检索结果-南通市图书馆

Praseodymium metal nanorods as a 5-fluorouracil carrier

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第7期42卷 1328-1336,I0005页

作者： varnitha Manikantan Govindaraj Sri varalakshmi Ujma Ashapak Tamboli Archana Sumohan pillai Aleyamma Alexander Anushka Lucas Bose Allben Akash Israel v.M.v.Enoch Centre for Nanoscience and Genomics Karunya Institute of Technology and Sciences(Deemed University)Coimbatore641114Tamil NaduIndia Department of Applied Chemistry Karunya Institute of Technology and Sciences(Deemed University)Coimbatore641114Tamil NaduIndia

Interest in metal nanoparticles as nanoscale drug-carrying vehicles has been *** such an aspect,lanthanide metal nanoparticles are particularly ***,we report praseodymium nanoparticles as a novel anticancer therapeutic transporting *** material was made as a composite with the supramolecular host polymer,poly-β-*** praseodymium nanorods were characterized using standard analytical techniques,including X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and thermogravimetric analysis(TGA).In addition,they were imaged using transmission electron *** nanostructures are a long rod-shaped material with 2.0±0.1μm in length and 230±10 nm in *** material shows a saturation magnetization value above 30 emu/g with a coercivity value of 130 *** nanocarrier is freighted with the drug 5-fluorouracil,and the encapsulation efficiency is 76.09%.The drug release is continuous from the nanocarrier(polymer-containing praseodymium nanoparticles)and proceeds for above 250 *** in vitro cytotoxicities of the blank nanocarrier and the 5-fluorouracil-loaded one are deduced by testing them on MCF-7 and vero(non-cancerous)cell *** cytotoxicity on the cancerous cell lines is observed,whereas the non-cancerous cells are *** IC_(50)values on the cell lines are reported.

关键词： Metal nanoparticles Praseodymium Poly-cyclodextrin Drug delivery Anticancer activity Rare earths

Laboratory evaluation of toxicity of selected insecticides against egg and larval stages of cotton pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae)

在线全文

学校读者我要写书评

暂无评论

Journal of Cotton Research 2024年第1期7卷 15-28页

作者： BUSNOOR Abhishek v. WADASKAR R.M. FAND Babasaheb B. TAMBE v.J. pillai T. MAHULE D.J. NAGRARE v.S. PRASAD Y.G. Entomology Section College of Agriculture(Dr.Panjabrao Deshmukh Krishi Vidyapeeth)Nagpur 440001MaharashtraIndia Indian Council of Agricultural Research-Central Institute for Cotton Research Nagpur 441108MaharashtraIndia

Background The cryptic nature of pink bollworm Pectinophora gossypiella(Saunders)larvae enables its reduced vul-nerability to insecticidal ***,the development of resistance against Bacillus thuringiensis(Bt)toxins posed a serious threat to transgenic cotton *** necessitated determining the critical timing of spray applications on the control *** study assessed the influence of egg age(freshly laid ***-day-old)and the loca-tion of larvae(directly exposed to the insecticide residues on the boll rind *** inside the bolls)on insecticide control *** The results revealed a significant decrease in the ovicidal activity of tested insecticides with an increase in the age of eggs from one day old to three days old(paired t-test,Pvae directly exposed to the insec-ticide residues on the boll rind were more susceptible(>80%mortality)than the larvae exposed after they had bur-rowed inside the bolls(velopmental biology were more pronounced in the experiment on pre-larval release insecticide treatment compared with insecticide treatment given post-larval release and entry inside the *** Egg age influences the insecticide susceptibility,as does the larval location,directly exposed vs bur-rowed inside the *** eggs and the larvae that had burrowed inside the green bolls of cotton were relatively less susceptible to the insecticide *** toxic effects of insecticides on egg and larval stages were primar-ily *** findings are significant for devising a comprehensive strategy for pink bollworm management on a sustainable basis.

关键词： Bioefficacy Cotton Insecticides Pink bollworm Pectinophora gossypiella Timings of spray

Detection of Fuel Adulteration Using Wave Optical with Machine Learning Algorithms

在线全文

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2022年第4期41卷 19-33页

作者： S.Dilip Kumar T.v.Sivasubramonia pillai Department of Instrumentation and Control Engineering Sri Krishna College of TechnologyCoimbatore641105TamilnaduIndia Department of Physics University College of EngineeringNagercoil629004TamilnaduIndia

Fuel is a very important factor and has considerable inﬂuence on the air quality in the environment,which is the heart of the *** increase of vehi-cles in lived-in areas results in greater emission of carbon particles in the *** fuel causes more contaminated particles to mix with breathing air and becomes the main source of dangerous *** is the mixing of foreign substances in fuel,which damages vehicles and causes more health problems in living beings such as humans,birds,aquatic life,and even water resources by emitting high levels of hydrocarbons,nitrogen oxides,and carbon *** frequent blending liquids are lubricants and kerosene in the petrol,and its adulteration is a considerable problem that adds to environ-mental *** study focuses on detecting the adulteration in petrol using sensors and machine learning algorithms.A modiﬁed evanescent wave opticalﬁber sensor with discrete wavelet transform is proposed for classiﬁcation of adult-erated data from the ***,support vector machine classiﬁer is used for accurate *** sensor isﬁrst tested with fuel and numerical data is classiﬁed based on machine learning ***,the result is eval-uated with less error and high accuracy of 99.9%,which is higher than all existing techniques.

关键词： Petrol adulteration discrete wavelet transform modiﬁed evanescent wave opticalﬁber SvM classiﬁer

vLSI Implementation of Optimized 2D SIMM Chaotic Map for Image Encryption

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Automation & Soft Computing 2023年第3期35卷 3155-3168页

作者： M.Sundar Prakash Balaji v.R.vijaykumar Kamalraj Subramaniam M.Kannan v.Ayyem pillai Department of Electronics and Communication Engineering RVS College of Engineering and TechnologyCoimbatore641402India Department of Electronics and Communication Engineering Anna University Regional CampusCoimbatore641046India Department of Biomedical Engineering Karpagam Academy of Higher EducationCoimbatore641021India Department of Electronics MIT CampusChennai600044India Department of Electronics and Communication Engineering Gokaraju Rangaraju Institute of Engineering and TechnologyHyderabad500090India

The current research work proposed a novel optimization-based 2D-SIMM(Two-Dimensional Sine Iterative chaotic map with inﬁnite collapse Mod-ulation Map)model for image *** proposed 2D-SIMM model is derived out of sine map and Iterative Chaotic Map with Inﬁnite Collapse(ICMIC).In this technique,scrambling effect is achieved with the help of Chaotic Shift Transform(CST).Chaotic Shift Transform is used to change the value of pixels in the input image while the substituted value is cyclically shifted according to the chaotic sequence generated by 2D-SIMM *** chaotic sequences,generated using 2D-SIMM model,are sensitive to initial *** the proposed algorithm,these initial conditions are optimized using JAYA optimization *** coefﬁcient and entropy are considered asﬁtness functions in this study to evaluate the best solution for initial *** simulation results clearly shows that the proposed algorithm achieved a better performance over existing *** addition,the vLSI implementation of the proposed algorithm was also carried out using Xilinx system *** optimization,the correlation coefﬁcient was-0.014096 and without optimization,it was 0.002585.

关键词： Chaotic mapping 2D-SIMM encryption decryption jaya optimization

Biodiversity and seasonal variation of benthic macrofauna in Minicoy Island, Lakshadweep,India

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2014年第10期33卷 58-73页

作者： Dalia Susan v Satheesh Kumar P. pillai N. G. K Central Marine Fisheries Research Institute Kochi Kerala 682018 India

From the Indian coast only limited data are available on the benthic fauna of the seagrass communities. In this study, seasonal variation in the distribution of macrobenthos and influence of environmental parameters was explored at four seagrass beds and two mangrove stations along the Minicoy Island, Lakshadweep, India, from September 1999 to August 2001. A total of 160 macrobenthic species from eight major groups represented the macrofauna of the Minicoy Island. Of the identified taxa, molluscs 70（gastropods 41.46%, bivalves 7.5%）, polychaetes 27（16.88%）, crustaceans 30（18.75%）, echinoderms 11（6.88%） and remaining others. Average seasonal abundance of benthic macrofauna ranged from 219 to 711 ind./m2, species diversity varied from 1.45 to 3.64 bits per individual, species richness index ranged from 4.01 to 26.17, evenness 0.69 to 1.66. In general, the higher abundance and species diversity was noticed in southern seagrass stations and northern seagrass stations, but in the mangrove stations comparatively low species diversity was observed. Three-way analysis of variance indicated that all communities resulted as being significantly different between seagrass and mangrove station, mainly when the seasonal interaction was considered. Multivariate analyses were employed to help define benthic characteristic and the relationship between environmental parameters at the six monitoring stations. Results of cluster analyses and multidimensional scale plot suggest that for mangrove region, different physiographic provinces, lower salinity, dissolved oxygen and sediment biotic structure have a higher influence on the species composition and diversity than other oceanographic conditions.

关键词： abundance seagrass macrobenthos mangrove Minicoy Island Lakshadweep

Tight Focusing Properties of Radially Polarized Gaussian Beams with Pair of vortices

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2016年第12期33卷 73-76页

作者： *** K.B.Rajesh M.Udhayakumar Z.Jaroszewicz T.v.S.pillai Department of Physics St.Xavier's Catholic College of EngineeringNagercoilIndia Department of Physics Chikkanna Government Arts College Department of Physical Optics Institute of Applied OpticsPolandand National Institute of Telecommunications Department of Physics University College of EngineeringNagercoilIndia

The tight focusing properties of a radially polarized Gaussian beam with a nested pair of vortices having a radial wave front distribution are investigated theoretically by the vector diffraction theory. The results show that the optical intensity in the focal region can be altered considerably by changing the location of the vortices nested in a radially polarized Gaussian beam. It is noted that focal evolution from one annular focal pattern to a highly confined focal spot in the transverse direction is observed corresponding to the change in the location of the optical vortices in the input plane. It is also observed that the generated focal hole or spot lead to a focal shift along the optical axis remarkably under proper radial phase modulation. Hence the proposed system may be applied to construct tunable optical traps for both high and low refractive index particles.

关键词： of is on in for Tight Focusing Properties of Radially Polarized Gaussian Beams with Pair of vortices with

Synthesis and Characterization of Kalata B2 Cyclotide (GLPvCGETCFGGTCNTPGCSCTWPICTRD) on Wang Resin, as Solid Support

在线全文

学校读者我要写书评

暂无评论

Open Journal of Medicinal Chemistry 2020年第2期10卷 46-55页

作者： verma Deepshikha pillai v. N. Rajasekharan Department of Chemistry Mewar University Gangrar Chittorgarh Rajasthan India

With the help of the solid phase peptide synthesizing method, we synthesized Kalata B2 cyclotide and the final product was purified by preparative HPLC. The sequence of Kalata B2 is GLPvCGETCFGGTCNTPGCSCTWPICTRD and its m/z M + H mass is 2955.53. It had been first isolated from Oldenlandia affinis plant leaves extract which belongs to Rubiaceae family. The synthesis of Kalata B2 has been characterized through UPLC/MS, LC/MS, CD, 1HNMR, and IR.

关键词： UPLC LC/MS 1HNMR IR

Field and Laboratory Observations on Predation and Prey Selectivity of the Scyphomedusa Chrysaora *** in Southeast Indian Waters

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2011年第1期10卷 47-54页

作者： Govindan Kanagaraj Pazhaniyappan Ezhilarasan Pitchai Sampathkumar André C.Morandini velayudhan pillai Sivakumar Southeastern Institute of Marine Biology Thomas Nagar Department of Zoology V.O.Chidambaram College Centre of Advanced Study in Marine Biology Departamento de Zoologia Instituto de BiociênciasUniversidade de So Paulo

Chrysaora ***,one of the most abundant medusae species in India,seems to be an important predator in the coastal waters of Bay of *** ability of Chrysaora *** to feed at maximum rate in high prey concentrations implies that this jellyfish can efficiently exploit dense prey patches,at least for a short *** study presents preliminary information regarding digestion and feeding rate upon copepods in a warm water *** ingestion rate of the average-sized medusae Chrysaora *** is well balanced in nature,which in turn implies that this jellyfish is tuned for optimal utilization of available prey *** with earlier research indicates that prey escape speed is one important factor governing which prey will be captured.A full understanding of predation mechanics awaits further investigation of both predator and prey ***,because of the scarcity of long-term quantitative population data most insights have to be made ***,low abun-dance of Chrysaora *** in the water column during summer (May 2007) and the overall annual abundance seem not to con-siderably affect the zooplankton population,especially *** present work contributes to the knowledge of prey-predator relationship of the forgotten fauna in Indian waters,which is especially crucial for understanding the process of ecological recovery of coastal water environment.

关键词：被捕食印度河比照实验室东南亚动物种群沿岸海域环境生态

Design of Ultra-Low Loss Highly Nonlinear Dispersion Flattened Octagonal Photonic Crystal Fibers

在线全文

学校读者我要写书评

暂无评论

Optics and Photonics Journal 2015年第12期5卷 335-343页

作者： G. Dhanu Krishna G. Prasannan S. K. Sudheer v.P. Mahadevan pillai Department of Optoelectronics University of Kerala Thiruvananthapuram India

In this study, Octagonal Photonic Crystal Fiber (O-PCF) structures are designed for different air filling fractions with fixed pitch length of 2.2 μm. The light propagating characteristics of PCF structures such as effective refractive index, confinement loss, chromatic dispersion mode effective area and nonlinear coefficient are numerically analyzed. The simulation results show that the fibers have dispersion flattened, ultra-low loss highly nonlinear nature in the wavelength region 1.3 μm to 1.7 μm.

关键词： Photonic Crystal Fiber (PCF) Confinement Loss Effective Mode Area Chromatic Dispersion