نتایج جستجو برای: flammability testing

تعداد نتایج: 338280  

2012
Martin E. Alexander Miguel G. Cruz

This paper constitutes a digest and critique of the currently available information pertaining to the influence of live fuel or foliar moisture content (FMC) on the spread rate of crown fires in conifer forests and shrublands. We review and discuss the findings from laboratory experiments and field-based fire behaviour studies. Laboratory experimentation with single needles or leaves and small ...

Journal: :Journal of hazardous materials 2007
Douglas Bohl Gregory Jackson

Pool and vapor cloud characteristics of an acetone spill issuing from the downstream wall of a flow obstruction oriented perpendicular to a uniform flow were investigated experimentally. Data indicate that the spill event was largely governed by the temperature of the surface in relation to the boiling point of the spilled liquid. The free stream velocity (ranging from 0.75 to 3.0m/s) also impa...

2018
Guangmin Zhou Kai Liu Yanchen Fan Mengqi Yuan Bofei Liu Wei Liu Feifei Shi Yayuan Liu Wei Chen Jeffrey Lopez Denys Zhuo Jie Zhao Yuchi Tsao Xuanyi Huang Qianfan Zhang Yi Cui

Lithium-sulfur (Li-S) batteries are regarded as promising next-generation high energy density storage devices for both portable electronics and electric vehicles due to their high energy density, low cost, and environmental friendliness. However, there remain some issues yet to be fully addressed with the main challenges stemming from the ionically insulating nature of sulfur and the dissolutio...

2013
Hossein Najafi

In this research, we established a modified 45 flammability test for cotton blend material to measure the flammability of nanosilicone softener treated-cotton blend material. The wet pick-up was about 150±10%. b) The specimens were tested in the cross direction and nine specimens were measured. The average percent weight loss of the untreated cotton blend nonwoven is only 0.9%. The percent weig...

Journal: :Pediatrics 1977
E McLoughlin N Clarke K Stahl J D Crawford

Review of the records of 678 children with acute injuries referred during an eight-year period to this burn unit indicated that flame burns from a single ignition source (50%) outranked scalds (27%) or house fires (12%) as causes of injury. There was no temporal trend in the rank pattern. The majority of these single-source flame injuries were severe and involved ignition of the child's clothin...

Journal: :Defence Science Journal 2022

Noise is highly associated with adverse effects on health, the human psyche and performance. Current special vehicles do not possess sufficient technologies to suppress transmission of noise or vibration, which typically results in loss control, comfort, driving safety, performance tasks, etc. At same time, reduces attention work efficiency while increasing fatigue, leading hazards, dangerous s...

2017
M. S. Yogendra Kumar T. S. Raghu Pankaj Kumar F. V. Varghese T. M. Kotresh

Flavonoid-rich fraction (FRF) from Seabuckthorn leaves extract was prepared by acid hydrolysis process. Total flavonoid content of Seabuckthorn leaves extract and FRF estimated as rutin equivalent was found to be 116.98±3.06 and 277.14 ± 6.78 mg/g of extract/FRF respectively. Its major constituents myrcetin, quercetin, kaempferol and isorhamnetin, were determined by reverse phase high performan...

2015
Feng Wu Qizhen Zhu Renjie Chen Nan Chen Yan Chen Li Li

Lithium-ion batteries have been attracting much attention which enables the revolution of wireless global communication. Ionic liquids are regarded as promising candidates for lithium-ion battery electrolytes because they can overcome the limitations of high operating temperatures and flammability concerns of traditional electrolytes. However, at low temperatures they suffer from low ionic cond...

2008
Li Qiao Werner J.A. Dahm Gerard M. Faeth Elaine S. Oran

Laminar burning velocities and flammability limits of premixed methane/air flames in the presence of various inert gases including helium, argon, nitrogen and carbon dioxide were investigated by combined use of microgravity experiments and computations. The experiments used a short-drop free-fall laboratory facility that can eliminate the effect of buoyancy on flames and therefore enable accura...

2012
Tomislav Filetin

The basic manufacturing processes of cellular materials have been briefly noted as well as the metal foam properties. The most widely used are the aluminium foams due to the following properties: very good insulation (thermal insulation and sound absorption), low density (mass), high specific rigidity in sandwich structures, very good impact damping, corrosion resistance, non-flammability, very...

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