We report the application of our dc SQUID (superconducting quantum interference device) spectrometer [C. Connor, J. Chang, and A. Pines, Rev. Sci. Instrum. 61, 1059( 1990)] to nuclear quadrupole resonance (NQR) studies of aluminum-27, and boron-II in crystalline and glassy solids. Our results give eqQ /h = 2.38 MHz and 1] = 0.0 for a-A120 3 at 4.2 K. For the natural mineral petalite (LiAISi4 01...

The methyl esters of vegetable oils, known as biodiesel are becoming increasingly popular because of their low environmental impact and potential as a green alternative fuel for diesel engine and they would not require significant modification of existing engine hardware. Methyl ester of Pongamia (PME), Jatropha (JME) and Neem (NME) are derived through transesterification process. Experimental ...

Skyrmions, topologically protected vortex-like nanometric spin textures in magnets, have been attracting increasing attention for emergent electromagnetic responses and possible technological applications for spintronics. In particular, metallic magnets with chiral and cubic/tetragonal crystal structure may have high potential to host skyrmions that can be driven by low electrical current excit...

In the given article, results of tribological research chrome-gray cast iron coupling are presented, friction conditions between cylinder liner and compression segment being lubricated in various environments modeled: diesel (control), pure biodiesel B100 biodiesel-diesel B20 mixture. It was established that average values coefficient coupling, case using biofuels B20, as lubricating material, ...

Yoghurt-like products has been produced from a blend of soybean, coconut and breadfruit extract in the ratio B20:C20:S60, B20:C30:S50, B30:C20:S50 B30:C30:S40 using Lactobacillus acidophilus on substrates. Two sets yoghurt-like these composites was stored at refrigeration (5oC) then ambient temperature (29±2oC) for 4 weeks 5 days, respectively. They were examined changes physicochemical propert...

This paper investigates impact of magnetite dispersed in butanol and added to two varied blends palm biodiesel diesel (B20 B30). The developed fuel samples were characterized tested on single cylinder Yanmar engine (L70N) observe behavior for emissions performance. Results are compared with reference fuels: YF50 contains 50 ppm B20 Bn10Y90 10% 90% B20. Addition depletes levels improve performan...