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Item Open Access ENT Safety Cart(2561) พรทิวา ราษอาสา; นุชชญา กุลจารุอมร; สุทธินี ทองทิพย์; นุชนภางค์ มโนเรือง; วีระวัฒน์ รูปแก้ว; อรณี กลิ่นศรีสุข; มหาวิทยาลัยมหิดล. คณะแพทยศาสตร์ศิริราชพยาบาลเพื่อใส่ท่อช่วยหายใจหรือขณะคีบสิ่งแปลกปลอมให้กับผู้ป่วยในช่วงวิกฤตหรือเร่งรีบ มักเกิดปัญหาสาย light cable หลุดออกจากการ light source (เครื่องกำเนิดแสง) จากหลายสาเหตุ เช่น ความสูงของโต๊ะไม่พอดี, สาย light cable ตึงเกินไปเกิดสายเลื่อนหลุดขณะใช้งาน หรือ... light source ตกหล่นจากการดึงรั้ง ซึ่งเครื่องกำเนิดแสงเป็นอุปกรณ์ราคาแพง มีการใช้งานทุกวัน ใน 1 เคส ต้องใช้ 2-3 เครื่อง และเมื่อเกิดชำรุด เสียหายต้องใช้เวลาในการส่งซ่อมนาน อุปกรณ์ไม่เพียงพอต่อการใช้งาน จึงได้คิดประดิษฐ์นวัตกรรม ENT SAFETY CART ขึ้นเพื่อPublication Metadata only Using students' misconceptions of primary coloured lights to design a hands-on coloured light mixer(2009-01-01) Suchai Nopparatjamjomras; Ratchapak Chitaree; Mahidol UniversityA surface mount typed multi-coloured Light-Emitting Diode (LED) is used as a light source for the hands-on coloured light mixer. The LED consists of red, green and blue tiny sources but the mixer is designed to have four switches corresponding... microcontroller placed between four input switches and the LED operates both a red and green tiny sources. In addition, the microcontroller is employed to eliminate some combinations of coloured light mixing to simplify the experiment (basic mode) for non advancedPublication Metadata only Modeling the effects of light sources on the growth of algae(2019-12-01) Sutamas Satthong; Kritsana Saego; Pongpatai Kitrungloadjanaporn; Narin Nuttavut; Somkid Amornsamankul; Wannapong Triampo; South Carolina Commission on Higher Education; Thailand Ministry of Education; Mahidol University. To have more insight into how light affects their growth, we investigate the effect of light sources (fluorescent and LED) on algae growth both experimentally and computationally via modeling. It was found that growth in the fluorescent light source...© 2019, The Author(s). Algae are fast growing microorganisms and beneficial in many ways, especially concerning food supplement, alternative energy, and wastewater treatment. Naturally, they need a light:dark regime for productive photosynthesisItem Metadata only Protecting Fiber-Optic Quantum Key Distribution Sources against Light-Injection Attacks(2022-10-01) Ponosova A.; Ruzhitskaya D.; Chaiwongkhot P.; Egorov V.; Makarov V.; Huang A.; Mahidol UniversityA well-protected and characterized source in a quantum key distribution system is needed for its security. Unfortunately, the source is vulnerable to light-injection attacks, such as Trojan-horse, laser-seeding, and laser-damage attacks, in which... an eavesdropper actively injects bright light to hack the source unit. The hacking laser could be a high-power one that can modify properties of components via the laser-damage attack and also further help the Trojan-horse and other light-injection attacks. HerePublication Metadata only A simple apparatus for demonstrating how light rays emanate from a point source(2009-04-01) Kreetha Kaewkhong; Narumon Emarat; Kwan Arayathanitkul; Alex Mazzolini; Mahidol University; Swinburne University of TechnologyA point source of light sends out light rays in all directions and in straight lines. This is an important concept for all students who study elementary optics at the high school level. Most physics textbooks discuss this topic only briefly.1-6... still have considerable misunderstanding about this concept.8-F14 This paper describes an effective but inexpensive (approximately $20 U.S.) apparatus to illustrate the behavior of light rays emitted isotropically from a point source of lightPublication Metadata only Using students misconceptions of primary coloured lights to design a hands-on coloured light mixer(2009-01-01) Suchai Nopparatjamjomras; Ratchapak Chitaree; Mahidol University© 2009 SPIE. A surface mount typed multi-coloured Light-Emitting Diode (LED) is used as a light source for the hands-on coloured light mixer. The LED consists of red, green and blue tiny sources but the mixer is designed to have four switches..., a microcontroller placed between four input switches and the LED operates both a red and green tiny sources. In addition, the microcontroller is employed to eliminate some combinations of coloured light mixing to simplify the experiment (basic modePublication Metadata only High power deep UV-LEDs for analytical optical instrumentation(2018-02-01) Yan Li; Miloš Dvořák; Pavel N. Nesterenko; Nantana Nuchtavorn; Mirek Macka; Institute of Analytical Chemistry of the Czech Academy of Sciences; University of Tasmania; Brno University of Technology; Mahidol University© 2017 Optical detection systems for portable analytical instrument require commercially available, miniaturized, robust and well performing light sources. Light emitting diodes (LEDs) have been extensively used in portable analytical devices... as they are exceptionally stable light sources offering a number of advantages over traditional light sources including robustness, small size and low-cost. In the analytically more significant deep UV spectral range, LEDs suffer from low optical power and parasiticPublication Metadata only Roles of cyclic AMP in regulation of phototaxis in chlamydomonas reinhardtii(2009-10-01) Maskiet Boonyareth; Jureepan Saranak; Darawan Pinthong; Yupin Sanvarinda; Kenneth W. Foster; Mahidol University; Thailand Ministry of Public Health; Syracuse UniversityChlamydomonas reinhardtii swims toward or away from light (phototaxis) in a graded way depending on various conditions. Activation of rhodopsin provides signals to control the steering of this unicellular organism relative to a light source... swimming toward a light source and sustained elevation following rhodopsin activation increases rhodopsin biosynthesis. © 2009 Versita Warsaw and Springer-Verlag Berlin Heidelberg.Publication Metadata only An activity sheet for teaching double-slit interference(2018-12-19) A. Jiwalak; N. Emarat; K. Arayathanitkul; Mahidol University; Commission on Higher Educationthe light wave coming out of the source. Each strip is pinned at the point source and can be rotated around the pinned point. The results from the test indicate that most students realized the importance of the path difference after they had learnt... to the introductory physics class at Mahidol University in academic year 2016. The activity sheet contains a diagram of the double slit with two transparent strips. The sinusoidal wave pattern together with a ray of light printed on the strip was used to representItem Metadata only A machine learning for transcutaneous bilirubinometer(Mahidol University. Mahidol University Library and Knowledge Center, 2024) Nichar Khemtongcharoen; Songpol Ongwattanakul; Chamras PromptmasMachine Learning (ML) engine, the bilirubin concentration can be accurately predicted. The proposed bilirubinometer prototype consists of four main parts: light source, fiber probe, light spectrometer, and an Artificial Neural Network (ANN...) that are specially engineered for the bilirubinometer construction. The light spectrometer and light source are controlled by a microcontroller platform called Raspberry Pi. In the data collection phase, the bilirubinometer prototype was used to measure the light