نتایج جستجو برای: barrier efficiency

تعداد نتایج: 474823  

2013
Bo Zhao Zisheng Su Wenlian Li Bei Chu Fangming Jin Xingwu Yan Tianyou Zhang Feng Zhang Di Fan Yuan Gao Junbo Wang Huachun Pi Jianzhuo Zhu

We demonstrate high-efficient white organic light-emitting diodes (WOLEDs) based on triplet multiple quantum well (MQW) structure and focus on the influence on WOLEDs through employing different potential barrier materials to form type-I and type-II MQWs, respectively. It is found that type-I MQW structure WOLEDs based on 1,3,5-tris(N-phenyl-benzimidazol-2-yl)benzene as potential barrier layer ...

2017
Chunjing Hao Zehua Xiao Di Xu Chengbo Zhang Jian Qiu Kefu Liu

Textile dyes are some of the most refractory organic compounds in the environment due to their complex and various structure. An integrated resin adsorption/Dielectric Barrier Discharge (DBD) plasma regeneration was proposed to treat the indigo carmine solution. It is the first time to report ectopic regeneration of the saturated resins by non-thermal Dielectric Barrier Discharge. The adsorptio...

Journal: :Frontiers in veterinary science 2015
Kelsy Robinson Zhuo Deng Yongqing Hou Guolong Zhang

Intestinal barrier function is achieved primarily through regulating the synthesis of mucins and tight junction (TJ) proteins, which are critical for maintaining optimal gut health and animal performance. An aberrant expression of TJ proteins results in increased paracellular permeability, leading to intestinal and systemic disorders. As an essential component of innate immunity, host defense p...

Journal: :جنگل و فرآورده های چوب 0
مهدی روحانی استادیار علوم و صنایع چوب و کاغذ، گروه سلولزی و بسته بندی، پژوهشکدۀ شیمی و پتروشیمی، پژوهشگاه استاندارد، کرج، ایران بهزاد کرد استادیار علوم و صنایع چوب و کاغذ، گروه سلولزی و بسته بندی، پژوهشکدۀ شیمی و پتروشیمی، پژوهشگاه استاندارد، کرج، ایران نازنین مطیع دانشجوی دکتری علوم و صنایع چوب و کاغذ، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران فرحناز بهزادی کارشناس ارشد علوم و صنایع چوب و کاغذ، گروه سلولزی و بسته بندی، پژوهشکدۀ شیمی و پتروشیمی، پژوهشگاه استاندارد، کرج، ایران

the aim of this study was to investigate the barrier properties of cellulose nanocrystals-pvananocomposites. nanocomposite films with different filler loading levels (3, 6, 9 and 12% by wt) weredeveloped by solvent casting method. the effect of cellulose nanocrystals on the barrier properties ofthe nanocomposites was studied. to this end, moisture absorption, water vapor permeability (wvp),oxyg...

Journal: :Journal of the American Chemical Society 2012
Yuan Yang Guangyuan Zheng Sumohan Misra Johanna Nelson Michael F Toney Yi Cui

Li(2)S is a high-capacity cathode material for lithium metal-free rechargeable batteries. It has a theoretical capacity of 1166 mAh/g, which is nearly 1 order of magnitude higher than traditional metal oxides/phosphates cathodes. However, Li(2)S is usually considered to be electrochemically inactive due to its high electronic resistivity and low lithium-ion diffusivity. In this paper, we discov...

2015
Ding Wang Youxi Lin Dmitry Donetsky Gregory Belenky Stefan P. Svensson Wendy L. Sarney Harry Hier

Bulk unrelaxed InAsSb alloys with Sb compositions up to 44% and layer thicknesses up to 3 um were grown by molecular beam epitaxy. The alloys showed photoluminescence (PL) energies as low as 0.12 eV at T=13K. The electroluminescence and quantum efficiency data demonstrated with unoptimized barrier heterostructures at T=80 and 150K suggested large absorption coefficient and carrier lifetimes suf...

Journal: :Macromolecular rapid communications 2011
Yeon Seok Kim Javed H Niazi Yun Ju Chae U-Ri Ko Man Bock Gu

Small, organic, toxic compounds are not well eliminated by water-treatment systems and eventually become concentrated in the human body. In this study, liposomes are employed to house aptamers with their own binding buffer. When small, organic, toxic compounds in water pass through a liposome barrier, only the target molecules are captured by the DNA aptamers inside the liposomes. The capture e...

2013
Frank A. Wolak

this paper identifies the major political and economic constraints that impact the demand-side of electricity industry re-structuring processes. These constraints have been a major barrier to implementing effective restructuring processes in many countries, particularly those in the developing world. The paper describes how these constraints have been addressed and how this has harmed market ef...

Journal: :Future Internet 2017
Il-Gu Lee

Abstract: The wireless local area network (WLAN) is one of the most popular wireless technologies offering connectivity today, and one of the candidates for the internet of things (IoTs). However, WLAN’s inefficiency in terms of complexity and relatively large power consumption compared with other wireless standards has been reported as a major barrier for IoTs applications. This paper proposes...

2009
A. Bhattacharyya T. D. Moustakas Lin Zhou David. J. Smith W. Hug

We report the development of Al0.7Ga0.3N /AlN quantum wells with high internal quantum efficiency. All samples had identical well and barrier thickness but the III/V flux ratio was varied during growth by increasing the Ga flux. The luminescence spectra show single peaks which vary from 220 nm III /V 1 to 250 nm III /V 1 with internal quantum efficiency varying from 5% to 50%, respectively. To ...

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