralize free radicals. So, this study was aimed to evaluate the in vitro antioxidant capacity of one of the phenolic compounds phloretin. Phloretin was used at four different concentrations like 20, 40, 60 and 80 μg/ml to determine the antioxidant activity by different methods such as total antioxidant capacity, reducing power, DPPH radical scavenging, superoxide anion radical scavenging and metal chelating assays. In addition to that the ascorbic acid was used as reference compound. The results showed that the phloretin displayed potent in vitro antioxidant capacity. It was able to scavenge different in vitro free radicals in all tested concentrations. Among the different concentrations, 80 μg of phloretin has maximum activity when compared to other concentrations in all in vitro antioxidant assays. High antioxidant property and maximum protective effect of phloretin were observed in a concentration dependent manner. The results were expressed as IC<sub>50</sub> value. The lowest IC<sub>50 </sub>value indicates the highest scavenging activity. The reducing power of the phloretin was also found in concentration dependent. According to the results of this study, we concluded that the phloretin possesses antioxidant property. Therefore, phloretin is a powerful antioxidant phytocompound which can protect biological systems against the oxidative stress. From this study, we suggest that the phloretin may be used as a dietary natural antioxidant supplement for preventing free radical related diseases. 展开更多
关键词 Antioxidant Activity In Vitro PHLORETIN DPPH Free Radicals
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Growth and Characterization of Ethylene Diamine Tetra Acetate (EDTA) Doped Lithium Sulphate Monohydrate Crystals
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作者 R. Manimekalai A. Puhal Raj C. Ramachandra Raja 《Optics and Photonics Journal》 2012年第3期216-221,共6页
Nonlinear optical single crystals of Ethylene Diamine Tetra Acetate (EDTA) doped lithium sulphate monohydrate are successfully grown by using slow evaporation technique at room temperature with double distilled water ... Nonlinear optical single crystals of Ethylene Diamine Tetra Acetate (EDTA) doped lithium sulphate monohydrate are successfully grown by using slow evaporation technique at room temperature with double distilled water as solvent. In order to know its suitability for device fabrication, different characterization analyses have been performed. The single crystal X-ray diffraction (XRD) and powder X-ray diffraction methods are used for identifying the structural parameters of grown crystals. It is found that the addition of dopant doesn’t change the crystal structure. The range and percentage of optical transmission as well as absorption are ascertained by recording UV-Vis-NIR spectrum. No absorption in the entire visible region implies that it is a potential candidate for optoelectronic applications. The modes of vibration of different groups present in the crystals are identified by FT-IR technique. To understand the thermal properties, thermo gravimetric and differential thermal analyses (TGA & DTA) were carried out. The melting point was confirmed by differential scanning calorimetric (DSC) analysis. The amount of dopant included into the crystals was estimated by colorimetric method. The second harmonic generation efficiency measured by Kurtz powder technique is 0.53 times that of potassium dihydrogen orthophosphate. 展开更多
关键词 Nonlinear Optical Crystal GROWTH from Solution CHARACTERIZATION Semi Organic Material
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Schur Complement of con-s-k-EP Matrices
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作者 B. K. N. Muthugobal 《Advances in Linear Algebra & Matrix Theory》 2012年第1期1-11,共11页
Necessary and sufficient conditions for a schur complement of a con-s-k-EP matrix to be con-s-k-EP are determined. Further it is shown that in a con-s-k-EPr matrix, every secondary sub matrix of rank “r” is con-s-k-... Necessary and sufficient conditions for a schur complement of a con-s-k-EP matrix to be con-s-k-EP are determined. Further it is shown that in a con-s-k-EPr matrix, every secondary sub matrix of rank “r” is con-s-k-EPr. We have also discussed the way of expressing a matrix of rank r as a product of con-s-k-EPr matrices. Necessary and sufficient conditions for products of con-s-k-EPr partitioned matrices to be con-s-k-EPr are given. 展开更多
关键词 con-s-k-EP MATRICES Partitioned MATRICES SCHUR COMPLEMENTS
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Studies on the Growth and Characterization of L-Arginine Maleate Dihydrate Crystal Grown from Liquid Diffusion Technique
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作者 K. Ramya C. Ramachandra Raja 《Journal of Minerals and Materials Characterization and Engineering》 2016年第2期143-153,共11页
Nonlinear optical crystals of L-Arginine maleate dihydrate were grown from liquid diffusion method. The lattice parameters of the crystal were identified using single crystal and powder crystal X-ray diffraction analy... Nonlinear optical crystals of L-Arginine maleate dihydrate were grown from liquid diffusion method. The lattice parameters of the crystal were identified using single crystal and powder crystal X-ray diffraction analyses. Fourier transform infrared spectroscopy and Fourier transform Raman spectroscopy were made to study the vibrational functional groups in the grown crystal. Optical absorption and transmission ranges were measured from UV-VIS-NIR spectrum. The molecular structure of the crystal is established through <sup>1</sup>H-NMR and <sup>13</sup>C-NMR studies. Thermal stabilities and decomposition of the grown crystal were studied from TG/DTA and DSC analyses. Nonlinear optical property of the crystal was determined by Kurtz and Perry powder technique. 展开更多
关键词 Amino Acids Liquid Diffusion Method NMR Spectral Studies Nonlinear Optical Material
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Combined Experimental and Computational Investigation of 2-(2-Hydroxyphenylimino)Phenolic Derivatives:Synthesis,Molecular Structure and NLO Studies
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作者 V.Duraisamy Nadhiya Rathinam Kumaresan 《International Journal of Organic Chemistry》 2017年第2期185-217,共33页
A series of substituted 2-(2-hydroxyphenylimino) phenolic (salen) derivatives (1-4) have been synthesized and their structures of obtained compound were characterized by analytical, FT-IR, UV-Vis and 13C{1H}-NMR exper... A series of substituted 2-(2-hydroxyphenylimino) phenolic (salen) derivatives (1-4) have been synthesized and their structures of obtained compound were characterized by analytical, FT-IR, UV-Vis and 13C{1H}-NMR experimentally. The geometry structure optimization, frequencies (IR), NMR, electronic character, frontier molecular orbital (HOMO-LUMO) and first static hyperpolarizability (βtot) studies of reported compounds were calculated using DFT with B3LYP/6-311G(d,p) level of theory. The calculated HOMO and LUMO energies showed that charge transfer occurs within the molecule and from the MEP, the molecular stability and bond strength have been explained. In addition to that influence of energy gap (?Egap) between the HOMO-LUMO orbitals on the first static hyperpolarizability (βtot), we calculated the ?Egap for all the salen compounds. These results reveals that the smaller HOMO-LUMO ?Egap is, larger the βtot is. 展开更多
关键词 SALEN PES HOMO-LUMO MEP △E_(gap) HYPERPOLARIZABILITY
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ElasticWaves in Generalized Thermo-Piezoelectric Transversely Isotropic Circular Bar Immersed in Fluid
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作者 Palaniyandi Ponnusamy 《Advances in Applied Mathematics and Mechanics》 SCIE 2016年第1期82-103,共22页
In this paper,a mathematical model is developed to study the wave propagation in an infinite,homogeneous,transversely isotropic thermo-piezoelectric solid bar of circular cross-sections immersed in inviscid fluid.The ... In this paper,a mathematical model is developed to study the wave propagation in an infinite,homogeneous,transversely isotropic thermo-piezoelectric solid bar of circular cross-sections immersed in inviscid fluid.The present study is based on the use of the three-dimensional theory of elasticity.Three displacement potential functions are introduced to uncouple the equations of motion and the heat and electric conductions.The frequency equations are obtained for longitudinal and flexural modes of vibration and are studied based on Lord-Shulman,Green-Lindsay and Classical theory theories of thermo elasticity.The frequency equations of the coupled system consisting of cylinder and fluid are developed under the assumption of perfectslip boundary conditions at the fluid-solid interfaces,which are obtained for longitudinal and flexural modes of vibration and are studied numerically for PZT-4 material bar immersed in fluid.The computed non-dimensional frequencies are compared with Lord-Shulman,Green-Lindsay and Classical theory theories of thermo elasticity for longitudinal and flexural modes of vibrations.The dispersion curves are drawn for longitudinal and flexural modes of vibrations.Moreover,the dispersion of specific loss and damping factors are also analyzed for longitudinal and flexural modes of vibrations. 展开更多
关键词 Piezoelectric cylinders/plates thermo-elastic thermal cylinder immersed in fluid solid-fluid interaction transversely isotropic cylinder
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Evaluation of antibacterial activity of zinc oxide nanoparticles synthesized using phycobilins of Anabaena variabilis NTSS17
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作者 Thangaraj Ramasamy Santhoshkumar Subramaniyam +5 位作者 Dhanasekaran Dharumadurai Kala Karuppannan Alharbi Naiyf Sultan Arunachalam Chinnathambi Ali Alharbi Sulaiman Thajuddin Nooruddin 《Journal of Coastal Life Medicine》 2015年第12期944-949,共6页
Objective:To evaluate the antibacterial activity of zinc oxide nanoparticles synthesized using phycobilins of Anabaena variabilis NTSS17.Methods:The cyanobacterial isolate was collected from paddy field and morphologi... Objective:To evaluate the antibacterial activity of zinc oxide nanoparticles synthesized using phycobilins of Anabaena variabilis NTSS17.Methods:The cyanobacterial isolate was collected from paddy field and morphologically identified as Anabaena variabilis NTSS17,that produces a pigment i.e.phycobiliproteins.The biosynthesized zinc nanoparticles were characterized by different spectroscopic and analytical techniques such as UV-visible spectrophotometer,Fourier transform infrared spectroscopy and X-ray diffraction which confirmed the formation of zinc nanoparticles.Results:Antibacterial activity of zinc oxide nanoparticles was examined against Escherichia coli,Rhodococcus rhodochrous and Pseudomonas aeruginosa.The maximum zone of inhibition occurred at 5 mg/1000 mL concentration of zinc oxide nanoparticles.Conclusions:Due to potent antimicrobial and intrinsic properties of zinc oxide,it can be actively used for biomedical applications. 展开更多
关键词 Anabaena variabilis NTSS17 PHYCOBILINS Zinc oxide nanoparticles Antibacterial activity
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Phytochemical constituents and larvicidal activity of Tragia involucrata Linn.(Euphorbiacea)leaf extracts against chikungunya vector,Aedes aegypti(Linn.)(Diptera:Culicidae)
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作者 Ramar Ganasekar Jeyasankar Alagarmalai 《Journal of Coastal Life Medicine》 2016年第1期53-55,共3页
Objective:To determine the phytochemical and larvicidal activity of Tragia involucrata(T.involucrata)leaf extracts against fourth instar larvae of Ae.aegypti.Methods:Phytochemical analysis of hexane leaf extract was p... Objective:To determine the phytochemical and larvicidal activity of Tragia involucrata(T.involucrata)leaf extracts against fourth instar larvae of Ae.aegypti.Methods:Phytochemical analysis of hexane leaf extract was performed and larvicidal activity was determined against Ae.aegypti at concentrations of 50,100,150,200 and 250 mg/L.Larval mortality was assessed after 24 h.Results:The hexane extracts of T.involucrata was found to be higher mortality against the larvae of Ae.aegypti with a LC_(50) value of 153.51 mg/L.Conclusions:These results suggested that the leaf extracts of T.involucrata showed potential to be used as an ideal ecofriendly approach for the control of the Ae.aegypti. 展开更多
关键词 PHYTOCHEMICAL LARVICIDAL Tragia involucrata Leaf extract Aedes aegypti
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