background imaging plays a critical role not only in the detection, but also in the characterization of lung masses as benign or malignant. objectives to determine the diagnostic accuracy of dynamic magnetic resonance imaging (mri) in the differential diagnosis of benign and malignant lung masses. patients and methods ninety-four masses were included in this prospective study. five dynamic seri...

In this paper, we report observations on single internally mixed ammonium sulfate/calcium carbonate microparticles. Deliquescence and efflorescence relative humidities for this mixed system are reported. The slightly soluble CaCO3 has a negligible effect on the deliquescence relative humidity and the concentrationdependent water activities. Mixed particles at 298 K were observed to exist in two...

Abstract The major goal of this study is comparing the results heterogeneous and homogeneous condensation through a CD nozzle. experimental technique for liquid phase assessment in wet steam transonic flow tested under real conditions an in-house tunnel test rig. was modelled numerically using CFD code performing models. For comparison between data, static pressure distribution throughout nozzl...

A continuing goal in catalysis is to unite the advantages of homogeneous and heterogeneous catalytic processes. To this end, nanoparticles represent a new frontier in heterogeneous catalysis, where this unification can also be supplemented by the ability to obtain new or divergent reactivity and selectivity. We report a novel method for applying heterogeneous catalysts to known homogeneous cata...

Dani Goldberg Brandeis University Computer Science Department Volen Center for Complex Systems, Room 261 Waltham, MA 02254 [email protected] When working with groups of robots it may be very di cult to determine what characteristics the group requires in order to perform a task most e ciently|i.e., in the least time. Some researchers have used groups of behaviorally di erentiated robots|wher...

When considering the agents mediated electronic marketplace, agents play an active role in both sellers and buyers sides. A seller agent may advertise its products in the market, placing the selling price and looking for the potential buyers in the market. On the other hand, a buyer agent would look for the desired goods or services requested by its user and it has a task to bargain about the p...

A capillary chromatography system has been developed based on the tube radial distribution of the carrier solvents using an open capillary tube and a water-acetonitrile-ethyl acetate mixture carrier solution. This tube radial distribution chromatography (TRDC) system works under laminar flow conditions. In this study, a phase diagram for the ternary mixture carrier solvents of water, acetonitri...

When working with groups of robots it may be very difficult to determine what characteristics the group requires in order to perform a task most efficiently-i.e., in the least time. Some researchers have used groups of behaviorally differentiated robots-where the robots do not perform the same actions-and others have used behaviorally homogeneous groups. None of this research, however, explicit...

A system subject to a point process of shocks is considered. Shocks occur in accordance with a non-homogeneous Poisson process. Different criterions of system failures are discussed in a homogeneous case. Two natural settings are analyzed. Heterogeneity is modeled by an unobserved univariate random variable (frailty). It is shown that reliability (safety) analysis for a heterogeneous case can d...