Carbon-fixation is a critical process in severely oligotrophic Antarctic Dry Valley (DV) soils and may represent the major source of carbon in these arid environments. However, rates of C-fixation in DVs are currently unknown and the microorganisms responsible for these activities unidentified. In this study, C-fixation rates measured in the bulk arid soils (<5% moisture) ranged from below dete...

The dimeric rhodium precursor [Rh(CO)2Cl]2 reacts with quinoline (a) and its three isomeric carboxaldehyde ligands [quinoline-2-carboxaldehyde (b), quinoline-3-carboxaldehyde (c), and quinoline-4carboxaldehyde (d)] in 1:2 mole ratio to afford complexes of the type cis-[Rh(CO)2Cl(L)] (1ae1d), where L 1⁄4 aed. The complexes 1ae1d have been characterised by elemental analyses, mass spectrometry, I...

Electronic delocalization, a central concept in organic chemistry, is being invoked increasingly in biological contexts [1–3]. We have discovered a non-covalent interaction in proteins, termed the n→π* interaction, in which the lone pair (n) of the oxygen (Oi–1) of a peptide bond overlaps with the antibonding orbital (π*) of the carbonyl group (C′i=Oi) of the subsequent peptide bond (Figure 1A,...

Human small cell lung cancer (SCLC) is highly aggressive, and quickly develops resistance to therapy. SCLC cells are typically insensitive to glucocorticoids due to impaired glucocorticoid receptor (GR) expression. This is important as we have previously shown that expression of a GR transgene induces cell death in-vitro, and inhibits tumor growth in-vivo. However, the underlying mechanism for ...

nowadays, one-dimensional cutting stock problem (1d-csp) is used in many industrial processes and re-cently has been considered as one of the most important research topic. in this paper, a metaheuristic algo-rithm based on the simulated annealing (sa) method is represented to minimize the trim loss and also to fo-cus the trim loss on the minimum number of large objects. in this method, the 1d-...

The [2 + 2] photochemical cycloadditions (the Paternò-Büchi reaction) of 5- or/and 6-methyl substituted uracil derivatives with 4,4'-disubstituted benzophenones generate two series of regioisomeric oxetanes, 3 and 4. The regioselectivity (3/4) and the photochemical efficiency are strongly dependent on methyl substituent(s) at the C5-C6 double bond of the uracils. The more the methyl groups at t...

A 71-year-old man was admitted for acute coronary syndrome. Six weeks earlier, he had a Promus Premier 3.0 12-mm (Boston Scientific, Natick, Massachusetts) drug-eluting stent (DES) implanted in the obtuse marginal (OM) artery for unstable angina. On repeat coronary angiography, haziness (Figure 1A, Online Video 1) in the ostial stented region was observed; however Thrombolysis In Myocardial Inf...

The Neoštokavian dialect of Croatian belongs to the somewhat obscure category of pitch accent languages,1 making use of both tone and another type of prominence, usually termed stress, in wordlevel prosody (Babić, 1988; van der Hulst & Smith, 1988; Bethin, 1994; Inkelas & Zec, 1988; Zec, 1992, 1999). The interaction between tone and stress yields four accents, traditionally called long falling ...