Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p+p Collisions at sqrt(s)=200 GeV

The momentum distribution of electrons from semi-leptonic decays of charm and bottom for mid-rapidity |y|<0.35 in p+p collisions at sqrt(s)=200 GeV is measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) over the transverse momentum range 2 < p_T < 7 GeV/c. The ratio of the yield of electrons from bottom to that from charm is presented. The ratio is determined using partial D/D^bar --> e^{+/-} K^{-/+} X (K unidentified) reconstruction. It is found that the yield of electrons from bottom becomes significant above 4 GeV/c in p_T. A fixed-order-plus-next-to-leading-log (FONLL) perturbative quantum chromodynamics (pQCD) calculation agrees with the data within the theoretical and experimental uncertainties. The extracted total bottom production cross section at this energy is \sigma_{b\b^bar}= 3.2 ^{+1.2}_{-1.1}(stat) ^{+1.4}_{-1.3}(syst) micro b.Comment: 432 authors, 6 pages text, 3 figures. Submitted to Phys. Rev. Lett. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.htm

A pragmatic 3D visual servoing system

Proceedings - IEEE International Conference on Robotics and Automation44185-4190PIIA

Modified Smith predictor with DeMenthon-Horaud pose estimation algorithm for 3D dynamic visual servoing

10.1017/S0263574702004356Robotica206615-624ROBO

Expression and potential role of phospholipase D1 in cryoinjured cerebral cortex of rats

The expression and potential role of phospholipase D1 (PLD1) were studied in the cerebral cortex of rats after freeze injury. Histopathologically, cryoinjury, by exposing cerebral cortex to a prechilled rod for 1 minute, produced consistent pathological lesions, specifically neuronal death, infiltration of macrophages into the center of the cryoinjury, and reactive astrogliosis at the periphery, which caused the lesion site to become encased. Western blot analysis showed that PLD1 expression in the ipsilateral cerebral cortex increased significantly during days 1 to 3 after cryoinjury and declined slightly at post-injury day 7. PLD1 immunoreactivity was very low in the brains of sham-operated control adults. After cryoinjury, there was substantial PLD1 immunostaining of numerous inflammatory cells in the ipsilateral cortex, which were identical to ED1-positive macrophages. In addition, PLD1 immunoreactivity was increased in some neurons and astrocytes at the periphery of the cryoinjury at postinjury days 3 and 7. These findings suggest that cryoinjury by means of prechilled rods induced consistent histopathological changes in the cerebral cortex. In addition, expression of a cell activation signal, PLD1, was upregulated in macrophages and astrocytes in the ipsilateral cerebral cortex after cryoinjur

Multirate predictor control scheme for visual servo control

10.1049/ip-cta:20020238IEE Proceedings: Control Theory and Applications1492117-124ICTA

Isolation of Waddlia malaysiensis, A Novel Intracellular Bacterium, from Fruit Bat (Eonycteris spelaea)

An obligate intracellular bacterium was isolated from urine samples from 7 (3.5%) of 202 fruit bats (Eonycteris spelaea) in peninsular Malaysia. The bacterium produced large membrane-bound inclusions in human, simian, and rodent cell lines, including epithelial, fibroblastlike, and lymphoid cells. Thin-section electron microscopy showed reticulate bodies dividing by binary fission and elementary bodies in the inclusions; mitochondria surrounded the inclusions. The inclusions were positive for periodic acid-Schiff stain but could not be stained by fluorescein-labeled anti–Chlamydia trachomatis major outer membrane protein monoclonal antibody. The bacterium was resistant to penicillin and streptomycin (MICs >256 mg/L) but susceptible to tetracycline (MIC = 0.25 mg/L) and chloramphenicol (MIC = 0.5 mg/L). Sequence analysis of the 16SrRNA gene indicated that it was most closely related to 2 isolates of Waddlia chondrophila (94% and 96% identity). The 16S and 23S rRNA gene signatures were only 91% identical. We propose this novel bacterium be called W. malaysiensis