Print ISSN: 1812-125X

Online ISSN: 2664-2530

Main Subjects : Entomology

Determination of the Residues of the Insecticide Lambda-cyhalothrin After Heat Treatment Using HPLC and Biological Evaluation

Laith Osama Al-Ramadany; Nabeel Mustafa Al-Mallah

Journal of Education and Science, 2021, Volume 30, Issue 4, Pages 161-176
DOI: 10.33899/edusj.2021.130469.1166

The present study was conducted with the aim of evaluating the effect of using three temperatures of 30, 40, and 50 °C and five exposure periods of 6, 12, 24, 48 and 96 hours/degree of temperature in reducing the residues of Lambda-cyhalothrin in water under laboratory conditions and measuring these residues using HPLC as well as Biological evaluation of these residues before and after thermal treatments. The HPLC readings of the residues of this pesticide showed that the highest general average of the degradation rate was at the concentration of 30 ppm / active substance (93.47%) and at the temperature at 30 °C (94.79%), while it was only for the exposure period. 48 hours significant effect (89.80%), and the percentage of deterioration in the effectiveness of the pesticide against adults of the insect T.confusum ranged between 96.72 and 99.22%, and the highest of these percentages was at a concentration of 10 ppm (99.22%) and at a temperature of 40 °C (98.33%). for the exposure periods 24 and 48 hours (98.29%). This may indicate the sensitivity of this pesticide to the temperatures used, which seemed to be high in its initial limit, while the highest rate of degradation was 89.08% at the 48-hour period, which differed significantly from The rest of the other averages, which reached 82.2, 85.26, 89.35 and 86.95% for exposure periods of 6, 12, 24 and 96 hours, respectively.

Comprehensive study of head lice infestation in Mosul primary schools (right and left side)

Khalida Abdulla Sulaiman; Aulfat Tahseen Yaseen; Zena Zakarya Edrees

Journal of Education and Science, 2020, Volume 29, Issue 1, Pages 163-173
DOI: 10.33899/edusj.2019.125926.1010

The current study of head lice Pediculus humanus capiti, was conducted in 11 primary schools for girls in different social and economic areas of the city of Mosul on its right and left sides for the period from 15 October 2018 to 15 February 2019. The present study showed that the total incidence of head lice in the 5 schools covered by the right city was 27.44% while the total injury rate in the 6 schools covered by the left city side was 11.13%, the highest percentage of girls with long hair was recorded in the first Zubaidah school on the left side and reached 75% , and Al- Bashair school in the right side where it reached 83.33%, while the highest percentage of girls with short hair in the school of Genin in the left side at 75% and on the right side Al-Sajideen and Al-Shaheed Salem schools as the proportion with short hair in which 33.5 and 33.33% respectively. As for the educational level of mothers of infected girls, the highest rate of infection for mothers of non-educated mothers in the school of Al-Jahafil on the left side of the city, reaching 100%, while the school Al-Bashair recorded 96% on the right side of the city. In addition, the percentage of casualties according to the number of family members was the highest rate of injury to families with fewer than 5 members of the school in Al-Foratain school on the left side of the city with 65%