blackberry diversity is high in iran due to its wild and natural populations especially in south of caspian sea. however it has not been investigated before. the goal of this work was to evaluate some wild populations of black berry in mazandaran province of iran. at first, region and then location of blackberries plants identified and the traits of leaf, stem, spin, flower, fruit quantity and ...

We investigate the escape rate of the biaxial nanospin particle with a magnetic field applied along the easy axis. The model studied here is described by the Hamiltonian H = −AS z − BS x − HSz, (A > B > 0). By reducing this Hamiltonian to a particle one, we derive, for the first time, an effective particle potential for this model and find an analytical form of the phase boundary line between f...

We say that two languages X and Y are conjugates if they satisfy the conjugacy equation XZ = ZY for some language Z. We study several problems associated to this equation. For example, we characterize all sets which are conjugated via a two-element biprefix set Z, as well as all two-element sets which are conjugates. Mathematics Subject Classification. 68R15, 68Q70.

Abstract Air quality has greatly improved in China owing to the strict control policy enforced during last decade. This study investigated impact of particulate pollution on aerosol hygroscopicity and cloud condensation nuclei (CCN) activity North based several data sources. The mass concentration particles with an aerodynamic diameter smaller than 2.5 µ m (PM ) decreased by one third from summ...