Abstract
We demonstrate that RNA-primed rolling circle amplification (RPRCA) using phi29 DNA polymerase, a precircularized probe, and SYBR Green II achieved real-time detection of specific messenger RNA (mRNA) from living microbes. The precircularized DNA probe was prepared by intramolecular ligation using C...
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PMID: 20230771
PDF is available here.
Abstract
High molecular weight (M(w)) species were observed at substantial intensities in the positive-ion mass spectra in urban Shanghai aerosols collected from a single-particle time-of-flight mass spectrometer (in the m/z range 250-500) during three separate periods over 2007-2009. These species correlate...
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PMID: 20476743
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Abstract
The photochemical fate of Marbofloxacin (MAR) and Enrofloxacin (ENR), two Fluoroquinolones (FQs) largely used as veterinary bactericides known to be present in surface waters, was investigated in aqueous solution. The degradation of these pollutants (5-50 microg L(-1) starting concentration) was com...
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PMID: 20481547
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Abstract
We show that binary and ternary colloids and dissolved complexes of As(V), Fe and organic matter (OM) form at environmentally relevant conditions and analyzed these colloids/complexes using ATR-FTIR- and Mossbauer-spectroscopy. Dissolved Fe-OM complexes and ferrihydrite-OM colloids were formed by re...
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PMID: 20433135
PDF is available here.
Abstract
Assessing the environmental transport and fate of manufactured nanoparticles (NPs) and potential exposure risks requires models for predicting attachment of NPs coated with organic macromolecules in porous media. The objective of this study was to determine the properties of coated nanoparticles tha...
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PMID: 20465214
PDF is available here.
Abstract
Microbial reduction of Fe(III) oxides results in the production of Fe(II) and may lead to the subsequent formation of Fe(II)-bearing secondary mineralization products including magnetite, siderite, vivianite, chukanovite (ferrous hydroxy carbonate (FHC)), and green rust; however, the factors control...
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PMID: 20476735
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Abstract
Lincosamides are among the most frequently detected antibacterial agents in effluents from wastewater treatment plants and surface runoff at agricultural production systems. Little is known about their transformations in the environment. This study revealed that manganese oxide caused rapid and exte...
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PMID: 20476766
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Abstract
A Radial Stagnation Point Flow (RSPF) system coupled with a microscope was used to study deposition of Cryptosporidium parvum oocysts on quartz and Suwannee River Natural Organic Matter (SRNOM)-coated surfaces in solutions with different Ca(2+) or Mg(2+) concentrations. Both untreated and proteinase...
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PMID: 20465262
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Abstract
Biomonitoring surveys of wild cetaceans commonly utilize blubber as a means to assess exposure to persistent organic pollutants (POPs), but the relationship between concentrations in blubber and those in blood, a better indicator of target organ exposure, is poorly understood. To define this relatio...
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PMID: 20491435
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Abstract
Real-time polymerase chain reaction (PCR), denaturing gradient gel electrophoresis (DGGE), and the culture-based method were applied in the intrinsic bioremediation study at a petroleum-hydrocarbon contaminated site. The genes of phenol hydroxylase (PHE), ring-hydroxylating toluene monooxygenase (RM...
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PMID: 20185233
PDF is available here.
Abstract
The occurrence of carbonyl compounds and benzene, toluene, ethylbenzene and xylenes (BTEXs) was assessed in the indoor and outdoor air of a hospital in Guangzhou, China. The pharmacy room, the preparing traditional Chinese medicine room, the supply room (where the medical appliances are disinfected)...
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PMID: 20181426
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Abstract
Two membrane bioreactors (MBRs) with different operation conditions were employed to investigate the role of dissolved organic matter (DOM) in membrane fouling. DOM characteristics and their correlations with membrane fouling in the MBR systems were studied by using three-dimensional excitation-emis...
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PMID: 20144501
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Abstract
Six biofilters were used for advanced treatment of Yangtze River source water to investigate the effects of hydraulic loading rate (HLR) on pollutant removal and microbial community. HLR was found to exert significant influences on the removal efficiency of the conventional pollutants and 24 detecta...
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PMID: 20189298
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Abstract
A combined solvent extraction and biphasic biodegradation process was proposed to remove organic pollutants from highly saline solutions, where the organic solvent is biocompatible and the organic-aqueous interface remains quasi-quiescent during the process. Phenol and Pseudomonas putida BCRC 14365...
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PMID: 20171780
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Abstract
We have developed a new flux sampler, referred to herein as an emission cell for simultaneous multi-sampling (ECSMS), that is used for screening indoor emission sources of VOCs and for determining the emission rates of these sources. Because the ECSMS is based on passive sampling, it can be easily u...
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PMID: 20149530
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Abstract
The performance of three biofilters (BF1-BF3) packed with a new hybrid (inert/organic) packing material that consists of spherical argyle pellets covered with compost was examined in different operational scenarios and compared with a biofilter packed with pine bark (BF4). BF1, BF2 and BF4 were inoc...
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PMID: 20188468
PDF is available here.
Abstract
A new dispersive liquid-liquid microextraction method based on solidification of floating organic drop (DLLME-SFO) combined with inductively coupled plasma-optical emission spectrometry (ICP-OES) was developed for the determination of aluminium. An appropriate mixture of acetone and 1-undecanol was...
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PMID: 20189303
PDF is available here.
Abstract
We evaluated the chronological changes in fecal bacteria and organic acids in 6 patients undergoing autologous stem cell transplantation with quinolone-based chemoprophylaxis. All patients developed grade 2-3 diarrhea. Four patients developed grade 3 febrile neutropenia. The total count of obligator...
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PMID: 20567111
PDF is available here.
Abstract
This study provides information on the effects of inorganic and organic constituents on inactivation and sub-lethal injury of Escherichia coli in water stored in a copper vessel. E. coli suspensions were stored for up to 24 h in copper vessels containing one of the following dissolved constituents a...
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PMID: 20358286
PDF is available here.
Abstract
These results show that reduction of acetic acid concentration by an extraction process with raw palm oil methyl ester before re-using stillage improves the number of recycles without a major effect on ethanol production. The proposed process generates a palm oil methyl ester that contains organic a...
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PMID: 19748936
PDF is available here.
Abstract
Olive-mill wastes represent a significant environmental problem in Mediterranean areas due to their significant production during a short period of time. Their high polyphenol, lipid and organic acid concentrations make them phytotoxic wastes. Composting is one of the technologies used for the valor...
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PMID: 19854812
PDF is available here.
Abstract
We have developed a facile strategy to fabricate a large-scale, orderly-patterned honeycomb structure by using supramolecular self-assembly of a low mass organic molecule.
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PMID: 20458395
PDF is available here.
Abstract
These results indicate that Ph and 4-IPP undergo degradation predominantly at the bubble/solution interface, whereas RhB undergoes degradation at both bubble/solution interface and in the bulk solution.
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PMID: 20388590
PDF is available here.