Architecture as Multimedia. Jean Nouvel, the DR Concert Hall, and the Gesamtkunstwerk

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Coherence length of single laser pulses as measured by CCD interferometry

A novel interferometric method for the direct, real-time measurement of the complete temporal coherence function of a pulsed laser is presented. A Michelson interferometer is modified by replacing one mirror with an inclined diffraction grating to observe interference fringes as a function of path-length difference on a single pulse. Computerized data acquisition and methods of extending the range of wavelengths to the infrared are discussed

Nature of intensity and phase modulations in stimulated Brillouin scattering

The nature of stimulated Brillouin scattering (SBS) temporal modulations for a focused beam in a finite-length cell with homogeneous medium is examined numerically. The finite phonon lifetime produces deterministic oscillations at the threshold while the inclusion of the random noise as an initiation source of SBS leads to stochastic fluctuations in Stokes intensity and phase. A unified study of both modulations under different parameters is presented. The results indicate a large useful parameter space for excellent Stokes beam quality.Shahraam Afshaarvahid, Vladimyros Devrelis, and Jesper Munc

OncoLog Volume 53, Number 05, May 2008

Hepatocellular Carcinoma: New Standards in Therapy Emerging House Call: When Diagnosis Meets Denial In Brief: Overweight, Obese Patients Fare Worse with Breast Cancer, Researchers Find DiaLog: ASPIRE to Stop Teen Smoking, by Alexander V. Prokhorov, MD, PhD, Project Director, ASPIRE, Professor, Department of Behavioral Science A Reverse Approach to Adrenal Gland Resectionhttps://openworks.mdanderson.org/oncolog/1170/thumbnail.jp

Preservation and analytical procedures for the analysis of chloro-\u3ci\u3es\u3c/i\u3e-triazines and their chlorodegradate products in drinking waters using direct injection liquid chromatography tandem mass spectrometry

A direct injection, liquid chromatography tandemmass spectrometry (LC–MS/MS)method has been developed for the analysis of the chloro-s-triazine herbicides and their degradates in finished drinking water. The target compounds in the method were selected based on their inclusion in a common mechanism group (CMG) because of their ability to induce a similar toxic effect through a common mechanism of toxicity. The target list includes the chloro-s-triazines (atrazine, simazine, cyanazine, and propazine) and their dealkylated degradates (desethylatrazine, desisopropylatrazine, and diaminochlorotriazine). Potential matrix effects are minimized by the use of individual isotopically enriched internal standards. Analyte stability in finished chlorinated drinking water samples is ensured through careful selection of proper dechlorinating and antimicrobial reagents and through buffering sample pH. In the absence of proper dechlorination, the target analytes were found to degrade over a short period of time, even under refrigerated storage conditions. The final method has adequate sensitivity to accurately detect all target analytes at or below0.1µg/L and displays sufficient precision and robustness towarrant publication as EPA Method 536

Byg og hold bøtte!

Sven-Olov Wallenstein: The Silences of Mies, Stockholm 2008 (Axl Books