We have measured the polarization of fluorescence emitted by the noble gases He, Ne, Ar, Kr, and Xe following impact excitation by polarized electrons. In He, the 3P→2S transition was studied; in the heavy noble gases the np(n11)p D3→np(n11)s P2 transitions were analyzed. We investigated these transitions as candidates for efficient optical electron polarimetry and found that, because of their ...

The subcomponents of the cervical evoked response, N11, N13, N14, and the following positivity, were studied in 13 patients with full arrest of the intracerebral circulation, isoelectric EEGs and abolished cortical somatosensory evoked responses. The peak negativity (N13) and the following positive wave were present in all patients. Also N11 and N14 could be identified in most patients either a...

Streptomyces sp. N11-50 was isolated from deep-sea water and found to produce diketopiperazine (DKP) compounds such as albonoursin cyclo(Phe-Leu). This study aimed reveal the potential synthesize diverse nonribosomal peptide polyketide other secondary metabolites different DKP after clarifying taxonomic position. Strain identified albus, it showed 100% 16S rRNA gene sequence similarities 95.5% ...

introduction: constipation is one of the most common pediatric disorders.in many cases, there is no anatomic endocrineor metabolic cause in explanation of chronic constipation.more than 85% of them called functional or idiopathic.constipation is one of the serious disease in iranian traditional medicine. besides the problem it causes, chronic constipation can be the origin of many disease. that...

In the current study abilities for mixotrophic growth of phototropic cave strains were observed. The influence organic substrates on rate Chlorella vulgaris, Stichococcus bacillaris, Leptolyngbya foveolara, Scytonema studied. most cases glucose, maltose, glycerine, malate, acetate, sucrose, and peptone showed a stimulating effect culture by dark light incubation. Specific carbon consumption pro...

Biological soil crusts (biocrusts), which supply significant amounts of fixed nitrogen into terrestrial ecosystems worldwide (∼33 Tg y(-1)), are likely to respond to changes in temperature and precipitation associated with climate change. Using nifH gene-based surveys, we explored variation in the diazotrophic community of biocrusts of the Colorado Plateau, USA in response to season (autumn vs....

We report here the draft genome sequence of Scytonema millei VB511283, a cyanobacterium isolated from biofilms on the exterior of stone monuments in Santiniketan, eastern India. The draft genome is 11,627,246 bp long (11.63 Mb), with 118 scaffolds. About 9,011 protein-coding genes, 117 tRNAs, and 12 rRNAs are predicted from this assembly.

Chiral auxiliary-mediated dynamic resolution of α-halo esters has been known as an effective method for asymmetric synthesis of α-heteroatom substituted carboxylic acid derivatives. While the synthetic method can achieve a useful level of stereoselectivity, it is still of interest to find novel ways to utilize the dynamic resolution for practical synthesis. We have previously reported L-malate-...

PURPOSE Chronic inflammatory processes contribute to the pathogenesis of many age-related diseases. In search of anti-inflammatory foods, we have systematically screened a variety of common dietary plants and mushrooms for their anti-inflammatory activity. METHODS A selection of 115 samples was prepared by a generic food-compatible processing method involving heating. These products were test...

Biological desert crusts are relatively common in the arid deserts of the Sultanate of Oman; however, little is known about their microbial community composition and role in soil fertilization. We compared three crusts from geographically different locations for their soil texture, bacterial community structure, pigment composition and nitrogenase activity. The crusts were growing on alkaline (...