نتایج جستجو برای: led

تعداد نتایج: 211461  

2012
GOH TEIK BENG

UV cured epoxy systems represent complementary technology to the established heat cured epoxy systems for coating, adhesion and encapsulation of electronic devices. The UV cured epoxy systems offer significant benefits in terms of fast cure and thus very short production cycle time; low stress and better colour due to room temperature cure; process wise no mix ratio problem or anhydride handlin...

2014
Jisoo Kim Jiewen Sun Pierre Karashchuk Baihong Jin

FlexPRET [9] is a processor platform for mixedcriticality systems, which can provide accurate timing control guarantees at the architecture level. In this course project, we utilize FlexPRET as a Real-time Unit (RTU) and build a realtime LED music visualizer that can drive seven LED strips and output audio signal synchronously.

Journal: :Displays 2008
Linas Svilainis

LED PWM dimming application for large scale LED video displays is analyzed. The need for short light pulse duration is outlined. PWM dimming with short driving pulses is investigated experimentally. The LED response time skew introduces the nonlinearity for PWM dimming. For LED response time skew estimation, a method is suggested that has been successfully applied to measure some of today’s mar...

2008
Ivan Moreno Joseph M. Howard

The remarkable properties of light-emitting diodes (LEDs) make them ideal sources for many applications ranging from indicator lights, optical communication systems, and displays to solid-state lighting. In this paper a radiometric approach to realistically model the intensity spatial distribution of encapsulated LEDs is presented. We provide an analytical relationship between the radiated patt...

Journal: :IACR Cryptology ePrint Archive 2015
Ivica Nikolic Lei Wang Shuang Wu

In this paper we present known-plaintext single-key and chosenkey attacks on round-reduced LED-64 and LED-128. We show that with an application of the recently proposed slidex attacks [7], one immediately improves the complexity of the previous single-key 4-step attack on LED-128. Further, we explore the possibility of multicollisions and show single-key attacks on 6 steps of LED-128. A general...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1394

هدف اصلی این رساله کاربرد کاتالیزگر نوری tio2-p25 در انجام تبدیلات کاهشی و اکسایشی تحت تابش نور مریی می باشد. فصل اول به معرفی اجمالی نیمه رسانا و کاتالیزگر نوری تیتانیا و اهمیت واکنش های کاتالیز شده ی نوری از نظر مسأله ی انرژی و شیمی سبز پرداخته شده است. به عنوان کار اول این پایان نامه، تهیه تک ظرف ترکیبات بنزایمیدازول از اورتو-نیترو آنیلین و الکل توسط نورکاتالیزگر تیتانیا دگوسا تحت تابش نور...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده شیمی 1388

بدلیل ارزش اقتصادی بالا و کاربردهای صنعتی زیاد طلا اندازه گیری آن از اهمیت بالایی برخوردار است. اکثر تکنیک های به کار رفته برای اندازه گیری طلا وقت گیر و هزینه بر می باشند. در کار پژوهشی حاضر، اندازه گیری طلا با استفاده از اپتود مبتنی بر تثبیت 5-(4-دی متیل آمینو بنزیلیدن) رودانین (pdr) به عنوان عامل حس کننده بر روی غشا تری استات سلولز مورد بررسی قرار گرفت. اندازه گیری سیگنالها با استفاده از دو ...

2010
Xiaohui Zhao Samuil Angelov Paul W. P. J. Grefen

• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version ...

  Background: Reproductive health problems affect youths in all countries. There is an urgent need to enhance youths reproductive health services to provide a healthy life for this group. In this regard, the present study aimed to evaluate the Reproductive Health Peer Education Program based on the opinion of university students.   Methods :This interventional study was conducted in Qazvin Univ...

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