The Certification of the Mass Fractions of Stilbenes in Bovine Urine - Certified Reference Materials ERM®-BB386 and ERM®-BB389

This report describes the preparation of the pork meat matrix reference materials ERM BB386 and ERM-BB389 and the certification of the content (mass fraction) of three stilbenes. The preparation and processing of the material, homogeneity and stability studies, and the characterisation are described hereafter and the results are discussed. Uncertainties were calculated in compliance with the ISO/IEC Guide 98-3 Guide to the Expression of Uncertainty in Measurement (GUM) [1] and include uncertainties due to possible heterogeneity, instability, and characterisation.JRC.D.2-Standards for Innovation and sustainable Developmen

Investigation of a low density plasma utilizing laser light scattering.

Measurement of plasma density and temperature was attempted using the technique of scattering laser light from the plasma and comparing the magnitudes of the scattered and input intensities. Although no significant results were obtained, a scattered signal was apparently obtained using a giant pulse laser. Both PIN photodiodes and photomultiplier tubes were used as detectors, and comparison showed the photomultipliers were more suitable. The most important results were modification of the laser to operate with a Pockels cell in a "Q"-switched mode, improvement of the optical alignment system, and use of a light trap to eliminate internal reflected signals.http://archive.org/details/investigationofl00koebLieutenant Commander, United States NavyApproved for public release; distribution is unlimited

Quaestiones nonnullae tenotomicae : dissertatio inauguralis

http://tartu.ester.ee/record=b2286723~S1*es

Certification of the crude Protein, Fat, Lactose and Ash Content of whole Milk Powder and the crude Protein and Fat Content of Skim Milk Powder, BCR-380R & BCR-685

This report describes the preparation of two milk powder reference materials and the measurement exercises that led to the certification of the content (mass fraction) of the crude protein (Kjeldahl-N x 6.38), fat, lactose and ash in whole milk powder (BCR-380R) and crude protein (Kjeldahl-N x 6.38) and fat in skim milk powder (BCR-685).JRC.D.2-Reference material

Intra-laboratory assessment of a method for the detection of TiO2 nanoparticles present in sunscreens based on multi-detector asymmetrical flow field-flow fractionation

In this study, an intra-laboratory assessment was carried out to establish the effectiveness of a method for the detection of TiO2 engineered nanoparticles (ENPs) present in sunscreen containing nano-scale TiO2 and a higher nanometer-range (approx. 200-500 nm) Ti02, as well as iron oxide particles. Three replicate measurements were performed on five separate days to generate the measurement uncertainties associated with the quantitative asymmetrical flow field-flow fractionation (AF4) measurement of the hydrodynamic radius r(h, mode1) (MALS), rh,,odei (ICP-MS), r(h, mode2) (ICP-MS), and calculated mass-based particle size distribution (d(10), d(50), d(90)). The validation study demonstrates that the analysis of TiO2 ENPs present in sunscreen by AF4 separation-multi detection produces quantitative data (mass-based particle size distribution) after applying the sample preparation method developed within the NanoDefine project with uncertainties based on the precision (u(IP)) of 3.9-8.8%. This method can, therefore, be considered as the method with a good precision. Finally, the bias data shows that the trueness of the method (u(t) = 5.5-52%) can only be taken as a proxy due to the lack of a sunscreen standard containing certified TiO2 ENPs

Efficient free-space read-out of WGM lasers using circular micromirrors

Lasing from whispering-gallery mode (WGM) resonators occurs omnidirectional in azimuthal plane. Most applications of WGM resonators require spectral analysis with off-chip detectors, where in-plane emission and beam divergence hinder efficient detection. We demonstrate redirecting WGM laser emission from all azimuthal angles using a circular micromirror placed around the cavity. By collecting reflections off the micromirror via free-space optics, read-out intensity improved by one order of magnitude. Blocking vertically emitted spontaneous emission and recording reflections off the micromirror only, signal-to-noise ratio improved from 4.6 dB to 15 dB. Our read-out concept may be applied to arbitrary WGM cavity geometries without deteriorating the cavity`s quality factor

Ultra-short silicon-organic hybrid (SOH) modulator for bidirectional polarization-independent operation

We propose a bidirectional, polarization-independent, recirculating IQ-modulator scheme based on the silicon-organic hybrid (SOH) platform. We demonstrate the viability of the concept by using an SOH Mach-Zehnder modulator, operated at 10 GBd BPSK and 2ASK-2PSK

Silicon-Organic Hybrid (SOH) and Plasmonic-Organic Hybrid (POH) integration

Silicon-organic hybrid (SOH) and plasmonic-organic hybrid (POH) integration combines organic clectro-optic materials with silicon photonic and plasmonic waveguides, The concept enables fast and power-efficient modulators that support advanced modulation formats such as QPSK and 16QAM

Silicon-Organic Hybrid (SOH) and Plasmonic-Organic Hybrid (POH) integration

Silicon photonics offers tremendous potential for inexpensive high-yield photonic-electronic integration. Besides conventional dielectric waveguides, plasmonic structures can also be efficiently realized on the silicon photonic platform, reducing device footprint by more than an order of magnitude. However, nei-ther silicon nor metals exhibit appreciable second-order optical nonlinearities, thereby making efficient electro-optic modulators challenging to realize. These deficiencies can be overcome by the concepts of silicon-organic hybrid (SOH) and plasmonic-organic hybrid integration, which combine SOI waveguides and plasmonic nanostructures with organic electro-optic cladding materials