The transcription of genes encoding pigment binding proteins in the facultative photosynthetic bacterium Rhodobacter capsulatus is regulated in response to oxygen partial pressure. Previous results identified RegA and RegB as members of a two component system involved in oxygen dependent synthesis of the photosynthetic apparatus. Here we demonstrate that RegA differentially controls the transcr...

My perspective is different from that of Dr. Weksler. I see age-related loss of responsiveness as a cardinal feature of immunosenescence, one that puts elderly people at risk of infection and perhaps neoplasia. It is possible that age-associated increases in the activity of some kinds of immune cells, which Dr. Weksler has emphasized, contribute to this decline in protective immunity, although ...

In this report, we present comprehensive recommendations for the diagnosis and treatment of large hemispheric infarction (LHI). A systematic literature search was conducted until June 30, 2010. The American Heart Association Stroke Council's Levels of Evidence grading algorithm was used to grade each recommendation (Table 1). The guideline was revised after several official meetings with local ...

In this paper, we propose a framework for interactive image segmentation. The goal of interactive image segmentation is to classify the image pixels into foreground and background classes, when some foreground and background markers are given. The proposed method minimizes a min-max Bayesian criterion that has been successfully used on image segmentation problem and it consists of several steps...

The quantum yield and lifetimes of fluorescence and triplet state of the B820 subunit of core antenna of photosynthetic purple bacterium Rhodospirillum rubrum are reported at temperature range from 4.2 to 300K. The fluorescence quantum yield of B820 is strongly dependent on temperature. From 4.2 to about 200 K the yield remains nearly constant. A nonradiative decay process becomes activated aro...

The kmeloplaslid flagellates, together \Villi lllcil SlSl¢l ~lOUp (d euglenoid>, represenl ]lie, earlies| extan* }incage of eukaryotIc c~rgani>ms conlainnlg milocbondria (]). \Xzilbu: file kinen~plaslids, there arc two maj<~l groups, ll~e p,~olly studied bodonidscrypn-4qids, which con>is, of both ttce-lix m~ and parasllit cells, and :be bcuel kilo\vii irypallc~>onlalids, w]licll are i4~hFalc pa...

BACKGROUND & OBJECTIVES Dengue virus activity has never been reported in the state of Goa. The present study was carried out to document a multilevel geographic distribution, prevalence and preliminary analysis of risk factors for the invasions of Aedes aegypti in Goa. METHODS A geographic information system (GIS) based Ae. aegypti surveys were conducted in dry (April 2002) and wet (July 2002...

This paper reports on two collision experiments involving nucleobases. Electronimpact fragmentation of nucleobases is being studied in an experiment at the National University of Ireland, Maynooth. Ion impact studies have been performed at ARIBE at CIMAP in Caen, with support of the ITS LEIF network (RII3-026015) funded by the EU. In the experiment at Maynooth, a molecular beam of nucleobases i...