The main objective of this work is to compare the difference between microwave heating and conventional thermal heating in fabricating carbon/epoxy composites. Two types of epoxy resin systems were used as matrices, LY5052-HY5052 and DGEBA-HY917-DY073. All composite samples were fabricated using resin transfer moulding (RTM) technique. The curing of the LY5052-HY5052-carbon and the DGEBA-HY917-...

A microbiological study was conducted in the area north and northeast of Svalbard, Arctic Ocean. Samples were taken in surface microlayers, ice, water column (down to 300 m) and sediment (maximum depth 3920 m). ATP-content in the upper 100 m was between 8 and 80 ng I-'; total bacterial numbers varied between 0.4 and 4.4 105 ml-l. Ice-samples contained high amounts of ATP (max. 120 ng I-'). Bact...

Using a hexapole technique, a beam of gas phase oriented and state selected NO molecules is directed onto a CO precovered Pt(100) surface. Two quadrupole mass analyzers behind the platinum target record the yield of NO and CO, molecules leaving the surface. The platinum single crystal acts like a catalyst and the CO, reaction signal strongly depends on the initial NO orientation, that is to say...

Introducción. La obesidad severa (OS) ha sido muy poco estudiada en el Perú. Objetivo. Determinar la prevalencia de OS según dos criterios diagnósticos y su relación con factores sociodemográficos riesgo cardiovascular población infantil. Métodos. Se utilizó IMC, definiendo como a un valor ≥ al 95p a: 99p 120% del 95p, respectivamente (n=2001). Para las dislipidemias: hipercolesterolemia 200 mg...

Electrorheology (ER) denotes the control of a material's flow properties (rheology) through an electric field. We have fabricated electrorheological suspensions of coated nanoparticles that show electrically controllable liquid-solid transitions. The solid state can reach a yield strength of 130 kPa, breaking the theoretical upper bound on conventional ER static yield stress that is derived on ...

Infection with porcine epidemic diarrhea virus (PEDV) causes diarrhea, vomiting, and high mortality in suckling pigs. Contaminated feed has been suggested as a vehicle of transmission for PEDV. The objective of this study was to compare thermal and electron beam processing, and the inclusion of feed additives on the inactivation of PEDV in feed. Feed samples were spiked with PEDV and then heate...

The article provides data that the depth of groundwater located at 2-2.5 m above sea level in moderately saline meadow-alluvial soil Bukhara region Republic Uzbekistan, which is applied agriculture immunostimulant contact and triple action - “Zerox” norms (1 2 3 l / t; 1 ha + surfactant 0.15 ha) terms (in pre-sowing treatment seeds, appearance 2-4 true leaves, budding flowering) cotton vegetati...

Organic carbon sequestration and discharge from a deciduous forest catchment in Korea S. J. Kim, J. Kim, and K. Kim Global Environment Laboratory and Department of Atmospheric Sciences, Yonsei University, Seoul 120-749, Korea Forest Water Resources Laboratory, Korea Forest Research Institute, Seoul 130-712, Korea Received: 21 September 2009 – Accepted: 12 October 2009 – Published: 28 October 20...