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Showing 1-30 of 201 results for "633100" within Papers
Carbon sequestration: managing forests in uncertain times.
Valentin Bellassen et al.
Nature, 506(7487), 153-155 (2014-02-15)
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
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
Low-temperature preparation of functional carbon nanocapsules via self-assembly and carbonization of hexayne amphiphiles.
Stephen Schrettl et al.
Chimia, 67(6), 429-429 (2013-08-16)
Lei Wang et al.
Journal of environmental sciences (China), 25(3), 452-459 (2013-08-08)
Microcystis aeruginosa was used to study the effect of KMnO4 pre-oxidation on algal removal through coagulation with polyaluminium chloride (PAC). KMnO4 pre-oxidation improved the coagulation efficiency of algal at a low dosage of PAC. The optimal KMnO4 feeding period was
Rossana Sidari et al.
International journal of food microbiology, 189, 146-152 (2014-08-26)
Polyphenols are a major component of wine grapes, and contribute to color and flavor, but their influence upon yeast growth forms has not been investigated. In this work we have studied the effect of polyphenols on the ability of natural
Vaneet Saini et al.
Angewandte Chemie (International ed. in English), 52(43), 11206-11220 (2013-10-10)
Ethylene, the simplest alkene, is the most abundantly synthesized organic molecule by volume. It is readily incorporated into transition-metal-catalyzed carbon-carbon bond-forming reactions through migratory insertions into alkylmetal intermediates. Because of its D2h symmetry, only one insertion outcome is possible. This
Cinzia Formighieri et al.
Archives of microbiology, 196(12), 853-861 (2014-08-15)
Escherichia coli was used as a microbial system for the heterologous synthesis of β-phellandrene, a monoterpene of plant origin with several potential commercial applications. Expression of Lavandula angustifolia β-phellandrene synthase (PHLS), alone or in combination with Picea abies geranyl-diphosphate synthase
Xuexia Wang et al.
Environmental monitoring and assessment, 186(10), 6903-6917 (2014-07-16)
A 3-year survey was conducted to explore the relationships among plant composition, productivity, and soil fertility characterizing four different degradation stages of an alpine meadow in the source region of the Yangtze and Yellow Rivers, China. Results showed that plant
Clemens Vinzenz Ullmann et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(28), 10073-10076 (2014-07-02)
The Toarcian oceanic anoxic event (T-OAE; ∼ 183 million y ago) is possibly the most extreme episode of widespread ocean oxygen deficiency in the Phanerozoic, coinciding with rapid atmospheric pCO2 increase and significant loss of biodiversity in marine faunas. The
Anton Poot et al.
Environmental pollution (Barking, Essex : 1987), 193, 247-253 (2014-07-27)
Here, we provide Rock Eval and black carbon (BC) characteristics and polycyclic aromatic hydrocarbon (PAH) distribution coefficients (KD) for sediments from the Danube, Elbe, Ebro, and Meuse river basins. PAH desorption kinetic parameters were determined using sequential Tenax extractions. We
N Cappelletti et al.
Bulletin of environmental contamination and toxicology, 93(4), 388-392 (2014-08-01)
Settling particles (SPs) and sediments collected in the Buenos Aires sewer area were analyzed for dioxin like polychlorinated biphenyls (dlPCBs) and polybrominated diphenyl ethers (PBDEs) to follow early diagenetic changes during transport and deposition of organic matter. SP showed a
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
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
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
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
Kristiina Karhu et al.
Nature, 513(7516), 81-84 (2014-09-05)
Soils store about four times as much carbon as plant biomass, and soil microbial respiration releases about 60 petagrams of carbon per year to the atmosphere as carbon dioxide. Short-term experiments have shown that soil microbial respiration increases exponentially with
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
Koichi Ando et al.
International journal of radiation biology, 90(12), 1119-1124 (2014-06-14)
To determine the dose-dependent relative biological effectiveness (RBE) for tumor prevalence in mice receiving single localized doses to their right leg of either carbon ions (15, 45 or 75 keV/μm) or 137Cs gamma rays. A total of 1647 female C3H
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
Energy policy: A low-carbon road map for China.
Zhu Liu et al.
Nature, 500(7461), 143-145 (2013-08-09)
B Mukherjee et al.
Journal of environmental biology, 35(3), 577-588 (2014-05-13)
Modelling system dynamics in a hyper-eutrophic lake is quite complex especially with a constant influx of detergents and sewage material which continually changes the state variables and interferes with the assessment of the chemical rhythm occurring in polluted conditions as
Hong Xiang et al.
Journal of environmental sciences (China), 25(4), 677-687 (2013-08-09)
The growth and metabolism of microbial communities on biologically activated carbon (BAC) play a crucial role in the purification of drinking water. To gain insight into the growth and metabolic characteristics of microbial communities and the efficiency of drinking water
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
Hongyan Song et al.
Journal of nanoscience and nanotechnology, 14(2), 1799-1810 (2014-04-23)
As a novel functional material, carbon nanofiber has many interesting applications in the chemical industry, material science, and energy storage fields. Chemical vapor dispersion and carbonization polymer nanofibers are the two important routes to synthesize carbon nanofibers. In this mini-review
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
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
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
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
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