This thesis has been motivated by intracellular transport phenomena, such as kinesins and myosins moving along cytoskeletal filaments or ribosomes along messenger RNA. In both cases molecular motors move uni-directionally along a one-dimensional track. This motion is driven by the free energy released in the chemical hydrolysis reaction of ATP (adenosine-triphosphate). It drives conformational ...

In 2005, we have made further progress in the studies of atom correlations in one-dimensional (1D) Bose gases [1]. We have calculated the density profiles and density correlation functions of a harmonically trapped (nonuniform) 1D Bose gas, using the exact finite-temperature solutions for the uniform case and applying a local density approximation. The results are valid for a trapping potential...

Tropospheric ozone, lot-med from nonlinear reactions between VOC5 and nitrogen oxides (NOr), is a primarr constituent of urban smog (1). Estimates of VOC control costs needed to attain the National Ambient Air Quality Standard (NAAQS) for ozone of 0.12 parts per million are on the order of billions of dollars per year, and in the most severely impacted region~, the necessary control technologie...

Thirty-four prizes and awards will be presented during special sessions at three spring meetings of the Society: the 2010 March Meeting, March 15-19, in Portland, OR, the 2010 “April” Meeting, February 13-16, in Washington, DC, and the 2010 Atomic, Molecular and Optical Physics Meeting, May 25-29, in Houston, TX. Citations and biographical information for each recipient follow. The Apker Award ...

Over the past decade there has been renewed interest within AI in building simple autonomous ’creatures’ as a way of investigating mechanisms underlying the generation of adaptive behaviour [4, 1]. The vast majority of researchers in this field use some form of artificial neural network (ANN) as the basis of the ’nervous system’ of their agents. These networks can be envisaged as simple nodes c...

The aim of this study is to evaluate the biodegradation performance of phenol in a fixed biofilm developed in sand soil media. The parameters which had been studied and may influence the biodegradation were: a) the grain size of sand, b) the rate of flow, and c) the initial phenol loading. Laboratory scale of two columns with inner diameter of 5 cm was used. The first column was packed with fin...

The biosynthesis of glucagon was studied by using the recirculated, isolated perfused rat pancreas. [3H]Tryptophan was initially incorporated into acid-ethanol-extractable protein, which on gel filtration was eluted with a molecular weight ofabout 9000 and contained a small amount of glucagon immunoreactivity. With longer incubation [3H]tryptophan incorporation into a second peak was obtained i...

This paper reports on the development of an open-closed configuration for continuous kinetic methods based on photochemical reactions; the configuration removes the need to use special flow cells for simultaneous irradiation and detection. The sample plug was recirculated through a circuit including the detector and a coil irradiated with an ultra-violet source. A multipeak recording per inject...

These experiments describe the preparation of pure marrow-derived lymphocyte suspensions from the thoracic duct of thymectomized, irradiated rats reconstituted with bone marrow cells. The majority of marrow-derived cells were small lymphocytes morphologically indistinguishable from small lymphocytes in thoracic duct lymph of normal donors. Marrow-derived small lymphocytes (B lymphocytes) were a...