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Deguo Kong et al.
Chemosphere, 110, 31-40 (2014-06-02)
The effect of projected future changes in temperature, wind speed, precipitation and particulate organic carbon on concentrations of persistent organic chemicals in the Baltic Sea regional environment is evaluated using the POPCYCLING-Baltic multimedia chemical fate model. Steady-state concentrations of hypothetical
Hengzhi You et al.
Nature, 517(7534), 351-355 (2015-01-17)
The development of new reactions forming asymmetric carbon-carbon bonds has enabled chemists to synthesize a broad range of important carbon-containing molecules, including pharmaceutical agents, fragrances and polymers. Most strategies to obtain enantiomerically enriched molecules rely on either generating new stereogenic
J C Rodríguez-Murillo et al.
The Science of the total environment, 502, 206-217 (2014-09-27)
Increases in dissolved organic carbon (DOC) concentrations have often been reported in rivers and lakes of the Northern Hemisphere over the last few decades. High-quality organic carbon (OC) concentration data have been used to study the change in DOC and
Marshall Louis Reaves et al.
Nature, 500(7461), 237-241 (2013-08-02)
Cellular metabolism converts available nutrients into usable energy and biomass precursors. The process is regulated to facilitate efficient nutrient use and metabolic homeostasis. Feedback inhibition of the first committed step of a pathway by its final product is a classical
Carbon sequestration: managing forests in uncertain times.
Valentin Bellassen et al.
Nature, 506(7487), 153-155 (2014-02-15)
Amaia Zúñiga-Ripa et al.
Journal of bacteriology, 196(16), 3045-3057 (2014-06-18)
The brucellae are the etiological agents of brucellosis, a worldwide-distributed zoonosis. These bacteria are facultative intracellular parasites and thus are able to adjust their metabolism to the extra- and intracellular environments encountered during an infectious cycle. However, this aspect of
Xiaoyang Zhang et al.
Journal of nanoscience and nanotechnology, 13(8), 5254-5259 (2013-07-26)
The labeling of living cells with carbon nanoparticles has been increasingly studied both in vivo and in vitro, but concerns about the potential cytotoxicity of these nanoprobes are also increasing. In this study, the fluorescent carbon dots (CDs) without surface
Photoacoustic doppler effect from flowing small light-absorbing particles.
Fang H, et al.
Physical Review Letters, 99, 184501-184501 null
Xuhui Wang et al.
Nature, 506(7487), 212-215 (2014-01-28)
Earth system models project that the tropical land carbon sink will decrease in size in response to an increase in warming and drought during this century, probably causing a positive climate feedback. But available data are too limited at present
Sergio Navalon et al.
ChemSusChem, 4(12), 1712-1730 (2011-12-14)
The Fenton reaction is widely used for remediation of waste water and for the degradation of organic pollutants in water. Currently, there is considerable interest to convert the classical Fenton reaction, which consumes stoichiometric amounts of iron(II) salts, into a
Barney A Geddes et al.
Canadian journal of microbiology, 60(8), 491-507 (2014-08-06)
A large proportion of genes within a genome encode proteins that play a role in metabolism. The Alphaproteobacteria are a ubiquitous group of bacteria that play a major role in a number of environments. For well over 50 years, carbon
Masahiko Hayashi
Chemical record (New York, N.Y.), 8(4), 252-267 (2008-08-30)
This paper describes the utility of an activated carbon-molecular oxygen system, not only in the oxidation of benzylic and allylic alcohols, but also in the direct carbonylation at the benzylic position. The preparation of a variety of heteroaromatic and aromatic
Tuija Mattsson et al.
The Science of the total environment, 508, 145-154 (2015-01-06)
Climate change scenarios for northern boreal regions indicate that there will be increasing temperature and precipitation, and the changes are expected to be larger in winter than in summer. These precipitation and discharge patterns, coupled with shorter ice cover/soil frost
O I Kliaĭn et al.
Prikladnaia biokhimiia i mikrobiologiia, 49(3), 292-300 (2013-07-26)
The ability of the white rot basidiomycetes Trametes hirsuta and Trametes maxima to transform coal humic substances (HS's) under the conditions of solid phase cultivation in the presence or absence of an easily available source of corbon (glucose) has been
Dam reservoirs role in carbon dynamics requires contextual landscape ecohydrology.
Ivan Bergier et al.
Environmental monitoring and assessment, 186(10), 5985-5988 (2014-05-27)
Christopher M Gough et al.
Ecological applications : a publication of the Ecological Society of America, 23(5), 1202-1215 (2013-08-24)
Carbon (C) uptake rates in many forests are sustained, or decline only briefly, following disturbances that partially defoliate the canopy. The mechanisms supporting such functional resistance to moderate forest disturbance are largely unknown. We used a large-scale experiment, in which
Ying Ding et al.
Environmental technology, 35(13-16), 1962-1970 (2014-06-25)
The presence of disinfection by-products, such as trihalomethanes and haloacetic acids in water, is believed to be harmful to human health. In this work, mesoporous carbon was synthesized with the evaporation-induced self-assembly method and employed to evaluate the effects of
Gabor Szalay et al.
Acta orthopaedica Belgica, 79(6), 648-654 (2014-02-26)
Rhizarthrosis is the most common degenerative joint disease of the hand, affecting about 10% of the population. We report our results with trapezium replacement using a pyrocarbon spacer. Between January 2005 and April 2010, 70 patients underwent trapeziectomy with interposition
Anna Iliadi et al.
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 145(4), 425-433 (2014-04-08)
The aim of this study was to assess the effect of intraoral aging on the setting status of a resin composite and a glass ionomer adhesive, relative to control specimens stored in water. Metallic brackets were bonded with resin composite
Mikko Metsä-Ketelä et al.
Current opinion in chemical biology, 17(4), 562-570 (2013-07-28)
Pyranonaphthoquinones synthesized by Streptomyces bacteria via type II polyketide pathways are aromatic compounds build around a common three-ring structure, which is composed of pyran, quinone and benzene rings. Over the years, actinorhodin in particular has served as a model compound
Ivar Zekker et al.
Environmental technology, 35(9-12), 1565-1576 (2014-04-08)
Maintaining stability of low concentration (< 1 g L(-1)) floccular biomass in the nitritation-anaerobic ammonium oxidation (anammox) process in the sequencing batch reactor (SBR) system for the treatment of high COD (> 15,000 mg O2 L(-1)) to N (1680 mg
Yafeng Wang et al.
Ambio, 43(7), 926-931 (2014-04-04)
Check-dams are the most common structures for controlling soil erosion in the Loess Plateau. However, the effect of check-dams on carbon sequestration, along with sediment transport and deposition, has not been assessed over large areas. In this study, we evaluated
O Thomas et al.
Chemosphere, 107, 115-120 (2014-05-31)
A strong non linear relationship between nitrate and organic matter (assessed by dissolved organic carbon, DOC) has been recently demonstrated by Taylor and Townsend (2010), namely for freshwaters. In this context, our study explores this relation from the behavior of
Pranita Jaiswal et al.
Journal of environmental biology, 34(5), 897-902 (2014-02-25)
Inorganic carbon uptake and utilization efficiency of a diazotrophic cyanobacterium, Nostoc calcicola, an 'usar' land isolate and its bicarbonate resistant mutant was investigated. The wild type strain showed significantly higher rate uptake of inorganic carbon as compared to mutant strain.
Cancer treatment: Sharp shooters.
Vivien Marx
Nature, 508(7494), 133-138 (2014-04-04)
Elisangela Heiderscheidt et al.
Journal of environmental sciences (China), 25(4), 659-669 (2013-08-09)
The drainage of peatland areas for peat extraction, agriculture or bioenergy requires affordable, simple and reliable treatment methods that can purify waters rich in particulates and dissolved organic carbon. This work focused on the optimisation of chemical purification process for
Ming Zeng et al.
Environmental technology, 34(17-20), 2571-2578 (2014-02-18)
In trickling filters for wastewater treatment, hydrodynamic behaviour is affected by the growth of biofilm on the porous medium. Therefore, modelling hydrodynamic behaviour is necessary and efficient to predict the biodegradation of pollutants. In this study, laboratory-scale trickling filters were
Sebastian Schnell et al.
Environmental monitoring and assessment, 187(1), 4197-4197 (2014-12-18)
In contrast to forest trees, trees outside forests (TOF) often are not included in the national monitoring of tree resources. Consequently, data about this particular resource is rare, and available information is typically fragmented across the different institutions and stakeholders
Luis F Jover et al.
Nature reviews. Microbiology, 12(7), 519-528 (2014-06-17)
In marine environments, virus-mediated lysis of host cells leads to the release of cellular carbon and nutrients and is hypothesized to be a major driver of carbon recycling on a global scale. However, efforts to characterize the effects of viruses
David Kentner et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(27), 9929-9934 (2014-06-25)
Shigella flexneri proliferate in infected human epithelial cells at exceptionally high rates. This vigorous growth has important consequences for rapid progression to life-threatening bloody diarrhea, but the underlying metabolic mechanisms remain poorly understood. Here, we used metabolomics, proteomics, and genetic
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