Xem 1-20 trên 56 kết quả Light emissive
  • Organic light emitting diodes (OLEDs) have attracted enormous attention in the recent years because of their potential for flat panel displays and solid state lighting. This potential lies in the amazing flexibility offered by the synthesis of new organic compounds and by low-cost fabrication techniques, making these devices very promising for the market.

    pdf232p cucdai_1 22-10-2012 40 12   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Thickness-dependent optimization of Er3+ light emission from silicon-rich silicon oxide thin films

    pdf6p sting04 08-02-2012 16 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Synthesis and White-Light Emission of ZnO/HfO2: Eu Nanocables

    pdf6p dauphong15 16-02-2012 14 2   Download

  • Optoelectronics - Advanced Materials and Devices is a second edition following the initial Optoelectronics - Materials and Techniques book published in 2011 as part of the InTech collection of international works on optoelectronics. Optoelectronics, as the discipline devoted to the study and application of electronic devices that emit, detect, and otherwise control light, has widely proliferated globally and enabled many of today's modern conveniences.

    pdf494p phoebe75 19-02-2013 33 17   Download

  • This book describes the state-of-the-art advancement in the field of organic electroluminescence contributed by many researchers with internationally established expertise in the field. It includes original contributions on the synthesis of suitable organic materials, fabrication of organic light emitting devices (OLEDs) and organic white light emitting devices (WOLEDs), characterization of these devices and some designs for optimal performance.

    pdf242p camchuong_1 04-12-2012 32 13   Download

  • Historic gas street lamps in cities like Berlin, Prague and Warsaw can now be upgraded to energy-saving LED technology, thanks to a solid-state retrofit designed by Berlin-based Braun Schaltgeräte & Service with assistance from LED solutions provider Future Lighting Solutions.

    pdf0p narutothief 09-10-2013 30 5   Download

  • The field of photonics is enormously broad, covering everything from light sources to geometric and wave optics to fiber optics. Laser and light source technology is a subset of photonics whose importance is often underestimated. This book focuses on these technologies with a good degree of depth, without attempting to be overly broad and all-inclusive of various photonics concepts. For example, fiber optics is largely omitted in this book except when relevant, such as when fiber amplifiers are examined.

    pdf349p echbuon 02-11-2012 28 3   Download

  • The term environment broadly indicates the surroundings of an individual organism or a community of organisms, ranging on up to the entire biosphere, the zone of Earth that is able to sustain life. By surroundings is meant all the nonliving and living materials that play any role in an organism's existence, from soil and air to what the organism feeds on and the organisms that may feed on it. Any other factors acting on the organism, such as heat and light and gravitation, make up its environment as well. In the case of human beings, cultural factors may also be included in the term....

    pdf80p xuankhuong 11-09-2009 139 56   Download

  • Plants are continuously affected by a variety of environmental factors. Whereas biotic environmental factors are other organisms such as symbionts, parasites, pathogens, herbivores, and competitors, abiotic factors include parameters and resources which determine plant growth like temperature, relative humidity, light, availability of water, mineral nutrients, and CO 2 , as well as wind, ionizing radiation, or pollutants (Schulze et al. 2002 ) . The effect each abiotic factor has on the plant depends on its quantity or intensity.

    pdf532p thienbinh1311 13-12-2012 107 43   Download

  • These research teams study for example the impact and mechanisms of greenhouse gas emissions and atmospheric pollutant on climate, ozone depletion and carbon sinks (oceans and inland waters, forests and soil). They do research to understand the mechanisms and assess the impact of global change on the water cycle, water quality and availability, as well as soil functions and quality to provide the bases for management tools for sustainable water systems. Biodiversity and ecosystems are analysed to understand and minimise the negative impacts of human activities.

    pdf445p yeutinh98 19-09-2012 36 12   Download

  • Đèn chỉ thị 7 đoạn: Đèn chỉ thị 7 đoạn gồm 7 diode phát quang (LED: Light Emission Diode) hay 7 chỉ thị tinh thể lỏng (LCD: Liquid Crystal Display). Mỗi bit được thể hiện bằng một đoạn sáng a, hoặc b, hoặc c... đến g. Có hai loại chỉ thị 7 đoạn: - Anot chung - Catot chung

    pdf7p vetnangcuoitroi123 11-11-2013 85 12   Download

  • When planning how to reduce the threat of global warming and how to adapt to it, a very important piece of information is how intense the change will be. That implies estimating the trends of future concentrations of greenhouse gasses, and the potential future changes in temperature, precipitation, storm events and other climatic variables. These predictions are important not only to estimate the magnitude of the changes, but also to determine the uncertainty surrounding them.

    pdf692p lulaula 25-10-2012 40 7   Download

  • In gravity injection, small volumes of reagents are gravity-fed into injection well(s) over a longer application period. The distribution and dissipation of the reagents in the saturated zone is largely controlled by the site hydrogeologic conditions. The gravity injection approach may reduce some of risks associated with chemical oxidation technologies. Additionally, given its prolonged application period, the oxidants may be able to penetrate into more of the lower permeability soils to address contaminants in these areas.

    pdf222p cao_can 29-12-2012 22 6   Download

  • Fujiki et al. Nanoscale Research Letters 2011, 6:347 http://www.nanoscalereslett.com/content/6/1/347 NANO EXPRESS Open Access STM-induced light emission from thin films of perylene derivatives on the HOPG and Au substrates Aya Fujiki1*, Yusuke Miyake1, Yasushi Oshikane1, Megumi Akai-Kasaya1, Akira Saito1,2 and Yuji Kuwahara1 Abstract We have investigated the emission properties of N,N’-diheptyl-3,4,9,10-perylenetetracarboxylic diimide thin films by the tunneling-electron-induced light emission technique.

    pdf8p dauphong13 09-02-2012 19 5   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: The origin of the red emission in n-ZnO nanotubes/p-GaN white light emitting diodes

    pdf7p sting05 09-02-2012 21 5   Download

  • Scientists and engineers for decades searched to utilize magnesium, known of its low density, for light-weighting in many industrial sectors. This book provides a broad review of recent global developments in theory and practice of modern magnesium alloys. It covers fundamental aspects of alloy strengthening, recrystallization, details of microstructure and a unique role of grain refinement.

    pdf204p cucdai_1 22-10-2012 24 5   Download

  • They were given titles only after a maquette (at leas) had been made. In some cases the work had already been put together as a full-scale mockup or fabricated in steel before its image became clear and it was named. Occasionally titles ...came to me all at once. Moses is an instance of the latter. The parallel uprights suggested the horns in Michelangelo’s Moses.

    pdf0p nhacnenzingme 28-03-2013 28 5   Download

  • Semiconductor lasers are among the most important optoelectronics devices. Remarkable development has been accomplished in the three decades since the first achievement in room-temperature continuous oscillation, which opened the possibility of practical applications of semiconductor lasers. Today, various types of semiconductor lasers are mass-produced and widely used as coherent light sources for a variety of applications, including optical fiber communication systems and optical disk memory systems....

    pdf306p waduroi 03-11-2012 19 4   Download

  • We use a series of computational models to estimate health damages attributable to air pollution from these plants, we compare these damages to estimates of damanges from non- maquiladora industrial polluters, and we use regression analysis to determine whether the poor suffer disproportionately from maquiladora air pollution. Two important caveats are in order. The two maquiladora plants for which we estimate health damages were selected for idiosyncratic reasons, and therefore may not be particularly representative.

    pdf19p doipassword 01-02-2013 17 3   Download

  • We have used a limited data set—comprised of a sector-level emissions inventory and original emissions estimates for a small sample of industrial facilities—to shed light on the links between maquiladoras, air pollution, and human health in Paso del Norte. We found that particulate emissions from maquiladoras undoubtedly have significant impacts on human health—collectively, these plants are probably responsible for dozens of cases of premature mortality and thousands of cases of respiratory disease each year.

    pdf0p doipassword 01-02-2013 23 3   Download

Đồng bộ tài khoản