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Showing 1-30 of 329 results for "93067" within Papers
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
Alice Cheng et al.
Biofabrication, 6(4), 045007-045007 (2014-10-08)
Additive manufacturing by laser sintering is able to produce high resolution metal constructs for orthopedic and dental implants. In this study, we used a human trabecular bone template to design and manufacture Ti-6Al-4V constructs with varying porosity via laser sintering.
Daniel J T Kyle et al.
Biomaterials, 52, 88-102 (2015-03-31)
Reproducing extracellular matrix topographical cues, such as those present within acellular dermal matrix (ADM), in synthetic implant surfaces, may augment cellular responses, independent of surface chemistry. This could lead to enhanced implant integration and performance while reducing complications. In this
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
Zuzana Urbanová et al.
FEMS microbiology ecology, 90(3), 633-646 (2014-09-10)
It is not well understood how the ecological status and microbial community composition of spruce swamp forests (SSF) relate to those found in bogs and fens. To clarify this, we investigated biogeochemical parameters and microbial community composition in a bog
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
Weimin Sun et al.
Applied microbiology and biotechnology, 99(23), 10271-10282 (2015-08-08)
The shift of microbial communities during a transition from mesophilic anaerobic digestion (MAD) to thermophilic anaerobic digestion (TAD) was characterized in two treatments. One treatment was inoculated with sludge and the other was inoculated with manure. In this study, methane
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
Emmanuelle Vulliet et al.
Environmental science and pollution research international, 21(19), 11370-11379 (2014-06-04)
To collect a large data set regarding the occurrence of organic substances in sediment, this study presents the examination of 20 micropollutants, as a national survey. The list of target compounds contains two alkylphenols, three polycyclic aromatic hydrocarbons (PAHs) not
Victor M Heilweil et al.
Environmental science & technology, 49(7), 4057-4065 (2015-03-19)
The environmental impacts of shale-gas development on water resources, including methane migration to shallow groundwater, have been difficult to assess. Monitoring around gas wells is generally limited to domestic water-supply wells, which often are not situated along predominant groundwater flow
Michael Phillips et al.
Health physics, 108(5), 538-546 (2015-03-27)
There is widespread interest in the development of tools to estimate radiation exposures. Exhaled breath provides a novel matrix for assessing biomarkers that could be correlated with exposures. The use of exhaled breath for estimating radiation exposure is warranted, as
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
Mayara L Serejo et al.
Environmental science & technology, 49(5), 3228-3236 (2015-02-13)
The influence of biogas flow rate (0, 0.3, 0.6, and 1.2 m(3) m(-2) h(-1)) on the elemental and macromolecular composition of the algal-bacterial biomass produced from biogas upgrading in a 180 L photobioreactor interconnected to a 2.5 L external bubbled
Jessica L Terrell et al.
Nature communications, 6, 8500-8500 (2015-10-13)
Advances in nanotechnology have provided unprecedented physical means to sample molecular space. Living cells provide additional capability in that they identify molecules within complex environments and actuate function. We have merged cells with nanotechnology for an integrated molecular processing network.
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
C Sbarbati et al.
Environmental science and pollution research international, 22(20), 15536-15548 (2015-05-27)
The present study deals with the application of different monitoring techniques and numerical models to characterize coastal aquifers affected by multiple sources of contamination. Specifically, equivalent freshwater heads in 243 monitoring wells were used to reconstruct the piezometric map of
Ján Žabka et al.
European journal of mass spectrometry (Chichester, England), 20(3), 233-247 (2014-06-04)
2,2-Dinitroethene-1,1-diamine (FOX-7) was studied by means of electrospray ionization (ESI) and chemical ionization (CI) mass spectrometry in both positive and negative ion mode. Detailed mechanisms of unimolecular fragmentations of protonated and deprotonated FOX-7 were investigated using high- and low- energy
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