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Yan Zhang et al.
Applied and environmental microbiology, 80(23), 7348-7355 (2014-09-23)
A novel nonheme chloroperoxidase (RhEst1), with promiscuous esterase activity for enantioselective hydrolysis of ethyl (S)-2,2-dimethylcyclopropanecarboxylate, was identified from a shotgun library of Rhodococcus sp. strain ECU1013. RhEst1 was overexpressed in Escherichia coli BL21(DE3), purified to homogeneity, and functionally characterized. Fingerprinting
Nadjmeh Doostdar et al.
Journal of biomedical materials research. Part A, 99(2), 173-183 (2011-10-07)
Calcific band keratopathy (CBK) is a degenerative condition resulting in the deposition of calcium salts in the superficial layers of the cornea and causing significant visual disturbance and pain of the affected eye. Unfortunately, the amount of CBK precipitates recovered
Stephen Michielsen et al.
Langmuir : the ACS journal of surfaces and colloids, 27(19), 11867-11872 (2011-08-26)
Small drops can move spontaneously on conical fibers. As a drop moves along the cone, it must change shape to maintain a constant volume, and thus, it must change its surface energy. Simultaneously, the exposed surface area of the underlying
Raquel Silva et al.
Advances in experimental medicine and biology, 733, 155-164 (2011-11-22)
In this work, we report a novel approach using proteinaceous microspheres of bovine serum albumin (BSA), human serum albumin (HSA) and silk fibroin (SF) containing different organic solvents, namely n-dodecane, mineral oil and vegetable oil, to reduce the activity of
Hwanmi Lim et al.
Environmental science & technology, 49(5), 3101-3109 (2015-01-28)
Benz[j]aceanthrylene (B[j]A) is a cyclopenta-fused polycyclic aromatic hydrocarbon with strong mutagenic and carcinogenic effects. We have identified B[j]A in air particulate matter (PM) in samples collected in Stockholm, Sweden and in Limeira, Brazil using LC-GC/MS analysis. Determined concentrations ranged between
Mohammad Tajik et al.
Journal of pharmaceutical and biomedical analysis, 107, 24-31 (2015-01-13)
In this research, a rapid efficient and automated instrument based on hollow fiber liquid-phase microextraction (HF-LPME) followed by high performance liquid chromatography (HPLC) with UV-vis detection was applied for the preconcentration and determination of two hormonal drugs (megestrol acetate and
Yadollah Yamini et al.
Journal of separation science, 37(17), 2364-2371 (2014-06-26)
A new type of liquid-phase microextraction based on two immiscible organic solvents was optimized and validated for the quantification of lidocaine, ketamine, and cocaine in human urine samples. A hollow-fiber based microextraction technique followed by gas chromatography coupled with mass
Anuschka Liekens et al.
Journal of chromatography. A, 1218(43), 7781-7787 (2011-09-23)
It has been demonstrated that it is possible to extend the Total Pore Blocking (TBP)-method for the determination of the external porosity (ε(e)) of packed bed columns from reversed-phase (RP) chromatography to normal-phase (NP) chromatography conditions by switching the nature
Zahra Hadian et al.
Iranian journal of pharmaceutical research : IJPR, 13(2), 393-404 (2014-09-23)
Omega-3 fatty acids (FAs) have been shown to prevent cardiovascular disease. The most commonly used omega-3 fatty acids like eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are highly vulnerable to oxidation and therefore, have short shelf life. Recent advances in
Kaila M Bennett et al.
Infection and immunity, 82(7), 2860-2871 (2014-04-30)
Microvilli are membrane extensions on the apical surface of polarized epithelia, such as intestinal enterocytes and tubule and duct epithelia. One notable exception in mucosal epithelia is M cells, which are specialized for capturing luminal microbial particles; M cells display
D Seveno et al.
Langmuir : the ACS journal of surfaces and colloids, 27(24), 14958-14967 (2011-11-02)
We propose a new theoretical model of dynamic wetting for systems comprising two immiscible liquids, in which one liquid displaces another from the surface of a solid. Such systems are important in many industrial processes and the natural world. The
Masoumeh Karvar et al.
Langmuir : the ACS journal of surfaces and colloids, 27(17), 10386-10391 (2011-07-07)
Surfactants such as Aerosol OT (AOT) are commonly used to stabilize and electrically charge nonpolar colloids in devices such as electronic ink displays. The electrical behavior of such devices is strongly influenced by the presence of charged inverse micelles, formed
Marcie G Towell et al.
Environmental pollution (Barking, Essex : 1987), 159(12), 3777-3783 (2011-08-30)
The effect of cable oil concentration, nutrient amendment and bioaugmentation on cable oil component biodegradation in a pristine agricultural soil was investigated. Biodegradation potential was evaluated over 21 d by measuring cumulative CO(2) respiration on a Micro-Oxymax respirometer and (14)C-phenyldodecane
Fengxia Liang et al.
ACS applied materials & interfaces, 4(8), 4177-4183 (2012-07-20)
Porous thin films of TiO(2) are prepared and their use as chemical sensors for organic vapor analytes is investigated. Thin-film optical interference (Fabry-Perot) fringes in the reflectance spectrum are monitored using Reflectometric Interference Fourier Transform Spectroscopy (RIFTS). Three analytes are
Marco Visentin et al.
Journal of separation science, 37(13), 1561-1569 (2014-04-12)
A gas chromatography with ion trap mass spectrometry method has been developed and validated for the analysis of 27 polar organic compounds in atmospheric aerosols. The target analytes were low-molecular-weight carboxylic acids and methoxyphenols, as relevant markers of source emissions
Hui-Jeong Jang et al.
Microbial cell factories, 10, 59-59 (2011-08-02)
Retinoids are lipophilic isoprenoids composed of a cyclic group and a linear chain with a hydrophilic end group. These compounds include retinol, retinal, retinoic acid, retinyl esters, and various derivatives of these structures. Retinoids are used as cosmetic agents and
Shaoxin Feng et al.
Langmuir : the ACS journal of surfaces and colloids, 28(49), 16927-16932 (2012-11-16)
The surface tension lowering abilities of insoluble steroids, progesterone and testosterone, were examined at the dodecane/water interface in the presence and absence of surfactants, sodium dodecyl sulfate, dodecyltrimethylammonium bromide, and dodecyl maltoside. In the absence of these surfactants, the steroids
Young-Kwon Park et al.
Journal of nanoscience and nanotechnology, 13(1), 714-717 (2013-05-08)
Platinum catalysts impregnated on different nanoporous materials, Meso-MFI, Si-SBA-15 and AI-SBA-15, were synthesized, and the hydroconversion of n-dodecane over these catalysts was performed. The catalytic characteristics were analyzed by Brunauer-Emmett-Teller surface area, X-ray diffraction, N2-adsorption-desorption and temperature programmed desorption of
Wenjun Zhang et al.
International journal of pharmaceutics, 441(1-2), 598-602 (2012-11-06)
Aspirin overdose could lead to intoxication, with the clinical manifestations of vomit, pulmonary edema and severe dyspnea. Stomach washing, emetics and activated charcoal are the common treatments with a limited efficiency for the intoxication. In this study, an active emulsion
Jun Zhou et al.
Journal of pharmaceutical and biomedical analysis, 94, 30-35 (2014-02-18)
A new and fast sample preparation technique based on two-phase hollow fiber liquid phase microextraction (HF-LPME) with magnetofluid was developed to quantitate and determine the four phenylethanoid glycosides (PhGs) (Echinacoside, Tubuloside B, Acteoside and Isoacteoside) in plasma after oral administration
Mohammad Saraji et al.
Journal of chromatography. A, 1218(48), 8600-8607 (2011-11-02)
A novel and sensitive method based on combination of two immiscible organic solvents hollow fiber-based liquid-liquid-liquid microextraction and corona discharge ion mobility spectrometry (HF-LLLME-CD-IMS) was employed for the analysis of clomipramine in human urine and plasma. The effect of formic
Mohamed Benchekroun et al.
ChemMedChem, 10(3), 523-539 (2014-12-30)
Herein we describe the design, multicomponent synthesis, and biological, molecular modeling and ADMET studies, as well as in vitro PAMPA-blood-brain barrier (BBB) analysis of new tacrine-ferulic acid hybrids (TFAHs). We identified (E)-3-(hydroxy-3-methoxyphenyl)-N-{8[(7-methoxy-1,2,3,4-tetrahydroacridin-9-yl)amino]octyl}-N-[2-(naphthalen-2-ylamino)2-oxoethyl]acrylamide (TFAH 10 n) as a particularly interesting multipotent compound
Congqiang Zhang et al.
Applied microbiology and biotechnology, 99(9), 3825-3837 (2015-02-27)
Artemisinin is a potent antimalarial drug; however, it suffers from unstable and insufficient supply from plant source. Here, we established a novel multivariate-modular approach based on experimental design for systematic pathway optimization that succeeded in improving the production of amorphadiene
Fabrizio Croccolo et al.
The Journal of chemical physics, 135(3), 034901-034901 (2011-07-27)
In the present work binary mixtures of varying concentrations of two miscible hydrocarbons, 1,2,3,4-tetrahydronaphtalene (THN) and n-dodecane (C12), are subjected to increasing pressure up to 50 MPa in order to investigate the dependence of the so-called concentration contrast factor (CF)
Christian Zorzetto et al.
Fitoterapia, 100, 95-109 (2014-12-03)
In the present work we carried out a phytochemical and biological investigation on three Hypericum species, i.e. Hypericum reflexum, Hypericum canariense and Hypericum grandifolium, from the Canary Islands where they are traditionally used as diuretic, wound healing, vermifuge, sedative and
Tong Wu et al.
Nature communications, 6, 5929-5929 (2015-01-13)
Particle-stabilized Pickering emulsions have shown unusual behaviours such as the formation of non-spherical droplets and the sudden halt of coalescence between individual droplets. Here we report another unusual behaviour of Pickering emulsions-the simultaneous coalescence of multiple droplets in a single
Chris Grant et al.
Enzyme and microbial technology, 48(6-7), 480-486 (2011-11-25)
The alkane-1-monoxygenase (alkB) complex of Pseudomonas putida GPo1 has been extensively studied in the past and shown to be capable of oxidising aliphatic C(5)-C(12) alkanes to primary alcohols both in the wild-type organism by growth on C(5)-C(12) alkanes as sole
Zhiqiang Sun et al.
PloS one, 9(11), e112615-e112615 (2014-11-12)
Many terpenoids have important pharmacological activity and commercial value; however, application of these terpenoids is often limited by problems associated with the production of sufficient amounts of these molecules. The use of Saccharomyces cerevisiae (S. cerevisiae) for the production of
Hiroshi Toda et al.
Applied and environmental microbiology, 81(6), 1919-1925 (2015-01-04)
We describe the development of biocatalysis for producing optically pure straight-chain (S)-epoxyalkanes using styrene monooxygenase of Rhodococcus sp. strain ST-10 (RhSMO). RhSMO was expressed in the organic solvent-tolerant microorganism Kocuria rhizophila DC2201, and the bioconversion reaction was performed in an
Wenjie Xia et al.
Journal of hazardous materials, 276, 489-498 (2014-06-16)
Alkanes and polycyclic aromatic hydrocarbons (PAHs) have threatened the environment due to toxicity and poor bioavailability. Interest in degradation of these hazardous materials by biosurfactant-producing bacteria has been steadily increasing in recent years. In this work, a novel biosurfactant-producing Pseudomonas
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