LED lights
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Recent studies have shown that blue light-emitting diode (LED) light has anti-tumor effects, suggesting the possibility of using visible light in cancer therapy. However, the effects of blue light irradiation on cells in the tumor microenvironment, including tumor-associated macrophages (TAMs), are unknown.
10p vikoch 27-06-2024 2 1 Download
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In this study, ZnO NPs were synthesized as the carrier transporting layer using a solution-mediated process. After that, all solution-multilayer QD-LEDs with a structure of ITO-Glass/PEDOT:PSS/PVK/Green-QDs/ZnO/Al/Encap was fabricated.
10p viohoyo 25-04-2024 3 2 Download
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The light-emitting diodes (LEDs) have emerged as a sustainable illumination solution in the lighting industry. However, the commercial LEDs suffer from low chromatic rendition performance. This work proposes a feasible approach to enhance the quality of commercial LED packages via regulating scattering factors.
5p viohoyo 25-04-2024 4 2 Download
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Ebook "Targeting functional centers of the ribosome" describes research into the mode of function, inhibition, and evolution of the ribosomal catalytic center, the Peptidyl Transferase Center (PTC)--research that has already led to attempts at improving PTC antibiotics. In the second parallel study, the candidate synthesized a ribosomal substructure--one that may represent the minimal entity capable of catalyzing peptide bond formation--shedding light on the origin of the ribosome itself.
85p tachieuhoa 28-01-2024 3 2 Download
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Holy basil (Ocimum tenuiflorum L.) is a herb species used popularly in medicine because it contains many useful bioactive compounds. Multi-spectrum LEDs have been used in crop agriculture bringing many benefits such as increasing crop yield, improving quality of agricultural products, etc.
7p vialfrednobel 21-12-2023 3 2 Download
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In this study, the effects of LED light wavelengths blue and red on both photosynthetic performance and morphology of Gerbera jamesonii plantlets was investigated. The results showed the photosynthesis efficiency via the photo-pigment system and mediated regulation of rubisco activase encoding gene (RCA) mechanism was significantly enhanced by blue light.
11p vimulcahy 18-09-2023 4 3 Download
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This paper is an attempt to survey the benefits of a well-designed photoreactor containing just 6 ultraviolet (UV) high power light emitting diodes (HPLEDs); the power and wavelength of each UV HPLED are 1 W and 365 nm, respectively, the latter being an efficient source for photocatalytic studies.
6p viberbers 09-08-2023 7 3 Download
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Phosphor-converted white light emitting diodes (white LEDs) have received great attention in recent years since they have several excellent features such as high lumen output, low power consumption, long lifetime and environmentally friendly.
5p viberbers 09-08-2023 4 3 Download
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In our paper, we have analyzed the performance of V2LC by using a simplified road model that contains only one way and one lane. Vehicles are installed with two Light Emitting Diodes (LED) headlamps and a photodetector (PD) that are transmitters and a receiver respectively.
5p viannee 02-08-2023 11 4 Download
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In this paper, the authors report a study on number of layers and thickness of InGaN/AlGaN multiple quantum well (MQW) structure based ultraviolet (UV) light emitting diode (LED) heterostructures with emission at the wavelength within the range from 365nm to 385nm, which has been studied by means of SiLENSe software and drift-diffusion transport equations for electron and hole concentrations.
9p vidoctorstrange 06-05-2023 5 3 Download
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This paper presents the research, manufacture of automatic wiper system and experiment on this system on the vehicle. Based on studying the theory of refraction and reflection of light to make a sensor, helping to identify the rain on the windshield surface by using infrared LED.
9p vidoctorstrange 06-05-2023 6 3 Download
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Optically stimulated luminescence (OSL) signals from individual quartz grains are frequently used for equivalent dose and age determination in luminescence dating. Typically, signals from individual grains are stimulated with a focussed solid-state laser and detected via a photomultiplier tube. In contrast to the light-emitting diodes (LEDs) usually used when stimulating multiple-grain aliquots, the laser has a much higher stimulation power density.
10p vironald 15-12-2022 9 4 Download
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Effects of red Y2O3:EU3+ phosphor in silicone lens on the color rendering ability of white led lamps
In this study, a novel compound is synthesized by adding the red Y2O3:Eu3+ dopant to formal phosphor packages, and used as a component in multi-chip white LED lamps (MCW-LEDs). It was found that this solution can enhance the color rendering index (CRI) of MCW-LEDs that have correlated color temperature (CCT) of 8500 K to the value of more than 86.
4p vijaguar 16-11-2022 12 1 Download
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An approach to control and dispatch street lighting systems with new dimming method for led-eye sets
This paper also proposes some more solutions to design and operate LED-eye sets basing on dimming method such as using hybrid power supplies, artificial intelligence and smart lighting zone to create intelligent lighting areas.
7p viirenerosenfeld 02-06-2022 14 3 Download
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The effects of UV-B light force, exposure time and incubation period on producing caffeic acid derivatives and growth parameters in Echinacea purpurea callus and suspension culture were assessed. UV-B led to an increment of all growth parameters and antioxidant activity in callus and cell suspension and caffeic acid derivatives in cell suspension by increasing incubation period.
10p schindler 30-12-2021 10 0 Download
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A series of solution processable, wide band-gap host materials composed of carbazole and tetraphenylsilane groups were designed and synthesized. Their thermal, electrochemical, and photophysical properties were fully investigated. The introduction of bulky tetraphenylsilane and tert-butyl groups around the carbazole led to high glass transition temperatures (Tg) between 120 and 204◦C. The triplet energies (ET) of the synthesized materials were examined by low temperature (77 K) photoluminescence studies and determined as E T > 2.6 for all compounds.
24p langthannam 29-12-2021 7 0 Download
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In this study, red-emitting AlPO4:Cr3+ phosphors have been successfully synthesized by a facile sol-gel method. The Tanabe–Sugano diagram demonstrates that the surrounding sites of Cr3+ ions have a high crystal field with Dq/B=2.47.
10p meyerowitz 25-12-2021 10 0 Download
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CdSe quantum dots are the most studied Cd-based quantum dots with their high quantum yield, high photostability, narrow emission band, and easy synthesis procedure. They are frequently used to develop light emitting diode (LED) due to their unique photophysical properties; however, their narrow emission band causes a challenge to design white LEDs because white light emission requires emission in multiple wavelengths with broad emission bands.
8p tudichquannguyet 29-11-2021 10 1 Download
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Edge detection is used to segment the object by extracting edges and lines of an image. To do this, edge detection applies grayscale thresholds to obtain the edge points of the object. Unreasonably determined thresholds cause an increase in detection error, especially in movement scenario.
7p visteveballmer 06-11-2021 22 0 Download
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Mục tiêu của đề tài nghiên cứu nhằm xác định quang phổ, cường độ và thời gian chiếu sáng đèn LED phù hợp cho sinh trưởng, năng suất cải củ, cải phụng thu non và xà lách trưởng thành trong điều kiện phòng tối; xác định thời gian chiếu sáng bổ sung đèn LED phù hợp cho sinh trưởng, năng suất của cải củ, cải phụng thu non và xà lách trưởng thành trồng nhiều tầng trong điều kiện nhà lưới.
30p ruby000 23-09-2021 34 7 Download