Diagnostic Ability of Magnifying Blue Light Imaging with a Light Emitting Diode Light Source for Early Gastric Cancer: A Prospective Comparative Study

ABSTRACTIn this study, bacteria Gram-positive Staphylococcus aureus is exposed to a blue LED light source (light-emitting diode) to determine the appropriate energy to kill the exposure-caused bacteria. The longest exposure times are 1200, 1800, 2400, 3000 seconds, and power 28.098, 56.561, 74.882, and 96.369 MW. The number of bacterial colonies incubated by TPC (total plate number) at 37 degrees 24-48 hours while the plant is alive. Determine the correct energy caused by exposure to the blue LED lamp, therefore, perform mold analysis, non-compliance, and quantitative energy analysis. These results show that the death of streptococcus skin is generally affected by high energy. From this study, we found that 74,882 MW of energy and 179,716.8 MJ of bacteria per 2,400 seconds were the best energy week.Keywords: Staphylococcus epidermidis, a blue LED, exposure time, the power of exposure, CFU

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Enhanced Visibility in Evaluating Gastric Cancer and Helicobacter pylori-Associated Gastritis Using Linked Color Imaging with a Light-Emitting Diode Light Source

Digestive Diseases and Sciences ◽

10.1007/s10620-021-07234-5 ◽

2021 ◽

Author(s):

Tsugitaka Ishida ◽

Osamu Dohi ◽

Naohisa Yoshida ◽

Takeshi Yasuda ◽

Takuma Yoshida ◽

...

Keyword(s):

Gastric Cancer ◽

Helicobacter Pylori ◽

Light Source ◽

Light Emitting Diode ◽

Color Imaging ◽

Light Emitting ◽

Linked Color Imaging

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Early gastric cancer diagnostic ability of ultrathin endoscope loaded with laser light source

World Journal of Gastroenterology ◽

10.3748/wjg.v25.i11.1378 ◽

2019 ◽

Vol 25 (11) ◽

pp. 1378-1386 ◽

Cited By ~ 6

Author(s):

Takuto Suzuki ◽

Yoshiyasu Kitagawa ◽

Rino Nankinzan ◽

Taketo Yamaguchi

Keyword(s):

Gastric Cancer ◽

Early Gastric Cancer ◽

Light Source ◽

Laser Light ◽

Diagnostic Ability ◽

Cancer Diagnostic ◽

Laser Light Source

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Silicon-Based Blue Light Emitting Diode

10.21236/ada282382 ◽

1993 ◽

Author(s):

SPIRE CORP BEDFORD MA

Keyword(s):

Blue Light ◽

Light Emitting Diode ◽

Light Emitting ◽

Silicon Based

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Comparison of the effects of operating microscopes with light emitting diode and halogen light source on the eye: a rabbit study

Cutaneous and Ocular Toxicology ◽

10.1080/15569527.2021.1949337 ◽

2021 ◽

pp. 1-7

Author(s):

Bahri Aydın ◽

Armagan Ozgur ◽

Huseyin Baran Ozdemir ◽

Pınar Uyar Gocun ◽

Mehmet Arda Inan ◽

...

Keyword(s):

Light Source ◽

Light Emitting Diode ◽

Light Emitting ◽

Halogen Light ◽

Halogen Light Source

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Influences of Spectral Power Distribution on Circadian Energy, Visual Comfort and Work Performance

Sustainability ◽

10.3390/su13094852 ◽

2021 ◽

Vol 13 (9) ◽

pp. 4852

Author(s):

Jack Ngarambe ◽

Inhan Kim ◽

Geun Young Yun

Keyword(s):

Light Source ◽

Power Distribution ◽

Work Performance ◽

Spectral Power ◽

Light Emitting Diode ◽

Essential Element ◽

Visual Comfort ◽

Light Emitting ◽

Organic Light Emitting Diode ◽

Spectral Power Distribution

Spectral power distribution (SPD) is an essential element that has considerable implications on circadian energy and the perception of lit environments. The present study assessed the potential influences of SPD on energy consumption (i.e., considering circadian energy), visual comfort, work performance and mood. Two lighting conditions based on light-emitting diode (LED) and organic light-emitting diode (OLED) were used as proxies for SPDs of different spectral content: dominant peak wavelength of 455 nm (LED) and 618 nm (OLED). Using measured photometric values, the circadian light (CL), melatonin suppression (MS), and circadian efficacy (CE) of the two lighting sources were estimated via a circadian-phototransduction model and compared. Additionally, twenty-six participants were asked to evaluate the said lit environments subjectively in terms of visual comfort and self-reported work performance. Regarding circadian lighting and the associated energy implications, the LED light source induced higher biological actions with relatively less energy than the OLED light source. For visual comfort, OLED lighting-based conditions were preferred to LED lighting-based conditions, while the opposite was true when considering work performance and mood. The current study adds to the on-going debate regarding human-centric lighting, particularly considering the role of SPD in energy-efficient and circadian lighting practices.

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Optimal Color Lighting for Scanning Images of Flat Panel Display using Simplex Search

Journal of Imaging ◽

10.3390/jimaging4110133 ◽

2018 ◽

Vol 4 (11) ◽

pp. 133

Author(s):

HyungTae Kim ◽

EungJoo Ha ◽

KyungChan Jin ◽

ByungWook Kim

Keyword(s):

Image Quality ◽

Light Source ◽

Light Emitting Diode ◽

Optical Filters ◽

Flat Panel Display ◽

Flat Panel ◽

Light Emitting ◽

Simplex Search ◽

Inspection Systems ◽

Color Control

A system for inspecting flat panel displays (FPDs) acquires scanning images using multiline charge-coupled device (CCD) cameras and industrial machine vision. Optical filters are currently installed in front of these inspection systems to obtain high-quality images. However, the combination of optical filters required is determined manually and by using empirical methods; this is referred to as passive color control. In this study, active color control is proposed for inspecting FPDs. This inspection scheme requires the scanning of images, which is achieved using a mixed color light source and a mixing algorithm. The light source utilizes high-power light emitting diodes (LEDs) of multiple colors and a communication port to dim their level. Mixed light illuminates an active-matrix organic light-emitting diode (AMOLED) panel after passing through a beam expander and after being shaped into a line beam. The image quality is then evaluated using the Tenenbaum gradient after intensity calibration of the scanning images. The dimming levels are determined using the simplex search method which maximizes the image quality. The color of the light was varied after every scan of an AMOLED panel, and the variation was iterated until the image quality approached a local maximization. The number of scans performed was less than 225, while the number of dimming level combinations was 20484. The proposed method can reduce manual tasks in setting-up inspection machines, and hence is useful for the inspection machines in FPD processes.

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