نتایج جستجو برای: application of heterogeneous photo

تعداد نتایج: 21222719  

Journal: :International Journal of the Society of Materials Engineering for Resources 2014

Journal: :Applied Catalysis B-environmental 2021

There is growing recognition that cooperative effects exist under dual-mode (photo-thermal) heterogeneous catalytic excitation offer genuine prospects in the transition to a sustainable energy and chemicals economy. Solar beams can act as practical combined source of photons heat (via non-radiative relaxation after optical absorption) lead process intensification. This review provides critical ...

2016
Zhen-Kun Tang Wen-Jin Yin Le Zhang Bo Wen Deng-Yu Zhang Li-Min Liu Woon-Ming Lau

The electronic structures and photocatalytic properties of bismuth oxyhalide bilayers (BiOX1/BiOX2, X1 and X2 are Cl, Br, I) are studied by density functional theory. Briefly, their compositionally tunable bandgaps range from 1.85 to 3.41 eV, suitable for sun-light absorption, and all bilayers have band-alignments good for photocatalytic water-splitting. Among them, heterogeneous BiOBr/BiOI bil...

2015
Jiantie Xu Yonghua Chen Liming Dai

Electric vehicles using lithium-ion battery pack(s) for propulsion have recently attracted a great deal of interest. The large-scale practical application of battery electric vehicles may not be realized unless lithium-ion batteries with self-charging suppliers will be developed. Solar cells offer an attractive option for directly photo-charging lithium-ion batteries. Here we demonstrate the us...

2003
Xiangrong Chen HongJiang Zhang

This paper addresses the problem of photo time-stamp detection and recognition, which is to determine the time a photo was taken. Since the time-stamp is exposed together with the scene, the main challenge comes from complex background and saturation of the time-stamp. An MAP (Maximum a posterior probability) based template matching method is proposed to detect and recognize the time-stamp simu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1393

سنتز سبز نانوذرات فلزی (nps) درسالهای اخیر توجه بسیارزیادی را به خود جلب کرده است. زیرا این پروتوکل کم هزینه وسازگار با محیط زیست از روش های استاندارد سنتز. در این پایان نامه ما گزارش میکنیم یک روش ساده و سازگار با محیط زیست برای سنتز نانوذرات نقره با استفاده از محلول آبی عصاره گیاه allium iranicum به عنوان یک عامل کاهش دهنده ی طبیعی. نانو ذرات نقره مشخص شد با استفاده از تکنیک های uv-visible، x...

2013
Bo Peng Qin Hu Lihua Sun Ying Chen Xinmin Liu Jianrong Li Qi Chang Liwei Wang Jintian Tang

Duchesnea indica (Andr.) Focke has been traditionally used to treat cancer in Asian countries for centuries. In the present study, transplanted U14 cervical cancer mouse model was used to evaluate the antitumor and immunomodulatory activity of Duchesnea phenolic fraction (DPF). ELISA and RIA assay were employed to measured the serum concentration of Th1/Th2 cytokines (IL-2, IL-4, IFN-γ and TNF-...

2012
Sam Zargham Janko Calic David M. Frohlich

With the expansion of digital photographic content stored online and concurrent proliferation of capturing devices, the management and visualization of personal photo collections have become very challenging tasks. In order to gain insight into novel ways of handling and representing large personal photo collections, this paper presents results of a user experience study into novel visualizatio...

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