نتایج جستجو برای: nano nitrogen

تعداد نتایج: 168578  

Journal: :International Journal of Enviornment and Climate Change 2023

Nitrogen fertilizers play an important role in the cultivation of crops, excessive and improper usage cause severe issues with respect to human environment. It is essential go for alternative sources nitrogen like nano slow controlled release nitrogen.An experiment was conducted at Agriculture Research Farm, Lovely Professional University, Phagwara, during kharif 2022 by using source maize crop...

خیری منجیلی, حمیدرضا, دانافر, حسین, شرفی, علی, عطاری, الهه,

Background and Objective: Curcumin is a polyphenolic anti-cancer and anti-inflammatory agent and can be used both orally and by injection. In this study, nanoparticles of silica mesopore- gold nano were synthesized as a new drug delivery system. For this aim, gold nanoparticles as a promising system for effective drug delivery of curcumin was used and nano gold were delivered to breast cancer c...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1390

طراحی و سنتز پلیمر های کئوردینانسیونی متخلخل یا چارچوب های فلز- آلی به علت ساختارهای جالب این ترکیبات و قابلیت های کاربردی آنها برای ذخیره و جداسازی گاز، کاتالیز، تشخیص و جداسازی انانتیومرها، خواص مغناطیسی، تنظیم لومینسانس و غیره توجه زیادی را به خود جلب کرده است. اخیرا مشخص شده است که برخی لیگاندهای آلی مسطح صلب مثل ایمیدازول-5،4-دی کربوکسیلیک اسید (h3idc) برای تشکیل چارچوب های فلز- آلی مناسب ...

In this study, the effects of nitrogen addition on the production of ultrafine/nano grained AISI 201L stainless steel by advanced thermo-mechanical process were investigated. Cast samples were first homogenized at 1200 °C for 4 h, hot-rolled at 1100 °C and finally, solution-annealed at 1150 °C for 2.5 h. Unidirectional and cross multipass cold rolling at 25 °C was carried out to 90% reduction i...

2011
C Z Zhao M Werner S Taylor P R Chalker A C Jones Chun Zhao

La-doped zirconia films, deposited by ALD at 300°C, were found to be amorphous with dielectric constants (k-values) up to 19. A tetragonal or cubic phase was induced by post-deposition annealing (PDA) at 900°C in both nitrogen and air. Higher k-values (~32) were measured following PDA in air, but not after PDA in nitrogen. However, a significant dielectric relaxation was observed in the air-ann...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1388

در این رساله، طراحی، اجراء و مدلسازی فرآیند nano-edm مورد بررسی و تحقیق قرار گرفت. به منظور تولید نانو- ابزار مناسب برای فرآیند nano-edm یک دستگاه اتوماتیک طراحی و ساخته شد که با استفاده از آن، تاثیر متغیرهای فرآیند ساخت بر خصوصیات نانو- ابزار مورد تحقیق قرار گرفت. با شناسایی سطوح بهینه متغیرهای فرآیند ساخت به روش تاگوچی، نانو- ابزارهایی با شعاع نوک حدود 10 نانومتر و ضریب جانبی (نسبت طول به شعا...

Journal: :Journal of agricultural and food chemistry 2008
Bárbara Ribeiro Paula B Andrade Paula Baptista Lillian Barros Isabel C F R Ferreira Rosa M Seabra Patrícia Valentão

The aim of this work was to find the most useful inorganic nitrogen source to enable Leucopaxillus giganteus to become a more nutritious mushroom, regarding organic acid and phenolic composition and total alkaloids content. For these, the influence of NH 4NO 3,NaNO 2, KNO 3,, and (NH 4) 2HPO 4 on the organic acid production was determined by HPLC-UV and total alkaloid content was assessed by a ...

Journal: :Entropy 2013
Chun-Huei Tsau Yu-Hsin Chang

The pure elements Ti, Zr, Cr, Nb were selected to produce an TiCrZrNb alloy target and deposited thin films thereof by a reactive high vacuum DC sputtering process. Nitrogen was used as the reactive gas to deposit the nitride thin films. The effect of nitriding on the properties of the TiCrZrNbNx film was tested by changing the nitrogen ratio of the atmosphere. All of the as-deposited TiCrZrNbN...

2016
Oriol Gonzalez Sergio Roso Xavier Vilanova Eduard Llobet

We report on the use of combined heating and pulsed UV light activation of indium oxide gas sensors for enhancing their performance in the detection of nitrogen dioxide in air. Indium oxide nano-octahedra were synthesized at high temperature (900 °C) via vapour-phase transport and screen-printed onto alumina transducers that comprised interdigitated electrodes and a heating resistor. Compared t...

Journal: :پژوهش های زراعی ایران 0
سمیه خوش پیک رضا صدرآبادی حقیقی احمد احمدیان

introduction since discovery of food, clothing and shelter, human wanted to improve their physical sufferings, and using experience separated toxic plants from non – toxic ones and medicinal herbs from non – medicine. medicinal herbs are agricultural products which have a very important role in the health of people in society. among the medicinal herbs, fennel with scientific name (foeniculum v...

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