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显示 1-30 共 641 条结果 关于 "30-3280" 范围 论文
Thomas W Phillips et al.
Lab on a chip, 15(14), 2960-2967 (2015-06-10)
We report the use of a porous polytetrafluoroethylene capillary for the inline separation of liquid-liquid segmented flows, based on the selective wetting and permeation of the porous capillary walls by one of the liquids. Insertion of a narrow flow restriction
Christophe Lenglos et al.
Endocrinology, 156(2), 523-533 (2014-11-19)
This study compared the effects of relaxin-3 (RLN3) on food intake, plasma corticosterone, and the expression of corticotropin-releasing factor (CRF) in male and female rats. RLN3 was injected into the lateral ventricle at 25, 200, and 800 pmol concentrations. RLN3
Sara Picone et al.
Applied microbiology and biotechnology, 97(17), 7887-7898 (2012-10-24)
Contaminant biodegradation in unsaturated soils may reduce the risks of vapor intrusion. However, the reported rates show large variability and are often derived from slurry experiments that are not representative of unsaturated conditions. Here, different laboratory setups are used to
Jie Ma et al.
Environmental pollution (Barking, Essex : 1987), 178, 419-425 (2013-05-01)
The fate of fuel releases largely depends on the poorly-understood response in microbial community structure and function. Here, we evaluate the impacts to the microbial community resulting from a pilot-scale continuous release (10 months) of a 10% v:v ethanol solution
Veli C Ozalp et al.
Analytica chimica acta, 853, 533-540 (2014-12-04)
A quartz crystal microbalance sensor (QCM) was developed for sensitive and specific detection of Salmonella enterica serovar typhimurium cells in food samples by integrating a magnetic bead purification system. Although many sensor formats based on bioaffinity agents have been developed
Jae Won Jeong et al.
Nature communications, 5, 5387-5387 (2014-11-11)
Nanotransfer printing technology offers outstanding simplicity and throughput in the fabrication of transistors, metamaterials, epidermal sensors and other emerging devices. Nevertheless, the development of a large-area sub-50 nm nanotransfer printing process has been hindered by fundamental reliability issues in the replication
Fathima N M Khalid et al.
Environmental science and pollution research international, 22(17), 12975-12981 (2015-04-29)
The concentration changes of 18 different polycyclic aromatic hydrocarbons (PAHs) in two different biochars were assessed after (1) chemical oxidative treatment with a solution of H2O2 and Na2S2O8, (2) exposure to sunlight with intermittent wetting, and (3) exposure to sunlight with intermittent
Inmaculada Suárez et al.
Journal of chromatography. A, 1407, 193-202 (2015-07-15)
Average molecular weights and polydispersity indexes are some of the most important parameters considered in the polymer characterization. Usually, gel permeation chromatography (GPC) and multi angle light scattering (MALS) are used for this determination, but GPC values are overestimated due
S Hamid et al.
Environmental technology, 35(9-12), 1470-1477 (2014-04-08)
The biodegradation potential of Burkholderia vietnamiensis G4 (B. vietnamiensis G4) was evaluated under encapsulation in comparison with direct exposure to trichloroethylene (TCE) (0.1, 0.5, 1 and 5 mg/L) and toluene (10 and 50 mg/L), maintaining aerobic conditions. B. vietnamiensis G4
[Renal injure and metabolic acidosis associated with toluene].
Xi-xian Xu et al.
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 31(1), 75-77 (2013-02-26)
Sonal Dalvi et al.
Applied and environmental microbiology, 80(21), 6664-6676 (2014-08-26)
Arhodomonas sp. strain Seminole was isolated from a crude oil-impacted brine soil and shown to degrade benzene, toluene, phenol, 4-hydroxybenzoic acid (4-HBA), protocatechuic acid (PCA), and phenylacetic acid (PAA) as the sole sources of carbon at high salinity. Seminole is
Tanmay Bera et al.
ACS applied materials & interfaces, 7(26), 14528-14535 (2015-06-16)
We report that liquid crystal elastomers (LCEs), often portrayed as artificial muscles, serve as scaffolds for skeletal muscle cell. A simultaneous microemulsion photopolymerization and cross-linking results in nematic LCE microspheres 10-30 μm in diameter that when conjoined form a LCE
Mahmoud Seifi et al.
International journal of pharmaceutics, 471(1-2), 37-44 (2014-05-06)
In the present work a series of tramadole imprinted micro- and nanoparticles were prepared and study their recognition properties. Methacrylic acid (MAA), as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a cross-linker and different solvents (chloroform, toluene and acetonitrile
Tiina J Kauppila et al.
Journal of the American Society for Mass Spectrometry, 26(6), 1036-1045 (2015-04-02)
Seventy-seven EPA priority environmental pollutants were analyzed using gas chromatography-mass spectrometry (GC-MS) equipped with an optimized atmospheric pressure photoionization (APPI) and an atmospheric pressure laser ionization (APLI) interface with and without dopants. The analyzed compounds included e.g., polycyclic aromatic hydrocarbons
P John Thomas et al.
Journal of nanoscience and nanotechnology, 7(6), 1689-1694 (2007-07-28)
The synthesis of thin films and nanocrystalline matter at the interface of two liquids is emerging as an important area in synthesis of inorganic materials. The advances in this area are reviewed to highlight potential uses of this method. The
Ethan B Secor et al.
Advanced materials (Deerfield Beach, Fla.), 27(42), 6683-6688 (2015-10-01)
Intense pulsed light (IPL) annealing of graphene inks is demonstrated for rapid post-processing of inkjet-printed patterns on various substrates. A conductivity of ≈25,000 S m(-1) is achieved following a single printing pass using a concentrated ink containing 20 mg mL(-1)
Zareen S Khan et al.
Journal of chromatography. A, 1418, 228-232 (2015-10-04)
Public exposure to pesticide residues through the main/side-stream smoke of tobacco (Nicotiana tabacum L.) is an international concern. This article reports optimization and validation of large-scale multiresidue analysis methods involving low pressure and traditional gas chromatography tandem mass spectrometry in
Harilaos Damianakos et al.
Journal of AOAC International, 97(5), 1244-1249 (2015-04-24)
Four Greek endemic Boraginaceae plants, Onosma erecta Sibth. & Sm., Onosma kaheirei Teppner, Onosma leptantha Heldr., and Cynoglossum columnae L. (aerial parts), were screened for their content of pyrrolizidine alkaloids (PAs). TLC with the Mattocks-Molyneux visualization reagent was used as
Brian D Fitz et al.
Journal of chromatography. A, 1392, 82-90 (2015-03-31)
Low thermal mass gas chromatography (LTM-GC) was evaluated for rapid, high peak capacity separations with three injection methods: liquid, headspace solid phase micro-extraction (HS-SPME), and direct vapor. An Agilent LTM equipped with a short microbore capillary column was operated at
S Balaji et al.
Physical chemistry chemical physics : PCCP, 17(46), 30983-30987 (2015-11-06)
The electrochemical oxidation of toluene in N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([bmpyr](+)[Ntf2](-)) was investigated by using cyclic voltammetry and galvanostatic electrolysis in the presence of Co(II) at a Pt disc working electrode. Cyclic voltammetry (CV) investigations revealed that Co(II)-Co(III) oxidation is a diffusion
Oriane Tascone et al.
Journal of agricultural and food chemistry, 63(20), 4922-4932 (2015-05-06)
This study investigates the concentrations of 54 multiclass pesticides during the transformation processes from rose petal to concrete and absolute using roses spiked with pesticides as a model. The concentrations of the pesticides were followed during the process of transforming
Pierina Visciano et al.
Journal of food protection, 78(9), 1719-1728 (2015-09-01)
Concentrations of pollutants with regulatory limits were determined in specimens of Chamelea gallina, a species of clam collected along the Abruzzi coastal region of the central Adriatic Sea. Nine sampling sites were selected to evaluate the distribution of contaminants in
Liang Guo et al.
Journal of chromatography. A, 1286, 9-15 (2013-03-19)
For the first time, a novel one-step sample preparation method that combines microwave assisted extraction and solvent bar microextraction (MAE-SBME) with analysis by gas chromatography-mass spectrometry (GC-MS), was developed for the fast and efficient determination of polycyclic aromatic hydrocarbons (PAHs)
Hongyun Li et al.
Neurobiology of aging, 36(5), 1820-1833 (2015-03-19)
Apolipoprotein D (apoD) is expressed in the brain and levels are increased in affected brain regions in Alzheimer's disease (AD). The role that apoD may play in regulating AD pathology has not been addressed. Here, we crossed both apoD-null mice
Chris A Harvey et al.
Journal of chromatography. A, 1401, 1-8 (2015-05-27)
We have developed a solid phase microextraction (SPME) sampling method using fused silica lined bottles (400 ml) to collect, store, and stabilize a headspace subsample from the source for subsequent offline, repetitive analyses of the gas using fiber-based SPME. The
K M Kuczkowski et al.
Acta anaesthesiologica Belgica, 55(1), 53-55 (2004-04-23)
To date, no reports have specifically addressed the obstetric and anesthetic management of complications stemming from an acute maternal poly-inhalant intake; we herein present such a case and review the current limited literature available on this subject.
Seshadri Reddy Ankireddy et al.
International journal of nanomedicine, 10 Spec Iss, 113-119 (2015-09-09)
Dopamine is a neurotransmitter of the catecholamine family and has many important roles, especially in human brain. Several diseases of the nervous system, such as Parkinson's disease, attention deficit hyperactivity disorder, restless legs syndrome, are believed to be related to
José M Estrada et al.
Water research, 47(13), 4312-4321 (2013-06-15)
Clogging due to biomass accumulation and the loss of structural stability of the packing media are common operational drawbacks of standard gas biofiltration inherent to the traditional biofilter design, which result in prohibitive pressure drop buildups and media channeling. In
Rihui Su et al.
Journal of chromatography. A, 1405, 23-31 (2015-06-17)
In this work, polymerized high internal phase emulsion (polyHIPE) monoliths were prepared and applied as monolithic adsorbent materials for proconcentration of trace polycyclic aromatic hydrocarbons (PAHs) from large-volume water samples. The monolithic polyHIPE columns were prepared by in situ polymerization
Poulami Basu Thakur et al.
PloS one, 8(3), e58846-e58846 (2013-03-22)
Pseudomonas syringae pv. syringae B728a, a bacterial pathogen of bean, utilizes large surface populations and extracellular signaling to initiate a fundamental change from an epiphytic to a pathogenic lifestyle. Extracytoplasmic function (ECF) sigma (σ) factors serve as important regulatory factors
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