نتایج جستجو برای: lc90

تعداد نتایج: 276  

Journal: :international journal of nano dimension 0
mohamed yacoob syed ali pg& research department of biotechnology, mohamed sathak college of arts & science, sholingnallur, chennai-600119, tamil nadu, india. v. anuradha pg& research department of biochemistry, mohamed sathak college of arts & science, sholingnallur, chennai-600119, tamil nadu, india. n. yogananth pg& research department of biotechnology, mohamed sathak college of arts & science, sholingnallur, chennai-600119, tamil nadu, india. r. rajathilagam post graduate department of electronic science, mohamed sathak college of arts & science, sholingnallur, chennai-600119, tamil nadu, india. a. chanthuru pg& research department of microbiology, mohamed sathak college of arts & science, sholingnallur, chennai-600119, tamil nadu, india. s. mohamed marzook post graduate department of electronic science, mohamed sathak college of arts & science, sholingnallur, chennai-600119, tamil nadu, india.

to identify the larvicidal activities of silver nanoparticles synthesized with acanthus ilicifolius (a. ilicifolius) leaf extract against the larvae of armigeressubalbatus and aedesaegypti. in vitro larvicidal activities such as lc50 and lc90 were assessed for the a. subalbatus  and ae.aegypti larval species. further, characterization using different techniques such as uv, sem,edax, xrd and fti...

2017
C. Ragavendran T. Mariappan Devarajan Natarajan

Mosquitoes can transmit the terrible diseases to human beings. Soil-borne fungal products act as potential source for low-cost chemicals, used for developing eco-friendly control agents against mosquito-vector borne diseases. The prime aim of study was to check the larvicidal potential of fungus mycelia (by ethyl acetate solvent) extract from Penicillium daleae (KX387370) against Culex quinquef...

2013
Waseem Rizvi Syed Shariq Naeem Anil Kumar Wazahat Hussain

The effect in alcoholic extract of Bark of Albizzia lebbeck was studied for antifilarial activity using Setaria cervi (S. cervi) worm procured from the freshly slaughtered buffalo.We used the whole worm (w.w.) preparation and nerve muscle (n.m.) complex of Setaria cervi (S. cervi). The n.m. complex is made by stripping the cuticle of the worm. The effect was stimulant in nature in both the prep...

Journal: :Indian journal of science and technology 2023

Objectives: To determine the phytochemical screening and major phytocompounds from Indigofera tinctoria leaf methanol extract as well ovicidal larvicidal toxicity towards medical agronomic pests, Aedes aegypti, Culex quinquefasciatus, Spodoptera litura Helicoverpa armigera. Methods: In this study, was done by prescribed method, finding of phyto-constituents were made GC-MS analysis, selected pe...

Journal: :Journal of the American Mosquito Control Association 1997
S A Ritchie M Asnicar B H Kay

Laboratory bioassays were used to determine the efficacy of (S)-methoprene against 7 species of Australian mosquitoes. The 90% lethal concentration (LC90) ranged from 0.17 ppb for Aedes vigilax to 6.54 ppb for Culex sitiens. The survival of adults exposed as larvae to 2 sublethal dosages of (S)-methoprene was compared to a control group. Little effect was noted for Cx. sitiens and Culex annulir...

Journal: :Bangladesh Journal of Zoology 2023

Extracts of Polygonum hydropiper leaves in Methanol was introduced to the 3rd and 4th instar larvae Aedes aegypti with various concentration (.25–1.5 μg/ml). Insecticidal assays data showed significant mortality against larvae. The LC50 LC90 value after 24 hours exposure 0.002 0.47 μg/ml respectively. As predicted result that larvicidal activity P. on Ae. dose reliant. clearly exhibited methano...

Journal: :Journal of economic entomology 2007
Marc C Dolan Gabrielle Dietrich Nicholas A Panella John A Montenieri Joseph J Karchesy

The biocidal activity of three steam distilled wood essential oils-incense cedar, Calocedrus decurrens (Torr.) Florin; Port-Orford-cedar, Chamaecyparis lawsoniana (A. Murr.) Parl.; and western juniper, Juniperus occidentalis (Hook)--were evaluated against adult Aedes aegypti (L.) (Diptera: Culicidae) and Xenopsylla cheopis (Rothchild) (Siphonaptera: Pulicidae) and nymphal Ixodes scapularis Say ...

Journal: :Memorias do Instituto Oswaldo Cruz 2003
Antonieta Rojas de Arias M J Lehane C J Schofield Alain Fournet

We investigated the residual efficacy of four insecticide formulations used in Chagas disease vector control campaigns: cyfluthrin 12.5% suspension concentrace (SC), lambda-cyhalothrin 10% wettable powder (WP), deltamethrin 2.5% SC, and 2.5% WP on four types of circular blocks of wood, straw with mud, straw with mud painted with lime, and mud containing 5% of cement. Three concentrations of the...

2002
CP Anderson CP Reynolds

Patients with high-risk neuroblastoma (NB) initially respond to aggressive, alkylator-based therapy only to die from recurrent disease that is refractory to chemotherapy, including alkylating agents. We examined the ability of buthionine sulfoximine (BSO)-mediated glutathione (GSH) depletion to modulate melphalan (LPAM) resistance in five NB cell lines established after progressive disease foll...

2016
Govindaraju Ramkumar Sengodan Karthi Ranganathan Muthusamy Ponnusamy Suganya Devarajan Natarajan Eliningaya J. Kweka Muthugounder S. Shivakumar

BACKGROUND The resistance status of malaria vectors to different classes of insecticides used for public health has raised concern for vector control programmes. Alternative compounds to supplement the existing tools are important to be searched to overcome the existing resistance and persistence of pesticides in vectors and the environment respectively. The mosquitocidal effects of Glycosmis p...

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