We performed neutron reflectrometry ~NR) and nuclear reaction analysis ~NRA) measurements on interdiffusion of protonated and deuterated polystyrene films Covenng several orders of magnitude in time i and resolving interfacial widths w(i) between approximately 2 nm and 60 nm we found two successive time regimes with a crossover corresponding to the reptation

Using a simplex-crossing counting technique we prove: if the number of non-improperly intersecting simplices with vertices in a set S of n labeled points in ~d is O(nra/2]) , then there are 2 °('~rd/21) different geometric simplicial complexes with vertices in S. © 1997 Elsevier Science B.V.

The response of pea (Pisum sativum L.) cv. Climax seeds imbibed with 24-epibrassinolide (EBL) and sodium chloride (NaCl) prior to sowing was evaluated. Soaking of seeds in two different concentrations of EBL (5 and 10 μM) for 4 hours, caused an increase in germination, embryo axis length and most of the aspects of shoot and root growth at seedling stage, maturity stage (90 DAS) along with seed ...

This document proposes an algebra for XML Query. This work builds on long standing traditions in the database community. In particular, we have been inspired by systems such as SQL, OQL, and nested relational algebra (NRA). We have also been inspired by systems such as Quilt, UnQL, XDuce, XML-QL, XPath, XQL, and YaTL. We give citations for all these systems below. In the database world, it is c...

This study examines two key parameters of the hydrological cycle, water vapor (WV) and precipitation rates (PR), as modelled by the chemistry transport model MATCH (Model of Atmospheric Transport and Chemistry) driven by National Centers for Environmental Prediction (NCEP) reanalysis data (NRA). For model output evaluation we primarily employ WV total column data from the Global Ozone Monitorin...

We report on work-in-progress to create an SMT-solver inside Maple for non-linear real arithmetic (NRA). give background information the algorithm being implemented: cylindrical algebraic coverings as a theory solver in lazy SMT paradigm. then present some new work identification of minimal conflicting cores from coverings.

The dynamic load in the soil directly leads to damage of underground structures upon explosions. In this study, a method predict blast on structure surface based neural network was developed study distribution under close-in detonation. First, taking utility tunnel as experimental structure, 52 groups field tests were conducted mechanism, and data samples obtained. Second, key influencing param...

We hypothesized that neotropical Myrtaceae could be organized into groups are naturally less or non-responsive to NO3−, and use other N forms, such as amino acids, for internal transport. Ecophysiological tests were conducted measure nitrate reductase activity (NRA), NO3− content, total N, δ15N natural abundance, the C:N ratio in leaves, free acid, transport via xylem sap. showed tree species h...