We report here on extensive radio observations of the binary system containing PSR B1259−63 and the Be star SS 2883, made around the time of the 2004 peri-astron. This is the fourth periastron to have been observed in detail. As in previous observations, changes in the pulsar's dispersion and rotation measures are detected over a period spanning 200 days. We show that the eclipse of the pulsed ...

We discuss the implications of the recent Xray and TeV γ-ray observations of the PSR B1259–63 system (a young rotation powered pulsar orbiting a Be star) for the theoretical models of interaction of pulsar and stellar winds. We show that previously considered models in which the pulsar wind is purely electron loaded have problems to account for the observed behaviour of the system in the TeV an...

Infrared spectroscopy has been used to detect HO(2) and HO(3) radicals in H(2)O + O(2) ice mixtures irradiated with 0.8 MeV protons. In these experiments, HO(2) was formed by the addition of an H atom to O(2) and HO(3) was formed by a similar addition of H to O(3). The band positions observed for HO(2) and HO(3) in H(2)O-ice are 1142 and 1259 cm(-1), respectively, and these assignments were con...

The effectiveness of a probiotic formulation applied in human vagina depends on the possibility of adaptation of the beneficial microorganisms in this environment. The understanding of the interactions of potentially probiotic microorganisms with the vaginal fluid, which shows some specific physical and chemical properties, can help to the design of improved vaginal probiotic formulations. The ...

in order to evaluate the effects of different organic and chemical fertilizers on yield, yield components and seed oil content of sesame an experiment was conducted in a split plot layout based on randomized complete block design with four replications at research station, faculty of agriculture, ferdowsi university of mashhad in year 2006. four types of fertilizer, including chemical fertilize...

Kesehatan mental telah menjadi sorotan penting dalam kehidupan masyarakat sekarang, dan tidak luput dari berbagai industri dunia kerja, termasuk teknologi. Kesadaran akan kepentingan kesehatan pekerja masih sering dianggap rendah, hal ini juga teknologi, oleh karenanya Open Source Mental Illness (OSMI), sebagai lembaga yang bergerak di bidang mental, mengadakan survei untuk mengetahui kesadaran...

The largest eruption of a tropical volcano during the past millennium occurred in AD 1258–1259. Its estimated radiative forcing was several times larger than the 1991 Pinatubo eruption1. Radiative forcing of that magnitude is expected to result in a climate cooling of about 2 C (refs 2–5). This effect, however, is largely absent from tree-ring reconstructions of temperature6–8, and is muted in ...