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71篇 您的检索式:作者名="Rahuman"
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1Histopathological studies and oxidative stress of synthesized silver nanoparticles in Mozambique tilapia (Oreochromis mossambicus)显示文摘To evaluate the potential environmental effects of engineered nano metals,it is important to determine the adverse effects of various nanomaterials on aquatic species.Adult tilapia (Oreochromis mossambicus) were maintained in 10 L glass aquaria,and exposed to a graded series of synthesized silver nanoparticles (Ag-NPs) at 25,50 and 75 mg/L for eight days.The LC 50 value was 12.6 mg/L.Reduced activities of antioxidant enzymes and the contents of antioxidants were lowered in the gills and liver of fishes treated with AgNPs,which resulted in heavy accumulation of free radicals.Histopathological results imply that the balance between the oxidative and antioxidant system in the fish was broken down during Ag-NPs exposure.The principal concern related with the release of nanomaterials and their smaller particle may change the materials transport and potential toxicity to aquatic organisms compared to larger particles.Rajakumar Govindasamy Abdul Abdul Rahuman 2012Journal of Environmental Sciences2012,24,6:14
2Larvicidal and repellent activity of medicinal plant extracts from Eastern Ghats of South India against malaria and filariasis vectors显示文摘Objective:To evaluate the larvicidal and repellent activities of ethyl acetate and methanol extracts of Acacia concinna(A.concinna),Cassia siamea(C.siamea).Conundrum sativum(C. sativum),Cuminum cyminum(C.cyminum),Lantana camma(L.camara),Nelumbo nucifera (N.nucifera) Phyllanlhus amarus(P.amarus).Piper nigrum(P.nigrum) and Trachyspermum ammi(T.ammi) against Anopheles stephensi(An.stephensi) and Culex quinquefasciatus(Cx. quinquefasciatus).Methods:The larvicidal activity of medicinal plant extracts were tested against earl) fourth-instar larvae of malaria and filariasis vectors.The mortality was observed 24 h and 48 h after treatment,data were subjected to probit analysis to determine the lethal concentrations(LC50 and LC90) to kill 50 and 90 per cent of the treated larvae of the tested species. The repellent efficacy was determined against two mosquito species at five concentrations(31.25. 62.50.125.00.250.00,and 500.00 ppm) under the laboratory conditions.Results:All plant extracts showed moderate effects after 24 h and 48 h of exposure;however,the highest activity was observed after 24 h in the leaf methanol extract ol N.nucifera.seed ethyl acetate and methanol extract of P.nigrum against the larvae of An.Stephensi(LC50 = 34.76.24.54 and 30.20 ppm) and against Cx.quinquefasciatus(LC50= 37.49.43.94 and 57.39 ppm),respectively.The toxic effect of leaf methanol extract of C.siamea,seed methanol extract of C.cyminum,leaf ethyl acetate extract of N.nucifera.leaf ethyl acetate and methanol extract of P.amarus and seed methanol extract of T.ammi were showed 100%mortality against An.stephensi and Cx.quinquefasciatus alter 48 h exposer.The maximum repellent activity was observed at 500 ppm in methanol extracts of N. nucifera.ethyl acetate and methanol extract of P.nigrum and methanol extract of T.ammi and the mean complete protection time ranged from 30 to 150 min with the different extracts tested. Conclusions:These results suggest that the leaf and seed extracts of C.siamea.N.nucifera.P. amarus.P.nigrum and T.ammi have the potential to be used as an ideal ecofriendly approach for the control of the An.stephensi and Cx.quinquefasciatus.Chinnaperumal Kamaraj Abdul Abdul Rahuman Asokan Bagavan Gandhi Elango Abdul Abduz Zahir Thirunavukkarasu Santhoshkumar 2011Asian Pacific Journal of Tropical Medicine2011,4,9:5
3Isolation and identification of mosquito larvicidal compound from Abutilon indicum (Linn.) Sweet显示文摘A. Abdul Rahuman Geetha Gopalakrishnan P. Venkatesan Kannappan Geetha 2008Parasitology Research2008,,5:3
4Larvicidal potential of medicinal plant extracts against Anopheles subpictus Grassi and Culex tritaeniorhynchus Giles (Diptera: Culicidae)显示文摘C. Kamaraj A. Bagavan A. Abdul Rahuman A. Abduz Zahir G. Elango G. Pandiyan 2009Parasitology Research2009,,5:3
5Larvicidal activity of green synthesized silver nanoparticles using bark aqueous extract of Ficus racemosa against Culex quinquefasciatus and Culex gelidus显示文摘Objective:To investigate the larvicidal activity of synthesized silver nanoparticles(Ag NPs) utilizing aqueous bark extract of Ficus racemosa(F.racemosa) was tested against fourth instar larvae of filariasis vector,Culex quinquefasciatus(Cx.quinquefasciatus) and japanese encephalitis vectors,Culex gelidus(Cx.gelidus).Methods:The synthesized Ag NPs was characterized by UV-vis spectrum,X-ray diffraction(XRD),Scanning electron microscopy(SEM) and Fourier transform infrared(FTIR).The larvicidal activities were assessed for 24 h against the larvae of Cx.quinquefasciatus and Cx.gelidus with varying concentrations of aqueous bark extract off.racemosa and synthesized Ag NPs.LC50 and r2 values were calculated.Results:The maximum efficacy was observed in crude aqueous extract of F.racemosa against the larvae of Cx.quinquefasciatus and Cx.gelidus(LC50=67.72 and 63.70 mg/L;r2=0.995 and 0.985) and the synthesized Ag NPs(LC50=12.00 and 11.21 mg/L;r2=0.997 and 0.990).respectively.Synthesized Ag NPs showed the XRD peaks at 2θvalues of 27.61,29.60,35.48,43.48 and 79.68 were identified as (210),(121),(220),(200) and(311) reflections,respectively.The FTIR spectra of Ag NPs exhibited prominent peaks at 3 425,2 878,1 627 and 1 382 in the region 500-3 000 cm-1.The peaks correspond to the presence of a stretching vibration of(NH) C=O group.SEM analysis showed shape in cylindrical,uniform and rod with the average size of 250.60 nm.Conclusions:The biosynthesis of silver nanoparticles using bark aqueous extract of F.racemosa and its larvicidal activity against the larvae of disease spreading vectors.The maximum larvicidal efficacy was observed in the synthesized Ag NPs.Kanayairam Velayutham Abdul Abdul Rahuman Govindasamy Rajakumar Selvaraj Mohana Roopan Gandhi Elango Chinnaperumal Kamaraj Sampath Marimuthu Thirunavukkarasu Santhoshkumar Moorthy Iyappan Chinnadurai Siva 2013Asian Pacific Journal of Tropical Medicine2013,6,2:2
6Laboratory study on larvicidal activity of indigenous plant extracts against Anopheles subpictus and Culex tritaeniorhynchus显示文摘G. Elango A. Abdul Rahuman A. Bagavan C. Kamaraj A. Abduz Zahir C. Venkatesan 2009Parasitology Research2009,,6:2
7Efficacy of larvicidal botanical extracts against Culex quinquefasciatus Say (Diptera: Culicidae)显示文摘A. A. Rahuman A. Bagavan C. Kamaraj E. Saravanan A. A. Zahir G. Elango 2009Parasitology Research2009,,6:2
8Acaricidal activity of synthesized titanium dioxide nanoparticles using Calotropis gigantea against Rhipicephalus microplus and Haemaphysalis bispinosa显示文摘Objective:To assess the acaricidal activity of titanium dioxide nanoparticles(TiO_2 NPs)synthesized from flower aqueous extract of Calotropis gigantea(C.gigantea)against the larvae of Rhipicephalus(Boophilus)microplus[R.(B.)microplus]and the adult of Haemaphrysalis bispinosa(H.bispinosa).Methods:The lyophilized C.gigantea flower aqueous extract of 50 mg was added with 100 mL of TiO(OH_2)(10 mM)and magnetically stirred for 6 h.Synthesized 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 H.bispinosa were exposed to filter paper impregnated method.Results:XRD confirmed the crystalline nature of the nanoparticles with the mean size of 10.52 nm.The 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 C-O.SEM micrographs of the synthesized TiO_2 NPs showed the aggregated and spherical in shape.The maximum efficacy was observed in the aqueous flower extract of C.gigantea 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 H.bispinosa(LC_(50)=35.22 and 9.15 mg/L and r^2=0.969 and 0.969).respectively.Conclusions:The synthesized TiO_2 NPs were highly stable and had significant acaricidal activity against the larvae of R.(B.)microplus and adult of H.bispinosa.This study provides the first report of synthesized TiO_2 NPs and possessed excellent anti-parasitic activity.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 2013Asian Pacific Journal of Tropical Medicine2013,6,9:2
9Evaluation of larvicidal activity of medicinal plant extracts against three mosquito vectors显示文摘Objective:To evaluate the mosquito larvicidal activity of plant extracts.Methods:The hexane,chloroform,ethyl acetate,acetone,and methanol leaf,flower and seed extracts of Abrus precatorius(A.precatorius),Croton bonplandianum(C.bonplandianum),Cynodon dactylon (C.dactylon),Musa paradisiaca(M.paradisiaca) and Syzygium aromaticum(S.aromaticum) were tested against fourth instar larvae of Anopheles vagus(An.vagus),Armigeres subalbatus (Ar.subalbatus) and Culex vishnui(Cx.vishnui).Results:The highest larval mortality was found in seed ethyl acetate extracts of A.precatorius and leaf extracts of C.bonplandianum, flower chloroform and methanol extracts of M.paradisiaca,and flower bud hexane extract of S. aromaticum against An.vagus with LC50 values of 19.31,39.96,35.18,79.90 and 85.90μg/mL;leaf ethyl acetate and methanol extracts of C.dactylon,flower methanol extract of M.paradisiaca, flower bud methanol extract of S.aromaticum against Ar.subalbatus with LC50 values of 21.67, 32.62,48.90 and 78.28μg/mL,and seed methanol of A.precatorius,flower methanol extract of M.paradisiaca,flower bud hexane extract of S.aromaticum against Cx.vishnui with LC50 values of 136.84,103.36 and 149.56μg/mL,respectively.Conclusions:These results suggest that the effective plant crude extracts have the potential to be used as an ideal ecofriendly approach for the control of disease vectors.This study provides the first report on the larvicidal activity of crude solvent extracts of different mosquitoes.A Bagavan A Abdul Rahuman 2011Asian Pacific Journal of Tropical Medicine2011,4,1:2
10Eclipta prostrata leaf aqueous extract mediated synthesis of titanium dioxide nanoparticles显示文摘G. Rajakumar A. Abdul Rahuman B. Priyamvada V. Gopiesh Khanna D. Kishore Kumar P.J. Sujin 2011Materials Letters2011,,:2
11Biosynthesis of titanium dioxide nanoparticles using bacterium Bacillus subtilis显示文摘A.Vishnu Kirthi A. Abdul Rahuman G. Rajakumar S. Marimuthu T. Santhoshkumar C. Jayaseelan G. Elango A. Abduz Zahir C. Kamaraj A. Bagavan 2011Materials Letters2011,,17:2
12Oviposition-deterrent, ovicidal, and repellent activities of indigenous plant extracts against Anopheles subpictus Grassi (Diptera: Culicidae)显示文摘G. Elango A. Bagavan C. Kamaraj A. Abduz Zahir A. Abdul Rahuman 2009Parasitology Research2009,,6:2
13Antiplasmodial potential of medicinal plant extracts from Malaiyur and Javadhu hills of South India显示文摘Chinnaperumal Kamaraj Naveen Kumar Kaushik Dinesh Mohanakrishnan Gandhi Elango Asokan Bagavan Abdul Abduz Zahir Abdul Abdul Rahuman Dinkar Sahal 2012Parasitology Research2012,,2:2
14Larvicidal efficacy of five cucurbitaceous plant leaf extracts against mosquito species显示文摘A. Abdul Rahuman P. Venkatesan 2008Parasitology Research2008,,1:2
15Organic Process Research & Development 显示文摘Yadav G D Mujeebur Rahuman M S M 20026(5): 706-7132002,6,5:1
16Near-mirror-finish phenomenon in EDM using powder-mixed dielectric 显示文摘WONG Y S LIM L C RAHUMAN I 1998J Mater Proeessing Technol1998,79,13:1
17Cation-exchange resin catalysed acylations and estefification in fine chemical and perfumery industries显示文摘YADAV G D MUJEEBUR RAHUMAN M S M 2002Org Process Res Dev2002,6,2:1
18Screening for antifeedant and larvicidal activity of plant extracts against Helicoverpa armigera (Hübner), Sylepta derogata (F.) and Anopheles stephensi (Liston)显示文摘C. Kamaraj A. Abdul Rahuman A. Bagavan 2008Parasitology Research2008,,6:1
19Activities of clays and ion exchange resins in the synthesis of phthalate esters显示文摘Ganapati D Yadav Mujeebur Rahuman M S M 2004Clean Techn Environ Policy2004,6,:1
20Larvicidal activity of saponin from Achyranthes aspera against Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae)显示文摘A. Bagavan A. A. Rahuman C. Kamaraj Kannappan Geetha 2008Parasitology Research2008,,1:1
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