Measuring optical spectra of chromophore molecules entrapped in liposomes can lead to considerable distortion because of absorption flattening. This phenomenon is analyzed theoretically, and it is shown that the deviation from the Beer-Lambert law becomes larger as the molar absorptivity of the chromophore increases and as the number of entrapped molecules becomes larger. The theoretical equati...

Using a novel experimental geometry, we measured the ballistic attenuation of low-coherence optical fields propagating in multiple-scattering media. The high dynamic range and the angular filtering capability permit detecting the ballistic component through random media thicker than 20 mean free paths. Owing to the accuracy of the technique, we observe deviations from the standard Lambert-Beer ...

Chromosome Numbers for Two Species of Mexican Commelinaceae: Earlene Atchison, H. E. Moore, Jr., andC. E.Wood, Jr. ............... .......................... 41 The Application of the Beer-Lambert Law to Optically Anisotropic Systems: Barry Commoner and David Lipkin .................. 41 Opalescence of Serum after Total Body X-Irradiation as a Prognostic Sign of Death: Robert L. Rosenthal ........

In the present paper, a three-dimensional radially symmetric boundary element model of the human eye is proposed for simulating changes in corneal temperature during treatment of laser thermokeratoplasty. Energy absorption inside the cornea is modeled using the Beer-Lambert law. Heat transfer inside the eye is assumed to be governed by the classical heat diffusion equation. The resulting initia...

Rapid and sensitive spectrophotometric method has been developed for the determination of Enalapril in pharmaceutical formulations. The method is based on the complex formation in acidic media (pH 2), using the Tropeolin 00 and hydrochloric acid. The formed complex is extractable with dichloromethane and shows a maximum absorbance at 415 nm, following the Lambert–Beer law in the concentration r...

Lab-on-chip integrated infrared spectroscopy and sensing with hybrid polymer and silicon photonic crystal slot waveguides is demonstrated for the specific and selective identification of volatile organic compounds, xylene and toluene, in water. A 300 micron long photonic crystal slot waveguide was demonstrated that enabled the detection of 100ppb xylene in water by near-infrared absorption sign...

We quantified stand leaf area index and vertical leaf area distribution, and developed canopy extinction coefficients (k), in four mature hardwood stands. Leaf area index, calculated from litter fall and specific leaf area (cm*.g-‘), ranged from 4.3 to 5.4 m*.rn-r. In three of the four stands, leaf area was distributed in the upper canopy. In the other stand, leaf area was uniformly distributed...