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Haiqing Li et al.
Journal of nanoscience and nanotechnology, 14(2), 1425-1440 (2014-04-23)
Carbon nanostructures (CNSs) such as carbon nanotubes, graphene sheets, and nanodiamonds provide an important type of substrate for constructing a variety of hybrid nanomaterials. However, their intrinsic chemistry-inert surfaces make it indispensable to pre-functionalize them prior to immobilizing additional components
Masahito Ueyama et al.
Ecological applications : a publication of the Ecological Society of America, 23(8), 1798-1816 (2014-02-22)
To better understand the spatial and temporal dynamics of CO2 exchange between Arctic ecosystems and the atmosphere, we synthesized CO2 flux data, measured in eight Arctic tundra and five boreal ecosystems across Alaska (USA) and identified growing season and spatial
Chi-lai Ho et al.
Journal of nuclear medicine : official publication, Society of Nuclear Medicine, 55(5), 749-752 (2014-03-29)
We prospectively compared (11)C-acetate with (18)F-FDG in a PET/CT evaluation of multiple myeloma (MM), specifically on diagnostic accuracy, identification of high-risk patients, and monitoring of treatment response. Dual-tracer PET/CT was performed on 35 pathologically and clinically confirmed and untreated patients
Daniel Bravo et al.
Archives of microbiology, 197(1), 65-77 (2014-11-10)
The oxalate-carbonate pathway (OCP) is a biogeochemical set of reactions that involves the conversion of atmospheric CO2 fixed by plants into biomass and, after the biological recycling of calcium oxalate by fungi and bacteria, into calcium carbonate in terrestrial environments.
Biao Zhong et al.
Environmental monitoring and assessment, 186(10), 6169-6192 (2014-06-12)
This study aimed to assess the degree of potential temperature and precipitation change as predicted by the HadCM3 (Hadley Centre Coupled Model, version 3) climate model for Louisiana, and to investigate the effects of potential climate change on surface soil
H Hayzoun et al.
The Science of the total environment, 502, 296-308 (2014-09-30)
An annual-basis study of the impacts of the anthropogenic inputs from Fez urban area on the water geochemistry of the Sebou and Fez Rivers was conducted mostly focusing on base flow conditions, in addition to the sampling of industrial wastewater
Patrick J McCormick et al.
Biomedical instrumentation & technology, 47(4), 347-355 (2013-08-08)
Common practice when validating the cleaning of medical devices is to employ clinically relevant test soils as a challenge to the cleaning process. During use, medical devices may come into contact with a variety of materials that are difficult to
Xiaoxia Lin et al.
Journal of environmental sciences (China), 25(10), 2150-2156 (2014-02-06)
C,N,S-tridoped TiO2 hollow spheres (labeled as C,N,S-THs) were synthesized using carbon spheres as template and C,N,S-tridoped TiO2 nanoparticles as building blocks. The structure and physicochemical properties of the catalysts were characterized by Xray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis
Brent C Christner et al.
Nature, 512(7514), 310-313 (2014-08-22)
Liquid water has been known to occur beneath the Antarctic ice sheet for more than 40 years, but only recently have these subglacial aqueous environments been recognized as microbial ecosystems that may influence biogeochemical transformations on a global scale. Here
Fei Tian et al.
Journal of nanoscience and nanotechnology, 13(6), 4468-4471 (2013-07-19)
Hydrophilic carbon nanoonions coated with carbon nanobubbles were synthesized by long-pulse-width laser ablating of carbon black particles suspended in water. The high resolution TEM (HTREM), selected area electron diffraction (SAED) and Raman spectrometer results revealed that the crystallinity and the
Kyle W Quasdorf et al.
Nature, 516(7530), 181-191 (2014-12-17)
Quaternary carbon stereocentres-carbon atoms to which four distinct carbon substituents are attached-are common features of molecules found in nature. However, before recent advances in chemical catalysis, there were few methods of constructing single stereoisomers of this important structural motif. Here
Bente Ulvestad et al.
Occupational and environmental medicine, 72(2), 108-113 (2014-11-02)
Tunnel construction workers are exposed to particulate and gaseous air contaminants. Previous studies carried out in the 1990s showed that tunnel construction workers were at increased risk of both short-term and long-term lung function decline. Since then, efforts have been
Gergo Mezohegyi et al.
Journal of environmental management, 102, 148-164 (2012-03-31)
During the last decade, several physico-chemical and biological techniques have been developed to remove colour from textile wastewaters. Some of these techniques rely on and many will profit from activated carbon (AC). The role of AC is versatile: (1) it
Sanjukta Subudhi et al.
Chemosphere, 113, 116-124 (2014-07-30)
A bioflocculant-producing bacterial isolate designated as 'TERI-IASST N' was isolated from activated sludge samples collected from an oil refinery. This isolate demonstrated maximum bioflocculation activity (74%) from glucose among 15 different bioflocculant-producing bacterial strains isolated from the sludge samples and
Michael G Mason et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(16), 6092-6097 (2014-04-09)
For almost a century the plant hormone auxin has been central to theories on apical dominance, whereby the growing shoot tip suppresses the growth of the axillary buds below. According to the classic model, the auxin indole-3-acetic acid is produced
Kentaro Okano
Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan, 133(10), 1065-1078 (2013-10-04)
Total syntheses of yatakemycin, PDE-II, dictyodendrins, and heptaphylline are described. This article focuses on the formation of aryl carbon-nitrogen bonds by two methods: first by an aromatic amination reaction using a combination of CuI and CsOAc, and then by a
Stephen D Fried et al.
Science (New York, N.Y.), 346(6216), 1510-1514 (2014-12-20)
Enzymes use protein architecture to impose specific electrostatic fields onto their bound substrates, but the magnitude and catalytic effect of these electric fields have proven difficult to quantify with standard experimental approaches. Using vibrational Stark effect spectroscopy, we found that
Seungyoun Jung et al.
The Journal of nutrition, 145(1), 96-104 (2014-12-21)
One-carbon metabolism, which is crucial in DNA synthesis and genomic stability, is an interrelated network of biochemical reactions involved in several dietary and lifestyle factors. The development of the homocysteine score using these factors may be useful to reflect the
Bart Ostro et al.
Occupational and environmental medicine, 72(2), 123-129 (2014-11-12)
While several studies have reported associations of daily exposures to PM2.5 (particles less than 2.5 µm) with mortality, few studies have examined the impact of its constituents such as black carbon (BC), which is also a significant contributor to global climate
Aniruddha B Patil et al.
Journal of nanoscience and nanotechnology, 13(7), 5061-5068 (2013-08-02)
Present work reports a novel one step, greener protocol for the synthesis of starch-stabilized palladium nanoparticles (PdNPs) with an average particle diameter of 30-40 nm. These particles were stable and uniform in size. In present protocol, the concentrated solar energy
A Hagiwara et al.
Gan to kagaku ryoho. Cancer & chemotherapy, 15(4 Pt 2-1), 1038-1042 (1988-04-01)
A new drug delivery system comprising activated carbon particles adsorbing anticancer drugs was developed. Activated carbon particles have affinity to the regional lymph-nodes and the tumor surface. When activated carbon particles adsorbing anticancer drug were administered into the tissues or
A Dabrowski et al.
Chemosphere, 58(8), 1049-1070 (2005-01-25)
Adsorption of phenol and its derivatives on activated carbons is considered based on numerous papers related to this issue. Special attention is paid to the effects of carbon surface functionalities, pH of solution and heterogeneity effects that accompany adsorption of
G Muhlbachova et al.
The Science of the total environment, 502, 218-223 (2014-09-27)
The effects of lead, zinc, cadmium, arsenic and copper deposits on soil microbial parameters were investigated at a site exposed to contamination for over 200 years. Soil samples were collected in triplicates at 121 sites differing in contamination and soil
Guofeng Shen et al.
Journal of environmental sciences (China), 25(9), 1808-1816 (2014-02-14)
Controlled combustion experiments were conducted to investigate the influence of fuel charge size, moisture, air ventilation and feeding rate on the emission factors (EFs) of carbonaceous particulate matter, parent polycyclic aromatic hydrocarbons (pPAHs) and their derivatives from residential wood combustion
Katherine M Mullaugh et al.
Chemosphere, 107, 51-57 (2014-05-31)
Carbohydrates have been widely reported in atmospheric aerosols, but have not previously been quantified in rainwater. We have identified and quantified a series of 11 specific compounds including monosaccharides (glucose, fructose, arabinose, galactose and pinitol), disaccharides (sucrose and trehalose), sugar
Ecology: Good dirt with good friends.
Mark A Bradford
Nature, 505(7484), 486-487 (2014-01-10)
Gerald Schulman
Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation, 22(1), 107-113 (2011-12-28)
Fibrosis plays a major role in the pathogenesis of progressive chronic kidney disease (CKD). The inhibition of the renin-angiotensin system, which promotes fibrosis, has become the standard of care in the treatment of patients with CKD. The use of alternative
Indrajit Ghosh et al.
Science (New York, N.Y.), 346(6210), 725-728 (2014-11-08)
Biological photosynthesis uses the energy of several visible light photons for the challenging oxidation of water, whereas chemical photocatalysis typically involves only single-photon excitation. Perylene bisimide is reduced by visible light photoinduced electron transfer (PET) to its stable and colored
K Y Foo et al.
Journal of hazardous materials, 171(1-3), 54-60 (2009-07-07)
Water scarcity and pollution rank equal to climate change as the most urgent environmental issue for the 21st century. To date, the percolation landfill leachate into the groundwater tables and aquifer systems which poses a potential risk and potential hazards
Samuel Mondy et al.
Molecular ecology, 23(19), 4846-4861 (2014-08-26)
To investigate how exudation shapes root-associated bacterial populations, transgenic Arabidopsis thaliana plants that exuded the xenotopic compound octopine at low and high rates were grown in a nonsterile soil. Enumerations of both cultivable and octopine-degrading bacteria demonstrated that the ratios
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