We hypothesized that dinitrogen (N2 )- and non-N2 -fixing tropical trees would have distinct phosphorus (P) acquisition strategies allowing them to exploit different P sources, reducing competition. We measured root phosphatase activity and arbuscular mycorrhizal (AM) colonization among two N2 - and two non-N2 -fixing seedlings, and grew them alone and in competition with different inorganic an...

Simultaneous with the industries increasing growth, thecompanies must acquire the new technologies to achieve the core competency,survival and improvement and also effectiveness in market. Choosingthe suitable acquisition mode of required technology is one of thecritical strategic decisions in the field of technology management. Dueto the importance of technology acquisition, the main objective...

BACKGROUND To understand and model the impact of pneumococcal conjugate vaccines at the population level, we need to know the transmission dynamics of individual pneumococcal serotypes. We estimated serotype-specific clearance and acquisition rates of nasopharyngeal colonization among Kenyan children. METHODS Children aged 3-59 months who were identified as carriers in a cross-sectional surve...

We propose a scheme for rapid acquisition of PN signals for direct-sequence spread spectrum (DS/SS) CDMA systems by estimating the phase of the incoming PN signal with the use of an auxiliary signal. The phase of the incoming P N signal is estimated using the cross-correlation properties between the PN signal and the auxiliary signal. The estimated phase is used to initialize the phase of the l...

background: cuminum cyminum fruit essential oil (feo) dose-dependently can attenuate the expression of morphine tolerance and dependence in morphine-dependent mice. objective: in this study, the effects of cuminum cyminum feo on acquisition and expression of morphine-induced conditioned place preference (cpp) in morphine-sensitized mice were studied. methods: repeated subcutaneous (s.c.) admini...

this research presents a study concerning the relationship between acquisition premium and acquirer returns in acquisition transactions to examine whether the acquirers have been able to earn back the paid premiums through post-acquisition returns after the acquisition. this study is based on data gathered through acquisitions during the period between 2001 and 2006in tehran stock exchange (tse...

In this paper, acquisition performance with adaptive pre-filtering is analyzed for a "coherent Paralperformance in a mobile fading channel. Under severe multiDath fading conditions. the P N code acauisition is difficult Y le1 matched-filter (MF) acquisition scheme with a reference filter (RF) in a multipath fading channel. Adaptive prefilterina is emoloved to reduce the effect of severe multipa...

Abstract Background and aims In extremely low-phosphorus (P) environments, most Proteaceae exude carboxylates from cluster roots. These mobilise inorganic P which leads to a relatively high leaf manganese concentration ([Mn]). However, we found that Adenanthos cygnorum (Proteaceae) in low-P habitat did not invariably have [Mn] south-western Australia. We aimed explore how A. acquires severely P...