نتایج جستجو برای: phptocatalytic activity
تعداد نتایج: 1134330 فیلتر نتایج به سال:
چکیده بررسی فعالیت ضد اکسیدانی و ضدمیکروبی عصاره گیاه بن سرخ (allium jesdianum) به کوشش: زهرا مقیمی هدف از این تحقیق بررسی میزان ترکیبات فنولی کل، ترکیبات فلاوونوئیدی کل، فعالیت ضداکسیدانی و ضدمیکروبی عصاره ی گیاه تازه و خشک بن سرخ بود. استخراج عصاره به روش های غوطه وری، استفاده از همزن مغناطیسی، دستگاه مایکروویو، امواج فراصوت و گرمادهی مقاومتی و با استفاده از متانول، اتانول و آب به عنوا...
abstract: in a wide search program towards new and efficient antimicrobial agents, a series of 4-substituted-1,2,4-triazolidine-3,5-dione derivatives namely urazoles holding an alkyl moiety at position 4 have been synthesized and tested for their in vitro antibacterial and antifungal activities. the structures of these compounds have been investigated by spectral data. the synthesized compounds...
In this paper, undoped TiO2 and Ag-Nd-codoped TiO2 nanocomposites with different molar ratios of dopants were synthesized by the sol-gel method using starch as a natural additive. Structures were investigated by FT-IR and UV–Vis spectroscopy, SEM, and XRD methods. Moreover, the direct band gap was calculated by Tauc's approach. Furthermore, photocatalytic activity of all s...
a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...
مقدمه: قطع عضو از هر دو اندام تحتانی یکی از عوارض ناشی از جنگ می باشد. در این مطالعه با استفاده از پرسش نامه های (activity of daily living) adl و (instrumental activity of daily living) iadl ، به بررسی فعالیت های روزمره و شخصی جانبازانی که در طول دوره جنگ عراق علیه ایران و پس از آن دچار قطع عضو در هر دو اندام تحتانی شده اند پرداخته ایم. مواد و روش ها: از 576 نفر جانبازی که در طول جنگ ایران و ...
In this paper, undoped TiO2 and Ag-Nd-codoped TiO2 nanocomposites with different molar ratios of dopants were synthesized by the sol-gel method using starch as a natural additive. Structures were investigated by FT-IR and UV–Vis spectroscopy, SEM, and XRD methods. Moreover, the direct band gap was calculated by Tauc's approach. Furthermore, photocatalytic activity of all s...
diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia. the management of the blood glucose level is a critical strategy in the control of diabetes complications. inhibitors of carbohydrate hydrolyzing enzymes have been useful as oral hypoglycemic drugs for the control of hyperglycemia especially in patients with type ii disables mellitus. the goal of the present study...
objective(s): mindium laevigatum is an endemic plant of iran and turkey and is widely used as blood purifier, antiasthma and antidyspnea in traditional medicine. chemical composition of volatile materials of the plant and its antioxidant, antimicrobial and cytotoxic activities were reported in this study. materials and methods: simultaneous distillation-extraction (sde) and gc-mass-fid analysis...
seaweeds have caused an emerging interest in the biomedical area, mainly due to their contents of bioactive substances which show great potential as anti-inflammatory, anti-microbial, anti-viral and anti-tumoral drugs. despite the diversity in quality and quantity of the mediterranean tunisian coast flora, with its large contains of marine organisms and seaweeds, most of them have not yet been ...
the methanolic extracts, infusions, decoctions and hydrosols of six plants were investigated for their total phenolic contents, antioxidant and antimicrobial activities: mentha piperita (peppermint), thymus vulgaris (thyme), melissa officinalis (lemon balm), ocimum basilicum (basil), rosmarinus officinalis (rosemary) and salvia officinalis (sage) (lamiaceae). total phenolic contents w...
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