A clinical trial of acupuncture for chronic fatigue syndrome

Weld inspections of fabricated plate and pipe assemblies made with shear wave angle beam transducers are a common and important application of ultrasonic NDE. It is now possible to develop complete models of such angle beam inspections (see, for example, the measurement model of Thompson and Gray [1]) for many practical configurations. One important element in these models is the calculation of the fields generated by the angle beam transducer, i.e. the transducer beam model. To date, three different beam models have been derived and studied. They are the Surface Integral model [2], the Boundary Diffraction Wave (BDW) Paraxial model [2], and the Edge Element model. Each has certain advantages and disadvantages associated with it, as will be seen in later sections of this paper

accurate and self-consistent ocean color algorithm:simultaneous retrieval of aerosol optical properties and chlorphyll concentrations

A new algorithm has been developed for simultaneous retrieval of aerosol optical properties and chlorophyll concentrations in case I waters. This algorithm is based on an improved complete model for the inherent optical properties and accurate simulations of the radiative transfer process in the coupled atmosphere-ocean system. It has been tested against synthetic radiances generated for the Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) channels and has been shown to be robust and accurate. A unique feature of this algorithm is that it uses the measured radiances in both near-IR and visible channels to find that combination of chlorophyll concentration and aerosol optical properties that minimizes the error across the spectrum. Thus the error in the retrieved quantities can be quantified

The Paraxial Approximation for Radiation of a Planar Ultrasonic Transducer at Oblique Incidence Through an Interface

The inspection of welds in structural plates with ultrasonic contact transducers is an important application of ultrasonic NDE [1]. Models that completely describe transducer/flaw interactions can help to make reliable, quantitative measurements on the welds in question. Thus, recently we have begun development of an ultrasonic weld inspection simulator and will present the preliminary work for the simulator in this paper

Resveratrol methylated derivatives as neuroprotective agents in 6-hydroxydopamine-induced SH-SY5Y cells

Conference Topic: Is Aging a Diseace

Impact of particulate and dissolved material on light absorption properties in a High-Altitude Lake in Tibet, China

Ground-based measurements of optical properties have rarely been conducted for lakes located on the Tibetan Plateau (TP). In this study, we analyzed the spectral absorption properties of phytoplankton, non-algal particles, and colored dissolved organic matter sampled in Lake Namtso on the TP in order to obtain the variability in the light absorption properties of each of these three components and the relative contribution of each component. The Chlorophyll-a concentration was found to be very low. The mean value of the spectral slope for CDOM absorption was found to be 0.036 nm, whereas the corresponding mean value for was found to be 0.015 nm, implying that when comparing spectral slope values with published values, the wavelength range used for deriving them should be considered. Additional peaks were found for phytoplankton sampled in Lake Namtso in the wavelength ranges 310-370 and 600-640 nm, indicating a significant contribution by accessory pigments to the phytoplankton absorption. The Chlorophyll-a specific absorption coefficients of phytoplankton at 440 and 675 nm in Lake Namtso were found to be much higher than previously reported values, due to the combination of a small package effect and contributions by accessory pigments