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Light-emitting diodes

Tìm thấy 18+ kết quả cho từ khóa "Light-emitting diodes"

Synthesis and waterproofness improvement of K3AlF6:Mn4+ phosphor for warm white light emitting diodes

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https://doi.org/10.1039/C4TC02062F.. xMn 2+ Phosphors with Different Charge Compensators for Warm White Light Emitting Diodes, Opt. https://doi.org/10.1364/OE.20.021656.. Liu, Advances in Phosphors for Light-emitting Diodes, J. https://doi.org/10.1021/jz2002452.. https://doi.org/10.1039/C6DT01230B.. 2652-2671, https://doi.org/10.1039/C8TC00251G.. Chen, Highly Efficient Non-rare-earth Red Emitting Phosphor for Warm White Light-emitting Diodes, Nat.. 4312, https://doi.org/10.1038/ncomms5312..

Silver nanowire/PEDOT:PSS hybrid electrode for flexible organic lightemitting diodes

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Lee, Extremely efficient flexible organic light-emitting diodes with modified graphene anode, Nat. Park, Electrical annealing for flexible organic light- emitting diodes having poly(3,4-ethylenedioxythiophene):poly(styrene sul- fonate) anodes, J

Luminescence properties of Mn4+-doped CaAl2 O4 as a red emitting phosphor for white LEDs

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The Mn 4+ -doped CaAl 2 O 4 phosphors with potential for integration as blend phosphors excited at either near UV and/or blue LED chips point out a desirable potential application as components in warm white light-emitting diodes.. Wiechert VUV spectroscopy of luminescent materials for plasma display panels and Xe discharge lamps", Journal of Luminescence, 93(3), pp.179-189..

Deep sequencing identification of miRNAs in pigeon ovaries illuminated with monochromatic light

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In this study, Illumina high-throughput sequencing was used to identify miRNAs involved in regulating pigeon follicular develop- ment under exposure to different monochromatic light-emitting diodes (LEDs). Nine female birds (three per group) of similar body weight (mean weight = 557.02 g) and similar physio- logical period (i.e., the day after the second egg was laid) were anesthetised with sodium pentobarbital at a dosage of 2.5 mg/100 g body weight.

Application of fluorescence technique in studying dental caries

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Using light-emitting diodes operating in the near ultraviolet (UVA) spectral regions for excitation, the obtained fluorescence images and spectra of carious teeth were different from sound teeth spectra due to the presence of bacteria Streptococcus mutans producing metabolites called porphyrins.

Nguyên tắc cơ bản của lượng tử ánh sáng P16

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16.1 LIGHT-EMITTING DIODES Ạ Injection Electroluminescence B. 16.2 SEMICONDUCTOR LASER AMPLIFIERS Ạ Gain. 16.3 SEMICONDUCTOR INJECTION LASERS Ạ Amplification, Feedback, and Oscillation B. 16.0-l(b)] or, with appropri-. 16.1), the semiconductor laser amplifier (Sec. 16.2), and the semiconductor injection laser (Sec.. 16.1 LIGHT-EMll-lING DIODES Ạ Injection Electroluminescence. 16.1B. (16.1-8a). (16.1-8b). (16.1-9b). (16.1-11) Spectral Width (Hz). (16.1-10) Peak Frequency. (16.1-12). (16.1-14).

Vi điều khiển 8051 cho người mới bắt đầu

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Không giống như Diode, LED (Light-emitting diodes) khi phát sáng sẽ gây ra sụt áp trên nó vào khoảng 1.7 – 2.5V (tuỳ màu LED), và dòng định mức qua nó khoảng 20mA.. lượng lớn, hoặc LED sẽ cháy.. Ở cách thứ 3, đây là cách tốt nhất, có trở hạn dòng. Trở được tính như sao cho sụt áp trên nó là 2.5V, sụt áp trên chân TTL là 0.9V. Với LED 2.2V, 1.9V sẽ rơi trên trở do đó trở 220Ohm sẽ hạn dòng còn 8.6mA (1.9/220). Với LED 1.7V, 2.4V sẽ rơi trên trở, dòng lúc này là 10.9mA(2.4/220)..

Nhân nhanh giống dâu tây Newzeland từ đốt thân bằng kỹ thuật nuôi cấy mô

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Effect of light-emitting diodes on growth and morphogenesis of upland cotton (Gossypium hirsutum L.) plantlets in vitro. Nghiên cứu sản xuất mứt từ quả Dâu tây Đà Lạt. cv.”Jimba”) nuôi cấy in vitro. Cải tiến hệ thống nhân giống cây dâu tây bằng nuôi cấy mô trong túi nylon. Bước đầu nhân giống cây dâu tây New Zealand (Fragaria ananassa L.) từ hạt.

Application of fluorescence technique in studying facial skin

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In this paper, using light-emitting diodes operating in the near ultraviolet spectral regions (UVA), fluorescence imaging and spectroscopy techniques were. The normal skin and comedones emitted the red fluorescence, while inflamed skin emitted the blue one. The fluorescence spectra were measured for determining the origination of facial red fluorescence..

nguon quang

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1.Các vấn đề cơ bản của Vật lý Bán dẫnCác dải năng lượngVật liệu nguyên chất& Vật liệu ngoại laiCác tiếp giáp pn2.Light-Emitting Diodes3.Laser Diodes GIỚI THIỆU TỔNG QUAN Thiết bị phát quang có chứcnăng biến đổi tín hiệu điệnthành tín hiệu quang và phát tínhiệu quang vào sợi quang đểthực hiện truyền dẫn thông tin.Thành phần chủ yếu là nguồnphát quang, có 2 loại:Điốt phát quang LEDLight-emitting diodeĐiốt laze bán dẫn LDLaser Diode CÁC DẢI NĂNG LƯỢNG Electron tồn tại ở cácmức năng lượngriêng biệt

Coumarin-based benzilmonohydrazone as a new proton-sensitive fluorescence dye: Synthesis and investigation of photophysical and acidochromic properties

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Coumarins that are substituted at the 7-position with a diethylamino group are especially well known for their applications in chemosensor chemistry, laser dyes, fluorescent markers for amino acids, anions/cations, organic light-emitting diodes, and sensitizers in DSSCs as chromogenic and fluorochromogenic chromophores [13–17]..

Investigation of photocatalytic and antimicrobial activities of BaWO4-MoS2 nanoflowers

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As one of the most receptive soluble alkaline earth tungstates, BaWO 4 based materials assume a signi fi cant job in a wide assortment of mechanical application as light-emitting diodes [10], humidity sensors [11], optic fi lters [12], scintillator detectors [13], pho- tocatalysts [14], microwave dielectrics [15], phosphors [16] and solid-state lasers [17].. Regardless of the way that BaWO 4 is an outstanding photocatalyst, it has two signi fi cant issues. https://doi.org/10.1016/j.jsamd .

Encyclopedia of Global Resources part 149

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Gallium Gallium, in the form of gallium arsenide and gallium nitride, is used mainly in electronic components, followed by its use in integrated circuits, laser diodes, light-emitting diodes, photodetectors, solar cells, research and development, and specialty alloys. Primary producers are China, Germany, Kazakhstan, and Ukraine, followed by Hungary, Japan, Russia, and Slovakia. The United States also produces refined gallium..

In-vitro antibacterial, antioxidant and cytotoxic potential of gold nanoparticles synthesized using novel Elaeocarpus ganitrus seeds extract

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Due to this, Au is a symbolic material which is used in the fi eld of light-emitting diodes, bio- sensors, diluted and ferromagnetic materials for spintronic solar cells, photo-catalysis, transistors and which also acts as an anti- oxidant and anti-bacterial agent [13].. Herein, we report the synthesis of gold nanoparticles using biomaterial Elaeocarpus ganitrus seeds extract under the hydrothermal synthesis method.

NHÂN GING IN VITRO CÂY CHUI (CAVENDISH SP.) TRÊN QUY MÔ CÔNG NGHIP

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Growth of banana plantlets cultured in vitro under red and blue light- emitting diode (LED) irradiation source. 4 BÁO CÁO KHOA HỌC – HỘI NGHỊ CÔNG NGHỆ SINH HỌC TOÀN QUỐC NĂM 2009 CÔNG NGHỆ SINH HỌC PHỤC VỤ NÔNG – LÂM NGHIỆP, THUỶ SẢN, CÔNG NGHIỆP, Y-DƯỢC VÀ BẢO VỆ MỘI TRƯỜNG Thái nguyên, ngày 26-27 tháng 11 năm 2009, tr. Light-emitting diodes as an effective lighting source for in vitro banana culture. Juss.) bằng nuôi cấy mô. Tạp chí Sinh học .

Lập trình đồ họa trong C (phần 2)

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Optical touch panels employ a line of infrared light-emitting diodes (LEDs) along one vertical edge and along one horizontal edge of the frame. beams that are interrupted idenhfy the horizontal and vertical coordinates of the screen position selected. Figure 2-55 illustrates the arrangement of LEDs in an optical touch panel that is designed to match the color and contours of the system to which it is to be fitted..

He nhung

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Sử dụng External AC-DC Adapter  Sử dụng IC LM317, LM1117 63 Embedded System HungPN-HUST 2.2.2. 64 Embedded System HungPN-HUST Ghép nối Relay  Điều khiển đóng cắt Rơ -le 73 Nguyên lý hoạt động Cấu tạo Rơ -le Ví dụ Schematic Embedded System HungPN-HUST Ghép nối LED  LED = Light-Emitting Diodes  Nguyên lý: 74 Embedded System HungPN-HUST Ghép nối LED  M{u sắc v{ cường độ s|ng 75 COLOR TYPE TYPICAL CURRENT ID (MA) MAXIMAL CURRENT IF (MA) VOLTAGE DROP UD (V) Infrared Red Standard 20 30 1.7 Red Super

Fiber Optics Illustrated Dictionary - Part 40

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FSO transmission links were pioneered in the early 1970s by groups such as Bell Laboratories, who re- searched lasers and light-emitting diodes (LEDs) for FSO communications. Interest in FSO links increased in the late 1990s, with companies such as Global Crossing and Lucent Technologies testing new sys- tems. FreeBSD A Unix computer operating system de- scended from Berkeley Standard Distribution (BSD), that flourished with the development of the ARPA- NET, the forerunner to the Internet.

Nghiên cứu ảnh hưởng của hệ thống chiếu sáng đơn sắc đến quá trình nhân giống in vitro cây hoa chuông (Sinningia speciosa)

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Responses of strawberry plantlets cultured in vitro under superbright red and blue light emitting diodes (LEDs). in vitro growth of Cymbidium plantlets cultured under superbright red and blue light - emitting diodes. Effect of light wavelength on in vitro organogenesis of a cattleya hybrid. EFFECTS OF LIGHT EMITTING DIODES SYSTEM ON THE IN VITRO MULTIPLICATION OF GLOXINIA (Sinningia speciosa).

INFRARED’ LIGHT-EMITTING DIODE APPLICATION

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To drive an LED with a continuous modulation sig- nal, it is necessary to operate the LED in the linear region of the light-emitting characteristics. In the ar- rangement of Figure 10, a fixed bias (I F1 ) is applied to the LED using R 1 and R 2 so that the maximum ampli- tude of the modulation signal voltage (V IN ) lies within the linear portion of the LED characteristics.