A practical degradation based method to predict long-term moisture incursion and colour change in high power LEDs [PDF]
, 2018 The effect of relative humidity on LEDs and how the moisture incursion is associated to the color shift is studied. This paper proposes a different approach to describe the lumen degradation of LEDs due to the long-term effects of humidity.
Law, Thong Kok, Lim, Fannon
core +1 more source
CHARACTERIZATION OF NATURAL IRON SAND FROM KATA BEACH, WEST SUMATRA WITH HIGH ENERGY MILLING (HEM)
Jurnal Natural, 2018 Iron sand is one of the natural resources in West Sumatra that has not been optimally utilized. One of the potential locations to get this iron sand deposits is the coast of Kata.
Martha Rianna +8 more
doaj +1 more source
Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A
Advanced Engineering Materials, EarlyView.The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han +5 more
wiley +1 more source
Reliable irogane alloys and niiro patination—further study of production and application to jewelry [PDF]
, 2010 Japanese metalworkers use a wide range of irogane alloys (shakudo, shibuichi), which are colored with a single patination solution (niiro eki). This approach allows different alloys to be combined in one piece and patinated, producing a multi-colored ...
Jones, Alan Hywel, O'Dubhghaill, Coilin
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Nanostructure and paramagnetic centres in diamond-like carbon: Effect of Ar dilution in PECVD process [PDF]
, 2008 Diamond-like carbon (DLC) films were deposited utilising plasma enhanced chemical vapour deposition (PECVD) with acetylene precursor, diluted with 0 – 45% argon.
A.J. Reynolds +28 more
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ИЗУЧЕНИЕ ЛАКОВОГО ИЗДЕЛИЯ ИЗ РАСКОПАННЫХ ХУННУСКИХ КУРГАНОВ В ДОЛИНЕ ТАМИРА, АРХАНГАЙ (Монголия)
Теория и практика археологических исследований, 2019 Империя хунну/сюнну (конец III в. до н.э. - I в. н.э.) контролировала центрально-азиатские регионы Шелкового пути; экономические и культурные отношения с империей Хань подтверждается наличием китайских лакированных изделий в археологических памятниках ...
С. Саран +4 more
doaj +1 more source
Photoswitchable Conductive Metal–Organic Frameworks
Advanced Functional Materials, EarlyView.A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu +5 more
wiley +1 more source
A combination of SEM and EDX studies on a clay-based natural composite with animal fibre and its mechanical implications [PDF]
, 2012 A variety of natural fibres are nowadays being utilized as soil reinforcement. Test results demonstrate the positive effects of adding natural fibres to soils, in that they decrease shrinkage, reduce curing time and enhance compressive, flexural and ...
Bradley, Fiona +2 more
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Study of gunshot residues from Sintox® ammunition containing marking substances
Egyptian Journal of Forensic Sciences, 2015 Two types of factory marked Sintox® ammunition were investigated from the composition of gunshot residue particles (GSR) and occurrence of marking substance points of view.
Júlia Polovková +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal +10 more
wiley +1 more source