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  1. Article ; Online: An investigation of Ca-doped MgO nanoparticles for the improved catalytic degradation of thiamethoxam pesticide subjected to visible light irradiation

    Huma Khalid / Atta ul Haq / Ameer Fawad Zahoor / Ali Irfan / Magdi E. A. Zaki

    Scientific Reports, Vol 14, Iss 1, Pp 1-

    2024  Volume 12

    Abstract: Abstract The remediation of pesticides from the environment is one of the most important technology nowadays. Herein, magnesium oxide (MgO) nanoparticles and calcium-doped magnesium oxide (Ca-doped MgO) nanoparticles were synthesized by the co- ... ...

    Abstract Abstract The remediation of pesticides from the environment is one of the most important technology nowadays. Herein, magnesium oxide (MgO) nanoparticles and calcium-doped magnesium oxide (Ca-doped MgO) nanoparticles were synthesized by the co-precipitation method and were used for the degradation of thiamethoxam pesticide in aqueous media. Characterization of the MgO and Ca-doped MgO nanoparticles were performed by XRD, SEM, EDX, and FT-IR analysis to verify the synthesis and variations in chemical composition. The band gap energy and crystalline size of MgO and Ca-doped MgO nanoparticles were found to be 4.8 and 4.7 eV and 33 and 34 nm respectively. The degradation of thiamethoxam was accomplished regarding the impact of catalyst dosage, contact time, temperature, pH, and initial pesticide concentration. The pH study indicates that degradation of thiamethoxam depends on pH and maximum degradation (66%) was obtained at pH 5 using MgO nanoparticles. In contrast, maximum degradation (80%) of thiamethoxam was observed at pH 8 employing Ca-doped MgO nanoparticles. The percentage degradation of thiamethoxam was initially increasing but decreased at higher doses of the catalysts. The degradation of the pesticide was observed to be increased with an increase in contact time while high at room temperature but decreased with a temperature rise. The effect of the initial concertation of pesticide indicates that degradation of pesticide increases at low concentrations but declines at higher concentrations. This research study reveals that doping of MgO nanoparticles with calcium enhanced the degradation of thiamethoxam pesticide in aqueous media.
    Keywords Medicine ; R ; Science ; Q
    Subject code 620
    Language English
    Publishing date 2024-01-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Role of stress in progression of Migraine

    Shamoon Noushad / Sadaf Ahmed / Huma Khalid / Rida Nasir / Ikram Tunio / Shaikh Tahir

    International Journal of Endorsing Health Science Research, Vol 2, Iss 2, Pp 67-

    2014  Volume 71

    Abstract: The mental and physiological stresses can be an important trigger of migraines & headaches. These strains act to enhance the progression of migraine that could be psychological, physiological stress, Environmental stress or Chemical stress. The ... ...

    Abstract The mental and physiological stresses can be an important trigger of migraines & headaches. These strains act to enhance the progression of migraine that could be psychological, physiological stress, Environmental stress or Chemical stress. The population data of 185 people have taken which include the ages from 14-60 years. The data were analyzed by ICHD-II criteria .The duration of the research was from-February 2012 to December 2012.The targeted population were of both genders age ranges 18-25 years. The data have collected in two parts, before examination and during examination. The obtain result shows that the frequency of migraine is higher in women as compare to men. Mostly people were suffering from mild psychological stress that might be periodical stress as approximately 50% people were students who were under examination stress as the exams were about to held. Nutritional stress is another major factor as the high temperature causes dehydration resulted in vasoconstriction resulted in sensation of pain. Environmental stress was an additional cause for students. Physiological stress was also noticed as the main cause that bring about the initiation of migraines period whether it could also leads towards the Menstrual migraine that has a sign of vomiting or nausea. Individual concerns with healthy life patterns and stress free conditions could help a person to reduce or prevent the migraine.
    Keywords migraine ; physiological stress ; psychological stress ; environmental stress ; headache ; Medicine ; R
    Subject code 150
    Language English
    Publishing date 2014-12-01T00:00:00Z
    Publisher Advance Educational Institute & Research Centre
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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