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Wyszukujesz frazę "cypermethrin" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Immunological and genotoxic effects of occupational exposure to α-cypermethrin pesticide
Autorzy:
El Okda, El-Sayed
Abdel-Hamid, Mona A.
Hamdy, Ahmed M.
Powiązania:
https://bibliotekanauki.pl/articles/2161902.pdf
Data publikacji:
2017-06-19
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
p53
pyrethroids
immunological
genotoxic
cypermethrin
Oxidative stress
Opis:
Objectives The aim of this work has been to find out the occupational oxidative stress, immunological and genotoxic health hazards among α-cypermethrin (CYP) pesticide-exposed workers. Material and Methods A cross-sectional study was performed including 200 workers divided into 3 groups according to the level of exposure: highly exposed group (50 workers), moderately exposed group (50 workers) and unexposed group (100 workers). All workers were subjected to detailed laboratory investigation for gene P53 mutations, immunological parameters as a cluster of differentiation into 3 percentage (CD3%), CD4% and CD8% in addition to peripheral blood total leukocytic and platelet counts that were measured. Spectrophotometer technique was used for detection of superoxide dismutase (SOD), catalase (CAT), glutathione (GSH) and glutathione peroxidase (GPx). Air samples were collected with a High Volume Small Surface Sampler for measurement of α-cypermethrin level. Results A highly exposed group to the α-cypermethrin had lower CD4/CD8 as compared to an unexposed group with statistically significant difference. As regards gene mutation, exons 5a and 6 were more frequent among the highly exposed group as compared to no mutation among moderately exposed and unexposed groups with significant difference. As regards antioxidants; SOD, CAT, GSH and GPx were higher among the unexposed group as compared to the highly and moderately exposed group with statistically significant difference. Significant negative correlation was found between working years and antioxidant parameters. Conclusions Repeated exposure to α-CYP may lead to gene mutations, immunological disturbances and oxidative stress. Strict safety precautions are required not only for workers but also for public users. Int J Occup Med Environ Health 2017;30(4):603–615
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2017, 30, 4; 603-615
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Different approach to determination of pyrethroid pesticides in ornamental plants
Autorzy:
Zięba, Katarzyna
Miśkowiec, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/1076626.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
HPLC
QuEChERS
Rosa hybrid
cypermethrin
deltamethrin
rose petals
Opis:
The aim of the presented research was to develop and optimize a methodology, particularly dedicated for the quantification of pyrethroids in ornamental plant material on the basis of a rose (Rosa hybrid) with the use of HPLC chromatography and QuEChERS extraction method. High repeatability and reproducibility of the results were obtained by using acetonitrile as an eluent. The determined limits of detection and quantification for deltamethrin equal 5.2 ng and 9.3 ng per 1 cm3 of analysed solution respectively. For cypermethrin these values were: LOD 1.2 ng, LOQ 5.0 ng per 1 cm3 of solution. It has been shown that solutions of deltamethrin and cypermethrin are of high stability – they can be stored at room temperature for as long as 28 days without a change in the concentration. The experiments presented showed that the QuEChERS extraction of deltamethrin from the tested samples can be performed with efficiency above 93% using acetonitrile as a solvent, magnesium sulphate and sodium acetate as the separation salts. For purification Supel ™ QUE sorbent by Supelco was successfully applied. The described analytical method may be a valuable and relatively cheap tool to control the amounts of these pesticides sprayed in environment, wherever there is a suspicion of their excessive use.
Źródło:
World News of Natural Sciences; 2019, 27; 96-107
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy of plant leaf extracts against mustard aphid Lipaphis erysimi (Kalt.) under field condition
Autorzy:
Pal, Manish Kumar
Kafle, Kapil
Powiązania:
https://bibliotekanauki.pl/articles/1166855.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cypermethrin
Efficacy
Lipaphis erysimi
Mustard aphid
Plant extracts and Rapeseed
Opis:
The bio-efficacy of five plant leaf extracts were tested in Morang-2 variety of Rapeseed against Mustard aphid (Lipaphis erysimi Kalt.) during November to March, 2016/17 at research field of Institute of Agriculture and Animal Science (IAAS), Lamjung Campus, Lamjung, Nepal. The plant leaf extracts were prepared by decomposing chopped leaves of Neem, Bakaino, Hattibar, Khirro, and Bojho in cow urine for one month period. Total five extracts were prepared, one by mixing all the leaf while remaining four extracts were prepared excluding one ingredient in each mixture but keeping Tobacco and Bojho in all five extracts. The experiment was laid out in Randomized Completely Block Design using five botanical extracts, chemical (Cypermethrin 10% EC) and control which were replicated thrice. The Rapeseed plant was sprayed with prepared extracts at 30 days after sowing (DAS), 45 DAS and 60 DAS and aphid number counted after 5, 10 and 15 days of each spray from 10 cm apical shoot. The greatest reduction of aphid population was found in chemical followed by complete mixture treated plots but their reduction was not statistically different. While control and plant extracts of without Neem treated plots had resulted less reduction in the number of aphid. Grain yield was also found highest (1436.75 kg/ha) in complete mixture treated plots indicating complete mixture of plant extracts might be the best alternative for aphid management in Rapeseed. It is concluded that all the plant extracts showed insecticidal properties against aphid in rapeseed crop and successfully be integrated, as a part of Integrated Pest Management.
Źródło:
World Scientific News; 2018, 105; 29-39
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Toxicity and combined action of some insecticides and clove oil against Rhyzopertha dominica in wheat grain
Autorzy:
Hamza, A.
Powiązania:
https://bibliotekanauki.pl/articles/65102.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lesser grain borer
Rhyzopertha dominica
Coleoptera
Bostrychidae
plant pest
wheat
grain
toxicity
combined action
insecticide
clove oil
clove
Syzygium aromaticum
alpha-cypermethrin
lambda-cyhalothrin
malathion
Opis:
Concerns about food quality and environmental protection have led to the search for effective and safe insect control measures. This study was carried out to evaluate the efficacy of some insecticides (malathion, alpha-cypermethrin, lambda-cyhalothrin) and clove oil, alone and in combinations, to protect wheat grain against Rhyzopertha dominica. Adult mortality, progeny emergence and weight loss of treated grain were examined. The results revealed that the tested insecticides and clove oil alone showed high efficiency to R. dominica with respect to mortality, progeny of the adults and weight loss of wheat grain. The mixing of lambda-cyhalothrin and clove oil with the most effective insecticide (alphacypermethrin) enhanced its efficacy to R. dominica. It was more efficient against R. dominica than when used alone with respect to mortality and progeny of the adults. However, mixing alpha-cypermethrin with malathion reduced the efficacy of alpha-cypermethrin against R. dominica with respect to mortality and progeny of the adults. Combinations of alpha-cypermethrin and clove oil reduced wheat grain loss more than using them alone. Mixing lambda-cyhalothrin and clove oil with low concentrations of alpha-cypermethrin improved its efficacy against R. dominica and therefore may reduce environmental pollution, lower risks to human health, and delay insect resistance development.
Źródło:
Journal of Plant Protection Research; 2018, 58, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trinet P jako innowacyjna metoda ochrony drzewostanów świerkowych przed kornikiem drukarzem
Trinet P as an innovative method in the protection of Norway spruce stands against Ips typographus (L.)
Autorzy:
Grodzki, W.
Skrzecz, I.
Powiązania:
https://bibliotekanauki.pl/articles/987108.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany swierkowe
swierk pospolity
Picea abies
ochrona lasu
ochrona przed szkodnikami
kornik drukarz
Ips typographus
pulapki feromonowe
alfa-cypermetryna
pulapki Trinet P
bark beetles
picea abies
forest protection
pheromone trap
alpha−cypermethrin
Opis:
The lack of effective methods of forest protection against bark beetles in Norway spruce stands was the reason for undertaking the studies aimed at the assessment of efficacy of pheromone traps Trinet P that act as an ‘attract and kill' system to reduce the population of spruce bark beetle Ips typographus (Col.: Curculionidae: Scolytinae). The Trinet P trap consists of a triangular stand, on which the net containing alpha−cypermethrin is stretched. Each trap is baited by the synthetic pheromone attracting I. typographus beetles, which fly towards the trap and die due to the contact with the net coated with insecticide. The experiments were conducted in 2011−2012 on 6 experimental plots located in 26−82−years−old Norway spruce stands in Beskid Sądecki Mts. (southern Poland) that were threatened with the bark beetles. The experimental plot consisted of 100 m long stand edge exposed to bark beetle attack, with set of 5 traps installed in line. Similar stand edges without traps were used as control. The experiments were assumed before the I. typographus swarming, i.e. at the turn of April and May of each year. The treatment efficacy was estimated after 5 months by counting infested trees on plots with treatment and control variants. In the most cases the protective effect expressed by significantly lower number of infested trees on the edges with Trinet P traps. The symptoms of infestation by I. typographus were found up to 20% of trees in the stands protected with the Trinet P traps, while more than 80% of trees were attacked by the spruce bark beetle on the control plots. Despite these differences, the infestation density of trees in the stands protected and unprotected with traps was similar. No effect on non−target organisms was observed. The effectiveness of Trinet P traps is similar as of commonly used pheromone traps, thus this novel device can be used for the protection of Norway spruce stands against I. typographus.
Źródło:
Sylwan; 2017, 161, 01; 34-39
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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