The quasar 3C 345 is one of the best examples of extra-galactic jet with superluminal components moving on helical paths. To get better constraints on the jet physics, we have imaged the source at the highest possible resolution, using mm-VLBI and space-VLBI observations. We observed 3C 345 at 5 different epochs so far (1 epoch with 3-mm ground VLBI, and 4 epochs with space VLBI at 6 cm and 18 ...

All data in the B band for quasar 3C 345 have been compiled into a light curve from twenty one publications, dating back to 1896; 1642 values are available. The light curve shows that 3C 345 is very active and exhibits very complicated nonsinusoidal variations. Using this data we have found a period of 10.1±0.8 years (or 21.8±1.5 years) for the outbursts in 3C 345. This value is in good agreeme...

40 : 40 : 20, respectively. Factor T was purified by eluting with acetonitrile water 60 : 40. The purified antibiotics precipitated from the elutes after elimination of the acetonitrile under vacuum.GE2270factors were obtained as white powders showing HPLCretention times and molecular weights reported in Table 1. Factor T showed UV spectra with ^MCl 250, 280 (sh), 345 (sh); ^maxN KOH 240 (sh), ...

, (2014); 345 Science et al. Rudolf P. Rohr On the structural stability of mutualistic systems This copy is for your personal, non-commercial use only. clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be obtained by Permission to republish or repurpose articles or...

, 799 (2014); 345 Science et al. Cody Geary nanostructures A single-stranded architecture for cotranscriptional folding of RNA This copy is for your personal, non-commercial use only. clicking here. colleagues, clients, or customers by , you can order high-quality copies for your If you wish to distribute this article to others here. following the guidelines can be obtained by Permission to re...

Genome integrity is monitored by a checkpoint that delays mitosis in response to DNA damage. This checkpoint is enforced by Chk1, a protein kinase that inhibits the mitotic inducer Cdc25. In fission yeast, Chk1 is regulated by a group of proteins that includes Rad3, a protein kinase related to human ATM and ATR. These kinases phosphorylate serine or threonine followed by glutamine (SQ/TQ). Fiss...

This study aimed to investigate the frequency of geohelminthic contamination of public parks and squares in Curitiba, state of Paraná, Brazil, between August and December 2010. A total of 345 samples were collected from 69 sandboxes in different areas and were tested using the Faust, Lutz and Baermann parasitological techniques. Potential risk factors associated with soil contamination were als...