Dropsondes from the NOAA G-IV aircraft were used to examine the presence of low bulk Richardson numbers RB in tropical cyclones. At least one 400-m layer above z 5 7.5 km exhibited RB , 1 in 96% of the sondes andRB# 0.25 in 35%of the sondes. The latter represent almost certain turbulence. Sondes frommajor Hurricane Ivan (2004) were examined in detail. Turbulent layers fell into three broad grou...

Thin-film nanocrystalline zinc oxide electrodes were fabricated by electrochemical deposition of ZnO on FTO-coated glass slides. promoted CdO coating top in amounts corresponding to 0.8, 0.1, and 0.05 C cm−2 electric units. Modification a small amount CdO, cm−2, shifts the photoactivity composite photoanode into visible part solar spectrum. It is shown that ZnO/(0.05C)CdO/FTO electrode demonstr...

Semiconductor nanocrystals (NCs) have emerged as an important class of materials because of their tunable optoelectronic properties that arise from quantum size effects. They can be used as active components in functional nanocomposites, chemical sensors, biomedicine, optoelectronics, and nanoelectronics. More recently, NCs of different shapes, including rods, bipods, tripods, tetrapods, and cu...

Hedgehog (Hh) signaling plays essential roles in various developmental processes, and its aberrant regulation results in genetic disorders or malignancies in various tissues. Hyperactivation of Hh signaling is associated with lung cancer development, and there have been extensive efforts to investigate how to control Hh signaling pathway and regulate cancer cell proliferation. In this study we ...

The Steubenville Comprehensive Air Monitoring Program is comprised of two complementary and inter-related programs which cannot stand independently. One project is funded through the Ohio Department of Development (ODOD) Coal Development Office (CDO) under Grant Agreement No. CDO/D-98-2. The other project is described in Unsolicited Proposal No. P9908026 “Characterization of the PM2.5, PM10, an...

Various surface structures and polarities of one-dimensional nanostructures offer additional control in synthesizing heterostructures suitable for optoelectronic and electronic applications. In this work, we report synthesis and characterization of ZnO-CdO nanorod-based heterostructures grown on a-plane sapphire. The heterojunction formed on the sidewall surface of the nanorod shows that wurtzi...

We consider a bottom-up Markovian copula model of portfolio credit risk where dependence among credit names mainly stems from the possibility of simultaneous defaults. Due to the Markovian copula nature of the model, calibration of marginals and dependence parameters can be performed separately using a two-steps procedure, much like in a standard static copula set-up. In addition, the model adm...

We consider a bottom-up Markovian model of portfolio credit risk where dependence among credit names stems from the possibility of simultaneous defaults. A common shocks interpretation of the model is possible so that efficient convolution recursion procedures are available for pricing and hedging CDO tranches, conditionally on any given state of the Markov model. Calibration of marginals and d...