Relevant bibliographies by topics / LC90

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'LC90'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "LC90"

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Hossen, Md Shohag, Shariful Islam, Md Ismail, et al. "Larvicidal activities of 215 medicinal plants extracts against Aedes Aegypti from Bangladesh." Bangladesh Journal of Botany 54, no. 1 (2025): 54–60. https://doi.org/10.3329/bjb.v54i1.80737.

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This study examined the effects of fresh crude extract from 215 plants on the mortality rate of third-instar larvae of Aedes aegypti after a 24-hour exposure. Twenty five plants demonstrated a high mortality rate (up to 80%) at five different concentrations. The LC50, LC90, and LC95 values of the tested plants showed that 15 plants were with 100% larvicidal potential. Stemona tuberosa showed the highest efficacy against Aedes larvae having LC50 = 3.78, LC90 = 7.51, and LC95 = 7.97, while Jatropha gossypifolia showed the lowest efficacy i.e., LC50 = 6.58, LC90 =11.23, and LC95 = 11.31. The extr
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Singh, Gavendra, and Soam Prakash. "Studies on Fungal Cultural Filtrates against AdultCulex quinquefasciatus(Diptera: Culicidae) a Vector of Filariasis." Journal of Parasitology Research 2011 (2011): 1–5. http://dx.doi.org/10.1155/2011/147373.

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Entomopathogenic fungi have significant potential to control mosquito population. The culture filtrates ofFusarium oxysporum, Lagenidium giganteum, Trichophyton ajelloi,andCulicinomyces clavisporuswere evaluated against adults ofCx. quinquefasciatus. The culture filtrates were obtained by filtering the broth through Whatman-1 filter paper. These culture filtrates ofC. clavisporushave been found significantly pathogenic with LC50-2.5, LC90-7.24, and LC99-8.7 ML, respectively, after exposure of 24 h. However, the culture filtrates when were combined, in ratios 1 : 1 : 1 ofFusarium oxysporum, Lag
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Sharower, MG, and MA Latif. "Larvicidal Impact of Some Local Medicinal Plant Extracts Against Aedes Aegypti (L.)." Journal of the Asiatic Society of Bangladesh, Science 44, no. 1 (2018): 61–67. http://dx.doi.org/10.3329/jasbs.v44i1.46546.

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The larvicidal potential of different solvent (hexane, chloroform, ethyl acetate, acetone and methanol) crude leaf extracts of five plants (Blepharis maderaspatensis, Elaeagnus indica, Maesa indica, Phyllanthus wightianus and Memecylon edule) were tested against the fourth-instar larvae of Aedes aegypti. All the tested extracts showed moderate to good larvicidal activities. However, the maximum larval mortality was detected in acetone extract of E. indica (LC50 90.89, LC90 217.21 and LC99 441.88 ppm) followed by M. indica acetone extract (LC50 173.21, LC90 289.86 and LC99 441.04 ppm). The resu
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Ileke, Kayode David. "Entomocidal properties of Monodora myristica (Dunal, 1831) and Conyza sumatrensis (Retzius, 1742-1821) extracts: Studies on two dipterous insect pests Anopheles gambiae (Giles, 1902) and Culex quinquefasciatus (Say, 1823)." Brazilian Journal of Biological Sciences 5, no. 10 (2018): 347–58. http://dx.doi.org/10.21472/bjbs.051014.

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Anopheles gambiae (Giles, 1902) and Culex quinquefasciatus (Say, 1832) mosquitoes are the main vectors of human malaria and lymphatic filariasis, respectively. This study aims to analyze the larvicidal, pupicidal and adulticidal properties of Monodora myristica (Dunal, 1831) and Conyza sumatrensis (Retzius, 1742-1821) extracts against An. gambiae and Cx. quinquefasciatus. The experiment was conducted in the laboratory at ambient temperature of 28 oC +/- 2 oC and 75% +/- 5% relative humidity. The results showed that M. myristica and C. sumatrensis extracts significantly affect all stages of An.
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Kaushik, Shweta, Neeta Raj Sharma, Shashank Garg, Anu Bansal, and T. G. Thomas. "Larvicidal effects of Calotropis procera leaf extracts against Aedes aegypti (L), vector of dengue fever." ENTOMON 47, no. 4 (2022): 415–20. http://dx.doi.org/10.33307/entomon.v47i4.794.

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Leaf extracts of Calotropis procera were tested against late third instar larvae of Aedes aegypti mosquito. Soxhlet extraction of the dried leaves powder with polar and non-polar solvents (water, ethanol, hexane and acetone) was carried out. Larvicidal effects of plant extracts were observed after 24h of exposure. The control group showed no mortality. Ethanolic extract was found more toxic with LC50 1.923 ppm and LC90 8.83 ppm followed by aqueous extract (LC50 2.607 ppm and LC90 11.903 ppm), acetone extract (LC50 4.1 ppm and LC90 16.471 ppm) and hexane extract (LC50 5.364 ppm and LC90 31.759
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Adaikala Raj, G., M. Jayaraman, S. Krishnamoorthy, M. Chandrasekaran, and V. Venkatesalu. "Screening of Different Extracts of Marine Macro Green Algae for Larvicidal Activity against Dengue Fever Mosquito, Aedes aegypti (Diptera: Culiadae)." International Letters of Natural Sciences 62 (March 2017): 44–51. http://dx.doi.org/10.18052/www.scipress.com/ilns.62.44.

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The present study larvicidal activities of hexane, chloroform, ethyl acetate, acetone and methanol extracts of Halimeda macroloba, Decsne, Caulerpa racemosa (Frosk) Weber-Van-Bosses and Ulva lactuca Lin, (Chlorophyceae) against Aedes aegypti. The marine macro green algae extracts were tested against early 4th instar larvae of A. aegypti using WHO protocol and concentrations of 200, 400, 600, 800 and 1000 ppm. The observed mortality was made 24 and 48 h after treatment, data was subjected to probit analysis to determine the lethal concentration (LC50 and LC90) of the treated larvae of the teste
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Adaikala Raj, G., M. Jayaraman, S. Krishnamoorthy, M. Chandrasekaran, and V. Venkatesalu. "Screening of Different Extracts of Marine Macro Green Algae for Larvicidal Activity against Dengue Fever Mosquito, <i>Aedes aegypti</i> (Diptera: Culiadae)." International Letters of Natural Sciences 62 (March 10, 2017): 44–51. http://dx.doi.org/10.56431/p-za9vhz.

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The present study larvicidal activities of hexane, chloroform, ethyl acetate, acetone and methanol extracts of Halimeda macroloba, Decsne, Caulerpa racemosa (Frosk) Weber-Van-Bosses and Ulva lactuca Lin, (Chlorophyceae) against Aedes aegypti. The marine macro green algae extracts were tested against early 4th instar larvae of A. aegypti using WHO protocol and concentrations of 200, 400, 600, 800 and 1000 ppm. The observed mortality was made 24 and 48 h after treatment, data was subjected to probit analysis to determine the lethal concentration (LC50 and LC90) of the treated larvae of the teste
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Marc Koffi, Kouadio Jean. "Effects of Essential Oils of Eucalyptus citriodora (Myrtaceae) and Lippia multiflora (Verbenaceae) on the Survival of Coconut Palm Bug, Pseudotheraptus devastans in Côte d'Ivoire." International Journal of Agriculture and Biology 33, no. 05 (2025): 330504. https://doi.org/10.17957/ijab/15.2309.

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Pseudotheraptus devastans (Heteroptera: Coreidae) is a coconut pest in Côte d'Ivoire. Various larval stages and adults cause deformation of young nuts, sometimes leading to them falling off. The search for a strategy to protect these nuts involved evaluating the efficacy of essential oils of Eucalyptus citriodora and Lippia multiflora on P. devastans. Present study was carried out at the coconut research station of the Centre Nationale de Recherche Agronomique of Côte d'Ivoire. The tests were carried out by spraying EOs at different concentrations on P. devastans larvae and adults. Lethal conc
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D, Ingle H., and Pardeshi A. B. "Biotermiticidal Activity of Jatropha gossypifolia Linn. plant extract against Odontotermes obesus (Isoptera: Termitidae)." International Journal for Research in Applied Science and Engineering Technology 12, no. 5 (2024): 3880–85. http://dx.doi.org/10.22214/ijraset.2024.62452.

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Abstract: Termiticidal potential of methanol and aqueous leaves extract of Jatropha gossypifolia Linn. were studied against Odontotermes obesus. The plant leaves were dried, powdered and extracted with methanol and aqueous solvent in soxhlet apparatus for 24 hrs. The 20 termites were exposed to various concentrations from 9.0 to 14.5 mg/ml) of methanol and of aqueous plant extract of Jatropha gossypifolia and percent mortality were recorded after 24 hrs. The termiticidal activity of leaves extract of Jatropha gossypifolia were (LC10 = 9.8220 mg/ml, LD50 = 10.093, LC90 =12.667 mg/ml) in methano
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Saeed, Usman, Nannim Nanvyat, Likita Mamot, et al. "Larvicidal Effects of Ethanol Leaf Extracts of Artemisia annua, Cymbopogon citratus and Mentha piperita Against Anopheles and Culex Mosquito Larvae." Tropical Journal of Natural Product Research 9, no. 4 (2025): 1711. https://doi.org/10.26538/tjnpr/v9i4.47.

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Mosquitoes are one of the deadliest insects in the world as they serve as important vectors of diseases including yellow fever, malaria, West Nile virus fever, lymphatic filariasis, etc., causing millions of deaths globally. The urgent need for novel and effective insecticides that are affordable and target-specific is highlighted by the problem of insecticide resistance and its consequences on non-target organisms. Plants possess many bioactive compounds, making them suitable alternatives as mosquito control agents. This study investigated the larvicidal activity of Artemesia annua, Cymbopogo
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Dissertations / Theses on the topic "LC90"

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Zhou, Tianhong. "Numerical comparisons of bioassay methods in estimating LC50." Kansas State University, 2010. http://hdl.handle.net/2097/4638.

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Master of Science<br>Department of Statistics<br>Weixing Song<br>The potency of a pesticide or some materials is widely studied in agricultural and biological fields. The level of a stimulus that results in a response by 50% of individuals in a population under study is an important characterizing parameter and it is denoted by the median lethal concentration (LC50) or the median lethal dose (LD50) or median. Estimation of LC50 is a type of quantal response assays that belong to qualitative indirect bioassays. In this report, seven methods of estimating LC50 are reviewed with reference to two
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Kishida, Yusuke. "Chemotherapy-induced neutropenia as a prognostic factor in advanced non-small-cell lung cancer: Results from Japan Multinational Trial Organization LC00-03." Kyoto University, 2010. http://hdl.handle.net/2433/120570.

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Muratti, Ortiz Joseph F. "Comparative Toxicity Responses in Earthworms Lumbricus Terrestris and Eisenia Foetida to Cadmium Nitrate and Chlordane Using Artificial Soil and Filter Paper Exposures." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc500857/.

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This research compares LC50 and LD50 of earthworms, Lumbricus terrestris and Eisenia foetida exposed to cadmium nitrate and chlordane using 48-h contact filter paper (FP) and 14-d artificial soil (AS) protocols. Both LC50 and LD50 showed that chlordane was more toxic than cadmium in both species regardless of the exposure. The reference toxicant 2-chloroacetamide using the standardized 48-h FP exposure was used to assess the general response of the earthworm prior to toxicity experiments. A glucose test was developed as an internal standard to assess homogeneity of mixtures among both replicat
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Quaresma, FabrÃzia da Silva. "Lethal concentration (LC50-96h) and sublethal effects of un-ionized ammonia on haematological para parameters of fingerlings tambacu (Colossoma macropomum x Piaractus mesopotamicus)." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=16666.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>A amÃnia à um composto tÃxico para os organismos aquÃticos e em elevadas concentraÃÃes na Ãgua pode causar diversas alteraÃÃes no animal. Dessa forma, torna-se importante determinar o limite de tolerÃncia dos animais aquÃticos cultivados à essa substÃncia. Sendo assim, o objetivo do trabalho foi determinar a concentraÃÃo letal mÃdia (CL50-96h) da amÃnia nÃo ionizada (NH3) em alevinos de tambacu (Colossoma macropomum x Piaractus mesopotamicus), em teste de toxicidade aguda e avaliar os efeitos de concentraÃÃes subletais atravÃs da a
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LOBO, Lis Tavares Coelho. "Avaliação in vitro e in vivo da atividade antimalárica dos trioxolanos NAC89, LDC67 e LC50 em estirpes sensíveis e resistentes à artemisinina e ao artesunato." Master's thesis, Instituto de Higiene e Medicina Tropical, 2012. http://hdl.handle.net/10362/11333.

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A malária mantem-se como uma das doenças mais importantes do mundo, causando a morte de mais de 1 milhão de pessoas anualmente e elevada morbilidade. Face à propagação da resistência do Plasmodium falciparum à maioria dos medicamentos antimaláricos disponíveis, a Organização Mundial de Saúde (OMS), desde 2006, recomenda a utilização de terapias combinadas com artemisinina (ACTs) como tratamento de primeira linha para a malária não complicada. Em 2008, relatórios clínicos revelaram a falha terapêutica dos ACTs na fronteira Tailândia-Camboja e uma vez que não existem alternativas para o tratamen
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Silva, Maria Amália da. "Ensaios de toxicidade aguda e crônica com Cd, Cu e (Cd + Cu) em Tilápias do Nilo (Oreochromis niloticus)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/64/64135/tde-22042013-161236/.

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Este estudo teve por objetivos conhecer aspectos da toxicidade de Cu e Cd, separadamente e em combinacao (Cu+Cd) em tilapias (Oreochromis niloticus), verificando possiveis efeitos sinergicos ou antagonicos. Determinou-se nessas situacoes, a bioacumulacao dos metais no tecido muscular, branquias e figado dos especimes, enfase ao potencial bioindicador da especie. Para tanto, ensaios de toxicidade aguda na forma estatica foram conduzidos por um periodo de 96 horas. Previamente a esses, foram realizados testes preliminares com as referidas especies quimicas em concentracoes logaritmicas, com o in
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ALMEIDA, Priscilla Rennó. "Toxicidade aguda (LC50) e efeitos comportamentais e morfológicos do formulado comercial Roundup Original® em girinos de Physalaemus cuvieri (anura, leptodactylidae) e Rhinella icterica (anura, bufonidae)." Universidade Federal de Alfenas, 2014. https://bdtd.unifal-mg.edu.br:8443/handle/tede/610.

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O declínio de anfíbios no mundo está cada vez maior e a perda de riqueza muitas vezes está associada a áreas agrícolas. O uso de agrotóxicos, em especial aqueles a base de glifosato é cada vez maior e novas formulações estão sendo desenvolvidas. O presente trabalho avaliou a toxicidade aguda do formulado comercial Roundup Original® e os efeitos comportamentais e morfológicos em girinos de Physalaemus cuvieri e Rhinella icterica. Foram utilizadas cinco diferentes concentrações além do teste Controle nos tempos amostrais de 48 horas e 96 horas. Para P. cuvieri as concentrações utilizadas foram 0
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Pinheiro, Cristiane Garboggini Melo de. "Resposta imune em camundongos balb/c imunizados com um antígeno recombinante de leishmania chagasi (lc9), saponina e interleucina-12 (il-12)." Instituo de Ciências da Saúde, 2007. http://repositorio.ufba.br/ri/handle/ri/19872.

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Submitted by Hiolanda Rêgo (hiolandarego@gmail.com) on 2016-07-28T15:38:47Z No. of bitstreams: 1 Dissertação_ICS_ Cristiane Garboggini Melo de Pinheiro.pdf: 604063 bytes, checksum: 33f2042850962bea522205a8088c5d7f (MD5)<br>Made available in DSpace on 2016-07-28T15:38:47Z (GMT). No. of bitstreams: 1 Dissertação_ICS_ Cristiane Garboggini Melo de Pinheiro.pdf: 604063 bytes, checksum: 33f2042850962bea522205a8088c5d7f (MD5)<br>CAPES<br>Em um estudo prévio, cinco antígenos recombinantes de Leishmania chagasi foram selecionados, através de soro de cão, para avaliação como candidatos a componente d
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Calefi, Fabíola Carreira. "Influência de níveis subletais de amônia na toxicidade de metais em duas espécies de invertebrados /." São Vicente, 2019. http://hdl.handle.net/11449/183131.

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Orientador: Rafael Mendonça Duarte<br>Resumo: As regiões estuarinas vêm historicamente sofrendo impactos negativos devido ao aumento da carga poluidora, onde níveis aumentados de metais, principalmente por atividades industriais, e de amônia, pelo aporte de esgoto e efluentes domésticos, têm sido reportados tanto em água quanto no sedimento. Embora essas substâncias sejam reconhecidas como relativamente tóxicas a invertebrados estuarinos quando testadas isoladamente; poucos estudos têm avaliado como níveis aumentados de amônia afetam a toxicidade de metais. Assim, o presente estudo avaliou os
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Lourenço, Clara Tavares. "Determinaçâo da toxicidade tópica e oral do inseticida fipronil e efeitos de suas doses subletais no comportamento de abelhas sem ferrão Melipona scutellaris (Latreille, 1811)." Universidade Federal de São Carlos, 2012. https://repositorio.ufscar.br/handle/ufscar/10.

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Made available in DSpace on 2016-06-02T18:55:23Z (GMT). No. of bitstreams: 1 4432.pdf: 1388434 bytes, checksum: d65f99bf92f697e1cf8e1d2b5a5fc2f9 (MD5) Previous issue date: 2012-05-09<br>Financiadora de Estudos e Projetos<br>Melipona scutellaris bee, known as "uruçu" belong to the tribe Meliponini, popularly called stingless bees. This bee is endemic in northeastern Brazil and is distinguished by its ease of domestication and management, significant honey production and potential for pollination in greenhouses and open field. The insecticide fipronil acts on the insect nervous system by block
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Books on the topic "LC90"

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Kreger, Michael D. The LD50 (median lethal dose) and LC50 (median lethal concentration) toxicity tests. National Agricultural Library, 1992.

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Kreger, Michael D. The LD50 (median lethal dose) and LC50 (median lethal concentration) toxicity tests. National Agricultural Library, 1992.

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Kreger, Michael D. The LD50 (median lethal dose) and LC50 (median lethal concentration) toxicity tests. National Agricultural Library, 1992.

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Clingerman, Karen J. The LD50 (median lethal dose) and LC50 (median lethal concentration) toxicity tests, January 1980 - August 1990. National Agricultural Library, 1990.

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Clingerman, Karen J. The LD50 (median lethal dose) and LC50 (median lethal concentration) toxicity tests, January 1980 - August 1990. National Agricultural Library, 1990.

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ECFA Workshop on e⁺e⁻ Linear Colliders (1992 Garmisch-Partenkirchen, Germany). LC92, ECFA Workshop on e+e⁻ Linear Colliders, Garmisch-Partenkirchen, 25 July-2 August 1992: Proceedings. Edited by Settles Ron and European Committee for Future Accelerators. Max-Planck-Institut für Physik, 1993.

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Clingerman, Karen J. The LD50 (median lethal dose) and LC50 (median lethal concentration) toxicity tests, January 1980 - August 1990. National Agricultural Library, 1990.

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International, Workshop on Linear Colliders (6th 1995 Tsukuba Japan). Sixth International Workshop on Linear Colliders, LC95: March 27(Mon.)-31(Fri.), 1995, at Tsukuba Center for Institutes, Tsukuba, Japan. National Laboratory for High Energy Physics, 1995.

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1938-, Davies Brian, and Evans, John, 1952 Oct. 16-, eds. Educational policy and social reproduction: Class inscription and symbolic control. Routledge, 2006.

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Gillian, Forrester, ed. Education policy unravelled. Continuum, 2012.

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Book chapters on the topic "LC90"

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Chen, Grace, Sha Ha, and Richard R. Rustandi. "Characterization of Glycoprotein Biopharmaceutical Products by Caliper LC90 CE-SDS Gel Technology." In Methods in Molecular Biology. Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-327-5_12.

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Miller, Laura T., Lionel Stange, Charles MacVean, et al. "LC50." In Encyclopedia of Entomology. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_1976.

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Gooch, Jan W. "LC50." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6820.

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Gooch, Jan W. "LC50 Test." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6821.

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Uçar, Arzu. "LC50 Determination and Probit Analysis." In Springer Water. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-56669-1_5.

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Worobec, R. B. "Moving Average Interpolation for Malathion LC50 Estimation on Dugesia tigrina." In Toxicity Assessment Alternatives. Humana Press, 1999. http://dx.doi.org/10.1007/978-1-59259-718-5_7.

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Enslein, Kurt, Thomas M. Tuzzeo, Harold H. Borgstedt, Benjamin W. Blake, and Jeffrey B. Hart. "Prediction of Rat Oral LD50 From Daphnia Magna LC50 and Chemical Structure." In QSAR in Environmental Toxicology - II. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3937-0_9.

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Santos, Jerffeson Leite, Douglas Rafael e. Silva Barbosa, Giovana Lopes da Silva, et al. "CONTROL OF BLACK APHID (ALPHIS CRACCIVORA) IN COWPEA (VIGNA UNGUICULATA (L.) WALP WITH THE USE OF NEEM EXTRACT AND MANIPUEIRA." In Knowledge Integration: A Multidisciplinary Approach to Science. Seven Editora, 2025. https://doi.org/10.56238/sevened2025.018-041.

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The black aphid Aphis craccivora Koch (Hemiptera: Aphididae) is pointed out as one of the main pests of cowpea, causing injuries through the suction of sap on the plants. Conventional control involves the use of systemic chemical pesticides, which, from indiscriminate use, can cause contamination of the environment, applicators and other people, causing the selection of resistant insect populations. In view of this scenario, this study proposes to evaluate the toxicity, repellency and impact on population growth of A. craccivora when exposed to neem and manipueira extract. Leaf discs of cowpea
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"LC50." In Encyclopedia of Genetics, Genomics, Proteomics and Informatics. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6754-9_9253.

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"LC50." In Encyclopedic Dictionary of Polymers. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_6710.

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Conference papers on the topic "LC90"

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Smith, James P., Ian H. Gilbert, and Jan Erik Solbakken. "Impact Differentiation of Environmentally Friendly versus Standard Corrosion Inhibitor Discharged into a Tropical Marine Environment." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00333.

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Abstract A comparative ecotoxicology investigation has been conducted using field specific parameters to assess the impact of residual corrosion inhibitor standard versus "green ", discharged from offshore facilities. Presented is a modeled estimate of ecological impact and risk associated with produced water / corrosion inhibitor mixtures from a low salinity-high temperature discharge of 142 million L/day into an open sea environment. Impact is assessed by extrapolation of steady state indicator test species LC50 critical body residue (CBR) results applied to an accurate characterization of r
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Kreuser, Richard T., Antoine Vanlaer, and Alexandre Damour. "A Novel Molluscicide, Corrosion Inhibitor, and Dispersant." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97409.

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Abstract The efficacy of filming amines as corrosion inhibitors and dispersants in steam systems is well-documented. A novel formulation retains these functions of traditional filming amines and adds molluscicide capability for controlling macrofouling in fresh water and sea water. Criteria for this development included low toxicity to mammals and to non-target aquatic species, rapid biodegradation, and multifunctionality. Low mammalian toxicity and lack of other hazards exempt it from reporting requirements under SARA Title 3. Toxicity (LC50) levels for rainbow trout and fathead minnow are hi
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Rahmayanti, Sari, and Tri Baskoro T. Satoto. "Fraksi Larut Metanol Kulit Lidah Buaya (Aloe Vera) Sebagai Larvasida terhadap Larva Nyamuk Aedes Aegypti (Diptera: Culicidae)." In Seminar Nasional Penerapan Ilmu Pengetahuan dan Teknologi : kampus merdeka meningkatkan kecerdasan sumberdaya manusia melalui interdispliner ilmu pengetahuan dan teknologi : Pontianak, 24 Agustus 2021. Untan Press, 2021. http://dx.doi.org/10.26418/pipt.2021.15.

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Penyakit Demam Berdarah Dengue (DBD) merupakan penyakit infeksi yang ditularkan melalui gigitan nyamuk Aedes. Penggunaan insektisida sintetis jangka panjang dapat menimbulkan berbagai permasalahan, untuk meminimalisir permasalahan tersebut dapat digunakan larvasida botani yang merupakan insektisida yang bahan dasarnya berasal dari tumbuhan sebagai pengendali larva Aedes sp. Tanaman lidah buaya (Aloe vera) berpotensi sebagai larvasida. Aloe vera mengandung aloin yang berfungsi sebagai penyembuh luka, obat pencahar, antibakteri dan insektisida. Penelitian ini bertujuan untuk mengetahui pengaruh
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Seepersad, Balram, Kelvin Ramnath, Shyam Dyal, and Reeza Mohammed. "The Use of Aniline Blue for the Determination of Dead Phytoplankton, Zooplankton and Meroplankton in LC50 Testings After 96 Hours: A Re-Evaluation of the US Environmental Protection Agency Methodology." In ASME 2002 Engineering Technology Conference on Energy. ASMEDC, 2002. http://dx.doi.org/10.1115/etce2002/ee-29123.

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There is a need for a reliable staining technique to distinguish between live and dead organisms following LC50 tests. This is especially so in cases where organisms can be stressed or even become unconscious and appear dead to the aided or naked eyes. Visual observations under such conditions can result in an LC50 value shifting to the lower concentration thereby imposing stiffer guidelines for compliance. Aniline blue can only stain individuals which are physiologically dead imposing an accurate live-dead evaluation and producing a true LC50 value. Guidelines imposed using such data will fac
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Zhang, Zhen-wen, Jun-zhe Liu, Zhi-min He, and Hai-hua Zhou. "Using sludge ceramic to prepare LC40 lightweight aggregate concrete." In 2010 International Conference on Mechanic Automation and Control Engineering (MACE). IEEE, 2010. http://dx.doi.org/10.1109/mace.2010.5536811.

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Toderas, Ion, Aurelian Gulea, Valentin Gudumac, Elena Roscov, and Olga Garbuz. "Metodă nouă de apreciere a toxicităţii substanţelor chimice." In International symposium ”Functional ecology of animals” dedicated to the 70th anniversary from the birth of academician Ion Toderas. Institute of Zoology, Republic of Moldova, 2019. http://dx.doi.org/10.53937/9789975315975.81.

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We developed a new invention that relates to method for assessing the toxicity of chemical substances.The method of the invention includes the preparation of the culture of Paramecium caudatum, adding to the samples investigated to test chemicals in various concentrations, incubating the sample to be studied and control the addition of colourant 3-amino-7-dimethylamino-2-methylphenazine hydrochloride, incubation with subsequent addition of solution of formalin, centrifuging the sample, removing the supernatant, adding the solution of hydroxide of sodium, determine the absorbance using a spectr
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Al-Jighefee, Hadeel, Roba Abdin, Gheyath Khalid Nasrallah, and Ola Aljamal. "Toxicity Evaluation of Stearamidopropyl Dimethylamine Surfactant on Embryonic development of Zebrafish." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0194.

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Background: Surfactants best known for their use in the industry of detergents, household products, and cosmetics. Usually, the amount of released surfactants into the environment is diluted during secondary water treatment. However, there is always a risk of releasing untreated and polluted wastewater containing high amounts of surfactants without knowing the harmful effect on biotic and abiotic elements of the environment. SAPDMA is a surfactant that is used mostly in cosmetics, conditioning agents, and recently in corrosion inhibition. The classification of SAPDMA as a “safe” or “green” sur
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Tehranifard, A., M. Fazeli, and J. Yarabbi. "Determination of LC50 of Diazinon toxin and linear anionic detergents onRutilus frisii kutum." In WATER POLLUTION 2010. WIT Press, 2010. http://dx.doi.org/10.2495/wp100181.

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Tyczynski, Patrick C., Klisthenis Dimitriadis, and Arthur J. J. Leuterman. "Modification Of The 96-hour LC50 Protocol To Address Site Specific Concerns In Africa." In International Conference on Health, Safety and Environment in Oil and Gas Exploration and Production. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/157571-ms.

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Al-dosari, Aldana, Nadin Younes, and Gheyath Nasrallah. "Ecotoxicological assessment of two surfactant on the emryonic development." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2021. http://dx.doi.org/10.29117/quarfe.2021.0149.

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In this study, zebrafish (Danio rerio) embryos was served as a model for marine fauna to determine if there is any potential of organ-specific toxicity (neuromuscular, hepatic, cytotoxic, and cardiac) caused by Silicone-Q-22 and Ploy-Q-47. as both surfactants are considered eco-friendly corrosion inhibitors. The calculated LC50 of Silicon-Q-22 and Poly-Q-47 was 22.36 and 8.28 mg/L, respectively. At NOEC both surfactants had resulted in teratogenic defects and cardiotoxicity, but only poly Q-47 resulted in neurotoxicity.
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Reports on the topic "LC90"

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จันทร์ตั้งสี, ชิดชัย, สุดาสวรรค์ ลิ้มรักษา та สุชา เฉยศิริ. การประยุกต์ใช้ความหลากหลายทางชีวภาพของซิลิเอตทะเลหน้าดิน จากหาดลูกลม เกาะแสมสาร จังหวัดชลบุรี ในการประเมินความเป็นพิษของโลหะหนักในห้องปฏิบัติการ : รายงานผลการดำเนินงาน. จุฬาลงกรณ์มหาวิทยาลัย, 2015. https://doi.org/10.58837/chula.res.2015.69.

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ในปัจจุบันพบมีการปนเปื้อนของโลหะหนักลงสู่ระบบนิเวศแหล่งน้ำทั้งแหล่งน้ำจืดและน้ำทะเลใน ปริมาณที่เพิ่มสูงขึ้น การปนเปื้อนเหล่านี้นอกจากจะส่งผลให้เกิดความเสื่อมโทรมของแหล่งน้ำแล้ว ยังสร้าง สิ่งแวดล้อมที่เป็นพิษต่อสิ่งมีชีวิตที่อาศัยอยู่ในบริเวณดังกล่าวด้วย มีงานวิจัยหลายชิ้นแสดงให้เห็นถึงผล และความเป็นพิษของโลหะหนักต่อจุลชีพที่ดำรงชีวิตอยู่ในแหล่งน้ำจืด อย่างไรก็ตาม การศึกษาถึง ผลกระทบของการปนเปื้อนของโลหะหนักต่อจุลชีพที่อาศัยอยู่ในทะเลยังมีไม่มากนัก การศึกษาครั้งนี้จึงมีวัตถุประสงค์เพื่อประเมินความเป็นพิษของโลหะหนัก ได้แก่ แคดเมียม นิกเกิล และสังกะสี ต่อซิลิเอต Euplotes quinquecarinatus สายพันธุ
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ศรีไชยรัตน์, สุพัตรา, та จิรศักดิ์ ตั้งตรงไพโรจน์. วินิจฉัยความเป็นพิษของยาฆ่าแมลงชนิดออแกโนฟอสเฟตและคาร์บาเมตในสัตว์น้ำ : รายงานผลโครงการวิจัย. จุฬาลงกรณ์มหาวิทยาลัย, 1998. https://doi.org/10.58837/chula.res.1998.52.

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ทดลองหาค่า LC50 (median lethal concentration) ภายใน 96 ชั่วโมง เพื่อเปรียบเทียบความเป็นพิษเฉียบพลันของสารฆ่าแมลงสองกลุ่ม (กลุ่มออแกนโนฟอสเฟต = เมททิลพาราไธออนและกลุ่มคาร์บาเมต = คาร์บาริล) ในกุ้งกุลาดำและปลากะพงขาว ค่า LC50, 96 ชม. ของเมททิลพาราไธออนในกุ้งกุลาดำและปลากะพงขาวเท่ากับ 54 มค.ก/ลิตร และ 1.48 มก./ลิตร ตามลำดับ และค่า LC 50 ภายใน 96 ชั่วโมงของคาร์บาริลในปลากะพงขาวเท่ากับ 2.95 มก./ลิตร อัตราการตายและความรุนแรงของอาการเป็นพิษของกุ้งกุลาดำและปลากะพงขาวเพิ่มขึ้นตามขนาดความเข้มข้นของสารฆ่าแมลงทั้งสองชนิด จากค่า LC 50 ที่ได้จากการศึกษาครั้งนี้แสดงให้เห็นว่ากุ้งกุลาดำมีความไวจากความเป็นพิษข
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Dashtey, Ahmed, Patrick Mormile, Sandra Pedre, Stephany Valdaliso, and Walter Tang. Prediction of PFOA and PFOS Toxicity through Log P and Number of Carbon with CompTox and Machine Learning Tools. Florida International University, 2024. http://dx.doi.org/10.25148/ceefac.2024.00202400.

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Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) are two major groups of PFAS will be subjected to the Maximal Contamination Concentration (MCL) of 4 ng/l in drinking water to be implemented by the U.S. EPA by 2025. How to accurately predict toxicity of PFAS with varied carbon chain length is important for treatment and sequential removal from drinking water. This study presents Quantitative Structure and Activity Relationship (QSAR) models developed through both linear regression and two order regression. Log P is compiled from reference and carbon content is counted as
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จันทร์ตั้งสี, ชิดชัย, та สกุลทิพย์ นูมหันต์. การประยุกต์ใช้โพรติสต์จากพื้นที่ อพ.สธ. ในการประเมินความเป็นพิษของมลพิษในห้องปฏิบัติการ: กรณีศึกษาของอนุภาคเงินขนาดนาโนเมตร : รายงานผลการดำเนินงาน. คณะวิทยาศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย, 2018. https://doi.org/10.58837/chula.res.2018.57.

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การใช้อนุภาคเงินขนาดนาโนที่เพิ่มขึ้นอย่างรวดเร็วในปัจจุบันอาจนำไปสู่ปัญหาการปนเปื้อนของอนุภาคนี้ลงสู่สิ่งแวดล้อม ก่อให้เกิดผลกระทบในเชิงลบต่อสิ่งมีชีวิตที่อาศัยอยู่ในระบบนิเวศที่ได้รับการปนเปื้อน ถึงแม้ว่าคุณสมบัติในการยับยั้งแบคทีเรียของอนุภาคนี้จะเป็นที่ทราบกันดี ผลกระทบของอนุภาคเงินขนาดนาโนต่อจุลชีพกลุ่มยูแคริโอตเซลล์เดียวกลับพบมีรายงานไม่มากนัก การศึกษาครั้งนี้จึงมีวัตถุประสงค์เพื่อประเมินความเป็นพิษของอนุภาคเงินขนาดนาโนในรูปของสารคอลลอยด์อนุภาคนาโนของโลหะเงินต่อซิลิเอต 3 ชนิด ได้แก่ Bresslauides sp., Paramecium sp. และ Telotrochidium sp. โดยพิจารณาผลของอนุภาคดังกล่าวจากค่าความเข้มข้นที่ทำ
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ปิยะธีรธิติวรกุล, สมเกียรติ, та ศิริรัตน์ เร่งพิพัฒน์. แลกติกแอซิดแบคทีเรียที่ใช้เป็นโพรไบโอติกสำหรับปลากะพงขาว Lates calcarifer : รายงานฉบับสมบูรณ์. ศูนย์เชี่ยวชาญเฉพาะทางด้านเทคโนโลยีชีวภาพทางทะเล ภาควิชาวิทยาศาสตร์ทางทะเล คณะวิทยาศาสตร์ จุฬาลงกรณ์มหาวิทยาลัย, 2005. https://doi.org/10.58837/chula.res.2005.76.

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การแยกแลกติกแอซิดแบคทีเรียจากทางเดินอาหารของปลากะพงขาว เพื่อคัดเลือกแบคทีเรียที่มีสมบัติเป็นโพรไบโอติก ด้วยเทคนิค well agar diffusion ผลพบว่า มี 5 ไอโซเลต (กำหนดให้เป็น LAB-1 - LAB-5) ที่สามารถยับยั้งการเจริญของ Aeromonas hydrophila แบคทีเรียก่อโรคในปลาได้ ผลการวิเคราะห์ปริมาณองค์ประกอบในอาหารผสมแบบเปียก พบว่า ปริมาณสารอาหารต่างๆ ในอาหารมีเพียงพอกับความต้องการของปลากะพงขาว ยกเว้นปริมาณไขมันที่ต่ำเกินไป ความเข้มข้นของ A. hydrophila ที่ทำให้ปลาตาย 50% (LC50) หลังจากที่ปลาได้รับเชื้อแล้ว 72 ชั่วโมง มีค่าเท่ากับ 7.76 log10 เซลล์/มล. และที่ 96 และ 120 ชั่วโมง มีค่าเท่ากับ 7.47 และ 7.26 log10 เซลล์/
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