نتایج جستجو برای: red led

تعداد نتایج: 357390  

2011
Adam K. Fetterman Michael D. Robinson Robert D. Gordon Andrew J. Elliot

A class of metaphors links the experience of anger to perceptions of redness. Whether such metaphors have significant implications for understanding perception is not known. In Experiment 1, anger (versus sadness) concepts were primed and it was found that priming anger concepts led individuals to be more likely to perceive the color red. In Experiment 2, anger states were directly manipulated,...

2016
Matas Janulevicius Paulius Marmokas Martynas Misevicius Julija Grigorjevaite Lina Mikoliunaite Simas Sakirzanovas Arturas Katelnikovas

A good LED phosphor must possess strong enough absorption, high quantum yields, colour purity, and quenching temperatures. Our synthesized Y2Mo4O15:Eu(3+) phosphors possess all of these properties. Excitation of these materials with near-UV or blue radiation yields bright red emission and the colour coordinates are relatively stable upon temperature increase. Furthermore, samples doped with 50%...

2010
Miroslava Smolinská Petra Olejníková Daniela Hudecová Gabriel Čík

Photodynamic therapy (PDT) is a method that combines the use of nontoxic components, namely photosensitizer, light and oxygen to cause localised oxidative photo-induced damage. The aim of this study was to contribute to PDT development by studying an alternative light sources using red light-emitting diode (LED) light and evaluated its effect on the photodynamic activity of methylene blue (MB) ...

Journal: :علوم باغبانی ایران 0
مریم موسوی فتاح دانشجوی سابق کارشناسی ارشد، دانشگاه بوعلی سینا، همدان حسن ساری خانی دانشیار، دانشگاه بوعلی سینا، همدان

this research was aimed to investgate the effect of light quality on micropropagation of pear rootstock oh×f333. first, single nodes explants were cultured in modified ql medium containing ba at four levels (0, 0.5, 1, and 2 mg/l-1) and iaa at three levels (0, 0.1, and 1 mg/l-1) and were evaluated for shoot proliferation. then, plantlets subcultured in modified ql medium containing 1 mg/l-1 ba ...

2010
Yiting Zhu Nadarajah Narendran

The most common phosphor in white LEDs is YAG:Ce; however, low radiant energy produced by this phosphor in the long wavelength (red) portion of the spectrum results in low color rendering (CRI) values, making the white LEDs less acceptable for general illumination. Mixing a suitable red phosphor with YAG:Ce improves CRI. Past studies have shown that when more than one phosphor is used in a conv...

2017
Rongfang Wang Xingming Wei Liqin Qin Zhihui Luo Chunjie Liang Guohang Tan

Thioglycolic acid-capped CdTe x S(1 - x) quantum dots (QDs) were synthesized through a one-step approach in an aqueous medium. The CdTe x S(1 - x) QDs played the role of a color conversion center. The structural and luminescent properties of the obtained CdTe x S(1 - x) QDs were investigated. The fabricated red light-emitting hybrid device with the CdTe x S(1 - x) QDs as the phosphor and a blue...

2010
Hiroki Iwanaga

The paper proposes novel molecular designs for rare-earth complexes involving the introduction of two different phosphine oxide structures into one rare-earth ion. These designs are effective for improving solubility and emission intensity. Additionally, the complexes are indispensable for realizing high performances in LEDs and security media. The thermodynamic properties of Eu(III) complexes ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه محقق اردبیلی - دانشکده فنی 1392

مدیریت فعال صف یکی از عناصر اساسی در طراحی مکانیزم های کنترل ازدحام در شبکه می باشد که در جهت بهره وری مناسب تر شبکه به کار گرفته می شود. الگوریتم red مهمترین الگوریتم مدیریت فعال صفی است که در مسیریاب های اینترنت پیاده سازی شده است و نقش اساسی در کارایی اینترنت دارد. نقطه ضعف اساسی red حساسیت شدید آن به تنظیم پارامترها و نوسانات طول صف آن می باشد که سبب پایین آمدن کارایی این الگوریتم می شود. د...

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