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Sorting, shredding and smelting scrap
The global economy of e-waste recycling has received much attention in recent waste studies literature. This article gives an account from the inside of two different sites within a leading high-tech recycling and smelting company in which such e-waste ...
Stefan Laser
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Dispersion-managed Monolithic All Polarization-Maintaining Ultrafast Thulium-doped Fiber Oscillator [PDF]
We report on our first results of a dispersion-managed monolithic polarization-maintaining ultrafast Thulium-doped fiber oscillator. The design incorporates only commercially available polarization-maintaining components and emits linearly polarized ...
Schuhbauer Benedikt+4 more
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Comparative study on pump wavelength dependent efficiency in Nd:YVO4 [PDF]
The influence of the pump wavelength on the heat load and efficiency of Nd:YVO4 crystals is investigated with a specially designed crystal mount.
Schneewind Merle+4 more
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Índices contábeis e a decisão do pagamento de dividendos
Os índices contábeis servem de medida dos diversos aspectos econômicos e financeiros das empresas. Por meio deles, a presente pesquisa busca identificar quais aspectos são relevantes para a distribuição de dividendos no Brasil, considerando ...
Daniel Vancin, Jairo Laser Procianoy
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AbstractTraditional lasers function using resonant cavities, in which the round-trip optical path is equal to an integer multiple of the intracavity wavelengths to constructively enhance the spontaneous emission rate. Taking advantage of the cavity enhancement effect, the narrowest sub-10-mHz-linewidth laser and a 10−16-fractional-frequency-stability ...
Tiantian Shi, Duo Pan, Jingbiao Chen
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In this text, we offer a vision of waste as integral and immanent to valuation practices and argue that engaging with waste materials can thereby significantly contribute to the field of valuation studies.
Emma Greeson+2 more
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In less intensively managed grassland, the micronutrient concentrations in herbage are apparently more likely to be in levels between barely sufficient and deficient than to be excessively high.
H. Laser
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Thermo-optical wavefront distortions in Nd:YVO4 laser amplifiers [PDF]
The power dependence of a Nd:YVO4 laser amplifier beam wavefront was analyzed by Zernike polynomial decomposition. This analysis was performed experimentally and by simulations based on split-step Fourier propagation showing a good agreement.
Schneewind Merle+6 more
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AbstractCavity optomechanics explores the interaction between optical field and mechanical motion. So far, this interaction has relied on the detuning between a passive optical resonator and an external pump laser. Here, we report a new scheme with mutual coupling between a mechanical oscillator supporting the mirror of a laser and the optical field ...
Yang, Weijian+5 more
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Lasers are a very effective approach for treating many hyperpigmented lesions. They are the gold standard treatment for actinic lentigos and dermal hypermelanocytosis, such as Ota nevus. Becker nevus, hyperpigmented mosaicisms, and lentigines can also be successfully treated with lasers, but they could be less effective and relapses can be observed ...
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